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 1.12 1996/04/04 04:01:51 paulus Exp $
29 #include <stdio.h> /* for FILE */
30 #include <sys/param.h> /* for MAXPATHLEN and BSD4_4, if defined */
31 #include <sys/types.h> /* for u_int32_t, if defined */
32 #include <sys/time.h> /* for struct timeval */
33 #include <net/ppp_defs.h>
36 #define NUM_PPP 1 /* One PPP interface supported (per process) */
42 #define MAXWORDLEN 1024 /* max length of word in file (incl null) */
43 #define MAXARGS 1 /* max # args to a command */
44 #define MAXNAMELEN 256 /* max length of hostname or name for auth */
45 #define MAXSECRETLEN 256 /* max length of password or secret */
51 extern int hungup; /* Physical layer has disconnected */
52 extern int ifunit; /* Interface unit number */
53 extern char ifname[]; /* Interface name */
54 extern int ttyfd; /* Serial device file descriptor */
55 extern char hostname[]; /* Our hostname */
56 extern u_char outpacket_buf[]; /* Buffer for outgoing packets */
57 extern int phase; /* Current state of link - see values below */
58 extern int baud_rate; /* Current link speed in bits/sec */
59 extern char *progname; /* Name of this program */
62 * Variables set by command-line options.
65 extern int debug; /* Debug flag */
66 extern int kdebugflag; /* Tell kernel to print debug messages */
67 extern int default_device; /* Using /dev/tty or equivalent */
68 extern char devnam[]; /* Device name */
69 extern int crtscts; /* Use hardware flow control */
70 extern int modem; /* Use modem control lines */
71 extern int inspeed; /* Input/Output speed requested */
72 extern u_int32_t netmask; /* IP netmask to set on interface */
73 extern int lockflag; /* Create lock file to lock the serial dev */
74 extern int nodetach; /* Don't detach from controlling tty */
75 extern char *connector; /* Script to establish physical link */
76 extern char *disconnector; /* Script to disestablish physical link */
77 extern char *welcomer; /* Script to welcome client after connection */
78 extern int maxconnect; /* maximum number of seconds for a connection */
79 extern char user[]; /* Username for PAP */
80 extern char passwd[]; /* Password for PAP */
81 extern int auth_required; /* Peer is required to authenticate */
82 extern int proxyarp; /* Set up proxy ARP entry for peer */
83 extern int persist; /* Reopen link after it goes down */
84 extern int uselogin; /* Use /etc/passwd for checking PAP */
85 extern int lcp_echo_interval; /* Interval between LCP echo-requests */
86 extern int lcp_echo_fails; /* Tolerance to unanswered echo-requests */
87 extern char our_name[]; /* Our name for authentication purposes */
88 extern char remote_name[]; /* Peer's name for authentication */
89 extern int usehostname; /* Use hostname for our_name */
90 extern int disable_defaultip; /* Don't use hostname for default IP adrs */
91 extern int demand; /* Do dial-on-demand */
92 extern char *ipparam; /* Extra parameter for ip up/down scripts */
93 extern int cryptpap; /* Others' PAP passwords are encrypted */
94 extern int idle_time_limit;/* Shut down link if idle for this long */
95 extern int holdoff; /* Dead time before restarting */
96 extern struct bpf_program pass_filter; /* Filter for pkts to pass */
97 extern struct bpf_program active_filter; /* Filter for link-active pkts */
103 #define PHASE_DORMANT 1
104 #define PHASE_ESTABLISH 2
105 #define PHASE_AUTHENTICATE 3
106 #define PHASE_NETWORK 4
107 #define PHASE_TERMINATE 5
108 #define PHASE_HOLDOFF 6
111 * The following struct gives the addresses of procedures to call
112 * for a particular protocol.
115 u_short protocol; /* PPP protocol number */
116 void (*init)(); /* Initialization procedure */
117 void (*input)(); /* Process a received packet */
118 void (*protrej)(); /* Process a received protocol-reject */
119 void (*lowerup)(); /* Lower layer has come up */
120 void (*lowerdown)(); /* Lower layer has gone down */
121 void (*open)(); /* Open the protocol */
122 void (*close)(); /* Close the protocol */
123 int (*printpkt)(); /* Print a packet in readable form */
124 void (*datainput)(); /* Process a received data packet */
125 int enabled_flag; /* 0 iff protocol is disabled */
126 char *name; /* Text name of protocol */
127 void (*check_options)(); /* Check requested options, assign dflts */
128 int (*demand_conf)(); /* Configure interface for demand-dial */
131 /* Table of pointers to supported protocols */
132 extern struct protent *protocols[];
138 /* Procedures exported from main.c. */
139 void die __P((int)); /* Cleanup and exit */
140 void quit __P((void)); /* like die(1) */
141 void novm __P((char *)); /* Say we ran out of memory, and die */
142 void timeout __P((void (*func)(), caddr_t arg, int t));
143 /* Call func(arg) after t seconds */
144 void untimeout __P((void (*func)(), caddr_t arg));
145 /* Cancel call to func(arg) */
146 int run_program __P((char *prog, char **args, int must_exist));
147 /* Run program prog with args in child */
148 void demuxprotrej __P((int, int));
149 /* Demultiplex a Protocol-Reject */
150 void format_packet __P((u_char *, int, void (*) (void *, char *, ...),
151 void *)); /* Format a packet in human-readable form */
152 void log_packet __P((u_char *, int, char *));
153 /* Format a packet and log it with syslog */
154 void print_string __P((char *, int, void (*) (void *, char *, ...),
155 void *)); /* Format a string for output */
157 /* Procedures exported from auth.c */
158 void link_required __P((int)); /* we are starting to use the link */
159 void link_terminated __P((int)); /* we are finished with the link */
160 void link_down __P((int)); /* the LCP layer has left the Opened state */
161 void link_established __P((int)); /* the link is up; authenticate now */
162 void np_up __P((int, int)); /* a network protocol has come up */
163 void np_down __P((int, int)); /* a network protocol has gone down */
164 void np_finished __P((int, int)); /* a network protocol no longer needs link */
165 void auth_peer_fail __P((int, int));
166 /* peer failed to authenticate itself */
167 void auth_peer_success __P((int, int));
168 /* peer successfully authenticated itself */
169 void auth_withpeer_fail __P((int, int));
170 /* we failed to authenticate ourselves */
171 void auth_withpeer_success __P((int, int));
172 /* we successfully authenticated ourselves */
173 void auth_check_options __P((void));
174 /* check authentication options supplied */
175 int check_passwd __P((int, char *, int, char *, int, char **, int *));
176 /* Check peer-supplied username/password */
177 int get_secret __P((int, char *, char *, char *, int *, int));
178 /* get "secret" for chap */
179 int auth_ip_addr __P((int, u_int32_t));
180 /* check if IP address is authorized */
181 int bad_ip_adrs __P((u_int32_t));
182 /* check if IP address is unreasonable */
183 void check_access __P((FILE *, char *));
184 /* check permissions on secrets file */
186 /* Procedures exported from demand.c */
187 void demand_conf __P((void)); /* config interface(s) for demand-dial */
188 void demand_block __P((void)); /* set all NPs to queue up packets */
189 void demand_unblock __P((void)); /* set all NPs to pass packets */
190 void demand_discard __P((void)); /* set all NPs to discard packets */
191 void demand_rexmit __P((int)); /* retransmit saved frames for an NP */
192 int loop_chars __P((unsigned char *, int)); /* process chars from loopback */
193 int loop_frame __P((unsigned char *, int)); /* process frame from loopback */
195 /* Procedures exported from sys-*.c */
196 void sys_init __P((void)); /* Do system-dependent initialization */
197 void sys_cleanup __P((void)); /* Restore system state before exiting */
198 void sys_check_options __P((void)); /* Check options specified */
199 void sys_close __P((void)); /* Clean up in a child before execing */
200 void note_debug_level __P((void)); /* Note change in debug level */
201 int ppp_available __P((void)); /* Test whether ppp kernel support exists */
202 void open_ppp_loopback __P((void)); /* Open loopback for demand-dialling */
203 void establish_ppp __P((int)); /* Turn serial port into a ppp interface */
204 void restore_loop __P((void)); /* Transfer ppp unit back to loopback */
205 void disestablish_ppp __P((int)); /* Restore port to normal operation */
206 void clean_check __P((void)); /* Check if line was 8-bit clean */
207 void set_up_tty __P((int, int)); /* Set up port's speed, parameters, etc. */
208 void restore_tty __P((int)); /* Restore port's original parameters */
209 void setdtr __P((int, int)); /* Raise or lower port's DTR line */
210 void output __P((int, u_char *, int)); /* Output a PPP packet */
211 void wait_input __P((struct timeval *));
212 /* Wait for input, with timeout */
213 void wait_loop_output __P((struct timeval *));
214 /* Wait for pkt from loopback, with timeout */
215 void wait_time __P((struct timeval *)); /* Wait for given length of time */
216 int read_packet __P((u_char *)); /* Read PPP packet */
217 int get_loop_output __P((void)); /* Read pkts from loopback */
218 void ppp_send_config __P((int, int, u_int32_t, int, int));
219 /* Configure i/f transmit parameters */
220 void ppp_set_xaccm __P((int, ext_accm));
221 /* Set extended transmit ACCM */
222 void ppp_recv_config __P((int, int, u_int32_t, int, int));
223 /* Configure i/f receive parameters */
224 int ccp_test __P((int, u_char *, int, int));
225 /* Test support for compression scheme */
226 void ccp_flags_set __P((int, int, int));
227 /* Set kernel CCP state */
228 int ccp_fatal_error __P((int)); /* Test for fatal decomp error in kernel */
229 int get_idle_time __P((int, struct ppp_idle *));
230 /* Find out how long link has been idle */
231 int sifvjcomp __P((int, int, int, int));
232 /* Configure VJ TCP header compression */
233 int sifup __P((int)); /* Configure i/f up (for IP) */
234 int sifnpmode __P((int u, int proto, enum NPmode mode));
235 /* Set mode for handling packets for proto */
236 int sifdown __P((int)); /* Configure i/f down (for IP) */
237 int sifaddr __P((int, u_int32_t, u_int32_t, u_int32_t));
238 /* Configure IP addresses for i/f */
239 int cifaddr __P((int, u_int32_t, u_int32_t));
240 /* Reset i/f IP addresses */
241 int sifdefaultroute __P((int, u_int32_t));
242 /* Create default route through i/f */
243 int cifdefaultroute __P((int, u_int32_t));
244 /* Delete default route through i/f */
245 int sifproxyarp __P((int, u_int32_t));
246 /* Add proxy ARP entry for peer */
247 int cifproxyarp __P((int, u_int32_t));
248 /* Delete proxy ARP entry for peer */
249 u_int32_t GetMask __P((u_int32_t)); /* Get appropriate netmask for address */
250 int lock __P((char *)); /* Create lock file for device */
251 void unlock __P((void)); /* Delete previously-created lock file */
252 int daemon __P((int, int)); /* Detach us from terminal session */
253 int logwtmp __P((char *, char *, char *));
254 /* Write entry to wtmp file */
255 int set_filters __P((struct bpf_program *pass, struct bpf_program *active));
256 /* Set filter programs in kernel */
258 /* Procedures exported from options.c */
259 int parse_args __P((int argc, char **argv));
260 /* Parse options from arguments given */
261 void usage __P((void)); /* Print a usage message */
262 int options_from_file __P((char *filename, int must_exist, int check_prot));
263 /* Parse options from an options file */
264 int options_from_user __P((void)); /* Parse options from user's .ppprc */
265 int options_for_tty __P((void)); /* Parse options from /etc/ppp/options.tty */
266 int getword __P((FILE *f, char *word, int *newlinep, char *filename));
267 /* Read a word from a file */
270 * Inline versions of get/put char/short/long.
271 * Pointer is advanced; we assume that both arguments
272 * are lvalues and will already be in registers.
273 * cp MUST be u_char *.
275 #define GETCHAR(c, cp) { \
278 #define PUTCHAR(c, cp) { \
279 *(cp)++ = (u_char) (c); \
283 #define GETSHORT(s, cp) { \
284 (s) = *(cp)++ << 8; \
287 #define PUTSHORT(s, cp) { \
288 *(cp)++ = (u_char) ((s) >> 8); \
289 *(cp)++ = (u_char) (s); \
292 #define GETLONG(l, cp) { \
293 (l) = *(cp)++ << 8; \
294 (l) |= *(cp)++; (l) <<= 8; \
295 (l) |= *(cp)++; (l) <<= 8; \
298 #define PUTLONG(l, cp) { \
299 *(cp)++ = (u_char) ((l) >> 24); \
300 *(cp)++ = (u_char) ((l) >> 16); \
301 *(cp)++ = (u_char) ((l) >> 8); \
302 *(cp)++ = (u_char) (l); \
305 #define INCPTR(n, cp) ((cp) += (n))
306 #define DECPTR(n, cp) ((cp) -= (n))
314 * System dependent definitions for user-level 4.3BSD UNIX implementation.
317 #define DEMUXPROTREJ(u, p) demuxprotrej(u, p)
319 #define TIMEOUT(r, f, t) timeout((r), (f), (t))
320 #define UNTIMEOUT(r, f) untimeout((r), (f))
322 #define BCOPY(s, d, l) memcpy(d, s, l)
323 #define BZERO(s, n) memset(s, 0, n)
324 #define EXIT(u) quit()
326 #define PRINTMSG(m, l) { m[l] = '\0'; syslog(LOG_INFO, "Remote message: %s", m); }
329 * MAKEHEADER - Add Header fields to a packet.
331 #define MAKEHEADER(p, t) { \
332 PUTCHAR(PPP_ALLSTATIONS, p); \
333 PUTCHAR(PPP_UI, p); \
346 #ifndef LOG_PPP /* we use LOG_LOCAL2 for syslog by default */
347 #if defined(DEBUGMAIN) || defined(DEBUGFSM) || defined(DEBUGSYS) \
348 || defined(DEBUGLCP) || defined(DEBUGIPCP) || defined(DEBUGUPAP) \
349 || defined(DEBUGCHAP) || defined(DEBUG)
350 #define LOG_PPP LOG_LOCAL2
352 #define LOG_PPP LOG_DAEMON
357 #define MAINDEBUG(x) if (debug) syslog x
363 #define SYSDEBUG(x) if (debug) syslog x
369 #define FSMDEBUG(x) if (debug) syslog x
375 #define LCPDEBUG(x) if (debug) syslog x
381 #define IPCPDEBUG(x) if (debug) syslog x
387 #define UPAPDEBUG(x) if (debug) syslog x
393 #define CHAPDEBUG(x) if (debug) syslog x
399 #if defined(sun) || defined(SYSV) || defined(POSIX_SOURCE)
403 #endif /* defined(sun) || defined(SYSV) || defined(POSIX_SOURCE) */
407 #define MIN(a, b) ((a) < (b)? (a): (b))
410 #define MAX(a, b) ((a) > (b)? (a): (b))
413 #endif /* __PPP_H__ */