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
2.1 KiB
C
62 lines
2.1 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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* empio.h: Describes io pointers used in Empire
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*
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* Known contributors to this file:
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* Markus Armbruster, 2004-2009
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*/
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#ifndef EMPIO_H
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#define EMPIO_H
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#include <sys/time.h>
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#define IO_READ 0x1
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#define IO_WRITE 0x2
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#define IO_EOF 0x10
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#define IO_ERROR 0x40
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#define IO_BUFSIZE 4096
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extern struct iop *io_open(int, int, int, struct timeval);
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extern void io_init(void);
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extern void io_close(struct iop *);
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extern int io_input(struct iop *, int);
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extern int io_inputwaiting(struct iop *);
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extern int io_outputwaiting(struct iop *);
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extern int io_output(struct iop *, int);
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extern int io_output_if_queue_long(struct iop *, int);
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extern int io_peek(struct iop *, char *, int);
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extern int io_read(struct iop *, char *, int);
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extern int io_write(struct iop *, char *, int);
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extern int io_gets(struct iop *, char *, int);
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extern int io_puts(struct iop *, char *);
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extern int io_shutdown(struct iop *, int);
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extern int io_error(struct iop *);
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extern int io_eof(struct iop *);
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extern int io_fileno(struct iop *);
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#endif
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