From c9be46f14726e962905263ad531fab1f0d73b1e8 Mon Sep 17 00:00:00 2001
From: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Date: Mon, 16 Jun 2014 13:42:26 -0300
Subject: [PATCH] Bug 12226 - A user with the database username/userid can
 access staff with full permissions

This patch implements 2 suggestions on comment #3

- Prevents creation of a new user with same userid
of database user

- When checking password, if userid matches database user,
only check against pass on config file

To test:
1. Create a new user with same login as database user
any password different from real db user
2. Check that you can login on staff using this user/pass
and you are superlibrarian

3. Apply the patch

4. Login again using new pass, it must fail
5. Login again using db pass, you are now superuser,
but system does not warn you :( No problem, that's
for having one borrower with that login
6. Delete user with same login as db user
7. Try to create one again as in 1, system must return
an error of duplicate login!

8. Check for no regressions on user/pass authentication

Resubmited, has an error

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Passes all tests and QA script.
This works nicely and as described.
Also editing the former 'superuser' will force you to
change the userid in order to save any other change.

Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
---
 C4/Auth.pm    | 19 +++++++++++--------
 C4/Members.pm |  3 ++-
 2 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/C4/Auth.pm b/C4/Auth.pm
index 95b271765c..e98b43c2bd 100644
--- a/C4/Auth.pm
+++ b/C4/Auth.pm
@@ -1560,6 +1560,17 @@ sub checkpw {
 sub checkpw_internal {
     my ( $dbh, $userid, $password ) = @_;
 
+    if ( $userid && $userid eq C4::Context->config('user') ) {
+        if ( $password && $password eq C4::Context->config('pass') ) {
+        # Koha superuser account
+#     C4::Context->set_userenv(0,0,C4::Context->config('user'),C4::Context->config('user'),C4::Context->config('user'),"",1);
+            return 2;
+        }
+        else {
+            return 0;
+        }
+    }
+
     my $sth =
       $dbh->prepare(
 "select password,cardnumber,borrowernumber,userid,firstname,surname,branchcode,flags from borrowers where userid=?"
@@ -1594,14 +1605,6 @@ sub checkpw_internal {
             return 1, $cardnumber, $userid;
         }
     }
-    if (   $userid && $userid eq C4::Context->config('user')
-        && "$password" eq C4::Context->config('pass') )
-    {
-
-# Koha superuser account
-#     C4::Context->set_userenv(0,0,C4::Context->config('user'),C4::Context->config('user'),C4::Context->config('user'),"",1);
-        return 2;
-    }
     if (   $userid && $userid eq 'demo'
         && "$password" eq 'demo'
         && C4::Context->config('demo') )
diff --git a/C4/Members.pm b/C4/Members.pm
index f8324951ed..f6cf4a75bd 100644
--- a/C4/Members.pm
+++ b/C4/Members.pm
@@ -869,7 +869,8 @@ sub Check_Userid {
       $dbh->prepare(
         "SELECT * FROM borrowers WHERE userid=? AND borrowernumber != ?");
     $sth->execute( $uid, $member );
-    if ( ( $uid ne '' ) && ( my $row = $sth->fetchrow_hashref ) ) {
+    if ( (( $uid ne '' ) && ( my $row = $sth->fetchrow_hashref    )) or
+         (( $uid ne '' ) && ( $uid eq C4::Context->config('user') )) ) {
         return 0;
     }
     else {
-- 
2.39.5