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-rw-r--r--target/linux/generic-2.4/patches/617-netfilter_time.patch238
1 files changed, 238 insertions, 0 deletions
diff --git a/target/linux/generic-2.4/patches/617-netfilter_time.patch b/target/linux/generic-2.4/patches/617-netfilter_time.patch
new file mode 100644
index 0000000000..3593571b46
--- /dev/null
+++ b/target/linux/generic-2.4/patches/617-netfilter_time.patch
@@ -0,0 +1,238 @@
+diff -urN linux-2.4.32.orig/net/ipv4/netfilter/Config.in linux-2.4.32/net/ipv4/netfilter/Config.in
+--- linux-2.4.32.orig/net/ipv4/netfilter/Config.in 2006-01-07 12:11:37.000000000 +0100
++++ linux-2.4.32/net/ipv4/netfilter/Config.in 2006-01-07 12:15:45.000000000 +0100
+@@ -48,6 +48,7 @@
+ dep_tristate ' netfilter MARK match support' CONFIG_IP_NF_MATCH_MARK $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' Multiple port match support' CONFIG_IP_NF_MATCH_MULTIPORT $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' TOS match support' CONFIG_IP_NF_MATCH_TOS $CONFIG_IP_NF_IPTABLES
++ dep_tristate ' TIME match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_TIME $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' condition match support' CONFIG_IP_NF_MATCH_CONDITION $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' recent match support' CONFIG_IP_NF_MATCH_RECENT $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' ECN match support' CONFIG_IP_NF_MATCH_ECN $CONFIG_IP_NF_IPTABLES
+diff -urN linux-2.4.32.orig/net/ipv4/netfilter/ipt_time.c linux-2.4.32/net/ipv4/netfilter/ipt_time.c
+--- linux-2.4.32.orig/net/ipv4/netfilter/ipt_time.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.4.32/net/ipv4/netfilter/ipt_time.c 2006-01-07 12:14:32.000000000 +0100
+@@ -0,0 +1,193 @@
++/*
++ This is a module which is used for time matching
++ It is using some modified code from dietlibc (localtime() function)
++ that you can find at http://www.fefe.de/dietlibc/
++ This file is distributed under the terms of the GNU General Public
++ License (GPL). Copies of the GPL can be obtained from: ftp://prep.ai.mit.edu/pub/gnu/GPL
++ 2001-05-04 Fabrice MARIE <fabrice@netfilter.org> : initial development.
++ 2001-21-05 Fabrice MARIE <fabrice@netfilter.org> : bug fix in the match code,
++ thanks to "Zeng Yu" <zengy@capitel.com.cn> for bug report.
++ 2001-26-09 Fabrice MARIE <fabrice@netfilter.org> : force the match to be in LOCAL_IN or PRE_ROUTING only.
++ 2001-30-11 Fabrice : added the possibility to use the match in FORWARD/OUTPUT with a little hack,
++ added Nguyen Dang Phuoc Dong <dongnd@tlnet.com.vn> patch to support timezones.
++ 2004-05-02 Fabrice : added support for date matching, from an idea of Fabien COELHO.
++*/
++
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ipt_time.h>
++#include <linux/time.h>
++
++MODULE_AUTHOR("Fabrice MARIE <fabrice@netfilter.org>");
++MODULE_DESCRIPTION("Match arrival timestamp/date");
++MODULE_LICENSE("GPL");
++
++struct tm
++{
++ int tm_sec; /* Seconds. [0-60] (1 leap second) */
++ int tm_min; /* Minutes. [0-59] */
++ int tm_hour; /* Hours. [0-23] */
++ int tm_mday; /* Day. [1-31] */
++ int tm_mon; /* Month. [0-11] */
++ int tm_year; /* Year - 1900. */
++ int tm_wday; /* Day of week. [0-6] */
++ int tm_yday; /* Days in year.[0-365] */
++ int tm_isdst; /* DST. [-1/0/1]*/
++
++ long int tm_gmtoff; /* we don't care, we count from GMT */
++ const char *tm_zone; /* we don't care, we count from GMT */
++};
++
++void
++localtime(const time_t *timepr, struct tm *r);
++
++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 ipt_time_info *info = matchinfo; /* match info for rule */
++ struct tm currenttime; /* time human readable */
++ u_int8_t days_of_week[7] = {64, 32, 16, 8, 4, 2, 1};
++ u_int16_t packet_time;
++ struct timeval kerneltimeval;
++ time_t packet_local_time;
++
++ /* if kerneltime=1, we don't read the skb->timestamp but kernel time instead */
++ if (info->kerneltime)
++ {
++ do_gettimeofday(&kerneltimeval);
++ packet_local_time = kerneltimeval.tv_sec;
++ }
++ else
++ packet_local_time = skb->stamp.tv_sec;
++
++ /* First we make sure we are in the date start-stop boundaries */
++ if ((packet_local_time < info->date_start) || (packet_local_time > info->date_stop))
++ return 0; /* We are outside the date boundaries */
++
++ /* Transform the timestamp of the packet, in a human readable form */
++ localtime(&packet_local_time, &currenttime);
++
++ /* check if we match this timestamp, we start by the days... */
++ if ((days_of_week[currenttime.tm_wday] & info->days_match) != days_of_week[currenttime.tm_wday])
++ return 0; /* the day doesn't match */
++
++ /* ... check the time now */
++ packet_time = (currenttime.tm_hour * 60) + currenttime.tm_min;
++ if ((packet_time < info->time_start) || (packet_time > info->time_stop))
++ return 0;
++
++ /* here we match ! */
++ return 1;
++}
++
++static int
++checkentry(const char *tablename,
++ const struct ipt_ip *ip,
++ void *matchinfo,
++ unsigned int matchsize,
++ unsigned int hook_mask)
++{
++ struct ipt_time_info *info = matchinfo; /* match info for rule */
++
++ /* First, check that we are in the correct hooks */
++ if (hook_mask
++ & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) | (1 << NF_IP_LOCAL_OUT)))
++ {
++ printk("ipt_time: error, only valid for PRE_ROUTING, LOCAL_IN, FORWARD and OUTPUT)\n");
++ return 0;
++ }
++ /* we use the kerneltime if we are in forward or output */
++ info->kerneltime = 1;
++ if (hook_mask & ~((1 << NF_IP_FORWARD) | (1 << NF_IP_LOCAL_OUT)))
++ /* we use the skb time */
++ info->kerneltime = 0;
++
++ /* Check the size */
++ if (matchsize != IPT_ALIGN(sizeof(struct ipt_time_info)))
++ return 0;
++ /* Now check the coherence of the data ... */
++ if ((info->time_start > 1439) || /* 23*60+59 = 1439*/
++ (info->time_stop > 1439))
++ {
++ printk(KERN_WARNING "ipt_time: invalid argument\n");
++ return 0;
++ }
++
++ return 1;
++}
++
++static struct ipt_match time_match = {
++ .name = "time",
++ .match = match,
++ .checkentry = checkentry,
++ .me = THIS_MODULE,
++};
++
++static int __init init(void)
++{
++ printk("ipt_time loading\n");
++ return ipt_register_match(&time_match);
++}
++
++static void __exit fini(void)
++{
++ ipt_unregister_match(&time_match);
++ printk("ipt_time unloaded\n");
++}
++
++module_init(init);
++module_exit(fini);
++
++
++/* The part below is borowed and modified from dietlibc */
++
++/* seconds per day */
++#define SPD 24*60*60
++
++void
++localtime(const time_t *timepr, struct tm *r) {
++ time_t i;
++ time_t timep;
++ extern struct timezone sys_tz;
++ const unsigned int __spm[12] =
++ { 0,
++ (31),
++ (31+28),
++ (31+28+31),
++ (31+28+31+30),
++ (31+28+31+30+31),
++ (31+28+31+30+31+30),
++ (31+28+31+30+31+30+31),
++ (31+28+31+30+31+30+31+31),
++ (31+28+31+30+31+30+31+31+30),
++ (31+28+31+30+31+30+31+31+30+31),
++ (31+28+31+30+31+30+31+31+30+31+30),
++ };
++ register time_t work;
++
++ timep = (*timepr) - (sys_tz.tz_minuteswest * 60);
++ work=timep%(SPD);
++ r->tm_sec=work%60; work/=60;
++ r->tm_min=work%60; r->tm_hour=work/60;
++ work=timep/(SPD);
++ r->tm_wday=(4+work)%7;
++ for (i=1970; ; ++i) {
++ register time_t k= (!(i%4) && ((i%100) || !(i%400)))?366:365;
++ if (work>k)
++ work-=k;
++ else
++ break;
++ }
++ r->tm_year=i-1900;
++ for (i=11; i && __spm[i]>work; --i) ;
++ r->tm_mon=i;
++ r->tm_mday=work-__spm[i]+1;
++}
+diff -urN linux-2.4.32.orig/net/ipv4/netfilter/Makefile linux-2.4.32/net/ipv4/netfilter/Makefile
+--- linux-2.4.32.orig/net/ipv4/netfilter/Makefile 2006-01-07 12:11:37.000000000 +0100
++++ linux-2.4.32/net/ipv4/netfilter/Makefile 2006-01-07 12:16:07.000000000 +0100
+@@ -118,6 +118,7 @@
+ obj-$(CONFIG_IP_NF_MATCH_MULTIPORT) += ipt_multiport.o
+ obj-$(CONFIG_IP_NF_MATCH_OWNER) += ipt_owner.o
+ obj-$(CONFIG_IP_NF_MATCH_TOS) += ipt_tos.o
++obj-$(CONFIG_IP_NF_MATCH_TIME) += ipt_time.o
+ obj-$(CONFIG_IP_NF_MATCH_CONDITION) += ipt_condition.o
+
+ obj-$(CONFIG_IP_NF_MATCH_RECENT) += ipt_recent.o
+diff -urN linux-2.4.32.orig/include/linux/netfilter_ipv4/ipt_time.h linux-2.4.32/include/linux/netfilter_ipv4/ipt_time.h
+--- linux-2.4.32.orig/include/linux/netfilter_ipv4/ipt_time.h 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.4.32/include/linux/netfilter_ipv4/ipt_time.h 2006-01-07 12:16:42.000000000 +0100
+@@ -0,0 +1,15 @@
++#ifndef __ipt_time_h_included__
++#define __ipt_time_h_included__
++
++
++struct ipt_time_info {
++ u_int8_t days_match; /* 1 bit per day. -SMTWTFS */
++ u_int16_t time_start; /* 0 < time_start < 23*60+59 = 1439 */
++ u_int16_t time_stop; /* 0:0 < time_stat < 23:59 */
++ u_int8_t kerneltime; /* ignore skb time (and use kerneltime) or not. */
++ time_t date_start;
++ time_t date_stop;
++};
++
++
++#endif /* __ipt_time_h_included__ */
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