pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/components/DirectoryProvider.js

@@ -0,0 +1,214 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+
+Cu.import("resource://gre/modules/AppConstants.jsm");
+Cu.import("resource://gre/modules/FileUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "JNI", "resource://gre/modules/JNI.jsm");
+
+// -----------------------------------------------------------------------
+// Directory Provider for special browser folders and files
+// -----------------------------------------------------------------------
+
+const NS_APP_CACHE_PARENT_DIR = "cachePDir";
+const NS_APP_SEARCH_DIR       = "SrchPlugns";
+const NS_APP_SEARCH_DIR_LIST  = "SrchPluginsDL";
+const NS_APP_DISTRIBUTION_SEARCH_DIR_LIST = "SrchPluginsDistDL";
+const NS_APP_USER_SEARCH_DIR  = "UsrSrchPlugns";
+const NS_XPCOM_CURRENT_PROCESS_DIR = "XCurProcD";
+const XRE_APP_DISTRIBUTION_DIR = "XREAppDist";
+const XRE_UPDATE_ROOT_DIR     = "UpdRootD";
+const ENVVAR_UPDATE_DIR       = "UPDATES_DIRECTORY";
+const WEBAPPS_DIR             = "webappsDir";
+
+const SYSTEM_DIST_PATH = `/system/${AppConstants.ANDROID_PACKAGE_NAME}/distribution`;
+
+function DirectoryProvider() {}
+
+DirectoryProvider.prototype = {
+  classID: Components.ID("{ef0f7a87-c1ee-45a8-8d67-26f586e46a4b}"),
+
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIDirectoryServiceProvider,
+                                         Ci.nsIDirectoryServiceProvider2]),
+
+  getFile: function(prop, persistent) {
+    if (prop == NS_APP_CACHE_PARENT_DIR) {
+      let dirsvc = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties);
+      let profile = dirsvc.get("ProfD", Ci.nsIFile);
+      return profile;
+    } else if (prop == WEBAPPS_DIR) {
+      // returns the folder that should hold the webapps database file
+      // For fennec we will store that in the root profile folder so that all
+      // webapps can easily access it
+      let dirsvc = Cc["@mozilla.org/file/directory_service;1"].getService(Ci.nsIProperties);
+      let profile = dirsvc.get("ProfD", Ci.nsIFile);
+      return profile.parent;
+    } else if (prop == XRE_APP_DISTRIBUTION_DIR) {
+      let distributionDirectories =  this._getDistributionDirectories();
+      for (let i = 0; i < distributionDirectories.length; i++) {
+        if (distributionDirectories[i].exists()) {
+          return distributionDirectories[i];
+        }
+      }
+      // Fallback: Return default data distribution directory
+      return FileUtils.getDir(NS_XPCOM_CURRENT_PROCESS_DIR, ["distribution"], false);
+    } else if (prop == XRE_UPDATE_ROOT_DIR) {
+      let env = Cc["@mozilla.org/process/environment;1"].getService(Ci.nsIEnvironment);
+      if (env.exists(ENVVAR_UPDATE_DIR)) {
+        let path = env.get(ENVVAR_UPDATE_DIR);
+        if (path) {
+          return new FileUtils.File(path);
+        }
+      }
+      return new FileUtils.File(env.get("DOWNLOADS_DIRECTORY"));
+    }
+
+    // We are retuning null to show failure instead for throwing an error. The
+    // interface is called quite a bit and throwing an error is noisy. Returning
+    // null works with the way the interface is called [see bug 529077]
+    return null;
+  },
+
+  /**
+   * Appends the distribution-specific search engine directories to the array.
+   * The distribution directory structure is as follows:
+   *
+   * \- distribution/
+   *    \- searchplugins/
+   *       |- common/
+   *       \- locale/
+   *          |- <locale 1>/
+   *          ...
+   *          \- <locale N>/
+   *
+   * Common engines are loaded for all locales. If there is no locale directory for
+   * the current locale, there is a pref: "distribution.searchplugins.defaultLocale",
+   * which specifies a default locale to use.
+   */
+  _appendDistroSearchDirs: function(array) {
+    let distro = this.getFile(XRE_APP_DISTRIBUTION_DIR);
+    if (!distro.exists())
+      return;
+
+    let searchPlugins = distro.clone();
+    searchPlugins.append("searchplugins");
+    if (!searchPlugins.exists())
+      return;
+
+    let commonPlugins = searchPlugins.clone();
+    commonPlugins.append("common");
+    if (commonPlugins.exists())
+      array.push(commonPlugins);
+
+    let localePlugins = searchPlugins.clone();
+    localePlugins.append("locale");
+    if (!localePlugins.exists())
+      return;
+
+    let curLocale = "";
+    try {
+      curLocale = Services.prefs.getComplexValue("general.useragent.locale", Ci.nsIPrefLocalizedString).data;
+    } catch (e) {
+      try {
+        curLocale = Services.prefs.getCharPref("general.useragent.locale");
+      } catch (ee) {
+      }
+    }
+
+    if (curLocale) {
+      let curLocalePlugins = localePlugins.clone();
+      curLocalePlugins.append(curLocale);
+      if (curLocalePlugins.exists()) {
+        array.push(curLocalePlugins);
+        return;
+      }
+    }
+
+    // We didn't append the locale dir - try the default one.
+    try {
+      let defLocale = Services.prefs.getCharPref("distribution.searchplugins.defaultLocale");
+      let defLocalePlugins = localePlugins.clone();
+      defLocalePlugins.append(defLocale);
+      if (defLocalePlugins.exists())
+        array.push(defLocalePlugins);
+    } catch(e) {
+    }
+  },
+
+  getFiles: function(prop) {
+    if (prop != NS_APP_SEARCH_DIR_LIST &&
+        prop != NS_APP_DISTRIBUTION_SEARCH_DIR_LIST)
+      return null;
+
+    let result = [];
+
+    if (prop == NS_APP_DISTRIBUTION_SEARCH_DIR_LIST) {
+      this._appendDistroSearchDirs(result);
+    }
+    else {
+      /**
+       * We want to preserve the following order, since the search service
+       * loads engines in first-loaded-wins order.
+       *   - distro search plugin locations (loaded separately by the search
+       *     service)
+       *   - user search plugin locations (profile)
+       *   - app search plugin location (shipped engines)
+       */
+      let appUserSearchDir = FileUtils.getDir(NS_APP_USER_SEARCH_DIR, [], false);
+      if (appUserSearchDir.exists())
+        result.push(appUserSearchDir);
+
+      let appSearchDir = FileUtils.getDir(NS_APP_SEARCH_DIR, [], false);
+      if (appSearchDir.exists())
+        result.push(appSearchDir);
+    }
+
+    return {
+      QueryInterface: XPCOMUtils.generateQI([Ci.nsISimpleEnumerator]),
+      hasMoreElements: function() {
+        return result.length > 0;
+      },
+      getNext: function() {
+        return result.shift();
+      }
+    };
+  },
+
+  _getDistributionDirectories: function() {
+    let directories = [];
+    let jenv = null;
+
+    try {
+      jenv = JNI.GetForThread();
+
+      let jDistribution = JNI.LoadClass(jenv, "org.mozilla.gecko.distribution.Distribution", {
+        static_methods: [
+          { name: "getDistributionDirectories", sig: "()[Ljava/lang/String;" }
+        ],
+      });
+
+      let jDirectories = jDistribution.getDistributionDirectories();
+
+      for (let i = 0; i < jDirectories.length; i++) {
+        directories.push(new FileUtils.File(
+          JNI.ReadString(jenv, jDirectories.get(i))
+        ));
+      }
+    } finally {
+      if (jenv) {
+        JNI.UnloadClasses(jenv);
+      }
+    }
+
+    return directories;
+  }
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([DirectoryProvider]);