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-rw-r--r--src/utils.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/utils.c b/src/utils.c
index bc5329d8..8f56227e 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -444,6 +444,8 @@ bool osmo_identifier_valid(const char *str)
/* 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;