2 * State machine for text import
3 * November 2010, Jaap Keuter <jaap.keuter@xs4all.nl>
7 * Wireshark - Network traffic analyzer
8 * By Gerald Combs <gerald@wireshark.org>
9 * Copyright 1998 Gerald Combs
11 * Based on text2pcap.c by Ashok Narayanan <ashokn@cisco.com>
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
29 /*******************************************************************************
31 * This utility reads in an ASCII hexdump of this common format:
33 * 00000000 00 E0 1E A7 05 6F 00 10 5A A0 B9 12 08 00 46 00 .....o..Z.....F.
34 * 00000010 03 68 00 00 00 00 0A 2E EE 33 0F 19 08 7F 0F 19 .h.......3......
35 * 00000020 03 80 94 04 00 00 10 01 16 A2 0A 00 03 50 00 0C .............P..
36 * 00000030 01 01 0F 19 03 80 11 01 1E 61 00 0C 03 01 0F 19 .........a......
38 * Each bytestring line consists of an offset, one or more bytes, and
39 * text at the end. An offset is defined as a hex string of more than
40 * two characters. A byte is defined as a hex string of exactly two
41 * characters. The text at the end is ignored, as is any text before
42 * the offset. Bytes read from a bytestring line are added to the
43 * current packet only if all the following conditions are satisfied:
45 * - No text appears between the offset and the bytes (any bytes appearing after
46 * such text would be ignored)
48 * - The offset must be arithmetically correct, i.e. if the offset is 00000020, then
49 * exactly 32 bytes must have been read into this packet before this. If the offset
50 * is wrong, the packet is immediately terminated
52 * A packet start is signalled by a zero offset.
54 * Lines starting with #TEXT2PCAP are directives. These allow the user
55 * to embed instructions into the capture file which allows text2pcap
56 * to take some actions (e.g. specifying the encapsulation
57 * etc.). Currently no directives are implemented.
59 * Lines beginning with # which are not directives are ignored as
60 * comments. Currently all non-hexdump text is ignored by text2pcap;
61 * in the future, text processing may be added, but lines prefixed
62 * with '#' will still be ignored.
64 * The output is a libpcap packet containing Ethernet frames by
65 * default. This program takes options which allow the user to add
66 * dummy Ethernet, IP and UDP or TCP headers to the packets in order
67 * to allow dumps of L3 or higher protocols to be decoded.
69 * Considerable flexibility is built into this code to read hexdumps
70 * of slightly different formats. For example, any text prefixing the
71 * hexdump line is dropped (including mail forwarding '>'). The offset
72 * can be any hex number of four digits or greater.
74 * This converter cannot read a single packet greater than 64K. Packet
75 * snaplength is automatically set to 64K.
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
91 # define _XOPEN_SOURCE 600
95 * Defining _XOPEN_SOURCE is needed on some platforms, e.g. platforms
96 * using glibc, to expand the set of things system header files define.
98 * Unfortunately, on other platforms, such as some versions of Solaris
99 * (including Solaris 10), it *reduces* that set as well, causing
100 * strptime() not to be declared, presumably because the version of the
101 * X/Open spec that _XOPEN_SOURCE implies doesn't include strptime() and
102 * blah blah blah namespace pollution blah blah blah.
104 * So we define __EXTENSIONS__ so that "strptime()" is declared.
106 #ifndef __EXTENSIONS__
107 # define __EXTENSIONS__
114 #include <wsutil/file_util.h>
126 #include <epan/tvbuff.h>
127 #include <wsutil/crc32.h>
128 #include <epan/in_cksum.h>
130 #ifdef NEED_STRPTIME_H
131 # include "wsutil/strptime.h"
134 #include "text_import.h"
135 #include "text_import_scanner.h"
137 /*--- Options --------------------------------------------------------------------*/
140 static int debug = 0;
142 /* Dummy Ethernet header */
143 static int hdr_ethernet = FALSE;
144 static unsigned long hdr_ethernet_proto = 0;
146 /* Dummy IP header */
147 static int hdr_ip = FALSE;
148 static long hdr_ip_proto = 0;
150 /* Dummy UDP header */
151 static int hdr_udp = FALSE;
152 static unsigned long hdr_dest_port = 0;
153 static unsigned long hdr_src_port = 0;
155 /* Dummy TCP header */
156 static int hdr_tcp = FALSE;
158 /* Dummy SCTP header */
159 static int hdr_sctp = FALSE;
160 static unsigned long hdr_sctp_src = 0;
161 static unsigned long hdr_sctp_dest = 0;
162 static unsigned long hdr_sctp_tag = 0;
164 /* Dummy DATA chunk header */
165 static int hdr_data_chunk = FALSE;
166 static unsigned char hdr_data_chunk_type = 0;
167 static unsigned char hdr_data_chunk_bits = 3;
168 static unsigned long hdr_data_chunk_tsn = 0;
169 static unsigned short hdr_data_chunk_sid = 0;
170 static unsigned short hdr_data_chunk_ssn = 0;
171 static unsigned long hdr_data_chunk_ppid = 0;
174 /*--- Local data -----------------------------------------------------------------*/
176 /* This is where we store the packet currently being built */
177 static unsigned char *packet_buf;
178 static unsigned long curr_offset = 0;
179 static unsigned long max_offset = IMPORT_MAX_PACKET;
180 static unsigned long packet_start = 0;
181 static void start_new_packet (void);
183 /* This buffer contains strings present before the packet offset 0 */
184 #define PACKET_PREAMBLE_MAX_LEN 2048
185 static unsigned char packet_preamble[PACKET_PREAMBLE_MAX_LEN+1];
186 static int packet_preamble_len = 0;
188 /* Time code of packet, derived from packet_preamble */
189 static time_t ts_sec = 0;
190 static guint32 ts_usec = 0;
191 static char *ts_fmt = NULL;
192 static struct tm timecode_default;
194 static wtap_dumper* wdh;
196 /* HDR_ETH Offset base to parse */
197 static unsigned long offset_base = 16;
199 /* ----- State machine -----------------------------------------------------------*/
201 /* Current state of parser */
203 INIT, /* Waiting for start of new packet */
204 START_OF_LINE, /* Starting from beginning of line */
205 READ_OFFSET, /* Just read the offset */
206 READ_BYTE, /* Just read a byte */
207 READ_TEXT /* Just read text - ignore until EOL */
209 static parser_state_t state = INIT;
211 static const char *state_str[] = {"Init",
218 static const char *token_str[] = {"",
226 /* ----- Skeleton Packet Headers --------------------------------------------------*/
234 static hdr_ethernet_t HDR_ETHERNET = {
235 {0x20, 0x52, 0x45, 0x43, 0x56, 0x00},
236 {0x20, 0x53, 0x45, 0x4E, 0x44, 0x00},
242 guint16 packet_length;
243 guint16 identification;
248 guint16 hdr_checksum;
253 static hdr_ip_t HDR_IP =
254 {0x45, 0, 0, 0x3412, 0, 0, 0xff, 0, 0, 0x01010101, 0x02020202};
256 static struct { /* pseudo header for checksum calculation */
271 static hdr_udp_t HDR_UDP = {0, 0, 0, 0};
285 static hdr_tcp_t HDR_TCP = {0, 0, 0, 0, 0x50, 0, 0, 0, 0};
294 static hdr_sctp_t HDR_SCTP = {0, 0, 0, 0};
306 static hdr_data_chunk_t HDR_DATA_CHUNK = {0, 0, 0, 0, 0, 0, 0};
308 /* Link-layer type; see net/bpf.h for details */
309 static unsigned long pcap_link_type = 1; /* Default is DLT-EN10MB */
311 /*----------------------------------------------------------------------
312 * Parse a single hex number
313 * Will abort the program if it can't parse the number
314 * Pass in TRUE if this is an offset, FALSE if not
317 parse_num (const char *str, int offset)
322 num = strtoul(str, &c, offset ? offset_base : 16);
324 fprintf(stderr, "FATAL ERROR: Bad hex number? [%s]\n", str);
329 /*----------------------------------------------------------------------
330 * Write this byte into current packet
333 write_byte (const char *str)
337 num = parse_num(str, FALSE);
338 packet_buf[curr_offset] = (unsigned char) num;
340 if (curr_offset >= max_offset) /* packet full */
344 /*----------------------------------------------------------------------
345 * Remove bytes from the current packet
348 unwrite_bytes (unsigned long nbytes)
350 curr_offset -= nbytes;
353 /*----------------------------------------------------------------------
354 * Determin SCTP chunk padding length
357 number_of_padding_bytes (unsigned long length)
359 unsigned long remainder;
361 remainder = length % 4;
366 return 4 - remainder;
369 /*----------------------------------------------------------------------
370 * Write current packet out
373 write_current_packet (void)
375 int prefix_length = 0;
376 int proto_length = 0;
378 int eth_trailer_length = 0;
379 int prefix_index = 0;
380 int i, padding_length;
382 if (curr_offset > 0) {
383 /* Write the packet */
385 /* Compute packet length */
387 if (hdr_data_chunk) { prefix_length += sizeof(HDR_DATA_CHUNK); }
388 if (hdr_sctp) { prefix_length += sizeof(HDR_SCTP); }
389 if (hdr_udp) { prefix_length += sizeof(HDR_UDP); proto_length = prefix_length + curr_offset; }
390 if (hdr_tcp) { prefix_length += sizeof(HDR_TCP); proto_length = prefix_length + curr_offset; }
392 prefix_length += sizeof(HDR_IP);
393 ip_length = prefix_length + curr_offset + ((hdr_data_chunk) ? number_of_padding_bytes(curr_offset) : 0);
395 if (hdr_ethernet) { prefix_length += sizeof(HDR_ETHERNET); }
397 /* Make room for dummy header */
398 memmove(&packet_buf[prefix_length], packet_buf, curr_offset);
402 if (prefix_length + curr_offset < 60) {
403 eth_trailer_length = 60 - (prefix_length + curr_offset);
407 /* Write Ethernet header */
409 HDR_ETHERNET.l3pid = g_htons(hdr_ethernet_proto);
410 memcpy(&packet_buf[prefix_index], &HDR_ETHERNET, sizeof(HDR_ETHERNET));
411 prefix_index += sizeof(HDR_ETHERNET);
414 /* Write IP header */
416 vec_t cksum_vector[1];
418 HDR_IP.packet_length = g_htons(ip_length);
419 HDR_IP.protocol = (guint8) hdr_ip_proto;
420 HDR_IP.hdr_checksum = 0;
421 cksum_vector[0].ptr = (guint8 *)&HDR_IP; cksum_vector[0].len = sizeof(HDR_IP);
422 HDR_IP.hdr_checksum = in_cksum(cksum_vector, 1);
424 memcpy(&packet_buf[prefix_index], &HDR_IP, sizeof(HDR_IP));
425 prefix_index += sizeof(HDR_IP);
428 /* initialize pseudo header for checksum calculation */
429 pseudoh.src_addr = HDR_IP.src_addr;
430 pseudoh.dest_addr = HDR_IP.dest_addr;
432 pseudoh.protocol = (guint8) hdr_ip_proto;
433 pseudoh.length = g_htons(proto_length);
435 /* Write UDP header */
437 vec_t cksum_vector[3];
439 HDR_UDP.source_port = g_htons(hdr_src_port);
440 HDR_UDP.dest_port = g_htons(hdr_dest_port);
441 HDR_UDP.length = g_htons(proto_length);
443 HDR_UDP.checksum = 0;
444 cksum_vector[0].ptr = (guint8 *)&pseudoh; cksum_vector[0].len = sizeof(pseudoh);
445 cksum_vector[1].ptr = (guint8 *)&HDR_UDP; cksum_vector[1].len = sizeof(HDR_UDP);
446 cksum_vector[2].ptr = &packet_buf[prefix_length]; cksum_vector[2].len = curr_offset;
447 HDR_UDP.checksum = in_cksum(cksum_vector, 3);
449 memcpy(&packet_buf[prefix_index], &HDR_UDP, sizeof(HDR_UDP));
450 prefix_index += sizeof(HDR_UDP);
453 /* Write TCP header */
455 vec_t cksum_vector[3];
457 HDR_TCP.source_port = g_htons(hdr_src_port);
458 HDR_TCP.dest_port = g_htons(hdr_dest_port);
459 /* HDR_TCP.seq_num already correct */
460 HDR_TCP.window = g_htons(0x2000);
462 HDR_TCP.checksum = 0;
463 cksum_vector[0].ptr = (guint8 *)&pseudoh; cksum_vector[0].len = sizeof(pseudoh);
464 cksum_vector[1].ptr = (guint8 *)&HDR_TCP; cksum_vector[1].len = sizeof(HDR_TCP);
465 cksum_vector[2].ptr = &packet_buf[prefix_length]; cksum_vector[2].len = curr_offset;
466 HDR_TCP.checksum = in_cksum(cksum_vector, 3);
468 memcpy(&packet_buf[prefix_index], &HDR_TCP, sizeof(HDR_TCP));
469 prefix_index += sizeof(HDR_TCP);
472 /* Compute DATA chunk header and append padding */
473 if (hdr_data_chunk) {
474 HDR_DATA_CHUNK.type = hdr_data_chunk_type;
475 HDR_DATA_CHUNK.bits = hdr_data_chunk_bits;
476 HDR_DATA_CHUNK.length = g_htons(curr_offset + sizeof(HDR_DATA_CHUNK));
477 HDR_DATA_CHUNK.tsn = g_htonl(hdr_data_chunk_tsn);
478 HDR_DATA_CHUNK.sid = g_htons(hdr_data_chunk_sid);
479 HDR_DATA_CHUNK.ssn = g_htons(hdr_data_chunk_ssn);
480 HDR_DATA_CHUNK.ppid = g_htonl(hdr_data_chunk_ppid);
482 padding_length = number_of_padding_bytes(curr_offset);
483 for (i=0; i<padding_length; i++)
484 packet_buf[prefix_length+curr_offset+i] = 0;
485 curr_offset += padding_length;
488 /* Write SCTP header */
490 HDR_SCTP.src_port = g_htons(hdr_sctp_src);
491 HDR_SCTP.dest_port = g_htons(hdr_sctp_dest);
492 HDR_SCTP.tag = g_htonl(hdr_sctp_tag);
493 HDR_SCTP.checksum = g_htonl(0);
495 HDR_SCTP.checksum = crc32c_calculate(&HDR_SCTP, sizeof(HDR_SCTP), CRC32C_PRELOAD);
497 HDR_SCTP.checksum = crc32c_calculate(&HDR_DATA_CHUNK, sizeof(HDR_DATA_CHUNK), HDR_SCTP.checksum);
498 HDR_SCTP.checksum = g_htonl(~crc32c_calculate(&packet_buf[prefix_length], curr_offset, HDR_SCTP.checksum));
500 memcpy(&packet_buf[prefix_index], &HDR_SCTP, sizeof(HDR_SCTP));
501 prefix_index += sizeof(HDR_SCTP);
504 /* Write DATA chunk header */
505 if (hdr_data_chunk) {
506 memcpy(&packet_buf[prefix_index], &HDR_DATA_CHUNK, sizeof(HDR_DATA_CHUNK));
507 prefix_index += sizeof(HDR_DATA_CHUNK);
510 /* Write Ethernet trailer */
511 if (hdr_ethernet && eth_trailer_length > 0) {
512 memset(&packet_buf[prefix_length+curr_offset], 0, eth_trailer_length);
515 HDR_TCP.seq_num = g_htonl(g_ntohl(HDR_TCP.seq_num) + curr_offset);
518 /* Write the packet */
519 struct wtap_pkthdr pkthdr;
522 pkthdr.ts.secs = (guint32)ts_sec;
523 pkthdr.ts.nsecs = ts_usec * 1000;
524 if (ts_fmt == NULL) { ts_usec++; } /* fake packet counter */
525 pkthdr.caplen = pkthdr.len = prefix_length + curr_offset + eth_trailer_length;;
526 pkthdr.pkt_encap = pcap_link_type;
528 wtap_dump(wdh, &pkthdr, NULL, packet_buf, &err);
532 packet_start += curr_offset;
537 /*----------------------------------------------------------------------
538 * Append a token to the packet preamble.
541 append_to_preamble(char *str)
545 if (packet_preamble_len != 0) {
546 if (packet_preamble_len == PACKET_PREAMBLE_MAX_LEN)
547 return; /* no room to add more preamble */
548 /* Add a blank separator between the previous token and this token. */
549 packet_preamble[packet_preamble_len++] = ' ';
551 toklen = strlen(str);
553 if (packet_preamble_len + toklen > PACKET_PREAMBLE_MAX_LEN)
554 return; /* no room to add the token to the preamble */
555 g_strlcpy(&packet_preamble[packet_preamble_len], str, PACKET_PREAMBLE_MAX_LEN);
556 packet_preamble_len += (int) toklen;
559 char xs[PACKET_PREAMBLE_MAX_LEN];
560 g_strlcpy(xs, packet_preamble, PACKET_PREAMBLE_MAX_LEN);
561 while ((c = strchr(xs, '\r')) != NULL) *c=' ';
562 fprintf (stderr, "[[append_to_preamble: \"%s\"]]", xs);
567 /*----------------------------------------------------------------------
568 * Parse the preamble to get the timecode.
572 parse_preamble (void)
581 * If no "-t" flag was specified, don't attempt to parse a packet
582 * preamble to extract a time stamp.
588 * Initialize to today localtime, just in case not all fields
589 * of the date and time are specified.
592 timecode = timecode_default;
596 * Null-terminate the preamble.
598 packet_preamble[packet_preamble_len] = '\0';
600 /* Ensure preamble has more than two chars before atempting to parse.
601 * This should cover line breaks etc that get counted.
603 if ( strlen(packet_preamble) > 2 ) {
604 /* Get Time leaving subseconds */
605 subsecs = strptime( packet_preamble, ts_fmt, &timecode );
606 if (subsecs != NULL) {
607 /* Get the long time from the tm structure */
608 /* (will return -1 if failure) */
609 ts_sec = mktime( &timecode );
611 ts_sec = -1; /* we failed to parse it */
613 /* This will ensure incorrectly parsed dates get set to zero */
616 /* Sanitize - remove all '\r' */
618 while ((c = strchr(packet_preamble, '\r')) != NULL) *c=' ';
619 fprintf (stderr, "Failure processing time \"%s\" using time format \"%s\"\n (defaulting to Jan 1,1970 00:00:00 GMT)\n",
620 packet_preamble, ts_fmt);
622 fprintf(stderr, "timecode: %02d/%02d/%d %02d:%02d:%02d %d\n",
623 timecode.tm_mday, timecode.tm_mon, timecode.tm_year,
624 timecode.tm_hour, timecode.tm_min, timecode.tm_sec, timecode.tm_isdst);
626 ts_sec = 0; /* Jan 1,1970: 00:00 GMT; tshark/wireshark will display date/time as adjusted by timezone */
631 /* Parse subseconds */
632 ts_usec = strtol(subsecs, &p, 10);
638 * Convert that number to a number
639 * of microseconds; if it's N digits
640 * long, it's in units of 10^(-N) seconds,
641 * so, to convert it to units of
642 * 10^-6 seconds, we multiply by
645 subseclen = (int) (p - subsecs);
648 * *More* than 6 digits; 6-N is
649 * negative, so we divide by
652 for (i = subseclen - 6; i != 0; i--)
654 } else if (subseclen < 6) {
655 for (i = 6 - subseclen; i != 0; i--)
663 while ((c = strchr(packet_preamble, '\r')) != NULL) *c=' ';
664 fprintf(stderr, "[[parse_preamble: \"%s\"]]\n", packet_preamble);
665 fprintf(stderr, "Format(%s), time(%u), subsecs(%u)\n", ts_fmt, (guint32)ts_sec, ts_usec);
670 packet_preamble_len = 0;
673 /*----------------------------------------------------------------------
677 start_new_packet (void)
680 fprintf(stderr, "Start new packet\n");
682 /* Write out the current packet, if required */
683 write_current_packet();
685 /* Ensure we parse the packet preamble as it may contain the time */
689 /*----------------------------------------------------------------------
690 * Process a directive
693 process_directive (char *str)
695 fprintf(stderr, "\n--- Directive [%s] currently unsupported ---\n", str+10);
699 /*----------------------------------------------------------------------
700 * Parse a single token (called from the scanner)
703 parse_token (token_t token, char *str)
708 * This is implemented as a simple state machine of five states.
709 * State transitions are caused by tokens being received from the
710 * scanner. The code should be self_documenting.
714 /* Sanitize - remove all '\r' */
716 if (str!=NULL) { while ((c = strchr(str, '\r')) != NULL) *c=' '; }
718 fprintf(stderr, "(%s, %s \"%s\") -> (",
719 state_str[state], token_str[token], str ? str : "");
724 /* ----- Waiting for new packet -------------------------------------------*/
728 append_to_preamble(str);
731 process_directive(str);
734 num = parse_num(str, TRUE);
736 /* New packet starts here */
746 /* ----- Processing packet, start of new line -----------------------------*/
750 append_to_preamble(str);
753 process_directive(str);
756 num = parse_num(str, TRUE);
758 /* New packet starts here */
762 } else if ((num - packet_start) != curr_offset) {
764 * The offset we read isn't the one we expected.
765 * This may only mean that we mistakenly interpreted
766 * some text as byte values (e.g., if the text dump
767 * of packet data included a number with spaces around
768 * it). If the offset is less than what we expected,
769 * assume that's the problem, and throw away the putative
772 if (num < curr_offset) {
773 unwrite_bytes(curr_offset - num);
776 /* Bad offset; switch to INIT state */
778 fprintf(stderr, "Inconsistent offset. Expecting %0lX, got %0lX. Ignoring rest of packet\n",
780 write_current_packet();
791 /* ----- Processing packet, read offset -----------------------------------*/
795 /* Record the byte */
805 state = START_OF_LINE;
812 /* ----- Processing packet, read byte -------------------------------------*/
816 /* Record the byte */
825 state = START_OF_LINE;
832 /* ----- Processing packet, read text -------------------------------------*/
836 state = START_OF_LINE;
844 fprintf(stderr, "FATAL ERROR: Bad state (%d)", state);
849 fprintf(stderr, ", %s)\n", state_str[state]);
853 /*----------------------------------------------------------------------
854 * take in the import config information
857 text_import_setup(text_import_info_t *info)
859 packet_buf = (unsigned char *)g_malloc(sizeof(HDR_ETHERNET) + sizeof(HDR_IP) +
860 sizeof(HDR_SCTP) + sizeof(HDR_DATA_CHUNK) +
865 fprintf(stderr, "FATAL ERROR: no memory for packet buffer");
869 /* Lets start from the beginning */
873 packet_preamble_len = 0;
874 ts_sec = time(0); /* initialize to current time */
875 timecode_default = *localtime(&ts_sec);
876 timecode_default.tm_isdst = -1; /* Unknown for now, depends on time given to the strptime() function */
880 hdr_ethernet = FALSE;
885 hdr_data_chunk = FALSE;
887 offset_base = (info->offset_type == OFFSET_HEX) ? 16 :
888 (info->offset_type == OFFSET_OCT) ? 8 :
889 (info->offset_type == OFFSET_DEC) ? 10 :
892 if (info->date_timestamp)
894 ts_fmt = info->date_timestamp_format;
897 pcap_link_type = info->encapsulation;
901 switch (info->dummy_header_type)
905 hdr_ethernet_proto = info->pid;
910 hdr_ip_proto = info->protocol;
912 hdr_ethernet_proto = 0x800;
918 hdr_src_port = info->src_port;
919 hdr_dest_port = info->dst_port;
923 hdr_ethernet_proto = 0x800;
929 hdr_src_port = info->src_port;
930 hdr_dest_port = info->dst_port;
934 hdr_ethernet_proto = 0x800;
939 hdr_sctp_src = info->src_port;
940 hdr_sctp_dest = info->dst_port;
941 hdr_sctp_tag = info->tag;
945 hdr_ethernet_proto = 0x800;
948 case HEADER_SCTP_DATA:
950 hdr_data_chunk = TRUE;
951 hdr_sctp_src = info->src_port;
952 hdr_sctp_dest = info->dst_port;
953 hdr_data_chunk_ppid = info->ppi;
957 hdr_ethernet_proto = 0x800;
964 max_offset = info->max_frame_length;
967 /*----------------------------------------------------------------------
968 * Clean up after text import
971 text_import_cleanup(void)