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SASL exchanges must end with either an AuthenticationOk or an ErrorResponse from the server, and the standard way to produce an ErrorResponse packet is for auth_failed() to call ereport(FATAL). This means that there's no way for a SASL mechanism to suppress the server log entry if the "authentication attempt" was really just a query for authentication metadata, as is done with OAUTHBEARER. Following the example of1f9158ba4, add a FATAL_CLIENT_ONLY elevel. This will allow ClientAuthentication() to choose not to log a particular failure, while still correctly ending the authentication exchange before process exit. (The provenance of this patch is convoluted: since it's a mechanical copy-paste of1f9158ba4, both Zsolt Parragi and I produced nearly identical versions independently, and Andrey Borodin reviewed Zsolt's version. Tom Lane is the author of1f9158ba4, but I don't want to imply that he's signed off on this adaptation. See Discussion.) Reviewed-by: Andrey Borodin <x4mmm@yandex-team.ru> Discussion: https://postgr.es/m/CAN4CZFPim7hUiyb7daNKQPSZ8CvQRBGkVhbvED7yZi8VktSn4Q%40mail.gmail.com
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.