Showing the changes to java/pkg/sun/awt/image/URLImageSource.java (1 of 18352 files). Show all
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| 1 | /* | ||
| 2 | * Copyright (c) 1995, 2006, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.awt.image; | ||
| 27 | |||
| 28 | import java.io.InputStream; | ||
| 29 | import java.io.IOException; | ||
| 30 | import java.net.HttpURLConnection; | ||
| 31 | import java.net.URL; | ||
| 32 | import java.net.URLConnection; | ||
| 33 | import java.net.MalformedURLException; | ||
| 34 | |||
| 35 | public class URLImageSource extends InputStreamImageSource { | ||
| 36 | URL url; | ||
| 37 | URLConnection conn; | ||
| 38 | String actualHost; | ||
| 39 | int actualPort; | ||
| 40 | |||
| 41 | public URLImageSource(URL u) { | ||
| 42 | SecurityManager sm = System.getSecurityManager(); | ||
| 43 | if (sm != null) { | ||
| 44 | try { | ||
| 45 | java.security.Permission perm = | ||
| 46 | u.openConnection().getPermission(); | ||
| 47 | if (perm != null) { | ||
| 48 | try { | ||
| 49 | sm.checkPermission(perm); | ||
| 50 | } catch (SecurityException se) { | ||
| 51 | // fallback to checkRead/checkConnect for pre 1.2 | ||
| 52 | // security managers | ||
| 53 | if ((perm instanceof java.io.FilePermission) && | ||
| 54 | perm.getActions().indexOf("read") != -1) { | ||
| 55 | sm.checkRead(perm.getName()); | ||
| 56 | } else if ((perm instanceof | ||
| 57 | java.net.SocketPermission) && | ||
| 58 | perm.getActions().indexOf("connect") != -1) { | ||
| 59 | sm.checkConnect(u.getHost(), u.getPort()); | ||
| 60 | } else { | ||
| 61 | throw se; | ||
| 62 | } | ||
| 63 | } | ||
| 64 | } | ||
| 65 | } catch (java.io.IOException ioe) { | ||
| 66 | sm.checkConnect(u.getHost(), u.getPort()); | ||
| 67 | } | ||
| 68 | } | ||
| 69 | this.url = u; | ||
| 70 | |||
| 71 | } | ||
| 72 | |||
| 73 | public URLImageSource(String href) throws MalformedURLException { | ||
| 74 | this(new URL(null, href)); | ||
| 75 | } | ||
| 76 | |||
| 77 | public URLImageSource(URL u, URLConnection uc) { | ||
| 78 | this(u); | ||
| 79 | conn = uc; | ||
| 80 | } | ||
| 81 | |||
| 82 | public URLImageSource(URLConnection uc) { | ||
| 83 | this(uc.getURL(), uc); | ||
| 84 | } | ||
| 85 | |||
| 86 | final boolean checkSecurity(Object context, boolean quiet) { | ||
| 87 | // If actualHost is not null, then the host/port parameters that | ||
| 88 | // the image was actually fetched from were different than the | ||
| 89 | // host/port parameters the original URL specified for at least | ||
| 90 | // one of the download attempts. The original URL security was | ||
| 91 | // checked when the applet got a handle to the image, so we only | ||
| 92 | // need to check for the real host/port. | ||
| 93 | if (actualHost != null) { | ||
| 94 | try { | ||
| 95 | SecurityManager security = System.getSecurityManager(); | ||
| 96 | if (security != null) { | ||
| 97 | security.checkConnect(actualHost, actualPort, context); | ||
| 98 | } | ||
| 99 | } catch (SecurityException e) { | ||
| 100 | if (!quiet) { | ||
| 101 | throw e; | ||
| 102 | } | ||
| 103 | return false; | ||
| 104 | } | ||
| 105 | } | ||
| 106 | return true; | ||
| 107 | } | ||
| 108 | |||
| 109 | private synchronized URLConnection getConnection() throws IOException { | ||
| 110 | URLConnection c; | ||
| 111 | if (conn != null) { | ||
| 112 | c = conn; | ||
| 113 | conn = null; | ||
| 114 | } else { | ||
| 115 | c = url.openConnection(); | ||
| 116 | } | ||
| 117 | return c; | ||
| 118 | } | ||
| 119 | |||
| 120 | protected ImageDecoder getDecoder() { | ||
| 121 | InputStream is = null; | ||
| 122 | String type = null; | ||
| 123 | URLConnection c = null; | ||
| 124 | try { | ||
| 125 | c = getConnection(); | ||
| 126 | is = c.getInputStream(); | ||
| 127 | type = c.getContentType(); | ||
| 128 | URL u = c.getURL(); | ||
| 129 | if (u != url && (!u.getHost().equals(url.getHost()) || | ||
| 130 | u.getPort() != url.getPort())) | ||
| 131 | { | ||
| 132 | // The image is allowed to come from either the host/port | ||
| 133 | // listed in the original URL, or it can come from one other | ||
| 134 | // host/port that the URL is redirected to. More than that | ||
| 135 | // and we give up and just throw a SecurityException. | ||
| 136 | if (actualHost != null && (!actualHost.equals(u.getHost()) || | ||
| 137 | actualPort != u.getPort())) | ||
| 138 | { | ||
| 139 | throw new SecurityException("image moved!"); | ||
| 140 | } | ||
| 141 | actualHost = u.getHost(); | ||
| 142 | actualPort = u.getPort(); | ||
| 143 | } | ||
| 144 | } catch (IOException e) { | ||
| 145 | if (is != null) { | ||
| 146 | try { | ||
| 147 | is.close(); | ||
| 148 | } catch (IOException e2) { | ||
| 149 | } | ||
| 150 | } else if (c instanceof HttpURLConnection) { | ||
| 151 | ((HttpURLConnection)c).disconnect(); | ||
| 152 | } | ||
| 153 | return null; | ||
| 154 | } | ||
| 155 | |||
| 156 | ImageDecoder id = decoderForType(is, type); | ||
| 157 | if (id == null) { | ||
| 158 | id = getDecoder(is); | ||
| 159 | } | ||
| 160 | |||
| 161 | if (id == null) { | ||
| 162 | // probably, no appropriate decoder | ||
| 163 | if (is != null) { | ||
| 164 | try { | ||
| 165 | is.close(); | ||
| 166 | } catch (IOException e) { | ||
| 167 | } | ||
| 168 | } else if (c instanceof HttpURLConnection) { | ||
| 169 | ((HttpURLConnection)c).disconnect(); | ||
| 170 | } | ||
| 171 | } | ||
| 172 | return id; | ||
| 173 | } | ||
| 174 | } | ||