source: rtems/cpukit/pppd/pppd.h @ 58ce601

4.104.114.84.9
Last change on this file since 58ce601 was 48cdb95a, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 10, 2003 at 4:20:38 PM

2003-04-10 Joel Sherrill <joel@…>

PR 371/pppd

  • pppd/auth.c, pppd/chat.c, pppd/demand.c, pppd/fsm.c, pppd/lcp.c, pppd/options.c, pppd/pppd.h, pppd/rtemsmain.c, pppd/rtemspppd.c: Change many symbols to static. There are still global symbols in rtemspppd.h which might need to be changed or converted into member of a structure which is dereferenced with a pointer that is managed as a per task variable. But this patch should avoid many conflicts.
  • Property mode set to 100644
File size: 23.6 KB
Line 
1/*
2 * pppd.h - PPP daemon global declarations.
3 *
4 * Copyright (c) 1989 Carnegie Mellon University.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms are permitted
8 * provided that the above copyright notice and this paragraph are
9 * duplicated in all such forms and that any documentation,
10 * advertising materials, and other materials related to such
11 * distribution and use acknowledge that the software was developed
12 * by Carnegie Mellon University.  The name of the
13 * University may not be used to endorse or promote products derived
14 * from this software without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
17 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18 *
19 * $Id$
20 */
21
22#ifndef __PPPD_H__
23#define __PPPD_H__
24
25#include <stdio.h>              /* for FILE */
26#include <limits.h>             /* for NGROUPS_MAX */
27#include <sys/param.h>          /* for MAXPATHLEN and BSD4_4, if defined */
28#include <sys/types.h>          /* for u_int32_t, if defined */
29#include <sys/time.h>           /* for struct timeval */
30#include <net/ppp_defs.h>
31#include "rtemsdialer.h"
32
33#if defined(__STDC__)
34#include <stdarg.h>
35#define __V(x)  x
36#else
37#include <varargs.h>
38#define __V(x)  (va_alist) va_dcl
39#define const
40#define volatile
41#endif
42
43#ifdef INET6
44#include "eui64.h"
45#endif
46
47/*
48 * Limits.
49 */
50
51#define NUM_PPP         1       /* One PPP interface supported (per process) */
52#define MAXWORDLEN      1024    /* max length of word in file (incl null) */
53#define MAXARGS         1       /* max # args to a command */
54#define MAXNAMELEN      256     /* max length of hostname or name for auth */
55#define MAXSECRETLEN    256     /* max length of password or secret */
56
57/*
58 * Option descriptor structure.
59 */
60
61typedef unsigned char   bool;
62
63enum opt_type {
64        o_special_noarg = 0,
65        o_special = 1,
66        o_bool,
67        o_int,
68        o_uint32,
69        o_string,
70};
71
72typedef struct {
73        char    *name;          /* name of the option */
74        enum opt_type type;
75        void    *addr;
76        char    *description;
77        int     flags;
78        void    *addr2;
79        int     upper_limit;
80        int     lower_limit;
81} option_t;
82
83/* Values for flags */
84#define OPT_VALUE       0xff    /* mask for presupplied value */
85#define OPT_HEX         0x100   /* int option is in hex */
86#define OPT_NOARG       0x200   /* option doesn't take argument */
87#define OPT_OR          0x400   /* OR in argument to value */
88#define OPT_INC         0x800   /* increment value */
89#define OPT_PRIV        0x1000  /* privileged option */
90#define OPT_STATIC      0x2000  /* string option goes into static array */
91#define OPT_LLIMIT      0x4000  /* check value against lower limit */
92#define OPT_ULIMIT      0x8000  /* check value against upper limit */
93#define OPT_LIMITS      (OPT_LLIMIT|OPT_ULIMIT)
94#define OPT_ZEROOK      0x10000 /* 0 value is OK even if not within limits */
95#define OPT_NOINCR      0x20000 /* value mustn't be increased */
96#define OPT_ZEROINF     0x40000 /* with OPT_NOINCR, 0 == infinity */
97#define OPT_A2INFO      0x100000 /* addr2 -> option_info to update */
98#define OPT_A2COPY      0x200000 /* addr2 -> second location to rcv value */
99#define OPT_ENABLE      0x400000 /* use *addr2 as enable for option */
100#define OPT_PRIVFIX     0x800000 /* can't be overridden if noauth */
101#define OPT_PREPASS     0x1000000 /* do this opt in pre-pass to find device */
102#define OPT_INITONLY    0x2000000 /* option can only be set in init phase */
103#define OPT_DEVEQUIV    0x4000000 /* equiv to device name */
104#define OPT_DEVNAM      (OPT_PREPASS | OPT_INITONLY | OPT_DEVEQUIV)
105
106#define OPT_VAL(x)      ((x) & OPT_VALUE)
107
108#ifndef GIDSET_TYPE
109#define GIDSET_TYPE     gid_t
110#endif
111
112/* Structure representing a list of permitted IP addresses. */
113struct permitted_ip {
114    int         permit;         /* 1 = permit, 0 = forbid */
115    u_int32_t   base;           /* match if (addr & mask) == base */
116    u_int32_t   mask;           /* base and mask are in network byte order */
117};
118
119/*
120 * Unfortunately, the linux kernel driver uses a different structure
121 * for statistics from the rest of the ports.
122 * This structure serves as a common representation for the bits
123 * pppd needs.
124 */
125struct pppd_stats {
126    unsigned int        bytes_in;
127    unsigned int        bytes_out;
128};
129
130/* Used for storing a sequence of words.  Usually malloced. */
131struct wordlist {
132    struct wordlist     *next;
133    char                *word;
134};
135
136/*
137 * Global variables.
138 */
139
140extern int      pppd_kill_link; /* Signal to terminate processing loop */
141extern int      hungup;         /* Physical layer has disconnected */
142extern int      pppifunit;      /* Interface unit number */
143extern char     ifname[];       /* Interface name */
144extern int      ttyfd;          /* Serial device file descriptor */
145extern char     hostname[];     /* Our hostname */
146extern u_char   outpacket_buf[]; /* Buffer for outgoing packets */
147extern int      pppd_phase;             /* Current state of link - see values below */
148extern int      baud_rate;      /* Current link speed in bits/sec */
149extern int      redirect_stderr;/* Connector's stderr should go to file */
150extern char     peer_authname[];/* Authenticated name of peer */
151extern int      privileged;     /* We were run by real-uid root */
152extern int      need_holdoff;   /* Need holdoff period after link terminates */
153extern char     **script_env;   /* Environment variables for scripts */
154extern int      detached;       /* Have detached from controlling tty */
155extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */
156extern int      ngroups;        /* How many groups valid in groups */
157extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */
158extern int      using_pty;      /* using pty as device (notty or pty opt.) */
159extern int      log_to_fd;      /* logging to this fd as well as syslog */
160extern char     *no_ppp_msg;    /* message to print if ppp not in kernel */
161extern volatile int pppd_status;        /* exit status for pppd */
162extern int      devnam_fixed;   /* can no longer change devnam */
163extern int      unsuccess;      /* # unsuccessful connection attempts */
164extern int      do_callback;    /* set if we want to do callback next */
165extern int      doing_callback; /* set if this is a callback */
166extern dialerfp pppd_dialer;    /* script dialer function callback */
167
168/* Values for do_callback and doing_callback */
169#define CALLBACK_DIALIN         1       /* we are expecting the call back */
170#define CALLBACK_DIALOUT        2       /* we are dialling out to call back */
171
172/*
173 * Variables set by command-line options.
174 */
175
176extern int      debug;          /* Debug flag */
177extern int      kdebugflag;     /* Tell kernel to print debug messages */
178extern int      default_device; /* Using /dev/tty or equivalent */
179extern char     devnam[MAXPATHLEN];     /* Device name */
180extern int      crtscts;        /* Use hardware flow control */
181extern bool     modem;          /* Use modem control lines */
182extern int      inspeed;        /* Input/Output speed requested */
183extern u_int32_t netmask;       /* IP netmask to set on interface */
184extern bool     lockflag;       /* Create lock file to lock the serial dev */
185extern bool     nodetach;       /* Don't detach from controlling tty */
186extern bool     updetach;       /* Detach from controlling tty when link up */
187extern char     *initializer;   /* Script to initialize physical link */
188extern char     *connect_script; /* Script to establish physical link */
189extern char     *disconnect_script; /* Script to disestablish physical link */
190extern char     *welcomer;      /* Script to welcome client after connection */
191extern char     *ptycommand;    /* Command to run on other side of pty */
192extern int      maxconnect;     /* Maximum connect time (seconds) */
193extern char     user[MAXNAMELEN];/* Our name for authenticating ourselves */
194extern char     passwd[MAXSECRETLEN];   /* Password for PAP or CHAP */
195extern bool     auth_required;  /* Peer is required to authenticate */
196extern bool     persist;        /* Reopen link after it goes down */
197extern bool     uselogin;       /* Use /etc/passwd for checking PAP */
198extern char     our_name[MAXNAMELEN];/* Our name for authentication purposes */
199extern char     remote_name[MAXNAMELEN]; /* Peer's name for authentication */
200extern bool     explicit_remote;/* remote_name specified with remotename opt */
201extern bool     demand;         /* Do dial-on-demand */
202extern char     *ipparam;       /* Extra parameter for ip up/down scripts */
203extern bool     cryptpap;       /* Others' PAP passwords are encrypted */
204extern int      idle_time_limit;/* Shut down link if idle for this long */
205extern int      holdoff;        /* Dead time before restarting */
206extern bool     holdoff_specified; /* true if user gave a holdoff value */
207extern bool     notty;          /* Stdin/out is not a tty */
208extern char     *record_file;   /* File to record chars sent/received */
209extern bool     sync_serial;    /* Device is synchronous serial device */
210extern int      maxfail;        /* Max # of unsuccessful connection attempts */
211extern char     linkname[MAXPATHLEN]; /* logical name for link */
212extern bool     tune_kernel;    /* May alter kernel settings as necessary */
213extern int      connect_delay;  /* Time to delay after connect script */
214
215#ifdef PPP_FILTER
216extern struct   bpf_program pass_filter;   /* Filter for pkts to pass */
217extern struct   bpf_program active_filter; /* Filter for link-active pkts */
218#endif
219
220#ifdef MSLANMAN
221extern bool     ms_lanman;      /* Use LanMan password instead of NT */
222                                /* Has meaning only with MS-CHAP challenges */
223#endif
224
225extern char *current_option;    /* the name of the option being parsed */
226extern int  privileged_option;  /* set iff the current option came from root */
227extern char *option_source;     /* string saying where the option came from */
228
229/*
230 * Values for phase.
231 */
232#define PHASE_DEAD              0
233#define PHASE_INITIALIZE        1
234#define PHASE_SERIALCONN        2
235#define PHASE_DORMANT           3
236#define PHASE_ESTABLISH         4
237#define PHASE_AUTHENTICATE      5
238#define PHASE_CALLBACK          6
239#define PHASE_NETWORK           7
240#define PHASE_RUNNING           8
241#define PHASE_TERMINATE         9
242#define PHASE_DISCONNECT        10
243#define PHASE_HOLDOFF           11
244
245/*
246 * The following struct gives the addresses of procedures to call
247 * for a particular protocol.
248 */
249struct protent {
250    u_short protocol;           /* PPP protocol number */
251    /* Initialization procedure */
252    void (*init) __P((int unit));
253    /* Process a received packet */
254    void (*input) __P((int unit, u_char *pkt, int len));
255    /* Process a received protocol-reject */
256    void (*protrej) __P((int unit));
257    /* Lower layer has come up */
258    void (*lowerup) __P((int unit));
259    /* Lower layer has gone down */
260    void (*lowerdown) __P((int unit));
261    /* Open the protocol */
262    void (*open) __P((int unit));
263    /* Close the protocol */
264    void (*close) __P((int unit, char *reason));
265    /* Print a packet in readable form */
266    int  (*printpkt) __P((u_char *pkt, int len,
267                          void (*printer) __P((void *, char *, ...)),
268                          void *arg));
269    /* Process a received data packet */
270    void (*datainput) __P((int unit, u_char *pkt, int len));
271    bool enabled_flag;          /* 0 iff protocol is disabled */
272    char *name;                 /* Text name of protocol */
273    char *data_name;            /* Text name of corresponding data protocol */
274    option_t *options;          /* List of command-line options */
275    /* Check requested options, assign defaults */
276    void (*check_options) __P((void));
277    /* Configure interface for demand-dial */
278    int  (*demand_conf) __P((int unit));
279    /* Say whether to bring up link for this pkt */
280    int  (*active_pkt) __P((u_char *pkt, int len));
281};
282
283/* Table of pointers to supported protocols */
284extern struct protent *protocols[];
285
286/*
287 * Prototypes.
288 */
289
290/* Procedures exported from main.c. */
291void die __P((int));            /* Cleanup and exit */
292void quit __P((void));          /* like die(1) */
293void novm __P((char *));        /* Say we ran out of memory, and die */
294void ppptimeout __P((void (*func)(void *), void *arg, int t));
295                                /* Call func(arg) after t seconds */
296void untimeout __P((void (*func)(void *), void *arg));
297                                /* Cancel call to func(arg) */
298void update_link_stats __P((int)); /* Get stats at link termination */
299void new_phase __P((int));      /* signal start of new phase */
300
301/* Procedures exported from utils.c. */
302void log_packet __P((u_char *, int, char *, int));
303                                /* Format a packet and log it with syslog */
304void print_string __P((char *, int,  void (*) (void *, char *, ...),
305                void *));       /* Format a string for output */
306int slprintf __P((char *, int, char *, ...));           /* sprintf++ */
307int vslprintf __P((char *, int, char *, va_list));      /* vsprintf++ */
308size_t strlcpy __P((char *, const char *, size_t));     /* safe strcpy */
309size_t strlcat __P((char *, const char *, size_t));     /* safe strncpy */
310void pppd_dbglog __P((char *, ...));    /* log a debug message */
311void pppd_info __P((char *, ...));      /* log an informational message */
312void pppd_notice __P((char *, ...));    /* log a notice-level message */
313void pppd_warn __P((char *, ...));      /* log a warning message */
314void pppd_error __P((char *, ...));     /* log an error message */
315void pppd_fatal __P((char *, ...));     /* log an error message and die(1) */
316
317#define dbglog pppd_dbglog
318#define info   pppd_info
319#define notice pppd_notice
320#define warn   pppd_warn
321#define error  pppd_error
322#define fatal  pppd_fatal
323
324/* Procedures exported from auth.c */
325void link_required __P((int));    /* we are starting to use the link */
326void link_terminated __P((int));  /* we are finished with the link */
327void link_down __P((int));        /* the LCP layer has left the Opened state */
328void link_established __P((int)); /* the link is up; authenticate now */
329void start_networks __P((void));  /* start all the network control protos */
330void np_up __P((int, int));       /* a network protocol has come up */
331void np_down __P((int, int));     /* a network protocol has gone down */
332void np_finished __P((int, int)); /* a network protocol no longer needs link */
333void auth_peer_fail __P((int, int));
334                                /* peer failed to authenticate itself */
335void auth_peer_success __P((int, int, char *, int));
336                                /* peer successfully authenticated itself */
337void auth_withpeer_fail __P((int, int));
338                                /* we failed to authenticate ourselves */
339void auth_withpeer_success __P((int, int));
340                                /* we successfully authenticated ourselves */
341int  auth_check_options __P((void));
342                                /* check authentication options supplied */
343void auth_reset __P((int));     /* check what secrets we have */
344int  check_passwd __P((int, char *, int, char *, int, char **));
345                                /* Check peer-supplied username/password */
346int  get_secret __P((int, char *, char *, char *, int *, int));
347                                /* get "secret" for chap */
348int  auth_ip_addr __P((int, u_int32_t));
349                                /* check if IP address is authorized */
350int  bad_ip_adrs __P((u_int32_t));
351                                /* check if IP address is unreasonable */
352
353/* Procedures exported from demand.c */
354void demand_conf __P((void));   /* config interface(s) for demand-dial */
355void demand_block __P((void));  /* set all NPs to queue up packets */
356void demand_unblock __P((void)); /* set all NPs to pass packets */
357void demand_discard __P((void)); /* set all NPs to discard packets */
358void demand_rexmit __P((int));  /* retransmit saved frames for an NP */
359int  loop_chars __P((unsigned char *, int)); /* process chars from loopback */
360int  loop_frame __P((unsigned char *, int)); /* should we bring link up? */
361
362/* Procedures exported from sys-*.c */
363void sys_init __P((void));      /* Do system-dependent initialization */
364void sys_cleanup __P((void));   /* Restore system state before exiting */
365int  sys_check_options __P((void)); /* Check options specified */
366void sys_close __P((void));     /* Clean up in a child before execing */
367int  ppp_available __P((void)); /* Test whether ppp kernel support exists */
368int  get_pty __P((int *, int *, char *, int));  /* Get pty master/slave */
369int  open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */
370int  establish_ppp __P((int));  /* Turn serial port into a ppp interface */
371void restore_loop __P((void));  /* Transfer ppp unit back to loopback */
372void disestablish_ppp __P((int)); /* Restore port to normal operation */
373void clean_check __P((void));   /* Check if line was 8-bit clean */
374void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */
375void restore_tty __P((int));    /* Restore port's original parameters */
376void setdtr __P((int, int));    /* Raise or lower port's DTR line */
377void output __P((int, u_char *, int)); /* Output a PPP packet */
378void wait_input __P((struct timeval *)); /* Wait for input, with timeout */
379
380void ppp_delay __P((void));       /* delay task for a little while */
381int  read_packet __P((u_char *)); /* Read PPP packet */
382int  get_loop_output __P((void)); /* Read pkts from loopback */
383void ppp_send_config __P((int, int, u_int32_t, int, int));
384                                /* Configure i/f transmit parameters */
385void ppp_set_xaccm __P((int, ext_accm));
386                                /* Set extended transmit ACCM */
387void ppp_recv_config __P((int, int, u_int32_t, int, int));
388                                /* Configure i/f receive parameters */
389int  ccp_test __P((int, u_char *, int, int));
390                                /* Test support for compression scheme */
391void ccp_flags_set __P((int, int, int));
392                                /* Set kernel CCP state */
393int  ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */
394int  get_idle_time __P((int, struct ppp_idle *));
395                                /* Find out how long link has been idle */
396int  get_ppp_stats __P((int, struct pppd_stats *));
397                                /* Return link statistics */
398int  sifvjcomp __P((int, int, int, int));
399                                /* Configure VJ TCP header compression */
400int  sifup __P((int));          /* Configure i/f up for one protocol */
401int  sifnpmode __P((int u, int proto, enum NPmode mode));
402                                /* Set mode for handling packets for proto */
403int  sifdown __P((int));        /* Configure i/f down for one protocol */
404int  sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t));
405                                /* Configure IPv4 addresses for i/f */
406int  cifaddr __P((int, u_int32_t, u_int32_t));
407                                /* Reset i/f IP addresses */
408#ifdef INET6
409int  sif6addr __P((int, eui64_t, eui64_t));
410                                /* Configure IPv6 addresses for i/f */
411int  cif6addr __P((int, eui64_t, eui64_t));
412                                /* Remove an IPv6 address from i/f */
413#endif
414int  sifdefaultroute __P((int, u_int32_t, u_int32_t));
415                                /* Create default route through i/f */
416int  cifdefaultroute __P((int, u_int32_t, u_int32_t));
417                                /* Delete default route through i/f */
418int  sifproxyarp __P((int, u_int32_t));
419                                /* Add proxy ARP entry for peer */
420int  cifproxyarp __P((int, u_int32_t));
421                                /* Delete proxy ARP entry for peer */
422u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */
423int  lock __P((char *));        /* Create lock file for device */
424int  relock __P((int));         /* Rewrite lock file with new pid */
425void unlock __P((void));        /* Delete previously-created lock file */
426void logwtmp __P((const char *, const char *, const char *));
427                                /* Write entry to wtmp file */
428int  get_host_seed __P((void)); /* Get host-dependent random number seed */
429int  have_route_to __P((u_int32_t)); /* Check if route to addr exists */
430#ifdef PPP_FILTER
431int  set_filters __P((struct bpf_program *pass, struct bpf_program *active));
432                                /* Set filter programs in kernel */
433#endif
434#ifdef IPX_CHANGE
435int  sipxfaddr __P((int, unsigned long, unsigned char *));
436int  cipxfaddr __P((int));
437#endif
438
439/* Procedures exported from options.c */
440int  parse_args __P((int argc, char **argv));
441                                /* Parse options from arguments given */
442int  options_from_file __P((char *filename, int must_exist, int check_prot,
443                            int privileged));
444                                /* Parse options from an options file */
445int  options_from_user __P((void)); /* Parse options from user's .ppprc */
446int  options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */
447int  options_from_list __P((struct wordlist *, int privileged));
448                                /* Parse options from a wordlist */
449int  getword __P((FILE *f, char *word, int *newlinep, char *filename));
450                                /* Read a word from a file */
451void option_error __P((char *fmt, ...));
452                                /* Print an error message about an option */
453int int_option __P((char *, int *));
454                                /* Simplified number_option for decimal ints */
455void add_options __P((option_t *)); /* Add extra options */
456
457/*
458 * This structure is used to store information about certain
459 * options, such as where the option value came from (/etc/ppp/options,
460 * command line, etc.) and whether it came from a privileged source.
461 */
462
463struct option_info {
464    int     priv;               /* was value set by sysadmin? */
465    char    *source;            /* where option came from */
466};
467
468extern struct option_info devnam_info;
469extern struct option_info initializer_info;
470extern struct option_info connect_script_info;
471extern struct option_info disconnect_script_info;
472extern struct option_info welcomer_info;
473extern struct option_info ptycommand_info;
474
475/*
476 * Hooks to enable plugins to change various things.
477 */
478extern int (*new_phase_hook) __P((int));
479extern int (*idle_time_hook) __P((struct ppp_idle *));
480extern int (*holdoff_hook) __P((void));
481extern int (*pap_check_hook) __P((void));
482extern int (*pap_auth_hook) __P((char *user, char *passwd/*, char **msgp,
483                                 struct wordlist **paddrs,
484                                 struct wordlist **popts*/));
485extern void (*pap_logout_hook) __P((void));
486extern int (*pap_passwd_hook) __P((char *user, char *passwd));
487extern void (*ip_up_hook) __P((void));
488extern void (*ip_down_hook) __P((void));
489extern void (*auth_linkup_hook) __P((void));
490extern void (*auth_linkdown_hook) __P((void));
491
492/*
493 * Inline versions of get/put char/short/long.
494 * Pointer is advanced; we assume that both arguments
495 * are lvalues and will already be in registers.
496 * cp MUST be u_char *.
497 */
498#define GETCHAR(c, cp) { \
499        (c) = *(cp)++; \
500}
501#define PUTCHAR(c, cp) { \
502        *(cp)++ = (u_char) (c); \
503}
504
505
506#define GETSHORT(s, cp) { \
507        (s) = *(cp)++ << 8; \
508        (s) |= *(cp)++; \
509}
510#define PUTSHORT(s, cp) { \
511        *(cp)++ = (u_char) ((s) >> 8); \
512        *(cp)++ = (u_char) (s); \
513}
514
515#define GETLONG(l, cp) { \
516        (l) = *(cp)++ << 8; \
517        (l) |= *(cp)++; (l) <<= 8; \
518        (l) |= *(cp)++; (l) <<= 8; \
519        (l) |= *(cp)++; \
520}
521#define PUTLONG(l, cp) { \
522        *(cp)++ = (u_char) ((l) >> 24); \
523        *(cp)++ = (u_char) ((l) >> 16); \
524        *(cp)++ = (u_char) ((l) >> 8); \
525        *(cp)++ = (u_char) (l); \
526}
527
528#define INCPTR(n, cp)   ((cp) += (n))
529#define DECPTR(n, cp)   ((cp) -= (n))
530
531/*
532 * System dependent definitions for user-level 4.3BSD UNIX implementation.
533 */
534
535#define TIMEOUT(r, f, t)        ppptimeout((r), (f), (t))
536#define UNTIMEOUT(r, f)         untimeout((r), (f))
537
538#define BCOPY(s, d, l)          memcpy(d, s, l)
539#define BZERO(s, n)             memset(s, 0, n)
540
541#define PRINTMSG(m, l)          { info("Remote message: %0.*v", l, m); }
542
543/*
544 * MAKEHEADER - Add Header fields to a packet.
545 */
546#define MAKEHEADER(p, t) { \
547    PUTCHAR(PPP_ALLSTATIONS, p); \
548    PUTCHAR(PPP_UI, p); \
549    PUTSHORT(t, p); }
550
551/*
552 * Exit status values.
553 */
554#define EXIT_OK                 0
555#define EXIT_FATAL_ERROR        1
556#define EXIT_OPTION_ERROR       2
557#define EXIT_NOT_ROOT           3
558#define EXIT_NO_KERNEL_SUPPORT  4
559#define EXIT_USER_REQUEST       5
560#define EXIT_LOCK_FAILED        6
561#define EXIT_OPEN_FAILED        7
562#define EXIT_CONNECT_FAILED     8
563#define EXIT_PTYCMD_FAILED      9
564#define EXIT_NEGOTIATION_FAILED 10
565#define EXIT_PEER_AUTH_FAILED   11
566#define EXIT_IDLE_TIMEOUT       12
567#define EXIT_CONNECT_TIME       13
568#define EXIT_CALLBACK           14
569#define EXIT_PEER_DEAD          15
570#define EXIT_HANGUP             16
571#define EXIT_LOOPBACK           17
572#define EXIT_INIT_FAILED        18
573#define EXIT_AUTH_TOPEER_FAILED 19
574
575/*
576 * Debug macros.  Slightly useful for finding bugs in pppd, not particularly
577 * useful for finding out why your connection isn't being established.
578 */
579
580#ifdef DEBUGALL
581#define DEBUGMAIN       1
582#define DEBUGFSM        1
583#define DEBUGLCP        1
584#define DEBUGIPCP       1
585#define DEBUGIPV6CP     1
586#define DEBUGUPAP       1
587#define DEBUGCHAP       1
588#endif
589#define DEBUGMAIN       1
590#define DEBUGUPAP       1
591#define DEBUGCHAP       1
592
593
594#ifdef DEBUGMAIN
595#define MAINDEBUG(x)    if (debug) dbglog x
596#else
597#define MAINDEBUG(x)
598#endif
599
600#ifdef DEBUGSYS
601#define SYSDEBUG(x)     if (debug) dbglog x
602#else
603#define SYSDEBUG(x)
604#endif
605
606#ifdef DEBUGFSM
607#define FSMDEBUG(x)     if (debug) dbglog x
608#else
609#define FSMDEBUG(x)
610#endif
611
612#ifdef DEBUGLCP
613#define LCPDEBUG(x)     if (debug) dbglog x
614#else
615#define LCPDEBUG(x)
616#endif
617
618#ifdef DEBUGIPCP
619#define IPCPDEBUG(x)    if (debug) dbglog x
620#else
621#define IPCPDEBUG(x)
622#endif
623
624#ifdef DEBUGIPV6CP
625#define IPV6CPDEBUG(x)  if (debug) dbglog x
626#else
627#define IPV6CPDEBUG(x)
628#endif
629
630#ifdef DEBUGUPAP
631#define UPAPDEBUG(x)    if (debug) dbglog x
632#else
633#define UPAPDEBUG(x)
634#endif
635
636#ifdef DEBUGCHAP
637#define CHAPDEBUG(x)    if (debug) dbglog x
638#else
639#define CHAPDEBUG(x)
640#endif
641
642#ifdef DEBUGIPXCP
643#define IPXCPDEBUG(x)   if (debug) dbglog x
644#else
645#define IPXCPDEBUG(x)
646#endif
647
648#ifndef SIGTYPE
649#if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE)
650#define SIGTYPE void
651#else
652#define SIGTYPE int
653#endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */
654#endif /* SIGTYPE */
655
656#ifndef MIN
657#define MIN(a, b)       ((a) < (b)? (a): (b))
658#endif
659#ifndef MAX
660#define MAX(a, b)       ((a) > (b)? (a): (b))
661#endif
662
663#endif /* __PPP_H__ */
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