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Diffstat (limited to 'src/deprecated/extensions/libnetfilter_conntrack_sctp.c')
-rw-r--r--src/deprecated/extensions/libnetfilter_conntrack_sctp.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/src/deprecated/extensions/libnetfilter_conntrack_sctp.c b/src/deprecated/extensions/libnetfilter_conntrack_sctp.c
new file mode 100644
index 0000000..3785c2e
--- /dev/null
+++ b/src/deprecated/extensions/libnetfilter_conntrack_sctp.c
@@ -0,0 +1,100 @@
+/*
+ * (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 <libnetfilter_conntrack/linux_nfnetlink_conntrack.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack_extensions.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack_sctp.h>
+
+static 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]);
+}
+
+static 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]);
+*/
+}
+
+static void build_tuple_proto(struct nfnlhdr *req, int size,
+ struct nfct_tuple *t)
+{
+ nfnl_addattr_l(&req->nlh, size, CTA_PROTO_SRC_PORT,
+ &t->l4src.sctp.port, sizeof(u_int16_t));
+ nfnl_addattr_l(&req->nlh, size, CTA_PROTO_DST_PORT,
+ &t->l4dst.sctp.port, sizeof(u_int16_t));
+}
+
+static int print_protoinfo(char *buf, union nfct_protoinfo *protoinfo)
+{
+/* fprintf(stdout, "%s ", states[protoinfo->sctp.state]); */
+ return 0;
+}
+
+static 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 int compare(struct nfct_conntrack *ct1,
+ struct nfct_conntrack *ct2,
+ unsigned int flags)
+{
+ if (flags & SCTP_ORIG_SPORT)
+ if (ct1->tuple[NFCT_DIR_ORIGINAL].l4src.sctp.port !=
+ ct2->tuple[NFCT_DIR_ORIGINAL].l4src.sctp.port)
+ return 0;
+ if (flags & SCTP_ORIG_DPORT)
+ if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.sctp.port !=
+ ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.sctp.port)
+ return 0;
+ if (flags & SCTP_REPL_SPORT)
+ if (ct1->tuple[NFCT_DIR_REPLY].l4src.sctp.port !=
+ ct2->tuple[NFCT_DIR_REPLY].l4src.sctp.port)
+ return 0;
+ if (flags & SCTP_REPL_DPORT)
+ if (ct1->tuple[NFCT_DIR_REPLY].l4dst.sctp.port !=
+ ct2->tuple[NFCT_DIR_REPLY].l4dst.sctp.port)
+ return 0;
+
+ return 1;
+}
+
+static struct nfct_proto sctp = {
+ .name = "sctp",
+ .protonum = IPPROTO_SCTP,
+ .parse_proto = parse_proto,
+ .parse_protoinfo = parse_protoinfo,
+ .build_tuple_proto = build_tuple_proto,
+ .print_proto = print_proto,
+ .print_protoinfo = print_protoinfo,
+ .compare = compare,
+ .version = VERSION
+};
+
+static void __attribute__ ((constructor)) init(void);
+
+static void init(void)
+{
+ nfct_register_proto(&sctp);
+}