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