static void exp_pdu_file_open(exp_pdu_t *exp_pdu_tap_data) { int import_file_fd; char *tmpname, *capfile_name; int err; /* pcapng defs */ wtapng_section_t *shb_hdr; wtapng_iface_descriptions_t *idb_inf; wtapng_if_descr_t int_data; GString *os_info_str; char *appname; /* Choose a random name for the temporary import buffer */ import_file_fd = create_tempfile(&tmpname, "Wireshark_PDU_"); capfile_name = g_strdup(tmpname); /* Create data for SHB */ os_info_str = g_string_new(""); get_os_version_info(os_info_str); appname = g_strdup_printf("Wireshark %s", get_ws_vcs_version_info()); shb_hdr = g_new(wtapng_section_t,1); shb_hdr->section_length = -1; /* options */ shb_hdr->opt_comment = g_strdup_printf("Dump of PDUs from %s", cfile.filename); shb_hdr->shb_hardware = NULL; /* UTF-8 string containing the * description of the hardware used to create this section. */ shb_hdr->shb_os = os_info_str->str; /* UTF-8 string containing the name * of the operating system used to create this section. */ g_string_free(os_info_str, FALSE); /* The actual string is not freed */ shb_hdr->shb_user_appl = appname; /* UTF-8 string containing the name * of the application used to create this section. */ /* Create fake IDB info */ idb_inf = g_new(wtapng_iface_descriptions_t,1); idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t)); /* create the fake interface data */ int_data.wtap_encap = WTAP_ENCAP_WIRESHARK_UPPER_PDU; int_data.time_units_per_second = 1000000; /* default microsecond resolution */ int_data.link_type = wtap_wtap_encap_to_pcap_encap(WTAP_ENCAP_WIRESHARK_UPPER_PDU); int_data.snap_len = WTAP_MAX_PACKET_SIZE; int_data.if_name = g_strdup("Fake IF, PDU->Export"); int_data.opt_comment = NULL; int_data.if_description = NULL; int_data.if_speed = 0; int_data.if_tsresol = 6; int_data.if_filter_str = NULL; int_data.bpf_filter_len = 0; int_data.if_filter_bpf_bytes = NULL; int_data.if_os = NULL; int_data.if_fcslen = -1; int_data.num_stat_entries = 0; /* Number of ISB:s */ int_data.interface_statistics = NULL; g_array_append_val(idb_inf->interface_data, int_data); exp_pdu_tap_data->wdh = wtap_dump_fdopen_ng(import_file_fd, WTAP_FILE_TYPE_SUBTYPE_PCAPNG, WTAP_ENCAP_WIRESHARK_UPPER_PDU, WTAP_MAX_PACKET_SIZE, FALSE, shb_hdr, idb_inf, &err); if (exp_pdu_tap_data->wdh == NULL) { open_failure_alert_box(capfile_name, err, TRUE); goto end; } /* Run the tap */ cf_retap_packets(&cfile); if (!wtap_dump_close(exp_pdu_tap_data->wdh, &err)) { write_failure_alert_box(capfile_name, err); } remove_tap_listener(exp_pdu_tap_data); /* XXX: should this use the open_routine type in the cfile instead of WTAP_TYPE_AUTO? */ if (cf_open(&cfile, capfile_name, WTAP_TYPE_AUTO, TRUE /* temporary file */, &err) != CF_OK) { open_failure_alert_box(capfile_name, err, FALSE); goto end; } switch (cf_read(&cfile, FALSE)) { case CF_READ_OK: case CF_READ_ERROR: /* Just because we got an error, that doesn't mean we were unable to read any of the file; we handle what we could get from the file. */ break; case CF_READ_ABORTED: /* The user bailed out of re-reading the capture file; the capture file has been closed - just free the capture file name string and return (without changing the last containing directory). */ break; } end: g_free(capfile_name); g_free(shb_hdr); g_free(appname); }
int main(int argc, char *argv[]) { int opt; gboolean do_append = FALSE; gboolean verbose = FALSE; int in_file_count = 0; guint snaplen = 0; #ifdef PCAP_NG_DEFAULT int file_type = WTAP_FILE_PCAPNG; /* default to pcap format */ #else int file_type = WTAP_FILE_PCAP; /* default to pcapng format */ #endif int frame_type = -2; int out_fd; merge_in_file_t *in_files = NULL, *in_file; int i; struct wtap_pkthdr *phdr, snap_phdr; wtap_dumper *pdh; int open_err, read_err = 0, write_err, close_err; gchar *err_info; int err_fileno; char *out_filename = NULL; gboolean got_read_error = FALSE, got_write_error = FALSE; int count; #ifdef _WIN32 arg_list_utf_16to8(argc, argv); create_app_running_mutex(); #endif /* _WIN32 */ /* Process the options first */ while ((opt = getopt(argc, argv, "aF:hs:T:vw:")) != -1) { switch (opt) { case 'a': do_append = !do_append; break; case 'F': 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 'h': usage(); exit(0); break; case 's': snaplen = get_positive_int(optarg, "snapshot length"); break; case 'T': 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 'v': verbose = TRUE; break; case 'w': out_filename = optarg; break; case '?': /* Bad options if GNU getopt */ switch(optopt) { case'F': list_capture_types(); break; case'T': list_encap_types(); break; default: usage(); } exit(1); break; } } /* check for proper args; at a minimum, must have an output * filename and one input file */ in_file_count = argc - optind; if (!out_filename) { fprintf(stderr, "mergecap: an output filename must be set with -w\n"); fprintf(stderr, " run with -h for help\n"); return 1; } if (in_file_count < 1) { fprintf(stderr, "mergecap: No input files were specified\n"); return 1; } /* open the input files */ 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_FILE: 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 (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_fd = 1 /*stdout*/; } else { /* open the outfile */ out_fd = ws_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, g_strerror(errno)); exit(1); } } /* prepare the outfile */ if(file_type == WTAP_FILE_PCAPNG ){ wtapng_section_t *shb_hdr; GString *comment_gstr; shb_hdr = g_new(wtapng_section_t,1); comment_gstr = g_string_new("File created by merging: \n"); for (i = 0; i < in_file_count; i++) { g_string_append_printf(comment_gstr, "File%d: %s \n",i+1,in_files[i].filename); } shb_hdr->section_length = -1; /* options */ shb_hdr->opt_comment = comment_gstr->str; /* NULL if not available */ shb_hdr->shb_hardware = NULL; /* NULL if not available, UTF-8 string containing the description of the hardware used to create this section. */ shb_hdr->shb_os = NULL; /* NULL if not available, UTF-8 string containing the name of the operating system used to create this section. */ shb_hdr->shb_user_appl = "mergecap"; /* NULL if not available, UTF-8 string containing the name of the application used to create this section. */ pdh = wtap_dump_fdopen_ng(out_fd, file_type, frame_type, snaplen, FALSE /* compressed */, shb_hdr, NULL /* wtapng_iface_descriptions_t *idb_inf */, &open_err); g_string_free(comment_gstr, TRUE); } else { 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) */ count = 1; for (;;) { if (do_append) in_file = merge_append_read_packet(in_file_count, in_files, &read_err, &err_info); else in_file = merge_read_packet(in_file_count, in_files, &read_err, &err_info); if (in_file == NULL) { /* EOF */ break; } if (read_err != 0) { /* I/O error reading from in_file */ 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(in_file->wth); if (snaplen != 0 && phdr->caplen > snaplen) { snap_phdr = *phdr; snap_phdr.caplen = snaplen; phdr = &snap_phdr; } if (!wtap_dump(pdh, phdr, wtap_buf_ptr(in_file->wth), &write_err)) { got_write_error = TRUE; break; } } merge_close_in_files(in_file_count, in_files); 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_FILE: fprintf(stderr, "(%s)\n", err_info); g_free(err_info); break; } } } } if (got_write_error) { switch (write_err) { case WTAP_ERR_UNSUPPORTED_ENCAP: /* * This is a problem with the particular frame we're writing; * note that, and give the frame number. */ fprintf(stderr, "mergecap: Frame %u of \"%s\" has a network type that can't be saved in a file with that format\n.", in_file->packet_num, in_file->filename); break; default: fprintf(stderr, "mergecap: Error writing to outfile: %s\n", wtap_strerror(write_err)); break; } } g_free(in_files); return (!got_read_error && !got_write_error) ? 0 : 2; }
/* * Opens an .xml file with Trace data formated according to 3GPP TS 32.423 and converts it to * an "Exported PDU type file with the entire xml file as the first "packet" appending the * raw messages as subsequent packages to be dissected by wireshark. */ static wtap_open_return_val create_temp_pcapng_file(wtap *wth, int *err, gchar **err_info, nettrace_3gpp_32_423_file_info_t *file_info) { int import_file_fd; wtap_dumper* wdh_exp_pdu; int exp_pdu_file_err; /* pcapng defs */ wtapng_section_t *shb_hdr; wtapng_iface_descriptions_t *idb_inf; wtapng_if_descr_t int_data; GString *os_info_str; char *appname; gint64 file_size; int packet_size; guint8 *packet_buf; int wrt_err; gchar *wrt_err_info; struct wtap_pkthdr phdr; gboolean do_random = FALSE; char *curr_pos, *next_pos; import_file_fd = create_tempfile(&(file_info->tmpname), "Wireshark_PDU_"); /* Now open a file and dump to it */ /* Create data for SHB */ os_info_str = g_string_new(""); get_os_version_info(os_info_str); appname = g_strdup_printf("Wireshark %s", get_ws_vcs_version_info()); shb_hdr = g_new(wtapng_section_t, 1); shb_hdr->section_length = -1; /* options */ shb_hdr->opt_comment = g_strdup_printf("File converted to Exported PDU format during opening"); /* * UTF-8 string containing the description of the hardware used to create * this section. */ shb_hdr->shb_hardware = NULL; /* * UTF-8 string containing the name of the operating system used to create * this section. */ shb_hdr->shb_os = g_string_free(os_info_str, FALSE); /* * UTF-8 string containing the name of the application used to create * this section. */ shb_hdr->shb_user_appl = appname; /* Create fake IDB info */ idb_inf = g_new(wtapng_iface_descriptions_t, 1); idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t)); /* create the fake interface data */ int_data.wtap_encap = WTAP_ENCAP_WIRESHARK_UPPER_PDU; int_data.time_units_per_second = 1000000; /* default microsecond resolution */ int_data.link_type = wtap_wtap_encap_to_pcap_encap(WTAP_ENCAP_WIRESHARK_UPPER_PDU); int_data.snap_len = WTAP_MAX_PACKET_SIZE; int_data.if_name = g_strdup("Fake IF"); int_data.opt_comment = NULL; int_data.if_description = NULL; int_data.if_speed = 0; int_data.if_tsresol = 6; int_data.if_filter_str = NULL; int_data.bpf_filter_len = 0; int_data.if_filter_bpf_bytes = NULL; int_data.if_os = NULL; int_data.if_fcslen = -1; int_data.num_stat_entries = 0; /* Number of ISB:s */ int_data.interface_statistics = NULL; g_array_append_val(idb_inf->interface_data, int_data); wdh_exp_pdu = wtap_dump_fdopen_ng(import_file_fd, WTAP_FILE_TYPE_SUBTYPE_PCAPNG, WTAP_ENCAP_WIRESHARK_UPPER_PDU, WTAP_MAX_PACKET_SIZE, FALSE, shb_hdr, idb_inf, NULL, &exp_pdu_file_err); if (wdh_exp_pdu == NULL) { return WTAP_OPEN_ERROR; } g_free(shb_hdr); g_free(appname); /* OK we've opend a new pcap-ng file and written the headers, time to do the packets, strt by finding the file size */ if ((file_size = wtap_file_size(wth, err)) == -1) return WTAP_OPEN_ERROR; if (file_size > MAX_FILE_SIZE) { /* * Don't blow up trying to allocate space for an * immensely-large file. */ *err = WTAP_ERR_BAD_FILE; *err_info = g_strdup_printf("mime_file: File has %" G_GINT64_MODIFIER "d-byte packet, bigger than maximum of %u", file_size, MAX_FILE_SIZE); return WTAP_OPEN_ERROR; } packet_size = (int)file_size; /* Allocate the packet buffer * (the whole file + Exported PDU tag "protocol" and * the string "xml" + 1 filler to end on 4 byte boundary for the tag * + End of options 4 bytes */ /* XXX add the length of exported bdu tag(s) here */ packet_buf = (guint8 *)g_malloc(packet_size + 12); packet_buf[0] = 0; packet_buf[1] = 12; /* EXP_PDU_TAG_PROTO_NAME */ packet_buf[2] = 0; packet_buf[3] = 4; packet_buf[4] = 0x78; /* "x" */ packet_buf[5] = 0x6d; /* "m" */ packet_buf[6] = 0x6c; /* "l" */ packet_buf[7] = 0; /* End of options */ packet_buf[8] = 0; packet_buf[9] = 0; packet_buf[10] = 0; packet_buf[11] = 0; if (!wtap_read_bytes(wth->fh, packet_buf + 12, packet_size, &wrt_err, &wrt_err_info)){ return WTAP_OPEN_ERROR; } /* Create the packet header */ memset(&phdr, 0, sizeof(struct wtap_pkthdr)); phdr.rec_type = REC_TYPE_PACKET; phdr.presence_flags = 0; /* yes, we have no bananas^Wtime stamp */ phdr.caplen = packet_size + 12; phdr.len = packet_size + 12; phdr.ts.secs = 0; phdr.ts.nsecs = 0; /* XXX: report errors! */ if (!wtap_dump(wdh_exp_pdu, &phdr, packet_buf, &wrt_err, &wrt_err_info)) { switch (wrt_err) { case WTAP_ERR_UNWRITABLE_REC_DATA: g_free(wrt_err_info); break; default: break; } g_free(packet_buf); return WTAP_OPEN_ERROR; } /* Advance *packet_buf to point at the raw file data */ curr_pos = packet_buf + 12; /* Lets add the raw messages as packets after the main "packet" with the whole file */ while ((curr_pos = strstr(curr_pos, "<msg")) != NULL){ wtap_open_return_val temp_val; curr_pos = curr_pos + 4; next_pos = strstr(curr_pos, "</msg>"); if (!next_pos){ /* Somethings wrong, bail out */ break; } next_pos = next_pos + 6; /* Do we have a raw msg?) */ curr_pos = strstr(curr_pos, "<rawMsg"); if (!curr_pos){ /* No rawMsg, continue */ curr_pos = next_pos; continue; } curr_pos = curr_pos + 7; /* Add the raw msg*/ temp_val = write_packet_data(wdh_exp_pdu, &phdr, &wrt_err, &wrt_err_info, curr_pos); if (temp_val != WTAP_OPEN_MINE){ g_free(packet_buf); return temp_val; } curr_pos = next_pos; } /* Close the written file*/ if (!wtap_dump_close(wdh_exp_pdu, err)){ g_free(packet_buf); return WTAP_OPEN_ERROR; } g_free(packet_buf); /* Now open the file for reading */ /* Find out if random read was requested */ if (wth->random_fh){ do_random = TRUE; } file_info->wth_tmp_file = wtap_open_offline(file_info->tmpname, WTAP_TYPE_AUTO, err, err_info, do_random); if (!file_info->wth_tmp_file){ return WTAP_OPEN_ERROR; } return WTAP_OPEN_MINE; }
int exp_pdu_open(exp_pdu_t *exp_pdu_tap_data, int fd, char *comment) { int err; /* pcapng defs */ wtap_block_t shb_hdr; GArray *shb_hdrs = g_array_new(FALSE, FALSE, sizeof(wtap_block_t)); wtapng_iface_descriptions_t *idb_inf; wtap_block_t int_data; wtapng_if_descr_mandatory_t *int_data_mand; GString *os_info_str; gsize opt_len; gchar *opt_str; /* Create data for SHB */ os_info_str = g_string_new(""); get_os_version_info(os_info_str); shb_hdr = wtap_block_create(WTAP_BLOCK_NG_SECTION); /* options */ wtap_block_add_string_option(shb_hdr, OPT_COMMENT, comment, strlen(comment)); g_free(comment); /* * UTF-8 string containing the name of the operating system used to create * this section. */ opt_len = os_info_str->len; opt_str = g_string_free(os_info_str, FALSE); if (opt_str) { wtap_block_add_string_option(shb_hdr, OPT_SHB_OS, opt_str, opt_len); g_free(opt_str); } /* * UTF-8 string containing the name of the application used to create * this section. */ wtap_block_add_string_option_format(shb_hdr, OPT_SHB_USERAPPL, "Wireshark %s", get_ws_vcs_version_info()); /* Create fake IDB info */ idb_inf = g_new(wtapng_iface_descriptions_t,1); idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtap_block_t)); /* create the fake interface data */ int_data = wtap_block_create(WTAP_BLOCK_IF_DESCR); int_data_mand = (wtapng_if_descr_mandatory_t*)wtap_block_get_mandatory_data(int_data); int_data_mand->wtap_encap = WTAP_ENCAP_WIRESHARK_UPPER_PDU; int_data_mand->time_units_per_second = 1000000000; /* default nanosecond resolution */ int_data_mand->snap_len = WTAP_MAX_PACKET_SIZE_STANDARD; wtap_block_add_string_option(int_data, OPT_IDB_NAME, "Fake IF, PDU->Export", strlen("Fake IF, PDU->Export")); wtap_block_add_uint8_option(int_data, OPT_IDB_TSRESOL, 9); g_array_append_val(idb_inf->interface_data, int_data); g_array_append_val(shb_hdrs, shb_hdr); /* Use a random name for the temporary import buffer */ exp_pdu_tap_data->wdh = wtap_dump_fdopen_ng(fd, WTAP_FILE_TYPE_SUBTYPE_PCAPNG, WTAP_ENCAP_WIRESHARK_UPPER_PDU, WTAP_MAX_PACKET_SIZE_STANDARD, FALSE, shb_hdrs, idb_inf, NULL, &err); if (exp_pdu_tap_data->wdh == NULL) { g_assert(err != 0); return err; } return 0; }
/* * Merges the files based on given input, and invokes callback during * execution. Returns MERGE_OK on success, or a MERGE_ERR_XXX on failure; note * that the passed-in 'err' variable will be more specific to what failed, and * err_info will have pretty output. */ merge_result merge_files(int out_fd, 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) { merge_in_file_t *in_files = NULL, *in_file = NULL; int frame_type = WTAP_ENCAP_PER_PACKET; merge_result status = MERGE_OK; wtap_dumper *pdh; struct wtap_pkthdr *phdr, snap_phdr; int count = 0; gboolean stop_flag = FALSE; GArray *shb_hdrs = NULL; wtapng_iface_descriptions_t *idb_inf = NULL; g_assert(out_fd > 0); 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); /* 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, err, err_info, err_fileno)) { merge_debug("merge_files: merge_open_in_files() failed with err=%d", *err); return MERGE_ERR_CANT_OPEN_INFILE; } if (cb) cb->callback_func(MERGE_EVENT_INPUT_FILES_OPENED, 0, in_files, in_file_count, cb->data); if (snaplen == 0) { /* Snapshot length not specified - default to the maximum. */ snaplen = WTAP_MAX_PACKET_SIZE; } /* * 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_fdopen_ng(out_fd, file_type, frame_type, snaplen, FALSE /* compressed */, shb_hdrs, idb_inf, NULL, err); } else { pdh = wtap_dump_fdopen(out_fd, 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); return MERGE_ERR_CANT_OPEN_OUTFILE; } if (cb) cb->callback_func(MERGE_EVENT_READY_TO_MERGE, 0, in_files, in_file_count, cb->data); for (;;) { *err = 0; if (do_append) { in_file = merge_append_read_packet(in_file_count, in_files, err, err_info); } else { in_file = merge_read_packet(in_file_count, in_files, err, err_info); } if (in_file == NULL) { /* EOF */ break; } if (*err != 0) { /* I/O error reading from in_file */ status = MERGE_ERR_CANT_READ_INFILE; break; } count++; if (cb) stop_flag = cb->callback_func(MERGE_EVENT_PACKET_WAS_READ, count, in_files, in_file_count, cb->data); if (stop_flag) { /* The user decided to abort the merge. */ status = MERGE_USER_ABORTED; break; } phdr = wtap_phdr(in_file->wth); if (snaplen != 0 && phdr->caplen > snaplen) { /* * The dumper will only write up to caplen bytes out, so we only * need to change that value, instead of cloning the whole packet * with fewer bytes. * * XXX: but do we need to change the IDBs' snap_len? */ snap_phdr = *phdr; snap_phdr.caplen = snaplen; phdr = &snap_phdr; } if (file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) { /* * XXX - We should do this only for record types * that pertain to a particular interface; for * now, we hardcode that, but we need to figure * out a more general way to handle this. */ if (phdr->rec_type == REC_TYPE_PACKET) { if (!map_phdr_interface_id(phdr, in_file)) { status = MERGE_ERR_BAD_PHDR_INTERFACE_ID; break; } } } if (!wtap_dump(pdh, phdr, wtap_buf_ptr(in_file->wth), err, err_info)) { status = MERGE_ERR_CANT_WRITE_OUTFILE; break; } } if (cb) cb->callback_func(MERGE_EVENT_DONE, count, in_files, in_file_count, cb->data); merge_close_in_files(in_file_count, in_files); if (status == MERGE_OK || status == MERGE_USER_ABORTED) { if (!wtap_dump_close(pdh, err)) status = MERGE_ERR_CANT_CLOSE_OUTFILE; } else { /* * We already got some error; no need to report another error on * close. * * Don't overwrite the earlier error. */ int close_err = 0; (void)wtap_dump_close(pdh, &close_err); } if (status != MERGE_OK) { GString *err_message = NULL; gchar *display_basename = NULL; switch(status) { case MERGE_ERR_CANT_READ_INFILE: *err_info = get_read_error_string(in_files, in_file_count, err, err_info); break; case MERGE_ERR_CANT_WRITE_OUTFILE: /* fall through */ case MERGE_ERR_CANT_CLOSE_OUTFILE: *err_info = get_write_error_string(in_file, file_type, out_filename, err, err_info); break; case MERGE_ERR_BAD_PHDR_INTERFACE_ID: display_basename = g_filename_display_basename(in_file ? in_file->filename : "UNKNOWN"); if (*err_info != NULL) g_free(*err_info); err_message = g_string_new(""); g_string_printf(err_message, "Record %u of \"%s\" has an interface ID which does not match any IDB in its file.", in_file ? in_file->packet_num : 0, display_basename); g_free(display_basename); *err_info = g_string_free(err_message, FALSE); break; case MERGE_USER_ABORTED: /* not really an error */ default: break; } } g_free(in_files); wtap_block_array_free(shb_hdrs); wtap_free_idb_info(idb_inf); return status; }
int main(int argc, char *argv[]) { GString *comp_info_str; GString *runtime_info_str; int opt; DIAG_OFF(cast-qual) static const struct option long_options[] = { {(char *)"help", no_argument, NULL, 'h'}, {(char *)"version", no_argument, NULL, 'V'}, {0, 0, 0, 0 } }; DIAG_ON(cast-qual) gboolean do_append = FALSE; gboolean verbose = FALSE; int in_file_count = 0; guint snaplen = 0; #ifdef PCAP_NG_DEFAULT int file_type = WTAP_FILE_TYPE_SUBTYPE_PCAPNG; /* default to pcap format */ #else int file_type = WTAP_FILE_TYPE_SUBTYPE_PCAP; /* default to pcapng format */ #endif int frame_type = -2; int out_fd; merge_in_file_t *in_files = NULL, *in_file; int i; struct wtap_pkthdr *phdr, snap_phdr; wtap_dumper *pdh; int open_err, read_err = 0, write_err, close_err; gchar *err_info, *write_err_info = NULL; int err_fileno; char *out_filename = NULL; gboolean got_read_error = FALSE, got_write_error = FALSE; int count; cmdarg_err_init(mergecap_cmdarg_err, mergecap_cmdarg_err_cont); #ifdef _WIN32 arg_list_utf_16to8(argc, argv); create_app_running_mutex(); #endif /* _WIN32 */ /* Get the compile-time version information string */ comp_info_str = get_compiled_version_info(NULL, get_mergecap_compiled_info); /* Get the run-time version information string */ runtime_info_str = get_runtime_version_info(get_mergecap_runtime_info); /* Add it to the information to be reported on a crash. */ ws_add_crash_info("Mergecap (Wireshark) %s\n" "\n" "%s" "\n" "%s", get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str); /* Process the options first */ while ((opt = getopt_long(argc, argv, "aF:hs:T:vVw:", long_options, NULL)) != -1) { switch (opt) { case 'a': do_append = !do_append; break; case 'F': file_type = wtap_short_string_to_file_type_subtype(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 'h': printf("Mergecap (Wireshark) %s\n" "Merge two or more capture files into one.\n" "See http://www.wireshark.org for more information.\n", get_ws_vcs_version_info()); print_usage(stdout); exit(0); break; case 's': snaplen = get_positive_int(optarg, "snapshot length"); break; case 'T': 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 'v': verbose = TRUE; break; case 'V': show_version("Mergecap (Wireshark)", comp_info_str, runtime_info_str); g_string_free(comp_info_str, TRUE); g_string_free(runtime_info_str, TRUE); exit(0); break; case 'w': out_filename = optarg; break; case '?': /* Bad options if GNU getopt */ switch(optopt) { case'F': list_capture_types(); break; case'T': list_encap_types(); break; default: print_usage(stderr); } exit(1); break; } } /* check for proper args; at a minimum, must have an output * filename and one input file */ in_file_count = argc - optind; if (!out_filename) { fprintf(stderr, "mergecap: an output filename must be set with -w\n"); fprintf(stderr, " run with -h for help\n"); return 1; } if (in_file_count < 1) { fprintf(stderr, "mergecap: No input files were specified\n"); return 1; } /* open the input files */ 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)); if (err_info != NULL) { fprintf(stderr, "(%s)\n", err_info); g_free(err_info); } 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_subtype_string(wtap_file_type_subtype(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 (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_fd = 1 /*stdout*/; } else { /* open the outfile */ out_fd = ws_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, g_strerror(errno)); exit(1); } } /* prepare the outfile */ if(file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG ){ wtapng_section_t *shb_hdr; GString *comment_gstr; shb_hdr = g_new(wtapng_section_t,1); comment_gstr = g_string_new("File created by merging: \n"); for (i = 0; i < in_file_count; i++) { g_string_append_printf(comment_gstr, "File%d: %s \n",i+1,in_files[i].filename); } shb_hdr->section_length = -1; /* options */ shb_hdr->opt_comment = comment_gstr->str; /* NULL if not available */ shb_hdr->shb_hardware = NULL; /* NULL if not available, UTF-8 string containing the description of the hardware used to create this section. */ shb_hdr->shb_os = NULL; /* NULL if not available, UTF-8 string containing the name of the operating system used to create this section. */ shb_hdr->shb_user_appl = g_strdup("mergecap"); /* NULL if not available, UTF-8 string containing the name of the application used to create this section. */ pdh = wtap_dump_fdopen_ng(out_fd, file_type, frame_type, snaplen, FALSE /* compressed */, shb_hdr, NULL /* wtapng_iface_descriptions_t *idb_inf */, &open_err); g_string_free(comment_gstr, TRUE); } else { 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) */ count = 1; for (;;) { if (do_append) in_file = merge_append_read_packet(in_file_count, in_files, &read_err, &err_info); else in_file = merge_read_packet(in_file_count, in_files, &read_err, &err_info); if (in_file == NULL) { /* EOF */ break; } if (read_err != 0) { /* I/O error reading from in_file */ got_read_error = TRUE; break; } if (verbose) fprintf(stderr, "Record: %d\n", count++); /* We simply write it, perhaps after truncating it; we could do other * things, like modify it. */ phdr = wtap_phdr(in_file->wth); if (snaplen != 0 && phdr->caplen > snaplen) { snap_phdr = *phdr; snap_phdr.caplen = snaplen; phdr = &snap_phdr; } if (!wtap_dump(pdh, phdr, wtap_buf_ptr(in_file->wth), &write_err, &write_err_info)) { got_write_error = TRUE; break; } } merge_close_in_files(in_file_count, in_files); if (!got_write_error) { if (!wtap_dump_close(pdh, &write_err)) got_write_error = TRUE; } else { /* * We already got a write error; no need to report another * write error on close. * * Don't overwrite the earlier write error. */ (void)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)); if (err_info != NULL) { fprintf(stderr, "(%s)\n", err_info); g_free(err_info); } } } } if (got_write_error) { switch (write_err) { case WTAP_ERR_UNWRITABLE_ENCAP: /* * This is a problem with the particular frame we're writing and * the file type and subtype we're wwriting; note that, and * report the frame number and file type/subtype. */ fprintf(stderr, "mergecap: Frame %u of \"%s\" has a network type that can't be saved in a \"%s\" file.\n", in_file ? in_file->packet_num : 0, in_file ? in_file->filename : "UNKNOWN", wtap_file_type_subtype_string(file_type)); break; case WTAP_ERR_PACKET_TOO_LARGE: /* * This is a problem with the particular frame we're writing and * the file type and subtype we're wwriting; note that, and * report the frame number and file type/subtype. */ fprintf(stderr, "mergecap: Frame %u of \"%s\" is too large for a \"%s\" file.\n", in_file ? in_file->packet_num : 0, in_file ? in_file->filename : "UNKNOWN", wtap_file_type_subtype_string(file_type)); break; case WTAP_ERR_UNWRITABLE_REC_TYPE: /* * This is a problem with the particular record we're writing and * the file type and subtype we're wwriting; note that, and * report the record number and file type/subtype. */ fprintf(stderr, "mergecap: Record %u of \"%s\" has a record type that can't be saved in a \"%s\" file.\n", in_file ? in_file->packet_num : 0, in_file ? in_file->filename : "UNKNOWN", wtap_file_type_subtype_string(file_type)); break; case WTAP_ERR_UNWRITABLE_REC_DATA: /* * This is a problem with the particular record we're writing and * the file type and subtype we're wwriting; note that, and * report the record number and file type/subtype. */ fprintf(stderr, "mergecap: Record %u of \"%s\" has data that can't be saved in a \"%s\" file.\n(%s)\n", in_file ? in_file->packet_num : 0, in_file ? in_file->filename : "UNKNOWN", wtap_file_type_subtype_string(file_type), write_err_info != NULL ? write_err_info : "no information supplied"); g_free(write_err_info); break; default: fprintf(stderr, "mergecap: Error writing to outfile: %s\n", wtap_strerror(write_err)); break; } } g_free(in_files); return (!got_read_error && !got_write_error) ? 0 : 2; }