void randpkt_example_init(randpkt_example* example, char* produce_filename, int produce_max_bytes)
{
int err;
if (strcmp(produce_filename, "-") == 0) {
/* Write to the standard output. */
example->dump = wtap_dump_open_stdout(WTAP_FILE_TYPE_SUBTYPE_PCAP,
example->sample_wtap_encap, produce_max_bytes, FALSE /* compressed */, &err);
example->filename = "the standard output";
} else {
example->dump = wtap_dump_open(produce_filename, WTAP_FILE_TYPE_SUBTYPE_PCAP,
example->sample_wtap_encap, produce_max_bytes, FALSE /* compressed */, &err);
example->filename = produce_filename;
}
if (!example->dump) {
fprintf(stderr, "randpkt: Error writing to %s\n", example->filename);
exit(2);
}
/* 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 {
example->produce_max_bytes = produce_max_bytes - example->sample_length;
}
}
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;
}
/*
* Merges the files to an output file whose name is supplied as an argument,
* based on given input, and invokes callback during execution. Returns
* MERGE_OK on success, or a MERGE_ERR_XXX on failure.
*/
merge_result
merge_files(const gchar* out_filename, const int file_type,
const char *const *in_filenames, const guint in_file_count,
const gboolean do_append, const idb_merge_mode mode,
guint snaplen, const gchar *app_name, merge_progress_callback_t* cb,
int *err, gchar **err_info, guint *err_fileno,
guint32 *err_framenum)
{
merge_in_file_t *in_files = NULL;
int frame_type = WTAP_ENCAP_PER_PACKET;
merge_result status = MERGE_OK;
wtap_dumper *pdh;
GArray *shb_hdrs = NULL;
wtapng_iface_descriptions_t *idb_inf = NULL;
g_assert(out_filename != NULL);
g_assert(in_file_count > 0);
g_assert(in_filenames != NULL);
g_assert(err != NULL);
g_assert(err_info != NULL);
g_assert(err_fileno != NULL);
g_assert(err_framenum != NULL);
/* if a callback was given, it has to have a callback function ptr */
g_assert((cb != NULL) ? (cb->callback_func != NULL) : TRUE);
merge_debug("merge_files: begin");
/* open the input files */
if (!merge_open_in_files(in_file_count, in_filenames, &in_files, cb,
err, err_info, err_fileno)) {
merge_debug("merge_files: merge_open_in_files() failed with err=%d", *err);
*err_framenum = 0;
return MERGE_ERR_CANT_OPEN_INFILE;
}
if (snaplen == 0) {
/* Snapshot length not specified - default to the maximum. */
snaplen = WTAP_MAX_PACKET_SIZE_STANDARD;
}
/*
* This doesn't tell us that much. It tells us what to set the outfile's
* encap type to, but that's all - for example, it does *not* tells us
* whether the input files had the same number of IDBs, for the same exact
* interfaces, and only one IDB each, so it doesn't actually tell us
* whether we can merge IDBs into one or not.
*/
frame_type = merge_select_frame_type(in_file_count, in_files);
merge_debug("merge_files: got frame_type=%d", frame_type);
if (cb)
cb->callback_func(MERGE_EVENT_FRAME_TYPE_SELECTED, frame_type, in_files, in_file_count, cb->data);
/* prepare the outfile */
if (file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
shb_hdrs = create_shb_header(in_files, in_file_count, app_name);
merge_debug("merge_files: SHB created");
idb_inf = generate_merged_idb(in_files, in_file_count, mode);
merge_debug("merge_files: IDB merge operation complete, got %u IDBs", idb_inf ? idb_inf->interface_data->len : 0);
pdh = wtap_dump_open_ng(out_filename, file_type, frame_type, snaplen,
FALSE /* compressed */, shb_hdrs, idb_inf,
NULL, err);
}
else {
pdh = wtap_dump_open(out_filename, file_type, frame_type, snaplen,
FALSE /* compressed */, err);
}
if (pdh == NULL) {
merge_close_in_files(in_file_count, in_files);
g_free(in_files);
wtap_block_array_free(shb_hdrs);
wtap_free_idb_info(idb_inf);
*err_framenum = 0;
return MERGE_ERR_CANT_OPEN_OUTFILE;
}
if (cb)
cb->callback_func(MERGE_EVENT_READY_TO_MERGE, 0, in_files, in_file_count, cb->data);
status = merge_process_packets(pdh, file_type, in_files, in_file_count,
do_append, snaplen, cb, err, err_info,
err_fileno, err_framenum);
g_free(in_files);
wtap_block_array_free(shb_hdrs);
wtap_free_idb_info(idb_inf);
return status;
}
int main(int argc, char *argv[])
{
wtap *wth = NULL;
wtap_dumper *pdh = NULL;
int err;
gchar *err_info;
gint64 data_offset;
const struct wtap_pkthdr *phdr;
guint wrong_order_count = 0;
gboolean write_output_regardless = TRUE;
guint i;
GPtrArray *frames;
FrameRecord_t *prevFrame = NULL;
int opt;
int file_count;
char *infile;
char *outfile;
/* Process the options first */
while ((opt = getopt(argc, argv, "n")) != -1) {
switch (opt) {
case 'n':
write_output_regardless = FALSE;
break;
case '?':
usage();
exit(1);
}
}
/* Remaining args are file names */
file_count = argc - optind;
if (file_count == 2) {
infile = argv[optind];
outfile = argv[optind+1];
}
else {
usage();
exit(1);
}
/* Open infile */
wth = wtap_open_offline(infile, &err, &err_info, TRUE);
if (wth == NULL) {
printf("reorder: Can't open %s: %s\n", infile, wtap_strerror(err));
exit(1);
}
DEBUG_PRINT("file_type is %u\n", wtap_file_type(wth));
/* Open outfile (same filetype/encap as input file) */
pdh = wtap_dump_open(outfile, wtap_file_type(wth), wtap_file_encap(wth), 65535, FALSE, &err);
if (pdh == NULL) {
printf("Failed to open output file: (%s) - error %s\n", outfile, wtap_strerror(err));
exit(1);
}
/* Allocate the array of frame pointers. */
frames = g_ptr_array_new();
/* Read each frame from infile */
while (wtap_read(wth, &err, &err_info, &data_offset)) {
FrameRecord_t *newFrameRecord;
phdr = wtap_phdr(wth);
newFrameRecord = g_slice_new(FrameRecord_t);
newFrameRecord->num = frames->len + 1;
newFrameRecord->offset = data_offset;
newFrameRecord->length = phdr->len;
newFrameRecord->time = phdr->ts;
if (prevFrame && frames_compare(&newFrameRecord, &prevFrame) < 0) {
wrong_order_count++;
}
g_ptr_array_add(frames, newFrameRecord);
prevFrame = newFrameRecord;
}
printf("%u frames, %u out of order\n", frames->len, wrong_order_count);
/* Sort the frames */
if (wrong_order_count > 0) {
g_ptr_array_sort(frames, frames_compare);
}
/* Write out each sorted frame in turn */
for (i = 0; i < frames->len; i++) {
FrameRecord_t *frame = frames->pdata[i];
/* Avoid writing if already sorted and configured to */
if (write_output_regardless || (wrong_order_count > 0)) {
frame_write(frame, wth, pdh);
}
g_slice_free(FrameRecord_t, frame);
}
if (!write_output_regardless && (wrong_order_count == 0)) {
printf("Not writing output file because input file is already in order!\n");
}
/* Free the whole array */
g_ptr_array_free(frames, TRUE);
/* Close outfile */
if (!wtap_dump_close(pdh, &err)) {
printf("Error closing %s: %s\n", outfile, wtap_strerror(err));
exit(1);
}
/* Finally, close infile */
wtap_fdclose(wth);
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;
}