/*
* 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 <vector>
#include <algorithm>
#include "talk/base/common.h"
#include "talk/xmpp/xmppengineimpl.h"
#include "talk/xmpp/constants.h"
namespace buzz {
class XmppIqEntry {
XmppIqEntry(const std::string & id, const std::string & to,
XmppEngine * pxce, XmppIqHandler * iq_handler) :
id_(id),
to_(to),
engine_(pxce),
iq_handler_(iq_handler) {
}
private:
friend class XmppEngineImpl;
const std::string id_;
const std::string to_;
XmppEngine * const engine_;
XmppIqHandler * const iq_handler_;
};
XmppReturnStatus
XmppEngineImpl::SendIq(const XmlElement * element, XmppIqHandler * iq_handler,
XmppIqCookie* cookie) {
if (state_ == STATE_CLOSED)
return XMPP_RETURN_BADSTATE;
if (NULL == iq_handler)
return XMPP_RETURN_BADARGUMENT;
if (!element || element->Name() != QN_IQ)
return XMPP_RETURN_BADARGUMENT;
const std::string& type = element->Attr(QN_TYPE);
if (type != "get" && type != "set")
return XMPP_RETURN_BADARGUMENT;
if (!element->HasAttr(QN_ID))
return XMPP_RETURN_BADARGUMENT;
const std::string& id = element->Attr(QN_ID);
XmppIqEntry * iq_entry = new XmppIqEntry(id,
element->Attr(QN_TO),
this, iq_handler);
iq_entries_->push_back(iq_entry);
SendStanza(element);
if (cookie)
*cookie = iq_entry;
return XMPP_RETURN_OK;
}
XmppReturnStatus
XmppEngineImpl::RemoveIqHandler(XmppIqCookie cookie,
XmppIqHandler ** iq_handler) {
std::vector<XmppIqEntry*, std::allocator<XmppIqEntry*> >::iterator pos;
pos = std::find(iq_entries_->begin(),
iq_entries_->end(),
reinterpret_cast<XmppIqEntry*>(cookie));
if (pos == iq_entries_->end())
return XMPP_RETURN_BADARGUMENT;
XmppIqEntry* entry = *pos;
iq_entries_->erase(pos);
if (iq_handler)
*iq_handler = entry->iq_handler_;
delete entry;
return XMPP_RETURN_OK;
}
void
XmppEngineImpl::DeleteIqCookies() {
for (size_t i = 0; i < iq_entries_->size(); i += 1) {
XmppIqEntry * iq_entry_ = (*iq_entries_)[i];
(*iq_entries_)[i] = NULL;
delete iq_entry_;
}
iq_entries_->clear();
}
static void
AecImpl(XmlElement * error_element, const QName & name,
const char * type, const char * code) {
error_element->AddElement(new XmlElement(QN_ERROR));
error_element->AddAttr(QN_CODE, code, 1);
error_element->AddAttr(QN_TYPE, type, 1);
error_element->AddElement(new XmlElement(name, true), 1);
}
static void
AddErrorCode(XmlElement * error_element, XmppStanzaError code) {
switch (code) {
case XSE_BAD_REQUEST:
AecImpl(error_element, QN_STANZA_BAD_REQUEST, "modify", "400");
break;
case XSE_CONFLICT:
AecImpl(error_element, QN_STANZA_CONFLICT, "cancel", "409");
break;
case XSE_FEATURE_NOT_IMPLEMENTED:
AecImpl(error_element, QN_STANZA_FEATURE_NOT_IMPLEMENTED,
"cancel", "501");
break;
case XSE_FORBIDDEN:
AecImpl(error_element, QN_STANZA_FORBIDDEN, "auth", "403");
break;
case XSE_GONE:
AecImpl(error_element, QN_STANZA_GONE, "modify", "302");
break;
case XSE_INTERNAL_SERVER_ERROR:
AecImpl(error_element, QN_STANZA_INTERNAL_SERVER_ERROR, "wait", "500");
break;
case XSE_ITEM_NOT_FOUND:
AecImpl(error_element, QN_STANZA_ITEM_NOT_FOUND, "cancel", "404");
break;
case XSE_JID_MALFORMED:
AecImpl(error_element, QN_STANZA_JID_MALFORMED, "modify", "400");
break;
case XSE_NOT_ACCEPTABLE:
AecImpl(error_element, QN_STANZA_NOT_ACCEPTABLE, "cancel", "406");
break;
case XSE_NOT_ALLOWED:
AecImpl(error_element, QN_STANZA_NOT_ALLOWED, "cancel", "405");
break;
case XSE_PAYMENT_REQUIRED:
AecImpl(error_element, QN_STANZA_PAYMENT_REQUIRED, "auth", "402");
break;
case XSE_RECIPIENT_UNAVAILABLE:
AecImpl(error_element, QN_STANZA_RECIPIENT_UNAVAILABLE, "wait", "404");
break;
case XSE_REDIRECT:
AecImpl(error_element, QN_STANZA_REDIRECT, "modify", "302");
break;
case XSE_REGISTRATION_REQUIRED:
AecImpl(error_element, QN_STANZA_REGISTRATION_REQUIRED, "auth", "407");
break;
case XSE_SERVER_NOT_FOUND:
AecImpl(error_element, QN_STANZA_REMOTE_SERVER_NOT_FOUND,
"cancel", "404");
break;
case XSE_SERVER_TIMEOUT:
AecImpl(error_element, QN_STANZA_REMOTE_SERVER_TIMEOUT, "wait", "502");
break;
case XSE_RESOURCE_CONSTRAINT:
AecImpl(error_element, QN_STANZA_RESOURCE_CONSTRAINT, "wait", "500");
break;
case XSE_SERVICE_UNAVAILABLE:
AecImpl(error_element, QN_STANZA_SERVICE_UNAVAILABLE, "cancel", "503");
break;
case XSE_SUBSCRIPTION_REQUIRED:
AecImpl(error_element, QN_STANZA_SUBSCRIPTION_REQUIRED, "auth", "407");
break;
case XSE_UNDEFINED_CONDITION:
AecImpl(error_element, QN_STANZA_UNDEFINED_CONDITION, "wait", "500");
break;
case XSE_UNEXPECTED_REQUEST:
AecImpl(error_element, QN_STANZA_UNEXPECTED_REQUEST, "wait", "400");
break;
}
}
XmppReturnStatus
XmppEngineImpl::SendStanzaError(const XmlElement * element_original,
XmppStanzaError code,
const std::string & text) {
if (state_ == STATE_CLOSED)
return XMPP_RETURN_BADSTATE;
XmlElement error_element(element_original->Name());
error_element.AddAttr(QN_TYPE, "error");
// copy attrs, copy 'from' to 'to' and strip 'from'
for (const XmlAttr * attribute = element_original->FirstAttr();
attribute; attribute = attribute->NextAttr()) {
QName name = attribute->Name();
if (name == QN_TO)
continue; // no need to put a from attr. Server will stamp stanza
else if (name == QN_FROM)
name = QN_TO;
else if (name == QN_TYPE)
continue;
error_element.AddAttr(name, attribute->Value());
}
// copy children
for (const XmlChild * child = element_original->FirstChild();
child;
child = child->NextChild()) {
if (child->IsText()) {
error_element.AddText(child->AsText()->Text());
} else {
error_element.AddElement(new XmlElement(*(child->AsElement())));
}
}
// add error information
AddErrorCode(&error_element, code);
if (text != STR_EMPTY) {
XmlElement * text_element = new XmlElement(QN_STANZA_TEXT, true);
text_element->AddText(text);
error_element.AddElement(text_element);
}
SendStanza(&error_element);
return XMPP_RETURN_OK;
}
bool
XmppEngineImpl::HandleIqResponse(const XmlElement * element) {
if (iq_entries_->empty())
return false;
if (element->Name() != QN_IQ)
return false;
std::string type = element->Attr(QN_TYPE);
if (type != "result" && type != "error")
return false;
if (!element->HasAttr(QN_ID))
return false;
std::string id = element->Attr(QN_ID);
std::string from = element->Attr(QN_FROM);
for (std::vector<XmppIqEntry *>::iterator it = iq_entries_->begin();
it != iq_entries_->end(); it += 1) {
XmppIqEntry * iq_entry = *it;
if (iq_entry->id_ == id && iq_entry->to_ == from) {
iq_entries_->erase(it);
iq_entry->iq_handler_->IqResponse(iq_entry, element);
delete iq_entry;
return true;
}
}
return false;
}
}