qmi-proxy: new '--no-exit' option

This new option will make the proxy to avoid exiting when no connected clients
were found. Without this option, the proxy will end up exiting after 30s without
a valid QmiDevice connected to the proxy, e.g.:

  $ sudo /usr/libexec/qmi-proxy --verbose
  [23 feb 2015, 20:48:35] [Debug] creating UNIX socket service...
  [23 feb 2015, 20:48:35] [Debug] starting UNIX socket service at 'qmi-proxy'...
  [23 feb 2015, 20:49:05] [Debug] UNIX socket service at 'qmi-proxy' stopped
  [23 feb 2015, 20:49:05] [Debug] exiting 'qmi-proxy'...

1 files changed, 14 insertions, 6 deletions

diff --git a/src/qmi-proxy/qmi-proxy.c b/src/qmi-proxy/qmi-proxy.c
index d7e2d1d..b7053b2 100644
--- a/src/qmi-proxy/qmi-proxy.c
+++ b/src/qmi-proxy/qmi-proxy.c
@@ -45,8 +45,13 @@ static guint timeout_id;
 /* Main options */
 static gboolean verbose_flag;
 static gboolean version_flag;
+static gboolean no_exit_flag;
 
 static GOptionEntry main_entries[] = {
+    { "no-exit", 0, 0, G_OPTION_ARG_NONE, &no_exit_flag,
+      "Don't exit after being idle without clients",
+      NULL
+    },
     { "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose_flag,
       "Run action with verbose logs, including the debug ones",
       NULL
@@ -123,7 +128,7 @@ print_version_and_exit (void)
 {
     g_print ("\n"
              PROGRAM_NAME " " PROGRAM_VERSION "\n"
-             "Copyright (2013) Aleksander Morgado\n"
+             "Copyright (2013-2015) Aleksander Morgado\n"
              "License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.html>\n"
              "This is free software: you are free to change and redistribute it.\n"
              "There is NO WARRANTY, to the extent permitted by law.\n"
@@ -201,11 +206,14 @@ int main (int argc, char **argv)
         exit (EXIT_FAILURE);
     }
 
-    proxy_n_clients_changed (proxy);
-    g_signal_connect (proxy,
-                      "notify::" QMI_PROXY_N_CLIENTS,
-                      G_CALLBACK (proxy_n_clients_changed),
-                      NULL);
+    /* Don't exit the proxy when no clients are found */
+    if (!no_exit_flag) {
+        proxy_n_clients_changed (proxy);
+        g_signal_connect (proxy,
+                          "notify::" QMI_PROXY_N_CLIENTS,
+                          G_CALLBACK (proxy_n_clients_changed),
+                          NULL);
+    }
 
     /* Loop */
     loop = g_main_loop_new (NULL, FALSE);