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45 lines
1.5 KiB
C++
45 lines
1.5 KiB
C++
#include <Common/isLocalAddress.h>
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#include <cstring>
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#include <Core/Types.h>
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#include <Poco/Util/Application.h>
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#include <Poco/Net/NetworkInterface.h>
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#include <Poco/Net/SocketAddress.h>
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namespace DB
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{
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bool isLocalAddress(const Poco::Net::IPAddress & address)
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{
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static auto interfaces = Poco::Net::NetworkInterface::list();
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return interfaces.end() != std::find_if(interfaces.begin(), interfaces.end(),
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[&] (const Poco::Net::NetworkInterface & interface)
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{
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/** Compare the addresses without taking into account `scope`.
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* Theoretically, this may not be correct - depends on `route` setting
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* - through which interface we will actually access the specified address.
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*/
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return interface.address().length() == address.length()
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&& 0 == memcmp(interface.address().addr(), address.addr(), address.length());
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});
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}
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bool isLocalAddress(const Poco::Net::SocketAddress & address, UInt16 clickhouse_port)
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{
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return clickhouse_port == address.port() && isLocalAddress(address.host());
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}
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size_t getHostNameDifference(const std::string & local_hostname, const std::string & host)
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{
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size_t hostname_difference = 0;
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for (size_t i = 0; i < std::min(local_hostname.length(), host.length()); ++i)
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if (local_hostname[i] != host[i])
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++hostname_difference;
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return hostname_difference;
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}
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}
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