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drop iptables 1.3.8 and switch to to 1.4.3.2, refresh layer7 kernel patches and add packages for libiptc + libxtables

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SVN-Revision: 15501
This commit is contained in:
Jo-Philipp Wich 2009-04-29 23:31:23 +00:00
parent 85ee4153f3
commit 2515392870
9 changed files with 170 additions and 1134 deletions
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59
package/iptables/Makefile
View file

@ -10,18 +10,9 @@ include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=iptables
ifeq ($(CONFIG_LINUX_2_4),y)
PKG_VERSION:=1.3.8
PKG_RELEASE:=4
PKG_MD5SUM:=0a9209f928002e5eee9cdff8fef4d4b3
MAKE_TARGETS:=experimental install-experimental install-devel
endif
ifeq ($(CONFIG_LINUX_2_6),y)
PKG_VERSION:=1.4.3.2
PKG_RELEASE:=1
PKG_MD5SUM:=545698693b636cfc844aafc6729fd48a
endif
PKG_VERSION:=1.4.3.2
PKG_RELEASE:=1
PKG_MD5SUM:=545698693b636cfc844aafc6729fd48a
PKG_VERSION?=<IPTABLES_VERSION>
@ -40,10 +31,27 @@ ifeq ($(DUMP),)
STAMP_CONFIGURED:=$(strip $(STAMP_CONFIGURED))_$(shell grep 'NETFILTER' $(LINUX_DIR)/.config | md5s)
endif
define Package/libiptc
SECTION:=libs
CATEGORY:=Libraries
URL:=http://netfilter.org/
TITLE:=IPv4/IPv6 firewall - shared libiptc library
endef
define Package/libxtables
SECTION:=libs
CATEGORY:=Libraries
URL:=http://netfilter.org/
TITLE:=IPv4/IPv6 firewall - shared xtables library
endef
define Package/iptables/Default
SECTION:=net
CATEGORY:=Base system
URL:=http://netfilter.org/
DEPENDS:=+libiptc +libxtables
endef
define Package/iptables/Module
@ -106,7 +114,7 @@ define Package/iptables-mod-filter/description
endef
define Package/iptables-mod-imq
$(call Package/iptables/Module, +kmod-ipt-imq @!LINUX_2_6_27)
$(call Package/iptables/Module, +kmod-ipt-imq)
TITLE:=IMQ support
endef
@ -241,15 +249,6 @@ define Build/Prepare
$(call Build/Prepare/Default)
endef
ifeq ($(KERNEL),2.4)
define Build/Configure
chmod a+x $(PKG_BUILD_DIR)/extensions/.*-test*
rm -f $(PKG_BUILD_DIR)/.configured*
$(MAKE) -C $(PKG_BUILD_DIR) \
clean
endef
endif
TARGET_CPPFLAGS := -I$(PKG_BUILD_DIR)/include $(TARGET_CPPFLAGS)
TARGET_CFLAGS += $(FPIC)
CONFIGURE_ARGS += \
@ -287,6 +286,18 @@ define Package/iptables/install
)
endef
define Package/libiptc/install
$(INSTALL_DIR) $(1)/usr/lib
$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/lib/libiptc.so.0 $(1)/usr/lib/
endef
define Package/libxtables/install
$(INSTALL_DIR) $(1)/usr/lib
$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/lib/libxtables.so.2 $(1)/usr/lib/
endef
define Package/iptables-utils/install
$(INSTALL_DIR) $(1)/usr/sbin
$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/iptables-{save,restore} $(1)/usr/sbin/
@ -324,6 +335,10 @@ L7_INSTALL:=\
$(INSTALL_DIR) $$(1)/etc/l7-protocols; \
$(CP) files/l7/*.pat $$(1)/etc/l7-protocols/
$(eval $(call BuildPackage,libiptc))
$(eval $(call BuildPackage,libxtables))
$(eval $(call BuildPackage,iptables))
$(eval $(call BuildPackage,iptables-utils))
$(eval $(call BuildPlugin,iptables-mod-conntrack,$(IPT_CONNTRACK-m)))

425
package/iptables/patches/1.3.8/002-layer7_2.17.patch
View file

@ -1,425 +0,0 @@
Index: iptables-1.3.8/extensions/.layer7-test
===================================================================
--- /dev/null
+++ iptables-1.3.8/extensions/.layer7-test
@@ -0,0 +1,2 @@
+#! /bin/sh
+[ -f $KERNEL_DIR/include/linux/netfilter_ipv4/ipt_layer7.h ] && echo layer7
Index: iptables-1.3.8/extensions/libipt_layer7.c
===================================================================
--- /dev/null
+++ iptables-1.3.8/extensions/libipt_layer7.c
@@ -0,0 +1,394 @@
+/*
+ Shared library add-on to iptables to add layer 7 matching support.
+
+ By Matthew Strait <quadong@users.sf.net>, Oct 2003.
+
+ http://l7-filter.sf.net
+
+ 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.
+ http://www.gnu.org/licenses/gpl.txt
+
+ Based on libipt_string.c (C) 2000 Emmanuel Roger <winfield@freegates.be>
+*/
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <netdb.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <ctype.h>
+#include <dirent.h>
+
+#include <iptables.h>
+#include <linux/netfilter_ipv4/ipt_layer7.h>
+
+#define MAX_FN_LEN 256
+
+static char l7dir[MAX_FN_LEN] = "\0";
+
+/* Function which prints out usage message. */
+static void help(void)
+{
+ printf(
+ "LAYER7 match v%s options:\n"
+ "--l7dir <directory> : Look for patterns here instead of /etc/l7-protocols/\n"
+ " (--l7dir must be specified before --l7proto if used!)\n"
+ "--l7proto [!] <name> : Match the protocol defined in /etc/l7-protocols/name.pat\n",
+ IPTABLES_VERSION);
+ fputc('\n', stdout);
+}
+
+static struct option opts[] = {
+ { .name = "l7proto", .has_arg = 1, .flag = 0, .val = '1' },
+ { .name = "l7dir", .has_arg = 1, .flag = 0, .val = '2' },
+ { .name = 0 }
+};
+
+/* reads filename, puts protocol info into layer7_protocol_info, number of protocols to numprotos */
+int parse_protocol_file(char * filename, const unsigned char * protoname, struct ipt_layer7_info *info)
+{
+ FILE * f;
+ char * line = NULL;
+ size_t len = 0;
+
+ enum { protocol, pattern, done } datatype = protocol;
+
+ f = fopen(filename, "r");
+
+ if(!f)
+ return 0;
+
+ while(getline(&line, &len, f) != -1)
+ {
+ if(strlen(line) < 2 || line[0] == '#')
+ continue;
+
+ /* strip the pesky newline... */
+ if(line[strlen(line) - 1] == '\n')
+ line[strlen(line) - 1] = '\0';
+
+ if(datatype == protocol)
+ {
+ /* Ignore everything on the line beginning with the
+ first space or tab . For instance, this allows the
+ protocol line in http.pat to be "http " (or
+ "http I am so cool") instead of just "http". */
+ if(strchr(line, ' ')){
+ char * space = strchr(line, ' ');
+ space[0] = '\0';
+ }
+ if(strchr(line, '\t')){
+ char * space = strchr(line, '\t');
+ space[0] = '\0';
+ }
+
+ /* sanity check. First non-comment non-blank
+ line must be the same as the file name. */
+ if(strcmp(line, protoname))
+ exit_error(OTHER_PROBLEM,
+ "Protocol name (%s) doesn't match file name (%s). Bailing out\n",
+ line, filename);
+
+ if(strlen(line) >= MAX_PROTOCOL_LEN)
+ exit_error(PARAMETER_PROBLEM,
+ "Protocol name in %s too long!", filename);
+ strncpy(info->protocol, line, MAX_PROTOCOL_LEN);
+
+ datatype = pattern;
+ }
+ else if(datatype == pattern)
+ {
+ if(strlen(line) >= MAX_PATTERN_LEN)
+ exit_error(PARAMETER_PROBLEM, "Pattern in %s too long!", filename);
+ strncpy(info->pattern, line, MAX_PATTERN_LEN);
+
+ datatype = done;
+ break;
+ }
+ else
+ exit_error(OTHER_PROBLEM, "Internal error");
+ }
+
+ if(datatype != done)
+ exit_error(OTHER_PROBLEM, "Failed to get all needed data from %s", filename);
+
+ if(line) free(line);
+ fclose(f);
+
+ return 1;
+
+/*
+ fprintf(stderr, "protocol: %s\npattern: %s\n\n",
+ info->protocol,
+ info->pattern);
+*/
+}
+
+static int hex2dec(char c)
+{
+ switch (c)
+ {
+ case '0' ... '9':
+ return c - '0';
+ case 'a' ... 'f':
+ return c - 'a' + 10;
+ case 'A' ... 'F':
+ return c - 'A' + 10;
+ default:
+ exit_error(OTHER_PROBLEM, "hex2dec: bad value!\n");
+ return 0;
+ }
+}
+
+/* takes a string with \xHH escapes and returns one with the characters
+they stand for */
+static char * pre_process(char * s)
+{
+ char * result = malloc(strlen(s) + 1);
+ int sindex = 0, rindex = 0;
+ while( sindex < strlen(s) )
+ {
+ if( sindex + 3 < strlen(s) &&
+ s[sindex] == '\\' && s[sindex+1] == 'x' &&
+ isxdigit(s[sindex + 2]) && isxdigit(s[sindex + 3]) )
+ {
+ /* carefully remember to call tolower here... */
+ result[rindex] = tolower( hex2dec(s[sindex + 2])*16 +
+ hex2dec(s[sindex + 3] ) );
+
+ switch ( result[rindex] )
+ {
+ case 0x24:
+ case 0x28:
+ case 0x29:
+ case 0x2a:
+ case 0x2b:
+ case 0x2e:
+ case 0x3f:
+ case 0x5b:
+ case 0x5c:
+ case 0x5d:
+ case 0x5e:
+ case 0x7c:
+ fprintf(stderr,
+ "Warning: layer7 regexp contains a control character, %c, in hex (\\x%c%c).\n"
+ "I recommend that you write this as %c or \\%c, depending on what you meant.\n",
+ result[rindex], s[sindex + 2], s[sindex + 3], result[rindex], result[rindex]);
+ break;
+ case 0x00:
+ fprintf(stderr,
+ "Warning: null (\\x00) in layer7 regexp. A null terminates the regexp string!\n");
+ break;
+ default:
+ break;
+ }
+
+
+ sindex += 3; /* 4 total */
+ }
+ else
+ result[rindex] = tolower(s[sindex]);
+
+ sindex++;
+ rindex++;
+ }
+ result[rindex] = '\0';
+
+ return result;
+}
+
+#define MAX_SUBDIRS 128
+char ** readl7dir(char * dirname)
+{
+ DIR * scratchdir;
+ struct dirent ** namelist;
+ char ** subdirs = malloc(MAX_SUBDIRS * sizeof(char *));
+
+ int n, d = 1;
+ subdirs[0] = "";
+
+ n = scandir(dirname, &namelist, 0, alphasort);
+
+ if (n < 0)
+ {
+ perror("scandir");
+ exit_error(OTHER_PROBLEM, "Couldn't open %s\n", dirname);
+ }
+ else
+ {
+ while(n--)
+ {
+ char fulldirname[MAX_FN_LEN];
+
+ snprintf(fulldirname, MAX_FN_LEN, "%s/%s", dirname, namelist[n]->d_name);
+
+ if((scratchdir = opendir(fulldirname)) != NULL)
+ {
+ closedir(scratchdir);
+
+ if(!strcmp(namelist[n]->d_name, ".") ||
+ !strcmp(namelist[n]->d_name, ".."))
+ /* do nothing */ ;
+ else
+ {
+ subdirs[d] = malloc(strlen(namelist[n]->d_name) + 1);
+ strcpy(subdirs[d], namelist[n]->d_name);
+ d++;
+ if(d >= MAX_SUBDIRS - 1)
+ {
+ fprintf(stderr,
+ "Too many subdirectories, skipping the rest!\n");
+ break;
+ }
+ }
+ }
+ free(namelist[n]);
+ }
+ free(namelist);
+ }
+
+ subdirs[d] = NULL;
+
+ return subdirs;
+}
+
+static void
+parse_layer7_protocol(const unsigned char *s, struct ipt_layer7_info *info)
+{
+ char filename[MAX_FN_LEN];
+ char * dir = NULL;
+ char ** subdirs;
+ int n = 0, done = 0;
+
+ if(strlen(l7dir) > 0)
+ dir = l7dir;
+ else
+ dir = "/etc/l7-protocols";
+
+ subdirs = readl7dir(dir);
+
+ while(subdirs[n] != NULL)
+ {
+ int c = snprintf(filename, MAX_FN_LEN, "%s/%s/%s.pat", dir, subdirs[n], s);
+
+ //fprintf(stderr, "Trying to find pattern in %s ... ", filename);
+
+ if(c > MAX_FN_LEN)
+ {
+ exit_error(OTHER_PROBLEM,
+ "Filename beginning with %s is too long!\n", filename);
+ }
+
+ /* read in the pattern from the file */
+ if(parse_protocol_file(filename, s, info))
+ {
+ //fprintf(stderr, "found\n");
+ done = 1;
+ break;
+ }
+
+ //fprintf(stderr, "not found\n");
+
+ n++;
+ }
+
+ if(!done)
+ exit_error(OTHER_PROBLEM,
+ "Couldn't find a pattern definition file for %s.\n", s);
+
+ /* process \xHH escapes and tolower everything. (our regex lib has no
+ case insensitivity option.) */
+ strncpy(info->pattern, pre_process(info->pattern), MAX_PATTERN_LEN);
+}
+
+/* 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)
+{
+ struct ipt_layer7_info *layer7info =
+ (struct ipt_layer7_info *)(*match)->data;
+
+ switch (c) {
+ case '1':
+ check_inverse(optarg, &invert, &optind, 0);
+ parse_layer7_protocol(argv[optind-1], layer7info);
+ if (invert)
+ layer7info->invert = 1;
+ *flags = 1;
+ break;
+
+ case '2':
+ /* not going to use this, but maybe we need to strip a ! anyway (?) */
+ check_inverse(optarg, &invert, &optind, 0);
+
+ if(strlen(argv[optind-1]) >= MAX_FN_LEN)
+ exit_error(PARAMETER_PROBLEM, "directory name too long\n");
+
+ strncpy(l7dir, argv[optind-1], MAX_FN_LEN);
+
+ *flags = 1;
+ break;
+
+ default:
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Final check; must have specified --l7proto */
+static void final_check(unsigned int flags)
+{
+ if (!flags)
+ exit_error(PARAMETER_PROBLEM,
+ "LAYER7 match: You must specify `--l7proto'");
+}
+
+static void print_protocol(char s[], int invert, int numeric)
+{
+ fputs("l7proto ", stdout);
+ if (invert) fputc('!', stdout);
+ printf("%s ", s);
+}
+
+/* Prints out the matchinfo. */
+static void print(const struct ipt_ip *ip,
+ const struct ipt_entry_match *match,
+ int numeric)
+{
+ printf("LAYER7 ");
+
+ print_protocol(((struct ipt_layer7_info *)match->data)->protocol,
+ ((struct ipt_layer7_info *)match->data)->invert, numeric);
+}
+/* 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_layer7_info *info =
+ (const struct ipt_layer7_info*) match->data;
+
+ printf("--l7proto %s%s ", (info->invert) ? "! ": "", info->protocol);
+}
+
+static struct iptables_match layer7 = {
+ .name = "layer7",
+ .version = IPTABLES_VERSION,
+ .size = IPT_ALIGN(sizeof(struct ipt_layer7_info)),
+ .userspacesize = IPT_ALIGN(sizeof(struct ipt_layer7_info)),
+ .help = &help,
+ .parse = &parse,
+ .final_check = &final_check,
+ .print = &print,
+ .save = &save,
+ .extra_opts = opts
+};
+
+void _init(void)
+{
+ register_match(&layer7);
+}
Index: iptables-1.3.8/extensions/libipt_layer7.man
===================================================================
--- /dev/null
+++ iptables-1.3.8/extensions/libipt_layer7.man
@@ -0,0 +1,14 @@
+This module matches packets based on the application layer data of
+their connections. It uses regular expression matching to compare
+the application layer data to regular expressions found it the layer7
+configuration files. This is an experimental module which can be found at
+http://l7-filter.sf.net. It takes two options.
+.TP
+.BI "--l7proto " "\fIprotocol\fP"
+Match the specified protocol. The protocol name must match a file
+name in /etc/l7-protocols/ or one of its first-level child directories.
+.TP
+.BI "--l7dir " "\fIdirectory\fP"
+Use \fIdirectory\fP instead of /etc/l7-protocols/. This option must be
+specified before --l7proto.
+

42
package/iptables/patches/1.3.8/003-layer7_2.17_pktmatch.patch
View file

@ -1,42 +0,0 @@
Index: iptables-1.3.8/extensions/libipt_layer7.c
===================================================================
--- iptables-1.3.8.orig/extensions/libipt_layer7.c
+++ iptables-1.3.8/extensions/libipt_layer7.c
@@ -37,7 +37,8 @@ static void help(void)
"LAYER7 match v%s options:\n"
"--l7dir <directory> : Look for patterns here instead of /etc/l7-protocols/\n"
" (--l7dir must be specified before --l7proto if used!)\n"
- "--l7proto [!] <name> : Match the protocol defined in /etc/l7-protocols/name.pat\n",
+ "--l7proto [!] <name> : Match the protocol defined in /etc/l7-protocols/name.pat\n"
+ "--l7pkt : Skip connection tracking and match individual packets\n",
IPTABLES_VERSION);
fputc('\n', stdout);
}
@@ -45,6 +46,7 @@ static void help(void)
static struct option opts[] = {
{ .name = "l7proto", .has_arg = 1, .flag = 0, .val = '1' },
{ .name = "l7dir", .has_arg = 1, .flag = 0, .val = '2' },
+ { .name = "l7pkt", .has_arg = 0, .flag = 0, .val = '3' },
{ .name = 0 }
};
@@ -333,6 +335,9 @@ static int parse(int c, char **argv, int
*flags = 1;
break;
+ case '3':
+ layer7info->pkt = 1;
+ break;
default:
return 0;
@@ -365,6 +370,9 @@ static void print(const struct ipt_ip *i
print_protocol(((struct ipt_layer7_info *)match->data)->protocol,
((struct ipt_layer7_info *)match->data)->invert, numeric);
+
+ if (((struct ipt_layer7_info *)match->data)->pkt)
+ printf("l7pkt ");
}
/* Saves the union ipt_matchinfo in parsable form to stdout. */
static void save(const struct ipt_ip *ip, const struct ipt_entry_match *match)

222
package/iptables/patches/1.3.8/004-drop_multiport_v0_support.patch
View file

@ -1,222 +0,0 @@
Index: iptables-1.3.8/extensions/libipt_multiport.c
===================================================================
--- iptables-1.3.8.orig/extensions/libipt_multiport.c
+++ iptables-1.3.8/extensions/libipt_multiport.c
@@ -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)
{
@@ -70,26 +52,6 @@ proto_to_name(u_int8_t proto)
}
}
-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,
@@ -156,58 +118,6 @@ check_proto(const struct ipt_entry *entr
"multiport only works with TCP, UDP, UDPLITE, SCTP and DCCP");
}
-/* 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,
@@ -284,43 +194,6 @@ print_port(u_int16_t port, u_int8_t prot
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,
@@ -364,34 +237,6 @@ print_v1(const struct ipt_ip *ip,
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)
{
@@ -427,19 +272,20 @@ static void save_v1(const struct ipt_ip
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
};

228
package/iptables/patches/1.3.8/005-imq1.patch
View file

@ -1,228 +0,0 @@
Index: iptables-1.3.8/extensions/.IMQ-test6
===================================================================
--- /dev/null
+++ iptables-1.3.8/extensions/.IMQ-test6
@@ -0,0 +1,3 @@
+#!/bin/sh
+# True if IMQ target patch is applied.
+[ -f $KERNEL_DIR/net/ipv6/netfilter/ip6t_IMQ.c ] && echo IMQ
Index: iptables-1.3.8/extensions/libip6t_IMQ.c
===================================================================
--- /dev/null
+++ iptables-1.3.8/extensions/libip6t_IMQ.c
@@ -0,0 +1,101 @@
+/* Shared library add-on to iptables to add IMQ target support. */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <ip6tables.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/netfilter_ipv6/ip6t_IMQ.h>
+
+/* Function which prints out usage message. */
+static void
+help(void)
+{
+ printf(
+"IMQ target v%s options:\n"
+" --todev <N> enqueue to imq<N>, defaults to 0\n",
+IPTABLES_VERSION);
+}
+
+static struct option opts[] = {
+ { "todev", 1, 0, '1' },
+ { 0 }
+};
+
+/* Initialize the target. */
+static void
+init(struct ip6t_entry_target *t, unsigned int *nfcache)
+{
+ struct ip6t_imq_info *mr = (struct ip6t_imq_info*)t->data;
+
+ mr->todev = 0;
+ *nfcache |= NFC_UNKNOWN;
+}
+
+/* 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 ip6t_entry *entry,
+ struct ip6t_entry_target **target)
+{
+ struct ip6t_imq_info *mr = (struct ip6t_imq_info*)(*target)->data;
+
+ switch(c) {
+ case '1':
+ if (check_inverse(optarg, &invert, NULL, 0))
+ exit_error(PARAMETER_PROBLEM,
+ "Unexpected `!' after --todev");
+ mr->todev=atoi(optarg);
+ break;
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+static void
+final_check(unsigned int flags)
+{
+}
+
+/* Prints out the targinfo. */
+static void
+print(const struct ip6t_ip6 *ip,
+ const struct ip6t_entry_target *target,
+ int numeric)
+{
+ struct ip6t_imq_info *mr = (struct ip6t_imq_info*)target->data;
+
+ printf("IMQ: todev %u ", mr->todev);
+}
+
+/* Saves the union ipt_targinfo in parsable form to stdout. */
+static void
+save(const struct ip6t_ip6 *ip, const struct ip6t_entry_target *target)
+{
+ struct ip6t_imq_info *mr = (struct ip6t_imq_info*)target->data;
+
+ printf("--todev %u", mr->todev);
+}
+
+static struct ip6tables_target imq = {
+ .next = NULL,
+ .name = "IMQ",
+ .version = IPTABLES_VERSION,
+ .size = IP6T_ALIGN(sizeof(struct ip6t_imq_info)),
+ .userspacesize = IP6T_ALIGN(sizeof(struct ip6t_imq_info)),
+ .help = &help,
+ .init = &init,
+ .parse = &parse,
+ .final_check = &final_check,
+ .print = &print,
+ .save = &save,
+ .extra_opts = opts
+};
+
+static __attribute__((constructor)) void _init(void)
+{
+ register_target6(&imq);
+}
Index: iptables-1.3.8/extensions/.IMQ-test
===================================================================
--- /dev/null
+++ iptables-1.3.8/extensions/.IMQ-test
@@ -0,0 +1,3 @@
+#!/bin/sh
+# True if IMQ target patch is applied.
+[ -f $KERNEL_DIR/net/ipv4/netfilter/ipt_IMQ.c ] && echo IMQ
Index: iptables-1.3.8/extensions/libipt_IMQ.c
===================================================================
--- /dev/null
+++ iptables-1.3.8/extensions/libipt_IMQ.c
@@ -0,0 +1,101 @@
+/* Shared library add-on to iptables to add IMQ target support. */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <iptables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv4/ipt_IMQ.h>
+
+/* Function which prints out usage message. */
+static void
+help(void)
+{
+ printf(
+"IMQ target v%s options:\n"
+" --todev <N> enqueue to imq<N>, defaults to 0\n",
+IPTABLES_VERSION);
+}
+
+static struct option opts[] = {
+ { "todev", 1, 0, '1' },
+ { 0 }
+};
+
+/* Initialize the target. */
+static void
+init(struct ipt_entry_target *t, unsigned int *nfcache)
+{
+ struct ipt_imq_info *mr = (struct ipt_imq_info*)t->data;
+
+ mr->todev = 0;
+ *nfcache |= NFC_UNKNOWN;
+}
+
+/* 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,
+ struct ipt_entry_target **target)
+{
+ struct ipt_imq_info *mr = (struct ipt_imq_info*)(*target)->data;
+
+ switch(c) {
+ case '1':
+ if (check_inverse(optarg, &invert, NULL, 0))
+ exit_error(PARAMETER_PROBLEM,
+ "Unexpected `!' after --todev");
+ mr->todev=atoi(optarg);
+ break;
+ default:
+ return 0;
+ }
+ return 1;
+}
+
+static void
+final_check(unsigned int flags)
+{
+}
+
+/* Prints out the targinfo. */
+static void
+print(const struct ipt_ip *ip,
+ const struct ipt_entry_target *target,
+ int numeric)
+{
+ struct ipt_imq_info *mr = (struct ipt_imq_info*)target->data;
+
+ printf("IMQ: todev %u ", mr->todev);
+}
+
+/* Saves the union ipt_targinfo in parsable form to stdout. */
+static void
+save(const struct ipt_ip *ip, const struct ipt_entry_target *target)
+{
+ struct ipt_imq_info *mr = (struct ipt_imq_info*)target->data;
+
+ printf("--todev %u", mr->todev);
+}
+
+static struct iptables_target imq = {
+ .next = NULL,
+ .name = "IMQ",
+ .version = IPTABLES_VERSION,
+ .size = IPT_ALIGN(sizeof(struct ipt_imq_info)),
+ .userspacesize = IPT_ALIGN(sizeof(struct ipt_imq_info)),
+ .help = &help,
+ .init = &init,
+ .parse = &parse,
+ .final_check = &final_check,
+ .print = &print,
+ .save = &save,
+ .extra_opts = opts
+};
+
+static __attribute__((constructor)) void _init(void)
+{
+ register_target(&imq);
+}

11
package/iptables/patches/1.3.8/006-ipt_conntrack.patch
View file

@ -1,11 +0,0 @@
--- ./include/linux/netfilter_ipv4/ipt_conntrack.h.orig 2008-09-27 10:26:49.000000000 -0400
+++ ./include/linux/netfilter_ipv4/ipt_conntrack.h 2008-09-27 01:15:57.000000000 -0400
@@ -52,7 +52,7 @@
struct {
u_int32_t ip;
union {
- u_int16_t all;
+ u_int32_t all;
} u;
/* The protocol. */

12
package/iptables/patches/1.4.3.2/002-layer7_2.17.patch
View file

@ -1,6 +1,6 @@
diff -Nur iptables.old/extensions/libxt_layer7.c iptables.new/extensions/libxt_layer7.c
--- iptables.old/extensions/libxt_layer7.c 1970-01-01 01:00:00.000000000 +0100
+++ iptables.new/extensions/libxt_layer7.c 2008-08-22 16:00:52.000000000 +0200
diff -Nur a/libxt_layer7.c b/libxt_layer7.c
--- a/libxt_layer7.c 1970-01-01 01:00:00.000000000 +0100
+++ b/libxt_layer7.c 2008-08-22 16:00:52.000000000 +0200
@@ -0,0 +1,368 @@
+/*
+ Shared library add-on to iptables for layer 7 matching support.
@ -370,9 +370,9 @@ diff -Nur iptables.old/extensions/libxt_layer7.c iptables.new/extensions/libxt_l
+{
+ xtables_register_match(&layer7);
+}
diff -Nur iptables.old/extensions/libxt_layer7.man iptables.new/extensions/libxt_layer7.man
--- iptables.old/extensions/libxt_layer7.man 1970-01-01 01:00:00.000000000 +0100
+++ iptables.new/extensions/libxt_layer7.man 2008-08-22 16:00:52.000000000 +0200
diff -Nur a/libxt_layer7.man b/libxt_layer7.man
--- a/libxt_layer7.man 1970-01-01 01:00:00.000000000 +0100
+++ b/libxt_layer7.man 2008-08-22 16:00:52.000000000 +0200
@@ -0,0 +1,14 @@
+This module matches packets based on the application layer data of
+their connections. It uses regular expression matching to compare

33
package/iptables/patches/1.4.3.2/005-imq1.patch
View file

@ -1,26 +1,25 @@
--- iptables-1.4.1-rc3.orig/extensions/.IMQ-test 1970-01-01 10:00:00.000000000 +1000
+++ iptables-1.4.1-rc3/extensions/.IMQ-test 2008-06-08 22:41:49.000000000 +1000
--- /dev/null
+++ b/extensions/.IMQ-test
@@ -0,0 +1,3 @@
+#!/bin/sh
+# True if IMQ target patch is applied.
+[ -f $KERNEL_DIR/include/linux/netfilter_ipv4/ipt_IMQ.h ] && echo IMQ
diff -pruN iptables-1.4.1-rc3.orig/extensions/.IMQ-test6 iptables-1.4.1-rc3/extensions/.IMQ-test6
--- iptables-1.4.1-rc3.orig/extensions/.IMQ-test6 1970-01-01 10:00:00.000000000 +1000
+++ iptables-1.4.1-rc3/extensions/.IMQ-test6 2008-06-08 22:41:49.000000000 +1000
--- /dev/null
+++ b/extensions/.IMQ-test6
@@ -0,0 +1,3 @@
+#!/bin/sh
+# True if IMQ target patch is applied.
+[ -f $KERNEL_DIR/include/linux/netfilter_ipv6/ip6t_IMQ.h ] && echo IMQ
diff -pruN iptables-1.4.1-rc3.orig/extensions/libip6t_IMQ.c iptables-1.4.1-rc3/extensions/libip6t_IMQ.c
--- iptables-1.4.1-rc3.orig/extensions/libip6t_IMQ.c 1970-01-01 10:00:00.000000000 +1000
+++ iptables-1.4.1-rc3/extensions/libip6t_IMQ.c 2008-06-08 22:46:57.000000000 +1000
@@ -0,0 +1,89 @@
--- /dev/null
+++ b/extensions/libip6t_IMQ.c
@@ -0,0 +1,90 @@
+/* Shared library add-on to iptables to add IMQ target support. */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <xtables.h>
+#include <ip6tables.h>
+#include <linux/netfilter_ipv6/ip6_tables.h>
+#include <linux/netfilter_ipv6/ip6t_IMQ.h>
@ -57,8 +56,8 @@ diff -pruN iptables-1.4.1-rc3.orig/extensions/libip6t_IMQ.c iptables-1.4.1-rc3/e
+
+ switch(c) {
+ case '1':
+ if (check_inverse(optarg, &invert, NULL, 0))
+ exit_error(PARAMETER_PROBLEM,
+ if (xtables_check_inverse(optarg, &invert, NULL, 0))
+ xtables_error(PARAMETER_PROBLEM,
+ "Unexpected `!' after --todev");
+ mr->todev=atoi(optarg);
+ break;
@ -104,16 +103,16 @@ diff -pruN iptables-1.4.1-rc3.orig/extensions/libip6t_IMQ.c iptables-1.4.1-rc3/e
+{
+ xtables_register_target(&imq);
+}
diff -pruN iptables-1.4.1-rc3.orig/extensions/libipt_IMQ.c iptables-1.4.1-rc3/extensions/libipt_IMQ.c
--- iptables-1.4.1-rc3.orig/extensions/libipt_IMQ.c 1970-01-01 10:00:00.000000000 +1000
+++ iptables-1.4.1-rc3/extensions/libipt_IMQ.c 2008-06-08 22:46:25.000000000 +1000
@@ -0,0 +1,88 @@
--- /dev/null
+++ b/extensions/libipt_IMQ.c
@@ -0,0 +1,89 @@
+/* Shared library add-on to iptables to add IMQ target support. */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <getopt.h>
+
+#include <xtables.h>
+#include <iptables.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+#include <linux/netfilter_ipv4/ipt_IMQ.h>
@ -149,8 +148,8 @@ diff -pruN iptables-1.4.1-rc3.orig/extensions/libipt_IMQ.c iptables-1.4.1-rc3/ex
+
+ switch(c) {
+ case '1':
+ if (check_inverse(optarg, &invert, NULL, 0))
+ exit_error(PARAMETER_PROBLEM,
+ if (xtables_check_inverse(optarg, &invert, NULL, 0))
+ xtables_error(PARAMETER_PROBLEM,
+ "Unexpected `!' after --todev");
+ mr->todev=atoi(optarg);
+ break;

272
target/linux/generic-2.4/patches/602-netfilter_layer7_2.17_with_pktmatch.patch → target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch
View file

@ -1,16 +1,14 @@
Index: linux-2.4.35.4/Documentation/Configure.help
===================================================================
--- linux-2.4.35.4.orig/Documentation/Configure.help
+++ linux-2.4.35.4/Documentation/Configure.help
@@ -29207,6 +29207,18 @@ CONFIG_SOUND_WM97XX
--- a/Documentation/Configure.help
+++ b/Documentation/Configure.help
@@ -29207,6 +29207,18 @@
If unsure, say N.
+CONFIG_IP_NF_MATCH_LAYER7
+ Say Y if you want to be able to classify connections (and their
+ packets) based on regular expression matching of their application
+ layer data. This is one way to classify applications such as
+ peer-to-peer filesharing systems that do not always use the same
+ Say Y if you want to be able to classify connections (and their
+ packets) based on regular expression matching of their application
+ layer data. This is one way to classify applications such as
+ peer-to-peer filesharing systems that do not always use the same
+ port.
+
+ To compile it as a module, choose M here. If unsure, say N.
@ -21,11 +19,9 @@ Index: linux-2.4.35.4/Documentation/Configure.help
#
# A couple of things I keep forgetting:
# capitalize: AppleTalk, Ethernet, DOS, DMA, FAT, FTP, Internet,
Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ip_conntrack.h
===================================================================
--- linux-2.4.35.4.orig/include/linux/netfilter_ipv4/ip_conntrack.h
+++ linux-2.4.35.4/include/linux/netfilter_ipv4/ip_conntrack.h
@@ -207,6 +207,17 @@ struct ip_conntrack
--- a/include/linux/netfilter_ipv4/ip_conntrack.h
+++ b/include/linux/netfilter_ipv4/ip_conntrack.h
@@ -207,6 +207,17 @@
} nat;
#endif /* CONFIG_IP_NF_NAT_NEEDED */
@ -33,9 +29,9 @@ Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ip_conntrack.h
+ struct {
+ unsigned int numpackets; /* surely this is kept track of somewhere else, right? I can't find it... */
+ char * app_proto; /* "http", "ftp", etc. NULL if unclassifed */
+
+
+ /* the application layer data so far. NULL if ->numpackets > numpackets */
+ char * app_data;
+ char * app_data;
+
+ unsigned int app_data_len;
+ } layer7;
@ -43,12 +39,10 @@ Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ip_conntrack.h
};
/* get master conntrack via master expectation */
Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ipt_layer7.h
===================================================================
--- /dev/null
+++ linux-2.4.35.4/include/linux/netfilter_ipv4/ipt_layer7.h
@@ -0,0 +1,27 @@
+/*
+++ b/include/linux/netfilter_ipv4/ipt_layer7.h
@@ -0,0 +1,26 @@
+/*
+ By Matthew Strait <quadong@users.sf.net>, Dec 2003.
+ http://l7-filter.sf.net
+
@ -69,31 +63,26 @@ Index: linux-2.4.35.4/include/linux/netfilter_ipv4/ipt_layer7.h
+
+struct ipt_layer7_info {
+ char protocol[MAX_PROTOCOL_LEN];
+ char invert:1;
+ char pattern[MAX_PATTERN_LEN];
+ u_int8_t invert;
+ u_int8_t pkt;
+};
+
+#endif /* _IPT_LAYER7_H */
Index: linux-2.4.35.4/net/ipv4/netfilter/Config.in
===================================================================
--- linux-2.4.35.4.orig/net/ipv4/netfilter/Config.in
+++ linux-2.4.35.4/net/ipv4/netfilter/Config.in
@@ -44,6 +44,9 @@ if [ "$CONFIG_IP_NF_IPTABLES" != "n" ];
--- a/net/ipv4/netfilter/Config.in
+++ b/net/ipv4/netfilter/Config.in
@@ -44,6 +44,9 @@
if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
dep_tristate ' Unclean match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_UNCLEAN $CONFIG_IP_NF_IPTABLES
dep_tristate ' Owner match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_OWNER $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' Layer 7 match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_LAYER7 $CONFIG_IP_NF_CONNTRACK
+ dep_mbool ' Layer 7 debugging output (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_LAYER7_DEBUG $CONFIG_IP_NF_MATCH_LAYER7
+
+
fi
# The targets
dep_tristate ' Packet filtering' CONFIG_IP_NF_FILTER $CONFIG_IP_NF_IPTABLES
Index: linux-2.4.35.4/net/ipv4/netfilter/Makefile
===================================================================
--- linux-2.4.35.4.orig/net/ipv4/netfilter/Makefile
+++ linux-2.4.35.4/net/ipv4/netfilter/Makefile
@@ -87,6 +87,7 @@ obj-$(CONFIG_IP_NF_MATCH_STATE) += ipt_s
--- a/net/ipv4/netfilter/Makefile
+++ b/net/ipv4/netfilter/Makefile
@@ -87,6 +87,7 @@
obj-$(CONFIG_IP_NF_MATCH_CONNTRACK) += ipt_conntrack.o
obj-$(CONFIG_IP_NF_MATCH_UNCLEAN) += ipt_unclean.o
obj-$(CONFIG_IP_NF_MATCH_TCPMSS) += ipt_tcpmss.o
@ -101,11 +90,9 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/Makefile
# targets
obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
Index: linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_core.c
===================================================================
--- linux-2.4.35.4.orig/net/ipv4/netfilter/ip_conntrack_core.c
+++ linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_core.c
@@ -346,6 +346,14 @@ destroy_conntrack(struct nf_conntrack *n
--- a/net/ipv4/netfilter/ip_conntrack_core.c
+++ b/net/ipv4/netfilter/ip_conntrack_core.c
@@ -346,6 +346,14 @@
}
kfree(ct->master);
}
@ -116,15 +103,13 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_core.c
+ if(ct->layer7.app_data)
+ kfree(ct->layer7.app_data);
+ #endif
+
+
WRITE_UNLOCK(&ip_conntrack_lock);
if (master)
Index: linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_standalone.c
===================================================================
--- linux-2.4.35.4.orig/net/ipv4/netfilter/ip_conntrack_standalone.c
+++ linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_standalone.c
@@ -107,6 +107,13 @@ print_conntrack(char *buffer, struct ip_
--- a/net/ipv4/netfilter/ip_conntrack_standalone.c
+++ b/net/ipv4/netfilter/ip_conntrack_standalone.c
@@ -107,6 +107,13 @@
len += sprintf(buffer + len, "[ASSURED] ");
len += sprintf(buffer + len, "use=%u ",
atomic_read(&conntrack->ct_general.use));
@ -132,21 +117,19 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ip_conntrack_standalone.c
+ #if defined(CONFIG_IP_NF_MATCH_LAYER7) || defined(CONFIG_IP_NF_MATCH_LAYER7_MODULE)
+ if(conntrack->layer7.app_proto)
+ len += sprintf(buffer + len, "l7proto=%s ",
+ conntrack->layer7.app_proto);
+ conntrack->layer7.app_proto);
+ #endif
+
len += sprintf(buffer + len, "\n");
return len;
Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
===================================================================
--- /dev/null
+++ linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
@@ -0,0 +1,595 @@
+/*
+ Kernel module to match application layer (OSI layer 7)
+++ b/net/ipv4/netfilter/ipt_layer7.c
@@ -0,0 +1,570 @@
+/*
+ Kernel module to match application layer (OSI layer 7)
+ data in connections.
+
+
+ http://l7-filter.sf.net
+
+ By Matthew Strait and Ethan Sommer, 2003-2005.
@ -203,24 +186,24 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+
+/* I'm new to locking. Here are my assumptions:
+
+- No one will write to /proc/net/layer7_numpackets over and over very fast;
+- No one will write to /proc/net/layer7_numpackets over and over very fast;
+ if they did, nothing awful would happen.
+
+- This code will never be processing the same packet twice at the same time,
+ because iptables rules are traversed in order.
+
+- It doesn't matter if two packets from different connections are in here at
+- It doesn't matter if two packets from different connections are in here at
+ the same time, because they don't share any data.
+
+- It _does_ matter if two packets from the same connection are here at the same
+ time. In this case, we have to protect the conntracks and the list of
+ time. In this case, we have to protect the conntracks and the list of
+ compiled patterns.
+*/
+DECLARE_RWLOCK(ct_lock);
+DECLARE_LOCK(list_lock);
+
+#if CONFIG_IP_NF_MATCH_LAYER7_DEBUG
+/* Converts an unfriendly string into a friendly one by
+/* Converts an unfriendly string into a friendly one by
+replacing unprintables with periods and all whitespace with " ". */
+static char * friendly_print(unsigned char * s)
+{
@ -228,7 +211,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ int i;
+
+ if(!f) {
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in friendly_print, bailing.\n");
+ return NULL;
+ }
@ -252,7 +235,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ return (char)(i - 10 + 'a');
+ break;
+ default:
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk("Problem in dec2hex\n");
+ return '\0';
+ }
@ -264,7 +247,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ int i;
+
+ if(!g) {
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in hex_print, bailing.\n");
+ return NULL;
+ }
@ -282,7 +265,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+
+/* Use instead of regcomp. As we expect to be seeing the same regexps over and
+over again, it make sense to cache the results. */
+static regexp * compile_and_cache(char * regex_string, char * protocol)
+static regexp * compile_and_cache(char * regex_string, char * protocol)
+{
+ struct pattern_cache * node = first_pattern_cache;
+ struct pattern_cache * last_pattern_cache = first_pattern_cache;
@ -290,7 +273,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ unsigned int len;
+
+ while (node != NULL) {
+ if (!strcmp(node->regex_string, regex_string))
+ if (!strcmp(node->regex_string, regex_string))
+ return node->pattern;
+
+ last_pattern_cache = node;/* points at the last non-NULL node */
@ -298,12 +281,12 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ }
+
+ /* If we reach the end of the list, then we have not yet cached
+ the pattern for this regex. Let's do that now.
+ the pattern for this regex. Let's do that now.
+ Be paranoid about running out of memory to avoid list corruption. */
+ tmp = kmalloc(sizeof(struct pattern_cache), GFP_ATOMIC);
+
+ if(!tmp) {
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in compile_and_cache, bailing.\n");
+ return NULL;
+ }
@ -313,7 +296,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ tmp->next = NULL;
+
+ if(!tmp->regex_string || !tmp->pattern) {
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in compile_and_cache, bailing.\n");
+ kfree(tmp->regex_string);
+ kfree(tmp->pattern);
@ -334,7 +317,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ DPRINTK("About to compile this: \"%s\"\n", regex_string);
+ node->pattern = regcomp(regex_string, &len);
+ if ( !node->pattern ) {
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: Error compiling regexp \"%s\" (%s)\n", regex_string, protocol);
+ /* pattern is now cached as NULL, so we won't try again. */
+ }
@ -357,14 +340,14 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+/* Returns offset the into the skb->data that the application data starts */
+static int app_data_offset(const struct sk_buff *skb)
+{
+ /* In case we are ported somewhere (ebtables?) where skb->nh.iph
+ /* In case we are ported somewhere (ebtables?) where skb->nh.iph
+ isn't set, this can be gotten from 4*(skb->data[0] & 0x0f) as well. */
+ int ip_hl = 4*skb->nh.iph->ihl;
+
+ if( skb->nh.iph->protocol == IPPROTO_TCP ) {
+ /* 12 == offset into TCP header for the header length field.
+ Can't get this with skb->h.th->doff because the tcphdr
+ struct doesn't get set when routing (this is confirmed to be
+ /* 12 == offset into TCP header for the header length field.
+ Can't get this with skb->h.th->doff because the tcphdr
+ struct doesn't get set when routing (this is confirmed to be
+ true in Netfilter as well as QoS.) */
+ int tcp_hl = 4*(skb->data[ip_hl + 12] >> 4);
+
@ -374,7 +357,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ } else if( skb->nh.iph->protocol == IPPROTO_ICMP ) {
+ return ip_hl + 8; /* ICMP header is 8 bytes */
+ } else {
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: tried to handle unknown protocol!\n");
+ return ip_hl + 8; /* something reasonable */
+ }
@ -394,9 +377,9 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ char * f = friendly_print(master_conntrack->layer7.app_data);
+ char * g = hex_print(master_conntrack->layer7.app_data);
+ DPRINTK("\nl7-filter gave up after %d bytes (%d packets):\n%s\n",
+ strlen(f),
+ strlen(f),
+ TOTAL_PACKETS, f);
+ kfree(f);
+ kfree(f);
+ DPRINTK("In hex: %s\n", g);
+ kfree(g);
+ }
@ -413,7 +396,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ if(!conntrack->layer7.app_proto) {
+ conntrack->layer7.app_proto = kmalloc(strlen(master_conntrack->layer7.app_proto)+1, GFP_ATOMIC);
+ if(!conntrack->layer7.app_proto){
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in match_no_append, bailing.\n");
+ WRITE_UNLOCK(&ct_lock);
+ return 1;
@ -421,16 +404,16 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ strcpy(conntrack->layer7.app_proto, master_conntrack->layer7.app_proto);
+ }
+ WRITE_UNLOCK(&ct_lock);
+
+
+ return (!strcmp(master_conntrack->layer7.app_proto, info->protocol));
+ }
+ else {
+ /* If not classified, set to "unknown" to distinguish from
+ /* If not classified, set to "unknown" to distinguish from
+ connections that are still being tested. */
+ WRITE_LOCK(&ct_lock);
+ master_conntrack->layer7.app_proto = kmalloc(strlen("unknown")+1, GFP_ATOMIC);
+ if(!master_conntrack->layer7.app_proto){
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in match_no_append, bailing.\n");
+ WRITE_UNLOCK(&ct_lock);
+ return 1;
@ -441,34 +424,26 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ }
+}
+
+static int add_datastr(char *target, int offset, char *app_data, int len)
+/* add the new app data to the conntrack. Return number of bytes added. */
+static int add_data(struct ip_conntrack * master_conntrack,
+ char * app_data, int appdatalen)
+{
+ int length = 0, i;
+ int oldlength = master_conntrack->layer7.app_data_len;
+
+ /* Strip nulls. Make everything lower case (our regex lib doesn't
+ do case insensitivity). Add it to the end of the current data. */
+ for(i = 0; i < maxdatalen-offset-1 && i < len; i++) {
+ for(i = 0; i < maxdatalen-oldlength-1 && i < appdatalen; i++) {
+ if(app_data[i] != '\0') {
+ target[length+offset] =
+ master_conntrack->layer7.app_data[length+oldlength] =
+ /* the kernel version of tolower mungs 'upper ascii' */
+ isascii(app_data[i])? tolower(app_data[i]) : app_data[i];
+ length++;
+ }
+ }
+
+ target[length+offset] = '\0';
+
+ return length;
+}
+
+/* add the new app data to the conntrack. Return number of bytes added. */
+static int add_data(struct ip_conntrack * master_conntrack,
+ char * app_data, int appdatalen)
+{
+ int length;
+
+ length = add_datastr(master_conntrack->layer7.app_data, master_conntrack->layer7.app_data_len, app_data, appdatalen);
+ master_conntrack->layer7.app_data_len += length;
+ master_conntrack->layer7.app_data[length+oldlength] = '\0';
+ master_conntrack->layer7.app_data_len = length + oldlength;
+
+ return length;
+}
@ -481,7 +456,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ struct ipt_layer7_info * info = (struct ipt_layer7_info *)matchinfo;
+ enum ip_conntrack_info master_ctinfo, ctinfo;
+ struct ip_conntrack *master_conntrack, *conntrack;
+ unsigned char *app_data, *tmp_data;
+ unsigned char * app_data;
+ unsigned int pattern_result, appdatalen;
+ regexp * comppattern;
+
@ -490,16 +465,16 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ return info->invert;
+ }
+
+ /* Treat the parent and all its children together as one connection,
+ except for the purpose of setting conntrack->layer7.app_proto in the
+ actual connection. This makes /proc/net/ip_conntrack somewhat more
+ /* Treat the parent and all its children together as one connection,
+ except for the purpose of setting conntrack->layer7.app_proto in the
+ actual connection. This makes /proc/net/ip_conntrack somewhat more
+ satisfying. */
+ if(!(conntrack = ip_conntrack_get((struct sk_buff *)skb, &ctinfo)) ||
+ !(master_conntrack = ip_conntrack_get((struct sk_buff *)skb, &master_ctinfo))) {
+ DPRINTK("layer7: packet is not from a known connection, giving up.\n");
+ return info->invert;
+ }
+
+
+ /* Try to get a master conntrack (and its master etc) for FTP, etc. */
+ while (master_ct(master_conntrack) != NULL)
+ master_conntrack = master_ct(master_conntrack);
@ -511,12 +486,12 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ }
+
+ /* if we've classified it or seen too many packets */
+ if(!info->pkt && (TOTAL_PACKETS > num_packets ||
+ master_conntrack->layer7.app_proto)) {
+
+ if(TOTAL_PACKETS > num_packets ||
+ master_conntrack->layer7.app_proto) {
+
+ pattern_result = match_no_append(conntrack, master_conntrack, ctinfo, master_ctinfo, info);
+
+ /* skb->cb[0] == seen. Avoid doing things twice if there are two l7
+
+ /* skb->cb[0] == seen. Avoid doing things twice if there are two l7
+ rules. I'm not sure that using cb for this purpose is correct, although
+ it says "put your private variables there". But it doesn't look like it
+ is being used for anything else in the skbs that make it here. How can
@ -528,12 +503,12 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+
+ if(skb_is_nonlinear(skb)){
+ if(skb_linearize(skb, GFP_ATOMIC) != 0){
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: failed to linearize packet, bailing.\n");
+ return info->invert;
+ }
+ }
+
+
+ /* now that the skb is linearized, it's safe to set these. */
+ app_data = skb->data + app_data_offset(skb);
+ appdatalen = skb->tail - app_data;
@ -543,23 +518,6 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ comppattern = compile_and_cache(info->pattern, info->protocol);
+ UNLOCK_BH(&list_lock);
+
+ if (info->pkt) {
+ tmp_data = kmalloc(maxdatalen, GFP_ATOMIC);
+ if(!tmp_data){
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
+ return info->invert;
+ }
+
+ tmp_data[0] = '\0';
+ add_datastr(tmp_data, 0, app_data, appdatalen);
+ pattern_result = ((comppattern && regexec(comppattern, tmp_data)) ? 1 : 0);
+ kfree(tmp_data);
+ tmp_data = NULL;
+
+ return (pattern_result ^ info->invert);
+ }
+
+ /* On the first packet of a connection, allocate space for app data */
+ WRITE_LOCK(&ct_lock);
+ if(TOTAL_PACKETS == 1 && !skb->cb[0] && !master_conntrack->layer7.app_data) {
@ -575,7 +533,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ }
+ WRITE_UNLOCK(&ct_lock);
+
+ /* Can be here, but unallocated, if numpackets is increased near
+ /* Can be here, but unallocated, if numpackets is increased near
+ the beginning of a connection */
+ if(master_conntrack->layer7.app_data == NULL)
+ return (info->invert); /* unmatched */
@ -607,7 +565,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ WRITE_LOCK(&ct_lock);
+ master_conntrack->layer7.app_proto = kmalloc(strlen(info->protocol)+1, GFP_ATOMIC);
+ if(!master_conntrack->layer7.app_proto){
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
+ WRITE_UNLOCK(&ct_lock);
+ return (pattern_result ^ info->invert);
@ -625,16 +583,16 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+static int checkentry(const char *tablename, const struct ipt_ip *ip,
+ void *matchinfo, unsigned int matchsize, unsigned int hook_mask)
+{
+ if (matchsize != IPT_ALIGN(sizeof(struct ipt_layer7_info)))
+ if (matchsize != IPT_ALIGN(sizeof(struct ipt_layer7_info)))
+ return 0;
+ return 1;
+}
+
+static struct ipt_match layer7_match = {
+ .name = "layer7",
+ .match = &match,
+ .checkentry = &checkentry,
+ .me = THIS_MODULE
+static struct ipt_match layer7_match = {
+ .name = "layer7",
+ .match = &match,
+ .checkentry = &checkentry,
+ .me = THIS_MODULE
+};
+
+/* taken from drivers/video/modedb.c */
@ -654,30 +612,30 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+}
+
+/* write out num_packets to userland. */
+static int layer7_read_proc(char* page, char ** start, off_t off, int count,
+ int* eof, void * data)
+static int layer7_read_proc(char* page, char ** start, off_t off, int count,
+ int* eof, void * data)
+{
+ if(num_packets > 99 && net_ratelimit())
+ if(num_packets > 99 && net_ratelimit())
+ printk(KERN_ERR "layer7: NOT REACHED. num_packets too big\n");
+
+
+ page[0] = num_packets/10 + '0';
+ page[1] = num_packets%10 + '0';
+ page[2] = '\n';
+ page[3] = '\0';
+
+
+ *eof=1;
+
+ return 3;
+}
+
+/* Read in num_packets from userland */
+static int layer7_write_proc(struct file* file, const char* buffer,
+ unsigned long count, void *data)
+static int layer7_write_proc(struct file* file, const char* buffer,
+ unsigned long count, void *data)
+{
+ char * foo = kmalloc(count, GFP_ATOMIC);
+
+ if(!foo){
+ if (net_ratelimit())
+ if (net_ratelimit())
+ printk(KERN_ERR "layer7: out of memory, bailing. num_packets unchanged.\n");
+ return count;
+ }
@ -687,7 +645,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ num_packets = my_atoi(foo);
+ kfree (foo);
+
+ /* This has an arbitrary limit to make the math easier. I'm lazy.
+ /* This has an arbitrary limit to make the math easier. I'm lazy.
+ But anyway, 99 is a LOT! If you want more, you're doing it wrong! */
+ if(num_packets > 99) {
+ printk(KERN_WARNING "layer7: num_packets can't be > 99.\n");
@ -696,7 +654,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ printk(KERN_WARNING "layer7: num_packets can't be < 1.\n");
+ num_packets = 1;
+ }
+
+
+ return count;
+}
+
@ -721,11 +679,11 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+ printk(KERN_WARNING "layer7: maxdatalen can't be < 1, using 1\n");
+ maxdatalen = 1;
+ }
+ /* This is not a hard limit. It's just here to prevent people from
+ /* This is not a hard limit. It's just here to prevent people from
+ bringing their slow machines to a grinding halt. */
+ else if(maxdatalen > 65536) {
+ printk(KERN_WARNING "layer7: maxdatalen can't be > 65536, using 65536\n");
+ maxdatalen = 65536;
+ maxdatalen = 65536;
+ }
+ return ipt_register_match(&layer7_match);
+}
@ -738,10 +696,8 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/ipt_layer7.c
+
+module_init(init);
+module_exit(fini);
Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
===================================================================
--- /dev/null
+++ linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+++ b/net/ipv4/netfilter/regexp/regexp.c
@@ -0,0 +1,1195 @@
+/*
+ * regcomp and regexec -- regsub and regerror are elsewhere
@ -770,7 +726,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+ *
+ * This code was modified by Ethan Sommer to work within the kernel
+ * (it now uses kmalloc etc..)
+ *
+ *
+ * Modified slightly by Matthew Strait to use more modern C.
+ */
+
@ -1098,7 +1054,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+ }
+
+ /* Make a closing node, and hook it on the end. */
+ ender = regnode((paren) ? CLOSE+parno : END);
+ ender = regnode((paren) ? CLOSE+parno : END);
+ regtail(ret, ender);
+
+ /* Hook the tails of the branches to the closing node. */
@ -1789,7 +1745,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+/*
+ - regnext - dig the "next" pointer out of a node
+ */
+static char*
+static char*
+regnext(char *p)
+{
+ register int offset;
@ -1830,7 +1786,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+ next = regnext(s);
+ if (next == NULL) /* Next ptr. */
+ printf("(0)");
+ else
+ else
+ printf("(%d)", (s-r->program)+(next-s));
+ s += 3;
+ if (op == ANYOF || op == ANYBUT || op == EXACTLY) {
@ -1938,10 +1894,8 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.c
+#endif
+
+
Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.h
===================================================================
--- /dev/null
+++ linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.h
+++ b/net/ipv4/netfilter/regexp/regexp.h
@@ -0,0 +1,40 @@
+/*
+ * Definitions etc. for regexp(3) routines.
@ -1953,8 +1907,8 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.h
+#ifndef REGEXP_H
+#define REGEXP_H
+
+/*
+http://www.opensource.apple.com/darwinsource/10.3/expect-1/expect/expect.h ,
+/*
+http://www.opensource.apple.com/darwinsource/10.3/expect-1/expect/expect.h ,
+which contains a version of this library, says:
+
+ *
@ -1983,20 +1937,16 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regexp.h
+void regerror(char *s);
+
+#endif
Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regmagic.h
===================================================================
--- /dev/null
+++ linux-2.4.35.4/net/ipv4/netfilter/regexp/regmagic.h
+++ b/net/ipv4/netfilter/regexp/regmagic.h
@@ -0,0 +1,5 @@
+/*
+ * The first byte of the regexp internal "program" is actually this magic
+ * number; the start node begins in the second byte.
+ */
+#define MAGIC 0234
Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regsub.c
===================================================================
--- /dev/null
+++ linux-2.4.35.4/net/ipv4/netfilter/regexp/regsub.c
+++ b/net/ipv4/netfilter/regexp/regsub.c
@@ -0,0 +1,95 @@
+/*
+ * regsub
@ -2054,7 +2004,7 @@ Index: linux-2.4.35.4/net/ipv4/netfilter/regexp/regsub.c
+ register char c;
+ register int no;
+ register int len;
+
+
+ /* Not necessary and gcc doesn't like it -MLS */
+ /*extern char *strncpy();*/
+