zephyr/clients/zpopnotify/zpopnotify.c

   1 /* This file is part of the Project Athena Zephyr Notification System.
   2  * It contains code for the "zpopnotify" command.
   3  *
   4  *      Created by:     Robert French
   5  *
   6  *      $Id$
   7  *
   8  *      Copyright (c) 1987,1988 by the Massachusetts Institute of Technology.
   9  *      For copying and distribution information, see the file
  10  *      "mit-copyright.h".
  11  */
  12
  13
  14 #include <sysdep.h>
  15 #include <zephyr/mit-copyright.h>
  16 #include <zephyr/zephyr.h>
  17 #include <stdio.h>
  18 #include <netdb.h>
  19 #include <string.h>
  20 #include <sys/param.h>                  /* for MAXHOSTNAMELEN */
  21 #include <com_err.h>
  22 #include <errno.h>
  23
  24 #ifndef lint
  25 static char rcsid_zpopnotify_c[] = "$Id$";
  26 #endif /* lint */
  27
  28 #define MAIL_CLASS "MAIL"
  29 #define MAIL_INSTANCE "POP"
  30
  31 void usage();
  32
  33 main(argc,argv)
  34         int argc;
  35         char *argv[];
  36 {
  37         ZNotice_t notice;
  38         struct hostent *hent;
  39         int retval;
  40         register int i;
  41         char *whoami,myhost[MAXHOSTNAMELEN],mysender[BUFSIZ];
  42         char *lines[2];
  43
  44         whoami = argv[0];
  45
  46         if ((retval = ZInitialize()) != ZERR_NONE) {
  47                 com_err(whoami,retval,"while initializing");
  48                 exit(1);
  49         }
  50
  51         if (argc < 2) {
  52                 usage(whoami);
  53                 exit(1);
  54         }
  55
  56         if (gethostname(myhost,MAXHOSTNAMELEN) == -1) {
  57                 com_err(whoami,errno,"Can't get hostname");
  58                 exit(1);
  59         }
  60         myhost[MAXHOSTNAMELEN-1] = '\0';
  61
  62         if (!(hent = gethostbyname(myhost))) {
  63                 com_err(whoami,errno,"Can't get canonical hostname");
  64                 exit(1);
  65         }
  66
  67         (void) strncpy(myhost,hent->h_name,MAXHOSTNAMELEN);
  68         myhost[MAXHOSTNAMELEN-1] = '\0';
  69
  70         lines[0] = myhost;
  71         lines[1] = "You have new mail.";
  72
  73         (void) strcpy(mysender,"pop@");
  74         (void) strcat(mysender,ZGetRealm());
  75
  76         for (i = 1; i < argc; i++) {
  77             (void) memset((char *)&notice, 0, sizeof(notice));
  78             notice.z_kind = UNSAFE;
  79             notice.z_class = MAIL_CLASS;
  80             notice.z_class_inst = MAIL_INSTANCE;
  81             notice.z_opcode = "";
  82             notice.z_sender = mysender;
  83             notice.z_default_format = "From Post Office $1:\n$2";
  84
  85             /* in case it's a mailbox name (pathname), strip to username */
  86             notice.z_recipient = (char *)strrchr(argv[i],'/');
  87             if (notice.z_recipient)
  88                 notice.z_recipient++;
  89             else
  90                 notice.z_recipient = argv[i];
  91
  92             if ((retval = ZSendList(&notice,lines,2,ZNOAUTH)) != ZERR_NONE) {
  93                 com_err(whoami,retval,"while sending notice");
  94                 exit(1);
  95             }
  96         }
  97 }
  98
  99 void
 100 usage(whoami)
 101         char *whoami;
 102 {
 103         printf("Usage: %s username [ username ... ]\n",whoami);
 104 }