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The Adobe Experience Manager SDK
/*
* Copyright 1997-2008 Day Management AG
* Barfuesserplatz 6, 4001 Basel, Switzerland
* All Rights Reserved.
*
* This software is the confidential and proprietary information of
* Day Management AG, ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Day.
*/
package com.day.cq.rewriter.linkchecker;
import java.net.URI;
import java.net.URISyntaxException;
import javax.jcr.Item;
import javax.jcr.Node;
import javax.jcr.RepositoryException;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.day.cq.commons.jcr.JcrConstants;
/**
* Settings that control the behaviour of the {@link LinkChecker}. The settings
* are used as a "linkchecker context" that holds the base-ref and
* context uri, and to control the actual rewrite behavior.
*
* If "request" is not attached, they are used merely temporary before the
* actual linkchecker is initialized.
*/
public class LinkCheckerSettings {
/**
* default logger
*/
private static final Logger log = LoggerFactory.getLogger(LinkCheckerSettings.class);
/**
* the name of the request attribute
*/
public static final String REQUEST_ATTRIBUTE_NAME = LinkCheckerSettings.class.getName();
/**
* The HTTP request whose response we are checking.
*/
private SlingHttpServletRequest request;
/**
* rewrite config for invalid links
*/
private LinkRewriteConfig invalidConfig;
/**
* rewrite config for expired links
*/
private LinkRewriteConfig expiredConfig;
/**
* rewrite config for predated links
*/
private LinkRewriteConfig predatedConfig;
/**
* The base url to resolve relative to.
*/
private String baseRef;
/**
* if true internal links are not checked
*/
private boolean ignoreInternals;
/**
* if true internal links are not checked
*/
private boolean ignoreExternals;
/**
* the cached context uri
*/
private URI contextUri;
/**
* the cached base uri
*/
private URI baseUri;
/**
* Returns the current link checker settings for the current request.
*
* @param request the request
* @return the settings or null
*/
public static LinkCheckerSettings fromRequest(SlingHttpServletRequest request) {
LinkCheckerSettings settings = (LinkCheckerSettings) request.getAttribute(REQUEST_ATTRIBUTE_NAME);
if (settings == null) {
// create temporary settings
settings = new LinkCheckerSettings();
request.setAttribute(REQUEST_ATTRIBUTE_NAME, settings);
}
return settings;
}
/**
* Attach the settings to the request.
*
* @param request The current request
*/
public void init(SlingHttpServletRequest request) {
this.request = request;
}
public SlingHttpServletRequest getRequest() {
return request;
}
/**
* Returns the resource resolver
*
* @return the resource resolver
*/
public ResourceResolver getResourceResolver() {
return request.getResourceResolver();
}
/**
* Returns the context path
*
* @return the context path
*/
public String getContextPath() {
return request.getContextPath();
}
/**
* Returns the context URI of the web application associated with the
* given settings.
*
* @return context URI, or null if the URI malformed
*
* @since 5.3
*/
public URI getContextURI() {
if (contextUri == null) {
try {
String context = request.getContextPath() + "/";
URI uri = new URI(request.getRequestURL().toString());
contextUri = new URI(
uri.getScheme(), uri.getRawUserInfo(),
uri.getHost(), uri.getPort(), context, null, null);
} catch (URISyntaxException e) {
log.warn("Ignoring malformed context URI: {}", e.toString());
}
}
return contextUri;
}
/**
* Returns the config for invalid links
*
* @return the config for invalid links
*/
public LinkRewriteConfig getInvalidConfig() {
return invalidConfig;
}
/**
* Sets the config for invalid links
*
* @param config the config
*/
public void setInvalidConfig(LinkRewriteConfig config) {
this.invalidConfig = config;
}
/**
* Returns the config for expired links
*
* @return the config for expired links
*/
public LinkRewriteConfig getExpiredConfig() {
return expiredConfig;
}
/**
* Sets the config for expired links
*
* @param config the config
*/
public void setExpiredConfig(LinkRewriteConfig config) {
this.expiredConfig = config;
}
/**
* Returns the config for predated links
*
* @return the config
*/
public LinkRewriteConfig getPredatedConfig() {
return predatedConfig;
}
/**
* Sets the config for predated links
*
* @param config the config
*/
public void setPredatedConfig(LinkRewriteConfig config) {
this.predatedConfig = config;
}
/**
* Get the current request uri.
*
* @return the request uri
*/
public String getRequestURI() {
return request.getRequestURI();
}
/**
* Return a uri to the parent of the current uri.
*
* @return the parent uri or an empty string
*/
public String getParentRequestURI() {
String requestURI = getRequestURI();
if (requestURI == null) {
return "";
} else {
String parentRequestURI = requestURI;
// if the resource does not point to an item in the repository
// we just take the immediate parent
boolean doFallback = true;
if (request.getResource().adaptTo(Item.class) != null) {
final Resource parent = ResourceUtil.getParent(request.getResource());
if (parent != null) {
Node n = parent.adaptTo(Node.class);
if (n != null) {
int index = 1;
try {
while (!n.isNodeType(JcrConstants.NT_HIERARCHYNODE)) {
n = n.getParent();
index++;
}
// we want the parent of the hierarchy node, so:
index++;
int pos = requestURI.length();
for (int i = 0; i < index; i++) {
pos = requestURI.lastIndexOf('/', pos - 1);
}
if (pos > 0) {
parentRequestURI = requestURI.substring(0, pos + 1);
doFallback = false;
}
} catch (RepositoryException e) {
// we ignore this!
}
}
}
}
if (doFallback) {
final int pos = requestURI.lastIndexOf('/');
if (pos > 0) {
parentRequestURI = requestURI.substring(0, pos + 1);
}
}
// now remove context prefix
String prefix = getContextPath();
if (prefix != null && prefix.length() > 0
&& parentRequestURI.startsWith(prefix)) {
if (parentRequestURI.length() == prefix.length()
|| parentRequestURI.charAt(prefix.length()) == '/') {
return parentRequestURI.substring(prefix.length());
}
}
return parentRequestURI;
}
}
/**
* Get the current base ref.
*
* @return the base href
*/
public String getBaseRef() {
return baseRef;
}
/**
* Returns the base URI of the request associated with the given
* settings.
*
* @return base URI, or null if the URI malformed
*
* @since 5.3
*/
public URI getBaseURI() {
if (baseUri == null) {
String base = baseRef;
if (base == null) {
StringBuffer url = request.getRequestURL();
if (url.indexOf("/jcr:content") > 0) {
// links are relative to their page, not components on the page; see bug #36375
base = url.substring(0, url.indexOf("/jcr:content"));
} else {
base = url.toString();
}
}
try {
baseUri = new URI(base);
} catch (URISyntaxException e) {
log.warn("Ignoring malformed base URI: {}", e.toString());
return null;
}
}
return baseUri;
}
/**
* Set the current base ref.
*
* @param baseRef the base href
*/
public void setBaseRef(String baseRef) {
this.baseRef = baseRef;
this.baseUri = null;
}
/**
* If true internal links are not checked
* @return true if internal links are not checked
*/
public boolean isIgnoreInternals() {
return ignoreInternals;
}
/**
* Controls if internal links should be checked by the linkchecker.
* If set to true all internal links are treated as 'valid'.
*
* Please note that the settings are directly used by the linkchecker transformer
* and are respected on a "startElement" event. When altered on-the-fly in a
* JSP don't forget to flush the writer before changing the value.
*
* @param ignoreInternals if true internal links are not checked
* @return previous value
*/
public boolean setIgnoreInternals(boolean ignoreInternals) {
boolean ret = this.ignoreInternals;
this.ignoreInternals = ignoreInternals;
return ret;
}
/**
* If true, external links are not checked
* @return true if external links are not checked
*/
public boolean isIgnoreExternals() {
return ignoreExternals;
}
/**
* Controls if external links should be checked by the linkchecker.
* If set to true all external links are treated as 'valid' and
* they are also not recorded in the external-link storage.
*
* Please note that the settings are directly used by the linkchecker transformer
* and are respected on a "startElement" event. When altered on-the-fly in a
* JSP don't forget to flush the writer before changing the value.
*
* @param ignoreExternals if true external links are not checked
* @return previous value
*/
public boolean setIgnoreExternals(boolean ignoreExternals) {
boolean ret = this.ignoreExternals;
this.ignoreExternals = ignoreExternals;
return ret;
}
}
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