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libpq: Remove code for SCM credential authentication

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Support for SCM credential authentication has been removed in the
backend in 9.1, and libpq has kept some code to handle it for
compatibility.

Commit be4585b, that did the cleanup of the backend code, has done
so because the code was not really portable originally.  And, as there
are likely little chances that this is used these days, this removes the
remaining code from libpq.  An error will now be raised by libpq if
attempting to connect to a server that returns AUTH_REQ_SCM_CREDS,
instead.

References to SCM credential authentication are removed from the
protocol documentation.  This removes some meson and configure checks.

Author: Michael Paquier
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/ZBLH8a4otfqgd6Kn@paquier.xyz
This commit is contained in:
Michael Paquier 2023-03-17 10:52:26 +09:00
parent 10b6745d31
commit 98ae2c84a4
10 changed files with 1 additions and 178 deletions
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16
configure vendored
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@ -15181,22 +15181,6 @@ cat >>confdefs.h <<_ACEOF
_ACEOF
ac_fn_c_check_type "$LINENO" "struct cmsgcred" "ac_cv_type_struct_cmsgcred" "#include <sys/socket.h>
#include <sys/param.h>
#ifdef HAVE_SYS_UCRED_H
#include <sys/ucred.h>
#endif
"
if test "x$ac_cv_type_struct_cmsgcred" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_STRUCT_CMSGCRED 1
_ACEOF
fi
ac_fn_c_check_type "$LINENO" "struct option" "ac_cv_type_struct_option" "#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif