2 * pppd.h - PPP daemon global declarations.
4 * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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15 * the documentation and/or other materials provided with the
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21 * details, please contact
22 * Office of Technology Transfer
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34 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
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36 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
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42 * $Id: pppd.h,v 1.96 2008/06/23 11:47:18 paulus Exp $
52 #include <stdio.h> /* for FILE */
53 #include <limits.h> /* for NGROUPS_MAX */
54 #include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */
55 #include <sys/types.h> /* for u_int32_t, if defined */
56 #include <sys/time.h> /* for struct timeval */
57 #include <net/ppp_defs.h>
58 #include "patchlevel.h"
65 #define __V(x) (va_alist) va_dcl
78 #define NUM_PPP 1 /* One PPP interface supported (per process) */
79 #define MAXWORDLEN 1024 /* max length of word in file (incl null) */
80 #define MAXARGS 1 /* max # args to a command */
81 #define MAXNAMELEN 256 /* max length of hostname or name for auth */
82 #define MAXSECRETLEN 256 /* max length of password or secret */
85 * Option descriptor structure.
88 typedef unsigned char bool;
101 char *name; /* name of the option */
114 /* Values for flags */
115 #define OPT_VALUE 0xff /* mask for presupplied value */
116 #define OPT_HEX 0x100 /* int option is in hex */
117 #define OPT_NOARG 0x200 /* option doesn't take argument */
118 #define OPT_OR 0x400 /* for u32, OR in argument to value */
119 #define OPT_INC 0x400 /* for o_int, increment value */
120 #define OPT_A2OR 0x800 /* for o_bool, OR arg to *(u_char *)addr2 */
121 #define OPT_PRIV 0x1000 /* privileged option */
122 #define OPT_STATIC 0x2000 /* string option goes into static array */
123 #define OPT_NOINCR 0x2000 /* for o_int, value mustn't be increased */
124 #define OPT_LLIMIT 0x4000 /* check value against lower limit */
125 #define OPT_ULIMIT 0x8000 /* check value against upper limit */
126 #define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT)
127 #define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */
128 #define OPT_HIDE 0x10000 /* for o_string, print value as ?????? */
129 #define OPT_A2LIST 0x20000 /* for o_special, keep list of values */
130 #define OPT_A2CLRB 0x20000 /* o_bool, clr val bits in *(u_char *)addr2 */
131 #define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */
132 #define OPT_PRIO 0x80000 /* process option priorities for this option */
133 #define OPT_PRIOSUB 0x100000 /* subsidiary member of priority group */
134 #define OPT_ALIAS 0x200000 /* option is alias for previous option */
135 #define OPT_A2COPY 0x400000 /* addr2 -> second location to rcv value */
136 #define OPT_ENABLE 0x800000 /* use *addr2 as enable for option */
137 #define OPT_A2CLR 0x1000000 /* clear *(bool *)addr2 */
138 #define OPT_PRIVFIX 0x2000000 /* user can't override if set by root */
139 #define OPT_INITONLY 0x4000000 /* option can only be set in init phase */
140 #define OPT_DEVEQUIV 0x8000000 /* equiv to device name */
141 #define OPT_DEVNAM (OPT_INITONLY | OPT_DEVEQUIV)
142 #define OPT_A2PRINTER 0x10000000 /* *addr2 printer_func to print option */
143 #define OPT_A2STRVAL 0x20000000 /* *addr2 points to current string value */
144 #define OPT_NOPRINT 0x40000000 /* don't print this option at all */
146 #define OPT_VAL(x) ((x) & OPT_VALUE)
148 /* Values for priority */
149 #define OPRIO_DEFAULT 0 /* a default value */
150 #define OPRIO_CFGFILE 1 /* value from a configuration file */
151 #define OPRIO_CMDLINE 2 /* value from the command line */
152 #define OPRIO_SECFILE 3 /* value from options in a secrets file */
153 #define OPRIO_ROOT 100 /* added to priority if OPT_PRIVFIX && root */
156 #define GIDSET_TYPE gid_t
159 /* Structure representing a list of permitted IP addresses. */
160 struct permitted_ip {
161 int permit; /* 1 = permit, 0 = forbid */
162 u_int32_t base; /* match if (addr & mask) == base */
163 u_int32_t mask; /* base and mask are in network byte order */
167 * Unfortunately, the linux kernel driver uses a different structure
168 * for statistics from the rest of the ports.
169 * This structure serves as a common representation for the bits
173 unsigned int bytes_in;
174 unsigned int bytes_out;
175 unsigned int pkts_in;
176 unsigned int pkts_out;
179 /* Used for storing a sequence of words. Usually malloced. */
181 struct wordlist *next;
185 /* An endpoint discriminator, used with multilink. */
186 #define MAX_ENDP_LEN 20 /* maximum length of discriminator value */
189 unsigned char length;
190 unsigned char value[MAX_ENDP_LEN];
193 /* values for epdisc.class */
194 #define EPD_NULL 0 /* null discriminator, no data */
199 #define EPD_PHONENUM 5
201 typedef void (*notify_func) __P((void *, int));
202 typedef void (*printer_func) __P((void *, char *, ...));
205 struct notifier *next;
214 extern int hungup; /* Physical layer has disconnected */
215 extern int ifunit; /* Interface unit number */
216 extern char ifname[]; /* Interface name */
217 extern char hostname[]; /* Our hostname */
218 extern u_char outpacket_buf[]; /* Buffer for outgoing packets */
219 extern int devfd; /* fd of underlying device */
220 extern int fd_ppp; /* fd for talking PPP */
221 extern int phase; /* Current state of link - see values below */
222 extern int baud_rate; /* Current link speed in bits/sec */
223 extern char *progname; /* Name of this program */
224 extern int redirect_stderr;/* Connector's stderr should go to file */
225 extern char peer_authname[];/* Authenticated name of peer */
226 extern int auth_done[NUM_PPP]; /* Methods actually used for auth */
227 extern int privileged; /* We were run by real-uid root */
228 extern int need_holdoff; /* Need holdoff period after link terminates */
229 extern char **script_env; /* Environment variables for scripts */
230 extern int detached; /* Have detached from controlling tty */
231 extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */
232 extern int ngroups; /* How many groups valid in groups */
233 extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */
234 extern int link_stats_valid; /* set if link_stats is valid */
235 extern unsigned link_connect_time; /* time the link was up for */
236 extern int using_pty; /* using pty as device (notty or pty opt.) */
237 extern int log_to_fd; /* logging to this fd as well as syslog */
238 extern bool log_default; /* log_to_fd is default (stdout) */
239 extern char *no_ppp_msg; /* message to print if ppp not in kernel */
240 extern volatile int status; /* exit status for pppd */
241 extern bool devnam_fixed; /* can no longer change devnam */
242 extern int unsuccess; /* # unsuccessful connection attempts */
243 extern int do_callback; /* set if we want to do callback next */
244 extern int doing_callback; /* set if this is a callback */
245 extern int error_count; /* # of times error() has been called */
246 extern char ppp_devnam[MAXPATHLEN];
247 extern char remote_number[MAXNAMELEN]; /* Remote telephone number, if avail. */
248 extern int ppp_session_number; /* Session number (eg PPPoE session) */
249 extern int fd_devnull; /* fd open to /dev/null */
251 extern int listen_time; /* time to listen first (ms) */
252 extern bool doing_multilink;
253 extern bool multilink_master;
254 extern bool bundle_eof;
255 extern bool bundle_terminating;
257 extern struct notifier *pidchange; /* for notifications of pid changing */
258 extern struct notifier *phasechange; /* for notifications of phase changes */
259 extern struct notifier *exitnotify; /* for notification that we're exiting */
260 extern struct notifier *sigreceived; /* notification of received signal */
261 extern struct notifier *ip_up_notifier; /* IPCP has come up */
262 extern struct notifier *ip_down_notifier; /* IPCP has gone down */
263 extern struct notifier *ipv6_up_notifier; /* IPV6CP has come up */
264 extern struct notifier *ipv6_down_notifier; /* IPV6CP has gone down */
265 extern struct notifier *auth_up_notifier; /* peer has authenticated */
266 extern struct notifier *link_down_notifier; /* link has gone down */
267 extern struct notifier *fork_notifier; /* we are a new child process */
269 /* Values for do_callback and doing_callback */
270 #define CALLBACK_DIALIN 1 /* we are expecting the call back */
271 #define CALLBACK_DIALOUT 2 /* we are dialling out to call back */
274 * Variables set by command-line options.
277 extern int debug; /* Debug flag */
278 extern int kdebugflag; /* Tell kernel to print debug messages */
279 extern int default_device; /* Using /dev/tty or equivalent */
280 extern char devnam[MAXPATHLEN]; /* Device name */
281 extern int crtscts; /* Use hardware flow control */
282 extern bool modem; /* Use modem control lines */
283 extern int inspeed; /* Input/Output speed requested */
284 extern u_int32_t netmask; /* IP netmask to set on interface */
285 extern bool lockflag; /* Create lock file to lock the serial dev */
286 extern bool nodetach; /* Don't detach from controlling tty */
287 extern bool updetach; /* Detach from controlling tty when link up */
288 extern char *initializer; /* Script to initialize physical link */
289 extern char *connect_script; /* Script to establish physical link */
290 extern char *disconnect_script; /* Script to disestablish physical link */
291 extern char *welcomer; /* Script to welcome client after connection */
292 extern char *ptycommand; /* Command to run on other side of pty */
293 extern int maxconnect; /* Maximum connect time (seconds) */
294 extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */
295 extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */
296 extern bool auth_required; /* Peer is required to authenticate */
297 extern bool persist; /* Reopen link after it goes down */
298 extern bool uselogin; /* Use /etc/passwd for checking PAP */
299 extern bool session_mgmt; /* Do session management (login records) */
300 extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */
301 extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
302 extern bool explicit_remote;/* remote_name specified with remotename opt */
303 extern bool demand; /* Do dial-on-demand */
304 extern char *ipparam; /* Extra parameter for ip up/down scripts */
305 extern bool cryptpap; /* Others' PAP passwords are encrypted */
306 extern int idle_time_limit;/* Shut down link if idle for this long */
307 extern int holdoff; /* Dead time before restarting */
308 extern bool holdoff_specified; /* true if user gave a holdoff value */
309 extern bool notty; /* Stdin/out is not a tty */
310 extern char *pty_socket; /* Socket to connect to pty */
311 extern char *record_file; /* File to record chars sent/received */
312 extern bool sync_serial; /* Device is synchronous serial device */
313 extern int maxfail; /* Max # of unsuccessful connection attempts */
314 extern char linkname[MAXPATHLEN]; /* logical name for link */
315 extern bool tune_kernel; /* May alter kernel settings as necessary */
316 extern int connect_delay; /* Time to delay after connect script */
317 extern int max_data_rate; /* max bytes/sec through charshunt */
318 extern int req_unit; /* interface unit number to use */
319 extern bool multilink; /* enable multilink operation */
320 extern bool noendpoint; /* don't send or accept endpt. discrim. */
321 extern char *bundle_name; /* bundle name for multilink */
322 extern bool dump_options; /* print out option values */
323 extern bool dryrun; /* check everything, print options, exit */
324 extern int child_wait; /* # seconds to wait for children at end */
327 extern unsigned int maxoctets; /* Maximum octetes per session (in bytes) */
328 extern int maxoctets_dir; /* Direction :
333 extern int maxoctets_timeout; /* Timeout for check of octets limit */
334 #define PPP_OCTETS_DIRECTION_SUM 0
335 #define PPP_OCTETS_DIRECTION_IN 1
336 #define PPP_OCTETS_DIRECTION_OUT 2
337 #define PPP_OCTETS_DIRECTION_MAXOVERAL 3
338 /* same as previos, but little different on RADIUS side */
339 #define PPP_OCTETS_DIRECTION_MAXSESSION 4
343 extern struct bpf_program pass_filter; /* Filter for pkts to pass */
344 extern struct bpf_program active_filter; /* Filter for link-active pkts */
348 extern bool ms_lanman; /* Use LanMan password instead of NT */
349 /* Has meaning only with MS-CHAP challenges */
352 /* Values for auth_pending, auth_done */
353 #define PAP_WITHPEER 0x1
355 #define CHAP_WITHPEER 0x4
356 #define CHAP_PEER 0x8
357 #define EAP_WITHPEER 0x10
358 #define EAP_PEER 0x20
360 /* Values for auth_done only */
361 #define CHAP_MD5_WITHPEER 0x40
362 #define CHAP_MD5_PEER 0x80
363 #define CHAP_MS_SHIFT 8 /* LSB position for MS auths */
364 #define CHAP_MS_WITHPEER 0x100
365 #define CHAP_MS_PEER 0x200
366 #define CHAP_MS2_WITHPEER 0x400
367 #define CHAP_MS2_PEER 0x800
369 extern char *current_option; /* the name of the option being parsed */
370 extern int privileged_option; /* set iff the current option came from root */
371 extern char *option_source; /* string saying where the option came from */
372 extern int option_priority; /* priority of current options */
378 #define PHASE_INITIALIZE 1
379 #define PHASE_SERIALCONN 2
380 #define PHASE_DORMANT 3
381 #define PHASE_ESTABLISH 4
382 #define PHASE_AUTHENTICATE 5
383 #define PHASE_CALLBACK 6
384 #define PHASE_NETWORK 7
385 #define PHASE_RUNNING 8
386 #define PHASE_TERMINATE 9
387 #define PHASE_DISCONNECT 10
388 #define PHASE_HOLDOFF 11
389 #define PHASE_MASTER 12
392 * The following struct gives the addresses of procedures to call
393 * for a particular protocol.
396 u_short protocol; /* PPP protocol number */
397 /* Initialization procedure */
398 void (*init) __P((int unit));
399 /* Process a received packet */
400 void (*input) __P((int unit, u_char *pkt, int len));
401 /* Process a received protocol-reject */
402 void (*protrej) __P((int unit));
403 /* Lower layer has come up */
404 void (*lowerup) __P((int unit));
405 /* Lower layer has gone down */
406 void (*lowerdown) __P((int unit));
407 /* Open the protocol */
408 void (*open) __P((int unit));
409 /* Close the protocol */
410 void (*close) __P((int unit, char *reason));
411 /* Print a packet in readable form */
412 int (*printpkt) __P((u_char *pkt, int len, printer_func printer,
414 /* Process a received data packet */
415 void (*datainput) __P((int unit, u_char *pkt, int len));
416 bool enabled_flag; /* 0 iff protocol is disabled */
417 char *name; /* Text name of protocol */
418 char *data_name; /* Text name of corresponding data protocol */
419 option_t *options; /* List of command-line options */
420 /* Check requested options, assign defaults */
421 void (*check_options) __P((void));
422 /* Configure interface for demand-dial */
423 int (*demand_conf) __P((int unit));
424 /* Say whether to bring up link for this pkt */
425 int (*active_pkt) __P((u_char *pkt, int len));
428 /* Table of pointers to supported protocols */
429 extern struct protent *protocols[];
432 * This struct contains pointers to a set of procedures for
433 * doing operations on a "channel". A channel provides a way
434 * to send and receive PPP packets - the canonical example is
435 * a serial port device in PPP line discipline (or equivalently
436 * with PPP STREAMS modules pushed onto it).
439 /* set of options for this channel */
441 /* find and process a per-channel options file */
442 void (*process_extra_options) __P((void));
443 /* check all the options that have been given */
444 void (*check_options) __P((void));
445 /* get the channel ready to do PPP, return a file descriptor */
446 int (*connect) __P((void));
447 /* we're finished with the channel */
448 void (*disconnect) __P((void));
449 /* put the channel into PPP `mode' */
450 int (*establish_ppp) __P((int));
451 /* take the channel out of PPP `mode', restore loopback if demand */
452 void (*disestablish_ppp) __P((int));
453 /* set the transmit-side PPP parameters of the channel */
454 void (*send_config) __P((int, u_int32_t, int, int));
455 /* set the receive-side PPP parameters of the channel */
456 void (*recv_config) __P((int, u_int32_t, int, int));
457 /* cleanup on error or normal exit */
458 void (*cleanup) __P((void));
459 /* close the device, called in children after fork */
460 void (*close) __P((void));
463 extern struct channel *the_channel;
466 * This structure contains environment variables that are set or unset
470 struct userenv *ue_next;
471 char *ue_value; /* value (set only) */
472 bool ue_isset; /* 1 for set, 0 for unset */
473 bool ue_priv; /* from privileged source */
474 const char *ue_source; /* source name */
475 char ue_name[1]; /* variable name */
478 extern struct userenv *userenv_list;
484 /* Procedures exported from main.c. */
485 void set_ifunit __P((int)); /* set stuff that depends on ifunit */
486 void detach __P((void)); /* Detach from controlling tty */
487 void die __P((int)); /* Cleanup and exit */
488 void quit __P((void)); /* like die(1) */
489 void novm __P((char *)); /* Say we ran out of memory, and die */
490 void timeout __P((void (*func)(void *), void *arg, int s, int us));
491 /* Call func(arg) after s.us seconds */
492 void untimeout __P((void (*func)(void *), void *arg));
493 /* Cancel call to func(arg) */
494 void record_child __P((int, char *, void (*) (void *), void *, int));
495 pid_t safe_fork __P((int, int, int)); /* Fork & close stuff in child */
496 int device_script __P((char *cmd, int in, int out, int dont_wait));
497 /* Run `cmd' with given stdin and stdout */
498 pid_t run_program __P((char *prog, char **args, int must_exist,
499 void (*done)(void *), void *arg, int wait));
500 /* Run program prog with args in child */
501 void reopen_log __P((void)); /* (re)open the connection to syslog */
502 void print_link_stats __P((void)); /* Print stats, if available */
503 void reset_link_stats __P((int)); /* Reset (init) stats when link goes up */
504 void update_link_stats __P((int)); /* Get stats at link termination */
505 void script_setenv __P((char *, char *, int)); /* set script env var */
506 void script_unsetenv __P((char *)); /* unset script env var */
507 void new_phase __P((int)); /* signal start of new phase */
508 void add_notifier __P((struct notifier **, notify_func, void *));
509 void remove_notifier __P((struct notifier **, notify_func, void *));
510 void notify __P((struct notifier *, int));
511 int ppp_send_config __P((int, int, u_int32_t, int, int));
512 int ppp_recv_config __P((int, int, u_int32_t, int, int));
513 const char *protocol_name __P((int));
514 void remove_pidfiles __P((void));
515 void lock_db __P((void));
516 void unlock_db __P((void));
518 /* Procedures exported from tty.c. */
519 void tty_init __P((void));
521 /* Procedures exported from utils.c. */
522 void log_packet __P((u_char *, int, char *, int));
523 /* Format a packet and log it with syslog */
524 void print_string __P((char *, int, printer_func, void *));
525 /* Format a string for output */
526 int slprintf __P((char *, int, char *, ...)); /* sprintf++ */
527 int vslprintf __P((char *, int, char *, va_list)); /* vsprintf++ */
528 size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */
529 size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */
530 void dbglog __P((char *, ...)); /* log a debug message */
531 void info __P((char *, ...)); /* log an informational message */
532 void notice __P((char *, ...)); /* log a notice-level message */
533 void warn __P((char *, ...)); /* log a warning message */
534 void error __P((char *, ...)); /* log an error message */
535 void fatal __P((char *, ...)); /* log an error message and die(1) */
536 void init_pr_log __P((const char *, int)); /* initialize for using pr_log */
537 void pr_log __P((void *, char *, ...)); /* printer fn, output to syslog */
538 void end_pr_log __P((void)); /* finish up after using pr_log */
539 void dump_packet __P((const char *, u_char *, int));
540 /* dump packet to debug log if interesting */
541 ssize_t complete_read __P((int, void *, size_t));
542 /* read a complete buffer */
544 /* Procedures exported from auth.c */
545 void link_required __P((int)); /* we are starting to use the link */
546 void start_link __P((int)); /* bring the link up now */
547 void link_terminated __P((int)); /* we are finished with the link */
548 void link_down __P((int)); /* the LCP layer has left the Opened state */
549 void upper_layers_down __P((int));/* take all NCPs down */
550 void link_established __P((int)); /* the link is up; authenticate now */
551 void start_networks __P((int)); /* start all the network control protos */
552 void continue_networks __P((int)); /* start network [ip, etc] control protos */
553 void np_up __P((int, int)); /* a network protocol has come up */
554 void np_down __P((int, int)); /* a network protocol has gone down */
555 void np_finished __P((int, int)); /* a network protocol no longer needs link */
556 void auth_peer_fail __P((int, int));
557 /* peer failed to authenticate itself */
558 void auth_peer_success __P((int, int, int, char *, int));
559 /* peer successfully authenticated itself */
560 void auth_withpeer_fail __P((int, int));
561 /* we failed to authenticate ourselves */
562 void auth_withpeer_success __P((int, int, int));
563 /* we successfully authenticated ourselves */
564 void auth_check_options __P((void));
565 /* check authentication options supplied */
566 void auth_reset __P((int)); /* check what secrets we have */
567 int check_passwd __P((int, char *, int, char *, int, char **));
568 /* Check peer-supplied username/password */
569 int get_secret __P((int, char *, char *, char *, int *, int));
570 /* get "secret" for chap */
571 int get_srp_secret __P((int unit, char *client, char *server, char *secret,
573 int auth_ip_addr __P((int, u_int32_t));
574 /* check if IP address is authorized */
575 int auth_number __P((void)); /* check if remote number is authorized */
576 int bad_ip_adrs __P((u_int32_t));
577 /* check if IP address is unreasonable */
579 /* Procedures exported from demand.c */
580 void demand_conf __P((void)); /* config interface(s) for demand-dial */
581 void demand_block __P((void)); /* set all NPs to queue up packets */
582 void demand_unblock __P((void)); /* set all NPs to pass packets */
583 void demand_discard __P((void)); /* set all NPs to discard packets */
584 void demand_rexmit __P((int)); /* retransmit saved frames for an NP */
585 int loop_chars __P((unsigned char *, int)); /* process chars from loopback */
586 int loop_frame __P((unsigned char *, int)); /* should we bring link up? */
588 /* Procedures exported from multilink.c */
589 #ifdef HAVE_MULTILINK
590 void mp_check_options __P((void)); /* Check multilink-related options */
591 int mp_join_bundle __P((void)); /* join our link to an appropriate bundle */
592 void mp_exit_bundle __P((void)); /* have disconnected our link from bundle */
593 void mp_bundle_terminated __P((void));
594 char *epdisc_to_str __P((struct epdisc *)); /* string from endpoint discrim. */
595 int str_to_epdisc __P((struct epdisc *, char *)); /* endpt disc. from str */
597 #define mp_bundle_terminated() /* nothing */
598 #define mp_exit_bundle() /* nothing */
599 #define doing_multilink 0
600 #define multilink_master 0
603 /* Procedures exported from sys-*.c */
604 void sys_init __P((void)); /* Do system-dependent initialization */
605 void sys_cleanup __P((void)); /* Restore system state before exiting */
606 int sys_check_options __P((void)); /* Check options specified */
607 void sys_close __P((void)); /* Clean up in a child before execing */
608 int ppp_available __P((void)); /* Test whether ppp kernel support exists */
609 int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */
610 int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */
611 int tty_establish_ppp __P((int)); /* Turn serial port into a ppp interface */
612 void tty_disestablish_ppp __P((int)); /* Restore port to normal operation */
613 void generic_disestablish_ppp __P((int dev_fd)); /* Restore device setting */
614 int generic_establish_ppp __P((int dev_fd)); /* Make a ppp interface */
615 void make_new_bundle __P((int, int, int, int)); /* Create new bundle */
616 int bundle_attach __P((int)); /* Attach link to existing bundle */
617 void cfg_bundle __P((int, int, int, int)); /* Configure existing bundle */
618 void destroy_bundle __P((void)); /* Tell driver to destroy bundle */
619 void clean_check __P((void)); /* Check if line was 8-bit clean */
620 void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */
621 void restore_tty __P((int)); /* Restore port's original parameters */
622 void setdtr __P((int, int)); /* Raise or lower port's DTR line */
623 void output __P((int, u_char *, int)); /* Output a PPP packet */
624 void wait_input __P((struct timeval *));
625 /* Wait for input, with timeout */
626 void add_fd __P((int)); /* Add fd to set to wait for */
627 void remove_fd __P((int)); /* Remove fd from set to wait for */
628 int read_packet __P((u_char *)); /* Read PPP packet */
629 int get_loop_output __P((void)); /* Read pkts from loopback */
630 void tty_send_config __P((int, u_int32_t, int, int));
631 /* Configure i/f transmit parameters */
632 void tty_set_xaccm __P((ext_accm));
633 /* Set extended transmit ACCM */
634 void tty_recv_config __P((int, u_int32_t, int, int));
635 /* Configure i/f receive parameters */
636 int ccp_test __P((int, u_char *, int, int));
637 /* Test support for compression scheme */
638 void ccp_flags_set __P((int, int, int));
639 /* Set kernel CCP state */
640 int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */
641 int get_idle_time __P((int, struct ppp_idle *));
642 /* Find out how long link has been idle */
643 int get_ppp_stats __P((int, struct pppd_stats *));
644 /* Return link statistics */
645 void netif_set_mtu __P((int, int)); /* Set PPP interface MTU */
646 int netif_get_mtu __P((int)); /* Get PPP interface MTU */
647 int sifvjcomp __P((int, int, int, int));
648 /* Configure VJ TCP header compression */
649 int sifup __P((int)); /* Configure i/f up for one protocol */
650 int sifnpmode __P((int u, int proto, enum NPmode mode));
651 /* Set mode for handling packets for proto */
652 int sifdown __P((int)); /* Configure i/f down for one protocol */
653 int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t));
654 /* Configure IPv4 addresses for i/f */
655 int cifaddr __P((int, u_int32_t, u_int32_t));
656 /* Reset i/f IP addresses */
658 int ether_to_eui64(eui64_t *p_eui64); /* convert eth0 hw address to EUI64 */
659 int sif6addr __P((int, eui64_t, eui64_t));
660 /* Configure IPv6 addresses for i/f */
661 int cif6addr __P((int, eui64_t, eui64_t));
662 /* Remove an IPv6 address from i/f */
664 int sifdefaultroute __P((int, u_int32_t, u_int32_t));
665 /* Create default route through i/f */
666 int cifdefaultroute __P((int, u_int32_t, u_int32_t));
667 /* Delete default route through i/f */
668 int sifproxyarp __P((int, u_int32_t));
669 /* Add proxy ARP entry for peer */
670 int cifproxyarp __P((int, u_int32_t));
671 /* Delete proxy ARP entry for peer */
672 u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */
673 int lock __P((char *)); /* Create lock file for device */
674 int relock __P((int)); /* Rewrite lock file with new pid */
675 void unlock __P((void)); /* Delete previously-created lock file */
676 void logwtmp __P((const char *, const char *, const char *));
677 /* Write entry to wtmp file */
678 int get_host_seed __P((void)); /* Get host-dependent random number seed */
679 int have_route_to __P((u_int32_t)); /* Check if route to addr exists */
681 int set_filters __P((struct bpf_program *pass, struct bpf_program *active));
682 /* Set filter programs in kernel */
685 int sipxfaddr __P((int, unsigned long, unsigned char *));
686 int cipxfaddr __P((int));
688 int get_if_hwaddr __P((u_char *addr, char *name));
689 char *get_first_ethernet __P((void));
691 /* Procedures exported from options.c */
692 int setipaddr __P((char *, char **, int)); /* Set local/remote ip addresses */
693 int parse_args __P((int argc, char **argv));
694 /* Parse options from arguments given */
695 int options_from_file __P((char *filename, int must_exist, int check_prot,
697 /* Parse options from an options file */
698 int options_from_user __P((void)); /* Parse options from user's .ppprc */
699 int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */
700 int options_from_list __P((struct wordlist *, int privileged));
701 /* Parse options from a wordlist */
702 int getword __P((FILE *f, char *word, int *newlinep, char *filename));
703 /* Read a word from a file */
704 void option_error __P((char *fmt, ...));
705 /* Print an error message about an option */
706 int int_option __P((char *, int *));
707 /* Simplified number_option for decimal ints */
708 void add_options __P((option_t *)); /* Add extra options */
709 void check_options __P((void)); /* check values after all options parsed */
710 int override_value __P((const char *, int, const char *));
711 /* override value if permitted by priority */
712 void print_options __P((printer_func, void *));
713 /* print out values of all options */
715 int parse_dotted_ip __P((char *, u_int32_t *));
718 * Hooks to enable plugins to change various things.
720 extern int (*new_phase_hook) __P((int));
721 extern int (*idle_time_hook) __P((struct ppp_idle *));
722 extern int (*holdoff_hook) __P((void));
723 extern int (*pap_check_hook) __P((void));
724 extern int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
725 struct wordlist **paddrs,
726 struct wordlist **popts));
727 extern void (*pap_logout_hook) __P((void));
728 extern int (*pap_passwd_hook) __P((char *user, char *passwd));
729 extern int (*allowed_address_hook) __P((u_int32_t addr));
730 extern void (*ip_up_hook) __P((void));
731 extern void (*ip_down_hook) __P((void));
732 extern void (*ip_choose_hook) __P((u_int32_t *));
733 extern void (*ipv6_up_hook) __P((void));
734 extern void (*ipv6_down_hook) __P((void));
736 extern int (*chap_check_hook) __P((void));
737 extern int (*chap_passwd_hook) __P((char *user, char *passwd));
738 extern void (*multilink_join_hook) __P((void));
740 /* Let a plugin snoop sent and received packets. Useful for L2TP */
741 extern void (*snoop_recv_hook) __P((unsigned char *p, int len));
742 extern void (*snoop_send_hook) __P((unsigned char *p, int len));
745 * Inline versions of get/put char/short/long.
746 * Pointer is advanced; we assume that both arguments
747 * are lvalues and will already be in registers.
748 * cp MUST be u_char *.
750 #define GETCHAR(c, cp) { \
753 #define PUTCHAR(c, cp) { \
754 *(cp)++ = (u_char) (c); \
758 #define GETSHORT(s, cp) { \
759 (s) = *(cp)++ << 8; \
762 #define PUTSHORT(s, cp) { \
763 *(cp)++ = (u_char) ((s) >> 8); \
764 *(cp)++ = (u_char) (s); \
767 #define GETLONG(l, cp) { \
768 (l) = *(cp)++ << 8; \
769 (l) |= *(cp)++; (l) <<= 8; \
770 (l) |= *(cp)++; (l) <<= 8; \
773 #define PUTLONG(l, cp) { \
774 *(cp)++ = (u_char) ((l) >> 24); \
775 *(cp)++ = (u_char) ((l) >> 16); \
776 *(cp)++ = (u_char) ((l) >> 8); \
777 *(cp)++ = (u_char) (l); \
780 #define INCPTR(n, cp) ((cp) += (n))
781 #define DECPTR(n, cp) ((cp) -= (n))
784 * System dependent definitions for user-level 4.3BSD UNIX implementation.
787 #define TIMEOUT(r, f, t) timeout((r), (f), (t), 0)
788 #define UNTIMEOUT(r, f) untimeout((r), (f))
790 #define BCOPY(s, d, l) memcpy(d, s, l)
791 #define BZERO(s, n) memset(s, 0, n)
792 #define BCMP(s1, s2, l) memcmp(s1, s2, l)
794 #define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); }
797 * MAKEHEADER - Add Header fields to a packet.
799 #define MAKEHEADER(p, t) { \
800 PUTCHAR(PPP_ALLSTATIONS, p); \
801 PUTCHAR(PPP_UI, p); \
805 * Exit status values.
808 #define EXIT_FATAL_ERROR 1
809 #define EXIT_OPTION_ERROR 2
810 #define EXIT_NOT_ROOT 3
811 #define EXIT_NO_KERNEL_SUPPORT 4
812 #define EXIT_USER_REQUEST 5
813 #define EXIT_LOCK_FAILED 6
814 #define EXIT_OPEN_FAILED 7
815 #define EXIT_CONNECT_FAILED 8
816 #define EXIT_PTYCMD_FAILED 9
817 #define EXIT_NEGOTIATION_FAILED 10
818 #define EXIT_PEER_AUTH_FAILED 11
819 #define EXIT_IDLE_TIMEOUT 12
820 #define EXIT_CONNECT_TIME 13
821 #define EXIT_CALLBACK 14
822 #define EXIT_PEER_DEAD 15
823 #define EXIT_HANGUP 16
824 #define EXIT_LOOPBACK 17
825 #define EXIT_INIT_FAILED 18
826 #define EXIT_AUTH_TOPEER_FAILED 19
828 #define EXIT_TRAFFIC_LIMIT 20
830 #define EXIT_CNID_AUTH_FAILED 21
833 * Debug macros. Slightly useful for finding bugs in pppd, not particularly
834 * useful for finding out why your connection isn't being established.
841 #define DEBUGIPV6CP 1
846 #ifndef LOG_PPP /* we use LOG_LOCAL2 for syslog by default */
847 #if defined(DEBUGMAIN) || defined(DEBUGFSM) || defined(DEBUGSYS) \
848 || defined(DEBUGLCP) || defined(DEBUGIPCP) || defined(DEBUGUPAP) \
849 || defined(DEBUGCHAP) || defined(DEBUG) || defined(DEBUGIPV6CP)
850 #define LOG_PPP LOG_LOCAL2
852 #define LOG_PPP LOG_DAEMON
857 #define MAINDEBUG(x) if (debug) dbglog x
863 #define SYSDEBUG(x) if (debug) dbglog x
869 #define FSMDEBUG(x) if (debug) dbglog x
875 #define LCPDEBUG(x) if (debug) dbglog x
881 #define IPCPDEBUG(x) if (debug) dbglog x
887 #define IPV6CPDEBUG(x) if (debug) dbglog x
889 #define IPV6CPDEBUG(x)
893 #define UPAPDEBUG(x) if (debug) dbglog x
899 #define CHAPDEBUG(x) if (debug) dbglog x
905 #define IPXCPDEBUG(x) if (debug) dbglog x
907 #define IPXCPDEBUG(x)
911 #if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE)
915 #endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */
919 #define MIN(a, b) ((a) < (b)? (a): (b))
922 #define MAX(a, b) ((a) > (b)? (a): (b))
926 #define offsetof(type, member) ((size_t) &((type *)0)->member)
929 #endif /* __PPP_H__ */