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Regtest #8

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c644dab
Add regtest
lvaccaro Oct 4, 2017
4d29e46
Fix bip32 key, address, proof-of-work
lvaccaro Oct 5, 2017
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13 changes: 13 additions & 0 deletions BRAddress.c
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Original file line number Diff line number Diff line change
Expand Up @@ -247,6 +247,8 @@ size_t BRAddressFromScriptPubKey(char *addr, size_t addrLen, const uint8_t *scri
data[0] = BITCOIN_PUBKEY_ADDRESS;
#if BITCOIN_TESTNET
data[0] = BITCOIN_PUBKEY_ADDRESS_TEST;
#elif BITCOIN_REGTEST
data[0] = BITCOIN_SCRIPT_ADDRESS_REGTEST;
#endif

if (count == 5 && *elems[0] == OP_DUP && *elems[1] == OP_HASH160 && *elems[2] == 20 &&
Expand All @@ -261,6 +263,8 @@ size_t BRAddressFromScriptPubKey(char *addr, size_t addrLen, const uint8_t *scri
data[0] = BITCOIN_SCRIPT_ADDRESS;
#if BITCOIN_TESTNET
data[0] = BITCOIN_SCRIPT_ADDRESS_TEST;
#elif BITCOIN_REGTEST
data[0] = BITCOIN_SCRIPT_ADDRESS_REGTEST;
#endif
d = BRScriptData(elems[1], &l);
if (l != 20) d = NULL;
Expand Down Expand Up @@ -290,6 +294,8 @@ size_t BRAddressFromScriptSig(char *addr, size_t addrLen, const uint8_t *script,
data[0] = BITCOIN_PUBKEY_ADDRESS;
#if BITCOIN_TESTNET
data[0] = BITCOIN_PUBKEY_ADDRESS_TEST;
#elif BITCOIN_REGTEST
data[0] = BITCOIN_PUBKEY_ADDRESS_REGTEST;
#endif

if (count >= 2 && *elems[count - 2] <= OP_PUSHDATA4 &&
Expand All @@ -303,6 +309,8 @@ size_t BRAddressFromScriptSig(char *addr, size_t addrLen, const uint8_t *script,
data[0] = BITCOIN_SCRIPT_ADDRESS;
#if BITCOIN_TESTNET
data[0] = BITCOIN_SCRIPT_ADDRESS_TEST;
#elif BITCOIN_REGTEST
data[0] = BITCOIN_SCRIPT_ADDRESS_REGTEST;
#endif
d = BRScriptData(elems[count - 1], &l);
if (d) BRHash160(&data[1], d, l);
Expand All @@ -327,6 +335,9 @@ size_t BRAddressScriptPubKey(uint8_t *script, size_t scriptLen, const char *addr
#if BITCOIN_TESTNET
pubkeyAddress = BITCOIN_PUBKEY_ADDRESS_TEST;
scriptAddress = BITCOIN_SCRIPT_ADDRESS_TEST;
#elif BITCOIN_REGTEST
pubkeyAddress = BITCOIN_PUBKEY_ADDRESS_REGTEST;
scriptAddress = BITCOIN_SCRIPT_ADDRESS_REGTEST;
#endif

if (BRBase58CheckDecode(data, sizeof(data), addr) == 21) {
Expand Down Expand Up @@ -370,6 +381,8 @@ int BRAddressIsValid(const char *addr)

#if BITCOIN_TESTNET
r = (data[0] == BITCOIN_PUBKEY_ADDRESS_TEST || data[0] == BITCOIN_SCRIPT_ADDRESS_TEST);
#elif BITCOIN_REGTEST
r = (data[0] == BITCOIN_PUBKEY_ADDRESS_REGTEST || data[0] == BITCOIN_SCRIPT_ADDRESS_REGTEST);
#endif
}

Expand Down
4 changes: 4 additions & 0 deletions BRAddress.h
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Original file line number Diff line number Diff line change
Expand Up @@ -36,13 +36,17 @@ extern "C" {

#if BITCOIN_TESTNET
#pragma message "testnet build"
#elif BITCOIN_REGTEST
#pragma message "regtest build"
#endif

// bitcoin address prefixes
#define BITCOIN_PUBKEY_ADDRESS 0
#define BITCOIN_SCRIPT_ADDRESS 5
#define BITCOIN_PUBKEY_ADDRESS_TEST 111
#define BITCOIN_SCRIPT_ADDRESS_TEST 196
#define BITCOIN_PUBKEY_ADDRESS_REGTEST 111
#define BITCOIN_SCRIPT_ADDRESS_REGTEST 196

// bitcoin script opcodes: https://en.bitcoin.it/wiki/Script#Constants
#define OP_0 0x00
Expand Down
9 changes: 9 additions & 0 deletions BRBIP32Sequence.c
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Expand Up @@ -29,8 +29,17 @@
#include <assert.h>

#define BIP32_SEED_KEY "Bitcoin seed"

#if BITCOIN_TESTNET
#define BIP32_XPRV "\x04\x35\x83\x94"
#define BIP32_XPUB "\x04\x35\x87\xCF"
#elif BITCOIN_REGTEST
#define BIP32_XPRV "\x04\x35\x83\x94"
#define BIP32_XPUB "\x04\x35\x87\xCF"
#else
#define BIP32_XPRV "\x04\x88\xAD\xE4"
#define BIP32_XPUB "\x04\x88\xB2\x1E"
#endif

// BIP32 is a scheme for deriving chains of addresses from a seed value
// https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki
Expand Down
9 changes: 9 additions & 0 deletions BRKey.c
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@

#define BITCOIN_PRIVKEY 128
#define BITCOIN_PRIVKEY_TEST 239
#define BITCOIN_PRIVKEY_REGTEST 239

#if __BIG_ENDIAN__ || (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) ||\
__ARMEB__ || __THUMBEB__ || __AARCH64EB__ || __MIPSEB__
Expand Down Expand Up @@ -132,6 +133,8 @@ int BRPrivKeyIsValid(const char *privKey)
if (dataLen == 33 || dataLen == 34) { // wallet import format: https://en.bitcoin.it/wiki/Wallet_import_format
#if BITCOIN_TESTNET
r = (data[0] == BITCOIN_PRIVKEY_TEST);
#elif BITCOIN_REGTEST
r = (data[0] == BITCOIN_PRIVKEY_REGTEST);
#else
r = (data[0] == BITCOIN_PRIVKEY);
#endif
Expand Down Expand Up @@ -174,6 +177,8 @@ int BRKeySetPrivKey(BRKey *key, const char *privKey)

#if BITCOIN_TESTNET
version = BITCOIN_PRIVKEY_TEST;
#elif BITCOIN_REGTEST
version = BITCOIN_PRIVKEY_REGTEST;
#endif

assert(key != NULL);
Expand Down Expand Up @@ -235,6 +240,8 @@ size_t BRKeyPrivKey(const BRKey *key, char *privKey, size_t pkLen)
data[0] = BITCOIN_PRIVKEY;
#if BITCOIN_TESTNET
data[0] = BITCOIN_PRIVKEY_TEST;
#elif BITCOIN_REGTEST
data[0] = BITCOIN_PRIVKEY_REGTEST;
#endif

UInt256Set(&data[1], key->secret);
Expand Down Expand Up @@ -294,6 +301,8 @@ size_t BRKeyAddress(BRKey *key, char *addr, size_t addrLen)
data[0] = BITCOIN_PUBKEY_ADDRESS;
#if BITCOIN_TESTNET
data[0] = BITCOIN_PUBKEY_ADDRESS_TEST;
#elif BITCOIN_REGTEST
data[0] = BITCOIN_PUBKEY_ADDRESS_REGTEST;
#endif
UInt160Set(&data[1], hash);

Expand Down
9 changes: 8 additions & 1 deletion BRMerkleBlock.c
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Expand Up @@ -31,7 +31,11 @@
#include <string.h>
#include <assert.h>

#if BITCOIN_REGTEST
#define MAX_PROOF_OF_WORK 0x207fffff
#else
#define MAX_PROOF_OF_WORK 0x1d00ffff // highest value for difficulty target (higher values are less difficult)
#endif
#define TARGET_TIMESPAN (14*24*60*60) // the targeted timespan between difficulty target adjustments

inline static int _ceil_log2(int x)
Expand Down Expand Up @@ -324,8 +328,11 @@ int BRMerkleBlockVerifyDifficulty(const BRMerkleBlock *block, const BRMerkleBloc
#if BITCOIN_TESTNET
// TODO: implement testnet difficulty rule check
return r; // don't worry about difficulty on testnet for now
#elif BITCOIN_REGTEST
// TODO: implement testnet difficulty rule check
return r; // don't worry about difficulty on testnet for now
#endif

if (r && (block->height % BLOCK_DIFFICULTY_INTERVAL) == 0) {
// target is in "compact" format, where the most significant byte is the size of resulting value in bytes, next
// bit is the sign, and the remaining 23bits is the value after having been right shifted by (size - 3)*8 bits
Expand Down
2 changes: 2 additions & 0 deletions BRPeer.c
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Expand Up @@ -45,6 +45,8 @@

#if BITCOIN_TESTNET
#define MAGIC_NUMBER 0x0709110b
#elif BITCOIN_REGTEST
#define MAGIC_NUMBER 0xdab5bffa
#else
#define MAGIC_NUMBER 0xd9b4bef9
#endif
Expand Down
2 changes: 2 additions & 0 deletions BRPeer.h
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Expand Up @@ -54,6 +54,8 @@ extern "C" {

#if BITCOIN_TESTNET
#define STANDARD_PORT 18333
#elif BITCOIN_REGTEST
#define STANDARD_PORT 18444
#else
#define STANDARD_PORT 8333
#endif
Expand Down
10 changes: 10 additions & 0 deletions BRPeerManager.c
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Expand Up @@ -69,6 +69,16 @@ static const char *dns_seeds[] = {
"testnet-seed.bitcoin.schildbach.de."
};

#elif BITCOIN_REGTEST

static const struct { uint32_t height; const char *hash; uint32_t timestamp; uint32_t target; } checkpoint_array[] = {
{ 0, "0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206", 1296688602, 0x207fffff }
};

static const char *dns_seeds[] = {
"example.com"
};

#else // main net

// blockchain checkpoints - these are also used as starting points for partial chain downloads, so they need to be at
Expand Down