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 \r
 228         date.SetToGMTime();\r
 229 \r
 230         // 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
 231         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
 232         st.Step();\r
 233 \r
 234         m_ids.clear();\r
 235 \r
 236         while(st.RowReturned())\r
 237         {\r
 238                 st.ResultInt(0,id);\r
 239                 m_ids[id]=false;\r
 240                 st.Step();\r
 241         }\r
 242 }\r
 243 \r
 244 void TrustListRequester::Process()\r
 245 {\r
 246         // max is the smaller of the config value or the total number of identities we will request from\r
 247         long max=m_maxrequests>m_ids.size() ? m_ids.size() : m_maxrequests;\r
 248 \r
 249         // try to keep up to max requests going\r
 250         if(m_requesting.size()<max)\r
 251         {\r
 252                 std::map<long,bool>::iterator i=m_ids.begin();\r
 253                 while(i!=m_ids.end() && (*i).second==true)\r
 254                 {\r
 255                         i++;\r
 256                 }\r
 257 \r
 258                 if(i!=m_ids.end())\r
 259                 {\r
 260                         StartRequest((*i).first);\r
 261                 }\r
 262                 else\r
 263                 {\r
 264                         // we requested from all ids in the list, repopulate the list\r
 265                         PopulateIDList();\r
 266                 }\r
 267         }\r
 268         // 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
 269         // this will recheck for ids every minute\r
 270         DateTime now;\r
 271         now.SetToGMTime();\r
 272         if(m_tempdate<(now-(1.0/1440.0)))\r
 273         {\r
 274                 PopulateIDList();\r
 275                 m_tempdate=now;\r
 276         }\r
 277 \r
 278 }\r
 279 \r
 280 void TrustListRequester::RegisterWithThread(FreenetMasterThread *thread)\r
 281 {\r
 282         thread->RegisterFCPConnected(this);\r
 283         thread->RegisterFCPMessageHandler(this);\r
 284         thread->RegisterPeriodicProcessor(this);\r
 285 }\r
 286 \r
 287 void TrustListRequester::RemoveFromRequestList(const long identityid)\r
 288 {\r
 289         std::vector<long>::iterator i=m_requesting.begin();\r
 290         while(i!=m_requesting.end() && (*i)!=identityid)\r
 291         {\r
 292                 i++;\r
 293         }\r
 294         if(i!=m_requesting.end())\r
 295         {\r
 296                 m_requesting.erase(i);\r
 297         }\r
 298 }\r
 299 \r
 300 void TrustListRequester::StartRequest(const long identityid)\r
 301 {\r
 302         DateTime now;\r
 303         FCPMessage message;\r
 304         std::string publickey;\r
 305         int index;\r
 306         std::string indexstr;\r
 307         std::string identityidstr;\r
 308 \r
 309         SQLite3DB::Statement st=m_db->Prepare("SELECT PublicKey FROM tblIdentity WHERE IdentityID=?;");\r
 310         st.Bind(0,identityid);\r
 311         st.Step();\r
 312 \r
 313         if(st.RowReturned())\r
 314         {\r
 315                 st.ResultText(0,publickey);\r
 316 \r
 317                 now.SetToGMTime();\r
 318 \r
 319                 SQLite3DB::Statement st2=m_db->Prepare("SELECT MAX(RequestIndex) FROM tblTrustListRequests WHERE Day=? AND IdentityID=?;");\r
 320                 st2.Bind(0,now.Format("%Y-%m-%d"));\r
 321                 st2.Bind(1,identityid);\r
 322                 st2.Step();\r
 323 \r
 324                 index=0;\r
 325                 if(st2.RowReturned())\r
 326                 {\r
 327                         if(st2.ResultNull(0)==false)\r
 328                         {\r
 329                                 st2.ResultInt(0,index);\r
 330                                 index++;\r
 331                         }\r
 332                 }\r
 333                 st2.Finalize();\r
 334 \r
 335                 StringFunctions::Convert(index,indexstr);\r
 336                 StringFunctions::Convert(identityid,identityidstr);\r
 337 \r
 338                 message.SetName("ClientGet");\r
 339                 message["URI"]=publickey+m_messagebase+"|"+now.Format("%Y-%m-%d")+"|TrustList|"+indexstr+".xml";\r
 340                 message["Identifier"]="TrustListRequester|"+identityidstr+"|"+indexstr+"|"+message["URI"];\r
 341                 message["ReturnType"]="direct";\r
 342                 message["MaxSize"]="1000000";                   // 1 MB\r
 343 \r
 344                 m_fcp->SendMessage(message);\r
 345 \r
 346                 m_requesting.push_back(identityid);\r
 347         }\r
 348         st.Finalize();\r
 349 \r
 350         m_ids[identityid]=true;\r
 351 \r
 352 }\r