198 lines
6.2 KiB
Groff
198 lines
6.2 KiB
Groff
.\" $NetBSD: SSL_get_session.3,v 1.15 2007/11/27 22:19:39 christos Exp $
|
|
.\"
|
|
.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.3
|
|
.\"
|
|
.\" Standard preamble:
|
|
.\" ========================================================================
|
|
.de Sh \" Subsection heading
|
|
.br
|
|
.if t .Sp
|
|
.ne 5
|
|
.PP
|
|
\fB\\$1\fR
|
|
.PP
|
|
..
|
|
.de Sp \" Vertical space (when we can't use .PP)
|
|
.if t .sp .5v
|
|
.if n .sp
|
|
..
|
|
.de Vb \" Begin verbatim text
|
|
.ft CW
|
|
.nf
|
|
.ne \\$1
|
|
..
|
|
.de Ve \" End verbatim text
|
|
.ft R
|
|
.fi
|
|
..
|
|
.\" Set up some character translations and predefined strings. \*(-- will
|
|
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
|
|
.\" double quote, and \*(R" will give a right double quote. | will give a
|
|
.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to
|
|
.\" do unbreakable dashes and therefore won't be available. \*(C` and \*(C'
|
|
.\" expand to `' in nroff, nothing in troff, for use with C<>.
|
|
.tr \(*W-|\(bv\*(Tr
|
|
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
|
|
.ie n \{\
|
|
. ds -- \(*W-
|
|
. ds PI pi
|
|
. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
|
|
. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
|
|
. ds L" ""
|
|
. ds R" ""
|
|
. ds C` ""
|
|
. ds C' ""
|
|
'br\}
|
|
.el\{\
|
|
. ds -- \|\(em\|
|
|
. ds PI \(*p
|
|
. ds L" ``
|
|
. ds R" ''
|
|
'br\}
|
|
.\"
|
|
.\" If the F register is turned on, we'll generate index entries on stderr for
|
|
.\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index
|
|
.\" entries marked with X<> in POD. Of course, you'll have to process the
|
|
.\" output yourself in some meaningful fashion.
|
|
.if \nF \{\
|
|
. de IX
|
|
. tm Index:\\$1\t\\n%\t"\\$2"
|
|
..
|
|
. nr % 0
|
|
. rr F
|
|
.\}
|
|
.\"
|
|
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
|
|
.\" way too many mistakes in technical documents.
|
|
.hy 0
|
|
.if n .na
|
|
.\"
|
|
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
|
|
.\" Fear. Run. Save yourself. No user-serviceable parts.
|
|
. \" fudge factors for nroff and troff
|
|
.if n \{\
|
|
. ds #H 0
|
|
. ds #V .8m
|
|
. ds #F .3m
|
|
. ds #[ \f1
|
|
. ds #] \fP
|
|
.\}
|
|
.if t \{\
|
|
. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
|
|
. ds #V .6m
|
|
. ds #F 0
|
|
. ds #[ \&
|
|
. ds #] \&
|
|
.\}
|
|
. \" simple accents for nroff and troff
|
|
.if n \{\
|
|
. ds ' \&
|
|
. ds ` \&
|
|
. ds ^ \&
|
|
. ds , \&
|
|
. ds ~ ~
|
|
. ds /
|
|
.\}
|
|
.if t \{\
|
|
. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
|
|
. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
|
|
. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
|
|
. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
|
|
. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
|
|
. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
|
|
.\}
|
|
. \" troff and (daisy-wheel) nroff accents
|
|
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
|
|
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
|
|
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
|
|
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
|
|
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
|
|
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
|
|
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
|
|
.ds ae a\h'-(\w'a'u*4/10)'e
|
|
.ds Ae A\h'-(\w'A'u*4/10)'E
|
|
. \" corrections for vroff
|
|
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
|
|
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
|
|
. \" for low resolution devices (crt and lpr)
|
|
.if \n(.H>23 .if \n(.V>19 \
|
|
\{\
|
|
. ds : e
|
|
. ds 8 ss
|
|
. ds o a
|
|
. ds d- d\h'-1'\(ga
|
|
. ds D- D\h'-1'\(hy
|
|
. ds th \o'bp'
|
|
. ds Th \o'LP'
|
|
. ds ae ae
|
|
. ds Ae AE
|
|
.\}
|
|
.rm #[ #] #H #V #F C
|
|
.\" ========================================================================
|
|
.\"
|
|
.IX Title "SSL_get_session 3"
|
|
.TH SSL_get_session 3 "2005-04-23" "0.9.8e" "OpenSSL"
|
|
.SH "NAME"
|
|
SSL_get_session \- retrieve TLS/SSL session data
|
|
.SH "LIBRARY"
|
|
libcrypto, -lcrypto
|
|
.SH "SYNOPSIS"
|
|
.IX Header "SYNOPSIS"
|
|
.Vb 1
|
|
\& #include <openssl/ssl.h>
|
|
.Ve
|
|
.PP
|
|
.Vb 3
|
|
\& SSL_SESSION *SSL_get_session(const SSL *ssl);
|
|
\& SSL_SESSION *SSL_get0_session(const SSL *ssl);
|
|
\& SSL_SESSION *SSL_get1_session(SSL *ssl);
|
|
.Ve
|
|
.SH "DESCRIPTION"
|
|
.IX Header "DESCRIPTION"
|
|
\&\fISSL_get_session()\fR returns a pointer to the \fB\s-1SSL_SESSION\s0\fR actually used in
|
|
\&\fBssl\fR. The reference count of the \fB\s-1SSL_SESSION\s0\fR is not incremented, so
|
|
that the pointer can become invalid by other operations.
|
|
.PP
|
|
\&\fISSL_get0_session()\fR is the same as \fISSL_get_session()\fR.
|
|
.PP
|
|
\&\fISSL_get1_session()\fR is the same as \fISSL_get_session()\fR, but the reference
|
|
count of the \fB\s-1SSL_SESSION\s0\fR is incremented by one.
|
|
.SH "NOTES"
|
|
.IX Header "NOTES"
|
|
The ssl session contains all information required to re-establish the
|
|
connection without a new handshake.
|
|
.PP
|
|
\&\fISSL_get0_session()\fR returns a pointer to the actual session. As the
|
|
reference counter is not incremented, the pointer is only valid while
|
|
the connection is in use. If \fISSL_clear\fR\|(3) or
|
|
\&\fISSL_free\fR\|(3) is called, the session may be removed completely
|
|
(if considered bad), and the pointer obtained will become invalid. Even
|
|
if the session is valid, it can be removed at any time due to timeout
|
|
during \fISSL_CTX_flush_sessions\fR\|(3).
|
|
.PP
|
|
If the data is to be kept, \fISSL_get1_session()\fR will increment the reference
|
|
count, so that the session will not be implicitly removed by other operations
|
|
but stays in memory. In order to remove the session
|
|
\&\fISSL_SESSION_free\fR\|(3) must be explicitly called once
|
|
to decrement the reference count again.
|
|
.PP
|
|
\&\s-1SSL_SESSION\s0 objects keep internal link information about the session cache
|
|
list, when being inserted into one \s-1SSL_CTX\s0 object's session cache.
|
|
One \s-1SSL_SESSION\s0 object, regardless of its reference count, must therefore
|
|
only be used with one \s-1SSL_CTX\s0 object (and the \s-1SSL\s0 objects created
|
|
from this \s-1SSL_CTX\s0 object).
|
|
.SH "RETURN VALUES"
|
|
.IX Header "RETURN VALUES"
|
|
The following return values can occur:
|
|
.IP "\s-1NULL\s0" 4
|
|
.IX Item "NULL"
|
|
There is no session available in \fBssl\fR.
|
|
.IP "Pointer to an \s-1SSL\s0" 4
|
|
.IX Item "Pointer to an SSL"
|
|
The return value points to the data of an \s-1SSL\s0 session.
|
|
.SH "SEE ALSO"
|
|
.IX Header "SEE ALSO"
|
|
\&\fIssl\fR\|(3), \fISSL_free\fR\|(3),
|
|
\&\fISSL_clear\fR\|(3),
|
|
\&\fISSL_SESSION_free\fR\|(3)
|