Use fopen() and BIO_new_fd() instead of BIO_new_file so that a possible

open error can be better logged to the operator. The cryptowarnx function
logs warnings is a less optimal way (mainly because of OpenSSL error stacks).
OK benno@ deraadt@

usr.sbin/rpki-client/cert.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: cert.c,v 1.14 2020/02/26 02:35:08 deraadt Exp $ */
+/*	$OpenBSD: cert.c,v 1.15 2020/04/02 09:16:43 claudio Exp $ */
 /*
  * Copyright (c) 2019 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -930,12 +930,18 @@ cert_parse_inner(X509 **xp, const char *fn, const unsigned char *dgst, int ta)
 	ASN1_OBJECT	*obj;
 	struct parse	 p;
 	BIO		*bio = NULL, *shamd;
+	FILE		*f;
 	EVP_MD		*md;
 	char		 mdbuf[EVP_MAX_MD_SIZE];
 
 	*xp = NULL;
 
-	if ((bio = BIO_new_file(fn, "rb")) == NULL) {
+	if ((f = fopen(fn, "rb")) == NULL) {
+		warn("%s", fn);
+		return NULL;
+	}
+
+	if ((bio = BIO_new_fp(f, BIO_CLOSE)) == NULL) {
 		if (verbose > 0)
 			cryptowarnx("%s: BIO_new_file", fn);
 		return NULL;

usr.sbin/rpki-client/cms.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: cms.c,v 1.6 2019/11/29 05:14:11 benno Exp $ */
+/*	$OpenBSD: cms.c,v 1.7 2020/04/02 09:16:43 claudio Exp $ */
 /*
  * Copyright (c) 2019 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -42,6 +42,7 @@ cms_parse_validate(X509 **xp, const char *fn,
 	ASN1_OCTET_STRING	**os = NULL;
 	BIO			*bio = NULL, *shamd;
 	CMS_ContentInfo		*cms;
+	FILE			*f;
 	char			 buf[128], mdbuf[EVP_MAX_MD_SIZE];
 	int			 rc = 0, sz;
 	STACK_OF(X509)		*certs = NULL;
@@ -55,10 +56,13 @@ cms_parse_validate(X509 **xp, const char *fn,
 	 * This is usually fopen() failure, so let it pass through to
 	 * the handler, which will in turn ignore the entity.
 	 */
+	if ((f = fopen(fn, "rb")) == NULL) {
+		warn("%s", fn);
+		return NULL;
+	}
 
-	if ((bio = BIO_new_file(fn, "rb")) == NULL) {
-		if (verbose > 0)
-			cryptowarnx("%s: BIO_new_file", fn);
+	if ((bio = BIO_new_fp(f, BIO_CLOSE)) == NULL) {
+		cryptowarnx("%s: BIO_new_fp", fn);
 		return NULL;
 	}
 

usr.sbin/rpki-client/crl.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: crl.c,v 1.7 2019/11/29 04:40:04 claudio Exp $ */
+/*	$OpenBSD: crl.c,v 1.8 2020/04/02 09:16:43 claudio Exp $ */
 /*
  * Copyright (c) 2019 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -36,10 +36,16 @@ crl_parse(const char *fn, const unsigned char *dgst)
 	int		 rc = 0, sz;
 	X509_CRL	*x = NULL;
 	BIO		*bio = NULL, *shamd;
+	FILE		*f;
 	EVP_MD		*md;
 	char		 mdbuf[EVP_MAX_MD_SIZE];
 
-	if ((bio = BIO_new_file(fn, "rb")) == NULL) {
+	if ((f = fopen(fn, "rb")) == NULL) {
+		warn("%s", fn);
+		return NULL;
+	}
+
+	if ((bio = BIO_new_fp(f, BIO_CLOSE)) == NULL) {
 		if (verbose > 0)
 			cryptowarnx("%s: BIO_new_file", fn);
 		return NULL;