src/main/radmin.c

   1 /*
   2  * radmin.c     RADIUS Administration tool.
   3  *
   4  * Version:     $Id$
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of the GNU General Public License as published by
   8  *   the Free Software Foundation; either version 2 of the License, or
   9  *   (at your option) any later version.
  10  *
  11  *   This program is distributed in the hope that it will be useful,
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *   GNU General Public License for more details.
  15  *
  16  *   You should have received a copy of the GNU General Public License
  17  *   along with this program; if not, write to the Free Software
  18  *   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * Copyright 2008   The FreeRADIUS server project
  21  * Copyright 2008   Alan DeKok <aland@deployingradius.com>
  22  */
  23
  24 #include <freeradius-devel/ident.h>
  25 RCSID("$Id$")
  26
  27 #include <freeradius-devel/radiusd.h>
  28 #include <freeradius-devel/radpaths.h>
  29
  30 #ifdef HAVE_READLINE_READLINE_H
  31 #include <readline/readline.h>
  32 #include <readline/history.h>
  33 #endif
  34
  35 #ifdef HAVE_SYS_SOCKET_H
  36 #include <sys/socket.h>
  37 #endif
  38
  39 #ifdef HAVE_SYS_UN_H
  40 #include <sys/un.h>
  41 #endif
  42
  43 #ifdef HAVE_GETOPT_H
  44 #include <getopt.h>
  45 #endif
  46
  47 /*
  48  *      For configuration file stuff.
  49  */
  50 const char *radius_dir = RADDBDIR;
  51 const char *progname = "radmin";
  52
  53 /*
  54  *      The rest of this is because the conffile.c, etc. assume
  55  *      they're running inside of the server.  And we don't (yet)
  56  *      have a "libfreeradius-server", or "libfreeradius-util".
  57  */
  58 int debug_flag = 0;
  59 struct main_config_t mainconfig;
  60 char *request_log_file = NULL;
  61 char *debug_log_file = NULL;
  62 int radius_xlat(UNUSED char *out, UNUSED int outlen, UNUSED const char *fmt,
  63                 UNUSED REQUEST *request, UNUSED RADIUS_ESCAPE_STRING func)
  64 {
  65         return -1;
  66 }
  67
  68 static int fr_domain_socket(const char *path)
  69 {
  70         int sockfd;
  71         size_t len;
  72         socklen_t socklen;
  73         struct sockaddr_un saremote;
  74
  75         len = strlen(path);
  76         if (len >= sizeof(saremote.sun_path)) {
  77                 fprintf(stderr, "%s: Path too long in filename\n", progname);
  78                 return -1;
  79         }
  80
  81         if ((sockfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
  82                 fprintf(stderr, "%s: Failed creating socket: %s\n",
  83                         progname, strerror(errno));
  84                 return -1;
  85         }
  86
  87         saremote.sun_family = AF_UNIX;
  88         memcpy(saremote.sun_path, path, len); /* not zero terminated */
  89
  90         socklen = sizeof(saremote.sun_family) + len;
  91
  92         if (connect(sockfd, (struct sockaddr *)&saremote, socklen) < 0) {
  93                 fprintf(stderr, "%s: Failed connecting to %s: %s\n",
  94                         progname, path, strerror(errno));
  95                 close(sockfd);
  96                 return -1;
  97         }
  98
  99 #ifdef O_NONBLOCK
 100         {
 101                 int flags;
 102
 103                 if ((flags = fcntl(sockfd, F_GETFL, NULL)) < 0)  {
 104                         fprintf(stderr, "%s: Failure getting socket flags: %s",
 105                                 progname, strerror(errno));
 106                         close(sockfd);
 107                         return -1;
 108                 }
 109
 110                 flags |= O_NONBLOCK;
 111                 if( fcntl(sockfd, F_SETFL, flags) < 0) {
 112                         fprintf(stderr, "%s: Failure setting socket flags: %s",
 113                                 progname, strerror(errno));
 114                         close(sockfd);
 115                         return -1;
 116                 }
 117         }
 118 #endif
 119
 120         return sockfd;
 121 }
 122
 123 static int usage(void)
 124 {
 125         printf("Usage: %s [ -d raddb_dir ] [ -f socket_file ] [ -n name ] [ -q ]\n", progname);
 126         printf("  -d raddb_dir    Configuration files are in \"raddbdir/*\".\n");
 127         printf("  -f socket_file  Open socket_file directly, without reading radius.conf\n");
 128         printf("  -n name         Read raddb/name.conf instead of raddb/radiusd.conf\n");
 129         printf("  -q              Quiet mode.\n");
 130
 131         exit(1);
 132 }
 133
 134 int main(int argc, char **argv)
 135 {
 136         int argval, quiet = 0;
 137         int done_license = 0;
 138         int sockfd, port;
 139         uint32_t magic;
 140         char *line;
 141         ssize_t len, size;
 142         const char *file = NULL;
 143         const char *name = "radiusd";
 144         char *p, buffer[2048];
 145
 146         if ((progname = strrchr(argv[0], FR_DIR_SEP)) == NULL)
 147                 progname = argv[0];
 148         else
 149                 progname++;
 150
 151         while ((argval = getopt(argc, argv, "d:hf:n:q")) != EOF) {
 152                 switch(argval) {
 153                 case 'd':
 154                         if (file) {
 155                                 fprintf(stderr, "%s: -d and -f cannot be used together.\n", progname);
 156                                 exit(1);
 157                         }
 158                         radius_dir = optarg;
 159                         break;
 160
 161                 case 'f':
 162                         radius_dir = NULL;
 163                         file = optarg;
 164                         break;
 165
 166                 default:
 167                 case 'h':
 168                         usage();
 169                         break;
 170
 171                 case 'n':
 172                         name = optarg;
 173                         break;
 174
 175                 case 'q':
 176                         quiet = 1;
 177                         break;
 178                 }
 179         }
 180
 181         if (radius_dir) {
 182                 int rcode;
 183                 CONF_SECTION *cs, *subcs;
 184
 185                 file = NULL;    /* MUST read it from the conffile now */
 186
 187                 snprintf(buffer, sizeof(buffer), "%s/%s.conf",
 188                          radius_dir, name);
 189
 190                 cs = cf_file_read(buffer);
 191                 if (!cs) {
 192                         fprintf(stderr, "%s: Errors reading %s\n",
 193                                 progname, buffer);
 194                         exit(1);
 195                 }
 196
 197                 subcs = NULL;
 198                 while ((subcs = cf_subsection_find_next(cs, subcs, "listen")) != NULL) {
 199                         const char *value;
 200                         CONF_PAIR *cp = cf_pair_find(subcs, "type");
 201
 202                         if (!cp) continue;
 203
 204                         value = cf_pair_value(cp);
 205                         if (!value) continue;
 206
 207                         if (strcmp(value, "control") != 0) continue;
 208
 209                         /*
 210                          *      Now find the socket name (sigh)
 211                          */
 212                         rcode = cf_item_parse(subcs, "socket",
 213                                               PW_TYPE_STRING_PTR,
 214                                               &file, NULL);
 215                         if (rcode < 0) {
 216                                 fprintf(stderr, "%s: Failed parsing listen section\n", progname);
 217                                 exit(1);
 218                         }
 219
 220                         if (!file) {
 221                                 fprintf(stderr, "%s: No path given for socket\n",
 222                                         progname);
 223                                 exit(1);
 224                         }
 225                         break;
 226                 }
 227
 228                 if (!file) {
 229                         fprintf(stderr, "%s: Could not find control socket in %s\n",
 230                                 progname, buffer);
 231                         exit(1);
 232                 }
 233         }
 234
 235         if (!isatty(STDIN_FILENO)) quiet = 1;
 236
 237 #ifdef HAVE_READLINE_READLINE_H
 238         if (!quiet) {
 239                 using_history();
 240                 rl_bind_key('\t', rl_insert);
 241         }
 242 #endif
 243
 244  reconnect:
 245         /*
 246          *      FIXME: Get destination from command line, if possible?
 247          */
 248         sockfd = fr_domain_socket(file);
 249         if (sockfd < 0) {
 250                 exit(1);
 251         }
 252
 253         /*
 254          *      Read initial magic && version information.
 255          */
 256         for (size = 0; size < 8; size += len) {
 257                 len = read(sockfd, buffer + size, 8 - size);
 258                 if (len < 0) {
 259                         fprintf(stderr, "%s: Error reading initial data from socket: %s\n",
 260                                 progname, strerror(errno));
 261                         exit(1);
 262                 }
 263         }
 264
 265         memcpy(&magic, buffer, 4);
 266         magic = ntohl(magic);
 267         if (magic != 0xf7eead15) {
 268                 fprintf(stderr, "%s: Socket %s is not FreeRADIUS administration socket\n", progname, file);
 269                 exit(1);
 270         }
 271
 272         memcpy(&magic, buffer + 4, 4);
 273         magic = ntohl(magic);
 274         if (magic != 1) {
 275                 fprintf(stderr, "%s: Socket version mismatch: Need 1, got %d\n",
 276                         progname, magic);
 277                 exit(1);
 278         }
 279
 280         if (!done_license && !quiet) {
 281                 printf("radmin " RADIUSD_VERSION " - FreeRADIUS Server administration tool.\n");
 282                 printf("Copyright (C) 2008 The FreeRADIUS server project and contributors.\n");
 283                 printf("There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n");
 284                 printf("PARTICULAR PURPOSE.\n");
 285                 printf("You may redistribute copies of FreeRADIUS under the terms of the\n");
 286                 printf("GNU General Public License v2.\n");
 287
 288                 done_license = 1;
 289         }
 290
 291         /*
 292          *      FIXME: Do login?
 293          */
 294
 295         while (1) {
 296                 if (!quiet) {
 297 #ifndef HAVE_READLINE_READLINE_H
 298                         printf("radmin> ");
 299                         fflush(stdout);
 300 #else
 301                         line = readline("radmin> ");
 302
 303                         if (!line) break;
 304
 305                         if (!*line) {
 306                                 free(line);
 307                                 continue;
 308                         }
 309
 310                         add_history(line);
 311 #endif
 312                 } else {        /* quiet, or no readline */
 313
 314                         line = fgets(buffer, sizeof(buffer), stdin);
 315                         if (!line) break;
 316
 317                         p = strchr(buffer, '\n');
 318                         if (!p) {
 319                                 fprintf(stderr, "%s: Input line too long\n",
 320                                         progname);
 321                                 exit(1);
 322                         }
 323
 324                         *p = '\0';
 325                 }
 326
 327                 if (strcmp(line, "reconnect") == 0) {
 328                         close(sockfd);
 329                         goto reconnect;
 330                 }
 331
 332                 /*
 333                  *      Write the text to the socket.
 334                  */
 335                 if (write(sockfd, line, strlen(line)) < 0) break;
 336                 if (write(sockfd, "\r\n", 2) < 0) break;
 337
 338                 /*
 339                  *      Exit, done, etc.
 340                  */
 341                 if ((strcmp(line, "exit") == 0) ||
 342                     (strcmp(line, "quit") == 0)) {
 343                         break;
 344                 }
 345
 346                 /*
 347                  *      Read the response
 348                  */
 349                 size = 0;
 350                 buffer[0] = '\0';
 351
 352                 port = 1;
 353                 memset(buffer, 0, sizeof(buffer));
 354
 355                 while (port == 1) {
 356                         int rcode;
 357                         fd_set readfds;
 358
 359                         FD_ZERO(&readfds);
 360                         FD_SET(sockfd, &readfds);
 361
 362                         rcode = select(sockfd + 1, &readfds, NULL, NULL, NULL);
 363                         if (rcode < 0) {
 364                                 if (errno == EINTR) continue;
 365
 366                                 fprintf(stderr, "%s: Failed selecting: %s\n",
 367                                         progname, strerror(errno));
 368                                 exit(1);
 369                         }
 370
 371                         len = recv(sockfd, buffer + size,
 372                                    sizeof(buffer) - size - 1, MSG_DONTWAIT);
 373                         if (len < 0) {
 374                                 /*
 375                                  *      No data: keep looping
 376                                  */
 377                                 if ((errno == EAGAIN) || (errno == EINTR)) {
 378                                         continue;
 379                                 }
 380
 381                                 fprintf(stderr, "%s: Error reading socket: %s\n",
 382                                         progname, strerror(errno));
 383                                 exit(1);
 384                         }
 385                         if (len == 0) break; /* clean close of socket */
 386
 387                         size += len;
 388                         buffer[size] = '\0';
 389
 390                         /*
 391                          *      There really has to be a better way of
 392                          *      doing this.
 393                          */
 394                         p = strstr(buffer, "radmin> ");
 395                         if (p &&
 396                             ((p == buffer) ||
 397                              (p[-1] == '\n') ||
 398                              (p[-1] == '\r'))) {
 399                                 *p = '\0';
 400
 401                                 if (p[-1] == '\n') p[-1] = '\0';
 402
 403                                 port = 0;
 404                                 break;
 405                         }
 406                 }
 407
 408                 /*
 409                  *      Blank prompt.  Go get another line.
 410                  */
 411                 if (!buffer[0]) continue;
 412
 413                 buffer[size] = '\0'; /* this is at least right */
 414                 puts(buffer);
 415                 fflush(stdout);
 416         }
 417
 418         printf("\n");
 419
 420         return 0;
 421 }
 422