src/freenet/identityrequester.cpp

   1 #include "../../include/freenet/identityrequester.h"\r
   2 #include "../../include/freenet/identityxml.h"\r
   3 #include "../../include/stringfunctions.h"\r
   4 #include "../../include/option.h"\r
   5 #include "../../include/datetime.h"\r
   6 \r
   7 #ifdef XMEM\r
   8         #include <xmem.h>\r
   9 #endif\r
  10 \r
  11 IdentityRequester::IdentityRequester()\r
  12 {\r
  13         Initialize();\r
  14 }\r
  15 \r
  16 IdentityRequester::IdentityRequester(FCPv2 *fcp):IFCPConnected(fcp)\r
  17 {\r
  18         Initialize();\r
  19 }\r
  20 \r
  21 void IdentityRequester::FCPConnected()\r
  22 {\r
  23         m_requesting.clear();\r
  24         PopulateIDList();\r
  25 }\r
  26 \r
  27 void IdentityRequester::FCPDisconnected()\r
  28 {\r
  29         \r
  30 }\r
  31 \r
  32 const bool IdentityRequester::HandleAllData(FCPMessage &message)\r
  33 {\r
  34         DateTime now;\r
  35         SQLite3DB::Statement st;\r
  36         std::vector<std::string> idparts;\r
  37         long datalength;\r
  38         std::vector<char> data;\r
  39         IdentityXML 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                 st=m_db->Prepare("UPDATE tblIdentity SET Name=?, SingleUse=?, LastSeen=?, PublishTrustList=?, PublishBoardList=? WHERE IdentityID=?");\r
  70                 st.Bind(0,xml.GetName());\r
  71                 if(xml.GetSingleUse()==true)\r
  72                 {\r
  73                         st.Bind(1,"true");\r
  74                 }\r
  75                 else\r
  76                 {\r
  77                         st.Bind(1,"false");\r
  78                 }\r
  79                 st.Bind(2,now.Format("%Y-%m-%d %H:%M:%S"));\r
  80                 if(xml.GetPublishTrustList()==true)\r
  81                 {\r
  82                         st.Bind(3,"true");\r
  83                 }\r
  84                 else\r
  85                 {\r
  86                         st.Bind(3,"false");\r
  87                 }\r
  88                 if(xml.GetPublishBoardList()==true)\r
  89                 {\r
  90                         st.Bind(4,"true");\r
  91                 }\r
  92                 else\r
  93                 {\r
  94                         st.Bind(4,"false");\r
  95                 }\r
  96                 st.Bind(5,identityid);\r
  97                 st.Step();\r
  98                 st.Finalize();\r
  99 \r
 100                 st=m_db->Prepare("INSERT INTO tblIdentityRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'true');");\r
 101                 st.Bind(0,identityid);\r
 102                 st.Bind(1,idparts[4]);\r
 103                 st.Bind(2,index);\r
 104                 st.Step();\r
 105                 st.Finalize();\r
 106 \r
 107                 m_log->WriteLog(LogFile::LOGLEVEL_DEBUG,"IdentityRequester::HandleAllData parsed Identity XML file : "+message["Identifier"]);\r
 108         }\r
 109         else\r
 110         {\r
 111                 // bad data - mark index\r
 112                 st=m_db->Prepare("INSERT INTO tblIdentityRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
 113                 st.Bind(0,identityid);\r
 114                 st.Bind(1,idparts[4]);\r
 115                 st.Bind(2,index);\r
 116                 st.Step();\r
 117                 st.Finalize();\r
 118 \r
 119                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"IdentityRequester::HandleAllData error parsing Identity XML file : "+message["Identifier"]);\r
 120         }\r
 121 \r
 122         // remove this identityid from request list\r
 123         RemoveFromRequestList(identityid);\r
 124 \r
 125         return true;\r
 126 \r
 127 }\r
 128 \r
 129 const bool IdentityRequester::HandleGetFailed(FCPMessage &message)\r
 130 {\r
 131         DateTime now;\r
 132         SQLite3DB::Statement st;\r
 133         std::vector<std::string> idparts;\r
 134         long identityid;\r
 135         long index;\r
 136 \r
 137         now.SetToGMTime();\r
 138         StringFunctions::Split(message["Identifier"],"|",idparts);\r
 139         StringFunctions::Convert(idparts[1],identityid);\r
 140         StringFunctions::Convert(idparts[2],index);     \r
 141 \r
 142         // if this is a fatal error - insert index into database so we won't try to download this index again\r
 143         if(message["Fatal"]=="true")\r
 144         {\r
 145                 st=m_db->Prepare("INSERT INTO tblIdentityRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
 146                 st.Bind(0,identityid);\r
 147                 st.Bind(1,idparts[4]);\r
 148                 st.Bind(2,index);\r
 149                 st.Step();\r
 150                 st.Finalize();\r
 151 \r
 152                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"IdentityRequester::HandleGetFailed fatal error requesting "+message["Identifier"]);\r
 153         }\r
 154 \r
 155         // remove this identityid from request list\r
 156         RemoveFromRequestList(identityid);\r
 157 \r
 158         return true;\r
 159 \r
 160 }\r
 161 \r
 162 const bool IdentityRequester::HandleMessage(FCPMessage &message)\r
 163 {\r
 164 \r
 165         if(message["Identifier"].find("IdentityRequester")==0)\r
 166         {\r
 167                 if(message.GetName()=="DataFound")\r
 168                 {\r
 169                         return true;\r
 170                 }\r
 171 \r
 172                 if(message.GetName()=="AllData")\r
 173                 {\r
 174                         return HandleAllData(message);\r
 175                 }\r
 176 \r
 177                 if(message.GetName()=="GetFailed")\r
 178                 {\r
 179                         return HandleGetFailed(message);\r
 180                 }\r
 181 \r
 182                 if(message.GetName()=="IdentifierCollision")\r
 183                 {\r
 184                         // remove one of the ids from the requesting list\r
 185                         long identityid=0;\r
 186                         std::vector<std::string> idparts;\r
 187                         StringFunctions::Split(message["Identifier"],"|",idparts);\r
 188                         StringFunctions::Convert(idparts[1],identityid);\r
 189                         RemoveFromRequestList(identityid);\r
 190                         return true;\r
 191                 }\r
 192         }\r
 193 \r
 194         return false;\r
 195 }\r
 196 \r
 197 void IdentityRequester::Initialize()\r
 198 {\r
 199         std::string tempval="";\r
 200         Option::instance()->Get("MaxIdentityRequests",tempval);\r
 201         StringFunctions::Convert(tempval,m_maxrequests);\r
 202         if(m_maxrequests<1)\r
 203         {\r
 204                 m_maxrequests=1;\r
 205                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"Option MaxIdentityRequests is currently set at "+tempval+".  It must be 1 or greater.");\r
 206         }\r
 207         if(m_maxrequests>100)\r
 208         {\r
 209                 m_log->WriteLog(LogFile::LOGLEVEL_WARNING,"Option MaxIdentityRequests is currently set at "+tempval+".  This value might be incorrectly configured.");\r
 210         }\r
 211         Option::instance()->Get("MessageBase",m_messagebase);\r
 212         m_tempdate.SetToGMTime();\r
 213 }\r
 214 \r
 215 void IdentityRequester::PopulateIDList()\r
 216 {\r
 217         DateTime date;\r
 218         int id;\r
 219 \r
 220         date.SetToGMTime();\r
 221         date.Add(0,0,-1);\r
 222 \r
 223         // select identities we want to query (haven't seen in last hour) - sort by their trust level (descending) with secondary sort on how long ago we saw them (ascending)\r
 224         SQLite3DB::Statement st=m_db->Prepare("SELECT IdentityID FROM tblIdentity WHERE PublicKey IS NOT NULL AND PublicKey <> '' AND (LastSeen IS NULL OR LastSeen<='"+date.Format("%Y-%m-%d %H:%M:%S")+"') ORDER BY LocalMessageTrust+LocalTrustListTrust DESC, LastSeen;");\r
 225         st.Step();\r
 226 \r
 227         m_ids.clear();\r
 228 \r
 229         while(st.RowReturned())\r
 230         {\r
 231                 st.ResultInt(0,id);\r
 232                 m_ids[id]=false;\r
 233                 st.Step();\r
 234         }\r
 235 }\r
 236 \r
 237 void IdentityRequester::Process()\r
 238 {\r
 239         // max is the smaller of the config value or the total number of identities we will request from\r
 240         long max=m_maxrequests>m_ids.size() ? m_ids.size() : m_maxrequests;\r
 241 \r
 242         // try to keep up to max requests going\r
 243         if(m_requesting.size()<max)\r
 244         {\r
 245                 std::map<long,bool>::iterator i=m_ids.begin();\r
 246                 while(i!=m_ids.end() && (*i).second==true)\r
 247                 {\r
 248                         i++;\r
 249                 }\r
 250 \r
 251                 if(i!=m_ids.end())\r
 252                 {\r
 253                         StartRequest((*i).first);\r
 254                 }\r
 255                 else\r
 256                 {\r
 257                         // we requested from all ids in the list, repopulate the list\r
 258                         PopulateIDList();\r
 259                 }\r
 260         }\r
 261         // 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
 262         // this will recheck for ids every minute\r
 263         DateTime now;\r
 264         now.SetToGMTime();\r
 265         if(m_tempdate<(now-(1.0/1440.0)))\r
 266         {\r
 267                 PopulateIDList();\r
 268                 m_tempdate=now;\r
 269         }\r
 270 \r
 271 }\r
 272 \r
 273 void IdentityRequester::RemoveFromRequestList(const long identityid)\r
 274 {\r
 275         std::vector<long>::iterator i=m_requesting.begin();\r
 276         while(i!=m_requesting.end() && (*i)!=identityid)\r
 277         {\r
 278                 i++;\r
 279         }\r
 280         if(i!=m_requesting.end())\r
 281         {\r
 282                 m_requesting.erase(i);\r
 283         }\r
 284 }\r
 285 \r
 286 void IdentityRequester::RegisterWithThread(FreenetMasterThread *thread)\r
 287 {\r
 288         thread->RegisterFCPConnected(this);\r
 289         thread->RegisterFCPMessageHandler(this);\r
 290         thread->RegisterPeriodicProcessor(this);\r
 291 }\r
 292 \r
 293 void IdentityRequester::StartRequest(const long identityid)\r
 294 {\r
 295         DateTime now;\r
 296         FCPMessage message;\r
 297         std::string publickey;\r
 298         int index;\r
 299         std::string indexstr;\r
 300         std::string identityidstr;\r
 301 \r
 302         SQLite3DB::Statement st=m_db->Prepare("SELECT PublicKey FROM tblIdentity WHERE IdentityID=?;");\r
 303         st.Bind(0,identityid);\r
 304         st.Step();\r
 305 \r
 306         if(st.RowReturned())\r
 307         {\r
 308                 st.ResultText(0,publickey);\r
 309 \r
 310                 now.SetToGMTime();\r
 311 \r
 312                 SQLite3DB::Statement st2=m_db->Prepare("SELECT MAX(RequestIndex) FROM tblIdentityRequests WHERE Day=? AND IdentityID=?;");\r
 313                 st2.Bind(0,now.Format("%Y-%m-%d"));\r
 314                 st2.Bind(1,identityid);\r
 315                 st2.Step();\r
 316 \r
 317                 index=0;\r
 318                 if(st2.RowReturned())\r
 319                 {\r
 320                         if(st2.ResultNull(0)==false)\r
 321                         {\r
 322                                 st2.ResultInt(0,index);\r
 323                                 index++;\r
 324                         }\r
 325                 }\r
 326                 st2.Finalize();\r
 327 \r
 328                 StringFunctions::Convert(index,indexstr);\r
 329                 StringFunctions::Convert(identityid,identityidstr);\r
 330 \r
 331                 message.SetName("ClientGet");\r
 332                 message["URI"]=publickey+m_messagebase+"|"+now.Format("%Y-%m-%d")+"|Identity|"+indexstr+".xml";\r
 333                 message["Identifier"]="IdentityRequester|"+identityidstr+"|"+indexstr+"|"+message["URI"];\r
 334                 message["ReturnType"]="direct";\r
 335                 message["MaxSize"]="10000";                     // 10 KB\r
 336 \r
 337                 m_fcp->SendMessage(message);\r
 338 \r
 339                 m_requesting.push_back(identityid);\r
 340         }\r
 341         st.Finalize();\r
 342 \r
 343         m_ids[identityid]=true;\r
 344 \r
 345 }\r