[libvirt] [PATCH 2/3] conf: Add support for modifying ssl validation for https/ftps disks
Peter Krempa
pkrempa at redhat.com
Thu Apr 27 17:04:24 UTC 2017
To allow turning of verification of SSL cerificates add a new element
<ssl> to the disk source XML which will allow configuring the validation
process using the 'verify' attribute.
---
docs/formatdomain.html.in | 9 ++++
docs/schemas/domaincommon.rng | 50 +++++++++++++++++++++-
src/conf/domain_conf.c | 21 ++++++++-
src/util/virstoragefile.h | 1 +
.../generic-disk-network-http.xml | 2 +
5 files changed, 80 insertions(+), 3 deletions(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index ab70edff3..351122fe1 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2256,6 +2256,7 @@
<driver name='qemu' type='raw'/>
<source protocol="https" name="url_path">
<host name="hostname" port="443"/>
+ <ssl verify="no"/>
</source>
<target dev='hdf' bus='ide' tray='open'/>
<readonly/>
@@ -2602,6 +2603,14 @@
possible to pass one or more cookies. The cookie name and value
must conform to the HTTP specification.
</dd>
+ <dt><code>ssl</code></dt>
+ <dd>
+ For <code>https</code> and <code>ftps</code> accessed storage it's
+ possible to tweak the SSL transport parameters with this element.
+ The <code>verify</code> attribute allows to turn on or of SSL
+ certificate validation. Supported values are <code>yes</code> and
+ <code>no</code>. <span class="since">Since 3.3.0</span>
+ </dd>
</dl>
<p>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index b2fa72381..e6bcd6835 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -1574,13 +1574,41 @@
</element>
</define>
+ <define name="diskSourceNetworkProtocolSSLVerify">
+ <element name="ssl">
+ <attribute name="verify">
+ <ref name="virYesNo"/>
+ </attribute>
+ <empty/>
+ </element>
+ </define>
+
+ <define name="diskSourceNetworkProtocolHTTPS">
+ <element name="source">
+ <interleave>
+ <attribute name="protocol">
+ <choice>
+ <value>https</value>
+ </choice>
+ </attribute>
+ <attribute name="name"/>
+ <ref name="diskSourceNetworkHost"/>
+ <optional>
+ <ref name="diskSourceNetworkProtocolHTTPCookies"/>
+ </optional>
+ <optional>
+ <ref name="diskSourceNetworkProtocolSSLVerify"/>
+ </optional>
+ </interleave>
+ </element>
+ </define>
+
<define name="diskSourceNetworkProtocolHTTP">
<element name="source">
<interleave>
<attribute name="protocol">
<choice>
<value>http</value>
- <value>https</value>
</choice>
</attribute>
<attribute name="name"/>
@@ -1592,6 +1620,23 @@
</element>
</define>
+ <define name="diskSourceNetworkProtocolFTPS">
+ <element name="source">
+ <interleave>
+ <attribute name="protocol">
+ <choice>
+ <value>ftps</value>
+ </choice>
+ </attribute>
+ <attribute name="name"/>
+ <ref name="diskSourceNetworkHost"/>
+ <optional>
+ <ref name="diskSourceNetworkProtocolSSLVerify"/>
+ </optional>
+ </interleave>
+ </element>
+ </define>
+
<define name="diskSourceNetworkProtocolSimple">
<element name="source">
<attribute name="protocol">
@@ -1599,7 +1644,6 @@
<value>sheepdog</value>
<value>iscsi</value>
<value>ftp</value>
- <value>ftps</value>
<value>tftp</value>
</choice>
</attribute>
@@ -1646,6 +1690,8 @@
<ref name="diskSourceNetworkProtocolGluster"/>
<ref name="diskSourceNetworkProtocolRBD"/>
<ref name="diskSourceNetworkProtocolHTTP"/>
+ <ref name="diskSourceNetworkProtocolHTTPS"/>
+ <ref name="diskSourceNetworkProtocolFTPS"/>
<ref name="diskSourceNetworkProtocolSimple"/>
</choice>
</define>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index a951282db..e750c0f07 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -7671,6 +7671,20 @@ virDomainDiskSourceParse(xmlNodePtr node,
if (virDomainStorageCookiesParse(tmpnode, ctxt, src) < 0)
goto cleanup;
}
+
+ if ((src->protocol == VIR_STORAGE_NET_PROTOCOL_HTTPS ||
+ src->protocol == VIR_STORAGE_NET_PROTOCOL_FTPS) &&
+ (tmp = virXPathString("string(./ssl/@verify)", ctxt))) {
+ int verify;
+ if ((verify = virTristateBoolTypeFromString(tmp)) < 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("invalid ssl verify mode '%s'"), tmp);
+ goto cleanup;
+ }
+ VIR_FREE(tmp);
+
+ src->sslverify = verify;
+ }
break;
case VIR_STORAGE_TYPE_VOLUME:
if (virDomainDiskSourcePoolDefParse(node, &src->srcpool) < 0)
@@ -20892,7 +20906,8 @@ virDomainDiskSourceFormatNetwork(virBufferPtr buf,
VIR_FREE(path);
- if (src->nhosts == 0 && !src->snapshot && !src->configFile && src->ncookies == 0) {
+ if (src->nhosts == 0 && !src->snapshot && !src->configFile &&
+ src->ncookies == 0 && src->sslverify == VIR_TRISTATE_BOOL_ABSENT) {
virBufferAddLit(buf, "/>\n");
} else {
virBufferAddLit(buf, ">\n");
@@ -20917,6 +20932,10 @@ virDomainDiskSourceFormatNetwork(virBufferPtr buf,
if (virDomainDiskSourceFormatNetworkCookies(buf, src) < 0)
return -1;
+ if (src->sslverify != VIR_TRISTATE_BOOL_ABSENT)
+ virBufferAsprintf(buf, "<ssl verify='%s'/>\n",
+ virTristateBoolTypeToString(src->sslverify));
+
virBufferAdjustIndent(buf, -2);
virBufferAddLit(buf, "</source>\n");
}
diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
index 42d9eac61..4f7509cff 100644
--- a/src/util/virstoragefile.h
+++ b/src/util/virstoragefile.h
@@ -250,6 +250,7 @@ struct _virStorageSource {
virStorageSourcePoolDefPtr srcpool;
virStorageAuthDefPtr auth;
virStorageEncryptionPtr encryption;
+ virTristateBool sslverify;
char *driverName;
int format; /* virStorageFileFormat in domain backing chains, but
diff --git a/tests/genericxml2xmlindata/generic-disk-network-http.xml b/tests/genericxml2xmlindata/generic-disk-network-http.xml
index c5da23604..0821b63df 100644
--- a/tests/genericxml2xmlindata/generic-disk-network-http.xml
+++ b/tests/genericxml2xmlindata/generic-disk-network-http.xml
@@ -25,6 +25,7 @@
<driver name='qemu' type='raw'/>
<source protocol='https' name='test2.img'>
<host name='example.org'/>
+ <ssl verify='no'/>
</source>
<target dev='vdb' bus='virtio'/>
</disk>
@@ -47,6 +48,7 @@
<cookie name='test'>testcookievalue</cookie>
<cookie name='test2'>blurb</cookie>
</cookies>
+ <ssl verify='yes'/>
</source>
<target dev='vdd' bus='virtio'/>
</disk>
--
2.12.2
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