prevent possible buffer overflow

2025-12-05 21:27:13 -06:00 · 2018-07-12 12:58:42 +00:00
parent 8f1e08973d
commit cf5ac5f929
2 changed files with 13 additions and 9 deletions
--- a/base64.h
+++ b/base64.h
@@ -9,3 +9,5 @@ size_t base64_from(u8 *dst,const char *src,size_t slen);
 // validates base32 string and optionally stores length of valid data
 // returns 1 if whole string is good, 0 if string contains invalid data
 int base64_valid(const char *src,size_t *count);
+// aligns data length to something base64 can represent without padding
+#define BASE64_DATA_ALIGN(l) (((l + 2) / 3) * 3)