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Diffstat (limited to 'source3/utils/log2pcaphex.c')
-rw-r--r--source3/utils/log2pcaphex.c162
1 files changed, 113 insertions, 49 deletions
diff --git a/source3/utils/log2pcaphex.c b/source3/utils/log2pcaphex.c
index 20cc40ca59..072d659bf0 100644
--- a/source3/utils/log2pcaphex.c
+++ b/source3/utils/log2pcaphex.c
@@ -8,10 +8,33 @@
Portions (from capconvert.c) (C) Andrew Tridgell 1997
Portions (from text2pcap.c) (C) Ashok Narayanan 2001
- Example use with -h parameter:
- log2pcaphex < samba-log-file | text2pcap -T 139,139 - foo.pcap
-
- TODO: Have correct IP and TCP checksums.
+ Example:
+ Output NBSS(SMB) packets in hex and convert to pcap adding
+ Eth/IP/TCP headers
+
+ log2pcap -h < samba.log | text2pcap -T 139,139 - samba.pcap
+
+ Output directly to pcap format without Eth headers or TCP
+ sequence numbers
+
+ log2pcap samba.log samba.pcap
+
+ TODO:
+ - Hex to text2pcap outputs are not properly parsed in Wireshark
+ the NBSS or SMB level. This is a bug.
+ - Writing directly to pcap format doesn't include sequence numbers
+ in the TCP packets
+ - Check if a packet is a response or request and set IP to/from
+ addresses accordingly. Currently all packets come from the same
+ dummy IP and go to the same dummy IP
+ - Add a message when done parsing about the number of pacekts
+ processed
+ - Parse NBSS packet header data from log file
+ - Have correct IP and TCP checksums.
+
+ Warning:
+ Samba log level 10 outputs a max of 512 bytes from the packet data
+ section. Packets larger than this will be truncated.
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
@@ -35,8 +58,8 @@
#include <assert.h>
-bool quiet = 0;
-bool hexformat = 0;
+int quiet = 0;
+int hexformat = 0;
#define itoa(a) ((a) < 0xa?'0'+(a):'A' + (a-0xa))
@@ -95,7 +118,7 @@ typedef struct {
static hdr_tcp_t HDR_TCP = {139, 139, 0, 0, 0x50, 0, 0, 0, 0};
-static void print_pcap_header(FILE *out)
+void print_pcap_header(FILE *out)
{
struct tcpdump_file_header h;
h.magic = TCPDUMP_MAGIC;
@@ -108,7 +131,7 @@ static void print_pcap_header(FILE *out)
fwrite(&h, sizeof(struct tcpdump_file_header), 1, out);
}
-static void print_pcap_packet(FILE *out, unsigned char *data, long length, long caplen)
+void print_pcap_packet(FILE *out, unsigned char *data, long length, long caplen)
{
static int i = 0;
struct tcpdump_packet p;
@@ -121,7 +144,7 @@ static void print_pcap_packet(FILE *out, unsigned char *data, long length, long
fwrite(data, sizeof(unsigned char), caplen, out);
}
-static void print_hex_packet(FILE *out, unsigned char *data, long length)
+void print_hex_packet(FILE *out, unsigned char *data, long length)
{
long i,cur = 0;
while(cur < length) {
@@ -135,13 +158,13 @@ static void print_hex_packet(FILE *out, unsigned char *data, long length)
}
}
-static void print_netbios_packet(FILE *out, unsigned char *data, long length, long actual_length)
+void print_netbios_packet(FILE *out, unsigned char *data, long length, long actual_length)
{
unsigned char *newdata; long offset = 0;
long newlen;
newlen = length+sizeof(HDR_IP)+sizeof(HDR_TCP);
- newdata = (unsigned char *)malloc(newlen);
+ newdata = malloc(newlen);
HDR_IP.packet_length = htons(newlen);
HDR_TCP.window = htons(0x2000);
@@ -156,68 +179,115 @@ static void print_netbios_packet(FILE *out, unsigned char *data, long length, lo
}
unsigned char *curpacket = NULL;
-long curpacket_len = 0;
-
-static void read_log_msg(FILE *in, unsigned char **_buffer, long *buffersize, long *data_offset, long *data_length)
+unsigned short curpacket_len = 0;
+long line_num = 0;
+
+/* Read the log message produced by lib/util.c:show_msg() containing the:
+ * SMB_HEADER
+ * SMB_PARAMETERS
+ * SMB_DATA.ByteCount
+ *
+ * Example:
+ * [2007/04/08 20:41:39, 5] lib/util.c:show_msg(516)
+ * size=144
+ * smb_com=0x73
+ * smb_rcls=0
+ * smb_reh=0
+ * smb_err=0
+ * smb_flg=136
+ * smb_flg2=49153
+ * smb_tid=1
+ * smb_pid=65279
+ * smb_uid=0
+ * smb_mid=64
+ * smt_wct=3
+ * smb_vwv[ 0]= 117 (0x75)
+ * smb_vwv[ 1]= 128 (0x80)
+ * smb_vwv[ 2]= 1 (0x1)
+ * smb_bcc=87
+ */
+void read_log_msg(FILE *in, unsigned char **_buffer, unsigned short *buffersize, long *data_offset, long *data_length)
{
unsigned char *buffer;
int tmp; long i;
- assert(fscanf(in, " size=%ld\n", buffersize));
- *buffersize+=4; /* for netbios */
- buffer = (unsigned char *)malloc(*buffersize);
- memset(buffer, 0, *buffersize);
- /* NetBIOS */
+ assert(fscanf(in, " size=%hu\n", buffersize)); line_num++;
+ buffer = malloc(*buffersize+4); /* +4 for NBSS Header */
+ memset(buffer, 0, *buffersize+4);
+ /* NetBIOS Session Service */
buffer[0] = 0x00;
buffer[1] = 0x00;
- memcpy(buffer+2, &buffersize, 2);
+ memcpy(buffer+2, &buffersize, 2); /* TODO: need to copy as little-endian regardless of platform */
+ /* SMB Packet */
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;
+ assert(fscanf(in, " smb_com=0x%x\n", &tmp)); buffer[smb_com] = tmp; line_num++;
+ assert(fscanf(in, " smb_rcls=%d\n", &tmp)); buffer[smb_rcls] = tmp; line_num++;
+ assert(fscanf(in, " smb_reh=%d\n", &tmp)); buffer[smb_reh] = tmp; line_num++;
+ assert(fscanf(in, " smb_err=%d\n", &tmp)); memcpy(buffer+smb_err, &tmp, 2); line_num++;
+ assert(fscanf(in, " smb_flg=%d\n", &tmp)); buffer[smb_flg] = tmp; line_num++;
+ assert(fscanf(in, " smb_flg2=%d\n", &tmp)); memcpy(buffer+smb_flg2, &tmp, 2); line_num++;
+ assert(fscanf(in, " smb_tid=%d\n", &tmp)); memcpy(buffer+smb_tid, &tmp, 2); line_num++;
+ assert(fscanf(in, " smb_pid=%d\n", &tmp)); memcpy(buffer+smb_pid, &tmp, 2); line_num++;
+ assert(fscanf(in, " smb_uid=%d\n", &tmp)); memcpy(buffer+smb_uid, &tmp, 2); line_num++;
+ assert(fscanf(in, " smb_mid=%d\n", &tmp)); memcpy(buffer+smb_mid, &tmp, 2); line_num++;
+ assert(fscanf(in, " smt_wct=%d\n", &tmp)); buffer[smb_wct] = tmp; line_num++;
for(i = 0; i < buffer[smb_wct]; i++) {
- assert(fscanf(in, " smb_vwv[%*2d]=%*5d (0x%X)\n", &tmp));
+ assert(fscanf(in, " smb_vwv[%*3d]=%*5d (0x%X)\n", &tmp)); line_num++;
memcpy(buffer+smb_vwv+i*2, &tmp, 2);
}
*data_offset = smb_vwv+buffer[smb_wct]*2;
- assert(fscanf(in, " smb_bcc=%ld\n", data_length)); buffer[(*data_offset)] = *data_length;
+ assert(fscanf(in, " smb_bcc=%ld\n", data_length)); buffer[(*data_offset)] = *data_length; line_num++;
(*data_offset)+=2;
*_buffer = buffer;
}
-static long read_log_data(FILE *in, unsigned char *buffer, long data_length)
+/* Read the log message produced by lib/util.c:dump_data() containing:
+ * SMB_DATA.Bytes
+ *
+ * Example:
+ * [2007/04/08 20:41:39, 10] lib/util.c:dump_data(2243)
+ * [000] 00 55 00 6E 00 69 00 78 00 00 00 53 00 61 00 6D .U.n.i.x ...S.a.m
+ * [010] 00 62 00 61 00 20 00 33 00 2E 00 30 00 2E 00 32 .b.a. .3 ...0...2
+ * [020] 00 34 00 2D 00 49 00 73 00 69 00 6C 00 6F 00 6E .4.-.I.s .i.l.o.n
+ * [030] 00 20 00 4F 00 6E 00 65 00 46 00 53 00 20 00 76 . .O.n.e .F.S. .v
+ * [040] 00 34 00 2E 00 30 00 00 00 49 00 53 00 49 00 4C .4...0.. .I.S.I.L
+ * [050] 00 4F 00 4E 00 00 00 .O.N...
+ */
+long read_log_data(FILE *in, unsigned char *buffer, long data_length)
{
long i, addr; char real[2][16]; int ret;
unsigned int 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);
+ if(i != 0) {
+ /* Read and discard the ascii data after each line. */
+ assert(fscanf(in, " %8c %8c\n", real[0], real[1]) == 2);
}
- ret = fscanf(in, " [%03lX]", &addr);
+ ret = fscanf(in, " [%03lX]", &addr); line_num++;
if(!ret) {
- if(!quiet)fprintf(stderr, "Only first %ld bytes are logged, packet trace will be incomplete\nTry a higher log level\n", i);
+ if(!quiet)
+ fprintf(stderr, "%ld: Only first %ld bytes are logged, "
+ "packet trace will be incomplete\n", line_num, i-1);
return i-1;
}
assert(addr == i);
}
if(!fscanf(in, "%02X", &tmp)) {
- if(!quiet)fprintf(stderr, "Only first %ld bytes are logged, packet trace will be incomplete\nTry a higher log level\n", i-1);
+ if(!quiet)
+ fprintf(stderr, "%ld: Log message formated incorrectly. "
+ "Only first %ld bytes are logged, packet trace will "
+ "be incomplete\n", line_num, i-1);
+ while ((tmp = getc(in)) != '\n');
return i-1;
}
buffer[i] = tmp;
}
+
+ /* Consume the newline so we don't increment num_lines twice */
+ while ((tmp = getc(in)) != '\n');
return data_length;
}
@@ -228,13 +298,13 @@ int main (int argc, char **argv)
int opt;
poptContext pc;
char buffer[4096];
- long data_offset = 0, data_length;
+ long data_offset, data_length;
long data_bytes_read = 0;
int in_packet = 0;
struct poptOption long_options[] = {
POPT_AUTOHELP
- { "quiet", 'q', POPT_ARG_NONE, NULL, 'q', "Be quiet, don't output warnings" },
- { "hex", 'h', POPT_ARG_NONE, NULL, 'h', "Output format readable by text2pcap" },
+ { "quiet", 'q', POPT_ARG_NONE, &quiet, 0, "Be quiet, don't output warnings" },
+ { "hex", 'h', POPT_ARG_NONE, &hexformat, 0, "Output format readable by text2pcap" },
POPT_TABLEEND
};
@@ -245,12 +315,6 @@ int main (int argc, char **argv)
while((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
- case 'q':
- quiet = true;
- break;
- case 'h':
- hexformat = true;
- break;
}
}
@@ -281,7 +345,7 @@ int main (int argc, char **argv)
if(!hexformat)print_pcap_header(out);
while(!feof(in)) {
- fgets(buffer, sizeof(buffer), in);
+ fgets(buffer, sizeof(buffer), in); line_num++;
if(buffer[0] == '[') { /* Header */
if(strstr(buffer, "show_msg")) {
in_packet++;
generated by cgit (git 2.34.1) at 2024-11-24 19:25:14 +0000