[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/util-linux/rdate.c b/ap/app/busybox/src/util-linux/rdate.c
new file mode 100644
index 0000000..6e35cd5
--- /dev/null
+++ b/ap/app/busybox/src/util-linux/rdate.c
@@ -0,0 +1,79 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * The Rdate command will ask a time server for the RFC 868 time
+ * and optionally set the system time.
+ *
+ * by Sterling Huxley <sterling@europa.com>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+*/
+
+//usage:#define rdate_trivial_usage
+//usage: "[-sp] HOST"
+//usage:#define rdate_full_usage "\n\n"
+//usage: "Get and possibly set the system date/time from a remote HOST\n"
+//usage: "\n -s Set the system date/time (default)"
+//usage: "\n -p Print the date/time"
+
+#include "libbb.h"
+
+enum { RFC_868_BIAS = 2208988800UL };
+
+static void socket_timeout(int sig UNUSED_PARAM)
+{
+ bb_error_msg_and_die("timeout connecting to time server");
+}
+
+static time_t askremotedate(const char *host)
+{
+ uint32_t nett;
+ int fd;
+
+ /* Add a timeout for dead or inaccessible servers */
+ alarm(10);
+ signal(SIGALRM, socket_timeout);
+
+ fd = create_and_connect_stream_or_die(host, bb_lookup_port("time", "tcp", 37));
+
+ if (safe_read(fd, &nett, 4) != 4) /* read time from server */
+ bb_error_msg_and_die("%s did not send the complete time", host);
+ if (ENABLE_FEATURE_CLEAN_UP)
+ close(fd);
+
+ /* Convert from network byte order to local byte order.
+ * RFC 868 time is the number of seconds
+ * since 00:00 (midnight) 1 January 1900 GMT
+ * the RFC 868 time 2,208,988,800 corresponds to 00:00 1 Jan 1970 GMT
+ * Subtract the RFC 868 time to get Linux epoch.
+ */
+
+ return ntohl(nett) - RFC_868_BIAS;
+}
+
+int rdate_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int rdate_main(int argc UNUSED_PARAM, char **argv)
+{
+ time_t remote_time;
+ unsigned flags;
+
+ opt_complementary = "-1";
+ flags = getopt32(argv, "sp");
+
+ remote_time = askremotedate(argv[optind]);
+
+ if (!(flags & 2)) { /* no -p (-s may be present) */
+ time_t current_time;
+
+ time(¤t_time);
+ if (current_time == remote_time)
+ bb_error_msg("current time matches remote time");
+ else
+ if (stime(&remote_time) < 0)
+ bb_perror_msg_and_die("can't set time of day");
+ }
+
+ if (flags != 1) /* not lone -s */
+ printf("%s", ctime(&remote_time));
+
+ return EXIT_SUCCESS;
+}