1 files changed, 175 insertions, 0 deletions
diff --git a/pki/base/common/src/com/netscape/cmscore/base/FileConfigStore.java b/pki/base/common/src/com/netscape/cmscore/base/FileConfigStore.java
new file mode 100644
index 000000000..35e5f3e8c
--- /dev/null
+++ b/pki/base/common/src/com/netscape/cmscore/base/FileConfigStore.java
@@ -0,0 +1,175 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program 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; version 2 of the License.
+//
+// This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+package com.netscape.cmscore.base;
+
+
+import java.io.*;
+import java.util.*;
+import com.netscape.certsrv.base.*;
+import com.netscape.certsrv.apps.CMS;
+
+
+/**
+ * FileConfigStore:
+ * Extends HashConfigStore with methods to load/save from/to file for 
+ * persistent storage. This is a configuration store agent who
+ * reads data from a file.
+ * <P>
+ * Note that a LdapConfigStore can be implemented so that it reads 
+ * the configuration stores from the Ldap directory.
+ * <P>
+ * 
+ * @version $Revision: 14561 $, $Date: 2007-05-01 10:28:56 -0700 (Tue, 01 May 2007) $
+ * @see PropConfigStore
+ */
+public class FileConfigStore extends PropConfigStore implements 
+        IConfigStore {
+
+    private File mFile = null;
+
+    /**
+     * Constructs a file configuration store.
+     * <P>
+     *
+     * @param fileName file name
+     * @exception EBaseException failed to create file configuration
+     */
+    public FileConfigStore(String fileName) throws EBaseException {
+        super(null); // top-level store without a name
+        mFile = new File(fileName);
+        if (!mFile.exists()) {
+            throw new EBaseException(CMS.getUserMessage("CMS_BASE_NO_CONFIG_FILE", 
+                        mFile.getPath()));
+        }
+        load(fileName);
+    }
+
+    /**
+     * Loads property file into memory.
+     * <P>
+     *
+     * @param fileName file name
+     * @exception EBaseException failed to load configuration
+     */
+    public void load(String fileName) throws EBaseException {
+        try {
+            FileInputStream fi = new FileInputStream(fileName);
+            BufferedInputStream bis = new BufferedInputStream(fi);
+
+            super.load(bis);
+        } catch (IOException e) {
+            throw new EBaseException("input stream error " + fileName, e);
+        }
+    }
+
+    /**
+     * The original config file is moved to <filename>.<date>.
+     * Commits the current properties to the configuration file.
+     * <P>
+     *
+     * @param backup 
+     */
+    public void commit(boolean createBackup) throws EBaseException {
+        if (createBackup) {
+            File newName = new File(mFile.getPath() + "." +
+                    Long.toString(System.currentTimeMillis()));
+
+            if (!mFile.renameTo(newName)) {
+                throw new EBaseException("rename failed");
+            }
+        }
+        // proceed only if the rename is successful
+        save(mFile.getPath());
+    }
+
+    /**
+     * Saves in-memory properties to a specified file.
+     * <P>
+     * Note that the superclass's save is synchronized. It
+     * means no properties can be altered (inserted) at
+     * the saving time.
+     * <P>
+     *
+     * @param fileName filename
+     * @exception EBaseException failed to save configuration
+     */
+    public void save(String fileName) throws EBaseException {
+        try {
+            FileOutputStream fo = new FileOutputStream(fileName);
+            PrintWriter writer = new PrintWriter(new OutputStreamWriter(fo));
+
+            printSubStore(writer, this, "");
+            writer.close();
+            fo.close();
+        } catch (IOException e) {
+            throw new EBaseException("output stream error " + fileName, e);
+        }
+    }
+
+    private void printSubStore(PrintWriter writer, IConfigStore store,
+        String name) throws EBaseException,
+            IOException {
+        // print keys
+        Enumeration e0 = store.getPropertyNames();
+        Vector v = new Vector();
+
+        while (e0.hasMoreElements()) {
+            v.addElement(e0.nextElement());
+        }
+
+        // sorting them lexicographically
+        while (v.size() > 0) {
+            String pname = (String) v.firstElement();
+            int j = 0;
+
+            for (int i = 1; i < v.size(); i++) {
+                String s = (String) v.elementAt(i);
+
+                if (pname.compareTo(s) > 0) {
+                    j = i;
+                    pname = (String) v.elementAt(i);
+                }
+            }
+            v.removeElementAt(j);
+            writer.println(name + pname + "=" + store.getString(pname));
+        }
+
+        // print substores
+        Enumeration e1 = store.getSubStoreNames();
+
+        while (e1.hasMoreElements()) {
+            v.addElement(e1.nextElement());
+        }
+        while (v.size() > 0) {
+            String pname = (String) v.firstElement();
+            int j = 0;
+
+            for (int i = 1; i < v.size(); i++) {
+                String s = (String) v.elementAt(i);
+
+                if (pname.compareTo(s) > 0) {
+                    j = i;
+                    pname = (String) v.elementAt(i);
+                }
+            }
+            v.removeElementAt(j);
+            printSubStore(writer, store.getSubStore(pname), name +
+                pname + ".");
+        }
+    }
+}