libpurple/protocols/zephyr/ZGetSender.c

   1 /* This file is part of the Project Athena Zephyr Notification System.
   2  * It contains source for the ZGetSender.c function.
   3  *
   4  *      Created by:     Robert French
   5  *
   6  *      Copyright (c) 1987, 1991 by the Massachusetts Institute of Technology.
   7  *      For copying and distribution information, see the file
   8  *      "mit-copyright.h".
   9  */
  10
  11 #include "internal.h"
  12
  13 #ifndef WIN32
  14 #include <pwd.h>
  15 #endif
  16
  17 char *ZGetSender()
  18 {
  19         struct passwd *pw;
  20 #ifdef ZEPHYR_USES_KERBEROS
  21         char pname[ANAME_SZ];
  22         char pinst[INST_SZ];
  23         char prealm[REALM_SZ];
  24         static char sender[ANAME_SZ+INST_SZ+REALM_SZ+3] = "";
  25         long int kerror;
  26 #else
  27         static char sender[128] = "";
  28 #endif
  29
  30 #ifdef WIN32
  31         unsigned long sender_size = sizeof(sender) - 1;
  32 #endif
  33
  34 #ifdef ZEPHYR_USES_KERBEROS
  35         if ((kerror = krb_get_tf_fullname((char *)TKT_FILE, pname, pinst, prealm)) == KSUCCESS)
  36         {
  37                 sprintf(sender, "%s%s%s@%s", pname, (pinst[0] ? "." : ""), pinst, prealm);
  38                 return sender;
  39         }
  40 #endif
  41
  42 #ifdef WIN32
  43         GetUserName(sender, &sender_size);
  44 #else
  45         /* XXX a uid_t is a u_short (now),  but getpwuid
  46          * wants an int. AARGH! */
  47         pw = getpwuid((int) getuid());
  48         if (!pw)
  49                 return ("unknown");
  50         sprintf(sender, "%s@%s", pw->pw_name, __Zephyr_realm);
  51 #endif
  52         return sender;
  53 }