5 CMS_uncompress - uncompress a CMS CompressedData structure
9 #include <openssl/cms.h>
11 int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out, unsigned int flags);
15 CMS_uncompress() extracts and uncompresses the content from a CMS
16 CompressedData structure B<cms>. B<data> is a BIO to write the content to and
17 B<flags> is an optional set of flags.
19 The B<dcont> parameter is used in the rare case where the compressed content
20 is detached. It will normally be set to NULL.
24 The only currently supported compression algorithm is zlib: if the structure
25 indicates the use of any other algorithm an error is returned.
27 If zlib support is not compiled into OpenSSL then CMS_uncompress() will always
30 The following flags can be passed in the B<flags> parameter.
32 If the B<CMS_TEXT> flag is set MIME headers for type B<text/plain> are deleted
33 from the content. If the content is not of type B<text/plain> then an error is
38 CMS_uncompress() returns either 1 for success or 0 for failure. The error can
39 be obtained from ERR_get_error(3)
43 The lack of single pass processing and the need to hold all data in memory as
44 mentioned in CMS_verify() also applies to CMS_decompress().
48 L<ERR_get_error(3)|ERR_get_error(3)>, L<CMS_compress(3)|CMS_compress(3)>
52 CMS_uncompress() was added to OpenSSL 0.9.8