memoryuserdatabase.java

This temp directory is used by the JVM for temporary file storage. The JVM is configured to use thi

                if (!file.exists()) {
                    return;
                }
                FileInputStream fis = new FileInputStream(file);

                // Construct a digester to read the XML input file
                Digester digester = new Digester();
                digester.addFactoryCreate
                    ("tomcat-users/group",
                     new MemoryGroupCreationFactory(this));
                digester.addFactoryCreate
                    ("tomcat-users/role",
                     new MemoryRoleCreationFactory(this));
                digester.addFactoryCreate
                    ("tomcat-users/user",
                     new MemoryUserCreationFactory(this));

                // Parse the XML input file to load this database
                try {
                    digester.parse(fis);
                    fis.close();
                } catch (Exception e) {
                    try {
                        fis.close();
                    } catch (Throwable t) {
                        ;
                    }
                    throw e;
                }

            }
        }

    }


    /**
     * Remove the specified {@link Group} from this user database.
     *
     * @param group The group to be removed
     */
    public void removeGroup(Group group) {

        synchronized (groups) {
            Iterator users = getUsers();
            while (users.hasNext()) {
                User user = (User) users.next();
                user.removeGroup(group);
            }
            groups.remove(group.getGroupname());
        }

    }


    /**
     * Remove the specified {@link Role} from this user database.
     *
     * @param role The role to be removed
     */
    public void removeRole(Role role) {

        synchronized (roles) {
            Iterator groups = getGroups();
            while (groups.hasNext()) {
                Group group = (Group) groups.next();
                group.removeRole(role);
            }
            Iterator users = getUsers();
            while (users.hasNext()) {
                User user = (User) users.next();
                user.removeRole(role);
            }
            roles.remove(role.getRolename());
        }

    }


    /**
     * Remove the specified {@link User} from this user database.
     *
     * @param user The user to be removed
     */
    public void removeUser(User user) {

        synchronized (users) {
            users.remove(user.getUsername());
        }

    }


    /**
     * Save any updated information to the persistent storage location for
     * this user database.
     *
     * @exception Exception if any exception is thrown during saving
     */
    public void save() throws Exception {

        // Write out contents to a temporary file
        File fileNew = new File(pathnameNew);
        if (!fileNew.isAbsolute()) {
            fileNew =
                new File(System.getProperty("catalina.base"), pathnameNew);
        }
        PrintWriter writer = null;
        try {

            // Configure our PrintWriter
            FileOutputStream fos = new FileOutputStream(fileNew);
            OutputStreamWriter osw = new OutputStreamWriter(fos, "UTF8");
            writer = new PrintWriter(osw);

            // Print the file prolog
            writer.println("<?xml version='1.0' encoding='utf-8'?>");
            writer.println("<tomcat-users>");

            // Print entries for each defined role, group, and user
            Iterator values = null;
            values = getRoles();
            while (values.hasNext()) {
                writer.print("  ");
                writer.println(values.next());
            }
            values = getGroups();
            while (values.hasNext()) {
                writer.print("  ");
                writer.println(values.next());
            }
            values = getUsers();
            while (values.hasNext()) {
                writer.print("  ");
                writer.println(values.next());
            }

            // Print the file epilog
            writer.println("</tomcat-users>");

            // Check for errors that occurred while printing
            if (writer.checkError()) {
                writer.close();
                fileNew.delete();
                throw new IOException
                    (sm.getString("memoryUserDatabase.writeException",
                                  fileNew.getAbsolutePath()));
            }
            writer.close();
        } catch (IOException e) {
            if (writer != null) {
                writer.close();
            }
            fileNew.delete();
            throw e;
        }

        // Perform the required renames to permanently save this file
        File fileOld = new File(pathnameOld);
        if (!fileOld.isAbsolute()) {
            fileOld =
                new File(System.getProperty("catalina.base"), pathnameOld);
        }
        fileOld.delete();
        File fileOrig = new File(pathname);
        if (!fileOrig.isAbsolute()) {
            fileOrig =
                new File(System.getProperty("catalina.base"), pathname);
        }
        if (fileOrig.exists()) {
            fileOld.delete();
            if (!fileOrig.renameTo(fileOld)) {
                throw new IOException
                    (sm.getString("memoryUserDatabase.renameOld",
                                  fileOld.getAbsolutePath()));
            }
        }
        if (!fileNew.renameTo(fileOrig)) {
            if (fileOld.exists()) {
                fileOld.renameTo(fileOrig);
            }
            throw new IOException
                (sm.getString("memoryUserDatabase.renameNew",
                              fileOrig.getAbsolutePath()));
        }
        fileOld.delete();

    }


    /**
     * Return a String representation of this UserDatabase.
     */
    public String toString() {

        StringBuffer sb = new StringBuffer("MemoryUserDatabase[id=");
        sb.append(this.id);
        sb.append(",pathname=");
        sb.append(pathname);
        sb.append(",groupCount=");
        sb.append(this.groups.size());
        sb.append(",roleCount=");
        sb.append(this.roles.size());
        sb.append(",userCount=");
        sb.append(this.users.size());
        sb.append("]");
        return (sb.toString());

    }


    // -------------------------------------------------------- Package Methods


    /**
     * Return the <code>StringManager</code> for use in looking up messages.
     */
    StringManager getStringManager() {

        return (sm);

    }


}



/**
 * Digester object creation factory for group instances.
 */
class MemoryGroupCreationFactory implements ObjectCreationFactory {

    public MemoryGroupCreationFactory(MemoryUserDatabase database) {
        this.database = database;
    }

    public Object createObject(Attributes attributes) {
        String groupname = attributes.getValue("groupname");
        if (groupname == null) {
            groupname = attributes.getValue("name");
        }
        String description = attributes.getValue("description");
        String roles = attributes.getValue("roles");
        Group group = database.createGroup(groupname, description);
        if (roles != null) {
            while (roles.length() > 0) {
                String rolename = null;
                int comma = roles.indexOf(',');
                if (comma >= 0) {
                    rolename = roles.substring(0, comma).trim();
                    roles = roles.substring(comma + 1);
                } else {
                    rolename = roles.trim();
                    roles = "";
                }
                if (rolename.length() > 0) {
                    Role role = database.findRole(rolename);
                    if (role == null) {
                        role = database.createRole(rolename, null);
                    }
                    group.addRole(role);
                }
            }
        }
        return (group);
    }

    private MemoryUserDatabase database = null;

    private Digester digester = null;

    public Digester getDigester() {
        return (this.digester);
    }

    public void setDigester(Digester digester) {
        this.digester = digester;
    }

}


/**
 * Digester object creation factory for role instances.
 */
class MemoryRoleCreationFactory implements ObjectCreationFactory {

    public MemoryRoleCreationFactory(MemoryUserDatabase database) {
        this.database = database;
    }

    public Object createObject(Attributes attributes) {
        String rolename = attributes.getValue("rolename");
        if (rolename == null) {
            rolename = attributes.getValue("name");
        }
        String description = attributes.getValue("description");
        Role role = database.createRole(rolename, description);
        return (role);
    }

    private MemoryUserDatabase database = null;

    private Digester digester = null;

    public Digester getDigester() {
        return (this.digester);
    }

    public void setDigester(Digester digester) {
        this.digester = digester;
    }

}


/**
 * Digester object creation factory for user instances.
 */
class MemoryUserCreationFactory implements ObjectCreationFactory {

    public MemoryUserCreationFactory(MemoryUserDatabase database) {
        this.database = database;
    }

    public Object createObject(Attributes attributes) {
        String username = attributes.getValue("username");
        if (username == null) {
            username = attributes.getValue("name");
        }
        String password = attributes.getValue("password");
        String fullName = attributes.getValue("fullName");
        if (fullName == null) {
            fullName = attributes.getValue("fullname");
        }
        String groups = attributes.getValue("groups");
        String roles = attributes.getValue("roles");
        User user = database.createUser(username, password, fullName);
        if (groups != null) {
            while (groups.length() > 0) {
                String groupname = null;
                int comma = groups.indexOf(',');
                if (comma >= 0) {
                    groupname = groups.substring(0, comma).trim();
                    groups = groups.substring(comma + 1);
                } else {
                    groupname = groups.trim();
                    groups = "";
                }
                if (groupname.length() > 0) {
                    Group group = database.findGroup(groupname);
                    if (group == null) {
                        group = database.createGroup(groupname, null);
                    }
                    user.addGroup(group);
                }
            }
        }
        if (roles != null) {
            while (roles.length() > 0) {
                String rolename = null;
                int comma = roles.indexOf(',');
                if (comma >= 0) {
                    rolename = roles.substring(0, comma).trim();
                    roles = roles.substring(comma + 1);
                } else {
                    rolename = roles.trim();
                    roles = "";
                }
                if (rolename.length() > 0) {
                    Role role = database.findRole(rolename);
                    if (role == null) {
                        role = database.createRole(rolename, null);
                    }
                    user.addRole(role);
                }
            }
        }
        return (user);
    }

    private MemoryUserDatabase database = null;

    private Digester digester = null;

    public Digester getDigester() {
        return (this.digester);
    }

    public void setDigester(Digester digester) {
        this.digester = digester;
    }

}