pico/osdep/newmail.c

   1 /*
   2  * ========================================================================
   3  * Copyright 2006-2007 University of Washington
   4  * Copyright 2013-2022 Eduardo Chappa
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * ========================================================================
  13  */
  14
  15 #include <system.h>
  16 #include <general.h>
  17
  18 #include "../estruct.h"
  19 #include "../mode.h"
  20 #include "../pico.h"
  21 #include "../edef.h"
  22 #include "../efunc.h"
  23 #include "../keydefs.h"
  24
  25 #include "../../pith/charconv/filesys.h"
  26
  27 #include "newmail.h"
  28
  29
  30
  31
  32 /*
  33  * pico_new_mail - just checks mtime and atime of mail file and notifies user
  34  *                 if it's possible that they have new mail.
  35  */
  36 int
  37 pico_new_mail(void)
  38 {
  39 #ifndef _WINDOWS
  40     int ret = 0;
  41     static time_t lastchk = 0;
  42     struct stat sbuf;
  43     char   inbox[256], *p;
  44
  45     if((p = (char *)getenv("MAIL")) != NULL)
  46       /* fix unsafe sprintf - noticed by petter wahlman <petter@bluezone.no> */
  47       snprintf(inbox, sizeof(inbox), "%s", p);
  48     else
  49       snprintf(inbox, sizeof(inbox), "%s/%s", MAILDIR, (char *) getlogin());
  50
  51     if(our_stat(inbox, &sbuf) == 0){
  52         ret = sbuf.st_atime <= sbuf.st_mtime &&
  53           (lastchk < sbuf.st_mtime && lastchk < sbuf.st_atime);
  54         lastchk = sbuf.st_mtime;
  55         return(ret);
  56     }
  57     else
  58       return(ret);
  59 #else /* _WINDOWS */
  60     return(0);
  61 #endif
  62 }