/*
* libjingle
* Copyright 2004--2005, 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/examples/call/presencepushtask.h"
#include "talk/base/stringencode.h"
#include "talk/examples/call/muc.h"
#include "talk/xmpp/constants.h"
namespace buzz {
// string helper functions -----------------------------------------------------
static bool
IsXmlSpace(int ch) {
return ch == ' ' || ch == '\n' || ch == '\r' || ch == '\t';
}
static bool ListContainsToken(const std::string & list,
const std::string & token) {
size_t i = list.find(token);
if (i == std::string::npos || token.empty())
return false;
bool boundary_before = (i == 0 || IsXmlSpace(list[i - 1]));
bool boundary_after = (i == list.length() - token.length() ||
IsXmlSpace(list[i + token.length()]));
return boundary_before && boundary_after;
}
bool PresencePushTask::HandleStanza(const XmlElement * stanza) {
if (stanza->Name() != QN_PRESENCE)
return false;
QueueStanza(stanza);
return true;
}
static bool IsUtf8FirstByte(int c) {
return (((c)&0x80)==0) || // is single byte
((unsigned char)((c)-0xc0)<0x3e); // or is lead byte
}
int PresencePushTask::ProcessStart() {
const XmlElement * stanza = NextStanza();
if (stanza == NULL)
return STATE_BLOCKED;
Jid from(stanza->Attr(QN_FROM));
std::map<Jid, buzz::Muc*>::const_iterator elem =
client_->mucs().find(from.BareJid());
if (elem == client_->mucs().end()) {
HandlePresence(from, stanza);
} else {
HandleMucPresence(elem->second, from, stanza);
}
return STATE_START;
}
void PresencePushTask::HandlePresence(const Jid& from,
const XmlElement* stanza) {
if (stanza->Attr(QN_TYPE) == STR_ERROR)
return;
Status s;
FillStatus(from, stanza, &s);
SignalStatusUpdate(s);
}
void PresencePushTask::HandleMucPresence(buzz::Muc* muc,
const Jid& from,
const XmlElement* stanza) {
if (from == muc->local_jid()) {
if (!stanza->HasAttr(QN_TYPE)) {
// We joined the MUC.
const XmlElement* elem = stanza->FirstNamed(QN_MUC_USER_X);
if (elem) {
elem = elem->FirstNamed(QN_MUC_USER_STATUS);
}
if (elem && (elem->Attr(QN_CODE) == "110" ||
elem->Attr(QN_CODE) == "100")) {
SignalMucJoined(muc->jid());
}
} else {
// We've been kicked. Bye.
int error = 0;
if (stanza->Attr(QN_TYPE) == STR_ERROR) {
const XmlElement* elem = stanza->FirstNamed(QN_ERROR);
if (elem && elem->HasAttr(QN_CODE)) {
error = atoi(elem->Attr(QN_CODE).c_str());
}
}
SignalMucLeft(muc->jid(), error);
}
} else {
MucStatus s;
FillMucStatus(from, stanza, &s);
SignalMucStatusUpdate(muc->jid(), s);
}
}
void PresencePushTask::FillStatus(const Jid& from, const XmlElement* stanza,
Status* s) {
s->set_jid(from);
if (stanza->Attr(QN_TYPE) == STR_UNAVAILABLE) {
s->set_available(false);
} else {
s->set_available(true);
const XmlElement * status = stanza->FirstNamed(QN_STATUS);
if (status != NULL) {
s->set_status(status->BodyText());
// Truncate status messages longer than 300 bytes
if (s->status().length() > 300) {
size_t len = 300;
// Be careful not to split legal utf-8 chars in half
while (!IsUtf8FirstByte(s->status()[len]) && len > 0) {
len -= 1;
}
std::string truncated(s->status(), 0, len);
s->set_status(truncated);
}
}
const XmlElement * priority = stanza->FirstNamed(QN_PRIORITY);
if (priority != NULL) {
int pri;
if (talk_base::FromString(priority->BodyText(), &pri)) {
s->set_priority(pri);
}
}
const XmlElement * show = stanza->FirstNamed(QN_SHOW);
if (show == NULL || show->FirstChild() == NULL) {
s->set_show(Status::SHOW_ONLINE);
}
else {
if (show->BodyText() == "away") {
s->set_show(Status::SHOW_AWAY);
}
else if (show->BodyText() == "xa") {
s->set_show(Status::SHOW_XA);
}
else if (show->BodyText() == "dnd") {
s->set_show(Status::SHOW_DND);
}
else if (show->BodyText() == "chat") {
s->set_show(Status::SHOW_CHAT);
}
else {
s->set_show(Status::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);
s->set_know_capabilities(true);
if (node == GOOGLE_CLIENT_NODE) {
s->set_is_google_client(true);
s->set_version(ver);
}
if (ListContainsToken(exts, "voice-v1")) {
s->set_phone_capability(true);
}
if (ListContainsToken(exts, "video-v1")) {
s->set_video_capability(true);
}
}
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);
s->set_sent_time(stamp);
}
}
}
void PresencePushTask::FillMucStatus(const Jid& from, const XmlElement* stanza,
MucStatus* s) {
// First get the normal user status info. Happily, this is in the same
// format as it is for user presence.
FillStatus(from, stanza, s);
// Now look for src IDs, which will be present if this user is in a
// multiway call to this MUC.
const XmlElement* xstanza = stanza->FirstNamed(QN_MUC_USER_X);
if (xstanza) {
const XmlElement* media;
for (media = xstanza->FirstNamed(QN_GOOGLE_MUC_USER_MEDIA);
media; media = media->NextNamed(QN_GOOGLE_MUC_USER_MEDIA)) {
const XmlElement* type = media->FirstNamed(QN_GOOGLE_MUC_USER_TYPE);
if (!type) continue; // Shouldn't happen
const XmlElement* src_id = media->FirstNamed(QN_GOOGLE_MUC_USER_SRC_ID);
if (!src_id) continue; // Shouldn't happen
char *endptr;
uint32 src_id_num = strtoul(src_id->BodyText().c_str(), &endptr, 10);
if (src_id->BodyText().c_str()[0] == '\0' || endptr[0] != '\0') {
// String is not composed exclusively of leading whitespace plus a
// number (shouldn't happen). Ignore it.
continue;
}
// Else it's valid. Set it.
if (type->BodyText() == "audio") {
// This is the audio media element. Get the src-id.
s->set_audio_src_id(src_id_num);
} else if (type->BodyText() == "video") {
// This is the video media element. Get the src-id.
s->set_video_src_id(src_id_num);
}
}
}
}
}