/*
GNU GENERAL LICENSE
Copyright (C) 2006 The Lobo Project. Copyright (C) 2014 - 2017 Lobo Evolution
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
verion 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General License for more details.
You should have received a copy of the GNU General Public
along with this program. If not, see <http://www.gnu.org/licenses/>.
Contact info: lobochief@users.sourceforge.net; ivan.difrancesco@yahoo.it
*/
/*
* Created on Oct 8, 2005
*/
package org.lobobrowser.html.domimpl;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URI;
import java.net.URL;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.MissingResourceException;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.lobobrowser.html.HtmlAttributeProperties;
import org.lobobrowser.html.HtmlProperties;
import org.lobobrowser.html.js.Executor;
import org.lobobrowser.http.HttpRequest;
import org.lobobrowser.http.Method;
import org.lobobrowser.http.UserAgentContext;
import org.lobobrowser.w3c.html.HTMLScriptElement;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.EcmaError;
import org.mozilla.javascript.EvaluatorException;
import org.mozilla.javascript.Scriptable;
import org.w3c.dom.Document;
import org.w3c.dom.UserDataHandler;
/**
* The Class HTMLScriptElementImpl.
*/
public class HTMLScriptElementImpl extends HTMLElementImpl implements
HTMLScriptElement {
/** The Constant logger. */
private static final Logger logger = LogManager
.getLogger(HTMLScriptElementImpl.class.getName());
/** The Constant loggableInfo. */
private static final boolean loggableInfo = logger.isEnabled(Level.INFO);
/**
* Instantiates a new HTML script element impl.
*/
public HTMLScriptElementImpl() {
super(HtmlProperties.SCRIPT, true);
}
/**
* Instantiates a new HTML script element impl.
*
* @param name
* the name
*/
public HTMLScriptElementImpl(String name) {
super(name, true);
}
/** The text. */
private String text;
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#getText()
*/
@Override
public String getText() {
String t = this.text;
if (t == null) {
return this.getRawInnerText(true);
} else {
return t;
}
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#setText(java.lang.String)
*/
@Override
public void setText(String text) {
this.text = text;
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#getHtmlFor()
*/
@Override
public String getHtmlFor() {
return this.getAttribute(HtmlAttributeProperties.HTMLFOR);
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#setHtmlFor(java.lang.String)
*/
@Override
public void setHtmlFor(String htmlFor) {
this.setAttribute(HtmlAttributeProperties.HTMLFOR, htmlFor);
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#getEvent()
*/
@Override
public String getEvent() {
return this.getAttribute(HtmlAttributeProperties.EVENT);
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#setEvent(java.lang.String)
*/
@Override
public void setEvent(String event) {
this.setAttribute(HtmlAttributeProperties.EVENT, event);
}
/** The defer. */
private boolean defer;
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#getDefer()
*/
@Override
public boolean getDefer() {
return this.defer;
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#setDefer(boolean)
*/
@Override
public void setDefer(boolean defer) {
this.defer = defer;
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#getSrc()
*/
@Override
public String getSrc() {
return this.getAttribute(HtmlAttributeProperties.SRC);
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#setSrc(java.lang.String)
*/
@Override
public void setSrc(String src) {
this.setAttribute(HtmlAttributeProperties.SRC, src);
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#getType()
*/
@Override
public String getType() {
return this.getAttribute(HtmlAttributeProperties.TYPE);
}
/*
* (non-Javadoc)
* @see org.lobobrowser.w3c.html.HTMLScriptElement#setType(java.lang.String)
*/
@Override
public void setType(String type) {
this.setAttribute(HtmlAttributeProperties.TYPE, type);
}
/*
* (non-Javadoc)
* @see org.lobobrowser.html.domimpl.DOMNodeImpl#setUserData(java.lang.String,
* java.lang.Object, org.w3c.dom.UserDataHandler)
*/
@Override
public Object setUserData(String key, Object data, UserDataHandler handler) {
if (org.lobobrowser.html.parser.HtmlParser.MODIFYING_KEY.equals(key)
&& (data != Boolean.TRUE)) {
this.processScript();
}
return super.setUserData(key, data, handler);
}
/**
* Process script.
*/
protected final void processScript() {
UserAgentContext bcontext = this.getUserAgentContext();
if (bcontext != null && bcontext.isScriptingEnabled()) {
String text;
final String scriptURI;
int baseLineNumber;
String src = this.getSrc();
Document doc = this.document;
if (doc instanceof HTMLDocumentImpl) {
boolean liflag = loggableInfo;
if (src == null) {
text = this.getText();
scriptURI = doc.getBaseURI();
baseLineNumber = 1; // TODO: Line number of inner text??
} else {
this.informExternalScriptLoading();
URL scriptURL = ((HTMLDocumentImpl) doc).getFullURL(src);
scriptURI = scriptURL == null ? src : scriptURL
.toExternalForm();
long time1 = liflag ? System.currentTimeMillis() : 0;
try {
final HttpRequest request = bcontext
.createHttpRequest();
// Perform a synchronous request
SecurityManager sm = System.getSecurityManager();
if (sm == null) {
try {
request.open(Method.GET, getFullURL(scriptURI), false);
request.send();
} catch (IOException thrown) {
logger.error("processScript()",
thrown);
}
} else {
AccessController
.doPrivileged(new PrivilegedAction<Object>() {
@Override
public Object run() {
// Code might have restrictions on
// accessing
// items from elsewhere.
try {
request.open(Method.GET, getFullURL(scriptURI), false);
request.send();
} catch (IOException thrown) {
logger.error(
"processScript()",
thrown);
}
return null;
}
});
}
int status = request.getStatus();
if ((status != 200) && (status != 0)) {
text = httpURLConnection(scriptURI);
} else {
text = request.getResponseText();
}
} finally {
if (liflag) {
long time2 = System.currentTimeMillis();
logger.info("processScript(): Loaded external Javascript from URI=["
+ scriptURI
+ "] in "
+ (time2 - time1)
+ " ms.");
}
}
baseLineNumber = 1;
}
Context ctx = Executor.createContext(this.getDocumentURL(),
bcontext);
try {
Scriptable scope = (Scriptable) doc
.getUserData(Executor.SCOPE_KEY);
if (scope != null) {
long time1 = liflag ? System.currentTimeMillis() : 0;
if (text != null) {
ctx.evaluateString(scope, text, scriptURI,
baseLineNumber, null);
if (liflag) {
long time2 = System.currentTimeMillis();
logger.info("addNotify(): Evaluated (or attempted to evaluate) Javascript in "
+ (time2 - time1) + " ms.");
}
} else {
logger.error("No Script at uri " + scriptURI);
}
} else {
logger.error("No Scope");
}
} catch (EcmaError ecmaError) {
logger.error(
"Javascript error at " + ecmaError.sourceName()
+ ":" + ecmaError.columnNumber() + ": "
+ ecmaError.getMessage());
} catch (EvaluatorException e){
logger.error(e.getMessage());
} catch (MissingResourceException err) {
logger.error("Missing Resource");
} catch (Exception err) {
logger.error("scriptURI: " + scriptURI);
logger.error(
"Unable to evaluate Javascript code", err);
} finally {
Context.exit();
}
}
} else {
logger.error("No user agent context");
}
}
/**
* Http url connection.
*
* @param url the url
* @return the string
*/
private static String httpURLConnection(String srtUrl) {
StringBuffer response = new StringBuffer();
int responseCode = -1;
try {
URL url = new URL(srtUrl);
URI uri = new URI(url.getProtocol(), url.getUserInfo(), url.getHost(), url.getPort(), url.getPath(), url.getQuery(), url.getRef());
URL obj = uri.toURL();
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
con.setRequestProperty("User-Agent", UserAgentContext.DEFAULT_USER_AGENT);
con.setRequestMethod("GET");
responseCode = con.getResponseCode();
BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
} catch (Exception e) {
logger.warn("Unable to parse script. URI=[" + srtUrl + "]. Response status was " + responseCode + ".");
return "";
}
return response.toString();
}
/*
* (non-Javadoc)
* @see org.lobobrowser.html.domimpl.DOMNodeImpl#appendInnerTextImpl(java.lang.
* StringBuffer)
*/
@Override
protected void appendInnerTextImpl(StringBuffer buffer) {
// nop
}
@Override
public boolean getAsync() {
// TODO Auto-generated method stub
return false;
}
@Override
public void setAsync(boolean async) {
// TODO Auto-generated method stub
}
}