mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
57 lines
1.9 KiB
Plaintext
57 lines
1.9 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
d2i_SSL_SESSION, i2d_SSL_SESSION - convert SSL_SESSION object from/to ASN1 representation
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/ssl.h>
|
|
|
|
SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, unsigned char **pp, long length);
|
|
int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
d2i_SSL_SESSION() transforms the external ASN1 representation of an SSL/TLS
|
|
session, stored as binary data at location B<pp> with length B<length>, into
|
|
an SSL_SESSION object.
|
|
|
|
i2d_SSL_SESSION() transforms the SSL_SESSION object B<in> into the ASN1
|
|
representation and stores it into the memory location pointed to by B<pp>.
|
|
The length of the resulting ASN1 representation is returned. If B<pp> is
|
|
the NULL pointer, only the length is calculated and returned.
|
|
|
|
=head1 NOTES
|
|
|
|
The SSL_SESSION object is built from several malloc()ed parts, it can
|
|
therefore not be moved, copied or stored directly. In order to store
|
|
session data on disk or into a database, it must be transformed into
|
|
a binary ASN1 representation.
|
|
|
|
When using d2i_SSL_SESSION(), the SSL_SESSION object is automatically
|
|
allocated.
|
|
|
|
When using i2d_SSL_SESSION(), the memory location pointed to by B<pp> must be
|
|
large enough to hold the binary representation of the session. There is no
|
|
known limit on the size of the created ASN1 representation, so the necessary
|
|
amount of space should be obtained by first calling i2d_SSL_SESSION() with
|
|
B<pp=NULL>, and obtain the size needed, then allocate the memory and
|
|
call i2d_SSL_SESSION() again.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
d2i_SSL_SESSION() returns a pointer to the newly allocated SSL_SESSION
|
|
object. In case of failure the NULL-pointer is returned and the error message
|
|
can be retrieved from the error stack.
|
|
|
|
i2d_SSL_SESSION() returns the size of the ASN1 representation in bytes.
|
|
When the session is not valid, B<0> is returned and no operation is performed.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<ssl(3)|ssl(3)>,
|
|
L<SSL_CTX_sess_set_get_cb(3)|SSL_CTX_sess_set_get_cb(3)>
|
|
|
|
=cut
|