Index: openssl/demos/cms/cms_comp.c |
=================================================================== |
--- openssl/demos/cms/cms_comp.c (revision 0) |
+++ openssl/demos/cms/cms_comp.c (revision 0) |
@@ -0,0 +1,61 @@ |
+/* Simple S/MIME compress 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; |
+ |
+ /* |
+ * On OpenSSL 0.9.9 only: |
+ * for streaming set CMS_STREAM |
+ */ |
+ int flags = CMS_STREAM; |
+ |
+ OpenSSL_add_all_algorithms(); |
+ ERR_load_crypto_strings(); |
+ |
+ /* Open content being compressed */ |
+ |
+ in = BIO_new_file("comp.txt", "r"); |
+ |
+ if (!in) |
+ goto err; |
+ |
+ /* compress content */ |
+ cms = CMS_compress(in, NID_zlib_compression, flags); |
+ |
+ if (!cms) |
+ goto err; |
+ |
+ out = BIO_new_file("smcomp.txt", "w"); |
+ if (!out) |
+ goto err; |
+ |
+ /* Write out S/MIME message */ |
+ if (!SMIME_write_CMS(out, cms, in, flags)) |
+ goto err; |
+ |
+ ret = 0; |
+ |
+ err: |
+ |
+ if (ret) |
+ { |
+ fprintf(stderr, "Error Compressing 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; |
+ |
+ } |