Revert of Remove webrtc/libjingle/{xmllite,xmpp}

webrtc/libjingle/xmpp/iqtask.cc

Index: webrtc/libjingle/xmpp/iqtask.cc
diff --git a/webrtc/libjingle/xmpp/iqtask.cc b/webrtc/libjingle/xmpp/iqtask.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a7a41ee51913e73123d400ba490e04bc2e5bc2bc
--- /dev/null
+++ b/webrtc/libjingle/xmpp/iqtask.cc
@@ -0,0 +1,69 @@
+/*
+ *  Copyright 2011 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/libjingle/xmpp/iqtask.h"
+
+#include "webrtc/libjingle/xmpp/constants.h"
+#include "webrtc/libjingle/xmpp/xmppclient.h"
+
+namespace buzz {
+
+static const int kDefaultIqTimeoutSecs = 15;
+
+IqTask::IqTask(XmppTaskParentInterface* parent,
+               const std::string& verb,
+               const buzz::Jid& to,
+               buzz::XmlElement* el)
+    : buzz::XmppTask(parent, buzz::XmppEngine::HL_SINGLE),
+      to_(to),
+      stanza_(MakeIq(verb, to_, task_id())) {
+  stanza_->AddElement(el);
+  set_timeout_seconds(kDefaultIqTimeoutSecs);
+}
+
+int IqTask::ProcessStart() {
+  buzz::XmppReturnStatus ret = SendStanza(stanza_.get());
+  // TODO: HandleError(NULL) if SendStanza fails?
+  return (ret == buzz::XMPP_RETURN_OK) ? STATE_RESPONSE : STATE_ERROR;
+}
+
+bool IqTask::HandleStanza(const buzz::XmlElement* stanza) {
+  if (!MatchResponseIq(stanza, to_, task_id()))
+    return false;
+
+  if (stanza->Attr(buzz::QN_TYPE) != buzz::STR_RESULT &&
+      stanza->Attr(buzz::QN_TYPE) != buzz::STR_ERROR) {
+    return false;
+  }
+
+  QueueStanza(stanza);
+  return true;
+}
+
+int IqTask::ProcessResponse() {
+  const buzz::XmlElement* stanza = NextStanza();
+  if (stanza == NULL)
+    return STATE_BLOCKED;
+
+  bool success = (stanza->Attr(buzz::QN_TYPE) == buzz::STR_RESULT);
+  if (success) {
+    HandleResult(stanza);
+  } else {
+    SignalError(this, stanza->FirstNamed(QN_ERROR));
+  }
+  return STATE_DONE;
+}
+
+int IqTask::OnTimeout() {
+  SignalError(this, NULL);
+  return XmppTask::OnTimeout();
+}
+
+}  // namespace buzz