src/acls.h

   1 /* Copyright (c) 1993-2002
   2  *      Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
   3  *      Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
   4  * Copyright (c) 1987 Oliver Laumann
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program (see the file COPYING); if not, see
  18  * http://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  20  *
  21  ****************************************************************
  22  */
  23
  24 #ifdef MULTIUSER
  25
  26 /* three known bits: */
  27 #define ACL_EXEC 0
  28 #define ACL_WRITE 1
  29 #define ACL_READ 2
  30
  31 #define ACL_BITS_PER_CMD 1      /* for comm.h */
  32 #define ACL_BITS_PER_WIN 3      /* for window.h */
  33
  34 #define USER_CHUNK 8
  35
  36 #define ACLBYTE(data, w)   ((data)[(w) >> 3])
  37 #define ACLBIT(w)   (0x80 >> ((w) & 7))
  38
  39 typedef unsigned char * AclBits;
  40
  41 /*
  42  * How a user joins a group.
  43  * Here is the node to construct one list per user.
  44  */
  45 struct aclusergroup
  46 {
  47   struct acluser *u;    /* the user who borrows us his rights */
  48   struct aclusergroup *next;
  49 };
  50 #endif /* MULTIUSER */
  51
  52 /***************
  53  *  ==> user.h
  54  */
  55
  56 /*
  57  * a copy buffer
  58  */
  59 struct plop
  60 {
  61   char *buf;
  62   int len;
  63 #ifdef ENCODINGS
  64   int enc;
  65 #endif
  66 };
  67
  68 /*
  69  * A User has a list of groups, and points to other users.
  70  * users is the User entry of the session owner (creator)
  71  * and anchors all other users. Add/Delete users there.
  72  */
  73 typedef struct acluser
  74 {
  75   struct acluser *u_next;               /* continue the main user list */
  76   char u_name[20+1];            /* login name how he showed up */
  77   char *u_password;             /* his password (may be NullStr). */
  78   int  u_checkpassword;         /* nonzero if this u_password is valid */
  79   int  u_detachwin;             /* the window where he last detached */
  80   int  u_detachotherwin;        /* window that was "other" when he detached */
  81   int  u_Esc, u_MetaEsc;        /* the users screen escape character */
  82 #ifdef COPY_PASTE
  83   struct plop u_plop;
  84 #endif
  85 #ifdef MULTIUSER
  86   int u_id;                     /* a uniq index in the bitfields. */
  87   AclBits u_umask_w_bits[ACL_BITS_PER_WIN];     /* his window create umask */
  88   struct aclusergroup *u_group; /* linked list of pointers to other users */
  89 #endif
  90 } User;
  91
  92 extern int DefaultEsc, DefaultMetaEsc;
  93