disable TZ checksumming, fix setTime

[systembsd.git] / src / interfaces / timedated / timedated.c

diff --git a/src/interfaces/timedated/timedated.c b/src/interfaces/timedated/timedated.c
index c5d6bdf8bb87a208867c0452563828e35dfd98f1..61a48cb4873c47afcccf6c721cb8638a21aa4537 100644 (file)
--- a/src/interfaces/timedated/timedated.c
+++ b/src/interfaces/timedated/timedated.c
@@ -19,6 +19,7 @@
 #include <signal.h>
 
 #include <sys/types.h>
+#include <sys/time.h>
 #include <time.h>
 #include <string.h>
 
@@ -56,15 +57,108 @@ static struct timezone_checksum_pair tz_table[5000];
 /* --- begin method/property/dbus signal code --- */
 
 static gboolean
-on_handle_set_time(Timedate1 *hn1_passed_interf,
+on_handle_set_time(Timedate1 *td1_passed_interf,
                    GDBusMethodInvocation *invoc,
                    const gchar *greet,
                    gpointer data) {
-    return FALSE;
+
+    GVariant *params;
+    gint64 proposed_time, cur_time;
+    const gchar *bus_name;
+    gboolean policykit_auth;
+    check_auth_result is_authed;
+    gboolean relative; /* relative if passed time_t is meant to be added to current time */
+    struct timespec *new_time;
+
+    params = g_dbus_method_invocation_get_parameters(invoc);
+    g_variant_get(params, "(xbb)", &proposed_time, &relative, &policykit_auth);
+    bus_name = g_dbus_method_invocation_get_sender(invoc);
+
+    is_authed = polkit_try_auth(bus_name, "org.freedesktop.timedate1.set-time", policykit_auth);
+
+    switch(is_authed) {
+
+        case AUTHORIZED_NATIVELY:
+        case AUTHORIZED_BY_PROMPT:
+            break;
+
+        case UNAUTHORIZED_NATIVELY:
+        case UNAUTHORIZED_FAILED_PROMPT:
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EACCES", "Insufficient permissions to set system time.");
+            return FALSE;
+
+        case ERROR_BADBUS:
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided bus name is invalid.");
+            return FALSE;
+
+        case ERROR_BADACTION:
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EFAULT", "Provided action ID is invalid.");
+            return FALSE;
+
+        case ERROR_GENERIC:
+        default:
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to set system time for unknown reasons.");
+            return FALSE;
+    }
+
+    if(!proposed_time) {
+        
+        timedate1_complete_set_time(td1_passed_interf, invoc);
+        return TRUE;
+
+    } else if(relative) {
+
+        cur_time = g_get_real_time();
+
+        if(proposed_time < 0 && cur_time + proposed_time > cur_time) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EINVAL", "Resultant time out of bounds.");
+            return FALSE;
+
+        } else if(proposed_time > 0 && cur_time + proposed_time < cur_time) {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EINVAL", "Resultant time out of bounds.");
+            return FALSE;
+        }
+
+        new_time = mktimespec(proposed_time);
+
+        if(!clock_settime(CLOCK_REALTIME, new_time)) {
+
+            timedate1_complete_set_time(td1_passed_interf, invoc);
+            return TRUE;
+
+        } else {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to set system time for unknown reasons.");
+            return FALSE;
+        }
+
+    } else if(proposed_time > 0) {
+
+
+        new_time = mktimespec(proposed_time);
+
+        if(!clock_settime(CLOCK_REALTIME, new_time)) {
+
+            timedate1_complete_set_time(td1_passed_interf, invoc);
+            return TRUE;
+
+        } else {
+
+            g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.ECANCELED", "Failed to set system time for unknown reasons.");
+            return FALSE;
+        }
+
+    } else {
+
+        g_dbus_method_invocation_return_dbus_error(invoc, "org.freedesktop.timedate1.Error.EINVAL", "Resultant time out of bounds.");
+        return FALSE;
+    }
 }
 
 static gboolean
-on_handle_set_timezone(Timedate1 *hn1_passed_interf,
+on_handle_set_timezone(Timedate1 *td1_passed_interf,
                    GDBusMethodInvocation *invoc,
                    const gchar *greet,
                    gpointer data) {
@@ -72,7 +166,7 @@ on_handle_set_timezone(Timedate1 *hn1_passed_interf,
 }
 
 static gboolean
-on_handle_set_local_rtc(Timedate1 *hn1_passed_interf,
+on_handle_set_local_rtc(Timedate1 *td1_passed_interf,
                         GDBusMethodInvocation *invoc,
                         const gchar *greet,
                         gpointer data) {
@@ -80,7 +174,7 @@ on_handle_set_local_rtc(Timedate1 *hn1_passed_interf,
 }
 
 static gboolean
-on_handle_set_ntp(Timedate1 *hn1_passed_interf,
+on_handle_set_ntp(Timedate1 *td1_passed_interf,
                   GDBusMethodInvocation *invoc,
                   const gchar *greet,
                   gpointer data) {
@@ -122,7 +216,8 @@ our_get_timezone() {
         g_printf("%s is not a symlink! attempting to match checksums in %s...\n", OS_LOCALTIME, OS_TIMEZONE_PATH);
         hash_to_match = get_file_sha256(OS_LOCALTIME);
 
-        ret = lookup_hash(hash_to_match);
+        /* ret = lookup_hash(hash_to_match); */
+        return FALSE; /* TODO fix me for real */
 
         if(hash_to_match)
             g_free(hash_to_match);
@@ -278,8 +373,8 @@ int main() {
 
     set_signal_handlers();
 
-    if(!build_lookup_table())
-        return 1;
+    /*if(!build_lookup_table())
+        return 1; */
 
     timedated_loop = g_main_loop_new(NULL, TRUE);
     timedated_freeable = g_ptr_array_new();
@@ -353,7 +448,7 @@ static struct timezone_checksum_pair parse_timezone_path(gchar **pair) {
     return ret;
 }
 
-/* TODO need to deconstruct tz_table on exit */
+/* TODO need to deconstruct tz_table on exit
 static gboolean build_lookup_table() {
 
         gchar *find_cmd, **map_pairs, *find_output, *path_buf, *sum_buf, **entry_buf;
@@ -404,4 +499,32 @@ static gchar *lookup_hash(gchar *hash) {
             i++;
 
     return NULL;
+}*/
+
+/* takes number of microseconds since epoch and returns a 
+ * ptr to a timespec suitable to be passed to clock_settime(3)
+ */
+static struct timespec* mktimespec(gint64 us) {
+
+    long nanoseconds;
+    time_t seconds;
+
+    gint64 div_buf_remainder, div_buf_s, div_buf_ns;
+    struct timespec *ret;
+
+    div_buf_s         = (us / 1000000); /* us / 10^6 = s */
+    div_buf_remainder = (us % 1000000); /* fraction of second lost from prev. line */
+    div_buf_ns        = div_buf_remainder * 1000; /* us * 10^3 = ns */
+
+    seconds     = (time_t) div_buf_s; /* porting note: most systems use 32 bit time, adjust accordingly */
+    nanoseconds = (long)   div_buf_ns;
+
+    ret = (struct timespec *) calloc(1, sizeof(struct timespec));
+
+    ret->tv_sec  = seconds;
+    ret->tv_nsec = nanoseconds;
+
+    g_ptr_array_add(timedated_freeable, ret);
+
+    return ret;
 }