10-03-2006
viewing/information of binary files
Hi all,
Is there a way of viewing a binary file through a UNIX session? Or perhaps viewing information of a binary file through a session?
thanks
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LEARN ABOUT REDHAT
d2i_ssl_session
d2i_SSL_SESSION(3) OpenSSL d2i_SSL_SESSION(3)
NAME
d2i_SSL_SESSION, i2d_SSL_SESSION - convert SSL_SESSION object from/to ASN1 representation
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);
DESCRIPTION
d2i_SSL_SESSION() transforms the external ASN1 representation of an SSL/TLS session, stored as binary data at location pp with length
length, into an SSL_SESSION object.
i2d_SSL_SESSION() transforms the SSL_SESSION object in into the ASN1 representation and stores it into the memory location pointed to by
pp. The length of the resulting ASN1 representation is returned. If pp is the NULL pointer, only the length is calculated and returned.
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. The reference count is 1, so that the session must be
explicitly removed using SSL_SESSION_free(3), unless the SSL_SESSION object is completely taken over, when being called inside the get_ses-
sion_cb() (see SSL_CTX_sess_set_get_cb(3)).
SSL_SESSION objects keep internal link information about the session cache list, when being inserted into one SSL_CTX object's session
cache. One SSL_SESSION object, regardless of its reference count, must therefore only be used with one SSL_CTX object (and the SSL objects
created from this SSL_CTX object).
When using i2d_SSL_SESSION(), the memory location pointed to by 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 call-
ing i2d_SSL_SESSION() with pp=NULL, and obtain the size needed, then allocate the memory and call i2d_SSL_SESSION() again.
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, 0 is returned and no operation is
performed.
SEE ALSO
ssl(3), SSL_SESSION_free(3), SSL_CTX_sess_set_get_cb(3)
0.9.7a 2001-10-12 d2i_SSL_SESSION(3)