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173 lines
4.6 KiB
173 lines
4.6 KiB
/*
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* Jingle call example
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* Copyright 2004--2005, Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA
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*/
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#include "talk/examples/call/presencepushtask.h"
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#include "talk/xmpp/constants.h"
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#include <sstream>
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namespace buzz {
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// string helper functions -----------------------------------------------------
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template <class T> static
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bool FromString(const std::string& s,
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T * t) {
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std::istringstream iss(s);
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return !(iss>>*t).fail();
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}
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template <class T> static
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bool ToString(const T &t,
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std::string* s) {
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std::ostringstream oss;
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oss << t;
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*s = oss.str();
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return !oss.fail();
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}
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static bool
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IsXmlSpace(int ch) {
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return ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t';
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}
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static bool
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ListContainsToken(const std::string & list, const std::string & token) {
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size_t i = list.find(token);
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if (i == std::string::npos || token.empty())
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return false;
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bool boundary_before = (i == 0 || IsXmlSpace(list[i - 1]));
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bool boundary_after = (i == list.length() - token.length() || IsXmlSpace(list[i + token.length()]));
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return boundary_before && boundary_after;
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}
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bool
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PresencePushTask::HandleStanza(const XmlElement * stanza) {
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if (stanza->Name() != QN_PRESENCE)
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return false;
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if (stanza->HasAttr(QN_TYPE) && stanza->Attr(QN_TYPE) != STR_UNAVAILABLE)
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return false;
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QueueStanza(stanza);
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return true;
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}
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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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int
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PresencePushTask::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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Status s;
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s.set_jid(Jid(stanza->Attr(QN_FROM)));
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if (stanza->Attr(QN_TYPE) == STR_UNAVAILABLE) {
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s.set_available(false);
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SignalStatusUpdate(s);
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}
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else {
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s.set_available(true);
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const XmlElement * status = stanza->FirstNamed(QN_STATUS);
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if (status != NULL) {
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s.set_status(status->BodyText());
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// Truncate status messages longer than 300 bytes
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if (s.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(s.status()[len]) && len > 0) {
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len -= 1;
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}
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std::string truncated(s.status(), 0, len);
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s.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 (FromString(priority->BodyText(), &pri)) {
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s.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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s.set_show(Status::SHOW_ONLINE);
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}
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else {
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if (show->BodyText() == "away") {
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s.set_show(Status::SHOW_AWAY);
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}
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else if (show->BodyText() == "xa") {
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s.set_show(Status::SHOW_XA);
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}
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else if (show->BodyText() == "dnd") {
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s.set_show(Status::SHOW_DND);
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}
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else if (show->BodyText() == "chat") {
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s.set_show(Status::SHOW_CHAT);
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}
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else {
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s.set_show(Status::SHOW_ONLINE);
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}
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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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s.set_know_capabilities(true);
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if (node == GOOGLE_CLIENT_NODE) {
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s.set_is_google_client(true);
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s.set_version(ver);
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if (ListContainsToken(exts, "voice-v1")) {
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s.set_phone_capability(true);
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}
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}
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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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s.set_sent_time(stamp);
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}
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SignalStatusUpdate(s);
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}
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return STATE_START;
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}
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}
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