2 * options.c - handles option processing for PPP.
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.
21 static char rcsid[] = "$Id: options.c,v 1.19.2.1 1995/06/01 07:01:33 paulus Exp $";
34 #include <sys/types.h>
36 #include <netinet/in.h>
39 #include "pathnames.h"
40 #include "patchlevel.h"
48 #include <net/ppp-comp.h>
53 #if defined(ultrix) || defined(NeXT)
54 char *strdup __P((char *));
58 #define GIDSET_TYPE gid_t
62 * Option variables and default values.
64 int debug = 0; /* Debug flag */
65 int kdebugflag = 0; /* Tell kernel to print debug messages */
66 int default_device = 1; /* Using /dev/tty or equivalent */
67 char devnam[MAXPATHLEN] = "/dev/tty"; /* Device name */
68 int crtscts = 0; /* Use hardware flow control */
69 int modem = 1; /* Use modem control lines */
70 int inspeed = 0; /* Input/Output speed requested */
71 u_int32_t netmask = 0; /* IP netmask to set on interface */
72 int lockflag = 0; /* Create lock file to lock the serial dev */
73 int nodetach = 0; /* Don't detach from controlling tty */
74 char *connector = NULL; /* Script to establish physical link */
75 char *disconnector = NULL; /* Script to disestablish physical link */
76 char user[MAXNAMELEN]; /* Username for PAP */
77 char passwd[MAXSECRETLEN]; /* Password for PAP */
78 int auth_required = 0; /* Peer is required to authenticate */
79 int defaultroute = 0; /* assign default route through interface */
80 int proxyarp = 0; /* Set up proxy ARP entry for peer */
81 int persist = 0; /* Reopen link after it goes down */
82 int uselogin = 0; /* Use /etc/passwd for checking PAP */
83 int lcp_echo_interval = 0; /* Interval between LCP echo-requests */
84 int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */
85 char our_name[MAXNAMELEN]; /* Our name for authentication purposes */
86 char remote_name[MAXNAMELEN]; /* Peer's name for authentication */
87 int usehostname = 0; /* Use hostname for our_name */
88 int disable_defaultip = 0; /* Don't use hostname for default IP adrs */
89 int demand = 0; /* do dial-on-demand */
90 char *ipparam = NULL; /* Extra parameter for ip up/down scripts */
91 int cryptpap; /* Passwords in pap-secrets are encrypted */
92 int idle_time_limit = 0; /* Disconnect if idle for this many seconds */
93 int holdoff = 30; /* # seconds to pause before reconnecting */
98 static int setdebug __P((void));
99 static int setkdebug __P((char **));
100 static int setpassive __P((void));
101 static int setsilent __P((void));
102 static int noopt __P((void));
103 static int setnovj __P((void));
104 static int setnovjccomp __P((void));
105 static int setvjslots __P((char **));
106 static int reqpap __P((void));
107 static int nopap __P((void));
108 static int setupapfile __P((char **));
109 static int nochap __P((void));
110 static int reqchap __P((void));
111 static int setspeed __P((char *));
112 static int noaccomp __P((void));
113 static int noasyncmap __P((void));
114 static int noipaddr __P((void));
115 static int nomagicnumber __P((void));
116 static int setasyncmap __P((char **));
117 static int setescape __P((char **));
118 static int setmru __P((char **));
119 static int setmtu __P((char **));
120 static int nomru __P((void));
121 static int nopcomp __P((void));
122 static int setconnector __P((char **));
123 static int setdisconnector __P((char **));
124 static int setdomain __P((char **));
125 static int setnetmask __P((char **));
126 static int setcrtscts __P((void));
127 static int setnocrtscts __P((void));
128 static int setxonxoff __P((void));
129 static int setnodetach __P((void));
130 static int setmodem __P((void));
131 static int setlocal __P((void));
132 static int setlock __P((void));
133 static int setname __P((char **));
134 static int setuser __P((char **));
135 static int setremote __P((char **));
136 static int setauth __P((void));
137 static int readfile __P((char **));
138 static int setdefaultroute __P((void));
139 static int setnodefaultroute __P((void));
140 static int setproxyarp __P((void));
141 static int setnoproxyarp __P((void));
142 static int setpersist __P((void));
143 static int setdologin __P((void));
144 static int setusehostname __P((void));
145 static int setnoipdflt __P((void));
146 static int setlcptimeout __P((char **));
147 static int setlcpterm __P((char **));
148 static int setlcpconf __P((char **));
149 static int setlcpfails __P((char **));
150 static int setipcptimeout __P((char **));
151 static int setipcpterm __P((char **));
152 static int setipcpconf __P((char **));
153 static int setipcpfails __P((char **));
154 static int setpaptimeout __P((char **));
155 static int setpapreqs __P((char **));
156 static int setchaptimeout __P((char **));
157 static int setchapchal __P((char **));
158 static int setchapintv __P((char **));
159 static int setipcpaccl __P((void));
160 static int setipcpaccr __P((void));
161 static int setlcpechointv __P((char **));
162 static int setlcpechofails __P((char **));
163 static int setbsdcomp __P((char **));
164 static int setnobsdcomp __P((void));
165 static int setdemand __P((void));
166 static int setipparam __P((char **));
167 static int setpapcrypt __P((void));
168 static int setidle __P((char **));
169 static int setholdoff __P((char **));
171 static int number_option __P((char *, long *, int));
172 static int readable __P((int fd));
184 {"-all", 0, noopt}, /* Don't request/allow any options */
185 {"-ac", 0, noaccomp}, /* Disable Address/Control compress */
186 {"-am", 0, noasyncmap}, /* Disable asyncmap negotiation */
187 {"-as", 1, setasyncmap}, /* set the desired async map */
188 {"-d", 0, setdebug}, /* Increase debugging level */
189 {"-detach", 0, setnodetach}, /* don't fork */
190 {"-ip", 0, noipaddr}, /* Disable IP address negotiation */
191 {"-mn", 0, nomagicnumber}, /* Disable magic number negotiation */
192 {"-mru", 0, nomru}, /* Disable mru negotiation */
193 {"-p", 0, setpassive}, /* Set passive mode */
194 {"-pc", 0, nopcomp}, /* Disable protocol field compress */
195 {"+ua", 1, setupapfile}, /* Get PAP user and password from file */
196 {"+pap", 0, reqpap}, /* Require PAP auth from peer */
197 {"-pap", 0, nopap}, /* Don't allow UPAP authentication with peer */
198 {"+chap", 0, reqchap}, /* Require CHAP authentication from peer */
199 {"-chap", 0, nochap}, /* Don't allow CHAP authentication with peer */
200 {"-vj", 0, setnovj}, /* disable VJ compression */
201 {"-vjccomp", 0, setnovjccomp}, /* disable VJ connection-ID compression */
202 {"vj-max-slots", 1, setvjslots}, /* Set maximum VJ header slots */
203 {"asyncmap", 1, setasyncmap}, /* set the desired async map */
204 {"escape", 1, setescape}, /* set chars to escape on transmission */
205 {"connect", 1, setconnector}, /* A program to set up a connection */
206 {"disconnect", 1, setdisconnector}, /* program to disconnect serial dev. */
207 {"crtscts", 0, setcrtscts}, /* set h/w flow control */
208 {"-crtscts", 0, setnocrtscts}, /* clear h/w flow control */
209 {"xonxoff", 0, setxonxoff}, /* set s/w flow control */
210 {"debug", 0, setdebug}, /* Increase debugging level */
211 {"kdebug", 1, setkdebug}, /* Enable kernel-level debugging */
212 {"domain", 1, setdomain}, /* Add given domain name to hostname*/
213 {"mru", 1, setmru}, /* Set MRU value for negotiation */
214 {"mtu", 1, setmtu}, /* Set our MTU */
215 {"netmask", 1, setnetmask}, /* set netmask */
216 {"passive", 0, setpassive}, /* Set passive mode */
217 {"silent", 0, setsilent}, /* Set silent mode */
218 {"modem", 0, setmodem}, /* Use modem control lines */
219 {"local", 0, setlocal}, /* Don't use modem control lines */
220 {"lock", 0, setlock}, /* Lock serial device (with lock file) */
221 {"name", 1, setname}, /* Set local name for authentication */
222 {"user", 1, setuser}, /* Set username for PAP auth with peer */
223 {"usehostname", 0, setusehostname}, /* Must use hostname for auth. */
224 {"remotename", 1, setremote}, /* Set remote name for authentication */
225 {"auth", 0, setauth}, /* Require authentication from peer */
226 {"file", 1, readfile}, /* Take options from a file */
227 {"defaultroute", 0, setdefaultroute}, /* Add default route */
228 {"-defaultroute", 0, setnodefaultroute}, /* disable defaultroute option */
229 {"proxyarp", 0, setproxyarp}, /* Add proxy ARP entry */
230 {"-proxyarp", 0, setnoproxyarp}, /* disable proxyarp option */
231 {"persist", 0, setpersist}, /* Keep on reopening connection after close */
232 {"demand", 0, setdemand}, /* Dial on demand */
233 {"login", 0, setdologin}, /* Use system password database for UPAP */
234 {"noipdefault", 0, setnoipdflt}, /* Don't use name for default IP adrs */
235 {"lcp-echo-failure", 1, setlcpechofails}, /* consecutive echo failures */
236 {"lcp-echo-interval", 1, setlcpechointv}, /* time for lcp echo events */
237 {"lcp-restart", 1, setlcptimeout}, /* Set timeout for LCP */
238 {"lcp-max-terminate", 1, setlcpterm}, /* Set max #xmits for term-reqs */
239 {"lcp-max-configure", 1, setlcpconf}, /* Set max #xmits for conf-reqs */
240 {"lcp-max-failure", 1, setlcpfails}, /* Set max #conf-naks for LCP */
241 {"ipcp-restart", 1, setipcptimeout}, /* Set timeout for IPCP */
242 {"ipcp-max-terminate", 1, setipcpterm}, /* Set max #xmits for term-reqs */
243 {"ipcp-max-configure", 1, setipcpconf}, /* Set max #xmits for conf-reqs */
244 {"ipcp-max-failure", 1, setipcpfails}, /* Set max #conf-naks for IPCP */
245 {"pap-restart", 1, setpaptimeout}, /* Set timeout for UPAP */
246 {"pap-max-authreq", 1, setpapreqs}, /* Set max #xmits for auth-reqs */
247 {"chap-restart", 1, setchaptimeout}, /* Set timeout for CHAP */
248 {"chap-max-challenge", 1, setchapchal}, /* Set max #xmits for challenge */
249 {"chap-interval", 1, setchapintv}, /* Set interval for rechallenge */
250 {"ipcp-accept-local", 0, setipcpaccl}, /* Accept peer's address for us */
251 {"ipcp-accept-remote", 0, setipcpaccr}, /* Accept peer's address for it */
252 {"bsdcomp", 1, setbsdcomp}, /* request BSD-Compress */
253 {"-bsdcomp", 0, setnobsdcomp}, /* don't allow BSD-Compress */
254 {"ipparam", 1, setipparam}, /* set ip script parameter */
255 {"papcrypt", 0, setpapcrypt}, /* PAP passwords encrypted */
256 {"idle", 1, setidle}, /* idle time limit (seconds) */
257 {"holdoff", 1, setholdoff}, /* set holdoff time (seconds) */
262 #ifndef IMPLEMENTATION
263 #define IMPLEMENTATION ""
266 static char *usage_string = "\
267 pppd version %s patch level %d%s\n\
268 Usage: %s [ arguments ], where arguments are:\n\
269 <device> Communicate over the named device\n\
270 <speed> Set the baud rate to <speed>\n\
271 <loc>:<rem> Set the local and/or remote interface IP\n\
272 addresses. Either one may be omitted.\n\
273 asyncmap <n> Set the desired async map to hex <n>\n\
274 auth Require authentication from peer\n\
275 connect <p> Invoke shell command <p> to set up the serial line\n\
276 crtscts Use hardware RTS/CTS flow control\n\
277 defaultroute Add default route through interface\n\
278 file <f> Take options from file <f>\n\
279 modem Use modem control lines\n\
280 mru <n> Set MRU value to <n> for negotiation\n\
281 netmask <n> Set interface netmask to <n>\n\
282 See pppd(8) for more options.\n\
287 * parse_args - parse a string of arguments, from the command
288 * line or from a file.
291 parse_args(argc, argv)
304 * First see if it's a command.
306 for (cmdp = cmds; cmdp->cmd_name; cmdp++)
307 if (!strcmp(arg, cmdp->cmd_name))
310 if (cmdp->cmd_name != NULL) {
311 if (argc < cmdp->num_args) {
312 fprintf(stderr, "Too few parameters for command %s\n", arg);
315 if (!(*cmdp->cmd_func)(argv))
317 argc -= cmdp->num_args;
318 argv += cmdp->num_args;
322 * Maybe a tty name, speed or IP address?
324 if ((ret = setdevname(arg)) == 0
325 && (ret = setspeed(arg)) == 0
326 && (ret = setipaddr(arg)) == 0) {
327 fprintf(stderr, "%s: unrecognized command\n", arg);
331 if (ret < 0) /* error */
339 * usage - print out a message telling how to use the program.
344 fprintf(stderr, usage_string, VERSION, PATCHLEVEL, IMPLEMENTATION,
349 * options_from_file - Read a string of options from a file,
350 * and interpret them.
353 options_from_file(filename, must_exist, check_prot)
362 char args[MAXARGS][MAXWORDLEN];
363 char cmd[MAXWORDLEN];
365 if ((f = fopen(filename, "r")) == NULL) {
366 if (!must_exist && errno == ENOENT)
371 if (check_prot && !readable(fileno(f))) {
372 fprintf(stderr, "%s: access denied\n", filename);
377 while (getword(f, cmd, &newline, filename)) {
379 * First see if it's a command.
381 for (cmdp = cmds; cmdp->cmd_name; cmdp++)
382 if (!strcmp(cmd, cmdp->cmd_name))
385 if (cmdp->cmd_name != NULL) {
386 for (i = 0; i < cmdp->num_args; ++i) {
387 if (!getword(f, args[i], &newline, filename)) {
389 "In file %s: too few parameters for command %s\n",
396 if (!(*cmdp->cmd_func)(argv)) {
403 * Maybe a tty name, speed or IP address?
405 if ((ret = setdevname(cmd)) == 0
406 && (ret = setspeed(cmd)) == 0
407 && (ret = setipaddr(cmd)) == 0) {
408 fprintf(stderr, "In file %s: unrecognized command %s\n",
413 if (ret < 0) /* error */
421 * options_from_user - See if the use has a ~/.ppprc file,
422 * and if so, interpret options from it.
427 char *user, *path, *file;
431 pw = getpwuid(getuid());
432 if (pw == NULL || (user = pw->pw_dir) == NULL || user[0] == 0)
434 file = _PATH_USEROPT;
435 path = malloc(strlen(user) + strlen(file) + 2);
437 novm("init file name");
441 ret = options_from_file(path, 0, 1);
447 * options_for_tty - See if an options file exists for the serial
448 * device, and if so, interpret options from it.
456 dev = strrchr(devnam, '/');
461 if (strcmp(dev, "tty") == 0)
462 return 1; /* don't look for /etc/ppp/options.tty */
463 path = malloc(strlen(_PATH_TTYOPT) + strlen(dev) + 1);
465 novm("tty init file name");
466 strcpy(path, _PATH_TTYOPT);
468 ret = options_from_file(path, 0, 0);
474 * readable - check if a file is readable by the real user.
483 GIDSET_TYPE groups[NGROUPS_MAX];
488 if (fstat(fd, &sbuf) != 0)
490 if (sbuf.st_uid == uid)
491 return sbuf.st_mode & S_IRUSR;
492 if (sbuf.st_gid == getgid())
493 return sbuf.st_mode & S_IRGRP;
494 ngroups = getgroups(NGROUPS_MAX, groups);
495 for (i = 0; i < ngroups; ++i)
496 if (sbuf.st_gid == groups[i])
497 return sbuf.st_mode & S_IRGRP;
498 return sbuf.st_mode & S_IROTH;
502 * Read a word from a file.
503 * Words are delimited by white-space or by quotes (").
504 * Quotes, white-space and \ may be escaped with \.
505 * \<newline> is ignored.
508 getword(f, word, newlinep, filename)
523 * First skip white-space and comments
525 while ((c = getc(f)) != EOF) {
528 * \<newline> is ignored; \ followed by anything else
531 if ((c = getc(f)) == '\n')
538 *newlinep = 1; /* next word starts a line */
540 /* comment - ignore until EOF or \n */
541 while ((c = getc(f)) != EOF && c != '\n')
546 } else if (!isspace(c))
551 * End of file or error - fail
563 * Is this character escaped by \ ?
567 --len; /* ignore \<newline> */
568 else if (c == '"' || isspace(c) || c == '\\')
569 word[len-1] = c; /* put special char in word */
571 if (len < MAXWORDLEN-1)
576 } else if (c == '"') {
578 } else if (!quoted && (isspace(c) || c == '#')) {
582 if (len < MAXWORDLEN-1)
588 if ((c = getc(f)) == EOF)
597 if (len >= MAXWORDLEN) {
598 word[MAXWORDLEN-1] = 0;
599 fprintf(stderr, "%s: warning: word in file %s too long (%.20s...)\n",
600 progname, filename, word);
608 * number_option - parse a numeric parameter for an option
611 number_option(str, valp, base)
618 *valp = strtol(str, &ptr, base);
620 fprintf(stderr, "%s: invalid number: %s\n", progname, str);
628 * int_option - like number_option, but valp is int *,
629 * the base is assumed to be 0, and *valp is not changed
630 * if there is an error.
633 int_option(str, valp)
639 if (!number_option(str, &v, 0))
647 * The following procedures execute commands.
651 * readfile - take commands from a file.
657 return options_from_file(*argv, 1, 1);
661 * setdebug - Set debug (command line argument).
671 * setkdebug - Set kernel debugging level.
677 return int_option(*argv, &kdebugflag);
681 * noopt - Disable all options.
686 BZERO((char *) &lcp_wantoptions[0], sizeof (struct lcp_options));
687 BZERO((char *) &lcp_allowoptions[0], sizeof (struct lcp_options));
688 BZERO((char *) &ipcp_wantoptions[0], sizeof (struct ipcp_options));
689 BZERO((char *) &ipcp_allowoptions[0], sizeof (struct ipcp_options));
694 * noaccomp - Disable Address/Control field compression negotiation.
699 lcp_wantoptions[0].neg_accompression = 0;
700 lcp_allowoptions[0].neg_accompression = 0;
706 * noasyncmap - Disable async map negotiation.
711 lcp_wantoptions[0].neg_asyncmap = 0;
712 lcp_allowoptions[0].neg_asyncmap = 0;
718 * noipaddr - Disable IP address negotiation.
723 ipcp_wantoptions[0].neg_addr = 0;
724 ipcp_allowoptions[0].neg_addr = 0;
730 * nomagicnumber - Disable magic number negotiation.
735 lcp_wantoptions[0].neg_magicnumber = 0;
736 lcp_allowoptions[0].neg_magicnumber = 0;
742 * nomru - Disable mru negotiation.
747 lcp_wantoptions[0].neg_mru = 0;
748 lcp_allowoptions[0].neg_mru = 0;
754 * setmru - Set MRU for negotiation.
762 if (!number_option(*argv, &mru, 0))
764 lcp_wantoptions[0].mru = mru;
765 lcp_wantoptions[0].neg_mru = 1;
771 * setmru - Set the largest MTU we'll use.
779 if (!number_option(*argv, &mtu, 0))
781 if (mtu < MINMRU || mtu > MAXMRU) {
782 fprintf(stderr, "mtu option value of %ld is too %s\n", mtu,
783 (mtu < MINMRU? "small": "large"));
786 lcp_allowoptions[0].mru = mtu;
792 * nopcomp - Disable Protocol field compression negotiation.
797 lcp_wantoptions[0].neg_pcompression = 0;
798 lcp_allowoptions[0].neg_pcompression = 0;
804 * setpassive - Set passive mode (don't give up if we time out sending
805 * LCP configure-requests).
810 lcp_wantoptions[0].passive = 1;
816 * setsilent - Set silent mode (don't start sending LCP configure-requests
817 * until we get one from the peer).
822 lcp_wantoptions[0].silent = 1;
828 * nopap - Disable PAP authentication with peer.
833 lcp_allowoptions[0].neg_upap = 0;
839 * reqpap - Require PAP authentication from peer.
844 lcp_wantoptions[0].neg_upap = 1;
851 * setupapfile - specifies UPAP info for authenticating with peer.
860 lcp_allowoptions[0].neg_upap = 1;
862 /* open user info file */
863 if ((ufile = fopen(*argv, "r")) == NULL) {
864 fprintf(stderr, "unable to open user login data file %s\n", *argv);
867 if (!readable(fileno(ufile))) {
868 fprintf(stderr, "%s: access denied\n", *argv);
871 check_access(ufile, *argv);
874 if (fgets(user, MAXNAMELEN - 1, ufile) == NULL
875 || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){
876 fprintf(stderr, "Unable to read user login data file %s.\n", *argv);
881 /* get rid of newlines */
883 if (l > 0 && user[l-1] == '\n')
886 if (l > 0 && passwd[l-1] == '\n')
894 * nochap - Disable CHAP authentication with peer.
899 lcp_allowoptions[0].neg_chap = 0;
905 * reqchap - Require CHAP authentication from peer.
910 lcp_wantoptions[0].neg_chap = 1;
917 * setnovj - disable vj compression
922 ipcp_wantoptions[0].neg_vj = 0;
923 ipcp_allowoptions[0].neg_vj = 0;
929 * setnovjccomp - disable VJ connection-ID compression
934 ipcp_wantoptions[0].cflag = 0;
935 ipcp_allowoptions[0].cflag = 0;
941 * setvjslots - set maximum number of connection slots for VJ compression
949 if (!int_option(*argv, &value))
951 if (value < 2 || value > 16) {
952 fprintf(stderr, "pppd: vj-max-slots value must be between 2 and 16\n");
955 ipcp_wantoptions [0].maxslotindex =
956 ipcp_allowoptions[0].maxslotindex = value - 1;
962 * setconnector - Set a program to connect to a serial line
968 connector = strdup(*argv);
969 if (connector == NULL)
970 novm("connector string");
976 * setdisconnector - Set a program to disconnect from the serial line
979 setdisconnector(argv)
982 disconnector = strdup(*argv);
983 if (disconnector == NULL)
984 novm("disconnector string");
991 * setdomain - Set domain name to append to hostname
997 strncat(hostname, *argv, MAXNAMELEN - strlen(hostname));
998 hostname[MAXNAMELEN-1] = 0;
1004 * setasyncmap - add bits to asyncmap (what we request peer to escape).
1012 if (!number_option(*argv, &asyncmap, 16))
1014 lcp_wantoptions[0].asyncmap |= asyncmap;
1015 lcp_wantoptions[0].neg_asyncmap = 1;
1021 * setescape - add chars to the set we escape on transmission.
1033 n = strtol(p, &endp, 16);
1035 fprintf(stderr, "%s: invalid hex number: %s\n", progname, p);
1039 if (n < 0 || 0x20 <= n && n <= 0x3F || n == 0x5E || n > 0xFF) {
1040 fprintf(stderr, "%s: can't escape character 0x%x\n", progname, n);
1043 xmit_accm[0][n >> 5] |= 1 << (n & 0x1F);
1044 while (*p == ',' || *p == ' ')
1052 * setspeed - Set the speed.
1061 spd = strtol(arg, &ptr, 0);
1062 if (ptr == arg || *ptr != 0 || spd == 0)
1070 * setdevname - Set the device name.
1076 struct stat statbuf;
1077 char *tty, *ttyname();
1078 char dev[MAXPATHLEN];
1080 if (strncmp("/dev/", cp, 5) != 0) {
1081 strcpy(dev, "/dev/");
1082 strncat(dev, cp, MAXPATHLEN - 5);
1083 dev[MAXPATHLEN-1] = 0;
1088 * Check if there is a device by this name.
1090 if (stat(cp, &statbuf) < 0) {
1091 if (errno == ENOENT)
1093 syslog(LOG_ERR, cp);
1097 (void) strncpy(devnam, cp, MAXPATHLEN);
1098 devnam[MAXPATHLEN-1] = 0;
1099 default_device = FALSE;
1106 * setipaddr - Set the IP address
1114 u_int32_t local, remote;
1115 ipcp_options *wo = &ipcp_wantoptions[0];
1118 * IP address pair separated by ":".
1120 if ((colon = strchr(arg, ':')) == NULL)
1124 * If colon first character, then no local addr.
1128 if ((local = inet_addr(arg)) == -1) {
1129 if ((hp = gethostbyname(arg)) == NULL) {
1130 fprintf(stderr, "unknown host: %s\n", arg);
1133 local = *(u_int32_t *)hp->h_addr;
1134 if (our_name[0] == 0) {
1135 strncpy(our_name, arg, MAXNAMELEN);
1136 our_name[MAXNAMELEN-1] = 0;
1140 if (bad_ip_adrs(local)) {
1141 fprintf(stderr, "bad local IP address %s\n", ip_ntoa(local));
1145 wo->ouraddr = local;
1150 * If colon last character, then no remote addr.
1152 if (*++colon != '\0') {
1153 if ((remote = inet_addr(colon)) == -1) {
1154 if ((hp = gethostbyname(colon)) == NULL) {
1155 fprintf(stderr, "unknown host: %s\n", colon);
1158 remote = *(u_int32_t *)hp->h_addr;
1159 if (remote_name[0] == 0) {
1160 strncpy(remote_name, colon, MAXNAMELEN);
1161 remote_name[MAXNAMELEN-1] = 0;
1165 if (bad_ip_adrs(remote)) {
1166 fprintf(stderr, "bad remote IP address %s\n", ip_ntoa(remote));
1170 wo->hisaddr = remote;
1178 * setnoipdflt - disable setipdefault()
1183 disable_defaultip = 1;
1189 * setipcpaccl - accept peer's idea of our address
1194 ipcp_wantoptions[0].accept_local = 1;
1200 * setipcpaccr - accept peer's idea of its address
1205 ipcp_wantoptions[0].accept_remote = 1;
1211 * setipdefault - default our local IP address based on our hostname.
1218 ipcp_options *wo = &ipcp_wantoptions[0];
1221 * If local IP address already given, don't bother.
1223 if (wo->ouraddr != 0 || disable_defaultip)
1227 * Look up our hostname (possibly with domain name appended)
1228 * and take the first IP address as our local IP address.
1229 * If there isn't an IP address for our hostname, too bad.
1231 wo->accept_local = 1; /* don't insist on this default value */
1232 if ((hp = gethostbyname(hostname)) == NULL)
1234 local = *(u_int32_t *)hp->h_addr;
1235 if (local != 0 && !bad_ip_adrs(local))
1236 wo->ouraddr = local;
1241 * setnetmask - set the netmask to be used on the interface.
1249 if ((mask = inet_addr(*argv)) == -1 || (netmask & ~mask) != 0) {
1250 fprintf(stderr, "Invalid netmask %s\n", *argv);
1325 if (our_name[0] == 0) {
1326 strncpy(our_name, argv[0], MAXNAMELEN);
1327 our_name[MAXNAMELEN-1] = 0;
1336 strncpy(user, argv[0], MAXNAMELEN);
1337 user[MAXNAMELEN-1] = 0;
1345 strncpy(remote_name, argv[0], MAXNAMELEN);
1346 remote_name[MAXNAMELEN-1] = 0;
1360 if (!ipcp_allowoptions[0].default_route) {
1361 fprintf(stderr, "%s: defaultroute option is disabled\n", progname);
1364 ipcp_wantoptions[0].default_route = 1;
1371 ipcp_allowoptions[0].default_route = 0;
1372 ipcp_wantoptions[0].default_route = 0;
1379 if (!ipcp_allowoptions[0].proxy_arp) {
1380 fprintf(stderr, "%s: proxyarp option is disabled\n", progname);
1383 ipcp_wantoptions[0].proxy_arp = 1;
1390 ipcp_wantoptions[0].proxy_arp = 0;
1391 ipcp_allowoptions[0].proxy_arp = 0;
1410 * Functions to set the echo interval for modem-less monitors
1414 setlcpechointv(argv)
1417 return int_option(*argv, &lcp_echo_interval);
1421 setlcpechofails(argv)
1424 return int_option(*argv, &lcp_echo_fails);
1428 * Functions to set timeouts, max transmits, etc.
1434 return int_option(*argv, &lcp_fsm[0].timeouttime);
1441 return int_option(*argv, &lcp_fsm[0].maxtermtransmits);
1448 return int_option(*argv, &lcp_fsm[0].maxconfreqtransmits);
1455 return int_option(*argv, &lcp_fsm[0].maxnakloops);
1459 setipcptimeout(argv)
1462 return int_option(*argv, &ipcp_fsm[0].timeouttime);
1469 return int_option(*argv, &ipcp_fsm[0].maxtermtransmits);
1476 return int_option(*argv, &ipcp_fsm[0].maxconfreqtransmits);
1483 return int_option(*argv, &lcp_fsm[0].maxnakloops);
1490 return int_option(*argv, &upap[0].us_timeouttime);
1497 return int_option(*argv, &upap[0].us_maxtransmits);
1501 setchaptimeout(argv)
1504 return int_option(*argv, &chap[0].timeouttime);
1511 return int_option(*argv, &chap[0].max_transmits);
1518 return int_option(*argv, &chap[0].chal_interval);
1529 abits = rbits = strtol(str, &endp, 0);
1530 if (endp != str && *endp == ',') {
1532 abits = strtol(str, &endp, 0);
1534 if (*endp != 0 || endp == str) {
1535 fprintf(stderr, "%s: invalid argument format for bsdcomp option\n",
1539 if (rbits != 0 && (rbits < BSD_MIN_BITS || rbits > BSD_MAX_BITS)
1540 || abits != 0 && (abits < BSD_MIN_BITS || abits > BSD_MAX_BITS)) {
1541 fprintf(stderr, "%s: bsdcomp option values must be 0 or %d .. %d\n",
1542 progname, BSD_MIN_BITS, BSD_MAX_BITS);
1546 ccp_wantoptions[0].bsd_compress = 1;
1547 ccp_wantoptions[0].bsd_bits = rbits;
1549 ccp_wantoptions[0].bsd_compress = 0;
1551 ccp_allowoptions[0].bsd_compress = 1;
1552 ccp_allowoptions[0].bsd_bits = abits;
1554 ccp_allowoptions[0].bsd_compress = 0;
1561 ccp_wantoptions[0].bsd_compress = 0;
1562 ccp_allowoptions[0].bsd_compress = 0;
1570 ipparam = strdup(*argv);
1571 if (ipparam == NULL)
1572 novm("ipparam string");
1588 return int_option(*argv, &idle_time_limit);
1595 return int_option(*argv, &holdoff);