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Wed, 19 Apr 2017 18:21:46 +0000 (UTC) X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Type: text/plain; charset="utf-8" This commit adds support for invoking methods on remote objects via hypervInvokeMethod. --- src/hyperv/hyperv_wmi.c | 566 ++++++++++++++++++++++++++++++++++++++++++++= ++++ src/hyperv/hyperv_wmi.h | 3 + src/hyperv/openwsman.h | 4 + 3 files changed, 573 insertions(+) diff --git a/src/hyperv/hyperv_wmi.c b/src/hyperv/hyperv_wmi.c index c9a7666..cbbe028 100644 --- a/src/hyperv/hyperv_wmi.c +++ b/src/hyperv/hyperv_wmi.c @@ -24,6 +24,7 @@ */ =20 #include +#include =20 #include "internal.h" #include "virerror.h" @@ -34,11 +35,14 @@ #include "hyperv_private.h" #include "hyperv_wmi.h" #include "virstring.h" +#include "openwsman.h" +#include "virlog.h" =20 #define WS_SERIALIZER_FREE_MEM_WORKS 0 =20 #define VIR_FROM_THIS VIR_FROM_HYPERV =20 +VIR_LOG_INIT("hyperv.hyperv_wmi"); =20 static int hypervGetWmiClassInfo(hypervPrivate *priv, hypervWmiClassInfoListPtr list, @@ -388,6 +392,568 @@ hypervAddEmbeddedParam(hypervInvokeParamsListPtr para= ms, hypervPrivate *priv, } =20 =20 +/* + * Serializing parameters to XML and invoking methods + */ + +static int +hypervGetCimTypeInfo(hypervCimTypePtr typemap, const char *name, + hypervCimTypePtr *property) +{ + size_t i =3D 0; + while (typemap[i].name[0] !=3D '\0') { + if (STREQ(typemap[i].name, name)) { + *property =3D &typemap[i]; + return 0; + } + i++; + } + + return -1; +} + + +static int +hypervCreateInvokeXmlDoc(hypervInvokeParamsListPtr params, WsXmlDocH *docR= oot) +{ + int result =3D -1; + char *method =3D NULL; + WsXmlNodeH xmlNodeMethod =3D NULL; + + if (virAsprintf(&method, "%s_INPUT", params->method) < 0) + goto err; + + *docRoot =3D ws_xml_create_doc(NULL, method); + if (*docRoot =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not instantiate XML document")); + goto err; + } + + xmlNodeMethod =3D xml_parser_get_root(*docRoot); + if (xmlNodeMethod =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not get root node of XML document")); + goto err; + } + + /* add resource URI as namespace */ + ws_xml_set_ns(xmlNodeMethod, params->resourceUri, "p"); + + result =3D 0; + goto cleanup; + + err: + if (*docRoot !=3D NULL) { + ws_xml_destroy_doc(*docRoot); + *docRoot =3D NULL; + } + cleanup: + VIR_FREE(method); + return result; +} + +static int +hypervSerializeSimpleParam(hypervParamPtr p, const char *resourceUri, + WsXmlNodeH *methodNode) +{ + int result =3D -1; + WsXmlNodeH xmlNodeParam =3D NULL; + + xmlNodeParam =3D ws_xml_add_child(*methodNode, resourceUri, + p->simple.name, p->simple.value); + if (xmlNodeParam =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not create simple param")); + goto cleanup; + } + + result =3D 0; + + cleanup: + return result; +} + +static int +hypervSerializeEprParam(hypervParamPtr p, hypervPrivate *priv, + const char *resourceUri, WsXmlDocH doc, WsXmlNodeH *methodNode) +{ + int result =3D -1; + WsXmlNodeH xmlNodeParam =3D NULL, + xmlNodeTemp =3D NULL, + xmlNodeAddr =3D NULL, + xmlNodeRef =3D NULL; + xmlNodePtr xmlNodeAddrPtr =3D NULL, + xmlNodeRefPtr =3D NULL; + WsXmlDocH xmlDocResponse =3D NULL; + xmlDocPtr docPtr =3D (xmlDocPtr) doc->parserDoc; + WsXmlNsH ns =3D NULL; + client_opt_t *options =3D NULL; + filter_t *filter =3D NULL; + char *enumContext =3D NULL; + char *query_string =3D NULL; + + /* init and set up options */ + options =3D wsmc_options_init(); + if (!options) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not init opt= ions")); + goto cleanup; + } + wsmc_set_action_option(options, FLAG_ENUMERATION_ENUM_EPR); + + /* Get query and create filter based on it */ + query_string =3D virBufferContentAndReset(p->epr.query); + filter =3D filter_create_simple(WSM_WQL_FILTER_DIALECT, query_string); + if (!filter) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not create W= QL filter")); + goto cleanup; + } + + /* enumerate based on the filter from this query */ + xmlDocResponse =3D wsmc_action_enumerate(priv->client, p->epr.info->ro= otUri, + options, filter); + if (hypervVerifyResponse(priv->client, xmlDocResponse, "enumeration") = < 0) + goto cleanup; + + /* Get context */ + enumContext =3D wsmc_get_enum_context(xmlDocResponse); + ws_xml_destroy_doc(xmlDocResponse); + + /* Pull using filter and enum context */ + xmlDocResponse =3D wsmc_action_pull(priv->client, resourceUri, options, + filter, enumContext); + + if (hypervVerifyResponse(priv->client, xmlDocResponse, "pull") < 0) + goto cleanup; + + /* drill down and extract EPR node children */ + if (!(xmlNodeTemp =3D ws_xml_get_soap_body(xmlDocResponse))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not get SOAP= body")); + goto cleanup; + } + + if (!(xmlNodeTemp =3D ws_xml_get_child(xmlNodeTemp, 0, XML_NS_ENUMERAT= ION, + WSENUM_PULL_RESP))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not get resp= onse")); + goto cleanup; + } + + if (!(xmlNodeTemp =3D ws_xml_get_child(xmlNodeTemp, 0, XML_NS_ENUMERAT= ION, WSENUM_ITEMS))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not get resp= onse items")); + goto cleanup; + } + + if (!(xmlNodeTemp =3D ws_xml_get_child(xmlNodeTemp, 0, XML_NS_ADDRESSI= NG, WSA_EPR))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not get EPR = items")); + goto cleanup; + } + + if (!(xmlNodeAddr =3D ws_xml_get_child(xmlNodeTemp, 0, XML_NS_ADDRESSI= NG, + WSA_ADDRESS))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not get EPR = address")); + goto cleanup; + } + + if (!(xmlNodeAddrPtr =3D xmlDocCopyNode((xmlNodePtr) xmlNodeAddr, docP= tr, 1))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not copy EPR= address")); + goto cleanup; + } + + if (!(xmlNodeRef =3D ws_xml_get_child(xmlNodeTemp, 0, XML_NS_ADDRESSIN= G, + WSA_REFERENCE_PARAMETERS))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not lookup EPR item reference parameters")); + goto cleanup; + } + + if (!(xmlNodeRefPtr =3D xmlDocCopyNode((xmlNodePtr) xmlNodeRef, docPtr= , 1))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not copy EPR item reference parameters")); + goto cleanup; + } + + /* now build a new xml doc with the EPR node children */ + if (!(xmlNodeParam =3D ws_xml_add_child(*methodNode, resourceUri, + p->epr.name, NULL))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add child node to xmlNodeParam")); + goto cleanup; + } + + if (!(ns =3D ws_xml_ns_add(xmlNodeParam, + "http://schemas.xmlsoap.org/ws/2004/08/addressing", "a= "))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not set namespace address for xmlNodeParam")); + goto cleanup; + } + + ns =3D NULL; + if (!(ns =3D ws_xml_ns_add(xmlNodeParam, + "http://schemas.dmtf.org/wbem/wsman/1/wsman.xsd", "w")= )) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not set wsman namespace address for xmlNodeParam"= )); + goto cleanup; + } + + if (xmlAddChild((xmlNodePtr) *methodNode, (xmlNodePtr) xmlNodeParam) = =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add child to xml parent node")); + goto cleanup; + } + + if (xmlAddChild((xmlNodePtr) xmlNodeParam, xmlNodeAddrPtr) =3D=3D NULL= ) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add child to xml parent node")); + goto cleanup; + } + + if (xmlAddChild((xmlNodePtr) xmlNodeParam, xmlNodeRefPtr) =3D=3D NULL)= { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add child to xml parent node")); + goto cleanup; + } + + /* we did it! */ + result =3D 0; + + cleanup: + if (options !=3D NULL) + wsmc_options_destroy(options); + if (filter !=3D NULL) + filter_destroy(filter); + ws_xml_destroy_doc(xmlDocResponse); + VIR_FREE(enumContext); + VIR_FREE(query_string); + return result; +} + +static int +hypervSerializeEmbeddedParam(hypervParamPtr p, const char *resourceUri, + WsXmlNodeH *methodNode) +{ + int result =3D -1; + WsXmlNodeH xmlNodeInstance =3D NULL, + xmlNodeProperty =3D NULL, + xmlNodeParam =3D NULL, + xmlNodeArray =3D NULL; + WsXmlDocH xmlDocTemp =3D NULL, + xmlDocCdata =3D NULL; + xmlBufferPtr xmlBufferNode =3D NULL; + const xmlChar *xmlCharCdataContent =3D NULL; + xmlNodePtr xmlNodeCdata =3D NULL; + hypervWmiClassInfoPtr classInfo =3D p->embedded.info; + virHashKeyValuePairPtr items =3D NULL; + hypervCimTypePtr property =3D NULL; + int numKeys =3D -1; + int len =3D 0, i =3D 0; + + if (!(xmlNodeParam =3D ws_xml_add_child(*methodNode, resourceUri, p->e= mbedded.name, + NULL))) { + virReportError(VIR_ERR_INTERNAL_ERROR, _("Could not add child node= %s"), + p->embedded.name); + goto cleanup; + } + + /* create the temp xml doc */ + + /* start with the INSTANCE node */ + if (!(xmlDocTemp =3D ws_xml_create_doc(NULL, "INSTANCE"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not create temporary xml doc")); + goto cleanup; + } + + if (!(xmlNodeInstance =3D xml_parser_get_root(xmlDocTemp))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not get temp xml doc root")); + goto cleanup; + } + + /* add CLASSNAME node to INSTANCE node */ + if (ws_xml_add_node_attr(xmlNodeInstance, NULL, "CLASSNAME", + classInfo->name) =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add attribute to node")); + goto cleanup; + } + + /* retrieve parameters out of hash table */ + numKeys =3D virHashSize(p->embedded.table); + items =3D virHashGetItems(p->embedded.table, NULL); + if (!items) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not read embedded param hash table")); + goto cleanup; + } + + /* Add the parameters */ + if (numKeys > 0) { + for (i =3D 0; i < numKeys; i++) { + const char *name =3D items[i].key; + const char *value =3D items[i].value; + + if (value !=3D NULL) { + if (hypervGetCimTypeInfo(classInfo->propertyInfo, name, + &property) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not read type information")); + goto cleanup; + } + + if (!(xmlNodeProperty =3D ws_xml_add_child(xmlNodeInstance= , NULL, + property->isArray ? "PROPERTY.ARRAY" : "PR= OPERTY", + NULL))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add child to XML node")); + goto cleanup; + } + + if (ws_xml_add_node_attr(xmlNodeProperty, NULL, "NAME", na= me) =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add attribute to XML node")); + goto cleanup; + } + + if (ws_xml_add_node_attr(xmlNodeProperty, NULL, "TYPE", pr= operty->type) =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add attribute to XML node")); + goto cleanup; + } + + /* If this attribute is an array, add VALUE.ARRAY node */ + if (property->isArray) { + if (!(xmlNodeArray =3D ws_xml_add_child(xmlNodePropert= y, NULL, + "VALUE.ARRAY", NULL))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add child to XML node")); + goto cleanup; + } + } + + /* add the child */ + if (ws_xml_add_child(property->isArray ? xmlNodeArray : xm= lNodeProperty, + NULL, "VALUE", value) =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add child to XML node")); + goto cleanup; + } + + xmlNodeArray =3D NULL; + xmlNodeProperty =3D NULL; + } + } + } + + /* create CDATA node */ + xmlBufferNode =3D xmlBufferCreate(); + if (xmlNodeDump(xmlBufferNode, (xmlDocPtr) xmlDocTemp->parserDoc, + (xmlNodePtr) xmlNodeInstance, 0, 0) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not get root of temp XML doc")); + goto cleanup; + } + + len =3D xmlBufferLength(xmlBufferNode); + xmlCharCdataContent =3D xmlBufferContent(xmlBufferNode); + if (!(xmlNodeCdata =3D xmlNewCDataBlock((xmlDocPtr) xmlDocCdata, + xmlCharCdataContent, len))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not create CDATA element")); + goto cleanup; + } + + /* Add CDATA node to the doc root */ + if (xmlAddChild((xmlNodePtr) xmlNodeParam, xmlNodeCdata) =3D=3D NULL) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not add CDATA to doc root")); + goto cleanup; + } + + /* we did it! */ + result =3D 0; + + cleanup: + ws_xml_destroy_doc(xmlDocCdata); + ws_xml_destroy_doc(xmlDocTemp); + if (!xmlBufferNode) + xmlBufferFree(xmlBufferNode); + return result; +} + + +/* + * hypervInvokeMethod: + * @priv: hypervPrivate object associated with the connection + * @params: object containing the all necessary information for method + * invocation + * @res: Optional out parameter to contain the response XML. + * + * Performs an invocation described by @params, and optionally returns the + * XML containing the result. Returns -1 on failure, 0 on success. + */ +int +hypervInvokeMethod(hypervPrivate *priv, hypervInvokeParamsListPtr params, + WsXmlDocH *res) +{ + int result =3D -1; + size_t i =3D 0; + int returnCode; + WsXmlDocH paramsDocRoot =3D NULL; + client_opt_t *options =3D NULL; + WsXmlDocH response =3D NULL; + WsXmlNodeH methodNode =3D NULL; + char *returnValue_xpath =3D NULL; + char *jobcode_instance_xpath =3D NULL; + char *returnValue =3D NULL; + char *instanceID =3D NULL; + bool completed =3D false; + virBuffer query =3D VIR_BUFFER_INITIALIZER; + Msvm_ConcreteJob *job =3D NULL; + int jobState =3D -1; + hypervParamPtr p =3D NULL; + + if (hypervCreateInvokeXmlDoc(params, ¶msDocRoot) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Could not create XML document")); + goto cleanup; + } + + methodNode =3D xml_parser_get_root(paramsDocRoot); + if (methodNode =3D=3D NULL) + goto cleanup; + + /* Serialize parameters */ + for (i =3D 0; i < params->nbParams; i++) { + p =3D &(params->params[i]); + + switch (p->type) { + case HYPERV_SIMPLE_PARAM: + if (hypervSerializeSimpleParam(p, params->resourceUri, + &methodNode) < 0) + goto cleanup; + break; + case HYPERV_EPR_PARAM: + if (hypervSerializeEprParam(p, priv, params->resourceUri, + paramsDocRoot, &methodNode) < 0) + goto cleanup; + break; + case HYPERV_EMBEDDED_PARAM: + if (hypervSerializeEmbeddedParam(p, params->resourceUri, + &methodNode) < 0) + goto cleanup; + break; + default: + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Unknown parameter type")); + goto cleanup; + } + } + + /* Invoke the method and get the response */ + + options =3D wsmc_options_init(); + + if (!options) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not init opt= ions")); + goto cleanup; + } + + wsmc_add_selectors_from_str(options, params->selector); + + /* do the invoke */ + response =3D wsmc_action_invoke(priv->client, params->resourceUri, opt= ions, + params->method, paramsDocRoot); + + /* check return code of invocation */ + if (virAsprintf(&returnValue_xpath, "/s:Envelope/s:Body/p:%s_OUTPUT/p:= ReturnValue", + params->method) < 0) + goto cleanup; + + returnValue =3D ws_xml_get_xpath_value(response, returnValue_xpath); + if (!returnValue) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Could not get return value for %s invocation"), + params->method); + } + + if (virStrToLong_i(returnValue, NULL, 10, &returnCode) < 0) + goto cleanup; + + if (returnCode =3D=3D CIM_RETURNCODE_TRANSITION_STARTED) { + if (virAsprintf(&jobcode_instance_xpath, + "/s:Envelope/s:Body/p:%s_OUTPUT/p:Job/a:ReferenceParam= eters/" + "w:SelectorSet/w:Selector[@Name=3D'InstanceID']", + params->method) < 0) { + goto cleanup; + } + + instanceID =3D ws_xml_get_xpath_value(response, jobcode_instance_x= path); + if (!instanceID) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Could not get instance ID for %s invocation"= ), + params->method); + goto cleanup; + } + + /* Poll every 100 ms until the job completes or fails */ + while (!completed) { + virBufferAddLit(&query, MSVM_CONCRETEJOB_WQL_SELECT); + virBufferAsprintf(&query, "where InstanceID =3D \"%s\"", insta= nceID); + + if (hypervGetMsvmConcreteJobList(priv, &query, &job) < 0 + || job =3D=3D NULL) + goto cleanup; + + jobState =3D job->data.common->JobState; + switch (jobState) { + case MSVM_CONCRETEJOB_JOBSTATE_NEW: + case MSVM_CONCRETEJOB_JOBSTATE_STARTING: + case MSVM_CONCRETEJOB_JOBSTATE_RUNNING: + case MSVM_CONCRETEJOB_JOBSTATE_SHUTTING_DOWN: + hypervFreeObject(priv, (hypervObject *) job); + job =3D NULL; + usleep(100 * 1000); /* sleep 100 ms */ + continue; + case MSVM_CONCRETEJOB_JOBSTATE_COMPLETED: + completed =3D true; + break; + case MSVM_CONCRETEJOB_JOBSTATE_TERMINATED: + case MSVM_CONCRETEJOB_JOBSTATE_KILLED: + case MSVM_CONCRETEJOB_JOBSTATE_EXCEPTION: + case MSVM_CONCRETEJOB_JOBSTATE_SERVICE: + goto cleanup; + default: + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("Unknown invocation state")); + goto cleanup; + } + } + } else if (returnCode !=3D CIM_RETURNCODE_COMPLETED_WITH_NO_ERROR) { + virReportError(VIR_ERR_INTERNAL_ERROR, _("Invocation of %s returne= d an error: %s (%d)"), + params->method, hypervReturnCodeToString(returnCode), + returnCode); + goto cleanup; + } + + if (res !=3D NULL) + *res =3D response; + + result =3D 0; + + cleanup: + if (options) + wsmc_options_destroy(options); + if (response && (res =3D=3D NULL)) + ws_xml_destroy_doc(response); + VIR_FREE(returnValue_xpath); + VIR_FREE(jobcode_instance_xpath); + VIR_FREE(returnValue); + VIR_FREE(instanceID); + virBufferFreeAndReset(&query); + hypervFreeObject(priv, (hypervObject *) job); + hypervFreeInvokeParams(params); + return result; +} =20 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *= * * * Object diff --git a/src/hyperv/hyperv_wmi.h b/src/hyperv/hyperv_wmi.h index c2a0592..ac86ae0 100644 --- a/src/hyperv/hyperv_wmi.h +++ b/src/hyperv/hyperv_wmi.h @@ -151,6 +151,9 @@ int hypervSetEmbeddedProperty(virHashTablePtr table, co= nst char *name, int hypervAddEmbeddedParam(hypervInvokeParamsListPtr params, hypervPrivate= *priv, const char *name, virHashTablePtr table, hypervWmiClassInfoListPtr= info); =20 +int hypervInvokeMethod(hypervPrivate *priv, hypervInvokeParamsListPtr para= ms, + WsXmlDocH *res); + /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *= * * * CIM/Msvm_ReturnCode */ diff --git a/src/hyperv/openwsman.h b/src/hyperv/openwsman.h index f66ed86..fc2958f 100644 --- a/src/hyperv/openwsman.h +++ b/src/hyperv/openwsman.h @@ -43,4 +43,8 @@ # define SER_NS_INT64(ns, n, x) SER_NS_INT64_FLAGS(ns, n, x, 0) # endif =20 +/* wsman-xml.h */ +WsXmlDocH ws_xml_create_doc(const char *rootNsUri, const char *rootName); +WsXmlNodeH xml_parser_get_root(WsXmlDocH doc); + #endif /* __OPENWSMAN_H__ */ --=20 2.9.3 -- libvir-list mailing list libvir-list@redhat.com https://www.redhat.com/mailman/listinfo/libvir-list