验证XSD时perl libXML崩溃

时间:2014-03-03 02:16:10

标签: linux perl debian libxml2 xml-libxml

我正在将应用程序迁移到最新的Debian,并且在针对XSD验证XML时出现奇怪的服务器错误

use strict;
use feature qw( :5.10.0 );

use XML::LibXML;

my $xsd = q{
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="shiporder">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="orderperson" type="xs:string"/>
        <xs:element name="shipto">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="name" type="xs:string"/>
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
      <xs:attribute name="orderid" type="xs:string" use="required"/>
    </xs:complexType>
  </xs:element>
</xs:schema>
};

my $soap=q{
<soap:Envelope
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    soap:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
    xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <shiporder
        orderid="889923"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="shiporder.xsd">
      <orderperson>John Smith</orderperson>
      <shipto>
        <name>Ola Nordmann</name>
      </shipto>
    </shiporder>
  </soap:Body>
</soap:Envelope>
};

my $xmlparser = XML::LibXML->new();
my $doc = $xmlparser->parse_string($soap);
my $nodelist = $doc->getElementsByTagNameNS('http://schemas.xmlsoap.org/soap/envelope/', 'Body');

say $nodelist->[0]->toString();

XML::LibXML::Schema->new(string => $xsd)->validate($nodelist->[0]);

导致

  

*检测到glibc perl:free():指针无效:0x0000000001cca220 * *   ======= Backtrace:========= /lib/x86_64-linux-gnu/libc.so.6(+0x76d76)[0x7fa0edd5fd76]   /usr/lib/perl5/auto/XML/LibXML/LibXML.so(PmmREFCNT_dec+0xa3)[0x7fa0ed27c543]   /usr/lib/perl5/auto/XML/LibXML/LibXML.so(XS_XML_LibXML_Node_DESTROY+0xeb)[0x7fa0ed260a4b]   /usr/lib/libperl.so.5.14(Perl_pp_entersub+0x58c)[0x7fa0ee7ce70c]   /usr/lib/libperl.so.5.14(Perl_runops_standard+0x16)[0x7fa0ee7c5ce6]   /usr/lib/libperl.so.5.14(Perl_call_sv+0x45b)[0x7fa0ee7619db]   /usr/lib/libperl.so.5.14(Perl_sv_clear+0x559)[0x7fa0ee7d4bd9]   /usr/lib/libperl.so.5.14(Perl_sv_free2+0x52)[0x7fa0ee7d5292]   /usr/lib/libperl.so.5.14(Perl_leave_scope+0x122f)[0x7fa0ee7fccef]   /usr/lib/libperl.so.5.14(Perl_pp_leave+0xf2)[0x7fa0ee7cb112]   /usr/lib/libperl.so.5.14(Perl_runops_standard+0x16)[0x7fa0ee7c5ce6]   /usr/lib/libperl.so.5.14(perl_run+0x3a5)[0x7fa0ee767815]   perl的(主+ 0x149)[0x400f89]   /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd)[0x7fa0edd07ead]   perl的[0x400fc1]   =======记忆地图:======== 00400000-00402000 r-xp 00000000 08:01 137813 / usr / bin / perl

     

等等

我认为在尝试释放分配的内存时失败了。我已经尝试过克隆对象,但似乎没有什么能阻止它。这是在干净安装wheezy和jessie

时失败的

2 个答案:

答案 0 :(得分:0)

XML :: LibXML :: Schema 中的验证方法仅适用于整个文档。 libxml2 也提供xmlSchemaValidateOneElement XML :: LibXML 中没有此函数的绑定。

编辑:这已在 XML :: LibXML 2.0112中修复。现在你可以pass nodes to validate

答案 1 :(得分:0)

正如@nwellnhof在一个单独的回答中所说,validate要求将文档作为参数而不是节点

所以我从节点创建了一个新文档,然后验证了

my $xmlparser = XML::LibXML->new();
my $doc = $xmlparser->parse_string($soap);
my ($node) = $doc->findnodes('/soap:Envelope/soap:Body/*');

my $newDoc = XML::LibXML::Document->new("1.0");

$newDoc->setDocumentElement($node->cloneNode(1));
say $newDoc;

XML::LibXML::Schema->new(string => $xsd)->validate($newDoc);