618 lines
16 KiB
C
618 lines
16 KiB
C
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/**
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* Test the UTF-8 decoding routines
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*
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* author: Daniel Veillard
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* copy: see Copyright for the status of this software.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <libxml/parser.h>
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#include <libxml/parserInternals.h>
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#include "buf.h"
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int lastError;
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static void errorHandler(void *unused, xmlErrorPtr err) {
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if ((unused == NULL) && (err != NULL) && (lastError == 0)) {
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lastError = err->code;
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}
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}
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char document1[100] = "<doc>XXXX</doc>";
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char document2[100] = "<doc foo='XXXX'/>";
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static void testDocumentRangeByte1(xmlParserCtxtPtr ctxt, char *document,
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int len, char *data, int forbid1, int forbid2) {
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int i;
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xmlDocPtr res;
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for (i = 0;i <= 0xFF;i++) {
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lastError = 0;
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xmlCtxtReset(ctxt);
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data[0] = i;
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res = xmlReadMemory(document, len, "test", NULL, 0);
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if ((i == forbid1) || (i == forbid2)) {
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if ((lastError == 0) || (res != NULL))
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fprintf(stderr,
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"Failed to detect invalid char for Byte 0x%02X: %c\n",
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i, i);
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}
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else if ((i == '<') || (i == '&')) {
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if ((lastError == 0) || (res != NULL))
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fprintf(stderr,
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"Failed to detect illegal char %c for Byte 0x%02X\n", i, i);
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}
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else if (((i < 0x20) || (i >= 0x80)) &&
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(i != 0x9) && (i != 0xA) && (i != 0xD)) {
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if ((lastError != XML_ERR_INVALID_CHAR) && (res != NULL))
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fprintf(stderr,
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"Failed to detect invalid char for Byte 0x%02X\n", i);
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}
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else if (res == NULL) {
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fprintf(stderr,
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"Failed to parse valid char for Byte 0x%02X : %c\n", i, i);
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}
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if (res != NULL)
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xmlFreeDoc(res);
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}
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}
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static void testDocumentRangeByte2(xmlParserCtxtPtr ctxt, char *document,
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int len, char *data) {
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int i, j;
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xmlDocPtr res;
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for (i = 0x80;i <= 0xFF;i++) {
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for (j = 0;j <= 0xFF;j++) {
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lastError = 0;
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xmlCtxtReset(ctxt);
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data[0] = i;
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data[1] = j;
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res = xmlReadMemory(document, len, "test", NULL, 0);
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/* if first bit of first char is set, then second bit must too */
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if ((i & 0x80) && ((i & 0x40) == 0)) {
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if ((lastError == 0) || (res != NULL))
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fprintf(stderr,
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"Failed to detect invalid char for Bytes 0x%02X 0x%02X\n",
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i, j);
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}
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/*
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* if first bit of first char is set, then second char first
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* bits must be 10
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*/
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else if ((i & 0x80) && ((j & 0xC0) != 0x80)) {
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if ((lastError == 0) || (res != NULL))
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fprintf(stderr,
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"Failed to detect invalid char for Bytes 0x%02X 0x%02X\n",
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i, j);
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}
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/*
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* if using a 2 byte encoding then the value must be greater
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* than 0x80, i.e. one of bits 5 to 1 of i must be set
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*/
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else if ((i & 0x80) && ((i & 0x1E) == 0)) {
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if ((lastError == 0) || (res != NULL))
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fprintf(stderr,
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"Failed to detect invalid char for Bytes 0x%02X 0x%02X\n",
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i, j);
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}
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/*
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* if third bit of first char is set, then the sequence would need
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* at least 3 bytes, but we give only 2 !
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*/
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else if ((i & 0xE0) == 0xE0) {
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if ((lastError == 0) || (res != NULL))
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fprintf(stderr,
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"Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x00\n",
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i, j);
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}
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/*
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* We should see no error in remaning cases
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*/
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else if ((lastError != 0) || (res == NULL)) {
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fprintf(stderr,
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"Failed to parse document for Bytes 0x%02X 0x%02X\n", i, j);
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}
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if (res != NULL)
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xmlFreeDoc(res);
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}
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}
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}
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/**
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* testDocumentRanges:
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*
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* Test the correct UTF8 character parsing in context of XML documents
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* Those are in-context injection tests checking the parser behaviour on
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* edge case values at different point in content, beginning and end of
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* CDATA in text or in attribute values.
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*/
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static void testDocumentRanges(void) {
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xmlParserCtxtPtr ctxt;
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char *data;
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/*
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* Set up a parsing context using the first document as
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* the current input source.
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*/
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ctxt = xmlNewParserCtxt();
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if (ctxt == NULL) {
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fprintf(stderr, "Failed to allocate parser context\n");
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return;
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}
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printf("testing 1 byte char in document: 1");
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fflush(stdout);
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data = &document1[5];
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data[0] = ' ';
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data[1] = ' ';
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data[2] = ' ';
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data[3] = ' ';
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/* test 1 byte injection at beginning of area */
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testDocumentRangeByte1(ctxt, &document1[0], strlen(document1),
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data, -1, -1);
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printf(" 2");
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fflush(stdout);
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data[0] = ' ';
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data[1] = ' ';
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data[2] = ' ';
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data[3] = ' ';
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/* test 1 byte injection at end of area */
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testDocumentRangeByte1(ctxt, &document1[0], strlen(document1),
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data + 3, -1, -1);
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printf(" 3");
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fflush(stdout);
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data = &document2[10];
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data[0] = ' ';
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data[1] = ' ';
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data[2] = ' ';
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data[3] = ' ';
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/* test 1 byte injection at beginning of area */
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testDocumentRangeByte1(ctxt, &document2[0], strlen(document2),
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data, '\'', -1);
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printf(" 4");
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fflush(stdout);
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data[0] = ' ';
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data[1] = ' ';
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data[2] = ' ';
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data[3] = ' ';
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/* test 1 byte injection at end of area */
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testDocumentRangeByte1(ctxt, &document2[0], strlen(document2),
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data + 3, '\'', -1);
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printf(" done\n");
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printf("testing 2 byte char in document: 1");
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fflush(stdout);
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data = &document1[5];
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data[0] = ' ';
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data[1] = ' ';
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data[2] = ' ';
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data[3] = ' ';
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/* test 2 byte injection at beginning of area */
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testDocumentRangeByte2(ctxt, &document1[0], strlen(document1),
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data);
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printf(" 2");
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fflush(stdout);
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data[0] = ' ';
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data[1] = ' ';
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data[2] = ' ';
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data[3] = ' ';
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/* test 2 byte injection at end of area */
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testDocumentRangeByte2(ctxt, &document1[0], strlen(document1),
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data + 2);
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printf(" 3");
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fflush(stdout);
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data = &document2[10];
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data[0] = ' ';
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data[1] = ' ';
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data[2] = ' ';
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data[3] = ' ';
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/* test 2 byte injection at beginning of area */
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testDocumentRangeByte2(ctxt, &document2[0], strlen(document2),
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data);
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printf(" 4");
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fflush(stdout);
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data[0] = ' ';
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data[1] = ' ';
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data[2] = ' ';
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data[3] = ' ';
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/* test 2 byte injection at end of area */
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testDocumentRangeByte2(ctxt, &document2[0], strlen(document2),
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data + 2);
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printf(" done\n");
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xmlFreeParserCtxt(ctxt);
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}
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static void testCharRangeByte1(xmlParserCtxtPtr ctxt, char *data) {
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int i = 0;
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int len, c;
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data[1] = 0;
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data[2] = 0;
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data[3] = 0;
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for (i = 0;i <= 0xFF;i++) {
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data[0] = i;
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ctxt->charset = XML_CHAR_ENCODING_UTF8;
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lastError = 0;
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c = xmlCurrentChar(ctxt, &len);
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if ((i == 0) || (i >= 0x80)) {
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/* we must see an error there */
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if (lastError != XML_ERR_INVALID_CHAR)
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fprintf(stderr,
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"Failed to detect invalid char for Byte 0x%02X\n", i);
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} else if (i == 0xD) {
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if ((c != 0xA) || (len != 1))
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fprintf(stderr, "Failed to convert char for Byte 0x%02X\n", i);
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} else if ((c != i) || (len != 1)) {
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fprintf(stderr, "Failed to parse char for Byte 0x%02X\n", i);
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}
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}
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}
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static void testCharRangeByte2(xmlParserCtxtPtr ctxt, char *data) {
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int i, j;
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int len, c;
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data[2] = 0;
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data[3] = 0;
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for (i = 0x80;i <= 0xFF;i++) {
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for (j = 0;j <= 0xFF;j++) {
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data[0] = i;
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data[1] = j;
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ctxt->charset = XML_CHAR_ENCODING_UTF8;
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lastError = 0;
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c = xmlCurrentChar(ctxt, &len);
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/* if first bit of first char is set, then second bit must too */
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if ((i & 0x80) && ((i & 0x40) == 0)) {
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if (lastError != XML_ERR_INVALID_CHAR)
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fprintf(stderr,
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"Failed to detect invalid char for Bytes 0x%02X 0x%02X\n",
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i, j);
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}
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/*
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* if first bit of first char is set, then second char first
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* bits must be 10
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*/
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else if ((i & 0x80) && ((j & 0xC0) != 0x80)) {
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if (lastError != XML_ERR_INVALID_CHAR)
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fprintf(stderr,
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"Failed to detect invalid char for Bytes 0x%02X 0x%02X: %d\n",
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i, j, c);
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}
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/*
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* if using a 2 byte encoding then the value must be greater
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* than 0x80, i.e. one of bits 5 to 1 of i must be set
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*/
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else if ((i & 0x80) && ((i & 0x1E) == 0)) {
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if (lastError != XML_ERR_INVALID_CHAR)
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fprintf(stderr,
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"Failed to detect invalid char for Bytes 0x%02X 0x%02X: %d\n",
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i, j, c);
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}
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/*
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* if third bit of first char is set, then the sequence would need
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* at least 3 bytes, but we give only 2 !
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*/
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else if ((i & 0xE0) == 0xE0) {
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if (lastError != XML_ERR_INVALID_CHAR)
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fprintf(stderr,
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"Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x00\n",
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i, j);
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}
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/*
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* We should see no error in remaning cases
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*/
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else if ((lastError != 0) || (len != 2)) {
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fprintf(stderr,
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"Failed to parse char for Bytes 0x%02X 0x%02X\n", i, j);
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}
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/*
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* Finally check the value is right
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*/
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else if (c != (j & 0x3F) + ((i & 0x1F) << 6)) {
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fprintf(stderr,
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"Failed to parse char for Bytes 0x%02X 0x%02X: expect %d got %d\n",
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i, j, ((j & 0x3F) + ((i & 0x1F) << 6)), c);
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}
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}
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}
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}
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static void testCharRangeByte3(xmlParserCtxtPtr ctxt, char *data) {
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int i, j, k, K;
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int len, c;
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unsigned char lows[6] = {0, 0x80, 0x81, 0xC1, 0xFF, 0xBF};
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int value;
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data[3] = 0;
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for (i = 0xE0;i <= 0xFF;i++) {
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for (j = 0;j <= 0xFF;j++) {
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for (k = 0;k < 6;k++) {
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data[0] = i;
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data[1] = j;
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K = lows[k];
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data[2] = (char) K;
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value = (K & 0x3F) + ((j & 0x3F) << 6) + ((i & 0xF) << 12);
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ctxt->charset = XML_CHAR_ENCODING_UTF8;
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lastError = 0;
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c = xmlCurrentChar(ctxt, &len);
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/*
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* if fourth bit of first char is set, then the sequence would need
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* at least 4 bytes, but we give only 3 !
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*/
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if ((i & 0xF0) == 0xF0) {
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if (lastError != XML_ERR_INVALID_CHAR)
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fprintf(stderr,
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||
|
|
"Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
i, j, K, data[3]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The second and the third bytes must start with 10
|
||
|
|
*/
|
||
|
|
else if (((j & 0xC0) != 0x80) || ((K & 0xC0) != 0x80)) {
|
||
|
|
if (lastError != XML_ERR_INVALID_CHAR)
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
i, j, K);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* if using a 3 byte encoding then the value must be greater
|
||
|
|
* than 0x800, i.e. one of bits 4 to 0 of i must be set or
|
||
|
|
* the 6th byte of data[1] must be set
|
||
|
|
*/
|
||
|
|
else if (((i & 0xF) == 0) && ((j & 0x20) == 0)) {
|
||
|
|
if (lastError != XML_ERR_INVALID_CHAR)
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
i, j, K);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* There are values in that range that are not allowed in XML-1.0
|
||
|
|
*/
|
||
|
|
else if (((value > 0xD7FF) && (value <0xE000)) ||
|
||
|
|
((value > 0xFFFD) && (value <0x10000))) {
|
||
|
|
if (lastError != XML_ERR_INVALID_CHAR)
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to detect invalid char 0x%04X for Bytes 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
value, i, j, K);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* We should see no error in remaining cases
|
||
|
|
*/
|
||
|
|
else if ((lastError != 0) || (len != 3)) {
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to parse char for Bytes 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
i, j, K);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Finally check the value is right
|
||
|
|
*/
|
||
|
|
else if (c != value) {
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to parse char for Bytes 0x%02X 0x%02X 0x%02X: expect %d got %d\n",
|
||
|
|
i, j, data[2], value, c);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void testCharRangeByte4(xmlParserCtxtPtr ctxt, char *data) {
|
||
|
|
int i, j, k, K, l, L;
|
||
|
|
int len, c;
|
||
|
|
unsigned char lows[6] = {0, 0x80, 0x81, 0xC1, 0xFF, 0xBF};
|
||
|
|
int value;
|
||
|
|
|
||
|
|
data[4] = 0;
|
||
|
|
for (i = 0xF0;i <= 0xFF;i++) {
|
||
|
|
for (j = 0;j <= 0xFF;j++) {
|
||
|
|
for (k = 0;k < 6;k++) {
|
||
|
|
for (l = 0;l < 6;l++) {
|
||
|
|
data[0] = i;
|
||
|
|
data[1] = j;
|
||
|
|
K = lows[k];
|
||
|
|
data[2] = (char) K;
|
||
|
|
L = lows[l];
|
||
|
|
data[3] = (char) L;
|
||
|
|
value = (L & 0x3F) + ((K & 0x3F) << 6) + ((j & 0x3F) << 12) +
|
||
|
|
((i & 0x7) << 18);
|
||
|
|
ctxt->charset = XML_CHAR_ENCODING_UTF8;
|
||
|
|
|
||
|
|
lastError = 0;
|
||
|
|
c = xmlCurrentChar(ctxt, &len);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* if fifth bit of first char is set, then the sequence would need
|
||
|
|
* at least 5 bytes, but we give only 4 !
|
||
|
|
*/
|
||
|
|
if ((i & 0xF8) == 0xF8) {
|
||
|
|
if (lastError != XML_ERR_INVALID_CHAR)
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
i, j, K, data[3]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The second, third and fourth bytes must start with 10
|
||
|
|
*/
|
||
|
|
else if (((j & 0xC0) != 0x80) || ((K & 0xC0) != 0x80) ||
|
||
|
|
((L & 0xC0) != 0x80)) {
|
||
|
|
if (lastError != XML_ERR_INVALID_CHAR)
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
i, j, K, L);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* if using a 3 byte encoding then the value must be greater
|
||
|
|
* than 0x10000, i.e. one of bits 3 to 0 of i must be set or
|
||
|
|
* the 6 or 5th byte of j must be set
|
||
|
|
*/
|
||
|
|
else if (((i & 0x7) == 0) && ((j & 0x30) == 0)) {
|
||
|
|
if (lastError != XML_ERR_INVALID_CHAR)
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
i, j, K, L);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* There are values in that range that are not allowed in XML-1.0
|
||
|
|
*/
|
||
|
|
else if (((value > 0xD7FF) && (value <0xE000)) ||
|
||
|
|
((value > 0xFFFD) && (value <0x10000)) ||
|
||
|
|
(value > 0x10FFFF)) {
|
||
|
|
if (lastError != XML_ERR_INVALID_CHAR)
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to detect invalid char 0x%04X for Bytes 0x%02X 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
value, i, j, K, L);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* We should see no error in remaining cases
|
||
|
|
*/
|
||
|
|
else if ((lastError != 0) || (len != 4)) {
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to parse char for Bytes 0x%02X 0x%02X 0x%02X\n",
|
||
|
|
i, j, K);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Finally check the value is right
|
||
|
|
*/
|
||
|
|
else if (c != value) {
|
||
|
|
fprintf(stderr,
|
||
|
|
"Failed to parse char for Bytes 0x%02X 0x%02X 0x%02X: expect %d got %d\n",
|
||
|
|
i, j, data[2], value, c);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* testCharRanges:
|
||
|
|
*
|
||
|
|
* Test the correct UTF8 character parsing in isolation i.e.
|
||
|
|
* not when parsing a full document, this is less expensive and we can
|
||
|
|
* cover the full range of UTF-8 chars accepted by XML-1.0
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void testCharRanges(void) {
|
||
|
|
char data[5];
|
||
|
|
xmlParserCtxtPtr ctxt;
|
||
|
|
xmlParserInputBufferPtr buf;
|
||
|
|
xmlParserInputPtr input;
|
||
|
|
|
||
|
|
memset(data, 0, 5);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set up a parsing context using the above data buffer as
|
||
|
|
* the current input source.
|
||
|
|
*/
|
||
|
|
ctxt = xmlNewParserCtxt();
|
||
|
|
if (ctxt == NULL) {
|
||
|
|
fprintf(stderr, "Failed to allocate parser context\n");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
buf = xmlParserInputBufferCreateStatic(data, sizeof(data),
|
||
|
|
XML_CHAR_ENCODING_NONE);
|
||
|
|
if (buf == NULL) {
|
||
|
|
fprintf(stderr, "Failed to allocate input buffer\n");
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
input = xmlNewInputStream(ctxt);
|
||
|
|
if (input == NULL) {
|
||
|
|
xmlFreeParserInputBuffer(buf);
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
input->filename = NULL;
|
||
|
|
input->buf = buf;
|
||
|
|
input->cur =
|
||
|
|
input->base = xmlBufContent(input->buf->buffer);
|
||
|
|
input->end = input->base + 4;
|
||
|
|
inputPush(ctxt, input);
|
||
|
|
|
||
|
|
printf("testing char range: 1");
|
||
|
|
fflush(stdout);
|
||
|
|
testCharRangeByte1(ctxt, data);
|
||
|
|
printf(" 2");
|
||
|
|
fflush(stdout);
|
||
|
|
testCharRangeByte2(ctxt, data);
|
||
|
|
printf(" 3");
|
||
|
|
fflush(stdout);
|
||
|
|
testCharRangeByte3(ctxt, data);
|
||
|
|
printf(" 4");
|
||
|
|
fflush(stdout);
|
||
|
|
testCharRangeByte4(ctxt, data);
|
||
|
|
printf(" done\n");
|
||
|
|
fflush(stdout);
|
||
|
|
|
||
|
|
error:
|
||
|
|
xmlFreeParserCtxt(ctxt);
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(void) {
|
||
|
|
|
||
|
|
/*
|
||
|
|
* this initialize the library and check potential ABI mismatches
|
||
|
|
* between the version it was compiled for and the actual shared
|
||
|
|
* library used.
|
||
|
|
*/
|
||
|
|
LIBXML_TEST_VERSION
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Catch errors separately
|
||
|
|
*/
|
||
|
|
|
||
|
|
xmlSetStructuredErrorFunc(NULL, errorHandler);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Run the tests
|
||
|
|
*/
|
||
|
|
testCharRanges();
|
||
|
|
testDocumentRanges();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Cleanup function for the XML library.
|
||
|
|
*/
|
||
|
|
xmlCleanupParser();
|
||
|
|
/*
|
||
|
|
* this is to debug memory for regression tests
|
||
|
|
*/
|
||
|
|
xmlMemoryDump();
|
||
|
|
return(0);
|
||
|
|
}
|