[d0950ad] | 1 | /* |
---|
| 2 | * pppd.h - PPP daemon global declarations. |
---|
| 3 | * |
---|
| 4 | * Copyright (c) 1989 Carnegie Mellon University. |
---|
| 5 | * All rights reserved. |
---|
| 6 | * |
---|
| 7 | * Redistribution and use in source and binary forms are permitted |
---|
| 8 | * provided that the above copyright notice and this paragraph are |
---|
| 9 | * duplicated in all such forms and that any documentation, |
---|
| 10 | * advertising materials, and other materials related to such |
---|
| 11 | * distribution and use acknowledge that the software was developed |
---|
| 12 | * by Carnegie Mellon University. The name of the |
---|
| 13 | * University may not be used to endorse or promote products derived |
---|
| 14 | * from this software without specific prior written permission. |
---|
| 15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
---|
| 16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
---|
| 17 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
---|
| 18 | * |
---|
| 19 | * $Id$ |
---|
| 20 | */ |
---|
| 21 | |
---|
| 22 | #ifndef __PPPD_H__ |
---|
| 23 | #define __PPPD_H__ |
---|
| 24 | |
---|
| 25 | #include <stdio.h> /* for FILE */ |
---|
[2f1b930] | 26 | #include <limits.h> /* for NGROUPS_MAX */ |
---|
[d0950ad] | 27 | #include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */ |
---|
| 28 | #include <sys/types.h> /* for u_int32_t, if defined */ |
---|
| 29 | #include <sys/time.h> /* for struct timeval */ |
---|
| 30 | #include <net/ppp_defs.h> |
---|
[0286b9f] | 31 | #include "rtemsdialer.h" |
---|
[d0950ad] | 32 | |
---|
[2f1b930] | 33 | #if defined(__STDC__) |
---|
[d0950ad] | 34 | #include <stdarg.h> |
---|
| 35 | #define __V(x) x |
---|
| 36 | #else |
---|
| 37 | #include <varargs.h> |
---|
| 38 | #define __V(x) (va_alist) va_dcl |
---|
| 39 | #define const |
---|
[2f1b930] | 40 | #define volatile |
---|
| 41 | #endif |
---|
| 42 | |
---|
| 43 | #ifdef INET6 |
---|
| 44 | #include "eui64.h" |
---|
[d0950ad] | 45 | #endif |
---|
| 46 | |
---|
| 47 | /* |
---|
| 48 | * Limits. |
---|
| 49 | */ |
---|
| 50 | |
---|
| 51 | #define NUM_PPP 1 /* One PPP interface supported (per process) */ |
---|
| 52 | #define MAXWORDLEN 1024 /* max length of word in file (incl null) */ |
---|
| 53 | #define MAXARGS 1 /* max # args to a command */ |
---|
| 54 | #define MAXNAMELEN 256 /* max length of hostname or name for auth */ |
---|
| 55 | #define MAXSECRETLEN 256 /* max length of password or secret */ |
---|
| 56 | |
---|
[2f1b930] | 57 | /* |
---|
| 58 | * Option descriptor structure. |
---|
| 59 | */ |
---|
| 60 | |
---|
| 61 | typedef unsigned char bool; |
---|
| 62 | |
---|
| 63 | enum opt_type { |
---|
| 64 | o_special_noarg = 0, |
---|
| 65 | o_special = 1, |
---|
| 66 | o_bool, |
---|
| 67 | o_int, |
---|
| 68 | o_uint32, |
---|
| 69 | o_string, |
---|
| 70 | }; |
---|
| 71 | |
---|
| 72 | typedef struct { |
---|
| 73 | char *name; /* name of the option */ |
---|
| 74 | enum opt_type type; |
---|
| 75 | void *addr; |
---|
| 76 | char *description; |
---|
| 77 | int flags; |
---|
| 78 | void *addr2; |
---|
| 79 | int upper_limit; |
---|
| 80 | int lower_limit; |
---|
| 81 | } option_t; |
---|
| 82 | |
---|
| 83 | /* Values for flags */ |
---|
| 84 | #define OPT_VALUE 0xff /* mask for presupplied value */ |
---|
| 85 | #define OPT_HEX 0x100 /* int option is in hex */ |
---|
| 86 | #define OPT_NOARG 0x200 /* option doesn't take argument */ |
---|
| 87 | #define OPT_OR 0x400 /* OR in argument to value */ |
---|
| 88 | #define OPT_INC 0x800 /* increment value */ |
---|
| 89 | #define OPT_PRIV 0x1000 /* privileged option */ |
---|
| 90 | #define OPT_STATIC 0x2000 /* string option goes into static array */ |
---|
| 91 | #define OPT_LLIMIT 0x4000 /* check value against lower limit */ |
---|
| 92 | #define OPT_ULIMIT 0x8000 /* check value against upper limit */ |
---|
| 93 | #define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT) |
---|
| 94 | #define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */ |
---|
| 95 | #define OPT_NOINCR 0x20000 /* value mustn't be increased */ |
---|
| 96 | #define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */ |
---|
| 97 | #define OPT_A2INFO 0x100000 /* addr2 -> option_info to update */ |
---|
| 98 | #define OPT_A2COPY 0x200000 /* addr2 -> second location to rcv value */ |
---|
| 99 | #define OPT_ENABLE 0x400000 /* use *addr2 as enable for option */ |
---|
| 100 | #define OPT_PRIVFIX 0x800000 /* can't be overridden if noauth */ |
---|
| 101 | #define OPT_PREPASS 0x1000000 /* do this opt in pre-pass to find device */ |
---|
| 102 | #define OPT_INITONLY 0x2000000 /* option can only be set in init phase */ |
---|
| 103 | #define OPT_DEVEQUIV 0x4000000 /* equiv to device name */ |
---|
| 104 | #define OPT_DEVNAM (OPT_PREPASS | OPT_INITONLY | OPT_DEVEQUIV) |
---|
| 105 | |
---|
| 106 | #define OPT_VAL(x) ((x) & OPT_VALUE) |
---|
| 107 | |
---|
| 108 | #ifndef GIDSET_TYPE |
---|
| 109 | #define GIDSET_TYPE gid_t |
---|
| 110 | #endif |
---|
| 111 | |
---|
| 112 | /* Structure representing a list of permitted IP addresses. */ |
---|
| 113 | struct permitted_ip { |
---|
| 114 | int permit; /* 1 = permit, 0 = forbid */ |
---|
| 115 | u_int32_t base; /* match if (addr & mask) == base */ |
---|
| 116 | u_int32_t mask; /* base and mask are in network byte order */ |
---|
| 117 | }; |
---|
| 118 | |
---|
| 119 | /* |
---|
| 120 | * Unfortunately, the linux kernel driver uses a different structure |
---|
| 121 | * for statistics from the rest of the ports. |
---|
| 122 | * This structure serves as a common representation for the bits |
---|
| 123 | * pppd needs. |
---|
| 124 | */ |
---|
| 125 | struct pppd_stats { |
---|
| 126 | unsigned int bytes_in; |
---|
| 127 | unsigned int bytes_out; |
---|
| 128 | }; |
---|
| 129 | |
---|
| 130 | /* Used for storing a sequence of words. Usually malloced. */ |
---|
| 131 | struct wordlist { |
---|
| 132 | struct wordlist *next; |
---|
| 133 | char *word; |
---|
| 134 | }; |
---|
| 135 | |
---|
[d0950ad] | 136 | /* |
---|
| 137 | * Global variables. |
---|
| 138 | */ |
---|
| 139 | |
---|
[48cdb95a] | 140 | extern int pppd_kill_link; /* Signal to terminate processing loop */ |
---|
[d0950ad] | 141 | extern int hungup; /* Physical layer has disconnected */ |
---|
[2f1b930] | 142 | extern int pppifunit; /* Interface unit number */ |
---|
[d0950ad] | 143 | extern char ifname[]; /* Interface name */ |
---|
| 144 | extern int ttyfd; /* Serial device file descriptor */ |
---|
| 145 | extern char hostname[]; /* Our hostname */ |
---|
| 146 | extern u_char outpacket_buf[]; /* Buffer for outgoing packets */ |
---|
[48cdb95a] | 147 | extern int pppd_phase; /* Current state of link - see values below */ |
---|
[d0950ad] | 148 | extern int baud_rate; /* Current link speed in bits/sec */ |
---|
| 149 | extern int redirect_stderr;/* Connector's stderr should go to file */ |
---|
| 150 | extern char peer_authname[];/* Authenticated name of peer */ |
---|
| 151 | extern int privileged; /* We were run by real-uid root */ |
---|
| 152 | extern int need_holdoff; /* Need holdoff period after link terminates */ |
---|
| 153 | extern char **script_env; /* Environment variables for scripts */ |
---|
| 154 | extern int detached; /* Have detached from controlling tty */ |
---|
[2f1b930] | 155 | extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */ |
---|
| 156 | extern int ngroups; /* How many groups valid in groups */ |
---|
| 157 | extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */ |
---|
| 158 | extern int using_pty; /* using pty as device (notty or pty opt.) */ |
---|
| 159 | extern int log_to_fd; /* logging to this fd as well as syslog */ |
---|
| 160 | extern char *no_ppp_msg; /* message to print if ppp not in kernel */ |
---|
[48cdb95a] | 161 | extern volatile int pppd_status; /* exit status for pppd */ |
---|
[2f1b930] | 162 | extern int devnam_fixed; /* can no longer change devnam */ |
---|
| 163 | extern int unsuccess; /* # unsuccessful connection attempts */ |
---|
| 164 | extern int do_callback; /* set if we want to do callback next */ |
---|
| 165 | extern int doing_callback; /* set if this is a callback */ |
---|
[0286b9f] | 166 | extern dialerfp pppd_dialer; /* script dialer function callback */ |
---|
[2f1b930] | 167 | |
---|
| 168 | /* Values for do_callback and doing_callback */ |
---|
| 169 | #define CALLBACK_DIALIN 1 /* we are expecting the call back */ |
---|
| 170 | #define CALLBACK_DIALOUT 2 /* we are dialling out to call back */ |
---|
[d0950ad] | 171 | |
---|
| 172 | /* |
---|
| 173 | * Variables set by command-line options. |
---|
| 174 | */ |
---|
| 175 | |
---|
| 176 | extern int debug; /* Debug flag */ |
---|
| 177 | extern int kdebugflag; /* Tell kernel to print debug messages */ |
---|
| 178 | extern int default_device; /* Using /dev/tty or equivalent */ |
---|
[2f1b930] | 179 | extern char devnam[MAXPATHLEN]; /* Device name */ |
---|
[d0950ad] | 180 | extern int crtscts; /* Use hardware flow control */ |
---|
[2f1b930] | 181 | extern bool modem; /* Use modem control lines */ |
---|
[d0950ad] | 182 | extern int inspeed; /* Input/Output speed requested */ |
---|
| 183 | extern u_int32_t netmask; /* IP netmask to set on interface */ |
---|
[2f1b930] | 184 | extern bool lockflag; /* Create lock file to lock the serial dev */ |
---|
| 185 | extern bool nodetach; /* Don't detach from controlling tty */ |
---|
| 186 | extern bool updetach; /* Detach from controlling tty when link up */ |
---|
| 187 | extern char *initializer; /* Script to initialize physical link */ |
---|
| 188 | extern char *connect_script; /* Script to establish physical link */ |
---|
| 189 | extern char *disconnect_script; /* Script to disestablish physical link */ |
---|
| 190 | extern char *welcomer; /* Script to welcome client after connection */ |
---|
| 191 | extern char *ptycommand; /* Command to run on other side of pty */ |
---|
[d0950ad] | 192 | extern int maxconnect; /* Maximum connect time (seconds) */ |
---|
[2f1b930] | 193 | extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */ |
---|
| 194 | extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */ |
---|
| 195 | extern bool auth_required; /* Peer is required to authenticate */ |
---|
| 196 | extern bool persist; /* Reopen link after it goes down */ |
---|
| 197 | extern bool uselogin; /* Use /etc/passwd for checking PAP */ |
---|
| 198 | extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */ |
---|
| 199 | extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */ |
---|
| 200 | extern bool explicit_remote;/* remote_name specified with remotename opt */ |
---|
| 201 | extern bool demand; /* Do dial-on-demand */ |
---|
[d0950ad] | 202 | extern char *ipparam; /* Extra parameter for ip up/down scripts */ |
---|
[2f1b930] | 203 | extern bool cryptpap; /* Others' PAP passwords are encrypted */ |
---|
[d0950ad] | 204 | extern int idle_time_limit;/* Shut down link if idle for this long */ |
---|
| 205 | extern int holdoff; /* Dead time before restarting */ |
---|
[2f1b930] | 206 | extern bool holdoff_specified; /* true if user gave a holdoff value */ |
---|
| 207 | extern bool notty; /* Stdin/out is not a tty */ |
---|
| 208 | extern char *record_file; /* File to record chars sent/received */ |
---|
| 209 | extern bool sync_serial; /* Device is synchronous serial device */ |
---|
| 210 | extern int maxfail; /* Max # of unsuccessful connection attempts */ |
---|
| 211 | extern char linkname[MAXPATHLEN]; /* logical name for link */ |
---|
| 212 | extern bool tune_kernel; /* May alter kernel settings as necessary */ |
---|
| 213 | extern int connect_delay; /* Time to delay after connect script */ |
---|
| 214 | |
---|
[d0950ad] | 215 | #ifdef PPP_FILTER |
---|
| 216 | extern struct bpf_program pass_filter; /* Filter for pkts to pass */ |
---|
| 217 | extern struct bpf_program active_filter; /* Filter for link-active pkts */ |
---|
| 218 | #endif |
---|
| 219 | |
---|
| 220 | #ifdef MSLANMAN |
---|
[2f1b930] | 221 | extern bool ms_lanman; /* Use LanMan password instead of NT */ |
---|
[d0950ad] | 222 | /* Has meaning only with MS-CHAP challenges */ |
---|
| 223 | #endif |
---|
| 224 | |
---|
[2f1b930] | 225 | extern char *current_option; /* the name of the option being parsed */ |
---|
| 226 | extern int privileged_option; /* set iff the current option came from root */ |
---|
| 227 | extern char *option_source; /* string saying where the option came from */ |
---|
| 228 | |
---|
[d0950ad] | 229 | /* |
---|
| 230 | * Values for phase. |
---|
| 231 | */ |
---|
| 232 | #define PHASE_DEAD 0 |
---|
| 233 | #define PHASE_INITIALIZE 1 |
---|
[2f1b930] | 234 | #define PHASE_SERIALCONN 2 |
---|
| 235 | #define PHASE_DORMANT 3 |
---|
| 236 | #define PHASE_ESTABLISH 4 |
---|
| 237 | #define PHASE_AUTHENTICATE 5 |
---|
| 238 | #define PHASE_CALLBACK 6 |
---|
| 239 | #define PHASE_NETWORK 7 |
---|
| 240 | #define PHASE_RUNNING 8 |
---|
| 241 | #define PHASE_TERMINATE 9 |
---|
| 242 | #define PHASE_DISCONNECT 10 |
---|
| 243 | #define PHASE_HOLDOFF 11 |
---|
[d0950ad] | 244 | |
---|
| 245 | /* |
---|
| 246 | * The following struct gives the addresses of procedures to call |
---|
| 247 | * for a particular protocol. |
---|
| 248 | */ |
---|
| 249 | struct protent { |
---|
| 250 | u_short protocol; /* PPP protocol number */ |
---|
| 251 | /* Initialization procedure */ |
---|
| 252 | void (*init) __P((int unit)); |
---|
| 253 | /* Process a received packet */ |
---|
| 254 | void (*input) __P((int unit, u_char *pkt, int len)); |
---|
| 255 | /* Process a received protocol-reject */ |
---|
| 256 | void (*protrej) __P((int unit)); |
---|
| 257 | /* Lower layer has come up */ |
---|
| 258 | void (*lowerup) __P((int unit)); |
---|
| 259 | /* Lower layer has gone down */ |
---|
| 260 | void (*lowerdown) __P((int unit)); |
---|
| 261 | /* Open the protocol */ |
---|
| 262 | void (*open) __P((int unit)); |
---|
| 263 | /* Close the protocol */ |
---|
| 264 | void (*close) __P((int unit, char *reason)); |
---|
| 265 | /* Print a packet in readable form */ |
---|
| 266 | int (*printpkt) __P((u_char *pkt, int len, |
---|
| 267 | void (*printer) __P((void *, char *, ...)), |
---|
| 268 | void *arg)); |
---|
| 269 | /* Process a received data packet */ |
---|
| 270 | void (*datainput) __P((int unit, u_char *pkt, int len)); |
---|
[2f1b930] | 271 | bool enabled_flag; /* 0 iff protocol is disabled */ |
---|
[d0950ad] | 272 | char *name; /* Text name of protocol */ |
---|
[2f1b930] | 273 | char *data_name; /* Text name of corresponding data protocol */ |
---|
| 274 | option_t *options; /* List of command-line options */ |
---|
[d0950ad] | 275 | /* Check requested options, assign defaults */ |
---|
| 276 | void (*check_options) __P((void)); |
---|
| 277 | /* Configure interface for demand-dial */ |
---|
| 278 | int (*demand_conf) __P((int unit)); |
---|
| 279 | /* Say whether to bring up link for this pkt */ |
---|
| 280 | int (*active_pkt) __P((u_char *pkt, int len)); |
---|
| 281 | }; |
---|
| 282 | |
---|
| 283 | /* Table of pointers to supported protocols */ |
---|
| 284 | extern struct protent *protocols[]; |
---|
| 285 | |
---|
| 286 | /* |
---|
| 287 | * Prototypes. |
---|
| 288 | */ |
---|
| 289 | |
---|
| 290 | /* Procedures exported from main.c. */ |
---|
| 291 | void die __P((int)); /* Cleanup and exit */ |
---|
| 292 | void quit __P((void)); /* like die(1) */ |
---|
| 293 | void novm __P((char *)); /* Say we ran out of memory, and die */ |
---|
[2f1b930] | 294 | void ppptimeout __P((void (*func)(void *), void *arg, int t)); |
---|
[d0950ad] | 295 | /* Call func(arg) after t seconds */ |
---|
| 296 | void untimeout __P((void (*func)(void *), void *arg)); |
---|
| 297 | /* Cancel call to func(arg) */ |
---|
[2f1b930] | 298 | void update_link_stats __P((int)); /* Get stats at link termination */ |
---|
| 299 | void new_phase __P((int)); /* signal start of new phase */ |
---|
| 300 | |
---|
| 301 | /* Procedures exported from utils.c. */ |
---|
[d0950ad] | 302 | void log_packet __P((u_char *, int, char *, int)); |
---|
| 303 | /* Format a packet and log it with syslog */ |
---|
| 304 | void print_string __P((char *, int, void (*) (void *, char *, ...), |
---|
| 305 | void *)); /* Format a string for output */ |
---|
[2f1b930] | 306 | int slprintf __P((char *, int, char *, ...)); /* sprintf++ */ |
---|
| 307 | int vslprintf __P((char *, int, char *, va_list)); /* vsprintf++ */ |
---|
| 308 | size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */ |
---|
| 309 | size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */ |
---|
| 310 | void pppd_dbglog __P((char *, ...)); /* log a debug message */ |
---|
| 311 | void pppd_info __P((char *, ...)); /* log an informational message */ |
---|
| 312 | void pppd_notice __P((char *, ...)); /* log a notice-level message */ |
---|
| 313 | void pppd_warn __P((char *, ...)); /* log a warning message */ |
---|
| 314 | void pppd_error __P((char *, ...)); /* log an error message */ |
---|
| 315 | void pppd_fatal __P((char *, ...)); /* log an error message and die(1) */ |
---|
| 316 | |
---|
| 317 | #define dbglog pppd_dbglog |
---|
| 318 | #define info pppd_info |
---|
| 319 | #define notice pppd_notice |
---|
| 320 | #define warn pppd_warn |
---|
| 321 | #define error pppd_error |
---|
| 322 | #define fatal pppd_fatal |
---|
[d0950ad] | 323 | |
---|
| 324 | /* Procedures exported from auth.c */ |
---|
| 325 | void link_required __P((int)); /* we are starting to use the link */ |
---|
| 326 | void link_terminated __P((int)); /* we are finished with the link */ |
---|
| 327 | void link_down __P((int)); /* the LCP layer has left the Opened state */ |
---|
| 328 | void link_established __P((int)); /* the link is up; authenticate now */ |
---|
[2f1b930] | 329 | void start_networks __P((void)); /* start all the network control protos */ |
---|
[d0950ad] | 330 | void np_up __P((int, int)); /* a network protocol has come up */ |
---|
| 331 | void np_down __P((int, int)); /* a network protocol has gone down */ |
---|
| 332 | void np_finished __P((int, int)); /* a network protocol no longer needs link */ |
---|
| 333 | void auth_peer_fail __P((int, int)); |
---|
| 334 | /* peer failed to authenticate itself */ |
---|
| 335 | void auth_peer_success __P((int, int, char *, int)); |
---|
| 336 | /* peer successfully authenticated itself */ |
---|
| 337 | void auth_withpeer_fail __P((int, int)); |
---|
| 338 | /* we failed to authenticate ourselves */ |
---|
| 339 | void auth_withpeer_success __P((int, int)); |
---|
| 340 | /* we successfully authenticated ourselves */ |
---|
[2f1b930] | 341 | int auth_check_options __P((void)); |
---|
[d0950ad] | 342 | /* check authentication options supplied */ |
---|
| 343 | void auth_reset __P((int)); /* check what secrets we have */ |
---|
[2f1b930] | 344 | int check_passwd __P((int, char *, int, char *, int, char **)); |
---|
[d0950ad] | 345 | /* Check peer-supplied username/password */ |
---|
| 346 | int get_secret __P((int, char *, char *, char *, int *, int)); |
---|
| 347 | /* get "secret" for chap */ |
---|
| 348 | int auth_ip_addr __P((int, u_int32_t)); |
---|
| 349 | /* check if IP address is authorized */ |
---|
| 350 | int bad_ip_adrs __P((u_int32_t)); |
---|
| 351 | /* check if IP address is unreasonable */ |
---|
| 352 | |
---|
| 353 | /* Procedures exported from demand.c */ |
---|
| 354 | void demand_conf __P((void)); /* config interface(s) for demand-dial */ |
---|
| 355 | void demand_block __P((void)); /* set all NPs to queue up packets */ |
---|
| 356 | void demand_unblock __P((void)); /* set all NPs to pass packets */ |
---|
| 357 | void demand_discard __P((void)); /* set all NPs to discard packets */ |
---|
| 358 | void demand_rexmit __P((int)); /* retransmit saved frames for an NP */ |
---|
| 359 | int loop_chars __P((unsigned char *, int)); /* process chars from loopback */ |
---|
[2f1b930] | 360 | int loop_frame __P((unsigned char *, int)); /* should we bring link up? */ |
---|
[d0950ad] | 361 | |
---|
| 362 | /* Procedures exported from sys-*.c */ |
---|
| 363 | void sys_init __P((void)); /* Do system-dependent initialization */ |
---|
| 364 | void sys_cleanup __P((void)); /* Restore system state before exiting */ |
---|
[2f1b930] | 365 | int sys_check_options __P((void)); /* Check options specified */ |
---|
[d0950ad] | 366 | void sys_close __P((void)); /* Clean up in a child before execing */ |
---|
| 367 | int ppp_available __P((void)); /* Test whether ppp kernel support exists */ |
---|
[2f1b930] | 368 | int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */ |
---|
| 369 | int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */ |
---|
| 370 | int establish_ppp __P((int)); /* Turn serial port into a ppp interface */ |
---|
[d0950ad] | 371 | void restore_loop __P((void)); /* Transfer ppp unit back to loopback */ |
---|
| 372 | void disestablish_ppp __P((int)); /* Restore port to normal operation */ |
---|
| 373 | void clean_check __P((void)); /* Check if line was 8-bit clean */ |
---|
| 374 | void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */ |
---|
| 375 | void restore_tty __P((int)); /* Restore port's original parameters */ |
---|
| 376 | void setdtr __P((int, int)); /* Raise or lower port's DTR line */ |
---|
| 377 | void output __P((int, u_char *, int)); /* Output a PPP packet */ |
---|
[0286b9f] | 378 | void wait_input __P((struct timeval *)); /* Wait for input, with timeout */ |
---|
| 379 | |
---|
| 380 | void ppp_delay __P((void)); /* delay task for a little while */ |
---|
[d0950ad] | 381 | int read_packet __P((u_char *)); /* Read PPP packet */ |
---|
| 382 | int get_loop_output __P((void)); /* Read pkts from loopback */ |
---|
| 383 | void ppp_send_config __P((int, int, u_int32_t, int, int)); |
---|
| 384 | /* Configure i/f transmit parameters */ |
---|
| 385 | void ppp_set_xaccm __P((int, ext_accm)); |
---|
| 386 | /* Set extended transmit ACCM */ |
---|
| 387 | void ppp_recv_config __P((int, int, u_int32_t, int, int)); |
---|
| 388 | /* Configure i/f receive parameters */ |
---|
| 389 | int ccp_test __P((int, u_char *, int, int)); |
---|
| 390 | /* Test support for compression scheme */ |
---|
| 391 | void ccp_flags_set __P((int, int, int)); |
---|
| 392 | /* Set kernel CCP state */ |
---|
| 393 | int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */ |
---|
| 394 | int get_idle_time __P((int, struct ppp_idle *)); |
---|
| 395 | /* Find out how long link has been idle */ |
---|
[2f1b930] | 396 | int get_ppp_stats __P((int, struct pppd_stats *)); |
---|
| 397 | /* Return link statistics */ |
---|
[d0950ad] | 398 | int sifvjcomp __P((int, int, int, int)); |
---|
| 399 | /* Configure VJ TCP header compression */ |
---|
[2f1b930] | 400 | int sifup __P((int)); /* Configure i/f up for one protocol */ |
---|
[d0950ad] | 401 | int sifnpmode __P((int u, int proto, enum NPmode mode)); |
---|
| 402 | /* Set mode for handling packets for proto */ |
---|
[2f1b930] | 403 | int sifdown __P((int)); /* Configure i/f down for one protocol */ |
---|
[d0950ad] | 404 | int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t)); |
---|
[2f1b930] | 405 | /* Configure IPv4 addresses for i/f */ |
---|
[d0950ad] | 406 | int cifaddr __P((int, u_int32_t, u_int32_t)); |
---|
| 407 | /* Reset i/f IP addresses */ |
---|
[2f1b930] | 408 | #ifdef INET6 |
---|
| 409 | int sif6addr __P((int, eui64_t, eui64_t)); |
---|
| 410 | /* Configure IPv6 addresses for i/f */ |
---|
| 411 | int cif6addr __P((int, eui64_t, eui64_t)); |
---|
| 412 | /* Remove an IPv6 address from i/f */ |
---|
| 413 | #endif |
---|
[d0950ad] | 414 | int sifdefaultroute __P((int, u_int32_t, u_int32_t)); |
---|
| 415 | /* Create default route through i/f */ |
---|
| 416 | int cifdefaultroute __P((int, u_int32_t, u_int32_t)); |
---|
| 417 | /* Delete default route through i/f */ |
---|
| 418 | int sifproxyarp __P((int, u_int32_t)); |
---|
| 419 | /* Add proxy ARP entry for peer */ |
---|
| 420 | int cifproxyarp __P((int, u_int32_t)); |
---|
| 421 | /* Delete proxy ARP entry for peer */ |
---|
| 422 | u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */ |
---|
| 423 | int lock __P((char *)); /* Create lock file for device */ |
---|
[2f1b930] | 424 | int relock __P((int)); /* Rewrite lock file with new pid */ |
---|
[d0950ad] | 425 | void unlock __P((void)); /* Delete previously-created lock file */ |
---|
| 426 | void logwtmp __P((const char *, const char *, const char *)); |
---|
| 427 | /* Write entry to wtmp file */ |
---|
| 428 | int get_host_seed __P((void)); /* Get host-dependent random number seed */ |
---|
[2f1b930] | 429 | int have_route_to __P((u_int32_t)); /* Check if route to addr exists */ |
---|
[d0950ad] | 430 | #ifdef PPP_FILTER |
---|
| 431 | int set_filters __P((struct bpf_program *pass, struct bpf_program *active)); |
---|
| 432 | /* Set filter programs in kernel */ |
---|
| 433 | #endif |
---|
[2f1b930] | 434 | #ifdef IPX_CHANGE |
---|
| 435 | int sipxfaddr __P((int, unsigned long, unsigned char *)); |
---|
| 436 | int cipxfaddr __P((int)); |
---|
| 437 | #endif |
---|
[d0950ad] | 438 | |
---|
| 439 | /* Procedures exported from options.c */ |
---|
| 440 | int parse_args __P((int argc, char **argv)); |
---|
| 441 | /* Parse options from arguments given */ |
---|
| 442 | int options_from_file __P((char *filename, int must_exist, int check_prot, |
---|
| 443 | int privileged)); |
---|
| 444 | /* Parse options from an options file */ |
---|
| 445 | int options_from_user __P((void)); /* Parse options from user's .ppprc */ |
---|
| 446 | int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */ |
---|
[2f1b930] | 447 | int options_from_list __P((struct wordlist *, int privileged)); |
---|
| 448 | /* Parse options from a wordlist */ |
---|
[d0950ad] | 449 | int getword __P((FILE *f, char *word, int *newlinep, char *filename)); |
---|
| 450 | /* Read a word from a file */ |
---|
| 451 | void option_error __P((char *fmt, ...)); |
---|
| 452 | /* Print an error message about an option */ |
---|
[2f1b930] | 453 | int int_option __P((char *, int *)); |
---|
| 454 | /* Simplified number_option for decimal ints */ |
---|
| 455 | void add_options __P((option_t *)); /* Add extra options */ |
---|
[d0950ad] | 456 | |
---|
| 457 | /* |
---|
| 458 | * This structure is used to store information about certain |
---|
| 459 | * options, such as where the option value came from (/etc/ppp/options, |
---|
| 460 | * command line, etc.) and whether it came from a privileged source. |
---|
| 461 | */ |
---|
| 462 | |
---|
| 463 | struct option_info { |
---|
| 464 | int priv; /* was value set by sysadmin? */ |
---|
| 465 | char *source; /* where option came from */ |
---|
| 466 | }; |
---|
| 467 | |
---|
| 468 | extern struct option_info devnam_info; |
---|
[2f1b930] | 469 | extern struct option_info initializer_info; |
---|
| 470 | extern struct option_info connect_script_info; |
---|
| 471 | extern struct option_info disconnect_script_info; |
---|
| 472 | extern struct option_info welcomer_info; |
---|
| 473 | extern struct option_info ptycommand_info; |
---|
| 474 | |
---|
| 475 | /* |
---|
| 476 | * Hooks to enable plugins to change various things. |
---|
| 477 | */ |
---|
| 478 | extern int (*new_phase_hook) __P((int)); |
---|
| 479 | extern int (*idle_time_hook) __P((struct ppp_idle *)); |
---|
| 480 | extern int (*holdoff_hook) __P((void)); |
---|
| 481 | extern int (*pap_check_hook) __P((void)); |
---|
[cb1e8a46] | 482 | extern int (*pap_auth_hook) __P((char *user, char *passwd/*, char **msgp, |
---|
[2f1b930] | 483 | struct wordlist **paddrs, |
---|
[cb1e8a46] | 484 | struct wordlist **popts*/)); |
---|
[2f1b930] | 485 | extern void (*pap_logout_hook) __P((void)); |
---|
| 486 | extern int (*pap_passwd_hook) __P((char *user, char *passwd)); |
---|
| 487 | extern void (*ip_up_hook) __P((void)); |
---|
| 488 | extern void (*ip_down_hook) __P((void)); |
---|
| 489 | extern void (*auth_linkup_hook) __P((void)); |
---|
| 490 | extern void (*auth_linkdown_hook) __P((void)); |
---|
[d0950ad] | 491 | |
---|
| 492 | /* |
---|
| 493 | * Inline versions of get/put char/short/long. |
---|
| 494 | * Pointer is advanced; we assume that both arguments |
---|
| 495 | * are lvalues and will already be in registers. |
---|
| 496 | * cp MUST be u_char *. |
---|
| 497 | */ |
---|
| 498 | #define GETCHAR(c, cp) { \ |
---|
| 499 | (c) = *(cp)++; \ |
---|
| 500 | } |
---|
| 501 | #define PUTCHAR(c, cp) { \ |
---|
| 502 | *(cp)++ = (u_char) (c); \ |
---|
| 503 | } |
---|
| 504 | |
---|
| 505 | |
---|
| 506 | #define GETSHORT(s, cp) { \ |
---|
| 507 | (s) = *(cp)++ << 8; \ |
---|
| 508 | (s) |= *(cp)++; \ |
---|
| 509 | } |
---|
| 510 | #define PUTSHORT(s, cp) { \ |
---|
| 511 | *(cp)++ = (u_char) ((s) >> 8); \ |
---|
| 512 | *(cp)++ = (u_char) (s); \ |
---|
| 513 | } |
---|
| 514 | |
---|
| 515 | #define GETLONG(l, cp) { \ |
---|
| 516 | (l) = *(cp)++ << 8; \ |
---|
| 517 | (l) |= *(cp)++; (l) <<= 8; \ |
---|
| 518 | (l) |= *(cp)++; (l) <<= 8; \ |
---|
| 519 | (l) |= *(cp)++; \ |
---|
| 520 | } |
---|
| 521 | #define PUTLONG(l, cp) { \ |
---|
| 522 | *(cp)++ = (u_char) ((l) >> 24); \ |
---|
| 523 | *(cp)++ = (u_char) ((l) >> 16); \ |
---|
| 524 | *(cp)++ = (u_char) ((l) >> 8); \ |
---|
| 525 | *(cp)++ = (u_char) (l); \ |
---|
| 526 | } |
---|
| 527 | |
---|
| 528 | #define INCPTR(n, cp) ((cp) += (n)) |
---|
| 529 | #define DECPTR(n, cp) ((cp) -= (n)) |
---|
| 530 | |
---|
| 531 | /* |
---|
| 532 | * System dependent definitions for user-level 4.3BSD UNIX implementation. |
---|
| 533 | */ |
---|
| 534 | |
---|
[2f1b930] | 535 | #define TIMEOUT(r, f, t) ppptimeout((r), (f), (t)) |
---|
[d0950ad] | 536 | #define UNTIMEOUT(r, f) untimeout((r), (f)) |
---|
| 537 | |
---|
| 538 | #define BCOPY(s, d, l) memcpy(d, s, l) |
---|
| 539 | #define BZERO(s, n) memset(s, 0, n) |
---|
| 540 | |
---|
[2f1b930] | 541 | #define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); } |
---|
[d0950ad] | 542 | |
---|
| 543 | /* |
---|
| 544 | * MAKEHEADER - Add Header fields to a packet. |
---|
| 545 | */ |
---|
| 546 | #define MAKEHEADER(p, t) { \ |
---|
| 547 | PUTCHAR(PPP_ALLSTATIONS, p); \ |
---|
| 548 | PUTCHAR(PPP_UI, p); \ |
---|
| 549 | PUTSHORT(t, p); } |
---|
| 550 | |
---|
[2f1b930] | 551 | /* |
---|
| 552 | * Exit status values. |
---|
| 553 | */ |
---|
| 554 | #define EXIT_OK 0 |
---|
| 555 | #define EXIT_FATAL_ERROR 1 |
---|
| 556 | #define EXIT_OPTION_ERROR 2 |
---|
| 557 | #define EXIT_NOT_ROOT 3 |
---|
| 558 | #define EXIT_NO_KERNEL_SUPPORT 4 |
---|
| 559 | #define EXIT_USER_REQUEST 5 |
---|
| 560 | #define EXIT_LOCK_FAILED 6 |
---|
| 561 | #define EXIT_OPEN_FAILED 7 |
---|
| 562 | #define EXIT_CONNECT_FAILED 8 |
---|
| 563 | #define EXIT_PTYCMD_FAILED 9 |
---|
| 564 | #define EXIT_NEGOTIATION_FAILED 10 |
---|
| 565 | #define EXIT_PEER_AUTH_FAILED 11 |
---|
| 566 | #define EXIT_IDLE_TIMEOUT 12 |
---|
| 567 | #define EXIT_CONNECT_TIME 13 |
---|
| 568 | #define EXIT_CALLBACK 14 |
---|
| 569 | #define EXIT_PEER_DEAD 15 |
---|
| 570 | #define EXIT_HANGUP 16 |
---|
| 571 | #define EXIT_LOOPBACK 17 |
---|
| 572 | #define EXIT_INIT_FAILED 18 |
---|
| 573 | #define EXIT_AUTH_TOPEER_FAILED 19 |
---|
| 574 | |
---|
| 575 | /* |
---|
| 576 | * Debug macros. Slightly useful for finding bugs in pppd, not particularly |
---|
| 577 | * useful for finding out why your connection isn't being established. |
---|
| 578 | */ |
---|
[d0950ad] | 579 | |
---|
| 580 | #ifdef DEBUGALL |
---|
| 581 | #define DEBUGMAIN 1 |
---|
| 582 | #define DEBUGFSM 1 |
---|
| 583 | #define DEBUGLCP 1 |
---|
| 584 | #define DEBUGIPCP 1 |
---|
[2f1b930] | 585 | #define DEBUGIPV6CP 1 |
---|
[d0950ad] | 586 | #define DEBUGUPAP 1 |
---|
| 587 | #define DEBUGCHAP 1 |
---|
| 588 | #endif |
---|
[2f1b930] | 589 | #define DEBUGMAIN 1 |
---|
[aee474b] | 590 | #define DEBUGUPAP 1 |
---|
| 591 | #define DEBUGCHAP 1 |
---|
[2f1b930] | 592 | |
---|
[d0950ad] | 593 | |
---|
| 594 | #ifdef DEBUGMAIN |
---|
[2f1b930] | 595 | #define MAINDEBUG(x) if (debug) dbglog x |
---|
[d0950ad] | 596 | #else |
---|
| 597 | #define MAINDEBUG(x) |
---|
| 598 | #endif |
---|
| 599 | |
---|
| 600 | #ifdef DEBUGSYS |
---|
[2f1b930] | 601 | #define SYSDEBUG(x) if (debug) dbglog x |
---|
[d0950ad] | 602 | #else |
---|
| 603 | #define SYSDEBUG(x) |
---|
| 604 | #endif |
---|
| 605 | |
---|
| 606 | #ifdef DEBUGFSM |
---|
[2f1b930] | 607 | #define FSMDEBUG(x) if (debug) dbglog x |
---|
[d0950ad] | 608 | #else |
---|
| 609 | #define FSMDEBUG(x) |
---|
| 610 | #endif |
---|
| 611 | |
---|
| 612 | #ifdef DEBUGLCP |
---|
[2f1b930] | 613 | #define LCPDEBUG(x) if (debug) dbglog x |
---|
[d0950ad] | 614 | #else |
---|
| 615 | #define LCPDEBUG(x) |
---|
| 616 | #endif |
---|
| 617 | |
---|
| 618 | #ifdef DEBUGIPCP |
---|
[2f1b930] | 619 | #define IPCPDEBUG(x) if (debug) dbglog x |
---|
[d0950ad] | 620 | #else |
---|
| 621 | #define IPCPDEBUG(x) |
---|
| 622 | #endif |
---|
| 623 | |
---|
[2f1b930] | 624 | #ifdef DEBUGIPV6CP |
---|
| 625 | #define IPV6CPDEBUG(x) if (debug) dbglog x |
---|
| 626 | #else |
---|
| 627 | #define IPV6CPDEBUG(x) |
---|
| 628 | #endif |
---|
| 629 | |
---|
[d0950ad] | 630 | #ifdef DEBUGUPAP |
---|
[2f1b930] | 631 | #define UPAPDEBUG(x) if (debug) dbglog x |
---|
[d0950ad] | 632 | #else |
---|
| 633 | #define UPAPDEBUG(x) |
---|
| 634 | #endif |
---|
| 635 | |
---|
| 636 | #ifdef DEBUGCHAP |
---|
[2f1b930] | 637 | #define CHAPDEBUG(x) if (debug) dbglog x |
---|
[d0950ad] | 638 | #else |
---|
| 639 | #define CHAPDEBUG(x) |
---|
| 640 | #endif |
---|
| 641 | |
---|
| 642 | #ifdef DEBUGIPXCP |
---|
[2f1b930] | 643 | #define IPXCPDEBUG(x) if (debug) dbglog x |
---|
[d0950ad] | 644 | #else |
---|
| 645 | #define IPXCPDEBUG(x) |
---|
| 646 | #endif |
---|
| 647 | |
---|
| 648 | #ifndef SIGTYPE |
---|
| 649 | #if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) |
---|
| 650 | #define SIGTYPE void |
---|
| 651 | #else |
---|
| 652 | #define SIGTYPE int |
---|
| 653 | #endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */ |
---|
| 654 | #endif /* SIGTYPE */ |
---|
| 655 | |
---|
| 656 | #ifndef MIN |
---|
| 657 | #define MIN(a, b) ((a) < (b)? (a): (b)) |
---|
| 658 | #endif |
---|
| 659 | #ifndef MAX |
---|
| 660 | #define MAX(a, b) ((a) > (b)? (a): (b)) |
---|
| 661 | #endif |
---|
| 662 | |
---|
| 663 | #endif /* __PPP_H__ */ |
---|