openssl/demos/smime/smver.c
James Muir 86db958835 demos: tidy up makefiles, fix warnings
Update makefiles so that consistent patterns are used.  Object files
are compiled from source using an implicit rule (but using our
CFLAGS); for linking, we give an explicit rule.  Ensure that "make
test" works in each subdirectory (even if it does not actually run any
applications).  The top-level demo makefile now works.

The makefiles are not make-agnostic.  e.g. they use the variable $(RM)
in "clean" recipes, which is defined in gnu-make but may not be
defined in others.

Part of #17806

Testing:

  $ cd demo
  $ make test

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22698)
2023-11-15 08:43:23 +01:00

86 lines
1.9 KiB
C

/*
* Copyright 2007-2023 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/pkcs7.h>
#include <openssl/err.h>
int main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL, *tbio = NULL, *cont = NULL;
X509_STORE *st = NULL;
X509 *cacert = NULL;
PKCS7 *p7 = NULL;
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 signer certificate and private key */
tbio = BIO_new_file("cacert.pem", "r");
if (tbio == NULL)
goto err;
cacert = PEM_read_bio_X509(tbio, NULL, 0, NULL);
if (cacert == NULL)
goto err;
if (!X509_STORE_add_cert(st, cacert))
goto err;
/* Open content being signed */
in = BIO_new_file("smout.txt", "r");
if (in == NULL)
goto err;
/* Sign content */
p7 = SMIME_read_PKCS7(in, &cont);
if (p7 == NULL)
goto err;
/* File to output verified content to */
out = BIO_new_file("smver.txt", "w");
if (out == NULL)
goto err;
if (!PKCS7_verify(p7, NULL, st, cont, out, 0)) {
fprintf(stderr, "Verification Failure\n");
goto err;
}
printf("Verification Successful\n");
ret = EXIT_SUCCESS;
err:
if (ret != EXIT_SUCCESS) {
fprintf(stderr, "Error Verifying Data\n");
ERR_print_errors_fp(stderr);
}
X509_STORE_free(st);
PKCS7_free(p7);
X509_free(cacert);
BIO_free(in);
BIO_free(out);
BIO_free(tbio);
return ret;
}