diff options
Diffstat (limited to 'extensions/libnetfilter_conntrack_sctp.c')
-rw-r--r-- | extensions/libnetfilter_conntrack_sctp.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/extensions/libnetfilter_conntrack_sctp.c b/extensions/libnetfilter_conntrack_sctp.c new file mode 100644 index 0000000..a42a6c8 --- /dev/null +++ b/extensions/libnetfilter_conntrack_sctp.c @@ -0,0 +1,69 @@ +/* + * (C) 2005 by Pablo Neira Ayuso <pablo@netfilter.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ +#include <stdio.h> +#include <getopt.h> +#include <stdlib.h> +#include <string.h> +#include <netinet/in.h> /* For htons */ +#include <linux/netfilter/nfnetlink_conntrack.h> +#include <libnetfilter_conntrack/libnetfilter_conntrack.h> + +void parse_proto(struct nfattr *cda[], struct nfct_tuple *tuple) +{ + if (cda[CTA_PROTO_SRC_PORT-1]) + tuple->l4src.sctp.port = + *(u_int16_t *)NFA_DATA(cda[CTA_PROTO_SRC_PORT-1]); + if (cda[CTA_PROTO_DST_PORT-1]) + tuple->l4dst.sctp.port = + *(u_int16_t *)NFA_DATA(cda[CTA_PROTO_DST_PORT-1]); +} + +void parse_protoinfo(struct nfattr *cda[], struct nfct_conntrack *ct) +{ +/* if (cda[CTA_PROTOINFO_SCTP_STATE-1]) + ct->protoinfo.sctp.state = + *(u_int8_t *)NFA_DATA(cda[CTA_PROTOINFO_SCTP_STATE-1]); +*/ +} + +int print_protoinfo(char *buf, union nfct_protoinfo *protoinfo) +{ +/* fprintf(stdout, "%s ", states[protoinfo->sctp.state]); */ + return 0; +} + +int print_proto(char *buf, struct nfct_tuple *tuple) +{ + return(sprintf(buf, "sport=%u dport=%u ", htons(tuple->l4src.sctp.port), + htons(tuple->l4dst.sctp.port))); +} + +static struct nfct_proto sctp = { + .name = "sctp", + .protonum = IPPROTO_SCTP, + .parse_proto = parse_proto, + .parse_protoinfo = parse_protoinfo, + .print_proto = print_proto, + .print_protoinfo = print_protoinfo, + .version = LIBNETFILTER_CONNTRACK_VERSION +}; + +void __attribute__ ((constructor)) init(void); +void __attribute__ ((destructor)) fini(void); + +void init(void) +{ + nfct_register_proto(&sctp); +} + +void fini(void) +{ + nfct_unregister_proto(&sctp); +} |