Use const pointer to source in base64 and hex routines.

[tinc] / src / utils.h

diff --git a/src/utils.h b/src/utils.h
index 648a607..67c94f3 100644 (file)
--- a/src/utils.h
+++ b/src/utils.h
@@ -21,11 +21,11 @@
 #ifndef __TINC_UTILS_H__
 #define __TINC_UTILS_H__
 
-extern int hex2bin(char *src, char *dst, int length);
-extern int bin2hex(char *src, char *dst, int length);
+extern int hex2bin(const char *src, char *dst, int length);
+extern int bin2hex(const char *src, char *dst, int length);
 
-extern int b64encode(char *src, char *dst, int length);
-extern int b64decode(char *src, char *dst, int length);
+extern int b64encode(const char *src, char *dst, int length);
+extern int b64decode(const char *src, char *dst, int length);
 
 #ifdef HAVE_MINGW
 extern const char *winerror(int);