src/freenet/introductionpuzzlerequester.cpp

   1 #include "../../include/freenet/introductionpuzzlerequester.h"\r
   2 #include "../../include/freenet/introductionpuzzlexml.h"\r
   3 #include "../../include/option.h"\r
   4 #include "../../include/stringfunctions.h"\r
   5 \r
   6 #ifdef XMEM\r
   7         #include <xmem.h>\r
   8 #endif\r
   9 \r
  10 IntroductionPuzzleRequester::IntroductionPuzzleRequester()\r
  11 {\r
  12         Initialize();\r
  13 }\r
  14 \r
  15 IntroductionPuzzleRequester::IntroductionPuzzleRequester(FCPv2 *fcp):IFCPConnected(fcp)\r
  16 {\r
  17         Initialize();\r
  18 }\r
  19 \r
  20 void IntroductionPuzzleRequester::FCPConnected()\r
  21 {\r
  22         m_requesting.clear();\r
  23         PopulateIDList();\r
  24 }\r
  25 \r
  26 void IntroductionPuzzleRequester::FCPDisconnected()\r
  27 {\r
  28         \r
  29 }\r
  30 \r
  31 const bool IntroductionPuzzleRequester::HandleAllData(FCPMessage &message)\r
  32 {\r
  33         DateTime now;\r
  34         SQLite3DB::Statement st;\r
  35         std::vector<std::string> idparts;\r
  36         long datalength;\r
  37         std::vector<char> data;\r
  38         IntroductionPuzzleXML xml;\r
  39         long identityid;\r
  40         long index;\r
  41 \r
  42         now.SetToGMTime();\r
  43         StringFunctions::Split(message["Identifier"],"|",idparts);\r
  44         StringFunctions::Convert(message["DataLength"],datalength);\r
  45         StringFunctions::Convert(idparts[1],identityid);\r
  46         StringFunctions::Convert(idparts[2],index);\r
  47 \r
  48         // wait for all data to be received from connection\r
  49         while(m_fcp->Connected() && m_fcp->ReceiveBufferSize()<datalength)\r
  50         {\r
  51                 m_fcp->Update(1);\r
  52         }\r
  53 \r
  54         // if we got disconnected- return immediately\r
  55         if(m_fcp->Connected()==false)\r
  56         {\r
  57                 return false;\r
  58         }\r
  59 \r
  60         // receive the file\r
  61         data.resize(datalength);\r
  62         m_fcp->ReceiveRaw(&data[0],datalength);\r
  63 \r
  64         // parse file into xml and update the database\r
  65         if(xml.ParseXML(std::string(data.begin(),data.end()))==true)\r
  66         {\r
  67 \r
  68                 // TODO - check if last part of UUID matches public key of identity who inserted it\r
  69 \r
  70                 st=m_db->Prepare("INSERT INTO tblIntroductionPuzzleRequests(IdentityID,Day,RequestIndex,Found,UUID,Type,MimeType,PuzzleData) VALUES(?,?,?,?,?,?,?,?);");\r
  71                 st.Bind(0,identityid);\r
  72                 st.Bind(1,idparts[4]);\r
  73                 st.Bind(2,index);\r
  74                 st.Bind(3,"true");\r
  75                 st.Bind(4,xml.GetUUID());\r
  76                 st.Bind(5,xml.GetType());\r
  77                 st.Bind(6,xml.GetMimeType());\r
  78                 st.Bind(7,xml.GetPuzzleData());\r
  79                 st.Step();\r
  80                 st.Finalize();\r
  81 \r
  82                 m_log->WriteLog(LogFile::LOGLEVEL_DEBUG,"IntroductionPuzzleRequester::HandleAllData parsed IntroductionPuzzle XML file : "+message["Identifier"]);\r
  83         }\r
  84         else\r
  85         {\r
  86                 // bad data - mark index\r
  87                 st=m_db->Prepare("INSERT INTO tblIntroductionPuzzleRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
  88                 st.Bind(0,identityid);\r
  89                 st.Bind(1,idparts[4]);\r
  90                 st.Bind(2,index);\r
  91                 st.Step();\r
  92                 st.Finalize();\r
  93 \r
  94                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"IntroductionPuzzleRequester::HandleAllData error parsing IntroductionPuzzle XML file : "+message["Identifier"]);\r
  95         }\r
  96 \r
  97         // remove this identityid from request list\r
  98         RemoveFromRequestList(identityid);\r
  99 \r
 100         return true;\r
 101 \r
 102 }\r
 103 \r
 104 const bool IntroductionPuzzleRequester::HandleGetFailed(FCPMessage &message)\r
 105 {\r
 106         DateTime now;\r
 107         SQLite3DB::Statement st;\r
 108         std::vector<std::string> idparts;\r
 109         long identityid;\r
 110         long index;\r
 111 \r
 112         now.SetToGMTime();\r
 113         StringFunctions::Split(message["Identifier"],"|",idparts);\r
 114         StringFunctions::Convert(idparts[1],identityid);\r
 115         StringFunctions::Convert(idparts[2],index);     \r
 116 \r
 117         // if this is a fatal error - insert index into database so we won't try to download this index again\r
 118         if(message["Fatal"]=="true")\r
 119         {\r
 120                 st=m_db->Prepare("INSERT INTO tblIntroductionPuzzleRequests(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,"IntroductionPuzzleRequester::HandleGetFailed fatal error requesting "+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 IntroductionPuzzleRequester::HandleMessage(FCPMessage &message)\r
 138 {\r
 139 \r
 140         if(message["Identifier"].find("IntroductionPuzzleRequester")==0)\r
 141         {\r
 142                 if(message.GetName()=="DataFound")\r
 143                 {\r
 144                         return true;\r
 145                 }\r
 146 \r
 147                 if(message.GetName()=="AllData")\r
 148                 {\r
 149                         return HandleAllData(message);\r
 150                 }\r
 151 \r
 152                 if(message.GetName()=="GetFailed")\r
 153                 {\r
 154                         return HandleGetFailed(message);\r
 155                 }\r
 156                 \r
 157                 if(message.GetName()=="IdentifierCollision")\r
 158                 {\r
 159                         // remove one of the ids from the requesting list\r
 160                         long identityid=0;\r
 161                         std::vector<std::string> idparts;\r
 162                         StringFunctions::Split(message["Identifier"],"|",idparts);\r
 163                         StringFunctions::Convert(idparts[1],identityid);\r
 164                         RemoveFromRequestList(identityid);\r
 165                         return true;\r
 166                 }\r
 167         }\r
 168 \r
 169         return false;\r
 170 }\r
 171 \r
 172 void IntroductionPuzzleRequester::Initialize()\r
 173 {\r
 174         std::string tempval="";\r
 175         Option::Instance()->Get("MaxIntroductionPuzzleRequests",tempval);\r
 176         StringFunctions::Convert(tempval,m_maxrequests);\r
 177         if(m_maxrequests<1)\r
 178         {\r
 179                 m_maxrequests=1;\r
 180                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"Option MaxIntroductionPuzzleRequests is currently set at "+tempval+".  It must be 1 or greater.");\r
 181         }\r
 182         if(m_maxrequests>100)\r
 183         {\r
 184                 m_log->WriteLog(LogFile::LOGLEVEL_WARNING,"Option MaxIntroductionPuzzleRequests is currently set at "+tempval+".  This value might be incorrectly configured.");\r
 185         }\r
 186         Option::Instance()->Get("MessageBase",m_messagebase);\r
 187         m_tempdate.SetToGMTime();\r
 188 }\r
 189 \r
 190 void IntroductionPuzzleRequester::PopulateIDList()\r
 191 {\r
 192         DateTime now;\r
 193         int id;\r
 194         std::string limitnum="30";\r
 195 \r
 196         // if we don't have an identity that we haven't seen yet, then set limit to 5\r
 197         SQLite3DB::Statement st=m_db->Prepare("SELECT tblLocalIdentity.LocalIdentityID FROM tblLocalIdentity LEFT JOIN tblIdentity ON tblLocalIdentity.PublicKey=tblIdentity.PublicKey WHERE tblIdentity.IdentityID IS NULL;");\r
 198         st.Step();\r
 199         if(!st.RowReturned())\r
 200         {\r
 201                 limitnum="5";\r
 202         }\r
 203         st.Finalize();\r
 204 \r
 205         now.SetToGMTime();\r
 206 \r
 207         // select identities that aren't single use and have been seen today ( order by trust DESC and limit to limitnum )\r
 208         st=m_db->Prepare("SELECT IdentityID FROM tblIdentity WHERE PublicKey IS NOT NULL AND PublicKey <> '' AND SingleUse='false' AND LastSeen>='"+now.Format("%Y-%m-%d")+"' ORDER BY LocalMessageTrust DESC LIMIT 0,"+limitnum+";");\r
 209         st.Step();\r
 210 \r
 211         m_ids.clear();\r
 212 \r
 213         while(st.RowReturned())\r
 214         {\r
 215                 st.ResultInt(0,id);\r
 216                 m_ids[id]=false;\r
 217                 st.Step();\r
 218         }\r
 219 }\r
 220 \r
 221 void IntroductionPuzzleRequester::Process()\r
 222 {\r
 223         // max is the smaller of the config value or the total number of identities we will request from\r
 224         long max=m_maxrequests>m_ids.size() ? m_ids.size() : m_maxrequests;\r
 225 \r
 226         // try to keep up to max requests going\r
 227         if(m_requesting.size()<max)\r
 228         {\r
 229                 std::map<long,bool>::iterator i=m_ids.begin();\r
 230                 while(i!=m_ids.end() && (*i).second==true)\r
 231                 {\r
 232                         i++;\r
 233                 }\r
 234 \r
 235                 if(i!=m_ids.end())\r
 236                 {\r
 237                         StartRequest((*i).first);\r
 238                 }\r
 239                 else\r
 240                 {\r
 241                         // we requested from all ids in the list, repopulate the list\r
 242                         PopulateIDList();\r
 243                 }\r
 244         }\r
 245         // 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
 246         // this will recheck for ids every minute\r
 247         DateTime now;\r
 248         now.SetToGMTime();\r
 249         if(m_ids.size()==0 && m_tempdate<(now-(1.0/1440.0)))\r
 250         {\r
 251                 PopulateIDList();\r
 252                 m_tempdate=now;\r
 253         }\r
 254 }\r
 255 \r
 256 void IntroductionPuzzleRequester::RegisterWithThread(FreenetMasterThread *thread)\r
 257 {\r
 258         thread->RegisterFCPConnected(this);\r
 259         thread->RegisterFCPMessageHandler(this);\r
 260         thread->RegisterPeriodicProcessor(this);\r
 261 }\r
 262 \r
 263 void IntroductionPuzzleRequester::RemoveFromRequestList(const long identityid)\r
 264 {\r
 265         std::vector<long>::iterator i=m_requesting.begin();\r
 266         while(i!=m_requesting.end() && (*i)!=identityid)\r
 267         {\r
 268                 i++;\r
 269         }\r
 270         if(i!=m_requesting.end())\r
 271         {\r
 272                 m_requesting.erase(i);\r
 273         }\r
 274 }\r
 275 \r
 276 void IntroductionPuzzleRequester::StartRequest(const long identityid)\r
 277 {\r
 278         DateTime now;\r
 279         FCPMessage message;\r
 280         std::string publickey;\r
 281         int index;\r
 282         std::string indexstr;\r
 283         std::string identityidstr;\r
 284 \r
 285         SQLite3DB::Statement st=m_db->Prepare("SELECT PublicKey FROM tblIdentity WHERE IdentityID=?;");\r
 286         st.Bind(0,identityid);\r
 287         st.Step();\r
 288 \r
 289         if(st.RowReturned())\r
 290         {\r
 291                 st.ResultText(0,publickey);\r
 292 \r
 293                 now.SetToGMTime();\r
 294 \r
 295                 SQLite3DB::Statement st2=m_db->Prepare("SELECT MAX(RequestIndex) FROM tblIntroductionPuzzleRequests WHERE Day=? AND IdentityID=?;");\r
 296                 st2.Bind(0,now.Format("%Y-%m-%d"));\r
 297                 st2.Bind(1,identityid);\r
 298                 st2.Step();\r
 299 \r
 300                 index=0;\r
 301                 if(st2.RowReturned())\r
 302                 {\r
 303                         if(st2.ResultNull(0)==false)\r
 304                         {\r
 305                                 st2.ResultInt(0,index);\r
 306                                 index++;\r
 307                         }\r
 308                 }\r
 309                 st2.Finalize();\r
 310 \r
 311                 StringFunctions::Convert(index,indexstr);\r
 312                 StringFunctions::Convert(identityid,identityidstr);\r
 313 \r
 314                 message.SetName("ClientGet");\r
 315                 message["URI"]=publickey+m_messagebase+"|"+now.Format("%Y-%m-%d")+"|IntroductionPuzzle|"+indexstr+".xml";\r
 316                 message["Identifier"]="IntroductionPuzzleRequester|"+identityidstr+"|"+indexstr+"|"+message["URI"];\r
 317                 message["ReturnType"]="direct";\r
 318                 message["MaxSize"]="1000000";           // 1 MB\r
 319 \r
 320                 m_fcp->SendMessage(message);\r
 321                 \r
 322                 m_requesting.push_back(identityid);\r
 323         }\r
 324 \r
 325         m_ids[identityid]=true;\r
 326 }\r