int
main(int argc, char **argv)
{
wtap_dumper *dump;
struct wtap_pkthdr pkthdr;
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;
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;
static const struct option long_options[] = {
{(char *)"help", no_argument, NULL, 'h'},
{0, 0, 0, 0 }
};
#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) {
fprintf(stderr,
"randpkt: Max bytes is 65536\n");
exit(1);
}
break;
case 'c': /* count */
produce_count = atoi(optarg);
break;
case 't': /* type of packet to produce */
produce_type = parse_type(optarg);
break;
case 'h':
usage(FALSE);
break;
default:
usage(TRUE);
break;
}
}
/* any more command line parameters? */
if (argc > optind) {
produce_filename = argv[optind];
}
else {
usage(TRUE);
}
example = find_example(produce_type);
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) {
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);
/* Produce random packets */
for (i = 0; i < produce_count; i++) {
if (produce_max_bytes > 0) {
len_random = (rand() % produce_max_bytes + 1);
}
else {
len_random = 0;
}
len_this_pkt = example->sample_length + len_random;
pkthdr.caplen = len_this_pkt;
pkthdr.len = len_this_pkt;
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_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);
return 0;
}
int
main(int argc, char **argv)
{
wtap_dumper *dump;
struct wtap_pkthdr pkthdr;
union wtap_pseudo_header ps_header;
int i, j, len_this_pkt, len_random, err;
guint8 buffer[65536];
int opt;
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:ht:")) != -1) {
switch (opt) {
case 'b': /* max bytes */
produce_max_bytes = atoi(optarg);
if (produce_max_bytes > 65536) {
fprintf(stderr,
"randpkt: Max bytes is 65536\n");
exit(1);
}
break;
case 'c': /* count */
produce_count = atoi(optarg);
break;
case 't': /* type of packet to produce */
produce_type = parse_type(optarg);
break;
case 'h':
default:
usage();
break;
}
}
/* any more command line parameters? */
if (argc > optind) {
produce_filename = argv[optind];
}
else {
usage();
}
example = find_example(produce_type);
dump = wtap_dump_open(produce_filename, WTAP_FILE_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) {
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);
/* Produce random packets */
for (i = 0; i < produce_count; i++) {
if (produce_max_bytes > 0) {
len_random = (rand() % produce_max_bytes + 1);
}
else {
len_random = 0;
}
len_this_pkt = example->sample_length + len_random;
pkthdr.caplen = len_this_pkt;
pkthdr.len = len_this_pkt;
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_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);
}
wtap_dump_close(dump, &err);
return 0;
}
