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Add virXMLValidateAgainstSchema helper method
Add a helper method that can validate an XML document against an RNG schema
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@ -304,6 +304,7 @@ typedef enum {
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VIR_ERR_STORAGE_VOL_EXIST = 90, /* the storage vol already exists */
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VIR_ERR_CPU_INCOMPATIBLE = 91, /* given CPU is incompatible with host
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CPU*/
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VIR_ERR_XML_INVALID_SCHEMA = 92, /* XML document doens't validate against schema */
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} virErrorNumber;
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/**
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@ -234,11 +234,15 @@
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# define VIR_WARNINGS_NO_CAST_ALIGN \
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_Pragma ("GCC diagnostic push") \
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_Pragma ("GCC diagnostic ignored \"-Wcast-align\"")
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# define VIR_WARNINGS_NO_PRINTF \
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_Pragma ("GCC diagnostic push") \
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_Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=format\"")
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# define VIR_WARNINGS_RESET \
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_Pragma ("GCC diagnostic pop")
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# else
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# define VIR_WARNINGS_NO_CAST_ALIGN
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# define VIR_WARNINGS_NO_PRINTF
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# define VIR_WARNINGS_RESET
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# endif
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@ -2252,6 +2252,7 @@ virXMLParseHelper;
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virXMLPickShellSafeComment;
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virXMLPropString;
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virXMLSaveFile;
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virXMLValidateAgainstSchema;
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virXPathBoolean;
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virXPathInt;
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virXPathLong;
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@ -1285,6 +1285,12 @@ virErrorMsg(virErrorNumber error, const char *info)
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else
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errmsg = _("the CPU is incompatible with host CPU: %s");
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break;
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case VIR_ERR_XML_INVALID_SCHEMA:
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if (info == NULL)
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errmsg = _("XML document failed to validate against schema");
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else
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errmsg = _("XML document failed to validate against schema: %s");
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break;
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}
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return errmsg;
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}
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@ -1082,3 +1082,82 @@ virXMLInjectNamespace(xmlNodePtr node,
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return 0;
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}
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static void catchRNGError(void *ctx,
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const char *msg,
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...)
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{
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virBufferPtr buf = ctx;
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va_list args;
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va_start(args, msg);
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VIR_WARNINGS_NO_PRINTF;
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virBufferVasprintf(buf, msg, args);
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VIR_WARNINGS_RESET;
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va_end(args);
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}
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static void ignoreRNGError(void *ctx ATTRIBUTE_UNUSED,
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const char *msg ATTRIBUTE_UNUSED,
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...)
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{}
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int
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virXMLValidateAgainstSchema(const char *schemafile,
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xmlDocPtr doc)
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{
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xmlRelaxNGParserCtxtPtr rngParser = NULL;
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xmlRelaxNGPtr rng = NULL;
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xmlRelaxNGValidCtxtPtr rngValid = NULL;
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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int ret = -1;
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if (!(rngParser = xmlRelaxNGNewParserCtxt(schemafile))) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Unable to create RNG parser for %s"),
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schemafile);
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goto cleanup;
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}
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xmlRelaxNGSetParserErrors(rngParser,
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catchRNGError,
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ignoreRNGError,
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&buf);
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if (!(rng = xmlRelaxNGParse(rngParser))) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Unable to parse RNG %s: %s"),
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schemafile, virBufferCurrentContent(&buf));
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goto cleanup;
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}
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if (!(rngValid = xmlRelaxNGNewValidCtxt(rng))) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Unable to create RNG validation context %s"),
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schemafile);
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goto cleanup;
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}
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xmlRelaxNGSetValidErrors(rngValid,
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catchRNGError,
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ignoreRNGError,
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&buf);
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if (xmlRelaxNGValidateDoc(rngValid, doc) != 0) {
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virReportError(VIR_ERR_XML_INVALID_SCHEMA,
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_("Unable to validate doc against %s\n%s"),
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schemafile, virBufferCurrentContent(&buf));
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goto cleanup;
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}
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ret = 0;
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cleanup:
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virBufferFreeAndReset(&buf);
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xmlRelaxNGFreeParserCtxt(rngParser);
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xmlRelaxNGFreeValidCtxt(rngValid);
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xmlRelaxNGFree(rng);
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return ret;
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}
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@ -28,6 +28,7 @@
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# include <libxml/parser.h>
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# include <libxml/tree.h>
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# include <libxml/xpath.h>
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# include <libxml/relaxng.h>
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int virXPathBoolean(const char *xpath,
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xmlXPathContextPtr ctxt);
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@ -176,4 +177,8 @@ int virXMLInjectNamespace(xmlNodePtr node,
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const char *uri,
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const char *key);
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int
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virXMLValidateAgainstSchema(const char *schemafile,
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xmlDocPtr xml);
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#endif /* __VIR_XML_H__ */
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