fix: NTP syncs as soon as DHCP has a lease, random origin cookie instead of the unsynced local clock, TLS validates certificates against UTC

programs/include/libc/montauk.h

@@ -232,6 +232,7 @@ extern "C" {
 #define MTK_SYS_WIN_DRAG_FORMATS    206
 #define MTK_SYS_WIN_DRAG_GET_DATA   207
 #define MTK_SYS_FS_GROW             208
+#define MTK_SYS_GETUNIXTIME         209
 /* @SYSCALLS-END */
 
 /* Syscall status codes (montauk/statuscodes.h for C++). */
@@ -805,6 +806,10 @@ static inline void mtk_gettime(mtk_datetime *out) {
     _mtk_syscall1(MTK_SYS_GETTIME, (long)out);
 }
 
+static inline int64_t mtk_get_unix_time(void) {
+    return (int64_t)_mtk_syscall0(MTK_SYS_GETUNIXTIME);
+}
+
 static inline int mtk_set_unix_time(int64_t unix_seconds) {
     return (int)_mtk_syscall1(MTK_SYS_SETUNIXTIME, (long)unix_seconds);
 }