Adding upstream version 1.1.0+debian.

Signed-off-by: Daniel Baumann <daniel@debian.org>
2025-02-09 08:30:48 +01:00 · 2025-02-09 08:30:48 +01:00 · 8d1b12293d
commit 8d1b12293d
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+# Engine for capturing, parsing and replaying DNS
+
+[![Build Status](https://travis-ci.com/DNS-OARC/dnsjit.svg?branch=develop)](https://travis-ci.com/DNS-OARC/dnsjit) [![Total alerts](https://img.shields.io/lgtm/alerts/g/DNS-OARC/dnsjit.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/DNS-OARC/dnsjit/alerts/) [![Bugs](https://sonarcloud.io/api/project_badges/measure?project=dns-oarc%3Adnsjit&metric=bugs)](https://sonarcloud.io/dashboard?id=dns-oarc%3Adnsjit) [![Security Rating](https://sonarcloud.io/api/project_badges/measure?project=dns-oarc%3Adnsjit&metric=security_rating)](https://sonarcloud.io/dashboard?id=dns-oarc%3Adnsjit)
+
+**dnsjit** is a combination of parts taken from **dsc**, **dnscap**, **drool**,
+and put together around Lua to create a script-based engine for easy
+capturing, parsing and statistics gathering of DNS messages while also
+providing facilities for replaying DNS traffic.
+
+One of the core functionality that **dnsjit** brings is to tie together C
+and Lua modules through a receiver/producer interface.
+This allows creation of custom chains of functionality to meet various
+requirements.
+Another core functionality is the ability to parse and process DNS messages
+even if the messages are non-compliant with the DNS standards.
+
+The following Lua module categories exists:
+- `dnsjit.core`: Core modules for handling things like logging, DNS messages and receiver/receive functionality.
+- `dnsjit.lib`: Various Lua libraries or C library bindings.
+- `dnsjit.input`: Input modules used to read DNS messages in various ways.
+- `dnsjit.filter`: Filter modules to process or manipulate DNS messages.
+- `dnsjit.output`: Output modules used to display DNS message, export to various formats or replay them against other targets.
+
+See each category's man-page for more information.
+
+More information may be found here:
+- https://www.dns-oarc.net/tools/dnsjit
+
+Issues should be reported here:
+- https://github.com/DNS-OARC/dnsjit/issues
+
+General support and discussion:
+- Mattermost: https://chat.dns-oarc.net/community/channels/oarc-software
+
+## Packages
+
+https://dev.dns-oarc.net/packages
+
+Packages for Debian, Ubuntu, EPEL, SLE, openSUSE can be found in the
+PRE-RELEASE channel. Some distributions are limited to certain
+architectures because of LuaJIT.
+
+## Dependencies
+
+- [libluajit](http://luajit.org/) 2.0+ (or compatible alternatives)
+- [libpcap](http://www.tcpdump.org/)
+- [liblmdb](https://github.com/LMDB/lmdb)
+- [libck](https://github.com/concurrencykit/ck)
+- [libgnutls](https://www.gnutls.org/)
+- [libuv](http://libuv.org/)
+- [libnghttp2](https://www.nghttp2.org/)
+- [luajit](http://luajit.org/) (for building)
+- automake/autoconf/libtool/pkg-config (for building)
+
+Debian/Ubuntu: `apt-get install libluajit-5.1-dev libpcap-dev luajit liblmdb-dev libck-dev libgnutls28-dev libuv1-dev libnghttp2-dev`
+
+CentOS: `yum install luajit-devel libpcap-devel lmdb-devel ck-devel gnutls-devel libuv-devel libnghttp2-devel`
+
+FreeBSD: `pkg install luajit libpcap lmdb gnutls concurrencykit libuv libnghttp2`
+
+OpenBSD: `pkg_add luajit gnutls libuv nghttp2` + manual install of libpcap, liblmdb and libck
+
+On some version of SUSE Linux Enterprise moonjit is used as an compatible
+alternative to luajit.
+
+## Build
+
+```shell
+git clone https://github.com/DNS-OARC/dnsjit
+cd dnsjit
+sh autogen.sh
+./configure
+make
+```
+
+## Documentation
+
+Most documentation exists in man-pages and you do not have to install to
+access them, after building you can do:
+
+```shell
+man src/dnsjit.1
+man src/dnsjit.core.3
+man src/dnsjit.lib.3
+man src/dnsjit.input.3
+man src/dnsjit.filter.3
+man src/dnsjit.output.3
+```
+
+## Usage
+
+Run a Lua script:
+
+```shell
+dnsjit file.lua ...
+```
+
+Shebang-style:
+```lua
+#!/usr/bin/env dnsjit
+...
+```
+
+## Example
+
+Following example display the DNS ID found in queries.
+
+```lua
+require("dnsjit.core.objects")
+local input = require("dnsjit.input.pcap").new()
+local layer = require("dnsjit.filter.layer").new()
+local dns = require("dnsjit.core.object.dns").new()
+
+input:open_offline(arg[2])
+layer:producer(input)
+local producer, ctx = layer:produce()
+
+while true do
+    local object = producer(ctx)
+    if object == nil then break end
+    if object:type() == "payload" then
+        dns.obj_prev = object
+        if dns:parse_header() == 0 then
+            print(dns.id)
+        end
+    end
+end
+```
+
+See more examples in the [examples](https://github.com/DNS-OARC/dnsjit/tree/develop/examples) directory.
+
+## Copyright
+
+Copyright (c) 2018-2021, OARC, Inc.
+
+All rights reserved.
+
+```
+This file is part of dnsjit.
+
+dnsjit is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+dnsjit is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with dnsjit.  If not, see <http://www.gnu.org/licenses/>.
+```