version 0.0.2
[fms.git] / src / freenet / trustlistrequester.cpp
diff --git a/src/freenet/trustlistrequester.cpp b/src/freenet/trustlistrequester.cpp
new file mode 100644 (file)
index 0000000..f5e4be9
--- /dev/null
@@ -0,0 +1,329 @@
+#include "../../include/freenet/trustlistrequester.h"\r
+#include "../../include/option.h"\r
+#include "../../include/stringfunctions.h"\r
+#include "../../include/freenet/trustlistxml.h"\r
+\r
+#ifdef XMEM\r
+       #include <xmem.h>\r
+#endif\r
+\r
+TrustListRequester::TrustListRequester()\r
+{\r
+       Initialize();\r
+}\r
+\r
+TrustListRequester::TrustListRequester(FCPv2 *fcp):IFCPConnected(fcp)\r
+{\r
+       Initialize();\r
+}\r
+\r
+void TrustListRequester::FCPConnected()\r
+{\r
+       m_requesting.clear();\r
+       PopulateIDList();\r
+}\r
+\r
+void TrustListRequester::FCPDisconnected()\r
+{\r
+       \r
+}\r
+\r
+const bool TrustListRequester::HandleAllData(FCPMessage &message)\r
+{\r
+       DateTime now;\r
+       SQLite3DB::Statement st;\r
+       std::vector<std::string> idparts;\r
+       long datalength;\r
+       std::vector<char> data;\r
+       TrustListXML xml;\r
+       long identityid;\r
+       long index;\r
+\r
+       now.SetToGMTime();\r
+       StringFunctions::Split(message["Identifier"],"|",idparts);\r
+       StringFunctions::Convert(message["DataLength"],datalength);\r
+       StringFunctions::Convert(idparts[1],identityid);\r
+       StringFunctions::Convert(idparts[2],index);\r
+\r
+       // wait for all data to be received from connection\r
+       while(m_fcp->Connected() && m_fcp->ReceiveBufferSize()<datalength)\r
+       {\r
+               m_fcp->Update(1);\r
+       }\r
+\r
+       // if we got disconnected- return immediately\r
+       if(m_fcp->Connected()==false)\r
+       {\r
+               return false;\r
+       }\r
+\r
+       // receive the file\r
+       data.resize(datalength);\r
+       m_fcp->ReceiveRaw(&data[0],datalength);\r
+\r
+       // parse file into xml and update the database\r
+       if(xml.ParseXML(std::string(data.begin(),data.end()))==true)\r
+       {\r
+               st=m_db->Prepare("SELECT IdentityID FROM tblIdentity WHERE PublicKey=?;");\r
+               // loop through all trust entries in xml and add to database if we don't already know them\r
+               for(long i=0; i<xml.TrustCount(); i++)\r
+               {\r
+                       std::string identity;\r
+                       identity=xml.GetIdentity(i);\r
+\r
+                       //TODO get the trust levels as well\r
+\r
+                       st.Bind(0,identity);\r
+                       st.Step();\r
+                       if(st.RowReturned()==false)\r
+                       {\r
+                               m_db->Execute("INSERT INTO tblIdentity(PublicKey,DateAdded) VALUES('"+identity+"','"+now.Format("%Y-%m-%d %H:%M:%S")+"');");\r
+                       }\r
+                       st.Reset();\r
+               }\r
+\r
+               st=m_db->Prepare("INSERT INTO tblTrustListRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'true');");\r
+               st.Bind(0,identityid);\r
+               st.Bind(1,idparts[4]);\r
+               st.Bind(2,index);\r
+               st.Step();\r
+               st.Finalize();\r
+\r
+               m_log->WriteLog(LogFile::LOGLEVEL_DEBUG,__FUNCTION__" parsed Identity XML file : "+message["Identifier"]);\r
+       }\r
+       else\r
+       {\r
+               // bad data - mark index\r
+               st=m_db->Prepare("INSERT INTO tblTrustListRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
+               st.Bind(0,identityid);\r
+               st.Bind(1,idparts[4]);\r
+               st.Bind(2,index);\r
+               st.Step();\r
+               st.Finalize();\r
+\r
+               m_log->WriteLog(LogFile::LOGLEVEL_ERROR,__FUNCTION__" error parsing TrustList XML file : "+message["Identifier"]);\r
+       }\r
+\r
+       // remove this identityid from request list\r
+       RemoveFromRequestList(identityid);\r
+\r
+       return true;\r
+\r
+}\r
+\r
+const bool TrustListRequester::HandleGetFailed(FCPMessage &message)\r
+{\r
+       DateTime now;\r
+       SQLite3DB::Statement st;\r
+       std::vector<std::string> idparts;\r
+       long identityid;\r
+       long index;\r
+\r
+       now.SetToGMTime();\r
+       StringFunctions::Split(message["Identifier"],"|",idparts);\r
+       StringFunctions::Convert(idparts[1],identityid);\r
+       StringFunctions::Convert(idparts[2],index);     \r
+\r
+       // if this is a fatal error - insert index into database so we won't try to download this index again\r
+       if(message["Fatal"]=="true")\r
+       {\r
+               st=m_db->Prepare("INSERT INTO tblTrustListRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
+               st.Bind(0,identityid);\r
+               st.Bind(1,idparts[4]);\r
+               st.Bind(2,index);\r
+               st.Step();\r
+               st.Finalize();\r
+\r
+               m_log->WriteLog(LogFile::LOGLEVEL_ERROR,__FUNCTION__" fatal error requesting "+message["Identifier"]);\r
+       }\r
+\r
+       // remove this identityid from request list\r
+       RemoveFromRequestList(identityid);\r
+\r
+       return true;\r
+\r
+}\r
+\r
+const bool TrustListRequester::HandleMessage(FCPMessage &message)\r
+{\r
+\r
+       if(message["Identifier"].find("TrustListRequester")==0)\r
+       {\r
+               if(message.GetName()=="DataFound")\r
+               {\r
+                       return true;\r
+               }\r
+\r
+               if(message.GetName()=="AllData")\r
+               {\r
+                       return HandleAllData(message);\r
+               }\r
+\r
+               if(message.GetName()=="GetFailed")\r
+               {\r
+                       return HandleGetFailed(message);\r
+               }\r
+\r
+               if(message.GetName()=="IdentifierCollision")\r
+               {\r
+                       // remove one of the ids from the requesting list\r
+                       long identityid=0;\r
+                       std::vector<std::string> idparts;\r
+                       StringFunctions::Split(message["Identifier"],"|",idparts);\r
+                       StringFunctions::Convert(idparts[1],identityid);\r
+                       RemoveFromRequestList(identityid);\r
+                       return true;\r
+               }\r
+       }\r
+\r
+       return false;\r
+}\r
+\r
+void TrustListRequester::Initialize()\r
+{\r
+       std::string tempval="";\r
+       Option::instance()->Get("MaxIdentityRequests",tempval);\r
+       StringFunctions::Convert(tempval,m_maxrequests);\r
+       if(m_maxrequests<1)\r
+       {\r
+               m_maxrequests=1;\r
+               m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"Option MaxTrustListRequests is currently set at "+tempval+".  It must be 1 or greater.");\r
+       }\r
+       if(m_maxrequests>100)\r
+       {\r
+               m_log->WriteLog(LogFile::LOGLEVEL_WARNING,"Option MaxTrustListRequests is currently set at "+tempval+".  This value might be incorrectly configured.");\r
+       }\r
+       Option::instance()->Get("MessageBase",m_messagebase);\r
+       m_tempdate.SetToGMTime();\r
+}\r
+\r
+void TrustListRequester::PopulateIDList()\r
+{\r
+       DateTime date;\r
+       int id;\r
+\r
+       date.SetToGMTime();\r
+\r
+       // select identities we want to query (we've seen them today and they are publishing trust list) - sort by their trust level (descending) with secondary sort on how long ago we saw them (ascending)\r
+       SQLite3DB::Statement st=m_db->Prepare("SELECT IdentityID FROM tblIdentity WHERE PublicKey IS NOT NULL AND PublicKey <> '' AND LastSeen>='"+date.Format("%Y-%m-%d")+"' AND PublishTrustList='true' AND LocalTrustListTrust>=(SELECT OptionValue FROM tblOption WHERE Option='MinLocalTrustListTrust') ORDER BY LocalMessageTrust+LocalTrustListTrust DESC, LastSeen;");\r
+       st.Step();\r
+\r
+       m_ids.clear();\r
+\r
+       while(st.RowReturned())\r
+       {\r
+               st.ResultInt(0,id);\r
+               m_ids[id]=false;\r
+               st.Step();\r
+       }\r
+}\r
+\r
+void TrustListRequester::Process()\r
+{\r
+       // max is the smaller of the config value or the total number of identities we will request from\r
+       long max=m_maxrequests>m_ids.size() ? m_ids.size() : m_maxrequests;\r
+\r
+       // try to keep up to max requests going\r
+       if(m_requesting.size()<max)\r
+       {\r
+               std::map<long,bool>::iterator i=m_ids.begin();\r
+               while(i!=m_ids.end() && (*i).second==true)\r
+               {\r
+                       i++;\r
+               }\r
+\r
+               if(i!=m_ids.end())\r
+               {\r
+                       StartRequest((*i).first);\r
+               }\r
+               else\r
+               {\r
+                       // we requested from all ids in the list, repopulate the list\r
+                       PopulateIDList();\r
+               }\r
+       }\r
+       // special case - if there were 0 identities on the list when we started then we will never get a chance to repopulate the list\r
+       // this will recheck for ids every minute\r
+       DateTime now;\r
+       now.SetToGMTime();\r
+       if(m_tempdate<(now-(1.0/1440.0)))\r
+       {\r
+               PopulateIDList();\r
+               m_tempdate=now;\r
+       }\r
+\r
+}\r
+\r
+void TrustListRequester::RegisterWithThread(FreenetMasterThread *thread)\r
+{\r
+       thread->RegisterFCPConnected(this);\r
+       thread->RegisterFCPMessageHandler(this);\r
+       thread->RegisterPeriodicProcessor(this);\r
+}\r
+\r
+void TrustListRequester::RemoveFromRequestList(const long identityid)\r
+{\r
+       std::vector<long>::iterator i=m_requesting.begin();\r
+       while(i!=m_requesting.end() && (*i)!=identityid)\r
+       {\r
+               i++;\r
+       }\r
+       if(i!=m_requesting.end())\r
+       {\r
+               m_requesting.erase(i);\r
+       }\r
+}\r
+\r
+void TrustListRequester::StartRequest(const long identityid)\r
+{\r
+       DateTime now;\r
+       FCPMessage message;\r
+       std::string publickey;\r
+       int index;\r
+       std::string indexstr;\r
+       std::string identityidstr;\r
+\r
+       SQLite3DB::Statement st=m_db->Prepare("SELECT PublicKey FROM tblIdentity WHERE IdentityID=?;");\r
+       st.Bind(0,identityid);\r
+       st.Step();\r
+\r
+       if(st.RowReturned())\r
+       {\r
+               st.ResultText(0,publickey);\r
+\r
+               now.SetToGMTime();\r
+\r
+               SQLite3DB::Statement st2=m_db->Prepare("SELECT MAX(RequestIndex) FROM tblTrustListRequests WHERE Day=? AND IdentityID=?;");\r
+               st2.Bind(0,now.Format("%Y-%m-%d"));\r
+               st2.Bind(1,identityid);\r
+               st2.Step();\r
+\r
+               index=0;\r
+               if(st2.RowReturned())\r
+               {\r
+                       if(st2.ResultNull(0)==false)\r
+                       {\r
+                               st2.ResultInt(0,index);\r
+                               index++;\r
+                       }\r
+               }\r
+               st2.Finalize();\r
+\r
+               StringFunctions::Convert(index,indexstr);\r
+               StringFunctions::Convert(identityid,identityidstr);\r
+\r
+               message.SetName("ClientGet");\r
+               message["URI"]=publickey+m_messagebase+"|"+now.Format("%Y-%m-%d")+"|TrustList|"+indexstr+".xml";\r
+               message["Identifier"]="TrustListRequester|"+identityidstr+"|"+indexstr+"|"+message["URI"];\r
+               message["ReturnType"]="direct";\r
+               message["MaxSize"]="1000000";                   // 1 MB\r
+\r
+               m_fcp->SendMessage(message);\r
+\r
+               m_requesting.push_back(identityid);\r
+       }\r
+       st.Finalize();\r
+\r
+       m_ids[identityid]=true;\r
+\r
+}\r