/[LeafOK_CVS]/lbbs/src/screen.c
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Annotation of /lbbs/src/screen.c

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Revision 1.130 - (hide annotations)
Wed Nov 19 03:12:58 2025 UTC (3 months, 3 weeks ago) by sysadm
Branch: MAIN
Changes since 1.129: +1 -1 lines
Content type: text/x-csrc 
Use POSIX shared object instead of SysV shared segment in file_loader
1 sysadm 1.121 /* SPDX-License-Identifier: GPL-3.0-or-later */
2     /*
3     * screen
4     * - advanced telnet-based user interactive input / output features
5     *
6 sysadm 1.122 * Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
7 sysadm 1.121 */
8 sysadm 1.1
9 sysadm 1.129 #ifdef HAVE_CONFIG_H
10     #include "config.h"
11     #endif
12    
13 sysadm 1.9 #include "bbs.h"
14 sysadm 1.6 #include "common.h"
15 sysadm 1.89 #include "editor.h"
16 sysadm 1.54 #include "file_loader.h"
17 sysadm 1.102 #include "io.h"
18     #include "log.h"
19 sysadm 1.101 #include "login.h"
20 sysadm 1.102 #include "screen.h"
21     #include "str_process.h"
22     #include <ctype.h>
23     #include <errno.h>
24 sysadm 1.52 #include <fcntl.h>
25 sysadm 1.98 #include <string.h>
26 sysadm 1.102 #include <stdlib.h>
27 sysadm 1.41 #include <unistd.h>
28 sysadm 1.127 #include <wchar.h>
29 sysadm 1.102 #include <sys/param.h>
30 sysadm 1.6 #include <sys/stat.h>
31 sysadm 1.55 #include <sys/shm.h>
32 sysadm 1.102 #include <sys/types.h>
33 sysadm 1.1
34 sysadm 1.124 const char CTRL_SEQ_CLR_LINE[] = "\033[K";
35 sysadm 1.9
36 sysadm 1.124 static const int ACTIVE_BOARD_HEIGHT = 8;
37    
38     static const int STR_TOP_LEFT_MAX_LEN = 80;
39     static const int STR_TOP_MIDDLE_MAX_LEN = 40;
40     static const int STR_TOP_RIGHT_MAX_LEN = 80;
41 sysadm 1.70
42 sysadm 1.119 static size_t get_time_str(char *s, size_t len)
43 sysadm 1.107 {
44     time_t curtime;
45     struct tm local_tm;
46    
47     time(&curtime);
48     localtime_r(&curtime, &local_tm);
49 sysadm 1.119 size_t j = strftime(s, len, "%m/%d %H:%M %Z", &local_tm);
50 sysadm 1.107
51 sysadm 1.119 return j;
52 sysadm 1.107 }
53    
54 sysadm 1.21 void moveto(int row, int col)
55 sysadm 1.1 {
56 sysadm 1.21 if (row >= 0)
57     {
58     prints("\033[%d;%dH", row, col);
59     }
60     else
61     {
62     prints("\r");
63     }
64 sysadm 1.1 }
65    
66 sysadm 1.21 void clrtoeol()
67 sysadm 1.1 {
68 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
69 sysadm 1.2 }
70    
71 sysadm 1.21 void clrline(int line_begin, int line_end)
72 sysadm 1.5 {
73 sysadm 1.21 int i;
74 sysadm 1.6
75 sysadm 1.21 for (i = line_begin; i <= line_end; i++)
76     {
77     moveto(i, 0);
78 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
79 sysadm 1.21 }
80 sysadm 1.5 }
81    
82 sysadm 1.21 void clrtobot(int line_begin)
83 sysadm 1.16 {
84 sysadm 1.21 moveto(line_begin, 0);
85 sysadm 1.25 prints("\033[J");
86     moveto(line_begin, 0);
87 sysadm 1.16 }
88    
89 sysadm 1.21 void clearscr()
90 sysadm 1.2 {
91 sysadm 1.23 prints("\033[2J");
92 sysadm 1.21 moveto(0, 0);
93 sysadm 1.6 }
94    
95 sysadm 1.113 inline int press_any_key()
96     {
97 sysadm 1.114 return press_any_key_ex(" \033[1;33m按任意键继续...\033[m", 60);
98 sysadm 1.113 }
99    
100 sysadm 1.114 int press_any_key_ex(const char *msg, int sec)
101 sysadm 1.6 {
102 sysadm 1.112 int ch = 0;
103     int duration = 0;
104     time_t t_begin = time(NULL);
105    
106 sysadm 1.53 moveto(SCREEN_ROWS, 0);
107 sysadm 1.21 clrtoeol();
108 sysadm 1.6
109 sysadm 1.113 prints(msg);
110 sysadm 1.21 iflush();
111 sysadm 1.6
112 sysadm 1.114 igetch_reset();
113    
114 sysadm 1.112 do
115     {
116 sysadm 1.114 ch = igetch_t(sec - duration);
117 sysadm 1.112 duration = (int)(time(NULL) - t_begin);
118     } while (!SYS_server_exit && ch == 0 && duration < 60);
119    
120     return ch;
121 sysadm 1.1 }
122    
123 sysadm 1.21 void set_input_echo(int echo)
124 sysadm 1.7 {
125 sysadm 1.21 if (echo)
126     {
127     outc('\x83'); // ASCII code 131
128     }
129     else
130     {
131 sysadm 1.111 // outc ('\x85'); // ASCII code 133
132 sysadm 1.21 prints("\xff\xfb\x01\xff\xfb\x03");
133     }
134 sysadm 1.111 iflush();
135 sysadm 1.7 }
136    
137 sysadm 1.124 static int _str_input(char *buffer, int buf_size, int max_display_len, enum io_echo_t echo_mode)
138 sysadm 1.1 {
139 sysadm 1.104 int ch;
140 sysadm 1.38 int offset = 0;
141 sysadm 1.104 int eol;
142     int display_len;
143 sysadm 1.127 char input_str[5];
144 sysadm 1.104 int str_len = 0;
145 sysadm 1.127 wchar_t wcs[2];
146 sysadm 1.104 char c;
147 sysadm 1.1
148 sysadm 1.38 buffer[buf_size - 1] = '\0';
149 sysadm 1.104 offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
150 sysadm 1.21
151 sysadm 1.47 igetch_reset();
152    
153 sysadm 1.48 while (!SYS_server_exit)
154 sysadm 1.1 {
155 sysadm 1.123 ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
156 sysadm 1.48
157 sysadm 1.104 if (ch == CR)
158 sysadm 1.22 {
159 sysadm 1.21 break;
160 sysadm 1.22 }
161 sysadm 1.104 else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
162 sysadm 1.41 {
163     return -1;
164     }
165 sysadm 1.104 else if (ch == LF || ch == '\0')
166 sysadm 1.22 {
167 sysadm 1.21 continue;
168 sysadm 1.22 }
169 sysadm 1.104 else if (ch == BACKSPACE)
170 sysadm 1.21 {
171     if (offset > 0)
172     {
173 sysadm 1.31 offset--;
174 sysadm 1.104 if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
175 sysadm 1.31 {
176 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
177 sysadm 1.31 {
178 sysadm 1.104 offset--;
179 sysadm 1.31 }
180 sysadm 1.104 display_len--;
181     prints("\033[D \033[D");
182 sysadm 1.31 }
183     buffer[offset] = '\0';
184 sysadm 1.104 display_len--;
185 sysadm 1.31 prints("\033[D \033[D");
186 sysadm 1.21 iflush();
187     }
188     continue;
189     }
190 sysadm 1.104 else if (ch > 255 || iscntrl(ch))
191 sysadm 1.21 {
192     continue;
193     }
194 sysadm 1.104 else if ((ch & 0xff80) == 0x80) // head of multi-byte character
195 sysadm 1.21 {
196 sysadm 1.104 str_len = 0;
197 sysadm 1.115 c = (char)(ch & 0xf0);
198     while (c & 0x80)
199 sysadm 1.104 {
200     input_str[str_len] = (char)(ch - 256);
201     str_len++;
202 sysadm 1.115 c = (c & 0x7f) << 1;
203 sysadm 1.104
204 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
205 sysadm 1.104 {
206     break;
207     }
208    
209     // Expect additional bytes of input
210     ch = igetch(100); // 0.1 second
211     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
212     {
213 sysadm 1.106 #ifdef _DEBUG
214 sysadm 1.104 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
215 sysadm 1.106 #endif
216 sysadm 1.104 str_len = 0;
217     break;
218     }
219     }
220 sysadm 1.127 input_str[str_len] = '\0';
221 sysadm 1.104
222     if (str_len == 0) // Incomplete input
223     {
224     continue;
225     }
226    
227 sysadm 1.127 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
228     {
229     log_error("mbstowcs() error\n");
230     }
231     if (offset + str_len > buf_size - 1 || display_len + (UTF8_fixed_width ? 2 : wcwidth(wcs[0])) > max_display_len) // No enough space for Chinese character
232 sysadm 1.31 {
233     outc('\a');
234     iflush();
235     continue;
236     }
237 sysadm 1.104
238     memcpy(buffer + offset, input_str, (size_t)str_len);
239     offset += str_len;
240     buffer[offset] = '\0';
241     display_len += 2;
242    
243     switch (echo_mode)
244     {
245     case DOECHO:
246     prints(input_str);
247     break;
248     case NOECHO:
249     prints("**");
250     break;
251     }
252 sysadm 1.21 }
253 sysadm 1.104 else if (ch >= 32 && ch < 127) // Printable character
254 sysadm 1.21 {
255 sysadm 1.104 if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
256     {
257     outc('\a');
258     iflush();
259     continue;
260     }
261 sysadm 1.43
262 sysadm 1.104 buffer[offset++] = (char)ch;
263     buffer[offset] = '\0';
264     display_len++;
265 sysadm 1.43
266 sysadm 1.104 switch (echo_mode)
267     {
268     case DOECHO:
269     outc((char)ch);
270     break;
271     case NOECHO:
272     outc('*');
273     break;
274     }
275 sysadm 1.21 }
276 sysadm 1.104 else // Invalid character
277 sysadm 1.21 {
278 sysadm 1.104 continue;
279 sysadm 1.21 }
280 sysadm 1.104
281     iflush();
282 sysadm 1.6 }
283 sysadm 1.1
284 sysadm 1.21 return offset;
285 sysadm 1.1 }
286    
287 sysadm 1.124 int str_input(char *buffer, int buf_size, enum io_echo_t echo_mode)
288 sysadm 1.18 {
289 sysadm 1.32 int len;
290    
291     buffer[0] = '\0';
292 sysadm 1.21
293 sysadm 1.104 len = _str_input(buffer, buf_size, buf_size, echo_mode);
294 sysadm 1.21
295 sysadm 1.32 prints("\r\n");
296     iflush();
297 sysadm 1.21
298 sysadm 1.32 return len;
299 sysadm 1.115 }
300 sysadm 1.18
301 sysadm 1.108 int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
302 sysadm 1.15 {
303 sysadm 1.108 int len = 0;
304     int col_cur = 0;
305     int ch;
306     int offset = 0;
307     int eol;
308     int display_len;
309 sysadm 1.127 char input_str[5];
310 sysadm 1.128 int str_len = 0;
311 sysadm 1.127 wchar_t wcs[2];
312 sysadm 1.128 int wc_len;
313 sysadm 1.108 char c;
314    
315     buffer[buf_size - 1] = '\0';
316     offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
317     buffer[offset] = '\0';
318     len = offset;
319     col_cur = col + str_length(prompt, 1) + display_len;
320 sysadm 1.15
321 sysadm 1.21 moveto(row, col);
322 sysadm 1.80 prints("%s", prompt);
323     prints("%s", buffer);
324 sysadm 1.108 prints("%*s", max_display_len - display_len, "");
325     moveto(row, col_cur);
326 sysadm 1.21 iflush();
327 sysadm 1.15
328 sysadm 1.108 igetch_reset();
329    
330     while (!SYS_server_exit)
331     {
332 sysadm 1.123 ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
333 sysadm 1.108
334     if (ch == CR)
335     {
336     break;
337     }
338     else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
339     {
340     return -1;
341     }
342     else if (ch == LF || ch == '\0')
343     {
344     continue;
345     }
346     else if (ch == BACKSPACE)
347     {
348     if (offset > 0)
349     {
350     str_len = 1;
351     offset--;
352     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
353     {
354 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
355 sysadm 1.108 {
356     str_len++;
357     offset--;
358     }
359 sysadm 1.128
360     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
361     {
362     log_error("mbstowcs() error\n");
363     }
364     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
365    
366     if (wc_len == 2)
367     {
368     display_len--;
369     col_cur--;
370     }
371 sysadm 1.108 }
372    
373     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
374     len -= str_len;
375     buffer[len] = '\0';
376     display_len--;
377     col_cur--;
378    
379     moveto(row, col_cur);
380     prints("%s", buffer + offset);
381     prints("%*s", max_display_len - display_len, "");
382     moveto(row, col_cur);
383     iflush();
384     }
385     continue;
386     }
387     else if (ch == KEY_DEL)
388     {
389     if (offset < len)
390     {
391     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
392     {
393     str_len = 0;
394 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
395     while (c & 0x80)
396 sysadm 1.108 {
397     str_len++;
398 sysadm 1.115 c = (c & 0x7f) << 1;
399 sysadm 1.108 }
400     display_len--;
401     }
402     else
403     {
404     str_len = 1;
405     }
406    
407     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
408     len -= str_len;
409     buffer[len] = '\0';
410     display_len--;
411    
412     moveto(row, col_cur);
413     prints("%s", buffer + offset);
414     prints("%*s", max_display_len - display_len, "");
415     moveto(row, col_cur);
416     iflush();
417     }
418     continue;
419     }
420     else if (ch == KEY_LEFT)
421     {
422     if (offset > 0)
423     {
424     str_len = 1;
425     offset--;
426     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
427     {
428 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
429 sysadm 1.108 {
430     str_len++;
431     offset--;
432     }
433 sysadm 1.128
434     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
435     {
436     log_error("mbstowcs() error\n");
437     }
438     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
439    
440     if (wc_len == 2)
441     {
442     col_cur--;
443     }
444 sysadm 1.108 }
445     col_cur--;
446    
447     moveto(row, col_cur);
448     iflush();
449     }
450     continue;
451     }
452     else if (ch == KEY_RIGHT)
453     {
454     if (offset < len)
455     {
456     str_len = 0;
457     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
458     {
459 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
460     while (c & 0x80)
461 sysadm 1.108 {
462     str_len++;
463 sysadm 1.115 c = (c & 0x7f) << 1;
464 sysadm 1.108 }
465 sysadm 1.128
466     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
467     {
468     log_error("mbstowcs() error\n");
469     }
470     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
471    
472     if (wc_len == 2)
473     {
474     col_cur++;
475     }
476 sysadm 1.108 }
477     else
478     {
479     str_len = 1;
480     }
481    
482     col_cur++;
483     offset += str_len;
484    
485     moveto(row, col_cur);
486     iflush();
487     }
488     continue;
489     }
490     else if (ch == KEY_HOME || ch == KEY_UP)
491     {
492     if (offset > 0)
493     {
494     offset = 0;
495     col_cur = col + str_length(prompt, 1);
496    
497     moveto(row, col_cur);
498     iflush();
499     }
500     continue;
501     }
502     else if (ch == KEY_END || ch == KEY_DOWN)
503     {
504     if (offset < len)
505     {
506     offset = len;
507     col_cur = col + str_length(prompt, 1) + display_len;
508    
509     moveto(row, col_cur);
510     iflush();
511     }
512     continue;
513     }
514     else if (ch > 255 || iscntrl(ch))
515     {
516     continue;
517     }
518     else if ((ch & 0xff80) == 0x80) // head of multi-byte character
519     {
520     str_len = 0;
521 sysadm 1.115 c = (char)(ch & 0xf0);
522     while (c & 0x80)
523 sysadm 1.108 {
524     input_str[str_len] = (char)(ch - 256);
525     str_len++;
526 sysadm 1.115 c = (c & 0x7f) << 1;
527 sysadm 1.108
528 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
529 sysadm 1.108 {
530     break;
531     }
532    
533     // Expect additional bytes of input
534     ch = igetch(100); // 0.1 second
535     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
536     {
537     #ifdef _DEBUG
538     log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
539     #endif
540     str_len = 0;
541     break;
542     }
543     }
544 sysadm 1.127 input_str[str_len] = '\0';
545 sysadm 1.108
546     if (str_len == 0) // Incomplete input
547     {
548     continue;
549     }
550    
551 sysadm 1.127 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
552     {
553     log_error("mbstowcs() error\n");
554     }
555 sysadm 1.128 wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
556    
557     if (len + str_len > buf_size - 1 ||
558     display_len + wc_len > max_display_len) // No enough space for Chinese character
559 sysadm 1.108 {
560     outc('\a');
561     iflush();
562     continue;
563     }
564    
565     memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
566     memcpy(buffer + offset, input_str, (size_t)str_len);
567     len += str_len;
568     buffer[len] = '\0';
569 sysadm 1.128 display_len += wc_len;
570 sysadm 1.108
571     moveto(row, col_cur);
572     prints("%s", buffer + offset);
573     prints("%*s", max_display_len - display_len, "");
574    
575 sysadm 1.128 col_cur += wc_len;
576 sysadm 1.108
577     moveto(row, col_cur);
578     iflush();
579    
580     offset += str_len;
581     }
582     else if (ch >= 32 && ch < 127) // Printable character
583     {
584     if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
585     {
586     outc('\a');
587     iflush();
588     continue;
589     }
590    
591     memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
592     buffer[offset] = (char)ch;
593     len++;
594     buffer[len] = '\0';
595     display_len++;
596    
597     moveto(row, col_cur);
598     prints("%s", buffer + offset);
599     prints("%*s", max_display_len - display_len, "");
600    
601     col_cur++;
602    
603     moveto(row, col_cur);
604     iflush();
605    
606     offset++;
607     }
608     else // Invalid character
609     {
610     continue;
611     }
612     }
613 sysadm 1.21
614     return len;
615 sysadm 1.15 }
616    
617 sysadm 1.89 int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
618 sysadm 1.81 display_data_key_handler key_handler, const char *help_filename)
619 sysadm 1.1 {
620 sysadm 1.37 static int show_help = 1;
621 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
622 sysadm 1.85 DISPLAY_CTX ctx;
623 sysadm 1.81 int ch = 0;
624 sysadm 1.91 int input_ok;
625     const int screen_begin_row = 1;
626 sysadm 1.95 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
627     int output_current_row = screen_begin_row;
628     int output_end_row = SCREEN_ROWS - 1;
629 sysadm 1.54 long int line_current = 0;
630 sysadm 1.34 long int len;
631     long int percentile;
632 sysadm 1.54 int loop;
633 sysadm 1.78 int eol, display_len;
634 sysadm 1.52
635 sysadm 1.95 clrline(output_current_row, SCREEN_ROWS);
636 sysadm 1.6
637 sysadm 1.81 // update msg_ext with extended key handler
638 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
639 sysadm 1.81 {
640     return ch;
641     }
642    
643 sysadm 1.54 loop = 1;
644 sysadm 1.44 while (!SYS_server_exit && loop)
645 sysadm 1.6 {
646 sysadm 1.126 if (eof_exit > 0 && line_current >= display_line_total)
647 sysadm 1.27 {
648 sysadm 1.82 if (eof_exit == 1)
649 sysadm 1.27 {
650     ch = press_any_key();
651     }
652 sysadm 1.82 else // if (eof_exit == 2)
653 sysadm 1.27 {
654     iflush();
655     }
656    
657     loop = 0;
658     break;
659     }
660    
661 sysadm 1.95 if (line_current >= display_line_total || output_current_row > output_end_row)
662 sysadm 1.21 {
663 sysadm 1.95 ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
664 sysadm 1.85
665 sysadm 1.95 if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
666 sysadm 1.27 {
667 sysadm 1.95 percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
668 sysadm 1.85 ctx.reach_end = 0;
669 sysadm 1.27 }
670     else
671     {
672     percentile = 100;
673 sysadm 1.85 ctx.reach_end = 1;
674 sysadm 1.27 }
675 sysadm 1.6
676 sysadm 1.95 ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
677     ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
678 sysadm 1.85
679 sysadm 1.78 snprintf(buffer, sizeof(buffer),
680 sysadm 1.104 "\033[1;44;33m第\033[32m%ld\033[33m-\033[32m%ld\033[33m行 (\033[32m%ld%%\033[33m) %s",
681 sysadm 1.85 ctx.line_top,
682     ctx.line_bottom,
683     percentile,
684     ctx.msg);
685 sysadm 1.78
686 sysadm 1.97 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
687 sysadm 1.81 for (; display_len < SCREEN_COLS; display_len++)
688 sysadm 1.78 {
689     buffer[len++] = ' ';
690     }
691     buffer[len] = '\0';
692     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
693    
694 sysadm 1.53 moveto(SCREEN_ROWS, 0);
695 sysadm 1.80 prints("%s", buffer);
696 sysadm 1.26 iflush();
697 sysadm 1.6
698 sysadm 1.26 input_ok = 0;
699 sysadm 1.44 while (!SYS_server_exit && !input_ok)
700 sysadm 1.21 {
701 sysadm 1.123 ch = igetch_t(BBS_max_user_idle_time);
702 sysadm 1.94 input_ok = 1;
703    
704 sysadm 1.110 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
705     {
706     BBS_last_access_tm = time(NULL);
707     }
708    
709 sysadm 1.81 // extended key handler
710 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
711 sysadm 1.81 {
712     goto cleanup;
713     }
714    
715 sysadm 1.26 switch (ch)
716 sysadm 1.21 {
717 sysadm 1.67 case KEY_NULL:
718 sysadm 1.110 log_error("KEY_NULL\n");
719     goto cleanup;
720 sysadm 1.41 case KEY_TIMEOUT:
721 sysadm 1.110 log_error("User input timeout\n");
722 sysadm 1.41 goto cleanup;
723 sysadm 1.50 case KEY_HOME:
724 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
725 sysadm 1.84 {
726     break;
727     }
728 sysadm 1.54 line_current = 0;
729 sysadm 1.95 output_current_row = screen_begin_row;
730     output_end_row = SCREEN_ROWS - 1;
731     clrline(output_current_row, SCREEN_ROWS);
732 sysadm 1.50 break;
733     case KEY_END:
734 sysadm 1.91 if (display_line_total < screen_row_total)
735 sysadm 1.83 {
736 sysadm 1.84 break;
737 sysadm 1.83 }
738 sysadm 1.91 line_current = display_line_total - screen_row_total;
739 sysadm 1.95 output_current_row = screen_begin_row;
740     output_end_row = SCREEN_ROWS - 1;
741     clrline(output_current_row, SCREEN_ROWS);
742 sysadm 1.50 break;
743 sysadm 1.26 case KEY_UP:
744 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
745 sysadm 1.21 {
746     break;
747 sysadm 1.26 }
748 sysadm 1.95 line_current -= output_current_row;
749     output_current_row = screen_begin_row;
750 sysadm 1.89 // screen_end_line = screen_begin_line;
751 sysadm 1.39 // prints("\033[T"); // Scroll down 1 line
752 sysadm 1.95 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
753 sysadm 1.26 break;
754 sysadm 1.49 case CR:
755 sysadm 1.26 case KEY_DOWN:
756 sysadm 1.95 if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
757 sysadm 1.26 {
758 sysadm 1.21 break;
759 sysadm 1.26 }
760 sysadm 1.95 line_current += (screen_row_total - (output_current_row - screen_begin_row));
761     output_current_row = screen_row_total;
762     output_end_row = SCREEN_ROWS - 1;
763 sysadm 1.53 moveto(SCREEN_ROWS, 0);
764 sysadm 1.26 clrtoeol();
765 sysadm 1.104 // prints("\033[S"); // Scroll up 1 line
766 sysadm 1.103 prints("\n"); // Legacy Cterm only works with this line
767 sysadm 1.26 break;
768     case KEY_PGUP:
769 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
770 sysadm 1.26 {
771 sysadm 1.21 break;
772 sysadm 1.26 }
773 sysadm 1.95 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
774 sysadm 1.54 if (line_current < 0)
775 sysadm 1.26 {
776 sysadm 1.54 line_current = 0;
777 sysadm 1.26 }
778 sysadm 1.95 output_current_row = screen_begin_row;
779     output_end_row = SCREEN_ROWS - 1;
780     clrline(output_current_row, SCREEN_ROWS);
781 sysadm 1.26 break;
782 sysadm 1.116 case KEY_SPACE:
783 sysadm 1.26 case KEY_PGDN:
784 sysadm 1.95 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
785 sysadm 1.26 {
786 sysadm 1.21 break;
787     }
788 sysadm 1.95 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
789 sysadm 1.91 if (line_current + screen_row_total > display_line_total) // No enough lines to display
790 sysadm 1.26 {
791 sysadm 1.91 line_current = display_line_total - screen_row_total;
792 sysadm 1.26 }
793 sysadm 1.95 output_current_row = screen_begin_row;
794     output_end_row = SCREEN_ROWS - 1;
795     clrline(output_current_row, SCREEN_ROWS);
796 sysadm 1.26 break;
797 sysadm 1.74 case KEY_ESC:
798 sysadm 1.26 case KEY_LEFT:
799 sysadm 1.27 loop = 0;
800 sysadm 1.26 break;
801     case 'h':
802 sysadm 1.81 if (!show_help) // Not reentrant
803 sysadm 1.37 {
804     break;
805     }
806 sysadm 1.26 // Display help information
807 sysadm 1.37 show_help = 0;
808 sysadm 1.89 display_file(help_filename, 1);
809 sysadm 1.37 show_help = 1;
810 sysadm 1.81 case KEY_F5:
811 sysadm 1.26 // Refresh after display help information
812 sysadm 1.95 line_current -= (output_current_row - screen_begin_row);
813     output_current_row = screen_begin_row;
814     output_end_row = SCREEN_ROWS - 1;
815     clrline(output_current_row, SCREEN_ROWS);
816 sysadm 1.89 break;
817 sysadm 1.81 case 0: // Refresh bottom line
818     break;
819 sysadm 1.26 default:
820     input_ok = 0;
821     break;
822 sysadm 1.21 }
823 sysadm 1.6 }
824 sysadm 1.21
825 sysadm 1.26 continue;
826     }
827 sysadm 1.21
828 sysadm 1.55 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
829 sysadm 1.89 if (len >= sizeof(buffer))
830 sysadm 1.26 {
831 sysadm 1.87 log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
832 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
833 sysadm 1.89 len = sizeof(buffer) - 1;
834 sysadm 1.26 }
835 sysadm 1.87 else if (len < 0)
836     {
837     log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
838     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
839     len = 0;
840     }
841 sysadm 1.52
842 sysadm 1.55 memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
843 sysadm 1.52 buffer[len] = '\0';
844    
845 sysadm 1.95 moveto(output_current_row, 0);
846 sysadm 1.26 clrtoeol();
847     prints("%s", buffer);
848 sysadm 1.54 line_current++;
849 sysadm 1.95 output_current_row++;
850 sysadm 1.26 }
851 sysadm 1.6
852 sysadm 1.41 cleanup:
853 sysadm 1.78 return ch;
854     }
855    
856 sysadm 1.126 int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
857 sysadm 1.81 {
858 sysadm 1.85 switch (*p_key)
859 sysadm 1.81 {
860     case 0: // Set msg
861 sysadm 1.85 snprintf(p_ctx->msg, sizeof(p_ctx->msg),
862 sysadm 1.104 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
863     "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
864     "帮助[\033[32mh\033[33m] |");
865 sysadm 1.81 break;
866     }
867    
868     return 0;
869     }
870    
871 sysadm 1.89 int display_file(const char *filename, int eof_exit)
872 sysadm 1.78 {
873 sysadm 1.81 int ret;
874 sysadm 1.130 void *p_shm;
875 sysadm 1.78 size_t data_len;
876     long line_total;
877     const void *p_data;
878     const long *p_line_offsets;
879    
880     if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
881     {
882     log_error("get_file_shm(%s) error\n", filename);
883     return KEY_NULL;
884     }
885    
886 sysadm 1.101 if (user_online_update("VIEW_FILE") < 0)
887     {
888     log_error("user_online_update(VIEW_FILE) error\n");
889     }
890    
891 sysadm 1.89 ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
892 sysadm 1.78
893 sysadm 1.69 if (detach_file_shm(p_shm) < 0)
894     {
895     log_error("detach_file_shm(%s) error\n", filename);
896     }
897    
898 sysadm 1.81 return ret;
899 sysadm 1.1 }
900 sysadm 1.9
901 sysadm 1.73 int show_top(const char *str_left, const char *str_middle, const char *str_right)
902 sysadm 1.9 {
903 sysadm 1.71 char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
904     char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
905     char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
906 sysadm 1.70 int str_left_len;
907 sysadm 1.71 int str_middle_len;
908 sysadm 1.70 int str_right_len;
909 sysadm 1.71 int eol;
910 sysadm 1.51 int len;
911 sysadm 1.40
912 sysadm 1.71 strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
913     str_left_f[sizeof(str_left_f) - 1] = '\0';
914 sysadm 1.105 len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
915 sysadm 1.71 str_left_f[len] = '\0';
916    
917     strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
918     str_middle_f[sizeof(str_middle_f) - 1] = '\0';
919 sysadm 1.105 len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
920 sysadm 1.71 str_middle_f[len] = '\0';
921    
922 sysadm 1.73 strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
923 sysadm 1.71 str_right_f[sizeof(str_right_f) - 1] = '\0';
924 sysadm 1.105 len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
925 sysadm 1.71 str_right_f[len] = '\0';
926 sysadm 1.9
927 sysadm 1.21 moveto(1, 0);
928 sysadm 1.26 clrtoeol();
929 sysadm 1.105 prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
930     str_left_f, 44 - str_left_len - str_middle_len, "",
931     str_middle_f, 36 - str_right_len, "", str_right_f);
932 sysadm 1.9
933 sysadm 1.21 return 0;
934 sysadm 1.9 }
935    
936 sysadm 1.57 int show_bottom(const char *msg)
937 sysadm 1.9 {
938 sysadm 1.26 char str_time[LINE_BUFFER_LEN];
939 sysadm 1.119 int len_str_time;
940 sysadm 1.21 time_t time_online;
941     struct tm *tm_online;
942 sysadm 1.77 char msg_f[LINE_BUFFER_LEN];
943 sysadm 1.72 int eol;
944 sysadm 1.119 int len_msg;
945 sysadm 1.58 int len;
946     int len_username;
947 sysadm 1.88 char str_tm_online[LINE_BUFFER_LEN];
948 sysadm 1.125 int len_str_tm_online;
949 sysadm 1.9
950 sysadm 1.119 len_str_time = (int)get_time_str(str_time, sizeof(str_time));
951 sysadm 1.9
952 sysadm 1.76 msg_f[0] = '\0';
953 sysadm 1.119 len_msg = 0;
954 sysadm 1.77 if (msg != NULL)
955 sysadm 1.76 {
956 sysadm 1.77 strncpy(msg_f, msg, sizeof(msg_f) - 1);
957 sysadm 1.76 msg_f[sizeof(msg_f) - 1] = '\0';
958 sysadm 1.119 len = split_line(msg_f, 23, &eol, &len_msg, 1);
959 sysadm 1.77 msg_f[len] = '\0';
960 sysadm 1.76 }
961 sysadm 1.58
962     len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
963    
964 sysadm 1.99 time_online = time(NULL) - BBS_login_tm;
965 sysadm 1.21 tm_online = gmtime(&time_online);
966 sysadm 1.118 if (tm_online->tm_mday > 1)
967 sysadm 1.88 {
968     snprintf(str_tm_online, sizeof(str_tm_online),
969 sysadm 1.119 "\033[36m%d\033[33md \033[36m%d\033[33m:\033[36m%.2d",
970     tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min);
971 sysadm 1.88 }
972     else
973     {
974     snprintf(str_tm_online, sizeof(str_tm_online),
975 sysadm 1.119 "\033[36m%d\033[33m:\033[36m%.2d",
976 sysadm 1.89 tm_online->tm_hour, tm_online->tm_min);
977 sysadm 1.88 }
978 sysadm 1.125 len_str_tm_online = str_length(str_tm_online, 1);
979 sysadm 1.9
980 sysadm 1.53 moveto(SCREEN_ROWS, 0);
981 sysadm 1.26 clrtoeol();
982 sysadm 1.119 prints("\033[1;44;33m时间[\033[36m%s\033[33m]%s%*s \033[33m用户[\033[36m%s\033[33m][%s\033[33m]\033[m",
983 sysadm 1.127 str_time, msg_f, 65 - len_str_time - len_msg - len_username - len_str_tm_online,
984     "", BBS_username, str_tm_online);
985 sysadm 1.9
986 sysadm 1.21 return 0;
987 sysadm 1.9 }
988    
989 sysadm 1.21 int show_active_board()
990 sysadm 1.9 {
991 sysadm 1.59 static int line_current = 0;
992 sysadm 1.61 static const void *p_shm = NULL;
993 sysadm 1.59 static size_t data_len;
994     static long line_total;
995 sysadm 1.61 static const void *p_data;
996 sysadm 1.59 static const long *p_line_offsets;
997    
998 sysadm 1.65 static time_t t_last_show = 0;
999     static int line_last = 0;
1000    
1001 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
1002 sysadm 1.59 long int len;
1003 sysadm 1.9
1004 sysadm 1.61 if (p_shm == NULL)
1005 sysadm 1.26 {
1006 sysadm 1.69 if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
1007 sysadm 1.9 {
1008 sysadm 1.59 log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD);
1009     return KEY_NULL;
1010 sysadm 1.9 }
1011 sysadm 1.26 }
1012 sysadm 1.21
1013 sysadm 1.99 if (time(NULL) - t_last_show >= 10)
1014 sysadm 1.65 {
1015     line_last = line_current;
1016 sysadm 1.99 t_last_show = time(NULL);
1017 sysadm 1.65 }
1018     else
1019     {
1020     line_current = line_last;
1021     }
1022    
1023 sysadm 1.64 clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
1024 sysadm 1.59
1025 sysadm 1.26 for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
1026     {
1027 sysadm 1.59 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
1028     if (len >= LINE_BUFFER_LEN)
1029 sysadm 1.9 {
1030 sysadm 1.62 log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
1031     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
1032 sysadm 1.59 len = LINE_BUFFER_LEN - 1;
1033 sysadm 1.9 }
1034 sysadm 1.59
1035     memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
1036     buffer[len] = '\0';
1037    
1038 sysadm 1.26 moveto(3 + i, 0);
1039     prints("%s", buffer);
1040 sysadm 1.59
1041     line_current++;
1042 sysadm 1.60 if (line_current >= line_total)
1043 sysadm 1.59 {
1044     line_current = 0;
1045     break;
1046     }
1047 sysadm 1.9 }
1048 sysadm 1.26
1049 sysadm 1.21 return 0;
1050 sysadm 1.9 }
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