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"
141 #include <wsutil/unicode-utils.h>
144 #ifdef HAVE_ARPA_INET_H
145 #include <arpa/inet.h>
148 #ifdef HAVE_WINSOCK2_H
149 #include <winsock2.h> /* needed to define AF_ values on Windows */
152 #ifndef HAVE_INET_ATON_H
153 # include "wsutil/inet_aton.h"
156 #ifdef HAVE_SYS_SOCKET_H
157 #include <sys/socket.h>
160 #ifdef NEED_INET_V6DEFS_H
161 # include "wsutil/inet_v6defs.h"
164 /*--- Options --------------------------------------------------------------------*/
167 static gboolean use_pcapng = FALSE;
170 static int debug = 0;
172 static int quiet = FALSE;
174 /* Dummy Ethernet header */
175 static int hdr_ethernet = FALSE;
176 static guint32 hdr_ethernet_proto = 0;
178 /* Dummy IP header */
179 static int hdr_ip = FALSE;
180 static int hdr_ipv6 = FALSE;
181 static long hdr_ip_proto = 0;
183 /* Destination and source addresses for IP header */
184 static guint32 hdr_ip_dest_addr = 0;
185 static guint32 hdr_ip_src_addr = 0;
186 static guint8 hdr_ipv6_dest_addr[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
187 static guint8 hdr_ipv6_src_addr[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
188 static guint8 NO_IPv6_ADDRESS[16] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
190 /* Dummy UDP header */
191 static int hdr_udp = FALSE;
192 static guint32 hdr_dest_port = 0;
193 static guint32 hdr_src_port = 0;
195 /* Dummy TCP header */
196 static int hdr_tcp = FALSE;
198 /* Dummy SCTP header */
199 static int hdr_sctp = FALSE;
200 static guint32 hdr_sctp_src = 0;
201 static guint32 hdr_sctp_dest = 0;
202 static guint32 hdr_sctp_tag = 0;
204 /* Dummy DATA chunk header */
205 static int hdr_data_chunk = FALSE;
206 static guint8 hdr_data_chunk_type = 0;
207 static guint8 hdr_data_chunk_bits = 0;
208 static guint32 hdr_data_chunk_tsn = 0;
209 static guint16 hdr_data_chunk_sid = 0;
210 static guint16 hdr_data_chunk_ssn = 0;
211 static guint32 hdr_data_chunk_ppid = 0;
213 /* ASCII text dump identification */
214 static int identify_ascii = FALSE;
216 static gboolean has_direction = FALSE;
217 static guint32 direction = 0;
219 /*--- Local date -----------------------------------------------------------------*/
221 /* This is where we store the packet currently being built */
222 #define MAX_PACKET 65535
223 static guint8 packet_buf[MAX_PACKET];
224 static guint32 header_length;
225 static guint32 ip_offset;
226 static guint32 curr_offset;
227 static guint32 max_offset = MAX_PACKET;
228 static guint32 packet_start = 0;
230 static void start_new_packet(gboolean);
232 /* This buffer contains strings present before the packet offset 0 */
233 #define PACKET_PREAMBLE_MAX_LEN 2048
234 static guint8 packet_preamble[PACKET_PREAMBLE_MAX_LEN+1];
235 static int packet_preamble_len = 0;
237 /* Number of packets read and written */
238 static guint32 num_packets_read = 0;
239 static guint32 num_packets_written = 0;
240 static guint64 bytes_written = 0;
242 /* Time code of packet, derived from packet_preamble */
243 static time_t ts_sec = 0;
244 static guint32 ts_usec = 0;
245 static char *ts_fmt = NULL;
246 static struct tm timecode_default;
248 static guint8* pkt_lnstart;
251 static const char *input_filename;
252 static FILE *input_file = NULL;
254 static const char *output_filename;
255 static FILE *output_file = NULL;
257 /* Offset base to parse */
258 static guint32 offset_base = 16;
262 /* ----- State machine -----------------------------------------------------------*/
264 /* Current state of parser */
266 INIT, /* Waiting for start of new packet */
267 START_OF_LINE, /* Starting from beginning of line */
268 READ_OFFSET, /* Just read the offset */
269 READ_BYTE, /* Just read a byte */
270 READ_TEXT /* Just read text - ignore until EOL */
272 static parser_state_t state = INIT;
274 static const char *state_str[] = {"Init",
281 static const char *token_str[] = {"",
289 /* ----- Skeleton Packet Headers --------------------------------------------------*/
297 static hdr_ethernet_t HDR_ETHERNET = {
298 {0x0a, 0x02, 0x02, 0x02, 0x02, 0x02},
299 {0x0a, 0x01, 0x01, 0x01, 0x01, 0x01},
305 guint16 packet_length;
306 guint16 identification;
311 guint16 hdr_checksum;
316 static hdr_ip_t HDR_IP = {0x45, 0, 0, 0x3412, 0, 0, 0xff, 0, 0,
317 #ifdef WORDS_BIGENDIAN
318 0x0a010101, 0x0a020202
320 0x0101010a, 0x0202020a
324 static struct { /* pseudo header for checksum calculation */
333 /* headers taken from glibc */
340 guint8 __u6_addr8[16];
341 guint16 __u6_addr16[8];
342 guint32 __u6_addr32[4];
349 guint32 ip6_un1_flow; /* 24 bits of flow-ID */
350 guint16 ip6_un1_plen; /* payload length */
351 guint8 ip6_un1_nxt; /* next header */
352 guint8 ip6_un1_hlim; /* hop limit */
354 guint8 ip6_un2_vfc; /* 4 bits version, 4 bits priority */
356 struct hdr_in6_addr ip6_src; /* source address */
357 struct hdr_in6_addr ip6_dst; /* destination address */
360 static hdr_ipv6_t HDR_IPv6;
362 static struct { /* pseudo header ipv6 for checksum calculation */
363 struct hdr_in6_addr src_addr6;
364 struct hdr_in6_addr dst_addr6;
377 static hdr_udp_t HDR_UDP = {0, 0, 0, 0};
391 static hdr_tcp_t HDR_TCP = {0, 0, 0, 0, 0x50, 0, 0, 0, 0};
400 static hdr_sctp_t HDR_SCTP = {0, 0, 0, 0};
412 static hdr_data_chunk_t HDR_DATA_CHUNK = {0, 0, 0, 0, 0, 0, 0};
414 static char tempbuf[64];
416 /*----------------------------------------------------------------------
417 * Stuff for writing a PCap file
419 #define PCAP_MAGIC 0xa1b2c3d4
420 #define PCAP_SNAPLEN 0xffff
422 /* "libpcap" file header (minus magic number). */
424 guint32 magic; /* magic */
425 guint16 version_major; /* major version number */
426 guint16 version_minor; /* minor version number */
427 guint32 thiszone; /* GMT to local correction */
428 guint32 sigfigs; /* accuracy of timestamps */
429 guint32 snaplen; /* max length of captured packets, in octets */
430 guint32 network; /* data link type */
433 /* "libpcap" record header. */
435 guint32 ts_sec; /* timestamp seconds */
436 guint32 ts_usec; /* timestamp microseconds */
437 guint32 incl_len; /* number of octets of packet saved in file */
438 guint32 orig_len; /* actual length of packet */
441 /* Link-layer type; see http://www.tcpdump.org/linktypes.html for details */
442 static guint32 pcap_link_type = 1; /* Default is LINKTYPE_ETHERNET */
444 /*----------------------------------------------------------------------
445 * Parse a single hex number
446 * Will abort the program if it can't parse the number
447 * Pass in TRUE if this is an offset, FALSE if not
450 parse_num (const char *str, int offset)
455 num = (guint32)strtoul(str, &c, offset ? offset_base : 16);
457 fprintf(stderr, "FATAL ERROR: Bad hex number? [%s]\n", str);
463 /*----------------------------------------------------------------------
464 * Write this byte into current packet
467 write_byte (const char *str)
471 num = parse_num(str, FALSE);
472 packet_buf[curr_offset] = (guint8) num;
474 if (curr_offset - header_length >= max_offset) /* packet full */
475 start_new_packet(TRUE);
478 /*----------------------------------------------------------------------
479 * Write a number of bytes into current packet
483 write_bytes (const char bytes[], guint32 nbytes)
487 if (curr_offset + nbytes < MAX_PACKET) {
488 for (i = 0; i < nbytes; i++) {
489 packet_buf[curr_offset] = bytes[i];
495 /*----------------------------------------------------------------------
496 * Remove bytes from the current packet
499 unwrite_bytes (guint32 nbytes)
501 curr_offset -= nbytes;
504 /*----------------------------------------------------------------------
505 * Compute one's complement checksum (from RFC1071)
508 in_checksum (void *buf, guint32 count)
511 guint16 *addr = (guint16 *)buf;
514 /* This is the inner loop */
515 sum += g_ntohs(* (guint16 *) addr);
520 /* Add left-over byte, if any */
522 sum += g_ntohs(* (guint8 *) addr);
524 /* Fold 32-bit sum to 16 bits */
526 sum = (sum & 0xffff) + (sum >> 16);
532 /* The CRC32C code is taken from draft-ietf-tsvwg-sctpcsum-01.txt.
533 * That code is copyrighted by D. Otis and has been modified.
536 #define CRC32C(c,d) (c=(c>>8)^crc_c[(c^(d))&0xFF])
537 static guint32 crc_c[256] =
539 0x00000000U, 0xF26B8303U, 0xE13B70F7U, 0x1350F3F4U,
540 0xC79A971FU, 0x35F1141CU, 0x26A1E7E8U, 0xD4CA64EBU,
541 0x8AD958CFU, 0x78B2DBCCU, 0x6BE22838U, 0x9989AB3BU,
542 0x4D43CFD0U, 0xBF284CD3U, 0xAC78BF27U, 0x5E133C24U,
543 0x105EC76FU, 0xE235446CU, 0xF165B798U, 0x030E349BU,
544 0xD7C45070U, 0x25AFD373U, 0x36FF2087U, 0xC494A384U,
545 0x9A879FA0U, 0x68EC1CA3U, 0x7BBCEF57U, 0x89D76C54U,
546 0x5D1D08BFU, 0xAF768BBCU, 0xBC267848U, 0x4E4DFB4BU,
547 0x20BD8EDEU, 0xD2D60DDDU, 0xC186FE29U, 0x33ED7D2AU,
548 0xE72719C1U, 0x154C9AC2U, 0x061C6936U, 0xF477EA35U,
549 0xAA64D611U, 0x580F5512U, 0x4B5FA6E6U, 0xB93425E5U,
550 0x6DFE410EU, 0x9F95C20DU, 0x8CC531F9U, 0x7EAEB2FAU,
551 0x30E349B1U, 0xC288CAB2U, 0xD1D83946U, 0x23B3BA45U,
552 0xF779DEAEU, 0x05125DADU, 0x1642AE59U, 0xE4292D5AU,
553 0xBA3A117EU, 0x4851927DU, 0x5B016189U, 0xA96AE28AU,
554 0x7DA08661U, 0x8FCB0562U, 0x9C9BF696U, 0x6EF07595U,
555 0x417B1DBCU, 0xB3109EBFU, 0xA0406D4BU, 0x522BEE48U,
556 0x86E18AA3U, 0x748A09A0U, 0x67DAFA54U, 0x95B17957U,
557 0xCBA24573U, 0x39C9C670U, 0x2A993584U, 0xD8F2B687U,
558 0x0C38D26CU, 0xFE53516FU, 0xED03A29BU, 0x1F682198U,
559 0x5125DAD3U, 0xA34E59D0U, 0xB01EAA24U, 0x42752927U,
560 0x96BF4DCCU, 0x64D4CECFU, 0x77843D3BU, 0x85EFBE38U,
561 0xDBFC821CU, 0x2997011FU, 0x3AC7F2EBU, 0xC8AC71E8U,
562 0x1C661503U, 0xEE0D9600U, 0xFD5D65F4U, 0x0F36E6F7U,
563 0x61C69362U, 0x93AD1061U, 0x80FDE395U, 0x72966096U,
564 0xA65C047DU, 0x5437877EU, 0x4767748AU, 0xB50CF789U,
565 0xEB1FCBADU, 0x197448AEU, 0x0A24BB5AU, 0xF84F3859U,
566 0x2C855CB2U, 0xDEEEDFB1U, 0xCDBE2C45U, 0x3FD5AF46U,
567 0x7198540DU, 0x83F3D70EU, 0x90A324FAU, 0x62C8A7F9U,
568 0xB602C312U, 0x44694011U, 0x5739B3E5U, 0xA55230E6U,
569 0xFB410CC2U, 0x092A8FC1U, 0x1A7A7C35U, 0xE811FF36U,
570 0x3CDB9BDDU, 0xCEB018DEU, 0xDDE0EB2AU, 0x2F8B6829U,
571 0x82F63B78U, 0x709DB87BU, 0x63CD4B8FU, 0x91A6C88CU,
572 0x456CAC67U, 0xB7072F64U, 0xA457DC90U, 0x563C5F93U,
573 0x082F63B7U, 0xFA44E0B4U, 0xE9141340U, 0x1B7F9043U,
574 0xCFB5F4A8U, 0x3DDE77ABU, 0x2E8E845FU, 0xDCE5075CU,
575 0x92A8FC17U, 0x60C37F14U, 0x73938CE0U, 0x81F80FE3U,
576 0x55326B08U, 0xA759E80BU, 0xB4091BFFU, 0x466298FCU,
577 0x1871A4D8U, 0xEA1A27DBU, 0xF94AD42FU, 0x0B21572CU,
578 0xDFEB33C7U, 0x2D80B0C4U, 0x3ED04330U, 0xCCBBC033U,
579 0xA24BB5A6U, 0x502036A5U, 0x4370C551U, 0xB11B4652U,
580 0x65D122B9U, 0x97BAA1BAU, 0x84EA524EU, 0x7681D14DU,
581 0x2892ED69U, 0xDAF96E6AU, 0xC9A99D9EU, 0x3BC21E9DU,
582 0xEF087A76U, 0x1D63F975U, 0x0E330A81U, 0xFC588982U,
583 0xB21572C9U, 0x407EF1CAU, 0x532E023EU, 0xA145813DU,
584 0x758FE5D6U, 0x87E466D5U, 0x94B49521U, 0x66DF1622U,
585 0x38CC2A06U, 0xCAA7A905U, 0xD9F75AF1U, 0x2B9CD9F2U,
586 0xFF56BD19U, 0x0D3D3E1AU, 0x1E6DCDEEU, 0xEC064EEDU,
587 0xC38D26C4U, 0x31E6A5C7U, 0x22B65633U, 0xD0DDD530U,
588 0x0417B1DBU, 0xF67C32D8U, 0xE52CC12CU, 0x1747422FU,
589 0x49547E0BU, 0xBB3FFD08U, 0xA86F0EFCU, 0x5A048DFFU,
590 0x8ECEE914U, 0x7CA56A17U, 0x6FF599E3U, 0x9D9E1AE0U,
591 0xD3D3E1ABU, 0x21B862A8U, 0x32E8915CU, 0xC083125FU,
592 0x144976B4U, 0xE622F5B7U, 0xF5720643U, 0x07198540U,
593 0x590AB964U, 0xAB613A67U, 0xB831C993U, 0x4A5A4A90U,
594 0x9E902E7BU, 0x6CFBAD78U, 0x7FAB5E8CU, 0x8DC0DD8FU,
595 0xE330A81AU, 0x115B2B19U, 0x020BD8EDU, 0xF0605BEEU,
596 0x24AA3F05U, 0xD6C1BC06U, 0xC5914FF2U, 0x37FACCF1U,
597 0x69E9F0D5U, 0x9B8273D6U, 0x88D28022U, 0x7AB90321U,
598 0xAE7367CAU, 0x5C18E4C9U, 0x4F48173DU, 0xBD23943EU,
599 0xF36E6F75U, 0x0105EC76U, 0x12551F82U, 0xE03E9C81U,
600 0x34F4F86AU, 0xC69F7B69U, 0xD5CF889DU, 0x27A40B9EU,
601 0x79B737BAU, 0x8BDCB4B9U, 0x988C474DU, 0x6AE7C44EU,
602 0xBE2DA0A5U, 0x4C4623A6U, 0x5F16D052U, 0xAD7D5351U,
606 crc32c (const guint8* buf, unsigned int len, guint32 crc32_init)
612 for (i = 0; i < len; i++)
613 CRC32C(crc32, buf[i]);
619 finalize_crc32c (guint32 crc32)
622 guint8 byte0,byte1,byte2,byte3;
625 byte0 = result & 0xff;
626 byte1 = (result>>8) & 0xff;
627 byte2 = (result>>16) & 0xff;
628 byte3 = (result>>24) & 0xff;
629 result = ((byte0 << 24) | (byte1 << 16) | (byte2 << 8) | byte3);
634 number_of_padding_bytes (guint32 length)
638 remainder = length % 4;
643 return 4 - remainder;
646 /*----------------------------------------------------------------------
647 * Write current packet out
650 write_current_packet (gboolean cont)
653 guint16 padding_length = 0;
658 if (curr_offset > header_length) {
659 /* Write the packet */
661 /* if defined IPv6 we should rewrite hdr_ethernet_proto anyways */
663 hdr_ethernet_proto = 0x86DD;
667 /* Compute packet length */
668 length = curr_offset;
670 padding_length = number_of_padding_bytes(length - header_length );
674 /* Reset curr_offset, since we now write the headers */
677 /* Write Ethernet header */
679 HDR_ETHERNET.l3pid = g_htons(hdr_ethernet_proto);
680 write_bytes((const char *)&HDR_ETHERNET, sizeof(HDR_ETHERNET));
683 /* Write IP header */
685 if (hdr_ip_src_addr) HDR_IP.src_addr = hdr_ip_src_addr;
686 if (hdr_ip_dest_addr) HDR_IP.dest_addr = hdr_ip_dest_addr;
688 HDR_IP.packet_length = g_htons(length - ip_offset + padding_length);
689 HDR_IP.protocol = (guint8) hdr_ip_proto;
690 HDR_IP.hdr_checksum = 0;
691 HDR_IP.hdr_checksum = in_checksum(&HDR_IP, sizeof(HDR_IP));
692 write_bytes((const char *)&HDR_IP, sizeof(HDR_IP));
693 } else if (hdr_ipv6) {
694 if (memcmp(hdr_ipv6_src_addr, NO_IPv6_ADDRESS, sizeof(struct hdr_in6_addr)))
695 memcpy(&HDR_IPv6.ip6_src, &hdr_ipv6_src_addr, sizeof(struct hdr_in6_addr));
696 if (memcmp(hdr_ipv6_dest_addr, NO_IPv6_ADDRESS, sizeof(struct hdr_in6_addr)))
697 memcpy(&HDR_IPv6.ip6_dst, &hdr_ipv6_dest_addr, sizeof(struct hdr_in6_addr));
699 HDR_IPv6.ip6_ctlun.ip6_un2_vfc &= 0x0F;
700 HDR_IPv6.ip6_ctlun.ip6_un2_vfc |= (6<< 4);
701 HDR_IPv6.ip6_ctlun.ip6_un1.ip6_un1_plen = g_htons(length - ip_offset + padding_length);
702 HDR_IPv6.ip6_ctlun.ip6_un1.ip6_un1_nxt = (guint8) hdr_ip_proto;
703 HDR_IPv6.ip6_ctlun.ip6_un1.ip6_un1_hlim = 32;
704 write_bytes((const char *)&HDR_IPv6, sizeof(HDR_IPv6));
706 /* initialize pseudo ipv6 header for checksum calculation */
707 pseudoh6.src_addr6 = HDR_IPv6.ip6_src;
708 pseudoh6.dst_addr6 = HDR_IPv6.ip6_dst;
710 pseudoh6.protocol = (guint8) hdr_ip_proto;
711 ihatemacros = g_ntohs(HDR_IPv6.ip6_ctlun.ip6_un1.ip6_un1_plen);
712 pseudoh.length = g_htons(length - ihatemacros + sizeof(HDR_UDP));
716 /* initialize pseudo header for checksum calculation */
717 pseudoh.src_addr = HDR_IP.src_addr;
718 pseudoh.dest_addr = HDR_IP.dest_addr;
720 pseudoh.protocol = (guint8) hdr_ip_proto;
721 pseudoh.length = g_htons(length - header_length + sizeof(HDR_UDP));
724 /* Write UDP header */
729 /* initialize the UDP header */
730 HDR_UDP.source_port = g_htons(hdr_src_port);
731 HDR_UDP.dest_port = g_htons(hdr_dest_port);
732 HDR_UDP.length = pseudoh.length;
733 HDR_UDP.checksum = 0;
734 /* Note: g_ntohs()/g_htons() macro arg may be eval'd twice so calc value before invoking macro */
735 x16 = hdr_ipv6 ? in_checksum(&pseudoh6, sizeof(pseudoh6)) : in_checksum(&pseudoh, sizeof(pseudoh));
737 x16 = in_checksum(&HDR_UDP, sizeof(HDR_UDP));
739 x16 = in_checksum(packet_buf + header_length, length - header_length);
741 x16 = (u & 0xffff) + (u>>16);
742 HDR_UDP.checksum = g_htons(x16);
743 if (HDR_UDP.checksum == 0) /* differentiate between 'none' and 0 */
744 HDR_UDP.checksum = g_htons(1);
745 write_bytes((const char *)&HDR_UDP, sizeof(HDR_UDP));
748 /* Write TCP header */
753 /* initialize pseudo header for checksum calculation */
754 pseudoh.src_addr = HDR_IP.src_addr;
755 pseudoh.dest_addr = HDR_IP.dest_addr;
757 pseudoh.protocol = (guint8) hdr_ip_proto;
758 pseudoh.length = g_htons(length - header_length + sizeof(HDR_TCP));
759 /* initialize the TCP header */
760 HDR_TCP.source_port = g_htons(hdr_src_port);
761 HDR_TCP.dest_port = g_htons(hdr_dest_port);
762 /* HDR_TCP.seq_num already correct */
763 HDR_TCP.window = g_htons(0x2000);
764 HDR_TCP.checksum = 0;
765 /* Note: g_ntohs()/g_htons() macro arg may be eval'd twice so calc value before invoking macro */
766 x16 = in_checksum(&pseudoh, sizeof(pseudoh));
768 x16 = in_checksum(&HDR_TCP, sizeof(HDR_TCP));
770 x16 = in_checksum(packet_buf + header_length, length - header_length);
772 x16 = (u & 0xffff) + (u>>16);
773 HDR_TCP.checksum = g_htons(x16);
774 if (HDR_TCP.checksum == 0) /* differentiate between 'none' and 0 */
775 HDR_TCP.checksum = g_htons(1);
776 write_bytes((const char *)&HDR_TCP, sizeof(HDR_TCP));
777 HDR_TCP.seq_num = g_ntohl(HDR_TCP.seq_num) + length - header_length;
778 HDR_TCP.seq_num = g_htonl(HDR_TCP.seq_num);
781 /* Compute DATA chunk header */
782 if (hdr_data_chunk) {
783 hdr_data_chunk_bits = 0;
784 if (packet_start == 0) {
785 hdr_data_chunk_bits |= 0x02;
788 hdr_data_chunk_bits |= 0x01;
790 HDR_DATA_CHUNK.type = hdr_data_chunk_type;
791 HDR_DATA_CHUNK.bits = hdr_data_chunk_bits;
792 HDR_DATA_CHUNK.length = g_htons(length - header_length + sizeof(HDR_DATA_CHUNK));
793 HDR_DATA_CHUNK.tsn = g_htonl(hdr_data_chunk_tsn);
794 HDR_DATA_CHUNK.sid = g_htons(hdr_data_chunk_sid);
795 HDR_DATA_CHUNK.ssn = g_htons(hdr_data_chunk_ssn);
796 HDR_DATA_CHUNK.ppid = g_htonl(hdr_data_chunk_ppid);
797 hdr_data_chunk_tsn++;
799 hdr_data_chunk_ssn++;
803 /* Write SCTP common header */
807 HDR_SCTP.src_port = g_htons(hdr_sctp_src);
808 HDR_SCTP.dest_port = g_htons(hdr_sctp_dest);
809 HDR_SCTP.tag = g_htonl(hdr_sctp_tag);
810 HDR_SCTP.checksum = g_htonl(0);
811 HDR_SCTP.checksum = crc32c((guint8 *)&HDR_SCTP, sizeof(HDR_SCTP), ~0);
812 if (hdr_data_chunk) {
813 HDR_SCTP.checksum = crc32c((guint8 *)&HDR_DATA_CHUNK, sizeof(HDR_DATA_CHUNK), HDR_SCTP.checksum);
814 HDR_SCTP.checksum = crc32c((guint8 *)packet_buf + header_length, length - header_length, HDR_SCTP.checksum);
815 HDR_SCTP.checksum = crc32c((guint8 *)&zero, padding_length, HDR_SCTP.checksum);
817 HDR_SCTP.checksum = crc32c((guint8 *)packet_buf + header_length, length - header_length, HDR_SCTP.checksum);
819 HDR_SCTP.checksum = finalize_crc32c(HDR_SCTP.checksum);
820 HDR_SCTP.checksum = g_htonl(HDR_SCTP.checksum);
821 write_bytes((const char *)&HDR_SCTP, sizeof(HDR_SCTP));
824 /* Write DATA chunk header */
825 if (hdr_data_chunk) {
826 write_bytes((const char *)&HDR_DATA_CHUNK, sizeof(HDR_DATA_CHUNK));
829 /* Reset curr_offset, since we now write the trailers */
830 curr_offset = length;
832 /* Write DATA chunk padding */
833 if (hdr_data_chunk && (padding_length > 0)) {
834 memset(tempbuf, 0, padding_length);
835 write_bytes((const char *)&tempbuf, padding_length);
836 length += padding_length;
839 /* Write Ethernet trailer */
840 if (hdr_ethernet && (length < 60)) {
841 memset(tempbuf, 0, 60 - length);
842 write_bytes((const char *)&tempbuf, 60 - length);
846 success = pcapng_write_enhanced_packet_block(output_file,
852 packet_buf, direction,
853 &bytes_written, &err);
855 success = libpcap_write_packet(output_file,
859 &bytes_written, &err);
862 fprintf(stderr, "File write error [%s] : %s\n",
863 output_filename, g_strerror(err));
866 if (ts_fmt == NULL) {
867 /* fake packet counter */
871 fprintf(stderr, "Wrote packet of %u bytes.\n", length);
873 num_packets_written++;
876 packet_start += curr_offset - header_length;
877 curr_offset = header_length;
881 /*----------------------------------------------------------------------
882 * Write file header and trailer
885 write_file_header (void)
892 const char *appname = "text2pcap (" GITVERSION " from " GITBRANCH ")";
894 const char *appname = "text2pcap";
898 g_snprintf(comment, sizeof(comment), "Generated from input file %s.", input_filename);
899 success = pcapng_write_session_header_block(output_file,
908 success = pcapng_write_interface_description_block(output_file,
922 success = libpcap_write_file_header(output_file, pcap_link_type, PCAP_SNAPLEN,
923 FALSE, &bytes_written, &err);
926 fprintf(stderr, "File write error [%s] : %s\n",
927 output_filename, g_strerror(err));
933 write_file_trailer (void)
939 success = pcapng_write_interface_statistics_block(output_file,
942 "Counters provided by text2pcap",
946 num_packets_written - num_packets_written,
953 fprintf(stderr, "File write error [%s] : %s\n",
954 output_filename, g_strerror(err));
960 /*----------------------------------------------------------------------
961 * Append a token to the packet preamble.
964 append_to_preamble (char *str)
968 if (packet_preamble_len != 0) {
969 if (packet_preamble_len == PACKET_PREAMBLE_MAX_LEN)
970 return; /* no room to add more preamble */
971 /* Add a blank separator between the previous token and this token. */
972 packet_preamble[packet_preamble_len++] = ' ';
974 toklen = strlen(str);
976 if (packet_preamble_len + toklen > PACKET_PREAMBLE_MAX_LEN)
977 return; /* no room to add the token to the preamble */
978 g_strlcpy(&packet_preamble[packet_preamble_len], str, PACKET_PREAMBLE_MAX_LEN);
979 packet_preamble_len += (int) toklen;
982 char xs[PACKET_PREAMBLE_MAX_LEN];
983 g_strlcpy(xs, packet_preamble, PACKET_PREAMBLE_MAX_LEN);
984 while ((c = strchr(xs, '\r')) != NULL) *c=' ';
985 fprintf (stderr, "[[append_to_preamble: \"%s\"]]", xs);
990 /*----------------------------------------------------------------------
991 * Parse the preamble to get the timecode.
995 parse_preamble (void)
1004 * Null-terminate the preamble.
1006 packet_preamble[packet_preamble_len] = '\0';
1008 fprintf(stderr, "[[parse_preamble: \"%s\"]]\n", packet_preamble);
1010 if (has_direction) {
1011 switch (packet_preamble[0]) {
1014 direction = 0x00000001;
1015 packet_preamble[0] = ' ';
1019 direction = 0x00000002;
1020 packet_preamble[0] = ' ';
1023 direction = 0x00000000;
1027 while (packet_preamble[i] == ' ' ||
1028 packet_preamble[i] == '\r' ||
1029 packet_preamble[i] == '\t') {
1032 packet_preamble_len -= i;
1033 /* Also move the trailing '\0'. */
1034 memmove(packet_preamble, packet_preamble + i, packet_preamble_len + 1);
1039 * If no "-t" flag was specified, don't attempt to parse the packet
1040 * preamble to extract a time stamp.
1042 if (ts_fmt == NULL) {
1043 /* Clear Preamble */
1044 packet_preamble_len = 0;
1049 * Initialize to today localtime, just in case not all fields
1050 * of the date and time are specified.
1053 timecode = timecode_default;
1056 /* Ensure preamble has more than two chars before attempting to parse.
1057 * This should cover line breaks etc that get counted.
1059 if (strlen(packet_preamble) > 2) {
1060 /* Get Time leaving subseconds */
1061 subsecs = strptime( packet_preamble, ts_fmt, &timecode );
1062 if (subsecs != NULL) {
1063 /* Get the long time from the tm structure */
1064 /* (will return -1 if failure) */
1065 ts_sec = mktime( &timecode );
1067 ts_sec = -1; /* we failed to parse it */
1069 /* This will ensure incorrectly parsed dates get set to zero */
1071 /* Sanitize - remove all '\r' */
1073 while ((c = strchr(packet_preamble, '\r')) != NULL) *c=' ';
1074 fprintf (stderr, "Failure processing time \"%s\" using time format \"%s\"\n (defaulting to Jan 1,1970 00:00:00 GMT)\n",
1075 packet_preamble, ts_fmt);
1077 fprintf(stderr, "timecode: %02d/%02d/%d %02d:%02d:%02d %d\n",
1078 timecode.tm_mday, timecode.tm_mon, timecode.tm_year,
1079 timecode.tm_hour, timecode.tm_min, timecode.tm_sec, timecode.tm_isdst);
1081 ts_sec = 0; /* Jan 1,1970: 00:00 GMT; tshark/wireshark will display date/time as adjusted by timezone */
1084 /* Parse subseconds */
1085 ts_usec = (guint32)strtol(subsecs, &p, 10);
1091 * Convert that number to a number
1092 * of microseconds; if it's N digits
1093 * long, it's in units of 10^(-N) seconds,
1094 * so, to convert it to units of
1095 * 10^-6 seconds, we multiply by
1098 subseclen = (int) (p - subsecs);
1099 if (subseclen > 6) {
1101 * *More* than 6 digits; 6-N is
1102 * negative, so we divide by
1105 for (i = subseclen - 6; i != 0; i--)
1107 } else if (subseclen < 6) {
1108 for (i = 6 - subseclen; i != 0; i--)
1116 while ((c = strchr(packet_preamble, '\r')) != NULL) *c=' ';
1117 fprintf(stderr, "[[parse_preamble: \"%s\"]]\n", packet_preamble);
1118 fprintf(stderr, "Format(%s), time(%u), subsecs(%u)\n", ts_fmt, (guint32)ts_sec, ts_usec);
1122 /* Clear Preamble */
1123 packet_preamble_len = 0;
1126 /*----------------------------------------------------------------------
1127 * Start a new packet
1130 start_new_packet (gboolean cont)
1133 fprintf(stderr, "Start new packet (cont = %s).\n", cont ? "TRUE" : "FALSE");
1135 /* Write out the current packet, if required */
1136 write_current_packet(cont);
1139 /* Ensure we parse the packet preamble as it may contain the time */
1143 /*----------------------------------------------------------------------
1144 * Process a directive
1147 process_directive (char *str)
1149 fprintf(stderr, "\n--- Directive [%s] currently unsupported ---\n", str + 10);
1152 /*----------------------------------------------------------------------
1153 * Parse a single token (called from the scanner)
1156 parse_token (token_t token, char *str)
1167 * This is implemented as a simple state machine of five states.
1168 * State transitions are caused by tokens being received from the
1169 * scanner. The code should be self-documenting.
1173 /* Sanitize - remove all '\r' */
1175 if (str!=NULL) { while ((c = strchr(str, '\r')) != NULL) *c=' '; }
1177 fprintf(stderr, "(%s, %s \"%s\") -> (",
1178 state_str[state], token_str[token], str ? str : "");
1183 /* ----- Waiting for new packet -------------------------------------------*/
1185 if (!str && token != T_EOL) goto fail_null_str;
1188 append_to_preamble(str);
1191 process_directive(str);
1194 num = parse_num(str, TRUE);
1196 /* New packet starts here */
1197 start_new_packet(FALSE);
1198 state = READ_OFFSET;
1199 pkt_lnstart = packet_buf + num;
1203 /* Some describing text may be parsed as offset, but the invalid
1204 offset will be checked in the state of START_OF_LINE, so
1205 we add this transition to gain flexibility */
1206 state = START_OF_LINE;
1213 /* ----- Processing packet, start of new line -----------------------------*/
1215 if (!str && token != T_EOL) goto fail_null_str;
1218 append_to_preamble(str);
1221 process_directive(str);
1224 num = parse_num(str, TRUE);
1226 /* New packet starts here */
1227 start_new_packet(FALSE);
1229 state = READ_OFFSET;
1230 } else if ((num - packet_start) != curr_offset - header_length) {
1232 * The offset we read isn't the one we expected.
1233 * This may only mean that we mistakenly interpreted
1234 * some text as byte values (e.g., if the text dump
1235 * of packet data included a number with spaces around
1236 * it). If the offset is less than what we expected,
1237 * assume that's the problem, and throw away the putative
1238 * extra byte values.
1240 if (num < curr_offset) {
1241 unwrite_bytes(curr_offset - num);
1242 state = READ_OFFSET;
1244 /* Bad offset; switch to INIT state */
1246 fprintf(stderr, "Inconsistent offset. Expecting %0X, got %0X. Ignoring rest of packet\n",
1248 write_current_packet(FALSE);
1252 state = READ_OFFSET;
1253 pkt_lnstart = packet_buf + num;
1256 state = START_OF_LINE;
1263 /* ----- Processing packet, read offset -----------------------------------*/
1267 /* Record the byte */
1269 if (!str) goto fail_null_str;
1278 state = START_OF_LINE;
1285 /* ----- Processing packet, read byte -------------------------------------*/
1289 /* Record the byte */
1298 if (token == T_EOL) {
1300 state = START_OF_LINE;
1302 if (identify_ascii) {
1303 /* Here a line of pkt bytes reading is finished
1304 compare the ascii and hex to avoid such situation:
1305 "61 62 20 ab ", when ab is ascii dump then it should
1306 not be treat as byte */
1308 /* s2 is the ASCII string, s1 is the HEX string, e.g, when
1309 s2 = "ab ", s1 = "616220"
1310 we should find out the largest tail of s1 matches the head
1311 of s2, it means the matched part in tail is the ASCII dump
1312 of the head byte. These matched should be rollback */
1313 line_size = curr_offset-(int)(pkt_lnstart-packet_buf);
1314 s2 = (char*)g_malloc((line_size+1)/4+1);
1315 /* gather the possible pattern */
1316 for (i = 0; i < (line_size+1)/4; i++) {
1317 tmp_str[0] = pkt_lnstart[i*3];
1318 tmp_str[1] = pkt_lnstart[i*3+1];
1320 /* it is a valid convertable string */
1321 if (!isxdigit(tmp_str[0]) || !isxdigit(tmp_str[0])) {
1324 s2[i] = (char)strtoul(tmp_str, (char **)NULL, 16);
1326 /* the 3rd entry is not a delimiter, so the possible byte pattern will not shown */
1327 if (!(pkt_lnstart[i*3+2] == ' ')) {
1333 /* If packet line start contains possible byte pattern, the line end
1334 should contain the matched pattern if the user open the -a flag.
1335 The packet will be possible invalid if the byte pattern cannot find
1336 a matched one in the line of packet buffer.*/
1338 if (strncmp(pkt_lnstart+line_size-rollback, s2, rollback) == 0) {
1339 unwrite_bytes(rollback);
1341 /* Not matched. This line contains invalid packet bytes, so
1342 discard the whole line */
1344 unwrite_bytes(line_size);
1355 /* ----- Processing packet, read text -------------------------------------*/
1359 state = START_OF_LINE;
1367 fprintf(stderr, "FATAL ERROR: Bad state (%d)", state);
1372 fprintf(stderr, ", %s)\n", state_str[state]);
1377 fprintf(stderr, "FATAL ERROR: got NULL str pointer in state (%d)", state);
1382 /*----------------------------------------------------------------------
1383 * Print usage string and exit
1386 usage (gboolean is_error)
1400 " (" GITVERSION " from " GITBRANCH ")"
1403 "Generate a capture file from an ASCII hexdump of packets.\n"
1404 "See http://www.wireshark.org for more information.\n"
1406 "Usage: text2pcap [options] <infile> <outfile>\n"
1408 "where <infile> specifies input filename (use - for standard input)\n"
1409 " <outfile> specifies output filename (use - for standard output)\n"
1412 " -o hex|oct|dec parse offsets as (h)ex, (o)ctal or (d)ecimal;\n"
1413 " default is hex.\n"
1414 " -t <timefmt> treat the text before the packet as a date/time code;\n"
1415 " the specified argument is a format string of the sort\n"
1416 " supported by strptime.\n"
1417 " Example: The time \"10:15:14.5476\" has the format code\n"
1418 " \"%%H:%%M:%%S.\"\n"
1419 " NOTE: The subsecond component delimiter, '.', must be\n"
1420 " given, but no pattern is required; the remaining\n"
1421 " number is assumed to be fractions of a second.\n"
1422 " NOTE: Date/time fields from the current date/time are\n"
1423 " used as the default for unspecified fields.\n"
1424 " -D the text before the packet starts with an I or an O,\n"
1425 " indicating that the packet is inbound or outbound.\n"
1426 " This is only stored if the output format is PCAP-NG.\n"
1427 " -a enable ASCII text dump identification.\n"
1428 " The start of the ASCII text dump can be identified\n"
1429 " and excluded from the packet data, even if it looks\n"
1430 " like a HEX dump.\n"
1431 " NOTE: Do not enable it if the input file does not\n"
1432 " contain the ASCII text dump.\n"
1435 " -l <typenum> link-layer type number; default is 1 (Ethernet). See\n"
1436 " http://www.tcpdump.org/linktypes.html for a list of\n"
1437 " numbers. Use this option if your dump is a complete\n"
1438 " hex dump of an encapsulated packet and you wish to\n"
1439 " specify the exact type of encapsulation.\n"
1440 " Example: -l 7 for ARCNet packets.\n"
1441 " -m <max-packet> max packet length in output; default is %d\n"
1443 "Prepend dummy header:\n"
1444 " -e <l3pid> prepend dummy Ethernet II header with specified L3PID\n"
1446 " Example: -e 0x806 to specify an ARP packet.\n"
1447 " -i <proto> prepend dummy IP header with specified IP protocol\n"
1449 " Automatically prepends Ethernet header as well.\n"
1451 " -4 <srcip>,<destip> prepend dummy IPv4 header with specified\n"
1452 " dest and source address.\n"
1453 " Example: -4 10.0.0.1,10.0.0.2\n"
1454 " -6 <srcip>,<destip> replace IPv6 header with specified\n"
1455 " dest and source address.\n"
1456 " Example: -6 fe80:0:0:0:202:b3ff:fe1e:8329, 2001:0db8:85a3:0000:0000:8a2e:0370:7334\n"
1457 " -u <srcp>,<destp> prepend dummy UDP header with specified\n"
1458 " source and destination ports (in DECIMAL).\n"
1459 " Automatically prepends Ethernet & IP headers as well.\n"
1460 " Example: -u 1000,69 to make the packets look like\n"
1461 " TFTP/UDP packets.\n"
1462 " -T <srcp>,<destp> prepend dummy TCP header with specified\n"
1463 " source and destination ports (in DECIMAL).\n"
1464 " Automatically prepends Ethernet & IP headers as well.\n"
1465 " Example: -T 50,60\n"
1466 " -s <srcp>,<dstp>,<tag> prepend dummy SCTP header with specified\n"
1467 " source/dest ports and verification tag (in DECIMAL).\n"
1468 " Automatically prepends Ethernet & IP headers as well.\n"
1469 " Example: -s 30,40,34\n"
1470 " -S <srcp>,<dstp>,<ppi> prepend dummy SCTP header with specified\n"
1471 " source/dest ports and verification tag 0.\n"
1472 " Automatically prepends a dummy SCTP DATA\n"
1473 " chunk header with payload protocol identifier ppi.\n"
1474 " Example: -S 30,40,34\n"
1477 " -h display this help and exit.\n"
1478 " -d show detailed debug of parser states.\n"
1479 " -q generate no output at all (automatically disables -d).\n"
1480 " -n use PCAP-NG instead of PCAP as output format.\n"
1482 VERSION, MAX_PACKET);
1484 exit(is_error ? 1 : 0);
1487 /*----------------------------------------------------------------------
1491 parse_options (int argc, char *argv[])
1497 arg_list_utf_16to8(argc, argv);
1498 create_app_running_mutex();
1501 /* Scan CLI parameters */
1502 while ((c = getopt(argc, argv, "aDdhqe:i:l:m:no:u:s:S:t:T:4:6:")) != -1) {
1504 case '?': usage(TRUE); break;
1505 case 'h': usage(FALSE); break;
1506 case 'd': if (!quiet) debug++; break;
1507 case 'D': has_direction = TRUE; break;
1508 case 'q': quiet = TRUE; debug = FALSE; break;
1509 case 'l': pcap_link_type = (guint32)strtol(optarg, NULL, 0); break;
1510 case 'm': max_offset = (guint32)strtol(optarg, NULL, 0); break;
1511 case 'n': use_pcapng = TRUE; break;
1513 if (optarg[0] != 'h' && optarg[0] != 'o' && optarg[0] != 'd') {
1514 fprintf(stderr, "Bad argument for '-o': %s\n", optarg);
1517 switch (optarg[0]) {
1518 case 'o': offset_base = 8; break;
1519 case 'h': offset_base = 16; break;
1520 case 'd': offset_base = 10; break;
1524 hdr_ethernet = TRUE;
1525 if (sscanf(optarg, "%x", &hdr_ethernet_proto) < 1) {
1526 fprintf(stderr, "Bad argument for '-e': %s\n", optarg);
1533 hdr_ip_proto = strtol(optarg, &p, 10);
1534 if (p == optarg || *p != '\0' || hdr_ip_proto < 0 ||
1535 hdr_ip_proto > 255) {
1536 fprintf(stderr, "Bad argument for '-i': %s\n", optarg);
1539 hdr_ethernet = TRUE;
1540 hdr_ethernet_proto = 0x800;
1545 hdr_data_chunk = FALSE;
1548 hdr_sctp_src = (guint32)strtol(optarg, &p, 10);
1549 if (p == optarg || (*p != ',' && *p != '\0')) {
1550 fprintf(stderr, "Bad src port for '-%c'\n", c);
1554 fprintf(stderr, "No dest port specified for '-%c'\n", c);
1559 hdr_sctp_dest = (guint32)strtol(optarg, &p, 10);
1560 if (p == optarg || (*p != ',' && *p != '\0')) {
1561 fprintf(stderr, "Bad dest port for '-s'\n");
1565 fprintf(stderr, "No tag specified for '-%c'\n", c);
1570 hdr_sctp_tag = (guint32)strtol(optarg, &p, 10);
1571 if (p == optarg || *p != '\0') {
1572 fprintf(stderr, "Bad tag for '-%c'\n", c);
1578 hdr_ethernet = TRUE;
1579 hdr_ethernet_proto = 0x800;
1583 hdr_data_chunk = TRUE;
1586 hdr_sctp_src = (guint32)strtol(optarg, &p, 10);
1587 if (p == optarg || (*p != ',' && *p != '\0')) {
1588 fprintf(stderr, "Bad src port for '-%c'\n", c);
1592 fprintf(stderr, "No dest port specified for '-%c'\n", c);
1597 hdr_sctp_dest = (guint32)strtol(optarg, &p, 10);
1598 if (p == optarg || (*p != ',' && *p != '\0')) {
1599 fprintf(stderr, "Bad dest port for '-s'\n");
1603 fprintf(stderr, "No ppi specified for '-%c'\n", c);
1608 hdr_data_chunk_ppid = (guint32)strtoul(optarg, &p, 10);
1609 if (p == optarg || *p != '\0') {
1610 fprintf(stderr, "Bad ppi for '-%c'\n", c);
1616 hdr_ethernet = TRUE;
1617 hdr_ethernet_proto = 0x800;
1628 hdr_data_chunk = FALSE;
1629 hdr_src_port = (guint32)strtol(optarg, &p, 10);
1630 if (p == optarg || (*p != ',' && *p != '\0')) {
1631 fprintf(stderr, "Bad src port for '-u'\n");
1635 fprintf(stderr, "No dest port specified for '-u'\n");
1640 hdr_dest_port = (guint32)strtol(optarg, &p, 10);
1641 if (p == optarg || *p != '\0') {
1642 fprintf(stderr, "Bad dest port for '-u'\n");
1647 hdr_ethernet = TRUE;
1648 hdr_ethernet_proto = 0x800;
1655 hdr_data_chunk = FALSE;
1656 hdr_src_port = (guint32)strtol(optarg, &p, 10);
1657 if (p == optarg || (*p != ',' && *p != '\0')) {
1658 fprintf(stderr, "Bad src port for '-T'\n");
1662 fprintf(stderr, "No dest port specified for '-u'\n");
1667 hdr_dest_port = (guint32)strtol(optarg, &p, 10);
1668 if (p == optarg || *p != '\0') {
1669 fprintf(stderr, "Bad dest port for '-T'\n");
1674 hdr_ethernet = TRUE;
1675 hdr_ethernet_proto = 0x800;
1679 identify_ascii = TRUE;
1684 p = strchr(optarg, ',');
1687 fprintf(stderr, "Bad source param addr for '-%c'\n", c);
1695 hdr_ethernet_proto = 0x86DD;
1700 hdr_ethernet_proto = 0x800;
1702 hdr_ethernet = TRUE;
1704 if (hdr_ipv6 == TRUE) {
1705 if (inet_pton( AF_INET6, optarg, hdr_ipv6_src_addr) <= 0) {
1706 fprintf(stderr, "Bad src addr -%c '%s'\n", c, p);
1710 if (inet_pton( AF_INET, optarg, &hdr_ip_src_addr) <= 0) {
1711 fprintf(stderr, "Bad src addr -%c '%s'\n", c, p);
1718 fprintf(stderr, "No dest addr specified for '-%c'\n", c);
1722 if (hdr_ipv6 == TRUE) {
1723 if (inet_pton( AF_INET6, p, hdr_ipv6_dest_addr) <= 0) {
1724 fprintf(stderr, "Bad dest addr for -%c '%s'\n", c, p);
1728 if (inet_pton( AF_INET, p, &hdr_ip_dest_addr) <= 0) {
1729 fprintf(stderr, "Bad dest addr for -%c '%s'\n", c, p);
1741 if (optind >= argc || argc-optind < 2) {
1742 fprintf(stderr, "Must specify input and output filename\n");
1746 if (strcmp(argv[optind], "-")) {
1747 input_filename = g_strdup(argv[optind]);
1748 input_file = ws_fopen(input_filename, "rb");
1750 fprintf(stderr, "Cannot open file [%s] for reading: %s\n",
1751 input_filename, g_strerror(errno));
1755 input_filename = "Standard input";
1759 if (strcmp(argv[optind+1], "-")) {
1760 output_filename = g_strdup(argv[optind+1]);
1761 output_file = ws_fopen(output_filename, "wb");
1763 fprintf(stderr, "Cannot open file [%s] for writing: %s\n",
1764 output_filename, g_strerror(errno));
1768 output_filename = "Standard output";
1769 output_file = stdout;
1772 /* Some validation */
1773 if (pcap_link_type != 1 && hdr_ethernet) {
1774 fprintf(stderr, "Dummy headers (-e, -i, -u, -s, -S -T) cannot be specified with link type override (-l)\n");
1778 /* Set up our variables */
1781 input_filename = "Standard input";
1784 output_file = stdout;
1785 output_filename = "Standard output";
1788 ts_sec = time(0); /* initialize to current time */
1789 timecode_default = *localtime(&ts_sec);
1790 timecode_default.tm_isdst = -1; /* Unknown for now, depends on time given to the strptime() function */
1792 /* Display summary of our state */
1794 fprintf(stderr, "Input from: %s\n", input_filename);
1795 fprintf(stderr, "Output to: %s\n", output_filename);
1796 fprintf(stderr, "Output format: %s\n", use_pcapng ? "PCAP-NG" : "PCAP");
1798 if (hdr_ethernet) fprintf(stderr, "Generate dummy Ethernet header: Protocol: 0x%0X\n",
1799 hdr_ethernet_proto);
1800 if (hdr_ip) fprintf(stderr, "Generate dummy IP header: Protocol: %ld\n",
1802 if (hdr_udp) fprintf(stderr, "Generate dummy UDP header: Source port: %u. Dest port: %u\n",
1803 hdr_src_port, hdr_dest_port);
1804 if (hdr_tcp) fprintf(stderr, "Generate dummy TCP header: Source port: %u. Dest port: %u\n",
1805 hdr_src_port, hdr_dest_port);
1806 if (hdr_sctp) fprintf(stderr, "Generate dummy SCTP header: Source port: %u. Dest port: %u. Tag: %u\n",
1807 hdr_sctp_src, hdr_sctp_dest, hdr_sctp_tag);
1808 if (hdr_data_chunk) fprintf(stderr, "Generate dummy DATA chunk header: TSN: %u. SID: %d. SSN: %d. PPID: %u\n",
1809 hdr_data_chunk_tsn, hdr_data_chunk_sid, hdr_data_chunk_ssn, hdr_data_chunk_ppid);
1814 main(int argc, char *argv[])
1816 parse_options(argc, argv);
1818 assert(input_file != NULL);
1819 assert(output_file != NULL);
1821 write_file_header();
1825 header_length += (int)sizeof(HDR_ETHERNET);
1828 ip_offset = header_length;
1829 header_length += (int)sizeof(HDR_IP);
1830 } else if (hdr_ipv6) {
1831 ip_offset = header_length;
1832 header_length += (int)sizeof(HDR_IPv6);
1835 header_length += (int)sizeof(HDR_SCTP);
1837 if (hdr_data_chunk) {
1838 header_length += (int)sizeof(HDR_DATA_CHUNK);
1841 header_length += (int)sizeof(HDR_TCP);
1844 header_length += (int)sizeof(HDR_UDP);
1846 curr_offset = header_length;
1851 write_current_packet(FALSE);
1852 write_file_trailer();
1854 fclose(output_file);
1856 fprintf(stderr, "\n-------------------------\n");
1858 fprintf(stderr, "Read %u potential packet%s, wrote %u packet%s (%" G_GINT64_MODIFIER "u byte%s).\n",
1859 num_packets_read, (num_packets_read == 1) ? "" : "s",
1860 num_packets_written, (num_packets_written == 1) ? "" : "s",
1861 bytes_written, (bytes_written == 1) ? "" : "s");
1867 * Editor modelines - http://www.wireshark.org/tools/modelines.html
1872 * indent-tabs-mode: nil
1875 * vi: set shiftwidth=4 tabstop=8 expandtab:
1876 * :indentSize=4:tabSize=8:noTabs=true: