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authorGravatar Nikias Bassen2014-03-21 20:45:16 +0100
committerGravatar Nikias Bassen2014-03-21 20:45:16 +0100
commitdaf3b235f4f04c21b2765f61db7ae56ff9cdb6ba (patch)
treec0656607175cdeff238a7fe5e2dfe94302992a51 /src
parentd95dfaacb04448230a4ab6a3fb152d96d13e959f (diff)
downloadlibimobiledevice-daf3b235f4f04c21b2765f61db7ae56ff9cdb6ba.tar.gz
libimobiledevice-daf3b235f4f04c21b2765f61db7ae56ff9cdb6ba.tar.bz2
implement global thread safe library initialization
Diffstat (limited to 'src')
-rw-r--r--src/idevice.c89
1 files changed, 80 insertions, 9 deletions
diff --git a/src/idevice.c b/src/idevice.c
index 3d20069..28a62b0 100644
--- a/src/idevice.c
+++ b/src/idevice.c
@@ -36,10 +36,89 @@
#endif
#include "idevice.h"
#include "common/userpref.h"
+#include "common/thread.h"
#include "common/debug.h"
#ifdef HAVE_OPENSSL
-static int openssl_init_done = 0;
+static mutex_t *mutex_buf = NULL;
+static void locking_function(int mode, int n, const char* file, int line)
+{
+ if (mode & CRYPTO_LOCK)
+ mutex_lock(&mutex_buf[n]);
+ else
+ mutex_unlock(&mutex_buf[n]);
+}
+
+static unsigned long id_function(void)
+{
+ return ((unsigned long)THREAD_ID);
+}
+#endif
+
+static void internal_idevice_init(void)
+{
+#ifdef HAVE_OPENSSL
+ int i;
+ SSL_library_init();
+
+ mutex_buf = malloc(CRYPTO_num_locks() * sizeof(mutex_t));
+ if (!mutex_buf)
+ return;
+ for (i = 0; i < CRYPTO_num_locks(); i++)
+ mutex_init(&mutex_buf[i]);
+
+ CRYPTO_set_id_callback(id_function);
+ CRYPTO_set_locking_callback(locking_function);
+#else
+ gnutls_global_init();
+#endif
+}
+
+static void internal_idevice_deinit(void)
+{
+#ifdef HAVE_OPENSSL
+ int i;
+ if (!mutex_buf)
+ return;
+ CRYPTO_set_id_callback(NULL);
+ CRYPTO_set_locking_callback(NULL);
+ for (i = 0; i < CRYPTO_num_locks(); i++)
+ mutex_destroy(&mutex_buf[i]);
+ free(mutex_buf);
+ mutex_buf = NULL;
+#else
+ gnutls_global_deinit();
+#endif
+}
+
+static thread_once_t init_once = THREAD_ONCE_INIT;
+static thread_once_t deinit_once = THREAD_ONCE_INIT;
+
+#ifdef WIN32
+int APIENTRY DllMain(HANDLE hModule, DWORD dwReason, LPVOID lpReserved)
+{
+ switch (dwReason) {
+ case DLL_PROCESS_ATTACH:
+ thread_once(&init_once, internal_idevice_init);
+ break;
+ case DLL_PROCESS_DETACH:
+ thread_once(&deinit_once, internal_idevice_deinit);
+ break;
+ default:
+ break;
+ }
+ return 1;
+}
+#else
+static void __attribute__((constructor)) libimobiledevice_initialize(void)
+{
+ thread_once(&init_once, internal_idevice_init);
+}
+
+static void __attribute__((destructor)) libimobiledevice_deinitialize(void)
+{
+ thread_once(&deinit_once, internal_idevice_deinit);
+}
#endif
static idevice_event_cb_t event_cb = NULL;
@@ -575,7 +654,6 @@ static void internal_ssl_cleanup(ssl_data_t ssl_data)
if (ssl_data->ctx) {
SSL_CTX_free(ssl_data->ctx);
}
- openssl_init_done = 0;
#else
if (ssl_data->session) {
gnutls_deinit(ssl_data->session);
@@ -691,12 +769,6 @@ idevice_error_t idevice_connection_enable_ssl(idevice_connection_t connection)
if (pair_record)
plist_free(pair_record);
- /* Set up OpenSSL */
- if (openssl_init_done == 0) {
- SSL_library_init();
- openssl_init_done = 1;
- }
-
BIO *ssl_bio = BIO_new(BIO_s_socket());
if (!ssl_bio) {
debug_info("ERROR: Could not create SSL bio.");
@@ -761,7 +833,6 @@ idevice_error_t idevice_connection_enable_ssl(idevice_connection_t connection)
/* Set up GnuTLS... */
debug_info("enabling SSL mode");
- gnutls_global_init();
errno = 0;
gnutls_certificate_allocate_credentials(&ssl_data_loc->certificate);
gnutls_certificate_client_set_retrieve_function(ssl_data_loc->certificate, internal_cert_callback);