| Index: openssl/doc/crypto/SMIME_read_CMS.pod
|
| ===================================================================
|
| --- openssl/doc/crypto/SMIME_read_CMS.pod (revision 0)
|
| +++ openssl/doc/crypto/SMIME_read_CMS.pod (revision 0)
|
| @@ -0,0 +1,70 @@
|
| +=pod
|
| +
|
| +=head1 NAME
|
| +
|
| + SMIME_read_CMS - parse S/MIME message.
|
| +
|
| +=head1 SYNOPSIS
|
| +
|
| + #include <openssl/cms.h>
|
| +
|
| + CMS_ContentInfo *SMIME_read_CMS(BIO *in, BIO **bcont);
|
| +
|
| +=head1 DESCRIPTION
|
| +
|
| +SMIME_read_CMS() parses a message in S/MIME format.
|
| +
|
| +B<in> is a BIO to read the message from.
|
| +
|
| +If cleartext signing is used then the content is saved in a memory bio which is
|
| +written to B<*bcont>, otherwise B<*bcont> is set to NULL.
|
| +
|
| +The parsed CMS_ContentInfo structure is returned or NULL if an
|
| +error occurred.
|
| +
|
| +=head1 NOTES
|
| +
|
| +If B<*bcont> is not NULL then the message is clear text signed. B<*bcont> can
|
| +then be passed to CMS_verify() with the B<CMS_DETACHED> flag set.
|
| +
|
| +Otherwise the type of the returned structure can be determined
|
| +using CMS_get0_type().
|
| +
|
| +To support future functionality if B<bcont> is not NULL B<*bcont> should be
|
| +initialized to NULL. For example:
|
| +
|
| + BIO *cont = NULL;
|
| + CMS_ContentInfo *cms;
|
| +
|
| + cms = SMIME_read_CMS(in, &cont);
|
| +
|
| +=head1 BUGS
|
| +
|
| +The MIME parser used by SMIME_read_CMS() is somewhat primitive. While it will
|
| +handle most S/MIME messages more complex compound formats may not work.
|
| +
|
| +The parser assumes that the CMS_ContentInfo structure is always base64 encoded
|
| +and will not handle the case where it is in binary format or uses quoted
|
| +printable format.
|
| +
|
| +The use of a memory BIO to hold the signed content limits the size of message
|
| +which can be processed due to memory restraints: a streaming single pass option
|
| +should be available.
|
| +
|
| +=head1 RETURN VALUES
|
| +
|
| +SMIME_read_CMS() returns a valid B<CMS_ContentInfo> structure or B<NULL>
|
| +if an error occurred. The error can be obtained from ERR_get_error(3).
|
| +
|
| +=head1 SEE ALSO
|
| +
|
| +L<ERR_get_error(3)|ERR_get_error(3)>, L<CMS_type(3)|CMS_type(3)>
|
| +L<SMIME_read_CMS(3)|SMIME_read_CMS(3)>, L<CMS_sign(3)|CMS_sign(3)>,
|
| +L<CMS_verify(3)|CMS_verify(3)>, L<CMS_encrypt(3)|CMS_encrypt(3)>
|
| +L<CMS_decrypt(3)|CMS_decrypt(3)>
|
| +
|
| +=head1 HISTORY
|
| +
|
| +SMIME_read_CMS() was added to OpenSSL 0.9.8
|
| +
|
| +=cut
|
|
|