// Copyright (c) 2003-2014, Jodd Team (jodd.org). All Rights Reserved.
package jodd.madvoc.injector;
import jodd.madvoc.ActionRequest;
import jodd.madvoc.MadvocException;
import jodd.madvoc.ScopeData;
import jodd.madvoc.ScopeType;
import jodd.madvoc.component.MadvocConfig;
import jodd.madvoc.component.ScopeDataResolver;
import jodd.madvoc.result.MoveResult;
import jodd.servlet.upload.MultipartRequestWrapper;
import jodd.upload.FileUpload;
import jodd.servlet.ServletUtil;
import jodd.util.StringPool;
import jodd.util.StringUtil;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Enumeration;
/**
* Request scope injector. Performs {@link MoveResult moving} as well.
* Request injector should be independent and therefore more then one
* instance can be used in the Madvoc application. That's why
* configuration is being cloned on injector creation.
*/
public class RequestScopeInjector extends BaseScopeInjector
implements Injector, Outjector {
public RequestScopeInjector(MadvocConfig madvocConfig, ScopeDataResolver scopeDataResolver) {
super(ScopeType.REQUEST, madvocConfig, scopeDataResolver);
this.encoding = madvocConfig.getEncoding();
this.config = madvocConfig.getRequestScopeInjectorConfig().clone();
this.attributeMoveId = madvocConfig.getAttributeMoveId();
}
// ---------------------------------------------------------------- configuration
protected final String encoding;
protected final Config config;
protected final String attributeMoveId;
/**
* Returns request scope configuration.
*/
public Config getConfig() {
return config;
}
/**
* Request scope configuration.
*/
public static class Config implements Cloneable {
protected boolean ignoreEmptyRequestParams;
protected boolean treatEmptyParamsAsNull;
protected boolean injectAttributes = true;
protected boolean injectParameters = true;
protected boolean trimParams;
protected boolean encodeGetParams;
protected boolean ignoreInvalidUploadFiles = true;
public boolean isIgnoreEmptyRequestParams() {
return ignoreEmptyRequestParams;
}
/**
* Specifies if empty request parameters will be totally ignored as they were not sent at all.
*/
public void setIgnoreEmptyRequestParams(boolean ignoreEmptyRequestParams) {
this.ignoreEmptyRequestParams = ignoreEmptyRequestParams;
}
public boolean isTreatEmptyParamsAsNull() {
return treatEmptyParamsAsNull;
}
/**
* Specifies if empty parameters will be injected as <code>null</code> value.
*/
public void setTreatEmptyParamsAsNull(boolean treatEmptyParamsAsNull) {
this.treatEmptyParamsAsNull = treatEmptyParamsAsNull;
}
public boolean isInjectAttributes() {
return injectAttributes;
}
/**
* Specifies if attributes will be injected.
*/
public void setInjectAttributes(boolean injectAttributes) {
this.injectAttributes = injectAttributes;
}
public boolean isInjectParameters() {
return injectParameters;
}
/**
* Specifies if parameters will be injected.
*/
public void setInjectParameters(boolean injectParameters) {
this.injectParameters = injectParameters;
}
public boolean isTrimParams() {
return trimParams;
}
/**
* Specifies if parameters will be trimmed before injection.
*/
public void setTrimParams(boolean trimParams) {
this.trimParams = trimParams;
}
public boolean isEncodeGetParams() {
return encodeGetParams;
}
/**
* Specifies if GET parameters should be encoded. Alternatively, this can be set in container as well.
* Setting URIEncoding="UTF-8" in Tomcat's connector settings within the server.xml
* file communicates the character-encoding choice to the web server,
* and the Tomcat server correctly reads the URL GET parameters correctly.
* On Sun Java System Application Server 8.1, "<parameter-encoding default-charset="UTF-8"/>"
* can be included in the sun-web.xml file.
* See more: http://java.sun.com/developer/technicalArticles/Intl/HTTPCharset/
*/
public void setEncodeGetParams(boolean encodeGetParams) {
this.encodeGetParams = encodeGetParams;
}
/**
* Returns <code>true</code> if invalid and non-existing upload files are ignored.
*/
public boolean isIgnoreInvalidUploadFiles() {
return ignoreInvalidUploadFiles;
}
/**
* Specifies if invalid and non-existing upload files should be <code>null</code>.
*/
public void setIgnoreInvalidUploadFiles(boolean ignoreInvalidUploadFiles) {
this.ignoreInvalidUploadFiles = ignoreInvalidUploadFiles;
}
@Override
public Config clone() {
try {
return (Config) super.clone();
} catch (CloneNotSupportedException cnsex) {
throw new MadvocException(cnsex);
}
}
}
// ---------------------------------------------------------------- inject
/**
* Inject request attributes.
*/
protected void injectAttributes(Object[] targets, ScopeData.In[][] injectData, HttpServletRequest servletRequest) {
Enumeration attributeNames = servletRequest.getAttributeNames();
while (attributeNames.hasMoreElements()) {
String attrName = (String) attributeNames.nextElement();
for (int i = 0; i < targets.length; i++) {
Object target = targets[i];
ScopeData.In[] scopes = injectData[i];
if (scopes == null) {
continue;
}
for (ScopeData.In in : scopes) {
String name = getMatchedPropertyName(in, attrName);
if (name != null) {
Object attrValue = servletRequest.getAttribute(attrName);
setTargetProperty(target, name, attrValue);
}
}
}
}
}
/**
* Inject request parameters. Parameters with the same name as one of request attributes
* are simply ignored.
*/
protected void injectParameters(Object[] targets, ScopeData.In[][] injectData, HttpServletRequest servletRequest) {
boolean encode = config.encodeGetParams && servletRequest.getMethod().equals("GET");
Enumeration paramNames = servletRequest.getParameterNames();
while (paramNames.hasMoreElements()) {
String paramName = (String) paramNames.nextElement();
if (servletRequest.getAttribute(paramName) != null) {
continue;
}
for (int i = 0; i < targets.length; i++) {
Object target = targets[i];
ScopeData.In[] scopes = injectData[i];
if (scopes == null) {
continue;
}
for (ScopeData.In in : scopes) {
String name = getMatchedPropertyName(in, paramName);
if (name != null) {
String[] paramValues = servletRequest.getParameterValues(paramName);
paramValues = ServletUtil.prepareParameters(
paramValues,
config.trimParams,
config.treatEmptyParamsAsNull,
config.ignoreEmptyRequestParams);
if (paramValues == null) {
continue;
}
if (encode) {
for (int j = 0; j < paramValues.length; j++) {
String p = paramValues[j];
if (p != null) {
paramValues[j] = StringUtil.convertCharset(p, StringPool.ISO_8859_1, encoding);
}
}
}
Object value = (paramValues.length != 1 ? paramValues : paramValues[0]);
setTargetProperty(target, name, value);
}
}
}
}
}
/**
* Inject uploaded files from multipart request parameters.
*/
protected void injectUploadedFiles(Object[] targets, ScopeData.In[][] injectData, HttpServletRequest servletRequest) {
if ((servletRequest instanceof MultipartRequestWrapper) == false) {
return;
}
MultipartRequestWrapper multipartRequest = (MultipartRequestWrapper) servletRequest;
if (multipartRequest.isMultipart() == false) {
return;
}
Enumeration paramNames = multipartRequest.getFileParameterNames();
while (paramNames.hasMoreElements()) {
String paramName = (String) paramNames.nextElement();
if (servletRequest.getAttribute(paramName) != null) {
continue;
}
for (int i = 0; i < targets.length; i++) {
Object target = targets[i];
ScopeData.In[] scopes = injectData[i];
if (scopes == null) {
continue;
}
for (ScopeData.In in : scopes) {
String name = getMatchedPropertyName(in, paramName);
if (name != null) {
FileUpload[] paramValues = multipartRequest.getFiles(paramName);
if (config.ignoreInvalidUploadFiles) {
for (int j = 0; j < paramValues.length; j++) {
FileUpload paramValue = paramValues[j];
if ((paramValue.isValid() == false) || (paramValue.isUploaded() == false)) {
paramValues[j] = null;
}
}
}
Object value = (paramValues.length == 1 ? paramValues[0] : paramValues);
setTargetProperty(target, name, value);
}
}
}
}
}
/**
* Outjects all request data from move result source, if exist.
*/
protected void outjectMoveSource(ActionRequest actionRequest) {
HttpServletRequest servletRequest = actionRequest.getHttpServletRequest();
String moveId = servletRequest.getParameter(attributeMoveId);
if (moveId != null) {
HttpSession session = servletRequest.getSession();
ActionRequest sourceRequest = (ActionRequest) session.getAttribute(moveId);
session.removeAttribute(moveId);
if (sourceRequest != null) {
outjectAfterMove(sourceRequest);
}
}
}
/**
* Prepares stuff before {@link #inject(jodd.madvoc.ActionRequest)} injection}.
* Preparation should be invoked only once per request. It includes the following:
* <ul>
* <li>copying parameters to attributes</li>
* <li>handling of move results by outjection the move source.</li>
* </ul>
*/
public void prepare(ActionRequest actionRequest) {
outjectMoveSource(actionRequest);
}
public void inject(ActionRequest actionRequest) {
Object[] targets = actionRequest.getTargets();
ScopeData.In[][] injectData = lookupInData(actionRequest);
if (injectData == null) {
return;
}
HttpServletRequest servletRequest = actionRequest.getHttpServletRequest();
if (config.injectAttributes == true) {
injectAttributes(targets, injectData, servletRequest);
}
if (config.injectParameters == true) {
injectParameters(targets, injectData, servletRequest);
injectUploadedFiles(targets, injectData, servletRequest);
}
}
// ---------------------------------------------------------------- outject
public void outject(ActionRequest actionRequest) {
ScopeData.Out[][] outjectData = lookupOutData(actionRequest);
if (outjectData == null) {
return;
}
Object[] targets = actionRequest.getTargets();
HttpServletRequest servletRequest = actionRequest.getHttpServletRequest();
for (int i = 0; i < targets.length; i++) {
Object target = targets[i];
ScopeData.Out[] scopes = outjectData[i];
if (scopes == null) {
continue;
}
for (ScopeData.Out out : scopes) {
Object value = getTargetProperty(target, out);
servletRequest.setAttribute(out.name, value);
}
}
}
protected void outjectAfterMove(ActionRequest sourceRequest) {
ScopeData.Out[][] outjectData = lookupOutData(sourceRequest);
if (outjectData == null) {
return;
}
Object[] targets = sourceRequest.getTargets();
HttpServletRequest servletRequest = sourceRequest.getHttpServletRequest();
for (int i = 0; i < targets.length; i++) {
Object target = targets[i];
ScopeData.Out[] scopes = outjectData[i];
if (scopes == null) {
continue;
}
for (ScopeData.Out out : scopes) {
Object value = getTargetProperty(target, out);
servletRequest.setAttribute(out.name, value);
}
}
}
}