[libvirt] [PATCH v3 2/4] conf: Introduce chartcp_tls_x509_cert_dir
John Ferlan
jferlan at redhat.com
Thu Jun 16 16:26:43 UTC 2016
Add a new TLS X.509 certificate type - "chardev". This will handle the
creation of a TLS certificate capability (and possibly repository) for
properly configured character device TCP backends.
Unlike the vnc and spice there is no "listen" or "passwd" associated. The
credentials will be handled via a libvirt secret provided to a specific
backend.
Make use of the default verify option as well.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/qemu/libvirtd_qemu.aug | 5 +++
src/qemu/qemu.conf | 28 ++++++++++++
src/qemu/qemu_conf.c | 6 +++
src/qemu/qemu_conf.h | 4 ++
src/qemu/test_libvirtd_qemu.aug.in | 3 ++
.../qemuxml2argv-serial-tcp-tlsx509-chardev.xml | 41 ++++++++++++++++++
.../qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml | 50 ++++++++++++++++++++++
tests/qemuxml2xmltest.c | 1 +
8 files changed, 138 insertions(+)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.xml
create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml
diff --git a/src/qemu/libvirtd_qemu.aug b/src/qemu/libvirtd_qemu.aug
index 06d9b98..25b4645 100644
--- a/src/qemu/libvirtd_qemu.aug
+++ b/src/qemu/libvirtd_qemu.aug
@@ -45,6 +45,10 @@ module Libvirtd_qemu =
| bool_entry "spice_sasl"
| str_entry "spice_sasl_dir"
+ let chardev_entry = bool_entry "chardev_tls"
+ | str_entry "chardev_tls_x509_cert_dir"
+ | bool_entry "chardev_tls_x509_verify"
+
let nogfx_entry = bool_entry "nographics_allow_host_audio"
let remote_display_entry = int_entry "remote_display_port_min"
@@ -99,6 +103,7 @@ module Libvirtd_qemu =
let entry = default_tls_entry
| vnc_entry
| spice_entry
+ | chardev_entry
| nogfx_entry
| remote_display_entry
| security_entry
diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf
index fb6b843..8634e9f 100644
--- a/src/qemu/qemu.conf
+++ b/src/qemu/qemu.conf
@@ -185,6 +185,34 @@
#
#spice_sasl_dir = "/some/directory/sasl2"
+# Enable use of TLS encryption on the chardev TCP transports.
+#
+# It is necessary to setup CA and issue a server certificate
+# before enabling this.
+#
+#chardev_tls = 1
+
+
+# In order to override the default TLS certificate location for character
+# device TCP certificates, supply a valid path to the certificate directory.
+# If the provided path does not exist then the default_tls_x509_cert_dir
+# path will be used.
+#
+#chardev_tls_x509_cert_dir = "/etc/pki/qemu-chardev"
+
+
+# The default TLS configuration only uses certificates for the server
+# allowing the client to verify the server's identity and establish
+# an encrypted channel.
+#
+# It is possible to use x509 certificates for authentication too, by
+# issuing a x509 certificate to every client who needs to connect.
+#
+# Enabling this option will reject any client who does not have a
+# certificate signed by the CA in /etc/pki/libvirt-chardev/ca-cert.pem
+#
+#chardev_tls_x509_verify = 1
+
# By default, if no graphical front end is configured, libvirt will disable
# QEMU audio output since directly talking to alsa/pulseaudio may not work
diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
index 3091843..b1c6215 100644
--- a/src/qemu/qemu_conf.c
+++ b/src/qemu/qemu_conf.c
@@ -272,6 +272,7 @@ virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged)
SET_TLS_X509_CERT_DEFAULT(vnc);
SET_TLS_X509_CERT_DEFAULT(spice);
+ SET_TLS_X509_CERT_DEFAULT(chardev);
#undef SET_TLS_X509_CERT_DEFAULT
@@ -370,6 +371,8 @@ static void virQEMUDriverConfigDispose(void *obj)
VIR_FREE(cfg->spicePassword);
VIR_FREE(cfg->spiceSASLdir);
+ VIR_FREE(cfg->chardevTLSx509certdir);
+
while (cfg->nhugetlbfs) {
cfg->nhugetlbfs--;
VIR_FREE(cfg->hugetlbfs[cfg->nhugetlbfs].mnt_dir);
@@ -547,6 +550,9 @@ int virQEMUDriverConfigLoadFile(virQEMUDriverConfigPtr cfg,
GET_VALUE_STR("spice_password", cfg->spicePassword);
GET_VALUE_BOOL("spice_auto_unix_socket", cfg->spiceAutoUnixSocket);
+ GET_VALUE_STR("chardev_tls_x509_cert_dir", cfg->chardevTLSx509certdir);
+ GET_VALUE_BOOL_DFLT("chardev_tls_x509_verify", cfg->chardevTLSx509verify,
+ cfg->defaultTLSx509verify);
GET_VALUE_ULONG("remote_websocket_port_min", cfg->webSocketPortMin);
if (cfg->webSocketPortMin < QEMU_WEBSOCKET_PORT_MIN) {
diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h
index 1843693..7138a7b 100644
--- a/src/qemu/qemu_conf.h
+++ b/src/qemu/qemu_conf.h
@@ -129,6 +129,10 @@ struct _virQEMUDriverConfig {
char *spicePassword;
bool spiceAutoUnixSocket;
+ bool chardevTLS;
+ char *chardevTLSx509certdir;
+ bool chardevTLSx509verify;
+
int remotePortMin;
int remotePortMax;
diff --git a/src/qemu/test_libvirtd_qemu.aug.in b/src/qemu/test_libvirtd_qemu.aug.in
index 01351b4..44ee451 100644
--- a/src/qemu/test_libvirtd_qemu.aug.in
+++ b/src/qemu/test_libvirtd_qemu.aug.in
@@ -20,6 +20,9 @@ module Test_libvirtd_qemu =
{ "spice_password" = "XYZ12345" }
{ "spice_sasl" = "1" }
{ "spice_sasl_dir" = "/some/directory/sasl2" }
+{ "chardev_tls" = "1" }
+{ "chardev_tls_x509_cert_dir" = "/etc/pki/qemu-chardev" }
+{ "chardev_tls_x509_verify" = "1" }
{ "nographics_allow_host_audio" = "1" }
{ "remote_display_port_min" = "5900" }
{ "remote_display_port_max" = "65535" }
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.xml b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.xml
new file mode 100644
index 0000000..1618b02
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-tlsx509-chardev.xml
@@ -0,0 +1,41 @@
+<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'/>
+ <controller type='ide' index='0'/>
+ <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'/>
+ <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>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev.xml
new file mode 100644
index 0000000..832e2a2
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-serial-tcp-tlsx509-chardev.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'/>
+ <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/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 7db9cb7..3064458 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -483,6 +483,7 @@ mymain(void)
DO_TEST("serial-tcp");
DO_TEST("serial-udp");
DO_TEST("serial-tcp-telnet");
+ DO_TEST("serial-tcp-tlsx509-chardev");
DO_TEST("serial-many");
DO_TEST("serial-spiceport");
DO_TEST("serial-spiceport-nospice");
--
2.5.5
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