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. --- .../security/auth/login/ConfigFileParser.java | 346 +++++++++++++++ .../security/auth/login/ConfigFileTokenizer.java | 246 +++++++++++ .../security/auth/login/GnuConfiguration.java | 466 +++++++++++++++++++++ 3 files changed, 1058 insertions(+) create mode 100644 libjava/classpath/gnu/javax/security/auth/login/ConfigFileParser.java create mode 100644 libjava/classpath/gnu/javax/security/auth/login/ConfigFileTokenizer.java create mode 100644 libjava/classpath/gnu/javax/security/auth/login/GnuConfiguration.java (limited to 'libjava/classpath/gnu/javax/security/auth/login') diff --git a/libjava/classpath/gnu/javax/security/auth/login/ConfigFileParser.java b/libjava/classpath/gnu/javax/security/auth/login/ConfigFileParser.java new file mode 100644 index 000000000..5c4c4261f --- /dev/null +++ b/libjava/classpath/gnu/javax/security/auth/login/ConfigFileParser.java @@ -0,0 +1,346 @@ +/* ConfigFileParser.java -- JAAS Login Configuration default syntax parser + Copyright (C) 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 gnu.javax.security.auth.login; + +import gnu.java.security.Configuration; + +import java.io.IOException; +import java.io.Reader; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.logging.Logger; + +import javax.security.auth.login.AppConfigurationEntry; + +/** + * A parser that knows how to interpret JAAS Login Module Configuration files + * written in the default syntax which is interpreted as adhering to + * the following grammar: + * + * 
+ *   CONFIG              ::= APP_OR_OTHER_ENTRY+
+ *   APP_OR_OTHER_ENTRY  ::= APP_NAME_OR_OTHER JAAS_CONFIG_BLOCK
+ *   APP_NAME_OR_OTHER   ::= APP_NAME
+ *                         | 'other'
+ *   JAAS_CONFIG_BLOCK   ::= '{' (LOGIN_MODULE_ENTRY ';')+ '}' ';'
+ *   LOGIN_MODULE_ENTRY  ::= MODULE_CLASS FLAG MODULE_OPTION* ';'
+ *   FLAG                ::= 'required'
+ *                         | 'requisite'
+ *                         | 'sufficient'
+ *                         | 'optional'
+ *   MODULE_OPTION       ::= PARAM_NAME '=' PARAM_VALUE
+ *
+ *   APP_NAME     ::= JAVA_IDENTIFIER
+ *   MODULE_CLASS ::= JAVA_IDENTIFIER ('.' JAVA_IDENTIFIER)*
+ *   PARAM_NAME   ::= STRING
+ *   PARAM_VALUE  ::= '"' STRING '"' | ''' STRING ''' | STRING
+ *
+ * + *

This parser handles UTF-8 entities when used as APP_NAME and PARAM_VALUE. + * It also checks for the use of Java identifiers used in MODULE_CLASS, thus + * minimizing the risks of having {@link java.lang.ClassCastException}s thrown + * at runtime due to syntactically invalid names.

+ * + *

In the above context, a JAVA_IDENTIFIER is a sequence of tokens, + * separated by the character '.'. Each of these tokens obeys the following:

+ * + *
    + *
  1. its first character yields true when used as an input to + * the {@link java.lang.Character#isJavaIdentifierStart(char)}, and
    2. + *
  2. all remaining characters, yield true when used as an + * input to {@link java.lang.Character#isJavaIdentifierPart(char)}.
    3. + *
+ */ +public final class ConfigFileParser +{ + private static final Logger log = Logger.getLogger(ConfigFileParser.class.getName()); + private ConfigFileTokenizer cft; + private Map map = new HashMap(); + + // default 0-arguments constructor + + /** + * Returns the parse result as a {@link Map} where the keys are application + * names, and the entries are {@link List}s of {@link AppConfigurationEntry} + * entries, one for each login module entry, in the order they were + * encountered, for that application name in the just parsed configuration + * file. + */ + public Map getLoginModulesMap() + { + return map; + } + + /** + * Parses the {@link Reader}'s contents assuming it is in the default + * syntax. + * + * @param r the {@link Reader} whose contents are assumed to be a JAAS Login + * Configuration Module file written in the default syntax. + * @throws IOException if an exception occurs while parsing the input. + */ + public void parse(Reader r) throws IOException + { + initParser(r); + + while (parseAppOrOtherEntry()) + { + /* do nothing */ + } + } + + private void initParser(Reader r) throws IOException + { + map.clear(); + + cft = new ConfigFileTokenizer(r); + } + + /** + * @return true if an APP_OR_OTHER_ENTRY was correctly parsed. + * Returns false otherwise. + * @throws IOException if an exception occurs while parsing the input. + */ + private boolean parseAppOrOtherEntry() throws IOException + { + int c = cft.nextToken(); + if (c == ConfigFileTokenizer.TT_EOF) + return false; + + if (c != ConfigFileTokenizer.TT_WORD) + { + cft.pushBack(); + return false; + } + + String appName = cft.sval; + if (Configuration.DEBUG) + log.fine("APP_NAME_OR_OTHER = " + appName); + if (cft.nextToken() != '{') + abort("Missing '{' after APP_NAME_OR_OTHER"); + + List lmis = new ArrayList(); + while (parseACE(lmis)) + { + /* do nothing */ + } + + c = cft.nextToken(); + if (c != '}') + abort("Was expecting '}' but found " + (char) c); + + c = cft.nextToken(); + if (c != ';') + abort("Was expecting ';' but found " + (char) c); + + List listOfACEs = (List) map.get(appName); + if (listOfACEs == null) + { + listOfACEs = new ArrayList(); + map.put(appName, listOfACEs); + } + listOfACEs.addAll(lmis); + return !appName.equalsIgnoreCase("other"); + } + + /** + * @return true if a LOGIN_MODULE_ENTRY was correctly parsed. + * Returns false otherwise. + * @throws IOException if an exception occurs while parsing the input. + */ + private boolean parseACE(List listOfACEs) throws IOException + { + int c = cft.nextToken(); + if (c != ConfigFileTokenizer.TT_WORD) + { + cft.pushBack(); + return false; + } + + String clazz = validateClassName(cft.sval); + if (Configuration.DEBUG) + log.fine("MODULE_CLASS = " + clazz); + + if (cft.nextToken() != ConfigFileTokenizer.TT_WORD) + abort("Was expecting FLAG but found none"); + + String flag = cft.sval; + if (Configuration.DEBUG) + log.fine("DEBUG: FLAG = " + flag); + AppConfigurationEntry.LoginModuleControlFlag f = null; + if (flag.equalsIgnoreCase("required")) + f = AppConfigurationEntry.LoginModuleControlFlag.REQUIRED; + else if (flag.equalsIgnoreCase("requisite")) + f = AppConfigurationEntry.LoginModuleControlFlag.REQUISITE; + else if (flag.equalsIgnoreCase("sufficient")) + f = AppConfigurationEntry.LoginModuleControlFlag.SUFFICIENT; + else if (flag.equalsIgnoreCase("optional")) + f = AppConfigurationEntry.LoginModuleControlFlag.OPTIONAL; + else + abort("Unknown Flag: " + flag); + + Map options = new HashMap(); + String paramName, paramValue; + c = cft.nextToken(); + while (c != ';') + { + if (c != ConfigFileTokenizer.TT_WORD) + abort("Was expecting PARAM_NAME but got '" + ((char) c) + "'"); + + paramName = cft.sval; + if (Configuration.DEBUG) + log.fine("PARAM_NAME = " + paramName); + if (cft.nextToken() != '=') + abort("Missing '=' after PARAM_NAME"); + + c = cft.nextToken(); + if (c != '"' && c != '\'') + { + if (Configuration.DEBUG) + log.fine("Was expecting a quoted string but got no quote character." + + " Assume unquoted string"); + } + paramValue = expandParamValue(cft.sval); + if (Configuration.DEBUG) + log.fine("PARAM_VALUE = " + paramValue); + options.put(paramName, paramValue); + + c = cft.nextToken(); + } + AppConfigurationEntry ace = new AppConfigurationEntry(clazz, f, options); + if (Configuration.DEBUG) + log.fine("LOGIN_MODULE_ENTRY = " + ace); + listOfACEs.add(ace); + return true; + } + + private void abort(String m) throws IOException + { + if (Configuration.DEBUG) + { + log.fine(m); + log.fine("Map (so far) = " + String.valueOf(map)); + } + throw new IOException(m); + } + + private String validateClassName(String cn) throws IOException + { + if (cn.startsWith(".") || cn.endsWith(".")) + abort("MODULE_CLASS MUST NOT start or end with a '.'"); + + String[] tokens = cn.split("\\."); + for (int i = 0; i < tokens.length; i++) + { + String t = tokens[i]; + if (! Character.isJavaIdentifierStart(t.charAt(0))) + abort("Class name [" + cn + + "] contains an invalid sub-package identifier: " + t); + + // we dont check the rest of the characters for isJavaIdentifierPart() + // because that's what the tokenizer does. + } + + return cn; + } + + /** + * The documentation of the {@link javax.security.auth.login.Configuration} + * states that: "...If a String in the form, ${system.property}, occurs in + * the value, it will be expanded to the value of the system property.". + * This method ensures this is the case. If such a string can not be expanded + * then it is left AS IS, assuming the LoginModule knows what to do with it. + * + *

IMPORTANT: This implementation DOES NOT handle embedded ${} + * constructs. + * + * @param s the raw parameter value, incl. eventually strings of the form + * ${system.property}. + * @return the input string with every occurence of + * ${system.property} replaced with the value of the + * corresponding System property at the time of this method invocation. If + * the string is not a known System property name, then the complete sequence + * (incl. the ${} characters are passed AS IS. + */ + private String expandParamValue(String s) + { + String result = s; + try + { + int searchNdx = 0; + while (searchNdx < result.length()) + { + int i = s.indexOf("${", searchNdx); + if (i == -1) + break; + + int j = s.indexOf("}", i + 2); + if (j == -1) + { + if (Configuration.DEBUG) + log.fine("Found a ${ prefix with no } suffix. Ignore"); + break; + } + + String sysPropName = s.substring(i + 2, j); + if (Configuration.DEBUG) + log.fine("Found a reference to System property " + sysPropName); + String sysPropValue = System.getProperty(sysPropName); + if (Configuration.DEBUG) + log.fine("Resolved " + sysPropName + " to '" + sysPropValue + "'"); + if (sysPropValue != null) + { + result = s.substring(0, i) + sysPropValue + s.substring(j + 1); + searchNdx = i + sysPropValue.length(); + } + else + searchNdx = j + 1; + } + } + catch (Exception x) + { + if (Configuration.DEBUG) + log.fine("Exception (ignored) while expanding " + s + ": " + x); + } + + return result; + } +} diff --git a/libjava/classpath/gnu/javax/security/auth/login/ConfigFileTokenizer.java b/libjava/classpath/gnu/javax/security/auth/login/ConfigFileTokenizer.java new file mode 100644 index 000000000..fc35bf772 --- /dev/null +++ b/libjava/classpath/gnu/javax/security/auth/login/ConfigFileTokenizer.java @@ -0,0 +1,246 @@ +/* ConfigFileTokenizer.java -- JAAS Login Configuration default syntax tokenizer + Copyright (C) 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 gnu.javax.security.auth.login; + +import gnu.java.lang.CPStringBuilder; + +import gnu.java.security.Configuration; + +import java.io.BufferedReader; +import java.io.IOException; +import java.io.Reader; +import java.util.logging.Logger; + +/** + * A UTF-8 friendly, JAAS Login Module Configuration file tokenizer written in + * the deault syntax. This class emulates, to a certain extent, the behavior of + * a {@link java.io.StreamTokenizer} instance st, when set as + * follows: + * + * 

+ *  st.resetSyntax();
+ *  st.lowerCaseMode(false);
+ *  st.slashSlashComments(true);
+ *  st.slashStarComments(true);
+ *  st.eolIsSignificant(false);
+ *  st.wordChars('_', '_');
+ *  st.wordChars('$', '$');
+ *  st.wordChars('A', 'Z');
+ *  st.wordChars('a', 'z');
+ *  st.wordChars('0', '9');
+ *  st.wordChars('.', '.');
+ *  st.whitespaceChars(' ', ' ');
+ *  st.whitespaceChars('\t', '\t');
+ *  st.whitespaceChars('\f', '\f');
+ *  st.whitespaceChars('\r', '\r');
+ *  st.whitespaceChars('\n', '\n');
+ *  st.quoteChar('"');
+ *  st.quoteChar('\'');
+ *
+ * + *

The most important (negative) difference with a + * {@link java.io.StreamTokenizer} is that this tokenizer does not properly + * handle C++ and Java // style comments in the middle of the line. It only + * ignores them if/when found at the start of the line.

+ */ +public class ConfigFileTokenizer +{ + private static final Logger log = Logger.getLogger(ConfigFileParser.class.getName()); + /** A constant indicating that the end of the stream has been read. */ + public static final int TT_EOF = -1; + /** A constant indicating that a word token has been read. */ + public static final int TT_WORD = -3; + /** A constant indicating that no tokens have been read yet. */ + private static final int TT_NONE = -4; + + public String sval; + public int ttype; + + private BufferedReader br; + boolean initialised; + private CPStringBuilder sb; + private int sbNdx; + + // Constructor(s) + // -------------------------------------------------------------------------- + + /** Trivial constructor. */ + ConfigFileTokenizer(Reader r) + { + super(); + + br = r instanceof BufferedReader ? (BufferedReader) r : new BufferedReader(r); + initialised = false; + } + + // Class methods + // -------------------------------------------------------------------------- + + // Instance methods + // -------------------------------------------------------------------------- + + public int nextToken() throws IOException + { + if (!initialised) + init(); + + if (sbNdx >= sb.length()) + return TT_EOF; + + skipWhitespace(); + + if (sbNdx >= sb.length()) + return TT_EOF; + + int endNdx; + if (Character.isJavaIdentifierPart(sb.charAt(sbNdx))) + { + endNdx = sbNdx + 1; + while (Character.isJavaIdentifierPart(sb.charAt(endNdx)) + || sb.charAt(endNdx) == '.') + endNdx++; + + ttype = TT_WORD; + sval = sb.substring(sbNdx, endNdx); + sbNdx = endNdx; + return ttype; + } + + int c = sb.charAt(sbNdx); + if (c == '{' || c == '}' || c == ';' || c == '=') + { + ttype = c; + sbNdx++; + return ttype; + } + + if (c == '"' || c == '\'') + { + ttype = c; + String quote = sb.substring(sbNdx, sbNdx + 1); + int i = sbNdx + 1; + while (true) + { + // find a candidate + endNdx = sb.indexOf(quote, i); + if (endNdx == -1) + abort("Missing closing quote: " + quote); + + // found one; is it escaped? + if (sb.charAt(endNdx - 1) != '\\') + break; + + i++; + continue; + } + + endNdx++; + sval = sb.substring(sbNdx, endNdx); + sbNdx = endNdx; + return ttype; + } + + abort("Unknown character: " + sb.charAt(sbNdx)); + return Integer.MIN_VALUE; + } + + public void pushBack() + { + sbNdx -= ttype != TT_WORD ? 1 : sval.length(); + } + + private void init() throws IOException + { + sb = new CPStringBuilder(); + String line; + while ((line = br.readLine()) != null) + { + line = line.trim(); + if (line.length() == 0) + continue; + + if (line.startsWith("#") || line.startsWith("//")) + continue; + + sb.append(line).append(" "); + } + + sbNdx = 0; + sval = null; + ttype = TT_NONE; + + initialised = true; + } + + private void skipWhitespace() throws IOException + { + int endNdx; + while (sbNdx < sb.length()) + if (Character.isWhitespace(sb.charAt(sbNdx))) + { + sbNdx++; + while (sbNdx < sb.length() && Character.isWhitespace(sb.charAt(sbNdx))) + sbNdx++; + + continue; + } + else if (sb.charAt(sbNdx) == '/' && sb.charAt(sbNdx + 1) == '*') + { + endNdx = sb.indexOf("*/", sbNdx + 2); + if (endNdx == -1) + abort("Missing closing */ sequence"); + + sbNdx = endNdx + 2; + continue; + } + else + break; + } + + private void abort(String m) throws IOException + { + if (Configuration.DEBUG) + { + log.fine(m); + log.fine("sb = " + sb); + log.fine("sbNdx = " + sbNdx); + } + throw new IOException(m); + } +} diff --git a/libjava/classpath/gnu/javax/security/auth/login/GnuConfiguration.java b/libjava/classpath/gnu/javax/security/auth/login/GnuConfiguration.java new file mode 100644 index 000000000..20d8f3afd --- /dev/null +++ b/libjava/classpath/gnu/javax/security/auth/login/GnuConfiguration.java @@ -0,0 +1,466 @@ +/* GnuConfiguration.java -- GNU Classpath implementation of JAAS Configuration + Copyright (C) 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 gnu.javax.security.auth.login; + +import java.io.File; +import java.io.FileInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.InputStreamReader; +import java.net.MalformedURLException; +import java.net.URL; +import java.security.Security; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.logging.Logger; + +import javax.security.auth.AuthPermission; +import javax.security.auth.login.AppConfigurationEntry; +import javax.security.auth.login.Configuration; + +/** + * An implementation of the {@link Configuration} class which interprets JAAS + * Login Configuration files written in the default syntax described in + * the publicly available documentation of that class. A more formal definition + * of this syntax is as follows: + * + * 
+ *   CONFIG              ::= APP_OR_OTHER_ENTRY+
+ *   APP_OR_OTHER_ENTRY  ::= APP_NAME_OR_OTHER JAAS_CONFIG_BLOCK
+ *   APP_NAME_OR_OTHER   ::= APP_NAME
+ *                         | 'other'
+ *   JAAS_CONFIG_BLOCK   ::= '{' (LOGIN_MODULE_ENTRY ';')+ '}' ';'
+ *   LOGIN_MODULE_ENTRY  ::= MODULE_CLASS FLAG MODULE_OPTION* ';'
+ *   FLAG                ::= 'required'
+ *                         | 'requisite'
+ *                         | 'sufficient'
+ *                         | 'optional'
+ *   MODULE_OPTION       ::= PARAM_NAME '=' PARAM_VALUE
+ *
+ *   APP_NAME     ::= JAVA_IDENTIFIER
+ *   MODULE_CLASS ::= JAVA_IDENTIFIER ('.' JAVA_IDENTIFIER)*
+ *   PARAM_NAME   ::= STRING
+ *   PARAM_VALUE  ::= '"' STRING '"' | ''' STRING ''' | STRING
+ *
+ * + *

This implementation will specifically attempt to process one or more + * Login Configuration files in the following locations, and when found parse + * them and merge their contents. The locations, and the order in which they are + * investigated, follows:

+ * + *
    + *
  1. If the following Security properties: + * java.security.auth.login.config.url.N, where N + * is a digit, from 1 to an arbitrary number, are defined, then + * the value of each of those properties will be considered as a JAAS Login + * Configuration file written in the default syntax. This implementation will + * attempt parsing all such files. + * + *

    It is worth noting the following: + *

      + *
    • The GNU Classpath security file, named classpath.security, + * where all Security properties are encoded, is usually located in + * /usr/local/classpath/lib/security folder.
      • + * + *
    • The numbers used in the properties + * java.security.auth.login.config.url.N MUST be sequential, + * with no breaks in-between.
      • + *
    + *

    + * + *

    If at least one of the designated Configuration files was found, and + * was parsed correctly, then no other location will be inspected.

    2. + * + *
  2. If the System property named java.security.auth.login.config + * is not null or empty, its contents are then interpreted as a URL to a + * JAAS Login Configuration file written in the default syntax. + * + *

    If this System property is defined, and the file it refers to was + * parsed correctly, then no other location will be inspected.

    3. + * + *
  3. If a file named .java.login.config or java.login.config + * (in that order) is found in the location referenced by the value of the + * System property user.home, then that file is parsed as a JAAS Login + * Configuration written in the default syntax.
    4. + * + *
  4. If none of the above resulted in a correctly parsed JAAS Login + * Configuration file, then this implementation will install a Null + * Configuration which basically does not recognize any Application.
    5. + *
+ */ +public final class GnuConfiguration extends Configuration +{ + private static final Logger log = Logger.getLogger(GnuConfiguration.class.getName()); + /** + * The internal map of login modules keyed by application name. Each entry in + * this map is a {@link List} of {@link AppConfigurationEntry}s for that + * application name. + */ + private Map loginModulesMap; + /** Our reference to our default syntax parser. */ + private ConfigFileParser cp; + + // Constructor(s) + // -------------------------------------------------------------------------- + + /** Trivial 0-arguments Constructor. */ + public GnuConfiguration() + { + super(); + + loginModulesMap = new HashMap(); + cp = new ConfigFileParser(); + init(); + } + + // Class methods + // -------------------------------------------------------------------------- + + // Instance methods + // -------------------------------------------------------------------------- + + // Configuration abstract methods implementation ---------------------------- + + /* (non-Javadoc) + * @see javax.security.auth.login.Configuration#getAppConfigurationEntry(java.lang.String) + */ + public AppConfigurationEntry[] getAppConfigurationEntry(String appName) + { + if (appName == null) + return null; + + appName = appName.trim(); + if (appName.length() == 0) + return null; + + List loginModules = (List) loginModulesMap.get(appName); + if (loginModules == null || loginModules.size() == 0) + return null; + + if (gnu.java.security.Configuration.DEBUG) + log.fine(appName + " -> " + loginModules.size() + " entry(ies)"); + return (AppConfigurationEntry[]) loginModules.toArray(new AppConfigurationEntry[0]); + } + + /** + * Refreshes and reloads this Configuration. + * + *

This method causes this Configuration object to refresh / + * reload its contents following the locations and logic described above in + * the class documentation section.

+ * + * @throws SecurityException if the caller does not have an + * {@link AuthPermission} for the action named + * refreshLoginConfiguration. + * @see AuthPermission + */ + public void refresh() + { + SecurityManager sm = System.getSecurityManager(); + if (sm != null) + sm.checkPermission(new AuthPermission("refreshLoginConfiguration")); + + loginModulesMap.clear(); + init(); + } + + // helper methods ----------------------------------------------------------- + + /** + * Attempts to find and parse JAAS Login Configuration file(s) written in + * the default syntax. The locations searched are as descibed in the class + * documentation. + */ + private void init() + { + if (processSecurityProperties()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("Using login configuration defined by Security property(ies)"); + } + else if (processSystemProperty()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("Using login configuration defined by System property"); + } + else if (processUserHome()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("Using login configuration defined in ${user.home}"); + } + else + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("No login configuration file found"); + } + } + + /** + * Attempts to locate and parse one or more JAAS Login Configuration files + * defined as the values of the Security properties + * java.security.auth.login.config.url.N. + * + * @return true if it succeeds, and false + * otherwsie. + */ + private boolean processSecurityProperties() + { + boolean result = false; + int counter = 0; + String s; + while (true) + try + { + counter++; + s = Security.getProperty("java.security.auth.login.config.url." + + counter); + if (s == null) + break; + + s = s.trim(); + if (s.length() != 0) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("java.security.auth.login.config.url." + counter + + " = " + s); + parseConfig(getInputStreamFromURL(s)); + result = true; + } + } + catch (Throwable t) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("Exception while handling Security property at #" + + counter + ". Continue: " + t); + } + return result; + } + + /** + * Attempts to open a designated string as a well-formed {@link URL}. If a + * {@link MalformedURLException} occurs, this method then tries to open that + * string as a {@link File} (with the same name). If it succeeds, an + * {@link InputStream} is constructed and returned. + * + * @param s + * the designated name of either a {@link URL} or a {@link File} + * assumed to contain a JAAS Login Configuration in the default + * syntax. + * @return an {@link InputStream} around the data source. + * @throws IOException + * if an exception occurs during the operation. + */ + private InputStream getInputStreamFromURL(String s) throws IOException + { + InputStream result = null; + try + { + URL url = new URL(s); + result = url.openStream(); + } + catch (MalformedURLException x) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("Failed opening as URL: " + s + ". Will try as File"); + result = new FileInputStream(s); + } + return result; + } + + /** + * Attempts to locate and parse a JAAS Login Configuration file defined as the + * value of the System property java.security.auth.login.config. + * + * @return true if it succeeds, and false + * otherwsie. + */ + private boolean processSystemProperty() + { + boolean result = false; + try + { + String s = System.getProperty("java.security.auth.login.config"); + if (s != null) + { + s = s.trim(); + if (s.length() != 0) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("java.security.auth.login.config = " + s); + parseConfig(getInputStreamFromURL(s)); + result = true; + } + } + } + catch (Throwable t) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("Exception while handling System property. Continue: " + t); + } + return result; + } + + /** + * Attempts to locate and parse a JAAS Login Configuration file named either + * as .java.login.config or java.login.config (without the + * leading dot) in the folder referenced by the System property + * user.home. + * + * @return true if it succeeds, and false + * otherwsie. + */ + private boolean processUserHome() + { + boolean result = false; + try + { + File userHome = getUserHome(); + if (userHome == null) + return result; + + File jaasFile; + jaasFile = getConfigFromUserHome(userHome, ".java.login.config"); + if (jaasFile == null) + jaasFile = getConfigFromUserHome(userHome, "java.login.config"); + + if (jaasFile == null) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("Login Configuration file, in " + userHome + + ", does not exist or is inaccessible"); + return result; + } + + FileInputStream fis = new FileInputStream(jaasFile); + parseConfig(fis); + result = true; + } + catch (Throwable t) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("Exception (ignored) while handling ${user.home}: " + t); + } + return result; + } + + private void parseConfig(InputStream configStream) throws IOException + { + cp.parse(new InputStreamReader(configStream, "UTF-8")); + Map loginModulesMap = cp.getLoginModulesMap(); + mergeLoginModules(loginModulesMap); + } + + private void mergeLoginModules(Map otherLoginModules) + { + if (otherLoginModules == null || otherLoginModules.size() < 1) + return; + + for (Iterator it = otherLoginModules.keySet().iterator(); it.hasNext();) + { + String appName = (String) it.next(); + List thatListOfACEs = (List) otherLoginModules.get(appName); + if (thatListOfACEs == null || thatListOfACEs.size() < 1) + continue; + + List thisListsOfACEs = (List) loginModulesMap.get(appName); + if (thisListsOfACEs == null) + loginModulesMap.put(appName, thatListOfACEs); + else + thisListsOfACEs.addAll(thatListOfACEs); + } + } + + private File getUserHome() + { + String uh = System.getProperty("user.home"); + if (uh == null || uh.trim().length() == 0) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("User home path is not set or is empty"); + return null; + } + uh = uh.trim(); + File result = new File(uh); + if (! result.exists()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("User home '" + uh + "' does not exist"); + return null; + } + if (! result.isDirectory()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("User home '" + uh + "' is not a directory"); + return null; + } + if (! result.canRead()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("User home '" + uh + "' is not readable"); + return null; + } + return result; + } + + private File getConfigFromUserHome(File userHome, String fileName) + { + File result = new File(userHome, fileName); + if (! result.exists()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("File '" + fileName + "' does not exist in user's home"); + return null; + } + if (! result.isFile()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("File '" + fileName + "' in user's home is not a file"); + return null; + } + if (! result.canRead()) + { + if (gnu.java.security.Configuration.DEBUG) + log.fine("File '" + fileName + "' in user's home is not readable"); + return null; + } + return result; + } +} -- cgit v1.2.3