[libvirt] [PATCH 05/11] conf: Disallow new qemu, lxc domains to use all white space as name
John Ferlan
jferlan at redhat.com
Mon Jul 30 18:46:42 UTC 2018
https://bugzilla.redhat.com/show_bug.cgi?id=1107420
Add a new define/create flag VIR_DOMAIN_DEF_PARSE_VALIDATE_NAME
to disallow new domains to be defined/created using a name
comprised entirely of spaces.
Alter the qemuxml2argvtest to add a test in order to prove the
failure occurs.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/conf/domain_conf.c | 7 ++++++
src/conf/domain_conf.h | 4 +++
src/lxc/lxc_driver.c | 6 +++--
src/qemu/qemu_driver.c | 6 +++--
tests/qemuxml2argvdata/name-whitespace.xml | 29 ++++++++++++++++++++++
tests/qemuxml2argvtest.c | 5 +++-
6 files changed, 52 insertions(+), 5 deletions(-)
create mode 100644 tests/qemuxml2argvdata/name-whitespace.xml
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 705575fe92..6620ff89af 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -19278,6 +19278,13 @@ virDomainDefParseXML(xmlDocPtr xml,
goto error;
}
+ if ((flags & VIR_DOMAIN_DEF_PARSE_VALIDATE_NAME) &&
+ virStringIsEmpty(def->name)) {
+ virReportError(VIR_ERR_XML_ERROR, "%s",
+ _("name must contain at least one non blank character"));
+ goto error;
+ }
+
/* Extract domain uuid. If both uuid and sysinfo/system/entry/uuid
* exist, they must match; and if only the latter exists, it can
* also serve as the uuid. */
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index c1dfa37fdf..7eb020d6d7 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2996,6 +2996,10 @@ typedef enum {
* post parse callbacks before starting. Failure of the post parse callback
* is recorded as def->postParseFail */
VIR_DOMAIN_DEF_PARSE_ALLOW_POST_PARSE_FAIL = 1 << 12,
+ /* Perform extra name validation on new domain names which
+ * will cause failure to parse the XML. Initially just that a
+ * name cannot be all white space. */
+ VIR_DOMAIN_DEF_PARSE_VALIDATE_NAME = 1 << 13,
} virDomainDefParseFlags;
typedef enum {
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 8867645cdc..5d1082292d 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -418,7 +418,8 @@ lxcDomainDefineXMLFlags(virConnectPtr conn, const char *xml, unsigned int flags)
virDomainDefPtr oldDef = NULL;
virLXCDriverConfigPtr cfg = virLXCDriverGetConfig(driver);
virCapsPtr caps = NULL;
- unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE;
+ unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE |
+ VIR_DOMAIN_DEF_PARSE_VALIDATE_NAME;
virCheckFlags(VIR_DOMAIN_DEFINE_VALIDATE, NULL);
@@ -1163,7 +1164,8 @@ lxcDomainCreateXMLWithFiles(virConnectPtr conn,
virObjectEventPtr event = NULL;
virLXCDriverConfigPtr cfg = virLXCDriverGetConfig(driver);
virCapsPtr caps = NULL;
- unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE;
+ unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE |
+ VIR_DOMAIN_DEF_PARSE_VALIDATE_NAME;
virCheckFlags(VIR_DOMAIN_START_AUTODESTROY |
VIR_DOMAIN_START_VALIDATE, NULL);
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index fb0d4a8c7a..37f10d286e 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -1710,7 +1710,8 @@ static virDomainPtr qemuDomainCreateXML(virConnectPtr conn,
unsigned int start_flags = VIR_QEMU_PROCESS_START_COLD;
virCapsPtr caps = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE |
- VIR_DOMAIN_DEF_PARSE_ABI_UPDATE;
+ VIR_DOMAIN_DEF_PARSE_ABI_UPDATE |
+ VIR_DOMAIN_DEF_PARSE_VALIDATE_NAME;
virCheckFlags(VIR_DOMAIN_START_PAUSED |
VIR_DOMAIN_START_AUTODESTROY |
@@ -7381,7 +7382,8 @@ qemuDomainDefineXMLFlags(virConnectPtr conn,
virQEMUDriverConfigPtr cfg;
virCapsPtr caps = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE |
- VIR_DOMAIN_DEF_PARSE_ABI_UPDATE;
+ VIR_DOMAIN_DEF_PARSE_ABI_UPDATE |
+ VIR_DOMAIN_DEF_PARSE_VALIDATE_NAME;
virCheckFlags(VIR_DOMAIN_DEFINE_VALIDATE, NULL);
diff --git a/tests/qemuxml2argvdata/name-whitespace.xml b/tests/qemuxml2argvdata/name-whitespace.xml
new file mode 100644
index 0000000000..e143c7c770
--- /dev/null
+++ b/tests/qemuxml2argvdata/name-whitespace.xml
@@ -0,0 +1,29 @@
+<domain type='qemu'>
+ <name> </name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static' cpuset='1-4,8-20,525'>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-system-i686</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'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 84117a3e63..e92bcd0df6 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -494,7 +494,8 @@ testCompareXMLToArgv(const void *data)
if (!(vm = virDomainObjNew(driver.xmlopt)))
goto cleanup;
- parseFlags |= VIR_DOMAIN_DEF_PARSE_INACTIVE;
+ parseFlags |= VIR_DOMAIN_DEF_PARSE_INACTIVE |
+ VIR_DOMAIN_DEF_PARSE_VALIDATE_NAME;
if (!(vm->def = virDomainDefParseFile(xml, driver.caps, driver.xmlopt,
NULL, parseFlags))) {
if (flags & FLAG_EXPECT_PARSE_ERROR)
@@ -822,6 +823,8 @@ mymain(void)
DO_TEST_PARSE_ERROR("minimal-no-memory", NONE);
DO_TEST("minimal-msg-timestamp", QEMU_CAPS_MSG_TIMESTAMP);
+ DO_TEST_PARSE_ERROR("name-whitespace", NONE);
+
DO_TEST_CAPS_LATEST("genid");
DO_TEST_CAPS_LATEST("genid-auto");
--
2.17.1
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