update-ids-ruleset: Always drop the lock file if it has been created during runtime.

In some situations or if an error happened, the lock file could be
keep on the system. In such a case the IDS page would be locked forever
until user interaction or reboot of the system.

Now the script checks if it has created such a lock and release it when
the script exists.

Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>
Acked-by: Peter Müller <peter.mueller@ipfire.org>

diff --git a/src/scripts/update-ids-ruleset b/src/scripts/update-ids-ruleset
index b3974528dc32363ae3c39595ef8972ca41e906fc..8c5fd37a1b0cfed3e824dc6829fd15a73bc47b0c 100644 (file)
--- a/src/scripts/update-ids-ruleset
+++ b/src/scripts/update-ids-ruleset
@@ -26,6 +26,9 @@ require '/var/ipfire/general-functions.pl';
 require "${General::swroot}/ids-functions.pl";
 require "${General::swroot}/lang.pl";
 
+# Variable to store if the process has written a lockfile.
+my $locked;
+
 # Hash to store the configured providers.
 my %providers = ();
 
@@ -77,6 +80,9 @@ if(&IDS::checkdiskspace()) {
 # Lock the IDS page.
 &IDS::lock_ids_page();
 
+# The script has requested a lock, so set locket to "1".
+$locked = "1";
+
 # Grab the configured providers.
 &General::readhasharray("$IDS::providers_settings_file", \%providers);
 
@@ -114,13 +120,20 @@ foreach my $id (keys %providers) {
 # Set correct ownership for the rulesdir and files.
 &IDS::set_ownership("$IDS::rulespath");
 
-# Unlock the IDS page.
-&IDS::unlock_ids_page();
-
 # Check if the IDS is running.
 if(&IDS::ids_is_running()) {
        # Call suricatactrl to perform a reload.
        &IDS::call_suricatactrl("reload");
 }
 
+# Custom END declaration to release a IDS page lock
+# when the script has created one.
+END {
+       # Check if a lock has been requested.
+       if ($locked) {
+               # Unlock the IDS page.
+               &IDS::unlock_ids_page();
+       }
+}
+
 1;