diff options
Diffstat (limited to 'src/rpc/blockchain.cpp')
-rw-r--r-- | src/rpc/blockchain.cpp | 36 |
1 files changed, 25 insertions, 11 deletions
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp index e3fab44719..f140999622 100644 --- a/src/rpc/blockchain.cpp +++ b/src/rpc/blockchain.cpp @@ -93,6 +93,9 @@ static int ComputeNextBlockAndDepth(const CBlockIndex* tip, const CBlockIndex* b UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex) { + // Serialize passed information without accessing chain state of the active chain! + AssertLockNotHeld(cs_main); // For performance reasons + UniValue result(UniValue::VOBJ); result.pushKV("hash", blockindex->GetBlockHash().GetHex()); const CBlockIndex* pnext; @@ -119,6 +122,9 @@ UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIndex* blockindex, bool txDetails) { + // Serialize passed information without accessing chain state of the active chain! + AssertLockNotHeld(cs_main); // For performance reasons + UniValue result(UniValue::VOBJ); result.pushKV("hash", blockindex->GetBlockHash().GetHex()); const CBlockIndex* pnext; @@ -824,9 +830,7 @@ static CBlock GetBlockChecked(const CBlockIndex* pblockindex) static UniValue getblock(const JSONRPCRequest& request) { - if (request.fHelp || request.params.size() < 1 || request.params.size() > 2) - throw std::runtime_error( - RPCHelpMan{"getblock", + const RPCHelpMan help{"getblock", "\nIf verbosity is 0, returns a string that is serialized, hex-encoded data for block 'hash'.\n" "If verbosity is 1, returns an Object with information about block <hash>.\n" "If verbosity is 2, returns an Object with information about block <hash> and information about each transaction. \n", @@ -878,9 +882,11 @@ static UniValue getblock(const JSONRPCRequest& request) HelpExampleCli("getblock", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"") + HelpExampleRpc("getblock", "\"00000000c937983704a73af28acdec37b049d214adbda81d7e2a3dd146f6ed09\"") }, - }.ToString()); + }; - LOCK(cs_main); + if (request.fHelp || !help.IsValidNumArgs(request.params.size())) { + throw std::runtime_error(help.ToString()); + } uint256 hash(ParseHashV(request.params[0], "blockhash")); @@ -892,12 +898,20 @@ static UniValue getblock(const JSONRPCRequest& request) verbosity = request.params[1].get_bool() ? 1 : 0; } - const CBlockIndex* pblockindex = LookupBlockIndex(hash); - if (!pblockindex) { - throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found"); - } + CBlock block; + const CBlockIndex* pblockindex; + const CBlockIndex* tip; + { + LOCK(cs_main); + pblockindex = LookupBlockIndex(hash); + tip = chainActive.Tip(); + + if (!pblockindex) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found"); + } - const CBlock block = GetBlockChecked(pblockindex); + block = GetBlockChecked(pblockindex); + } if (verbosity <= 0) { @@ -907,7 +921,7 @@ static UniValue getblock(const JSONRPCRequest& request) return strHex; } - return blockToJSON(block, chainActive.Tip(), pblockindex, verbosity >= 2); + return blockToJSON(block, tip, pblockindex, verbosity >= 2); } struct CCoinsStats |