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conf: Add new secret type "tls"

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Add a new secret usage type known as "tls" - it will handle adding the
secret objects for various TLS objects that need to provide some sort
of passphrase in order to access the credentials.

The format is:

   <secret ephemeral='no' private='no'>
     <description>Sample TLS secret</description>
     <usage type='tls'>
       <name>mumblyfratz</name>
     </usage>
</secret>

Once defined and a passphrase set, future patches will allow the UUID
to be set in the qemu.conf file and thus used as a secret for various
TLS options such as a chardev serial TCP connection, a NBD client/server
connection, and migration.

Signed-off-by: John Ferlan <jferlan@redhat.com>
This commit is contained in:
John Ferlan 2016-07-14 15:09:08 -04:00
parent 2c3223785c
commit 13350a17e4
10 changed files with 121 additions and 3 deletions
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4
docs/aclpolkit.html.in
View File

@ -224,6 +224,10 @@
<td>secret_usage_target</td>
<td>Name of the associated iSCSI target, if any</td>
</tr>
<tr>
<td>secret_usage_name</td>
<td>Name of the associated TLS secret, if any</td>
</tr>
</tbody>
</table>

59
docs/formatsecret.html.in
View File

@ -41,8 +41,9 @@
<dd>
Specifies what this secret is used for. A mandatory
<code>type</code> attribute specifies the usage category, currently
only <code>volume</code>, <code>ceph</code>, and <code>iscsi</code>
are defined. Specific usage categories are described below.
only <code>volume</code>, <code>ceph</code>, <code>iscsi</code>,
and <code>tls</code> are defined. Specific usage categories
are described below.
</dd>
</dl>
@ -271,5 +272,59 @@
&lt;/auth&gt;
</pre>
<h3><a name="tlsUsageType">Usage type "tls"</a></h3>
<p>
This secret may be used in order to provide the passphrase for the
private key used to provide TLS credentials.
The <code>&lt;usage type='tls'&gt;</code> element must contain a
single <code>name</code> element that specifies a usage name
for the secret.
<span class="since">Since 2.3.0</span>.
The following is an example of the expected XML and processing to
define the secret:
</p>
<pre>
# cat tls-secret.xml
&lt;secret ephemeral='no' private='yes'&gt;
&lt;description&gt;sample tls secret&lt;/description&gt;
&lt;usage type='tls'&gt;
&lt;name&gt;TLS_example&lt;/name&gt;
&lt;/usage&gt;
&lt;/secret&gt;
# virsh secret-define tls-secret.xml
Secret 718c71bd-67b5-4a2b-87ec-a24e8ca200dc created
# virsh secret-list
UUID Usage
-----------------------------------------------------------
718c71bd-67b5-4a2b-87ec-a24e8ca200dc tls TLS_example
#
</pre>
<p>
A secret may also be defined via the
<a href="html/libvirt-libvirt-secret.html#virSecretDefineXML">
<code>virSecretDefineXML</code></a> API.
Once the secret is defined, a secret value will need to be set. The
secret would be the passphrase used to access the TLS credentials.
The following is a simple example of using
<code>virsh secret-set-value</code> to set the secret value. The
<a href="html/libvirt-libvirt-secret.html#virSecretSetValue">
<code>virSecretSetValue</code></a> API may also be used to set
a more secure secret without using printable/readable characters.
</p>
<pre>
# MYSECRET=`printf %s "letmein" | base64`
# virsh secret-set-value 718c71bd-67b5-4a2b-87ec-a24e8ca200dc $MYSECRET
Secret value set
</pre>
</body>
</html>

10
docs/schemas/secret.rng
View File

@ -36,6 +36,7 @@
<ref name='usagevolume'/>
<ref name='usageceph'/>
<ref name='usageiscsi'/>
<ref name='usagetls'/>
<!-- More choices later -->
</choice>
</element>
@ -71,4 +72,13 @@
</element>
</define>
<define name='usagetls'>
<attribute name='type'>
<value>tls</value>
</attribute>
<element name='name'>
<ref name='genericName'/>
</element>
</define>
</grammar>

1
include/libvirt/libvirt-secret.h
View File

@ -43,6 +43,7 @@ typedef enum {
VIR_SECRET_USAGE_TYPE_VOLUME = 1,
VIR_SECRET_USAGE_TYPE_CEPH = 2,
VIR_SECRET_USAGE_TYPE_ISCSI = 3,
VIR_SECRET_USAGE_TYPE_TLS = 4,
# ifdef VIR_ENUM_SENTINELS
VIR_SECRET_USAGE_TYPE_LAST

13
src/access/viraccessdriverpolkit.c
View File

@ -338,6 +338,19 @@ virAccessDriverPolkitCheckSecret(virAccessManagerPtr manager,
virAccessPermSecretTypeToString(perm),
attrs);
} break;
case VIR_SECRET_USAGE_TYPE_TLS: {
const char *attrs[] = {
"connect_driver", driverName,
"secret_uuid", uuidstr,
"secret_usage_name", secret->usage.name,
NULL,
};
return virAccessDriverPolkitCheck(manager,
"secret",
virAccessPermSecretTypeToString(perm),
attrs);
} break;
}
}

23
src/conf/secret_conf.c
View File

@ -30,6 +30,7 @@
#include "secret_conf.h"
#include "virsecretobj.h"
#include "virerror.h"
#include "virstring.h"
#include "virxml.h"
#include "viruuid.h"
@ -38,7 +39,7 @@
VIR_LOG_INIT("conf.secret_conf");
VIR_ENUM_IMPL(virSecretUsage, VIR_SECRET_USAGE_TYPE_LAST,
"none", "volume", "ceph", "iscsi")
"none", "volume", "ceph", "iscsi", "tls")
const char *
virSecretUsageIDForDef(virSecretDefPtr def)
@ -56,6 +57,9 @@ virSecretUsageIDForDef(virSecretDefPtr def)
case VIR_SECRET_USAGE_TYPE_ISCSI:
return def->usage.target;
case VIR_SECRET_USAGE_TYPE_TLS:
return def->usage.name;
default:
return NULL;
}
@ -85,6 +89,10 @@ virSecretDefFree(virSecretDefPtr def)
VIR_FREE(def->usage.target);
break;
case VIR_SECRET_USAGE_TYPE_TLS:
VIR_FREE(def->usage.name);
break;
default:
VIR_ERROR(_("unexpected secret usage type %d"), def->usage_type);
break;
@ -145,6 +153,15 @@ virSecretDefParseUsage(xmlXPathContextPtr ctxt,
}
break;
case VIR_SECRET_USAGE_TYPE_TLS:
def->usage.name = virXPathString("string(./usage/name)", ctxt);
if (!def->usage.name) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("TLS usage specified, but name is missing"));
return -1;
}
break;
default:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected secret usage type %d"),
@ -297,6 +314,10 @@ virSecretDefFormatUsage(virBufferPtr buf,
virBufferEscapeString(buf, "<target>%s</target>\n", def->usage.target);
break;
case VIR_SECRET_USAGE_TYPE_TLS:
virBufferEscapeString(buf, "<name>%s</name>\n", def->usage.name);
break;
default:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected secret usage type %d"),

1
src/conf/secret_conf.h
View File

@ -40,6 +40,7 @@ struct _virSecretDef {
char *volume; /* May be NULL */
char *ceph;
char *target;
char *name;
} usage;
};

5
src/conf/virsecretobj.c
View File

@ -237,6 +237,11 @@ virSecretObjSearchName(const void *payload,
if (STREQ(secret->def->usage.target, data->usageID))
found = 1;
break;
case VIR_SECRET_USAGE_TYPE_TLS:
if (STREQ(secret->def->usage.name, data->usageID))
found = 1;
break;
}
cleanup:

7
tests/secretxml2xmlin/usage-tls.xml Normal file
View File

@ -0,0 +1,7 @@
<secret ephemeral='no' private='no'>
<uuid>f52a81b2-424e-490c-823d-6bd4235bc572</uuid>
<description>Sample TLS Secret</description>
<usage type='tls'>
<name>mumblyfratz</name>
</usage>
</secret>

1
tests/secretxml2xmltest.c
View File

@ -80,6 +80,7 @@ mymain(void)
DO_TEST("usage-volume");
DO_TEST("usage-ceph");
DO_TEST("usage-iscsi");
DO_TEST("usage-tls");
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}