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=? 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                 st.Bind(3,identityid);\r
  81                 st.Step();\r
  82                 st.Finalize();\r
  83 \r
  84                 st=m_db->Prepare("INSERT INTO tblIdentityRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'true');");\r
  85                 st.Bind(0,identityid);\r
  86                 st.Bind(1,idparts[4]);\r
  87                 st.Bind(2,index);\r
  88                 st.Step();\r
  89                 st.Finalize();\r
  90 \r
  91                 m_log->WriteLog(LogFile::LOGLEVEL_DEBUG,__FUNCTION__" parsed Identity XML file : "+message["Identifier"]);\r
  92         }\r
  93         else\r
  94         {\r
  95                 // bad data - mark index\r
  96                 st=m_db->Prepare("INSERT INTO tblIdentityRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
  97                 st.Bind(0,identityid);\r
  98                 st.Bind(1,idparts[4]);\r
  99                 st.Bind(2,index);\r
 100                 st.Step();\r
 101                 st.Finalize();\r
 102 \r
 103                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,__FUNCTION__" error parsing Identity XML file : "+message["Identifier"]);\r
 104         }\r
 105 \r
 106         // remove this identityid from request list\r
 107         RemoveFromRequestList(identityid);\r
 108 \r
 109         return true;\r
 110 \r
 111 }\r
 112 \r
 113 const bool IdentityRequester::HandleGetFailed(FCPMessage &message)\r
 114 {\r
 115         DateTime now;\r
 116         SQLite3DB::Statement st;\r
 117         std::vector<std::string> idparts;\r
 118         long identityid;\r
 119         long index;\r
 120 \r
 121         now.SetToGMTime();\r
 122         StringFunctions::Split(message["Identifier"],"|",idparts);\r
 123         StringFunctions::Convert(idparts[1],identityid);\r
 124         StringFunctions::Convert(idparts[2],index);     \r
 125 \r
 126         // if this is a fatal error - insert index into database so we won't try to download this index again\r
 127         if(message["Fatal"]=="true")\r
 128         {\r
 129                 st=m_db->Prepare("INSERT INTO tblIdentityRequests(IdentityID,Day,RequestIndex,Found) VALUES(?,?,?,'false');");\r
 130                 st.Bind(0,identityid);\r
 131                 st.Bind(1,idparts[4]);\r
 132                 st.Bind(2,index);\r
 133                 st.Step();\r
 134                 st.Finalize();\r
 135 \r
 136                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,__FUNCTION__" fatal error requesting "+message["Identifier"]);\r
 137         }\r
 138 \r
 139         // remove this identityid from request list\r
 140         RemoveFromRequestList(identityid);\r
 141 \r
 142         return true;\r
 143 \r
 144 }\r
 145 \r
 146 const bool IdentityRequester::HandleMessage(FCPMessage &message)\r
 147 {\r
 148 \r
 149         if(message["Identifier"].find("IdentityRequester")==0)\r
 150         {\r
 151                 if(message.GetName()=="DataFound")\r
 152                 {\r
 153                         return true;\r
 154                 }\r
 155 \r
 156                 if(message.GetName()=="AllData")\r
 157                 {\r
 158                         return HandleAllData(message);\r
 159                 }\r
 160 \r
 161                 if(message.GetName()=="GetFailed")\r
 162                 {\r
 163                         return HandleGetFailed(message);\r
 164                 }\r
 165 \r
 166                 if(message.GetName()=="IdentifierCollision")\r
 167                 {\r
 168                         // remove one of the ids from the requesting list\r
 169                         long identityid=0;\r
 170                         std::vector<std::string> idparts;\r
 171                         StringFunctions::Split(message["Identifier"],"|",idparts);\r
 172                         StringFunctions::Convert(idparts[1],identityid);\r
 173                         RemoveFromRequestList(identityid);\r
 174                         return true;\r
 175                 }\r
 176         }\r
 177 \r
 178         return false;\r
 179 }\r
 180 \r
 181 void IdentityRequester::Initialize()\r
 182 {\r
 183         std::string tempval="";\r
 184         Option::instance()->Get("MaxIdentityRequests",tempval);\r
 185         StringFunctions::Convert(tempval,m_maxrequests);\r
 186         if(m_maxrequests<1)\r
 187         {\r
 188                 m_maxrequests=1;\r
 189                 m_log->WriteLog(LogFile::LOGLEVEL_ERROR,"Option MaxIdentityRequests is currently set at "+tempval+".  It must be 1 or greater.");\r
 190         }\r
 191         if(m_maxrequests>100)\r
 192         {\r
 193                 m_log->WriteLog(LogFile::LOGLEVEL_WARNING,"Option MaxIdentityRequests is currently set at "+tempval+".  This value might be incorrectly configured.");\r
 194         }\r
 195         Option::instance()->Get("MessageBase",m_messagebase);\r
 196         m_tempdate.SetToGMTime();\r
 197 }\r
 198 \r
 199 void IdentityRequester::PopulateIDList()\r
 200 {\r
 201         DateTime date;\r
 202         int id;\r
 203 \r
 204         date.SetToGMTime();\r
 205         date.Add(0,0,-1);\r
 206 \r
 207         // 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
 208         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
 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 IdentityRequester::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_tempdate<(now-(1.0/1440.0)))\r
 250         {\r
 251                 PopulateIDList();\r
 252                 m_tempdate=now;\r
 253         }\r
 254 \r
 255 }\r
 256 \r
 257 void IdentityRequester::RemoveFromRequestList(const long identityid)\r
 258 {\r
 259         std::vector<long>::iterator i=m_requesting.begin();\r
 260         while(i!=m_requesting.end() && (*i)!=identityid)\r
 261         {\r
 262                 i++;\r
 263         }\r
 264         if(i!=m_requesting.end())\r
 265         {\r
 266                 m_requesting.erase(i);\r
 267         }\r
 268 }\r
 269 \r
 270 void IdentityRequester::RegisterWithThread(FreenetMasterThread *thread)\r
 271 {\r
 272         thread->RegisterFCPConnected(this);\r
 273         thread->RegisterFCPMessageHandler(this);\r
 274         thread->RegisterPeriodicProcessor(this);\r
 275 }\r
 276 \r
 277 void IdentityRequester::StartRequest(const long identityid)\r
 278 {\r
 279         DateTime now;\r
 280         FCPMessage message;\r
 281         std::string publickey;\r
 282         int index;\r
 283         std::string indexstr;\r
 284         std::string identityidstr;\r
 285 \r
 286         SQLite3DB::Statement st=m_db->Prepare("SELECT PublicKey FROM tblIdentity WHERE IdentityID=?;");\r
 287         st.Bind(0,identityid);\r
 288         st.Step();\r
 289 \r
 290         if(st.RowReturned())\r
 291         {\r
 292                 st.ResultText(0,publickey);\r
 293 \r
 294                 now.SetToGMTime();\r
 295 \r
 296                 SQLite3DB::Statement st2=m_db->Prepare("SELECT MAX(RequestIndex) FROM tblIdentityRequests WHERE Day=? AND IdentityID=?;");\r
 297                 st2.Bind(0,now.Format("%Y-%m-%d"));\r
 298                 st2.Bind(1,identityid);\r
 299                 st2.Step();\r
 300 \r
 301                 index=0;\r
 302                 if(st2.RowReturned())\r
 303                 {\r
 304                         if(st2.ResultNull(0)==false)\r
 305                         {\r
 306                                 st2.ResultInt(0,index);\r
 307                                 index++;\r
 308                         }\r
 309                 }\r
 310                 st2.Finalize();\r
 311 \r
 312                 StringFunctions::Convert(index,indexstr);\r
 313                 StringFunctions::Convert(identityid,identityidstr);\r
 314 \r
 315                 message.SetName("ClientGet");\r
 316                 message["URI"]=publickey+m_messagebase+"|"+now.Format("%Y-%m-%d")+"|Identity|"+indexstr+".xml";\r
 317                 message["Identifier"]="IdentityRequester|"+identityidstr+"|"+indexstr+"|"+message["URI"];\r
 318                 message["ReturnType"]="direct";\r
 319                 message["MaxSize"]="10000";                     // 10 KB\r
 320 \r
 321                 m_fcp->SendMessage(message);\r
 322 \r
 323                 m_requesting.push_back(identityid);\r
 324         }\r
 325         st.Finalize();\r
 326 \r
 327         m_ids[identityid]=true;\r
 328 \r
 329 }\r