// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package com.cloud.api.dispatch;
import static org.apache.commons.lang.StringUtils.isNotBlank;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.StringTokenizer;
import java.util.regex.Matcher;
import javax.inject.Inject;
import org.apache.log4j.Logger;
import org.apache.cloudstack.acl.ControlledEntity;
import org.apache.cloudstack.acl.InfrastructureEntity;
import org.apache.cloudstack.acl.SecurityChecker;
import org.apache.cloudstack.acl.SecurityChecker.AccessType;
import org.apache.cloudstack.api.ACL;
import org.apache.cloudstack.api.ApiErrorCode;
import org.apache.cloudstack.api.BaseAsyncCreateCmd;
import org.apache.cloudstack.api.BaseCmd;
import org.apache.cloudstack.api.BaseCmd.CommandType;
import org.apache.cloudstack.api.EntityReference;
import org.apache.cloudstack.api.InternalIdentity;
import org.apache.cloudstack.api.Parameter;
import org.apache.cloudstack.api.ServerApiException;
import org.apache.cloudstack.api.command.admin.resource.ArchiveAlertsCmd;
import org.apache.cloudstack.api.command.admin.resource.DeleteAlertsCmd;
import org.apache.cloudstack.api.command.user.event.ArchiveEventsCmd;
import org.apache.cloudstack.api.command.user.event.DeleteEventsCmd;
import org.apache.cloudstack.api.command.user.event.ListEventsCmd;
import org.apache.cloudstack.context.CallContext;
import com.cloud.exception.InvalidParameterValueException;
import com.cloud.user.Account;
import com.cloud.user.AccountManager;
import com.cloud.utils.DateUtil;
import com.cloud.utils.db.EntityManager;
import com.cloud.utils.exception.CloudRuntimeException;
public class ParamProcessWorker implements DispatchWorker {
private static final Logger s_logger = Logger.getLogger(ParamProcessWorker.class.getName());
@Inject
protected AccountManager _accountMgr;
@Inject
protected EntityManager _entityMgr;
List<SecurityChecker> _secChecker;
public List<SecurityChecker> getSecChecker() {
return _secChecker;
}
@Inject
public void setSecChecker(List<SecurityChecker> secChecker) {
_secChecker = secChecker;
}
@Override
public void handle(final DispatchTask task) {
processParameters(task.getCmd(), task.getParams());
}
@SuppressWarnings({"unchecked", "rawtypes"})
public void processParameters(final BaseCmd cmd, final Map params) {
final Map<Object, AccessType> entitiesToAccess = new HashMap<Object, AccessType>();
final List<Field> cmdFields = cmd.getParamFields();
for (final Field field : cmdFields) {
final Parameter parameterAnnotation = field.getAnnotation(Parameter.class);
final Object paramObj = params.get(parameterAnnotation.name());
if (paramObj == null) {
if (parameterAnnotation.required()) {
throw new ServerApiException(ApiErrorCode.PARAM_ERROR, "Unable to execute API command " +
cmd.getCommandName().substring(0, cmd.getCommandName().length() - 8) +
" due to missing parameter " + parameterAnnotation.name());
}
continue;
}
// marshall the parameter into the correct type and set the field value
try {
setFieldValue(field, cmd, paramObj, parameterAnnotation);
} catch (final IllegalArgumentException argEx) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Unable to execute API command " + cmd.getCommandName() + " due to invalid value " + paramObj + " for parameter " +
parameterAnnotation.name());
}
throw new ServerApiException(ApiErrorCode.PARAM_ERROR, "Unable to execute API command " +
cmd.getCommandName().substring(0, cmd.getCommandName().length() - 8) + " due to invalid value " + paramObj + " for parameter " +
parameterAnnotation.name());
} catch (final ParseException parseEx) {
if (s_logger.isDebugEnabled()) {
s_logger.debug("Invalid date parameter " + paramObj + " passed to command " + cmd.getCommandName().substring(0, cmd.getCommandName().length() - 8));
}
throw new ServerApiException(ApiErrorCode.PARAM_ERROR, "Unable to parse date " + paramObj + " for command " +
cmd.getCommandName().substring(0, cmd.getCommandName().length() - 8) + ", please pass dates in the format mentioned in the api documentation");
} catch (final InvalidParameterValueException invEx) {
throw new ServerApiException(ApiErrorCode.PARAM_ERROR, "Unable to execute API command " +
cmd.getCommandName().substring(0, cmd.getCommandName().length() - 8) + " due to invalid value. " + invEx.getMessage());
} catch (final CloudRuntimeException cloudEx) {
s_logger.error("CloudRuntimeException", cloudEx);
// FIXME: Better error message? This only happens if the API command is not executable, which typically
//means
// there was
// and IllegalAccessException setting one of the parameters.
throw new ServerApiException(ApiErrorCode.INTERNAL_ERROR, "Internal error executing API command " +
cmd.getCommandName().substring(0, cmd.getCommandName().length() - 8));
}
//check access on the resource this field points to
try {
final ACL checkAccess = field.getAnnotation(ACL.class);
final CommandType fieldType = parameterAnnotation.type();
if (checkAccess != null) {
// Verify that caller can perform actions in behalf of vm
// owner acumulate all Controlled Entities together.
// parse the array of resource types and in case of map
// check access on key or value or both as specified in @acl
// implement external dao for classes that need findByName
// for maps, specify access to be checkd on key or value.
// Find the controlled entity DBid by uuid
if (parameterAnnotation.entityType() != null && parameterAnnotation.entityType().length > 0
&& parameterAnnotation.entityType()[0].getAnnotation(EntityReference.class) != null) {
final Class<?>[] entityList = parameterAnnotation.entityType()[0].getAnnotation(EntityReference.class).value();
// Check if the parameter type is a single
// Id or list of id's/name's
switch (fieldType) {
case LIST:
final CommandType listType = parameterAnnotation.collectionType();
switch (listType) {
case LONG:
case UUID:
final List<Long> listParam = (List<Long>) field.get(cmd);
for (final Long entityId : listParam) {
for (final Class entity : entityList) {
final Object entityObj = _entityMgr.findById(entity, entityId);
if(entityObj != null){
entitiesToAccess.put(entityObj, checkAccess.accessType());
break;
}
}
}
break;
/*
* case STRING: List<String> listParam = new
* ArrayList<String>(); listParam =
* (List)field.get(cmd); for(String entityName:
* listParam){ ControlledEntity entityObj =
* (ControlledEntity )daoClassInstance(entityId);
* entitiesToAccess.add(entityObj); } break;
*/
default:
break;
}
break;
case LONG:
case UUID:
for (final Class entity : entityList) {
final Object entityObj = _entityMgr.findById(entity, (Long) field.get(cmd));
if(entityObj != null){
entitiesToAccess.put(entityObj, checkAccess.accessType());
break;
}
}
break;
default:
break;
}
}
}
} catch (final IllegalArgumentException e) {
s_logger.error("Error initializing command " + cmd.getCommandName() + ", field " + field.getName() + " is not accessible.");
throw new CloudRuntimeException("Internal error initializing parameters for command " + cmd.getCommandName() + " [field " + field.getName() +
" is not accessible]");
} catch (final IllegalAccessException e) {
s_logger.error("Error initializing command " + cmd.getCommandName() + ", field " + field.getName() + " is not accessible.");
throw new CloudRuntimeException("Internal error initializing parameters for command " + cmd.getCommandName() + " [field " + field.getName() +
" is not accessible]");
}
}
doAccessChecks(cmd, entitiesToAccess);
}
private void doAccessChecks(BaseCmd cmd, Map<Object, AccessType> entitiesToAccess) {
Account caller = CallContext.current().getCallingAccount();
Account owner = _accountMgr.getActiveAccountById(cmd.getEntityOwnerId());
if (cmd instanceof BaseAsyncCreateCmd) {
// check that caller can access the owner account.
_accountMgr.checkAccess(caller, null, true, owner);
}
if (!entitiesToAccess.isEmpty()) {
// check that caller can access the owner account.
_accountMgr.checkAccess(caller, null, true, owner);
for (Object entity : entitiesToAccess.keySet()) {
if (entity instanceof ControlledEntity) {
_accountMgr.checkAccess(caller, entitiesToAccess.get(entity), true, (ControlledEntity) entity);
} else if (entity instanceof InfrastructureEntity) {
// FIXME: Move this code in adapter, remove code from
// Account manager
}
}
}
}
@SuppressWarnings({"unchecked", "rawtypes"})
private void setFieldValue(final Field field, final BaseCmd cmdObj, final Object paramObj, final Parameter annotation) throws IllegalArgumentException, ParseException {
try {
field.setAccessible(true);
final CommandType fieldType = annotation.type();
switch (fieldType) {
case BOOLEAN:
field.set(cmdObj, Boolean.valueOf(paramObj.toString()));
break;
case DATE:
// This piece of code is for maintaining backward compatibility
// and support both the date formats(Bug 9724)
// Do the date messaging for ListEventsCmd only
if (cmdObj instanceof ListEventsCmd || cmdObj instanceof DeleteEventsCmd || cmdObj instanceof ArchiveEventsCmd ||
cmdObj instanceof ArchiveAlertsCmd || cmdObj instanceof DeleteAlertsCmd) {
final boolean isObjInNewDateFormat = isObjInNewDateFormat(paramObj.toString());
if (isObjInNewDateFormat) {
final DateFormat newFormat = BaseCmd.NEW_INPUT_FORMAT;
synchronized (newFormat) {
field.set(cmdObj, newFormat.parse(paramObj.toString()));
}
} else {
final DateFormat format = BaseCmd.INPUT_FORMAT;
synchronized (format) {
Date date = format.parse(paramObj.toString());
if (field.getName().equals("startDate")) {
date = messageDate(date, 0, 0, 0);
} else if (field.getName().equals("endDate")) {
date = messageDate(date, 23, 59, 59);
}
field.set(cmdObj, date);
}
}
} else {
final DateFormat format = BaseCmd.INPUT_FORMAT;
synchronized (format) {
format.setLenient(false);
field.set(cmdObj, format.parse(paramObj.toString()));
}
}
break;
case FLOAT:
// Assuming that the parameters have been checked for required before now,
// we ignore blank or null values and defer to the command to set a default
// value for optional parameters ...
if (paramObj != null && isNotBlank(paramObj.toString())) {
field.set(cmdObj, Float.valueOf(paramObj.toString()));
}
break;
case INTEGER:
// Assuming that the parameters have been checked for required before now,
// we ignore blank or null values and defer to the command to set a default
// value for optional parameters ...
if (paramObj != null && isNotBlank(paramObj.toString())) {
field.set(cmdObj, Integer.valueOf(paramObj.toString()));
}
break;
case LIST:
final List listParam = new ArrayList();
final StringTokenizer st = new StringTokenizer(paramObj.toString(), ",");
while (st.hasMoreTokens()) {
final String token = st.nextToken();
final CommandType listType = annotation.collectionType();
switch (listType) {
case INTEGER:
listParam.add(Integer.valueOf(token));
break;
case UUID:
if (token.isEmpty())
break;
final Long internalId = translateUuidToInternalId(token, annotation);
listParam.add(internalId);
break;
case LONG: {
listParam.add(Long.valueOf(token));
}
break;
case SHORT:
listParam.add(Short.valueOf(token));
case STRING:
listParam.add(token);
break;
}
}
field.set(cmdObj, listParam);
break;
case UUID:
if (paramObj.toString().isEmpty())
break;
final Long internalId = translateUuidToInternalId(paramObj.toString(), annotation);
field.set(cmdObj, internalId);
break;
case LONG:
field.set(cmdObj, Long.valueOf(paramObj.toString()));
break;
case SHORT:
field.set(cmdObj, Short.valueOf(paramObj.toString()));
break;
case STRING:
if ((paramObj != null) && paramObj.toString().length() > annotation.length()) {
s_logger.error("Value greater than max allowed length " + annotation.length() + " for param: " + field.getName());
throw new InvalidParameterValueException("Value greater than max allowed length " + annotation.length() + " for param: " + field.getName());
}
field.set(cmdObj, paramObj.toString());
break;
case TZDATE:
field.set(cmdObj, DateUtil.parseTZDateString(paramObj.toString()));
break;
case MAP:
default:
field.set(cmdObj, paramObj);
break;
}
} catch (final IllegalAccessException ex) {
s_logger.error("Error initializing command " + cmdObj.getCommandName() + ", field " + field.getName() + " is not accessible.");
throw new CloudRuntimeException("Internal error initializing parameters for command " + cmdObj.getCommandName() + " [field " + field.getName() +
" is not accessible]");
}
}
private boolean isObjInNewDateFormat(final String string) {
final Matcher matcher = BaseCmd.newInputDateFormat.matcher(string);
return matcher.matches();
}
private Date messageDate(final Date date, final int hourOfDay, final int minute, final int second) {
final Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(Calendar.HOUR_OF_DAY, hourOfDay);
cal.set(Calendar.MINUTE, minute);
cal.set(Calendar.SECOND, second);
return cal.getTime();
}
private Long translateUuidToInternalId(final String uuid, final Parameter annotation) {
if (uuid.equals("-1")) {
// FIXME: This is to handle a lot of hardcoded special cases where -1 is sent
// APITODO: Find and get rid of all hardcoded params in API Cmds and service layer
return -1L;
}
Long internalId = null;
// If annotation's empty, the cmd existed before 3.x try conversion to long
final boolean isPre3x = annotation.since().isEmpty();
// Match against Java's UUID regex to check if input is uuid string
final boolean isUuid = uuid.matches("^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$");
// Enforce that it's uuid for newly added apis from version 3.x
if (!isPre3x && !isUuid)
return null;
// There may be multiple entities defined on the @EntityReference of a Response.class
// UUID CommandType would expect only one entityType, so use the first entityType
final Class<?>[] entities = annotation.entityType()[0].getAnnotation(EntityReference.class).value();
// Allow both uuid and internal id for pre3x apis
if (isPre3x && !isUuid) {
try {
internalId = Long.parseLong(uuid);
} catch (final NumberFormatException e) {
internalId = null;
}
if (internalId != null){
// Populate CallContext for each of the entity.
for (final Class<?> entity : entities) {
CallContext.current().putContextParameter(entity.getName(), internalId);
}
return internalId;
}
}
// Go through each entity which is an interface to a VO class and get a VO object
// Try to getId() for the object using reflection, break on first non-null value
for (final Class<?> entity : entities) {
// For backward compatibility, we search within removed entities and let service layer deal
// with removed ones, return empty response or error
final Object objVO = _entityMgr.findByUuidIncludingRemoved(entity, uuid);
if (objVO == null) {
continue;
}
// Invoke the getId method, get the internal long ID
// If that fails hide exceptions as the uuid may not exist s
try {
internalId = ((InternalIdentity)objVO).getId();
} catch (final IllegalArgumentException e) {
} catch (final NullPointerException e) {
}
// Return on first non-null Id for the uuid entity
if (internalId != null){
CallContext.current().putContextParameter(entity.getName(), uuid);
break;
}
}
if (internalId == null) {
if (s_logger.isDebugEnabled())
s_logger.debug("Object entity uuid = " + uuid + " does not exist in the database.");
throw new InvalidParameterValueException("Invalid parameter " + annotation.name() + " value=" + uuid +
" due to incorrect long value format, or entity does not exist or due to incorrect parameter annotation for the field in api cmd class.");
}
return internalId;
}
}