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Rename some variables related to ident files in hba.{c,h}

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The code that handles authentication for user maps was pretty confusing
with its choice of variable names.  It involves two types of users: a
system user and a Postgres user (well, role), and these were not named
consistently throughout the code that processes the user maps loaded
from pg_ident.conf at authentication.

This commit changes the following things to improve the situation:
- Rename "pg_role" to "pg_user" and "token" to "system_user" in
IndetLine.  These choices are more consistent with the pg_ident.conf
example in the docs, as well.  "token" has been introduced recently in
fc579e1, and it is way worse than the choice before that, "ident_user".
- Switch the order of the fields in IdentLine to map with the order of
the items in the ident files, as of map name, system user and PG user.
- In check_ident_usermap(), rename "regexp_pgrole" to "expanded_pg_user"
when processing a regexp for the system user entry in a user map.  This
variable does not store a regular expression at all: it would be either
a string or a substitution to \1 if the Postgres role is specified as
such.

Author: Jelte Fennema
Discussion: https://postgr.es/m/CAGECzQTkwELHUOAKhvdA+m3tWbUQySHHkExJV8GAZ1pwgbEgXg@mail.gmail.com
This commit is contained in:
Michael Paquier
2023-01-12 14:23:20 +09:00
parent bfd2542001
commit 8607630d74
3 changed files with 44 additions and 44 deletions
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4
src/backend/utils/adt/hbafuncs.c
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@@ -492,8 +492,8 @@ fill_ident_line(Tuplestorestate *tuple_store, TupleDesc tupdesc,
if (ident != NULL)
{
values[index++] = CStringGetTextDatum(ident->usermap);
values[index++] = CStringGetTextDatum(ident->token->string);
values[index++] = CStringGetTextDatum(ident->pg_role);
values[index++] = CStringGetTextDatum(ident->system_user->string);
values[index++] = CStringGetTextDatum(ident->pg_user);
}
else
{