From: Timo Sirainen <tss@iki.fi>
Date: Mon, 23 Aug 2010 18:03:05 +0000 (+0100)
Subject: Added base64_is_valid_char()
X-Git-Tag: 2.0.1~6
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=99469474fdc02e552479977f6b32960a55047f10;p=thirdparty%2Fdovecot%2Fcore.git

Added base64_is_valid_char()
---

diff --git a/src/lib/base64.c b/src/lib/base64.c
index 0d28abbc4d..f3774c1d12 100644
--- a/src/lib/base64.c
+++ b/src/lib/base64.c
@@ -159,3 +159,8 @@ buffer_t *t_base64_decode_str(const char *str)
 	(void)base64_decode(str, len, NULL, buf);
 	return buf;
 }
+
+bool base64_is_valid_char(char c)
+{
+	return b64dec[(uint8_t)c] != 0xff;
+}
diff --git a/src/lib/base64.h b/src/lib/base64.h
index 5f71c746b3..bc99e2274c 100644
--- a/src/lib/base64.h
+++ b/src/lib/base64.h
@@ -20,6 +20,9 @@ int base64_decode(const void *src, size_t src_size,
 /* Decode given string to a buffer allocated from data stack. */
 buffer_t *t_base64_decode_str(const char *str);
 
+/* Returns TRUE if c is a valid base64 encoding character (excluding '=') */
+bool base64_is_valid_char(char c);
+
 /* max. buffer size required for base64_encode() */
 #define MAX_BASE64_ENCODED_SIZE(size) \
 	((size) / 3 * 4 + 2+2)