webserver: reopen stdin from /dev/null.

Having both lacme(8) and its webserver component reading from the same
standard input could yield starvation.

1 files changed, 1 insertions, 0 deletions

diff --git a/lacme b/lacme
index a5ba9f4..e5f8715 100755
--- a/lacme
+++ b/lacme
@@ -374,6 +374,7 @@ sub spawn_webserver() {
         my $pid = fork() // "fork: $!";
         unless ($pid) {
             drop_privileges($conf->{user}, $conf->{group}, $tmpdir);
+            open STDIN, '<', '/dev/null' or die "open(/dev/null): $!";
             set_FD_CLOEXEC($sock, 0);
             $ENV{DEBUG} = $OPTS{debug};
             # use execve(2) rather than a Perl pseudo-process to ensure that