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genprotimg: check return value of BIO_reset

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Add missing return value checks for BIO_reset. Unfortunately, the OpenSSL
documentation says:

"BIO_reset() normally returns 1 for success and 0 or -1 for failure. File BIOs
are an exception, they return 0 for success and -1 for failure."

Github-ID: https://github.com/ibm-s390-linux/s390-tools/issues/112
Reviewed-by: Patrick Steuer <patrick.steuer@de.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Marc Hartmayer
2021-06-23 13:14:53 +00:00
committed by Jan Höppner
parent 71a667fbf0
commit d90344a2d5
1 changed files with 12 additions and 2 deletions
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14
genprotimg/src/utils/crypto.c
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@@ -440,10 +440,14 @@ static int check_signature_algo_match(const EVP_PKEY *pkey, const X509 *subject,
static X509_CRL *load_crl_from_bio(BIO *bio)
{
g_autoptr(X509_CRL) crl = PEM_read_bio_X509_CRL(bio, NULL, 0, NULL);
gint rc;
if (crl)
return g_steal_pointer(&crl);
ERR_clear_error();
BIO_reset(bio);
rc = BIO_reset(bio);
if (rc != 1 || (rc != 0 && BIO_method_type(bio) == BIO_TYPE_FILE))
return NULL;
/* maybe the CRL is stored in DER format */
crl = d2i_X509_CRL_bio(bio, NULL);
@@ -514,6 +518,7 @@ X509 *load_cert_from_file(const char *path, GError **err)
{
g_autoptr(BIO) bio = bio_read_from_file(path);
g_autoptr(X509) cert = NULL;
gint rc;
if (!bio) {
g_set_error(err, PV_CRYPTO_ERROR,
@@ -526,7 +531,12 @@ X509 *load_cert_from_file(const char *path, GError **err)
if (cert)
return g_steal_pointer(&cert);
ERR_clear_error();
BIO_reset(bio);
rc = BIO_reset(bio);
if (rc != 1 || (rc != 0 && BIO_method_type(bio) == BIO_TYPE_FILE)) {
g_set_error(err, PV_CRYPTO_ERROR, PV_CRYPTO_ERROR_READ_CERTIFICATE,
_("unable to load certificate: '%s'"), path);
return NULL;
}
/* maybe the certificate is stored in DER format */
cert = d2i_X509_bio(bio, NULL);