59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
#include "bitcoin/block.h"
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#include "bitcoin/pullpush.h"
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#include "bitcoin/tx.h"
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#include <ccan/str/hex/hex.h>
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const struct sha256_double genesis_blockhash
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= { { .u.u8 = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x19, 0xd6, 0x68,
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0x9c, 0x08, 0x5a, 0xe1, 0x65, 0x83, 0x1e, 0x93,
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0x4f, 0xf7, 0x63, 0xae, 0x46, 0xa2, 0xa6, 0xc1,
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0x72, 0xb3, 0xf1, 0xb6, 0x0a, 0x8c, 0xe2, 0x6f
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} } };
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/* Encoding is <blockhdr> <varint-num-txs> <tx>... */
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struct bitcoin_block *bitcoin_block_from_hex(const tal_t *ctx,
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const char *hex, size_t hexlen)
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{
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struct bitcoin_block *b;
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u8 *linear_tx;
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const u8 *p;
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size_t len, i, num;
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if (hexlen && hex[hexlen-1] == '\n')
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hexlen--;
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/* Set up the block for success. */
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b = tal(ctx, struct bitcoin_block);
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/* De-hex the array. */
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len = hex_data_size(hexlen);
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p = linear_tx = tal_arr(ctx, u8, len);
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if (!hex_decode(hex, hexlen, linear_tx, len))
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return tal_free(b);
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pull(&p, &len, &b->hdr, sizeof(b->hdr));
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num = pull_varint(&p, &len);
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b->tx = tal_arr(b, struct bitcoin_tx *, num);
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for (i = 0; i < num; i++)
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b->tx[i] = pull_bitcoin_tx(b->tx, &p, &len);
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/* We should end up not overrunning, nor have extra */
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if (!p || len)
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return tal_free(b);
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tal_free(linear_tx);
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return b;
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}
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bool bitcoin_blkid_from_hex(const char *hexstr, size_t hexstr_len,
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struct sha256_double *blockid)
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{
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return bitcoin_txid_from_hex(hexstr, hexstr_len, blockid);
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}
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bool bitcoin_blkid_to_hex(const struct sha256_double *blockid,
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char *hexstr, size_t hexstr_len)
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{
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return bitcoin_txid_to_hex(blockid, hexstr, hexstr_len);
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}
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