/* * options.c - handles option processing for PPP. * * Copyright (c) 1989 Carnegie Mellon University. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by Carnegie Mellon University. The name of the * University may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint static char rcsid[] = "$Id: options.c,v 1.10 1994/05/27 00:43:34 paulus Exp $"; #endif #include #include #include #include #define devname STDLIB_devname #include #undef devname #include #include #include #include #include #include #include #include #include "ppp.h" #include "pppd.h" #include "pathnames.h" #include "patchlevel.h" #include "fsm.h" #include "lcp.h" #include "ipcp.h" #include "upap.h" #include "chap.h" #define FALSE 0 #define TRUE 1 #ifdef ultrix char *strdup __ARGS((char *)); #endif #ifndef GIDSET_TYPE #define GIDSET_TYPE gid_t #endif /* * Prototypes */ static int setdebug __ARGS((void)); static int setkdebug __ARGS((char **)); static int setpassive __ARGS((void)); static int setsilent __ARGS((void)); static int noopt __ARGS((void)); static int setnovj __ARGS((void)); static int setnovjccomp __ARGS((void)); static int setvjslots __ARGS((char **)); static int reqpap __ARGS((void)); static int nopap __ARGS((void)); static int setupapfile __ARGS((char **)); static int nochap __ARGS((void)); static int reqchap __ARGS((void)); static int setspeed __ARGS((char *)); static int noaccomp __ARGS((void)); static int noasyncmap __ARGS((void)); static int noipaddr __ARGS((void)); static int nomagicnumber __ARGS((void)); static int setasyncmap __ARGS((char **)); static int setescape __ARGS((char **)); static int setmru __ARGS((char **)); static int setmtu __ARGS((char **)); static int nomru __ARGS((void)); static int nopcomp __ARGS((void)); static int setconnector __ARGS((char **)); static int setdisconnector __ARGS((char **)); static int setdomain __ARGS((char **)); static int setnetmask __ARGS((char **)); static int setcrtscts __ARGS((void)); static int setxonxoff __ARGS((void)); static int setnodetach __ARGS((void)); static int setmodem __ARGS((void)); static int setlocal __ARGS((void)); static int setlock __ARGS((void)); static int setname __ARGS((char **)); static int setuser __ARGS((char **)); static int setremote __ARGS((char **)); static int setauth __ARGS((void)); static int readfile __ARGS((char **)); static int setdefaultroute __ARGS((void)); static int setproxyarp __ARGS((void)); static int setpersist __ARGS((void)); static int setdologin __ARGS((void)); static int setusehostname __ARGS((void)); static int setnoipdflt __ARGS((void)); static int setlcptimeout __ARGS((char **)); static int setlcpterm __ARGS((char **)); static int setlcpconf __ARGS((char **)); static int setlcpfails __ARGS((char **)); static int setipcptimeout __ARGS((char **)); static int setipcpterm __ARGS((char **)); static int setipcpconf __ARGS((char **)); static int setipcpfails __ARGS((char **)); static int setpaptimeout __ARGS((char **)); static int setpapreqs __ARGS((char **)); static int setchaptimeout __ARGS((char **)); static int setchapchal __ARGS((char **)); static int setchapintv __ARGS((char **)); static int setipcpaccl __ARGS((void)); static int setipcpaccr __ARGS((void)); static int setlcpechointv __ARGS((char **)); static int setlcpechofails __ARGS((char **)); static int number_option __ARGS((char *, long *, int)); static int readable __ARGS((int fd)); /* * Option variables */ extern char *progname; extern int debug; extern int kdebugflag; extern int modem; extern int lockflag; extern int crtscts; extern int nodetach; extern char *connector; extern char *disconnector; extern int inspeed; extern char devname[]; extern int default_device; extern u_long netmask; extern int detach; extern char user[]; extern char passwd[]; extern int auth_required; extern int proxyarp; extern int persist; extern int uselogin; extern u_long lcp_echo_interval; extern u_long lcp_echo_fails; extern char our_name[]; extern char remote_name[]; int usehostname; int disable_defaultip; /* * Valid arguments. */ static struct cmd { char *cmd_name; int num_args; int (*cmd_func)(); } cmds[] = { {"-all", 0, noopt}, /* Don't request/allow any options */ {"-ac", 0, noaccomp}, /* Disable Address/Control compress */ {"-am", 0, noasyncmap}, /* Disable asyncmap negotiation */ {"-as", 1, setasyncmap}, /* set the desired async map */ {"-d", 0, setdebug}, /* Increase debugging level */ {"-detach", 0, setnodetach}, /* don't fork */ {"-ip", 0, noipaddr}, /* Disable IP address negotiation */ {"-mn", 0, nomagicnumber}, /* Disable magic number negotiation */ {"-mru", 0, nomru}, /* Disable mru negotiation */ {"-p", 0, setpassive}, /* Set passive mode */ {"-pc", 0, nopcomp}, /* Disable protocol field compress */ {"+ua", 1, setupapfile}, /* Get PAP user and password from file */ {"+pap", 0, reqpap}, /* Require PAP auth from peer */ {"-pap", 0, nopap}, /* Don't allow UPAP authentication with peer */ {"+chap", 0, reqchap}, /* Require CHAP authentication from peer */ {"-chap", 0, nochap}, /* Don't allow CHAP authentication with peer */ {"-vj", 0, setnovj}, /* disable VJ compression */ {"-vjccomp", 0, setnovjccomp}, /* disable VJ connection-ID compression */ {"vj-max-slots", 1, setvjslots}, /* Set maximum VJ header slots */ {"asyncmap", 1, setasyncmap}, /* set the desired async map */ {"escape", 1, setescape}, /* set chars to escape on transmission */ {"connect", 1, setconnector}, /* A program to set up a connection */ {"disconnect", 1, setdisconnector}, /* program to disconnect serial dev. */ {"crtscts", 0, setcrtscts}, /* set h/w flow control */ {"xonxoff", 0, setxonxoff}, /* set s/w flow control */ {"-crtscts", 0, setxonxoff}, /* another name for xonxoff */ {"debug", 0, setdebug}, /* Increase debugging level */ {"kdebug", 1, setkdebug}, /* Enable kernel-level debugging */ {"domain", 1, setdomain}, /* Add given domain name to hostname*/ {"mru", 1, setmru}, /* Set MRU value for negotiation */ {"mtu", 1, setmtu}, /* Set our MTU */ {"netmask", 1, setnetmask}, /* set netmask */ {"passive", 0, setpassive}, /* Set passive mode */ {"silent", 0, setsilent}, /* Set silent mode */ {"modem", 0, setmodem}, /* Use modem control lines */ {"local", 0, setlocal}, /* Don't use modem control lines */ {"lock", 0, setlock}, /* Lock serial device (with lock file) */ {"name", 1, setname}, /* Set local name for authentication */ {"user", 1, setuser}, /* Set username for PAP auth with peer */ {"usehostname", 0, setusehostname}, /* Must use hostname for auth. */ {"remotename", 1, setremote}, /* Set remote name for authentication */ {"auth", 0, setauth}, /* Require authentication from peer */ {"file", 1, readfile}, /* Take options from a file */ {"defaultroute", 0, setdefaultroute}, /* Add default route */ {"proxyarp", 0, setproxyarp}, /* Add proxy ARP entry */ {"persist", 0, setpersist}, /* Keep on reopening connection after close */ {"login", 0, setdologin}, /* Use system password database for UPAP */ {"noipdefault", 0, setnoipdflt}, /* Don't use name for default IP adrs */ {"lcp-echo-failure", 1, setlcpechofails}, /* consecutive echo failures */ {"lcp-echo-interval", 1, setlcpechointv}, /* time for lcp echo events */ {"lcp-restart", 1, setlcptimeout}, /* Set timeout for LCP */ {"lcp-max-terminate", 1, setlcpterm}, /* Set max #xmits for term-reqs */ {"lcp-max-configure", 1, setlcpconf}, /* Set max #xmits for conf-reqs */ {"lcp-max-failure", 1, setlcpfails}, /* Set max #conf-naks for LCP */ {"ipcp-restart", 1, setipcptimeout}, /* Set timeout for IPCP */ {"ipcp-max-terminate", 1, setipcpterm}, /* Set max #xmits for term-reqs */ {"ipcp-max-configure", 1, setipcpconf}, /* Set max #xmits for conf-reqs */ {"ipcp-max-failure", 1, setipcpfails}, /* Set max #conf-naks for IPCP */ {"pap-restart", 1, setpaptimeout}, /* Set timeout for UPAP */ {"pap-max-authreq", 1, setpapreqs}, /* Set max #xmits for auth-reqs */ {"chap-restart", 1, setchaptimeout}, /* Set timeout for CHAP */ {"chap-max-challenge", 1, setchapchal}, /* Set max #xmits for challenge */ {"chap-interval", 1, setchapintv}, /* Set interval for rechallenge */ {"ipcp-accept-local", 0, setipcpaccl}, /* Accept peer's address for us */ {"ipcp-accept-remote", 0, setipcpaccr}, /* Accept peer's address for it */ {NULL, 0, NULL} }; #ifndef IMPLEMENTATION #define IMPLEMENTATION "" #endif static char *usage_string = "\ pppd version %s patch level %d%s\n\ Usage: %s [ arguments ], where arguments are:\n\ Communicate over the named device\n\ Set the baud rate to \n\ : Set the local and/or remote interface IP\n\ addresses. Either one may be omitted.\n\ asyncmap Set the desired async map to hex \n\ auth Require authentication from peer\n\ connect

Invoke shell command

to set up the serial line\n\ crtscts Use hardware RTS/CTS flow control\n\ defaultroute Add default route through interface\n\ file Take options from file \n\ modem Use modem control lines\n\ mru Set MRU value to for negotiation\n\ netmask Set interface netmask to \n\ See pppd(8) for more options.\n\ "; /* * parse_args - parse a string of arguments, from the command * line or from a file. */ int parse_args(argc, argv) int argc; char **argv; { char *arg, *val; struct cmd *cmdp; int ret; while (argc > 0) { arg = *argv++; --argc; /* * First see if it's a command. */ for (cmdp = cmds; cmdp->cmd_name; cmdp++) if (!strcmp(arg, cmdp->cmd_name)) break; if (cmdp->cmd_name != NULL) { if (argc < cmdp->num_args) { fprintf(stderr, "Too few parameters for command %s\n", arg); return 0; } if (!(*cmdp->cmd_func)(argv)) return 0; argc -= cmdp->num_args; argv += cmdp->num_args; } else { /* * Maybe a tty name, speed or IP address? */ if ((ret = setdevname(arg)) == 0 && (ret = setspeed(arg)) == 0 && (ret = setipaddr(arg)) == 0) { fprintf(stderr, "%s: unrecognized command\n", arg); usage(); return 0; } if (ret < 0) /* error */ return 0; } } return 1; } /* * usage - print out a message telling how to use the program. */ usage() { fprintf(stderr, usage_string, VERSION, PATCHLEVEL, IMPLEMENTATION, progname); } /* * options_from_file - Read a string of options from a file, * and interpret them. */ int options_from_file(filename, must_exist, check_prot) char *filename; int must_exist; int check_prot; { FILE *f; int i, newline, ret; struct cmd *cmdp; char *argv[MAXARGS]; char args[MAXARGS][MAXWORDLEN]; char cmd[MAXWORDLEN]; if ((f = fopen(filename, "r")) == NULL) { if (!must_exist && errno == ENOENT) return 1; perror(filename); return 0; } if (check_prot && !readable(fileno(f))) { fprintf(stderr, "%s: access denied\n", filename); fclose(f); return 0; } while (getword(f, cmd, &newline, filename)) { /* * First see if it's a command. */ for (cmdp = cmds; cmdp->cmd_name; cmdp++) if (!strcmp(cmd, cmdp->cmd_name)) break; if (cmdp->cmd_name != NULL) { for (i = 0; i < cmdp->num_args; ++i) { if (!getword(f, args[i], &newline, filename)) { fprintf(stderr, "In file %s: too few parameters for command %s\n", filename, cmd); fclose(f); return 0; } argv[i] = args[i]; } if (!(*cmdp->cmd_func)(argv)) { fclose(f); return 0; } } else { /* * Maybe a tty name, speed or IP address? */ if ((ret = setdevname(cmd)) == 0 && (ret = setspeed(cmd)) == 0 && (ret = setipaddr(cmd)) == 0) { fprintf(stderr, "In file %s: unrecognized command %s\n", filename, cmd); fclose(f); return 0; } if (ret < 0) /* error */ return 0; } } return 1; } /* * options_from_user - See if the use has a ~/.ppprc file, * and if so, interpret options from it. */ int options_from_user() { char *user, *path, *file; int ret; struct passwd *pw; pw = getpwuid(getuid()); if (pw == NULL || (user = pw->pw_dir) == NULL || user[0] == 0) return 1; file = _PATH_USEROPT; path = malloc(strlen(user) + strlen(file) + 2); if (path == NULL) novm("init file name"); strcpy(path, user); strcat(path, "/"); strcat(path, file); ret = options_from_file(path, 0, 1); free(path); return ret; } /* * options_for_tty - See if an options file exists for the serial * device, and if so, interpret options from it. */ int options_for_tty() { char *dev, *path; int ret; dev = strrchr(devname, '/'); if (dev == NULL) dev = devname; else ++dev; if (strcmp(dev, "tty") == 0) return 1; /* don't look for /etc/ppp/options.tty */ path = malloc(strlen(_PATH_TTYOPT) + strlen(dev) + 1); if (path == NULL) novm("tty init file name"); strcpy(path, _PATH_TTYOPT); strcat(path, dev); ret = options_from_file(path, 0, 0); free(path); return ret; } /* * readable - check if a file is readable by the real user. */ static int readable(fd) int fd; { uid_t uid; int ngroups, i; struct stat sbuf; GIDSET_TYPE groups[NGROUPS_MAX]; uid = getuid(); if (uid == 0) return 1; if (fstat(fd, &sbuf) != 0) return 0; if (sbuf.st_uid == uid) return sbuf.st_mode & S_IRUSR; if (sbuf.st_gid == getgid()) return sbuf.st_mode & S_IRGRP; ngroups = getgroups(NGROUPS_MAX, groups); for (i = 0; i < ngroups; ++i) if (sbuf.st_gid == groups[i]) return sbuf.st_mode & S_IRGRP; return sbuf.st_mode & S_IROTH; } /* * Read a word from a file. * Words are delimited by white-space or by quotes ("). * Quotes, white-space and \ may be escaped with \. * \ is ignored. */ int getword(f, word, newlinep, filename) FILE *f; char *word; int *newlinep; char *filename; { int c, len, escape; int quoted; *newlinep = 0; len = 0; escape = 0; quoted = 0; /* * First skip white-space and comments */ while ((c = getc(f)) != EOF) { if (c == '\\') { /* * \ is ignored; \ followed by anything else * starts a word. */ if ((c = getc(f)) == '\n') continue; word[len++] = '\\'; escape = 1; break; } if (c == '\n') *newlinep = 1; /* next word starts a line */ else if (c == '#') { /* comment - ignore until EOF or \n */ while ((c = getc(f)) != EOF && c != '\n') ; if (c == EOF) break; *newlinep = 1; } else if (!isspace(c)) break; } /* * End of file or error - fail */ if (c == EOF) { if (ferror(f)) { perror(filename); die(1); } return 0; } for (;;) { /* * Is this character escaped by \ ? */ if (escape) { if (c == '\n') --len; /* ignore \ */ else if (c == '"' || isspace(c) || c == '\\') word[len-1] = c; /* put special char in word */ else { if (len < MAXWORDLEN-1) word[len] = c; ++len; } escape = 0; } else if (c == '"') { quoted = !quoted; } else if (!quoted && (isspace(c) || c == '#')) { ungetc(c, f); break; } else { if (len < MAXWORDLEN-1) word[len] = c; ++len; if (c == '\\') escape = 1; } if ((c = getc(f)) == EOF) break; } if (ferror(f)) { perror(filename); die(1); } if (len >= MAXWORDLEN) { word[MAXWORDLEN-1] = 0; fprintf(stderr, "%s: warning: word in file %s too long (%.20s...)\n", progname, filename, word); } else word[len] = 0; return 1; } /* * number_option - parse a numeric parameter for an option */ static int number_option(str, valp, base) char *str; long *valp; int base; { char *ptr; *valp = strtol(str, &ptr, base); if (ptr == str) { fprintf(stderr, "%s: invalid number: %s\n", progname, str); return 0; } return 1; } /* * int_option - like number_option, but valp is int *, * the base is assumed to be 0, and *valp is not changed * if there is an error. */ static int int_option(str, valp) char *str; int *valp; { long v; if (!number_option(str, &v, 0)) return 0; *valp = (int) v; return 1; } /* * The following procedures execute commands. */ /* * readfile - take commands from a file. */ static int readfile(argv) char **argv; { return options_from_file(*argv, 1, 1); } /* * setdebug - Set debug (command line argument). */ static int setdebug() { debug++; return (1); } /* * setkdebug - Set kernel debugging level. */ static int setkdebug(argv) char **argv; { return int_option(*argv, &kdebugflag); } /* * noopt - Disable all options. */ static int noopt() { BZERO((char *) &lcp_wantoptions[0], sizeof (struct lcp_options)); BZERO((char *) &lcp_allowoptions[0], sizeof (struct lcp_options)); BZERO((char *) &ipcp_wantoptions[0], sizeof (struct ipcp_options)); BZERO((char *) &ipcp_allowoptions[0], sizeof (struct ipcp_options)); return (1); } /* * noaccomp - Disable Address/Control field compression negotiation. */ static int noaccomp() { lcp_wantoptions[0].neg_accompression = 0; lcp_allowoptions[0].neg_accompression = 0; return (1); } /* * noasyncmap - Disable async map negotiation. */ static int noasyncmap() { lcp_wantoptions[0].neg_asyncmap = 0; lcp_allowoptions[0].neg_asyncmap = 0; return (1); } /* * noipaddr - Disable IP address negotiation. */ static int noipaddr() { ipcp_wantoptions[0].neg_addr = 0; ipcp_allowoptions[0].neg_addr = 0; return (1); } /* * nomagicnumber - Disable magic number negotiation. */ static int nomagicnumber() { lcp_wantoptions[0].neg_magicnumber = 0; lcp_allowoptions[0].neg_magicnumber = 0; return (1); } /* * nomru - Disable mru negotiation. */ static int nomru() { lcp_wantoptions[0].neg_mru = 0; lcp_allowoptions[0].neg_mru = 0; return (1); } /* * setmru - Set MRU for negotiation. */ static int setmru(argv) char **argv; { long mru; if (!number_option(*argv, &mru, 0)) return 0; lcp_wantoptions[0].mru = mru; lcp_wantoptions[0].neg_mru = 1; return (1); } /* * setmru - Set the largest MTU we'll use. */ static int setmtu(argv) char **argv; { long mtu; if (!number_option(*argv, &mtu, 0)) return 0; if (mtu < MINMRU || mtu > MAXMRU) { fprintf(stderr, "mtu option value of %d is too %s\n", mtu, (mtu < MINMRU? "small": "large")); return 0; } lcp_allowoptions[0].mru = mtu; return (1); } /* * nopcomp - Disable Protocol field compression negotiation. */ static int nopcomp() { lcp_wantoptions[0].neg_pcompression = 0; lcp_allowoptions[0].neg_pcompression = 0; return (1); } /* * setpassive - Set passive mode (don't give up if we time out sending * LCP configure-requests). */ static int setpassive() { lcp_wantoptions[0].passive = 1; return (1); } /* * setsilent - Set silent mode (don't start sending LCP configure-requests * until we get one from the peer). */ static int setsilent() { lcp_wantoptions[0].silent = 1; return 1; } /* * nopap - Disable PAP authentication with peer. */ static int nopap() { lcp_allowoptions[0].neg_upap = 0; return (1); } /* * reqpap - Require PAP authentication from peer. */ static int reqpap() { lcp_wantoptions[0].neg_upap = 1; auth_required = 1; } /* * setupapfile - specifies UPAP info for authenticating with peer. */ static int setupapfile(argv) char **argv; { FILE * ufile; int l; lcp_allowoptions[0].neg_upap = 1; /* open user info file */ if ((ufile = fopen(*argv, "r")) == NULL) { fprintf(stderr, "unable to open user login data file %s\n", *argv); return 0; } if (!readable(fileno(ufile))) { fprintf(stderr, "%s: access denied\n", *argv); return 0; } check_access(ufile, *argv); /* get username */ if (fgets(user, MAXNAMELEN - 1, ufile) == NULL || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){ fprintf(stderr, "Unable to read user login data file %s.\n", *argv); return 0; } fclose(ufile); /* get rid of newlines */ l = strlen(user); if (l > 0 && user[l-1] == '\n') user[l-1] = 0; l = strlen(passwd); if (l > 0 && passwd[l-1] == '\n') passwd[l-1] = 0; return (1); } /* * nochap - Disable CHAP authentication with peer. */ static int nochap() { lcp_allowoptions[0].neg_chap = 0; return (1); } /* * reqchap - Require CHAP authentication from peer. */ static int reqchap() { lcp_wantoptions[0].neg_chap = 1; auth_required = 1; return (1); } /* * setnovj - disable vj compression */ static int setnovj() { ipcp_wantoptions[0].neg_vj = 0; ipcp_allowoptions[0].neg_vj = 0; return (1); } /* * setnovjccomp - disable VJ connection-ID compression */ static int setnovjccomp() { ipcp_wantoptions[0].cflag = 0; ipcp_allowoptions[0].cflag = 0; } /* * setvjslots - set maximum number of connection slots for VJ compression */ static int setvjslots(argv) char **argv; { int value; if (!int_option(*argv, &value)) return 0; if (value < 2 || value > 16) { fprintf(stderr, "pppd: vj-max-slots value must be between 2 and 16\n"); return 0; } ipcp_wantoptions [0].maxslotindex = ipcp_allowoptions[0].maxslotindex = value - 1; return 1; } /* * setconnector - Set a program to connect to a serial line */ static int setconnector(argv) char **argv; { connector = strdup(*argv); if (connector == NULL) novm("connector string"); return (1); } /* * setdisconnector - Set a program to disconnect from the serial line */ static int setdisconnector(argv) char **argv; { disconnector = strdup(*argv); if (disconnector == NULL) novm("disconnector string"); return (1); } /* * setdomain - Set domain name to append to hostname */ static int setdomain(argv) char **argv; { strncat(hostname, *argv, MAXNAMELEN - strlen(hostname)); hostname[MAXNAMELEN-1] = 0; return (1); } /* * setasyncmap - add bits to asyncmap (what we request peer to escape). */ static int setasyncmap(argv) char **argv; { long asyncmap; if (!number_option(*argv, &asyncmap, 16)) return 0; lcp_wantoptions[0].asyncmap |= asyncmap; lcp_wantoptions[0].neg_asyncmap = 1; return(1); } /* * setescape - add chars to the set we escape on transmission. */ static int setescape(argv) char **argv; { int n, ret; char *p, *endp; p = *argv; ret = 1; while (*p) { n = strtol(p, &endp, 16); if (p == endp) { fprintf(stderr, "%s: invalid hex number: %s\n", progname, p); return 0; } p = endp; if (n < 0 || 0x20 <= n && n <= 0x3F || n == 0x5E || n > 0xFF) { fprintf(stderr, "%s: can't escape character 0x%x\n", n); ret = 0; } else xmit_accm[0][n >> 5] |= 1 << (n & 0x1F); while (*p == ',' || *p == ' ') ++p; } return ret; } /* * setspeed - Set the speed. */ static int setspeed(arg) char *arg; { char *ptr; int spd; spd = strtol(arg, &ptr, 0); if (ptr == arg || *ptr != 0 || spd == 0) return 0; inspeed = spd; return 1; } /* * setdevname - Set the device name. */ int setdevname(cp) char *cp; { struct stat statbuf; char *tty, *ttyname(); char dev[MAXPATHLEN]; if (strncmp("/dev/", cp, 5) != 0) { strcpy(dev, "/dev/"); strncat(dev, cp, MAXPATHLEN - 5); dev[MAXPATHLEN-1] = 0; cp = dev; } /* * Check if there is a device by this name. */ if (stat(cp, &statbuf) < 0) { if (errno == ENOENT) return 0; syslog(LOG_ERR, cp); return -1; } (void) strncpy(devname, cp, MAXPATHLEN); devname[MAXPATHLEN-1] = 0; default_device = FALSE; return 1; } /* * setipaddr - Set the IP address */ int setipaddr(arg) char *arg; { struct hostent *hp; char *colon, *index(); u_long local, remote; ipcp_options *wo = &ipcp_wantoptions[0]; /* * IP address pair separated by ":". */ if ((colon = index(arg, ':')) == NULL) return 0; /* * If colon first character, then no local addr. */ if (colon != arg) { *colon = '\0'; if ((local = inet_addr(arg)) == -1) { if ((hp = gethostbyname(arg)) == NULL) { fprintf(stderr, "unknown host: %s\n", arg); return -1; } else { local = *(long *)hp->h_addr; if (our_name[0] == 0) { strncpy(our_name, arg, MAXNAMELEN); our_name[MAXNAMELEN-1] = 0; } } } if (bad_ip_adrs(local)) { fprintf(stderr, "bad local IP address %s\n", ip_ntoa(local)); return -1; } if (local != 0) wo->ouraddr = local; *colon = ':'; } /* * If colon last character, then no remote addr. */ if (*++colon != '\0') { if ((remote = inet_addr(colon)) == -1) { if ((hp = gethostbyname(colon)) == NULL) { fprintf(stderr, "unknown host: %s\n", colon); return -1; } else { remote = *(long *)hp->h_addr; if (remote_name[0] == 0) { strncpy(remote_name, colon, MAXNAMELEN); remote_name[MAXNAMELEN-1] = 0; } } } if (bad_ip_adrs(remote)) { fprintf(stderr, "bad remote IP address %s\n", ip_ntoa(remote)); return -1; } if (remote != 0) wo->hisaddr = remote; } return 1; } /* * setnoipdflt - disable setipdefault() */ static int setnoipdflt() { disable_defaultip = 1; return 1; } /* * setipcpaccl - accept peer's idea of our address */ static int setipcpaccl() { ipcp_wantoptions[0].accept_local = 1; return 1; } /* * setipcpaccr - accept peer's idea of its address */ static int setipcpaccr() { ipcp_wantoptions[0].accept_remote = 1; return 1; } /* * setipdefault - default our local IP address based on our hostname. */ void setipdefault() { struct hostent *hp; u_long local; ipcp_options *wo = &ipcp_wantoptions[0]; /* * If local IP address already given, don't bother. */ if (wo->ouraddr != 0 || disable_defaultip) return; /* * Look up our hostname (possibly with domain name appended) * and take the first IP address as our local IP address. * If there isn't an IP address for our hostname, too bad. */ wo->accept_local = 1; /* don't insist on this default value */ if ((hp = gethostbyname(hostname)) == NULL) return; local = *(long *)hp->h_addr; if (local != 0 && !bad_ip_adrs(local)) wo->ouraddr = local; } /* * setnetmask - set the netmask to be used on the interface. */ static int setnetmask(argv) char **argv; { u_long mask; if ((mask = inet_addr(*argv)) == -1 || (netmask & ~mask) != 0) { fprintf(stderr, "Invalid netmask %s\n", *argv); return 0; } netmask = mask; return (1); } /* * Return user specified netmask. A value of zero means no netmask has * been set. */ /* ARGSUSED */ u_long GetMask(addr) u_long addr; { return(netmask); } static int setcrtscts() { crtscts = 1; return (1); } static int setxonxoff() { crtscts = 2; return (1); } static int setnodetach() { nodetach = 1; return (1); } static int setmodem() { modem = 1; return 1; } static int setlocal() { modem = 0; return 1; } static int setlock() { lockflag = 1; return 1; } static int setusehostname() { usehostname = 1; return 1; } static int setname(argv) char **argv; { if (our_name[0] == 0) { strncpy(our_name, argv[0], MAXNAMELEN); our_name[MAXNAMELEN-1] = 0; } return 1; } static int setuser(argv) char **argv; { strncpy(user, argv[0], MAXNAMELEN); user[MAXNAMELEN-1] = 0; return 1; } static int setremote(argv) char **argv; { strncpy(remote_name, argv[0], MAXNAMELEN); remote_name[MAXNAMELEN-1] = 0; return 1; } static int setauth() { auth_required = 1; return 1; } static int setdefaultroute() { ipcp_wantoptions[0].default_route = 1; return 1; } static int setproxyarp() { ipcp_wantoptions[0].proxy_arp = 1; return 1; } static int setpersist() { persist = 1; return 1; } static int setdologin() { uselogin = 1; return 1; } /* * Functions to set the echo interval for modem-less monitors */ static int setlcpechointv(argv) char **argv; { return int_option(*argv, &lcp_echo_interval); } static int setlcpechofails(argv) char **argv; { return int_option(*argv, &lcp_echo_fails); } /* * Functions to set timeouts, max transmits, etc. */ static int setlcptimeout(argv) char **argv; { return int_option(*argv, &lcp_fsm[0].timeouttime); } static int setlcpterm(argv) char **argv; { return int_option(*argv, &lcp_fsm[0].maxtermtransmits); } static int setlcpconf(argv) char **argv; { return int_option(*argv, &lcp_fsm[0].maxconfreqtransmits); } static int setlcpfails(argv) char **argv; { return int_option(*argv, &lcp_fsm[0].maxnakloops); } static int setipcptimeout(argv) char **argv; { return int_option(*argv, &ipcp_fsm[0].timeouttime); } static int setipcpterm(argv) char **argv; { return int_option(*argv, &ipcp_fsm[0].maxtermtransmits); } static int setipcpconf(argv) char **argv; { return int_option(*argv, &ipcp_fsm[0].maxconfreqtransmits); } static int setipcpfails(argv) char **argv; { return int_option(*argv, &lcp_fsm[0].maxnakloops); } static int setpaptimeout(argv) char **argv; { return int_option(*argv, &upap[0].us_timeouttime); } static int setpapreqs(argv) char **argv; { return int_option(*argv, &upap[0].us_maxtransmits); } static int setchaptimeout(argv) char **argv; { return int_option(*argv, &chap[0].timeouttime); } static int setchapchal(argv) char **argv; { return int_option(*argv, &chap[0].max_transmits); } static int setchapintv(argv) char **argv; { return int_option(*argv, &chap[0].chal_interval); }