sbin/spppcontrol/spppcontrol.c

   1 /*
   2  * Copyright (c) 1997, 2001 Joerg Wunsch
   3  *
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/sbin/spppcontrol/spppcontrol.c,v 1.7.2.2 2002/04/24 18:47:22 joerg Exp $
  27  */
  28
  29 #include <sys/types.h>
  30 #include <sys/ioctl.h>
  31 #include <sys/socket.h>
  32
  33 #include <net/if.h>
  34 #include <net/if_var.h>
  35 #include <net/sppp/if_sppp.h>
  36
  37 #include <err.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <sysexits.h>
  42 #include <unistd.h>
  43
  44 static void usage(void);
  45 void    print_vals(const char *ifname, struct spppreq *sp);
  46 const char *phase_name(enum ppp_phase phase);
  47 const char *proto_name(u_short proto);
  48 const char *authflags(u_short flags);
  49
  50 #define PPP_PAP         0xc023
  51 #define PPP_CHAP        0xc223
  52
  53 int
  54 main(int argc, char **argv)
  55 {
  56         int s, c;
  57         int errs = 0, verbose = 0;
  58         size_t off;
  59         long to;
  60         char *endp;
  61         const char *ifname, *cp;
  62         struct ifreq ifr;
  63         struct spppreq spr;
  64
  65         while ((c = getopt(argc, argv, "v")) != -1)
  66                 switch (c) {
  67                 case 'v':
  68                         verbose++;
  69                         break;
  70
  71                 default:
  72                         errs++;
  73                         break;
  74                 }
  75         argv += optind;
  76         argc -= optind;
  77
  78         if (errs || argc < 1)
  79                 usage();
  80
  81         ifname = argv[0];
  82         strncpy(ifr.ifr_name, ifname, sizeof ifr.ifr_name);
  83
  84         /* use a random AF to create the socket */
  85         if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
  86                 err(EX_UNAVAILABLE, "ifconfig: socket");
  87
  88         argc--;
  89         argv++;
  90
  91         spr.cmd = (uintptr_t)SPPPIOGDEFS;
  92         ifr.ifr_data = (caddr_t)&spr;
  93
  94         if (ioctl(s, SIOCGIFGENERIC, &ifr) == -1)
  95                 err(EX_OSERR, "SIOCGIFGENERIC(SPPPIOGDEFS)");
  96
  97         if (argc == 0) {
  98                 /* list only mode */
  99                 print_vals(ifname, &spr);
 100                 return 0;
 101         }
 102
 103 #define startswith(s) strncmp(argv[0], s, (off = strlen(s))) == 0
 104
 105         while (argc > 0) {
 106                 if (startswith("authproto=")) {
 107                         cp = argv[0] + off;
 108                         if (strcmp(cp, "pap") == 0)
 109                                 spr.defs.myauth.proto =
 110                                         spr.defs.hisauth.proto = PPP_PAP;
 111                         else if (strcmp(cp, "chap") == 0)
 112                                 spr.defs.myauth.proto =
 113                                         spr.defs.hisauth.proto = PPP_CHAP;
 114                         else if (strcmp(cp, "none") == 0)
 115                                 spr.defs.myauth.proto =
 116                                         spr.defs.hisauth.proto = 0;
 117                         else
 118                                 errx(EX_DATAERR, "bad auth proto: %s", cp);
 119                 } else if (startswith("myauthproto=")) {
 120                         cp = argv[0] + off;
 121                         if (strcmp(cp, "pap") == 0)
 122                                 spr.defs.myauth.proto = PPP_PAP;
 123                         else if (strcmp(cp, "chap") == 0)
 124                                 spr.defs.myauth.proto = PPP_CHAP;
 125                         else if (strcmp(cp, "none") == 0)
 126                                 spr.defs.myauth.proto = 0;
 127                         else
 128                                 errx(EX_DATAERR, "bad auth proto: %s", cp);
 129                 } else if (startswith("myauthname="))
 130                         strncpy(spr.defs.myauth.name, argv[0] + off,
 131                                 AUTHNAMELEN);
 132                 else if (startswith("myauthsecret=") ||
 133                          startswith("myauthkey="))
 134                         strncpy(spr.defs.myauth.secret, argv[0] + off,
 135                                 AUTHKEYLEN);
 136                 else if (startswith("hisauthproto=")) {
 137                         cp = argv[0] + off;
 138                         if (strcmp(cp, "pap") == 0)
 139                                 spr.defs.hisauth.proto = PPP_PAP;
 140                         else if (strcmp(cp, "chap") == 0)
 141                                 spr.defs.hisauth.proto = PPP_CHAP;
 142                         else if (strcmp(cp, "none") == 0)
 143                                 spr.defs.hisauth.proto = 0;
 144                         else
 145                                 errx(EX_DATAERR, "bad auth proto: %s", cp);
 146                 } else if (startswith("hisauthname="))
 147                         strncpy(spr.defs.hisauth.name, argv[0] + off,
 148                                 AUTHNAMELEN);
 149                 else if (startswith("hisauthsecret=") ||
 150                          startswith("hisauthkey="))
 151                         strncpy(spr.defs.hisauth.secret, argv[0] + off,
 152                                 AUTHKEYLEN);
 153                 else if (strcmp(argv[0], "callin") == 0)
 154                         spr.defs.hisauth.flags |= AUTHFLAG_NOCALLOUT;
 155                 else if (strcmp(argv[0], "always") == 0)
 156                         spr.defs.hisauth.flags &= ~AUTHFLAG_NOCALLOUT;
 157                 else if (strcmp(argv[0], "norechallenge") == 0)
 158                         spr.defs.hisauth.flags |= AUTHFLAG_NORECHALLENGE;
 159                 else if (strcmp(argv[0], "rechallenge") == 0)
 160                         spr.defs.hisauth.flags &= ~AUTHFLAG_NORECHALLENGE;
 161                 else if (startswith("lcp-timeout=")) {
 162                         cp = argv[0] + off;
 163                         to = strtol(cp, &endp, 10);
 164                         if (*cp == '\0' || *endp != '\0' ||
 165                             /*
 166                              * NB: 10 ms is the minimal possible value for
 167                              * hz=100.  We assume no kernel has less clock
 168                              * frequency than that...
 169                              */
 170                             to < 10 || to > 20000)
 171                                 errx(EX_DATAERR, "bad lcp timeout value: %s",
 172                                      cp);
 173                         spr.defs.lcp.timeout = to;
 174                 } else if (strcmp(argv[0], "enable-vj") == 0)
 175                         spr.defs.enable_vj = 1;
 176                 else if (strcmp(argv[0], "disable-vj") == 0)
 177                         spr.defs.enable_vj = 0;
 178                 else if (strcmp(argv[0], "enable-ipv6") == 0)
 179                         spr.defs.enable_ipv6 = 1;
 180                 else if (strcmp(argv[0], "disable-ipv6") == 0)
 181                         spr.defs.enable_ipv6 = 0;
 182                 else
 183                         errx(EX_DATAERR, "bad parameter: \"%s\"", argv[0]);
 184
 185                 argv++;
 186                 argc--;
 187         }
 188
 189         spr.cmd = (uintptr_t)SPPPIOSDEFS;
 190
 191         if (ioctl(s, SIOCSIFGENERIC, &ifr) == -1)
 192                 err(EX_OSERR, "SIOCSIFGENERIC(SPPPIOSDEFS)");
 193
 194         if (verbose)
 195                 print_vals(ifname, &spr);
 196
 197         return 0;
 198 }
 199
 200 static void
 201 usage(void)
 202 {
 203         fprintf(stderr, "%s\n%s\n",
 204         "usage: spppcontrol [-v] ifname [{my|his}auth{proto|name|secret}=...]",
 205         "       spppcontrol [-v] ifname callin|always");
 206         exit(EX_USAGE);
 207 }
 208
 209 void
 210 print_vals(const char *ifname, struct spppreq *sp)
 211 {
 212         printf("%s:\tphase=%s\n", ifname, phase_name(sp->defs.pp_phase));
 213         if (sp->defs.myauth.proto) {
 214                 printf("\tmyauthproto=%s myauthname=\"%.*s\"\n",
 215                        proto_name(sp->defs.myauth.proto),
 216                        AUTHNAMELEN, sp->defs.myauth.name);
 217         }
 218         if (sp->defs.hisauth.proto) {
 219                 printf("\thisauthproto=%s hisauthname=\"%.*s\"%s\n",
 220                        proto_name(sp->defs.hisauth.proto),
 221                        AUTHNAMELEN, sp->defs.hisauth.name,
 222                        authflags(sp->defs.hisauth.flags));
 223         }
 224         printf("\tlcp-timeout=%d ms\n", sp->defs.lcp.timeout);
 225         printf("\t%sable-vj\n", sp->defs.enable_vj? "en": "dis");
 226         printf("\t%sable-ipv6\n", sp->defs.enable_ipv6? "en": "dis");
 227 }
 228
 229 const char *
 230 phase_name(enum ppp_phase phase)
 231 {
 232         switch (phase) {
 233         case PHASE_DEAD:        return "dead";
 234         case PHASE_ESTABLISH:   return "establish";
 235         case PHASE_TERMINATE:   return "terminate";
 236         case PHASE_AUTHENTICATE: return "authenticate";
 237         case PHASE_NETWORK:     return "network";
 238         }
 239         return "illegal";
 240 }
 241
 242 const char *
 243 proto_name(u_short proto)
 244 {
 245         static char buf[12];
 246         switch (proto) {
 247         case PPP_PAP:   return "pap";
 248         case PPP_CHAP:  return "chap";
 249         }
 250         sprintf(buf, "0x%x", (unsigned)proto);
 251         return buf;
 252 }
 253
 254 const char *
 255 authflags(u_short flags)
 256 {
 257         static char buf[30];
 258         buf[0] = '\0';
 259         if (flags & AUTHFLAG_NOCALLOUT)
 260                 strcat(buf, " callin");
 261         if (flags & AUTHFLAG_NORECHALLENGE)
 262                 strcat(buf, " norechallenge");
 263         return buf;
 264 }