CMS compressed data examples.

[openssl.git] / demos / cms / cms_uncomp.c

diff --git a/demos/cms/cms_uncomp.c b/demos/cms/cms_uncomp.c
new file mode 100644 (file)
index 0000000..f15ae2f
--- /dev/null
+++ b/demos/cms/cms_uncomp.c
@@ -0,0 +1,56 @@
+/* Simple S/MIME uncompression example */
+#include <openssl/pem.h>
+#include <openssl/cms.h>
+#include <openssl/err.h>
+
+int main(int argc, char **argv)
+       {
+       BIO *in = NULL, *out = NULL;
+       CMS_ContentInfo *cms = NULL;
+       int ret = 1;
+
+       OpenSSL_add_all_algorithms();
+       ERR_load_crypto_strings();
+
+       /* Open compressed content */
+
+       in = BIO_new_file("smcomp.txt", "r");
+
+       if (!in)
+               goto err;
+
+       /* Sign content */
+       cms = SMIME_read_CMS(in, NULL);
+
+       if (!cms)
+               goto err;
+
+       out = BIO_new_file("smuncomp.txt", "w");
+       if (!out)
+               goto err;
+
+       /* Uncompress S/MIME message */
+       if (!CMS_uncompress(cms, out, NULL, 0))
+               goto err;
+
+       ret = 0;
+
+       err:
+
+       if (ret)
+               {
+               fprintf(stderr, "Error Uncompressing Data\n");
+               ERR_print_errors_fp(stderr);
+               }
+
+       if (cms)
+               CMS_ContentInfo_free(cms);
+
+       if (in)
+               BIO_free(in);
+       if (out)
+               BIO_free(out);
+
+       return ret;
+
+       }