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         public string fname;
  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            // print ("CACHE look for ==%s==\n", fname);
  35             if (cache.has_key(fname)) {
  36                 print ("CACHE got  %s\n", fname);
  37                 return cache.get(fname);
  38             }
  39             print ("CACHE create %s\n", fname);
  40
  41             var el = new  FakeServerCache(fname);
  42
  43             cache.set(fname, el);
  44             return el;
  45         }
  46         // called onload to clear the temporary cached file..
  47         public static void remove(string fname) {
  48             if (cache == null) {
  49                 return;
  50             }
  51             if (!cache.has_key(fname)) {
  52                 return;
  53             }
  54
  55
  56             FakeServerCache v;
  57
  58             cache.unset(fname, out v);
  59
  60
  61
  62         }
  63         public static  void clear()
  64         {
  65             if (cache == null) {
  66                 return;
  67             }
  68             cache.clear();
  69         }
  70
  71         public static FakeServerCache factory_with_data(string data) {
  72              if (cache == null) {
  73                 cache = new Gee.HashMap<string,FakeServerCache>();
  74            }
  75             var el = new  FakeServerCache.with_data(data);
  76             print("CACHE - store %s\n", el.fname);
  77              cache.set(el.fname, el);
  78             return el;
  79         }
  80
  81         public FakeServerCache.with_data( string data ) {
  82             this.fname = "/" + GLib.Checksum.compute_for_string(GLib.ChecksumType.MD5, data, data.length) + ".js";
  83             this.data = data;
  84             this.content_type = "text/javascript";
  85             this.size= data.length;
  86
  87
  88         }
  89
  90         public FakeServerCache( string fname ) {
  91
  92                 this.fname = fname;
  93
  94
  95
  96                 var  file = File.new_for_path ( GLib.Environment.get_home_dir() + "/gitlive" + fname);
  97                 if (!file.query_exists()) {
  98                     this.data = "";
  99                     this.content_type = "";
 100                     this.size = 0;
 101                     return;
 102                 }
 103                  var info = file.query_info(
 104                                  "standard::*",
 105                                 FileQueryInfoFlags.NONE
 106                 );
 107             this.content_type = info.get_content_type();
 108             this.size = info.get_size();
 109             string data;
 110             size_t length;
 111             try {
 112                 GLib.FileUtils.get_contents(file.get_path(), out data, out length);
 113             } catch (Error e) {
 114                 this.data = "";
 115                 this.size = 0;
 116                  this.content_type = "";
 117                 return;
 118             }
 119
 120             this.data = data;
 121
 122             print("FakeServerCache :%s, %s (%s/%d)\n", fname ,
 123                   this.content_type, this.size.to_string(), this.data.length);
 124
 125
 126         }
 127
 128
 129         public void run(WebKit.URISchemeRequest request, Cancellable? cancellable)
 130         {
 131             var stream =  new GLib.MemoryInputStream.from_data (this.data.data,  GLib.free);
 132                 request.finish(stream,
 133                          this.size,
 134                          this.content_type);
 135
 136
 137
 138             return;
 139
 140         }
 141
 142
 143 }
 144
 145 public class FakeServer : Object
 146 {
 147         WebKit.WebView view;
 148
 149         public FakeServer(WebKit.WebView wkview)
 150         {
 151                 this.view = wkview;
 152
 153
 154                 //
 155
 156
 157         // Hook up signals.
 158
 159         //this.view.resource_load_started.connect(on_resource_request_starting);
 160         //this.view.navigation_policy_decision_requested.connect(on_navigation_policy_decision_requested);
 161         //this.view.new_window_policy_decision_requested.connect(on_navigation_policy_decision_requested);
 162
 163          //
 164         var cx = WebKit.WebContext.get_default();
 165         //var cx = this.view.get_context();
 166         cx.register_uri_scheme("xhttp",  serve);
 167         cx.set_cache_model (WebKit.CacheModel.DOCUMENT_VIEWER);
 168
 169         // these do not help for cross domain requests..
 170
 171         //cx.get_security_manager().register_uri_scheme_as_cors_enabled("xhttp");
 172         //cx.get_security_manager().register_uri_scheme_as_cors_enabled("http");
 173     //cx.register_uri_scheme_as_cors_enabled("xhttp");
 174        // = crash  cx.set_process_model (WebKit.ProcessModel.MULTIPLE_SECONDARY_PROCESSES );
 175     }
 176
 177
 178     public void serve(WebKit.URISchemeRequest request)
 179     {
 180                 // request is URISchemeRequest
 181
 182                 print("REQ: %s\n",request.get_path());
 183                 var cdata = FakeServerCache.factory(request.get_path());
 184
 185                 if (cdata.size < 1 ) {
 186                         print("Skip file missing = %s/gitlive%s\n", GLib.Environment.get_home_dir() , request.get_path());
 187                         request.finish_error(new FakeServerError.FILE_DOES_NOT_EXIST ("My error msg"));
 188                         return;
 189                 }
 190
 191                 print("Send :%s, %s (%s/%d)", request.get_path(),
 192                       cdata.content_type, cdata.size.to_string(), cdata.data.length);
 193                 cdata.run(request,    null);
 194
 195         }
 196
 197
 198 }