return $user_agent;
}
+sub RedIsWireless() {
+ # This function checks if a network device is a wireless device.
+
+ my %settings = ();
+ &readhash("${General::swroot}/ethernet/settings", \%settings);
+
+ # Find the name of the network device.
+ my $device = $settings{'RED_DEV'};
+
+ # Exit, if no device is configured.
+ return 0 if ($device eq "");
+
+ # Return 1 if the device is a wireless one.
+ my $path = "/sys/class/net/$device/wireless";
+ if (-d $path) {
+ return 1;
+ }
+
+ # Otherwise return zero.
+ return 0;
+}
+
+# Function to read a file with UTF-8 charset.
+sub read_file_utf8 ($) {
+ my ($file) = @_;
+
+ open my $in, '<:encoding(UTF-8)', $file or die "Could not open '$file' for reading $!";
+ local $/ = undef;
+ my $all = <$in>;
+ close $in;
+
+ return $all;
+}
+
+# Function to write a file with UTF-8 charset.
+sub write_file_utf8 ($) {
+ my ($file, $content) = @_;
+
+ open my $out, '>:encoding(UTF-8)', $file or die "Could not open '$file' for writing $!";;
+ print $out $content;
+ close $out;
+
+ return;
+}
+
1;