Updated the PR https://github.com/apache/httpd/pull/179 with r1889009 and 
recent 2.4.x changes.

> Am 20.04.2021 um 12:05 schrieb Stefan Eissing <stefan.eiss...@greenbytes.de>:
> 
> 
> 
>> Am 20.04.2021 um 11:57 schrieb Ruediger Pluem <rpl...@apache.org>:
>> 
>> 
>> 
>> On 4/13/21 3:00 PM, Stefan Eissing wrote:
>>> The PR 179 <https://github.com/apache/httpd/pull/179> has been updated with 
>>> the additions of our OCSP hook support in the core server. In case you did 
>>> not follow it, a short summary of the changes:
>>> 
>>> 1. httpd core offers functions/hooks so that SSL related things 
>>>  can be queried without optional functions. That means all the 
>>>  lookups in modules of the "ssl_is_https(conn_rec *c)" have 
>>>  been converted to direct invocations of "ap_ssl_conn_is_ssl(c)".
>>> 2. The provisioning of SSL certificates for servers, as done by mod_md,
>>>  has also now a central hub in the server. This means other modules
>>>  besides mod_ssl/mod_md can use/offer certificate services.
>>> 3. The OCSP response data that is used in "SSL Stapling" has also now
>>>  a central hub with functions/hooks. That means other SSL modules can
>>>  use mod_md services and another OCSP stapling module may be written
>>>  and installed without changes to SSL modules.
>>> 
>>> All these new server functions/hooks are agnostic of the actual *SSL 
>>> implementation. One might mix modules using OpenSSL with ones using 
>>> libressl or exotics like rustls.
>>> 
>>> 4. mod_ssl has been extended to use these new functions/hooks while 
>>> maintaining its own OPTIONAL functions and support. This should give full 
>>> backward compatibility for 3rd party modules for interop with mod_ssl.
>>> 
>>> 5. mod_md has been extended to use/register at the new core hooks. The PR 
>>> also includes a range of other, unrelated enhancements to mod_md, like 
>>> multiple certificates and EC keys. It would have been possible to separate 
>>> this out, but it would have required more testing combinations and the 
>>> number of branches/repros to juggle are already high enough.
>>> 
>>> As will all github PRs, you can get the diff simply by appending ".diff", 
>>> so <https://github.com/apache/httpd/pull/179.diff> is the whole thing. For 
>>> easier review, I extract the parts related only to the core server and the 
>>> ones only related to mod_ssl and attach them here.
>>> 
>>> I would very much appreciate if some of you find the time to point to my 
>>> mistakes.
>>> 
>> 
>> As it was easier for me I directly commented on the PR.
> 
> Excellent! Will make an update, probably today.
> 
> /Stefan
>> 
>> Regards
>> 
>> RĂ¼diger

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