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.\" ========================================================================
.\"
.IX Title "OAuth::Lite::Util 3"
.TH OAuth::Lite::Util 3 "2014-01-04" "perl v5.10.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
OAuth::Lite::Util \- utility for OAuth
.SH "SYNPSIS"
.IX Header "SYNPSIS"
.Vb 7
\& use OAuth::Lite::Util qw(
\& gen_random_key
\& encode_param
\& decode_param
\& create_signature_base_string
\& parse_auth_header
\& );
\&
\& my $random = gen_random_key(8);
\& my $enocded = encode_param($param);
\& my $deocded = decode_param($encoded);
\&
\& my $base_string = create_signature_base_string(\*(AqGET\*(Aq,
\& \*(Aqhttp://example.com/path?query\*(Aq, $params);
\&
\& my $header = q{OAuth realm="http://example.com/api/resource", oauth_consumer_key="hogehoge", ... };
\& my ($realm, $oauth_params) = parse_auth_header($header);
\& say $realm;
\& say $oauth_params\->{oauth_consumer_key};
\& say $oauth_params\->{oauth_version};
\& ...
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Utilty functions for OAuth are implemented here.
.SH "PAY ATTENTION"
.IX Header "PAY ATTENTION"
If you use OAuth 1.31 or older version, its has invalid way to normalize params.
(when there are two or more same key and they contain \s-1ASCII\s0 and non \s-1ASCII\s0 value)
.PP
But the many services have already supported deprecated version,
and the correct way breaks backward compatibility.
So, from 1.32, supported both correct and deprecated method.
.PP
use \f(CW$OAuth::Lite::USE_DEPRECATED_NORMALIZER\fR to switch behaviour.
Currently 1 is set by default to keep backward compatibility.
.PP
.Vb 4
\& use OAuth::Lite::Util;
\& use OAuth::Lite;
\& $OAuth::Lite::USE_DEPRECATED_NORMALIZER = 0;
\& ...
.Ve
.SH "METHODS"
.IX Header "METHODS"
.SS "gen_random_key($length)"
.IX Subsection "gen_random_key($length)"
Generate random octet string.
You can indicate the byte-length of generated string. (10 is set by default)
If 10 is passed, returns 20\-length octet string.
.PP
.Vb 3
\& use OAuth::Lite::Util qw(gen_random_key);
\& my $key1 = gen_random_key();
\& my $key2 = gen_random_key();
.Ve
.SS "encode_param($param)"
.IX Subsection "encode_param($param)"
Encode parameter according to the way defined in OAuth Core spec.
.SS "decode_param($encoded_param)"
.IX Subsection "decode_param($encoded_param)"
Decode the encoded parameter.
.ie n .SS "create_signature_base_string($http_method, $request_uri, $params);"
.el .SS "create_signature_base_string($http_method, \f(CW$request_uri\fP, \f(CW$params\fP);"
.IX Subsection "create_signature_base_string($http_method, $request_uri, $params);"
.Vb 9
\& my $method = "GET";
\& my $uri = "http://example.com/api/for/some\-resource";
\& my $parmas = {
\& oauth_consumer_key => \*(Aqfoo\-bar\*(Aq,
\& oauth_signature_method => \*(AqHMAC\-SHA1\*(Aq,
\& oauth_version => \*(Aq1.0\*(Aq,
\& ...
\& };
\& my $base_string = create_signature_base_string($method, $uri, $params);
.Ve
.SS "normalize_request_url($url);"
.IX Subsection "normalize_request_url($url);"
Normalize url according to the way the OAuth Core spec defines.
.PP
.Vb 6
\& my $string = normalize_request_url(\*(Aqhttp://Example.com:80/path?query\*(Aq);
\& # http://example.com/path
\& my $string = normalize_request_url(\*(Aqhttps://Example.com:443/path?query\*(Aq);
\& # https://example.com/path
\& my $string = normalize_request_url(\*(Aqhttp://Example.com:8080/path?query\*(Aq);
\& # http://example.com:8080/path
.Ve
.SS "normalize_params($params);"
.IX Subsection "normalize_params($params);"
Sort and encode params and concatenates them
according to the way OAuth Core spec defines.
.PP
.Vb 3
\& my $string = normalize_params({
\& a => 1, c => \*(Aqhi%20there\*(Aq, f => [25, 50, \*(Aqa\*(Aq], z => [ \*(Aqp\*(Aq, \*(Aqt\*(Aq ]
\& });
.Ve
.SS "parse_auth_header($header)"
.IX Subsection "parse_auth_header($header)"
Parse authorization/www\-authentication header for OAuth.
And return the realm and other params.
.PP
.Vb 7
\& # service provider side
\& my $header = $r\->headers_in\->{Authorization};
\& my ($realm, $params) = parse_auth_header($header);
\& say $params\->{oauth_token};
\& say $params\->{oauth_consumer_key};
\& say $params\->{oauth_signature_method};
\& ...
\&
\& # consumer side
\& my $header = $res\->header(\*(AqWWW\-Authenticate\*(Aq);
\& my ($realm) = parse_auth_header($header);
.Ve
.SS "build_auth_header(%params)"
.IX Subsection "build_auth_header(%params)"
.Vb 5
\& my $header = build_auth_header($realm, {
\& oauth_consumer_key => \*(Aq...\*(Aq,
\& oauth_signature_method => \*(Aq...\*(Aq,
\& ... and other oauth params
\& });
.Ve
.SH "AUTHOR"
.IX Header "AUTHOR"
Lyo Kato, \f(CW\*(C`lyo.kato _at_ gmail.com\*(C'\fR
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself, either Perl version 5.8.6 or,
at your option, any later version of Perl 5 you may have available.
Copyright 2K16 - 2K18 Indonesian Hacker Rulez
;?>)