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71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
#include <assert.h>
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#include <bitcoin/pubkey.h>
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#include <bitcoin/tx.h>
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#include <stdint.h>
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#include <string.h>
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#include <tests/fuzz/libfuzz.h>
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#include <ccan/tal/tal.h>
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#include <common/channel_id.h>
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#include <wire/wire.h>
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void init(int *argc, char ***argv)
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{
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}
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void run(const uint8_t *data, size_t size)
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{
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struct channel_id chan_id;
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struct pubkey basepoint_1, basepoint_2;
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struct bitcoin_txid txid;
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uint16_t vout;
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const uint8_t **v1_chunks, **v2_chunks, **marshal_chunks;
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const uint8_t *wire_ptr;
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size_t wire_max;
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uint8_t *wire_buf;
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if (size < 34)
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return;
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/* 32 (txid) + 2 (vout ala LN) */
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v1_chunks = get_chunks(NULL, data, size, 34);
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for (size_t i = 0; i < tal_count(v1_chunks); i++) {
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wire_ptr = v1_chunks[i];
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wire_max = 32;
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fromwire_bitcoin_txid(&wire_ptr, &wire_max, &txid);
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assert(wire_ptr);
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wire_max = 2;
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vout = fromwire_u16(&wire_ptr, &wire_max);
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derive_channel_id(&chan_id, &txid, vout);
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}
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tal_free(v1_chunks);
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v2_chunks = get_chunks(NULL, data, size, PUBKEY_CMPR_LEN * 2);
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for (size_t i = 0; i < tal_count(v2_chunks); i++) {
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wire_ptr = v2_chunks[i];
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wire_max = PUBKEY_CMPR_LEN;
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fromwire_pubkey(&wire_ptr, &wire_max, &basepoint_1);
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if (!wire_ptr)
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continue;
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wire_max = PUBKEY_CMPR_LEN;
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fromwire_pubkey(&wire_ptr, &wire_max, &basepoint_2);
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if (!wire_ptr)
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continue;
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derive_channel_id_v2(&chan_id, &basepoint_1, &basepoint_2);
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}
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tal_free(v2_chunks);
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marshal_chunks = get_chunks(NULL, data, size, 32);
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for (size_t i = 0; i < tal_count(marshal_chunks); i++) {
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wire_ptr = marshal_chunks[i];
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wire_max = tal_count(marshal_chunks[i]);
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fromwire_channel_id(&wire_ptr, &wire_max, &chan_id);
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wire_buf = tal_arr(NULL, uint8_t, tal_count(marshal_chunks[i]));
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towire_channel_id(&wire_buf, &chan_id);
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tal_free(wire_buf);
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}
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tal_free(marshal_chunks);
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}
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