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code review: make onHeadersReceive() able to cancel responses
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gorhill
parent
064ef87f73
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@ -1749,9 +1749,6 @@ var httpObserver = {
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ACCEPT: Components.results.NS_SUCCEEDED,
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// Request types:
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// https://developer.mozilla.org/en-US/docs/Mozilla/Tech/XPCOM/Reference/Interface/nsIContentPolicy#Constants
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MAIN_FRAME: Ci.nsIContentPolicy.TYPE_DOCUMENT,
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VALID_CSP_TARGETS: 1 << Ci.nsIContentPolicy.TYPE_DOCUMENT |
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1 << Ci.nsIContentPolicy.TYPE_SUBDOCUMENT,
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typeMap: {
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1: 'other',
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2: 'script',
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@ -1769,6 +1766,10 @@ var httpObserver = {
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19: 'beacon',
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21: 'image'
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},
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onBeforeRequest: function(){},
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onBeforeRequestTypes: null,
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onHeadersReceived: function(){},
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onHeadersReceivedTypes: null,
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get componentRegistrar() {
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return Components.manager.QueryInterface(Ci.nsIComponentRegistrar);
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@ -1935,14 +1936,12 @@ var httpObserver = {
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},
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handleRequest: function(channel, URI, details) {
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var onBeforeRequest = vAPI.net.onBeforeRequest;
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var type = this.typeMap[details.rawtype] || 'other';
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if ( onBeforeRequest.types && onBeforeRequest.types.has(type) === false ) {
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if ( this.onBeforeRequestTypes && this.onBeforeRequestTypes.has(type) === false ) {
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return false;
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}
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var result = onBeforeRequest.callback({
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var result = this.onBeforeRequest({
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frameId: details.frameId,
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hostname: URI.asciiHost,
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parentFrameId: details.parentFrameId,
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@ -1963,65 +1962,85 @@ var httpObserver = {
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return false;
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},
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getResponseHeader: function(channel, name) {
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var value;
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try {
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value = channel.getResponseHeader(name);
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} catch (ex) {
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}
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return value;
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},
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handleResponseHeaders: function(channel, URI, channelData) {
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var type = this.typeMap[channelData[4]] || 'other';
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if ( this.onHeadersReceivedTypes && this.onHeadersReceivedTypes.has(type) === false ) {
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return;
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}
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// 'Content-Security-Policy' MUST come last in the array. Need to
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// revised this eventually.
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var responseHeaders = [];
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var value = this.getResponseHeader(channel, 'Content-Security-Policy');
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if ( value !== undefined ) {
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responseHeaders.push({ name: 'Content-Security-Policy', value: value });
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}
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var result = this.onHeadersReceived({
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hostname: URI.asciiHost,
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parentFrameId: channelData[1],
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responseHeaders: responseHeaders,
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tabId: channelData[3],
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type: this.typeMap[channelData[4]] || 'other',
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url: URI.asciiSpec
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});
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if ( !result ) {
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return;
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}
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if ( result.cancel ) {
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channel.cancel(this.ABORT);
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return;
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}
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if ( result.responseHeaders ) {
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channel.setResponseHeader(
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'Content-Security-Policy',
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result.responseHeaders.pop().value,
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true
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);
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return;
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}
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},
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observe: function(channel, topic) {
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if ( channel instanceof Ci.nsIHttpChannel === false ) {
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return;
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}
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var URI = channel.URI;
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var channelData, result;
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if ( topic === 'http-on-examine-response' ) {
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if ( !(channel instanceof Ci.nsIWritablePropertyBag) ) {
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if ( channel instanceof Ci.nsIWritablePropertyBag === false ) {
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return;
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}
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var channelData;
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try {
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channelData = channel.getProperty(this.REQDATAKEY);
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} catch (ex) {
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return;
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}
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if ( !channelData ) {
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return;
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}
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if ( (1 << channelData[4] & this.VALID_CSP_TARGETS) === 0 ) {
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return;
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}
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topic = 'Content-Security-Policy';
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try {
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result = channel.getResponseHeader(topic);
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} catch (ex) {
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result = null;
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}
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result = vAPI.net.onHeadersReceived.callback({
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hostname: URI.asciiHost,
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parentFrameId: channelData[1],
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responseHeaders: result ? [{name: topic, value: result}] : [],
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tabId: channelData[3],
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type: this.typeMap[channelData[4]] || 'other',
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url: URI.asciiSpec
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});
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if ( result ) {
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channel.setResponseHeader(
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topic,
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result.responseHeaders.pop().value,
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true
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);
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}
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this.handleResponseHeaders(channel, URI, channelData);
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return;
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}
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// http-on-opening-request
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//console.log('http-on-opening-request:', URI.spec);
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var pendingRequest = this.lookupPendingRequest(URI.spec);
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var rawtype = channel.loadInfo && channel.loadInfo.contentPolicyType || 1;
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@ -2108,6 +2127,7 @@ var httpObserver = {
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}
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};
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/******************************************************************************/
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/******************************************************************************/
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vAPI.net = {};
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@ -2118,9 +2138,19 @@ vAPI.net.registerListeners = function() {
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// Since it's not used
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this.onBeforeSendHeaders = null;
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this.onBeforeRequest.types = this.onBeforeRequest.types ?
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new Set(this.onBeforeRequest.types) :
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null;
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if ( typeof this.onBeforeRequest.callback === 'function' ) {
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httpObserver.onBeforeRequest = this.onBeforeRequest.callback;
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httpObserver.onBeforeRequestTypes = this.onBeforeRequest.types ?
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new Set(this.onBeforeRequest.types) :
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null;
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}
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if ( typeof this.onHeadersReceived.callback === 'function' ) {
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httpObserver.onHeadersReceived = this.onHeadersReceived.callback;
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httpObserver.onHeadersReceivedTypes = this.onHeadersReceived.types ?
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new Set(this.onHeadersReceived.types) :
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null;
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}
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var shouldBlockPopup = function(details) {
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var sourceTabId = null;
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@ -331,28 +331,33 @@ var onHeadersReceived = function(details) {
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return;
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}
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// Special handling for root document.
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if ( details.type === 'main_frame' ) {
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var requestType = details.type;
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if ( requestType === 'main_frame' ) {
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return onRootFrameHeadersReceived(details);
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}
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// Just in case...
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if ( details.type !== 'sub_frame' ) {
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return;
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if ( requestType === 'sub_frame' ) {
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return onFrameHeadersReceived(details);
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}
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};
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// If we reach this point, we are dealing with a sub_frame
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/******************************************************************************/
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var onRootFrameHeadersReceived = function(details) {
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var µb = µBlock;
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var tabId = details.tabId;
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µb.tabContextManager.push(tabId, details.url);
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// Lookup the page store associated with this tab id.
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var µb = µBlock;
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var pageStore = µb.pageStoreFromTabId(tabId);
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if ( !pageStore ) {
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return;
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pageStore = µb.bindTabToPageStats(tabId, 'beforeRequest');
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}
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// I can't think of how pageStore could be null at this point.
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// Frame id of frame request is their own id, while the request is made
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// in the context of the parent.
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var context = pageStore.createContextFromFrameId(details.parentFrameId);
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var context = pageStore.createContextFromPage();
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context.requestURL = details.url;
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context.requestHostname = details.hostname;
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context.requestType = 'inline-script';
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@ -385,20 +390,19 @@ var onHeadersReceived = function(details) {
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/******************************************************************************/
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var onRootFrameHeadersReceived = function(details) {
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var tabId = details.tabId;
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var onFrameHeadersReceived = function(details) {
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var µb = µBlock;
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µb.tabContextManager.push(tabId, details.url);
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var tabId = details.tabId;
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// Lookup the page store associated with this tab id.
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var pageStore = µb.pageStoreFromTabId(tabId);
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if ( !pageStore ) {
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pageStore = µb.bindTabToPageStats(tabId, 'beforeRequest');
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return;
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}
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// I can't think of how pageStore could be null at this point.
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var context = pageStore.createContextFromPage();
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// Frame id of frame request is their own id, while the request is made
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// in the context of the parent.
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var context = pageStore.createContextFromFrameId(details.parentFrameId);
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context.requestURL = details.url;
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context.requestHostname = details.hostname;
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context.requestType = 'inline-script';
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