From: Florian Forster <octo@huhu.verplant.org>
Date: Sun, 5 Sep 2010 07:42:40 +0000 (+0200)
Subject: notify_email plugin: Check for "session == NULL" and return gracefully.
X-Git-Tag: collectd-4.9.4~14
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=9ff8f5da48f2602881d64ab6a1c3e38f929bc418

notify_email plugin: Check for "session == NULL" and return gracefully.

I don't know how libesmtp handles NULL pointers and I don't want to take
my chances.
---

diff --git a/src/notify_email.c b/src/notify_email.c
index 10d5ab1b..0aed27f1 100644
--- a/src/notify_email.c
+++ b/src/notify_email.c
@@ -272,6 +272,12 @@ static int notify_email_notification (const notification_t *n,
 
   pthread_mutex_lock (&session_lock);
 
+  if (session == NULL) {
+    /* Initialization failed or we're in the process of shutting down. */
+    pthread_mutex_unlock (&session_lock);
+    return (-1);
+  }
+
   if (!(message = smtp_add_message (session))) {
     pthread_mutex_unlock (&session_lock);
     ERROR ("notify_email plugin: cannot set SMTP message");