git.roojs.org Git - app.Builder.js/blob - src/Builder4/FakeServer.vala

   1 /**
   2  * Originally this was supposed to intercept http calls and redirect them
   3  * but that is not supported in webkit2 (without using the extension api)
   4  *
   5  * so for now we have modified our server to serve use a base url of xhttp:
   6  *
   7  * so all relative urls are based on that
   8  *
   9  * Idea is to serve the files from the file system, so no need to setup apache etc...
  10  * This should work for the static content like css / javascript etc.. but
  11  * will cause issues with 'dynamic' xhr files (eg. the php stuff)
  12  *
  13  * the idea is nicked from geary.
  14  *
  15  */
  16 public errordomain FakeServerError {
  17         FILE_DOES_NOT_EXIST
  18 }
  19
  20 public class FakeServerCache : Object
  21 {
  22
  23         public string data;
  24         public string content_type;
  25         public int64 size;
  26
  27         public static Gee.HashMap<string,FakeServerCache> cache;
  28
  29         public static FakeServerCache factory(string fname)
  30         {
  31             if (cache == null) {
  32                 cache = new Gee.HashMap<string,FakeServerCache>();
  33             }
  34             if (cache.has_key(fname)) {
  35                 return cache.get(fname);
  36             }
  37             var el = new  FakeServerCache(fname);
  38
  39
  40             cache.set(fname, el);
  41             return el;
  42         }
  43
  44
  45         public FakeServerCache( string fname) {
  46                 var  file = File.new_for_path ( GLib.Environment.get_home_dir() + "/gitlive" + fname);
  47                 if (!file.query_exists()) {
  48                     this.data = "";
  49                     this.content_type = "";
  50                     this.size = 0;
  51                     return;
  52                 }
  53                  var info = file.query_info(
  54                                  "standard::*",
  55                                 FileQueryInfoFlags.NONE
  56                 );
  57             this.content_type = info.get_content_type();
  58             this.size = info.get_size();
  59             string data;
  60             size_t length;
  61             try {
  62                 GLib.FileUtils.get_contents(file.get_path(), out data, out length);
  63             } catch (Error e) {
  64
  65
  66             }
  67
  68             this.data = data;
  69
  70             print("FakeServerCache :%s, %s (%s/%d)\n", fname ,
  71                   this.content_type, this.size.to_string(), this.data.length);
  72
  73
  74         }
  75
  76
  77         public   InputStream? run_async( )
  78         {
  79                 //var f = ensure_resource();
  80
  81                 var stream =  new GLib.MemoryInputStream.from_data (this.data.data,  GLib.free);
  82
  83                 return stream;
  84         }
  85         private async InputStream? run_impl(Cancellable? cancellable) throws GLib.Error
  86         {
  87             SourceFunc callback = run_impl.callback;
  88             InputStream? ret = null;
  89             Error? err = null;
  90             new Thread<void*>("builder-fake-webserver", () => {
  91                     // Actually do it
  92                     try
  93                     {
  94                             ret = this.run_async();
  95                     }
  96                     catch (Error e)
  97                     {
  98                             err = e;
  99                     }
 100
 101                     // Schedule the callback in idle
 102                     Idle.add((owned)callback);
 103                     return null;
 104             });
 105
 106             // Wait for it to finish, yield to caller
 107             yield;
 108
 109             if (err != null)
 110             {
 111                     throw err;
 112             }
 113
 114             // Return the input stream
 115             return ret;
 116         }
 117         public void run(WebKit.URISchemeRequest request, Cancellable? cancellable)
 118         {
 119             run_impl.begin(cancellable, (obj, res) => {
 120                 InputStream? stream = null;
 121
 122                 try {
 123                         stream = this.run_impl.end(res);
 124                 } catch (Error e)  {
 125                     request.finish_error(e);
 126                 }
 127                 if (stream == null) {
 128                     stream = new MemoryInputStream();
 129                 }
 130                 print("Send : %s (%s/%d)\n",
 131                       this.content_type, this.size.to_string(), this.data.length);
 132
 133                 request.finish(stream,
 134                          this.size,
 135                          this.content_type);
 136
 137
 138                 });
 139         }
 140 }
 141
 142 public class FakeServer : Object
 143 {
 144         WebKit.WebView view;
 145
 146         public FakeServer(WebKit.WebView wkview)
 147         {
 148                 this.view = wkview;
 149
 150
 151                 //
 152
 153
 154         // Hook up signals.
 155
 156         //this.view.resource_load_started.connect(on_resource_request_starting);
 157         //this.view.navigation_policy_decision_requested.connect(on_navigation_policy_decision_requested);
 158         //this.view.new_window_policy_decision_requested.connect(on_navigation_policy_decision_requested);
 159
 160          //
 161         var cx = this.view.get_context();
 162         cx.register_uri_scheme("xhttp",  serve);
 163         cx.set_cache_model (WebKit.CacheModel.DOCUMENT_VIEWER);
 164
 165     }
 166
 167
 168     public void serve(WebKit.URISchemeRequest request)
 169     {
 170                 // request is URISchemeRequest
 171
 172                 print("REQ: %s\n",request.get_path());
 173                 var cdata = FakeServerCache.factory(request.get_path());
 174
 175                 if (cdata.size < 1 ) {
 176                         print("Skip file missing = %s/gitlive%s\n", GLib.Environment.get_home_dir() , request.get_path());
 177                         request.finish_error(new FakeServerError.FILE_DOES_NOT_EXIST ("My error msg"));
 178                         return;
 179                 }
 180
 181                 print("Send :%s, %s (%s/%d)", request.get_path(),
 182                       cdata.content_type, cdata.size.to_string(), cdata.data.length);
 183                 cdata.run(request,    null);
 184                 //var stream = new GLib.MemoryInputStream.from_data (cdata.data.data,  GLib.free);
 185
 186                 // we could cache these memory streams... so no need to keep reading from disk...
 187                 // then what happens if file get's updated - neet to check the data against the cache..
 188
 189
 190
 191                 //request.finish (  stream, cdata.size  , cdata.content_type);
 192                 //stream.close();
 193         }
 194
 195
 196 }