Check the ctx->nested level as we go, to prevent a server from running the client out of stack space. The limit we choose when communicating with authorization servers can't be overly strict, since those servers will continue to add extensions in their JSON documents which we need to correctly ignore. For the SASL communication, we can be more conservative, since there are no defined extensions (and the peer is probably more Postgres code). Reviewed-by: Aleksander Alekseev <aleksander@timescale.com> Discussion: https://postgr.es/m/CAOYmi%2Bm71aRUEi0oQE9ciBnBS8xVtMn3CifaPu2kmJzUfhOZgA%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/.