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373 lines
9.3 KiB
373 lines
9.3 KiB
/*
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* libjingle
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* Copyright 2004--2005, Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "xmppclient.h"
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#include "xmpptask.h"
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#include "talk/xmpp/constants.h"
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#include "talk/base/sigslot.h"
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#include "talk/xmpp/saslplainmechanism.h"
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#include "talk/xmpp/prexmppauth.h"
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#include "talk/base/scoped_ptr.h"
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#include "talk/xmpp/plainsaslhandler.h"
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namespace buzz {
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Task *
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XmppClient::GetParent(int code) {
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if (code == XMPP_CLIENT_TASK_CODE)
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return this;
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else
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return Task::GetParent(code);
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}
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class XmppClient::Private :
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public sigslot::has_slots<>,
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public XmppSessionHandler,
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public XmppOutputHandler {
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public:
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Private(XmppClient * client) :
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client_(client),
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socket_(NULL),
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engine_(NULL),
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proxy_port_(0),
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pre_engine_error_(XmppEngine::ERROR_NONE),
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signal_closed_(false) {}
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// the owner
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XmppClient * const client_;
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// the two main objects
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scoped_ptr<AsyncSocket> socket_;
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scoped_ptr<XmppEngine> engine_;
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scoped_ptr<PreXmppAuth> pre_auth_;
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XmppPassword pass_;
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std::string auth_cookie_;
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cricket::SocketAddress server_;
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std::string proxy_host_;
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int proxy_port_;
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XmppEngine::Error pre_engine_error_;
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CaptchaChallenge captcha_challenge_;
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bool signal_closed_;
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// implementations of interfaces
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void OnStateChange(int state);
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void WriteOutput(const char * bytes, size_t len);
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void StartTls(const std::string & domainname);
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void CloseConnection();
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// slots for socket signals
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void OnSocketConnected();
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void OnSocketRead();
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void OnSocketClosed();
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};
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XmppReturnStatus
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XmppClient::Connect(const XmppClientSettings & settings, AsyncSocket * socket, PreXmppAuth * pre_auth) {
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if (socket == NULL)
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return XMPP_RETURN_BADARGUMENT;
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if (d_->socket_.get() != NULL)
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return XMPP_RETURN_BADSTATE;
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d_->socket_.reset(socket);
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d_->socket_->SignalConnected.connect(d_.get(), &Private::OnSocketConnected);
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d_->socket_->SignalRead.connect(d_.get(), &Private::OnSocketRead);
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d_->socket_->SignalClosed.connect(d_.get(), &Private::OnSocketClosed);
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d_->engine_.reset(XmppEngine::Create());
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d_->engine_->SetSessionHandler(d_.get());
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d_->engine_->SetOutputHandler(d_.get());
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d_->engine_->SetUser(buzz::Jid(settings.user(), settings.host(), STR_EMPTY));
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if (!settings.resource().empty()) {
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d_->engine_->SetRequestedResource(settings.resource());
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}
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d_->engine_->SetUseTls(settings.use_tls());
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d_->pass_ = settings.pass();
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d_->auth_cookie_ = settings.auth_cookie();
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d_->server_ = settings.server();
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d_->proxy_host_ = settings.proxy_host();
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d_->proxy_port_ = settings.proxy_port();
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d_->pre_auth_.reset(pre_auth);
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return XMPP_RETURN_OK;
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}
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XmppEngine::State
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XmppClient::GetState() {
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if (d_->engine_.get() == NULL)
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return XmppEngine::STATE_NONE;
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return d_->engine_->GetState();
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}
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XmppEngine::Error
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XmppClient::GetError() {
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if (d_->engine_.get() == NULL)
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return XmppEngine::ERROR_NONE;
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if (d_->pre_engine_error_ != XmppEngine::ERROR_NONE)
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return d_->pre_engine_error_;
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return d_->engine_->GetError();
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}
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CaptchaChallenge XmppClient::GetCaptchaChallenge() {
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if (d_->engine_.get() == NULL)
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return CaptchaChallenge();
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return d_->captcha_challenge_;
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}
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std::string
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XmppClient::GetAuthCookie() {
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if (d_->engine_.get() == NULL)
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return "";
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return d_->auth_cookie_;
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}
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static void
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ForgetPassword(std::string & to_erase) {
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size_t len = to_erase.size();
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for (size_t i = 0; i < len; i++) {
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// get rid of characters
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to_erase[i] = 'x';
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}
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// get rid of length
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to_erase.erase();
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}
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int
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XmppClient::ProcessStart() {
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if (d_->pre_auth_.get()) {
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d_->pre_auth_->SignalAuthDone.connect(this, &XmppClient::OnAuthDone);
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d_->pre_auth_->StartPreXmppAuth(
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d_->engine_->GetUser(), d_->server_, d_->pass_, d_->auth_cookie_);
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d_->pass_.Clear(); // done with this;
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return STATE_PRE_XMPP_LOGIN;
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}
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else {
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d_->engine_->SetSaslHandler(new PlainSaslHandler(
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d_->engine_->GetUser(), d_->pass_));
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d_->pass_.Clear(); // done with this;
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return STATE_START_XMPP_LOGIN;
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}
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}
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void
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XmppClient::OnAuthDone() {
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Wake();
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}
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int
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XmppClient::ProcessCookieLogin() {
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// Don't know how this could happen, but crash reports show it as NULL
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if (!d_->pre_auth_.get()) {
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d_->pre_engine_error_ = XmppEngine::ERROR_AUTH;
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EnsureClosed();
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return STATE_ERROR;
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}
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// Wait until pre authentication is done is done
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if (!d_->pre_auth_->IsAuthDone())
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return STATE_BLOCKED;
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if (!d_->pre_auth_->IsAuthorized()) {
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// maybe split out a case when gaia is down?
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if (d_->pre_auth_->HadError()) {
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d_->pre_engine_error_ = XmppEngine::ERROR_AUTH;
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}
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else {
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d_->pre_engine_error_ = XmppEngine::ERROR_UNAUTHORIZED;
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d_->captcha_challenge_ = d_->pre_auth_->GetCaptchaChallenge();
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}
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d_->pre_auth_.reset(NULL); // done with this
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EnsureClosed();
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return STATE_ERROR;
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}
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// Save auth cookie as a result
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d_->auth_cookie_ = d_->pre_auth_->GetAuthCookie();
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// transfer ownership of pre_auth_ to engine
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d_->engine_->SetSaslHandler(d_->pre_auth_.release());
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return STATE_START_XMPP_LOGIN;
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}
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int
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XmppClient::ProcessStartXmppLogin() {
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// Done with pre-connect tasks - connect!
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if (!d_->socket_->Connect(d_->server_)) {
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EnsureClosed();
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return STATE_ERROR;
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}
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return STATE_RESPONSE;
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}
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int
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XmppClient::ProcessResponse() {
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// Hang around while we are connected.
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if (!delivering_signal_ && (d_->engine_.get() == NULL ||
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d_->engine_->GetState() == XmppEngine::STATE_CLOSED))
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return STATE_DONE;
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return STATE_BLOCKED;
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}
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XmppReturnStatus
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XmppClient::Disconnect() {
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if (d_->socket_.get() == NULL)
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return XMPP_RETURN_BADSTATE;
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d_->engine_->Disconnect();
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return XMPP_RETURN_OK;
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}
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XmppClient::XmppClient(Task * parent) : Task(parent),
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delivering_signal_(false) {
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d_.reset(new Private(this));
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}
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XmppClient::~XmppClient() {}
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const Jid &
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XmppClient::jid() {
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return d_->engine_->FullJid();
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}
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std::string
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XmppClient::NextId() {
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return d_->engine_->NextId();
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}
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XmppReturnStatus
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XmppClient::SendStanza(const XmlElement * stanza) {
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return d_->engine_->SendStanza(stanza);
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}
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XmppReturnStatus
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XmppClient::SendStanzaError(const XmlElement * old_stanza, XmppStanzaError xse, const std::string & message) {
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return d_->engine_->SendStanzaError(old_stanza, xse, message);
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}
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XmppReturnStatus
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XmppClient::SendRaw(const std::string & text) {
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return d_->engine_->SendRaw(text);
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}
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XmppEngine*
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XmppClient::engine() {
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return d_->engine_.get();
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}
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void
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XmppClient::Private::OnSocketConnected() {
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engine_->Connect();
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}
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void
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XmppClient::Private::OnSocketRead() {
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char bytes[4096];
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size_t bytes_read;
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for (;;) {
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if (!socket_->Read(bytes, sizeof(bytes), &bytes_read)) {
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// TODO: deal with error information
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return;
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}
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if (bytes_read == 0)
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return;
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//#ifdef _DEBUG
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client_->SignalLogInput(bytes, bytes_read);
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//#endif
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engine_->HandleInput(bytes, bytes_read);
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}
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}
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void
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XmppClient::Private::OnSocketClosed() {
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engine_->ConnectionClosed();
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}
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void
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XmppClient::Private::OnStateChange(int state) {
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if (state == XmppEngine::STATE_CLOSED) {
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client_->EnsureClosed();
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}
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else {
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client_->SignalStateChange((XmppEngine::State)state);
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}
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client_->Wake();
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}
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void
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XmppClient::Private::WriteOutput(const char * bytes, size_t len) {
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//#ifdef _DEBUG
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client_->SignalLogOutput(bytes, len);
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//#endif
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socket_->Write(bytes, len);
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// TODO: deal with error information
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}
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void
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XmppClient::Private::StartTls(const std::string & domain) {
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#if defined(FEATURE_ENABLE_SSL)
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socket_->StartTls(domain);
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#endif
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}
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void
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XmppClient::Private::CloseConnection() {
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socket_->Close();
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}
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void
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XmppClient::AddXmppTask(XmppTask * task, XmppEngine::HandlerLevel level) {
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d_->engine_->AddStanzaHandler(task, level);
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}
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void
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XmppClient::RemoveXmppTask(XmppTask * task) {
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d_->engine_->RemoveStanzaHandler(task);
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}
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void
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XmppClient::EnsureClosed() {
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if (!d_->signal_closed_) {
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d_->signal_closed_ = true;
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delivering_signal_ = true;
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SignalStateChange(XmppEngine::STATE_CLOSED);
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delivering_signal_ = false;
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}
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}
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}
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