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/* SPDX-License-Identifier: GPL-3.0-or-later */
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/*
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* io
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* - basic terminal-based user input / output features
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*
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* Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
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*/
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#include "common.h"
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#include "io.h"
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#include "log.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/epoll.h>
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#include <sys/ioctl.h>
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#include <sys/select.h>
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#include <libssh/callbacks.h>
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#include <libssh/libssh.h>
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#include <libssh/server.h>
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char stdio_charset[20] = BBS_DEFAULT_CHARSET;
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// static input / output buffer
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static char stdin_buf[LINE_BUFFER_LEN];
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static char stdout_buf[BUFSIZ];
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static int stdin_buf_len = 0;
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static int stdout_buf_len = 0;
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static int stdin_buf_offset = 0;
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static int stdout_buf_offset = 0;
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static char stdin_conv[LINE_BUFFER_LEN * 2];
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static char stdout_conv[BUFSIZ * 2];
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static int stdin_conv_len = 0;
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static int stdout_conv_len = 0;
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static int stdin_conv_offset = 0;
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static int stdout_conv_offset = 0;
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static iconv_t stdin_cd = NULL;
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static iconv_t stdout_cd = NULL;
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int prints(const char *format, ...)
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{
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char buf[BUFSIZ];
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va_list args;
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int ret;
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va_start(args, format);
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ret = vsnprintf(buf, sizeof(buf), format, args);
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va_end(args);
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if (ret > 0)
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{
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if (stdout_buf_len + ret > BUFSIZ)
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{
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iflush();
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}
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if (stdout_buf_len + ret <= BUFSIZ)
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{
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memcpy(stdout_buf + stdout_buf_len, buf, (size_t)ret);
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stdout_buf_len += ret;
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}
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else
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{
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errno = EAGAIN;
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ret = (BUFSIZ - stdout_buf_len - ret);
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log_error("Output buffer is full, additional %d is required\n", ret);
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}
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}
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return ret;
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}
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int outc(char c)
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{
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int ret;
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if (stdout_buf_len + 1 > BUFSIZ)
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{
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iflush();
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}
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if (stdout_buf_len + 1 <= BUFSIZ)
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{
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stdout_buf[stdout_buf_len] = c;
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stdout_buf_len++;
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}
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else
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{
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errno = EAGAIN;
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ret = -1;
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}
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return ret;
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}
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int iflush(void)
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{
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int flags;
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struct epoll_event ev, events[MAX_EVENTS];
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int nfds, epollfd;
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int retry;
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int ret = 0;
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epollfd = epoll_create1(0);
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if (epollfd < 0)
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{
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log_error("epoll_create1() error (%d)\n", errno);
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return -1;
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}
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ev.events = EPOLLOUT;
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ev.data.fd = STDOUT_FILENO;
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if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
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{
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log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno);
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if (close(epollfd) < 0)
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{
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log_error("close(epoll) error (%d)\n");
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}
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return -1;
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}
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// Set STDOUT as non-blocking
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flags = fcntl(STDOUT_FILENO, F_GETFL, 0);
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fcntl(STDOUT_FILENO, F_SETFL, flags | O_NONBLOCK);
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// Retry wait / flush for at most 3 times
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retry = 3;
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while (retry > 0 && !SYS_server_exit)
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{
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retry--;
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nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
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if (nfds < 0)
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{
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if (errno != EINTR)
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{
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log_error("epoll_wait() error (%d)\n", errno);
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break;
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}
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continue;
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}
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else if (nfds == 0) // timeout
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{
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continue;
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}
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for (int i = 0; i < nfds; i++)
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{
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if (events[i].data.fd == STDOUT_FILENO)
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{
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if (stdout_buf_offset < stdout_buf_len)
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{
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ret = io_buf_conv(stdout_cd, stdout_buf, &stdout_buf_len, &stdout_buf_offset, stdout_conv, sizeof(stdout_conv), &stdout_conv_len);
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if (ret < 0)
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{
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log_error("io_buf_conv(stdout, %d, %d, %d) error\n", stdout_buf_len, stdout_buf_offset, stdout_conv_len);
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stdout_buf_len = stdout_buf_offset; // Discard invalid sequence
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}
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}
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while (stdout_conv_offset < stdout_conv_len && !SYS_server_exit) // write until complete or error
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{
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if (SSH_v2)
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{
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ret = ssh_channel_write(SSH_channel, stdout_conv + stdout_conv_offset, (uint32_t)(stdout_conv_len - stdout_conv_offset));
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if (ret == SSH_ERROR)
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{
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log_error("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session));
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retry = 0;
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break;
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}
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}
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else
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{
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ret = (int)write(STDOUT_FILENO, stdout_conv + stdout_conv_offset, (size_t)(stdout_conv_len - stdout_conv_offset));
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}
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if (ret < 0)
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{
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if (errno == EAGAIN || errno == EWOULDBLOCK)
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{
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break;
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}
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else if (errno == EINTR)
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{
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continue;
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}
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else
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{
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#ifdef _DEBUG
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log_error("write(STDOUT) error (%d)\n", errno);
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#endif
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retry = 0;
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break;
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}
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}
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else if (ret == 0) // broken pipe
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{
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retry = 0;
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break;
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}
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else
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{
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stdout_conv_offset += ret;
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if (stdout_conv_offset >= stdout_conv_len) // flush buffer completely
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{
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ret = 0;
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stdout_conv_offset = 0;
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stdout_conv_len = 0;
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retry = 0;
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break;
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}
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continue;
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}
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}
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}
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}
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}
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// Restore STDOUT flags
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fcntl(STDOUT_FILENO, F_SETFL, flags);
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if (close(epollfd) < 0)
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{
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log_error("close(epoll) error (%d)\n");
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}
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return ret;
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}
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int igetch(int timeout)
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{
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static int stdin_read_wait = 0;
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struct epoll_event ev, events[MAX_EVENTS];
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int nfds, epollfd;
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int ret;
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int loop;
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unsigned char tmp[LINE_BUFFER_LEN];
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int out = KEY_NULL;
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int in_esc = 0;
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int in_ascii = 0;
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int in_control = 0;
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int i = 0;
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int flags;
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if (stdin_conv_offset >= stdin_conv_len)
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{
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stdin_conv_len = 0;
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stdin_conv_offset = 0;
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epollfd = epoll_create1(0);
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if (epollfd < 0)
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{
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log_error("epoll_create1() error (%d)\n", errno);
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return -1;
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}
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ev.events = EPOLLIN;
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ev.data.fd = STDIN_FILENO;
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if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
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{
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log_error("epoll_ctl(STDIN_FILENO) error (%d)\n", errno);
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if (close(epollfd) < 0)
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{
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log_error("close(epoll) error (%d)\n");
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}
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return -1;
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}
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flags = fcntl(STDIN_FILENO, F_GETFL, 0);
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fcntl(STDIN_FILENO, F_SETFL, flags | O_NONBLOCK);
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| 282 |
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| 283 |
for (loop = 1; loop && stdin_buf_len < sizeof(stdin_buf) && stdin_conv_offset >= stdin_conv_len && !SYS_server_exit;)
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| 284 |
{
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| 285 |
if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
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| 286 |
{
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| 287 |
log_error("SSH channel is closed\n");
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| 288 |
loop = 0;
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break;
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| 290 |
}
|
| 291 |
|
| 292 |
if (!stdin_read_wait)
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| 293 |
{
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| 294 |
nfds = epoll_wait(epollfd, events, MAX_EVENTS, timeout);
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| 295 |
|
| 296 |
if (nfds < 0)
|
| 297 |
{
|
| 298 |
if (errno != EINTR)
|
| 299 |
{
|
| 300 |
log_error("epoll_wait() error (%d)\n", errno);
|
| 301 |
break;
|
| 302 |
}
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| 303 |
continue;
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| 304 |
}
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| 305 |
else if (nfds == 0) // timeout
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| 306 |
{
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| 307 |
out = KEY_TIMEOUT;
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| 308 |
break;
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| 309 |
}
|
| 310 |
|
| 311 |
for (int i = 0; i < nfds; i++)
|
| 312 |
{
|
| 313 |
if (events[i].data.fd == STDIN_FILENO)
|
| 314 |
{
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| 315 |
stdin_read_wait = 1;
|
| 316 |
}
|
| 317 |
}
|
| 318 |
}
|
| 319 |
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| 320 |
if (stdin_read_wait)
|
| 321 |
{
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| 322 |
while (stdin_buf_len < sizeof(stdin_buf) && !SYS_server_exit) // read until complete or error
|
| 323 |
{
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| 324 |
if (SSH_v2)
|
| 325 |
{
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| 326 |
ret = ssh_channel_read_nonblocking(SSH_channel, stdin_buf + stdin_buf_len, sizeof(stdin_buf) - (uint32_t)stdin_buf_len, 0);
|
| 327 |
if (ret == SSH_ERROR)
|
| 328 |
{
|
| 329 |
log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session));
|
| 330 |
loop = 0;
|
| 331 |
break;
|
| 332 |
}
|
| 333 |
else if (ret == SSH_EOF)
|
| 334 |
{
|
| 335 |
stdin_read_wait = 0;
|
| 336 |
loop = 0;
|
| 337 |
break;
|
| 338 |
}
|
| 339 |
else if (ret == 0)
|
| 340 |
{
|
| 341 |
out = 0;
|
| 342 |
stdin_read_wait = 0;
|
| 343 |
loop = 0;
|
| 344 |
break;
|
| 345 |
}
|
| 346 |
}
|
| 347 |
else
|
| 348 |
{
|
| 349 |
ret = (int)read(STDIN_FILENO, stdin_buf + stdin_buf_len, sizeof(stdin_buf) - (size_t)stdin_buf_len);
|
| 350 |
}
|
| 351 |
if (ret < 0)
|
| 352 |
{
|
| 353 |
if (errno == EAGAIN || errno == EWOULDBLOCK)
|
| 354 |
{
|
| 355 |
out = 0;
|
| 356 |
stdin_read_wait = 0;
|
| 357 |
loop = 0;
|
| 358 |
break;
|
| 359 |
}
|
| 360 |
else if (errno == EINTR)
|
| 361 |
{
|
| 362 |
continue;
|
| 363 |
}
|
| 364 |
else
|
| 365 |
{
|
| 366 |
#ifdef _DEBUG
|
| 367 |
log_error("read(STDIN) error (%d)\n", errno);
|
| 368 |
#endif
|
| 369 |
loop = 0;
|
| 370 |
break;
|
| 371 |
}
|
| 372 |
}
|
| 373 |
else if (ret == 0) // broken pipe
|
| 374 |
{
|
| 375 |
stdin_read_wait = 0;
|
| 376 |
loop = 0;
|
| 377 |
break;
|
| 378 |
}
|
| 379 |
else
|
| 380 |
{
|
| 381 |
stdin_buf_len += ret;
|
| 382 |
continue;
|
| 383 |
}
|
| 384 |
}
|
| 385 |
}
|
| 386 |
|
| 387 |
// For debug
|
| 388 |
#ifdef _DEBUG
|
| 389 |
for (int j = stdin_buf_offset; j < stdin_buf_len; j++)
|
| 390 |
{
|
| 391 |
log_error("Debug input: <--[%u]\n", (stdin_buf[j] + 256) % 256);
|
| 392 |
}
|
| 393 |
#endif
|
| 394 |
}
|
| 395 |
|
| 396 |
fcntl(STDIN_FILENO, F_SETFL, flags);
|
| 397 |
|
| 398 |
if (close(epollfd) < 0)
|
| 399 |
{
|
| 400 |
log_error("close(epoll) error (%d)\n");
|
| 401 |
}
|
| 402 |
|
| 403 |
if (stdin_buf_offset < stdin_buf_len)
|
| 404 |
{
|
| 405 |
ret = io_buf_conv(stdin_cd, stdin_buf, &stdin_buf_len, &stdin_buf_offset, stdin_conv, sizeof(stdin_conv), &stdin_conv_len);
|
| 406 |
if (ret < 0)
|
| 407 |
{
|
| 408 |
log_error("io_buf_conv(stdin, %d, %d, %d) error\n", stdin_buf_len, stdin_buf_offset, stdin_conv_len);
|
| 409 |
stdin_buf_len = stdin_buf_offset; // Discard invalid sequence
|
| 410 |
}
|
| 411 |
|
| 412 |
// For debug
|
| 413 |
#ifdef _DEBUG
|
| 414 |
for (int j = stdin_conv_offset; j < stdin_conv_len; j++)
|
| 415 |
{
|
| 416 |
log_error("Debug input_conv: <--[%u]\n", (stdin_conv[j] + 256) % 256);
|
| 417 |
}
|
| 418 |
#endif
|
| 419 |
}
|
| 420 |
}
|
| 421 |
|
| 422 |
while (stdin_conv_offset < stdin_conv_len)
|
| 423 |
{
|
| 424 |
unsigned char c = (unsigned char)stdin_conv[stdin_conv_offset++];
|
| 425 |
|
| 426 |
// Convert \r\n to \r
|
| 427 |
if (c == CR && stdin_conv_offset < stdin_conv_len && stdin_conv[stdin_conv_offset] == LF)
|
| 428 |
{
|
| 429 |
stdin_conv_offset++;
|
| 430 |
}
|
| 431 |
|
| 432 |
// Convert single \n to \r
|
| 433 |
if (c == LF)
|
| 434 |
{
|
| 435 |
c = CR;
|
| 436 |
}
|
| 437 |
|
| 438 |
if (c == KEY_CONTROL)
|
| 439 |
{
|
| 440 |
if (in_control == 0)
|
| 441 |
{
|
| 442 |
in_control = 1;
|
| 443 |
i = 0;
|
| 444 |
continue;
|
| 445 |
}
|
| 446 |
}
|
| 447 |
|
| 448 |
if (in_control)
|
| 449 |
{
|
| 450 |
tmp[i++] = c;
|
| 451 |
if (i >= 2)
|
| 452 |
{
|
| 453 |
out = (int)tmp[0] * 256 + tmp[1];
|
| 454 |
in_control = 0;
|
| 455 |
break;
|
| 456 |
}
|
| 457 |
continue;
|
| 458 |
}
|
| 459 |
|
| 460 |
if (c == KEY_ESC)
|
| 461 |
{
|
| 462 |
if (in_esc == 0)
|
| 463 |
{
|
| 464 |
in_esc = 1;
|
| 465 |
in_ascii = 1;
|
| 466 |
i = 0;
|
| 467 |
continue;
|
| 468 |
}
|
| 469 |
else
|
| 470 |
{
|
| 471 |
out = KEY_CSI;
|
| 472 |
in_esc = 0;
|
| 473 |
break;
|
| 474 |
}
|
| 475 |
}
|
| 476 |
|
| 477 |
in_esc = 0;
|
| 478 |
|
| 479 |
if (in_ascii)
|
| 480 |
{
|
| 481 |
tmp[i++] = c;
|
| 482 |
if (i == 2 && (tmp[0] == 79 || tmp[0] == 91))
|
| 483 |
{
|
| 484 |
in_ascii = 0;
|
| 485 |
switch (tmp[1])
|
| 486 |
{
|
| 487 |
case 65:
|
| 488 |
out = KEY_UP;
|
| 489 |
break;
|
| 490 |
case 66:
|
| 491 |
out = KEY_DOWN;
|
| 492 |
break;
|
| 493 |
case 67:
|
| 494 |
out = KEY_RIGHT;
|
| 495 |
break;
|
| 496 |
case 68:
|
| 497 |
out = KEY_LEFT;
|
| 498 |
break;
|
| 499 |
default:
|
| 500 |
in_ascii = 1;
|
| 501 |
}
|
| 502 |
if (!in_ascii)
|
| 503 |
{
|
| 504 |
break;
|
| 505 |
}
|
| 506 |
}
|
| 507 |
if (i == 2 && tmp[0] == 91) // Fterm
|
| 508 |
{
|
| 509 |
in_ascii = 0;
|
| 510 |
switch (tmp[1])
|
| 511 |
{
|
| 512 |
case 86:
|
| 513 |
out = KEY_SHIFT_F1;
|
| 514 |
break;
|
| 515 |
case 90:
|
| 516 |
out = KEY_SHIFT_F2;
|
| 517 |
break;
|
| 518 |
case 97:
|
| 519 |
out = KEY_SHIFT_F3;
|
| 520 |
break;
|
| 521 |
case 98:
|
| 522 |
out = KEY_SHIFT_F4;
|
| 523 |
break;
|
| 524 |
case 99:
|
| 525 |
out = KEY_SHIFT_F5;
|
| 526 |
break;
|
| 527 |
case 100:
|
| 528 |
out = KEY_SHIFT_F6;
|
| 529 |
break;
|
| 530 |
case 101:
|
| 531 |
out = KEY_SHIFT_F7;
|
| 532 |
break;
|
| 533 |
case 102:
|
| 534 |
out = KEY_SHIFT_F8;
|
| 535 |
break;
|
| 536 |
case 103:
|
| 537 |
out = KEY_SHIFT_F9;
|
| 538 |
break;
|
| 539 |
case 104:
|
| 540 |
out = KEY_SHIFT_F10;
|
| 541 |
break;
|
| 542 |
case 107:
|
| 543 |
out = KEY_CTRL_F1;
|
| 544 |
break;
|
| 545 |
case 108:
|
| 546 |
out = KEY_CTRL_F2;
|
| 547 |
break;
|
| 548 |
case 109:
|
| 549 |
out = KEY_CTRL_F3;
|
| 550 |
break;
|
| 551 |
case 112:
|
| 552 |
out = KEY_CTRL_F6;
|
| 553 |
break;
|
| 554 |
case 113:
|
| 555 |
out = KEY_CTRL_F7;
|
| 556 |
break;
|
| 557 |
case 114:
|
| 558 |
out = KEY_CTRL_F8;
|
| 559 |
break;
|
| 560 |
case 115:
|
| 561 |
out = KEY_CTRL_F9;
|
| 562 |
break;
|
| 563 |
case 116:
|
| 564 |
out = KEY_CTRL_F10;
|
| 565 |
break;
|
| 566 |
default:
|
| 567 |
in_ascii = 1;
|
| 568 |
}
|
| 569 |
if (!in_ascii)
|
| 570 |
{
|
| 571 |
break;
|
| 572 |
}
|
| 573 |
}
|
| 574 |
if (i == 2 && tmp[0] == 79) // Xterm
|
| 575 |
{
|
| 576 |
in_ascii = 0;
|
| 577 |
switch (tmp[1])
|
| 578 |
{
|
| 579 |
case 80:
|
| 580 |
out = KEY_F1;
|
| 581 |
break;
|
| 582 |
case 81:
|
| 583 |
out = KEY_F2;
|
| 584 |
break;
|
| 585 |
case 82:
|
| 586 |
out = KEY_F3;
|
| 587 |
break;
|
| 588 |
case 83:
|
| 589 |
out = KEY_F4;
|
| 590 |
break;
|
| 591 |
default:
|
| 592 |
in_ascii = 1;
|
| 593 |
}
|
| 594 |
if (!in_ascii)
|
| 595 |
{
|
| 596 |
break;
|
| 597 |
}
|
| 598 |
}
|
| 599 |
if (i == 3 && tmp[0] == 91 && tmp[2] == 126)
|
| 600 |
{
|
| 601 |
in_ascii = 0;
|
| 602 |
switch (tmp[1])
|
| 603 |
{
|
| 604 |
case 49:
|
| 605 |
out = KEY_HOME;
|
| 606 |
break;
|
| 607 |
case 50:
|
| 608 |
out = KEY_INS;
|
| 609 |
break;
|
| 610 |
case 51:
|
| 611 |
out = KEY_DEL;
|
| 612 |
break;
|
| 613 |
case 52:
|
| 614 |
out = KEY_END;
|
| 615 |
break;
|
| 616 |
case 53:
|
| 617 |
out = KEY_PGUP;
|
| 618 |
break;
|
| 619 |
case 54:
|
| 620 |
out = KEY_PGDN;
|
| 621 |
break;
|
| 622 |
default:
|
| 623 |
in_ascii = 1;
|
| 624 |
}
|
| 625 |
if (!in_ascii)
|
| 626 |
{
|
| 627 |
break;
|
| 628 |
}
|
| 629 |
}
|
| 630 |
if (i == 4 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 126) // Fterm
|
| 631 |
{
|
| 632 |
in_ascii = 0;
|
| 633 |
switch (tmp[2])
|
| 634 |
{
|
| 635 |
case 49:
|
| 636 |
out = KEY_F1;
|
| 637 |
break;
|
| 638 |
case 50:
|
| 639 |
out = KEY_F2;
|
| 640 |
break;
|
| 641 |
case 51:
|
| 642 |
out = KEY_F3;
|
| 643 |
break;
|
| 644 |
case 52:
|
| 645 |
out = KEY_F4;
|
| 646 |
break;
|
| 647 |
case 53:
|
| 648 |
out = KEY_F5;
|
| 649 |
break;
|
| 650 |
case 55:
|
| 651 |
out = KEY_F6;
|
| 652 |
break;
|
| 653 |
case 56:
|
| 654 |
out = KEY_F7;
|
| 655 |
break;
|
| 656 |
case 57:
|
| 657 |
out = KEY_F8;
|
| 658 |
break;
|
| 659 |
default:
|
| 660 |
in_ascii = 1;
|
| 661 |
}
|
| 662 |
if (!in_ascii)
|
| 663 |
{
|
| 664 |
break;
|
| 665 |
}
|
| 666 |
}
|
| 667 |
if (i == 4 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 126) // Fterm
|
| 668 |
{
|
| 669 |
in_ascii = 0;
|
| 670 |
switch (tmp[2])
|
| 671 |
{
|
| 672 |
case 48:
|
| 673 |
out = KEY_F9;
|
| 674 |
break;
|
| 675 |
case 49:
|
| 676 |
out = KEY_F10;
|
| 677 |
break;
|
| 678 |
case 50:
|
| 679 |
out = KEY_F11; // Fterm
|
| 680 |
break;
|
| 681 |
case 51:
|
| 682 |
out = KEY_F11; // Xterm
|
| 683 |
break;
|
| 684 |
case 52:
|
| 685 |
out = KEY_F12; // Xterm
|
| 686 |
break;
|
| 687 |
default:
|
| 688 |
in_ascii = 1;
|
| 689 |
}
|
| 690 |
if (!in_ascii)
|
| 691 |
{
|
| 692 |
break;
|
| 693 |
}
|
| 694 |
}
|
| 695 |
if (i == 5 && tmp[0] == 91 && tmp[1] == 49 && tmp[2] == 59 && tmp[3] == 53) // Xterm
|
| 696 |
{
|
| 697 |
in_ascii = 0;
|
| 698 |
switch (tmp[4])
|
| 699 |
{
|
| 700 |
case 65:
|
| 701 |
out = KEY_CTRL_UP;
|
| 702 |
break;
|
| 703 |
case 66:
|
| 704 |
out = KEY_CTRL_DOWN;
|
| 705 |
break;
|
| 706 |
case 67:
|
| 707 |
out = KEY_CTRL_RIGHT;
|
| 708 |
break;
|
| 709 |
case 68:
|
| 710 |
out = KEY_CTRL_LEFT;
|
| 711 |
break;
|
| 712 |
case 70:
|
| 713 |
out = KEY_CTRL_END;
|
| 714 |
break;
|
| 715 |
case 72:
|
| 716 |
out = KEY_CTRL_HOME;
|
| 717 |
break;
|
| 718 |
case 80:
|
| 719 |
out = KEY_CTRL_F1;
|
| 720 |
break;
|
| 721 |
case 81:
|
| 722 |
out = KEY_CTRL_F2;
|
| 723 |
break;
|
| 724 |
case 82:
|
| 725 |
out = KEY_CTRL_F3;
|
| 726 |
break;
|
| 727 |
default:
|
| 728 |
in_ascii = 1;
|
| 729 |
}
|
| 730 |
if (!in_ascii)
|
| 731 |
{
|
| 732 |
break;
|
| 733 |
}
|
| 734 |
}
|
| 735 |
if (i == 6 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 59 && tmp[4] == 53 && tmp[5] == 126) // Xterm
|
| 736 |
{
|
| 737 |
in_ascii = 0;
|
| 738 |
switch (tmp[2])
|
| 739 |
{
|
| 740 |
case 53:
|
| 741 |
out = KEY_CTRL_F5;
|
| 742 |
break;
|
| 743 |
case 55:
|
| 744 |
out = KEY_CTRL_F6;
|
| 745 |
break;
|
| 746 |
case 56:
|
| 747 |
out = KEY_CTRL_F7;
|
| 748 |
break;
|
| 749 |
case 57:
|
| 750 |
out = KEY_CTRL_F8;
|
| 751 |
break;
|
| 752 |
default:
|
| 753 |
in_ascii = 1;
|
| 754 |
}
|
| 755 |
if (!in_ascii)
|
| 756 |
{
|
| 757 |
break;
|
| 758 |
}
|
| 759 |
}
|
| 760 |
if (i == 6 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 59 && tmp[4] == 53 && tmp[5] == 126) // Xterm
|
| 761 |
{
|
| 762 |
in_ascii = 0;
|
| 763 |
switch (tmp[2])
|
| 764 |
{
|
| 765 |
case 48:
|
| 766 |
out = KEY_CTRL_F9;
|
| 767 |
break;
|
| 768 |
case 49:
|
| 769 |
out = KEY_CTRL_F10;
|
| 770 |
break;
|
| 771 |
case 51:
|
| 772 |
out = KEY_CTRL_F11;
|
| 773 |
break;
|
| 774 |
case 52:
|
| 775 |
out = KEY_CTRL_F12;
|
| 776 |
break;
|
| 777 |
default:
|
| 778 |
in_ascii = 1;
|
| 779 |
}
|
| 780 |
if (!in_ascii)
|
| 781 |
{
|
| 782 |
break;
|
| 783 |
}
|
| 784 |
}
|
| 785 |
if (i == 5 && tmp[0] == 91 && tmp[1] == 49 && tmp[2] == 59 && tmp[3] == 50) // Xterm
|
| 786 |
{
|
| 787 |
in_ascii = 0;
|
| 788 |
switch (tmp[4])
|
| 789 |
{
|
| 790 |
case 80:
|
| 791 |
out = KEY_SHIFT_F1;
|
| 792 |
break;
|
| 793 |
case 81:
|
| 794 |
out = KEY_SHIFT_F2;
|
| 795 |
break;
|
| 796 |
case 82:
|
| 797 |
out = KEY_SHIFT_F3;
|
| 798 |
break;
|
| 799 |
case 83:
|
| 800 |
out = KEY_SHIFT_F4;
|
| 801 |
break;
|
| 802 |
default:
|
| 803 |
in_ascii = 1;
|
| 804 |
}
|
| 805 |
if (!in_ascii)
|
| 806 |
{
|
| 807 |
break;
|
| 808 |
}
|
| 809 |
}
|
| 810 |
if (i == 6 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 59 && tmp[4] == 50 && tmp[5] == 126) // Xterm
|
| 811 |
{
|
| 812 |
in_ascii = 0;
|
| 813 |
switch (tmp[2])
|
| 814 |
{
|
| 815 |
case 53:
|
| 816 |
out = KEY_SHIFT_F5;
|
| 817 |
break;
|
| 818 |
case 55:
|
| 819 |
out = KEY_SHIFT_F6;
|
| 820 |
break;
|
| 821 |
case 56:
|
| 822 |
out = KEY_SHIFT_F7;
|
| 823 |
break;
|
| 824 |
case 57:
|
| 825 |
out = KEY_SHIFT_F8;
|
| 826 |
break;
|
| 827 |
default:
|
| 828 |
in_ascii = 1;
|
| 829 |
}
|
| 830 |
if (!in_ascii)
|
| 831 |
{
|
| 832 |
break;
|
| 833 |
}
|
| 834 |
}
|
| 835 |
if (i == 6 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 59 && tmp[4] == 50 && tmp[5] == 126) // Xterm
|
| 836 |
{
|
| 837 |
in_ascii = 0;
|
| 838 |
switch (tmp[2])
|
| 839 |
{
|
| 840 |
case 48:
|
| 841 |
out = KEY_SHIFT_F9;
|
| 842 |
break;
|
| 843 |
case 49:
|
| 844 |
out = KEY_SHIFT_F10;
|
| 845 |
break;
|
| 846 |
case 51:
|
| 847 |
out = KEY_SHIFT_F11;
|
| 848 |
break;
|
| 849 |
case 52:
|
| 850 |
out = KEY_SHIFT_F12;
|
| 851 |
break;
|
| 852 |
default:
|
| 853 |
in_ascii = 1;
|
| 854 |
}
|
| 855 |
if (!in_ascii)
|
| 856 |
{
|
| 857 |
break;
|
| 858 |
}
|
| 859 |
}
|
| 860 |
|
| 861 |
if (c == 'm')
|
| 862 |
{
|
| 863 |
in_ascii = 0;
|
| 864 |
}
|
| 865 |
continue;
|
| 866 |
}
|
| 867 |
|
| 868 |
out = ((int)c + 256) % 256;
|
| 869 |
break;
|
| 870 |
}
|
| 871 |
|
| 872 |
// For ESC key
|
| 873 |
if (out == 0 && in_esc)
|
| 874 |
{
|
| 875 |
out = KEY_ESC;
|
| 876 |
}
|
| 877 |
|
| 878 |
// for debug
|
| 879 |
#ifdef _DEBUG
|
| 880 |
if (out != KEY_TIMEOUT && out != KEY_NULL)
|
| 881 |
{
|
| 882 |
log_error("Debug: -->[0x %x]\n", out);
|
| 883 |
}
|
| 884 |
#endif
|
| 885 |
|
| 886 |
return out;
|
| 887 |
}
|
| 888 |
|
| 889 |
int igetch_t(int sec)
|
| 890 |
{
|
| 891 |
int ch;
|
| 892 |
time_t t_begin = time(NULL);
|
| 893 |
|
| 894 |
do
|
| 895 |
{
|
| 896 |
ch = igetch(100);
|
| 897 |
} while (!SYS_server_exit && ch == KEY_TIMEOUT && (time(NULL) - t_begin < sec));
|
| 898 |
|
| 899 |
return ch;
|
| 900 |
}
|
| 901 |
|
| 902 |
void igetch_reset()
|
| 903 |
{
|
| 904 |
int ch;
|
| 905 |
do
|
| 906 |
{
|
| 907 |
ch = igetch(100);
|
| 908 |
} while (ch != KEY_NULL && ch != KEY_TIMEOUT);
|
| 909 |
}
|
| 910 |
|
| 911 |
int io_buf_conv(iconv_t cd, char *p_buf, int *p_buf_len, int *p_buf_offset, char *p_conv, size_t conv_size, int *p_conv_len)
|
| 912 |
{
|
| 913 |
char *in_buf;
|
| 914 |
char *out_buf;
|
| 915 |
size_t in_bytes;
|
| 916 |
size_t out_bytes;
|
| 917 |
int ret;
|
| 918 |
int in_control = 0;
|
| 919 |
size_t i = 0;
|
| 920 |
|
| 921 |
if (cd == NULL || p_buf == NULL || p_buf_len == NULL || p_buf_offset == NULL || p_conv == NULL || p_conv_len == NULL)
|
| 922 |
{
|
| 923 |
log_error("NULL pointer error\n");
|
| 924 |
return -1;
|
| 925 |
}
|
| 926 |
|
| 927 |
in_buf = p_buf + *p_buf_offset;
|
| 928 |
in_bytes = (size_t)(*p_buf_len - *p_buf_offset);
|
| 929 |
out_buf = p_conv + *p_conv_len;
|
| 930 |
out_bytes = conv_size - (size_t)(*p_conv_len);
|
| 931 |
|
| 932 |
while (in_bytes > 0)
|
| 933 |
{
|
| 934 |
if ((unsigned char)(*in_buf) == KEY_CONTROL)
|
| 935 |
{
|
| 936 |
if (in_control == 0)
|
| 937 |
{
|
| 938 |
in_control = 1;
|
| 939 |
i = 0;
|
| 940 |
}
|
| 941 |
}
|
| 942 |
|
| 943 |
if (in_control)
|
| 944 |
{
|
| 945 |
if (out_bytes <= 0)
|
| 946 |
{
|
| 947 |
log_error("No enough free space in p_conv, conv_len=%d, conv_size=%d\n", *p_conv_len, conv_size);
|
| 948 |
return -2;
|
| 949 |
}
|
| 950 |
|
| 951 |
*out_buf = *in_buf;
|
| 952 |
in_buf++;
|
| 953 |
out_buf++;
|
| 954 |
in_bytes--;
|
| 955 |
out_bytes--;
|
| 956 |
|
| 957 |
(*p_buf_offset)++;
|
| 958 |
*p_conv_len = (int)(conv_size - out_bytes);
|
| 959 |
|
| 960 |
i++;
|
| 961 |
if (i >= 2)
|
| 962 |
{
|
| 963 |
in_control = 0;
|
| 964 |
}
|
| 965 |
continue;
|
| 966 |
}
|
| 967 |
|
| 968 |
ret = (int)iconv(cd, &in_buf, &in_bytes, &out_buf, &out_bytes);
|
| 969 |
if (ret == -1)
|
| 970 |
{
|
| 971 |
if (errno == EINVAL) // Incomplete
|
| 972 |
{
|
| 973 |
#ifdef _DEBUG
|
| 974 |
log_error("iconv(inbytes=%d, outbytes=%d) error: EINVAL, in_buf[0]=%d\n", in_bytes, out_bytes, in_buf[0]);
|
| 975 |
#endif
|
| 976 |
if (p_buf != in_buf)
|
| 977 |
{
|
| 978 |
*p_buf_len = (int)(p_buf + *p_buf_len - in_buf);
|
| 979 |
*p_buf_offset = 0;
|
| 980 |
*p_conv_len = (int)(conv_size - out_bytes);
|
| 981 |
memmove(p_buf, in_buf, (size_t)(*p_buf_len));
|
| 982 |
}
|
| 983 |
|
| 984 |
break;
|
| 985 |
}
|
| 986 |
else if (errno == E2BIG)
|
| 987 |
{
|
| 988 |
log_error("iconv(inbytes=%d, outbytes=%d) error: E2BIG\n", in_bytes, out_bytes);
|
| 989 |
return -1;
|
| 990 |
}
|
| 991 |
else if (errno == EILSEQ)
|
| 992 |
{
|
| 993 |
if (in_bytes > out_bytes || out_bytes <= 0)
|
| 994 |
{
|
| 995 |
log_error("iconv(inbytes=%d, outbytes=%d) error: EILSEQ and E2BIG\n", in_bytes, out_bytes);
|
| 996 |
return -2;
|
| 997 |
}
|
| 998 |
|
| 999 |
// reset in_bytes when "//IGNORE" is applied
|
| 1000 |
if (in_bytes == 0)
|
| 1001 |
{
|
| 1002 |
in_bytes = (size_t)(*p_buf_len - *p_buf_offset);
|
| 1003 |
}
|
| 1004 |
|
| 1005 |
*out_buf = *in_buf;
|
| 1006 |
in_buf++;
|
| 1007 |
out_buf++;
|
| 1008 |
in_bytes--;
|
| 1009 |
out_bytes--;
|
| 1010 |
|
| 1011 |
continue;
|
| 1012 |
}
|
| 1013 |
}
|
| 1014 |
else
|
| 1015 |
{
|
| 1016 |
*p_buf_len = 0;
|
| 1017 |
*p_buf_offset = 0;
|
| 1018 |
*p_conv_len = (int)(conv_size - out_bytes);
|
| 1019 |
|
| 1020 |
break;
|
| 1021 |
}
|
| 1022 |
}
|
| 1023 |
|
| 1024 |
return 0;
|
| 1025 |
}
|
| 1026 |
|
| 1027 |
int io_conv_init(const char *charset)
|
| 1028 |
{
|
| 1029 |
char tocode[32];
|
| 1030 |
|
| 1031 |
if (charset == NULL)
|
| 1032 |
{
|
| 1033 |
log_error("NULL pointer error\n");
|
| 1034 |
return -1;
|
| 1035 |
}
|
| 1036 |
|
| 1037 |
io_conv_cleanup();
|
| 1038 |
|
| 1039 |
strncpy(stdio_charset, charset, sizeof(stdio_charset) - 1);
|
| 1040 |
stdio_charset[sizeof(stdio_charset) - 1] = '\0';
|
| 1041 |
|
| 1042 |
snprintf(tocode, sizeof(tocode), "%s%s", BBS_DEFAULT_CHARSET,
|
| 1043 |
(strcasecmp(stdio_charset, BBS_DEFAULT_CHARSET) == 0 ? "" : "//IGNORE"));
|
| 1044 |
stdin_cd = iconv_open(tocode, stdio_charset);
|
| 1045 |
if (stdin_cd == (iconv_t)(-1))
|
| 1046 |
{
|
| 1047 |
log_error("iconv_open(%s->%s) error: %d\n", stdio_charset, tocode, errno);
|
| 1048 |
return -2;
|
| 1049 |
}
|
| 1050 |
|
| 1051 |
snprintf(tocode, sizeof(tocode), "%s%s", stdio_charset,
|
| 1052 |
(strcasecmp(BBS_DEFAULT_CHARSET, stdio_charset) == 0 ? "" : "//TRANSLIT"));
|
| 1053 |
stdout_cd = iconv_open(tocode, BBS_DEFAULT_CHARSET);
|
| 1054 |
if (stdout_cd == (iconv_t)(-1))
|
| 1055 |
{
|
| 1056 |
log_error("iconv_open(%s->%s) error: %d\n", BBS_DEFAULT_CHARSET, tocode, errno);
|
| 1057 |
iconv_close(stdin_cd);
|
| 1058 |
return -2;
|
| 1059 |
}
|
| 1060 |
|
| 1061 |
return 0;
|
| 1062 |
}
|
| 1063 |
|
| 1064 |
int io_conv_cleanup(void)
|
| 1065 |
{
|
| 1066 |
if (stdin_cd != NULL)
|
| 1067 |
{
|
| 1068 |
iconv_close(stdin_cd);
|
| 1069 |
stdin_cd = NULL;
|
| 1070 |
}
|
| 1071 |
if (stdout_cd != NULL)
|
| 1072 |
{
|
| 1073 |
iconv_close(stdout_cd);
|
| 1074 |
stdout_cd = NULL;
|
| 1075 |
}
|
| 1076 |
|
| 1077 |
return 0;
|
| 1078 |
}
|
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