Updating source url in copyright.

Signed-off-by: Daniel Baumann <daniel@debian.org>

.clang-format

@@ -1,3 +1,6 @@
 BasedOnStyle: Google
 Language: Cpp
-ColumnLimit: 100
+ColumnLimit: 120
+IndentWidth: 2
+TabWidth: 2
+UseTab: Never

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+github: tsl0922
+patreon: tsl0922

.github/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+- package-ecosystem: npm
+  directory: "/html"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 10

.github/workflows/backend.yml

@@ -13,40 +13,17 @@ on:
     - "CMakeLists.txt"
     - "src/*"
     - "scripts/*"
+  workflow_call:
 
 jobs:
-  build:
-    runs-on: ubuntu-18.04
-    strategy:
-      matrix:
-        lws-version: [4.1.6, 3.2.3, 2.4.2]
-    steps:
-      - name: Install packages
-        run: |
-          sudo apt-get update
-          sudo apt-get install build-essential cmake libjson-c-dev zlib1g-dev libssl-dev libuv1-dev
-      - name: Install libwebsockets-${{ matrix.lws-version }}
-        env:
-          LWS_VERSION: ${{ matrix.lws-version }}
-        run: |
-          cd $(mktemp -d)
-          curl -sLo- https://github.com/warmcat/libwebsockets/archive/v${LWS_VERSION}.tar.gz | tar xz
-          cd libwebsockets-${LWS_VERSION}
-          cmake -DLWS_WITH_LIBUV=ON -DLWS_UNIX_SOCK=ON -DLWS_IPV6=ON -DLWS_WITHOUT_TESTAPPS=ON -DCMAKE_BUILD_TYPE=RELEASE .
-          make && sudo make install && sudo ldconfig
-      - uses: actions/checkout@v2
-      - name: Build ttyd
-        run: |
-          cmake -DCMAKE_BUILD_TYPE=RELEASE .
-          make && sudo make install
-          ttyd -v
   cross:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     strategy:
+      fail-fast: false
       matrix:
-        target: [i686, x86_64, arm, armhf, aarch64, mips, mipsel, mips64, mips64el]
+        target: [i686, x86_64, arm, armhf, aarch64, mips, mipsel, mips64, mips64el, s390x, win32]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install packages
         run: |
           sudo apt-get update
@@ -55,7 +32,8 @@ jobs:
         env:
           BUILD_TARGET: ${{ matrix.target }}
         run: ./scripts/cross-build.sh
-      - uses: actions/upload-artifact@v1
+      - uses: actions/upload-artifact@v4
         with:
           name: ttyd.${{ matrix.target }}
-          path: build/ttyd
+          path: build/ttyd*
+

.github/workflows/docker.yml

@@ -0,0 +1,59 @@
+name: docker
+
+on:
+  push:
+    branches: main
+    tags: ["*"]
+
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install packages
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y autoconf automake build-essential cmake curl file libtool
+      - name: Cross build multi-arch binary
+        run: |
+          mkdir dist
+          for arch in amd64 armv7 arm64 s390x; do
+            env BUILD_TARGET=$arch ./scripts/cross-build.sh
+            [ "$arch" = "armv7" ] && arch="arm" 
+            mkdir -p dist/$arch && cp build/ttyd dist/$arch/ttyd
+          done
+      - uses: docker/setup-qemu-action@v3
+      - uses: docker/setup-buildx-action@v3
+      - uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_HUB_USER }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      - name: Determine docker tags
+        id: docker_tag
+        run: |
+          case $GITHUB_REF in
+            refs/tags/*)
+              TAG_NAME=${GITHUB_REF#refs/tags/}
+              echo "DOCKER_TAG=tsl0922/ttyd:${TAG_NAME}" >> $GITHUB_ENV
+              echo "ALPINE_TAG=tsl0922/ttyd:${TAG_NAME}-alpine" >> $GITHUB_ENV
+              ;;
+            *)
+              echo "DOCKER_TAG=tsl0922/ttyd:latest" >> $GITHUB_ENV
+              echo "ALPINE_TAG=tsl0922/ttyd:alpine" >> $GITHUB_ENV
+          esac
+      - name: build/push docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64,linux/arm/v7,linux/arm64,linux/s390x
+          push: true
+          tags: ${{ env.DOCKER_TAG }}
+      - name: build/push docker image (alpine)
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile.alpine
+          platforms: linux/amd64,linux/arm/v7,linux/arm64,linux/s390x
+          push: true
+          tags: ${{ env.ALPINE_TAG }}

.github/workflows/frontend.yml

@@ -12,15 +12,17 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
-          node-version: '12.x'
+          node-version: 18
       - name: Run yarn install, check and build
         run: |
-          cd html
+          corepack enable
+          corepack prepare yarn@stable --activate
           yarn install
           yarn run check
           yarn run build
+        working-directory: html

.github/workflows/release.yml

@@ -2,49 +2,36 @@ name: release
 
 on:
   push:
-    tags:
-    - "*"
+    tags: ["*"]
 
 jobs:
-  release:
-    runs-on: ubuntu-18.04
-    outputs:
-      upload_url: ${{ steps.create_release.outputs.upload_url }} 
-    steps:
-      - name: Create Release
-        id: create_release
-        uses: actions/create-release@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          tag_name: ${{ github.ref }}
-          release_name: ${{ github.ref }}
-          draft: true
-          prerelease: false
-
   build:
-    runs-on: ubuntu-18.04
-    needs: release
-    strategy:
-      matrix:
-        target: [i686, x86_64, arm, armhf, aarch64, mips, mipsel, mips64, mips64el]
+    uses: ./.github/workflows/backend.yml
+  publish:
+    needs: [build]
+    runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v2
-      - name: Install packages
+      - uses: actions/checkout@v4
+      - name: Check version bump
         run: |
-          sudo apt-get update
-          sudo apt-get install -y autoconf automake build-essential cmake curl file libtool
-      - name: Cross build (${{ matrix.target }})
-        env:
-          BUILD_TARGET: ${{ matrix.target }}
-        run: ./scripts/cross-build.sh
-      - name: Upload assets
-        id: upload-release-asset
-        uses: actions/upload-release-asset@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG=$(git describe --tags --match "[0-9]*.[0-9]*.[0-9]*" --abbrev=8)
+          VERSION=$(grep project CMakeLists.txt| awk '{print $3}')
+          if [ "$TAG" != "$VERSION" ]; then
+            echo "=== Version in CMakeLists.txt and git tag does not match!"
+            echo "=== Git Tag: $TAG, Version: $VERSION"
+            exit 1
+          fi
+      - uses: actions/download-artifact@v4
+      - run: |
+          mkdir build
+          for file in ttyd.*/*; do
+            target=$(echo $file | awk -F/ '{print $1}')
+            [[ $file == *.exe ]] && target="$target.exe"
+            mv $file build/$target
+          done
+          pushd build; sha256sum ttyd.* > SHA256SUMS; popd
+      - uses: ncipollo/release-action@v1
         with:
-          upload_url: ${{ needs.release.outputs.upload_url }}
-          asset_path: build/ttyd
-          asset_name: ttyd.${{ matrix.target }}
-          asset_content_type: application/octet-stream
+          artifacts: build/*
+          allowUpdates: true
+          draft: true

.gitignore

@@ -47,5 +47,8 @@ build
 # Clion files
 .idea/
 
+# VSCode files
+.vscode/
+
 # Project files
 !init.d

CMakeLists.txt

@@ -1,20 +1,19 @@
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.12.0)
 
-project(ttyd C)
-set(PROJECT_VERSION "1.6.3")
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
-find_package(Git)
-if(GIT_FOUND)
-    execute_process(
-            COMMAND ${GIT_EXECUTABLE} --git-dir ${CMAKE_CURRENT_SOURCE_DIR}/.git rev-parse --short HEAD
-            RESULT_VARIABLE GIT_RET
-            OUTPUT_VARIABLE GIT_COMMIT
-            OUTPUT_STRIP_TRAILING_WHITESPACE
-            ERROR_QUIET
-    )
-    if("${GIT_RET}" STREQUAL "0")
-        set(PROJECT_VERSION "${PROJECT_VERSION}-${GIT_COMMIT}")
-    endif()
+project(ttyd VERSION 1.7.7 LANGUAGES C)
+
+set(TTYD_VERSION "${PROJECT_VERSION}")
+
+include(GetGitVersion)
+get_git_version(GIT_VERSION SEM_VER)
+get_git_head(GIT_COMMIT)
+if("${SEM_VER}" VERSION_GREATER "${TTYD_VERSION}")
+    set(TTYD_VERSION "${SEM_VER}")
+endif()
+if(NOT "${GIT_COMMIT}" STREQUAL "")
+    set(TTYD_VERSION "${TTYD_VERSION}-${GIT_COMMIT}")
 endif()
 
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_GNU_SOURCE")
@@ -28,7 +27,7 @@ else()
     set(CMAKE_C_STANDARD 99)
 endif()
 
-set(SOURCE_FILES src/server.c src/http.c src/protocol.c src/terminal.c src/utils.c)
+set(SOURCE_FILES src/utils.c src/pty.c src/protocol.c src/http.c src/server.c)
 
 include(FindPackageHandleStandardArgs)
 
@@ -43,7 +42,7 @@ endif()
 
 find_path(JSON-C_INCLUDE_DIR NAMES json.h PATH_SUFFIXES json-c)
 find_library(JSON-C_LIBRARY NAMES json-c)
-find_package_handle_standard_args(JSON-C REQUIRED_VARS JSON-C_INCLUDE_DIR JSON-C_LIBRARY)
+find_package_handle_standard_args(JSON-C REQUIRED_VARS JSON-C_LIBRARY JSON-C_INCLUDE_DIR)
 mark_as_advanced(JSON-C_INCLUDE_DIR JSON-C_LIBRARY)
 if(JSON-C_FOUND)
     SET(JSON-C_INCLUDE_DIRS "${JSON-C_INCLUDE_DIR}")
@@ -51,26 +50,19 @@ if(JSON-C_FOUND)
 endif()
 
 find_package(ZLIB REQUIRED)
-find_package(Libwebsockets 1.7.0 QUIET)
-
-if(NOT Libwebsockets_FOUND) # for libwebsockets-dev on ubuntu 16.04
-    find_path(LIBWEBSOCKETS_INCLUDE_DIR NAMES libwebsockets.h)
-    find_library(LIBWEBSOCKETS_LIBRARY NAMES websockets)
-    find_package_handle_standard_args(Libwebsockets REQUIRED_VARS LIBWEBSOCKETS_LIBRARY LIBWEBSOCKETS_INCLUDE_DIR)
-    mark_as_advanced(LIBWEBSOCKETS_INCLUDE_DIR LIBWEBSOCKETS_LIBRARY)
-    if(Libwebsockets_FOUND)
-        SET(LIBWEBSOCKETS_INCLUDE_DIRS "${LIBWEBSOCKETS_INCLUDE_DIR}")
-        SET(LIBWEBSOCKETS_LIBRARIES "${LIBWEBSOCKETS_LIBRARY}")
-    endif()
-endif()
+find_package(Libwebsockets 3.2.0 REQUIRED)
 
 set(INCLUDE_DIRS ${ZLIB_INCLUDE_DIR} ${LIBWEBSOCKETS_INCLUDE_DIRS} ${JSON-C_INCLUDE_DIRS} ${LIBUV_INCLUDE_DIRS})
 set(LINK_LIBS ${ZLIB_LIBRARIES} ${LIBWEBSOCKETS_LIBRARIES} ${JSON-C_LIBRARIES} ${LIBUV_LIBRARIES})
 
 set (CMAKE_REQUIRED_INCLUDES ${INCLUDE_DIRS})
 include(CheckSymbolExists)
+check_symbol_exists(LWS_WITH_LIBUV "lws_config.h" LWS_WITH_LIBUV)
 check_symbol_exists(LWS_OPENSSL_SUPPORT "lws_config.h" LWS_OPENSSL_ENABLED)
 check_symbol_exists(LWS_WITH_MBEDTLS "lws_config.h" LWS_MBEDTLS_ENABLED)
+if(NOT LWS_WITH_LIBUV)
+    message(FATAL_ERROR "libwebsockets was not build with libuv support (-DLWS_WITH_LIBUV=ON)")
+endif()
 if(LWS_OPENSSL_ENABLED AND NOT LWS_MBEDTLS_ENABLED)
     find_package(OpenSSL REQUIRED)
     list(APPEND INCLUDE_DIRS ${OPENSSL_INCLUDE_DIR})
@@ -78,15 +70,23 @@ if(LWS_OPENSSL_ENABLED AND NOT LWS_MBEDTLS_ENABLED)
 endif()
 
 if(WIN32)
-    list(APPEND LINK_LIBS shell32)
-elseif(NOT APPLE)
+    list(APPEND LINK_LIBS shell32 ws2_32)
+    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/app.rc.in ${CMAKE_CURRENT_BINARY_DIR}/app.rc @ONLY)
+    list(APPEND SOURCE_FILES ${CMAKE_CURRENT_BINARY_DIR}/app.rc)
+else()
+    find_library(LIBUTIL NAMES util)
+    if(LIBUTIL)
         list(APPEND LINK_LIBS util)
+    endif()
 endif()
 
 add_executable(${PROJECT_NAME} ${SOURCE_FILES})
 target_include_directories(${PROJECT_NAME} PUBLIC ${INCLUDE_DIRS})
 target_link_libraries(${PROJECT_NAME} ${LINK_LIBS})
-target_compile_definitions(${PROJECT_NAME} PRIVATE TTYD_VERSION="${PROJECT_VERSION}")
+target_compile_definitions(${PROJECT_NAME} PUBLIC
+    TTYD_VERSION="${TTYD_VERSION}"
+    $<$<PLATFORM_ID:Windows>:_WIN32_WINNT=0xa00 WINVER=0xa00>
+)
 
 include(GNUInstallDirs)
 

Dockerfile

@@ -1,16 +1,15 @@
-FROM ubuntu:18.04
-RUN apt-get update && apt-get install -y autoconf automake curl cmake git libtool make \
-    && git clone --depth=1 https://github.com/tsl0922/ttyd.git /ttyd \
-    && cd /ttyd && env BUILD_TARGET=x86_64 WITH_SSL=true ./scripts/cross-build.sh
+FROM ubuntu:20.04
 
-FROM ubuntu:18.04
-COPY --from=0 /ttyd/build/ttyd /usr/bin/ttyd
+ARG TARGETARCH
 
-ADD https://github.com/krallin/tini/releases/download/v0.18.0/tini /sbin/tini
-RUN chmod +x /sbin/tini
+# Dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends tini && rm -rf /var/lib/apt/lists/*
+
+# Application
+COPY ./dist/${TARGETARCH}/ttyd /usr/bin/ttyd
 
 EXPOSE 7681
 WORKDIR /root
 
-ENTRYPOINT ["/sbin/tini", "--"]
-CMD ["ttyd", "bash"]
+ENTRYPOINT ["/usr/bin/tini", "--"]
+CMD ["ttyd", "-W", "bash"]

Dockerfile-alpine

@@ -1,14 +0,0 @@
-FROM ubuntu:18.04
-RUN apt-get update && apt-get install -y autoconf automake curl cmake git libtool make \
-    && git clone --depth=1 https://github.com/tsl0922/ttyd.git /ttyd \
-    && cd /ttyd && env BUILD_TARGET=x86_64 WITH_SSL=true ./scripts/cross-build.sh
-
-FROM alpine:3.12
-COPY --from=0 /ttyd/build/ttyd /usr/bin/ttyd
-RUN apk add --no-cache bash tini
-
-EXPOSE 7681
-WORKDIR /root
-
-ENTRYPOINT ["/sbin/tini", "--"]
-CMD ["ttyd", "bash"]

Dockerfile.alpine

@@ -0,0 +1,15 @@
+FROM alpine
+
+ARG TARGETARCH
+
+# Dependencies
+RUN apk add --no-cache bash tini
+
+# Application
+COPY ./dist/${TARGETARCH}/ttyd /usr/bin/ttyd
+
+EXPOSE 7681
+WORKDIR /root
+
+ENTRYPOINT ["/sbin/tini", "--"]
+CMD ["ttyd", "-W", "bash"]

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2016 Shuanglei Tao <tsl0922@gmail.com>
+Copyright (c) 2016-2022 Shuanglei Tao <tsl0922@gmail.com>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,15 +1,23 @@
-# ttyd - Share your terminal over the web ![backend](https://github.com/tsl0922/ttyd/workflows/backend/badge.svg) ![frontend](https://github.com/tsl0922/ttyd/workflows/frontend/badge.svg)
+![backend](https://github.com/tsl0922/ttyd/workflows/backend/badge.svg)
+![frontend](https://github.com/tsl0922/ttyd/workflows/frontend/badge.svg)
+[![GitHub Releases](https://img.shields.io/github/downloads/tsl0922/ttyd/total)](https://github.com/tsl0922/ttyd/releases)
+[![Docker Pulls](https://img.shields.io/docker/pulls/tsl0922/ttyd)](https://hub.docker.com/r/tsl0922/ttyd)
+[![Packaging status](https://repology.org/badge/tiny-repos/ttyd.svg)](https://repology.org/project/ttyd/versions)
+![GitHub](https://img.shields.io/github/license/tsl0922/ttyd)
+
+# ttyd - Share your terminal over the web
 
 ttyd is a simple command-line tool for sharing terminal over the web.
 
-![screenshot](https://github.com/tsl0922/ttyd/raw/master/screenshot.gif)
+![screenshot](https://github.com/tsl0922/ttyd/raw/main/screenshot.gif)
 
 # Features
 
-- Built on top of [Libwebsockets](https://libwebsockets.org) with [libuv](https://libuv.org) for speed
-- Fully-featured terminal based on [Xterm.js](https://xtermjs.org) with [CJK](https://en.wikipedia.org/wiki/CJK_characters) and IME support
-- Graphical [ZMODEM](https://en.wikipedia.org/wiki/ZMODEM) integration with [lrzsz](https://ohse.de/uwe/software/lrzsz.html) support
-- SSL support based on [OpenSSL](https://www.openssl.org)
+- Built on top of [libuv](https://libuv.org) and [WebGL2](https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API) for speed
+- Fully-featured terminal with [CJK](https://en.wikipedia.org/wiki/CJK_characters) and IME support
+- [ZMODEM](https://en.wikipedia.org/wiki/ZMODEM) ([lrzsz](https://ohse.de/uwe/software/lrzsz.html)) / [trzsz](https://trzsz.github.io) file transfer support
+- [Sixel](https://en.wikipedia.org/wiki/Sixel) image output support ([img2sixel](https://saitoha.github.io/libsixel) / [lsix](https://github.com/hackerb9/lsix))
+- SSL support based on [OpenSSL](https://www.openssl.org) / [Mbed TLS](https://github.com/Mbed-TLS/mbedtls)
 - Run any custom command with options
 - Basic authentication support and many other custom options
 - Cross platform: macOS, Linux, FreeBSD/OpenBSD, [OpenWrt](https://openwrt.org), Windows
@@ -20,70 +28,64 @@ ttyd is a simple command-line tool for sharing terminal over the web.
 
 ## Install on macOS
 
-Install with [homebrew](http://brew.sh):
-
-```bash
-brew install ttyd
-```
+- Install with [Homebrew](http://brew.sh): `brew install ttyd`
+- Install with [MacPorts](https://www.macports.org): `sudo port install ttyd`
 
 ## Install on Linux
 
-- Binary version (recommended): download from the [releases](https://github.com/tsl0922/ttyd/releases) page.
+- Binary version (recommended): download from the [releases](https://github.com/tsl0922/ttyd/releases) page
+- Install with [Homebrew](https://docs.brew.sh/Homebrew-on-Linux) : `brew install ttyd`
+- Install the snap: `sudo snap install ttyd --classic`
 - Build from source (debian/ubuntu):
-
     ```bash
-    sudo apt-get install build-essential cmake git libjson-c-dev libwebsockets-dev
+    sudo apt-get update
+    sudo apt-get install -y build-essential cmake git libjson-c-dev libwebsockets-dev
     git clone https://github.com/tsl0922/ttyd.git
     cd ttyd && mkdir build && cd build
     cmake ..
     make && sudo make install
     ```
-
     You may also need to compile/install [libwebsockets](https://libwebsockets.org) from source if the `libwebsockets-dev` package is outdated.
-
+- Install on OpenWrt: `opkg install ttyd`
 - Install on Gentoo: clone the [repo](https://bitbucket.org/mgpagano/ttyd/src/master) and follow the directions [here](https://wiki.gentoo.org/wiki/Custom_repository#Creating_a_local_repository).
 
 ## Install on Windows
 
-[Compile on Windows](https://github.com/tsl0922/ttyd/wiki/Compile-on-Windows).
-
-## Install on OpenWrt
-
-```bash
-opkg install ttyd
-```
+- Binary version (recommended): download from the [releases](https://github.com/tsl0922/ttyd/releases) page
+- Install with [WinGet](https://github.com/microsoft/winget-cli): `winget install tsl0922.ttyd`
+- Install with [Scoop](https://scoop.sh/#/apps?q=ttyd&s=2&d=1&o=true): `scoop install ttyd`
+- [Compile on Windows](https://github.com/tsl0922/ttyd/wiki/Compile-on-Windows)
 
 # Usage
 
 ## Command-line Options
 
 ```
-ttyd is a tool for sharing terminal over the web
-
 USAGE:
     ttyd [options] <command> [<arguments...>]
 
-VERSION:
-    1.6.3
-
 OPTIONS:
     -p, --port              Port to listen (default: 7681, use `0` for random port)
     -i, --interface         Network interface to bind (eg: eth0), or UNIX domain socket path (eg: /var/run/ttyd.sock)
-    -c, --credential        Credential for Basic Authentication (format: username:password)
+    -U, --socket-owner      User owner of the UNIX domain socket file, when enabled (eg: user:group)
+    -c, --credential        Credential for basic authentication (format: username:password)
+    -H, --auth-header       HTTP Header name for auth proxy, this will configure ttyd to let a HTTP reverse proxy handle authentication
     -u, --uid               User id to run with
     -g, --gid               Group id to run with
     -s, --signal            Signal to send to the command when exit it (default: 1, SIGHUP)
+    -w, --cwd               Working directory to be set for the child program
     -a, --url-arg           Allow client to send command line arguments in URL (eg: http://localhost:7681?arg=foo&arg=bar)
-    -R, --readonly          Do not allow clients to write to the TTY
+    -W, --writable          Allow clients to write to the TTY (readonly by default)
     -t, --client-option     Send option to client (format: key=value), repeat to add more options
     -T, --terminal-type     Terminal type to report, default: xterm-256color
     -O, --check-origin      Do not allow websocket connection from different origin
     -m, --max-clients       Maximum clients to support (default: 0, no limit)
     -o, --once              Accept only one client and exit on disconnection
+    -q, --exit-no-conn      Exit on all clients disconnection
     -B, --browser           Open terminal with the default system browser
     -I, --index             Custom index.html path
-    -b, --base-path         Expected base path for requests coming from a reverse proxy (eg: /mounted/here)
-    -P, --ping-interval     Websocket ping interval(sec) (default: 300)
+    -b, --base-path         Expected base path for requests coming from a reverse proxy (eg: /mounted/here, max length: 128)
+    -P, --ping-interval     Websocket ping interval(sec) (default: 5)
     -6, --ipv6              Enable IPv6 support
     -S, --ssl               Enable SSL
     -C, --ssl-cert          SSL certificate file path
@@ -92,8 +94,6 @@ OPTIONS:
     -d, --debug             Set log level (default: 7)
     -v, --version           Print the version and exit
     -h, --help              Print this text and exit
-
-Visit https://github.com/tsl0922/ttyd to get more information and report bugs.
 ```
 
 Read the example usage on the [wiki](https://github.com/tsl0922/ttyd/wiki/Example-Usage).

app.rc.in

@@ -0,0 +1,32 @@
+#include <winver.h>
+
+#define VERSION @PROJECT_VERSION_MAJOR@,@PROJECT_VERSION_MINOR@,@PROJECT_VERSION_PATCH@,0
+#define VERSION_STR "@PROJECT_VERSION_MAJOR@.@PROJECT_VERSION_MINOR@.@PROJECT_VERSION_PATCH@.0\0"
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION VERSION
+ PRODUCTVERSION VERSION
+ FILEFLAGSMASK  VS_FFI_FILEFLAGSMASK
+ FILEFLAGS      0
+ FILEOS         VOS__WINDOWS32
+ FILETYPE       VFT_DLL
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904b0"
+        BEGIN
+            VALUE "FileDescription", "ttyd\0"
+            VALUE "ProductName", "ttyd\0"
+            VALUE "ProductVersion", VERSION_STR
+            VALUE "FileVersion", VERSION_STR
+            VALUE "InternalName", "ttyd\0"
+            VALUE "OriginalFilename", "ttyd.exe\0"
+            VALUE "LegalCopyright", "Copyright (C) 2016-2022 Shuanglei Tao\0"
+        VALUE "Comment", "\0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1200
+    END
+END

cmake/GetGitVersion.cmake

@@ -0,0 +1,47 @@
+find_package(Git)
+
+function(get_git_version var1 var2)
+  if(GIT_EXECUTABLE)
+    execute_process(
+      COMMAND ${GIT_EXECUTABLE} describe --tags --match "[0-9]*.[0-9]*.[0-9]*" --abbrev=8
+      WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+      RESULT_VARIABLE status
+      OUTPUT_VARIABLE GIT_VERSION
+    )
+    if (${status})
+      set(GIT_VERSION "0.0.0")
+    else()
+      string(STRIP ${GIT_VERSION} GIT_VERSION)
+      string(REGEX REPLACE "-[0-9]+-g" "-" GIT_VERSION ${GIT_VERSION})
+    endif()
+  else()
+    set(GIT_VERSION "0.0.0")
+  endif()
+
+  string(REGEX MATCH "^[0-9]+.[0-9]+.[0-9]+" SEM_VER "${GIT_VERSION}")
+
+  message("-- Git Tag: ${GIT_VERSION}, Sem Ver: ${SEM_VER}")
+
+  set(${var1} ${GIT_VERSION} PARENT_SCOPE)
+  set(${var2} ${SEM_VER} PARENT_SCOPE)
+endfunction()
+
+function(get_git_head var1)
+  if(GIT_EXECUTABLE)
+    execute_process(
+      COMMAND ${GIT_EXECUTABLE} --git-dir ${CMAKE_CURRENT_SOURCE_DIR}/.git rev-parse --short HEAD
+      RESULT_VARIABLE status
+      OUTPUT_VARIABLE GIT_COMMIT
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+      ERROR_QUIET
+    )
+
+    if(${status})
+      set(GIT_COMMIT "unknown")
+    endif()
+
+    message("-- Git Commit: ${GIT_COMMIT}")
+
+    set(${var1} ${GIT_COMMIT} PARENT_SCOPE)
+  endif()
+endfunction()

debian/TODO

@@ -0,0 +1,8 @@
+ttyd
+====
+
+  * write logs to own logfile
+  * add debconf and update-alternative handling to do
+    apache configuration (enable modules, create config, create htpasswd, etc.)
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Mon, 08 Feb 2021 14:20:24 +0100

debian/changelog

@@ -1,3 +1,126 @@
+ttyd (1.7.7-2) sid; urgency=medium
+
+  * Uploading to sid.
+  * Moving writable startup-option to the front as apparently order
+    matters.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Mon, 08 Apr 2024 10:20:40 +0200
+
+ttyd (1.7.7-1) sid; urgency=medium
+
+  * Uploading to sid.
+  * Merging upstream version 1.7.7.
+  * Updating copyright for 2024.
+  * Updating to standards-version 4.7.0.
+  * Starting ttyd by default in read-write mode (ttyd 1.7.4 changed to
+    read-only default which makes sense as a general default, in Debian
+    ttyd is by default started on localhost only and requireing login).
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Mon, 08 Apr 2024 10:17:09 +0200
+
+ttyd (1.7.3-2) sid; urgency=medium
+
+  * Uploading to sid.
+  * Adding manual depends to libwebsockets-evlib-uv (Closes: #1022217).
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Wed, 01 Feb 2023 20:52:44 +0100
+
+ttyd (1.7.3-1) sid; urgency=medium
+
+  * Uploading to sid.
+  * Merging upstream version 1.7.3.
+  * Updating to standards version 4.6.2.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Mon, 23 Jan 2023 09:45:13 +0100
+
+ttyd (1.7.2-1) sid; urgency=medium
+
+  * Uploading to sid.
+  * Merging upstream version 1.7.2.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Fri, 21 Oct 2022 11:25:05 +0200
+
+ttyd (1.7.1-1) sid; urgency=medium
+
+  * Uploading to sid.
+  * Merging upstream version 1.7.1.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Fri, 02 Sep 2022 10:36:10 +0200
+
+ttyd (1.7.0-1) sid; urgency=medium
+
+  * Uploading to sid.
+  * Merging upstream version 1.7.0.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Mon, 15 Aug 2022 14:08:23 +0200
+
+ttyd (1.6.3+20220719-4) sid; urgency=medium
+
+  * Uploading to sid.
+  * Correcting port typo in apache2 config.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Thu, 21 Jul 2022 16:37:32 +0200
+
+ttyd (1.6.3+20220719-3) sid; urgency=medium
+
+  * Uploading to sid.
+  * Correcting typo of ProxyPassReverse directive name in apache2 config.
+  * Using 127.0.0.1 instead of localhost in apache2 config to work on
+    ipv6-only systems too.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Thu, 21 Jul 2022 07:14:33 +0200
+
+ttyd (1.6.3+20220719-2) sid; urgency=medium
+
+  * Uploading to sid.
+  * Removing superfluous slashes in apache2 config for convenience
+    reasons.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Wed, 20 Jul 2022 08:08:53 +0200
+
+ttyd (1.6.3+20220719-1) sid; urgency=medium
+
+  * Uploading to sid.
+  * Merging upstream version 1.6.3+20220719.
+  * Updating copyright for new upstream.
+  * Updating to standards version 4.6.1.
+  * Adding apache2 reverse-proxy configuration.
+  * Adding TODO file.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Tue, 19 Jul 2022 12:34:47 +0200
+
+ttyd (1.6.3+20210924-1) sid; urgency=medium
+
+  * Uploading to sid.
+  * Merging upstream version 1.6.3+20210924.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Sat, 09 Oct 2021 12:24:08 +0200
+
+ttyd (1.6.3-4) sid; urgency=medium
+
+  * Uploading to sid.
+  * Updating to standards version 4.6.0.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Sat, 09 Oct 2021 11:02:22 +0200
+
+ttyd (1.6.3-3) sid; urgency=medium
+
+  * Uploading to sid.
+  * Adding /etc/default/ttyd to handle options used to start ttyd via systemd
+    unit.
+  * Restricting package to linux architectures.
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Fri, 26 Feb 2021 09:38:56 +0100
+
+ttyd (1.6.3-2) sid; urgency=medium
+
+  * Uploading to sid.
+  * Adding README.Debian.
+  * Correcting path to executables in system service,
+    thanks to Jonas Smedegaard <dr@jones.dk> (Closes: #983261).
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Mon, 22 Feb 2021 06:50:22 +0100
+
 ttyd (1.6.3-1) sid; urgency=medium
 
   * Initial upload to sid (Closes: #972863).

debian/control

@@ -9,16 +9,19 @@ Build-Depends:
  libwebsockets-dev,
  zlib1g-dev,
 Rules-Requires-Root: no
-Standards-Version: 4.5.1
+Standards-Version: 4.7.0
 Homepage: https://tsl0922.github.io/ttyd
 Vcs-Browser: https://git.progress-linux.org/users/daniel.baumann/debian/packages/ttyd
 Vcs-Git: https://git.progress-linux.org/users/daniel.baumann/debian/packages/ttyd
 
 Package: ttyd
 Section: web
-Architecture: any
+Architecture: linux-any
 Depends:
+ libwebsockets-evlib-uv,
  ${misc:Depends},
  ${shlibs:Depends},
+Suggests:
+ apache2,
 Description: Share your terminal over the web
  ttyd is a command-line tool for sharing a terminal over the web.

debian/copyright

@@ -1,18 +1,14 @@
 Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 Upstream-Name: ttyd
 Upstream-Contact: Shuanglei Tao <tsl0922@gmail.com>
-Source: https://github.com/tsl0922/ttyd/releases
+Source: https://github.com/tsl0922/ttyd/tags
 
 Files: *
-Copyright: 2016-2021 Shuanglei Tao <tsl0922@gmail.com>
+Copyright: 2016-2024 Shuanglei Tao <tsl0922@gmail.com>
 License: MIT
 
-Files: src/queue.h
-Copyright: 1991-1993 The Regents of the University of California
-License: BSD-3
-
 Files: debian/*
-Copyright: 2021 Daniel Baumann <daniel.baumann@progress-linux.org>
+Copyright: 2021-2024 Daniel Baumann <daniel.baumann@progress-linux.org>
 License: MIT
 
 License: BSD-3

debian/examples/apache2-authbasic-file.conf

@@ -0,0 +1,10 @@
+# /etc/ttyd/apache2-auth.conf
+
+<IfFile /etc/ttyd/htpasswd>
+	AuthName "ttyd"
+	AuthBasicProvider file
+	AuthType basic
+
+	AuthUserFile /etc/ttyd/htpasswd
+	Require valid-user
+</IfFile>

debian/examples/apache2-authbasic-ip.conf

@@ -0,0 +1,8 @@
+# /etc/ttyd/apache2-auth.conf
+
+Order deny,allow
+Deny from all
+
+Allow from 10.0.0.0/8
+Allow from 172.16.0.0/12
+Allow from 192.168.0.0/16

debian/examples/apache2-authbasic-ldap-group.conf

@@ -0,0 +1,16 @@
+# /etc/ttyd/apache2-auth.conf
+
+AuthName "ttyd"
+AuthBasicProvider ldap
+AuthType basic
+
+AuthLDAPURL "ldaps://ldap.example.net:636/dc=example,dc=net?uid?sub"
+AuthLDAPBindDN cn=read-only,ou=srv-account,dc=example,dc=net
+AuthLDAPBindPassword "examplePassword"
+
+AuthLDAPRemoteUserAttribute uid
+AuthLDAPRemoteUserIsDN off
+AuthLDAPGroupAttribute memberUid
+AuthLDAPGroupAttributeIsDN off
+
+Require ldap-group cn=foo,ou=security,ou=groups,dc=example,dc=net

debian/examples/apache2-authbasic-ldap-user.conf

@@ -0,0 +1,16 @@
+# /etc/ttyd/apache2-auth.conf
+
+AuthName "ttyd"
+AuthBasicProvider ldap
+AuthType basic
+
+AuthLDAPURL "ldaps://ldap.example.net:636/dc=example,dc=net?uid?sub"
+AuthLDAPBindDN cn=read-only,ou=srv-account,dc=example,dc=net
+AuthLDAPBindPassword "examplePassword"
+
+AuthLDAPRemoteUserAttribute uid
+AuthLDAPRemoteUserIsDN off
+AuthLDAPGroupAttribute memberUid
+AuthLDAPGroupAttributeIsDN off
+
+Require ldap-user foo bar baz

debian/local/apache2/ttyd.conf

@@ -0,0 +1,18 @@
+# /etc/apache2/conf-available/ttyd.conf
+
+<IfModule mod_proxy.c>
+	ProxyRequests Off
+	ProxyPreserveHost On
+
+	ProxyPass /ttyd/ws ws://127.0.0.1:7681/ws
+	ProxyPassReverse /ttyd/ws ws://127.0.0.1:7681/ws
+
+	ProxyPass /ttyd http://127.0.0.1:7681 keepalive=on
+	ProxyPassReverse /ttyd http://127.0.0.1:7681
+
+	<IfFile /etc/ttyd/apache2-auth.conf>
+		<Location /ttyd>
+			Include /etc/ttyd/apache2-auth.conf
+		</Location>
+	</IfFile>
+</IfModule>

debian/local/default/ttyd

@@ -0,0 +1,3 @@
+# /etc/default/ttyd
+
+TTYD_OPTIONS="-W -i lo -p 7681 -O login"

debian/ttyd.README.Debian

@@ -0,0 +1,62 @@
+ttyd for Debian
+===============
+
+1. Default configuration
+------------------------
+
+After installing ttyd it will by default listen on http://localhost:7681
+in multi-user read-write "login"-mode:
+
+  * multi-user means that more than one user can connect at the same time.
+
+  * read-write means that anyone connecting to the website can input data.
+
+  * Login mode means that the user gets a login prompt (like getty) where
+    user and password has to be entered.
+
+Edit /etc/default/ttyd and check the ttyd(1) manpage for more information
+about available options.
+
+
+2. Reverse proxy
+----------------
+
+To make ttyd accessible on the network, it is advised to hide it behind a
+reverse proxy that does TLS and performs user authentication.
+
+To enable the apache2 proxy configuration, the following modules and
+configuration need to be enabled:
+
+  * sudo a2enmod proxy proxy_http proxy_http2 proxy_wstunnel
+
+  * sudo a2enconf ttyd
+
+  * sudo service apache2 reload
+
+ttyd is then accessible as <http://example.org/ttyd>.
+
+
+3. Apache authentication
+------------------------
+
+The apache reverse-proxy configuration automatically includes
+/etc/ttyd/apache2-auth.conf, if existing, to protect access to '/ttyd'.
+
+There are some examples in /usr/share/doc/ttyd/examples that can be
+used as starting point.
+
+To enable HTTP basic authentication, the following steps can be used:
+
+  * sudo mkdir -p /etc/ttyd
+
+  * sudo ln -s /usr/share/doc/ttyd/examples/apache2-authbasic-file.conf \
+      /etc/ttyd/apache2-auth.conf
+
+  * sudo htpasswd -c -b /etc/ttyd/htpasswd daniel password123
+
+  * sudo service apache2 reload
+
+This will allow the user 'daniel' to access ttyd with the password
+'password123'. Further users can be added, see htpasswd(1).
+
+ -- Daniel Baumann <daniel.baumann@progress-linux.org>  Sun, 21 Feb 2021 17:19:20 +0100

debian/ttyd.examples

@@ -0,0 +1 @@
+debian/examples/*

debian/ttyd.install

@@ -0,0 +1,2 @@
+debian/local/apache2/*	/etc/apache2/conf-available
+debian/local/default/*	/etc/default

debian/ttyd.service

@@ -5,8 +5,9 @@ After=network.target systemd-tmpfiles-clean.service
 
 [Service]
 Type=simple
-ExecStart=/bin/ttyd -i lo -p 7681 -O login
-ExecReload=/bin/kill -HUP $MAINPID
+EnvironmentFile=/etc/default/ttyd
+ExecStart=/usr/bin/ttyd $TTYD_OPTIONS
+ExecReload=/usr/bin/kill -HUP $MAINPID
 KillMode=process
 LimitNOFILE=512
 LimitMEMLOCK=infinity

debian/watch

@@ -1,3 +1,3 @@
 version=4
 opts=filenamemangle=s/.+\/v?(\d\S+)\.tar\.gz/ttyd-$1\.tar\.gz/ \
-https://github.com/tsl0922/ttyd/releases .*/v?(\d\S+)\.tar\.gz
+https://github.com/tsl0922/ttyd/tags .*/v?(\d\S+)\.tar\.gz

html/.eslintignore

@@ -0,0 +1 @@
+dist/

html/.eslintrc.json

@@ -0,0 +1,20 @@
+{
+  "extends": "./node_modules/gts/",
+  "overrides": [
+    {
+      "files": ["**/*.ts", "**/*.tsx"],
+      "parserOptions": {
+        "jsxPragma": "h"
+      },
+      "rules": {
+        "@typescript-eslint/no-duplicate-enum-values": "off"
+      }
+    },
+    {
+      "files": ["gulpfile.js", "webpack.config.js"],
+      "rules": {
+        "node/no-unpublished-require": "off"
+      }
+    }
+  ]
+}

html/.gitignore

@@ -1,4 +1,9 @@
 node_modules
-/build
-/dist
-/*.log
+dist
+*.log
+
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*

html/.prettierrc.js

@@ -0,0 +1,6 @@
+module.exports = {
+  ...require('gts/.prettierrc.json'),
+  "bracketSpacing": true,
+  "tabWidth": 4,
+  "printWidth": 120,
+}

html/.yarn/patches/zmodem.js-npm-0.1.10-e5537fa2ed.patch

@@ -0,0 +1,34 @@
+diff --git a/src/zsession.js b/src/zsession.js
+index 5f0b8f9d8afa6fba0acd6dd0477afa186f7aad9a..c7ea98e0f08c97d63d321f784a5dd8bf66888743 100644
+--- a/src/zsession.js
++++ b/src/zsession.js
+@@ -548,20 +548,17 @@ Zmodem.Session.Receive = class ZmodemReceiveSession extends Zmodem.Session {
+         if (this._got_ZFIN) {
+             if (this._input_buffer.length < 2) return;
+ 
+-            //if it’s OO, then set this._bytes_after_OO
+-            if (Zmodem.ZMLIB.find_subarray(this._input_buffer, OVER_AND_OUT) === 0) {
++            if (Zmodem.ZMLIB.find_subarray(this._input_buffer, OVER_AND_OUT) !== 0) {
++                console.warn( "PROTOCOL: Only thing after ZFIN should be “OO” (79,79), not: " + this._input_buffer.join() );
++            }
+ 
+-                //This doubles as an indication that the session has ended.
+-                //We need to set this right away so that handlers like
+-                //"session_end" will have access to it.
+-                this._bytes_after_OO = _trim_OO(this._bytes_being_consumed.slice(0));
+-                this._on_session_end();
++            //This doubles as an indication that the session has ended.
++            //We need to set this right away so that handlers like
++            //"session_end" will have access to it.
++            this._bytes_after_OO = _trim_OO(this._bytes_being_consumed.slice(0));
++            this._on_session_end();
+ 
+-                return;
+-            }
+-            else {
+-                throw( "PROTOCOL: Only thing after ZFIN should be “OO” (79,79), not: " + this._input_buffer.join() );
+-            }
++            return;
+         }
+ 
+         var parsed;

html/.yarnrc.yml

@@ -0,0 +1 @@
+nodeLinker: node-modules

html/README.md

@@ -1,6 +1,8 @@
 ## Prerequisites
 
-install [Yarn](https://yarnpkg.com), and run: `yarn install`.
+> **NOTE:** yarn v2 is required.
+
+Install [Yarn](https://yarnpkg.com/getting-started/install), and run: `yarn install`.
 
 ## Development
 

html/gulpfile.js

@@ -1,31 +1,31 @@
-const { src, dest, task, series } = require("gulp");
+const { src, dest, task, series } = require('gulp');
 const clean = require('gulp-clean');
 const gzip = require('gulp-gzip');
 const inlineSource = require('gulp-inline-source');
-const rename = require("gulp-rename");
+const rename = require('gulp-rename');
 const through2 = require('through2');
 
 const genHeader = (size, buf, len) => {
     let idx = 0;
-    let data = "unsigned char index_html[] = {\n  ";
+    let data = 'unsigned char index_html[] = {\n  ';
 
     for (const value of buf) {
         idx++;
 
-        let current = value < 0 ? value + 256 : value;
+        const current = value < 0 ? value + 256 : value;
 
-        data += "0x";
+        data += '0x';
         data += (current >>> 4).toString(16);
-        data += (current & 0xF).toString(16);
+        data += (current & 0xf).toString(16);
 
         if (idx === len) {
-            data += "\n";
+            data += '\n';
         } else {
-            data += idx % 12 === 0 ? ",\n  " : ", ";
+            data += idx % 12 === 0 ? ',\n  ' : ', ';
         }
     }
 
-    data += "};\n";
+    data += '};\n';
     data += `unsigned int index_html_len = ${len};\n`;
     data += `unsigned int index_html_size = ${size};\n`;
     return data;
@@ -33,30 +33,36 @@ const genHeader = (size, buf, len) => {
 let fileSize = 0;
 
 task('clean', () => {
-    return src('dist', { read: false, allowEmpty: true })
-        .pipe(clean());
+    return src('dist', { read: false, allowEmpty: true }).pipe(clean());
 });
 
 task('inline', () => {
-    return src('dist/index.html')
-        .pipe(inlineSource())
-        .pipe(rename("inline.html"))
-        .pipe(dest('dist/'));
+    const options = {
+        compress: false,
+    };
+
+    return src('dist/index.html').pipe(inlineSource(options)).pipe(rename('inline.html')).pipe(dest('dist/'));
 });
 
-task('default', series('inline', () => {
+task(
+    'default',
+    series('inline', () => {
         return src('dist/inline.html')
-        .pipe(through2.obj((file, enc, cb) => {
+            .pipe(
+                through2.obj((file, enc, cb) => {
                     fileSize = file.contents.length;
                     return cb(null, file);
-        }))
+                })
+            )
             .pipe(gzip())
-        .pipe(through2.obj((file, enc, cb) => {
+            .pipe(
+                through2.obj((file, enc, cb) => {
                     const buf = file.contents;
                     file.contents = Buffer.from(genHeader(fileSize, buf, buf.length));
                     return cb(null, file);
-        }))
-        .pipe(rename("html.h"))
+                })
+            )
+            .pipe(rename('html.h'))
             .pipe(dest('../src/'));
-}));
-
+    })
+);

html/package.json

@@ -11,66 +11,63 @@
   "license": "MIT",
   "scripts": {
     "prestart": "gulp clean",
-    "start": "webpack serve",
+    "start": "NODE_ENV=development && webpack serve",
     "build": "NODE_ENV=production webpack && gulp",
     "inline": "NODE_ENV=production webpack && gulp inline",
     "check": "gts check",
     "fix": "gts fix"
   },
-  "husky": {
-    "hooks": {
-      "pre-commit": "lint-staged"
-    }
-  },
-  "lint-staged": {
-    "src/**/*.ts": [
-      "gts fix",
-      "git add"
-    ],
-    "src/**/*.scss": [
-      "scssfmt",
-      "git add"
-    ]
+  "engines": {
+    "node": ">=12"
   },
   "devDependencies": {
-    "copy-webpack-plugin": "^6.4.1",
-    "css-loader": "^5.0.1",
-    "gts": "^1.1.2",
+    "@typescript-eslint/eslint-plugin": "^7.1.1",
+    "copy-webpack-plugin": "^12.0.2",
+    "css-loader": "^6.10.0",
+    "css-minimizer-webpack-plugin": "^6.0.0",
+    "eslint": "^8.57.0",
+    "eslint-plugin-node": "^11.1.0",
+    "eslint-plugin-prettier": "^5.1.3",
+    "eslint-webpack-plugin": "^4.0.1",
+    "gts": "^5.2.0",
     "gulp": "^4.0.2",
     "gulp-clean": "^0.4.0",
     "gulp-gzip": "^1.4.2",
     "gulp-inline-source": "^4.0.0",
     "gulp-rename": "^2.0.0",
-    "html-webpack-plugin": "^4.5.0",
-    "husky": "^4.3.6",
-    "lint-staged": "^10.5.3",
-    "mini-css-extract-plugin": "^1.3.3",
-    "node-sass": "^5.0.0",
-    "optimize-css-assets-webpack-plugin": "^5.0.4",
-    "sass-loader": "^10.1.0",
+    "html-webpack-plugin": "^5.6.0",
+    "mini-css-extract-plugin": "^2.8.1",
+    "sass": "^1.71.1",
+    "sass-loader": "^14.1.1",
     "scssfmt": "^1.0.7",
-    "style-loader": "^2.0.0",
-    "terser-webpack-plugin": "^4.2.3",
+    "style-loader": "^3.3.4",
+    "terser-webpack-plugin": "^5.3.10",
     "through2": "^4.0.2",
-    "ts-loader": "^8.0.13",
-    "tslint": "^6.1.3",
-    "tslint-loader": "^3.5.4",
-    "typescript": "^3.9.7",
-    "webpack": "4.44.2",
-    "webpack-cli": "^4.3.1",
-    "webpack-dev-server": "^3.11.1",
-    "webpack-merge": "^5.7.3"
+    "ts-loader": "^9.5.1",
+    "typescript": "^5.3.3",
+    "util": "^0.12.5",
+    "webpack": "^5.90.3",
+    "webpack-cli": "^5.1.4",
+    "webpack-dev-server": "^5.0.2",
+    "webpack-merge": "^5.10.0"
   },
   "dependencies": {
-    "backoff": "^2.5.0",
+    "@xterm/addon-canvas": "^0.6.0",
+    "@xterm/addon-fit": "^0.9.0",
+    "@xterm/addon-image": "^0.7.0",
+    "@xterm/addon-unicode11": "^0.7.0",
+    "@xterm/addon-web-links": "^0.10.0",
+    "@xterm/addon-webgl": "^0.17.0",
+    "@xterm/xterm": "^5.4.0",
     "decko": "^1.2.0",
     "file-saver": "^2.0.5",
-    "preact": "^10.5.8",
-    "whatwg-fetch": "^3.5.0",
-    "xterm": "^4.9.0",
-    "xterm-addon-fit": "^0.4.0",
-    "xterm-addon-web-links": "^0.4.0",
-    "xterm-addon-webgl": "^0.9.0",
+    "preact": "^10.19.6",
+    "trzsz": "^1.1.5",
+    "whatwg-fetch": "^3.6.20",
     "zmodem.js": "^0.1.10"
-  }
+  },
+  "resolutions": {
+    "zmodem.js@^0.1.10": "patch:zmodem.js@npm%3A0.1.10#./.yarn/patches/zmodem.js-npm-0.1.10-e5537fa2ed.patch"
+  },
+  "packageManager": "yarn@3.6.3"
 }

html/prettier.config.js

@@ -1,6 +0,0 @@
-module.exports = {
-    trailingComma: "es5",
-    tabWidth: 4,
-    printWidth: 120,
-    singleQuote: true,
-};

html/src/components/app.tsx

@@ -1,26 +1,27 @@
 import { h, Component } from 'preact';
 
-import { ITerminalOptions, ITheme } from 'xterm';
-import { ClientOptions, Xterm } from './terminal';
+import { Terminal } from './terminal';
 
-if ((module as any).hot) {
-    // tslint:disable-next-line:no-var-requires
-    require('preact/debug');
-}
+import type { ITerminalOptions, ITheme } from '@xterm/xterm';
+import type { ClientOptions, FlowControl } from './terminal/xterm';
 
 const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
-const path = window.location.pathname.replace(/[\/]+$/, '');
+const path = window.location.pathname.replace(/[/]+$/, '');
 const wsUrl = [protocol, '//', window.location.host, path, '/ws', window.location.search].join('');
 const tokenUrl = [window.location.protocol, '//', window.location.host, path, '/token'].join('');
 const clientOptions = {
     rendererType: 'webgl',
     disableLeaveAlert: false,
     disableResizeOverlay: false,
-    titleFixed: null,
+    enableZmodem: false,
+    enableTrzsz: false,
+    enableSixel: false,
+    isWindows: false,
+    unicodeVersion: '11',
 } as ClientOptions;
 const termOptions = {
     fontSize: 13,
-    fontFamily: 'Menlo For Powerline,Consolas,Liberation Mono,Menlo,Courier,monospace',
+    fontFamily: 'Consolas,Liberation Mono,Menlo,Courier,monospace',
     theme: {
         foreground: '#d2d2d2',
         background: '#2b2b2b',
@@ -42,17 +43,24 @@ const termOptions = {
         brightCyan: '#37e6e8',
         brightWhite: '#f1f1f0',
     } as ITheme,
+    allowProposedApi: true,
 } as ITerminalOptions;
+const flowControl = {
+    limit: 100000,
+    highWater: 10,
+    lowWater: 4,
+} as FlowControl;
 
 export class App extends Component {
     render() {
         return (
-            <Xterm
+            <Terminal
                 id="terminal-container"
                 wsUrl={wsUrl}
                 tokenUrl={tokenUrl}
                 clientOptions={clientOptions}
                 termOptions={termOptions}
+                flowControl={flowControl}
             />
         );
     }

html/src/components/terminal/index.tsx

@@ -1,372 +1,59 @@
 import { bind } from 'decko';
-import * as backoff from 'backoff';
 import { Component, h } from 'preact';
-import { ITerminalOptions, Terminal } from 'xterm';
-import { FitAddon } from 'xterm-addon-fit';
-import { WebglAddon } from 'xterm-addon-webgl';
-import { WebLinksAddon } from 'xterm-addon-web-links';
+import { Xterm, XtermOptions } from './xterm';
 
-import { OverlayAddon } from './overlay';
-import { ZmodemAddon, FlowControl } from '../zmodem';
+import '@xterm/xterm/css/xterm.css';
+import { Modal } from '../modal';
 
-import 'xterm/css/xterm.css';
-
-interface TtydTerminal extends Terminal {
-    fit(): void;
-}
-
-declare global {
-    interface Window {
-        term: TtydTerminal;
-    }
-}
-
-const enum Command {
-    // server side
-    OUTPUT = '0',
-    SET_WINDOW_TITLE = '1',
-    SET_PREFERENCES = '2',
-
-    // client side
-    INPUT = '0',
-    RESIZE_TERMINAL = '1',
-    PAUSE = '2',
-    RESUME = '3',
-}
-
-export interface ClientOptions {
-    rendererType: 'dom' | 'canvas' | 'webgl';
-    disableLeaveAlert: boolean;
-    disableResizeOverlay: boolean;
-    titleFixed: string;
-}
-
-interface Props {
+interface Props extends XtermOptions {
     id: string;
-    wsUrl: string;
-    tokenUrl: string;
-    clientOptions: ClientOptions;
-    termOptions: ITerminalOptions;
 }
 
-export class Xterm extends Component<Props> {
-    private textEncoder: TextEncoder;
-    private textDecoder: TextDecoder;
+interface State {
+    modal: boolean;
+}
+
+export class Terminal extends Component<Props, State> {
     private container: HTMLElement;
-    private terminal: Terminal;
-
-    private fitAddon: FitAddon;
-    private overlayAddon: OverlayAddon;
-    private zmodemAddon: ZmodemAddon;
-
-    private socket: WebSocket;
-    private token: string;
-    private title: string;
-    private titleFixed: string;
-    private resizeTimeout: number;
-    private resizeOverlay = true;
-
-    private backoff: backoff.Backoff;
-    private backoffLock = false;
-    private doBackoff = true;
-    private reconnect = false;
+    private xterm: Xterm;
 
     constructor(props: Props) {
-        super(props);
-
-        this.textEncoder = new TextEncoder();
-        this.textDecoder = new TextDecoder();
-        this.fitAddon = new FitAddon();
-        this.overlayAddon = new OverlayAddon();
-        this.backoff = backoff.exponential({
-            initialDelay: 100,
-            maxDelay: 10000,
-        });
-        this.backoff.failAfter(15);
-        this.backoff.on('ready', () => {
-            this.backoffLock = false;
-            this.refreshToken().then(this.connect);
-        });
-        this.backoff.on('backoff', (_, delay: number) => {
-            console.log(`[ttyd] will attempt to reconnect websocket in ${delay}ms`);
-            this.backoffLock = true;
-        });
-        this.backoff.on('fail', () => {
-            this.backoffLock = true; // break backoff
-        });
+        super();
+        this.xterm = new Xterm(props, this.showModal);
     }
 
     async componentDidMount() {
-        await this.refreshToken();
-        this.openTerminal();
-        this.connect();
-
-        window.addEventListener('resize', this.onWindowResize);
-        window.addEventListener('beforeunload', this.onWindowUnload);
+        await this.xterm.refreshToken();
+        this.xterm.open(this.container);
+        this.xterm.connect();
     }
 
     componentWillUnmount() {
-        this.socket.close();
-        this.terminal.dispose();
-
-        window.removeEventListener('resize', this.onWindowResize);
-        window.removeEventListener('beforeunload', this.onWindowUnload);
+        this.xterm.dispose();
     }
 
-    render({ id }: Props) {
-        const control = {
-            limit: 100000,
-            highWater: 10,
-            lowWater: 4,
-            pause: () => this.pause(),
-            resume: () => this.resume(),
-        } as FlowControl;
-
+    render({ id }: Props, { modal }: State) {
         return (
-            <div id={id} ref={c => (this.container = c)}>
-                <ZmodemAddon ref={c => (this.zmodemAddon = c)} sender={this.sendData} control={control} />
+            <div id={id} ref={c => (this.container = c as HTMLElement)}>
+                <Modal show={modal}>
+                    <label class="file-label">
+                        <input onChange={this.sendFile} class="file-input" type="file" multiple />
+                        <span class="file-cta">Choose files…</span>
+                    </label>
+                </Modal>
             </div>
         );
     }
 
     @bind
-    private pause() {
-        const { textEncoder, socket } = this;
-        socket.send(textEncoder.encode(Command.PAUSE));
+    showModal() {
+        this.setState({ modal: true });
     }
 
     @bind
-    private resume() {
-        const { textEncoder, socket } = this;
-        socket.send(textEncoder.encode(Command.RESUME));
-    }
-
-    @bind
-    private sendData(data: ArrayLike<number>) {
-        const { socket } = this;
-        const payload = new Uint8Array(data.length + 1);
-        payload[0] = Command.INPUT.charCodeAt(0);
-        payload.set(data, 1);
-        socket.send(payload);
-    }
-
-    @bind
-    private async refreshToken() {
-        try {
-            const resp = await fetch(this.props.tokenUrl);
-            if (resp.ok) {
-                const json = await resp.json();
-                this.token = json.token;
-            }
-        } catch (e) {
-            console.error(`[ttyd] fetch ${this.props.tokenUrl}: `, e);
-        }
-    }
-
-    @bind
-    private onWindowResize() {
-        const { fitAddon } = this;
-        clearTimeout(this.resizeTimeout);
-        this.resizeTimeout = setTimeout(() => fitAddon.fit(), 250) as any;
-    }
-
-    @bind
-    private onWindowUnload(event: BeforeUnloadEvent): any {
-        const { socket } = this;
-        if (socket && socket.readyState === WebSocket.OPEN) {
-            const message = 'Close terminal? this will also terminate the command.';
-            event.returnValue = message;
-            return message;
-        }
-        event.preventDefault();
-    }
-
-    @bind
-    private openTerminal() {
-        this.terminal = new Terminal(this.props.termOptions);
-        const { terminal, container, fitAddon, overlayAddon } = this;
-        window.term = terminal as TtydTerminal;
-        window.term.fit = () => {
-            this.fitAddon.fit();
-        };
-
-        terminal.loadAddon(fitAddon);
-        terminal.loadAddon(overlayAddon);
-        terminal.loadAddon(new WebLinksAddon());
-        terminal.loadAddon(this.zmodemAddon);
-
-        terminal.onTitleChange(data => {
-            if (data && data !== '' && !this.titleFixed) {
-                document.title = data + ' | ' + this.title;
-            }
-        });
-        terminal.onData(this.onTerminalData);
-        terminal.onResize(this.onTerminalResize);
-        if (document.queryCommandSupported && document.queryCommandSupported('copy')) {
-            terminal.onSelectionChange(() => {
-                if (terminal.getSelection() === '') return;
-                overlayAddon.showOverlay('\u2702', 200);
-                document.execCommand('copy');
-            });
-        }
-        terminal.open(container);
-    }
-
-    @bind
-    private connect() {
-        this.socket = new WebSocket(this.props.wsUrl, ['tty']);
-        const { socket } = this;
-
-        socket.binaryType = 'arraybuffer';
-        socket.onopen = this.onSocketOpen;
-        socket.onmessage = this.onSocketData;
-        socket.onclose = this.onSocketClose;
-        socket.onerror = this.onSocketError;
-    }
-
-    @bind
-    private applyOptions(options: any) {
-        const { terminal, fitAddon } = this;
-        const isWebGL2Available = () => {
-            try {
-                const canvas = document.createElement('canvas');
-                return !!(window.WebGL2RenderingContext && canvas.getContext('webgl2'));
-            } catch (e) {
-                return false;
-            }
-        };
-
-        Object.keys(options).forEach(key => {
-            const value = options[key];
-            switch (key) {
-                case 'rendererType':
-                    if (value === 'webgl' && isWebGL2Available()) {
-                        terminal.loadAddon(new WebglAddon());
-                        console.log(`[ttyd] WebGL renderer enabled`);
-                    }
-                    break;
-                case 'disableLeaveAlert':
-                    if (value) {
-                        window.removeEventListener('beforeunload', this.onWindowUnload);
-                        console.log('[ttyd] Leave site alert disabled');
-                    }
-                    break;
-                case 'disableResizeOverlay':
-                    if (value) {
-                        console.log(`[ttyd] Resize overlay disabled`);
-                        this.resizeOverlay = false;
-                    }
-                    break;
-                case 'disableReconnect':
-                    if (value) {
-                        console.log(`[ttyd] Reconnect disabled`);
-                        this.doBackoff = false;
-                    }
-                    break;
-                case 'titleFixed':
-                    if (!value || value === '') return;
-                    console.log(`[ttyd] setting fixed title: ${value}`);
-                    this.titleFixed = value;
-                    document.title = value;
-                    break;
-                default:
-                    console.log(`[ttyd] option: ${key}=${value}`);
-                    terminal.setOption(key, value);
-                    if (key.indexOf('font') === 0) fitAddon.fit();
-                    break;
-            }
-        });
-    }
-
-    @bind
-    private onSocketOpen() {
-        console.log('[ttyd] websocket connection opened');
-        this.backoff.reset();
-
-        const { socket, textEncoder, terminal, fitAddon, overlayAddon } = this;
-        socket.send(textEncoder.encode(JSON.stringify({ AuthToken: this.token })));
-
-        if (this.reconnect) {
-            const dims = fitAddon.proposeDimensions();
-            terminal.reset();
-            terminal.resize(dims.cols, dims.rows);
-            this.onTerminalResize(dims); // may not be triggered by terminal.resize
-            overlayAddon.showOverlay('Reconnected', 300);
-        } else {
-            this.reconnect = true;
-            fitAddon.fit();
-        }
-
-        this.applyOptions(this.props.clientOptions);
-
-        terminal.focus();
-    }
-
-    @bind
-    private onSocketClose(event: CloseEvent) {
-        console.log(`[ttyd] websocket connection closed with code: ${event.code}`);
-
-        const { backoff, doBackoff, backoffLock, overlayAddon } = this;
-        overlayAddon.showOverlay('Connection Closed', null);
-
-        // 1000: CLOSE_NORMAL
-        if (event.code !== 1000 && doBackoff && !backoffLock) {
-            backoff.backoff();
-        }
-    }
-
-    @bind
-    private onSocketError(event: Event) {
-        console.error('[ttyd] websocket connection error: ', event);
-        const { backoff, doBackoff, backoffLock } = this;
-        if (doBackoff && !backoffLock) {
-            backoff.backoff();
-        }
-    }
-
-    @bind
-    private onSocketData(event: MessageEvent) {
-        const { textDecoder, zmodemAddon } = this;
-        const rawData = event.data as ArrayBuffer;
-        const cmd = String.fromCharCode(new Uint8Array(rawData)[0]);
-        const data = rawData.slice(1);
-
-        switch (cmd) {
-            case Command.OUTPUT:
-                zmodemAddon.consume(data);
-                break;
-            case Command.SET_WINDOW_TITLE:
-                this.title = textDecoder.decode(data);
-                document.title = this.title;
-                break;
-            case Command.SET_PREFERENCES:
-                this.applyOptions(JSON.parse(textDecoder.decode(data)));
-                break;
-            default:
-                console.warn(`[ttyd] unknown command: ${cmd}`);
-                break;
-        }
-    }
-
-    @bind
-    private onTerminalResize(size: { cols: number; rows: number }) {
-        const { overlayAddon, socket, textEncoder, resizeOverlay } = this;
-        if (socket.readyState === WebSocket.OPEN) {
-            const msg = JSON.stringify({ columns: size.cols, rows: size.rows });
-            socket.send(textEncoder.encode(Command.RESIZE_TERMINAL + msg));
-        }
-        if (resizeOverlay) {
-            setTimeout(() => {
-                overlayAddon.showOverlay(`${size.cols}x${size.rows}`);
-            }, 500);
-        }
-    }
-
-    @bind
-    private onTerminalData(data: string) {
-        const { socket, textEncoder } = this;
-        if (socket.readyState === WebSocket.OPEN) {
-            socket.send(textEncoder.encode(Command.INPUT + data));
-        }
+    sendFile(event: Event) {
+        this.setState({ modal: false });
+        const files = (event.target as HTMLInputElement).files;
+        if (files) this.xterm.sendFile(files);
     }
 }

html/src/components/terminal/xterm/addons/overlay.ts

@@ -1,11 +1,12 @@
 // ported from hterm.Terminal.prototype.showOverlay
 // https://chromium.googlesource.com/apps/libapps/+/master/hterm/js/hterm_terminal.js
-import { ITerminalAddon, Terminal } from 'xterm';
+import { bind } from 'decko';
+import { ITerminalAddon, Terminal } from '@xterm/xterm';
 
 export class OverlayAddon implements ITerminalAddon {
-    private terminal: Terminal | undefined;
-    private overlayNode: HTMLElement | null;
-    private overlayTimeout: number | null;
+    private terminal: Terminal;
+    private overlayNode: HTMLElement;
+    private overlayTimeout?: number;
 
     constructor() {
         this.overlayNode = document.createElement('div');
@@ -35,8 +36,10 @@ position: absolute;
 
     dispose(): void {}
 
+    @bind
     showOverlay(msg: string, timeout?: number): void {
         const { terminal, overlayNode } = this;
+        if (!terminal.element) return;
 
         overlayNode.style.color = '#101010';
         overlayNode.style.backgroundColor = '#f0f0f0';
@@ -53,23 +56,18 @@ position: absolute;
         overlayNode.style.top = (divSize.height - overlaySize.height) / 2 + 'px';
         overlayNode.style.left = (divSize.width - overlaySize.width) / 2 + 'px';
 
-        if (this.overlayTimeout) {
-            clearTimeout(this.overlayTimeout);
-        }
-        if (timeout === null) {
-            return;
-        }
+        if (this.overlayTimeout) clearTimeout(this.overlayTimeout);
+        if (!timeout) return;
 
-        const self = this;
-        self.overlayTimeout = setTimeout(() => {
+        this.overlayTimeout = window.setTimeout(() => {
             overlayNode.style.opacity = '0';
-            self.overlayTimeout = setTimeout(() => {
+            this.overlayTimeout = window.setTimeout(() => {
                 if (overlayNode.parentNode) {
                     overlayNode.parentNode.removeChild(overlayNode);
                 }
-                self.overlayTimeout = null;
+                this.overlayTimeout = undefined;
                 overlayNode.style.opacity = '0.75';
-            }, 200) as any;
-        }, timeout || 1500) as any;
+            }, 200);
+        }, timeout || 1500);
     }
 }

html/src/components/terminal/xterm/addons/zmodem.ts

@@ -0,0 +1,182 @@
+import { bind } from 'decko';
+import { saveAs } from 'file-saver';
+import { IDisposable, ITerminalAddon, Terminal } from '@xterm/xterm';
+import * as Zmodem from 'zmodem.js/src/zmodem_browser';
+import { TrzszFilter } from 'trzsz';
+
+export interface ZmodeOptions {
+    zmodem: boolean;
+    trzsz: boolean;
+    windows: boolean;
+    trzszDragInitTimeout: number;
+    onSend: () => void;
+    sender: (data: string | Uint8Array) => void;
+    writer: (data: string | Uint8Array) => void;
+}
+
+export class ZmodemAddon implements ITerminalAddon {
+    private disposables: IDisposable[] = [];
+    private terminal: Terminal;
+    private sentry: Zmodem.Sentry;
+    private session: Zmodem.Session;
+    private denier: () => void;
+    private trzszFilter: TrzszFilter;
+
+    constructor(private options: ZmodeOptions) {}
+
+    activate(terminal: Terminal) {
+        this.terminal = terminal;
+        if (this.options.zmodem) this.zmodemInit();
+        if (this.options.trzsz) this.trzszInit();
+    }
+
+    dispose() {
+        for (const d of this.disposables) {
+            d.dispose();
+        }
+        this.disposables.length = 0;
+    }
+
+    consume(data: ArrayBuffer) {
+        try {
+            if (this.options.trzsz) {
+                this.trzszFilter.processServerOutput(data);
+            } else {
+                this.sentry.consume(data);
+            }
+        } catch (e) {
+            console.error('[ttyd] zmodem consume: ', e);
+            this.reset();
+        }
+    }
+
+    @bind
+    private reset() {
+        this.terminal.options.disableStdin = false;
+        this.terminal.focus();
+    }
+
+    private addDisposableListener(target: EventTarget, type: string, listener: EventListener) {
+        target.addEventListener(type, listener);
+        this.disposables.push({ dispose: () => target.removeEventListener(type, listener) });
+    }
+
+    @bind
+    private trzszInit() {
+        const { terminal } = this;
+        const { sender, writer, zmodem } = this.options;
+        this.trzszFilter = new TrzszFilter({
+            writeToTerminal: data => {
+                if (!this.trzszFilter.isTransferringFiles() && zmodem) {
+                    this.sentry.consume(data);
+                } else {
+                    writer(typeof data === 'string' ? data : new Uint8Array(data as ArrayBuffer));
+                }
+            },
+            sendToServer: data => sender(data),
+            terminalColumns: terminal.cols,
+            isWindowsShell: this.options.windows,
+            dragInitTimeout: this.options.trzszDragInitTimeout,
+        });
+        const element = terminal.element as EventTarget;
+        this.addDisposableListener(element, 'dragover', event => event.preventDefault());
+        this.addDisposableListener(element, 'drop', event => {
+            event.preventDefault();
+            this.trzszFilter
+                .uploadFiles((event as DragEvent).dataTransfer?.items as DataTransferItemList)
+                .then(() => console.log('[ttyd] upload success'))
+                .catch(err => console.log('[ttyd] upload failed: ' + err));
+        });
+        this.disposables.push(terminal.onResize(size => this.trzszFilter.setTerminalColumns(size.cols)));
+    }
+
+    @bind
+    private zmodemInit() {
+        const { sender, writer } = this.options;
+        const { terminal, reset, zmodemDetect } = this;
+        this.session = null;
+        this.sentry = new Zmodem.Sentry({
+            to_terminal: octets => writer(new Uint8Array(octets)),
+            sender: octets => sender(new Uint8Array(octets)),
+            on_retract: () => reset(),
+            on_detect: detection => zmodemDetect(detection),
+        });
+        this.disposables.push(
+            terminal.onKey(e => {
+                const event = e.domEvent;
+                if (event.ctrlKey && event.key === 'c') {
+                    if (this.denier) this.denier();
+                }
+            })
+        );
+    }
+
+    @bind
+    private zmodemDetect(detection: Zmodem.Detection): void {
+        const { terminal, receiveFile } = this;
+        terminal.options.disableStdin = true;
+
+        this.denier = () => detection.deny();
+        this.session = detection.confirm();
+        this.session.on('session_end', () => this.reset());
+
+        if (this.session.type === 'send') {
+            this.options.onSend();
+        } else {
+            receiveFile();
+        }
+    }
+
+    @bind
+    public sendFile(files: FileList) {
+        const { session, writeProgress } = this;
+        Zmodem.Browser.send_files(session, files, {
+            on_progress: (_, offer) => writeProgress(offer),
+        })
+            .then(() => session.close())
+            .catch(() => this.reset());
+    }
+
+    @bind
+    private receiveFile() {
+        const { session, writeProgress } = this;
+
+        session.on('offer', offer => {
+            offer.on('input', () => writeProgress(offer));
+            offer
+                .accept()
+                .then(payloads => {
+                    const blob = new Blob(payloads, { type: 'application/octet-stream' });
+                    saveAs(blob, offer.get_details().name);
+                })
+                .catch(() => this.reset());
+        });
+
+        session.start();
+    }
+
+    @bind
+    private writeProgress(offer: Zmodem.Offer) {
+        const { bytesHuman } = this;
+        const file = offer.get_details();
+        const name = file.name;
+        const size = file.size;
+        const offset = offer.get_offset();
+        const percent = ((100 * offset) / size).toFixed(2);
+
+        this.options.writer(`${name} ${percent}% ${bytesHuman(offset, 2)}/${bytesHuman(size, 2)}\r`);
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    private bytesHuman(bytes: any, precision: number): string {
+        if (!/^([-+])?|(\.\d+)(\d+(\.\d+)?|(\d+\.)|Infinity)$/.test(bytes)) {
+            return '-';
+        }
+        if (bytes === 0) return '0';
+        if (typeof precision === 'undefined') precision = 1;
+        const units = ['bytes', 'KB', 'MB', 'GB', 'TB', 'PB'];
+        const num = Math.floor(Math.log(bytes) / Math.log(1024));
+        const value = (bytes / Math.pow(1024, Math.floor(num))).toFixed(precision);
+        return `${value} ${units[num]}`;
+    }
+}

html/src/components/terminal/xterm/index.ts

@@ -0,0 +1,519 @@
+import { bind } from 'decko';
+import type { IDisposable, ITerminalOptions } from '@xterm/xterm';
+import { Terminal } from '@xterm/xterm';
+import { CanvasAddon } from '@xterm/addon-canvas';
+import { WebglAddon } from '@xterm/addon-webgl';
+import { FitAddon } from '@xterm/addon-fit';
+import { WebLinksAddon } from '@xterm/addon-web-links';
+import { ImageAddon } from '@xterm/addon-image';
+import { Unicode11Addon } from '@xterm/addon-unicode11';
+import { OverlayAddon } from './addons/overlay';
+import { ZmodemAddon } from './addons/zmodem';
+
+import '@xterm/xterm/css/xterm.css';
+
+interface TtydTerminal extends Terminal {
+    fit(): void;
+}
+
+declare global {
+    interface Window {
+        term: TtydTerminal;
+    }
+}
+
+enum Command {
+    // server side
+    OUTPUT = '0',
+    SET_WINDOW_TITLE = '1',
+    SET_PREFERENCES = '2',
+
+    // client side
+    INPUT = '0',
+    RESIZE_TERMINAL = '1',
+    PAUSE = '2',
+    RESUME = '3',
+}
+type Preferences = ITerminalOptions & ClientOptions;
+
+export type RendererType = 'dom' | 'canvas' | 'webgl';
+
+export interface ClientOptions {
+    rendererType: RendererType;
+    disableLeaveAlert: boolean;
+    disableResizeOverlay: boolean;
+    enableZmodem: boolean;
+    enableTrzsz: boolean;
+    enableSixel: boolean;
+    titleFixed?: string;
+    isWindows: boolean;
+    trzszDragInitTimeout: number;
+    unicodeVersion: string;
+}
+
+export interface FlowControl {
+    limit: number;
+    highWater: number;
+    lowWater: number;
+}
+
+export interface XtermOptions {
+    wsUrl: string;
+    tokenUrl: string;
+    flowControl: FlowControl;
+    clientOptions: ClientOptions;
+    termOptions: ITerminalOptions;
+}
+
+function toDisposable(f: () => void): IDisposable {
+    return { dispose: f };
+}
+
+function addEventListener(target: EventTarget, type: string, listener: EventListener): IDisposable {
+    target.addEventListener(type, listener);
+    return toDisposable(() => target.removeEventListener(type, listener));
+}
+
+export class Xterm {
+    private disposables: IDisposable[] = [];
+    private textEncoder = new TextEncoder();
+    private textDecoder = new TextDecoder();
+    private written = 0;
+    private pending = 0;
+
+    private terminal: Terminal;
+    private fitAddon = new FitAddon();
+    private overlayAddon = new OverlayAddon();
+    private webglAddon?: WebglAddon;
+    private canvasAddon?: CanvasAddon;
+    private zmodemAddon?: ZmodemAddon;
+
+    private socket?: WebSocket;
+    private token: string;
+    private opened = false;
+    private title?: string;
+    private titleFixed?: string;
+    private resizeOverlay = true;
+    private reconnect = true;
+    private doReconnect = true;
+
+    private writeFunc = (data: ArrayBuffer) => this.writeData(new Uint8Array(data));
+
+    constructor(
+        private options: XtermOptions,
+        private sendCb: () => void
+    ) {}
+
+    dispose() {
+        for (const d of this.disposables) {
+            d.dispose();
+        }
+        this.disposables.length = 0;
+    }
+
+    @bind
+    private register<T extends IDisposable>(d: T): T {
+        this.disposables.push(d);
+        return d;
+    }
+
+    @bind
+    public sendFile(files: FileList) {
+        this.zmodemAddon?.sendFile(files);
+    }
+
+    @bind
+    public async refreshToken() {
+        try {
+            const resp = await fetch(this.options.tokenUrl);
+            if (resp.ok) {
+                const json = await resp.json();
+                this.token = json.token;
+            }
+        } catch (e) {
+            console.error(`[ttyd] fetch ${this.options.tokenUrl}: `, e);
+        }
+    }
+
+    @bind
+    private onWindowUnload(event: BeforeUnloadEvent) {
+        event.preventDefault();
+        if (this.socket?.readyState === WebSocket.OPEN) {
+            const message = 'Close terminal? this will also terminate the command.';
+            event.returnValue = message;
+            return message;
+        }
+        return undefined;
+    }
+
+    @bind
+    public open(parent: HTMLElement) {
+        this.terminal = new Terminal(this.options.termOptions);
+        const { terminal, fitAddon, overlayAddon } = this;
+        window.term = terminal as TtydTerminal;
+        window.term.fit = () => {
+            this.fitAddon.fit();
+        };
+
+        terminal.loadAddon(fitAddon);
+        terminal.loadAddon(overlayAddon);
+        terminal.loadAddon(new WebLinksAddon());
+
+        terminal.open(parent);
+        fitAddon.fit();
+    }
+
+    @bind
+    private initListeners() {
+        const { terminal, fitAddon, overlayAddon, register, sendData } = this;
+        register(
+            terminal.onTitleChange(data => {
+                if (data && data !== '' && !this.titleFixed) {
+                    document.title = data + ' | ' + this.title;
+                }
+            })
+        );
+        register(terminal.onData(data => sendData(data)));
+        register(terminal.onBinary(data => sendData(Uint8Array.from(data, v => v.charCodeAt(0)))));
+        register(
+            terminal.onResize(({ cols, rows }) => {
+                const msg = JSON.stringify({ columns: cols, rows: rows });
+                this.socket?.send(this.textEncoder.encode(Command.RESIZE_TERMINAL + msg));
+                if (this.resizeOverlay) overlayAddon.showOverlay(`${cols}x${rows}`, 300);
+            })
+        );
+        register(
+            terminal.onSelectionChange(() => {
+                if (this.terminal.getSelection() === '') return;
+                try {
+                    document.execCommand('copy');
+                } catch (e) {
+                    return;
+                }
+                this.overlayAddon?.showOverlay('\u2702', 200);
+            })
+        );
+        register(addEventListener(window, 'resize', () => fitAddon.fit()));
+        register(addEventListener(window, 'beforeunload', this.onWindowUnload));
+    }
+
+    @bind
+    public writeData(data: string | Uint8Array) {
+        const { terminal, textEncoder } = this;
+        const { limit, highWater, lowWater } = this.options.flowControl;
+
+        this.written += data.length;
+        if (this.written > limit) {
+            terminal.write(data, () => {
+                this.pending = Math.max(this.pending - 1, 0);
+                if (this.pending < lowWater) {
+                    this.socket?.send(textEncoder.encode(Command.RESUME));
+                }
+            });
+            this.pending++;
+            this.written = 0;
+            if (this.pending > highWater) {
+                this.socket?.send(textEncoder.encode(Command.PAUSE));
+            }
+        } else {
+            terminal.write(data);
+        }
+    }
+
+    @bind
+    public sendData(data: string | Uint8Array) {
+        const { socket, textEncoder } = this;
+        if (socket?.readyState !== WebSocket.OPEN) return;
+
+        if (typeof data === 'string') {
+            const payload = new Uint8Array(data.length * 3 + 1);
+            payload[0] = Command.INPUT.charCodeAt(0);
+            const stats = textEncoder.encodeInto(data, payload.subarray(1));
+            socket.send(payload.subarray(0, (stats.written as number) + 1));
+        } else {
+            const payload = new Uint8Array(data.length + 1);
+            payload[0] = Command.INPUT.charCodeAt(0);
+            payload.set(data, 1);
+            socket.send(payload);
+        }
+    }
+
+    @bind
+    public connect() {
+        this.socket = new WebSocket(this.options.wsUrl, ['tty']);
+        const { socket, register } = this;
+
+        socket.binaryType = 'arraybuffer';
+        register(addEventListener(socket, 'open', this.onSocketOpen));
+        register(addEventListener(socket, 'message', this.onSocketData as EventListener));
+        register(addEventListener(socket, 'close', this.onSocketClose as EventListener));
+        register(addEventListener(socket, 'error', () => (this.doReconnect = false)));
+    }
+
+    @bind
+    private onSocketOpen() {
+        console.log('[ttyd] websocket connection opened');
+
+        const { textEncoder, terminal, overlayAddon } = this;
+        const msg = JSON.stringify({ AuthToken: this.token, columns: terminal.cols, rows: terminal.rows });
+        this.socket?.send(textEncoder.encode(msg));
+
+        if (this.opened) {
+            terminal.reset();
+            terminal.options.disableStdin = false;
+            overlayAddon.showOverlay('Reconnected', 300);
+        } else {
+            this.opened = true;
+        }
+
+        this.doReconnect = this.reconnect;
+        this.initListeners();
+        terminal.focus();
+    }
+
+    @bind
+    private onSocketClose(event: CloseEvent) {
+        console.log(`[ttyd] websocket connection closed with code: ${event.code}`);
+
+        const { refreshToken, connect, doReconnect, overlayAddon } = this;
+        overlayAddon.showOverlay('Connection Closed');
+        this.dispose();
+
+        // 1000: CLOSE_NORMAL
+        if (event.code !== 1000 && doReconnect) {
+            overlayAddon.showOverlay('Reconnecting...');
+            refreshToken().then(connect);
+        } else {
+            const { terminal } = this;
+            const keyDispose = terminal.onKey(e => {
+                const event = e.domEvent;
+                if (event.key === 'Enter') {
+                    keyDispose.dispose();
+                    overlayAddon.showOverlay('Reconnecting...');
+                    refreshToken().then(connect);
+                }
+            });
+            overlayAddon.showOverlay('Press ⏎ to Reconnect');
+        }
+    }
+
+    @bind
+    private parseOptsFromUrlQuery(query: string): Preferences {
+        const { terminal } = this;
+        const { clientOptions } = this.options;
+        const prefs = {} as Preferences;
+        const queryObj = Array.from(new URLSearchParams(query) as unknown as Iterable<[string, string]>);
+
+        for (const [k, queryVal] of queryObj) {
+            let v = clientOptions[k];
+            if (v === undefined) v = terminal.options[k];
+            switch (typeof v) {
+                case 'boolean':
+                    prefs[k] = queryVal === 'true' || queryVal === '1';
+                    break;
+                case 'number':
+                case 'bigint':
+                    prefs[k] = Number.parseInt(queryVal, 10);
+                    break;
+                case 'string':
+                    prefs[k] = queryVal;
+                    break;
+                case 'object':
+                    prefs[k] = JSON.parse(queryVal);
+                    break;
+                default:
+                    console.warn(`[ttyd] maybe unknown option: ${k}=${queryVal}, treating as string`);
+                    prefs[k] = queryVal;
+                    break;
+            }
+        }
+
+        return prefs;
+    }
+
+    @bind
+    private onSocketData(event: MessageEvent) {
+        const { textDecoder } = this;
+        const rawData = event.data as ArrayBuffer;
+        const cmd = String.fromCharCode(new Uint8Array(rawData)[0]);
+        const data = rawData.slice(1);
+
+        switch (cmd) {
+            case Command.OUTPUT:
+                this.writeFunc(data);
+                break;
+            case Command.SET_WINDOW_TITLE:
+                this.title = textDecoder.decode(data);
+                document.title = this.title;
+                break;
+            case Command.SET_PREFERENCES:
+                this.applyPreferences({
+                    ...this.options.clientOptions,
+                    ...JSON.parse(textDecoder.decode(data)),
+                    ...this.parseOptsFromUrlQuery(window.location.search),
+                } as Preferences);
+                break;
+            default:
+                console.warn(`[ttyd] unknown command: ${cmd}`);
+                break;
+        }
+    }
+
+    @bind
+    private applyPreferences(prefs: Preferences) {
+        const { terminal, fitAddon, register } = this;
+        if (prefs.enableZmodem || prefs.enableTrzsz) {
+            this.zmodemAddon = new ZmodemAddon({
+                zmodem: prefs.enableZmodem,
+                trzsz: prefs.enableTrzsz,
+                windows: prefs.isWindows,
+                trzszDragInitTimeout: prefs.trzszDragInitTimeout,
+                onSend: this.sendCb,
+                sender: this.sendData,
+                writer: this.writeData,
+            });
+            this.writeFunc = data => this.zmodemAddon?.consume(data);
+            terminal.loadAddon(register(this.zmodemAddon));
+        }
+
+        for (const [key, value] of Object.entries(prefs)) {
+            switch (key) {
+                case 'rendererType':
+                    this.setRendererType(value);
+                    break;
+                case 'disableLeaveAlert':
+                    if (value) {
+                        window.removeEventListener('beforeunload', this.onWindowUnload);
+                        console.log('[ttyd] Leave site alert disabled');
+                    }
+                    break;
+                case 'disableResizeOverlay':
+                    if (value) {
+                        console.log('[ttyd] Resize overlay disabled');
+                        this.resizeOverlay = false;
+                    }
+                    break;
+                case 'disableReconnect':
+                    if (value) {
+                        console.log('[ttyd] Reconnect disabled');
+                        this.reconnect = false;
+                        this.doReconnect = false;
+                    }
+                    break;
+                case 'enableZmodem':
+                    if (value) console.log('[ttyd] Zmodem enabled');
+                    break;
+                case 'enableTrzsz':
+                    if (value) console.log('[ttyd] trzsz enabled');
+                    break;
+                case 'trzszDragInitTimeout':
+                    if (value) console.log(`[ttyd] trzsz drag init timeout: ${value}`);
+                    break;
+                case 'enableSixel':
+                    if (value) {
+                        terminal.loadAddon(register(new ImageAddon()));
+                        console.log('[ttyd] Sixel enabled');
+                    }
+                    break;
+                case 'titleFixed':
+                    if (!value || value === '') return;
+                    console.log(`[ttyd] setting fixed title: ${value}`);
+                    this.titleFixed = value;
+                    document.title = value;
+                    break;
+                case 'isWindows':
+                    if (value) console.log('[ttyd] is windows');
+                    break;
+                case 'unicodeVersion':
+                    switch (value) {
+                        case 6:
+                        case '6':
+                            console.log('[ttyd] setting Unicode version: 6');
+                            break;
+                        case 11:
+                        case '11':
+                        default:
+                            console.log('[ttyd] setting Unicode version: 11');
+                            terminal.loadAddon(new Unicode11Addon());
+                            terminal.unicode.activeVersion = '11';
+                            break;
+                    }
+                    break;
+                default:
+                    console.log(`[ttyd] option: ${key}=${JSON.stringify(value)}`);
+                    if (terminal.options[key] instanceof Object) {
+                        terminal.options[key] = Object.assign({}, terminal.options[key], value);
+                    } else {
+                        terminal.options[key] = value;
+                    }
+                    if (key.indexOf('font') === 0) fitAddon.fit();
+                    break;
+            }
+        }
+    }
+
+    @bind
+    private setRendererType(value: RendererType) {
+        const { terminal } = this;
+        const disposeCanvasRenderer = () => {
+            try {
+                this.canvasAddon?.dispose();
+            } catch {
+                // ignore
+            }
+            this.canvasAddon = undefined;
+        };
+        const disposeWebglRenderer = () => {
+            try {
+                this.webglAddon?.dispose();
+            } catch {
+                // ignore
+            }
+            this.webglAddon = undefined;
+        };
+        const enableCanvasRenderer = () => {
+            if (this.canvasAddon) return;
+            this.canvasAddon = new CanvasAddon();
+            disposeWebglRenderer();
+            try {
+                this.terminal.loadAddon(this.canvasAddon);
+                console.log('[ttyd] canvas renderer loaded');
+            } catch (e) {
+                console.log('[ttyd] canvas renderer could not be loaded, falling back to dom renderer', e);
+                disposeCanvasRenderer();
+            }
+        };
+        const enableWebglRenderer = () => {
+            if (this.webglAddon) return;
+            this.webglAddon = new WebglAddon();
+            disposeCanvasRenderer();
+            try {
+                this.webglAddon.onContextLoss(() => {
+                    this.webglAddon?.dispose();
+                });
+                terminal.loadAddon(this.webglAddon);
+                console.log('[ttyd] WebGL renderer loaded');
+            } catch (e) {
+                console.log('[ttyd] WebGL renderer could not be loaded, falling back to canvas renderer', e);
+                disposeWebglRenderer();
+                enableCanvasRenderer();
+            }
+        };
+
+        switch (value) {
+            case 'canvas':
+                enableCanvasRenderer();
+                break;
+            case 'webgl':
+                enableWebglRenderer();
+                break;
+            case 'dom':
+                disposeWebglRenderer();
+                disposeCanvasRenderer();
+                console.log('[ttyd] dom renderer loaded');
+                break;
+            default:
+                break;
+        }
+    }
+}

html/src/components/zmodem/index.tsx

@@ -1,209 +0,0 @@
-import { bind } from 'decko';
-import { h, Component } from 'preact';
-import { saveAs } from 'file-saver';
-import { IDisposable, ITerminalAddon, Terminal } from 'xterm';
-import * as Zmodem from 'zmodem.js/src/zmodem_browser';
-
-import { Modal } from '../modal';
-
-export interface FlowControl {
-    limit: number;
-    highWater: number;
-    lowWater: number;
-
-    pause: () => void;
-    resume: () => void;
-}
-
-interface Props {
-    sender: (data: ArrayLike<number>) => void;
-    control: FlowControl;
-}
-
-interface State {
-    modal: boolean;
-}
-
-export class ZmodemAddon extends Component<Props, State> implements ITerminalAddon {
-    private terminal: Terminal | undefined;
-    private keyDispose: IDisposable | undefined;
-    private sentry: Zmodem.Sentry;
-    private session: Zmodem.Session;
-
-    private written = 0;
-    private pending = 0;
-
-    constructor(props: Props) {
-        super(props);
-
-        this.zmodemInit();
-    }
-
-    render(_, { modal }: State) {
-        return (
-            <Modal show={modal}>
-                <label class="file-label">
-                    <input onChange={this.sendFile} class="file-input" type="file" multiple />
-                    <span class="file-cta">Choose files…</span>
-                </label>
-            </Modal>
-        );
-    }
-
-    activate(terminal: Terminal): void {
-        this.terminal = terminal;
-    }
-
-    dispose(): void {}
-
-    consume(data: ArrayBuffer) {
-        const { sentry, handleError } = this;
-        try {
-            sentry.consume(data);
-        } catch (e) {
-            handleError(e, 'consume');
-        }
-    }
-
-    @bind
-    private handleError(e: Error, reason: string) {
-        console.error(`[ttyd] zmodem ${reason}: `, e);
-        this.zmodemReset();
-    }
-
-    @bind
-    private zmodemInit() {
-        this.session = null;
-        this.sentry = new Zmodem.Sentry({
-            to_terminal: (octets: ArrayBuffer) => this.zmodemWrite(octets),
-            sender: (octets: ArrayLike<number>) => this.zmodemSend(octets),
-            on_retract: () => this.zmodemReset(),
-            on_detect: (detection: Zmodem.Detection) => this.zmodemDetect(detection),
-        });
-    }
-
-    @bind
-    private zmodemReset() {
-        this.terminal.setOption('disableStdin', false);
-
-        if (this.keyDispose) {
-            this.keyDispose.dispose();
-            this.keyDispose = null;
-        }
-        this.zmodemInit();
-
-        this.terminal.focus();
-    }
-
-    @bind
-    private zmodemWrite(data: ArrayBuffer): void {
-        const { limit, highWater, lowWater, pause, resume } = this.props.control;
-        const { terminal } = this;
-        const rawData = new Uint8Array(data);
-
-        this.written += rawData.length;
-        if (this.written > limit) {
-            terminal.write(rawData, () => {
-                this.pending = Math.max(this.pending - 1, 0);
-                if (this.pending < lowWater) {
-                    resume();
-                }
-            });
-            this.pending++;
-            this.written = 0;
-            if (this.pending > highWater) {
-                pause();
-            }
-        } else {
-            terminal.write(rawData);
-        }
-    }
-
-    @bind
-    private zmodemSend(data: ArrayLike<number>): void {
-        this.props.sender(data);
-    }
-
-    @bind
-    private zmodemDetect(detection: Zmodem.Detection): void {
-        const { terminal, receiveFile, zmodemReset } = this;
-        terminal.setOption('disableStdin', true);
-
-        this.keyDispose = terminal.onKey(e => {
-            const event = e.domEvent;
-            if (event.ctrlKey && event.key === 'c') {
-                detection.deny();
-            }
-        });
-
-        this.session = detection.confirm();
-        this.session.on('session_end', zmodemReset);
-
-        if (this.session.type === 'send') {
-            this.setState({ modal: true });
-        } else {
-            receiveFile();
-        }
-    }
-
-    @bind
-    private sendFile(event: Event) {
-        this.setState({ modal: false });
-
-        const { session, writeProgress, handleError } = this;
-        const files: FileList = (event.target as HTMLInputElement).files;
-
-        Zmodem.Browser.send_files(session, files, {
-            on_progress: (_, offer: Zmodem.Offer) => writeProgress(offer),
-        })
-            .then(() => session.close())
-            .catch(e => handleError(e, 'send'));
-    }
-
-    @bind
-    private receiveFile() {
-        const { session, writeProgress, handleError } = this;
-
-        session.on('offer', (offer: Zmodem.Offer) => {
-            const fileBuffer = [];
-            offer.on('input', payload => {
-                writeProgress(offer);
-                fileBuffer.push(new Uint8Array(payload));
-            });
-            offer
-                .accept()
-                .then(() => {
-                    const blob = new Blob(fileBuffer, { type: 'application/octet-stream' });
-                    saveAs(blob, offer.get_details().name);
-                })
-                .catch(e => handleError(e, 'receive'));
-        });
-
-        session.start();
-    }
-
-    @bind
-    private writeProgress(offer: Zmodem.Offer) {
-        const { terminal, bytesHuman } = this;
-
-        const file = offer.get_details();
-        const name = file.name;
-        const size = file.size;
-        const offset = offer.get_offset();
-        const percent = ((100 * offset) / size).toFixed(2);
-
-        terminal.write(`${name} ${percent}% ${bytesHuman(offset, 2)}/${bytesHuman(size, 2)}\r`);
-    }
-
-    private bytesHuman(bytes: any, precision: number): string {
-        if (!/^([-+])?|(\.\d+)(\d+(\.\d+)?|(\d+\.)|Infinity)$/.test(bytes)) {
-            return '-';
-        }
-        if (bytes === 0) return '0';
-        if (typeof precision === 'undefined') precision = 1;
-        const units = ['bytes', 'KB', 'MB', 'GB', 'TB', 'PB'];
-        const num = Math.floor(Math.log(bytes) / Math.log(1024));
-        const value = (bytes / Math.pow(1024, Math.floor(num))).toFixed(precision);
-        return `${value} ${units[num]}`;
-    }
-}

html/src/index.tsx

@@ -1,3 +1,6 @@
+if (process.env.NODE_ENV === 'development') {
+    require('preact/debug');
+}
 import 'whatwg-fetch';
 import { h, render } from 'preact';
 import { App } from './components/app';

html/src/template.html

@@ -3,6 +3,7 @@
 <head>
     <meta charset="UTF-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
+    <meta name="apple-mobile-web-app-capable" content="yes">
     <title><%= htmlWebpackPlugin.options.title %></title>
     <link inline rel="icon" type="image/png" href="favicon.png">
     <% for (const css in htmlWebpackPlugin.files.css) { %>

html/tsconfig.json

@@ -1,20 +1,16 @@
 {
+  "extends": "./node_modules/gts/tsconfig-google.json",
   "compilerOptions": {
-    "target": "es2015",
-    "module": "es2015",
-    "lib": [
-      "es2015",
-      "dom"
-    ],
-    "allowJs": true,
-    "jsx": "react",
-    "jsxFactory": "h",
-    "sourceMap": true,
     "moduleResolution": "node",
     "esModuleInterop": true,
+    "jsx": "react",
+    "jsxFactory": "h",
+    "allowJs": true,
+    "noImplicitAny": false,
+    "declaration": false,
     "experimentalDecorators": true,
-    "noImplicitReturns": true,
-    "noUnusedParameters": true
+    "strictPropertyInitialization": false,
+    "lib": ["es2019", "dom"],
   },
   "include": [
     "src/**/*.tsx",

html/tslint.json

@@ -1,7 +0,0 @@
-{
-  "extends": "gts/tslint.json",
-  "rules": {
-    "deprecation": false,
-    "no-any": false
-  }
-}

html/webpack.config.js

@@ -1,9 +1,10 @@
 const path = require('path');
 const { merge } = require('webpack-merge');
+const ESLintPlugin = require('eslint-webpack-plugin');
 const CopyWebpackPlugin = require('copy-webpack-plugin');
 const HtmlWebpackPlugin = require('html-webpack-plugin');
-const MiniCssExtractPlugin = require("mini-css-extract-plugin");
-const OptimizeCSSAssetsPlugin = require("optimize-css-assets-webpack-plugin");
+const MiniCssExtractPlugin = require('mini-css-extract-plugin');
+const CssMinimizerPlugin = require('css-minimizer-webpack-plugin');
 const TerserPlugin = require('terser-webpack-plugin');
 
 const devMode = process.env.NODE_ENV !== 'production';
@@ -11,46 +12,39 @@ const devMode = process.env.NODE_ENV !== 'production';
 const baseConfig = {
     context: path.resolve(__dirname, 'src'),
     entry: {
-        app: './index.tsx'
+        app: './index.tsx',
     },
     output: {
         path: path.resolve(__dirname, 'dist'),
-        filename: devMode ? '[name].js' : '[name].[hash].js',
+        filename: devMode ? '[name].js' : '[name].[contenthash].js',
     },
     module: {
         rules: [
-            {
-                test: /\.ts$/,
-                enforce: 'pre',
-                use: 'tslint-loader',
-            },
             {
                 test: /\.tsx?$/,
                 use: 'ts-loader',
-                exclude: /node_modules/
+                exclude: /node_modules/,
             },
             {
                 test: /\.s?[ac]ss$/,
-                use: [
-                    devMode ? 'style-loader' : MiniCssExtractPlugin.loader,
-                    'css-loader',
-                    'sass-loader',
-                ],
+                use: [devMode ? 'style-loader' : MiniCssExtractPlugin.loader, 'css-loader', 'sass-loader'],
             },
-        ]
+        ],
     },
     resolve: {
-        extensions: [ '.tsx', '.ts', '.js' ]
+        extensions: ['.tsx', '.ts', '.js'],
     },
     plugins: [
+        new ESLintPlugin({
+            context: path.resolve(__dirname, '.'),
+            extensions: ['js', 'jsx', 'ts', 'tsx'],
+        }),
         new CopyWebpackPlugin({
-            patterns:[
-                { from: './favicon.png', to: '.' }
-            ],
+            patterns: [{ from: './favicon.png', to: '.' }],
         }),
         new MiniCssExtractPlugin({
-            filename: devMode ? '[name].css' : '[name].[hash].css',
-            chunkFilename: devMode ? '[id].css' : '[id].[hash].css',
+            filename: devMode ? '[name].css' : '[name].[contenthash].css',
+            chunkFilename: devMode ? '[id].css' : '[id].[contenthash].css',
         }),
         new HtmlWebpackPlugin({
             inject: false,
@@ -59,25 +53,39 @@ const baseConfig = {
                 collapseWhitespace: true,
             },
             title: 'ttyd - Terminal',
-            template: './template.html'
-        })
+            template: './template.html',
+        }),
     ],
-    performance : {
-        hints : false
+    performance: {
+        hints: false,
     },
 };
 
 const devConfig = {
     mode: 'development',
     devServer: {
-        contentBase: path.join(__dirname, 'dist'),
+        static: path.join(__dirname, 'dist'),
         compress: true,
         port: 9000,
-        proxy: [{
+        client: {
+            overlay: {
+                errors: true,
+                warnings: false,
+            },
+        },
+        proxy: [
+            {
                 context: ['/token', '/ws'],
                 target: 'http://localhost:7681',
-            ws: true
-        }]
+                ws: true,
+            },
+        ],
+        webSocketServer: {
+            type: 'sockjs',
+            options: {
+                path: '/sockjs-node',
+            },
+        },
     },
     devtool: 'inline-source-map',
 };
@@ -85,22 +93,9 @@ const devConfig =  {
 const prodConfig = {
     mode: 'production',
     optimization: {
-        minimizer: [
-            new TerserPlugin({
-                sourceMap: true
-            }),
-            new OptimizeCSSAssetsPlugin({
-                cssProcessorOptions: {
-                    map: {
-                        inline: false,
-                        annotation: true
-                    }
-                }
-            }),
-        ]
+        minimizer: [new TerserPlugin(), new CssMinimizerPlugin()],
     },
     devtool: 'source-map',
 };
 
-
 module.exports = merge(baseConfig, devMode ? devConfig : prodConfig);

man/ttyd.1

@@ -1,8 +1,9 @@
+.nh
 .TH ttyd 1 "September 2016" ttyd "User Manual"
 
 .SH NAME
 .PP
-ttyd \- Share your terminal over the web
+ttyd - Share your terminal over the web
 
 
 .SH SYNOPSIS
@@ -10,18 +11,20 @@ ttyd \- Share your terminal over the web
 \fBttyd\fP [options] <command> [<arguments...>]
 
 
-.SH Description
+.SH DESCRIPTION
 .PP
-ttyd is a command\-line tool for sharing terminal over the web that runs in *nix and windows systems, with the following features:
+ttyd is a command-line tool for sharing terminal over the web that runs in *nix and windows systems, with the following features:
 
 .RS
 .IP \(bu 2
 Built on top of Libwebsockets with libuv for speed
 .IP \(bu 2
-Fully\-featured terminal based on Xterm.js with CJK (Chinese, Japanese, Korean) and IME support
+Fully-featured terminal based on Xterm.js with CJK (Chinese, Japanese, Korean) and IME support
 .IP \(bu 2
 Graphical ZMODEM integration with lrzsz support
 .IP \(bu 2
+Sixel image output support
+.IP \(bu 2
 SSL support based on OpenSSL
 .IP \(bu 2
 Run any custom command with options
@@ -35,123 +38,206 @@ Cross platform: macOS, Linux, FreeBSD/OpenBSD, OpenWrt/LEDE, Windows
 
 .SH OPTIONS
 .PP
-\-p, \-\-port <port>
+-p, --port 
       Port to listen (default: 7681, use \fB\fC0\fR for random port)
 
 .PP
-\-i, \-\-interface <interface>
+-i, --interface 
       Network interface to bind (eg: eth0), or UNIX domain socket path (eg: /var/run/ttyd.sock)
 
 .PP
-\-c, \-\-credential USER[:PASSWORD]
+-U, --socket-owner
+      User owner of the UNIX domain socket file, when enabled (eg: user:group)
+
+.PP
+-c, --credential USER[:PASSWORD]
       Credential for Basic Authentication (format: username:password)
 
 .PP
-\-u, \-\-uid <uid>
+-H, --auth-header 
+      HTTP Header name for auth proxy, this will configure ttyd to let a HTTP reverse proxy handle authentication
+
+.PP
+-u, --uid 
       User id to run with
 
 .PP
-\-g, \-\-gid <gid>
+-g, --gid 
       Group id to run with
 
 .PP
-\-s, \-\-signal <signal string>
+-s, --signal 
       Signal to send to the command when exit it (default: 1, SIGHUP)
 
 .PP
-\-a, \-\-url\-arg
-      Allow client to send command line arguments in URL (eg: 
-\[la]http://localhost:7681?arg=foo&arg=bar\[ra])
+-w, --cwd 
+      Working directory to be set for the child program
 
 .PP
-\-R, \-\-readonly
-      Do not allow clients to write to the TTY
+-a, --url-arg
+      Allow client to send command line arguments in URL (eg: http://localhost:7681?arg=foo&arg=bar)
 
 .PP
-\-t, \-\-client\-option <key=value>
-      Send option to client (format: key=value), repeat to add more options
+-W, --writable
+      Allow clients to write to the TTY (readonly by default)
 
 .PP
-\-T, \-\-terminal\-type
-      Terminal type to report, default: xterm\-256color
+-t, --client-option 
+      Send option to client (format: key=value), repeat to add more options, see \fBCLIENT OPTIONS\fP for details
 
 .PP
-\-O, \-\-check\-origin
+-T, --terminal-type
+      Terminal type to report, default: xterm-256color
+
+.PP
+-O, --check-origin
       Do not allow websocket connection from different origin
 
 .PP
-\-m, \-\-max\-clients
+-m, --max-clients
       Maximum clients to support (default: 0, no limit)
 
 .PP
-\-o, \-\-once
+-o, --once
       Accept only one client and exit on disconnection
 
 .PP
-\-B, \-\-browser
+-q, --exit-no-conn
+      Exit on all clients disconnection
+
+.PP
+-B, --browser
       Open terminal with the default system browser
 
 .PP
-\-I, \-\-index <index file>
+-I, --index 
       Custom index.html path
 
 .PP
-\-b, \-\-base\-path
-      Expected base path for requests coming from a reverse proxy (eg: /mounted/here)
+-b, --base-path
+      Expected base path for requests coming from a reverse proxy (eg: /mounted/here, max length: 128)
 
 .PP
-\-P, \-\-ping\-interval
-      Websocket ping interval(sec) (default: 300)
+-P, --ping-interval
+      Websocket ping interval(sec) (default: 5)
 
 .PP
-\-6, \-\-ipv6
+-6, --ipv6
       Enable IPv6 support
 
 .PP
-\-S, \-\-ssl
+-S, --ssl
       Enable SSL
 
 .PP
-\-C, \-\-ssl\-cert <cert path>
+-C, --ssl-cert 
       SSL certificate file path
 
 .PP
-\-K, \-\-ssl\-key <key path>
+-K, --ssl-key 
       SSL key file path
 
 .PP
-\-A, \-\-ssl\-ca <ca path>
+-A, --ssl-ca 
       SSL CA file path for client certificate verification
 
 .PP
-\-d, \-\-debug <level>
+-d, --debug 
       Set log level (default: 7)
 
 .PP
-\-v, \-\-version
+-v, --version
       Print the version and exit
 
 .PP
-\-h, \-\-help
+-h, --help
       Print this text and exit
 
 
-.SH Examples
+.SH CLIENT OPTIONS
 .PP
-ttyd starts web server at port 7681 by default, you can use the \-p option to change it, the command will be started with arguments as options. For example, run:
+ttyd has a mechanism to pass server side command-line arguments to the browser page which is called \fBclient options\fP:
 
 .PP
 .RS
 
 .nf
-ttyd \-p 8080 bash \-x
+-t, --client-option     Send option to client (format: key=value), repeat to add more options
+
+.fi
+.RE
+
+.SH Basic usage
+.RS
+.IP \(bu 2
+\fB\fC-t rendererType=canvas\fR: use the \fB\fCcanvas\fR renderer for xterm.js (default: \fB\fCwebgl\fR)
+.IP \(bu 2
+\fB\fC-t disableLeaveAlert=true\fR: disable the leave page alert
+.IP \(bu 2
+\fB\fC-t disableResizeOverlay=true\fR: disable the terminal resize overlay
+.IP \(bu 2
+\fB\fC-t disableReconnect=true\fR: prevent the terminal from reconnecting on connection error/close
+.IP \(bu 2
+\fB\fC-t enableZmodem=true\fR: enable ZMODEM
+\[la]https://en.wikipedia.org/wiki/ZMODEM\[ra] / lrzsz
+\[la]https://ohse.de/uwe/software/lrzsz.html\[ra] file transfer support
+.IP \(bu 2
+\fB\fC-t enableTrzsz=true\fR: enable trzsz
+\[la]https://trzsz.github.io\[ra] file transfer support
+.IP \(bu 2
+\fB\fC-t enableSixel=true\fR: enable Sixel
+\[la]https://en.wikipedia.org/wiki/Sixel\[ra] image output support (Usage
+\[la]https://saitoha.github.io/libsixel/\[ra])
+.IP \(bu 2
+\fB\fC-t titleFixed=hello\fR: set a fixed title for the browser window
+.IP \(bu 2
+\fB\fC-t fontSize=20\fR: change the font size of the terminal
+
+.RE
+
+.SH Advanced usage
+.PP
+You can use the client option to change all the settings of xterm defined in ITerminalOptions
+\[la]https://xtermjs.org/docs/api/terminal/interfaces/iterminaloptions/\[ra], examples:
+
+.RS
+.IP \(bu 2
+\fB\fC-t cursorStyle=bar\fR: set cursor style to \fB\fCbar\fR
+.IP \(bu 2
+\fB\fC-t lineHeight=1.5\fR: set line-height to \fB\fC1.5\fR
+.IP \(bu 2
+\fB\fC-t 'theme={"background": "green"}'\fR: set background color to \fB\fCgreen\fR
+
+.RE
+
+.PP
+to try the example options above, run:
+
+.PP
+.RS
+
+.nf
+ttyd -t cursorStyle=bar -t lineHeight=1.5 -t 'theme={"background": "green"}' bash
+
+.fi
+.RE
+
+
+.SH EXAMPLES
+.PP
+ttyd starts web server at port 7681 by default, you can use the -p option to change it, the command will be started with arguments as options. For example, run:
+
+.PP
+.RS
+
+.nf
+ttyd -p 8080 bash -x
 
 .fi
 .RE
 
 .PP
-Then open 
-\[la]http://localhost:8080\[ra] with a browser, you will get a bash shell with debug mode enabled. More examples:
+Then open http://localhost:8080 with a browser, you will get a bash shell with debug mode enabled. More examples:
 
 .RS
 .IP \(bu 2
@@ -159,12 +245,12 @@ If you want to login with your system accounts on the web browser, run \fB\fCtty
 .IP \(bu 2
 You can even run a none shell command like vim, try: \fB\fCttyd vim\fR, the web browser will show you a vim editor.
 .IP \(bu 2
-Sharing single process with multiple clients: \fB\fCttyd tmux new \-A \-s ttyd vim\fR, run \fB\fCtmux new \-A \-s ttyd\fR to connect to the tmux session from terminal.
+Sharing single process with multiple clients: \fB\fCttyd tmux new -A -s ttyd vim\fR, run \fB\fCtmux new -A -s ttyd\fR to connect to the tmux session from terminal.
 
 .RE
 
 
-.SH SSL how\-to
+.SH SSL how-to
 .PP
 Generate SSL CA and self signed server/client certificates:
 
@@ -173,18 +259,18 @@ Generate SSL CA and self signed server/client certificates:
 
 .nf
 # CA certificate (FQDN must be different from server/client)
-openssl genrsa \-out ca.key 2048
-openssl req \-new \-x509 \-days 365 \-key ca.key \-subj "/C=CN/ST=GD/L=SZ/O=Acme, Inc./CN=Acme Root CA" \-out ca.crt
+openssl genrsa -out ca.key 2048
+openssl req -new -x509 -days 365 -key ca.key -subj "/C=CN/ST=GD/L=SZ/O=Acme, Inc./CN=Acme Root CA" -out ca.crt
 
 # server certificate (for multiple domains, change subjectAltName to: DNS:example.com,DNS:www.example.com)
-openssl req \-newkey rsa:2048 \-nodes \-keyout server.key \-subj "/C=CN/ST=GD/L=SZ/O=Acme, Inc./CN=localhost" \-out server.csr
-openssl x509 \-sha256 \-req \-extfile <(printf "subjectAltName=DNS:localhost") \-days 365 \-in server.csr \-CA ca.crt \-CAkey ca.key \-CAcreateserial \-out server.crt
+openssl req -newkey rsa:2048 -nodes -keyout server.key -subj "/C=CN/ST=GD/L=SZ/O=Acme, Inc./CN=localhost" -out server.csr
+openssl x509 -sha256 -req -extfile <(printf "subjectAltName=DNS:localhost") -days 365 -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out server.crt
 
 # client certificate (the p12/pem format may be useful for some clients)
-openssl req \-newkey rsa:2048 \-nodes \-keyout client.key \-subj "/C=CN/ST=GD/L=SZ/O=Acme, Inc./CN=client" \-out client.csr
-openssl x509 \-req \-days 365 \-in client.csr \-CA ca.crt \-CAkey ca.key \-CAcreateserial \-out client.crt
-openssl pkcs12 \-export \-clcerts \-in client.crt \-inkey client.key \-out client.p12
-openssl pkcs12 \-in client.p12 \-out client.pem \-clcerts
+openssl req -newkey rsa:2048 -nodes -keyout client.key -subj "/C=CN/ST=GD/L=SZ/O=Acme, Inc./CN=client" -out client.csr
+openssl x509 -req -days 365 -in client.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out client.crt
+openssl pkcs12 -export -clcerts -in client.crt -inkey client.key -out client.p12
+openssl pkcs12 -in client.p12 -out client.pem -clcerts
 
 .fi
 .RE
@@ -196,7 +282,7 @@ Then start ttyd:
 .RS
 
 .nf
-ttyd \-\-ssl \-\-ssl\-cert server.crt \-\-ssl\-key server.key \-\-ssl\-ca ca.crt bash
+ttyd --ssl --ssl-cert server.crt --ssl-key server.key --ssl-ca ca.crt bash
 
 .fi
 .RE
@@ -208,13 +294,13 @@ You may want to test the client certificate verification with \fIcurl\fP(1):
 .RS
 
 .nf
-curl \-\-insecure \-\-cert client.p12[:password] \-v https://localhost:7681
+curl --insecure --cert client.p12[:password] -v https://localhost:7681
 
 .fi
 .RE
 
 .PP
-If you don't want to enable client certificate verification, remove the \fB\fC\-\-ssl\-ca\fR option.
+If you don't want to enable client certificate verification, remove the \fB\fC--ssl-ca\fR option.
 
 
 .SH Docker and ttyd
@@ -223,9 +309,9 @@ Docker containers are jailed environments which are more secure, this is useful
 
 .RS
 .IP \(bu 2
-Sharing single docker container with multiple clients: docker run \-it \-\-rm \-p 7681:7681 tsl0922/ttyd.
+Sharing single docker container with multiple clients: docker run -it --rm -p 7681:7681 tsl0922/ttyd.
 .IP \(bu 2
-Creating new docker container for each client: ttyd docker run \-it \-\-rm ubuntu.
+Creating new docker container for each client: ttyd docker run -it --rm ubuntu.
 
 .RE
 
@@ -238,14 +324,14 @@ Sample config to proxy ttyd under the \fB\fC/ttyd\fR path:
 .RS
 
 .nf
-location \~ ^/ttyd(.*)$ {
-    proxy\_http\_version 1.1;
-    proxy\_set\_header Host $host;
-    proxy\_set\_header X\-Forwarded\-Proto $scheme;
-    proxy\_set\_header X\-Forwarded\-For $proxy\_add\_x\_forwarded\_for;
-    proxy\_set\_header Upgrade $http\_upgrade;
-    proxy\_set\_header Connection "upgrade";
-    proxy\_pass http://127.0.0.1:7681/$1;
+location ~ ^/ttyd(.*)$ {
+    proxy_http_version 1.1;
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-Proto $scheme;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+    proxy_pass http://127.0.0.1:7681/$1;
 }
 
 .fi
@@ -254,5 +340,4 @@ location \~ ^/ttyd(.*)$ {
 
 .SH AUTHOR
 .PP
-Shuanglei Tao <tsl0922@gmail.com> Visit 
-\[la]https://github.com/tsl0922/ttyd\[ra] to get more information and report bugs.
+Shuanglei Tao <tsl0922@gmail.com> Visit https://github.com/tsl0922/ttyd to get more information and report bugs.

man/ttyd.man.md

@@ -7,12 +7,13 @@ ttyd 1 "September 2016" ttyd "User Manual"
 # SYNOPSIS
   **ttyd** [options] \<command\> [\<arguments...\>]
 
-# Description
+# DESCRIPTION
   ttyd is a command-line tool for sharing terminal over the web that runs in *nix and windows systems, with the following features:
 
   - Built on top of Libwebsockets with libuv for speed
   - Fully-featured terminal based on Xterm.js with CJK (Chinese, Japanese, Korean) and IME support
   - Graphical ZMODEM integration with lrzsz support
+  - Sixel image output support
   - SSL support based on OpenSSL
   - Run any custom command with options
   - Basic authentication support and many other custom options
@@ -25,9 +26,15 @@ ttyd 1 "September 2016" ttyd "User Manual"
   -i, --interface <interface>
       Network interface to bind (eg: eth0), or UNIX domain socket path (eg: /var/run/ttyd.sock)
 
+  -U, --socket-owner
+      User owner of the UNIX domain socket file, when enabled (eg: user:group)
+
   -c, --credential USER[:PASSWORD]
       Credential for Basic Authentication (format: username:password)
 
+  -H, --auth-header <name>
+      HTTP Header name for auth proxy, this will configure ttyd to let a HTTP reverse proxy handle authentication
+
   -u, --uid <uid>
       User id to run with
 
@@ -37,14 +44,17 @@ ttyd 1 "September 2016" ttyd "User Manual"
   -s, --signal <signal string>
       Signal to send to the command when exit it (default: 1, SIGHUP)
 
+  -w, --cwd <path>
+      Working directory to be set for the child program
+
   -a, --url-arg
       Allow client to send command line arguments in URL (eg: http://localhost:7681?arg=foo&arg=bar)
 
-  -R, --readonly
-      Do not allow clients to write to the TTY
+  -W, --writable
+      Allow clients to write to the TTY (readonly by default)
 
   -t, --client-option <key=value>
-      Send option to client (format: key=value), repeat to add more options
+      Send option to client (format: key=value), repeat to add more options, see **CLIENT OPTIONS** for details
 
   -T, --terminal-type
       Terminal type to report, default: xterm-256color
@@ -58,6 +68,9 @@ ttyd 1 "September 2016" ttyd "User Manual"
   -o, --once
       Accept only one client and exit on disconnection
 
+  -q, --exit-no-conn
+      Exit on all clients disconnection
+
   -B, --browser
       Open terminal with the default system browser
 
@@ -65,10 +78,10 @@ ttyd 1 "September 2016" ttyd "User Manual"
       Custom index.html path
   
   -b, --base-path
-      Expected base path for requests coming from a reverse proxy (eg: /mounted/here)
+      Expected base path for requests coming from a reverse proxy (eg: /mounted/here, max length: 128)
 
   -P, --ping-interval
-      Websocket ping interval(sec) (default: 300)
+      Websocket ping interval(sec) (default: 5)
 
   -6, --ipv6
       Enable IPv6 support
@@ -94,7 +107,40 @@ ttyd 1 "September 2016" ttyd "User Manual"
   -h, --help
       Print this text and exit
 
-# Examples
+# CLIENT OPTIONS
+ttyd has a mechanism to pass server side command-line arguments to the browser page which is called **client options**:
+
+```bash
+-t, --client-option     Send option to client (format: key=value), repeat to add more options
+```
+
+## Basic usage
+
+- `-t rendererType=canvas`: use the `canvas` renderer for xterm.js (default: `webgl`)
+- `-t disableLeaveAlert=true`: disable the leave page alert
+- `-t disableResizeOverlay=true`: disable the terminal resize overlay
+- `-t disableReconnect=true`: prevent the terminal from reconnecting on connection error/close
+- `-t enableZmodem=true`: enable [ZMODEM](https://en.wikipedia.org/wiki/ZMODEM) / [lrzsz](https://ohse.de/uwe/software/lrzsz.html) file transfer support
+- `-t enableTrzsz=true`: enable [trzsz](https://trzsz.github.io) file transfer support
+- `-t enableSixel=true`: enable [Sixel](https://en.wikipedia.org/wiki/Sixel) image output support ([Usage](https://saitoha.github.io/libsixel/))
+- `-t titleFixed=hello`: set a fixed title for the browser window
+- `-t fontSize=20`: change the font size of the terminal
+
+## Advanced usage
+
+You can use the client option to change all the settings of xterm defined in [ITerminalOptions](https://xtermjs.org/docs/api/terminal/interfaces/iterminaloptions/), examples:
+
+- `-t cursorStyle=bar`: set cursor style to `bar`
+- `-t lineHeight=1.5`: set line-height to `1.5`
+- `-t 'theme={"background": "green"}'`: set background color to `green`
+
+to try the example options above, run:
+
+```bash
+ttyd -t cursorStyle=bar -t lineHeight=1.5 -t 'theme={"background": "green"}' bash
+```
+
+# EXAMPLES
   ttyd starts web server at port 7681 by default, you can use the -p option to change it, the command will be started with arguments as options. For example, run:
   
 ```  

scripts/cross-build.sh

@@ -10,15 +10,15 @@ STAGE_ROOT="${STAGE_ROOT:-/opt/stage}"
 BUILD_ROOT="${BUILD_ROOT:-/opt/build}"
 BUILD_TARGET="${BUILD_TARGET:-x86_64}"
 
-ZLIB_VERSION="${ZLIB_VERSION:-1.2.11}"
-JSON_C_VERSION="${JSON_C_VERSION:-0.15}"
-MBEDTLS_VERSION="${MBEDTLS_VERSION:-2.16.8}"
-LIBUV_VERSION="${LIBUV_VERSION:-1.40.0}"
-LIBWEBSOCKETS_VERSION="${LIBWEBSOCKETS_VERSION:-4.1.6}"
+ZLIB_VERSION="${ZLIB_VERSION:-1.3.1}"
+JSON_C_VERSION="${JSON_C_VERSION:-0.17}"
+MBEDTLS_VERSION="${MBEDTLS_VERSION:-2.28.5}"
+LIBUV_VERSION="${LIBUV_VERSION:-1.44.2}"
+LIBWEBSOCKETS_VERSION="${LIBWEBSOCKETS_VERSION:-4.3.3}"
 
 build_zlib() {
     echo "=== Building zlib-${ZLIB_VERSION} (${TARGET})..."
-    curl -sLo- "https://zlib.net/zlib-${ZLIB_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
+    curl -fSsLo- "https://zlib.net/zlib-${ZLIB_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
     pushd "${BUILD_DIR}"/zlib-"${ZLIB_VERSION}"
         env CHOST="${TARGET}" ./configure --static --archs="-fPIC" --prefix="${STAGE_DIR}"
         make -j"$(nproc)" install
@@ -27,13 +27,15 @@ build_zlib() {
 
 build_json-c() {
     echo "=== Building json-c-${JSON_C_VERSION} (${TARGET})..."
-    curl -sLo- "https://s3.amazonaws.com/json-c_releases/releases/json-c-${JSON_C_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
+    curl -fSsLo- "https://s3.amazonaws.com/json-c_releases/releases/json-c-${JSON_C_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
     pushd "${BUILD_DIR}/json-c-${JSON_C_VERSION}"
         rm -rf build && mkdir -p build && cd build
         cmake -DCMAKE_TOOLCHAIN_FILE="${BUILD_DIR}/cross-${TARGET}.cmake" \
             -DCMAKE_BUILD_TYPE=RELEASE \
             -DCMAKE_INSTALL_PREFIX="${STAGE_DIR}" \
             -DBUILD_SHARED_LIBS=OFF \
+            -DBUILD_TESTING=OFF \
+            -DDISABLE_THREAD_LOCAL_STORAGE=ON \
             ..
         make -j"$(nproc)" install
     popd
@@ -41,7 +43,7 @@ build_json-c() {
 
 build_mbedtls() {
     echo "=== Building mbedtls-${MBEDTLS_VERSION} (${TARGET})..."
-    curl -sLo- "https://github.com/ARMmbed/mbedtls/archive/v${MBEDTLS_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
+    curl -fSsLo- "https://github.com/ARMmbed/mbedtls/archive/v${MBEDTLS_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
     pushd "${BUILD_DIR}/mbedtls-${MBEDTLS_VERSION}"
         rm -rf build && mkdir -p build && cd build
         cmake -DCMAKE_TOOLCHAIN_FILE="${BUILD_DIR}/cross-${TARGET}.cmake" \
@@ -55,7 +57,7 @@ build_mbedtls() {
 
 build_libuv() {
     echo "=== Building libuv-${LIBUV_VERSION} (${TARGET})..."
-    curl -sLo- "https://dist.libuv.org/dist/v${LIBUV_VERSION}/libuv-v${LIBUV_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
+    curl -fSsLo- "https://dist.libuv.org/dist/v${LIBUV_VERSION}/libuv-v${LIBUV_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
     pushd "${BUILD_DIR}/libuv-v${LIBUV_VERSION}"
         ./autogen.sh
         env CFLAGS=-fPIC ./configure --disable-shared --enable-static --prefix="${STAGE_DIR}" --host="${TARGET}"
@@ -65,7 +67,7 @@ build_libuv() {
 
 install_cmake_cross_file() {
     cat << EOF > "${BUILD_DIR}/cross-${TARGET}.cmake"
-set(CMAKE_SYSTEM_NAME Linux)
+SET(CMAKE_SYSTEM_NAME $1)
 
 set(CMAKE_C_COMPILER "${TARGET}-gcc")
 set(CMAKE_CXX_COMPILER "${TARGET}-g++")
@@ -81,9 +83,10 @@ EOF
 
 build_libwebsockets() {
     echo "=== Building libwebsockets-${LIBWEBSOCKETS_VERSION} (${TARGET})..."
-    curl -sLo- "https://github.com/warmcat/libwebsockets/archive/v${LIBWEBSOCKETS_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
+    curl -fSsLo- "https://github.com/warmcat/libwebsockets/archive/v${LIBWEBSOCKETS_VERSION}.tar.gz" | tar xz -C "${BUILD_DIR}"
     pushd "${BUILD_DIR}/libwebsockets-${LIBWEBSOCKETS_VERSION}"
         sed -i 's/ websockets_shared//g' cmake/libwebsockets-config.cmake.in
+        sed -i 's/ OR PC_OPENSSL_FOUND//g' lib/tls/CMakeLists.txt
         sed -i '/PC_OPENSSL/d' lib/tls/CMakeLists.txt
         rm -rf build && mkdir -p build && cd build
         cmake -DCMAKE_TOOLCHAIN_FILE="${BUILD_DIR}/cross-${TARGET}.cmake" \
@@ -99,14 +102,14 @@ build_libwebsockets() {
             -DLWS_UNIX_SOCK=ON \
             -DLWS_IPV6=ON \
             -DLWS_ROLE_RAW_FILE=OFF \
-            -DLWS_WITH_HTTP2=OFF \
+            -DLWS_WITH_HTTP2=ON \
             -DLWS_WITH_HTTP_BASIC_AUTH=OFF \
             -DLWS_WITH_UDP=OFF \
             -DLWS_WITHOUT_CLIENT=ON \
+            -DLWS_WITHOUT_EXTENSIONS=OFF \
             -DLWS_WITH_LEJP=OFF \
             -DLWS_WITH_LEJP_CONF=OFF \
             -DLWS_WITH_LWSAC=OFF \
-            -DLWS_WITH_CUSTOM_HEADERS=OFF \
             -DLWS_WITH_SEQUENCER=OFF \
             ..
         make -j"$(nproc)" install
@@ -131,11 +134,19 @@ build() {
     ALIAS="$2"
     STAGE_DIR="${STAGE_ROOT}/${TARGET}"
     BUILD_DIR="${BUILD_ROOT}/${TARGET}"
+    MUSL_CC_URL="https://github.com/tsl0922/musl-toolchains/releases/download/2021-11-23"
+    COMPONENTS="1"
+    SYSTEM="Linux"
+
+    if [ "$ALIAS" = "win32" ]; then
+        COMPONENTS=2
+        SYSTEM="Windows"
+    fi
 
     echo "=== Installing toolchain ${ALIAS} (${TARGET})..."
 
-    mkdir -p "${CROSS_ROOT}" && export PATH="${PATH}:/opt/cross/bin"
-    curl -sLo- "https://musl.cc/${TARGET}-cross.tgz" | tar xz -C "${CROSS_ROOT}" --strip-components 1
+    mkdir -p "${CROSS_ROOT}" && export PATH="${PATH}:${CROSS_ROOT}/bin"
+    curl -fSsLo- "${MUSL_CC_URL}/${TARGET}-cross.tgz" | tar xz -C "${CROSS_ROOT}" --strip-components=${COMPONENTS}
 
     echo "=== Building target ${ALIAS} (${TARGET})..."
 
@@ -143,7 +154,7 @@ build() {
     mkdir -p "${STAGE_DIR}" "${BUILD_DIR}"
     export PKG_CONFIG_PATH="${STAGE_DIR}/lib/pkgconfig"
 
-    install_cmake_cross_file
+    install_cmake_cross_file ${SYSTEM}
 
     build_zlib
     build_json-c
@@ -154,15 +165,27 @@ build() {
 }
 
 case ${BUILD_TARGET} in
-    i686|x86_64|aarch64|mips|mipsel|mips64|mips64el)
+    amd64) BUILD_TARGET="x86_64" ;;
+    arm64) BUILD_TARGET="aarch64" ;;
+    armv7) BUILD_TARGET="armv7l" ;;
+esac
+
+case ${BUILD_TARGET} in
+    i686|x86_64|aarch64|mips|mipsel|mips64|mips64el|s390x)
         build "${BUILD_TARGET}-linux-musl" "${BUILD_TARGET}"
         ;;
     arm)
-        build arm-linux-musleabi "${BUILD_TARGET}"
+        build "${BUILD_TARGET}-linux-musleabi" "${BUILD_TARGET}"
         ;;
     armhf)
         build arm-linux-musleabihf "${BUILD_TARGET}"
         ;;
+    armv7l)
+        build armv7l-linux-musleabihf "${BUILD_TARGET}"
+        ;;
+    win32)
+        build x86_64-w64-mingw32 "${BUILD_TARGET}"
+        ;;
     *)
         echo "unknown cross target: ${BUILD_TARGET}" && exit 1
 esac

scripts/mingw-build.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -eo pipefail
+
+build_libwebsockets() {
+  svn co https://github.com/msys2/MINGW-packages/trunk/mingw-w64-libwebsockets
+  sed -i 's/openssl/mbedtls/' mingw-w64-libwebsockets/PKGBUILD
+  sed -i '/-DCMAKE_INSTALL_PREFIX=${MINGW_PREFIX}/a \    -DLWS_WITH_MBEDTLS=ON \\' mingw-w64-libwebsockets/PKGBUILD
+  sed -i '/-DCMAKE_INSTALL_PREFIX=${MINGW_PREFIX}/a \    -DLWS_WITH_LIBUV=ON \\' mingw-w64-libwebsockets/PKGBUILD
+  pushd mingw-w64-libwebsockets
+    makepkg-mingw --cleanbuild --syncdeps --force --noconfirm
+    pacman -U *.pkg.tar.zst --noconfirm
+  popd
+}
+
+build_libwebsockets
+
+# workaround for the lib name change
+cp ${MINGW_PREFIX}/lib/libuv_a.a ${MINGW_PREFIX}/lib/libuv.a
+
+rm -rf build && mkdir -p build && cd build
+cmake -DCMAKE_BUILD_TYPE=RELEASE \
+    -DCMAKE_FIND_LIBRARY_SUFFIXES=".a" \
+    -DCMAKE_C_FLAGS="-Os -ffunction-sections -fdata-sections -fno-unwind-tables -fno-asynchronous-unwind-tables -flto" \
+    -DCMAKE_EXE_LINKER_FLAGS="-static -no-pie -Wl,-s -Wl,-Bsymbolic -Wl,--gc-sections" \
+    ..
+cmake --build .

snap/snapcraft.yaml

@@ -0,0 +1,49 @@
+name: ttyd
+adopt-info: ttyd
+summary: Share your terminal over the web
+description: |
+ ttyd is a simple command-line tool for sharing terminal over the web
+
+grade: stable
+confinement: classic
+base: core20
+compression: lzo
+
+license: MIT
+
+assumes:
+  - command-chain
+
+apps:
+  ttyd:
+    command: usr/bin/ttyd
+    command-chain: 
+      - bin/homeishome-launch       
+
+parts:
+  ttyd:
+    source: https://github.com/tsl0922/ttyd
+    source-type: git
+    plugin: cmake
+    cmake-parameters:
+      - -DCMAKE_INSTALL_PREFIX=/usr
+    build-environment:
+      - LDFLAGS: "-pthread"
+      
+    override-pull: |
+      snapcraftctl pull
+      snapcraftctl set-version "$(git describe --tags | sed 's/^v//' | cut -d "-" -f1)"
+      
+    build-packages:
+      - build-essential 
+      - libjson-c-dev 
+      - libwebsockets-dev
+      
+    stage-packages:
+      - libjson-c4
+      - libwebsockets15
+      
+  homeishome-launch:
+    plugin: nil
+    stage-snaps:
+      - homeishome-launch  

src/http.c

@@ -6,61 +6,45 @@
 #include "server.h"
 #include "utils.h"
 
-#if LWS_LIBRARY_VERSION_MAJOR < 2
-#define HTTP_STATUS_FOUND 302
-#endif
-
 enum { AUTH_OK, AUTH_FAIL, AUTH_ERROR };
 
 static char *html_cache = NULL;
 static size_t html_cache_len = 0;
 
-static int check_auth(struct lws *wsi, struct pss_http *pss) {
-  if (server->credential == NULL) return AUTH_OK;
-
-  int hdr_length = lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_AUTHORIZATION);
-  char buf[hdr_length + 1];
-  int len = lws_hdr_copy(wsi, buf, sizeof(buf), WSI_TOKEN_HTTP_AUTHORIZATION);
-  if (len > 0) {
-    // extract base64 text from authorization header
-    char *ptr = &buf[0];
-    char *token, *b64_text = NULL;
-    int i = 1;
-    while ((token = strsep(&ptr, " ")) != NULL) {
-      if (strlen(token) == 0) continue;
-      if (i++ == 2) {
-        b64_text = token;
-        break;
-      }
-    }
-    if (b64_text != NULL && !strcmp(b64_text, server->credential)) return AUTH_OK;
-  }
-
+static int send_unauthorized(struct lws *wsi, unsigned int code, enum lws_token_indexes header) {
   unsigned char buffer[1024 + LWS_PRE], *p, *end;
   p = buffer + LWS_PRE;
   end = p + sizeof(buffer) - LWS_PRE;
 
-  char *body = strdup("401 Unauthorized\n");
-  size_t n = strlen(body);
-
-  if (lws_add_http_header_status(wsi, HTTP_STATUS_UNAUTHORIZED, &p, end) ||
-      lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_WWW_AUTHENTICATE,
-                                   (unsigned char *)"Basic realm=\"ttyd\"", 18, &p, end) ||
-      lws_add_http_header_content_length(wsi, n, &p, end) ||
-      lws_finalize_http_header(wsi, &p, end) ||
+  if (lws_add_http_header_status(wsi, code, &p, end) ||
+      lws_add_http_header_by_token(wsi, header, (unsigned char *)"Basic realm=\"ttyd\"", 18, &p, end) ||
+      lws_add_http_header_content_length(wsi, 0, &p, end) || lws_finalize_http_header(wsi, &p, end) ||
       lws_write(wsi, buffer + LWS_PRE, p - (buffer + LWS_PRE), LWS_WRITE_HTTP_HEADERS) < 0)
-    return AUTH_ERROR;
-
-  pss->buffer = pss->ptr = body;
-  pss->len = n;
-  lws_callback_on_writable(wsi);
-
     return AUTH_FAIL;
+
+  return lws_http_transaction_completed(wsi) ? AUTH_FAIL : AUTH_ERROR;
+}
+
+static int check_auth(struct lws *wsi, struct pss_http *pss) {
+  if (server->auth_header != NULL) {
+    if (lws_hdr_custom_length(wsi, server->auth_header, strlen(server->auth_header)) > 0) return AUTH_OK;
+    return send_unauthorized(wsi, HTTP_STATUS_PROXY_AUTH_REQUIRED, WSI_TOKEN_HTTP_PROXY_AUTHENTICATE);
+  }
+
+  if(server->credential != NULL) {
+    char buf[256];
+    int len = lws_hdr_copy(wsi, buf, sizeof(buf), WSI_TOKEN_HTTP_AUTHORIZATION);
+    if (len >= 7 && strstr(buf, "Basic ")) {
+      if (!strcmp(buf + 6, server->credential)) return AUTH_OK;
+    }
+    return send_unauthorized(wsi, HTTP_STATUS_UNAUTHORIZED, WSI_TOKEN_HTTP_WWW_AUTHENTICATE);
+  }
+
+  return AUTH_OK;
 }
 
 static bool accept_gzip(struct lws *wsi) {
-  int hdr_length = lws_hdr_total_length(wsi, WSI_TOKEN_HTTP_ACCEPT_ENCODING);
-  char buf[hdr_length + 1];
+  char buf[256];
   int len = lws_hdr_copy(wsi, buf, sizeof(buf), WSI_TOKEN_HTTP_ACCEPT_ENCODING);
   return len > 0 && strstr(buf, "gzip") != NULL;
 }
@@ -102,17 +86,11 @@ static void pss_buffer_free(struct pss_http *pss) {
 static void access_log(struct lws *wsi, const char *path) {
   char rip[50];
 
-#if LWS_LIBRARY_VERSION_NUMBER >= 2004000
   lws_get_peer_simple(lws_get_network_wsi(wsi), rip, sizeof(rip));
-#else
-  char name[100];
-  lws_get_peer_addresses(wsi, lws_get_socket_fd(wsi), name, sizeof(name), rip, sizeof(rip));
-#endif
   lwsl_notice("HTTP %s - %s\n", path, rip);
 }
 
-int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in,
-                  size_t len) {
+int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len) {
   struct pss_http *pss = (struct pss_http *)user;
   unsigned char buffer[4096 + LWS_PRE], *p, *end;
   char buf[256];
@@ -140,8 +118,7 @@ int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user,
         size_t n = sprintf(buf, "{\"token\": \"%s\"}", credential);
         if (lws_add_http_header_status(wsi, HTTP_STATUS_OK, &p, end) ||
             lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE,
-                                         (unsigned char *)"application/json;charset=utf-8", 30, &p,
-                                         end) ||
+                                         (unsigned char *)"application/json;charset=utf-8", 30, &p, end) ||
             lws_add_http_header_content_length(wsi, (unsigned long)n, &p, end) ||
             lws_finalize_http_header(wsi, &p, end) ||
             lws_write(wsi, buffer + LWS_PRE, p - (buffer + LWS_PRE), LWS_WRITE_HTTP_HEADERS) < 0)
@@ -156,11 +133,9 @@ int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user,
       // redirects `/base-path` to `/base-path/`
       if (strcmp(pss->path, endpoints.parent) == 0) {
         if (lws_add_http_header_status(wsi, HTTP_STATUS_FOUND, &p, end) ||
-            lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_LOCATION,
-                                         (unsigned char *)endpoints.index,
+            lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_LOCATION, (unsigned char *)endpoints.index,
                                          (int)strlen(endpoints.index), &p, end) ||
-            lws_add_http_header_content_length(wsi, 0, &p, end) ||
-            lws_finalize_http_header(wsi, &p, end) ||
+            lws_add_http_header_content_length(wsi, 0, &p, end) || lws_finalize_http_header(wsi, &p, end) ||
             lws_write(wsi, buffer + LWS_PRE, p - (buffer + LWS_PRE), LWS_WRITE_HTTP_HEADERS) < 0)
           return 1;
         goto try_to_reuse;
@@ -179,15 +154,14 @@ int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user,
         char *output = (char *)index_html;
         size_t output_len = index_html_len;
         if (lws_add_http_header_status(wsi, HTTP_STATUS_OK, &p, end) ||
-            lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE,
-                                         (const unsigned char *)content_type, 9, &p, end))
+            lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_TYPE, (const unsigned char *)content_type, 9, &p,
+                                         end))
           return 1;
 #ifdef LWS_WITH_HTTP_STREAM_COMPRESSION
         if (!uncompress_html(&output, &output_len)) return 1;
 #else
         if (accept_gzip(wsi)) {
-          if (lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_ENCODING,
-                                           (unsigned char *)"gzip", 4, &p, end))
+          if (lws_add_http_header_by_token(wsi, WSI_TOKEN_HTTP_CONTENT_ENCODING, (unsigned char *)"gzip", 4, &p, end))
             return 1;
         } else {
           if (!uncompress_html(&output, &output_len)) return 1;
@@ -199,14 +173,9 @@ int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user,
             lws_write(wsi, buffer + LWS_PRE, p - (buffer + LWS_PRE), LWS_WRITE_HTTP_HEADERS) < 0)
           return 1;
 
-#if LWS_LIBRARY_VERSION_MAJOR < 2
-        if (lws_write_http(wsi, output, output_len) < 0) return 1;
-        goto try_to_reuse;
-#else
         pss->buffer = pss->ptr = output;
         pss->len = output_len;
         lws_callback_on_writable(wsi);
-#endif
       }
       break;
 

src/protocol.c

@@ -1,15 +1,13 @@
 #include <errno.h>
 #include <json.h>
 #include <libwebsockets.h>
-#include <signal.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/wait.h>
 
+#include "pty.h"
 #include "server.h"
-#include "terminal.h"
 #include "utils.h"
 
 // initial message list
@@ -37,37 +35,23 @@ static int send_initial_message(struct lws *wsi, int index) {
   return lws_write(wsi, p, (size_t)n, LWS_WRITE_BINARY);
 }
 
-static bool parse_window_size(struct pss_tty *pss, int *cols, int *rows) {
-  char json[pss->len];
-  strncpy(json, pss->buffer + 1, pss->len - 1);
-  json[pss->len - 1] = '\0';
-
-  json_object *obj = json_tokener_parse(json);
+static json_object *parse_window_size(const char *buf, size_t len, uint16_t *cols, uint16_t *rows) {
+  json_tokener *tok = json_tokener_new();
+  json_object *obj = json_tokener_parse_ex(tok, buf, len);
   struct json_object *o = NULL;
 
-  if (!json_object_object_get_ex(obj, "columns", &o)) {
-    lwsl_err("columns field not exists, json: %s\n", json);
-    return false;
-  }
-  *cols = json_object_get_int(o);
-  if (!json_object_object_get_ex(obj, "rows", &o)) {
-    lwsl_err("rows field not exists, json: %s\n", json);
-    return false;
-  }
-  *rows = json_object_get_int(o);
-  json_object_put(obj);
+  if (json_object_object_get_ex(obj, "columns", &o)) *cols = (uint16_t)json_object_get_int(o);
+  if (json_object_object_get_ex(obj, "rows", &o)) *rows = (uint16_t)json_object_get_int(o);
 
-  return true;
+  json_tokener_free(tok);
+  return obj;
 }
 
 static bool check_host_origin(struct lws *wsi) {
-  int origin_length = lws_hdr_total_length(wsi, WSI_TOKEN_ORIGIN);
-  char buf[origin_length + 1];
+  char buf[256];
   memset(buf, 0, sizeof(buf));
-  int len = lws_hdr_copy(wsi, buf, sizeof(buf), WSI_TOKEN_ORIGIN);
-  if (len <= 0) {
-    return false;
-  }
+  int len = lws_hdr_copy(wsi, buf, (int)sizeof(buf), WSI_TOKEN_ORIGIN);
+  if (len <= 0) return false;
 
   const char *prot, *address, *path;
   int port;
@@ -78,154 +62,140 @@ static bool check_host_origin(struct lws *wsi) {
     sprintf(buf, "%s:%d", address, port);
   }
 
-  int host_length = lws_hdr_total_length(wsi, WSI_TOKEN_HOST);
-  if (host_length != strlen(buf)) return false;
-  char host_buf[host_length + 1];
+  char host_buf[256];
   memset(host_buf, 0, sizeof(host_buf));
-  len = lws_hdr_copy(wsi, host_buf, sizeof(host_buf), WSI_TOKEN_HOST);
+  len = lws_hdr_copy(wsi, host_buf, (int)sizeof(host_buf), WSI_TOKEN_HOST);
 
   return len > 0 && strcasecmp(buf, host_buf) == 0;
 }
 
-static void close_cb(uv_handle_t *handle) {
-  struct pty_proc *proc = container_of((uv_pipe_t *)handle, struct pty_proc, pipe);
-  free(proc);
+static pty_ctx_t *pty_ctx_init(struct pss_tty *pss) {
+  pty_ctx_t *ctx = xmalloc(sizeof(pty_ctx_t));
+  ctx->pss = pss;
+  ctx->ws_closed = false;
+  return ctx;
 }
 
-static void pty_proc_free(struct pty_proc *proc) {
-  uv_read_stop((uv_stream_t *)&proc->pipe);
-  close(proc->pty);
-  if (proc->pty_buffer != NULL) {
-    free(proc->pty_buffer);
-    proc->pty_buffer = NULL;
+static void pty_ctx_free(pty_ctx_t *ctx) { free(ctx); }
+
+static void process_read_cb(pty_process *process, pty_buf_t *buf, bool eof) {
+  pty_ctx_t *ctx = (pty_ctx_t *)process->ctx;
+  if (ctx->ws_closed) {
+    pty_buf_free(buf);
+    return;
   }
-  for (int i = 0; i < proc->argc; i++) {
-    free(proc->args[i]);
-  }
-  uv_close((uv_handle_t *)&proc->pipe, close_cb);
+
+  if (eof && !process_running(process))
+    ctx->pss->lws_close_status = process->exit_code == 0 ? 1000 : 1006;
+  else
+    ctx->pss->pty_buf = buf;
+  lws_callback_on_writable(ctx->pss->wsi);
 }
 
-static void alloc_cb(uv_handle_t *handle, size_t suggested_size, uv_buf_t *buf) {
-  buf->base = xmalloc(suggested_size);
-  buf->len = suggested_size;
+static void process_exit_cb(pty_process *process) {
+  pty_ctx_t *ctx = (pty_ctx_t *)process->ctx;
+  if (ctx->ws_closed) {
+    lwsl_notice("process killed with signal %d, pid: %d\n", process->exit_signal, process->pid);
+    goto done;
+  }
+
+  lwsl_notice("process exited with code %d, pid: %d\n", process->exit_code, process->pid);
+  ctx->pss->process = NULL;
+  ctx->pss->lws_close_status = process->exit_code == 0 ? 1000 : 1006;
+  lws_callback_on_writable(ctx->pss->wsi);
+
+done:
+  pty_ctx_free(ctx);
 }
 
-static void read_cb(uv_stream_t *stream, ssize_t nread, const uv_buf_t *buf) {
-  struct pss_tty *pss = (struct pss_tty *)stream->data;
-  struct pty_proc *proc = pss->proc;
-  proc->pty_len = nread;
-
-  uv_read_stop(stream);
-
-  if (nread == UV_ENOBUFS || nread == 0) return;
-  if (nread > 0) {
-    proc->pty_buffer = xmalloc(LWS_PRE + 1 + (size_t)nread);
-    memcpy(proc->pty_buffer + LWS_PRE + 1, buf->base, (size_t)nread);
-  } else {
-    proc->pty_buffer = NULL;
-    if (nread != UV_EOF) {
-      proc->err_count++;
-      lwsl_err("read_cb: %s (%s)\n", uv_err_name(nread), uv_strerror(nread));
-    }
-  }
-  free(buf->base);
-
-  lws_callback_on_writable(pss->wsi);
-}
-
-static void child_cb(uv_signal_t *handle, int signum) {
-  pid_t pid;
-  int stat;
-
-  struct pty_proc *proc;
-  LIST_HEAD(proc, pty_proc) *procs = handle->data;
-  LIST_FOREACH(proc, procs, entry) {
-    do
-      pid = waitpid(proc->pid, &stat, WNOHANG);
-    while (pid == -1 && errno == EINTR);
-
-    if (pid <= 0) continue;
-
-    if (WIFEXITED(stat)) {
-      proc->status = WEXITSTATUS(stat);
-      lwsl_notice("process exited with code %d, pid: %d\n", proc->status, proc->pid);
-    } else if (WIFSIGNALED(stat)) {
-      int sig = WTERMSIG(stat);
-      char sig_name[20];
-
-      proc->status = 128 + sig;
-      get_sig_name(sig, sig_name, sizeof(sig_name));
-      lwsl_notice("process killed with signal %d (%s), pid: %d\n", sig, sig_name, proc->pid);
-    }
-
-    LIST_REMOVE(proc, entry);
-    if (proc->state == STATE_KILL) {
-      pty_proc_free(proc);
-    } else {
-      proc->state = STATE_EXIT;
-    }
-  }
-}
-
-static int spawn_process(struct pss_tty *pss) {
-  struct pty_proc *proc = pss->proc;
-  // append url args to arguments
-  char *argv[server->argc + proc->argc + 1];
+static char **build_args(struct pss_tty *pss) {
   int i, n = 0;
+  char **argv = xmalloc((server->argc + pss->argc + 1) * sizeof(char *));
+
   for (i = 0; i < server->argc; i++) {
     argv[n++] = server->argv[i];
   }
-  for (i = 0; i < proc->argc; i++) {
-    argv[n++] = proc->args[i];
+
+  for (i = 0; i < pss->argc; i++) {
+    argv[n++] = pss->args[i];
   }
+
   argv[n] = NULL;
 
-  uv_signal_start(&server->watcher, child_cb, SIGCHLD);
+  return argv;
+}
 
-  // ensure the lws socket fd close-on-exec
-  fd_set_cloexec(lws_get_socket_fd(pss->wsi));
+static char **build_env(struct pss_tty *pss) {
+  int i = 0, n = 2;
+  char **envp = xmalloc(n * sizeof(char *));
 
-  // create process with pseudo-tty
-  proc->pid = pty_fork(&proc->pty, argv[0], argv, server->terminal_type);
-  if (proc->pid < 0) {
-    lwsl_err("pty_fork: %d (%s)\n", errno, strerror(errno));
-    return 1;
+  // TERM
+  envp[i] = xmalloc(36);
+  snprintf(envp[i], 36, "TERM=%s", server->terminal_type);
+  i++;
+
+  // TTYD_USER
+  if (strlen(pss->user) > 0) {
+    envp = xrealloc(envp, (++n) * sizeof(char *));
+    envp[i] = xmalloc(40);
+    snprintf(envp[i], 40, "TTYD_USER=%s", pss->user);
+    i++;
   }
 
-  lwsl_notice("started process, pid: %d\n", proc->pid);
+  envp[i] = NULL;
 
-  proc->pipe.data = pss;
-  uv_pipe_open(&proc->pipe, proc->pty);
+  return envp;
+}
 
+static bool spawn_process(struct pss_tty *pss, uint16_t columns, uint16_t rows) {
+  pty_process *process = process_init((void *)pty_ctx_init(pss), server->loop, build_args(pss), build_env(pss));
+  if (server->cwd != NULL) process->cwd = strdup(server->cwd);
+  if (columns > 0) process->columns = columns;
+  if (rows > 0) process->rows = rows;
+  if (pty_spawn(process, process_read_cb, process_exit_cb) != 0) {
+    lwsl_err("pty_spawn: %d (%s)\n", errno, strerror(errno));
+    process_free(process);
+    return false;
+  }
+  lwsl_notice("started process, pid: %d\n", process->pid);
+  pss->process = process;
   lws_callback_on_writable(pss->wsi);
 
-  return 0;
+  return true;
 }
 
-static void kill_process(struct pty_proc *proc) {
-  if (proc->pid <= 0) return;
+static void wsi_output(struct lws *wsi, pty_buf_t *buf) {
+  if (buf == NULL) return;
+  char *message = xmalloc(LWS_PRE + 1 + buf->len);
+  char *ptr = message + LWS_PRE;
 
-  pid_t pid = proc->pid;
-  int sig = server->sig_code;
-  char *sig_name = server->sig_name;
+  *ptr = OUTPUT;
+  memcpy(ptr + 1, buf->base, buf->len);
+  size_t n = buf->len + 1;
 
-  lwsl_notice("killing process %d with signal: %d (%s)\n", pid, sig, sig_name);
-  int pgid = getpgid(pid);
-  if (uv_kill(pgid > 0 ? -pgid : pid, sig) != 0) {
-    lwsl_err("kill: %d, errno: %d (%s)\n", pid, errno, strerror(errno));
+  if (lws_write(wsi, (unsigned char *)ptr, n, LWS_WRITE_BINARY) < n) {
+    lwsl_err("write OUTPUT to WS\n");
   }
+
+  free(message);
 }
 
-static void write_cb(uv_write_t *req, int status) {
-  if (status != 0) lwsl_warn("uv_write callback returned status: %d\n", status);
-  free(req->data);
-  free(req);
+static bool check_auth(struct lws *wsi, struct pss_tty *pss) {
+  if (server->auth_header != NULL) {
+    return lws_hdr_custom_copy(wsi, pss->user, sizeof(pss->user), server->auth_header, strlen(server->auth_header)) > 0;
+  }
+
+  if (server->credential != NULL) {
+    char buf[256];
+    size_t n = lws_hdr_copy(wsi, buf, sizeof(buf), WSI_TOKEN_HTTP_AUTHORIZATION);
+    return n >= 7 && strstr(buf, "Basic ") && !strcmp(buf + 6, server->credential);
+  }
+
+  return true;
 }
 
-int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in,
-                 size_t len) {
+int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len) {
   struct pss_tty *pss = (struct pss_tty *)user;
-  struct pty_proc *proc;
   char buf[256];
   size_t n = 0;
 
@@ -239,13 +209,14 @@ int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user,
         lwsl_warn("refuse to serve WS client due to the --max-clients option.\n");
         return 1;
       }
+      if (!check_auth(wsi, pss)) return 1;
 
       n = lws_hdr_copy(wsi, pss->path, sizeof(pss->path), WSI_TOKEN_GET_URI);
 #if defined(LWS_ROLE_H2)
       if (n <= 0) n = lws_hdr_copy(wsi, pss->path, sizeof(pss->path), WSI_TOKEN_HTTP_COLON_PATH);
 #endif
       if (strncmp(pss->path, endpoints.ws, n) != 0) {
-        lwsl_warn("refuse to serve WS client for illegal ws path: %s\n", buf);
+        lwsl_warn("refuse to serve WS client for illegal ws path: %s\n", pss->path);
         return 1;
       }
 
@@ -259,46 +230,31 @@ int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user,
 
     case LWS_CALLBACK_ESTABLISHED:
       pss->initialized = false;
-      pss->initial_cmd_index = 0;
       pss->authenticated = false;
       pss->wsi = wsi;
-      pss->buffer = NULL;
-
-      pss->proc = proc = xmalloc(sizeof(struct pty_proc));
-      memset(proc, 0, sizeof(struct pty_proc));
-      proc->status = -1;
-      proc->state = STATE_INIT;
-      uv_pipe_init(server->loop, &proc->pipe, 0);
+      pss->lws_close_status = LWS_CLOSE_STATUS_NOSTATUS;
 
       if (server->url_arg) {
         while (lws_hdr_copy_fragment(wsi, buf, sizeof(buf), WSI_TOKEN_HTTP_URI_ARGS, n++) > 0) {
           if (strncmp(buf, "arg=", 4) == 0) {
-            proc->args = xrealloc(proc->args, (proc->argc + 1) * sizeof(char *));
-            proc->args[proc->argc] = strdup(&buf[4]);
-            proc->argc++;
+            pss->args = xrealloc(pss->args, (pss->argc + 1) * sizeof(char *));
+            pss->args[pss->argc] = strdup(&buf[4]);
+            pss->argc++;
           }
         }
       }
 
-      LIST_INSERT_HEAD(&server->procs, proc, entry);
       server->client_count++;
 
-#if LWS_LIBRARY_VERSION_NUMBER >= 2004000
       lws_get_peer_simple(lws_get_network_wsi(wsi), pss->address, sizeof(pss->address));
-#else
-      char name[100];
-      lws_get_peer_addresses(wsi, lws_get_socket_fd(wsi), name, sizeof(name), pss->address,
-                             sizeof(pss->address));
-#endif
       lwsl_notice("WS   %s - %s, clients: %d\n", pss->path, pss->address, server->client_count);
       break;
 
     case LWS_CALLBACK_SERVER_WRITEABLE:
-      proc = pss->proc;
       if (!pss->initialized) {
         if (pss->initial_cmd_index == sizeof(initial_cmds)) {
           pss->initialized = true;
-          uv_read_start((uv_stream_t *)&proc->pipe, alloc_cb, read_cb);
+          pty_resume(pss->process);
           break;
         }
         if (send_initial_message(wsi, pss->initial_cmd_index) < 0) {
@@ -311,26 +267,17 @@ int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user,
         break;
       }
 
-      // read error or client exited, close connection
-      if (proc->status == 0 || proc->pty_len == UV_EOF) {
-        lws_close_reason(wsi, LWS_CLOSE_STATUS_NORMAL, NULL, 0);
+      if (pss->lws_close_status > LWS_CLOSE_STATUS_NOSTATUS) {
+        lws_close_reason(wsi, pss->lws_close_status, NULL, 0);
         return 1;
-      } else if (proc->status > 0 || (proc->pty_len < 0 && proc->err_count == MAX_READ_RETRY)) {
-        lws_close_reason(wsi, LWS_CLOSE_STATUS_UNEXPECTED_CONDITION, NULL, 0);
-        return -1;
       }
 
-      if (proc->pty_buffer != NULL && proc->pty_len > 0) {
-        proc->pty_buffer[LWS_PRE] = OUTPUT;
-        n = (size_t)(proc->pty_len + 1);
-        if (lws_write(wsi, (unsigned char *)proc->pty_buffer + LWS_PRE, n, LWS_WRITE_BINARY) < n) {
-          lwsl_err("write OUTPUT to WS\n");
+      if (pss->pty_buf != NULL) {
+        wsi_output(wsi, pss->pty_buf);
+        pty_buf_free(pss->pty_buf);
+        pss->pty_buf = NULL;
+        pty_resume(pss->process);
       }
-        free(proc->pty_buffer);
-        proc->pty_buffer = NULL;
-      }
-
-      uv_read_start((uv_stream_t *)&proc->pipe, alloc_cb, read_cb);
       break;
 
     case LWS_CALLBACK_RECEIVE:
@@ -357,49 +304,33 @@ int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user,
         return 0;
       }
 
-      proc = pss->proc;
       switch (command) {
         case INPUT:
-          if (proc->pty == 0) break;
-          if (server->readonly) break;
-
-          char *data = xmalloc(pss->len - 1);
-          memcpy(data, pss->buffer + 1, pss->len - 1);
-
-          uv_buf_t b = {data, pss->len - 1};
-          uv_write_t *req = xmalloc(sizeof(uv_write_t));
-          req->data = data;
-
-          int err = uv_write(req, (uv_stream_t *)&proc->pipe, &b, 1, write_cb);
+          if (!server->writable) break;
+          int err = pty_write(pss->process, pty_buf_init(pss->buffer + 1, pss->len - 1));
           if (err) {
             lwsl_err("uv_write: %s (%s)\n", uv_err_name(err), uv_strerror(err));
             return -1;
           }
           break;
-        case RESIZE_TERMINAL: {
-          int cols, rows;
-          if (parse_window_size(pss, &cols, &rows)) {
-            if (pty_resize(proc->pty, cols, rows) < 0) {
-              lwsl_err("pty_resize: %d (%s)\n", errno, strerror(errno));
-            }
-          }
-        } break;
+        case RESIZE_TERMINAL:
+          if (pss->process == NULL) break;
+          json_object_put(
+              parse_window_size(pss->buffer + 1, pss->len - 1, &pss->process->columns, &pss->process->rows));
+          pty_resize(pss->process);
+          break;
         case PAUSE:
-          if (proc->state == STATE_INIT) {
-            uv_read_stop((uv_stream_t *)&proc->pipe);
-            proc->state = STATE_PAUSE;
-          }
+          pty_pause(pss->process);
           break;
         case RESUME:
-          if (proc->state == STATE_PAUSE) {
-            uv_read_start((uv_stream_t *)&proc->pipe, alloc_cb, read_cb);
-            proc->state = STATE_INIT;
-          }
+          pty_resume(pss->process);
           break;
         case JSON_DATA:
-          if (proc->pid > 0) break;
+          if (pss->process != NULL) break;
+          uint16_t columns = 0;
+          uint16_t rows = 0;
+          json_object *obj = parse_window_size(pss->buffer, pss->len, &columns, &rows);
           if (server->credential != NULL) {
-            json_object *obj = json_tokener_parse(pss->buffer);
             struct json_object *o = NULL;
             if (json_object_object_get_ex(obj, "AuthToken", &o)) {
               const char *token = json_object_get_string(o);
@@ -409,11 +340,13 @@ int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user,
                 lwsl_warn("WS authentication failed with token: %s\n", token);
             }
             if (!pss->authenticated) {
+              json_object_put(obj);
               lws_close_reason(wsi, LWS_CLOSE_STATUS_POLICY_VIOLATION, NULL, 0);
               return -1;
             }
           }
-          if (spawn_process(pss) != 0) return 1;
+          json_object_put(obj);
+          if (!spawn_process(pss, columns, rows)) return 1;
           break;
         default:
           lwsl_warn("ignored unknown message type: %c\n", command);
@@ -431,21 +364,23 @@ int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user,
 
       server->client_count--;
       lwsl_notice("WS closed from %s, clients: %d\n", pss->address, server->client_count);
-      if (pss->buffer != NULL) {
-        free(pss->buffer);
+      if (pss->buffer != NULL) free(pss->buffer);
+      if (pss->pty_buf != NULL) pty_buf_free(pss->pty_buf);
+      for (int i = 0; i < pss->argc; i++) {
+        free(pss->args[i]);
       }
 
-      proc = pss->proc;
-      if (proc->state == STATE_EXIT) {
-        pty_proc_free(proc);
-      } else {
-        proc->state = STATE_KILL;
-        uv_read_stop((uv_stream_t *)&proc->pipe);
-        kill_process(proc);
+      if (pss->process != NULL) {
+        ((pty_ctx_t *)pss->process->ctx)->ws_closed = true;
+        if (process_running(pss->process)) {
+          pty_pause(pss->process);
+          lwsl_notice("killing process, pid: %d\n", pss->process->pid);
+          pty_kill(pss->process, server->sig_code);
+        }
       }
 
-      if (server->once && server->client_count == 0) {
-        lwsl_notice("exiting due to the --once option.\n");
+      if ((server->once || server->exit_no_conn) && server->client_count == 0) {
+        lwsl_notice("exiting due to the --once/--exit-no-conn option.\n");
         force_exit = true;
         lws_cancel_service(context);
         exit(0);

src/pty.c

@@ -0,0 +1,485 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#ifndef _WIN32
+#include <sys/ioctl.h>
+#include <sys/wait.h>
+
+#if defined(__OpenBSD__) || defined(__APPLE__)
+#include <util.h>
+#elif defined(__FreeBSD__)
+#include <libutil.h>
+#else
+#include <pty.h>
+#endif
+
+#if defined(__APPLE__)
+#include <crt_externs.h>
+#define environ (*_NSGetEnviron())
+#else
+extern char **environ;
+#endif
+#endif
+
+#include "pty.h"
+#include "utils.h"
+
+#ifdef _WIN32
+HRESULT (WINAPI *pCreatePseudoConsole)(COORD, HANDLE, HANDLE, DWORD, HPCON *);
+HRESULT (WINAPI *pResizePseudoConsole)(HPCON, COORD);
+void (WINAPI *pClosePseudoConsole)(HPCON);
+#endif
+
+static void alloc_cb(uv_handle_t *unused, size_t suggested_size, uv_buf_t *buf) {
+  buf->base = xmalloc(suggested_size);
+  buf->len = suggested_size;
+}
+
+static void close_cb(uv_handle_t *handle) { free(handle); }
+
+static void async_free_cb(uv_handle_t *handle) {
+  free((uv_async_t *) handle -> data);
+}
+
+pty_buf_t *pty_buf_init(char *base, size_t len) {
+  pty_buf_t *buf = xmalloc(sizeof(pty_buf_t));
+  buf->base = xmalloc(len);
+  memcpy(buf->base, base, len);
+  buf->len = len;
+  return buf;
+}
+
+void pty_buf_free(pty_buf_t *buf) {
+  if (buf == NULL) return;
+  if (buf->base != NULL) free(buf->base);
+  free(buf);
+}
+
+static void read_cb(uv_stream_t *stream, ssize_t n, const uv_buf_t *buf) {
+  uv_read_stop(stream);
+  pty_process *process = (pty_process *) stream->data;
+  if (n <= 0) {
+    if (n == UV_ENOBUFS || n == 0) return;
+    process->read_cb(process, NULL, true);
+    goto done;
+  }
+  process->read_cb(process, pty_buf_init(buf->base, (size_t) n), false);
+
+done:
+  free(buf->base);
+}
+
+static void write_cb(uv_write_t *req, int unused) {
+  pty_buf_t *buf = (pty_buf_t *) req->data;
+  pty_buf_free(buf);
+  free(req);
+}
+
+pty_process *process_init(void *ctx, uv_loop_t *loop, char *argv[], char *envp[]) {
+  pty_process *process = xmalloc(sizeof(pty_process));
+  memset(process, 0, sizeof(pty_process));
+  process->ctx = ctx;
+  process->loop = loop;
+  process->argv = argv;
+  process->envp = envp;
+  process->columns = 80;
+  process->rows = 24;
+  process->exit_code = -1;
+  return process;
+}
+
+bool process_running(pty_process *process) {
+  return process != NULL && process->pid > 0 && uv_kill(process->pid, 0) == 0;
+}
+
+void process_free(pty_process *process) {
+  if (process == NULL) return;
+#ifdef _WIN32
+  if (process->si.lpAttributeList != NULL) {
+    DeleteProcThreadAttributeList(process->si.lpAttributeList);
+    free(process->si.lpAttributeList);
+  }
+  if (process->pty != NULL) pClosePseudoConsole(process->pty);
+  if (process->handle != NULL) CloseHandle(process->handle);
+#else
+  close(process->pty);
+  uv_thread_join(&process->tid);
+#endif
+  if (process->in != NULL) uv_close((uv_handle_t *) process->in, close_cb);
+  if (process->out != NULL) uv_close((uv_handle_t *) process->out, close_cb);
+  if (process->argv != NULL) free(process->argv);
+  if (process->cwd != NULL) free(process->cwd);
+  char **p = process->envp;
+  for (; *p; p++) free(*p);
+  free(process->envp);
+}
+
+void pty_pause(pty_process *process) {
+  if (process == NULL) return;
+  if (process->paused) return;
+  uv_read_stop((uv_stream_t *) process->out);
+}
+
+void pty_resume(pty_process *process) {
+  if (process == NULL) return;
+  if (!process->paused) return;
+  process->out->data = process;
+  uv_read_start((uv_stream_t *) process->out, alloc_cb, read_cb);
+}
+
+int pty_write(pty_process *process, pty_buf_t *buf) {
+  if (process == NULL) {
+    pty_buf_free(buf);
+    return UV_ESRCH;
+  }
+  uv_buf_t b = uv_buf_init(buf->base, buf->len);
+  uv_write_t *req = xmalloc(sizeof(uv_write_t));
+  req->data = buf;
+  return uv_write(req, (uv_stream_t *) process->in, &b, 1, write_cb);
+}
+
+bool pty_resize(pty_process *process) {
+  if (process == NULL) return false;
+  if (process->columns <= 0 || process->rows <= 0) return false;
+#ifdef _WIN32
+  COORD size = {(int16_t) process->columns, (int16_t) process->rows};
+  return pResizePseudoConsole(process->pty, size) == S_OK;
+#else
+  struct winsize size = {process->rows, process->columns, 0, 0};
+  return ioctl(process->pty, TIOCSWINSZ, &size) == 0;
+#endif
+}
+
+bool pty_kill(pty_process *process, int sig) {
+  if (process == NULL) return false;
+#ifdef _WIN32
+  return TerminateProcess(process->handle, 1) != 0;
+#else
+  return uv_kill(-process->pid, sig) == 0;
+#endif
+}
+
+#ifdef _WIN32
+bool conpty_init() {
+  uv_lib_t kernel;
+  if (uv_dlopen("kernel32.dll", &kernel)) {
+    uv_dlclose(&kernel);
+    return false;
+  }
+  static struct {
+    char *name;
+    FARPROC *ptr;
+  } conpty_entry[] = {{"CreatePseudoConsole", (FARPROC *) &pCreatePseudoConsole},
+                      {"ResizePseudoConsole", (FARPROC *) &pResizePseudoConsole},
+                      {"ClosePseudoConsole", (FARPROC *) &pClosePseudoConsole},
+                      {NULL, NULL}};
+  for (int i = 0; conpty_entry[i].name != NULL && conpty_entry[i].ptr != NULL; i++) {
+    if (uv_dlsym(&kernel, conpty_entry[i].name, (void **) conpty_entry[i].ptr)) {
+      uv_dlclose(&kernel);
+      return false;
+    }
+  }
+  return true;
+}
+
+static WCHAR *to_utf16(char *str) {
+  int len = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
+  if (len <= 0) return NULL;
+  WCHAR *wstr = xmalloc((len + 1) * sizeof(WCHAR));
+  if (len != MultiByteToWideChar(CP_UTF8, 0, str, -1, wstr, len)) {
+    free(wstr);
+    return NULL;
+  }
+  wstr[len] = L'\0';
+  return wstr;
+}
+
+// convert argv to cmdline for CreateProcessW
+static WCHAR *join_args(char **argv) {
+  char args[256] = {0};
+  char **ptr = argv;
+  for (; *ptr; ptr++) {
+    char *quoted = (char *) quote_arg(*ptr);
+    size_t arg_len = strlen(args) + 1;
+    size_t quoted_len = strlen(quoted);
+    if (arg_len == 1) memset(args, 0, 2);
+    if (arg_len != 1) strcat(args, " ");
+    strncat(args, quoted, quoted_len);
+    if (quoted != *ptr) free(quoted);
+  }
+  if (args[255] != '\0') args[255] = '\0';  // truncate
+  return to_utf16(args);
+}
+
+static bool conpty_setup(HPCON *hnd, COORD size, STARTUPINFOEXW *si_ex, char **in_name, char **out_name) {
+  static int count = 0;
+  char buf[256];
+  HPCON pty = INVALID_HANDLE_VALUE;
+  SECURITY_ATTRIBUTES sa = {0};
+  HANDLE in_pipe = INVALID_HANDLE_VALUE;
+  HANDLE out_pipe = INVALID_HANDLE_VALUE;
+  const DWORD open_mode = PIPE_ACCESS_INBOUND | PIPE_ACCESS_OUTBOUND | FILE_FLAG_FIRST_PIPE_INSTANCE;
+  const DWORD pipe_mode = PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT;
+  DWORD pid = GetCurrentProcessId();
+  bool ret = false;
+
+  sa.nLength = sizeof(sa);
+  snprintf(buf, sizeof(buf), "\\\\.\\pipe\\ttyd-term-in-%d-%d", pid, count);
+  *in_name = strdup(buf);
+  snprintf(buf, sizeof(buf), "\\\\.\\pipe\\ttyd-term-out-%d-%d", pid, count);
+  *out_name = strdup(buf);
+  in_pipe = CreateNamedPipeA(*in_name, open_mode, pipe_mode, 1, 0, 0, 30000, &sa);
+  out_pipe = CreateNamedPipeA(*out_name, open_mode, pipe_mode, 1, 0, 0, 30000, &sa);
+  if (in_pipe == INVALID_HANDLE_VALUE || out_pipe == INVALID_HANDLE_VALUE) {
+    print_error("CreateNamedPipeA");
+    goto failed;
+  }
+
+  HRESULT hr = pCreatePseudoConsole(size, in_pipe, out_pipe, 0, &pty);
+  if (FAILED(hr)) {
+    print_error("CreatePseudoConsole");
+    goto failed;
+  }
+
+  si_ex->StartupInfo.cb = sizeof(STARTUPINFOEXW);
+  si_ex->StartupInfo.dwFlags |= STARTF_USESTDHANDLES;
+  si_ex->StartupInfo.hStdError = NULL;
+  si_ex->StartupInfo.hStdInput = NULL;
+  si_ex->StartupInfo.hStdOutput = NULL;
+  size_t bytes_required;
+  InitializeProcThreadAttributeList(NULL, 1, 0, &bytes_required);
+  si_ex->lpAttributeList = (PPROC_THREAD_ATTRIBUTE_LIST) xmalloc(bytes_required);
+  if (!InitializeProcThreadAttributeList(si_ex->lpAttributeList, 1, 0, &bytes_required)) {
+    print_error("InitializeProcThreadAttributeList");
+    goto failed;
+  }
+  if (!UpdateProcThreadAttribute(si_ex->lpAttributeList, 0, PROC_THREAD_ATTRIBUTE_PSEUDOCONSOLE, pty, sizeof(HPCON),
+                                 NULL, NULL)) {
+    print_error("UpdateProcThreadAttribute");
+    goto failed;
+  }
+  count++;
+  *hnd = pty;
+  ret = true;
+  goto done;
+
+failed:
+  ret = false;
+  free(*in_name);
+  *in_name = NULL;
+  free(*out_name);
+  *out_name = NULL;
+done:
+  if (in_pipe != INVALID_HANDLE_VALUE) CloseHandle(in_pipe);
+  if (out_pipe != INVALID_HANDLE_VALUE) CloseHandle(out_pipe);
+  return ret;
+}
+
+static void connect_cb(uv_connect_t *req, int status) { free(req); }
+
+static void CALLBACK conpty_exit(void *context, BOOLEAN unused) {
+  pty_process *process = (pty_process *) context;
+  uv_async_send(&process->async);
+}
+
+static void async_cb(uv_async_t *async) {
+  pty_process *process = (pty_process *) async->data;
+  UnregisterWait(process->wait);
+
+  DWORD exit_code;
+  GetExitCodeProcess(process->handle, &exit_code);
+  process->exit_code = (int) exit_code;
+  process->exit_signal = 1;
+  process->exit_cb(process);
+
+  uv_close((uv_handle_t *) async, async_free_cb);
+  process_free(process);
+}
+
+int pty_spawn(pty_process *process, pty_read_cb read_cb, pty_exit_cb exit_cb) {
+  char *in_name = NULL;
+  char *out_name = NULL;
+  DWORD flags = EXTENDED_STARTUPINFO_PRESENT | CREATE_UNICODE_ENVIRONMENT;
+  COORD size = {(int16_t) process->columns, (int16_t) process->rows};
+
+  if (!conpty_setup(&process->pty, size, &process->si, &in_name, &out_name)) return 1;
+
+  SetConsoleCtrlHandler(NULL, FALSE);
+
+  int status = 1;
+  process->in = xmalloc(sizeof(uv_pipe_t));
+  process->out = xmalloc(sizeof(uv_pipe_t));
+  uv_pipe_init(process->loop, process->in, 0);
+  uv_pipe_init(process->loop, process->out, 0);
+
+  uv_connect_t *in_req = xmalloc(sizeof(uv_connect_t));
+  uv_connect_t *out_req = xmalloc(sizeof(uv_connect_t));
+  uv_pipe_connect(in_req, process->in, in_name, connect_cb);
+  uv_pipe_connect(out_req, process->out, out_name, connect_cb);
+
+  PROCESS_INFORMATION pi = {0};
+  WCHAR *cmdline, *cwd;
+  cmdline = join_args(process->argv);
+  if (cmdline == NULL) goto cleanup;
+  if (process->envp != NULL) {
+    char **p = process->envp;
+    for (; *p; p++) {
+      WCHAR *env = to_utf16(*p);
+      if (env == NULL) goto cleanup;
+      _wputenv(env);
+      free(env);
+    }
+  }
+  if (process->cwd != NULL) {
+    cwd = to_utf16(process->cwd);
+    if (cwd == NULL) goto cleanup;
+  }
+
+  if (!CreateProcessW(NULL, cmdline, NULL, NULL, FALSE, flags, NULL, cwd, &process->si.StartupInfo, &pi)) {
+    print_error("CreateProcessW");
+    DWORD exitCode = 0;
+    if (GetExitCodeProcess(pi.hProcess, &exitCode)) printf("== exit code: %d\n", exitCode);
+    goto cleanup;
+  }
+
+  process->pid = pi.dwProcessId;
+  process->handle = pi.hProcess;
+  process->paused = true;
+  process->read_cb = read_cb;
+  process->exit_cb = exit_cb;
+  process->async.data = process;
+  uv_async_init(process->loop, &process->async, async_cb);
+
+  if (!RegisterWaitForSingleObject(&process->wait, pi.hProcess, conpty_exit, process, INFINITE, WT_EXECUTEONLYONCE)) {
+    print_error("RegisterWaitForSingleObject");
+    goto cleanup;
+  }
+
+  status = 0;
+
+cleanup:
+  if (in_name != NULL) free(in_name);
+  if (out_name != NULL) free(out_name);
+  if (cmdline != NULL) free(cmdline);
+  if (cwd != NULL) free(cwd);
+  return status;
+}
+#else
+static bool fd_set_cloexec(const int fd) {
+  int flags = fcntl(fd, F_GETFD);
+  if (flags < 0) return false;
+  return (flags & FD_CLOEXEC) == 0 || fcntl(fd, F_SETFD, flags | FD_CLOEXEC) != -1;
+}
+
+static bool fd_duplicate(int fd, uv_pipe_t *pipe) {
+  int fd_dup = dup(fd);
+  if (fd_dup < 0) return false;
+
+  if (!fd_set_cloexec(fd_dup)) return false;
+
+  int status = uv_pipe_open(pipe, fd_dup);
+  if (status) close(fd_dup);
+  return status == 0;
+}
+
+static void wait_cb(void *arg) {
+  pty_process *process = (pty_process *) arg;
+
+  pid_t pid;
+  int stat;
+  do
+    pid = waitpid(process->pid, &stat, 0);
+  while (pid != process->pid && errno == EINTR);
+
+  if (WIFEXITED(stat)) {
+    process->exit_code = WEXITSTATUS(stat);
+  }
+  if (WIFSIGNALED(stat)) {
+    int sig = WTERMSIG(stat);
+    process->exit_code = 128 + sig;
+    process->exit_signal = sig;
+  }
+
+  uv_async_send(&process->async);
+}
+
+static void async_cb(uv_async_t *async) {
+  pty_process *process = (pty_process *) async->data;
+  process->exit_cb(process);
+
+  uv_close((uv_handle_t *) async, async_free_cb);
+  process_free(process);
+}
+
+int pty_spawn(pty_process *process, pty_read_cb read_cb, pty_exit_cb exit_cb) {
+  int status = 0;
+
+  uv_disable_stdio_inheritance();
+
+  int master, pid;
+  struct winsize size = {process->rows, process->columns, 0, 0};
+  pid = forkpty(&master, NULL, NULL, &size);
+  if (pid < 0) {
+    status = -errno;
+    return status;
+  } else if (pid == 0) {
+    setsid();
+    if (process->cwd != NULL) chdir(process->cwd);
+    if (process->envp != NULL) {
+      char **p = process->envp;
+      for (; *p; p++) putenv(*p);
+    }
+    int ret = execvp(process->argv[0], process->argv);
+    if (ret < 0) {
+      perror("execvp failed\n");
+      _exit(-errno);
+    }
+  }
+
+  int flags = fcntl(master, F_GETFL);
+  if (flags == -1) {
+    status = -errno;
+    goto error;
+  }
+  if (fcntl(master, F_SETFL, flags | O_NONBLOCK) == -1) {
+    status = -errno;
+    goto error;
+  }
+  if (!fd_set_cloexec(master)) {
+    status = -errno;
+    goto error;
+  }
+
+  process->in = xmalloc(sizeof(uv_pipe_t));
+  process->out = xmalloc(sizeof(uv_pipe_t));
+  uv_pipe_init(process->loop, process->in, 0);
+  uv_pipe_init(process->loop, process->out, 0);
+
+  if (!fd_duplicate(master, process->in) || !fd_duplicate(master, process->out)) {
+    status = -errno;
+    goto error;
+  }
+
+  process->pty = master;
+  process->pid = pid;
+  process->paused = true;
+  process->read_cb = read_cb;
+  process->exit_cb = exit_cb;
+  process->async.data = process;
+  uv_async_init(process->loop, &process->async, async_cb);
+  uv_thread_create(&process->tid, wait_cb, process);
+
+  return 0;
+
+error:
+  close(master);
+  uv_kill(pid, SIGKILL);
+  waitpid(pid, NULL, 0);
+  return status;
+}
+#endif

src/pty.h

@@ -0,0 +1,68 @@
+#ifndef TTYD_PTY_H
+#define TTYD_PTY_H
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <uv.h>
+
+#ifdef _WIN32
+#ifndef HPCON
+#define HPCON VOID *
+#endif
+#ifndef PROC_THREAD_ATTRIBUTE_PSEUDOCONSOLE
+#define PROC_THREAD_ATTRIBUTE_PSEUDOCONSOLE 0x00020016
+#endif
+
+bool conpty_init();
+#endif
+
+typedef struct {
+  char *base;
+  size_t len;
+} pty_buf_t;
+
+struct pty_process_;
+typedef struct pty_process_ pty_process;
+typedef void (*pty_read_cb)(pty_process *, pty_buf_t *, bool);
+typedef void (*pty_exit_cb)(pty_process *);
+
+struct pty_process_ {
+  int pid, exit_code, exit_signal;
+  uint16_t columns, rows;
+#ifdef _WIN32
+  STARTUPINFOEXW si;
+  HPCON pty;
+  HANDLE handle;
+  HANDLE wait;
+#else
+  pid_t pty;
+  uv_thread_t tid;
+#endif
+  char **argv;
+  char **envp;
+  char *cwd;
+
+  uv_loop_t *loop;
+  uv_async_t async;
+  uv_pipe_t *in;
+  uv_pipe_t *out;
+  bool paused;
+
+  pty_read_cb read_cb;
+  pty_exit_cb exit_cb;
+  void *ctx;
+};
+
+pty_buf_t *pty_buf_init(char *base, size_t len);
+void pty_buf_free(pty_buf_t *buf);
+pty_process *process_init(void *ctx, uv_loop_t *loop, char *argv[], char *envp[]);
+bool process_running(pty_process *process);
+void process_free(pty_process *process);
+int pty_spawn(pty_process *process, pty_read_cb read_cb, pty_exit_cb exit_cb);
+void pty_pause(pty_process *process);
+void pty_resume(pty_process *process);
+int pty_write(pty_process *process, pty_buf_t *buf);
+bool pty_resize(pty_process *process);
+bool pty_kill(pty_process *process, int sig);
+
+#endif  // TTYD_PTY_H

src/queue.h

@@ -1,574 +0,0 @@
-/*
- * Copyright (c) 1991, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	@(#)queue.h	8.5 (Berkeley) 8/20/94
- */
-
-#ifndef	_SYS_QUEUE_H_
-#define	_SYS_QUEUE_H_
-
-/*
- * This file defines five types of data structures: singly-linked lists,
- * lists, simple queues, tail queues, and circular queues.
- *
- * A singly-linked list is headed by a single forward pointer. The
- * elements are singly linked for minimum space and pointer manipulation
- * overhead at the expense of O(n) removal for arbitrary elements. New
- * elements can be added to the list after an existing element or at the
- * head of the list.  Elements being removed from the head of the list
- * should use the explicit macro for this purpose for optimum
- * efficiency. A singly-linked list may only be traversed in the forward
- * direction.  Singly-linked lists are ideal for applications with large
- * datasets and few or no removals or for implementing a LIFO queue.
- *
- * A list is headed by a single forward pointer (or an array of forward
- * pointers for a hash table header). The elements are doubly linked
- * so that an arbitrary element can be removed without a need to
- * traverse the list. New elements can be added to the list before
- * or after an existing element or at the head of the list. A list
- * may only be traversed in the forward direction.
- *
- * A simple queue is headed by a pair of pointers, one the head of the
- * list and the other to the tail of the list. The elements are singly
- * linked to save space, so elements can only be removed from the
- * head of the list. New elements can be added to the list after
- * an existing element, at the head of the list, or at the end of the
- * list. A simple queue may only be traversed in the forward direction.
- *
- * A tail queue is headed by a pair of pointers, one to the head of the
- * list and the other to the tail of the list. The elements are doubly
- * linked so that an arbitrary element can be removed without a need to
- * traverse the list. New elements can be added to the list before or
- * after an existing element, at the head of the list, or at the end of
- * the list. A tail queue may be traversed in either direction.
- *
- * A circle queue is headed by a pair of pointers, one to the head of the
- * list and the other to the tail of the list. The elements are doubly
- * linked so that an arbitrary element can be removed without a need to
- * traverse the list. New elements can be added to the list before or after
- * an existing element, at the head of the list, or at the end of the list.
- * A circle queue may be traversed in either direction, but has a more
- * complex end of list detection.
- *
- * For details on the use of these macros, see the queue(3) manual page.
- */
-
-/*
- * List definitions.
- */
-#define	LIST_HEAD(name, type)						\
-struct name {								\
-	struct type *lh_first;	/* first element */			\
-}
-
-#define	LIST_HEAD_INITIALIZER(head)					\
-	{ NULL }
-
-#define	LIST_ENTRY(type)						\
-struct {								\
-	struct type *le_next;	/* next element */			\
-	struct type **le_prev;	/* address of previous next element */	\
-}
-
-/*
- * List functions.
- */
-#define	LIST_INIT(head) do {						\
-	(head)->lh_first = NULL;					\
-} while (/*CONSTCOND*/0)
-
-#define	LIST_INSERT_AFTER(listelm, elm, field) do {			\
-	if (((elm)->field.le_next = (listelm)->field.le_next) != NULL)	\
-		(listelm)->field.le_next->field.le_prev =		\
-		    &(elm)->field.le_next;				\
-	(listelm)->field.le_next = (elm);				\
-	(elm)->field.le_prev = &(listelm)->field.le_next;		\
-} while (/*CONSTCOND*/0)
-
-#define	LIST_INSERT_BEFORE(listelm, elm, field) do {			\
-	(elm)->field.le_prev = (listelm)->field.le_prev;		\
-	(elm)->field.le_next = (listelm);				\
-	*(listelm)->field.le_prev = (elm);				\
-	(listelm)->field.le_prev = &(elm)->field.le_next;		\
-} while (/*CONSTCOND*/0)
-
-#define	LIST_INSERT_HEAD(head, elm, field) do {				\
-	if (((elm)->field.le_next = (head)->lh_first) != NULL)		\
-		(head)->lh_first->field.le_prev = &(elm)->field.le_next;\
-	(head)->lh_first = (elm);					\
-	(elm)->field.le_prev = &(head)->lh_first;			\
-} while (/*CONSTCOND*/0)
-
-#define	LIST_REMOVE(elm, field) do {					\
-	if ((elm)->field.le_next != NULL)				\
-		(elm)->field.le_next->field.le_prev = 			\
-		    (elm)->field.le_prev;				\
-	*(elm)->field.le_prev = (elm)->field.le_next;			\
-} while (/*CONSTCOND*/0)
-
-#define	LIST_FOREACH(var, head, field)					\
-	for ((var) = ((head)->lh_first);				\
-		(var);							\
-		(var) = ((var)->field.le_next))
-
-/*
- * List access methods.
- */
-#define	LIST_EMPTY(head)		((head)->lh_first == NULL)
-#define	LIST_FIRST(head)		((head)->lh_first)
-#define	LIST_NEXT(elm, field)		((elm)->field.le_next)
-
-
-/*
- * Singly-linked List definitions.
- */
-#define	SLIST_HEAD(name, type)						\
-struct name {								\
-	struct type *slh_first;	/* first element */			\
-}
-
-#define	SLIST_HEAD_INITIALIZER(head)					\
-	{ NULL }
-
-#define	SLIST_ENTRY(type)						\
-struct {								\
-	struct type *sle_next;	/* next element */			\
-}
-
-/*
- * Singly-linked List functions.
- */
-#define	SLIST_INIT(head) do {						\
-	(head)->slh_first = NULL;					\
-} while (/*CONSTCOND*/0)
-
-#define	SLIST_INSERT_AFTER(slistelm, elm, field) do {			\
-	(elm)->field.sle_next = (slistelm)->field.sle_next;		\
-	(slistelm)->field.sle_next = (elm);				\
-} while (/*CONSTCOND*/0)
-
-#define	SLIST_INSERT_HEAD(head, elm, field) do {			\
-	(elm)->field.sle_next = (head)->slh_first;			\
-	(head)->slh_first = (elm);					\
-} while (/*CONSTCOND*/0)
-
-#define	SLIST_REMOVE_HEAD(head, field) do {				\
-	(head)->slh_first = (head)->slh_first->field.sle_next;		\
-} while (/*CONSTCOND*/0)
-
-#define	SLIST_REMOVE(head, elm, type, field) do {			\
-	if ((head)->slh_first == (elm)) {				\
-		SLIST_REMOVE_HEAD((head), field);			\
-	}								\
-	else {								\
-		struct type *curelm = (head)->slh_first;		\
-		while(curelm->field.sle_next != (elm))			\
-			curelm = curelm->field.sle_next;		\
-		curelm->field.sle_next =				\
-		    curelm->field.sle_next->field.sle_next;		\
-	}								\
-} while (/*CONSTCOND*/0)
-
-#define	SLIST_FOREACH(var, head, field)					\
-	for((var) = (head)->slh_first; (var); (var) = (var)->field.sle_next)
-
-/*
- * Singly-linked List access methods.
- */
-#define	SLIST_EMPTY(head)	((head)->slh_first == NULL)
-#define	SLIST_FIRST(head)	((head)->slh_first)
-#define	SLIST_NEXT(elm, field)	((elm)->field.sle_next)
-
-
-/*
- * Singly-linked Tail queue declarations.
- */
-#define	STAILQ_HEAD(name, type)					\
-struct name {								\
-	struct type *stqh_first;	/* first element */			\
-	struct type **stqh_last;	/* addr of last next element */		\
-}
-
-#define	STAILQ_HEAD_INITIALIZER(head)					\
-	{ NULL, &(head).stqh_first }
-
-#define	STAILQ_ENTRY(type)						\
-struct {								\
-	struct type *stqe_next;	/* next element */			\
-}
-
-/*
- * Singly-linked Tail queue functions.
- */
-#define	STAILQ_INIT(head) do {						\
-	(head)->stqh_first = NULL;					\
-	(head)->stqh_last = &(head)->stqh_first;				\
-} while (/*CONSTCOND*/0)
-
-#define	STAILQ_INSERT_HEAD(head, elm, field) do {			\
-	if (((elm)->field.stqe_next = (head)->stqh_first) == NULL)	\
-		(head)->stqh_last = &(elm)->field.stqe_next;		\
-	(head)->stqh_first = (elm);					\
-} while (/*CONSTCOND*/0)
-
-#define	STAILQ_INSERT_TAIL(head, elm, field) do {			\
-	(elm)->field.stqe_next = NULL;					\
-	*(head)->stqh_last = (elm);					\
-	(head)->stqh_last = &(elm)->field.stqe_next;			\
-} while (/*CONSTCOND*/0)
-
-#define	STAILQ_INSERT_AFTER(head, listelm, elm, field) do {		\
-	if (((elm)->field.stqe_next = (listelm)->field.stqe_next) == NULL)\
-		(head)->stqh_last = &(elm)->field.stqe_next;		\
-	(listelm)->field.stqe_next = (elm);				\
-} while (/*CONSTCOND*/0)
-
-#define	STAILQ_REMOVE_HEAD(head, field) do {				\
-	if (((head)->stqh_first = (head)->stqh_first->field.stqe_next) == NULL) \
-		(head)->stqh_last = &(head)->stqh_first;			\
-} while (/*CONSTCOND*/0)
-
-#define	STAILQ_REMOVE(head, elm, type, field) do {			\
-	if ((head)->stqh_first == (elm)) {				\
-		STAILQ_REMOVE_HEAD((head), field);			\
-	} else {							\
-		struct type *curelm = (head)->stqh_first;		\
-		while (curelm->field.stqe_next != (elm))			\
-			curelm = curelm->field.stqe_next;		\
-		if ((curelm->field.stqe_next =				\
-			curelm->field.stqe_next->field.stqe_next) == NULL) \
-			    (head)->stqh_last = &(curelm)->field.stqe_next; \
-	}								\
-} while (/*CONSTCOND*/0)
-
-#define	STAILQ_FOREACH(var, head, field)				\
-	for ((var) = ((head)->stqh_first);				\
-		(var);							\
-		(var) = ((var)->field.stqe_next))
-
-#define	STAILQ_CONCAT(head1, head2) do {				\
-	if (!STAILQ_EMPTY((head2))) {					\
-		*(head1)->stqh_last = (head2)->stqh_first;		\
-		(head1)->stqh_last = (head2)->stqh_last;		\
-		STAILQ_INIT((head2));					\
-	}								\
-} while (/*CONSTCOND*/0)
-
-/*
- * Singly-linked Tail queue access methods.
- */
-#define	STAILQ_EMPTY(head)	((head)->stqh_first == NULL)
-#define	STAILQ_FIRST(head)	((head)->stqh_first)
-#define	STAILQ_NEXT(elm, field)	((elm)->field.stqe_next)
-
-
-/*
- * Simple queue definitions.
- */
-#define	SIMPLEQ_HEAD(name, type)					\
-struct name {								\
-	struct type *sqh_first;	/* first element */			\
-	struct type **sqh_last;	/* addr of last next element */		\
-}
-
-#define	SIMPLEQ_HEAD_INITIALIZER(head)					\
-	{ NULL, &(head).sqh_first }
-
-#define	SIMPLEQ_ENTRY(type)						\
-struct {								\
-	struct type *sqe_next;	/* next element */			\
-}
-
-/*
- * Simple queue functions.
- */
-#define	SIMPLEQ_INIT(head) do {						\
-	(head)->sqh_first = NULL;					\
-	(head)->sqh_last = &(head)->sqh_first;				\
-} while (/*CONSTCOND*/0)
-
-#define	SIMPLEQ_INSERT_HEAD(head, elm, field) do {			\
-	if (((elm)->field.sqe_next = (head)->sqh_first) == NULL)	\
-		(head)->sqh_last = &(elm)->field.sqe_next;		\
-	(head)->sqh_first = (elm);					\
-} while (/*CONSTCOND*/0)
-
-#define	SIMPLEQ_INSERT_TAIL(head, elm, field) do {			\
-	(elm)->field.sqe_next = NULL;					\
-	*(head)->sqh_last = (elm);					\
-	(head)->sqh_last = &(elm)->field.sqe_next;			\
-} while (/*CONSTCOND*/0)
-
-#define	SIMPLEQ_INSERT_AFTER(head, listelm, elm, field) do {		\
-	if (((elm)->field.sqe_next = (listelm)->field.sqe_next) == NULL)\
-		(head)->sqh_last = &(elm)->field.sqe_next;		\
-	(listelm)->field.sqe_next = (elm);				\
-} while (/*CONSTCOND*/0)
-
-#define	SIMPLEQ_REMOVE_HEAD(head, field) do {				\
-	if (((head)->sqh_first = (head)->sqh_first->field.sqe_next) == NULL) \
-		(head)->sqh_last = &(head)->sqh_first;			\
-} while (/*CONSTCOND*/0)
-
-#define	SIMPLEQ_REMOVE(head, elm, type, field) do {			\
-	if ((head)->sqh_first == (elm)) {				\
-		SIMPLEQ_REMOVE_HEAD((head), field);			\
-	} else {							\
-		struct type *curelm = (head)->sqh_first;		\
-		while (curelm->field.sqe_next != (elm))			\
-			curelm = curelm->field.sqe_next;		\
-		if ((curelm->field.sqe_next =				\
-			curelm->field.sqe_next->field.sqe_next) == NULL) \
-			    (head)->sqh_last = &(curelm)->field.sqe_next; \
-	}								\
-} while (/*CONSTCOND*/0)
-
-#define	SIMPLEQ_FOREACH(var, head, field)				\
-	for ((var) = ((head)->sqh_first);				\
-		(var);							\
-		(var) = ((var)->field.sqe_next))
-
-/*
- * Simple queue access methods.
- */
-#define	SIMPLEQ_EMPTY(head)		((head)->sqh_first == NULL)
-#define	SIMPLEQ_FIRST(head)		((head)->sqh_first)
-#define	SIMPLEQ_NEXT(elm, field)	((elm)->field.sqe_next)
-
-
-/*
- * Tail queue definitions.
- */
-#define	_TAILQ_HEAD(name, type, qual)					\
-struct name {								\
-	qual type *tqh_first;		/* first element */		\
-	qual type *qual *tqh_last;	/* addr of last next element */	\
-}
-#define TAILQ_HEAD(name, type)	_TAILQ_HEAD(name, struct type,)
-
-#define	TAILQ_HEAD_INITIALIZER(head)					\
-	{ NULL, &(head).tqh_first }
-
-#define	_TAILQ_ENTRY(type, qual)					\
-struct {								\
-	qual type *tqe_next;		/* next element */		\
-	qual type *qual *tqe_prev;	/* address of previous next element */\
-}
-#define TAILQ_ENTRY(type)	_TAILQ_ENTRY(struct type,)
-
-/*
- * Tail queue functions.
- */
-#define	TAILQ_INIT(head) do {						\
-	(head)->tqh_first = NULL;					\
-	(head)->tqh_last = &(head)->tqh_first;				\
-} while (/*CONSTCOND*/0)
-
-#define	TAILQ_INSERT_HEAD(head, elm, field) do {			\
-	if (((elm)->field.tqe_next = (head)->tqh_first) != NULL)	\
-		(head)->tqh_first->field.tqe_prev =			\
-		    &(elm)->field.tqe_next;				\
-	else								\
-		(head)->tqh_last = &(elm)->field.tqe_next;		\
-	(head)->tqh_first = (elm);					\
-	(elm)->field.tqe_prev = &(head)->tqh_first;			\
-} while (/*CONSTCOND*/0)
-
-#define	TAILQ_INSERT_TAIL(head, elm, field) do {			\
-	(elm)->field.tqe_next = NULL;					\
-	(elm)->field.tqe_prev = (head)->tqh_last;			\
-	*(head)->tqh_last = (elm);					\
-	(head)->tqh_last = &(elm)->field.tqe_next;			\
-} while (/*CONSTCOND*/0)
-
-#define	TAILQ_INSERT_AFTER(head, listelm, elm, field) do {		\
-	if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
-		(elm)->field.tqe_next->field.tqe_prev = 		\
-		    &(elm)->field.tqe_next;				\
-	else								\
-		(head)->tqh_last = &(elm)->field.tqe_next;		\
-	(listelm)->field.tqe_next = (elm);				\
-	(elm)->field.tqe_prev = &(listelm)->field.tqe_next;		\
-} while (/*CONSTCOND*/0)
-
-#define	TAILQ_INSERT_BEFORE(listelm, elm, field) do {			\
-	(elm)->field.tqe_prev = (listelm)->field.tqe_prev;		\
-	(elm)->field.tqe_next = (listelm);				\
-	*(listelm)->field.tqe_prev = (elm);				\
-	(listelm)->field.tqe_prev = &(elm)->field.tqe_next;		\
-} while (/*CONSTCOND*/0)
-
-#define	TAILQ_REMOVE(head, elm, field) do {				\
-	if (((elm)->field.tqe_next) != NULL)				\
-		(elm)->field.tqe_next->field.tqe_prev = 		\
-		    (elm)->field.tqe_prev;				\
-	else								\
-		(head)->tqh_last = (elm)->field.tqe_prev;		\
-	*(elm)->field.tqe_prev = (elm)->field.tqe_next;			\
-} while (/*CONSTCOND*/0)
-
-#define	TAILQ_FOREACH(var, head, field)					\
-	for ((var) = ((head)->tqh_first);				\
-		(var);							\
-		(var) = ((var)->field.tqe_next))
-
-#define	TAILQ_FOREACH_REVERSE(var, head, headname, field)		\
-	for ((var) = (*(((struct headname *)((head)->tqh_last))->tqh_last));	\
-		(var);							\
-		(var) = (*(((struct headname *)((var)->field.tqe_prev))->tqh_last)))
-
-#define	TAILQ_CONCAT(head1, head2, field) do {				\
-	if (!TAILQ_EMPTY(head2)) {					\
-		*(head1)->tqh_last = (head2)->tqh_first;		\
-		(head2)->tqh_first->field.tqe_prev = (head1)->tqh_last;	\
-		(head1)->tqh_last = (head2)->tqh_last;			\
-		TAILQ_INIT((head2));					\
-	}								\
-} while (/*CONSTCOND*/0)
-
-/*
- * Tail queue access methods.
- */
-#define	TAILQ_EMPTY(head)		((head)->tqh_first == NULL)
-#define	TAILQ_FIRST(head)		((head)->tqh_first)
-#define	TAILQ_NEXT(elm, field)		((elm)->field.tqe_next)
-
-#define	TAILQ_LAST(head, headname) \
-	(*(((struct headname *)((head)->tqh_last))->tqh_last))
-#define	TAILQ_PREV(elm, headname, field) \
-	(*(((struct headname *)((elm)->field.tqe_prev))->tqh_last))
-
-
-/*
- * Circular queue definitions.
- */
-#define	CIRCLEQ_HEAD(name, type)					\
-struct name {								\
-	struct type *cqh_first;		/* first element */		\
-	struct type *cqh_last;		/* last element */		\
-}
-
-#define	CIRCLEQ_HEAD_INITIALIZER(head)					\
-	{ (void *)&head, (void *)&head }
-
-#define	CIRCLEQ_ENTRY(type)						\
-struct {								\
-	struct type *cqe_next;		/* next element */		\
-	struct type *cqe_prev;		/* previous element */		\
-}
-
-/*
- * Circular queue functions.
- */
-#define	CIRCLEQ_INIT(head) do {						\
-	(head)->cqh_first = (void *)(head);				\
-	(head)->cqh_last = (void *)(head);				\
-} while (/*CONSTCOND*/0)
-
-#define	CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) do {		\
-	(elm)->field.cqe_next = (listelm)->field.cqe_next;		\
-	(elm)->field.cqe_prev = (listelm);				\
-	if ((listelm)->field.cqe_next == (void *)(head))		\
-		(head)->cqh_last = (elm);				\
-	else								\
-		(listelm)->field.cqe_next->field.cqe_prev = (elm);	\
-	(listelm)->field.cqe_next = (elm);				\
-} while (/*CONSTCOND*/0)
-
-#define	CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) do {		\
-	(elm)->field.cqe_next = (listelm);				\
-	(elm)->field.cqe_prev = (listelm)->field.cqe_prev;		\
-	if ((listelm)->field.cqe_prev == (void *)(head))		\
-		(head)->cqh_first = (elm);				\
-	else								\
-		(listelm)->field.cqe_prev->field.cqe_next = (elm);	\
-	(listelm)->field.cqe_prev = (elm);				\
-} while (/*CONSTCOND*/0)
-
-#define	CIRCLEQ_INSERT_HEAD(head, elm, field) do {			\
-	(elm)->field.cqe_next = (head)->cqh_first;			\
-	(elm)->field.cqe_prev = (void *)(head);				\
-	if ((head)->cqh_last == (void *)(head))				\
-		(head)->cqh_last = (elm);				\
-	else								\
-		(head)->cqh_first->field.cqe_prev = (elm);		\
-	(head)->cqh_first = (elm);					\
-} while (/*CONSTCOND*/0)
-
-#define	CIRCLEQ_INSERT_TAIL(head, elm, field) do {			\
-	(elm)->field.cqe_next = (void *)(head);				\
-	(elm)->field.cqe_prev = (head)->cqh_last;			\
-	if ((head)->cqh_first == (void *)(head))			\
-		(head)->cqh_first = (elm);				\
-	else								\
-		(head)->cqh_last->field.cqe_next = (elm);		\
-	(head)->cqh_last = (elm);					\
-} while (/*CONSTCOND*/0)
-
-#define	CIRCLEQ_REMOVE(head, elm, field) do {				\
-	if ((elm)->field.cqe_next == (void *)(head))			\
-		(head)->cqh_last = (elm)->field.cqe_prev;		\
-	else								\
-		(elm)->field.cqe_next->field.cqe_prev =			\
-		    (elm)->field.cqe_prev;				\
-	if ((elm)->field.cqe_prev == (void *)(head))			\
-		(head)->cqh_first = (elm)->field.cqe_next;		\
-	else								\
-		(elm)->field.cqe_prev->field.cqe_next =			\
-		    (elm)->field.cqe_next;				\
-} while (/*CONSTCOND*/0)
-
-#define	CIRCLEQ_FOREACH(var, head, field)				\
-	for ((var) = ((head)->cqh_first);				\
-		(var) != (const void *)(head);				\
-		(var) = ((var)->field.cqe_next))
-
-#define	CIRCLEQ_FOREACH_REVERSE(var, head, field)			\
-	for ((var) = ((head)->cqh_last);				\
-		(var) != (const void *)(head);				\
-		(var) = ((var)->field.cqe_prev))
-
-/*
- * Circular queue access methods.
- */
-#define	CIRCLEQ_EMPTY(head)		((head)->cqh_first == (void *)(head))
-#define	CIRCLEQ_FIRST(head)		((head)->cqh_first)
-#define	CIRCLEQ_LAST(head)		((head)->cqh_last)
-#define	CIRCLEQ_NEXT(elm, field)	((elm)->field.cqe_next)
-#define	CIRCLEQ_PREV(elm, field)	((elm)->field.cqe_prev)
-
-#define CIRCLEQ_LOOP_NEXT(head, elm, field)				\
-	(((elm)->field.cqe_next == (void *)(head))			\
-	    ? ((head)->cqh_first)					\
-	    : (elm->field.cqe_next))
-#define CIRCLEQ_LOOP_PREV(head, elm, field)				\
-	(((elm)->field.cqe_prev == (void *)(head))			\
-	    ? ((head)->cqh_last)					\
-	    : (elm->field.cqe_prev))
-
-#endif	/* sys/queue.h */

src/server.c

@@ -22,46 +22,44 @@ struct lws_context *context;
 struct server *server;
 struct endpoints endpoints = {"/ws", "/", "/token", ""};
 
-extern int callback_http(struct lws *wsi, enum lws_callback_reasons reason,
-                         void *user, void *in, size_t len);
-extern int callback_tty(struct lws *wsi, enum lws_callback_reasons reason,
-                        void *user, void *in, size_t len);
+extern int callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len);
+extern int callback_tty(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len);
 
 // websocket protocols
-static const struct lws_protocols protocols[] = {
-    {"http-only", callback_http, sizeof(struct pss_http), 0},
+static const struct lws_protocols protocols[] = {{"http-only", callback_http, sizeof(struct pss_http), 0},
                                                  {"tty", callback_tty, sizeof(struct pss_tty), 0},
                                                  {NULL, NULL, 0, 0}};
 
 #ifndef LWS_WITHOUT_EXTENSIONS
 // websocket extensions
 static const struct lws_extension extensions[] = {
-    {"permessage-deflate", lws_extension_callback_pm_deflate,
-     "permessage-deflate"},
+    {"permessage-deflate", lws_extension_callback_pm_deflate, "permessage-deflate"},
     {"deflate-frame", lws_extension_callback_pm_deflate, "deflate_frame"},
     {NULL, NULL, NULL}};
 #endif
 
 #if LWS_LIBRARY_VERSION_NUMBER >= 4000000
-static const uint32_t backoff_ms[] = { 1000, 2000, 3000, 4000, 5000 };
+static const uint32_t backoff_ms[] = {1000, 2000, 3000, 4000, 5000};
 static lws_retry_bo_t retry = {
     .retry_ms_table = backoff_ms,
     .retry_ms_table_count = LWS_ARRAY_SIZE(backoff_ms),
     .conceal_count = LWS_ARRAY_SIZE(backoff_ms),
-      .secs_since_valid_ping = 300,
-      .secs_since_valid_hangup = 300 + 7,
+    .secs_since_valid_ping = 5,
+    .secs_since_valid_hangup = 10,
     .jitter_percent = 0,
-    };
+};
 #endif
 
 // command line options
-static const struct option options[] = {
-    {"port", required_argument, NULL, 'p'},
+static const struct option options[] = {{"port", required_argument, NULL, 'p'},
                                         {"interface", required_argument, NULL, 'i'},
+                                        {"socket-owner", required_argument, NULL, 'U'},
                                         {"credential", required_argument, NULL, 'c'},
+                                        {"auth-header", required_argument, NULL, 'H'},
                                         {"uid", required_argument, NULL, 'u'},
                                         {"gid", required_argument, NULL, 'g'},
                                         {"signal", required_argument, NULL, 's'},
+                                        {"cwd", required_argument, NULL, 'w'},
                                         {"index", required_argument, NULL, 'I'},
                                         {"base-path", required_argument, NULL, 'b'},
 #if LWS_LIBRARY_VERSION_NUMBER >= 4000000
@@ -73,24 +71,19 @@ static const struct option options[] = {
                                         {"ssl-key", required_argument, NULL, 'K'},
                                         {"ssl-ca", required_argument, NULL, 'A'},
                                         {"url-arg", no_argument, NULL, 'a'},
-    {"readonly", no_argument, NULL, 'R'},
+                                        {"writable", no_argument, NULL, 'W'},
                                         {"terminal-type", required_argument, NULL, 'T'},
                                         {"client-option", required_argument, NULL, 't'},
                                         {"check-origin", no_argument, NULL, 'O'},
                                         {"max-clients", required_argument, NULL, 'm'},
                                         {"once", no_argument, NULL, 'o'},
+                                        {"exit-no-conn", no_argument, NULL, 'q'},
                                         {"browser", no_argument, NULL, 'B'},
                                         {"debug", required_argument, NULL, 'd'},
                                         {"version", no_argument, NULL, 'v'},
                                         {"help", no_argument, NULL, 'h'},
                                         {NULL, 0, 0, 0}};
-
-#if LWS_LIBRARY_VERSION_NUMBER < 4000000
-static const char *opt_string = "p:i:c:u:g:s:I:b:6aSC:K:A:Rt:T:Om:oBd:vh";
-#endif
-#if LWS_LIBRARY_VERSION_NUMBER >= 4000000
-static const char *opt_string = "p:i:c:u:g:s:I:b:P:6aSC:K:A:Rt:T:Om:oBd:vh";
-#endif
+static const char *opt_string = "p:i:U:c:H:u:g:s:w:I:b:P:6aSC:K:A:Wt:T:Om:oqBd:vh";
 
 static void print_help() {
   // clang-format off
@@ -102,22 +95,26 @@ static void print_help() {
           "OPTIONS:\n"
           "    -p, --port              Port to listen (default: 7681, use `0` for random port)\n"
           "    -i, --interface         Network interface to bind (eg: eth0), or UNIX domain socket path (eg: /var/run/ttyd.sock)\n"
-          "    -c, --credential        Credential for Basic Authentication (format: username:password)\n"
+          "    -U, --socket-owner      User owner of the UNIX domain socket file, when enabled (eg: user:group)\n"
+          "    -c, --credential        Credential for basic authentication (format: username:password)\n"
+          "    -H, --auth-header       HTTP Header name for auth proxy, this will configure ttyd to let a HTTP reverse proxy handle authentication\n"
           "    -u, --uid               User id to run with\n"
           "    -g, --gid               Group id to run with\n"
           "    -s, --signal            Signal to send to the command when exit it (default: 1, SIGHUP)\n"
+          "    -w, --cwd               Working directory to be set for the child program\n"
           "    -a, --url-arg           Allow client to send command line arguments in URL (eg: http://localhost:7681?arg=foo&arg=bar)\n"
-          "    -R, --readonly          Do not allow clients to write to the TTY\n"
+          "    -W, --writable          Allow clients to write to the TTY (readonly by default)\n"
           "    -t, --client-option     Send option to client (format: key=value), repeat to add more options\n"
           "    -T, --terminal-type     Terminal type to report, default: xterm-256color\n"
           "    -O, --check-origin      Do not allow websocket connection from different origin\n"
           "    -m, --max-clients       Maximum clients to support (default: 0, no limit)\n"
           "    -o, --once              Accept only one client and exit on disconnection\n"
+          "    -q, --exit-no-conn      Exit on all clients disconnection\n"
           "    -B, --browser           Open terminal with the default system browser\n"
           "    -I, --index             Custom index.html path\n"
-          "    -b, --base-path         Expected base path for requests coming from a reverse proxy (eg: /mounted/here)\n"
+          "    -b, --base-path         Expected base path for requests coming from a reverse proxy (eg: /mounted/here, max length: 128)\n"
 #if LWS_LIBRARY_VERSION_NUMBER >= 4000000
-          "    -P, --ping-interval     Websocket ping interval(sec) (default: 300)\n"
+          "    -P, --ping-interval     Websocket ping interval(sec) (default: 5)\n"
 #endif
 #ifdef LWS_WITH_IPV6
           "    -6, --ipv6              Enable IPv6 support\n"
@@ -137,6 +134,30 @@ static void print_help() {
   // clang-format on
 }
 
+static void print_config() {
+  lwsl_notice("tty configuration:\n");
+  if (server->credential != NULL) lwsl_notice("  credential: %s\n", server->credential);
+  lwsl_notice("  start command: %s\n", server->command);
+  lwsl_notice("  close signal: %s (%d)\n", server->sig_name, server->sig_code);
+  lwsl_notice("  terminal type: %s\n", server->terminal_type);
+  if (endpoints.parent[0]) {
+    lwsl_notice("endpoints:\n");
+    lwsl_notice("  base-path: %s\n", endpoints.parent);
+    lwsl_notice("  index    : %s\n", endpoints.index);
+    lwsl_notice("  token    : %s\n", endpoints.token);
+    lwsl_notice("  websocket: %s\n", endpoints.ws);
+  }
+  if (server->auth_header != NULL) lwsl_notice("  auth header: %s\n", server->auth_header);
+  if (server->check_origin) lwsl_notice("  check origin: true\n");
+  if (server->url_arg) lwsl_notice("  allow url arg: true\n");
+  if (server->max_clients > 0) lwsl_notice("  max clients: %d\n", server->max_clients);
+  if (server->once) lwsl_notice("  once: true\n");
+  if (server->exit_no_conn) lwsl_notice("  exit_no_conn: true\n");
+  if (server->index != NULL) lwsl_notice("  custom index.html: %s\n", server->index);
+  if (server->cwd != NULL) lwsl_notice("  working directory: %s\n", server->cwd);
+  if (!server->writable) lwsl_notice("The --writable option is not set, will start in readonly mode");
+}
+
 static struct server *server_new(int argc, char **argv, int start) {
   struct server *ts;
   size_t cmd_len = 0;
@@ -144,7 +165,6 @@ static struct server *server_new(int argc, char **argv, int start) {
   ts = xmalloc(sizeof(struct server));
 
   memset(ts, 0, sizeof(struct server));
-  LIST_INIT(&ts->procs);
   ts->client_count = 0;
   ts->sig_code = SIGHUP;
   sprintf(ts->terminal_type, "%s", "xterm-256color");
@@ -167,7 +187,8 @@ static struct server *server_new(int argc, char **argv, int start) {
   ts->command = xmalloc(cmd_len + 1);
   char *ptr = ts->command;
   for (int i = 0; i < cmd_argc; i++) {
-    ptr = stpcpy(ptr, ts->argv[i]);
+    size_t len = strlen(ts->argv[i]);
+    ptr = memcpy(ptr, ts->argv[i], len + 1) + len;
     if (i != cmd_argc - 1) {
       *ptr++ = ' ';
     }
@@ -176,8 +197,6 @@ static struct server *server_new(int argc, char **argv, int start) {
 
   ts->loop = xmalloc(sizeof *ts->loop);
   uv_loop_init(ts->loop);
-  uv_signal_init(ts->loop, &ts->watcher);
-  ts->watcher.data = &ts->procs;
 
   return ts;
 }
@@ -185,22 +204,25 @@ static struct server *server_new(int argc, char **argv, int start) {
 static void server_free(struct server *ts) {
   if (ts == NULL) return;
   if (ts->credential != NULL) free(ts->credential);
+  if (ts->auth_header != NULL) free(ts->auth_header);
   if (ts->index != NULL) free(ts->index);
+  if (ts->cwd != NULL) free(ts->cwd);
   free(ts->command);
   free(ts->prefs_json);
-  int i = 0;
-  do {
-    free(ts->argv[i++]);
-  } while (ts->argv[i] != NULL);
+
+  char **p = ts->argv;
+  for (; *p; p++) free(*p);
   free(ts->argv);
+
   if (strlen(ts->socket_path) > 0) {
     struct stat st;
     if (!stat(ts->socket_path, &st)) {
       unlink(ts->socket_path);
     }
   }
-  uv_signal_stop(&ts->watcher);
+
   uv_loop_close(ts->loop);
+
   free(ts->loop);
   free(ts);
 }
@@ -212,8 +234,7 @@ static void signal_cb(uv_signal_t *watcher, int signum) {
     case SIGINT:
     case SIGTERM:
       get_sig_name(watcher->signum, sig_name, sizeof(sig_name));
-      lwsl_notice("received signal: %s (%d), exiting...\n", sig_name,
-                  watcher->signum);
+      lwsl_notice("received signal: %s (%d), exiting...\n", sig_name, watcher->signum);
       break;
     default:
       signal(SIGABRT, SIG_DFL);
@@ -222,14 +243,22 @@ static void signal_cb(uv_signal_t *watcher, int signum) {
 
   if (force_exit) exit(EXIT_FAILURE);
   force_exit = true;
+
   lws_cancel_service(context);
-#if LWS_LIBRARY_VERSION_MAJOR >= 3
   uv_stop(server->loop);
+
   lwsl_notice("send ^C to force exit.\n");
-#else
-  lws_libuv_stop(context);
-  exit(EXIT_SUCCESS);
-#endif
+}
+
+static int parse_int(char *name, char *str) {
+  char *endptr;
+  errno = 0;
+  long val = strtol(str, &endptr, 0);
+  if (errno != 0 || endptr == str) {
+    fprintf(stderr, "ttyd: invalid value for %s: %s\n", name, str);
+    exit(EXIT_FAILURE);
+  }
+  return (int)val;
 }
 
 static int calc_command_start(int argc, char **argv) {
@@ -274,6 +303,12 @@ int main(int argc, char **argv) {
     print_help();
     return 0;
   }
+#ifdef _WIN32
+  if (!conpty_init()) {
+    fprintf(stderr, "ERROR: ConPTY init failed! Make sure you are on Windows 10 1809 or later.");
+    return 1;
+  }
+#endif
 
   int start = calc_command_start(argc, argv);
   server = server_new(argc, argv, start);
@@ -286,15 +321,15 @@ int main(int argc, char **argv) {
   info.gid = -1;
   info.uid = -1;
   info.max_http_header_pool = 16;
-  info.options = LWS_SERVER_OPTION_LIBUV | LWS_SERVER_OPTION_VALIDATE_UTF8 |
-                 LWS_SERVER_OPTION_DISABLE_IPV6;
+  info.options = LWS_SERVER_OPTION_LIBUV | LWS_SERVER_OPTION_VALIDATE_UTF8 | LWS_SERVER_OPTION_DISABLE_IPV6;
 #ifndef LWS_WITHOUT_EXTENSIONS
   info.extensions = extensions;
 #endif
-  info.max_http_header_data = 20480;
+  info.max_http_header_data = 65535;
 
   int debug_level = LLL_ERR | LLL_WARN | LLL_NOTICE;
   char iface[128] = "";
+  char socket_owner[128] = "";
   bool browser = false;
   bool ssl = false;
   char cert_path[1024] = "";
@@ -303,6 +338,10 @@ int main(int argc, char **argv) {
 
   struct json_object *client_prefs = json_object_new_object();
 
+#ifdef _WIN32
+  json_object_object_add(client_prefs, "isWindows", json_object_new_boolean(true));
+#endif
+
   // parse command line options
   int c;
   while ((c = getopt_long(start, argv, opt_string, options, NULL)) != -1) {
@@ -314,28 +353,31 @@ int main(int argc, char **argv) {
         printf("ttyd version %s\n", TTYD_VERSION);
         return 0;
       case 'd':
-        debug_level = atoi(optarg);
+        debug_level = parse_int("debug", optarg);
         break;
       case 'a':
         server->url_arg = true;
         break;
-      case 'R':
-        server->readonly = true;
+      case 'W':
+        server->writable = true;
         break;
       case 'O':
         server->check_origin = true;
         break;
       case 'm':
-        server->max_clients = atoi(optarg);
+        server->max_clients = parse_int("max-clients", optarg);
         break;
       case 'o':
         server->once = true;
         break;
+      case 'q':
+        server->exit_no_conn = true;
+        break;
       case 'B':
         browser = true;
         break;
       case 'p':
-        info.port = atoi(optarg);
+        info.port = parse_int("port", optarg);
         if (info.port < 0) {
           fprintf(stderr, "ttyd: invalid port: %s\n", optarg);
           return -1;
@@ -345,20 +387,27 @@ int main(int argc, char **argv) {
         strncpy(iface, optarg, sizeof(iface) - 1);
         iface[sizeof(iface) - 1] = '\0';
         break;
+      case 'U':
+        strncpy(socket_owner, optarg, sizeof(socket_owner) - 1);
+        socket_owner[sizeof(socket_owner) - 1] = '\0';
+        break;
       case 'c':
         if (strchr(optarg, ':') == NULL) {
-          fprintf(stderr,
-                  "ttyd: invalid credential, format: username:password\n");
+          fprintf(stderr, "ttyd: invalid credential, format: username:password\n");
           return -1;
         }
-        server->credential =
-            base64_encode((const unsigned char *)optarg, strlen(optarg));
+        char b64_text[256];
+        lws_b64_encode_string(optarg, strlen(optarg), b64_text, sizeof(b64_text));
+        server->credential = strdup(b64_text);
+        break;
+      case 'H':
+        server->auth_header = strdup(optarg);
         break;
       case 'u':
-        info.uid = atoi(optarg);
+        info.uid = parse_int("uid", optarg);
         break;
       case 'g':
-        info.gid = atoi(optarg);
+        info.gid = parse_int("gid", optarg);
         break;
       case 's': {
         int sig = get_sig(optarg);
@@ -370,6 +419,9 @@ int main(int argc, char **argv) {
           return -1;
         }
       } break;
+      case 'w':
+        server->cwd = strdup(optarg);
+        break;
       case 'I':
         if (!strncmp(optarg, "~/", 2)) {
           const char *home = getenv("HOME");
@@ -380,13 +432,11 @@ int main(int argc, char **argv) {
         }
         struct stat st;
         if (stat(server->index, &st) == -1) {
-          fprintf(stderr, "Can not stat index.html: %s, error: %s\n",
-                  server->index, strerror(errno));
+          fprintf(stderr, "Can not stat index.html: %s, error: %s\n", server->index, strerror(errno));
           return -1;
         }
         if (S_ISDIR(st.st_mode)) {
-          fprintf(stderr, "Invalid index.html path: %s, is it a dir?\n",
-                  server->index);
+          fprintf(stderr, "Invalid index.html path: %s, is it a dir?\n", server->index);
           return -1;
         }
         break;
@@ -403,15 +453,15 @@ int main(int argc, char **argv) {
 #undef sc
       } break;
 #if LWS_LIBRARY_VERSION_NUMBER >= 4000000
-      case 'P':
-        if (atoi(optarg) <= 0) {
+      case 'P': {
+        int interval = parse_int("ping-interval", optarg);
+        if (interval < 0) {
           fprintf(stderr, "ttyd: invalid ping interval: %s\n", optarg);
           return -1;
         }
-        retry.secs_since_valid_ping = atoi(optarg);
-        retry.secs_since_valid_hangup = atoi(optarg) + 7;
-        info.retry_and_idle_policy = &retry;
-        break;
+        retry.secs_since_valid_ping = interval;
+        retry.secs_since_valid_hangup = interval + 7;
+      } break;
 #endif
       case '6':
         info.options &= ~(LWS_SERVER_OPTION_DISABLE_IPV6);
@@ -434,8 +484,7 @@ int main(int argc, char **argv) {
         break;
 #endif
       case 'T':
-        strncpy(server->terminal_type, optarg,
-                sizeof(server->terminal_type) - 1);
+        strncpy(server->terminal_type, optarg, sizeof(server->terminal_type) - 1);
         server->terminal_type[sizeof(server->terminal_type) - 1] = '\0';
         break;
       case '?':
@@ -443,26 +492,19 @@ int main(int argc, char **argv) {
       case 't':
         optind--;
         for (; optind < start && *argv[optind] != '-'; optind++) {
-          char *option = strdup(optarg);
+          char *option = optarg;
           char *key = strsep(&option, "=");
           if (key == NULL) {
-            fprintf(stderr,
-                    "ttyd: invalid client option: %s, format: key=value\n",
-                    optarg);
+            fprintf(stderr, "ttyd: invalid client option: %s, format: key=value\n", optarg);
             return -1;
           }
           char *value = strsep(&option, "=");
           if (value == NULL) {
-            fprintf(stderr,
-                    "ttyd: invalid client option: %s, format: key=value\n",
-                    optarg);
+            fprintf(stderr, "ttyd: invalid client option: %s, format: key=value\n", optarg);
             return -1;
           }
-          free(option);
           struct json_object *obj = json_tokener_parse(value);
-          json_object_object_add(
-              client_prefs, key,
-              obj != NULL ? obj : json_object_new_string(value));
+          json_object_object_add(client_prefs, key, obj != NULL ? obj : json_object_new_string(value));
         }
         break;
       default:
@@ -480,14 +522,14 @@ int main(int argc, char **argv) {
 
   lws_set_log_level(debug_level, NULL);
 
-#if LWS_LIBRARY_VERSION_MAJOR >= 2
   char server_hdr[128] = "";
-  sprintf(server_hdr, "ttyd/%s (libwebsockets/%s)", TTYD_VERSION,
-          LWS_LIBRARY_VERSION);
+  sprintf(server_hdr, "ttyd/%s (libwebsockets/%s)", TTYD_VERSION, LWS_LIBRARY_VERSION);
   info.server_string = server_hdr;
-#endif
-#if LWS_LIBRARY_VERSION_NUMBER >= 2001000 && LWS_LIBRARY_VERSION_NUMBER < 4000000
+
+#if LWS_LIBRARY_VERSION_NUMBER < 4000000
   info.ws_ping_pong_interval = 5;
+#else
+  info.retry_and_idle_policy = &retry;
 #endif
 
   if (strlen(iface) > 0) {
@@ -497,9 +539,11 @@ int main(int argc, char **argv) {
       info.options |= LWS_SERVER_OPTION_UNIX_SOCK;
       info.port = 0;  // warmcat/libwebsockets#1985
       strncpy(server->socket_path, info.iface, sizeof(server->socket_path) - 1);
+      if (strlen(socket_owner) > 0) {
+        info.unix_socket_perms = socket_owner;
+      }
 #else
-      fprintf(stderr,
-              "libwebsockets is not compiled with UNIX domain socket support");
+      fprintf(stderr, "libwebsockets is not compiled with UNIX domain socket support");
       return -1;
 #endif
     }
@@ -509,46 +553,32 @@ int main(int argc, char **argv) {
   if (ssl) {
     info.ssl_cert_filepath = cert_path;
     info.ssl_private_key_filepath = key_path;
-    if (strlen(ca_path) > 0)
+    #ifndef LWS_WITH_MBEDTLS
+    info.ssl_options_set = SSL_OP_NO_TLSv1 | SSL_OP_NO_TLSv1_1;
+    #endif
+    if (strlen(ca_path) > 0) {
       info.ssl_ca_filepath = ca_path;
       info.options |= LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT;
-#if LWS_LIBRARY_VERSION_MAJOR >= 2
-    info.options |= LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS;
-#endif
+    }
+    info.options |= LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT | LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS;
   }
 #endif
 
-  lwsl_notice("ttyd %s (libwebsockets %s)\n", TTYD_VERSION,
-              LWS_LIBRARY_VERSION);
-  lwsl_notice("tty configuration:\n");
-  if (server->credential != NULL)
-    lwsl_notice("  credential: %s\n", server->credential);
-  lwsl_notice("  start command: %s\n", server->command);
-  lwsl_notice("  close signal: %s (%d)\n", server->sig_name, server->sig_code);
-  lwsl_notice("  terminal type: %s\n", server->terminal_type);
-  if (endpoints.parent[0]) {
-    lwsl_notice("endpoints:\n");
-    lwsl_notice("  base-path: %s\n", endpoints.parent);
-    lwsl_notice("  index    : %s\n", endpoints.index);
-    lwsl_notice("  token    : %s\n", endpoints.token);
-    lwsl_notice("  websocket: %s\n", endpoints.ws);
-  }
-  if (server->check_origin) lwsl_notice("  check origin: true\n");
-  if (server->url_arg) lwsl_notice("  allow url arg: true\n");
-  if (server->readonly) lwsl_notice("  readonly: true\n");
-  if (server->max_clients > 0)
-    lwsl_notice("  max clients: %d\n", server->max_clients);
-  if (server->once) lwsl_notice("  once: true\n");
-  if (server->index != NULL) {
-    lwsl_notice("  custom index.html: %s\n", server->index);
+  lwsl_notice("ttyd %s (libwebsockets %s)\n", TTYD_VERSION, LWS_LIBRARY_VERSION);
+  print_config();
+
+  // lws custom header requires lower case name, and terminating :
+  if (server->auth_header != NULL) {
+    size_t auth_header_len = strlen(server->auth_header);
+    server->auth_header = xrealloc(server->auth_header, auth_header_len + 2);
+    strcat(server->auth_header + auth_header_len, ":");
+    lowercase(server->auth_header);
   }
 
-#if LWS_LIBRARY_VERSION_MAJOR >= 3
   void *foreign_loops[1];
   foreign_loops[0] = server->loop;
   info.foreign_loops = foreign_loops;
   info.options |= LWS_SERVER_OPTION_EXPLICIT_VHOSTS;
-#endif
 
   context = lws_create_context(&info);
   if (context == NULL) {
@@ -556,16 +586,12 @@ int main(int argc, char **argv) {
     return 1;
   }
 
-#if LWS_LIBRARY_VERSION_MAJOR >= 3
   struct lws_vhost *vhost = lws_create_vhost(context, &info);
   if (vhost == NULL) {
     lwsl_err("libwebsockets vhost creation failed\n");
     return 1;
   }
   int port = lws_get_vhost_listen_port(vhost);
-#else
-  int port = info.port;
-#endif
   lwsl_notice(" Listening on port: %d\n", port);
 
   if (browser) {
@@ -574,29 +600,20 @@ int main(int argc, char **argv) {
     open_uri(url);
   }
 
-#if LWS_LIBRARY_VERSION_MAJOR >= 3
+#define sig_count 2
   int sig_nums[] = {SIGINT, SIGTERM};
-  int ns = sizeof(sig_nums) / sizeof(sig_nums[0]);
-  uv_signal_t signals[ns];
-  for (int i = 0; i < ns; i++) {
+  uv_signal_t signals[sig_count];
+  for (int i = 0; i < sig_count; i++) {
     uv_signal_init(server->loop, &signals[i]);
     uv_signal_start(&signals[i], signal_cb, sig_nums[i]);
   }
 
   lws_service(context, 0);
 
-  for (int i = 0; i < ns; i++) {
+  for (int i = 0; i < sig_count; i++) {
     uv_signal_stop(&signals[i]);
   }
-#else
-#if LWS_LIBRARY_VERSION_MAJOR < 2
-  lws_uv_initloop(context, server->loop, signal_cb, 0);
-#else
-  lws_uv_sigint_cfg(context, 1, signal_cb);
-  lws_uv_initloop(context, server->loop, 0);
-#endif
-  lws_libuv_run(context, 0);
-#endif
+#undef sig_count
 
   lws_context_destroy(context);
 

src/server.h

@@ -1,7 +1,8 @@
+#include <libwebsockets.h>
 #include <stdbool.h>
 #include <uv.h>
 
-#include "queue.h"
+#include "pty.h"
 
 // client message
 #define INPUT '0'
@@ -15,8 +16,6 @@
 #define SET_WINDOW_TITLE '1'
 #define SET_PREFERENCES '2'
 
-#define MAX_READ_RETRY 2
-
 // url paths
 struct endpoints {
   char *ws;
@@ -30,8 +29,6 @@ extern struct lws_context *context;
 extern struct server *server;
 extern struct endpoints endpoints;
 
-typedef enum { STATE_INIT, STATE_PAUSE, STATE_KILL, STATE_EXIT } proc_state;
-
 struct pss_http {
   char path[128];
   char *buffer;
@@ -39,58 +36,51 @@ struct pss_http {
   size_t len;
 };
 
-struct pty_proc {
-  char **args;
-  int argc;
-
-  pid_t pid;
-  int status;
-  proc_state state;
-
-  int pty;
-  char *pty_buffer;
-  ssize_t pty_len;
-  int err_count;
-
-  uv_pipe_t pipe;
-
-  LIST_ENTRY(pty_proc) entry;
-};
-
 struct pss_tty {
   bool initialized;
   int initial_cmd_index;
   bool authenticated;
+  char user[30];
   char address[50];
-  char path[20];
+  char path[128];
+  char **args;
+  int argc;
 
   struct lws *wsi;
   char *buffer;
   size_t len;
 
-  struct pty_proc *proc;
+  pty_process *process;
+  pty_buf_t *pty_buf;
+
+  int lws_close_status;
 };
 
+typedef struct {
+  struct pss_tty *pss;
+  bool ws_closed;
+} pty_ctx_t;
+
 struct server {
   int client_count;        // client count
   char *prefs_json;        // client preferences
   char *credential;        // encoded basic auth credential
+  char *auth_header;       // header name used for auth proxy
   char *index;             // custom index.html
   char *command;           // full command line
   char **argv;             // command with arguments
   int argc;                // command + arguments count
+  char *cwd;               // working directory
   int sig_code;            // close signal
   char sig_name[20];       // human readable signal string
   bool url_arg;            // allow client to send cli arguments in URL
-  bool readonly;           // whether not allow clients to write to the TTY
+  bool writable;           // whether clients to write to the TTY
   bool check_origin;       // whether allow websocket connection from different origin
   int max_clients;         // maximum clients to support
   bool once;               // whether accept only one client and exit on disconnection
+  bool exit_no_conn;       // whether exit on all clients disconnection
   char socket_path[255];   // UNIX domain socket path
   char terminal_type[30];  // terminal type to report
 
   uv_loop_t *loop;         // the libuv event loop
-  uv_signal_t watcher;  // SIGCHLD watcher
-
-  LIST_HEAD(proc, pty_proc) procs;  // started process list
 };

src/terminal.c

@@ -1,53 +0,0 @@
-#include <errno.h>
-#include <fcntl.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-
-#if defined(__OpenBSD__) || defined(__APPLE__)
-#include <util.h>
-#elif defined(__FreeBSD__)
-#include <libutil.h>
-#else
-#include <pty.h>
-#endif
-
-#include "utils.h"
-
-pid_t pty_fork(int *pty, const char *file, char *const argv[], const char *term) {
-  pid_t pid = forkpty(pty, NULL, NULL, NULL);
-
-  if (pid < 0) {
-    return pid;
-  } else if (pid == 0) {
-    setenv("TERM", term, true);
-    int ret = execvp(file, argv);
-    if (ret < 0) {
-      perror("execvp failed\n");
-      _exit(-errno);
-    }
-  }
-
-  // set the file descriptor non blocking
-  int flags = fcntl(*pty, F_GETFL);
-  if (flags != -1) {
-    fcntl(*pty, F_SETFD, flags | O_NONBLOCK);
-  }
-  // set the file descriptor close-on-exec
-  fd_set_cloexec(*pty);
-
-  return pid;
-}
-
-int pty_resize(int pty, int cols, int rows) {
-  struct winsize size;
-
-  size.ws_col = (unsigned short)cols;
-  size.ws_row = (unsigned short)rows;
-  size.ws_xpixel = 0;
-  size.ws_ypixel = 0;
-
-  return ioctl(pty, TIOCSWINSZ, &size);
-}

src/terminal.h

@@ -1,8 +0,0 @@
-#ifndef TTYD_TERMINAL_H
-#define TTYD_TERMINAL_H
-
-int pty_fork(int *pty, const char *file, char *const argv[], const char *term);
-
-int pty_resize(int pty, int cols, int rows);
-
-#endif  // TTYD_TERMINAL_H

src/utils.c

@@ -7,26 +7,20 @@
 #include <string.h>
 
 #if defined(__linux__) && !defined(__ANDROID__)
-// https://github.com/karelzak/util-linux/blob/master/misc-utils/kill.c
 const char *sys_signame[NSIG] = {
-    "zero", "HUP",   "INT",  "QUIT", "ILL",  "TRAP", "ABRT", "UNUSED", "FPE",
-    "KILL", "USR1",  "SEGV", "USR2", "PIPE", "ALRM", "TERM", "STKFLT", "CHLD",
-    "CONT", "STOP",  "TSTP", "TTIN", "TTOU", "URG",  "XCPU", "XFSZ",   "VTALRM",
-    "PROF", "WINCH", "IO",   "PWR",  "SYS",  NULL};
+    "zero", "HUP",  "INT",  "QUIT", "ILL",    "TRAP",   "ABRT",  "UNUSED", "FPE",  "KILL", "USR1",
+    "SEGV", "USR2", "PIPE", "ALRM", "TERM",   "STKFLT", "CHLD",  "CONT",   "STOP", "TSTP", "TTIN",
+    "TTOU", "URG",  "XCPU", "XFSZ", "VTALRM", "PROF",   "WINCH", "IO",     "PWR",  "SYS",  NULL};
 #endif
 
 #if defined(_WIN32) || defined(__CYGWIN__)
-#include <shellapi.h>
 #include <windows.h>
-// https://github.com/mirror/newlib-cygwin/blob/master/winsup/cygwin/strsig.cc
-#ifndef NSIG
+#undef NSIG
 #define NSIG 33
-#endif
 const char *sys_signame[NSIG] = {
-    "zero", "HUP",   "INT",  "QUIT", "ILL",  "TRAP", "IOT",  "EMT",  "FPE",
-    "KILL", "BUS",   "SEGV", "SYS",  "PIPE", "ALRM", "TERM", "URG",  "STOP",
-    "TSTP", "CONT",  "CHLD", "TTIN", "TTOU", "IO",   "XCPU", "XFSZ", "VTALRM",
-    "PROF", "WINCH", "PWR",  "USR1", "USR2", NULL};
+    "zero", "HUP", "INT",  "QUIT", "ILL",    "TRAP", "IOT",   "EMT",  "FPE",  "KILL", "BUS",
+    "SEGV", "SYS", "PIPE", "ALRM", "TERM",   "URG",  "STOP",  "TSTP", "CONT", "CHLD", "TTIN",
+    "TTOU", "IO",  "XCPU", "XFSZ", "VTALRM", "PROF", "WINCH", "PWR",  "USR1", "USR2", NULL};
 #endif
 
 void *xmalloc(size_t size) {
@@ -43,12 +37,20 @@ void *xrealloc(void *p, size_t size) {
   return p;
 }
 
-char *uppercase(char *str) {
-  int i = 0;
-  do {
-    str[i] = (char)toupper(str[i]);
-  } while (str[i++] != '\0');
-  return str;
+char *uppercase(char *s) {
+  while(*s) {
+    *s = (char)toupper((int)*s);
+    s++;
+  }
+  return s;
+}
+
+char *lowercase(char *s) {
+  while(*s) {
+    *s = (char)tolower((int)*s);
+    s++;
+  }
+  return s;
 }
 
 bool endswith(const char *str, const char *suffix) {
@@ -58,8 +60,7 @@ bool endswith(const char *str, const char *suffix) {
 }
 
 int get_sig_name(int sig, char *buf, size_t len) {
-  int n =
-      snprintf(buf, len, "SIG%s", sig < NSIG ? sys_signame[sig] : "unknown");
+  int n = snprintf(buf, len, "SIG%s", sig < NSIG ? sys_signame[sig] : "unknown");
   uppercase(buf);
   return n;
 }
@@ -67,27 +68,19 @@ int get_sig_name(int sig, char *buf, size_t len) {
 int get_sig(const char *sig_name) {
   for (int sig = 1; sig < NSIG; sig++) {
     const char *name = sys_signame[sig];
-    if (name != NULL && (strcasecmp(name, sig_name) == 0 ||
-                         strcasecmp(name, sig_name + 3) == 0))
+    if (name != NULL && (strcasecmp(name, sig_name) == 0 || strcasecmp(name, sig_name + 3) == 0))
       return sig;
   }
   return atoi(sig_name);
 }
 
-bool fd_set_cloexec(const int fd) {
-  int flags = fcntl(fd, F_GETFD);
-  if (flags < 0) return false;
-  return (flags & FD_CLOEXEC) == 0 ||
-         fcntl(fd, F_SETFD, flags | FD_CLOEXEC) != -1;
-}
-
 int open_uri(char *uri) {
 #ifdef __APPLE__
   char command[256];
   sprintf(command, "open %s > /dev/null 2>&1", uri);
   return system(command);
 #elif defined(_WIN32) || defined(__CYGWIN__)
-  return ShellExecute(0, 0, uri, 0, 0, SW_SHOW) > 32 ? 0 : 1;
+  return ShellExecute(0, 0, uri, 0, 0, SW_SHOW) > (HINSTANCE)32 ? 0 : 1;
 #else
   // check if X server is running
   if (system("xset -q > /dev/null 2>&1")) return 1;
@@ -97,28 +90,74 @@ int open_uri(char *uri) {
 #endif
 }
 
-// https://github.com/darkk/redsocks/blob/master/base64.c
-char *base64_encode(const unsigned char *buffer, size_t length) {
-  static const char b64[] =
-      "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-  char *ret, *dst;
-  unsigned i_bits = 0;
-  int i_shift = 0;
-  int bytes_remaining = (int)length;
-
-  ret = dst = xmalloc((size_t)(((length + 2) / 3 * 4) + 1));
-  while (bytes_remaining) {
-    i_bits = (i_bits << 8) + *buffer++;
-    bytes_remaining--;
-    i_shift += 8;
-
-    do {
-      *dst++ = b64[(i_bits << 6 >> i_shift) & 0x3f];
-      i_shift -= 6;
-    } while (i_shift > 6 || (bytes_remaining == 0 && i_shift > 0));
-  }
-  while ((dst - ret) & 3) *dst++ = '=';
-  *dst = '\0';
-
-  return ret;
+#ifdef _WIN32
+char *strsep(char **sp, char *sep) {
+  char *p, *s;
+  if (sp == NULL || *sp == NULL || **sp == '\0') return (NULL);
+  s = *sp;
+  p = s + strcspn(s, sep);
+  if (*p != '\0') *p++ = '\0';
+  *sp = p;
+  return s;
 }
+
+const char *quote_arg(const char *arg) {
+  int len = 0, n = 0;
+  int force_quotes = 0;
+  char *q, *d;
+  const char *p = arg;
+  if (!*p) force_quotes = 1;
+  while (*p) {
+    if (isspace(*p) || *p == '*' || *p == '?' || *p == '{' || *p == '\'')
+      force_quotes = 1;
+    else if (*p == '"')
+      n++;
+    else if (*p == '\\') {
+      int count = 0;
+      while (*p == '\\') {
+        count++;
+        p++;
+        len++;
+      }
+      if (*p == '"' || !*p) n += count * 2 + 1;
+      continue;
+    }
+    len++;
+    p++;
+  }
+  if (!force_quotes && n == 0) return arg;
+
+  d = q = xmalloc(len + n + 3);
+  *d++ = '"';
+  while (*arg) {
+    if (*arg == '"')
+      *d++ = '\\';
+    else if (*arg == '\\') {
+      int count = 0;
+      while (*arg == '\\') {
+        count++;
+        *d++ = *arg++;
+      }
+      if (*arg == '"' || !*arg) {
+        while (count-- > 0) *d++ = '\\';
+        if (!*arg) break;
+        *d++ = '\\';
+      }
+    }
+    *d++ = *arg++;
+  }
+  *d++ = '"';
+  *d++ = '\0';
+  return q;
+}
+
+void print_error(char *func) {
+  LPVOID buffer;
+  DWORD dw = GetLastError();
+  FormatMessage(
+      FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+      NULL, dw, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&buffer, 0, NULL);
+  wprintf(L"== %s failed with error %d: %s", func, dw, buffer);
+  LocalFree(buffer);
+}
+#endif

src/utils.h

@@ -14,7 +14,10 @@ void *xmalloc(size_t size);
 void *xrealloc(void *p, size_t size);
 
 // Convert a string to upper case
-char *uppercase(char *str);
+char *uppercase(char *s);
+
+// Convert a string to lower case
+char *lowercase(char *s);
 
 // Check whether str ends with suffix
 bool endswith(const char *str, const char *suffix);
@@ -25,13 +28,12 @@ int get_sig_name(int sig, char *buf, size_t len);
 // Get signal code from string like SIGHUP
 int get_sig(const char *sig_name);
 
-// Set the given file descriptor close-on-exec
-bool fd_set_cloexec(const int fd);
-
 // Open uri with the default application of system
 int open_uri(char *uri);
 
-// Encode text to base64, the caller should free the returned string
-char *base64_encode(const unsigned char *buffer, size_t length);
-
+#ifdef _WIN32
+char *strsep(char **sp, char *sep);
+const char *quote_arg(const char *arg);
+void print_error(char *func);
+#endif
 #endif  // TTYD_UTIL_H