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4cc3eaf79c
I did this by copying the updated bech32 code, and then re-patching in our minor changes: 1. Headers modded (we need size_t) 2. Explicit length for bech32_encode/decode (not 90). 3. Exposing and bech32_ prefix for convert_bits, charset, charset_rev. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
#include <stdint.h>
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#include <string.h>
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#include <tests/fuzz/libfuzz.h>
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#include <common/bech32.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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const char hrp_inv[5] = "lnbc\0", hrp_addr[3] = "bc\0";
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char *bech32_str, *hrp_out, *addr;
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uint8_t *data_out;
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size_t data_out_len;
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int wit_version;
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bech32_encoding benc;
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/* Buffer size is defined in each function's doc comment. */
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bech32_str = malloc(size + strlen(hrp_inv) + 8);
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benc = data[0] ? BECH32_ENCODING_BECH32 : BECH32_ENCODING_BECH32M;
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/* FIXME: needs a dictionary / a startup seed corpus to pass this more
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* frequently. */
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if (bech32_encode(bech32_str, hrp_inv, data+1, size-1, size-1, benc) == 1) {
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hrp_out = malloc(strlen(bech32_str) - 6);
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data_out = malloc(strlen(bech32_str) - 8);
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assert(bech32_decode(hrp_out, data_out, &data_out_len, bech32_str, size) == benc);
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free(hrp_out);
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free(data_out);
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}
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free(bech32_str);
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data_out = malloc(size);
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/* This is also used as part of sign and check message. */
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data_out_len = 0;
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bech32_convert_bits(data_out, &data_out_len, 8, data, size, 5, 1);
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data_out_len = 0;
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bech32_convert_bits(data_out, &data_out_len, 8, data, size, 5, 0);
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addr = malloc(73 + strlen(hrp_addr));
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wit_version = 0;
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if (segwit_addr_encode(addr, hrp_addr, wit_version, data, size) == 1)
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segwit_addr_decode(&wit_version, data_out, &data_out_len, hrp_addr, addr);
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wit_version = 1;
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if (segwit_addr_encode(addr, hrp_addr, wit_version, data, size) == 1)
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segwit_addr_decode(&wit_version, data_out, &data_out_len, hrp_addr, addr);
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free(addr);
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free(data_out);
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}
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