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From: "Chris D. Peterson" <cpeterson@aventail.com> Subject: Implementation Issues with OpenSSL To: openssl-users@openssl.org Date: Wed, 22 Aug 2001 16:13:17 -0700 The patch included in the original post may improve the internal session list handling (and is therefore worth a seperate investigation). No change to the list handling will however solve the problems of incorrect SSL_SESSION_free() calls. The session list is only one possible point of failure, dangling pointers would also occur for SSL object currently using the session. The correct solution is to only use SSL_SESSION_free() when applicable!
58 lines
1.6 KiB
Plaintext
58 lines
1.6 KiB
Plaintext
=pod
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=head1 NAME
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SSL_set_session - set a TLS/SSL session to be used during TLS/SSL connect
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=head1 SYNOPSIS
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#include <openssl/ssl.h>
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int SSL_set_session(SSL *ssl, SSL_SESSION *session);
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=head1 DESCRIPTION
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SSL_set_session() sets B<session> to be used when the TLS/SSL connection
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is to be established. SSL_set_session() is only useful for TLS/SSL clients.
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When the session is set, the reference count of B<session> is incremented
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by 1. If the session is not reused, the reference count is decremented
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again during SSL_connect(). Whether the session was reused can be queried
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with the L<SSL_session_reused(3)|SSL_session_reused(3)> call.
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If there is already a session set inside B<ssl> (because it was set with
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SSL_set_session() before or because the same B<ssl> was already used for
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a connection), SSL_SESSION_free() will be called for that session.
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=head1 NOTES
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SSL_SESSION objects keep internal link information about the session cache
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list, when being inserted into one SSL_CTX object's session cache.
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One SSL_SESSION object, regardless of its reference count, must therefore
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only be used with one SSL_CTX object (and the SSL objects created
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from this SSL_CTX object).
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=head1 RETURN VALUES
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The following return values can occur:
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=over 4
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=item 0
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The operation failed; check the error stack to find out the reason.
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=item 1
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The operation succeeded.
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=back
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=head1 SEE ALSO
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L<ssl(3)|ssl(3)>, L<SSL_SESSION_free(3)|SSL_SESSION_free(3)>,
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L<SSL_get_session(3)|SSL_get_session(3)>,
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L<SSL_session_reused(3)|SSL_session_reused(3)>,
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L<SSL_CTX_set_session_cache_mode(3)|SSL_CTX_set_session_cache_mode(3)>
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=cut
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