X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fevp%2Fbio_b64.c;h=f12eac1b55a06b37a49d1d579f1b65d7edb9fca0;hb=c938563a81d48e1d23bddcf9283d4961794db132;hp=a275ef4c7d0a1923b0ca6fe08651ccde6ec43473;hpb=26a3a48d65c7464b400ec1de439994d7f0d25fed;p=oweals%2Fopenssl.git

diff --git a/crypto/evp/bio_b64.c b/crypto/evp/bio_b64.c
index a275ef4c7d..f12eac1b55 100644
--- a/crypto/evp/bio_b64.c
+++ b/crypto/evp/bio_b64.c
@@ -69,7 +69,7 @@ static int b64_read(BIO *h, char *buf, int size);
 static long b64_ctrl(BIO *h, int cmd, long arg1, void *arg2);
 static int b64_new(BIO *h);
 static int b64_free(BIO *data);
-static long b64_callback_ctrl(BIO *h,int cmd,void (*fp)());
+static long b64_callback_ctrl(BIO *h,int cmd,bio_info_cb *fp);
 #define B64_BLOCK_SIZE	1024
 #define B64_BLOCK_SIZE2	768
 #define B64_NONE	0
@@ -370,10 +370,11 @@ static int b64_write(BIO *b, const char *in, int inl)
 		n-=i;
 		}
 	/* at this point all pending data has been written */
+	ctx->buf_off=0;
+	ctx->buf_len=0;
 
 	if ((in == NULL) || (inl <= 0)) return(0);
 
-	ctx->buf_off=0;
 	while (inl > 0)
 		{
 		n=(inl > B64_BLOCK_SIZE)?B64_BLOCK_SIZE:inl;
@@ -383,14 +384,20 @@ static int b64_write(BIO *b, const char *in, int inl)
 			if (ctx->tmp_len > 0)
 				{
 				n=3-ctx->tmp_len;
+				/* There's a teoretical possibility for this */
+				if (n > inl) 
+					n=inl;
 				memcpy(&(ctx->tmp[ctx->tmp_len]),in,n);
 				ctx->tmp_len+=n;
-				n=ctx->tmp_len;
-				if (n < 3)
+				if (ctx->tmp_len < 3)
 					break;
 				ctx->buf_len=EVP_EncodeBlock(
 					(unsigned char *)ctx->buf,
-					(unsigned char *)ctx->tmp,n);
+					(unsigned char *)ctx->tmp,
+					ctx->tmp_len);
+				/* Since we're now done using the temporary
+				   buffer, the length should be 0'd */
+				ctx->tmp_len=0;
 				}
 			else
 				{
@@ -458,7 +465,8 @@ static long b64_ctrl(BIO *b, int cmd, long num, void *ptr)
 		break;
 	case BIO_CTRL_WPENDING: /* More to write in buffer */
 		ret=ctx->buf_len-ctx->buf_off;
-		if ((ret == 0) && (ctx->base64.num != 0))
+		if ((ret == 0) && (ctx->encode != B64_NONE)
+			&& (ctx->base64.num != 0))
 			ret=1;
 		else if (ret <= 0)
 			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
@@ -493,7 +501,7 @@ again:
 				goto again;
 				}
 			}
-		else if (ctx->base64.num != 0)
+		else if (ctx->encode != B64_NONE && ctx->base64.num != 0)
 			{
 			ctx->buf_off=0;
 			EVP_EncodeFinal(&(ctx->base64),
@@ -524,7 +532,7 @@ again:
 	return(ret);
 	}
 
-static long b64_callback_ctrl(BIO *b, int cmd, void (*fp)())
+static long b64_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)
 	{
 	long ret=1;