72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* Copyright 2012 Luke Dashjr
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the standard MIT license. See COPYING for more details.
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*/
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#ifndef WIN32
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#include <arpa/inet.h>
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#else
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#include <winsock2.h>
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#endif
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#include <stdbool.h>
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#include <stdint.h>
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#include <string.h>
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#include <libbase58.h>
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#include <blkmaker.h>
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#include "private.h"
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bool _blkmk_b58tobin(void *bin, size_t binsz, const char *b58, size_t b58sz) {
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return b58tobin(bin, &binsz, b58, b58sz);
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}
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int _blkmk_b58check(void *bin, size_t binsz, const char *base58str) {
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if (!b58_sha256_impl)
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b58_sha256_impl = blkmk_sha256_impl;
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return b58check(bin, binsz, base58str, 34);
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}
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size_t blkmk_address_to_script(void *out, size_t outsz, const char *addr) {
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unsigned char addrbin[25];
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unsigned char *cout = out;
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const size_t b58sz = strlen(addr);
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int addrver;
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size_t rv;
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rv = sizeof(addrbin);
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if (!b58_sha256_impl)
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b58_sha256_impl = blkmk_sha256_impl;
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if (!b58tobin(addrbin, &rv, addr, b58sz))
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return 0;
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addrver = b58check(addrbin, sizeof(addrbin), addr, b58sz);
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switch (addrver) {
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case 0: // Bitcoin pubkey hash
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case 111: // Testnet pubkey hash
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if (outsz < (rv = 25))
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return rv;
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cout[ 0] = 0x76; // OP_DUP
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cout[ 1] = 0xa9; // OP_HASH160
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cout[ 2] = 0x14; // push 20 bytes
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memcpy(&cout[3], &addrbin[1], 20);
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cout[23] = 0x88; // OP_EQUALVERIFY
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cout[24] = 0xac; // OP_CHECKSIG
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return rv;
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case 5: // Bitcoin script hash
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case 196: // Testnet script hash
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if (outsz < (rv = 23))
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return rv;
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cout[ 0] = 0xa9; // OP_HASH160
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cout[ 1] = 0x14; // push 20 bytes
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memcpy(&cout[2], &addrbin[1], 20);
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cout[22] = 0x87; // OP_EQUAL
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return rv;
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default:
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return 0;
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}
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}
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