/*--------------------------------------------------------------------
* Function: LogTCPHeader(TextLog* )
*
* Purpose: Dump the TCP header info to the given TextLog
*
* Arguments: log => pointer to TextLog to print data to
*
* Returns: void function
*--------------------------------------------------------------------
*/
void LogTCPHeader(TextLog* log, Packet * p)
{
char tcpFlags[9];
if(p->tcph == NULL)
{
TextLog_Print(log, "TCP header truncated\n");
return;
}
/* print TCP flags */
CreateTCPFlagString(p, tcpFlags);
TextLog_Puts(log, tcpFlags); /* We don't care about the NULL */
/* print other TCP info */
TextLog_Print(log, " Seq: 0x%lX Ack: 0x%lX Win: 0x%X TcpLen: %d",
(u_long) ntohl(p->tcph->th_seq),
(u_long) ntohl(p->tcph->th_ack),
ntohs(p->tcph->th_win), TCP_OFFSET(p->tcph) << 2);
if((p->tcph->th_flags & TH_URG) != 0)
{
TextLog_Print(log, " UrgPtr: 0x%X\n", (uint16_t) ntohs(p->tcph->th_urp));
}
else
{
TextLog_NewLine(log);
}
/* dump the TCP options */
if(p->tcp_option_count != 0)
{
LogTcpOptions(log, p);
}
}
static void LogBuffer (const char* s, const uint8_t* p, unsigned n)
{
char hex[(3*LOG_CHARS)+1];
char txt[LOG_CHARS+1];
unsigned odx = 0, idx = 0, at = 0;
if ( !p )
return;
if ( n > snort_conf->event_trace_max )
n = snort_conf->event_trace_max;
for ( idx = 0; idx < n; idx++)
{
uint8_t byte = p[idx];
sprintf(hex + 3*odx, "%2.02X ", byte);
txt[odx++] = isprint(byte) ? byte : '.';
if ( odx == LOG_CHARS )
{
txt[odx] = hex[3*odx] = '\0';
TextLog_Print(tlog, "%s[%2u] %s %s\n", s, at, hex, txt);
at = idx + 1;
odx = 0;
}
}
if ( odx )
{
txt[odx] = hex[3*odx] = '\0';
TextLog_Print(tlog, "%s[%2u] %-48.48s %s\n", s, at, hex, txt);
}
}
static void LogSLLHeader(TextLog* log, Packet* p)
{
switch (ntohs(p->sllh->sll_pkttype)) {
case LINUX_SLL_HOST:
TextLog_Puts(log, "< ");
break;
case LINUX_SLL_BROADCAST:
TextLog_Puts(log, "B ");
break;
case LINUX_SLL_MULTICAST:
TextLog_Puts(log, "M ");
break;
case LINUX_SLL_OTHERHOST:
TextLog_Puts(log, "P ");
break;
case LINUX_SLL_OUTGOING:
TextLog_Puts(log, "> ");
break;
default:
TextLog_Puts(log, "? ");
break;
}
/* mac addr */
TextLog_Print(log, "l/l len: %i l/l type: 0x%X %X:%X:%X:%X:%X:%X\n",
htons(p->sllh->sll_halen), ntohs(p->sllh->sll_hatype),
p->sllh->sll_addr[0], p->sllh->sll_addr[1], p->sllh->sll_addr[2],
p->sllh->sll_addr[3], p->sllh->sll_addr[4], p->sllh->sll_addr[5]);
/* protocol and pkt size */
TextLog_Print(log, "pkt type:0x%X proto: 0x%X len:0x%X\n",
ntohs(p->sllh->sll_pkttype),
ntohs(p->sllh->sll_protocol), p->pkth->len);
}
/*--------------------------------------------------------------------
* Function: LogEmbeddedICMPHeader(TextLog* , ICMPHdr *)
*
* Purpose: Prints the 64 bits of the original IP payload in an ICMP packet
* that requires it
*
* Arguments: log => pointer to TextLog
* icmph => ICMPHdr struct pointing to original ICMP
*
* Returns: void function
*--------------------------------------------------------------------
*/
static void LogEmbeddedICMPHeader(TextLog* log, const ICMPHdr *icmph)
{
if (log == NULL || icmph == NULL)
return;
TextLog_Print(log, "Type: %d Code: %d Csum: %u",
icmph->type, icmph->code, ntohs(icmph->csum));
switch (icmph->type)
{
case ICMP_DEST_UNREACH:
case ICMP_TIME_EXCEEDED:
case ICMP_SOURCE_QUENCH:
break;
case ICMP_PARAMETERPROB:
if (icmph->code == 0)
TextLog_Print(log, " Ptr: %u", icmph->s_icmp_pptr);
break;
case ICMP_REDIRECT:
#ifdef SUP_IP6
// XXX-IPv6 "NOT YET IMPLEMENTED - ICMP printing"
#else
TextLog_Print(log, " New Gwy: %s", inet_ntoa(icmph->s_icmp_gwaddr));
#endif
break;
case ICMP_ECHO:
case ICMP_ECHOREPLY:
case ICMP_TIMESTAMP:
case ICMP_TIMESTAMPREPLY:
case ICMP_INFO_REQUEST:
case ICMP_INFO_REPLY:
case ICMP_ADDRESS:
case ICMP_ADDRESSREPLY:
TextLog_Print(log, " Id: %u SeqNo: %u",
ntohs(icmph->s_icmp_id), ntohs(icmph->s_icmp_seq));
break;
case ICMP_ROUTER_ADVERTISE:
TextLog_Print(log, " Addrs: %u Size: %u Lifetime: %u",
icmph->s_icmp_num_addrs, icmph->s_icmp_wpa,
ntohs(icmph->s_icmp_lifetime));
break;
default:
break;
}
TextLog_NewLine(log);
return;
}
void EventTrace_Term (void)
{
if ( tlog )
{
time_t now = time(NULL);
const char* ts = ctime(&now);
TextLog_Print(tlog, "\nTraced %u events\n", nEvents);
TextLog_Print(tlog, "Trace stopped at %s", ts);
TextLog_Term(tlog);
}
}
/*--------------------------------------------------------------------
* Function: LogUDPHeader(TextLog* )
*
* Purpose: Dump the UDP header to the given TextLog
*
* Arguments: log => pointer to TextLog
*
* Returns: void function
*--------------------------------------------------------------------
*/
void LogUDPHeader(TextLog* log, Packet* p)
{
if(p->udph == NULL)
{
TextLog_Print(log, "UDP header truncated\n");
return;
}
/* not much to do here... */
TextLog_Print(log, "Len: %d\n", ntohs(p->udph->uh_len) - UDP_HEADER_LEN);
}
/*--------------------------------------------------------------------
* Function: LogEthHeader()
*
* Purpose: Print the packet Ethernet header to the given TextLog
*
* Arguments: log => pointer to TextLog to print to
*
* Returns: void function
*--------------------------------------------------------------------
*/
static void LogEthHeader(TextLog* log, Packet* p)
{
/* src addr */
TextLog_Print(log, "%X:%X:%X:%X:%X:%X -> ", p->eh->ether_src[0],
p->eh->ether_src[1], p->eh->ether_src[2], p->eh->ether_src[3],
p->eh->ether_src[4], p->eh->ether_src[5]);
/* dest addr */
TextLog_Print(log, "%X:%X:%X:%X:%X:%X ", p->eh->ether_dst[0],
p->eh->ether_dst[1], p->eh->ether_dst[2], p->eh->ether_dst[3],
p->eh->ether_dst[4], p->eh->ether_dst[5]);
/* protocol and pkt size */
TextLog_Print(log, "type:0x%X len:0x%X\n", ntohs(p->eh->ether_type), p->pkth->len);
}
void EventTrace_Init (void)
{
if ( snort_conf->event_trace_max > 0 )
{
time_t now = time(NULL);
const char* ts = ctime(&now);
char buf[STD_BUF];
const char* dir = snort_conf->log_dir ? snort_conf->log_dir : ".";
snprintf(buf, sizeof(buf), "%s/%s", dir, snort_conf->event_trace_file);
tlog = TextLog_Init (buf, 128, 8*1024*1024);
TextLog_Print(tlog, "\nTrace started at %s", ts);
TextLog_Print(tlog, "Trace max_data is %u bytes\n", snort_conf->event_trace_max);
}
}
void LogTrHeader(TextLog* log, Packet* p)
{
TextLog_Print(log, "%X:%X:%X:%X:%X:%X -> ", p->trh->saddr[0],
p->trh->saddr[1], p->trh->saddr[2], p->trh->saddr[3],
p->trh->saddr[4], p->trh->saddr[5]);
TextLog_Print(log, "%X:%X:%X:%X:%X:%X\n", p->trh->daddr[0],
p->trh->daddr[1], p->trh->daddr[2], p->trh->daddr[3],
p->trh->daddr[4], p->trh->daddr[5]);
TextLog_Print(log, "access control:0x%X frame control:0x%X\n", p->trh->ac,
p->trh->fc);
if(!p->trhllc)
return;
TextLog_Print(log, "DSAP: 0x%X SSAP 0x%X protoID: %X%X%X Ethertype: %X\n",
p->trhllc->dsap, p->trhllc->ssap, p->trhllc->protid[0],
p->trhllc->protid[1], p->trhllc->protid[2], p->trhllc->ethertype);
if(p->trhmr)
{
TextLog_Print(log, "RIF structure is present:\n");
TextLog_Print(log, "bcast: 0x%X length: 0x%X direction: 0x%X largest"
"fr. size: 0x%X res: 0x%X\n",
TRH_MR_BCAST(p->trhmr), TRH_MR_LEN(p->trhmr),
TRH_MR_DIR(p->trhmr), TRH_MR_LF(p->trhmr),
TRH_MR_RES(p->trhmr));
TextLog_Print(log, "rseg -> %X:%X:%X:%X:%X:%X:%X:%X\n",
p->trhmr->rseg[0], p->trhmr->rseg[1], p->trhmr->rseg[2],
p->trhmr->rseg[3], p->trhmr->rseg[4], p->trhmr->rseg[5],
p->trhmr->rseg[6], p->trhmr->rseg[7]);
}
}
/*--------------------------------------------------------------------
* Function: LogPriorityData()
*
* Purpose: Prints out priority data associated with an alert
*
* Arguments: log => pointer to TextLog to write the data to
* doNewLine => tack a \n to the end of the line or not (bool)
*
* Returns: void function
*--------------------------------------------------------------------
*/
void LogPriorityData(TextLog* log, uint32_t cid, uint32_t priority, bool doNewLine)
{
ClassType *cn = ClassTypeLookupById(barnyard2_conf, cid);
if ( cn != NULL )
{
TextLog_Print(
log, "[Classification: %s] [Priority: %d] ",
cn->name, priority
);
}
else
{
TextLog_Print(log, "[Priority: %d] ", priority);
}
if ( doNewLine )
TextLog_NewLine(log);
}
/* print a reference node */
static void LogReference(TextLog* log, ReferenceNode *refNode)
{
if(refNode)
{
if(refNode->system)
{
if(refNode->system->url)
TextLog_Print(log, "[Xref => %s%s]", refNode->system->url,
refNode->id);
else
TextLog_Print(log, "[Xref => %s %s]", refNode->system->name,
refNode->id);
}
else
{
TextLog_Print(log, "[Xref => %s]", refNode->id);
}
}
return;
}
void EventTrace_Log (const Packet* p, OptTreeNode* otn, int action)
{
int i;
const char* acts = (action < RULE_TYPE__MAX) ? rule_type[action] : "ERROR";
if ( !tlog )
return;
TextLog_Print(tlog,
"\nEvt=%u, Gid=%u, Sid=%u, Rev=%u, Act=%s\n",
event_id, otn->sigInfo.generator,
otn->sigInfo.id, otn->sigInfo.rev, acts
);
TextLog_Print(tlog,
"Pkt=%lu, Sec=%u.%6u, Len=%u, Cap=%u\n",
pc.total_from_daq, p->pkth->ts.tv_sec, p->pkth->ts.tv_usec,
p->pkth->pktlen, p->pkth->caplen
);
TextLog_Print(tlog,
"Pkt Bits: Flags=0x%X, PP=0x%X, PPR=0x%X, Proto=0x%X"
", Err=0x%X\n",
p->packet_flags, p->preprocessor_bits, p->preproc_reassembly_pkt_bits,
(unsigned)p->proto_bits, (unsigned)p->error_flags
);
TextLog_Print(tlog,
"Pkt Cnts: Dsz=%u, Alt=%u, Uri=0x%X\n",
(unsigned)p->dsize, (unsigned)p->alt_dsize, http_mask
);
TextLog_Print(tlog, "Detect: DoeFlags=0x%X, DetectFlags=0x%X, DetBuf=%u, B64=%u\n",
doe_buf_flags, detect_flags, DetectBuffer.len, base64_decode_size
);
LogBuffer("Decode", DecodeBuffer.data, DecodeBuffer.len);
LogBuffer("Detect", DetectBuffer.data, DetectBuffer.len);
LogBuffer("FileData", file_data_ptr.data, file_data_ptr.len);
LogBuffer("Base64", base64_decode_buf, base64_decode_size);
if(mime_present)
LogBuffer("Mime", file_data_ptr.data, file_data_ptr.len);
for ( i = 0; i < HTTP_BUFFER_MAX; i++ )
{
const HttpBuffer* hb = GetHttpBuffer(i);
if ( !hb )
continue;
TextLog_Print(tlog, "%s[%u] = 0x%X\n",
http_buffer_name[i], hb->length, hb->encode_type);
LogBuffer(http_buffer_name[i], hb->buf, hb->length);
}
nEvents++;
}
static void LogNetData (TextLog* log, const u_char* data, const int len)
{
const u_char* pb = data;
const u_char* end = data + len;
int offset = 0;
char conv[] = "0123456789ABCDEF"; /* xlation lookup table */
if ( !len )
{
TextLog_NewLine(log);
return;
}
if ( !data )
{
TextLog_Print(log, "Got NULL ptr in LogNetData()\n");
return;
}
if ( len > IP_MAXPACKET )
{
if (BcLogVerbose())
{
TextLog_Print(
log, "Got bogus buffer length (%d) for LogNetData, "
"defaulting to %d bytes!\n", len, BYTES_PER_FRAME
);
}
end = data + BYTES_PER_FRAME;
}
/* loop thru the whole buffer */
while ( pb < end )
{
int i = 0;
if (BcVerboseByteDump())
{
TextLog_Print(log, "0x%04X: ", offset);
offset += BYTES_PER_FRAME;
}
/* process one frame */
/* first print the binary as ascii hex */
for (i = 0; i < BYTES_PER_FRAME && pb+i < end; i++)
{
char b = pb[i];
TextLog_Putc(log, conv[(b & 0xFF) >> 4]);
TextLog_Putc(log, conv[(b & 0xFF) & 0x0F]);
TextLog_Putc(log, ' ');
}
/* print ' ' past end of packet and before ascii */
TextLog_Puts(log, pad3+(3*i));
/* then print the actual ascii chars */
/* or a '.' for control chars */
for (i = 0; i < BYTES_PER_FRAME && pb+i < end; i++)
{
char b = pb[i];
if ( b > 0x1F && b < 0x7F)
TextLog_Putc(log, (char)(b & 0xFF));
else
TextLog_Putc(log, '.');
}
pb += BYTES_PER_FRAME;
TextLog_NewLine(log);
}
TextLog_NewLine(log);
}
static void LogMPLSHeader(TextLog* log, Packet* p)
{
TextLog_Print(log,"label:0x%05X exp:0x%X bos:0x%X ttl:0x%X\n",
p->mplsHdr.label, p->mplsHdr.exp, p->mplsHdr.bos, p->mplsHdr.ttl);
}
/*--------------------------------------------------------------------
* Function: LogWifiHeader(TextLog* )
*
* Purpose: Print the packet 802.11 header to the given TextLog
*
* Arguments: log => pointer to TextLog to print to
*
* Returns: void function
*--------------------------------------------------------------------
*/
static void LogWifiHeader(TextLog* log, Packet * p)
{
/* This assumes we are printing a data packet, could be changed
to print other types as well */
const u_char *da = NULL, *sa = NULL, *bssid = NULL, *ra = NULL,
*ta = NULL;
/* per table 4, IEEE802.11 section 7.2.2 */
if ((p->wifih->frame_control & WLAN_FLAG_TODS) &&
(p->wifih->frame_control & WLAN_FLAG_FROMDS)) {
ra = p->wifih->addr1;
ta = p->wifih->addr2;
da = p->wifih->addr3;
sa = p->wifih->addr4;
}
else if (p->wifih->frame_control & WLAN_FLAG_TODS) {
bssid = p->wifih->addr1;
sa = p->wifih->addr2;
da = p->wifih->addr3;
}
else if (p->wifih->frame_control & WLAN_FLAG_FROMDS) {
da = p->wifih->addr1;
bssid = p->wifih->addr2;
sa = p->wifih->addr3;
}
else {
da = p->wifih->addr1;
sa = p->wifih->addr2;
bssid = p->wifih->addr3;
}
/* DO this switch to provide additional info on the type */
switch(p->wifih->frame_control & 0x00ff)
{
case WLAN_TYPE_MGMT_BEACON:
TextLog_Puts(log, "Beacon ");
break;
/* management frames */
case WLAN_TYPE_MGMT_ASREQ:
TextLog_Puts(log, "Assoc. Req. ");
break;
case WLAN_TYPE_MGMT_ASRES:
TextLog_Puts(log, "Assoc. Resp. ");
break;
case WLAN_TYPE_MGMT_REREQ:
TextLog_Puts(log, "Reassoc. Req. ");
break;
case WLAN_TYPE_MGMT_RERES:
TextLog_Puts(log, "Reassoc. Resp. ");
break;
case WLAN_TYPE_MGMT_PRREQ:
TextLog_Puts(log, "Probe Req. ");
break;
case WLAN_TYPE_MGMT_PRRES:
TextLog_Puts(log, "Probe Resp. ");
break;
case WLAN_TYPE_MGMT_ATIM:
TextLog_Puts(log, "ATIM ");
break;
case WLAN_TYPE_MGMT_DIS:
TextLog_Puts(log, "Dissassoc. ");
break;
case WLAN_TYPE_MGMT_AUTH:
TextLog_Puts(log, "Authent. ");
break;
case WLAN_TYPE_MGMT_DEAUTH:
TextLog_Puts(log, "Deauthent. ");
break;
/* Control frames */
case WLAN_TYPE_CONT_PS:
case WLAN_TYPE_CONT_RTS:
case WLAN_TYPE_CONT_CTS:
case WLAN_TYPE_CONT_ACK:
case WLAN_TYPE_CONT_CFE:
case WLAN_TYPE_CONT_CFACK:
TextLog_Puts(log, "Control ");
break;
}
if (sa != NULL) {
TextLog_Print(log, "%X:%X:%X:%X:%X:%X -> ", sa[0],
sa[1], sa[2], sa[3], sa[4], sa[5]);
}
else if (ta != NULL) {
TextLog_Print(log, "ta: %X:%X:%X:%X:%X:%X da: ", ta[0],
ta[1], ta[2], ta[3], ta[4], ta[5]);
}
TextLog_Print(log, "%X:%X:%X:%X:%X:%X\n", da[0],
da[1], da[2], da[3], da[4], da[5]);
if (bssid != NULL)
{
TextLog_Print(log, "bssid: %X:%X:%X:%X:%X:%X", bssid[0],
bssid[1], bssid[2], bssid[3], bssid[4], bssid[5]);
}
if (ra != NULL) {
TextLog_Print(log, " ra: %X:%X:%X:%X:%X:%X", ra[0],
ra[1], ra[2], ra[3], ra[4], ra[5]);
}
TextLog_Puts(log, " Flags:");
if (p->wifih->frame_control & WLAN_FLAG_TODS) TextLog_Puts(log," ToDs");
if (p->wifih->frame_control & WLAN_FLAG_TODS) TextLog_Puts(log," FrDs");
if (p->wifih->frame_control & WLAN_FLAG_FRAG) TextLog_Puts(log," Frag");
if (p->wifih->frame_control & WLAN_FLAG_RETRY) TextLog_Puts(log," Re");
if (p->wifih->frame_control & WLAN_FLAG_PWRMGMT) TextLog_Puts(log," Pwr");
if (p->wifih->frame_control & WLAN_FLAG_MOREDAT) TextLog_Puts(log," MD");
if (p->wifih->frame_control & WLAN_FLAG_WEP) TextLog_Puts(log," Wep");
if (p->wifih->frame_control & WLAN_FLAG_ORDER) TextLog_Puts(log," Ord");
TextLog_NewLine(log);
}
/*--------------------------------------------------------------------
* Function: LogICMPHeader(TextLog* )
*
* Purpose: Print ICMP header
*
* Arguments: log => pointer to TextLog
*
* Returns: void function
*--------------------------------------------------------------------
*/
void LogICMPHeader(TextLog* log, Packet * p)
{
#ifdef SUP_IP6
/* 32 digits plus 7 colons and a NULL byte */
char buf[8*4 + 7 + 1];
#endif
if(p->icmph == NULL)
{
TextLog_Puts(log, "ICMP header truncated\n");
return;
}
TextLog_Print(log, "Type:%d Code:%d ", p->icmph->type, p->icmph->code);
switch(p->icmph->type)
{
case ICMP_ECHOREPLY:
TextLog_Print(log, "ID:%d Seq:%d ", ntohs(p->icmph->s_icmp_id),
ntohs(p->icmph->s_icmp_seq));
TextLog_Puts(log, "ECHO REPLY");
break;
case ICMP_DEST_UNREACH:
TextLog_Puts(log, "DESTINATION UNREACHABLE: ");
switch(p->icmph->code)
{
case ICMP_NET_UNREACH:
TextLog_Puts(log, "NET UNREACHABLE");
break;
case ICMP_HOST_UNREACH:
TextLog_Puts(log, "HOST UNREACHABLE");
break;
case ICMP_PROT_UNREACH:
TextLog_Puts(log, "PROTOCOL UNREACHABLE");
break;
case ICMP_PORT_UNREACH:
TextLog_Puts(log, "PORT UNREACHABLE");
break;
case ICMP_FRAG_NEEDED:
TextLog_Print(log, "FRAGMENTATION NEEDED, DF SET\n"
"NEXT LINK MTU: %u",
ntohs(p->icmph->s_icmp_nextmtu));
break;
case ICMP_SR_FAILED:
TextLog_Puts(log, "SOURCE ROUTE FAILED");
break;
case ICMP_NET_UNKNOWN:
TextLog_Puts(log, "NET UNKNOWN");
break;
case ICMP_HOST_UNKNOWN:
TextLog_Puts(log, "HOST UNKNOWN");
break;
case ICMP_HOST_ISOLATED:
TextLog_Puts(log, "HOST ISOLATED");
break;
case ICMP_PKT_FILTERED_NET:
TextLog_Puts(log, "ADMINISTRATIVELY PROHIBITED NETWORK FILTERED");
break;
case ICMP_PKT_FILTERED_HOST:
TextLog_Puts(log, "ADMINISTRATIVELY PROHIBITED HOST FILTERED");
break;
case ICMP_NET_UNR_TOS:
TextLog_Puts(log, "NET UNREACHABLE FOR TOS");
break;
case ICMP_HOST_UNR_TOS:
TextLog_Puts(log, "HOST UNREACHABLE FOR TOS");
break;
case ICMP_PKT_FILTERED:
TextLog_Puts(log, "ADMINISTRATIVELY PROHIBITED,\nPACKET FILTERED");
break;
case ICMP_PREC_VIOLATION:
TextLog_Puts(log, "PREC VIOLATION");
break;
case ICMP_PREC_CUTOFF:
TextLog_Puts(log, "PREC CUTOFF");
break;
default:
TextLog_Puts(log, "UNKNOWN");
break;
}
LogICMPEmbeddedIP(log, p);
break;
case ICMP_SOURCE_QUENCH:
TextLog_Puts(log, "SOURCE QUENCH");
LogICMPEmbeddedIP(log, p);
break;
case ICMP_REDIRECT:
TextLog_Puts(log, "REDIRECT");
switch(p->icmph->code)
{
case ICMP_REDIR_NET:
TextLog_Puts(log, " NET");
break;
case ICMP_REDIR_HOST:
TextLog_Puts(log, " HOST");
break;
case ICMP_REDIR_TOS_NET:
TextLog_Puts(log, " TOS NET");
break;
case ICMP_REDIR_TOS_HOST:
TextLog_Puts(log, " TOS HOST");
break;
}
#ifdef SUP_IP6
/* written this way since inet_ntoa was typedef'ed to use sfip_ntoa
* which requires sfip_t instead of inaddr's. This call to inet_ntoa
* is a rare case that doesn't use sfip_t's. */
// XXX-IPv6 NOT YET IMPLEMENTED - IPV6 addresses technically not supported - need to change ICMP
/* no inet_ntop in Windows */
sfip_raw_ntop(AF_INET, (const void *)(&p->icmph->s_icmp_gwaddr.s_addr),
buf, sizeof(buf));
TextLog_Print(log, " NEW GW: %s", buf);
#else
TextLog_Print(log, " NEW GW: %s", inet_ntoa(p->icmph->s_icmp_gwaddr));
#endif
LogICMPEmbeddedIP(log, p);
break;
case ICMP_ECHO:
TextLog_Print(log, "ID:%d Seq:%d ", ntohs(p->icmph->s_icmp_id),
ntohs(p->icmph->s_icmp_seq));
TextLog_Puts(log, "ECHO");
break;
case ICMP_ROUTER_ADVERTISE:
TextLog_Print(log, "ROUTER ADVERTISMENT: "
"Num addrs: %d Addr entry size: %d Lifetime: %u",
p->icmph->s_icmp_num_addrs, p->icmph->s_icmp_wpa,
ntohs(p->icmph->s_icmp_lifetime));
break;
case ICMP_ROUTER_SOLICIT:
TextLog_Puts(log, "ROUTER SOLICITATION");
break;
case ICMP_TIME_EXCEEDED:
TextLog_Puts(log, "TTL EXCEEDED");
switch(p->icmph->code)
{
case ICMP_TIMEOUT_TRANSIT:
TextLog_Puts(log, " IN TRANSIT");
break;
case ICMP_TIMEOUT_REASSY:
TextLog_Puts(log, " TIME EXCEEDED IN FRAG REASSEMBLY");
break;
}
LogICMPEmbeddedIP(log, p);
break;
case ICMP_PARAMETERPROB:
TextLog_Puts(log, "PARAMETER PROBLEM");
switch(p->icmph->code)
{
case ICMP_PARAM_BADIPHDR:
TextLog_Print(log, ": BAD IP HEADER BYTE %u",
p->icmph->s_icmp_pptr);
break;
case ICMP_PARAM_OPTMISSING:
TextLog_Puts(log, ": OPTION MISSING");
break;
case ICMP_PARAM_BAD_LENGTH:
TextLog_Puts(log, ": BAD LENGTH");
break;
}
LogICMPEmbeddedIP(log, p);
break;
case ICMP_TIMESTAMP:
TextLog_Print(log, "ID: %u Seq: %u TIMESTAMP REQUEST",
ntohs(p->icmph->s_icmp_id), ntohs(p->icmph->s_icmp_seq));
break;
case ICMP_TIMESTAMPREPLY:
TextLog_Print(log, "ID: %u Seq: %u TIMESTAMP REPLY:\n"
"Orig: %u Rtime: %u Ttime: %u",
ntohs(p->icmph->s_icmp_id), ntohs(p->icmph->s_icmp_seq),
p->icmph->s_icmp_otime, p->icmph->s_icmp_rtime,
p->icmph->s_icmp_ttime);
break;
case ICMP_INFO_REQUEST:
TextLog_Print(log, "ID: %u Seq: %u INFO REQUEST",
ntohs(p->icmph->s_icmp_id), ntohs(p->icmph->s_icmp_seq));
break;
case ICMP_INFO_REPLY:
TextLog_Print(log, "ID: %u Seq: %u INFO REPLY",
ntohs(p->icmph->s_icmp_id), ntohs(p->icmph->s_icmp_seq));
break;
case ICMP_ADDRESS:
TextLog_Print(log, "ID: %u Seq: %u ADDRESS REQUEST",
ntohs(p->icmph->s_icmp_id), ntohs(p->icmph->s_icmp_seq));
break;
case ICMP_ADDRESSREPLY:
TextLog_Print(log, "ID: %u Seq: %u ADDRESS REPLY: 0x%08X",
ntohs(p->icmph->s_icmp_id), ntohs(p->icmph->s_icmp_seq),
(u_int) ntohl(p->icmph->s_icmp_mask));
break;
default:
TextLog_Puts(log, "UNKNOWN");
break;
}
TextLog_NewLine(log);
}
/*--------------------------------------------------------------------
* Function: LogICMPEmbeddedIP(TextLog* , Packet *)
*
* Purpose: Prints the original/encapsulated IP header + 64 bits of the
* original IP payload in an ICMP packet
*
* Arguments: log => pointer to TextLog
* p => packet struct
*
* Returns: void function
*--------------------------------------------------------------------
*/
static void LogICMPEmbeddedIP(TextLog* log, Packet *p)
{
Packet op;
Packet *orig_p;
uint32_t orig_ip_hlen;
if (log == NULL || p == NULL)
return;
memset((char*)&op, 0, sizeof(op));
orig_p = &op;
orig_p->iph = p->orig_iph;
orig_p->tcph = p->orig_tcph;
orig_p->udph = p->orig_udph;
orig_p->sp = p->orig_sp;
orig_p->dp = p->orig_dp;
orig_p->icmph = p->orig_icmph;
#ifdef SUP_IP6
orig_p->iph_api = p->orig_iph_api;
orig_p->ip4h = p->orig_ip4h;
orig_p->ip6h = p->orig_ip6h;
orig_p->family = p->orig_family;
#endif
if(orig_p->iph != NULL)
{
TextLog_Print(log, "\n** ORIGINAL DATAGRAM DUMP:\n");
LogIPHeader(log, orig_p);
orig_ip_hlen = IP_HLEN(p->orig_iph) << 2;
switch(GET_IPH_PROTO(orig_p))
{
case IPPROTO_TCP:
if(orig_p->tcph != NULL)
TextLog_Print(log, "Seq: 0x%lX\n",
(u_long)ntohl(orig_p->tcph->th_seq));
break;
case IPPROTO_UDP:
if(orig_p->udph != NULL)
TextLog_Print(log, "Len: %d Csum: %d\n",
ntohs(orig_p->udph->uh_len) - UDP_HEADER_LEN,
ntohs(orig_p->udph->uh_chk));
break;
case IPPROTO_ICMP:
if(orig_p->icmph != NULL)
LogEmbeddedICMPHeader(log, orig_p->icmph);
break;
default:
TextLog_Print(log, "Protocol: 0x%X (unknown or "
"header truncated)", GET_IPH_PROTO(orig_p));
break;
} /* switch */
/* if more than 8 bytes of original IP payload sent */
if (p->dsize - orig_ip_hlen > 8)
{
TextLog_Print(log, "(%d more bytes of original packet)\n",
p->dsize - orig_ip_hlen - 8);
}
TextLog_Puts(log, "** END OF DUMP");
}
else
{
TextLog_Puts(log, "\nORIGINAL DATAGRAM TRUNCATED");
}
}
/*-------------------------------------------------------------------
* IP stuff cloned from log.c
*-------------------------------------------------------------------
*/
static void LogIpOptions(TextLog* log, Packet * p)
{
int i;
int j;
u_long init_offset;
u_long print_offset;
init_offset = TextLog_Tell(log);
if(!p->ip_option_count || p->ip_option_count > 40)
return;
TextLog_Print(log, "IP Options (%d) => ", p->ip_option_count);
for(i = 0; i < (int) p->ip_option_count; i++)
{
print_offset = TextLog_Tell(log);
if((print_offset - init_offset) > 60)
{
TextLog_Puts(log, "\nIP Options => ");
init_offset = TextLog_Tell(log);
}
switch(p->ip_options[i].code)
{
case IPOPT_RR:
TextLog_Puts(log, "RR ");
break;
case IPOPT_EOL:
TextLog_Puts(log, "EOL ");
break;
case IPOPT_NOP:
TextLog_Puts(log, "NOP ");
break;
case IPOPT_TS:
TextLog_Puts(log, "TS ");
break;
case IPOPT_ESEC:
TextLog_Puts(log, "ESEC ");
break;
case IPOPT_SECURITY:
TextLog_Puts(log, "SEC ");
break;
case IPOPT_LSRR:
case IPOPT_LSRR_E:
TextLog_Puts(log, "LSRR ");
break;
case IPOPT_SATID:
TextLog_Puts(log, "SID ");
break;
case IPOPT_SSRR:
TextLog_Puts(log, "SSRR ");
break;
case IPOPT_RTRALT:
TextLog_Puts(log, "RTRALT ");
break;
default:
TextLog_Print(log, "Opt %d: ", p->ip_options[i].code);
if(p->ip_options[i].len)
{
for(j = 0; j < p->ip_options[i].len; j++)
{
if (p->ip_options[i].data)
TextLog_Print(log, "%02X", p->ip_options[i].data[j]);
else
TextLog_Print(log, "%02X", 0);
if((j % 2) == 0)
TextLog_Putc(log, ' ');
}
}
break;
}
}
TextLog_NewLine(log);
}
/*--------------------------------------------------------------------
* Function: LogIPHeader(TextLog* )
*
* Purpose: Dump the IP header info to the given TextLog
*
* Arguments: log => TextLog to print to
*
* Returns: void function
*--------------------------------------------------------------------
*/
void LogIPHeader(TextLog* log, Packet * p)
{
if(!IPH_IS_VALID(p))
{
TextLog_Print(log, "IP header truncated\n");
return;
}
if(p->frag_flag)
{
/* just print the straight IP header */
TextLog_Puts(log, inet_ntoa(GET_SRC_ADDR(p)));
TextLog_Puts(log, " -> ");
TextLog_Puts(log, inet_ntoa(GET_DST_ADDR(p)));
}
else
{
if(GET_IPH_PROTO(p) != IPPROTO_TCP && GET_IPH_PROTO(p) != IPPROTO_UDP)
{
/* just print the straight IP header */
TextLog_Puts(log, inet_ntoa(GET_SRC_ADDR(p)));
TextLog_Puts(log, " -> ");
TextLog_Puts(log, inet_ntoa(GET_DST_ADDR(p)));
}
else
{
if (!BcObfuscate())
{
/* print the header complete with port information */
TextLog_Puts(log, inet_ntoa(GET_SRC_ADDR(p)));
TextLog_Print(log, ":%d -> ", p->sp);
TextLog_Puts(log, inet_ntoa(GET_DST_ADDR(p)));
TextLog_Print(log, ":%d", p->dp);
}
else
{
/* print the header complete with port information */
if(IS_IP4(p))
TextLog_Print(log, "xxx.xxx.xxx.xxx:%d -> xxx.xxx.xxx.xxx:%d", p->sp, p->dp);
else if(IS_IP6(p))
TextLog_Print(log, "x:x:x:x:x:x:x:x:%d -> x:x:x:x:x:x:x:x:%d", p->sp, p->dp);
}
}
}
if(!BcOutputDataLink())
{
TextLog_NewLine(log);
}
else
{
TextLog_Putc(log, ' ');
}
TextLog_Print(log, "%s TTL:%u TOS:0x%X ID:%u IpLen:%u DgmLen:%u",
protocol_names[GET_IPH_PROTO(p)],
GET_IPH_TTL(p),
GET_IPH_TOS(p),
IS_IP6(p) ? ntohl(GET_IPH_ID(p)) : ntohs((uint16_t)GET_IPH_ID(p)),
GET_IPH_HLEN(p) << 2,
GET_IP_DGMLEN(p));
/* print the reserved bit if it's set */
if((uint8_t)((ntohs(GET_IPH_OFF(p)) & 0x8000) >> 15) == 1)
TextLog_Puts(log, " RB");
/* printf more frags/don't frag bits */
if((uint8_t)((ntohs(GET_IPH_OFF(p)) & 0x4000) >> 14) == 1)
TextLog_Puts(log, " DF");
if((uint8_t)((ntohs(GET_IPH_OFF(p)) & 0x2000) >> 13) == 1)
TextLog_Puts(log, " MF");
TextLog_NewLine(log);
/* print IP options */
if(p->ip_option_count != 0)
{
LogIpOptions(log, p);
}
/* print fragment info if necessary */
if(p->frag_flag)
{
TextLog_Print(log, "Frag Offset: 0x%04X Frag Size: 0x%04X\n",
(p->frag_offset & 0x1FFF),
GET_IP_PAYLEN(p));
}
}
/*-------------------------------------------------------------------
* TCP stuff cloned from log.c
*-------------------------------------------------------------------
*/
static void LogTcpOptions(TextLog* log, Packet * p)
{
int i;
int j;
u_char tmp[5];
u_long init_offset;
u_long print_offset;
init_offset = TextLog_Tell(log);
TextLog_Print(log, "TCP Options (%d) => ", p->tcp_option_count);
if(p->tcp_option_count > 40 || !p->tcp_option_count)
return;
for(i = 0; i < (int) p->tcp_option_count; i++)
{
print_offset = TextLog_Tell(log);
/**
if((print_offset - init_offset) > 60)
{
TextLog_Puts(log, "\nTCP Options => ");
init_offset = TextLog_Tell(log);
}
**/
switch(p->tcp_options[i].code)
{
case TCPOPT_MAXSEG:
memset((char*)tmp, 0, sizeof(tmp));
TextLog_Puts(log, "MSS: ");
if (p->tcp_options[i].data)
memcpy(tmp, p->tcp_options[i].data, 2);
TextLog_Print(log, "%u ", EXTRACT_16BITS(tmp));
break;
case TCPOPT_EOL:
TextLog_Puts(log, "EOL ");
break;
case TCPOPT_NOP:
TextLog_Puts(log, "NOP ");
break;
case TCPOPT_WSCALE:
if (p->tcp_options[i].data)
TextLog_Print(log, "WS: %u ", p->tcp_options[i].data[0]);
else
TextLog_Print(log, "WS: %u ", 0);
break;
case TCPOPT_SACK:
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data && (p->tcp_options[i].len >= 2))
memcpy(tmp, p->tcp_options[i].data, 2);
TextLog_Print(log, "Sack: %u@", EXTRACT_16BITS(tmp));
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data && (p->tcp_options[i].len >= 4))
memcpy(tmp, (p->tcp_options[i].data) + 2, 2);
TextLog_Print(log, "%u ", EXTRACT_16BITS(tmp));
break;
case TCPOPT_SACKOK:
TextLog_Puts(log, "SackOK ");
break;
case TCPOPT_ECHO:
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data)
memcpy(tmp, p->tcp_options[i].data, 4);
TextLog_Print(log, "Echo: %u ", EXTRACT_32BITS(tmp));
break;
case TCPOPT_ECHOREPLY:
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data)
memcpy(tmp, p->tcp_options[i].data, 4);
TextLog_Print(log, "Echo Rep: %u ", EXTRACT_32BITS(tmp));
break;
case TCPOPT_TIMESTAMP:
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data)
memcpy(tmp, p->tcp_options[i].data, 4);
TextLog_Print(log, "TS: %u ", EXTRACT_32BITS(tmp));
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data)
memcpy(tmp, (p->tcp_options[i].data) + 4, 4);
TextLog_Print(log, "%u ", EXTRACT_32BITS(tmp));
break;
case TCPOPT_CC:
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data)
memcpy(tmp, p->tcp_options[i].data, 4);
TextLog_Print(log, "CC %u ", EXTRACT_32BITS(tmp));
break;
case TCPOPT_CCNEW:
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data)
memcpy(tmp, p->tcp_options[i].data, 4);
TextLog_Print(log, "CCNEW: %u ", EXTRACT_32BITS(tmp));
break;
case TCPOPT_CCECHO:
memset((char*)tmp, 0, sizeof(tmp));
if (p->tcp_options[i].data)
memcpy(tmp, p->tcp_options[i].data, 4);
TextLog_Print(log, "CCECHO: %u ", EXTRACT_32BITS(tmp));
break;
default:
if(p->tcp_options[i].len)
{
TextLog_Print(log, "Opt %d (%d): ", p->tcp_options[i].code,
(int) p->tcp_options[i].len);
for(j = 0; j < p->tcp_options[i].len; j++)
{
if (p->tcp_options[i].data)
TextLog_Print(log, "%02X", p->tcp_options[i].data[j]);
else
TextLog_Print(log, "%02X", 0);
if ((j + 1) % 2 == 0)
TextLog_Putc(log, ' ');
}
TextLog_Putc(log, ' ');
}
else
{
TextLog_Print(log, "Opt %d ", p->tcp_options[i].code);
}
break;
}
}
TextLog_NewLine(log);
}