OpenSRF/src/jserver/jserver-c_session.c

   1 #include "jserver-c_session.h"
   2
   3 static int xml_error_occured = 0;
   4 static int client_sent_disconnect = 0;
   5
   6 jserver_session* jserver_session_init() {
   7
   8         jserver_session* session = safe_malloc(sizeof(jserver_session));
   9         session->parser_ctxt = xmlCreatePushParserCtxt(sax_handler, session, "", 0, NULL);
  10         session->current_msg = xmlNewDoc(BAD_CAST "1.0");
  11         session->current_to = strdup("");
  12         session->current_from = strdup("");
  13         session->state = 0;
  14         xmlKeepBlanksDefault(0);
  15         return session;
  16 }
  17
  18 void jserver_session_free(jserver_session* session) {
  19         if(session == NULL) return;
  20
  21         if( session->parser_ctxt) {
  22                 xmlFreeDoc(session->parser_ctxt->myDoc);
  23                 xmlFreeParserCtxt(session->parser_ctxt);
  24         }
  25
  26         free(session->current_username);
  27         free(session->current_resource);
  28         free(session->current_domain);
  29
  30         xmlCleanupCharEncodingHandlers();
  31         xmlFreeDoc(session->current_msg);
  32         xmlCleanupParser();
  33
  34         free(session);
  35 }
  36
  37
  38 int jserver_session_push_data(jserver_session* session, char* data) {
  39         if(session == NULL || data == NULL) return -1;
  40         debug_handler("pushing data into xml parser: %s", data);
  41         xmlParseChunk(session->parser_ctxt, data, strlen(data), 0);
  42         if(xml_error_occured) {
  43                 xml_error_occured = 0;
  44                 return -1;
  45         }
  46
  47         if(client_sent_disconnect) {
  48                 client_sent_disconnect = 0;
  49                 if(session->on_client_finish)
  50                         session->on_client_finish(session->blob);
  51         }
  52
  53         return 0;
  54 }
  55
  56 void sax_start_doc(void* blob) {
  57         debug_handler("Starting new session doc");
  58 }
  59
  60 // ---------------------------------------------------------------------------------
  61 // Our SAX handlers
  62 // ---------------------------------------------------------------------------------
  63 void sax_start_element(
  64                 void* blob, const xmlChar *name, const xmlChar **atts) {
  65
  66         jserver_session* session = (jserver_session*) blob;
  67         if(!session) return;
  68
  69         debug_handler("jserver-c_session received opening XML node %s", name);
  70
  71         if(!strcmp(name, "stream:stream")) {
  72
  73                 /* opening a new session */
  74                 free(session->current_domain);
  75                 session->current_domain = strdup(sax_xml_attr(atts, "to"));
  76                 char* from_domain = sax_xml_attr(atts, "from");
  77                 if(!from_domain) from_domain = "";
  78
  79                 if(session->current_domain == NULL) {
  80                         sax_warning(session->blob, "No 'to' specified in stream opener");
  81
  82                 }       else {
  83                         debug_handler("jserver-c_session received opening stream from client on domain %s",
  84                                 session->current_domain);
  85
  86                         char buf[1024];
  87                         memset(buf,0,1024);
  88                         snprintf(buf, 1023, JSTRING_START_STREAM, session->current_domain, from_domain);
  89
  90                         debug_handler("Session Sending: %s", buf);
  91
  92                         session->state = JABBER_STATE_CONNECTING;
  93                         if(session->on_login_init)
  94                                 session->on_login_init(session->blob, buf);
  95                 }
  96                 return;
  97         }
  98
  99         if(session->state & JABBER_STATE_CONNECTING) {
 100                 /* during the connect shuffle, we have to store off the
 101                         username and resource to determine the routing address */
 102                 if(!strcmp(name,"iq"))
 103                         session->in_iq = 1;
 104                 if(!strcmp(name,"username"))
 105                         session->in_uname = 1;
 106                 if(!strcmp(name,"resource"))
 107                         session->in_resource = 1;
 108         }
 109
 110         if(session->state & JABBER_STATE_CONNECTED) {
 111
 112                 if(!strcmp(name, "message")) {
 113                         /* opening of a new message, build a new doc */
 114                         xmlNodePtr root = xmlNewNode(NULL, name);
 115                         dom_add_attrs(root, atts);
 116                         xmlNodePtr old_root = xmlDocSetRootElement(session->current_msg, root);
 117
 118
 119                         free(session->current_to);
 120
 121                         char* from = sax_xml_attr(atts, "from");
 122                         if(from == NULL) from = "";
 123                         char* to = sax_xml_attr(atts, "to");
 124                         if(to == NULL) to = "";
 125
 126                         session->current_to = strdup(to);
 127
 128                         /* free the old message tree */
 129                         if(old_root) xmlFreeNode(old_root);
 130
 131                 } else {
 132                         xmlNodePtr node = xmlNewNode(NULL, name);
 133                         dom_add_attrs(node, atts);
 134                         xmlAddChild(xmlDocGetRootElement(session->current_msg), node);
 135                 }
 136         }
 137 }
 138
 139 void sax_end_element( void* blob, const xmlChar *name) {
 140         jserver_session* session = (jserver_session*) blob;
 141         if(!session) return;
 142
 143         if(session->state & JABBER_STATE_CONNECTED) {
 144                 if(!strcmp(name, "message")) {
 145                         if(session->on_msg_complete) {
 146
 147                                 debug_handler("Message is complete, finishing DOC");
 148
 149                                 /* we have to make sure the 'from' address is set.. */
 150                                 xmlNodePtr msg = xmlDocGetRootElement(session->current_msg);
 151                                 if(msg) xmlSetProp(msg, BAD_CAST "from", BAD_CAST session->current_from );
 152                                 char* string = _xml_to_string(session->current_msg);
 153
 154                                 session->on_msg_complete(session->blob, string,
 155                                         session->current_from, session->current_to );
 156                                 free(string);
 157                         }
 158                 }
 159         }
 160
 161         if(session->state & JABBER_STATE_CONNECTING) {
 162                 if(session->in_iq) {
 163                         if(!strcmp(name, "iq")) {
 164                                 session->in_iq = 0;
 165
 166                                 char buf[1024];
 167                                 memset(buf, 0, 1024);
 168                                 snprintf(buf, 1023, "%s@%s/%s", session->current_username,
 169                                                 session->current_domain, session->current_resource );
 170                                 if(session->on_from_discovered)
 171                                         session->on_from_discovered(session->blob, buf);
 172
 173                                 free(session->current_from);
 174                                 session->current_from = strdup(buf);
 175                                 debug_handler("Set from address to %s", session->current_from);
 176                                 session->state = JABBER_STATE_CONNECTED;
 177                                 if(session->on_login_ok)
 178                                         session->on_login_ok(session->blob);
 179
 180                         }
 181                 }
 182         }
 183
 184         if(!strcmp(name,"stream:stream")) {
 185                 debug_handler("receive end of client session doc");
 186                 client_sent_disconnect = 1;
 187         }
 188 }
 189
 190 void sax_character( void* blob, const xmlChar *ch, int len) {
 191         jserver_session* session = (jserver_session*) blob;
 192         if(!session) return;
 193
 194         if(session->state & JABBER_STATE_CONNECTED) {
 195                 xmlNodePtr last = xmlGetLastChild(
 196                         xmlDocGetRootElement(session->current_msg));
 197
 198                 xmlNodePtr txt = xmlNewTextLen(ch, len);
 199                 xmlAddChild(last, txt);
 200                 return;
 201         }
 202
 203         if(session->state & JABBER_STATE_CONNECTING) {
 204                 if(session->in_iq) {
 205                         if(session->in_uname) {
 206                                 free(session->current_username);
 207                                 session->current_username = strndup((char*) ch, len);
 208                                 session->in_uname = 0;
 209                         }
 210
 211                         if(session->in_resource) {
 212                                 free(session->current_resource);
 213                                 session->current_resource = strndup((char*) ch, len);
 214                                 session->in_resource = 0;
 215                         }
 216                 }
 217
 218         }
 219 }
 220
 221 void  sax_warning( void* blob, const char* msg, ... ) {
 222
 223         jserver_session* session = (jserver_session*) blob;
 224         if(!session) return;
 225
 226         char buf[1024];
 227         memset(buf, 0,  1024);
 228
 229         va_list args;
 230         va_start(args, msg);
 231         vsnprintf(buf, 1023, msg, args);
 232         va_end(args);
 233         warning_handler("XML Warning : %s", buf);
 234         xml_error_occured = 1;
 235 }
 236
 237
 238 void dom_add_attrs(xmlNodePtr node, const xmlChar** atts) {
 239         int i;
 240         if (node != NULL && atts != NULL) {
 241                 for(i = 0; (atts[i] != NULL); i++) {
 242                         if(atts[i+1]) {
 243                                 xmlNewProp(node, atts[i], atts[i+1]);
 244                                 i++;
 245                         }
 246                 }
 247         }
 248 }
 249
 250 char* sax_xml_attr( const xmlChar** atts, char* attr_name ) {
 251         int i;
 252         if(attr_name == NULL) return NULL;
 253
 254         if (atts != NULL) {
 255                 for(i = 0;(atts[i] != NULL);i++) {
 256                         if(!strcmp(atts[i], attr_name))
 257                                 if(atts[++i])
 258                                         return (char*) atts[i];
 259                 }
 260         }
 261         return NULL;
 262 }
 263
 264
 265
 266 char* _xml_to_string( xmlDocPtr doc ) {
 267
 268         xmlBufferPtr xmlbuf = xmlBufferCreate();
 269         xmlNodeDump( xmlbuf, doc, xmlDocGetRootElement(doc), 0, 0);
 270
 271         char* xml = strdup( (char*) (xmlBufferContent(xmlbuf)));
 272         xmlBufferFree(xmlbuf);
 273
 274         int l = strlen(xml)-1;
 275         if( xml[l] == 10 || xml[l] == 13 )
 276                 xml[l] = '\0';
 277
 278         return xml;
 279
 280 }
 281