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The following checks are added, to make the SASL infrastructure more aware of defects when implementing new mechanisms: - Detect that no output is generated by a mechanism if an exchange fails in the backend, failing if there is a message waiting to be sent. - Handle zero-length messages in the frontend. The backend handles that already, and SCRAM would complain if sending empty messages as this is not authorized for this mechanism, but other mechanisms may want this capability (the SASL specification allows that). - Make sure that a mechanism generates a message in the middle of the exchange in the frontend. SCRAM, as implemented, respects all these requirements already, and the recent refactoring of SASL done in 9fd8557 helps in documenting that in a cleaner way. Analyzed-by: Jacob Champion Author: Michael Paquier Reviewed-by: Jacob Champion Discussion: https://postgr.es/m/3d2a6f5d50e741117d6baf83eb67ebf1a8a35a11.camel@vmware.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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.