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"use strict";
isGlobalModule = true;
var INFO =
["plugin", { name: "http-headers",
version: "0.6",
href: "http://dactyl.sf.net/pentadactyl/plugins#http-headers-plugin",
summary: "HTTP header info",
xmlns: "dactyl" },
["author", { email: "maglione.k@gmail.com" },
"Kris Maglione"],
["license", { href: "http://opensource.org/licenses/mit-license.php" },
"MIT"],
["project", { name: "Pentadactyl", "min-version": "1.0" }],
["p", {},
"Adds request and response headers to the <ex>:pageinfo</ex> ",
"command, with the keys ", ["em", {}, "h"], " and ", ["em", {}, "H"], " respectively. ",
"See also ", ["o", {}, "pageinfo"], "."],
["example", {}, ["ex", {}, ":pageinfo hH"]]];
var { Buffer } = require("buffer");
var Controller = Class("Controller", XPCOM(Ci.nsIController), {
init: function (command, data) {
this.command = command;
this.update(data);
},
get wrappedJSObject() this,
supportsCommand: function (cmd) cmd === this.command
});
var HttpObserver = Class("HttpObserver",
XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference, Ci.nsIWebProgressListener]), {
init: function init() {
util.addObserver(this);
},
cleanup: function cleanup() {
this.observe.unregister();
},
extractHeaders: function extractHeaders(request, type) {
let major = {}, minor = {};
request.QueryInterface(Ci.nsIHttpChannelInternal)["get" + type + "Version"](major, minor);
let headers = [[type.toUpperCase(), "HTTP/" + major.value + "." + minor.value]];
request["visit" + type + "Headers"]({
visitHeader: function (header, value) {
headers.push([header, value]);
}
});
return headers;
},
getHeaders: function getHeaders(win, request) {
request.QueryInterface(Ci.nsIChannel);
let headers = overlay.getData(win.document, "headers", Object);
if ("response" in headers)
return;
if (win && /^https?$/.test(request.URI.scheme)) {
if (request instanceof Ci.nsIHttpChannel)
request.QueryInterface(Ci.nsIHttpChannel);
else {
request.QueryInterface(Ci.nsIMultiPartChannel);
request.baseChannel.QueryInterface(Ci.nsIHttpChannel);
}
headers.request = this.extractHeaders(request, "Request");
headers.request[0][1] = request.requestMethod + " " +
request.URI.path + " " + headers.request[0][1];
try {
headers.response = this.extractHeaders(request, "Response");
headers.response[0][1] += " " + request.responseStatus + " " +
request.responseStatusText;
}
catch (e) {}
let controller = this.getController(win);
if (controller)
win.controllers.removeController(controller);
win.controllers.appendController(Controller("dactyl-headers", { headers: headers, url: win.document.documentURI }));
}
},
observers: {
"http-on-examine-response": util.wrapCallback(function onExamineResponse(request, data) {
request.QueryInterface(Ci.nsIChannel).QueryInterface(Ci.nsIHttpChannel).QueryInterface(Ci.nsIRequest);
if (request.loadFlags & request.LOAD_DOCUMENT_URI) {
try {
var win = request.notificationCallbacks.getInterface(Ci.nsIDOMWindow);
}
catch (e) {
return;
}
this.getHeaders(win, request);
try {
webProgress.addProgressListener(this, Ci.nsIWebProgress.NOTIFY_STATE_DOCUMENT);
}
catch (e) {}
}
})
},
onStateChange: util.wrapCallback(function(webProgress, request, stateFlags, status) {
if ((stateFlags & this.STATE_START) && (stateFlags & this.STATE_IS_DOCUMENT))
this.getHeaders(webProgress.DOMWindow, request);
else if ((stateFlags & this.STATE_STOP) && (stateFlags & this.STATE_IS_DOCUMENT)) {
this.getHeaders(webProgress.DOMWindow, request);
try {
webProgress.removeProgressListener(this);
} catch (e) {}
}
}),
getController: function getController(win) {
for (let i of util.range(0, win.controllers.getControllerCount())) {
let controller = win.controllers.getControllerAt(i);
if (controller.supportsCommand("dactyl-headers") && controller.wrappedJSObject instanceof Controller)
return controller.wrappedJSObject;
}
}
});
let observer = HttpObserver();
let onUnload = observer.closure.cleanup;
function iterHeaders(buffer, type) {
let win = buffer.focusedFrame;
let store = win.document[overlay.id];
if (!store || !store.headers)
store = observer.getController(win);
if (store)
for (let [k, v] of values(store.headers[type] || []))
yield [k, v];
}
iter({ h: "Request", H: "Response" }).forEach(function ([key, name])
Buffer.addPageInfoSection(key, name + " Headers", function (verbose) {
if (verbose)
return iterHeaders(this, name.toLowerCase())
}));
/* vim:se sts=4 sw=4 et: */
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