54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
|
/*
|
||
|
|
* Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
||
|
|
* this file except in compliance with the License. You can obtain a copy
|
||
|
|
* in the file LICENSE in the source distribution or at
|
||
|
|
* https://www.openssl.org/source/license.html
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Extremely simple dynamic loader, must never be linked with anything other
|
||
|
|
* than the standard C library. Its purpose is to try to load a dynamic module
|
||
|
|
* and verify the presence of one symbol, if that's given.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <openssl/core.h>
|
||
|
|
#include "simpledynamic.h"
|
||
|
|
|
||
|
|
static int test_load(const char *path, const char *symbol)
|
||
|
|
{
|
||
|
|
#ifdef SD_INIT
|
||
|
|
SD sd = SD_INIT;
|
||
|
|
SD_SYM sym;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (!sd_load(path, &sd, SD_MODULE))
|
||
|
|
return 0;
|
||
|
|
ret = symbol == NULL || sd_sym(sd, symbol, &sym);
|
||
|
|
if (!sd_close(sd))
|
||
|
|
ret = 0;
|
||
|
|
return ret;
|
||
|
|
#else
|
||
|
|
fprintf(stderr, "No dynamic loader\n");
|
||
|
|
return 0;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char *argv[])
|
||
|
|
{
|
||
|
|
const char *m, *s;
|
||
|
|
|
||
|
|
if (argc != 2 && argc != 3) {
|
||
|
|
fprintf(stderr, "Usage: %s sharedobject [ entrypoint ]\n", argv[0]);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
m = argv[1];
|
||
|
|
s = argc == 3 ? argv[2] : NULL;
|
||
|
|
|
||
|
|
return test_load(m, s) ? 0 : 1;
|
||
|
|
}
|