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#include <libxml/catalog.h> |
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#include <libxml/parser.h> |
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#include <libxml/tree.h> |
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#include <libxml/xmlerror.h> |
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#include <libxml/xinclude.h> |
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#include "fuzz.h" |
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int |
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LLVMFuzzerInitialize(int *argc ATTRIBUTE_UNUSED, |
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char ***argv ATTRIBUTE_UNUSED) { |
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xmlFuzzMemSetup(); |
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xmlInitParser(); |
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#ifdef LIBXML_CATALOG_ENABLED |
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xmlInitializeCatalog(); |
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xmlCatalogSetDefaults(XML_CATA_ALLOW_NONE); |
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#endif |
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xmlSetGenericErrorFunc(NULL, xmlFuzzErrorFunc); |
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return 0; |
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} |
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int |
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LLVMFuzzerTestOneInput(const char *data, size_t size) { |
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xmlParserCtxtPtr ctxt; |
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xmlDocPtr doc; |
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const char *docBuffer, *docUrl; |
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size_t failurePos, docSize; |
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int opts; |
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xmlFuzzDataInit(data, size); |
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opts = (int) xmlFuzzReadInt(4); |
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opts |= XML_PARSE_XINCLUDE; |
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failurePos = xmlFuzzReadInt(4) % (size + 100); |
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xmlFuzzReadEntities(); |
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docBuffer = xmlFuzzMainEntity(&docSize); |
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docUrl = xmlFuzzMainUrl(); |
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if (docBuffer == NULL) |
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goto exit; |
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xmlFuzzInjectFailure(failurePos); |
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ctxt = xmlNewParserCtxt(); |
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if (ctxt != NULL) { |
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xmlXIncludeCtxtPtr xinc; |
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xmlDocPtr copy; |
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xmlCtxtSetResourceLoader(ctxt, xmlFuzzResourceLoader, NULL); |
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doc = xmlCtxtReadMemory(ctxt, docBuffer, docSize, docUrl, NULL, opts); |
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xmlFuzzCheckFailureReport("xmlCtxtReadMemory", |
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doc == NULL && ctxt->errNo == XML_ERR_NO_MEMORY, |
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doc == NULL && ctxt->errNo == XML_IO_EIO); |
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xinc = xmlXIncludeNewContext(doc); |
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xmlXIncludeSetResourceLoader(xinc, xmlFuzzResourceLoader, NULL); |
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xmlXIncludeSetFlags(xinc, opts); |
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xmlXIncludeProcessNode(xinc, (xmlNodePtr) doc); |
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if (doc != NULL) { |
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xmlFuzzCheckFailureReport("xmlXIncludeProcessNode", |
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xinc == NULL || |
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xmlXIncludeGetLastError(xinc) == XML_ERR_NO_MEMORY, |
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xinc != NULL && |
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xmlXIncludeGetLastError(xinc) == XML_IO_EIO); |
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} |
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xmlXIncludeFreeContext(xinc); |
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xmlFuzzResetFailure(); |
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copy = xmlCopyDoc(doc, 1); |
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if (doc != NULL) |
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xmlFuzzCheckFailureReport("xmlCopyNode", copy == NULL, 0); |
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xmlFreeDoc(copy); |
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xmlFreeDoc(doc); |
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xmlFreeParserCtxt(ctxt); |
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} |
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exit: |
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xmlFuzzInjectFailure(0); |
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xmlFuzzDataCleanup(); |
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xmlResetLastError(); |
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return(0); |
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} |
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