lighttpd 1.4.x https://www.lighttpd.net/
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lighttpd1.4/src/t/test_mod_alias.c

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4.9 KiB

#include "first.h"
#undef NDEBUG
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "mod_alias.c"
static void test_mod_alias_check(void) {
request_st r;
memset(&r, 0, sizeof(request_st));
array * const aliases = array_init(3);
/*(empty list; should not happen in practice)*/
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/"));
assert(HANDLER_GO_ON == mod_alias_remap(&r, aliases));
/* Use-after-free bug in mod_alias
* https://redmine.lighttpd.net/issues/3114 */
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/"));
array_reset_data_strings(aliases);
array_set_key_value(aliases, CONST_STR_LEN("/"), CONST_STR_LEN(
"/very-long-path/longer-than-64/intended-to-trigger-str-reallocation/"));
assert(HANDLER_GO_ON == mod_alias_remap(&r, aliases));
assert(0 == strcmp(r.physical.basedir.ptr,
"/very-long-path/longer-than-64/intended-to-trigger-str-reallocation/"));
assert(0 == strcmp(r.physical.path.ptr,
"/very-long-path/longer-than-64/intended-to-trigger-str-reallocation/"));
/*(admin should prefer to match dirs with trailing '/', but test w/o)*/
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp/"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/"));
array_reset_data_strings(aliases);
array_set_key_value(aliases, CONST_STR_LEN("/"), CONST_STR_LEN("/var/tmp"));
assert(HANDLER_GO_ON == mod_alias_remap(&r, aliases));
assert(0 == strcmp(r.physical.basedir.ptr, "/var/tmp"));
assert(0 == strcmp(r.physical.path.ptr, "/var/tmp"));
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/foo"));
array_reset_data_strings(aliases);
array_set_key_value(aliases, CONST_STR_LEN("/foo"),
CONST_STR_LEN("/var/tmp/"));
assert(HANDLER_GO_ON == mod_alias_remap(&r, aliases));
assert(0 == strcmp(r.physical.basedir.ptr, "/var/tmp/"));
assert(0 == strcmp(r.physical.path.ptr, "/var/tmp/"));
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/fooddd"));
array_reset_data_strings(aliases);
array_set_key_value(aliases, CONST_STR_LEN("/foo"),
CONST_STR_LEN("/var/tmp/"));
assert(HANDLER_GO_ON == mod_alias_remap(&r, aliases));
assert(0 == strcmp(r.physical.basedir.ptr, "/var/tmp/"));
assert(0 == strcmp(r.physical.path.ptr, "/var/tmp/ddd"));
/* security: path traversal in mod_alias (in some use cases)
* https://redmine.lighttpd.net/issues/2898 */
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/foo../bad"));
array_reset_data_strings(aliases);
array_set_key_value(aliases, CONST_STR_LEN("/foo"),
CONST_STR_LEN("/var/tmp/"));
assert(HANDLER_FINISHED == mod_alias_remap(&r, aliases));
assert(403 == r.http_status);
r.http_status = 0;
/* replacement longer */
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/foo/x"));
array_reset_data_strings(aliases);
array_set_key_value(aliases, CONST_STR_LEN("/foo/"),
CONST_STR_LEN("/opt/var/tmp/"));
assert(HANDLER_GO_ON == mod_alias_remap(&r, aliases));
assert(0 == strcmp(r.physical.basedir.ptr, "/opt/var/tmp/"));
assert(0 == strcmp(r.physical.path.ptr, "/opt/var/tmp/x"));
/* replacement shorter */
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/foo/x"));
array_reset_data_strings(aliases);
array_set_key_value(aliases, CONST_STR_LEN("/foo/"),
CONST_STR_LEN("/ba/"));
assert(HANDLER_GO_ON == mod_alias_remap(&r, aliases));
assert(0 == strcmp(r.physical.basedir.ptr, "/ba/"));
assert(0 == strcmp(r.physical.path.ptr, "/ba/x"));
/* replacement same length */
buffer_copy_string_len(&r.physical.basedir, CONST_STR_LEN("/tmp"));
buffer_copy_string_len(&r.physical.path, CONST_STR_LEN("/tmp/foo/x"));
array_reset_data_strings(aliases);
array_set_key_value(aliases, CONST_STR_LEN("/foo/"),
CONST_STR_LEN("/var/tmp/"));
assert(HANDLER_GO_ON == mod_alias_remap(&r, aliases));
assert(0 == strcmp(r.physical.basedir.ptr, "/var/tmp/"));
assert(0 == strcmp(r.physical.path.ptr, "/var/tmp/x"));
array_free(aliases);
free(r.physical.path.ptr);
free(r.physical.basedir.ptr);
}
void test_mod_alias (void);
void test_mod_alias (void)
{
test_mod_alias_check();
}