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  uint8[]  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         {
  83                 this.fname = "/" + GLib.Checksum.compute_for_string(GLib.ChecksumType.MD5, data, data.length) + ".js";
  84                 this.data = data.data;
  85                 this.content_type = "text/javascript";
  86                 this.size= data.length;
  87
  88
  89         }
  90
  91         public FakeServerCache( string fname ) {
  92
  93                 this.fname = fname;
  94
  95                 var  file = File.new_for_path ( GLib.Environment.get_home_dir() + "/gitlive" + fname);
  96                 if (!file.query_exists()) {
  97                         this.data = "".data;
  98                         this.content_type = "";
  99                         this.size = 0;
 100                         return;
 101                 }
 102                 var info = file.query_info(
 103                                  "standard::*",
 104                                 FileQueryInfoFlags.NONE
 105                 );
 106                 this.content_type = info.get_content_type();
 107                 this.size = info.get_size();
 108                 uint8[] data;
 109                 size_t length;
 110                 try {
 111                         GLib.FileUtils.get_data(file.get_path(), out data);
 112                 } catch (Error e) {
 113                         this.data = "".data;
 114                         this.size = 0;
 115                         this.content_type = "";
 116                         return;
 117                 }
 118
 119                 this.data = data;
 120
 121                 print("FakeServerCache :%s, %s (%s/%d)\n", fname ,
 122                         this.content_type, this.size.to_string(), this.data.length);
 123
 124
 125         }
 126
 127
 128         public void run(WebKit.URISchemeRequest request, Cancellable? cancellable)
 129         {
 130                 var stream =  new GLib.MemoryInputStream.from_data (this.data,  GLib.free);
 131                 print("SEND %s\nwe", this.size.to_string());
 132
 133                 request.finish(stream,
 134                                          this.size,
 135                                          this.content_type);
 136
 137
 138
 139             return;
 140
 141         }
 142
 143
 144 }
 145
 146 public class FakeServer : Object
 147 {
 148         WebKit.WebView view;
 149
 150         public FakeServer(WebKit.WebView wkview)
 151         {
 152                 this.view = wkview;
 153
 154
 155                 //
 156
 157
 158                 // Hook up signals.
 159
 160                 //this.view.resource_load_started.connect(on_resource_request_starting);
 161                 //this.view.navigation_policy_decision_requested.connect(on_navigation_policy_decision_requested);
 162                 //this.view.new_window_policy_decision_requested.connect(on_navigation_policy_decision_requested);
 163
 164                  //
 165                 var cx = WebKit.WebContext.get_default();
 166                 //var cx = this.view.get_context();
 167                 cx.register_uri_scheme("xhttp",  serve);
 168                 cx.set_cache_model (WebKit.CacheModel.DOCUMENT_VIEWER);
 169
 170                 // these do not help for cross domain requests..
 171
 172                 //cx.get_security_manager().register_uri_scheme_as_cors_enabled("xhttp");
 173                 //cx.get_security_manager().register_uri_scheme_as_cors_enabled("http");
 174                 //cx.register_uri_scheme_as_cors_enabled("xhttp");
 175        // = crash  cx.set_process_model (WebKit.ProcessModel.MULTIPLE_SECONDARY_PROCESSES );
 176     }
 177
 178
 179     public void serve(WebKit.URISchemeRequest request)
 180     {
 181                 // request is URISchemeRequest
 182
 183                 print("REQ: %s\n",request.get_path());
 184                 var cdata = FakeServerCache.factory(request.get_path());
 185
 186                 if (cdata.size < 1 ) {
 187                         print("Skip file missing = %s/gitlive%s\n", GLib.Environment.get_home_dir() , request.get_path());
 188                         request.finish_error(new FakeServerError.FILE_DOES_NOT_EXIST ("My error msg"));
 189                         return;
 190                 }
 191
 192                 print("Send :%s, %s (%s/%d)", request.get_path(),
 193                       cdata.content_type, cdata.size.to_string(), cdata.data.length);
 194                 cdata.run(request,    null);
 195
 196         }
 197
 198
 199 }