aiden
/
suricata
mirror of https://github.com/OISF/suricata
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Rename checksums to level3_comp_csum and level4_comp_csum.

Browse Source 
This will also sharing even more memory in the Packet_ structure.
pull/635/merge
Ken Steele 12 years ago committed by Victor Julien
parent 3dceca70ee
commit f16b339fc4
8 changed files with 81 additions and 82 deletions
Show Stats Download Patch File Download Diff File

2
src/decode-icmpv4.h
Unescape Escape View File

@ -200,7 +200,7 @@ typedef struct ICMPV4Vars_
} ICMPV4Vars;
#define CLEAR_ICMPV4_PACKET(p) do { \
(p)->comp_csum = -1; \
(p)->level4_comp_csum = -1; \
(p)->icmpv4vars.id = 0; \
(p)->icmpv4vars.seq = 0; \
(p)->icmpv4vars.mtu = 0; \

2
src/decode-icmpv6.h
Unescape Escape View File

@ -152,7 +152,7 @@ typedef struct ICMPV6Vars_ {
#define CLEAR_ICMPV6_PACKET(p) do { \
(p)->comp_csum = -1; \
(p)->level4_comp_csum = -1; \
(p)->icmpv6vars.id = 0; \
(p)->icmpv6vars.seq = 0; \
(p)->icmpv6vars.mtu = 0; \

2
src/decode-ipv4.h
Unescape Escape View File

@ -150,7 +150,7 @@ typedef struct IPV4Hdr_
#define CLEAR_IPV4_PACKET(p) do { \
(p)->ip4h = NULL; \
(p)->ip4vars.comp_csum = 0; \
(p)->level3_comp_csum = -1; \
(p)->ip4vars.ip_src_u32 = 0; \
(p)->ip4vars.ip_dst_u32 = 0; \
(p)->ip4vars.ip_opt_cnt = 0; \

2
src/decode-tcp.h
Unescape Escape View File

@ -153,7 +153,7 @@ typedef struct TCPVars_
#define CLEAR_TCP_PACKET(p) { \
(p)->tcph = NULL; \
(p)->comp_csum = -1; \
(p)->level4_comp_csum = -1; \
(p)->tcpvars.tcp_opt_cnt = 0; \
(p)->tcpvars.ts = NULL; \
(p)->tcpvars.sack = NULL; \

2
src/decode-udp.h
Unescape Escape View File

@ -50,7 +50,7 @@ typedef struct UDPVars_
#define CLEAR_UDP_PACKET(p) do { \
(p)->udph = NULL; \
(p)->comp_csum = -1; \
(p)->level4_comp_csum = -1; \
} while (0)
void DecodeUDPV4RegisterTests(void);

8
src/decode.h
Unescape Escape View File

@ -427,8 +427,10 @@ typedef struct Packet_
/* header pointers */
EthernetHdr *ethh;
/* Checksum for IP packets. */
int32_t level3_comp_csum;
/* Check sum for TCP, UDP or ICMP packets */
int32_t comp_csum;
int32_t level4_comp_csum;
IPV4Hdr *ip4h;
IPV4Vars ip4vars;
@ -612,8 +614,8 @@ typedef struct DecodeThreadVars_
* \brief reset these to -1(indicates that the packet is fresh from the queue)
*/
#define PACKET_RESET_CHECKSUMS(p) do { \
(p)->ip4vars.comp_csum = -1; \
(p)->comp_csum = -1; \
(p)->level3_comp_csum = -1; \
(p)->level4_comp_csum = -1; \
} while (0)
/**

86
src/detect-csum.c
Unescape Escape View File

@ -241,13 +241,13 @@ int DetectIPV4CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
return cd->valid;
}
if (p->ip4vars.comp_csum == -1)
p->ip4vars.comp_csum = IPV4CalculateChecksum((uint16_t *)p->ip4h,
IPV4_GET_HLEN(p));
if (p->level3_comp_csum == -1)
p->level3_comp_csum = IPV4CalculateChecksum((uint16_t *)p->ip4h,
IPV4_GET_HLEN(p));
if (p->ip4vars.comp_csum == p->ip4h->ip_csum && cd->valid == 1)
if (p->level3_comp_csum == p->ip4h->ip_csum && cd->valid == 1)
return 1;
else if (p->ip4vars.comp_csum != p->ip4h->ip_csum && cd->valid == 0)
else if (p->level3_comp_csum != p->ip4h->ip_csum && cd->valid == 0)
return 1;
else
return 0;
@ -335,14 +335,14 @@ int DetectTCPV4CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
return cd->valid;
}
if (p->comp_csum == -1)
p->comp_csum = TCPCalculateChecksum(p->ip4h->s_ip_addrs,
(uint16_t *)p->tcph,
(p->payload_len + TCP_GET_HLEN(p)));
if (p->level4_comp_csum == -1)
p->level4_comp_csum = TCPCalculateChecksum(p->ip4h->s_ip_addrs,
(uint16_t *)p->tcph,
(p->payload_len + TCP_GET_HLEN(p)));
if (p->comp_csum == p->tcph->th_sum && cd->valid == 1)
if (p->level4_comp_csum == p->tcph->th_sum && cd->valid == 1)
return 1;
else if (p->comp_csum != p->tcph->th_sum && cd->valid == 0)
else if (p->level4_comp_csum != p->tcph->th_sum && cd->valid == 0)
return 1;
else
return 0;
@ -430,14 +430,14 @@ int DetectTCPV6CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
return cd->valid;
}
if (p->comp_csum == -1)
p->comp_csum = TCPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
(uint16_t *)p->tcph,
(p->payload_len + TCP_GET_HLEN(p)));
if (p->level4_comp_csum == -1)
p->level4_comp_csum = TCPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
(uint16_t *)p->tcph,
(p->payload_len + TCP_GET_HLEN(p)));
if (p->comp_csum == p->tcph->th_sum && cd->valid == 1)
if (p->level4_comp_csum == p->tcph->th_sum && cd->valid == 1)
return 1;
else if (p->comp_csum != p->tcph->th_sum && cd->valid == 0)
else if (p->level4_comp_csum != p->tcph->th_sum && cd->valid == 0)
return 1;
else
return 0;
@ -525,15 +525,15 @@ int DetectUDPV4CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
return cd->valid;
}
if (p->comp_csum == -1)
p->comp_csum = UDPV4CalculateChecksum(p->ip4h->s_ip_addrs,
(uint16_t *)p->udph,
(p->payload_len +
UDP_HEADER_LEN) );
if (p->level4_comp_csum == -1)
p->level4_comp_csum = UDPV4CalculateChecksum(p->ip4h->s_ip_addrs,
(uint16_t *)p->udph,
(p->payload_len +
UDP_HEADER_LEN) );
if (p->comp_csum == p->udph->uh_sum && cd->valid == 1)
if (p->level4_comp_csum == p->udph->uh_sum && cd->valid == 1)
return 1;
else if (p->comp_csum != p->udph->uh_sum && cd->valid == 0)
else if (p->level4_comp_csum != p->udph->uh_sum && cd->valid == 0)
return 1;
else
return 0;
@ -621,15 +621,15 @@ int DetectUDPV6CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
return cd->valid;
}
if (p->comp_csum == -1)
p->comp_csum = UDPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
(uint16_t *)p->udph,
(p->payload_len +
UDP_HEADER_LEN) );
if (p->level4_comp_csum == -1)
p->level4_comp_csum = UDPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
(uint16_t *)p->udph,
(p->payload_len +
UDP_HEADER_LEN) );
if (p->comp_csum == p->udph->uh_sum && cd->valid == 1)
if (p->level4_comp_csum == p->udph->uh_sum && cd->valid == 1)
return 1;
else if (p->comp_csum != p->udph->uh_sum && cd->valid == 0)
else if (p->level4_comp_csum != p->udph->uh_sum && cd->valid == 0)
return 1;
else
return 0;
@ -717,14 +717,14 @@ int DetectICMPV4CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
return cd->valid;
}
if (p->comp_csum == -1)
p->comp_csum = ICMPV4CalculateChecksum((uint16_t *)p->icmpv4h,
ntohs(IPV4_GET_RAW_IPLEN(p->ip4h)) -
IPV4_GET_RAW_HLEN(p->ip4h) * 4);
if (p->level4_comp_csum == -1)
p->level4_comp_csum = ICMPV4CalculateChecksum((uint16_t *)p->icmpv4h,
ntohs(IPV4_GET_RAW_IPLEN(p->ip4h)) -
IPV4_GET_RAW_HLEN(p->ip4h) * 4);
if (p->comp_csum == p->icmpv4h->checksum && cd->valid == 1)
if (p->level4_comp_csum == p->icmpv4h->checksum && cd->valid == 1)
return 1;
else if (p->comp_csum != p->icmpv4h->checksum && cd->valid == 0)
else if (p->level4_comp_csum != p->icmpv4h->checksum && cd->valid == 0)
return 1;
else
return 0;
@ -814,14 +814,14 @@ int DetectICMPV6CsumMatch(ThreadVars *t, DetectEngineThreadCtx *det_ctx,
return cd->valid;
}
if (p->comp_csum == -1)
p->comp_csum = ICMPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
(uint16_t *)p->icmpv6h,
GET_PKT_LEN(p) - ((uint8_t *)p->icmpv6h - GET_PKT_DATA(p)));
if (p->level4_comp_csum == -1)
p->level4_comp_csum = ICMPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
(uint16_t *)p->icmpv6h,
GET_PKT_LEN(p) - ((uint8_t *)p->icmpv6h - GET_PKT_DATA(p)));
if (p->comp_csum == p->icmpv6h->csum && cd->valid == 1)
if (p->level4_comp_csum == p->icmpv6h->csum && cd->valid == 1)
return 1;
else if (p->comp_csum != p->icmpv6h->csum && cd->valid == 0)
else if (p->level4_comp_csum != p->icmpv6h->csum && cd->valid == 0)
return 1;
else
return 0;

59
src/stream-tcp.c
Unescape Escape View File

@ -4410,21 +4410,21 @@ static inline int StreamTcpValidateChecksum(Packet *p)
if (p->flags & PKT_IGNORE_CHECKSUM)
return ret;
if (p->comp_csum == -1) {
if (p->level4_comp_csum == -1) {
if (PKT_IS_IPV4(p)) {
p->comp_csum = TCPCalculateChecksum(p->ip4h->s_ip_addrs,
(uint16_t *)p->tcph,
(p->payload_len +
TCP_GET_HLEN(p)));
p->level4_comp_csum = TCPCalculateChecksum(p->ip4h->s_ip_addrs,
(uint16_t *)p->tcph,
(p->payload_len +
TCP_GET_HLEN(p)));
} else if (PKT_IS_IPV6(p)) {
p->comp_csum = TCPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
(uint16_t *)p->tcph,
(p->payload_len +
TCP_GET_HLEN(p)));
p->level4_comp_csum = TCPV6CalculateChecksum(p->ip6h->s_ip6_addrs,
(uint16_t *)p->tcph,
(p->payload_len +
TCP_GET_HLEN(p)));
}
}
if (p->comp_csum != p->tcph->th_sum) {
if (p->level4_comp_csum != p->tcph->th_sum) {
ret = 0;
SCLogDebug("Checksum of received packet %p is invalid",p);
if (p->livedev) {
@ -8375,7 +8375,7 @@ static int StreamTcpTest29(void)
p.payload = packet;
p.ip4h = &ipv4h;
p.tcpc = tcpc;
p.tcpc.comp_csum = -1;
p.tcpc.level4_comp_csum = -1;
tcpvars.hlen = 20;
p.tcpvars = tcpvars;
ssn.state = TCP_ESTABLISHED;
@ -8398,9 +8398,6 @@ static int StreamTcpTest29(void)
ssn.server.last_ack = 119197101;
ssn.server.ra_base_seq = 119197101;
tcph.th_flags = TH_PUSH | TH_ACK;
p.flowflags = FLOW_PKT_TOSERVER;
p.tcph->th_seq = htonl(11);
@ -8408,9 +8405,9 @@ static int StreamTcpTest29(void)
p.payload_len = 4;
p.ip4h->ip_src = addr1;
p.tcph->th_sum = TCPCalculateChecksum((uint16_t *)&(p.ip4h->ip_src),
(uint16_t *)p.tcph,
(p.payload_len +
p.tcpvars.hlen) );
(uint16_t *)p.tcph,
(p.payload_len +
p.tcpvars.hlen) );
if (StreamTcp(&tv, &p, (void *)&stt, NULL, NULL) != TM_ECODE_OK) {
printf("failed in segment reassmebling\n");
@ -8519,7 +8516,7 @@ static int StreamTcpTest30(void)
p.payload = payload;
p.ip4h = &ipv4h;
p.tcpc = tcpc;
p.tcpc.comp_csum = -1;
p.tcpc.level4_comp_csum = -1;
p.tcpvars = tcpvars;
ssn.state = TCP_ESTABLISHED;
addr.s_addr = inet_addr("10.1.3.53");
@ -8657,7 +8654,7 @@ static int StreamTcpTest31(void)
p.tcph = &tcph;
p.ip4h = &ipv4h;
p.tcpc = tcpc;
p.tcpc.comp_csum = -1;
p.tcpc.level4_comp_csum = -1;
p.tcpvars = tcpvars;
p.tcpvars.ts = &tcpopt;
addr.s_addr = inet_addr("10.1.3.53");
@ -8699,11 +8696,11 @@ static int StreamTcpTest31(void)
p.payload_len = 0;
p.ip4h->ip_src = addr1;
p.tcpc.ts1 = 10;
p.tcpc.comp_csum = -1;
p.tcpc.level4_comp_csum = -1;
p.tcph->th_sum = TCPCalculateChecksum((uint16_t *)&(p.ip4h->ip_src),
(uint16_t *)p.tcph,
(p.payload_len +
p.tcpvars.hlen) );
(uint16_t *)p.tcph,
(p.payload_len +
p.tcpvars.hlen) );
if (StreamTcp(&tv, &p, (void *)&stt, NULL, NULL) != TM_ECODE_OK) {
printf("failed in segment reassmebling\n");
@ -8719,11 +8716,11 @@ static int StreamTcpTest31(void)
p.payload_len = 0;
p.tcpc.ts1 = 10;
p.ip4h->ip_src = addr;
p.tcpc.comp_csum = -1;
p.tcpc.level4_comp_csum = -1;
p.tcph->th_sum = TCPCalculateChecksum((uint16_t *)&(p.ip4h->ip_src),
(uint16_t *)p.tcph,
(p.payload_len +
p.tcpvars.hlen) );
(uint16_t *)p.tcph,
(p.payload_len +
p.tcpvars.hlen) );
if (StreamTcp(&tv, &p, (void *)&stt, NULL, NULL) != TM_ECODE_OK) {
printf("failed in segment reassmebling\n");
@ -8738,11 +8735,11 @@ static int StreamTcpTest31(void)
p.payload_len = 0;
p.tcpc.ts1 = 10;
p.ip4h->ip_src = addr1;
p.tcpc.comp_csum = -1;
p.tcpc.level4_comp_csum = -1;
p.tcph->th_sum = TCPCalculateChecksum((uint16_t *)&(p.ip4h->ip_src),
(uint16_t *)p.tcph,
(p.payload_len +
p.tcpvars.hlen) );
(uint16_t *)p.tcph,
(p.payload_len +
p.tcpvars.hlen) );
if (StreamTcp(&tv, &p, (void *)&stt, NULL, NULL) != TM_ECODE_OK) {
printf("failed in segment reassmebling\n");

Write Preview
Loading…
Cancel
Save