unify backend sanity checking code

[tt-rss.git] / functions.js

diff --git a/functions.js b/functions.js
index 59ff28efb8dd8a16aa0cb7c78e09e690e5fff481..2266bfc25e528aa774e8317f2c5b912a816403f1 100644 (file)
--- a/functions.js
+++ b/functions.js
@@ -2,6 +2,7 @@ var hotkeys_enabled = true;
 var notify_silent = false;
 var last_progress_point = 0;
 var async_counters_work = false;
+var sanity_check_done = false;
 
 /* add method to remove element from array */
 
@@ -2200,4 +2201,76 @@ function unsubscribeFeed(feed_id, title) {
 }
 
 
+function backend_sanity_check_callback(transport) {
+
+       try {
+
+               if (sanity_check_done) {
+                       fatalError(11, "Sanity check request received twice. This can indicate "+
+                     "presence of Firebug or some other disrupting extension. "+
+                               "Please disable it and try again.");
+                       return;
+               }
+
+               if (!transport.responseXML) {
+                       if (!store) {
+                               fatalError(3, "Sanity check: Received reply is not XML", 
+                                       transport.responseText);
+                               return;
+                       } else {
+                               init_offline();
+                               return;
+                       }
+               }
+
+               if (getURLParam("offline")) {
+                       return init_offline();
+               }
+
+               var reply = transport.responseXML.firstChild.firstChild;
+
+               if (!reply) {
+                       fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
+                       return;
+               }
+
+               var error_code = reply.getAttribute("error-code");
+       
+               if (error_code && error_code != 0) {
+                       return fatalError(error_code, reply.getAttribute("error-msg"));
+               }
+
+               console.log("sanity check ok");
+
+               var params = reply.nextSibling;
+
+               if (params) {
+                       console.log('reading init-params...');
+                       var param = params.firstChild;
+
+                       while (param) {
+                               var k = param.getAttribute("key");
+                               var v = param.getAttribute("value");
+                               console.log(k + " => " + v);
+                               init_params[k] = v;                                     
+
+                               if (db) {
+                                       db.execute("DELETE FROM init_params WHERE key = ?", [k]);
+                                       db.execute("INSERT INTO init_params (key,value) VALUES (?, ?)",
+                                               [k, v]);
+                               }
+
+                               param = param.nextSibling;
+                       }
+               }
+
+               sanity_check_done = true;
+
+               init_second_stage();
+
+       } catch (e) {
+               exception_error("backend_sanity_check_callback", e, transport); 
+       } 
+}
+