Add new idevicedate tool to get or set the clock on iDevices

2 files changed, 207 insertions, 1 deletions

diff --git a/tools/Makefile.am b/tools/Makefile.am
index f274084..0a47fdc 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -3,7 +3,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/include
 AM_CFLAGS = $(GLOBAL_CFLAGS) $(libglib2_CFLAGS) $(libgnutls_CFLAGS) $(libtasn1_CFLAGS) $(libgthread2_CFLAGS) $(LFS_CFLAGS)
 AM_LDFLAGS = $(libglib2_LIBS) $(libgnutls_LIBS) $(libtasn1_LIBS) $(libgthread2_LIBS)
 
-bin_PROGRAMS = idevice_id ideviceinfo idevicepair idevicesyslog idevicebackup ideviceimagemounter idevicescreenshot ideviceenterrecovery
+bin_PROGRAMS = idevice_id ideviceinfo idevicepair idevicesyslog idevicebackup ideviceimagemounter idevicescreenshot ideviceenterrecovery idevicedate
 
 ideviceinfo_SOURCES = ideviceinfo.c
 ideviceinfo_CFLAGS = $(AM_CFLAGS)
@@ -44,3 +44,8 @@ ideviceenterrecovery_SOURCES = ideviceenterrecovery.c
 ideviceenterrecovery_CFLAGS = $(AM_CFLAGS)
 ideviceenterrecovery_LDFLAGS = $(AM_LDFLAGS)
 ideviceenterrecovery_LDADD = ../src/libimobiledevice.la
+
+idevicedate_SOURCES = idevicedate.c
+idevicedate_CFLAGS = $(AM_CFLAGS)
+idevicedate_LDFLAGS = $(AM_LDFLAGS)
+idevicedate_LDADD = ../src/libimobiledevice.la
diff --git a/tools/idevicedate.c b/tools/idevicedate.c
new file mode 100644
index 0000000..b3e7334
--- /dev/null
+++ b/tools/idevicedate.c
@@ -0,0 +1,201 @@
+/*
+ * idevicedate.c
+ * Simple utility to get and set the clock on an iDevice
+ *
+ * Copyright (c) 2011 Martin Szulecki All Rights Reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#if HAVE_LANGINFO_CODESET
+# include <langinfo.h>
+#endif
+
+#include <libimobiledevice/libimobiledevice.h>
+#include <libimobiledevice/lockdown.h>
+
+#ifdef _DATE_FMT
+# define DATE_FMT_LANGINFO() nl_langinfo (_DATE_FMT)
+#else
+# define DATE_FMT_LANGINFO() ""
+#endif
+
+static void print_usage(int argc, char **argv)
+{
+	char *name = NULL;
+	
+	name = strrchr(argv[0], '/');
+	printf("Usage: %s [OPTIONS]\n", (name ? name + 1: argv[0]));
+	printf("Display the current date or set it on an iDevice.\n\n");
+	printf("  -d, --debug\t\tenable communication debugging\n");
+	printf("  -u, --uuid UUID\ttarget specific device by its 40-digit device UUID\n");
+	printf("  -s, --set TIMESTAMP\tset UTC time described by TIMESTAMP\n");
+	printf("  -c, --sync\t\tset time of device to current system time\n");
+	printf("  -h, --help\t\tprints usage information\n");
+	printf("\n");
+}
+
+int main(int argc, char *argv[])
+{
+	lockdownd_client_t client = NULL;
+	idevice_t phone = NULL;
+	idevice_error_t ret = IDEVICE_E_UNKNOWN_ERROR;
+	int i;
+	char uuid[41];
+	time_t setdate = 0;
+	plist_t node = NULL;
+	uuid[0] = 0;
+	uint64_t datetime = 0;
+	time_t rawtime;
+	double offset_from_utc = 0.0;
+	struct tm * tmp;
+	char const *format = NULL;
+	char buffer[80];
+	int tzshift = 0;
+
+	/* parse cmdline args */
+	for (i = 1; i < argc; i++) {
+		if (!strcmp(argv[i], "-d") || !strcmp(argv[i], "--debug")) {
+			idevice_set_debug_level(1);
+			continue;
+		}
+		else if (!strcmp(argv[i], "-u") || !strcmp(argv[i], "--uuid")) {
+			i++;
+			if (!argv[i] || (strlen(argv[i]) != 40)) {
+				print_usage(argc, argv);
+				return 0;
+			}
+			strcpy(uuid, argv[i]);
+			continue;
+		}
+		else if (!strcmp(argv[i], "-s") || !strcmp(argv[i], "--set")) {
+			i++;
+			if (!argv[i] || (strlen(argv[i]) <= 1)) {
+				print_usage(argc, argv);
+				return 0;
+			}
+			setdate = atoi(argv[i]);
+			if (setdate == 0) {
+				printf("ERROR: Invalid timestamp value.\n");
+				print_usage(argc, argv);
+				return 0;
+			}
+			tzshift = 1;
+			continue;
+		}
+		else if (!strcmp(argv[i], "-c") || !strcmp(argv[i], "--sync")) {
+			i++;
+			/* get current time */
+			setdate = time(NULL);
+			/* convert it to local time which sets timezone/daylight variables */
+			tmp = localtime(&setdate);
+			/* recalculate to make it UTC */
+			setdate = mktime(tmp) - timezone - (daylight ? 3600 : 0 );
+			tzshift = 0;
+			continue;
+		}
+		else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
+			print_usage(argc, argv);
+			return 0;
+		}
+		else {
+			print_usage(argc, argv);
+			return 0;
+		}
+	}
+
+	/* determine a date format */
+	if (!format) {
+		format = DATE_FMT_LANGINFO ();
+		if (!*format) {
+			format = "%a %b %e %H:%M:%S %Z %Y";
+		}
+	}
+
+	if (uuid[0] != 0) {
+		ret = idevice_new(&phone, uuid);
+		if (ret != IDEVICE_E_SUCCESS) {
+			printf("No device found with uuid %s, is it plugged in?\n", uuid);
+			return -1;
+		}
+	}
+	else
+	{
+		ret = idevice_new(&phone, NULL);
+		if (ret != IDEVICE_E_SUCCESS) {
+			printf("No device found, is it plugged in?\n");
+			return -1;
+		}
+	}
+
+	if (LOCKDOWN_E_SUCCESS != lockdownd_client_new_with_handshake(phone, &client, "idevicedate")) {
+		idevice_free(phone);
+		return -1;
+	}
+
+	/* read timezone offset of device, needed for conversions */
+	if (lockdownd_get_value(client, NULL, "TimeZoneOffsetFromUTC", &node) == LOCKDOWN_E_SUCCESS) {
+		if (node) {
+			plist_get_real_val(node, &offset_from_utc);
+			plist_free(node);
+			node = NULL;
+		}
+	}
+
+	/* get or set? */
+	if (setdate == 0) {
+		/* get time value from device */
+		if(lockdownd_get_value(client, NULL, "TimeIntervalSince1970", &node) == LOCKDOWN_E_SUCCESS) {
+			if (node) {
+				plist_get_uint_val(node, &datetime);
+				plist_free(node);
+				node = NULL;
+
+				/* date/time calculations */
+				rawtime = (time_t)datetime;
+				tmp = localtime(&rawtime);
+				tmp->tm_gmtoff = offset_from_utc;
+
+				/* finally we format and print the current date */
+				strftime(buffer, 80, format, tmp);
+				puts(buffer);
+			}
+		}
+	} else {
+		if (tzshift) {
+			/* if we had provided a timestamp and have to adjust according to the device's timezone */
+			setdate = setdate - offset_from_utc;
+		}
+		datetime = setdate;
+
+		if(lockdownd_set_value(client, NULL, "TimeIntervalSince1970", plist_new_uint(datetime)) == LOCKDOWN_E_SUCCESS) {
+			tmp = localtime(&setdate);
+			strftime(buffer, 80, format, tmp);
+			puts(buffer);
+		} else {
+			printf("ERROR: Failed to set date on device.\n");
+		}
+	}
+
+	lockdownd_client_free(client);
+	idevice_free(phone);
+
+	return 0;
+}
+