diff options
Diffstat (limited to 'toolkit/mozapps/webextensions/ChromeManifestParser.jsm')
-rw-r--r-- | toolkit/mozapps/webextensions/ChromeManifestParser.jsm | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/toolkit/mozapps/webextensions/ChromeManifestParser.jsm b/toolkit/mozapps/webextensions/ChromeManifestParser.jsm deleted file mode 100644 index 63f1db785..000000000 --- a/toolkit/mozapps/webextensions/ChromeManifestParser.jsm +++ /dev/null @@ -1,157 +0,0 @@ -/* 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/. */ - -"use strict"; - -this.EXPORTED_SYMBOLS = ["ChromeManifestParser"]; - -const Cc = Components.classes; -const Ci = Components.interfaces; -const Cr = Components.results; -const Cu = Components.utils; - -Cu.import("resource://gre/modules/Services.jsm"); -Cu.import("resource://gre/modules/NetUtil.jsm"); - -const MSG_JAR_FLUSH = "AddonJarFlush"; - - -/** - * Sends local and remote notifications to flush a JAR file cache entry - * - * @param aJarFile - * The ZIP/XPI/JAR file as a nsIFile - */ -function flushJarCache(aJarFile) { - Services.obs.notifyObservers(aJarFile, "flush-cache-entry", null); - Cc["@mozilla.org/globalmessagemanager;1"].getService(Ci.nsIMessageBroadcaster) - .broadcastAsyncMessage(MSG_JAR_FLUSH, aJarFile.path); -} - - -/** - * Parses chrome manifest files. - */ -this.ChromeManifestParser = { - - /** - * Reads and parses a chrome manifest file located at a specified URI, and all - * secondary manifests it references. - * - * @param aURI - * A nsIURI pointing to a chrome manifest. - * Typically a file: or jar: URI. - * @return Array of objects describing each manifest instruction, in the form: - * { type: instruction-type, baseURI: string-uri, args: [arguments] } - **/ - parseSync: function(aURI) { - function parseLine(aLine) { - let line = aLine.trim(); - if (line.length == 0 || line.charAt(0) == '#') - return; - let tokens = line.split(/\s+/); - let type = tokens.shift(); - if (type == "manifest") { - let uri = NetUtil.newURI(tokens.shift(), null, aURI); - data = data.concat(this.parseSync(uri)); - } else { - data.push({type: type, baseURI: baseURI, args: tokens}); - } - } - - let contents = ""; - try { - if (aURI.scheme == "jar") - contents = this._readFromJar(aURI); - else - contents = this._readFromFile(aURI); - } catch (e) { - // Silently fail. - } - - if (!contents) - return []; - - let baseURI = NetUtil.newURI(".", null, aURI).spec; - - let data = []; - let lines = contents.split("\n"); - lines.forEach(parseLine.bind(this)); - return data; - }, - - _readFromJar: function(aURI) { - let data = ""; - let entries = []; - let readers = []; - - try { - // Deconstrict URI, which can be nested jar: URIs. - let uri = aURI.clone(); - while (uri instanceof Ci.nsIJARURI) { - entries.push(uri.JAREntry); - uri = uri.JARFile; - } - - // Open the base jar. - let reader = Cc["@mozilla.org/libjar/zip-reader;1"]. - createInstance(Ci.nsIZipReader); - reader.open(uri.QueryInterface(Ci.nsIFileURL).file); - readers.push(reader); - - // Open the nested jars. - for (let i = entries.length - 1; i > 0; i--) { - let innerReader = Cc["@mozilla.org/libjar/zip-reader;1"]. - createInstance(Ci.nsIZipReader); - innerReader.openInner(reader, entries[i]); - readers.push(innerReader); - reader = innerReader; - } - - // First entry is the actual file we want to read. - let zis = reader.getInputStream(entries[0]); - data = NetUtil.readInputStreamToString(zis, zis.available()); - } - finally { - // Close readers in reverse order. - for (let i = readers.length - 1; i >= 0; i--) { - readers[i].close(); - flushJarCache(readers[i].file); - } - } - - return data; - }, - - _readFromFile: function(aURI) { - let file = aURI.QueryInterface(Ci.nsIFileURL).file; - if (!file.exists() || !file.isFile()) - return ""; - - let data = ""; - let fis = Cc["@mozilla.org/network/file-input-stream;1"]. - createInstance(Ci.nsIFileInputStream); - try { - fis.init(file, -1, -1, false); - data = NetUtil.readInputStreamToString(fis, fis.available()); - } finally { - fis.close(); - } - return data; - }, - - /** - * Detects if there were any instructions of a specified type in a given - * chrome manifest. - * - * @param aManifest - * Manifest data, as returned by ChromeManifestParser.parseSync(). - * @param aType - * Instruction type to filter by. - * @return True if any matching instructions were found in the manifest. - */ - hasType: function(aManifest, aType) { - return aManifest.some(entry => entry.type == aType); - } -}; |