(get_map): Fixed a couple of fence errors.

(local_to_global): Using first_local_no==0 is an error.  Fixed a fence
	error.

src/server/text.c

 /*
- * $Id: text.c,v 0.52 1998/08/05 16:14:06 ceder Exp $
+ * $Id: text.c,v 0.53 1998/08/07 23:17:27 ceder Exp $
  * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996  Lysator Academic Computer Association.
  *
  * This file is part of the LysKOM server.
@@ -29,7 +29,7 @@
  */
 
 static const char *
-rcsid = "$Id: text.c,v 0.52 1998/08/05 16:14:06 ceder Exp $";
+rcsid = "$Id: text.c,v 0.53 1998/08/07 23:17:27 ceder Exp $";
 #include "rcs.h"
 USE(rcsid);
 
@@ -2982,14 +2982,15 @@ sub_footnote(	Text_no	footnote,	/* 'footnote' is no longer a  */
  * BUG: You should be allowed to get the mapping if it is a letterbox
  *	which is not unread_is_secret. +++ (Really? I don't think so. /ceder)
  */
-extern  Success
-get_map (Conf_no	 conf_no,
-	 Local_text_no	 first_local_no,
-	 unsigned long   no_of_texts,
-	 L2g_iterator_as_text_list * result)
+extern Success
+get_map(Conf_no	      conf_no,
+	Local_text_no first_local_no,
+	unsigned long no_of_texts,
+	L2g_iterator_as_text_list *result)
 {
     Conference  * conf_c;
-    Local_text_no highest_wanted_no, highest;
+    Local_text_no highest;
+    Local_text_no first_unwanted;
     Local_text_no res_first;
     int res_nr;
     Access acc;
@@ -2997,9 +2998,9 @@ get_map (Conf_no	 conf_no,
     CHK_LOGIN(FAILURE);
     GET_C_STAT(conf_c, conf_no, FAILURE);
 
-    acc = access_perm (conf_no, conf_c, ACTPERS, ACT_P);
+    acc = access_perm(conf_no, conf_c, ACTPERS, ACT_P);
 
-    if ( acc <= none )
+    if (acc <= none)
     {
         err_stat = conf_no;
 	kom_errno = KOM_UNDEF_CONF;
@@ -3015,7 +3016,7 @@ get_map (Conf_no	 conf_no,
     
     highest = l2g_first_appendable_key(&conf_c->texts) - 1;
     
-    if ( first_local_no >= highest )
+    if (first_local_no > highest)
     {
         err_stat = first_local_no;
 	kom_errno = KOM_NO_SUCH_LOCAL_TEXT;
@@ -3023,54 +3024,59 @@ get_map (Conf_no	 conf_no,
     }
 
     res_first = l2g_next_key(&conf_c->texts, 0);
+    /* Bug compatibility: accept first_local_no==0 because lyskomd
+       1.9.0 did so. */
+    res_first = max(res_first, 1);
     res_first = max(res_first, first_local_no);
-    highest_wanted_no = min(highest, first_local_no + no_of_texts);
+    first_unwanted = min(highest+1, first_local_no + no_of_texts);
 
-    if (highest_wanted_no >= res_first)
-	res_nr = highest_wanted_no - res_first;
+    if (first_unwanted >= res_first)
+	res_nr = first_unwanted - res_first;
     else
 	res_nr = 0;
 
-    l2gi_searchsome(result, &conf_c->texts,
-		    res_first, res_first + res_nr - 1);
+    l2gi_searchsome(result, &conf_c->texts, res_first, res_first + res_nr);
 
     return OK;
 }
 
-extern  Success
-local_to_global (Conf_no	 conf_no,
-		 Local_text_no	 first_local_no,
-		 unsigned long   no_of_texts,
-		 Text_mapping   *result)
+extern Success
+local_to_global(Conf_no	 conf_no,
+		Local_text_no	 first_local_no,
+		unsigned long   no_of_texts,
+		Text_mapping   *result)
 {
     Conference  * conf_c;
-    Local_text_no highest_wanted_no, highest;
     Local_text_no res_first;
-    int res_nr;
     Access acc;
-    
+
+    if (first_local_no == 0)
+    {
+	err_stat = first_local_no;
+	kom_errno = KOM_LOCAL_TEXT_ZERO;
+	return FAILURE;
+    }
+
     CHK_LOGIN(FAILURE);
     GET_C_STAT(conf_c, conf_no, FAILURE);
 
     acc = access_perm (conf_no, conf_c, ACTPERS, ACT_P);
 
-    if ( acc <= none )
+    if (acc <= none)
     {
         err_stat = conf_no;
 	kom_errno = KOM_UNDEF_CONF;
 	return FAILURE;
     }
 
-    if ( acc == read_protected )
+    if (acc == read_protected)
     {
         err_stat = conf_no;
 	kom_errno = KOM_ACCESS;
 	return FAILURE;
     }
-    
-    highest = l2g_first_appendable_key(&conf_c->texts) - 1;
-    
-    if ( first_local_no >= highest )
+
+    if (first_local_no >= l2g_first_appendable_key(&conf_c->texts))
     {
         err_stat = first_local_no;
 	kom_errno = KOM_NO_SUCH_LOCAL_TEXT;