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Merge #11618: rpc: Lock cs_main in blockToJSON/blockheaderToJSON

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a9b6ba0b7 Add missing cs_main locks when calling blockToJSON/blockheaderToJSON (practicalswift)

Pull request description:

  `blockToJSON(...)` and `blockheaderToJSON(...)` read the variable `chainActive` which requires holding the mutex `cs_main`. So does `GetDifficulty(...)`.

Tree-SHA512: bfb94f5e3238accbf6a4daddde49d53f1891c38ae9b07e25b3098c485747159258f64bb66a50e147b32beac601de89d9d04ff717b6c4f1460d329c90a53d3333
This commit is contained in:
MarcoFalke 2017-11-07 10:40:55 -05:00
commit 87d90efd69
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2 changed files with 12 additions and 3 deletions
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13
src/rest.cpp
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@ -178,8 +178,11 @@ static bool rest_headers(HTTPRequest* req,
}
case RF_JSON: {
UniValue jsonHeaders(UniValue::VARR);
for (const CBlockIndex *pindex : headers) {
jsonHeaders.push_back(blockheaderToJSON(pindex));
{
LOCK(cs_main);
for (const CBlockIndex *pindex : headers) {
jsonHeaders.push_back(blockheaderToJSON(pindex));
}
}
std::string strJSON = jsonHeaders.write() + "\n";
req->WriteHeader("Content-Type", "application/json");
@ -239,7 +242,11 @@ static bool rest_block(HTTPRequest* req,
}
case RF_JSON: {
UniValue objBlock = blockToJSON(block, pblockindex, showTxDetails);
UniValue objBlock;
{
LOCK(cs_main);
objBlock = blockToJSON(block, pblockindex, showTxDetails);
}
std::string strJSON = objBlock.write() + "\n";
req->WriteHeader("Content-Type", "application/json");
req->WriteReply(HTTP_OK, strJSON);

2
src/rpc/blockchain.cpp
View File

@ -78,6 +78,7 @@ double GetDifficulty(const CBlockIndex* blockindex)
UniValue blockheaderToJSON(const CBlockIndex* blockindex)
{
AssertLockHeld(cs_main);
UniValue result(UniValue::VOBJ);
result.push_back(Pair("hash", blockindex->GetBlockHash().GetHex()));
int confirmations = -1;
@ -106,6 +107,7 @@ UniValue blockheaderToJSON(const CBlockIndex* blockindex)
UniValue blockToJSON(const CBlock& block, const CBlockIndex* blockindex, bool txDetails)
{
AssertLockHeld(cs_main);
UniValue result(UniValue::VOBJ);
result.push_back(Pair("hash", blockindex->GetBlockHash().GetHex()));
int confirmations = -1;