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