From 1afa0e255d694840c77c19c1effed6c0d0a92f1f Mon Sep 17 00:00:00 2001
From: Ugnich Anton
Date: Fri, 21 Jun 2013 00:48:01 +0700
Subject: SQLHelpers

---
 src/com/juick/server/SQLHelpers.java  | 57 ++++++++++++++++++++++++++++++++
 src/com/juick/server/UserQueries.java | 62 +++++++----------------------------
 2 files changed, 69 insertions(+), 50 deletions(-)

diff --git a/src/com/juick/server/SQLHelpers.java b/src/com/juick/server/SQLHelpers.java
index 7879c244..dd3c4bc3 100644
--- a/src/com/juick/server/SQLHelpers.java
+++ b/src/com/juick/server/SQLHelpers.java
@@ -35,6 +35,63 @@ public class SQLHelpers {
         return ret;
     }
 
+    public static int getInt(Connection sql, String query, String param, int defvalue) {
+        int ret = defvalue;
+        PreparedStatement stmt = null;
+        ResultSet rs = null;
+        try {
+            stmt = sql.prepareStatement(query);
+            stmt.setString(1, param);
+            rs = stmt.executeQuery();
+            if (rs.first()) {
+                ret = rs.getInt(1);
+            }
+        } catch (SQLException e) {
+            System.err.println(e);
+        } finally {
+            Utils.finishSQL(rs, stmt);
+        }
+        return ret;
+    }
+
+    public static String getString(Connection sql, String query, int param) {
+        String ret = null;
+        PreparedStatement stmt = null;
+        ResultSet rs = null;
+        try {
+            stmt = sql.prepareStatement(query);
+            stmt.setInt(1, param);
+            rs = stmt.executeQuery();
+            if (rs.first()) {
+                ret = rs.getString(1);
+            }
+        } catch (SQLException e) {
+            System.err.println(e);
+        } finally {
+            Utils.finishSQL(rs, stmt);
+        }
+        return ret;
+    }
+
+    public static String getString(Connection sql, String query, String param) {
+        String ret = null;
+        PreparedStatement stmt = null;
+        ResultSet rs = null;
+        try {
+            stmt = sql.prepareStatement(query);
+            stmt.setString(1, param);
+            rs = stmt.executeQuery();
+            if (rs.first()) {
+                ret = rs.getString(1);
+            }
+        } catch (SQLException e) {
+            System.err.println(e);
+        } finally {
+            Utils.finishSQL(rs, stmt);
+        }
+        return ret;
+    }
+
     public static ArrayList<Integer> getArrayInteger(Connection sql, String query, int param) {
         ArrayList<Integer> ret = new ArrayList<Integer>();
 
diff --git a/src/com/juick/server/UserQueries.java b/src/com/juick/server/UserQueries.java
index d6f6045c..f0c5a57f 100644
--- a/src/com/juick/server/UserQueries.java
+++ b/src/com/juick/server/UserQueries.java
@@ -114,45 +114,16 @@ public class UserQueries {
         return users;
     }
 
-    public static String getJIDbyUID(Connection sql, int UID) {
-        String jid = null;
-
-        PreparedStatement stmt = null;
-        ResultSet rs = null;
-        try {
-            stmt = sql.prepareStatement("SELECT jid FROM jids WHERE user_id=? AND active=1");
-            stmt.setInt(1, UID);
-            rs = stmt.executeQuery();
-            if (rs.first()) {
-                jid = rs.getString(1);
-            }
-        } catch (SQLException e) {
-            System.err.println(e);
-        } finally {
-            Utils.finishSQL(rs, stmt);
-        }
+    public static String getJIDbyUID(Connection sql, int uid) {
+        return SQLHelpers.getString(sql, "SELECT jid FROM jids WHERE user_id=? AND active=1", uid);
+    }
 
-        return jid;
+    public static int getUIDbyJID(Connection sql, String jid) {
+        return SQLHelpers.getInt(sql, "SELECT user_id FROM jids WHERE jid=?", jid, 0);
     }
 
     public static int getUIDbyHash(Connection sql, String hash) {
-        int UID = 0;
-
-        PreparedStatement stmt = null;
-        ResultSet rs = null;
-        try {
-            stmt = sql.prepareStatement("SELECT user_id FROM logins WHERE hash=?");
-            stmt.setString(1, hash);
-            rs = stmt.executeQuery();
-            if (rs.first()) {
-                UID = rs.getInt(1);
-            }
-        } catch (SQLException e) {
-            System.err.println(e);
-        } finally {
-            Utils.finishSQL(rs, stmt);
-        }
-        return UID;
+        return SQLHelpers.getInt(sql, "SELECT user_id FROM logins WHERE hash=?", hash, 0);
     }
 
     public static com.juick.User getUserByHash(Connection sql, String hash) {
@@ -178,24 +149,11 @@ public class UserQueries {
     }
 
     public static String getHashByUID(Connection sql, int uid) {
-        String hash = null;
-        PreparedStatement stmt = null;
-        ResultSet rs = null;
-        try {
-            stmt = sql.prepareStatement("SELECT hash FROM logins WHERE user_id=?");
-            stmt.setInt(1, uid);
-            rs = stmt.executeQuery();
-            if (rs.first()) {
-                hash = rs.getString(1);
-            }
-        } catch (SQLException e) {
-            System.err.println(e);
-        } finally {
-            Utils.finishSQL(rs, stmt);
-        }
+        String hash = SQLHelpers.getString(sql, "SELECT hash FROM logins WHERE user_id=?", uid);
 
         if (hash == null) {
             hash = generateHash(16);
+            PreparedStatement stmt = null;
             try {
                 stmt = sql.prepareStatement("INSERT INTO logins(user_id,hash) VALUES (?,?)");
                 stmt.setInt(1, uid);
@@ -220,6 +178,10 @@ public class UserQueries {
         return sb.toString();
     }
 
+    public static boolean checkUserNameValid(String uname) {
+        return uname != null && uname.length() > 1 && uname.length() < 16 && uname.matches("[a-zA-Z0-9\\-\\.\\@]+");
+    }
+
     public static int checkPassword(Connection sql, String username, String password) {
         int uid = 0;
         PreparedStatement stmt = null;
-- 
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