/[LeafOK_CVS]/lbbs/src/io.c
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Revision 1.48 - (hide annotations)
Fri Jun 27 13:01:24 2025 UTC (8 months, 2 weeks ago) by sysadm
Branch: MAIN
Changes since 1.47: +96 -95 lines
Content type: text/x-csrc 
Do not create epoll and perform io control if buffer is not empty
1 sysadm 1.1 /***************************************************************************
2 sysadm 1.14 io.c - description
3     -------------------
4 sysadm 1.20 Copyright : (C) 2004-2025 by Leaflet
5     Email : leaflet@leafok.com
6 sysadm 1.1 ***************************************************************************/
7    
8     /***************************************************************************
9     * *
10     * This program is free software; you can redistribute it and/or modify *
11     * it under the terms of the GNU General Public License as published by *
12 sysadm 1.20 * the Free Software Foundation; either version 3 of the License, or *
13 sysadm 1.1 * (at your option) any later version. *
14     * *
15     ***************************************************************************/
16    
17 sysadm 1.47 #include "common.h"
18 sysadm 1.1 #include "io.h"
19 sysadm 1.16 #include "log.h"
20 sysadm 1.22 #include <errno.h>
21 sysadm 1.47 #include <fcntl.h>
22     #include <stdarg.h>
23 sysadm 1.1 #include <stdio.h>
24 sysadm 1.28 #include <string.h>
25 sysadm 1.9 #include <time.h>
26     #include <unistd.h>
27 sysadm 1.47 #include <sys/epoll.h>
28     #include <sys/ioctl.h>
29 sysadm 1.22 #include <sys/select.h>
30 sysadm 1.47 #include <libssh/callbacks.h>
31 sysadm 1.39 #include <libssh/libssh.h>
32     #include <libssh/server.h>
33 sysadm 1.1
34 sysadm 1.28 static char stdout_buf[BUFSIZ];
35     static int stdout_buf_len = 0;
36 sysadm 1.30 static int stdout_buf_offset = 0;
37 sysadm 1.1
38 sysadm 1.14 int prints(const char *format, ...)
39 sysadm 1.1 {
40 sysadm 1.28 char buf[BUFSIZ];
41 sysadm 1.14 va_list args;
42 sysadm 1.28 int ret;
43 sysadm 1.1
44 sysadm 1.14 va_start(args, format);
45 sysadm 1.28 ret = vsnprintf(buf, sizeof(buf), format, args);
46 sysadm 1.14 va_end(args);
47 sysadm 1.1
48 sysadm 1.30 if (ret > 0)
49 sysadm 1.28 {
50 sysadm 1.30 if (stdout_buf_len + ret > BUFSIZ)
51     {
52     iflush();
53     }
54 sysadm 1.31
55 sysadm 1.30 if (stdout_buf_len + ret <= BUFSIZ)
56     {
57     memcpy(stdout_buf + stdout_buf_len, buf, (size_t)ret);
58     stdout_buf_len += ret;
59     }
60     else
61     {
62     errno = EAGAIN;
63     ret = (BUFSIZ - stdout_buf_len - ret);
64 sysadm 1.35 log_error("Output buffer is full, additional %d is required\n", ret);
65 sysadm 1.30 }
66 sysadm 1.28 }
67 sysadm 1.30
68     return ret;
69     }
70    
71     int outc(char c)
72     {
73     int ret;
74    
75     if (stdout_buf_len + 1 > BUFSIZ)
76 sysadm 1.28 {
77 sysadm 1.30 iflush();
78     }
79    
80     if (stdout_buf_len + 1 <= BUFSIZ)
81     {
82     stdout_buf[stdout_buf_len] = c;
83     stdout_buf_len++;
84     }
85     else
86     {
87     errno = EAGAIN;
88     ret = -1;
89 sysadm 1.28 }
90    
91     return ret;
92 sysadm 1.1 }
93    
94 sysadm 1.43 int iflush(void)
95 sysadm 1.1 {
96 sysadm 1.28 int flags;
97 sysadm 1.29 struct epoll_event ev, events[MAX_EVENTS];
98     int nfds, epollfd;
99 sysadm 1.30 int retry;
100 sysadm 1.28 int ret = 0;
101    
102 sysadm 1.29 epollfd = epoll_create1(0);
103     if (epollfd < 0)
104     {
105     log_error("epoll_create1() error (%d)\n", errno);
106     return -1;
107     }
108    
109     ev.events = EPOLLOUT;
110     ev.data.fd = STDOUT_FILENO;
111     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDOUT_FILENO, &ev) == -1)
112     {
113     log_error("epoll_ctl(STDOUT_FILENO) error (%d)\n", errno);
114 sysadm 1.31 if (close(epollfd) < 0)
115     {
116     log_error("close(epoll) error (%d)\n");
117     }
118 sysadm 1.29 return -1;
119     }
120    
121 sysadm 1.28 // Set STDOUT as non-blocking
122     flags = fcntl(STDOUT_FILENO, F_GETFL, 0);
123     fcntl(STDOUT_FILENO, F_SETFL, flags | O_NONBLOCK);
124    
125 sysadm 1.30 // Retry wait / flush for at most 3 times
126     retry = 3;
127     while (retry > 0 && !SYS_server_exit)
128 sysadm 1.28 {
129 sysadm 1.30 retry--;
130    
131 sysadm 1.29 nfds = epoll_wait(epollfd, events, MAX_EVENTS, 100); // 0.1 second
132 sysadm 1.28
133 sysadm 1.29 if (nfds < 0)
134 sysadm 1.28 {
135 sysadm 1.29 if (errno != EINTR)
136     {
137     log_error("epoll_wait() error (%d)\n", errno);
138     break;
139     }
140 sysadm 1.28 continue;
141     }
142 sysadm 1.29 else if (nfds == 0) // timeout
143 sysadm 1.28 {
144 sysadm 1.29 continue;
145 sysadm 1.28 }
146 sysadm 1.29
147     for (int i = 0; i < nfds; i++)
148 sysadm 1.28 {
149 sysadm 1.29 if (events[i].data.fd == STDOUT_FILENO)
150 sysadm 1.28 {
151 sysadm 1.30 while (stdout_buf_offset < stdout_buf_len && !SYS_server_exit) // write until complete or error
152 sysadm 1.28 {
153 sysadm 1.39 if (SSH_v2)
154     {
155     ret = ssh_channel_write(SSH_channel, stdout_buf + stdout_buf_offset, (uint32_t)(stdout_buf_len - stdout_buf_offset));
156     if (ret == SSH_ERROR)
157     {
158     log_error("ssh_channel_write() error: %s\n", ssh_get_error(SSH_session));
159     retry = 0;
160     break;
161     }
162     }
163     else
164     {
165     ret = (int)write(STDOUT_FILENO, stdout_buf + stdout_buf_offset, (size_t)(stdout_buf_len - stdout_buf_offset));
166     }
167 sysadm 1.29 if (ret < 0)
168     {
169     if (errno == EAGAIN || errno == EWOULDBLOCK)
170     {
171     break;
172     }
173     else if (errno == EINTR)
174     {
175     continue;
176     }
177     else
178     {
179 sysadm 1.46 #ifdef _DEBUG
180 sysadm 1.29 log_error("write(STDOUT) error (%d)\n", errno);
181 sysadm 1.46 #endif
182 sysadm 1.30 retry = 0;
183 sysadm 1.29 break;
184     }
185     }
186     else if (ret == 0) // broken pipe
187     {
188 sysadm 1.30 retry = 0;
189 sysadm 1.29 break;
190     }
191     else
192     {
193     stdout_buf_offset += ret;
194 sysadm 1.30 if (stdout_buf_offset >= stdout_buf_len) // flush buffer completely
195 sysadm 1.29 {
196     ret = 0;
197 sysadm 1.30 stdout_buf_offset = 0;
198 sysadm 1.29 stdout_buf_len = 0;
199 sysadm 1.30 retry = 0;
200 sysadm 1.29 break;
201     }
202     continue;
203     }
204 sysadm 1.28 }
205     }
206     }
207     }
208 sysadm 1.6
209 sysadm 1.28 // Restore STDOUT flags
210     fcntl(STDOUT_FILENO, F_SETFL, flags);
211 sysadm 1.6
212 sysadm 1.31 if (close(epollfd) < 0)
213     {
214     log_error("close(epoll) error (%d)\n");
215     }
216    
217 sysadm 1.28 return ret;
218 sysadm 1.1 }
219    
220 sysadm 1.31 int igetch(int timeout)
221 sysadm 1.1 {
222 sysadm 1.18 // static input buffer
223 sysadm 1.22 static unsigned char buf[LINE_BUFFER_LEN];
224 sysadm 1.31 static int len = 0;
225 sysadm 1.18 static int pos = 0;
226    
227 sysadm 1.29 struct epoll_event ev, events[MAX_EVENTS];
228     int nfds, epollfd;
229 sysadm 1.31 int ret;
230     int loop;
231 sysadm 1.21
232 sysadm 1.22 unsigned char tmp[LINE_BUFFER_LEN];
233 sysadm 1.31 int out = KEY_NULL;
234 sysadm 1.18 int in_esc = 0;
235     int in_ascii = 0;
236     int in_control = 0;
237     int i = 0;
238 sysadm 1.26 int flags;
239 sysadm 1.1
240 sysadm 1.48 if (pos >= len)
241 sysadm 1.29 {
242 sysadm 1.48 len = 0;
243     pos = 0;
244 sysadm 1.31
245 sysadm 1.48 epollfd = epoll_create1(0);
246     if (epollfd < 0)
247 sysadm 1.31 {
248 sysadm 1.48 log_error("epoll_create1() error (%d)\n", errno);
249     return -1;
250 sysadm 1.31 }
251 sysadm 1.9
252 sysadm 1.48 ev.events = EPOLLIN;
253     ev.data.fd = STDIN_FILENO;
254     if (epoll_ctl(epollfd, EPOLL_CTL_ADD, STDIN_FILENO, &ev) == -1)
255     {
256     log_error("epoll_ctl(STDIN_FILENO) error (%d)\n", errno);
257 sysadm 1.9
258 sysadm 1.48 if (close(epollfd) < 0)
259     {
260     log_error("close(epoll) error (%d)\n");
261     }
262     return -1;
263     }
264 sysadm 1.31
265 sysadm 1.48 flags = fcntl(STDIN_FILENO, F_GETFL, 0);
266     fcntl(STDIN_FILENO, F_SETFL, flags | O_NONBLOCK);
267 sysadm 1.31
268 sysadm 1.48 for (loop = 1; loop && !SYS_server_exit;)
269 sysadm 1.39 {
270 sysadm 1.48 if (SSH_v2 && ssh_channel_is_closed(SSH_channel))
271     {
272     log_error("SSH channel is closed\n");
273     loop = 0;
274     break;
275     }
276 sysadm 1.39
277 sysadm 1.48 nfds = epoll_wait(epollfd, events, MAX_EVENTS, timeout);
278 sysadm 1.9
279 sysadm 1.48 if (nfds < 0)
280     {
281     if (errno != EINTR)
282     {
283     log_error("epoll_wait() error (%d)\n", errno);
284     break;
285     }
286     continue;
287     }
288     else if (nfds == 0) // timeout
289 sysadm 1.21 {
290 sysadm 1.48 out = KEY_TIMEOUT;
291 sysadm 1.31 break;
292 sysadm 1.21 }
293    
294 sysadm 1.48 for (int i = 0; i < nfds; i++)
295 sysadm 1.26 {
296 sysadm 1.48 if (events[i].data.fd == STDIN_FILENO)
297 sysadm 1.26 {
298 sysadm 1.48 while (len < sizeof(buf) && !SYS_server_exit) // read until complete or error
299 sysadm 1.39 {
300 sysadm 1.48 if (SSH_v2)
301 sysadm 1.39 {
302 sysadm 1.48 ret = ssh_channel_read_nonblocking(SSH_channel, buf + len, sizeof(buf) - (uint32_t)len, 0);
303     if (ret == SSH_ERROR)
304     {
305     log_error("ssh_channel_read_nonblocking() error: %s\n", ssh_get_error(SSH_session));
306     loop = 0;
307     break;
308     }
309     else if (ret == SSH_EOF)
310     {
311     loop = 0;
312     break;
313     }
314     else if (ret == 0)
315     {
316     out = 0;
317     break; // Check whether channel is still open
318     }
319 sysadm 1.39 }
320 sysadm 1.48 else
321 sysadm 1.39 {
322 sysadm 1.48 ret = (int)read(STDIN_FILENO, buf + len, sizeof(buf) - (size_t)len);
323 sysadm 1.39 }
324 sysadm 1.48 if (ret < 0)
325 sysadm 1.39 {
326 sysadm 1.48 if (errno == EAGAIN || errno == EWOULDBLOCK)
327     {
328     out = 0;
329     loop = 0;
330     break;
331     }
332     else if (errno == EINTR)
333     {
334     continue;
335     }
336     else
337     {
338     #ifdef _DEBUG
339     log_error("read(STDIN) error (%d)\n", errno);
340     #endif
341     loop = 0;
342     break;
343     }
344 sysadm 1.39 }
345 sysadm 1.48 else if (ret == 0) // broken pipe
346 sysadm 1.29 {
347 sysadm 1.31 loop = 0;
348     break;
349 sysadm 1.29 }
350 sysadm 1.48 else
351 sysadm 1.29 {
352 sysadm 1.48 len += ret;
353 sysadm 1.29 continue;
354     }
355     }
356 sysadm 1.26 }
357     }
358 sysadm 1.48
359     // For debug
360     #ifdef _DEBUG
361     for (int j = pos; j < len; j++)
362     {
363     log_common("Debug: <--[%u]\n", (buf[j] + 256) % 256);
364     }
365     #endif
366 sysadm 1.14 }
367    
368 sysadm 1.48 fcntl(STDIN_FILENO, F_SETFL, flags);
369    
370     if (close(epollfd) < 0)
371 sysadm 1.45 {
372 sysadm 1.48 log_error("close(epoll) error (%d)\n");
373 sysadm 1.45 }
374 sysadm 1.11 }
375 sysadm 1.14
376     while (pos < len)
377 sysadm 1.11 {
378 sysadm 1.18 unsigned char c = buf[pos++];
379 sysadm 1.5
380 sysadm 1.14 if (c == KEY_CONTROL)
381     {
382     if (in_control == 0)
383     {
384     in_control = 1;
385     i = 0;
386     continue;
387     }
388     }
389 sysadm 1.1
390 sysadm 1.14 if (in_control)
391     {
392     tmp[i++] = c;
393     if (i >= 2)
394     {
395     out = (int)tmp[0] * 256 + tmp[1];
396     in_control = 0;
397     break;
398     }
399     continue;
400     }
401 sysadm 1.6
402 sysadm 1.37 if (c == KEY_ESC)
403 sysadm 1.14 {
404     if (in_esc == 0)
405     {
406     in_esc = 1;
407     in_ascii = 1;
408     i = 0;
409     continue;
410     }
411     else
412     {
413 sysadm 1.37 out = KEY_CSI;
414 sysadm 1.14 in_esc = 0;
415     break;
416     }
417     }
418 sysadm 1.3
419 sysadm 1.14 in_esc = 0;
420 sysadm 1.1
421 sysadm 1.14 if (in_ascii)
422     {
423     tmp[i++] = c;
424 sysadm 1.33 if (i == 2 && (tmp[0] == 79 || tmp[0] == 91))
425 sysadm 1.14 {
426     in_ascii = 0;
427 sysadm 1.33 switch (tmp[1])
428 sysadm 1.14 {
429 sysadm 1.33 case 65:
430 sysadm 1.14 out = KEY_UP;
431     break;
432 sysadm 1.33 case 66:
433 sysadm 1.14 out = KEY_DOWN;
434     break;
435 sysadm 1.33 case 67:
436 sysadm 1.14 out = KEY_RIGHT;
437     break;
438 sysadm 1.33 case 68:
439 sysadm 1.14 out = KEY_LEFT;
440     break;
441 sysadm 1.33 default:
442     in_ascii = 1;
443     }
444     if (!in_ascii)
445     {
446     break;
447     }
448     }
449     if (i == 2 && tmp[0] == 91) // Fterm
450     {
451     in_ascii = 0;
452     switch (tmp[1])
453     {
454     case 86:
455     out = KEY_SHIFT_F1;
456     break;
457     case 90:
458     out = KEY_SHIFT_F2;
459     break;
460     case 97:
461     out = KEY_SHIFT_F3;
462     break;
463     case 98:
464     out = KEY_SHIFT_F4;
465     break;
466     case 99:
467     out = KEY_SHIFT_F5;
468     break;
469     case 100:
470     out = KEY_SHIFT_F6;
471     break;
472     case 101:
473     out = KEY_SHIFT_F7;
474     break;
475     case 102:
476     out = KEY_SHIFT_F8;
477     break;
478     case 103:
479     out = KEY_SHIFT_F9;
480     break;
481     case 104:
482     out = KEY_SHIFT_F10;
483     break;
484     case 107:
485     out = KEY_CTRL_F1;
486     break;
487     case 108:
488     out = KEY_CTRL_F2;
489     break;
490     case 109:
491     out = KEY_CTRL_F3;
492     break;
493     case 112:
494     out = KEY_CTRL_F6;
495     break;
496     case 113:
497     out = KEY_CTRL_F7;
498     break;
499     case 114:
500     out = KEY_CTRL_F8;
501     break;
502     case 115:
503     out = KEY_CTRL_F9;
504     break;
505     case 116:
506     out = KEY_CTRL_F10;
507     break;
508     default:
509     in_ascii = 1;
510     }
511     if (!in_ascii)
512     {
513     break;
514     }
515     }
516     if (i == 2 && tmp[0] == 79) // Xterm
517     {
518     in_ascii = 0;
519     switch (tmp[1])
520     {
521     case 80:
522     out = KEY_F1;
523     break;
524     case 81:
525     out = KEY_F2;
526     break;
527     case 82:
528     out = KEY_F3;
529     break;
530     case 83:
531     out = KEY_F4;
532     break;
533     default:
534     in_ascii = 1;
535     }
536     if (!in_ascii)
537     {
538     break;
539 sysadm 1.14 }
540     }
541     if (i == 3 && tmp[0] == 91 && tmp[2] == 126)
542     {
543     in_ascii = 0;
544     switch (tmp[1])
545     {
546     case 49:
547     out = KEY_HOME;
548     break;
549 sysadm 1.42 case 50:
550     out = KEY_INS;
551     break;
552 sysadm 1.14 case 51:
553     out = KEY_DEL;
554     break;
555     case 52:
556     out = KEY_END;
557     break;
558     case 53:
559     out = KEY_PGUP;
560     break;
561     case 54:
562     out = KEY_PGDN;
563     break;
564 sysadm 1.33 default:
565     in_ascii = 1;
566     }
567     if (!in_ascii)
568     {
569     break;
570     }
571     }
572 sysadm 1.39 if (i == 4 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 126) // Fterm
573 sysadm 1.33 {
574     in_ascii = 0;
575     switch (tmp[2])
576     {
577     case 49:
578     out = KEY_F1;
579     break;
580     case 50:
581     out = KEY_F2;
582     break;
583     case 51:
584     out = KEY_F3;
585     break;
586     case 52:
587     out = KEY_F4;
588     break;
589     case 53:
590     out = KEY_F5;
591     break;
592     case 55:
593     out = KEY_F6;
594     break;
595     case 56:
596     out = KEY_F7;
597     break;
598     case 57:
599     out = KEY_F8;
600     break;
601     default:
602     in_ascii = 1;
603     }
604     if (!in_ascii)
605     {
606     break;
607     }
608     }
609     if (i == 4 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 126) // Fterm
610     {
611     in_ascii = 0;
612     switch (tmp[2])
613     {
614     case 48:
615     out = KEY_F9;
616     break;
617     case 49:
618     out = KEY_F10;
619     break;
620     case 50:
621     out = KEY_F11; // Fterm
622     break;
623     case 51:
624     out = KEY_F11; // Xterm
625     break;
626     case 52:
627     out = KEY_F12; // Xterm
628     break;
629     default:
630     in_ascii = 1;
631     }
632     if (!in_ascii)
633     {
634     break;
635     }
636     }
637     if (i == 5 && tmp[0] == 91 && tmp[1] == 49 && tmp[2] == 59 && tmp[3] == 53) // Xterm
638     {
639     in_ascii = 0;
640     switch (tmp[4])
641     {
642 sysadm 1.41 case 65:
643     out = KEY_CTRL_UP;
644     break;
645     case 66:
646     out = KEY_CTRL_DOWN;
647     break;
648     case 67:
649     out = KEY_CTRL_RIGHT;
650     break;
651     case 68:
652     out = KEY_CTRL_LEFT;
653     break;
654     case 70:
655     out = KEY_CTRL_END;
656     break;
657     case 72:
658     out = KEY_CTRL_HOME;
659     break;
660 sysadm 1.33 case 80:
661     out = KEY_CTRL_F1;
662     break;
663     case 81:
664     out = KEY_CTRL_F2;
665     break;
666     case 82:
667     out = KEY_CTRL_F3;
668     break;
669     default:
670     in_ascii = 1;
671     }
672     if (!in_ascii)
673     {
674     break;
675     }
676     }
677     if (i == 6 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 59 && tmp[4] == 53 && tmp[5] == 126) // Xterm
678     {
679     in_ascii = 0;
680     switch (tmp[2])
681     {
682     case 53:
683     out = KEY_CTRL_F5;
684     break;
685     case 55:
686     out = KEY_CTRL_F6;
687     break;
688     case 56:
689     out = KEY_CTRL_F7;
690     break;
691     case 57:
692     out = KEY_CTRL_F8;
693     break;
694     default:
695     in_ascii = 1;
696     }
697     if (!in_ascii)
698     {
699     break;
700     }
701     }
702     if (i == 6 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 59 && tmp[4] == 53 && tmp[5] == 126) // Xterm
703     {
704     in_ascii = 0;
705     switch (tmp[2])
706     {
707     case 48:
708     out = KEY_CTRL_F9;
709     break;
710     case 49:
711     out = KEY_CTRL_F10;
712     break;
713     case 51:
714     out = KEY_CTRL_F11;
715     break;
716     case 52:
717     out = KEY_CTRL_F12;
718     break;
719     default:
720     in_ascii = 1;
721     }
722     if (!in_ascii)
723     {
724     break;
725     }
726     }
727     if (i == 5 && tmp[0] == 91 && tmp[1] == 49 && tmp[2] == 59 && tmp[3] == 50) // Xterm
728     {
729     in_ascii = 0;
730     switch (tmp[4])
731     {
732     case 80:
733     out = KEY_SHIFT_F1;
734     break;
735     case 81:
736     out = KEY_SHIFT_F2;
737     break;
738     case 82:
739     out = KEY_SHIFT_F3;
740     break;
741     case 83:
742     out = KEY_SHIFT_F4;
743     break;
744     default:
745     in_ascii = 1;
746     }
747     if (!in_ascii)
748     {
749     break;
750 sysadm 1.14 }
751 sysadm 1.33 }
752     if (i == 6 && tmp[0] == 91 && tmp[1] == 49 && tmp[3] == 59 && tmp[4] == 50 && tmp[5] == 126) // Xterm
753     {
754     in_ascii = 0;
755     switch (tmp[2])
756     {
757     case 53:
758     out = KEY_SHIFT_F5;
759     break;
760     case 55:
761     out = KEY_SHIFT_F6;
762     break;
763     case 56:
764     out = KEY_SHIFT_F7;
765     break;
766     case 57:
767     out = KEY_SHIFT_F8;
768     break;
769     default:
770     in_ascii = 1;
771     }
772     if (!in_ascii)
773     {
774     break;
775     }
776     }
777     if (i == 6 && tmp[0] == 91 && tmp[1] == 50 && tmp[3] == 59 && tmp[4] == 50 && tmp[5] == 126) // Xterm
778     {
779     in_ascii = 0;
780     switch (tmp[2])
781     {
782     case 48:
783     out = KEY_SHIFT_F9;
784     break;
785     case 49:
786     out = KEY_SHIFT_F10;
787     break;
788     case 51:
789     out = KEY_SHIFT_F11;
790     break;
791     case 52:
792     out = KEY_SHIFT_F12;
793     break;
794     default:
795     in_ascii = 1;
796     }
797     if (!in_ascii)
798     {
799     break;
800     }
801     }
802    
803     if (c == 'm')
804     {
805     in_ascii = 0;
806 sysadm 1.14 }
807     continue;
808     }
809 sysadm 1.1
810 sysadm 1.14 out = ((int)c + 256) % 256;
811     break;
812 sysadm 1.1 }
813    
814 sysadm 1.36 // For ESC key
815     if (out == 0 && in_esc)
816     {
817     out = KEY_ESC;
818     }
819    
820 sysadm 1.33 // for debug
821 sysadm 1.45 #ifdef _DEBUG
822     if (out != KEY_TIMEOUT && out != KEY_NULL)
823     {
824     log_common("Debug: -->[0x %x]\n", out);
825     }
826     #endif
827 sysadm 1.33
828 sysadm 1.14 return out;
829 sysadm 1.1 }
830 sysadm 1.5
831 sysadm 1.31 int igetch_t(int sec)
832 sysadm 1.9 {
833 sysadm 1.14 int ch;
834 sysadm 1.44 time_t t_begin = time(NULL);
835 sysadm 1.10
836 sysadm 1.14 do
837     {
838 sysadm 1.31 ch = igetch(100);
839 sysadm 1.44 } while (!SYS_server_exit && ch == KEY_TIMEOUT && (time(NULL) - t_begin < sec));
840 sysadm 1.9
841 sysadm 1.14 return ch;
842 sysadm 1.9 }
843 sysadm 1.31
844     void igetch_reset()
845     {
846     int ch;
847     do
848     {
849     ch = igetch(0);
850     } while (ch != KEY_NULL && ch != KEY_TIMEOUT);
851     }
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