Description:
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Running CentOS 5.1 w/ Apache 2.2.3. Set Apache's umask to 002, ran a dbase create function to create a new dbase file.  When finished, the file permissions were 644 instead of 664.  Initially found this under version 5.1.6, tracked it down in source code, then checked 5.2.6 and the problem is still there.

In the source file php-5.2.6/ext/dbase/dbase.c, find the function 
"dbase_create".  About 30 lines into the function there is a function call  VCWD_OPEN_MODE(Z_STRVAL_PP(filename), O_BINARY|O_RDWR|O_CREAT, 0644) which is responsible for creating the new file.

The error is in the hard-coded third parameter 0644.  This will fail to create the file with expected permissions unless umask is set to 022 (which is normally the default).

This code needs to obtain the umask in effect at the time of the function call, compute the correct mode value, and use that in place of the current hard value 0644.

CentOS 5 PHP is not compiled with dbase enabled by default.  I obtained and installed the source RPM, modified the spec file to 
add " --enable-dbase" to the options used both for building the 
command-line and Apache module forms of PHP.