configfile.java

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	java.lang.SecurityManager sm = System.getSecurityManager();
	if (sm != null)
	    sm.checkPermission(new AuthPermission("refreshLoginConfiguration"));

	java.security.AccessController.doPrivileged
	    (new java.security.PrivilegedAction() {
	    public Object run() {
		try {
		    init(url);
		} catch (java.io.IOException ioe) {
		    throw (SecurityException) new SecurityException
				(ioe.getLocalizedMessage()).initCause(ioe);
		}
		return null;
	    }
	});
    }

    private void readConfig(Reader reader, HashMap newConfig)
	throws IOException {

	int linenum = 1;
 
	if (!(reader instanceof BufferedReader))
	    reader = new BufferedReader(reader);
 
	st = new StreamTokenizer(reader);
	st.quoteChar('"');
	st.wordChars('$', '$');
	st.wordChars('_', '_');
	st.wordChars('-', '-');
	st.lowerCaseMode(false);
	st.slashSlashComments(true);
	st.slashStarComments(true);
	st.eolIsSignificant(true);
 
	lookahead = nextToken();
	while (lookahead != StreamTokenizer.TT_EOF) {
	    parseLoginEntry(newConfig);
	}
    }

    private void parseLoginEntry(HashMap newConfig) throws IOException {
 
	String appName;
	String moduleClass;
	String sflag;
	AppConfigurationEntry.LoginModuleControlFlag controlFlag;
	LinkedList configEntries = new LinkedList();
 
	// application name
	appName = st.sval;
	lookahead = nextToken();
 
	if (debugParser != null) {
	    debugParser.println("\tReading next config entry: " + appName);
	}
 
	match("{");
 
	// get the modules
	while (peek("}") == false) {
	    HashSet argSet = new HashSet();
 
	    // get the module class name
	    moduleClass = match("module class name");
 
	    // controlFlag (required, optional, etc)
	    sflag = match("controlFlag");
	    if (sflag.equalsIgnoreCase("REQUIRED"))
		controlFlag =
			AppConfigurationEntry.LoginModuleControlFlag.REQUIRED;
	    else if (sflag.equalsIgnoreCase("REQUISITE"))
		controlFlag =
			AppConfigurationEntry.LoginModuleControlFlag.REQUISITE;
	    else if (sflag.equalsIgnoreCase("SUFFICIENT"))
		controlFlag =
			AppConfigurationEntry.LoginModuleControlFlag.SUFFICIENT;
	    else if (sflag.equalsIgnoreCase("OPTIONAL"))
		controlFlag =
			AppConfigurationEntry.LoginModuleControlFlag.OPTIONAL;
	    else {
		MessageFormat form = new MessageFormat(ResourcesMgr.getString
			("Configuration Error:\n\tInvalid control flag, flag",
			"sun.security.util.AuthResources"));
		Object[] source = {sflag};
		throw new IOException(form.format(source));
	    }
 
	    // get the args
	    HashMap options = new HashMap();
	    String key;
	    String value;
	    while (peek(";") == false) {
		key = match("option key");
		match("=");
		try {
		    value = expand(match("option value"));
		} catch (PropertyExpander.ExpandException peee) {
		    throw new IOException(peee.getLocalizedMessage());
		}
		options.put(key, value);
	    }
 
	    lookahead = nextToken();
 
	    // create the new element
	    if (debugParser != null) {
		debugParser.println("\t\t" + moduleClass + ", " + sflag);
		java.util.Iterator i = options.keySet().iterator();
		while (i.hasNext()) {
		    key = (String)i.next();
		    debugParser.println("\t\t\t" +
					key +
					"=" +
					(String)options.get(key));
		}
	    }
	    AppConfigurationEntry entry = new AppConfigurationEntry
							(moduleClass,
							controlFlag,
							options);
	    configEntries.add(entry);
	}

	match("}");
	match(";");
 
	// add this configuration entry
	if (newConfig.containsKey(appName)) {
	    MessageFormat form = new MessageFormat(ResourcesMgr.getString
		("Configuration Error:\n\t" +
			"Can not specify multiple entries for appName",
		"sun.security.util.AuthResources"));
	    Object[] source = {appName};
	    throw new IOException(form.format(source));
	}
	newConfig.put(appName, configEntries);
    }

    private String match(String expect) throws IOException {
 
	String value = null;
 
	switch(lookahead) {
	case StreamTokenizer.TT_EOF:
 
	    MessageFormat form1 = new MessageFormat(ResourcesMgr.getString
		("Configuration Error:\n\texpected [expect], " +
			"read [end of file]",
		"sun.security.util.AuthResources"));
	    Object[] source1 = {expect};
	    throw new IOException(form1.format(source1));
 
	case '"':
	case StreamTokenizer.TT_WORD:

	    if (expect.equalsIgnoreCase("module class name") ||
		expect.equalsIgnoreCase("controlFlag") ||
		expect.equalsIgnoreCase("option key") ||
		expect.equalsIgnoreCase("option value")) {
		value = st.sval;
		lookahead = nextToken();
	    } else {
		MessageFormat form = new MessageFormat(ResourcesMgr.getString
			("Configuration Error:\n\tLine line: " +
				"expected [expect], found [value]",
			"sun.security.util.AuthResources"));
		Object[] source = {new Integer(linenum), expect, st.sval};
		throw new IOException(form.format(source));
	    }
	    break;
 
	case '{':
 
	    if (expect.equalsIgnoreCase("{")) {
		lookahead = nextToken();
	    } else {
		MessageFormat form = new MessageFormat(ResourcesMgr.getString
			("Configuration Error:\n\tLine line: expected [expect]",
			"sun.security.util.AuthResources"));
		Object[] source = {new Integer(linenum), expect, st.sval};
		throw new IOException(form.format(source));
	    }
	    break;

	case ';':

	    if (expect.equalsIgnoreCase(";")) {
		lookahead = nextToken();
	    } else {
		MessageFormat form = new MessageFormat(ResourcesMgr.getString
			("Configuration Error:\n\tLine line: expected [expect]",
			"sun.security.util.AuthResources"));
		Object[] source = {new Integer(linenum), expect, st.sval};
		throw new IOException(form.format(source));
	    }
	    break;
 
	case '}':
 
	    if (expect.equalsIgnoreCase("}")) {
		lookahead = nextToken();
	    } else {
		MessageFormat form = new MessageFormat(ResourcesMgr.getString
			("Configuration Error:\n\tLine line: expected [expect]",
			"sun.security.util.AuthResources"));
		Object[] source = {new Integer(linenum), expect, st.sval};
		throw new IOException(form.format(source));
	    }
	    break;

	case '=':

	    if (expect.equalsIgnoreCase("=")) {
		lookahead = nextToken();
	    } else {
		MessageFormat form = new MessageFormat(ResourcesMgr.getString
			("Configuration Error:\n\tLine line: expected [expect]",
			"sun.security.util.AuthResources"));
		Object[] source = {new Integer(linenum), expect, st.sval};
		throw new IOException(form.format(source));
	    }
	    break;
 
	default:
	    MessageFormat form = new MessageFormat(ResourcesMgr.getString
			("Configuration Error:\n\tLine line: " +
				"expected [expect], found [value]",
			"sun.security.util.AuthResources"));
	    Object[] source = {new Integer(linenum), expect, st.sval};
	    throw new IOException(form.format(source));
	}
	return value;
    }

    private boolean peek(String expect) {
	boolean found = false;
 
	switch (lookahead) {
	case ',':
	    if (expect.equalsIgnoreCase(","))
		found = true;
	    break;
	case ';':
	    if (expect.equalsIgnoreCase(";"))
		found = true;
	    break;
	case '{':
	    if (expect.equalsIgnoreCase("{"))
		found = true;
	    break;
	case '}':
	    if (expect.equalsIgnoreCase("}"))
		found = true;
	    break;
	default:
	}
	return found;
    }

    private int nextToken() throws IOException {
	int tok;
	while ((tok = st.nextToken()) == StreamTokenizer.TT_EOL) {
	    linenum++;
	}
	return tok;
    }

    /*
     * Fast path reading from file urls in order to avoid calling
     * FileURLConnection.connect() which can be quite slow the first time
     * it is called. We really should clean up FileURLConnection so that
     * this is not a problem but in the meantime this fix helps reduce
     * start up time noticeably for the new launcher. -- DAC
     */
    private InputStream getInputStream(URL url) throws IOException {
	if ("file".equals(url.getProtocol())) {
	    String path = url.getFile().replace('/', File.separatorChar);
	    return new FileInputStream(path);
	} else {
	    return url.openStream();
	}
    }

    private String expand(String value)
	throws PropertyExpander.ExpandException, IOException {

	if ("".equals(value)) {
	    return value;
	}

	if (expandProp) {

	    String s = PropertyExpander.expand(value);

	    if (s == null || s.length() == 0) {
		MessageFormat form = new MessageFormat(ResourcesMgr.getString
			("Configuration Error:\n\tLine line: " +
			"system property [value] expanded to empty value",
			"sun.security.util.AuthResources"));
		Object[] source = {new Integer(linenum), value};
		throw new IOException(form.format(source));
	    }
	    return s;
	} else {
	    return value;
	}
    }
}