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Add testnet/regtest network detection to coinbase decoder #1578

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54 changes: 36 additions & 18 deletions components/stratum/coinbase_decoder.c
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Original file line number Diff line number Diff line change
Expand Up @@ -45,67 +45,69 @@ uint64_t coinbase_decode_varint(const uint8_t *data, int *offset) {
}
}

void coinbase_decode_address_from_scriptpubkey(const uint8_t *script, size_t script_len,
char *output, size_t output_len) {
void coinbase_decode_address_from_scriptpubkey(const uint8_t *script, size_t script_len,
char *output, size_t output_len,
const char *bech32_hrp, bool is_testnet) {
if (script_len == 0 || output_len < 65) {
snprintf(output, output_len, "unknown");
return;
}

ensure_base58_init();


uint8_t p2pkh_version = is_testnet ? 0x6F : 0x00;
uint8_t p2sh_version = is_testnet ? 0xC4 : 0x05;

// P2PKH: OP_DUP OP_HASH160 <20 bytes> OP_EQUALVERIFY OP_CHECKSIG
if (script_len == 25 && script[0] == OP_DUP && script[1] == OP_HASH160 &&
if (script_len == 25 && script[0] == OP_DUP && script[1] == OP_HASH160 &&
script[2] == OP_PUSHDATA_20 && script[23] == OP_EQUALVERIFY && script[24] == OP_CHECKSIG) {
size_t b58sz = output_len;
// 0x00 is version for Mainnet P2PKH
if (b58check_enc(output, &b58sz, 0x00, script + 3, 20)) {
if (b58check_enc(output, &b58sz, p2pkh_version, script + 3, 20)) {
return;
}
// Fallback
snprintf(output, output_len, "P2PKH:");
bin2hex(script + 3, 20, output + 6, output_len - 6);
return;
}

// P2SH: OP_HASH160 <20 bytes> OP_EQUAL
if (script_len == 23 && script[0] == OP_HASH160 && script[1] == OP_PUSHDATA_20 && script[22] == OP_EQUAL) {
size_t b58sz = output_len;
// 0x05 is version for Mainnet P2SH
if (b58check_enc(output, &b58sz, 0x05, script + 2, 20)) {
if (b58check_enc(output, &b58sz, p2sh_version, script + 2, 20)) {
return;
}
// Fallback
snprintf(output, output_len, "P2SH:");
bin2hex(script + 2, 20, output + 5, output_len - 5);
return;
}

// P2WPKH: OP_0 <20 bytes>
if (script_len == 22 && script[0] == OP_0 && script[1] == OP_PUSHDATA_20) {
if (segwit_addr_encode(output, "bc", 0, script + 2, 20)) {
if (segwit_addr_encode(output, bech32_hrp, 0, script + 2, 20)) {
return;
}
// Fallback to hex if encoding fails
snprintf(output, output_len, "P2WPKH:");
bin2hex(script + 2, 20, output + 7, output_len - 7);
return;
}

// P2WSH: OP_0 <32 bytes>
if (script_len == 34 && script[0] == OP_0 && script[1] == OP_PUSHDATA_32) {
if (segwit_addr_encode(output, "bc", 0, script + 2, 32)) {
if (segwit_addr_encode(output, bech32_hrp, 0, script + 2, 32)) {
return;
}
// Fallback to hex if encoding fails
snprintf(output, output_len, "P2WSH:");
bin2hex(script + 2, 32, output + 6, output_len - 6);
return;
}

// P2TR: OP_1 <32 bytes>
if (script_len == 34 && script[0] == OP_1 && script[1] == OP_PUSHDATA_32) {
if (segwit_addr_encode(output, "bc", 1, script + 2, 32)) {
if (segwit_addr_encode(output, bech32_hrp, 1, script + 2, 32)) {
return;
}
// Fallback to hex if encoding fails
Expand Down Expand Up @@ -153,6 +155,22 @@ esp_err_t coinbase_process_notification(const mining_notify *notification,
result->user_value_satoshis = 0;
result->decoding_enabled = decode_outputs;

// Detect network from user address prefix for correct address encoding
const char *bech32_hrp = "bc";
bool is_testnet = false;
if (user_address) {
if (strncmp(user_address, "bcrt1", 4) == 0) {
bech32_hrp = "bcrt";
is_testnet = true;
} else if (strncmp(user_address, "tb1", 3) == 0) {
bech32_hrp = "tb";
is_testnet = true;
} else if (user_address[0] == 'm' || user_address[0] == 'n' || user_address[0] == '2') {
bech32_hrp = "tb";
is_testnet = true;
}
}

// 1. Calculate difficulty
result->network_difficulty = networkDifficulty(notification->target);

Expand Down Expand Up @@ -284,7 +302,7 @@ esp_err_t coinbase_process_notification(const mining_notify *notification,
if (decode_outputs) {
if (value_satoshis > 0) {
char output_address[MAX_ADDRESS_STRING_LEN];
coinbase_decode_address_from_scriptpubkey(coinbase_2_bin + offset, script_len, output_address, MAX_ADDRESS_STRING_LEN);
coinbase_decode_address_from_scriptpubkey(coinbase_2_bin + offset, script_len, output_address, MAX_ADDRESS_STRING_LEN, bech32_hrp, is_testnet);
bool is_user_address = strncmp(user_address, output_address, strlen(output_address)) == 0;

if (is_user_address) result->user_value_satoshis += value_satoshis;
Expand All @@ -297,7 +315,7 @@ esp_err_t coinbase_process_notification(const mining_notify *notification,
}
} else {
if (i < MAX_COINBASE_TX_OUTPUTS) {
coinbase_decode_address_from_scriptpubkey(coinbase_2_bin + offset, script_len, result->outputs[i].address, MAX_ADDRESS_STRING_LEN);
coinbase_decode_address_from_scriptpubkey(coinbase_2_bin + offset, script_len, result->outputs[i].address, MAX_ADDRESS_STRING_LEN, bech32_hrp, is_testnet);
result->outputs[i].value_satoshis = 0;
result->outputs[i].is_user_output = false;
result->output_count++;
Expand Down
33 changes: 8 additions & 25 deletions components/stratum/include/coinbase_decoder.h
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Original file line number Diff line number Diff line change
Expand Up @@ -33,17 +33,20 @@ uint64_t coinbase_decode_varint(const uint8_t *data, int *offset);

/**
* @brief Decode Bitcoin address from scriptPubKey
*
*
* Supports P2PKH, P2SH, P2WPKH, P2WSH, and P2TR address types.
* Output format: "<TYPE>:<HEX_HASH>"
*
* Detects network from user_address prefix (bc1/tb1/bcrt1/1/3/m/n/2).
*
* @param script ScriptPubKey binary data
* @param script_len Length of scriptPubKey
* @param output Output buffer for address string
* @param output_len Size of output buffer (should be at least MAX_ADDRESS_STRING_LEN)
* @param bech32_hrp Bech32 human-readable part ("bc" for mainnet, "tb" for testnet, "bcrt" for regtest)
* @param is_testnet true for testnet/regtest (affects base58 version bytes)
*/
void coinbase_decode_address_from_scriptpubkey(const uint8_t *script, size_t script_len,
char *output, size_t output_len);
void coinbase_decode_address_from_scriptpubkey(const uint8_t *script, size_t script_len,
char *output, size_t output_len,
const char *bech32_hrp, bool is_testnet);

/**
* @brief Structure representing a decoded coinbase transaction output
Expand All @@ -54,26 +57,6 @@ typedef struct {
bool is_user_output;
} coinbase_output_t;

/**
* @brief Decode a variable-length integer from binary data
*
* @param data Binary data containing the varint
* @param offset Pointer to current offset (will be updated)
* @return Decoded integer value
*/
uint64_t coinbase_decode_varint(const uint8_t *data, int *offset);

/**
* @brief Decode a Bitcoin address from a scriptPubKey
*
* @param script Binary scriptPubKey data
* @param script_len Length of scriptPubKey
* @param output Buffer to store the decoded address string
* @param output_len Size of output buffer
*/
void coinbase_decode_address_from_scriptpubkey(const uint8_t *script, size_t script_len,
char *output, size_t output_len);

/**
* @brief Result structure for full mining notification processing
*/
Expand Down
97 changes: 92 additions & 5 deletions components/stratum/test/test_coinbase_decoder.c
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Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,7 @@ TEST_CASE("Decode P2PKH address", "[coinbase_decoder]")
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output));
coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "bc", false);

TEST_ASSERT_EQUAL_STRING("1DYwPTnC4NgEmoqbLbcRqoSzVeH3ehmGbV", output);
}
Expand All @@ -66,7 +66,7 @@ TEST_CASE("Decode P2SH address", "[coinbase_decoder]")
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output));
coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "bc", false);

TEST_ASSERT_EQUAL_STRING("33MGnVL6rnKqt6Jjt3HbRqWJrhwy65dMhS", output);
}
Expand All @@ -81,7 +81,7 @@ TEST_CASE("Decode P2WPKH address", "[coinbase_decoder]")
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output));
coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "bc", false);

TEST_ASSERT_EQUAL_STRING("bc1q42aueh0wluqpzg3ng32kvaugnx4thnxa7y625x", output);
}
Expand All @@ -98,7 +98,7 @@ TEST_CASE("Decode P2WSH address", "[coinbase_decoder]")
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output));
coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "bc", false);

TEST_ASSERT_EQUAL_STRING("bc1qqypqxpq9qcrsszg2pvxq6rs0zqg3yyc5z5tpwxqergd3c8g7rusqyp0mu0", output);
}
Expand All @@ -115,7 +115,94 @@ TEST_CASE("Decode P2TR address", "[coinbase_decoder]")
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output));
coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "bc", false);

TEST_ASSERT_EQUAL_STRING("bc1pllhdmn9m42vcsamx24zrxgs3qrl7ahwvhw4fnzrhve25gvezzyqqc0cgpt", output);
}

// Testnet address tests

TEST_CASE("Decode testnet P2PKH address", "[coinbase_decoder]")
{
// Same hash as mainnet P2PKH test, but with testnet version byte (0x6F)
uint8_t script[] = {
0x76, 0xa9, 0x14,
0x89, 0xab, 0xcd, 0xef, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab,
0xcd, 0xef, 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef,
0x88, 0xac
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "tb", true);

// Testnet P2PKH addresses start with 'm' or 'n'
TEST_ASSERT_TRUE(output[0] == 'm' || output[0] == 'n');
}

TEST_CASE("Decode testnet P2SH address", "[coinbase_decoder]")
{
// Same hash as mainnet P2SH test, but with testnet version byte (0xC4)
uint8_t script[] = {
0xa9, 0x14,
0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0, 0x12, 0x34,
0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0, 0x12, 0x34, 0x56, 0x78,
0x87
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "tb", true);

// Testnet P2SH addresses start with '2'
TEST_ASSERT_EQUAL_CHAR('2', output[0]);
}

TEST_CASE("Decode testnet P2WPKH address", "[coinbase_decoder]")
{
// Same hash as mainnet P2WPKH test, but with "tb" HRP
uint8_t script[] = {
0x00, 0x14,
0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x00, 0x11, 0x22, 0x33,
0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "tb", true);

TEST_ASSERT_TRUE(strncmp(output, "tb1q", 4) == 0);
}

TEST_CASE("Decode testnet P2TR address", "[coinbase_decoder]")
{
// Same hash as mainnet P2TR test, but with "tb" HRP
uint8_t script[] = {
0x51, 0x20,
0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88,
0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00,
0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99, 0x88,
0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11, 0x00
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "tb", true);

TEST_ASSERT_TRUE(strncmp(output, "tb1p", 4) == 0);
}

TEST_CASE("Decode regtest P2WPKH address", "[coinbase_decoder]")
{
// Same hash as mainnet P2WPKH test, but with "bcrt" HRP
uint8_t script[] = {
0x00, 0x14,
0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x00, 0x11, 0x22, 0x33,
0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd
};
char output[MAX_ADDRESS_STRING_LEN];

coinbase_decode_address_from_scriptpubkey(script, sizeof(script), output, sizeof(output), "bcrt", true);

TEST_ASSERT_TRUE(strncmp(output, "bcrt1q", 6) == 0);
}

// Network auto-detection tests via coinbase_process_notification are
// integration-level — the detection logic is tested implicitly through
// the address prefix matching in the full processing pipeline.