X-Git-Url: http://git.samba.org/?p=metze%2Fwireshark%2Fwip.git;a=blobdiff_plain;f=randpkt.c;h=4b6644fa68ef2a74c9ef050306b7a5d65008bbcf;hp=da17a8aa4cf77ba5bf39badfe0bf9fd9cc1e4961;hb=a34ed6fcffef2c2ba625373b4729f0e2f292cd33;hpb=309e86246e8fb5859a5cfa20eb09a5848fa0724f diff --git a/randpkt.c b/randpkt.c index da17a8aa4c..4b6644fa68 100644 --- a/randpkt.c +++ b/randpkt.c @@ -4,20 +4,20 @@ * Creates random packet traces. Useful for debugging sniffers by testing * assumptions about the veracity of the data found in the packet. * - * $Id: randpkt.c,v 1.13 2002/02/24 01:26:42 guy Exp $ + * $Id$ * * Copyright (C) 1999 by Gilbert Ramirez - * + * * This program 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 2 * of the License, or (at your option) any later version. - * + * * This program 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. @@ -27,6 +27,12 @@ #include "config.h" #endif +#ifdef HAVE_GETOPT_H +#include +#else +#include "wsgetopt.h" +#endif + #ifdef HAVE_UNISTD_H #include #endif @@ -49,28 +55,38 @@ /* Types of produceable packets */ enum { PKT_ARP, + PKT_BGP, + PKT_BVLC, PKT_DNS, PKT_ETHERNET, PKT_FDDI, + PKT_GIOP, PKT_ICMP, PKT_IP, PKT_LLC, + PKT_M2M, + PKT_MEGACO, PKT_NBNS, + PKT_NCP2222, + PKT_SCTP, PKT_SYSLOG, PKT_TCP, + PKT_TDS, PKT_TR, PKT_UDP, - PKT_BVLC, - PKT_NCP2222 + PKT_USB, + PKT_USB_LINUX }; typedef struct { - char *abbrev; - char *longname; - int produceable_type; - guint8 *sample_buffer; - int sample_wtap_encap; - int sample_length; + const char *abbrev; + const char *longname; + int produceable_type; + int sample_wtap_encap; + guint8 *sample_buffer; + int sample_length; + guint8 *pseudo_buffer; + int pseudo_length; } pkt_example; /* Ethernet, indicating ARP */ @@ -95,7 +111,7 @@ guint8 pkt_dns[] = { 0x0a, 0x01, 0x01, 0x63, 0x05, 0xe8, 0x00, 0x35, - 0x00, 0x00, 0x2a, 0xb9, + 0xff, 0xff, 0x2a, 0xb9, 0x30 }; @@ -129,7 +145,15 @@ guint8 pkt_llc[] = { 0xc4, 0x67 }; -/* Ethernet+IP+UP, indicating NBNS */ +/* Ethernet, indicating WiMAX M2M */ +guint8 pkt_m2m[] = { + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x00, 0x00, + 0x32, 0x25, 0x0f, 0xff, + 0x08, 0xf0 +}; + +/* Ethernet+IP+UDP, indicating NBNS */ guint8 pkt_nbns[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01, 0x01, @@ -230,49 +254,232 @@ guint8 pkt_ncp2222[] = { 0x22 }; +/* Ethernet+IP+TCP, indicating GIOP */ +guint8 pkt_giop[] = { + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x01, + 0x08, 0x00, + + 0x45, 0x00, 0x00, 0xa6, + 0x00, 0x2f, 0x40, 0x00, + 0x40, 0x06, 0x3c, 0x21, + 0x7f, 0x00, 0x00, 0x01, + 0x7f, 0x00, 0x00, 0x01, + + 0x30, 0x39, 0x04, 0x05, + 0xac, 0x02, 0x1e, 0x69, + 0xab, 0x74, 0xab, 0x64, + 0x80, 0x18, 0x79, 0x60, + 0xc4, 0xb8, 0x00, 0x00, + 0x01, 0x01, 0x08, 0x0a, + 0x00, 0x00, 0x48, 0xf5, + 0x00, 0x00, 0x48, 0xf5, + + 0x47, 0x49, 0x4f, 0x50, + 0x01, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x30, + 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x01, + 0x01 +}; + +/* Ethernet+IP+TCP, indicating BGP */ +guint8 pkt_bgp[] = { + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0x01, 0x01, + 0x01, 0x01, 0x01, 0x01, + 0x08, 0x00, + + 0x45, 0x00, 0x00, 0xa6, + 0x00, 0x2f, 0x40, 0x00, + 0x40, 0x06, 0x3c, 0x21, + 0x7f, 0x00, 0x00, 0x01, + 0x7f, 0x00, 0x00, 0x01, + + 0x30, 0x39, 0x00, 0xb3, + 0xac, 0x02, 0x1e, 0x69, + 0xab, 0x74, 0xab, 0x64, + 0x80, 0x18, 0x79, 0x60, + 0xc4, 0xb8, 0x00, 0x00, + 0x01, 0x01, 0x08, 0x0a, + 0x00, 0x00, 0x48, 0xf5, + 0x00, 0x00, 0x48, 0xf5, + + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, +}; + +/* Ethernet+IP+TCP, indicating TDS NetLib */ +guint8 pkt_tds[] = { + 0x00, 0x50, 0x8b, 0x0d, + 0x7a, 0xed, 0x00, 0x08, + 0xa3, 0x98, 0x39, 0x81, + 0x08, 0x00, + + 0x45, 0x00, 0x03, 0x8d, + 0x90, 0xd4, 0x40, 0x00, + 0x7c, 0x06, 0xc3, 0x1b, + 0xac, 0x14, 0x02, 0x22, + 0x0a, 0xc2, 0xee, 0x82, + + 0x05, 0x99, 0x08, 0xf8, + 0xff, 0x4e, 0x85, 0x46, + 0xa2, 0xb4, 0x42, 0xaa, + 0x50, 0x18, 0x3c, 0x28, + 0x0f, 0xda, 0x00, 0x00, +}; + +/* Ethernet+IP, indicating SCTP */ +guint8 pkt_sctp[] = { + 0x00, 0xa0, 0x80, 0x00, + 0x5e, 0x46, 0x08, 0x00, + 0x03, 0x4a, 0x00, 0x35, + 0x08, 0x00, + + 0x45, 0x00, 0x00, 0x7c, + 0x14, 0x1c, 0x00, 0x00, + 0x3b, 0x84, 0x4a, 0x54, + 0x0a, 0x1c, 0x06, 0x2b, + 0x0a, 0x1c, 0x06, 0x2c, +}; + + +/* Ethernet+IP+SCTP, indicating MEGACO */ +guint8 pkt_megaco[] = { + 0x00, 0xa0, 0x80, 0x00, + 0x5e, 0x46, 0x08, 0x00, + 0x03, 0x4a, 0x00, 0x35, + 0x08, 0x00, + + 0x45, 0x00, 0x00, 0x7c, + 0x14, 0x1c, 0x00, 0x00, + 0x3b, 0x84, 0x4a, 0x54, + 0x0a, 0x1c, 0x06, 0x2b, + 0x0a, 0x1c, 0x06, 0x2c, + + 0x40, 0x00, 0x0b, 0x80, + 0x00, 0x01, 0x6f, 0x0a, + 0x6d, 0xb0, 0x18, 0x82, + 0x00, 0x03, 0x00, 0x5b, + 0x28, 0x02, 0x43, 0x45, + 0x00, 0x00, 0xa0, 0xbd, + 0x00, 0x00, 0x00, 0x07, +}; + /* This little data table drives the whole program */ pkt_example examples[] = { { "arp", "Address Resolution Protocol", - PKT_ARP, pkt_arp, WTAP_ENCAP_ETHERNET, array_length(pkt_arp) }, + PKT_ARP, WTAP_ENCAP_ETHERNET, + pkt_arp, array_length(pkt_arp), + NULL, 0 }, + + { "bgp", "Border Gateway Protocol", + PKT_BGP, WTAP_ENCAP_ETHERNET, + pkt_bgp, array_length(pkt_bgp), + NULL, 0 }, + + { "bvlc", "BACnet Virtual Link Control", + PKT_BVLC, WTAP_ENCAP_ETHERNET, + pkt_bvlc, array_length(pkt_bvlc), + NULL, 0 }, { "dns", "Domain Name Service", - PKT_DNS, pkt_dns, WTAP_ENCAP_ETHERNET, array_length(pkt_dns) }, + PKT_DNS, WTAP_ENCAP_ETHERNET, + pkt_dns, array_length(pkt_dns), + NULL, 0 }, { "eth", "Ethernet", - PKT_ETHERNET, NULL, WTAP_ENCAP_ETHERNET, 0 }, + PKT_ETHERNET, WTAP_ENCAP_ETHERNET, + NULL, 0, + NULL, 0 }, { "fddi", "Fiber Distributed Data Interface", - PKT_FDDI, NULL, WTAP_ENCAP_FDDI, 0 }, + PKT_FDDI, WTAP_ENCAP_FDDI, + NULL, 0, + NULL, 0 }, + + { "giop", "General Inter-ORB Protocol", + PKT_GIOP, WTAP_ENCAP_ETHERNET, + pkt_giop, array_length(pkt_giop), + NULL, 0 }, { "icmp", "Internet Control Message Protocol", - PKT_ICMP, pkt_icmp, WTAP_ENCAP_ETHERNET, array_length(pkt_icmp) }, + PKT_ICMP, WTAP_ENCAP_ETHERNET, + pkt_icmp, array_length(pkt_icmp), + NULL, 0 }, { "ip", "Internet Protocol", - PKT_IP, pkt_ip, WTAP_ENCAP_ETHERNET, array_length(pkt_ip) }, + PKT_IP, WTAP_ENCAP_ETHERNET, + pkt_ip, array_length(pkt_ip), + NULL, 0 }, { "llc", "Logical Link Control", - PKT_LLC, pkt_llc, WTAP_ENCAP_TOKEN_RING, array_length(pkt_llc) }, + PKT_LLC, WTAP_ENCAP_TOKEN_RING, + pkt_llc, array_length(pkt_llc), + NULL, 0 }, + + { "m2m", "WiMAX M2M Encapsulation Protocol", + PKT_M2M, WTAP_ENCAP_ETHERNET, + pkt_m2m, array_length(pkt_m2m), + NULL, 0 }, + + { "megaco", "MEGACO", + PKT_MEGACO, WTAP_ENCAP_ETHERNET, + pkt_megaco, array_length(pkt_megaco), + NULL, 0 }, { "nbns", "NetBIOS-over-TCP Name Service", - PKT_NBNS, pkt_nbns, WTAP_ENCAP_ETHERNET, array_length(pkt_nbns) }, + PKT_NBNS, WTAP_ENCAP_ETHERNET, + pkt_nbns, array_length(pkt_nbns), + NULL, 0 }, + + { "ncp2222", "NetWare Core Protocol", + PKT_NCP2222, WTAP_ENCAP_TOKEN_RING, + pkt_ncp2222, array_length(pkt_ncp2222), + NULL, 0 }, + + { "sctp", "Stream Control Transmission Protocol", + PKT_SCTP, WTAP_ENCAP_ETHERNET, + pkt_sctp, array_length(pkt_sctp), + NULL, 0 }, { "syslog", "Syslog message", - PKT_SYSLOG, pkt_syslog, WTAP_ENCAP_ETHERNET, array_length(pkt_syslog) }, + PKT_SYSLOG, WTAP_ENCAP_ETHERNET, + pkt_syslog, array_length(pkt_syslog), + NULL, 0 }, + + { "tds", "TDS NetLib", + PKT_TDS, WTAP_ENCAP_ETHERNET, + pkt_tds, array_length(pkt_tds), + NULL, 0 }, { "tcp", "Transmission Control Protocol", - PKT_TCP, pkt_tcp, WTAP_ENCAP_TOKEN_RING, array_length(pkt_tcp) }, + PKT_TCP, WTAP_ENCAP_TOKEN_RING, + pkt_tcp, array_length(pkt_tcp), + NULL, 0 }, { "tr", "Token-Ring", - PKT_TR, NULL, WTAP_ENCAP_TOKEN_RING, 0 }, + PKT_TR, WTAP_ENCAP_TOKEN_RING, + NULL, 0, + NULL, 0 }, { "udp", "User Datagram Protocol", - PKT_UDP, pkt_udp, WTAP_ENCAP_ETHERNET, array_length(pkt_udp) }, + PKT_UDP, WTAP_ENCAP_ETHERNET, + pkt_udp, array_length(pkt_udp), + NULL, 0 }, - { "bvlc", "BACnet Virtual Link Control", - PKT_BVLC, pkt_bvlc, WTAP_ENCAP_ETHERNET, array_length(pkt_bvlc) }, + { "usb", "Universal Serial Bus", + PKT_USB, WTAP_ENCAP_USB, + NULL, 0, + NULL, 0 }, - { "ncp2222", "NetWare Core Protocol", - PKT_NCP2222, pkt_ncp2222, WTAP_ENCAP_TOKEN_RING, array_length(pkt_ncp2222) }, + { "usb-linux", "Universal Serial Bus with Linux specific header", + PKT_USB_LINUX, WTAP_ENCAP_USB_LINUX, + NULL, 0, + NULL, 0 }, }; @@ -295,22 +502,20 @@ main(int argc, char **argv) guint8 buffer[65536]; int opt; - extern char *optarg; - extern int optind; - int produce_count = 1000; /* number of pkts to produce */ int produce_type = PKT_ETHERNET; char *produce_filename = NULL; int produce_max_bytes = 5000; pkt_example *example; - while ((opt = getopt(argc, argv, "b:c:t:")) != -1) { + while ((opt = getopt(argc, argv, "b:c:ht:")) != -1) { switch (opt) { case 'b': /* max bytes */ produce_max_bytes = atoi(optarg); if (produce_max_bytes > 65536) { - printf("Max bytes is 65536\n"); - exit(0); + fprintf(stderr, + "randpkt: Max bytes is 65536\n"); + exit(1); } break; @@ -322,6 +527,7 @@ main(int argc, char **argv) produce_type = parse_type(optarg); break; + case 'h': default: usage(); break; @@ -338,25 +544,40 @@ main(int argc, char **argv) example = find_example(produce_type); - pkthdr.ts.tv_sec = 0; - pkthdr.ts.tv_usec = 0; - pkthdr.pkt_encap = example->sample_wtap_encap; dump = wtap_dump_open(produce_filename, WTAP_FILE_PCAP, - example->sample_wtap_encap, produce_max_bytes, &err); + example->sample_wtap_encap, produce_max_bytes, FALSE /* compressed */, &err); + if (!dump) { + fprintf(stderr, + "randpkt: Error writing to %s\n", produce_filename); + exit(2); + } seed(); /* reduce max_bytes by # of bytes already in sample */ if (produce_max_bytes <= example->sample_length) { - printf("Sample packet length is %d, which is greater than or equal to\n", example->sample_length); - printf("your requested max_bytes value of %d\n", produce_max_bytes); - exit(0); + fprintf(stderr, + "randpkt: Sample packet length is %d, which is greater than or equal to\n", + example->sample_length); + fprintf(stderr, "your requested max_bytes value of %d\n", + produce_max_bytes); + exit(1); } else { produce_max_bytes -= example->sample_length; } + memset(&pkthdr, 0, sizeof(pkthdr)); + memset(&ps_header, 0, sizeof(ps_header)); + memset(buffer, 0, sizeof(buffer)); + + pkthdr.pkt_encap = example->sample_wtap_encap; + + /* Load the sample pseudoheader into our pseudoheader buffer */ + if (example->pseudo_buffer) + memcpy(&ps_header, example->pseudo_buffer, example->pseudo_length); + /* Load the sample into our buffer */ if (example->sample_buffer) memcpy(&buffer[0], example->sample_buffer, example->sample_length); @@ -374,10 +595,20 @@ main(int argc, char **argv) pkthdr.caplen = len_this_pkt; pkthdr.len = len_this_pkt; - pkthdr.ts.tv_sec = i; /* just for variety */ + pkthdr.ts.secs = i; /* just for variety */ + + for (j = example->pseudo_length; j < (int) sizeof(ps_header); j++) { + ((guint8*)&ps_header)[j] = (rand() % 0x100); + } - for (j = example->sample_length; j < len_random; j++) { - buffer[j] = (rand() % 0x100); + for (j = example->sample_length; j < len_this_pkt; j++) { + /* Add format strings here and there */ + if ((int) (100.0*rand()/(RAND_MAX+1.0)) < 3 && j < (len_random - 3)) { + memcpy(&buffer[j], "%s", 3); + j += 2; + } else { + buffer[j] = (rand() % 0x100); + } } wtap_dump(dump, &pkthdr, &ps_header, &buffer[0], &err); @@ -424,7 +655,7 @@ int parse_type(char *string) } /* Complain */ - printf("Type %s not known.\n", string); + fprintf(stderr, "randpkt: Type %s not known.\n", string); exit(1); } @@ -441,7 +672,9 @@ pkt_example* find_example(int type) } } - printf("Internal error. Type %d has no entry in examples table.\n", type); + fprintf(stderr, + "randpkt: Internal error. Type %d has no entry in examples table.\n", + type); exit(1); } @@ -450,24 +683,50 @@ void seed(void) { unsigned int randomness; - -#if defined(linux) - /* Okay, I should use #ifdef HAVE_DEV_RANDOM, but this is a quick hack */ + time_t now; +#ifndef _WIN32 int fd; - - fd = open("/dev/random", O_RDONLY); - if (fd < 0) { - printf("Could not open /dev/random for reading: %s\n", strerror(errno)); - exit(0); + ssize_t ret; + +#define RANDOM_DEV "/dev/urandom" + + /* + * Assume it's at least worth trying /dev/urandom on UN*X. + * If it doesn't exist, fall back on time(). + * + * XXX - Use CryptGenRandom on Windows? + */ + fd = open(RANDOM_DEV, O_RDONLY); + if (fd == -1) { + if (errno != ENOENT) { + fprintf(stderr, + "randpkt: Could not open " RANDOM_DEV " for reading: %s\n", + strerror(errno)); + exit(2); + } + goto fallback; } - read(fd, &randomness, sizeof(randomness)); -#else - time_t now; + ret = read(fd, &randomness, sizeof randomness); + if (ret == -1) { + fprintf(stderr, + "randpkt: Could not read from " RANDOM_DEV ": %s\n", + strerror(errno)); + exit(2); + } + if ((size_t)ret != sizeof randomness) { + fprintf(stderr, + "randpkt: Tried to read %lu bytes from " RANDOM_DEV ", got %ld\n", + (unsigned long)sizeof randomness, (long)ret); + exit(2); + } + srand(randomness); + return; +fallback: +#endif now = time(NULL); randomness = (unsigned int) now; -#endif srand(randomness); }