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