1 /* Simple S/MIME uncompression example */
2 #include <openssl/pem.h>
3 #include <openssl/cms.h>
4 #include <openssl/err.h>
5
main(int argc,char ** argv)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 fprintf(stderr, "Error Uncompressing Data\n");
42 ERR_print_errors_fp(stderr);
43 }
44
45 if (cms)
46 CMS_ContentInfo_free(cms);
47
48 if (in)
49 BIO_free(in);
50 if (out)
51 BIO_free(out);
52
53 return ret;
54
55 }
56