PenTest/nmap
1
0
Fork 0
mirror of https://github.com/nmap/nmap.git synced 2025-12-06 04:31:29 +00:00
Code Issues Projects Releases Wiki Activity

Clarify Nsock SSL cleanup state.

Browse Source
This commit is contained in:
dmiller
2022-08-25 16:29:48 +00:00
parent 5f88cbac30
commit 49005f99a2
1 changed files with 24 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
nsock/src/nsock_ssl.c
View File

@@ -82,17 +82,19 @@
#define CIPHERS_FAST "RC4-SHA:RC4-MD5:NULL-SHA:EXP-DES-CBC-SHA:EXP-EDH-RSA-DES-CBC-SHA:EXP-RC4-MD5:NULL-MD5:EDH-RSA-DES-CBC-SHA:EXP-RC2-CBC-MD5:EDH-RSA-DES-CBC3-SHA:EXP-ADH-RC4-MD5:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:EXP-ADH-DES-CBC-SHA:ADH-AES256-SHA:ADH-DES-CBC-SHA:ADH-RC4-MD5:AES256-SHA:DES-CBC-SHA:DES-CBC3-SHA:ADH-DES-CBC3-SHA:AES128-SHA:ADH-AES128-SHA:eNULL:ALL"
extern struct timeval nsock_tod;
/* If nsock_ssl_cleanup is 1, OPENSSL_cleanup() has not been called, so we need
* to free any SSL_CTX we allocated. If it is 0, OpenSSL already freed it, so
* ignore. */
static int nsock_ssl_cleanup = 1;
static void nsock_ssl_cleanup_done(void)
#define NSOCK_SSL_STATE_UNINITIALIZED -1
#define NSOCK_SSL_STATE_INITIALIZED 1
#define NSOCK_SSL_STATE_ATEXIT 0
static int nsock_ssl_state = NSOCK_SSL_STATE_UNINITIALIZED;
#if OPENSSL_VERSION_NUMBER >= 0x10100000L && defined LIBRESSL_VERSION_NUMBER
static void nsock_ssl_atexit(void)
{
nsock_ssl_cleanup = 0;
nsock_ssl_state = NSOCK_SSL_STATE_ATEXIT;
}
#endif
void nsp_ssl_cleanup(struct npool *nsp)
{
if (nsock_ssl_cleanup)
if (nsock_ssl_state != NSOCK_SSL_STATE_ATEXIT)
{
if (nsp->sslctx != NULL)
SSL_CTX_free(nsp->sslctx);
@@ -103,22 +105,26 @@ void nsp_ssl_cleanup(struct npool *nsp)
static SSL_CTX *ssl_init_helper(const SSL_METHOD *method) {
SSL_CTX *ctx;
if (nsock_ssl_state == NSOCK_SSL_STATE_UNINITIALIZED)
{
nsock_ssl_state = NSOCK_SSL_STATE_INITIALIZED;
#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined LIBRESSL_VERSION_NUMBER
SSL_load_error_strings();
SSL_library_init();
SSL_load_error_strings();
SSL_library_init();
#else
OPENSSL_atexit(nsock_ssl_cleanup_done);
OPENSSL_atexit(nsock_ssl_atexit);
#if OPENSSL_API_LEVEL >= 30000
if (NULL == OSSL_PROVIDER_load(NULL, "legacy"))
{
nsock_log_error("OpenSSL legacy provider failed to load.\n");
}
if (NULL == OSSL_PROVIDER_load(NULL, "default"))
{
nsock_log_error("OpenSSL default provider failed to load.\n");
}
if (NULL == OSSL_PROVIDER_load(NULL, "legacy"))
{
nsock_log_error("OpenSSL legacy provider failed to load.\n");
}
if (NULL == OSSL_PROVIDER_load(NULL, "default"))
{
nsock_log_error("OpenSSL default provider failed to load.\n");
}
#endif
#endif
}
ctx = SSL_CTX_new(method);
if (!ctx) {