Patrick McHardy | f09943f | 2006-12-02 22:09:41 -0800 | [diff] [blame] | 1 | /* PPTP constants and structs */ |
| 2 | #ifndef _NF_CONNTRACK_PPTP_H |
| 3 | #define _NF_CONNTRACK_PPTP_H |
| 4 | |
Yasuyuki Kozakai | 9ee0779 | 2006-12-05 13:44:31 -0800 | [diff] [blame] | 5 | #include <linux/netfilter/nf_conntrack_common.h> |
| 6 | |
Jan Engelhardt | 9ddd0ed | 2008-01-31 04:51:23 -0800 | [diff] [blame] | 7 | extern const char *const pptp_msg_name[]; |
Patrick McHardy | 0d53778 | 2007-07-07 22:39:38 -0700 | [diff] [blame] | 8 | |
Patrick McHardy | f09943f | 2006-12-02 22:09:41 -0800 | [diff] [blame] | 9 | /* state of the control session */ |
| 10 | enum pptp_ctrlsess_state { |
| 11 | PPTP_SESSION_NONE, /* no session present */ |
| 12 | PPTP_SESSION_ERROR, /* some session error */ |
| 13 | PPTP_SESSION_STOPREQ, /* stop_sess request seen */ |
| 14 | PPTP_SESSION_REQUESTED, /* start_sess request seen */ |
| 15 | PPTP_SESSION_CONFIRMED, /* session established */ |
| 16 | }; |
| 17 | |
| 18 | /* state of the call inside the control session */ |
| 19 | enum pptp_ctrlcall_state { |
| 20 | PPTP_CALL_NONE, |
| 21 | PPTP_CALL_ERROR, |
| 22 | PPTP_CALL_OUT_REQ, |
| 23 | PPTP_CALL_OUT_CONF, |
| 24 | PPTP_CALL_IN_REQ, |
| 25 | PPTP_CALL_IN_REP, |
| 26 | PPTP_CALL_IN_CONF, |
| 27 | PPTP_CALL_CLEAR_REQ, |
| 28 | }; |
| 29 | |
| 30 | /* conntrack private data */ |
| 31 | struct nf_ct_pptp_master { |
| 32 | enum pptp_ctrlsess_state sstate; /* session state */ |
| 33 | enum pptp_ctrlcall_state cstate; /* call state */ |
| 34 | __be16 pac_call_id; /* call id of PAC */ |
| 35 | __be16 pns_call_id; /* call id of PNS */ |
| 36 | |
| 37 | /* in pre-2.6.11 this used to be per-expect. Now it is per-conntrack |
| 38 | * and therefore imposes a fixed limit on the number of maps */ |
| 39 | struct nf_ct_gre_keymap *keymap[IP_CT_DIR_MAX]; |
| 40 | }; |
| 41 | |
| 42 | struct nf_nat_pptp { |
| 43 | __be16 pns_call_id; /* NAT'ed PNS call id */ |
| 44 | __be16 pac_call_id; /* NAT'ed PAC call id */ |
| 45 | }; |
| 46 | |
| 47 | #ifdef __KERNEL__ |
| 48 | |
| 49 | #define PPTP_CONTROL_PORT 1723 |
| 50 | |
| 51 | #define PPTP_PACKET_CONTROL 1 |
| 52 | #define PPTP_PACKET_MGMT 2 |
| 53 | |
| 54 | #define PPTP_MAGIC_COOKIE 0x1a2b3c4d |
| 55 | |
| 56 | struct pptp_pkt_hdr { |
| 57 | __u16 packetLength; |
| 58 | __be16 packetType; |
| 59 | __be32 magicCookie; |
| 60 | }; |
| 61 | |
| 62 | /* PptpControlMessageType values */ |
| 63 | #define PPTP_START_SESSION_REQUEST 1 |
| 64 | #define PPTP_START_SESSION_REPLY 2 |
| 65 | #define PPTP_STOP_SESSION_REQUEST 3 |
| 66 | #define PPTP_STOP_SESSION_REPLY 4 |
| 67 | #define PPTP_ECHO_REQUEST 5 |
| 68 | #define PPTP_ECHO_REPLY 6 |
| 69 | #define PPTP_OUT_CALL_REQUEST 7 |
| 70 | #define PPTP_OUT_CALL_REPLY 8 |
| 71 | #define PPTP_IN_CALL_REQUEST 9 |
| 72 | #define PPTP_IN_CALL_REPLY 10 |
| 73 | #define PPTP_IN_CALL_CONNECT 11 |
| 74 | #define PPTP_CALL_CLEAR_REQUEST 12 |
| 75 | #define PPTP_CALL_DISCONNECT_NOTIFY 13 |
| 76 | #define PPTP_WAN_ERROR_NOTIFY 14 |
| 77 | #define PPTP_SET_LINK_INFO 15 |
| 78 | |
| 79 | #define PPTP_MSG_MAX 15 |
| 80 | |
| 81 | /* PptpGeneralError values */ |
| 82 | #define PPTP_ERROR_CODE_NONE 0 |
| 83 | #define PPTP_NOT_CONNECTED 1 |
| 84 | #define PPTP_BAD_FORMAT 2 |
| 85 | #define PPTP_BAD_VALUE 3 |
| 86 | #define PPTP_NO_RESOURCE 4 |
| 87 | #define PPTP_BAD_CALLID 5 |
| 88 | #define PPTP_REMOVE_DEVICE_ERROR 6 |
| 89 | |
| 90 | struct PptpControlHeader { |
| 91 | __be16 messageType; |
| 92 | __u16 reserved; |
| 93 | }; |
| 94 | |
| 95 | /* FramingCapability Bitmap Values */ |
| 96 | #define PPTP_FRAME_CAP_ASYNC 0x1 |
| 97 | #define PPTP_FRAME_CAP_SYNC 0x2 |
| 98 | |
| 99 | /* BearerCapability Bitmap Values */ |
| 100 | #define PPTP_BEARER_CAP_ANALOG 0x1 |
| 101 | #define PPTP_BEARER_CAP_DIGITAL 0x2 |
| 102 | |
| 103 | struct PptpStartSessionRequest { |
| 104 | __be16 protocolVersion; |
| 105 | __u16 reserved1; |
| 106 | __be32 framingCapability; |
| 107 | __be32 bearerCapability; |
| 108 | __be16 maxChannels; |
| 109 | __be16 firmwareRevision; |
| 110 | __u8 hostName[64]; |
| 111 | __u8 vendorString[64]; |
| 112 | }; |
| 113 | |
| 114 | /* PptpStartSessionResultCode Values */ |
| 115 | #define PPTP_START_OK 1 |
| 116 | #define PPTP_START_GENERAL_ERROR 2 |
| 117 | #define PPTP_START_ALREADY_CONNECTED 3 |
| 118 | #define PPTP_START_NOT_AUTHORIZED 4 |
| 119 | #define PPTP_START_UNKNOWN_PROTOCOL 5 |
| 120 | |
| 121 | struct PptpStartSessionReply { |
| 122 | __be16 protocolVersion; |
| 123 | __u8 resultCode; |
| 124 | __u8 generalErrorCode; |
| 125 | __be32 framingCapability; |
| 126 | __be32 bearerCapability; |
| 127 | __be16 maxChannels; |
| 128 | __be16 firmwareRevision; |
| 129 | __u8 hostName[64]; |
| 130 | __u8 vendorString[64]; |
| 131 | }; |
| 132 | |
| 133 | /* PptpStopReasons */ |
| 134 | #define PPTP_STOP_NONE 1 |
| 135 | #define PPTP_STOP_PROTOCOL 2 |
| 136 | #define PPTP_STOP_LOCAL_SHUTDOWN 3 |
| 137 | |
| 138 | struct PptpStopSessionRequest { |
| 139 | __u8 reason; |
| 140 | __u8 reserved1; |
| 141 | __u16 reserved2; |
| 142 | }; |
| 143 | |
| 144 | /* PptpStopSessionResultCode */ |
| 145 | #define PPTP_STOP_OK 1 |
| 146 | #define PPTP_STOP_GENERAL_ERROR 2 |
| 147 | |
| 148 | struct PptpStopSessionReply { |
| 149 | __u8 resultCode; |
| 150 | __u8 generalErrorCode; |
| 151 | __u16 reserved1; |
| 152 | }; |
| 153 | |
| 154 | struct PptpEchoRequest { |
| 155 | __be32 identNumber; |
| 156 | }; |
| 157 | |
| 158 | /* PptpEchoReplyResultCode */ |
| 159 | #define PPTP_ECHO_OK 1 |
| 160 | #define PPTP_ECHO_GENERAL_ERROR 2 |
| 161 | |
| 162 | struct PptpEchoReply { |
| 163 | __be32 identNumber; |
| 164 | __u8 resultCode; |
| 165 | __u8 generalErrorCode; |
| 166 | __u16 reserved; |
| 167 | }; |
| 168 | |
| 169 | /* PptpFramingType */ |
| 170 | #define PPTP_ASYNC_FRAMING 1 |
| 171 | #define PPTP_SYNC_FRAMING 2 |
| 172 | #define PPTP_DONT_CARE_FRAMING 3 |
| 173 | |
| 174 | /* PptpCallBearerType */ |
| 175 | #define PPTP_ANALOG_TYPE 1 |
| 176 | #define PPTP_DIGITAL_TYPE 2 |
| 177 | #define PPTP_DONT_CARE_BEARER_TYPE 3 |
| 178 | |
| 179 | struct PptpOutCallRequest { |
| 180 | __be16 callID; |
| 181 | __be16 callSerialNumber; |
| 182 | __be32 minBPS; |
| 183 | __be32 maxBPS; |
| 184 | __be32 bearerType; |
| 185 | __be32 framingType; |
| 186 | __be16 packetWindow; |
| 187 | __be16 packetProcDelay; |
| 188 | __be16 phoneNumberLength; |
| 189 | __u16 reserved1; |
| 190 | __u8 phoneNumber[64]; |
| 191 | __u8 subAddress[64]; |
| 192 | }; |
| 193 | |
| 194 | /* PptpCallResultCode */ |
| 195 | #define PPTP_OUTCALL_CONNECT 1 |
| 196 | #define PPTP_OUTCALL_GENERAL_ERROR 2 |
| 197 | #define PPTP_OUTCALL_NO_CARRIER 3 |
| 198 | #define PPTP_OUTCALL_BUSY 4 |
| 199 | #define PPTP_OUTCALL_NO_DIAL_TONE 5 |
| 200 | #define PPTP_OUTCALL_TIMEOUT 6 |
| 201 | #define PPTP_OUTCALL_DONT_ACCEPT 7 |
| 202 | |
| 203 | struct PptpOutCallReply { |
| 204 | __be16 callID; |
| 205 | __be16 peersCallID; |
| 206 | __u8 resultCode; |
| 207 | __u8 generalErrorCode; |
| 208 | __be16 causeCode; |
| 209 | __be32 connectSpeed; |
| 210 | __be16 packetWindow; |
| 211 | __be16 packetProcDelay; |
| 212 | __be32 physChannelID; |
| 213 | }; |
| 214 | |
| 215 | struct PptpInCallRequest { |
| 216 | __be16 callID; |
| 217 | __be16 callSerialNumber; |
| 218 | __be32 callBearerType; |
| 219 | __be32 physChannelID; |
| 220 | __be16 dialedNumberLength; |
| 221 | __be16 dialingNumberLength; |
| 222 | __u8 dialedNumber[64]; |
| 223 | __u8 dialingNumber[64]; |
| 224 | __u8 subAddress[64]; |
| 225 | }; |
| 226 | |
| 227 | /* PptpInCallResultCode */ |
| 228 | #define PPTP_INCALL_ACCEPT 1 |
| 229 | #define PPTP_INCALL_GENERAL_ERROR 2 |
| 230 | #define PPTP_INCALL_DONT_ACCEPT 3 |
| 231 | |
| 232 | struct PptpInCallReply { |
| 233 | __be16 callID; |
| 234 | __be16 peersCallID; |
| 235 | __u8 resultCode; |
| 236 | __u8 generalErrorCode; |
| 237 | __be16 packetWindow; |
| 238 | __be16 packetProcDelay; |
| 239 | __u16 reserved; |
| 240 | }; |
| 241 | |
| 242 | struct PptpInCallConnected { |
| 243 | __be16 peersCallID; |
| 244 | __u16 reserved; |
| 245 | __be32 connectSpeed; |
| 246 | __be16 packetWindow; |
| 247 | __be16 packetProcDelay; |
| 248 | __be32 callFramingType; |
| 249 | }; |
| 250 | |
| 251 | struct PptpClearCallRequest { |
| 252 | __be16 callID; |
| 253 | __u16 reserved; |
| 254 | }; |
| 255 | |
| 256 | struct PptpCallDisconnectNotify { |
| 257 | __be16 callID; |
| 258 | __u8 resultCode; |
| 259 | __u8 generalErrorCode; |
| 260 | __be16 causeCode; |
| 261 | __u16 reserved; |
| 262 | __u8 callStatistics[128]; |
| 263 | }; |
| 264 | |
| 265 | struct PptpWanErrorNotify { |
| 266 | __be16 peersCallID; |
| 267 | __u16 reserved; |
| 268 | __be32 crcErrors; |
| 269 | __be32 framingErrors; |
| 270 | __be32 hardwareOverRuns; |
| 271 | __be32 bufferOverRuns; |
| 272 | __be32 timeoutErrors; |
| 273 | __be32 alignmentErrors; |
| 274 | }; |
| 275 | |
| 276 | struct PptpSetLinkInfo { |
| 277 | __be16 peersCallID; |
| 278 | __u16 reserved; |
| 279 | __be32 sendAccm; |
| 280 | __be32 recvAccm; |
| 281 | }; |
| 282 | |
| 283 | union pptp_ctrl_union { |
| 284 | struct PptpStartSessionRequest sreq; |
| 285 | struct PptpStartSessionReply srep; |
| 286 | struct PptpStopSessionRequest streq; |
| 287 | struct PptpStopSessionReply strep; |
| 288 | struct PptpOutCallRequest ocreq; |
| 289 | struct PptpOutCallReply ocack; |
| 290 | struct PptpInCallRequest icreq; |
| 291 | struct PptpInCallReply icack; |
| 292 | struct PptpInCallConnected iccon; |
| 293 | struct PptpClearCallRequest clrreq; |
| 294 | struct PptpCallDisconnectNotify disc; |
| 295 | struct PptpWanErrorNotify wanerr; |
| 296 | struct PptpSetLinkInfo setlink; |
| 297 | }; |
| 298 | |
| 299 | /* crap needed for nf_conntrack_compat.h */ |
| 300 | struct nf_conn; |
| 301 | struct nf_conntrack_expect; |
Patrick McHardy | f09943f | 2006-12-02 22:09:41 -0800 | [diff] [blame] | 302 | |
| 303 | extern int |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 304 | (*nf_nat_pptp_hook_outbound)(struct sk_buff *skb, |
Patrick McHardy | f09943f | 2006-12-02 22:09:41 -0800 | [diff] [blame] | 305 | struct nf_conn *ct, enum ip_conntrack_info ctinfo, |
Patrick McHardy | 051966c | 2012-08-26 19:14:04 +0200 | [diff] [blame] | 306 | unsigned int protoff, |
Patrick McHardy | f09943f | 2006-12-02 22:09:41 -0800 | [diff] [blame] | 307 | struct PptpControlHeader *ctlh, |
| 308 | union pptp_ctrl_union *pptpReq); |
| 309 | |
| 310 | extern int |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 311 | (*nf_nat_pptp_hook_inbound)(struct sk_buff *skb, |
Patrick McHardy | f09943f | 2006-12-02 22:09:41 -0800 | [diff] [blame] | 312 | struct nf_conn *ct, enum ip_conntrack_info ctinfo, |
Patrick McHardy | 051966c | 2012-08-26 19:14:04 +0200 | [diff] [blame] | 313 | unsigned int protoff, |
Patrick McHardy | f09943f | 2006-12-02 22:09:41 -0800 | [diff] [blame] | 314 | struct PptpControlHeader *ctlh, |
| 315 | union pptp_ctrl_union *pptpReq); |
| 316 | |
| 317 | extern void |
| 318 | (*nf_nat_pptp_hook_exp_gre)(struct nf_conntrack_expect *exp_orig, |
| 319 | struct nf_conntrack_expect *exp_reply); |
| 320 | |
| 321 | extern void |
| 322 | (*nf_nat_pptp_hook_expectfn)(struct nf_conn *ct, |
| 323 | struct nf_conntrack_expect *exp); |
| 324 | |
| 325 | #endif /* __KERNEL__ */ |
| 326 | #endif /* _NF_CONNTRACK_PPTP_H */ |