diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/socket_wrapper/socket_wrapper.c | 90 |
1 files changed, 87 insertions, 3 deletions
diff --git a/lib/socket_wrapper/socket_wrapper.c b/lib/socket_wrapper/socket_wrapper.c index 4412c403d6..9527bb5e0e 100644 --- a/lib/socket_wrapper/socket_wrapper.c +++ b/lib/socket_wrapper/socket_wrapper.c @@ -659,8 +659,19 @@ union swrap_packet_ip { uint32_t dest_addr; } v4; #define SWRAP_PACKET_IP_V4_SIZE 20 + struct { + uint8_t ver_prio; + uint8_t flow_label_high; + uint16_t flow_label_low; + uint16_t payload_length; + uint8_t next_header; + uint8_t hop_limit; + uint8_t src_addr[16]; + uint8_t dest_addr[16]; + } v6; +#define SWRAP_PACKET_IP_V6_SIZE 40 }; -#define SWRAP_PACKET_IP_SIZE 20 +#define SWRAP_PACKET_IP_SIZE 40 union swrap_packet_payload { struct { @@ -689,6 +700,13 @@ union swrap_packet_payload { uint32_t unused; } icmp4; #define SWRAP_PACKET_PAYLOAD_ICMP4_SIZE 8 + struct { + uint8_t type; + uint8_t code; + uint16_t checksum; + uint32_t unused; + } icmp6; +#define SWRAP_PACKET_PAYLOAD_ICMP6_SIZE 8 }; #define SWRAP_PACKET_PAYLOAD_SIZE 20 @@ -730,6 +748,9 @@ static const char *socket_wrapper_pcap_file(void) if (sizeof(i.v4) != SWRAP_PACKET_IP_V4_SIZE) { return NULL; } + if (sizeof(i.v6) != SWRAP_PACKET_IP_V6_SIZE) { + return NULL; + } if (sizeof(p) != SWRAP_PACKET_PAYLOAD_SIZE) { return NULL; } @@ -742,6 +763,9 @@ static const char *socket_wrapper_pcap_file(void) if (sizeof(p.icmp4) != SWRAP_PACKET_PAYLOAD_ICMP4_SIZE) { return NULL; } + if (sizeof(p.icmp6) != SWRAP_PACKET_PAYLOAD_ICMP6_SIZE) { + return NULL; + } s = getenv("SOCKET_WRAPPER_PCAP_FILE"); if (s == NULL) { @@ -781,6 +805,10 @@ static uint8_t *swrap_packet_init(struct timeval *tval, uint8_t protocol = 0, icmp_protocol = 0; const struct sockaddr_in *src_in; const struct sockaddr_in *dest_in; +#ifdef HAVE_IPV6 + const struct sockaddr_in6 *src_in6; + const struct sockaddr_in6 *dest_in6; +#endif uint16_t src_port; uint16_t dest_port; @@ -792,6 +820,15 @@ static uint8_t *swrap_packet_init(struct timeval *tval, dest_port = dest_in->sin_port; ip_hdr_len = sizeof(ip->v4); break; +#ifdef HAVE_IPV6 + case AF_INET6: + src_in6 = (const struct sockaddr_in6 *)src; + dest_in6 = (const struct sockaddr_in6 *)dest; + src_port = src_in6->sin6_port; + dest_port = dest_in6->sin6_port; + ip_hdr_len = sizeof(ip->v6); + break; +#endif default: return NULL; } @@ -815,11 +852,21 @@ static uint8_t *swrap_packet_init(struct timeval *tval, if (unreachable) { icmp_protocol = protocol; - protocol = 0x01; /* ICMP */ + switch (src->sa_family) { + case AF_INET: + protocol = 0x01; /* ICMPv4 */ + icmp_hdr_len = ip_hdr_len + sizeof(pay->icmp4); + break; +#ifdef HAVE_IPV6 + case AF_INET6: + protocol = 0x3A; /* ICMPv6 */ + icmp_hdr_len = ip_hdr_len + sizeof(pay->icmp6); + break; +#endif + } if (wire_len > 64 ) { icmp_truncate_len = wire_len - 64; } - icmp_hdr_len = ip_hdr_len + sizeof(pay->icmp4); wire_hdr_len += icmp_hdr_len; wire_len += icmp_hdr_len; } @@ -858,6 +905,18 @@ static uint8_t *swrap_packet_init(struct timeval *tval, ip->v4.dest_addr = dest_in->sin_addr.s_addr; buf += SWRAP_PACKET_IP_V4_SIZE; break; +#ifdef HAVE_IPV6 + case AF_INET6: + ip->v6.ver_prio = 0x60; /* version 4 and 5 * 32 bit words */ + ip->v6.flow_label_high = 0x00; + ip->v6.flow_label_low = 0x0000; + ip->v6.payload_length = htons(wire_len - icmp_truncate_len);//TODO + ip->v6.next_header = protocol; + memcpy(ip->v6.src_addr, src_in6->sin6_addr.s6_addr, 16); + memcpy(ip->v6.dest_addr, dest_in6->sin6_addr.s6_addr, 16); + buf += SWRAP_PACKET_IP_V6_SIZE; + break; +#endif } if (unreachable) { @@ -888,6 +947,29 @@ static uint8_t *swrap_packet_init(struct timeval *tval, src_port = dest_in->sin_port; dest_port = src_in->sin_port; break; +#ifdef HAVE_IPV6 + case AF_INET6: + pay->icmp6.type = 0x01; /* destination unreachable */ + pay->icmp6.code = 0x03; /* address unreachable */ + pay->icmp6.checksum = htons(0x0000); + pay->icmp6.unused = htonl(0x00000000); + buf += SWRAP_PACKET_PAYLOAD_ICMP6_SIZE; + + /* set the ip header in the ICMP payload */ + ip = (union swrap_packet_ip *)buf; + ip->v6.ver_prio = 0x60; /* version 4 and 5 * 32 bit words */ + ip->v6.flow_label_high = 0x00; + ip->v6.flow_label_low = 0x0000; + ip->v6.payload_length = htons(wire_len - icmp_truncate_len);//TODO + ip->v6.next_header = protocol; + memcpy(ip->v6.src_addr, dest_in6->sin6_addr.s6_addr, 16); + memcpy(ip->v6.dest_addr, src_in6->sin6_addr.s6_addr, 16); + buf += SWRAP_PACKET_IP_V6_SIZE; + + src_port = dest_in6->sin6_port; + dest_port = src_in6->sin6_port; + break; +#endif } } @@ -973,6 +1055,8 @@ static uint8_t *swrap_marshall_packet(struct socket_info *si, switch (si->family) { case AF_INET: break; + case AF_INET6: + break; default: return NULL; } |