Markus Armbruster
7e2008e7f4
Why upgrade? I'm not a lawyer, but here's my take on the differences to version 2: * Software patents: better protection against abuse of patents to prevent users from exercising the rights under the GPL. I doubt we'll get hit with a patent suit, but it's a good move just on general principles. * License compatibility: compatible with more free licenses, i.e. can "steal" more free software for use in Empire. I don't expect to steal much, but it's nice to have the option. * Definition of "source code": modernization of some details for today's networked world, to make it easier to distribute the software. Not really relevant to us now, as we normally distribute full source code. * Tivoization: this is about putting GPL-licensed software in hardware, then make the hardware refuse to run modified software. "Neat" trick to effectively deny its users their rights under the GPL. Abuse was "pioneered" by TiVo (popular digital video recorders). GPLv3 forbids it. Unlikely to become a problem for us. * Internationalization: more careful wording, to harden the license outside the US. The lawyers tell us it better be done that way. * License violations: friendlier way to deal with license violations. This has come out of past experience enforcing the GPL. * Additional permissions: Probably not relevant to us. Also include myself in the list of principal authors.
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2011, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure, Markus Armbruster
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*
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* Empire is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* ---
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*
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* See files README, COPYING and CREDITS in the root of the source
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* tree for related information and legal notices. It is expected
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* that future projects/authors will amend these files as needed.
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*
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* ---
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*
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* proto.h: Protocol for client
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*
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* Known contributors to this file:
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* Dave Pare, 1986
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*/
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#ifndef PROTO_H
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#define PROTO_H
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/*
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* Protocol version.
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* Bump this if the protocol changes in a way that is not backwards
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* compatible. This breaks all existing clients. If you are tempted
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* to do that, please consider using session options to make your
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* change backwards compatible.
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*/
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#define CLIENTPROTO 2
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#define C_CMDOK 0x0
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#define C_DATA 0x1
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#define C_INIT 0x2
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#define C_EXIT 0x3
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#define C_FLUSH 0x4
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#define C_NOECHO 0x5
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#define C_PROMPT 0x6
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#define C_ABORT 0x7
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#define C_REDIR 0x8
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#define C_PIPE 0x9
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#define C_CMDERR 0xA
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#define C_BADCMD 0xB
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#define C_EXECUTE 0xC
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#define C_FLASH 0xD
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#define C_INFORM 0xE
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#define C_LAST 0xE
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#endif
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