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  * $DragonFly: src/sbin/spppcontrol/spppcontrol.c,v 1.3 2003/08/08 04:18:41 dillon Exp $
  28  */
  29
  30 #include <sys/types.h>
  31 #include <sys/ioctl.h>
  32 #include <sys/socket.h>
  33
  34 #include <net/if.h>
  35 #include <net/if_var.h>
  36 #include <net/sppp/if_sppp.h>
  37
  38 #include <err.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <sysexits.h>
  43 #include <unistd.h>
  44
  45 static void usage(void);
  46 void    print_vals(const char *ifname, struct spppreq *sp);
  47 const char *phase_name(enum ppp_phase phase);
  48 const char *proto_name(u_short proto);
  49 const char *authflags(u_short flags);
  50
  51 #define PPP_PAP         0xc023
  52 #define PPP_CHAP        0xc223
  53
  54 int
  55 main(int argc, char **argv)
  56 {
  57         int s, c;
  58         int errs = 0, verbose = 0;
  59         size_t off;
  60         long to;
  61         char *endp;
  62         const char *ifname, *cp;
  63         struct ifreq ifr;
  64         struct spppreq spr;
  65
  66         while ((c = getopt(argc, argv, "v")) != -1)
  67                 switch (c) {
  68                 case 'v':
  69                         verbose++;
  70                         break;
  71
  72                 default:
  73                         errs++;
  74                         break;
  75                 }
  76         argv += optind;
  77         argc -= optind;
  78
  79         if (errs || argc < 1)
  80                 usage();
  81
  82         ifname = argv[0];
  83         strncpy(ifr.ifr_name, ifname, sizeof ifr.ifr_name);
  84
  85         /* use a random AF to create the socket */
  86         if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
  87                 err(EX_UNAVAILABLE, "ifconfig: socket");
  88
  89         argc--;
  90         argv++;
  91
  92         spr.cmd = (int)SPPPIOGDEFS;
  93         ifr.ifr_data = (caddr_t)&spr;
  94
  95         if (ioctl(s, SIOCGIFGENERIC, &ifr) == -1)
  96                 err(EX_OSERR, "SIOCGIFGENERIC(SPPPIOGDEFS)");
  97
  98         if (argc == 0) {
  99                 /* list only mode */
 100                 print_vals(ifname, &spr);
 101                 return 0;
 102         }
 103
 104 #define startswith(s) strncmp(argv[0], s, (off = strlen(s))) == 0
 105
 106         while (argc > 0) {
 107                 if (startswith("authproto=")) {
 108                         cp = argv[0] + off;
 109                         if (strcmp(cp, "pap") == 0)
 110                                 spr.defs.myauth.proto =
 111                                         spr.defs.hisauth.proto = PPP_PAP;
 112                         else if (strcmp(cp, "chap") == 0)
 113                                 spr.defs.myauth.proto =
 114                                         spr.defs.hisauth.proto = PPP_CHAP;
 115                         else if (strcmp(cp, "none") == 0)
 116                                 spr.defs.myauth.proto =
 117                                         spr.defs.hisauth.proto = 0;
 118                         else
 119                                 errx(EX_DATAERR, "bad auth proto: %s", cp);
 120                 } else if (startswith("myauthproto=")) {
 121                         cp = argv[0] + off;
 122                         if (strcmp(cp, "pap") == 0)
 123                                 spr.defs.myauth.proto = PPP_PAP;
 124                         else if (strcmp(cp, "chap") == 0)
 125                                 spr.defs.myauth.proto = PPP_CHAP;
 126                         else if (strcmp(cp, "none") == 0)
 127                                 spr.defs.myauth.proto = 0;
 128                         else
 129                                 errx(EX_DATAERR, "bad auth proto: %s", cp);
 130                 } else if (startswith("myauthname="))
 131                         strncpy(spr.defs.myauth.name, argv[0] + off,
 132                                 AUTHNAMELEN);
 133                 else if (startswith("myauthsecret=") ||
 134                          startswith("myauthkey="))
 135                         strncpy(spr.defs.myauth.secret, argv[0] + off,
 136                                 AUTHKEYLEN);
 137                 else if (startswith("hisauthproto=")) {
 138                         cp = argv[0] + off;
 139                         if (strcmp(cp, "pap") == 0)
 140                                 spr.defs.hisauth.proto = PPP_PAP;
 141                         else if (strcmp(cp, "chap") == 0)
 142                                 spr.defs.hisauth.proto = PPP_CHAP;
 143                         else if (strcmp(cp, "none") == 0)
 144                                 spr.defs.hisauth.proto = 0;
 145                         else
 146                                 errx(EX_DATAERR, "bad auth proto: %s", cp);
 147                 } else if (startswith("hisauthname="))
 148                         strncpy(spr.defs.hisauth.name, argv[0] + off,
 149                                 AUTHNAMELEN);
 150                 else if (startswith("hisauthsecret=") ||
 151                          startswith("hisauthkey="))
 152                         strncpy(spr.defs.hisauth.secret, argv[0] + off,
 153                                 AUTHKEYLEN);
 154                 else if (strcmp(argv[0], "callin") == 0)
 155                         spr.defs.hisauth.flags |= AUTHFLAG_NOCALLOUT;
 156                 else if (strcmp(argv[0], "always") == 0)
 157                         spr.defs.hisauth.flags &= ~AUTHFLAG_NOCALLOUT;
 158                 else if (strcmp(argv[0], "norechallenge") == 0)
 159                         spr.defs.hisauth.flags |= AUTHFLAG_NORECHALLENGE;
 160                 else if (strcmp(argv[0], "rechallenge") == 0)
 161                         spr.defs.hisauth.flags &= ~AUTHFLAG_NORECHALLENGE;
 162                 else if (startswith("lcp-timeout=")) {
 163                         cp = argv[0] + off;
 164                         to = strtol(cp, &endp, 10);
 165                         if (*cp == '\0' || *endp != '\0' ||
 166                             /*
 167                              * NB: 10 ms is the minimal possible value for
 168                              * hz=100.  We assume no kernel has less clock
 169                              * frequency than that...
 170                              */
 171                             to < 10 || to > 20000)
 172                                 errx(EX_DATAERR, "bad lcp timeout value: %s",
 173                                      cp);
 174                         spr.defs.lcp.timeout = to;
 175                 } else if (strcmp(argv[0], "enable-vj") == 0)
 176                         spr.defs.enable_vj = 1;
 177                 else if (strcmp(argv[0], "disable-vj") == 0)
 178                         spr.defs.enable_vj = 0;
 179                 else if (strcmp(argv[0], "enable-ipv6") == 0)
 180                         spr.defs.enable_ipv6 = 1;
 181                 else if (strcmp(argv[0], "disable-ipv6") == 0)
 182                         spr.defs.enable_ipv6 = 0;
 183                 else
 184                         errx(EX_DATAERR, "bad parameter: \"%s\"", argv[0]);
 185
 186                 argv++;
 187                 argc--;
 188         }
 189
 190         spr.cmd = (int)SPPPIOSDEFS;
 191
 192         if (ioctl(s, SIOCSIFGENERIC, &ifr) == -1)
 193                 err(EX_OSERR, "SIOCSIFGENERIC(SPPPIOSDEFS)");
 194
 195         if (verbose)
 196                 print_vals(ifname, &spr);
 197
 198         return 0;
 199 }
 200
 201 static void
 202 usage(void)
 203 {
 204         fprintf(stderr, "%s\n%s\n",
 205         "usage: spppcontrol [-v] ifname [{my|his}auth{proto|name|secret}=...]",
 206         "       spppcontrol [-v] ifname callin|always");
 207         exit(EX_USAGE);
 208 }
 209
 210 void
 211 print_vals(const char *ifname, struct spppreq *sp)
 212 {
 213         printf("%s:\tphase=%s\n", ifname, phase_name(sp->defs.pp_phase));
 214         if (sp->defs.myauth.proto) {
 215                 printf("\tmyauthproto=%s myauthname=\"%.*s\"\n",
 216                        proto_name(sp->defs.myauth.proto),
 217                        AUTHNAMELEN, sp->defs.myauth.name);
 218         }
 219         if (sp->defs.hisauth.proto) {
 220                 printf("\thisauthproto=%s hisauthname=\"%.*s\"%s\n",
 221                        proto_name(sp->defs.hisauth.proto),
 222                        AUTHNAMELEN, sp->defs.hisauth.name,
 223                        authflags(sp->defs.hisauth.flags));
 224         }
 225         printf("\tlcp-timeout=%d ms\n", sp->defs.lcp.timeout);
 226         printf("\t%sable-vj\n", sp->defs.enable_vj? "en": "dis");
 227         printf("\t%sable-ipv6\n", sp->defs.enable_ipv6? "en": "dis");
 228 }
 229
 230 const char *
 231 phase_name(enum ppp_phase phase)
 232 {
 233         switch (phase) {
 234         case PHASE_DEAD:        return "dead";
 235         case PHASE_ESTABLISH:   return "establish";
 236         case PHASE_TERMINATE:   return "terminate";
 237         case PHASE_AUTHENTICATE: return "authenticate";
 238         case PHASE_NETWORK:     return "network";
 239         }
 240         return "illegal";
 241 }
 242
 243 const char *
 244 proto_name(u_short proto)
 245 {
 246         static char buf[12];
 247         switch (proto) {
 248         case PPP_PAP:   return "pap";
 249         case PPP_CHAP:  return "chap";
 250         }
 251         sprintf(buf, "0x%x", (unsigned)proto);
 252         return buf;
 253 }
 254
 255 const char *
 256 authflags(u_short flags)
 257 {
 258         static char buf[30];
 259         buf[0] = '\0';
 260         if (flags & AUTHFLAG_NOCALLOUT)
 261                 strcat(buf, " callin");
 262         if (flags & AUTHFLAG_NORECHALLENGE)
 263                 strcat(buf, " norechallenge");
 264         return buf;
 265 }