[#114] update for older openssl compatability

evhtp.c

@@ -2826,16 +2826,35 @@ htp__accept_cb_(struct evconnlistener * serv, int fd, struct sockaddr * s, int s
 
 #ifndef EVHTP_DISABLE_SSL
 #ifndef EVHTP_DISABLE_EVTHR
-static void
-htp__ssl_get_thread_id_(CRYPTO_THREADID *id)
+static
+#if OPENSSL_VERSION_NUMBER >= 0x10000000L
+void
+#else
+unsigned long
+#endif
+htp__ssl_get_thread_id_(
+#if OPENSSL_VERSION_NUMBER >= 0x10000000L
+    CRYPTO_THREADID * id
+#else
+    void
+#endif
+    )
 {
-#ifndef WIN32
+    unsigned long tid;
 
+#ifndef WIN32
+    tid = (unsigned long)pthread_self();
     CRYPTO_THREADID_set_numeric(id, (unsigned long)pthread_self());
 #else
-
+    tid = pthread_self().p;
     CRYPTO_THREADID_set_numeric(id, (unsigned long)(pthread_self().p));
 #endif
+
+#if OPENSSL_VERSION_NUMBER >= 0x10000000L
+    CRYPTO_THREADID_set_numeric(id, tid);
+#else
+    return tid;
+#endif
 }
 
 static void
@@ -4694,8 +4713,12 @@ evhtp_ssl_use_threads(void)
         pthread_mutex_init(&(ssl_locks[i]), NULL);
     }
 
-    CRYPTO_THREADID_set_callback(htp__ssl_get_thread_id_);
+#if OPENSSL_VERSION_NUMBER < 0x10000000L
+    CRYPTO_set_id_callback(htp__ssl_get_thread_id_);
     CRYPTO_set_locking_callback(htp__ssl_thread_lock_);
+#else
+    CRYPTO_THREADID_set_callback(htp__ssl_get_thread_id_);
+#endif
 
     return 0;
 }