Avoid symbol collision with aklomp/base64

In static builds, symbol collisions are possible since the functions are
named the same.

Author: saghul

libjwt/base64.c

@@ -70,7 +70,7 @@ static const unsigned char base64de[] = {
 };
 
 unsigned int
-base64_encode(const unsigned char *in, unsigned int inlen, char *out)
+jwt_base64_encode(const unsigned char *in, unsigned int inlen, char *out)
 {
 	int s;
 	unsigned int i;
@@ -119,7 +119,7 @@ base64_encode(const unsigned char *in, unsigned int inlen, char *out)
 }
 
 unsigned int
-base64_decode(const char *in, unsigned int inlen, unsigned char *out)
+jwt_base64_decode(const char *in, unsigned int inlen, unsigned char *out)
 {
 	unsigned int i;
 	unsigned int j;

libjwt/base64.h

@@ -12,14 +12,14 @@
  * return values is out length, exclusive terminating `\0'
  */
 JWT_NO_EXPORT
-extern unsigned int base64_encode(const unsigned char *in, unsigned int inlen,
-				  char *out);
+extern unsigned int jwt_base64_encode(const unsigned char *in,
+	unsigned int inlen, char *out);
 
 /*
  * return values is out length
  */
 JWT_NO_EXPORT
-extern unsigned int base64_decode(const char *in, unsigned int inlen,
+extern unsigned int jwt_base64_decode(const char *in, unsigned int inlen,
 				  unsigned char *out);
 
 #endif /* BASE64_H */

libjwt/jwt.c

@@ -205,7 +205,7 @@ void *jwt_base64uri_decode(const char *src, int *ret_len)
 		// LCOV_EXCL_STOP
 	}
 
-	*ret_len = base64_decode(new, len, buf);
+	*ret_len = jwt_base64_decode(new, len, buf);
 	jwt_freemem(new);
 
 	if (*ret_len <= 0)
@@ -226,7 +226,7 @@ int jwt_base64uri_encode(char **_dst, const char *plain, int plain_len)
 	*_dst = dst;
 
 	/* First, a normal base64 encoding */
-	len = base64_encode((const unsigned char *)plain, plain_len, dst);
+	len = jwt_base64_encode((const unsigned char *)plain, plain_len, dst);
 
 	/* Now for the URI encoding */
 	for (i = 0; i < len; i++) {