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util: storage: Sanitize parsing of disk auth XMLs

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Pass in the XPath context as we do in all other places rather than
allocating a new one.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
This commit is contained in:
Peter Krempa 2018-03-06 14:17:59 +01:00
parent 74942ff0b6
commit 183f96314d
4 changed files with 23 additions and 35 deletions
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21
src/conf/domain_conf.c
View File

@ -7218,7 +7218,8 @@ virDomainHostdevSubsysSCSIHostDefParseXML(xmlNodePtr sourcenode,
static int static int
virDomainHostdevSubsysSCSIiSCSIDefParseXML(xmlNodePtr sourcenode, virDomainHostdevSubsysSCSIiSCSIDefParseXML(xmlNodePtr sourcenode,
virDomainHostdevSubsysSCSIPtr def) virDomainHostdevSubsysSCSIPtr def,
xmlXPathContextPtr ctxt)
{ {
int ret = -1; int ret = -1;
int auth_secret_usage = -1; int auth_secret_usage = -1;
@ -7259,7 +7260,7 @@ virDomainHostdevSubsysSCSIiSCSIDefParseXML(xmlNodePtr sourcenode,
while (cur != NULL) { while (cur != NULL) {
if (cur->type == XML_ELEMENT_NODE && if (cur->type == XML_ELEMENT_NODE &&
virXMLNodeNameEqual(cur, "auth")) { virXMLNodeNameEqual(cur, "auth")) {
if (!(authdef = virStorageAuthDefParse(sourcenode->doc, cur))) if (!(authdef = virStorageAuthDefParse(cur, ctxt)))
goto cleanup; goto cleanup;
if ((auth_secret_usage = if ((auth_secret_usage =
virSecretUsageTypeFromString(authdef->secrettype)) < 0) { virSecretUsageTypeFromString(authdef->secrettype)) < 0) {
@ -7288,7 +7289,8 @@ virDomainHostdevSubsysSCSIiSCSIDefParseXML(xmlNodePtr sourcenode,
static int static int
virDomainHostdevSubsysSCSIDefParseXML(xmlNodePtr sourcenode, virDomainHostdevSubsysSCSIDefParseXML(xmlNodePtr sourcenode,
virDomainHostdevSubsysSCSIPtr scsisrc) virDomainHostdevSubsysSCSIPtr scsisrc,
xmlXPathContextPtr ctxt)
{ {
char *protocol = NULL; char *protocol = NULL;
int ret = -1; int ret = -1;
@ -7305,7 +7307,7 @@ virDomainHostdevSubsysSCSIDefParseXML(xmlNodePtr sourcenode,
} }
if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI) if (scsisrc->protocol == VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI)
ret = virDomainHostdevSubsysSCSIiSCSIDefParseXML(sourcenode, scsisrc); ret = virDomainHostdevSubsysSCSIiSCSIDefParseXML(sourcenode, scsisrc, ctxt);
else else
ret = virDomainHostdevSubsysSCSIHostDefParseXML(sourcenode, scsisrc); ret = virDomainHostdevSubsysSCSIHostDefParseXML(sourcenode, scsisrc);
@ -7550,7 +7552,7 @@ virDomainHostdevDefParseXMLSubsys(xmlNodePtr node,
break; break;
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI: case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI:
if (virDomainHostdevSubsysSCSIDefParseXML(sourcenode, scsisrc) < 0) if (virDomainHostdevSubsysSCSIDefParseXML(sourcenode, scsisrc, ctxt) < 0)
goto error; goto error;
break; break;
@ -8540,7 +8542,8 @@ virDomainDiskSourceNetworkParse(xmlNodePtr node,
static int static int
virDomainDiskSourceAuthParse(xmlNodePtr node, virDomainDiskSourceAuthParse(xmlNodePtr node,
virStorageAuthDefPtr *authdefsrc) virStorageAuthDefPtr *authdefsrc,
xmlXPathContextPtr ctxt)
{ {
xmlNodePtr child; xmlNodePtr child;
virStorageAuthDefPtr authdef; virStorageAuthDefPtr authdef;
@ -8549,7 +8552,7 @@ virDomainDiskSourceAuthParse(xmlNodePtr node,
if (child->type == XML_ELEMENT_NODE && if (child->type == XML_ELEMENT_NODE &&
virXMLNodeNameEqual(child, "auth")) { virXMLNodeNameEqual(child, "auth")) {
if (!(authdef = virStorageAuthDefParse(node->doc, child))) if (!(authdef = virStorageAuthDefParse(child, ctxt)))
return -1; return -1;
*authdefsrc = authdef; *authdefsrc = authdef;
@ -8653,7 +8656,7 @@ virDomainDiskSourceParse(xmlNodePtr node,
goto cleanup; goto cleanup;
} }
if (virDomainDiskSourceAuthParse(node, &src->auth) < 0) if (virDomainDiskSourceAuthParse(node, &src->auth, ctxt) < 0)
goto cleanup; goto cleanup;
if (virDomainDiskSourceEncryptionParse(node, &src->encryption) < 0) if (virDomainDiskSourceEncryptionParse(node, &src->encryption) < 0)
@ -9401,7 +9404,7 @@ virDomainDiskDefParseXML(virDomainXMLOptionPtr xmlopt,
goto error; goto error;
} }
if (!(authdef = virStorageAuthDefParse(node->doc, cur))) if (!(authdef = virStorageAuthDefParse(cur, ctxt)))
goto error; goto error;
} else if (virXMLNodeNameEqual(cur, "iotune")) { } else if (virXMLNodeNameEqual(cur, "iotune")) {
if (virDomainDiskDefIotuneParse(def, ctxt) < 0) if (virDomainDiskDefIotuneParse(def, ctxt) < 0)

2
src/conf/storage_conf.c
View File

@ -527,7 +527,7 @@ virStoragePoolDefParseSource(xmlXPathContextPtr ctxt,
} }
if ((authnode = virXPathNode("./auth", ctxt))) { if ((authnode = virXPathNode("./auth", ctxt))) {
if (!(authdef = virStorageAuthDefParse(node->doc, authnode))) if (!(authdef = virStorageAuthDefParse(authnode, ctxt)))
goto cleanup; goto cleanup;
if (authdef->authType == VIR_STORAGE_AUTH_TYPE_NONE) { if (authdef->authType == VIR_STORAGE_AUTH_TYPE_NONE) {

32
src/util/virstoragefile.c
View File

@ -1809,16 +1809,20 @@ virStorageAuthDefCopy(const virStorageAuthDef *src)
} }
static virStorageAuthDefPtr virStorageAuthDefPtr
virStorageAuthDefParseXML(xmlXPathContextPtr ctxt) virStorageAuthDefParse(xmlNodePtr node,
xmlXPathContextPtr ctxt)
{ {
xmlNodePtr saveNode = ctxt->node;
virStorageAuthDefPtr authdef = NULL; virStorageAuthDefPtr authdef = NULL;
virStorageAuthDefPtr ret = NULL; virStorageAuthDefPtr ret = NULL;
xmlNodePtr secretnode = NULL; xmlNodePtr secretnode = NULL;
char *authtype = NULL; char *authtype = NULL;
ctxt->node = node;
if (VIR_ALLOC(authdef) < 0) if (VIR_ALLOC(authdef) < 0)
return NULL; goto cleanup;
if (!(authdef->username = virXPathString("string(./@username)", ctxt))) { if (!(authdef->username = virXPathString("string(./@username)", ctxt))) {
virReportError(VIR_ERR_XML_ERROR, "%s", virReportError(VIR_ERR_XML_ERROR, "%s",
@ -1862,32 +1866,12 @@ virStorageAuthDefParseXML(xmlXPathContextPtr ctxt)
cleanup: cleanup:
VIR_FREE(authtype); VIR_FREE(authtype);
virStorageAuthDefFree(authdef); virStorageAuthDefFree(authdef);
ctxt->node = saveNode;
return ret; return ret;
} }
virStorageAuthDefPtr
virStorageAuthDefParse(xmlDocPtr xml, xmlNodePtr root)
{
xmlXPathContextPtr ctxt = NULL;
virStorageAuthDefPtr authdef = NULL;
ctxt = xmlXPathNewContext(xml);
if (ctxt == NULL) {
virReportOOMError();
goto cleanup;
}
ctxt->node = root;
authdef = virStorageAuthDefParseXML(ctxt);
cleanup:
xmlXPathFreeContext(ctxt);
return authdef;
}
void void
virStorageAuthDefFormat(virBufferPtr buf, virStorageAuthDefFormat(virBufferPtr buf,
virStorageAuthDefPtr authdef) virStorageAuthDefPtr authdef)

3
src/util/virstoragefile.h
View File

@ -366,7 +366,8 @@ int virStorageFileGetSCSIKey(const char *path,
void virStorageAuthDefFree(virStorageAuthDefPtr def); void virStorageAuthDefFree(virStorageAuthDefPtr def);
virStorageAuthDefPtr virStorageAuthDefCopy(const virStorageAuthDef *src); virStorageAuthDefPtr virStorageAuthDefCopy(const virStorageAuthDef *src);
virStorageAuthDefPtr virStorageAuthDefParse(xmlDocPtr xml, xmlNodePtr root); virStorageAuthDefPtr virStorageAuthDefParse(xmlNodePtr node,
xmlXPathContextPtr ctxt);
void virStorageAuthDefFormat(virBufferPtr buf, virStorageAuthDefPtr authdef); void virStorageAuthDefFormat(virBufferPtr buf, virStorageAuthDefPtr authdef);
virSecurityDeviceLabelDefPtr virSecurityDeviceLabelDefPtr