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add script parsing functions

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Pavol Rusnak 2016-05-16 14:43:09 +02:00
parent aae96e8285
commit 31e05edca7
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GPG Key ID: 91F3B339B9A02A3D
4 changed files with 122 additions and 0 deletions
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1
Makefile
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@ -37,6 +37,7 @@ CFLAGS += -DUSE_PRECOMPUTED_IV=0 -DUSE_PRECOMPUTED_CP=0
endif
SRCS = bignum.c ecdsa.c curves.c secp256k1.c nist256p1.c rand.c hmac.c bip32.c bip39.c pbkdf2.c base58.c
SRCS += script.c
SRCS += ripemd160.c
SRCS += sha2.c
SRCS += sha3.c

64
script.c Normal file
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@ -0,0 +1,64 @@
/**
* Copyright (c) 2016 Pavol Rusnak
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include <string.h>
#include "base58.h"
#include "script.h"
int script_output_to_address(const uint8_t *script, int scriptlen, char *addr, int addrsize)
{
uint8_t raw[35];
// P2PKH
if (scriptlen == 25 && script[0] == 0x76 && script[1] == 0xA9 && script[2] == 0x14 && script[23] == 0x88 && script[24] == 0xAC) {
raw[0] = 0x00;
memcpy(raw + 1, script + 3, 20);
return base58_encode_check(raw, 1 + 20, addr, addrsize);
}
// P2SH
if (scriptlen == 23 && script[0] == 0xA9 && script[1] == 0x14 && script[22] == 0x87) {
raw[0] = 0x05;
memcpy(raw + 1, script + 2, 20);
return base58_encode_check(raw, 1 + 20, addr, addrsize);
}
// P2WPKH
if (scriptlen == 22 && script[0] == 0x00 && script[1] == 0x14) {
raw[0] = 0x06;
raw[1] = 0x00;
raw[2] = 0x00;
memcpy(raw + 3, script + 2, 20);
return base58_encode_check(raw, 3 + 20, addr, addrsize);
}
// P2WSH
if (scriptlen == 34 && script[0] == 0x00 && script[1] == 0x20) {
raw[0] = 0x0A;
raw[1] = 0x00;
raw[2] = 0x00;
memcpy(raw + 3, script + 2, 32);
return base58_encode_check(raw, 3 + 32, addr, addrsize);
}
return 0;
}

30
script.h Normal file
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@ -0,0 +1,30 @@
/**
* Copyright (c) 2016 Pavol Rusnak
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __SCRIPT_H__
#define __SCRIPT_H__
#include <stdint.h>
int script_output_to_address(const uint8_t *script, int scriptlen, char *addr, int addrsize);
#endif

27
tests.c
View File

@ -42,6 +42,7 @@
#include "secp256k1.h"
#include "nist256p1.h"
#include "ed25519.h"
#include "script.h"
uint8_t *fromhex(const char *str)
{
@ -1872,6 +1873,28 @@ START_TEST(test_ed25519) {
}
END_TEST
START_TEST(test_output_script) {
static const char *vectors[] = {
"76A914010966776006953D5567439E5E39F86A0D273BEE88AC", "16UwLL9Risc3QfPqBUvKofHmBQ7wMtjvM",
"A914010966776006953D5567439E5E39F86A0D273BEE87", "31nVrspaydBz8aMpxH9WkS2DuhgqS1fCuG",
"0014010966776006953D5567439E5E39F86A0D273BEE", "p2xtZoXeX5X8BP8JfFhQK2nD3emtjch7UeFm",
"00200102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F20", "7XhPD7te3C6CVKnJWUhrTJbFTwudhHqfrjpS59AS6sMzL4RYFiCNg",
0, 0,
};
const char **scr, **adr;
scr = vectors;
adr = vectors + 1;
char address[60];
while (*scr && *adr) {
int r = script_output_to_address(fromhex(*scr), strlen(*scr)/2, address, 60);
ck_assert_int_eq(r, strlen(*adr) + 1);
ck_assert_str_eq(address, *adr);
scr += 2;
adr += 2;
}
}
END_TEST
// define test suite and cases
Suite *test_suite(void)
@ -1975,6 +1998,10 @@ Suite *test_suite(void)
tcase_add_test(tc, test_ed25519);
suite_add_tcase(s, tc);
tc = tcase_create("script");
tcase_add_test(tc, test_output_script);
suite_add_tcase(s, tc);
return s;
}