2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2009, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * See files README, COPYING and CREDITS in the root of the source
23 * tree for related information and legal notices. It is expected
24 * that future projects/authors will amend these files as needed.
28 * mailbox.c: Return string containing telegram file
30 * Known contributors to this file:
39 #include "prototypes.h"
42 mailbox(char *buf, natid cn)
44 sprintf(buf, "%s/tel%d", teldir, cn);
49 * Read telegram header from FP into TEL.
50 * MBOX is the file name, it is used for logging errors.
51 * Return 1 on success, 0 on EOF, -1 on error.
54 tel_read_header(FILE *fp, char *mbox, struct telstr *tel)
58 n = fread(tel, 1, sizeof(*tel), fp);
59 if (n == 0 && feof(fp))
62 || tel->tel_type > TEL_LAST || tel->tel_from > MAXNOC) {
63 logerror("Mailbox %s corrupt: bad header", mbox);
70 * Read telegram body from FP.
71 * MBOX is the file name, it is used for logging errors.
73 * Unless SINK is null, it is called like SINK(CHUNK, SZ, ARG) to
74 * consume the body, chunk by chunk. The chunks are UTF-8, and
75 * CHUNK[SZ} is 0. Reading fails when SINK() returns a negative
77 * Return 0 on success, -1 on failure.
80 tel_read_body(FILE *fp, char *mbox, struct telstr *tel,
81 int (*sink)(char *, size_t, void *),
87 left = tel->tel_length;
89 sz = MIN(left, sizeof(buf) - 1);
90 if (fread(buf, 1, sz, fp) != sz) {
91 logerror("Mailbox %s corrupt: can't read body", mbox);
95 if (sink && sink(buf, sz, arg) < 0)