SSID printing: escape space at beginning end, backslash

To make SSID printing point out spaces at the beginning
and end explicitly escape them with \x20. Also escape
the backslash itself so that it's unambiguous.

diff --git a/util.c b/util.c
index afffeb6b62100c5c23c776f051fde435476d2db4..e03ec2c02fd16a78e490cfadaa925a15c87bcf00 100644 (file)
--- a/util.c
+++ b/util.c
@@ -250,8 +250,11 @@ void print_ssid_escaped(const uint8_t len, const uint8_t *data)
        int i;
 
        for (i = 0; i < len; i++) {
-               if (isprint(data[i]))
+               if (isprint(data[i]) && data[i] != ' ' && data[i] != '\\')
                        printf("%c", data[i]);
+               else if (data[i] == ' ' &&
+                        (i != 0 && i != len -1))
+                       printf(" ");
                else
                        printf("\\x%.2x", data[i]);
        }