diff options
Diffstat (limited to 'target/linux/generic-2.4/patches')
| -rw-r--r-- | target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch (renamed from target/linux/generic-2.4/patches/602-netfilter_layer7_2.17_with_pktmatch.patch) | 272 |
1 files changed, 111 insertions, 161 deletions
diff --git a/target/linux/generic-2.4/patches/602-netfilter_layer7_2.17_with_pktmatch.patch b/target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch index 8fb23409ae..7ad8436212 100644 --- a/target/linux/generic-2.4/patches/602-netfilter_layer7_2.17_with_pktmatch.patch +++ b/target/linux/generic-2.4/patches/602-netfilter_layer7_2.21.patch @@ -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();*/ + |