1/* 2 * pptpdefs.h 3 * 4 * PPTP structs and defines 5 * 6 * $Id: pptpdefs.h,v 1.4 2006/12/08 00:01:40 quozl Exp $ 7 */ 8 9#ifndef _PPTPD_PPTPDEFS_H 10#define _PPTPD_PPTPDEFS_H 11 12/* define "portable" htons, etc, copied to make Ananian's gre stuff work. */ 13#define hton8(x) (x) 14#define ntoh8(x) (x) 15#define hton16(x) htons(x) 16#define ntoh16(x) ntohs(x) 17#define hton32(x) htonl(x) 18#define ntoh32(x) ntohl(x) 19 20#include <sys/types.h> 21 22/* PPTP ctrl message port */ 23#define PPTP_PORT 1723 24 25/* PPTP gre prototype */ 26#define PPTP_PROTO 47 27 28/* PPTP version */ 29#define PPTP_VERSION 0x0100 30#define PPTP_FIRMWARE_VERSION 0x0001 31 32/* Hostname and Vendor */ 33#define PPTP_HOSTNAME "local" 34#define PPTP_VENDOR "linux" 35 36#define MAX_HOSTNAME_SIZE 64 37#define MAX_VENDOR_SIZE 64 38 39/* Magic Cookie */ 40#define PPTP_MAGIC_COOKIE 0x1a2b3c4d 41 42/* Message types */ 43#define PPTP_CTRL_MESSAGE 1 44 45/* Maximum size of any PPTP control packet we will get */ 46#define PPTP_MAX_CTRL_PCKT_SIZE 220 47 48/* Control Connection Management */ 49#define START_CTRL_CONN_RQST 1 50#define START_CTRL_CONN_RPLY 2 51#define STOP_CTRL_CONN_RQST 3 52#define STOP_CTRL_CONN_RPLY 4 53#define ECHO_RQST 5 54#define ECHO_RPLY 6 55 56/* Call Management */ 57#define OUT_CALL_RQST 7 58#define OUT_CALL_RPLY 8 59#define IN_CALL_RQST 9 60#define IN_CALL_RPLY 10 61#define IN_CALL_CONN 11 62#define CALL_CLR_RQST 12 63#define CALL_DISCONN_NTFY 13 64 65/* Error Reporting */ 66#define WAN_ERR_NTFY 14 67 68/* PPP Session Control */ 69#define SET_LINK_INFO 15 70 71/* how long before a link is idle? (seconds) */ 72#define IDLE_WAIT 60 73 74/* how long should we wait for an echo reply? (seconds) */ 75#define MAX_ECHO_WAIT 60 76 77#define RESERVED 0x0000 78 79/* Start Control Connection Reply */ 80#define ASYNCHRONOUS_FRAMING 0x00000001 81#define SYNCHRONOUS_FRAMING 0x00000002 82#define ANALOG_ACCESS 0x00000001 83#define DIGITAL_ACCESS 0x00000002 84 85/* Our properties - we don't actually have any physical serial i/f's and only want 86 * one call per client! 87 */ 88#define OUR_FRAMING 0x00000000 89#define OUR_BEARER 0x00000000 90#define MAX_CHANNELS 0x0001 91 92/* Out Call Reply Defines */ 93#define PCKT_RECV_WINDOW_SIZE 0x0001 94#define PCKT_PROCESS_DELAY 0x0000 95#define CHANNEL_ID 0x00000000 96 97/* ERROR CODES */ 98#define NO_ERROR 0x00 99 100/* CALL_CLEAR RESULT CODES */ 101#define LOST_CARRIER 0x01 102#define ADMIN_SHUTDOWN 0x03 103#define CALL_CLEAR_REQUEST 0x04 104 105/* RESULT CODES */ 106#define CONNECTED 0x01 107#define DISCONNECTED 0x01 108#define GENERAL_ERROR 0x02 /* also for ERROR CODES, CALL CLEAR */ 109#define NO_CARRIER 0x03 110#define BUSY 0x04 111#define NO_DIAL_TONE 0x05 112#define TIME_OUT 0x06 113#define DO_NOT_ACCEPT 0x07 114 115/* CTRL CLOSE CODES */ 116#define GENERAL_STOP_CTRL 0x01 117#define STOP_PROTOCOL 0x02 118#define STOP_LOCAL_SHUTDOWN 0x03 119 120/* PPTP CTRL structs */ 121 122struct pptp_header { 123 u_int16_t length; /* pptp message length incl header */ 124 u_int16_t pptp_type; /* pptp message type */ 125 u_int32_t magic; /* magic cookie */ 126 u_int16_t ctrl_type; /* control message type */ 127 u_int16_t reserved0; /* reserved */ 128}; 129 130struct pptp_start_ctrl_conn_rqst { 131 struct pptp_header header; /* pptp header */ 132 u_int16_t version; /* pptp protocol version */ 133 u_int16_t reserved1; /* reserved */ 134 u_int32_t framing_cap; /* framing capabilities */ 135 u_int32_t bearer_cap; /* bearer capabilities */ 136 u_int16_t max_channels; /* maximum channels */ 137 u_int16_t firmware_rev; /* firmware revision */ 138 u_int8_t hostname[MAX_HOSTNAME_SIZE]; /* hostname */ 139 u_int8_t vendor[MAX_VENDOR_SIZE]; /* vendor */ 140}; 141 142struct pptp_start_ctrl_conn_rply { 143 struct pptp_header header; /* pptp header */ 144 u_int16_t version; /* pptp protocol version */ 145 u_int8_t result_code; /* result code */ 146 u_int8_t error_code; /* error code */ 147 u_int32_t framing_cap; /* framing capabilities */ 148 u_int32_t bearer_cap; /* bearer capabilities */ 149 u_int16_t max_channels; /* maximum channels */ 150 u_int16_t firmware_rev; /* firmware revision */ 151 u_int8_t hostname[MAX_HOSTNAME_SIZE]; /* hostname */ 152 u_int8_t vendor[MAX_VENDOR_SIZE]; /* vendor */ 153}; 154 155struct pptp_stop_ctrl_conn_rqst { 156 struct pptp_header header; /* header */ 157 u_int8_t reason; /* reason for closing */ 158 u_int8_t reserved1; /* reserved */ 159 u_int16_t reserved2; /* reserved */ 160}; 161 162struct pptp_stop_ctrl_conn_rply { 163 struct pptp_header header; /* header */ 164 u_int8_t result_code; /* result code */ 165 u_int8_t error_code; /* error code */ 166 u_int16_t reserved1; /* reserved */ 167}; 168 169struct pptp_echo_rqst { 170 struct pptp_header header; /* header */ 171 u_int32_t identifier; /* value to match rply with rqst */ 172}; 173 174struct pptp_echo_rply { 175 struct pptp_header header; /* header */ 176 u_int32_t identifier; /* identifier of echo rqst */ 177 u_int8_t result_code; /* result code */ 178 u_int8_t error_code; /* error code */ 179 u_int16_t reserved1; /* reserved */ 180}; 181 182struct pptp_out_call_rqst { 183 struct pptp_header header; /* header */ 184 u_int16_t call_id; /* unique identifier to PAC-PNS pair */ 185 u_int16_t call_serial; /* session identifier */ 186 u_int32_t min_bps; /* minimum line speed */ 187 u_int32_t max_bps; /* maximum line speed */ 188 u_int32_t bearer_type; /* bearer type */ 189 u_int32_t framing_type; /* framing type */ 190 u_int16_t pckt_recv_size; /* packet recv window size */ 191 u_int16_t pckt_delay; /* packet processing delay */ 192 u_int16_t phone_len; /* phone number length */ 193 u_int16_t reserved1; /* reserved */ 194 u_int8_t phone_num[64]; /* phone number */ 195 u_int8_t subaddress[64]; /* additional dialing info */ 196}; 197 198struct pptp_out_call_rply { 199 struct pptp_header header; /* header */ 200 u_int16_t call_id; /* unique identifier to PAC-PNS pair */ 201 u_int16_t call_id_peer; /* set to call_id of the call rqst */ 202 u_int8_t result_code; /* result code */ 203 u_int8_t error_code; /* error code */ 204 u_int16_t cause_code; /* additional failure information */ 205 u_int32_t speed; /* actual connection speed */ 206 u_int16_t pckt_recv_size; /* packet recv window size */ 207 u_int16_t pckt_delay; /* packet processing delay */ 208 u_int32_t channel_id; /* physical channel ID */ 209}; 210 211struct pptp_in_call_rqst { 212 struct pptp_header header; /* header */ 213 u_int16_t call_id; /* unique identifier for tunnel */ 214 u_int16_t call_serial; /* session identifier */ 215 u_int32_t bearer_type; /* bearer capability */ 216 u_int32_t channel_id; /* channel ID */ 217 u_int16_t dialed_len; /* dialed length */ 218 u_int16_t dialing_len; /* dialing length */ 219 u_int8_t dialed_num[64]; /* number that was dialed by the caller */ 220 u_int8_t dialing_num[64]; /* the number from which the call was placed */ 221 u_int8_t subaddress[64]; /* additional dialing information */ 222}; 223 224struct pptp_in_call_rply { 225 struct pptp_header header; /* header */ 226 u_int16_t call_id; /* unique identifier for the tunnel */ 227 u_int16_t peers_call_id; /* set to rcvd call ID */ 228 u_int8_t result_code; /* result code */ 229 u_int8_t error_code; /* error code */ 230 u_int16_t pckt_recv_size; /* packet recv window size */ 231 u_int16_t pckt_delay; /* packet transmit delay */ 232 u_int16_t reserved1; /* reserved */ 233}; 234 235struct pptp_in_call_connect { 236 struct pptp_header header; /* header */ 237 u_int16_t peers_call_id; /* set to rcvd call ID */ 238 u_int16_t reserved1; /* reserved */ 239 u_int32_t speed; /* connect speed */ 240 u_int16_t pckt_recv_size; /* packet rcvd window size */ 241 u_int16_t pckt_delay; /* packet transmit delay */ 242 u_int32_t framing_type; /* framing type */ 243}; 244 245struct pptp_call_clr_rqst { 246 struct pptp_header header; /* header */ 247 u_int16_t call_id; /* call ID assigned by the PNS */ 248 u_int16_t reserved1; /* reserved */ 249}; 250 251struct pptp_call_disconn_ntfy { 252 struct pptp_header header; /* header */ 253 u_int16_t call_id; /* call ID assigned by the PAC */ 254 u_int8_t result_code; /* result code */ 255 u_int8_t error_code; /* error code */ 256 u_int16_t cause_code; /* additional disconnect info */ 257 u_int16_t reserved1; /* reserved */ 258 u_int8_t call_stats[128]; /* vendor specific call stats */ 259}; 260 261struct pptp_wan_err_ntfy { 262 struct pptp_header header; /* header */ 263 u_int16_t peers_call_id; /* call ID assigned by PNS */ 264 u_int16_t reserved1; /* reserved */ 265 u_int32_t crc_errors; /* # of PPP frames rcvd with CRC errors */ 266 u_int32_t framing_errors; /* # of improperly framed PPP pckts */ 267 u_int32_t hardware_overruns; /* # of receive buffer overruns */ 268 u_int32_t buff_overruns; /* # of buffer overruns */ 269 u_int32_t timeout_errors; /* # of timeouts */ 270 u_int32_t align_errors; /* # of alignment errors */ 271}; 272 273struct pptp_set_link_info { 274 struct pptp_header header; 275 u_int16_t peers_call_id; /* call ID assigned by PAC */ 276 u_int16_t reserved1; /* reserved */ 277 u_int32_t send_accm; /* send ACCM value the client should use */ 278 u_int32_t recv_accm; /* recv ACCM value the client should use */ 279}; 280 281/* GRE and PPP structs */ 282 283/* Copied from C. S. Ananian */ 284 285#define HDLC_FLAG 0x7E 286#define HDLC_ESCAPE 0x7D 287 288#define PPTP_GRE_PROTO 0x880B 289#define PPTP_GRE_VER 0x1 290 291#define PPTP_GRE_FLAG_C 0x80 292#define PPTP_GRE_FLAG_R 0x40 293#define PPTP_GRE_FLAG_K 0x20 294#define PPTP_GRE_FLAG_S 0x10 295#define PPTP_GRE_FLAG_A 0x80 296 297#define PPTP_GRE_IS_C(f) ((f)&PPTP_GRE_FLAG_C) 298#define PPTP_GRE_IS_R(f) ((f)&PPTP_GRE_FLAG_R) 299#define PPTP_GRE_IS_K(f) ((f)&PPTP_GRE_FLAG_K) 300#define PPTP_GRE_IS_S(f) ((f)&PPTP_GRE_FLAG_S) 301#define PPTP_GRE_IS_A(f) ((f)&PPTP_GRE_FLAG_A) 302 303struct pptp_gre_header { 304 u_int8_t flags; /* bitfield */ 305 u_int8_t ver; /* should be PPTP_GRE_VER (enhanced GRE) */ 306 u_int16_t protocol; /* should be PPTP_GRE_PROTO (ppp-encaps) */ 307 u_int16_t payload_len; /* size of ppp payload, not inc. gre header */ 308 u_int16_t call_id; /* peer's call_id for this session */ 309 u_int32_t seq; /* sequence number. Present if S==1 */ 310 u_int32_t ack; /* seq number of highest packet recieved by */ 311 /* sender in this session */ 312}; 313 314/* For our call ID pairs */ 315#define PNS_VALUE 0 316#define PAC_VALUE 1 317 318#define GET_VALUE(which, where) ((which ## _VALUE) ? ((where) & 0xffff) : ((where) >> 16)) 319 320#define NOTE_VALUE(which, where, what) ((which ## _VALUE) \ 321 ? ((where) = ((where) & 0xffff0000) | (what)) \ 322 : ((where) = ((where) & 0xffff) | ((what) << 16))) 323 324#endif /* !_PPTPD_PPTPDEFS_H */ 325