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wireshark/wiretap/log3gpp.c

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/* log3gpp.c
* Routines encapsulating/dumping 3gpp protocol logs.
* The purpose of this format is to be able to log the 3GPP protocol stack on a mobile phone.
* Copyright 2008, Vincent Helfre
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include "wtap-int.h"
#include "file_wrappers.h"
#include "log3gpp.h"
#define MAX_FIRST_LINE_LENGTH 200
#define MAX_TIMESTAMP_LINE_LENGTH 100
#define MAX_LINE_LENGTH 65536
#define MAX_TIMESTAMP_LEN 32
#define MAX_SECONDS_CHARS 16
#define MAX_SUBSECOND_DECIMALS 4
#define MAX_PROTOCOL_NAME 64
#define MAX_PROTOCOL_PAR_STRING 64
/* 's' or 'r' of a packet as read from .out file */
typedef enum packet_direction_t
{
uplink,
downlink
} packet_direction_t;
typedef struct {
time_t start_secs;
guint32 start_usecs;
} log3gpp_t;
gint first_packet_offset;
gchar firstline[MAX_FIRST_LINE_LENGTH];
gchar secondline[MAX_TIMESTAMP_LINE_LENGTH];
gint secondline_length = 0;
/***********************************************************/
/* Transient data used for parsing */
/* 'Magic number' at start of 3gpp log files. */
static const gchar log3gpp_magic[] = "3GPP protocols transcript";
/* Protocol name of the packet that the packet was captured at */
static gchar protocol_name[MAX_PROTOCOL_NAME+1];
/* Optional string parameter giving info required for the protocol dissector */
static gchar protocol_parameters[MAX_PROTOCOL_PAR_STRING+1];
/************************************************************/
/* Functions called from wiretap core */
static gboolean log3gpp_read( wtap* wth, wtap_rec* rec, Buffer* buf,
int* err, gchar** err_info, gint64* data_offset);
static gboolean log3gpp_seek_read(struct wtap *wth, gint64 seek_off,
wtap_rec *rec,
Buffer *buf,
int *err, gchar **err_info);
/************************************************************/
/* Private helper functions */
static gboolean read_new_line(FILE_T fh, gint* length,
gchar* buf, size_t bufsize, int* err,
gchar** err_info);
static gboolean parse_line(char* linebuff, gint line_length, gint *seconds, gint *useconds,
long *data_offset,
gint *data_chars,
packet_direction_t *direction,
gboolean *is_text_data);
static int write_stub_header(guchar *frame_buffer, char *timestamp_string,
packet_direction_t direction);
static guchar hex_from_char(gchar c);
/*not used static gchar char_from_hex(guchar hex);*/
static gboolean get_file_time_stamp(gchar* linebuff, time_t *secs, guint32 *usecs);
static int log3gpp_file_type_subtype = -1;
void register_log3gpp(void);
/***************************************************************************/
/* Free log3gpp-specific capture info from file that was open for reading */
/***************************************************************************/
static void log3gpp_close(wtap* wth)
{
log3gpp_t* log3gpp = (log3gpp_t*)wth->priv;
/* Also free this capture info */
g_free(log3gpp);
wth->priv = NULL;
}
#if 0
static gboolean
log3gpp_dump(wtap_dumper* wdh _U_, const wtap_rec* rec _U_,
const guchar* buf _U_, int* err _U_, gchar** err_info _U_)
{
return TRUE;
}
#endif
/******************************************************/
/* Close a file we've been writing to. */
/******************************************************/
#if 0
static gboolean
log3gpp_dump_finish(wtap_dumper* wdh _U_, int* err _U_)
{
return TRUE;
}
#endif
/********************************************/
/* Open file (for reading) */
/********************************************/
wtap_open_return_val
log3gpp_open(wtap *wth, int *err, gchar **err_info _U_)
{
time_t timestamp;
guint32 usecs;
log3gpp_t *log3gpp;
wtap_open_return_val retval;
/* Buffer to hold a single text line read from the file */
static gchar linebuff[MAX_LINE_LENGTH];
gint firstline_length = 0;
/* Clear errno before reading from the file */
errno = 0;
/********************************************************************/
/* First line needs to contain at least as many characters as magic */
/*ws_warning("Open file"); */
if (!read_new_line(wth->fh, &firstline_length, linebuff,
sizeof linebuff, err, err_info)) {
if (*err != 0 && *err != WTAP_ERR_SHORT_READ) {
return WTAP_OPEN_ERROR;
}
else {
return WTAP_OPEN_NOT_MINE;
}
}
if (((size_t)firstline_length < strlen(log3gpp_magic)) ||
firstline_length >= MAX_FIRST_LINE_LENGTH)
{
retval = WTAP_OPEN_NOT_MINE;
return retval;
}
/* This file is not for us if it doesn't match our signature */
if (memcmp(log3gpp_magic, linebuff, strlen(log3gpp_magic)) != 0)
{
retval = WTAP_OPEN_NOT_MINE;
return retval;
}
/***********************************************************/
/* Second line contains file timestamp */
if (!read_new_line(wth->fh, &secondline_length,
linebuff, sizeof linebuff, err, err_info)) {
if (*err != 0 && *err != WTAP_ERR_SHORT_READ) {
return WTAP_OPEN_ERROR;
}
else {
return WTAP_OPEN_NOT_MINE;
}
}
first_packet_offset = firstline_length + secondline_length;
if ((secondline_length >= MAX_TIMESTAMP_LINE_LENGTH) ||
(!get_file_time_stamp(linebuff, &timestamp, &usecs)))
{
/* Give up if file time line wasn't valid */
retval = WTAP_OPEN_NOT_MINE;
return retval;
}
/* Allocate struct and fill in timestamp (netmon re used)*/
log3gpp = g_new(log3gpp_t, 1);
log3gpp->start_secs = timestamp;
log3gpp->start_usecs = usecs;
wth->priv = (void *)log3gpp;
/************************************************************/
/* File is for us. Fill in details so packets can be read */
/* Set our file type */
wth->file_type_subtype = log3gpp_file_type_subtype;
/* Use our own encapsulation to send all packets to our stub dissector */
wth->file_encap = WTAP_ENCAP_LOG_3GPP;
/* Callbacks for reading operations */
wth->subtype_read = log3gpp_read;
wth->subtype_seek_read = log3gpp_seek_read;
wth->subtype_close = log3gpp_close;
/* Choose microseconds (have 4 decimal places...) */
wth->file_tsprec = WTAP_TSPREC_USEC;
*err = errno;
/*
* 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);
retval = WTAP_OPEN_MINE;
return retval;
}
/**************************************************/
/* Read packet function. */
/* Look for and read the next usable packet */
/* - return TRUE and details if found */
/**************************************************/
gboolean log3gpp_read(wtap* wth, wtap_rec* rec, Buffer* buf,
int* err, gchar** err_info, gint64* data_offset)
{
gint64 offset = file_tell(wth->fh);
static gchar linebuff[MAX_LINE_LENGTH + 1];
long dollar_offset;
packet_direction_t direction;
gboolean is_text_data;
log3gpp_t *log3gpp = (log3gpp_t *)wth->priv;
/* Search for a line containing a usable packet */
while (1)
{
int line_length, seconds, useconds, data_chars;
gint64 this_offset = offset;
/* Are looking for first packet after 2nd line */
if (file_tell(wth->fh) == 0)
{
this_offset += (gint64)first_packet_offset +1+1;
}
/* Clear errno before reading from the file */
errno = 0;
/* Read a new line from file into linebuff */
if (!read_new_line(wth->fh, &line_length, linebuff,
sizeof linebuff, err, err_info)) {
if (*err != 0) {
return FALSE; /* error */
}
/* No more lines can be read, so quit. */
break;
}
/* Try to parse the line as a frame record */
if (parse_line(linebuff, line_length, &seconds, &useconds,
&dollar_offset,
&data_chars,
&direction,
&is_text_data))
{
guchar *frame_buffer;
int n;
int stub_offset = 0;
char timestamp_string[MAX_TIMESTAMP_LEN+1];
/*not used gint64 *pkey = NULL;*/
g_snprintf(timestamp_string, 32, "%d.%04d", seconds, useconds/100);
/* All packets go to 3GPP protocol stub dissector */
rec->rec_header.packet_header.pkt_encap = WTAP_ENCAP_LOG_3GPP;
rec->rec_type = REC_TYPE_PACKET;
rec->block = wtap_block_create(WTAP_BLOCK_PACKET);
rec->presence_flags = WTAP_HAS_TS;
/* Set data_offset to the beginning of the line we're returning.
This will be the seek_off parameter when this frame is re-read.
*/
*data_offset = this_offset;
/* Fill in timestamp (capture base + packet offset) */
rec->ts.secs = log3gpp->start_secs + seconds;
if ((log3gpp->start_usecs + useconds) >= 1000000)
{
rec->ts.secs++;
}
rec->ts.nsecs =
((log3gpp->start_usecs + useconds) % 1000000) *1000;
if (!is_text_data)
{
/* Get buffer pointer ready */
ws_buffer_assure_space(buf,
strlen(timestamp_string)+1 + /* timestamp */
strlen(protocol_name)+1 + /* Protocol name */
1 + /* direction */
(size_t)(data_chars/2));
frame_buffer = ws_buffer_start_ptr(buf);
/*********************/
/* Write stub header */
stub_offset = write_stub_header(frame_buffer, timestamp_string,
direction);
/* Binary data length is half bytestring length + stub header */
rec->rec_header.packet_header.len = data_chars/2 + stub_offset;
rec->rec_header.packet_header.caplen = data_chars/2 + stub_offset;
/********************************/
/* Copy packet data into buffer */
for (n=0; n <= data_chars; n+=2)
{
frame_buffer[stub_offset + n/2] = (hex_from_char(linebuff[dollar_offset+n]) << 4) |
hex_from_char(linebuff[dollar_offset+n+1]);
}
*err = errno = 0;
return TRUE;
}
else
{
/* Get buffer pointer ready */
ws_buffer_assure_space(buf,
strlen(timestamp_string)+1 + /* timestamp */
strlen(protocol_name)+1 + /* Protocol name */
1 + /* direction */
data_chars);
frame_buffer = ws_buffer_start_ptr(buf);
/*********************/
/* Write stub header */
stub_offset = write_stub_header(frame_buffer, timestamp_string,
direction);
/* Binary data length is bytestring length + stub header */
rec->rec_header.packet_header.len = data_chars + stub_offset;
rec->rec_header.packet_header.caplen = data_chars + stub_offset;
/* do not convert the ascii char */
memcpy(&frame_buffer[stub_offset],&linebuff[dollar_offset],data_chars);
frame_buffer[stub_offset+data_chars-1]= '\0';
*err = errno = 0;
return TRUE;
}
}
}
/* No packet details to return... */
*err = errno;
return FALSE;
}
/**************************************************/
/* Read & seek function. */
/**************************************************/
static gboolean
log3gpp_seek_read(wtap *wth, gint64 seek_off,
wtap_rec *rec _U_ , Buffer *buf,
int *err, gchar **err_info)
{
long dollar_offset;
static gchar linebuff[MAX_LINE_LENGTH + 1];
packet_direction_t direction;
int seconds, useconds, data_chars;
gboolean is_text_data;
log3gpp_t* log3gpp = (log3gpp_t*)wth->priv;
int length = 0;
guchar *frame_buffer;
/* Reset errno */
*err = errno = 0;
/* Seek to beginning of packet */
if (file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1)
{
return FALSE;
}
/* Re-read whole line (this really should succeed) */
if (!read_new_line(wth->random_fh, &length, linebuff,
sizeof linebuff, err, err_info)) {
return FALSE;
}
/* Try to parse this line again (should succeed as re-reading...) */
if (parse_line(linebuff, length, &seconds, &useconds,
&dollar_offset,
&data_chars,
&direction,
&is_text_data))
{
int n;
int stub_offset = 0;
char timestamp_string[32];
g_snprintf(timestamp_string, 32, "%d.%04d", seconds, useconds/100);
/* Make sure all packets go to log3gpp dissector */
rec->rec_header.packet_header.pkt_encap = WTAP_ENCAP_LOG_3GPP;
rec->rec_type = REC_TYPE_PACKET;
rec->block = wtap_block_create(WTAP_BLOCK_PACKET);
rec->presence_flags = WTAP_HAS_TS;
/* Fill in timestamp (capture base + packet offset) */
rec->ts.secs = log3gpp->start_secs + seconds;
if ((log3gpp->start_usecs + useconds) >= 1000000)
{
rec->ts.secs++;
}
rec->ts.nsecs =
((log3gpp->start_usecs + useconds) % 1000000) * 1000;
/*********************/
/* Write stub header */
ws_buffer_assure_space(buf,
strlen(timestamp_string)+1 + /* timestamp */
strlen(protocol_name)+1 + /* Protocol name */
1 + /* direction */
data_chars);
frame_buffer = ws_buffer_start_ptr(buf);
stub_offset = write_stub_header(frame_buffer, timestamp_string,
direction);
if (!is_text_data)
{
/********************************/
/* Copy packet data into buffer */
for (n=0; n <= data_chars; n+=2)
{
frame_buffer[stub_offset + n/2] = (hex_from_char(linebuff[dollar_offset+n]) << 4) |
hex_from_char(linebuff[dollar_offset+n+1]);
}
*err = errno = 0;
return TRUE;
}
else
{
/* do not convert the ascii char */
memcpy(&frame_buffer[stub_offset],&linebuff[dollar_offset],data_chars);
frame_buffer[stub_offset+data_chars-1] = '\0';
*err = errno = 0;
return TRUE;
}
}
/* If get here, must have failed */
*err = errno;
*err_info = g_strdup_printf("prot 3gpp: seek_read failed to read/parse "
"line at position %" G_GINT64_MODIFIER "d",
seek_off);
return FALSE;
}
/***************************/
/* Dump functions */
/***************************/
/*****************************************************/
/* The file that we are writing to has been opened. */
/* Set other dump callbacks. */
/*****************************************************/
#if 0
gboolean log3gpp_dump_open(wtap_dumper *wdh, gboolean cant_seek _U_, int *err _U_)
{
/* Fill in other dump callbacks */
wdh->subtype_write = log3gpp_dump;
wdh->subtype_finish = log3gpp_dump_finish;
return TRUE;
}
#endif
/*****************************************/
/* Write a single packet out to the file */
/*****************************************/
/*
static gboolean do_fwrite(const void *data, size_t size, size_t count, FILE *stream, int *err_p)
{
size_t nwritten;
nwritten = fwrite(data, size, count, stream);
if (nwritten != count) {
if (nwritten == 0 && ferror(stream))
{
*err_p = errno;
}
else
{
*err_p = WTAP_ERR_SHORT_WRITE;
}
return FALSE;
}
return TRUE;
}*/
/****************************/
/* Private helper functions */
/****************************/
/**********************************************************************/
/* Read a new line from the file, starting at offset. */
/* - writes data to static var linebuff */
/* - on return 'offset' will point to the next position to read from */
/* - return TRUE if this read is successful */
/**********************************************************************/
static gboolean
read_new_line(FILE_T fh, gint* length,
gchar* linebuff, size_t linebuffsize, int* err, gchar** err_info)
{
/* Read in a line */
gint64 pos_before = file_tell(fh);
if (file_gets(linebuff, (int)linebuffsize - 1, fh) == NULL) {
/* No characters found, or error */
*err = file_error(fh, err_info);
return FALSE;
}
/* Set length (avoiding strlen()) and offset.. */
*length = (gint)(file_tell(fh) - pos_before);
/* ...but don't want to include newline in line length */
if (*length > 0 && linebuff[*length - 1] == '\n') {
linebuff[*length - 1] = '\0';
*length = *length - 1;
}
/* Nor do we want '\r' (as will be written when log is created on windows) */
if (*length > 0 && linebuff[*length - 1] == '\r') {
linebuff[*length - 1] = '\0';
*length = *length - 1;
}
return TRUE;
}
/**********************************************************************/
/* Parse a line from buffer, by identifying: */
/* - context, port and direction of packet */
/* - timestamp */
/* - data position and length */
/* Return TRUE if this packet looks valid and can be displayed */
/**********************************************************************/
gboolean parse_line(gchar* linebuff, gint line_length, gint *seconds, gint *useconds,
long *data_offset, gint *data_chars,
packet_direction_t *direction,
gboolean *is_text_data)
{
int n = 0;
/*not used int variant_digits = 0;*/
/*not used int variant = 1;*/
int protocol_chars = 0;
int prot_option_chars = 0;
char seconds_buff[MAX_SECONDS_CHARS+1];
int seconds_chars;
char subsecond_decimals_buff[MAX_SUBSECOND_DECIMALS+1];
int subsecond_decimals_chars;
/*********************************************************************/
/* Find and read the timestamp */
/*********************************************************************/
/* Now scan to the next digit, which should be the start of the timestamp */
for (; !g_ascii_isdigit((guchar)linebuff[n]) && (n < line_length); n++);
if (n >= line_length)
{
return FALSE;
}
/* Seconds */
for (seconds_chars = 0;
(linebuff[n] != '.') &&
(seconds_chars <= MAX_SECONDS_CHARS) &&
(n < line_length);
n++, seconds_chars++)
{
if (!g_ascii_isdigit((guchar)linebuff[n]))
{
/* Found a non-digit before decimal point. Fail */
return FALSE;
}
seconds_buff[seconds_chars] = linebuff[n];
}
if (seconds_chars > MAX_SECONDS_CHARS || n >= line_length)
{
/* Didn't fit in buffer. Fail rather than use truncated */
return FALSE;
}
/* Convert found value into number */
seconds_buff[seconds_chars] = '\0';
/* Already know they are digits, so avoid expense of ws_strtoi32() */
int multiplier = 1;
*seconds = 0;
for (int d = seconds_chars - 1; d >= 0; d--) {
*seconds += ((seconds_buff[d] - '0') * multiplier);
multiplier *= 10;
}
/* The decimal point must follow the last of the seconds digits */
if (linebuff[n] != '.')
{
return FALSE;
}
/* Skip it */
n++;
/* Subsecond decimal digits (expect 4-digit accuracy) */
for (subsecond_decimals_chars = 0;
(linebuff[n] != ' ') &&
(subsecond_decimals_chars <= MAX_SUBSECOND_DECIMALS) &&
(n < line_length);
n++, subsecond_decimals_chars++)
{
if (!g_ascii_isdigit((guchar)linebuff[n]))
{
return FALSE;
}
subsecond_decimals_buff[subsecond_decimals_chars] = linebuff[n];
}
if (subsecond_decimals_chars > MAX_SUBSECOND_DECIMALS || n >= line_length)
{
/* More numbers than expected - give up */
return FALSE;
}
/* Convert found value into microseconds */
subsecond_decimals_buff[subsecond_decimals_chars] = '\0';
/* Already know they are digits, so avoid expense of ws_strtoi32() */
*useconds = ((subsecond_decimals_buff[0] - '0') * 100000) +
((subsecond_decimals_buff[1] - '0') * 10000) +
((subsecond_decimals_buff[2] - '0') * 1000) +
((subsecond_decimals_buff[3] - '0') * 100);
/* Space character must follow end of timestamp */
if (linebuff[n] != ' ')
{
return FALSE;
}
n++;
/*********************************************************************/
/* Find and read protocol name */
/*********************************************************************/
/* Read context name until find ' ' */
for (protocol_chars = 0;
(linebuff[n] != ' ') && (protocol_chars < MAX_PROTOCOL_NAME) && (n < line_length);
n++, protocol_chars++)
{
if (!g_ascii_isalnum((guchar)linebuff[n]) && linebuff[n] != '_' && linebuff[n] != '.' && linebuff[n] != '-')
{
return FALSE;
}
protocol_name[protocol_chars] = linebuff[n];
}
if (protocol_chars == MAX_PROTOCOL_NAME || n >= line_length)
{
/* If doesn't fit, fail rather than truncate */
return FALSE;
}
protocol_name[protocol_chars] = '\0';
/* Space char must follow protocol name */
if (linebuff[n] != ' ')
{
return FALSE;
}
/* Skip it */
n++;
/* Scan ahead to the next space */
for (; (!g_ascii_isalnum((guchar)linebuff[n])) && (n < line_length); n++);
if (n >= line_length)
{
return FALSE;
}
if (strcmp(protocol_name,"TXT") == 0)
{
*direction = uplink;
*data_offset = n;
*data_chars = line_length - n;
*is_text_data = TRUE;
}
else
{
/* Next character gives direction of message (must be 'u' or 'd') */
if (linebuff[n] == 'u')
{
*direction = uplink;
}
else if (linebuff[n] == 'd')
{
*direction = downlink;
}
else
{
return FALSE;
}
n++;
/* Now skip ahead to find start of data (marked by '$') */
for (; (n <= line_length) && (linebuff[n] != '$') && (prot_option_chars <= MAX_PROTOCOL_PAR_STRING);
n++,prot_option_chars++)
{
protocol_parameters[prot_option_chars] = linebuff[n];
}
protocol_parameters[prot_option_chars] = '\0';
if (prot_option_chars == MAX_PROTOCOL_PAR_STRING || n >= line_length)
{
/* If doesn't fit, fail rather than truncate */
return FALSE;
}
/* Skip it */
n++;
/* Set offset to data start within line */
*data_offset = n;
/* Set number of chars that comprise the hex string protocol data */
*data_chars = line_length - n;
*is_text_data = FALSE;
}
return TRUE;
}
/*****************************************************************/
/* Write the stub info to the data buffer while reading a packet */
/*****************************************************************/
int write_stub_header(guchar *frame_buffer, char *timestamp_string,
packet_direction_t direction)
{
int stub_offset = 0;
/* Timestamp within file */
(void) g_strlcpy((char*)&frame_buffer[stub_offset], timestamp_string, MAX_TIMESTAMP_LEN+1);
stub_offset += (int)(strlen(timestamp_string) + 1);
/* Protocol name */
(void) g_strlcpy((char*)&frame_buffer[stub_offset], protocol_name, MAX_PROTOCOL_NAME+1);
stub_offset += (int)(strlen(protocol_name) + 1);
/* Direction */
frame_buffer[stub_offset] = direction;
stub_offset++;
/* Option string (might be string of length 0) */
(void) g_strlcpy((char*)&frame_buffer[stub_offset], protocol_parameters,MAX_PROTOCOL_PAR_STRING+1);
stub_offset += (int)(strlen(protocol_parameters) + 1);
return stub_offset;
}
/********************************************************/
/* Return hex nibble equivalent of hex string character */
/********************************************************/
guchar hex_from_char(gchar c)
{
if ((c >= '0') && (c <= '9'))
{
return c - '0';
}
if ((c >= 'a') && (c <= 'f'))
{
return 0x0a + (c - 'a');
}
if ((c >= 'A') && (c <= 'F'))
{
return 0x0a + (c - 'A');
}
/* Not a valid hex string character */
return 0xff;
}
/********************************************************/
/* Return character corresponding to hex nibble value */
/********************************************************/
/*gchar char_from_hex(guchar hex)
{
static char hex_lookup[16] =
{ '0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
if (hex > 15)
{
return '?';
}
return hex_lookup[hex];
}*/
/************************************************************************/
/* Parse year, month, day, hour, minute, seconds out of formatted line. */
/* Set secs and usecs as output */
/* Return FALSE if no valid time can be read */
/************************************************************************/
gboolean get_file_time_stamp(gchar* linebuff, time_t *secs, guint32 *usecs)
{
int n;
struct tm tm;
#define MAX_MONTH_LETTERS 9
char month[MAX_MONTH_LETTERS+1];
int day, year, hour, minute, second;
int scan_found;
/* If line longer than expected, file is probably not correctly formatted */
if (strlen(linebuff) > MAX_TIMESTAMP_LINE_LENGTH)
{
return FALSE;
}
/**************************************************************/
/* First is month. Read until get a space following the month */
for (n=0; (n < MAX_MONTH_LETTERS) && (linebuff[n] != ' '); n++)
{
month[n] = linebuff[n];
}
month[n] = '\0';
if (strcmp(month, "January" ) == 0) tm.tm_mon = 0;
else if (strcmp(month, "February" ) == 0) tm.tm_mon = 1;
else if (strcmp(month, "March" ) == 0) tm.tm_mon = 2;
else if (strcmp(month, "April" ) == 0) tm.tm_mon = 3;
else if (strcmp(month, "May" ) == 0) tm.tm_mon = 4;
else if (strcmp(month, "June" ) == 0) tm.tm_mon = 5;
else if (strcmp(month, "July" ) == 0) tm.tm_mon = 6;
else if (strcmp(month, "August" ) == 0) tm.tm_mon = 7;
else if (strcmp(month, "September") == 0) tm.tm_mon = 8;
else if (strcmp(month, "October" ) == 0) tm.tm_mon = 9;
else if (strcmp(month, "November" ) == 0) tm.tm_mon = 10;
else if (strcmp(month, "December" ) == 0) tm.tm_mon = 11;
else
{
/* Give up if not found a properly-formatted date */
return FALSE;
}
/* Skip space char */
n++;
/********************************************************/
/* Scan for remaining numerical fields */
scan_found = sscanf(linebuff+n, "%d, %d %d:%d:%d.%u",
&day, &year, &hour, &minute, &second, usecs);
if (scan_found != 6)
{
/* Give up if not all found */
return FALSE;
}
/******************************************************/
/* Fill in remaining fields and return it in a time_t */
tm.tm_year = year - 1900;
tm.tm_mday = day;
tm.tm_hour = hour;
tm.tm_min = minute;
tm.tm_sec = second;
tm.tm_isdst = -1; /* daylight saving time info not known */
/* Get seconds from this time */
*secs = mktime(&tm);
/* Multiply 4 digits given to get micro-seconds */
*usecs = *usecs * 100;
return TRUE;
}
static const struct supported_block_type log3gpp_blocks_supported[] = {
/*
* We support packet blocks, with no comments or other options.
*/
{ WTAP_BLOCK_PACKET, MULTIPLE_BLOCKS_SUPPORTED, NO_OPTIONS_SUPPORTED }
};
static const struct file_type_subtype_info log3gpp_info = {
"3GPP Log", "3gpp_log", "*.log", NULL,
TRUE, BLOCKS_SUPPORTED(log3gpp_blocks_supported),
NULL, NULL, NULL
};
void register_log3gpp(void)
{
log3gpp_file_type_subtype = wtap_register_file_type_subtype(&log3gpp_info);
/*
* Register name for backwards compatibility with the
* wtap_filetypes table in Lua.
*/
wtap_register_backwards_compatibility_lua_name("LOG_3GPP",
log3gpp_file_type_subtype);
}
#if 0
/* Register with wtap */
void wtap_register_phonelog(void) {
static struct file_type_subtype_info fi =
{ "3GPP Log", "3gpp_log", "*.log", NULL, TRUE, FALSE, 0, NULL, NULL, NULL };
static struct open_info phonelog_oi =
{ "3gpp_log", OPEN_INFO_MAGIC, log3gpp_open, "*.log", NULL, NULL };
wtap_register_open_info(&phonelog_oi, TRUE);
encap_3gpp_log = wtap_register_encap_type("3GPP Log","3gpp_log");
wf_3gpp_log = wtap_register_file_type_subtype(&fi, WTAP_FILE_TYPE_SUBTYPE_UNKNOWN);
}
#endif
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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