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/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
* applicable.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr.h"
#include "apr_general.h"
#include "apr_xml.h"
#if APR_HAVE_STDLIB_H
#include <stdlib.h> /* for exit() */
#endif
static const char *progname;
static const char *usage = "%s [xmlfile]\nIt will create "
"a dummy XML file if none is supplied";
/*
* If our platform knows about the tmpnam() external buffer size, create
* a buffer to pass in. This is needed in a threaded environment, or
* one that thinks it is (like HP-UX).
*/
#ifdef L_tmpnam
static char tname_buf[L_tmpnam];
#else
static char *tname_buf = NULL;
#endif
static apr_status_t create_dummy_file_error(apr_pool_t *p, apr_file_t **fd)
{
apr_status_t rv;
char *tmpfile;
int i;
apr_off_t off = 0L;
tmpfile = tmpnam(tname_buf);
if ((tmpfile == NULL) || (*tmpfile == '\0')) {
fprintf(stderr, "unable to generate temporary filename\n");
if (errno == 0) {
errno = ENOENT;
}
perror("tmpnam");
return APR_ENOENT;
}
rv = apr_file_open(fd, tmpfile, APR_CREATE|APR_TRUNCATE|APR_DELONCLOSE|
APR_READ|APR_WRITE|APR_EXCL, APR_OS_DEFAULT, p);
if (rv != APR_SUCCESS)
return rv;
rv = apr_file_puts("<?xml version=\"1.0\" ?>\n<maryx>"
"<had a=\"little\"/><lamb its='fleece "
"was white as snow' />\n", *fd);
if (rv != APR_SUCCESS)
return rv;
for (i = 0; i < 5000; i++) {
rv = apr_file_puts("<hmm roast=\"lamb\" "
"for=\"dinner\">yummy</hmm>\n", *fd);
if (rv != APR_SUCCESS)
return rv;
}
rv = apr_file_puts("</mary>\n", *fd);
if (rv != APR_SUCCESS)
return rv;
return apr_file_seek(*fd, APR_SET, &off);
}
static apr_status_t create_dummy_file(apr_pool_t *p, apr_file_t **fd)
{
apr_status_t rv;
char *tmpfile;
int i;
apr_off_t off = 0L;
tmpfile = tmpnam(tname_buf);
if ((tmpfile == NULL) || (*tmpfile == '\0')) {
fprintf(stderr, "unable to generate temporary filename\n");
if (errno == 0) {
errno = ENOENT;
}
perror("tmpnam");
return APR_ENOENT;
}
rv = apr_file_open(fd, tmpfile, APR_CREATE|APR_TRUNCATE|APR_DELONCLOSE|
APR_READ|APR_WRITE|APR_EXCL, APR_OS_DEFAULT, p);
if (rv != APR_SUCCESS)
return rv;
rv = apr_file_puts("<?xml version=\"1.0\" ?>\n<mary>"
"<had a=\"little\"/><lamb its='fleece "
"was white as snow' />\n", *fd);
if (rv != APR_SUCCESS)
return rv;
for (i = 0; i < 5000; i++) {
rv = apr_file_puts("<hmm roast=\"lamb\" "
"for=\"dinner\">yummy</hmm>\n", *fd);
if (rv != APR_SUCCESS)
return rv;
}
rv = apr_file_puts("</mary>\n", *fd);
if (rv != APR_SUCCESS)
return rv;
rv = apr_file_seek(*fd, APR_SET, &off);
return rv;
}
static void dump_xml(apr_xml_elem *e, int level)
{
apr_xml_attr *a;
apr_xml_elem *ec;
printf("%d: element %s\n", level, e->name);
if (e->attr) {
a = e->attr;
printf("%d:\tattrs\t", level);
while (a) {
printf("%s=%s\t", a->name, a->value);
a = a->next;
}
printf("\n");
}
if (e->first_child) {
ec = e->first_child;
while (ec) {
dump_xml(ec, level + 1);
ec = ec->next;
}
}
}
static void oops(const char *s1, const char *s2, apr_status_t rv)
{
if (progname)
fprintf(stderr, "%s: ", progname);
fprintf(stderr, s1, s2);
if (rv != APR_SUCCESS) {
char buf[120];
fprintf(stderr, " (%s)", apr_strerror(rv, buf, sizeof buf));
}
fprintf(stderr, "\n");
exit(1);
}
static int test_xml_parser(apr_pool_t *pool, const char *file)
{
apr_file_t *fd;
apr_xml_parser *parser;
apr_xml_doc *doc;
apr_status_t rv;
char errbuf[2000];
char errbufXML[2000];
if (file == NULL) {
rv = create_dummy_file(pool, &fd);
if (rv != APR_SUCCESS) {
oops("cannot create dummy file", "oops", rv);
}
}
else {
rv = apr_file_open(&fd, file, APR_READ, APR_OS_DEFAULT, pool);
if (rv != APR_SUCCESS) {
oops("cannot open: %s", file, rv);
}
}
rv = apr_xml_parse_file(pool, &parser, &doc, fd, 2000);
if (rv != APR_SUCCESS) {
fprintf(stderr, "APR Error %s\nXML Error: %s\n",
apr_strerror(rv, errbuf, sizeof(errbuf)),
apr_xml_parser_geterror(parser, errbufXML, sizeof(errbufXML)));
return rv;
}
dump_xml(doc->root, 0);
rv = apr_file_close(fd);
if (file == NULL) {
rv = create_dummy_file_error(pool, &fd);
if (rv != APR_SUCCESS) {
oops("cannot create error dummy file", "oops", rv);
}
rv = apr_xml_parse_file(pool, &parser, &doc, fd, 2000);
if (rv != APR_SUCCESS) {
fprintf(stdout, "APR Error %s\nXML Error: %s "
"(EXPECTED) This is good.\n",
apr_strerror(rv, errbuf, sizeof(errbuf)),
apr_xml_parser_geterror(parser, errbufXML, sizeof(errbufXML)));
rv = APR_SUCCESS; /* reset the return code, as the test is supposed to get this error */
}
else {
fprintf(stderr, "Expected an error, but didn't get one ;( ");
return APR_EGENERAL;
}
}
return rv;
}
static void test_billion_laughs(apr_pool_t *pool)
{
apr_file_t *fd;
apr_xml_parser *parser;
apr_xml_doc *doc;
apr_status_t rv;
char errbuf[2000];
rv = apr_file_open(&fd, "data/billion-laughs.xml",
APR_READ, 0, pool);
if (rv != APR_SUCCESS) {
fprintf(stderr, "APR Error %s\n",
apr_strerror(rv, errbuf, sizeof(errbuf)));
}
/* Don't test for return value; if it returns, chances are the bug
* is fixed or the machine has insane amounts of RAM. */
apr_xml_parse_file(pool, &parser, &doc, fd, 2000);
apr_file_close(fd);
}
static void test_CVE_2009_3720_alpha(apr_pool_t *pool)
{
apr_xml_parser *xp;
apr_xml_doc *doc;
apr_status_t rv;
xp = apr_xml_parser_create(pool);
rv = apr_xml_parser_feed(xp, "\0\r\n", 3);
if (rv == APR_SUCCESS)
apr_xml_parser_done(xp, &doc);
}
static void test_CVE_2009_3720_beta(apr_pool_t *pool)
{
apr_xml_parser *xp;
apr_xml_doc *doc;
apr_status_t rv;
xp = apr_xml_parser_create(pool);
rv = apr_xml_parser_feed(xp, "<?xml version\xc2\x85='1.0'?>\r\n", 25);
if (rv == APR_SUCCESS)
apr_xml_parser_done(xp, &doc);
}
int main(int argc, const char *const * argv)
{
apr_pool_t *pool;
apr_status_t rv;
(void) apr_initialize();
apr_pool_create(&pool, NULL);
progname = argv[0];
if (argc == 1) {
rv = test_xml_parser(pool, NULL);
}
else {
if (argc == 2) {
rv = test_xml_parser(pool, argv[1]);
}
else {
oops("usage: %s", usage, 0);
}
}
test_billion_laughs(pool);
test_CVE_2009_3720_alpha(pool);
test_CVE_2009_3720_beta(pool);
apr_pool_destroy(pool);
apr_terminate();
return rv;
}
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