--- /dev/null
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_conntrack.h linux.stock/include/linux/netfilter_ipv4/ip_conntrack.h
+--- linux/include/linux/netfilter_ipv4/ip_conntrack.h 2003-08-12 07:43:11.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_conntrack.h 2004-05-09 04:13:03.000000000 -0400
+@@ -45,39 +45,27 @@
+
+ #include <linux/netfilter_ipv4/ip_conntrack_tcp.h>
+ #include <linux/netfilter_ipv4/ip_conntrack_icmp.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
+
+ /* per conntrack: protocol private data */
+ union ip_conntrack_proto {
+ /* insert conntrack proto private data here */
+- struct ip_ct_gre gre;
+ struct ip_ct_tcp tcp;
+ struct ip_ct_icmp icmp;
+ };
+
+ union ip_conntrack_expect_proto {
+ /* insert expect proto private data here */
+- struct ip_ct_gre_expect gre;
+ };
+
+ /* Add protocol helper include file here */
+-#include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_mms.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
+-
+ #include <linux/netfilter_ipv4/ip_conntrack_ftp.h>
+ #include <linux/netfilter_ipv4/ip_conntrack_irc.h>
+-#include <linux/netfilter_ipv4/ip_autofw.h>
+
+ /* per expectation: application helper private data */
+ union ip_conntrack_expect_help {
+ /* insert conntrack helper private data (expect) here */
+- struct ip_ct_pptp_expect exp_pptp_info;
+- struct ip_ct_mms_expect exp_mms_info;
+- struct ip_ct_h225_expect exp_h225_info;
+ struct ip_ct_ftp_expect exp_ftp_info;
+ struct ip_ct_irc_expect exp_irc_info;
+- struct ip_autofw_expect exp_autofw_info;
+
+ #ifdef CONFIG_IP_NF_NAT_NEEDED
+ union {
+@@ -89,21 +77,16 @@
+ /* per conntrack: application helper private data */
+ union ip_conntrack_help {
+ /* insert conntrack helper private data (master) here */
+- struct ip_ct_pptp_master ct_pptp_info;
+- struct ip_ct_mms_master ct_mms_info;
+- struct ip_ct_h225_master ct_h225_info;
+ struct ip_ct_ftp_master ct_ftp_info;
+ struct ip_ct_irc_master ct_irc_info;
+ };
+
+ #ifdef CONFIG_IP_NF_NAT_NEEDED
+ #include <linux/netfilter_ipv4/ip_nat.h>
+-#include <linux/netfilter_ipv4/ip_nat_pptp.h>
+
+ /* per conntrack: nat application helper private data */
+ union ip_conntrack_nat_help {
+ /* insert nat helper private data here */
+- struct ip_nat_pptp nat_pptp_info;
+ };
+ #endif
+
+@@ -275,9 +258,5 @@
+ }
+
+ extern unsigned int ip_conntrack_htable_size;
+-
+-/* connection tracking time out variables. */
+-extern int sysctl_ip_conntrack_tcp_timeouts[10];
+-extern int sysctl_ip_conntrack_udp_timeouts[2];
+ #endif /* __KERNEL__ */
+ #endif /* _IP_CONNTRACK_H */
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_conntrack_h323.h linux.stock/include/linux/netfilter_ipv4/ip_conntrack_h323.h
+--- linux/include/linux/netfilter_ipv4/ip_conntrack_h323.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_conntrack_h323.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,30 +0,0 @@
+-#ifndef _IP_CONNTRACK_H323_H
+-#define _IP_CONNTRACK_H323_H
+-/* H.323 connection tracking. */
+-
+-#ifdef __KERNEL__
+-/* Protects H.323 related data */
+-DECLARE_LOCK_EXTERN(ip_h323_lock);
+-#endif
+-
+-/* Default H.225 port */
+-#define H225_PORT 1720
+-
+-/* This structure is per expected connection */
+-struct ip_ct_h225_expect {
+- u_int16_t port; /* Port of the H.225 helper/RTCP/RTP channel */
+- enum ip_conntrack_dir dir; /* Direction of the original connection */
+- unsigned int offset; /* offset of the address in the payload */
+-};
+-
+-/* This structure exists only once per master */
+-struct ip_ct_h225_master {
+- int is_h225; /* H.225 or H.245 connection */
+-#ifdef CONFIG_IP_NF_NAT_NEEDED
+- enum ip_conntrack_dir dir; /* Direction of the original connection */
+- u_int32_t seq[IP_CT_DIR_MAX]; /* Exceptional packet mangling for signal addressess... */
+- unsigned int offset[IP_CT_DIR_MAX]; /* ...and the offset of the addresses in the payload */
+-#endif
+-};
+-
+-#endif /* _IP_CONNTRACK_H323_H */
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_conntrack_mms.h linux.stock/include/linux/netfilter_ipv4/ip_conntrack_mms.h
+--- linux/include/linux/netfilter_ipv4/ip_conntrack_mms.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_conntrack_mms.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,31 +0,0 @@
+-#ifndef _IP_CONNTRACK_MMS_H
+-#define _IP_CONNTRACK_MMS_H
+-/* MMS tracking. */
+-
+-#ifdef __KERNEL__
+-#include <linux/netfilter_ipv4/lockhelp.h>
+-
+-DECLARE_LOCK_EXTERN(ip_mms_lock);
+-
+-#define MMS_PORT 1755
+-#define MMS_SRV_MSG_ID 196610
+-
+-#define MMS_SRV_MSG_OFFSET 36
+-#define MMS_SRV_UNICODE_STRING_OFFSET 60
+-#define MMS_SRV_CHUNKLENLV_OFFSET 16
+-#define MMS_SRV_CHUNKLENLM_OFFSET 32
+-#define MMS_SRV_MESSAGELENGTH_OFFSET 8
+-#endif
+-
+-/* This structure is per expected connection */
+-struct ip_ct_mms_expect {
+- u_int32_t len;
+- u_int32_t padding;
+- u_int16_t port;
+-};
+-
+-/* This structure exists only once per master */
+-struct ip_ct_mms_master {
+-};
+-
+-#endif /* _IP_CONNTRACK_MMS_H */
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_conntrack_pptp.h linux.stock/include/linux/netfilter_ipv4/ip_conntrack_pptp.h
+--- linux/include/linux/netfilter_ipv4/ip_conntrack_pptp.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_conntrack_pptp.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,313 +0,0 @@
+-/* PPTP constants and structs */
+-#ifndef _CONNTRACK_PPTP_H
+-#define _CONNTRACK_PPTP_H
+-
+-/* state of the control session */
+-enum pptp_ctrlsess_state {
+- PPTP_SESSION_NONE, /* no session present */
+- PPTP_SESSION_ERROR, /* some session error */
+- PPTP_SESSION_STOPREQ, /* stop_sess request seen */
+- PPTP_SESSION_REQUESTED, /* start_sess request seen */
+- PPTP_SESSION_CONFIRMED, /* session established */
+-};
+-
+-/* state of the call inside the control session */
+-enum pptp_ctrlcall_state {
+- PPTP_CALL_NONE,
+- PPTP_CALL_ERROR,
+- PPTP_CALL_OUT_REQ,
+- PPTP_CALL_OUT_CONF,
+- PPTP_CALL_IN_REQ,
+- PPTP_CALL_IN_REP,
+- PPTP_CALL_IN_CONF,
+- PPTP_CALL_CLEAR_REQ,
+-};
+-
+-
+-/* conntrack private data */
+-struct ip_ct_pptp_master {
+- enum pptp_ctrlsess_state sstate; /* session state */
+-
+- /* everything below is going to be per-expectation in newnat,
+- * since there could be more than one call within one session */
+- enum pptp_ctrlcall_state cstate; /* call state */
+- u_int16_t pac_call_id; /* call id of PAC, host byte order */
+- u_int16_t pns_call_id; /* call id of PNS, host byte order */
+-};
+-
+-/* conntrack_expect private member */
+-struct ip_ct_pptp_expect {
+- enum pptp_ctrlcall_state cstate; /* call state */
+- u_int16_t pac_call_id; /* call id of PAC */
+- u_int16_t pns_call_id; /* call id of PNS */
+-};
+-
+-
+-#ifdef __KERNEL__
+-
+-#include <linux/netfilter_ipv4/lockhelp.h>
+-DECLARE_LOCK_EXTERN(ip_pptp_lock);
+-
+-#define IP_CONNTR_PPTP PPTP_CONTROL_PORT
+-
+-union pptp_ctrl_union {
+- void *rawreq;
+- struct PptpStartSessionRequest *sreq;
+- struct PptpStartSessionReply *srep;
+- struct PptpStopSessionReqest *streq;
+- struct PptpStopSessionReply *strep;
+- struct PptpOutCallRequest *ocreq;
+- struct PptpOutCallReply *ocack;
+- struct PptpInCallRequest *icreq;
+- struct PptpInCallReply *icack;
+- struct PptpInCallConnected *iccon;
+- struct PptpClearCallRequest *clrreq;
+- struct PptpCallDisconnectNotify *disc;
+- struct PptpWanErrorNotify *wanerr;
+- struct PptpSetLinkInfo *setlink;
+-};
+-
+-
+-
+-#define PPTP_CONTROL_PORT 1723
+-
+-#define PPTP_PACKET_CONTROL 1
+-#define PPTP_PACKET_MGMT 2
+-
+-#define PPTP_MAGIC_COOKIE 0x1a2b3c4d
+-
+-struct pptp_pkt_hdr {
+- __u16 packetLength;
+- __u16 packetType;
+- __u32 magicCookie;
+-};
+-
+-/* PptpControlMessageType values */
+-#define PPTP_START_SESSION_REQUEST 1
+-#define PPTP_START_SESSION_REPLY 2
+-#define PPTP_STOP_SESSION_REQUEST 3
+-#define PPTP_STOP_SESSION_REPLY 4
+-#define PPTP_ECHO_REQUEST 5
+-#define PPTP_ECHO_REPLY 6
+-#define PPTP_OUT_CALL_REQUEST 7
+-#define PPTP_OUT_CALL_REPLY 8
+-#define PPTP_IN_CALL_REQUEST 9
+-#define PPTP_IN_CALL_REPLY 10
+-#define PPTP_IN_CALL_CONNECT 11
+-#define PPTP_CALL_CLEAR_REQUEST 12
+-#define PPTP_CALL_DISCONNECT_NOTIFY 13
+-#define PPTP_WAN_ERROR_NOTIFY 14
+-#define PPTP_SET_LINK_INFO 15
+-
+-#define PPTP_MSG_MAX 15
+-
+-/* PptpGeneralError values */
+-#define PPTP_ERROR_CODE_NONE 0
+-#define PPTP_NOT_CONNECTED 1
+-#define PPTP_BAD_FORMAT 2
+-#define PPTP_BAD_VALUE 3
+-#define PPTP_NO_RESOURCE 4
+-#define PPTP_BAD_CALLID 5
+-#define PPTP_REMOVE_DEVICE_ERROR 6
+-
+-struct PptpControlHeader {
+- __u16 messageType;
+- __u16 reserved;
+-};
+-
+-/* FramingCapability Bitmap Values */
+-#define PPTP_FRAME_CAP_ASYNC 0x1
+-#define PPTP_FRAME_CAP_SYNC 0x2
+-
+-/* BearerCapability Bitmap Values */
+-#define PPTP_BEARER_CAP_ANALOG 0x1
+-#define PPTP_BEARER_CAP_DIGITAL 0x2
+-
+-struct PptpStartSessionRequest {
+- __u16 protocolVersion;
+- __u8 reserved1;
+- __u8 reserved2;
+- __u32 framingCapability;
+- __u32 bearerCapability;
+- __u16 maxChannels;
+- __u16 firmwareRevision;
+- __u8 hostName[64];
+- __u8 vendorString[64];
+-};
+-
+-/* PptpStartSessionResultCode Values */
+-#define PPTP_START_OK 1
+-#define PPTP_START_GENERAL_ERROR 2
+-#define PPTP_START_ALREADY_CONNECTED 3
+-#define PPTP_START_NOT_AUTHORIZED 4
+-#define PPTP_START_UNKNOWN_PROTOCOL 5
+-
+-struct PptpStartSessionReply {
+- __u16 protocolVersion;
+- __u8 resultCode;
+- __u8 generalErrorCode;
+- __u32 framingCapability;
+- __u32 bearerCapability;
+- __u16 maxChannels;
+- __u16 firmwareRevision;
+- __u8 hostName[64];
+- __u8 vendorString[64];
+-};
+-
+-/* PptpStopReasons */
+-#define PPTP_STOP_NONE 1
+-#define PPTP_STOP_PROTOCOL 2
+-#define PPTP_STOP_LOCAL_SHUTDOWN 3
+-
+-struct PptpStopSessionRequest {
+- __u8 reason;
+-};
+-
+-/* PptpStopSessionResultCode */
+-#define PPTP_STOP_OK 1
+-#define PPTP_STOP_GENERAL_ERROR 2
+-
+-struct PptpStopSessionReply {
+- __u8 resultCode;
+- __u8 generalErrorCode;
+-};
+-
+-struct PptpEchoRequest {
+- __u32 identNumber;
+-};
+-
+-/* PptpEchoReplyResultCode */
+-#define PPTP_ECHO_OK 1
+-#define PPTP_ECHO_GENERAL_ERROR 2
+-
+-struct PptpEchoReply {
+- __u32 identNumber;
+- __u8 resultCode;
+- __u8 generalErrorCode;
+- __u16 reserved;
+-};
+-
+-/* PptpFramingType */
+-#define PPTP_ASYNC_FRAMING 1
+-#define PPTP_SYNC_FRAMING 2
+-#define PPTP_DONT_CARE_FRAMING 3
+-
+-/* PptpCallBearerType */
+-#define PPTP_ANALOG_TYPE 1
+-#define PPTP_DIGITAL_TYPE 2
+-#define PPTP_DONT_CARE_BEARER_TYPE 3
+-
+-struct PptpOutCallRequest {
+- __u16 callID;
+- __u16 callSerialNumber;
+- __u32 minBPS;
+- __u32 maxBPS;
+- __u32 bearerType;
+- __u32 framingType;
+- __u16 packetWindow;
+- __u16 packetProcDelay;
+- __u16 reserved1;
+- __u16 phoneNumberLength;
+- __u16 reserved2;
+- __u8 phoneNumber[64];
+- __u8 subAddress[64];
+-};
+-
+-/* PptpCallResultCode */
+-#define PPTP_OUTCALL_CONNECT 1
+-#define PPTP_OUTCALL_GENERAL_ERROR 2
+-#define PPTP_OUTCALL_NO_CARRIER 3
+-#define PPTP_OUTCALL_BUSY 4
+-#define PPTP_OUTCALL_NO_DIAL_TONE 5
+-#define PPTP_OUTCALL_TIMEOUT 6
+-#define PPTP_OUTCALL_DONT_ACCEPT 7
+-
+-struct PptpOutCallReply {
+- __u16 callID;
+- __u16 peersCallID;
+- __u8 resultCode;
+- __u8 generalErrorCode;
+- __u16 causeCode;
+- __u32 connectSpeed;
+- __u16 packetWindow;
+- __u16 packetProcDelay;
+- __u32 physChannelID;
+-};
+-
+-struct PptpInCallRequest {
+- __u16 callID;
+- __u16 callSerialNumber;
+- __u32 callBearerType;
+- __u32 physChannelID;
+- __u16 dialedNumberLength;
+- __u16 dialingNumberLength;
+- __u8 dialedNumber[64];
+- __u8 dialingNumber[64];
+- __u8 subAddress[64];
+-};
+-
+-/* PptpInCallResultCode */
+-#define PPTP_INCALL_ACCEPT 1
+-#define PPTP_INCALL_GENERAL_ERROR 2
+-#define PPTP_INCALL_DONT_ACCEPT 3
+-
+-struct PptpInCallReply {
+- __u16 callID;
+- __u16 peersCallID;
+- __u8 resultCode;
+- __u8 generalErrorCode;
+- __u16 packetWindow;
+- __u16 packetProcDelay;
+- __u16 reserved;
+-};
+-
+-struct PptpInCallConnected {
+- __u16 peersCallID;
+- __u16 reserved;
+- __u32 connectSpeed;
+- __u16 packetWindow;
+- __u16 packetProcDelay;
+- __u32 callFramingType;
+-};
+-
+-struct PptpClearCallRequest {
+- __u16 callID;
+- __u16 reserved;
+-};
+-
+-struct PptpCallDisconnectNotify {
+- __u16 callID;
+- __u8 resultCode;
+- __u8 generalErrorCode;
+- __u16 causeCode;
+- __u16 reserved;
+- __u8 callStatistics[128];
+-};
+-
+-struct PptpWanErrorNotify {
+- __u16 peersCallID;
+- __u16 reserved;
+- __u32 crcErrors;
+- __u32 framingErrors;
+- __u32 hardwareOverRuns;
+- __u32 bufferOverRuns;
+- __u32 timeoutErrors;
+- __u32 alignmentErrors;
+-};
+-
+-struct PptpSetLinkInfo {
+- __u16 peersCallID;
+- __u16 reserved;
+- __u32 sendAccm;
+- __u32 recvAccm;
+-};
+-
+-
+-struct pptp_priv_data {
+- __u16 call_id;
+- __u16 mcall_id;
+- __u16 pcall_id;
+-};
+-
+-#endif /* __KERNEL__ */
+-#endif /* _CONNTRACK_PPTP_H */
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_conntrack_proto_gre.h linux.stock/include/linux/netfilter_ipv4/ip_conntrack_proto_gre.h
+--- linux/include/linux/netfilter_ipv4/ip_conntrack_proto_gre.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_conntrack_proto_gre.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,121 +0,0 @@
+-#ifndef _CONNTRACK_PROTO_GRE_H
+-#define _CONNTRACK_PROTO_GRE_H
+-#include <asm/byteorder.h>
+-
+-/* GRE PROTOCOL HEADER */
+-
+-/* GRE Version field */
+-#define GRE_VERSION_1701 0x0
+-#define GRE_VERSION_PPTP 0x1
+-
+-/* GRE Protocol field */
+-#define GRE_PROTOCOL_PPTP 0x880B
+-
+-/* GRE Flags */
+-#define GRE_FLAG_C 0x80
+-#define GRE_FLAG_R 0x40
+-#define GRE_FLAG_K 0x20
+-#define GRE_FLAG_S 0x10
+-#define GRE_FLAG_A 0x80
+-
+-#define GRE_IS_C(f) ((f)&GRE_FLAG_C)
+-#define GRE_IS_R(f) ((f)&GRE_FLAG_R)
+-#define GRE_IS_K(f) ((f)&GRE_FLAG_K)
+-#define GRE_IS_S(f) ((f)&GRE_FLAG_S)
+-#define GRE_IS_A(f) ((f)&GRE_FLAG_A)
+-
+-/* GRE is a mess: Four different standards */
+-struct gre_hdr {
+-#if defined(__LITTLE_ENDIAN_BITFIELD)
+- __u16 rec:3,
+- srr:1,
+- seq:1,
+- key:1,
+- routing:1,
+- csum:1,
+- version:3,
+- reserved:4,
+- ack:1;
+-#elif defined(__BIG_ENDIAN_BITFIELD)
+- __u16 csum:1,
+- routing:1,
+- key:1,
+- seq:1,
+- srr:1,
+- rec:3,
+- ack:1,
+- reserved:4,
+- version:3;
+-#else
+-#error "Adjust your <asm/byteorder.h> defines"
+-#endif
+- __u16 protocol;
+-};
+-
+-/* modified GRE header for PPTP */
+-struct gre_hdr_pptp {
+- __u8 flags; /* bitfield */
+- __u8 version; /* should be GRE_VERSION_PPTP */
+- __u16 protocol; /* should be GRE_PROTOCOL_PPTP */
+- __u16 payload_len; /* size of ppp payload, not inc. gre header */
+- __u16 call_id; /* peer's call_id for this session */
+- __u32 seq; /* sequence number. Present if S==1 */
+- __u32 ack; /* seq number of highest packet recieved by */
+- /* sender in this session */
+-};
+-
+-
+-/* this is part of ip_conntrack */
+-struct ip_ct_gre {
+- unsigned int stream_timeout;
+- unsigned int timeout;
+-};
+-
+-/* this is part of ip_conntrack_expect */
+-struct ip_ct_gre_expect {
+- struct ip_ct_gre_keymap *keymap_orig, *keymap_reply;
+-};
+-
+-#ifdef __KERNEL__
+-
+-/* structure for original <-> reply keymap */
+-struct ip_ct_gre_keymap {
+- struct list_head list;
+-
+- struct ip_conntrack_tuple tuple;
+- struct ip_conntrack_expect *master;
+-};
+-
+-
+-/* add new tuple->key_reply pair to keymap */
+-int ip_ct_gre_keymap_add(struct ip_conntrack_expect *exp,
+- struct ip_conntrack_tuple *t,
+- int reply);
+-
+-/* change an existing keymap entry */
+-void ip_ct_gre_keymap_change(struct ip_ct_gre_keymap *km,
+- struct ip_conntrack_tuple *t);
+-
+-
+-
+-/* get pointer to gre key, if present */
+-static inline u_int32_t *gre_key(struct gre_hdr *greh)
+-{
+- if (!greh->key)
+- return NULL;
+- if (greh->csum || greh->routing)
+- return (u_int32_t *) (greh+sizeof(*greh)+4);
+- return (u_int32_t *) (greh+sizeof(*greh));
+-}
+-
+-/* get pointer ot gre csum, if present */
+-static inline u_int16_t *gre_csum(struct gre_hdr *greh)
+-{
+- if (!greh->csum)
+- return NULL;
+- return (u_int16_t *) (greh+sizeof(*greh));
+-}
+-
+-#endif /* __KERNEL__ */
+-
+-#endif /* _CONNTRACK_PROTO_GRE_H */
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_conntrack_tftp.h linux.stock/include/linux/netfilter_ipv4/ip_conntrack_tftp.h
+--- linux/include/linux/netfilter_ipv4/ip_conntrack_tftp.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_conntrack_tftp.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,13 +0,0 @@
+-#ifndef _IP_CT_TFTP
+-#define _IP_CT_TFTP
+-
+-#define TFTP_PORT 69
+-
+-struct tftphdr {
+- u_int16_t opcode;
+-};
+-
+-#define TFTP_OPCODE_READ 1
+-#define TFTP_OPCODE_WRITE 2
+-
+-#endif /* _IP_CT_TFTP */
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_conntrack_tuple.h linux.stock/include/linux/netfilter_ipv4/ip_conntrack_tuple.h
+--- linux/include/linux/netfilter_ipv4/ip_conntrack_tuple.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_conntrack_tuple.h 2004-05-09 04:13:03.000000000 -0400
+@@ -14,7 +14,7 @@
+ union ip_conntrack_manip_proto
+ {
+ /* Add other protocols here. */
+- u_int32_t all;
++ u_int16_t all;
+
+ struct {
+ u_int16_t port;
+@@ -25,9 +25,6 @@
+ struct {
+ u_int16_t id;
+ } icmp;
+- struct {
+- u_int32_t key;
+- } gre;
+ };
+
+ /* The manipulable part of the tuple. */
+@@ -47,7 +44,7 @@
+ u_int32_t ip;
+ union {
+ /* Add other protocols here. */
+- u_int64_t all;
++ u_int16_t all;
+
+ struct {
+ u_int16_t port;
+@@ -58,11 +55,6 @@
+ struct {
+ u_int8_t type, code;
+ } icmp;
+- struct {
+- u_int16_t protocol;
+- u_int8_t version;
+- u_int32_t key;
+- } gre;
+ } u;
+
+ /* The protocol. */
+@@ -80,16 +72,10 @@
+ #ifdef __KERNEL__
+
+ #define DUMP_TUPLE(tp) \
+-DEBUGP("tuple %p: %u %u.%u.%u.%u:%u -> %u.%u.%u.%u:%u\n", \
++DEBUGP("tuple %p: %u %u.%u.%u.%u:%hu -> %u.%u.%u.%u:%hu\n", \
+ (tp), (tp)->dst.protonum, \
+- NIPQUAD((tp)->src.ip), ntohl((tp)->src.u.all), \
+- NIPQUAD((tp)->dst.ip), ntohl((tp)->dst.u.all))
+-
+-#define DUMP_TUPLE_RAW(x) \
+- DEBUGP("tuple %p: %u %u.%u.%u.%u:0x%08x -> %u.%u.%u.%u:0x%08x\n",\
+- (x), (x)->dst.protonum, \
+- NIPQUAD((x)->src.ip), ntohl((x)->src.u.all), \
+- NIPQUAD((x)->dst.ip), ntohl((x)->dst.u.all))
++ NIPQUAD((tp)->src.ip), ntohs((tp)->src.u.all), \
++ NIPQUAD((tp)->dst.ip), ntohs((tp)->dst.u.all))
+
+ #define CTINFO2DIR(ctinfo) ((ctinfo) >= IP_CT_IS_REPLY ? IP_CT_DIR_REPLY : IP_CT_DIR_ORIGINAL)
+
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_nat_pptp.h linux.stock/include/linux/netfilter_ipv4/ip_nat_pptp.h
+--- linux/include/linux/netfilter_ipv4/ip_nat_pptp.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_nat_pptp.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,11 +0,0 @@
+-/* PPTP constants and structs */
+-#ifndef _NAT_PPTP_H
+-#define _NAT_PPTP_H
+-
+-/* conntrack private data */
+-struct ip_nat_pptp {
+- u_int16_t pns_call_id; /* NAT'ed PNS call id */
+- u_int16_t pac_call_id; /* NAT'ed PAC call id */
+-};
+-
+-#endif /* _NAT_PPTP_H */
+diff -Nurb linux/include/linux/netfilter_ipv4/ip_pool.h linux.stock/include/linux/netfilter_ipv4/ip_pool.h
+--- linux/include/linux/netfilter_ipv4/ip_pool.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ip_pool.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,64 +0,0 @@
+-#ifndef _IP_POOL_H
+-#define _IP_POOL_H
+-
+-/***************************************************************************/
+-/* 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. */
+-/* */
+-/* This program is distributed in the hope that it will be useful, */
+-/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
+-/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
+-/* GNU General Public License for more details. */
+-/* */
+-/* You should have received a copy of the GNU General Public License */
+-/* along with this program; if not, write to the Free Software */
+-/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA*/
+-/***************************************************************************/
+-
+-/* A sockopt of such quality has hardly ever been seen before on the open
+- * market! This little beauty, hardly ever used: above 64, so it's
+- * traditionally used for firewalling, not touched (even once!) by the
+- * 2.0, 2.2 and 2.4 kernels!
+- *
+- * Comes with its own certificate of authenticity, valid anywhere in the
+- * Free world!
+- *
+- * Rusty, 19.4.2000
+- */
+-#define SO_IP_POOL 81
+-
+-typedef int ip_pool_t; /* pool index */
+-#define IP_POOL_NONE ((ip_pool_t)-1)
+-
+-struct ip_pool_request {
+- int op;
+- ip_pool_t index;
+- u_int32_t addr;
+- u_int32_t addr2;
+-};
+-
+-/* NOTE: I deliberately break the first cut ippool utility. Nobody uses it. */
+-
+-#define IP_POOL_BAD001 0x00000010
+-
+-#define IP_POOL_FLUSH 0x00000011 /* req.index, no arguments */
+-#define IP_POOL_INIT 0x00000012 /* from addr to addr2 incl. */
+-#define IP_POOL_DESTROY 0x00000013 /* req.index, no arguments */
+-#define IP_POOL_ADD_ADDR 0x00000014 /* add addr to pool */
+-#define IP_POOL_DEL_ADDR 0x00000015 /* del addr from pool */
+-#define IP_POOL_HIGH_NR 0x00000016 /* result in req.index */
+-#define IP_POOL_LOOKUP 0x00000017 /* result in addr and addr2 */
+-#define IP_POOL_USAGE 0x00000018 /* result in addr */
+-#define IP_POOL_TEST_ADDR 0x00000019 /* result (0/1) returned */
+-
+-#ifdef __KERNEL__
+-
+-/* NOTE: ip_pool_match() and ip_pool_mod() expect ADDR to be host byte order */
+-extern int ip_pool_match(ip_pool_t pool, u_int32_t addr);
+-extern int ip_pool_mod(ip_pool_t pool, u_int32_t addr, int isdel);
+-
+-#endif
+-
+-#endif /*_IP_POOL_H*/
+diff -Nurb linux/include/linux/netfilter_ipv4/ipt_pool.h linux.stock/include/linux/netfilter_ipv4/ipt_pool.h
+--- linux/include/linux/netfilter_ipv4/ipt_pool.h 2003-07-04 04:12:27.000000000 -0400
++++ linux.stock/include/linux/netfilter_ipv4/ipt_pool.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,25 +0,0 @@
+-#ifndef _IPT_POOL_H
+-#define _IPT_POOL_H
+-
+-#include <linux/netfilter_ipv4/ip_pool.h>
+-
+-#define IPT_POOL_INV_SRC 0x00000001
+-#define IPT_POOL_INV_DST 0x00000002
+-#define IPT_POOL_DEL_SRC 0x00000004
+-#define IPT_POOL_DEL_DST 0x00000008
+-#define IPT_POOL_INV_MOD_SRC 0x00000010
+-#define IPT_POOL_INV_MOD_DST 0x00000020
+-#define IPT_POOL_MOD_SRC_ACCEPT 0x00000040
+-#define IPT_POOL_MOD_DST_ACCEPT 0x00000080
+-#define IPT_POOL_MOD_SRC_DROP 0x00000100
+-#define IPT_POOL_MOD_DST_DROP 0x00000200
+-
+-/* match info */
+-struct ipt_pool_info
+-{
+- ip_pool_t src;
+- ip_pool_t dst;
+- unsigned flags;
+-};
+-
+-#endif /*_IPT_POOL_H*/
+diff -Nurb linux/net/ipv4/netfilter/Config.in linux.stock/net/ipv4/netfilter/Config.in
+--- linux/net/ipv4/netfilter/Config.in 2004-02-19 06:04:35.000000000 -0500
++++ linux.stock/net/ipv4/netfilter/Config.in 2004-05-09 04:13:03.000000000 -0400
+@@ -7,12 +7,7 @@
+ tristate 'Connection tracking (required for masq/NAT)' CONFIG_IP_NF_CONNTRACK
+ if [ "$CONFIG_IP_NF_CONNTRACK" != "n" ]; then
+ dep_tristate ' FTP protocol support' CONFIG_IP_NF_FTP $CONFIG_IP_NF_CONNTRACK
+- dep_tristate ' TFTP protocol support' CONFIG_IP_NF_TFTP $CONFIG_IP_NF_CONNTRACK
+- dep_tristate ' H.323 (netmeeting) support' CONFIG_IP_NF_H323 $CONFIG_IP_NF_CONNTRACK
+ dep_tristate ' IRC protocol support' CONFIG_IP_NF_IRC $CONFIG_IP_NF_CONNTRACK
+- dep_tristate ' MMS protocol support' CONFIG_IP_NF_MMS $CONFIG_IP_NF_CONNTRACK
+- dep_tristate ' GRE protocol support' CONFIG_IP_NF_CT_PROTO_GRE $CONFIG_IP_NF_CONNTRACK
+- dep_tristate ' PPTP protocol support' CONFIG_IP_NF_PPTP $CONFIG_IP_NF_CT_PROTO_GRE
+ fi
+
+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
+@@ -22,19 +17,11 @@
+ if [ "$CONFIG_IP_NF_IPTABLES" != "n" ]; then
+ # The simple matches.
+ dep_tristate ' limit match support' CONFIG_IP_NF_MATCH_LIMIT $CONFIG_IP_NF_IPTABLES
+-
+- dep_tristate ' IP address pool support' CONFIG_IP_NF_POOL $CONFIG_IP_NF_IPTABLES
+- if [ "$CONFIG_IP_NF_POOL" = "y" -o "$CONFIG_IP_NF_POOL" = "m" ]; then
+- bool ' enable statistics on pool usage' CONFIG_IP_POOL_STATISTICS n
+- fi
+-
+ dep_tristate ' MAC address match support' CONFIG_IP_NF_MATCH_MAC $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' Packet type match support' CONFIG_IP_NF_MATCH_PKTTYPE $CONFIG_IP_NF_IPTABLES
+ 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 ' Multiple port with ranges match support' CONFIG_IP_NF_MATCH_MPORT $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 ' ECN match support' CONFIG_IP_NF_MATCH_ECN $CONFIG_IP_NF_IPTABLES
+
+ dep_tristate ' DSCP match support' CONFIG_IP_NF_MATCH_DSCP $CONFIG_IP_NF_IPTABLES
+@@ -52,7 +39,6 @@
+ fi
+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
+ dep_tristate ' Unclean match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_UNCLEAN $CONFIG_IP_NF_IPTABLES
+- dep_tristate ' Webstr match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_WEBSTR $CONFIG_IP_NF_IPTABLES
+ dep_tristate ' Owner match support (EXPERIMENTAL)' CONFIG_IP_NF_MATCH_OWNER $CONFIG_IP_NF_IPTABLES
+ fi
+ # The targets
+@@ -70,29 +56,6 @@
+ define_bool CONFIG_IP_NF_NAT_NEEDED y
+ dep_tristate ' MASQUERADE target support' CONFIG_IP_NF_TARGET_MASQUERADE $CONFIG_IP_NF_NAT
+ dep_tristate ' REDIRECT target support' CONFIG_IP_NF_TARGET_REDIRECT $CONFIG_IP_NF_NAT
+- dep_tristate ' Automatic port forwarding (autofw) target support' CONFIG_IP_NF_AUTOFW $CONFIG_IP_NF_NAT
+- dep_tristate ' TRIGGER target support (port-trigger)' CONFIG_IP_NF_TARGET_TRIGGER $CONFIG_IP_NF_NAT
+- if [ "$CONFIG_IP_NF_H323" = "m" ]; then
+- define_tristate CONFIG_IP_NF_NAT_H323 m
+- else
+- if [ "$CONFIG_IP_NF_H323" = "y" ]; then
+- define_tristate CONFIG_IP_NF_NAT_H323 $CONFIG_IP_NF_NAT
+- fi
+- fi
+- if [ "$CONFIG_IP_NF_PPTP" = "m" ]; then
+- define_tristate CONFIG_IP_NF_NAT_PPTP m
+- else
+- if [ "$CONFIG_IP_NF_PPTP" = "y" ]; then
+- define_tristate CONFIG_IP_NF_NAT_PPTP $CONFIG_IP_NF_NAT
+- fi
+- fi
+- if [ "$CONFIG_IP_NF_CT_PROTO_GRE" = "m" ]; then
+- define_tristate CONFIG_IP_NF_NAT_PROTO_GRE m
+- else
+- if [ "$CONFIG_IP_NF_CT_PROTO_GRE" = "y" ]; then
+- define_tristate CONFIG_IP_NF_NAT_PROTO_GRE $CONFIG_IP_NF_NAT
+- fi
+- fi
+ bool ' NAT of local connections (READ HELP)' CONFIG_IP_NF_NAT_LOCAL
+ if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
+ dep_tristate ' Basic SNMP-ALG support (EXPERIMENTAL)' CONFIG_IP_NF_NAT_SNMP_BASIC $CONFIG_IP_NF_NAT
+@@ -104,13 +67,6 @@
+ define_tristate CONFIG_IP_NF_NAT_IRC $CONFIG_IP_NF_NAT
+ fi
+ fi
+- if [ "$CONFIG_IP_NF_MMS" = "m" ]; then
+- define_tristate CONFIG_IP_NF_NAT_MMS m
+- else
+- if [ "$CONFIG_IP_NF_MMS" = "y" ]; then
+- define_tristate CONFIG_IP_NF_NAT_MMS $CONFIG_IP_NF_NAT
+- fi
+- fi
+ # If they want FTP, set to $CONFIG_IP_NF_NAT (m or y),
+ # or $CONFIG_IP_NF_FTP (m or y), whichever is weaker. Argh.
+ if [ "$CONFIG_IP_NF_FTP" = "m" ]; then
+@@ -120,13 +76,6 @@
+ define_tristate CONFIG_IP_NF_NAT_FTP $CONFIG_IP_NF_NAT
+ fi
+ fi
+- if [ "$CONFIG_IP_NF_TFTP" = "m" ]; then
+- define_tristate CONFIG_IP_NF_NAT_TFTP m
+- else
+- if [ "$CONFIG_IP_NF_TFTP" = "y" ]; then
+- define_tristate CONFIG_IP_NF_NAT_TFTP $CONFIG_IP_NF_NAT
+- fi
+- fi
+ fi
+ fi
+
+diff -Nurb linux/net/ipv4/netfilter/Makefile linux.stock/net/ipv4/netfilter/Makefile
+--- linux/net/ipv4/netfilter/Makefile 2004-02-19 06:04:35.000000000 -0500
++++ linux.stock/net/ipv4/netfilter/Makefile 2004-05-09 04:13:03.000000000 -0400
+@@ -31,48 +31,20 @@
+ # connection tracking
+ obj-$(CONFIG_IP_NF_CONNTRACK) += ip_conntrack.o
+
+-# H.323 support
+-obj-$(CONFIG_IP_NF_H323) += ip_conntrack_h323.o
+-obj-$(CONFIG_IP_NF_NAT_H323) += ip_nat_h323.o
+-ifdef CONFIG_IP_NF_NAT_H323
+- export-objs += ip_conntrack_h323.o
+-endif
+-
+-
+-# connection tracking protocol helpers
+-obj-$(CONFIG_IP_NF_CT_PROTO_GRE) += ip_conntrack_proto_gre.o
+-ifdef CONFIG_IP_NF_CT_PROTO_GRE
+- export-objs += ip_conntrack_proto_gre.o
+-endif
+-
+-# NAT protocol helpers
+-obj-$(CONFIG_IP_NF_NAT_PROTO_GRE) += ip_nat_proto_gre.o
+-
+ # connection tracking helpers
+-obj-$(CONFIG_IP_NF_MMS) += ip_conntrack_mms.o
+-ifdef CONFIG_IP_NF_NAT_MMS
+- export-objs += ip_conntrack_mms.o
+-endif
+-obj-$(CONFIG_IP_NF_PPTP) += ip_conntrack_pptp.o
+-ifdef CONFIG_IP_NF_NAT_PPTP
+- export-objs += ip_conntrack_pptp.o
+-endif
+-obj-$(CONFIG_IP_NF_TFTP) += ip_conntrack_tftp.o
+ obj-$(CONFIG_IP_NF_FTP) += ip_conntrack_ftp.o
+ ifdef CONFIG_IP_NF_NAT_FTP
+ export-objs += ip_conntrack_ftp.o
+ endif
++
+ obj-$(CONFIG_IP_NF_IRC) += ip_conntrack_irc.o
+ ifdef CONFIG_IP_NF_NAT_IRC
+ export-objs += ip_conntrack_irc.o
+ endif
+
+ # NAT helpers
+-obj-$(CONFIG_IP_NF_NAT_PPTP) += ip_nat_pptp.o
+-obj-$(CONFIG_IP_NF_NAT_TFTP) += ip_nat_tftp.o
+ obj-$(CONFIG_IP_NF_NAT_FTP) += ip_nat_ftp.o
+ obj-$(CONFIG_IP_NF_NAT_IRC) += ip_nat_irc.o
+-obj-$(CONFIG_IP_NF_NAT_MMS) += ip_nat_mms.o
+
+ # generic IP tables
+ obj-$(CONFIG_IP_NF_IPTABLES) += ip_tables.o
+@@ -86,19 +58,12 @@
+ obj-$(CONFIG_IP_NF_MATCH_HELPER) += ipt_helper.o
+ obj-$(CONFIG_IP_NF_MATCH_LIMIT) += ipt_limit.o
+ obj-$(CONFIG_IP_NF_MATCH_MARK) += ipt_mark.o
+-obj-$(CONFIG_IP_NF_POOL) += ipt_pool.o ip_pool.o
+ obj-$(CONFIG_IP_NF_MATCH_MAC) += ipt_mac.o
+
+ obj-$(CONFIG_IP_NF_MATCH_PKTTYPE) += ipt_pkttype.o
+ obj-$(CONFIG_IP_NF_MATCH_MULTIPORT) += ipt_multiport.o
+-
+-obj-$(CONFIG_IP_NF_MATCH_MPORT) += ipt_mport.o
+-
+ obj-$(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-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o
+ obj-$(CONFIG_IP_NF_MATCH_DSCP) += ipt_dscp.o
+ obj-$(CONFIG_IP_NF_MATCH_AH_ESP) += ipt_ah.o ipt_esp.o
+@@ -109,7 +74,6 @@
+ obj-$(CONFIG_IP_NF_MATCH_STATE) += ipt_state.o
+ obj-$(CONFIG_IP_NF_MATCH_CONNTRACK) += ipt_conntrack.o
+ obj-$(CONFIG_IP_NF_MATCH_UNCLEAN) += ipt_unclean.o
+-obj-$(CONFIG_IP_NF_MATCH_WEBSTR) += ipt_webstr.o
+ obj-$(CONFIG_IP_NF_MATCH_TCPMSS) += ipt_tcpmss.o
+
+ # targets
+@@ -125,8 +89,6 @@
+ obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
+ obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o
+ obj-$(CONFIG_IP_NF_TARGET_TCPMSS) += ipt_TCPMSS.o
+-obj-$(CONFIG_IP_NF_AUTOFW) += ip_autofw.o
+-obj-$(CONFIG_IP_NF_TARGET_TRIGGER) += ipt_TRIGGER.o
+
+ # generic ARP tables
+ obj-$(CONFIG_IP_NF_ARPTABLES) += arp_tables.o
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_core.c linux.stock/net/ipv4/netfilter/ip_conntrack_core.c
+--- linux/net/ipv4/netfilter/ip_conntrack_core.c 2003-08-12 07:33:45.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_core.c 2004-05-09 04:13:03.000000000 -0400
+@@ -47,7 +47,11 @@
+
+ #define IP_CONNTRACK_VERSION "2.1"
+
++#if 0
++#define DEBUGP printk
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ DECLARE_RWLOCK(ip_conntrack_lock);
+ DECLARE_RWLOCK(ip_conntrack_expect_tuple_lock);
+@@ -62,29 +66,6 @@
+ struct list_head *ip_conntrack_hash;
+ static kmem_cache_t *ip_conntrack_cachep;
+
+-#define SECS * HZ
+-#define MINS * 60 SECS
+-#define HOURS * 60 MINS
+-#define DAYS * 24 HOURS
+-
+-int sysctl_ip_conntrack_tcp_timeouts[10] = {
+- 30 MINS, /* TCP_CONNTRACK_NONE, */
+- 5 DAYS, /* TCP_CONNTRACK_ESTABLISHED, */
+- 2 MINS, /* TCP_CONNTRACK_SYN_SENT, */
+- 60 SECS, /* TCP_CONNTRACK_SYN_RECV, */
+- 2 MINS, /* TCP_CONNTRACK_FIN_WAIT, */
+- 2 MINS, /* TCP_CONNTRACK_TIME_WAIT, */
+- 10 SECS, /* TCP_CONNTRACK_CLOSE, */
+- 60 SECS, /* TCP_CONNTRACK_CLOSE_WAIT, */
+- 30 SECS, /* TCP_CONNTRACK_LAST_ACK, */
+- 2 MINS, /* TCP_CONNTRACK_LISTEN, */
+-};
+-
+-int sysctl_ip_conntrack_udp_timeouts[2] = {
+- 30 SECS, /* UNREPLIED */
+- 180 SECS /* ASSURED */
+-};
+-
+ extern struct ip_conntrack_protocol ip_conntrack_generic_protocol;
+
+ static inline int proto_cmpfn(const struct ip_conntrack_protocol *curr,
+@@ -129,6 +110,9 @@
+ static inline u_int32_t
+ hash_conntrack(const struct ip_conntrack_tuple *tuple)
+ {
++#if 0
++ dump_tuple(tuple);
++#endif
+ /* ntohl because more differences in low bits. */
+ /* To ensure that halves of the same connection don't hash
+ clash, we add the source per-proto again. */
+@@ -160,8 +144,6 @@
+ tuple->dst.ip = iph->daddr;
+ tuple->dst.protonum = iph->protocol;
+
+- tuple->src.u.all = tuple->dst.u.all = 0;
+-
+ ret = protocol->pkt_to_tuple((u_int32_t *)iph + iph->ihl,
+ len - 4*iph->ihl,
+ tuple);
+@@ -177,8 +159,6 @@
+ inverse->dst.ip = orig->src.ip;
+ inverse->dst.protonum = orig->dst.protonum;
+
+- inverse->src.u.all = inverse->dst.u.all = 0;
+-
+ return protocol->invert_tuple(inverse, orig);
+ }
+
+@@ -196,8 +176,8 @@
+ static void
+ destroy_expect(struct ip_conntrack_expect *exp)
+ {
+- DEBUGP("destroy_expect(%p) use=%d\n", exp, atomic_read(&exp->use));
+- IP_NF_ASSERT(atomic_read(&exp->use));
++ DEBUGP("destroy_expect(%p) use=%d\n", exp, atomic_read(exp->use));
++ IP_NF_ASSERT(atomic_read(exp->use));
+ IP_NF_ASSERT(!timer_pending(&exp->timeout));
+
+ kfree(exp);
+@@ -267,11 +247,11 @@
+ static void unexpect_related(struct ip_conntrack_expect *expect)
+ {
+ IP_NF_ASSERT(expect->expectant);
++ IP_NF_ASSERT(expect->expectant->helper);
+ /* if we are supposed to have a timer, but we can't delete
+ * it: race condition. __unexpect_related will
+ * be calledd by timeout function */
+- if (expect->expectant->helper
+- && expect->expectant->helper->timeout
++ if (expect->expectant->helper->timeout
+ && !del_timer(&expect->timeout))
+ return;
+
+@@ -580,6 +560,7 @@
+ if (!h) {
+ /* Locally generated ICMPs will match inverted if they
+ haven't been SNAT'ed yet */
++ /* FIXME: NAT code has to handle half-done double NAT --RR */
+ if (hooknum == NF_IP_LOCAL_OUT)
+ h = ip_conntrack_find_get(&origtuple, NULL);
+
+@@ -725,7 +706,6 @@
+
+ /* If the expectation is dying, then this is a looser. */
+ if (expected
+- && expected->expectant->helper
+ && expected->expectant->helper->timeout
+ && ! del_timer(&expected->timeout))
+ expected = NULL;
+@@ -744,7 +724,6 @@
+ conntrack->master = expected;
+ expected->sibling = conntrack;
+ LIST_DELETE(&ip_conntrack_expect_list, expected);
+- INIT_LIST_HEAD(&expected->list);
+ expected->expectant->expecting--;
+ nf_conntrack_get(&master_ct(conntrack)->infos[0]);
+ }
+@@ -821,9 +800,23 @@
+ int set_reply;
+ int ret;
+
++ /* FIXME: Do this right please. --RR */
+ (*pskb)->nfcache |= NFC_UNKNOWN;
+
+ /* Doesn't cover locally-generated broadcast, so not worth it. */
++#if 0
++ /* Ignore broadcast: no `connection'. */
++ if ((*pskb)->pkt_type == PACKET_BROADCAST) {
++ printk("Broadcast packet!\n");
++ return NF_ACCEPT;
++ } else if (((*pskb)->nh.iph->daddr & htonl(0x000000FF))
++ == htonl(0x000000FF)) {
++ printk("Should bcast: %u.%u.%u.%u->%u.%u.%u.%u (sk=%p, ptype=%u)\n",
++ NIPQUAD((*pskb)->nh.iph->saddr),
++ NIPQUAD((*pskb)->nh.iph->daddr),
++ (*pskb)->sk, (*pskb)->pkt_type);
++ }
++#endif
+
+ /* Previously seen (loopback)? Ignore. Do this before
+ fragment check. */
+@@ -943,8 +936,8 @@
+ * so there is no need to use the tuple lock too */
+
+ DEBUGP("ip_conntrack_expect_related %p\n", related_to);
+- DEBUGP("tuple: "); DUMP_TUPLE_RAW(&expect->tuple);
+- DEBUGP("mask: "); DUMP_TUPLE_RAW(&expect->mask);
++ DEBUGP("tuple: "); DUMP_TUPLE(&expect->tuple);
++ DEBUGP("mask: "); DUMP_TUPLE(&expect->mask);
+
+ old = LIST_FIND(&ip_conntrack_expect_list, resent_expect,
+ struct ip_conntrack_expect *, &expect->tuple,
+@@ -954,8 +947,7 @@
+ pointing into the payload - otherwise we should have to copy
+ the data filled out by the helper over the old one */
+ DEBUGP("expect_related: resent packet\n");
+- if (related_to->helper &&
+- related_to->helper->timeout) {
++ if (related_to->helper->timeout) {
+ if (!del_timer(&old->timeout)) {
+ /* expectation is dying. Fall through */
+ old = NULL;
+@@ -970,32 +962,26 @@
+ WRITE_UNLOCK(&ip_conntrack_lock);
+ return -EEXIST;
+ }
+- } else if (related_to->helper &&
+- related_to->helper->max_expected &&
++ } else if (related_to->helper->max_expected &&
+ related_to->expecting >= related_to->helper->max_expected) {
+ struct list_head *cur_item;
+ /* old == NULL */
+- if (!(related_to->helper->flags &
+- IP_CT_HELPER_F_REUSE_EXPECT)) {
+- WRITE_UNLOCK(&ip_conntrack_lock);
+ if (net_ratelimit())
+ printk(KERN_WARNING
+ "ip_conntrack: max number of expected "
+ "connections %i of %s reached for "
+- "%u.%u.%u.%u->%u.%u.%u.%u\n",
++ "%u.%u.%u.%u->%u.%u.%u.%u%s\n",
+ related_to->helper->max_expected,
+ related_to->helper->name,
+ NIPQUAD(related_to->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip),
+- NIPQUAD(related_to->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip));
++ NIPQUAD(related_to->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip),
++ related_to->helper->flags & IP_CT_HELPER_F_REUSE_EXPECT ?
++ ", reusing" : "");
++ if (!(related_to->helper->flags &
++ IP_CT_HELPER_F_REUSE_EXPECT)) {
++ WRITE_UNLOCK(&ip_conntrack_lock);
+ return -EPERM;
+ }
+- DEBUGP("ip_conntrack: max number of expected "
+- "connections %i of %s reached for "
+- "%u.%u.%u.%u->%u.%u.%u.%u, reusing\n",
+- related_to->helper->max_expected,
+- related_to->helper->name,
+- NIPQUAD(related_to->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip),
+- NIPQUAD(related_to->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip));
+
+ /* choose the the oldest expectation to evict */
+ list_for_each(cur_item, &related_to->sibling_list) {
+@@ -1055,8 +1041,7 @@
+ /* add to global list of expectations */
+ list_prepend(&ip_conntrack_expect_list, &new->list);
+ /* add and start timer if required */
+- if (related_to->helper &&
+- related_to->helper->timeout) {
++ if (related_to->helper->timeout) {
+ init_timer(&new->timeout);
+ new->timeout.data = (unsigned long)new;
+ new->timeout.function = expectation_timed_out;
+@@ -1079,10 +1064,11 @@
+
+ MUST_BE_READ_LOCKED(&ip_conntrack_lock);
+ WRITE_LOCK(&ip_conntrack_expect_tuple_lock);
++
+ DEBUGP("change_expect:\n");
+- DEBUGP("exp tuple: "); DUMP_TUPLE_RAW(&expect->tuple);
+- DEBUGP("exp mask: "); DUMP_TUPLE_RAW(&expect->mask);
+- DEBUGP("newtuple: "); DUMP_TUPLE_RAW(newtuple);
++ DEBUGP("exp tuple: "); DUMP_TUPLE(&expect->tuple);
++ DEBUGP("exp mask: "); DUMP_TUPLE(&expect->mask);
++ DEBUGP("newtuple: "); DUMP_TUPLE(newtuple);
+ if (expect->ct_tuple.dst.protonum == 0) {
+ /* Never seen before */
+ DEBUGP("change expect: never seen before\n");
+@@ -1360,8 +1346,6 @@
+ 0, NULL };
+
+ #define NET_IP_CONNTRACK_MAX 2089
+-#define NET_IP_CONNTRACK_TCP_TIMEOUTS 2090
+-#define NET_IP_CONNTRACK_UDP_TIMEOUTS 2091
+ #define NET_IP_CONNTRACK_MAX_NAME "ip_conntrack_max"
+
+ #ifdef CONFIG_SYSCTL
+@@ -1370,14 +1354,6 @@
+ static ctl_table ip_conntrack_table[] = {
+ { NET_IP_CONNTRACK_MAX, NET_IP_CONNTRACK_MAX_NAME, &ip_conntrack_max,
+ sizeof(ip_conntrack_max), 0644, NULL, proc_dointvec },
+- { NET_IP_CONNTRACK_TCP_TIMEOUTS, "ip_conntrack_tcp_timeouts",
+- &sysctl_ip_conntrack_tcp_timeouts,
+- sizeof(sysctl_ip_conntrack_tcp_timeouts),
+- 0644, NULL, &proc_dointvec_jiffies, &sysctl_jiffies },
+- { NET_IP_CONNTRACK_UDP_TIMEOUTS, "ip_conntrack_udp_timeouts",
+- &sysctl_ip_conntrack_udp_timeouts,
+- sizeof(sysctl_ip_conntrack_udp_timeouts),
+- 0644, NULL, &proc_dointvec_jiffies, &sysctl_jiffies },
+ { 0 }
+ };
+
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_ftp.c linux.stock/net/ipv4/netfilter/ip_conntrack_ftp.c
+--- linux/net/ipv4/netfilter/ip_conntrack_ftp.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_ftp.c 2004-05-09 04:13:03.000000000 -0400
+@@ -24,7 +24,11 @@
+ static int loose = 0;
+ MODULE_PARM(loose, "i");
+
++#if 0
++#define DEBUGP printk
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ static int try_rfc959(const char *, size_t, u_int32_t [], char);
+ static int try_eprt(const char *, size_t, u_int32_t [], char);
+@@ -191,6 +195,16 @@
+ }
+
+ if (strnicmp(data, pattern, plen) != 0) {
++#if 0
++ size_t i;
++
++ DEBUGP("ftp: string mismatch\n");
++ for (i = 0; i < plen; i++) {
++ DEBUGFTP("ftp:char %u `%c'(%u) vs `%c'(%u)\n",
++ i, data[i], data[i],
++ pattern[i], pattern[i]);
++ }
++#endif
+ return 0;
+ }
+
+@@ -214,6 +228,7 @@
+ return 1;
+ }
+
++/* FIXME: This should be in userspace. Later. */
+ static int help(const struct iphdr *iph, size_t len,
+ struct ip_conntrack *ct,
+ enum ip_conntrack_info ctinfo)
+@@ -249,6 +264,7 @@
+ }
+
+ /* Checksum invalid? Ignore. */
++ /* FIXME: Source route IP option packets --RR */
+ if (tcp_v4_check(tcph, tcplen, iph->saddr, iph->daddr,
+ csum_partial((char *)tcph, tcplen, 0))) {
+ DEBUGP("ftp_help: bad csum: %p %u %u.%u.%u.%u %u.%u.%u.%u\n",
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_h323.c linux.stock/net/ipv4/netfilter/ip_conntrack_h323.c
+--- linux/net/ipv4/netfilter/ip_conntrack_h323.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_h323.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,302 +0,0 @@
+-/*
+- * H.323 'brute force' extension for H.323 connection tracking.
+- * Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+- *
+- * Based on ip_masq_h323.c for 2.2 kernels from CoRiTel, Sofia project.
+- * (http://www.coritel.it/projects/sofia/nat/)
+- * Uses Sampsa Ranta's excellent idea on using expectfn to 'bind'
+- * the unregistered helpers to the conntrack entries.
+- */
+-
+-
+-#include <linux/module.h>
+-#include <linux/netfilter.h>
+-#include <linux/ip.h>
+-#include <net/checksum.h>
+-#include <net/tcp.h>
+-
+-#include <linux/netfilter_ipv4/lockhelp.h>
+-#include <linux/netfilter_ipv4/ip_conntrack.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_core.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_tuple.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
+-
+-MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+-MODULE_DESCRIPTION("H.323 'brute force' connection tracking module");
+-MODULE_LICENSE("GPL");
+-
+-DECLARE_LOCK(ip_h323_lock);
+-struct module *ip_conntrack_h323 = THIS_MODULE;
+-
+-#define DEBUGP(format, args...)
+-
+-static int h245_help(const struct iphdr *iph, size_t len,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo)
+-{
+- struct tcphdr *tcph = (void *)iph + iph->ihl * 4;
+- unsigned char *data = (unsigned char *) tcph + tcph->doff * 4;
+- unsigned char *data_limit;
+- u_int32_t tcplen = len - iph->ihl * 4;
+- u_int32_t datalen = tcplen - tcph->doff * 4;
+- int dir = CTINFO2DIR(ctinfo);
+- struct ip_ct_h225_master *info = &ct->help.ct_h225_info;
+- struct ip_conntrack_expect expect, *exp = &expect;
+- struct ip_ct_h225_expect *exp_info = &exp->help.exp_h225_info;
+- u_int16_t data_port;
+- u_int32_t data_ip;
+- unsigned int i;
+-
+- DEBUGP("ct_h245_help: help entered %u.%u.%u.%u:%u->%u.%u.%u.%u:%u\n",
+- NIPQUAD(iph->saddr), ntohs(tcph->source),
+- NIPQUAD(iph->daddr), ntohs(tcph->dest));
+-
+- /* Can't track connections formed before we registered */
+- if (!info)
+- return NF_ACCEPT;
+-
+- /* Until there's been traffic both ways, don't look in packets. */
+- if (ctinfo != IP_CT_ESTABLISHED
+- && ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
+- DEBUGP("ct_h245_help: Conntrackinfo = %u\n", ctinfo);
+- return NF_ACCEPT;
+- }
+-
+- /* Not whole TCP header or too short packet? */
+- if (tcplen < sizeof(struct tcphdr) || tcplen < tcph->doff * 4 + 5) {
+- DEBUGP("ct_h245_help: tcplen = %u\n", (unsigned)tcplen);
+- return NF_ACCEPT;
+- }
+-
+- /* Checksum invalid? Ignore. */
+- if (tcp_v4_check(tcph, tcplen, iph->saddr, iph->daddr,
+- csum_partial((char *)tcph, tcplen, 0))) {
+- DEBUGP("ct_h245_help: bad csum: %p %u %u.%u.%u.%u %u.%u.%u.%u\n",
+- tcph, tcplen, NIPQUAD(iph->saddr),
+- NIPQUAD(iph->daddr));
+- return NF_ACCEPT;
+- }
+-
+- data_limit = (unsigned char *) data + datalen;
+- /* bytes: 0123 45
+- ipadrr port */
+- for (i = 0; data < (data_limit - 5); data++, i++) {
+- memcpy(&data_ip, data, sizeof(u_int32_t));
+- if (data_ip == iph->saddr) {
+- memcpy(&data_port, data + 4, sizeof(u_int16_t));
+- memset(&expect, 0, sizeof(expect));
+- /* update the H.225 info */
+- DEBUGP("ct_h245_help: new RTCP/RTP requested %u.%u.%u.%u:->%u.%u.%u.%u:%u\n",
+- NIPQUAD(ct->tuplehash[!dir].tuple.src.ip),
+- NIPQUAD(iph->saddr), ntohs(data_port));
+- LOCK_BH(&ip_h323_lock);
+- info->is_h225 = H225_PORT + 1;
+- exp_info->port = data_port;
+- exp_info->dir = dir;
+- exp_info->offset = i;
+-
+- exp->seq = ntohl(tcph->seq) + i;
+-
+- exp->tuple = ((struct ip_conntrack_tuple)
+- { { ct->tuplehash[!dir].tuple.src.ip,
+- { 0 } },
+- { data_ip,
+- { data_port },
+- IPPROTO_UDP }});
+- exp->mask = ((struct ip_conntrack_tuple)
+- { { 0xFFFFFFFF, { 0 } },
+- { 0xFFFFFFFF, { 0xFFFF }, 0xFFFF }});
+-
+- exp->expectfn = NULL;
+-
+- /* Ignore failure; should only happen with NAT */
+- ip_conntrack_expect_related(ct, exp);
+-
+- UNLOCK_BH(&ip_h323_lock);
+- }
+- }
+-
+- return NF_ACCEPT;
+-
+-}
+-
+-/* H.245 helper is not registered! */
+-static struct ip_conntrack_helper h245 =
+- { { NULL, NULL },
+- "H.245", /* name */
+- IP_CT_HELPER_F_REUSE_EXPECT, /* flags */
+- NULL, /* module */
+- 8, /* max_ expected */
+- 240, /* timeout */
+- { { 0, { 0 } }, /* tuple */
+- { 0, { 0 }, IPPROTO_TCP } },
+- { { 0, { 0xFFFF } }, /* mask */
+- { 0, { 0 }, 0xFFFF } },
+- h245_help /* helper */
+- };
+-
+-static int h225_expect(struct ip_conntrack *ct)
+-{
+- WRITE_LOCK(&ip_conntrack_lock);
+- ct->helper = &h245;
+- DEBUGP("h225_expect: helper for %p added\n", ct);
+- WRITE_UNLOCK(&ip_conntrack_lock);
+-
+- return NF_ACCEPT; /* unused */
+-}
+-
+-static int h225_help(const struct iphdr *iph, size_t len,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo)
+-{
+- struct tcphdr *tcph = (void *)iph + iph->ihl * 4;
+- unsigned char *data = (unsigned char *) tcph + tcph->doff * 4;
+- unsigned char *data_limit;
+- u_int32_t tcplen = len - iph->ihl * 4;
+- u_int32_t datalen = tcplen - tcph->doff * 4;
+- int dir = CTINFO2DIR(ctinfo);
+- struct ip_ct_h225_master *info = &ct->help.ct_h225_info;
+- struct ip_conntrack_expect expect, *exp = &expect;
+- struct ip_ct_h225_expect *exp_info = &exp->help.exp_h225_info;
+- u_int16_t data_port;
+- u_int32_t data_ip;
+- unsigned int i;
+-
+- DEBUGP("ct_h225_help: help entered %u.%u.%u.%u:%u->%u.%u.%u.%u:%u\n",
+- NIPQUAD(iph->saddr), ntohs(tcph->source),
+- NIPQUAD(iph->daddr), ntohs(tcph->dest));
+-
+- /* Can't track connections formed before we registered */
+- if (!info)
+- return NF_ACCEPT;
+-
+- /* Until there's been traffic both ways, don't look in packets. */
+- if (ctinfo != IP_CT_ESTABLISHED
+- && ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
+- DEBUGP("ct_h225_help: Conntrackinfo = %u\n", ctinfo);
+- return NF_ACCEPT;
+- }
+-
+- /* Not whole TCP header or too short packet? */
+- if (tcplen < sizeof(struct tcphdr) || tcplen < tcph->doff * 4 + 5) {
+- DEBUGP("ct_h225_help: tcplen = %u\n", (unsigned)tcplen);
+- return NF_ACCEPT;
+- }
+-
+- /* Checksum invalid? Ignore. */
+- if (tcp_v4_check(tcph, tcplen, iph->saddr, iph->daddr,
+- csum_partial((char *)tcph, tcplen, 0))) {
+- DEBUGP("ct_h225_help: bad csum: %p %u %u.%u.%u.%u %u.%u.%u.%u\n",
+- tcph, tcplen, NIPQUAD(iph->saddr),
+- NIPQUAD(iph->daddr));
+- return NF_ACCEPT;
+- }
+-
+- data_limit = (unsigned char *) data + datalen;
+- /* bytes: 0123 45
+- ipadrr port */
+- for (i = 0; data < (data_limit - 5); data++, i++) {
+- memcpy(&data_ip, data, sizeof(u_int32_t));
+- if (data_ip == iph->saddr) {
+- memcpy(&data_port, data + 4, sizeof(u_int16_t));
+- if (data_port == tcph->source) {
+- /* Signal address */
+- DEBUGP("ct_h225_help: sourceCallSignalAddress from %u.%u.%u.%u\n",
+- NIPQUAD(iph->saddr));
+- /* Update the H.225 info so that NAT can mangle the address/port
+- even when we have no expected connection! */
+-#ifdef CONFIG_IP_NF_NAT_NEEDED
+- LOCK_BH(&ip_h323_lock);
+- info->dir = dir;
+- info->seq[IP_CT_DIR_ORIGINAL] = ntohl(tcph->seq) + i;
+- info->offset[IP_CT_DIR_ORIGINAL] = i;
+- UNLOCK_BH(&ip_h323_lock);
+-#endif
+- } else {
+- memset(&expect, 0, sizeof(expect));
+-
+- /* update the H.225 info */
+- LOCK_BH(&ip_h323_lock);
+- info->is_h225 = H225_PORT;
+- exp_info->port = data_port;
+- exp_info->dir = dir;
+- exp_info->offset = i;
+-
+- exp->seq = ntohl(tcph->seq) + i;
+-
+- exp->tuple = ((struct ip_conntrack_tuple)
+- { { ct->tuplehash[!dir].tuple.src.ip,
+- { 0 } },
+- { data_ip,
+- { data_port },
+- IPPROTO_TCP }});
+- exp->mask = ((struct ip_conntrack_tuple)
+- { { 0xFFFFFFFF, { 0 } },
+- { 0xFFFFFFFF, { 0xFFFF }, 0xFFFF }});
+-
+- exp->expectfn = h225_expect;
+-
+- /* Ignore failure */
+- ip_conntrack_expect_related(ct, exp);
+-
+- DEBUGP("ct_h225_help: new H.245 requested %u.%u.%u.%u->%u.%u.%u.%u:%u\n",
+- NIPQUAD(ct->tuplehash[!dir].tuple.src.ip),
+- NIPQUAD(iph->saddr), ntohs(data_port));
+-
+- UNLOCK_BH(&ip_h323_lock);
+- }
+-#ifdef CONFIG_IP_NF_NAT_NEEDED
+- } else if (data_ip == iph->daddr) {
+- memcpy(&data_port, data + 4, sizeof(u_int16_t));
+- if (data_port == tcph->dest) {
+- /* Signal address */
+- DEBUGP("ct_h225_help: destCallSignalAddress %u.%u.%u.%u\n",
+- NIPQUAD(iph->daddr));
+- /* Update the H.225 info so that NAT can mangle the address/port
+- even when we have no expected connection! */
+- LOCK_BH(&ip_h323_lock);
+- info->dir = dir;
+- info->seq[IP_CT_DIR_REPLY] = ntohl(tcph->seq) + i;
+- info->offset[IP_CT_DIR_REPLY] = i;
+- UNLOCK_BH(&ip_h323_lock);
+- }
+-#endif
+- }
+- }
+-
+- return NF_ACCEPT;
+-
+-}
+-
+-static struct ip_conntrack_helper h225 =
+- { { NULL, NULL },
+- "H.225", /* name */
+- IP_CT_HELPER_F_REUSE_EXPECT, /* flags */
+- THIS_MODULE, /* module */
+- 2, /* max_expected */
+- 240, /* timeout */
+- { { 0, { __constant_htons(H225_PORT) } }, /* tuple */
+- { 0, { 0 }, IPPROTO_TCP } },
+- { { 0, { 0xFFFF } }, /* mask */
+- { 0, { 0 }, 0xFFFF } },
+- h225_help /* helper */
+- };
+-
+-static int __init init(void)
+-{
+- return ip_conntrack_helper_register(&h225);
+-}
+-
+-static void __exit fini(void)
+-{
+- /* Unregister H.225 helper */
+- ip_conntrack_helper_unregister(&h225);
+-}
+-
+-#ifdef CONFIG_IP_NF_NAT_NEEDED
+-EXPORT_SYMBOL(ip_h323_lock);
+-#endif
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_mms.c linux.stock/net/ipv4/netfilter/ip_conntrack_mms.c
+--- linux/net/ipv4/netfilter/ip_conntrack_mms.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_mms.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,292 +0,0 @@
+-/* MMS extension for IP connection tracking
+- * (C) 2002 by Filip Sneppe <filip.sneppe@cronos.be>
+- * based on ip_conntrack_ftp.c and ip_conntrack_irc.c
+- *
+- * ip_conntrack_mms.c v0.3 2002-09-22
+- *
+- * 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.
+- *
+- * Module load syntax:
+- * insmod ip_conntrack_mms.o ports=port1,port2,...port<MAX_PORTS>
+- *
+- * Please give the ports of all MMS servers You wish to connect to.
+- * If you don't specify ports, the default will be TCP port 1755.
+- *
+- * More info on MMS protocol, firewalls and NAT:
+- * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/MMSFirewall.asp
+- * http://www.microsoft.com/windows/windowsmedia/serve/firewall.asp
+- *
+- * The SDP project people are reverse-engineering MMS:
+- * http://get.to/sdp
+- */
+-
+-#include <linux/config.h>
+-#include <linux/module.h>
+-#include <linux/netfilter.h>
+-#include <linux/ip.h>
+-#include <linux/ctype.h>
+-#include <net/checksum.h>
+-#include <net/tcp.h>
+-
+-#include <linux/netfilter_ipv4/lockhelp.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_mms.h>
+-
+-DECLARE_LOCK(ip_mms_lock);
+-struct module *ip_conntrack_mms = THIS_MODULE;
+-
+-#define MAX_PORTS 8
+-static int ports[MAX_PORTS];
+-static int ports_c;
+-#ifdef MODULE_PARM
+-MODULE_PARM(ports, "1-" __MODULE_STRING(MAX_PORTS) "i");
+-#endif
+-
+-#define DEBUGP(format, args...)
+-
+-#ifdef CONFIG_IP_NF_NAT_NEEDED
+-EXPORT_SYMBOL(ip_mms_lock);
+-#endif
+-
+-MODULE_AUTHOR("Filip Sneppe <filip.sneppe@cronos.be>");
+-MODULE_DESCRIPTION("Microsoft Windows Media Services (MMS) connection tracking module");
+-MODULE_LICENSE("GPL");
+-
+-/* #define isdigit(c) (c >= '0' && c <= '9') */
+-
+-/* copied from drivers/usb/serial/io_edgeport.c - not perfect but will do the trick */
+-static void unicode_to_ascii (char *string, short *unicode, int unicode_size)
+-{
+- int i;
+- for (i = 0; i < unicode_size; ++i) {
+- string[i] = (char)(unicode[i]);
+- }
+- string[unicode_size] = 0x00;
+-}
+-
+-__inline static int atoi(char *s)
+-{
+- int i=0;
+- while (isdigit(*s)) {
+- i = i*10 + *(s++) - '0';
+- }
+- return i;
+-}
+-
+-/* convert ip address string like "192.168.0.10" to unsigned int */
+-__inline static u_int32_t asciiiptoi(char *s)
+-{
+- unsigned int i, j, k;
+-
+- for(i=k=0; k<3; ++k, ++s, i<<=8) {
+- i+=atoi(s);
+- for(j=0; (*(++s) != '.') && (j<3); ++j)
+- ;
+- }
+- i+=atoi(s);
+- return ntohl(i);
+-}
+-
+-int parse_mms(const char *data,
+- const unsigned int datalen,
+- u_int32_t *mms_ip,
+- u_int16_t *mms_proto,
+- u_int16_t *mms_port,
+- char **mms_string_b,
+- char **mms_string_e,
+- char **mms_padding_e)
+-{
+- int unicode_size, i;
+- char tempstring[28]; /* "\\255.255.255.255\UDP\65535" */
+- char getlengthstring[28];
+-
+- for(unicode_size=0;
+- (char) *(data+(MMS_SRV_UNICODE_STRING_OFFSET+unicode_size*2)) != (char)0;
+- unicode_size++)
+- if ((unicode_size == 28) || (MMS_SRV_UNICODE_STRING_OFFSET+unicode_size*2 >= datalen))
+- return -1; /* out of bounds - incomplete packet */
+-
+- unicode_to_ascii(tempstring, (short *)(data+MMS_SRV_UNICODE_STRING_OFFSET), unicode_size);
+- DEBUGP("ip_conntrack_mms: offset 60: %s\n", (const char *)(tempstring));
+-
+- /* IP address ? */
+- *mms_ip = asciiiptoi(tempstring+2);
+-
+- i=sprintf(getlengthstring, "%u.%u.%u.%u", HIPQUAD(*mms_ip));
+-
+- /* protocol ? */
+- if(strncmp(tempstring+3+i, "TCP", 3)==0)
+- *mms_proto = IPPROTO_TCP;
+- else if(strncmp(tempstring+3+i, "UDP", 3)==0)
+- *mms_proto = IPPROTO_UDP;
+-
+- /* port ? */
+- *mms_port = atoi(tempstring+7+i);
+-
+- /* we store a pointer to the beginning of the "\\a.b.c.d\proto\port"
+- unicode string, one to the end of the string, and one to the end
+- of the packet, since we must keep track of the number of bytes
+- between end of the unicode string and the end of packet (padding) */
+- *mms_string_b = (char *)(data + MMS_SRV_UNICODE_STRING_OFFSET);
+- *mms_string_e = (char *)(data + MMS_SRV_UNICODE_STRING_OFFSET + unicode_size * 2);
+- *mms_padding_e = (char *)(data + datalen); /* looks funny, doesn't it */
+- return 0;
+-}
+-
+-
+-static int help(const struct iphdr *iph, size_t len,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo)
+-{
+- /* tcplen not negative guaranteed by ip_conntrack_tcp.c */
+- struct tcphdr *tcph = (void *)iph + iph->ihl * 4;
+- const char *data = (const char *)tcph + tcph->doff * 4;
+- unsigned int tcplen = len - iph->ihl * 4;
+- unsigned int datalen = tcplen - tcph->doff * 4;
+- int dir = CTINFO2DIR(ctinfo);
+- struct ip_conntrack_expect expect, *exp = &expect;
+- struct ip_ct_mms_expect *exp_mms_info = &exp->help.exp_mms_info;
+-
+- u_int32_t mms_ip;
+- u_int16_t mms_proto;
+- char mms_proto_string[8];
+- u_int16_t mms_port;
+- char *mms_string_b, *mms_string_e, *mms_padding_e;
+-
+- /* Until there's been traffic both ways, don't look in packets. */
+- if (ctinfo != IP_CT_ESTABLISHED
+- && ctinfo != IP_CT_ESTABLISHED+IP_CT_IS_REPLY) {
+- DEBUGP("ip_conntrack_mms: Conntrackinfo = %u\n", ctinfo);
+- return NF_ACCEPT;
+- }
+-
+- /* Not whole TCP header? */
+- if (tcplen < sizeof(struct tcphdr) || tcplen < tcph->doff*4) {
+- DEBUGP("ip_conntrack_mms: tcplen = %u\n", (unsigned)tcplen);
+- return NF_ACCEPT;
+- }
+-
+- /* Checksum invalid? Ignore. */
+- if (tcp_v4_check(tcph, tcplen, iph->saddr, iph->daddr,
+- csum_partial((char *)tcph, tcplen, 0))) {
+- DEBUGP("mms_help: bad csum: %p %u %u.%u.%u.%u %u.%u.%u.%u\n",
+- tcph, tcplen, NIPQUAD(iph->saddr),
+- NIPQUAD(iph->daddr));
+- return NF_ACCEPT;
+- }
+-
+- /* Only look at packets with 0x00030002/196610 on bytes 36->39 of TCP payload */
+- if( (MMS_SRV_MSG_OFFSET < datalen) &&
+- ((*(u32 *)(data+MMS_SRV_MSG_OFFSET)) == MMS_SRV_MSG_ID)) {
+- DEBUGP("ip_conntrack_mms: offset 37: %u %u %u %u, datalen:%u\n",
+- (u8)*(data+36), (u8)*(data+37),
+- (u8)*(data+38), (u8)*(data+39),
+- datalen);
+- if(parse_mms(data, datalen, &mms_ip, &mms_proto, &mms_port,
+- &mms_string_b, &mms_string_e, &mms_padding_e))
+- if(net_ratelimit())
+- printk(KERN_WARNING
+- "ip_conntrack_mms: Unable to parse data payload\n");
+-
+- memset(&expect, 0, sizeof(expect));
+-
+- sprintf(mms_proto_string, "(%u)", mms_proto);
+- DEBUGP("ip_conntrack_mms: adding %s expectation %u.%u.%u.%u -> %u.%u.%u.%u:%u\n",
+- mms_proto == IPPROTO_TCP ? "TCP"
+- : mms_proto == IPPROTO_UDP ? "UDP":mms_proto_string,
+- NIPQUAD(ct->tuplehash[!dir].tuple.src.ip),
+- NIPQUAD(mms_ip),
+- mms_port);
+-
+- /* it's possible that the client will just ask the server to tunnel
+- the stream over the same TCP session (from port 1755): there's
+- shouldn't be a need to add an expectation in that case, but it
+- makes NAT packet mangling so much easier */
+- LOCK_BH(&ip_mms_lock);
+-
+- DEBUGP("ip_conntrack_mms: tcph->seq = %u\n", tcph->seq);
+-
+- exp->seq = ntohl(tcph->seq) + (mms_string_b - data);
+- exp_mms_info->len = (mms_string_e - mms_string_b);
+- exp_mms_info->padding = (mms_padding_e - mms_string_e);
+- exp_mms_info->port = mms_port;
+-
+- DEBUGP("ip_conntrack_mms: wrote info seq=%u (ofs=%u), len=%d, padding=%u\n",
+- exp->seq, (mms_string_e - data), exp_mms_info->len, exp_mms_info->padding);
+-
+- exp->tuple = ((struct ip_conntrack_tuple)
+- { { ct->tuplehash[!dir].tuple.src.ip, { 0 } },
+- { mms_ip,
+- { (__u16) ntohs(mms_port) },
+- mms_proto } }
+- );
+- exp->mask = ((struct ip_conntrack_tuple)
+- { { 0xFFFFFFFF, { 0 } },
+- { 0xFFFFFFFF, { 0xFFFF }, 0xFFFF }});
+- exp->expectfn = NULL;
+- ip_conntrack_expect_related(ct, &expect);
+- UNLOCK_BH(&ip_mms_lock);
+- }
+-
+- return NF_ACCEPT;
+-}
+-
+-static struct ip_conntrack_helper mms[MAX_PORTS];
+-static char mms_names[MAX_PORTS][10];
+-
+-/* Not __exit: called from init() */
+-static void fini(void)
+-{
+- int i;
+- for (i = 0; (i < MAX_PORTS) && ports[i]; i++) {
+- DEBUGP("ip_conntrack_mms: unregistering helper for port %d\n",
+- ports[i]);
+- ip_conntrack_helper_unregister(&mms[i]);
+- }
+-}
+-
+-static int __init init(void)
+-{
+- int i, ret;
+- char *tmpname;
+-
+- if (ports[0] == 0)
+- ports[0] = MMS_PORT;
+-
+- for (i = 0; (i < MAX_PORTS) && ports[i]; i++) {
+- memset(&mms[i], 0, sizeof(struct ip_conntrack_helper));
+- mms[i].tuple.src.u.tcp.port = htons(ports[i]);
+- mms[i].tuple.dst.protonum = IPPROTO_TCP;
+- mms[i].mask.src.u.tcp.port = 0xFFFF;
+- mms[i].mask.dst.protonum = 0xFFFF;
+- mms[i].max_expected = 1;
+- mms[i].timeout = 0;
+- mms[i].flags = IP_CT_HELPER_F_REUSE_EXPECT;
+- mms[i].me = THIS_MODULE;
+- mms[i].help = help;
+-
+- tmpname = &mms_names[i][0];
+- if (ports[i] == MMS_PORT)
+- sprintf(tmpname, "mms");
+- else
+- sprintf(tmpname, "mms-%d", ports[i]);
+- mms[i].name = tmpname;
+-
+- DEBUGP("ip_conntrack_mms: registering helper for port %d\n",
+- ports[i]);
+- ret = ip_conntrack_helper_register(&mms[i]);
+-
+- if (ret) {
+- fini();
+- return ret;
+- }
+- ports_c++;
+- }
+- return 0;
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_pptp.c linux.stock/net/ipv4/netfilter/ip_conntrack_pptp.c
+--- linux/net/ipv4/netfilter/ip_conntrack_pptp.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_pptp.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,531 +0,0 @@
+-/*
+- * ip_conntrack_pptp.c - Version 1.11
+- *
+- * Connection tracking support for PPTP (Point to Point Tunneling Protocol).
+- * PPTP is a a protocol for creating virtual private networks.
+- * It is a specification defined by Microsoft and some vendors
+- * working with Microsoft. PPTP is built on top of a modified
+- * version of the Internet Generic Routing Encapsulation Protocol.
+- * GRE is defined in RFC 1701 and RFC 1702. Documentation of
+- * PPTP can be found in RFC 2637
+- *
+- * (C) 2000-2002 by Harald Welte <laforge@gnumonks.org>,
+- *
+- * Development of this code funded by Astaro AG (http://www.astaro.com/)
+- *
+- * Limitations:
+- * - We blindly assume that control connections are always
+- * established in PNS->PAC direction. This is a violation
+- * of RFFC2673
+- *
+- * TODO: - finish support for multiple calls within one session
+- * (needs expect reservations in newnat)
+- * - testing of incoming PPTP calls
+- */
+-
+-#include <linux/config.h>
+-#include <linux/module.h>
+-#include <linux/netfilter.h>
+-#include <linux/ip.h>
+-#include <net/checksum.h>
+-#include <net/tcp.h>
+-
+-#include <linux/netfilter_ipv4/lockhelp.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
+-
+-MODULE_LICENSE("GPL");
+-MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
+-MODULE_DESCRIPTION("Netfilter connection tracking helper module for PPTP");
+-
+-DECLARE_LOCK(ip_pptp_lock);
+-
+-#define DEBUGP(format, args...)
+-
+-#define SECS *HZ
+-#define MINS * 60 SECS
+-#define HOURS * 60 MINS
+-#define DAYS * 24 HOURS
+-
+-#define PPTP_GRE_TIMEOUT (10 MINS)
+-#define PPTP_GRE_STREAM_TIMEOUT (5 DAYS)
+-
+-static int pptp_expectfn(struct ip_conntrack *ct)
+-{
+- struct ip_conntrack_expect *exp, *other_exp;
+- struct ip_conntrack *master;
+-
+- DEBUGP("increasing timeouts\n");
+- /* increase timeout of GRE data channel conntrack entry */
+- ct->proto.gre.timeout = PPTP_GRE_TIMEOUT;
+- ct->proto.gre.stream_timeout = PPTP_GRE_STREAM_TIMEOUT;
+-
+- master = master_ct(ct);
+- if (!master) {
+- DEBUGP(" no master!!!\n");
+- return 0;
+- }
+-
+- DEBUGP("completing tuples with ct info\n");
+- /* we can do this, since we're unconfirmed */
+- if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u.gre.key ==
+- htonl(master->help.ct_pptp_info.pac_call_id)) {
+- /* assume PNS->PAC */
+- ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.gre.key =
+- htonl(master->help.ct_pptp_info.pns_call_id);
+- ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.gre.key =
+- htonl(master->help.ct_pptp_info.pns_call_id);
+- } else {
+- /* assume PAC->PNS */
+- ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.gre.key =
+- htonl(master->help.ct_pptp_info.pac_call_id);
+- ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.gre.key =
+- htonl(master->help.ct_pptp_info.pns_call_id);
+- }
+-
+- return 0;
+-}
+-
+-/* timeout GRE data connections */
+-static int pptp_timeout_related(struct ip_conntrack *ct)
+-{
+- struct list_head *cur_item;
+- struct ip_conntrack_expect *exp;
+-
+- list_for_each(cur_item, &ct->sibling_list) {
+- exp = list_entry(cur_item, struct ip_conntrack_expect,
+- expected_list);
+-
+- if (!exp->sibling)
+- continue;
+-
+- DEBUGP("setting timeout of conntrack %p to 0\n",
+- exp->sibling);
+- exp->sibling->proto.gre.timeout = 0;
+- exp->sibling->proto.gre.stream_timeout = 0;
+- ip_ct_refresh(exp->sibling, 0);
+- }
+-
+- return 0;
+-}
+-
+-/* expect GRE connection in PNS->PAC direction */
+-static inline int
+-exp_gre(struct ip_conntrack *master,
+- u_int32_t seq,
+- u_int16_t callid,
+- u_int16_t peer_callid)
+-{
+- struct ip_conntrack_expect exp;
+- struct ip_conntrack_tuple inv_tuple;
+-
+- memset(&exp, 0, sizeof(exp));
+- /* tuple in original direction, PAC->PNS */
+- exp.tuple.src.ip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip;
+- exp.tuple.src.u.gre.key = htonl(ntohs(peer_callid));
+- exp.tuple.dst.ip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip;
+- exp.tuple.dst.u.gre.key = htonl(ntohs(callid));
+- exp.tuple.dst.u.gre.protocol = __constant_htons(GRE_PROTOCOL_PPTP);
+- exp.tuple.dst.u.gre.version = GRE_VERSION_PPTP;
+- exp.tuple.dst.protonum = IPPROTO_GRE;
+-
+- exp.mask.src.ip = 0xffffffff;
+- exp.mask.src.u.all = 0;
+- exp.mask.dst.u.all = 0;
+- exp.mask.dst.u.gre.key = 0xffffffff;
+- exp.mask.dst.u.gre.version = 0xff;
+- exp.mask.dst.u.gre.protocol = 0xffff;
+- exp.mask.dst.ip = 0xffffffff;
+- exp.mask.dst.protonum = 0xffff;
+-
+- exp.seq = seq;
+- exp.expectfn = pptp_expectfn;
+-
+- exp.help.exp_pptp_info.pac_call_id = ntohs(callid);
+- exp.help.exp_pptp_info.pns_call_id = ntohs(peer_callid);
+-
+- DEBUGP("calling expect_related ");
+- DUMP_TUPLE_RAW(&exp.tuple);
+-
+- /* Add GRE keymap entries */
+- ip_ct_gre_keymap_add(&exp, &exp.tuple, 0);
+- invert_tuplepr(&inv_tuple, &exp.tuple);
+- ip_ct_gre_keymap_add(&exp, &inv_tuple, 1);
+-
+- ip_conntrack_expect_related(master, &exp);
+-
+- return 0;
+-}
+-
+-static inline int
+-pptp_inbound_pkt(struct tcphdr *tcph,
+- struct pptp_pkt_hdr *pptph,
+- size_t datalen,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo)
+-{
+- struct PptpControlHeader *ctlh;
+- union pptp_ctrl_union pptpReq;
+-
+- struct ip_ct_pptp_master *info = &ct->help.ct_pptp_info;
+- u_int16_t msg, *cid, *pcid;
+- u_int32_t seq;
+-
+- ctlh = (struct PptpControlHeader *)
+- ((char *) pptph + sizeof(struct pptp_pkt_hdr));
+- pptpReq.rawreq = (void *)
+- ((char *) ctlh + sizeof(struct PptpControlHeader));
+-
+- msg = ntohs(ctlh->messageType);
+- DEBUGP("inbound control message %s\n", strMName[msg]);
+-
+- switch (msg) {
+- case PPTP_START_SESSION_REPLY:
+- /* server confirms new control session */
+- if (info->sstate < PPTP_SESSION_REQUESTED) {
+- DEBUGP("%s without START_SESS_REQUEST\n",
+- strMName[msg]);
+- break;
+- }
+- if (pptpReq.srep->resultCode == PPTP_START_OK)
+- info->sstate = PPTP_SESSION_CONFIRMED;
+- else
+- info->sstate = PPTP_SESSION_ERROR;
+- break;
+-
+- case PPTP_STOP_SESSION_REPLY:
+- /* server confirms end of control session */
+- if (info->sstate > PPTP_SESSION_STOPREQ) {
+- DEBUGP("%s without STOP_SESS_REQUEST\n",
+- strMName[msg]);
+- break;
+- }
+- if (pptpReq.strep->resultCode == PPTP_STOP_OK)
+- info->sstate = PPTP_SESSION_NONE;
+- else
+- info->sstate = PPTP_SESSION_ERROR;
+- break;
+-
+- case PPTP_OUT_CALL_REPLY:
+- /* server accepted call, we now expect GRE frames */
+- if (info->sstate != PPTP_SESSION_CONFIRMED) {
+- DEBUGP("%s but no session\n", strMName[msg]);
+- break;
+- }
+- if (info->cstate != PPTP_CALL_OUT_REQ &&
+- info->cstate != PPTP_CALL_OUT_CONF) {
+- DEBUGP("%s without OUTCALL_REQ\n", strMName[msg]);
+- break;
+- }
+- if (pptpReq.ocack->resultCode != PPTP_OUTCALL_CONNECT) {
+- info->cstate = PPTP_CALL_NONE;
+- break;
+- }
+-
+- cid = &pptpReq.ocack->callID;
+- pcid = &pptpReq.ocack->peersCallID;
+-
+- info->pac_call_id = ntohs(*cid);
+-
+- if (htons(info->pns_call_id) != *pcid) {
+- DEBUGP("%s for unknown callid %u\n",
+- strMName[msg], ntohs(*pcid));
+- break;
+- }
+-
+- DEBUGP("%s, CID=%X, PCID=%X\n", strMName[msg],
+- ntohs(*cid), ntohs(*pcid));
+-
+- info->cstate = PPTP_CALL_OUT_CONF;
+-
+- seq = ntohl(tcph->seq) + ((void *)pcid - (void *)pptph);
+- exp_gre(ct, seq, *cid, *pcid);
+- break;
+-
+- case PPTP_IN_CALL_REQUEST:
+- /* server tells us about incoming call request */
+- if (info->sstate != PPTP_SESSION_CONFIRMED) {
+- DEBUGP("%s but no session\n", strMName[msg]);
+- break;
+- }
+- pcid = &pptpReq.icack->peersCallID;
+- DEBUGP("%s, PCID=%X\n", strMName[msg], ntohs(*pcid));
+- info->cstate = PPTP_CALL_IN_REQ;
+- info->pac_call_id= ntohs(*pcid);
+- break;
+-
+- case PPTP_IN_CALL_CONNECT:
+- /* server tells us about incoming call established */
+- if (info->sstate != PPTP_SESSION_CONFIRMED) {
+- DEBUGP("%s but no session\n", strMName[msg]);
+- break;
+- }
+- if (info->sstate != PPTP_CALL_IN_REP
+- && info->sstate != PPTP_CALL_IN_CONF) {
+- DEBUGP("%s but never sent IN_CALL_REPLY\n",
+- strMName[msg]);
+- break;
+- }
+-
+- pcid = &pptpReq.iccon->peersCallID;
+- cid = &info->pac_call_id;
+-
+- if (info->pns_call_id != ntohs(*pcid)) {
+- DEBUGP("%s for unknown CallID %u\n",
+- strMName[msg], ntohs(*cid));
+- break;
+- }
+-
+- DEBUGP("%s, PCID=%X\n", strMName[msg], ntohs(*pcid));
+- info->cstate = PPTP_CALL_IN_CONF;
+-
+- /* we expect a GRE connection from PAC to PNS */
+- seq = ntohl(tcph->seq) + ((void *)pcid - (void *)pptph);
+- exp_gre(ct, seq, *cid, *pcid);
+-
+- break;
+-
+- case PPTP_CALL_DISCONNECT_NOTIFY:
+- /* server confirms disconnect */
+- cid = &pptpReq.disc->callID;
+- DEBUGP("%s, CID=%X\n", strMName[msg], ntohs(*cid));
+- info->cstate = PPTP_CALL_NONE;
+-
+- /* untrack this call id, unexpect GRE packets */
+- pptp_timeout_related(ct);
+- /* NEWNAT: look up exp for call id and unexpct_related */
+- break;
+-
+- case PPTP_WAN_ERROR_NOTIFY:
+- break;
+-
+- case PPTP_ECHO_REQUEST:
+- case PPTP_ECHO_REPLY:
+- /* I don't have to explain these ;) */
+- break;
+- default:
+- DEBUGP("invalid %s (TY=%d)\n", (msg <= PPTP_MSG_MAX)
+- ? strMName[msg]:strMName[0], msg);
+- break;
+- }
+-
+- return NF_ACCEPT;
+-
+-}
+-
+-static inline int
+-pptp_outbound_pkt(struct tcphdr *tcph,
+- struct pptp_pkt_hdr *pptph,
+- size_t datalen,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo)
+-{
+- struct PptpControlHeader *ctlh;
+- union pptp_ctrl_union pptpReq;
+- struct ip_ct_pptp_master *info = &ct->help.ct_pptp_info;
+- u_int16_t msg, *cid, *pcid;
+-
+- ctlh = (struct PptpControlHeader *) ((void *) pptph + sizeof(*pptph));
+- pptpReq.rawreq = (void *) ((void *) ctlh + sizeof(*ctlh));
+-
+- msg = ntohs(ctlh->messageType);
+- DEBUGP("outbound control message %s\n", strMName[msg]);
+-
+- switch (msg) {
+- case PPTP_START_SESSION_REQUEST:
+- /* client requests for new control session */
+- if (info->sstate != PPTP_SESSION_NONE) {
+- DEBUGP("%s but we already have one",
+- strMName[msg]);
+- }
+- info->sstate = PPTP_SESSION_REQUESTED;
+- break;
+- case PPTP_STOP_SESSION_REQUEST:
+- /* client requests end of control session */
+- info->sstate = PPTP_SESSION_STOPREQ;
+- break;
+-
+- case PPTP_OUT_CALL_REQUEST:
+- /* client initiating connection to server */
+- if (info->sstate != PPTP_SESSION_CONFIRMED) {
+- DEBUGP("%s but no session\n",
+- strMName[msg]);
+- break;
+- }
+- info->cstate = PPTP_CALL_OUT_REQ;
+- /* track PNS call id */
+- cid = &pptpReq.ocreq->callID;
+- DEBUGP("%s, CID=%X\n", strMName[msg], ntohs(*cid));
+- info->pns_call_id = ntohs(*cid);
+- break;
+- case PPTP_IN_CALL_REPLY:
+- /* client answers incoming call */
+- if (info->cstate != PPTP_CALL_IN_REQ
+- && info->cstate != PPTP_CALL_IN_REP) {
+- DEBUGP("%s without incall_req\n",
+- strMName[msg]);
+- break;
+- }
+- if (pptpReq.icack->resultCode != PPTP_INCALL_ACCEPT) {
+- info->cstate = PPTP_CALL_NONE;
+- break;
+- }
+- pcid = &pptpReq.icack->peersCallID;
+- if (info->pac_call_id != ntohs(*pcid)) {
+- DEBUGP("%s for unknown call %u\n",
+- strMName[msg], ntohs(*pcid));
+- break;
+- }
+- DEBUGP("%s, CID=%X\n", strMName[msg], ntohs(*pcid));
+- /* part two of the three-way handshake */
+- info->cstate = PPTP_CALL_IN_REP;
+- info->pns_call_id = ntohs(pptpReq.icack->callID);
+- break;
+-
+- case PPTP_CALL_CLEAR_REQUEST:
+- /* client requests hangup of call */
+- if (info->sstate != PPTP_SESSION_CONFIRMED) {
+- DEBUGP("CLEAR_CALL but no session\n");
+- break;
+- }
+- /* FUTURE: iterate over all calls and check if
+- * call ID is valid. We don't do this without newnat,
+- * because we only know about last call */
+- info->cstate = PPTP_CALL_CLEAR_REQ;
+- break;
+- case PPTP_SET_LINK_INFO:
+- break;
+- case PPTP_ECHO_REQUEST:
+- case PPTP_ECHO_REPLY:
+- /* I don't have to explain these ;) */
+- break;
+- default:
+- DEBUGP("invalid %s (TY=%d)\n", (msg <= PPTP_MSG_MAX)?
+- strMName[msg]:strMName[0], msg);
+- /* unknown: no need to create GRE masq table entry */
+- break;
+- }
+-
+- return NF_ACCEPT;
+-}
+-
+-
+-/* track caller id inside control connection, call expect_related */
+-static int
+-conntrack_pptp_help(const struct iphdr *iph, size_t len,
+- struct ip_conntrack *ct, enum ip_conntrack_info ctinfo)
+-
+-{
+- struct pptp_pkt_hdr *pptph;
+-
+- struct tcphdr *tcph = (void *) iph + iph->ihl * 4;
+- u_int32_t tcplen = len - iph->ihl * 4;
+- u_int32_t datalen = tcplen - tcph->doff * 4;
+- void *datalimit;
+- int dir = CTINFO2DIR(ctinfo);
+- struct ip_ct_pptp_master *info = &ct->help.ct_pptp_info;
+-
+- int oldsstate, oldcstate;
+- int ret;
+-
+- /* don't do any tracking before tcp handshake complete */
+- if (ctinfo != IP_CT_ESTABLISHED
+- && ctinfo != IP_CT_ESTABLISHED+IP_CT_IS_REPLY) {
+- DEBUGP("ctinfo = %u, skipping\n", ctinfo);
+- return NF_ACCEPT;
+- }
+-
+- /* not a complete TCP header? */
+- if (tcplen < sizeof(struct tcphdr) || tcplen < tcph->doff * 4) {
+- DEBUGP("tcplen = %u\n", tcplen);
+- return NF_ACCEPT;
+- }
+-
+- /* checksum invalid? */
+- if (tcp_v4_check(tcph, tcplen, iph->saddr, iph->daddr,
+- csum_partial((char *) tcph, tcplen, 0))) {
+- printk(KERN_NOTICE __FILE__ ": bad csum\n");
+-// return NF_ACCEPT;
+- }
+-
+- if (tcph->fin || tcph->rst) {
+- DEBUGP("RST/FIN received, timeouting GRE\n");
+- /* can't do this after real newnat */
+- info->cstate = PPTP_CALL_NONE;
+-
+- /* untrack this call id, unexpect GRE packets */
+- pptp_timeout_related(ct);
+- /* no need to call unexpect_related since master conn
+- * dies anyway */
+- }
+-
+-
+- pptph = (struct pptp_pkt_hdr *) ((void *) tcph + tcph->doff * 4);
+- datalimit = (void *) pptph + datalen;
+-
+- /* not a full pptp packet header? */
+- if ((void *) pptph+sizeof(*pptph) >= datalimit) {
+- DEBUGP("no full PPTP header, can't track\n");
+- return NF_ACCEPT;
+- }
+-
+- /* if it's not a control message we can't do anything with it */
+- if (ntohs(pptph->packetType) != PPTP_PACKET_CONTROL ||
+- ntohl(pptph->magicCookie) != PPTP_MAGIC_COOKIE) {
+- DEBUGP("not a control packet\n");
+- return NF_ACCEPT;
+- }
+-
+- oldsstate = info->sstate;
+- oldcstate = info->cstate;
+-
+- LOCK_BH(&ip_pptp_lock);
+-
+- if (dir == IP_CT_DIR_ORIGINAL)
+- /* client -> server (PNS -> PAC) */
+- ret = pptp_outbound_pkt(tcph, pptph, datalen, ct, ctinfo);
+- else
+- /* server -> client (PAC -> PNS) */
+- ret = pptp_inbound_pkt(tcph, pptph, datalen, ct, ctinfo);
+- DEBUGP("sstate: %d->%d, cstate: %d->%d\n",
+- oldsstate, info->sstate, oldcstate, info->cstate);
+- UNLOCK_BH(&ip_pptp_lock);
+-
+- return ret;
+-}
+-
+-/* control protocol helper */
+-static struct ip_conntrack_helper pptp = {
+- { NULL, NULL },
+- "pptp", IP_CT_HELPER_F_REUSE_EXPECT, THIS_MODULE, 2, 0,
+- { { 0, { tcp: { port: __constant_htons(PPTP_CONTROL_PORT) } } },
+- { 0, { 0 }, IPPROTO_TCP } },
+- { { 0, { tcp: { port: 0xffff } } },
+- { 0, { 0 }, 0xffff } },
+- conntrack_pptp_help };
+-
+-/* ip_conntrack_pptp initialization */
+-static int __init init(void)
+-{
+- int retcode;
+-
+- DEBUGP(__FILE__ ": registering helper\n");
+- if ((retcode = ip_conntrack_helper_register(&pptp))) {
+- printk(KERN_ERR "Unable to register conntrack application "
+- "helper for pptp: %d\n", retcode);
+- return -EIO;
+- }
+-
+- return 0;
+-}
+-
+-static void __exit fini(void)
+-{
+- ip_conntrack_helper_unregister(&pptp);
+-}
+-
+-module_init(init);
+-module_exit(fini);
+-
+-EXPORT_SYMBOL(ip_pptp_lock);
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_pptp_priv.h linux.stock/net/ipv4/netfilter/ip_conntrack_pptp_priv.h
+--- linux/net/ipv4/netfilter/ip_conntrack_pptp_priv.h 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_pptp_priv.h 1969-12-31 19:00:00.000000000 -0500
+@@ -1,24 +0,0 @@
+-#ifndef _IP_CT_PPTP_PRIV_H
+-#define _IP_CT_PPTP_PRIV_H
+-
+-/* PptpControlMessageType names */
+-static const char *strMName[] = {
+- "UNKNOWN_MESSAGE",
+- "START_SESSION_REQUEST",
+- "START_SESSION_REPLY",
+- "STOP_SESSION_REQUEST",
+- "STOP_SESSION_REPLY",
+- "ECHO_REQUEST",
+- "ECHO_REPLY",
+- "OUT_CALL_REQUEST",
+- "OUT_CALL_REPLY",
+- "IN_CALL_REQUEST",
+- "IN_CALL_REPLY",
+- "IN_CALL_CONNECT",
+- "CALL_CLEAR_REQUEST",
+- "CALL_DISCONNECT_NOTIFY",
+- "WAN_ERROR_NOTIFY",
+- "SET_LINK_INFO"
+-};
+-
+-#endif
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_proto_gre.c linux.stock/net/ipv4/netfilter/ip_conntrack_proto_gre.c
+--- linux/net/ipv4/netfilter/ip_conntrack_proto_gre.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_proto_gre.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,320 +0,0 @@
+-/*
+- * ip_conntrack_proto_gre.c - Version 1.11
+- *
+- * Connection tracking protocol helper module for GRE.
+- *
+- * GRE is a generic encapsulation protocol, which is generally not very
+- * suited for NAT, as it has no protocol-specific part as port numbers.
+- *
+- * It has an optional key field, which may help us distinguishing two
+- * connections between the same two hosts.
+- *
+- * GRE is defined in RFC 1701 and RFC 1702, as well as RFC 2784
+- *
+- * PPTP is built on top of a modified version of GRE, and has a mandatory
+- * field called "CallID", which serves us for the same purpose as the key
+- * field in plain GRE.
+- *
+- * Documentation about PPTP can be found in RFC 2637
+- *
+- * (C) 2000-2002 by Harald Welte <laforge@gnumonks.org>
+- *
+- * Development of this code funded by Astaro AG (http://www.astaro.com/)
+- *
+- */
+-
+-#include <linux/config.h>
+-#include <linux/module.h>
+-#include <linux/types.h>
+-#include <linux/timer.h>
+-#include <linux/netfilter.h>
+-#include <linux/ip.h>
+-#include <linux/in.h>
+-#include <linux/list.h>
+-
+-#include <linux/netfilter_ipv4/lockhelp.h>
+-
+-DECLARE_RWLOCK(ip_ct_gre_lock);
+-#define ASSERT_READ_LOCK(x) MUST_BE_READ_LOCKED(&ip_ct_gre_lock)
+-#define ASSERT_WRITE_LOCK(x) MUST_BE_WRITE_LOCKED(&ip_ct_gre_lock)
+-
+-#include <linux/netfilter_ipv4/listhelp.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_core.h>
+-
+-#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
+-
+-MODULE_LICENSE("GPL");
+-MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
+-MODULE_DESCRIPTION("netfilter connection tracking protocol helper for GRE");
+-
+-/* shamelessly stolen from ip_conntrack_proto_udp.c */
+-#define GRE_TIMEOUT (30*HZ)
+-#define GRE_STREAM_TIMEOUT (180*HZ)
+-
+-#define DEBUGP(x, args...)
+-#define DUMP_TUPLE_GRE(x)
+-
+-/* GRE KEYMAP HANDLING FUNCTIONS */
+-static LIST_HEAD(gre_keymap_list);
+-
+-static inline int gre_key_cmpfn(const struct ip_ct_gre_keymap *km,
+- const struct ip_conntrack_tuple *t)
+-{
+- return ((km->tuple.src.ip == t->src.ip) &&
+- (km->tuple.dst.ip == t->dst.ip) &&
+- (km->tuple.dst.protonum == t->dst.protonum) &&
+- (km->tuple.dst.u.all == t->dst.u.all));
+-}
+-
+-/* look up the source key for a given tuple */
+-static u_int32_t gre_keymap_lookup(struct ip_conntrack_tuple *t)
+-{
+- struct ip_ct_gre_keymap *km;
+- u_int32_t key;
+-
+- READ_LOCK(&ip_ct_gre_lock);
+- km = LIST_FIND(&gre_keymap_list, gre_key_cmpfn,
+- struct ip_ct_gre_keymap *, t);
+- if (!km) {
+- READ_UNLOCK(&ip_ct_gre_lock);
+- return 0;
+- }
+-
+- key = km->tuple.src.u.gre.key;
+- READ_UNLOCK(&ip_ct_gre_lock);
+-
+- return key;
+-}
+-
+-/* add a single keymap entry, associate with specified expect */
+-int ip_ct_gre_keymap_add(struct ip_conntrack_expect *exp,
+- struct ip_conntrack_tuple *t, int reply)
+-{
+- struct ip_ct_gre_keymap *km;
+-
+- km = kmalloc(sizeof(*km), GFP_ATOMIC);
+- if (!km)
+- return -1;
+-
+- /* initializing list head should be sufficient */
+- memset(km, 0, sizeof(*km));
+-
+- memcpy(&km->tuple, t, sizeof(*t));
+- km->master = exp;
+-
+- if (!reply)
+- exp->proto.gre.keymap_orig = km;
+- else
+- exp->proto.gre.keymap_reply = km;
+-
+- DEBUGP("adding new entry %p: ", km);
+- DUMP_TUPLE_GRE(&km->tuple);
+-
+- WRITE_LOCK(&ip_ct_gre_lock);
+- list_append(&gre_keymap_list, km);
+- WRITE_UNLOCK(&ip_ct_gre_lock);
+-
+- return 0;
+-}
+-
+-/* change the tuple of a keymap entry (used by nat helper) */
+-void ip_ct_gre_keymap_change(struct ip_ct_gre_keymap *km,
+- struct ip_conntrack_tuple *t)
+-{
+- DEBUGP("changing entry %p to: ", km);
+- DUMP_TUPLE_GRE(t);
+-
+- WRITE_LOCK(&ip_ct_gre_lock);
+- memcpy(&km->tuple, t, sizeof(km->tuple));
+- WRITE_UNLOCK(&ip_ct_gre_lock);
+-}
+-
+-
+-/* PUBLIC CONNTRACK PROTO HELPER FUNCTIONS */
+-
+-/* invert gre part of tuple */
+-static int gre_invert_tuple(struct ip_conntrack_tuple *tuple,
+- const struct ip_conntrack_tuple *orig)
+-{
+- tuple->dst.u.gre.protocol = orig->dst.u.gre.protocol;
+- tuple->dst.u.gre.version = orig->dst.u.gre.version;
+-
+- tuple->dst.u.gre.key = orig->src.u.gre.key;
+- tuple->src.u.gre.key = orig->dst.u.gre.key;
+-
+- return 1;
+-}
+-
+-/* gre hdr info to tuple */
+-static int gre_pkt_to_tuple(const void *datah, size_t datalen,
+- struct ip_conntrack_tuple *tuple)
+-{
+- struct gre_hdr *grehdr = (struct gre_hdr *) datah;
+- struct gre_hdr_pptp *pgrehdr = (struct gre_hdr_pptp *) datah;
+- u_int32_t srckey;
+-
+- /* core guarantees 8 protocol bytes, no need for size check */
+-
+- tuple->dst.u.gre.version = grehdr->version;
+- tuple->dst.u.gre.protocol = grehdr->protocol;
+-
+- switch (grehdr->version) {
+- case GRE_VERSION_1701:
+- if (!grehdr->key) {
+- DEBUGP("Can't track GRE without key\n");
+- return 0;
+- }
+- tuple->dst.u.gre.key = *(gre_key(grehdr));
+- break;
+-
+- case GRE_VERSION_PPTP:
+- if (ntohs(grehdr->protocol) != GRE_PROTOCOL_PPTP) {
+- DEBUGP("GRE_VERSION_PPTP but unknown proto\n");
+- return 0;
+- }
+- tuple->dst.u.gre.key = htonl(ntohs(pgrehdr->call_id));
+- break;
+-
+- default:
+- printk(KERN_WARNING "unknown GRE version %hu\n",
+- tuple->dst.u.gre.version);
+- return 0;
+- }
+-
+- srckey = gre_keymap_lookup(tuple);
+-
+- tuple->src.u.gre.key = srckey;
+-
+- return 1;
+-}
+-
+-/* print gre part of tuple */
+-static unsigned int gre_print_tuple(char *buffer,
+- const struct ip_conntrack_tuple *tuple)
+-{
+- return sprintf(buffer, "version=%d protocol=0x%04x srckey=0x%x dstkey=0x%x ",
+- tuple->dst.u.gre.version,
+- ntohs(tuple->dst.u.gre.protocol),
+- ntohl(tuple->src.u.gre.key),
+- ntohl(tuple->dst.u.gre.key));
+-}
+-
+-/* print private data for conntrack */
+-static unsigned int gre_print_conntrack(char *buffer,
+- const struct ip_conntrack *ct)
+-{
+- return sprintf(buffer, "timeout=%u, stream_timeout=%u ",
+- (ct->proto.gre.timeout / HZ),
+- (ct->proto.gre.stream_timeout / HZ));
+-}
+-
+-/* Returns verdict for packet, and may modify conntrack */
+-static int gre_packet(struct ip_conntrack *ct,
+- struct iphdr *iph, size_t len,
+- enum ip_conntrack_info conntrackinfo)
+-{
+- /* If we've seen traffic both ways, this is a GRE connection.
+- * Extend timeout. */
+- if (ct->status & IPS_SEEN_REPLY) {
+- ip_ct_refresh(ct, ct->proto.gre.stream_timeout);
+- /* Also, more likely to be important, and not a probe. */
+- set_bit(IPS_ASSURED_BIT, &ct->status);
+- } else
+- ip_ct_refresh(ct, ct->proto.gre.timeout);
+-
+- return NF_ACCEPT;
+-}
+-
+-/* Called when a new connection for this protocol found. */
+-static int gre_new(struct ip_conntrack *ct,
+- struct iphdr *iph, size_t len)
+-{
+- DEBUGP(": ");
+- DUMP_TUPLE_GRE(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
+-
+- /* initialize to sane value. Ideally a conntrack helper
+- * (e.g. in case of pptp) is increasing them */
+- ct->proto.gre.stream_timeout = GRE_STREAM_TIMEOUT;
+- ct->proto.gre.timeout = GRE_TIMEOUT;
+-
+- return 1;
+-}
+-
+-/* Called when a conntrack entry has already been removed from the hashes
+- * and is about to be deleted from memory */
+-static void gre_destroy(struct ip_conntrack *ct)
+-{
+- struct ip_conntrack_expect *master = ct->master;
+-
+- DEBUGP(" entering\n");
+-
+- if (!master) {
+- DEBUGP("no master exp for ct %p\n", ct);
+- return;
+- }
+-
+- WRITE_LOCK(&ip_ct_gre_lock);
+- if (master->proto.gre.keymap_orig) {
+- DEBUGP("removing %p from list\n", master->proto.gre.keymap_orig);
+- list_del(&master->proto.gre.keymap_orig->list);
+- kfree(master->proto.gre.keymap_orig);
+- }
+- if (master->proto.gre.keymap_reply) {
+- DEBUGP("removing %p from list\n", master->proto.gre.keymap_reply);
+- list_del(&master->proto.gre.keymap_reply->list);
+- kfree(master->proto.gre.keymap_reply);
+- }
+- WRITE_UNLOCK(&ip_ct_gre_lock);
+-}
+-
+-/* protocol helper struct */
+-static struct ip_conntrack_protocol gre = { { NULL, NULL }, IPPROTO_GRE,
+- "gre",
+- gre_pkt_to_tuple,
+- gre_invert_tuple,
+- gre_print_tuple,
+- gre_print_conntrack,
+- gre_packet,
+- gre_new,
+- gre_destroy,
+- NULL,
+- THIS_MODULE };
+-
+-/* ip_conntrack_proto_gre initialization */
+-static int __init init(void)
+-{
+- int retcode;
+-
+- if ((retcode = ip_conntrack_protocol_register(&gre))) {
+- printk(KERN_ERR "Unable to register conntrack protocol "
+- "helper for gre: %d\n", retcode);
+- return -EIO;
+- }
+-
+- return 0;
+-}
+-
+-static void __exit fini(void)
+-{
+- struct list_head *pos, *n;
+-
+- /* delete all keymap entries */
+- WRITE_LOCK(&ip_ct_gre_lock);
+- list_for_each_safe(pos, n, &gre_keymap_list) {
+- DEBUGP("deleting keymap %p\n", pos);
+- list_del(pos);
+- kfree(pos);
+- }
+- WRITE_UNLOCK(&ip_ct_gre_lock);
+-
+- ip_conntrack_protocol_unregister(&gre);
+-}
+-
+-EXPORT_SYMBOL(ip_ct_gre_keymap_add);
+-EXPORT_SYMBOL(ip_ct_gre_keymap_change);
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_proto_tcp.c linux.stock/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
+--- linux/net/ipv4/netfilter/ip_conntrack_proto_tcp.c 2003-08-12 07:33:45.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_proto_tcp.c 2004-05-09 04:13:03.000000000 -0400
+@@ -15,11 +15,17 @@
+ #include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
+ #include <linux/netfilter_ipv4/lockhelp.h>
+
++#if 0
++#define DEBUGP printk
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ /* Protects conntrack->proto.tcp */
+ static DECLARE_RWLOCK(tcp_lock);
+
++/* FIXME: Examine ipfilter's timeouts and conntrack transitions more
++ closely. They're more complex. --RR */
+
+ /* Actually, I believe that neither ipmasq (where this code is stolen
+ from) nor ipfilter do it exactly right. A new conntrack machine taking
+@@ -39,6 +45,25 @@
+ "LISTEN"
+ };
+
++#define SECS *HZ
++#define MINS * 60 SECS
++#define HOURS * 60 MINS
++#define DAYS * 24 HOURS
++
++
++static unsigned long tcp_timeouts[]
++= { 30 MINS, /* TCP_CONNTRACK_NONE, */
++ 5 DAYS, /* TCP_CONNTRACK_ESTABLISHED, */
++ 2 MINS, /* TCP_CONNTRACK_SYN_SENT, */
++ 60 SECS, /* TCP_CONNTRACK_SYN_RECV, */
++ 2 MINS, /* TCP_CONNTRACK_FIN_WAIT, */
++ 2 MINS, /* TCP_CONNTRACK_TIME_WAIT, */
++ 10 SECS, /* TCP_CONNTRACK_CLOSE, */
++ 60 SECS, /* TCP_CONNTRACK_CLOSE_WAIT, */
++ 30 SECS, /* TCP_CONNTRACK_LAST_ACK, */
++ 2 MINS, /* TCP_CONNTRACK_LISTEN, */
++};
++
+ #define sNO TCP_CONNTRACK_NONE
+ #define sES TCP_CONNTRACK_ESTABLISHED
+ #define sSS TCP_CONNTRACK_SYN_SENT
+@@ -161,13 +186,13 @@
+ && tcph->syn && tcph->ack)
+ conntrack->proto.tcp.handshake_ack
+ = htonl(ntohl(tcph->seq) + 1);
++ WRITE_UNLOCK(&tcp_lock);
+
+ /* If only reply is a RST, we can consider ourselves not to
+ have an established connection: this is a fairly common
+ problem case, so we can delete the conntrack
+ immediately. --RR */
+ if (!(conntrack->status & IPS_SEEN_REPLY) && tcph->rst) {
+- WRITE_UNLOCK(&tcp_lock);
+ if (del_timer(&conntrack->timeout))
+ conntrack->timeout.function((unsigned long)conntrack);
+ } else {
+@@ -178,9 +203,7 @@
+ && tcph->ack_seq == conntrack->proto.tcp.handshake_ack)
+ set_bit(IPS_ASSURED_BIT, &conntrack->status);
+
+- WRITE_UNLOCK(&tcp_lock);
+- ip_ct_refresh(conntrack,
+- sysctl_ip_conntrack_tcp_timeouts[newconntrack]);
++ ip_ct_refresh(conntrack, tcp_timeouts[newconntrack]);
+ }
+
+ return NF_ACCEPT;
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_proto_udp.c linux.stock/net/ipv4/netfilter/ip_conntrack_proto_udp.c
+--- linux/net/ipv4/netfilter/ip_conntrack_proto_udp.c 2003-08-12 07:33:45.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_proto_udp.c 2004-05-09 04:13:03.000000000 -0400
+@@ -5,7 +5,9 @@
+ #include <linux/in.h>
+ #include <linux/udp.h>
+ #include <linux/netfilter_ipv4/ip_conntrack_protocol.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_udp.h>
++
++#define UDP_TIMEOUT (30*HZ)
++#define UDP_STREAM_TIMEOUT (180*HZ)
+
+ static int udp_pkt_to_tuple(const void *datah, size_t datalen,
+ struct ip_conntrack_tuple *tuple)
+@@ -50,13 +52,11 @@
+ /* If we've seen traffic both ways, this is some kind of UDP
+ stream. Extend timeout. */
+ if (conntrack->status & IPS_SEEN_REPLY) {
+- ip_ct_refresh(conntrack,
+- sysctl_ip_conntrack_udp_timeouts[UDP_STREAM_TIMEOUT]);
++ ip_ct_refresh(conntrack, UDP_STREAM_TIMEOUT);
+ /* Also, more likely to be important, and not a probe */
+ set_bit(IPS_ASSURED_BIT, &conntrack->status);
+ } else
+- ip_ct_refresh(conntrack,
+- sysctl_ip_conntrack_udp_timeouts[UDP_TIMEOUT]);
++ ip_ct_refresh(conntrack, UDP_TIMEOUT);
+
+ return NF_ACCEPT;
+ }
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_standalone.c linux.stock/net/ipv4/netfilter/ip_conntrack_standalone.c
+--- linux/net/ipv4/netfilter/ip_conntrack_standalone.c 2003-08-12 07:33:45.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_standalone.c 2004-05-09 04:13:03.000000000 -0400
+@@ -27,7 +27,11 @@
+ #include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+ #include <linux/netfilter_ipv4/listhelp.h>
+
++#if 0
++#define DEBUGP printk
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ struct module *ip_conntrack_module = THIS_MODULE;
+ MODULE_LICENSE("GPL");
+@@ -52,17 +56,12 @@
+ return len;
+ }
+
++/* FIXME: Don't print source proto part. --RR */
+ static unsigned int
+ print_expect(char *buffer, const struct ip_conntrack_expect *expect)
+ {
+ unsigned int len;
+
+- if (!expect || !expect->expectant || !expect->expectant->helper) {
+- DEBUGP("expect %x expect->expectant %x expect->expectant->helper %x\n",
+- expect, expect->expectant, expect->expectant->helper);
+- return 0;
+- }
+-
+ if (expect->expectant->helper->timeout)
+ len = sprintf(buffer, "EXPECTING: %lu ",
+ timer_pending(&expect->timeout)
+@@ -294,6 +293,8 @@
+ return ret;
+ }
+
++/* FIXME: Allow NULL functions and sub in pointers to generic for
++ them. --RR */
+ int ip_conntrack_protocol_register(struct ip_conntrack_protocol *proto)
+ {
+ int ret = 0;
+@@ -362,8 +363,6 @@
+ EXPORT_SYMBOL(ip_ct_find_proto);
+ EXPORT_SYMBOL(__ip_ct_find_proto);
+ EXPORT_SYMBOL(ip_ct_find_helper);
+-EXPORT_SYMBOL(sysctl_ip_conntrack_tcp_timeouts);
+-EXPORT_SYMBOL(sysctl_ip_conntrack_udp_timeouts);
+ EXPORT_SYMBOL(ip_conntrack_expect_related);
+ EXPORT_SYMBOL(ip_conntrack_change_expect);
+ EXPORT_SYMBOL(ip_conntrack_unexpect_related);
+diff -Nurb linux/net/ipv4/netfilter/ip_conntrack_tftp.c linux.stock/net/ipv4/netfilter/ip_conntrack_tftp.c
+--- linux/net/ipv4/netfilter/ip_conntrack_tftp.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_conntrack_tftp.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,126 +0,0 @@
+-/*
+- * Licensed under GNU GPL version 2 Copyright Magnus Boden <mb@ozaba.mine.nu>
+- * Version: 0.0.7
+- *
+- * Thu 21 Mar 2002 Harald Welte <laforge@gnumonks.org>
+- * - port to newnat API
+- *
+- */
+-
+-#include <linux/module.h>
+-#include <linux/ip.h>
+-#include <linux/udp.h>
+-
+-#include <linux/netfilter.h>
+-#include <linux/netfilter_ipv4/ip_tables.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_tftp.h>
+-
+-MODULE_AUTHOR("Magnus Boden <mb@ozaba.mine.nu>");
+-MODULE_DESCRIPTION("Netfilter connection tracking module for tftp");
+-MODULE_LICENSE("GPL");
+-
+-#define MAX_PORTS 8
+-static int ports[MAX_PORTS];
+-static int ports_c = 0;
+-#ifdef MODULE_PARM
+-MODULE_PARM(ports, "1-" __MODULE_STRING(MAX_PORTS) "i");
+-MODULE_PARM_DESC(ports, "port numbers of tftp servers");
+-#endif
+-
+-#define DEBUGP(format, args...)
+-
+-static int tftp_help(const struct iphdr *iph, size_t len,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo)
+-{
+- struct udphdr *udph = (void *)iph + iph->ihl * 4;
+- struct tftphdr *tftph = (void *)udph + 8;
+- struct ip_conntrack_expect exp;
+-
+- switch (ntohs(tftph->opcode)) {
+- /* RRQ and WRQ works the same way */
+- case TFTP_OPCODE_READ:
+- case TFTP_OPCODE_WRITE:
+- DEBUGP("");
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
+- memset(&exp, 0, sizeof(exp));
+-
+- exp.tuple = ct->tuplehash[IP_CT_DIR_REPLY].tuple;
+- exp.mask.src.ip = 0xffffffff;
+- exp.mask.dst.ip = 0xffffffff;
+- exp.mask.dst.u.udp.port = 0xffff;
+- exp.mask.dst.protonum = 0xffff;
+- exp.expectfn = NULL;
+-
+- DEBUGP("expect: ");
+- DUMP_TUPLE(&exp.tuple);
+- DUMP_TUPLE(&exp.mask);
+- ip_conntrack_expect_related(ct, &exp);
+- break;
+- default:
+- DEBUGP("Unknown opcode\n");
+- }
+- return NF_ACCEPT;
+-}
+-
+-static struct ip_conntrack_helper tftp[MAX_PORTS];
+-static char tftp_names[MAX_PORTS][10];
+-
+-static void fini(void)
+-{
+- int i;
+-
+- for (i = 0 ; i < ports_c; i++) {
+- DEBUGP("unregistering helper for port %d\n",
+- ports[i]);
+- ip_conntrack_helper_unregister(&tftp[i]);
+- }
+-}
+-
+-static int __init init(void)
+-{
+- int i, ret;
+- char *tmpname;
+-
+- if (!ports[0])
+- ports[0]=TFTP_PORT;
+-
+- for (i = 0 ; (i < MAX_PORTS) && ports[i] ; i++) {
+- /* Create helper structure */
+- memset(&tftp[i], 0, sizeof(struct ip_conntrack_helper));
+-
+- tftp[i].tuple.dst.protonum = IPPROTO_UDP;
+- tftp[i].tuple.src.u.udp.port = htons(ports[i]);
+- tftp[i].mask.dst.protonum = 0xFFFF;
+- tftp[i].mask.src.u.udp.port = 0xFFFF;
+- tftp[i].max_expected = 1;
+- tftp[i].timeout = 0;
+- tftp[i].flags = IP_CT_HELPER_F_REUSE_EXPECT;
+- tftp[i].me = THIS_MODULE;
+- tftp[i].help = tftp_help;
+-
+- tmpname = &tftp_names[i][0];
+- if (ports[i] == TFTP_PORT)
+- sprintf(tmpname, "tftp");
+- else
+- sprintf(tmpname, "tftp-%d", i);
+- tftp[i].name = tmpname;
+-
+- DEBUGP("port #%d: %d\n", i, ports[i]);
+-
+- ret=ip_conntrack_helper_register(&tftp[i]);
+- if (ret) {
+- printk("ERROR registering helper for port %d\n",
+- ports[i]);
+- fini();
+- return(ret);
+- }
+- ports_c++;
+- }
+- return(0);
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_nat_core.c linux.stock/net/ipv4/netfilter/ip_nat_core.c
+--- linux/net/ipv4/netfilter/ip_nat_core.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_nat_core.c 2004-05-09 04:13:03.000000000 -0400
+@@ -31,7 +31,11 @@
+ #include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+ #include <linux/netfilter_ipv4/listhelp.h>
+
++#if 0
++#define DEBUGP printk
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ DECLARE_RWLOCK(ip_nat_lock);
+ DECLARE_RWLOCK_EXTERN(ip_conntrack_lock);
+@@ -207,6 +211,7 @@
+ {
+ struct rtable *rt;
+
++ /* FIXME: IPTOS_TOS(iph->tos) --RR */
+ if (ip_route_output(&rt, var_ip, 0, 0, 0) != 0) {
+ DEBUGP("do_extra_mangle: Can't get route to %u.%u.%u.%u\n",
+ NIPQUAD(var_ip));
+@@ -429,7 +434,7 @@
+ *tuple = *orig_tuple;
+ while ((rptr = find_best_ips_proto_fast(tuple, mr, conntrack, hooknum))
+ != NULL) {
+- DEBUGP("Found best for "); DUMP_TUPLE_RAW(tuple);
++ DEBUGP("Found best for "); DUMP_TUPLE(tuple);
+ /* 3) The per-protocol part of the manip is made to
+ map into the range to make a unique tuple. */
+
+@@ -529,6 +534,31 @@
+ invert_tuplepr(&orig_tp,
+ &conntrack->tuplehash[IP_CT_DIR_REPLY].tuple);
+
++#if 0
++ {
++ unsigned int i;
++
++ DEBUGP("Hook %u (%s), ", hooknum,
++ HOOK2MANIP(hooknum)==IP_NAT_MANIP_SRC ? "SRC" : "DST");
++ DUMP_TUPLE(&orig_tp);
++ DEBUGP("Range %p: ", mr);
++ for (i = 0; i < mr->rangesize; i++) {
++ DEBUGP("%u:%s%s%s %u.%u.%u.%u - %u.%u.%u.%u %u - %u\n",
++ i,
++ (mr->range[i].flags & IP_NAT_RANGE_MAP_IPS)
++ ? " MAP_IPS" : "",
++ (mr->range[i].flags
++ & IP_NAT_RANGE_PROTO_SPECIFIED)
++ ? " PROTO_SPECIFIED" : "",
++ (mr->range[i].flags & IP_NAT_RANGE_FULL)
++ ? " FULL" : "",
++ NIPQUAD(mr->range[i].min_ip),
++ NIPQUAD(mr->range[i].max_ip),
++ mr->range[i].min.all,
++ mr->range[i].max.all);
++ }
++ }
++#endif
+
+ do {
+ if (!get_unique_tuple(&new_tuple, &orig_tp, mr, conntrack,
+@@ -538,6 +568,15 @@
+ return NF_DROP;
+ }
+
++#if 0
++ DEBUGP("Hook %u (%s) %p\n", hooknum,
++ HOOK2MANIP(hooknum)==IP_NAT_MANIP_SRC ? "SRC" : "DST",
++ conntrack);
++ DEBUGP("Original: ");
++ DUMP_TUPLE(&orig_tp);
++ DEBUGP("New: ");
++ DUMP_TUPLE(&new_tuple);
++#endif
+
+ /* We now have two tuples (SRCIP/SRCPT/DSTIP/DSTPT):
+ the original (A/B/C/D') and the mangled one (E/F/G/H').
+@@ -554,6 +593,8 @@
+ If fail this race (reply tuple now used), repeat. */
+ } while (!ip_conntrack_alter_reply(conntrack, &reply));
+
++ /* FIXME: We can simply used existing conntrack reply tuple
++ here --RR */
+ /* Create inverse of original: C/D/A/B' */
+ invert_tuplepr(&inv_tuple, &orig_tp);
+
+@@ -678,6 +719,17 @@
+ iph->check);
+ iph->daddr = manip->ip;
+ }
++#if 0
++ if (ip_fast_csum((u8 *)iph, iph->ihl) != 0)
++ DEBUGP("IP: checksum on packet bad.\n");
++
++ if (proto == IPPROTO_TCP) {
++ void *th = (u_int32_t *)iph + iph->ihl;
++ if (tcp_v4_check(th, len - 4*iph->ihl, iph->saddr, iph->daddr,
++ csum_partial((char *)th, len-4*iph->ihl, 0)))
++ DEBUGP("TCP: checksum on packet bad\n");
++ }
++#endif
+ }
+
+ static inline int exp_for_packet(struct ip_conntrack_expect *exp,
+@@ -765,6 +817,7 @@
+ continue;
+
+ if (exp_for_packet(exp, pskb)) {
++ /* FIXME: May be true multiple times in the case of UDP!! */
+ DEBUGP("calling nat helper (exp=%p) for packet\n",
+ exp);
+ ret = helper->help(ct, exp, info, ctinfo,
+@@ -926,6 +979,7 @@
+ INIT_LIST_HEAD(&byipsproto[i]);
+ }
+
++ /* FIXME: Man, this is a hack. <SIGH> */
+ IP_NF_ASSERT(ip_conntrack_destroyed == NULL);
+ ip_conntrack_destroyed = &ip_nat_cleanup_conntrack;
+
+diff -Nurb linux/net/ipv4/netfilter/ip_nat_h323.c linux.stock/net/ipv4/netfilter/ip_nat_h323.c
+--- linux/net/ipv4/netfilter/ip_nat_h323.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_nat_h323.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,403 +0,0 @@
+-/*
+- * H.323 'brute force' extension for NAT alteration.
+- * Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+- *
+- * Based on ip_masq_h323.c for 2.2 kernels from CoRiTel, Sofia project.
+- * (http://www.coritel.it/projects/sofia/nat.html)
+- * Uses Sampsa Ranta's excellent idea on using expectfn to 'bind'
+- * the unregistered helpers to the conntrack entries.
+- */
+-
+-
+-#include <linux/module.h>
+-#include <linux/netfilter.h>
+-#include <linux/ip.h>
+-#include <net/checksum.h>
+-#include <net/tcp.h>
+-
+-#include <linux/netfilter_ipv4/lockhelp.h>
+-#include <linux/netfilter_ipv4/ip_nat.h>
+-#include <linux/netfilter_ipv4/ip_nat_helper.h>
+-#include <linux/netfilter_ipv4/ip_nat_rule.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_tuple.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_h323.h>
+-
+-MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+-MODULE_DESCRIPTION("H.323 'brute force' connection tracking module");
+-MODULE_LICENSE("GPL");
+-
+-DECLARE_LOCK_EXTERN(ip_h323_lock);
+-struct module *ip_nat_h323 = THIS_MODULE;
+-
+-#define DEBUGP(format, args...)
+-
+-
+-static unsigned int
+-h225_nat_expected(struct sk_buff **pskb,
+- unsigned int hooknum,
+- struct ip_conntrack *ct,
+- struct ip_nat_info *info);
+-
+-static unsigned int h225_nat_help(struct ip_conntrack *ct,
+- struct ip_conntrack_expect *exp,
+- struct ip_nat_info *info,
+- enum ip_conntrack_info ctinfo,
+- unsigned int hooknum,
+- struct sk_buff **pskb);
+-
+-static struct ip_nat_helper h245 =
+- { { NULL, NULL },
+- "H.245", /* name */
+- 0, /* flags */
+- NULL, /* module */
+- { { 0, { 0 } }, /* tuple */
+- { 0, { 0 }, IPPROTO_TCP } },
+- { { 0, { 0xFFFF } }, /* mask */
+- { 0, { 0 }, 0xFFFF } },
+- h225_nat_help, /* helper */
+- h225_nat_expected /* expectfn */
+- };
+-
+-static unsigned int
+-h225_nat_expected(struct sk_buff **pskb,
+- unsigned int hooknum,
+- struct ip_conntrack *ct,
+- struct ip_nat_info *info)
+-{
+- struct ip_nat_multi_range mr;
+- u_int32_t newdstip, newsrcip, newip;
+- u_int16_t port;
+- struct ip_ct_h225_expect *exp_info;
+- struct ip_ct_h225_master *master_info;
+- struct ip_conntrack *master = master_ct(ct);
+- unsigned int is_h225, ret;
+-
+- IP_NF_ASSERT(info);
+- IP_NF_ASSERT(master);
+-
+- IP_NF_ASSERT(!(info->initialized & (1<<HOOK2MANIP(hooknum))));
+-
+- DEBUGP("h225_nat_expected: We have a connection!\n");
+- master_info = &ct->master->expectant->help.ct_h225_info;
+- exp_info = &ct->master->help.exp_h225_info;
+-
+- LOCK_BH(&ip_h323_lock);
+-
+- DEBUGP("master: ");
+- DUMP_TUPLE(&master->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
+- DUMP_TUPLE(&master->tuplehash[IP_CT_DIR_REPLY].tuple);
+- DEBUGP("conntrack: ");
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
+- if (exp_info->dir == IP_CT_DIR_ORIGINAL) {
+- /* Make connection go to the client. */
+- newdstip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip;
+- newsrcip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip;
+- DEBUGP("h225_nat_expected: %u.%u.%u.%u->%u.%u.%u.%u (to client)\n",
+- NIPQUAD(newsrcip), NIPQUAD(newdstip));
+- } else {
+- /* Make the connection go to the server */
+- newdstip = master->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip;
+- newsrcip = master->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+- DEBUGP("h225_nat_expected: %u.%u.%u.%u->%u.%u.%u.%u (to server)\n",
+- NIPQUAD(newsrcip), NIPQUAD(newdstip));
+- }
+- port = exp_info->port;
+- is_h225 = master_info->is_h225 == H225_PORT;
+- UNLOCK_BH(&ip_h323_lock);
+-
+- if (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC)
+- newip = newsrcip;
+- else
+- newip = newdstip;
+-
+- DEBUGP("h225_nat_expected: IP to %u.%u.%u.%u\n", NIPQUAD(newip));
+-
+- mr.rangesize = 1;
+- /* We don't want to manip the per-protocol, just the IPs... */
+- mr.range[0].flags = IP_NAT_RANGE_MAP_IPS;
+- mr.range[0].min_ip = mr.range[0].max_ip = newip;
+-
+- /* ... unless we're doing a MANIP_DST, in which case, make
+- sure we map to the correct port */
+- if (HOOK2MANIP(hooknum) == IP_NAT_MANIP_DST) {
+- mr.range[0].flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
+- mr.range[0].min = mr.range[0].max
+- = ((union ip_conntrack_manip_proto)
+- { port });
+- }
+-
+- ret = ip_nat_setup_info(ct, &mr, hooknum);
+-
+- if (is_h225) {
+- DEBUGP("h225_nat_expected: H.225, setting NAT helper for %p\n", ct);
+- /* NAT expectfn called with ip_nat_lock write-locked */
+- info->helper = &h245;
+- }
+- return ret;
+-}
+-
+-static int h323_signal_address_fixup(struct ip_conntrack *ct,
+- struct sk_buff **pskb,
+- enum ip_conntrack_info ctinfo)
+-{
+- struct iphdr *iph = (*pskb)->nh.iph;
+- struct tcphdr *tcph = (void *)iph + iph->ihl*4;
+- unsigned char *data;
+- u_int32_t tcplen = (*pskb)->len - iph->ihl*4;
+- u_int32_t datalen = tcplen - tcph->doff*4;
+- struct ip_ct_h225_master *info = &ct->help.ct_h225_info;
+- u_int32_t newip;
+- u_int16_t port;
+- u_int8_t buffer[6];
+- int i;
+-
+- MUST_BE_LOCKED(&ip_h323_lock);
+-
+- DEBUGP("h323_signal_address_fixup: %s %s\n",
+- between(info->seq[IP_CT_DIR_ORIGINAL], ntohl(tcph->seq), ntohl(tcph->seq) + datalen)
+- ? "yes" : "no",
+- between(info->seq[IP_CT_DIR_REPLY], ntohl(tcph->seq), ntohl(tcph->seq) + datalen)
+- ? "yes" : "no");
+- if (!(between(info->seq[IP_CT_DIR_ORIGINAL], ntohl(tcph->seq), ntohl(tcph->seq) + datalen)
+- || between(info->seq[IP_CT_DIR_REPLY], ntohl(tcph->seq), ntohl(tcph->seq) + datalen)))
+- return 1;
+-
+- DEBUGP("h323_signal_address_fixup: offsets %u + 6 and %u + 6 in %u\n",
+- info->offset[IP_CT_DIR_ORIGINAL],
+- info->offset[IP_CT_DIR_REPLY],
+- tcplen);
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
+-
+- for (i = 0; i < IP_CT_DIR_MAX; i++) {
+- DEBUGP("h323_signal_address_fixup: %s %s\n",
+- info->dir == IP_CT_DIR_ORIGINAL ? "original" : "reply",
+- i == IP_CT_DIR_ORIGINAL ? "caller" : "callee");
+- if (!between(info->seq[i], ntohl(tcph->seq),
+- ntohl(tcph->seq) + datalen))
+- continue;
+- if (!between(info->seq[i] + 6, ntohl(tcph->seq),
+- ntohl(tcph->seq) + datalen)) {
+- /* Partial retransmisison. It's a cracker being funky. */
+- if (net_ratelimit()) {
+- printk("H.323_NAT: partial packet %u/6 in %u/%u\n",
+- info->seq[i],
+- ntohl(tcph->seq),
+- ntohl(tcph->seq) + datalen);
+- }
+- return 0;
+- }
+-
+- /* Change address inside packet to match way we're mapping
+- this connection. */
+- if (i == IP_CT_DIR_ORIGINAL) {
+- newip = ct->tuplehash[!info->dir].tuple.dst.ip;
+- port = ct->tuplehash[!info->dir].tuple.dst.u.tcp.port;
+- } else {
+- newip = ct->tuplehash[!info->dir].tuple.src.ip;
+- port = ct->tuplehash[!info->dir].tuple.src.u.tcp.port;
+- }
+-
+- data = (char *) tcph + tcph->doff * 4 + info->offset[i];
+-
+- DEBUGP("h323_signal_address_fixup: orig %s IP:port %u.%u.%u.%u:%u\n",
+- i == IP_CT_DIR_ORIGINAL ? "source" : "dest ",
+- data[0], data[1], data[2], data[3],
+- (data[4] << 8 | data[5]));
+-
+- /* Modify the packet */
+- memcpy(buffer, &newip, 4);
+- memcpy(buffer + 4, &port, 2);
+- if (!ip_nat_mangle_tcp_packet(pskb, ct, ctinfo, info->offset[i],
+- 6, buffer, 6))
+- return 0;
+-
+- DEBUGP("h323_signal_address_fixup: new %s IP:port %u.%u.%u.%u:%u\n",
+- i == IP_CT_DIR_ORIGINAL ? "source" : "dest ",
+- data[0], data[1], data[2], data[3],
+- (data[4] << 8 | data[5]));
+- }
+-
+- return 1;
+-}
+-
+-static int h323_data_fixup(struct ip_ct_h225_expect *info,
+- struct ip_conntrack *ct,
+- struct sk_buff **pskb,
+- enum ip_conntrack_info ctinfo,
+- struct ip_conntrack_expect *expect)
+-{
+- u_int32_t newip;
+- u_int16_t port;
+- u_int8_t buffer[6];
+- struct ip_conntrack_tuple newtuple;
+- struct iphdr *iph = (*pskb)->nh.iph;
+- struct tcphdr *tcph = (void *)iph + iph->ihl*4;
+- unsigned char *data;
+- u_int32_t tcplen = (*pskb)->len - iph->ihl*4;
+- struct ip_ct_h225_master *master_info = &ct->help.ct_h225_info;
+- int is_h225;
+-
+- MUST_BE_LOCKED(&ip_h323_lock);
+- DEBUGP("h323_data_fixup: offset %u + 6 in %u\n", info->offset, tcplen);
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
+-
+- if (!between(expect->seq + 6, ntohl(tcph->seq),
+- ntohl(tcph->seq) + tcplen - tcph->doff * 4)) {
+- /* Partial retransmisison. It's a cracker being funky. */
+- if (net_ratelimit()) {
+- printk("H.323_NAT: partial packet %u/6 in %u/%u\n",
+- expect->seq,
+- ntohl(tcph->seq),
+- ntohl(tcph->seq) + tcplen - tcph->doff * 4);
+- }
+- return 0;
+- }
+-
+- /* Change address inside packet to match way we're mapping
+- this connection. */
+- if (info->dir == IP_CT_DIR_REPLY) {
+- /* Must be where client thinks server is */
+- newip = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip;
+- /* Expect something from client->server */
+- newtuple.src.ip = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip;
+- newtuple.dst.ip = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip;
+- } else {
+- /* Must be where server thinks client is */
+- newip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+- /* Expect something from server->client */
+- newtuple.src.ip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip;
+- newtuple.dst.ip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+- }
+-
+- is_h225 = (master_info->is_h225 == H225_PORT);
+-
+- if (is_h225) {
+- newtuple.dst.protonum = IPPROTO_TCP;
+- newtuple.src.u.tcp.port = expect->tuple.src.u.tcp.port;
+- } else {
+- newtuple.dst.protonum = IPPROTO_UDP;
+- newtuple.src.u.udp.port = expect->tuple.src.u.udp.port;
+- }
+-
+- /* Try to get same port: if not, try to change it. */
+- for (port = ntohs(info->port); port != 0; port++) {
+- if (is_h225)
+- newtuple.dst.u.tcp.port = htons(port);
+- else
+- newtuple.dst.u.udp.port = htons(port);
+-
+- if (ip_conntrack_change_expect(expect, &newtuple) == 0)
+- break;
+- }
+- if (port == 0) {
+- DEBUGP("h323_data_fixup: no free port found!\n");
+- return 0;
+- }
+-
+- port = htons(port);
+-
+- data = (char *) tcph + tcph->doff * 4 + info->offset;
+-
+- DEBUGP("h323_data_fixup: orig IP:port %u.%u.%u.%u:%u\n",
+- data[0], data[1], data[2], data[3],
+- (data[4] << 8 | data[5]));
+-
+- /* Modify the packet */
+- memcpy(buffer, &newip, 4);
+- memcpy(buffer + 4, &port, 2);
+- if (!ip_nat_mangle_tcp_packet(pskb, ct, ctinfo, info->offset,
+- 6, buffer, 6))
+- return 0;
+-
+- DEBUGP("h323_data_fixup: new IP:port %u.%u.%u.%u:%u\n",
+- data[0], data[1], data[2], data[3],
+- (data[4] << 8 | data[5]));
+-
+- return 1;
+-}
+-
+-static unsigned int h225_nat_help(struct ip_conntrack *ct,
+- struct ip_conntrack_expect *exp,
+- struct ip_nat_info *info,
+- enum ip_conntrack_info ctinfo,
+- unsigned int hooknum,
+- struct sk_buff **pskb)
+-{
+- int dir;
+- struct ip_ct_h225_expect *exp_info;
+-
+- /* Only mangle things once: original direction in POST_ROUTING
+- and reply direction on PRE_ROUTING. */
+- dir = CTINFO2DIR(ctinfo);
+- DEBUGP("nat_h323: dir %s at hook %s\n",
+- dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY",
+- hooknum == NF_IP_POST_ROUTING ? "POSTROUTING"
+- : hooknum == NF_IP_PRE_ROUTING ? "PREROUTING"
+- : hooknum == NF_IP_LOCAL_OUT ? "OUTPUT" : "???");
+- if (!((hooknum == NF_IP_POST_ROUTING && dir == IP_CT_DIR_ORIGINAL)
+- || (hooknum == NF_IP_PRE_ROUTING && dir == IP_CT_DIR_REPLY))) {
+- DEBUGP("nat_h323: Not touching dir %s at hook %s\n",
+- dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY",
+- hooknum == NF_IP_POST_ROUTING ? "POSTROUTING"
+- : hooknum == NF_IP_PRE_ROUTING ? "PREROUTING"
+- : hooknum == NF_IP_LOCAL_OUT ? "OUTPUT" : "???");
+- return NF_ACCEPT;
+- }
+-
+- if (!exp) {
+- LOCK_BH(&ip_h323_lock);
+- if (!h323_signal_address_fixup(ct, pskb, ctinfo)) {
+- UNLOCK_BH(&ip_h323_lock);
+- return NF_DROP;
+- }
+- UNLOCK_BH(&ip_h323_lock);
+- return NF_ACCEPT;
+- }
+-
+- exp_info = &exp->help.exp_h225_info;
+-
+- LOCK_BH(&ip_h323_lock);
+- if (!h323_data_fixup(exp_info, ct, pskb, ctinfo, exp)) {
+- UNLOCK_BH(&ip_h323_lock);
+- return NF_DROP;
+- }
+- UNLOCK_BH(&ip_h323_lock);
+-
+- return NF_ACCEPT;
+-}
+-
+-static struct ip_nat_helper h225 =
+- { { NULL, NULL },
+- "H.225", /* name */
+- IP_NAT_HELPER_F_ALWAYS, /* flags */
+- THIS_MODULE, /* module */
+- { { 0, { __constant_htons(H225_PORT) } }, /* tuple */
+- { 0, { 0 }, IPPROTO_TCP } },
+- { { 0, { 0xFFFF } }, /* mask */
+- { 0, { 0 }, 0xFFFF } },
+- h225_nat_help, /* helper */
+- h225_nat_expected /* expectfn */
+- };
+-
+-static int __init init(void)
+-{
+- int ret;
+-
+- ret = ip_nat_helper_register(&h225);
+-
+- if (ret != 0)
+- printk("ip_nat_h323: cannot initialize the module!\n");
+-
+- return ret;
+-}
+-
+-static void __exit fini(void)
+-{
+- ip_nat_helper_unregister(&h225);
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_nat_helper.c linux.stock/net/ipv4/netfilter/ip_nat_helper.c
+--- linux/net/ipv4/netfilter/ip_nat_helper.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_nat_helper.c 2004-05-09 04:13:03.000000000 -0400
+@@ -8,9 +8,6 @@
+ * - add support for SACK adjustment
+ * 14 Mar 2002 Harald Welte <laforge@gnumonks.org>:
+ * - merge SACK support into newnat API
+- * 16 Aug 2002 Brian J. Murrell <netfilter@interlinx.bc.ca>:
+- * - make ip_nat_resize_packet more generic (TCP and UDP)
+- * - add ip_nat_mangle_udp_packet
+ */
+ #include <linux/version.h>
+ #include <linux/config.h>
+@@ -25,7 +22,6 @@
+ #include <net/icmp.h>
+ #include <net/ip.h>
+ #include <net/tcp.h>
+-#include <net/udp.h>
+
+ #define ASSERT_READ_LOCK(x) MUST_BE_READ_LOCKED(&ip_nat_lock)
+ #define ASSERT_WRITE_LOCK(x) MUST_BE_WRITE_LOCKED(&ip_nat_lock)
+@@ -38,8 +34,13 @@
+ #include <linux/netfilter_ipv4/ip_nat_helper.h>
+ #include <linux/netfilter_ipv4/listhelp.h>
+
++#if 0
++#define DEBUGP printk
++#define DUMP_OFFSET(x) printk("offset_before=%d, offset_after=%d, correction_pos=%u\n", x->offset_before, x->offset_after, x->correction_pos);
++#else
+ #define DEBUGP(format, args...)
+ #define DUMP_OFFSET(x)
++#endif
+
+ DECLARE_LOCK(ip_nat_seqofs_lock);
+
+@@ -50,12 +51,18 @@
+ int new_size)
+ {
+ struct iphdr *iph;
++ struct tcphdr *tcph;
++ void *data;
+ int dir;
+ struct ip_nat_seq *this_way, *other_way;
+
+ DEBUGP("ip_nat_resize_packet: old_size = %u, new_size = %u\n",
+ (*skb)->len, new_size);
+
++ iph = (*skb)->nh.iph;
++ tcph = (void *)iph + iph->ihl*4;
++ data = (void *)tcph + tcph->doff*4;
++
+ dir = CTINFO2DIR(ctinfo);
+
+ this_way = &ct->nat.info.seq[dir];
+@@ -77,9 +84,8 @@
+ }
+
+ iph = (*skb)->nh.iph;
+- if (iph->protocol == IPPROTO_TCP) {
+- struct tcphdr *tcph = (void *)iph + iph->ihl*4;
+- void *data = (void *)tcph + tcph->doff*4;
++ tcph = (void *)iph + iph->ihl*4;
++ data = (void *)tcph + tcph->doff*4;
+
+ DEBUGP("ip_nat_resize_packet: Seq_offset before: ");
+ DUMP_OFFSET(this_way);
+@@ -95,20 +101,25 @@
+ this_way->correction_pos = ntohl(tcph->seq);
+ this_way->offset_before = this_way->offset_after;
+ this_way->offset_after = (int32_t)
+- this_way->offset_before + new_size -
+- (*skb)->len;
++ this_way->offset_before + new_size - (*skb)->len;
+ }
+
+ UNLOCK_BH(&ip_nat_seqofs_lock);
+
+ DEBUGP("ip_nat_resize_packet: Seq_offset after: ");
+ DUMP_OFFSET(this_way);
+- }
+
+ return 1;
+ }
+
+
++/* Generic function for mangling variable-length address changes inside
++ * NATed connections (like the PORT XXX,XXX,XXX,XXX,XXX,XXX command in FTP).
++ *
++ * Takes care about all the nasty sequence number changes, checksumming,
++ * skb enlargement, ...
++ *
++ * */
+ int
+ ip_nat_mangle_tcp_packet(struct sk_buff **skb,
+ struct ip_conntrack *ct,
+@@ -163,7 +174,6 @@
+ tcph = (void *)iph + iph->ihl*4;
+ data = (void *)tcph + tcph->doff*4;
+
+- if (rep_len != match_len)
+ /* move post-replacement */
+ memmove(data + match_offset + rep_len,
+ data + match_offset + match_len,
+@@ -198,104 +208,6 @@
+ return 1;
+ }
+
+-int
+-ip_nat_mangle_udp_packet(struct sk_buff **skb,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo,
+- unsigned int match_offset,
+- unsigned int match_len,
+- char *rep_buffer,
+- unsigned int rep_len)
+-{
+- struct iphdr *iph = (*skb)->nh.iph;
+- struct udphdr *udph = (void *)iph + iph->ihl * 4;
+- unsigned char *data;
+- u_int32_t udplen, newlen, newudplen;
+-
+- udplen = (*skb)->len - iph->ihl*4;
+- newudplen = udplen - match_len + rep_len;
+- newlen = iph->ihl*4 + newudplen;
+-
+- if (newlen > 65535) {
+- if (net_ratelimit())
+- printk("ip_nat_mangle_udp_packet: nat'ed packet "
+- "exceeds maximum packet size\n");
+- return 0;
+- }
+-
+- if ((*skb)->len != newlen) {
+- if (!ip_nat_resize_packet(skb, ct, ctinfo, newlen)) {
+- printk("resize_packet failed!!\n");
+- return 0;
+- }
+- }
+-
+- /* Alexey says: if a hook changes _data_ ... it can break
+- original packet sitting in tcp queue and this is fatal */
+- if (skb_cloned(*skb)) {
+- struct sk_buff *nskb = skb_copy(*skb, GFP_ATOMIC);
+- if (!nskb) {
+- if (net_ratelimit())
+- printk("Out of memory cloning TCP packet\n");
+- return 0;
+- }
+- /* Rest of kernel will get very unhappy if we pass it
+- a suddenly-orphaned skbuff */
+- if ((*skb)->sk)
+- skb_set_owner_w(nskb, (*skb)->sk);
+- kfree_skb(*skb);
+- *skb = nskb;
+- }
+-
+- /* skb may be copied !! */
+- iph = (*skb)->nh.iph;
+- udph = (void *)iph + iph->ihl*4;
+- data = (void *)udph + sizeof(struct udphdr);
+-
+- if (rep_len != match_len)
+- /* move post-replacement */
+- memmove(data + match_offset + rep_len,
+- data + match_offset + match_len,
+- (*skb)->tail - (data + match_offset + match_len));
+-
+- /* insert data from buffer */
+- memcpy(data + match_offset, rep_buffer, rep_len);
+-
+- /* update skb info */
+- if (newlen > (*skb)->len) {
+- DEBUGP("ip_nat_mangle_udp_packet: Extending packet by "
+- "%u to %u bytes\n", newlen - (*skb)->len, newlen);
+- skb_put(*skb, newlen - (*skb)->len);
+- } else {
+- DEBUGP("ip_nat_mangle_udp_packet: Shrinking packet from "
+- "%u to %u bytes\n", (*skb)->len, newlen);
+- skb_trim(*skb, newlen);
+- }
+-
+- /* update the length of the UDP and IP packets to the new values*/
+- udph->len = htons((*skb)->len - iph->ihl*4);
+- iph->tot_len = htons(newlen);
+-
+- /* fix udp checksum if udp checksum was previously calculated */
+- if ((*skb)->csum != 0) {
+- (*skb)->csum = csum_partial((char *)udph +
+- sizeof(struct udphdr),
+- newudplen - sizeof(struct udphdr),
+- 0);
+-
+- udph->check = 0;
+- udph->check = csum_tcpudp_magic(iph->saddr, iph->daddr,
+- newudplen, IPPROTO_UDP,
+- csum_partial((char *)udph,
+- sizeof(struct udphdr),
+- (*skb)->csum));
+- }
+-
+- ip_send_check(iph);
+-
+- return 1;
+-}
+-
+ /* Adjust one found SACK option including checksum correction */
+ static void
+ sack_adjust(struct tcphdr *tcph,
+diff -Nurb linux/net/ipv4/netfilter/ip_nat_mms.c linux.stock/net/ipv4/netfilter/ip_nat_mms.c
+--- linux/net/ipv4/netfilter/ip_nat_mms.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_nat_mms.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,330 +0,0 @@
+-/* MMS extension for TCP NAT alteration.
+- * (C) 2002 by Filip Sneppe <filip.sneppe@cronos.be>
+- * based on ip_nat_ftp.c and ip_nat_irc.c
+- *
+- * ip_nat_mms.c v0.3 2002-09-22
+- *
+- * 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.
+- *
+- * Module load syntax:
+- * insmod ip_nat_mms.o ports=port1,port2,...port<MAX_PORTS>
+- *
+- * Please give the ports of all MMS servers You wish to connect to.
+- * If you don't specify ports, the default will be TCP port 1755.
+- *
+- * More info on MMS protocol, firewalls and NAT:
+- * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/MMSFirewall.asp
+- * http://www.microsoft.com/windows/windowsmedia/serve/firewall.asp
+- *
+- * The SDP project people are reverse-engineering MMS:
+- * http://get.to/sdp
+- */
+-
+-
+-#include <linux/module.h>
+-#include <linux/netfilter_ipv4.h>
+-#include <linux/ip.h>
+-#include <linux/tcp.h>
+-#include <net/tcp.h>
+-#include <linux/netfilter_ipv4/ip_nat.h>
+-#include <linux/netfilter_ipv4/ip_nat_helper.h>
+-#include <linux/netfilter_ipv4/ip_nat_rule.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_mms.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-
+-#define DEBUGP(format, args...)
+-#define DUMP_BYTES(address, counter)
+-
+-#define MAX_PORTS 8
+-static int ports[MAX_PORTS];
+-static int ports_c = 0;
+-
+-#ifdef MODULE_PARM
+-MODULE_PARM(ports, "1-" __MODULE_STRING(MAX_PORTS) "i");
+-#endif
+-
+-MODULE_AUTHOR("Filip Sneppe <filip.sneppe@cronos.be>");
+-MODULE_DESCRIPTION("Microsoft Windows Media Services (MMS) NAT module");
+-MODULE_LICENSE("GPL");
+-
+-DECLARE_LOCK_EXTERN(ip_mms_lock);
+-
+-
+-static int mms_data_fixup(const struct ip_ct_mms_expect *ct_mms_info,
+- struct ip_conntrack *ct,
+- struct sk_buff **pskb,
+- enum ip_conntrack_info ctinfo,
+- struct ip_conntrack_expect *expect)
+-{
+- u_int32_t newip;
+- struct ip_conntrack_tuple t;
+- struct iphdr *iph = (*pskb)->nh.iph;
+- struct tcphdr *tcph = (void *) iph + iph->ihl * 4;
+- char *data = (char *)tcph + tcph->doff * 4;
+- int i, j, k, port;
+- u_int16_t mms_proto;
+-
+- u_int32_t *mms_chunkLenLV = (u_int32_t *)(data + MMS_SRV_CHUNKLENLV_OFFSET);
+- u_int32_t *mms_chunkLenLM = (u_int32_t *)(data + MMS_SRV_CHUNKLENLM_OFFSET);
+- u_int32_t *mms_messageLength = (u_int32_t *)(data + MMS_SRV_MESSAGELENGTH_OFFSET);
+-
+- int zero_padding;
+-
+- char buffer[28]; /* "\\255.255.255.255\UDP\65635" * 2 (for unicode) */
+- char unicode_buffer[75]; /* 27*2 (unicode) + 20 + 1 */
+- char proto_string[6];
+-
+- MUST_BE_LOCKED(&ip_mms_lock);
+-
+- /* what was the protocol again ? */
+- mms_proto = expect->tuple.dst.protonum;
+- sprintf(proto_string, "%u", mms_proto);
+-
+- DEBUGP("ip_nat_mms: mms_data_fixup: info (seq %u + %u) in %u, proto %s\n",
+- expect->seq, ct_mms_info->len, ntohl(tcph->seq),
+- mms_proto == IPPROTO_UDP ? "UDP"
+- : mms_proto == IPPROTO_TCP ? "TCP":proto_string);
+-
+- newip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+-
+- /* Alter conntrack's expectations. */
+- t = expect->tuple;
+- t.dst.ip = newip;
+- for (port = ct_mms_info->port; port != 0; port++) {
+- t.dst.u.tcp.port = htons(port);
+- if (ip_conntrack_change_expect(expect, &t) == 0) {
+- DEBUGP("ip_nat_mms: mms_data_fixup: using port %d\n", port);
+- break;
+- }
+- }
+-
+- if(port == 0)
+- return 0;
+-
+- sprintf(buffer, "\\\\%u.%u.%u.%u\\%s\\%u",
+- NIPQUAD(newip),
+- expect->tuple.dst.protonum == IPPROTO_UDP ? "UDP"
+- : expect->tuple.dst.protonum == IPPROTO_TCP ? "TCP":proto_string,
+- port);
+- DEBUGP("ip_nat_mms: new unicode string=%s\n", buffer);
+-
+- memset(unicode_buffer, 0, sizeof(char)*75);
+-
+- for (i=0; i<strlen(buffer); ++i)
+- *(unicode_buffer+i*2)=*(buffer+i);
+-
+- DEBUGP("ip_nat_mms: mms_data_fixup: padding: %u len: %u\n", ct_mms_info->padding, ct_mms_info->len);
+- DEBUGP("ip_nat_mms: mms_data_fixup: offset: %u\n", MMS_SRV_UNICODE_STRING_OFFSET+ct_mms_info->len);
+- DUMP_BYTES(data+MMS_SRV_UNICODE_STRING_OFFSET, 60);
+-
+- /* add end of packet to it */
+- for (j=0; j<ct_mms_info->padding; ++j) {
+- DEBUGP("ip_nat_mms: mms_data_fixup: i=%u j=%u byte=%u\n",
+- i, j, (u8)*(data+MMS_SRV_UNICODE_STRING_OFFSET+ct_mms_info->len+j));
+- *(unicode_buffer+i*2+j) = *(data+MMS_SRV_UNICODE_STRING_OFFSET+ct_mms_info->len+j);
+- }
+-
+- /* pad with zeroes at the end ? see explanation of weird math below */
+- zero_padding = (8-(strlen(buffer)*2 + ct_mms_info->padding + 4)%8)%8;
+- for (k=0; k<zero_padding; ++k)
+- *(unicode_buffer+i*2+j+k)= (char)0;
+-
+- DEBUGP("ip_nat_mms: mms_data_fixup: zero_padding = %u\n", zero_padding);
+- DEBUGP("ip_nat_mms: original=> chunkLenLV=%u chunkLenLM=%u messageLength=%u\n",
+- *mms_chunkLenLV, *mms_chunkLenLM, *mms_messageLength);
+-
+- /* explanation, before I forget what I did:
+- strlen(buffer)*2 + ct_mms_info->padding + 4 must be divisable by 8;
+- divide by 8 and add 3 to compute the mms_chunkLenLM field,
+- but note that things may have to be padded with zeroes to align by 8
+- bytes, hence we add 7 and divide by 8 to get the correct length */
+- *mms_chunkLenLM = (u_int32_t) (3+(strlen(buffer)*2+ct_mms_info->padding+11)/8);
+- *mms_chunkLenLV = *mms_chunkLenLM+2;
+- *mms_messageLength = *mms_chunkLenLV*8;
+-
+- DEBUGP("ip_nat_mms: modified=> chunkLenLV=%u chunkLenLM=%u messageLength=%u\n",
+- *mms_chunkLenLV, *mms_chunkLenLM, *mms_messageLength);
+-
+- ip_nat_mangle_tcp_packet(pskb, ct, ctinfo,
+- expect->seq - ntohl(tcph->seq),
+- ct_mms_info->len + ct_mms_info->padding, unicode_buffer,
+- strlen(buffer)*2 + ct_mms_info->padding + zero_padding);
+- DUMP_BYTES(unicode_buffer, 60);
+-
+- return 1;
+-}
+-
+-static unsigned int
+-mms_nat_expected(struct sk_buff **pskb,
+- unsigned int hooknum,
+- struct ip_conntrack *ct,
+- struct ip_nat_info *info)
+-{
+- struct ip_nat_multi_range mr;
+- u_int32_t newdstip, newsrcip, newip;
+-
+- struct ip_conntrack *master = master_ct(ct);
+-
+- IP_NF_ASSERT(info);
+- IP_NF_ASSERT(master);
+-
+- IP_NF_ASSERT(!(info->initialized & (1 << HOOK2MANIP(hooknum))));
+-
+- DEBUGP("ip_nat_mms: mms_nat_expected: We have a connection!\n");
+-
+- newdstip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip;
+- newsrcip = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.ip;
+- DEBUGP("ip_nat_mms: mms_nat_expected: hook %s: newsrc->newdst %u.%u.%u.%u->%u.%u.%u.%u\n",
+- hooknum == NF_IP_POST_ROUTING ? "POSTROUTING"
+- : hooknum == NF_IP_PRE_ROUTING ? "PREROUTING"
+- : hooknum == NF_IP_LOCAL_OUT ? "OUTPUT" : "???",
+- NIPQUAD(newsrcip), NIPQUAD(newdstip));
+-
+- if (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC)
+- newip = newsrcip;
+- else
+- newip = newdstip;
+-
+- DEBUGP("ip_nat_mms: mms_nat_expected: IP to %u.%u.%u.%u\n", NIPQUAD(newip));
+-
+- mr.rangesize = 1;
+- /* We don't want to manip the per-protocol, just the IPs. */
+- mr.range[0].flags = IP_NAT_RANGE_MAP_IPS;
+- mr.range[0].min_ip = mr.range[0].max_ip = newip;
+-
+- return ip_nat_setup_info(ct, &mr, hooknum);
+-}
+-
+-
+-static unsigned int mms_nat_help(struct ip_conntrack *ct,
+- struct ip_conntrack_expect *exp,
+- struct ip_nat_info *info,
+- enum ip_conntrack_info ctinfo,
+- unsigned int hooknum,
+- struct sk_buff **pskb)
+-{
+- struct iphdr *iph = (*pskb)->nh.iph;
+- struct tcphdr *tcph = (void *) iph + iph->ihl * 4;
+- unsigned int datalen;
+- int dir;
+- struct ip_ct_mms_expect *ct_mms_info;
+-
+- if (!exp)
+- DEBUGP("ip_nat_mms: no exp!!");
+-
+- ct_mms_info = &exp->help.exp_mms_info;
+-
+- /* Only mangle things once: original direction in POST_ROUTING
+- and reply direction on PRE_ROUTING. */
+- dir = CTINFO2DIR(ctinfo);
+- if (!((hooknum == NF_IP_POST_ROUTING && dir == IP_CT_DIR_ORIGINAL)
+- ||(hooknum == NF_IP_PRE_ROUTING && dir == IP_CT_DIR_REPLY))) {
+- DEBUGP("ip_nat_mms: mms_nat_help: not touching dir %s at hook %s\n",
+- dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY",
+- hooknum == NF_IP_POST_ROUTING ? "POSTROUTING"
+- : hooknum == NF_IP_PRE_ROUTING ? "PREROUTING"
+- : hooknum == NF_IP_LOCAL_OUT ? "OUTPUT" : "???");
+- return NF_ACCEPT;
+- }
+- DEBUGP("ip_nat_mms: mms_nat_help: beyond not touching (dir %s at hook %s)\n",
+- dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY",
+- hooknum == NF_IP_POST_ROUTING ? "POSTROUTING"
+- : hooknum == NF_IP_PRE_ROUTING ? "PREROUTING"
+- : hooknum == NF_IP_LOCAL_OUT ? "OUTPUT" : "???");
+-
+- datalen = (*pskb)->len - iph->ihl * 4 - tcph->doff * 4;
+-
+- DEBUGP("ip_nat_mms: mms_nat_help: %u+%u=%u %u %u\n", exp->seq, ct_mms_info->len,
+- exp->seq + ct_mms_info->len,
+- ntohl(tcph->seq),
+- ntohl(tcph->seq) + datalen);
+-
+- LOCK_BH(&ip_mms_lock);
+- /* Check wether the whole IP/proto/port pattern is carried in the payload */
+- if (between(exp->seq + ct_mms_info->len,
+- ntohl(tcph->seq),
+- ntohl(tcph->seq) + datalen)) {
+- if (!mms_data_fixup(ct_mms_info, ct, pskb, ctinfo, exp)) {
+- UNLOCK_BH(&ip_mms_lock);
+- return NF_DROP;
+- }
+- } else {
+- /* Half a match? This means a partial retransmisison.
+- It's a cracker being funky. */
+- if (net_ratelimit()) {
+- printk("ip_nat_mms: partial packet %u/%u in %u/%u\n",
+- exp->seq, ct_mms_info->len,
+- ntohl(tcph->seq),
+- ntohl(tcph->seq) + datalen);
+- }
+- UNLOCK_BH(&ip_mms_lock);
+- return NF_DROP;
+- }
+- UNLOCK_BH(&ip_mms_lock);
+-
+- return NF_ACCEPT;
+-}
+-
+-static struct ip_nat_helper mms[MAX_PORTS];
+-static char mms_names[MAX_PORTS][10];
+-
+-/* Not __exit: called from init() */
+-static void fini(void)
+-{
+- int i;
+-
+- for (i = 0; (i < MAX_PORTS) && ports[i]; i++) {
+- DEBUGP("ip_nat_mms: unregistering helper for port %d\n", ports[i]);
+- ip_nat_helper_unregister(&mms[i]);
+- }
+-}
+-
+-static int __init init(void)
+-{
+- int i, ret = 0;
+- char *tmpname;
+-
+- if (ports[0] == 0)
+- ports[0] = MMS_PORT;
+-
+- for (i = 0; (i < MAX_PORTS) && ports[i]; i++) {
+-
+- memset(&mms[i], 0, sizeof(struct ip_nat_helper));
+-
+- mms[i].tuple.dst.protonum = IPPROTO_TCP;
+- mms[i].tuple.src.u.tcp.port = htons(ports[i]);
+- mms[i].mask.dst.protonum = 0xFFFF;
+- mms[i].mask.src.u.tcp.port = 0xFFFF;
+- mms[i].help = mms_nat_help;
+- mms[i].me = THIS_MODULE;
+- mms[i].flags = 0;
+- mms[i].expect = mms_nat_expected;
+-
+- tmpname = &mms_names[i][0];
+- if (ports[i] == MMS_PORT)
+- sprintf(tmpname, "mms");
+- else
+- sprintf(tmpname, "mms-%d", i);
+- mms[i].name = tmpname;
+-
+- DEBUGP("ip_nat_mms: register helper for port %d\n",
+- ports[i]);
+- ret = ip_nat_helper_register(&mms[i]);
+-
+- if (ret) {
+- printk("ip_nat_mms: error registering "
+- "helper for port %d\n", ports[i]);
+- fini();
+- return ret;
+- }
+- ports_c++;
+- }
+-
+- return ret;
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_nat_pptp.c linux.stock/net/ipv4/netfilter/ip_nat_pptp.c
+--- linux/net/ipv4/netfilter/ip_nat_pptp.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_nat_pptp.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,412 +0,0 @@
+-/*
+- * ip_nat_pptp.c - Version 1.11
+- *
+- * NAT support for PPTP (Point to Point Tunneling Protocol).
+- * PPTP is a a protocol for creating virtual private networks.
+- * It is a specification defined by Microsoft and some vendors
+- * working with Microsoft. PPTP is built on top of a modified
+- * version of the Internet Generic Routing Encapsulation Protocol.
+- * GRE is defined in RFC 1701 and RFC 1702. Documentation of
+- * PPTP can be found in RFC 2637
+- *
+- * (C) 2000-2002 by Harald Welte <laforge@gnumonks.org>
+- *
+- * Development of this code funded by Astaro AG (http://www.astaro.com/)
+- *
+- * TODO: - Support for multiple calls within one session
+- * (needs netfilter newnat code)
+- * - NAT to a unique tuple, not to TCP source port
+- * (needs netfilter tuple reservation)
+- * - Support other NAT scenarios than SNAT of PNS
+- *
+- */
+-
+-#include <linux/config.h>
+-#include <linux/module.h>
+-#include <linux/ip.h>
+-#include <linux/tcp.h>
+-#include <net/tcp.h>
+-#include <linux/netfilter_ipv4/ip_nat.h>
+-#include <linux/netfilter_ipv4/ip_nat_rule.h>
+-#include <linux/netfilter_ipv4/ip_nat_helper.h>
+-#include <linux/netfilter_ipv4/ip_nat_pptp.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
+-
+-MODULE_LICENSE("GPL");
+-MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
+-MODULE_DESCRIPTION("Netfilter NAT helper module for PPTP");
+-
+-
+-#define DEBUGP(format, args...)
+-
+-static unsigned int
+-pptp_nat_expected(struct sk_buff **pskb,
+- unsigned int hooknum,
+- struct ip_conntrack *ct,
+- struct ip_nat_info *info)
+-{
+- struct ip_conntrack *master = master_ct(ct);
+- struct ip_nat_multi_range mr;
+- struct ip_ct_pptp_master *ct_pptp_info;
+- struct ip_nat_pptp *nat_pptp_info;
+- u_int32_t newsrcip, newdstip, newcid;
+- int ret;
+-
+- IP_NF_ASSERT(info);
+- IP_NF_ASSERT(master);
+- IP_NF_ASSERT(!(info->initialized & (1 << HOOK2MANIP(hooknum))));
+-
+- DEBUGP("we have a connection!\n");
+-
+- LOCK_BH(&ip_pptp_lock);
+- ct_pptp_info = &master->help.ct_pptp_info;
+- nat_pptp_info = &master->nat.help.nat_pptp_info;
+-
+- /* need to alter GRE tuple because conntrack expectfn() used 'wrong'
+- * (unmanipulated) values */
+- if (hooknum == NF_IP_PRE_ROUTING) {
+- DEBUGP("completing tuples with NAT info \n");
+- /* we can do this, since we're unconfirmed */
+- if (ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u.gre.key ==
+- htonl(ct_pptp_info->pac_call_id)) {
+- /* assume PNS->PAC */
+- ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.gre.key =
+- htonl(nat_pptp_info->pns_call_id);
+-// ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u.gre.key =
+-// htonl(nat_pptp_info->pac_call_id);
+- ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.gre.key =
+- htonl(nat_pptp_info->pns_call_id);
+- } else {
+- /* assume PAC->PNS */
+- DEBUGP("WRONG DIRECTION\n");
+- ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.gre.key =
+- htonl(nat_pptp_info->pac_call_id);
+- ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u.gre.key =
+- htonl(nat_pptp_info->pns_call_id);
+- }
+- }
+-
+- if (HOOK2MANIP(hooknum) == IP_NAT_MANIP_DST) {
+- newdstip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip;
+- newcid = htonl(master->nat.help.nat_pptp_info.pac_call_id);
+-
+- mr.rangesize = 1;
+- mr.range[0].flags = IP_NAT_RANGE_MAP_IPS | IP_NAT_RANGE_PROTO_SPECIFIED;
+- mr.range[0].min_ip = mr.range[0].max_ip = newdstip;
+- mr.range[0].min = mr.range[0].max =
+- ((union ip_conntrack_manip_proto ) { newcid });
+- DEBUGP("change dest ip to %u.%u.%u.%u\n",
+- NIPQUAD(newdstip));
+- DEBUGP("change dest key to 0x%x\n", ntohl(newcid));
+- ret = ip_nat_setup_info(ct, &mr, hooknum);
+- } else {
+- newsrcip = master->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+- /* nat_multi_range is in network byte order, and GRE tuple
+- * is 32 bits, not 16 like callID */
+- newcid = htonl(master->help.ct_pptp_info.pns_call_id);
+-
+- mr.rangesize = 1;
+- mr.range[0].flags = IP_NAT_RANGE_MAP_IPS
+- |IP_NAT_RANGE_PROTO_SPECIFIED;
+- mr.range[0].min_ip = mr.range[0].max_ip = newsrcip;
+- mr.range[0].min = mr.range[0].max =
+- ((union ip_conntrack_manip_proto ) { newcid });
+- DEBUGP("change src ip to %u.%u.%u.%u\n",
+- NIPQUAD(newsrcip));
+- DEBUGP("change 'src' key to 0x%x\n", ntohl(newcid));
+- ret = ip_nat_setup_info(ct, &mr, hooknum);
+- }
+-
+- UNLOCK_BH(&ip_pptp_lock);
+-
+- return ret;
+-
+-}
+-
+-/* outbound packets == from PNS to PAC */
+-static inline unsigned int
+-pptp_outbound_pkt(struct tcphdr *tcph, struct pptp_pkt_hdr *pptph,
+- size_t datalen,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo,
+- struct ip_conntrack_expect *exp)
+-
+-{
+- struct PptpControlHeader *ctlh;
+- union pptp_ctrl_union pptpReq;
+- struct ip_ct_pptp_master *ct_pptp_info = &ct->help.ct_pptp_info;
+- struct ip_nat_pptp *nat_pptp_info = &ct->nat.help.nat_pptp_info;
+-
+- u_int16_t msg, *cid = NULL, new_callid;
+-
+- ctlh = (struct PptpControlHeader *) ((void *) pptph + sizeof(*pptph));
+- pptpReq.rawreq = (void *) ((void *) ctlh + sizeof(*ctlh));
+-
+- new_callid = htons(ct_pptp_info->pns_call_id);
+-
+- switch (msg = ntohs(ctlh->messageType)) {
+- case PPTP_OUT_CALL_REQUEST:
+- cid = &pptpReq.ocreq->callID;
+-
+- /* save original call ID in nat_info */
+- nat_pptp_info->pns_call_id = ct_pptp_info->pns_call_id;
+-
+- new_callid = tcph->source;
+- /* save new call ID in ct info */
+- ct_pptp_info->pns_call_id = ntohs(new_callid);
+- break;
+- case PPTP_IN_CALL_REPLY:
+- cid = &pptpReq.icreq->callID;
+- break;
+- case PPTP_CALL_CLEAR_REQUEST:
+- cid = &pptpReq.clrreq->callID;
+- break;
+- case PPTP_CALL_DISCONNECT_NOTIFY:
+- cid = &pptpReq.disc->callID;
+- break;
+-
+- default:
+- DEBUGP("unknown outbound packet 0x%04x:%s\n", msg,
+- (msg <= PPTP_MSG_MAX)? strMName[msg]:strMName[0]);
+- /* fall through */
+-
+- case PPTP_SET_LINK_INFO:
+- /* only need to NAT in case PAC is behind NAT box */
+- case PPTP_START_SESSION_REQUEST:
+- case PPTP_START_SESSION_REPLY:
+- case PPTP_STOP_SESSION_REQUEST:
+- case PPTP_STOP_SESSION_REPLY:
+- case PPTP_ECHO_REQUEST:
+- case PPTP_ECHO_REPLY:
+- /* no need to alter packet */
+- return NF_ACCEPT;
+- }
+-
+- IP_NF_ASSERT(cid);
+-
+- DEBUGP("altering call id from 0x%04x to 0x%04x\n",
+- ntohs(*cid), ntohs(new_callid));
+- /* mangle packet */
+- tcph->check = ip_nat_cheat_check(*cid^0xFFFF,
+- new_callid, tcph->check);
+- *cid = new_callid;
+-
+- return NF_ACCEPT;
+-}
+-
+-/* inbound packets == from PAC to PNS */
+-static inline unsigned int
+-pptp_inbound_pkt(struct tcphdr *tcph, struct pptp_pkt_hdr *pptph,
+- size_t datalen,
+- struct ip_conntrack *ct,
+- enum ip_conntrack_info ctinfo,
+- struct ip_conntrack_expect *oldexp)
+-{
+- struct PptpControlHeader *ctlh;
+- union pptp_ctrl_union pptpReq;
+- struct ip_ct_pptp_master *ct_pptp_info = &ct->help.ct_pptp_info;
+- struct ip_nat_pptp *nat_pptp_info = &ct->nat.help.nat_pptp_info;
+-
+- u_int16_t msg, new_cid = 0, new_pcid, *pcid = NULL, *cid = NULL;
+- u_int32_t old_dst_ip;
+-
+- struct ip_conntrack_tuple t;
+-
+- ctlh = (struct PptpControlHeader *) ((void *) pptph + sizeof(*pptph));
+- pptpReq.rawreq = (void *) ((void *) ctlh + sizeof(*ctlh));
+-
+- new_pcid = htons(nat_pptp_info->pns_call_id);
+-
+- switch (msg = ntohs(ctlh->messageType)) {
+- case PPTP_OUT_CALL_REPLY:
+- pcid = &pptpReq.ocack->peersCallID;
+- cid = &pptpReq.ocack->callID;
+- if (!oldexp) {
+- DEBUGP("outcall but no expectation\n");
+- break;
+- }
+- old_dst_ip = oldexp->tuple.dst.ip;
+- t = oldexp->tuple;
+-
+- /* save original PAC call ID in nat_info */
+- nat_pptp_info->pac_call_id = ct_pptp_info->pac_call_id;
+-
+- /* store new callID in ct_info, so conntrack works */
+- //ct_pptp_info->pac_call_id = ntohs(tcph->source);
+- //new_cid = htons(ct_pptp_info->pac_call_id);
+-
+- /* alter expectation */
+- if (t.dst.ip == ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip) {
+- /* expectation for PNS->PAC direction */
+- t.dst.u.gre.key = htonl(ct_pptp_info->pac_call_id);
+- t.src.u.gre.key = htonl(nat_pptp_info->pns_call_id);
+- } else {
+- /* expectation for PAC->PNS direction */
+- t.dst.ip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+- DEBUGP("EXPECTATION IN WRONG DIRECTION!!!\n");
+- }
+-
+- if (!ip_conntrack_change_expect(oldexp, &t)) {
+- DEBUGP("successfully changed expect\n");
+- } else {
+- DEBUGP("can't change expect\n");
+- }
+- ip_ct_gre_keymap_change(oldexp->proto.gre.keymap_orig, &t);
+- /* reply keymap */
+- t.src.ip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.ip;
+- t.dst.ip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+- t.src.u.gre.key = htonl(nat_pptp_info->pac_call_id);
+- t.dst.u.gre.key = htonl(ct_pptp_info->pns_call_id);
+- ip_ct_gre_keymap_change(oldexp->proto.gre.keymap_reply, &t);
+-
+- break;
+- case PPTP_IN_CALL_CONNECT:
+- pcid = &pptpReq.iccon->peersCallID;
+- if (!oldexp)
+- break;
+- old_dst_ip = oldexp->tuple.dst.ip;
+- t = oldexp->tuple;
+-
+- /* alter expectation, no need for callID */
+- if (t.dst.ip == ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.ip) {
+- /* expectation for PNS->PAC direction */
+- t.src.ip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+- } else {
+- /* expectation for PAC->PNS direction */
+- t.dst.ip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.ip;
+- }
+-
+- if (!ip_conntrack_change_expect(oldexp, &t)) {
+- DEBUGP("successfully changed expect\n");
+- } else {
+- DEBUGP("can't change expect\n");
+- }
+- break;
+- case PPTP_IN_CALL_REQUEST:
+- /* only need to nat in case PAC is behind NAT box */
+- break;
+- case PPTP_WAN_ERROR_NOTIFY:
+- pcid = &pptpReq.wanerr->peersCallID;
+- break;
+- default:
+- DEBUGP("unknown inbound packet %s\n",
+- (msg <= PPTP_MSG_MAX)? strMName[msg]:strMName[0]);
+- /* fall through */
+-
+- case PPTP_START_SESSION_REQUEST:
+- case PPTP_START_SESSION_REPLY:
+- case PPTP_STOP_SESSION_REQUEST:
+- case PPTP_ECHO_REQUEST:
+- case PPTP_ECHO_REPLY:
+- /* no need to alter packet */
+- return NF_ACCEPT;
+- }
+-
+- /* mangle packet */
+- IP_NF_ASSERT(pcid);
+- DEBUGP("altering peer call id from 0x%04x to 0x%04x\n",
+- ntohs(*pcid), ntohs(new_pcid));
+- tcph->check = ip_nat_cheat_check(*pcid^0xFFFF,
+- new_pcid, tcph->check);
+- *pcid = new_pcid;
+-
+- if (new_cid) {
+- IP_NF_ASSERT(cid);
+- DEBUGP("altering call id from 0x%04x to 0x%04x\n",
+- ntohs(*cid), ntohs(new_cid));
+- tcph->check = ip_nat_cheat_check(*cid^0xFFFF,
+- new_cid, tcph->check);
+- *cid = new_cid;
+- }
+-
+- /* great, at least we don't need to resize packets */
+- return NF_ACCEPT;
+-}
+-
+-
+-static unsigned int tcp_help(struct ip_conntrack *ct,
+- struct ip_conntrack_expect *exp,
+- struct ip_nat_info *info,
+- enum ip_conntrack_info ctinfo,
+- unsigned int hooknum, struct sk_buff **pskb)
+-{
+- struct iphdr *iph = (*pskb)->nh.iph;
+- struct tcphdr *tcph = (void *) iph + iph->ihl*4;
+- unsigned int datalen = (*pskb)->len - iph->ihl*4 - tcph->doff*4;
+- struct pptp_pkt_hdr *pptph;
+- void *datalimit;
+-
+- int dir;
+-
+- DEBUGP("entering\n");
+-
+- /* Only mangle things once: original direction in POST_ROUTING
+- and reply direction on PRE_ROUTING. */
+- dir = CTINFO2DIR(ctinfo);
+- if (!((hooknum == NF_IP_POST_ROUTING && dir == IP_CT_DIR_ORIGINAL)
+- || (hooknum == NF_IP_PRE_ROUTING && dir == IP_CT_DIR_REPLY))) {
+- DEBUGP("Not touching dir %s at hook %s\n",
+- dir == IP_CT_DIR_ORIGINAL ? "ORIG" : "REPLY",
+- hooknum == NF_IP_POST_ROUTING ? "POSTROUTING"
+- : hooknum == NF_IP_PRE_ROUTING ? "PREROUTING"
+- : hooknum == NF_IP_LOCAL_OUT ? "OUTPUT" : "???");
+- return NF_ACCEPT;
+- }
+-
+- /* if packet is too small, just skip it */
+- if (datalen < sizeof(struct pptp_pkt_hdr)+
+- sizeof(struct PptpControlHeader)) {
+- DEBUGP("pptp packet too short\n");
+- return NF_ACCEPT;
+- }
+-
+-
+- pptph = (struct pptp_pkt_hdr *) ((void *)tcph + tcph->doff*4);
+- datalimit = (void *) pptph + datalen;
+-
+- LOCK_BH(&ip_pptp_lock);
+-
+- if (dir == IP_CT_DIR_ORIGINAL) {
+- /* reuqests sent by client to server (PNS->PAC) */
+- pptp_outbound_pkt(tcph, pptph, datalen, ct, ctinfo, exp);
+- } else {
+- /* response from the server to the client (PAC->PNS) */
+- pptp_inbound_pkt(tcph, pptph, datalen, ct, ctinfo, exp);
+- }
+-
+- UNLOCK_BH(&ip_pptp_lock);
+-
+- return NF_ACCEPT;
+-}
+-
+-/* nat helper struct for control connection */
+-static struct ip_nat_helper pptp_tcp_helper = {
+- { NULL, NULL },
+- "pptp", IP_NAT_HELPER_F_ALWAYS, THIS_MODULE,
+- { { 0, { tcp: { port: __constant_htons(PPTP_CONTROL_PORT) } } },
+- { 0, { 0 }, IPPROTO_TCP } },
+- { { 0, { tcp: { port: 0xFFFF } } },
+- { 0, { 0 }, 0xFFFF } },
+- tcp_help, pptp_nat_expected };
+-
+-
+-static int __init init(void)
+-{
+- DEBUGP("init_module\n" );
+-
+- if (ip_nat_helper_register(&pptp_tcp_helper))
+- return -EIO;
+-
+- return 0;
+-}
+-
+-static void __exit fini(void)
+-{
+- DEBUGP("cleanup_module\n" );
+- ip_nat_helper_unregister(&pptp_tcp_helper);
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_nat_proto_gre.c linux.stock/net/ipv4/netfilter/ip_nat_proto_gre.c
+--- linux/net/ipv4/netfilter/ip_nat_proto_gre.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_nat_proto_gre.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,212 +0,0 @@
+-/*
+- * ip_nat_proto_gre.c - Version 1.11
+- *
+- * NAT protocol helper module for GRE.
+- *
+- * GRE is a generic encapsulation protocol, which is generally not very
+- * suited for NAT, as it has no protocol-specific part as port numbers.
+- *
+- * It has an optional key field, which may help us distinguishing two
+- * connections between the same two hosts.
+- *
+- * GRE is defined in RFC 1701 and RFC 1702, as well as RFC 2784
+- *
+- * PPTP is built on top of a modified version of GRE, and has a mandatory
+- * field called "CallID", which serves us for the same purpose as the key
+- * field in plain GRE.
+- *
+- * Documentation about PPTP can be found in RFC 2637
+- *
+- * (C) 2000-2002 by Harald Welte <laforge@gnumonks.org>
+- *
+- * Development of this code funded by Astaro AG (http://www.astaro.com/)
+- *
+- */
+-
+-#include <linux/config.h>
+-#include <linux/module.h>
+-#include <linux/ip.h>
+-#include <linux/netfilter_ipv4/ip_nat.h>
+-#include <linux/netfilter_ipv4/ip_nat_rule.h>
+-#include <linux/netfilter_ipv4/ip_nat_protocol.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_proto_gre.h>
+-
+-MODULE_LICENSE("GPL");
+-MODULE_AUTHOR("Harald Welte <laforge@gnumonks.org>");
+-MODULE_DESCRIPTION("Netfilter NAT protocol helper module for GRE");
+-
+-#define DEBUGP(x, args...)
+-
+-/* is key in given range between min and max */
+-static int
+-gre_in_range(const struct ip_conntrack_tuple *tuple,
+- enum ip_nat_manip_type maniptype,
+- const union ip_conntrack_manip_proto *min,
+- const union ip_conntrack_manip_proto *max)
+-{
+- return ntohl(tuple->src.u.gre.key) >= ntohl(min->gre.key)
+- && ntohl(tuple->src.u.gre.key) <= ntohl(max->gre.key);
+-}
+-
+-/* generate unique tuple ... */
+-static int
+-gre_unique_tuple(struct ip_conntrack_tuple *tuple,
+- const struct ip_nat_range *range,
+- enum ip_nat_manip_type maniptype,
+- const struct ip_conntrack *conntrack)
+-{
+- u_int32_t min, i, range_size;
+- u_int32_t key = 0, *keyptr;
+-
+- if (maniptype == IP_NAT_MANIP_SRC)
+- keyptr = &tuple->src.u.gre.key;
+- else
+- keyptr = &tuple->dst.u.gre.key;
+-
+- if (!(range->flags & IP_NAT_RANGE_PROTO_SPECIFIED)) {
+-
+- switch (tuple->dst.u.gre.version) {
+- case 0:
+- DEBUGP("NATing GRE version 0 (ct=%p)\n",
+- conntrack);
+- min = 1;
+- range_size = 0xffffffff;
+- break;
+- case GRE_VERSION_PPTP:
+- DEBUGP("%p: NATing GRE PPTP\n",
+- conntrack);
+- min = 1;
+- range_size = 0xffff;
+- break;
+- default:
+- printk(KERN_WARNING "nat_gre: unknown GRE version\n");
+- return 0;
+- break;
+- }
+-
+- } else {
+- min = ntohl(range->min.gre.key);
+- range_size = ntohl(range->max.gre.key) - min + 1;
+- }
+-
+- DEBUGP("min = %u, range_size = %u\n", min, range_size);
+-
+- for (i = 0; i < range_size; i++, key++) {
+- *keyptr = htonl(min + key % range_size);
+- if (!ip_nat_used_tuple(tuple, conntrack))
+- return 1;
+- }
+-
+- DEBUGP("%p: no NAT mapping\n", conntrack);
+-
+- return 0;
+-}
+-
+-/* manipulate a GRE packet according to maniptype */
+-static void
+-gre_manip_pkt(struct iphdr *iph, size_t len,
+- const struct ip_conntrack_manip *manip,
+- enum ip_nat_manip_type maniptype)
+-{
+- struct gre_hdr *greh = (struct gre_hdr *)((u_int32_t *)iph+iph->ihl);
+- struct gre_hdr_pptp *pgreh = (struct gre_hdr_pptp *) greh;
+-
+- /* we only have destination manip of a packet, since 'source key'
+- * is not present in the packet itself */
+- if (maniptype == IP_NAT_MANIP_DST) {
+- /* key manipulation is always dest */
+- switch (greh->version) {
+- case 0:
+- if (!greh->key) {
+- DEBUGP("can't nat GRE w/o key\n");
+- break;
+- }
+- if (greh->csum) {
+- *(gre_csum(greh)) =
+- ip_nat_cheat_check(~*(gre_key(greh)),
+- manip->u.gre.key,
+- *(gre_csum(greh)));
+- }
+- *(gre_key(greh)) = manip->u.gre.key;
+- break;
+- case GRE_VERSION_PPTP:
+- DEBUGP("call_id -> 0x%04x\n",
+- ntohl(manip->u.gre.key));
+- pgreh->call_id = htons(ntohl(manip->u.gre.key));
+- break;
+- default:
+- DEBUGP("can't nat unknown GRE version\n");
+- break;
+- }
+- }
+-}
+-
+-/* print out a nat tuple */
+-static unsigned int
+-gre_print(char *buffer,
+- const struct ip_conntrack_tuple *match,
+- const struct ip_conntrack_tuple *mask)
+-{
+- unsigned int len = 0;
+-
+- if (mask->dst.u.gre.version)
+- len += sprintf(buffer + len, "version=%d ",
+- ntohs(match->dst.u.gre.version));
+-
+- if (mask->dst.u.gre.protocol)
+- len += sprintf(buffer + len, "protocol=0x%x ",
+- ntohs(match->dst.u.gre.protocol));
+-
+- if (mask->src.u.gre.key)
+- len += sprintf(buffer + len, "srckey=0x%x ",
+- ntohl(match->src.u.gre.key));
+-
+- if (mask->dst.u.gre.key)
+- len += sprintf(buffer + len, "dstkey=0x%x ",
+- ntohl(match->src.u.gre.key));
+-
+- return len;
+-}
+-
+-/* print a range of keys */
+-static unsigned int
+-gre_print_range(char *buffer, const struct ip_nat_range *range)
+-{
+- if (range->min.gre.key != 0
+- || range->max.gre.key != 0xFFFF) {
+- if (range->min.gre.key == range->max.gre.key)
+- return sprintf(buffer, "key 0x%x ",
+- ntohl(range->min.gre.key));
+- else
+- return sprintf(buffer, "keys 0x%u-0x%u ",
+- ntohl(range->min.gre.key),
+- ntohl(range->max.gre.key));
+- } else
+- return 0;
+-}
+-
+-/* nat helper struct */
+-static struct ip_nat_protocol gre =
+- { { NULL, NULL }, "GRE", IPPROTO_GRE,
+- gre_manip_pkt,
+- gre_in_range,
+- gre_unique_tuple,
+- gre_print,
+- gre_print_range
+- };
+-
+-static int __init init(void)
+-{
+- if (ip_nat_protocol_register(&gre))
+- return -EIO;
+-
+- return 0;
+-}
+-
+-static void __exit fini(void)
+-{
+- ip_nat_protocol_unregister(&gre);
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_nat_standalone.c linux.stock/net/ipv4/netfilter/ip_nat_standalone.c
+--- linux/net/ipv4/netfilter/ip_nat_standalone.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_nat_standalone.c 2004-05-09 04:13:03.000000000 -0400
+@@ -37,7 +37,11 @@
+ #include <linux/netfilter_ipv4/ip_conntrack_core.h>
+ #include <linux/netfilter_ipv4/listhelp.h>
+
++#if 0
++#define DEBUGP printk
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ #define HOOKNAME(hooknum) ((hooknum) == NF_IP_POST_ROUTING ? "POST_ROUTING" \
+ : ((hooknum) == NF_IP_PRE_ROUTING ? "PRE_ROUTING" \
+@@ -354,6 +358,5 @@
+ EXPORT_SYMBOL(ip_nat_helper_unregister);
+ EXPORT_SYMBOL(ip_nat_cheat_check);
+ EXPORT_SYMBOL(ip_nat_mangle_tcp_packet);
+-EXPORT_SYMBOL(ip_nat_mangle_udp_packet);
+ EXPORT_SYMBOL(ip_nat_used_tuple);
+ MODULE_LICENSE("GPL");
+diff -Nurb linux/net/ipv4/netfilter/ip_nat_tftp.c linux.stock/net/ipv4/netfilter/ip_nat_tftp.c
+--- linux/net/ipv4/netfilter/ip_nat_tftp.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_nat_tftp.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,186 +0,0 @@
+-/*
+- * Licensed under GNU GPL version 2 Copyright Magnus Boden <mb@ozaba.mine.nu>
+- * Version: 0.0.7
+- *
+- * Thu 21 Mar 2002 Harald Welte <laforge@gnumonks.org>
+- * - Port to newnat API
+- *
+- * This module currently supports DNAT:
+- * iptables -t nat -A PREROUTING -d x.x.x.x -j DNAT --to-dest x.x.x.y
+- *
+- * and SNAT:
+- * iptables -t nat -A POSTROUTING { -j MASQUERADE , -j SNAT --to-source x.x.x.x }
+- *
+- * It has not been tested with
+- * -j SNAT --to-source x.x.x.x-x.x.x.y since I only have one external ip
+- * If you do test this please let me know if it works or not.
+- *
+- */
+-
+-#include <linux/module.h>
+-#include <linux/netfilter_ipv4.h>
+-#include <linux/ip.h>
+-#include <linux/udp.h>
+-
+-#include <linux/netfilter.h>
+-#include <linux/netfilter_ipv4/ip_tables.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_helper.h>
+-#include <linux/netfilter_ipv4/ip_conntrack_tftp.h>
+-#include <linux/netfilter_ipv4/ip_nat_helper.h>
+-#include <linux/netfilter_ipv4/ip_nat_rule.h>
+-
+-MODULE_AUTHOR("Magnus Boden <mb@ozaba.mine.nu>");
+-MODULE_DESCRIPTION("Netfilter NAT helper for tftp");
+-MODULE_LICENSE("GPL");
+-
+-#define MAX_PORTS 8
+-
+-static int ports[MAX_PORTS];
+-static int ports_c = 0;
+-#ifdef MODULE_PARM
+-MODULE_PARM(ports,"1-" __MODULE_STRING(MAX_PORTS) "i");
+-MODULE_PARM_DESC(ports, "port numbers of tftp servers");
+-#endif
+-
+-#define DEBUGP(format, args...)
+-static unsigned int
+-tftp_nat_help(struct ip_conntrack *ct,
+- struct ip_conntrack_expect *exp,
+- struct ip_nat_info *info,
+- enum ip_conntrack_info ctinfo,
+- unsigned int hooknum,
+- struct sk_buff **pskb)
+-{
+- int dir = CTINFO2DIR(ctinfo);
+- struct iphdr *iph = (*pskb)->nh.iph;
+- struct udphdr *udph = (void *)iph + iph->ihl * 4;
+- struct tftphdr *tftph = (void *)udph + 8;
+- struct ip_conntrack_tuple repl;
+-
+- if (!((hooknum == NF_IP_POST_ROUTING && dir == IP_CT_DIR_ORIGINAL)
+- || (hooknum == NF_IP_PRE_ROUTING && dir == IP_CT_DIR_REPLY)))
+- return NF_ACCEPT;
+-
+- if (!exp) {
+- DEBUGP("no conntrack expectation to modify\n");
+- return NF_ACCEPT;
+- }
+-
+- switch (ntohs(tftph->opcode)) {
+- /* RRQ and WRQ works the same way */
+- case TFTP_OPCODE_READ:
+- case TFTP_OPCODE_WRITE:
+- repl = ct->tuplehash[IP_CT_DIR_REPLY].tuple;
+- DEBUGP("");
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple);
+- DUMP_TUPLE(&ct->tuplehash[IP_CT_DIR_REPLY].tuple);
+- DEBUGP("expecting: ");
+- DUMP_TUPLE_RAW(&repl);
+- DUMP_TUPLE_RAW(&exp->mask);
+- ip_conntrack_change_expect(exp, &repl);
+- break;
+- default:
+- DEBUGP("Unknown opcode\n");
+- }
+-
+- return NF_ACCEPT;
+-}
+-
+-static unsigned int
+-tftp_nat_expected(struct sk_buff **pskb,
+- unsigned int hooknum,
+- struct ip_conntrack *ct,
+- struct ip_nat_info *info)
+-{
+- const struct ip_conntrack *master = ct->master->expectant;
+- const struct ip_conntrack_tuple *orig =
+- &master->tuplehash[IP_CT_DIR_ORIGINAL].tuple;
+- struct ip_nat_multi_range mr;
+-
+- IP_NF_ASSERT(info);
+- IP_NF_ASSERT(master);
+- IP_NF_ASSERT(!(info->initialized & (1 << HOOK2MANIP(hooknum))));
+-
+- mr.rangesize = 1;
+- mr.range[0].flags = IP_NAT_RANGE_MAP_IPS;
+-
+- if (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC) {
+- mr.range[0].min_ip = mr.range[0].max_ip = orig->dst.ip;
+- DEBUGP("orig: %u.%u.%u.%u:%u <-> %u.%u.%u.%u:%u "
+- "newsrc: %u.%u.%u.%u\n",
+- NIPQUAD((*pskb)->nh.iph->saddr), ntohs(udph->source),
+- NIPQUAD((*pskb)->nh.iph->daddr), ntohs(udph->dest),
+- NIPQUAD(orig->dst.ip));
+- } else {
+- mr.range[0].min_ip = mr.range[0].max_ip = orig->src.ip;
+- mr.range[0].min.udp.port = mr.range[0].max.udp.port =
+- orig->src.u.udp.port;
+- mr.range[0].flags |= IP_NAT_RANGE_PROTO_SPECIFIED;
+-
+- DEBUGP("orig: %u.%u.%u.%u:%u <-> %u.%u.%u.%u:%u "
+- "newdst: %u.%u.%u.%u:%u\n",
+- NIPQUAD((*pskb)->nh.iph->saddr), ntohs(udph->source),
+- NIPQUAD((*pskb)->nh.iph->daddr), ntohs(udph->dest),
+- NIPQUAD(orig->src.ip), ntohs(orig->src.u.udp.port));
+- }
+-
+- return ip_nat_setup_info(ct,&mr,hooknum);
+-}
+-
+-static struct ip_nat_helper tftp[MAX_PORTS];
+-static char tftp_names[MAX_PORTS][10];
+-
+-static void fini(void)
+-{
+- int i;
+-
+- for (i = 0 ; i < ports_c; i++) {
+- DEBUGP("unregistering helper for port %d\n", ports[i]);
+- ip_nat_helper_unregister(&tftp[i]);
+- }
+-}
+-
+-static int __init init(void)
+-{
+- int i, ret;
+- char *tmpname;
+-
+- if (!ports[0])
+- ports[0] = TFTP_PORT;
+-
+- for (i = 0 ; (i < MAX_PORTS) && ports[i] ; i++) {
+- memset(&tftp[i], 0, sizeof(struct ip_nat_helper));
+-
+- tftp[i].tuple.dst.protonum = IPPROTO_UDP;
+- tftp[i].tuple.src.u.udp.port = htons(ports[i]);
+- tftp[i].mask.dst.protonum = 0xFFFF;
+- tftp[i].mask.src.u.udp.port = 0xFFFF;
+- tftp[i].help = tftp_nat_help;
+- tftp[i].flags = 0;
+- tftp[i].me = THIS_MODULE;
+- tftp[i].expect = tftp_nat_expected;
+-
+- tmpname = &tftp_names[i][0];
+- if (ports[i] == TFTP_PORT)
+- sprintf(tmpname, "tftp");
+- else
+- sprintf(tmpname, "tftp-%d", i);
+- tftp[i].name = tmpname;
+-
+- DEBUGP("ip_nat_tftp: registering for port %d: name %s\n",
+- ports[i], tftp[i].name);
+- ret = ip_nat_helper_register(&tftp[i]);
+-
+- if (ret) {
+- printk("ip_nat_tftp: unable to register for port %d\n",
+- ports[i]);
+- fini();
+- return ret;
+- }
+- ports_c++;
+- }
+- return ret;
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_pool.c linux.stock/net/ipv4/netfilter/ip_pool.c
+--- linux/net/ipv4/netfilter/ip_pool.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_pool.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,328 +0,0 @@
+-/* Kernel module for IP pool management */
+-
+-#include <linux/module.h>
+-#include <linux/ip.h>
+-#include <linux/skbuff.h>
+-#include <linux/netfilter_ipv4/ip_tables.h>
+-#include <linux/netfilter_ipv4/ip_pool.h>
+-#include <linux/errno.h>
+-#include <asm/uaccess.h>
+-#include <asm/bitops.h>
+-#include <linux/interrupt.h>
+-#include <linux/spinlock.h>
+-
+-#define DP(format, args...)
+-
+-MODULE_LICENSE("GPL");
+-
+-#define NR_POOL 16
+-static int nr_pool = NR_POOL;/* overwrite this when loading module */
+-
+-struct ip_pool {
+- u_int32_t first_ip; /* host byte order, included in range */
+- u_int32_t last_ip; /* host byte order, included in range */
+- void *members; /* the bitmap proper */
+- int nr_use; /* total nr. of tests through this */
+- int nr_match; /* total nr. of matches through this */
+- rwlock_t lock;
+-};
+-
+-static struct ip_pool *POOL;
+-
+-static inline struct ip_pool *lookup(ip_pool_t index)
+-{
+- if (index < 0 || index >= nr_pool) {
+- DP("ip_pool:lookup: bad index %d\n", index);
+- return 0;
+- }
+- return POOL+index;
+-}
+-
+-int ip_pool_match(ip_pool_t index, u_int32_t addr)
+-{
+- struct ip_pool *pool = lookup(index);
+- int res = 0;
+-
+- if (!pool || !pool->members)
+- return 0;
+- read_lock_bh(&pool->lock);
+- if (pool->members) {
+- if (addr >= pool->first_ip && addr <= pool->last_ip) {
+- addr -= pool->first_ip;
+- if (test_bit(addr, pool->members)) {
+- res = 1;
+-#ifdef CONFIG_IP_POOL_STATISTICS
+- pool->nr_match++;
+-#endif
+- }
+- }
+-#ifdef CONFIG_IP_POOL_STATISTICS
+- pool->nr_use++;
+-#endif
+- }
+- read_unlock_bh(&pool->lock);
+- return res;
+-}
+-
+-static int pool_change(ip_pool_t index, u_int32_t addr, int isdel)
+-{
+- struct ip_pool *pool;
+- int res = -1;
+-
+- pool = lookup(index);
+- if ( !pool || !pool->members
+- || addr < pool->first_ip || addr > pool->last_ip)
+- return -1;
+- read_lock_bh(&pool->lock);
+- if (pool->members && addr >= pool->first_ip && addr <= pool->last_ip) {
+- addr -= pool->first_ip;
+- res = isdel
+- ? (0 != test_and_clear_bit(addr, pool->members))
+- : (0 != test_and_set_bit(addr, pool->members));
+- }
+- read_unlock_bh(&pool->lock);
+- return res;
+-}
+-
+-int ip_pool_mod(ip_pool_t index, u_int32_t addr, int isdel)
+-{
+- int res = pool_change(index,addr,isdel);
+-
+- if (!isdel) res = !res;
+- return res;
+-}
+-
+-static inline int bitmap_bytes(u_int32_t a, u_int32_t b)
+-{
+- return 4*((((b-a+8)/8)+3)/4);
+-}
+-
+-static inline int poolbytes(ip_pool_t index)
+-{
+- struct ip_pool *pool = lookup(index);
+-
+- return pool ? bitmap_bytes(pool->first_ip, pool->last_ip) : 0;
+-}
+-
+-static int setpool(
+- struct sock *sk,
+- int optval,
+- void *user,
+- unsigned int len
+-) {
+- struct ip_pool_request req;
+-
+- DP("ip_pool:setpool: optval=%d, user=%p, len=%d\n", optval, user, len);
+- if (!capable(CAP_NET_ADMIN))
+- return -EPERM;
+- if (optval != SO_IP_POOL)
+- return -EBADF;
+- if (len != sizeof(req))
+- return -EINVAL;
+- if (copy_from_user(&req, user, sizeof(req)) != 0)
+- return -EFAULT;
+- printk("obsolete op - upgrade your ippool(8) utility.\n");
+- return -EINVAL;
+-}
+-
+-static int getpool(
+- struct sock *sk,
+- int optval,
+- void *user,
+- int *len
+-) {
+- struct ip_pool_request req;
+- struct ip_pool *pool;
+- ip_pool_t i;
+- int newbytes;
+- void *newmembers;
+- int res;
+-
+- DP("ip_pool:getpool: optval=%d, user=%p\n", optval, user);
+- if (!capable(CAP_NET_ADMIN))
+- return -EINVAL;
+- if (optval != SO_IP_POOL)
+- return -EINVAL;
+- if (*len != sizeof(req)) {
+- return -EFAULT;
+- }
+- if (copy_from_user(&req, user, sizeof(req)) != 0)
+- return -EFAULT;
+- DP("ip_pool:getpool op=%d, index=%d\n", req.op, req.index);
+- if (req.op < IP_POOL_BAD001) {
+- printk("obsolete op - upgrade your ippool(8) utility.\n");
+- return -EFAULT;
+- }
+- switch(req.op) {
+- case IP_POOL_HIGH_NR:
+- DP("ip_pool HIGH_NR\n");
+- req.index = IP_POOL_NONE;
+- for (i=0; i<nr_pool; i++)
+- if (POOL[i].members)
+- req.index = i;
+- return copy_to_user(user, &req, sizeof(req));
+- case IP_POOL_LOOKUP:
+- DP("ip_pool LOOKUP\n");
+- pool = lookup(req.index);
+- if (!pool)
+- return -EINVAL;
+- if (!pool->members)
+- return -EBADF;
+- req.addr = htonl(pool->first_ip);
+- req.addr2 = htonl(pool->last_ip);
+- return copy_to_user(user, &req, sizeof(req));
+- case IP_POOL_USAGE:
+- DP("ip_pool USE\n");
+- pool = lookup(req.index);
+- if (!pool)
+- return -EINVAL;
+- if (!pool->members)
+- return -EBADF;
+- req.addr = pool->nr_use;
+- req.addr2 = pool->nr_match;
+- return copy_to_user(user, &req, sizeof(req));
+- case IP_POOL_TEST_ADDR:
+- DP("ip_pool TEST 0x%08x\n", req.addr);
+- pool = lookup(req.index);
+- if (!pool)
+- return -EINVAL;
+- res = 0;
+- read_lock_bh(&pool->lock);
+- if (!pool->members) {
+- DP("ip_pool TEST_ADDR no members in pool\n");
+- res = -EBADF;
+- goto unlock_and_return_res;
+- }
+- req.addr = ntohl(req.addr);
+- if (req.addr < pool->first_ip) {
+- DP("ip_pool TEST_ADDR address < pool bounds\n");
+- res = -ERANGE;
+- goto unlock_and_return_res;
+- }
+- if (req.addr > pool->last_ip) {
+- DP("ip_pool TEST_ADDR address > pool bounds\n");
+- res = -ERANGE;
+- goto unlock_and_return_res;
+- }
+- req.addr = (0 != test_bit((req.addr - pool->first_ip),
+- pool->members));
+- read_unlock_bh(&pool->lock);
+- return copy_to_user(user, &req, sizeof(req));
+- case IP_POOL_FLUSH:
+- DP("ip_pool FLUSH not yet implemented.\n");
+- return -EBUSY;
+- case IP_POOL_DESTROY:
+- DP("ip_pool DESTROY not yet implemented.\n");
+- return -EBUSY;
+- case IP_POOL_INIT:
+- DP("ip_pool INIT 0x%08x-0x%08x\n", req.addr, req.addr2);
+- pool = lookup(req.index);
+- if (!pool)
+- return -EINVAL;
+- req.addr = ntohl(req.addr);
+- req.addr2 = ntohl(req.addr2);
+- if (req.addr > req.addr2) {
+- DP("ip_pool INIT bad ip range\n");
+- return -EINVAL;
+- }
+- newbytes = bitmap_bytes(req.addr, req.addr2);
+- newmembers = kmalloc(newbytes, GFP_KERNEL);
+- if (!newmembers) {
+- DP("ip_pool INIT out of mem for %d bytes\n", newbytes);
+- return -ENOMEM;
+- }
+- memset(newmembers, 0, newbytes);
+- write_lock_bh(&pool->lock);
+- if (pool->members) {
+- DP("ip_pool INIT pool %d exists\n", req.index);
+- kfree(newmembers);
+- res = -EBUSY;
+- goto unlock_and_return_res;
+- }
+- pool->first_ip = req.addr;
+- pool->last_ip = req.addr2;
+- pool->nr_use = 0;
+- pool->nr_match = 0;
+- pool->members = newmembers;
+- write_unlock_bh(&pool->lock);
+- return 0;
+- case IP_POOL_ADD_ADDR:
+- DP("ip_pool ADD_ADDR 0x%08x\n", req.addr);
+- req.addr = pool_change(req.index, ntohl(req.addr), 0);
+- return copy_to_user(user, &req, sizeof(req));
+- case IP_POOL_DEL_ADDR:
+- DP("ip_pool DEL_ADDR 0x%08x\n", req.addr);
+- req.addr = pool_change(req.index, ntohl(req.addr), 1);
+- return copy_to_user(user, &req, sizeof(req));
+- default:
+- DP("ip_pool:getpool bad op %d\n", req.op);
+- return -EINVAL;
+- }
+- return -EINVAL;
+-
+-unlock_and_return_res:
+- if (pool)
+- read_unlock_bh(&pool->lock);
+- return res;
+-}
+-
+-static struct nf_sockopt_ops so_pool
+-= { { NULL, NULL }, PF_INET,
+- SO_IP_POOL, SO_IP_POOL+1, &setpool,
+- SO_IP_POOL, SO_IP_POOL+1, &getpool,
+- 0, NULL };
+-
+-MODULE_PARM(nr_pool, "i");
+-
+-static int __init init(void)
+-{
+- ip_pool_t i;
+- int res;
+-
+- if (nr_pool < 1) {
+- printk("ip_pool module init: bad nr_pool %d\n", nr_pool);
+- return -EINVAL;
+- }
+- POOL = kmalloc(nr_pool * sizeof(*POOL), GFP_KERNEL);
+- if (!POOL) {
+- printk("ip_pool module init: out of memory for nr_pool %d\n",
+- nr_pool);
+- return -ENOMEM;
+- }
+- for (i=0; i<nr_pool; i++) {
+- POOL[i].first_ip = 0;
+- POOL[i].last_ip = 0;
+- POOL[i].members = 0;
+- POOL[i].nr_use = 0;
+- POOL[i].nr_match = 0;
+- POOL[i].lock = RW_LOCK_UNLOCKED;
+- }
+- res = nf_register_sockopt(&so_pool);
+- DP("ip_pool:init %d pools, result %d\n", nr_pool, res);
+- if (res != 0) {
+- kfree(POOL);
+- POOL = 0;
+- }
+- return res;
+-}
+-
+-static void __exit fini(void)
+-{
+- ip_pool_t i;
+-
+- DP("ip_pool:fini BYEBYE\n");
+- nf_unregister_sockopt(&so_pool);
+- for (i=0; i<nr_pool; i++) {
+- if (POOL[i].members) {
+- kfree(POOL[i].members);
+- POOL[i].members = 0;
+- }
+- }
+- kfree(POOL);
+- POOL = 0;
+- DP("ip_pool:fini these are the famous last words\n");
+- return;
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv4/netfilter/ip_tables.c linux.stock/net/ipv4/netfilter/ip_tables.c
+--- linux/net/ipv4/netfilter/ip_tables.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ip_tables.c 2004-05-09 04:13:03.000000000 -0400
+@@ -62,6 +62,11 @@
+ #include <linux/netfilter_ipv4/lockhelp.h>
+ #include <linux/netfilter_ipv4/listhelp.h>
+
++#if 0
++/* All the better to debug you with... */
++#define static
++#define inline
++#endif
+
+ /* Locking is simple: we assume at worst case there will be one packet
+ in user context and one from bottom halves (or soft irq if Alexey's
+@@ -83,6 +88,7 @@
+ {
+ /* Size per table */
+ unsigned int size;
++ /* Number of entries: FIXME. --RR */
+ unsigned int number;
+ /* Initial number of entries. Needed for module usage count */
+ unsigned int initial_entries;
+@@ -106,6 +112,11 @@
+ #define TABLE_OFFSET(t,p) 0
+ #endif
+
++#if 0
++#define down(x) do { printk("DOWN:%u:" #x "\n", __LINE__); down(x); } while(0)
++#define down_interruptible(x) ({ int __r; printk("DOWNi:%u:" #x "\n", __LINE__); __r = down_interruptible(x); if (__r != 0) printk("ABORT-DOWNi:%u\n", __LINE__); __r; })
++#define up(x) do { printk("UP:%u:" #x "\n", __LINE__); up(x); } while(0)
++#endif
+
+ /* Returns whether matches rule or not. */
+ static inline int
+@@ -408,6 +419,12 @@
+ {
+ void *ret;
+
++#if 0
++ duprintf("find_inlist: searching for `%s' in %s.\n",
++ name, head == &ipt_target ? "ipt_target"
++ : head == &ipt_match ? "ipt_match"
++ : head == &ipt_tables ? "ipt_tables" : "UNKNOWN");
++#endif
+
+ *error = down_interruptible(mutex);
+ if (*error != 0)
+@@ -745,6 +762,8 @@
+ newinfo->underflow[h] = underflows[h];
+ }
+
++ /* FIXME: underflows must be unconditional, standard verdicts
++ < 0 (not IPT_RETURN). --RR */
+
+ /* Clear counters and comefrom */
+ e->counters = ((struct ipt_counters) { 0, 0 });
+@@ -957,6 +976,7 @@
+ goto free_counters;
+ }
+
++ /* FIXME: use iterator macros --RR */
+ /* ... then go back and fix counters and names */
+ for (off = 0, num = 0; off < total_size; off += e->next_offset, num++){
+ unsigned int i;
+@@ -1134,6 +1154,14 @@
+ const struct ipt_counters addme[],
+ unsigned int *i)
+ {
++#if 0
++ duprintf("add_counter: Entry %u %lu/%lu + %lu/%lu\n",
++ *i,
++ (long unsigned int)e->counters.pcnt,
++ (long unsigned int)e->counters.bcnt,
++ (long unsigned int)addme[*i].pcnt,
++ (long unsigned int)addme[*i].bcnt);
++#endif
+
+ ADD_COUNTER(e->counters, addme[*i].bcnt, addme[*i].pcnt);
+
+@@ -1495,6 +1523,7 @@
+ return 0;
+ }
+
++ /* FIXME: Try tcp doff >> packet len against various stacks --RR */
+
+ #define FWINVTCP(bool,invflg) ((bool) ^ !!(tcpinfo->invflags & invflg))
+
+@@ -1670,15 +1699,14 @@
+ = { { NULL, NULL }, "icmp", &icmp_match, &icmp_checkentry, NULL };
+
+ #ifdef CONFIG_PROC_FS
+-static inline int print_name(const char *i,
++static inline int print_name(const struct ipt_table *t,
+ off_t start_offset, char *buffer, int length,
+ off_t *pos, unsigned int *count)
+ {
+ if ((*count)++ >= start_offset) {
+ unsigned int namelen;
+
+- namelen = sprintf(buffer + *pos, "%s\n",
+- i + sizeof(struct list_head));
++ namelen = sprintf(buffer + *pos, "%s\n", t->name);
+ if (*pos + namelen > length) {
+ /* Stop iterating */
+ return 1;
+@@ -1696,7 +1724,7 @@
+ if (down_interruptible(&ipt_mutex) != 0)
+ return 0;
+
+- LIST_FIND(&ipt_tables, print_name, void *,
++ LIST_FIND(&ipt_tables, print_name, struct ipt_table *,
+ offset, buffer, length, &pos, &count);
+
+ up(&ipt_mutex);
+@@ -1705,46 +1733,6 @@
+ *start=(char *)((unsigned long)count-offset);
+ return pos;
+ }
+-
+-static int ipt_get_targets(char *buffer, char **start, off_t offset, int length)
+-{
+- off_t pos = 0;
+- unsigned int count = 0;
+-
+- if (down_interruptible(&ipt_mutex) != 0)
+- return 0;
+-
+- LIST_FIND(&ipt_target, print_name, void *,
+- offset, buffer, length, &pos, &count);
+-
+- up(&ipt_mutex);
+-
+- *start = (char *)((unsigned long)count - offset);
+- return pos;
+-}
+-
+-static int ipt_get_matches(char *buffer, char **start, off_t offset, int length)
+-{
+- off_t pos = 0;
+- unsigned int count = 0;
+-
+- if (down_interruptible(&ipt_mutex) != 0)
+- return 0;
+-
+- LIST_FIND(&ipt_match, print_name, void *,
+- offset, buffer, length, &pos, &count);
+-
+- up(&ipt_mutex);
+-
+- *start = (char *)((unsigned long)count - offset);
+- return pos;
+-}
+-
+-static struct { char *name; get_info_t *get_info; } ipt_proc_entry[] =
+-{ { "ip_tables_names", ipt_get_tables },
+- { "ip_tables_targets", ipt_get_targets },
+- { "ip_tables_matches", ipt_get_matches },
+- { NULL, NULL} };
+ #endif /*CONFIG_PROC_FS*/
+
+ static int __init init(void)
+@@ -1770,20 +1758,14 @@
+ #ifdef CONFIG_PROC_FS
+ {
+ struct proc_dir_entry *proc;
+- int i;
+
+- for (i = 0; ipt_proc_entry[i].name; i++) {
+- proc = proc_net_create(ipt_proc_entry[i].name, 0,
+- ipt_proc_entry[i].get_info);
++ proc = proc_net_create("ip_tables_names", 0, ipt_get_tables);
+ if (!proc) {
+- while (--i >= 0)
+- proc_net_remove(ipt_proc_entry[i].name);
+ nf_unregister_sockopt(&ipt_sockopts);
+ return -ENOMEM;
+ }
+ proc->owner = THIS_MODULE;
+ }
+- }
+ #endif
+
+ printk("ip_tables: (C) 2000-2002 Netfilter core team\n");
+@@ -1794,11 +1776,7 @@
+ {
+ nf_unregister_sockopt(&ipt_sockopts);
+ #ifdef CONFIG_PROC_FS
+- {
+- int i;
+- for (i = 0; ipt_proc_entry[i].name; i++)
+- proc_net_remove(ipt_proc_entry[i].name);
+- }
++ proc_net_remove("ip_tables_names");
+ #endif
+ }
+
+diff -Nurb linux/net/ipv4/netfilter/ipchains_core.c linux.stock/net/ipv4/netfilter/ipchains_core.c
+--- linux/net/ipv4/netfilter/ipchains_core.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ipchains_core.c 2004-05-09 04:13:03.000000000 -0400
+@@ -977,10 +977,17 @@
+ || ftmp->ipfw.fw_dst.s_addr!=frwl->ipfw.fw_dst.s_addr
+ || ftmp->ipfw.fw_smsk.s_addr!=frwl->ipfw.fw_smsk.s_addr
+ || ftmp->ipfw.fw_dmsk.s_addr!=frwl->ipfw.fw_dmsk.s_addr
++#if 0
++ || ftmp->ipfw.fw_flg!=frwl->ipfw.fw_flg
++#else
+ || ((ftmp->ipfw.fw_flg & ~IP_FW_F_MARKABS)
+ != (frwl->ipfw.fw_flg & ~IP_FW_F_MARKABS))
++#endif
+ || ftmp->ipfw.fw_invflg!=frwl->ipfw.fw_invflg
+ || ftmp->ipfw.fw_proto!=frwl->ipfw.fw_proto
++#if 0
++ || ftmp->ipfw.fw_mark!=frwl->ipfw.fw_mark
++#endif
+ || ftmp->ipfw.fw_redirpt!=frwl->ipfw.fw_redirpt
+ || ftmp->ipfw.fw_spts[0]!=frwl->ipfw.fw_spts[0]
+ || ftmp->ipfw.fw_spts[1]!=frwl->ipfw.fw_spts[1]
+@@ -1566,6 +1573,7 @@
+ )
+ {
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,29)
++ /* FIXME: No more `atomic' read and reset. Wonderful 8-( --RR */
+ int reset = 0;
+ #endif
+ struct ip_chain *i;
+diff -Nurb linux/net/ipv4/netfilter/ipfwadm_core.c linux.stock/net/ipv4/netfilter/ipfwadm_core.c
+--- linux/net/ipv4/netfilter/ipfwadm_core.c 2003-10-14 04:09:33.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ipfwadm_core.c 2004-05-09 04:13:03.000000000 -0400
+@@ -20,7 +20,7 @@
+ * license in recognition of the original copyright.
+ * -- Alan Cox.
+ *
+- * $Id: ipfwadm_core.c,v 1.1.1.4 2003/10/14 08:09:33 sparq Exp $
++ * $Id: ipfwadm_core.c,v 1.9.2.2 2002/01/24 15:50:42 davem Exp $
+ *
+ * Ported from BSD to Linux,
+ * Alan Cox 22/Nov/1994.
+@@ -1205,6 +1205,7 @@
+ )
+ {
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,29)
++ /* FIXME: No more `atomic' read and reset. Wonderful 8-( --RR */
+ int reset = 0;
+ #endif
+ return ip_chain_procinfo(IP_FW_ACCT, buffer,start, offset,length,
+@@ -1223,6 +1224,7 @@
+ )
+ {
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,29)
++ /* FIXME: No more `atomic' read and reset. Wonderful 8-( --RR */
+ int reset = 0;
+ #endif
+ return ip_chain_procinfo(IP_FW_IN, buffer,start,offset,length,
+@@ -1237,6 +1239,7 @@
+ )
+ {
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,29)
++ /* FIXME: No more `atomic' read and reset. Wonderful 8-( --RR */
+ int reset = 0;
+ #endif
+ return ip_chain_procinfo(IP_FW_OUT, buffer,start,offset,length,
+@@ -1251,6 +1254,7 @@
+ )
+ {
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,29)
++ /* FIXME: No more `atomic' read and reset. Wonderful 8-( --RR */
+ int reset = 0;
+ #endif
+ return ip_chain_procinfo(IP_FW_FWD, buffer,start,offset,length,
+diff -Nurb linux/net/ipv4/netfilter/ipt_ECN.c linux.stock/net/ipv4/netfilter/ipt_ECN.c
+--- linux/net/ipv4/netfilter/ipt_ECN.c 2003-10-14 04:02:57.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ipt_ECN.c 2004-05-09 04:13:03.000000000 -0400
+@@ -87,8 +87,8 @@
+ }
+
+ if (diffs[0] != *tcpflags) {
+- diffs[0] = diffs[0] ^ 0xFFFF;
+- diffs[1] = *tcpflags;
++ diffs[0] = htons(diffs[0]) ^ 0xFFFF;
++ diffs[1] = htons(*tcpflags);
+ tcph->check = csum_fold(csum_partial((char *)diffs,
+ sizeof(diffs),
+ tcph->check^0xFFFF));
+diff -Nurb linux/net/ipv4/netfilter/ipt_LOG.c linux.stock/net/ipv4/netfilter/ipt_LOG.c
+--- linux/net/ipv4/netfilter/ipt_LOG.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ipt_LOG.c 2004-05-09 04:13:03.000000000 -0400
+@@ -14,11 +14,15 @@
+ #include <net/route.h>
+ #include <linux/netfilter_ipv4/ipt_LOG.h>
+
++#if 0
++#define DEBUGP printk
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ struct esphdr {
+ __u32 spi;
+-};
++}; /* FIXME evil kludge */
+
+ /* Use lock to serialize, so printks don't overlap */
+ static spinlock_t log_lock = SPIN_LOCK_UNLOCKED;
+diff -Nurb linux/net/ipv4/netfilter/ipt_REJECT.c linux.stock/net/ipv4/netfilter/ipt_REJECT.c
+--- linux/net/ipv4/netfilter/ipt_REJECT.c 2003-07-04 04:12:31.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ipt_REJECT.c 2004-05-09 04:13:03.000000000 -0400
+@@ -6,8 +6,6 @@
+ #include <linux/module.h>
+ #include <linux/skbuff.h>
+ #include <linux/ip.h>
+-#include <linux/udp.h>
+-#include <linux/icmp.h>
+ #include <net/icmp.h>
+ #include <net/ip.h>
+ #include <net/tcp.h>
+@@ -16,7 +14,11 @@
+ #include <linux/netfilter_ipv4/ip_tables.h>
+ #include <linux/netfilter_ipv4/ipt_REJECT.h>
+
++#if 0
++#define DEBUGP printk
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ /* If the original packet is part of a connection, but the connection
+ is not confirmed, our manufactured reply will not be associated
+@@ -155,7 +157,6 @@
+ static void send_unreach(struct sk_buff *skb_in, int code)
+ {
+ struct iphdr *iph;
+- struct udphdr *udph;
+ struct icmphdr *icmph;
+ struct sk_buff *nskb;
+ u32 saddr;
+@@ -167,6 +168,7 @@
+ if (!rt)
+ return;
+
++ /* FIXME: Use sysctl number. --RR */
+ if (!xrlim_allow(&rt->u.dst, 1*HZ))
+ return;
+
+@@ -184,19 +186,6 @@
+ if (iph->frag_off&htons(IP_OFFSET))
+ return;
+
+- /* if UDP checksum is set, verify it's correct */
+- if (iph->protocol == IPPROTO_UDP
+- && skb_in->tail-(u8*)iph >= sizeof(struct udphdr)) {
+- int datalen = skb_in->len - (iph->ihl<<2);
+- udph = (struct udphdr *)((char *)iph + (iph->ihl<<2));
+- if (udph->check
+- && csum_tcpudp_magic(iph->saddr, iph->daddr,
+- datalen, IPPROTO_UDP,
+- csum_partial((char *)udph, datalen,
+- 0)) != 0)
+- return;
+- }
+-
+ /* If we send an ICMP error to an ICMP error a mess would result.. */
+ if (iph->protocol == IPPROTO_ICMP
+ && skb_in->tail-(u8*)iph >= sizeof(struct icmphdr)) {
+@@ -271,6 +260,7 @@
+ /* Copy as much of original packet as will fit */
+ data = skb_put(nskb,
+ length - sizeof(struct iphdr) - sizeof(struct icmphdr));
++ /* FIXME: won't work with nonlinear skbs --RR */
+ memcpy(data, skb_in->nh.iph,
+ length - sizeof(struct iphdr) - sizeof(struct icmphdr));
+ icmph->checksum = ip_compute_csum((unsigned char *)icmph,
+diff -Nurb linux/net/ipv4/netfilter/ipt_ULOG.c linux.stock/net/ipv4/netfilter/ipt_ULOG.c
+--- linux/net/ipv4/netfilter/ipt_ULOG.c 2003-07-04 04:12:32.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ipt_ULOG.c 2004-05-09 04:13:03.000000000 -0400
+@@ -12,7 +12,6 @@
+ * module loadtime -HW
+ * 2002/07/07 remove broken nflog_rcv() function -HW
+ * 2002/08/29 fix shifted/unshifted nlgroup bug -HW
+- * 2002/10/30 fix uninitialized mac_len field - <Anders K. Pedersen>
+ *
+ * Released under the terms of the GPL
+ *
+@@ -32,7 +31,7 @@
+ * Specify, after how many clock ticks (intel: 100 per second) the queue
+ * should be flushed even if it is not full yet.
+ *
+- * ipt_ULOG.c,v 1.22 2002/10/30 09:07:31 laforge Exp
++ * ipt_ULOG.c,v 1.21 2002/08/29 10:54:34 laforge Exp
+ */
+
+ #include <linux/module.h>
+@@ -60,7 +59,12 @@
+ #define ULOG_NL_EVENT 111 /* Harald's favorite number */
+ #define ULOG_MAXNLGROUPS 32 /* numer of nlgroups */
+
++#if 0
++#define DEBUGP(format, args...) printk(__FILE__ ":" __FUNCTION__ ":" \
++ format, ## args)
++#else
+ #define DEBUGP(format, args...)
++#endif
+
+ #define PRINTR(format, args...) do { if (net_ratelimit()) printk(format, ## args); } while (0)
+
+@@ -220,8 +224,7 @@
+ && in->hard_header_len <= ULOG_MAC_LEN) {
+ memcpy(pm->mac, (*pskb)->mac.raw, in->hard_header_len);
+ pm->mac_len = in->hard_header_len;
+- } else
+- pm->mac_len = 0;
++ }
+
+ if (in)
+ strncpy(pm->indev_name, in->name, sizeof(pm->indev_name));
+diff -Nurb linux/net/ipv4/netfilter/ipt_multiport.c linux.stock/net/ipv4/netfilter/ipt_multiport.c
+--- linux/net/ipv4/netfilter/ipt_multiport.c 2003-07-04 04:12:32.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ipt_multiport.c 2004-05-09 04:13:03.000000000 -0400
+@@ -8,7 +8,11 @@
+ #include <linux/netfilter_ipv4/ipt_multiport.h>
+ #include <linux/netfilter_ipv4/ip_tables.h>
+
++#if 0
++#define duprintf(format, args...) printk(format , ## args)
++#else
+ #define duprintf(format, args...)
++#endif
+
+ /* Returns 1 if the port is matched by the test, 0 otherwise. */
+ static inline int
+@@ -74,7 +78,7 @@
+
+ /* Must specify proto == TCP/UDP, no unknown flags or bad count */
+ return (ip->proto == IPPROTO_TCP || ip->proto == IPPROTO_UDP)
+- && !(ip->invflags & IPT_INV_PROTO)
++ && !(ip->flags & IPT_INV_PROTO)
+ && matchsize == IPT_ALIGN(sizeof(struct ipt_multiport))
+ && (multiinfo->flags == IPT_MULTIPORT_SOURCE
+ || multiinfo->flags == IPT_MULTIPORT_DESTINATION
+diff -Nurb linux/net/ipv4/netfilter/ipt_pool.c linux.stock/net/ipv4/netfilter/ipt_pool.c
+--- linux/net/ipv4/netfilter/ipt_pool.c 2003-07-04 04:12:32.000000000 -0400
++++ linux.stock/net/ipv4/netfilter/ipt_pool.c 1969-12-31 19:00:00.000000000 -0500
+@@ -1,71 +0,0 @@
+-/* Kernel module to match an IP address pool. */
+-
+-#include <linux/module.h>
+-#include <linux/ip.h>
+-#include <linux/skbuff.h>
+-
+-#include <linux/netfilter_ipv4/ip_tables.h>
+-#include <linux/netfilter_ipv4/ip_pool.h>
+-#include <linux/netfilter_ipv4/ipt_pool.h>
+-
+-static inline int match_pool(
+- ip_pool_t index,
+- __u32 addr,
+- int inv
+-) {
+- if (ip_pool_match(index, ntohl(addr)))
+- inv = !inv;
+- return inv;
+-}
+-
+-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_pool_info *info = matchinfo;
+- const struct iphdr *iph = skb->nh.iph;
+-
+- if (info->src != IP_POOL_NONE && !match_pool(info->src, iph->saddr,
+- info->flags&IPT_POOL_INV_SRC))
+- return 0;
+-
+- if (info->dst != IP_POOL_NONE && !match_pool(info->dst, iph->daddr,
+- info->flags&IPT_POOL_INV_DST))
+- return 0;
+-
+- return 1;
+-}
+-
+-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_pool_info)))
+- return 0;
+- return 1;
+-}
+-
+-static struct ipt_match pool_match
+-= { { NULL, NULL }, "pool", &match, &checkentry, NULL, THIS_MODULE };
+-
+-static int __init init(void)
+-{
+- return ipt_register_match(&pool_match);
+-}
+-
+-static void __exit fini(void)
+-{
+- ipt_unregister_match(&pool_match);
+-}
+-
+-module_init(init);
+-module_exit(fini);
+diff -Nurb linux/net/ipv6/mcast.c linux.stock/net/ipv6/mcast.c
+--- linux/net/ipv6/mcast.c 2003-10-14 04:09:34.000000000 -0400
++++ linux.stock/net/ipv6/mcast.c 2004-05-09 04:13:22.000000000 -0400
+@@ -5,7 +5,7 @@
+ * Authors:
+ * Pedro Roque <roque@di.fc.ul.pt>
+ *
+- * $Id: mcast.c,v 1.1.1.4 2003/10/14 08:09:34 sparq Exp $
++ * $Id: mcast.c,v 1.38 2001/08/15 07:36:31 davem Exp $
+ *
+ * Based on linux/ipv4/igmp.c and linux/ipv4/ip_sockglue.c
+ *
+--- linux/include/linux/ppp-comp.h 2004-08-16 20:58:32.089851872 -0400
++++ linux.stock/include/linux/ppp-comp.h 2004-08-16 20:59:48.217278744 -0400
+@@ -24,7 +24,7 @@
+ * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
+ * OR MODIFICATIONS.
+ *
+- * $Id: ppp-comp.h,v 1.1.1.4 2003/10/14 08:09:26 sparq Exp $
++ * $Id: ppp-comp.h,v 1.6 1997/11/27 06:04:44 paulus Exp $
+ */
+
+ /*
projects / openwrt.git / commitdiff