[PATCH] Make the email headers be written in localtime rather than GMT

qmail-date-localtime

1 files changed, 41 insertions, 7 deletions

diff --git a/date822fmt.c b/date822fmt.c
index 7674bd1..f4942b3 100644
--- a/date822fmt.c
+++ b/date822fmt.c
@@ -1,3 +1,4 @@
+#include <time.h>
 #include "datetime.h"
 #include "fmt.h"
 #include "date822fmt.h"
@@ -12,18 +13,51 @@ struct datetime *dt;
 {
   unsigned int i;
   unsigned int len;
+  time_t now;
+  datetime_sec utc;
+  datetime_sec local;
+  struct tm *tm;
+  struct datetime new_dt;
+  int minutes;
+
+  utc = datetime_untai(dt);
+  now = (time_t)utc;
+  tm = localtime(&now);
+  new_dt.year = tm->tm_year;
+  new_dt.mon = tm->tm_mon;
+  new_dt.mday = tm->tm_mday;
+  new_dt.hour = tm->tm_hour;
+  new_dt.min = tm->tm_min;
+  new_dt.sec = tm->tm_sec;
+  local = datetime_untai(&new_dt);
+
   len = 0;
-  i = fmt_uint(s,dt->mday); len += i; if (s) s += i;
+  i = fmt_uint(s,new_dt.mday); len += i; if (s) s += i;
   i = fmt_str(s," "); len += i; if (s) s += i;
-  i = fmt_str(s,montab[dt->mon]); len += i; if (s) s += i;
+  i = fmt_str(s,montab[new_dt.mon]); len += i; if (s) s += i;
   i = fmt_str(s," "); len += i; if (s) s += i;
-  i = fmt_uint(s,dt->year + 1900); len += i; if (s) s += i;
+  i = fmt_uint(s,new_dt.year + 1900); len += i; if (s) s += i;
   i = fmt_str(s," "); len += i; if (s) s += i;
-  i = fmt_uint0(s,dt->hour,2); len += i; if (s) s += i;
+  i = fmt_uint0(s,new_dt.hour,2); len += i; if (s) s += i;
   i = fmt_str(s,":"); len += i; if (s) s += i;
-  i = fmt_uint0(s,dt->min,2); len += i; if (s) s += i;
+  i = fmt_uint0(s,new_dt.min,2); len += i; if (s) s += i;
   i = fmt_str(s,":"); len += i; if (s) s += i;
-  i = fmt_uint0(s,dt->sec,2); len += i; if (s) s += i;
-  i = fmt_str(s," -0000\n"); len += i; if (s) s += i;
+  i = fmt_uint0(s,new_dt.sec,2); len += i; if (s) s += i;
+
+  if (local < utc) {
+    minutes = (utc - local + 30) / 60;
+    i = fmt_str(s," -"); len += i; if (s) s += i;
+    i = fmt_uint0(s,minutes / 60,2); len += i; if (s) s += i;
+    i = fmt_uint0(s,minutes % 60,2); len += i; if (s) s += i;
+  }
+  else {
+    minutes = (local - utc + 30) / 60;
+    i = fmt_str(s," +"); len += i; if (s) s += i;
+    i = fmt_uint0(s,minutes / 60,2); len += i; if (s) s += i;
+    i = fmt_uint0(s,minutes % 60,2); len += i; if (s) s += i;
+  }
+
+  i = fmt_str(s,"\n"); len += i; if (s) s += i;
+
   return len;
 }