Security plugin: change policy to advisory

Change policy from enforcing to advisory when access is requested
from unknown domain or permitted to unknown domain. Also trunacated
lines to 80 characters, fixed grammar in the warning messages, and
removed trailing spaces and tabs.

In future, it might make sense to make this behaviour a command-line
option. Added a FIXME comment about that.

Change-Id: Iab78d79a8a28e019ec8601265a59d259fd46f9d6
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

1 files changed, 29 insertions, 19 deletions

diff --git a/plugins/msmxattr.c b/plugins/msmxattr.c
index cdc4bd046..b7dc9190b 100644
--- a/plugins/msmxattr.c
+++ b/plugins/msmxattr.c
@@ -825,7 +825,7 @@ int msmSetupDBusPolicies(package_x *package, manifest_x *mfx)
 
 static int msmCheckDomainRequestOrPermit(manifest_x *mfx, const char* domain) 
 {
-    ac_domain_x *defined_ac_domain = NULL; 
+    ac_domain_x *defined_ac_domain = NULL;
     define_x *define = NULL;
     char* name = NULL;
 
@@ -837,41 +837,51 @@ static int msmCheckDomainRequestOrPermit(manifest_x *mfx, const char* domain)
     strncpy(name, domain, strlen(domain));
     strtok(name, ":");  // remove label name if present
     rpmlog(RPMLOG_DEBUG, "label name %s domain name %s \n", domain, name);
-	
+
     HASH_FIND(hh, all_ac_domains, name, strlen(name), defined_ac_domain);
-    if (!defined_ac_domain) { // request or permit for an undefined domain. 
-        rpmlog(RPMLOG_ERR, "A domain name %s hasn't been yet defined by any package. Can't verify if it is allowed\n", name);
-        msmFreePointer((void**)&name);
-        return -1;
-    }
+    if (!defined_ac_domain) // request or permit for an undefined domain.
+        // FIXME: maybe this should be changed to a command-line option that
+        // would be used during the image build?
+        rpmlog(RPMLOG_WARNING, "The domain '%s' has not been yet defined by "\
+               "any package\n");
 
     //now check that this ac_domain can be requested
     if (mfx->defines) {
         LISTHEAD(mfx->defines, define);
         while (define) {
-            rpmlog(RPMLOG_DEBUG, "define->name %s domain %s\n", define->name, name);
+            rpmlog(RPMLOG_DEBUG, "define->name %s domain %s\n", define->name,
+                   name);
             if (strcmp(define->name, name) == 0) {
-                // AC domain access is requested or permitted from the same package where it was defined. 
-                // This case is always allowed
+                // AC domain access is requested or permitted from the same
+                // package where it was defined. This case is always allowed.
                 msmFreePointer((void**)&name);
-                return 0;		
+                return 0;
             }
             define = define->next;
         }
     } 
 
-    // no need to check if developer allowed other packages to request/permit this domain
-    // because this isn't a request to belong to a domain, but request/permit for domain access
-    if (msmIsRequestAllowed(mfx, defined_ac_domain)) {
+    // no need to check if developer allowed other packages to
+    // request/permit this domain because this isn't a request to
+    // belong to a domain, but request/permit for domain access
+    if (!defined_ac_domain)
+        // FIXME: maybe this should be changed to a command-line option that
+        // would be used during the image build?
+        rpmlog(RPMLOG_WARNING, "Request/Permit to access the domain '%s' is "\
+               "unknown\n", name);
+    else if (msmIsRequestAllowed(mfx, defined_ac_domain))
         // request or permit is allowed by domain policy
-        rpmlog(RPMLOG_DEBUG, "Request/Permit to access a domain name %s is allowed based on package sw source\n", name);
-        msmFreePointer((void**)&name);
-        return 0;
-    } else {
-        rpmlog(RPMLOG_ERR, "Request/Permit to access a domain name %s isn't allowed based on package sw source\n", name);
+        rpmlog(RPMLOG_DEBUG, "Request/Permit to access the domain '%s' is "\
+               "allowed based on package SW source\n", name);
+    else {
+        rpmlog(RPMLOG_ERR, "Request/Permit access the domain '%s' is not "\
+               "allowed based on package SW source\n", name);
         msmFreePointer((void**)&name);
         return -1;
     }
+
+    msmFreePointer((void**)&name);
+    return 0;
 }
 
 int msmSetupDefines(struct smack_accesses *smack_accesses, manifest_x *mfx)