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_SYS_SOCKET_H
  31 #include <sys/socket.h>
  32 #endif
  33
  34 #ifdef HAVE_SYS_UN_H
  35 #include <sys/un.h>
  36 #ifndef SUN_LEN
  37 #define SUN_LEN(su)  (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
  38 #endif
  39 #endif
  40
  41 #ifdef HAVE_GETOPT_H
  42 #include <getopt.h>
  43 #endif
  44
  45 #ifdef HAVE_SYS_STAT_H
  46 #include <sys/stat.h>
  47 #endif
  48
  49 #ifdef HAVE_LIBREADLINE
  50
  51 #if defined(HAVE_READLINE_READLINE_H)
  52 #include <readline/readline.h>
  53 #define USE_READLINE (1)
  54 #elif defined(HAVE_READLINE_H)
  55 #include <readline.h>
  56 #define USE_READLINE (1)
  57 #endif /* !defined(HAVE_READLINE_H) */
  58
  59 #endif /* HAVE_LIBREADLINE */
  60
  61 #ifdef HAVE_READLINE_HISTORY
  62 #if defined(HAVE_READLINE_HISTORY_H)
  63 #include <readline/history.h>
  64 #define USE_READLINE_HISTORY (1)
  65 #elif defined(HAVE_HISTORY_H)
  66 #include <history.h>
  67 #define USE_READLINE_HISTORY (1)
  68 #endif /* defined(HAVE_READLINE_HISTORY_H) */
  69
  70 #endif /* HAVE_READLINE_HISTORY */
  71
  72 /*
  73  *      For configuration file stuff.
  74  */
  75 char *radius_dir = RADDBDIR;
  76 const char *progname = "radmin";
  77
  78 /*
  79  *      The rest of this is because the conffile.c, etc. assume
  80  *      they're running inside of the server.  And we don't (yet)
  81  *      have a "libfreeradius-server", or "libfreeradius-util".
  82  */
  83 int debug_flag = 0;
  84 struct main_config_t mainconfig;
  85 char *request_log_file = NULL;
  86 char *debug_log_file = NULL;
  87 int radius_xlat(UNUSED char *out, UNUSED int outlen, UNUSED const char *fmt,
  88                 UNUSED REQUEST *request, UNUSED RADIUS_ESCAPE_STRING func)
  89 {
  90         return -1;
  91 }
  92 int check_config = FALSE;
  93
  94 static FILE *outputfp = NULL;
  95 static int echo = FALSE;
  96
  97 static int fr_domain_socket(const char *path)
  98 {
  99         int sockfd = -1;
 100 #ifdef HAVE_SYS_UN_H
 101         size_t len;
 102         socklen_t socklen;
 103         struct sockaddr_un saremote;
 104
 105         len = strlen(path);
 106         if (len >= sizeof(saremote.sun_path)) {
 107                 fprintf(stderr, "%s: Path too long in filename\n", progname);
 108                 return -1;
 109         }
 110
 111         if ((sockfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
 112                 fprintf(stderr, "%s: Failed creating socket: %s\n",
 113                         progname, strerror(errno));
 114                 return -1;
 115         }
 116
 117         saremote.sun_family = AF_UNIX;
 118         memcpy(saremote.sun_path, path, len + 1); /* SUN_LEN does strlen */
 119
 120         socklen = SUN_LEN(&saremote);
 121
 122         if (connect(sockfd, (struct sockaddr *)&saremote, socklen) < 0) {
 123                 struct stat buf;
 124
 125                 close(sockfd);
 126                 fprintf(stderr, "%s: Failed connecting to %s: %s\n",
 127                         progname, path, strerror(errno));
 128
 129                 /*
 130                  *      The file doesn't exist.  Tell the user how to
 131                  *      fix it.
 132                  */
 133                 if ((stat(path, &buf) < 0) &&
 134                     (errno == ENOENT)) {
 135                         fprintf(stderr, "  Perhaps you need to run the commands:\n\tcd /etc/raddb\n\tln -s sites-available/control-socket sites-enabled/control-socket\n  and then re-start the server?\n");
 136                 }
 137
 138                 return -1;
 139         }
 140
 141 #ifdef O_NONBLOCK
 142         {
 143                 int flags;
 144
 145                 if ((flags = fcntl(sockfd, F_GETFL, NULL)) < 0)  {
 146                         fprintf(stderr, "%s: Failure getting socket flags: %s",
 147                                 progname, strerror(errno));
 148                         close(sockfd);
 149                         return -1;
 150                 }
 151
 152                 flags |= O_NONBLOCK;
 153                 if( fcntl(sockfd, F_SETFL, flags) < 0) {
 154                         fprintf(stderr, "%s: Failure setting socket flags: %s",
 155                                 progname, strerror(errno));
 156                         close(sockfd);
 157                         return -1;
 158                 }
 159         }
 160 #endif
 161 #endif
 162         return sockfd;
 163 }
 164
 165 static int usage(void)
 166 {
 167         printf("Usage: %s [ args ]\n", progname);
 168         printf("  -d raddb_dir    Configuration files are in \"raddbdir/*\".\n");
 169         printf("  -e command      Execute 'command' and then exit.\n");
 170         printf("  -E              Echo commands as they are being executed.\n");
 171         printf("  -f socket_file  Open socket_file directly, without reading radius.conf\n");
 172         printf("  -i input_file   Read commands from 'input_file'.\n");
 173         printf("  -n name         Read raddb/name.conf instead of raddb/radiusd.conf\n");
 174         printf("  -o output_file  Write commands to 'output_file'.\n");
 175         printf("  -q              Quiet mode.\n");
 176
 177         exit(1);
 178 }
 179
 180 static ssize_t run_command(int sockfd, const char *command,
 181                            char *buffer, size_t bufsize)
 182 {
 183         char *p;
 184         ssize_t size, len;
 185
 186         if (echo) {
 187                 fprintf(outputfp, "%s\n", command);
 188         }
 189
 190         /*
 191          *      Write the text to the socket.
 192          */
 193         if (write(sockfd, command, strlen(command)) < 0) return -1;
 194         if (write(sockfd, "\r\n", 2) < 0) return -1;
 195
 196         /*
 197          *      Read the response
 198          */
 199         size = 0;
 200         buffer[0] = '\0';
 201
 202         memset(buffer, 0, bufsize);
 203
 204         while (1) {
 205                 int rcode;
 206                 fd_set readfds;
 207
 208                 FD_ZERO(&readfds);
 209                 FD_SET(sockfd, &readfds);
 210
 211                 rcode = select(sockfd + 1, &readfds, NULL, NULL, NULL);
 212                 if (rcode < 0) {
 213                         if (errno == EINTR) continue;
 214
 215                         fprintf(stderr, "%s: Failed selecting: %s\n",
 216                                 progname, strerror(errno));
 217                         exit(1);
 218                 }
 219
 220                 if (rcode == 0) {
 221                         fprintf(stderr, "%s: Server closed the connection.\n",
 222                                 progname);
 223                         exit(1);
 224                 }
 225
 226 #ifdef MSG_DONTWAIT
 227                 len = recv(sockfd, buffer + size,
 228                            bufsize - size - 1, MSG_DONTWAIT);
 229 #else
 230                 /*
 231                  *      Read one byte at a time (ugh)
 232                  */
 233                 len = recv(sockfd, buffer + size, 1, 0);
 234 #endif
 235                 if (len < 0) {
 236                         /*
 237                          *      No data: keep looping
 238                          */
 239                         if ((errno == EAGAIN) || (errno == EINTR)) {
 240                                 continue;
 241                         }
 242
 243                         fprintf(stderr, "%s: Error reading socket: %s\n",
 244                                 progname, strerror(errno));
 245                         exit(1);
 246                 }
 247                 if (len == 0) return 0; /* clean exit */
 248
 249                 size += len;
 250                 buffer[size] = '\0';
 251
 252                 /*
 253                  *      There really is a better way of doing this.
 254                  */
 255                 p = strstr(buffer, "radmin> ");
 256                 if (p &&
 257                     ((p == buffer) ||
 258                      (p[-1] == '\n') ||
 259                      (p[-1] == '\r'))) {
 260                         *p = '\0';
 261
 262                         if (p[-1] == '\n') p[-1] = '\0';
 263                         break;
 264                 }
 265         }
 266
 267         /*
 268          *      Blank prompt.  Go get another command.
 269          */
 270         if (!buffer[0]) return 1;
 271
 272         buffer[size] = '\0'; /* this is at least right */
 273
 274         return 2;
 275 }
 276
 277 #define MAX_COMMANDS (4)
 278
 279 int main(int argc, char **argv)
 280 {
 281         int argval, quiet = 0;
 282         int done_license = 0;
 283         int sockfd;
 284         uint32_t magic;
 285         char *line = NULL;
 286         ssize_t len, size;
 287         const char *file = NULL;
 288         const char *name = "radiusd";
 289         char *p, buffer[65536];
 290         const char *input_file = NULL;
 291         FILE *inputfp = stdin;
 292         const char *output_file = NULL;
 293
 294         char *commands[MAX_COMMANDS];
 295         int num_commands = -1;
 296
 297         outputfp = stdout;      /* stdout is not a constant value... */
 298
 299         if ((progname = strrchr(argv[0], FR_DIR_SEP)) == NULL)
 300                 progname = argv[0];
 301         else
 302                 progname++;
 303
 304         while ((argval = getopt(argc, argv, "d:hi:e:Ef:n:o:q")) != EOF) {
 305                 switch(argval) {
 306                 case 'd':
 307                         if (file) {
 308                                 fprintf(stderr, "%s: -d and -f cannot be used together.\n", progname);
 309                                 exit(1);
 310                         }
 311                         radius_dir = optarg;
 312                         break;
 313
 314                 case 'e':
 315                         num_commands++; /* starts at -1 */
 316                         if (num_commands >= MAX_COMMANDS) {
 317                                 fprintf(stderr, "%s: Too many '-e'\n",
 318                                         progname);
 319                                 exit(1);
 320                         }
 321                         commands[num_commands] = optarg;
 322                         break;
 323
 324                 case 'E':
 325                         echo = TRUE;
 326                         break;
 327
 328                 case 'f':
 329                         radius_dir = NULL;
 330                         file = optarg;
 331                         break;
 332
 333                 default:
 334                 case 'h':
 335                         usage();
 336                         break;
 337
 338                 case 'i':
 339                         if (strcmp(optarg, "-") != 0) {
 340                                 input_file = optarg;
 341                         }
 342                         quiet = 1;
 343                         break;
 344
 345                 case 'n':
 346                         name = optarg;
 347                         break;
 348
 349                 case 'o':
 350                         if (strcmp(optarg, "-") != 0) {
 351                                 output_file = optarg;
 352                         }
 353                         quiet = 1;
 354                         break;
 355
 356                 case 'q':
 357                         quiet = 1;
 358                         break;
 359                 }
 360         }
 361
 362         if (radius_dir) {
 363                 int rcode;
 364                 CONF_SECTION *cs, *subcs;
 365
 366                 file = NULL;    /* MUST read it from the conffile now */
 367
 368                 snprintf(buffer, sizeof(buffer), "%s/%s.conf",
 369                          radius_dir, name);
 370
 371                 cs = cf_file_read(buffer);
 372                 if (!cs) {
 373                         fprintf(stderr, "%s: Errors reading %s\n",
 374                                 progname, buffer);
 375                         exit(1);
 376                 }
 377
 378                 subcs = NULL;
 379                 while ((subcs = cf_subsection_find_next(cs, subcs, "listen")) != NULL) {
 380                         const char *value;
 381                         CONF_PAIR *cp = cf_pair_find(subcs, "type");
 382
 383                         if (!cp) continue;
 384
 385                         value = cf_pair_value(cp);
 386                         if (!value) continue;
 387
 388                         if (strcmp(value, "control") != 0) continue;
 389
 390                         /*
 391                          *      Now find the socket name (sigh)
 392                          */
 393                         rcode = cf_item_parse(subcs, "socket",
 394                                               PW_TYPE_STRING_PTR,
 395                                               &file, NULL);
 396                         if (rcode < 0) {
 397                                 fprintf(stderr, "%s: Failed parsing listen section\n", progname);
 398                                 exit(1);
 399                         }
 400
 401                         if (!file) {
 402                                 fprintf(stderr, "%s: No path given for socket\n",
 403                                         progname);
 404                                 exit(1);
 405                         }
 406                         break;
 407                 }
 408
 409                 if (!file) {
 410                         fprintf(stderr, "%s: Could not find control socket in %s\n",
 411                                 progname, buffer);
 412                         exit(1);
 413                 }
 414         }
 415
 416         if (input_file) {
 417                 inputfp = fopen(input_file, "r");
 418                 if (!inputfp) {
 419                         fprintf(stderr, "%s: Failed opening %s: %s\n",
 420                                 progname, input_file, strerror(errno));
 421                         exit(1);
 422                 }
 423         }
 424
 425         if (output_file) {
 426                 outputfp = fopen(output_file, "w");
 427                 if (!outputfp) {
 428                         fprintf(stderr, "%s: Failed creating %s: %s\n",
 429                                 progname, output_file, strerror(errno));
 430                         exit(1);
 431                 }
 432         }
 433
 434         /*
 435          *      Check if stdin is a TTY only if input is from stdin
 436          */
 437         if (input_file && !quiet && !isatty(STDIN_FILENO)) quiet = 1;
 438
 439 #ifdef USE_READLINE
 440         if (!quiet) {
 441 #ifdef USE_READLINE_HISTORY
 442                 using_history();
 443 #endif
 444                 rl_bind_key('\t', rl_insert);
 445         }
 446 #endif
 447
 448  reconnect:
 449         /*
 450          *      FIXME: Get destination from command line, if possible?
 451          */
 452         sockfd = fr_domain_socket(file);
 453         if (sockfd < 0) {
 454                 exit(1);
 455         }
 456
 457         /*
 458          *      Read initial magic && version information.
 459          */
 460         for (size = 0; size < 8; size += len) {
 461                 len = read(sockfd, buffer + size, 8 - size);
 462                 if (len < 0) {
 463                         fprintf(stderr, "%s: Error reading initial data from socket: %s\n",
 464                                 progname, strerror(errno));
 465                         exit(1);
 466                 }
 467         }
 468
 469         memcpy(&magic, buffer, 4);
 470         magic = ntohl(magic);
 471         if (magic != 0xf7eead15) {
 472                 fprintf(stderr, "%s: Socket %s is not FreeRADIUS administration socket\n", progname, file);
 473                 exit(1);
 474         }
 475
 476         memcpy(&magic, buffer + 4, 4);
 477         magic = ntohl(magic);
 478         if (magic != 1) {
 479                 fprintf(stderr, "%s: Socket version mismatch: Need 1, got %d\n",
 480                         progname, magic);
 481                 exit(1);
 482         }
 483
 484         /*
 485          *      Run one command.
 486          */
 487         if (num_commands >= 0) {
 488                 int i;
 489
 490                 for (i = 0; i <= num_commands; i++) {
 491                         size = run_command(sockfd, commands[i],
 492                                            buffer, sizeof(buffer));
 493                         if (size < 0) exit(1);
 494
 495                         if (buffer[0]) {
 496                                 fputs(buffer, outputfp);
 497                                 fprintf(outputfp, "\n");
 498                                 fflush(outputfp);
 499                         }
 500                 }
 501                 exit(0);
 502         }
 503
 504         if (!done_license && !quiet) {
 505                 printf("radmin " RADIUSD_VERSION " - FreeRADIUS Server administration tool.\n");
 506                 printf("Copyright (C) 2008-2011 The FreeRADIUS server project and contributors.\n");
 507                 printf("There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n");
 508                 printf("PARTICULAR PURPOSE.\n");
 509                 printf("You may redistribute copies of FreeRADIUS under the terms of the\n");
 510                 printf("GNU General Public License v2.\n");
 511
 512                 done_license = 1;
 513         }
 514
 515         /*
 516          *      FIXME: Do login?
 517          */
 518
 519         while (1) {
 520 #ifndef USE_READLINE
 521                 if (!quiet) {
 522                         printf("radmin> ");
 523                         fflush(stdout);
 524                 }
 525 #else
 526                 if (!quiet) {
 527                         line = readline("radmin> ");
 528
 529                         if (!line) break;
 530
 531                         if (!*line) {
 532                                 free(line);
 533                                 continue;
 534                         }
 535
 536 #ifdef USE_READLINE_HISTORY
 537                         add_history(line);
 538 #endif
 539                 } else          /* quiet, or no readline */
 540 #endif
 541                 {
 542                         line = fgets(buffer, sizeof(buffer), inputfp);
 543                         if (!line) break;
 544
 545                         p = strchr(buffer, '\n');
 546                         if (!p) {
 547                                 fprintf(stderr, "%s: Input line too long\n",
 548                                         progname);
 549                                 exit(1);
 550                         }
 551
 552                         *p = '\0';
 553
 554                         /*
 555                          *      Strip off leading spaces.
 556                          */
 557                         for (p = line; *p != '\0'; p++) {
 558                                 if ((p[0] == ' ') ||
 559                                     (p[0] == '\t')) {
 560                                         line = p + 1;
 561                                         continue;
 562                                 }
 563
 564                                 if (p[0] == '#') {
 565                                         line = NULL;
 566                                         break;
 567                                 }
 568
 569                                 break;
 570                         }
 571
 572                         /*
 573                          *      Comments: keep going.
 574                          */
 575                         if (!line) continue;
 576
 577                         /*
 578                          *      Strip off CR / LF
 579                          */
 580                         for (p = line; *p != '\0'; p++) {
 581                                 if ((p[0] == '\r') ||
 582                                     (p[0] == '\n')) {
 583                                         p[0] = '\0';
 584                                         break;
 585                                 }
 586                         }
 587                 }
 588
 589                 if (strcmp(line, "reconnect") == 0) {
 590                         close(sockfd);
 591                         line = NULL;
 592                         goto reconnect;
 593                 }
 594
 595                 /*
 596                  *      Exit, done, etc.
 597                  */
 598                 if ((strcmp(line, "exit") == 0) ||
 599                     (strcmp(line, "quit") == 0)) {
 600                         break;
 601                 }
 602
 603                 size = run_command(sockfd, line, buffer, sizeof(buffer));
 604                 if (size <= 0) break; /* error, or clean exit */
 605
 606                 if (size == 1) continue; /* no output. */
 607
 608                 fputs(buffer, outputfp);
 609                 fflush(outputfp);
 610                 fprintf(outputfp, "\n");
 611         }
 612
 613         fprintf(outputfp, "\n");
 614
 615         return 0;
 616 }
 617