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c92f1580df
...
d8eb38dd16
8 changed files with 342 additions and 454 deletions
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@ -33,9 +33,6 @@ target_link_libraries(igmpgen ${LIBNET_LIBRARY})
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# Installation instructions
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install(TARGETS igmpgen DESTINATION bin)
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# Install the man page
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install(FILES misc/igmpgen.man.1 DESTINATION share/man/man1 RENAME igmpgen.1)
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# Include CPack for packaging
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include(InstallRequiredSystemLibraries)
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set(CPACK_RESOURCE_FILE_LICENSE "${CMAKE_CURRENT_SOURCE_DIR}/LICENSE.txt")
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24
Makefile
24
Makefile
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@ -1,24 +0,0 @@
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BUILD_DIR=_build
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all: build
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$(BUILD_DIR):
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mkdir -p $(BUILD_DIR)
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cmake -S . -B _build -D CMAKE_BUILD_TYPE=Debug
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build: | $(BUILD_DIR)
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cmake --build _build
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debug: | $(BUILD_DIR)
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gdb _build/igmpgen
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run: | $(BUILD_DIR)
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_build/igmpgen
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install: | $(BUILD_DIR)
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cmake --install _build
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package: | $(BUILD_DIR)
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make -C _build package
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5
build.sh
Executable file
5
build.sh
Executable file
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@ -0,0 +1,5 @@
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#!/bin/sh
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mkdir -p _build
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cmake -S . -B _build -D CMAKE_BUILD_TYPE=Debug
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cmake --build _build
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@ -1,86 +0,0 @@
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.TH IGMPGEN 1 "Your Date Here" "Version Number Here" "IGMPGEN Manual"
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.SH NAME
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igmpgen \- IGMP packet generator
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.SH SYNOPSIS
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.B igmpgen
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[options]
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.SH DESCRIPTION
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.PP
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The
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.B igmpgen
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utility is used to generate IGMP (Internet Group Management Protocol) network packets.
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.SH OPTIONS
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.TP
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.B \-i <interface>
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Specify the network interface (e.g., eth0).
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.TP
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.B \-t <type>
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Specify the IGMP packet type and version (e.g., 1.query).
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.TP
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.B \-g <group>
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Specify the destination IGMP group (e.g., 224.0.0.1).
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.TP
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.B \-s <source>
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Specify the source IP and port (e.g., 192.168.1.1:1234).
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.TP
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.B \-d <destination>
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Specify the destination IP and port (e.g., 224.0.0.2:5678).
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.TP
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.B \-n <number>
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Specify delay between packets in seconds (optional).
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.SH AVAILABLE IGMP PACKET TYPES
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.PP
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The following IGMP packet types are available:
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.PP
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\- 1.query
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.br
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\- 1.report
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.br
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\- 1.dvmrp
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.br
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\- 2.query
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.br
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\- 2.report
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.br
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\- 2.leave
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.br
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\- 3.report
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.SH EXAMPLES
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.PP
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To generate a 1.query IGMP packet on eth0:
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.PP
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.nf
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\fB$ igmpgen -i eth0 -t 1.query\fR
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.fi
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.SH AUTHOR
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.PP
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Written by Your Name.
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.SH "SEE ALSO"
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.PP
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Related commands or documentation.
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.SH BUGS
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.PP
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No known bugs.
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.SH LICENSE
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.PP
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Specify license information or refer to the LICENSE file.
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.SH "REPORTING BUGS"
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.PP
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Provide information on how to report bugs.
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3
run.sh
Executable file
3
run.sh
Executable file
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@ -0,0 +1,3 @@
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#!/bin/sh
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gdb _build/igmpgen
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@ -29,3 +29,4 @@ typedef struct {
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extern ipg_igmp_extra_t g_igmp_pkts[];
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#endif /* IGP_TYPES_H */
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94
src/main.c
94
src/main.c
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@ -32,9 +32,7 @@ ipg_igmp_extra_t g_igmp_pkts[] = {
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void usage(char *);
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ipg_igmp_extra_t *igmp_packet_type_find(u_int8_t igmp_version,
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char *igmp_request)
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{
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ipg_igmp_extra_t * igmp_packet_type_find(u_int8_t igmp_version, char *igmp_request) {
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ipg_igmp_extra_t *pkt_ptr;
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pkt_ptr = g_igmp_pkts;
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@ -87,8 +85,10 @@ int main(int argc, char **argv)
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printf("Detected options:\n");
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/* Parsing command line */
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while ((c = getopt(argc, argv, "i:t:g:d:s:")) != EOF) {
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switch (c) {
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while((c = getopt(argc, argv, "i:t:g:d:s:")) != EOF)
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{
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switch (c)
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{
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case 'i':
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printf(" Net interface = [%s]\n",optarg);
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device = optarg;
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@ -105,8 +105,7 @@ int main(int argc, char **argv)
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pkt_ptr = igmp_packet_type_find(igmp_version, cp);
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if (!pkt_ptr) {
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printf("ERROR: Packet type %d.%s not found!\n",
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igmp_version, cp);
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printf("ERROR: Packet type %d.%s not found!\n", igmp_version, cp);
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usage(argv[0]);
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exit(1);
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}
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@ -115,8 +114,7 @@ int main(int argc, char **argv)
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igmp_code = pkt_ptr->igmp_code;
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ip_dst_str = pkt_ptr->igmp_dst;
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igmp_override = pkt_ptr->group_override_dst;
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printf(" Packet = [%s] version [%d]\n",
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pkt_ptr->igmp_tag, igmp_version);
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printf(" Packet = [%s] version [%d]\n", pkt_ptr->igmp_tag, igmp_version);
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break;
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case 'g':
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@ -137,27 +135,27 @@ int main(int argc, char **argv)
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* just the IP address, and cp points to the port.
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*/
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if ((cp = strrchr(optarg, ':'))) {
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if ((cp = strrchr(optarg, ':')))
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{
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*cp++ = 0;
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dst_prt = (u_short)atoi(cp);
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} else {
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dst_prt = 0;
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}
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ip_dst_str = strdup(optarg);
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printf(" Destination = ip [%s] port [%d]\n",
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ip_dst_str, dst_prt);
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printf(" Destination = ip [%s] port [%d]\n", ip_dst_str, dst_prt);
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break;
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case 's':
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if ((cp = strrchr(optarg, ':'))) {
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if ((cp = strrchr(optarg, ':')))
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{
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*cp++ = 0;
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src_prt = (u_short)atoi(cp);
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} else {
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src_prt = 0;
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}
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ip_src_str = strdup(optarg);
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printf(" Source = ip [%s] port [%d]\n", ip_src_str,
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src_prt);
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printf(" Source = ip [%s] port [%d]\n", ip_src_str, src_prt);
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break;
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default:
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@ -166,13 +164,15 @@ int main(int argc, char **argv)
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}
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}
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if (!igmp_group_str) {
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if (!igmp_group_str)
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{
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usage(argv[0]);
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fprintf(stderr, "ERROR: missing destination IGMP group\n");
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exit(EXIT_FAILURE);
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}
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if (!device) {
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if (!device)
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{
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usage(argv[0]);
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fprintf(stderr, "ERROR: missing device\n");
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exit(EXIT_FAILURE);
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@ -198,7 +198,8 @@ int main(int argc, char **argv)
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/* Packet construction: IGMP */
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printf(" Building IGMP content...\n");
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ptag = libnet_build_igmp(igmp_type, // IGMP type
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ptag = libnet_build_igmp(
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igmp_type, // IGMP type
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igmp_code, // IGMP code
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0, // checksum
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0, // group address
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@ -208,8 +209,7 @@ int main(int argc, char **argv)
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0 // ptag
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);
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if (ptag == -1) {
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fprintf(stderr, "Error building IGMP header: %s\n",
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libnet_geterror(netcontext));
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fprintf(stderr, "Error building IGMP header: %s\n", libnet_geterror(netcontext));
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libnet_destroy(netcontext);
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exit(EXIT_FAILURE);
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}
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@ -218,8 +218,7 @@ int main(int argc, char **argv)
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/* Send packet */
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if (libnet_write(netcontext) == -1) {
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fprintf(stderr, "Error sending packet: %s\n",
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libnet_geterror(netcontext));
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fprintf(stderr, "Error sending packet: %s\n", libnet_geterror(netcontext));
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} else {
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printf("Packet sent successfully.\n");
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}
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@ -256,24 +255,22 @@ int main(int argc, char **argv)
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}
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if (ip_src_test
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&& !(ip_src =
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libnet_name2addr4(netcontext, ip_src_str, LIBNET_RESOLVE))) {
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&& !(ip_src = libnet_name2addr4(netcontext, ip_src_str, LIBNET_RESOLVE)))
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{
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fprintf(stderr,"Bad source IP address: %s\n", ip_src_str);
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fprintf(stderr,"%s\n", libnet_geterror(netcontext));
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exit(1);
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}
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if (ip_dst_test
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&& !(ip_dst =
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libnet_name2addr4(netcontext, ip_dst_str, LIBNET_RESOLVE))) {
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&& !(ip_dst = libnet_name2addr4(netcontext, ip_dst_str, LIBNET_RESOLVE)))
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{
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fprintf(stderr,"Bad destination IP address: %s\n", ip_dst_str);
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fprintf(stderr,"%s\n", libnet_geterror(netcontext));
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exit(1);
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}
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if (igmp_group_test
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&& !(igmp_group =
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libnet_name2addr4(netcontext, igmp_group_str, LIBNET_RESOLVE)))
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if (igmp_group_test && !(igmp_group = libnet_name2addr4(netcontext, igmp_group_str, LIBNET_RESOLVE)))
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{
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fprintf(stderr,"Bad group IP address: %s\n", optarg);
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fprintf(stderr,"%s\n", libnet_geterror(netcontext));
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@ -298,7 +295,8 @@ int main(int argc, char **argv)
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}
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*/
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ptag = libnet_build_igmp(igmp_type, // IGMP type
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ptag = libnet_build_igmp(
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igmp_type, // IGMP type
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igmp_code, // IGMP code or TTL
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0, // checksum
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htonl(igmp_group), // ip addr
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@ -306,26 +304,26 @@ int main(int argc, char **argv)
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0, // Packet payload length
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netcontext, // Ptr to libnet context
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0); // Build a new packet header
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if (ptag < 0) {
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fprintf(stderr,
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"Error while building IGMP header data (err %d)\n",
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ptag);
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if (ptag < 0)
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{
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fprintf(stderr, "Error while building IGMP header data (err %d)\n", ptag);
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fprintf(stderr,"%s\n", libnet_geterror(netcontext));
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exit(1);
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}
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u_int8_t ipopt[2];
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ipopt[0] = IPOPT_RA;
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ipopt[1] = 4;
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ptag = libnet_build_ipv4_options(ipopt, // options
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ptag = libnet_build_ipv4_options(
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ipopt, // options
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2, // options_s (length of option string)
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netcontext, // libnet context
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0 // ptag
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);
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if (ptag < 0) {
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fprintf(stderr,
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"Error while building IPv4 options data (err %d)\n",
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ptag);
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if (ptag < 0)
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{
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fprintf(stderr, "Error while building IPv4 options data (err %d)\n", ptag);
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}
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ptag = libnet_build_ipv4(LIBNET_IPV4_H + LIBNET_IGMP_H, // pkg size + data
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@ -342,10 +340,9 @@ int main(int argc, char **argv)
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netcontext, // libnet context
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0 // build a new header
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);
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if (ptag < 0) {
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fprintf(stderr,
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"Error while building IPv4 header data (err %d)\n",
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ptag);
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if (ptag < 0)
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{
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fprintf(stderr, "Error while building IPv4 header data (err %d)\n", ptag);
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fprintf(stderr,"%s\n", libnet_geterror(netcontext));
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exit(1);
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}
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@ -353,12 +350,13 @@ int main(int argc, char **argv)
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printf(" done\n"); //IGMP content
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c = libnet_write(netcontext);
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if (c < 0) {
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if (c < 0)
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{
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fprintf(stderr,"%s\n", libnet_geterror(netcontext));
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} else {
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printf
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("construction and injection completed, wrote all %d bytes\n",
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c);
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}
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else
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{
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printf("construction and injection completed, wrote all %d bytes\n", c);
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}
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/*
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22
src/usage.c
22
src/usage.c
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@ -11,26 +11,20 @@ void usage(const char *name)
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fprintf(stderr, "Usage: %s [options]\n", basename(name));
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fprintf(stderr, "\nOptions:\n");
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fprintf(stderr,
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" -i <interface> Specify the network interface (e.g., eth0)\n");
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fprintf(stderr,
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" -t <type> Specify the IGMP packet type and version (e.g., 1.query)\n");
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fprintf(stderr,
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" -g <group> Specify the destination IGMP group (e.g., 224.0.0.1)\n");
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fprintf(stderr,
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" -s <source> Specify the source IP and port (e.g., 192.168.1.1:1234)\n");
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fprintf(stderr,
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" -d <destination> Specify the destination IP and port (e.g., 224.0.0.2:5678)\n");
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fprintf(stderr,
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" -n <number> Specify delay between packets in seconds (optional)\n");
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fprintf(stderr, " -i <interface> Specify the network interface (e.g., eth0)\n");
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fprintf(stderr, " -t <type> Specify the IGMP packet type and version (e.g., 1.query)\n");
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fprintf(stderr, " -g <group> Specify the destination IGMP group (e.g., 224.0.0.1)\n");
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fprintf(stderr, " -s <source> Specify the source IP and port (e.g., 192.168.1.1:1234)\n");
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fprintf(stderr, " -d <destination> Specify the destination IP and port (e.g., 224.0.0.2:5678)\n");
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fprintf(stderr, " -n <number> Specify delay between packets in seconds (optional)\n");
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fprintf(stderr, "\nAvailable IGMP packet types:\n");
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pkt_ptr = g_igmp_pkts;
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while(pkt_ptr->igmp_version || pkt_ptr->igmp_tag){
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fprintf(stderr, " - %d.%s\n", pkt_ptr->igmp_version,
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pkt_ptr->igmp_tag);
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fprintf(stderr," - %d.%s\n", pkt_ptr->igmp_version, pkt_ptr->igmp_tag);
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pkt_ptr++;
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}
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fprintf(stderr, "\n");
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}
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