paranoid::network::socket(3pm) [debian man page]
Paranoid::Network::Socket(3pm) User Contributed Perl Documentation Paranoid::Network::Socket(3pm) NAME
Paranoid::Network::Socket - Socket wrapper for seemless IPv6 support VERSION
$Id: Socket.pm,v 0.3 2012/05/29 21:38:37 acorliss Exp $ SYNOPSIS
# use Socket; # no longer needed use Paranoid::Network::Socket; use Paranoid::Network::Socket qw(:crlf); $ipv6_enabled = has_ipv6(); DESCRIPTION
This module is a wrapper for Socket(3) and Socket6(3), and is meant to be used in lieu of using those packages directly. Doing so removes any of the version dependent support issues on Perl and its bundled Socket(3) where IPv6 is concerned. Starting in Perl 5.12 the beginnings of IPv6 support emerged in the bundled Socket(3) module, but full IPv6 support didn't arrive until 5.14. Prior versions of Perl required the use of the external Socket6(3) module (available on CPAN). With this module IPv6 support, if available, is brought in automatically at runtime, regardless of where that support is provided. It also makes a default export of inet_pton and inet_ntop, something that Socket(3) only does on request. Finally, this module provides a has_ipv6 function which will return whether your Perl has full IPv6 support. Full support is determined by the presence of sockaddr_in6. All of the regular tag sets provided by either Socket modules are supported by this module. SUBROUTINES
/METHODS has_ipv6 $ipv6_enabled = has_ipv6(); Returns a boolean value denoting whether or not this module has full IPv6 support. DEPENDENCIES
o Socket o Socket6 (optional) BUGS AND LIMITATIONS
AUTHOR
Arthur Corliss (corliss@digitalmages.com) LICENSE AND COPYRIGHT
This software is licensed under the same terms as Perl, itself. Please see http://dev.perl.org/licenses/ for more information. (c) 2005, Arthur Corliss (corliss@digitalmages.com) perl v5.14.2 2012-05-29 Paranoid::Network::Socket(3pm)
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Paranoid(3pm) User Contributed Perl Documentation Paranoid(3pm) NAME
Paranoid - Paranoia support for safer programs VERSION
$Id: Paranoid.pm,v 0.34 2012/05/29 21:40:51 acorliss Exp $ SYNOPSIS
use Paranoid; $errMsg = Paranoid::ERROR; psecureEnv("/bin:/usr/bin"); DESCRIPTION
This collection of modules started out as modules which perform things (debatably) in a safer and taint-safe manner. Since then it's also grown to include functionality that fit into the same framework and conventions of the original modules, including keeping the debug hooks for command-line debugging. All the modules below are intended to be used directly in your programs if you need the functionality they provide. This module does provide one function meant to secure your environment enough to satisfy taint-enabled programs, and as a container which holds the last reported error from any code in the Paranoid framework. SUBROUTINES
/METHODS psecureEnv psecureEnv("/bin:/usr/bin"); This function deletes some of the dangerous environment variables that can be used to subvert perl when being run in setuid applications. It also sets the path, either to the passed argument (if passed) or a default of "/bin:/usr/bin". Paranoid::ERROR $errMsg = Paranoid::ERROR; Paranoid::ERROR = $errMsg; This lvalue function is not exported and must be referenced via the Paranoid namespace. TAINT NOTES
Taint-mode programming can be somewhat of an adventure until you know all the places considered dangerous under perl's taint mode. The following functions should generally have their arguments detainted before using: exec system open glob unlink mkdir chdir rmdir chown chmod umask utime link symlink kill eval truncate ioctl fcntl chroot setpgrp setpriority syscall socket socketpair bind connect DEPENDENCIES
While this module itself doesn't have any external dependencies various child modules do. Please check their documentation for any particulars should you use them. SEE ALSO
The following modules are available for use. You should check their POD for specifics on use: o Paranoid::Args: Command-line argument parsing functions o Paranoid::BerkeleyDB: OO-oriented BerkelyDB access with concurrent access capabilities o Paranoid::Data: Misc. data manipulation functions o Paranoid::Debug: Command-line debugging framework and functions o Paranoid::Filesystem: Filesystem operation functions o Paranoid::Glob: Paranoid Glob objects o Paranoid::Input: Input-related functions (file reading, detainting) o Paranoid::Lockfile: Lockfile support o Paranoid::Log: Unified logging framework and functions o Paranoid::Module: Run-time module loading functions o Paranoid::Network: Network-related functions o Paranoid::Network::IPv4: General IPv4-related functions o Paranoid::Network::IPv6: General IPv6-related functions o Paranoid::Network::Socket: Wrapper module for Socket & Socket6 o Paranoid::Process: Process management functions BUGS AND LIMITATIONS
If your application is sensitive to performance issues then you may be better off not using these modules. The primary focus was on security, robustness, and diagnostics. That said, there's probably a lot of room for improvement on the performance front. AUTHOR
Arthur Corliss (corliss@digitalmages.com) LICENSE AND COPYRIGHT
This software is licensed under the same terms as Perl, itself. Please see http://dev.perl.org/licenses/ for more information. (c) 2005, Arthur Corliss (corliss@digitalmages.com) perl v5.14.2 2012-05-29 Paranoid(3pm)