+/*
+ * Copyright 2008-2023 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
/* Simple S/MIME verification example */
#include <openssl/pem.h>
#include <openssl/cms.h>
X509_STORE *st = NULL;
X509 *cacert = NULL;
CMS_ContentInfo *cms = NULL;
-
- int ret = 1;
+ int ret = EXIT_FAILURE;
OpenSSL_add_all_algorithms();
ERR_load_crypto_strings();
/* Set up trusted CA certificate store */
st = X509_STORE_new();
+ if (st == NULL)
+ goto err;
/* Read in CA certificate */
tbio = BIO_new_file("cacert.pem", "r");
- if (!tbio)
+ if (tbio == NULL)
goto err;
cacert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
- if (!cacert)
+ if (cacert == NULL)
goto err;
if (!X509_STORE_add_cert(st, cacert))
in = BIO_new_file("smout.txt", "r");
- if (!in)
+ if (in == NULL)
goto err;
/* parse message */
cms = SMIME_read_CMS(in, &cont);
- if (!cms)
+ if (cms == NULL)
goto err;
/* File to output verified content to */
out = BIO_new_file("smver.txt", "w");
- if (!out)
+ if (out == NULL)
goto err;
if (!CMS_verify(cms, NULL, st, cont, out, 0)) {
fprintf(stderr, "Verification Successful\n");
- ret = 0;
-
+ ret = EXIT_SUCCESS;
err:
-
- if (ret) {
+ if (ret != EXIT_SUCCESS) {
fprintf(stderr, "Error Verifying Data\n");
ERR_print_errors_fp(stderr);
}
+ X509_STORE_free(st);
CMS_ContentInfo_free(cms);
X509_free(cacert);
BIO_free(in);