[libvirt] [PATCH v8 1/5] domain: Add optional 'tls' attribute for TCP chardev
John Ferlan
jferlan at redhat.com
Fri Oct 7 11:00:26 UTC 2016
Add an optional "tls='yes'" option for a TCP chardev for the
express purpose to enable setting up TLS for the chardev. This
will assume that the qemu.conf settings have been adjusted as
well as the environment configured properly.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
docs/formatdomain.html.in | 21 +++++++++
docs/schemas/domaincommon.rng | 5 +++
src/conf/domain_conf.c | 22 +++++++++-
src/conf/domain_conf.h | 1 +
src/qemu/qemu_command.c | 3 +-
src/qemu/qemu_hotplug.c | 3 +-
...emuxml2argv-serial-tcp-tlsx509-chardev-tls.args | 30 +++++++++++++
...qemuxml2argv-serial-tcp-tlsx509-chardev-tls.xml | 50 ++++++++++++++++++++++
.../qemuxml2argv-serial-tcp-tlsx509-chardev.xml | 2 +-
tests/qemuxml2argvtest.c | 3 ++
...muxml2xmlout-serial-tcp-tlsx509-chardev-tls.xml | 1 +
.../qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml | 2 +-
tests/qemuxml2xmltest.c | 1 +
13 files changed, 139 insertions(+), 5 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.xml
create mode 120000 tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev-tls.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 1266e9d..010530e 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -6203,6 +6203,27 @@ qemu-kvm -net nic,model=? /dev/null
</devices>
...</pre>
+ <p>
+ <span class="since">Since 2.4.0,</span> some hypervisors support using
+ a TLS X.509 certificate environment in order to encrypt all serial TCP
+ connections via a hypervisor configuration option. In order to enable
+ TLS for the domain an optional attribute <code>tls</code> can be set to
+ "yes". Combined with the hypervisor's capability to utilize the TLS
+ environment allows for the character device to use the encrypted
+ communication. If the attribute is not present, then the default
+ setting is "no".
+ </p>
+<pre>
+ ...
+ <devices>
+ <serial type="tcp">
+ <source mode='connect' host="127.0.0.1" service="5555" tls="yes"/>
+ <protocol type="raw"/>
+ <target port="0"/>
+ </serial>
+ </devices>
+ ...</pre>
+
<h6><a name="elementsCharUDP">UDP network console</a></h6>
<p>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 6eeb4e9..362b90d 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -3453,6 +3453,11 @@
<ref name="virOnOff"/>
</attribute>
</optional>
+ <optional>
+ <attribute name="tls">
+ <ref name="virYesNo"/>
+ </attribute>
+ </optional>
<zeroOrMore>
<ref name='devSeclabel'/>
</zeroOrMore>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index f562323..1f7c43f 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1961,6 +1961,8 @@ virDomainChrSourceDefCopy(virDomainChrSourceDefPtr dest,
if (VIR_STRDUP(dest->data.tcp.service, src->data.tcp.service) < 0)
return -1;
+
+ dest->data.tcp.haveTLS = src->data.tcp.haveTLS;
break;
case VIR_DOMAIN_CHR_TYPE_UNIX:
@@ -9999,6 +10001,7 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
char *master = NULL;
char *slave = NULL;
char *append = NULL;
+ char *haveTLS = NULL;
int remaining = 0;
while (cur != NULL) {
@@ -10006,6 +10009,8 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
if (xmlStrEqual(cur->name, BAD_CAST "source")) {
if (!mode)
mode = virXMLPropString(cur, "mode");
+ if (!haveTLS)
+ haveTLS = virXMLPropString(cur, "tls");
switch ((virDomainChrType) def->type) {
case VIR_DOMAIN_CHR_TYPE_FILE:
@@ -10182,6 +10187,15 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
def->data.tcp.listen = true;
}
+ if (haveTLS &&
+ (def->data.tcp.haveTLS =
+ virTristateBoolTypeFromString(haveTLS)) <= 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("unknown chardev 'tls' setting '%s'"),
+ haveTLS);
+ goto error;
+ }
+
if (!protocol)
def->data.tcp.protocol = VIR_DOMAIN_CHR_TCP_PROTOCOL_RAW;
else if ((def->data.tcp.protocol =
@@ -10266,6 +10280,7 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
VIR_FREE(append);
VIR_FREE(logappend);
VIR_FREE(logfile);
+ VIR_FREE(haveTLS);
return remaining;
@@ -21417,7 +21432,12 @@ virDomainChrSourceDefFormat(virBufferPtr buf,
virBufferAsprintf(buf, "<source mode='%s' ",
def->data.tcp.listen ? "bind" : "connect");
virBufferEscapeString(buf, "host='%s' ", def->data.tcp.host);
- virBufferEscapeString(buf, "service='%s'/>\n", def->data.tcp.service);
+ virBufferEscapeString(buf, "service='%s'", def->data.tcp.service);
+ if (def->data.tcp.haveTLS != VIR_TRISTATE_BOOL_ABSENT)
+ virBufferAsprintf(buf, " tls='%s'",
+ virTristateBoolTypeToString(def->data.tcp.haveTLS));
+ virBufferAddLit(buf, "/>\n");
+
virBufferAsprintf(buf, "<protocol type='%s'/>\n",
virDomainChrTcpProtocolTypeToString(
def->data.tcp.protocol));
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index a70bc21..da203c3 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1094,6 +1094,7 @@ struct _virDomainChrSourceDef {
bool listen;
int protocol;
bool tlscreds;
+ int haveTLS; /* enum virTristateBool */
} tcp;
struct {
char *bindHost;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 578ff8b..b290ade 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -5002,7 +5002,8 @@ qemuBuildChrChardevStr(virLogManagerPtr logManager,
telnet ? ",telnet" : "",
dev->data.tcp.listen ? ",server,nowait" : "");
- if (cfg->chardevTLS) {
+ if (cfg->chardevTLS &&
+ dev->data.tcp.haveTLS == VIR_TRISTATE_BOOL_YES) {
char *objalias = NULL;
if (qemuBuildTLSx509CommandLine(cmd, cfg->chardevTLSx509certdir,
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 72dd93b..419296e 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1677,7 +1677,8 @@ int qemuDomainAttachChrDevice(virQEMUDriverPtr driver,
if (qemuDomainChrPreInsert(vmdef, chr) < 0)
goto cleanup;
- if (cfg->chardevTLS) {
+ if (cfg->chardevTLS &&
+ dev->data.tcp.haveTLS == VIR_TRISTATE_BOOL_YES) {
if (qemuBuildTLSx509BackendProps(cfg->chardevTLSx509certdir,
dev->data.tcp.listen,
cfg->chardevTLSx509verify,
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.args b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.args
new file mode 100644
index 0000000..cac0d85
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.args
@@ -0,0 +1,30 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name QEMUGuest1 \
+-S \
+-M pc \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefconfig \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-chardev udp,id=charserial0,host=127.0.0.1,port=2222,localaddr=127.0.0.1,\
+localport=1111 \
+-device isa-serial,chardev=charserial0,id=serial0 \
+-chardev socket,id=charserial1,host=127.0.0.1,port=5555 \
+-device isa-serial,chardev=charserial1,id=serial1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.xml b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.xml
new file mode 100644
index 0000000..debc69b
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.xml
@@ -0,0 +1,50 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219136</memory>
+ <currentMemory unit='KiB'>219136</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='ide' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <serial type='udp'>
+ <source mode='bind' host='127.0.0.1' service='1111'/>
+ <source mode='connect' host='127.0.0.1' service='2222'/>
+ <target port='0'/>
+ </serial>
+ <serial type='tcp'>
+ <source mode='connect' host='127.0.0.1' service='5555' tls='no'/>
+ <protocol type='raw'/>
+ <target port='0'/>
+ </serial>
+ <console type='udp'>
+ <source mode='bind' host='127.0.0.1' service='1111'/>
+ <source mode='connect' host='127.0.0.1' service='2222'/>
+ <target type='serial' port='0'/>
+ </console>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.xml b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.xml
index 1618b02..1d7896d 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.xml
+++ b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.xml
@@ -27,7 +27,7 @@
<target port='0'/>
</serial>
<serial type='tcp'>
- <source mode='connect' host='127.0.0.1' service='5555'/>
+ <source mode='connect' host='127.0.0.1' service='5555' tls='yes'/>
<protocol type='raw'/>
<target port='0'/>
</serial>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 4b9ecb8..41adff4 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1150,6 +1150,9 @@ mymain(void)
DO_TEST("serial-tcp-tlsx509-chardev",
QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG,
QEMU_CAPS_OBJECT_TLS_CREDS_X509);
+ DO_TEST("serial-tcp-tlsx509-chardev-tls",
+ QEMU_CAPS_CHARDEV, QEMU_CAPS_NODEFCONFIG,
+ QEMU_CAPS_OBJECT_TLS_CREDS_X509);
driver.config->chardevTLS = 0;
VIR_FREE(driver.config->chardevTLSx509certdir);
DO_TEST("serial-many-chardev",
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev-tls.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev-tls.xml
new file mode 120000
index 0000000..3453497
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev-tls.xml
@@ -0,0 +1 @@
+../qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev-tls.xml
\ No newline at end of file
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml
index 832e2a2..23c244b 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml
@@ -32,7 +32,7 @@
<target port='0'/>
</serial>
<serial type='tcp'>
- <source mode='connect' host='127.0.0.1' service='5555'/>
+ <source mode='connect' host='127.0.0.1' service='5555' tls='yes'/>
<protocol type='raw'/>
<target port='0'/>
</serial>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 4b58986..02fe32e 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -534,6 +534,7 @@ mymain(void)
DO_TEST("serial-udp", NONE);
DO_TEST("serial-tcp-telnet", NONE);
DO_TEST("serial-tcp-tlsx509-chardev", NONE);
+ DO_TEST("serial-tcp-tlsx509-chardev-tls", NONE);
DO_TEST("serial-many", NONE);
DO_TEST("serial-spiceport", NONE);
DO_TEST("serial-spiceport-nospice", NONE);
--
2.7.4
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