From: Eric Young <eay@pobox.com>
Date: Wed, 2 Apr 2014 18:50:33 +0000 (+0100)
Subject: Fix base64 decoding bug.
X-Git-Tag: OpenSSL_1_0_1g~12
X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff_plain;h=bfc3424d1fbaf684c812c03e3c6cb8d38d2d6f1d

Fix base64 decoding bug.

A short PEM encoded sequence if passed to the BIO, and the file
had 2 \n following would fail.

PR#3289
(cherry picked from commit 10378fb5f4c67270b800e8f7c600cd0548874811)
---

diff --git a/crypto/evp/bio_b64.c b/crypto/evp/bio_b64.c
index 72a2a67277..ac6d441aad 100644
--- a/crypto/evp/bio_b64.c
+++ b/crypto/evp/bio_b64.c
@@ -264,7 +264,7 @@ static int b64_read(BIO *b, char *out, int outl)
 				}
 
 			/* we fell off the end without starting */
-			if (j == i)
+			if ((j == i) && (num == 0))
 				{
 				/* Is this is one long chunk?, if so, keep on
 				 * reading until a new line. */