Verifies if smb and krb5 are set.

Based on the differences when to use krb5 and when to use smb within the
feed both are mutualy exclusive.

Either use smb, when you have a older system, or krb5 but not both.

ospd_openvas/preferencehandler.py

@@ -32,7 +32,7 @@
 OID_ESXI_AUTH = "1.3.6.1.4.1.25623.1.0.105058"
 OID_SNMP_AUTH = "1.3.6.1.4.1.25623.1.0.105076"
 OID_PING_HOST = "1.3.6.1.4.1.25623.1.0.100315"
-# TODO: check me, check me, check me 
+# TODO: check me, check me, check me
 OID_KRB5_AUTH = "1.3.6.1.4.1.25623.1.81.0"
 
 BOREAS_ALIVE_TEST = "ALIVE_TEST"
@@ -588,11 +588,15 @@ def build_credentials_as_prefs(self, credentials: Dict) -> List[str]:
             added to the redis KB.
         """
         cred_prefs_list = []
+        krb5_set = False
+        smb_set = False
         for credential in credentials.items():
             service = credential[0]
             cred_params = credentials.get(service)
             if not cred_params:
-                logger.warning("No credentials parameter found for service %s", service)
+                logger.warning(
+                    "No credentials parameter found for service %s", service
+                )
                 continue
             cred_type = cred_params.get('type', '')
             username = cred_params.get('username', '')
@@ -664,20 +668,36 @@ def build_credentials_as_prefs(self, credentials: Dict) -> List[str]:
                 )
             # Check servic smb
             elif service == 'smb':
+                if krb5_set:
+                    self.errors.append(
+                        "Kerberos and SMB credentials are mutually exclusive."
+                    )
+                    continue
+                smb_set = True
                 cred_prefs_list.append(
                     f'{OID_SMB_AUTH}:1:entry:SMB login:|||{username}'
                 )
                 cred_prefs_list.append(
                     f'{OID_SMB_AUTH}:2:password:SMB password:|||{password}'
                 )
             elif service == 'krb5':
+                if smb_set:
+                    self.errors.append(
+                        "Kerberos and SMB credentials are mutually exclusive."
+                    )
+                    continue
+                krb5_set = True
                 realm = cred_params.get('realm', '')
                 if not realm:
-                    self.errors.append("Missing realm for Kerberos authentication.")
+                    self.errors.append(
+                        "Missing realm for Kerberos authentication."
+                    )
                     continue
                 kdc = cred_params.get('kdc', '')
                 if not kdc:
-                    self.errors.append("Missing KDC for Kerberos authentication.")
+                    self.errors.append(
+                        "Missing KDC for Kerberos authentication."
+                    )
                     continue
                 cred_prefs_list.append(
                     f'{OID_KRB5_AUTH}:1:entry:KRB5 login:|||{username}'
@@ -688,7 +708,7 @@ def build_credentials_as_prefs(self, credentials: Dict) -> List[str]:
                 cred_prefs_list.append(
                     f'{OID_KRB5_AUTH}:3:entry:KRB5 realm:|||{realm}'
                 )
-                #TODO: add multiple kdcs
+                # TODO: add multiple kdcs
                 cred_prefs_list.append(
                     f'{OID_KRB5_AUTH}:4:entry:KRB5 kdc:|||{kdc}'
                 )