Esempio n. 1
0
bool version::from_data(reader& source)
{
    reset();
    value = source.read_4_bytes_little_endian();
    services = source.read_8_bytes_little_endian();
    timestamp = source.read_8_bytes_little_endian();
    auto result = static_cast<bool>(source);
    if (result)
        result = address_me.from_data(source, false);

    if (result && (value >= 106))
    {
        result = address_you.from_data(source, false);
        nonce = source.read_8_bytes_little_endian();
        user_agent = source.read_string();
        if (value >= 209)
            start_height = source.read_4_bytes_little_endian();

        // The satoshi client treats 209 as the "initial protocol version"
        // and disconnects peers below 31800 (for getheaders support).
        if (value >= 70001)
            relay = (source.read_byte() != 0);

        result &= source;
    }

    if (!result)
        reset();

    return result;
}
Esempio n. 2
0
bool operation::from_data(reader& source)
{
    reset();
    const auto byte = source.read_byte();
    auto result = static_cast<bool>(source);

    auto op_code = static_cast<opcode>(byte);
    if (byte == 0 && op_code != opcode::zero)
        return false;

    code = ((0 < byte && byte <= 75) ? opcode::special : op_code);

    if (operation::must_read_data(code))
    {
        uint32_t size;
        read_opcode_data_size(size, code, byte, source);
        data = source.read_data(size);
        result = (source && (data.size() == size));

    }

    if (!result)
        reset();

    return result;
}
Esempio n. 3
0
// Avoid point reuse due to affect on store tx serialization.
bool payment_record::from_data(reader& source, bool wire)
{
    valid_ = true;
    output_ = (source.read_byte() == 1);

    if (wire)
    {
        height_ = source.read_4_bytes_little_endian();
        link_ = unlinked;
        hash_ = source.read_hash();
        index_ = source.read_4_bytes_little_endian();
    }
    else
    {
        height_ = 0;
        link_ = source.read_8_bytes_little_endian();
        hash_ = null_hash;
        index_ = source.read_2_bytes_little_endian();

        // Convert 16 bit sentinel to 32 bit sentinel.
        if (index_ == max_uint16)
            index_ = point::null_index;
    }

    data_ = source.read_8_bytes_little_endian();

    if (!source)
        reset();

    return source;
}
Esempio n. 4
0
bool header::from_data(uint32_t version, reader& source)
{
    if (!chain::header::from_data(source))
        return false;

    // The header message must trail a zero byte (yes, it's stoopid).
    // bitcoin.org/en/developer-reference#headers
    if (version != version::level::canonical && source.read_byte() != 0x00)
        source.invalidate();

    if (!source)
        reset();

    return source;
}
Esempio n. 5
0
bool send_compact::from_data(uint32_t version,
    reader& source)
{
    reset();

    const auto mode = source.read_byte();

    if (mode > 1)
        source.invalidate();

    high_bandwidth_mode_ = (mode == 1);
    this->version_ = source.read_8_bytes_little_endian();

    if (version < send_compact::version_minimum)
        source.invalidate();

    if (!source)
        reset();

    return source;
}
Esempio n. 6
0
bool operation::read_opcode_data_size(uint32_t& count, opcode code,
    uint8_t raw_byte, reader& source)
{
    switch (code)
    {
        case opcode::special:
            count = raw_byte;
            return true;
        case opcode::pushdata1:
            count = source.read_byte();
            return true;
        case opcode::pushdata2:
            count = source.read_2_bytes_little_endian();
            return true;
        case opcode::pushdata4:
            count = source.read_4_bytes_little_endian();
            return true;
        default:
            return false;
    }
}
Esempio n. 7
0
bool reject::from_data(reader& source)
{
    bool result = 0;

    reset();

    message = source.read_string();
    code = error_code_from_byte(source.read_byte());
    reason = source.read_string();

    if ((message == chain::block::command) ||
        (message == chain::transaction::command))
    {
        data = source.read_hash();
    }

    result = source;

    if (!result)
        reset();

    return result;
}
Esempio n. 8
0
bool filter_load::from_data(reader& source)
{
    bool result = false;

    reset();

    uint64_t filter_size = source.read_variable_uint_little_endian();
    result = source;

    if (result)
    {
        filter = source.read_data(filter_size);
        hash_functions = source.read_4_bytes_little_endian();
        tweak = source.read_4_bytes_little_endian();
        flags = source.read_byte();
        result = source && (filter.size() == filter_size);
    }

    if (!result)
        reset();

    return result;
}