diff options
| -rw-r--r-- | package/iptables/patches/04-multiport_v1.patch | 221 | ||||
| -rw-r--r-- | target/linux/generic-2.4/patches/619-nefilter_multiport_backport.patch | 242 |
2 files changed, 463 insertions, 0 deletions
diff --git a/package/iptables/patches/04-multiport_v1.patch b/package/iptables/patches/04-multiport_v1.patch new file mode 100644 index 0000000000..90b5144c75 --- /dev/null +++ b/package/iptables/patches/04-multiport_v1.patch @@ -0,0 +1,221 @@ +diff -urN iptables.old/extensions/libipt_multiport.c iptables.dev/extensions/libipt_multiport.c +--- iptables.old/extensions/libipt_multiport.c 2005-02-19 20:19:17.000000000 +0100 ++++ iptables.dev/extensions/libipt_multiport.c 2006-02-04 05:46:12.154127750 +0100 +@@ -8,24 +8,6 @@ + /* To ensure that iptables compiles with an old kernel */ + #include "../include/linux/netfilter_ipv4/ipt_multiport.h" + +-/* Function which prints out usage message. */ +-static void +-help(void) +-{ +- printf( +-"multiport v%s options:\n" +-" --source-ports port[,port,port...]\n" +-" --sports ...\n" +-" match source port(s)\n" +-" --destination-ports port[,port,port...]\n" +-" --dports ...\n" +-" match destination port(s)\n" +-" --ports port[,port,port]\n" +-" match both source and destination port(s)\n" +-" NOTE: this kernel does not support port ranges in multiport.\n", +-IPTABLES_VERSION); +-} +- + static void + help_v1(void) + { +@@ -75,26 +57,6 @@ + "invalid port/service `%s' specified", port); + } + +-static unsigned int +-parse_multi_ports(const char *portstring, u_int16_t *ports, const char *proto) +-{ +- char *buffer, *cp, *next; +- unsigned int i; +- +- buffer = strdup(portstring); +- if (!buffer) exit_error(OTHER_PROBLEM, "strdup failed"); +- +- for (cp=buffer, i=0; cp && i<IPT_MULTI_PORTS; cp=next,i++) +- { +- next=strchr(cp, ','); +- if (next) *next++='\0'; +- ports[i] = parse_port(cp, proto); +- } +- if (cp) exit_error(PARAMETER_PROBLEM, "too many ports specified"); +- free(buffer); +- return i; +-} +- + static void + parse_multi_ports_v1(const char *portstring, + struct ipt_multiport_v1 *multiinfo, +@@ -160,58 +122,6 @@ + "multiport only works with TCP or UDP"); + } + +-/* Function which parses command options; returns true if it +- ate an option */ +-static int +-parse(int c, char **argv, int invert, unsigned int *flags, +- const struct ipt_entry *entry, +- unsigned int *nfcache, +- struct ipt_entry_match **match) +-{ +- const char *proto; +- struct ipt_multiport *multiinfo +- = (struct ipt_multiport *)(*match)->data; +- +- switch (c) { +- case '1': +- check_inverse(argv[optind-1], &invert, &optind, 0); +- proto = check_proto(entry); +- multiinfo->count = parse_multi_ports(argv[optind-1], +- multiinfo->ports, proto); +- multiinfo->flags = IPT_MULTIPORT_SOURCE; +- break; +- +- case '2': +- check_inverse(argv[optind-1], &invert, &optind, 0); +- proto = check_proto(entry); +- multiinfo->count = parse_multi_ports(argv[optind-1], +- multiinfo->ports, proto); +- multiinfo->flags = IPT_MULTIPORT_DESTINATION; +- break; +- +- case '3': +- check_inverse(argv[optind-1], &invert, &optind, 0); +- proto = check_proto(entry); +- multiinfo->count = parse_multi_ports(argv[optind-1], +- multiinfo->ports, proto); +- multiinfo->flags = IPT_MULTIPORT_EITHER; +- break; +- +- default: +- return 0; +- } +- +- if (invert) +- exit_error(PARAMETER_PROBLEM, +- "multiport does not support invert"); +- +- if (*flags) +- exit_error(PARAMETER_PROBLEM, +- "multiport can only have one option"); +- *flags = 1; +- return 1; +-} +- + static int + parse_v1(int c, char **argv, int invert, unsigned int *flags, + const struct ipt_entry *entry, +@@ -289,43 +199,6 @@ + printf("%s", service); + } + +-/* Prints out the matchinfo. */ +-static void +-print(const struct ipt_ip *ip, +- const struct ipt_entry_match *match, +- int numeric) +-{ +- const struct ipt_multiport *multiinfo +- = (const struct ipt_multiport *)match->data; +- unsigned int i; +- +- printf("multiport "); +- +- switch (multiinfo->flags) { +- case IPT_MULTIPORT_SOURCE: +- printf("sports "); +- break; +- +- case IPT_MULTIPORT_DESTINATION: +- printf("dports "); +- break; +- +- case IPT_MULTIPORT_EITHER: +- printf("ports "); +- break; +- +- default: +- printf("ERROR "); +- break; +- } +- +- for (i=0; i < multiinfo->count; i++) { +- printf("%s", i ? "," : ""); +- print_port(multiinfo->ports[i], ip->proto, numeric); +- } +- printf(" "); +-} +- + static void + print_v1(const struct ipt_ip *ip, + const struct ipt_entry_match *match, +@@ -369,34 +242,6 @@ + printf(" "); + } + +-/* Saves the union ipt_matchinfo in parsable form to stdout. */ +-static void save(const struct ipt_ip *ip, const struct ipt_entry_match *match) +-{ +- const struct ipt_multiport *multiinfo +- = (const struct ipt_multiport *)match->data; +- unsigned int i; +- +- switch (multiinfo->flags) { +- case IPT_MULTIPORT_SOURCE: +- printf("--sports "); +- break; +- +- case IPT_MULTIPORT_DESTINATION: +- printf("--dports "); +- break; +- +- case IPT_MULTIPORT_EITHER: +- printf("--ports "); +- break; +- } +- +- for (i=0; i < multiinfo->count; i++) { +- printf("%s", i ? "," : ""); +- print_port(multiinfo->ports[i], ip->proto, 1); +- } +- printf(" "); +-} +- + static void save_v1(const struct ipt_ip *ip, + const struct ipt_entry_match *match) + { +@@ -432,19 +277,20 @@ + printf(" "); + } + ++ + static struct iptables_match multiport = { + .next = NULL, + .name = "multiport", +- .revision = 0, + .version = IPTABLES_VERSION, +- .size = IPT_ALIGN(sizeof(struct ipt_multiport)), +- .userspacesize = IPT_ALIGN(sizeof(struct ipt_multiport)), +- .help = &help, ++ .revision = 0, ++ .size = IPT_ALIGN(sizeof(struct ipt_multiport_v1)), ++ .userspacesize = IPT_ALIGN(sizeof(struct ipt_multiport_v1)), ++ .help = &help_v1, + .init = &init, +- .parse = &parse, ++ .parse = &parse_v1, + .final_check = &final_check, +- .print = &print, +- .save = &save, ++ .print = &print_v1, ++ .save = &save_v1, + .extra_opts = opts + }; + diff --git a/target/linux/generic-2.4/patches/619-nefilter_multiport_backport.patch b/target/linux/generic-2.4/patches/619-nefilter_multiport_backport.patch new file mode 100644 index 0000000000..de6ca1c7cb --- /dev/null +++ b/target/linux/generic-2.4/patches/619-nefilter_multiport_backport.patch @@ -0,0 +1,242 @@ +diff -urN linux.old/include/linux/netfilter_ipv4/ipt_multiport.h linux.dev/include/linux/netfilter_ipv4/ipt_multiport.h +--- linux.old/include/linux/netfilter_ipv4/ipt_multiport.h 2000-12-11 22:31:30.000000000 +0100 ++++ linux.dev/include/linux/netfilter_ipv4/ipt_multiport.h 2006-02-04 05:05:51.928476750 +0100 +@@ -18,4 +18,13 @@ + u_int8_t count; /* Number of ports */ + u_int16_t ports[IPT_MULTI_PORTS]; /* Ports */ + }; ++ ++struct ipt_multiport_v1 ++{ ++ u_int8_t flags; /* Type of comparison */ ++ u_int8_t count; /* Number of ports */ ++ u_int16_t ports[IPT_MULTI_PORTS]; /* Ports */ ++ u_int8_t pflags[IPT_MULTI_PORTS]; /* Port flags */ ++ u_int8_t invert; /* Invert flag */ ++}; + #endif /*_IPT_MULTIPORT_H*/ +diff -urN linux.old/net/ipv4/netfilter/ipt_multiport.c linux.dev/net/ipv4/netfilter/ipt_multiport.c +--- linux.old/net/ipv4/netfilter/ipt_multiport.c 2003-06-13 16:51:39.000000000 +0200 ++++ linux.dev/net/ipv4/netfilter/ipt_multiport.c 2006-02-04 05:05:03.701462750 +0100 +@@ -1,5 +1,14 @@ + /* Kernel module to match one of a list of TCP/UDP ports: ports are in + the same place so we can treat them as equal. */ ++ ++/* (C) 1999-2001 Paul `Rusty' Russell ++ * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ */ ++ + #include <linux/module.h> + #include <linux/types.h> + #include <linux/udp.h> +@@ -8,6 +17,10 @@ + #include <linux/netfilter_ipv4/ipt_multiport.h> + #include <linux/netfilter_ipv4/ip_tables.h> + ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>"); ++MODULE_DESCRIPTION("iptables multiple port match module"); ++ + #if 0 + #define duprintf(format, args...) printk(format , ## args) + #else +@@ -33,34 +46,109 @@ + return 0; + } + ++/* Returns 1 if the port is matched by the test, 0 otherwise. */ ++static inline int ++ports_match_v1(const struct ipt_multiport_v1 *minfo, ++ u_int16_t src, u_int16_t dst) ++{ ++ unsigned int i; ++ u_int16_t s, e; ++ ++ for (i=0; i < minfo->count; i++) { ++ s = minfo->ports[i]; ++ ++ if (minfo->pflags[i]) { ++ /* range port matching */ ++ e = minfo->ports[++i]; ++ duprintf("src or dst matches with %d-%d?\n", s, e); ++ ++ if (minfo->flags == IPT_MULTIPORT_SOURCE ++ && src >= s && src <= e) ++ return 1 ^ minfo->invert; ++ if (minfo->flags == IPT_MULTIPORT_DESTINATION ++ && dst >= s && dst <= e) ++ return 1 ^ minfo->invert; ++ if (minfo->flags == IPT_MULTIPORT_EITHER ++ && ((dst >= s && dst <= e) ++ || (src >= s && src <= e))) ++ return 1 ^ minfo->invert; ++ } else { ++ /* exact port matching */ ++ duprintf("src or dst matches with %d?\n", s); ++ ++ if (minfo->flags == IPT_MULTIPORT_SOURCE ++ && src == s) ++ return 1 ^ minfo->invert; ++ if (minfo->flags == IPT_MULTIPORT_DESTINATION ++ && dst == s) ++ return 1 ^ minfo->invert; ++ if (minfo->flags == IPT_MULTIPORT_EITHER ++ && (src == s || dst == s)) ++ return 1 ^ minfo->invert; ++ } ++ } ++ ++ return minfo->invert; ++} ++ + static int + match(const struct sk_buff *skb, + const struct net_device *in, + const struct net_device *out, + const void *matchinfo, + int offset, +- const void *hdr, +- u_int16_t datalen, + int *hotdrop) + { +- const struct udphdr *udp = hdr; ++ u16 _ports[2], *pptr; + const struct ipt_multiport *multiinfo = matchinfo; + +- /* Must be big enough to read ports. */ +- if (offset == 0 && datalen < sizeof(struct udphdr)) { ++ if (offset) ++ return 0; ++ ++ pptr = skb_header_pointer(skb, skb->nh.iph->ihl * 4, ++ sizeof(_ports), _ports); ++ if (pptr == NULL) { + /* We've been asked to examine this packet, and we +- can't. Hence, no choice but to drop. */ +- duprintf("ipt_multiport:" +- " Dropping evil offset=0 tinygram.\n"); +- *hotdrop = 1; +- return 0; ++ * can't. Hence, no choice but to drop. ++ */ ++ duprintf("ipt_multiport:" ++ " Dropping evil offset=0 tinygram.\n"); ++ *hotdrop = 1; ++ return 0; + } + +- /* Must not be a fragment. */ +- return !offset +- && ports_match(multiinfo->ports, +- multiinfo->flags, multiinfo->count, +- ntohs(udp->source), ntohs(udp->dest)); ++ return ports_match(multiinfo->ports, ++ multiinfo->flags, multiinfo->count, ++ ntohs(pptr[0]), ntohs(pptr[1])); ++} ++ ++static int ++match_v1(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, ++ const void *matchinfo, ++ int offset, ++ int *hotdrop) ++{ ++ u16 _ports[2], *pptr; ++ const struct ipt_multiport_v1 *multiinfo = matchinfo; ++ ++ if (offset) ++ return 0; ++ ++ pptr = skb_header_pointer(skb, skb->nh.iph->ihl * 4, ++ sizeof(_ports), _ports); ++ if (pptr == NULL) { ++ /* We've been asked to examine this packet, and we ++ * can't. Hence, no choice but to drop. ++ */ ++ duprintf("ipt_multiport:" ++ " Dropping evil offset=0 tinygram.\n"); ++ *hotdrop = 1; ++ return 0; ++ } ++ ++ return ports_match_v1(multiinfo, ntohs(pptr[0]), ntohs(pptr[1])); + } + + /* Called when user tries to insert an entry of this type. */ +@@ -71,34 +159,54 @@ + unsigned int matchsize, + unsigned int hook_mask) + { +- const struct ipt_multiport *multiinfo = matchinfo; +- +- if (matchsize != IPT_ALIGN(sizeof(struct ipt_multiport))) +- return 0; ++ return (matchsize == IPT_ALIGN(sizeof(struct ipt_multiport))); ++} + +- /* Must specify proto == TCP/UDP, no unknown flags or bad count */ +- return (ip->proto == IPPROTO_TCP || ip->proto == IPPROTO_UDP) +- && !(ip->invflags & IPT_INV_PROTO) +- && matchsize == IPT_ALIGN(sizeof(struct ipt_multiport)) +- && (multiinfo->flags == IPT_MULTIPORT_SOURCE +- || multiinfo->flags == IPT_MULTIPORT_DESTINATION +- || multiinfo->flags == IPT_MULTIPORT_EITHER) +- && multiinfo->count <= IPT_MULTI_PORTS; ++static int ++checkentry_v1(const char *tablename, ++ const struct ipt_ip *ip, ++ void *matchinfo, ++ unsigned int matchsize, ++ unsigned int hook_mask) ++{ ++ return (matchsize == IPT_ALIGN(sizeof(struct ipt_multiport_v1))); + } + +-static struct ipt_match multiport_match +-= { { NULL, NULL }, "multiport", &match, &checkentry, NULL, THIS_MODULE }; ++static struct ipt_match multiport_match = { ++ .name = "multiport", ++ .revision = 0, ++ .match = &match, ++ .checkentry = &checkentry, ++ .me = THIS_MODULE, ++}; ++ ++static struct ipt_match multiport_match_v1 = { ++ .name = "multiport", ++ .revision = 1, ++ .match = &match_v1, ++ .checkentry = &checkentry_v1, ++ .me = THIS_MODULE, ++}; + + static int __init init(void) + { +- return ipt_register_match(&multiport_match); ++ int err; ++ ++ err = ipt_register_match(&multiport_match); ++ if (!err) { ++ err = ipt_register_match(&multiport_match_v1); ++ if (err) ++ ipt_unregister_match(&multiport_match); ++ } ++ ++ return err; + } + + static void __exit fini(void) + { + ipt_unregister_match(&multiport_match); ++ ipt_unregister_match(&multiport_match_v1); + } + + module_init(init); + module_exit(fini); +-MODULE_LICENSE("GPL"); |