mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-21 15:12:02 +00:00
110 lines
3.5 KiB
C++
110 lines
3.5 KiB
C++
#include "SchemaAllowedHandler.h"
|
|
|
|
#if USE_ODBC
|
|
|
|
#include <Core/Settings.h>
|
|
#include <Server/HTTP/HTMLForm.h>
|
|
#include <Server/HTTP/WriteBufferFromHTTPServerResponse.h>
|
|
#include <IO/Operators.h>
|
|
#include <IO/ReadHelpers.h>
|
|
#include <IO/WriteHelpers.h>
|
|
#include <Poco/Net/HTTPServerRequest.h>
|
|
#include <Poco/Net/HTTPServerResponse.h>
|
|
#include <Common/BridgeProtocolVersion.h>
|
|
#include <Common/logger_useful.h>
|
|
#include "validateODBCConnectionString.h"
|
|
#include "ODBCPooledConnectionFactory.h"
|
|
#include <sql.h>
|
|
#include <sqlext.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
namespace Setting
|
|
{
|
|
extern const SettingsUInt64 odbc_bridge_connection_pool_size;
|
|
}
|
|
|
|
namespace
|
|
{
|
|
bool isSchemaAllowed(nanodbc::ConnectionHolderPtr connection_holder)
|
|
{
|
|
uint32_t result = execute<uint32_t>(connection_holder,
|
|
[&](nanodbc::connection & connection) { return connection.get_info<uint32_t>(SQL_SCHEMA_USAGE); });
|
|
return result != 0;
|
|
}
|
|
}
|
|
|
|
|
|
void SchemaAllowedHandler::handleRequest(HTTPServerRequest & request, HTTPServerResponse & response, const ProfileEvents::Event & /*write_event*/)
|
|
{
|
|
HTMLForm params(getContext()->getSettingsRef(), request, request.getStream());
|
|
LOG_TRACE(log, "Request URI: {}", request.getURI());
|
|
|
|
auto process_error = [&response, this](const std::string & message)
|
|
{
|
|
response.setStatusAndReason(Poco::Net::HTTPResponse::HTTP_INTERNAL_SERVER_ERROR);
|
|
if (!response.sent())
|
|
*response.send() << message << '\n';
|
|
LOG_WARNING(log, fmt::runtime(message));
|
|
};
|
|
|
|
size_t version;
|
|
|
|
if (!params.has("version"))
|
|
version = 0; /// assumed version for too old servers which do not send a version
|
|
else
|
|
{
|
|
String version_str = params.get("version");
|
|
if (!tryParse(version, version_str))
|
|
{
|
|
process_error("Unable to parse 'version' string in request URL: '" + version_str + "' Check if the server and library-bridge have the same version.");
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (version != XDBC_BRIDGE_PROTOCOL_VERSION)
|
|
{
|
|
/// backwards compatibility is considered unnecessary for now, just let the user know that the server and the bridge must be upgraded together
|
|
process_error("Server and library-bridge have different versions: '" + std::to_string(version) + "' vs. '" + std::to_string(LIBRARY_BRIDGE_PROTOCOL_VERSION) + "'");
|
|
return;
|
|
}
|
|
|
|
|
|
if (!params.has("connection_string"))
|
|
{
|
|
process_error("No 'connection_string' in request URL");
|
|
return;
|
|
}
|
|
|
|
bool use_connection_pooling = params.getParsed<bool>("use_connection_pooling", true);
|
|
|
|
try
|
|
{
|
|
std::string connection_string = params.get("connection_string");
|
|
|
|
nanodbc::ConnectionHolderPtr connection;
|
|
|
|
if (use_connection_pooling)
|
|
connection = ODBCPooledConnectionFactory::instance().get(
|
|
validateODBCConnectionString(connection_string), getContext()->getSettingsRef()[Setting::odbc_bridge_connection_pool_size]);
|
|
else
|
|
connection = std::make_shared<nanodbc::ConnectionHolder>(validateODBCConnectionString(connection_string));
|
|
|
|
bool result = isSchemaAllowed(std::move(connection));
|
|
|
|
WriteBufferFromHTTPServerResponse out(response, request.getMethod() == Poco::Net::HTTPRequest::HTTP_HEAD);
|
|
writeBoolText(result, out);
|
|
out.finalize();
|
|
}
|
|
catch (...)
|
|
{
|
|
process_error("Error getting schema usage from ODBC '" + getCurrentExceptionMessage(false) + "'");
|
|
tryLogCurrentException(log);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|