/*
* 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 org.apache.myfaces.tobago.validator;
import org.apache.commons.fileupload.FileItem;
import org.apache.myfaces.tobago.internal.component.AbstractUIFile;
import org.apache.myfaces.tobago.internal.util.ContentType;
import org.apache.myfaces.tobago.util.MessageUtils;
import javax.faces.application.FacesMessage;
import javax.faces.component.StateHolder;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;
import java.util.Arrays;
/**
* <p><strong>FileItemValidator</strong> is a {@link Validator} that checks
* the FileItem in the value of the associated component.
*/
@org.apache.myfaces.tobago.apt.annotation.Validator(id = FileItemValidator.VALIDATOR_ID)
public class FileItemValidator implements Validator, StateHolder {
public static final String VALIDATOR_ID = "org.apache.myfaces.tobago.FileItem";
public static final String SIZE_LIMIT_MESSAGE_ID = "org.apache.myfaces.tobago.FileItemValidator.SIZE_LIMIT";
public static final String CONTENT_TYPE_MESSAGE_ID = "org.apache.myfaces.tobago.FileItemValidator.CONTENT_TYPE";
private Integer maxSize = null;
private String[] contentType;
private boolean transientValue;
/**
* No-arg constructor used during restoreState
*/
public FileItemValidator() {
}
public void validate(FacesContext facesContext, UIComponent component, Object value) throws ValidatorException {
if (value != null && component instanceof AbstractUIFile) {
FileItem file = (FileItem) value;
if (maxSize != null && file.getSize() > maxSize) {
FacesMessage facesMessage = MessageUtils.getMessage(
facesContext, facesContext.getViewRoot().getLocale(), FacesMessage.SEVERITY_ERROR,
SIZE_LIMIT_MESSAGE_ID, maxSize, component.getId());
throw new ValidatorException(facesMessage);
}
// Check only a valid file
if (file.getSize() > 0 && contentType != null && contentType.length > 0) {
boolean found = false;
for (String contentTypeStr : contentType) {
if (ContentType.valueOf(contentTypeStr).match(ContentType.valueOf(file.getContentType()))) {
found = true;
break;
}
}
if (!found) {
String message;
if (contentType.length == 1) {
message = contentType[0];
} else {
message = Arrays.toString(contentType);
}
FacesMessage facesMessage = MessageUtils.getMessage(
facesContext, facesContext.getViewRoot().getLocale(), FacesMessage.SEVERITY_ERROR,
CONTENT_TYPE_MESSAGE_ID, message, component.getId());
throw new ValidatorException(facesMessage);
}
}
}
}
public int getMaxSize() {
return maxSize;
}
public void setMaxSize(int maxSize) {
if (maxSize > 0) {
this.maxSize = maxSize;
}
}
public String[] getContentType() {
return contentType;
}
public void setContentType(String[] contentType) {
this.contentType = contentType;
}
public Object saveState(FacesContext context) {
Object[] values = new Object[2];
values[0] = maxSize;
values[1] = contentType;
return values;
}
public void restoreState(FacesContext context, Object state) {
Object[] values = (Object[]) state;
maxSize = (Integer) values[0];
contentType = (String[]) values[1];
}
public boolean isTransient() {
return transientValue;
}
public void setTransient(boolean newTransientValue) {
this.transientValue = newTransientValue;
}
}