diff options
Diffstat (limited to 'extensions/libct_proto_tcp.c')
| -rw-r--r-- | extensions/libct_proto_tcp.c | 92 |
1 files changed, 19 insertions, 73 deletions
diff --git a/extensions/libct_proto_tcp.c b/extensions/libct_proto_tcp.c index 0246758..d854c7f 100644 --- a/extensions/libct_proto_tcp.c +++ b/extensions/libct_proto_tcp.c @@ -93,84 +93,46 @@ static int parse_options(char c, unsigned int *flags) { int i; + u_int16_t port; switch(c) { case '1': - if (!optarg) - break; - - nfct_set_attr_u16(ct, - ATTR_ORIG_PORT_SRC, - htons(atoi(optarg))); - + port = htons(atoi(optarg)); + nfct_set_attr_u16(ct, ATTR_ORIG_PORT_SRC, port); nfct_set_attr_u8(ct, ATTR_ORIG_L4PROTO, IPPROTO_TCP); - *flags |= TCP_ORIG_SPORT; break; case '2': - if (!optarg) - break; - - nfct_set_attr_u16(ct, - ATTR_ORIG_PORT_DST, - htons(atoi(optarg))); - + port = htons(atoi(optarg)); + nfct_set_attr_u16(ct, ATTR_ORIG_PORT_DST, port); nfct_set_attr_u8(ct, ATTR_ORIG_L4PROTO, IPPROTO_TCP); - *flags |= TCP_ORIG_DPORT; break; case '3': - if (!optarg) - break; - - nfct_set_attr_u16(ct, - ATTR_REPL_PORT_SRC, - htons(atoi(optarg))); - + port = htons(atoi(optarg)); + nfct_set_attr_u16(ct, ATTR_REPL_PORT_SRC, port); nfct_set_attr_u8(ct, ATTR_REPL_L4PROTO, IPPROTO_TCP); - *flags |= TCP_REPL_SPORT; break; case '4': - if (!optarg) - break; - - nfct_set_attr_u16(ct, - ATTR_REPL_PORT_DST, - htons(atoi(optarg))); - + port = htons(atoi(optarg)); + nfct_set_attr_u16(ct, ATTR_REPL_PORT_DST, port); nfct_set_attr_u8(ct, ATTR_REPL_L4PROTO, IPPROTO_TCP); - *flags |= TCP_REPL_DPORT; break; case '5': - if (!optarg) - break; - - nfct_set_attr_u16(mask, - ATTR_ORIG_PORT_SRC, - htons(atoi(optarg))); - + port = htons(atoi(optarg)); + nfct_set_attr_u16(mask, ATTR_ORIG_PORT_SRC, port); nfct_set_attr_u8(mask, ATTR_ORIG_L4PROTO, IPPROTO_TCP); - *flags |= TCP_MASK_SPORT; break; case '6': - if (!optarg) - break; - - nfct_set_attr_u16(mask, - ATTR_ORIG_PORT_DST, - htons(atoi(optarg))); - + port = htons(atoi(optarg)); + nfct_set_attr_u16(mask, ATTR_ORIG_PORT_DST, port); nfct_set_attr_u8(mask, ATTR_ORIG_L4PROTO, IPPROTO_TCP); - *flags |= TCP_MASK_DPORT; break; case '7': - if (!optarg) - break; - for (i=0; i<10; i++) { if (strcmp(optarg, states[i]) == 0) { nfct_set_attr_u8(ct, @@ -185,31 +147,15 @@ static int parse_options(char c, *flags |= TCP_STATE; break; case '8': - if (!optarg) - break; - - nfct_set_attr_u16(exptuple, - ATTR_ORIG_PORT_SRC, - htons(atoi(optarg))); - - nfct_set_attr_u8(exptuple, - ATTR_ORIG_L4PROTO, - IPPROTO_TCP); - + port = htons(atoi(optarg)); + nfct_set_attr_u16(exptuple, ATTR_ORIG_PORT_SRC, port); + nfct_set_attr_u8(exptuple, ATTR_ORIG_L4PROTO, port); *flags |= TCP_EXPTUPLE_SPORT; break; case '9': - if (!optarg) - break; - - nfct_set_attr_u16(exptuple, - ATTR_ORIG_PORT_DST, - htons(atoi(optarg))); - - nfct_set_attr_u8(exptuple, - ATTR_ORIG_L4PROTO, - IPPROTO_TCP); - + port = htons(atoi(optarg)); + nfct_set_attr_u16(exptuple, ATTR_ORIG_PORT_DST, port); + nfct_set_attr_u8(exptuple, ATTR_ORIG_L4PROTO, port); *flags |= TCP_EXPTUPLE_DPORT; break; } |