67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2022 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* 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 <stdbool.h>
|
||
|
|
#include <dlfcn.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <ipp.h>
|
||
|
|
#include "../includes/common.h"
|
||
|
|
|
||
|
|
bool isInitialized = false;
|
||
|
|
|
||
|
|
bool isVulnerable = false;
|
||
|
|
|
||
|
|
bool isTestInProgress = false;
|
||
|
|
|
||
|
|
const char *kExposedLanguageString = "en-us";
|
||
|
|
|
||
|
|
static size_t (*realStrlen)(const char *str) = NULL;
|
||
|
|
|
||
|
|
void init() {
|
||
|
|
realStrlen = (size_t(*)(const char *))dlsym(RTLD_NEXT, "strlen");
|
||
|
|
if (realStrlen == NULL) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
isInitialized = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t strlen(const char *str) {
|
||
|
|
if (!isInitialized) {
|
||
|
|
init();
|
||
|
|
}
|
||
|
|
if (isTestInProgress && (strcmp(str, kExposedLanguageString) == 0)) {
|
||
|
|
isVulnerable = true;
|
||
|
|
}
|
||
|
|
return realStrlen(str);
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char **argv) {
|
||
|
|
FAIL_CHECK(argc > 1);
|
||
|
|
int fileDescriptor = open((const char *)argv[1], O_RDONLY);
|
||
|
|
FAIL_CHECK(fileDescriptor >= 0);
|
||
|
|
ipp_t *job = ippNew();
|
||
|
|
if (!job) {
|
||
|
|
close(fileDescriptor);
|
||
|
|
FAIL_CHECK(job != NULL);
|
||
|
|
}
|
||
|
|
isTestInProgress = true;
|
||
|
|
ippReadFile(fileDescriptor, job);
|
||
|
|
isTestInProgress = false;
|
||
|
|
free(job);
|
||
|
|
close(fileDescriptor);
|
||
|
|
return (isVulnerable) ? EXIT_VULNERABLE : EXIT_SUCCESS;
|
||
|
|
}
|