Home | History | Annotate | Line # | Download | only in cms 
      1 /*
      2  * Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 /* Simple S/MIME uncompression example */
     11 #include <openssl/pem.h>
     12 #include <openssl/cms.h>
     13 #include <openssl/err.h>
     14 
     15 int main(int argc, char **argv)
     16 {
     17     BIO *in = NULL, *out = NULL;
     18     CMS_ContentInfo *cms = NULL;
     19     int ret = 1;
     20 
     21     OpenSSL_add_all_algorithms();
     22     ERR_load_crypto_strings();
     23 
     24     /* Open compressed content */
     25 
     26     in = BIO_new_file("smcomp.txt", "r");
     27 
     28     if (!in)
     29         goto err;
     30 
     31     /* Sign content */
     32     cms = SMIME_read_CMS(in, NULL);
     33 
     34     if (!cms)
     35         goto err;
     36 
     37     out = BIO_new_file("smuncomp.txt", "w");
     38     if (!out)
     39         goto err;
     40 
     41     /* Uncompress S/MIME message */
     42     if (!CMS_uncompress(cms, out, NULL, 0))
     43         goto err;
     44 
     45     ret = 0;
     46 
     47  err:
     48 
     49     if (ret) {
     50         fprintf(stderr, "Error Uncompressing Data\n");
     51         ERR_print_errors_fp(stderr);
     52     }
     53 
     54     CMS_ContentInfo_free(cms);
     55     BIO_free(in);
     56     BIO_free(out);
     57     return ret;
     58 }
     59