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r: 9080
b: refs/heads/master
c: 926b50f
h: refs/heads/master
v: v3
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Harald Welte authored and David S. Miller committed Sep 19, 2005
1 parent 6c5a92e commit 73eb82c
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 772cb712b1373d335ef2874ea357ec681edc754b
refs/heads/master: 926b50f92a30090da2c1a8675de954c2d9b09732
12 changes: 12 additions & 0 deletions trunk/include/linux/netfilter_ipv4/ip_conntrack.h
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Expand Up @@ -133,11 +133,13 @@ enum ip_conntrack_expect_events {

#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>
#include <linux/netfilter_ipv4/ip_conntrack_sctp.h>

/* per conntrack: protocol private data */
union ip_conntrack_proto {
/* insert conntrack proto private data here */
struct ip_ct_gre gre;
struct ip_ct_sctp sctp;
struct ip_ct_tcp tcp;
struct ip_ct_icmp icmp;
Expand All @@ -148,19 +150,28 @@ union ip_conntrack_expect_proto {
};

/* Add protocol helper include file here */
#include <linux/netfilter_ipv4/ip_conntrack_pptp.h>
#include <linux/netfilter_ipv4/ip_conntrack_amanda.h>
#include <linux/netfilter_ipv4/ip_conntrack_ftp.h>
#include <linux/netfilter_ipv4/ip_conntrack_irc.h>

/* 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_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

#include <linux/types.h>
Expand Down Expand Up @@ -223,6 +234,7 @@ struct ip_conntrack
#ifdef CONFIG_IP_NF_NAT_NEEDED
struct {
struct ip_nat_info info;
union ip_conntrack_nat_help help;
#if defined(CONFIG_IP_NF_TARGET_MASQUERADE) || \
defined(CONFIG_IP_NF_TARGET_MASQUERADE_MODULE)
int masq_index;
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332 changes: 332 additions & 0 deletions trunk/include/linux/netfilter_ipv4/ip_conntrack_pptp.h
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/* 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 */

/* in pre-2.6.11 this used to be per-expect. Now it is per-conntrack
* and therefore imposes a fixed limit on the number of maps */
struct ip_ct_gre_keymap *keymap_orig, *keymap_reply;
};

/* 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__

#define IP_CONNTR_PPTP PPTP_CONTROL_PORT

#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;
};

union pptp_ctrl_union {
struct PptpStartSessionRequest sreq;
struct PptpStartSessionReply srep;
struct PptpStopSessionRequest 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;
};

extern int
(*ip_nat_pptp_hook_outbound)(struct sk_buff **pskb,
struct ip_conntrack *ct,
enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq);

extern int
(*ip_nat_pptp_hook_inbound)(struct sk_buff **pskb,
struct ip_conntrack *ct,
enum ip_conntrack_info ctinfo,
struct PptpControlHeader *ctlh,
union pptp_ctrl_union *pptpReq);

extern int
(*ip_nat_pptp_hook_exp_gre)(struct ip_conntrack_expect *exp_orig,
struct ip_conntrack_expect *exp_reply);

extern void
(*ip_nat_pptp_hook_expectfn)(struct ip_conntrack *ct,
struct ip_conntrack_expect *exp);
#endif /* __KERNEL__ */
#endif /* _CONNTRACK_PPTP_H */
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