diff --git a/htdocs/comm/propal/contact.php b/htdocs/comm/propal/contact.php
index 306b56ddf13..77ffe3bf06c 100644
--- a/htdocs/comm/propal/contact.php
+++ b/htdocs/comm/propal/contact.php
@@ -37,15 +37,10 @@ $langs->load("orders");
 $langs->load("sendings");
 $langs->load("companies");
 
-$user->getrights('propale');
-if (!$user->rights->propale->lire) accessforbidden();
+$propalid = isset($_GET["propalid"])?$_GET["propalid"]:'';
 
-// Sécurité accés client
-if ($user->societe_id > 0)
-{
-	$action = '';
-	$socid = $user->societe_id;
-}
+// Sécurité d'accès client et commerciaux
+$security = restrictedArea($user, 'propale', $propalid, 'propal');
 
 /*
  * Ajout d'un nouveau contact
diff --git a/htdocs/commande/contact.php b/htdocs/commande/contact.php
index 9597cfc7884..8b2c049de81 100644
--- a/htdocs/commande/contact.php
+++ b/htdocs/commande/contact.php
@@ -37,15 +37,10 @@ $langs->load("orders");
 $langs->load("sendings");
 $langs->load("companies");
 
-$user->getrights('commande');
-if (!$user->rights->commande->lire) accessforbidden();
+$commandeid = isset($_GET["id"])?$_GET["id"]:'';
 
-// Sécurité accés client
-if ($user->societe_id > 0)
-{
-	$action = '';
-	$socid = $user->societe_id;
-}
+// Sécurité d'accès client et commerciaux
+$security = restrictedArea($user, 'commande', $commandeid);
 
 /*
  * Ajout d'un nouveau contact
diff --git a/htdocs/compta/facture/contact.php b/htdocs/compta/facture/contact.php
index 852b34395d5..496ca7e1f91 100644
--- a/htdocs/compta/facture/contact.php
+++ b/htdocs/compta/facture/contact.php
@@ -33,19 +33,12 @@ require_once(DOL_DOCUMENT_ROOT."/contact.class.php");
 require_once(DOL_DOCUMENT_ROOT.'/lib/invoice.lib.php');
 
 $langs->load("facture");
-// $langs->load("orders");
 $langs->load("companies");
 
-$user->getrights('facture');
+$facid = isset($_GET["facid"])?$_GET["facid"]:'';
 
-if (!$user->rights->facture->lire) accessforbidden();
-
-// Sécurité accés client
-if ($user->societe_id > 0)
-{
-	$action = '';
-	$socid = $user->societe_id;
-}
+// Sécurité d'accès client et commerciaux
+$security = restrictedArea($user, 'facture', $facid);
 
 /*
  * Ajout d'un nouveau contact
diff --git a/htdocs/contrat/contact.php b/htdocs/contrat/contact.php
index ba24b2b66ef..4654afc73f3 100644
--- a/htdocs/contrat/contact.php
+++ b/htdocs/contrat/contact.php
@@ -34,39 +34,12 @@ require_once(DOL_DOCUMENT_ROOT."/contact.class.php");
 
 
 $langs->load("contracts");
-// $langs->load("orders");
 $langs->load("companies");
 
-$user->getrights('contrat');
-
-if (!$user->rights->contrat->lire) accessforbidden();
-
-// Sécurité accés client et commerciaux
 $contratid = isset($_GET["id"])?$_GET["id"]:'';
 
-if ($user->societe_id > 0)
-{
-    $action = '';
-    $socid = $user->societe_id;
-}
-
-// Protection restriction commercial
-if ($contratid && (!$user->rights->commercial->client->voir || $user->societe_id > 0))
-{
-        $sql = "SELECT sc.fk_soc, c.fk_soc";
-        $sql .= " FROM ".MAIN_DB_PREFIX."societe_commerciaux as sc, ".MAIN_DB_PREFIX."contrat as c";
-        $sql .= " WHERE c.rowid = ".$contratid;
-        if (!$user->rights->commercial->client->voir && !$user->societe_id > 0)
-        {
-        	$sql .= " AND sc.fk_soc = c.fk_soc AND sc.fk_user = ".$user->id;
-        }
-        if ($user->societe_id > 0) $sql .= " AND c.fk_soc = ".$socid;
-
-        if ( $db->query($sql) )
-        {
-          if ( $db->num_rows() == 0) accessforbidden();
-        }
-}
+// Sécurité d'accès client et commerciaux
+$security = restrictedArea($user, 'contrat', $contratid);
 
 /*
  * Ajout d'un nouveau contact
diff --git a/htdocs/lib/functions.inc.php b/htdocs/lib/functions.inc.php
index 28b95899599..2a77df0ae15 100644
--- a/htdocs/lib/functions.inc.php
+++ b/htdocs/lib/functions.inc.php
@@ -1247,6 +1247,57 @@ function dol_loginfunction($notused,$pearstatus)
 	print "\n</body>\n</html>";
 }
 
+/*
+ *    \brief      Vérifie les droits de l'utilisateur
+ *    \param      user      	  Utilisateur courant
+ *    \param      module        Module à vérifier
+ *    \param      objectid      ID du document
+ *    \param      dbtable       Table de la base correspondant au module (optionnel)
+ */
+ function restrictedArea($user, $modulename, $objectid='' , $dbtablename='')
+ {
+ 	global $db;
+ 		
+ 	$user->getrights($modulename);
+ 	$socid = 0;
+ 	
+ 	//si dbtable non défini, même nom que le module
+ 	if (!$dbtable) $dbtablename = $modulename;
+
+ 	if (!$user->rights->$modulename->lire)
+ 	{
+ 		accessforbidden();
+ 		return -1;
+ 	}
+ 	
+ 	if ($user->societe_id > 0)
+ 	{
+    $socid = $user->societe_id;
+  }
+
+  if ($objectid && (!$user->rights->commercial->client->voir || $socid > 0))
+  {
+  	$sql = "SELECT sc.fk_soc, dbt.fk_soc";
+  	$sql .= " FROM ".MAIN_DB_PREFIX."societe_commerciaux as sc, ".MAIN_DB_PREFIX.$dbtablename." as dbt";
+  	$sql .= " WHERE dbt.rowid = ".$objectid;
+    if (!$user->rights->commercial->client->voir && !$socid > 0)
+    {
+    	$sql .= " AND sc.fk_soc = dbt.fk_soc AND sc.fk_user = ".$user->id;
+    }
+    if ($socid > 0) $sql .= " AND dbt.fk_soc = ".$socid;
+
+    if ($db->query($sql))
+    {
+      if ($db->num_rows() == 0)
+      {
+      	accessforbidden();
+      	return -2;
+      }
+    }
+  }
+  return 1;
+}
+
 
 /**
 		\brief      Affiche message erreur de type acces interdit et arrete le programme