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76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
#include "SchemaAllowedHandler.h"
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#if USE_ODBC
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# include <IO/WriteBufferFromHTTPServerResponse.h>
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# include <IO/WriteHelpers.h>
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# include <Poco/Data/ODBC/ODBCException.h>
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# include <Poco/Data/ODBC/SessionImpl.h>
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# include <Poco/Data/ODBC/Utility.h>
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# include <Poco/Net/HTMLForm.h>
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# include <Poco/Net/HTTPServerRequest.h>
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# include <Poco/Net/HTTPServerResponse.h>
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# include <common/logger_useful.h>
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# include "validateODBCConnectionString.h"
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# define POCO_SQL_ODBC_CLASS Poco::Data::ODBC
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namespace DB
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{
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namespace
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{
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bool isSchemaAllowed(SQLHDBC hdbc)
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{
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SQLUINTEGER value;
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SQLSMALLINT value_length = sizeof(value);
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SQLRETURN r = POCO_SQL_ODBC_CLASS::SQLGetInfo(hdbc, SQL_SCHEMA_USAGE, &value, sizeof(value), &value_length);
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if (POCO_SQL_ODBC_CLASS::Utility::isError(r))
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throw POCO_SQL_ODBC_CLASS::ConnectionException(hdbc);
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return value != 0;
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}
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}
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void SchemaAllowedHandler::handleRequest(Poco::Net::HTTPServerRequest & request, Poco::Net::HTTPServerResponse & response)
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{
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Poco::Net::HTMLForm params(request, request.stream());
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LOG_TRACE(log, "Request URI: {}", request.getURI());
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auto process_error = [&response, this](const std::string & message)
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{
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response.setStatusAndReason(Poco::Net::HTTPResponse::HTTP_INTERNAL_SERVER_ERROR);
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if (!response.sent())
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response.send() << message << std::endl;
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LOG_WARNING(log, message);
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};
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if (!params.has("connection_string"))
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{
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process_error("No 'connection_string' in request URL");
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return;
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}
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try
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{
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std::string connection_string = params.get("connection_string");
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POCO_SQL_ODBC_CLASS::SessionImpl session(validateODBCConnectionString(connection_string), DBMS_DEFAULT_CONNECT_TIMEOUT_SEC);
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SQLHDBC hdbc = session.dbc().handle();
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bool result = isSchemaAllowed(hdbc);
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WriteBufferFromHTTPServerResponse out(request, response, keep_alive_timeout);
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writeBoolText(result, out);
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}
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catch (...)
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{
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process_error("Error getting schema usage from ODBC '" + getCurrentExceptionMessage(false) + "'");
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tryLogCurrentException(log);
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}
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}
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}
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#endif
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