fix osmo_identifier_valid(): only allow printable characters
In particular disallow ASCII 0..31 (control characters) and 127 (DEL).
Change-Id: I04469988495af03c881fe81d7786ca7f71636299
diff --git a/src/utils.c b/src/utils.c
index bc5329d..8f56227 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -444,6 +444,8 @@
/* check for 7-bit ASCII */
if (str[i] & 0x80)
return false;
+ if (!isprint((int)str[i]))
+ return false;
/* check for some explicit reserved control characters */
if (strchr(illegal_chars, str[i]))
return false;