modules/content-policy.js

   1 /**
   2  * (C) Copyright 2010-2011 John J. Foerch
   3  *
   4  * Use, modification, and distribution are subject to the terms specified in the
   5  * COPYING file.
   6 **/
   7
   8 function content_policy_init () {
   9     var xulrunner_version = Cc['@mozilla.org/xre/app-info;1']
  10         .getService(Ci.nsIXULAppInfo)
  11         .platformVersion;
  12     var vc = Cc["@mozilla.org/xpcom/version-comparator;1"]
  13         .getService(Ci.nsIVersionComparator);
  14     var reg = Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
  15     var file = file_locator_service.get("CurProcD", Ci.nsIFile);
  16     if (vc.compare(xulrunner_version, "2.0") >= 0) {
  17         file.append("content-policy.manifest");
  18     } else {
  19         file.append("components");
  20         file.append("content-policy.js");
  21     }
  22     reg.autoRegister(file);
  23 }
  24
  25 content_policy_init();
  26
  27 interactive("content-policy-enable",
  28     "Enable content-policy processing.",
  29     function (I) {
  30         if (content_policy_listener.enabled) {
  31             I.minibuffer.message("Content-policy already enabled.");
  32             return;
  33         }
  34         content_policy_listener.enabled = true;
  35         I.minibuffer.message("Content-policy enabled.");
  36     });
  37
  38 interactive("content-policy-disable",
  39     "Enable content-policy processing.",
  40     function (I) {
  41         if (! content_policy_listener.enabled) {
  42             I.minibuffer.message("Content-policy already disabled.");
  43             return;
  44         }
  45         content_policy_listener.enabled = false;
  46         I.minibuffer.message("Content-policy disabled.");
  47     });
  48
  49 interactive("content-policy-toggle",
  50     "Turn the content-policy off if it is on, and on if it is off.",
  51     function (I) {
  52         content_policy_listener.enabled = !content_policy_listener.enabled;
  53         if (content_policy_listener.enabled)
  54             I.minibuffer.message("Content-policy enabled.");
  55         else
  56             I.minibuffer.message("Content-policy disabled.");
  57     });
  58
  59 const content_policy_accept = Ci.nsIContentPolicy.ACCEPT;
  60 const content_policy_reject = Ci.nsIContentPolicy.REJECT_REQUEST;
  61
  62 /*
  63  * By Type Filtering
  64  */
  65
  66 var content_policy_bytype_table = {
  67     1: null, get other () { return this[1]; },
  68              set other (x) { return this[1] = x; },
  69     2: null, get script () { return this[2]; },
  70              set script (x) { return this[2] = x; },
  71     3: null, get image () { return this[3]; },
  72              set image (x) { return this[3] = x; },
  73     4: null, get stylesheet () { return this[4]; },
  74              set stylesheet (x) { return this[4] = x; },
  75     5: null, get object () { return this[5]; },
  76              set object (x) { return this[5] = x; },
  77     6: null, get document () { return this[6]; },
  78              set document (x) { return this[6] = x; },
  79     7: null, get subdocument () { return this[7]; },
  80              set subdocument (x) { return this[7] = x; },
  81     9: null, get xbl () { return this[9]; },
  82              set xbl (x) { return this[9] = x; },
  83     10: null, get ping () { return this[10]; },
  84               set ping (x) { return this[10] = x; },
  85     11: null, get xmlhttprequest () { return this[11]; },
  86               set xmlhttprequest (x) { return this[11] = x; },
  87     12: null, get object_subrequest () { return this[12]; },
  88               set object_subrequest (x) { return this[12] = x; },
  89     13: null, get dtd () { return this[13]; },
  90               set dtd (x) { return this[13] = x; },
  91     14: null, get font () { return this[14]; },
  92               set font (x) { return this[14] = x; },
  93     15: null, get media () { return this[15]; },
  94               set media (x) { return this[15] = x; }
  95 };
  96
  97 /**
  98  * content_policy_bytype is a function for content_policy_hook, which uses
  99  * content_type as the primary key in determining the policy for requests.
 100  * its configuration is in content_policy_bytype_table.
 101  */
 102 function content_policy_bytype (content_type, content_location,
 103                                 request_origin, context, mime_type_guess,
 104                                 extra) {
 105     var rules = content_policy_bytype_table[content_type];
 106     if (rules)
 107         return rules(content_type, content_location,
 108                      request_origin, context, mime_type_guess,
 109                      extra);
 110     return null;
 111 }
 112
 113 provide("content-policy");