- check CRYPTO_get_id_callback() whether someone else already set thread lock callbacks

# this might also be of interest to ext/curl

diff --git a/http_request_api.c b/http_request_api.c
index fa8ea70d2807566f5417b6330ecbaeab26c9c2e3..bfb3574da277345d342f217154aa5699292f2c07 100644 (file)
--- a/http_request_api.c
+++ b/http_request_api.c
@@ -87,16 +87,19 @@ static struct gcry_thread_cbs http_gnutls_tsl = {
 PHP_MINIT_FUNCTION(http_request)
 {
 #ifdef HTTP_NEED_OPENSSL_TSL
-       int i, c = CRYPTO_num_locks();
-       
-       http_openssl_tsl = malloc(c * sizeof(MUTEX_T));
-       
-       for (i = 0; i < c; ++i) {
-               http_openssl_tsl[i] = tsrm_mutex_alloc();
+       /* mod_ssl, libpq or ext/curl might already have set thread lock callbacks */
+       if (!CRYPTO_get_id_callback()) {
+               int i, c = CRYPTO_num_locks();
+               
+               http_openssl_tsl = malloc(c * sizeof(MUTEX_T));
+               
+               for (i = 0; i < c; ++i) {
+                       http_openssl_tsl[i] = tsrm_mutex_alloc();
+               }
+               
+               CRYPTO_set_id_callback(http_openssl_thread_id);
+               CRYPTO_set_locking_callback(http_openssl_thread_lock);
        }
-       
-       CRYPTO_set_id_callback(http_openssl_thread_id);
-       CRYPTO_set_locking_callback(http_openssl_thread_lock);
 #endif
 #ifdef HTTP_NEED_GNUTLS_TSL
        gcry_control(GCRYCTL_SET_THREAD_CBS, &http_gnutls_tsl);
@@ -138,10 +141,6 @@ PHP_MINIT_FUNCTION(http_request)
 /* {{{ MSHUTDOWN */
 PHP_MSHUTDOWN_FUNCTION(http_request)
 {
-#ifdef HTTP_NEED_OPENSSL_TSL
-       CRYPTO_set_id_callback(http_openssl_thread_id);
-       CRYPTO_set_locking_callback(http_openssl_thread_lock);
-#endif
        curl_global_cleanup();
 #ifdef HTTP_NEED_OPENSSL_TSL
        if (http_openssl_tsl) {