Provided by: libdata-validate-uri-perl_0.06-1_all 
NAME
Data::Validate::URI - common url validation methods
SYNOPSIS
use Data::Validate::URI qw(is_uri);
if(is_uri($suspect)){
print "Looks like an URI\n";
} else {
print "Not a URI\n";
}
# or as an object
my $v = Data::Validate::URI->new();
die "not a URI" unless ($v->is_uri('foo'));
DESCRIPTION
This module collects common URI validation routines to make input validation, and
untainting easier and more readable.
All functions return an untainted value if the test passes, and undef if it fails. This
means that you should always check for a defined status explicitly. Don't assume the
return will be true.
The value to test is always the first (and often only) argument.
There are a number of other URI validation modules out there as well (see below.) This
one focuses on being fast, lightweight, and relatively 'real-world'. i.e. it's good if
you want to check user input, and don't need to parse out the URI/URL into chunks.
Right now the module focuses on HTTP URIs, since they're arguably the most common. If you
have a specialized scheme you'd like to have supported, let me know.
FUNCTIONS
new - constructor for OO usage
new();
Description
Returns a Data::Validator::URI object. This lets you access all the validator
function calls as methods without importing them into your namespace or using the
clumsy Data::Validate::URI::function_name() format.
Arguments
None
Returns
Returns a Data::Validate::URI object
is_uri - is the value a well-formed uri?
is_uri($value);
Description
Returns the untainted URI if the test value appears to be well-formed. Note that
you may really want one of the more practical methods like is_http_uri or
is_https_uri, since the URI standard (RFC 3986) allows a lot of things you
probably don't want.
Arguments
$value
The potential URI to test.
Returns
Returns the untainted URI on success, undef on failure.
Notes, Exceptions, & Bugs
This function does not make any attempt to check whether the URI is accessible or
'makes sense' in any meaningful way. It just checks that it is formatted
correctly.
is_http_uri - is the value a well-formed HTTP uri?
is_http_uri($value);
Description
Specialized version of is_uri() that only likes http:// urls. As a result, it can
also do a much more thorough job validating. Also, unlike is_uri() it is more
concerned with only allowing real-world URIs through. Things like relative
hostnames are allowed by the standards, but probably aren't wise. Conversely,
null paths aren't allowed per RFC 2616 (should be '/' instead), but are allowed by
this function.
This function only works for fully-qualified URIs. /bob.html won't work. See RFC
3986 for the appropriate method to turn a relative URI into an absolute one given
its context.
Returns the untainted URI if the test value appears to be well-formed.
Note that you probably want to either call this in combo with is_https_uri(). i.e.
print "Good" if(is_http_uri($uri) || is_https_uri($uri));
or use the convenience method is_web_uri which is equivalent.
Arguments
$value
The potential URI to test.
Returns
Returns the untainted URI on success, undef on failure.
Notes, Exceptions, & Bugs
This function does not make any attempt to check whether the URI is accessible or
'makes sense' in any meaningful way. It just checks that it is formatted
correctly.
is_https_uri - is the value a well-formed HTTPS uri?
is_https_uri($value);
Description
See is_http_uri() for details. This version only likes the https URI scheme.
Otherwise it's identical to is_http_uri()
Arguments
$value
The potential URI to test.
Returns
Returns the untainted URI on success, undef on failure.
Notes, Exceptions, & Bugs
This function does not make any attempt to check whether the URI is accessible or
'makes sense' in any meaningful way. It just checks that it is formatted
correctly.
is_web_uri - is the value a well-formed HTTP or HTTPS uri?
is_web_uri($value);
Description
This is just a convinience method that combines is_http_uri and is_https_uri to
accept most common real-world URLs.
Arguments
$value
The potential URI to test.
Returns
Returns the untainted URI on success, undef on failure.
Notes, Exceptions, & Bugs
This function does not make any attempt to check whether the URI is accessible or
'makes sense' in any meaningful way. It just checks that it is formatted
correctly.
is_tel_uri - is the value a well-formed telephone uri?
is_tel_uri($value);
Description
Specialized version of is_uri() that only likes tel: urls. As a result, it can
also do a much more thorough job validating according to RFC 3966.
Returns the untainted URI if the test value appears to be well-formed.
Arguments
$value
The potential URI to test.
Returns
Returns the untainted URI on success, undef on failure.
Notes, Exceptions, & Bugs
This function does not make any attempt to check whether the URI is accessible or
'makes sense' in any meaningful way. It just checks that it is formatted
correctly.
SEE ALSO
URI, RFC 3986, RFC 3966, RFC 4694, RFC 4759, RFC 4904
AUTHOR
Richard Sonnen <sonnen@richardsonnen.com>.
is_tel_uri by David Dick <ddick@cpan.org>.
COPYRIGHT
Copyright (c) 2005 Richard Sonnen. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same
terms as Perl itself.