142 lines
4.3 KiB
C++
142 lines
4.3 KiB
C++
/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/libjingle/xmpp/presencereceivetask.h"
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#include "webrtc/libjingle/xmpp/constants.h"
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#include "webrtc/base/stringencode.h"
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namespace buzz {
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static bool IsUtf8FirstByte(int c) {
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return (((c)&0x80)==0) || // is single byte
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((unsigned char)((c)-0xc0)<0x3e); // or is lead byte
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}
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PresenceReceiveTask::PresenceReceiveTask(XmppTaskParentInterface* parent)
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: XmppTask(parent, XmppEngine::HL_TYPE) {
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}
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PresenceReceiveTask::~PresenceReceiveTask() {
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Stop();
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}
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int PresenceReceiveTask::ProcessStart() {
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const XmlElement * stanza = NextStanza();
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if (stanza == NULL) {
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return STATE_BLOCKED;
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}
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Jid from(stanza->Attr(QN_FROM));
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HandlePresence(from, stanza);
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return STATE_START;
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}
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bool PresenceReceiveTask::HandleStanza(const XmlElement * stanza) {
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// Verify that this is a presence stanze
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if (stanza->Name() != QN_PRESENCE) {
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return false; // not sure if this ever happens.
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}
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// Queue it up
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QueueStanza(stanza);
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return true;
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}
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void PresenceReceiveTask::HandlePresence(const Jid& from,
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const XmlElement* stanza) {
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if (stanza->Attr(QN_TYPE) == STR_ERROR) {
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return;
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}
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PresenceStatus status;
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DecodeStatus(from, stanza, &status);
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PresenceUpdate(status);
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}
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void PresenceReceiveTask::DecodeStatus(const Jid& from,
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const XmlElement* stanza,
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PresenceStatus* presence_status) {
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presence_status->set_jid(from);
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if (stanza->Attr(QN_TYPE) == STR_UNAVAILABLE) {
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presence_status->set_available(false);
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} else {
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presence_status->set_available(true);
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const XmlElement * status_elem = stanza->FirstNamed(QN_STATUS);
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if (status_elem != NULL) {
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presence_status->set_status(status_elem->BodyText());
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// Truncate status messages longer than 300 bytes
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if (presence_status->status().length() > 300) {
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size_t len = 300;
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// Be careful not to split legal utf-8 chars in half
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while (!IsUtf8FirstByte(presence_status->status()[len]) && len > 0) {
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len -= 1;
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}
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std::string truncated(presence_status->status(), 0, len);
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presence_status->set_status(truncated);
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}
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}
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const XmlElement * priority = stanza->FirstNamed(QN_PRIORITY);
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if (priority != NULL) {
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int pri;
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if (rtc::FromString(priority->BodyText(), &pri)) {
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presence_status->set_priority(pri);
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}
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}
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const XmlElement * show = stanza->FirstNamed(QN_SHOW);
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if (show == NULL || show->FirstChild() == NULL) {
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presence_status->set_show(PresenceStatus::SHOW_ONLINE);
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} else if (show->BodyText() == "away") {
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presence_status->set_show(PresenceStatus::SHOW_AWAY);
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} else if (show->BodyText() == "xa") {
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presence_status->set_show(PresenceStatus::SHOW_XA);
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} else if (show->BodyText() == "dnd") {
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presence_status->set_show(PresenceStatus::SHOW_DND);
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} else if (show->BodyText() == "chat") {
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presence_status->set_show(PresenceStatus::SHOW_CHAT);
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} else {
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presence_status->set_show(PresenceStatus::SHOW_ONLINE);
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}
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const XmlElement * caps = stanza->FirstNamed(QN_CAPS_C);
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if (caps != NULL) {
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std::string node = caps->Attr(QN_NODE);
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std::string ver = caps->Attr(QN_VER);
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std::string exts = caps->Attr(QN_EXT);
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presence_status->set_know_capabilities(true);
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presence_status->set_caps_node(node);
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presence_status->set_version(ver);
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}
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const XmlElement* delay = stanza->FirstNamed(kQnDelayX);
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if (delay != NULL) {
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// Ideally we would parse this according to the Psuedo ISO-8601 rules
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// that are laid out in JEP-0082:
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// http://www.jabber.org/jeps/jep-0082.html
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std::string stamp = delay->Attr(kQnStamp);
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presence_status->set_sent_time(stamp);
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}
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const XmlElement* nick = stanza->FirstNamed(QN_NICKNAME);
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if (nick) {
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presence_status->set_nick(nick->BodyText());
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}
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}
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}
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} // namespace buzz
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