an SSL_CTX's session cache, it is necessary to compare the ssl_version at
the same time (a conflict is defined, courtesy of SSL_SESSION_cmp(), as a
matching id/id_length pair and a matching ssl_version). However, the
SSL_SESSION that will result from the current negotiation does not
necessarily have the same ssl version as the "SSL_METHOD" in use by the
SSL_CTX - part of the work in a handshake is to agree on an ssl version!

This is fixed by having the check function accept an SSL pointer rather
than the SSL_CTX it belongs to.

[Thanks to Lutz for illuminating the full extent of my stupidity]

Define the right macro for Linux and other GNU-based systems to get a correct declaration of strdup()

really see why we need to define these function pointers with MS_FAR
if it's not done cosistently everywhere.

If we decide to support MS_FAR modifiers, it's better to have the
named something more unique for OpenSSL and to define them in e_os2.h.

Define the OPENSSL_NO_* macros as NO_* macros for the sake of applications thathaven't yet been changed

to include (but the OpenSSL_0_9_6-stable branche still has
inconsistencies)

and make all files the depend on it include it without prefixing it
with openssl/.

This means that all Makefiles will have $(TOP) as one of the include
directories.

compared to it has the type size_t.  Included the needed headers to
make that happen.

defined there.

OPENSSL_UNISTD before redefining it, to avoid compiler warnings.

pre-CRYPTO_MEM_LEAK_CB time.

make strcasecmp a macro to _stricmp.

The reason is that some parts are only included when certain other
include files have been included.

Also, it seems that the rest of the OpenSSL code assumes that all
kinds of M$ Windows are MSDOS as well...

there's no point creating an alias for it.

SSL_add_dir_cert_subjects_to_stack is not implemented on WIN32 and
VMS, so declare it the same way.

Rebuild ASN1 error codes to remove unused function and reason codes.

the ID will be padded out to 16 bytes if the callback attempted to generate
a shorter one. The problem is that the uniqueness checking function used in
callbacks may mistakenly think a 9-byte ID is unique when in fact its
padded 16-byte version is not. This makes the checking function detect
SSLv2 cases, and ensures the padded form is checked rather than the shorter
one passed by the callback.

of session IDs. Namely, passing "-id_prefix <text>" will set a
generate_session_id() callback that generates session IDs as random data
with <text> block-copied over the top of the start of the ID. This can be
viewed by watching the session ID s_client's output when it connects.

This is mostly useful for testing any SSL/TLS code (eg. proxies) that wish
to deal with multiple servers, when each of which might be generating a
unique range of session IDs (eg. with a certain prefix).

SSL/TLS session IDs in a server. According to RFC2246, the session ID is an
arbitrary value chosen by the server. It can be useful to have some control
over this "arbitrary value" so as to choose it in ways that can aid in
things like external session caching and balancing (eg. clustering). The
default session ID generation is to fill the ID with random data.

The callback used by default is built in to ssl_sess.c, but registering a
callback in an SSL_CTX or in a particular SSL overrides this. BTW: SSL
callbacks will override SSL_CTX callbacks, and a new SSL structure inherits
any callback set in its 'parent' SSL_CTX. The header comments describe how
this mechanism ticks, and source code comments describe (hopefully) why it
ticks the way it does.

Man pages are on the way ...

[NB: Lutz was also hacking away and helping me to figure out how best to do
this.]

form '#if defined(...) || defined(...) || ...' and '#if !defined(...)
&& !defined(...) && ...'.  This also avoids the growing number of
special cases it was previously handling (some of them wrongly).

example) are declared with some extra linkage information.  This
generates a warning when using the function name as a value to a
regular function pointer with the "correct" definition of the
function.  Therefore, use a macro to cast the appropriate function on
VMS.

strings.h according to X/Open.

was made in a certain sequence.  This change restores the earlier
"chain of command".

callbacks, and their prototypes were consistent as they were. These casts
need reversing.

Also, I personally find line breaks during parameter lists (ie a line
ending in a comma) easier to read at a glance than line breaks at the end
of a function call and before a dereference on the return value (ie a line
ending in a closed-bracket followed by a line starting with "->").

OCSP_CRLID_new and OCSP_crlID_new clash on case-insensitive systems.