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astreamer_tar_parser_content() sent the wrong data pointer when forwarding MEMBER_TRAILER padding to the next streamer. After astreamer_buffer_until() buffers the padding bytes, the 'data' pointer has been advanced past them, but the code passed 'data' instead of bbs_buffer.data. This caused the downstream consumer to receive bytes from after the padding rather than the padding itself, and could read past the end of the input buffer. astreamer_gzip_decompressor_content() only checked for Z_STREAM_ERROR from inflate(), silently ignoring Z_DATA_ERROR (corrupted data) and Z_MEM_ERROR (out of memory). Fix by treating any return other than Z_OK, Z_STREAM_END, and Z_BUF_ERROR as fatal. astreamer_gzip_decompressor_free() missed calling inflateEnd() to release zlib's internal decompression state. astreamer_tar_parser_free() neglected to pfree() the streamer struct itself, leaking it. astreamer_extractor_content() did not check the return value of fclose() when closing an extracted file. A deferred write error (e.g., disk full on buffered I/O) would be silently lost. Discussion: https://postgr.es/m/results/98c6b630-acbb-44a7-97fa-1692ce2b827c@dunslane.net Reviewed-By: Tom Lane <tgl@sss.pgh.pa.us> Backpatch-through: 15
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/.