| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * FTP stream opener. |
| */ |
| |
| package sun.net.www.protocol.ftp; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.BufferedInputStream; |
| import java.io.FilterInputStream; |
| import java.io.FilterOutputStream; |
| import java.io.FileNotFoundException; |
| import java.net.URL; |
| import java.net.SocketPermission; |
| import java.net.UnknownHostException; |
| import java.net.InetSocketAddress; |
| import java.net.URI; |
| import java.net.Proxy; |
| import java.net.ProxySelector; |
| import java.util.StringTokenizer; |
| import java.util.Iterator; |
| import java.security.Permission; |
| import libcore.net.NetworkSecurityPolicy; |
| import sun.net.NetworkClient; |
| import sun.net.www.MessageHeader; |
| import sun.net.www.MeteredStream; |
| import sun.net.www.URLConnection; |
| import sun.net.www.protocol.http.HttpURLConnection; |
| import sun.net.ftp.FtpClient; |
| import sun.net.ftp.FtpProtocolException; |
| import sun.net.ProgressSource; |
| import sun.net.ProgressMonitor; |
| import sun.net.www.ParseUtil; |
| import sun.security.action.GetPropertyAction; |
| |
| |
| /** |
| * This class Opens an FTP input (or output) stream given a URL. |
| * It works as a one shot FTP transfer : |
| * <UL> |
| * <LI>Login</LI> |
| * <LI>Get (or Put) the file</LI> |
| * <LI>Disconnect</LI> |
| * </UL> |
| * You should not have to use it directly in most cases because all will be handled |
| * in a abstract layer. Here is an example of how to use the class : |
| * <P> |
| * <code>URL url = new URL("ftp://ftp.sun.com/pub/test.txt");<p> |
| * UrlConnection con = url.openConnection();<p> |
| * InputStream is = con.getInputStream();<p> |
| * ...<p> |
| * is.close();</code> |
| * |
| * @see sun.net.ftp.FtpClient |
| */ |
| public class FtpURLConnection extends URLConnection { |
| |
| // In case we have to use proxies, we use HttpURLConnection |
| HttpURLConnection http = null; |
| private Proxy instProxy; |
| |
| InputStream is = null; |
| OutputStream os = null; |
| |
| FtpClient ftp = null; |
| Permission permission; |
| |
| String password; |
| String user; |
| |
| String host; |
| String pathname; |
| String filename; |
| String fullpath; |
| int port; |
| static final int NONE = 0; |
| static final int ASCII = 1; |
| static final int BIN = 2; |
| static final int DIR = 3; |
| int type = NONE; |
| /* Redefine timeouts from java.net.URLConnection as we need -1 to mean |
| * not set. This is to ensure backward compatibility. |
| */ |
| private int connectTimeout = NetworkClient.DEFAULT_CONNECT_TIMEOUT;; |
| private int readTimeout = NetworkClient.DEFAULT_READ_TIMEOUT;; |
| |
| /** |
| * For FTP URLs we need to have a special InputStream because we |
| * need to close 2 sockets after we're done with it : |
| * - The Data socket (for the file). |
| * - The command socket (FtpClient). |
| * Since that's the only class that needs to see that, it is an inner class. |
| */ |
| protected class FtpInputStream extends FilterInputStream { |
| FtpClient ftp; |
| FtpInputStream(FtpClient cl, InputStream fd) { |
| super(new BufferedInputStream(fd)); |
| ftp = cl; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| super.close(); |
| if (ftp != null) { |
| ftp.close(); |
| } |
| } |
| } |
| |
| /** |
| * For FTP URLs we need to have a special OutputStream because we |
| * need to close 2 sockets after we're done with it : |
| * - The Data socket (for the file). |
| * - The command socket (FtpClient). |
| * Since that's the only class that needs to see that, it is an inner class. |
| */ |
| protected class FtpOutputStream extends FilterOutputStream { |
| FtpClient ftp; |
| FtpOutputStream(FtpClient cl, OutputStream fd) { |
| super(fd); |
| ftp = cl; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| super.close(); |
| if (ftp != null) { |
| ftp.close(); |
| } |
| } |
| } |
| |
| /** |
| * Creates an FtpURLConnection from a URL. |
| * |
| * @param url The <code>URL</code> to retrieve or store. |
| */ |
| public FtpURLConnection(URL url) throws IOException { |
| this(url, null); |
| } |
| |
| /** |
| * Same as FtpURLconnection(URL) with a per connection proxy specified |
| */ |
| FtpURLConnection(URL url, Proxy p) throws IOException { |
| super(url); |
| instProxy = p; |
| host = url.getHost(); |
| port = url.getPort(); |
| String userInfo = url.getUserInfo(); |
| |
| if (!NetworkSecurityPolicy.getInstance().isCleartextTrafficPermitted()) { |
| // Cleartext network traffic is not permitted -- refuse this connection. |
| throw new IOException("Cleartext traffic not permitted: " |
| + url.getProtocol() + "://" + host |
| + ((url.getPort() >= 0) ? (":" + url.getPort()) : "")); |
| } |
| |
| if (userInfo != null) { // get the user and password |
| int delimiter = userInfo.indexOf(':'); |
| if (delimiter == -1) { |
| user = ParseUtil.decode(userInfo); |
| password = null; |
| } else { |
| user = ParseUtil.decode(userInfo.substring(0, delimiter++)); |
| password = ParseUtil.decode(userInfo.substring(delimiter)); |
| } |
| } |
| } |
| |
| private void setTimeouts() { |
| if (ftp != null) { |
| if (connectTimeout >= 0) { |
| ftp.setConnectTimeout(connectTimeout); |
| } |
| if (readTimeout >= 0) { |
| ftp.setReadTimeout(readTimeout); |
| } |
| } |
| } |
| |
| /** |
| * Connects to the FTP server and logs in. |
| * |
| * @throws FtpLoginException if the login is unsuccessful |
| * @throws FtpProtocolException if an error occurs |
| * @throws UnknownHostException if trying to connect to an unknown host |
| */ |
| |
| public synchronized void connect() throws IOException { |
| if (connected) { |
| return; |
| } |
| |
| Proxy p = null; |
| if (instProxy == null) { // no per connection proxy specified |
| /** |
| * Do we have to use a proxy? |
| */ |
| ProxySelector sel = java.security.AccessController.doPrivileged( |
| new java.security.PrivilegedAction<ProxySelector>() { |
| public ProxySelector run() { |
| return ProxySelector.getDefault(); |
| } |
| }); |
| if (sel != null) { |
| URI uri = sun.net.www.ParseUtil.toURI(url); |
| Iterator<Proxy> it = sel.select(uri).iterator(); |
| while (it.hasNext()) { |
| p = it.next(); |
| if (p == null || p == Proxy.NO_PROXY || |
| p.type() == Proxy.Type.SOCKS) { |
| break; |
| } |
| if (p.type() != Proxy.Type.HTTP || |
| !(p.address() instanceof InetSocketAddress)) { |
| sel.connectFailed(uri, p.address(), new IOException("Wrong proxy type")); |
| continue; |
| } |
| // OK, we have an http proxy |
| InetSocketAddress paddr = (InetSocketAddress) p.address(); |
| try { |
| http = new HttpURLConnection(url, p); |
| http.setDoInput(getDoInput()); |
| http.setDoOutput(getDoOutput()); |
| if (connectTimeout >= 0) { |
| http.setConnectTimeout(connectTimeout); |
| } |
| if (readTimeout >= 0) { |
| http.setReadTimeout(readTimeout); |
| } |
| http.connect(); |
| connected = true; |
| return; |
| } catch (IOException ioe) { |
| sel.connectFailed(uri, paddr, ioe); |
| http = null; |
| } |
| } |
| } |
| } else { // per connection proxy specified |
| p = instProxy; |
| if (p.type() == Proxy.Type.HTTP) { |
| http = new HttpURLConnection(url, instProxy); |
| http.setDoInput(getDoInput()); |
| http.setDoOutput(getDoOutput()); |
| if (connectTimeout >= 0) { |
| http.setConnectTimeout(connectTimeout); |
| } |
| if (readTimeout >= 0) { |
| http.setReadTimeout(readTimeout); |
| } |
| http.connect(); |
| connected = true; |
| return; |
| } |
| } |
| |
| if (user == null) { |
| user = "anonymous"; |
| String vers = java.security.AccessController.doPrivileged( |
| new GetPropertyAction("java.version")); |
| password = java.security.AccessController.doPrivileged( |
| new GetPropertyAction("ftp.protocol.user", |
| "Java" + vers + "@")); |
| } |
| try { |
| ftp = FtpClient.create(); |
| if (p != null) { |
| ftp.setProxy(p); |
| } |
| setTimeouts(); |
| if (port != -1) { |
| ftp.connect(new InetSocketAddress(host, port)); |
| } else { |
| ftp.connect(new InetSocketAddress(host, FtpClient.defaultPort())); |
| } |
| } catch (UnknownHostException e) { |
| // Maybe do something smart here, like use a proxy like iftp. |
| // Just keep throwing for now. |
| throw e; |
| } catch (FtpProtocolException fe) { |
| throw new IOException(fe); |
| } |
| try { |
| ftp.login(user, password.toCharArray()); |
| } catch (sun.net.ftp.FtpProtocolException e) { |
| ftp.close(); |
| // Backward compatibility |
| throw new sun.net.ftp.FtpLoginException("Invalid username/password"); |
| } |
| connected = true; |
| } |
| |
| |
| /* |
| * Decodes the path as per the RFC-1738 specifications. |
| */ |
| private void decodePath(String path) { |
| int i = path.indexOf(";type="); |
| if (i >= 0) { |
| String s1 = path.substring(i + 6, path.length()); |
| if ("i".equalsIgnoreCase(s1)) { |
| type = BIN; |
| } |
| if ("a".equalsIgnoreCase(s1)) { |
| type = ASCII; |
| } |
| if ("d".equalsIgnoreCase(s1)) { |
| type = DIR; |
| } |
| path = path.substring(0, i); |
| } |
| if (path != null && path.length() > 1 && |
| path.charAt(0) == '/') { |
| path = path.substring(1); |
| } |
| if (path == null || path.length() == 0) { |
| path = "./"; |
| } |
| if (!path.endsWith("/")) { |
| i = path.lastIndexOf('/'); |
| if (i > 0) { |
| filename = path.substring(i + 1, path.length()); |
| filename = ParseUtil.decode(filename); |
| pathname = path.substring(0, i); |
| } else { |
| filename = ParseUtil.decode(path); |
| pathname = null; |
| } |
| } else { |
| pathname = path.substring(0, path.length() - 1); |
| filename = null; |
| } |
| if (pathname != null) { |
| fullpath = pathname + "/" + (filename != null ? filename : ""); |
| } else { |
| fullpath = filename; |
| } |
| } |
| |
| /* |
| * As part of RFC-1738 it is specified that the path should be |
| * interpreted as a series of FTP CWD commands. |
| * This is because, '/' is not necessarly the directory delimiter |
| * on every systems. |
| */ |
| private void cd(String path) throws FtpProtocolException, IOException { |
| if (path == null || path.isEmpty()) { |
| return; |
| } |
| if (path.indexOf('/') == -1) { |
| ftp.changeDirectory(ParseUtil.decode(path)); |
| return; |
| } |
| |
| StringTokenizer token = new StringTokenizer(path, "/"); |
| while (token.hasMoreTokens()) { |
| ftp.changeDirectory(ParseUtil.decode(token.nextToken())); |
| } |
| } |
| |
| /** |
| * Get the InputStream to retreive the remote file. It will issue the |
| * "get" (or "dir") command to the ftp server. |
| * |
| * @return the <code>InputStream</code> to the connection. |
| * |
| * @throws IOException if already opened for output |
| * @throws FtpProtocolException if errors occur during the transfert. |
| */ |
| @Override |
| public InputStream getInputStream() throws IOException { |
| if (!connected) { |
| connect(); |
| } |
| |
| if (http != null) { |
| return http.getInputStream(); |
| } |
| |
| if (os != null) { |
| throw new IOException("Already opened for output"); |
| } |
| |
| if (is != null) { |
| return is; |
| } |
| |
| MessageHeader msgh = new MessageHeader(); |
| |
| boolean isAdir = false; |
| try { |
| decodePath(url.getPath()); |
| if (filename == null || type == DIR) { |
| ftp.setAsciiType(); |
| cd(pathname); |
| if (filename == null) { |
| is = new FtpInputStream(ftp, ftp.list(null)); |
| } else { |
| is = new FtpInputStream(ftp, ftp.nameList(filename)); |
| } |
| } else { |
| if (type == ASCII) { |
| ftp.setAsciiType(); |
| } else { |
| ftp.setBinaryType(); |
| } |
| cd(pathname); |
| is = new FtpInputStream(ftp, ftp.getFileStream(filename)); |
| } |
| |
| /* Try to get the size of the file in bytes. If that is |
| successful, then create a MeteredStream. */ |
| try { |
| long l = ftp.getLastTransferSize(); |
| msgh.add("content-length", Long.toString(l)); |
| if (l > 0) { |
| |
| // Wrap input stream with MeteredStream to ensure read() will always return -1 |
| // at expected length. |
| |
| // Check if URL should be metered |
| boolean meteredInput = ProgressMonitor.getDefault().shouldMeterInput(url, "GET"); |
| ProgressSource pi = null; |
| |
| if (meteredInput) { |
| pi = new ProgressSource(url, "GET", l); |
| pi.beginTracking(); |
| } |
| |
| is = new MeteredStream(is, pi, l); |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| /* do nothing, since all we were doing was trying to |
| get the size in bytes of the file */ |
| } |
| |
| if (isAdir) { |
| msgh.add("content-type", "text/plain"); |
| msgh.add("access-type", "directory"); |
| } else { |
| msgh.add("access-type", "file"); |
| String ftype = guessContentTypeFromName(fullpath); |
| if (ftype == null && is.markSupported()) { |
| ftype = guessContentTypeFromStream(is); |
| } |
| if (ftype != null) { |
| msgh.add("content-type", ftype); |
| } |
| } |
| } catch (FileNotFoundException e) { |
| try { |
| cd(fullpath); |
| /* if that worked, then make a directory listing |
| and build an html stream with all the files in |
| the directory */ |
| ftp.setAsciiType(); |
| |
| is = new FtpInputStream(ftp, ftp.list(null)); |
| msgh.add("content-type", "text/plain"); |
| msgh.add("access-type", "directory"); |
| } catch (IOException ex) { |
| throw new FileNotFoundException(fullpath); |
| } catch (FtpProtocolException ex2) { |
| throw new FileNotFoundException(fullpath); |
| } |
| } catch (FtpProtocolException ftpe) { |
| throw new IOException(ftpe); |
| } |
| setProperties(msgh); |
| return is; |
| } |
| |
| /** |
| * Get the OutputStream to store the remote file. It will issue the |
| * "put" command to the ftp server. |
| * |
| * @return the <code>OutputStream</code> to the connection. |
| * |
| * @throws IOException if already opened for input or the URL |
| * points to a directory |
| * @throws FtpProtocolException if errors occur during the transfert. |
| */ |
| @Override |
| public OutputStream getOutputStream() throws IOException { |
| if (!connected) { |
| connect(); |
| } |
| |
| if (http != null) { |
| OutputStream out = http.getOutputStream(); |
| // getInputStream() is neccessary to force a writeRequests() |
| // on the http client. |
| http.getInputStream(); |
| return out; |
| } |
| |
| if (is != null) { |
| throw new IOException("Already opened for input"); |
| } |
| |
| if (os != null) { |
| return os; |
| } |
| |
| decodePath(url.getPath()); |
| if (filename == null || filename.length() == 0) { |
| throw new IOException("illegal filename for a PUT"); |
| } |
| try { |
| if (pathname != null) { |
| cd(pathname); |
| } |
| if (type == ASCII) { |
| ftp.setAsciiType(); |
| } else { |
| ftp.setBinaryType(); |
| } |
| os = new FtpOutputStream(ftp, ftp.putFileStream(filename, false)); |
| } catch (FtpProtocolException e) { |
| throw new IOException(e); |
| } |
| return os; |
| } |
| |
| String guessContentTypeFromFilename(String fname) { |
| return guessContentTypeFromName(fname); |
| } |
| |
| /** |
| * Gets the <code>Permission</code> associated with the host & port. |
| * |
| * @return The <code>Permission</code> object. |
| */ |
| @Override |
| public Permission getPermission() { |
| if (permission == null) { |
| int urlport = url.getPort(); |
| urlport = urlport < 0 ? FtpClient.defaultPort() : urlport; |
| String urlhost = this.host + ":" + urlport; |
| permission = new SocketPermission(urlhost, "connect"); |
| } |
| return permission; |
| } |
| |
| /** |
| * Sets the general request property. If a property with the key already |
| * exists, overwrite its value with the new value. |
| * |
| * @param key the keyword by which the request is known |
| * (e.g., "<code>accept</code>"). |
| * @param value the value associated with it. |
| * @throws IllegalStateException if already connected |
| * @see #getRequestProperty(java.lang.String) |
| */ |
| @Override |
| public void setRequestProperty(String key, String value) { |
| super.setRequestProperty(key, value); |
| if ("type".equals(key)) { |
| if ("i".equalsIgnoreCase(value)) { |
| type = BIN; |
| } else if ("a".equalsIgnoreCase(value)) { |
| type = ASCII; |
| } else if ("d".equalsIgnoreCase(value)) { |
| type = DIR; |
| } else { |
| throw new IllegalArgumentException( |
| "Value of '" + key + |
| "' request property was '" + value + |
| "' when it must be either 'i', 'a' or 'd'"); |
| } |
| } |
| } |
| |
| /** |
| * Returns the value of the named general request property for this |
| * connection. |
| * |
| * @param key the keyword by which the request is known (e.g., "accept"). |
| * @return the value of the named general request property for this |
| * connection. |
| * @throws IllegalStateException if already connected |
| * @see #setRequestProperty(java.lang.String, java.lang.String) |
| */ |
| @Override |
| public String getRequestProperty(String key) { |
| String value = super.getRequestProperty(key); |
| |
| if (value == null) { |
| if ("type".equals(key)) { |
| value = (type == ASCII ? "a" : type == DIR ? "d" : "i"); |
| } |
| } |
| |
| return value; |
| } |
| |
| @Override |
| public void setConnectTimeout(int timeout) { |
| if (timeout < 0) { |
| throw new IllegalArgumentException("timeouts can't be negative"); |
| } |
| connectTimeout = timeout; |
| } |
| |
| @Override |
| public int getConnectTimeout() { |
| return (connectTimeout < 0 ? 0 : connectTimeout); |
| } |
| |
| @Override |
| public void setReadTimeout(int timeout) { |
| if (timeout < 0) { |
| throw new IllegalArgumentException("timeouts can't be negative"); |
| } |
| readTimeout = timeout; |
| } |
| |
| @Override |
| public int getReadTimeout() { |
| return readTimeout < 0 ? 0 : readTimeout; |
| } |
| } |