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commit 880e9be1d69fdf4cc8a10998d4181bebe15a5f8b
parent 952de14cd6e89e95c585ffec70938e331e92a6e0
Author: Christian Grothoff <grothoff@gnunet.org>
Date:   Sat, 11 Jul 2026 20:17:24 +0200

restrict IBAN to uppercase-only

Diffstat:
M
src/util/iban.c
 | 
5
+++++

1 file changed, 5 insertions(+), 0 deletions(-)
diff --git a/src/util/iban.c b/src/util/iban.c
@@ -259,6 +259,11 @@ TALER_iban_validate (const char *iban)
   {
     if (isalpha ((unsigned char) ibancpy[i]))
     {
+      if (! isupper ((unsigned char) ibancpy[i]))
+      {
+        GNUNET_free (nbuf);
+        return GNUNET_strdup ("IBAN must use uppercase letters only");
+      }
       if (2 != snprintf (&nbuf[j],
                          3,
                          "%2u",