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-rw-r--r--src/core_io.h2
-rw-r--r--src/core_read.cpp14
-rw-r--r--src/rpc/mining.cpp39
3 files changed, 54 insertions, 1 deletions
diff --git a/src/core_io.h b/src/core_io.h
index ee323a22ee..d53a45c0cb 100644
--- a/src/core_io.h
+++ b/src/core_io.h
@@ -11,6 +11,7 @@
#include <vector>
class CBlock;
+class CBlockHeader;
class CScript;
class CTransaction;
struct CMutableTransaction;
@@ -23,6 +24,7 @@ CScript ParseScript(const std::string& s);
std::string ScriptToAsmStr(const CScript& script, const bool fAttemptSighashDecode = false);
bool DecodeHexTx(CMutableTransaction& tx, const std::string& hex_tx, bool try_no_witness = false, bool try_witness = true);
bool DecodeHexBlk(CBlock&, const std::string& strHexBlk);
+bool DecodeHexBlockHeader(CBlockHeader&, const std::string& hex_header);
uint256 ParseHashStr(const std::string&, const std::string& strName);
std::vector<unsigned char> ParseHexUV(const UniValue& v, const std::string& strName);
bool DecodePSBT(PartiallySignedTransaction& psbt, const std::string& base64_tx, std::string& error);
diff --git a/src/core_read.cpp b/src/core_read.cpp
index a5df45aba1..b02016c014 100644
--- a/src/core_read.cpp
+++ b/src/core_read.cpp
@@ -145,6 +145,20 @@ bool DecodeHexTx(CMutableTransaction& tx, const std::string& hex_tx, bool try_no
return false;
}
+bool DecodeHexBlockHeader(CBlockHeader& header, const std::string& hex_header)
+{
+ if (!IsHex(hex_header)) return false;
+
+ const std::vector<unsigned char> header_data{ParseHex(hex_header)};
+ CDataStream ser_header(header_data, SER_NETWORK, PROTOCOL_VERSION);
+ try {
+ ser_header >> header;
+ } catch (const std::exception&) {
+ return false;
+ }
+ return true;
+}
+
bool DecodeHexBlk(CBlock& block, const std::string& strHexBlk)
{
if (!IsHex(strHexBlk))
diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index e751587dc7..623b0bd86a 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -10,7 +10,6 @@
#include <consensus/params.h>
#include <consensus/validation.h>
#include <core_io.h>
-#include <validation.h>
#include <key_io.h>
#include <miner.h>
#include <net.h>
@@ -23,6 +22,7 @@
#include <txmempool.h>
#include <util.h>
#include <utilstrencodings.h>
+#include <validation.h>
#include <validationinterface.h>
#include <warnings.h>
@@ -763,6 +763,42 @@ static UniValue submitblock(const JSONRPCRequest& request)
return BIP22ValidationResult(sc.state);
}
+static UniValue submitheader(const JSONRPCRequest& request)
+{
+ if (request.fHelp || request.params.size() != 1) {
+ throw std::runtime_error(
+ "submitheader \"hexdata\"\n"
+ "\nDecode the given hexdata as a header and submit it as a candidate chain tip if valid."
+ "\nThrows when the header is invalid.\n"
+ "\nArguments\n"
+ "1. \"hexdata\" (string, required) the hex-encoded block header data\n"
+ "\nResult:\n"
+ "None"
+ "\nExamples:\n" +
+ HelpExampleCli("submitheader", "\"aabbcc\"") +
+ HelpExampleRpc("submitheader", "\"aabbcc\""));
+ }
+
+ CBlockHeader h;
+ if (!DecodeHexBlockHeader(h, request.params[0].get_str())) {
+ throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Block header decode failed");
+ }
+ {
+ LOCK(cs_main);
+ if (!LookupBlockIndex(h.hashPrevBlock)) {
+ throw JSONRPCError(RPC_VERIFY_ERROR, "Must submit previous header (" + h.hashPrevBlock.GetHex() + ") first");
+ }
+ }
+
+ CValidationState state;
+ ProcessNewBlockHeaders({h}, state, Params(), /* ppindex */ nullptr, /* first_invalid */ nullptr);
+ if (state.IsValid()) return NullUniValue;
+ if (state.IsError()) {
+ throw JSONRPCError(RPC_VERIFY_ERROR, FormatStateMessage(state));
+ }
+ throw JSONRPCError(RPC_VERIFY_ERROR, state.GetRejectReason());
+}
+
static UniValue estimatefee(const JSONRPCRequest& request)
{
throw JSONRPCError(RPC_METHOD_DEPRECATED, "estimatefee was removed in v0.17.\n"
@@ -940,6 +976,7 @@ static const CRPCCommand commands[] =
{ "mining", "prioritisetransaction", &prioritisetransaction, {"txid","dummy","fee_delta"} },
{ "mining", "getblocktemplate", &getblocktemplate, {"template_request"} },
{ "mining", "submitblock", &submitblock, {"hexdata","dummy"} },
+ { "mining", "submitheader", &submitheader, {"hexdata"} },
{ "generating", "generatetoaddress", &generatetoaddress, {"nblocks","address","maxtries"} },