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error: Add helper functions to print errors and abort

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This commit is contained in:
Nick Wellnhofer 2024-07-15 14:35:47 +02:00
parent f6170b489c
commit 728869809e
9 changed files with 115 additions and 81 deletions
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108
catalog.c
View File

@ -231,6 +231,14 @@ xmlCatalogErr(xmlCatalogEntryPtr catal, xmlNodePtr node, int error,
xmlCatalogErrMemory();
}
static void
xmlCatalogPrintDebug(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
xmlVPrintErrorMessage(fmt, ap);
va_end(ap);
}
/************************************************************************
* *
@ -318,13 +326,13 @@ xmlFreeCatalogEntry(void *payload, const xmlChar *name ATTRIBUTE_UNUSED) {
if (xmlDebugCatalogs) {
if (ret->name != NULL)
fprintf(stderr,
xmlCatalogPrintDebug(
"Free catalog entry %s\n", ret->name);
else if (ret->value != NULL)
fprintf(stderr,
xmlCatalogPrintDebug(
"Free catalog entry %s\n", ret->value);
else
fprintf(stderr,
xmlCatalogPrintDebug(
"Free catalog entry\n");
}
@ -785,7 +793,7 @@ xmlConvertSGMLCatalog(xmlCatalogPtr catal) {
return(-1);
if (xmlDebugCatalogs) {
fprintf(stderr,
xmlCatalogPrintDebug(
"Converting SGML catalog to XML\n");
}
xmlHashScan(catal->sgml, xmlCatalogConvertEntry, &catal);
@ -1137,10 +1145,10 @@ xmlParseXMLCatalogOneNode(xmlNodePtr cur, xmlCatalogEntryType type,
if (URL != NULL) {
if (xmlDebugCatalogs > 1) {
if (nameValue != NULL)
fprintf(stderr,
xmlCatalogPrintDebug(
"Found %s: '%s' '%s'\n", name, nameValue, URL);
else
fprintf(stderr,
xmlCatalogPrintDebug(
"Found %s: '%s'\n", name, URL);
}
ret = xmlNewCatalogEntry(type, nameValue, uriValue, URL, prefer, cgroup);
@ -1309,13 +1317,13 @@ xmlParseXMLCatalogFile(xmlCatalogPrefer prefer, const xmlChar *filename) {
doc = xmlParseCatalogFile((const char *) filename);
if (doc == NULL) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Failed to parse catalog %s\n", filename);
return(NULL);
}
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"%d Parsing catalog %s\n", xmlGetThreadId(), filename);
cur = xmlDocGetRootElement(doc);
@ -1388,7 +1396,7 @@ xmlFetchXMLCatalogFile(xmlCatalogEntryPtr catal) {
xmlHashLookup(xmlCatalogXMLFiles, catal->URL);
if (doc != NULL) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Found %s in file hash\n", catal->URL);
if (catal->type == XML_CATA_CATALOG)
@ -1400,7 +1408,7 @@ xmlFetchXMLCatalogFile(xmlCatalogEntryPtr catal) {
return(0);
}
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"%s not found in file hash\n", catal->URL);
}
@ -1427,7 +1435,7 @@ xmlFetchXMLCatalogFile(xmlCatalogEntryPtr catal) {
xmlCatalogXMLFiles = xmlHashCreate(10);
if (xmlCatalogXMLFiles != NULL) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"%s added to file hash\n", catal->URL);
xmlHashAddEntry(xmlCatalogXMLFiles, catal->URL, doc);
}
@ -1473,7 +1481,7 @@ xmlAddXMLCatalog(xmlCatalogEntryPtr catal, const xmlChar *type,
typ = xmlGetXMLCatalogEntryType(type);
if (typ == XML_CATA_NONE) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Failed to add unknown element %s to catalog\n", type);
return(-1);
}
@ -1487,7 +1495,7 @@ xmlAddXMLCatalog(xmlCatalogEntryPtr catal, const xmlChar *type,
if ((orig != NULL) && (cur->type == typ) &&
(xmlStrEqual(orig, cur->name))) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Updating element %s to catalog\n", type);
if (cur->value != NULL)
xmlFree(cur->value);
@ -1503,7 +1511,7 @@ xmlAddXMLCatalog(xmlCatalogEntryPtr catal, const xmlChar *type,
}
}
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Adding element %s to catalog\n", type);
if (cur == NULL)
catal->children = xmlNewCatalogEntry(typ, orig, replace,
@ -1555,10 +1563,10 @@ xmlDelXMLCatalog(xmlCatalogEntryPtr catal, const xmlChar *value) {
(xmlStrEqual(value, cur->value))) {
if (xmlDebugCatalogs) {
if (cur->name != NULL)
fprintf(stderr,
xmlCatalogPrintDebug(
"Removing element %s from catalog\n", cur->name);
else
fprintf(stderr,
xmlCatalogPrintDebug(
"Removing element %s from catalog\n", cur->value);
}
cur->type = XML_CATA_REMOVED;
@ -1614,7 +1622,7 @@ xmlCatalogXMLResolve(xmlCatalogEntryPtr catal, const xmlChar *pubID,
case XML_CATA_SYSTEM:
if (xmlStrEqual(sysID, cur->name)) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Found system match %s, using %s\n",
cur->name, cur->URL);
catal->depth--;
@ -1643,7 +1651,7 @@ xmlCatalogXMLResolve(xmlCatalogEntryPtr catal, const xmlChar *pubID,
}
if (rewrite != NULL) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Using rewriting rule %s\n", rewrite->name);
ret = xmlStrdup(rewrite->URL);
if (ret != NULL)
@ -1678,7 +1686,7 @@ xmlCatalogXMLResolve(xmlCatalogEntryPtr catal, const xmlChar *pubID,
}
if (cur->children != NULL) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Trying system delegate %s\n", cur->URL);
ret = xmlCatalogListXMLResolve(
cur->children, NULL, sysID);
@ -1708,7 +1716,7 @@ xmlCatalogXMLResolve(xmlCatalogEntryPtr catal, const xmlChar *pubID,
case XML_CATA_PUBLIC:
if (xmlStrEqual(pubID, cur->name)) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Found public match %s\n", cur->name);
catal->depth--;
return(xmlStrdup(cur->URL));
@ -1757,7 +1765,7 @@ xmlCatalogXMLResolve(xmlCatalogEntryPtr catal, const xmlChar *pubID,
}
if (cur->children != NULL) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Trying public delegate %s\n", cur->URL);
ret = xmlCatalogListXMLResolve(
cur->children, pubID, NULL);
@ -1847,7 +1855,7 @@ xmlCatalogXMLResolveURI(xmlCatalogEntryPtr catal, const xmlChar *URI) {
case XML_CATA_URI:
if (xmlStrEqual(URI, cur->name)) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Found URI match %s\n", cur->name);
return(xmlStrdup(cur->URL));
}
@ -1874,7 +1882,7 @@ xmlCatalogXMLResolveURI(xmlCatalogEntryPtr catal, const xmlChar *URI) {
}
if (rewrite != NULL) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Using rewriting rule %s\n", rewrite->name);
ret = xmlStrdup(rewrite->URL);
if (ret != NULL)
@ -1909,7 +1917,7 @@ xmlCatalogXMLResolveURI(xmlCatalogEntryPtr catal, const xmlChar *URI) {
}
if (cur->children != NULL) {
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Trying URI delegate %s\n", cur->URL);
ret = xmlCatalogListXMLResolveURI(
cur->children, URI);
@ -1978,10 +1986,10 @@ xmlCatalogListXMLResolve(xmlCatalogEntryPtr catal, const xmlChar *pubID,
urnID = xmlCatalogUnWrapURN(pubID);
if (xmlDebugCatalogs) {
if (urnID == NULL)
fprintf(stderr,
xmlCatalogPrintDebug(
"Public URN ID %s expanded to NULL\n", pubID);
else
fprintf(stderr,
xmlCatalogPrintDebug(
"Public URN ID expanded to %s\n", urnID);
}
ret = xmlCatalogListXMLResolve(catal, urnID, sysID);
@ -1995,10 +2003,10 @@ xmlCatalogListXMLResolve(xmlCatalogEntryPtr catal, const xmlChar *pubID,
urnID = xmlCatalogUnWrapURN(sysID);
if (xmlDebugCatalogs) {
if (urnID == NULL)
fprintf(stderr,
xmlCatalogPrintDebug(
"System URN ID %s expanded to NULL\n", sysID);
else
fprintf(stderr,
xmlCatalogPrintDebug(
"System URN ID expanded to %s\n", urnID);
}
if (pubID == NULL)
@ -2062,10 +2070,10 @@ xmlCatalogListXMLResolveURI(xmlCatalogEntryPtr catal, const xmlChar *URI) {
urnID = xmlCatalogUnWrapURN(URI);
if (xmlDebugCatalogs) {
if (urnID == NULL)
fprintf(stderr,
xmlCatalogPrintDebug(
"URN ID %s expanded to NULL\n", URI);
else
fprintf(stderr,
xmlCatalogPrintDebug(
"URN ID expanded to %s\n", urnID);
}
ret = xmlCatalogListXMLResolve(catal, urnID, NULL);
@ -2744,7 +2752,7 @@ xmlACatalogResolveSystem(xmlCatalogPtr catal, const xmlChar *sysID) {
return(NULL);
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Resolve sysID %s\n", sysID);
if (catal->type == XML_XML_CATALOG_TYPE) {
@ -2779,7 +2787,7 @@ xmlACatalogResolvePublic(xmlCatalogPtr catal, const xmlChar *pubID) {
return(NULL);
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Resolve pubID %s\n", pubID);
if (catal->type == XML_XML_CATALOG_TYPE) {
@ -2818,13 +2826,13 @@ xmlACatalogResolve(xmlCatalogPtr catal, const xmlChar * pubID,
if (xmlDebugCatalogs) {
if ((pubID != NULL) && (sysID != NULL)) {
fprintf(stderr,
xmlCatalogPrintDebug(
"Resolve: pubID %s sysID %s\n", pubID, sysID);
} else if (pubID != NULL) {
fprintf(stderr,
xmlCatalogPrintDebug(
"Resolve: pubID %s\n", pubID);
} else {
fprintf(stderr,
xmlCatalogPrintDebug(
"Resolve: sysID %s\n", sysID);
}
}
@ -2861,7 +2869,7 @@ xmlACatalogResolveURI(xmlCatalogPtr catal, const xmlChar *URI) {
return(NULL);
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Resolve URI %s\n", URI);
if (catal->type == XML_XML_CATALOG_TYPE) {
@ -3198,7 +3206,7 @@ void
xmlCatalogCleanup(void) {
xmlRMutexLock(xmlCatalogMutex);
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Catalogs cleanup\n");
if (xmlCatalogXMLFiles != NULL)
xmlHashFree(xmlCatalogXMLFiles, xmlFreeCatalogHashEntryList);
@ -3441,19 +3449,19 @@ xmlCatalogSetDefaults(xmlCatalogAllow allow) {
if (xmlDebugCatalogs) {
switch (allow) {
case XML_CATA_ALLOW_NONE:
fprintf(stderr,
xmlCatalogPrintDebug(
"Disabling catalog usage\n");
break;
case XML_CATA_ALLOW_GLOBAL:
fprintf(stderr,
xmlCatalogPrintDebug(
"Allowing only global catalogs\n");
break;
case XML_CATA_ALLOW_DOCUMENT:
fprintf(stderr,
xmlCatalogPrintDebug(
"Allowing only catalogs from the document\n");
break;
case XML_CATA_ALLOW_ALL:
fprintf(stderr,
xmlCatalogPrintDebug(
"Allowing all catalogs\n");
break;
}
@ -3483,11 +3491,11 @@ xmlCatalogSetDefaultPrefer(xmlCatalogPrefer prefer) {
if (xmlDebugCatalogs) {
switch (prefer) {
case XML_CATA_PREFER_PUBLIC:
fprintf(stderr,
xmlCatalogPrintDebug(
"Setting catalog preference to PUBLIC\n");
break;
case XML_CATA_PREFER_SYSTEM:
fprintf(stderr,
xmlCatalogPrintDebug(
"Setting catalog preference to SYSTEM\n");
break;
default:
@ -3559,7 +3567,7 @@ xmlCatalogAddLocal(void *catalogs, const xmlChar *URL) {
return(catalogs);
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Adding document catalog %s\n", URL);
add = xmlNewCatalogEntry(XML_CATA_CATALOG, NULL, URL, NULL,
@ -3600,13 +3608,13 @@ xmlCatalogLocalResolve(void *catalogs, const xmlChar *pubID,
if (xmlDebugCatalogs) {
if ((pubID != NULL) && (sysID != NULL)) {
fprintf(stderr,
xmlCatalogPrintDebug(
"Local Resolve: pubID %s sysID %s\n", pubID, sysID);
} else if (pubID != NULL) {
fprintf(stderr,
xmlCatalogPrintDebug(
"Local Resolve: pubID %s\n", pubID);
} else {
fprintf(stderr,
xmlCatalogPrintDebug(
"Local Resolve: sysID %s\n", sysID);
}
}
@ -3640,7 +3648,7 @@ xmlCatalogLocalResolveURI(void *catalogs, const xmlChar *URI) {
return(NULL);
if (xmlDebugCatalogs)
fprintf(stderr,
xmlCatalogPrintDebug(
"Resolve URI %s\n", URI);
catal = (xmlCatalogEntryPtr) catalogs;
@ -3676,7 +3684,7 @@ xmlCatalogGetSystem(const xmlChar *sysID) {
xmlInitializeCatalog();
if (msg == 0) {
fprintf(stderr,
xmlPrintErrorMessage(
"Use of deprecated xmlCatalogGetSystem() call\n");
msg++;
}
@ -3720,7 +3728,7 @@ xmlCatalogGetPublic(const xmlChar *pubID) {
xmlInitializeCatalog();
if (msg == 0) {
fprintf(stderr,
xmlPrintErrorMessage(
"Use of deprecated xmlCatalogGetPublic() call\n");
msg++;
}

17
dict.c
View File

@ -25,6 +25,7 @@
#include <string.h>
#include "private/dict.h"
#include "private/error.h"
#include "private/globals.h"
#include "private/threads.h"
@ -958,21 +959,17 @@ xmlInitRandom(void) {
status = BCryptGenRandom(NULL, (unsigned char *) globalRngState,
sizeof(globalRngState),
BCRYPT_USE_SYSTEM_PREFERRED_RNG);
if (!BCRYPT_SUCCESS(status)) {
fprintf(stderr, "libxml2: BCryptGenRandom failed with "
"error code %lu\n", GetLastError());
abort();
}
if (!BCRYPT_SUCCESS(status))
xmlAbort("libxml2: BCryptGenRandom failed with error code %lu\n",
GetLastError());
#elif defined(HAVE_GETENTROPY)
while (1) {
if (getentropy(globalRngState, sizeof(globalRngState)) == 0)
break;
if (errno != EINTR) {
fprintf(stderr, "libxml2: getentropy failed with "
"error code %d\n", errno);
abort();
}
if (errno != EINTR)
xmlAbort("libxml2: getentropy failed with error code %d\n",
errno);
}
#else
int var;

31
error.c
View File

@ -700,10 +700,8 @@ xmlVRaiseError(xmlStructuredErrorFunc schannel,
if (code == XML_ERR_OK)
return(0);
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
if (code == XML_ERR_INTERNAL_ERROR) {
fprintf(stderr, "Unexpected error: %d\n", code);
abort();
}
if (code == XML_ERR_INTERNAL_ERROR)
xmlAbort("Unexpected error: %d\n", code);
#endif
if ((xmlGetWarningsDefaultValue == 0) && (level == XML_ERR_WARNING))
return(0);
@ -1326,3 +1324,28 @@ xmlErrString(xmlParserErrors code) {
return(errmsg);
}
void
xmlVPrintErrorMessage(const char *fmt, va_list ap) {
vfprintf(stderr, fmt, ap);
}
void
xmlPrintErrorMessage(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
xmlVPrintErrorMessage(fmt, ap);
va_end(ap);
}
void
xmlAbort(const char *fmt, ...) {
va_list ap;
va_start(ap, fmt);
xmlVPrintErrorMessage(fmt, ap);
va_end(ap);
abort();
}

6
globals.c
View File

@ -11,7 +11,6 @@
#define IN_LIBXML
#include "libxml.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -809,9 +808,8 @@ xmlNewGlobalState(int allowFailure)
* sure that global state could be allocated, it's too late to
* handle the error.
*/
fprintf(stderr, "libxml2: Failed to allocate globals for thread\n"
"libxml2: See xmlCheckThreadLocalStorage\n");
abort();
xmlAbort("libxml2: Failed to allocate globals for thread\n"
"libxml2: See xmlCheckThreadLocalStorage\n");
}
memset(gs, 0, sizeof(xmlGlobalState));

9
include/private/error.h
View File

@ -1,6 +1,8 @@
#ifndef XML_ERROR_H_PRIVATE__
#define XML_ERROR_H_PRIVATE__
#include <stdarg.h>
#include <libxml/xmlerror.h>
#include <libxml/xmlversion.h>
@ -31,4 +33,11 @@ xmlGenericErrorDefaultFunc(void *ctx, const char *msg,
XML_HIDDEN const char *
xmlErrString(xmlParserErrors code);
XML_HIDDEN void
xmlVPrintErrorMessage(const char *fmt, va_list ap);
XML_HIDDEN void
xmlPrintErrorMessage(const char *fmt, ...);
XML_HIDDEN void
xmlAbort(const char *fmt, ...);
#endif /* XML_ERROR_H_PRIVATE__ */

7
parserInternals.c
View File

@ -71,11 +71,11 @@ xmlCheckVersion(int version) {
xmlInitParser();
if ((myversion / 10000) != (version / 10000)) {
fprintf(stderr,
xmlPrintErrorMessage(
"Fatal: program compiled against libxml %d using libxml %d\n",
(version / 10000), (myversion / 10000));
} else if ((myversion / 100) < (version / 100)) {
fprintf(stderr,
xmlPrintErrorMessage(
"Warning: program compiled against libxml %d using older %d\n",
(version / 100), (myversion / 100));
}
@ -1041,8 +1041,7 @@ xmlCopyCharMultiByte(xmlChar *out, int val) {
else if (val < 0x110000) { *out++= (val >> 18) | 0xF0; bits= 12; }
else {
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
fprintf(stderr, "xmlCopyCharMultiByte: codepoint out of range\n");
abort();
xmlAbort("xmlCopyCharMultiByte: codepoint out of range\n");
#endif
return(0);
}

2
schematron.c
View File

@ -1449,7 +1449,7 @@ xmlSchematronReportOutput(xmlSchematronValidCtxtPtr ctxt ATTRIBUTE_UNUSED,
xmlNodePtr cur ATTRIBUTE_UNUSED,
const char *msg) {
/* TODO */
fprintf(stderr, "%s", msg);
xmlPrintErrorMessage("%s", msg);
}
/**

9
threads.c
View File

@ -11,6 +11,7 @@
#include "libxml.h"
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#include <libxml/threads.h>
@ -30,6 +31,7 @@
#include "private/cata.h"
#include "private/dict.h"
#include "private/enc.h"
#include "private/error.h"
#include "private/globals.h"
#include "private/io.h"
#include "private/memory.h"
@ -401,10 +403,8 @@ xmlGlobalInitMutexLock(void) {
/* Create a new critical section */
if (global_init_lock == NULL) {
cs = malloc(sizeof(CRITICAL_SECTION));
if (cs == NULL) {
fprintf(stderr, "libxml2: xmlInitParser: out of memory\n");
abort();
}
if (cs == NULL)
xmlAbort("libxml2: xmlInitParser: out of memory\n");
InitializeCriticalSection(cs);
/* Swap it into the global_init_lock */
@ -576,4 +576,3 @@ xmlDestructor(void) {
xmlCleanupParser();
}
#endif

7
xmlmemory.c
View File

@ -17,6 +17,7 @@
#include <libxml/parser.h>
#include <libxml/threads.h>
#include "private/error.h"
#include "private/memory.h"
#include "private/threads.h"
@ -162,7 +163,7 @@ xmlMemRealloc(void *ptr, size_t size) {
p = CLIENT_2_HDR(ptr);
if (p->mh_tag != MEMTAG) {
fprintf(stderr, "xmlMemRealloc: Tag error\n");
xmlPrintErrorMessage("xmlMemRealloc: Tag error\n");
return(NULL);
}
oldSize = p->mh_size;
@ -200,13 +201,13 @@ xmlMemFree(void *ptr)
return;
if (ptr == (void *) -1) {
fprintf(stderr, "xmlMemFree: Pointer from freed area\n");
xmlPrintErrorMessage("xmlMemFree: Pointer from freed area\n");
return;
}
p = CLIENT_2_HDR(ptr);
if (p->mh_tag != MEMTAG) {
fprintf(stderr, "xmlMemFree: Tag error\n");
xmlPrintErrorMessage("xmlMemFree: Tag error\n");
return;
}
p->mh_tag = ~MEMTAG;