From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- libjava/classpath/java/security/Security.java | 711 ++++++++++++++++++++++++++ 1 file changed, 711 insertions(+) create mode 100644 libjava/classpath/java/security/Security.java (limited to 'libjava/classpath/java/security/Security.java') diff --git a/libjava/classpath/java/security/Security.java b/libjava/classpath/java/security/Security.java new file mode 100644 index 000000000..6cd98b0fb --- /dev/null +++ b/libjava/classpath/java/security/Security.java @@ -0,0 +1,711 @@ +/* Security.java --- Java base security class implementation + Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005, 2006 + Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.security; + +import gnu.classpath.SystemProperties; + +import gnu.classpath.Configuration; +import gnu.classpath.VMStackWalker; + +import java.io.IOException; +import java.io.InputStream; +import java.net.URL; +import java.util.Collections; +import java.util.Enumeration; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Iterator; +import java.util.LinkedHashSet; +import java.util.Map; +import java.util.Properties; +import java.util.Set; +import java.util.Vector; + +/** + * This class centralizes all security properties and common security methods. + * One of its primary uses is to manage security providers. + * + * @author Mark Benvenuto (ivymccough@worldnet.att.net) + */ +public final class Security +{ + private static final String ALG_ALIAS = "Alg.Alias."; + + private static Vector providers = new Vector(); + private static Properties secprops = new Properties(); + + static + { + String base = SystemProperties.getProperty("gnu.classpath.home.url"); + String vendor = SystemProperties.getProperty("gnu.classpath.vm.shortname"); + + // Try VM specific security file + boolean loaded = loadProviders (base, vendor); + + // Append classpath standard provider if possible + if (!loadProviders (base, "classpath") + && !loaded + && providers.size() == 0) + { + if (Configuration.DEBUG) + { + /* No providers found and both security files failed to + * load properly. Give a warning in case of DEBUG is + * enabled. Could be done with java.util.logging later. + */ + System.err.println + ("WARNING: could not properly read security provider files:"); + System.err.println + (" " + base + "/security/" + vendor + + ".security"); + System.err.println + (" " + base + "/security/" + "classpath" + + ".security"); + System.err.println + (" Falling back to standard GNU security provider"); + } + // Note that this matches our classpath.security file. + providers.addElement (new gnu.java.security.provider.Gnu()); + providers.addElement(new gnu.javax.crypto.jce.GnuCrypto()); + providers.addElement(new gnu.javax.crypto.jce.GnuSasl()); + providers.addElement(new gnu.javax.net.ssl.provider.Jessie()); + providers.addElement(new gnu.javax.security.auth.callback.GnuCallbacks()); + } + } + // This class can't be instantiated. + private Security() + { + } + + /** + * Tries to load the vender specific security providers from the given base + * URL. Returns true if the resource could be read and completely parsed + * successfully, false otherwise. + */ + private static boolean loadProviders(String baseUrl, String vendor) + { + if (baseUrl == null || vendor == null) + return false; + + boolean result = true; + String secfilestr = baseUrl + "/security/" + vendor + ".security"; + try + { + InputStream fin = new URL(secfilestr).openStream(); + secprops.load(fin); + + int i = 1; + String name; + while ((name = secprops.getProperty("security.provider." + i)) != null) + { + Exception exception = null; + try + { + ClassLoader sys = ClassLoader.getSystemClassLoader(); + providers.addElement(Class.forName(name, true, sys).newInstance()); + } + catch (ClassNotFoundException x) + { + exception = x; + } + catch (InstantiationException x) + { + exception = x; + } + catch (IllegalAccessException x) + { + exception = x; + } + + if (exception != null) + { + System.err.println ("WARNING: Error loading security provider " + + name + ": " + exception); + result = false; + } + i++; + } + } + catch (IOException ignored) + { + result = false; + } + + return result; + } + + /** + * Returns the value associated to a designated property name for a given + * algorithm. + * + * @param algName + * the algorithm name. + * @param propName + * the name of the property to return. + * @return the value of the specified property or null if none + * found. + * @deprecated Use the provider-based and algorithm-independent + * {@link AlgorithmParameters} and {@link KeyFactory} engine + * classes instead. + */ + public static String getAlgorithmProperty(String algName, String propName) + { + if (algName == null || propName == null) + return null; + + String property = String.valueOf(propName) + "." + String.valueOf(algName); + Provider p; + for (Iterator i = providers.iterator(); i.hasNext(); ) + { + p = (Provider) i.next(); + for (Iterator j = p.keySet().iterator(); j.hasNext(); ) + { + String key = (String) j.next(); + if (key.equalsIgnoreCase(property)) + return p.getProperty(key); + } + } + return null; + } + + /** + * Inserts a new designated {@link Provider} at a designated (1-based) + * position in the current list of installed {@link Provider}s, + * + * @param provider + * the new {@link Provider} to add. + * @param position + * the position (starting from 1) of where to install + * provider. + * @return the actual position, in the list of installed Providers. Returns + * -1 if provider was laready in the + * list. The actual position may be different than the desired + * position. + * @throws SecurityException + * if a {@link SecurityManager} is installed and it disallows this + * operation. + * @see #getProvider(String) + * @see #removeProvider(String) + * @see SecurityPermission + */ + public static int insertProviderAt(Provider provider, int position) + { + SecurityManager sm = System.getSecurityManager(); + if (sm != null) + sm.checkSecurityAccess("insertProvider." + provider.getName()); + + position--; + int max = providers.size (); + for (int i = 0; i < max; i++) + { + if (((Provider) providers.elementAt(i)).getName().equals(provider.getName())) + return -1; + } + + if (position < 0) + position = 0; + if (position > max) + position = max; + + providers.insertElementAt(provider, position); + + return position + 1; + } + + /** + * Appends the designated new {@link Provider} to the current list of + * installed {@link Provider}s. + * + * @param provider + * the new {@link Provider} to append. + * @return the position (starting from 1) of provider in the + * current list of {@link Provider}s, or -1 if + * provider was already there. + * @throws SecurityException + * if a {@link SecurityManager} is installed and it disallows this + * operation. + * @see #getProvider(String) + * @see #removeProvider(String) + * @see SecurityPermission + */ + public static int addProvider(Provider provider) + { + return insertProviderAt (provider, providers.size () + 1); + } + + /** + * Removes an already installed {@link Provider}, given its name, from the + * current list of installed {@link Provider}s. + * + * @param name + * the name of an already installed {@link Provider} to remove. + * @throws SecurityException + * if a {@link SecurityManager} is installed and it disallows this + * operation. + * @see #getProvider(String) + * @see #addProvider(Provider) + */ + public static void removeProvider(String name) + { + SecurityManager sm = System.getSecurityManager(); + if (sm != null) + sm.checkSecurityAccess("removeProvider." + name); + + int max = providers.size (); + for (int i = 0; i < max; i++) + { + if (((Provider) providers.elementAt(i)).getName().equals(name)) + { + providers.remove(i); + break; + } + } + } + + /** + * Returns the current list of installed {@link Provider}s as an array + * ordered according to their installation preference order. + * + * @return an array of all the installed providers. + */ + public static Provider[] getProviders() + { + Provider[] array = new Provider[providers.size ()]; + providers.copyInto (array); + return array; + } + + /** + * Returns an already installed {@link Provider} given its name. + * + * @param name + * the name of an already installed {@link Provider}. + * @return the {@link Provider} known by name. Returns + * null if the current list of {@link Provider}s does + * not include one named name. + * @see #removeProvider(String) + * @see #addProvider(Provider) + */ + public static Provider getProvider(String name) + { + if (name == null) + return null; + else + { + name = name.trim(); + if (name.length() == 0) + return null; + } + Provider p; + int max = providers.size (); + for (int i = 0; i < max; i++) + { + p = (Provider) providers.elementAt(i); + if (p.getName().equals(name)) + return p; + } + return null; + } + + /** + * Returns the value associated with a Security propery. + * + * @param key + * the key of the property to fetch. + * @return the value of the Security property associated with + * key. Returns null if no such property + * was found. + * @throws SecurityException + * if a {@link SecurityManager} is installed and it disallows this + * operation. + * @see #setProperty(String, String) + * @see SecurityPermission + */ + public static String getProperty(String key) + { + // XXX To prevent infinite recursion when the SecurityManager calls us, + // don't do a security check if the caller is trusted (by virtue of having + // been loaded by the bootstrap class loader). + SecurityManager sm = System.getSecurityManager(); + if (sm != null && VMStackWalker.getCallingClassLoader() != null) + sm.checkSecurityAccess("getProperty." + key); + + return secprops.getProperty(key); + } + + /** + * Sets or changes a designated Security property to a designated value. + * + * @param key + * the name of the property to set. + * @param datum + * the new value of the property. + * @throws SecurityException + * if a {@link SecurityManager} is installed and it disallows this + * operation. + * @see #getProperty(String) + * @see SecurityPermission + */ + public static void setProperty(String key, String datum) + { + SecurityManager sm = System.getSecurityManager(); + if (sm != null) + sm.checkSecurityAccess("setProperty." + key); + + if (datum == null) + secprops.remove(key); + else + secprops.put(key, datum); + } + + /** + * For a given service (e.g. Signature, MessageDigest, etc...) this + * method returns the {@link Set} of all available algorithm names (instances + * of {@link String}, from all currently installed {@link Provider}s. + * + * @param serviceName + * the case-insensitive name of a service (e.g. Signature, + * MessageDigest, etc). + * @return a {@link Set} of {@link String}s containing the names of all + * algorithm names provided by all of the currently installed + * {@link Provider}s. + * @since 1.4 + */ + public static Set getAlgorithms(String serviceName) + { + HashSet result = new HashSet(); + if (serviceName == null || serviceName.length() == 0) + return result; + + serviceName = serviceName.trim(); + if (serviceName.length() == 0) + return result; + + serviceName = serviceName.toUpperCase()+"."; + Provider[] providers = getProviders(); + int ndx; + for (int i = 0; i < providers.length; i++) + for (Enumeration e = providers[i].propertyNames(); e.hasMoreElements(); ) + { + String service = ((String) e.nextElement()).trim(); + if (service.toUpperCase().startsWith(serviceName)) + { + service = service.substring(serviceName.length()).trim(); + ndx = service.indexOf(' '); // get rid of attributes + if (ndx != -1) + service = service.substring(0, ndx); + result.add(service); + } + } + return Collections.unmodifiableSet(result); + } + + /** + * Returns an array of currently installed {@link Provider}s, ordered + * according to their installation preference order, which satisfy a given + * selection criterion. + * + *

This implementation recognizes a selection criterion written in + * one of two following forms:

+ * + *
    + *
  • <crypto_service>.<algorithm_or_type>: Where + * crypto_service is a case-insensitive string, similar to what has + * been described in the {@link #getAlgorithms(String)} method, and + * algorithm_or_type is a known case-insensitive name of an + * Algorithm, or one of its aliases. + * + *

    For example, "CertificateFactory.X.509" would return all the installed + * {@link Provider}s which provide a CertificateFactory + * implementation of X.509.

    • + * + *
  • <crypto_service>.<algorithm_or_type> <attribute_name>:<value>: + * Where crypto_service is a case-insensitive string, similar to what + * has been described in the {@link #getAlgorithms(String)} method, + * algorithm_or_type is a case-insensitive known name of an Algorithm + * or one of its aliases, attribute_name is a case-insensitive + * property name with no whitespace characters, and no dots, in-between, and + * value is a {@link String} with no whitespace characters in-between. + * + *

    For example, "Signature.Sha1WithDSS KeySize:1024" would return all the + * installed {@link Provider}s which declared their ability to provide + * Signature services, using the Sha1WithDSS algorithm with + * key sizes of 1024.

    • + *
+ * + * @param filter + * the selection criterion for selecting among the installed + * {@link Provider}s. + * @return all the installed {@link Provider}s which satisfy the selection + * criterion. Returns null if no installed + * {@link Provider}s were found which satisfy the selection + * criterion. Returns ALL installed {@link Provider}s if + * filter is null or is an empty string. + * @throws InvalidParameterException + * if an exception occurs while parsing the filter. + * @see #getProviders(Map) + */ + public static Provider[] getProviders(String filter) + { + if (providers == null || providers.isEmpty()) + return null; + + if (filter == null || filter.length() == 0) + return getProviders(); + + HashMap map = new HashMap(1); + int i = filter.indexOf(':'); + if (i == -1) // . + map.put(filter, ""); + else // . : + map.put(filter.substring(0, i), filter.substring(i+1)); + + return getProviders(map); + } + + /** + * Returns an array of currently installed {@link Provider}s which satisfy a + * set of selection criteria. + * + *

The selection criteria are defined in a {@link Map} where each + * element specifies a selection querry. The Keys in this + * {@link Map} must be in one of the two following forms:

+ * + *
    + *
  • <crypto_service>.<algorithm_or_type>: Where + * crypto_service is a case-insensitive string, similar to what has + * been described in the {@link #getAlgorithms(String)} method, and + * algorithm_or_type is a case-insensitive known name of an + * Algorithm, or one of its aliases. The value of the entry in the + * {@link Map} for such a Key MUST be the empty string. + * {@link Provider}s which provide an implementation for the designated + * service algorithm are included in the result.
    • + * + *
  • <crypto_service>.<algorithm_or_type> <attribute_name>: + * Where crypto_service is a case-insensitive string, similar to what + * has been described in the {@link #getAlgorithms(String)} method, + * algorithm_or_type is a case-insensitive known name of an Algorithm + * or one of its aliases, and attribute_name is a case-insensitive + * property name with no whitespace characters, and no dots, in-between. The + * value of the entry in this {@link Map} for such a Key MUST + * NOT be null or an empty string. {@link Provider}s which + * declare the designated attribute_name and value for the + * designated service algorithm are included in the result.
    • + *
+ * + * @param filter + * a {@link Map} of selection querries. + * @return all currently installed {@link Provider}s which satisfy ALL the + * selection criteria defined in filter. + * Returns ALL installed {@link Provider}s if filter + * is null or empty. + * @throws InvalidParameterException + * if an exception is encountered while parsing the syntax of the + * {@link Map}'s keys. + * @see #getProviders(String) + */ + public static Provider[] getProviders(Map filter) + { + if (providers == null || providers.isEmpty()) + return null; + + if (filter == null) + return getProviders(); + + Set querries = filter.keySet(); + if (querries == null || querries.isEmpty()) + return getProviders(); + + LinkedHashSet result = new LinkedHashSet(providers); // assume all + int dot, ws; + String querry, service, algorithm, attribute, value; + LinkedHashSet serviceProviders = new LinkedHashSet(); // preserve insertion order + for (Iterator i = querries.iterator(); i.hasNext(); ) + { + querry = (String) i.next(); + if (querry == null) // all providers + continue; + + querry = querry.trim(); + if (querry.length() == 0) // all providers + continue; + + dot = querry.indexOf('.'); + if (dot == -1) // syntax error + throw new InvalidParameterException( + "missing dot in '" + String.valueOf(querry)+"'"); + + value = filter.get(querry); + // deconstruct querry into [service, algorithm, attribute] + if (value == null || value.trim().length() == 0) // . + { + value = null; + attribute = null; + service = querry.substring(0, dot).trim(); + algorithm = querry.substring(dot+1).trim(); + } + else // . + { + ws = querry.indexOf(' '); + if (ws == -1) + throw new InvalidParameterException( + "value (" + String.valueOf(value) + + ") is not empty, but querry (" + String.valueOf(querry) + + ") is missing at least one space character"); + value = value.trim(); + attribute = querry.substring(ws+1).trim(); + // was the dot in the attribute? + if (attribute.indexOf('.') != -1) + throw new InvalidParameterException( + "attribute_name (" + String.valueOf(attribute) + + ") in querry (" + String.valueOf(querry) + ") contains a dot"); + + querry = querry.substring(0, ws).trim(); + service = querry.substring(0, dot).trim(); + algorithm = querry.substring(dot+1).trim(); + } + + // service and algorithm must not be empty + if (service.length() == 0) + throw new InvalidParameterException( + " in querry (" + String.valueOf(querry) + + ") is empty"); + + if (algorithm.length() == 0) + throw new InvalidParameterException( + " in querry (" + String.valueOf(querry) + + ") is empty"); + + selectProviders(service, algorithm, attribute, value, result, serviceProviders); + result.retainAll(serviceProviders); // eval next retaining found providers + if (result.isEmpty()) // no point continuing + break; + } + + if (result.isEmpty()) + return null; + + return (Provider[]) result.toArray(new Provider[result.size()]); + } + + private static void selectProviders(String svc, String algo, String attr, + String val, LinkedHashSet providerSet, + LinkedHashSet result) + { + result.clear(); // ensure we start with an empty result set + for (Iterator i = providerSet.iterator(); i.hasNext(); ) + { + Provider p = (Provider) i.next(); + if (provides(p, svc, algo, attr, val)) + result.add(p); + } + } + + private static boolean provides(Provider p, String svc, String algo, + String attr, String val) + { + Iterator it; + String serviceDotAlgorithm = null; + String key = null; + String realVal; + boolean found = false; + // if . is in the set then so is . + // but it may be stored under an alias . resolve + outer: for (int r = 0; r < 3; r++) // guard against circularity + { + serviceDotAlgorithm = (svc+"."+String.valueOf(algo)).trim(); + for (it = p.keySet().iterator(); it.hasNext(); ) + { + key = (String) it.next(); + if (key.equalsIgnoreCase(serviceDotAlgorithm)) // eureka + { + found = true; + break outer; + } + // it may be there but as an alias + if (key.equalsIgnoreCase(ALG_ALIAS + serviceDotAlgorithm)) + { + algo = p.getProperty(key); + continue outer; + } + // else continue inner + } + } + + if (!found) + return false; + + // found a candidate for the querry. do we have an attr to match? + if (val == null) // . querry + return true; + + // . ; find the key entry that match + String realAttr; + int limit = serviceDotAlgorithm.length() + 1; + for (it = p.keySet().iterator(); it.hasNext(); ) + { + key = (String) it.next(); + if (key.length() <= limit) + continue; + + if (key.substring(0, limit).equalsIgnoreCase(serviceDotAlgorithm+" ")) + { + realAttr = key.substring(limit).trim(); + if (! realAttr.equalsIgnoreCase(attr)) + continue; + + // eveything matches so far. do the value + realVal = p.getProperty(key); + if (realVal == null) + return false; + + realVal = realVal.trim(); + // is it a string value? + if (val.equalsIgnoreCase(realVal)) + return true; + + // assume value is a number. cehck for greater-than-or-equal + return (Integer.parseInt(val) >= Integer.parseInt(realVal)); + } + } + + return false; + } +} -- cgit v1.2.3