src/libtransport/transport_client.c

   1 #include "transport_client.h"
   2
   3
   4 //int main( int argc, char** argv );
   5
   6 /*
   7 int main( int argc, char** argv ) {
   8
   9         transport_message* recv;
  10         transport_message* send;
  11
  12         transport_client* client = client_init( "spacely.georgialibraries.org", 5222 );
  13
  14         // try to connect, allow 15 second connect timeout
  15         if( client_connect( client, "admin", "asdfjkjk", "system", 15 ) ) {
  16                 printf("Connected...\n");
  17         } else {
  18                 printf( "NOT Connected...\n" ); exit(99);
  19         }
  20
  21         while( (recv = client_recv( client, -1 )) ) {
  22
  23                 if( recv->body ) {
  24                         int len = strlen(recv->body);
  25                         char buf[len + 20];
  26                         memset( buf, 0, len + 20);
  27                         sprintf( buf, "Echoing...%s", recv->body );
  28                         send = message_init( buf, "Echoing Stuff", "12345", recv->sender, "" );
  29                 } else {
  30                         send = message_init( " * ECHOING * ", "Echoing Stuff", "12345", recv->sender, "" );
  31                 }
  32
  33                 if( send == NULL ) { printf("something's wrong"); }
  34                 client_send_message( client, send );
  35
  36                 message_free( send );
  37                 message_free( recv );
  38         }
  39
  40         printf( "ended recv loop\n" );
  41
  42         return 0;
  43
  44 }
  45 */
  46
  47
  48 transport_client* client_init( char* server, int port, char* unix_path, int component ) {
  49
  50         if(server == NULL) return NULL;
  51
  52         /* build and clear the client object */
  53         size_t c_size = sizeof( transport_client);
  54         transport_client* client = (transport_client*) safe_malloc( c_size );
  55
  56         /* build and clear the message list */
  57         size_t l_size = sizeof( transport_message_list );
  58         client->m_list = (transport_message_list*) safe_malloc( l_size );
  59
  60         client->m_list->type = MESSAGE_LIST_HEAD;
  61         client->session = init_transport( server, port, unix_path, client, component );
  62
  63         client->session->message_callback = client_message_handler;
  64         client->error = 0;
  65
  66         return client;
  67 }
  68
  69
  70 int client_connect( transport_client* client,
  71                 char* username, char* password, char* resource,
  72                 int connect_timeout, enum TRANSPORT_AUTH_TYPE  auth_type ) {
  73         if(client == NULL) return 0;
  74         return session_connect( client->session, username,
  75                         password, resource, connect_timeout, auth_type );
  76 }
  77
  78
  79 int client_disconnect( transport_client* client ) {
  80         if( client == NULL ) { return 0; }
  81         return session_disconnect( client->session );
  82 }
  83
  84 int client_connected( transport_client* client ) {
  85         if(client == NULL) return 0;
  86         return client->session->state_machine->connected;
  87 }
  88
  89 int client_send_message( transport_client* client, transport_message* msg ) {
  90         if(client == NULL) return 0;
  91         if( client->error ) return -1;
  92         return session_send_msg( client->session, msg );
  93 }
  94
  95
  96 transport_message* client_recv( transport_client* client, int timeout ) {
  97         if( client == NULL ) { return NULL; }
  98
  99         transport_message_node* node;
 100         transport_message* msg;
 101
 102
 103         /* see if there are any message in the messages queue */
 104         if( client->m_list->next != NULL ) {
 105                 /* pop off the first one... */
 106                 node = client->m_list->next;
 107                 client->m_list->next = node->next;
 108                 msg = node->message;
 109                 free( node );
 110                 return msg;
 111         }
 112
 113         if( timeout == -1 ) {  /* wait potentially forever for data to arrive */
 114
 115                 while( client->m_list->next == NULL ) {
 116                 //      if( ! session_wait( client->session, -1 ) ) {
 117                         int x;
 118                         if( (x = session_wait( client->session, -1 )) ) {
 119                                 osrfLogDebug(OSRF_LOG_MARK, "session_wait returned failure code %d\n", x);
 120                                 client->error = 1;
 121                                 return NULL;
 122                         }
 123                 }
 124
 125         } else { /* wait at most timeout seconds */
 126
 127
 128                 /* if not, loop up to 'timeout' seconds waiting for data to arrive */
 129                 time_t start = time(NULL);
 130                 time_t remaining = (time_t) timeout;
 131
 132                 int counter = 0;
 133
 134                 int wait_ret;
 135                 while( client->m_list->next == NULL && remaining >= 0 ) {
 136
 137                         if( (wait_ret= session_wait( client->session, remaining)) ) {
 138                                 client->error = 1;
 139                                 osrfLogDebug(OSRF_LOG_MARK, "session_wait returned failure code %d: setting error=1\n", wait_ret);
 140                                 return NULL;
 141                         }
 142
 143                         ++counter;
 144
 145 #ifdef _ROUTER
 146                         // session_wait returns -1 if there is no more data and we're a router
 147                         if( remaining == 0 ) { // && wait_ret == -1 ) {
 148                                 break;
 149                         }
 150 #else
 151                         if( remaining == 0 ) // or infinite loop
 152                                 break;
 153 #endif
 154
 155                         remaining -= (int) (time(NULL) - start);
 156                 }
 157
 158         }
 159
 160         /* again, see if there are any messages in the message queue */
 161         if( client->m_list->next != NULL ) {
 162                 /* pop off the first one... */
 163                 node = client->m_list->next;
 164                 client->m_list->next = node->next;
 165                 msg = node->message;
 166                 free( node );
 167                 return msg;
 168
 169         } else {
 170                 return NULL;
 171         }
 172 }
 173
 174 /* throw the message into the message queue */
 175 void client_message_handler( void* client, transport_message* msg ){
 176
 177         if(client == NULL) return;
 178         if(msg == NULL) return;
 179
 180         transport_client* cli = (transport_client*) client;
 181
 182         size_t len = sizeof(transport_message_node);
 183         transport_message_node* node =
 184                 (transport_message_node*) safe_malloc(len);
 185         node->type = MESSAGE_LIST_ITEM;
 186         node->message = msg;
 187
 188
 189         /* find the last node and put this onto the end */
 190         transport_message_node* tail = cli->m_list;
 191         transport_message_node* current = tail->next;
 192
 193         while( current != NULL ) {
 194                 tail = current;
 195                 current = current->next;
 196         }
 197         tail->next = node;
 198 }
 199
 200
 201 int client_free( transport_client* client ){
 202         if(client == NULL) return 0;
 203
 204         session_free( client->session );
 205         transport_message_node* current = client->m_list->next;
 206         transport_message_node* next;
 207
 208         /* deallocate the list of messages */
 209         while( current != NULL ) {
 210                 next = current->next;
 211                 message_free( current->message );
 212                 free(current);
 213                 current = next;
 214         }
 215
 216         free( client->m_list );
 217         free( client );
 218         return 1;
 219 }
 220