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 main(int argc,char ** argv)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