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295 lines
8.5 KiB
295 lines
8.5 KiB
#include <stdint.h> |
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#include <math.h> |
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#include <set> |
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#include <map> |
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#include <vector> |
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#include <deque> |
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#include "netbase.h" |
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#include "protocol.h" |
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#include "util.h" |
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#define MIN_RETRY 1000 |
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std::string static inline ToString(const CIPPort &ip) { |
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std::string str = ip.ToString(); |
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while (str.size() < 22) str += ' '; |
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return str; |
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} |
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class CAddrStat { |
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private: |
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float weight; |
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float count; |
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float reliability; |
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public: |
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CAddrStat() : weight(0), count(0), reliability(0) {} |
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void Update(bool good, int64 age, double tau) { |
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double f = exp(-age/tau); |
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reliability = reliability * f + (good ? (1.0-f) : 0); |
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count = count * f + 1; |
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weight = weight * f + (1.0-f); |
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} |
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IMPLEMENT_SERIALIZE ( |
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READWRITE(weight); |
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READWRITE(count); |
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READWRITE(reliability); |
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) |
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friend class CAddrInfo; |
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}; |
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class CAddrReport { |
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public: |
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CIPPort ip; |
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int clientVersion; |
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double uptime[5]; |
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std::string clientSubVersion; |
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}; |
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class CAddrInfo { |
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private: |
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CIPPort ip; |
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uint64_t services; |
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int64 lastTry; |
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int64 ourLastTry; |
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int64 ignoreTill; |
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CAddrStat stat2H; |
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CAddrStat stat8H; |
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CAddrStat stat1D; |
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CAddrStat stat1W; |
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CAddrStat stat1M; |
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int clientVersion; |
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int total; |
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int success; |
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std::string clientSubVersion; |
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public: |
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CAddrInfo() : services(0), lastTry(0), ourLastTry(0), ignoreTill(0), clientVersion(0), total(0), success(0) {} |
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CAddrReport GetReport() const { |
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CAddrReport ret; |
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ret.ip = ip; |
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ret.clientVersion = clientVersion; |
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ret.clientSubVersion = clientSubVersion; |
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ret.uptime[0] = stat2H.reliability; |
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ret.uptime[1] = stat8H.reliability; |
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ret.uptime[2] = stat1D.reliability; |
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ret.uptime[3] = stat1W.reliability; |
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ret.uptime[4] = stat1M.reliability; |
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return ret; |
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} |
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bool IsGood() const { |
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if (ip.GetPort() != 8333) return false; |
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if (!(services & NODE_NETWORK)) return false; |
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if (!ip.IsRoutable()) return false; |
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if (!ip.IsIPv4()) return false; |
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if (clientVersion && clientVersion < 32400) return false; |
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if (total <= 3 && success * 2 >= total) return true; |
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if (stat2H.reliability > 0.7 && stat2H.count > 1) return true; |
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if (stat8H.reliability > 0.6 && stat8H.count > 2) return true; |
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if (stat1D.reliability > 0.5 && stat1D.count > 4) return true; |
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if (stat1W.reliability > 0.4 && stat1W.count > 8) return true; |
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return false; |
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} |
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int GetBanTime() const { |
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if (IsGood()) return 0; |
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if (clientVersion && clientVersion < 31900) { return 1000000; } |
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if (stat1D.reliability < 0.01 && stat1D.count > 5) { return 500000; } |
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if (stat1W.reliability - stat1W.weight + 1.0 < 0.10 && stat1W.count > 4) { return 240*3600; } |
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return 0; |
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} |
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int GetIgnoreTime() const { |
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if (IsGood()) return 0; |
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if (stat2H.reliability - stat2H.weight + 1.0 < 0.2 && stat2H.count > 3) { return 3*3600; } |
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if (stat8H.reliability - stat8H.weight + 1.0 < 0.2 && stat8H.count > 6) { return 12*3600; } |
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if (stat1D.reliability - stat1D.weight + 1.0 < 0.2 && stat1D.count > 9) { return 36*3600; } |
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return 0; |
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} |
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void Update(bool good); |
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friend class CAddrDb; |
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IMPLEMENT_SERIALIZE ( |
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unsigned char version = 2; |
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READWRITE(version); |
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READWRITE(ip); |
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READWRITE(services); |
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READWRITE(lastTry); |
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unsigned char tried = ourLastTry != 0; |
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READWRITE(tried); |
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if (tried) { |
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READWRITE(ourLastTry); |
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READWRITE(ignoreTill); |
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READWRITE(stat2H); |
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READWRITE(stat8H); |
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READWRITE(stat1D); |
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READWRITE(stat1W); |
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if (version >= 1) |
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READWRITE(stat1M); |
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else |
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if (!fWrite) |
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*((CAddrStat*)(&stat1M)) = stat1W; |
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READWRITE(total); |
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READWRITE(success); |
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READWRITE(clientVersion); |
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if (version >= 2) |
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READWRITE(clientSubVersion); |
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} |
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) |
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}; |
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class CAddrDbStats { |
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public: |
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int nBanned; |
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int nAvail; |
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int nTracked; |
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int nNew; |
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int nGood; |
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int nAge; |
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}; |
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// seen nodes |
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// / \ |
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// (a) banned nodes available nodes-------------- |
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// / | \ |
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// tracked nodes (b) unknown nodes (e) active nodes |
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// / \ |
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// (d) good nodes (c) non-good nodes |
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class CAddrDb { |
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private: |
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mutable CCriticalSection cs; |
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int nId; // number of address id's |
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std::map<int, CAddrInfo> idToInfo; // map address id to address info (b,c,d,e) |
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std::map<CIPPort, int> ipToId; // map ip to id (b,c,d,e) |
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std::deque<int> ourId; // sequence of tried nodes, in order we have tried connecting to them (c,d) |
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std::set<int> unkId; // set of nodes not yet tried (b) |
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std::set<int> goodId; // set of good nodes (d, good e) |
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int nDirty; |
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protected: |
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// internal routines that assume proper locks are acquired |
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void Add_(const CAddress &addr, bool force); // add an address |
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bool Get_(CIPPort &ip, int& wait); // get an IP to test (must call Good_, Bad_, or Skipped_ on result afterwards) |
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void Good_(const CIPPort &ip, int clientV, std::string clientSV); // mark an IP as good (must have been returned by Get_) |
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void Bad_(const CIPPort &ip, int ban); // mark an IP as bad (and optionally ban it) (must have been returned by Get_) |
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void Skipped_(const CIPPort &ip); // mark an IP as skipped (must have been returned by Get_) |
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int Lookup_(const CIPPort &ip); // look up id of an IP |
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void GetIPs_(std::set<CIP>& ips, int max, bool fOnlyIPv4); // get a random set of IPs (shared lock only) |
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public: |
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std::map<CIPPort, time_t> banned; // nodes that are banned, with their unban time (a) |
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void GetStats(CAddrDbStats &stats) { |
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SHARED_CRITICAL_BLOCK(cs) { |
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stats.nBanned = banned.size(); |
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stats.nAvail = idToInfo.size(); |
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stats.nTracked = ourId.size(); |
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stats.nGood = goodId.size(); |
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stats.nNew = unkId.size(); |
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stats.nAge = time(NULL) - idToInfo[ourId[0]].ourLastTry; |
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} |
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} |
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std::vector<CAddrReport> GetAll() { |
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std::vector<CAddrReport> ret; |
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SHARED_CRITICAL_BLOCK(cs) { |
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for (std::deque<int>::const_iterator it = ourId.begin(); it != ourId.end(); it++) { |
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const CAddrInfo &info = idToInfo[*it]; |
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if (info.success > 0) { |
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ret.push_back(info.GetReport()); |
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} |
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} |
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} |
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return ret; |
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} |
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// serialization code |
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// format: |
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// nVersion (0 for now) |
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// n (number of ips in (b,c,d)) |
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// CAddrInfo[n] |
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// banned |
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// acquires a shared lock (this does not suffice for read mode, but we assume that only happens at startup, single-threaded) |
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// this way, dumping does not interfere with GetIPs_, which is called from the DNS thread |
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IMPLEMENT_SERIALIZE (({ |
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int nVersion = 0; |
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READWRITE(nVersion); |
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SHARED_CRITICAL_BLOCK(cs) { |
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if (fWrite) { |
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CAddrDb *db = const_cast<CAddrDb*>(this); |
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int n = ourId.size() + unkId.size(); |
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READWRITE(n); |
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for (std::deque<int>::const_iterator it = ourId.begin(); it != ourId.end(); it++) { |
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std::map<int, CAddrInfo>::iterator ci = db->idToInfo.find(*it); |
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READWRITE((*ci).second); |
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} |
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for (std::set<int>::const_iterator it = unkId.begin(); it != unkId.end(); it++) { |
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std::map<int, CAddrInfo>::iterator ci = db->idToInfo.find(*it); |
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READWRITE((*ci).second); |
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} |
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} else { |
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CAddrDb *db = const_cast<CAddrDb*>(this); |
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db->nId = 0; |
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int n; |
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READWRITE(n); |
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for (int i=0; i<n; i++) { |
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CAddrInfo info; |
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READWRITE(info); |
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if (!info.GetBanTime()) { |
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int id = db->nId++; |
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db->idToInfo[id] = info; |
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db->ipToId[info.ip] = id; |
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if (info.ourLastTry) { |
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db->ourId.push_back(id); |
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if (info.IsGood()) db->goodId.insert(id); |
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} else { |
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db->unkId.insert(id); |
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} |
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} |
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} |
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db->nDirty++; |
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} |
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READWRITE(banned); |
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} |
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});) |
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void Add(const CAddress &addr, bool fForce = false) { |
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CRITICAL_BLOCK(cs) |
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Add_(addr, fForce); |
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} |
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void Add(const std::vector<CAddress> &vAddr, bool fForce = false) { |
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CRITICAL_BLOCK(cs) |
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for (int i=0; i<vAddr.size(); i++) |
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Add_(vAddr[i], fForce); |
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} |
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void Good(const CIPPort &addr, int clientVersion, std::string clientSubVersion) { |
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CRITICAL_BLOCK(cs) |
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Good_(addr, clientVersion, clientSubVersion); |
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} |
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void Skipped(const CIPPort &addr) { |
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CRITICAL_BLOCK(cs) |
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Skipped_(addr); |
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} |
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void Bad(const CIPPort &addr, int ban = 0) { |
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CRITICAL_BLOCK(cs) |
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Bad_(addr, ban); |
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} |
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bool Get(CIPPort &ip, int& wait) { |
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CRITICAL_BLOCK(cs) |
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return Get_(ip, wait); |
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} |
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void GetIPs(std::set<CIP>& ips, int max, bool fOnlyIPv4 = true) { |
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SHARED_CRITICAL_BLOCK(cs) |
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GetIPs_(ips, max, fOnlyIPv4); |
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} |
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};
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