1 /**-*-C-*-**********************************************************************
5 * Utility to convert an ASCII hexdump into a libpcap-format capture file
7 * (c) Copyright 2001 Ashok Narayanan <ashokn@cisco.com>
11 * Wireshark - Network traffic analyzer
12 * By Gerald Combs <gerald@wireshark.org>
13 * Copyright 1998 Gerald Combs
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version 2
18 * of the License, or (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 *******************************************************************************/
31 /*******************************************************************************
33 * This utility reads in an ASCII hexdump of this common format:
35 * 00000000 00 E0 1E A7 05 6F 00 10 5A A0 B9 12 08 00 46 00 .....o..Z.....F.
36 * 00000010 03 68 00 00 00 00 0A 2E EE 33 0F 19 08 7F 0F 19 .h.......3...
\7f..
37 * 00000020 03 80 94 04 00 00 10 01 16 A2 0A 00 03 50 00 0C .............P..
38 * 00000030 01 01 0F 19 03 80 11 01 1E 61 00 0C 03 01 0F 19 .........a......
40 * Each bytestring line consists of an offset, one or more bytes, and
41 * text at the end. An offset is defined as a hex string of more than
42 * two characters. A byte is defined as a hex string of exactly two
43 * characters. The text at the end is ignored, as is any text before
44 * the offset. Bytes read from a bytestring line are added to the
45 * current packet only if all the following conditions are satisfied:
47 * - No text appears between the offset and the bytes (any bytes appearing after
48 * such text would be ignored)
50 * - The offset must be arithmetically correct, i.e. if the offset is 00000020, then
51 * exactly 32 bytes must have been read into this packet before this. If the offset
52 * is wrong, the packet is immediately terminated
54 * A packet start is signaled by a zero offset.
56 * Lines starting with #TEXT2PCAP are directives. These allow the user
57 * to embed instructions into the capture file which allows text2pcap
58 * to take some actions (e.g. specifying the encapsulation
59 * etc.). Currently no directives are implemented.
61 * Lines beginning with # which are not directives are ignored as
62 * comments. Currently all non-hexdump text is ignored by text2pcap;
63 * in the future, text processing may be added, but lines prefixed
64 * with '#' will still be ignored.
66 * The output is a libpcap packet containing Ethernet frames by
67 * default. This program takes options which allow the user to add
68 * dummy Ethernet, IP and UDP or TCP headers to the packets in order
69 * to allow dumps of L3 or higher protocols to be decoded.
71 * Considerable flexibility is built into this code to read hexdumps
72 * of slightly different formats. For example, any text prefixing the
73 * hexdump line is dropped (including mail forwarding '>'). The offset
74 * can be any hex number of four digits or greater.
76 * This converter cannot read a single packet greater than 64KiB-1. Packet
77 * snaplength is automatically set to 64KiB-1.
83 * Just make sure we include the prototype for strptime as well
84 * (needed for glibc 2.2) but make sure we do this only if not
92 # define _XOPEN_SOURCE 600
97 * Defining _XOPEN_SOURCE is needed on some platforms, e.g. platforms
98 * using glibc, to expand the set of things system header files define.
100 * Unfortunately, on other platforms, such as some versions of Solaris
101 * (including Solaris 10), it *reduces* that set as well, causing
102 * strptime() not to be declared, presumably because the version of the
103 * X/Open spec that _XOPEN_SOURCE implies doesn't include strptime() and
104 * blah blah blah namespace pollution blah blah blah.
106 * So we define __EXTENSIONS__ so that "strptime()" is declared.
108 #ifndef __EXTENSIONS__
109 # define __EXTENSIONS__
116 #include <wsutil/file_util.h>
129 #include "wsutil/wsgetopt.h"
132 #ifdef NEED_STRPTIME_H
133 # include "wsutil/strptime.h"
137 #include "text2pcap.h"
138 #include "svnversion.h"
141 #include <wsutil/unicode-utils.h>
144 /*--- Options --------------------------------------------------------------------*/
147 static gboolean use_pcapng = FALSE;
150 static int debug = 0;
152 static int quiet = FALSE;
154 /* Dummy Ethernet header */
155 static int hdr_ethernet = FALSE;
156 static guint32 hdr_ethernet_proto = 0;
158 /* Dummy IP header */
159 static int hdr_ip = FALSE;
160 static long hdr_ip_proto = 0;
162 /* Dummy UDP header */
163 static int hdr_udp = FALSE;
164 static guint32 hdr_dest_port = 0;
165 static guint32 hdr_src_port = 0;
167 /* Dummy TCP header */
168 static int hdr_tcp = FALSE;
170 /* Dummy SCTP header */
171 static int hdr_sctp = FALSE;
172 static guint32 hdr_sctp_src = 0;
173 static guint32 hdr_sctp_dest = 0;
174 static guint32 hdr_sctp_tag = 0;
176 /* Dummy DATA chunk header */
177 static int hdr_data_chunk = FALSE;
178 static guint8 hdr_data_chunk_type = 0;
179 static guint8 hdr_data_chunk_bits = 0;
180 static guint32 hdr_data_chunk_tsn = 0;
181 static guint16 hdr_data_chunk_sid = 0;
182 static guint16 hdr_data_chunk_ssn = 0;
183 static guint32 hdr_data_chunk_ppid = 0;
185 /* ASCII text dump identification */
186 static int identify_ascii = FALSE;
188 static gboolean has_direction = FALSE;
189 static guint32 direction = 0;
191 /*--- Local date -----------------------------------------------------------------*/
193 /* This is where we store the packet currently being built */
194 #define MAX_PACKET 65535
195 static guint8 packet_buf[MAX_PACKET];
196 static guint32 header_length;
197 static guint32 ip_offset;
198 static guint32 curr_offset;
199 static guint32 max_offset = MAX_PACKET;
200 static guint32 packet_start = 0;
201 static void start_new_packet(gboolean);
203 /* This buffer contains strings present before the packet offset 0 */
204 #define PACKET_PREAMBLE_MAX_LEN 2048
205 static guint8 packet_preamble[PACKET_PREAMBLE_MAX_LEN+1];
206 static int packet_preamble_len = 0;
208 /* Number of packets read and written */
209 static guint32 num_packets_read = 0;
210 static guint32 num_packets_written = 0;
211 static guint64 bytes_written = 0;
213 /* Time code of packet, derived from packet_preamble */
214 static time_t ts_sec = 0;
215 static guint32 ts_usec = 0;
216 static char *ts_fmt = NULL;
217 static struct tm timecode_default;
219 static guint8* pkt_lnstart;
222 static const char *input_filename;
223 static FILE *input_file = NULL;
225 static const char *output_filename;
226 static FILE *output_file = NULL;
228 /* Offset base to parse */
229 static guint32 offset_base = 16;
233 /* ----- State machine -----------------------------------------------------------*/
235 /* Current state of parser */
237 INIT, /* Waiting for start of new packet */
238 START_OF_LINE, /* Starting from beginning of line */
239 READ_OFFSET, /* Just read the offset */
240 READ_BYTE, /* Just read a byte */
241 READ_TEXT /* Just read text - ignore until EOL */
243 static parser_state_t state = INIT;
245 static const char *state_str[] = {"Init",
252 static const char *token_str[] = {"",
260 /* ----- Skeleton Packet Headers --------------------------------------------------*/
268 static hdr_ethernet_t HDR_ETHERNET = {
269 {0x0a, 0x02, 0x02, 0x02, 0x02, 0x02},
270 {0x0a, 0x01, 0x01, 0x01, 0x01, 0x01},
276 guint16 packet_length;
277 guint16 identification;
282 guint16 hdr_checksum;
287 static hdr_ip_t HDR_IP = {0x45, 0, 0, 0x3412, 0, 0, 0xff, 0, 0,
288 #ifdef WORDS_BIGENDIAN
289 0x0a010101, 0x0a020202
291 0x0101010a, 0x0202020a
295 static struct { /* pseudo header for checksum calculation */
310 static hdr_udp_t HDR_UDP = {0, 0, 0, 0};
324 static hdr_tcp_t HDR_TCP = {0, 0, 0, 0, 0x50, 0, 0, 0, 0};
333 static hdr_sctp_t HDR_SCTP = {0, 0, 0, 0};
345 static hdr_data_chunk_t HDR_DATA_CHUNK = {0, 0, 0, 0, 0, 0, 0};
347 static char tempbuf[64];
349 /*----------------------------------------------------------------------
350 * Stuff for writing a PCap file
352 #define PCAP_MAGIC 0xa1b2c3d4
353 #define PCAP_SNAPLEN 0xffff
355 /* "libpcap" file header (minus magic number). */
357 guint32 magic; /* magic */
358 guint16 version_major; /* major version number */
359 guint16 version_minor; /* minor version number */
360 guint32 thiszone; /* GMT to local correction */
361 guint32 sigfigs; /* accuracy of timestamps */
362 guint32 snaplen; /* max length of captured packets, in octets */
363 guint32 network; /* data link type */
366 /* "libpcap" record header. */
368 guint32 ts_sec; /* timestamp seconds */
369 guint32 ts_usec; /* timestamp microseconds */
370 guint32 incl_len; /* number of octets of packet saved in file */
371 guint32 orig_len; /* actual length of packet */
374 /* Link-layer type; see net/bpf.h for details */
375 static guint32 pcap_link_type = 1; /* Default is DLT-EN10MB */
377 /*----------------------------------------------------------------------
378 * Parse a single hex number
379 * Will abort the program if it can't parse the number
380 * Pass in TRUE if this is an offset, FALSE if not
383 parse_num (const char *str, int offset)
388 num = (guint32)strtoul(str, &c, offset ? offset_base : 16);
390 fprintf(stderr, "FATAL ERROR: Bad hex number? [%s]\n", str);
396 /*----------------------------------------------------------------------
397 * Write this byte into current packet
400 write_byte (const char *str)
404 num = parse_num(str, FALSE);
405 packet_buf[curr_offset] = (guint8) num;
407 if (curr_offset - header_length >= max_offset) /* packet full */
408 start_new_packet(TRUE);
411 /*----------------------------------------------------------------------
412 * Write a number of bytes into current packet
416 write_bytes(const char bytes[], guint32 nbytes)
420 if (curr_offset + nbytes < MAX_PACKET) {
421 for (i = 0; i < nbytes; i++) {
422 packet_buf[curr_offset] = bytes[i];
428 /*----------------------------------------------------------------------
429 * Remove bytes from the current packet
432 unwrite_bytes (guint32 nbytes)
434 curr_offset -= nbytes;
437 /*----------------------------------------------------------------------
438 * Compute one's complement checksum (from RFC1071)
441 in_checksum (void *buf, guint32 count)
444 guint16 *addr = (guint16 *)buf;
447 /* This is the inner loop */
448 sum += g_ntohs(* (guint16 *) addr);
453 /* Add left-over byte, if any */
455 sum += g_ntohs(* (guint8 *) addr);
457 /* Fold 32-bit sum to 16 bits */
459 sum = (sum & 0xffff) + (sum >> 16);
465 /* The CRC32C code is taken from draft-ietf-tsvwg-sctpcsum-01.txt.
466 * That code is copyrighted by D. Otis and has been modified.
469 #define CRC32C(c,d) (c=(c>>8)^crc_c[(c^(d))&0xFF])
470 static guint32 crc_c[256] =
472 0x00000000L, 0xF26B8303L, 0xE13B70F7L, 0x1350F3F4L,
473 0xC79A971FL, 0x35F1141CL, 0x26A1E7E8L, 0xD4CA64EBL,
474 0x8AD958CFL, 0x78B2DBCCL, 0x6BE22838L, 0x9989AB3BL,
475 0x4D43CFD0L, 0xBF284CD3L, 0xAC78BF27L, 0x5E133C24L,
476 0x105EC76FL, 0xE235446CL, 0xF165B798L, 0x030E349BL,
477 0xD7C45070L, 0x25AFD373L, 0x36FF2087L, 0xC494A384L,
478 0x9A879FA0L, 0x68EC1CA3L, 0x7BBCEF57L, 0x89D76C54L,
479 0x5D1D08BFL, 0xAF768BBCL, 0xBC267848L, 0x4E4DFB4BL,
480 0x20BD8EDEL, 0xD2D60DDDL, 0xC186FE29L, 0x33ED7D2AL,
481 0xE72719C1L, 0x154C9AC2L, 0x061C6936L, 0xF477EA35L,
482 0xAA64D611L, 0x580F5512L, 0x4B5FA6E6L, 0xB93425E5L,
483 0x6DFE410EL, 0x9F95C20DL, 0x8CC531F9L, 0x7EAEB2FAL,
484 0x30E349B1L, 0xC288CAB2L, 0xD1D83946L, 0x23B3BA45L,
485 0xF779DEAEL, 0x05125DADL, 0x1642AE59L, 0xE4292D5AL,
486 0xBA3A117EL, 0x4851927DL, 0x5B016189L, 0xA96AE28AL,
487 0x7DA08661L, 0x8FCB0562L, 0x9C9BF696L, 0x6EF07595L,
488 0x417B1DBCL, 0xB3109EBFL, 0xA0406D4BL, 0x522BEE48L,
489 0x86E18AA3L, 0x748A09A0L, 0x67DAFA54L, 0x95B17957L,
490 0xCBA24573L, 0x39C9C670L, 0x2A993584L, 0xD8F2B687L,
491 0x0C38D26CL, 0xFE53516FL, 0xED03A29BL, 0x1F682198L,
492 0x5125DAD3L, 0xA34E59D0L, 0xB01EAA24L, 0x42752927L,
493 0x96BF4DCCL, 0x64D4CECFL, 0x77843D3BL, 0x85EFBE38L,
494 0xDBFC821CL, 0x2997011FL, 0x3AC7F2EBL, 0xC8AC71E8L,
495 0x1C661503L, 0xEE0D9600L, 0xFD5D65F4L, 0x0F36E6F7L,
496 0x61C69362L, 0x93AD1061L, 0x80FDE395L, 0x72966096L,
497 0xA65C047DL, 0x5437877EL, 0x4767748AL, 0xB50CF789L,
498 0xEB1FCBADL, 0x197448AEL, 0x0A24BB5AL, 0xF84F3859L,
499 0x2C855CB2L, 0xDEEEDFB1L, 0xCDBE2C45L, 0x3FD5AF46L,
500 0x7198540DL, 0x83F3D70EL, 0x90A324FAL, 0x62C8A7F9L,
501 0xB602C312L, 0x44694011L, 0x5739B3E5L, 0xA55230E6L,
502 0xFB410CC2L, 0x092A8FC1L, 0x1A7A7C35L, 0xE811FF36L,
503 0x3CDB9BDDL, 0xCEB018DEL, 0xDDE0EB2AL, 0x2F8B6829L,
504 0x82F63B78L, 0x709DB87BL, 0x63CD4B8FL, 0x91A6C88CL,
505 0x456CAC67L, 0xB7072F64L, 0xA457DC90L, 0x563C5F93L,
506 0x082F63B7L, 0xFA44E0B4L, 0xE9141340L, 0x1B7F9043L,
507 0xCFB5F4A8L, 0x3DDE77ABL, 0x2E8E845FL, 0xDCE5075CL,
508 0x92A8FC17L, 0x60C37F14L, 0x73938CE0L, 0x81F80FE3L,
509 0x55326B08L, 0xA759E80BL, 0xB4091BFFL, 0x466298FCL,
510 0x1871A4D8L, 0xEA1A27DBL, 0xF94AD42FL, 0x0B21572CL,
511 0xDFEB33C7L, 0x2D80B0C4L, 0x3ED04330L, 0xCCBBC033L,
512 0xA24BB5A6L, 0x502036A5L, 0x4370C551L, 0xB11B4652L,
513 0x65D122B9L, 0x97BAA1BAL, 0x84EA524EL, 0x7681D14DL,
514 0x2892ED69L, 0xDAF96E6AL, 0xC9A99D9EL, 0x3BC21E9DL,
515 0xEF087A76L, 0x1D63F975L, 0x0E330A81L, 0xFC588982L,
516 0xB21572C9L, 0x407EF1CAL, 0x532E023EL, 0xA145813DL,
517 0x758FE5D6L, 0x87E466D5L, 0x94B49521L, 0x66DF1622L,
518 0x38CC2A06L, 0xCAA7A905L, 0xD9F75AF1L, 0x2B9CD9F2L,
519 0xFF56BD19L, 0x0D3D3E1AL, 0x1E6DCDEEL, 0xEC064EEDL,
520 0xC38D26C4L, 0x31E6A5C7L, 0x22B65633L, 0xD0DDD530L,
521 0x0417B1DBL, 0xF67C32D8L, 0xE52CC12CL, 0x1747422FL,
522 0x49547E0BL, 0xBB3FFD08L, 0xA86F0EFCL, 0x5A048DFFL,
523 0x8ECEE914L, 0x7CA56A17L, 0x6FF599E3L, 0x9D9E1AE0L,
524 0xD3D3E1ABL, 0x21B862A8L, 0x32E8915CL, 0xC083125FL,
525 0x144976B4L, 0xE622F5B7L, 0xF5720643L, 0x07198540L,
526 0x590AB964L, 0xAB613A67L, 0xB831C993L, 0x4A5A4A90L,
527 0x9E902E7BL, 0x6CFBAD78L, 0x7FAB5E8CL, 0x8DC0DD8FL,
528 0xE330A81AL, 0x115B2B19L, 0x020BD8EDL, 0xF0605BEEL,
529 0x24AA3F05L, 0xD6C1BC06L, 0xC5914FF2L, 0x37FACCF1L,
530 0x69E9F0D5L, 0x9B8273D6L, 0x88D28022L, 0x7AB90321L,
531 0xAE7367CAL, 0x5C18E4C9L, 0x4F48173DL, 0xBD23943EL,
532 0xF36E6F75L, 0x0105EC76L, 0x12551F82L, 0xE03E9C81L,
533 0x34F4F86AL, 0xC69F7B69L, 0xD5CF889DL, 0x27A40B9EL,
534 0x79B737BAL, 0x8BDCB4B9L, 0x988C474DL, 0x6AE7C44EL,
535 0xBE2DA0A5L, 0x4C4623A6L, 0x5F16D052L, 0xAD7D5351L,
539 crc32c(const guint8* buf, unsigned int len, guint32 crc32_init)
545 for (i = 0; i < len; i++)
546 CRC32C(crc32, buf[i]);
552 finalize_crc32c(guint32 crc32)
555 guint8 byte0,byte1,byte2,byte3;
558 byte0 = result & 0xff;
559 byte1 = (result>>8) & 0xff;
560 byte2 = (result>>16) & 0xff;
561 byte3 = (result>>24) & 0xff;
562 result = ((byte0 << 24) | (byte1 << 16) | (byte2 << 8) | byte3);
567 number_of_padding_bytes (guint32 length)
571 remainder = length % 4;
576 return 4 - remainder;
579 /*----------------------------------------------------------------------
580 * Write current packet out
583 write_current_packet(gboolean cont)
586 guint16 padding_length = 0;
590 if (curr_offset > header_length) {
591 /* Write the packet */
593 /* Compute packet length */
594 length = curr_offset;
596 padding_length = number_of_padding_bytes(length - header_length );
600 /* Reset curr_offset, since we now write the headers */
603 /* Write Ethernet header */
605 HDR_ETHERNET.l3pid = g_htons(hdr_ethernet_proto);
606 write_bytes((const char *)&HDR_ETHERNET, sizeof(HDR_ETHERNET));
609 /* Write IP header */
611 HDR_IP.packet_length = g_htons(length - ip_offset + padding_length);
612 HDR_IP.protocol = (guint8) hdr_ip_proto;
613 HDR_IP.hdr_checksum = 0;
614 HDR_IP.hdr_checksum = in_checksum(&HDR_IP, sizeof(HDR_IP));
615 write_bytes((const char *)&HDR_IP, sizeof(HDR_IP));
618 /* Write UDP header */
623 /* initialize pseudo header for checksum calculation */
624 pseudoh.src_addr = HDR_IP.src_addr;
625 pseudoh.dest_addr = HDR_IP.dest_addr;
627 pseudoh.protocol = (guint8) hdr_ip_proto;
628 pseudoh.length = g_htons(length - header_length + sizeof(HDR_UDP));
629 /* initialize the UDP header */
630 HDR_UDP.source_port = g_htons(hdr_src_port);
631 HDR_UDP.dest_port = g_htons(hdr_dest_port);
632 HDR_UDP.length = g_htons(length - header_length + sizeof(HDR_UDP));
633 HDR_UDP.checksum = 0;
634 /* Note: g_ntohs()/g_htons() macro arg may be eval'd twice so calc value before invoking macro */
635 x16 = in_checksum(&pseudoh, sizeof(pseudoh));
637 x16 = in_checksum(&HDR_UDP, sizeof(HDR_UDP));
639 x16 = in_checksum(packet_buf + header_length, length - header_length);
641 x16 = (u & 0xffff) + (u>>16);
642 HDR_UDP.checksum = g_htons(x16);
643 if (HDR_UDP.checksum == 0) /* differentiate between 'none' and 0 */
644 HDR_UDP.checksum = g_htons(1);
645 write_bytes((const char *)&HDR_UDP, sizeof(HDR_UDP));
648 /* Write TCP header */
653 /* initialize pseudo header for checksum calculation */
654 pseudoh.src_addr = HDR_IP.src_addr;
655 pseudoh.dest_addr = HDR_IP.dest_addr;
657 pseudoh.protocol = (guint8) hdr_ip_proto;
658 pseudoh.length = g_htons(length - header_length + sizeof(HDR_TCP));
659 /* initialize the TCP header */
660 HDR_TCP.source_port = g_htons(hdr_src_port);
661 HDR_TCP.dest_port = g_htons(hdr_dest_port);
662 /* HDR_TCP.seq_num already correct */
663 HDR_TCP.window = g_htons(0x2000);
664 HDR_TCP.checksum = 0;
665 /* Note: g_ntohs()/g_htons() macro arg may be eval'd twice so calc value before invoking macro */
666 x16 = in_checksum(&pseudoh, sizeof(pseudoh));
668 x16 = in_checksum(&HDR_TCP, sizeof(HDR_TCP));
670 x16 = in_checksum(packet_buf + header_length, length - header_length);
672 x16 = (u & 0xffff) + (u>>16);
673 HDR_TCP.checksum = g_htons(x16);
674 if (HDR_TCP.checksum == 0) /* differentiate between 'none' and 0 */
675 HDR_TCP.checksum = g_htons(1);
676 write_bytes((const char *)&HDR_TCP, sizeof(HDR_TCP));
677 HDR_TCP.seq_num = g_ntohl(HDR_TCP.seq_num) + length - header_length;
678 HDR_TCP.seq_num = g_htonl(HDR_TCP.seq_num);
681 /* Compute DATA chunk header */
682 if (hdr_data_chunk) {
683 hdr_data_chunk_bits = 0;
684 if (packet_start == 0) {
685 hdr_data_chunk_bits |= 0x02;
688 hdr_data_chunk_bits |= 0x01;
690 HDR_DATA_CHUNK.type = hdr_data_chunk_type;
691 HDR_DATA_CHUNK.bits = hdr_data_chunk_bits;
692 HDR_DATA_CHUNK.length = g_htons(length - header_length + sizeof(HDR_DATA_CHUNK));
693 HDR_DATA_CHUNK.tsn = g_htonl(hdr_data_chunk_tsn);
694 HDR_DATA_CHUNK.sid = g_htons(hdr_data_chunk_sid);
695 HDR_DATA_CHUNK.ssn = g_htons(hdr_data_chunk_ssn);
696 HDR_DATA_CHUNK.ppid = g_htonl(hdr_data_chunk_ppid);
697 hdr_data_chunk_tsn++;
699 hdr_data_chunk_ssn++;
703 /* Write SCTP common header */
707 HDR_SCTP.src_port = g_htons(hdr_sctp_src);
708 HDR_SCTP.dest_port = g_htons(hdr_sctp_dest);
709 HDR_SCTP.tag = g_htonl(hdr_sctp_tag);
710 HDR_SCTP.checksum = g_htonl(0);
711 HDR_SCTP.checksum = crc32c((guint8 *)&HDR_SCTP, sizeof(HDR_SCTP), ~0L);
712 if (hdr_data_chunk) {
713 HDR_SCTP.checksum = crc32c((guint8 *)&HDR_DATA_CHUNK, sizeof(HDR_DATA_CHUNK), HDR_SCTP.checksum);
714 HDR_SCTP.checksum = crc32c((guint8 *)packet_buf + header_length, length - header_length, HDR_SCTP.checksum);
715 HDR_SCTP.checksum = crc32c((guint8 *)&zero, padding_length, HDR_SCTP.checksum);
717 HDR_SCTP.checksum = crc32c((guint8 *)packet_buf + header_length, length - header_length, HDR_SCTP.checksum);
719 HDR_SCTP.checksum = finalize_crc32c(HDR_SCTP.checksum);
720 HDR_SCTP.checksum = g_htonl(HDR_SCTP.checksum);
721 write_bytes((const char *)&HDR_SCTP, sizeof(HDR_SCTP));
724 /* Write DATA chunk header */
725 if (hdr_data_chunk) {
726 write_bytes((const char *)&HDR_DATA_CHUNK, sizeof(HDR_DATA_CHUNK));
729 /* Reset curr_offset, since we now write the trailers */
730 curr_offset = length;
732 /* Write DATA chunk padding */
733 if (hdr_data_chunk && (padding_length > 0)) {
734 memset(tempbuf, 0, padding_length);
735 write_bytes((const char *)&tempbuf, padding_length);
736 length += padding_length;
739 /* Write Ethernet trailer */
740 if (hdr_ethernet && (length < 60)) {
741 memset(tempbuf, 0, 60 - length);
742 write_bytes((const char *)&tempbuf, 60 - length);
746 success = libpcap_write_enhanced_packet_block(libpcap_write_to_file, output_file,
752 packet_buf, direction,
753 &bytes_written, &err);
755 success = libpcap_write_packet(libpcap_write_to_file, output_file,
759 &bytes_written, &err);
762 fprintf(stderr, "File write error [%s] : %s\n",
763 output_filename, g_strerror(err));
766 if (ts_fmt == NULL) {
767 /* fake packet counter */
771 fprintf(stderr, "Wrote packet of %u bytes.\n", length);
773 num_packets_written ++;
776 packet_start += curr_offset - header_length;
777 curr_offset = header_length;
781 /*----------------------------------------------------------------------
782 * Write file header and trailer
785 write_file_header (void)
792 const char *appname = "text2pcap (" SVNVERSION " from " SVNPATH ")";
794 const char *appname = "text2pcap";
798 g_snprintf(comment, sizeof(comment), "Generated from input file %s.", input_filename);
799 success = libpcap_write_session_header_block(libpcap_write_to_file, output_file,
808 success = libpcap_write_interface_description_block(libpcap_write_to_file, output_file,
822 success = libpcap_write_file_header(libpcap_write_to_file, output_file, pcap_link_type, PCAP_SNAPLEN,
823 FALSE, &bytes_written, &err);
826 fprintf(stderr, "File write error [%s] : %s\n",
827 output_filename, g_strerror(err));
833 write_file_trailer (void)
839 success = libpcap_write_interface_statistics_block(libpcap_write_to_file, output_file,
842 "Counters provided by text2pcap",
846 num_packets_written - num_packets_written,
853 fprintf(stderr, "File write error [%s] : %s\n",
854 output_filename, g_strerror(err));
860 /*----------------------------------------------------------------------
861 * Append a token to the packet preamble.
864 append_to_preamble(char *str)
868 if (packet_preamble_len != 0) {
869 if (packet_preamble_len == PACKET_PREAMBLE_MAX_LEN)
870 return; /* no room to add more preamble */
871 /* Add a blank separator between the previous token and this token. */
872 packet_preamble[packet_preamble_len++] = ' ';
874 toklen = strlen(str);
876 if (packet_preamble_len + toklen > PACKET_PREAMBLE_MAX_LEN)
877 return; /* no room to add the token to the preamble */
878 g_strlcpy(&packet_preamble[packet_preamble_len], str, PACKET_PREAMBLE_MAX_LEN);
879 packet_preamble_len += (int) toklen;
882 char xs[PACKET_PREAMBLE_MAX_LEN];
883 g_strlcpy(xs, packet_preamble, PACKET_PREAMBLE_MAX_LEN);
884 while ((c = strchr(xs, '\r')) != NULL) *c=' ';
885 fprintf (stderr, "[[append_to_preamble: \"%s\"]]", xs);
890 /*----------------------------------------------------------------------
891 * Parse the preamble to get the timecode.
895 parse_preamble (void)
904 * Null-terminate the preamble.
906 packet_preamble[packet_preamble_len] = '\0';
908 fprintf(stderr, "[[parse_preamble: \"%s\"]]\n", packet_preamble);
911 switch (packet_preamble[0]) {
914 direction = 0x00000001;
915 packet_preamble[0] = ' ';
919 direction = 0x00000002;
920 packet_preamble[0] = ' ';
923 direction = 0x00000000;
927 while (packet_preamble[i] == ' ' ||
928 packet_preamble[i] == '\r' ||
929 packet_preamble[i] == '\t') {
932 packet_preamble_len -= i;
933 /* Also move the trailing '\0'. */
934 memmove(packet_preamble, packet_preamble + i, packet_preamble_len + 1);
939 * If no "-t" flag was specified, don't attempt to parse the packet
940 * preamble to extract a time stamp.
942 if (ts_fmt == NULL) {
944 packet_preamble_len = 0;
949 * Initialize to today localtime, just in case not all fields
950 * of the date and time are specified.
953 timecode = timecode_default;
956 /* Ensure preamble has more than two chars before attempting to parse.
957 * This should cover line breaks etc that get counted.
959 if (strlen(packet_preamble) > 2) {
960 /* Get Time leaving subseconds */
961 subsecs = strptime( packet_preamble, ts_fmt, &timecode );
962 if (subsecs != NULL) {
963 /* Get the long time from the tm structure */
964 /* (will return -1 if failure) */
965 ts_sec = mktime( &timecode );
967 ts_sec = -1; /* we failed to parse it */
969 /* This will ensure incorrectly parsed dates get set to zero */
971 /* Sanitize - remove all '\r' */
973 while ((c = strchr(packet_preamble, '\r')) != NULL) *c=' ';
974 fprintf (stderr, "Failure processing time \"%s\" using time format \"%s\"\n (defaulting to Jan 1,1970 00:00:00 GMT)\n",
975 packet_preamble, ts_fmt);
977 fprintf(stderr, "timecode: %02d/%02d/%d %02d:%02d:%02d %d\n",
978 timecode.tm_mday, timecode.tm_mon, timecode.tm_year,
979 timecode.tm_hour, timecode.tm_min, timecode.tm_sec, timecode.tm_isdst);
981 ts_sec = 0; /* Jan 1,1970: 00:00 GMT; tshark/wireshark will display date/time as adjusted by timezone */
984 /* Parse subseconds */
985 ts_usec = (guint32)strtol(subsecs, &p, 10);
991 * Convert that number to a number
992 * of microseconds; if it's N digits
993 * long, it's in units of 10^(-N) seconds,
994 * so, to convert it to units of
995 * 10^-6 seconds, we multiply by
998 subseclen = (int) (p - subsecs);
1001 * *More* than 6 digits; 6-N is
1002 * negative, so we divide by
1005 for (i = subseclen - 6; i != 0; i--)
1007 } else if (subseclen < 6) {
1008 for (i = 6 - subseclen; i != 0; i--)
1016 while ((c = strchr(packet_preamble, '\r')) != NULL) *c=' ';
1017 fprintf(stderr, "[[parse_preamble: \"%s\"]]\n", packet_preamble);
1018 fprintf(stderr, "Format(%s), time(%u), subsecs(%u)\n", ts_fmt, (guint32)ts_sec, ts_usec);
1022 /* Clear Preamble */
1023 packet_preamble_len = 0;
1026 /*----------------------------------------------------------------------
1027 * Start a new packet
1030 start_new_packet(gboolean cont)
1033 fprintf(stderr, "Start new packet (cont = %s).\n", cont ? "TRUE" : "FALSE");
1035 /* Write out the current packet, if required */
1036 write_current_packet(cont);
1037 num_packets_read ++;
1039 /* Ensure we parse the packet preamble as it may contain the time */
1043 /*----------------------------------------------------------------------
1044 * Process a directive
1047 process_directive (char *str)
1049 fprintf(stderr, "\n--- Directive [%s] currently unsupported ---\n", str + 10);
1052 /*----------------------------------------------------------------------
1053 * Parse a single token (called from the scanner)
1056 parse_token (token_t token, char *str)
1067 * This is implemented as a simple state machine of five states.
1068 * State transitions are caused by tokens being received from the
1069 * scanner. The code should be self_documenting.
1073 /* Sanitize - remove all '\r' */
1075 if (str!=NULL) { while ((c = strchr(str, '\r')) != NULL) *c=' '; }
1077 fprintf(stderr, "(%s, %s \"%s\") -> (",
1078 state_str[state], token_str[token], str ? str : "");
1083 /* ----- Waiting for new packet -------------------------------------------*/
1087 append_to_preamble(str);
1090 process_directive(str);
1093 num = parse_num(str, TRUE);
1095 /* New packet starts here */
1096 start_new_packet(FALSE);
1097 state = READ_OFFSET;
1098 pkt_lnstart = packet_buf + num;
1102 /* Some describing text may be parsed as offset, but the invalid
1103 offset will be checked in the state of START_OF_LINE, so
1104 we add this transition to gain flexibility */
1105 state = START_OF_LINE;
1112 /* ----- Processing packet, start of new line -----------------------------*/
1116 append_to_preamble(str);
1119 process_directive(str);
1122 num = parse_num(str, TRUE);
1124 /* New packet starts here */
1125 start_new_packet(FALSE);
1127 state = READ_OFFSET;
1128 } else if ((num - packet_start) != curr_offset - header_length) {
1130 * The offset we read isn't the one we expected.
1131 * This may only mean that we mistakenly interpreted
1132 * some text as byte values (e.g., if the text dump
1133 * of packet data included a number with spaces around
1134 * it). If the offset is less than what we expected,
1135 * assume that's the problem, and throw away the putative
1136 * extra byte values.
1138 if (num < curr_offset) {
1139 unwrite_bytes(curr_offset - num);
1140 state = READ_OFFSET;
1142 /* Bad offset; switch to INIT state */
1144 fprintf(stderr, "Inconsistent offset. Expecting %0X, got %0X. Ignoring rest of packet\n",
1146 write_current_packet(FALSE);
1150 state = READ_OFFSET;
1151 pkt_lnstart = packet_buf + num;
1154 state = START_OF_LINE;
1161 /* ----- Processing packet, read offset -----------------------------------*/
1165 /* Record the byte */
1175 state = START_OF_LINE;
1182 /* ----- Processing packet, read byte -------------------------------------*/
1186 /* Record the byte */
1195 if (token == T_EOL) {
1197 state = START_OF_LINE;
1199 if (identify_ascii) {
1200 /* Here a line of pkt bytes reading is finished
1201 compare the ascii and hex to avoid such situation:
1202 "61 62 20 ab ", when ab is ascii dump then it should
1203 not be treat as byte */
1205 /* s2 is the ASCII string, s1 is the HEX string, e.g, when
1206 s2 = "ab ", s1 = "616220"
1207 we should find out the largest tail of s1 matches the head
1208 of s2, it means the matched part in tail is the ASCII dump
1209 of the head byte. These matched should be rollback */
1210 line_size = curr_offset-(int)(pkt_lnstart-packet_buf);
1211 s2 = (char*)g_malloc((line_size+1)/4+1);
1212 /* gather the possible pattern */
1213 for (i = 0; i < (line_size+1)/4; i++) {
1214 tmp_str[0] = pkt_lnstart[i*3];
1215 tmp_str[1] = pkt_lnstart[i*3+1];
1217 /* it is a valid convertable string */
1218 if (!isxdigit(tmp_str[0]) || !isxdigit(tmp_str[0])) {
1221 s2[i] = (char)strtoul(tmp_str, (char **)NULL, 16);
1223 /* the 3rd entry is not a delimiter, so the possible byte pattern will not shown */
1224 if (!(pkt_lnstart[i*3+2] == ' ')) {
1230 /* If packet line start contains possible byte pattern, the line end
1231 should contain the matched pattern if the user open the -a flag.
1232 The packet will be possible invalid if the byte pattern cannot find
1233 a matched one in the line of packet buffer.*/
1235 if (strncmp(pkt_lnstart+line_size-rollback, s2, rollback) == 0) {
1236 unwrite_bytes(rollback);
1238 /* Not matched. This line contains invalid packet bytes, so
1239 discard the whole line */
1241 unwrite_bytes(line_size);
1252 /* ----- Processing packet, read text -------------------------------------*/
1256 state = START_OF_LINE;
1264 fprintf(stderr, "FATAL ERROR: Bad state (%d)", state);
1269 fprintf(stderr, ", %s)\n", state_str[state]);
1273 /*----------------------------------------------------------------------
1274 * Print usage string and exit
1282 " (" SVNVERSION " from " SVNPATH ")"
1285 "Generate a capture file from an ASCII hexdump of packets.\n"
1286 "See http://www.wireshark.org for more information.\n"
1288 "Usage: text2pcap [options] <infile> <outfile>\n"
1290 "where <infile> specifies input filename (use - for standard input)\n"
1291 " <outfile> specifies output filename (use - for standard output)\n"
1294 " -o hex|oct|dec parse offsets as (h)ex, (o)ctal or (d)ecimal;\n"
1295 " default is hex.\n"
1296 " -t <timefmt> treat the text before the packet as a date/time code;\n"
1297 " the specified argument is a format string of the sort\n"
1298 " supported by strptime.\n"
1299 " Example: The time \"10:15:14.5476\" has the format code\n"
1300 " \"%%H:%%M:%%S.\"\n"
1301 " NOTE: The subsecond component delimiter, '.', must be\n"
1302 " given, but no pattern is required; the remaining\n"
1303 " number is assumed to be fractions of a second.\n"
1304 " NOTE: Date/time fields from the current date/time are\n"
1305 " used as the default for unspecified fields.\n"
1306 " -D the text before the packet starts with an I or an O,\n"
1307 " indicating that the packet is inbound or outbound.\n"
1308 " This is only stored if the output format is PCAP-NG.\n"
1309 " -a enable ASCII text dump identification.\n"
1310 " The start of the ASCII text dump can be identified\n"
1311 " and excluded from the packet data, even if it looks\n"
1312 " like a HEX dump.\n"
1313 " NOTE: Do not enable it if the input file does not\n"
1314 " contain the ASCII text dump.\n"
1317 " -l <typenum> link-layer type number; default is 1 (Ethernet). See\n"
1318 " http://www.tcpdump.org/linktypes.html for a list of\n"
1319 " numbers. Use this option if your dump is a complete\n"
1320 " hex dump of an encapsulated packet and you wish to\n"
1321 " specify the exact type of encapsulation.\n"
1322 " Example: -l 7 for ARCNet packets.\n"
1323 " -m <max-packet> max packet length in output; default is %d\n"
1325 "Prepend dummy header:\n"
1326 " -e <l3pid> prepend dummy Ethernet II header with specified L3PID\n"
1328 " Example: -e 0x806 to specify an ARP packet.\n"
1329 " -i <proto> prepend dummy IP header with specified IP protocol\n"
1331 " Automatically prepends Ethernet header as well.\n"
1333 " -u <srcp>,<destp> prepend dummy UDP header with specified\n"
1334 " source and destination ports (in DECIMAL).\n"
1335 " Automatically prepends Ethernet & IP headers as well.\n"
1336 " Example: -u 1000,69 to make the packets look like\n"
1337 " TFTP/UDP packets.\n"
1338 " -T <srcp>,<destp> prepend dummy TCP header with specified\n"
1339 " source and destination ports (in DECIMAL).\n"
1340 " Automatically prepends Ethernet & IP headers as well.\n"
1341 " Example: -T 50,60\n"
1342 " -s <srcp>,<dstp>,<tag> prepend dummy SCTP header with specified\n"
1343 " source/dest ports and verification tag (in DECIMAL).\n"
1344 " Automatically prepends Ethernet & IP headers as well.\n"
1345 " Example: -s 30,40,34\n"
1346 " -S <srcp>,<dstp>,<ppi> prepend dummy SCTP header with specified\n"
1347 " source/dest ports and verification tag 0.\n"
1348 " Automatically prepends a dummy SCTP DATA\n"
1349 " chunk header with payload protocol identifier ppi.\n"
1350 " Example: -S 30,40,34\n"
1353 " -h display this help and exit.\n"
1354 " -d show detailed debug of parser states.\n"
1355 " -q generate no output at all (automatically disables -d).\n"
1356 " -n use PCAP-NG instead of PCAP as output format.\n"
1358 VERSION, MAX_PACKET);
1363 /*----------------------------------------------------------------------
1367 parse_options (int argc, char *argv[])
1373 arg_list_utf_16to8(argc, argv);
1374 create_app_running_mutex();
1377 /* Scan CLI parameters */
1378 while ((c = getopt(argc, argv, "Ddhqe:i:l:m:no:u:s:S:t:T:a")) != -1) {
1380 case '?': usage(); break;
1381 case 'h': usage(); break;
1382 case 'd': if (!quiet) debug++; break;
1383 case 'D': has_direction = TRUE; break;
1384 case 'q': quiet = TRUE; debug = FALSE; break;
1385 case 'l': pcap_link_type = (guint32)strtol(optarg, NULL, 0); break;
1386 case 'm': max_offset = (guint32)strtol(optarg, NULL, 0); break;
1387 case 'n': use_pcapng = TRUE; break;
1389 if (optarg[0]!='h' && optarg[0] != 'o' && optarg[0] != 'd') {
1390 fprintf(stderr, "Bad argument for '-o': %s\n", optarg);
1394 case 'o': offset_base = 8; break;
1395 case 'h': offset_base = 16; break;
1396 case 'd': offset_base = 10; break;
1400 hdr_ethernet = TRUE;
1401 if (sscanf(optarg, "%x", &hdr_ethernet_proto) < 1) {
1402 fprintf(stderr, "Bad argument for '-e': %s\n", optarg);
1409 hdr_ip_proto = strtol(optarg, &p, 10);
1410 if (p == optarg || *p != '\0' || hdr_ip_proto < 0 ||
1411 hdr_ip_proto > 255) {
1412 fprintf(stderr, "Bad argument for '-i': %s\n", optarg);
1415 hdr_ethernet = TRUE;
1416 hdr_ethernet_proto = 0x800;
1421 hdr_data_chunk = FALSE;
1424 hdr_sctp_src = (guint32)strtol(optarg, &p, 10);
1425 if (p == optarg || (*p != ',' && *p != '\0')) {
1426 fprintf(stderr, "Bad src port for '-%c'\n", c);
1430 fprintf(stderr, "No dest port specified for '-%c'\n", c);
1435 hdr_sctp_dest = (guint32)strtol(optarg, &p, 10);
1436 if (p == optarg || (*p != ',' && *p != '\0')) {
1437 fprintf(stderr, "Bad dest port for '-s'\n");
1441 fprintf(stderr, "No tag specified for '-%c'\n", c);
1446 hdr_sctp_tag = (guint32)strtol(optarg, &p, 10);
1447 if (p == optarg || *p != '\0') {
1448 fprintf(stderr, "Bad tag for '-%c'\n", c);
1454 hdr_ethernet = TRUE;
1455 hdr_ethernet_proto = 0x800;
1459 hdr_data_chunk = TRUE;
1462 hdr_sctp_src = (guint32)strtol(optarg, &p, 10);
1463 if (p == optarg || (*p != ',' && *p != '\0')) {
1464 fprintf(stderr, "Bad src port for '-%c'\n", c);
1468 fprintf(stderr, "No dest port specified for '-%c'\n", c);
1473 hdr_sctp_dest = (guint32)strtol(optarg, &p, 10);
1474 if (p == optarg || (*p != ',' && *p != '\0')) {
1475 fprintf(stderr, "Bad dest port for '-s'\n");
1479 fprintf(stderr, "No ppi specified for '-%c'\n", c);
1484 hdr_data_chunk_ppid = (guint32)strtoul(optarg, &p, 10);
1485 if (p == optarg || *p != '\0') {
1486 fprintf(stderr, "Bad ppi for '-%c'\n", c);
1492 hdr_ethernet = TRUE;
1493 hdr_ethernet_proto = 0x800;
1504 hdr_data_chunk = FALSE;
1505 hdr_src_port = (guint32)strtol(optarg, &p, 10);
1506 if (p == optarg || (*p != ',' && *p != '\0')) {
1507 fprintf(stderr, "Bad src port for '-u'\n");
1511 fprintf(stderr, "No dest port specified for '-u'\n");
1516 hdr_dest_port = (guint32)strtol(optarg, &p, 10);
1517 if (p == optarg || *p != '\0') {
1518 fprintf(stderr, "Bad dest port for '-u'\n");
1523 hdr_ethernet = TRUE;
1524 hdr_ethernet_proto = 0x800;
1531 hdr_data_chunk = FALSE;
1532 hdr_src_port = (guint32)strtol(optarg, &p, 10);
1533 if (p == optarg || (*p != ',' && *p != '\0')) {
1534 fprintf(stderr, "Bad src port for '-T'\n");
1538 fprintf(stderr, "No dest port specified for '-u'\n");
1543 hdr_dest_port = (guint32)strtol(optarg, &p, 10);
1544 if (p == optarg || *p != '\0') {
1545 fprintf(stderr, "Bad dest port for '-T'\n");
1550 hdr_ethernet = TRUE;
1551 hdr_ethernet_proto = 0x800;
1555 identify_ascii = TRUE;
1563 if (optind >= argc || argc-optind < 2) {
1564 fprintf(stderr, "Must specify input and output filename\n");
1568 if (strcmp(argv[optind], "-")) {
1569 input_filename = g_strdup(argv[optind]);
1570 input_file = ws_fopen(input_filename, "rb");
1572 fprintf(stderr, "Cannot open file [%s] for reading: %s\n",
1573 input_filename, g_strerror(errno));
1577 input_filename = "Standard input";
1581 if (strcmp(argv[optind+1], "-")) {
1582 output_filename = g_strdup(argv[optind+1]);
1583 output_file = ws_fopen(output_filename, "wb");
1585 fprintf(stderr, "Cannot open file [%s] for writing: %s\n",
1586 output_filename, g_strerror(errno));
1590 output_filename = "Standard output";
1591 output_file = stdout;
1594 /* Some validation */
1595 if (pcap_link_type != 1 && hdr_ethernet) {
1596 fprintf(stderr, "Dummy headers (-e, -i, -u, -s, -S -T) cannot be specified with link type override (-l)\n");
1600 /* Set up our variables */
1603 input_filename = "Standard input";
1606 output_file = stdout;
1607 output_filename = "Standard output";
1610 ts_sec = time(0); /* initialize to current time */
1611 timecode_default = *localtime(&ts_sec);
1612 timecode_default.tm_isdst = -1; /* Unknown for now, depends on time given to the strptime() function */
1614 /* Display summary of our state */
1616 fprintf(stderr, "Input from: %s\n", input_filename);
1617 fprintf(stderr, "Output to: %s\n", output_filename);
1618 fprintf(stderr, "Output format: %s\n", use_pcapng ? "PCAP-NG" : "PCAP");
1620 if (hdr_ethernet) fprintf(stderr, "Generate dummy Ethernet header: Protocol: 0x%0X\n",
1621 hdr_ethernet_proto);
1622 if (hdr_ip) fprintf(stderr, "Generate dummy IP header: Protocol: %ld\n",
1624 if (hdr_udp) fprintf(stderr, "Generate dummy UDP header: Source port: %u. Dest port: %u\n",
1625 hdr_src_port, hdr_dest_port);
1626 if (hdr_tcp) fprintf(stderr, "Generate dummy TCP header: Source port: %u. Dest port: %u\n",
1627 hdr_src_port, hdr_dest_port);
1628 if (hdr_sctp) fprintf(stderr, "Generate dummy SCTP header: Source port: %u. Dest port: %u. Tag: %u\n",
1629 hdr_sctp_src, hdr_sctp_dest, hdr_sctp_tag);
1630 if (hdr_data_chunk) fprintf(stderr, "Generate dummy DATA chunk header: TSN: %u. SID: %d. SSN: %d. PPID: %u\n",
1631 hdr_data_chunk_tsn, hdr_data_chunk_sid, hdr_data_chunk_ssn, hdr_data_chunk_ppid);
1636 main(int argc, char *argv[])
1638 parse_options(argc, argv);
1640 assert(input_file != NULL);
1641 assert(output_file != NULL);
1643 write_file_header();
1647 header_length += (int)sizeof(HDR_ETHERNET);
1650 ip_offset = header_length;
1651 header_length += (int)sizeof(HDR_IP);
1654 header_length += (int)sizeof(HDR_SCTP);
1656 if (hdr_data_chunk) {
1657 header_length += (int)sizeof(HDR_DATA_CHUNK);
1660 header_length += (int)sizeof(HDR_TCP);
1663 header_length += (int)sizeof(HDR_UDP);
1665 curr_offset = header_length;
1670 write_current_packet(FALSE);
1671 write_file_trailer();
1673 fclose(output_file);
1675 fprintf(stderr, "\n-------------------------\n");
1677 fprintf(stderr, "Read %u potential packet%s, wrote %u packet%s (%" G_GINT64_MODIFIER "u byte%s).\n",
1678 num_packets_read, (num_packets_read == 1) ? "" : "s",
1679 num_packets_written, (num_packets_written == 1) ? "" : "s",
1680 bytes_written, (bytes_written == 1) ? "" : "s");
1686 * Editor modelines - http://www.wireshark.org/tools/modelines.html
1691 * indent-tabs-mode: nil
1694 * vi: set shiftwidth=4 tabstop=4 expandtab:
1695 * :indentSize=4:tabSize=4:noTabs=true: