From cdc8744396470397dcbb9b50dc197526c4cb834c Mon Sep 17 00:00:00 2001 From: "/C=EU/ST=EU/CN=Pablo Neira Ayuso/emailAddress=pablo@netfilter.org" Date: Sun, 13 Jan 2008 17:17:11 +0000 Subject: Several tree reorganizations: - move l3extensions/ and extensions/ to src/deprecated/ - don't create submodules under /usr/lib/libnetfilter_conntrack/ anymore --- src/deprecated/extensions/Makefile.am | 14 ++ .../extensions/libnetfilter_conntrack_icmp.c | 90 +++++++++++++ .../extensions/libnetfilter_conntrack_sctp.c | 100 +++++++++++++++ .../extensions/libnetfilter_conntrack_tcp.c | 142 +++++++++++++++++++++ .../extensions/libnetfilter_conntrack_udp.c | 84 ++++++++++++ 5 files changed, 430 insertions(+) create mode 100644 src/deprecated/extensions/Makefile.am create mode 100644 src/deprecated/extensions/libnetfilter_conntrack_icmp.c create mode 100644 src/deprecated/extensions/libnetfilter_conntrack_sctp.c create mode 100644 src/deprecated/extensions/libnetfilter_conntrack_tcp.c create mode 100644 src/deprecated/extensions/libnetfilter_conntrack_udp.c (limited to 'src/deprecated/extensions') diff --git a/src/deprecated/extensions/Makefile.am b/src/deprecated/extensions/Makefile.am new file mode 100644 index 0000000..e44525b --- /dev/null +++ b/src/deprecated/extensions/Makefile.am @@ -0,0 +1,14 @@ +include $(top_srcdir)/Make_global.am + +AUTOMAKE_OPTIONS = no-dependencies foreign + +AM_CFLAGS=-fPIC -Wall +LIBS= @LIBNFCONNTRACK_LIBS@ + +noinst_LTLIBRARIES = libnfct_proto_tcp.la libnfct_proto_udp.la \ + libnfct_proto_icmp.la libnfct_proto_sctp.la + +libnfct_proto_tcp_la_SOURCES = libnetfilter_conntrack_tcp.c +libnfct_proto_udp_la_SOURCES = libnetfilter_conntrack_udp.c +libnfct_proto_icmp_la_SOURCES = libnetfilter_conntrack_icmp.c +libnfct_proto_sctp_la_SOURCES = libnetfilter_conntrack_sctp.c diff --git a/src/deprecated/extensions/libnetfilter_conntrack_icmp.c b/src/deprecated/extensions/libnetfilter_conntrack_icmp.c new file mode 100644 index 0000000..72a7eb0 --- /dev/null +++ b/src/deprecated/extensions/libnetfilter_conntrack_icmp.c @@ -0,0 +1,90 @@ +/* + * (C) 2005 by Pablo Neira Ayuso + * + * 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 +#include +#include +#include +#include /* For htons */ +#include +#include +#include +#include + +static void parse_proto(struct nfattr *cda[], struct nfct_tuple *tuple) +{ + if (cda[CTA_PROTO_ICMP_TYPE-1]) + tuple->l4dst.icmp.type = + *(u_int8_t *)NFA_DATA(cda[CTA_PROTO_ICMP_TYPE-1]); + + if (cda[CTA_PROTO_ICMP_CODE-1]) + tuple->l4dst.icmp.code = + *(u_int8_t *)NFA_DATA(cda[CTA_PROTO_ICMP_CODE-1]); + + if (cda[CTA_PROTO_ICMP_ID-1]) + tuple->l4src.icmp.id = + *(u_int16_t *)NFA_DATA(cda[CTA_PROTO_ICMP_ID-1]); +} + +static void build_tuple_proto(struct nfnlhdr *req, int size, + struct nfct_tuple *t) +{ + nfnl_addattr_l(&req->nlh, size, CTA_PROTO_ICMP_CODE, + &t->l4dst.icmp.code, sizeof(u_int8_t)); + nfnl_addattr_l(&req->nlh, size, CTA_PROTO_ICMP_TYPE, + &t->l4dst.icmp.type, sizeof(u_int8_t)); + nfnl_addattr_l(&req->nlh, size, CTA_PROTO_ICMP_ID, + &t->l4src.icmp.id, sizeof(u_int16_t)); +} + +static int print_proto(char *buf, struct nfct_tuple *t) +{ + /* The ID only makes sense some ICMP messages but we want to + * display the same output that /proc/net/ip_conntrack does */ + return (sprintf(buf, "type=%d code=%d id=%d ",t->l4dst.icmp.type, + t->l4dst.icmp.code, + ntohs(t->l4src.icmp.id))); +} + +static int compare(struct nfct_conntrack *ct1, + struct nfct_conntrack *ct2, + unsigned int flags) +{ + if (flags & ICMP_TYPE) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.type != + ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.type) + return 0; + if (flags & ICMP_CODE) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.code != + ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.icmp.code) + return 0; + if (flags & ICMP_ID) + if (ct1->tuple[NFCT_DIR_REPLY].l4src.icmp.id != + ct2->tuple[NFCT_DIR_REPLY].l4src.icmp.id) + return 0; + + return 1; +} + +static struct nfct_proto icmp = { + .name = "icmp", + .protonum = IPPROTO_ICMP, + .parse_proto = parse_proto, + .build_tuple_proto = build_tuple_proto, + .print_proto = print_proto, + .compare = compare, + .version = VERSION +}; + +static void __attribute__ ((constructor)) init(void); + +static void init(void) +{ + nfct_register_proto(&icmp); +} 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 + * + * 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 +#include +#include +#include +#include /* For htons */ +#include +#include +#include +#include + +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); +} diff --git a/src/deprecated/extensions/libnetfilter_conntrack_tcp.c b/src/deprecated/extensions/libnetfilter_conntrack_tcp.c new file mode 100644 index 0000000..9efdbb7 --- /dev/null +++ b/src/deprecated/extensions/libnetfilter_conntrack_tcp.c @@ -0,0 +1,142 @@ +/* + * (C) 2005 by Pablo Neira Ayuso + * + * 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 +#include +#include +#include +#include /* For htons */ +#include +#include +#include +#include + +static const char *states[] = { + "NONE", + "SYN_SENT", + "SYN_RECV", + "ESTABLISHED", + "FIN_WAIT", + "CLOSE_WAIT", + "LAST_ACK", + "TIME_WAIT", + "CLOSE", + "LISTEN" +}; + +static void parse_proto(struct nfattr *cda[], struct nfct_tuple *tuple) +{ + if (cda[CTA_PROTO_SRC_PORT-1]) + tuple->l4src.tcp.port = + *(u_int16_t *)NFA_DATA(cda[CTA_PROTO_SRC_PORT-1]); + if (cda[CTA_PROTO_DST_PORT-1]) + tuple->l4dst.tcp.port = + *(u_int16_t *)NFA_DATA(cda[CTA_PROTO_DST_PORT-1]); +} + +static void parse_protoinfo(struct nfattr *cda[], struct nfct_conntrack *ct) +{ + struct nfattr *tb[CTA_PROTOINFO_TCP_MAX]; + + /* + * Listen to me carefully: This is easy to trigger with events ;). + * The conntrack event messages don't always contain all the + * information about a conntrack, just those fields that have changed. + * So you can receive a message about a TCP connection with no bits + * talking about the private protocol information. + * + * --pablo 05/10/31 + */ + if (!cda[CTA_PROTOINFO_TCP-1]) + return; + + nfnl_parse_nested(tb,CTA_PROTOINFO_TCP_MAX, cda[CTA_PROTOINFO_TCP-1]); + + if (tb[CTA_PROTOINFO_TCP_STATE-1]) + ct->protoinfo.tcp.state = + *(u_int8_t *)NFA_DATA(tb[CTA_PROTOINFO_TCP_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.tcp.port, sizeof(u_int16_t)); + nfnl_addattr_l(&req->nlh, size, CTA_PROTO_DST_PORT, + &t->l4dst.tcp.port, sizeof(u_int16_t)); +} + +static void build_protoinfo(struct nfnlhdr *req, int size, + struct nfct_conntrack *ct) +{ + struct nfattr *nest_proto; + + nest_proto = nfnl_nest(&req->nlh, size, CTA_PROTOINFO_TCP); + nfnl_addattr_l(&req->nlh, size, CTA_PROTOINFO_TCP_STATE, + &ct->protoinfo.tcp.state, sizeof(u_int8_t)); + nfnl_nest_end(&req->nlh, nest_proto); +} + +static int print_protoinfo(char *buf, union nfct_protoinfo *protoinfo) +{ + return(sprintf(buf, "%s ", states[protoinfo->tcp.state])); +} + +static int print_proto(char *buf, struct nfct_tuple *tuple) +{ + return(sprintf(buf, "sport=%u dport=%u ", htons(tuple->l4src.tcp.port), + htons(tuple->l4dst.tcp.port))); +} + +static int compare(struct nfct_conntrack *ct1, + struct nfct_conntrack *ct2, + unsigned int flags) +{ + if (flags & TCP_ORIG_SPORT) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4src.tcp.port != + ct2->tuple[NFCT_DIR_ORIGINAL].l4src.tcp.port) + return 0; + if (flags & TCP_ORIG_DPORT) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.tcp.port != + ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.tcp.port) + return 0; + if (flags & TCP_REPL_SPORT) + if (ct1->tuple[NFCT_DIR_REPLY].l4src.tcp.port != + ct2->tuple[NFCT_DIR_REPLY].l4src.tcp.port) + return 0; + if (flags & TCP_REPL_DPORT) + if (ct1->tuple[NFCT_DIR_REPLY].l4dst.tcp.port != + ct2->tuple[NFCT_DIR_REPLY].l4dst.tcp.port) + return 0; + if (flags & TCP_STATE) + if (ct1->protoinfo.tcp.state != ct2->protoinfo.tcp.state) + return 0; + + return 1; +} + +static struct nfct_proto tcp = { + .name = "tcp", + .protonum = IPPROTO_TCP, + .parse_protoinfo = parse_protoinfo, + .parse_proto = parse_proto, + .build_tuple_proto = build_tuple_proto, + .build_protoinfo = build_protoinfo, + .print_protoinfo = print_protoinfo, + .print_proto = print_proto, + .compare = compare, + .version = VERSION +}; + +static void __attribute__ ((constructor)) init(void); + +static void init(void) +{ + nfct_register_proto(&tcp); +} diff --git a/src/deprecated/extensions/libnetfilter_conntrack_udp.c b/src/deprecated/extensions/libnetfilter_conntrack_udp.c new file mode 100644 index 0000000..c1d20c3 --- /dev/null +++ b/src/deprecated/extensions/libnetfilter_conntrack_udp.c @@ -0,0 +1,84 @@ +/* + * (C) 2005 by Pablo Neira Ayuso + * + * 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 +#include +#include +#include +#include /* For htons */ +#include +#include +#include +#include + +static void parse_proto(struct nfattr *cda[], struct nfct_tuple *tuple) +{ + if (cda[CTA_PROTO_SRC_PORT-1]) + tuple->l4src.udp.port = + *(u_int16_t *)NFA_DATA(cda[CTA_PROTO_SRC_PORT-1]); + if (cda[CTA_PROTO_DST_PORT-1]) + tuple->l4dst.udp.port = + *(u_int16_t *)NFA_DATA(cda[CTA_PROTO_DST_PORT-1]); +} + +static int print_proto(char *buf, struct nfct_tuple *tuple) +{ + return (sprintf(buf, "sport=%u dport=%u ", htons(tuple->l4src.udp.port), + htons(tuple->l4dst.udp.port))); +} + +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.udp.port, sizeof(u_int16_t)); + nfnl_addattr_l(&req->nlh, size, CTA_PROTO_DST_PORT, + &t->l4dst.udp.port, sizeof(u_int16_t)); +} + +static int compare(struct nfct_conntrack *ct1, + struct nfct_conntrack *ct2, + unsigned int flags) +{ + if (flags & UDP_ORIG_SPORT) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4src.udp.port != + ct2->tuple[NFCT_DIR_ORIGINAL].l4src.udp.port) + return 0; + if (flags & UDP_ORIG_DPORT) + if (ct1->tuple[NFCT_DIR_ORIGINAL].l4dst.udp.port != + ct2->tuple[NFCT_DIR_ORIGINAL].l4dst.udp.port) + return 0; + if (flags & UDP_REPL_SPORT) + if (ct1->tuple[NFCT_DIR_REPLY].l4src.udp.port != + ct2->tuple[NFCT_DIR_REPLY].l4src.udp.port) + return 0; + if (flags & UDP_REPL_DPORT) + if (ct1->tuple[NFCT_DIR_REPLY].l4dst.udp.port != + ct2->tuple[NFCT_DIR_REPLY].l4dst.udp.port) + return 0; + + return 1; +} + +static struct nfct_proto udp = { + .name = "udp", + .protonum = IPPROTO_UDP, + .build_tuple_proto = build_tuple_proto, + .parse_proto = parse_proto, + .print_proto = print_proto, + .compare = compare, + .version = VERSION, +}; + +static void __attribute__ ((constructor)) init(void); + +static void init(void) +{ + nfct_register_proto(&udp); +} -- cgit v1.2.3