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-rw-r--r--libxml2/testchar.c617
1 files changed, 617 insertions, 0 deletions
diff --git a/libxml2/testchar.c b/libxml2/testchar.c
new file mode 100644
index 0000000..0d08792
--- /dev/null
+++ b/libxml2/testchar.c
@@ -0,0 +1,617 @@
+/**
+ * Test the UTF-8 decoding routines
+ *
+ * author: Daniel Veillard
+ * copy: see Copyright for the status of this software.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <libxml/parser.h>
+#include <libxml/parserInternals.h>
+
+#include "buf.h"
+
+int lastError;
+
+static void errorHandler(void *unused, xmlErrorPtr err) {
+ if ((unused == NULL) && (err != NULL) && (lastError == 0)) {
+ lastError = err->code;
+ }
+}
+
+char document1[100] = "<doc>XXXX</doc>";
+char document2[100] = "<doc foo='XXXX'/>";
+
+static void testDocumentRangeByte1(xmlParserCtxtPtr ctxt, char *document,
+ int len, char *data, int forbid1, int forbid2) {
+ int i;
+ xmlDocPtr res;
+
+ for (i = 0;i <= 0xFF;i++) {
+ lastError = 0;
+ xmlCtxtReset(ctxt);
+
+ data[0] = i;
+
+ res = xmlReadMemory(document, len, "test", NULL, 0);
+
+ if ((i == forbid1) || (i == forbid2)) {
+ if ((lastError == 0) || (res != NULL))
+ fprintf(stderr,
+ "Failed to detect invalid char for Byte 0x%02X: %c\n",
+ i, i);
+ }
+
+ else if ((i == '<') || (i == '&')) {
+ if ((lastError == 0) || (res != NULL))
+ fprintf(stderr,
+ "Failed to detect illegal char %c for Byte 0x%02X\n", i, i);
+ }
+ else if (((i < 0x20) || (i >= 0x80)) &&
+ (i != 0x9) && (i != 0xA) && (i != 0xD)) {
+ if ((lastError != XML_ERR_INVALID_CHAR) && (res != NULL))
+ fprintf(stderr,
+ "Failed to detect invalid char for Byte 0x%02X\n", i);
+ }
+ else if (res == NULL) {
+ fprintf(stderr,
+ "Failed to parse valid char for Byte 0x%02X : %c\n", i, i);
+ }
+ if (res != NULL)
+ xmlFreeDoc(res);
+ }
+}
+
+static void testDocumentRangeByte2(xmlParserCtxtPtr ctxt, char *document,
+ int len, char *data) {
+ int i, j;
+ xmlDocPtr res;
+
+ for (i = 0x80;i <= 0xFF;i++) {
+ for (j = 0;j <= 0xFF;j++) {
+ lastError = 0;
+ xmlCtxtReset(ctxt);
+
+ data[0] = i;
+ data[1] = j;
+
+ res = xmlReadMemory(document, len, "test", NULL, 0);
+
+ /* if first bit of first char is set, then second bit must too */
+ if ((i & 0x80) && ((i & 0x40) == 0)) {
+ if ((lastError == 0) || (res != NULL))
+ fprintf(stderr,
+ "Failed to detect invalid char for Bytes 0x%02X 0x%02X\n",
+ i, j);
+ }
+
+ /*
+ * if first bit of first char is set, then second char first
+ * bits must be 10
+ */
+ else if ((i & 0x80) && ((j & 0xC0) != 0x80)) {
+ if ((lastError == 0) || (res != NULL))
+ fprintf(stderr,
+ "Failed to detect invalid char for Bytes 0x%02X 0x%02X\n",
+ i, j);
+ }
+
+ /*
+ * if using a 2 byte encoding then the value must be greater
+ * than 0x80, i.e. one of bits 5 to 1 of i must be set
+ */
+ else if ((i & 0x80) && ((i & 0x1E) == 0)) {
+ if ((lastError == 0) || (res != NULL))
+ fprintf(stderr,
+ "Failed to detect invalid char for Bytes 0x%02X 0x%02X\n",
+ i, j);
+ }
+
+ /*
+ * if third bit of first char is set, then the sequence would need
+ * at least 3 bytes, but we give only 2 !
+ */
+ else if ((i & 0xE0) == 0xE0) {
+ if ((lastError == 0) || (res != NULL))
+ fprintf(stderr,
+ "Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x00\n",
+ i, j);
+ }
+
+ /*
+ * We should see no error in remaning cases
+ */
+ else if ((lastError != 0) || (res == NULL)) {
+ fprintf(stderr,
+ "Failed to parse document for Bytes 0x%02X 0x%02X\n", i, j);
+ }
+ if (res != NULL)
+ xmlFreeDoc(res);
+ }
+ }
+}
+
+/**
+ * testDocumentRanges:
+ *
+ * Test the correct UTF8 character parsing in context of XML documents
+ * Those are in-context injection tests checking the parser behaviour on
+ * edge case values at different point in content, beginning and end of
+ * CDATA in text or in attribute values.
+ */
+
+static void testDocumentRanges(void) {
+ xmlParserCtxtPtr ctxt;
+ char *data;
+
+ /*
+ * Set up a parsing context using the first document as
+ * the current input source.
+ */
+ ctxt = xmlNewParserCtxt();
+ if (ctxt == NULL) {
+ fprintf(stderr, "Failed to allocate parser context\n");
+ return;
+ }
+
+ printf("testing 1 byte char in document: 1");
+ fflush(stdout);
+ data = &document1[5];
+ data[0] = ' ';
+ data[1] = ' ';
+ data[2] = ' ';
+ data[3] = ' ';
+ /* test 1 byte injection at beginning of area */
+ testDocumentRangeByte1(ctxt, &document1[0], strlen(document1),
+ data, -1, -1);
+ printf(" 2");
+ fflush(stdout);
+ data[0] = ' ';
+ data[1] = ' ';
+ data[2] = ' ';
+ data[3] = ' ';
+ /* test 1 byte injection at end of area */
+ testDocumentRangeByte1(ctxt, &document1[0], strlen(document1),
+ data + 3, -1, -1);
+
+ printf(" 3");
+ fflush(stdout);
+ data = &document2[10];
+ data[0] = ' ';
+ data[1] = ' ';
+ data[2] = ' ';
+ data[3] = ' ';
+ /* test 1 byte injection at beginning of area */
+ testDocumentRangeByte1(ctxt, &document2[0], strlen(document2),
+ data, '\'', -1);
+ printf(" 4");
+ fflush(stdout);
+ data[0] = ' ';
+ data[1] = ' ';
+ data[2] = ' ';
+ data[3] = ' ';
+ /* test 1 byte injection at end of area */
+ testDocumentRangeByte1(ctxt, &document2[0], strlen(document2),
+ data + 3, '\'', -1);
+ printf(" done\n");
+
+ printf("testing 2 byte char in document: 1");
+ fflush(stdout);
+ data = &document1[5];
+ data[0] = ' ';
+ data[1] = ' ';
+ data[2] = ' ';
+ data[3] = ' ';
+ /* test 2 byte injection at beginning of area */
+ testDocumentRangeByte2(ctxt, &document1[0], strlen(document1),
+ data);
+ printf(" 2");
+ fflush(stdout);
+ data[0] = ' ';
+ data[1] = ' ';
+ data[2] = ' ';
+ data[3] = ' ';
+ /* test 2 byte injection at end of area */
+ testDocumentRangeByte2(ctxt, &document1[0], strlen(document1),
+ data + 2);
+
+ printf(" 3");
+ fflush(stdout);
+ data = &document2[10];
+ data[0] = ' ';
+ data[1] = ' ';
+ data[2] = ' ';
+ data[3] = ' ';
+ /* test 2 byte injection at beginning of area */
+ testDocumentRangeByte2(ctxt, &document2[0], strlen(document2),
+ data);
+ printf(" 4");
+ fflush(stdout);
+ data[0] = ' ';
+ data[1] = ' ';
+ data[2] = ' ';
+ data[3] = ' ';
+ /* test 2 byte injection at end of area */
+ testDocumentRangeByte2(ctxt, &document2[0], strlen(document2),
+ data + 2);
+ printf(" done\n");
+
+ xmlFreeParserCtxt(ctxt);
+}
+
+static void testCharRangeByte1(xmlParserCtxtPtr ctxt, char *data) {
+ int i = 0;
+ int len, c;
+
+ data[1] = 0;
+ data[2] = 0;
+ data[3] = 0;
+ for (i = 0;i <= 0xFF;i++) {
+ data[0] = i;
+ ctxt->charset = XML_CHAR_ENCODING_UTF8;
+
+ lastError = 0;
+ c = xmlCurrentChar(ctxt, &len);
+ if ((i == 0) || (i >= 0x80)) {
+ /* we must see an error there */
+ if (lastError != XML_ERR_INVALID_CHAR)
+ fprintf(stderr,
+ "Failed to detect invalid char for Byte 0x%02X\n", i);
+ } else if (i == 0xD) {
+ if ((c != 0xA) || (len != 1))
+ fprintf(stderr, "Failed to convert char for Byte 0x%02X\n", i);
+ } else if ((c != i) || (len != 1)) {
+ fprintf(stderr, "Failed to parse char for Byte 0x%02X\n", i);
+ }
+ }
+}
+
+static void testCharRangeByte2(xmlParserCtxtPtr ctxt, char *data) {
+ int i, j;
+ int len, c;
+
+ data[2] = 0;
+ data[3] = 0;
+ for (i = 0x80;i <= 0xFF;i++) {
+ for (j = 0;j <= 0xFF;j++) {
+ data[0] = i;
+ data[1] = j;
+ ctxt->charset = XML_CHAR_ENCODING_UTF8;
+
+ lastError = 0;
+ c = xmlCurrentChar(ctxt, &len);
+
+ /* if first bit of first char is set, then second bit must too */
+ if ((i & 0x80) && ((i & 0x40) == 0)) {
+ if (lastError != XML_ERR_INVALID_CHAR)
+ fprintf(stderr,
+ "Failed to detect invalid char for Bytes 0x%02X 0x%02X\n",
+ i, j);
+ }
+
+ /*
+ * if first bit of first char is set, then second char first
+ * bits must be 10
+ */
+ else if ((i & 0x80) && ((j & 0xC0) != 0x80)) {
+ if (lastError != XML_ERR_INVALID_CHAR)
+ fprintf(stderr,
+ "Failed to detect invalid char for Bytes 0x%02X 0x%02X: %d\n",
+ i, j, c);
+ }
+
+ /*
+ * if using a 2 byte encoding then the value must be greater
+ * than 0x80, i.e. one of bits 5 to 1 of i must be set
+ */
+ else if ((i & 0x80) && ((i & 0x1E) == 0)) {
+ if (lastError != XML_ERR_INVALID_CHAR)
+ fprintf(stderr,
+ "Failed to detect invalid char for Bytes 0x%02X 0x%02X: %d\n",
+ i, j, c);
+ }
+
+ /*
+ * if third bit of first char is set, then the sequence would need
+ * at least 3 bytes, but we give only 2 !
+ */
+ else if ((i & 0xE0) == 0xE0) {
+ if (lastError != XML_ERR_INVALID_CHAR)
+ fprintf(stderr,
+ "Failed to detect invalid char for Bytes 0x%02X 0x%02X 0x00\n",
+ i, j);
+ }
+
+ /*
+ * We should see no error in remaning cases
+ */
+ else if ((lastError != 0) || (len != 2)) {
+ fprintf(stderr,
+ "Failed to parse char for Bytes 0x%02X 0x%02X\n", i, j);
+ }
+
+ /*
+ * Finally check the value is right
+ */
+ else if (c != (j & 0x3F) + ((i & 0x1F) << 6)) {
+ fprintf(stderr,
+ "Failed to parse char for Bytes 0x%02X 0x%02X: expect %d got %d\n",
+ i, j, ((j & 0x3F) + ((i & 0x1F) << 6)), c);
+ }
+ }
+ }
+}
+
+static void testCharRangeByte3(xmlParserCtxtPtr ctxt, char *data) {
+ int i, j, k, K;
+ int len, c;
+ unsigned char lows[6] = {0, 0x80, 0x81, 0xC1, 0xFF, 0xBF};
+ int value;
+
+ data[3] = 0;
+ for (i = 0xE0;i <= 0xFF;i++) {
+ for (j = 0;j <= 0xFF;j++) {
+ for (k = 0;k < 6;k++) {
+ data[0] = i;
+ data[1] = j;
+ K = lows[k];
+ data[2] = (char) K;
+ value = (K & 0x3F) + ((j & 0x3F) << 6) + ((i & 0xF) << 12);
+ ctxt->charset = XML_CHAR_ENCODING_UTF8;
+
+ lastError = 0;
+ c = xmlCurrentChar(ctxt, &len);
+
+ /*
+ * if fourth bit of first char is set, then the sequence would need
+ * at least 4 bytes, but we give only 3 !
+ */
+ if ((i & 0xF0) == 0xF0) {
+ 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 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);
+}
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