2009-01-07 07:21:31 +00:00
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/* dct3trace.c
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* Routines for reading signalling traces generated by Gammu (www.gammu.org)
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* from Nokia DCT3 phones in Netmonitor mode.
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*
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2009-06-24 20:27:58 +00:00
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* gammu --nokiadebug nhm5_587.txt v18-19
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2009-01-07 07:21:31 +00:00
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*
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* Duncan Salerno <duncan.salerno@googlemail.com>
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*
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* Wiretap Library
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* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
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*
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2018-04-30 07:47:58 +00:00
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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2009-01-07 07:21:31 +00:00
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#include "config.h"
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#include "wtap-int.h"
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#include "dct3trace.h"
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#include "file_wrappers.h"
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#include <stdlib.h>
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#include <string.h>
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2016-09-09 08:30:12 +00:00
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#include <errno.h>
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2009-01-07 07:21:31 +00:00
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2016-09-07 12:07:51 +00:00
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#include <wsutil/strtoi.h>
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2009-01-07 07:21:31 +00:00
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/*
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Example downlink data:
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<?xml version="1.0"?>
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<dump>
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<l1 direction="down" logicalchannel="96" physicalchannel="19" sequence="268116" error="0" timeshift="2992" bsic="22" data="31063F100DD0297A53E1020103C802398E0B2B2B2B2B2B" >
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<l2 data="063F100DD0297A53E1020103" rest="C802398E0B2B2B2B2B2B" >
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</l2>
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</l1>
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</dump>
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Example uplink data (no raw L1):
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<?xml version="1.0"?>
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<dump>
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<l1 direction="up" logicalchannel="112" >
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<l2 type="U" subtype="Unknown" p="0" data="061500400000000000000000000000000000" >
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</l2>
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</l1>
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</dump>
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*/
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/* Magic text to check */
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static const char dct3trace_magic_line1[] = "<?xml version=\"1.0\"?>";
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static const char dct3trace_magic_line2[] = "<dump>";
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static const char dct3trace_magic_record_start[] = "<l1 ";
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static const char dct3trace_magic_record_end[] = "</l1>";
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static const char dct3trace_magic_l2_start[] = "<l2 ";
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2013-10-21 23:57:42 +00:00
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#if 0 /* Not used ?? */
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2009-01-07 07:21:31 +00:00
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static const char dct3trace_magic_l2_end[] = "</l2>";
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2013-10-21 23:57:42 +00:00
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#endif
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2009-01-07 07:21:31 +00:00
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static const char dct3trace_magic_end[] = "</dump>";
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2009-06-24 20:27:58 +00:00
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#define MAX_PACKET_LEN 23
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2009-01-07 07:21:31 +00:00
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2019-04-05 01:56:27 +00:00
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static gboolean dct3trace_read(wtap *wth, wtap_rec *rec,
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Buffer *buf, int *err, gchar **err_info, gint64 *data_offset);
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2014-05-23 10:50:02 +00:00
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static gboolean dct3trace_seek_read(wtap *wth, gint64 seek_off,
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2018-02-09 00:19:12 +00:00
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wtap_rec *rec, Buffer *buf, int *err, gchar **err_info);
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2009-01-07 07:21:31 +00:00
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|
wiretap: register most built-in file types from its module.
Remove most of the built-in file types from the table in
wiretap/file_access.c and, instead, have the file types register
themselves, using wtap_register_file_type_subtypes().
This reduces the source code changes needed to add a new file type from
three (add the handler, add the file type to the table in file_access.c,
add a #define for the file type in wiretap/wtap.h) to one (add the
handler). (It also requires adding the handler's source file to
wiretap/CMakeLists.txt, but that's required in both cases.)
A few remain because the WTAP_FILE_TYPE_SUBTYPE_ #define is used
elsewhere; that needs to be fixed.
Fix the wiretap/CMakefile.txt file to scan k12text.l, as that now
contains a registration routine. In the process, avoid scanning files
that don't implement a file type and won't ever have a registration
routine.
Add a Lua routine to fetch the total number of file types; we use that
in some code to construct the wtap_filetypes table, which we need to do
in order to continue to have all the values that used to come from the
WTAP_FILE_TYPE_SUBTYPE_ types.
While we're at it, add modelines to a file that lacked them.
2021-02-14 08:34:10 +00:00
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static int dct3trace_file_type_subtype = -1;
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void register_dct3trace(void);
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2009-01-07 07:21:31 +00:00
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/*
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2019-07-28 04:20:27 +00:00
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* Following 3 functions taken from gsmdecode-0.7bis, with permission:
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*
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* https://web.archive.org/web/20091218112927/http://wiki.thc.org/gsm
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2009-01-07 07:21:31 +00:00
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*/
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static int
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hc2b(unsigned char hex)
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{
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2014-10-17 20:37:11 +00:00
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hex = g_ascii_tolower(hex);
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2009-01-07 07:21:31 +00:00
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if ((hex >= '0') && (hex <= '9'))
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return hex - '0';
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if ((hex >= 'a') && (hex <= 'f'))
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return hex - 'a' + 10;
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return -1;
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}
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static int
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2013-06-21 02:59:54 +00:00
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hex2bin(guint8 *out, guint8 *out_end, char *in)
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2009-01-07 07:21:31 +00:00
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{
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2013-06-17 21:18:47 +00:00
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guint8 *out_start = out;
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2009-01-07 07:21:31 +00:00
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int is_low = 0;
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int c;
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2013-06-17 21:18:47 +00:00
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while (*in != '\0')
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2009-01-07 07:21:31 +00:00
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{
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2013-06-21 02:59:54 +00:00
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c = hc2b(*(unsigned char *)in);
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2009-01-07 07:21:31 +00:00
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if (c < 0)
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{
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in++;
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continue;
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}
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2013-06-17 21:18:47 +00:00
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if (out == out_end)
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{
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/* Too much data */
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return -1;
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}
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2009-01-07 07:21:31 +00:00
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if (is_low == 0)
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{
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2013-06-17 21:18:47 +00:00
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*out = c << 4;
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2009-01-07 07:21:31 +00:00
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is_low = 1;
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} else {
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2013-06-17 21:18:47 +00:00
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*out |= (c & 0x0f);
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2009-01-07 07:21:31 +00:00
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is_low = 0;
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out++;
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}
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in++;
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}
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2009-03-07 05:13:44 +00:00
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return (int)(out - out_start);
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2009-01-07 07:21:31 +00:00
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}
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2016-09-09 08:30:12 +00:00
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static gboolean
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xml_get_int(int *val, const char *str, const char *pattern, int *err, gchar **err_info)
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2009-01-07 07:21:31 +00:00
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{
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2016-09-09 08:30:12 +00:00
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const char *ptr, *endptr;
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2009-01-07 07:21:31 +00:00
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char *start, *end;
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char buf[32];
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2013-06-21 02:59:54 +00:00
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ptr = strstr(str, pattern);
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2016-09-09 08:30:12 +00:00
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if (ptr == NULL) {
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*err = WTAP_ERR_BAD_FILE;
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*err_info = g_strdup_printf("dct3trace: %s not found", pattern);
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return FALSE;
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}
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/*
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* XXX - should we just skip past the pattern and check for ="?
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*/
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2009-01-07 07:21:31 +00:00
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start = strchr(ptr, '"');
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2016-09-09 08:30:12 +00:00
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if (start == NULL) {
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*err = WTAP_ERR_BAD_FILE;
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*err_info = g_strdup_printf("dct3trace: opening quote for %s not found", pattern);
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return FALSE;
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}
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2009-01-07 07:21:31 +00:00
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start++;
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2016-09-09 08:30:12 +00:00
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/*
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* XXX - should we just use ws_strtoi32() and check whether
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* the character following the number is a "?
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*/
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2009-01-07 07:21:31 +00:00
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end = strchr(start, '"');
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2016-09-09 08:30:12 +00:00
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if (end == NULL) {
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*err = WTAP_ERR_BAD_FILE;
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*err_info = g_strdup_printf("dct3trace: closing quote for %s not found", pattern);
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return FALSE;
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}
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if (end - start > 31) {
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*err = WTAP_ERR_BAD_FILE;
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*err_info = g_strdup_printf("dct3trace: %s value is too long", pattern);
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return FALSE;
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}
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2009-01-07 07:21:31 +00:00
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memcpy(buf, start, end - start);
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buf[end - start] = '\0';
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2016-09-09 08:30:12 +00:00
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/*
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* XXX - should we allow negative numbers in all cases? Or are
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* there cases where the number is unsigned?
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*/
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if (!ws_strtoi32(buf, &endptr, val)) {
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*err = WTAP_ERR_BAD_FILE;
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if (errno == ERANGE) {
|
2016-09-09 08:31:23 +00:00
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if (*val < 0)
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2016-09-09 08:30:12 +00:00
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*err_info = g_strdup_printf("dct3trace: %s value is too small, minimum is %d", pattern, *val);
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else
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*err_info = g_strdup_printf("dct3trace: %s value is too large, maximum is %d", pattern, *val);
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} else
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*err_info = g_strdup_printf("dct3trace: %s value \"%s\" not a number", pattern, buf);
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return FALSE;
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}
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if (*endptr != '\0') {
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*err = WTAP_ERR_BAD_FILE;
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*err_info = g_strdup_printf("dct3trace: %s value \"%s\" not a number", pattern, buf);
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return FALSE;
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}
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return TRUE;
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2009-01-07 07:21:31 +00:00
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}
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2014-10-09 23:44:15 +00:00
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wtap_open_return_val dct3trace_open(wtap *wth, int *err, gchar **err_info)
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2009-01-07 07:21:31 +00:00
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{
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char line1[64], line2[64];
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Do not call wtap_file_read_unknown_bytes() or
wtap_file_read_expected_bytes() from an open routine - open routines are
supposed to return -1 on error, 0 if the file doesn't appear to be a
file of the specified type, or 1 if the file does appear to be a file of
the specified type, but those macros will cause the caller to return
FALSE on errors (so that, even if there's an I/O error, it reports "the
file isn't a file of the specified type" rather than "we got an error
trying to read the file").
When doing reads in an open routine before we've concluded that the file
is probably of the right type, return 0, rather than -1, if we get
WTAP_ERR_SHORT_READ - if we don't have enough data to check whether a
file is of a given type, we should keep trying other types, not give up.
For reads done *after* we've concluded the file is probably of the right
type, if a read doesn't return the number of bytes we asked for, but
returns an error of 0, return WTAP_ERR_SHORT_READ - the file is
apparently cut short.
For NetMon and NetXRay/Windows Sniffer files, use a #define for the
magic number size, and use that for both magic numbers.
svn path=/trunk/; revision=46803
2012-12-27 12:19:25 +00:00
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|
/* Look for Gammu DCT3 trace header */
|
2014-05-09 05:18:49 +00:00
|
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|
if (file_gets(line1, sizeof(line1), wth->fh) == NULL ||
|
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file_gets(line2, sizeof(line2), wth->fh) == NULL)
|
2009-01-07 07:21:31 +00:00
|
|
|
{
|
2014-05-09 05:18:49 +00:00
|
|
|
*err = file_error(wth->fh, err_info);
|
Do not call wtap_file_read_unknown_bytes() or
wtap_file_read_expected_bytes() from an open routine - open routines are
supposed to return -1 on error, 0 if the file doesn't appear to be a
file of the specified type, or 1 if the file does appear to be a file of
the specified type, but those macros will cause the caller to return
FALSE on errors (so that, even if there's an I/O error, it reports "the
file isn't a file of the specified type" rather than "we got an error
trying to read the file").
When doing reads in an open routine before we've concluded that the file
is probably of the right type, return 0, rather than -1, if we get
WTAP_ERR_SHORT_READ - if we don't have enough data to check whether a
file is of a given type, we should keep trying other types, not give up.
For reads done *after* we've concluded the file is probably of the right
type, if a read doesn't return the number of bytes we asked for, but
returns an error of 0, return WTAP_ERR_SHORT_READ - the file is
apparently cut short.
For NetMon and NetXRay/Windows Sniffer files, use a #define for the
magic number size, and use that for both magic numbers.
svn path=/trunk/; revision=46803
2012-12-27 12:19:25 +00:00
|
|
|
if (*err != 0 && *err != WTAP_ERR_SHORT_READ)
|
2014-10-09 23:44:15 +00:00
|
|
|
return WTAP_OPEN_ERROR;
|
|
|
|
return WTAP_OPEN_NOT_MINE;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
|
Do not call wtap_file_read_unknown_bytes() or
wtap_file_read_expected_bytes() from an open routine - open routines are
supposed to return -1 on error, 0 if the file doesn't appear to be a
file of the specified type, or 1 if the file does appear to be a file of
the specified type, but those macros will cause the caller to return
FALSE on errors (so that, even if there's an I/O error, it reports "the
file isn't a file of the specified type" rather than "we got an error
trying to read the file").
When doing reads in an open routine before we've concluded that the file
is probably of the right type, return 0, rather than -1, if we get
WTAP_ERR_SHORT_READ - if we don't have enough data to check whether a
file is of a given type, we should keep trying other types, not give up.
For reads done *after* we've concluded the file is probably of the right
type, if a read doesn't return the number of bytes we asked for, but
returns an error of 0, return WTAP_ERR_SHORT_READ - the file is
apparently cut short.
For NetMon and NetXRay/Windows Sniffer files, use a #define for the
magic number size, and use that for both magic numbers.
svn path=/trunk/; revision=46803
2012-12-27 12:19:25 +00:00
|
|
|
/* Don't compare line endings */
|
|
|
|
if( strncmp(dct3trace_magic_line1, line1, strlen(dct3trace_magic_line1)) != 0 ||
|
|
|
|
strncmp(dct3trace_magic_line2, line2, strlen(dct3trace_magic_line2)) != 0)
|
2009-01-07 07:21:31 +00:00
|
|
|
{
|
2014-10-09 23:44:15 +00:00
|
|
|
return WTAP_OPEN_NOT_MINE;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
|
2014-05-09 05:18:49 +00:00
|
|
|
wth->file_encap = WTAP_ENCAP_GSM_UM;
|
wiretap: register most built-in file types from its module.
Remove most of the built-in file types from the table in
wiretap/file_access.c and, instead, have the file types register
themselves, using wtap_register_file_type_subtypes().
This reduces the source code changes needed to add a new file type from
three (add the handler, add the file type to the table in file_access.c,
add a #define for the file type in wiretap/wtap.h) to one (add the
handler). (It also requires adding the handler's source file to
wiretap/CMakeLists.txt, but that's required in both cases.)
A few remain because the WTAP_FILE_TYPE_SUBTYPE_ #define is used
elsewhere; that needs to be fixed.
Fix the wiretap/CMakefile.txt file to scan k12text.l, as that now
contains a registration routine. In the process, avoid scanning files
that don't implement a file type and won't ever have a registration
routine.
Add a Lua routine to fetch the total number of file types; we use that
in some code to construct the wtap_filetypes table, which we need to do
in order to continue to have all the values that used to come from the
WTAP_FILE_TYPE_SUBTYPE_ types.
While we're at it, add modelines to a file that lacked them.
2021-02-14 08:34:10 +00:00
|
|
|
wth->file_type_subtype = dct3trace_file_type_subtype;
|
2014-05-09 05:18:49 +00:00
|
|
|
wth->snapshot_length = 0; /* not known */
|
|
|
|
wth->subtype_read = dct3trace_read;
|
|
|
|
wth->subtype_seek_read = dct3trace_seek_read;
|
2014-09-28 18:37:06 +00:00
|
|
|
wth->file_tsprec = WTAP_TSPREC_SEC;
|
2009-01-07 07:21:31 +00:00
|
|
|
|
2020-07-29 08:30:54 +00:00
|
|
|
/*
|
|
|
|
* Add an IDB; we don't know how many interfaces were
|
|
|
|
* involved, so we just say one interface, about which
|
|
|
|
* we only know the link-layer type, snapshot length,
|
|
|
|
* and time stamp resolution.
|
|
|
|
*/
|
|
|
|
wtap_add_generated_idb(wth);
|
|
|
|
|
2014-10-09 23:44:15 +00:00
|
|
|
return WTAP_OPEN_MINE;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2018-02-09 00:19:12 +00:00
|
|
|
static gboolean dct3trace_get_packet(FILE_T fh, wtap_rec *rec,
|
2013-06-17 21:18:47 +00:00
|
|
|
Buffer *buf, int *err, gchar **err_info)
|
2009-01-07 07:21:31 +00:00
|
|
|
{
|
2013-06-21 02:59:54 +00:00
|
|
|
char line[1024];
|
2013-06-17 21:18:47 +00:00
|
|
|
guint8 databuf[MAX_PACKET_LEN], *bufp;
|
2009-01-07 07:21:31 +00:00
|
|
|
gboolean have_data = FALSE;
|
2013-05-17 13:37:36 +00:00
|
|
|
int len = 0;
|
2009-01-07 07:21:31 +00:00
|
|
|
|
2013-06-17 21:18:47 +00:00
|
|
|
bufp = &databuf[0];
|
2009-01-07 07:21:31 +00:00
|
|
|
while (file_gets(line, sizeof(line), fh) != NULL)
|
|
|
|
{
|
|
|
|
if( memcmp(dct3trace_magic_end, line, strlen(dct3trace_magic_end)) == 0 )
|
|
|
|
{
|
|
|
|
/* Return on end of file </dump> */
|
|
|
|
*err = 0;
|
2014-05-23 10:50:02 +00:00
|
|
|
return FALSE;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
else if( memcmp(dct3trace_magic_record_end, line, strlen(dct3trace_magic_record_end)) == 0 )
|
|
|
|
{
|
|
|
|
/* Return on end of record </l1> */
|
|
|
|
if( have_data )
|
|
|
|
{
|
2013-05-17 00:21:16 +00:00
|
|
|
/* We've got a full packet! */
|
2018-02-09 00:19:12 +00:00
|
|
|
rec->rec_type = REC_TYPE_PACKET;
|
|
|
|
rec->presence_flags = 0; /* no time stamp, no separate "on the wire" length */
|
|
|
|
rec->ts.secs = 0;
|
|
|
|
rec->ts.nsecs = 0;
|
|
|
|
rec->rec_header.packet_header.caplen = len;
|
|
|
|
rec->rec_header.packet_header.len = len;
|
2013-05-17 00:21:16 +00:00
|
|
|
|
2009-01-07 07:21:31 +00:00
|
|
|
*err = 0;
|
2013-06-17 21:18:47 +00:00
|
|
|
|
|
|
|
/* Make sure we have enough room for the packet */
|
2018-02-09 00:19:12 +00:00
|
|
|
ws_buffer_assure_space(buf, rec->rec_header.packet_header.caplen);
|
|
|
|
memcpy( ws_buffer_start_ptr(buf), databuf, rec->rec_header.packet_header.caplen );
|
2013-06-17 21:18:47 +00:00
|
|
|
|
2014-05-23 10:50:02 +00:00
|
|
|
return TRUE;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* If not got any data return error */
|
2011-12-13 09:53:50 +00:00
|
|
|
*err = WTAP_ERR_BAD_FILE;
|
2016-06-06 02:24:47 +00:00
|
|
|
*err_info = g_strdup("dct3trace: record without data");
|
2014-05-23 10:50:02 +00:00
|
|
|
return FALSE;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
else if( memcmp(dct3trace_magic_record_start, line, strlen(dct3trace_magic_record_start)) == 0 )
|
|
|
|
{
|
|
|
|
/* Parse L1 header <l1 ...>*/
|
2012-04-28 03:07:04 +00:00
|
|
|
int channel, tmp;
|
2009-01-07 07:21:31 +00:00
|
|
|
char *ptr;
|
|
|
|
|
2018-02-09 00:19:12 +00:00
|
|
|
rec->rec_header.packet_header.pseudo_header.gsm_um.uplink = !strstr(line, "direction=\"down\"");
|
2016-09-09 08:30:12 +00:00
|
|
|
if (!xml_get_int(&channel, line, "logicalchannel", err, err_info))
|
|
|
|
return FALSE;
|
2009-01-07 07:21:31 +00:00
|
|
|
|
|
|
|
/* Parse downlink only fields */
|
2018-02-09 00:19:12 +00:00
|
|
|
if( !rec->rec_header.packet_header.pseudo_header.gsm_um.uplink )
|
2009-01-07 07:21:31 +00:00
|
|
|
{
|
2016-09-09 08:30:12 +00:00
|
|
|
if (!xml_get_int(&tmp, line, "physicalchannel", err, err_info))
|
|
|
|
return FALSE;
|
2018-02-09 00:19:12 +00:00
|
|
|
rec->rec_header.packet_header.pseudo_header.gsm_um.arfcn = tmp;
|
2016-09-09 08:30:12 +00:00
|
|
|
if (!xml_get_int(&tmp, line, "sequence", err, err_info))
|
|
|
|
return FALSE;
|
2018-02-09 00:19:12 +00:00
|
|
|
rec->rec_header.packet_header.pseudo_header.gsm_um.tdma_frame = tmp;
|
2016-09-09 08:30:12 +00:00
|
|
|
if (!xml_get_int(&tmp, line, "bsic", err, err_info))
|
|
|
|
return FALSE;
|
2018-02-09 00:19:12 +00:00
|
|
|
rec->rec_header.packet_header.pseudo_header.gsm_um.bsic = tmp;
|
2016-09-09 08:30:12 +00:00
|
|
|
if (!xml_get_int(&tmp, line, "error", err, err_info))
|
|
|
|
return FALSE;
|
2018-02-09 00:19:12 +00:00
|
|
|
rec->rec_header.packet_header.pseudo_header.gsm_um.error = tmp;
|
2016-09-09 08:30:12 +00:00
|
|
|
if (!xml_get_int(&tmp, line, "timeshift", err, err_info))
|
|
|
|
return FALSE;
|
2018-02-09 00:19:12 +00:00
|
|
|
rec->rec_header.packet_header.pseudo_header.gsm_um.timeshift = tmp;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
switch( channel )
|
|
|
|
{
|
2018-02-09 00:19:12 +00:00
|
|
|
case 128: rec->rec_header.packet_header.pseudo_header.gsm_um.channel = GSM_UM_CHANNEL_SDCCH; break;
|
|
|
|
case 112: rec->rec_header.packet_header.pseudo_header.gsm_um.channel = GSM_UM_CHANNEL_SACCH; break;
|
|
|
|
case 176: rec->rec_header.packet_header.pseudo_header.gsm_um.channel = GSM_UM_CHANNEL_FACCH; break;
|
|
|
|
case 96: rec->rec_header.packet_header.pseudo_header.gsm_um.channel = GSM_UM_CHANNEL_CCCH; break;
|
|
|
|
case 80: rec->rec_header.packet_header.pseudo_header.gsm_um.channel = GSM_UM_CHANNEL_BCCH; break;
|
|
|
|
default: rec->rec_header.packet_header.pseudo_header.gsm_um.channel = GSM_UM_CHANNEL_UNKNOWN; break;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
|
2013-06-17 21:18:47 +00:00
|
|
|
/* Read data (if have it) into databuf */
|
2009-01-07 07:21:31 +00:00
|
|
|
ptr = strstr(line, "data=\"");
|
|
|
|
if( ptr )
|
|
|
|
{
|
|
|
|
have_data = TRUE; /* If has data... */
|
2013-06-17 21:18:47 +00:00
|
|
|
len = hex2bin(bufp, &databuf[MAX_PACKET_LEN], ptr+6);
|
|
|
|
if (len == -1)
|
|
|
|
{
|
|
|
|
*err = WTAP_ERR_BAD_FILE;
|
2018-02-09 00:19:12 +00:00
|
|
|
*err_info = g_strdup_printf("dct3trace: record length %d too long", rec->rec_header.packet_header.caplen);
|
2014-05-23 10:50:02 +00:00
|
|
|
return FALSE;
|
2013-06-17 21:18:47 +00:00
|
|
|
}
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
else if( !have_data && memcmp(dct3trace_magic_l2_start, line, strlen(dct3trace_magic_l2_start)) == 0 )
|
|
|
|
{
|
2009-06-24 20:27:58 +00:00
|
|
|
/* For uplink packets we might not get the raw L1, so have to recreate it from the L2 */
|
2009-01-07 07:21:31 +00:00
|
|
|
/* Parse L2 header if didn't get data from L1 <l2 ...> */
|
2013-06-17 21:18:47 +00:00
|
|
|
int data_len;
|
2009-01-07 07:21:31 +00:00
|
|
|
char *ptr = strstr(line, "data=\"");
|
|
|
|
|
|
|
|
if( !ptr )
|
|
|
|
{
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
have_data = TRUE;
|
|
|
|
|
2013-06-17 21:18:47 +00:00
|
|
|
/*
|
|
|
|
* We know we have no data already, so we know
|
|
|
|
* we have enough room for the header.
|
|
|
|
*/
|
2018-02-09 00:19:12 +00:00
|
|
|
if( rec->rec_header.packet_header.pseudo_header.gsm_um.channel == GSM_UM_CHANNEL_SACCH || rec->rec_header.packet_header.pseudo_header.gsm_um.channel == GSM_UM_CHANNEL_FACCH || rec->rec_header.packet_header.pseudo_header.gsm_um.channel == GSM_UM_CHANNEL_SDCCH )
|
2009-01-07 07:21:31 +00:00
|
|
|
{
|
|
|
|
/* Add LAPDm B header */
|
2013-06-17 21:18:47 +00:00
|
|
|
memset(bufp, 0x1, 2);
|
2013-05-17 00:21:16 +00:00
|
|
|
len = 3;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* Add LAPDm Bbis header */
|
2013-05-17 00:21:16 +00:00
|
|
|
len = 1;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
2013-06-17 21:18:47 +00:00
|
|
|
bufp += len;
|
2009-01-07 07:21:31 +00:00
|
|
|
|
2013-06-17 21:18:47 +00:00
|
|
|
data_len = hex2bin(bufp, &databuf[MAX_PACKET_LEN], ptr+6);
|
|
|
|
if (data_len == -1)
|
|
|
|
{
|
|
|
|
*err = WTAP_ERR_BAD_FILE;
|
2018-02-09 00:19:12 +00:00
|
|
|
*err_info = g_strdup_printf("dct3trace: record length %d too long", rec->rec_header.packet_header.caplen);
|
2014-05-23 10:50:02 +00:00
|
|
|
return FALSE;
|
2013-06-17 21:18:47 +00:00
|
|
|
}
|
2013-05-17 00:21:16 +00:00
|
|
|
len += data_len;
|
2009-01-07 07:21:31 +00:00
|
|
|
|
|
|
|
/* Add LAPDm length byte */
|
2013-06-17 21:18:47 +00:00
|
|
|
*(bufp - 1) = data_len << 2 | 0x1;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-04-21 09:41:52 +00:00
|
|
|
*err = file_error(fh, err_info);
|
2009-01-07 07:21:31 +00:00
|
|
|
if (*err == 0)
|
|
|
|
{
|
|
|
|
*err = WTAP_ERR_SHORT_READ;
|
|
|
|
}
|
2014-05-23 10:50:02 +00:00
|
|
|
return FALSE;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Find the next packet and parse it; called from wtap_read(). */
|
2019-04-05 01:56:27 +00:00
|
|
|
static gboolean dct3trace_read(wtap *wth, wtap_rec *rec, Buffer *buf,
|
|
|
|
int *err, gchar **err_info, gint64 *data_offset)
|
2009-01-07 07:21:31 +00:00
|
|
|
{
|
2014-05-09 05:18:49 +00:00
|
|
|
*data_offset = file_tell(wth->fh);
|
2009-01-07 07:21:31 +00:00
|
|
|
|
2019-04-05 01:56:27 +00:00
|
|
|
return dct3trace_get_packet(wth->fh, rec, buf, err, err_info);
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Used to read packets in random-access fashion */
|
2014-05-23 10:50:02 +00:00
|
|
|
static gboolean dct3trace_seek_read(wtap *wth, gint64 seek_off,
|
2018-02-09 00:19:12 +00:00
|
|
|
wtap_rec *rec, Buffer *buf, int *err, gchar **err_info)
|
2009-01-07 07:21:31 +00:00
|
|
|
{
|
2014-05-09 05:18:49 +00:00
|
|
|
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
|
2009-01-07 07:21:31 +00:00
|
|
|
{
|
2014-05-23 10:50:02 +00:00
|
|
|
return FALSE;
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
|
|
|
|
2018-02-09 00:19:12 +00:00
|
|
|
return dct3trace_get_packet(wth->random_fh, rec, buf, err, err_info);
|
2009-01-07 07:21:31 +00:00
|
|
|
}
|
2015-01-02 00:45:22 +00:00
|
|
|
|
wiretap: have file handlers advertise blocks and options supported.
Instead of a "supports name resolution" Boolean and bitflags for types of
comments supported, provide a list of block types that the file
type/subtype supports, with each block type having a list of options
supported. Indicate whether "supported" means "one instance" or
"multiple instances".
"Supports" doesn't just mean "can be written", it also means "could be
read".
Rename WTAP_BLOCK_IF_DESCRIPTION to WTAP_BLOCK_IF_ID_AND_INFO, to
indicate that it provides, in addition to information about the
interface, an ID (implicitly, in pcapng files, by its ordinal number)
that is associated with every packet in the file. Emphasize that in
comments - just because your capture file format can list the interfaces
on which a capture was done, that doesn't mean it supports this; it
doesn't do so if the file doesn't indicate, for every packet, on which
of those interfaces it was captured (I'm looking at *you*, Microsoft
Network Monitor...).
Use APIs to query that information to do what the "does this file
type/subtype support name resolution information", "does this file
type/subtype support all of these comment types", and "does this file
type/subtype support - and require - interface IDs" APIs did.
Provide backwards compatibility for Lua.
This allows us to eliminate the WTAP_FILE_TYPE_SUBTYPE_ values for IBM's
iptrace; do so.
2021-02-21 22:18:04 +00:00
|
|
|
static const struct supported_block_type dct3trace_blocks_supported[] = {
|
|
|
|
/*
|
|
|
|
* We support packet blocks, with no comments or other options.
|
|
|
|
*/
|
|
|
|
{ WTAP_BLOCK_PACKET, MULTIPLE_BLOCKS_SUPPORTED, NO_OPTIONS_SUPPORTED }
|
|
|
|
};
|
|
|
|
|
wiretap: register most built-in file types from its module.
Remove most of the built-in file types from the table in
wiretap/file_access.c and, instead, have the file types register
themselves, using wtap_register_file_type_subtypes().
This reduces the source code changes needed to add a new file type from
three (add the handler, add the file type to the table in file_access.c,
add a #define for the file type in wiretap/wtap.h) to one (add the
handler). (It also requires adding the handler's source file to
wiretap/CMakeLists.txt, but that's required in both cases.)
A few remain because the WTAP_FILE_TYPE_SUBTYPE_ #define is used
elsewhere; that needs to be fixed.
Fix the wiretap/CMakefile.txt file to scan k12text.l, as that now
contains a registration routine. In the process, avoid scanning files
that don't implement a file type and won't ever have a registration
routine.
Add a Lua routine to fetch the total number of file types; we use that
in some code to construct the wtap_filetypes table, which we need to do
in order to continue to have all the values that used to come from the
WTAP_FILE_TYPE_SUBTYPE_ types.
While we're at it, add modelines to a file that lacked them.
2021-02-14 08:34:10 +00:00
|
|
|
static const struct file_type_subtype_info dct3trace_info = {
|
|
|
|
"Gammu DCT3 trace", "dct3trace", "xml", NULL,
|
wiretap: have file handlers advertise blocks and options supported.
Instead of a "supports name resolution" Boolean and bitflags for types of
comments supported, provide a list of block types that the file
type/subtype supports, with each block type having a list of options
supported. Indicate whether "supported" means "one instance" or
"multiple instances".
"Supports" doesn't just mean "can be written", it also means "could be
read".
Rename WTAP_BLOCK_IF_DESCRIPTION to WTAP_BLOCK_IF_ID_AND_INFO, to
indicate that it provides, in addition to information about the
interface, an ID (implicitly, in pcapng files, by its ordinal number)
that is associated with every packet in the file. Emphasize that in
comments - just because your capture file format can list the interfaces
on which a capture was done, that doesn't mean it supports this; it
doesn't do so if the file doesn't indicate, for every packet, on which
of those interfaces it was captured (I'm looking at *you*, Microsoft
Network Monitor...).
Use APIs to query that information to do what the "does this file
type/subtype support name resolution information", "does this file
type/subtype support all of these comment types", and "does this file
type/subtype support - and require - interface IDs" APIs did.
Provide backwards compatibility for Lua.
This allows us to eliminate the WTAP_FILE_TYPE_SUBTYPE_ values for IBM's
iptrace; do so.
2021-02-21 22:18:04 +00:00
|
|
|
FALSE, BLOCKS_SUPPORTED(dct3trace_blocks_supported),
|
wiretap: register most built-in file types from its module.
Remove most of the built-in file types from the table in
wiretap/file_access.c and, instead, have the file types register
themselves, using wtap_register_file_type_subtypes().
This reduces the source code changes needed to add a new file type from
three (add the handler, add the file type to the table in file_access.c,
add a #define for the file type in wiretap/wtap.h) to one (add the
handler). (It also requires adding the handler's source file to
wiretap/CMakeLists.txt, but that's required in both cases.)
A few remain because the WTAP_FILE_TYPE_SUBTYPE_ #define is used
elsewhere; that needs to be fixed.
Fix the wiretap/CMakefile.txt file to scan k12text.l, as that now
contains a registration routine. In the process, avoid scanning files
that don't implement a file type and won't ever have a registration
routine.
Add a Lua routine to fetch the total number of file types; we use that
in some code to construct the wtap_filetypes table, which we need to do
in order to continue to have all the values that used to come from the
WTAP_FILE_TYPE_SUBTYPE_ types.
While we're at it, add modelines to a file that lacked them.
2021-02-14 08:34:10 +00:00
|
|
|
NULL, NULL, NULL
|
|
|
|
};
|
|
|
|
|
|
|
|
void register_dct3trace(void)
|
|
|
|
{
|
2021-02-24 03:10:35 +00:00
|
|
|
dct3trace_file_type_subtype = wtap_register_file_type_subtype(&dct3trace_info);
|
wiretap: more work on file type/subtypes.
Provide a wiretap routine to get an array of all savable file
type/subtypes, sorted with pcap and pcapng at the top, followed by the
other types, sorted either by the name or the description.
Use that routine to list options for the -F flag for various commands
Rename wtap_get_savable_file_types_subtypes() to
wtap_get_savable_file_types_subtypes_for_file(), to indicate that it
provides an array of all file type/subtypes in which a given file can be
saved. Have it sort all types, other than the default type/subtype and,
if there is one, the "other" type (both of which are put at the top), by
the name or the description.
Don't allow wtap_register_file_type_subtypes() to override any existing
registrations; have them always register a new type. In that routine,
if there are any emply slots in the table, due to an entry being
unregistered, use it rather than allocating a new slot.
Don't allow unregistration of built-in types.
Rename the "dump open table" to the "file type/subtype table", as it has
entries for all types/subtypes, even if we can't write them.
Initialize that table in a routine that pre-allocates the GArray before
filling it with built-in types/subtypes, so it doesn't keep getting
reallocated.
Get rid of wtap_num_file_types_subtypes - it's just a copy of the size
of the GArray.
Don't have wtap_file_type_subtype_description() crash if handed an
file type/subtype that isn't a valid array index - just return NULL, as
we do with wtap_file_type_subtype_name().
In wtap_name_to_file_type_subtype(), don't use WTAP_FILE_TYPE_SUBTYPE_
names for the backwards-compatibility names - map those names to the
current names, and then look them up. This reduces the number of
uses of hardwired WTAP_FILE_TYPE_SUBTYPE_ values.
Clean up the type of wtap_module_count - it has no need to be a gulong.
Have built-in wiretap file handlers register names to be used for their
file type/subtypes, rather than building the table in init.lua.
Add a new Lua C function get_wtap_filetypes() to construct the
wtap_filetypes table, based on the registered names, and use it in
init.lua.
Add a #define WSLUA_INTERNAL_FUNCTION to register functions intended
only for internal use in init.lua, so they can be made available from
Lua without being documented.
Get rid of WTAP_NUM_FILE_TYPES_SUBTYPES - most code has no need to use
it, as it can just request arrays of types, and the space of
type/subtype codes can be sparse due to registration in any case, so
code has to be careful using it.
wtap_get_num_file_types_subtypes() is no longer used, so remove it. It
returns the number of elements in the file type/subtype array, which is
not necessarily the name of known file type/subtypes, as there may have
been some deregistered types, and those types do *not* get removed from
the array, they just get cleared so that they're available for future
allocation (we don't want the indices of any registered types to changes
if another type is deregistered, as those indicates are the type/subtype
values, so we can't shrink the array).
Clean up white space and remove some comments that shouldn't have been
added.
2021-02-17 06:24:47 +00:00
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/*
|
|
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* Register name for backwards compatibility with the
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|
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* wtap_filetypes table in Lua.
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|
*/
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wtap_register_backwards_compatibility_lua_name("DCT3TRACE",
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|
dct3trace_file_type_subtype);
|
wiretap: register most built-in file types from its module.
Remove most of the built-in file types from the table in
wiretap/file_access.c and, instead, have the file types register
themselves, using wtap_register_file_type_subtypes().
This reduces the source code changes needed to add a new file type from
three (add the handler, add the file type to the table in file_access.c,
add a #define for the file type in wiretap/wtap.h) to one (add the
handler). (It also requires adding the handler's source file to
wiretap/CMakeLists.txt, but that's required in both cases.)
A few remain because the WTAP_FILE_TYPE_SUBTYPE_ #define is used
elsewhere; that needs to be fixed.
Fix the wiretap/CMakefile.txt file to scan k12text.l, as that now
contains a registration routine. In the process, avoid scanning files
that don't implement a file type and won't ever have a registration
routine.
Add a Lua routine to fetch the total number of file types; we use that
in some code to construct the wtap_filetypes table, which we need to do
in order to continue to have all the values that used to come from the
WTAP_FILE_TYPE_SUBTYPE_ types.
While we're at it, add modelines to a file that lacked them.
2021-02-14 08:34:10 +00:00
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}
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2015-01-02 00:45:22 +00:00
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/*
|
2019-07-26 18:43:17 +00:00
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|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
2015-01-02 00:45:22 +00:00
|
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|
*
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* Local variables:
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* c-basic-offset: 8
|
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
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|
* :indentSize=8:tabSize=8:noTabs=false:
|
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|
|
*/
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