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/**
* Read count bytes from stream and return as a String object
*/
function read_stream(stream, count) {
/* assume stream has non-ASCII data */
var wrapper =
Components.classes["@mozilla.org/binaryinputstream;1"]
.createInstance(Components.interfaces.nsIBinaryInputStream);
wrapper.setInputStream(stream);
/* JS methods can be called with a maximum of 65535 arguments, and input
streams don't have to return all the data they make .available() when
asked to .read() that number of bytes. */
var data = [];
while (count > 0) {
var bytes = wrapper.readByteArray(Math.min(65535, count));
data.push(String.fromCharCode.apply(null, bytes));
count -= bytes.length;
if (bytes.length == 0)
do_throw("Nothing read from input stream!");
}
return data.join('');
}
const CL_EXPECT_FAILURE = 0x1;
const CL_EXPECT_GZIP = 0x2;
const CL_EXPECT_3S_DELAY = 0x4;
const CL_SUSPEND = 0x8;
const CL_ALLOW_UNKNOWN_CL = 0x10;
const CL_EXPECT_LATE_FAILURE = 0x20;
const CL_FROM_CACHE = 0x40; // Response must be from the cache
const CL_NOT_FROM_CACHE = 0x80; // Response must NOT be from the cache
const CL_IGNORE_CL = 0x100; // don't bother to verify the content-length
const SUSPEND_DELAY = 3000;
/**
* A stream listener that calls a callback function with a specified
* context and the received data when the channel is loaded.
*
* Signature of the closure:
* void closure(in nsIRequest request, in ACString data, in JSObject context);
*
* This listener makes sure that various parts of the channel API are
* implemented correctly and that the channel's status is a success code
* (you can pass CL_EXPECT_FAILURE or CL_EXPECT_LATE_FAILURE as flags
* to allow a failure code)
*
* Note that it also requires a valid content length on the channel and
* is thus not fully generic.
*/
function ChannelListener(closure, ctx, flags) {
this._closure = closure;
this._closurectx = ctx;
this._flags = flags;
}
ChannelListener.prototype = {
_closure: null,
_closurectx: null,
_buffer: "",
_got_onstartrequest: false,
_got_onstoprequest: false,
_contentLen: -1,
_lastEvent: 0,
QueryInterface: function(iid) {
if (iid.equals(Components.interfaces.nsIStreamListener) ||
iid.equals(Components.interfaces.nsIRequestObserver) ||
iid.equals(Components.interfaces.nsISupports))
return this;
throw Components.results.NS_ERROR_NO_INTERFACE;
},
onStartRequest: function(request, context) {
try {
if (this._got_onstartrequest)
do_throw("Got second onStartRequest event!");
this._got_onstartrequest = true;
this._lastEvent = Date.now();
request.QueryInterface(Components.interfaces.nsIChannel);
try {
this._contentLen = request.contentLength;
}
catch (ex) {
if (!(this._flags & (CL_EXPECT_FAILURE | CL_ALLOW_UNKNOWN_CL)))
do_throw("Could not get contentLength");
}
if (!request.isPending())
do_throw("request reports itself as not pending from onStartRequest!");
if (this._contentLen == -1 && !(this._flags & (CL_EXPECT_FAILURE | CL_ALLOW_UNKNOWN_CL)))
do_throw("Content length is unknown in onStartRequest!");
if ((this._flags & CL_FROM_CACHE)) {
request.QueryInterface(Ci.nsICachingChannel);
if (!request.isFromCache()) {
do_throw("Response is not from the cache (CL_FROM_CACHE)");
}
}
if ((this._flags & CL_NOT_FROM_CACHE)) {
request.QueryInterface(Ci.nsICachingChannel);
if (request.isFromCache()) {
do_throw("Response is from the cache (CL_NOT_FROM_CACHE)");
}
}
if (this._flags & CL_SUSPEND) {
request.suspend();
do_timeout(SUSPEND_DELAY, function() { request.resume(); });
}
} catch (ex) {
do_throw("Error in onStartRequest: " + ex);
}
},
onDataAvailable: function(request, context, stream, offset, count) {
try {
let current = Date.now();
if (!this._got_onstartrequest)
do_throw("onDataAvailable without onStartRequest event!");
if (this._got_onstoprequest)
do_throw("onDataAvailable after onStopRequest event!");
if (!request.isPending())
do_throw("request reports itself as not pending from onDataAvailable!");
if (this._flags & CL_EXPECT_FAILURE)
do_throw("Got data despite expecting a failure");
if (current - this._lastEvent >= SUSPEND_DELAY &&
!(this._flags & CL_EXPECT_3S_DELAY))
do_throw("Data received after significant unexpected delay");
else if (current - this._lastEvent < SUSPEND_DELAY &&
this._flags & CL_EXPECT_3S_DELAY)
do_throw("Data received sooner than expected");
else if (current - this._lastEvent >= SUSPEND_DELAY &&
this._flags & CL_EXPECT_3S_DELAY)
this._flags &= ~CL_EXPECT_3S_DELAY; // No more delays expected
this._buffer = this._buffer.concat(read_stream(stream, count));
this._lastEvent = current;
} catch (ex) {
do_throw("Error in onDataAvailable: " + ex);
}
},
onStopRequest: function(request, context, status) {
try {
var success = Components.isSuccessCode(status);
if (!this._got_onstartrequest)
do_throw("onStopRequest without onStartRequest event!");
if (this._got_onstoprequest)
do_throw("Got second onStopRequest event!");
this._got_onstoprequest = true;
if ((this._flags & (CL_EXPECT_FAILURE | CL_EXPECT_LATE_FAILURE)) && success)
do_throw("Should have failed to load URL (status is " + status.toString(16) + ")");
else if (!(this._flags & (CL_EXPECT_FAILURE | CL_EXPECT_LATE_FAILURE)) && !success)
do_throw("Failed to load URL: " + status.toString(16));
if (status != request.status)
do_throw("request.status does not match status arg to onStopRequest!");
if (request.isPending())
do_throw("request reports itself as pending from onStopRequest!");
if (!(this._flags & (CL_EXPECT_FAILURE | CL_EXPECT_LATE_FAILURE | CL_IGNORE_CL)) &&
!(this._flags & CL_EXPECT_GZIP) &&
this._contentLen != -1)
do_check_eq(this._buffer.length, this._contentLen)
} catch (ex) {
do_throw("Error in onStopRequest: " + ex);
}
try {
this._closure(request, this._buffer, this._closurectx);
} catch (ex) {
do_throw("Error in closure function: " + ex);
}
}
};
var ES_ABORT_REDIRECT = 0x01;
function ChannelEventSink(flags)
{
this._flags = flags;
}
ChannelEventSink.prototype = {
QueryInterface: function(iid) {
if (iid.equals(Ci.nsIInterfaceRequestor) ||
iid.equals(Ci.nsISupports))
return this;
throw Cr.NS_ERROR_NO_INTERFACE;
},
getInterface: function(iid) {
if (iid.equals(Ci.nsIChannelEventSink))
return this;
throw Cr.NS_ERROR_NO_INTERFACE;
},
asyncOnChannelRedirect: function(oldChannel, newChannel, flags, callback) {
if (this._flags & ES_ABORT_REDIRECT)
throw Cr.NS_BINDING_ABORTED;
callback.onRedirectVerifyCallback(Cr.NS_OK);
}
};
/**
* A helper class to construct origin attributes.
*/
function OriginAttributes(appId, inIsolatedMozBrowser, privateId) {
this.appId = appId;
this.inIsolatedMozBrowser = inIsolatedMozBrowser;
this.privateBrowsingId = privateId;
}
OriginAttributes.prototype = {
appId: 0,
inIsolatedMozBrowser: false,
privateBrowsingId: 0
};
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