Adding upstream version 2.0.0+debian.
Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
parent
65eb8bc08a
commit
1cf0d30d41
GPG key ID:
FBB4F0E80A80222F
191 changed files with 48816 additions and 0 deletions
24
plugins/anonaes128/Makefile.am
Normal file
24
plugins/anonaes128/Makefile.am
Normal file
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@ -0,0 +1,24 @@
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MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
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CLEANFILES = *.gcda *.gcno *.gcov
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AM_CFLAGS = -I$(srcdir) \
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-I$(top_srcdir)/src \
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-I$(top_srcdir)/isc \
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$(SECCOMPFLAGS) $(libcrypto_CFLAGS)
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pkglib_LTLIBRARIES = anonaes128.la
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anonaes128_la_SOURCES = anonaes128.c
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anonaes128_la_LDFLAGS = -module -avoid-version $(libcrypto_LIBS)
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TESTS = test1.sh test2.sh test3.sh test4.sh
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EXTRA_DIST = $(TESTS) test1.gold test2.gold test3.gold
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CLEANFILES += test1.out test2.out test3.out test3.pcap.20181127.155200.414188 \
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test4.tmp
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if ENABLE_GCOV
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gcov-local:
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for src in $(anonaes128_la_SOURCES); do \
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gcov -o .libs -l -r -s "$(srcdir)" "$$src"; \
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done
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endif
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344
plugins/anonaes128/anonaes128.c
Normal file
344
plugins/anonaes128/anonaes128.c
Normal file
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@ -0,0 +1,344 @@
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/*
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* Copyright (c) 2018-2021, OARC, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "dnscap_common.h"
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#if defined(HAVE_LIBCRYPTO) && defined(HAVE_OPENSSL_CONF_H) && defined(HAVE_OPENSSL_ERR_H) && defined(HAVE_OPENSSL_EVP_H)
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#include <openssl/conf.h>
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#include <openssl/evp.h>
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#include <openssl/err.h>
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#define USE_OPENSSL 1
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#endif
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static set_iaddr_t anonaes128_set_iaddr = 0;
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static logerr_t* logerr;
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static int only_clients = 0, only_servers = 0, dns_port = 53, encrypt_v4 = 0, decrypt = 0;
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static unsigned char key[16];
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static unsigned char iv[16];
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#ifdef USE_OPENSSL
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static EVP_CIPHER_CTX* ctx = 0;
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#endif
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enum plugin_type anonaes128_type()
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{
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return plugin_filter;
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}
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void usage(const char* msg)
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{
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fprintf(stderr, "anonaes128.so usage error: %s\n", msg);
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exit(1);
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}
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void anonaes128_usage()
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{
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fprintf(stderr,
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"\nanonaes128.so options:\n"
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"\t-? print these instructions and exit\n"
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"\t-k <key> A 16 character long key\n"
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"\t-K <file> Read the 16 first bytes from file and use as key\n"
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"\t-i <key> A 16 character long Initialisation Vector (IV)\n"
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"\t-I <file> Read the 16 first bytes from file and use as IV\n"
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"\t-D Decrypt IPv6 addresses\n"
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"\t-c Only en/de-crypt clients (port != 53)\n"
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"\t-s Only en/de-crypt servers (port == 53)\n"
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"\t-p <port> Set port for -c/-s, default 53\n"
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"\t-4 Encrypt IPv4 addresses, not default or recommended\n");
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}
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void anonaes128_extension(int ext, void* arg)
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{
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switch (ext) {
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case DNSCAP_EXT_SET_IADDR:
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anonaes128_set_iaddr = (set_iaddr_t)arg;
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break;
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}
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}
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void anonaes128_getopt(int* argc, char** argv[])
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{
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int c, got_key = 0, got_iv = 0;
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unsigned long ul;
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char* p;
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while ((c = getopt(*argc, *argv, "?k:K:i:I:Dcsp:4")) != EOF) {
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switch (c) {
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case 'k':
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if (strlen(optarg) != 16) {
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usage("key must be 16 characters long");
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}
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memcpy(key, optarg, 16);
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got_key = 1;
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break;
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case 'K': {
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int fd;
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ssize_t r;
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if ((fd = open(optarg, O_RDONLY)) < 0) {
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perror("open()");
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usage("unable to open key file");
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}
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if ((r = read(fd, key, 16)) < 0) {
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perror("read()");
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usage("unable to read from key file");
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}
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if (r != 16) {
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usage("unable to read 16 bytes from key file");
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}
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close(fd);
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got_key = 1;
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break;
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}
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case 'i':
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if (strlen(optarg) != 16) {
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usage("IV must be 16 characters long");
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}
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memcpy(iv, optarg, 16);
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got_iv = 1;
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break;
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case 'I': {
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int fd;
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ssize_t r;
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if ((fd = open(optarg, O_RDONLY)) < 0) {
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perror("open()");
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usage("unable to open IV file");
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}
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if ((r = read(fd, iv, 16)) < 0) {
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perror("read()");
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usage("unable to read from IV file");
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}
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if (r != 16) {
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usage("unable to read 16 bytes from IV file");
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}
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close(fd);
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got_iv = 1;
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break;
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}
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case 'D':
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decrypt = 1;
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break;
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case 'c':
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only_clients = 1;
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break;
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case 's':
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only_servers = 1;
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break;
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case 'p':
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ul = strtoul(optarg, &p, 0);
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if (*p != '\0' || ul < 1U || ul > 65535U)
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usage("port must be an integer 1..65535");
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dns_port = (unsigned)ul;
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break;
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case '4':
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encrypt_v4 = 1;
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break;
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case '?':
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anonaes128_usage();
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if (!optopt || optopt == '?') {
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exit(0);
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}
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// fallthrough
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default:
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exit(1);
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}
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}
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if (!got_key || !got_iv) {
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usage("must have key (-k/-K) and IV (-i/-I)");
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}
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if (decrypt && encrypt_v4) {
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usage("decryption (-D) can not be done for IPv4 addresses (-4)");
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}
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#ifdef USE_OPENSSL
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if (!(ctx = EVP_CIPHER_CTX_new())) {
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usage("unable to create openssl cipher context");
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}
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if (!EVP_CipherInit_ex(ctx, EVP_aes_128_ecb(), NULL, key, iv, decrypt ? 0 : 1)) {
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unsigned long e = ERR_get_error();
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fprintf(stderr, "%s:%s:%s", ERR_lib_error_string(e), ERR_func_error_string(e), ERR_reason_error_string(e));
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usage("unable to initialize AES128 cipher");
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}
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EVP_CIPHER_CTX_set_padding(ctx, 0);
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#else
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usage("no openssl support built in, can't encrypt IP addresses");
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#endif
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if (only_clients && only_servers) {
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usage("-c and -s options are mutually exclusive");
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}
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}
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int anonaes128_start(logerr_t* a_logerr)
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{
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logerr = a_logerr;
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return 0;
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}
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void anonaes128_stop()
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{
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#ifdef USE_OPENSSL
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EVP_CIPHER_CTX_free(ctx);
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ctx = 0;
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#endif
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}
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int anonaes128_open(my_bpftimeval ts)
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{
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return 0;
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}
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int anonaes128_close(my_bpftimeval ts)
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{
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return 0;
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}
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int anonaes128_filter(const char* descr, iaddr* from, iaddr* to, uint8_t proto, unsigned flags,
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unsigned sport, unsigned dport, my_bpftimeval ts,
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const u_char* pkt_copy, const unsigned olen,
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const u_char* payload, const unsigned payloadlen)
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{
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#ifdef USE_OPENSSL
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unsigned char outbuf[16 + EVP_MAX_BLOCK_LENGTH];
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int outlen = 0;
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for (;;) {
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if (only_clients && sport == dns_port) {
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from = 0;
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break;
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}
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if (only_servers && sport != dns_port) {
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from = 0;
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break;
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}
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switch (from->af) {
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case AF_INET6:
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if (!EVP_CipherUpdate(ctx, outbuf, &outlen, (unsigned char*)&from->u.a6, 16)) {
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logerr("anonaes128.so: error en/de-crypting IP address: %s", ERR_reason_error_string(ERR_get_error()));
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exit(1);
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}
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if (outlen != 16) {
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logerr("anonaes128.so: error en/de-crypted output is not 16 bytes");
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exit(1);
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}
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memcpy(&from->u.a6, outbuf, 16);
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break;
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case AF_INET:
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if (encrypt_v4) {
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memcpy(((uint8_t*)&from->u.a6) + 4, &from->u.a4, 4);
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memcpy(((uint8_t*)&from->u.a6) + 8, &from->u.a4, 4);
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memcpy(((uint8_t*)&from->u.a6) + 12, &from->u.a4, 4);
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if (!EVP_CipherUpdate(ctx, outbuf, &outlen, (unsigned char*)&from->u.a6, 16)) {
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logerr("anonaes128.so: error en/de-crypting IP address: %s", ERR_reason_error_string(ERR_get_error()));
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exit(1);
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}
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if (outlen != 16) {
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logerr("anonaes128.so: error en/de-crypted output is not 16 bytes");
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exit(1);
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}
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memcpy(&from->u.a4, outbuf, 4);
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break;
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}
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default:
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from = 0;
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break;
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}
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break;
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}
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for (;;) {
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if (only_clients && dport == dns_port) {
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to = 0;
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break;
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}
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if (only_servers && dport != dns_port) {
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to = 0;
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break;
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}
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switch (to->af) {
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case AF_INET6:
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if (!EVP_CipherUpdate(ctx, outbuf, &outlen, (unsigned char*)&to->u.a6, 16)) {
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logerr("anonaes128.so: error en/de-crypting IP address: %s", ERR_reason_error_string(ERR_get_error()));
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exit(1);
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}
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if (outlen != 16) {
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logerr("anonaes128.so: error en/de-crypted output is not 16 bytes");
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exit(1);
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}
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memcpy(&to->u.a6, outbuf, 16);
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break;
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case AF_INET:
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if (encrypt_v4) {
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memcpy(((uint8_t*)&to->u.a6) + 4, &to->u.a4, 4);
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memcpy(((uint8_t*)&to->u.a6) + 8, &to->u.a4, 4);
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memcpy(((uint8_t*)&to->u.a6) + 12, &to->u.a4, 4);
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if (!EVP_CipherUpdate(ctx, outbuf, &outlen, (unsigned char*)&to->u.a6, 16)) {
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logerr("anonaes128.so: error en/de-crypting IP address: %s", ERR_reason_error_string(ERR_get_error()));
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exit(1);
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}
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if (outlen != 16) {
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logerr("anonaes128.so: error en/de-crypted output is not 16 bytes");
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exit(1);
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}
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memcpy(&to->u.a4, outbuf, 4);
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break;
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}
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default:
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to = 0;
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break;
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}
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break;
|
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}
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|
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if (anonaes128_set_iaddr && (from || to)) {
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anonaes128_set_iaddr(from, to);
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}
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#endif
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return 0;
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}
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2146
plugins/anonaes128/test1.gold
Normal file
2146
plugins/anonaes128/test1.gold
Normal file
File diff suppressed because it is too large
Load diff
26
plugins/anonaes128/test1.sh
Executable file
26
plugins/anonaes128/test1.sh
Executable file
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@ -0,0 +1,26 @@
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#!/bin/sh -xe
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|
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plugin=`find . -name 'anonaes128.so' | head -n 1`
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if [ -z "$plugin" ]; then
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echo "Unable to find the anonaes128 plugin"
|
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exit 1
|
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fi
|
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|
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ln -fs "$srcdir/../../src/test/dns.pcap" dns.pcap-dist
|
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|
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! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" 2>test1.out
|
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! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -k "some 16-byte key" 2>>test1.out
|
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! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -i "some 16-byte key" 2>>test1.out
|
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../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -4 -k "some 16-byte key" -i "some 16-byte key" 2>>test1.out
|
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../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -4 -k "some 16-byte key" -i "some 16-byte key" -c 2>>test1.out
|
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../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -4 -k "some 16-byte key" -i "some 16-byte key" -s 2>>test1.out
|
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! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -4 -k "some 16-byte key" -i "some 16-byte key" -c -s 2>>test1.out
|
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|
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osrel=`uname -s`
|
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if [ "$osrel" = "OpenBSD" ]; then
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mv test1.out test1.out.old
|
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grep -v "^dnscap.*WARNING.*symbol.*relink" test1.out.old > test1.out
|
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rm test1.out.old
|
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fi
|
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|
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diff test1.out "$srcdir/test1.gold"
|
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33
plugins/anonaes128/test2.gold
Normal file
33
plugins/anonaes128/test2.gold
Normal file
|
|
@ -0,0 +1,33 @@
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[87] 2018-11-27 15:52:00.414188 [#0 dns6.pcap-dist 4095] \
|
||||
[4a92:a508:d567:5c16:d07:5236:4b51:417e].51972 [6733:3377:d5f:662b:299f:6a97:c7fe:d424].53 \
|
||||
dns QUERY,NOERROR,51420,rd|ad \
|
||||
1 google.com.,IN,A 0 0 \
|
||||
1 .,4096,4096,0,edns0[len=0,UDP=4096,ver=0,rcode=0,DO=0,z=0]
|
||||
[103] 2018-11-27 15:52:00.428453 [#1 dns6.pcap-dist 4095] \
|
||||
[6733:3377:d5f:662b:299f:6a97:c7fe:d424].53 [4a92:a508:d567:5c16:d07:5236:4b51:417e].51972 \
|
||||
dns QUERY,NOERROR,51420,qr|rd|ra \
|
||||
1 google.com.,IN,A \
|
||||
1 google.com.,IN,A,299,172.217.20.46 0 \
|
||||
1 .,512,512,0,edns0[len=0,UDP=512,ver=0,rcode=0,DO=0,z=0]
|
||||
[87] 2018-11-27 15:52:00.414188 [#0 dns6.pcap-dist 4095] \
|
||||
[4a92:a508:d567:5c16:d07:5236:4b51:417e].51972 [2001:4860:4860::8888].53 \
|
||||
dns QUERY,NOERROR,51420,rd|ad \
|
||||
1 google.com.,IN,A 0 0 \
|
||||
1 .,4096,4096,0,edns0[len=0,UDP=4096,ver=0,rcode=0,DO=0,z=0]
|
||||
[103] 2018-11-27 15:52:00.428453 [#1 dns6.pcap-dist 4095] \
|
||||
[2001:4860:4860::8888].53 [4a92:a508:d567:5c16:d07:5236:4b51:417e].51972 \
|
||||
dns QUERY,NOERROR,51420,qr|rd|ra \
|
||||
1 google.com.,IN,A \
|
||||
1 google.com.,IN,A,299,172.217.20.46 0 \
|
||||
1 .,512,512,0,edns0[len=0,UDP=512,ver=0,rcode=0,DO=0,z=0]
|
||||
[87] 2018-11-27 15:52:00.414188 [#0 dns6.pcap-dist 4095] \
|
||||
[2a01:3f0:0:57::245].51972 [6733:3377:d5f:662b:299f:6a97:c7fe:d424].53 \
|
||||
dns QUERY,NOERROR,51420,rd|ad \
|
||||
1 google.com.,IN,A 0 0 \
|
||||
1 .,4096,4096,0,edns0[len=0,UDP=4096,ver=0,rcode=0,DO=0,z=0]
|
||||
[103] 2018-11-27 15:52:00.428453 [#1 dns6.pcap-dist 4095] \
|
||||
[6733:3377:d5f:662b:299f:6a97:c7fe:d424].53 [2a01:3f0:0:57::245].51972 \
|
||||
dns QUERY,NOERROR,51420,qr|rd|ra \
|
||||
1 google.com.,IN,A \
|
||||
1 google.com.,IN,A,299,172.217.20.46 0 \
|
||||
1 .,512,512,0,edns0[len=0,UDP=512,ver=0,rcode=0,DO=0,z=0]
|
||||
30
plugins/anonaes128/test2.sh
Executable file
30
plugins/anonaes128/test2.sh
Executable file
|
|
@ -0,0 +1,30 @@
|
|||
#!/bin/sh -xe
|
||||
|
||||
plugin=`find . -name 'anonaes128.so' | head -n 1`
|
||||
if [ -z "$plugin" ]; then
|
||||
echo "Unable to find the anonaes128 plugin"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
ln -fs "$srcdir/../../src/test/dns6.pcap" dns6.pcap-dist
|
||||
|
||||
../../src/dnscap -r dns6.pcap-dist -g -P "$plugin" -k "some 16-byte key" -i "some 16-byte key" 2>test2.out
|
||||
../../src/dnscap -r dns6.pcap-dist -g -P "$plugin" -k "some 16-byte key" -i "some 16-byte key" -c 2>>test2.out
|
||||
../../src/dnscap -r dns6.pcap-dist -g -P "$plugin" -k "some 16-byte key" -i "some 16-byte key" -s 2>>test2.out
|
||||
|
||||
osrel=`uname -s`
|
||||
if [ "$osrel" = "OpenBSD" ]; then
|
||||
mv test2.out test2.out.old
|
||||
grep -v "^dnscap.*WARNING.*symbol.*relink" test2.out.old > test2.out
|
||||
rm test2.out.old
|
||||
fi
|
||||
|
||||
# TODO: Remove when #133 is fixed
|
||||
cat test2.out | \
|
||||
sed 's%,CLASS4096,OPT,%,4096,4096,%' | \
|
||||
sed 's%,CLASS512,OPT,%,512,512,%' | \
|
||||
sed 's%,41,41,0,edns0\[len=0,UDP=4096,%,4096,4096,0,edns0[len=0,UDP=4096,%' | \
|
||||
sed 's%,41,41,0,edns0\[len=0,UDP=512,%,512,512,0,edns0[len=0,UDP=512,%' >test2.new
|
||||
mv test2.new test2.out
|
||||
|
||||
diff test2.out "$srcdir/test2.gold"
|
||||
11
plugins/anonaes128/test3.gold
Normal file
11
plugins/anonaes128/test3.gold
Normal file
|
|
@ -0,0 +1,11 @@
|
|||
[87] 2018-11-27 15:52:00.414188 [#0 test3.pcap.20181127.155200.414188 4095] \
|
||||
[2a01:3f0:0:57::245].51972 [2001:4860:4860::8888].53 \
|
||||
dns QUERY,NOERROR,51420,rd|ad \
|
||||
1 google.com.,IN,A 0 0 \
|
||||
1 .,4096,4096,0,edns0[len=0,UDP=4096,ver=0,rcode=0,DO=0,z=0]
|
||||
[103] 2018-11-27 15:52:00.428453 [#1 test3.pcap.20181127.155200.414188 4095] \
|
||||
[2001:4860:4860::8888].53 [2a01:3f0:0:57::245].51972 \
|
||||
dns QUERY,NOERROR,51420,qr|rd|ra \
|
||||
1 google.com.,IN,A \
|
||||
1 google.com.,IN,A,299,172.217.20.46 0 \
|
||||
1 .,512,512,0,edns0[len=0,UDP=512,ver=0,rcode=0,DO=0,z=0]
|
||||
29
plugins/anonaes128/test3.sh
Executable file
29
plugins/anonaes128/test3.sh
Executable file
|
|
@ -0,0 +1,29 @@
|
|||
#!/bin/sh -xe
|
||||
|
||||
plugin=`find . -name 'anonaes128.so' | head -n 1`
|
||||
if [ -z "$plugin" ]; then
|
||||
echo "Unable to find the anonaes128 plugin"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
ln -fs "$srcdir/../../src/test/dns6.pcap" dns6.pcap-dist
|
||||
|
||||
../../src/dnscap -r dns6.pcap-dist -w test3.pcap -P "$plugin" -k "some 16-byte key" -i "some 16-byte key" 2>test3.out
|
||||
../../src/dnscap -r test3.pcap.20181127.155200.414188 -g -P "$plugin" -D -k "some 16-byte key" -i "some 16-byte key" 2>>test3.out
|
||||
|
||||
osrel=`uname -s`
|
||||
if [ "$osrel" = "OpenBSD" ]; then
|
||||
mv test3.out test3.out.old
|
||||
grep -v "^dnscap.*WARNING.*symbol.*relink" test3.out.old > test3.out
|
||||
rm test3.out.old
|
||||
fi
|
||||
|
||||
# TODO: Remove when #133 is fixed
|
||||
cat test3.out | \
|
||||
sed 's%,CLASS4096,OPT,%,4096,4096,%' | \
|
||||
sed 's%,CLASS512,OPT,%,512,512,%' | \
|
||||
sed 's%,41,41,0,edns0\[len=0,UDP=4096,%,4096,4096,0,edns0[len=0,UDP=4096,%' | \
|
||||
sed 's%,41,41,0,edns0\[len=0,UDP=512,%,512,512,0,edns0[len=0,UDP=512,%' >test3.new
|
||||
mv test3.new test3.out
|
||||
|
||||
diff test3.out "$srcdir/test3.gold"
|
||||
24
plugins/anonaes128/test4.sh
Executable file
24
plugins/anonaes128/test4.sh
Executable file
|
|
@ -0,0 +1,24 @@
|
|||
#!/bin/sh -xe
|
||||
|
||||
plugin=`find . -name 'anonaes128.so' | head -n 1`
|
||||
if [ -z "$plugin" ]; then
|
||||
echo "Unable to find the anonaes128 plugin"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
ln -fs "$srcdir/../../src/test/dns.pcap" dns.pcap-dist
|
||||
|
||||
../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -?
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -X
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -k tooshort
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -i tooshort
|
||||
../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -4 -K "$srcdir/test4.sh" -I "$srcdir/test4.sh"
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -K does_not_exist
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -I does_not_exist
|
||||
rm -f test4.tmp
|
||||
touch test4.tmp
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -K test4.tmp
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -I test4.tmp
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -p 0
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -p 1
|
||||
! ../../src/dnscap -r dns.pcap-dist -g -P "$plugin" -D -4 -k "some 16-byte key" -i "some 16-byte key"
|
||||
Loading…
Add table
Add a link
Reference in a new issue