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