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/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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 <dlfcn.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
static void *s2n_load_dynamic_lib(void *ctx)
{
const char *s2n_so_path = ctx;
void *s2n_so = dlopen(s2n_so_path, RTLD_NOW);
if (!s2n_so) {
printf("Error dynamically loading libs2n\n");
printf("%s\n", dlerror());
exit(1);
}
int (*s2n_init_dl)(void) = NULL;
*(void **) (&s2n_init_dl) = dlsym(s2n_so, "s2n_init");
if (dlerror()) {
printf("Error dynamically loading s2n_init\n");
exit(1);
}
int (*s2n_cleanup_final_dl)(void) = NULL;
*(void **) (&s2n_cleanup_final_dl) = dlsym(s2n_so, "s2n_cleanup_final");
if (dlerror()) {
printf("Error dynamically loading s2n_cleanup_final\n");
exit(1);
}
int (*s2n_errno_location_dl)(void) = NULL;
*(void **) (&s2n_errno_location_dl) = dlsym(s2n_so, "s2n_errno_location");
if (dlerror()) {
printf("Error dynamically loading s2n_errno_location\n");
exit(1);
}
const char *(*s2n_strerror_debug_dl)(int error, const char *lang) = NULL;
*(void **) (&s2n_strerror_debug_dl) = dlsym(s2n_so, "s2n_strerror_debug");
if (dlerror()) {
printf("Error dynamically loading s2n_strerror_debug\n");
exit(1);
}
if ((*s2n_init_dl)()) {
int s2n_errno = (*s2n_errno_location_dl)();
fprintf(stderr, "Error calling s2n_init: '%s'\n", (*s2n_strerror_debug_dl)(s2n_errno, "EN"));
exit(1);
}
if ((*s2n_cleanup_final_dl)()) {
int s2n_errno = (*s2n_errno_location_dl)();
fprintf(stderr, "Error calling s2n_cleanup_final: '%s'\n", (*s2n_strerror_debug_dl)(s2n_errno, "EN"));
exit(1);
}
/* TODO: https://github.com/aws/s2n-tls/issues/4827
* This dlclose call invokes the pthread key destructor that
* asserts that the s2n-tls library is initialized, which at this point
* is not, due to the s2n_cleanup_final call. This is a bug.
if (dlclose(s2n_so)) {
printf("Error closing libs2n\n");
printf("%s\n", dlerror());
exit(1);
}
*/
return NULL;
}
int main(int argc, char *argv[])
{
if (argc != 2) {
printf("Usage: s2n_dynamic_load_test <path to s2n shared object>\n");
exit(1);
}
/* s2n-tls library can be dynamically loaded and cleaned up safely
*
* We can't use any s2n test macros because this test doesn't get linked to
* s2n during compile-time. This test is in a loop to make sure that we are
* cleaning up pthread keys properly.
*/
for (size_t i = 0; i <= PTHREAD_KEYS_MAX + 1; i++) {
pthread_t thread_id = { 0 };
if (pthread_create(&thread_id, NULL, &s2n_load_dynamic_lib, argv[1])) {
printf("Error creating thread at loop index: %li\n", i);
exit(1);
}
if (pthread_join(thread_id, NULL)) {
printf("Error joining thread at loop index: %li\n", i);
exit(1);
}
}
return 0;
}
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