[libvirt] [PATCH 2/4] conf: Fix parsing python style triple quotes
Eric Blake
eblake at redhat.com
Fri Nov 19 20:38:47 UTC 2010
On 11/19/2010 09:15 AM, Cole Robinson wrote:
> An incorrect check broke matching the closing set of quotes. Update
> tests to cover this case for XM config files, and update the domain schema
> to allow more path characters.
>
> - <param name="pattern">/[a-zA-Z0-9_\.\+\-&/%]*</param>
> + <param name="pattern">/[a-zA-Z0-9_\.\+\-\\&"'<>/%]*</param>
So far, so good...
> </data>
> </define>
> <define name="devicePath">
> <data type="string">
> - <param name="pattern">/[a-zA-Z0-9_\+\-/%]+</param>
> + <param name="pattern">/[a-zA-Z0-9_\+\-\\&"'<>/%]+</param>
but given that a devicePath can't have '.', should it really be allowed
to have other characters like &, ", ', <, or >?
> </data>
> </define>
> <define name="deviceName">
> <data type="string">
> - <param name="pattern">[a-zA-Z0-9_\.\-:/]+</param>
> + <param name="pattern">[a-zA-Z0-9_\.\-\\&"'<>:/]+</param>
Likewise for deviceName.
> +++ b/src/util/conf.c
> @@ -400,8 +400,9 @@ virConfParseString(virConfParserCtxtPtr ctxt)
> ctxt->cur += 3;
> base = ctxt->cur;
>
> + /* Find the ending triple quotes */
> while ((ctxt->cur + 2 < ctxt->end) &&
> - (STRPREFIX(ctxt->cur, "\"\"\""))) {
> + !(STRPREFIX(ctxt->cur, "\"\"\""))) {
Ah, the bug fix for patch 1. ACK to patch 1, then.
> +++ b/tests/xmconfigdata/test-escape-paths.cfg
> @@ -19,7 +19,7 @@ vnc = 1
> vncunused = 1
> vnclisten = "127.0.0.1"
> vncpasswd = "123poi"
> -disk = [ "phy:/dev/HostVG/XenGuest2,hda,w", "file:/root/boot.iso&test,hdc:cdrom,r" ]
> +disk = [ "phy:/dev/HostVG/XenGuest2,hda,w", "file:/root/boot.iso&test,hdc:cdrom,r", """phy:/dev/HostVG/XenGuest'",hdb,w""" ]
> vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge,model=e1000,type=ioemu" ]
> parallel = "none"
> serial = "none"
> diff --git a/tests/xmconfigdata/test-escape-paths.xml b/tests/xmconfigdata/test-escape-paths.xml
> index dabf492..13e6e29 100644
> --- a/tests/xmconfigdata/test-escape-paths.xml
> +++ b/tests/xmconfigdata/test-escape-paths.xml
> @@ -31,6 +31,11 @@
> <target dev='hdc' bus='ide'/>
> <readonly/>
> </disk>
> + <disk type='block' device='disk'>
> + <driver name='phy'/>
> + <source dev='/dev/HostVG/XenGuest'"'/>
Hmm; this really is a case of deviceName in the domain.rng schema. Are
there really devices named with ' or " in the name?
If so, then ACK to patch 2. If not, then it would be better to use
<disk type='file'><source file='/.../XenGuest'"'/>, since that
would pick up on absFilePath, which is more likely to match reality of
having ' or " in the name.
--
Eric Blake eblake at redhat.com +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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