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 12
   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* username                  = config_value("opensrf.router", "//router/transport/username");
  34         char* password                  = config_value("opensrf.router", "//router/transport/password");
  35         router_resource         = config_value("opensrf.router", "//router/transport/resource");
  36         char* con_timeout               = config_value("opensrf.router", "//router/transport/connect_timeout" );
  37         char* max_retries               = config_value("opensrf.router", "//router/transport/max_reconnect_attempts" );
  38         char* component         = config_value("opensrf.router", "//router/component" );
  39
  40
  41         /* set up the logger */
  42         char* level = config_value("opensrf.router","//log/level");
  43         char* log_file = config_value("opensrf.router","//log/file");
  44         int llevel = atoi(level);
  45         fprintf(stderr, "Level %d; file %s\n", llevel, log_file );
  46
  47         if(!log_init( llevel, log_file ))
  48                 fprintf(stderr, "Unable to init logging, going to stderr...\n" );
  49
  50
  51         free(level);
  52         free(log_file);
  53
  54         fprintf(stderr, "Router connecting as \nserver: %s \nport: %s \nuser:%s \nresource:%s\n",
  55                         server, port, username, router_resource );
  56
  57         int iport                       = atoi( port );
  58         int con_itimeout        = atoi( con_timeout );
  59         int max_retries_        = atoi(max_retries);
  60         int icomponent = 0;
  61         if(component)
  62                 icomponent = atoi(component);
  63
  64         if( iport < 1 ) {
  65                 fatal_handler( "Port is negative or 0" );
  66                 return 99;
  67         }
  68
  69
  70         /* build the router_registrar */
  71         transport_router_registrar* router_registrar =
  72                 router_registrar_init( server, iport, username, password, router_resource, 0, con_itimeout, icomponent );
  73
  74         routt = router_registrar;
  75
  76         free(server);
  77         free(port);
  78         free(username);
  79         free(password);
  80         free(con_timeout);
  81         free(max_retries);
  82
  83         signal(SIGHUP,sig_hup_handler);
  84
  85
  86         int counter = 0;
  87         /* wait for incoming... */
  88         while( ++counter <= max_retries_ ) {
  89
  90                 /* connect to jabber */
  91                 if( router_registrar_connect( router_registrar ) )  {
  92                         info_handler( "Connected..." );
  93                         fprintf(stderr, "- Connected -\n");
  94                         counter = 0;
  95                         listen_loop( router_registrar );
  96                 } else
  97                         fatal_handler( "Could not connect to Jabber Server" );
  98
  99                 /* this should never happen */
 100                 warning_handler( "Jabber server probably went away, attempting reconnect" );
 101
 102                 sleep(5);
 103         }
 104
 105
 106         router_registrar_free( router_registrar );
 107         config_reader_free();
 108         return 1;
 109
 110 }
 111
 112 transport_router_registrar* router_registrar_init( char* server,
 113                 int port, char* username, char* password,
 114                 char* resource, int client_timeout, int con_timeout, int component ) {
 115
 116         if( server == NULL ) { return NULL; }
 117
 118         /* allocate a new router_registrar object */
 119         size_t size = sizeof( transport_router_registrar );
 120         transport_router_registrar* router_registrar = (transport_router_registrar*) safe_malloc( size );
 121
 122         router_registrar->client_timeout        = client_timeout;
 123         router_registrar->jabber = jabber_connect_init( server, port, username, password, resource, con_timeout, component );
 124         _build_trusted_sites( router_registrar );
 125         info_handler( "Trusted stuff %s, %s, %s", router_registrar->trusted_servers[0],
 126                 router_registrar->trusted_clients[0], router_registrar->trusted_clients[1] );
 127         return router_registrar;
 128
 129 }
 130
 131 void _build_trusted_sites( transport_router_registrar* router ) {
 132
 133         router->trusted_servers = (char**) safe_malloc(sizeof(char**));
 134         router->trusted_clients = (char**) safe_malloc(sizeof(char**));
 135
 136         *(router->trusted_servers) = (char*) safe_malloc(ROUTER_MAX_TRUSTED);
 137         *(router->trusted_clients) = (char*) safe_malloc(ROUTER_MAX_TRUSTED);
 138
 139         int i = 0;
 140         while( ++i ) {
 141                 char* server = config_value("opensrf.router","//router/trusted_domains/server%d", i );
 142                 if(server == NULL)
 143                         break;
 144
 145                 router->trusted_servers[i-1] = server;
 146         }
 147
 148         i = 0;
 149         while( ++i ) {
 150                 char* client = config_value( "opensrf.router","//router/trusted_domains/client%d", i );
 151                 if(client == NULL)
 152                         break;
 153                 router->trusted_clients[i-1] = client;
 154         }
 155
 156         if( router->trusted_servers[0] == NULL ||
 157                         router->trusted_clients[0] == NULL )
 158
 159                 fatal_handler( "You must specify at least one trusted server and client in the config file");
 160 }
 161
 162
 163 jabber_connect* jabber_connect_init( char* server,
 164                 int port, char* username, char* password, char* resource, int connect_timeout, int component ) {
 165
 166         size_t len = sizeof(jabber_connect);
 167         jabber_connect* jabber = (jabber_connect*) safe_malloc( len );
 168
 169         jabber->port                            = port;
 170         jabber->connect_timeout = connect_timeout;
 171
 172         jabber->server                          = strdup(server);
 173         jabber->username                        = strdup(username);
 174         jabber->password                        = strdup(password);
 175         jabber->resource                        = strdup(resource);
 176
 177         if( jabber->server == NULL || jabber->username == NULL ||
 178                         jabber->password == NULL || jabber->resource == NULL ) {
 179                 fatal_handler( "jabber_init(): Out of Memory" );
 180                 return NULL;
 181         }
 182
 183         /* build the transport client */
 184         jabber->t_client = client_init( jabber->server, jabber->port, component );
 185
 186         return jabber;
 187 }
 188
 189 /* connect the router_registrar to jabber */
 190 int router_registrar_connect( transport_router_registrar* router ) {
 191         return j_connect( router->jabber );
 192 }
 193
 194 /* connect a jabber_connect object jabber */
 195 int j_connect( jabber_connect* jabber ) {
 196         if( jabber == NULL ) { return 0; }
 197         return client_connect( jabber->t_client,
 198                         jabber->username, jabber->password, jabber->resource,
 199                         jabber->connect_timeout, AUTH_DIGEST );
 200 }
 201
 202 int fill_fd_set( transport_router_registrar* router, fd_set* set ) {
 203
 204         int max_fd;
 205         FD_ZERO(set);
 206
 207         int router_fd = router->jabber->t_client->session->sock_obj->sock_fd;
 208         max_fd = router_fd;
 209         FD_SET( router_fd, set );
 210
 211         server_class_node* cur_node = router->server_class_list;
 212         while( cur_node != NULL ) {
 213                 int cur_class_fd = cur_node->jabber->t_client->session->sock_obj->sock_fd;
 214                 if( cur_class_fd > max_fd )
 215                         max_fd = cur_class_fd;
 216                 FD_SET( cur_class_fd, set );
 217                 cur_node = cur_node->next;
 218         }
 219
 220         FD_CLR( 0, set );
 221         return max_fd;
 222 }
 223
 224
 225 void listen_loop( transport_router_registrar* router ) {
 226
 227         if( router == NULL )
 228                 return;
 229
 230         int select_ret;
 231         int router_fd = router->jabber->t_client->session->sock_obj->sock_fd;
 232         transport_message* cur_msg;
 233
 234         while(1) {
 235
 236                 fd_set listen_set;
 237                 int max_fd = fill_fd_set( router, &listen_set );
 238
 239                 if( max_fd < 1 )
 240                         fatal_handler( "fill_fd_set return bogus max_fd: %d", max_fd );
 241
 242                 int num_handled = 0;
 243                 info_handler( "Going into select" );
 244
 245                 if( (select_ret=select(max_fd+ 1, &listen_set, NULL, NULL, NULL)) < 0 ) {
 246
 247                         warning_handler( "Select returned error %d", select_ret );
 248                         warning_handler( "Select Error %d on fd %d", errno );
 249                         perror( "Select Error" );
 250                         warning_handler( "Errors: EBADF %d, EINTR %d, EINVAL %d, ENOMEM %d",
 251                                         EBADF, EINTR, EINVAL, ENOMEM );
 252                         continue;
 253
 254                 } else {
 255
 256                         info_handler( "Select returned %d", select_ret );
 257
 258                         if( FD_ISSET( router_fd, &listen_set ) ) {
 259                                 cur_msg = client_recv( router->jabber->t_client, 1 );
 260
 261                                 /* We only process a message if we have some trusted servers and the current
 262                                         message came from one of those servers */
 263                                 if(cur_msg) {
 264
 265                                         if(router->trusted_servers && router->trusted_servers[0]) {
 266
 267                                                 int i = 0;
 268                                                 int found = 0;
 269
 270                                                 if( cur_msg->sender ) {
 271
 272                                                         int len = strlen(cur_msg->sender) + 1; /* there's no way it could be that big, but... */
 273                                                         char server_buf[len];
 274                                                         memset(server_buf,0,len);
 275                                                         jid_get_domain( cur_msg->sender, server_buf );
 276                                                         info_handler("Received top level message from %s", server_buf );
 277
 278                                                         while(1) {
 279                                                                 if(router->trusted_servers[i] == NULL)
 280                                                                         break;
 281                                                                 if(!strcmp(router->trusted_servers[i], server_buf)) {
 282                                                                         found = 1;
 283                                                                         break;
 284                                                                 }
 285                                                                 i++;
 286                                                         }
 287                                                 }
 288
 289                                                 if(found)
 290                                                         router_registrar_handle_msg( router, cur_msg );
 291                                                 else
 292                                                         warning_handler( "Received top level message from unpriveleged sender %s", cur_msg->sender );
 293                                         }
 294
 295                                         message_free( cur_msg );
 296                                 }
 297
 298                                 if( ++num_handled == select_ret )
 299                                         continue;
 300                         }
 301
 302                         /* cycle through the children and find any whose fd's are ready for reading */
 303                         server_class_node* cur_node = router->server_class_list;
 304                         while( cur_node != NULL ) {
 305                                 debug_handler( "Checking File Descriptor" );
 306                                 int cur_fd = cur_node->jabber->t_client->session->sock_obj->sock_fd;
 307
 308                                 if( FD_ISSET(cur_fd, &listen_set) ) {
 309                                         ++num_handled;
 310                                         FD_CLR(cur_fd,&listen_set);
 311
 312                                         cur_msg = client_recv( cur_node->jabber->t_client, 1 );
 313
 314                                         if(cur_msg) {
 315
 316                                                 info_handler( "%s received from %s", cur_node->server_class, cur_msg->sender );
 317                                                 int handle_ret = server_class_handle_msg( router, cur_node, cur_msg );
 318
 319                                                 if( handle_ret == -1 ) {
 320                                                         warning_handler( "server_class_handle_msg() returned -1" );
 321                                                         cur_node = router->server_class_list; /*start over*/
 322                                                         continue;
 323
 324                                                 } else if( handle_ret == 0 ) {
 325                                                         /* delete and continue */
 326                                                         warning_handler( "server_class_handle_msg() returned 0" );
 327                                                         //server_class_node* tmp_node = cur_node->next;
 328                                                         remove_server_class( router, cur_node );
 329                                                         debug_handler( "Removed Server Class" );
 330                                                         cur_node = router->server_class_list; /*start over*/
 331                                                         //cur_node = tmp_node;
 332                                                         continue;
 333                                                 }
 334
 335                                                 info_handler( "%s handled message successfully", cur_node->server_class );
 336                                                 /* dont free message here */
 337                                                 if( num_handled == select_ret )
 338                                                         break;
 339                                         }
 340
 341                                 }
 342
 343                                 if( num_handled == select_ret )
 344                                         break;
 345
 346                                 cur_node = cur_node->next;
 347
 348                         } /* cycling through the server_class list */
 349
 350                 } /* no select errors */
 351         }
 352 }
 353
 354
 355 /* determine where to route top level messages */
 356 int router_registrar_handle_msg( transport_router_registrar* router_registrar, transport_message* msg ) {
 357
 358         info_handler( "Received class: %s : command %s ", msg->router_class, msg->router_command );
 359
 360         if( router_registrar == NULL || msg == NULL ) { return 0; }
 361
 362         if( msg->router_command == NULL || !strcmp(msg->router_command,"") ) {
 363                 return router_registrar_handle_app_request( router_registrar, msg );
 364         }
 365
 366         // user issued a ruoter query
 367         /* a query command has router_command="query" and the actual query type
 368                 is the content of the message */
 369         if( !strcmp(msg->router_command,"query")) {
 370                 info_handler( "Router received query command" );
 371
 372                 // user issues a servers query
 373                 if( !strcmp(msg->body, "servers")) {
 374
 375                         info_handler( "Router received servers query command" );
 376                         router_return_server_info( router_registrar, msg );
 377                         return 1;
 378                 }
 379         }
 380
 381
 382         info_handler("Looking for server_class_node %s...",msg->router_class);
 383         server_class_node* active_class_node = find_server_class( router_registrar, msg->router_class );
 384
 385         if( active_class_node == NULL ) {
 386                 info_handler("Could not find server_class_node %s, creating one.",msg->router_class);
 387
 388                 /* there is no server_class for msg->router_class so we build it here */
 389                 if( strcmp( msg->router_command, "register") == 0 ) {
 390
 391                         info_handler("Adding server_class_node for %s",msg->router_class);
 392                         active_class_node =
 393                                 init_server_class( router_registrar, msg->sender, msg->router_class );
 394
 395                         if( active_class_node == NULL ) {
 396                                 fatal_handler( "router_listen(): active_class_node == NULL for %s", msg->sender );
 397                                 return 0;
 398                         }
 399
 400                         if (router_registrar->server_class_list != NULL) {
 401                                 active_class_node->next = router_registrar->server_class_list;
 402                                 router_registrar->server_class_list->prev = active_class_node;
 403                         }
 404                         router_registrar->server_class_list = active_class_node;
 405
 406                         //spawn_server_class( (void*) active_class_node );
 407
 408                 } else {
 409                         warning_handler( "router_register_handler_msg(): Bad Command [%s] for class [%s]",
 410                                 msg->router_command, msg->router_class );
 411                 }
 412
 413         } else if( strcmp( msg->router_command, "register") == 0 ) {
 414                 /* there is a server_class for msg->router_class so we
 415                         need to either add a new server_node or update the existing one */
 416
 417
 418                 server_node* s_node = find_server_node( active_class_node, msg->sender );
 419
 420                 if( s_node != NULL ) {
 421                         s_node->available = 1;
 422                         s_node->upd_time = time(NULL);
 423                         info_handler( "Found matching registered server: %s. Updating.",
 424                                         s_node->remote_id );
 425                 } else {
 426                         s_node = init_server_node( msg->sender );
 427
 428                         info_handler( "Adding server_node for: %s.", s_node->remote_id );
 429
 430                         if (s_node == NULL ) {
 431                                 warning_handler( " Could not create new xerver_node for %s.",
 432                                         msg->sender );
 433                                 return 0;
 434                         }
 435
 436                         s_node->next = active_class_node->current_server_node->next;
 437                         s_node->prev = active_class_node->current_server_node;
 438
 439                         active_class_node->current_server_node->next->prev = s_node;
 440                         active_class_node->current_server_node->next = s_node;
 441                 }
 442
 443
 444         } else if( strcmp( msg->router_command, "unregister") == 0 ) {
 445
 446                 if( ! unregister_server_node( active_class_node, msg->sender ) ) {
 447                         remove_server_class( router_registrar, active_class_node );
 448                         debug_handler( "Removed server class after final unregister");
 449                 }
 450
 451         } else {
 452                 warning_handler( "router_register_handler_msg(): Bad Command [%s] for class [%s]",
 453                         msg->router_command, msg->router_class );
 454         }
 455
 456         return 1;
 457 }
 458
 459
 460 /* removes a server class node from the top level router_registrar */
 461 int unregister_server_node( server_class_node* active_class_node, char* remote_id ) {
 462
 463         server_node* d_node = find_server_node( active_class_node, remote_id );
 464
 465         if ( d_node != NULL ) {
 466
 467                 info_handler( "Removing server_node for: %s.", d_node->remote_id );
 468
 469                 if ( d_node->next == NULL ) {
 470                         warning_handler( "NEXT is NULL in ring [%s] -- "
 471                                 "THIS SHOULD NEVER HAPPEN",
 472                                 d_node->remote_id );
 473
 474                 }
 475
 476                 if ( d_node->prev == NULL ) {
 477                         warning_handler( "PREV is NULL in a ring [%s] -- "
 478                                 "THIS SHOULD NEVER HAPPEN",
 479                                 d_node->remote_id );
 480
 481                 }
 482
 483                 if ( d_node->next == d_node && d_node->prev == d_node) {
 484                         info_handler( "Last node, setting ring to NULL: %s.",
 485                                 d_node->remote_id );
 486
 487                         active_class_node->current_server_node = NULL;
 488
 489                         server_node_free( d_node );
 490                         return 0;
 491
 492                 } else {
 493                         info_handler( "Nodes remain, splicing: %s, %s",
 494                                 d_node->prev->remote_id,
 495                                 d_node->next->remote_id);
 496
 497                 info_handler( "d_node => %x, next => %x, prev => %x",
 498                                         d_node, d_node->next, d_node->prev );
 499
 500
 501                         d_node->prev->next = d_node->next;
 502                         d_node->next->prev = d_node->prev;
 503
 504                         info_handler( "prev => %x, prev->next => %x, prev->prev => %x",
 505                                 d_node->prev, d_node->prev->next, d_node->prev->prev );
 506
 507                         info_handler( "next => %x, next->next => %x, next->prev => %x",
 508                                 d_node->next, d_node->next->next, d_node->next->prev );
 509
 510                         if (active_class_node->current_server_node == d_node)
 511                                 active_class_node->current_server_node = d_node->next;
 512
 513
 514                         server_node_free( d_node );
 515                 }
 516         }
 517
 518         return 1;
 519 }
 520
 521 server_node * find_server_node ( server_class_node * class, const char * remote_id ) {
 522
 523         if ( class == NULL ) {
 524                 warning_handler(" find_server_node(): bad arg!");
 525                 return NULL;
 526         }
 527
 528         server_node * start_node = class->current_server_node;
 529         server_node * node = class->current_server_node;
 530
 531         do {
 532                 if (node == NULL)
 533                         return NULL;
 534
 535                 if ( strcmp(node->remote_id, remote_id) == 0 )
 536                         return node;
 537
 538                 node = node->next;
 539
 540         } while ( node != start_node );
 541
 542         return NULL;
 543 }
 544
 545 /* if we return -1, then we just deleted the server_class you were looking for
 546         if we return 0, then some other error has occured
 547         we return 1 otherwise */
 548 int remove_server_class( transport_router_registrar* router, server_class_node* class ) {
 549         if( class == NULL )
 550                 return 0;
 551
 552         transport_message * msg = NULL;
 553         while ( (msg = client_recv(class->jabber->t_client, 0)) != NULL ) {
 554                 debug_handler( "Looping on messages to dead class" );
 555                 if( server_class_handle_msg(router, class, msg) < 0 ) {
 556                   debug_handler( "This class was freed by a recursive call, exiting 'remove_server_class'");
 557                   //message_free(msg); - this will be freed by server_class_handle_msg
 558                   debug_handler( "Message Freed");
 559                   return -1;
 560                 }
 561                 message_free(msg);
 562         }
 563
 564
 565         free( class->server_class );
 566         class->server_class = NULL;
 567
 568         find_server_class( router, router_resource ); /* find deletes for us */
 569         debug_handler( "Successfuly called 'find_server_class' on class to delete" );
 570
 571         if( router->server_class_list == NULL )
 572                 return 0;
 573         return 1;
 574 }
 575
 576 server_class_node * find_server_class ( transport_router_registrar * router, const char * class_id ) {
 577
 578         if ( router == NULL ) {
 579                 warning_handler(" find_server_class(): bad arg!");
 580                 return NULL;
 581         }
 582
 583         info_handler( "Finding server class for %s", class_id );
 584         server_class_node * class = router->server_class_list;
 585         server_class_node * dead_class = NULL;
 586
 587         while ( class != NULL ) {
 588
 589                 if ( class->server_class == NULL ) {
 590                         info_handler( "Found an empty server class" );
 591
 592                         if ( class->prev != NULL ) {
 593                                 class->prev->next = class->next;
 594                                 if( class->next != NULL ) {
 595                                         class->next->prev = class->prev;
 596                                 }
 597
 598                         } else {
 599                                 info_handler( "Empty class is the first on the list" );
 600                                 if( class->next != NULL )
 601                                         router->server_class_list = class->next;
 602
 603                                 else { /* we're the last class node in the class node list */
 604                                         info_handler( "Empty class is the last on the list" );
 605                                         server_class_node_free( router->server_class_list );
 606                                         router->server_class_list = NULL;
 607                                         break;
 608                                 }
 609
 610                         }
 611
 612                         dead_class = class;
 613                         class = class->next;
 614
 615                         info_handler( "Tossing our dead class" );
 616                         server_class_node_free( dead_class );
 617
 618                         if ( class == NULL )
 619                                 return NULL;
 620                 }
 621
 622                 if ( strcmp(class->server_class, class_id) == 0 )
 623                         return class;
 624                 info_handler( "%s != %s", class->server_class, class_id );
 625
 626                 class = class->next;
 627         }
 628
 629         debug_handler( "Returning NULL from find_server_class()" );
 630         return NULL;
 631 }
 632
 633 /* builds a new server class and connects to the jabber server with the new resource */
 634 server_class_node* init_server_class(
 635                 transport_router_registrar* router, char* remote_id, char* server_class ) {
 636
 637         size_t len = sizeof( server_class_node );
 638         server_class_node* node = (server_class_node*) safe_malloc( len );
 639
 640         node->jabber = jabber_connect_init( router->jabber->server,
 641                         router->jabber->port, router->jabber->username,
 642                         router->jabber->password, server_class, router->jabber->connect_timeout, router->component );
 643
 644
 645
 646         node->server_class = strdup( server_class );
 647         if( server_class == NULL ) {
 648                 fatal_handler( "imit_server_class(): out of memory for %s", server_class );
 649                 return NULL;
 650         }
 651
 652         info_handler( "Received class to init_server_class: %s", server_class );
 653         node->current_server_node = init_server_node( remote_id );
 654         if( node->current_server_node == NULL ) {
 655                 fatal_handler( "init_server_class(): NULL server_node for %s", remote_id );
 656                 return NULL;
 657         }
 658
 659
 660         if( ! j_connect( node->jabber ) ) {
 661                 fatal_handler( "Unable to init server class %s", node->server_class );
 662                 return NULL;
 663         }
 664
 665         info_handler( "Jabber address in init for %s : address %x : username %s : resource %s",
 666                         node->server_class, node->jabber->t_client->session->sock_obj->sock_fd,
 667                         node->jabber->username,  node->jabber->resource );
 668
 669         return node;
 670
 671 }
 672
 673 /* builds a new server_node to be added to the ring of server_nodes */
 674 server_node* init_server_node(  char* remote_id ) {
 675
 676         info_handler( "Initing server node for %s", remote_id );
 677         server_node* current_server_node;
 678         size_t size = sizeof( server_node);
 679         current_server_node = (server_node*) safe_malloc( size );
 680
 681         current_server_node->remote_id = strdup(remote_id);
 682         if( current_server_node->remote_id == NULL ) {
 683                 fatal_handler("init_server_class(): Out of Memory for %s", remote_id );
 684                 return NULL;
 685         }
 686
 687         current_server_node->reg_time = time(NULL);
 688         current_server_node->available = 1;
 689         current_server_node->next = current_server_node;
 690         current_server_node->prev = current_server_node;
 691
 692
 693         return current_server_node;
 694
 695 }
 696
 697 int  server_class_handle_msg( transport_router_registrar* router,
 698                 server_class_node* s_node, transport_message* msg ) {
 699
 700         if( s_node->current_server_node == NULL ) {
 701                 /* return error to client ??!*/
 702                 /* WE have no one to send the message to */
 703                 warning_handler( "We no longer have any servers for %s : "
 704                                 "no one to send the message to. Sending error message to %s", s_node->server_class, msg->sender );
 705                 free( msg->recipient );
 706
 707                 char* rec = strdup( msg->sender );
 708                 if( rec == NULL ) {
 709                         fatal_handler( "class msg_handler: out of memory");
 710                         return 0;
 711                 }
 712
 713                 info_handler( "Building error message to return for %s", s_node->server_class);
 714                 msg->recipient = rec;
 715                 set_msg_error(msg, "cancel", 501);
 716
 717                 client_send_message( s_node->jabber->t_client, msg );
 718                 message_free( msg );
 719
 720                 remove_server_class( router, s_node );
 721                 debug_handler( "Successfully removed server class" );
 722
 723                 return -1;
 724         }
 725
 726         info_handler( "[%s] Received \nfrom: %s \nto: %s",
 727                         s_node->server_class, msg->sender, msg->recipient );
 728
 729         if( msg->is_error ) {
 730                 warning_handler( "We've received an error message type: %s : code: %d",
 731                                 msg->error_type, msg->error_code );
 732
 733                 if( strcmp( msg->error_type, "cancel" ) == 0 ) {
 734                         warning_handler( "Looks like we've lost a server!" );
 735                         server_node* dead_node = find_server_node( s_node, msg->sender );
 736
 737                         if( dead_node != NULL ) {
 738                                 //message_free( msg );
 739                                 transport_message* tmp = dead_node->last_sent;
 740
 741                                 /* copy over last sent, it will be freed in the unregister function */
 742                                 transport_message* tmp2 = message_init( tmp->body, tmp->subject, tmp->thread,
 743                                                 tmp->recipient, tmp->sender );
 744
 745                                 message_set_router_info( tmp2, tmp->router_from,
 746                                                 tmp->router_to, tmp->router_class, tmp->router_command, tmp->broadcast );
 747
 748                                 if( ! unregister_server_node( s_node, dead_node->remote_id ) ) {
 749                                         /* WE have no one to send the message to */
 750                                         warning_handler( "We no longer have any servers for %s : "
 751                                                         "no one to send the message to.", s_node->server_class );
 752                                         free( msg->recipient );
 753
 754                                         char* rec = strdup( msg->router_from );
 755                                         if( rec == NULL ) {
 756                                                 fatal_handler( "class msg_handler: out of memory");
 757                                                 return 0;
 758                                         }
 759
 760                                         info_handler( "Building error message to return for %s", s_node->server_class);
 761                                         msg->recipient = rec;
 762                                         client_send_message( s_node->jabber->t_client, msg );
 763                                         message_free( tmp2 );
 764                                         message_free( msg );
 765                                         return 0;
 766
 767                                 } else {
 768                                         msg = tmp2;
 769                                 }
 770                         }
 771                 }
 772         }
 773
 774
 775         server_node* c_node = s_node->current_server_node->next;
 776
 777         /* not implemented yet */
 778         while( ! c_node->available ) {
 779                 if( c_node == s_node->current_server_node ) {
 780                         warning_handler("No server_node's are available for %s", s_node->server_class );
 781                         /* XXX send error message to client */
 782                         return 0;
 783                 }
 784                 c_node = c_node->next;
 785         }
 786         s_node->current_server_node = c_node;
 787
 788         transport_message * new_msg =
 789                 message_init(   msg->body, msg->subject, msg->thread,
 790                                 s_node->current_server_node->remote_id, msg->sender );
 791
 792         message_set_router_info( new_msg, msg->sender, NULL, NULL, NULL, 0 );
 793
 794         info_handler( "[%s] Routing message from [%s]\nto [%s]", s_node->server_class, msg->sender, new_msg->recipient );
 795         //info_handler( "New Message Details: sender:%s recipient: %s \nbody: %s",
 796         //              new_msg->sender, new_msg->recipient, new_msg->body );
 797
 798         message_free( s_node->current_server_node->last_sent );
 799         s_node->current_server_node->last_sent = msg;
 800
 801         if ( new_msg != NULL && client_send_message( s_node->jabber->t_client, new_msg ) ) {
 802                 s_node->current_server_node->serve_count++;
 803                 s_node->current_server_node->la_time = time(NULL);
 804                 message_free( new_msg ); // XXX
 805                 return 1;
 806         }
 807         message_free( new_msg ); // XXX
 808
 809         return 0;
 810 }
 811
 812
 813 int router_return_server_info(
 814                 transport_router_registrar* router, transport_message* msg ) {
 815
 816         server_class_node* cur_class = router->server_class_list;
 817         growing_buffer* buffer = buffer_init(1024);
 818
 819         while( cur_class != NULL ) {
 820
 821                 server_node* start_node = cur_class->current_server_node;
 822                 server_node* cur_node = start_node;
 823                 if( cur_node == NULL ) continue;
 824
 825                 do {
 826
 827                         char tbuf[124];
 828                         memset(tbuf,0,124);
 829                         sprintf( tbuf, "%d", (int)cur_node->reg_time );
 830                         buffer_add( buffer, tbuf );
 831                         buffer_add( buffer, " | ");
 832
 833                         memset(tbuf,0,124);
 834                         sprintf( tbuf, "%d", (int)cur_node->upd_time );
 835                         buffer_add( buffer, tbuf );
 836                         buffer_add( buffer, " | ");
 837
 838                         memset(tbuf,0,124);
 839                         sprintf( tbuf, "%d", (int)cur_node->la_time );
 840                         buffer_add( buffer, tbuf );
 841                         buffer_add( buffer, " | ");
 842
 843
 844                         char sbuf[64];
 845                         memset(sbuf,0,64);
 846                         sprintf(sbuf,"%d",cur_node->serve_count);
 847
 848                         buffer_add( buffer, "#" );
 849                         buffer_add( buffer, sbuf );
 850                         buffer_add( buffer, " | ");
 851
 852                         buffer_add( buffer, cur_class->server_class );
 853                         buffer_add( buffer, " | ");
 854
 855                         buffer_add( buffer, cur_node->remote_id );
 856
 857                         buffer_add( buffer, "\n" );
 858                         cur_node = cur_node->next;
 859
 860                 } while( cur_node != start_node );
 861
 862                 cur_class = cur_class->next;
 863
 864         }
 865
 866         info_handler( "Router returning servers query command: %s", buffer->buf );
 867
 868         transport_message* new_msg;
 869
 870         if( buffer->buf == NULL || strlen(buffer->buf) == 0 )
 871                 new_msg = message_init( "0", NULL, NULL, msg->sender, NULL );
 872         else
 873                 new_msg = message_init( buffer->buf, NULL, NULL, msg->sender, NULL );
 874
 875         client_send_message( router->jabber->t_client, new_msg );
 876         message_free( new_msg );
 877
 878         return 1;
 879
 880 }
 881
 882 int router_registrar_handle_app_request(
 883                 transport_router_registrar* router, transport_message* msg ) {
 884
 885         osrf_message* arr[ROUTER_MAX_MSGS_PER_PACKET];
 886         memset(arr, 0, ROUTER_MAX_MSGS_PER_PACKET );
 887         int num_msgs = osrf_message_from_xml( msg->body, arr );
 888
 889         int i;
 890         for( i = 0; i != num_msgs; i++ ) {
 891
 892                 osrf_message* omsg = arr[i];
 893                 osrf_message* success = NULL;
 894                 osrf_message** result = NULL;
 895                 int num_responses;
 896
 897                 char* newxml =  osrf_message_to_xml(omsg);
 898                 debug_handler( "Received potential app request from client:\n%s\n", newxml );
 899                 free(newxml);
 900
 901                 if(omsg->m_type == CONNECT) {
 902
 903                         success = osrf_message_init(
 904                                         STATUS, omsg->thread_trace, omsg->protocol );
 905
 906                         osrf_message_set_status_info(
 907                                         success, "oilsConnectStatus", "Connection Successful", OSRF_STATUS_OK );
 908
 909                 } else if( omsg->m_type == REQUEST ) {
 910
 911                         result = router_registrar_process_app_request( router, omsg, &num_responses );
 912
 913                 } else if(omsg->m_type == DISCONNECT) {
 914                         success = NULL;
 915
 916                 } else {
 917
 918                         success = osrf_message_init(
 919                                         STATUS, omsg->thread_trace, omsg->protocol );
 920                         osrf_message_set_status_info(
 921                                         success, "oilsMethodException", "Method Not Found", OSRF_STATUS_NOTFOUND );
 922                 }
 923
 924
 925                 /* now send our new message back */
 926                 if(success) {
 927
 928                         char* xml =  osrf_message_to_xml(success);
 929                         debug_handler( "Sending XML to client app request:\n%s\n", xml );
 930                         transport_message* return_m = message_init(
 931                                 xml, "", msg->thread, msg->sender, "" );
 932
 933
 934                         client_send_message(router->jabber->t_client, return_m);
 935
 936                         free(xml);
 937                         osrf_message_free(success);
 938                 } else if(result) {
 939                         int i;
 940
 941                         for(i=0; i!= num_responses; i++){
 942                                 char* xml =  osrf_message_to_xml(result[i]);
 943                                 debug_handler( "Sending XML to client app request:\n%s\n", xml );
 944                                 transport_message* return_m = message_init(
 945                                         xml, "", msg->thread, msg->sender, "" );
 946
 947
 948                                 client_send_message(router->jabber->t_client, return_m);
 949
 950                                 free(xml);
 951                                 osrf_message_free(result[i]);
 952                         }
 953
 954                         osrf_message* complete = osrf_message_init(
 955                                 STATUS, result[i-1]->thread_trace, result[i-1]->protocol );
 956                         osrf_message_set_status_info( complete,
 957                                         "oilsConnectStatus", "Request Complete", OSRF_STATUS_COMPLETE );
 958                         char* complete_xml = osrf_message_to_xml(complete);
 959                         transport_message* complete_m = message_init(
 960                                         complete_xml, "", msg->thread, msg->sender, "" );
 961                         client_send_message(router->jabber->t_client, complete_m);
 962                         free(complete_xml);
 963                         osrf_message_free(complete);
 964                         free(result);
 965
 966                 }
 967
 968         }
 969
 970         return 1;
 971
 972 }
 973
 974
 975
 976 osrf_message** router_registrar_process_app_request(
 977                 transport_router_registrar* router, osrf_message* omsg, int* num_responses ) {
 978
 979
 980         if( omsg->method_name == NULL )
 981                 return NULL;
 982
 983         osrf_message** result_array = NULL;
 984
 985
 986         debug_handler( "Received method from client: %s", omsg->method_name );
 987
 988         if(!strcmp(omsg->method_name,"opensrf.router.info.class.list")) {
 989
 990                 json* result_content = NULL;
 991
 992                 debug_handler("Processing opensrf.router.info.class.list request");
 993
 994                 result_content = json_object_new_array();
 995                 server_class_node* cur_class = router->server_class_list;
 996                 while( cur_class != NULL ) {
 997
 998                         debug_handler("Adding %s to request list", cur_class->server_class);
 999
1000                         json_object_array_add(
1001                                         result_content, json_object_new_string(cur_class->server_class));
1002                         cur_class = cur_class->next;
1003                 }
1004                 result_array = safe_malloc(sizeof(osrf_message*));
1005                 *num_responses = 1;
1006
1007                 result_array[0] = osrf_message_init(
1008                         RESULT, omsg->thread_trace, omsg->protocol );
1009                 osrf_message_set_result_content( result_array[0],
1010                                 json_object_to_json_string(result_content) );
1011                 json_object_put(result_content);
1012
1013
1014         } else if(!strcmp(omsg->method_name,"opensrf.router.info.stats")) {
1015
1016                 /* we have a server_class array which holds an array of node_objects.
1017                         each node_object contains an array of stats
1018                         */
1019
1020                 debug_handler("Processing opensrf.router.info.stats request");
1021
1022                 json* result_content = NULL;
1023                 result_content = json_object_new_object();
1024                 server_class_node* cur_class = router->server_class_list;
1025
1026                 while( cur_class != NULL ) {
1027
1028                         server_node* start_node = cur_class->current_server_node;
1029                         server_node* cur_node = start_node;
1030                         if( cur_node == NULL ) continue;
1031
1032                         json* server_object = json_object_new_object();
1033
1034                         do {
1035
1036                                 json* node_stats_array = json_object_new_array();
1037
1038                                 json* json_reg_time = json_object_new_object();
1039                                 json_object_object_add( json_reg_time, "reg_time",
1040                                                 json_object_new_int((int)cur_node->reg_time));
1041                                 json_object_array_add(  node_stats_array, json_reg_time );
1042
1043                                 json* json_upd_time = json_object_new_object();
1044                                 json_object_object_add( json_upd_time, "upd_time",
1045                                                 json_object_new_int((int)cur_node->upd_time));
1046                                 json_object_array_add( node_stats_array, json_upd_time );
1047
1048                                 json* json_la_time = json_object_new_object();
1049                                 json_object_object_add( json_la_time, "la_time",
1050                                                 json_object_new_int((int)cur_node->la_time));
1051                                 json_object_array_add( node_stats_array, json_la_time );
1052
1053                                 json* json_serve_count = json_object_new_object();
1054                                 json_object_object_add( json_serve_count, "serve_count",
1055                                                 json_object_new_int((int)cur_node->serve_count));
1056                                 json_object_array_add( node_stats_array, json_serve_count );
1057
1058                                 json_object_object_add( server_object, cur_node->remote_id, node_stats_array );
1059
1060                                 cur_node = cur_node->next;
1061
1062                         } while( cur_node != start_node );
1063
1064                         json_object_object_add(
1065                                         result_content, cur_class->server_class, server_object );
1066
1067                         cur_class = cur_class->next;
1068
1069
1070                 }
1071
1072                 result_array = safe_malloc(sizeof(osrf_message*));
1073                 *num_responses = 1;
1074
1075                 result_array[0] = osrf_message_init(
1076                         RESULT, omsg->thread_trace, omsg->protocol );
1077                 osrf_message_set_result_content( result_array[0],
1078                                 json_object_to_json_string(result_content) );
1079                 json_object_put(result_content);
1080
1081
1082         } else if(!strcmp(omsg->method_name,"opensrf.system.method.all")) {
1083
1084                 json* content = json_object_new_object();
1085                 json_object_object_add(content, "api_level", json_object_new_string("1"));
1086                 json_object_object_add(content, "api_name", json_object_new_string("opensrf.router.info.class.list"));
1087                 json_object_object_add(content, "server_class", json_object_new_string("router"));
1088                 json_object_object_add(content, "stream", json_object_new_string("0"));
1089
1090                 json* content2 = json_object_new_object();
1091                 json_object_object_add(content2, "api_level", json_object_new_string("1"));
1092                 json_object_object_add(content2, "api_name", json_object_new_string("opensrf.router.info.stats"));
1093                 json_object_object_add(content2, "server_class", json_object_new_string("router"));
1094                 json_object_object_add(content2, "stream", json_object_new_string("0"));
1095
1096                 json* content3 = json_object_new_object();
1097                 json_object_object_add(content3, "api_level", json_object_new_string("1"));
1098                 json_object_object_add(content3, "api_name", json_object_new_string("opensrf.system.method.all"));
1099                 json_object_object_add(content3, "server_class", json_object_new_string("router"));
1100                 json_object_object_add(content3, "stream", json_object_new_string("1"));
1101
1102                 result_array = safe_malloc(3*sizeof(osrf_message*));
1103                 *num_responses = 3;
1104
1105                 result_array[0] = osrf_message_init(
1106                         RESULT, omsg->thread_trace, omsg->protocol );
1107                 osrf_message_set_result_content( result_array[0], json_object_to_json_string(content) );
1108                 json_object_put(content);
1109
1110                 result_array[1] = osrf_message_init(
1111                         RESULT, omsg->thread_trace, omsg->protocol );
1112                 osrf_message_set_result_content( result_array[1], json_object_to_json_string(content2) );
1113                 json_object_put(content2);
1114
1115                 result_array[2] = osrf_message_init(
1116                         RESULT, omsg->thread_trace, omsg->protocol );
1117                 osrf_message_set_result_content( result_array[1], json_object_to_json_string(content3) );
1118                 json_object_put(content3);
1119
1120
1121         }
1122
1123
1124         if( result_array == NULL || result_array[0] == NULL )
1125                 return NULL;
1126
1127         return result_array;
1128 }
1129
1130
1131
1132
1133 int router_registrar_free( transport_router_registrar* router_registrar ) {
1134         if( router_registrar == NULL ) return 0;
1135         jabber_connect_free( router_registrar->jabber );
1136
1137         /* free the server_class list XXX */
1138         while( router_registrar->server_class_list != NULL ) {
1139                 remove_server_class(router_registrar, router_registrar->server_class_list);
1140                 debug_handler( "Removed server classes in registrar free");
1141         }
1142
1143         transport_router_registrar* router = router_registrar;
1144
1145         /* make this better
1146         int i = 0;
1147         while(1) {
1148
1149                 if( router->trusted_servers[i] == NULL &&
1150                                 router->trusted_clients[i] == NULL )
1151                         break;
1152
1153                 if(router->trusted_servers[i] != NULL)
1154                         free(router->trusted_servers[i]);
1155                 if(router->trusted_clients[i] != NULL)
1156                         free(router->trusted_clients[i]);
1157                 i++;
1158         }
1159         */
1160
1161         free( router_registrar );
1162         return 1;
1163 }
1164
1165
1166 int server_class_node_free( server_class_node* node ) {
1167         if( node == NULL ) { return 0; }
1168         if( node->server_class != NULL )
1169                 free( node->server_class );
1170
1171         jabber_connect_free( node->jabber );
1172
1173         /* just in case, free the list */
1174         while( node->current_server_node != NULL ) {
1175                 unregister_server_node( node, node->current_server_node->remote_id );
1176         }
1177         free( node );
1178         return 1;
1179 }
1180
1181 int server_node_free( server_node* node ) {
1182         if( node == NULL ) { return 0; }
1183         message_free( node->last_sent );
1184         free( node->remote_id );
1185         free( node );
1186         return 1;
1187 }
1188
1189 int jabber_connect_free( jabber_connect* jabber ) {
1190         if( jabber == NULL ) { return 0; }
1191         client_free( jabber->t_client );
1192         free( jabber->username );
1193         free( jabber->password );
1194         free( jabber->resource );
1195         free( jabber->server );
1196         free( jabber );
1197         return 1;
1198 }
1199
1200