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/* 23 * TODO: 24 */ 25 26#ifndef __PPPD_H__ 27#define __PPPD_H__ 28 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" 36 37#if defined(__STDC__) 38#include <stdarg.h> 39#define __V(x) x 40#else 41#include <varargs.h> 42#define __V(x) (va_alist) va_dcl 43#define const 44#define volatile 45#endif 46 47#ifdef INET6 48#include "eui64.h" 49#endif 50 51/* 52 * Limits. 53 */ 54 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 */ 60 61/* 62 * Option descriptor structure. 63 */ 64 65typedef unsigned char bool; 66 67enum opt_type { 68 o_special_noarg = 0, 69 o_special = 1, 70 o_bool, 71 o_int, 72 o_uint32, 73 o_string, 74 o_wild, 75}; 76 77typedef struct { 78 char *name; /* name of the option */ 79 enum opt_type type; 80 void *addr; 81 char *description; 82 int flags; 83 void *addr2; 84 int upper_limit; 85 int lower_limit; 86 const char *source; 87 short int priority; 88 short int winner; 89} option_t; 90 91/* Values for flags */ 92#define OPT_VALUE 0xff /* mask for presupplied value */ 93#define OPT_HEX 0x100 /* int option is in hex */ 94#define OPT_NOARG 0x200 /* option doesn't take argument */ 95#define OPT_OR 0x400 /* OR in argument to value */ 96#define OPT_INC 0x800 /* increment value */ 97#define OPT_PRIV 0x1000 /* privileged option */ 98#define OPT_STATIC 0x2000 /* string option goes into static array */ 99#define OPT_LLIMIT 0x4000 /* check value against lower limit */ 100#define OPT_ULIMIT 0x8000 /* check value against upper limit */ 101#define OPT_LIMITS (OPT_LLIMIT|OPT_ULIMIT) 102#define OPT_ZEROOK 0x10000 /* 0 value is OK even if not within limits */ 103#define OPT_HIDE 0x10000 /* for o_string, print value as ?????? */ 104#define OPT_A2LIST 0x10000 /* for o_special, keep list of values */ 105#define OPT_NOINCR 0x20000 /* value mustn't be increased */ 106#define OPT_ZEROINF 0x40000 /* with OPT_NOINCR, 0 == infinity */ 107#define OPT_PRIO 0x80000 /* process option priorities for this option */ 108#define OPT_PRIOSUB 0x100000 /* subsidiary member of priority group */ 109#define OPT_ALIAS 0x200000 /* option is alias for previous option */ 110#define OPT_A2COPY 0x400000 /* addr2 -> second location to rcv value */ 111#define OPT_ENABLE 0x800000 /* use *addr2 as enable for option */ 112#define OPT_A2CLR 0x1000000 /* clear *(bool *)addr2 */ 113#define OPT_PRIVFIX 0x2000000 /* user can't override if set by root */ 114#define OPT_INITONLY 0x4000000 /* option can only be set in init phase */ 115#define OPT_DEVEQUIV 0x8000000 /* equiv to device name */ 116#define OPT_DEVNAM (OPT_INITONLY | OPT_DEVEQUIV) 117#define OPT_A2PRINTER 0x10000000 /* *addr2 is a fn for printing option */ 118#define OPT_A2STRVAL 0x20000000 /* *addr2 points to current string value */ 119#define OPT_NOPRINT 0x40000000 /* don't print this option at all */ 120 121#define OPT_VAL(x) ((x) & OPT_VALUE) 122 123/* Values for priority */ 124#define OPRIO_DEFAULT 0 /* a default value */ 125#define OPRIO_CFGFILE 1 /* value from a configuration file */ 126#define OPRIO_CMDLINE 2 /* value from the command line */ 127#define OPRIO_SECFILE 3 /* value from options in a secrets file */ 128#define OPRIO_ROOT 100 /* added to priority if OPT_PRIVFIX && root */ 129 130#ifndef GIDSET_TYPE 131#define GIDSET_TYPE gid_t 132#endif 133 134/* Structure representing a list of permitted IP addresses. */ 135struct permitted_ip { 136 int permit; /* 1 = permit, 0 = forbid */ 137 u_int32_t base; /* match if (addr & mask) == base */ 138 u_int32_t mask; /* base and mask are in network byte order */ 139}; 140 141/* 142 * Unfortunately, the linux kernel driver uses a different structure 143 * for statistics from the rest of the ports. 144 * This structure serves as a common representation for the bits 145 * pppd needs. 146 */ 147struct pppd_stats { 148 unsigned int bytes_in; 149 unsigned int bytes_out; 150}; 151 152/* Used for storing a sequence of words. Usually malloced. */ 153struct wordlist { 154 struct wordlist *next; 155 char *word; 156}; 157 158/* An endpoint discriminator, used with multilink. */ 159#define MAX_ENDP_LEN 20 /* maximum length of discriminator value */ 160struct epdisc { 161 unsigned char class; 162 unsigned char length; 163 unsigned char value[MAX_ENDP_LEN]; 164}; 165 166/* values for epdisc.class */ 167#define EPD_NULL 0 /* null discriminator, no data */ 168#define EPD_LOCAL 1 169#define EPD_IP 2 170#define EPD_MAC 3 171#define EPD_MAGIC 4 172#define EPD_PHONENUM 5 173 174typedef void (*notify_func) __P((void *, int)); 175 176struct notifier { 177 struct notifier *next; 178 notify_func func; 179 void *arg; 180}; 181 182/* 183 * Global variables. 184 */ 185 186extern int hungup; /* Physical layer has disconnected */ 187extern int ifunit; /* Interface unit number */ 188extern char ifname[]; /* Interface name */ 189extern char hostname[]; /* Our hostname */ 190extern u_char outpacket_buf[]; /* Buffer for outgoing packets */ 191extern int phase; /* Current state of link - see values below */ 192extern int baud_rate; /* Current link speed in bits/sec */ 193extern char *progname; /* Name of this program */ 194extern int redirect_stderr;/* Connector's stderr should go to file */ 195extern char peer_authname[];/* Authenticated name of peer */ 196extern int privileged; /* We were run by real-uid root */ 197extern int need_holdoff; /* Need holdoff period after link terminates */ 198extern char **script_env; /* Environment variables for scripts */ 199extern int detached; /* Have detached from controlling tty */ 200extern GIDSET_TYPE groups[NGROUPS_MAX]; /* groups the user is in */ 201extern int ngroups; /* How many groups valid in groups */ 202extern struct pppd_stats link_stats; /* byte/packet counts etc. for link */ 203extern int link_stats_valid; /* set if link_stats is valid */ 204extern int link_connect_time; /* time the link was up for */ 205extern int using_pty; /* using pty as device (notty or pty opt.) */ 206extern int log_to_fd; /* logging to this fd as well as syslog */ 207extern bool log_default; /* log_to_fd is default (stdout) */ 208extern char *no_ppp_msg; /* message to print if ppp not in kernel */ 209extern volatile int status; /* exit status for pppd */ 210extern bool devnam_fixed; /* can no longer change devnam */ 211extern int unsuccess; /* # unsuccessful connection attempts */ 212extern int do_callback; /* set if we want to do callback next */ 213extern int doing_callback; /* set if this is a callback */ 214extern char ppp_devnam[MAXPATHLEN]; 215extern struct notifier *pidchange; /* for notifications of pid changing */ 216extern struct notifier *phasechange; /* for notifications of phase changes */ 217extern struct notifier *exitnotify; /* for notification that we're exiting */ 218extern struct notifier *sigreceived; /* notification of received signal */ 219extern int listen_time; /* time to listen first (ms) */ 220 221/* Values for do_callback and doing_callback */ 222#define CALLBACK_DIALIN 1 /* we are expecting the call back */ 223#define CALLBACK_DIALOUT 2 /* we are dialling out to call back */ 224 225/* 226 * Variables set by command-line options. 227 */ 228 229extern int debug; /* Debug flag */ 230extern int kdebugflag; /* Tell kernel to print debug messages */ 231extern int default_device; /* Using /dev/tty or equivalent */ 232extern char devnam[MAXPATHLEN]; /* Device name */ 233extern int crtscts; /* Use hardware flow control */ 234extern bool modem; /* Use modem control lines */ 235extern int inspeed; /* Input/Output speed requested */ 236extern u_int32_t netmask; /* IP netmask to set on interface */ 237extern bool lockflag; /* Create lock file to lock the serial dev */ 238extern bool nodetach; /* Don't detach from controlling tty */ 239extern bool updetach; /* Detach from controlling tty when link up */ 240extern char *initializer; /* Script to initialize physical link */ 241extern char *connect_script; /* Script to establish physical link */ 242extern char *disconnect_script; /* Script to disestablish physical link */ 243extern char *welcomer; /* Script to welcome client after connection */ 244extern char *ptycommand; /* Command to run on other side of pty */ 245extern int maxconnect; /* Maximum connect time (seconds) */ 246extern char user[MAXNAMELEN];/* Our name for authenticating ourselves */ 247extern char passwd[MAXSECRETLEN]; /* Password for PAP or CHAP */ 248extern bool auth_required; /* Peer is required to authenticate */ 249extern bool persist; /* Reopen link after it goes down */ 250extern bool uselogin; /* Use /etc/passwd for checking PAP */ 251extern char our_name[MAXNAMELEN];/* Our name for authentication purposes */ 252extern char remote_name[MAXNAMELEN]; /* Peer's name for authentication */ 253extern bool explicit_remote;/* remote_name specified with remotename opt */ 254extern bool demand; /* Do dial-on-demand */ 255extern char *ipparam; /* Extra parameter for ip up/down scripts */ 256extern bool cryptpap; /* Others' PAP passwords are encrypted */ 257extern int idle_time_limit;/* Shut down link if idle for this long */ 258extern int holdoff; /* Dead time before restarting */ 259extern bool holdoff_specified; /* true if user gave a holdoff value */ 260extern bool notty; /* Stdin/out is not a tty */ 261extern char *pty_socket; /* Socket to connect to pty */ 262extern char *record_file; /* File to record chars sent/received */ 263extern bool sync_serial; /* Device is synchronous serial device */ 264extern int maxfail; /* Max # of unsuccessful connection attempts */ 265extern char linkname[MAXPATHLEN]; /* logical name for link */ 266extern bool tune_kernel; /* May alter kernel settings as necessary */ 267extern int connect_delay; /* Time to delay after connect script */ 268extern int max_data_rate; /* max bytes/sec through charshunt */ 269extern int req_unit; /* interface unit number to use */ 270extern bool multilink; /* enable multilink operation */ 271extern bool noendpoint; /* don't send or accept endpt. discrim. */ 272extern char *bundle_name; /* bundle name for multilink */ 273extern bool dump_options; /* print out option values */ 274extern bool dryrun; /* check everything, print options, exit */ 275 276#ifdef PPP_FILTER 277extern struct bpf_program pass_filter; /* Filter for pkts to pass */ 278extern struct bpf_program active_filter; /* Filter for link-active pkts */ 279#endif 280 281#ifdef MSLANMAN 282extern bool ms_lanman; /* Use LanMan password instead of NT */ 283 /* Has meaning only with MS-CHAP challenges */ 284#endif 285 286extern char *current_option; /* the name of the option being parsed */ 287extern int privileged_option; /* set iff the current option came from root */ 288extern char *option_source; /* string saying where the option came from */ 289extern int option_priority; /* priority of current options */ 290 291/* 292 * Values for phase. 293 */ 294#define PHASE_DEAD 0 295#define PHASE_INITIALIZE 1 296#define PHASE_SERIALCONN 2 297#define PHASE_DORMANT 3 298#define PHASE_ESTABLISH 4 299#define PHASE_AUTHENTICATE 5 300#define PHASE_CALLBACK 6 301#define PHASE_NETWORK 7 302#define PHASE_RUNNING 8 303#define PHASE_TERMINATE 9 304#define PHASE_DISCONNECT 10 305#define PHASE_HOLDOFF 11 306 307/* 308 * The following struct gives the addresses of procedures to call 309 * for a particular protocol. 310 */ 311struct protent { 312 u_short protocol; /* PPP protocol number */ 313 /* Initialization procedure */ 314 void (*init) __P((int unit)); 315 /* Process a received packet */ 316 void (*input) __P((int unit, u_char *pkt, int len)); 317 /* Process a received protocol-reject */ 318 void (*protrej) __P((int unit)); 319 /* Lower layer has come up */ 320 void (*lowerup) __P((int unit)); 321 /* Lower layer has gone down */ 322 void (*lowerdown) __P((int unit)); 323 /* Open the protocol */ 324 void (*open) __P((int unit)); 325 /* Close the protocol */ 326 void (*close) __P((int unit, char *reason)); 327 /* Print a packet in readable form */ 328 int (*printpkt) __P((u_char *pkt, int len, 329 void (*printer) __P((void *, char *, ...)), 330 void *arg)); 331 /* Process a received data packet */ 332 void (*datainput) __P((int unit, u_char *pkt, int len)); 333 bool enabled_flag; /* 0 iff protocol is disabled */ 334 char *name; /* Text name of protocol */ 335 char *data_name; /* Text name of corresponding data protocol */ 336 option_t *options; /* List of command-line options */ 337 /* Check requested options, assign defaults */ 338 void (*check_options) __P((void)); 339 /* Configure interface for demand-dial */ 340 int (*demand_conf) __P((int unit)); 341 /* Say whether to bring up link for this pkt */ 342 int (*active_pkt) __P((u_char *pkt, int len)); 343}; 344 345/* Table of pointers to supported protocols */ 346extern struct protent *protocols[]; 347 348/* 349 * This struct contains pointers to a set of procedures for 350 * doing operations on a "channel". A channel provides a way 351 * to send and receive PPP packets - the canonical example is 352 * a serial port device in PPP line discipline (or equivalently 353 * with PPP STREAMS modules pushed onto it). 354 */ 355struct channel { 356 /* set of options for this channel */ 357 option_t *options; 358 /* find and process a per-channel options file */ 359 void (*process_extra_options) __P((void)); 360 /* check all the options that have been given */ 361 void (*check_options) __P((void)); 362 /* get the channel ready to do PPP, return a file descriptor */ 363 int (*connect) __P((void)); 364 /* we're finished with the channel */ 365 void (*disconnect) __P((void)); 366 /* put the channel into PPP `mode' */ 367 int (*establish_ppp) __P((int)); 368 /* take the channel out of PPP `mode', restore loopback if demand */ 369 void (*disestablish_ppp) __P((int)); 370 /* set the transmit-side PPP parameters of the channel */ 371 void (*send_config) __P((int, u_int32_t, int, int)); 372 /* set the receive-side PPP parameters of the channel */ 373 void (*recv_config) __P((int, u_int32_t, int, int)); 374 /* cleanup on error or normal exit */ 375 void (*cleanup) __P((void)); 376 /* close the device, called in children after fork */ 377 void (*close) __P((void)); 378}; 379 380extern struct channel *the_channel; 381 382#define ppp_send_config(unit, mtu, accm, pc, acc) \ 383do { \ 384 if (the_channel->send_config) \ 385 (*the_channel->send_config)((mtu), (accm), (pc), (acc)); \ 386} while (0) 387 388#define ppp_recv_config(unit, mtu, accm, pc, acc) \ 389do { \ 390 if (the_channel->send_config) \ 391 (*the_channel->recv_config)((mtu), (accm), (pc), (acc)); \ 392} while (0) 393 394/* 395 * Prototypes. 396 */ 397 398/* Procedures exported from main.c. */ 399void set_ifunit __P((int)); /* set stuff that depends on ifunit */ 400void detach __P((void)); /* Detach from controlling tty */ 401void die __P((int)); /* Cleanup and exit */ 402void quit __P((void)); /* like die(1) */ 403void novm __P((char *)); /* Say we ran out of memory, and die */ 404void timeout __P((void (*func)(void *), void *arg, int s, int us)); 405 /* Call func(arg) after s.us seconds */ 406void untimeout __P((void (*func)(void *), void *arg)); 407 /* Cancel call to func(arg) */ 408void record_child __P((int, char *, void (*) (void *), void *)); 409int device_script __P((char *cmd, int in, int out, int dont_wait)); 410 /* Run `cmd' with given stdin and stdout */ 411pid_t run_program __P((char *prog, char **args, int must_exist, 412 void (*done)(void *), void *arg)); 413 /* Run program prog with args in child */ 414void reopen_log __P((void)); /* (re)open the connection to syslog */ 415void update_link_stats __P((int)); /* Get stats at link termination */ 416void script_setenv __P((char *, char *, int)); /* set script env var */ 417void script_unsetenv __P((char *)); /* unset script env var */ 418void new_phase __P((int)); /* signal start of new phase */ 419void add_notifier __P((struct notifier **, notify_func, void *)); 420void remove_notifier __P((struct notifier **, notify_func, void *)); 421void notify __P((struct notifier *, int)); 422 423/* Procedures exported from tty.c. */ 424void tty_init __P((void)); 425 426/* Procedures exported from utils.c. */ 427void log_packet __P((u_char *, int, char *, int)); 428 /* Format a packet and log it with syslog */ 429void print_string __P((char *, int, void (*) (void *, char *, ...), 430 void *)); /* Format a string for output */ 431int slprintf __P((char *, int, char *, ...)); /* sprintf++ */ 432int vslprintf __P((char *, int, char *, va_list)); /* vsprintf++ */ 433size_t strlcpy __P((char *, const char *, size_t)); /* safe strcpy */ 434size_t strlcat __P((char *, const char *, size_t)); /* safe strncpy */ 435#ifdef nostrip //Modified by Silver to shrink code 436void dbglog __P((char *, ...)); /* log a debug message */ 437void info __P((char *, ...)); /* log an informational message */ 438void notice __P((char *, ...)); /* log a notice-level message */ 439void warn __P((char *, ...)); /* log a warning message */ 440void error __P((char *, ...)); /* log an error message */ 441void fatal __P((char *, ...)); /* log an error message and die(1) */ 442void init_pr_log __P((char *, int)); /* initialize for using pr_log */ 443void pr_log __P((void *, char *, ...)); /* printer fn, output to syslog */ 444void end_pr_log __P((void)); /* finish up after using pr_log */ 445#else 446#define dbglog(a, ...) 447#define info(a, ...) 448#define notice(a, ...) 449#define warn(a, ...) 450#define error(a, ...) 451#define fatal(a, ...) 452#define init_pr_log(a, b) 453#define pr_log(a,b, ...) 454#define end_pr_log() 455#endif 456 457/* Procedures exported from auth.c */ 458void link_required __P((int)); /* we are starting to use the link */ 459void link_terminated __P((int)); /* we are finished with the link */ 460void link_down __P((int)); /* the LCP layer has left the Opened state */ 461void link_established __P((int)); /* the link is up; authenticate now */ 462void start_networks __P((void)); /* start all the network control protos */ 463void np_up __P((int, int)); /* a network protocol has come up */ 464void np_down __P((int, int)); /* a network protocol has gone down */ 465void np_finished __P((int, int)); /* a network protocol no longer needs link */ 466void auth_peer_fail __P((int, int)); 467 /* peer failed to authenticate itself */ 468void auth_peer_success __P((int, int, char *, int)); 469 /* peer successfully authenticated itself */ 470void auth_withpeer_fail __P((int, int)); 471 /* we failed to authenticate ourselves */ 472void auth_withpeer_success __P((int, int)); 473 /* we successfully authenticated ourselves */ 474void auth_check_options __P((void)); 475 /* check authentication options supplied */ 476void auth_reset __P((int)); /* check what secrets we have */ 477int check_passwd __P((int, char *, int, char *, int, char **)); 478 /* Check peer-supplied username/password */ 479int get_secret __P((int, char *, char *, char *, int *, int)); 480 /* get "secret" for chap */ 481int auth_ip_addr __P((int, u_int32_t)); 482 /* check if IP address is authorized */ 483int bad_ip_adrs __P((u_int32_t)); 484 /* check if IP address is unreasonable */ 485 486/* Procedures exported from demand.c */ 487void demand_conf __P((void)); /* config interface(s) for demand-dial */ 488void demand_block __P((void)); /* set all NPs to queue up packets */ 489void demand_unblock __P((void)); /* set all NPs to pass packets */ 490void demand_discard __P((void)); /* set all NPs to discard packets */ 491/* Foxconn added, Winster Chan, 05/15/2006, demand_discard2() */ 492void demand_discard2 __P((void)); /* set all NPs to discard packets without errors */ 493void demand_rexmit __P((int)); /* retransmit saved frames for an NP */ 494int loop_chars __P((unsigned char *, int)); /* process chars from loopback */ 495int loop_frame __P((unsigned char *, int)); /* should we bring link up? */ 496 497#ifdef HAVE_MULTILINK //Winster Chan added 05/16/2006 498/* Procedures exported from multilink.c */ 499void mp_check_options __P((void)); /* Check multilink-related options */ 500int mp_join_bundle __P((void)); /* join our link to an appropriate bundle */ 501char *epdisc_to_str __P((struct epdisc *)); /* string from endpoint discrim. */ 502int str_to_epdisc __P((struct epdisc *, char *)); /* endpt disc. from str */ 503#endif //HAVE_MULTILINK Winster Chan added 05/16/2006 504 505/* Procedures exported from sys-*.c */ 506void sys_init __P((void)); /* Do system-dependent initialization */ 507void sys_cleanup __P((void)); /* Restore system state before exiting */ 508int sys_check_options __P((void)); /* Check options specified */ 509void sys_close __P((void)); /* Clean up in a child before execing */ 510int ppp_available __P((void)); /* Test whether ppp kernel support exists */ 511int get_pty __P((int *, int *, char *, int)); /* Get pty master/slave */ 512int open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */ 513int tty_establish_ppp __P((int)); /* Turn serial port into a ppp interface */ 514void tty_disestablish_ppp __P((int)); /* Restore port to normal operation */ 515void generic_disestablish_ppp __P((int dev_fd)); /* Restore device setting */ 516int generic_establish_ppp __P((int dev_fd)); /* Make a ppp interface */ 517void make_new_bundle __P((int, int, int, int)); /* Create new bundle */ 518int bundle_attach __P((int)); /* Attach link to existing bundle */ 519void cfg_bundle __P((int, int, int, int)); /* Configure existing bundle */ 520void clean_check __P((void)); /* Check if line was 8-bit clean */ 521void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */ 522void restore_tty __P((int)); /* Restore port's original parameters */ 523void setdtr __P((int, int)); /* Raise or lower port's DTR line */ 524void output __P((int, u_char *, int)); /* Output a PPP packet */ 525void wait_input __P((struct timeval *)); 526 /* Wait for input, with timeout */ 527void add_fd __P((int)); /* Add fd to set to wait for */ 528void remove_fd __P((int)); /* Remove fd from set to wait for */ 529int read_packet __P((u_char *)); /* Read PPP packet */ 530int get_loop_output __P((void)); /* Read pkts from loopback */ 531void tty_send_config __P((int, u_int32_t, int, int)); 532 /* Configure i/f transmit parameters */ 533void tty_set_xaccm __P((ext_accm)); 534 /* Set extended transmit ACCM */ 535void tty_recv_config __P((int, u_int32_t, int, int)); 536 /* Configure i/f receive parameters */ 537int ccp_test __P((int, u_char *, int, int)); 538 /* Test support for compression scheme */ 539void ccp_flags_set __P((int, int, int)); 540 /* Set kernel CCP state */ 541int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */ 542int get_idle_time __P((int, struct ppp_idle *)); 543 /* Find out how long link has been idle */ 544int get_ppp_stats __P((int, struct pppd_stats *)); 545 /* Return link statistics */ 546void netif_set_mtu __P((int, int)); /* Set PPP interface MTU */ 547int sifvjcomp __P((int, int, int, int)); 548 /* Configure VJ TCP header compression */ 549int sifup __P((int)); /* Configure i/f up for one protocol */ 550int sifnpmode __P((int u, int proto, enum NPmode mode)); 551 /* Set mode for handling packets for proto */ 552int sifdown __P((int)); /* Configure i/f down for one protocol */ 553int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t)); 554 /* Configure IPv4 addresses for i/f */ 555int cifaddr __P((int, u_int32_t, u_int32_t)); 556 /* Reset i/f IP addresses */ 557#ifdef INET6 558int sif6addr __P((int, eui64_t, eui64_t)); 559 /* Configure IPv6 addresses for i/f */ 560int cif6addr __P((int, eui64_t, eui64_t)); 561 /* Remove an IPv6 address from i/f */ 562#endif 563int sifdefaultroute __P((int, u_int32_t, u_int32_t)); 564 /* Create default route through i/f */ 565int cifdefaultroute __P((int, u_int32_t, u_int32_t)); 566 /* Delete default route through i/f */ 567int sifproxyarp __P((int, u_int32_t)); 568 /* Add proxy ARP entry for peer */ 569int cifproxyarp __P((int, u_int32_t)); 570 /* Delete proxy ARP entry for peer */ 571u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */ 572int lock __P((char *)); /* Create lock file for device */ 573int relock __P((int)); /* Rewrite lock file with new pid */ 574void unlock __P((void)); /* Delete previously-created lock file */ 575void logwtmp __P((const char *, const char *, const char *)); 576 /* Write entry to wtmp file */ 577int get_host_seed __P((void)); /* Get host-dependent random number seed */ 578int have_route_to __P((u_int32_t)); /* Check if route to addr exists */ 579#ifdef PPP_FILTER 580int set_filters __P((struct bpf_program *pass, struct bpf_program *active)); 581 /* Set filter programs in kernel */ 582#endif 583#ifdef IPX_CHANGE 584int sipxfaddr __P((int, unsigned long, unsigned char *)); 585int cipxfaddr __P((int)); 586#endif 587int get_if_hwaddr __P((u_char *addr, char *name)); 588char *get_first_ethernet __P((void)); 589 590/* Procedures exported from options.c */ 591int parse_args __P((int argc, char **argv)); 592 /* Parse options from arguments given */ 593int options_from_file __P((char *filename, int must_exist, int check_prot, 594 int privileged)); 595 /* Parse options from an options file */ 596int options_from_user __P((void)); /* Parse options from user's .ppprc */ 597int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */ 598int options_from_list __P((struct wordlist *, int privileged)); 599 /* Parse options from a wordlist */ 600int getword __P((FILE *f, char *word, int *newlinep, char *filename)); 601 /* Read a word from a file */ 602void option_error __P((char *fmt, ...)); 603 /* Print an error message about an option */ 604int int_option __P((char *, int *)); 605 /* Simplified number_option for decimal ints */ 606void add_options __P((option_t *)); /* Add extra options */ 607void check_options __P((void)); /* check values after all options parsed */ 608int remove_option __P((char *)); /* Disable the specified option */ 609int override_value __P((const char *, int, const char *)); 610 /* override value if permitted by priority */ 611void print_options __P((void (*) __P((void *, char *, ...)), void *)); 612 /* print out values of all options */ 613 614int parse_dotted_ip __P((char *, u_int32_t *)); 615 616/* 617 * Hooks to enable plugins to change various things. 618 */ 619extern int (*new_phase_hook) __P((int)); 620extern int (*idle_time_hook) __P((struct ppp_idle *)); 621extern int (*holdoff_hook) __P((void)); 622extern int (*pap_check_hook) __P((void)); 623extern int (*pap_auth_hook) __P((char *user, char *passwd, char **msgp, 624 struct wordlist **paddrs, 625 struct wordlist **popts)); 626extern void (*pap_logout_hook) __P((void)); 627extern int (*pap_passwd_hook) __P((char *user, char *passwd)); 628extern void (*ip_up_hook) __P((void)); 629extern void (*ip_down_hook) __P((void)); 630extern void (*ip_choose_hook) __P((u_int32_t *)); 631 632/* 633 * Inline versions of get/put char/short/long. 634 * Pointer is advanced; we assume that both arguments 635 * are lvalues and will already be in registers. 636 * cp MUST be u_char *. 637 */ 638#define GETCHAR(c, cp) { \ 639 (c) = *(cp)++; \ 640} 641#define PUTCHAR(c, cp) { \ 642 *(cp)++ = (u_char) (c); \ 643} 644 645 646#define GETSHORT(s, cp) { \ 647 (s) = *(cp)++ << 8; \ 648 (s) |= *(cp)++; \ 649} 650#define PUTSHORT(s, cp) { \ 651 *(cp)++ = (u_char) ((s) >> 8); \ 652 *(cp)++ = (u_char) (s); \ 653} 654 655#define GETLONG(l, cp) { \ 656 (l) = *(cp)++ << 8; \ 657 (l) |= *(cp)++; (l) <<= 8; \ 658 (l) |= *(cp)++; (l) <<= 8; \ 659 (l) |= *(cp)++; \ 660} 661#define PUTLONG(l, cp) { \ 662 *(cp)++ = (u_char) ((l) >> 24); \ 663 *(cp)++ = (u_char) ((l) >> 16); \ 664 *(cp)++ = (u_char) ((l) >> 8); \ 665 *(cp)++ = (u_char) (l); \ 666} 667 668#define INCPTR(n, cp) ((cp) += (n)) 669#define DECPTR(n, cp) ((cp) -= (n)) 670 671/* 672 * System dependent definitions for user-level 4.3BSD UNIX implementation. 673 */ 674 675#define TIMEOUT(r, f, t) timeout((r), (f), (t), 0) 676#define UNTIMEOUT(r, f) untimeout((r), (f)) 677 678#define BCOPY(s, d, l) memcpy(d, s, l) 679#define BZERO(s, n) memset(s, 0, n) 680 681#define PRINTMSG(m, l) { info("Remote message: %0.*v", l, m); } 682 683/* 684 * MAKEHEADER - Add Header fields to a packet. 685 */ 686#define MAKEHEADER(p, t) { \ 687 PUTCHAR(PPP_ALLSTATIONS, p); \ 688 PUTCHAR(PPP_UI, p); \ 689 PUTSHORT(t, p); } 690 691/* 692 * Exit status values. 693 */ 694#define EXIT_OK 0 695#define EXIT_FATAL_ERROR 1 696#define EXIT_OPTION_ERROR 2 697#define EXIT_NOT_ROOT 3 698#define EXIT_NO_KERNEL_SUPPORT 4 699#define EXIT_USER_REQUEST 5 700#define EXIT_LOCK_FAILED 6 701#define EXIT_OPEN_FAILED 7 702#define EXIT_CONNECT_FAILED 8 703#define EXIT_PTYCMD_FAILED 9 704#define EXIT_NEGOTIATION_FAILED 10 705#define EXIT_PEER_AUTH_FAILED 11 706#define EXIT_IDLE_TIMEOUT 12 707#define EXIT_CONNECT_TIME 13 708#define EXIT_CALLBACK 14 709#define EXIT_PEER_DEAD 15 710#define EXIT_HANGUP 16 711#define EXIT_LOOPBACK 17 712#define EXIT_INIT_FAILED 18 713#define EXIT_AUTH_TOPEER_FAILED 19 714 715/* 716 * Debug macros. Slightly useful for finding bugs in pppd, not particularly 717 * useful for finding out why your connection isn't being established. 718 */ 719#ifdef DEBUGALL 720#define DEBUGMAIN 1 721#define DEBUGFSM 1 722#define DEBUGLCP 1 723#define DEBUGIPCP 1 724#define DEBUGIPV6CP 1 725#define DEBUGUPAP 1 726#define DEBUGCHAP 1 727#endif 728 729#ifndef LOG_PPP /* we use LOG_LOCAL2 for syslog by default */ 730#if defined(DEBUGMAIN) || defined(DEBUGFSM) || defined(DEBUGSYS) \ 731 || defined(DEBUGLCP) || defined(DEBUGIPCP) || defined(DEBUGUPAP) \ 732 || defined(DEBUGCHAP) || defined(DEBUG) || defined(DEBUGIPV6CP) 733#define LOG_PPP LOG_LOCAL2 734#else 735#define LOG_PPP LOG_DAEMON 736#endif 737#endif /* LOG_PPP */ 738 739#ifdef DEBUGMAIN 740#define MAINDEBUG(x) if (debug) dbglog x 741#else 742#define MAINDEBUG(x) 743#endif 744 745#ifdef DEBUGSYS 746#define SYSDEBUG(x) if (debug) dbglog x 747#else 748#define SYSDEBUG(x) 749#endif 750 751#ifdef DEBUGFSM 752#define FSMDEBUG(x) if (debug) dbglog x 753#else 754#define FSMDEBUG(x) 755#endif 756 757#ifdef DEBUGLCP 758#define LCPDEBUG(x) if (debug) dbglog x 759#else 760#define LCPDEBUG(x) 761#endif 762 763#ifdef DEBUGIPCP 764#define IPCPDEBUG(x) if (debug) dbglog x 765#else 766#define IPCPDEBUG(x) 767#endif 768 769#ifdef DEBUGIPV6CP 770#define IPV6CPDEBUG(x) if (debug) dbglog x 771#else 772#define IPV6CPDEBUG(x) 773#endif 774 775#ifdef DEBUGUPAP 776#define UPAPDEBUG(x) if (debug) dbglog x 777#else 778#define UPAPDEBUG(x) 779#endif 780 781#ifdef DEBUGCHAP 782#define CHAPDEBUG(x) if (debug) dbglog x 783#else 784#define CHAPDEBUG(x) 785#endif 786 787#ifdef DEBUGIPXCP 788#define IPXCPDEBUG(x) if (debug) dbglog x 789#else 790#define IPXCPDEBUG(x) 791#endif 792 793#ifndef SIGTYPE 794#if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) 795#define SIGTYPE void 796#else 797#define SIGTYPE int 798#endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */ 799#endif /* SIGTYPE */ 800 801#ifndef MIN 802#define MIN(a, b) ((a) < (b)? (a): (b)) 803#endif 804#ifndef MAX 805#define MAX(a, b) ((a) > (b)? (a): (b)) 806#endif 807 808#endif /* __PPP_H__ */ 809