#include "svnversion.h"
#include "merge.h"
-
-#ifdef HAVE_IO_H
-# include <io.h>
-#endif
+#include "file_util.h"
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
-/* Win32 needs the O_BINARY flag for open() */
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
+static int
+get_natural_int(const char *string, const char *name)
+{
+ long number;
+ char *p;
+
+ number = strtol(string, &p, 10);
+ if (p == string || *p != '\0') {
+ fprintf(stderr, "mergecap: The specified %s \"%s\" isn't a decimal number\n",
+ name, string);
+ exit(1);
+ }
+ if (number < 0) {
+ fprintf(stderr, "mergecap: The specified %s is a negative number\n",
+ name);
+ exit(1);
+ }
+ if (number > INT_MAX) {
+ fprintf(stderr, "mergecap: The specified %s is too large (greater than %d)\n",
+ name, INT_MAX);
+ exit(1);
+ }
+ return number;
+}
+
+static int
+get_positive_int(const char *string, const char *name)
+{
+ long number;
+
+ number = get_natural_int(string, name);
+
+ if (number == 0) {
+ fprintf(stderr, "mergecap: The specified %s is zero\n",
+ name);
+ exit(1);
+ }
+
+ return number;
+}
/*
* Show the usage
static void
usage(void)
{
- int i;
- const char *string;
-
- printf("Usage: mergecap [-hva] [-s <snaplen>] [-T <encap type>]\n");
- printf(" [-F <capture type>] -w <outfile> <infile> [...]\n\n");
- printf(" where\t-h produces this help listing.\n");
- printf(" \t-v verbose operation, default is silent\n");
- printf(" \t-a files should be concatenated, not merged\n");
- printf(" \t Default merges based on frame timestamps\n");
- printf(" \t-s <snaplen>: truncate packets to <snaplen> bytes of data\n");
- printf(" \t-w <outfile>: sets output filename to <outfile>\n");
- printf(" \t-T <encap type> encapsulation type to use:\n");
- for (i = 0; i < WTAP_NUM_ENCAP_TYPES; i++) {
- string = wtap_encap_short_string(i);
- if (string != NULL)
- printf(" \t %s - %s\n",
- string, wtap_encap_string(i));
- }
- printf(" \t default is the same as the first input file\n");
- printf(" \t-F <capture type> capture file type to write:\n");
- for (i = 0; i < WTAP_NUM_FILE_TYPES; i++) {
- if (wtap_dump_can_open(i))
- printf(" \t %s - %s\n",
- wtap_file_type_short_string(i), wtap_file_type_string(i));
- }
- printf(" \t default is libpcap\n");
+
+ fprintf(stderr, "Mergecap %s"
+#ifdef SVNVERSION
+ " (" SVNVERSION ")"
+#endif
+ "\n", VERSION);
+ fprintf(stderr, "Merge two or more capture files into one.\n");
+ fprintf(stderr, "See http://www.wireshark.org for more information.\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Usage: mergecap [options] -w <outfile|-> <infile> ...\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Output:\n");
+ fprintf(stderr, " -a files should be concatenated, not merged\n");
+ fprintf(stderr, " Default merges based on frame timestamps\n");
+ fprintf(stderr, " -s <snaplen> truncate packets to <snaplen> bytes of data\n");
+ fprintf(stderr, " -w <outfile|-> set the output filename to <outfile> or '-' for stdout\n");
+ fprintf(stderr, " -F <capture type> set the output file type, default is libpcap\n");
+ fprintf(stderr, " an empty \"-F\" option will list the file types\n");
+ fprintf(stderr, " -T <encap type> set the output file encapsulation type,\n");
+ fprintf(stderr, " default is the same as the first input file\n");
+ fprintf(stderr, " an empty \"-T\" option will list the encapsulation types\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Miscellaneous:\n");
+ fprintf(stderr, " -h display this help and exit\n");
+ fprintf(stderr, " -v verbose output\n");
}
+static void list_capture_types(void) {
+ int i;
+ fprintf(stderr, "mergecap: The available capture file types for \"F\":\n");
+ for (i = 0; i < WTAP_NUM_FILE_TYPES; i++) {
+ if (wtap_dump_can_open(i))
+ fprintf(stderr, " %s - %s\n",
+ wtap_file_type_short_string(i), wtap_file_type_string(i));
+ }
+}
+
+static void list_encap_types(void) {
+ int i;
+ const char *string;
+
+ fprintf(stderr, "mergecap: The available encapsulation types for \"T\":\n");
+ for (i = 0; i < WTAP_NUM_ENCAP_TYPES; i++) {
+ string = wtap_encap_short_string(i);
+ if (string != NULL)
+ fprintf(stderr, " %s - %s\n",
+ string, wtap_encap_string(i));
+ }
+}
int
main(int argc, char *argv[])
extern char *optarg;
extern int optind;
int opt;
- char *p;
gboolean do_append = FALSE;
+ gboolean verbose = FALSE;
int in_file_count = 0;
+ guint snaplen = 0;
+ int file_type = WTAP_FILE_PCAP; /* default to libpcap format */
+ int frame_type = -2;
+ int out_fd;
merge_in_file_t *in_files = NULL;
- merge_out_file_t out_file;
- int err;
+ int i;
+ wtap *wth;
+ struct wtap_pkthdr *phdr, snap_phdr;
+ wtap_dumper *pdh;
+ int open_err, read_err, write_err, close_err;
+ gchar *err_info;
+ int err_fileno;
char *out_filename = NULL;
-
- /* initialize out_file */
- out_file.fd = 0;
- out_file.pdh = NULL; /* wiretap dumpfile */
- out_file.file_type = WTAP_FILE_PCAP; /* default to "libpcap" */
- out_file.frame_type = -2; /* leave type alone */
- out_file.snaplen = 0; /* no limit */
- out_file.count = 1; /* frames output */
-
- merge_verbose = VERBOSE_ERRORS;
+ gboolean got_read_error = FALSE, got_write_error = FALSE;
+ int count;
/* Process the options first */
while ((opt = getopt(argc, argv, "hvas:T:F:w:")) != -1) {
break;
case 'T':
- out_file.frame_type = wtap_short_string_to_encap(optarg);
- if (out_file.frame_type < 0) {
- fprintf(stderr, "mergecap: \"%s\" is not a valid encapsulation type\n",
+ frame_type = wtap_short_string_to_encap(optarg);
+ if (frame_type < 0) {
+ fprintf(stderr, "mergecap: \"%s\" isn't a valid encapsulation type\n",
optarg);
+ list_encap_types();
exit(1);
}
break;
case 'F':
- out_file.file_type = wtap_short_string_to_file_type(optarg);
- if (out_file.file_type < 0) {
- fprintf(stderr, "mergecap: \"%s\" is not a valid capture file type\n",
+ file_type = wtap_short_string_to_file_type(optarg);
+ if (file_type < 0) {
+ fprintf(stderr, "mergecap: \"%s\" isn't a valid capture file type\n",
optarg);
+ list_capture_types();
exit(1);
}
break;
case 'v':
- merge_verbose = VERBOSE_ALL;
+ verbose = TRUE;
break;
case 's':
- out_file.snaplen = strtol(optarg, &p, 10);
- if (p == optarg || *p != '\0') {
- fprintf(stderr, "mergecap: \"%s\" is not a valid snapshot length\n",
- optarg);
- exit(1);
- }
+ snaplen = get_positive_int(optarg, "snapshot length");
break;
case 'h':
- printf("mergecap version %s"
-#ifdef SVNVERSION
- " (" SVNVERSION ")"
-#endif
- "\n", VERSION);
usage();
exit(0);
break;
case '?': /* Bad options if GNU getopt */
- usage();
+ switch(optopt) {
+ case'F':
+ list_capture_types();
+ break;
+ case'T':
+ list_encap_types();
+ break;
+ default:
+ usage();
+ }
exit(1);
break;
if (!out_filename) {
fprintf(stderr, "mergecap: an output filename must be set with -w\n");
fprintf(stderr, " run with -h for help\n");
- exit(1);
+ return 1;
+ }
+ if (in_file_count < 1) {
+ fprintf(stderr, "mergecap: No input files were specified\n");
+ return 1;
}
/* open the input files */
- in_file_count = merge_open_in_files(in_file_count, &argv[optind], &in_files, &err);
- if (in_file_count < 1) {
- fprintf(stderr, "mergecap: No valid input files\n");
- exit(1);
+ if (!merge_open_in_files(in_file_count, &argv[optind], &in_files,
+ &open_err, &err_info, &err_fileno)) {
+ fprintf(stderr, "mergecap: Can't open %s: %s\n", argv[optind + err_fileno],
+ wtap_strerror(open_err));
+ switch (open_err) {
+
+ case WTAP_ERR_UNSUPPORTED:
+ case WTAP_ERR_UNSUPPORTED_ENCAP:
+ case WTAP_ERR_BAD_RECORD:
+ fprintf(stderr, "(%s)\n", err_info);
+ g_free(err_info);
+ break;
+ }
+ return 2;
+ }
+
+ if (verbose) {
+ for (i = 0; i < in_file_count; i++)
+ fprintf(stderr, "mergecap: %s is type %s.\n", argv[optind + i],
+ wtap_file_type_string(wtap_file_type(in_files[i].wth)));
+ }
+
+ if (snaplen == 0) {
+ /*
+ * Snapshot length not specified - default to the maximum of the
+ * snapshot lengths of the input files.
+ */
+ snaplen = merge_max_snapshot_length(in_file_count, in_files);
}
/* set the outfile frame type */
- if (out_file.frame_type == -2)
- out_file.frame_type = merge_select_frame_type(in_file_count, in_files);
+ if (frame_type == -2) {
+ /*
+ * Default to the appropriate frame type for the input files.
+ */
+ frame_type = merge_select_frame_type(in_file_count, in_files);
+ if (verbose) {
+ if (frame_type == WTAP_ENCAP_PER_PACKET) {
+ /*
+ * Find out why we had to choose WTAP_ENCAP_PER_PACKET.
+ */
+ int first_frame_type, this_frame_type;
+
+ first_frame_type = wtap_file_encap(in_files[0].wth);
+ for (i = 1; i < in_file_count; i++) {
+ this_frame_type = wtap_file_encap(in_files[i].wth);
+ if (first_frame_type != this_frame_type) {
+ fprintf(stderr, "mergecap: multiple frame encapsulation types detected\n");
+ fprintf(stderr, " defaulting to WTAP_ENCAP_PER_PACKET\n");
+ fprintf(stderr, " %s had type %s (%s)\n",
+ in_files[0].filename,
+ wtap_encap_string(first_frame_type),
+ wtap_encap_short_string(first_frame_type));
+ fprintf(stderr, " %s had type %s (%s)\n",
+ in_files[i].filename,
+ wtap_encap_string(this_frame_type),
+ wtap_encap_short_string(this_frame_type));
+ break;
+ }
+ }
+ }
+ fprintf(stderr, "mergecap: selected frame_type %s (%s)\n",
+ wtap_encap_string(frame_type),
+ wtap_encap_short_string(frame_type));
+ }
+ }
/* open the outfile */
if (strncmp(out_filename, "-", 2) == 0) {
/* use stdout as the outfile */
- out_file.fd = 1 /*stdout*/;
+ out_fd = 1 /*stdout*/;
} else {
/* open the outfile */
- out_file.fd = open(out_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
- }
- if (out_file.fd == -1) {
- fprintf(stderr, "mergecap: Couldn't open output file %s: %s\n",
- out_filename, strerror(errno));
- exit(1);
+ out_fd = eth_open(out_filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, 0644);
+ if (out_fd == -1) {
+ fprintf(stderr, "mergecap: Couldn't open output file %s: %s\n",
+ out_filename, strerror(errno));
+ exit(1);
+ }
}
/* prepare the outfile */
- if (!merge_open_outfile(&out_file, merge_max_snapshot_length(in_file_count, in_files), &err)) {
+ pdh = wtap_dump_fdopen(out_fd, file_type, frame_type, snaplen, FALSE /* compressed */, &open_err);
+ if (pdh == NULL) {
merge_close_in_files(in_file_count, in_files);
+ g_free(in_files);
+ fprintf(stderr, "mergecap: Can't open or create %s: %s\n", out_filename,
+ wtap_strerror(open_err));
exit(1);
}
/* do the merge (or append) */
- if (do_append)
- merge_append_files(in_file_count, in_files, &out_file, &err);
- else
- merge_files(in_file_count, in_files, &out_file, &err);
+ count = 1;
+ for (;;) {
+ if (do_append)
+ wth = merge_append_read_packet(in_file_count, in_files, &read_err,
+ &err_info);
+ else
+ wth = merge_read_packet(in_file_count, in_files, &read_err,
+ &err_info);
+ if (wth == NULL) {
+ if (read_err != 0)
+ got_read_error = TRUE;
+ break;
+ }
+
+ if (verbose)
+ fprintf(stderr, "Record: %u\n", count++);
+
+ /* We simply write it, perhaps after truncating it; we could do other
+ * things, like modify it. */
+ phdr = wtap_phdr(wth);
+ if (snaplen != 0 && phdr->caplen > snaplen) {
+ snap_phdr = *phdr;
+ snap_phdr.caplen = snaplen;
+ phdr = &snap_phdr;
+ }
+
+ if (!wtap_dump(pdh, phdr, wtap_pseudoheader(wth),
+ wtap_buf_ptr(wth), &write_err)) {
+ got_write_error = TRUE;
+ break;
+ }
+ }
merge_close_in_files(in_file_count, in_files);
- merge_close_outfile(&out_file);
+ if (!got_read_error && !got_write_error) {
+ if (!wtap_dump_close(pdh, &write_err))
+ got_write_error = TRUE;
+ } else
+ wtap_dump_close(pdh, &close_err);
+
+ if (got_read_error) {
+ /*
+ * Find the file on which we got the error, and report the error.
+ */
+ for (i = 0; i < in_file_count; i++) {
+ if (in_files[i].state == GOT_ERROR) {
+ fprintf(stderr, "mergecap: Error reading %s: %s\n",
+ in_files[i].filename, wtap_strerror(read_err));
+ switch (read_err) {
+
+ case WTAP_ERR_UNSUPPORTED:
+ case WTAP_ERR_UNSUPPORTED_ENCAP:
+ case WTAP_ERR_BAD_RECORD:
+ fprintf(stderr, "(%s)\n", err_info);
+ g_free(err_info);
+ break;
+ }
+ }
+ }
+ }
+
+ if (got_write_error) {
+ fprintf(stderr, "mergecap: Error writing to outfile: %s\n",
+ wtap_strerror(write_err));
+ }
- free(in_files);
+ g_free(in_files);
- return 0;
+ return (!got_read_error && !got_write_error) ? 0 : 2;
}
git.samba.org / obnox / wireshark / wip.git / blobdiff