Method getBytesFromAddress

src/pystack/_pystack/process.cpp:565–600

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// ----------------------------------------------------------------------------
std::string
AbstractProcessManager::getBytesFromAddress(remote_addr_t addr) const
{
    ssize_t len;
    std::vector<char> buffer;
    remote_addr_t data_addr;

    if (d_major == 2) {
        LOG(DEBUG) << std::hex << std::showbase << "Handling bytes object of version 2 from address "
                   << addr;
        Python2::_PyStringObject string;
        copyObjectFromProcess(addr, &string);
        len = string.ob_base.ob_size + 1;
        buffer.resize(len);
        data_addr = (remote_addr_t)((char*)addr + offsetof(Python2::_PyStringObject, ob_sval));
        LOG(DEBUG) << std::hex << std::showbase << "Copying data for bytes object from address "
                   << data_addr;
        copyMemoryFromProcess(data_addr, len, buffer.data());
    } else {
        LOG(DEBUG) << std::hex << std::showbase << "Handling bytes object of version 3 from address "
                   << addr;
        Structure<py_bytes_v> bytes(shared_from_this(), addr);
        len = bytes.getField(&py_bytes_v::o_ob_size) + 1;
        if (len < 1) {
            throw std::runtime_error("Incorrect size of the fetched bytes object");
        }
        buffer.resize(len);
        data_addr = bytes.getFieldRemoteAddress(&py_bytes_v::o_ob_sval);

        LOG(DEBUG) << std::hex << std::showbase << "Copying data for bytes object from address "
                   << data_addr;
        copyMemoryFromProcess(data_addr, len, buffer.data());
    }

    return std::string(buffer.begin(), buffer.end() - 1);
}

remote_addr_t
AbstractProcessManager::findSymbol(const std::string& symbol) const