Changeset fa18523 in mainline for uspace/app/date/date.c

Timestamp:

2012-04-25T11:31:10Z (12 years ago)

Author:

Maurizio Lombardi <m.lombardi85@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

af7e3d3

Parents:

6a3808e

Message:

rtc: move tm_sanity check() from the rtc driver to the date application and make use of mktime() in the
rtc driver to normalize the content of the tm structure.

File:

• uspace/app/date/date.c (modified) (3 diffs)

uspace/app/date/date.c

@@ -43 +43 @@
 static int read_time_from_arg(char *wdate, struct tm *t);
 static int read_num_from_str(char *str, size_t len, int *n);
+static int tm_sanity_check(struct tm *t);
+static bool is_leap_year(int year);
+
 static void usage(void);
+
+static int days_month[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
 
 int
@@ -181 +186 @@
                 }
 
+                rc = tm_sanity_check(&t);
+                if (rc != EOK) {
+                        printf(NAME ": error, invalid date/time\n");
+                        goto exit;
+                }
+
                 rc = clock_dev_time_set(sess, &t);
                 if (rc != EOK) {
@@ -278 +289 @@
 }
 
+/** Check if the tm structure contains valid values
+ *
+ * @param t     The tm structure to check
+ *
+ * @return      EOK on success or EINVAL
+ */
+static int
+tm_sanity_check(struct tm *t)
+{
+        int ndays;
+
+        if (t->tm_sec < 0 || t->tm_sec > 59)
+                return EINVAL;
+        else if (t->tm_min < 0 || t->tm_min > 59)
+                return EINVAL;
+        else if (t->tm_hour < 0 || t->tm_hour > 23)
+                return EINVAL;
+        else if (t->tm_mday < 1 || t->tm_mday > 31)
+                return EINVAL;
+        else if (t->tm_mon < 0 || t->tm_mon > 11)
+                return EINVAL;
+        else if (t->tm_year < 0 || t->tm_year > 199)
+                return EINVAL;
+
+        if (t->tm_mon == 1/* FEB */ && is_leap_year(t->tm_year))
+                ndays = 29;
+        else
+                ndays = days_month[t->tm_mon];
+
+        if (t->tm_mday > ndays)
+                return EINVAL;
+
+        return EOK;
+}
+
+/** Check if a year is a leap year
+ *
+ * @param year   The year to check
+ *
+ * @return       true if it is a leap year, false otherwise
+ */
+static bool
+is_leap_year(int year)
+{
+        bool r = false;
+
+        if (year % 4 == 0) {
+                if (year % 100 == 0)
+                        r = year % 400 == 0;
+                else
+                        r = true;
+        }
+
+        return r;
+}
+
 static void
 usage(void)