src/main/command.c

   1 /*
   2  * command.c    Command socket processing.
   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 #ifdef WITH_COMMAND_SOCKET
  25
  26 #include <freeradius-devel/modpriv.h>
  27 #include <freeradius-devel/conffile.h>
  28 #include <freeradius-devel/stats.h>
  29 #include <freeradius-devel/realms.h>
  30
  31 #ifdef HAVE_SYS_UN_H
  32 #include <sys/un.h>
  33 #ifndef SUN_LEN
  34 #define SUN_LEN(su)  (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
  35 #endif
  36 #endif
  37
  38 #ifdef HAVE_SYS_STAT_H
  39 #include <sys/stat.h>
  40 #endif
  41
  42 #ifdef HAVE_PWD_H
  43 #include <pwd.h>
  44 #endif
  45
  46 #ifdef HAVE_GRP_H
  47 #include <grp.h>
  48 #endif
  49
  50 typedef struct fr_command_table_t fr_command_table_t;
  51
  52 typedef int (*fr_command_func_t)(rad_listen_t *, int, char *argv[]);
  53
  54 #define FR_READ  (1)
  55 #define FR_WRITE (2)
  56
  57 struct fr_command_table_t {
  58         const char *command;
  59         int mode;               /* read/write */
  60         const char *help;
  61         fr_command_func_t func;
  62         fr_command_table_t *table;
  63 };
  64
  65 #define COMMAND_BUFFER_SIZE (1024)
  66
  67 typedef struct fr_command_socket_t {
  68         char    *path;
  69         char    *copy;          /* <sigh> */
  70         uid_t   uid;
  71         gid_t   gid;
  72         int     mode;
  73         char    *uid_name;
  74         char    *gid_name;
  75         char    *mode_name;
  76         char user[256];
  77
  78         /*
  79          *      The next few entries handle fake packets injected by
  80          *      the control socket.
  81          */
  82         fr_ipaddr_t     src_ipaddr; /* src_port is always 0 */
  83         fr_ipaddr_t     dst_ipaddr;
  84         int             dst_port;
  85         rad_listen_t    *inject_listener;
  86         RADCLIENT       *inject_client;
  87
  88         /*
  89          *      The next few entries do buffer management.
  90          */
  91         ssize_t offset;
  92         ssize_t next;
  93         char buffer[COMMAND_BUFFER_SIZE];
  94 } fr_command_socket_t;
  95
  96 static const CONF_PARSER command_config[] = {
  97   { "socket",  PW_TYPE_STRING_PTR,
  98     offsetof(fr_command_socket_t, path), NULL, "${run_dir}/radiusd.sock"},
  99   { "uid",  PW_TYPE_STRING_PTR,
 100     offsetof(fr_command_socket_t, uid_name), NULL, NULL},
 101   { "gid",  PW_TYPE_STRING_PTR,
 102     offsetof(fr_command_socket_t, gid_name), NULL, NULL},
 103   { "mode",  PW_TYPE_STRING_PTR,
 104     offsetof(fr_command_socket_t, mode_name), NULL, NULL},
 105
 106   { NULL, -1, 0, NULL, NULL }           /* end the list */
 107 };
 108
 109 static FR_NAME_NUMBER mode_names[] = {
 110         { "ro", FR_READ },
 111         { "read-only", FR_READ },
 112         { "read-write", FR_READ | FR_WRITE },
 113         { "rw", FR_READ | FR_WRITE },
 114         { NULL, 0 }
 115 };
 116
 117
 118 static ssize_t cprintf(rad_listen_t *listener, const char *fmt, ...)
 119 #ifdef __GNUC__
 120                 __attribute__ ((format (printf, 2, 3)))
 121 #endif
 122 ;
 123
 124 #ifndef HAVE_GETPEEREID
 125 static int getpeereid(int s, uid_t *euid, gid_t *egid)
 126 {
 127 #ifndef SO_PEERCRED
 128         return -1;
 129 #else
 130         struct ucred cr;
 131         socklen_t cl = sizeof(cr);
 132
 133         if (getsockopt(s, SOL_SOCKET, SO_PEERCRED, &cr, &cl) < 0) {
 134                 return -1;
 135         }
 136
 137         *euid = cr.uid;
 138         *egid = cr.gid;
 139         return 0;
 140 #endif /* SO_PEERCRED */
 141 }
 142 #endif /* HAVE_GETPEEREID */
 143
 144
 145 static int fr_server_domain_socket(const char *path)
 146 {
 147         int sockfd;
 148         size_t len;
 149         socklen_t socklen;
 150         struct sockaddr_un salocal;
 151         struct stat buf;
 152
 153         len = strlen(path);
 154         if (len >= sizeof(salocal.sun_path)) {
 155                 radlog(L_ERR, "Path too long in socket filename.");
 156                 return -1;
 157         }
 158
 159         if ((sockfd = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
 160                 radlog(L_ERR, "Failed creating socket: %s",
 161                         strerror(errno));
 162                 return -1;
 163         }
 164
 165         memset(&salocal, 0, sizeof(salocal));
 166         salocal.sun_family = AF_UNIX;
 167         memcpy(salocal.sun_path, path, len + 1); /* SUN_LEN does strlen */
 168
 169         socklen = SUN_LEN(&salocal);
 170
 171         /*
 172          *      Check the path.
 173          */
 174         if (stat(path, &buf) < 0) {
 175                 if (errno != ENOENT) {
 176                         radlog(L_ERR, "Failed to stat %s: %s",
 177                                path, strerror(errno));
 178                         return -1;
 179                 }
 180
 181                 /*
 182                  *      FIXME: Check the enclosing directory?
 183                  */
 184         } else {                /* it exists */
 185                 if (!S_ISREG(buf.st_mode)
 186 #ifdef S_ISSOCK
 187                     && !S_ISSOCK(buf.st_mode)
 188 #endif
 189                         ) {
 190                         radlog(L_ERR, "Cannot turn %s into socket", path);
 191                         return -1;
 192                 }
 193
 194                 /*
 195                  *      Refuse to open sockets not owned by us.
 196                  */
 197                 if (buf.st_uid != geteuid()) {
 198                         radlog(L_ERR, "We do not own %s", path);
 199                         return -1;
 200                 }
 201
 202                 if (unlink(path) < 0) {
 203                         radlog(L_ERR, "Failed to delete %s: %s",
 204                                path, strerror(errno));
 205                         return -1;
 206                 }
 207         }
 208
 209         if (bind(sockfd, (struct sockaddr *)&salocal, socklen) < 0) {
 210                 radlog(L_ERR, "Failed binding to %s: %s",
 211                         path, strerror(errno));
 212                 close(sockfd);
 213                 return -1;
 214         }
 215
 216         /*
 217          *      FIXME: There's a race condition here.  But Linux
 218          *      doesn't seem to permit fchmod on domain sockets.
 219          */
 220         if (chmod(path, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP) < 0) {
 221                 radlog(L_ERR, "Failed setting permissions on %s: %s",
 222                        path, strerror(errno));
 223                 close(sockfd);
 224                 return -1;
 225         }
 226
 227         if (listen(sockfd, 8) < 0) {
 228                 radlog(L_ERR, "Failed listening to %s: %s",
 229                         path, strerror(errno));
 230                 close(sockfd);
 231                 return -1;
 232         }
 233
 234 #ifdef O_NONBLOCK
 235         {
 236                 int flags;
 237
 238                 if ((flags = fcntl(sockfd, F_GETFL, NULL)) < 0)  {
 239                         radlog(L_ERR, "Failure getting socket flags: %s",
 240                                 strerror(errno));
 241                         close(sockfd);
 242                         return -1;
 243                 }
 244
 245                 flags |= O_NONBLOCK;
 246                 if( fcntl(sockfd, F_SETFL, flags) < 0) {
 247                         radlog(L_ERR, "Failure setting socket flags: %s",
 248                                 strerror(errno));
 249                         close(sockfd);
 250                         return -1;
 251                 }
 252         }
 253 #endif
 254
 255         return sockfd;
 256 }
 257
 258
 259 static void command_close_socket(rad_listen_t *this)
 260 {
 261         this->status = RAD_LISTEN_STATUS_CLOSED;
 262
 263         /*
 264          *      This removes the socket from the event fd, so no one
 265          *      will be calling us any more.
 266          */
 267         event_new_fd(this);
 268 }
 269
 270
 271 static ssize_t cprintf(rad_listen_t *listener, const char *fmt, ...)
 272 {
 273         ssize_t len;
 274         va_list ap;
 275         char buffer[256];
 276
 277         va_start(ap, fmt);
 278         len = vsnprintf(buffer, sizeof(buffer), fmt, ap);
 279         va_end(ap);
 280
 281         if (listener->status == RAD_LISTEN_STATUS_CLOSED) return 0;
 282
 283         len = write(listener->fd, buffer, len);
 284         if (len <= 0) command_close_socket(listener);
 285
 286         /*
 287          *      FIXME: Keep writing until done?
 288          */
 289         return len;
 290 }
 291
 292 static int command_hup(rad_listen_t *listener, int argc, char *argv[])
 293 {
 294         CONF_SECTION *cs;
 295         module_instance_t *mi;
 296
 297         if (argc == 0) {
 298                 radius_signal_self(RADIUS_SIGNAL_SELF_HUP);
 299                 return 1;
 300         }
 301
 302         cs = cf_section_find("modules");
 303         if (!cs) return 0;
 304
 305         mi = find_module_instance(cs, argv[0], 0);
 306         if (!mi) {
 307                 cprintf(listener, "ERROR: No such module \"%s\"\n", argv[0]);
 308                 return 0;
 309         }
 310
 311         if ((mi->entry->module->type & RLM_TYPE_HUP_SAFE) == 0) {
 312                 cprintf(listener, "ERROR: Module %s cannot be hup'd\n",
 313                         argv[0]);
 314                 return 0;
 315         }
 316
 317         if (!module_hup_module(mi->cs, mi, time(NULL))) {
 318                 cprintf(listener, "ERROR: Failed to reload module\n");
 319                 return 0;
 320         }
 321
 322         return 1;               /* success */
 323 }
 324
 325 static int command_terminate(UNUSED rad_listen_t *listener,
 326                              UNUSED int argc, UNUSED char *argv[])
 327 {
 328         radius_signal_self(RADIUS_SIGNAL_SELF_TERM);
 329
 330         return 1;               /* success */
 331 }
 332
 333 extern time_t fr_start_time;
 334
 335 static int command_uptime(rad_listen_t *listener,
 336                           UNUSED int argc, UNUSED char *argv[])
 337 {
 338         char buffer[128];
 339
 340         CTIME_R(&fr_start_time, buffer, sizeof(buffer));
 341         cprintf(listener, "Up since %s", buffer); /* no \r\n */
 342
 343         return 1;               /* success */
 344 }
 345
 346 static const char *tabs = "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
 347
 348 /*
 349  *      FIXME: Recurse && indent?
 350  */
 351 static void cprint_conf_parser(rad_listen_t *listener, int indent, CONF_SECTION *cs,
 352                                const void *base)
 353
 354 {
 355         int i;
 356         const void *data;
 357         const char *name1 = cf_section_name1(cs);
 358         const char *name2 = cf_section_name2(cs);
 359         const CONF_PARSER *variables = cf_section_parse_table(cs);
 360         char buffer[256];
 361
 362         if (name2) {
 363                 cprintf(listener, "%.*s%s %s {\n", indent, tabs, name1, name2);
 364         } else {
 365                 cprintf(listener, "%.*s%s {\n", indent, tabs, name1);
 366         }
 367
 368         indent++;
 369
 370         /*
 371          *      Print
 372          */
 373         if (variables) for (i = 0; variables[i].name != NULL; i++) {
 374                 /*
 375                  *      No base struct offset, data must be the pointer.
 376                  *      If data doesn't exist, ignore the entry, there
 377                  *      must be something wrong.
 378                  */
 379                 if (!base) {
 380                         if (!variables[i].data) {
 381                                 continue;
 382                         }
 383
 384                         data = variables[i].data;;
 385
 386                 } else if (variables[i].data) {
 387                         data = variables[i].data;;
 388
 389                 } else {
 390                         data = (((const char *)base) + variables[i].offset);
 391                 }
 392
 393                 switch (variables[i].type) {
 394                 default:
 395                         cprintf(listener, "%.*s%s = ?\n", indent, tabs,
 396                                 variables[i].name);
 397                         break;
 398
 399                 case PW_TYPE_INTEGER:
 400                         cprintf(listener, "%.*s%s = %u\n", indent, tabs,
 401                                 variables[i].name, *(const int *) data);
 402                         break;
 403
 404                 case PW_TYPE_IPADDR:
 405                         inet_ntop(AF_INET, data, buffer, sizeof(buffer));
 406                         break;
 407
 408                 case PW_TYPE_IPV6ADDR:
 409                         inet_ntop(AF_INET6, data, buffer, sizeof(buffer));
 410                         break;
 411
 412                 case PW_TYPE_BOOLEAN:
 413                         cprintf(listener, "%.*s%s = %s\n", indent, tabs,
 414                                 variables[i].name,
 415                                 ((*(const int *) data) == 0) ? "no" : "yes");
 416                         break;
 417
 418                 case PW_TYPE_STRING_PTR:
 419                 case PW_TYPE_FILENAME:
 420                         /*
 421                          *      FIXME: Escape things in the string!
 422                          */
 423                         if (*(const char * const *) data) {
 424                                 cprintf(listener, "%.*s%s = \"%s\"\n", indent, tabs,
 425                                         variables[i].name, *(const char * const *) data);
 426                         } else {
 427                                 cprintf(listener, "%.*s%s = \n", indent, tabs,
 428                                         variables[i].name);
 429                         }
 430
 431                         break;
 432                 }
 433         }
 434
 435         indent--;
 436
 437         cprintf(listener, "%.*s}\n", indent, tabs);
 438 }
 439
 440 static int command_show_module_config(rad_listen_t *listener, int argc, char *argv[])
 441 {
 442         CONF_SECTION *cs;
 443         module_instance_t *mi;
 444
 445         if (argc != 1) {
 446                 cprintf(listener, "ERROR: No module name was given\n");
 447                 return 0;
 448         }
 449
 450         cs = cf_section_find("modules");
 451         if (!cs) return 0;
 452
 453         mi = find_module_instance(cs, argv[0], 0);
 454         if (!mi) {
 455                 cprintf(listener, "ERROR: No such module \"%s\"\n", argv[0]);
 456                 return 0;
 457         }
 458
 459         cprint_conf_parser(listener, 0, mi->cs, mi->insthandle);
 460
 461         return 1;               /* success */
 462 }
 463
 464 static const char *method_names[RLM_COMPONENT_COUNT] = {
 465         "authenticate",
 466         "authorize",
 467         "preacct",
 468         "accounting",
 469         "session",
 470         "pre-proxy",
 471         "post-proxy",
 472         "post-auth"
 473 };
 474
 475
 476 static int command_show_module_methods(rad_listen_t *listener, int argc, char *argv[])
 477 {
 478         int i;
 479         CONF_SECTION *cs;
 480         const module_instance_t *mi;
 481         const module_t *mod;
 482
 483         if (argc != 1) {
 484                 cprintf(listener, "ERROR: No module name was given\n");
 485                 return 0;
 486         }
 487
 488         cs = cf_section_find("modules");
 489         if (!cs) return 0;
 490
 491         mi = find_module_instance(cs, argv[0], 0);
 492         if (!mi) {
 493                 cprintf(listener, "ERROR: No such module \"%s\"\n", argv[0]);
 494                 return 0;
 495         }
 496
 497         mod = mi->entry->module;
 498
 499         for (i = 0; i < RLM_COMPONENT_COUNT; i++) {
 500                 if (mod->methods[i]) cprintf(listener, "\t%s\n", method_names[i]);
 501         }
 502
 503         return 1;               /* success */
 504 }
 505
 506
 507 static int command_show_module_flags(rad_listen_t *listener, int argc, char *argv[])
 508 {
 509         CONF_SECTION *cs;
 510         const module_instance_t *mi;
 511         const module_t *mod;
 512
 513         if (argc != 1) {
 514                 cprintf(listener, "ERROR: No module name was given\n");
 515                 return 0;
 516         }
 517
 518         cs = cf_section_find("modules");
 519         if (!cs) return 0;
 520
 521         mi = find_module_instance(cs, argv[0], 0);
 522         if (!mi) {
 523                 cprintf(listener, "ERROR: No such module \"%s\"\n", argv[0]);
 524                 return 0;
 525         }
 526
 527         mod = mi->entry->module;
 528
 529         if ((mod->type & RLM_TYPE_THREAD_SAFE) != 0)
 530                 cprintf(listener, "\tthread-safe\n");
 531
 532
 533         if ((mod->type & RLM_TYPE_CHECK_CONFIG_SAFE) != 0)
 534                 cprintf(listener, "\twill-check-config\n");
 535
 536
 537         if ((mod->type & RLM_TYPE_HUP_SAFE) != 0)
 538                 cprintf(listener, "\treload-on-hup\n");
 539
 540         return 1;               /* success */
 541 }
 542
 543
 544 /*
 545  *      Show all loaded modules
 546  */
 547 static int command_show_modules(rad_listen_t *listener, UNUSED int argc, UNUSED char *argv[])
 548 {
 549         CONF_SECTION *cs, *subcs;
 550
 551         cs = cf_section_find("modules");
 552         if (!cs) return 0;
 553
 554         subcs = NULL;
 555         while ((subcs = cf_subsection_find_next(cs, subcs, NULL)) != NULL) {
 556                 const char *name1 = cf_section_name1(subcs);
 557                 const char *name2 = cf_section_name2(subcs);
 558
 559                 module_instance_t *mi;
 560
 561                 if (name2) {
 562                         mi = find_module_instance(cs, name2, 0);
 563                         if (!mi) continue;
 564
 565                         cprintf(listener, "\t%s (%s)\n", name2, name1);
 566                 } else {
 567                         mi = find_module_instance(cs, name1, 0);
 568                         if (!mi) continue;
 569
 570                         cprintf(listener, "\t%s\n", name1);
 571                 }
 572         }
 573
 574         return 1;               /* success */
 575 }
 576
 577 #ifdef WITH_PROXY
 578 static int command_show_home_servers(rad_listen_t *listener, UNUSED int argc, UNUSED char *argv[])
 579 {
 580         int i;
 581         home_server *home;
 582         const char *type, *state, *proto;
 583
 584         char buffer[256];
 585
 586         for (i = 0; i < 256; i++) {
 587                 home = home_server_bynumber(i);
 588                 if (!home) break;
 589
 590                 /*
 591                  *      Internal "virtual" home server.
 592                  */
 593                 if (home->ipaddr.af == AF_UNSPEC) continue;
 594
 595                 if (home->type == HOME_TYPE_AUTH) {
 596                         type = "auth";
 597
 598                 } else if (home->type == HOME_TYPE_ACCT) {
 599                         type = "acct";
 600
 601                 } else continue;
 602
 603                 if (home->proto == IPPROTO_UDP) {
 604                         proto = "udp";
 605                 }
 606 #ifdef WITH_TCP
 607                 else if (home->proto == IPPROTO_TCP) {
 608                         proto = "tcp";
 609                 }
 610 #endif
 611                 else proto = "??";
 612
 613                 if (home->state == HOME_STATE_ALIVE) {
 614                         state = "alive";
 615
 616                 } else if (home->state == HOME_STATE_ZOMBIE) {
 617                         state = "zombie";
 618
 619                 } else if (home->state == HOME_STATE_IS_DEAD) {
 620                         state = "dead";
 621
 622                 } else continue;
 623
 624                 cprintf(listener, "%s\t%d\t%s\t%s\t%s\t%d\n",
 625                         ip_ntoh(&home->ipaddr, buffer, sizeof(buffer)),
 626                         home->port, proto, type, state,
 627                         home->currently_outstanding);
 628         }
 629
 630         return 0;
 631 }
 632 #endif
 633
 634 static int command_show_clients(rad_listen_t *listener, UNUSED int argc, UNUSED char *argv[])
 635 {
 636         int i;
 637         RADCLIENT *client;
 638         char buffer[256];
 639
 640         for (i = 0; i < 256; i++) {
 641                 client = client_findbynumber(NULL, i);
 642                 if (!client) break;
 643
 644                 ip_ntoh(&client->ipaddr, buffer, sizeof(buffer));
 645
 646                 if (((client->ipaddr.af == AF_INET) &&
 647                      (client->prefix != 32)) ||
 648                     ((client->ipaddr.af == AF_INET6) &&
 649                      (client->prefix != 128))) {
 650                         cprintf(listener, "\t%s/%d\n", buffer, client->prefix);
 651                 } else {
 652                         cprintf(listener, "\t%s\n", buffer);
 653                 }
 654         }
 655
 656         return 0;
 657 }
 658
 659
 660 static int command_show_xml(rad_listen_t *listener, UNUSED int argc, UNUSED char *argv[])
 661 {
 662         CONF_ITEM *ci;
 663         FILE *fp = fdopen(dup(listener->fd), "a");
 664
 665         if (!fp) {
 666                 cprintf(listener, "ERROR: Can't dup %s\n", strerror(errno));
 667                 return 0;
 668         }
 669
 670         if (argc == 0) {
 671                 cprintf(listener, "ERROR: <reference> is required\n");
 672                 return 0;
 673         }
 674
 675         ci = cf_reference_item(mainconfig.config, mainconfig.config, argv[0]);
 676         if (!ci) {
 677                 cprintf(listener, "ERROR: No such item <reference>\n");
 678                 return 0;
 679         }
 680
 681         if (cf_item_is_section(ci)) {
 682                 cf_section2xml(fp, cf_itemtosection(ci));
 683
 684         } else if (cf_item_is_pair(ci)) {
 685                 cf_pair2xml(fp, cf_itemtopair(ci));
 686
 687         } else {
 688                 cprintf(listener, "ERROR: No such item <reference>\n");
 689                 fclose(fp);
 690                 return 0;
 691         }
 692
 693         fclose(fp);
 694
 695         return 1;               /* success */
 696 }
 697
 698 static int command_show_version(rad_listen_t *listener, UNUSED int argc, UNUSED char *argv[])
 699 {
 700         cprintf(listener, "%s\n", radiusd_version);
 701         return 1;
 702 }
 703
 704 static int command_debug_level(rad_listen_t *listener, int argc, char *argv[])
 705 {
 706         int number;
 707
 708         if (argc == 0) {
 709                 cprintf(listener, "ERROR: Must specify <number>\n");
 710                 return -1;
 711         }
 712
 713         number = atoi(argv[0]);
 714         if ((number < 0) || (number > 4)) {
 715                 cprintf(listener, "ERROR: <number> must be between 0 and 4\n");
 716                 return -1;
 717         }
 718
 719         fr_debug_flag = debug_flag = number;
 720
 721         return 0;
 722 }
 723
 724 char *debug_log_file = NULL;
 725 static char debug_log_file_buffer[1024];
 726
 727 static int command_debug_file(rad_listen_t *listener, int argc, char *argv[])
 728 {
 729         if (debug_flag && mainconfig.radlog_dest == RADLOG_STDOUT) {
 730                 cprintf(listener, "ERROR: Cannot redirect debug logs to a file when already in debugging mode.\n");
 731                 return -1;
 732         }
 733
 734         if ((argc > 0) && (strchr(argv[0], FR_DIR_SEP) != NULL)) {
 735                 cprintf(listener, "ERROR: Cannot direct debug logs to absolute path.\n");
 736         }
 737
 738         debug_log_file = NULL;
 739
 740         if (argc == 0) return 0;
 741
 742         /*
 743          *      This looks weird, but it's here to avoid locking
 744          *      a mutex for every log message.
 745          */
 746         memset(debug_log_file_buffer, 0, sizeof(debug_log_file_buffer));
 747
 748         /*
 749          *      Debug files always go to the logging directory.
 750          */
 751         snprintf(debug_log_file_buffer, sizeof(debug_log_file_buffer),
 752                  "%s/%s", radlog_dir, argv[0]);
 753
 754         debug_log_file = &debug_log_file_buffer[0];
 755
 756         return 0;
 757 }
 758
 759 extern char *debug_condition;
 760 static int command_debug_condition(UNUSED rad_listen_t *listener, int argc, char *argv[])
 761 {
 762         /*
 763          *      Delete old condition.
 764          *
 765          *      This is thread-safe because the condition is evaluated
 766          *      in the main server thread, as is this code.
 767          */
 768         free(debug_condition);
 769         debug_condition = NULL;
 770
 771         /*
 772          *      Disable it.
 773          */
 774         if (argc == 0) {
 775                 return 0;
 776         }
 777
 778         debug_condition = strdup(argv[0]);
 779
 780         return 0;
 781 }
 782
 783 static int command_show_debug_condition(rad_listen_t *listener,
 784                                         UNUSED int argc, UNUSED char *argv[])
 785 {
 786         if (!debug_condition) return 0;
 787
 788         cprintf(listener, "%s\n", debug_condition);
 789         return 0;
 790 }
 791
 792
 793 static int command_show_debug_file(rad_listen_t *listener,
 794                                         UNUSED int argc, UNUSED char *argv[])
 795 {
 796         if (!debug_log_file) return 0;
 797
 798         cprintf(listener, "%s\n", debug_log_file);
 799         return 0;
 800 }
 801
 802
 803 static int command_show_debug_level(rad_listen_t *listener,
 804                                         UNUSED int argc, UNUSED char *argv[])
 805 {
 806         cprintf(listener, "%d\n", debug_flag);
 807         return 0;
 808 }
 809
 810
 811 static RADCLIENT *get_client(rad_listen_t *listener, int argc, char *argv[])
 812 {
 813         RADCLIENT *client;
 814         fr_ipaddr_t ipaddr;
 815         int proto = IPPROTO_UDP;
 816
 817         if (argc < 1) {
 818                 cprintf(listener, "ERROR: Must specify <ipaddr>\n");
 819                 return NULL;
 820         }
 821
 822         if (ip_hton(argv[0], AF_UNSPEC, &ipaddr) < 0) {
 823                 cprintf(listener, "ERROR: Failed parsing IP address; %s\n",
 824                         fr_strerror());
 825                 return NULL;
 826         }
 827
 828 #ifdef WITH_TCP
 829         if (argc >= 2) {
 830                 if (strcmp(argv[1], "tcp") == 0) {
 831                         proto = IPPROTO_TCP;
 832
 833                 } else if (strcmp(argv[1], "udp") == 0) {
 834                         proto = IPPROTO_UDP;
 835
 836                 } else {
 837                         cprintf(listener, "ERROR: Unknown protocol %s.  Please use \"udp\" or \"tcp\"\n",
 838                                 argv[1]);
 839                         return NULL;
 840                 }
 841         }
 842 #endif
 843
 844         client = client_find(NULL, &ipaddr, proto);
 845         if (!client) {
 846                 cprintf(listener, "ERROR: No such client\n");
 847                 return NULL;
 848         }
 849
 850         return client;
 851 }
 852
 853
 854 static int command_show_client_config(rad_listen_t *listener, int argc, char *argv[])
 855 {
 856         RADCLIENT *client;
 857         FILE *fp;
 858
 859         client = get_client(listener, argc, argv);
 860         if (!client) {
 861                 return 0;
 862         }
 863
 864         if (!client->cs) return 1;
 865
 866         fp = fdopen(dup(listener->fd), "a");
 867         if (!fp) {
 868                 cprintf(listener, "ERROR: Can't dup %s\n", strerror(errno));
 869                 return 0;
 870         }
 871
 872         cf_section2file(fp, client->cs);
 873         fclose(fp);
 874
 875         return 1;
 876 }
 877
 878 #ifdef WITH_PROXY
 879 static home_server *get_home_server(rad_listen_t *listener, int argc,
 880                                     char *argv[], int *last)
 881 {
 882         home_server *home;
 883         int port;
 884         int proto = IPPROTO_UDP;
 885         fr_ipaddr_t ipaddr;
 886
 887         if (argc < 2) {
 888                 cprintf(listener, "ERROR: Must specify <ipaddr> <port> [proto]\n");
 889                 return NULL;
 890         }
 891
 892         if (ip_hton(argv[0], AF_UNSPEC, &ipaddr) < 0) {
 893                 cprintf(listener, "ERROR: Failed parsing IP address; %s\n",
 894                         fr_strerror());
 895                 return NULL;
 896         }
 897
 898         port = atoi(argv[1]);
 899
 900         if (last) *last = 2;
 901         if (argc > 2) {
 902                 if (strcmp(argv[2], "udp") == 0) {
 903                         proto = IPPROTO_UDP;
 904                         if (last) *last = 3;
 905                 }
 906 #ifdef WITH_TCP
 907                 if (strcmp(argv[2], "tcp") == 0) {
 908                         proto = IPPROTO_TCP;
 909                         if (last) *last = 3;
 910                 }
 911 #endif
 912         }
 913
 914         home = home_server_find(&ipaddr, port, proto);
 915         if (!home) {
 916                 cprintf(listener, "ERROR: No such home server\n");
 917                 return NULL;
 918         }
 919
 920         return home;
 921 }
 922
 923 static int command_show_home_server_config(rad_listen_t *listener, int argc, char *argv[])
 924 {
 925         home_server *home;
 926         FILE *fp;
 927
 928         home = get_home_server(listener, argc, argv, NULL);
 929         if (!home) {
 930                 return 0;
 931         }
 932
 933         if (!home->cs) return 1;
 934
 935         fp = fdopen(dup(listener->fd), "a");
 936         if (!fp) {
 937                 cprintf(listener, "ERROR: Can't dup %s\n", strerror(errno));
 938                 return 0;
 939         }
 940
 941         cf_section2file(fp, home->cs);
 942         fclose(fp);
 943
 944         return 1;
 945 }
 946
 947 extern void revive_home_server(void *ctx);
 948 extern void mark_home_server_dead(home_server *home, struct timeval *when);
 949
 950 static int command_set_home_server_state(rad_listen_t *listener, int argc, char *argv[])
 951 {
 952         int last;
 953         home_server *home;
 954
 955         if (argc < 3) {
 956                 cprintf(listener, "ERROR: Must specify <ipaddr> <port> [proto] <state>\n");
 957                 return 0;
 958         }
 959
 960         home = get_home_server(listener, argc, argv, &last);
 961         if (!home) {
 962                 return 0;
 963         }
 964
 965         if (strcmp(argv[last], "alive") == 0) {
 966                 revive_home_server(home);
 967
 968         } else if (strcmp(argv[last], "dead") == 0) {
 969                 struct timeval now;
 970
 971                 gettimeofday(&now, NULL); /* we do this WAY too ofetn */
 972                 mark_home_server_dead(home, &now);
 973
 974         } else {
 975                 cprintf(listener, "ERROR: Unknown state \"%s\"\n", argv[last]);
 976                 return 0;
 977         }
 978
 979         return 1;
 980 }
 981
 982 static int command_show_home_server_state(rad_listen_t *listener, int argc, char *argv[])
 983 {
 984         home_server *home;
 985
 986         home = get_home_server(listener, argc, argv, NULL);
 987         if (!home) {
 988                 return 0;
 989         }
 990
 991         switch (home->state) {
 992         case HOME_STATE_ALIVE:
 993                 cprintf(listener, "alive\n");
 994                 break;
 995
 996         case HOME_STATE_IS_DEAD:
 997                 cprintf(listener, "dead\n");
 998                 break;
 999
1000         case HOME_STATE_ZOMBIE:
1001                 cprintf(listener, "zombie\n");
1002                 break;
1003
1004         default:
1005                 cprintf(listener, "unknown\n");
1006                 break;
1007         }
1008
1009         return 1;
1010 }
1011 #endif
1012
1013 /*
1014  *      For encode/decode stuff
1015  */
1016 static int null_socket_dencode(UNUSED rad_listen_t *listener, UNUSED REQUEST *request)
1017 {
1018         return 0;
1019 }
1020
1021 static int null_socket_send(UNUSED rad_listen_t *listener, REQUEST *request)
1022 {
1023         char *output_file;
1024         FILE *fp;
1025         VALUE_PAIR *vp;
1026
1027         output_file = request_data_reference(request, null_socket_send, 0);
1028         if (!output_file) {
1029                 radlog(L_ERR, "WARNING: No output file for injected packet %d",
1030                        request->number);
1031                 return 0;
1032         }
1033
1034         fp = fopen(output_file, "w");
1035         if (!fp) {
1036                 radlog(L_ERR, "Failed to send injected file to %s: %s",
1037                        output_file, strerror(errno));
1038                 return 0;
1039         }
1040
1041         if (request->reply->code != 0) {
1042                 const char *what = "reply";
1043                 char buffer[1024];
1044
1045                 if (request->reply->code < FR_MAX_PACKET_CODE) {
1046                         what = fr_packet_codes[request->reply->code];
1047                 }
1048
1049                 fprintf(fp, "%s\n", what);
1050
1051                 if (debug_flag) {
1052                         request->radlog(L_DBG, 0, request,
1053                                         "Injected %s packet to host %s port 0 code=%d, id=%d",
1054                                         what,
1055                                         inet_ntop(request->reply->src_ipaddr.af,
1056                                                   &request->reply->src_ipaddr.ipaddr,
1057                                                   buffer, sizeof(buffer)),
1058                                         request->reply->code, request->reply->id);
1059                 }
1060
1061                 for (vp = request->reply->vps; vp != NULL; vp = vp->next) {
1062                         vp_prints(buffer, sizeof(buffer), vp);
1063                         fprintf(fp, "%s\n", buffer);
1064                         if (debug_flag) {
1065                                 request->radlog(L_DBG, 0, request, "\t%s",
1066                                                 buffer);
1067                         }
1068                 }
1069         }
1070         fclose(fp);
1071
1072         return 0;
1073 }
1074
1075 static int command_inject_to(rad_listen_t *listener, int argc, char *argv[])
1076 {
1077         int port;
1078         RAD_LISTEN_TYPE type;
1079         fr_command_socket_t *sock = listener->data;
1080         fr_ipaddr_t ipaddr;
1081         rad_listen_t *found = NULL;
1082
1083         if (argc < 1) {
1084                 cprintf(listener, "ERROR: Must specify [auth/acct]\n");
1085                 return 0;
1086         }
1087
1088         if (strcmp(argv[0], "auth") == 0) {
1089                 type = RAD_LISTEN_AUTH;
1090
1091         } else if (strcmp(argv[0], "acct") == 0) {
1092 #ifdef WITH_ACCOUNTING
1093                 type = RAD_LISTEN_ACCT;
1094 #else
1095                 cprintf(listener, "ERROR: This server was built without accounting support.\n");
1096                 return 0;
1097 #endif
1098
1099         } else {
1100                 cprintf(listener, "ERROR: Unknown socket type\n");
1101                 return 0;
1102         }
1103
1104         if (argc < 3) {
1105                 cprintf(listener, "ERROR: No <ipaddr> <port> was given\n");
1106                 return 0;
1107         }
1108
1109         /*
1110          *      FIXME:  Look for optional arg 4, and bind interface.
1111          */
1112
1113         if (ip_hton(argv[1], AF_UNSPEC, &ipaddr) < 0) {
1114                 cprintf(listener, "ERROR: Failed parsing IP address; %s\n",
1115                         fr_strerror());
1116                 return 0;
1117         }
1118         port = atoi(argv[2]);
1119
1120         found = listener_find_byipaddr(&ipaddr, port);
1121         if (!found) {
1122                 cprintf(listener, "ERROR: Could not find matching listener\n");
1123                 return 0;
1124         }
1125
1126         sock->inject_listener = found;
1127         sock->dst_ipaddr = ipaddr;
1128         sock->dst_port = port;
1129
1130         return 1;
1131 }
1132
1133 static int command_inject_from(rad_listen_t *listener, int argc, char *argv[])
1134 {
1135         RADCLIENT *client;
1136         fr_command_socket_t *sock = listener->data;
1137
1138         if (argc < 1) {
1139                 cprintf(listener, "ERROR: No <ipaddr> was given\n");
1140                 return 0;
1141         }
1142
1143         if (!sock->inject_listener) {
1144                 cprintf(listener, "ERROR: You must specify \"inject to\" before using \"inject from\"\n");
1145                 return 0;
1146         }
1147
1148         sock->src_ipaddr.af = AF_UNSPEC;
1149         if (ip_hton(argv[0], AF_UNSPEC, &sock->src_ipaddr) < 0) {
1150                 cprintf(listener, "ERROR: Failed parsing IP address; %s\n",
1151                         fr_strerror());
1152                 return 0;
1153         }
1154
1155         client = client_listener_find(sock->inject_listener, &sock->src_ipaddr,
1156                                       0);
1157         if (!client) {
1158                 cprintf(listener, "ERROR: No such client %s\n", argv[0]);
1159                 return 0;
1160         }
1161         sock->inject_client = client;
1162
1163         return 1;
1164 }
1165
1166 static int command_inject_file(rad_listen_t *listener, int argc, char *argv[])
1167 {
1168         static int inject_id = 0;
1169         int filedone;
1170         fr_command_socket_t *sock = listener->data;
1171         rad_listen_t *fake;
1172         REQUEST *request = NULL;
1173         RADIUS_PACKET *packet;
1174         VALUE_PAIR *vp;
1175         FILE *fp;
1176         RAD_REQUEST_FUNP fun = NULL;
1177         char buffer[2048];
1178
1179         if (argc < 2) {
1180                 cprintf(listener, "ERROR: You must specify <input-file> <output-file>\n");
1181                 return 0;
1182         }
1183
1184         /*
1185          *      Output files always go to the logging directory.
1186          */
1187         snprintf(buffer, sizeof(buffer), "%s/%s", radlog_dir, argv[1]);
1188
1189         fp = fopen(argv[0], "r");
1190         if (!fp ) {
1191                 cprintf(listener, "ERROR: Failed opening %s: %s\n",
1192                         argv[0], strerror(errno));
1193                 return 0;
1194         }
1195
1196         vp = readvp2(fp, &filedone, "");
1197         fclose(fp);
1198         if (!vp) {
1199                 cprintf(listener, "ERROR: Failed reading attributes from %s: %s\n",
1200                         argv[0], fr_strerror());
1201                 return 0;
1202         }
1203
1204         fake = rad_malloc(sizeof(*fake));
1205         memcpy(fake, sock->inject_listener, sizeof(*fake));
1206
1207         /*
1208          *      Re-write the IO for the listener.
1209          */
1210         fake->encode = null_socket_dencode;
1211         fake->decode = null_socket_dencode;
1212         fake->send = null_socket_send;
1213
1214         packet = rad_alloc(0);
1215         packet->src_ipaddr = sock->src_ipaddr;
1216         packet->src_port = 0;
1217
1218         packet->dst_ipaddr = sock->dst_ipaddr;
1219         packet->dst_port = sock->dst_port;
1220         packet->vps = vp;
1221         packet->id = inject_id++;
1222
1223         if (fake->type == RAD_LISTEN_AUTH) {
1224                 packet->code = PW_AUTHENTICATION_REQUEST;
1225                 fun = rad_authenticate;
1226
1227         } else {
1228 #ifdef WITH_ACCOUNTING
1229                 packet->code = PW_ACCOUNTING_REQUEST;
1230                 fun = rad_accounting;
1231 #else
1232                 cprintf(listener, "ERROR: This server was built without accounting support.\n");
1233                 rad_free(&packet);
1234                 free(fake);
1235                 return 0;
1236 #endif
1237         }
1238
1239         if (!received_request(fake, packet, &request, sock->inject_client)) {
1240                 cprintf(listener, "ERROR: Failed to inject request.  See log file for details\n");
1241                 rad_free(&packet);
1242                 free(fake);
1243                 return 0;
1244         }
1245
1246         /*
1247          *      Remember what the output file is, and remember to
1248          *      delete the fake listener when done.
1249          */
1250         request_data_add(request, null_socket_send, 0, strdup(buffer), free);
1251         request_data_add(request, null_socket_send, 1, fake, free);
1252
1253         if (debug_flag) {
1254                 request->radlog(L_DBG, 0, request,
1255                                 "Injected %s packet from host %s port 0 code=%d, id=%d",
1256                                 fr_packet_codes[packet->code],
1257                                 inet_ntop(packet->src_ipaddr.af,
1258                                           &packet->src_ipaddr.ipaddr,
1259                                           buffer, sizeof(buffer)),
1260                                 packet->code, packet->id);
1261
1262                 for (vp = packet->vps; vp != NULL; vp = vp->next) {
1263                         vp_prints(buffer, sizeof(buffer), vp);
1264                         request->radlog(L_DBG, 0, request, "\t%s", buffer);
1265                 }
1266         }
1267
1268         /*
1269          *      And go process it.
1270          */
1271         thread_pool_addrequest(request, fun);
1272
1273         return 1;
1274 }
1275
1276
1277 static fr_command_table_t command_table_inject[] = {
1278         { "to", FR_WRITE,
1279           "inject to <ipaddr> <port> - Inject packets to the destination IP and port.",
1280           command_inject_to, NULL },
1281
1282         { "from", FR_WRITE,
1283           "inject from <ipaddr> - Inject packets as if they came from <ipaddr>",
1284           command_inject_from, NULL },
1285
1286         { "file", FR_WRITE,
1287           "inject file <input-file> <output-file> - Inject packet from input-file>, with results sent to <output-file>",
1288           command_inject_file, NULL },
1289
1290         { NULL, 0, NULL, NULL, NULL }
1291 };
1292
1293 static fr_command_table_t command_table_debug[] = {
1294         { "condition", FR_WRITE,
1295           "debug condition [condition] - Enable debugging for requests matching [condition]",
1296           command_debug_condition, NULL },
1297
1298         { "level", FR_WRITE,
1299           "debug level <number> - Set debug level to <number>.  Higher is more debugging.",
1300           command_debug_level, NULL },
1301
1302         { "file", FR_WRITE,
1303           "debug file [filename] - Send all debugging output to [filename]",
1304           command_debug_file, NULL },
1305
1306         { NULL, 0, NULL, NULL, NULL }
1307 };
1308
1309 static fr_command_table_t command_table_show_debug[] = {
1310         { "condition", FR_READ,
1311           "show debug condition - Shows current debugging condition.",
1312           command_show_debug_condition, NULL },
1313
1314         { "level", FR_READ,
1315           "show debug level - Shows current debugging level.",
1316           command_show_debug_level, NULL },
1317
1318         { "file", FR_READ,
1319           "show debug file - Shows current debugging file.",
1320           command_show_debug_file, NULL },
1321
1322         { NULL, 0, NULL, NULL, NULL }
1323 };
1324
1325 static fr_command_table_t command_table_show_module[] = {
1326         { "config", FR_READ,
1327           "show module config <module> - show configuration for given module",
1328           command_show_module_config, NULL },
1329         { "flags", FR_READ,
1330           "show module flags <module> - show other module properties",
1331           command_show_module_flags, NULL },
1332         { "list", FR_READ,
1333           "show module list - shows list of loaded modules",
1334           command_show_modules, NULL },
1335         { "methods", FR_READ,
1336           "show module methods <module> - show sections where <module> may be used",
1337           command_show_module_methods, NULL },
1338
1339         { NULL, 0, NULL, NULL, NULL }
1340 };
1341
1342 static fr_command_table_t command_table_show_client[] = {
1343         { "config", FR_READ,
1344           "show client config <ipaddr> "
1345 #ifdef WITH_TCP
1346           "[proto] "
1347 #endif
1348           "- show configuration for given client",
1349           command_show_client_config, NULL },
1350         { "list", FR_READ,
1351           "show client list - shows list of global clients",
1352           command_show_clients, NULL },
1353
1354         { NULL, 0, NULL, NULL, NULL }
1355 };
1356
1357 #ifdef WITH_PROXY
1358 static fr_command_table_t command_table_show_home[] = {
1359         { "config", FR_READ,
1360           "show home_server config <ipaddr> <port> [proto] - show configuration for given home server",
1361           command_show_home_server_config, NULL },
1362         { "list", FR_READ,
1363           "show home_server list - shows list of home servers",
1364           command_show_home_servers, NULL },
1365         { "state", FR_READ,
1366           "show home_server state <ipaddr> <port> [proto] - shows state of given home server",
1367           command_show_home_server_state, NULL },
1368
1369         { NULL, 0, NULL, NULL, NULL }
1370 };
1371 #endif
1372
1373
1374 static fr_command_table_t command_table_show[] = {
1375         { "client", FR_READ,
1376           "show client <command> - do sub-command of client",
1377           NULL, command_table_show_client },
1378         { "debug", FR_READ,
1379           "show debug <command> - show debug properties",
1380           NULL, command_table_show_debug },
1381 #ifdef WITH_PROXY
1382         { "home_server", FR_READ,
1383           "show home_server <command> - do sub-command of home_server",
1384           NULL, command_table_show_home },
1385 #endif
1386         { "module", FR_READ,
1387           "show module <command> - do sub-command of module",
1388           NULL, command_table_show_module },
1389         { "uptime", FR_READ,
1390           "show uptime - shows time at which server started",
1391           command_uptime, NULL },
1392         { "version", FR_READ,
1393           "show version - Prints version of the running server",
1394           command_show_version, NULL },
1395         { "xml", FR_READ,
1396           "show xml <reference> - Prints out configuration as XML",
1397           command_show_xml, NULL },
1398         { NULL, 0, NULL, NULL, NULL }
1399 };
1400
1401
1402 static int command_set_module_config(rad_listen_t *listener, int argc, char *argv[])
1403 {
1404         int i, rcode;
1405         CONF_PAIR *cp;
1406         CONF_SECTION *cs;
1407         module_instance_t *mi;
1408         const CONF_PARSER *variables;
1409         void *data;
1410
1411         if (argc < 3) {
1412                 cprintf(listener, "ERROR: No module name or variable was given\n");
1413                 return 0;
1414         }
1415
1416         cs = cf_section_find("modules");
1417         if (!cs) return 0;
1418
1419         mi = find_module_instance(cs, argv[0], 0);
1420         if (!mi) {
1421                 cprintf(listener, "ERROR: No such module \"%s\"\n", argv[0]);
1422                 return 0;
1423         }
1424
1425         if ((mi->entry->module->type & RLM_TYPE_HUP_SAFE) == 0) {
1426                 cprintf(listener, "ERROR: Cannot change configuration of module as it is cannot be HUP'd.\n");
1427                 return 0;
1428         }
1429
1430         variables = cf_section_parse_table(mi->cs);
1431         if (!variables) {
1432                 cprintf(listener, "ERROR: Cannot find configuration for module\n");
1433                 return 0;
1434         }
1435
1436         rcode = -1;
1437         for (i = 0; variables[i].name != NULL; i++) {
1438                 /*
1439                  *      FIXME: Recurse into sub-types somehow...
1440                  */
1441                 if (variables[i].type == PW_TYPE_SUBSECTION) continue;
1442
1443                 if (strcmp(variables[i].name, argv[1]) == 0) {
1444                         rcode = i;
1445                         break;
1446                 }
1447         }
1448
1449         if (rcode < 0) {
1450                 cprintf(listener, "ERROR: No such variable \"%s\"\n", argv[1]);
1451                 return 0;
1452         }
1453
1454         i = rcode;              /* just to be safe */
1455
1456         /*
1457          *      It's not part of the dynamic configuration.  The module
1458          *      needs to re-parse && validate things.
1459          */
1460         if (variables[i].data) {
1461                 cprintf(listener, "ERROR: Variable cannot be dynamically updated\n");
1462                 return 0;
1463         }
1464
1465         data = ((char *) mi->insthandle) + variables[i].offset;
1466
1467         cp = cf_pair_find(mi->cs, argv[1]);
1468         if (!cp) return 0;
1469
1470         /*
1471          *      Replace the OLD value in the configuration file with
1472          *      the NEW value.
1473          *
1474          *      FIXME: Parse argv[2] depending on it's data type!
1475          *      If it's a string, look for leading single/double quotes,
1476          *      end then call tokenize functions???
1477          */
1478         cf_pair_replace(mi->cs, cp, argv[2]);
1479
1480         rcode = cf_item_parse(mi->cs, argv[1], variables[i].type,
1481                               data, argv[2]);
1482         if (rcode < 0) {
1483                 cprintf(listener, "ERROR: Failed to parse value\n");
1484                 return 0;
1485         }
1486
1487         return 1;               /* success */
1488 }
1489
1490 static int command_set_module_status(rad_listen_t *listener, int argc, char *argv[])
1491 {
1492         CONF_SECTION *cs;
1493         module_instance_t *mi;
1494
1495         if (argc < 2) {
1496                 cprintf(listener, "ERROR: No module name or status was given\n");
1497                 return 0;
1498         }
1499
1500         cs = cf_section_find("modules");
1501         if (!cs) return 0;
1502
1503         mi = find_module_instance(cs, argv[0], 0);
1504         if (!mi) {
1505                 cprintf(listener, "ERROR: No such module \"%s\"\n", argv[0]);
1506                 return 0;
1507         }
1508
1509
1510         if (strcmp(argv[1], "alive") == 0) {
1511                 mi->dead = FALSE;
1512
1513         } else if (strcmp(argv[1], "dead") == 0) {
1514                 mi->dead = TRUE;
1515
1516         } else {
1517                 cprintf(listener, "ERROR: Unknown status \"%s\"\n", argv[2]);
1518                 return 0;
1519         }
1520
1521         return 1;               /* success */
1522 }
1523
1524 static int command_print_stats(rad_listen_t *listener, fr_stats_t *stats,
1525                                int auth)
1526 {
1527         cprintf(listener, "\trequests\t%u\n", stats->total_requests);
1528         cprintf(listener, "\tresponses\t%u\n", stats->total_responses);
1529
1530         if (auth) {
1531                 cprintf(listener, "\taccepts\t\t%u\n",
1532                         stats->total_access_accepts);
1533                 cprintf(listener, "\trejects\t\t%u\n",
1534                         stats->total_access_rejects);
1535                 cprintf(listener, "\tchallenges\t%u\n",
1536                         stats->total_access_challenges);
1537         }
1538
1539         cprintf(listener, "\tdup\t\t%u\n", stats->total_dup_requests);
1540         cprintf(listener, "\tinvalid\t\t%u\n", stats->total_invalid_requests);
1541         cprintf(listener, "\tmalformed\t%u\n", stats->total_malformed_requests);
1542         cprintf(listener, "\tbad_signature\t%u\n", stats->total_bad_authenticators);
1543         cprintf(listener, "\tdropped\t\t%u\n", stats->total_packets_dropped);
1544         cprintf(listener, "\tunknown_types\t%u\n", stats->total_unknown_types);
1545
1546         return 1;
1547 }
1548
1549
1550 #ifdef WITH_DETAIL
1551 static FR_NAME_NUMBER state_names[] = {
1552         { "unopened", STATE_UNOPENED },
1553         { "unlocked", STATE_UNLOCKED },
1554         { "header", STATE_HEADER },
1555         { "reading", STATE_READING },
1556         { "queued", STATE_QUEUED },
1557         { "running", STATE_RUNNING },
1558         { "no-reply", STATE_NO_REPLY },
1559         { "replied", STATE_REPLIED },
1560
1561         { NULL, 0 }
1562 };
1563
1564 static int command_stats_detail(rad_listen_t *listener, int argc, char *argv[])
1565 {
1566         rad_listen_t *this;
1567         listen_detail_t *data;
1568         struct stat buf;
1569
1570         if (argc == 0) {
1571                 cprintf(listener, "ERROR: Must specify <filename>\n");
1572                 return 0;
1573         }
1574
1575         data = NULL;
1576         for (this = mainconfig.listen; this != NULL; this = this->next) {
1577                 if (this->type != RAD_LISTEN_DETAIL) continue;
1578
1579                 data = this->data;
1580                 if (strcmp(argv[1], data->filename) != 0) continue;
1581
1582                 break;
1583         }
1584
1585         cprintf(listener, "\tstate\t%s\n",
1586                 fr_int2str(state_names, data->state, "?"));
1587
1588         if ((data->state == STATE_UNOPENED) ||
1589             (data->state == STATE_UNLOCKED)) {
1590                 return 1;
1591         }
1592
1593         /*
1594          *      Race conditions: file might not exist.
1595          */
1596         if (stat(data->filename_work, &buf) < 0) {
1597                 cprintf(listener, "packets\t0\n");
1598                 cprintf(listener, "tries\t0\n");
1599                 cprintf(listener, "offset\t0\n");
1600                 cprintf(listener, "size\t0\n");
1601                 return 1;
1602         }
1603
1604         cprintf(listener, "packets\t%d\n", data->packets);
1605         cprintf(listener, "tries\t%d\n", data->tries);
1606         cprintf(listener, "offset\t%u\n", (unsigned int) data->offset);
1607         cprintf(listener, "size\t%u\n", (unsigned int) buf.st_size);
1608
1609         return 1;
1610 }
1611 #endif
1612
1613 #ifdef WITH_PROXY
1614 static int command_stats_home_server(rad_listen_t *listener, int argc, char *argv[])
1615 {
1616         home_server *home;
1617
1618         if (argc == 0) {
1619                 cprintf(listener, "ERROR: Must specify [auth/acct] OR <ipaddr> <port>\n");
1620                 return 0;
1621         }
1622
1623         if (argc == 1) {
1624 #ifdef WITH_ACCOUNTING
1625                 if (strcmp(argv[0], "acct") == 0) {
1626                         return command_print_stats(listener,
1627                                                    &proxy_acct_stats, 0);
1628                 }
1629 #endif
1630                 if (strcmp(argv[0], "auth") == 0) {
1631                         return command_print_stats(listener,
1632                                                    &proxy_auth_stats, 1);
1633                 }
1634
1635                 cprintf(listener, "ERROR: Should specify [auth/acct]\n");
1636                 return 0;
1637         }
1638
1639         home = get_home_server(listener, argc, argv, NULL);
1640         if (!home) {
1641                 return 0;
1642         }
1643
1644         command_print_stats(listener, &home->stats,
1645                             (home->type == HOME_TYPE_AUTH));
1646         cprintf(listener, "\toutstanding\t%d\n", home->currently_outstanding);
1647         return 1;
1648 }
1649 #endif
1650
1651 static int command_stats_client(rad_listen_t *listener, int argc, char *argv[])
1652 {
1653         int auth = TRUE;
1654         RADCLIENT *client;
1655
1656         if (argc < 1) {
1657                 cprintf(listener, "ERROR: Must specify [auth/acct]\n");
1658                 return 0;
1659         }
1660
1661         if (strcmp(argv[0], "auth") == 0) {
1662                 auth = TRUE;
1663
1664         } else if (strcmp(argv[0], "acct") == 0) {
1665 #ifdef WITH_ACCOUNTING
1666                 auth = FALSE;
1667 #else
1668                 cprintf(listener, "ERROR: This server was built without accounting support.\n");
1669                 return 0;
1670 #endif
1671
1672         } else {
1673                 cprintf(listener, "ERROR: Unknown statistics type\n");
1674                 return 0;
1675         }
1676
1677         /*
1678          *      Global results for all client.
1679          */
1680         if (argc == 1) {
1681 #ifdef WITH_ACCOUNTING
1682                 if (!auth) {
1683                         return command_print_stats(listener,
1684                                                    &radius_acct_stats, auth);
1685                 }
1686 #endif
1687                 return command_print_stats(listener, &radius_auth_stats, auth);
1688         }
1689
1690         client = get_client(listener, argc - 1, argv + 1);
1691         if (!client) {
1692                 return 0;
1693         }
1694
1695 #ifdef WITH_ACCOUNTING
1696         if (!auth) {
1697                 return command_print_stats(listener, client->acct, auth);
1698         }
1699 #endif
1700
1701         return command_print_stats(listener, client->auth, auth);
1702 }
1703
1704
1705 static int command_add_client_file(rad_listen_t *listener, int argc, char *argv[])
1706 {
1707         RADCLIENT *c;
1708
1709         if (argc < 1) {
1710                 cprintf(listener, "ERROR: <file> is required\n");
1711                 return 0;
1712         }
1713
1714         /*
1715          *      Read the file and generate the client.
1716          */
1717         c = client_read(argv[0], FALSE, FALSE);
1718         if (!c) {
1719                 cprintf(listener, "ERROR: Unknown error reading client file.\n");
1720                 return 0;
1721         }
1722
1723         if (!client_add(NULL, c)) {
1724                 cprintf(listener, "ERROR: Unknown error inserting new client.\n");
1725                 client_free(c);
1726                 return 0;
1727         }
1728
1729         return 1;
1730 }
1731
1732
1733 static fr_command_table_t command_table_add_client[] = {
1734         { "file", FR_WRITE,
1735           "add client file <filename> - Add new client definition from <filename>",
1736           command_add_client_file, NULL },
1737
1738         { NULL, 0, NULL, NULL, NULL }
1739 };
1740
1741
1742 static fr_command_table_t command_table_add[] = {
1743         { "client", FR_WRITE,
1744           "add client <command> - Add client configuration commands",
1745           NULL, command_table_add_client },
1746
1747         { NULL, 0, NULL, NULL, NULL }
1748 };
1749
1750
1751 #ifdef WITH_PROXY
1752 static fr_command_table_t command_table_set_home[] = {
1753         { "state", FR_WRITE,
1754           "set home_server state <ipaddr> <port> [proto] [alive|dead] - set state for given home server",
1755           command_set_home_server_state, NULL },
1756
1757         { NULL, 0, NULL, NULL, NULL }
1758 };
1759 #endif
1760
1761 static fr_command_table_t command_table_set_module[] = {
1762         { "config", FR_WRITE,
1763           "set module config <module> variable value - set configuration for <module>",
1764           command_set_module_config, NULL },
1765
1766         { "status", FR_WRITE,
1767           "set module status [alive|dead] - set the module to be alive or dead (always return \"fail\")",
1768           command_set_module_status, NULL },
1769
1770         { NULL, 0, NULL, NULL, NULL }
1771 };
1772
1773
1774 static fr_command_table_t command_table_set[] = {
1775         { "module", FR_WRITE,
1776           "set module <command> - set module commands",
1777           NULL, command_table_set_module },
1778 #ifdef WITH_PROXY
1779         { "home_server", FR_WRITE,
1780           "set home_server <command> - set home server commands",
1781           NULL, command_table_set_home },
1782 #endif
1783
1784         { NULL, 0, NULL, NULL, NULL }
1785 };
1786
1787
1788 static fr_command_table_t command_table_stats[] = {
1789         { "client", FR_READ,
1790           "stats client [auth/acct] <ipaddr> "
1791 #ifdef WITH_TCP
1792           "[proto] "
1793 #endif
1794           "- show statistics for given client, or for all clients (auth or acct)",
1795           command_stats_client, NULL },
1796 #ifdef WITH_PROXY
1797         { "home_server", FR_READ,
1798           "stats home_server [<ipaddr>/auth/acct] <port> - show statistics for given home server (ipaddr and port), or for all home servers (auth or acct)",
1799           command_stats_home_server, NULL },
1800 #endif
1801
1802 #ifdef WITH_DETAIL
1803         { "detail", FR_READ,
1804           "stats detail <filename> - show statistics for the given detail file",
1805           command_stats_detail, NULL },
1806 #endif
1807
1808         { NULL, 0, NULL, NULL, NULL }
1809 };
1810
1811 static fr_command_table_t command_table[] = {
1812         { "add", FR_WRITE, NULL, NULL, command_table_add },
1813         { "debug", FR_WRITE,
1814           "debug <command> - debugging commands",
1815           NULL, command_table_debug },
1816         { "hup", FR_WRITE,
1817           "hup [module] - sends a HUP signal to the server, or optionally to one module",
1818           command_hup, NULL },
1819         { "inject", FR_WRITE,
1820           "inject <command> - commands to inject packets into a running server",
1821           NULL, command_table_inject },
1822         { "reconnect", FR_READ,
1823           "reconnect - reconnect to a running server",
1824           NULL, NULL },         /* just here for "help" */
1825         { "terminate", FR_WRITE,
1826           "terminate - terminates the server, and cause it to exit",
1827           command_terminate, NULL },
1828         { "set", FR_WRITE, NULL, NULL, command_table_set },
1829         { "show",  FR_READ, NULL, NULL, command_table_show },
1830         { "stats",  FR_READ, NULL, NULL, command_table_stats },
1831
1832         { NULL, 0, NULL, NULL, NULL }
1833 };
1834
1835
1836 static void command_socket_free(rad_listen_t *this)
1837 {
1838         fr_command_socket_t *sock = this->data;
1839
1840         unlink(sock->copy);
1841         free(sock->copy);
1842         sock->copy = NULL;
1843 }
1844
1845
1846 /*
1847  *      Parse the unix domain sockets.
1848  *
1849  *      FIXME: TCP + SSL, after RadSec is in.
1850  */
1851 static int command_socket_parse(CONF_SECTION *cs, rad_listen_t *this)
1852 {
1853         fr_command_socket_t *sock;
1854
1855         if (check_config) return 0;
1856
1857         sock = this->data;
1858
1859         if (cf_section_parse(cs, sock, command_config) < 0) {
1860                 return -1;
1861         }
1862
1863         sock->copy = NULL;
1864         if (sock->path) sock->copy = strdup(sock->path);
1865
1866 #if defined(HAVE_GETPEEREID) || defined (SO_PEERCRED)
1867         if (sock->uid_name) {
1868                 struct passwd *pw;
1869
1870                 pw = getpwnam(sock->uid_name);
1871                 if (!pw) {
1872                         radlog(L_ERR, "Failed getting uid for %s: %s",
1873                                sock->uid_name, strerror(errno));
1874                         return -1;
1875                 }
1876
1877                 sock->uid = pw->pw_uid;
1878         }
1879
1880         if (sock->gid_name) {
1881                 struct group *gr;
1882
1883                 gr = getgrnam(sock->gid_name);
1884                 if (!gr) {
1885                         radlog(L_ERR, "Failed getting gid for %s: %s",
1886                                sock->gid_name, strerror(errno));
1887                         return -1;
1888                 }
1889                 sock->gid = gr->gr_gid;
1890         }
1891
1892 #else  /* can't get uid or gid of connecting user */
1893
1894         if (sock->uid_name || sock->gid_name) {
1895                 radlog(L_ERR, "System does not support uid or gid authentication for sockets");
1896                 return -1;
1897         }
1898
1899 #endif
1900
1901         if (!sock->mode_name) {
1902                 sock->mode = FR_READ;
1903         } else {
1904                 sock->mode = fr_str2int(mode_names, sock->mode_name, 0);
1905                 if (!sock->mode) {
1906                         radlog(L_ERR, "Invalid mode name \"%s\"",
1907                                sock->mode_name);
1908                         return -1;
1909                 }
1910         }
1911
1912         /*
1913          *      FIXME: check for absolute pathnames?
1914          *      check for uid/gid on the other end...
1915          */
1916
1917         this->fd = fr_server_domain_socket(sock->path);
1918         if (this->fd < 0) {
1919                 return -1;
1920         }
1921
1922         return 0;
1923 }
1924
1925 static int command_socket_print(rad_listen_t *this, char *buffer, size_t bufsize)
1926 {
1927         fr_command_socket_t *sock = this->data;
1928
1929         snprintf(buffer, bufsize, "command file %s", sock->path);
1930         return 1;
1931 }
1932
1933
1934 /*
1935  *      String split routine.  Splits an input string IN PLACE
1936  *      into pieces, based on spaces.
1937  */
1938 static int str2argv(char *str, char **argv, int max_argc)
1939 {
1940         int argc = 0;
1941         size_t len;
1942         char buffer[1024];
1943
1944         while (*str) {
1945                 if (argc >= max_argc) return argc;
1946
1947                 /*
1948                  *      Chop out comments early.
1949                  */
1950                 if (*str == '#') {
1951                         *str = '\0';
1952                         break;
1953                 }
1954
1955                 while ((*str == ' ') ||
1956                        (*str == '\t') ||
1957                        (*str == '\r') ||
1958                        (*str == '\n')) *(str++) = '\0';
1959
1960                 if (!*str) return argc;
1961
1962                 if ((*str == '\'') || (*str == '"')) {
1963                         char *p = str;
1964                         FR_TOKEN token;
1965
1966                         token = gettoken((const char **) &p, buffer,
1967                                          sizeof(buffer));
1968                         if ((token != T_SINGLE_QUOTED_STRING) &&
1969                             (token != T_DOUBLE_QUOTED_STRING)) {
1970                                 return -1;
1971                         }
1972
1973                         len = strlen(buffer);
1974                         if (len >= (size_t) (p - str)) {
1975                                 return -1;
1976                         }
1977
1978                         memcpy(str, buffer, len + 1);
1979                         argv[argc] = str;
1980                         str = p;
1981
1982                 } else {
1983                         argv[argc] = str;
1984                 }
1985                 argc++;
1986
1987                 while (*str &&
1988                        (*str != ' ') &&
1989                        (*str != '\t') &&
1990                        (*str != '\r') &&
1991                        (*str != '\n')) str++;
1992         }
1993
1994         return argc;
1995 }
1996
1997 static void print_help(rad_listen_t *listener,
1998                        fr_command_table_t *table, int recursive)
1999 {
2000         int i;
2001
2002         for (i = 0; table[i].command != NULL; i++) {
2003                 if (table[i].help) {
2004                         cprintf(listener, "%s\n",
2005                                 table[i].help);
2006                 } else {
2007                         cprintf(listener, "%s <command> - do sub-command of %s\n",
2008                                 table[i].command, table[i].command);
2009                 }
2010
2011                 if (recursive && table[i].table) {
2012                         print_help(listener, table[i].table, recursive);
2013                 }
2014         }
2015 }
2016
2017 #define MAX_ARGV (16)
2018
2019 /*
2020  *      Check if an incoming request is "ok"
2021  *
2022  *      It takes packets, not requests.  It sees if the packet looks
2023  *      OK.  If so, it does a number of sanity checks on it.
2024  */
2025 static int command_domain_recv(rad_listen_t *listener,
2026                                UNUSED RAD_REQUEST_FUNP *pfun,
2027                                UNUSED REQUEST **prequest)
2028 {
2029         int i, rcode;
2030         ssize_t len;
2031         int argc;
2032         char *my_argv[MAX_ARGV], **argv;
2033         fr_command_table_t *table;
2034         fr_command_socket_t *co = listener->data;
2035
2036         *pfun = NULL;
2037         *prequest = NULL;
2038
2039         do {
2040                 ssize_t c;
2041                 char *p;
2042
2043                 len = recv(listener->fd, co->buffer + co->offset,
2044                            sizeof(co->buffer) - co->offset - 1, 0);
2045                 if (len == 0) goto close_socket; /* clean close */
2046
2047                 if (len < 0) {
2048                         if ((errno == EAGAIN) || (errno == EINTR)) {
2049                                 return 0;
2050                         }
2051                         goto close_socket;
2052                 }
2053
2054                 /*
2055                  *      CTRL-D
2056                  */
2057                 if ((co->offset == 0) && (co->buffer[0] == 0x04)) {
2058                 close_socket:
2059                         command_close_socket(listener);
2060                         return 0;
2061                 }
2062
2063                 /*
2064                  *      See if there are multiple lines in the buffer.
2065                  */
2066                 p = co->buffer + co->offset;
2067                 rcode = 0;
2068                 p[len] = '\0';
2069                 for (c = 0; c < len; c++) {
2070                         if ((*p == '\r') || (*p == '\n')) {
2071                                 rcode = 1;
2072                                 *p = '\0';
2073
2074                                 /*
2075                                  *      FIXME: do real buffering...
2076                                  *      handling of CTRL-C, etc.
2077                                  */
2078
2079                         } else if (rcode) {
2080                                 /*
2081                                  *      \r \n followed by ASCII...
2082                                  */
2083                                 break;
2084                         }
2085
2086                         p++;
2087                 }
2088
2089                 co->offset += len;
2090
2091                 /*
2092                  *      Saw CR/LF.  Set next element, and exit.
2093                  */
2094                 if (rcode) {
2095                         co->next = p - co->buffer;
2096                         break;
2097                 }
2098
2099                 if (co->offset >= (ssize_t) (sizeof(co->buffer) - 1)) {
2100                         radlog(L_ERR, "Line too long!");
2101                         goto close_socket;
2102                 }
2103
2104                 co->offset++;
2105         } while (1);
2106
2107         DEBUG("radmin> %s", co->buffer);
2108
2109         argc = str2argv(co->buffer, my_argv, MAX_ARGV);
2110         if (argc == 0) goto do_next; /* empty strings are OK */
2111
2112         if (argc < 0) {
2113                 cprintf(listener, "ERROR: Failed parsing command.\n");
2114                 goto do_next;
2115         }
2116
2117         argv = my_argv;
2118
2119         for (len = 0; len <= co->offset; len++) {
2120                 if (co->buffer[len] < 0x20) {
2121                         co->buffer[len] = '\0';
2122                         break;
2123                 }
2124         }
2125
2126         /*
2127          *      Hard-code exit && quit.
2128          */
2129         if ((strcmp(argv[0], "exit") == 0) ||
2130             (strcmp(argv[0], "quit") == 0)) goto close_socket;
2131
2132 #if 0
2133         if (!co->user[0]) {
2134                 if (strcmp(argv[0], "login") != 0) {
2135                         cprintf(listener, "ERROR: Login required\n");
2136                         goto do_next;
2137                 }
2138
2139                 if (argc < 3) {
2140                         cprintf(listener, "ERROR: login <user> <password>\n");
2141                         goto do_next;
2142                 }
2143
2144                 /*
2145                  *      FIXME: Generate && process fake RADIUS request.
2146                  */
2147                 if ((strcmp(argv[1], "root") == 0) &&
2148                     (strcmp(argv[2], "password") == 0)) {
2149                         strlcpy(co->user, argv[1], sizeof(co->user));
2150                         goto do_next;
2151                 }
2152
2153                 cprintf(listener, "ERROR: Login incorrect\n");
2154                 goto do_next;
2155         }
2156 #endif
2157
2158         table = command_table;
2159  retry:
2160         len = 0;
2161         for (i = 0; table[i].command != NULL; i++) {
2162                 if (strcmp(table[i].command, argv[0]) == 0) {
2163                         /*
2164                          *      Check permissions.
2165                          */
2166                         if (((co->mode & FR_WRITE) == 0) &&
2167                             ((table[i].mode & FR_WRITE) != 0)) {
2168                                 cprintf(listener, "ERROR: You do not have write permission.  See \"mode = rw\" in the \"listen\" section for this socket.\n");
2169                                 goto do_next;
2170                         }
2171
2172                         if (table[i].table) {
2173                                 /*
2174                                  *      This is the last argument, but
2175                                  *      there's a sub-table.  Print help.
2176                                  *
2177                                  */
2178                                 if (argc == 1) {
2179                                         table = table[i].table;
2180                                         goto do_help;
2181                                 }
2182
2183                                 argc--;
2184                                 argv++;
2185                                 table = table[i].table;
2186                                 goto retry;
2187                         }
2188
2189                         if ((argc == 2) && (strcmp(argv[1], "?") == 0)) goto do_help;
2190
2191                         if (!table[i].func) {
2192                                 cprintf(listener, "ERROR: Invalid command\n");
2193                                 goto do_next;
2194                         }
2195
2196                         len = 1;
2197                         rcode = table[i].func(listener,
2198                                               argc - 1, argv + 1);
2199                         break;
2200                 }
2201         }
2202
2203         /*
2204          *      No such command
2205          */
2206         if (!len) {
2207                 if ((strcmp(argv[0], "help") == 0) ||
2208                     (strcmp(argv[0], "?") == 0)) {
2209                         int recursive;
2210
2211                 do_help:
2212                         if ((argc > 1) && (strcmp(argv[1], "-r") == 0)) {
2213                                 recursive = TRUE;
2214                         } else {
2215                                 recursive = FALSE;
2216                         }
2217
2218                         print_help(listener, table, recursive);
2219                         goto do_next;
2220                 }
2221
2222                 cprintf(listener, "ERROR: Unknown command \"%s\"\n",
2223                         argv[0]);
2224         }
2225
2226  do_next:
2227         cprintf(listener, "radmin> ");
2228
2229         if (co->next <= co->offset) {
2230                 co->offset = 0;
2231         } else {
2232                 memmove(co->buffer, co->buffer + co->next,
2233                         co->offset - co->next);
2234                 co->offset -= co->next;
2235         }
2236
2237         return 0;
2238 }
2239
2240
2241 static int command_domain_accept(rad_listen_t *listener,
2242                                  UNUSED RAD_REQUEST_FUNP *pfun,
2243                                  UNUSED REQUEST **prequest)
2244 {
2245         int newfd;
2246         uint32_t magic;
2247         rad_listen_t *this;
2248         socklen_t salen;
2249         struct sockaddr_storage src;
2250         fr_command_socket_t *sock = listener->data;
2251
2252         salen = sizeof(src);
2253
2254         DEBUG2(" ... new connection request on command socket.");
2255
2256         *pfun = NULL;
2257         *prequest = NULL;
2258
2259         newfd = accept(listener->fd, (struct sockaddr *) &src, &salen);
2260         if (newfd < 0) {
2261                 /*
2262                  *      Non-blocking sockets must handle this.
2263                  */
2264                 if (errno == EWOULDBLOCK) {
2265                         return 0;
2266                 }
2267
2268                 DEBUG2(" ... failed to accept connection.");
2269                 return 0;
2270         }
2271
2272         /*
2273          *      Perform user authentication.
2274          */
2275         if (sock->uid_name || sock->gid_name) {
2276                 uid_t uid;
2277                 gid_t gid;
2278
2279                 if (getpeereid(listener->fd, &uid, &gid) < 0) {
2280                         radlog(L_ERR, "Failed getting peer credentials for %s: %s",
2281                                sock->path, strerror(errno));
2282                         close(newfd);
2283                         return 0;
2284                 }
2285
2286                 if (sock->uid_name && (sock->uid != uid)) {
2287                         radlog(L_ERR, "Unauthorized connection to %s from uid %ld",
2288                                sock->path, (long int) uid);
2289                         close(newfd);
2290                         return 0;
2291                 }
2292
2293                 if (sock->gid_name && (sock->gid != gid)) {
2294                         radlog(L_ERR, "Unauthorized connection to %s from gid %ld",
2295                                sock->path, (long int) gid);
2296                         close(newfd);
2297                         return 0;
2298                 }
2299         }
2300
2301         /*
2302          *      Write 32-bit magic number && version information.
2303          */
2304         magic = htonl(0xf7eead15);
2305         if (write(newfd, &magic, 4) < 0) {
2306                 radlog(L_ERR, "Failed writing initial data to socket: %s",
2307                        strerror(errno));
2308                 close(newfd);
2309                 return 0;
2310         }
2311         magic = htonl(1);       /* protocol version */
2312         if (write(newfd, &magic, 4) < 0) {
2313                 radlog(L_ERR, "Failed writing initial data to socket: %s",
2314                        strerror(errno));
2315                 close(newfd);
2316                 return 0;
2317         }
2318
2319
2320         /*
2321          *      Add the new listener.
2322          */
2323         this = listen_alloc(listener->type);
2324         if (!this) return 0;
2325
2326         /*
2327          *      Copy everything, including the pointer to the socket
2328          *      information.
2329          */
2330         sock = this->data;
2331         memcpy(this, listener, sizeof(*this));
2332         this->status = RAD_LISTEN_STATUS_INIT;
2333         this->next = NULL;
2334         this->data = sock;      /* fix it back */
2335
2336         sock->offset = 0;
2337         sock->user[0] = '\0';
2338         sock->path = ((fr_command_socket_t *) listener->data)->path;
2339         sock->mode = ((fr_command_socket_t *) listener->data)->mode;
2340
2341         this->fd = newfd;
2342         this->recv = command_domain_recv;
2343
2344         /*
2345          *      Tell the event loop that we have a new FD
2346          */
2347         event_new_fd(this);
2348
2349         return 0;
2350 }
2351
2352
2353 /*
2354  *      Send an authentication response packet
2355  */
2356 static int command_domain_send(UNUSED rad_listen_t *listener,
2357                                UNUSED REQUEST *request)
2358 {
2359         return 0;
2360 }
2361
2362
2363 static int command_socket_encode(UNUSED rad_listen_t *listener,
2364                                  UNUSED REQUEST *request)
2365 {
2366         return 0;
2367 }
2368
2369
2370 static int command_socket_decode(UNUSED rad_listen_t *listener,
2371                                  UNUSED REQUEST *request)
2372 {
2373         return 0;
2374 }
2375
2376 #endif /* WITH_COMMAND_SOCKET */