From 7648e9290bba72adceee320366a2fdd0d42ce8c6 Mon Sep 17 00:00:00 2001
From: Darkvater <Darkvater@openttd.org>
Date: Wed, 11 May 2005 12:46:19 +0000
Subject: (svn r2291) - Fix (regression): When a client joined it changed the
 server-player's name. Funny effect; but not desired. Thanks for pointing it
 out Tron. It needed a bit of hacking, but is not less of a hack than the one
 used before :)

---
 misc_cmd.c  | 18 +++++++-----------
 players.c   | 16 +++++++++++++---
 variables.h |  4 ++--
 3 files changed, 22 insertions(+), 16 deletions(-)

diff --git a/misc_cmd.c b/misc_cmd.c
index f27d78fa0..52f237ba2 100644
--- a/misc_cmd.c
+++ b/misc_cmd.c
@@ -126,7 +126,7 @@ int32 CmdDecreaseLoan(int x, int y, uint32 flags, uint32 p1, uint32 p2)
  */
 int32 CmdChangeCompanyName(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 {
-	StringID str,old_str;
+	StringID str;
 	Player *p;
 
 	str = AllocateNameUnique((const char*)_decode_parameters, 4);
@@ -134,13 +134,11 @@ int32 CmdChangeCompanyName(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 
 	if (flags & DC_EXEC) {
 		p = DEREF_PLAYER(_current_player);
-		old_str = p->name_1;
+		DeleteName(p->name_1);
 		p->name_1 = str;
-		DeleteName(old_str);
 		MarkWholeScreenDirty();
-	} else {
+	} else
 		DeleteName(str);
-	}
 
 	return 0;
 }
@@ -152,7 +150,7 @@ int32 CmdChangeCompanyName(int x, int y, uint32 flags, uint32 p1, uint32 p2)
  */
 int32 CmdChangePresidentName(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 {
-	StringID str,old_str;
+	StringID str;
 	Player *p;
 
 	str = AllocateNameUnique((const char*)_decode_parameters, 4);
@@ -160,18 +158,16 @@ int32 CmdChangePresidentName(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 
 	if (flags & DC_EXEC) {
 		p = DEREF_PLAYER(_current_player);
-		old_str = p->president_name_1;
+		DeleteName(p->president_name_1);
 		p->president_name_1 = str;
-		DeleteName(old_str);
 
 		if (p->name_1 == STR_SV_UNNAMED) {
 			ttd_strlcat((char*)_decode_parameters, " Transport", sizeof(_decode_parameters));
-			DoCommandByTile(0, p1, 0, DC_EXEC, CMD_CHANGE_COMPANY_NAME);
+			DoCommandByTile(0, 0, 0, DC_EXEC, CMD_CHANGE_COMPANY_NAME);
 		}
 		MarkWholeScreenDirty();
-	} else {
+	} else
 		DeleteName(str);
-	}
 
 	return 0;
 }
diff --git a/players.c b/players.c
index eb5733494..7c1b4f92b 100644
--- a/players.c
+++ b/players.c
@@ -672,12 +672,22 @@ int32 CmdPlayerCtrl(int x, int y, uint32 flags, uint32 p1, uint32 p2)
 				NetworkUpdateClientInfo(ci->client_index);
 
 				if (ci->client_playas != 0 && ci->client_playas <= MAX_PLAYERS) {
+					PlayerID player_backup = _local_player;
 					_network_player_info[p->index].months_empty = 0;
 
+					/* XXX - When a client joins, we automatically set it's name to the player's
+      		 * name (for some reason). As it stands now only the server knows the client's
+					 * name, so it needs to send out a "broadcast" to do this. To achieve this we send
+					 * a network command. However, it uses _local_player to execute the command as.
+					 * To prevent abuse (eg. only yourself can change your name/company), we 'cheat'
+					 * by impersonation _local_player as the server. Not the best solution; but it
+					 * works.
+					 * TODO: Perhaps this could be improved by when the client is ready with joining
+					 * to let it send itself the command, and not the server? For example in network_client.c:534? */
 					memcpy(_decode_parameters, ci->client_name, 32);
-					/* XXX - What are the consequents of this? It is needed, but is it bad? */
-					_docommand_recursive = 0;
-					DoCommandP(0, ci->client_playas-1, 0, NULL, CMD_CHANGE_PRESIDENT_NAME | CMD_MSG(STR_700D_CAN_T_CHANGE_PRESIDENT));
+					_local_player = ci->client_playas - 1;
+					NetworkSend_Command(0, 0, 0, CMD_CHANGE_PRESIDENT_NAME, NULL);
+					_local_player = player_backup;
 				}
 			}
 		} else {
diff --git a/variables.h b/variables.h
index c55ce6a7b..80624aaeb 100644
--- a/variables.h
+++ b/variables.h
@@ -279,7 +279,7 @@ VARDEF bool _is_ai_player; // current player is an AI player? - Can be removed i
 VARDEF bool _do_autosave;
 VARDEF int _autosave_ctr;
 
-VARDEF byte _local_player;
+VARDEF PlayerID _local_player;
 VARDEF byte _display_opt;
 VARDEF byte _pause;
 VARDEF int _caret_timer;
@@ -292,7 +292,7 @@ VARDEF StringID _error_message_2;
 VARDEF int32 _additional_cash_required;
 
 VARDEF uint32 _decode_parameters[20];
-VARDEF byte _current_player;
+VARDEF PlayerID _current_player;
 
 VARDEF int _docommand_recursive;
 
-- 
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