From: Jelte Jansen <jeltejan@NLnetLabs.nl>
Date: Mon, 27 Mar 2006 09:10:23 +0000 (+0000)
Subject: apparently if had forgotten to commit this:
X-Git-Tag: release-1.1.0~278
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b02c0b7dedcd56cc8a72234ea5e94aaefc9de6b3;p=thirdparty%2Fldns.git

apparently if had forgotten to commit this:
b64 zero length string special case
---

diff --git a/compat/b64_ntop.c b/compat/b64_ntop.c
index 60de5c98..b2ff41b9 100644
--- a/compat/b64_ntop.c
+++ b/compat/b64_ntop.c
@@ -130,6 +130,15 @@ b64_ntop(uint8_t const *src, size_t srclength, char *target, size_t targsize) {
 	uint8_t input[3];
 	uint8_t output[4];
 	size_t i;
+	
+	if (srclength == 0) {
+		if (targsize > 0) {
+			target[0] = '\0';
+			return 0;
+		} else {
+			return -1;
+		}
+	}
 
 	while (2 < srclength) {
 		input[0] = *src++;
diff --git a/compat/b64_pton.c b/compat/b64_pton.c
index e3ac4ef1..d705ece0 100644
--- a/compat/b64_pton.c
+++ b/compat/b64_pton.c
@@ -139,6 +139,10 @@ b64_pton(char const *src, uint8_t *target, size_t targsize)
 	state = 0;
 	tarindex = 0;
 
+	if (strlen(src) == 0) {
+		return 0;
+	}
+
 	while ((ch = *src++) != '\0') {
 		if (isspace((unsigned char)ch))        /* Skip whitespace anywhere. */
 			continue;