X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fevp%2Fbio_md.c;h=144fdfd56a0ec047d9ccd41bae96ba04ed3ea94e;hb=9587429fa07a34066107e926fbc8708220f058fa;hp=c632dfb20227fec1d6d4bc22dd35267a0b10bd88;hpb=20d2186c87dabec56c6da48961a779843724a019;p=oweals%2Fopenssl.git

diff --git a/crypto/evp/bio_md.c b/crypto/evp/bio_md.c
index c632dfb202..144fdfd56a 100644
--- a/crypto/evp/bio_md.c
+++ b/crypto/evp/bio_md.c
@@ -130,8 +130,8 @@ static int md_read(BIO *b, char *out, int outl)
 		{
 		if (ret > 0)
 			{
-			EVP_DigestUpdate(ctx,(unsigned char *)out,
-				(unsigned int)ret);
+			if (EVP_DigestUpdate(ctx,(unsigned char *)out,
+				(unsigned int)ret)<=0) return (-1);
 			}
 		}
 	BIO_clear_retry_flags(b);
@@ -153,12 +153,19 @@ static int md_write(BIO *b, const char *in, int inl)
 		{
 		if (ret > 0)
 			{
-			EVP_DigestUpdate(ctx,(unsigned char *)in,
-				(unsigned int)ret);
+			if (!EVP_DigestUpdate(ctx,(const unsigned char *)in,
+				(unsigned int)ret))
+				{
+				BIO_clear_retry_flags(b);
+				return 0;
+				}
 			}
 		}
-	BIO_clear_retry_flags(b);
-	BIO_copy_next_retry(b);
+	if(b->next_bio != NULL)
+		{
+		BIO_clear_retry_flags(b);
+		BIO_copy_next_retry(b);
+		}
 	return(ret);
 	}
 
@@ -176,10 +183,11 @@ static long md_ctrl(BIO *b, int cmd, long num, void *ptr)
 		{
 	case BIO_CTRL_RESET:
 		if (b->init)
-			EVP_DigestInit_ex(ctx,ctx->digest, NULL);
+			ret = EVP_DigestInit_ex(ctx,ctx->digest, NULL);
 		else
 			ret=0;
-		ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
+		if (ret > 0)
+			ret=BIO_ctrl(b->next_bio,cmd,num,ptr);
 		break;
 	case BIO_C_GET_MD:
 		if (b->init)
@@ -191,11 +199,13 @@ static long md_ctrl(BIO *b, int cmd, long num, void *ptr)
 			ret=0;
 		break;
 	case BIO_C_GET_MD_CTX:
+		pctx=ptr;
+		*pctx=ctx;
+		b->init = 1;
+		break;
+	case BIO_C_SET_MD_CTX:
 		if (b->init)
-			{
-			pctx=ptr;
-			*pctx=ctx;
-			}
+			b->ptr=ptr;
 		else
 			ret=0;
 		break;
@@ -207,13 +217,15 @@ static long md_ctrl(BIO *b, int cmd, long num, void *ptr)
 
 	case BIO_C_SET_MD:
 		md=ptr;
-		EVP_DigestInit_ex(ctx,md, NULL);
-		b->init=1;
+		ret = EVP_DigestInit_ex(ctx,md, NULL);
+		if (ret > 0)
+			b->init=1;
 		break;
 	case BIO_CTRL_DUP:
 		dbio=ptr;
 		dctx=dbio->ptr;
-		EVP_MD_CTX_copy_ex(dctx,ctx);
+		if (!EVP_MD_CTX_copy_ex(dctx,ctx))
+			return 0;
 		b->init=1;
 		break;
 	default:
@@ -246,7 +258,9 @@ static int md_gets(BIO *bp, char *buf, int size)
 	ctx=bp->ptr;
 	if (size < ctx->digest->md_size)
 		return(0);
-	EVP_DigestFinal_ex(ctx,(unsigned char *)buf,&ret);
+	if (EVP_DigestFinal_ex(ctx,(unsigned char *)buf,&ret)<=0) 
+		return -1;
+		
 	return((int)ret);
 	}