[NetworkManager-openconnect] Prevent noise to stdout

[David Woodhouse <dwmw2 src gnome org>]

commit 521b77ff503f4670ccd0b1297cd3b554b659d77f
Author: David Woodhouse <dwmw2 infradead org>
Date:   Thu Apr 28 15:14:31 2022 +0100

    Prevent noise to stdout
    
    Sometimes, a spawned browser may spam stdout. We don't want that.

 auth-dialog/main.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/auth-dialog/main.c b/auth-dialog/main.c
index 650cd2d..99cab7c 100644
--- a/auth-dialog/main.c
+++ b/auth-dialog/main.c
@@ -1964,6 +1964,12 @@ int main (int argc, char **argv)
        GThread *init_thread;
        gchar *key, *value;
        int opt;
+       int param_fd = dup(1);
+       FILE *paramf = fdopen(param_fd, "w");
+
+       /* We don't want stdout from child processes / logging to confuse NM
+        * so redirect it to stderr instead. */
+       dup2(2, 1);
 
        while ((opt = getopt_long(argc, argv, "ru:n:s:i", long_options, NULL))) {
                if (opt < 0)
@@ -2050,9 +2056,9 @@ int main (int argc, char **argv)
        if (g_hash_table_size (_ui_data->secrets) > 0) {
                g_hash_table_iter_init (&iter, _ui_data->secrets);
                while (g_hash_table_iter_next (&iter, (gpointer *)&key, (gpointer *)&value))
-                       printf("%s\n%s\n", key, value);
-               printf("\n\n");
-               fflush(stdout);
+                       fprintf(paramf, "%s\n%s\n", key, value);
+               fprintf(paramf, "\n\n");
+               fflush(paramf);
        }
 
        wait_for_quit ();