Function segwit_addr_decode

common/bech32.c:193–210

}

int segwit_addr_decode(int* witver, uint8_t* witdata, size_t* witdata_len, const char* hrp, const char* addr) {
    uint8_t data[84];
    char hrp_actual[84];
    size_t data_len;
    bech32_encoding enc = bech32_decode(hrp_actual, data, &data_len, addr, 90);
    if (enc == BECH32_ENCODING_NONE) return 0;
    if (data_len == 0 || data_len > 65) return 0;
    if (strncmp(hrp, hrp_actual, 84) != 0) return 0;
    if (data[0] > 16) return 0;
    if (data[0] == 0 && enc != BECH32_ENCODING_BECH32) return 0;
    if (data[0] > 0 && enc != BECH32_ENCODING_BECH32M) return 0;
    *witdata_len = 0;
    if (!bech32_convert_bits(witdata, witdata_len, 8, data + 1, data_len - 1, 5, 0)) return 0;
    if (*witdata_len < 2 || *witdata_len > 40) return 0;
    if (data[0] == 0 && *witdata_len != 20 && *witdata_len != 32) return 0;
    *witver = data[0];
    return 1;
}