mirror of
https://github.com/mozilla/gecko-dev.git
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743 lines
21 KiB
JavaScript
743 lines
21 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MERGED_COMPARTMENT
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const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
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this.EXPORTED_SYMBOLS = [
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"RESTRequest",
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"RESTResponse",
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"TokenAuthenticatedRESTRequest",
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];
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#endif
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Cu.import("resource://gre/modules/Preferences.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Log.jsm");
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Cu.import("resource://services-common/utils.js");
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XPCOMUtils.defineLazyModuleGetter(this, "CryptoUtils",
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"resource://services-crypto/utils.js");
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const Prefs = new Preferences("services.common.rest.");
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/**
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* Single use HTTP requests to RESTish resources.
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*
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* @param uri
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* URI for the request. This can be an nsIURI object or a string
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* that can be used to create one. An exception will be thrown if
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* the string is not a valid URI.
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*
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* Examples:
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*
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* (1) Quick GET request:
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*
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* new RESTRequest("http://server/rest/resource").get(function (error) {
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* if (error) {
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* // Deal with a network error.
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* processNetworkErrorCode(error.result);
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* return;
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* }
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* if (!this.response.success) {
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* // Bail out if we're not getting an HTTP 2xx code.
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* processHTTPError(this.response.status);
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* return;
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* }
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* processData(this.response.body);
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* });
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*
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* (2) Quick PUT request (non-string data is automatically JSONified)
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*
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* new RESTRequest("http://server/rest/resource").put(data, function (error) {
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* ...
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* });
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*
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* (3) Streaming GET
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*
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* let request = new RESTRequest("http://server/rest/resource");
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* request.setHeader("Accept", "application/newlines");
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* request.onComplete = function (error) {
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* if (error) {
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* // Deal with a network error.
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* processNetworkErrorCode(error.result);
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* return;
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* }
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* callbackAfterRequestHasCompleted()
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* });
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* request.onProgress = function () {
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* if (!this.response.success) {
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* // Bail out if we're not getting an HTTP 2xx code.
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* return;
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* }
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* // Process body data and reset it so we don't process the same data twice.
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* processIncrementalData(this.response.body);
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* this.response.body = "";
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* });
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* request.get();
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*/
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this.RESTRequest = function RESTRequest(uri) {
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this.status = this.NOT_SENT;
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// If we don't have an nsIURI object yet, make one. This will throw if
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// 'uri' isn't a valid URI string.
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if (!(uri instanceof Ci.nsIURI)) {
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uri = Services.io.newURI(uri, null, null);
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}
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this.uri = uri;
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this._headers = {};
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this._log = Log.repository.getLogger(this._logName);
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this._log.level =
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Log.Level[Prefs.get("log.logger.rest.request")];
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}
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RESTRequest.prototype = {
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_logName: "Services.Common.RESTRequest",
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QueryInterface: XPCOMUtils.generateQI([
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Ci.nsIBadCertListener2,
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Ci.nsIInterfaceRequestor,
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Ci.nsIChannelEventSink
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]),
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/*** Public API: ***/
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/**
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* URI for the request (an nsIURI object).
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*/
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uri: null,
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/**
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* HTTP method (e.g. "GET")
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*/
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method: null,
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/**
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* RESTResponse object
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*/
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response: null,
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/**
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* nsIRequest load flags. Don't do any caching by default. Don't send user
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* cookies and such over the wire (Bug 644734).
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*/
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loadFlags: Ci.nsIRequest.LOAD_BYPASS_CACHE | Ci.nsIRequest.INHIBIT_CACHING | Ci.nsIRequest.LOAD_ANONYMOUS,
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/**
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* nsIHttpChannel
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*/
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channel: null,
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/**
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* Flag to indicate the status of the request.
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*
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* One of NOT_SENT, SENT, IN_PROGRESS, COMPLETED, ABORTED.
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*/
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status: null,
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NOT_SENT: 0,
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SENT: 1,
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IN_PROGRESS: 2,
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COMPLETED: 4,
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ABORTED: 8,
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/**
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* HTTP status text of response
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*/
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statusText: null,
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/**
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* Request timeout (in seconds, though decimal values can be used for
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* up to millisecond granularity.)
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*
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* 0 for no timeout.
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*/
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timeout: null,
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/**
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* The encoding with which the response to this request must be treated.
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* If a charset parameter is available in the HTTP Content-Type header for
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* this response, that will always be used, and this value is ignored. We
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* default to UTF-8 because that is a reasonable default.
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*/
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charset: "utf-8",
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/**
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* Called when the request has been completed, including failures and
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* timeouts.
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*
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* @param error
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* Error that occurred while making the request, null if there
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* was no error.
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*/
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onComplete: function onComplete(error) {
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},
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/**
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* Called whenever data is being received on the channel. If this throws an
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* exception, the request is aborted and the exception is passed as the
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* error to onComplete().
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*/
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onProgress: function onProgress() {
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},
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/**
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* Set a request header.
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*/
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setHeader: function setHeader(name, value) {
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this._headers[name.toLowerCase()] = value;
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},
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/**
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* Perform an HTTP GET.
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*
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* @param onComplete
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* Short-circuit way to set the 'onComplete' method. Optional.
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* @param onProgress
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* Short-circuit way to set the 'onProgress' method. Optional.
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*
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* @return the request object.
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*/
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get: function get(onComplete, onProgress) {
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return this.dispatch("GET", null, onComplete, onProgress);
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},
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/**
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* Perform an HTTP PATCH.
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*
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* @param data
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* Data to be used as the request body. If this isn't a string
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* it will be JSONified automatically.
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* @param onComplete
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* Short-circuit way to set the 'onComplete' method. Optional.
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* @param onProgress
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* Short-circuit way to set the 'onProgress' method. Optional.
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*
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* @return the request object.
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*/
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patch: function patch(data, onComplete, onProgress) {
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return this.dispatch("PATCH", data, onComplete, onProgress);
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},
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/**
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* Perform an HTTP PUT.
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*
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* @param data
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* Data to be used as the request body. If this isn't a string
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* it will be JSONified automatically.
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* @param onComplete
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* Short-circuit way to set the 'onComplete' method. Optional.
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* @param onProgress
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* Short-circuit way to set the 'onProgress' method. Optional.
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*
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* @return the request object.
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*/
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put: function put(data, onComplete, onProgress) {
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return this.dispatch("PUT", data, onComplete, onProgress);
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},
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/**
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* Perform an HTTP POST.
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*
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* @param data
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* Data to be used as the request body. If this isn't a string
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* it will be JSONified automatically.
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* @param onComplete
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* Short-circuit way to set the 'onComplete' method. Optional.
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* @param onProgress
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* Short-circuit way to set the 'onProgress' method. Optional.
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*
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* @return the request object.
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*/
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post: function post(data, onComplete, onProgress) {
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return this.dispatch("POST", data, onComplete, onProgress);
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},
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/**
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* Perform an HTTP DELETE.
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*
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* @param onComplete
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* Short-circuit way to set the 'onComplete' method. Optional.
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* @param onProgress
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* Short-circuit way to set the 'onProgress' method. Optional.
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*
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* @return the request object.
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*/
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delete: function delete_(onComplete, onProgress) {
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return this.dispatch("DELETE", null, onComplete, onProgress);
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},
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/**
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* Abort an active request.
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*/
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abort: function abort() {
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if (this.status != this.SENT && this.status != this.IN_PROGRESS) {
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throw "Can only abort a request that has been sent.";
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}
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this.status = this.ABORTED;
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this.channel.cancel(Cr.NS_BINDING_ABORTED);
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if (this.timeoutTimer) {
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// Clear the abort timer now that the channel is done.
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this.timeoutTimer.clear();
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}
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},
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/*** Implementation stuff ***/
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dispatch: function dispatch(method, data, onComplete, onProgress) {
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if (this.status != this.NOT_SENT) {
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throw "Request has already been sent!";
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}
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this.method = method;
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if (onComplete) {
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this.onComplete = onComplete;
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}
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if (onProgress) {
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this.onProgress = onProgress;
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}
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// Create and initialize HTTP channel.
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let channel = Services.io.newChannelFromURI(this.uri, null, null)
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.QueryInterface(Ci.nsIRequest)
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.QueryInterface(Ci.nsIHttpChannel);
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this.channel = channel;
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channel.loadFlags |= this.loadFlags;
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channel.notificationCallbacks = this;
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// Set request headers.
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let headers = this._headers;
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for (let key in headers) {
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if (key == 'authorization') {
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this._log.trace("HTTP Header " + key + ": ***** (suppressed)");
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} else {
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this._log.trace("HTTP Header " + key + ": " + headers[key]);
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}
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channel.setRequestHeader(key, headers[key], false);
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}
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// Set HTTP request body.
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if (method == "PUT" || method == "POST" || method == "PATCH") {
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// Convert non-string bodies into JSON.
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if (typeof data != "string") {
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data = JSON.stringify(data);
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}
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this._log.debug(method + " Length: " + data.length);
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if (this._log.level <= Log.Level.Trace) {
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this._log.trace(method + " Body: " + data);
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}
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let stream = Cc["@mozilla.org/io/string-input-stream;1"]
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.createInstance(Ci.nsIStringInputStream);
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stream.setData(data, data.length);
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let type = headers["content-type"] || "text/plain";
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channel.QueryInterface(Ci.nsIUploadChannel);
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channel.setUploadStream(stream, type, data.length);
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}
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// We must set this after setting the upload stream, otherwise it
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// will always be 'PUT'. Yeah, I know.
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channel.requestMethod = method;
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// Before opening the channel, set the charset that serves as a hint
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// as to what the response might be encoded as.
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channel.contentCharset = this.charset;
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// Blast off!
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try {
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channel.asyncOpen(this, null);
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} catch (ex) {
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// asyncOpen can throw in a bunch of cases -- e.g., a forbidden port.
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this._log.warn("Caught an error in asyncOpen: " + CommonUtils.exceptionStr(ex));
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CommonUtils.nextTick(onComplete.bind(this, ex));
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}
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this.status = this.SENT;
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this.delayTimeout();
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return this;
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},
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/**
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* Create or push back the abort timer that kills this request.
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*/
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delayTimeout: function delayTimeout() {
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if (this.timeout) {
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CommonUtils.namedTimer(this.abortTimeout, this.timeout * 1000, this,
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"timeoutTimer");
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}
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},
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/**
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* Abort the request based on a timeout.
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*/
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abortTimeout: function abortTimeout() {
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this.abort();
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let error = Components.Exception("Aborting due to channel inactivity.",
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Cr.NS_ERROR_NET_TIMEOUT);
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if (!this.onComplete) {
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this._log.error("Unexpected error: onComplete not defined in " +
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"abortTimeout.");
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return;
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}
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this.onComplete(error);
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},
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/*** nsIStreamListener ***/
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onStartRequest: function onStartRequest(channel) {
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if (this.status == this.ABORTED) {
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this._log.trace("Not proceeding with onStartRequest, request was aborted.");
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return;
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}
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try {
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channel.QueryInterface(Ci.nsIHttpChannel);
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} catch (ex) {
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this._log.error("Unexpected error: channel is not a nsIHttpChannel!");
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this.status = this.ABORTED;
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channel.cancel(Cr.NS_BINDING_ABORTED);
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return;
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}
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this.status = this.IN_PROGRESS;
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this._log.trace("onStartRequest: " + channel.requestMethod + " " +
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channel.URI.spec);
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// Create a response object and fill it with some data.
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let response = this.response = new RESTResponse();
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response.request = this;
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response.body = "";
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this.delayTimeout();
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},
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onStopRequest: function onStopRequest(channel, context, statusCode) {
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if (this.timeoutTimer) {
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// Clear the abort timer now that the channel is done.
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this.timeoutTimer.clear();
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}
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// We don't want to do anything for a request that's already been aborted.
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if (this.status == this.ABORTED) {
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this._log.trace("Not proceeding with onStopRequest, request was aborted.");
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return;
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}
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try {
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channel.QueryInterface(Ci.nsIHttpChannel);
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} catch (ex) {
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this._log.error("Unexpected error: channel not nsIHttpChannel!");
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this.status = this.ABORTED;
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return;
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}
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this.status = this.COMPLETED;
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let statusSuccess = Components.isSuccessCode(statusCode);
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let uri = channel && channel.URI && channel.URI.spec || "<unknown>";
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this._log.trace("Channel for " + channel.requestMethod + " " + uri +
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" returned status code " + statusCode);
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if (!this.onComplete) {
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this._log.error("Unexpected error: onComplete not defined in " +
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"abortRequest.");
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this.onProgress = null;
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return;
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}
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// Throw the failure code and stop execution. Use Components.Exception()
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// instead of Error() so the exception is QI-able and can be passed across
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// XPCOM borders while preserving the status code.
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if (!statusSuccess) {
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let message = Components.Exception("", statusCode).name;
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let error = Components.Exception(message, statusCode);
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this.onComplete(error);
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this.onComplete = this.onProgress = null;
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return;
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}
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this._log.debug(this.method + " " + uri + " " + this.response.status);
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// Additionally give the full response body when Trace logging.
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if (this._log.level <= Log.Level.Trace) {
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this._log.trace(this.method + " body: " + this.response.body);
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}
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delete this._inputStream;
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this.onComplete(null);
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this.onComplete = this.onProgress = null;
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},
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onDataAvailable: function onDataAvailable(channel, cb, stream, off, count) {
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// We get an nsIRequest, which doesn't have contentCharset.
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try {
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channel.QueryInterface(Ci.nsIHttpChannel);
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} catch (ex) {
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this._log.error("Unexpected error: channel not nsIHttpChannel!");
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this.abort();
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if (this.onComplete) {
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this.onComplete(ex);
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}
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this.onComplete = this.onProgress = null;
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return;
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}
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if (channel.contentCharset) {
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this.response.charset = channel.contentCharset;
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if (!this._converterStream) {
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this._converterStream = Cc["@mozilla.org/intl/converter-input-stream;1"]
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.createInstance(Ci.nsIConverterInputStream);
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}
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this._converterStream.init(stream, channel.contentCharset, 0,
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this._converterStream.DEFAULT_REPLACEMENT_CHARACTER);
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try {
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let str = {};
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let num = this._converterStream.readString(count, str);
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if (num != 0) {
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this.response.body += str.value;
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}
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} catch (ex) {
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this._log.warn("Exception thrown reading " + count + " bytes from " +
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"the channel.");
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this._log.warn(CommonUtils.exceptionStr(ex));
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throw ex;
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}
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} else {
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this.response.charset = null;
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if (!this._inputStream) {
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this._inputStream = Cc["@mozilla.org/scriptableinputstream;1"]
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.createInstance(Ci.nsIScriptableInputStream);
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}
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this._inputStream.init(stream);
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this.response.body += this._inputStream.read(count);
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}
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try {
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this.onProgress();
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} catch (ex) {
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this._log.warn("Got exception calling onProgress handler, aborting " +
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this.method + " " + channel.URI.spec);
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this._log.debug("Exception: " + CommonUtils.exceptionStr(ex));
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this.abort();
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|
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if (!this.onComplete) {
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this._log.error("Unexpected error: onComplete not defined in " +
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"onDataAvailable.");
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this.onProgress = null;
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return;
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}
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|
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this.onComplete(ex);
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this.onComplete = this.onProgress = null;
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return;
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}
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|
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this.delayTimeout();
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},
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|
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/*** nsIInterfaceRequestor ***/
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|
|
|
getInterface: function(aIID) {
|
|
return this.QueryInterface(aIID);
|
|
},
|
|
|
|
/*** nsIBadCertListener2 ***/
|
|
|
|
notifyCertProblem: function notifyCertProblem(socketInfo, sslStatus, targetHost) {
|
|
this._log.warn("Invalid HTTPS certificate encountered!");
|
|
// Suppress invalid HTTPS certificate warnings in the UI.
|
|
// (The request will still fail.)
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Returns true if headers from the old channel should be
|
|
* copied to the new channel. Invoked when a channel redirect
|
|
* is in progress.
|
|
*/
|
|
shouldCopyOnRedirect: function shouldCopyOnRedirect(oldChannel, newChannel, flags) {
|
|
let isInternal = !!(flags & Ci.nsIChannelEventSink.REDIRECT_INTERNAL);
|
|
let isSameURI = newChannel.URI.equals(oldChannel.URI);
|
|
this._log.debug("Channel redirect: " + oldChannel.URI.spec + ", " +
|
|
newChannel.URI.spec + ", internal = " + isInternal);
|
|
return isInternal && isSameURI;
|
|
},
|
|
|
|
/*** nsIChannelEventSink ***/
|
|
asyncOnChannelRedirect:
|
|
function asyncOnChannelRedirect(oldChannel, newChannel, flags, callback) {
|
|
|
|
try {
|
|
newChannel.QueryInterface(Ci.nsIHttpChannel);
|
|
} catch (ex) {
|
|
this._log.error("Unexpected error: channel not nsIHttpChannel!");
|
|
callback.onRedirectVerifyCallback(Cr.NS_ERROR_NO_INTERFACE);
|
|
return;
|
|
}
|
|
|
|
// For internal redirects, copy the headers that our caller set.
|
|
try {
|
|
if (this.shouldCopyOnRedirect(oldChannel, newChannel, flags)) {
|
|
this._log.trace("Copying headers for safe internal redirect.");
|
|
for (let key in this._headers) {
|
|
newChannel.setRequestHeader(key, this._headers[key], false);
|
|
}
|
|
}
|
|
} catch (ex) {
|
|
this._log.error("Error copying headers: " + CommonUtils.exceptionStr(ex));
|
|
}
|
|
|
|
this.channel = newChannel;
|
|
|
|
// We let all redirects proceed.
|
|
callback.onRedirectVerifyCallback(Cr.NS_OK);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Response object for a RESTRequest. This will be created automatically by
|
|
* the RESTRequest.
|
|
*/
|
|
this.RESTResponse = function RESTResponse() {
|
|
this._log = Log.repository.getLogger(this._logName);
|
|
this._log.level =
|
|
Log.Level[Prefs.get("log.logger.rest.response")];
|
|
}
|
|
RESTResponse.prototype = {
|
|
|
|
_logName: "Sync.RESTResponse",
|
|
|
|
/**
|
|
* Corresponding REST request
|
|
*/
|
|
request: null,
|
|
|
|
/**
|
|
* HTTP status code
|
|
*/
|
|
get status() {
|
|
let status;
|
|
try {
|
|
status = this.request.channel.responseStatus;
|
|
} catch (ex) {
|
|
this._log.debug("Caught exception fetching HTTP status code:" +
|
|
CommonUtils.exceptionStr(ex));
|
|
return null;
|
|
}
|
|
Object.defineProperty(this, "status", {value: status});
|
|
return status;
|
|
},
|
|
|
|
/**
|
|
* HTTP status text
|
|
*/
|
|
get statusText() {
|
|
let statusText;
|
|
try {
|
|
statusText = this.request.channel.responseStatusText;
|
|
} catch (ex) {
|
|
this._log.debug("Caught exception fetching HTTP status text:" +
|
|
CommonUtils.exceptionStr(ex));
|
|
return null;
|
|
}
|
|
Object.defineProperty(this, "statusText", {value: statusText});
|
|
return statusText;
|
|
},
|
|
|
|
/**
|
|
* Boolean flag that indicates whether the HTTP status code is 2xx or not.
|
|
*/
|
|
get success() {
|
|
let success;
|
|
try {
|
|
success = this.request.channel.requestSucceeded;
|
|
} catch (ex) {
|
|
this._log.debug("Caught exception fetching HTTP success flag:" +
|
|
CommonUtils.exceptionStr(ex));
|
|
return null;
|
|
}
|
|
Object.defineProperty(this, "success", {value: success});
|
|
return success;
|
|
},
|
|
|
|
/**
|
|
* Object containing HTTP headers (keyed as lower case)
|
|
*/
|
|
get headers() {
|
|
let headers = {};
|
|
try {
|
|
this._log.trace("Processing response headers.");
|
|
let channel = this.request.channel.QueryInterface(Ci.nsIHttpChannel);
|
|
channel.visitResponseHeaders(function (header, value) {
|
|
headers[header.toLowerCase()] = value;
|
|
});
|
|
} catch (ex) {
|
|
this._log.debug("Caught exception processing response headers:" +
|
|
CommonUtils.exceptionStr(ex));
|
|
return null;
|
|
}
|
|
|
|
Object.defineProperty(this, "headers", {value: headers});
|
|
return headers;
|
|
},
|
|
|
|
/**
|
|
* HTTP body (string)
|
|
*/
|
|
body: null
|
|
|
|
};
|
|
|
|
/**
|
|
* Single use MAC authenticated HTTP requests to RESTish resources.
|
|
*
|
|
* @param uri
|
|
* URI going to the RESTRequest constructor.
|
|
* @param authToken
|
|
* (Object) An auth token of the form {id: (string), key: (string)}
|
|
* from which the MAC Authentication header for this request will be
|
|
* derived. A token as obtained from
|
|
* TokenServerClient.getTokenFromBrowserIDAssertion is accepted.
|
|
* @param extra
|
|
* (Object) Optional extra parameters. Valid keys are: nonce_bytes, ts,
|
|
* nonce, and ext. See CrytoUtils.computeHTTPMACSHA1 for information on
|
|
* the purpose of these values.
|
|
*/
|
|
this.TokenAuthenticatedRESTRequest =
|
|
function TokenAuthenticatedRESTRequest(uri, authToken, extra) {
|
|
RESTRequest.call(this, uri);
|
|
this.authToken = authToken;
|
|
this.extra = extra || {};
|
|
}
|
|
TokenAuthenticatedRESTRequest.prototype = {
|
|
__proto__: RESTRequest.prototype,
|
|
|
|
dispatch: function dispatch(method, data, onComplete, onProgress) {
|
|
let sig = CryptoUtils.computeHTTPMACSHA1(
|
|
this.authToken.id, this.authToken.key, method, this.uri, this.extra
|
|
);
|
|
|
|
this.setHeader("Authorization", sig.getHeader());
|
|
|
|
return RESTRequest.prototype.dispatch.call(
|
|
this, method, data, onComplete, onProgress
|
|
);
|
|
},
|
|
};
|