crypto/external/bsd/openssl/dist/demos/cms/cms_uncomp.c

   1 /* Simple S/MIME uncompression example */
   2 #include <openssl/pem.h>
   3 #include <openssl/cms.h>
   4 #include <openssl/err.h>
   5
   6 int main(int argc, char **argv)
   7         {
   8         BIO *in = NULL, *out = NULL;
   9         CMS_ContentInfo *cms = NULL;
  10         int ret = 1;
  11
  12         OpenSSL_add_all_algorithms();
  13         ERR_load_crypto_strings();
  14
  15         /* Open compressed content */
  16
  17         in = BIO_new_file("smcomp.txt", "r");
  18
  19         if (!in)
  20                 goto err;
  21
  22         /* Sign content */
  23         cms = SMIME_read_CMS(in, NULL);
  24
  25         if (!cms)
  26                 goto err;
  27
  28         out = BIO_new_file("smuncomp.txt", "w");
  29         if (!out)
  30                 goto err;
  31
  32         /* Uncompress S/MIME message */
  33         if (!CMS_uncompress(cms, out, NULL, 0))
  34                 goto err;
  35
  36         ret = 0;
  37
  38         err:
  39
  40         if (ret)
  41                 {
  42                 fprintf(stderr, "Error Uncompressing Data\n");
  43                 ERR_print_errors_fp(stderr);
  44                 }
  45
  46         if (cms)
  47                 CMS_ContentInfo_free(cms);
  48
  49         if (in)
  50                 BIO_free(in);
  51         if (out)
  52                 BIO_free(out);
  53
  54         return ret;
  55
  56         }