--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/tooltalk.c	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,1565 @@
+/* Tooltalk support for Emacs.
+   Copyright (C) 1993, 1994 Sun Microsystems, Inc.
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: Not in FSF. */
+
+/* Written by John Rose <john.rose@eng.sun.com>.
+   Heavily modified and cleaned up by Ben Wing <ben.wing@eng.sun.com>. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include <X11/Xlib.h>
+#include <tt_c.h>
+
+#include "buffer.h"
+#include "elhash.h"
+#include "process.h"
+#include "tooltalk.h"
+
+Lisp_Object Vtooltalk_fd;
+
+#ifdef TT_DEBUG
+static FILE *tooltalk_log_file;
+#endif
+
+static Lisp_Object 
+  Vtooltalk_message_handler_hook,
+  Vtooltalk_pattern_handler_hook,
+  Vtooltalk_unprocessed_message_hook;
+
+static Lisp_Object
+  Qtooltalk_message_handler_hook,
+  Qtooltalk_pattern_handler_hook,
+  Qtooltalk_unprocessed_message_hook;
+
+static Lisp_Object 
+  Qreceive_tooltalk_message,
+  Qtt_address,
+  Qtt_args_count,
+  Qtt_arg_bval,
+  Qtt_arg_ival,
+  Qtt_arg_mode,
+  Qtt_arg_type,
+  Qtt_arg_val,
+  Qtt_class,
+  Qtt_category,
+  Qtt_disposition,
+  Qtt_file,
+  Qtt_gid,
+  Qtt_handler,
+  Qtt_handler_ptype,
+  Qtt_object,
+  Qtt_op,
+  Qtt_opnum,
+  Qtt_otype,
+  Qtt_scope,
+  Qtt_sender,
+  Qtt_sender_ptype,
+  Qtt_session,
+  Qtt_state,
+  Qtt_status,
+  Qtt_status_string,
+  Qtt_uid, 
+  Qtt_callback,
+  Qtt_plist,
+  Qtt_prop,
+
+  Qtt_reject,                /* return-tooltalk-message */
+  Qtt_reply,
+  Qtt_fail,
+
+  Q_TT_MODE_UNDEFINED,       /* enum Tt_mode */
+  Q_TT_IN,
+  Q_TT_OUT,
+  Q_TT_INOUT,
+  Q_TT_MODE_LAST,
+
+  Q_TT_SCOPE_NONE,            /* enum Tt_scope */
+  Q_TT_SESSION,
+  Q_TT_FILE,
+  Q_TT_BOTH,
+  Q_TT_FILE_IN_SESSION,
+
+  Q_TT_CLASS_UNDEFINED,       /* enum Tt_class */
+  Q_TT_NOTICE,
+  Q_TT_REQUEST,
+  Q_TT_CLASS_LAST,
+
+  Q_TT_CATEGORY_UNDEFINED,    /* enum Tt_category */
+  Q_TT_OBSERVE,
+  Q_TT_HANDLE,
+  Q_TT_CATEGORY_LAST,
+
+  Q_TT_PROCEDURE,             /* typedef enum Tt_address */
+  Q_TT_OBJECT,
+  Q_TT_HANDLER,
+  Q_TT_OTYPE,
+  Q_TT_ADDRESS_LAST,
+
+  Q_TT_CREATED,               /* enum Tt_state */
+  Q_TT_SENT,
+  Q_TT_HANDLED,
+  Q_TT_FAILED,
+  Q_TT_QUEUED,
+  Q_TT_STARTED,
+  Q_TT_REJECTED,
+  Q_TT_STATE_LAST,
+
+  Q_TT_DISCARD,              /* enum Tt_disposition */
+  Q_TT_QUEUE,
+  Q_TT_START;
+
+static Lisp_Object Tooltalk_Message_plist_str, Tooltalk_Pattern_plist_str;
+
+Lisp_Object Qtooltalk_error;
+
+/* Used to GCPRO tooltalk message and pattern objects while
+   they're sitting inside of some active tooltalk message or pattern.
+   There may not be any other pointers to these objects. */
+Lisp_Object Vtooltalk_message_gcpro, Vtooltalk_pattern_gcpro;
+
+
+/*                                     */
+/* machinery for tooltalk-message type */
+/*                                     */
+
+Lisp_Object Qtooltalk_messagep;
+
+struct Lisp_Tooltalk_Message
+{
+  struct lcrecord_header header;
+  Lisp_Object plist_sym, callback;
+  Tt_message m;
+};
+
+static Lisp_Object mark_tooltalk_message (Lisp_Object, void (*) (Lisp_Object));
+static void print_tooltalk_message (Lisp_Object, Lisp_Object, int);
+DEFINE_LRECORD_IMPLEMENTATION ("tooltalk-message", tooltalk_message,
+                               mark_tooltalk_message, print_tooltalk_message, 
+                               0, 0, 0,
+			       struct Lisp_Tooltalk_Message);
+
+static Lisp_Object
+mark_tooltalk_message (Lisp_Object obj, void (*markobj) (Lisp_Object))
+{
+  (markobj) (XTOOLTALK_MESSAGE (obj)->callback);
+  return XTOOLTALK_MESSAGE (obj)->plist_sym;
+}
+
+static void
+print_tooltalk_message (Lisp_Object obj, Lisp_Object printcharfun,
+			int escapeflag)
+{
+  struct Lisp_Tooltalk_Message *p = XTOOLTALK_MESSAGE (obj);
+  
+  char buf[200];
+
+  if (print_readably)
+    error ("printing unreadable object #<tooltalk_message 0x%x>",
+	   p->header.uid);
+
+  sprintf (buf, "#<tooltalk_message id:%d 0x%x>", (int) p->m, p->header.uid);
+  write_c_string (buf, printcharfun);
+}
+
+static Lisp_Object
+make_tooltalk_message (Tt_message m)
+{
+  struct Lisp_Tooltalk_Message *msg
+    = alloc_lcrecord (sizeof (struct Lisp_Tooltalk_Message),
+		      lrecord_tooltalk_message);
+  Lisp_Object val;
+
+  msg->m = m;
+  msg->callback = Qnil;
+  msg->plist_sym = Fmake_symbol (Tooltalk_Message_plist_str);
+  XSETTOOLTALK_MESSAGE (val, msg);
+  return val;
+}
+
+Tt_message
+unbox_tooltalk_message (Lisp_Object message)
+{
+  CHECK_TOOLTALK_MESSAGE (message);
+  return XTOOLTALK_MESSAGE (message)->m;
+}
+
+DEFUN ("tooltalk-message-p", Ftooltalk_message_p, Stooltalk_message_p, 1, 1, 0 /*
+Return non-nil if OBJECT is a tooltalk message.
+*/ )
+  (object)
+  Lisp_Object object;
+{
+  return (TOOLTALK_MESSAGEP (object) ? Qt : Qnil);
+}
+
+
+
+
+/*                                     */
+/* machinery for tooltalk-pattern type */
+/*                                     */
+
+Lisp_Object Qtooltalk_patternp;
+
+struct Lisp_Tooltalk_Pattern
+{
+  struct lcrecord_header header;
+  Lisp_Object plist_sym, callback;
+  Tt_pattern p;
+};
+
+static Lisp_Object mark_tooltalk_pattern (Lisp_Object, void (*) (Lisp_Object));
+static void print_tooltalk_pattern (Lisp_Object, Lisp_Object, int);
+DEFINE_LRECORD_IMPLEMENTATION ("tooltalk-pattern", tooltalk_pattern,
+                               mark_tooltalk_pattern, print_tooltalk_pattern, 
+                               0, 0, 0,
+			       struct Lisp_Tooltalk_Pattern);
+
+static Lisp_Object
+mark_tooltalk_pattern (Lisp_Object obj, void (*markobj) (Lisp_Object))
+{
+  (markobj) (XTOOLTALK_PATTERN (obj)->callback);
+  return XTOOLTALK_PATTERN (obj)->plist_sym;
+}
+
+static void
+print_tooltalk_pattern (Lisp_Object obj, Lisp_Object printcharfun,
+			int escapeflag)
+{
+  struct Lisp_Tooltalk_Pattern *p = XTOOLTALK_PATTERN (obj);
+  
+  char buf[200];
+
+  if (print_readably)
+    error ("printing unreadable object #<tooltalk_pattern 0x%x>",
+	   p->header.uid);
+
+  sprintf (buf, "#<tooltalk_pattern id:%d 0x%x>", (int) p->p, p->header.uid);
+  write_c_string (buf, printcharfun);
+}
+
+static Lisp_Object
+make_tooltalk_pattern (Tt_pattern p)
+{
+  struct Lisp_Tooltalk_Pattern *pat
+    = alloc_lcrecord (sizeof (struct Lisp_Tooltalk_Pattern),
+		      lrecord_tooltalk_pattern);
+  Lisp_Object val;
+
+  pat->p = p;
+  pat->callback = Qnil;
+  pat->plist_sym = Fmake_symbol (Tooltalk_Pattern_plist_str);
+  
+  XSETTOOLTALK_PATTERN (val, pat);
+  return val;
+}
+
+static Tt_pattern
+unbox_tooltalk_pattern (Lisp_Object pattern)
+{
+  CHECK_TOOLTALK_PATTERN (pattern);
+  return XTOOLTALK_PATTERN (pattern)->p;
+}
+
+DEFUN ("tooltalk-pattern-p", Ftooltalk_pattern_p, Stooltalk_pattern_p, 1, 1, 0 /*
+Return non-nil if OBJECT is a tooltalk pattern.
+*/ )
+  (object)
+  Lisp_Object object;
+{
+  return (TOOLTALK_PATTERNP (object) ? Qt : Qnil);
+}
+
+
+
+
+static int 
+tooltalk_constant_value (Lisp_Object s)
+{
+  if (INTP (s))
+    return XINT (s);
+  else if (SYMBOLP (s))
+    return XINT (XSYMBOL (s)->value);
+  else
+    return 0;   /* should never occur */
+}
+
+static void
+check_status (Tt_status st)
+{
+  if (tt_is_err (st))
+    signal_error (Qtooltalk_error,
+		  Fcons (build_string (tt_status_message (st)), Qnil));
+}
+
+DEFUN ("receive-tooltalk-message", 
+       Freceive_tooltalk_message, 
+       Sreceive_tooltalk_message, 
+       0, 2, 0 /*
+Run tt_message_receive().
+This function is the process handler for the ToolTalk connection process.
+*/ )
+    (ignore1, ignore2)
+    Lisp_Object ignore1, ignore2; /* filters are called with two arguments. */
+{
+  /* This function can GC */
+  Tt_message mess = tt_message_receive ();
+  Lisp_Object message = make_tooltalk_message (mess);
+  struct gcpro gcpro1;
+
+  GCPRO1 (message);
+  if (mess != NULL && !NILP (Vtooltalk_unprocessed_message_hook))
+    va_run_hook_with_args (Qtooltalk_unprocessed_message_hook, 1,
+			   message);
+  UNGCPRO;
+
+  /* see comment in event-stream.c about this return value. */
+  return make_int (0);
+}
+
+static Tt_callback_action
+tooltalk_message_callback (Tt_message m, Tt_pattern p)
+{
+  /* This function can GC */
+  Lisp_Object cb;
+  Lisp_Object message;
+  Lisp_Object pattern;
+  struct gcpro gcpro1, gcpro2;
+
+#ifdef TT_DEBUG
+  int i, j;
+
+  fprintf (tooltalk_log_file, "message_cb: %d\n", m);
+  fprintf (tooltalk_log_file, "op: %s (", tt_message_op (m));
+  for (j = tt_message_args_count (m), i = 0; i < j; i++) {
+    fprintf (tooltalk_log_file, "%s \"%s\"", tt_message_arg_type (m, i),
+	    tt_message_arg_val (m, i));
+    fprintf (tooltalk_log_file, "%s", i == j-1 ? ")" : ", ");
+  }
+  fprintf (tooltalk_log_file, "\n\n");
+  fflush (tooltalk_log_file);
+#endif
+
+  VOID_TO_LISP (message, tt_message_user (m, TOOLTALK_MESSAGE_KEY));
+  pattern = make_tooltalk_pattern (p);
+  cb = XTOOLTALK_MESSAGE (message)->callback;
+  GCPRO2 (message, pattern);
+  if (!NILP (Vtooltalk_message_handler_hook))
+    va_run_hook_with_args (Qtooltalk_message_handler_hook, 2, message,
+			   pattern);
+
+  if ((SYMBOLP (cb) && EQ (Qt, Ffboundp (cb))) ||
+      (CONSP (cb) && EQ (Qlambda, Fcar (cb)) &&
+       !NILP (Flistp (Fcar (Fcdr (cb))))))
+    call2 (cb, message, pattern);
+  UNGCPRO;
+
+  tt_message_destroy (m);
+  Fremhash (message, Vtooltalk_message_gcpro);
+
+  return TT_CALLBACK_PROCESSED;
+}
+
+static Tt_callback_action
+tooltalk_pattern_callback (Tt_message m, Tt_pattern p)
+{
+  /* This function can GC */
+  Lisp_Object cb;
+  Lisp_Object message;
+  Lisp_Object pattern;
+  struct gcpro gcpro1, gcpro2;
+
+#ifdef TT_DEBUG
+  int i, j;
+
+  fprintf (tooltalk_log_file, "pattern_cb: %d\n", m);
+  fprintf (tooltalk_log_file, "op: %s (", tt_message_op (m));
+  for (j = tt_message_args_count (m), i = 0; i < j; i++) {
+    fprintf (tooltalk_log_file, "%s \"%s\"", tt_message_arg_type (m, i),
+	    tt_message_arg_val (m, i));
+    fprintf (tooltalk_log_file, "%s", i == j-1 ? ")" : ", ");
+  }
+  fprintf (tooltalk_log_file, "\n\n");
+  fflush (tooltalk_log_file);
+#endif
+
+  message = make_tooltalk_message (m);
+  VOID_TO_LISP (pattern, tt_pattern_user (p, TOOLTALK_PATTERN_KEY));
+  cb = XTOOLTALK_PATTERN (pattern)->callback;
+  GCPRO2 (message, pattern);
+  if (!NILP (Vtooltalk_pattern_handler_hook))
+    va_run_hook_with_args (Qtooltalk_pattern_handler_hook, 2, message,
+			   pattern);
+
+  if (SYMBOLP (cb) && EQ (Qt, Ffboundp (cb)))
+    call2 (cb, message, pattern);
+  UNGCPRO;
+
+  tt_message_destroy (m);
+  return TT_CALLBACK_PROCESSED;
+}
+
+static Lisp_Object
+tt_mode_symbol (Tt_mode n)
+{
+  switch (n)
+    {
+    case TT_MODE_UNDEFINED:             return Q_TT_MODE_UNDEFINED;
+    case TT_IN:                         return Q_TT_IN;			
+    case TT_OUT:                        return Q_TT_OUT;
+    case TT_INOUT:                      return Q_TT_INOUT;
+    case TT_MODE_LAST:                  return Q_TT_MODE_LAST;
+    default:                            return Qnil;
+    }
+}
+
+static Lisp_Object 
+tt_scope_symbol (Tt_scope n)
+{
+  switch (n)
+    {
+    case TT_SCOPE_NONE:                 return Q_TT_SCOPE_NONE;
+    case TT_SESSION:                    return Q_TT_SESSION;
+    case TT_FILE:                       return Q_TT_FILE;
+    case TT_BOTH:                       return Q_TT_BOTH;
+    case TT_FILE_IN_SESSION:            return Q_TT_FILE_IN_SESSION;
+    default:                            return Qnil;
+    }
+}
+
+
+static Lisp_Object
+tt_class_symbol (Tt_class n)
+{
+  switch (n)
+    {
+    case TT_CLASS_UNDEFINED:            return Q_TT_CLASS_UNDEFINED;
+    case TT_NOTICE:                     return Q_TT_NOTICE;
+    case TT_REQUEST:                    return Q_TT_REQUEST;
+    case TT_CLASS_LAST:                 return Q_TT_CLASS_LAST;
+    default:                            return Qnil;
+    }
+}
+
+/*
+ * This is not being used.  Is that a mistake or is this function
+ * simply not necessary?
+ */
+#if 0
+static Lisp_Object
+tt_category_symbol (Tt_category n)
+{
+  switch (n)
+    {
+    case TT_CATEGORY_UNDEFINED:         return Q_TT_CATEGORY_UNDEFINED;
+    case TT_OBSERVE:                    return Q_TT_OBSERVE;
+    case TT_HANDLE:                     return Q_TT_HANDLE;
+    case TT_CATEGORY_LAST:              return Q_TT_CATEGORY_LAST;
+    default:                            return Qnil;
+    }
+}
+#endif /* 0 */
+
+static Lisp_Object
+tt_address_symbol (Tt_address n)
+{
+  switch (n)
+    {
+    case TT_PROCEDURE:                  return Q_TT_PROCEDURE;
+    case TT_OBJECT:                     return Q_TT_OBJECT;
+    case TT_HANDLER:                    return Q_TT_HANDLER;
+    case TT_OTYPE:                      return Q_TT_OTYPE;
+    case TT_ADDRESS_LAST:               return Q_TT_ADDRESS_LAST;
+    default:                            return Qnil;
+    }
+}
+
+static Lisp_Object
+tt_state_symbol (Tt_state n)
+{
+  switch (n)
+    {
+    case TT_CREATED:                    return Q_TT_CREATED;
+    case TT_SENT:                       return Q_TT_SENT;
+    case TT_HANDLED:                    return Q_TT_HANDLED;
+    case TT_FAILED:                     return Q_TT_FAILED;
+    case TT_QUEUED:                     return Q_TT_QUEUED;
+    case TT_STARTED:                    return Q_TT_STARTED;
+    case TT_REJECTED:                   return Q_TT_REJECTED;
+    case TT_STATE_LAST:                 return Q_TT_STATE_LAST;
+    default:                            return Qnil;
+    }
+}
+
+static Lisp_Object
+tt_build_string (char *s)
+{
+  return build_string ((s) ? s : "");
+}
+
+static Lisp_Object
+tt_opnum_string (int n)
+{
+  char buf[32];
+
+  sprintf (buf, "%u", n);
+  return build_string (buf);
+}
+
+static Lisp_Object
+tt_message_arg_ival_string (Tt_message m, int n)
+{
+  char buf[32];
+  int value;
+
+  check_status (tt_message_arg_ival (m, n, &value));
+  sprintf (buf, "%d", value);
+  return build_string (buf);
+}
+
+static Lisp_Object
+tt_message_arg_bval_vector (Tt_message m, int n)
+{
+  /* !!#### This function has not been Mule-ized */
+  Bufbyte *value;
+  int len = 0;
+
+  check_status (tt_message_arg_bval (m, n, &value, &len));
+
+  return make_string (value, len);
+}
+
+DEFUN ("get-tooltalk-message-attribute", 
+       Fget_tooltalk_message_attribute, 
+       Sget_tooltalk_message_attribute, 
+       2, 3, 0 /*
+Return the indicated Tooltalk message attribute.  Attributes are
+identified by symbols with the same name (underscores and all) as the
+suffix of the Tooltalk tt_message_<attribute> function that extracts the value.
+String attribute values are copied, enumerated type values (except disposition)
+are converted to symbols - e.g. TT_HANDLER is 'TT_HANDLER, uid and gid are 
+represented by fixnums (small integers), opnum is converted to a string,
+and disposition is converted to a fixnum.  We convert opnum (a C int) to a 
+string, e.g. 123 => \"123\" because there's no guarantee that opnums will fit
+within the range of Lisp integers.
+
+Use the 'plist attribute instead of the C API 'user attribute
+for user defined message data.  To retrieve the value of a message property
+specify the indicator for argn.  For example to get the value of a property
+called 'rflag, use
+   (get-tooltalk-message-attribute message 'plist 'rflag)
+
+To get the value of a message argument use one of the 'arg_val (strings),
+'arg_ival (integers), or 'arg_bval (strings with embedded nulls), attributes.
+For example to get the integer value of the third argument:
+
+   (get-tooltalk-message-attribute message 'arg_ival 2)
+
+As you can see, argument numbers are zero based.  The type of each argument
+can be retrieved with the 'arg_type attribute; however, Tooltalk doesn't
+define any semantics for the string value of 'arg_type.  Conventionally
+\"string\" is used for strings and \"int\" for 32 bit integers.  Note that
+Emacs Lisp stores the lengths of strings explicitly (unlike C) so treating the
+value returned by 'arg_bval like a string is fine.
+*/ )
+    (message, attribute, argn)
+    Lisp_Object message;
+    Lisp_Object attribute;
+    Lisp_Object argn;
+{
+  Tt_message m = unbox_tooltalk_message (message);
+  int n = 0;
+
+  CHECK_SYMBOL (attribute);
+  if (EQ (attribute, (Qtt_arg_bval))  || 
+      EQ (attribute, (Qtt_arg_ival))  || 
+      EQ (attribute, (Qtt_arg_mode))  || 
+      EQ (attribute, (Qtt_arg_type))  || 
+      EQ (attribute, (Qtt_arg_val)))
+    {
+      CHECK_INT (argn);
+      n = XINT (argn);
+    }
+
+  if (!VALID_TOOLTALK_MESSAGEP (m))
+    return Qnil;
+
+  else if (EQ (attribute, Qtt_arg_bval))
+    return tt_message_arg_bval_vector (m, n);
+
+  else if (EQ (attribute, Qtt_arg_ival))
+    return tt_message_arg_ival_string (m, n);
+
+  else if (EQ (attribute, Qtt_arg_mode))
+    return tt_mode_symbol (tt_message_arg_mode (m, n));
+
+  else if (EQ (attribute, Qtt_arg_type))
+    return tt_build_string (tt_message_arg_type (m, n));
+
+  else if (EQ (attribute, Qtt_arg_val))
+    return tt_message_arg_bval_vector (m, n);
+
+  else if (EQ (attribute, Qtt_args_count))
+    return make_int (tt_message_args_count (m));
+
+  else if (EQ (attribute, Qtt_address))
+    return tt_address_symbol (tt_message_address (m));
+
+  else if (EQ (attribute, Qtt_class))
+    return tt_class_symbol (tt_message_class (m));
+
+  else if (EQ (attribute, Qtt_disposition))
+    return make_int (tt_message_disposition (m));
+
+  else if (EQ (attribute, Qtt_file))
+    return tt_build_string (tt_message_file (m));
+
+  else if (EQ (attribute, Qtt_gid))
+    return make_int (tt_message_gid (m));
+
+  else if (EQ (attribute, Qtt_handler))
+    return tt_build_string (tt_message_handler (m));
+
+  else if (EQ (attribute, Qtt_handler_ptype))
+    return tt_build_string (tt_message_handler_ptype (m));
+
+  else if (EQ (attribute, Qtt_object))
+    return tt_build_string (tt_message_object (m));
+
+  else if (EQ (attribute, Qtt_op))
+    return tt_build_string (tt_message_op (m));
+
+  else if (EQ (attribute, Qtt_opnum))
+    return tt_opnum_string (tt_message_opnum (m));
+
+  else if (EQ (attribute, Qtt_otype))
+    return tt_build_string (tt_message_otype (m));
+
+  else if (EQ (attribute, Qtt_scope))
+    return tt_scope_symbol (tt_message_scope (m));
+
+  else if (EQ (attribute, Qtt_sender))
+    return tt_build_string (tt_message_sender (m));
+
+  else if (EQ (attribute, Qtt_sender_ptype))
+    return tt_build_string (tt_message_sender_ptype (m));
+
+  else if (EQ (attribute, Qtt_session))
+    return tt_build_string (tt_message_session (m));
+
+  else if (EQ (attribute, Qtt_state))
+    return tt_state_symbol (tt_message_state (m));
+
+  else if (EQ (attribute, Qtt_status))
+    return make_int (tt_message_status (m));
+
+  else if (EQ (attribute, Qtt_status_string))
+    return tt_build_string (tt_message_status_string (m));
+
+  else if (EQ (attribute, Qtt_uid))
+    return make_int (tt_message_uid (m));
+  
+  else if (EQ (attribute, Qtt_callback))
+    return XTOOLTALK_MESSAGE (message)->callback;
+
+  else if (EQ (attribute, Qtt_prop))
+    return Fget (XTOOLTALK_MESSAGE (message)->plist_sym, argn, Qnil);
+
+  else if (EQ (attribute, Qtt_plist))
+    return Fcopy_sequence (Fsymbol_plist (XTOOLTALK_MESSAGE (message)->
+					  plist_sym));
+
+  else
+    signal_simple_error ("invalid value for `get-tooltalk-message-attribute'",
+			 attribute);
+
+  return Qnil;
+}
+
+DEFUN ("set-tooltalk-message-attribute", 
+       Fset_tooltalk_message_attribute, 
+       Sset_tooltalk_message_attribute, 
+       3, 4, 0 /*
+Initialize one Tooltalk message attribute.
+
+Attribute names and values are the same as for
+`get-tooltalk-message-attribute'.  A property list is provided for user
+data (instead of the 'user message attribute); see
+`get-tooltalk-message-attribute'.
+
+The value of callback should be the name of a function of one argument.
+It will be applied to the message and matching pattern each time the state of the
+message changes.  This is usually used to notice when the messages state has
+changed to TT_HANDLED (or TT_FAILED), so that reply argument values
+can be used.
+
+If one of the argument attributes is specified, 'arg_val, 'arg_ival, or
+'arg_bval then argn must be the number of an already created argument.
+New arguments can be added to a message with add-tooltalk-message-arg.
+*/ )
+    (value, message, attribute, argn)
+    Lisp_Object value;
+    Lisp_Object message;
+    Lisp_Object attribute;
+    Lisp_Object argn;
+{
+  Tt_message m = unbox_tooltalk_message (message);
+  int n = 0;
+
+  CHECK_SYMBOL (attribute);
+  if (EQ (attribute, (Qtt_arg_bval))  || 
+      EQ (attribute, (Qtt_arg_ival))  || 
+      EQ (attribute, (Qtt_arg_val)))
+    {
+      CHECK_INT (argn);
+      n = XINT (argn);
+    }
+
+  if (!VALID_TOOLTALK_MESSAGEP (m))
+    return Qnil;
+
+  else if (EQ (attribute, Qtt_address))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_message_address_set (m, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_class))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_message_class_set (m, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_disposition))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_message_disposition_set (m, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_file))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_file_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_handler_ptype))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_handler_ptype_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_handler))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_handler_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_object))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_object_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_op))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_op_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_otype))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_otype_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_scope))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_message_scope_set (m, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_sender_ptype))
+    { 
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_sender_ptype_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_session))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_session_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_arg_bval))
+    {
+      Extbyte *value_ext;
+      Extcount value_ext_len;
+      CHECK_STRING (value);
+      GET_STRING_OS_DATA_ALLOCA (value, value_ext, value_ext_len);
+      tt_message_arg_bval_set (m, n, value_ext, value_ext_len);
+    }
+  else if (EQ (attribute, Qtt_arg_ival))
+    {
+      CHECK_INT (value);
+      tt_message_arg_ival_set (m, n, XINT (value));
+    }
+  else if (EQ (attribute, Qtt_arg_val))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_arg_val_set (m, n, value_ext);
+    }
+  else if (EQ (attribute, Qtt_status))
+    {
+      CHECK_INT (value);
+      tt_message_status_set (m, XINT (value));
+    }
+  else if (EQ (attribute, Qtt_status_string))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_message_status_string_set (m, value_ext);
+    }
+  else if (EQ (attribute, Qtt_callback))
+    {
+      CHECK_SYMBOL (value);
+      XTOOLTALK_MESSAGE (message)->callback = value;
+    }
+  else if (EQ (attribute, Qtt_prop))
+    {
+      return Fput (XTOOLTALK_MESSAGE (message)->plist_sym, argn, value);
+    }
+  else
+    signal_simple_error ("invalid value for `set-tooltalk-message-attribute'",
+			 attribute);
+  return Qnil;
+}
+
+DEFUN ("return-tooltalk-message", 
+       Freturn_tooltalk_message,
+       Sreturn_tooltalk_message,
+       1, 2, 0 /*
+Send a reply to this message.  The second argument can be
+'reply, 'reject or 'fail; the default is 'reply.  Before sending
+a reply all message arguments whose mode is TT_INOUT or TT_OUT should
+have been filled in - see set-tooltalk-message-attribute.
+*/ )
+    (message, mode)
+    Lisp_Object message, mode;
+{
+  Tt_message m = unbox_tooltalk_message (message);
+
+  if (NILP (mode))
+    mode = Qtt_reply;
+  else
+    CHECK_SYMBOL (mode);
+
+  if (!VALID_TOOLTALK_MESSAGEP (m))
+    return Qnil;
+  else if (EQ (mode, Qtt_reply))
+    tt_message_reply (m);
+  else if (EQ (mode, Qtt_reject))
+    tt_message_reject (m);
+  else if (EQ (mode, Qtt_fail))
+    tt_message_fail (m);
+
+  return Qnil;
+}
+
+DEFUN ("create-tooltalk-message",
+       Fcreate_tooltalk_message, 
+       Screate_tooltalk_message, 
+       0, 1, 0 /*
+Create a new tooltalk message.
+The messages session attribute is initialized to the default session.
+Other attributes can be initialized with `set-tooltalk-message-attribute'.
+`make-tooltalk-message' is the preferred to create and initialize a message.
+
+Optional arg NO-CALLBACK says don't add a C-level callback at all.
+Normally don't do that; just don't specify the Lisp callback when
+calling `make-tooltalk-message'.
+*/ )
+    (no_callback)
+    Lisp_Object no_callback;
+{
+  Tt_message m = tt_message_create ();
+  Lisp_Object message = make_tooltalk_message (m);
+  if (NILP (no_callback))
+    {
+      tt_message_callback_add (m, tooltalk_message_callback);
+    }
+  tt_message_session_set (m, tt_default_session ());
+  tt_message_user_set (m, TOOLTALK_MESSAGE_KEY, LISP_TO_VOID (message));
+  return message;
+}
+
+DEFUN ("destroy-tooltalk-message",
+       Fdestroy_tooltalk_message, 
+       Sdestroy_tooltalk_message, 
+       1, 1, 0 /*
+Apply tt_message_destroy() to the message.
+It's not necessary to destroy messages after they've been processed by
+a message or pattern callback; the Lisp/Tooltalk callback machinery does
+this for you.
+*/ )
+     (message)
+     Lisp_Object message;
+{
+  Tt_message m = unbox_tooltalk_message (message);
+
+  if (VALID_TOOLTALK_MESSAGEP (m))
+    /* #### Should we call Fremhash() here?  It seems that
+       a common paradigm is
+
+       (send-tooltalk-message)
+       (destroy-tooltalk-message)
+
+       which would imply that destroying a sent ToolTalk message
+       doesn't actually destroy it; when a response is sent back,
+       the callback for the message will still be called.
+
+       But then maybe not: Maybe it really does destroy it,
+       and the reason for that paradigm is that the author
+       of `send-tooltalk-message' didn't really know what he
+       was talking about when he said that it's a good idea
+       to call `destroy-tooltalk-message' after sending it. */
+    tt_message_destroy (m);
+
+  return Qnil;
+}
+
+
+DEFUN ("add-tooltalk-message-arg",
+       Fadd_tooltalk_message_arg, 
+       Sadd_tooltalk_message_arg, 
+       3, 4, 0 /*
+Append one new argument to the message.
+MODE must be one of TT_IN, TT_INOUT, or TT_OUT; VTYPE must be a string;
+and VALUE can be a string or an integer.   Tooltalk doesn't
+define any semantics for VTYPE, so only the participants in the
+protocol you're using need to agree what types mean (if anything).
+Conventionally \"string\" is used for strings and \"int\" for 32 bit integers.
+Arguments can initialized by providing a value or with
+`set-tooltalk-message-attribute'.  The latter is neccessary if you
+want to initialize the argument with a string that can contain
+embedded nulls (use 'arg_bval).
+*/ )
+     (message, mode, vtype, value)
+     Lisp_Object message, mode, vtype, value;
+{
+  Tt_message m = unbox_tooltalk_message (message);
+  Tt_mode n;
+
+  CHECK_STRING (vtype);
+  CHECK_TOOLTALK_CONSTANT (mode);
+
+  n = tooltalk_constant_value (mode);
+
+  if (!VALID_TOOLTALK_MESSAGEP (m))
+    return Qnil;
+  {
+    CONST char *vtype_ext;
+
+    GET_C_STRING_OS_DATA_ALLOCA (vtype, vtype_ext);
+    if (NILP (value))
+      tt_message_arg_add (m, n, vtype_ext, NULL);
+    else if (STRINGP (value))
+      {
+	CONST char *value_ext;
+	GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+	tt_message_arg_add (m, n, vtype_ext, value_ext);
+      }
+    else if (INTP (value))
+      tt_message_iarg_add (m, n, vtype_ext, XINT (value));
+  }
+
+  return Qnil;
+}
+
+DEFUN ("send-tooltalk-message",
+       Fsend_tooltalk_message, 
+       Ssend_tooltalk_message, 
+       1, 1, 0 /*
+Send the message on its way.
+Once the message has been sent it's almost always a good idea to get rid of
+it with `destroy-tooltalk-message'.
+*/ )
+     (message)
+     Lisp_Object message;
+{
+  Tt_message m = unbox_tooltalk_message (message);
+
+  if (VALID_TOOLTALK_MESSAGEP (m))
+    {
+      tt_message_send (m);
+      Fputhash (message, Qnil, Vtooltalk_message_gcpro);
+    }
+
+  return Qnil;
+}
+
+DEFUN ("create-tooltalk-pattern",
+       Fcreate_tooltalk_pattern, 
+       Screate_tooltalk_pattern, 
+       0, 0, 0 /*
+Create a new Tooltalk pattern.
+Its session attribute is initialized to be the default session.
+*/ )
+    ()
+{
+  Tt_pattern p = tt_pattern_create ();
+  Lisp_Object pattern = make_tooltalk_pattern (p);
+
+  tt_pattern_callback_add (p, tooltalk_pattern_callback);
+  tt_pattern_session_add (p, tt_default_session ());
+  tt_pattern_user_set (p, TOOLTALK_PATTERN_KEY, LISP_TO_VOID (pattern));
+
+  return pattern;
+}
+
+
+DEFUN ("destroy-tooltalk-pattern",
+       Fdestroy_tooltalk_pattern, 
+       Sdestroy_tooltalk_pattern, 
+       1, 1, 0 /*
+Apply tt_pattern_destroy() to the pattern.
+This effectively unregisters the pattern.
+*/ )
+     (pattern)
+     Lisp_Object pattern;
+{
+  Tt_pattern p = unbox_tooltalk_pattern (pattern);
+
+  if (VALID_TOOLTALK_PATTERNP (p))
+    {
+      tt_pattern_destroy (p);
+      Fremhash (pattern, Vtooltalk_pattern_gcpro);
+    }
+
+  return Qnil;
+}
+
+
+DEFUN ("add-tooltalk-pattern-attribute", 
+       Fadd_tooltalk_pattern_attribute, 
+       Sadd_tooltalk_pattern_attribute, 
+       3, 3, 0 /*
+Add one value to the indicated pattern attribute.
+All Tooltalk pattern attributes are supported except 'user.  The names
+of attributes are the same as the Tooltalk accessors used to set them
+less the \"tooltalk_pattern_\" prefix and the \"_add\" ...
+*/ )
+    (value, pattern, attribute)
+    Lisp_Object value;
+    Lisp_Object pattern;
+    Lisp_Object attribute;
+{
+  Tt_pattern p = unbox_tooltalk_pattern (pattern);
+
+  CHECK_SYMBOL (attribute);
+
+  if (!VALID_TOOLTALK_PATTERNP (p))
+    return Qnil;
+
+  else if (EQ (attribute, Qtt_category))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_pattern_category_set (p, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_address))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_pattern_address_add (p, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_class))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_pattern_class_add (p, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_disposition))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_pattern_disposition_add (p, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_file))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_pattern_file_add (p, value_ext);
+    }
+  else if (EQ (attribute, Qtt_object))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_pattern_object_add (p, value_ext);
+    }
+  else if (EQ (attribute, Qtt_op))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_pattern_op_add (p, value_ext);
+    }
+  else if (EQ (attribute, Qtt_otype))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_pattern_otype_add (p, value_ext);
+    }
+  else if (EQ (attribute, Qtt_scope))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_pattern_scope_add (p, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_sender))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_pattern_sender_add (p, value_ext);
+    }
+  else if (EQ (attribute, Qtt_sender_ptype))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_pattern_sender_ptype_add (p, value_ext);
+    }
+  else if (EQ (attribute, Qtt_session))
+    {
+      CONST char *value_ext;
+      CHECK_STRING (value);
+      GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+      tt_pattern_session_add (p, value_ext);
+    }
+  else if (EQ (attribute, Qtt_state))
+    {
+      CHECK_TOOLTALK_CONSTANT (value);
+      tt_pattern_state_add (p, tooltalk_constant_value (value));
+    }
+  else if (EQ (attribute, Qtt_callback))
+    {
+      CHECK_SYMBOL (value);
+      XTOOLTALK_PATTERN (pattern)->callback = value;
+    }
+
+  return Qnil;
+}
+
+
+DEFUN ("add-tooltalk-pattern-arg",
+       Fadd_tooltalk_pattern_arg, 
+       Sadd_tooltalk_pattern_arg, 
+       3, 4, 0 /*
+Add one fully specified argument to a tooltalk pattern.
+Mode must be one of TT_IN, TT_INOUT, or TT_OUT, type must be a string.
+Value can be an integer, string or nil.  If value is an integer then
+an integer argument (tt_pattern_iarg_add) added otherwise a string argument
+is added.  At present there's no way to add a binary data argument.
+*/ )
+     (pattern, mode, vtype, value)
+     Lisp_Object pattern, mode, vtype, value;
+{
+  Tt_pattern p = unbox_tooltalk_pattern (pattern);
+  Tt_mode n;
+
+  CHECK_STRING (vtype);
+  CHECK_TOOLTALK_CONSTANT (mode);
+
+  n = tooltalk_constant_value (mode);
+
+  if (!VALID_TOOLTALK_PATTERNP (p))
+    return Qnil;
+  {
+    CONST char *vtype_ext;
+
+    GET_C_STRING_OS_DATA_ALLOCA (vtype, vtype_ext);
+    if (NILP (value))
+      tt_pattern_arg_add (p, n, vtype_ext, NULL);
+    else if (STRINGP (value))
+      {
+	CONST char *value_ext;
+	GET_C_STRING_OS_DATA_ALLOCA (value, value_ext);
+	tt_pattern_arg_add (p, n, vtype_ext, value_ext);
+      }
+    else if (INTP (value))
+      tt_pattern_iarg_add (p, n, vtype_ext, XINT (value));
+  }
+
+  return Qnil;
+}
+
+
+DEFUN ("register-tooltalk-pattern",
+       Fregister_tooltalk_pattern, 
+       Sregister_tooltalk_pattern, 
+       1, 1, 0 /*
+Emacs will begin receiving messages that match this pattern.
+*/ )
+     (pattern)
+     Lisp_Object pattern;
+{
+  Tt_pattern p = unbox_tooltalk_pattern (pattern);
+
+  if (VALID_TOOLTALK_PATTERNP (p) && tt_pattern_register (p) == TT_OK)
+    {
+      Fputhash (pattern, Qnil, Vtooltalk_pattern_gcpro);
+      return Qt;
+    }
+  else
+    return Qnil;
+}
+
+
+DEFUN ("unregister-tooltalk-pattern",
+       Funregister_tooltalk_pattern, 
+       Sunregister_tooltalk_pattern, 
+       1, 1, 0 /*
+Emacs will stop receiving messages that match this pattern.
+*/ )
+     (pattern)
+     Lisp_Object pattern;
+{
+  Tt_pattern p = unbox_tooltalk_pattern (pattern);
+
+  if (VALID_TOOLTALK_PATTERNP (p))
+    {
+      tt_pattern_unregister (p);
+      Fremhash (pattern, Vtooltalk_pattern_gcpro);
+    }
+
+  return Qnil;
+}
+
+
+DEFUN ("tooltalk-pattern-prop-get",
+       Ftooltalk_pattern_prop_get,
+       Stooltalk_pattern_prop_get,
+       2, 2, 0 /*
+Return the value of PROPERTY in tooltalk pattern PATTERN.
+This is the last value set with `tooltalk-pattern-prop-set'.
+*/ )
+     (pattern, property)
+     Lisp_Object pattern, property;
+{
+  CHECK_TOOLTALK_PATTERN (pattern);
+  return Fget (XTOOLTALK_PATTERN (pattern)->plist_sym, property, Qnil);
+}
+
+
+DEFUN ("tooltalk-pattern-prop-set",
+       Ftooltalk_pattern_prop_set,
+       Stooltalk_pattern_prop_set,
+       3, 3, 0 /*
+Set the value of PROPERTY to VALUE in tooltalk pattern PATTERN.
+It can be retrieved with `tooltalk-pattern-prop-get'.
+*/ )
+     (pattern, property, value)
+     Lisp_Object pattern, property, value;
+{
+  CHECK_TOOLTALK_PATTERN (pattern);
+  return Fput (XTOOLTALK_PATTERN (pattern)->plist_sym, property, value);
+}
+
+
+DEFUN ("tooltalk-pattern-plist-get",
+       Ftooltalk_pattern_plist_get,
+       Stooltalk_pattern_plist_get,
+       1, 1, 0 /*
+Return the a list of all the properties currently set in PATTERN.
+*/ )
+     (pattern)
+     Lisp_Object pattern;
+{
+  CHECK_TOOLTALK_PATTERN (pattern);
+  return Fcopy_sequence
+    (Fsymbol_plist (XTOOLTALK_PATTERN (pattern)->plist_sym));
+}
+
+DEFUN ("tooltalk-default-procid", 
+       Ftooltalk_default_procid, 
+       Stooltalk_default_procid, 
+       0, 0, 0 /*
+Return current default process identifier for your process.
+*/ )
+    ()
+{
+  char *procid = tt_default_procid ();
+  if (!procid)
+    return Qnil;
+  return build_string (procid);
+}
+
+DEFUN ("tooltalk-default-session", 
+       Ftooltalk_default_session, 
+       Stooltalk_default_session, 
+       0, 0, 0 /*
+Return current default session identifier for the current default procid.
+*/ )
+    ()
+{
+  char *session = tt_default_session ();
+  if (!session)
+    return Qnil;
+  return build_string (session);
+}
+
+static void
+init_tooltalk (void)
+{
+  /* This function can GC */
+  char *retval;
+  Lisp_Object lp;
+  Lisp_Object fil;
+
+  retval = tt_open ();
+  if (tt_ptr_error (retval) != TT_OK)
+    return;
+    
+  Vtooltalk_fd = make_int (tt_fd ());
+
+  tt_session_join (tt_default_session ());
+
+  lp = connect_to_file_descriptor (build_string ("tooltalk"), Qnil,
+				   Vtooltalk_fd, Vtooltalk_fd);
+  if (!NILP (lp))
+    {
+      /* Don't ask the user for confirmation when exiting Emacs */
+      Fprocess_kill_without_query (lp, Qnil);
+      XSETSUBR (fil, &Sreceive_tooltalk_message);
+      set_process_filter (lp, fil, 1);
+    }
+  else
+    {
+      tt_close ();
+      Vtooltalk_fd = Qnil;
+      return;
+    }
+
+#if defined (SOLARIS2)
+  /* Apparently the tt_message_send_on_exit() function does not exist
+     under SunOS 4.x or IRIX 5 or various other non-Solaris-2 systems.
+     No big deal if we don't do the following under those systems. */
+  {
+    Tt_message exit_msg = tt_message_create ();
+    
+    tt_message_op_set (exit_msg, "emacs-aborted");
+    tt_message_scope_set (exit_msg, TT_SESSION);
+    tt_message_class_set (exit_msg, TT_NOTICE);
+    tt_message_send_on_exit (exit_msg);
+    tt_message_destroy (exit_msg);
+  }
+#endif
+}
+
+DEFUN ("tooltalk-open-connection",
+       Ftooltalk_open_connection, Stooltalk_open_connection,
+       0, 0, 0 /*
+Opens a connection to the ToolTalk server.
+Returns t if successful, nil otherwise.
+*/ )
+ 	()
+{
+  if (!NILP (Vtooltalk_fd))
+    error ("Already connected to ToolTalk.");
+  if (noninteractive)
+    error ("Can't connect to ToolTalk in batch mode.");
+  init_tooltalk ();
+  return (NILP (Vtooltalk_fd) ? Qnil : Qt);
+}
+
+
+void
+syms_of_tooltalk (void)
+{
+  defsymbol (&Qtooltalk_messagep, "tooltalk-message-p");
+  defsubr (&Stooltalk_message_p);
+  defsymbol (&Qtooltalk_patternp, "tooltalk-pattern-p");
+  defsubr (&Stooltalk_pattern_p);
+  defsymbol (&Qtooltalk_message_handler_hook, "tooltalk-message-handler-hook");
+  defsymbol (&Qtooltalk_pattern_handler_hook, "tooltalk-pattern-handler-hook");
+  defsymbol (&Qtooltalk_unprocessed_message_hook,
+	     "tooltalk-unprocessed-message-hook");
+
+  defsubr (&Sreceive_tooltalk_message);
+  defsubr (&Screate_tooltalk_message);
+  defsubr (&Sdestroy_tooltalk_message);
+  defsubr (&Sadd_tooltalk_message_arg);
+  defsubr (&Sget_tooltalk_message_attribute);
+  defsubr (&Sset_tooltalk_message_attribute);
+  defsubr (&Ssend_tooltalk_message);
+  defsubr (&Sreturn_tooltalk_message);
+  defsubr (&Screate_tooltalk_pattern);
+  defsubr (&Sdestroy_tooltalk_pattern);  
+  defsubr (&Sadd_tooltalk_pattern_attribute);  
+  defsubr (&Sadd_tooltalk_pattern_arg);  
+  defsubr (&Sregister_tooltalk_pattern);  
+  defsubr (&Sunregister_tooltalk_pattern);  
+  defsubr (&Stooltalk_pattern_plist_get);
+  defsubr (&Stooltalk_pattern_prop_set);
+  defsubr (&Stooltalk_pattern_prop_get);
+  defsubr (&Stooltalk_default_procid);
+  defsubr (&Stooltalk_default_session);
+  defsubr (&Stooltalk_open_connection);
+
+  defsymbol (&Qreceive_tooltalk_message, "receive-tooltalk-message");
+  defsymbol (&Qtt_address, "address");
+  defsymbol (&Qtt_args_count, "args_count");
+  defsymbol (&Qtt_arg_bval, "arg_bval");
+  defsymbol (&Qtt_arg_ival, "arg_ival");
+  defsymbol (&Qtt_arg_mode, "arg_mode");
+  defsymbol (&Qtt_arg_type, "arg_type");
+  defsymbol (&Qtt_arg_val, "arg_val");
+  defsymbol (&Qtt_class, "class");
+  defsymbol (&Qtt_category, "category");
+  defsymbol (&Qtt_disposition, "disposition");
+  defsymbol (&Qtt_file, "file");
+  defsymbol (&Qtt_gid, "gid");
+  defsymbol (&Qtt_handler, "handler");
+  defsymbol (&Qtt_handler_ptype, "handler_ptype");
+  defsymbol (&Qtt_object, "object");
+  defsymbol (&Qtt_op, "op");
+  defsymbol (&Qtt_opnum, "opnum");
+  defsymbol (&Qtt_otype, "otype");
+  defsymbol (&Qtt_scope, "scope");
+  defsymbol (&Qtt_sender, "sender");
+  defsymbol (&Qtt_sender_ptype, "sender_ptype");
+  defsymbol (&Qtt_session, "session");
+  defsymbol (&Qtt_state, "state");
+  defsymbol (&Qtt_status, "status");
+  defsymbol (&Qtt_status_string, "status_string");
+  defsymbol (&Qtt_uid, "uid");
+  defsymbol (&Qtt_callback, "callback");
+  defsymbol (&Qtt_prop, "prop");
+  defsymbol (&Qtt_plist, "plist");
+  defsymbol (&Qtt_reject, "reject");
+  defsymbol (&Qtt_reply, "reply");
+  defsymbol (&Qtt_fail, "fail");
+
+  deferror (&Qtooltalk_error, "tooltalk-error", "ToolTalk error", Qio_error);
+}
+
+void
+vars_of_tooltalk (void)
+{
+  Fprovide (intern ("tooltalk"));
+
+  DEFVAR_LISP ("tooltalk-fd", &Vtooltalk_fd /*
+File descriptor returned by tt_initialize; nil if not connected to ToolTalk.
+*/ );
+  Vtooltalk_fd = Qnil;
+
+  DEFVAR_LISP ("tooltalk-message-handler-hook", 
+	      &Vtooltalk_message_handler_hook /*
+List of functions to be applied to each ToolTalk message reply received.
+This will always occur as a result of our sending a request message.
+Functions will be called with two arguments, the message and the
+corresponding pattern.  This hook will not be called if the request
+message was created without a C-level callback function (see
+`tooltalk-unprocessed-message-hook').
+*/ );
+  Vtooltalk_message_handler_hook = Qnil;
+
+  DEFVAR_LISP ("tooltalk-pattern-handler-hook", 
+	      &Vtooltalk_pattern_handler_hook /*
+List of functions to be applied to each pattern-matching ToolTalk message.
+This is all messages except those handled by `tooltalk-message-handler-hook'.
+Functions will be called with two arguments, the message and the
+corresponding pattern.
+*/ );
+  Vtooltalk_pattern_handler_hook = Qnil;
+
+  DEFVAR_LISP ("tooltalk-unprocessed-message-hook",
+	      &Vtooltalk_unprocessed_message_hook /*
+List of functions to be applied to each unprocessed ToolTalk message.
+Unprocessed messages are messages that didn't match any patterns.
+*/ );
+  Vtooltalk_unprocessed_message_hook = Qnil;
+
+  Tooltalk_Message_plist_str = build_string ("Tooltalk Message plist");
+  Tooltalk_Pattern_plist_str = build_string ("Tooltalk Pattern plist");
+
+#define MAKE_CONSTANT(name) do { \
+    defsymbol (&Q_ ## name, #name); \
+    Fset (Q_ ## name, make_int (name)); \
+  } while (0)
+  
+  MAKE_CONSTANT (TT_MODE_UNDEFINED);
+  MAKE_CONSTANT (TT_IN);
+  MAKE_CONSTANT (TT_OUT);
+  MAKE_CONSTANT (TT_INOUT);
+  MAKE_CONSTANT (TT_MODE_LAST);
+
+  MAKE_CONSTANT (TT_SCOPE_NONE);
+  MAKE_CONSTANT (TT_SESSION);
+  MAKE_CONSTANT (TT_FILE);
+  MAKE_CONSTANT (TT_BOTH);
+  MAKE_CONSTANT (TT_FILE_IN_SESSION);
+
+  MAKE_CONSTANT (TT_CLASS_UNDEFINED);
+  MAKE_CONSTANT (TT_NOTICE);
+  MAKE_CONSTANT (TT_REQUEST);
+  MAKE_CONSTANT (TT_CLASS_LAST);
+
+  MAKE_CONSTANT (TT_CATEGORY_UNDEFINED);
+  MAKE_CONSTANT (TT_OBSERVE);
+  MAKE_CONSTANT (TT_HANDLE);
+  MAKE_CONSTANT (TT_CATEGORY_LAST);
+
+  MAKE_CONSTANT (TT_PROCEDURE);
+  MAKE_CONSTANT (TT_OBJECT);
+  MAKE_CONSTANT (TT_HANDLER);
+  MAKE_CONSTANT (TT_OTYPE);
+  MAKE_CONSTANT (TT_ADDRESS_LAST);
+
+  MAKE_CONSTANT (TT_CREATED);
+  MAKE_CONSTANT (TT_SENT);
+  MAKE_CONSTANT (TT_HANDLED);
+  MAKE_CONSTANT (TT_FAILED);
+  MAKE_CONSTANT (TT_QUEUED);
+  MAKE_CONSTANT (TT_STARTED);
+  MAKE_CONSTANT (TT_REJECTED);
+  MAKE_CONSTANT (TT_STATE_LAST);
+
+  MAKE_CONSTANT (TT_DISCARD);
+  MAKE_CONSTANT (TT_QUEUE);
+  MAKE_CONSTANT (TT_START);
+
+#undef MAKE_CONSTANT
+
+  staticpro (&Vtooltalk_message_gcpro);
+  staticpro (&Vtooltalk_pattern_gcpro);
+  Vtooltalk_message_gcpro = make_lisp_hashtable (10, HASHTABLE_NONWEAK,
+						 HASHTABLE_EQ);
+  Vtooltalk_pattern_gcpro = make_lisp_hashtable (10, HASHTABLE_NONWEAK,
+						 HASHTABLE_EQ);
+}