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Improve error messages when XML is not well-formed.
* src/domain_conf.c, src/network_conf.c, src/storage_conf.c: Improve error messages from commands such as 'virsh define' when the XML is not well-formed by passing libxml2 errors back out through virterror.
This commit is contained in:
parent
eba65e1c6d
commit
cf11bb2249
@ -1,3 +1,11 @@
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Fri Aug 1 10:38:00 BST 2008 Richard W.M. Jones <rjones@redhat.com>
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Improve error messages when XML is not well-formed.
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* src/domain_conf.c, src/network_conf.c, src/storage_conf.c:
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Improve error messages from commands such as 'virsh define'
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when the XML is not well-formed by passing libxml2 errors
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back out through virterror.
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Fri Aug 1 08:40:48 CEST 2008 Daniel Veillard <veillard@redhat.com>
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* docs/formatdomain.html docs/formatdomain.html.in docs/libvirt-api.xml
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@ -1838,32 +1838,65 @@ static virDomainDefPtr virDomainDefParseXML(virConnectPtr conn,
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return NULL;
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}
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/* Called from SAX on parsing errors in the XML. */
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static void
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catchXMLError (void *ctx, const char *msg ATTRIBUTE_UNUSED, ...)
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{
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xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
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if (ctxt) {
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virConnectPtr conn = ctxt->_private;
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if (conn &&
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conn->err.code == VIR_ERR_NONE &&
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ctxt->lastError.level == XML_ERR_FATAL &&
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ctxt->lastError.message != NULL) {
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virDomainReportError (conn, VIR_ERR_XML_DETAIL,
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_("at line %d: %s"),
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ctxt->lastError.line,
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ctxt->lastError.message);
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}
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}
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}
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virDomainDefPtr virDomainDefParseString(virConnectPtr conn,
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virCapsPtr caps,
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const char *xmlStr)
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{
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xmlDocPtr xml;
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xmlParserCtxtPtr pctxt;
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xmlDocPtr xml = NULL;
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xmlNodePtr root;
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virDomainDefPtr def = NULL;
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if (!(xml = xmlReadDoc(BAD_CAST xmlStr, "domain.xml", NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOERROR | XML_PARSE_NOWARNING))) {
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virDomainReportError(conn, VIR_ERR_XML_ERROR, NULL);
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return NULL;
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/* Set up a parser context so we can catch the details of XML errors. */
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pctxt = xmlNewParserCtxt ();
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if (!pctxt || !pctxt->sax)
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goto cleanup;
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pctxt->sax->error = catchXMLError;
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pctxt->_private = conn;
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if (conn) virResetError (&conn->err);
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xml = xmlCtxtReadDoc (pctxt, BAD_CAST xmlStr, "domain.xml", NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOWARNING);
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if (!xml) {
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if (conn && conn->err.code == VIR_ERR_NONE)
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virDomainReportError(conn, VIR_ERR_XML_ERROR,
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_("failed to parse xml document"));
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goto cleanup;
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}
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if ((root = xmlDocGetRootElement(xml)) == NULL) {
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virDomainReportError(conn, VIR_ERR_INTERNAL_ERROR,
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"%s", _("missing root element"));
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xmlFreeDoc(xml);
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return NULL;
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goto cleanup;
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}
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def = virDomainDefParseNode(conn, caps, xml, root);
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xmlFreeDoc(xml);
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cleanup:
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xmlFreeParserCtxt (pctxt);
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xmlFreeDoc (xml);
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return def;
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}
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@ -1871,27 +1904,40 @@ virDomainDefPtr virDomainDefParseFile(virConnectPtr conn,
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virCapsPtr caps,
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const char *filename)
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{
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xmlDocPtr xml;
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xmlParserCtxtPtr pctxt;
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xmlDocPtr xml = NULL;
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xmlNodePtr root;
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virDomainDefPtr def = NULL;
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if (!(xml = xmlReadFile(filename, NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOERROR | XML_PARSE_NOWARNING))) {
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virDomainReportError(conn, VIR_ERR_XML_ERROR, NULL);
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return NULL;
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/* Set up a parser context so we can catch the details of XML errors. */
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pctxt = xmlNewParserCtxt ();
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if (!pctxt || !pctxt->sax)
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goto cleanup;
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pctxt->sax->error = catchXMLError;
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pctxt->_private = conn;
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if (conn) virResetError (&conn->err);
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xml = xmlCtxtReadFile (pctxt, filename, NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOWARNING);
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if (!xml) {
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if (conn && conn->err.code == VIR_ERR_NONE)
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virDomainReportError(conn, VIR_ERR_XML_ERROR,
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_("failed to parse xml document"));
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goto cleanup;
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}
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if ((root = xmlDocGetRootElement(xml)) == NULL) {
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virDomainReportError(conn, VIR_ERR_INTERNAL_ERROR,
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"%s", _("missing root element"));
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xmlFreeDoc(xml);
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return NULL;
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goto cleanup;
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}
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def = virDomainDefParseNode(conn, caps, xml, root);
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xmlFreeDoc(xml);
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cleanup:
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xmlFreeParserCtxt (pctxt);
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xmlFreeDoc (xml);
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return def;
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}
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@ -348,57 +348,104 @@ virNetworkDefParseXML(virConnectPtr conn,
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return NULL;
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}
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/* Called from SAX on parsing errors in the XML. */
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static void
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catchXMLError (void *ctx, const char *msg ATTRIBUTE_UNUSED, ...)
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{
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xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
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if (ctxt) {
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virConnectPtr conn = ctxt->_private;
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if (conn &&
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conn->err.code == VIR_ERR_NONE &&
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ctxt->lastError.level == XML_ERR_FATAL &&
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ctxt->lastError.message != NULL) {
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virNetworkReportError (conn, VIR_ERR_XML_DETAIL,
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_("at line %d: %s"),
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ctxt->lastError.line,
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ctxt->lastError.message);
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}
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}
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}
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virNetworkDefPtr virNetworkDefParseString(virConnectPtr conn,
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const char *xmlStr)
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{
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xmlDocPtr xml;
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xmlParserCtxtPtr pctxt;
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xmlDocPtr xml = NULL;
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xmlNodePtr root;
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virNetworkDefPtr def;
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virNetworkDefPtr def = NULL;
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if (!(xml = xmlReadDoc(BAD_CAST xmlStr, "network.xml", NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOERROR | XML_PARSE_NOWARNING))) {
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virNetworkReportError(conn, VIR_ERR_XML_ERROR, NULL);
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return NULL;
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/* Set up a parser context so we can catch the details of XML errors. */
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pctxt = xmlNewParserCtxt ();
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if (!pctxt || !pctxt->sax)
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goto cleanup;
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pctxt->sax->error = catchXMLError;
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pctxt->_private = conn;
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if (conn) virResetError (&conn->err);
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xml = xmlCtxtReadDoc (pctxt, BAD_CAST xmlStr, "network.xml", NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOWARNING);
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if (!xml) {
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if (conn && conn->err.code == VIR_ERR_NONE)
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virNetworkReportError(conn, VIR_ERR_XML_ERROR,
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_("failed to parse xml document"));
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goto cleanup;
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}
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if ((root = xmlDocGetRootElement(xml)) == NULL) {
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virNetworkReportError(conn, VIR_ERR_INTERNAL_ERROR,
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"%s", _("missing root element"));
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xmlFreeDoc(xml);
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return NULL;
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goto cleanup;
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}
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def = virNetworkDefParseNode(conn, xml, root);
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xmlFreeDoc(xml);
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cleanup:
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xmlFreeParserCtxt (pctxt);
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xmlFreeDoc (xml);
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return def;
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}
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virNetworkDefPtr virNetworkDefParseFile(virConnectPtr conn,
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const char *filename)
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{
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xmlDocPtr xml;
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xmlParserCtxtPtr pctxt;
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xmlDocPtr xml = NULL;
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xmlNodePtr root;
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virNetworkDefPtr def;
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virNetworkDefPtr def = NULL;
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if (!(xml = xmlReadFile(filename, NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOERROR | XML_PARSE_NOWARNING))) {
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virNetworkReportError(conn, VIR_ERR_XML_ERROR, NULL);
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return NULL;
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/* Set up a parser context so we can catch the details of XML errors. */
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pctxt = xmlNewParserCtxt ();
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if (!pctxt || !pctxt->sax)
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goto cleanup;
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pctxt->sax->error = catchXMLError;
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pctxt->_private = conn;
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if (conn) virResetError (&conn->err);
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xml = xmlCtxtReadFile (pctxt, filename, NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOWARNING);
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if (!xml) {
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if (conn && conn->err.code == VIR_ERR_NONE)
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virNetworkReportError(conn, VIR_ERR_XML_ERROR,
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_("failed to parse xml document"));
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goto cleanup;
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}
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if ((root = xmlDocGetRootElement(xml)) == NULL) {
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virNetworkReportError(conn, VIR_ERR_INTERNAL_ERROR,
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"%s", _("missing root element"));
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xmlFreeDoc(xml);
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return NULL;
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goto cleanup;
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}
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def = virNetworkDefParseNode(conn, xml, root);
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xmlFreeDoc(xml);
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cleanup:
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xmlFreeParserCtxt (pctxt);
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xmlFreeDoc (xml);
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return def;
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}
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@ -361,22 +361,53 @@ virStoragePoolDefParseDoc(virConnectPtr conn,
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return NULL;
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}
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/* Called from SAX on parsing errors in the XML. */
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static void
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catchXMLError (void *ctx, const char *msg ATTRIBUTE_UNUSED, ...)
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{
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xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
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if (ctxt) {
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virConnectPtr conn = ctxt->_private;
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if (conn &&
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conn->err.code == VIR_ERR_NONE &&
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ctxt->lastError.level == XML_ERR_FATAL &&
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ctxt->lastError.message != NULL) {
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virStorageReportError (conn, VIR_ERR_XML_DETAIL,
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_("at line %d: %s"),
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ctxt->lastError.line,
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ctxt->lastError.message);
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}
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}
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}
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virStoragePoolDefPtr
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virStoragePoolDefParse(virConnectPtr conn,
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const char *xmlStr,
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const char *filename) {
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virStoragePoolDefPtr ret = NULL;
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xmlParserCtxtPtr pctxt;
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xmlDocPtr xml = NULL;
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xmlNodePtr node = NULL;
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xmlXPathContextPtr ctxt = NULL;
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if (!(xml = xmlReadDoc(BAD_CAST xmlStr,
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filename ? filename : "storage.xml",
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NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOERROR | XML_PARSE_NOWARNING))) {
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virStorageReportError(conn, VIR_ERR_XML_ERROR,
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"%s", _("malformed xml document"));
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/* Set up a parser context so we can catch the details of XML errors. */
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pctxt = xmlNewParserCtxt ();
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if (!pctxt || !pctxt->sax)
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goto cleanup;
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pctxt->sax->error = catchXMLError;
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pctxt->_private = conn;
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if (conn) virResetError (&conn->err);
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xml = xmlCtxtReadDoc (pctxt, BAD_CAST xmlStr,
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filename ? filename : "storage.xml", NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOWARNING);
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if (!xml) {
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if (conn && conn->err.code == VIR_ERR_NONE)
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virStorageReportError(conn, VIR_ERR_XML_ERROR,
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_("failed to parse xml document"));
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goto cleanup;
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}
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@ -396,12 +427,14 @@ virStoragePoolDefParse(virConnectPtr conn,
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ret = virStoragePoolDefParseDoc(conn, ctxt, node);
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xmlFreeParserCtxt (pctxt);
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xmlXPathFreeContext(ctxt);
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xmlFreeDoc(xml);
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return ret;
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cleanup:
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xmlFreeParserCtxt (pctxt);
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xmlXPathFreeContext(ctxt);
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xmlFreeDoc(xml);
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return NULL;
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@ -725,15 +758,27 @@ virStorageVolDefParse(virConnectPtr conn,
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const char *xmlStr,
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const char *filename) {
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virStorageVolDefPtr ret = NULL;
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xmlParserCtxtPtr pctxt;
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xmlDocPtr xml = NULL;
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xmlNodePtr node = NULL;
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xmlXPathContextPtr ctxt = NULL;
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if (!(xml = xmlReadDoc(BAD_CAST xmlStr, filename ? filename : "storage.xml", NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOERROR | XML_PARSE_NOWARNING))) {
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virStorageReportError(conn, VIR_ERR_XML_ERROR,
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"%s", _("malformed xml document"));
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/* Set up a parser context so we can catch the details of XML errors. */
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pctxt = xmlNewParserCtxt ();
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if (!pctxt || !pctxt->sax)
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goto cleanup;
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pctxt->sax->error = catchXMLError;
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pctxt->_private = conn;
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if (conn) virResetError (&conn->err);
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xml = xmlCtxtReadDoc (pctxt, BAD_CAST xmlStr,
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filename ? filename : "storage.xml", NULL,
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XML_PARSE_NOENT | XML_PARSE_NONET |
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XML_PARSE_NOWARNING);
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if (!xml) {
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if (conn && conn->err.code == VIR_ERR_NONE)
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virStorageReportError(conn, VIR_ERR_XML_ERROR,
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_("failed to parse xml document"));
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goto cleanup;
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}
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@ -753,12 +798,14 @@ virStorageVolDefParse(virConnectPtr conn,
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ret = virStorageVolDefParseDoc(conn, pool, ctxt, node);
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xmlFreeParserCtxt (pctxt);
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xmlXPathFreeContext(ctxt);
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xmlFreeDoc(xml);
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return ret;
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cleanup:
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xmlFreeParserCtxt (pctxt);
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xmlXPathFreeContext(ctxt);
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xmlFreeDoc(xml);
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return NULL;
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