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/*************************************************************************** |
/* SPDX-License-Identifier: GPL-3.0-or-later */ |
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io.c - description |
/* |
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------------------- |
* io |
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Copyright : (C) 2004-2025 by Leaflet |
* - basic terminal-based user input / output features |
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Email : leaflet@leafok.com |
* |
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***************************************************************************/ |
* Copyright (C) 2004-2025 Leaflet <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 "common.h" |
#include "common.h" |
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#include "io.h" |
#include "io.h" |
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int igetch(int timeout) |
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]; |
struct epoll_event ev, events[MAX_EVENTS]; |
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int nfds, epollfd; |
int nfds, epollfd; |
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int ret; |
int ret; |
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break; |
break; |
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} |
} |
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nfds = epoll_wait(epollfd, events, MAX_EVENTS, timeout); |
if (!stdin_read_wait) |
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if (nfds < 0) |
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{ |
{ |
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if (errno != EINTR) |
nfds = epoll_wait(epollfd, events, MAX_EVENTS, timeout); |
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if (nfds < 0) |
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{ |
{ |
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log_error("epoll_wait() error (%d)\n", errno); |
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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out = KEY_TIMEOUT; |
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break; |
break; |
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} |
} |
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continue; |
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} |
for (int i = 0; i < nfds; i++) |
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else if (nfds == 0) // timeout |
{ |
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{ |
if (events[i].data.fd == STDIN_FILENO) |
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out = KEY_TIMEOUT; |
{ |
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break; |
stdin_read_wait = 1; |
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} |
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} |
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} |
} |
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for (int i = 0; i < nfds; i++) |
if (stdin_read_wait) |
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{ |
{ |
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if (events[i].data.fd == STDIN_FILENO) |
while (stdin_buf_len < sizeof(stdin_buf) && !SYS_server_exit) // read until complete or error |
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{ |
{ |
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while (stdin_buf_len < sizeof(stdin_buf) && !SYS_server_exit) // read until complete or error |
if (SSH_v2) |
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{ |
{ |
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if (SSH_v2) |
ret = ssh_channel_read_nonblocking(SSH_channel, stdin_buf + stdin_buf_len, sizeof(stdin_buf) - (uint32_t)stdin_buf_len, 0); |
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if (ret == SSH_ERROR) |
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{ |
{ |
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ret = ssh_channel_read_nonblocking(SSH_channel, stdin_buf + stdin_buf_len, sizeof(stdin_buf) - (uint32_t)stdin_buf_len, 0); |
log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session)); |
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if (ret == SSH_ERROR) |
loop = 0; |
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{ |
break; |
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log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session)); |
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loop = 0; |
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break; |
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} |
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else if (ret == SSH_EOF) |
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{ |
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loop = 0; |
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break; |
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} |
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else if (ret == 0) |
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{ |
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out = 0; |
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loop = 0; |
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break; |
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} |
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} |
} |
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else |
else if (ret == SSH_EOF) |
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{ |
{ |
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ret = (int)read(STDIN_FILENO, stdin_buf + stdin_buf_len, sizeof(stdin_buf) - (size_t)stdin_buf_len); |
stdin_read_wait = 0; |
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loop = 0; |
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break; |
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} |
} |
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if (ret < 0) |
else if (ret == 0) |
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{ |
{ |
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if (errno == EAGAIN || errno == EWOULDBLOCK) |
out = 0; |
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{ |
stdin_read_wait = 0; |
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out = 0; |
loop = 0; |
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loop = 0; |
break; |
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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("read(STDIN) error (%d)\n", errno); |
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#endif |
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loop = 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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else |
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{ |
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ret = (int)read(STDIN_FILENO, stdin_buf + stdin_buf_len, sizeof(stdin_buf) - (size_t)stdin_buf_len); |
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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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out = 0; |
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stdin_read_wait = 0; |
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loop = 0; |
loop = 0; |
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break; |
break; |
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} |
} |
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else |
else if (errno == EINTR) |
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{ |
{ |
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stdin_buf_len += ret; |
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continue; |
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("read(STDIN) error (%d)\n", errno); |
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#endif |
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loop = 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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stdin_read_wait = 0; |
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loop = 0; |
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break; |
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} |
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else |
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{ |
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stdin_buf_len += ret; |
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continue; |
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} |
} |
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} |
} |
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} |
} |
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