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author | Felix Fietkau <nbd@openwrt.org> | 2008-09-29 01:08:17 +0000 |
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committer | Felix Fietkau <nbd@openwrt.org> | 2008-09-29 01:08:17 +0000 |
commit | bc92b67c41bb9eb64dd342735cf04d0ca5098926 (patch) | |
tree | fb3cad267265be9ac8eb1532182422f278dc3d0a /target/linux/generic-2.6/patches-2.6.27/140-netfilter_time.patch | |
parent | 9b2097af21c4298fb67622266d5587e4e680fc5c (diff) | |
download | master-31e0f0ae-bc92b67c41bb9eb64dd342735cf04d0ca5098926.tar.gz master-31e0f0ae-bc92b67c41bb9eb64dd342735cf04d0ca5098926.tar.bz2 master-31e0f0ae-bc92b67c41bb9eb64dd342735cf04d0ca5098926.zip |
port generic and ixp4xx kernel patches to 2.6.27 (compiles except for iptables, but otherwise completely untested)
SVN-Revision: 12790
Diffstat (limited to 'target/linux/generic-2.6/patches-2.6.27/140-netfilter_time.patch')
-rw-r--r-- | target/linux/generic-2.6/patches-2.6.27/140-netfilter_time.patch | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.27/140-netfilter_time.patch b/target/linux/generic-2.6/patches-2.6.27/140-netfilter_time.patch new file mode 100644 index 0000000000..aecc852ead --- /dev/null +++ b/target/linux/generic-2.6/patches-2.6.27/140-netfilter_time.patch @@ -0,0 +1,239 @@ +--- /dev/null ++++ b/include/linux/netfilter_ipv4/ipt_time.h +@@ -0,0 +1,18 @@ ++#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 */ ++ ++ /* FIXME: Keep this one for userspace iptables binary compability: */ ++ 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__ */ +--- /dev/null ++++ b/net/ipv4/netfilter/ipt_time.c +@@ -0,0 +1,180 @@ ++/* ++ 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 u32 time, struct tm *r); ++ ++static bool ++match(const struct sk_buff *skb, ++ const struct net_device *in, ++ const struct net_device *out, ++ const struct xt_match *match, ++ const void *matchinfo, ++ int offset, ++ unsigned int protoff, ++ bool *hotdrop) ++{ ++ const struct ipt_time_info *info = matchinfo; /* match info for rule */ ++ struct timeval tv; ++ 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; ++ ++ /* We might not have a timestamp, get one */ ++ if (skb->tstamp.tv64 == 0) ++ __net_timestamp((struct sk_buff *)skb); ++ ++ skb_get_timestamp(skb, &tv); ++ /* First we make sure we are in the date start-stop boundaries */ ++ if ((tv.tv_sec < info->date_start) || (tv.tv_sec > info->date_stop)) ++ return 0; /* We are outside the date boundaries */ ++ ++ /* Transform the timestamp of the packet, in a human readable form */ ++ localtime(tv.tv_sec, ¤ttime); ++ ++ /* 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 bool ++checkentry(const char *tablename, ++ const void *ip, ++ const struct xt_match *match, ++ void *matchinfo, ++ 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_INET_PRE_ROUTING) | (1 << NF_INET_LOCAL_IN) | (1 << NF_INET_FORWARD) | (1 << NF_INET_LOCAL_OUT))) ++ { ++ printk("ipt_time: error, only valid for PRE_ROUTING, LOCAL_IN, FORWARD and OUTPUT)\n"); ++ 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, ++ .matchsize = sizeof(struct ipt_time_info), ++ .checkentry = &checkentry, ++ .me = THIS_MODULE ++}; ++ ++static int __init init(void) ++{ ++ printk("ipt_time loading\n"); ++ return xt_register_match(&time_match); ++} ++ ++static void __exit fini(void) ++{ ++ xt_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 u32 time, struct tm *r) { ++ u32 i, 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 u32 work; ++ ++ timep = time - (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; ++} +--- a/net/ipv4/netfilter/Kconfig ++++ b/net/ipv4/netfilter/Kconfig +@@ -63,6 +63,22 @@ + help + Module for matching traffic of various Peer-to-Peer applications + ++ ++config IP_NF_MATCH_TIME ++ tristate 'TIME match support' ++ depends on IP_NF_IPTABLES ++ help ++ This option adds a `time' match, which allows you ++ to match based on the packet arrival time/date ++ (arrival time/date at the machine which netfilter is running on) or ++ departure time/date (for locally generated packets). ++ ++ If you say Y here, try iptables -m time --help for more information. ++ If you want to compile it as a module, say M here and read ++ ++ Documentation/modules.txt. If unsure, say `N'. ++ ++ + config IP_NF_MATCH_RECENT + tristate '"recent" match support' + depends on IP_NF_IPTABLES +--- a/net/ipv4/netfilter/Makefile ++++ b/net/ipv4/netfilter/Makefile +@@ -51,6 +51,7 @@ + obj-$(CONFIG_IP_NF_MATCH_RECENT) += ipt_recent.o + obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o + obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set.o ++obj-$(CONFIG_IP_NF_MATCH_TIME) += ipt_time.o + + obj-$(CONFIG_IP_NF_MATCH_IPP2P) += ipt_ipp2p.o + |