| 1 |
/***************************************************************************
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| 2 |
io.c - description
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| 3 |
-------------------
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| 4 |
Copyright : (C) 2004-2025 by Leaflet
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| 5 |
Email : leaflet@leafok.com
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***************************************************************************/
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/***************************************************************************
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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 3 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "io.h"
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#include "log.h"
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#include "common.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <time.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/select.h>
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#include <sys/ioctl.h>
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#include <sys/epoll.h>
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static char stdout_buf[BUFSIZ];
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static int stdout_buf_len = 0;
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static int stdout_buf_offset = 0;
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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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| 52 |
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()
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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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while (stdout_buf_offset < stdout_buf_len && !SYS_server_exit) // write until complete or error
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{
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ret = (int)write(STDOUT_FILENO, stdout_buf + stdout_buf_offset, (size_t)(stdout_buf_len - stdout_buf_offset));
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if (ret < 0)
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{
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| 153 |
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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log_error("write(STDOUT) error (%d)\n", errno);
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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_buf_offset += ret;
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if (stdout_buf_offset >= stdout_buf_len) // flush buffer completely
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{
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ret = 0;
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stdout_buf_offset = 0;
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stdout_buf_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 input buffer
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static unsigned char buf[LINE_BUFFER_LEN];
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static int len = 0;
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static int pos = 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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| 215 |
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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| 220 |
int flags;
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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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| 228 |
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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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| 235 |
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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| 241 |
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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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loop = 1;
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| 246 |
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while (loop && pos >= len && !SYS_server_exit)
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{
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len = 0;
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pos = 0;
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nfds = epoll_wait(epollfd, events, MAX_EVENTS, timeout);
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if (nfds < 0)
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{
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| 256 |
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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| 260 |
}
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| 261 |
continue;
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| 262 |
}
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| 263 |
else if (nfds == 0) // timeout
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{
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out = KEY_TIMEOUT;
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break;
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| 267 |
}
|
| 268 |
|
| 269 |
for (int i = 0; i < nfds; i++)
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| 270 |
{
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| 271 |
if (events[i].data.fd == STDIN_FILENO)
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{
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| 273 |
while (len < sizeof(buf) && !SYS_server_exit) // read until complete or error
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{
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ret = (int)read(STDIN_FILENO, buf + len, sizeof(buf) - (size_t)len);
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| 276 |
if (ret < 0)
|
| 277 |
{
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| 278 |
if (errno == EAGAIN || errno == EWOULDBLOCK)
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{
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| 280 |
out = 0;
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loop = 0;
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| 282 |
break;
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| 283 |
}
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| 284 |
else if (errno == EINTR)
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| 285 |
{
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| 286 |
continue;
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| 287 |
}
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| 288 |
else
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| 289 |
{
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| 290 |
log_error("read(STDIN) error (%d)\n", errno);
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loop = 0;
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break;
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| 293 |
}
|
| 294 |
}
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| 295 |
else if (ret == 0) // broken pipe
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{
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| 297 |
loop = 0;
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| 298 |
break;
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| 299 |
}
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| 300 |
else
|
| 301 |
{
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| 302 |
len += ret;
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| 303 |
continue;
|
| 304 |
}
|
| 305 |
}
|
| 306 |
}
|
| 307 |
}
|
| 308 |
|
| 309 |
// For debug
|
| 310 |
// for (int j = pos; j < len; j++)
|
| 311 |
// {
|
| 312 |
// log_std("Debug: <--[%u]\n", (buf[j] + 256) % 256);
|
| 313 |
// }
|
| 314 |
}
|
| 315 |
|
| 316 |
fcntl(STDIN_FILENO, F_SETFL, flags);
|
| 317 |
|
| 318 |
while (pos < len)
|
| 319 |
{
|
| 320 |
unsigned char c = buf[pos++];
|
| 321 |
|
| 322 |
if (c == KEY_CONTROL)
|
| 323 |
{
|
| 324 |
if (in_control == 0)
|
| 325 |
{
|
| 326 |
in_control = 1;
|
| 327 |
i = 0;
|
| 328 |
continue;
|
| 329 |
}
|
| 330 |
}
|
| 331 |
|
| 332 |
if (in_control)
|
| 333 |
{
|
| 334 |
tmp[i++] = c;
|
| 335 |
if (i >= 2)
|
| 336 |
{
|
| 337 |
out = (int)tmp[0] * 256 + tmp[1];
|
| 338 |
in_control = 0;
|
| 339 |
break;
|
| 340 |
}
|
| 341 |
continue;
|
| 342 |
}
|
| 343 |
|
| 344 |
if (c == ESC_KEY)
|
| 345 |
{
|
| 346 |
if (in_esc == 0)
|
| 347 |
{
|
| 348 |
in_esc = 1;
|
| 349 |
in_ascii = 1;
|
| 350 |
i = 0;
|
| 351 |
continue;
|
| 352 |
}
|
| 353 |
else
|
| 354 |
{
|
| 355 |
out = ESC_KEY;
|
| 356 |
in_esc = 0;
|
| 357 |
break;
|
| 358 |
}
|
| 359 |
}
|
| 360 |
|
| 361 |
in_esc = 0;
|
| 362 |
|
| 363 |
if (in_ascii)
|
| 364 |
{
|
| 365 |
tmp[i++] = c;
|
| 366 |
if (i == 2 && (tmp[0] == 79 || tmp[0] == 91))
|
| 367 |
{
|
| 368 |
in_ascii = 0;
|
| 369 |
switch (tmp[1])
|
| 370 |
{
|
| 371 |
case 65:
|
| 372 |
out = KEY_UP;
|
| 373 |
break;
|
| 374 |
case 66:
|
| 375 |
out = KEY_DOWN;
|
| 376 |
break;
|
| 377 |
case 67:
|
| 378 |
out = KEY_RIGHT;
|
| 379 |
break;
|
| 380 |
case 68:
|
| 381 |
out = KEY_LEFT;
|
| 382 |
break;
|
| 383 |
default:
|
| 384 |
in_ascii = 1;
|
| 385 |
}
|
| 386 |
if (!in_ascii)
|
| 387 |
{
|
| 388 |
break;
|
| 389 |
}
|
| 390 |
}
|
| 391 |
if (i == 2 && tmp[0] == 91) // Fterm
|
| 392 |
{
|
| 393 |
in_ascii = 0;
|
| 394 |
switch (tmp[1])
|
| 395 |
{
|
| 396 |
case 86:
|
| 397 |
out = KEY_SHIFT_F1;
|
| 398 |
break;
|
| 399 |
case 90:
|
| 400 |
out = KEY_SHIFT_F2;
|
| 401 |
break;
|
| 402 |
case 97:
|
| 403 |
out = KEY_SHIFT_F3;
|
| 404 |
break;
|
| 405 |
case 98:
|
| 406 |
out = KEY_SHIFT_F4;
|
| 407 |
break;
|
| 408 |
case 99:
|
| 409 |
out = KEY_SHIFT_F5;
|
| 410 |
break;
|
| 411 |
case 100:
|
| 412 |
out = KEY_SHIFT_F6;
|
| 413 |
break;
|
| 414 |
case 101:
|
| 415 |
out = KEY_SHIFT_F7;
|
| 416 |
break;
|
| 417 |
case 102:
|
| 418 |
out = KEY_SHIFT_F8;
|
| 419 |
break;
|
| 420 |
case 103:
|
| 421 |
out = KEY_SHIFT_F9;
|
| 422 |
break;
|
| 423 |
case 104:
|
| 424 |
out = KEY_SHIFT_F10;
|
| 425 |
break;
|
| 426 |
case 107:
|
| 427 |
out = KEY_CTRL_F1;
|
| 428 |
break;
|
| 429 |
case 108:
|
| 430 |
out = KEY_CTRL_F2;
|
| 431 |
break;
|
| 432 |
case 109:
|
| 433 |
out = KEY_CTRL_F3;
|
| 434 |
break;
|
| 435 |
case 112:
|
| 436 |
out = KEY_CTRL_F6;
|
| 437 |
break;
|
| 438 |
case 113:
|
| 439 |
out = KEY_CTRL_F7;
|
| 440 |
break;
|
| 441 |
case 114:
|
| 442 |
out = KEY_CTRL_F8;
|
| 443 |
break;
|
| 444 |
case 115:
|
| 445 |
out = KEY_CTRL_F9;
|
| 446 |
break;
|
| 447 |
case 116:
|
| 448 |
out = KEY_CTRL_F10;
|
| 449 |
break;
|
| 450 |
default:
|
| 451 |
in_ascii = 1;
|
| 452 |
}
|
| 453 |
if (!in_ascii)
|
| 454 |
{
|
| 455 |
break;
|
| 456 |
}
|
| 457 |
}
|
| 458 |
if (i == 2 && tmp[0] == 79) // Xterm
|
| 459 |
{
|
| 460 |
in_ascii = 0;
|
| 461 |
switch (tmp[1])
|
| 462 |
{
|
| 463 |
case 80:
|
| 464 |
out = KEY_F1;
|
| 465 |
break;
|
| 466 |
case 81:
|
| 467 |
out = KEY_F2;
|
| 468 |
break;
|
| 469 |
case 82:
|
| 470 |
out = KEY_F3;
|
| 471 |
break;
|
| 472 |
case 83:
|
| 473 |
out = KEY_F4;
|
| 474 |
break;
|
| 475 |
default:
|
| 476 |
in_ascii = 1;
|
| 477 |
}
|
| 478 |
if (!in_ascii)
|
| 479 |
{
|
| 480 |
break;
|
| 481 |
}
|
| 482 |
}
|
| 483 |
if (i == 3 && tmp[0] == 91 && tmp[2] == 126)
|
| 484 |
{
|
| 485 |
in_ascii = 0;
|
| 486 |
switch (tmp[1])
|
| 487 |
{
|
| 488 |
case 49:
|
| 489 |
out = KEY_HOME;
|
| 490 |
break;
|
| 491 |
case 51:
|
| 492 |
out = KEY_DEL;
|
| 493 |
break;
|
| 494 |
case 52:
|
| 495 |
out = KEY_END;
|
| 496 |
break;
|
| 497 |
case 53:
|
| 498 |
out = KEY_PGUP;
|
| 499 |
break;
|
| 500 |
case 54:
|
| 501 |
out = KEY_PGDN;
|
| 502 |
break;
|
| 503 |
default:
|
| 504 |
in_ascii = 1;
|
| 505 |
}
|
| 506 |
if (!in_ascii)
|
| 507 |
{
|
| 508 |
break;
|
| 509 |
}
|
| 510 |
}
|
| 511 |
if (i == 4 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 126) // Fterm
|
| 512 |
{
|
| 513 |
in_ascii = 0;
|
| 514 |
switch (tmp[2])
|
| 515 |
{
|
| 516 |
case 49:
|
| 517 |
out = KEY_F1;
|
| 518 |
break;
|
| 519 |
case 50:
|
| 520 |
out = KEY_F2;
|
| 521 |
break;
|
| 522 |
case 51:
|
| 523 |
out = KEY_F3;
|
| 524 |
break;
|
| 525 |
case 52:
|
| 526 |
out = KEY_F4;
|
| 527 |
break;
|
| 528 |
case 53:
|
| 529 |
out = KEY_F5;
|
| 530 |
break;
|
| 531 |
case 55:
|
| 532 |
out = KEY_F6;
|
| 533 |
break;
|
| 534 |
case 56:
|
| 535 |
out = KEY_F7;
|
| 536 |
break;
|
| 537 |
case 57:
|
| 538 |
out = KEY_F8;
|
| 539 |
break;
|
| 540 |
default:
|
| 541 |
in_ascii = 1;
|
| 542 |
}
|
| 543 |
if (!in_ascii)
|
| 544 |
{
|
| 545 |
break;
|
| 546 |
}
|
| 547 |
}
|
| 548 |
if (i == 4 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 126) // Fterm
|
| 549 |
{
|
| 550 |
in_ascii = 0;
|
| 551 |
switch (tmp[2])
|
| 552 |
{
|
| 553 |
case 48:
|
| 554 |
out = KEY_F9;
|
| 555 |
break;
|
| 556 |
case 49:
|
| 557 |
out = KEY_F10;
|
| 558 |
break;
|
| 559 |
case 50:
|
| 560 |
out = KEY_F11; // Fterm
|
| 561 |
break;
|
| 562 |
case 51:
|
| 563 |
out = KEY_F11; // Xterm
|
| 564 |
break;
|
| 565 |
case 52:
|
| 566 |
out = KEY_F12; // Xterm
|
| 567 |
break;
|
| 568 |
default:
|
| 569 |
in_ascii = 1;
|
| 570 |
}
|
| 571 |
if (!in_ascii)
|
| 572 |
{
|
| 573 |
break;
|
| 574 |
}
|
| 575 |
}
|
| 576 |
if (i == 5 && tmp[0] == 91 && tmp[1] == 49 && tmp[2] == 59 && tmp[3] == 53) // Xterm
|
| 577 |
{
|
| 578 |
in_ascii = 0;
|
| 579 |
switch (tmp[4])
|
| 580 |
{
|
| 581 |
case 80:
|
| 582 |
out = KEY_CTRL_F1;
|
| 583 |
break;
|
| 584 |
case 81:
|
| 585 |
out = KEY_CTRL_F2;
|
| 586 |
break;
|
| 587 |
case 82:
|
| 588 |
out = KEY_CTRL_F3;
|
| 589 |
break;
|
| 590 |
default:
|
| 591 |
in_ascii = 1;
|
| 592 |
}
|
| 593 |
if (!in_ascii)
|
| 594 |
{
|
| 595 |
break;
|
| 596 |
}
|
| 597 |
}
|
| 598 |
if (i == 6 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 59 && tmp[4] == 53 && tmp[5] == 126) // Xterm
|
| 599 |
{
|
| 600 |
in_ascii = 0;
|
| 601 |
switch (tmp[2])
|
| 602 |
{
|
| 603 |
case 53:
|
| 604 |
out = KEY_CTRL_F5;
|
| 605 |
break;
|
| 606 |
case 55:
|
| 607 |
out = KEY_CTRL_F6;
|
| 608 |
break;
|
| 609 |
case 56:
|
| 610 |
out = KEY_CTRL_F7;
|
| 611 |
break;
|
| 612 |
case 57:
|
| 613 |
out = KEY_CTRL_F8;
|
| 614 |
break;
|
| 615 |
default:
|
| 616 |
in_ascii = 1;
|
| 617 |
}
|
| 618 |
if (!in_ascii)
|
| 619 |
{
|
| 620 |
break;
|
| 621 |
}
|
| 622 |
}
|
| 623 |
if (i == 6 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 59 && tmp[4] == 53 && tmp[5] == 126) // Xterm
|
| 624 |
{
|
| 625 |
in_ascii = 0;
|
| 626 |
switch (tmp[2])
|
| 627 |
{
|
| 628 |
case 48:
|
| 629 |
out = KEY_CTRL_F9;
|
| 630 |
break;
|
| 631 |
case 49:
|
| 632 |
out = KEY_CTRL_F10;
|
| 633 |
break;
|
| 634 |
case 51:
|
| 635 |
out = KEY_CTRL_F11;
|
| 636 |
break;
|
| 637 |
case 52:
|
| 638 |
out = KEY_CTRL_F12;
|
| 639 |
break;
|
| 640 |
default:
|
| 641 |
in_ascii = 1;
|
| 642 |
}
|
| 643 |
if (!in_ascii)
|
| 644 |
{
|
| 645 |
break;
|
| 646 |
}
|
| 647 |
}
|
| 648 |
if (i == 5 && tmp[0] == 91 && tmp[1] == 49 && tmp[2] == 59 && tmp[3] == 50) // Xterm
|
| 649 |
{
|
| 650 |
in_ascii = 0;
|
| 651 |
switch (tmp[4])
|
| 652 |
{
|
| 653 |
case 80:
|
| 654 |
out = KEY_SHIFT_F1;
|
| 655 |
break;
|
| 656 |
case 81:
|
| 657 |
out = KEY_SHIFT_F2;
|
| 658 |
break;
|
| 659 |
case 82:
|
| 660 |
out = KEY_SHIFT_F3;
|
| 661 |
break;
|
| 662 |
case 83:
|
| 663 |
out = KEY_SHIFT_F4;
|
| 664 |
break;
|
| 665 |
default:
|
| 666 |
in_ascii = 1;
|
| 667 |
}
|
| 668 |
if (!in_ascii)
|
| 669 |
{
|
| 670 |
break;
|
| 671 |
}
|
| 672 |
}
|
| 673 |
if (i == 6 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 59 && tmp[4] == 50 && tmp[5] == 126) // Xterm
|
| 674 |
{
|
| 675 |
in_ascii = 0;
|
| 676 |
switch (tmp[2])
|
| 677 |
{
|
| 678 |
case 53:
|
| 679 |
out = KEY_SHIFT_F5;
|
| 680 |
break;
|
| 681 |
case 55:
|
| 682 |
out = KEY_SHIFT_F6;
|
| 683 |
break;
|
| 684 |
case 56:
|
| 685 |
out = KEY_SHIFT_F7;
|
| 686 |
break;
|
| 687 |
case 57:
|
| 688 |
out = KEY_SHIFT_F8;
|
| 689 |
break;
|
| 690 |
default:
|
| 691 |
in_ascii = 1;
|
| 692 |
}
|
| 693 |
if (!in_ascii)
|
| 694 |
{
|
| 695 |
break;
|
| 696 |
}
|
| 697 |
}
|
| 698 |
if (i == 6 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 59 && tmp[4] == 50 && tmp[5] == 126) // Xterm
|
| 699 |
{
|
| 700 |
in_ascii = 0;
|
| 701 |
switch (tmp[2])
|
| 702 |
{
|
| 703 |
case 48:
|
| 704 |
out = KEY_SHIFT_F9;
|
| 705 |
break;
|
| 706 |
case 49:
|
| 707 |
out = KEY_SHIFT_F10;
|
| 708 |
break;
|
| 709 |
case 51:
|
| 710 |
out = KEY_SHIFT_F11;
|
| 711 |
break;
|
| 712 |
case 52:
|
| 713 |
out = KEY_SHIFT_F12;
|
| 714 |
break;
|
| 715 |
default:
|
| 716 |
in_ascii = 1;
|
| 717 |
}
|
| 718 |
if (!in_ascii)
|
| 719 |
{
|
| 720 |
break;
|
| 721 |
}
|
| 722 |
}
|
| 723 |
|
| 724 |
if (c == 'm')
|
| 725 |
{
|
| 726 |
in_ascii = 0;
|
| 727 |
}
|
| 728 |
continue;
|
| 729 |
}
|
| 730 |
|
| 731 |
out = ((int)c + 256) % 256;
|
| 732 |
break;
|
| 733 |
}
|
| 734 |
|
| 735 |
if (close(epollfd) < 0)
|
| 736 |
{
|
| 737 |
log_error("close(epoll) error (%d)\n");
|
| 738 |
}
|
| 739 |
|
| 740 |
// For ESC key
|
| 741 |
if (out == 0 && in_esc)
|
| 742 |
{
|
| 743 |
out = KEY_ESC;
|
| 744 |
}
|
| 745 |
|
| 746 |
// for debug
|
| 747 |
// if (out != KEY_TIMEOUT && out != KEY_NULL)
|
| 748 |
// {
|
| 749 |
// log_std ("Debug: -->[0x %x]\n", out);
|
| 750 |
// }
|
| 751 |
|
| 752 |
return out;
|
| 753 |
}
|
| 754 |
|
| 755 |
int igetch_t(int sec)
|
| 756 |
{
|
| 757 |
int ch;
|
| 758 |
time_t t_begin = time(0);
|
| 759 |
|
| 760 |
do
|
| 761 |
{
|
| 762 |
ch = igetch(100);
|
| 763 |
} while (!SYS_server_exit && ch == KEY_TIMEOUT && (time(0) - t_begin < sec));
|
| 764 |
|
| 765 |
return ch;
|
| 766 |
}
|
| 767 |
|
| 768 |
void igetch_reset()
|
| 769 |
{
|
| 770 |
int ch;
|
| 771 |
do
|
| 772 |
{
|
| 773 |
ch = igetch(0);
|
| 774 |
} while (ch != KEY_NULL && ch != KEY_TIMEOUT);
|
| 775 |
}
|
Parent Directory
| 
Revision Log