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 #ifdef MSG_DONTWAIT
 221                 len = recv(sockfd, buffer + size,
 222                            bufsize - size - 1, MSG_DONTWAIT);
 223 #else
 224                 /*
 225                  *      Read one byte at a time (ugh)
 226                  */
 227                 len = recv(sockfd, buffer + size, 1, 0);
 228 #endif
 229                 if (len < 0) {
 230                         /*
 231                          *      No data: keep looping
 232                          */
 233                         if ((errno == EAGAIN) || (errno == EINTR)) {
 234                                 continue;
 235                         }
 236
 237                         fprintf(stderr, "%s: Error reading socket: %s\n",
 238                                 progname, strerror(errno));
 239                         exit(1);
 240                 }
 241                 if (len == 0) return 0; /* clean exit */
 242
 243                 size += len;
 244                 buffer[size] = '\0';
 245
 246                 /*
 247                  *      There really is a better way of doing this.
 248                  */
 249                 p = strstr(buffer, "radmin> ");
 250                 if (p &&
 251                     ((p == buffer) ||
 252                      (p[-1] == '\n') ||
 253                      (p[-1] == '\r'))) {
 254                         *p = '\0';
 255
 256                         if (p[-1] == '\n') p[-1] = '\0';
 257                         break;
 258                 }
 259         }
 260
 261         /*
 262          *      Blank prompt.  Go get another command.
 263          */
 264         if (!buffer[0]) return 1;
 265
 266         buffer[size] = '\0'; /* this is at least right */
 267
 268         return 2;
 269 }
 270
 271 #define MAX_COMMANDS (4)
 272
 273 int main(int argc, char **argv)
 274 {
 275         int argval, quiet = 0;
 276         int done_license = 0;
 277         int sockfd;
 278         uint32_t magic;
 279         char *line = NULL;
 280         ssize_t len, size;
 281         const char *file = NULL;
 282         const char *name = "radiusd";
 283         char *p, buffer[65536];
 284         const char *input_file = NULL;
 285         FILE *inputfp = stdin;
 286         const char *output_file = NULL;
 287
 288         char *commands[MAX_COMMANDS];
 289         int num_commands = -1;
 290
 291         outputfp = stdout;      /* stdout is not a constant value... */
 292
 293         if ((progname = strrchr(argv[0], FR_DIR_SEP)) == NULL)
 294                 progname = argv[0];
 295         else
 296                 progname++;
 297
 298         while ((argval = getopt(argc, argv, "d:hi:e:Ef:n:o:q")) != EOF) {
 299                 switch(argval) {
 300                 case 'd':
 301                         if (file) {
 302                                 fprintf(stderr, "%s: -d and -f cannot be used together.\n", progname);
 303                                 exit(1);
 304                         }
 305                         radius_dir = optarg;
 306                         break;
 307
 308                 case 'e':
 309                         num_commands++; /* starts at -1 */
 310                         if (num_commands >= MAX_COMMANDS) {
 311                                 fprintf(stderr, "%s: Too many '-e'\n",
 312                                         progname);
 313                                 exit(1);
 314                         }
 315                         commands[num_commands] = optarg;
 316                         break;
 317
 318                 case 'E':
 319                         echo = TRUE;
 320                         break;
 321
 322                 case 'f':
 323                         radius_dir = NULL;
 324                         file = optarg;
 325                         break;
 326
 327                 default:
 328                 case 'h':
 329                         usage();
 330                         break;
 331
 332                 case 'i':
 333                         if (strcmp(optarg, "-") != 0) {
 334                                 input_file = optarg;
 335                         }
 336                         quiet = 1;
 337                         break;
 338
 339                 case 'n':
 340                         name = optarg;
 341                         break;
 342
 343                 case 'o':
 344                         if (strcmp(optarg, "-") != 0) {
 345                                 output_file = optarg;
 346                         }
 347                         quiet = 1;
 348                         break;
 349
 350                 case 'q':
 351                         quiet = 1;
 352                         break;
 353                 }
 354         }
 355
 356         if (radius_dir) {
 357                 int rcode;
 358                 CONF_SECTION *cs, *subcs;
 359
 360                 file = NULL;    /* MUST read it from the conffile now */
 361
 362                 snprintf(buffer, sizeof(buffer), "%s/%s.conf",
 363                          radius_dir, name);
 364
 365                 cs = cf_file_read(buffer);
 366                 if (!cs) {
 367                         fprintf(stderr, "%s: Errors reading %s\n",
 368                                 progname, buffer);
 369                         exit(1);
 370                 }
 371
 372                 subcs = NULL;
 373                 while ((subcs = cf_subsection_find_next(cs, subcs, "listen")) != NULL) {
 374                         const char *value;
 375                         CONF_PAIR *cp = cf_pair_find(subcs, "type");
 376
 377                         if (!cp) continue;
 378
 379                         value = cf_pair_value(cp);
 380                         if (!value) continue;
 381
 382                         if (strcmp(value, "control") != 0) continue;
 383
 384                         /*
 385                          *      Now find the socket name (sigh)
 386                          */
 387                         rcode = cf_item_parse(subcs, "socket",
 388                                               PW_TYPE_STRING_PTR,
 389                                               &file, NULL);
 390                         if (rcode < 0) {
 391                                 fprintf(stderr, "%s: Failed parsing listen section\n", progname);
 392                                 exit(1);
 393                         }
 394
 395                         if (!file) {
 396                                 fprintf(stderr, "%s: No path given for socket\n",
 397                                         progname);
 398                                 exit(1);
 399                         }
 400                         break;
 401                 }
 402
 403                 if (!file) {
 404                         fprintf(stderr, "%s: Could not find control socket in %s\n",
 405                                 progname, buffer);
 406                         exit(1);
 407                 }
 408         }
 409
 410         if (input_file) {
 411                 inputfp = fopen(input_file, "r");
 412                 if (!inputfp) {
 413                         fprintf(stderr, "%s: Failed opening %s: %s\n",
 414                                 progname, input_file, strerror(errno));
 415                         exit(1);
 416                 }
 417         }
 418
 419         if (output_file) {
 420                 outputfp = fopen(output_file, "w");
 421                 if (!outputfp) {
 422                         fprintf(stderr, "%s: Failed creating %s: %s\n",
 423                                 progname, output_file, strerror(errno));
 424                         exit(1);
 425                 }
 426         }
 427
 428         /*
 429          *      Check if stdin is a TTY only if input is from stdin
 430          */
 431         if (input_file && !quiet && !isatty(STDIN_FILENO)) quiet = 1;
 432
 433 #ifdef USE_READLINE
 434         if (!quiet) {
 435 #ifdef USE_READLINE_HISTORY
 436                 using_history();
 437 #endif
 438                 rl_bind_key('\t', rl_insert);
 439         }
 440 #endif
 441
 442  reconnect:
 443         /*
 444          *      FIXME: Get destination from command line, if possible?
 445          */
 446         sockfd = fr_domain_socket(file);
 447         if (sockfd < 0) {
 448                 exit(1);
 449         }
 450
 451         /*
 452          *      Read initial magic && version information.
 453          */
 454         for (size = 0; size < 8; size += len) {
 455                 len = read(sockfd, buffer + size, 8 - size);
 456                 if (len < 0) {
 457                         fprintf(stderr, "%s: Error reading initial data from socket: %s\n",
 458                                 progname, strerror(errno));
 459                         exit(1);
 460                 }
 461         }
 462
 463         memcpy(&magic, buffer, 4);
 464         magic = ntohl(magic);
 465         if (magic != 0xf7eead15) {
 466                 fprintf(stderr, "%s: Socket %s is not FreeRADIUS administration socket\n", progname, file);
 467                 exit(1);
 468         }
 469
 470         memcpy(&magic, buffer + 4, 4);
 471         magic = ntohl(magic);
 472         if (magic != 1) {
 473                 fprintf(stderr, "%s: Socket version mismatch: Need 1, got %d\n",
 474                         progname, magic);
 475                 exit(1);
 476         }
 477
 478         /*
 479          *      Run one command.
 480          */
 481         if (num_commands >= 0) {
 482                 int i;
 483
 484                 for (i = 0; i <= num_commands; i++) {
 485                         size = run_command(sockfd, commands[i],
 486                                            buffer, sizeof(buffer));
 487                         if (size < 0) exit(1);
 488
 489                         if (buffer[0]) {
 490                                 fputs(buffer, outputfp);
 491                                 fprintf(outputfp, "\n");
 492                                 fflush(outputfp);
 493                         }
 494                 }
 495                 exit(0);
 496         }
 497
 498         if (!done_license && !quiet) {
 499                 printf("radmin " RADIUSD_VERSION " - FreeRADIUS Server administration tool.\n");
 500                 printf("Copyright (C) 2008 The FreeRADIUS server project and contributors.\n");
 501                 printf("There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n");
 502                 printf("PARTICULAR PURPOSE.\n");
 503                 printf("You may redistribute copies of FreeRADIUS under the terms of the\n");
 504                 printf("GNU General Public License v2.\n");
 505
 506                 done_license = 1;
 507         }
 508
 509         /*
 510          *      FIXME: Do login?
 511          */
 512
 513         while (1) {
 514 #ifndef USE_READLINE
 515                 if (!quiet) {
 516                         printf("radmin> ");
 517                         fflush(stdout);
 518                 }
 519 #else
 520                 if (!quiet) {
 521                         line = readline("radmin> ");
 522
 523                         if (!line) break;
 524
 525                         if (!*line) {
 526                                 free(line);
 527                                 continue;
 528                         }
 529
 530 #ifdef USE_READLINE_HISTORY
 531                         add_history(line);
 532 #endif
 533                 } else          /* quiet, or no readline */
 534 #endif
 535                 {
 536                         line = fgets(buffer, sizeof(buffer), inputfp);
 537                         if (!line) break;
 538
 539                         p = strchr(buffer, '\n');
 540                         if (!p) {
 541                                 fprintf(stderr, "%s: Input line too long\n",
 542                                         progname);
 543                                 exit(1);
 544                         }
 545
 546                         *p = '\0';
 547
 548                         /*
 549                          *      Strip off leading spaces.
 550                          */
 551                         for (p = line; *p != '\0'; p++) {
 552                                 if ((p[0] == ' ') ||
 553                                     (p[0] == '\t')) {
 554                                         line = p + 1;
 555                                         continue;
 556                                 }
 557
 558                                 if (p[0] == '#') {
 559                                         line = NULL;
 560                                         break;
 561                                 }
 562
 563                                 break;
 564                         }
 565
 566                         /*
 567                          *      Comments: keep going.
 568                          */
 569                         if (!line) continue;
 570
 571                         /*
 572                          *      Strip off CR / LF
 573                          */
 574                         for (p = line; *p != '\0'; p++) {
 575                                 if ((p[0] == '\r') ||
 576                                     (p[0] == '\n')) {
 577                                         p[0] = '\0';
 578                                         break;
 579                                 }
 580                         }
 581                 }
 582
 583                 if (strcmp(line, "reconnect") == 0) {
 584                         close(sockfd);
 585                         line = NULL;
 586                         goto reconnect;
 587                 }
 588
 589                 /*
 590                  *      Exit, done, etc.
 591                  */
 592                 if ((strcmp(line, "exit") == 0) ||
 593                     (strcmp(line, "quit") == 0)) {
 594                         break;
 595                 }
 596
 597                 size = run_command(sockfd, line, buffer, sizeof(buffer));
 598                 if (size <= 0) break; /* error, or clean exit */
 599
 600                 if (size == 1) continue; /* no output. */
 601
 602                 fputs(buffer, outputfp);
 603                 fflush(outputfp);
 604                 fprintf(outputfp, "\n");
 605         }
 606
 607         fprintf(outputfp, "\n");
 608
 609         return 0;
 610 }
 611