06 Apr 2013 17:26:33 UTC
- Distribution: URL-Signature
- Module version: 0.03
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- This version
- Latest versionGARU Breno G. de Oliveira
- SEE ALSO
URL::Signature::Path - Sign your URL's path
use URL::Signature::Path; my $signer = URL::Signature::Path->new( key => 'my-secret-key' ); my $url = $signer->sign('/some/path');
or, from within URL::Signature:
use URL::Signature; my $signer = URL::Signature->new( key => 'my-secret-key', format => 'path', as => 1, );
This module provides path signature for URLs. It is a subset of URL::Signature but can also be used as a stand-alone module if you don't care as much about signature flexibility.
Instantiates a new object. You can set the same attributes as URL::Signatures, but it will force 'format' to be 'path'. The following extra parameters are also available:
as - This option specifies the segment's position in which to inject/extract the authentication code. This option is 0-based, and defaults to 1, meaning the second segment of the provided path should contain the signature.
So, when you say something like:
my $signer = URL::Signature::Path->new( key => 'my-secret-key' ); $signer->validate( 'www.example.com/1234/foo/bar' );
it will split the URL into ('www.example.com', '1234', 'foo', 'bar'), and, since '
as' is set to 1, it will assume '
1234' is the signature to be extracted.
Similarly, if you say:
my $url = $signer->sign( 'www.example.com/foo/bar' );
then it will place the signature on the second segment of the provided path, so
$urlwill stringify to '
CODEis the calculated signature for that path.
Similarly, if you omit the domain (and/or the root of your application) and instead provide just the relative path, it should also append the signature properly:
my $url = $signer->sign( '/foo/bar' );
$url' will stringify to '
Note, however, that for this to work you must provide the path starting with a '/', otherwise it will take the first element of your path to be segment 0:
$url = $signer->sign( 'foo/bar' );
The code above will create your
$uriobject as '
foo/CODE/bar', which is probably NOT what you want.
(Inherited from URL::Signature)
Receives a string containing the URL to be signed. Returns a URI object with the original URL modified to contain the authentication code.
(Inherited from URL::Signature)
Receives a string containing the URL to be validated. Returns false if the URL's auth code is not a match, otherwise returns an URI object containing the original URL minus the authentication code.
validate(), there are a few other methods you may find useful:
Receives a URI object and returns a string containing the authentication code necessary for that object.
my ($code, $new_uri) = $obj->extract( $original_uri );
Receives a URI object and returns two elements:
the extracted signature from the given URI
a new URI object just like the original minus the signature
URL::Signature::Path, it will assume the original uri contains the signature in the position specified by the '
as' parameter set in the constructor. The returned uri will be the same except the signature itself will be removed. For instance:
my $path = URI->new( 'example.com/12345/some/path' ); my ($code, $uri) = $obj->extract( $path ); print $code; # '12345' print "$uri"; # 'example.com/some/path'
my $new_uri = $obj->append( $original_uri, $code );
Receives a URI object and the authentication code to be inserted. Returns a new URI object with the auth code properly appended, according to the position specified by the '
as' parameter set in the constructor. For example:
my $original_uri = URI->new( 'example.com/some/path' ); my $signed_uri = $obj->append( $original_uri, '1234' ); print "$signed_uri"; # 'example.com/1234/some/path'
Module Install Instructions
To install URL::Signature, copy and paste the appropriate command in to your terminal.
perl -MCPAN -e shell install URL::Signature
For more information on module installation, please visit the detailed CPAN module installation guide.