Use mu_strftime

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 1999, 2001, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2001, 2005, 2006 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -67,7 +67,7 @@ _append_date (mu_envelope_t envelope, char *buf, size_t len, size_t *pnwrite)
   mu_message_t msg = mu_envelope_get_owner (envelope);
   struct tm **tm = mu_message_get_owner (msg);
 
-  strftime (buf, len, "%a %b %d %H:%M:%S %Y", *tm);
+  mu_strftime (buf, len, "%a %b %d %H:%M:%S %Y", *tm);
   return 0;
 }
 

 /* GNU Mailutils -- a suite of utilities for electronic mail
-   Copyright (C) 1999, 2001, 2005 Free Software Foundation, Inc.
+   Copyright (C) 1999, 2001, 2005, 2006 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -367,7 +367,7 @@ fetch_internaldate (struct fetch_command *command, char **arg ARG_UNUSED)
       time_t t = time(NULL);
       tmp = localtime(&t);
     }
-  strftime (date, sizeof (date), "%d-%b-%Y %H:%M:%S", tmp);
+  mu_strftime (date, sizeof (date), "%d-%b-%Y %H:%M:%S", tmp);
   util_send ("%s", command->name);
   util_send (" \"%s +0000\"", date);
   return RESP_OK;

 /* GNU Mailutils -- a suite of utilities for electronic mail
    Copyright (C) 1999, 2000, 2001, 2003, 2004, 
-   2005 Free Software Foundation, Inc.
+   2005, 2006 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -1560,31 +1560,20 @@ imap_envelope_date (mu_envelope_t envelope, char *buffer, size_t buflen,
      parsed, use the calendar time. */
   if (now == (time_t)-1)
     {
-      struct tm* gmt;
+      struct tm *gmt;
 
-      time(&now);
-      gmt = gmtime(&now);
+      time (&now);
+      gmt = gmtime (&now);
       tm = *gmt;
     }
 
   {
-    int len = strftime (buffer, buflen, " %a %b %d %H:%M:%S %Y", &tm);
-
-    /* FIXME: I don't know what strftime does if the buflen is too
-       short, or it fails. Assuming that it won't fail, this is my guess
-       as to the right thing.
-
-       I think if the buffer is too short, it will fill it as much
-       as it can, and nul terminate it. But I'll terminate it anyhow.
-     */
-    if(len == 0)
-      {
-	len = buflen - 1;
-	buffer[len] = 0;
-      }
-
-    if(plen)
-      *plen = len;
+    char tmpbuf[MU_ENVELOPE_DATE_LENGTH+1];
+    size_t n = mu_strftime (tmpbuf, sizeof tmpbuf,
+                            MU_ENVELOPE_DATE_FORMAT, localtime (&tm));
+    n = mu_cpystr (buffer, tmpbuf, buflen);
+    if (plen)
+      *plen = n;
   }
   return 0;
 }

@@ -1373,12 +1373,11 @@ restore_date (mu_message_t msg, mbox_data_t mud)
 
   if (date && mu_parse_date (date, &t, NULL))
     {
-      char datebuf[25];
+      char datebuf[MU_ENVELOPE_DATE_LENGTH+1];
       
       /* FIXME: 1. Preserve TZ info */
-      /* FIXME: 2. Do not depend on LC */
-      strftime (datebuf, sizeof datebuf, "%a %b %d %H:%M:%S %Y",
-		localtime (&t));
+      mu_strftime (datebuf, sizeof datebuf, MU_ENVELOPE_DATE_FORMAT,
+		   localtime (&t));
       free (date);
       date = strdup (datebuf);
     }

@@ -155,7 +155,7 @@ mime_create_reason (mu_mime_t mime, mu_message_t msg, const char *text)
 
   time (&t);
   tm = localtime (&t);
-  strftime (datestr, sizeof datestr, "%a, %b %d %H:%M:%S %Y %Z", tm);
+  mu_strftime (datestr, sizeof datestr, "%a, %b %d %H:%M:%S %Y %Z", tm);
 
   mu_sieve_get_message_sender (msg, &sender);
 

 /* GNU Mailutils -- a suite of utilities for electronic mail
    Copyright (C) 1999, 2000, 2001, 2002, 2004, 
-   2005 Free Software Foundation, Inc.
+   2005, 2006 Free Software Foundation, Inc.
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -948,20 +948,18 @@ message_date (mu_envelope_t envelope, char *buf, size_t len, size_t *pnwrite)
 
   /* FIXME: extract the time from "Date:".  */
 
-  /* Catch all.  */
-  /* FIXME: ctime() is not thread safe use strftime().  */
-  t = time (NULL);
-  n = strlen (ctime (&t));
-
   if (buf == NULL || len == 0)
     {
-      if (pnwrite)
-	*pnwrite = n;
-      return 0;
+      n = MU_ENVELOPE_DATE_LENGTH;
+    }
+  else
+    {
+      char tmpbuf[MU_ENVELOPE_DATE_LENGTH+1];
+      t = time (NULL);
+      n = mu_strftime (tmpbuf, sizeof tmpbuf, 
+                       MU_ENVELOPE_DATE_FORMAT, localtime (&t));
+      n = mu_cpystr (buf, tmpbuf, len);
     }
-  n = (n > len) ? len : n;
-  strncpy (buf, ctime (&t), n);
-  buf [n] = '\0';
   if (pnwrite)
     *pnwrite = n;
   return 0;

@@ -261,11 +261,11 @@ restore_envelope (mu_stream_t str, struct _mu_rfc822_message **pmenv)
     {
       struct tm *tm;
       time_t t;
-      char date[80];
+      char date[80]; /* FIXME: This size is way too big */
 
       time(&t);
       tm = gmtime(&t);
-      strftime (date, sizeof (date), "%a %b %e %H:%M:%S %Y", tm);
+      mu_strftime (date, sizeof (date), "%a %b %e %H:%M:%S %Y", tm);
       env_date = strdup (date);
     }
 

 /* GNU Mailutils -- a suite of utilities for electronic mail
    Copyright (C) 1999, 2000, 2001, 2002, 2003, 
-   2005 Free Software Foundation, Inc.
+   2005, 2006 Free Software Foundation, Inc.
 
    GNU Mailutils is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -357,7 +357,7 @@ mh_audit_open (char *name, mu_mailbox_t mbox)
   
   time (&t);
   tm = localtime (&t);
-  strftime (date, sizeof date, "%a, %d %b %Y %H:%M:%S %Z", tm);
+  mu_strftime (date, sizeof date, "%a, %d %b %Y %H:%M:%S %Z", tm);
   mu_mailbox_get_url (mbox, &url);
   
   fprintf (fp, "<<%s>> %s %s\n",
@@ -758,7 +758,7 @@ mh_annotate (mu_message_t msg, char *field, char *text, int date)
       char datebuf[80];
       t = time (NULL);
       tm = localtime (&t);
-      strftime (datebuf, sizeof datebuf, "%a, %d %b %Y %H:%M:%S %Z", tm);
+      mu_strftime (datebuf, sizeof datebuf, "%a, %d %b %Y %H:%M:%S %Z", tm);
 
       mu_header_set_value (hdr, field, datebuf, 0);
     }
@@ -786,7 +786,7 @@ mh_create_message_id (int subpart)
   char *host;
   char *p;
 	  
-  strftime (date, sizeof date, "%Y%m%d%H%M%S", tm);
+  mu_strftime (date, sizeof date, "%Y%m%d%H%M%S", tm);
   mu_get_host_name (&host);
 
   if (subpart)

@@ -456,7 +456,7 @@ _action_send (void *item, void *data)
       time_t t = time (NULL);
       struct tm *tm = localtime (&t);
       
-      strftime (date, sizeof date, "%a, %d %b %Y %H:%M:%S %Z", tm);
+      mu_strftime (date, sizeof date, "%a, %d %b %Y %H:%M:%S %Z", tm);
       mu_header_set_value (hdr, MU_HEADER_DATE, date, 1);
 
       if (mu_header_get_value (hdr, MU_HEADER_FROM, NULL, 0, &n))