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/*
* Copyright (C) 2007 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "DatabaseAuthorizer.h"
#include "Database.h"
#include "PlatformString.h"
namespace WebCore {
DatabaseAuthorizer::DatabaseAuthorizer()
: m_securityEnabled(false)
{
reset();
}
void DatabaseAuthorizer::reset()
{
m_lastActionWasInsert = false;
m_lastActionChangedDatabase = false;
}
int DatabaseAuthorizer::createTable(const String& tableName)
{
m_lastActionChangedDatabase = true;
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::createTempTable(const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::dropTable(const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::dropTempTable(const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::allowAlterTable(const String& databaseName, const String& tableName)
{
m_lastActionChangedDatabase = true;
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::createIndex(const String& indexName, const String& tableName)
{
m_lastActionChangedDatabase = true;
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::createTempIndex(const String& indexName, const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::dropIndex(const String& indexName, const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::dropTempIndex(const String& indexName, const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::createTrigger(const String& triggerName, const String& tableName)
{
m_lastActionChangedDatabase = true;
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::createTempTrigger(const String& triggerName, const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::dropTrigger(const String& triggerName, const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::dropTempTrigger(const String& triggerName, const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::createVTable(const String& tableName, const String& moduleName)
{
m_lastActionChangedDatabase = true;
return m_securityEnabled ? SQLAuthDeny : SQLAuthAllow;
}
int DatabaseAuthorizer::dropVTable(const String& tableName, const String& moduleName)
{
return m_securityEnabled ? SQLAuthDeny : SQLAuthAllow;
}
int DatabaseAuthorizer::allowDelete(const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::allowInsert(const String& tableName)
{
m_lastActionChangedDatabase = true;
m_lastActionWasInsert = true;
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::allowUpdate(const String& tableName, const String& columnName)
{
m_lastActionChangedDatabase = true;
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::allowTransaction()
{
return m_securityEnabled ? SQLAuthDeny : SQLAuthAllow;
}
int DatabaseAuthorizer::allowRead(const String& tableName, const String& columnName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::allowAnalyze(const String& tableName)
{
return denyBasedOnTableName(tableName);
}
int DatabaseAuthorizer::allowPragma(const String& pragmaName, const String& firstArgument)
{
return m_securityEnabled ? SQLAuthDeny : SQLAuthAllow;
}
int DatabaseAuthorizer::allowAttach(const String& filename)
{
return m_securityEnabled ? SQLAuthDeny : SQLAuthAllow;
}
int DatabaseAuthorizer::allowDetach(const String& databaseName)
{
return m_securityEnabled ? SQLAuthDeny : SQLAuthAllow;
}
int DatabaseAuthorizer::allowFunction(const String& functionName)
{
// FIXME: Are there any of these we need to prevent? One might guess current_date, current_time, current_timestamp because
// they would violate the "sandbox environment" part of 4.11.3, but scripts can generate the local client side information via
// javascript directly, anyways. Are there any other built-ins we need to be worried about?
return SQLAuthAllow;
}
void DatabaseAuthorizer::disable()
{
m_securityEnabled = false;
}
void DatabaseAuthorizer::enable()
{
m_securityEnabled = true;
}
int DatabaseAuthorizer::denyBasedOnTableName(const String& tableName)
{
if (!m_securityEnabled)
return SQLAuthAllow;
// Sadly, normal creates and drops end up affecting sqlite_master in an authorizer callback, so
// it will be tough to enforce all of the following policies
//if (equalIgnoringCase(tableName, "sqlite_master") || equalIgnoringCase(tableName, "sqlite_temp_master") ||
// equalIgnoringCase(tableName, "sqlite_sequence") || equalIgnoringCase(tableName, Database::databaseInfoTableName()))
// return SQLAuthDeny;
if (equalIgnoringCase(tableName, Database::databaseInfoTableName()))
return SQLAuthDeny;
return SQLAuthAllow;
}
} // namespace WebCore
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