]>
Commit | Line | Data |
---|---|---|
527eb8d2 | 1 | /* |
3c2bdd7d | 2 | * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. |
527eb8d2 RL |
3 | * |
4 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Extremely simple dynamic loader, must never be linked with anything other | |
12 | * than the standard C library. Its purpose is to try to load a dynamic module | |
13 | * and verify the presence of one symbol, if that's given. | |
14 | */ | |
15 | ||
16 | #include <stdio.h> | |
17 | #include <stdlib.h> | |
18 | #include <openssl/core.h> | |
19 | #include "simpledynamic.h" | |
20 | ||
21 | static int test_load(const char *path, const char *symbol) | |
22 | { | |
23 | #ifdef SD_INIT | |
24 | SD sd = SD_INIT; | |
25 | SD_SYM sym; | |
9b0f76e1 P |
26 | int ret; |
27 | ||
28 | if (!sd_load(path, &sd, SD_MODULE)) | |
29 | return 0; | |
30 | ret = symbol == NULL || sd_sym(sd, symbol, &sym); | |
31 | if (!sd_close(sd)) | |
32 | ret = 0; | |
33 | return ret; | |
527eb8d2 RL |
34 | #else |
35 | fprintf(stderr, "No dynamic loader\n"); | |
36 | return 0; | |
37 | #endif | |
38 | } | |
39 | ||
40 | int main(int argc, char *argv[]) | |
41 | { | |
42 | const char *m, *s; | |
43 | ||
44 | if (argc != 2 && argc != 3) { | |
45 | fprintf(stderr, "Usage: %s sharedobject [ entrypoint ]\n", argv[0]); | |
46 | return 1; | |
47 | } | |
48 | ||
49 | m = argv[1]; | |
50 | s = argc == 3 ? argv[2] : NULL; | |
51 | ||
52 | return test_load(m, s) ? 0 : 1; | |
53 | } |