src/freenet/trustlistrequester.cpp

   1 #include "../../include/freenet/trustlistrequester.h"\r
   2 #include "../../include/option.h"\r
   3 #include "../../include/stringfunctions.h"\r
   4 #include "../../include/freenet/trustlistxml.h"\r
   5 \r
   6 #ifdef XMEM\r
   7         #include <xmem.h>\r
   8 #endif\r
   9 \r
  10 TrustListRequester::TrustListRequester()\r
  11 {\r
  12         Initialize();\r
  13 }\r
  14 \r
  15 TrustListRequester::TrustListRequester(FCPv2 *fcp):IFCPConnected(fcp)\r
  16 {\r
  17         Initialize();\r
  18 }\r
  19 \r
  20 void TrustListRequester::FCPConnected()\r
  21 {\r
  22         m_requesting.clear();\r
  23         PopulateIDList();\r
  24 }\r
  25 \r
  26 void TrustListRequester::FCPDisconnected()\r
  27 {\r
  28         \r
  29 }\r
  30 \r
  31 const bool TrustListRequester::HandleAllData(FCPMessage &message)\r
  32 {\r
  33         DateTime now;\r
  34         SQLite3DB::Statement st;\r
  35         SQLite3DB::Statement trustst;\r
  36         std::vector<std::string> idparts;\r
  37         long datalength;\r
  38         std::vector<char> data;\r
  39         TrustListXML xml;\r
  40         long identityid;\r
  41         long index;\r
  42 \r
  43         now.SetToGMTime();\r
  44         StringFunctions::Split(message["Identifier"],"|",idparts);\r
  45         StringFunctions::Convert(message["DataLength"],datalength);\r
  46         StringFunctions::Convert(idparts[1],identityid);\r
  47         StringFunctions::Convert(idparts[2],index);\r
  48 \r
  49         // wait for all data to be received from connection\r
  50         while(m_fcp->Connected() && m_fcp->ReceiveBufferSize()<datalength)\r
  51         {\r
  52                 m_fcp->Update(1);\r
  53         }\r
  54 \r
  55         // if we got disconnected- return immediately\r
  56         if(m_fcp->Connected()==false)\r
  57         {\r
  58                 return false;\r
  59         }\r
  60 \r
  61         // receive the file\r
  62         data.resize(datalength);\r
  63         m_fcp->ReceiveRaw(&data[0],datalength);\r
  64 \r
  65         // parse file into xml and update the database\r
  66         if(xml.ParseXML(std::string(data.begin(),data.end()))==true)\r
  67         {\r
  68 \r
  69                 // drop all existing peer trust from this identity - we will rebuild it when we go through each trust in the xml file\r
  70                 st=m_db->Prepare("DELETE FROM tblPeerTrust WHERE IdentityID=?;");\r
  71                 st.Bind(0,identityid);\r
  72                 st.Step();\r
  73                 st.Finalize();\r
  74 \r
  75                 st=m_db->Prepare("SELECT IdentityID FROM tblIdentity WHERE PublicKey=?;");\r
  76                 trustst=m_db->Prepare("INSERT INTO tblPeerTrust(IdentityID,TargetIdentityID,MessageTrust,TrustListTrust) VALUES(?,?,?,?);");\r
  77                 // loop through all trust entries in xml and add to database if we don't already know them\r
  78                 for(long i=0; i<xml.TrustCount(); i++)\r
  79                 {\r
  80                         int id;\r
  81                         std::string identity;\r
  82                         identity=xml.GetIdentity(i);\r
  83 \r
  84                         st.Bind(0,identity);\r
  85                         st.Step();\r
  86                         if(st.RowReturned()==false)\r
  87                         {\r
  88                                 m_db->ExecuteInsert("INSERT INTO tblIdentity(PublicKey,DateAdded) VALUES('"+identity+"','"+now.Format("%Y-%m-%d %H:%M:%S")+"');",(long &)id);\r
  89                         }\r
  90                         else\r
  91                         {\r
  92                                 st.ResultInt(0,id);\r
  93                         }\r
  94                         st.Reset();\r
  95 \r
  96                         //insert trust for this identity\r
  97                         trustst.Bind(0,identityid);\r
  98                         trustst.Bind(1,id);\r
  99                         trustst.Bind(2,xml.GetMessageTrust(i));\r
 100                         trustst.Bind(3,xml.GetTrustListTrust(i));\r
 101                         trustst.Step();\r
 102                         trustst.Reset();\r
 103 \r
 104                 }\r
 105                 trustst.Finalize();\r
 106                 st.Finalize();\r
 107 \r
 108                 st=m_db->Prepare("INSERT INTO tblTrustListRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'true');");\r
 109                 st.Bind(0,identityid);\r
 110                 st.Bind(1,idparts[4]);\r
 111                 st.Bind(2,index);\r
 112                 st.Step();\r
 113                 st.Finalize();\r
 114 \r
 115                 m_log->WriteLog(LogFile::LOGLEVEL_DEBUG,"TrustListRequester::HandleAllData parsed TrustList XML file : "+message["Identifier"]);\r
 116         }\r
 117         else\r
 118         {\r
 119                 // bad data - mark index\r
 120                 st=m_db->Prepare("INSERT INTO tblTrustListRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
 121                 st.Bind(0,identityid);\r
 122                 st.Bind(1,idparts[4]);\r
 123                 st.Bind(2,index);\r
 124                 st.Step();\r
 125                 st.Finalize();\r
 126 \r
 127                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"TrustListRequester::HandleAllData error parsing TrustList XML file : "+message["Identifier"]);\r
 128         }\r
 129 \r
 130         // remove this identityid from request list\r
 131         RemoveFromRequestList(identityid);\r
 132 \r
 133         return true;\r
 134 \r
 135 }\r
 136 \r
 137 const bool TrustListRequester::HandleGetFailed(FCPMessage &message)\r
 138 {\r
 139         DateTime now;\r
 140         SQLite3DB::Statement st;\r
 141         std::vector<std::string> idparts;\r
 142         long identityid;\r
 143         long index;\r
 144 \r
 145         now.SetToGMTime();\r
 146         StringFunctions::Split(message["Identifier"],"|",idparts);\r
 147         StringFunctions::Convert(idparts[1],identityid);\r
 148         StringFunctions::Convert(idparts[2],index);     \r
 149 \r
 150         // if this is a fatal error - insert index into database so we won't try to download this index again\r
 151         if(message["Fatal"]=="true")\r
 152         {\r
 153                 st=m_db->Prepare("INSERT INTO tblTrustListRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
 154                 st.Bind(0,identityid);\r
 155                 st.Bind(1,idparts[4]);\r
 156                 st.Bind(2,index);\r
 157                 st.Step();\r
 158                 st.Finalize();\r
 159 \r
 160                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"TrustListRequester::HandleGetFailed fatal error requesting "+message["Identifier"]);\r
 161         }\r
 162 \r
 163         // remove this identityid from request list\r
 164         RemoveFromRequestList(identityid);\r
 165 \r
 166         return true;\r
 167 \r
 168 }\r
 169 \r
 170 const bool TrustListRequester::HandleMessage(FCPMessage &message)\r
 171 {\r
 172 \r
 173         if(message["Identifier"].find("TrustListRequester")==0)\r
 174         {\r
 175                 if(message.GetName()=="DataFound")\r
 176                 {\r
 177                         return true;\r
 178                 }\r
 179 \r
 180                 if(message.GetName()=="AllData")\r
 181                 {\r
 182                         return HandleAllData(message);\r
 183                 }\r
 184 \r
 185                 if(message.GetName()=="GetFailed")\r
 186                 {\r
 187                         return HandleGetFailed(message);\r
 188                 }\r
 189 \r
 190                 if(message.GetName()=="IdentifierCollision")\r
 191                 {\r
 192                         // remove one of the ids from the requesting list\r
 193                         long identityid=0;\r
 194                         std::vector<std::string> idparts;\r
 195                         StringFunctions::Split(message["Identifier"],"|",idparts);\r
 196                         StringFunctions::Convert(idparts[1],identityid);\r
 197                         RemoveFromRequestList(identityid);\r
 198                         return true;\r
 199                 }\r
 200         }\r
 201 \r
 202         return false;\r
 203 }\r
 204 \r
 205 void TrustListRequester::Initialize()\r
 206 {\r
 207         std::string tempval="";\r
 208         Option::Instance()->Get("MaxIdentityRequests",tempval);\r
 209         StringFunctions::Convert(tempval,m_maxrequests);\r
 210         if(m_maxrequests<1)\r
 211         {\r
 212                 m_maxrequests=1;\r
 213                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"Option MaxTrustListRequests is currently set at "+tempval+".  It must be 1 or greater.");\r
 214         }\r
 215         if(m_maxrequests>100)\r
 216         {\r
 217                 m_log->WriteLog(LogFile::LOGLEVEL_WARNING,"Option MaxTrustListRequests is currently set at "+tempval+".  This value might be incorrectly configured.");\r
 218         }\r
 219         Option::Instance()->Get("MessageBase",m_messagebase);\r
 220         m_tempdate.SetToGMTime();\r
 221 }\r
 222 \r
 223 void TrustListRequester::PopulateIDList()\r
 224 {\r
 225         DateTime date;\r
 226         int id;\r
 227         std::string sql;\r
 228 \r
 229         date.SetToGMTime();\r
 230 \r
 231         // 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
 232         sql="SELECT IdentityID FROM tblIdentity ";\r
 233         sql+="WHERE Name IS NOT NULL AND Name <> '' AND 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') AND ( PeerTrustListTrust IS NULL OR PeerTrustListTrust>=(SELECT OptionValue FROM tblOption WHERE Option='MinPeerTrustListTrust') )";\r
 234         sql+="ORDER BY LocalMessageTrust+LocalTrustListTrust DESC, LastSeen;";\r
 235 \r
 236         SQLite3DB::Statement st=m_db->Prepare(sql);\r
 237         st.Step();\r
 238 \r
 239         m_ids.clear();\r
 240 \r
 241         while(st.RowReturned())\r
 242         {\r
 243                 st.ResultInt(0,id);\r
 244                 m_ids[id]=false;\r
 245                 st.Step();\r
 246         }\r
 247 }\r
 248 \r
 249 void TrustListRequester::Process()\r
 250 {\r
 251         // max is the smaller of the config value or the total number of identities we will request from\r
 252         long max=m_maxrequests>m_ids.size() ? m_ids.size() : m_maxrequests;\r
 253 \r
 254         // try to keep up to max requests going\r
 255         if(m_requesting.size()<max)\r
 256         {\r
 257                 std::map<long,bool>::iterator i=m_ids.begin();\r
 258                 while(i!=m_ids.end() && (*i).second==true)\r
 259                 {\r
 260                         i++;\r
 261                 }\r
 262 \r
 263                 if(i!=m_ids.end())\r
 264                 {\r
 265                         StartRequest((*i).first);\r
 266                 }\r
 267                 else\r
 268                 {\r
 269                         // we requested from all ids in the list, repopulate the list\r
 270                         PopulateIDList();\r
 271                 }\r
 272         }\r
 273         // 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
 274         // this will recheck for ids every minute\r
 275         DateTime now;\r
 276         now.SetToGMTime();\r
 277         if(m_ids.size()==0 && m_tempdate<(now-(1.0/1440.0)))\r
 278         {\r
 279                 PopulateIDList();\r
 280                 m_tempdate=now;\r
 281         }\r
 282 \r
 283 }\r
 284 \r
 285 void TrustListRequester::RegisterWithThread(FreenetMasterThread *thread)\r
 286 {\r
 287         thread->RegisterFCPConnected(this);\r
 288         thread->RegisterFCPMessageHandler(this);\r
 289         thread->RegisterPeriodicProcessor(this);\r
 290 }\r
 291 \r
 292 void TrustListRequester::RemoveFromRequestList(const long identityid)\r
 293 {\r
 294         std::vector<long>::iterator i=m_requesting.begin();\r
 295         while(i!=m_requesting.end() && (*i)!=identityid)\r
 296         {\r
 297                 i++;\r
 298         }\r
 299         if(i!=m_requesting.end())\r
 300         {\r
 301                 m_requesting.erase(i);\r
 302         }\r
 303 }\r
 304 \r
 305 void TrustListRequester::StartRequest(const long identityid)\r
 306 {\r
 307         DateTime now;\r
 308         FCPMessage message;\r
 309         std::string publickey;\r
 310         int index;\r
 311         std::string indexstr;\r
 312         std::string identityidstr;\r
 313 \r
 314         SQLite3DB::Statement st=m_db->Prepare("SELECT PublicKey FROM tblIdentity WHERE IdentityID=?;");\r
 315         st.Bind(0,identityid);\r
 316         st.Step();\r
 317 \r
 318         if(st.RowReturned())\r
 319         {\r
 320                 st.ResultText(0,publickey);\r
 321 \r
 322                 now.SetToGMTime();\r
 323 \r
 324                 SQLite3DB::Statement st2=m_db->Prepare("SELECT MAX(RequestIndex) FROM tblTrustListRequests WHERE Day=? AND IdentityID=?;");\r
 325                 st2.Bind(0,now.Format("%Y-%m-%d"));\r
 326                 st2.Bind(1,identityid);\r
 327                 st2.Step();\r
 328 \r
 329                 index=0;\r
 330                 if(st2.RowReturned())\r
 331                 {\r
 332                         if(st2.ResultNull(0)==false)\r
 333                         {\r
 334                                 st2.ResultInt(0,index);\r
 335                                 index++;\r
 336                         }\r
 337                 }\r
 338                 st2.Finalize();\r
 339 \r
 340                 StringFunctions::Convert(index,indexstr);\r
 341                 StringFunctions::Convert(identityid,identityidstr);\r
 342 \r
 343                 message.SetName("ClientGet");\r
 344                 message["URI"]=publickey+m_messagebase+"|"+now.Format("%Y-%m-%d")+"|TrustList|"+indexstr+".xml";\r
 345                 message["Identifier"]="TrustListRequester|"+identityidstr+"|"+indexstr+"|"+message["URI"];\r
 346                 message["ReturnType"]="direct";\r
 347                 message["MaxSize"]="1000000";                   // 1 MB\r
 348 \r
 349                 m_fcp->SendMessage(message);\r
 350 \r
 351                 m_requesting.push_back(identityid);\r
 352         }\r
 353         st.Finalize();\r
 354 \r
 355         m_ids[identityid]=true;\r
 356 \r
 357 }\r