OpenSRF/src/router/router.c

   1 #include "router.h"
   2 #include <sys/types.h>
   3 #include <signal.h>
   4
   5 #define ROUTER_MAX_MSGS_PER_PACKET 256
   6 char* router_resource;
   7 transport_router_registrar* routt;
   8 void _build_trusted_sites( transport_router_registrar* router );
   9
  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         config_reader_init( "opensrf.router", argv[1] );
  28         if( conf_reader == NULL ) fatal_handler( "main(): Config is NULL" );
  29
  30         /* laod the config options */
  31         char* server                    = config_value("opensrf.router", "//router/transport/server");
  32         char* port                              = config_value("opensrf.router", "//router/transport/port");
  33         char* unixpath                  = config_value("opensrf.router", "//router/transport/unixpath");
  34         char* username                  = config_value("opensrf.router", "//router/transport/username");
  35         char* password                  = config_value("opensrf.router", "//router/transport/password");
  36         router_resource         = config_value("opensrf.router", "//router/transport/resource");
  37         char* con_timeout               = config_value("opensrf.router", "//router/transport/connect_timeout" );
  38         char* max_retries               = config_value("opensrf.router", "//router/transport/max_reconnect_attempts" );
  39         char* component         = config_value("opensrf.router", "//router/component" );
  40
  41
  42         /* set up the logger */
  43         char* level = config_value("opensrf.router","//log/level");
  44         char* log_file = config_value("opensrf.router","//log/file");
  45         int llevel = atoi(level);
  46         fprintf(stderr, "Level %d; file %s\n", llevel, log_file );
  47
  48         if(!log_init( llevel, log_file ))
  49                 fprintf(stderr, "Unable to init logging, going to stderr...\n" );
  50
  51
  52         free(level);
  53         free(log_file);
  54
  55         fprintf(stderr, "Router connecting as \nserver: %s \nport: %s \nunixpath: %s\nuser:%s \nresource:%s\n",
  56                         server, port, unixpath, username, router_resource );
  57
  58         int iport = 0;
  59         if(port)        iport = atoi( port );
  60
  61         int con_itimeout        = atoi( con_timeout );
  62         int max_retries_        = atoi(max_retries);
  63         int icomponent = 0;
  64         if(component)
  65                 icomponent = atoi(component);
  66
  67         /* build the router_registrar */
  68         transport_router_registrar* router_registrar =
  69                 router_registrar_init( server, iport, unixpath, username, password, router_resource, 0, con_itimeout, icomponent );
  70
  71         routt = router_registrar;
  72
  73         free(server);
  74         free(port);
  75         free(unixpath);
  76         free(username);
  77         free(password);
  78         free(con_timeout);
  79         free(max_retries);
  80
  81         daemonize();
  82
  83         signal(SIGHUP,sig_hup_handler);
  84         signal(SIGINT,sig_hup_handler);
  85         signal(SIGTERM,sig_hup_handler);
  86
  87
  88         int counter = 0;
  89         /* wait for incoming... */
  90         while( ++counter <= max_retries_ ) {
  91
  92                 /* connect to jabber */
  93                 if( router_registrar_connect( router_registrar ) )  {
  94                         info_handler( "Connected..." );
  95                         fprintf(stderr, "- Connected -\n");
  96                         counter = 0;
  97                         listen_loop( router_registrar );
  98                 } else
  99                         fatal_handler( "Could not connect to Jabber Server" );
 100
 101                 /* this should never happen */
 102                 warning_handler( "Jabber server probably went away, attempting reconnect" );
 103
 104                 sleep(5);
 105         }
 106
 107
 108         router_registrar_free( router_registrar );
 109         config_reader_free();
 110         return 1;
 111
 112 }
 113
 114 transport_router_registrar* router_registrar_init( char* server,
 115                 int port, char* unixpath, char* username, char* password,
 116                 char* resource, int client_timeout, int con_timeout, int component ) {
 117
 118         if( server == NULL ) { return NULL; }
 119
 120         /* allocate a new router_registrar object */
 121         size_t size = sizeof( transport_router_registrar );
 122         transport_router_registrar* router_registrar = (transport_router_registrar*) safe_malloc( size );
 123
 124         router_registrar->client_timeout        = client_timeout;
 125         router_registrar->jabber = jabber_connect_init( server, port, unixpath, username, password, resource, con_timeout, component );
 126         _build_trusted_sites( router_registrar );
 127         info_handler( "Trusted stuff %s, %s, %s", router_registrar->trusted_servers[0],
 128                 router_registrar->trusted_clients[0], router_registrar->trusted_clients[1] );
 129         return router_registrar;
 130
 131 }
 132
 133 void _build_trusted_sites( transport_router_registrar* router ) {
 134
 135         router->trusted_servers = (char**) safe_malloc(sizeof(char**));
 136         router->trusted_clients = (char**) safe_malloc(sizeof(char**));
 137
 138         *(router->trusted_servers) = (char*) safe_malloc(ROUTER_MAX_TRUSTED);
 139         *(router->trusted_clients) = (char*) safe_malloc(ROUTER_MAX_TRUSTED);
 140
 141         int i = 0;
 142         while( ++i ) {
 143                 char* server = config_value("opensrf.router","//router/trusted_domains/server%d", i );
 144                 if(server == NULL)
 145                         break;
 146
 147                 router->trusted_servers[i-1] = server;
 148         }
 149
 150         i = 0;
 151         while( ++i ) {
 152                 char* client = config_value( "opensrf.router","//router/trusted_domains/client%d", i );
 153                 if(client == NULL)
 154                         break;
 155                 router->trusted_clients[i-1] = client;
 156         }
 157
 158         if( router->trusted_servers[0] == NULL ||
 159                         router->trusted_clients[0] == NULL )
 160
 161                 fatal_handler( "You must specify at least one trusted server and client in the config file");
 162 }
 163
 164
 165 jabber_connect* jabber_connect_init(
 166         char* server, int port, char* unixpath, char* username,
 167                 char* password, char* resource, int connect_timeout, int component ) {
 168
 169         size_t len = sizeof(jabber_connect);
 170         jabber_connect* jabber = (jabber_connect*) safe_malloc( len );
 171
 172         jabber->port                            = port;
 173         jabber->connect_timeout = connect_timeout;
 174         jabber->unixpath                        = strdup(unixpath);
 175
 176         jabber->server                          = strdup(server);
 177         jabber->username                        = strdup(username);
 178         jabber->password                        = strdup(password);
 179         jabber->resource                        = strdup(resource);
 180
 181         if( jabber->server == NULL || jabber->username == NULL ||
 182                         jabber->password == NULL || jabber->resource == NULL ) {
 183                 fatal_handler( "jabber_init(): Out of Memory" );
 184                 return NULL;
 185         }
 186
 187         /* build the transport client */
 188         jabber->t_client = client_init( jabber->server, jabber->port, unixpath, component );
 189
 190         return jabber;
 191 }
 192
 193 /* connect the router_registrar to jabber */
 194 int router_registrar_connect( transport_router_registrar* router ) {
 195         return j_connect( router->jabber );
 196 }
 197
 198 /* connect a jabber_connect object jabber */
 199 int j_connect( jabber_connect* jabber ) {
 200         if( jabber == NULL ) { return 0; }
 201         return client_connect( jabber->t_client,
 202                         jabber->username, jabber->password, jabber->resource,
 203                         jabber->connect_timeout, AUTH_DIGEST );
 204 }
 205
 206 int fill_fd_set( transport_router_registrar* router, fd_set* set ) {
 207
 208         int max_fd;
 209         FD_ZERO(set);
 210
 211         int router_fd = router->jabber->t_client->session->sock_id;
 212         max_fd = router_fd;
 213         FD_SET( router_fd, set );
 214
 215         server_class_node* cur_node = router->server_class_list;
 216         while( cur_node != NULL ) {
 217                 int cur_class_fd = cur_node->jabber->t_client->session->sock_id;
 218                 if( cur_class_fd > max_fd )
 219                         max_fd = cur_class_fd;
 220                 FD_SET( cur_class_fd, set );
 221                 cur_node = cur_node->next;
 222         }
 223
 224         FD_CLR( 0, set );
 225         return max_fd;
 226 }
 227
 228
 229 void listen_loop( transport_router_registrar* router ) {
 230
 231         if( router == NULL )
 232                 return;
 233
 234         int select_ret;
 235         int router_fd = router->jabber->t_client->session->sock_id;
 236         transport_message* cur_msg;
 237
 238         while(1) {
 239
 240                 fd_set listen_set;
 241                 int max_fd = fill_fd_set( router, &listen_set );
 242
 243                 if( max_fd < 1 )
 244                         fatal_handler( "fill_fd_set return bogus max_fd: %d", max_fd );
 245
 246                 int num_handled = 0;
 247                 info_handler( "Router going into select() wait..." );
 248
 249                 if( (select_ret=select(max_fd+ 1, &listen_set, NULL, NULL, NULL)) < 0 ) {
 250
 251                         warning_handler( "Select returned error %d", select_ret );
 252                         warning_handler( "Select Error %d on fd %d", errno );
 253                         perror( "Select Error" );
 254                         warning_handler( "Errors: EBADF %d, EINTR %d, EINVAL %d, ENOMEM %d",
 255                                         EBADF, EINTR, EINVAL, ENOMEM );
 256                         continue;
 257
 258                 } else {
 259
 260                         info_handler( "Select returned %d", select_ret );
 261
 262                         if( FD_ISSET( router_fd, &listen_set ) ) {
 263                                 cur_msg = client_recv( router->jabber->t_client, 1 );
 264
 265                                 /* We only process a message if we have some trusted servers and the current
 266                                         message came from one of those servers */
 267                                 if(cur_msg) {
 268
 269                                         if(router->trusted_servers && router->trusted_servers[0]) {
 270
 271                                                 int i = 0;
 272                                                 int found = 0;
 273
 274                                                 if( cur_msg->sender ) {
 275
 276                                                         int len = strlen(cur_msg->sender) + 1; /* there's no way it could be that big, but... */
 277                                                         char server_buf[len];
 278                                                         memset(server_buf,0,len);
 279                                                         jid_get_domain( cur_msg->sender, server_buf );
 280                                                         info_handler("Received top level message from %s", server_buf );
 281
 282                                                         while(1) {
 283                                                                 if(router->trusted_servers[i] == NULL)
 284                                                                         break;
 285                                                                 if(!strcmp(router->trusted_servers[i], server_buf)) {
 286                                                                         found = 1;
 287                                                                         break;
 288                                                                 }
 289                                                                 i++;
 290                                                         }
 291                                                 }
 292
 293                                                 if(found)
 294                                                         router_registrar_handle_msg( router, cur_msg );
 295                                                 else
 296                                                         warning_handler( "Received top level message from unpriveleged sender %s", cur_msg->sender );
 297                                         }
 298
 299                                         message_free( cur_msg );
 300                                 }
 301
 302                                 if( ++num_handled == select_ret )
 303                                         continue;
 304                         }
 305
 306                         /* cycle through the children and find any whose fd's are ready for reading */
 307                         server_class_node* cur_node = router->server_class_list;
 308                         while( cur_node != NULL ) {
 309                                 debug_handler( "Checking File Descriptor" );
 310                                 int cur_fd = cur_node->jabber->t_client->session->sock_id;
 311
 312                                 debug_handler("Router checking file descriptor %d", cur_fd);
 313
 314                                 if( FD_ISSET(cur_fd, &listen_set) ) {
 315                                         ++num_handled;
 316                                         FD_CLR(cur_fd,&listen_set);
 317
 318                                         debug_handler("Router has data on file descriptor %d", cur_fd);
 319                                         cur_msg = client_recv( cur_node->jabber->t_client, 1 );
 320
 321                                         if(cur_msg) {
 322
 323                                                 info_handler( "%s received from %s", cur_node->server_class, cur_msg->sender );
 324                                                 int handle_ret = server_class_handle_msg( router, cur_node, cur_msg );
 325
 326                                                 if( handle_ret == -1 ) {
 327                                                         warning_handler( "server_class_handle_msg() returned -1" );
 328                                                         cur_node = router->server_class_list; /*start over*/
 329                                                         continue;
 330
 331                                                 } else if( handle_ret == 0 ) {
 332                                                         /* delete and continue */
 333                                                         warning_handler( "server_class_handle_msg() returned 0" );
 334                                                         remove_server_class( router, cur_node );
 335                                                         debug_handler( "Removed Server Class" );
 336                                                         cur_node = router->server_class_list; /*start over*/
 337                                                         continue;
 338                                                 }
 339
 340                                                 info_handler( "%s handled message successfully", cur_node->server_class );
 341                                                 /* dont free message here */
 342                                                 if( num_handled == select_ret )
 343                                                         break;
 344                                         }
 345
 346                                 }
 347
 348                                 if( num_handled == select_ret )
 349                                         break;
 350
 351                                 cur_node = cur_node->next;
 352
 353                         } /* cycling through the server_class list */
 354
 355                 } /* no select errors */
 356         }
 357 }
 358
 359
 360 /* determine where to route top level messages */
 361 int router_registrar_handle_msg( transport_router_registrar* router_registrar, transport_message* msg ) {
 362
 363         info_handler( "Received class: %s : command %s ", msg->router_class, msg->router_command );
 364
 365         if( router_registrar == NULL || msg == NULL ) { return 0; }
 366
 367         if( msg->router_command == NULL || !strcmp(msg->router_command,"") ) {
 368                 return router_registrar_handle_app_request( router_registrar, msg );
 369         }
 370
 371         // user issued a ruoter query
 372         /* a query command has router_command="query" and the actual query type
 373                 is the content of the message */
 374         if( !strcmp(msg->router_command,"query")) {
 375                 info_handler( "Router received query command" );
 376
 377                 // user issues a servers query
 378                 if( !strcmp(msg->body, "servers")) {
 379
 380                         info_handler( "Router received servers query command" );
 381                         router_return_server_info( router_registrar, msg );
 382                         return 1;
 383                 }
 384         }
 385
 386
 387         info_handler("Looking for server_class_node %s...",msg->router_class);
 388         server_class_node* active_class_node = find_server_class( router_registrar, msg->router_class );
 389
 390         if( active_class_node == NULL ) {
 391                 info_handler("Could not find server_class_node %s, creating one.",msg->router_class);
 392
 393                 /* there is no server_class for msg->router_class so we build it here */
 394                 if( strcmp( msg->router_command, "register") == 0 ) {
 395
 396                         info_handler("Adding server_class_node for %s",msg->router_class);
 397                         active_class_node =
 398                                 init_server_class( router_registrar, msg->sender, msg->router_class );
 399
 400                         if( active_class_node == NULL ) {
 401                                 fatal_handler( "router_listen(): active_class_node == NULL for %s", msg->sender );
 402                                 return 0;
 403                         }
 404
 405                         if (router_registrar->server_class_list != NULL) {
 406                                 active_class_node->next = router_registrar->server_class_list;
 407                                 router_registrar->server_class_list->prev = active_class_node;
 408                         }
 409                         router_registrar->server_class_list = active_class_node;
 410
 411                         //spawn_server_class( (void*) active_class_node );
 412
 413                 } else {
 414                         warning_handler( "router_register_handler_msg(): Bad Command [%s] for class [%s]",
 415                                 msg->router_command, msg->router_class );
 416                 }
 417
 418         } else if( strcmp( msg->router_command, "register") == 0 ) {
 419                 /* there is a server_class for msg->router_class so we
 420                         need to either add a new server_node or update the existing one */
 421
 422
 423                 server_node* s_node = find_server_node( active_class_node, msg->sender );
 424
 425                 if( s_node != NULL ) {
 426                         s_node->available = 1;
 427                         s_node->upd_time = time(NULL);
 428                         info_handler( "Found matching registered server: %s. Updating.",
 429                                         s_node->remote_id );
 430                 } else {
 431                         s_node = init_server_node( msg->sender );
 432
 433                         info_handler( "Adding server_node for: %s.", s_node->remote_id );
 434
 435                         if (s_node == NULL ) {
 436                                 warning_handler( " Could not create new xerver_node for %s.",
 437                                         msg->sender );
 438                                 return 0;
 439                         }
 440
 441                         s_node->next = active_class_node->current_server_node->next;
 442                         s_node->prev = active_class_node->current_server_node;
 443
 444                         active_class_node->current_server_node->next->prev = s_node;
 445                         active_class_node->current_server_node->next = s_node;
 446                 }
 447
 448
 449         } else if( strcmp( msg->router_command, "unregister") == 0 ) {
 450
 451                 if( ! unregister_server_node( active_class_node, msg->sender ) ) {
 452                         remove_server_class( router_registrar, active_class_node );
 453                         debug_handler( "Removed server class after final unregister");
 454                 }
 455
 456         } else {
 457                 warning_handler( "router_register_handler_msg(): Bad Command [%s] for class [%s]",
 458                         msg->router_command, msg->router_class );
 459         }
 460
 461         return 1;
 462 }
 463
 464
 465 /* removes a server class node from the top level router_registrar */
 466 int unregister_server_node( server_class_node* active_class_node, char* remote_id ) {
 467
 468         server_node* d_node = find_server_node( active_class_node, remote_id );
 469
 470         if ( d_node != NULL ) {
 471
 472                 info_handler( "Removing server_node for: %s.", d_node->remote_id );
 473
 474                 if ( d_node->next == NULL ) {
 475                         warning_handler( "NEXT is NULL in ring [%s] -- "
 476                                 "THIS SHOULD NEVER HAPPEN",
 477                                 d_node->remote_id );
 478
 479                 }
 480
 481                 if ( d_node->prev == NULL ) {
 482                         warning_handler( "PREV is NULL in a ring [%s] -- "
 483                                 "THIS SHOULD NEVER HAPPEN",
 484                                 d_node->remote_id );
 485
 486                 }
 487
 488                 if ( d_node->next == d_node && d_node->prev == d_node) {
 489                         info_handler( "Last node, setting ring to NULL: %s.",
 490                                 d_node->remote_id );
 491
 492                         active_class_node->current_server_node = NULL;
 493
 494                         server_node_free( d_node );
 495                         return 0;
 496
 497                 } else {
 498                         info_handler( "Nodes remain, splicing: %s, %s",
 499                                 d_node->prev->remote_id,
 500                                 d_node->next->remote_id);
 501
 502                 info_handler( "d_node => %x, next => %x, prev => %x",
 503                                         d_node, d_node->next, d_node->prev );
 504
 505
 506                         d_node->prev->next = d_node->next;
 507                         d_node->next->prev = d_node->prev;
 508
 509                         info_handler( "prev => %x, prev->next => %x, prev->prev => %x",
 510                                 d_node->prev, d_node->prev->next, d_node->prev->prev );
 511
 512                         info_handler( "next => %x, next->next => %x, next->prev => %x",
 513                                 d_node->next, d_node->next->next, d_node->next->prev );
 514
 515                         if (active_class_node->current_server_node == d_node)
 516                                 active_class_node->current_server_node = d_node->next;
 517
 518
 519                         server_node_free( d_node );
 520                 }
 521         }
 522
 523         return 1;
 524 }
 525
 526 server_node * find_server_node ( server_class_node * class, const char * remote_id ) {
 527
 528         if ( class == NULL ) {
 529                 warning_handler(" find_server_node(): bad arg!");
 530                 return NULL;
 531         }
 532
 533         server_node * start_node = class->current_server_node;
 534         server_node * node = class->current_server_node;
 535
 536         do {
 537                 if (node == NULL)
 538                         return NULL;
 539
 540                 if ( strcmp(node->remote_id, remote_id) == 0 )
 541                         return node;
 542
 543                 node = node->next;
 544
 545         } while ( node != start_node );
 546
 547         return NULL;
 548 }
 549
 550 /* if we return -1, then we just deleted the server_class you were looking for
 551         if we return 0, then some other error has occured
 552         we return 1 otherwise */
 553 int remove_server_class( transport_router_registrar* router, server_class_node* class ) {
 554         if( class == NULL )
 555                 return 0;
 556
 557         transport_message * msg = NULL;
 558         while ( (msg = client_recv(class->jabber->t_client, 0)) != NULL ) {
 559                 debug_handler( "Looping on messages to dead class" );
 560                 if( server_class_handle_msg(router, class, msg) < 0 ) {
 561                   debug_handler( "This class was freed by a recursive call, exiting 'remove_server_class'");
 562                   //message_free(msg); - this will be freed by server_class_handle_msg
 563                   debug_handler( "Message Freed");
 564                   return -1;
 565                 }
 566                 message_free(msg);
 567         }
 568
 569
 570         free( class->server_class );
 571         class->server_class = NULL;
 572
 573         find_server_class( router, router_resource ); /* find deletes for us */
 574         debug_handler( "Successfuly called 'find_server_class' on class to delete" );
 575
 576         if( router->server_class_list == NULL )
 577                 return 0;
 578         return 1;
 579 }
 580
 581 server_class_node * find_server_class ( transport_router_registrar * router, const char * class_id ) {
 582
 583         if ( router == NULL ) {
 584                 warning_handler(" find_server_class(): bad arg!");
 585                 return NULL;
 586         }
 587
 588         info_handler( "Finding server class for %s", class_id );
 589         server_class_node * class = router->server_class_list;
 590         server_class_node * dead_class = NULL;
 591
 592         while ( class != NULL ) {
 593
 594                 if ( class->server_class == NULL ) {
 595                         info_handler( "Found an empty server class" );
 596
 597                         if ( class->prev != NULL ) {
 598                                 class->prev->next = class->next;
 599                                 if( class->next != NULL ) {
 600                                         class->next->prev = class->prev;
 601                                 }
 602
 603                         } else {
 604                                 info_handler( "Empty class is the first on the list" );
 605                                 if( class->next != NULL )
 606                                         router->server_class_list = class->next;
 607
 608                                 else { /* we're the last class node in the class node list */
 609                                         info_handler( "Empty class is the last on the list" );
 610                                         server_class_node_free( router->server_class_list );
 611                                         router->server_class_list = NULL;
 612                                         break;
 613                                 }
 614
 615                         }
 616
 617                         dead_class = class;
 618                         class = class->next;
 619
 620                         info_handler( "Tossing our dead class" );
 621                         server_class_node_free( dead_class );
 622
 623                         if ( class == NULL )
 624                                 return NULL;
 625                 }
 626
 627                 if ( strcmp(class->server_class, class_id) == 0 )
 628                         return class;
 629                 info_handler( "%s != %s", class->server_class, class_id );
 630
 631                 class = class->next;
 632         }
 633
 634         debug_handler( "Returning NULL from find_server_class()" );
 635         return NULL;
 636 }
 637
 638 /* builds a new server class and connects to the jabber server with the new resource */
 639 server_class_node* init_server_class(
 640                 transport_router_registrar* router, char* remote_id, char* server_class ) {
 641
 642         size_t len = sizeof( server_class_node );
 643         server_class_node* node = (server_class_node*) safe_malloc( len );
 644
 645         node->jabber = jabber_connect_init( router->jabber->server,
 646                         router->jabber->port, router->jabber->unixpath, router->jabber->username,
 647                         router->jabber->password, server_class, router->jabber->connect_timeout, router->component );
 648
 649
 650
 651         node->server_class = strdup( server_class );
 652         if( server_class == NULL ) {
 653                 fatal_handler( "imit_server_class(): out of memory for %s", server_class );
 654                 return NULL;
 655         }
 656
 657         info_handler( "Received class to init_server_class: %s", server_class );
 658         node->current_server_node = init_server_node( remote_id );
 659         if( node->current_server_node == NULL ) {
 660                 fatal_handler( "init_server_class(): NULL server_node for %s", remote_id );
 661                 return NULL;
 662         }
 663
 664
 665         if( ! j_connect( node->jabber ) ) {
 666                 fatal_handler( "Unable to init server class %s", node->server_class );
 667                 return NULL;
 668         }
 669
 670         info_handler( "Jabber address in init for %s : address %x : username %s : resource %s",
 671                         node->server_class, node->jabber->t_client->session->sock_id,
 672                         node->jabber->username,  node->jabber->resource );
 673
 674         return node;
 675
 676 }
 677
 678 /* builds a new server_node to be added to the ring of server_nodes */
 679 server_node* init_server_node(  char* remote_id ) {
 680
 681         info_handler( "Initing server node for %s", remote_id );
 682         server_node* current_server_node;
 683         size_t size = sizeof( server_node);
 684         current_server_node = (server_node*) safe_malloc( size );
 685
 686         current_server_node->remote_id = strdup(remote_id);
 687         if( current_server_node->remote_id == NULL ) {
 688                 fatal_handler("init_server_class(): Out of Memory for %s", remote_id );
 689                 return NULL;
 690         }
 691
 692         current_server_node->reg_time = time(NULL);
 693         current_server_node->available = 1;
 694         current_server_node->next = current_server_node;
 695         current_server_node->prev = current_server_node;
 696
 697
 698         return current_server_node;
 699
 700 }
 701
 702 int  server_class_handle_msg( transport_router_registrar* router,
 703                 server_class_node* s_node, transport_message* msg ) {
 704
 705         if( s_node->current_server_node == NULL ) {
 706                 /* return error to client ??!*/
 707                 /* WE have no one to send the message to */
 708                 warning_handler( "We no longer have any servers for %s : "
 709                                 "no one to send the message to. Sending error message to %s", s_node->server_class, msg->sender );
 710                 free( msg->recipient );
 711
 712                 char* rec = strdup( msg->sender );
 713                 if( rec == NULL ) {
 714                         fatal_handler( "class msg_handler: out of memory");
 715                         return 0;
 716                 }
 717
 718                 info_handler( "Building error message to return for %s", s_node->server_class);
 719                 msg->recipient = rec;
 720                 set_msg_error(msg, "cancel", 501);
 721
 722                 client_send_message( s_node->jabber->t_client, msg );
 723                 message_free( msg );
 724
 725                 remove_server_class( router, s_node );
 726                 debug_handler( "Successfully removed server class" );
 727
 728                 return -1;
 729         }
 730
 731         info_handler( "[%s] Received \nfrom: %s \nto: %s",
 732                         s_node->server_class, msg->sender, msg->recipient );
 733
 734         if( msg->is_error ) {
 735                 warning_handler( "We've received an error message type: %s : code: %d",
 736                                 msg->error_type, msg->error_code );
 737
 738                 if( strcmp( msg->error_type, "cancel" ) == 0 ) {
 739                         warning_handler( "Looks like we've lost a server!" );
 740                         server_node* dead_node = find_server_node( s_node, msg->sender );
 741
 742                         if( dead_node != NULL ) {
 743                                 //message_free( msg );
 744                                 transport_message* tmp = dead_node->last_sent;
 745
 746                                 /* copy over last sent, it will be freed in the unregister function */
 747                                 transport_message* tmp2 = message_init( tmp->body, tmp->subject, tmp->thread,
 748                                                 tmp->recipient, tmp->sender );
 749
 750                                 message_set_router_info( tmp2, tmp->router_from,
 751                                                 tmp->router_to, tmp->router_class, tmp->router_command, tmp->broadcast );
 752
 753                                 if( ! unregister_server_node( s_node, dead_node->remote_id ) ) {
 754                                         /* WE have no one to send the message to */
 755                                         warning_handler( "We no longer have any servers for %s : "
 756                                                         "no one to send the message to.", s_node->server_class );
 757                                         free( msg->recipient );
 758
 759                                         char* rec = strdup( msg->router_from );
 760                                         if( rec == NULL ) {
 761                                                 fatal_handler( "class msg_handler: out of memory");
 762                                                 return 0;
 763                                         }
 764
 765                                         info_handler( "Building error message to return for %s", s_node->server_class);
 766                                         msg->recipient = rec;
 767                                         client_send_message( s_node->jabber->t_client, msg );
 768                                         message_free( tmp2 );
 769                                         message_free( msg );
 770                                         return 0;
 771
 772                                 } else {
 773                                         msg = tmp2;
 774                                 }
 775                         }
 776                 }
 777         }
 778
 779
 780         server_node* c_node = s_node->current_server_node->next;
 781
 782         /* not implemented yet */
 783         while( ! c_node->available ) {
 784                 if( c_node == s_node->current_server_node ) {
 785                         warning_handler("No server_node's are available for %s", s_node->server_class );
 786                         /* XXX send error message to client */
 787                         return 0;
 788                 }
 789                 c_node = c_node->next;
 790         }
 791         s_node->current_server_node = c_node;
 792
 793         transport_message * new_msg =
 794                 message_init(   msg->body, msg->subject, msg->thread,
 795                                 s_node->current_server_node->remote_id, msg->sender );
 796
 797         message_set_router_info( new_msg, msg->sender, NULL, NULL, NULL, 0 );
 798
 799         info_handler( "[%s] Routing message from [%s]\nto [%s]", s_node->server_class, msg->sender, new_msg->recipient );
 800         //info_handler( "New Message Details: sender:%s recipient: %s \nbody: %s",
 801         //              new_msg->sender, new_msg->recipient, new_msg->body );
 802
 803         message_free( s_node->current_server_node->last_sent );
 804         s_node->current_server_node->last_sent = msg;
 805
 806         if ( new_msg != NULL && client_send_message( s_node->jabber->t_client, new_msg ) ) {
 807                 s_node->current_server_node->serve_count++;
 808                 s_node->current_server_node->la_time = time(NULL);
 809                 message_free( new_msg ); // XXX
 810                 return 1;
 811         }
 812         message_free( new_msg ); // XXX
 813
 814         return 0;
 815 }
 816
 817
 818 int router_return_server_info(
 819                 transport_router_registrar* router, transport_message* msg ) {
 820
 821         server_class_node* cur_class = router->server_class_list;
 822         growing_buffer* buffer = buffer_init(1024);
 823
 824         while( cur_class != NULL ) {
 825
 826                 server_node* start_node = cur_class->current_server_node;
 827                 server_node* cur_node = start_node;
 828                 if( cur_node == NULL ) continue;
 829
 830                 do {
 831
 832                         char tbuf[124];
 833                         memset(tbuf,0,124);
 834                         sprintf( tbuf, "%d", (int)cur_node->reg_time );
 835                         buffer_add( buffer, tbuf );
 836                         buffer_add( buffer, " | ");
 837
 838                         memset(tbuf,0,124);
 839                         sprintf( tbuf, "%d", (int)cur_node->upd_time );
 840                         buffer_add( buffer, tbuf );
 841                         buffer_add( buffer, " | ");
 842
 843                         memset(tbuf,0,124);
 844                         sprintf( tbuf, "%d", (int)cur_node->la_time );
 845                         buffer_add( buffer, tbuf );
 846                         buffer_add( buffer, " | ");
 847
 848
 849                         char sbuf[64];
 850                         memset(sbuf,0,64);
 851                         sprintf(sbuf,"%d",cur_node->serve_count);
 852
 853                         buffer_add( buffer, "#" );
 854                         buffer_add( buffer, sbuf );
 855                         buffer_add( buffer, " | ");
 856
 857                         buffer_add( buffer, cur_class->server_class );
 858                         buffer_add( buffer, " | ");
 859
 860                         buffer_add( buffer, cur_node->remote_id );
 861
 862                         buffer_add( buffer, "\n" );
 863                         cur_node = cur_node->next;
 864
 865                 } while( cur_node != start_node );
 866
 867                 cur_class = cur_class->next;
 868
 869         }
 870
 871         info_handler( "Router returning servers query command: %s", buffer->buf );
 872
 873         transport_message* new_msg;
 874
 875         if( buffer->buf == NULL || strlen(buffer->buf) == 0 )
 876                 new_msg = message_init( "0", NULL, NULL, msg->sender, NULL );
 877         else
 878                 new_msg = message_init( buffer->buf, NULL, NULL, msg->sender, NULL );
 879
 880         client_send_message( router->jabber->t_client, new_msg );
 881         message_free( new_msg );
 882
 883         return 1;
 884
 885 }
 886
 887 int router_registrar_handle_app_request(
 888                 transport_router_registrar* router, transport_message* msg ) {
 889
 890         osrf_message* arr[ROUTER_MAX_MSGS_PER_PACKET];
 891         memset(arr, 0, ROUTER_MAX_MSGS_PER_PACKET );
 892         //int num_msgs = osrf_message_from_xml( msg->body, arr );
 893         int num_msgs = osrf_message_deserialize( msg->body, arr, ROUTER_MAX_MSGS_PER_PACKET );
 894
 895         int i;
 896         for( i = 0; i != num_msgs; i++ ) {
 897
 898                 osrf_message* omsg = arr[i];
 899                 osrf_message* success = NULL;
 900                 osrf_message** result = NULL;
 901                 int num_responses;
 902
 903                 //char* newxml =  osrf_message_to_xml(omsg);
 904                 //debug_handler( "Received potential app request from client:\n%s\n", newxml );
 905                 //free(newxml);
 906
 907                 if(omsg->m_type == CONNECT) {
 908
 909                         success = osrf_message_init(
 910                                         STATUS, omsg->thread_trace, omsg->protocol );
 911
 912                         osrf_message_set_status_info(
 913                                         success, "oilsConnectStatus", "Connection Successful", OSRF_STATUS_OK );
 914
 915                 } else if( omsg->m_type == REQUEST ) {
 916
 917                         result = router_registrar_process_app_request( router, omsg, &num_responses );
 918
 919                 } else if(omsg->m_type == DISCONNECT) {
 920                         success = NULL;
 921
 922                 } else {
 923
 924                         success = osrf_message_init(
 925                                         STATUS, omsg->thread_trace, omsg->protocol );
 926                         osrf_message_set_status_info(
 927                                         success, "oilsMethodException", "Method Not Found", OSRF_STATUS_NOTFOUND );
 928                 }
 929
 930
 931                 /* now send our new message back */
 932                 if(success) {
 933
 934                         //char* xml =  osrf_message_to_xml(success);
 935                         char* xml       = osrf_message_serialize(success);
 936                         debug_handler( "Sending XML to client app request:\n%s\n", xml );
 937                         transport_message* return_m = message_init(
 938                                 xml, "", msg->thread, msg->sender, "" );
 939
 940
 941                         client_send_message(router->jabber->t_client, return_m);
 942
 943                         free(xml);
 944                         osrf_message_free(success);
 945                 } else if(result) {
 946                         int i;
 947
 948                         for(i=0; i!= num_responses; i++){
 949                                 //char* xml =  osrf_message_to_xml(result[i]);
 950                                 char* xml =  osrf_message_serialize(result[i]);
 951                                 debug_handler( "Sending XML to client app request:\n%s\n", xml );
 952                                 transport_message* return_m = message_init(
 953                                         xml, "", msg->thread, msg->sender, "" );
 954
 955
 956                                 client_send_message(router->jabber->t_client, return_m);
 957
 958                                 free(xml);
 959                                 osrf_message_free(result[i]);
 960                         }
 961
 962                         osrf_message* complete = osrf_message_init(
 963                                 STATUS, result[i-1]->thread_trace, result[i-1]->protocol );
 964                         osrf_message_set_status_info( complete,
 965                                         "oilsConnectStatus", "Request Complete", OSRF_STATUS_COMPLETE );
 966                         //char* complete_xml = osrf_message_to_xml(complete);
 967                         char* complete_xml = osrf_message_serialize(complete);
 968                         transport_message* complete_m = message_init(
 969                                         complete_xml, "", msg->thread, msg->sender, "" );
 970                         client_send_message(router->jabber->t_client, complete_m);
 971                         free(complete_xml);
 972                         osrf_message_free(complete);
 973                         free(result);
 974
 975                 }
 976
 977         }
 978
 979         return 1;
 980
 981 }
 982
 983
 984
 985
 986 osrf_message** router_registrar_process_app_request(
 987                 transport_router_registrar* router, osrf_message* omsg, int* num_responses ) {
 988
 989
 990         if( omsg->method_name == NULL )
 991                 return NULL;
 992
 993         osrf_message** result_array = NULL;
 994
 995
 996         debug_handler( "Received method from client: %s", omsg->method_name );
 997
 998         if(!strcmp(omsg->method_name,"opensrf.router.info.class.list")) {
 999
1000                 object* result_content = json_parse_string("[]");
1001
1002                 debug_handler("Processing opensrf.router.info.class.list request");
1003
1004                 server_class_node* cur_class = router->server_class_list;
1005                 while( cur_class != NULL ) {
1006
1007                         debug_handler("Adding %s to request list", cur_class->server_class);
1008
1009                         result_content->push(result_content, new_object(cur_class->server_class));
1010                         cur_class = cur_class->next;
1011                 }
1012                 result_array = safe_malloc(sizeof(osrf_message*));
1013                 *num_responses = 1;
1014
1015                 result_array[0] = osrf_message_init(
1016                         RESULT, omsg->thread_trace, omsg->protocol );
1017
1018                 osrf_message_set_result_content( result_array[0], object_to_json(result_content));
1019                 free_object(result_content);
1020
1021
1022         } else if(!strcmp(omsg->method_name,"opensrf.router.info.stats")) {
1023
1024                 /* we have a server_class array which holds an array of node_objects.
1025                         each node_object contains an array of stats
1026                         */
1027
1028                 debug_handler("Processing opensrf.router.info.stats request");
1029
1030                 object* result_content = json_parse_string("{}");
1031
1032                 server_class_node* cur_class = router->server_class_list;
1033
1034                 while( cur_class != NULL ) {
1035
1036                         server_node* start_node = cur_class->current_server_node;
1037                         server_node* cur_node = start_node;
1038                         if( cur_node == NULL ) continue;
1039
1040                         object* server_object = json_parse_string("{}");
1041
1042                         do {
1043
1044                                 object* node_stats_array = json_parse_string("[]");
1045
1046                                 object* json_reg_time = json_parse_string("{}");
1047
1048                                 object_add_key( json_reg_time, "reg_time",
1049                                         new_int_object((int) cur_node->reg_time));
1050
1051                                 object_push(  node_stats_array, json_reg_time );
1052
1053                                 object* json_upd_time = json_parse_string("{}");
1054
1055
1056                                 object_add_key( json_upd_time, "upd_time",
1057                                         new_int_object((int)cur_node->upd_time));
1058
1059
1060
1061                                 object_push( node_stats_array, json_upd_time );
1062
1063
1064
1065                                 object* json_la_time = json_parse_string("{}");
1066
1067
1068
1069                                 object_add_key( json_la_time, "la_time",
1070                                                 new_int_object((int)cur_node->la_time));
1071
1072
1073                                 object_push( node_stats_array, json_la_time );
1074
1075                                 object* json_serve_count = json_parse_string("{}");
1076
1077
1078                                 object_add_key( json_serve_count, "serve_count",
1079                                         new_int_object((int)cur_node->serve_count));
1080
1081
1082                                 object_push( node_stats_array, json_serve_count );
1083
1084
1085                                 object_add_key( server_object, cur_node->remote_id, node_stats_array );
1086
1087                                 cur_node = cur_node->next;
1088
1089                         } while( cur_node != start_node );
1090
1091                         object_add_key( result_content, cur_class->server_class, server_object );
1092
1093                         cur_class = cur_class->next;
1094
1095
1096                 }
1097
1098                 result_array = safe_malloc(sizeof(osrf_message*));
1099                 *num_responses = 1;
1100
1101                 result_array[0] = osrf_message_init(
1102                         RESULT, omsg->thread_trace, omsg->protocol );
1103
1104                 osrf_message_set_result_content(result_array[0], object_to_json(result_content));
1105
1106                 free_object(result_content);
1107
1108
1109         } else if(!strcmp(omsg->method_name,"opensrf.system.method.all")) {
1110
1111                 object* content = json_parse_string("{}");
1112                 object_add_key(content, "api_level", new_object("1"));
1113                 object_add_key(content, "api_name", new_object("opensrf.router.info.class.list"));
1114                 object_add_key(content, "server_class", new_object("router"));
1115                 object_add_key(content, "stream", new_object("0"));
1116
1117                 object* content2 = json_parse_string("{}");
1118                 object_add_key(content2, "api_level", new_object("1"));
1119                 object_add_key(content2, "api_name", new_object("opensrf.router.info.stats"));
1120                 object_add_key(content2, "server_class", new_object("router"));
1121                 object_add_key(content2, "stream", new_object("0"));
1122
1123                 object* content3 = json_parse_string("{}");
1124                 object_add_key(content3, "api_level", new_object("1"));
1125                 object_add_key(content3, "api_name", new_object("opensrf.system.method.all"));
1126                 object_add_key(content3, "server_class", new_object("router"));
1127                 object_add_key(content3, "stream", new_object("1"));
1128
1129                 result_array = safe_malloc(3*sizeof(osrf_message*));
1130                 *num_responses = 3;
1131
1132                 result_array[0] = osrf_message_init(
1133                         RESULT, omsg->thread_trace, omsg->protocol );
1134
1135                 osrf_message_set_result_content( result_array[0], object_to_json(content));
1136                 free_object(content);
1137
1138                 result_array[1] = osrf_message_init(
1139                         RESULT, omsg->thread_trace, omsg->protocol );
1140                 osrf_message_set_result_content( result_array[1], object_to_json(content2) );
1141                 free_object(content2);
1142
1143                 result_array[2] = osrf_message_init(
1144                         RESULT, omsg->thread_trace, omsg->protocol );
1145                 osrf_message_set_result_content( result_array[1], object_to_json(content3) );
1146                 free_object(content3);
1147
1148
1149         }
1150
1151
1152         if( result_array == NULL || result_array[0] == NULL )
1153                 return NULL;
1154
1155         return result_array;
1156 }
1157
1158
1159
1160
1161 int router_registrar_free( transport_router_registrar* router_registrar ) {
1162         if( router_registrar == NULL ) return 0;
1163         jabber_connect_free( router_registrar->jabber );
1164
1165         /* free the server_class list XXX */
1166         while( router_registrar->server_class_list != NULL ) {
1167                 remove_server_class(router_registrar, router_registrar->server_class_list);
1168                 debug_handler( "Removed server classes in registrar free");
1169         }
1170
1171         //transport_router_registrar* router = router_registrar;
1172
1173         /* make this better
1174         int i = 0;
1175         while(1) {
1176
1177                 if( router->trusted_servers[i] == NULL &&
1178                                 router->trusted_clients[i] == NULL )
1179                         break;
1180
1181                 if(router->trusted_servers[i] != NULL)
1182                         free(router->trusted_servers[i]);
1183                 if(router->trusted_clients[i] != NULL)
1184                         free(router->trusted_clients[i]);
1185                 i++;
1186         }
1187         */
1188
1189         free( router_registrar );
1190         return 1;
1191 }
1192
1193
1194 int server_class_node_free( server_class_node* node ) {
1195         if( node == NULL ) { return 0; }
1196         if( node->server_class != NULL )
1197                 free( node->server_class );
1198
1199         jabber_connect_free( node->jabber );
1200
1201         /* just in case, free the list */
1202         while( node->current_server_node != NULL ) {
1203                 unregister_server_node( node, node->current_server_node->remote_id );
1204         }
1205         free( node );
1206         return 1;
1207 }
1208
1209 int server_node_free( server_node* node ) {
1210         if( node == NULL ) { return 0; }
1211         message_free( node->last_sent );
1212         free( node->remote_id );
1213         free( node );
1214         return 1;
1215 }
1216
1217 int jabber_connect_free( jabber_connect* jabber ) {
1218         if( jabber == NULL ) { return 0; }
1219         client_free( jabber->t_client );
1220         free( jabber->unixpath );
1221         free( jabber->username );
1222         free( jabber->password );
1223         free( jabber->resource );
1224         free( jabber->server );
1225         free( jabber );
1226         return 1;
1227 }
1228
1229