* 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 1.19 2004/02/23 14:37:59 jmayer Exp $
- *
* Copyright (C) 1999 by Gilbert Ramirez <gram@alumni.rice.edu>
*
* This program is free software; you can redistribute it and/or
*
* 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
+#include <config.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
#endif
-#ifdef NEED_GETOPT_H
-#include "getopt.h"
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
+#ifndef HAVE_GETOPT_LONG
+#include "wsutil/wsgetopt.h"
#endif
#ifdef HAVE_FCNTL_H
#include <string.h>
#include <glib.h>
#include "wiretap/wtap.h"
+#include "wsutil/file_util.h"
+#include <wsutil/ws_diag_control.h>
+
+#ifdef _WIN32
+#include <wsutil/unicode-utils.h>
+#endif /* _WIN32 */
#define array_length(x) (sizeof x / sizeof x[0])
/* 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_GIOP,
- PKT_BGP,
- PKT_TDS
+ 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 */
0x0a, 0x01, 0x01, 0x63,
0x05, 0xe8, 0x00, 0x35,
- 0x00, 0x00, 0x2a, 0xb9,
+ 0xff, 0xff, 0x2a, 0xb9,
0x30
};
0xc4, 0x67
};
+/* 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,
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) },
-
- { "bvlc", "BACnet Virtual Link Control",
- PKT_BVLC, pkt_bvlc, WTAP_ENCAP_ETHERNET, array_length(pkt_bvlc) },
+ PKT_UDP, WTAP_ENCAP_ETHERNET,
+ pkt_udp, array_length(pkt_udp),
+ NULL, 0 },
- { "ncp2222", "NetWare Core Protocol",
- PKT_NCP2222, pkt_ncp2222, WTAP_ENCAP_TOKEN_RING, array_length(pkt_ncp2222) },
+ { "usb", "Universal Serial Bus",
+ PKT_USB, WTAP_ENCAP_USB,
+ NULL, 0,
+ NULL, 0 },
- { "giop", "General Inter-ORB Protocol",
- PKT_GIOP, pkt_giop, WTAP_ENCAP_ETHERNET, array_length(pkt_giop) },
-
- { "bgp", "Border Gateway Protocol",
- PKT_BGP, pkt_bgp, WTAP_ENCAP_ETHERNET, array_length(pkt_bgp) },
-
- { "tds", "TDS NetLib",
- PKT_TDS, pkt_tds, WTAP_ENCAP_ETHERNET, array_length(pkt_tds) },
+ { "usb-linux", "Universal Serial Bus with Linux specific header",
+ PKT_USB_LINUX, WTAP_ENCAP_USB_LINUX,
+ NULL, 0,
+ NULL, 0 },
};
static int parse_type(char *string);
-static void usage(void);
+static void usage(gboolean is_error);
static void seed(void);
static pkt_example* find_example(int type);
wtap_dumper *dump;
struct wtap_pkthdr pkthdr;
- union wtap_pseudo_header ps_header;
+ union wtap_pseudo_header *ps_header = &pkthdr.pseudo_header;
int i, j, len_this_pkt, len_random, err;
+ gchar *err_info;
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) {
+DIAG_OFF(cast-qual)
+ static const struct option long_options[] = {
+ {(char *)"help", no_argument, NULL, 'h'},
+ {0, 0, 0, 0 }
+ };
+DIAG_ON(cast-qual)
+
+#ifdef _WIN32
+ arg_list_utf_16to8(argc, argv);
+ create_app_running_mutex();
+#endif /* _WIN32 */
+
+ while ((opt = getopt_long(argc, argv, "b:c:ht:", long_options, NULL)) != -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;
produce_type = parse_type(optarg);
break;
+ case 'h':
+ usage(FALSE);
+ break;
default:
- usage();
+ usage(TRUE);
break;
}
}
produce_filename = argv[optind];
}
else {
- usage();
+ usage(TRUE);
}
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);
+ dump = wtap_dump_open(produce_filename, WTAP_FILE_TYPE_SUBTYPE_PCAP,
+ 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(buffer, 0, sizeof(buffer));
+
+ pkthdr.rec_type = REC_TYPE_PACKET;
+ pkthdr.presence_flags = WTAP_HAS_TS;
+ 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);
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->sample_length; j < len_random; j++) {
- buffer[j] = (rand() % 0x100);
+ for (j = example->pseudo_length; j < (int) sizeof(*ps_header); j++) {
+ ((guint8*)ps_header)[j] = (rand() % 0x100);
}
- wtap_dump(dump, &pkthdr, &ps_header, &buffer[0], &err);
+ 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);
+ }
+ }
+
+ /* XXX - report errors! */
+ if (!wtap_dump(dump, &pkthdr, &buffer[0], &err, &err_info)) {
+ if (err_info != NULL)
+ g_free(err_info);
+ }
}
wtap_dump_close(dump, &err);
}
/* Print usage statement and exit program */
-static
-void usage(void)
+static void
+usage(gboolean is_error)
{
- int num_entries = array_length(examples);
- int i;
+ FILE *output;
+ int num_entries = array_length(examples);
+ int i;
+
+ if (!is_error) {
+ output = stdout;
+ }
+ else {
+ output = stderr;
+ }
- printf("Usage: randpkt [-b maxbytes] [-c count] [-t type] filename\n");
- printf("Default max bytes (per packet) is 5000\n");
- printf("Default count is 1000.\n");
- printf("Types:\n");
+ fprintf(output, "Usage: randpkt [-b maxbytes] [-c count] [-t type] filename\n");
+ fprintf(output, "Default max bytes (per packet) is 5000\n");
+ fprintf(output, "Default count is 1000.\n");
+ fprintf(output, "Types:\n");
for (i = 0; i < num_entries; i++) {
- printf("\t%s\t%s\n", examples[i].abbrev, examples[i].longname);
+ fprintf(output, "\t%-16s%s\n", examples[i].abbrev, examples[i].longname);
}
- printf("\n");
+ fprintf(output, "\n");
- exit(0);
+ exit(is_error ? 1 : 0);
}
/* Parse command-line option "type" and return enum type */
}
/* Complain */
- printf("Type %s not known.\n", string);
+ fprintf(stderr, "randpkt: Type %s not known.\n", string);
exit(1);
}
}
}
- 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);
}
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 = ws_open(RANDOM_DEV, O_RDONLY);
+ if (fd == -1) {
+ if (errno != ENOENT) {
+ fprintf(stderr,
+ "randpkt: Could not open " RANDOM_DEV " for reading: %s\n",
+ g_strerror(errno));
+ exit(2);
+ }
+ goto fallback;
}
- read(fd, &randomness, sizeof(randomness));
-#else
- time_t now;
+ ret = ws_read(fd, &randomness, sizeof randomness);
+ if (ret == -1) {
+ fprintf(stderr,
+ "randpkt: Could not read from " RANDOM_DEV ": %s\n",
+ g_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);
+ ws_close(fd);
+ return;
+fallback:
+#endif
now = time(NULL);
randomness = (unsigned int) now;
-#endif
srand(randomness);
}
+
+/*
+ * Editor modelines - http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ *
+ * vi: set shiftwidth=8 tabstop=8 noexpandtab:
+ * :indentSize=8:tabSize=8:noTabs=false:
+ */
git.samba.org / metze / wireshark / wip.git / blobdiff