wraith-ircbot/src/compat/openssl.cc

#include <openssl/opensslv.h>
#if OPENSSL_VERSION_NUMBER < 0x10100000L
#include <stdlib.h>
#include <stdint.h>
#include "dl.h"

extern "C" {
typedef int (*OPENSSL_init_ssl_t)(uint64_t a1, const void *a2);
int _OPENSSL_init_ssl(uint64_t a1 __unused, const void *a2 __unused) {
  if (DLSYM_VAR(OPENSSL_init_ssl) == NULL)
    if (DLSYM_GLOBAL_SIMPLE(RTLD_NEXT, OPENSSL_init_ssl) == NULL)
      return 0;
  return DLSYM_VAR(OPENSSL_init_ssl)(a1, a2);
}

void _ERR_free_strings(void) {
}

void _EVP_cleanup(void) {
}

void _CRYPTO_cleanup_all_ex_data(void) {
}

int _SSL_library_init(void) {
  return _OPENSSL_init_ssl(0, NULL);
}

#define OPENSSL_INIT_LOAD_CRYPTO_STRINGS    0x00000002L
#define OPENSSL_INIT_LOAD_SSL_STRINGS       0x00200000L
void _SSL_load_error_strings(void) {
    _OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS \
                     | OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);
}

typedef void *(*TLS_client_method_t)(void);
const void *_TLS_client_method(void) {
  if (DLSYM_VAR(TLS_client_method) == NULL)
    if (DLSYM_GLOBAL_SIMPLE(RTLD_NEXT, TLS_client_method) == NULL)
      return NULL;
  return DLSYM_VAR(TLS_client_method)();
}

const void *_SSLv23_client_method(void) {
  return _TLS_client_method();
}

} /* extern "C" */
#endif	/* OPENSSL_VERSION_NUMBER < 0x10100000L */