Markus Armbruster
7ef7aa83b8
(login): New parameter utf8. If set, request option utf-8 from server. (expect, recvline): Split recvline() out of expect(). Replace or remove some unhelpful diagnostics. (eight_bit_clean): New. (screen): If eight_bit_clean is set, highlighting is switched with SO/SI. Else characters with MSB set are highlighted. (main): New option -u to request UTF-8 and set eight_bit_clean.
171 lines
3.6 KiB
C
171 lines
3.6 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2005, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
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* related information and legal notices. It is expected that any future
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* projects/authors will amend these files as needed.
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*
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* ---
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*
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* expect.c: Read from the socket, expecting to see a particular code.
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*
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* Known contributors to this file:
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* Steve McClure, 1998
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*/
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#include "misc.h"
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <sys/types.h>
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#ifndef _WIN32
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#include <sys/socket.h>
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#include <unistd.h>
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#else
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#include <winsock.h>
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#endif
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int
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recvline(int s, char *buf)
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{
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int size;
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char *p;
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int n;
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int code;
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int newline;
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char *ptr;
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int cc;
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size = 1024;
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#ifndef _WIN32
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(void)alarm(30);
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#endif
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ptr = buf;
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n = recv(s, ptr, size, MSG_PEEK);
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if (n <= 0) {
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#ifdef _WIN32
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errno = WSAGetLastError();
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#endif
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perror("recv");
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return 0;
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}
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size -= n;
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buf[n] = '\0';
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if ((p = strchr(ptr, '\n')) == NULL) {
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do {
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#ifndef _WIN32
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cc = read(s, ptr, n);
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#else
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cc = recv(s, ptr, n, 0);
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#endif
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if (cc < 0) {
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#ifdef _WIN32
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errno = WSAGetLastError();
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#endif
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perror("expect: read");
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return 0;
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}
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if (cc != n) {
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fprintf(stderr, "expect: short read (%d not %d)\n", cc, n);
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return 0;
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}
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ptr += n;
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if ((n = recv(s, ptr, size, MSG_PEEK)) <= 0) {
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#ifdef _WIN32
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errno = WSAGetLastError();
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#endif
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perror("recv");
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return 0;
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}
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size -= n;
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ptr[n] = '\0';
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} while ((p = strchr(ptr, '\n')) == 0);
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newline = 1 + p - buf;
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*p = 0;
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} else
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newline = 1 + p - ptr;
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#ifndef _WIN32
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cc = read(s, buf, newline);
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#else
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cc = recv(s, buf, newline, 0);
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#endif
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if (cc < 0) {
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#ifdef _WIN32
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errno = WSAGetLastError();
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#endif
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perror("expect: read #2");
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return 0;
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}
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if (cc != newline) {
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fprintf(stderr, "expect: short read #2 (%d not %d)\n",
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cc, newline);
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return 0;
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}
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buf[newline] = '\0';
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#ifndef _WIN32
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(void)alarm(0);
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#endif
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if (!isxdigit(*buf)) {
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fprintf(stderr, "Malformed line %s\n", buf);
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return 0;
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}
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if (isdigit(*buf))
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code = *buf - '0';
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else {
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if (isupper(*buf))
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*buf = tolower(*buf);
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code = 10 + *buf - 'a';
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}
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return code;
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}
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int
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expect(int s, int match, char *buf)
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{
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int code = recvline(s, buf);
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return code == match;
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}
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void
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sendcmd(int s, char *cmd, char *arg)
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{
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char buf[128];
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int cc;
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int len;
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(void)sprintf(buf, "%s %s\n", cmd, arg != NULL ? arg : "");
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len = strlen(buf);
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#ifndef _WIN32
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cc = write(s, buf, len);
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#else
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cc = send(s, buf, len, 0);
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#endif
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if (cc < 0) {
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#ifdef _WIN32
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errno = WSAGetLastError();
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#endif
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perror("sendcmd: write");
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}
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if (cc != len) {
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fprintf(stderr, "sendcmd: short write (%d not %d)\n", cc, len);
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}
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}
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