2 * pppd.h - PPP daemon global declarations.
4 * Copyright (c) 1989 Carnegie Mellon University.
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.
19 * $Id: pppd.h,v 1.59 2001/03/12 22:58:59 paulus Exp $
29 #include <stdio.h> /* for FILE */
30 #include <limits.h> /* for NGROUPS_MAX */
31 #include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */
32 #include <sys/types.h> /* for u_int32_t, if defined */
33 #include <sys/time.h> /* for struct timeval */
34 #include <net/ppp_defs.h>
35 #include "patchlevel.h"
42 #define __V(x) (va_alist) va_dcl
61 #define NUM_PPP 1 /* One PPP interface supported (per process) */
62 #define MAXWORDLEN 1024 /* max length of word in file (incl null) */
63 #define MAXARGS 1 /* max # args to a command */
64 #define MAXNAMELEN 256 /* max length of hostname or name for auth */
65 #define MAXSECRETLEN 256 /* max length of password or secret */
66 #define MAXSRVNAMELEN 256
68 * Option descriptor structure.
71 typedef unsigned char bool;
84 char *name; /* name of the option */
97 /* Values for flags */
98 #define OPT_VALUE 0xff /* mask for presupplied value */
99 #define OPT_HEX 0x100 /* int option is in hex */
100 #define OPT_NOARG 0x200 /* option doesn't take argument */
101 #define OPT_OR 0x400 /* OR in argument to value */
102 #define OPT_INC 0x800 /* increment value */
103 #define OPT_PRIV 0x1000 /* privileged option */
104 #define OPT_STATIC 0x2000 /* string option goes into static array */
105 #define OPT_LLIMIT 0x4000 /* check value against lower limit */
106 #define OPT_ULIMIT 0x8000 /* check value against upper limit */
107 #define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT)
108 #define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */
109 #define OPT_HIDE 0x10000 /* for o_string, print value as ?????? */
110 #define OPT_A2LIST 0x10000 /* for o_special, keep list of values */
111 #define OPT_NOINCR 0x20000 /* value mustn't be increased */
112 #define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */
113 #define OPT_PRIO 0x80000 /* process option priorities for this option */
114 #define OPT_PRIOSUB 0x100000 /* subsidiary member of priority group */
115 #define OPT_ALIAS 0x200000 /* option is alias for previous option */
116 #define OPT_A2COPY 0x400000 /* addr2 -> second location to rcv value */
117 #define OPT_ENABLE 0x800000 /* use *addr2 as enable for option */
118 #define OPT_A2CLR 0x1000000 /* clear *(bool *)addr2 */
119 #define OPT_PRIVFIX 0x2000000 /* user can't override if set by root */
120 #define OPT_INITONLY 0x4000000 /* option can only be set in init phase */
121 #define OPT_DEVEQUIV 0x8000000 /* equiv to device name */
122 #define OPT_DEVNAM (OPT_INITONLY | OPT_DEVEQUIV)
123 #define OPT_A2PRINTER 0x10000000 /* *addr2 is a fn for printing option */
124 #define OPT_A2STRVAL 0x20000000 /* *addr2 points to current string value */
125 #define OPT_NOPRINT 0x40000000 /* don't print this option at all */
127 #define OPT_VAL(x) ((x) & OPT_VALUE)
129 /* Values for priority */
130 #define OPRIO_DEFAULT 0 /* a default value */
131 #define OPRIO_CFGFILE 1 /* value from a configuration file */
132 #define OPRIO_CMDLINE 2 /* value from the command line */
133 #define OPRIO_SECFILE 3 /* value from options in a secrets file */
134 #define OPRIO_ROOT 100 /* added to priority if OPT_PRIVFIX && root */
137 #define GIDSET_TYPE gid_t
140 /* Structure representing a list of permitted IP addresses. */
141 struct permitted_ip {
142 int permit; /* 1 = permit, 0 = forbid */
143 u_int32_t base; /* match if (addr & mask) == base */
144 u_int32_t mask; /* base and mask are in network byte order */
148 * Unfortunately, the linux kernel driver uses a different structure
149 * for statistics from the rest of the ports.
150 * This structure serves as a common representation for the bits
154 unsigned int bytes_in;
155 unsigned int bytes_out;
158 /* Used for storing a sequence of words. Usually malloced. */
160 struct wordlist *next;
164 /* An endpoint discriminator, used with multilink. */
165 #define MAX_ENDP_LEN 20 /* maximum length of discriminator value */
168 unsigned char length;
169 unsigned char value[MAX_ENDP_LEN];
172 /* values for epdisc.class */
173 #define EPD_NULL 0 /* null discriminator, no data */
178 #define EPD_PHONENUM 5
180 typedef void (*notify_func) __P((void *, int));
183 struct notifier *next;
192 extern int hungup; /* Physical layer has disconnected */
193 extern int ifunit; /* Interface unit number */
194 extern char ifname[]; /* Interface name */
195 extern char hostname[]; /* Our hostname */
196 extern u_char outpacket_buf[]; /* Buffer for outgoing packets */
197 extern int phase; /* Current state of link - see values below */
198 extern int baud_rate; /* Current link speed in bits/sec */
199 extern char *progname; /* Name of this program */
200 extern int redirect_stderr;/* Connector's stderr should go to file */
201 extern char peer_authname[];/* Authenticated name of peer */
202 extern int privileged; /* We were run by real-uid root */
203 extern int need_holdoff; /* Need holdoff period after link terminates */
204 extern char **script_env; /* Environment variables for scripts */
205 extern int detached; /* Have detached from controlling tty */
206 extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */
207 extern int ngroups; /* How many groups valid in groups */
208 extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */
209 extern int link_stats_valid; /* set if link_stats is valid */
210 extern int link_connect_time; /* time the link was up for */
211 extern int using_pty; /* using pty as device (notty or pty opt.) */
212 extern int log_to_fd; /* logging to this fd as well as syslog */
213 extern bool log_default; /* log_to_fd is default (stdout) */
214 extern char *no_ppp_msg; /* message to print if ppp not in kernel */
215 extern volatile int status; /* exit status for pppd */
216 extern bool devnam_fixed; /* can no longer change devnam */
217 extern int unsuccess; /* # unsuccessful connection attempts */
218 extern int do_callback; /* set if we want to do callback next */
219 extern int doing_callback; /* set if this is a callback */
220 extern char ppp_devnam[MAXPATHLEN];
221 extern struct notifier *pidchange; /* for notifications of pid changing */
222 extern struct notifier *phasechange; /* for notifications of phase changes */
223 extern struct notifier *exitnotify; /* for notification that we're exiting */
224 extern struct notifier *sigreceived; /* notification of received signal */
225 extern int listen_time; /* time to listen first (ms) */
227 /* Values for do_callback and doing_callback */
228 #define CALLBACK_DIALIN 1 /* we are expecting the call back */
229 #define CALLBACK_DIALOUT 2 /* we are dialling out to call back */
232 #define OFFSET2 100000
235 * Variables set by command-line options.
239 extern int DEB_DISC,DEB_DISC2;
240 extern int debug; /* Debug flag */
241 extern int kdebugflag; /* Tell kernel to print debug messages */
242 extern int default_device; /* Using /dev/tty or equivalent */
243 extern char devnam[MAXPATHLEN]; /* Device name */
244 extern int crtscts; /* Use hardware flow control */
245 extern bool modem; /* Use modem control lines */
246 extern int inspeed; /* Input/Output speed requested */
247 extern u_int32_t netmask; /* IP netmask to set on interface */
248 extern bool lockflag; /* Create lock file to lock the serial dev */
249 extern bool nodetach; /* Don't detach from controlling tty */
250 extern bool updetach; /* Detach from controlling tty when link up */
251 extern char *initializer; /* Script to initialize physical link */
252 extern char *connect_script; /* Script to establish physical link */
253 extern char *disconnect_script; /* Script to disestablish physical link */
254 extern char *welcomer; /* Script to welcome client after connection */
255 extern char *ptycommand; /* Command to run on other side of pty */
256 extern int maxconnect; /* Maximum connect time (seconds) */
257 extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */
258 extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */
259 extern bool auth_required; /* Peer is required to authenticate */
260 extern bool persist; /* Reopen link after it goes down */
261 extern bool uselogin; /* Use /etc/passwd for checking PAP */
262 extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */
263 extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
264 extern bool explicit_remote;/* remote_name specified with remotename opt */
265 extern bool demand; /* Do dial-on-demand */
266 extern char *ipparam; /* Extra parameter for ip up/down scripts */
267 extern bool cryptpap; /* Others' PAP passwords are encrypted */
268 extern int idle_time_limit;/* Shut down link if idle for this long */
269 extern int holdoff; /* Dead time before restarting */
270 extern bool holdoff_specified; /* true if user gave a holdoff value */
271 extern bool notty; /* Stdin/out is not a tty */
272 extern char *pty_socket; /* Socket to connect to pty */
273 extern char *record_file; /* File to record chars sent/received */
274 extern bool sync_serial; /* Device is synchronous serial device */
275 extern int maxfail; /* Max # of unsuccessful connection attempts */
276 extern char linkname[MAXPATHLEN]; /* logical name for link */
277 extern bool tune_kernel; /* May alter kernel settings as necessary */
278 extern int connect_delay; /* Time to delay after connect script */
279 extern int max_data_rate; /* max bytes/sec through charshunt */
280 extern int req_unit; /* interface unit number to use */
281 extern char req_name[MAXPATHLEN]; /* logical name for link */
282 extern bool multilink; /* enable multilink operation */
283 extern bool noendpoint; /* don't send or accept endpt. discrim. */
284 extern char *bundle_name; /* bundle name for multilink */
285 extern bool dump_options; /* print out option values */
286 extern bool dryrun; /* check everything, print options, exit */
289 extern struct bpf_program pass_filter; /* Filter for pkts to pass */
290 extern struct bpf_program active_filter; /* Filter for link-active pkts */
294 extern bool ms_lanman; /* Use LanMan password instead of NT */
295 /* Has meaning only with MS-CHAP challenges */
298 extern char *current_option; /* the name of the option being parsed */
299 extern int privileged_option; /* set iff the current option came from root */
300 extern char *option_source; /* string saying where the option came from */
301 extern int option_priority; /* priority of current options */
307 #define PHASE_INITIALIZE 1
308 #define PHASE_SERIALCONN 2
309 #define PHASE_DORMANT 3
310 #define PHASE_ESTABLISH 4
311 #define PHASE_AUTHENTICATE 5
312 #define PHASE_CALLBACK 6
313 #define PHASE_NETWORK 7
314 #define PHASE_RUNNING 8
315 #define PHASE_TERMINATE 9
316 #define PHASE_DISCONNECT 10
317 #define PHASE_HOLDOFF 11
320 * The following struct gives the addresses of procedures to call
321 * for a particular protocol.
324 u_short protocol; /* PPP protocol number */
325 /* Initialization procedure */
326 void (*init) __P((int unit));
327 /* Process a received packet */
328 void (*input) __P((int unit, u_char *pkt, int len));
329 /* Process a received protocol-reject */
330 void (*protrej) __P((int unit));
331 /* Lower layer has come up */
332 void (*lowerup) __P((int unit));
333 /* Lower layer has gone down */
334 void (*lowerdown) __P((int unit));
335 /* Open the protocol */
336 void (*open) __P((int unit));
337 /* Close the protocol */
338 void (*close) __P((int unit, char *reason));
339 /* Print a packet in readable form */
340 int (*printpkt) __P((u_char *pkt, int len,
341 void (*printer) __P((void *, char *, ...)),
343 /* Process a received data packet */
344 void (*datainput) __P((int unit, u_char *pkt, int len));
345 bool enabled_flag; /* 0 iff protocol is disabled */
346 char *name; /* Text name of protocol */
347 char *data_name; /* Text name of corresponding data protocol */
348 option_t *options; /* List of command-line options */
349 /* Check requested options, assign defaults */
350 void (*check_options) __P((void));
351 /* Configure interface for demand-dial */
352 int (*demand_conf) __P((int unit));
353 /* Say whether to bring up link for this pkt */
354 int (*active_pkt) __P((u_char *pkt, int len));
357 /* Table of pointers to supported protocols */
358 extern struct protent *protocols[];
361 * This struct contains pointers to a set of procedures for
362 * doing operations on a "channel". A channel provides a way
363 * to send and receive PPP packets - the canonical example is
364 * a serial port device in PPP line discipline (or equivalently
365 * with PPP STREAMS modules pushed onto it).
368 /* set of options for this channel */
370 /* find and process a per-channel options file */
371 void (*process_extra_options) __P((void));
372 /* check all the options that have been given */
373 void (*check_options) __P((void));
374 /* get the channel ready to do PPP, return a file descriptor */
375 int (*connect) __P((void));
376 /* we're finished with the channel */
377 void (*disconnect) __P((void));
378 /* put the channel into PPP `mode' */
379 int (*establish_ppp) __P((int));
380 /* take the channel out of PPP `mode', restore loopback if demand */
381 void (*disestablish_ppp) __P((int));
382 /* set the transmit-side PPP parameters of the channel */
383 void (*send_config) __P((int, u_int32_t, int, int));
384 /* set the receive-side PPP parameters of the channel */
385 void (*recv_config) __P((int, u_int32_t, int, int));
386 /* cleanup on error or normal exit */
387 void (*cleanup) __P((void));
388 /* close the device, called in children after fork */
389 void (*close) __P((void));
392 extern struct channel *the_channel;
394 #define ppp_send_config(unit, mtu, accm, pc, acc) \
396 if (the_channel->send_config) \
397 (*the_channel->send_config)((mtu), (accm), (pc), (acc)); \
400 #define ppp_recv_config(unit, mtu, accm, pc, acc) \
402 if (the_channel->send_config) \
403 (*the_channel->recv_config)((mtu), (accm), (pc), (acc)); \
410 /* Procedures exported from main.c. */
411 void set_ifunit __P((int)); /* set stuff that depends on ifunit */
412 void detach __P((void)); /* Detach from controlling tty */
413 void die __P((int)); /* Cleanup and exit */
414 void quit __P((void)); /* like die(1) */
415 void novm __P((char *)); /* Say we ran out of memory, and die */
416 void timeout __P((void (*func)(void *), void *arg, int s, int us));
417 /* Call func(arg) after s.us seconds */
418 void untimeout __P((void (*func)(void *), void *arg));
419 /* Cancel call to func(arg) */
420 void record_child __P((int, char *, void (*) (void *), void *));
421 int device_script __P((char *cmd, int in, int out, int dont_wait));
422 /* Run `cmd' with given stdin and stdout */
423 pid_t run_program __P((char *prog, char **args, int must_exist,
424 void (*done)(void *), void *arg));
425 /* Run program prog with args in child */
426 void reopen_log __P((void)); /* (re)open the connection to syslog */
427 void update_link_stats __P((int)); /* Get stats at link termination */
428 void script_setenv __P((char *, char *, int)); /* set script env var */
429 void script_unsetenv __P((char *)); /* unset script env var */
430 void new_phase __P((int)); /* signal start of new phase */
431 void add_notifier __P((struct notifier **, notify_func, void *));
432 void remove_notifier __P((struct notifier **, notify_func, void *));
433 void notify __P((struct notifier *, int));
435 /* Procedures exported from tty.c. */
436 void tty_init __P((void));
438 /* Procedures exported from utils.c. */
439 void log_packet __P((u_char *, int, char *, int));
440 /* Format a packet and log it with syslog */
441 void print_string __P((char *, int, void (*) (void *, char *, ...),
442 void *)); /* Format a string for output */
443 int slprintf __P((char *, int, char *, ...)); /* sprintf++ */
444 int vslprintf __P((char *, int, char *, va_list)); /* vsprintf++ */
445 size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */
446 size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */
447 void dbglog __P((char *, ...)); /* log a debug message */
448 void info __P((char *, ...)); /* log an informational message */
449 void notice __P((char *, ...)); /* log a notice-level message */
450 void warn __P((char *, ...)); /* log a warning message */
451 void error __P((char *, ...)); /* log an error message */
452 void fatal __P((char *, ...)); /* log an error message and die(1) */
453 void init_pr_log __P((char *, int)); /* initialize for using pr_log */
454 void pr_log __P((void *, char *, ...)); /* printer fn, output to syslog */
455 void end_pr_log __P((void)); /* finish up after using pr_log */
457 /* Procedures exported from auth.c */
458 void link_required __P((int)); /* we are starting to use the link */
459 void link_terminated __P((int)); /* we are finished with the link */
460 void link_down __P((int)); /* the LCP layer has left the Opened state */
461 void link_established __P((int)); /* the link is up; authenticate now */
462 void start_networks __P((void)); /* start all the network control protos */
463 void np_up __P((int, int)); /* a network protocol has come up */
464 void np_down __P((int, int)); /* a network protocol has gone down */
465 void np_finished __P((int, int)); /* a network protocol no longer needs link */
466 void auth_peer_fail __P((int, int));
467 /* peer failed to authenticate itself */
468 void auth_peer_success __P((int, int, char *, int));
469 /* peer successfully authenticated itself */
470 void auth_withpeer_fail __P((int, int));
471 /* we failed to authenticate ourselves */
472 void auth_withpeer_success __P((int, int));
473 /* we successfully authenticated ourselves */
474 void auth_check_options __P((void));
475 /* check authentication options supplied */
476 void auth_reset __P((int)); /* check what secrets we have */
477 int check_passwd __P((int, char *, int, char *, int, char **));
478 /* Check peer-supplied username/password */
479 int get_secret __P((int, char *, char *, char *, int *, int));
480 /* get "secret" for chap */
481 int auth_ip_addr __P((int, u_int32_t));
482 /* check if IP address is authorized */
483 int bad_ip_adrs __P((u_int32_t));
484 /* check if IP address is unreasonable */
486 /* Procedures exported from demand.c */
487 void demand_conf __P((void)); /* config interface(s) for demand-dial */
488 void demand_block __P((void)); /* set all NPs to queue up packets */
489 void demand_unblock __P((void)); /* set all NPs to pass packets */
490 void demand_discard __P((void)); /* set all NPs to discard packets */
491 void demand_rexmit __P((int)); /* retransmit saved frames for an NP */
492 int loop_chars __P((unsigned char *, int)); /* process chars from loopback */
493 int loop_frame __P((unsigned char *, int)); /* should we bring link up? */
495 /* Procedures exported from multilink.c */
496 void mp_check_options __P((void)); /* Check multilink-related options */
497 int mp_join_bundle __P((void)); /* join our link to an appropriate bundle */
498 char *epdisc_to_str __P((struct epdisc *)); /* string from endpoint discrim. */
499 int str_to_epdisc __P((struct epdisc *, char *)); /* endpt disc. from str */
501 /* Procedures exported from sys-*.c */
502 void sys_init __P((void)); /* Do system-dependent initialization */
503 void sys_cleanup __P((void)); /* Restore system state before exiting */
504 int sys_check_options __P((void)); /* Check options specified */
505 void sys_close __P((void)); /* Clean up in a child before execing */
506 int ppp_available __P((void)); /* Test whether ppp kernel support exists */
507 int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */
508 int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */
509 int tty_establish_ppp __P((int)); /* Turn serial port into a ppp interface */
510 void tty_disestablish_ppp __P((int)); /* Restore port to normal operation */
511 void generic_disestablish_ppp __P((int dev_fd)); /* Restore device setting */
512 int generic_establish_ppp __P((int dev_fd)); /* Make a ppp interface */
513 void make_new_bundle __P((int, int, int, int)); /* Create new bundle */
514 int bundle_attach __P((int)); /* Attach link to existing bundle */
515 void cfg_bundle __P((int, int, int, int)); /* Configure existing bundle */
516 void clean_check __P((void)); /* Check if line was 8-bit clean */
517 void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */
518 void restore_tty __P((int)); /* Restore port's original parameters */
519 void setdtr __P((int, int)); /* Raise or lower port's DTR line */
520 void output __P((int, u_char *, int)); /* Output a PPP packet */
521 void wait_input __P((struct timeval *));
522 /* Wait for input, with timeout */
523 void add_fd __P((int)); /* Add fd to set to wait for */
524 void remove_fd __P((int)); /* Remove fd from set to wait for */
525 int read_packet __P((u_char *)); /* Read PPP packet */
526 int get_loop_output __P((void)); /* Read pkts from loopback */
527 void tty_send_config __P((int, u_int32_t, int, int));
528 /* Configure i/f transmit parameters */
529 void tty_set_xaccm __P((ext_accm));
530 /* Set extended transmit ACCM */
531 void tty_recv_config __P((int, u_int32_t, int, int));
532 /* Configure i/f receive parameters */
533 int ccp_test __P((int, u_char *, int, int));
534 /* Test support for compression scheme */
535 void ccp_flags_set __P((int, int, int));
536 /* Set kernel CCP state */
537 int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */
538 int get_idle_time __P((int, struct ppp_idle *));
539 /* Find out how long link has been idle */
540 int get_ppp_stats __P((int, struct pppd_stats *));
541 /* Return link statistics */
542 void netif_set_mtu __P((int, int)); /* Set PPP interface MTU */
543 int sifvjcomp __P((int, int, int, int));
544 /* Configure VJ TCP header compression */
545 int sifup __P((int)); /* Configure i/f up for one protocol */
546 int sifnpmode __P((int u, int proto, enum NPmode mode));
547 /* Set mode for handling packets for proto */
548 int sifdown __P((int)); /* Configure i/f down for one protocol */
549 int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t));
550 /* Configure IPv4 addresses for i/f */
551 int cifaddr __P((int, u_int32_t, u_int32_t));
552 /* Reset i/f IP addresses */
554 int sif6addr __P((int, eui64_t, eui64_t));
555 /* Configure IPv6 addresses for i/f */
556 int cif6addr __P((int, eui64_t, eui64_t));
557 /* Remove an IPv6 address from i/f */
559 int sifdefaultroute __P((int, u_int32_t, u_int32_t));
560 /* Create default route through i/f */
561 int cifdefaultroute __P((int, u_int32_t, u_int32_t));
562 /* Delete default route through i/f */
563 int sifproxyarp __P((int, u_int32_t));
564 /* Add proxy ARP entry for peer */
565 int cifproxyarp __P((int, u_int32_t));
566 /* Delete proxy ARP entry for peer */
567 u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */
568 int lock __P((char *)); /* Create lock file for device */
569 int relock __P((int)); /* Rewrite lock file with new pid */
570 void unlock __P((void)); /* Delete previously-created lock file */
571 void logwtmp __P((const char *, const char *, const char *));
572 /* Write entry to wtmp file */
573 int get_host_seed __P((void)); /* Get host-dependent random number seed */
574 int have_route_to __P((u_int32_t)); /* Check if route to addr exists */
576 int set_filters __P((struct bpf_program *pass, struct bpf_program *active));
577 /* Set filter programs in kernel */
580 int sipxfaddr __P((int, unsigned long, unsigned char *));
581 int cipxfaddr __P((int));
583 int get_if_hwaddr __P((u_char *addr, char *name));
584 char *get_first_ethernet __P((void));
586 /* Procedures exported from options.c */
587 int parse_args __P((int argc, char **argv));
588 /* Parse options from arguments given */
589 int options_from_file __P((char *filename, int must_exist, int check_prot,
591 /* Parse options from an options file */
592 int options_from_user __P((void)); /* Parse options from user's .ppprc */
593 int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */
594 int options_from_list __P((struct wordlist *, int privileged));
595 /* Parse options from a wordlist */
596 int getword __P((FILE *f, char *word, int *newlinep, char *filename));
597 /* Read a word from a file */
598 void option_error __P((char *fmt, ...));
599 /* Print an error message about an option */
600 int int_option __P((char *, int *));
601 /* Simplified number_option for decimal ints */
602 void add_options __P((option_t *)); /* Add extra options */
603 void check_options __P((void)); /* check values after all options parsed */
604 int remove_option __P((char *)); /* Disable the specified option */
605 int override_value __P((const char *, int, const char *));
606 /* override value if permitted by priority */
607 void print_options __P((void (*) __P((void *, char *, ...)), void *));
608 /* print out values of all options */
610 int parse_dotted_ip __P((char *, u_int32_t *));
613 * Hooks to enable plugins to change various things.
615 extern int (*new_phase_hook) __P((int));
616 extern int (*idle_time_hook) __P((struct ppp_idle *));
617 extern int (*holdoff_hook) __P((void));
618 extern int (*pap_check_hook) __P((void));
619 extern int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
620 struct wordlist **paddrs,
621 struct wordlist **popts));
622 extern void (*pap_logout_hook) __P((void));
623 extern int (*pap_passwd_hook) __P((char *user, char *passwd));
624 extern void (*ip_up_hook) __P((void));
625 extern void (*ip_down_hook) __P((void));
626 extern void (*ip_choose_hook) __P((u_int32_t *));
629 extern void create_msg(int lognumber);
632 extern bool refuse_pap;
633 extern bool refuse_chap;
635 extern int autoscanP2;
636 extern int ses_retries;
637 extern bool llc_encaps;
638 extern bool vc_encaps;
639 extern char session_path[];
640 extern int redisconn;
641 extern void save_session_info(unsigned char *remote_addr, int sid);
642 extern int get_sock_intf(const char *devnam);
643 extern char oldsession[MAXPATHLEN]; /* Mac address and session ID of the previous session */
644 extern char pppoe_srv_name[];
651 * Inline versions of get/put char/short/long.
652 * Pointer is advanced; we assume that both arguments
653 * are lvalues and will already be in registers.
654 * cp MUST be u_char *.
656 #define GETCHAR(c, cp) { \
659 #define PUTCHAR(c, cp) { \
660 *(cp)++ = (u_char) (c); \
664 #define GETSHORT(s, cp) { \
665 (s) = *(cp)++ << 8; \
668 #define PUTSHORT(s, cp) { \
669 *(cp)++ = (u_char) ((s) >> 8); \
670 *(cp)++ = (u_char) (s); \
673 #define GETLONG(l, cp) { \
674 (l) = *(cp)++ << 8; \
675 (l) |= *(cp)++; (l) <<= 8; \
676 (l) |= *(cp)++; (l) <<= 8; \
679 #define PUTLONG(l, cp) { \
680 *(cp)++ = (u_char) ((l) >> 24); \
681 *(cp)++ = (u_char) ((l) >> 16); \
682 *(cp)++ = (u_char) ((l) >> 8); \
683 *(cp)++ = (u_char) (l); \
686 #define INCPTR(n, cp) ((cp) += (n))
687 #define DECPTR(n, cp) ((cp) -= (n))
690 * System dependent definitions for user-level 4.3BSD UNIX implementation.
693 #define TIMEOUT(r, f, t) timeout((r), (f), (t), 0)
694 #define UNTIMEOUT(r, f) untimeout((r), (f))
696 #define BCOPY(s, d, l) memcpy(d, s, l)
697 #define BZERO(s, n) memset(s, 0, n)
699 #define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); }
702 * MAKEHEADER - Add Header fields to a packet.
704 #define MAKEHEADER(p, t) { \
705 PUTCHAR(PPP_ALLSTATIONS, p); \
706 PUTCHAR(PPP_UI, p); \
710 * Exit status values.
713 #define EXIT_FATAL_ERROR 1
714 #define EXIT_OPTION_ERROR 2
715 #define EXIT_NOT_ROOT 3
716 #define EXIT_NO_KERNEL_SUPPORT 4
717 #define EXIT_USER_REQUEST 5
718 #define EXIT_LOCK_FAILED 6
719 #define EXIT_OPEN_FAILED 7
720 #define EXIT_CONNECT_FAILED 8
721 #define EXIT_PTYCMD_FAILED 9
722 #define EXIT_NEGOTIATION_FAILED 10
723 #define EXIT_PEER_AUTH_FAILED 11
724 #define EXIT_IDLE_TIMEOUT 12
725 #define EXIT_CONNECT_TIME 13
726 #define EXIT_CALLBACK 14
727 #define EXIT_PEER_DEAD 15
728 #define EXIT_HANGUP 16
729 #define EXIT_LOOPBACK 17
730 #define EXIT_INIT_FAILED 18
731 #define EXIT_AUTH_TOPEER_FAILED 19
734 * Debug macros. Slightly useful for finding bugs in pppd, not particularly
735 * useful for finding out why your connection isn't being established.
742 #define DEBUGIPV6CP 1
747 #ifndef LOG_PPP /* we use LOG_LOCAL2 for syslog by default */
748 #if defined(DEBUGMAIN) || defined(DEBUGFSM) || defined(DEBUGSYS) \
749 || defined(DEBUGLCP) || defined(DEBUGIPCP) || defined(DEBUGUPAP) \
750 || defined(DEBUGCHAP) || defined(DEBUG) || defined(DEBUGIPV6CP)
751 #define LOG_PPP LOG_LOCAL2
753 #define LOG_PPP LOG_DAEMON
758 #define MAINDEBUG(x) if (debug) dbglog x
764 #define SYSDEBUG(x) if (debug) dbglog x
770 #define FSMDEBUG(x) if (debug) dbglog x
776 #define LCPDEBUG(x) if (debug) dbglog x
782 #define IPCPDEBUG(x) if (debug) dbglog x
788 #define IPV6CPDEBUG(x) if (debug) dbglog x
790 #define IPV6CPDEBUG(x)
794 #define UPAPDEBUG(x) if (debug) dbglog x
800 #define CHAPDEBUG(x) if (debug) dbglog x
806 #define IPXCPDEBUG(x) if (debug) dbglog x
808 #define IPXCPDEBUG(x)
812 #if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE)
816 #endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */
820 #define MIN(a, b) ((a) < (b)? (a): (b))
823 #define MAX(a, b) ((a) > (b)? (a): (b))
826 #endif /* __PPP_H__ */