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-rw-r--r--src/Authenticator.cpp267
1 files changed, 267 insertions, 0 deletions
diff --git a/src/Authenticator.cpp b/src/Authenticator.cpp
new file mode 100644
index 000000000..4cbe3beed
--- /dev/null
+++ b/src/Authenticator.cpp
@@ -0,0 +1,267 @@
+
+#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "Authenticator.h"
+#include "OSSupport/BlockingTCPLink.h"
+#include "Root.h"
+#include "Server.h"
+
+#include "inifile/iniFile.h"
+
+#include <sstream>
+
+
+
+
+
+#define DEFAULT_AUTH_SERVER "session.minecraft.net"
+#define DEFAULT_AUTH_ADDRESS "/game/checkserver.jsp?user=%USERNAME%&serverId=%SERVERID%"
+#define MAX_REDIRECTS 10
+
+
+
+
+
+cAuthenticator::cAuthenticator(void) :
+ super("cAuthenticator"),
+ m_Server(DEFAULT_AUTH_SERVER),
+ m_Address(DEFAULT_AUTH_ADDRESS),
+ m_ShouldAuthenticate(true)
+{
+}
+
+
+
+
+
+cAuthenticator::~cAuthenticator()
+{
+ Stop();
+}
+
+
+
+
+
+/// Read custom values from INI
+void cAuthenticator::ReadINI(cIniFile & IniFile)
+{
+ m_Server = IniFile.GetValueSet("Authentication", "Server", DEFAULT_AUTH_SERVER);
+ m_Address = IniFile.GetValueSet("Authentication", "Address", DEFAULT_AUTH_ADDRESS);
+ m_ShouldAuthenticate = IniFile.GetValueSetB("Authentication", "Authenticate", true);
+}
+
+
+
+
+
+/// Queues a request for authenticating a user. If the auth fails, the user is kicked
+void cAuthenticator::Authenticate(int a_ClientID, const AString & a_UserName, const AString & a_ServerHash)
+{
+ if (!m_ShouldAuthenticate)
+ {
+ cRoot::Get()->AuthenticateUser(a_ClientID);
+ return;
+ }
+
+ cCSLock Lock(m_CS);
+ m_Queue.push_back(cUser(a_ClientID, a_UserName, a_ServerHash));
+ m_QueueNonempty.Set();
+}
+
+
+
+
+
+void cAuthenticator::Start(cIniFile & IniFile)
+{
+ ReadINI(IniFile);
+ m_ShouldTerminate = false;
+ super::Start();
+}
+
+
+
+
+
+void cAuthenticator::Stop(void)
+{
+ m_ShouldTerminate = true;
+ m_QueueNonempty.Set();
+ Wait();
+}
+
+
+
+
+
+void cAuthenticator::Execute(void)
+{
+ for (;;)
+ {
+ cCSLock Lock(m_CS);
+ while (!m_ShouldTerminate && (m_Queue.size() == 0))
+ {
+ cCSUnlock Unlock(Lock);
+ m_QueueNonempty.Wait();
+ }
+ if (m_ShouldTerminate)
+ {
+ return;
+ }
+ ASSERT(!m_Queue.empty());
+
+ int ClientID = m_Queue.front().m_ClientID;
+ AString UserName = m_Queue.front().m_Name;
+ AString ActualAddress = m_Address;
+ ReplaceString(ActualAddress, "%USERNAME%", UserName);
+ ReplaceString(ActualAddress, "%SERVERID%", m_Queue.front().m_ServerID);
+ m_Queue.pop_front();
+ Lock.Unlock();
+
+ if (!AuthFromAddress(m_Server, ActualAddress, UserName))
+ {
+ cRoot::Get()->KickUser(ClientID, "Failed to authenticate account!");
+ }
+ else
+ {
+ cRoot::Get()->AuthenticateUser(ClientID);
+ }
+ } // for (-ever)
+}
+
+
+
+
+
+bool cAuthenticator::AuthFromAddress(const AString & a_Server, const AString & a_Address, const AString & a_UserName, int a_Level /* = 1 */)
+{
+ // Returns true if the user authenticated okay, false on error; iLevel is the recursion deptht (bails out if too deep)
+
+ cBlockingTCPLink Link;
+ if (!Link.Connect(a_Server.c_str(), 80))
+ {
+ LOGERROR("cAuthenticator: cannot connect to auth server \"%s\", kicking user \"%s\"", a_Server.c_str(), a_Server.c_str());
+ return false;
+ }
+
+ Link.SendMessage( AString( "GET " + a_Address + " HTTP/1.1\r\n" ).c_str());
+ Link.SendMessage( AString( "User-Agent: MCServer\r\n" ).c_str());
+ Link.SendMessage( AString( "Host: " + a_Server + "\r\n" ).c_str());
+ //Link.SendMessage( AString( "Host: session.minecraft.net\r\n" ).c_str());
+ Link.SendMessage( AString( "Accept: */*\r\n" ).c_str());
+ Link.SendMessage( AString( "Connection: close\r\n" ).c_str()); //Close so we donīt have to mess with the Content-Length :)
+ Link.SendMessage( AString( "\r\n" ).c_str());
+ AString DataRecvd;
+ Link.ReceiveData(DataRecvd);
+ Link.CloseSocket();
+
+ std::stringstream ss(DataRecvd);
+
+ // Parse the data received:
+ std::string temp;
+ ss >> temp;
+ bool bRedirect = false;
+ bool bOK = false;
+ if ((temp.compare("HTTP/1.1") == 0) || (temp.compare("HTTP/1.0") == 0))
+ {
+ int code;
+ ss >> code;
+ if (code == 302)
+ {
+ // redirect blabla
+ LOGINFO("Need to redirect!");
+ if (a_Level > MAX_REDIRECTS)
+ {
+ LOGERROR("cAuthenticator: received too many levels of redirection from auth server \"%s\" for user \"%s\", bailing out and kicking the user", a_Server.c_str(), a_UserName.c_str());
+ return false;
+ }
+ bRedirect = true;
+ }
+ else if (code == 200)
+ {
+ LOGD("cAuthenticator: Received status 200 OK! :D");
+ bOK = true;
+ }
+ }
+ else
+ {
+ LOGERROR("cAuthenticator: cannot parse auth reply from server \"%s\" for user \"%s\", kicking the user.", a_Server.c_str(), a_UserName.c_str());
+ return false;
+ }
+
+ if( bRedirect )
+ {
+ AString Location;
+ // Search for "Location:"
+ bool bFoundLocation = false;
+ while( !bFoundLocation && ss.good() )
+ {
+ char c = 0;
+ while( c != '\n' )
+ {
+ ss.get( c );
+ }
+ AString Name;
+ ss >> Name;
+ if (Name.compare("Location:") == 0)
+ {
+ bFoundLocation = true;
+ ss >> Location;
+ }
+ }
+ if (!bFoundLocation)
+ {
+ LOGERROR("cAuthenticator: received invalid redirection from auth server \"%s\" for user \"%s\", kicking user.", a_Server.c_str(), a_UserName.c_str());
+ return false;
+ }
+
+ Location = Location.substr(strlen("http://"), std::string::npos); // Strip http://
+ std::string Server = Location.substr( 0, Location.find( "/" ) ); // Only leave server address
+ Location = Location.substr( Server.length(), std::string::npos);
+ return AuthFromAddress(Server, Location, a_UserName, a_Level + 1);
+ }
+
+ if (!bOK)
+ {
+ LOGERROR("cAuthenticator: received an error from auth server \"%s\" for user \"%s\", kicking user.", a_Server.c_str(), a_UserName.c_str());
+ return false;
+ }
+
+ // Header says OK, so receive the rest.
+ // Go past header, double \n means end of headers
+ char c = 0;
+ while (ss.good())
+ {
+ while (c != '\n')
+ {
+ ss.get(c);
+ }
+ ss.get(c);
+ if( c == '\n' || c == '\r' || ss.peek() == '\r' || ss.peek() == '\n' )
+ break;
+ }
+ if (!ss.good())
+ {
+ LOGERROR("cAuthenticator: error while parsing response body from auth server \"%s\" for user \"%s\", kicking user.", a_Server.c_str(), a_UserName.c_str());
+ return false;
+ }
+
+ std::string Result;
+ ss >> Result;
+ LOGD("cAuthenticator: Authentication result was %s", Result.c_str());
+
+ if (Result.compare("YES") == 0) //Works well
+ {
+ LOGINFO("Authentication result \"YES\", player authentication success!");
+ return true;
+ }
+
+
+ LOGINFO("Authentication result was \"%s\", player authentication failure!", Result.c_str());
+ return false;
+}
+
+
+
+