/*
* Returns the value of the uri element of the given TLD, or null if the
* given TLD does not contain any such element.
*/
private String getUriFromTld(String resourcePath, InputStream in) throws JasperException {
// Parse the tag library descriptor at the specified resource path
TreeNode tld = new ParserUtils().parseXMLDocument(resourcePath, in);
TreeNode uri = tld.findChild("uri");
if (uri != null) {
String body = uri.getBody();
if (body != null) return body;
}
return null;
}
/*
* Populates taglib map described in web.xml.
*
* This is not kept in sync with o.a.c.startup.TldConfig as the Jasper only
* needs the URI to TLD mappings from scan web.xml whereas TldConfig needs
* to scan the actual TLD files.
*/
private void tldScanWebXml() throws Exception {
WebXml webXml = null;
try {
webXml = new WebXml(ctxt);
if (webXml.getInputSource() == null) {
return;
}
boolean validate =
Boolean.parseBoolean(ctxt.getInitParameter(Constants.XML_VALIDATION_TLD_INIT_PARAM));
String blockExternalString = ctxt.getInitParameter(Constants.XML_BLOCK_EXTERNAL_INIT_PARAM);
boolean blockExternal;
if (blockExternalString == null) {
blockExternal = Constants.IS_SECURITY_ENABLED;
} else {
blockExternal = Boolean.parseBoolean(blockExternalString);
}
// Parse the web application deployment descriptor
ParserUtils pu = new ParserUtils(validate, blockExternal);
TreeNode webtld = null;
webtld = pu.parseXMLDocument(webXml.getSystemId(), webXml.getInputSource());
// Allow taglib to be an element of the root or jsp-config (JSP2.0)
TreeNode jspConfig = webtld.findChild("jsp-config");
if (jspConfig != null) {
webtld = jspConfig;
}
Iterator<TreeNode> taglibs = webtld.findChildren("taglib");
while (taglibs.hasNext()) {
// Parse the next <taglib> element
TreeNode taglib = taglibs.next();
String tagUri = null;
String tagLoc = null;
TreeNode child = taglib.findChild("taglib-uri");
if (child != null) tagUri = child.getBody();
child = taglib.findChild("taglib-location");
if (child != null) tagLoc = child.getBody();
// Save this location if appropriate
if (tagLoc == null) continue;
if (uriType(tagLoc) == NOROOT_REL_URI) tagLoc = "/WEB-INF/" + tagLoc;
TldLocation location;
if (tagLoc.endsWith(JAR_EXT)) {
location = new TldLocation("META-INF/taglib.tld", ctxt.getResource(tagLoc).toString());
} else {
location = new TldLocation(tagLoc);
}
mappings.put(tagUri, location);
}
} finally {
if (webXml != null) {
webXml.close();
}
}
}
private void init(ErrorDispatcher err) throws JasperException {
if (initialized) return;
InputStream is = ctxt.getResourceAsStream(TAG_PLUGINS_XML);
if (is == null) return;
TreeNode root = (new ParserUtils()).parseXMLDocument(TAG_PLUGINS_XML, is);
if (root == null) {
return;
}
if (!TAG_PLUGINS_ROOT_ELEM.equals(root.getName())) {
err.jspError("jsp.error.plugin.wrongRootElement", TAG_PLUGINS_XML, TAG_PLUGINS_ROOT_ELEM);
}
tagPlugins = new HashMap();
Iterator pluginList = root.findChildren("tag-plugin");
while (pluginList.hasNext()) {
TreeNode pluginNode = (TreeNode) pluginList.next();
TreeNode tagClassNode = pluginNode.findChild("tag-class");
if (tagClassNode == null) {
// Error
return;
}
String tagClass = tagClassNode.getBody().trim();
TreeNode pluginClassNode = pluginNode.findChild("plugin-class");
if (pluginClassNode == null) {
// Error
return;
}
String pluginClassStr = pluginClassNode.getBody();
TagPlugin tagPlugin = null;
try {
Class pluginClass = Class.forName(pluginClassStr);
tagPlugin = (TagPlugin) pluginClass.newInstance();
} catch (Exception e) {
throw new JasperException(e);
}
if (tagPlugin == null) {
return;
}
tagPlugins.put(tagClass, tagPlugin);
}
initialized = true;
}
/*
* Parses the tag file directives of the given TagFile and turns them into a
* TagInfo.
*
* @param elem The <tag-file> element in the TLD @param uri The location of
* the TLD, in case the tag file is specified relative to it @param jarFile
* The JAR file, in case the tag file is packaged in a JAR
*
* @return TagInfo correspoding to tag file directives
*/
private TagFileInfo createTagFileInfo(TreeNode elem, String uri, URL jarFileUrl)
throws JasperException {
String name = null;
String path = null;
Iterator list = elem.findChildren();
while (list.hasNext()) {
TreeNode child = (TreeNode) list.next();
String tname = child.getName();
if ("name".equals(tname)) {
name = child.getBody();
} else if ("path".equals(tname)) {
path = child.getBody();
} else if ("example".equals(tname)) {
// Ignore <example> element: Bugzilla 33538
} else if ("tag-extension".equals(tname)) {
// Ignore <tag-extension> element: Bugzilla 33538
} else if ("icon".equals(tname)
|| "display-name".equals(tname)
|| "description".equals(tname)) {
// Ignore these elements: Bugzilla 38015
} else {
if (log.isWarnEnabled()) {
log.warn(Localizer.getMessage("jsp.warning.unknown.element.in.tagfile", tname));
}
}
}
if (path.startsWith("/META-INF/tags")) {
// Tag file packaged in JAR
// See https://issues.apache.org/bugzilla/show_bug.cgi?id=46471
// This needs to be removed once all the broken code that depends on
// it has been removed
ctxt.setTagFileJarUrl(path, jarFileUrl);
} else if (!path.startsWith("/WEB-INF/tags")) {
err.jspError("jsp.error.tagfile.illegalPath", path);
}
TagInfo tagInfo =
TagFileProcessor.parseTagFileDirectives(parserController, name, path, jarFileUrl, this);
return new TagFileInfo(name, path, tagInfo);
}
String[] createInitParam(TreeNode elem) {
String[] initParam = new String[2];
Iterator list = elem.findChildren();
while (list.hasNext()) {
TreeNode element = (TreeNode) list.next();
String tname = element.getName();
if ("param-name".equals(tname)) {
initParam[0] = element.getBody();
} else if ("param-value".equals(tname)) {
initParam[1] = element.getBody();
} else if ("description".equals(tname)) {
// Do nothing
} else {
if (log.isWarnEnabled()) {
log.warn(Localizer.getMessage("jsp.warning.unknown.element.in.initParam", tname));
}
}
}
return initParam;
}
FunctionInfo createFunctionInfo(TreeNode elem) {
String name = null;
String klass = null;
String signature = null;
Iterator list = elem.findChildren();
while (list.hasNext()) {
TreeNode element = (TreeNode) list.next();
String tname = element.getName();
if ("name".equals(tname)) {
name = element.getBody();
} else if ("function-class".equals(tname)) {
klass = element.getBody();
} else if ("function-signature".equals(tname)) {
signature = element.getBody();
} else if ("display-name".equals(tname)
|| // Ignored elements
"small-icon".equals(tname)
|| "large-icon".equals(tname)
|| "description".equals(tname)
|| "example".equals(tname)) {
} else {
if (log.isWarnEnabled()) {
log.warn(Localizer.getMessage("jsp.warning.unknown.element.in.function", tname));
}
}
}
return new FunctionInfo(name, klass, signature);
}
/*
* Scan the TLD contents in the specified input stream and add any new URIs
* to the map.
*
* @param resourcePath Path of the resource
* @param entryName If the resource is a JAR file, the name of the entry
* in the JAR file
* @param stream The input stream for the resource
* @throws IOException
*/
private void tldScanStream(String resourcePath, String entryName, InputStream stream)
throws IOException {
try {
// Parse the tag library descriptor at the specified resource path
String uri = null;
boolean validate =
Boolean.parseBoolean(ctxt.getInitParameter(Constants.XML_VALIDATION_TLD_INIT_PARAM));
String blockExternalString = ctxt.getInitParameter(Constants.XML_BLOCK_EXTERNAL_INIT_PARAM);
boolean blockExternal;
if (blockExternalString == null) {
blockExternal = Constants.IS_SECURITY_ENABLED;
} else {
blockExternal = Boolean.parseBoolean(blockExternalString);
}
ParserUtils pu = new ParserUtils(validate, blockExternal);
TreeNode tld = pu.parseXMLDocument(resourcePath, stream);
TreeNode uriNode = tld.findChild("uri");
if (uriNode != null) {
String body = uriNode.getBody();
if (body != null) uri = body;
}
// Add implicit map entry only if its uri is not already
// present in the map
if (uri != null && mappings.get(uri) == null) {
TldLocation location;
if (entryName == null) {
location = new TldLocation(resourcePath);
} else {
location = new TldLocation(entryName, resourcePath);
}
mappings.put(uri, location);
}
} catch (JasperException e) {
// Hack - makes exception handling simpler
throw new IOException(e);
}
}
private TagLibraryValidator createValidator(TreeNode elem) throws JasperException {
String validatorClass = null;
Map initParams = new Hashtable();
Iterator list = elem.findChildren();
while (list.hasNext()) {
TreeNode element = (TreeNode) list.next();
String tname = element.getName();
if ("validator-class".equals(tname)) validatorClass = element.getBody();
else if ("init-param".equals(tname)) {
String[] initParam = createInitParam(element);
initParams.put(initParam[0], initParam[1]);
} else if ("description".equals(tname)
|| // Ignored elements
false) {
} else {
if (log.isWarnEnabled()) {
log.warn(Localizer.getMessage("jsp.warning.unknown.element.in.validator", tname));
}
}
}
TagLibraryValidator tlv = null;
if (validatorClass != null && !validatorClass.equals("")) {
try {
Class tlvClass = ctxt.getClassLoader().loadClass(validatorClass);
tlv = (TagLibraryValidator) tlvClass.newInstance();
} catch (Exception e) {
err.jspError("jsp.error.tlvclass.instantiation", validatorClass, e);
}
}
if (tlv != null) {
tlv.setInitParameters(initParams);
}
return tlv;
}
TagVariableInfo createVariable(TreeNode elem) {
String nameGiven = null;
String nameFromAttribute = null;
String className = "java.lang.String";
boolean declare = true;
int scope = VariableInfo.NESTED;
Iterator list = elem.findChildren();
while (list.hasNext()) {
TreeNode element = (TreeNode) list.next();
String tname = element.getName();
if ("name-given".equals(tname)) nameGiven = element.getBody();
else if ("name-from-attribute".equals(tname)) nameFromAttribute = element.getBody();
else if ("variable-class".equals(tname)) className = element.getBody();
else if ("declare".equals(tname)) {
String s = element.getBody();
if (s != null) declare = JspUtil.booleanValue(s);
} else if ("scope".equals(tname)) {
String s = element.getBody();
if (s != null) {
if ("NESTED".equals(s)) {
scope = VariableInfo.NESTED;
} else if ("AT_BEGIN".equals(s)) {
scope = VariableInfo.AT_BEGIN;
} else if ("AT_END".equals(s)) {
scope = VariableInfo.AT_END;
}
}
} else if ("description".equals(tname)
|| // Ignored elements
false) {
} else {
if (log.isWarnEnabled()) {
log.warn(Localizer.getMessage("jsp.warning.unknown.element.in.variable", tname));
}
}
}
return new TagVariableInfo(nameGiven, nameFromAttribute, className, declare, scope);
}
/*
* Populates taglib map described in web.xml.
*/
protected void processWebDotXml(Map tmpMappings) throws Exception {
InputStream is = null;
try {
// Acquire input stream to web application deployment descriptor
String altDDName = (String) ctx.getAttribute(Constants.ALT_DD_ATTR);
if (altDDName != null) {
try {
is = new FileInputStream(altDDName);
} catch (FileNotFoundException e) {
log.warn(Localizer.getMessage("jsp.error.internal.filenotfound", altDDName));
}
} else {
is = ctx.getResourceAsStream(WEB_XML);
if (is == null) {
log.warn(Localizer.getMessage("jsp.error.internal.filenotfound", WEB_XML));
}
}
if (is == null) {
return;
}
// Parse the web application deployment descriptor
TreeNode webtld = null;
// altDDName is the absolute path of the DD
if (altDDName != null) {
webtld = new ParserUtils().parseXMLDocument(altDDName, is);
} else {
webtld = new ParserUtils().parseXMLDocument(WEB_XML, is);
}
// Allow taglib to be an element of the root or jsp-config (JSP2.0)
TreeNode jspConfig = webtld.findChild("jsp-config");
if (jspConfig != null) {
webtld = jspConfig;
}
Iterator taglibs = webtld.findChildren("taglib");
while (taglibs.hasNext()) {
// Parse the next <taglib> element
TreeNode taglib = (TreeNode) taglibs.next();
String tagUri = null;
String tagLoc = null;
TreeNode child = taglib.findChild("taglib-uri");
if (child != null) tagUri = child.getBody();
child = taglib.findChild("taglib-location");
if (child != null) tagLoc = child.getBody();
// Save this location if appropriate
if (tagLoc == null) continue;
if (uriType(tagLoc) == NOROOT_REL_URI) tagLoc = "/WEB-INF/" + tagLoc;
String tagLoc2 = null;
if (tagLoc.endsWith(JAR_FILE_SUFFIX)) {
tagLoc = ctx.getResource(tagLoc).toString();
tagLoc2 = "META-INF/taglib.tld";
}
tmpMappings.put(tagUri, new String[] {tagLoc, tagLoc2}); // SYNC
}
} finally {
if (is != null) {
try {
is.close();
} catch (Throwable t) {
}
}
}
}
TagAttributeInfo createAttribute(TreeNode elem, String jspVersion) {
String name = null;
String type = null;
String expectedType = null;
String methodSignature = null;
boolean required = false,
rtexprvalue = false,
reqTime = false,
isFragment = false,
deferredValue = false,
deferredMethod = false;
Iterator list = elem.findChildren();
while (list.hasNext()) {
TreeNode element = (TreeNode) list.next();
String tname = element.getName();
if ("name".equals(tname)) {
name = element.getBody();
} else if ("required".equals(tname)) {
String s = element.getBody();
if (s != null) required = JspUtil.booleanValue(s);
} else if ("rtexprvalue".equals(tname)) {
String s = element.getBody();
if (s != null) rtexprvalue = JspUtil.booleanValue(s);
} else if ("type".equals(tname)) {
type = element.getBody();
if ("1.2".equals(jspVersion)
&& (type.equals("Boolean")
|| type.equals("Byte")
|| type.equals("Character")
|| type.equals("Double")
|| type.equals("Float")
|| type.equals("Integer")
|| type.equals("Long")
|| type.equals("Object")
|| type.equals("Short")
|| type.equals("String"))) {
type = "java.lang." + type;
}
} else if ("fragment".equals(tname)) {
String s = element.getBody();
if (s != null) {
isFragment = JspUtil.booleanValue(s);
}
} else if ("deferred-value".equals(tname)) {
deferredValue = true;
type = "javax.el.ValueExpression";
TreeNode child = element.findChild("type");
if (child != null) {
expectedType = child.getBody();
if (expectedType != null) {
expectedType = expectedType.trim();
}
} else {
expectedType = "java.lang.Object";
}
} else if ("deferred-method".equals(tname)) {
deferredMethod = true;
type = "javax.el.MethodExpression";
TreeNode child = element.findChild("method-signature");
if (child != null) {
methodSignature = child.getBody();
if (methodSignature != null) {
methodSignature = methodSignature.trim();
}
} else {
methodSignature = "java.lang.Object method()";
}
} else if ("description".equals(tname)
|| // Ignored elements
false) {;
} else {
if (log.isWarnEnabled()) {
log.warn(Localizer.getMessage("jsp.warning.unknown.element.in.attribute", tname));
}
}
}
if (isFragment) {
/*
* According to JSP.C-3 ("TLD Schema Element Structure - tag"),
* 'type' and 'rtexprvalue' must not be specified if 'fragment' has
* been specified (this will be enforced by validating parser).
* Also, if 'fragment' is TRUE, 'type' is fixed at
* javax.servlet.jsp.tagext.JspFragment, and 'rtexprvalue' is fixed
* at true. See also JSP.8.5.2.
*/
type = "javax.servlet.jsp.tagext.JspFragment";
rtexprvalue = true;
}
if (!rtexprvalue && type == null) {
// According to JSP spec, for static values (those determined at
// translation time) the type is fixed at java.lang.String.
type = "java.lang.String";
}
return new TagAttributeInfo(
name,
required,
type,
rtexprvalue,
isFragment,
null,
deferredValue,
deferredMethod,
expectedType,
methodSignature);
}
private TagInfo createTagInfo(TreeNode elem, String jspVersion) throws JasperException {
String tagName = null;
String tagClassName = null;
String teiClassName = null;
/*
* Default body content for JSP 1.2 tag handlers (<body-content> has
* become mandatory in JSP 2.0, because the default would be invalid for
* simple tag handlers)
*/
String bodycontent = "JSP";
String info = null;
String displayName = null;
String smallIcon = null;
String largeIcon = null;
boolean dynamicAttributes = false;
Vector attributeVector = new Vector();
Vector variableVector = new Vector();
Iterator list = elem.findChildren();
while (list.hasNext()) {
TreeNode element = (TreeNode) list.next();
String tname = element.getName();
if ("name".equals(tname)) {
tagName = element.getBody();
} else if ("tagclass".equals(tname) || "tag-class".equals(tname)) {
tagClassName = element.getBody();
} else if ("teiclass".equals(tname) || "tei-class".equals(tname)) {
teiClassName = element.getBody();
} else if ("bodycontent".equals(tname) || "body-content".equals(tname)) {
bodycontent = element.getBody();
} else if ("display-name".equals(tname)) {
displayName = element.getBody();
} else if ("small-icon".equals(tname)) {
smallIcon = element.getBody();
} else if ("large-icon".equals(tname)) {
largeIcon = element.getBody();
} else if ("icon".equals(tname)) {
TreeNode icon = element.findChild("small-icon");
if (icon != null) {
smallIcon = icon.getBody();
}
icon = element.findChild("large-icon");
if (icon != null) {
largeIcon = icon.getBody();
}
} else if ("info".equals(tname) || "description".equals(tname)) {
info = element.getBody();
} else if ("variable".equals(tname)) {
variableVector.addElement(createVariable(element));
} else if ("attribute".equals(tname)) {
attributeVector.addElement(createAttribute(element, jspVersion));
} else if ("dynamic-attributes".equals(tname)) {
dynamicAttributes = JspUtil.booleanValue(element.getBody());
} else if ("example".equals(tname)) {
// Ignored elements
} else if ("tag-extension".equals(tname)) {
// Ignored
} else {
if (log.isWarnEnabled()) {
log.warn(Localizer.getMessage("jsp.warning.unknown.element.in.tag", tname));
}
}
}
TagExtraInfo tei = null;
if (teiClassName != null && !teiClassName.equals("")) {
try {
Class teiClass = ctxt.getClassLoader().loadClass(teiClassName);
tei = (TagExtraInfo) teiClass.newInstance();
} catch (Exception e) {
err.jspError("jsp.error.teiclass.instantiation", teiClassName, e);
}
}
TagAttributeInfo[] tagAttributeInfo = new TagAttributeInfo[attributeVector.size()];
attributeVector.copyInto(tagAttributeInfo);
TagVariableInfo[] tagVariableInfos = new TagVariableInfo[variableVector.size()];
variableVector.copyInto(tagVariableInfos);
TagInfo taginfo =
new TagInfo(
tagName,
tagClassName,
bodycontent,
info,
this,
tei,
tagAttributeInfo,
displayName,
smallIcon,
largeIcon,
tagVariableInfos,
dynamicAttributes);
return taginfo;
}
/*
* @param ctxt The JSP compilation context @param uri The TLD's uri @param
* in The TLD's input stream @param jarFileUrl The JAR file containing the
* TLD, or null if the tag library is not packaged in a JAR
*/
private void parseTLD(JspCompilationContext ctxt, String uri, InputStream in, URL jarFileUrl)
throws JasperException {
Vector tagVector = new Vector();
Vector tagFileVector = new Vector();
Hashtable functionTable = new Hashtable();
// Create an iterator over the child elements of our <taglib> element
ParserUtils pu = new ParserUtils();
TreeNode tld = pu.parseXMLDocument(uri, in);
// Check to see if the <taglib> root element contains a 'version'
// attribute, which was added in JSP 2.0 to replace the <jsp-version>
// subelement
this.jspversion = tld.findAttribute("version");
// Process each child element of our <taglib> element
Iterator list = tld.findChildren();
while (list.hasNext()) {
TreeNode element = (TreeNode) list.next();
String tname = element.getName();
if ("tlibversion".equals(tname) // JSP 1.1
|| "tlib-version".equals(tname)) { // JSP 1.2
this.tlibversion = element.getBody();
} else if ("jspversion".equals(tname) || "jsp-version".equals(tname)) {
this.jspversion = element.getBody();
} else if ("shortname".equals(tname) || "short-name".equals(tname))
this.shortname = element.getBody();
else if ("uri".equals(tname)) this.urn = element.getBody();
else if ("info".equals(tname) || "description".equals(tname)) this.info = element.getBody();
else if ("validator".equals(tname)) this.tagLibraryValidator = createValidator(element);
else if ("tag".equals(tname)) tagVector.addElement(createTagInfo(element, jspversion));
else if ("tag-file".equals(tname)) {
TagFileInfo tagFileInfo = createTagFileInfo(element, uri, jarFileUrl);
tagFileVector.addElement(tagFileInfo);
} else if ("function".equals(tname)) { // JSP2.0
FunctionInfo funcInfo = createFunctionInfo(element);
String funcName = funcInfo.getName();
if (functionTable.containsKey(funcName)) {
err.jspError("jsp.error.tld.fn.duplicate.name", funcName, uri);
}
functionTable.put(funcName, funcInfo);
} else if ("display-name".equals(tname)
|| // Ignored elements
"small-icon".equals(tname)
|| "large-icon".equals(tname)
|| "listener".equals(tname)) {;
} else if ("taglib-extension".equals(tname)) {
// Recognized but ignored
} else {
if (log.isWarnEnabled()) {
log.warn(Localizer.getMessage("jsp.warning.unknown.element.in.taglib", tname));
}
}
}
if (tlibversion == null) {
err.jspError("jsp.error.tld.mandatory.element.missing", "tlib-version", uri);
}
if (jspversion == null) {
err.jspError("jsp.error.tld.mandatory.element.missing", "jsp-version", uri);
}
this.tags = new TagInfo[tagVector.size()];
tagVector.copyInto(this.tags);
this.tagFiles = new TagFileInfo[tagFileVector.size()];
tagFileVector.copyInto(this.tagFiles);
this.functions = new FunctionInfo[functionTable.size()];
int i = 0;
Enumeration enumeration = functionTable.elements();
while (enumeration.hasMoreElements()) {
this.functions[i++] = (FunctionInfo) enumeration.nextElement();
}
}