NAME

       Perl::Critic::Policy::Community::OpenArgs - Always use the three-argument form of open

DESCRIPTION

       The "open()" function may be called in a two-argument form where the filename is parsed to
       determine the mode of opening, which may include piping input or output. (In the one-
       argument form, this filename is retrieved from a global variable, but the same magic is
       used.) This can lead to vulnerabilities if the filename is retrieved from user input or
       could begin or end with a special character. The three-argument form specifies the open
       mode as the second argument, so it is always distinct from the filename.

         open FILE;                   # not ok
         open my $fh, "<$filename";   # not ok
         open my $fh, '<', $filename; # ok

       This policy is similar to the core policy
       Perl::Critic::Policy::InputOutput::ProhibitTwoArgOpen, but additionally prohibits one-
       argument opens.

AFFILIATION

       This policy is part of Perl::Critic::Community.

CONFIGURATION

       This policy is not configurable except for the standard options.

AUTHOR

       Dan Book, "dbook@cpan.org"

COPYRIGHT AND LICENSE

       Copyright 2015, Dan Book.

       This library is free software; you may redistribute it and/or modify it under the terms of
       the Artistic License version 2.0.

SEE ALSO

       Perl::Critic

perl v5.34.0                                2022-07Perl::Critic::Policy::Community::OpenArgs(3pm)