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  * At present this serves from ~/gitlive/****  - that probably needs more thought..
  16  *
  17  *
  18  */
  19 public errordomain FakeServerError {
  20         FILE_DOES_NOT_EXIST
  21 }
  22
  23 public class FakeServerCache : Object
  24 {
  25         public string fname;
  26         public  uint8[]  data;
  27         public string content_type;
  28         public int64 size;
  29
  30         public static Gee.HashMap<string,FakeServerCache> cache;
  31
  32         public static FakeServerCache factory(string fname, string scheme)
  33         {
  34                 if (cache == null) {
  35                         cache = new Gee.HashMap<string,FakeServerCache>();
  36                 }
  37
  38            // print ("CACHE look for ==%s==\n", fname);
  39             if (scheme == "resources") {
  40                         return new FakeServerCache.from_resource(fname);
  41                 }
  42
  43             if (cache.has_key(fname)) {
  44                         print ("CACHE got  %s\n", fname);
  45                         return cache.get(fname);
  46                 }
  47             print ("CACHE create %s\n", fname);
  48
  49             var el = new  FakeServerCache(fname);
  50
  51             cache.set(fname, el);
  52             return el;
  53         }
  54         // called onload to clear the temporary cached file..
  55         public static void remove(string fname) {
  56                 if (cache == null) {
  57                         return;
  58                 }
  59                 if (!cache.has_key(fname)) {
  60                         return;
  61                 }
  62
  63
  64             FakeServerCache v;
  65
  66             cache.unset(fname, out v);
  67
  68
  69
  70         }
  71         public static  void clear()
  72         {
  73                 if (cache == null) {
  74                         return;
  75                 }
  76                 cache.clear();
  77         }
  78
  79         public static FakeServerCache factory_with_data(string data) {
  80                 if (cache == null) {
  81                         cache = new Gee.HashMap<string,FakeServerCache>();
  82                 }
  83                 var el = new  FakeServerCache.with_data(data);
  84                 print("CACHE - store %s\n", el.fname);
  85                 cache.set(el.fname, el);
  86                 return el;
  87         }
  88
  89
  90
  91
  92         public FakeServerCache.with_data( string data )
  93         {
  94                 this.fname = "/" + GLib.Checksum.compute_for_string(GLib.ChecksumType.MD5, data, data.length) + ".js";
  95                 this.data = data.data;
  96                 this.content_type = "text/javascript";
  97                 this.size= data.length;
  98
  99
 100         }
 101         public FakeServerCache.from_resource( string fname )
 102         {
 103                 this.fname = "/" + GLib.Checksum.compute_for_string(GLib.ChecksumType.MD5, data, data.length) + ".js";
 104                 this.data = data.data;
 105                 this.content_type = "text/javascript";
 106                 this.size= data.length;
 107
 108
 109         }
 110         public FakeServerCache( string fname ) {
 111
 112                 this.fname = fname;
 113
 114                 var  file = File.new_for_path ( GLib.Environment.get_home_dir() + "/gitlive" + fname);
 115                 if (!file.query_exists()) {
 116                         this.data = "".data;
 117                         this.content_type = "";
 118                         this.size = 0;
 119                         return;
 120                 }
 121                 var info = file.query_info(
 122                                  "standard::*",
 123                                 FileQueryInfoFlags.NONE
 124                 );
 125                 this.content_type = info.get_content_type();
 126                 this.size = info.get_size();
 127                 uint8[] data;
 128                 size_t length;
 129                 try {
 130                         GLib.FileUtils.get_data(file.get_path(), out data);
 131                 } catch (Error e) {
 132                         this.data = "".data;
 133                         this.size = 0;
 134                         this.content_type = "";
 135                         return;
 136                 }
 137
 138                 this.data = data;
 139
 140                 print("FakeServerCache :%s, %s (%s/%d)\n", fname ,
 141                         this.content_type, this.size.to_string(), this.data.length);
 142
 143
 144         }
 145
 146
 147         public void run(WebKit.URISchemeRequest request, Cancellable? cancellable)
 148         {
 149                 var stream =  new GLib.MemoryInputStream.from_data (this.data,  GLib.free);
 150                 print("SEND %s\nwe", this.size.to_string());
 151
 152                 request.finish(stream,
 153                                          this.size,
 154                                          this.content_type);
 155
 156
 157
 158             return;
 159
 160         }
 161
 162
 163 }
 164
 165 public class FakeServer : Object
 166 {
 167         WebKit.WebView view;
 168
 169         public FakeServer(WebKit.WebView wkview)
 170         {
 171                 this.view = wkview;
 172
 173
 174                 var cx = WebKit.WebContext.get_default();
 175                 //var cx = this.view.get_context();
 176                 cx.register_uri_scheme("xhttp",  serve);
 177                 cx.register_uri_scheme("resources",  serve);
 178                 cx.set_cache_model (WebKit.CacheModel.DOCUMENT_VIEWER);
 179
 180                 // these do not help for cross domain requests..
 181
 182                 //cx.get_security_manager().register_uri_scheme_as_cors_enabled("xhttp");
 183                 //cx.get_security_manager().register_uri_scheme_as_cors_enabled("http");
 184                 //cx.register_uri_scheme_as_cors_enabled("xhttp");
 185        // = crash  cx.set_process_model (WebKit.ProcessModel.MULTIPLE_SECONDARY_PROCESSES );
 186     }
 187
 188
 189     public void serve(WebKit.URISchemeRequest request)
 190     {
 191                 // request is URISchemeRequest
 192
 193                 print("REQ: %s\n",request.get_path());
 194                 var cdata = FakeServerCache.factory(request.get_path() , request.get_scheme());
 195
 196                 if (cdata.size < 1 ) {
 197                         print("Skip file missing = %s/gitlive%s\n", GLib.Environment.get_home_dir() , request.get_path());
 198                         request.finish_error(new FakeServerError.FILE_DOES_NOT_EXIST ("My error msg"));
 199                         return;
 200                 }
 201
 202                 print("Send :%s, %s (%s/%d)", request.get_path(),
 203                       cdata.content_type, cdata.size.to_string(), cdata.data.length);
 204                 cdata.run(request,    null);
 205
 206         }
 207
 208
 209 }