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

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Revision 1.128 - (hide annotations)
Sat Nov 8 09:05:59 2025 UTC (4 months, 1 week ago) by sysadm
Branch: MAIN
Changes since 1.127: +42 -8 lines
Content type: text/x-csrc 
Add dynamic wide-character display width in get_data()
Refine dynamic / fixed wide-character display width selection
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 1.9 #include "bbs.h"
10 sysadm 1.6 #include "common.h"
11 sysadm 1.89 #include "editor.h"
12 sysadm 1.54 #include "file_loader.h"
13 sysadm 1.102 #include "io.h"
14     #include "log.h"
15 sysadm 1.101 #include "login.h"
16 sysadm 1.102 #include "screen.h"
17     #include "str_process.h"
18     #include <ctype.h>
19     #include <errno.h>
20 sysadm 1.52 #include <fcntl.h>
21 sysadm 1.98 #include <string.h>
22 sysadm 1.102 #include <stdlib.h>
23 sysadm 1.41 #include <unistd.h>
24 sysadm 1.127 #include <wchar.h>
25 sysadm 1.102 #include <sys/param.h>
26 sysadm 1.6 #include <sys/stat.h>
27 sysadm 1.55 #include <sys/shm.h>
28 sysadm 1.102 #include <sys/types.h>
29 sysadm 1.1
30 sysadm 1.124 const char CTRL_SEQ_CLR_LINE[] = "\033[K";
31 sysadm 1.9
32 sysadm 1.124 static const int ACTIVE_BOARD_HEIGHT = 8;
33    
34     static const int STR_TOP_LEFT_MAX_LEN = 80;
35     static const int STR_TOP_MIDDLE_MAX_LEN = 40;
36     static const int STR_TOP_RIGHT_MAX_LEN = 80;
37 sysadm 1.70
38 sysadm 1.119 static size_t get_time_str(char *s, size_t len)
39 sysadm 1.107 {
40     time_t curtime;
41     struct tm local_tm;
42    
43     time(&curtime);
44     localtime_r(&curtime, &local_tm);
45 sysadm 1.119 size_t j = strftime(s, len, "%m/%d %H:%M %Z", &local_tm);
46 sysadm 1.107
47 sysadm 1.119 return j;
48 sysadm 1.107 }
49    
50 sysadm 1.21 void moveto(int row, int col)
51 sysadm 1.1 {
52 sysadm 1.21 if (row >= 0)
53     {
54     prints("\033[%d;%dH", row, col);
55     }
56     else
57     {
58     prints("\r");
59     }
60 sysadm 1.1 }
61    
62 sysadm 1.21 void clrtoeol()
63 sysadm 1.1 {
64 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
65 sysadm 1.2 }
66    
67 sysadm 1.21 void clrline(int line_begin, int line_end)
68 sysadm 1.5 {
69 sysadm 1.21 int i;
70 sysadm 1.6
71 sysadm 1.21 for (i = line_begin; i <= line_end; i++)
72     {
73     moveto(i, 0);
74 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
75 sysadm 1.21 }
76 sysadm 1.5 }
77    
78 sysadm 1.21 void clrtobot(int line_begin)
79 sysadm 1.16 {
80 sysadm 1.21 moveto(line_begin, 0);
81 sysadm 1.25 prints("\033[J");
82     moveto(line_begin, 0);
83 sysadm 1.16 }
84    
85 sysadm 1.21 void clearscr()
86 sysadm 1.2 {
87 sysadm 1.23 prints("\033[2J");
88 sysadm 1.21 moveto(0, 0);
89 sysadm 1.6 }
90    
91 sysadm 1.113 inline int press_any_key()
92     {
93 sysadm 1.114 return press_any_key_ex(" \033[1;33m按任意键继续...\033[m", 60);
94 sysadm 1.113 }
95    
96 sysadm 1.114 int press_any_key_ex(const char *msg, int sec)
97 sysadm 1.6 {
98 sysadm 1.112 int ch = 0;
99     int duration = 0;
100     time_t t_begin = time(NULL);
101    
102 sysadm 1.53 moveto(SCREEN_ROWS, 0);
103 sysadm 1.21 clrtoeol();
104 sysadm 1.6
105 sysadm 1.113 prints(msg);
106 sysadm 1.21 iflush();
107 sysadm 1.6
108 sysadm 1.114 igetch_reset();
109    
110 sysadm 1.112 do
111     {
112 sysadm 1.114 ch = igetch_t(sec - duration);
113 sysadm 1.112 duration = (int)(time(NULL) - t_begin);
114     } while (!SYS_server_exit && ch == 0 && duration < 60);
115    
116     return ch;
117 sysadm 1.1 }
118    
119 sysadm 1.21 void set_input_echo(int echo)
120 sysadm 1.7 {
121 sysadm 1.21 if (echo)
122     {
123     outc('\x83'); // ASCII code 131
124     }
125     else
126     {
127 sysadm 1.111 // outc ('\x85'); // ASCII code 133
128 sysadm 1.21 prints("\xff\xfb\x01\xff\xfb\x03");
129     }
130 sysadm 1.111 iflush();
131 sysadm 1.7 }
132    
133 sysadm 1.124 static int _str_input(char *buffer, int buf_size, int max_display_len, enum io_echo_t echo_mode)
134 sysadm 1.1 {
135 sysadm 1.104 int ch;
136 sysadm 1.38 int offset = 0;
137 sysadm 1.104 int eol;
138     int display_len;
139 sysadm 1.127 char input_str[5];
140 sysadm 1.104 int str_len = 0;
141 sysadm 1.127 wchar_t wcs[2];
142 sysadm 1.104 char c;
143 sysadm 1.1
144 sysadm 1.38 buffer[buf_size - 1] = '\0';
145 sysadm 1.104 offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
146 sysadm 1.21
147 sysadm 1.47 igetch_reset();
148    
149 sysadm 1.48 while (!SYS_server_exit)
150 sysadm 1.1 {
151 sysadm 1.123 ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
152 sysadm 1.48
153 sysadm 1.104 if (ch == CR)
154 sysadm 1.22 {
155 sysadm 1.21 break;
156 sysadm 1.22 }
157 sysadm 1.104 else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
158 sysadm 1.41 {
159     return -1;
160     }
161 sysadm 1.104 else if (ch == LF || ch == '\0')
162 sysadm 1.22 {
163 sysadm 1.21 continue;
164 sysadm 1.22 }
165 sysadm 1.104 else if (ch == BACKSPACE)
166 sysadm 1.21 {
167     if (offset > 0)
168     {
169 sysadm 1.31 offset--;
170 sysadm 1.104 if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
171 sysadm 1.31 {
172 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
173 sysadm 1.31 {
174 sysadm 1.104 offset--;
175 sysadm 1.31 }
176 sysadm 1.104 display_len--;
177     prints("\033[D \033[D");
178 sysadm 1.31 }
179     buffer[offset] = '\0';
180 sysadm 1.104 display_len--;
181 sysadm 1.31 prints("\033[D \033[D");
182 sysadm 1.21 iflush();
183     }
184     continue;
185     }
186 sysadm 1.104 else if (ch > 255 || iscntrl(ch))
187 sysadm 1.21 {
188     continue;
189     }
190 sysadm 1.104 else if ((ch & 0xff80) == 0x80) // head of multi-byte character
191 sysadm 1.21 {
192 sysadm 1.104 str_len = 0;
193 sysadm 1.115 c = (char)(ch & 0xf0);
194     while (c & 0x80)
195 sysadm 1.104 {
196     input_str[str_len] = (char)(ch - 256);
197     str_len++;
198 sysadm 1.115 c = (c & 0x7f) << 1;
199 sysadm 1.104
200 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
201 sysadm 1.104 {
202     break;
203     }
204    
205     // Expect additional bytes of input
206     ch = igetch(100); // 0.1 second
207     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
208     {
209 sysadm 1.106 #ifdef _DEBUG
210 sysadm 1.104 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
211 sysadm 1.106 #endif
212 sysadm 1.104 str_len = 0;
213     break;
214     }
215     }
216 sysadm 1.127 input_str[str_len] = '\0';
217 sysadm 1.104
218     if (str_len == 0) // Incomplete input
219     {
220     continue;
221     }
222    
223 sysadm 1.127 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
224     {
225     log_error("mbstowcs() error\n");
226     }
227     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
228 sysadm 1.31 {
229     outc('\a');
230     iflush();
231     continue;
232     }
233 sysadm 1.104
234     memcpy(buffer + offset, input_str, (size_t)str_len);
235     offset += str_len;
236     buffer[offset] = '\0';
237     display_len += 2;
238    
239     switch (echo_mode)
240     {
241     case DOECHO:
242     prints(input_str);
243     break;
244     case NOECHO:
245     prints("**");
246     break;
247     }
248 sysadm 1.21 }
249 sysadm 1.104 else if (ch >= 32 && ch < 127) // Printable character
250 sysadm 1.21 {
251 sysadm 1.104 if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
252     {
253     outc('\a');
254     iflush();
255     continue;
256     }
257 sysadm 1.43
258 sysadm 1.104 buffer[offset++] = (char)ch;
259     buffer[offset] = '\0';
260     display_len++;
261 sysadm 1.43
262 sysadm 1.104 switch (echo_mode)
263     {
264     case DOECHO:
265     outc((char)ch);
266     break;
267     case NOECHO:
268     outc('*');
269     break;
270     }
271 sysadm 1.21 }
272 sysadm 1.104 else // Invalid character
273 sysadm 1.21 {
274 sysadm 1.104 continue;
275 sysadm 1.21 }
276 sysadm 1.104
277     iflush();
278 sysadm 1.6 }
279 sysadm 1.1
280 sysadm 1.21 return offset;
281 sysadm 1.1 }
282    
283 sysadm 1.124 int str_input(char *buffer, int buf_size, enum io_echo_t echo_mode)
284 sysadm 1.18 {
285 sysadm 1.32 int len;
286    
287     buffer[0] = '\0';
288 sysadm 1.21
289 sysadm 1.104 len = _str_input(buffer, buf_size, buf_size, echo_mode);
290 sysadm 1.21
291 sysadm 1.32 prints("\r\n");
292     iflush();
293 sysadm 1.21
294 sysadm 1.32 return len;
295 sysadm 1.115 }
296 sysadm 1.18
297 sysadm 1.108 int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
298 sysadm 1.15 {
299 sysadm 1.108 int len = 0;
300     int col_cur = 0;
301     int ch;
302     int offset = 0;
303     int eol;
304     int display_len;
305 sysadm 1.127 char input_str[5];
306 sysadm 1.128 int str_len = 0;
307 sysadm 1.127 wchar_t wcs[2];
308 sysadm 1.128 int wc_len;
309 sysadm 1.108 char c;
310    
311     buffer[buf_size - 1] = '\0';
312     offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
313     buffer[offset] = '\0';
314     len = offset;
315     col_cur = col + str_length(prompt, 1) + display_len;
316 sysadm 1.15
317 sysadm 1.21 moveto(row, col);
318 sysadm 1.80 prints("%s", prompt);
319     prints("%s", buffer);
320 sysadm 1.108 prints("%*s", max_display_len - display_len, "");
321     moveto(row, col_cur);
322 sysadm 1.21 iflush();
323 sysadm 1.15
324 sysadm 1.108 igetch_reset();
325    
326     while (!SYS_server_exit)
327     {
328 sysadm 1.123 ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
329 sysadm 1.108
330     if (ch == CR)
331     {
332     break;
333     }
334     else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
335     {
336     return -1;
337     }
338     else if (ch == LF || ch == '\0')
339     {
340     continue;
341     }
342     else if (ch == BACKSPACE)
343     {
344     if (offset > 0)
345     {
346     str_len = 1;
347     offset--;
348     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
349     {
350 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
351 sysadm 1.108 {
352     str_len++;
353     offset--;
354     }
355 sysadm 1.128
356     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
357     {
358     log_error("mbstowcs() error\n");
359     }
360     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
361    
362     if (wc_len == 2)
363     {
364     display_len--;
365     col_cur--;
366     }
367 sysadm 1.108 }
368    
369     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
370     len -= str_len;
371     buffer[len] = '\0';
372     display_len--;
373     col_cur--;
374    
375     moveto(row, col_cur);
376     prints("%s", buffer + offset);
377     prints("%*s", max_display_len - display_len, "");
378     moveto(row, col_cur);
379     iflush();
380     }
381     continue;
382     }
383     else if (ch == KEY_DEL)
384     {
385     if (offset < len)
386     {
387     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
388     {
389     str_len = 0;
390 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
391     while (c & 0x80)
392 sysadm 1.108 {
393     str_len++;
394 sysadm 1.115 c = (c & 0x7f) << 1;
395 sysadm 1.108 }
396     display_len--;
397     }
398     else
399     {
400     str_len = 1;
401     }
402    
403     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
404     len -= str_len;
405     buffer[len] = '\0';
406     display_len--;
407    
408     moveto(row, col_cur);
409     prints("%s", buffer + offset);
410     prints("%*s", max_display_len - display_len, "");
411     moveto(row, col_cur);
412     iflush();
413     }
414     continue;
415     }
416     else if (ch == KEY_LEFT)
417     {
418     if (offset > 0)
419     {
420     str_len = 1;
421     offset--;
422     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
423     {
424 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
425 sysadm 1.108 {
426     str_len++;
427     offset--;
428     }
429 sysadm 1.128
430     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
431     {
432     log_error("mbstowcs() error\n");
433     }
434     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
435    
436     if (wc_len == 2)
437     {
438     col_cur--;
439     }
440 sysadm 1.108 }
441     col_cur--;
442    
443     moveto(row, col_cur);
444     iflush();
445     }
446     continue;
447     }
448     else if (ch == KEY_RIGHT)
449     {
450     if (offset < len)
451     {
452     str_len = 0;
453     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
454     {
455 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
456     while (c & 0x80)
457 sysadm 1.108 {
458     str_len++;
459 sysadm 1.115 c = (c & 0x7f) << 1;
460 sysadm 1.108 }
461 sysadm 1.128
462     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
463     {
464     log_error("mbstowcs() error\n");
465     }
466     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
467    
468     if (wc_len == 2)
469     {
470     col_cur++;
471     }
472 sysadm 1.108 }
473     else
474     {
475     str_len = 1;
476     }
477    
478     col_cur++;
479     offset += str_len;
480    
481     moveto(row, col_cur);
482     iflush();
483     }
484     continue;
485     }
486     else if (ch == KEY_HOME || ch == KEY_UP)
487     {
488     if (offset > 0)
489     {
490     offset = 0;
491     col_cur = col + str_length(prompt, 1);
492    
493     moveto(row, col_cur);
494     iflush();
495     }
496     continue;
497     }
498     else if (ch == KEY_END || ch == KEY_DOWN)
499     {
500     if (offset < len)
501     {
502     offset = len;
503     col_cur = col + str_length(prompt, 1) + display_len;
504    
505     moveto(row, col_cur);
506     iflush();
507     }
508     continue;
509     }
510     else if (ch > 255 || iscntrl(ch))
511     {
512     continue;
513     }
514     else if ((ch & 0xff80) == 0x80) // head of multi-byte character
515     {
516     str_len = 0;
517 sysadm 1.115 c = (char)(ch & 0xf0);
518     while (c & 0x80)
519 sysadm 1.108 {
520     input_str[str_len] = (char)(ch - 256);
521     str_len++;
522 sysadm 1.115 c = (c & 0x7f) << 1;
523 sysadm 1.108
524 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
525 sysadm 1.108 {
526     break;
527     }
528    
529     // Expect additional bytes of input
530     ch = igetch(100); // 0.1 second
531     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
532     {
533     #ifdef _DEBUG
534     log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
535     #endif
536     str_len = 0;
537     break;
538     }
539     }
540 sysadm 1.127 input_str[str_len] = '\0';
541 sysadm 1.108
542     if (str_len == 0) // Incomplete input
543     {
544     continue;
545     }
546    
547 sysadm 1.127 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
548     {
549     log_error("mbstowcs() error\n");
550     }
551 sysadm 1.128 wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
552    
553     if (len + str_len > buf_size - 1 ||
554     display_len + wc_len > max_display_len) // No enough space for Chinese character
555 sysadm 1.108 {
556     outc('\a');
557     iflush();
558     continue;
559     }
560    
561     memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
562     memcpy(buffer + offset, input_str, (size_t)str_len);
563     len += str_len;
564     buffer[len] = '\0';
565 sysadm 1.128 display_len += wc_len;
566 sysadm 1.108
567     moveto(row, col_cur);
568     prints("%s", buffer + offset);
569     prints("%*s", max_display_len - display_len, "");
570    
571 sysadm 1.128 col_cur += wc_len;
572 sysadm 1.108
573     moveto(row, col_cur);
574     iflush();
575    
576     offset += str_len;
577     }
578     else if (ch >= 32 && ch < 127) // Printable character
579     {
580     if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
581     {
582     outc('\a');
583     iflush();
584     continue;
585     }
586    
587     memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
588     buffer[offset] = (char)ch;
589     len++;
590     buffer[len] = '\0';
591     display_len++;
592    
593     moveto(row, col_cur);
594     prints("%s", buffer + offset);
595     prints("%*s", max_display_len - display_len, "");
596    
597     col_cur++;
598    
599     moveto(row, col_cur);
600     iflush();
601    
602     offset++;
603     }
604     else // Invalid character
605     {
606     continue;
607     }
608     }
609 sysadm 1.21
610     return len;
611 sysadm 1.15 }
612    
613 sysadm 1.89 int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
614 sysadm 1.81 display_data_key_handler key_handler, const char *help_filename)
615 sysadm 1.1 {
616 sysadm 1.37 static int show_help = 1;
617 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
618 sysadm 1.85 DISPLAY_CTX ctx;
619 sysadm 1.81 int ch = 0;
620 sysadm 1.91 int input_ok;
621     const int screen_begin_row = 1;
622 sysadm 1.95 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
623     int output_current_row = screen_begin_row;
624     int output_end_row = SCREEN_ROWS - 1;
625 sysadm 1.54 long int line_current = 0;
626 sysadm 1.34 long int len;
627     long int percentile;
628 sysadm 1.54 int loop;
629 sysadm 1.78 int eol, display_len;
630 sysadm 1.52
631 sysadm 1.95 clrline(output_current_row, SCREEN_ROWS);
632 sysadm 1.6
633 sysadm 1.81 // update msg_ext with extended key handler
634 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
635 sysadm 1.81 {
636     return ch;
637     }
638    
639 sysadm 1.54 loop = 1;
640 sysadm 1.44 while (!SYS_server_exit && loop)
641 sysadm 1.6 {
642 sysadm 1.126 if (eof_exit > 0 && line_current >= display_line_total)
643 sysadm 1.27 {
644 sysadm 1.82 if (eof_exit == 1)
645 sysadm 1.27 {
646     ch = press_any_key();
647     }
648 sysadm 1.82 else // if (eof_exit == 2)
649 sysadm 1.27 {
650     iflush();
651     }
652    
653     loop = 0;
654     break;
655     }
656    
657 sysadm 1.95 if (line_current >= display_line_total || output_current_row > output_end_row)
658 sysadm 1.21 {
659 sysadm 1.95 ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
660 sysadm 1.85
661 sysadm 1.95 if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
662 sysadm 1.27 {
663 sysadm 1.95 percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
664 sysadm 1.85 ctx.reach_end = 0;
665 sysadm 1.27 }
666     else
667     {
668     percentile = 100;
669 sysadm 1.85 ctx.reach_end = 1;
670 sysadm 1.27 }
671 sysadm 1.6
672 sysadm 1.95 ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
673     ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
674 sysadm 1.85
675 sysadm 1.78 snprintf(buffer, sizeof(buffer),
676 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",
677 sysadm 1.85 ctx.line_top,
678     ctx.line_bottom,
679     percentile,
680     ctx.msg);
681 sysadm 1.78
682 sysadm 1.97 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
683 sysadm 1.81 for (; display_len < SCREEN_COLS; display_len++)
684 sysadm 1.78 {
685     buffer[len++] = ' ';
686     }
687     buffer[len] = '\0';
688     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
689    
690 sysadm 1.53 moveto(SCREEN_ROWS, 0);
691 sysadm 1.80 prints("%s", buffer);
692 sysadm 1.26 iflush();
693 sysadm 1.6
694 sysadm 1.26 input_ok = 0;
695 sysadm 1.44 while (!SYS_server_exit && !input_ok)
696 sysadm 1.21 {
697 sysadm 1.123 ch = igetch_t(BBS_max_user_idle_time);
698 sysadm 1.94 input_ok = 1;
699    
700 sysadm 1.110 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
701     {
702     BBS_last_access_tm = time(NULL);
703     }
704    
705 sysadm 1.81 // extended key handler
706 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
707 sysadm 1.81 {
708     goto cleanup;
709     }
710    
711 sysadm 1.26 switch (ch)
712 sysadm 1.21 {
713 sysadm 1.67 case KEY_NULL:
714 sysadm 1.110 log_error("KEY_NULL\n");
715     goto cleanup;
716 sysadm 1.41 case KEY_TIMEOUT:
717 sysadm 1.110 log_error("User input timeout\n");
718 sysadm 1.41 goto cleanup;
719 sysadm 1.50 case KEY_HOME:
720 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
721 sysadm 1.84 {
722     break;
723     }
724 sysadm 1.54 line_current = 0;
725 sysadm 1.95 output_current_row = screen_begin_row;
726     output_end_row = SCREEN_ROWS - 1;
727     clrline(output_current_row, SCREEN_ROWS);
728 sysadm 1.50 break;
729     case KEY_END:
730 sysadm 1.91 if (display_line_total < screen_row_total)
731 sysadm 1.83 {
732 sysadm 1.84 break;
733 sysadm 1.83 }
734 sysadm 1.91 line_current = display_line_total - screen_row_total;
735 sysadm 1.95 output_current_row = screen_begin_row;
736     output_end_row = SCREEN_ROWS - 1;
737     clrline(output_current_row, SCREEN_ROWS);
738 sysadm 1.50 break;
739 sysadm 1.26 case KEY_UP:
740 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
741 sysadm 1.21 {
742     break;
743 sysadm 1.26 }
744 sysadm 1.95 line_current -= output_current_row;
745     output_current_row = screen_begin_row;
746 sysadm 1.89 // screen_end_line = screen_begin_line;
747 sysadm 1.39 // prints("\033[T"); // Scroll down 1 line
748 sysadm 1.95 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
749 sysadm 1.26 break;
750 sysadm 1.49 case CR:
751 sysadm 1.26 case KEY_DOWN:
752 sysadm 1.95 if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
753 sysadm 1.26 {
754 sysadm 1.21 break;
755 sysadm 1.26 }
756 sysadm 1.95 line_current += (screen_row_total - (output_current_row - screen_begin_row));
757     output_current_row = screen_row_total;
758     output_end_row = SCREEN_ROWS - 1;
759 sysadm 1.53 moveto(SCREEN_ROWS, 0);
760 sysadm 1.26 clrtoeol();
761 sysadm 1.104 // prints("\033[S"); // Scroll up 1 line
762 sysadm 1.103 prints("\n"); // Legacy Cterm only works with this line
763 sysadm 1.26 break;
764     case KEY_PGUP:
765 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
766 sysadm 1.26 {
767 sysadm 1.21 break;
768 sysadm 1.26 }
769 sysadm 1.95 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
770 sysadm 1.54 if (line_current < 0)
771 sysadm 1.26 {
772 sysadm 1.54 line_current = 0;
773 sysadm 1.26 }
774 sysadm 1.95 output_current_row = screen_begin_row;
775     output_end_row = SCREEN_ROWS - 1;
776     clrline(output_current_row, SCREEN_ROWS);
777 sysadm 1.26 break;
778 sysadm 1.116 case KEY_SPACE:
779 sysadm 1.26 case KEY_PGDN:
780 sysadm 1.95 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
781 sysadm 1.26 {
782 sysadm 1.21 break;
783     }
784 sysadm 1.95 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
785 sysadm 1.91 if (line_current + screen_row_total > display_line_total) // No enough lines to display
786 sysadm 1.26 {
787 sysadm 1.91 line_current = display_line_total - screen_row_total;
788 sysadm 1.26 }
789 sysadm 1.95 output_current_row = screen_begin_row;
790     output_end_row = SCREEN_ROWS - 1;
791     clrline(output_current_row, SCREEN_ROWS);
792 sysadm 1.26 break;
793 sysadm 1.74 case KEY_ESC:
794 sysadm 1.26 case KEY_LEFT:
795 sysadm 1.27 loop = 0;
796 sysadm 1.26 break;
797     case 'h':
798 sysadm 1.81 if (!show_help) // Not reentrant
799 sysadm 1.37 {
800     break;
801     }
802 sysadm 1.26 // Display help information
803 sysadm 1.37 show_help = 0;
804 sysadm 1.89 display_file(help_filename, 1);
805 sysadm 1.37 show_help = 1;
806 sysadm 1.81 case KEY_F5:
807 sysadm 1.26 // Refresh after display help information
808 sysadm 1.95 line_current -= (output_current_row - screen_begin_row);
809     output_current_row = screen_begin_row;
810     output_end_row = SCREEN_ROWS - 1;
811     clrline(output_current_row, SCREEN_ROWS);
812 sysadm 1.89 break;
813 sysadm 1.81 case 0: // Refresh bottom line
814     break;
815 sysadm 1.26 default:
816     input_ok = 0;
817     break;
818 sysadm 1.21 }
819 sysadm 1.6 }
820 sysadm 1.21
821 sysadm 1.26 continue;
822     }
823 sysadm 1.21
824 sysadm 1.55 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
825 sysadm 1.89 if (len >= sizeof(buffer))
826 sysadm 1.26 {
827 sysadm 1.87 log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
828 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
829 sysadm 1.89 len = sizeof(buffer) - 1;
830 sysadm 1.26 }
831 sysadm 1.87 else if (len < 0)
832     {
833     log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
834     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
835     len = 0;
836     }
837 sysadm 1.52
838 sysadm 1.55 memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
839 sysadm 1.52 buffer[len] = '\0';
840    
841 sysadm 1.95 moveto(output_current_row, 0);
842 sysadm 1.26 clrtoeol();
843     prints("%s", buffer);
844 sysadm 1.54 line_current++;
845 sysadm 1.95 output_current_row++;
846 sysadm 1.26 }
847 sysadm 1.6
848 sysadm 1.41 cleanup:
849 sysadm 1.78 return ch;
850     }
851    
852 sysadm 1.126 int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
853 sysadm 1.81 {
854 sysadm 1.85 switch (*p_key)
855 sysadm 1.81 {
856     case 0: // Set msg
857 sysadm 1.85 snprintf(p_ctx->msg, sizeof(p_ctx->msg),
858 sysadm 1.104 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
859     "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
860     "帮助[\033[32mh\033[33m] |");
861 sysadm 1.81 break;
862     }
863    
864     return 0;
865     }
866    
867 sysadm 1.89 int display_file(const char *filename, int eof_exit)
868 sysadm 1.78 {
869 sysadm 1.81 int ret;
870 sysadm 1.78 const void *p_shm;
871     size_t data_len;
872     long line_total;
873     const void *p_data;
874     const long *p_line_offsets;
875    
876     if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
877     {
878     log_error("get_file_shm(%s) error\n", filename);
879     return KEY_NULL;
880     }
881    
882 sysadm 1.101 if (user_online_update("VIEW_FILE") < 0)
883     {
884     log_error("user_online_update(VIEW_FILE) error\n");
885     }
886    
887 sysadm 1.89 ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
888 sysadm 1.78
889 sysadm 1.69 if (detach_file_shm(p_shm) < 0)
890     {
891     log_error("detach_file_shm(%s) error\n", filename);
892     }
893    
894 sysadm 1.81 return ret;
895 sysadm 1.1 }
896 sysadm 1.9
897 sysadm 1.73 int show_top(const char *str_left, const char *str_middle, const char *str_right)
898 sysadm 1.9 {
899 sysadm 1.71 char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
900     char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
901     char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
902 sysadm 1.70 int str_left_len;
903 sysadm 1.71 int str_middle_len;
904 sysadm 1.70 int str_right_len;
905 sysadm 1.71 int eol;
906 sysadm 1.51 int len;
907 sysadm 1.40
908 sysadm 1.71 strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
909     str_left_f[sizeof(str_left_f) - 1] = '\0';
910 sysadm 1.105 len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
911 sysadm 1.71 str_left_f[len] = '\0';
912    
913     strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
914     str_middle_f[sizeof(str_middle_f) - 1] = '\0';
915 sysadm 1.105 len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
916 sysadm 1.71 str_middle_f[len] = '\0';
917    
918 sysadm 1.73 strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
919 sysadm 1.71 str_right_f[sizeof(str_right_f) - 1] = '\0';
920 sysadm 1.105 len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
921 sysadm 1.71 str_right_f[len] = '\0';
922 sysadm 1.9
923 sysadm 1.21 moveto(1, 0);
924 sysadm 1.26 clrtoeol();
925 sysadm 1.105 prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
926     str_left_f, 44 - str_left_len - str_middle_len, "",
927     str_middle_f, 36 - str_right_len, "", str_right_f);
928 sysadm 1.9
929 sysadm 1.21 return 0;
930 sysadm 1.9 }
931    
932 sysadm 1.57 int show_bottom(const char *msg)
933 sysadm 1.9 {
934 sysadm 1.26 char str_time[LINE_BUFFER_LEN];
935 sysadm 1.119 int len_str_time;
936 sysadm 1.21 time_t time_online;
937     struct tm *tm_online;
938 sysadm 1.77 char msg_f[LINE_BUFFER_LEN];
939 sysadm 1.72 int eol;
940 sysadm 1.119 int len_msg;
941 sysadm 1.58 int len;
942     int len_username;
943 sysadm 1.88 char str_tm_online[LINE_BUFFER_LEN];
944 sysadm 1.125 int len_str_tm_online;
945 sysadm 1.9
946 sysadm 1.119 len_str_time = (int)get_time_str(str_time, sizeof(str_time));
947 sysadm 1.9
948 sysadm 1.76 msg_f[0] = '\0';
949 sysadm 1.119 len_msg = 0;
950 sysadm 1.77 if (msg != NULL)
951 sysadm 1.76 {
952 sysadm 1.77 strncpy(msg_f, msg, sizeof(msg_f) - 1);
953 sysadm 1.76 msg_f[sizeof(msg_f) - 1] = '\0';
954 sysadm 1.119 len = split_line(msg_f, 23, &eol, &len_msg, 1);
955 sysadm 1.77 msg_f[len] = '\0';
956 sysadm 1.76 }
957 sysadm 1.58
958     len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
959    
960 sysadm 1.99 time_online = time(NULL) - BBS_login_tm;
961 sysadm 1.21 tm_online = gmtime(&time_online);
962 sysadm 1.118 if (tm_online->tm_mday > 1)
963 sysadm 1.88 {
964     snprintf(str_tm_online, sizeof(str_tm_online),
965 sysadm 1.119 "\033[36m%d\033[33md \033[36m%d\033[33m:\033[36m%.2d",
966     tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min);
967 sysadm 1.88 }
968     else
969     {
970     snprintf(str_tm_online, sizeof(str_tm_online),
971 sysadm 1.119 "\033[36m%d\033[33m:\033[36m%.2d",
972 sysadm 1.89 tm_online->tm_hour, tm_online->tm_min);
973 sysadm 1.88 }
974 sysadm 1.125 len_str_tm_online = str_length(str_tm_online, 1);
975 sysadm 1.9
976 sysadm 1.53 moveto(SCREEN_ROWS, 0);
977 sysadm 1.26 clrtoeol();
978 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",
979 sysadm 1.127 str_time, msg_f, 65 - len_str_time - len_msg - len_username - len_str_tm_online,
980     "", BBS_username, str_tm_online);
981 sysadm 1.9
982 sysadm 1.21 return 0;
983 sysadm 1.9 }
984    
985 sysadm 1.21 int show_active_board()
986 sysadm 1.9 {
987 sysadm 1.59 static int line_current = 0;
988 sysadm 1.61 static const void *p_shm = NULL;
989 sysadm 1.59 static size_t data_len;
990     static long line_total;
991 sysadm 1.61 static const void *p_data;
992 sysadm 1.59 static const long *p_line_offsets;
993    
994 sysadm 1.65 static time_t t_last_show = 0;
995     static int line_last = 0;
996    
997 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
998 sysadm 1.59 long int len;
999 sysadm 1.9
1000 sysadm 1.61 if (p_shm == NULL)
1001 sysadm 1.26 {
1002 sysadm 1.69 if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
1003 sysadm 1.9 {
1004 sysadm 1.59 log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD);
1005     return KEY_NULL;
1006 sysadm 1.9 }
1007 sysadm 1.26 }
1008 sysadm 1.21
1009 sysadm 1.99 if (time(NULL) - t_last_show >= 10)
1010 sysadm 1.65 {
1011     line_last = line_current;
1012 sysadm 1.99 t_last_show = time(NULL);
1013 sysadm 1.65 }
1014     else
1015     {
1016     line_current = line_last;
1017     }
1018    
1019 sysadm 1.64 clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
1020 sysadm 1.59
1021 sysadm 1.26 for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
1022     {
1023 sysadm 1.59 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
1024     if (len >= LINE_BUFFER_LEN)
1025 sysadm 1.9 {
1026 sysadm 1.62 log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
1027     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
1028 sysadm 1.59 len = LINE_BUFFER_LEN - 1;
1029 sysadm 1.9 }
1030 sysadm 1.59
1031     memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
1032     buffer[len] = '\0';
1033    
1034 sysadm 1.26 moveto(3 + i, 0);
1035     prints("%s", buffer);
1036 sysadm 1.59
1037     line_current++;
1038 sysadm 1.60 if (line_current >= line_total)
1039 sysadm 1.59 {
1040     line_current = 0;
1041     break;
1042     }
1043 sysadm 1.9 }
1044 sysadm 1.26
1045 sysadm 1.21 return 0;
1046 sysadm 1.9 }
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