/* $OpenBSD: options.c,v 1.20 2006/01/25 22:41:54 moritz Exp $ */ /* * options.c - handles option processing for PPP. * * Copyright (c) 1984-2000 Carnegie Mellon University. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The name "Carnegie Mellon University" must not be used to * endorse or promote products derived from this software without * prior written permission. For permission or any legal * details, please contact * Office of Technology Transfer * Carnegie Mellon University * 5000 Forbes Avenue * Pittsburgh, PA 15213-3890 * (412) 268-4387, fax: (412) 268-7395 * tech-transfer@andrew.cmu.edu * * 4. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by Computing Services * at Carnegie Mellon University (http://www.cmu.edu/computing/)." * * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef lint #if 0 static char rcsid[] = "Id: options.c,v 1.42 1998/03/26 04:46:06 paulus Exp $"; #else static char rcsid[] = "$OpenBSD: options.c,v 1.20 2006/01/25 22:41:54 moritz Exp $"; #endif #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef PPP_FILTER #include #include /* XXX: To get struct pcap */ #endif #include "pppd.h" #include "pathnames.h" #include "patchlevel.h" #include "fsm.h" #include "lcp.h" #include "ipcp.h" #include "upap.h" #include "chap.h" #include "ccp.h" #ifdef CBCP_SUPPORT #include "cbcp.h" #endif #ifdef IPX_CHANGE #include "ipxcp.h" #endif /* IPX_CHANGE */ #include #define FALSE 0 #define TRUE 1 #if defined(ultrix) || defined(NeXT) char *strdup(char *); #endif #ifndef GIDSET_TYPE #define GIDSET_TYPE gid_t #endif /* * Option variables and default values. */ #ifdef PPP_FILTER int dflag = 0; /* Tell libpcap we want debugging */ #endif int debug = 0; /* Debug flag */ int kdebugflag = 0; /* Tell kernel to print debug messages */ int default_device = 1; /* Using /dev/tty or equivalent */ char devnam[MAXPATHLEN] = "/dev/tty"; /* Device name */ int crtscts = 0; /* Use hardware flow control */ int modem = 1; /* Use modem control lines */ int modem_chat = 0; /* Use modem control lines during chat */ int inspeed = 0; /* Input/Output speed requested */ u_int32_t netmask = 0; /* IP netmask to set on interface */ int lockflag = 0; /* Create lock file to lock the serial dev */ int nodetach = 0; /* Don't detach from controlling tty */ char *connector = NULL; /* Script to establish physical link */ char *disconnector = NULL; /* Script to disestablish physical link */ char *welcomer = NULL; /* Script to run after phys link estab. */ int maxconnect = 0; /* Maximum connect time */ char user[MAXNAMELEN]; /* Username for PAP */ char passwd[MAXSECRETLEN]; /* Password for PAP */ int auth_required = 0; /* Peer is required to authenticate */ int defaultroute = 0; /* assign default route through interface */ int proxyarp = 0; /* Set up proxy ARP entry for peer */ int persist = 0; /* Reopen link after it goes down */ int uselogin = 0; /* Use /etc/passwd for checking PAP */ int lcp_echo_interval = 0; /* Interval between LCP echo-requests */ int lcp_echo_fails = 0; /* Tolerance to unanswered echo-requests */ char our_name[MAXNAMELEN]; /* Our name for authentication purposes */ char remote_name[MAXNAMELEN]; /* Peer's name for authentication */ int explicit_remote = 0; /* User specified explicit remote name */ int usehostname = 0; /* Use hostname for our_name */ int disable_defaultip = 0; /* Don't use hostname for default IP adrs */ int demand = 0; /* do dial-on-demand */ char *ipparam = NULL; /* Extra parameter for ip up/down scripts */ int cryptpap; /* Passwords in pap-secrets are encrypted */ int idle_time_limit = 0; /* Disconnect if idle for this many seconds */ int holdoff = 30; /* # seconds to pause before reconnecting */ int refuse_pap = 0; /* Set to say we won't do PAP */ int refuse_chap = 0; /* Set to say we won't do CHAP */ #ifdef MSLANMAN int ms_lanman = 0; /* Nonzero if use LanMan password instead of NT */ /* Has meaning only with MS-CHAP challenges */ #endif struct option_info auth_req_info; struct option_info connector_info; struct option_info disconnector_info; struct option_info welcomer_info; struct option_info devnam_info; #ifdef PPP_FILTER struct bpf_program pass_filter;/* Filter program for packets to pass */ struct bpf_program active_filter; /* Filter program for link-active pkts */ pcap_t pc; /* Fake struct pcap so we can compile expr */ #endif /* * Prototypes */ static int setdevname(char *, int); static int setipaddr(char *); static int setspeed(char *); static int setdebug(char **); static int setkdebug(char **); static int setpassive(char **); static int setsilent(char **); static int noopt(char **); static int setnovj(char **); static int setnovjccomp(char **); static int setvjslots(char **); static int reqpap(char **); static int nopap(char **); #ifdef OLD_OPTIONS static int setupapfile(char **); #endif static int nochap(char **); static int reqchap(char **); static int noaccomp(char **); static int noasyncmap(char **); static int noip(char **); static int nomagicnumber(char **); static int setasyncmap(char **); static int setescape(char **); static int setmru(char **); static int setmtu(char **); #ifdef CBCP_SUPPORT static int setcbcp(char **); #endif static int nomru(char **); static int nopcomp(char **); static int setconnector(char **); static int setdisconnector(char **); static int setwelcomer(char **); static int setmaxconnect(char **); static int setdomain(char **); static int setnetmask(char **); static int setcrtscts(char **); static int setnocrtscts(char **); static int setxonxoff(char **); static int setnodetach(char **); static int setupdetach(char **); static int setmodem(char **); static int setmodem_chat(char **); static int setlocal(char **); static int setlock(char **); static int setname(char **); static int setuser(char **); static int setremote(char **); static int setauth(char **); static int setnoauth(char **); static int readfile(char **); static int callfile(char **); static int setdefaultroute(char **); static int setnodefaultroute(char **); static int setproxyarp(char **); static int setnoproxyarp(char **); static int setpersist(char **); static int setnopersist(char **); static int setdologin(char **); static int setusehostname(char **); static int setnoipdflt(char **); static int setlcptimeout(char **); static int setlcpterm(char **); static int setlcpconf(char **); static int setlcpfails(char **); static int setipcptimeout(char **); static int setipcpterm(char **); static int setipcpconf(char **); static int setipcpfails(char **); static int setpaptimeout(char **); static int setpapreqs(char **); static int setpapreqtime(char **); static int setchaptimeout(char **); static int setchapchal(char **); static int setchapintv(char **); static int setipcpaccl(char **); static int setipcpaccr(char **); static int setlcpechointv(char **); static int setlcpechofails(char **); static int noccp(char **); static int setbsdcomp(char **); static int setnobsdcomp(char **); static int setdeflate(char **); static int setnodeflate(char **); static int setnodeflatedraft(char **); static int setdemand(char **); static int setpred1comp(char **); static int setnopred1comp(char **); static int setipparam(char **); static int setpapcrypt(char **); static int setidle(char **); static int setholdoff(char **); static int setdnsaddr(char **); static int resetipxproto(char **); static int setwinsaddr(char **); static int showversion(char **); static int showhelp(char **); #ifdef PPP_FILTER static int setpdebug(char **); static int setpassfilter(char **); static int setactivefilter(char **); #endif #ifdef IPX_CHANGE static int setipxproto(char **); static int setipxanet(char **); static int setipxalcl(char **); static int setipxarmt(char **); static int setipxnetwork(char **); static int setipxnode(char **); static int setipxrouter(char **); static int setipxname(char **); static int setipxcptimeout(char **); static int setipxcpterm(char **); static int setipxcpconf(char **); static int setipxcpfails(char **); #endif /* IPX_CHANGE */ #ifdef MSLANMAN static int setmslanman(char **); #endif static int number_option(char *, u_int32_t *, int); static int int_option(char *, int *); static int readable(int fd); /* * Valid arguments. */ static struct cmd { char *cmd_name; int num_args; int (*cmd_func)(char **); } cmds[] = { {"-all", 0, noopt}, /* Don't request/allow any options (useless) */ {"noaccomp", 0, noaccomp}, /* Disable Address/Control compression */ {"-ac", 0, noaccomp}, /* Disable Address/Control compress */ {"default-asyncmap", 0, noasyncmap}, /* Disable asyncmap negoatiation */ {"-am", 0, noasyncmap}, /* Disable asyncmap negotiation */ {"-as", 1, setasyncmap}, /* set the desired async map */ {"-d", 0, setdebug}, /* Increase debugging level */ {"nodetach", 0, setnodetach}, /* Don't detach from controlling tty */ {"-detach", 0, setnodetach}, /* don't fork */ {"updetach", 0, setupdetach}, /* Detach once an NP has come up */ {"noip", 0, noip}, /* Disable IP and IPCP */ {"-ip", 0, noip}, /* Disable IP and IPCP */ {"nomagic", 0, nomagicnumber}, /* Disable magic number negotiation */ {"-mn", 0, nomagicnumber}, /* Disable magic number negotiation */ {"default-mru", 0, nomru}, /* Disable MRU negotiation */ {"-mru", 0, nomru}, /* Disable mru negotiation */ {"-p", 0, setpassive}, /* Set passive mode */ {"nopcomp", 0, nopcomp}, /* Disable protocol field compression */ {"-pc", 0, nopcomp}, /* Disable protocol field compress */ #if OLD_OPTIONS {"+ua", 1, setupapfile}, /* Get PAP user and password from file */ #endif {"require-pap", 0, reqpap}, /* Require PAP authentication from peer */ {"+pap", 0, reqpap}, /* Require PAP auth from peer */ {"refuse-pap", 0, nopap}, /* Don't agree to auth to peer with PAP */ {"-pap", 0, nopap}, /* Don't allow UPAP authentication with peer */ {"require-chap", 0, reqchap}, /* Require CHAP authentication from peer */ {"+chap", 0, reqchap}, /* Require CHAP authentication from peer */ {"refuse-chap", 0, nochap}, /* Don't agree to auth to peer with CHAP */ {"-chap", 0, nochap}, /* Don't allow CHAP authentication with peer */ {"novj", 0, setnovj}, /* Disable VJ compression */ {"-vj", 0, setnovj}, /* disable VJ compression */ {"novjccomp", 0, setnovjccomp}, /* disable VJ connection-ID 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. */ {"welcome", 1, setwelcomer},/* Script to welcome client */ {"maxconnect", 1, setmaxconnect}, /* specify a maximum connect time */ {"crtscts", 0, setcrtscts}, /* set h/w flow control */ {"nocrtscts", 0, setnocrtscts}, /* clear h/w flow control */ {"-crtscts", 0, setnocrtscts}, /* clear h/w flow control */ {"xonxoff", 0, setxonxoff}, /* set s/w flow control */ {"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 */ #ifdef CBCP_SUPPORT {"callback", 1, setcbcp}, /* Ask for callback */ #endif {"netmask", 1, setnetmask}, /* set netmask */ {"passive", 0, setpassive}, /* Set passive mode */ {"silent", 0, setsilent}, /* Set silent mode */ {"modem", 0, setmodem}, /* Use modem control lines */ {"modem_chat", 0, setmodem_chat}, /* Use modem control lines during chat */ {"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 name for 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 */ {"noauth", 0, setnoauth}, /* Don't require peer to authenticate */ {"file", 1, readfile}, /* Take options from a file */ {"call", 1, callfile}, /* Take options from a privileged file */ {"defaultroute", 0, setdefaultroute}, /* Add default route */ {"nodefaultroute", 0, setnodefaultroute}, /* disable defaultroute option */ {"-defaultroute", 0, setnodefaultroute}, /* disable defaultroute option */ {"proxyarp", 0, setproxyarp}, /* Add proxy ARP entry */ {"noproxyarp", 0, setnoproxyarp}, /* disable proxyarp option */ {"-proxyarp", 0, setnoproxyarp}, /* disable proxyarp option */ {"persist", 0, setpersist}, /* Keep on reopening connection after close */ {"nopersist", 0, setnopersist}, /* Turn off persist option */ {"demand", 0, setdemand}, /* Dial on demand */ {"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 retransmit timeout for PAP */ {"pap-max-authreq", 1, setpapreqs}, /* Set max #xmits for auth-reqs */ {"pap-timeout", 1, setpapreqtime}, /* Set time limit for peer PAP auth. */ {"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 */ {"noccp", 0, noccp}, /* Disable CCP negotiation */ {"-ccp", 0, noccp}, /* Disable CCP negotiation */ {"bsdcomp", 1, setbsdcomp}, /* request BSD-Compress */ {"nobsdcomp", 0, setnobsdcomp}, /* don't allow BSD-Compress */ {"-bsdcomp", 0, setnobsdcomp}, /* don't allow BSD-Compress */ {"deflate", 1, setdeflate}, /* request Deflate compression */ {"nodeflate", 0, setnodeflate}, /* don't allow Deflate compression */ {"-deflate", 0, setnodeflate}, /* don't allow Deflate compression */ {"nodeflatedraft", 0, setnodeflatedraft}, /* don't use draft deflate # */ {"predictor1", 0, setpred1comp}, /* request Predictor-1 */ {"nopredictor1", 0, setnopred1comp},/* don't allow Predictor-1 */ {"-predictor1", 0, setnopred1comp}, /* don't allow Predictor-1 */ {"ipparam", 1, setipparam}, /* set ip script parameter */ {"papcrypt", 0, setpapcrypt}, /* PAP passwords encrypted */ {"idle", 1, setidle}, /* idle time limit (seconds) */ {"holdoff", 1, setholdoff}, /* set holdoff time (seconds) */ {"ms-dns", 1, setdnsaddr}, /* DNS address for the peer's use */ {"ms-wins", 1, setwinsaddr}, /* Nameserver for SMB over TCP/IP for peer */ {"noipx", 0, resetipxproto}, /* Disable IPXCP (and IPX) */ {"-ipx", 0, resetipxproto}, /* Disable IPXCP (and IPX) */ {"--version", 0, showversion}, /* Show version number */ {"--help", 0, showhelp}, /* Show brief listing of options */ {"-h", 0, showhelp}, /* ditto */ #ifdef PPP_FILTER {"pdebug", 1, setpdebug}, /* libpcap debugging */ {"pass-filter", 1, setpassfilter}, /* set filter for packets to pass */ {"active-filter", 1, setactivefilter}, /* set filter for active pkts */ #endif #ifdef IPX_CHANGE {"ipx-network", 1, setipxnetwork}, /* IPX network number */ {"ipxcp-accept-network", 0, setipxanet}, /* Accept peer netowrk */ {"ipx-node", 1, setipxnode}, /* IPX node number */ {"ipxcp-accept-local", 0, setipxalcl}, /* Accept our address */ {"ipxcp-accept-remote", 0, setipxarmt}, /* Accept peer's address */ {"ipx-routing", 1, setipxrouter}, /* IPX routing proto number */ {"ipx-router-name", 1, setipxname}, /* IPX router name */ {"ipxcp-restart", 1, setipxcptimeout}, /* Set timeout for IPXCP */ {"ipxcp-max-terminate", 1, setipxcpterm}, /* max #xmits for term-reqs */ {"ipxcp-max-configure", 1, setipxcpconf}, /* max #xmits for conf-reqs */ {"ipxcp-max-failure", 1, setipxcpfails}, /* max #conf-naks for IPXCP */ #if 0 {"ipx-compression", 1, setipxcompression}, /* IPX compression number */ #endif {"ipx", 0, setipxproto}, /* Enable IPXCP (and IPX) */ {"+ipx", 0, setipxproto}, /* Enable IPXCP (and IPX) */ #endif /* IPX_CHANGE */ #ifdef MSLANMAN {"ms-lanman", 0, setmslanman}, /* Use LanMan psswd when using MS-CHAP */ #endif {NULL, 0, NULL} }; #ifndef IMPLEMENTATION #define IMPLEMENTATION "" #endif static char *usage_string = "\ pppd version %s patch level %d%s\n\ Usage: %s [ options ], where options 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\ modem_chat Use modem control lines during chat\n\ mru Set MRU value to for negotiation\n\ netmask Set interface netmask to \n\ See pppd(8) for more options.\n\ "; static char *current_option; /* the name of the option being parsed */ static int privileged_option; /* set iff the current option came from root */ static char *option_source; /* string saying where the option came from */ /* * parse_args - parse a string of arguments from the command line. */ int parse_args(argc, argv) int argc; char **argv; { char *arg; struct cmd *cmdp; int ret; privileged_option = privileged; option_source = "command line"; 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) { option_error("too few parameters for option %s", arg); return 0; } current_option = arg; 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)) == 0 && (ret = setspeed(arg)) == 0 && (ret = setipaddr(arg)) == 0) { option_error("unrecognized option '%s'", arg); usage(); return 0; } if (ret < 0) /* error */ return 0; } } return 1; } /* * scan_args - scan the command line arguments to get the tty name, * if specified. */ void scan_args(argc, argv) int argc; char **argv; { char *arg; struct cmd *cmdp; while (argc > 0) { arg = *argv++; --argc; /* Skip options and their arguments */ for (cmdp = cmds; cmdp->cmd_name; cmdp++) if (!strcmp(arg, cmdp->cmd_name)) break; if (cmdp->cmd_name != NULL) { argc -= cmdp->num_args; argv += cmdp->num_args; continue; } /* Check if it's a tty name and copy it if so */ (void) setdevname(arg, 1); } } /* * usage - print out a message telling how to use the program. */ void usage() { if (phase == PHASE_INITIALIZE) fprintf(stderr, usage_string, VERSION, PATCHLEVEL, IMPLEMENTATION, progname); } /* * showhelp - print out usage message and exit. */ static int showhelp(argv) char **argv; { if (phase == PHASE_INITIALIZE) { usage(); exit(0); } return 0; } /* * showversion - print out the version number and exit. */ static int showversion(argv) char **argv; { if (phase == PHASE_INITIALIZE) { fprintf(stderr, "pppd version %s patch level %d%s\n", VERSION, PATCHLEVEL, IMPLEMENTATION); exit(0); } return 0; } /* * options_from_file - Read a string of options from a file, * and interpret them. */ int options_from_file(filename, must_exist, check_prot, priv) char *filename; int must_exist; int check_prot; int priv; { FILE *f; int i, newline, ret; struct cmd *cmdp; int oldpriv; char *argv[MAXARGS]; char args[MAXARGS][MAXWORDLEN]; char cmd[MAXWORDLEN]; if ((f = fopen(filename, "r")) == NULL) { if (!must_exist && errno == ENOENT) return 1; option_error("Can't open options file %s: %m", filename); return 0; } if (check_prot && !readable(fileno(f))) { option_error("Can't open options file %s: access denied", filename); fclose(f); return 0; } oldpriv = privileged_option; privileged_option = priv; ret = 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)) { option_error( "In file %s: too few parameters for option '%s'", filename, cmd); goto err; } argv[i] = args[i]; } current_option = cmd; if (!(*cmdp->cmd_func)(argv)) goto err; } else { /* * Maybe a tty name, speed or IP address? */ if ((i = setdevname(cmd, 0)) == 0 && (i = setspeed(cmd)) == 0 && (i = setipaddr(cmd)) == 0) { option_error("In file %s: unrecognized option '%s'", filename, cmd); goto err; } if (i < 0) /* error */ goto err; } } ret = 1; err: fclose(f); privileged_option = oldpriv; return ret; } /* * 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; if (asprintf(&path, "%s/%s", user, file) == -1) novm("init file name"); ret = options_from_file(path, 0, 1, privileged); 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, *p; int ret; dev = devnam; if (strncmp(dev, "/dev/", 5) == 0) dev += 5; if (strcmp(dev, "tty") == 0) return 1; /* don't look for /etc/ppp/options.tty */ if (asprintf(&path, "%s%s", _PATH_TTYOPT, dev) == -1) novm("tty init file name"); ret = options_from_file(path, 0, 0, 1); free(path); return ret; } /* * option_error - print a message about an error in an option. * The message is logged, and also sent to * stderr if phase == PHASE_INITIALIZE. */ void option_error(char *fmt, ...) { va_list args; char buf[256]; va_start(args, fmt); vfmtmsg(buf, sizeof(buf), fmt, args); va_end(args); if (phase == PHASE_INITIALIZE) fprintf(stderr, "%s: %s\n", progname, buf); syslog(LOG_ERR, "%s", buf); } /* * 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 (" or '). * 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, comment; int value, digit, got, n; #define isoctal(c) ((c) >= '0' && (c) < '8') *newlinep = 0; len = 0; escape = 0; comment = 0; /* * First skip white-space and comments. */ for (;;) { c = getc(f); if (c == EOF) break; /* * A newline means the end of a comment; backslash-newline * is ignored. Note that we cannot have escape && comment. */ if (c == '\n') { if (!escape) { *newlinep = 1; comment = 0; } else escape = 0; continue; } /* * Ignore characters other than newline in a comment. */ if (comment) continue; /* * If this character is escaped, we have a word start. */ if (escape) break; /* * If this is the escape character, look at the next character. */ if (c == '\\') { escape = 1; continue; } /* * If this is the start of a comment, ignore the rest of the line. */ if (c == '#') { comment = 1; continue; } /* * A non-whitespace character is the start of a word. */ if (!isspace(c)) break; } /* * Save the delimiter for quoted strings. */ if (!escape && (c == '"' || c == '\'')) { quoted = c; c = getc(f); } else quoted = 0; /* * Process characters until the end of the word. */ while (c != EOF) { if (escape) { /* * This character is escaped: backslash-newline is ignored, * various other characters indicate particular values * as for C backslash-escapes. */ escape = 0; if (c == '\n') { c = getc(f); continue; } got = 0; switch (c) { case 'a': value = '\a'; break; case 'b': value = '\b'; break; case 'f': value = '\f'; break; case 'n': value = '\n'; break; case 'r': value = '\r'; break; case 's': value = ' '; break; case 't': value = '\t'; break; default: if (isoctal(c)) { /* * \ddd octal sequence */ value = 0; for (n = 0; n < 3 && isoctal(c); ++n) { value = (value << 3) + (c & 07); c = getc(f); } got = 1; break; } if (c == 'x') { /* * \x sequence */ value = 0; c = getc(f); for (n = 0; n < 2 && isxdigit(c); ++n) { digit = toupper(c) - '0'; if (digit > 10) digit += '0' + 10 - 'A'; value = (value << 4) + digit; c = getc (f); } got = 1; break; } /* * Otherwise the character stands for itself. */ value = c; break; } /* * Store the resulting character for the escape sequence. */ if (len < MAXWORDLEN-1) word[len] = value; ++len; if (!got) c = getc(f); continue; } /* * Not escaped: see if we've reached the end of the word. */ if (quoted) { if (c == quoted) break; } else { if (isspace(c) || c == '#') { ungetc (c, f); break; } } /* * Backslash starts an escape sequence. */ if (c == '\\') { escape = 1; c = getc(f); continue; } /* * An ordinary character: store it in the word and get another. */ if (len < MAXWORDLEN-1) word[len] = c; ++len; c = getc(f); } /* * End of the word: check for errors. */ if (c == EOF) { if (ferror(f)) { if (errno == 0) errno = EIO; option_error("Error reading %s: %m", filename); die(1); } /* * If len is zero, then we didn't find a word before the * end of the file. */ if (len == 0) return 0; } /* * Warn if the word was too long, and append a terminating null. */ if (len >= MAXWORDLEN) { option_error("warning: word in file %s too long (%.20s...)", filename, word); len = MAXWORDLEN - 1; } word[len] = 0; return 1; #undef isoctal } /* * number_option - parse an unsigned numeric parameter for an option. */ static int number_option(str, valp, base) char *str; u_int32_t *valp; int base; { char *ptr; *valp = strtoul(str, &ptr, base); if (ptr == str) { option_error("invalid numeric parameter '%s' for %s option", str, current_option); 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; { u_int32_t v; if (!number_option(str, &v, 0)) return 0; *valp = (int) v; return 1; } /* * The following procedures parse options. */ /* * readfile - take commands from a file. */ static int readfile(argv) char **argv; { return options_from_file(*argv, 1, 1, privileged_option); } /* * callfile - take commands from /etc/ppp/peers/. * Name may not contain /../, start with / or ../, or end in /.. */ static int callfile(argv) char **argv; { char *fname, *arg, *p; int l, ok; arg = *argv; ok = 1; if (arg[0] == '/' || arg[0] == 0) ok = 0; else { for (p = arg; *p != 0; ) { if (p[0] == '.' && p[1] == '.' && (p[2] == '/' || p[2] == 0)) { ok = 0; break; } while (*p != '/' && *p != 0) ++p; if (*p == '/') ++p; } } if (!ok) { option_error("call option value may not contain .. or start with /"); return 0; } l = strlen(arg) + strlen(_PATH_PEERFILES) + 1; if ((fname = (char *) malloc(l)) == NULL) novm("call file name"); strlcpy(fname, _PATH_PEERFILES, l); strlcat(fname, arg, l); ok = options_from_file(fname, 1, 1, 1); free(fname); return ok; } /* * setdebug - Set debug (command line argument). */ static int setdebug(argv) char **argv; { debug++; return (1); } /* * setkdebug - Set kernel debugging level. */ static int setkdebug(argv) char **argv; { return int_option(*argv, &kdebugflag); } #ifdef PPP_FILTER /* * setpdebug - Set libpcap debugging level. */ static int setpdebug(argv) char **argv; { return int_option(*argv, &dflag); } /* * setpassfilter - Set the pass filter for packets */ static int setpassfilter(argv) char **argv; { pc.linktype = DLT_PPP; pc.snapshot = PPP_HDRLEN; if (pcap_compile(&pc, &pass_filter, *argv, 1, netmask) == 0) return 1; option_error("error in pass-filter expression: %s\n", pcap_geterr(&pc)); return 0; } /* * setactivefilter - Set the active filter for packets */ static int setactivefilter(argv) char **argv; { pc.linktype = DLT_PPP; pc.snapshot = PPP_HDRLEN; if (pcap_compile(&pc, &active_filter, *argv, 1, netmask) == 0) return 1; option_error("error in active-filter expression: %s\n", pcap_geterr(&pc)); return 0; } #endif /* * noopt - Disable all options. */ static int noopt(argv) char **argv; { 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)); #ifdef IPX_CHANGE BZERO((char *) &ipxcp_wantoptions[0], sizeof (struct ipxcp_options)); BZERO((char *) &ipxcp_allowoptions[0], sizeof (struct ipxcp_options)); #endif /* IPX_CHANGE */ return (1); } /* * noaccomp - Disable Address/Control field compression negotiation. */ static int noaccomp(argv) char **argv; { lcp_wantoptions[0].neg_accompression = 0; lcp_allowoptions[0].neg_accompression = 0; return (1); } /* * noasyncmap - Disable async map negotiation. */ static int noasyncmap(argv) char **argv; { lcp_wantoptions[0].neg_asyncmap = 0; lcp_allowoptions[0].neg_asyncmap = 0; return (1); } /* * noip - Disable IP and IPCP. */ static int noip(argv) char **argv; { ipcp_protent.enabled_flag = 0; return (1); } /* * nomagicnumber - Disable magic number negotiation. */ static int nomagicnumber(argv) char **argv; { lcp_wantoptions[0].neg_magicnumber = 0; lcp_allowoptions[0].neg_magicnumber = 0; return (1); } /* * nomru - Disable mru negotiation. */ static int nomru(argv) char **argv; { 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; { u_int32_t 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; { u_int32_t mtu; if (!number_option(*argv, &mtu, 0)) return 0; if (mtu < MINMRU || mtu > MAXMRU) { option_error("mtu option value of %u is too %s", mtu, (mtu < MINMRU? "small": "large")); return 0; } lcp_allowoptions[0].mru = mtu; return (1); } #ifdef CBCP_SUPPORT static int setcbcp(argv) char **argv; { lcp_wantoptions[0].neg_cbcp = 1; cbcp_protent.enabled_flag = 1; cbcp[0].us_number = strdup(*argv); if (cbcp[0].us_number == 0) novm("callback number"); cbcp[0].us_type |= (1 << CB_CONF_USER); cbcp[0].us_type |= (1 << CB_CONF_ADMIN); return (1); } #endif /* * nopcomp - Disable Protocol field compression negotiation. */ static int nopcomp(argv) char **argv; { 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(argv) char **argv; { 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(argv) char **argv; { lcp_wantoptions[0].silent = 1; return 1; } /* * nopap - Disable PAP authentication with peer. */ static int nopap(argv) char **argv; { refuse_pap = 1; return (1); } /* * reqpap - Require PAP authentication from peer. */ static int reqpap(argv) char **argv; { lcp_wantoptions[0].neg_upap = 1; setauth(NULL); return 1; } #if OLD_OPTIONS /* * 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) { option_error("unable to open user login data file %s", *argv); return 0; } if (!readable(fileno(ufile))) { option_error("%s: access denied", *argv); return 0; } check_access(ufile, *argv); /* get username */ if (fgets(user, MAXNAMELEN - 1, ufile) == NULL || fgets(passwd, MAXSECRETLEN - 1, ufile) == NULL){ option_error("unable to read user login data file %s", *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); } #endif /* * nochap - Disable CHAP authentication with peer. */ static int nochap(argv) char **argv; { refuse_chap = 1; return (1); } /* * reqchap - Require CHAP authentication from peer. */ static int reqchap(argv) char **argv; { lcp_wantoptions[0].neg_chap = 1; setauth(NULL); return (1); } /* * setnovj - disable vj compression */ static int setnovj(argv) char **argv; { ipcp_wantoptions[0].neg_vj = 0; ipcp_allowoptions[0].neg_vj = 0; return (1); } /* * setnovjccomp - disable VJ connection-ID compression */ static int setnovjccomp(argv) char **argv; { ipcp_wantoptions[0].cflag = 0; ipcp_allowoptions[0].cflag = 0; return 1; } /* * 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) { option_error("vj-max-slots value must be between 2 and 16"); 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("connect script"); connector_info.priv = privileged_option; connector_info.source = option_source; 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("disconnect script"); disconnector_info.priv = privileged_option; disconnector_info.source = option_source; return (1); } /* * setwelcomer - Set a program to welcome a client after connection */ static int setwelcomer(argv) char **argv; { welcomer = strdup(*argv); if (welcomer == NULL) novm("welcome script"); welcomer_info.priv = privileged_option; welcomer_info.source = option_source; return (1); } /* * setmaxconnect - Set the maximum connect time */ static int setmaxconnect(argv) char **argv; { int value; if (!int_option(*argv, &value)) return 0; if (value < 0) { option_error("maxconnect time must be positive"); return 0; } if (maxconnect > 0 && (value == 0 || value > maxconnect)) { option_error("maxconnect time cannot be increased"); return 0; } maxconnect = value; return 1; } /* * setdomain - Set domain name to append to hostname */ static int setdomain(argv) char **argv; { if (!privileged_option) { option_error("using the domain option requires root privilege"); return 0; } gethostname(hostname, MAXNAMELEN); if (**argv != 0) { if (**argv != '.') strlcat(hostname, ".", MAXNAMELEN); strlcat(hostname, *argv, MAXNAMELEN); } hostname[MAXNAMELEN-1] = 0; return (1); } /* * setasyncmap - add bits to asyncmap (what we request peer to escape). */ static int setasyncmap(argv) char **argv; { u_int32_t 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) { option_error("escape parameter contains invalid hex number '%s'", p); return 0; } p = endp; if (n < 0 || (0x20 <= n && n <= 0x3F) || n == 0x5E || n > 0xFF) { option_error("can't escape character 0x%x", 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. */ static int setdevname(cp, quiet) char *cp; int quiet; { struct stat statbuf; char dev[MAXPATHLEN]; if (*cp == 0) return 0; if (strncmp("/dev/", cp, 5) != 0) { strlcpy(dev, "/dev/", sizeof dev); strlcat(dev, cp, sizeof dev); cp = dev; } /* * Check if there is a device by this name. */ if (stat(cp, &statbuf) < 0) { if (errno == ENOENT || quiet) return 0; option_error("Couldn't stat %s: %m", cp); return -1; } (void) strlcpy(devnam, cp, MAXPATHLEN); default_device = FALSE; devnam_info.priv = privileged_option; devnam_info.source = option_source; return 1; } /* * setipaddr - Set the IP address */ static int setipaddr(arg) char *arg; { struct hostent *hp; char *colon; struct in_addr ina; u_int32_t local, remote; ipcp_options *wo = &ipcp_wantoptions[0]; /* * IP address pair separated by ":". */ if ((colon = strchr(arg, ':')) == NULL) return 0; /* * If colon first character, then no local addr. */ if (colon != arg) { *colon = '\0'; if (inet_aton(arg, &ina) == 0) { if ((hp = gethostbyname(arg)) == NULL) { option_error("unknown host: %s", arg); return -1; } else { local = *(u_int32_t *)hp->h_addr; if (our_name[0] == 0) strlcpy(our_name, arg, MAXNAMELEN); } } else local = ina.s_addr; if (bad_ip_adrs(local)) { option_error("bad local IP address %s", ip_ntoa(local)); return -1; } if (local != 0) wo->ouraddr = local; *colon = ':'; } /* * If colon last character, then no remote addr. */ if (*++colon != '\0') { if (inet_aton(colon, &ina) == 0) { if ((hp = gethostbyname(colon)) == NULL) { option_error("unknown host: %s", colon); return -1; } else { remote = *(u_int32_t *)hp->h_addr; if (remote_name[0] == 0) strlcpy(remote_name, colon, MAXNAMELEN); } } else remote = ina.s_addr; if (bad_ip_adrs(remote)) { option_error("bad remote IP address %s", ip_ntoa(remote)); return -1; } if (remote != 0) wo->hisaddr = remote; } return 1; } /* * setnoipdflt - disable setipdefault() */ static int setnoipdflt(argv) char **argv; { disable_defaultip = 1; return 1; } /* * setipcpaccl - accept peer's idea of our address */ static int setipcpaccl(argv) char **argv; { ipcp_wantoptions[0].accept_local = 1; return 1; } /* * setipcpaccr - accept peer's idea of its address */ static int setipcpaccr(argv) char **argv; { ipcp_wantoptions[0].accept_remote = 1; return 1; } /* * setnetmask - set the netmask to be used on the interface. */ static int setnetmask(argv) char **argv; { struct in_addr ina; if (inet_aton(*argv, &ina) == 0 || (netmask & ~ina.s_addr) != 0) { option_error("invalid netmask value '%s'", *argv); return (0); } netmask = ina.s_addr; return (1); } static int setcrtscts(argv) char **argv; { crtscts = 1; return (1); } static int setnocrtscts(argv) char **argv; { crtscts = -1; return (1); } static int setxonxoff(argv) char **argv; { lcp_wantoptions[0].asyncmap |= 0x000A0000; /* escape ^S and ^Q */ lcp_wantoptions[0].neg_asyncmap = 1; crtscts = -2; return (1); } static int setnodetach(argv) char **argv; { nodetach = 1; return (1); } static int setupdetach(argv) char **argv; { nodetach = -1; return (1); } static int setdemand(argv) char **argv; { demand = 1; persist = 1; return 1; } static int setmodem(argv) char **argv; { modem = 1; return 1; } static int setmodem_chat(argv) char **argv; { modem_chat = 1; return 1; } static int setlocal(argv) char **argv; { modem = 0; return 1; } static int setlock(argv) char **argv; { lockflag = 1; return 1; } static int setusehostname(argv) char **argv; { usehostname = 1; return 1; } static int setname(argv) char **argv; { if (!privileged_option) { option_error("using the name option requires root privilege"); return 0; } strlcpy(our_name, argv[0], MAXNAMELEN); return 1; } static int setuser(argv) char **argv; { strlcpy(user, argv[0], MAXNAMELEN); return 1; } static int setremote(argv) char **argv; { strlcpy(remote_name, argv[0], MAXNAMELEN); return 1; } static int setauth(argv) char **argv; { auth_required = 1; if (privileged_option > auth_req_info.priv) { auth_req_info.priv = privileged_option; auth_req_info.source = option_source; } return 1; } static int setnoauth(argv) char **argv; { if (auth_required && privileged_option < auth_req_info.priv) { if (auth_req_info.source == NULL) option_error("cannot override default auth option"); else option_error("cannot override auth option set by %s", auth_req_info.source); return 0; } auth_required = 0; return 1; } static int setdefaultroute(argv) char **argv; { if (!ipcp_allowoptions[0].default_route) { option_error("defaultroute option is disabled"); return 0; } ipcp_wantoptions[0].default_route = 1; return 1; } static int setnodefaultroute(argv) char **argv; { ipcp_allowoptions[0].default_route = 0; ipcp_wantoptions[0].default_route = 0; return 1; } static int setproxyarp(argv) char **argv; { if (!ipcp_allowoptions[0].proxy_arp) { option_error("proxyarp option is disabled"); return 0; } ipcp_wantoptions[0].proxy_arp = 1; return 1; } static int setnoproxyarp(argv) char **argv; { ipcp_wantoptions[0].proxy_arp = 0; ipcp_allowoptions[0].proxy_arp = 0; return 1; } static int setpersist(argv) char **argv; { persist = 1; return 1; } static int setnopersist(argv) char **argv; { persist = 0; return 1; } static int setdologin(argv) char **argv; { 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 setpapreqtime(argv) char **argv; { return int_option(*argv, &upap[0].us_reqtimeout); } 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); } static int noccp(argv) char **argv; { ccp_protent.enabled_flag = 0; return 1; } static int setbsdcomp(argv) char **argv; { int rbits, abits; char *str, *endp; str = *argv; abits = rbits = strtol(str, &endp, 0); if (endp != str && *endp == ',') { str = endp + 1; abits = strtol(str, &endp, 0); } if (*endp != 0 || endp == str) { option_error("invalid parameter '%s' for bsdcomp option", *argv); return 0; } if ((rbits != 0 && (rbits < BSD_MIN_BITS || rbits > BSD_MAX_BITS)) || (abits != 0 && (abits < BSD_MIN_BITS || abits > BSD_MAX_BITS))) { option_error("bsdcomp option values must be 0 or %d .. %d", BSD_MIN_BITS, BSD_MAX_BITS); return 0; } if (rbits > 0) { ccp_wantoptions[0].bsd_compress = 1; ccp_wantoptions[0].bsd_bits = rbits; } else ccp_wantoptions[0].bsd_compress = 0; if (abits > 0) { ccp_allowoptions[0].bsd_compress = 1; ccp_allowoptions[0].bsd_bits = abits; } else ccp_allowoptions[0].bsd_compress = 0; return 1; } static int setnobsdcomp(argv) char **argv; { ccp_wantoptions[0].bsd_compress = 0; ccp_allowoptions[0].bsd_compress = 0; return 1; } static int setdeflate(argv) char **argv; { int rbits, abits; char *str, *endp; str = *argv; abits = rbits = strtol(str, &endp, 0); if (endp != str && *endp == ',') { str = endp + 1; abits = strtol(str, &endp, 0); } if (*endp != 0 || endp == str) { option_error("invalid parameter '%s' for deflate option", *argv); return 0; } if ((rbits != 0 && (rbits < DEFLATE_MIN_SIZE || rbits > DEFLATE_MAX_SIZE)) || (abits != 0 && (abits < DEFLATE_MIN_SIZE || abits > DEFLATE_MAX_SIZE))) { option_error("deflate option values must be 0 or %d .. %d", DEFLATE_MIN_SIZE, DEFLATE_MAX_SIZE); return 0; } if (rbits > 0) { ccp_wantoptions[0].deflate = 1; ccp_wantoptions[0].deflate_size = rbits; } else ccp_wantoptions[0].deflate = 0; if (abits > 0) { ccp_allowoptions[0].deflate = 1; ccp_allowoptions[0].deflate_size = abits; } else ccp_allowoptions[0].deflate = 0; return 1; } static int setnodeflate(argv) char **argv; { ccp_wantoptions[0].deflate = 0; ccp_allowoptions[0].deflate = 0; return 1; } static int setnodeflatedraft(argv) char **argv; { ccp_wantoptions[0].deflate_draft = 0; ccp_allowoptions[0].deflate_draft = 0; return 1; } static int setpred1comp(argv) char **argv; { ccp_wantoptions[0].predictor_1 = 1; ccp_allowoptions[0].predictor_1 = 1; return 1; } static int setnopred1comp(argv) char **argv; { ccp_wantoptions[0].predictor_1 = 0; ccp_allowoptions[0].predictor_1 = 0; return 1; } static int setipparam(argv) char **argv; { ipparam = strdup(*argv); if (ipparam == NULL) novm("ipparam string"); return 1; } static int setpapcrypt(argv) char **argv; { cryptpap = 1; return 1; } static int setidle(argv) char **argv; { return int_option(*argv, &idle_time_limit); } static int setholdoff(argv) char **argv; { return int_option(*argv, &holdoff); } /* * setdnsaddr - set the dns address(es) */ static int setdnsaddr(argv) char **argv; { struct in_addr ina; struct hostent *hp; if (inet_aton(*argv, &ina) == 0) { if ((hp = gethostbyname(*argv)) == NULL) { option_error("invalid address parameter '%s' for ms-dns option", *argv); return (0); } ina.s_addr = *(u_int32_t *)hp->h_addr; } /* if there is no primary then update it. */ if (ipcp_allowoptions[0].dnsaddr[0] == 0) ipcp_allowoptions[0].dnsaddr[0] = ina.s_addr; /* always set the secondary address value to the same value. */ ipcp_allowoptions[0].dnsaddr[1] = ina.s_addr; return (1); } /* * setwinsaddr - set the wins address(es) * This is primrarly used with the Samba package under UNIX or for pointing * the caller to the existing WINS server on a Windows NT platform. */ static int setwinsaddr(argv) char **argv; { struct in_addr ina; struct hostent *hp; if (inet_aton(*argv, &ina) == 0) { if ((hp = gethostbyname(*argv)) == NULL) { option_error("invalid address parameter '%s' for ms-wins option", *argv); return (0); } ina.s_addr = *(u_int32_t *)hp->h_addr; } /* if there is no primary then update it. */ if (ipcp_allowoptions[0].winsaddr[0] == 0) ipcp_allowoptions[0].winsaddr[0] = ina.s_addr; /* always set the secondary address value to the same value. */ ipcp_allowoptions[0].winsaddr[1] = ina.s_addr; return (1); } #ifdef IPX_CHANGE static int setipxrouter (argv) char **argv; { ipxcp_wantoptions[0].neg_router = 1; ipxcp_allowoptions[0].neg_router = 1; return int_option(*argv, &ipxcp_wantoptions[0].router); } static int setipxname (argv) char **argv; { char *dest = ipxcp_wantoptions[0].name; char *src = *argv; int count; char ch; ipxcp_wantoptions[0].neg_name = 1; ipxcp_allowoptions[0].neg_name = 1; memset (dest, '\0', sizeof (ipxcp_wantoptions[0].name)); count = 0; while (*src) { ch = *src++; if (! isalnum (ch) && ch != '_') { option_error("IPX router name must be alphanumeric or _"); return 0; } if (count >= sizeof (ipxcp_wantoptions[0].name)) { option_error("IPX router name is limited to %d characters", sizeof (ipxcp_wantoptions[0].name) - 1); return 0; } dest[count++] = toupper (ch); } return 1; } static int setipxcptimeout (argv) char **argv; { return int_option(*argv, &ipxcp_fsm[0].timeouttime); } static int setipxcpterm (argv) char **argv; { return int_option(*argv, &ipxcp_fsm[0].maxtermtransmits); } static int setipxcpconf (argv) char **argv; { return int_option(*argv, &ipxcp_fsm[0].maxconfreqtransmits); } static int setipxcpfails (argv) char **argv; { return int_option(*argv, &ipxcp_fsm[0].maxnakloops); } static int setipxnetwork(argv) char **argv; { u_int32_t v; if (!number_option(*argv, &v, 16)) return 0; ipxcp_wantoptions[0].our_network = (int) v; ipxcp_wantoptions[0].neg_nn = 1; return 1; } static int setipxanet(argv) char **argv; { ipxcp_wantoptions[0].accept_network = 1; ipxcp_allowoptions[0].accept_network = 1; return 1; } static int setipxalcl(argv) char **argv; { ipxcp_wantoptions[0].accept_local = 1; ipxcp_allowoptions[0].accept_local = 1; return 1; } static int setipxarmt(argv) char **argv; { ipxcp_wantoptions[0].accept_remote = 1; ipxcp_allowoptions[0].accept_remote = 1; return 1; } static u_char * setipxnodevalue(src,dst) u_char *src, *dst; { int indx; int item; for (;;) { if (!isxdigit (*src)) break; for (indx = 0; indx < 5; ++indx) { dst[indx] <<= 4; dst[indx] |= (dst[indx + 1] >> 4) & 0x0F; } item = toupper (*src) - '0'; if (item > 9) item -= 7; dst[5] = (dst[5] << 4) | item; ++src; } return src; } static int setipxnode(argv) char **argv; { char *end; memset (&ipxcp_wantoptions[0].our_node[0], 0, 6); memset (&ipxcp_wantoptions[0].his_node[0], 0, 6); end = setipxnodevalue (*argv, &ipxcp_wantoptions[0].our_node[0]); if (*end == ':') end = setipxnodevalue (++end, &ipxcp_wantoptions[0].his_node[0]); if (*end == '\0') { ipxcp_wantoptions[0].neg_node = 1; return 1; } option_error("invalid parameter '%s' for ipx-node option", *argv); return 0; } static int setipxproto(argv) char **argv; { ipxcp_protent.enabled_flag = 1; return 1; } static int resetipxproto(argv) char **argv; { ipxcp_protent.enabled_flag = 0; return 1; } #else static int resetipxproto(argv) char **argv; { return 1; } #endif /* IPX_CHANGE */ #ifdef MSLANMAN static int setmslanman(argv) char **argv; { ms_lanman = 1; return (1); } #endif