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 1.67 2002/04/02 13:54:59 dfs 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
55 #define NUM_PPP 1 /* One PPP interface supported (per process) */
56 #define MAXWORDLEN 1024 /* max length of word in file (incl null) */
57 #define MAXARGS 1 /* max # args to a command */
58 #define MAXNAMELEN 256 /* max length of hostname or name for auth */
59 #define MAXSECRETLEN 256 /* max length of password or secret */
62 * Option descriptor structure.
65 typedef unsigned char bool;
78 char *name; /* name of the option */
92 /* Values for flags */
93 #define OPT_VALUE 0xff /* mask for presupplied value */
94 #define OPT_HEX 0x100 /* int option is in hex */
95 #define OPT_NOARG 0x200 /* option doesn't take argument */
96 #define OPT_OR 0x400 /* OR in argument to value */
97 #define OPT_INC 0x800 /* increment value */
98 #define OPT_A2OR 0x800 /* for o_bool, OR arg to *(u_char *)addr2 */
99 #define OPT_PRIV 0x1000 /* privileged option */
100 #define OPT_STATIC 0x2000 /* string option goes into static array */
101 #define OPT_LLIMIT 0x4000 /* check value against lower limit */
102 #define OPT_ULIMIT 0x8000 /* check value against upper limit */
103 #define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT)
104 #define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */
105 #define OPT_HIDE 0x10000 /* for o_string, print value as ?????? */
106 #define OPT_A2LIST 0x10000 /* for o_special, keep list of values */
107 #define OPT_A2CLRB 0x10000 /* o_bool, clr val bits in *(u_char *)addr2 */
108 #define OPT_NOINCR 0x20000 /* value mustn't be increased */
109 #define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */
110 #define OPT_PRIO 0x80000 /* process option priorities for this option */
111 #define OPT_PRIOSUB 0x100000 /* subsidiary member of priority group */
112 #define OPT_ALIAS 0x200000 /* option is alias for previous option */
113 #define OPT_A2COPY 0x400000 /* addr2 -> second location to rcv value */
114 #define OPT_ENABLE 0x800000 /* use *addr2 as enable for option */
115 #define OPT_A2CLR 0x1000000 /* clear *(bool *)addr2 */
116 #define OPT_PRIVFIX 0x2000000 /* user can't override if set by root */
117 #define OPT_INITONLY 0x4000000 /* option can only be set in init phase */
118 #define OPT_DEVEQUIV 0x8000000 /* equiv to device name */
119 #define OPT_DEVNAM (OPT_INITONLY | OPT_DEVEQUIV)
120 #define OPT_A2PRINTER 0x10000000 /* *addr2 is a fn for printing option */
121 #define OPT_A2STRVAL 0x20000000 /* *addr2 points to current string value */
122 #define OPT_NOPRINT 0x40000000 /* don't print this option at all */
123 #define OPT_A3OR 0x80000000 /* addr3 -> third location to rcv | value */
125 #define OPT_VAL(x) ((x) & OPT_VALUE)
127 /* Values for priority */
128 #define OPRIO_DEFAULT 0 /* a default value */
129 #define OPRIO_CFGFILE 1 /* value from a configuration file */
130 #define OPRIO_CMDLINE 2 /* value from the command line */
131 #define OPRIO_SECFILE 3 /* value from options in a secrets file */
132 #define OPRIO_ROOT 100 /* added to priority if OPT_PRIVFIX && root */
135 #define GIDSET_TYPE gid_t
138 /* Structure representing a list of permitted IP addresses. */
139 struct permitted_ip {
140 int permit; /* 1 = permit, 0 = forbid */
141 u_int32_t base; /* match if (addr & mask) == base */
142 u_int32_t mask; /* base and mask are in network byte order */
146 * Unfortunately, the linux kernel driver uses a different structure
147 * for statistics from the rest of the ports.
148 * This structure serves as a common representation for the bits
152 unsigned int bytes_in;
153 unsigned int bytes_out;
154 unsigned int pkts_in;
155 unsigned int pkts_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 auth_done[NUM_PPP]; /* Methods actually used for auth */
203 extern int privileged; /* We were run by real-uid root */
204 extern int need_holdoff; /* Need holdoff period after link terminates */
205 extern char **script_env; /* Environment variables for scripts */
206 extern int detached; /* Have detached from controlling tty */
207 extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */
208 extern int ngroups; /* How many groups valid in groups */
209 extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */
210 extern int link_stats_valid; /* set if link_stats is valid */
211 extern int link_connect_time; /* time the link was up for */
212 extern int using_pty; /* using pty as device (notty or pty opt.) */
213 extern int log_to_fd; /* logging to this fd as well as syslog */
214 extern bool log_default; /* log_to_fd is default (stdout) */
215 extern char *no_ppp_msg; /* message to print if ppp not in kernel */
216 extern volatile int status; /* exit status for pppd */
217 extern bool devnam_fixed; /* can no longer change devnam */
218 extern int unsuccess; /* # unsuccessful connection attempts */
219 extern int do_callback; /* set if we want to do callback next */
220 extern int doing_callback; /* set if this is a callback */
221 extern char ppp_devnam[MAXPATHLEN];
222 extern char remote_number[MAXNAMELEN]; /* Remote telephone number, if avail. */
223 extern int ppp_session_number; /* Session number (eg PPPoE session) */
225 extern int listen_time; /* time to listen first (ms) */
226 extern struct notifier *pidchange; /* for notifications of pid changing */
227 extern struct notifier *phasechange; /* for notifications of phase changes */
228 extern struct notifier *exitnotify; /* for notification that we're exiting */
229 extern struct notifier *sigreceived; /* notification of received signal */
230 extern struct notifier *ip_up_notifier; /* IPCP has come up */
231 extern struct notifier *ip_down_notifier; /* IPCP has gone down */
232 extern struct notifier *auth_up_notifier; /* peer has authenticated */
233 extern struct notifier *link_down_notifier; /* link has gone down */
235 /* Values for do_callback and doing_callback */
236 #define CALLBACK_DIALIN 1 /* we are expecting the call back */
237 #define CALLBACK_DIALOUT 2 /* we are dialling out to call back */
240 * Variables set by command-line options.
243 extern int debug; /* Debug flag */
244 extern int kdebugflag; /* Tell kernel to print debug messages */
245 extern int default_device; /* Using /dev/tty or equivalent */
246 extern char devnam[MAXPATHLEN]; /* Device name */
247 extern int crtscts; /* Use hardware flow control */
248 extern bool modem; /* Use modem control lines */
249 extern int inspeed; /* Input/Output speed requested */
250 extern u_int32_t netmask; /* IP netmask to set on interface */
251 extern bool lockflag; /* Create lock file to lock the serial dev */
252 extern bool nodetach; /* Don't detach from controlling tty */
253 extern bool updetach; /* Detach from controlling tty when link up */
254 extern char *initializer; /* Script to initialize physical link */
255 extern char *connect_script; /* Script to establish physical link */
256 extern char *disconnect_script; /* Script to disestablish physical link */
257 extern char *welcomer; /* Script to welcome client after connection */
258 extern char *ptycommand; /* Command to run on other side of pty */
259 extern int maxconnect; /* Maximum connect time (seconds) */
260 extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */
261 extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */
262 extern bool auth_required; /* Peer is required to authenticate */
263 extern bool persist; /* Reopen link after it goes down */
264 extern bool uselogin; /* Use /etc/passwd for checking PAP */
265 extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */
266 extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
267 extern bool explicit_remote;/* remote_name specified with remotename opt */
268 extern bool demand; /* Do dial-on-demand */
269 extern char *ipparam; /* Extra parameter for ip up/down scripts */
270 extern bool cryptpap; /* Others' PAP passwords are encrypted */
271 extern int idle_time_limit;/* Shut down link if idle for this long */
272 extern int holdoff; /* Dead time before restarting */
273 extern bool holdoff_specified; /* true if user gave a holdoff value */
274 extern bool notty; /* Stdin/out is not a tty */
275 extern char *pty_socket; /* Socket to connect to pty */
276 extern char *record_file; /* File to record chars sent/received */
277 extern bool sync_serial; /* Device is synchronous serial device */
278 extern int maxfail; /* Max # of unsuccessful connection attempts */
279 extern char linkname[MAXPATHLEN]; /* logical name for link */
280 extern bool tune_kernel; /* May alter kernel settings as necessary */
281 extern int connect_delay; /* Time to delay after connect script */
282 extern int max_data_rate; /* max bytes/sec through charshunt */
283 extern int req_unit; /* interface unit number to use */
284 extern bool multilink; /* enable multilink operation */
285 extern bool noendpoint; /* don't send or accept endpt. discrim. */
286 extern char *bundle_name; /* bundle name for multilink */
287 extern bool dump_options; /* print out option values */
288 extern bool dryrun; /* check everything, print options, exit */
291 extern struct bpf_program pass_filter; /* Filter for pkts to pass */
292 extern struct bpf_program active_filter; /* Filter for link-active pkts */
296 extern bool ms_lanman; /* Use LanMan password instead of NT */
297 /* Has meaning only with MS-CHAP challenges */
300 /* Values for auth_pending, auth_done */
301 #define PAP_WITHPEER 0x1
303 #define CHAP_WITHPEER 0x4
304 #define CHAP_PEER 0x8
305 /* Values for auth_done only */
306 #define CHAP_MD5_WITHPEER 0x10
307 #define CHAP_MD5_PEER 0x20
309 #define CHAP_MS_WITHPEER 0x40
310 #define CHAP_MS_PEER 0x80
311 #define CHAP_MS2_WITHPEER 0x100
312 #define CHAP_MS2_PEER 0x200
315 extern char *current_option; /* the name of the option being parsed */
316 extern int privileged_option; /* set iff the current option came from root */
317 extern char *option_source; /* string saying where the option came from */
318 extern int option_priority; /* priority of current options */
324 #define PHASE_INITIALIZE 1
325 #define PHASE_SERIALCONN 2
326 #define PHASE_DORMANT 3
327 #define PHASE_ESTABLISH 4
328 #define PHASE_AUTHENTICATE 5
329 #define PHASE_CALLBACK 6
330 #define PHASE_NETWORK 7
331 #define PHASE_RUNNING 8
332 #define PHASE_TERMINATE 9
333 #define PHASE_DISCONNECT 10
334 #define PHASE_HOLDOFF 11
337 * The following struct gives the addresses of procedures to call
338 * for a particular protocol.
341 u_short protocol; /* PPP protocol number */
342 /* Initialization procedure */
343 void (*init) __P((int unit));
344 /* Process a received packet */
345 void (*input) __P((int unit, u_char *pkt, int len));
346 /* Process a received protocol-reject */
347 void (*protrej) __P((int unit));
348 /* Lower layer has come up */
349 void (*lowerup) __P((int unit));
350 /* Lower layer has gone down */
351 void (*lowerdown) __P((int unit));
352 /* Open the protocol */
353 void (*open) __P((int unit));
354 /* Close the protocol */
355 void (*close) __P((int unit, char *reason));
356 /* Print a packet in readable form */
357 int (*printpkt) __P((u_char *pkt, int len,
358 void (*printer) __P((void *, char *, ...)),
360 /* Process a received data packet */
361 void (*datainput) __P((int unit, u_char *pkt, int len));
362 bool enabled_flag; /* 0 iff protocol is disabled */
363 char *name; /* Text name of protocol */
364 char *data_name; /* Text name of corresponding data protocol */
365 option_t *options; /* List of command-line options */
366 /* Check requested options, assign defaults */
367 void (*check_options) __P((void));
368 /* Configure interface for demand-dial */
369 int (*demand_conf) __P((int unit));
370 /* Say whether to bring up link for this pkt */
371 int (*active_pkt) __P((u_char *pkt, int len));
374 /* Table of pointers to supported protocols */
375 extern struct protent *protocols[];
378 * This struct contains pointers to a set of procedures for
379 * doing operations on a "channel". A channel provides a way
380 * to send and receive PPP packets - the canonical example is
381 * a serial port device in PPP line discipline (or equivalently
382 * with PPP STREAMS modules pushed onto it).
385 /* set of options for this channel */
387 /* find and process a per-channel options file */
388 void (*process_extra_options) __P((void));
389 /* check all the options that have been given */
390 void (*check_options) __P((void));
391 /* get the channel ready to do PPP, return a file descriptor */
392 int (*connect) __P((void));
393 /* we're finished with the channel */
394 void (*disconnect) __P((void));
395 /* put the channel into PPP `mode' */
396 int (*establish_ppp) __P((int));
397 /* take the channel out of PPP `mode', restore loopback if demand */
398 void (*disestablish_ppp) __P((int));
399 /* set the transmit-side PPP parameters of the channel */
400 void (*send_config) __P((int, u_int32_t, int, int));
401 /* set the receive-side PPP parameters of the channel */
402 void (*recv_config) __P((int, u_int32_t, int, int));
403 /* cleanup on error or normal exit */
404 void (*cleanup) __P((void));
405 /* close the device, called in children after fork */
406 void (*close) __P((void));
409 extern struct channel *the_channel;
411 #define ppp_send_config(unit, mtu, accm, pc, acc) \
413 if (the_channel->send_config) \
414 (*the_channel->send_config)((mtu), (accm), (pc), (acc)); \
417 #define ppp_recv_config(unit, mtu, accm, pc, acc) \
419 if (the_channel->send_config) \
420 (*the_channel->recv_config)((mtu), (accm), (pc), (acc)); \
427 /* Procedures exported from main.c. */
428 void set_ifunit __P((int)); /* set stuff that depends on ifunit */
429 void detach __P((void)); /* Detach from controlling tty */
430 void die __P((int)); /* Cleanup and exit */
431 void quit __P((void)); /* like die(1) */
432 void novm __P((char *)); /* Say we ran out of memory, and die */
433 void timeout __P((void (*func)(void *), void *arg, int s, int us));
434 /* Call func(arg) after s.us seconds */
435 void untimeout __P((void (*func)(void *), void *arg));
436 /* Cancel call to func(arg) */
437 void record_child __P((int, char *, void (*) (void *), void *));
438 int device_script __P((char *cmd, int in, int out, int dont_wait));
439 /* Run `cmd' with given stdin and stdout */
440 pid_t run_program __P((char *prog, char **args, int must_exist,
441 void (*done)(void *), void *arg));
442 /* Run program prog with args in child */
443 void reopen_log __P((void)); /* (re)open the connection to syslog */
444 void update_link_stats __P((int)); /* Get stats at link termination */
445 void script_setenv __P((char *, char *, int)); /* set script env var */
446 void script_unsetenv __P((char *)); /* unset script env var */
447 void new_phase __P((int)); /* signal start of new phase */
448 void add_notifier __P((struct notifier **, notify_func, void *));
449 void remove_notifier __P((struct notifier **, notify_func, void *));
450 void notify __P((struct notifier *, int));
452 /* Procedures exported from tty.c. */
453 void tty_init __P((void));
455 /* Procedures exported from utils.c. */
456 void log_packet __P((u_char *, int, char *, int));
457 /* Format a packet and log it with syslog */
458 void print_string __P((char *, int, void (*) (void *, char *, ...),
459 void *)); /* Format a string for output */
460 int slprintf __P((char *, int, char *, ...)); /* sprintf++ */
461 int vslprintf __P((char *, int, char *, va_list)); /* vsprintf++ */
462 size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */
463 size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */
464 void dbglog __P((char *, ...)); /* log a debug message */
465 void info __P((char *, ...)); /* log an informational message */
466 void notice __P((char *, ...)); /* log a notice-level message */
467 void warn __P((char *, ...)); /* log a warning message */
468 void error __P((char *, ...)); /* log an error message */
469 void fatal __P((char *, ...)); /* log an error message and die(1) */
470 void init_pr_log __P((char *, int)); /* initialize for using pr_log */
471 void pr_log __P((void *, char *, ...)); /* printer fn, output to syslog */
472 void end_pr_log __P((void)); /* finish up after using pr_log */
473 void dump_packet __P((const char *, u_char *, int));
474 /* dump packet to debug log if interesting */
476 /* Procedures exported from auth.c */
477 void link_required __P((int)); /* we are starting to use the link */
478 void link_terminated __P((int)); /* we are finished with the link */
479 void link_down __P((int)); /* the LCP layer has left the Opened state */
480 void link_established __P((int)); /* the link is up; authenticate now */
481 void start_networks __P((void)); /* start all the network control protos */
482 void np_up __P((int, int)); /* a network protocol has come up */
483 void np_down __P((int, int)); /* a network protocol has gone down */
484 void np_finished __P((int, int)); /* a network protocol no longer needs link */
485 void auth_peer_fail __P((int, int));
486 /* peer failed to authenticate itself */
487 void auth_peer_success __P((int, int, int, char *, int));
488 /* peer successfully authenticated itself */
489 void auth_withpeer_fail __P((int, int));
490 /* we failed to authenticate ourselves */
491 void auth_withpeer_success __P((int, int, int));
492 /* we successfully authenticated ourselves */
493 void auth_check_options __P((void));
494 /* check authentication options supplied */
495 void auth_reset __P((int)); /* check what secrets we have */
496 int check_passwd __P((int, char *, int, char *, int, char **));
497 /* Check peer-supplied username/password */
498 int get_secret __P((int, char *, char *, char *, int *, int));
499 /* get "secret" for chap */
500 int auth_ip_addr __P((int, u_int32_t));
501 /* check if IP address is authorized */
502 int bad_ip_adrs __P((u_int32_t));
503 /* check if IP address is unreasonable */
505 /* Procedures exported from demand.c */
506 void demand_conf __P((void)); /* config interface(s) for demand-dial */
507 void demand_block __P((void)); /* set all NPs to queue up packets */
508 void demand_unblock __P((void)); /* set all NPs to pass packets */
509 void demand_discard __P((void)); /* set all NPs to discard packets */
510 void demand_rexmit __P((int)); /* retransmit saved frames for an NP */
511 int loop_chars __P((unsigned char *, int)); /* process chars from loopback */
512 int loop_frame __P((unsigned char *, int)); /* should we bring link up? */
514 /* Procedures exported from multilink.c */
515 void mp_check_options __P((void)); /* Check multilink-related options */
516 int mp_join_bundle __P((void)); /* join our link to an appropriate bundle */
517 char *epdisc_to_str __P((struct epdisc *)); /* string from endpoint discrim. */
518 int str_to_epdisc __P((struct epdisc *, char *)); /* endpt disc. from str */
520 /* Procedures exported from sys-*.c */
521 void sys_init __P((void)); /* Do system-dependent initialization */
522 void sys_cleanup __P((void)); /* Restore system state before exiting */
523 int sys_check_options __P((void)); /* Check options specified */
524 void sys_close __P((void)); /* Clean up in a child before execing */
525 int ppp_available __P((void)); /* Test whether ppp kernel support exists */
526 int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */
527 int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */
528 int tty_establish_ppp __P((int)); /* Turn serial port into a ppp interface */
529 void tty_disestablish_ppp __P((int)); /* Restore port to normal operation */
530 void generic_disestablish_ppp __P((int dev_fd)); /* Restore device setting */
531 int generic_establish_ppp __P((int dev_fd)); /* Make a ppp interface */
532 void make_new_bundle __P((int, int, int, int)); /* Create new bundle */
533 int bundle_attach __P((int)); /* Attach link to existing bundle */
534 void cfg_bundle __P((int, int, int, int)); /* Configure existing bundle */
535 void clean_check __P((void)); /* Check if line was 8-bit clean */
536 void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */
537 void restore_tty __P((int)); /* Restore port's original parameters */
538 void setdtr __P((int, int)); /* Raise or lower port's DTR line */
539 void output __P((int, u_char *, int)); /* Output a PPP packet */
540 void wait_input __P((struct timeval *));
541 /* Wait for input, with timeout */
542 void add_fd __P((int)); /* Add fd to set to wait for */
543 void remove_fd __P((int)); /* Remove fd from set to wait for */
544 int read_packet __P((u_char *)); /* Read PPP packet */
545 int get_loop_output __P((void)); /* Read pkts from loopback */
546 void tty_send_config __P((int, u_int32_t, int, int));
547 /* Configure i/f transmit parameters */
548 void tty_set_xaccm __P((ext_accm));
549 /* Set extended transmit ACCM */
550 void tty_recv_config __P((int, u_int32_t, int, int));
551 /* Configure i/f receive parameters */
552 int ccp_test __P((int, u_char *, int, int));
553 /* Test support for compression scheme */
554 void ccp_flags_set __P((int, int, int));
555 /* Set kernel CCP state */
556 int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */
557 int get_idle_time __P((int, struct ppp_idle *));
558 /* Find out how long link has been idle */
559 int get_ppp_stats __P((int, struct pppd_stats *));
560 /* Return link statistics */
561 void netif_set_mtu __P((int, int)); /* Set PPP interface MTU */
562 int netif_get_mtu __P((int)); /* Get PPP interface MTU */
563 int sifvjcomp __P((int, int, int, int));
564 /* Configure VJ TCP header compression */
565 int sifup __P((int)); /* Configure i/f up for one protocol */
566 int sifnpmode __P((int u, int proto, enum NPmode mode));
567 /* Set mode for handling packets for proto */
568 int sifdown __P((int)); /* Configure i/f down for one protocol */
569 int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t));
570 /* Configure IPv4 addresses for i/f */
571 int cifaddr __P((int, u_int32_t, u_int32_t));
572 /* Reset i/f IP addresses */
574 int sif6addr __P((int, eui64_t, eui64_t));
575 /* Configure IPv6 addresses for i/f */
576 int cif6addr __P((int, eui64_t, eui64_t));
577 /* Remove an IPv6 address from i/f */
579 int sifdefaultroute __P((int, u_int32_t, u_int32_t));
580 /* Create default route through i/f */
581 int cifdefaultroute __P((int, u_int32_t, u_int32_t));
582 /* Delete default route through i/f */
583 int sifproxyarp __P((int, u_int32_t));
584 /* Add proxy ARP entry for peer */
585 int cifproxyarp __P((int, u_int32_t));
586 /* Delete proxy ARP entry for peer */
587 u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */
588 int lock __P((char *)); /* Create lock file for device */
589 int relock __P((int)); /* Rewrite lock file with new pid */
590 void unlock __P((void)); /* Delete previously-created lock file */
591 void logwtmp __P((const char *, const char *, const char *));
592 /* Write entry to wtmp file */
593 int get_host_seed __P((void)); /* Get host-dependent random number seed */
594 int have_route_to __P((u_int32_t)); /* Check if route to addr exists */
596 int set_filters __P((struct bpf_program *pass, struct bpf_program *active));
597 /* Set filter programs in kernel */
600 int sipxfaddr __P((int, unsigned long, unsigned char *));
601 int cipxfaddr __P((int));
603 int get_if_hwaddr __P((u_char *addr, char *name));
604 char *get_first_ethernet __P((void));
606 /* Procedures exported from options.c */
607 int setipaddr __P((char *, char **, int)); /* Set local/remote ip addresses */
608 int parse_args __P((int argc, char **argv));
609 /* Parse options from arguments given */
610 int options_from_file __P((char *filename, int must_exist, int check_prot,
612 /* Parse options from an options file */
613 int options_from_user __P((void)); /* Parse options from user's .ppprc */
614 int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */
615 int options_from_list __P((struct wordlist *, int privileged));
616 /* Parse options from a wordlist */
617 int getword __P((FILE *f, char *word, int *newlinep, char *filename));
618 /* Read a word from a file */
619 void option_error __P((char *fmt, ...));
620 /* Print an error message about an option */
621 int int_option __P((char *, int *));
622 /* Simplified number_option for decimal ints */
623 void add_options __P((option_t *)); /* Add extra options */
624 void check_options __P((void)); /* check values after all options parsed */
625 int override_value __P((const char *, int, const char *));
626 /* override value if permitted by priority */
627 void print_options __P((void (*) __P((void *, char *, ...)), void *));
628 /* print out values of all options */
630 int parse_dotted_ip __P((char *, u_int32_t *));
633 * Hooks to enable plugins to change various things.
635 extern int (*new_phase_hook) __P((int));
636 extern int (*idle_time_hook) __P((struct ppp_idle *));
637 extern int (*holdoff_hook) __P((void));
638 extern int (*pap_check_hook) __P((void));
639 extern int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp,
640 struct wordlist **paddrs,
641 struct wordlist **popts));
642 extern void (*pap_logout_hook) __P((void));
643 extern int (*pap_passwd_hook) __P((char *user, char *passwd));
644 extern int (*allowed_address_hook) __P((u_int32_t addr));
645 extern void (*ip_up_hook) __P((void));
646 extern void (*ip_down_hook) __P((void));
647 extern void (*ip_choose_hook) __P((u_int32_t *));
649 extern int (*chap_check_hook) __P((void));
650 extern int (*chap_passwd_hook) __P((char *user, char *passwd));
652 /* Let a plugin snoop sent and received packets. Useful for L2TP */
653 extern void (*snoop_recv_hook) __P((unsigned char *p, int len));
654 extern void (*snoop_send_hook) __P((unsigned char *p, int len));
657 * Inline versions of get/put char/short/long.
658 * Pointer is advanced; we assume that both arguments
659 * are lvalues and will already be in registers.
660 * cp MUST be u_char *.
662 #define GETCHAR(c, cp) { \
665 #define PUTCHAR(c, cp) { \
666 *(cp)++ = (u_char) (c); \
670 #define GETSHORT(s, cp) { \
671 (s) = *(cp)++ << 8; \
674 #define PUTSHORT(s, cp) { \
675 *(cp)++ = (u_char) ((s) >> 8); \
676 *(cp)++ = (u_char) (s); \
679 #define GETLONG(l, cp) { \
680 (l) = *(cp)++ << 8; \
681 (l) |= *(cp)++; (l) <<= 8; \
682 (l) |= *(cp)++; (l) <<= 8; \
685 #define PUTLONG(l, cp) { \
686 *(cp)++ = (u_char) ((l) >> 24); \
687 *(cp)++ = (u_char) ((l) >> 16); \
688 *(cp)++ = (u_char) ((l) >> 8); \
689 *(cp)++ = (u_char) (l); \
692 #define INCPTR(n, cp) ((cp) += (n))
693 #define DECPTR(n, cp) ((cp) -= (n))
696 * System dependent definitions for user-level 4.3BSD UNIX implementation.
699 #define TIMEOUT(r, f, t) timeout((r), (f), (t), 0)
700 #define UNTIMEOUT(r, f) untimeout((r), (f))
702 #define BCOPY(s, d, l) memcpy(d, s, l)
703 #define BZERO(s, n) memset(s, 0, n)
705 #define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); }
708 * MAKEHEADER - Add Header fields to a packet.
710 #define MAKEHEADER(p, t) { \
711 PUTCHAR(PPP_ALLSTATIONS, p); \
712 PUTCHAR(PPP_UI, p); \
716 * Exit status values.
719 #define EXIT_FATAL_ERROR 1
720 #define EXIT_OPTION_ERROR 2
721 #define EXIT_NOT_ROOT 3
722 #define EXIT_NO_KERNEL_SUPPORT 4
723 #define EXIT_USER_REQUEST 5
724 #define EXIT_LOCK_FAILED 6
725 #define EXIT_OPEN_FAILED 7
726 #define EXIT_CONNECT_FAILED 8
727 #define EXIT_PTYCMD_FAILED 9
728 #define EXIT_NEGOTIATION_FAILED 10
729 #define EXIT_PEER_AUTH_FAILED 11
730 #define EXIT_IDLE_TIMEOUT 12
731 #define EXIT_CONNECT_TIME 13
732 #define EXIT_CALLBACK 14
733 #define EXIT_PEER_DEAD 15
734 #define EXIT_HANGUP 16
735 #define EXIT_LOOPBACK 17
736 #define EXIT_INIT_FAILED 18
737 #define EXIT_AUTH_TOPEER_FAILED 19
740 * Debug macros. Slightly useful for finding bugs in pppd, not particularly
741 * useful for finding out why your connection isn't being established.
748 #define DEBUGIPV6CP 1
753 #ifndef LOG_PPP /* we use LOG_LOCAL2 for syslog by default */
754 #if defined(DEBUGMAIN) || defined(DEBUGFSM) || defined(DEBUGSYS) \
755 || defined(DEBUGLCP) || defined(DEBUGIPCP) || defined(DEBUGUPAP) \
756 || defined(DEBUGCHAP) || defined(DEBUG) || defined(DEBUGIPV6CP)
757 #define LOG_PPP LOG_LOCAL2
759 #define LOG_PPP LOG_DAEMON
764 #define MAINDEBUG(x) if (debug) dbglog x
770 #define SYSDEBUG(x) if (debug) dbglog x
776 #define FSMDEBUG(x) if (debug) dbglog x
782 #define LCPDEBUG(x) if (debug) dbglog x
788 #define IPCPDEBUG(x) if (debug) dbglog x
794 #define IPV6CPDEBUG(x) if (debug) dbglog x
796 #define IPV6CPDEBUG(x)
800 #define UPAPDEBUG(x) if (debug) dbglog x
806 #define CHAPDEBUG(x) if (debug) dbglog x
812 #define IPXCPDEBUG(x) if (debug) dbglog x
814 #define IPXCPDEBUG(x)
818 #if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE)
822 #endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */
826 #define MIN(a, b) ((a) < (b)? (a): (b))
829 #define MAX(a, b) ((a) > (b)? (a): (b))
833 #define offsetof(type, member) ((size_t) &((type *)0)->member)
836 #endif /* __PPP_H__ */