[network-manager-openvpn/th/vpn-plugin-debug-bgo766816: 3/6] service: interpret environment variables NM_VPN_LOG_LEVEL and NM_VPN_LOG_SYSLOG

[Thomas Haller <thaller src gnome org>]

commit 86dc31b61fa06c2726f51992a4b0e9258670f1df
Author: Thomas Haller <thaller redhat com>
Date:   Mon May 23 10:37:23 2016 +0200

    service: interpret environment variables NM_VPN_LOG_LEVEL and NM_VPN_LOG_SYSLOG

 src/nm-openvpn-service.c |   32 ++++++++++++++++++++++++++------
 1 files changed, 26 insertions(+), 6 deletions(-)
---
diff --git a/src/nm-openvpn-service.c b/src/nm-openvpn-service.c
index 235b720..63aa868 100644
--- a/src/nm-openvpn-service.c
+++ b/src/nm-openvpn-service.c
@@ -44,9 +44,11 @@
 #include <locale.h>
 #include <pwd.h>
 #include <grp.h>
-#include "glib-unix.h"
+#include <syslog.h>
+#include <glib-unix.h>
 
 #include "utils.h"
+#include "nm-utils/nm-shared-utils.h"
 
 #if !defined(DIST_VERSION)
 # define DIST_VERSION VERSION
@@ -54,6 +56,8 @@
 
 static struct {
        gboolean debug;
+       int log_level;
+       bool log_syslog;
        GSList *pids_pending_list;
 } gl/*obal*/;
 
@@ -167,7 +171,7 @@ static ValidProperty valid_secrets[] = {
 static gboolean
 _LOGD_enabled (void)
 {
-       return gl.debug;
+       return gl.log_level >= LOG_INFO;
 }
 
 #define _LOGD(...) _LOG(FALSE, G_LOG_LEVEL_INFO, __VA_ARGS__)
@@ -1417,11 +1421,19 @@ nm_openvpn_start_openvpn_binary (NMOpenvpnPlugin *plugin,
                add_openvpn_arg (args, "0");
        }
 
-       if (gl.debug) {
+       if (gl.log_level > 0) {
                add_openvpn_arg (args, "--verb");
-               add_openvpn_arg (args, "10");
+               if (gl.log_level >= LOG_DEBUG)
+                       add_openvpn_arg (args, "10");
+               else if (gl.log_level >= LOG_INFO)
+                       add_openvpn_arg (args, "5");
+               else
+                       add_openvpn_arg (args, "2");
        } else {
-               /* Syslog */
+               /* the default level is already "--verb 1", which is fine for us. */
+       }
+
+       if (gl.log_syslog) {
                add_openvpn_arg (args, "--syslog");
                add_openvpn_arg (args, "nm-openvpn");
        }
@@ -1472,7 +1484,7 @@ nm_openvpn_start_openvpn_binary (NMOpenvpnPlugin *plugin,
        /* Up script, called when connection has been established or has been restarted */
        add_openvpn_arg (args, "--up");
        g_object_get (plugin, NM_VPN_SERVICE_PLUGIN_DBUS_SERVICE_NAME, &bus_name, NULL);
-       stmp = g_strdup_printf ("%s%s --bus-name %s %s --", NM_OPENVPN_HELPER_PATH, gl.debug ? " 
--helper-debug" : "",
+       stmp = g_strdup_printf ("%s%s --bus-name %s %s --", NM_OPENVPN_HELPER_PATH, _LOGD_enabled () ? " 
--helper-debug" : "",
                                bus_name, dev_type_is_tap ? "--tap" : "--tun");
        add_openvpn_arg (args, stmp);
        g_free (stmp);
@@ -2030,6 +2042,14 @@ main (int argc, char *argv[])
        }
        g_option_context_free (opt_ctx);
 
+       gl.log_level = _nm_utils_ascii_str_to_int64 (getenv ("NM_VPN_LOG_LEVEL"),
+                                                    10, 0, LOG_DEBUG,
+                                                    gl.debug ? LOG_DEBUG : 0);
+
+       gl.log_syslog = _nm_utils_ascii_str_to_int64 (getenv ("NM_VPN_LOG_SYSLOG"),
+                                                     10, 0, 1,
+                                                     gl.debug ? 0 : 1);
+
        _LOGD ("nm-openvpn-service (version " DIST_VERSION ") starting...");
 
        if (   !g_file_test ("/sys/class/misc/tun", G_FILE_TEST_EXISTS)