backport: merge bitcoin#20018, #22141, #22221, #22653, #23054, #23398, #23175, #22362, #23769, #23936, #24238, #24331 (auxiliary backports: part 15)

configure.ac

@@ -1171,13 +1171,6 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
  [ AC_MSG_RESULT(no)]
 )
 
-AC_MSG_CHECKING(for getentropy)
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]],
- [[ getentropy(nullptr, 32) ]])],
- [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_GETENTROPY, 1,[Define this symbol if the BSD getentropy system call is available]) ],
- [ AC_MSG_RESULT(no)]
-)
-
 AC_MSG_CHECKING(for getentropy via random.h)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
  #include <sys/random.h>]],

src/Makefile.test.include

@@ -77,6 +77,7 @@ BITCOIN_TESTS =\
   test/addrman_tests.cpp \
   test/amount_tests.cpp \
   test/allocator_tests.cpp \
+  test/banman_tests.cpp \
   test/base32_tests.cpp \
   test/base58_tests.cpp \
   test/base64_tests.cpp \

src/bitcoin-cli.cpp

@@ -52,6 +52,7 @@ static constexpr int DEFAULT_WAIT_CLIENT_TIMEOUT = 0;
 static const bool DEFAULT_NAMED=false;
 static const int CONTINUE_EXECUTION=-1;
 static constexpr int8_t UNKNOWN_NETWORK{-1};
+static constexpr std::array NETWORKS{"ipv4", "ipv6", "onion", "i2p", "cjdns"};
 
 /** Default number of blocks to generate for RPC generatetoaddress. */
 static const std::string DEFAULT_NBLOCKS = "1";
@@ -259,11 +260,10 @@ class BaseRequestHandler
 class AddrinfoRequestHandler : public BaseRequestHandler
 {
 private:
-    static constexpr std::array m_networks{"ipv4", "ipv6", "onion", "i2p"};
     int8_t NetworkStringToId(const std::string& str) const
     {
-        for (size_t i = 0; i < m_networks.size(); ++i) {
-            if (str == m_networks.at(i)) return i;
+        for (size_t i = 0; i < NETWORKS.size(); ++i) {
+            if (str == NETWORKS[i]) return i;
         }
         return UNKNOWN_NETWORK;
     }
@@ -286,7 +286,7 @@ class AddrinfoRequestHandler : public BaseRequestHandler
             throw std::runtime_error("-addrinfo requires dashd server to be running v21.0 and up");
         }
         // Count the number of peers known to our node, by network.
-        std::array<uint64_t, m_networks.size()> counts{{}};
+        std::array<uint64_t, NETWORKS.size()> counts{{}};
         for (const UniValue& node : nodes) {
             std::string network_name{node["network"].get_str()};
             const int8_t network_id{NetworkStringToId(network_name)};
@@ -296,8 +296,8 @@ class AddrinfoRequestHandler : public BaseRequestHandler
         // Prepare result to return to user.
         UniValue result{UniValue::VOBJ}, addresses{UniValue::VOBJ};
         uint64_t total{0}; // Total address count
-        for (size_t i = 0; i < m_networks.size(); ++i) {
-            addresses.pushKV(m_networks.at(i), counts.at(i));
+        for (size_t i = 0; i < NETWORKS.size(); ++i) {
+            addresses.pushKV(NETWORKS[i], counts.at(i));
             total += counts.at(i);
         }
         addresses.pushKV("total", total);
@@ -384,14 +384,13 @@ class NetinfoRequestHandler : public BaseRequestHandler
 {
 private:
     static constexpr uint8_t MAX_DETAIL_LEVEL{4};
-    static constexpr std::array m_networks{"ipv4", "ipv6", "onion", "i2p"};
-    std::array<std::array<uint16_t, m_networks.size() + 1>, 3> m_counts{{{}}}; //!< Peer counts by (in/out/total, networks/total)
+    std::array<std::array<uint16_t, NETWORKS.size() + 1>, 3> m_counts{{{}}}; //!< Peer counts by (in/out/total, networks/total)
     uint8_t m_block_relay_peers_count{0};
     uint8_t m_manual_peers_count{0};
     int8_t NetworkStringToId(const std::string& str) const
     {
-        for (size_t i = 0; i < m_networks.size(); ++i) {
-            if (str == m_networks.at(i)) return i;
+        for (size_t i = 0; i < NETWORKS.size(); ++i) {
+            if (str == NETWORKS[i]) return i;
         }
         return UNKNOWN_NETWORK;
     }
@@ -493,9 +492,9 @@ class NetinfoRequestHandler : public BaseRequestHandler
             const bool is_block_relay{peer["relaytxes"].isNull() ? false : !peer["relaytxes"].get_bool()};
             const std::string conn_type{peer["connection_type"].get_str()};
             ++m_counts.at(is_outbound).at(network_id);        // in/out by network
-            ++m_counts.at(is_outbound).at(m_networks.size()); // in/out overall
+            ++m_counts.at(is_outbound).at(NETWORKS.size());   // in/out overall
             ++m_counts.at(2).at(network_id);                  // total by network
-            ++m_counts.at(2).at(m_networks.size());           // total overall
+            ++m_counts.at(2).at(NETWORKS.size());             // total overall
             if (is_block_relay) ++m_block_relay_peers_count;
             if (conn_type == "manual") ++m_manual_peers_count;
             if (DetailsRequested()) {
@@ -592,7 +591,7 @@ class NetinfoRequestHandler : public BaseRequestHandler
             for (int8_t n : reachable_networks) {
                 result += strprintf("%8i", m_counts.at(i).at(n)); // network peers count
             }
-            result += strprintf("   %5i", m_counts.at(i).at(m_networks.size())); // total peers count
+            result += strprintf("   %5i", m_counts.at(i).at(NETWORKS.size())); // total peers count
             if (i == 1) { // the outbound row has two extra columns for block relay and manual peer counts
                 result += strprintf("   %5i", m_block_relay_peers_count);
                 if (m_manual_peers_count) result += strprintf("   %5i", m_manual_peers_count);

src/chain.h

@@ -59,37 +59,40 @@ class CBlockFileInfo
         READWRITE(VARINT(obj.nTimeLast));
     }
 
-     void SetNull() {
-         nBlocks = 0;
-         nSize = 0;
-         nUndoSize = 0;
-         nHeightFirst = 0;
-         nHeightLast = 0;
-         nTimeFirst = 0;
-         nTimeLast = 0;
-     }
-
-     CBlockFileInfo() {
-         SetNull();
-     }
-
-     std::string ToString() const;
-
-     /** update statistics (does not update nSize) */
-     void AddBlock(unsigned int nHeightIn, uint64_t nTimeIn) {
-         if (nBlocks==0 || nHeightFirst > nHeightIn)
-             nHeightFirst = nHeightIn;
-         if (nBlocks==0 || nTimeFirst > nTimeIn)
-             nTimeFirst = nTimeIn;
-         nBlocks++;
-         if (nHeightIn > nHeightLast)
-             nHeightLast = nHeightIn;
-         if (nTimeIn > nTimeLast)
-             nTimeLast = nTimeIn;
-     }
+    void SetNull()
+    {
+        nBlocks = 0;
+        nSize = 0;
+        nUndoSize = 0;
+        nHeightFirst = 0;
+        nHeightLast = 0;
+        nTimeFirst = 0;
+        nTimeLast = 0;
+    }
+
+    CBlockFileInfo()
+    {
+        SetNull();
+    }
+
+    std::string ToString() const;
+
+    /** update statistics (does not update nSize) */
+    void AddBlock(unsigned int nHeightIn, uint64_t nTimeIn)
+    {
+        if (nBlocks == 0 || nHeightFirst > nHeightIn)
+            nHeightFirst = nHeightIn;
+        if (nBlocks == 0 || nTimeFirst > nTimeIn)
+            nTimeFirst = nTimeIn;
+        nBlocks++;
+        if (nHeightIn > nHeightLast)
+            nHeightLast = nHeightIn;
+        if (nTimeIn > nTimeLast)
+            nTimeLast = nTimeIn;
+    }
 };
 
-enum BlockStatus: uint32_t {
+enum BlockStatus : uint32_t {
     //! Unused.
     BLOCK_VALID_UNKNOWN      =    0,
 
@@ -226,7 +229,7 @@ class CBlockIndex
         FlatFilePos ret;
         if (nStatus & BLOCK_HAVE_DATA) {
             ret.nFile = nFile;
-            ret.nPos  = nDataPos;
+            ret.nPos = nDataPos;
         }
         return ret;
     }
@@ -237,21 +240,21 @@ class CBlockIndex
         FlatFilePos ret;
         if (nStatus & BLOCK_HAVE_UNDO) {
             ret.nFile = nFile;
-            ret.nPos  = nUndoPos;
+            ret.nPos = nUndoPos;
         }
         return ret;
     }
 
     CBlockHeader GetBlockHeader() const
     {
         CBlockHeader block;
-        block.nVersion       = nVersion;
+        block.nVersion = nVersion;
         if (pprev)
             block.hashPrevBlock = pprev->GetBlockHash();
         block.hashMerkleRoot = hashMerkleRoot;
-        block.nTime          = nTime;
-        block.nBits          = nBits;
-        block.nNonce         = nNonce;
+        block.nTime = nTime;
+        block.nBits = nBits;
+        block.nNonce = nNonce;
         return block;
     }
 
@@ -293,7 +296,7 @@ class CBlockIndex
             *(--pbegin) = pindex->GetBlockTime();
 
         std::sort(pbegin, pend);
-        return pbegin[(pend - pbegin)/2];
+        return pbegin[(pend - pbegin) / 2];
     }
 
     std::string ToString() const;
@@ -360,12 +363,14 @@ class CDiskBlockIndex : public CBlockIndex
     uint256 hash;
     uint256 hashPrev;
 
-    CDiskBlockIndex() {
+    CDiskBlockIndex()
+    {
         hash = uint256();
         hashPrev = uint256();
     }
 
-    explicit CDiskBlockIndex(const CBlockIndex* pindex) : CBlockIndex(*pindex) {
+    explicit CDiskBlockIndex(const CBlockIndex* pindex) : CBlockIndex(*pindex)
+    {
         hash = (hash == uint256() ? pindex->GetBlockHash() : hash);
         hashPrev = (pprev ? pprev->GetBlockHash() : uint256());
     }
@@ -399,12 +404,12 @@ class CDiskBlockIndex : public CBlockIndex
         if(hash != uint256()) return hash;
         // should never really get here, keeping this as a fallback
         CBlockHeader block;
-        block.nVersion        = nVersion;
-        block.hashPrevBlock   = hashPrev;
-        block.hashMerkleRoot  = hashMerkleRoot;
-        block.nTime           = nTime;
-        block.nBits           = nBits;
-        block.nNonce          = nNonce;
+        block.nVersion = nVersion;
+        block.hashPrevBlock = hashPrev;
+        block.hashMerkleRoot = hashMerkleRoot;
+        block.nTime = nTime;
+        block.nBits = nBits;
+        block.nNonce = nNonce;
         return block.GetHash();
     }
 
@@ -413,54 +418,65 @@ class CDiskBlockIndex : public CBlockIndex
 };
 
 /** An in-memory indexed chain of blocks. */
-class CChain {
+class CChain
+{
 private:
     std::vector<CBlockIndex*> vChain;
 
 public:
+    CChain() = default;
+    CChain(const CChain&) = delete;
+    CChain& operator=(const CChain&) = delete;
+
     /** Returns the index entry for the genesis block of this chain, or nullptr if none. */
-    CBlockIndex *Genesis() const {
+    CBlockIndex* Genesis() const
+    {
         return vChain.size() > 0 ? vChain[0] : nullptr;
     }
 
     /** Returns the index entry for the tip of this chain, or nullptr if none. */
-    CBlockIndex *Tip() const {
+    CBlockIndex* Tip() const
+    {
         return vChain.size() > 0 ? vChain[vChain.size() - 1] : nullptr;
     }
 
     /** Returns the index entry at a particular height in this chain, or nullptr if no such height exists. */
-    CBlockIndex *operator[](int nHeight) const {
+    CBlockIndex* operator[](int nHeight) const
+    {
         if (nHeight < 0 || nHeight >= (int)vChain.size())
             return nullptr;
         return vChain[nHeight];
     }
 
     /** Efficiently check whether a block is present in this chain. */
-    bool Contains(const CBlockIndex *pindex) const {
+    bool Contains(const CBlockIndex* pindex) const
+    {
         return (*this)[pindex->nHeight] == pindex;
     }
 
     /** Find the successor of a block in this chain, or nullptr if the given index is not found or is the tip. */
-    CBlockIndex *Next(const CBlockIndex *pindex) const {
+    CBlockIndex* Next(const CBlockIndex* pindex) const
+    {
         if (Contains(pindex))
             return (*this)[pindex->nHeight + 1];
         else
             return nullptr;
     }
 
     /** Return the maximal height in the chain. Is equal to chain.Tip() ? chain.Tip()->nHeight : -1. */
-    int Height() const {
+    int Height() const
+    {
         return vChain.size() - 1;
     }
 
     /** Set/initialize a chain with a given tip. */
-    void SetTip(CBlockIndex *pindex);
+    void SetTip(CBlockIndex* pindex);
 
     /** Return a CBlockLocator that refers to a block in this chain (by default the tip). */
-    CBlockLocator GetLocator(const CBlockIndex *pindex = nullptr) const;
+    CBlockLocator GetLocator(const CBlockIndex* pindex = nullptr) const;
 
     /** Find the last common block between this chain and a block index entry. */
-    const CBlockIndex *FindFork(const CBlockIndex *pindex) const;
+    const CBlockIndex* FindFork(const CBlockIndex* pindex) const;
 
     /** Find the earliest block with timestamp equal or greater than the given time and height equal or greater than the given height. */
     CBlockIndex* FindEarliestAtLeast(int64_t nTime, int height) const;

src/context.h

@@ -8,6 +8,7 @@
 #include <functional>
 #include <variant>
 
+class ArgsManager;
 class ChainstateManager;
 class CTxMemPool;
 class CBlockPolicyEstimator;
@@ -16,6 +17,7 @@ struct NodeContext;
 struct WalletContext;
 
 using CoreContext = std::variant<std::monostate,
+                                 std::reference_wrapper<ArgsManager>,
                                  std::reference_wrapper<NodeContext>,
                                  std::reference_wrapper<WalletContext>,
                                  std::reference_wrapper<CTxMemPool>,

src/init.cpp

@@ -2439,6 +2439,13 @@ bool AppInitMain(NodeContext& node, interfaces::BlockAndHeaderTipInfo* tip_info)
         if (connect.size() != 1 || connect[0] != "0") {
             connOptions.m_specified_outgoing = connect;
         }
+        if (!connOptions.m_specified_outgoing.empty() && !connOptions.vSeedNodes.empty()) {
+            LogPrintf("-seednode is ignored when -connect is used\n");
+        }
+
+        if (args.IsArgSet("-dnsseed") && args.GetBoolArg("-dnsseed", DEFAULT_DNSSEED) && args.IsArgSet("-proxy")) {
+            LogPrintf("-dnsseed is ignored when -connect is used and -proxy is specified\n");
+        }
     }
 
     std::string sem_str = args.GetArg("-socketevents", DEFAULT_SOCKETEVENTS);

src/net.cpp

@@ -2471,6 +2471,8 @@ void CConnman::ThreadDNSAddressSeed()
         }
 
         LogPrintf("Loading addresses from DNS seed %s\n", seed);
+        // If -proxy is in use, we make an ADDR_FETCH connection to the DNS resolved peer address
+        // for the base dns seed domain in chainparams
         if (HaveNameProxy()) {
             AddAddrFetch(seed);
         } else {
@@ -2493,8 +2495,9 @@ void CConnman::ThreadDNSAddressSeed()
                 }
                 addrman.Add(vAdd, resolveSource);
             } else {
-                // We now avoid directly using results from DNS Seeds which do not support service bit filtering,
-                // instead using them as a addrfetch to get nodes with our desired service bits.
+                // If the seed does not support a subdomain with our desired service bits,
+                // we make an ADDR_FETCH connection to the DNS resolved peer address for the
+                // base dns seed domain in chainparams
                 AddAddrFetch(seed);
             }
         }
@@ -2589,7 +2592,6 @@ void CConnman::ThreadOpenConnections(const std::vector<std::string> connect, CDe
     {
         for (int64_t nLoop = 0;; nLoop++)
         {
-            ProcessAddrFetch();
             for (const std::string& strAddr : connect)
             {
                 CAddress addr(CService(), NODE_NONE);