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Provide a TLS init hook

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The default hook function sets the default password callback function.
In order to allow preloaded libraries to have an opportunity to override
the default, TLS initialization if now delayed slightly until after
shared preloaded libraries have been loaded.

A test module is provided which contains a trivial example that decodes
an obfuscated password for an SSL certificate.

Author: Andrew Dunstan
Reviewed By: Andreas Karlsson, Asaba Takanori
Discussion: https://postgr.es/m/04116472-818b-5859-1d74-3d995aab2252@2ndQuadrant.com
This commit is contained in:
Andrew Dunstan
2020-03-25 17:13:17 -04:00
parent ffd398021c
commit 896fcdb230
11 changed files with 292 additions and 31 deletions
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22
src/backend/postmaster/postmaster.c
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@@ -972,17 +972,6 @@ PostmasterMain(int argc, char *argv[])
*/
LocalProcessControlFile(false);
/*
* Initialize SSL library, if specified.
*/
#ifdef USE_SSL
if (EnableSSL)
{
(void) secure_initialize(true);
LoadedSSL = true;
}
#endif
/*
* Register the apply launcher. Since it registers a background worker,
* it needs to be called before InitializeMaxBackends(), and it's probably
@@ -996,6 +985,17 @@ PostmasterMain(int argc, char *argv[])
*/
process_shared_preload_libraries();
/*
* Initialize SSL library, if specified.
*/
#ifdef USE_SSL
if (EnableSSL)
{
(void) secure_initialize(true);
LoadedSSL = true;
}
#endif
/*
* Now that loadable modules have had their chance to register background
* workers, calculate MaxBackends.