com.sun.grizzly.tcp.StaticResourcesAdapter Maven / Gradle / Ivy
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package com.sun.grizzly.tcp;
import com.sun.grizzly.tcp.http11.GrizzlyAdapter;
import com.sun.grizzly.util.DataStructures;
import com.sun.grizzly.util.LoggerUtils;
import com.sun.grizzly.util.buf.ByteChunk;
import com.sun.grizzly.util.http.HtmlHelper;
import com.sun.grizzly.util.http.HttpRequestURIDecoder;
import java.io.FileInputStream;
import java.io.IOException;
import java.lang.Exception;
import java.util.concurrent.ConcurrentHashMap;
import java.util.logging.Level;
import com.sun.grizzly.util.http.MimeType;
import java.io.File;
import java.nio.ByteBuffer;
import java.util.Queue;
import java.util.concurrent.locks.ReentrantLock;
import java.util.logging.Logger;
/**
* Simple {@link Adapter} that map the {@link Request} URI to a local file. The
* file is send synchronously using the NIO send file mechanism
* (@link File#transfertTo}.
*
* This class doesn't not decode the {@link Request} uri and just do
* basic security check. If you need more protection, use the {@link GrizzlyAdapter}
* class instead or extend the {@link StaticResourcesAdapter#service}
* and use {@link HttpRequestURIDecoder} to protect against security attack.
*
* @author Jeanfrancois Arcand
*/
public class StaticResourcesAdapter implements Adapter {
private final static String USE_SEND_FILE =
"com.sun.grizzly.useSendFile";
private final Queue rootFolders =
DataStructures.getCLQinstance(String.class);
protected String resourcesContextPath = "";
protected final Queue fileFolders =
DataStructures.getCLQinstance(File.class);
protected final ConcurrentHashMap cache = new ConcurrentHashMap();
protected Logger logger = LoggerUtils.getLogger();
private boolean useSendFile = true;
/**
* Commit the 404 response automatically.
*/
protected boolean commitErrorResponse = true;
private final ReentrantLock initializedLock = new ReentrantLock();
private String defaultContentType = "text/html";
public StaticResourcesAdapter() {
this(".");
}
public StaticResourcesAdapter(String rootFolder) {
addRootFolder(rootFolder);
// Ugly workaround
// See Issue 327
if ((System.getProperty("os.name").equalsIgnoreCase("linux")
&& !linuxSendFileSupported())
|| System.getProperty("os.name").equalsIgnoreCase("HP-UX")) {
useSendFile = false;
}
if (System.getProperty(USE_SEND_FILE) != null) {
useSendFile = Boolean.valueOf(System.getProperty(USE_SEND_FILE));
logger.info("Send-file enabled:" + useSendFile);
}
}
/**
* Based on the {@link Request} URI, try to map the file from the rootFolder, and send it synchronously using send file.
* @param req the {@link Request}
* @param res the {@link Response}
* @throws Exception
*/
public void service(Request req, final Response res) throws Exception {
String uri = req.requestURI().toString();
if (uri.contains("..") || !uri.startsWith(resourcesContextPath)) {
res.setStatus(404);
if (commitErrorResponse) {
customizedErrorPage(req, res);
}
return;
}
// We map only file that take the form of name.extension
if (uri.contains(".")) {
uri = uri.substring(resourcesContextPath.length());
}
service(uri, req, res);
}
/**
* Lookup a resource based on the request URI, and send it using send file.
*
* @param uri The request URI
* @param req the {@link Request}
* @param res the {@link Response}
* @throws Exception
*/
protected void service(String uri, Request req, final Response res)
throws Exception {
FileInputStream fis = null;
try {
initWebDir();
boolean found = false;
File resource = null;
for (File webDir : fileFolders) {
// local file
resource = cache.get(uri);
if (resource == null) {
resource = new File(webDir, uri);
if (resource.exists() && resource.isDirectory()) {
final File f = new File(resource, "/index.html");
if (f.exists()) {
resource = f;
found = true;
break;
}
}
}
if (resource.isDirectory() || !resource.exists()) {
found = false;
} else {
found = true;
break;
}
}
cache.put(uri, resource);
if (!found) {
if (logger.isLoggable(Level.FINE)) {
logger.log(Level.FINE, "File not found " + resource);
}
res.setStatus(404);
if (commitErrorResponse) {
customizedErrorPage(req, res);
}
return;
}
res.setStatus(200);
String substr;
int dot = uri.lastIndexOf(".");
if (dot < 0) {
substr = resource.toString();
dot = substr.lastIndexOf(".");
} else {
substr = uri;
}
if (dot > 0) {
String ext = substr.substring(dot + 1);
String ct = MimeType.get(ext, defaultContentType);
if (ct != null) {
res.setContentType(ct);
}
} else {
res.setContentType(defaultContentType);
}
long length = resource.length();
res.setContentLengthLong(length);
// Send the header, and flush the bytes as we will now move to use
// send file.
res.sendHeaders();
if (req.method().toString().equalsIgnoreCase("HEAD")){
return;
}
fis = new FileInputStream(resource);
OutputBuffer outputBuffer = res.getOutputBuffer();
if (useSendFile &&
(outputBuffer instanceof FileOutputBuffer) &&
((FileOutputBuffer) outputBuffer).isSupportFileSend()) {
res.flush();
long nWrite = 0;
while (nWrite < length) {
nWrite += ((FileOutputBuffer) outputBuffer).sendFile(fis.getChannel(), nWrite, length - nWrite);
}
} else {
byte b[] = new byte[8192];
ByteChunk chunk = new ByteChunk();
int rd;
while ((rd = fis.read(b)) > 0) {
chunk.setBytes(b, 0, rd);
res.doWrite(chunk);
}
}
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException ignored) {
}
}
}
}
/**
* Customize the error pahe
* @param req The {@link Request} object
* @param res The {@link Response} object
* @throws Exception
*/
protected void customizedErrorPage(Request req,
Response res) throws Exception {
/**
* With Grizzly, we just return a 404 with a simple error message.
*/
res.setMessage("Not Found");
res.setStatus(404);
ByteBuffer bb = HtmlHelper.getErrorPage("Not Found", "HTTP/1.1 404 Not Found\r\n", "Grizzly");
res.setContentLength(bb.limit());
res.setContentType("text/html");
res.flushHeaders();
if (res.getChannel() != null) {
res.getChannel().write(bb);
req.setNote(14, "SkipAfterService");
} else {
byte b[] = new byte[bb.limit()];
bb.get(b);
ByteChunk chunk = new ByteChunk();
chunk.setBytes(b, 0, b.length);
res.doWrite(chunk);
}
}
/**
* Finish the {@link Response} and recycle the {@link Request} and the
* {@link Response}. If the {@link StaticResourcesAdapter#commitErrorResponse}
* is set to false, this method does nothing.
*
* @param req {@link Request}
* @param res {@link Response}
* @throws Exception
*/
public void afterService(Request req, Response res) throws Exception {
if (req.getNote(14) != null) {
req.setNote(14, null);
return;
}
if (res.getStatus() == 404 && !commitErrorResponse) {
return;
}
try {
req.action(ActionCode.ACTION_POST_REQUEST, null);
} catch (Throwable t) {
logger.log(Level.WARNING, "afterService unexpected exception: ", t);
}
res.finish();
}
/**
* Return the directory from where files will be serviced.
* @return the directory from where file will be serviced.
* @deprecated - use {@link #getRootFolders}
*/
public String getRootFolder() {
return rootFolders.peek();
}
/**
* Set the directory from where files will be serviced.
*
* NOTE: For backward compatibility, invoking that method will
* clear all previous values added using {@link #addRootFolder}.
*
* @param rootFolder the directory from where files will be serviced.
*
* @deprecated - use {@link #addRootFolder}
*/
public void setRootFolder(String rootFolder) {
rootFolders.clear();
addRootFolder(rootFolder);
}
/**
* Return the list of folders the adapter can serve file from.
* @return a {@link Queue} of the folders this Adapter can
* serve file from.
*/
public Queue getRootFolders() {
return rootFolders;
}
/**
* Add a folder to the list of folders this Adapter can serve file from.
* @param rootFolder
* @return
*/
public boolean addRootFolder(String rootFolder) {
return rootFolders.offer(rootFolder);
}
/**
* Initialize.
*/
protected void initWebDir() throws IOException {
try {
initializedLock.lock();
if (fileFolders.isEmpty()) {
for (String s : rootFolders) {
File webDir = new File(s);
fileFolders.offer(webDir);
}
rootFolders.clear();
for (File f : fileFolders) {
rootFolders.add(f.getCanonicalPath());
}
}
} finally {
initializedLock.unlock();
}
}
@SuppressWarnings("UnusedDeclaration")
public void setLogger(Logger logger) {
this.logger = logger;
}
/**
* @return true if {@link java.nio.channels.FileChannel#transferTo(long, long, java.nio.channels.WritableByteChannel)}
* to send a static resources.
*/
@SuppressWarnings("UnusedDeclaration")
public boolean isUseSendFile() {
return useSendFile;
}
/**
* true if {@link java.nio.channels.FileChannel#transferTo(long, long, java.nio.channels.WritableByteChannel)}
* to send a static resources, false if the File needs to be loaded in
* memory and flushed using {@link ByteBuffer}.
*
* @param useSendFile True if {@link java.nio.channels.FileChannel#transferTo(long, long, java.nio.channels.WritableByteChannel)}
* to send a static resources, false if the File needs to be loaded in
* memory and flushed using {@link ByteBuffer}
*/
public void setUseSendFile(boolean useSendFile) {
this.useSendFile = useSendFile;
}
/**
* Return the context path used for servicing resources. By default, "" is
* used so request taking the form of http://host:port/index.html are serviced
* directly. If set, the resource will be available under
* http://host:port/context-path/index.html
* @return the context path.
*/
@SuppressWarnings("UnusedDeclaration")
public String getResourcesContextPath() {
return resourcesContextPath;
}
/**
* Set the context path used for servicing resource. By default, "" is
* used so request taking the form of http://host:port/index.html are serviced
* directly. If set, the resource will be available under
* http://host:port/context-path/index.html
* @param resourcesContextPath the context path
*/
public void setResourcesContextPath(String resourcesContextPath) {
this.resourcesContextPath = resourcesContextPath;
}
/**
* If the content-type of the request cannot be determined, used the default
* value. Current default is text/html
*
* @return the defaultContentType
*/
@SuppressWarnings("UnusedDeclaration")
public String getDefaultContentType() {
return defaultContentType;
}
/**
* Set the default content-type if we can't determine it.
* Default was text/html
*
* @param defaultContentType the defaultContentType to set
*/
public void setDefaultContentType(String defaultContentType) {
this.defaultContentType = defaultContentType;
}
private static boolean linuxSendFileSupported(final String jdkVersion) {
if (jdkVersion.startsWith("1.6")) {
int idx = jdkVersion.indexOf('_');
if (idx == -1) {
return false;
}
StringBuilder sb = new StringBuilder(3);
final String substr = jdkVersion.substring(idx + 1);
int len = Math.min(substr.length(), 3);
for (int i = 0; i < len; i++) {
final char c = substr.charAt(i);
if (Character.isDigit(c)) {
sb.append(c);
continue;
}
break;
}
if (sb.length() == 0) {
return false;
}
final int patchRev = Integer.parseInt(sb.toString());
return (patchRev >= 18);
} else {
return jdkVersion.startsWith("1.7") || jdkVersion.startsWith("1.8");
}
}
private static boolean linuxSendFileSupported() {
return linuxSendFileSupported(System.getProperty("java.version"));
}
}
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