/**
* \brief Convert IP packet to an IDMEF alert (RFC 4765).
* This function stores the alert SID (description and reference),
* the payload of the packet, and pre-processed data.
*
* \return 0 if ok
*/
static int PacketToData(Packet *p, PacketAlert *pa, idmef_alert_t *alert, AlertPreludeCtx *ctx)
{
SCEnter();
if ( ! p )
SCReturnInt(0);
AddIntData(alert, "snort_rule_sid", pa->s->id);
AddIntData(alert, "snort_rule_rev", pa->s->rev);
if (ctx->log_packet_header) {
if ( PKT_IS_IPV4(p) )
PacketToDataV4(p, pa, alert);
else if ( PKT_IS_IPV6(p) )
PacketToDataV6(p, pa, alert);
if ( PKT_IS_TCP(p) ) {
AddIntData(alert, "tcp_seq", ntohl(p->tcph->th_seq));
AddIntData(alert, "tcp_ack", ntohl(p->tcph->th_ack));
AddIntData(alert, "tcp_off", TCP_GET_RAW_OFFSET(p->tcph));
AddIntData(alert, "tcp_res", TCP_GET_RAW_X2(p->tcph));
AddIntData(alert, "tcp_flags", p->tcph->th_flags);
AddIntData(alert, "tcp_win", ntohs(p->tcph->th_win));
AddIntData(alert, "tcp_sum", ntohs(p->tcph->th_sum));
AddIntData(alert, "tcp_urp", ntohs(p->tcph->th_urp));
}
else if ( PKT_IS_UDP(p) ) {
AddIntData(alert, "udp_len", ntohs(p->udph->uh_len));
AddIntData(alert, "udp_sum", ntohs(p->udph->uh_sum));
}
else if ( PKT_IS_ICMPV4(p) ) {
AddIntData(alert, "icmp_type", p->icmpv4h->type);
AddIntData(alert, "icmp_code", p->icmpv4h->code);
AddIntData(alert, "icmp_sum", ntohs(p->icmpv4h->checksum));
}
}
if (ctx->log_packet_content)
AddByteData(alert, "payload", p->payload, p->payload_len);
SCReturnInt(0);
}
/**
* \brief Convert IP packet to an IDMEF alert (RFC 4765).
* This function stores the alert SID (description and reference),
* the payload of the packet, and pre-processed data.
*
* \return 0 if ok
*/
static int PacketToData(const Packet *p, const PacketAlert *pa, idmef_alert_t *alert, AlertPreludeCtx *ctx)
{
SCEnter();
if (unlikely(p == NULL))
SCReturnInt(0);
AddIntData(alert, "snort_rule_sid", pa->s->id);
AddIntData(alert, "snort_rule_rev", pa->s->rev);
if (ctx->log_packet_header) {
if ( PKT_IS_IPV4(p) )
PacketToDataV4(p, pa, alert);
else if ( PKT_IS_IPV6(p) )
PacketToDataV6(p, pa, alert);
if ( PKT_IS_TCP(p) ) {
AddIntData(alert, "tcp_seq", TCP_GET_SEQ(p));
AddIntData(alert, "tcp_ack", TCP_GET_ACK(p));
AddIntData(alert, "tcp_off", TCP_GET_OFFSET(p));
AddIntData(alert, "tcp_res", TCP_GET_X2(p));
AddIntData(alert, "tcp_flags", TCP_GET_FLAGS(p));
AddIntData(alert, "tcp_win", TCP_GET_WINDOW(p));
AddIntData(alert, "tcp_sum", TCP_GET_SUM(p));
AddIntData(alert, "tcp_urp", TCP_GET_URG_POINTER(p));
if (p->tcpvars.ts_val != 0) {
AddIntData(alert, "tcp_tsval", TCP_GET_TSVAL(p));
}
if (p->tcpvars.ts_ecr != 0) {
AddIntData(alert, "tcp_tsecr", TCP_GET_TSECR(p));
}
if (p->tcph != NULL) {
AddIntData(alert, "tcp_wscale", TCP_GET_WSCALE(p));
}
if (TCP_HAS_SACKOK(p)) {
AddIntData(alert, "tcp_sackok", TCP_GET_SACKOK(p));
}
if (TCP_HAS_SACK(p)) {
AddIntData(alert, "tcp_sack_cnt", TCP_GET_SACK_CNT(p));
}
AddIntData(alert, "tcp_hlen", TCP_GET_HLEN(p));
}
else if ( PKT_IS_UDP(p) ) {
AddIntData(alert, "udp_len", UDP_GET_LEN(p));
AddIntData(alert, "udp_sum", UDP_GET_SUM(p));
}
else if ( PKT_IS_ICMPV4(p) ) {
AddIntData(alert, "icmp_type", ICMPV4_GET_TYPE(p));
AddIntData(alert, "icmp_code", ICMPV4_GET_CODE(p));
AddIntData(alert, "icmp_sum", ICMPV4_GET_RAW_CSUM(p));
}
else if ( PKT_IS_ICMPV6(p) ) {
AddIntData(alert, "icmp_type", ICMPV6_GET_TYPE(p));
AddIntData(alert, "icmp_code", ICMPV6_GET_CODE(p));
AddIntData(alert, "icmp_csum", ICMPV6_GET_RAW_CSUM(p));
}
}
if (ctx->log_packet_content)
AddByteData(alert, "payload", p->payload, p->payload_len);
SCReturnInt(0);
}
