First Commit

For Azeroth!

src/server/authserver/Server/AuthSocket.h

@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 
+ * Copyright (C) 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _AUTHSOCKET_H
+#define _AUTHSOCKET_H
+
+#include "Common.h"
+#include "BigNumber.h"
+#include "RealmSocket.h"
+
+class ACE_INET_Addr;
+struct Realm;
+
+// Handle login commands
+class AuthSocket: public RealmSocket::Session
+{
+public:
+    const static int s_BYTE_SIZE = 32;
+
+    AuthSocket(RealmSocket& socket);
+    virtual ~AuthSocket(void);
+
+    virtual void OnRead(void);
+    virtual void OnAccept(void);
+    virtual void OnClose(void);
+
+    static ACE_INET_Addr const& GetAddressForClient(Realm const& realm, ACE_INET_Addr const& clientAddr);
+
+    bool _HandleLogonChallenge();
+    bool _HandleLogonProof();
+    bool _HandleReconnectChallenge();
+    bool _HandleReconnectProof();
+    bool _HandleRealmList();
+
+    //data transfer handle for patch
+    bool _HandleXferResume();
+    bool _HandleXferCancel();
+    bool _HandleXferAccept();
+
+    void _SetVSFields(const std::string& rI);
+
+    FILE* pPatch;
+    ACE_Thread_Mutex patcherLock;
+
+private:
+    RealmSocket& socket_;
+    RealmSocket& socket(void) { return socket_; }
+
+    BigNumber N, s, g, v;
+    BigNumber b, B;
+    BigNumber K;
+    BigNumber _reconnectProof;
+
+    bool _authed;
+
+    std::string _login;
+
+    // Since GetLocaleByName() is _NOT_ bijective, we have to store the locale as a string. Otherwise we can't differ
+    // between enUS and enGB, which is important for the patch system
+    std::string _localizationName;
+    std::string _os;
+    uint16 _build;
+    uint8 _expversion;
+    AccountTypes _accountSecurityLevel;
+};
+
+#endif

src/server/authserver/Server/RealmAcceptor.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 
+ * Copyright (C) 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __REALMACCEPTOR_H__
+#define __REALMACCEPTOR_H__
+
+#include <ace/Acceptor.h>
+#include <ace/SOCK_Acceptor.h>
+
+#include "RealmSocket.h"
+#include "AuthSocket.h"
+
+class RealmAcceptor : public ACE_Acceptor<RealmSocket, ACE_SOCK_Acceptor>
+{
+public:
+    RealmAcceptor(void) { }
+    virtual ~RealmAcceptor(void)
+    {
+        if (reactor())
+            reactor()->cancel_timer(this, 1);
+    }
+
+protected:
+    virtual int make_svc_handler(RealmSocket* &sh)
+    {
+        if (sh == 0)
+            ACE_NEW_RETURN(sh, RealmSocket, -1);
+
+        sh->reactor(reactor());
+        sh->set_session(new AuthSocket(*sh));
+        return 0;
+    }
+
+    virtual int handle_timeout(const ACE_Time_Value& /*current_time*/, const void* /*act = 0*/)
+    {
+        sLog->outBasic("Resuming acceptor");
+        reactor()->cancel_timer(this, 1);
+        return reactor()->register_handler(this, ACE_Event_Handler::ACCEPT_MASK);
+    }
+
+    virtual int handle_accept_error(void)
+    {
+#if defined(ENFILE) && defined(EMFILE)
+        if (errno == ENFILE || errno == EMFILE)
+        {
+            sLog->outError("Out of file descriptors, suspending incoming connections for 10 seconds");
+            reactor()->remove_handler(this, ACE_Event_Handler::ACCEPT_MASK | ACE_Event_Handler::DONT_CALL);
+            reactor()->schedule_timer(this, NULL, ACE_Time_Value(10));
+        }
+#endif
+        return 0;
+    }
+};
+
+#endif

src/server/authserver/Server/RealmSocket.cpp

@@ -0,0 +1,291 @@
+/*
+ * Copyright (C) 
+ * Copyright (C) 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ace/OS_NS_string.h>
+#include <ace/INET_Addr.h>
+#include <ace/SString.h>
+
+#include "RealmSocket.h"
+#include "Log.h"
+
+RealmSocket::Session::Session(void) { }
+
+RealmSocket::Session::~Session(void) { }
+
+RealmSocket::RealmSocket(void) :
+    input_buffer_(4096), session_(NULL),
+    _remoteAddress(), _remotePort(0)
+{
+    reference_counting_policy().value(ACE_Event_Handler::Reference_Counting_Policy::ENABLED);
+
+    msg_queue()->high_water_mark(8 * 1024 * 1024);
+    msg_queue()->low_water_mark(8 * 1024 * 1024);
+}
+
+RealmSocket::~RealmSocket(void)
+{
+    if (msg_queue())
+        msg_queue()->close();
+
+    // delete RealmSocketObject must never be called from our code.
+    closing_ = true;
+
+    delete session_;
+
+    peer().close();
+}
+
+int RealmSocket::open(void * arg)
+{
+    ACE_INET_Addr addr;
+
+    if (peer().get_remote_addr(addr) == -1)
+    {
+        sLog->outError("Error %s while opening realm socket!", ACE_OS::strerror(errno));
+        return -1;
+    }
+
+    _remoteAddress = addr.get_host_addr();
+    _remotePort = addr.get_port_number();
+
+    // Register with ACE Reactor
+    if (Base::open(arg) == -1)
+        return -1;
+
+    if (session_)
+        session_->OnAccept();
+
+    // reactor takes care of the socket from now on
+    remove_reference();
+
+    return 0;
+}
+
+int RealmSocket::close(u_long)
+{
+    shutdown();
+
+    closing_ = true;
+
+    remove_reference();
+
+    return 0;
+}
+
+const std::string& RealmSocket::getRemoteAddress(void) const
+{
+    return _remoteAddress;
+}
+
+uint16 RealmSocket::getRemotePort(void) const
+{
+    return _remotePort;
+}
+
+size_t RealmSocket::recv_len(void) const
+{
+    return input_buffer_.length();
+}
+
+bool RealmSocket::recv_soft(char *buf, size_t len)
+{
+    if (input_buffer_.length() < len)
+        return false;
+
+    ACE_OS::memcpy(buf, input_buffer_.rd_ptr(), len);
+
+    return true;
+}
+
+bool RealmSocket::recv(char *buf, size_t len)
+{
+    bool ret = recv_soft(buf, len);
+
+    if (ret)
+        recv_skip(len);
+
+    return ret;
+}
+
+void RealmSocket::recv_skip(size_t len)
+{
+    input_buffer_.rd_ptr(len);
+}
+
+ssize_t RealmSocket::noblk_send(ACE_Message_Block &message_block)
+{
+    const size_t len = message_block.length();
+
+    if (len == 0)
+        return -1;
+
+    // Try to send the message directly.
+#ifdef MSG_NOSIGNAL
+    ssize_t n = peer().send(message_block.rd_ptr(), len, MSG_NOSIGNAL);
+#else
+    ssize_t n = peer().send(message_block.rd_ptr(), len);
+#endif // MSG_NOSIGNAL
+
+    if (n < 0)
+    {
+        if (errno == EWOULDBLOCK) // Blocking signal
+            return 0;
+        else // Error happened
+            return -1;
+    }
+    else if (n == 0)
+    {
+        // Can this happen ?
+        return -1;
+    }
+
+    // return bytes transmitted
+    return n;
+}
+
+bool RealmSocket::send(const char *buf, size_t len)
+{
+    if (buf == NULL || len == 0)
+        return true;
+
+    ACE_Data_Block db(len, ACE_Message_Block::MB_DATA, (const char*)buf, 0, 0, ACE_Message_Block::DONT_DELETE, 0);
+    ACE_Message_Block message_block(&db, ACE_Message_Block::DONT_DELETE, 0);
+
+    message_block.wr_ptr(len);
+
+    if (msg_queue()->is_empty())
+    {
+        // Try to send it directly.
+        ssize_t n = noblk_send(message_block);
+
+        if (n < 0)
+            return false;
+
+        size_t un = size_t(n);
+        if (un == len)
+            return true;
+
+        // fall down
+        message_block.rd_ptr(un);
+    }
+
+    ACE_Message_Block* mb = message_block.clone();
+
+    if (msg_queue()->enqueue_tail(mb, (ACE_Time_Value *)(&ACE_Time_Value::zero)) == -1)
+    {
+        mb->release();
+        return false;
+    }
+
+    if (reactor()->schedule_wakeup(this, ACE_Event_Handler::WRITE_MASK) == -1)
+        return false;
+
+    return true;
+}
+
+int RealmSocket::handle_output(ACE_HANDLE)
+{
+    if (closing_)
+        return -1;
+
+    ACE_Message_Block* mb = 0;
+
+    if (msg_queue()->is_empty())
+    {
+        reactor()->cancel_wakeup(this, ACE_Event_Handler::WRITE_MASK);
+        return 0;
+    }
+
+    if (msg_queue()->dequeue_head(mb, (ACE_Time_Value *)(&ACE_Time_Value::zero)) == -1)
+        return -1;
+
+    ssize_t n = noblk_send(*mb);
+
+    if (n < 0)
+    {
+        mb->release();
+        return -1;
+    }
+    else if (size_t(n) == mb->length())
+    {
+        mb->release();
+        return 1;
+    }
+    else
+    {
+        mb->rd_ptr(n);
+
+        if (msg_queue()->enqueue_head(mb, (ACE_Time_Value *) &ACE_Time_Value::zero) == -1)
+        {
+            mb->release();
+            return -1;
+        }
+
+        return 0;
+    }
+
+    ACE_NOTREACHED(return -1);
+}
+
+int RealmSocket::handle_close(ACE_HANDLE h, ACE_Reactor_Mask)
+{
+    // As opposed to WorldSocket::handle_close, we don't need locks here.
+    closing_ = true;
+
+    if (h == ACE_INVALID_HANDLE)
+        peer().close_writer();
+
+    if (session_)
+        session_->OnClose();
+
+    reactor()->remove_handler(this, ACE_Event_Handler::DONT_CALL | ACE_Event_Handler::ALL_EVENTS_MASK);
+    return 0;
+}
+
+int RealmSocket::handle_input(ACE_HANDLE)
+{
+    if (closing_)
+        return -1;
+
+    const ssize_t space = input_buffer_.space();
+
+    ssize_t n = peer().recv(input_buffer_.wr_ptr(), space);
+
+    if (n < 0)
+        return errno == EWOULDBLOCK ? 0 : -1;
+    else if (n == 0) // EOF
+        return -1;
+
+    input_buffer_.wr_ptr((size_t)n);
+
+    if (session_ != NULL)
+    {
+        session_->OnRead();
+        input_buffer_.crunch();
+    }
+
+    // return 1 in case there is more data to read from OS
+    return n == space ? 1 : 0;
+}
+
+void RealmSocket::set_session(Session* session)
+{
+    delete session_;
+
+    session_ = session;
+}

src/server/authserver/Server/RealmSocket.h

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 
+ * Copyright (C) 
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __REALMSOCKET_H__
+#define __REALMSOCKET_H__
+
+#include <ace/Synch_Traits.h>
+#include <ace/Svc_Handler.h>
+#include <ace/SOCK_Stream.h>
+#include <ace/Message_Block.h>
+#include <ace/Basic_Types.h>
+#include "Common.h"
+
+class RealmSocket : public ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_NULL_SYNCH>
+{
+private:
+    typedef ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_NULL_SYNCH> Base;
+
+public:
+    class Session
+    {
+    public:
+        Session(void);
+        virtual ~Session(void);
+
+        virtual void OnRead(void) = 0;
+        virtual void OnAccept(void) = 0;
+        virtual void OnClose(void) = 0;
+    };
+
+    RealmSocket(void);
+    virtual ~RealmSocket(void);
+
+    size_t recv_len(void) const;
+    bool recv_soft(char *buf, size_t len);
+    bool recv(char *buf, size_t len);
+    void recv_skip(size_t len);
+
+    bool send(const char *buf, size_t len);
+
+    const std::string& getRemoteAddress(void) const;
+
+    uint16 getRemotePort(void) const;
+
+    virtual int open(void *);
+
+    virtual int close(u_long);
+
+    virtual int handle_input(ACE_HANDLE = ACE_INVALID_HANDLE);
+    virtual int handle_output(ACE_HANDLE = ACE_INVALID_HANDLE);
+
+    virtual int handle_close(ACE_HANDLE = ACE_INVALID_HANDLE, ACE_Reactor_Mask = ACE_Event_Handler::ALL_EVENTS_MASK);
+
+    void set_session(Session* session);
+
+private:
+    ssize_t noblk_send(ACE_Message_Block &message_block);
+
+    ACE_Message_Block input_buffer_;
+    Session* session_;
+    std::string _remoteAddress;
+    uint16 _remotePort;
+};
+
+#endif /* __REALMSOCKET_H__ */