使用XML前缀列表指定嵌套命名空间:: CanonicalizeXML

Question

我是（或者说，我使用的Net::SAML2库）试图规范化XML并获取命名空间错误。我有一个印象，这是正确设置前缀列表的问题，但我不知道应该在什么格式。（Net::SAML2似乎试图生成一个列表，但出现空的。）示例代码：

use XML::CanonicalizeXML; 

my $xml = '<saml:Assertion xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" Version="2.0" ID="pfx894bbcab-a4d3-7694-5b56-26dc207e3479" IssueInstant="2014-09-12T01:51:30Z"><saml:Issuer>http://example.com/metadata</saml:Issuer><saml:Subject><saml:NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:transient">bob@example.com</saml:NameID><saml:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"><saml:SubjectConfirmationData NotOnOrAfter="2014-09-12T01:54:30Z" Recipient="{recipient}" InResponseTo="3e19c9272c04531d0c01643749e9dfda" /></saml:SubjectConfirmation></saml:Subject><saml:Conditions NotBefore="2014-09-12T01:48:30Z" NotOnOrAfter="2014-09-12T01:54:30Z"><saml:AudienceRestriction><saml:Audience>{audience}</saml:Audience></saml:AudienceRestriction></saml:Conditions><saml:AuthnStatement AuthnInstant="2014-09-12T01:51:29Z" SessionNotOnOrAfter="2014-09-13T01:51:30Z" SessionIndex="_59f97890-1bff-0132-6393-782bcb56fcaa"><saml:AuthnContext><saml:AuthnContextClassRef>urn:oasis:names:tc:SAML:2.0:ac:classes:PasswordProtectedTransport</saml:AuthnContextClassRef></saml:AuthnContext></saml:AuthnStatement><saml:AttributeStatement><saml:Attribute Name="first_name" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic"><saml:AttributeValue xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string">Billy</saml:AttributeValue></saml:Attribute></saml:AttributeStatement></saml:Assertion>'; 
my $xpath = '<XPath>(//. | //@* | //namespace::*)</XPath>'; 
my $prefixlist = ''; 
my $canon = XML::CanonicalizeXML::canonicalize($xml,$xpath,$prefixlist,1,0); 

产生这些警告：

namespace error : Namespace prefix saml on Assertion is not defined 
ID="pfx894bbcab-a4d3-7694-5b56-26dc207e3479" IssueInstant="2014-09-12T01:51:30Z" 
                      ^
namespace error : Namespace prefix saml on Issuer is not defined 
ab-a4d3-7694-5b56-26dc207e3479" IssueInstant="2014-09-12T01:51:30Z"><saml:Issuer 
                      ^
namespace error : Namespace prefix saml on Subject is not defined 
2T01:51:30Z"><saml:Issuer>http://example.com/metadata</saml:Issuer><saml:Subject 
                      ^
namespace error : Namespace prefix saml on NameID is not defined 
ubject><saml:NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:transient" 
                      ^
namespace error : Namespace prefix saml on SubjectConfirmation is not defined 
:NameID><saml:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer" 
                      ^
namespace error : Namespace prefix saml on SubjectConfirmationData is not defined 
54:30Z" Recipient="{recipient}" InResponseTo="3e19c9272c04531d0c01643749e9dfda" 
                      ^
namespace error : Namespace prefix saml on Conditions is not defined 
:Conditions NotBefore="2014-09-12T01:48:30Z" NotOnOrAfter="2014-09-12T01:54:30Z" 
                      ^
namespace error : Namespace prefix saml on AudienceRestriction is not defined 
4-09-12T01:48:30Z" NotOnOrAfter="2014-09-12T01:54:30Z"><saml:AudienceRestriction 
                      ^
namespace error : Namespace prefix saml on Audience is not defined 
0Z" NotOnOrAfter="2014-09-12T01:54:30Z"><saml:AudienceRestriction><saml:Audience 
                      ^
namespace error : Namespace prefix saml on AuthnStatement is not defined 
fter="2014-09-13T01:51:30Z" SessionIndex="_59f97890-1bff-0132-6393-782bcb56fcaa" 
                      ^
namespace error : Namespace prefix saml on AuthnContext is not defined 
:51:30Z" SessionIndex="_59f97890-1bff-0132-6393-782bcb56fcaa"><saml:AuthnContext 
                      ^
namespace error : Namespace prefix saml on AuthnContextClassRef is not defined 
97890-1bff-0132-6393-782bcb56fcaa"><saml:AuthnContext><saml:AuthnContextClassRef 
                      ^
namespace error : Namespace prefix saml on AttributeStatement is not defined 
ntextClassRef></saml:AuthnContext></saml:AuthnStatement><saml:AttributeStatement 
                      ^
namespace error : Namespace prefix saml on Attribute is not defined 
Name="first_name" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:basic" 
                      ^
namespace error : Namespace prefix saml on AttributeValue is not defined 
Value xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="xs:string" 
                      ^

Answer 1

你错过

xmlns:saml="..." 

的价值？貌似

xmlns:saml="urn:oasis:names:tc:SAML:1.0:assertion" 

或

xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" 

在文档中urn:oasis:names:tc:SAML:2.0:...情况的群众基础，这显然是后者。