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elements: Implement block parsing for elements block headers

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Since the difference between non-elements and elements block headers is just
the middle 2 fields, I split the old parsing code so I could add the middle
part.

Signed-off-by: Christian Decker <decker.christian@gmail.com>
This commit is contained in:
Christian Decker 2019-04-12 21:57:52 +02:00 committed by Rusty Russell
parent a300dea7e6
commit 4553b5c2f2
2 changed files with 33 additions and 1 deletions
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23
bitcoin/block.c
View File

@ -26,7 +26,28 @@ bitcoin_block_from_hex(const tal_t *ctx, const struct chainparams *chainparams,
if (!hex_decode(hex, hexlen, linear_tx, len))
return tal_free(b);
pull(&p, &len, &b->hdr, sizeof(b->hdr));
b->hdr.version = pull_le32(&p, &len);
pull(&p, &len, &b->hdr.prev_hash, sizeof(b->hdr.prev_hash));
pull(&p, &len, &b->hdr.merkle_hash, sizeof(b->hdr.merkle_hash));
b->hdr.timestamp = pull_le32(&p, &len);
if (is_elements) {
b->elements_hdr = tal(b, struct elements_block_hdr);
b->elements_hdr->block_height = pull_le32(&p, &len);
size_t challenge_len = pull_varint(&p, &len);
b->elements_hdr->proof.challenge = tal_arr(b->elements_hdr, u8, challenge_len);
pull(&p, &len, b->elements_hdr->proof.challenge, challenge_len);
size_t solution_len = pull_varint(&p, &len);
b->elements_hdr->proof.solution = tal_arr(b->elements_hdr, u8, solution_len);
pull(&p, &len, b->elements_hdr->proof.solution, solution_len);
} else {
b->hdr.target = pull_le32(&p, &len);
b->hdr.nonce = pull_le32(&p, &len);
}
num = pull_varint(&p, &len);
b->tx = tal_arr(b, struct bitcoin_tx *, num);
for (i = 0; i < num; i++) {

11
bitcoin/block.h
View File

@ -25,8 +25,19 @@ struct bitcoin_block_hdr {
le32 nonce;
};
struct elements_block_proof {
u8 *challenge;
u8 *solution;
};
struct elements_block_hdr {
u32 block_height;
struct elements_block_proof proof;
};
struct bitcoin_block {
struct bitcoin_block_hdr hdr;
struct elements_block_hdr *elements_hdr;
/* tal_count shows now many */
struct bitcoin_tx **tx;
};