openvpn plugin: Don't signal an error when no clients are connected.

In the multi1_read() function, an error (zero) was returned when no
clients were currently connected to the OpenVPN server, because the
"read" variable was initialized to zero and the while loop exited before
it was set to one. This is not the intended behavior.

Thanks to @srix for reporting this issue!

Fixes: #731

diff --git a/src/openvpn.c b/src/openvpn.c
index 9ce23b4..2c93a00 100644 (file)
--- a/src/openvpn.c
+++ b/src/openvpn.c
@@ -265,7 +265,7 @@ static int multi1_read (char *name, FILE *fh)
 {
        char buffer[1024];
        char *fields[10];
-       int  fields_num, read = 0, found_header = 0;
+       int  fields_num, found_header = 0;
        long long sum_users = 0;
 
        /* read the file until the "ROUTING TABLE" line is found (no more info after) */
@@ -312,17 +312,15 @@ static int multi1_read (char *name, FILE *fh)
                                                atoll (fields[3])); /* "Bytes Sent" */
                        }
                }
-
-               read = 1;
        }
 
+       if (ferror (fh))
+               return (0);
+
        if (collect_user_count)
-       {
                numusers_submit(name, name, sum_users);
-               read = 1;
-       }
 
-       return (read);
+       return (1);
 } /* int multi1_read */
 
 /* for reading status version 2 */