src/router/router.c

   1 #include "router.h"
   2 #include <sys/types.h>
   3 #include <signal.h>
   4
   5
   6 char* router_resource;
   7 transport_router_registrar* routt;
   8
   9 void _build_trusted_sites( transport_router_registrar* router );
  10
  11 void sig_hup_handler( int a ) {
  12         router_registrar_free( routt );
  13         config_reader_free();
  14         log_free();
  15         free( router_resource );
  16         exit(0);
  17 }
  18
  19
  20 int main( int argc, char* argv[] ) {
  21
  22         if( argc < 2 ) {
  23                 fatal_handler( "Usage: %s <path_to_config_file>", argv[0] );
  24                 exit(0);
  25         }
  26
  27         char b[256];
  28         memset(b,0,256);
  29         jid_get_domain( "client@elroy/test", b );
  30         fprintf(stderr, "Domain %s\n", b );
  31
  32         config_reader_init( argv[1] );
  33         if( conf_reader == NULL ) fatal_handler( "main(): Config is NULL" );
  34
  35         /* laod the config options */
  36         char* server                    = config_value("//router/transport/server");
  37         char* port                              = config_value("//router/transport/port");
  38         char* username                  = config_value("//router/transport/username");
  39         char* password                  = config_value("//router/transport/password");
  40         router_resource         = config_value("//router/transport/resource");
  41         char* con_timeout               = config_value("//router/transport/connect_timeout" );
  42         char* max_retries               = config_value("//router/transport/max_reconnect_attempts" );
  43         char* component         = config_value("//router/component" );
  44
  45         fprintf(stderr, "Router connecting as \nserver: %s \nport: %s \nuser:%s \nresource:%s\n",
  46                         server, port, username, router_resource );
  47
  48         int iport                       = atoi( port );
  49         int con_itimeout        = atoi( con_timeout );
  50         int max_retries_        = atoi(max_retries);
  51         int icomponent = 0;
  52         if(component)
  53                 icomponent = atoi(component);
  54
  55         if( iport < 1 ) {
  56                 fatal_handler( "Port is negative or 0" );
  57                 return 99;
  58         }
  59
  60
  61         /* build the router_registrar */
  62         transport_router_registrar* router_registrar =
  63                 router_registrar_init( server, iport, username, password, router_resource, 0, con_itimeout, icomponent );
  64
  65         routt = router_registrar;
  66
  67         free(server);
  68         free(port);
  69         free(username);
  70         free(password);
  71         free(con_timeout);
  72         free(max_retries);
  73
  74         signal(SIGHUP,sig_hup_handler);
  75
  76
  77         int counter = 0;
  78         /* wait for incoming... */
  79         while( ++counter <= max_retries_ ) {
  80
  81                 /* connect to jabber */
  82                 if( router_registrar_connect( router_registrar ) )  {
  83                         info_handler( "Connected..." );
  84                         fprintf(stderr, "- Connected -\n");
  85                         counter = 0;
  86                         listen_loop( router_registrar );
  87                 } else
  88                         fatal_handler( "Could not connect to Jabber Server" );
  89
  90                 /* this should never happen */
  91                 warning_handler( "Jabber server probably went away, attempting reconnect" );
  92
  93                 sleep(5);
  94         }
  95
  96
  97         router_registrar_free( router_registrar );
  98         config_reader_free();
  99         return 1;
 100
 101 }
 102
 103 transport_router_registrar* router_registrar_init( char* server,
 104                 int port, char* username, char* password,
 105                 char* resource, int client_timeout, int con_timeout, int component ) {
 106
 107         if( server == NULL ) { return NULL; }
 108
 109         /* allocate a new router_registrar object */
 110         size_t size = sizeof( transport_router_registrar );
 111         transport_router_registrar* router_registrar = (transport_router_registrar*) safe_malloc( size );
 112
 113         router_registrar->client_timeout        = client_timeout;
 114         router_registrar->jabber = jabber_connect_init( server, port, username, password, resource, con_timeout, component );
 115         _build_trusted_sites( router_registrar );
 116         info_handler( "Trusted stuff %s, %s, %s", router_registrar->trusted_servers[0],
 117                 router_registrar->trusted_clients[0], router_registrar->trusted_clients[1] );
 118         return router_registrar;
 119
 120 }
 121
 122 void _build_trusted_sites( transport_router_registrar* router ) {
 123
 124         router->trusted_servers = (char**) safe_malloc(sizeof(char**));
 125         router->trusted_clients = (char**) safe_malloc(sizeof(char**));
 126
 127         *(router->trusted_servers) = (char*) safe_malloc(ROUTER_MAX_TRUSTED);
 128         *(router->trusted_clients) = (char*) safe_malloc(ROUTER_MAX_TRUSTED);
 129
 130         int i = 0;
 131         while( ++i ) {
 132                 char* server = config_value("//router/trusted_domains/server%d", i );
 133                 if(server == NULL)
 134                         break;
 135
 136                 router->trusted_servers[i-1] = server;
 137         }
 138
 139         i = 0;
 140         while( ++i ) {
 141                 char* client = config_value( "//router/trusted_domains/client%d", i );
 142                 if(client == NULL)
 143                         break;
 144                 router->trusted_clients[i-1] = client;
 145         }
 146
 147         if( router->trusted_servers[0] == NULL ||
 148                         router->trusted_clients[0] == NULL )
 149
 150                 fatal_handler( "You must specify at least one trusted server and client in the config file");
 151 }
 152
 153
 154 jabber_connect* jabber_connect_init( char* server,
 155                 int port, char* username, char* password, char* resource, int connect_timeout, int component ) {
 156
 157         size_t len = sizeof(jabber_connect);
 158         jabber_connect* jabber = (jabber_connect*) safe_malloc( len );
 159
 160         jabber->port                            = port;
 161         jabber->connect_timeout = connect_timeout;
 162
 163         jabber->server                          = strdup(server);
 164         jabber->username                        = strdup(username);
 165         jabber->password                        = strdup(password);
 166         jabber->resource                        = strdup(resource);
 167
 168         if( jabber->server == NULL || jabber->username == NULL ||
 169                         jabber->password == NULL || jabber->resource == NULL ) {
 170                 fatal_handler( "jabber_init(): Out of Memory" );
 171                 return NULL;
 172         }
 173
 174         /* build the transport client */
 175         jabber->t_client = client_init( jabber->server, jabber->port, component );
 176
 177         return jabber;
 178 }
 179
 180 /* connect the router_registrar to jabber */
 181 int router_registrar_connect( transport_router_registrar* router ) {
 182         return j_connect( router->jabber );
 183 }
 184
 185 /* connect a jabber_connect object jabber */
 186 int j_connect( jabber_connect* jabber ) {
 187         if( jabber == NULL ) { return 0; }
 188         return client_connect( jabber->t_client,
 189                         jabber->username, jabber->password, jabber->resource,
 190                         jabber->connect_timeout, AUTH_DIGEST );
 191 }
 192
 193 int fill_fd_set( transport_router_registrar* router, fd_set* set ) {
 194
 195         int max_fd;
 196         FD_ZERO(set);
 197
 198         int router_fd = router->jabber->t_client->session->sock_obj->sock_fd;
 199         max_fd = router_fd;
 200         FD_SET( router_fd, set );
 201
 202         server_class_node* cur_node = router->server_class_list;
 203         while( cur_node != NULL ) {
 204                 int cur_class_fd = cur_node->jabber->t_client->session->sock_obj->sock_fd;
 205                 if( cur_class_fd > max_fd )
 206                         max_fd = cur_class_fd;
 207                 FD_SET( cur_class_fd, set );
 208                 cur_node = cur_node->next;
 209         }
 210
 211         FD_CLR( 0, set );
 212         return max_fd;
 213 }
 214
 215
 216 void listen_loop( transport_router_registrar* router ) {
 217
 218         if( router == NULL )
 219                 return;
 220
 221         int select_ret;
 222         int router_fd = router->jabber->t_client->session->sock_obj->sock_fd;
 223         transport_message* cur_msg;
 224
 225         while(1) {
 226
 227                 fd_set listen_set;
 228                 int max_fd = fill_fd_set( router, &listen_set );
 229
 230                 if( max_fd < 1 )
 231                         fatal_handler( "fill_fd_set return bogus max_fd: %d", max_fd );
 232
 233                 int num_handled = 0;
 234                 info_handler( "Going into select" );
 235
 236                 if( (select_ret=select(max_fd+ 1, &listen_set, NULL, NULL, NULL)) < 0 ) {
 237
 238                         warning_handler( "Select returned error %d", select_ret );
 239                         warning_handler( "Select Error %d on fd %d", errno );
 240                         perror( "Select Error" );
 241                         warning_handler( "Errors: EBADF %d, EINTR %d, EINVAL %d, ENOMEM %d",
 242                                         EBADF, EINTR, EINVAL, ENOMEM );
 243                         continue;
 244
 245                 } else {
 246
 247                         info_handler( "Select returned %d", select_ret );
 248
 249                         if( FD_ISSET( router_fd, &listen_set ) ) {
 250                                 cur_msg = client_recv( router->jabber->t_client, 1 );
 251
 252                                 /* We only process a message if we have some trusted servers and the current
 253                                         message came from one of those servers */
 254                                 if(router->trusted_servers && router->trusted_servers[0]) {
 255                                         int i = 0;
 256                                         int found = 0;
 257
 258                                         char server_buf[256];
 259                                         memset(server_buf,0,256);
 260                                         jid_get_domain( cur_msg->sender, server_buf );
 261                                         info_handler("Received top level message from %s", server_buf );
 262
 263                                         while(1) {
 264                                                 if(router->trusted_servers[i] == NULL)
 265                                                         break;
 266                                                 if(!strcmp(router->trusted_servers[i], server_buf)) {
 267                                                         found = 1;
 268                                                         break;
 269                                                 }
 270                                                 i++;
 271                                         }
 272                                         if(found)
 273                                                 router_registrar_handle_msg( router, cur_msg );
 274                                         else
 275                                                 warning_handler( "Received top level message from unpriveleged sender %s", cur_msg->sender );
 276                                 }
 277
 278                                 message_free( cur_msg );
 279                                 if( ++num_handled == select_ret )
 280                                         continue;
 281                         }
 282
 283                         /* cycle through the children and find any whose fd's are ready for reading */
 284                         server_class_node* cur_node = router->server_class_list;
 285                         while( cur_node != NULL ) {
 286                                 int cur_fd = cur_node->jabber->t_client->session->sock_obj->sock_fd;
 287
 288                                 if( FD_ISSET(cur_fd, &listen_set) ) {
 289                                         ++num_handled;
 290                                         FD_CLR(cur_fd,&listen_set);
 291
 292                                         cur_msg = client_recv( cur_node->jabber->t_client, 1 );
 293                                         info_handler( "%s received from %s", cur_node->server_class, cur_msg->sender );
 294                                         int handle_ret = server_class_handle_msg( router, cur_node, cur_msg );
 295
 296                                         if( handle_ret == -1 ) {
 297                                                 warning_handler( "server_class_handle_msg() returned -1" );
 298                                                 cur_node = router->server_class_list; /*start over*/
 299                                                 continue;
 300
 301                                         } else if( handle_ret == 0 ) {
 302                                                 /* delete and continue */
 303                                                 warning_handler( "server_class_handle_msg() returned 0" );
 304                                                 server_class_node* tmp_node = cur_node->next;
 305                                                 remove_server_class( router, cur_node );
 306                                                 cur_node = tmp_node;
 307                                                 continue;
 308                                         }
 309
 310                                         info_handler( "%s handled message successfully", cur_node->server_class );
 311                                         /* dont free message here */
 312                                         if( num_handled == select_ret )
 313                                                 break;
 314                                 }
 315                                 if( num_handled == select_ret )
 316                                         break;
 317                                 cur_node = cur_node->next;
 318
 319                         } /* cycling through the server_class list */
 320
 321                 } /* no select errors */
 322         }
 323 }
 324
 325
 326 /* determine where to route top level messages */
 327 int router_registrar_handle_msg( transport_router_registrar* router_registrar, transport_message* msg ) {
 328
 329         info_handler( "Received class: %s : command %s ", msg->router_class, msg->router_command );
 330
 331         if( router_registrar == NULL || msg == NULL ) { return 0; }
 332
 333         // user issued a ruoter query
 334         /* a query command has router_command="query" and the actual query type
 335                 is the content of the message */
 336         if( !strcmp(msg->router_command,"query")) {
 337                 info_handler( "Router received query command" );
 338
 339                 // user issues a servers query
 340                 if( !strcmp(msg->body, "servers")) {
 341
 342                         info_handler( "Router received servers query command" );
 343                         router_return_server_info( router_registrar, msg );
 344                         return 1;
 345                 }
 346         }
 347
 348
 349         info_handler("Looking for server_class_node %s...",msg->router_class);
 350         server_class_node* active_class_node = find_server_class( router_registrar, msg->router_class );
 351
 352         if( active_class_node == NULL ) {
 353                 info_handler("Could not find server_class_node %s, creating one.",msg->router_class);
 354
 355                 /* there is no server_class for msg->router_class so we build it here */
 356                 if( strcmp( msg->router_command, "register") == 0 ) {
 357
 358                         info_handler("Adding server_class_node for %s",msg->router_class);
 359                         active_class_node =
 360                                 init_server_class( router_registrar, msg->sender, msg->router_class );
 361
 362                         if( active_class_node == NULL ) {
 363                                 fatal_handler( "router_listen(): active_class_node == NULL for %s", msg->sender );
 364                                 return 0;
 365                         }
 366
 367                         if (router_registrar->server_class_list != NULL) {
 368                                 active_class_node->next = router_registrar->server_class_list;
 369                                 router_registrar->server_class_list->prev = active_class_node;
 370                         }
 371                         router_registrar->server_class_list = active_class_node;
 372
 373                         //spawn_server_class( (void*) active_class_node );
 374
 375                 } else {
 376                         warning_handler( "router_register_handler_msg(): Bad Command [%s] for class [%s]",
 377                                 msg->router_command, msg->router_class );
 378                 }
 379
 380         } else if( strcmp( msg->router_command, "register") == 0 ) {
 381                 /* there is a server_class for msg->router_class so we
 382                         need to either add a new server_node or update the existing one */
 383
 384
 385                 server_node* s_node = find_server_node( active_class_node, msg->sender );
 386
 387                 if( s_node != NULL ) {
 388                         s_node->available = 1;
 389                         s_node->upd_time = time(NULL);
 390                         info_handler( "Found matching registered server: %s. Updating.",
 391                                         s_node->remote_id );
 392                 } else {
 393                         s_node = init_server_node( msg->sender );
 394
 395                         info_handler( "Adding server_node for: %s.", s_node->remote_id );
 396
 397                         if (s_node == NULL ) {
 398                                 warning_handler( " Could not create new xerver_node for %s.",
 399                                         msg->sender );
 400                                 return 0;
 401                         }
 402
 403                         s_node->next = active_class_node->current_server_node->next;
 404                         s_node->prev = active_class_node->current_server_node;
 405
 406                         active_class_node->current_server_node->next->prev = s_node;
 407                         active_class_node->current_server_node->next = s_node;
 408                 }
 409
 410
 411         } else if( strcmp( msg->router_command, "unregister") == 0 ) {
 412
 413                 if( ! unregister_server_node( active_class_node, msg->sender ) )
 414                         remove_server_class( router_registrar, active_class_node );
 415
 416         } else {
 417                 warning_handler( "router_register_handler_msg(): Bad Command [%s] for class [%s]",
 418                         msg->router_command, msg->router_class );
 419         }
 420
 421         return 1;
 422 }
 423
 424
 425 /* removes a server class node from the top level router_registrar */
 426 int unregister_server_node( server_class_node* active_class_node, char* remote_id ) {
 427
 428         server_node* d_node = find_server_node( active_class_node, remote_id );
 429
 430         if ( d_node != NULL ) {
 431
 432                 info_handler( "Removing server_node for: %s.", d_node->remote_id );
 433
 434                 if ( d_node->next == NULL ) {
 435                         warning_handler( "NEXT is NULL in ring [%s] -- "
 436                                 "THIS SHOULD NEVER HAPPEN",
 437                                 d_node->remote_id );
 438
 439                 }
 440
 441                 if ( d_node->prev == NULL ) {
 442                         warning_handler( "PREV is NULL in a ring [%s] -- "
 443                                 "THIS SHOULD NEVER HAPPEN",
 444                                 d_node->remote_id );
 445
 446                 }
 447
 448                 if ( d_node->next == d_node && d_node->prev == d_node) {
 449                         info_handler( "Last node, setting ring to NULL: %s.",
 450                                 d_node->remote_id );
 451
 452                         active_class_node->current_server_node = NULL;
 453
 454                         server_node_free( d_node );
 455                         return 0;
 456
 457                 } else {
 458                         info_handler( "Nodes remain, splicing: %s, %s",
 459                                 d_node->prev->remote_id,
 460                                 d_node->next->remote_id);
 461
 462                 info_handler( "d_node => %x, next => %x, prev => %x",
 463                                         d_node, d_node->next, d_node->prev );
 464
 465
 466                         d_node->prev->next = d_node->next;
 467                         d_node->next->prev = d_node->prev;
 468
 469                         info_handler( "prev => %x, prev->next => %x, prev->prev => %x",
 470                                 d_node->prev, d_node->prev->next, d_node->prev->prev );
 471
 472                         info_handler( "next => %x, next->next => %x, next->prev => %x",
 473                                 d_node->next, d_node->next->next, d_node->next->prev );
 474
 475                         if (active_class_node->current_server_node == d_node)
 476                                 active_class_node->current_server_node = d_node->next;
 477
 478
 479                         server_node_free( d_node );
 480                 }
 481         }
 482
 483         return 1;
 484 }
 485
 486 server_node * find_server_node ( server_class_node * class, const char * remote_id ) {
 487
 488         if ( class == NULL ) {
 489                 warning_handler(" find_server_node(): bad arg!");
 490                 return NULL;
 491         }
 492
 493         server_node * start_node = class->current_server_node;
 494         server_node * node = class->current_server_node;
 495
 496         do {
 497                 if (node == NULL)
 498                         return NULL;
 499
 500                 if ( strcmp(node->remote_id, remote_id) == 0 )
 501                         return node;
 502
 503                 node = node->next;
 504
 505         } while ( node != start_node );
 506
 507         return NULL;
 508 }
 509
 510 /* if we return -1, then we just deleted the server_class you were looking for
 511         if we return 0, then some other error has occured
 512         we return 1 otherwise */
 513 int remove_server_class( transport_router_registrar* router, server_class_node* class ) {
 514         if( class == NULL )
 515                 return 0;
 516
 517         transport_message * msg = NULL;
 518         while ( (msg = client_recv(class->jabber->t_client, 0)) != NULL ) {
 519                 server_class_handle_msg(router, class, msg);
 520                 message_free(msg);
 521         }
 522
 523         free( class->server_class );
 524         class->server_class = NULL;
 525
 526         find_server_class( router, router_resource ); /* find deletes for us */
 527
 528         if( router->server_class_list == NULL )
 529                 return 0;
 530         return 1;
 531 }
 532
 533 server_class_node * find_server_class ( transport_router_registrar * router, const char * class_id ) {
 534
 535         if ( router == NULL ) {
 536                 warning_handler(" find_server_class(): bad arg!");
 537                 return NULL;
 538         }
 539
 540         info_handler( "Finding server class for %s", class_id );
 541         server_class_node * class = router->server_class_list;
 542         server_class_node * dead_class = NULL;
 543
 544         while ( class != NULL ) {
 545
 546                 if ( class->server_class == NULL ) {
 547                         info_handler( "Found an empty server class" );
 548
 549                         if ( class->prev != NULL ) {
 550                                 class->prev->next = class->next;
 551                                 if( class->next != NULL ) {
 552                                         class->next->prev = class->prev;
 553                                 }
 554
 555                         } else {
 556                                 info_handler( "Empty class is the first on the list" );
 557                                 if( class->next != NULL )
 558                                         router->server_class_list = class->next;
 559
 560                                 else { /* we're the last class node in the class node list */
 561                                         info_handler( "Empty class is the last on the list" );
 562                                         server_class_node_free( router->server_class_list );
 563                                         router->server_class_list = NULL;
 564                                         break;
 565                                 }
 566
 567                         }
 568
 569                         dead_class = class;
 570                         class = class->next;
 571
 572                         info_handler( "Tossing our dead class" );
 573                         server_class_node_free( dead_class );
 574
 575                         if ( class == NULL )
 576                                 return NULL;
 577                 }
 578
 579                 if ( strcmp(class->server_class, class_id) == 0 )
 580                         return class;
 581                 info_handler( "%s != %s", class->server_class, class_id );
 582
 583                 class = class->next;
 584         }
 585
 586         return NULL;
 587 }
 588
 589 /* builds a new server class and connects to the jabber server with the new resource */
 590 server_class_node* init_server_class(
 591                 transport_router_registrar* router, char* remote_id, char* server_class ) {
 592
 593         size_t len = sizeof( server_class_node );
 594         server_class_node* node = (server_class_node*) safe_malloc( len );
 595
 596         node->jabber = jabber_connect_init( router->jabber->server,
 597                         router->jabber->port, router->jabber->username,
 598                         router->jabber->password, server_class, router->jabber->connect_timeout, router->component );
 599
 600
 601
 602         node->server_class = strdup( server_class );
 603         if( server_class == NULL ) {
 604                 fatal_handler( "imit_server_class(): out of memory for %s", server_class );
 605                 return NULL;
 606         }
 607
 608         info_handler( "Received class to init_server_class: %s", server_class );
 609         node->current_server_node = init_server_node( remote_id );
 610         if( node->current_server_node == NULL ) {
 611                 fatal_handler( "init_server_class(): NULL server_node for %s", remote_id );
 612                 return NULL;
 613         }
 614
 615
 616         if( ! j_connect( node->jabber ) ) {
 617                 fatal_handler( "Unable to init server class %s", node->server_class );
 618                 return NULL;
 619         }
 620
 621         info_handler( "Jabber address in init for %s : address %x : username %s : resource %s",
 622                         node->server_class, node->jabber->t_client->session->sock_obj->sock_fd,
 623                         node->jabber->username,  node->jabber->resource );
 624
 625         return node;
 626
 627 }
 628
 629 /* builds a new server_node to be added to the ring of server_nodes */
 630 server_node* init_server_node(  char* remote_id ) {
 631
 632         info_handler( "Initing server node for %s", remote_id );
 633         server_node* current_server_node;
 634         size_t size = sizeof( server_node);
 635         current_server_node = (server_node*) safe_malloc( size );
 636
 637         current_server_node->remote_id = strdup(remote_id);
 638         if( current_server_node->remote_id == NULL ) {
 639                 fatal_handler("init_server_class(): Out of Memory for %s", remote_id );
 640                 return NULL;
 641         }
 642
 643         current_server_node->reg_time = time(NULL);
 644         current_server_node->available = 1;
 645         current_server_node->next = current_server_node;
 646         current_server_node->prev = current_server_node;
 647
 648
 649         return current_server_node;
 650
 651 }
 652
 653 int  server_class_handle_msg( transport_router_registrar* router,
 654                 server_class_node* s_node, transport_message* msg ) {
 655
 656         if( s_node->current_server_node == NULL ) {
 657                 /* return error to client ??!*/
 658                 /* WE have no one to send the message to */
 659                 warning_handler( "We no longer have any servers for %s : "
 660                                 "no one to send the message to. Sending error message to %s", s_node->server_class, msg->sender );
 661                 free( msg->recipient );
 662
 663                 char* rec = strdup( msg->sender );
 664                 if( rec == NULL ) {
 665                         fatal_handler( "class msg_handler: out of memory");
 666                         return 0;
 667                 }
 668
 669                 info_handler( "Building error message to return for %s", s_node->server_class);
 670                 msg->recipient = rec;
 671                 set_msg_error(msg, "cancel", 501);
 672
 673                 client_send_message( s_node->jabber->t_client, msg );
 674                 message_free( msg );
 675
 676                 remove_server_class( router, s_node );
 677
 678                 return -1;
 679         }
 680
 681         info_handler( "[%s] Received \nfrom: %s \nto: %s",
 682                         s_node->server_class, msg->sender, msg->recipient );
 683
 684         if( msg->is_error ) {
 685                 warning_handler( "We've received an error message type: %s : code: %d",
 686                                 msg->error_type, msg->error_code );
 687
 688                 if( strcmp( msg->error_type, "cancel" ) == 0 ) {
 689                         warning_handler( "Looks like we've lost a server!" );
 690                         server_node* dead_node = find_server_node( s_node, msg->sender );
 691
 692                         if( dead_node != NULL ) {
 693                                 //message_free( msg );
 694                                 transport_message* tmp = dead_node->last_sent;
 695
 696                                 /* copy over last sent, it will be freed in the unregister function */
 697                                 transport_message* tmp2 = message_init( tmp->body, tmp->subject, tmp->thread,
 698                                                 tmp->recipient, tmp->sender );
 699
 700                                 message_set_router_info( tmp2, tmp->router_from,
 701                                                 tmp->router_to, tmp->router_class, tmp->router_command, tmp->broadcast );
 702
 703                                 if( ! unregister_server_node( s_node, dead_node->remote_id ) ) {
 704                                         /* WE have no one to send the message to */
 705                                         warning_handler( "We no longer have any servers for %s : "
 706                                                         "no one to send the message to.", s_node->server_class );
 707                                         free( msg->recipient );
 708
 709                                         char* rec = strdup( msg->router_from );
 710                                         if( rec == NULL ) {
 711                                                 fatal_handler( "class msg_handler: out of memory");
 712                                                 return 0;
 713                                         }
 714
 715                                         info_handler( "Building error message to return for %s", s_node->server_class);
 716                                         msg->recipient = rec;
 717                                         client_send_message( s_node->jabber->t_client, msg );
 718                                         message_free( tmp2 );
 719                                         message_free( msg );
 720                                         return 0;
 721
 722                                 } else {
 723                                         msg = tmp2;
 724                                 }
 725                         }
 726                 }
 727         }
 728
 729
 730         server_node* c_node = s_node->current_server_node->next;
 731
 732         /* not implemented yet */
 733         while( ! c_node->available ) {
 734                 if( c_node == s_node->current_server_node ) {
 735                         warning_handler("No server_node's are available for %s", s_node->server_class );
 736                         /* XXX send error message to client */
 737                         return 0;
 738                 }
 739                 c_node = c_node->next;
 740         }
 741         s_node->current_server_node = c_node;
 742
 743         transport_message * new_msg =
 744                 message_init(   msg->body, msg->subject, msg->thread,
 745                                 s_node->current_server_node->remote_id, msg->sender );
 746
 747         message_set_router_info( new_msg, msg->sender, NULL, NULL, NULL, 0 );
 748
 749         info_handler( "[%s] Routing message from [%s]\nto [%s]", s_node->server_class, msg->sender, new_msg->recipient );
 750         //info_handler( "New Message Details: sender:%s recipient: %s \nbody: %s",
 751         //              new_msg->sender, new_msg->recipient, new_msg->body );
 752
 753         message_free( s_node->current_server_node->last_sent );
 754         s_node->current_server_node->last_sent = msg;
 755
 756         if ( new_msg != NULL && client_send_message( s_node->jabber->t_client, new_msg ) ) {
 757                 s_node->current_server_node->serve_count++;
 758                 s_node->current_server_node->la_time = time(NULL);
 759                 message_free( new_msg ); // XXX
 760                 return 1;
 761         }
 762         message_free( new_msg ); // XXX
 763
 764         return 0;
 765 }
 766
 767
 768 int router_return_server_info(
 769                 transport_router_registrar* router, transport_message* msg ) {
 770
 771         server_class_node* cur_class = router->server_class_list;
 772         growing_buffer* buffer = buffer_init(1024);
 773
 774         while( cur_class != NULL ) {
 775
 776                 server_node* start_node = cur_class->current_server_node;
 777                 server_node* cur_node = start_node;
 778                 if( cur_node == NULL ) continue;
 779
 780                 do {
 781
 782                         char tbuf[124];
 783                         memset(tbuf,0,124);
 784                         sprintf( tbuf, "%d", (int)cur_node->reg_time );
 785                         buffer_add( buffer, tbuf );
 786                         buffer_add( buffer, " | ");
 787
 788                         memset(tbuf,0,124);
 789                         sprintf( tbuf, "%d", (int)cur_node->upd_time );
 790                         buffer_add( buffer, tbuf );
 791                         buffer_add( buffer, " | ");
 792
 793                         memset(tbuf,0,124);
 794                         sprintf( tbuf, "%d", (int)cur_node->la_time );
 795                         buffer_add( buffer, tbuf );
 796                         buffer_add( buffer, " | ");
 797
 798
 799                         char sbuf[64];
 800                         memset(sbuf,0,64);
 801                         sprintf(sbuf,"%d",cur_node->serve_count);
 802
 803                         buffer_add( buffer, "#" );
 804                         buffer_add( buffer, sbuf );
 805                         buffer_add( buffer, " | ");
 806
 807                         buffer_add( buffer, cur_class->server_class );
 808                         buffer_add( buffer, " | ");
 809
 810                         buffer_add( buffer, cur_node->remote_id );
 811
 812                         buffer_add( buffer, "\n" );
 813                         cur_node = cur_node->next;
 814
 815                 } while( cur_node != start_node );
 816
 817                 cur_class = cur_class->next;
 818
 819         }
 820
 821         info_handler( "Router returning servers query command: %s", buffer->buf );
 822
 823         transport_message* new_msg;
 824
 825         if( buffer->buf == NULL || strlen(buffer->buf) == 0 )
 826                 new_msg = message_init( "0", NULL, NULL, msg->sender, NULL );
 827         else
 828                 new_msg = message_init( buffer->buf, NULL, NULL, msg->sender, NULL );
 829
 830         client_send_message( router->jabber->t_client, new_msg );
 831         message_free( new_msg );
 832
 833         return 1;
 834
 835 }
 836
 837 int router_registrar_free( transport_router_registrar* router_registrar ) {
 838         if( router_registrar == NULL ) return 0;
 839         jabber_connect_free( router_registrar->jabber );
 840
 841         /* free the server_class list XXX */
 842         while( router_registrar->server_class_list != NULL ) {
 843                 remove_server_class(router_registrar, router_registrar->server_class_list);
 844         }
 845
 846         transport_router_registrar* router = router_registrar;
 847
 848         int i = 0;
 849
 850         while(1) {
 851
 852                 if( router->trusted_servers[i] == NULL &&
 853                                 router->trusted_clients[i] == NULL )
 854                         break;
 855
 856                 if(router->trusted_servers[i] != NULL)
 857                         free(router->trusted_servers[i]);
 858                 if(router->trusted_clients[i] != NULL)
 859                         free(router->trusted_clients[i]);
 860                 i++;
 861         }
 862
 863         free( router_registrar );
 864
 865
 866
 867         return 1;
 868 }
 869
 870
 871 int server_class_node_free( server_class_node* node ) {
 872         if( node == NULL ) { return 0; }
 873         if( node->server_class != NULL )
 874                 free( node->server_class );
 875
 876         jabber_connect_free( node->jabber );
 877
 878         /* just in case, free the list */
 879         while( node->current_server_node != NULL ) {
 880                 unregister_server_node( node, node->current_server_node->remote_id );
 881         }
 882         free( node );
 883         return 1;
 884 }
 885
 886 int server_node_free( server_node* node ) {
 887         if( node == NULL ) { return 0; }
 888         message_free( node->last_sent );
 889         free( node->remote_id );
 890         free( node );
 891         return 1;
 892 }
 893
 894 int jabber_connect_free( jabber_connect* jabber ) {
 895         if( jabber == NULL ) { return 0; }
 896         client_free( jabber->t_client );
 897         free( jabber->username );
 898         free( jabber->password );
 899         free( jabber->resource );
 900         free( jabber->server );
 901         free( jabber );
 902         return 1;
 903 }
 904
 905