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/*
Unix SMB/CIFS implementation.
Utility to extract pcap files from samba (log level 10) log files
Copyright (C) Jelmer Vernooij 2003
Thanks to Tim Potter for the genial idea
Example use: log2pcaphex < samba-log-file | text2pcap -T 139,139 - foo.pcap
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include <assert.h>
int quiet = 0;
#define itoa(a) ((a) < 0xa?'0'+(a):'A' + (a-0xa))
void print_packet(FILE *out, unsigned char *data, long length)
{
long i,cur = 0;int tmp;
while(cur < length) {
fprintf(out, "%06X ", cur);
for(i = cur; i < length && i < cur + 16; i++) {
fprintf(out, "%02x ", data[i]);
}
cur = i;
fprintf(out, "\n");
}
}
unsigned char *curpacket = NULL;
long curpacket_len = 0;
void read_log_msg(FILE *in, unsigned char **_buffer, long *buffersize, long *data_offset, long *data_length)
{
unsigned char *buffer;
int tmp; long i;
assert(fscanf(in, " size=%d\n", buffersize));
*buffersize+=4; /* for netbios */
buffer = malloc(*buffersize);
memset(buffer, 0, *buffersize);
/* NetBIOS */
buffer[0] = 0x00;
buffer[1] = 0x00;
memcpy(buffer+2, &buffersize, 2);
buffer[4] = 0xFF;
buffer[5] = 'S';
buffer[6] = 'M';
buffer[7] = 'B';
assert(fscanf(in, " smb_com=0x%x\n", &tmp)); buffer[smb_com] = tmp;
assert(fscanf(in, " smb_rcls=%d\n", &tmp)); buffer[smb_rcls] = tmp;
assert(fscanf(in, " smb_reh=%d\n", &tmp)); buffer[smb_reh] = tmp;
assert(fscanf(in, " smb_err=%d\n", &tmp)); memcpy(buffer+smb_err, &tmp, 2);
assert(fscanf(in, " smb_flg=%d\n", &tmp)); buffer[smb_flg] = tmp;
assert(fscanf(in, " smb_flg2=%d\n", &tmp)); memcpy(buffer+smb_flg2, &tmp, 2);
assert(fscanf(in, " smb_tid=%d\n", &tmp)); memcpy(buffer+smb_tid, &tmp, 2);
assert(fscanf(in, " smb_pid=%d\n", &tmp)); memcpy(buffer+smb_pid, &tmp, 2);
assert(fscanf(in, " smb_uid=%d\n", &tmp)); memcpy(buffer+smb_uid, &tmp, 2);
assert(fscanf(in, " smb_mid=%d\n", &tmp)); memcpy(buffer+smb_mid, &tmp, 2);
assert(fscanf(in, " smt_wct=%d\n", &tmp)); buffer[smb_wct] = tmp;
for(i = 0; i < buffer[smb_wct]; i++) {
assert(fscanf(in, " smb_vwv[%*2d]=%*5d (0x%X)\n", &tmp));
memcpy(buffer+smb_vwv+i*2, &tmp, 2);
}
*data_offset = smb_vwv+buffer[smb_wct]*2;
assert(fscanf(in, " smb_bcc=%d\n", data_length)); buffer[(*data_offset)] = *data_length;
(*data_offset)+=2;
*_buffer = buffer;
}
void read_log_data(FILE *in, unsigned char *buffer, long data_length)
{
long i, addr; char real[2][16]; int ret;
unsigned char tmp;
for(i = 0; i < data_length; i++) {
if(i % 16 == 0){
if(i != 0) { /* Read data after each line */
assert(fscanf(in, "%8s %8s", real[0], real[1]) == 2);
}
ret = fscanf(in, " [%03X]", &addr);
if(!ret) {
if(!quiet)fprintf(stderr, "Only first %d bytes are logged, packet trace will be incomplete\nTry a higher log level\n", i);
return;
}
assert(addr == i);
}
if(!fscanf(in, "%02X", &tmp)) {
if(!quiet)fprintf(stderr, "Only first %d bytes are logged, packet trace will be incomplete\nTry a higher log level\n", i-1);
return;
}
buffer[i] = tmp;
}
}
int main (int argc, char **argv)
{
const char *infile, *outfile;
FILE *out, *in;
int opt;
int c;
poptContext pc;
char buffer[4096];
long data_offset, data_length;
int in_packet = 0;
struct poptOption long_options[] = {
POPT_AUTOHELP
{ "quiet", 'q', POPT_ARG_NONE, &quiet, 0, "Be quiet, don't output warnings" },
POPT_TABLEEND
};
pc = poptGetContext(NULL, argc, (const char **) argv, long_options,
POPT_CONTEXT_KEEP_FIRST);
poptSetOtherOptionHelp(pc, "[<infile> [<outfile>]]");
while((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
}
}
poptGetArg(pc); /* Drop argv[0], the program name */
infile = poptGetArg(pc);
if(infile) {
in = fopen(infile, "r");
if(!in) {
perror("fopen");
return 1;
}
} else in = stdin;
outfile = poptGetArg(pc);
if(outfile) {
out = fopen(outfile, "w+");
if(!out) {
perror("fopen");
fprintf(stderr, "Can't find %s, using stdout...\n", outfile);
}
}
if(!outfile) out = stdout;
while(!feof(in)) {
fgets(buffer, sizeof(buffer), in);
if(buffer[0] == '[') { /* Header */
if(strstr(buffer, "show_msg")) {
in_packet++;
if(in_packet == 1)continue;
read_log_msg(in, &curpacket, &curpacket_len, &data_offset, &data_length);
} else if(in_packet && strstr(buffer, "dump_data")) {
read_log_data(in, curpacket+data_offset, data_length);
} else {
if(in_packet){
print_packet(out, curpacket, curpacket_len);
free(curpacket);
}
in_packet = 0;
}
}
}
return 0;
}
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