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libpq-oauth: Print libcurl version with OAUTHDEBUG_UNSAFE_TRACE

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When debugging an OAuth trace, it's helpful to know what version of Curl
is in use. The SSL library that Curl is using (which may not be the one
in use by libpq) is also relevant, and it's just as easy to get, so
print that too.

This is being added post-feature-freeze, with RMT approval, in order to
fix some tests in the face of an upstream Curl regression. A subsequent
commit will make use of it in oauth_validator. Backpatch to 18 as well.

Tested-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CAOYmi%2B%3DkP86t%2BZFFXNQ9G6K4ht7utdmB%3DCzhP%3DZ2wvuBymOTtQ%40mail.gmail.com
Backpatch-through: 18
This commit is contained in:
Jacob Champion 2026-06-17 09:57:20 -07:00
parent 1fb397f730
commit 357e4d64f8
1 changed files with 18 additions and 3 deletions
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21
src/interfaces/libpq-oauth/oauth-curl.c
View file

@ -2666,9 +2666,7 @@ initialize_curl(PGconn *conn)
* PG_BOOL_YES/NO in cases where that's not the final answer.
*/
static volatile PGTernaryBool init_successful = PG_BOOL_UNKNOWN;
#if HAVE_THREADSAFE_CURL_GLOBAL_INIT
curl_version_info_data *info;
#endif
#if !HAVE_THREADSAFE_CURL_GLOBAL_INIT
@ -2716,6 +2714,8 @@ initialize_curl(PGconn *conn)
goto done;
}
info = curl_version_info(CURLVERSION_NOW);
#if HAVE_THREADSAFE_CURL_GLOBAL_INIT
/*
@ -2725,7 +2725,6 @@ initialize_curl(PGconn *conn)
* situation), then double-check to make sure the runtime setting agrees,
* to try to catch silent downgrades.
*/
info = curl_version_info(CURLVERSION_NOW);
if (!(info->features & CURL_VERSION_THREADSAFE))
{
/*
@ -2742,6 +2741,22 @@ initialize_curl(PGconn *conn)
}
#endif
if (oauth_unsafe_debugging_enabled())
{
/*
* Record the version of libcurl and its SSL library when tracing,
* since those are likely to be relevant to network debugging. Neither
* of these strings should be NULL in a useful installation, but
* that's no reason to crash if they are, so provide fallbacks.
*
* Other Curl dependency info might be helpful in the future, too;
* just be sure to check info->age as needed when adding more.
*/
fprintf(stderr, "[libpq] initialized libcurl %s (%s)\n",
info->version ? info->version : "version unknown",
info->ssl_version ? info->ssl_version : "no SSL");
}
init_successful = PG_BOOL_YES;
done: