<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 12 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:宋体;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"\@宋体";
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:宋体;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.hoenzb
{mso-style-name:hoenzb;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Courier New";
color:black;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 90.0pt 72.0pt 90.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="ZH-CN" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New";color:black">Currently, Nova API achieve this feature based on the database’s REGEX support. Do you have advice on alternative way to achieve it?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">----------<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">zhangleiqiang (Trump)<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">Best Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-family:"Courier New";color:black"><o:p> </o:p></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt">
<div>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> laserjetyang [mailto:laserjetyang@gmail.com]
<br>
<b>Sent:</b> Tuesday, April 29, 2014 1:49 PM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [Cinder] cinder not support query volume/snapshot with regular expression<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US">It looks to me the Nova API will be dangerous source of DoS attacks due to the regexp?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-US">On Mon, Apr 28, 2014 at 7:04 PM, Duncan Thomas <<a href="mailto:duncan.thomas@gmail.com" target="_blank">duncan.thomas@gmail.com</a>> wrote:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Regex matching in APIs can be a dangerous source of DoS attacks - see<br>
<a href="http://en.wikipedia.org/wiki/ReDoS" target="_blank">http://en.wikipedia.org/wiki/ReDoS</a>. Unless this is mitigated sensibly,<br>
I will continue to resist any cinder patch that adds them.<br>
<br>
Glob matches might be safer?<o:p></o:p></span></p>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="EN-US"><br>
On 26 April 2014 05:02, Zhangleiqiang (Trump) <<a href="mailto:zhangleiqiang@huawei.com">zhangleiqiang@huawei.com</a>> wrote:<br>
> Hi, all:<br>
><br>
> I see Nova allows search instances by name, ip and ip6 fields which can be normal string and regular expression:<br>
><br>
> [stack@leiqzhang-stack cinder]$ nova help list<br>
><br>
> List active servers.<br>
><br>
> Optional arguments:<br>
> --ip <ip-regexp> Search with regular expression match by IP address<br>
> (Admin only).<br>
> --ip6 <ip6-regexp> Search with regular expression match by IPv6 address<br>
> (Admin only).<br>
> --name <name-regexp> Search with regular expression match by name<br>
> --instance-name <name-regexp> Search with regular expression match by server name<br>
> (Admin only).<br>
><br>
> I think it is also needed for Cinder when query the volume/snapshot/backup by name. Any advice?<br>
><br>
> ----------<br>
> zhangleiqiang (Trump)<br>
><br>
> Best Regards<br>
><br>
><br>
> _______________________________________________<br>
> OpenStack-dev mailing list<br>
> <a href="mailto:OpenStack-dev@lists.openstack.org">OpenStack-dev@lists.openstack.org</a><br>
> <a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev" target="_blank">
http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev</a><br>
<br>
<br>
<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span class="hoenzb"><span lang="EN-US" style="color:#888888">--</span></span><span lang="EN-US" style="color:#888888"><br>
<span class="hoenzb">Duncan Thomas</span></span><span lang="EN-US"><o:p></o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span lang="EN-US"><br>
_______________________________________________<br>
OpenStack-dev mailing list<br>
<a href="mailto:OpenStack-dev@lists.openstack.org">OpenStack-dev@lists.openstack.org</a><br>
<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev</a><o:p></o:p></span></p>
</div>
</div>
</div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
</div>
</div>
</div>
</body>
</html>