Import of Empire 4.2.12
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commit
d8b7fdfae1
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373
src/client/servcmd.c
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373
src/client/servcmd.c
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/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2000, 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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* servercmd.c: Change the state depending on the command from the server.
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*
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* Known contributors to this file:
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* Dave Pare, 1989
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* Steve McClure, 1998
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*/
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#include "misc.h"
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#include "proto.h"
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#include "queue.h"
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#include "ioqueue.h"
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#include <stdio.h>
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#include <ctype.h>
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#include <fcntl.h>
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#if !defined(_WIN32)
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#include <unistd.h>
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#endif
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extern s_char *gettag();
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s_char num_teles[64];
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static s_char the_prompt[1024];
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static int mode;
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static int nbtu;
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static int nmin;
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FILE *redir_fp;
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FILE *pipe_fp;
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int exec_fd;
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void prompt();
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void doredir();
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void dopipe();
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void doexecute();
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void output();
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void screen();
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void free();
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int sendeof();
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int termio();
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void _noecho();
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extern s_char *SO;
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extern s_char *SE;
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void
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servercmd(ioq, auxfi)
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struct ioqueue *ioq;
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FILE *auxfi;
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{
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s_char *ioq_gets(struct ioqueue *, s_char *, int);
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s_char buf[1024];
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s_char *p;
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int code;
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while (ioq_gets(ioq, buf, sizeof(buf))) {
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p = buf;
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while (*p && !isspace(*p))
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p++;
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*p++ = 0;
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if (isalpha(*buf))
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code = 10 + (*buf - 'a');
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else
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code = *buf - '0';
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switch (code) {
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case C_PROMPT:
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if (sscanf(p, "%d %d", &nbtu, &nmin) != 2) {
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fprintf(stderr, "prompt: bad server prompt %s\n", p);
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}
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mode = code;
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sprintf(the_prompt, "[%d:%d] Command : ", nbtu, nmin);
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prompt(auxfi);
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break;
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case C_REDIR:
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doredir(p);
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break;
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case C_PIPE:
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dopipe(p);
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break;
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case C_FLUSH:
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mode = code;
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sprintf(the_prompt, "%s", p);
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prompt(auxfi);
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break;
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case C_EXECUTE:
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doexecute(p, auxfi);
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break;
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case C_INFORM:
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if (*p) {
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p[strlen(p)-1] = '\0';
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sprintf(num_teles, "(%s) ", p + 1);
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if (!redir_fp &&
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!pipe_fp &&
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!exec_fd) {
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putchar('\07');
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prompt(0);
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}
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}
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else
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*num_teles = '\0';
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break;
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default:
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output(code, p, auxfi);
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break;
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}
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}
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}
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void
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prompt(auxfi)
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FILE *auxfi;
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{
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if (mode == C_PROMPT) {
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if (redir_fp) {
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(void) fclose(redir_fp);
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redir_fp = 0;
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} else if (pipe_fp) {
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#ifndef _WIN32
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(void) pclose(pipe_fp);
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#endif
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pipe_fp = 0;
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} else if (exec_fd > 0) {
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close(exec_fd);
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close(0);
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exec_fd = -1;
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open("/dev/tty", O_RDONLY, 0);
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}
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}
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if (mode == C_PROMPT)
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printf("\n");
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printf("%s%s", num_teles, the_prompt);
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(void) fflush(stdout);
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if (auxfi) {
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fprintf(auxfi, "\n%s%s", num_teles, the_prompt);
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(void)fflush(auxfi);
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}
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}
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/*
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* opens redir_fp if successful
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*/
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void
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doredir(p)
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s_char *p;
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{
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s_char *how;
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s_char *name;
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s_char *tag;
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int mode;
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int fd;
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if (redir_fp) {
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(void) fclose(redir_fp);
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redir_fp = 0;
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}
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how = p++;
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if (*p && ((*p == '>') || (*p == '!')))
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p++;
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tag = gettag(p);
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while (*p && isspace(*p))
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p++;
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name = p;
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while (*p && !isspace(*p))
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p++;
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*p = 0;
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if (tag == NULL) {
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fprintf(stderr, "WARNING! Server redirected output to file %s\n",name);
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return;
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}
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mode = O_WRONLY | O_CREAT;
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if (how[1] == '>')
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mode |= O_APPEND;
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else if (how[1] == '!')
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mode |= O_TRUNC;
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else
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mode |= O_EXCL;
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if (*name == 0) {
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fprintf(stderr, "Null file name after redirect\n");
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free(tag);
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return;
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}
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if ((fd = open(name, mode, 0600)) < 0) {
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fprintf(stderr, "Redirect open failed\n");
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perror(name);
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} else {
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redir_fp = fdopen(fd, "w");
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}
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free(tag);
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}
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/*
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* opens "pipe_fp" if successful
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*/
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void
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dopipe(p)
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s_char *p;
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{
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extern FILE *popen();
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s_char *tag;
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if (*p == '|')
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p++;
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tag = gettag(p);
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while (*p && isspace(*p))
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p++;
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if (tag == NULL) {
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fprintf(stderr, "WARNING! Server attempted to run: %s\n",p);
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return;
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}
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if (*p == 0) {
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fprintf(stderr, "Null program name after redirect\n");
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free(tag);
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return;
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}
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#ifndef _WIN32
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if ((pipe_fp = popen(p, "w")) == 0) {
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#else
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if (1) {
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#endif
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fprintf(stderr, "Pipe open failed\n");
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perror(p);
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}
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free(tag);
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}
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void
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doexecute(p, auxfi)
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s_char *p;
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FILE *auxfi;
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{
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extern int sock;
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int fd;
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s_char *tag;
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tag = gettag(p);
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while (*p && isspace(*p))
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p++;
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if (tag == NULL) {
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fprintf(stderr, "WARNING! Server attempted unauthorized read of file %s\n",p);
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return;
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}
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if (p == 0) {
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fprintf(stderr, "Null file to execute\n");
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free(tag);
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return;
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}
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#if !defined(_WIN32)
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if ((fd = open(p, O_RDONLY, 0)) < 0) {
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#else
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if ((fd = open(p, O_RDONLY|O_BINARY, 0)) < 0) {
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#endif
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fprintf(stderr, "Can't open execute file\n");
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perror(p);
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free(tag);
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return;
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}
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/* copies 4k at a time to the socket */
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while (termio(fd, sock, auxfi)) /*do copy*/;
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/* Some platforms don't send the eof (cntl-D) at the end of
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copying a file. If emp_client hangs at the end of an
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execute, include the following line and notify wolfpack
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of the platform you are using.
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sendeof(sock);
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*/
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close(fd);
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free(tag);
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}
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void
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output(code, buf, auxfi)
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int code;
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s_char *buf;
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FILE *auxfi;
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{
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switch (code) {
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case C_NOECHO:
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_noecho(0);
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break;
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case C_FLUSH:
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(void) fflush(stdout);
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if (auxfi)
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(void) fflush(auxfi);
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break;
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case C_ABORT:
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printf("Aborted\n");
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if (auxfi)
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fprintf(auxfi, "Aborted\n");
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break;
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case C_CMDERR:
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case C_BADCMD:
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printf("Error; ");
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if (auxfi)
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fprintf(auxfi, "Error; ");
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break;
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case C_EXIT:
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printf("Exit: ");
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if (auxfi)
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fprintf(auxfi, "Exit: ");
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break;
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case C_FLASH:
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printf("\n");
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break;
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default:
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break;
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}
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if (auxfi) {
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fprintf(auxfi, "%s", buf);
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if (code == C_FLUSH)
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(void) fflush(auxfi);
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else
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(void) putc('\n', auxfi);
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}
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if (redir_fp)
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fprintf(redir_fp, "%s\n", buf);
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else if (pipe_fp)
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fprintf(pipe_fp, "%s\n", buf);
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else {
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if (SO && SE)
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screen(buf);
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else
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fputs(buf, stdout);
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if (code == C_FLUSH)
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(void) fflush(stdout);
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else
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(void) putc('\n', stdout);
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}
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}
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void
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screen(buf)
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register s_char *buf;
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{
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register s_char *sop;
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register s_char c;
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while ((c = *buf++)) {
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if (c & 0x80) {
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for (sop = SO; putc(*sop, stdout); sop++)
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;
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(void) putc(c & 0x7f, stdout);
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for (sop = SE; putc(*sop, stdout); sop++)
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;
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} else
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(void) putc(c, stdout);
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}
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}
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