| /* |
| * libjingle |
| * Copyright 2004--2012, Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "talk/xmpp/presencereceivetask.h" |
| |
| #include "talk/base/stringencode.h" |
| #include "talk/xmpp/constants.h" |
| |
| namespace buzz { |
| |
| static bool IsUtf8FirstByte(int c) { |
| return (((c)&0x80)==0) || // is single byte |
| ((unsigned char)((c)-0xc0)<0x3e); // or is lead byte |
| } |
| |
| PresenceReceiveTask::PresenceReceiveTask(XmppTaskParentInterface* parent) |
| : XmppTask(parent, XmppEngine::HL_TYPE) { |
| } |
| |
| PresenceReceiveTask::~PresenceReceiveTask() { |
| Stop(); |
| } |
| |
| int PresenceReceiveTask::ProcessStart() { |
| const XmlElement * stanza = NextStanza(); |
| if (stanza == NULL) { |
| return STATE_BLOCKED; |
| } |
| |
| Jid from(stanza->Attr(QN_FROM)); |
| HandlePresence(from, stanza); |
| |
| return STATE_START; |
| } |
| |
| bool PresenceReceiveTask::HandleStanza(const XmlElement * stanza) { |
| // Verify that this is a presence stanze |
| if (stanza->Name() != QN_PRESENCE) { |
| return false; // not sure if this ever happens. |
| } |
| |
| // Queue it up |
| QueueStanza(stanza); |
| |
| return true; |
| } |
| |
| void PresenceReceiveTask::HandlePresence(const Jid& from, |
| const XmlElement* stanza) { |
| if (stanza->Attr(QN_TYPE) == STR_ERROR) { |
| return; |
| } |
| |
| PresenceStatus status; |
| DecodeStatus(from, stanza, &status); |
| PresenceUpdate(status); |
| } |
| |
| void PresenceReceiveTask::DecodeStatus(const Jid& from, |
| const XmlElement* stanza, |
| PresenceStatus* presence_status) { |
| presence_status->set_jid(from); |
| if (stanza->Attr(QN_TYPE) == STR_UNAVAILABLE) { |
| presence_status->set_available(false); |
| } else { |
| presence_status->set_available(true); |
| const XmlElement * status_elem = stanza->FirstNamed(QN_STATUS); |
| if (status_elem != NULL) { |
| presence_status->set_status(status_elem->BodyText()); |
| |
| // Truncate status messages longer than 300 bytes |
| if (presence_status->status().length() > 300) { |
| size_t len = 300; |
| |
| // Be careful not to split legal utf-8 chars in half |
| while (!IsUtf8FirstByte(presence_status->status()[len]) && len > 0) { |
| len -= 1; |
| } |
| std::string truncated(presence_status->status(), 0, len); |
| presence_status->set_status(truncated); |
| } |
| } |
| |
| const XmlElement * priority = stanza->FirstNamed(QN_PRIORITY); |
| if (priority != NULL) { |
| int pri; |
| if (talk_base::FromString(priority->BodyText(), &pri)) { |
| presence_status->set_priority(pri); |
| } |
| } |
| |
| const XmlElement * show = stanza->FirstNamed(QN_SHOW); |
| if (show == NULL || show->FirstChild() == NULL) { |
| presence_status->set_show(PresenceStatus::SHOW_ONLINE); |
| } else if (show->BodyText() == "away") { |
| presence_status->set_show(PresenceStatus::SHOW_AWAY); |
| } else if (show->BodyText() == "xa") { |
| presence_status->set_show(PresenceStatus::SHOW_XA); |
| } else if (show->BodyText() == "dnd") { |
| presence_status->set_show(PresenceStatus::SHOW_DND); |
| } else if (show->BodyText() == "chat") { |
| presence_status->set_show(PresenceStatus::SHOW_CHAT); |
| } else { |
| presence_status->set_show(PresenceStatus::SHOW_ONLINE); |
| } |
| |
| const XmlElement * caps = stanza->FirstNamed(QN_CAPS_C); |
| if (caps != NULL) { |
| std::string node = caps->Attr(QN_NODE); |
| std::string ver = caps->Attr(QN_VER); |
| std::string exts = caps->Attr(QN_EXT); |
| |
| presence_status->set_know_capabilities(true); |
| presence_status->set_caps_node(node); |
| presence_status->set_version(ver); |
| } |
| |
| const XmlElement* delay = stanza->FirstNamed(kQnDelayX); |
| if (delay != NULL) { |
| // Ideally we would parse this according to the Psuedo ISO-8601 rules |
| // that are laid out in JEP-0082: |
| // http://www.jabber.org/jeps/jep-0082.html |
| std::string stamp = delay->Attr(kQnStamp); |
| presence_status->set_sent_time(stamp); |
| } |
| |
| const XmlElement* nick = stanza->FirstNamed(QN_NICKNAME); |
| if (nick) { |
| presence_status->set_nick(nick->BodyText()); |
| } |
| } |
| } |
| |
| } // namespace buzz |