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org.apache.catalina.mapper.Mapper Maven / Gradle / Ivy
Tomcat Servlet Engine Core Classes and Standard implementations
/*
* 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.catalina.mapper;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.catalina.Context;
import org.apache.catalina.Host;
import org.apache.catalina.WebResource;
import org.apache.catalina.WebResourceRoot;
import org.apache.catalina.Wrapper;
import org.apache.tomcat.util.buf.Ascii;
import org.apache.tomcat.util.buf.CharChunk;
import org.apache.tomcat.util.buf.MessageBytes;
import org.apache.tomcat.util.res.StringManager;
/**
* Mapper, which implements the servlet API mapping rules (which are derived
* from the HTTP rules).
*
* @author Remy Maucherat
*/
public final class Mapper {
private static final org.apache.juli.logging.Log log =
org.apache.juli.logging.LogFactory.getLog(Mapper.class);
protected static final StringManager sm =
StringManager.getManager(Mapper.class.getPackage().getName());
// ----------------------------------------------------- Instance Variables
/**
* Array containing the virtual hosts definitions.
*/
protected MappedHost[] hosts = new MappedHost[0];
/**
* Default host name.
*/
protected String defaultHostName = null;
/**
* Mapping from Context object to Context version to support
* RequestDispatcher mappings.
*/
protected Map contextObjectToContextVersionMap =
new ConcurrentHashMap<>();
// --------------------------------------------------------- Public Methods
/**
* Set default host.
*
* @param defaultHostName Default host name
*/
public void setDefaultHostName(String defaultHostName) {
this.defaultHostName = defaultHostName;
}
/**
* Add a new host to the mapper.
*
* @param name Virtual host name
* @param host Host object
*/
public synchronized void addHost(String name, String[] aliases,
Host host) {
MappedHost[] newHosts = new MappedHost[hosts.length + 1];
MappedHost newHost = new MappedHost();
ContextList contextList = new ContextList();
newHost.name = name;
newHost.contextList = contextList;
newHost.object = host;
if (insertMap(hosts, newHosts, newHost)) {
hosts = newHosts;
}
for (int i = 0; i < aliases.length; i++) {
newHosts = new MappedHost[hosts.length + 1];
newHost = new MappedHost();
newHost.name = aliases[i];
newHost.contextList = contextList;
newHost.object = host;
if (insertMap(hosts, newHosts, newHost)) {
hosts = newHosts;
}
}
}
/**
* Remove a host from the mapper.
*
* @param name Virtual host name
*/
public synchronized void removeHost(String name) {
// Find and remove the old host
int pos = find(hosts, name);
if (pos < 0) {
return;
}
Host host = hosts[pos].object;
MappedHost[] newHosts = new MappedHost[hosts.length - 1];
if (removeMap(hosts, newHosts, name)) {
hosts = newHosts;
}
// Remove all aliases (they will map to the same host object)
for (int i = 0; i < newHosts.length; i++) {
if (newHosts[i].object == host) {
MappedHost[] newHosts2 = new MappedHost[hosts.length - 1];
if (removeMap(hosts, newHosts2, newHosts[i].name)) {
hosts = newHosts2;
}
}
}
}
/**
* Add an alias to an existing host.
* @param name The name of the host
* @param alias The alias to add
*/
public synchronized void addHostAlias(String name, String alias) {
int pos = find(hosts, name);
if (pos < 0) {
// Should not be adding an alias for a host that doesn't exist but
// just in case...
return;
}
MappedHost realHost = hosts[pos];
MappedHost[] newHosts = new MappedHost[hosts.length + 1];
MappedHost newHost = new MappedHost();
newHost.name = alias;
newHost.contextList = realHost.contextList;
newHost.object = realHost.object;
if (insertMap(hosts, newHosts, newHost)) {
hosts = newHosts;
}
}
/**
* Remove a host alias
* @param alias The alias to remove
*/
public synchronized void removeHostAlias(String alias) {
// Find and remove the alias
int pos = find(hosts, alias);
if (pos < 0) {
return;
}
MappedHost[] newHosts = new MappedHost[hosts.length - 1];
if (removeMap(hosts, newHosts, alias)) {
hosts = newHosts;
}
}
/**
* Add a new Context to an existing Host.
*
* @param hostName Virtual host name this context belongs to
* @param host Host object
* @param path Context path
* @param version Context version
* @param context Context object
* @param welcomeResources Welcome files defined for this context
* @param resources Static resources of the context
*/
public void addContextVersion(String hostName, Host host, String path,
String version, Context context, String[] welcomeResources,
WebResourceRoot resources) {
MappedHost[] hosts = this.hosts;
int pos = find(hosts, hostName);
if( pos <0 ) {
addHost(hostName, new String[0], host);
hosts = this.hosts;
pos = find(hosts, hostName);
}
if (pos < 0) {
log.error("No host found: " + hostName);
}
MappedHost mappedHost = hosts[pos];
if (mappedHost.name.equals(hostName)) {
int slashCount = slashCount(path);
synchronized (mappedHost) {
MappedContext[] contexts = mappedHost.contextList.contexts;
// Update nesting
if (slashCount > mappedHost.contextList.nesting) {
mappedHost.contextList.nesting = slashCount;
}
int pos2 = find(contexts, path);
if (pos2 < 0 || !path.equals(contexts[pos2].name)) {
MappedContext newContext = new MappedContext();
newContext.name = path;
MappedContext[] newContexts = new MappedContext[contexts.length + 1];
if (insertMap(contexts, newContexts, newContext)) {
mappedHost.contextList.contexts = newContexts;
}
pos2 = find(newContexts, path);
}
MappedContext mappedContext = mappedHost.contextList.contexts[pos2];
ContextVersion[] contextVersions = mappedContext.versions;
ContextVersion[] newContextVersions =
new ContextVersion[contextVersions.length + 1];
ContextVersion newContextVersion = new ContextVersion();
newContextVersion.path = path;
newContextVersion.name = version;
newContextVersion.object = context;
newContextVersion.welcomeResources = welcomeResources;
newContextVersion.resources = resources;
if (insertMap(contextVersions, newContextVersions, newContextVersion)) {
mappedContext.versions = newContextVersions;
contextObjectToContextVersionMap.put(
context, newContextVersion);
}
}
}
}
/**
* Remove a context from an existing host.
*
* @param ctxt The actual context
* @param hostName Virtual host name this context belongs to
* @param path Context path
* @param version Context version
*/
public void removeContextVersion(Context ctxt, String hostName,
String path, String version) {
contextObjectToContextVersionMap.remove(ctxt);
MappedHost[] hosts = this.hosts;
int pos = find(hosts, hostName);
if (pos < 0) {
return;
}
MappedHost host = hosts[pos];
if (host.name.equals(hostName)) {
synchronized (host) {
MappedContext[] contexts = host.contextList.contexts;
if (contexts.length == 0 ){
return;
}
int pos2 = find(contexts, path);
if (pos2 < 0 || !path.equals(contexts[pos2].name)) {
return;
}
MappedContext context = contexts[pos2];
ContextVersion[] contextVersions = context.versions;
ContextVersion[] newContextVersions =
new ContextVersion[contextVersions.length - 1];
if (removeMap(contextVersions, newContextVersions, version)) {
context.versions = newContextVersions;
if (context.versions.length == 0) {
// Remove the context
MappedContext[] newContexts = new MappedContext[contexts.length -1];
if (removeMap(contexts, newContexts, path)) {
host.contextList.contexts = newContexts;
// Recalculate nesting
host.contextList.nesting = 0;
for (int i = 0; i < newContexts.length; i++) {
int slashCount = slashCount(newContexts[i].name);
if (slashCount > host.contextList.nesting) {
host.contextList.nesting = slashCount;
}
}
}
}
}
}
}
}
public void addWrapper(String hostName, String contextPath, String version,
String path, Wrapper wrapper, boolean jspWildCard,
boolean resourceOnly) {
MappedHost[] hosts = this.hosts;
int pos = find(hosts, hostName);
if (pos < 0) {
return;
}
MappedHost host = hosts[pos];
if (host.name.equals(hostName)) {
MappedContext[] contexts = host.contextList.contexts;
int pos2 = find(contexts, contextPath);
if (pos2 < 0) {
log.error("No context found: " + contextPath );
return;
}
MappedContext context = contexts[pos2];
if (context.name.equals(contextPath)) {
ContextVersion[] contextVersions = context.versions;
int pos3 = find(contextVersions, version);
if( pos3<0 ) {
log.error("No context version found: " + contextPath + " " +
version);
return;
}
ContextVersion contextVersion = contextVersions[pos3];
if (contextVersion.name.equals(version)) {
addWrapper(contextVersion, path, wrapper, jspWildCard,
resourceOnly);
}
}
}
}
/**
* Adds a wrapper to the given context.
*
* @param context The context to which to add the wrapper
* @param path Wrapper mapping
* @param wrapper The Wrapper object
* @param jspWildCard true if the wrapper corresponds to the JspServlet
* @param resourceOnly true if this wrapper always expects a physical
* resource to be present (such as a JSP)
* and the mapping path contains a wildcard; false otherwise
*/
protected void addWrapper(ContextVersion context, String path,
Wrapper wrapper, boolean jspWildCard, boolean resourceOnly) {
synchronized (context) {
MappedWrapper newWrapper = new MappedWrapper();
newWrapper.object = wrapper;
newWrapper.jspWildCard = jspWildCard;
newWrapper.resourceOnly = resourceOnly;
if (path.endsWith("/*")) {
// Wildcard wrapper
newWrapper.name = path.substring(0, path.length() - 2);
MappedWrapper[] oldWrappers = context.wildcardWrappers;
MappedWrapper[] newWrappers =
new MappedWrapper[oldWrappers.length + 1];
if (insertMap(oldWrappers, newWrappers, newWrapper)) {
context.wildcardWrappers = newWrappers;
int slashCount = slashCount(newWrapper.name);
if (slashCount > context.nesting) {
context.nesting = slashCount;
}
}
} else if (path.startsWith("*.")) {
// Extension wrapper
newWrapper.name = path.substring(2);
MappedWrapper[] oldWrappers = context.extensionWrappers;
MappedWrapper[] newWrappers =
new MappedWrapper[oldWrappers.length + 1];
if (insertMap(oldWrappers, newWrappers, newWrapper)) {
context.extensionWrappers = newWrappers;
}
} else if (path.equals("/")) {
// Default wrapper
newWrapper.name = "";
context.defaultWrapper = newWrapper;
} else {
// Exact wrapper
if (path.length() == 0) {
// Special case for the Context Root mapping which is
// treated as an exact match
newWrapper.name = "/";
} else {
newWrapper.name = path;
}
MappedWrapper[] oldWrappers = context.exactWrappers;
MappedWrapper[] newWrappers =
new MappedWrapper[oldWrappers.length + 1];
if (insertMap(oldWrappers, newWrappers, newWrapper)) {
context.exactWrappers = newWrappers;
}
}
}
}
/**
* Remove a wrapper from an existing context.
*
* @param hostName Virtual host name this wrapper belongs to
* @param contextPath Context path this wrapper belongs to
* @param path Wrapper mapping
*/
public void removeWrapper
(String hostName, String contextPath, String version, String path) {
MappedHost[] hosts = this.hosts;
int pos = find(hosts, hostName);
if (pos < 0) {
return;
}
MappedHost host = hosts[pos];
if (host.name.equals(hostName)) {
MappedContext[] contexts = host.contextList.contexts;
int pos2 = find(contexts, contextPath);
if (pos2 < 0) {
return;
}
MappedContext context = contexts[pos2];
if (context.name.equals(contextPath)) {
ContextVersion[] contextVersions = context.versions;
int pos3 = find(contextVersions, version);
if( pos3<0 ) {
return;
}
ContextVersion contextVersion = contextVersions[pos3];
if (contextVersion.name.equals(version)) {
removeWrapper(contextVersion, path);
}
}
}
}
protected void removeWrapper(ContextVersion context, String path) {
if (log.isDebugEnabled()) {
log.debug(sm.getString("mapper.removeWrapper", context.name, path));
}
synchronized (context) {
if (path.endsWith("/*")) {
// Wildcard wrapper
String name = path.substring(0, path.length() - 2);
MappedWrapper[] oldWrappers = context.wildcardWrappers;
if (oldWrappers.length == 0) {
return;
}
MappedWrapper[] newWrappers =
new MappedWrapper[oldWrappers.length - 1];
if (removeMap(oldWrappers, newWrappers, name)) {
// Recalculate nesting
context.nesting = 0;
for (int i = 0; i < newWrappers.length; i++) {
int slashCount = slashCount(newWrappers[i].name);
if (slashCount > context.nesting) {
context.nesting = slashCount;
}
}
context.wildcardWrappers = newWrappers;
}
} else if (path.startsWith("*.")) {
// Extension wrapper
String name = path.substring(2);
MappedWrapper[] oldWrappers = context.extensionWrappers;
if (oldWrappers.length == 0) {
return;
}
MappedWrapper[] newWrappers =
new MappedWrapper[oldWrappers.length - 1];
if (removeMap(oldWrappers, newWrappers, name)) {
context.extensionWrappers = newWrappers;
}
} else if (path.equals("/")) {
// Default wrapper
context.defaultWrapper = null;
} else {
// Exact wrapper
String name;
if (path.length() == 0) {
// Special case for the Context Root mapping which is
// treated as an exact match
name = "/";
} else {
name = path;
}
MappedWrapper[] oldWrappers = context.exactWrappers;
if (oldWrappers.length == 0) {
return;
}
MappedWrapper[] newWrappers =
new MappedWrapper[oldWrappers.length - 1];
if (removeMap(oldWrappers, newWrappers, name)) {
context.exactWrappers = newWrappers;
}
}
}
}
/**
* Add a welcome file to the given context.
*
* @param hostName
* @param contextPath
* @param welcomeFile
*/
public void addWelcomeFile(String hostName, String contextPath,
String version, String welcomeFile) {
MappedHost[] hosts = this.hosts;
int pos = find(hosts, hostName);
if (pos < 0) {
return;
}
MappedHost host = hosts[pos];
if (host.name.equals(hostName)) {
MappedContext[] contexts = host.contextList.contexts;
int pos2 = find(contexts, contextPath);
if (pos2 < 0) {
log.error("No context found: " + contextPath );
return;
}
MappedContext context = contexts[pos2];
if (context.name.equals(contextPath)) {
ContextVersion[] contextVersions = context.versions;
int pos3 = find(contextVersions, version);
if( pos3<0 ) {
log.error("No context version found: " + contextPath + " " +
version);
return;
}
ContextVersion contextVersion = contextVersions[pos3];
if (contextVersion.name.equals(version)) {
int len = contextVersion.welcomeResources.length + 1;
String[] newWelcomeResources = new String[len];
System.arraycopy(contextVersion.welcomeResources, 0,
newWelcomeResources, 0, len - 1);
newWelcomeResources[len - 1] = welcomeFile;
contextVersion.welcomeResources = newWelcomeResources;
}
}
}
}
/**
* Remove a welcome file from the given context.
*
* @param hostName
* @param contextPath
* @param welcomeFile
*/
public void removeWelcomeFile(String hostName, String contextPath,
String version, String welcomeFile) {
MappedHost[] hosts = this.hosts;
int pos = find(hosts, hostName);
if (pos < 0) {
return;
}
MappedHost host = hosts[pos];
if (host.name.equals(hostName)) {
MappedContext[] contexts = host.contextList.contexts;
int pos2 = find(contexts, contextPath);
if (pos2 < 0) {
log.error("No context found: " + contextPath );
return;
}
MappedContext context = contexts[pos2];
if (context.name.equals(contextPath)) {
ContextVersion[] contextVersions = context.versions;
int pos3 = find(contextVersions, version);
if( pos3<0 ) {
log.error("No context version found: " + contextPath + " " +
version);
return;
}
ContextVersion contextVersion = contextVersions[pos3];
if (contextVersion.name.equals(version)) {
int match = -1;
for (int i = 0; i < contextVersion.welcomeResources.length; i++) {
if (welcomeFile.equals(contextVersion.welcomeResources[i])) {
match = i;
break;
}
}
if (match > -1) {
int len = contextVersion.welcomeResources.length - 1;
String[] newWelcomeResources = new String[len];
System.arraycopy(contextVersion.welcomeResources, 0,
newWelcomeResources, 0, match);
if (match < len) {
System.arraycopy(contextVersion.welcomeResources, match + 1,
newWelcomeResources, match, len - match);
}
contextVersion.welcomeResources = newWelcomeResources;
}
}
}
}
}
/**
* Clear the welcome files for the given context.
*
* @param hostName
* @param contextPath
*/
public void clearWelcomeFiles(String hostName, String contextPath,
String version) {
MappedHost[] hosts = this.hosts;
int pos = find(hosts, hostName);
if (pos < 0) {
return;
}
MappedHost host = hosts[pos];
if (host.name.equals(hostName)) {
MappedContext[] contexts = host.contextList.contexts;
int pos2 = find(contexts, contextPath);
if (pos2 < 0) {
log.error("No context found: " + contextPath );
return;
}
MappedContext context = contexts[pos2];
if (context.name.equals(contextPath)) {
ContextVersion[] contextVersions = context.versions;
int pos3 = find(contextVersions, version);
if( pos3<0 ) {
log.error("No context version found: " + contextPath + " " +
version);
return;
}
ContextVersion contextVersion = contextVersions[pos3];
if (contextVersion.name.equals(version)) {
contextVersion.welcomeResources = new String[0];
}
}
}
}
/**
* Map the specified host name and URI, mutating the given mapping data.
*
* @param host Virtual host name
* @param uri URI
* @param mappingData This structure will contain the result of the mapping
* operation
*/
public void map(MessageBytes host, MessageBytes uri, String version,
MappingData mappingData)
throws Exception {
if (host.isNull()) {
host.getCharChunk().append(defaultHostName);
}
host.toChars();
uri.toChars();
internalMap(host.getCharChunk(), uri.getCharChunk(), version,
mappingData);
}
/**
* Map the specified URI relative to the context,
* mutating the given mapping data.
*
* @param context The actual context
* @param uri URI
* @param mappingData This structure will contain the result of the mapping
* operation
*/
public void map(Context context, MessageBytes uri,
MappingData mappingData) throws Exception {
ContextVersion contextVersion =
contextObjectToContextVersionMap.get(context);
uri.toChars();
CharChunk uricc = uri.getCharChunk();
uricc.setLimit(-1);
internalMapWrapper(contextVersion, uricc, mappingData);
}
// -------------------------------------------------------- Private Methods
/**
* Map the specified URI.
*/
private final void internalMap(CharChunk host, CharChunk uri,
String version, MappingData mappingData) throws Exception {
uri.setLimit(-1);
MappedContext[] contexts = null;
MappedContext context = null;
ContextVersion contextVersion = null;
int nesting = 0;
// Virtual host mapping
if (mappingData.host == null) {
MappedHost[] hosts = this.hosts;
int pos = findIgnoreCase(hosts, host);
if ((pos != -1) && (host.equalsIgnoreCase(hosts[pos].name))) {
mappingData.host = hosts[pos].object;
contexts = hosts[pos].contextList.contexts;
nesting = hosts[pos].contextList.nesting;
} else {
if (defaultHostName == null) {
return;
}
pos = find(hosts, defaultHostName);
if ((pos != -1) && (defaultHostName.equals(hosts[pos].name))) {
mappingData.host = hosts[pos].object;
contexts = hosts[pos].contextList.contexts;
nesting = hosts[pos].contextList.nesting;
} else {
return;
}
}
}
// Context mapping
if (mappingData.context == null && contexts != null) {
int pos = find(contexts, uri);
if (pos == -1) {
return;
}
int lastSlash = -1;
int uriEnd = uri.getEnd();
int length = -1;
boolean found = false;
while (pos >= 0) {
if (uri.startsWith(contexts[pos].name)) {
length = contexts[pos].name.length();
if (uri.getLength() == length) {
found = true;
break;
} else if (uri.startsWithIgnoreCase("/", length)) {
found = true;
break;
}
}
if (lastSlash == -1) {
lastSlash = nthSlash(uri, nesting + 1);
} else {
lastSlash = lastSlash(uri);
}
uri.setEnd(lastSlash);
pos = find(contexts, uri);
}
uri.setEnd(uriEnd);
if (!found) {
if (contexts[0].name.equals("")) {
context = contexts[0];
}
} else {
context = contexts[pos];
}
if (context != null) {
mappingData.contextPath.setString(context.name);
}
}
if (context != null) {
ContextVersion[] contextVersions = context.versions;
int versionCount = contextVersions.length;
if (versionCount > 1) {
Context[] contextObjects = new Context[contextVersions.length];
for (int i = 0; i < contextObjects.length; i++) {
contextObjects[i] = contextVersions[i].object;
}
mappingData.contexts = contextObjects;
}
if (version == null) {
// Return the latest version
contextVersion = contextVersions[versionCount - 1];
} else {
int pos = find(contextVersions, version);
if (pos < 0 || !contextVersions[pos].name.equals(version)) {
// Return the latest version
contextVersion = contextVersions[versionCount - 1];
} else {
contextVersion = contextVersions[pos];
}
}
mappingData.context = contextVersion.object;
}
// Wrapper mapping
if ((contextVersion != null) && (mappingData.wrapper == null)) {
internalMapWrapper(contextVersion, uri, mappingData);
}
}
/**
* Wrapper mapping.
*/
private final void internalMapWrapper(ContextVersion contextVersion,
CharChunk path,
MappingData mappingData)
throws Exception {
int pathOffset = path.getOffset();
int pathEnd = path.getEnd();
int servletPath = pathOffset;
boolean noServletPath = false;
int length = contextVersion.path.length();
if (length != (pathEnd - pathOffset)) {
servletPath = pathOffset + length;
} else {
noServletPath = true;
path.append('/');
pathOffset = path.getOffset();
pathEnd = path.getEnd();
servletPath = pathOffset+length;
}
path.setOffset(servletPath);
// Rule 1 -- Exact Match
MappedWrapper[] exactWrappers = contextVersion.exactWrappers;
internalMapExactWrapper(exactWrappers, path, mappingData);
// Rule 2 -- Prefix Match
boolean checkJspWelcomeFiles = false;
MappedWrapper[] wildcardWrappers = contextVersion.wildcardWrappers;
if (mappingData.wrapper == null) {
internalMapWildcardWrapper(wildcardWrappers, contextVersion.nesting,
path, mappingData);
if (mappingData.wrapper != null && mappingData.jspWildCard) {
char[] buf = path.getBuffer();
if (buf[pathEnd - 1] == '/') {
/*
* Path ending in '/' was mapped to JSP servlet based on
* wildcard match (e.g., as specified in url-pattern of a
* jsp-property-group.
* Force the context's welcome files, which are interpreted
* as JSP files (since they match the url-pattern), to be
* considered. See Bugzilla 27664.
*/
mappingData.wrapper = null;
checkJspWelcomeFiles = true;
} else {
// See Bugzilla 27704
mappingData.wrapperPath.setChars(buf, path.getStart(),
path.getLength());
mappingData.pathInfo.recycle();
}
}
}
if(mappingData.wrapper == null && noServletPath) {
// The path is empty, redirect to "/"
mappingData.redirectPath.setChars
(path.getBuffer(), pathOffset, pathEnd-pathOffset);
path.setEnd(pathEnd - 1);
return;
}
// Rule 3 -- Extension Match
MappedWrapper[] extensionWrappers = contextVersion.extensionWrappers;
if (mappingData.wrapper == null && !checkJspWelcomeFiles) {
internalMapExtensionWrapper(extensionWrappers, path, mappingData,
true);
}
// Rule 4 -- Welcome resources processing for servlets
if (mappingData.wrapper == null) {
boolean checkWelcomeFiles = checkJspWelcomeFiles;
if (!checkWelcomeFiles) {
char[] buf = path.getBuffer();
checkWelcomeFiles = (buf[pathEnd - 1] == '/');
}
if (checkWelcomeFiles) {
for (int i = 0; (i < contextVersion.welcomeResources.length)
&& (mappingData.wrapper == null); i++) {
path.setOffset(pathOffset);
path.setEnd(pathEnd);
path.append(contextVersion.welcomeResources[i], 0,
contextVersion.welcomeResources[i].length());
path.setOffset(servletPath);
// Rule 4a -- Welcome resources processing for exact macth
internalMapExactWrapper(exactWrappers, path, mappingData);
// Rule 4b -- Welcome resources processing for prefix match
if (mappingData.wrapper == null) {
internalMapWildcardWrapper
(wildcardWrappers, contextVersion.nesting,
path, mappingData);
}
// Rule 4c -- Welcome resources processing
// for physical folder
if (mappingData.wrapper == null
&& contextVersion.resources != null) {
String pathStr = path.toString();
WebResource file =
contextVersion.resources.getResource(pathStr);
if (file != null && file.isFile()) {
internalMapExtensionWrapper(extensionWrappers, path,
mappingData, true);
if (mappingData.wrapper == null
&& contextVersion.defaultWrapper != null) {
mappingData.wrapper =
contextVersion.defaultWrapper.object;
mappingData.requestPath.setChars
(path.getBuffer(), path.getStart(),
path.getLength());
mappingData.wrapperPath.setChars
(path.getBuffer(), path.getStart(),
path.getLength());
mappingData.requestPath.setString(pathStr);
mappingData.wrapperPath.setString(pathStr);
}
}
}
}
path.setOffset(servletPath);
path.setEnd(pathEnd);
}
}
/* welcome file processing - take 2
* Now that we have looked for welcome files with a physical
* backing, now look for an extension mapping listed
* but may not have a physical backing to it. This is for
* the case of index.jsf, index.do, etc.
* A watered down version of rule 4
*/
if (mappingData.wrapper == null) {
boolean checkWelcomeFiles = checkJspWelcomeFiles;
if (!checkWelcomeFiles) {
char[] buf = path.getBuffer();
checkWelcomeFiles = (buf[pathEnd - 1] == '/');
}
if (checkWelcomeFiles) {
for (int i = 0; (i < contextVersion.welcomeResources.length)
&& (mappingData.wrapper == null); i++) {
path.setOffset(pathOffset);
path.setEnd(pathEnd);
path.append(contextVersion.welcomeResources[i], 0,
contextVersion.welcomeResources[i].length());
path.setOffset(servletPath);
internalMapExtensionWrapper(extensionWrappers, path,
mappingData, false);
}
path.setOffset(servletPath);
path.setEnd(pathEnd);
}
}
// Rule 7 -- Default servlet
if (mappingData.wrapper == null && !checkJspWelcomeFiles) {
if (contextVersion.defaultWrapper != null) {
mappingData.wrapper = contextVersion.defaultWrapper.object;
mappingData.requestPath.setChars
(path.getBuffer(), path.getStart(), path.getLength());
mappingData.wrapperPath.setChars
(path.getBuffer(), path.getStart(), path.getLength());
}
// Redirection to a folder
char[] buf = path.getBuffer();
if (contextVersion.resources != null && buf[pathEnd -1 ] != '/') {
String pathStr = path.toString();
WebResource file =
contextVersion.resources.getResource(pathStr);
if (file != null && file.isDirectory()) {
// Note: this mutates the path: do not do any processing
// after this (since we set the redirectPath, there
// shouldn't be any)
path.setOffset(pathOffset);
path.append('/');
mappingData.redirectPath.setChars
(path.getBuffer(), path.getStart(), path.getLength());
} else {
mappingData.requestPath.setString(pathStr);
mappingData.wrapperPath.setString(pathStr);
}
}
}
path.setOffset(pathOffset);
path.setEnd(pathEnd);
}
/**
* Exact mapping.
*/
private final void internalMapExactWrapper
(MappedWrapper[] wrappers, CharChunk path, MappingData mappingData) {
int pos = find(wrappers, path);
if ((pos != -1) && (path.equals(wrappers[pos].name))) {
mappingData.requestPath.setString(wrappers[pos].name);
mappingData.wrapper = wrappers[pos].object;
if (path.equals("/")) {
// Special handling for Context Root mapped servlet
mappingData.pathInfo.setString("/");
mappingData.wrapperPath.setString("");
// This seems wrong but it is what the spec says...
mappingData.contextPath.setString("");
} else {
mappingData.wrapperPath.setString(wrappers[pos].name);
}
}
}
/**
* Wildcard mapping.
*/
private final void internalMapWildcardWrapper
(MappedWrapper[] wrappers, int nesting, CharChunk path,
MappingData mappingData) {
int pathEnd = path.getEnd();
int lastSlash = -1;
int length = -1;
int pos = find(wrappers, path);
if (pos != -1) {
boolean found = false;
while (pos >= 0) {
if (path.startsWith(wrappers[pos].name)) {
length = wrappers[pos].name.length();
if (path.getLength() == length) {
found = true;
break;
} else if (path.startsWithIgnoreCase("/", length)) {
found = true;
break;
}
}
if (lastSlash == -1) {
lastSlash = nthSlash(path, nesting + 1);
} else {
lastSlash = lastSlash(path);
}
path.setEnd(lastSlash);
pos = find(wrappers, path);
}
path.setEnd(pathEnd);
if (found) {
mappingData.wrapperPath.setString(wrappers[pos].name);
if (path.getLength() > length) {
mappingData.pathInfo.setChars
(path.getBuffer(),
path.getOffset() + length,
path.getLength() - length);
}
mappingData.requestPath.setChars
(path.getBuffer(), path.getOffset(), path.getLength());
mappingData.wrapper = wrappers[pos].object;
mappingData.jspWildCard = wrappers[pos].jspWildCard;
}
}
}
/**
* Extension mappings.
*
* @param wrappers Set of wrappers to check for matches
* @param path Path to map
* @param mappingData Mapping data for result
* @param resourceExpected Is this mapping expecting to find a resource
*/
private final void internalMapExtensionWrapper(MappedWrapper[] wrappers,
CharChunk path, MappingData mappingData, boolean resourceExpected) {
char[] buf = path.getBuffer();
int pathEnd = path.getEnd();
int servletPath = path.getOffset();
int slash = -1;
for (int i = pathEnd - 1; i >= servletPath; i--) {
if (buf[i] == '/') {
slash = i;
break;
}
}
if (slash >= 0) {
int period = -1;
for (int i = pathEnd - 1; i > slash; i--) {
if (buf[i] == '.') {
period = i;
break;
}
}
if (period >= 0) {
path.setOffset(period + 1);
path.setEnd(pathEnd);
int pos = find(wrappers, path);
if ((pos != -1) && (path.equals(wrappers[pos].name)) &&
(resourceExpected || !wrappers[pos].resourceOnly)) {
mappingData.wrapperPath.setChars
(buf, servletPath, pathEnd - servletPath);
mappingData.requestPath.setChars
(buf, servletPath, pathEnd - servletPath);
mappingData.wrapper = wrappers[pos].object;
}
path.setOffset(servletPath);
path.setEnd(pathEnd);
}
}
}
/**
* Find a map element given its name in a sorted array of map elements.
* This will return the index for the closest inferior or equal item in the
* given array.
*/
private static final int find(MapElement[] map, CharChunk name) {
return find(map, name, name.getStart(), name.getEnd());
}
/**
* Find a map element given its name in a sorted array of map elements.
* This will return the index for the closest inferior or equal item in the
* given array.
*/
private static final int find(MapElement[] map, CharChunk name,
int start, int end) {
int a = 0;
int b = map.length - 1;
// Special cases: -1 and 0
if (b == -1) {
return -1;
}
if (compare(name, start, end, map[0].name) < 0 ) {
return -1;
}
if (b == 0) {
return 0;
}
int i = 0;
while (true) {
i = (b + a) / 2;
int result = compare(name, start, end, map[i].name);
if (result == 1) {
a = i;
} else if (result == 0) {
return i;
} else {
b = i;
}
if ((b - a) == 1) {
int result2 = compare(name, start, end, map[b].name);
if (result2 < 0) {
return a;
} else {
return b;
}
}
}
}
/**
* Find a map element given its name in a sorted array of map elements.
* This will return the index for the closest inferior or equal item in the
* given array.
*/
private static final int findIgnoreCase(MapElement[] map, CharChunk name) {
return findIgnoreCase(map, name, name.getStart(), name.getEnd());
}
/**
* Find a map element given its name in a sorted array of map elements.
* This will return the index for the closest inferior or equal item in the
* given array.
*/
private static final int findIgnoreCase(MapElement[] map, CharChunk name,
int start, int end) {
int a = 0;
int b = map.length - 1;
// Special cases: -1 and 0
if (b == -1) {
return -1;
}
if (compareIgnoreCase(name, start, end, map[0].name) < 0 ) {
return -1;
}
if (b == 0) {
return 0;
}
int i = 0;
while (true) {
i = (b + a) / 2;
int result = compareIgnoreCase(name, start, end, map[i].name);
if (result == 1) {
a = i;
} else if (result == 0) {
return i;
} else {
b = i;
}
if ((b - a) == 1) {
int result2 = compareIgnoreCase(name, start, end, map[b].name);
if (result2 < 0) {
return a;
} else {
return b;
}
}
}
}
/**
* Find a map element given its name in a sorted array of map elements.
* This will return the index for the closest inferior or equal item in the
* given array.
*/
private static final int find(MapElement[] map, String name) {
int a = 0;
int b = map.length - 1;
// Special cases: -1 and 0
if (b == -1) {
return -1;
}
if (name.compareTo(map[0].name) < 0) {
return -1;
}
if (b == 0) {
return 0;
}
int i = 0;
while (true) {
i = (b + a) / 2;
int result = name.compareTo(map[i].name);
if (result > 0) {
a = i;
} else if (result == 0) {
return i;
} else {
b = i;
}
if ((b - a) == 1) {
int result2 = name.compareTo(map[b].name);
if (result2 < 0) {
return a;
} else {
return b;
}
}
}
}
/**
* Compare given char chunk with String.
* Return -1, 0 or +1 if inferior, equal, or superior to the String.
*/
private static final int compare(CharChunk name, int start, int end,
String compareTo) {
int result = 0;
char[] c = name.getBuffer();
int len = compareTo.length();
if ((end - start) < len) {
len = end - start;
}
for (int i = 0; (i < len) && (result == 0); i++) {
if (c[i + start] > compareTo.charAt(i)) {
result = 1;
} else if (c[i + start] < compareTo.charAt(i)) {
result = -1;
}
}
if (result == 0) {
if (compareTo.length() > (end - start)) {
result = -1;
} else if (compareTo.length() < (end - start)) {
result = 1;
}
}
return result;
}
/**
* Compare given char chunk with String ignoring case.
* Return -1, 0 or +1 if inferior, equal, or superior to the String.
*/
private static final int compareIgnoreCase(CharChunk name, int start, int end,
String compareTo) {
int result = 0;
char[] c = name.getBuffer();
int len = compareTo.length();
if ((end - start) < len) {
len = end - start;
}
for (int i = 0; (i < len) && (result == 0); i++) {
if (Ascii.toLower(c[i + start]) > Ascii.toLower(compareTo.charAt(i))) {
result = 1;
} else if (Ascii.toLower(c[i + start]) < Ascii.toLower(compareTo.charAt(i))) {
result = -1;
}
}
if (result == 0) {
if (compareTo.length() > (end - start)) {
result = -1;
} else if (compareTo.length() < (end - start)) {
result = 1;
}
}
return result;
}
/**
* Find the position of the last slash in the given char chunk.
*/
private static final int lastSlash(CharChunk name) {
char[] c = name.getBuffer();
int end = name.getEnd();
int start = name.getStart();
int pos = end;
while (pos > start) {
if (c[--pos] == '/') {
break;
}
}
return (pos);
}
/**
* Find the position of the nth slash, in the given char chunk.
*/
private static final int nthSlash(CharChunk name, int n) {
char[] c = name.getBuffer();
int end = name.getEnd();
int start = name.getStart();
int pos = start;
int count = 0;
while (pos < end) {
if ((c[pos++] == '/') && ((++count) == n)) {
pos--;
break;
}
}
return (pos);
}
/**
* Return the slash count in a given string.
*/
private static final int slashCount(String name) {
int pos = -1;
int count = 0;
while ((pos = name.indexOf('/', pos + 1)) != -1) {
count++;
}
return count;
}
/**
* Insert into the right place in a sorted MapElement array, and prevent
* duplicates.
*/
private static final boolean insertMap
(MapElement[] oldMap, MapElement[] newMap, MapElement newElement) {
int pos = find(oldMap, newElement.name);
if ((pos != -1) && (newElement.name.equals(oldMap[pos].name))) {
return false;
}
System.arraycopy(oldMap, 0, newMap, 0, pos + 1);
newMap[pos + 1] = newElement;
System.arraycopy
(oldMap, pos + 1, newMap, pos + 2, oldMap.length - pos - 1);
return true;
}
/**
* Insert into the right place in a sorted MapElement array.
*/
private static final boolean removeMap
(MapElement[] oldMap, MapElement[] newMap, String name) {
int pos = find(oldMap, name);
if ((pos != -1) && (name.equals(oldMap[pos].name))) {
System.arraycopy(oldMap, 0, newMap, 0, pos);
System.arraycopy(oldMap, pos + 1, newMap, pos,
oldMap.length - pos - 1);
return true;
}
return false;
}
// ------------------------------------------------- MapElement Inner Class
protected abstract static class MapElement {
public String name = null;
public T object = null;
}
// ------------------------------------------------------- Host Inner Class
protected static final class MappedHost
extends MapElement {
public ContextList contextList = null;
}
// ------------------------------------------------ ContextList Inner Class
protected static final class ContextList {
public MappedContext[] contexts = new MappedContext[0];
public int nesting = 0;
}
// ---------------------------------------------------- Context Inner Class
protected static final class MappedContext extends MapElement {
public ContextVersion[] versions = new ContextVersion[0];
}
protected static final class ContextVersion extends MapElement {
public String path = null;
public String[] welcomeResources = new String[0];
public WebResourceRoot resources = null;
public MappedWrapper defaultWrapper = null;
public MappedWrapper[] exactWrappers = new MappedWrapper[0];
public MappedWrapper[] wildcardWrappers = new MappedWrapper[0];
public MappedWrapper[] extensionWrappers = new MappedWrapper[0];
public int nesting = 0;
}
// ---------------------------------------------------- Wrapper Inner Class
protected static class MappedWrapper
extends MapElement {
public boolean jspWildCard = false;
public boolean resourceOnly = false;
}
}
