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characters in all cases. Formerly we mostly just threw warnings for invalid input, and failed to detect it at all if no encoding conversion was required. The tighter check is needed to defend against SQL-injection attacks as per CVE-2006-2313 (further details will be published after release). Embedded zero (null) bytes will be rejected as well. The checks are applied during input to the backend (receipt from client or COPY IN), so it no longer seems necessary to check in textin() and related routines; any string arriving at those functions will already have been validated. Conversion failure reporting (for characters with no equivalent in the destination encoding) has been cleaned up and made consistent while at it. Also, fix a few longstanding errors in little-used encoding conversion routines: win1251_to_iso, win866_to_iso, euc_tw_to_big5, euc_tw_to_mic, mic_to_euc_tw were all broken to varying extents. Patches by Tatsuo Ishii and Tom Lane. Thanks to Akio Ishida and Yasuo Ohgaki for identifying the security issues. |
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| COPYRIGHT | ||
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| README | ||
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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. The JDBC, ODBC, C++, Python, and Tcl interfaces have been moved to the PostgreSQL Projects Web Site at http://gborg.postgresql.org for separate maintenance. A Perl DBI/DBD driver is available from CPAN. 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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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 ftp://ftp.postgresql.org/pub/. For more information look at our web site located at http://www.postgresql.org/.