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

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Revision 1.138 - (hide annotations)
Sun Dec 28 01:46:21 2025 UTC (2 months, 2 weeks ago) by sysadm
Branch: MAIN
Changes since 1.137: +1 -1 lines
Content type: text/x-csrc 
Set key DEL as alias of key BACKSPACE in str_input()
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 1.102 #include <sys/types.h>
32 sysadm 1.1
33 sysadm 1.124 const char CTRL_SEQ_CLR_LINE[] = "\033[K";
34 sysadm 1.9
35 sysadm 1.124 static const int ACTIVE_BOARD_HEIGHT = 8;
36    
37     static const int STR_TOP_LEFT_MAX_LEN = 80;
38     static const int STR_TOP_MIDDLE_MAX_LEN = 40;
39     static const int STR_TOP_RIGHT_MAX_LEN = 80;
40 sysadm 1.70
41 sysadm 1.119 static size_t get_time_str(char *s, size_t len)
42 sysadm 1.107 {
43     time_t curtime;
44     struct tm local_tm;
45    
46     time(&curtime);
47     localtime_r(&curtime, &local_tm);
48 sysadm 1.119 size_t j = strftime(s, len, "%m/%d %H:%M %Z", &local_tm);
49 sysadm 1.107
50 sysadm 1.119 return j;
51 sysadm 1.107 }
52    
53 sysadm 1.21 void moveto(int row, int col)
54 sysadm 1.1 {
55 sysadm 1.21 if (row >= 0)
56     {
57     prints("\033[%d;%dH", row, col);
58     }
59     else
60     {
61     prints("\r");
62     }
63 sysadm 1.1 }
64    
65 sysadm 1.21 void clrtoeol()
66 sysadm 1.1 {
67 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
68 sysadm 1.2 }
69    
70 sysadm 1.21 void clrline(int line_begin, int line_end)
71 sysadm 1.5 {
72 sysadm 1.21 int i;
73 sysadm 1.6
74 sysadm 1.21 for (i = line_begin; i <= line_end; i++)
75     {
76     moveto(i, 0);
77 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
78 sysadm 1.21 }
79 sysadm 1.5 }
80    
81 sysadm 1.21 void clrtobot(int line_begin)
82 sysadm 1.16 {
83 sysadm 1.21 moveto(line_begin, 0);
84 sysadm 1.25 prints("\033[J");
85     moveto(line_begin, 0);
86 sysadm 1.16 }
87    
88 sysadm 1.21 void clearscr()
89 sysadm 1.2 {
90 sysadm 1.23 prints("\033[2J");
91 sysadm 1.133 moveto(1, 1);
92 sysadm 1.6 }
93    
94 sysadm 1.113 inline int press_any_key()
95     {
96 sysadm 1.114 return press_any_key_ex(" \033[1;33m按任意键继续...\033[m", 60);
97 sysadm 1.113 }
98    
99 sysadm 1.114 int press_any_key_ex(const char *msg, int sec)
100 sysadm 1.6 {
101 sysadm 1.112 int ch = 0;
102     int duration = 0;
103     time_t t_begin = time(NULL);
104    
105 sysadm 1.53 moveto(SCREEN_ROWS, 0);
106 sysadm 1.21 clrtoeol();
107 sysadm 1.6
108 sysadm 1.113 prints(msg);
109 sysadm 1.21 iflush();
110 sysadm 1.6
111 sysadm 1.114 igetch_reset();
112    
113 sysadm 1.112 do
114     {
115 sysadm 1.114 ch = igetch_t(sec - duration);
116 sysadm 1.112 duration = (int)(time(NULL) - t_begin);
117     } while (!SYS_server_exit && ch == 0 && duration < 60);
118    
119     return ch;
120 sysadm 1.1 }
121    
122 sysadm 1.21 void set_input_echo(int echo)
123 sysadm 1.7 {
124 sysadm 1.21 if (echo)
125     {
126     outc('\x83'); // ASCII code 131
127     }
128     else
129     {
130 sysadm 1.111 // outc ('\x85'); // ASCII code 133
131 sysadm 1.21 prints("\xff\xfb\x01\xff\xfb\x03");
132     }
133 sysadm 1.111 iflush();
134 sysadm 1.7 }
135    
136 sysadm 1.124 static int _str_input(char *buffer, int buf_size, int max_display_len, enum io_echo_t echo_mode)
137 sysadm 1.1 {
138 sysadm 1.104 int ch;
139 sysadm 1.38 int offset = 0;
140 sysadm 1.104 int eol;
141     int display_len;
142 sysadm 1.127 char input_str[5];
143 sysadm 1.104 int str_len = 0;
144 sysadm 1.127 wchar_t wcs[2];
145 sysadm 1.104 char c;
146 sysadm 1.1
147 sysadm 1.38 buffer[buf_size - 1] = '\0';
148 sysadm 1.104 offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
149 sysadm 1.21
150 sysadm 1.47 igetch_reset();
151    
152 sysadm 1.48 while (!SYS_server_exit)
153 sysadm 1.1 {
154 sysadm 1.123 ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
155 sysadm 1.48
156 sysadm 1.104 if (ch == CR)
157 sysadm 1.22 {
158 sysadm 1.21 break;
159 sysadm 1.22 }
160 sysadm 1.104 else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
161 sysadm 1.41 {
162     return -1;
163     }
164 sysadm 1.104 else if (ch == LF || ch == '\0')
165 sysadm 1.22 {
166 sysadm 1.21 continue;
167 sysadm 1.22 }
168 sysadm 1.138 else if (ch == BACKSPACE || ch == KEY_DEL)
169 sysadm 1.21 {
170     if (offset > 0)
171     {
172 sysadm 1.31 offset--;
173 sysadm 1.104 if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
174 sysadm 1.31 {
175 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
176 sysadm 1.31 {
177 sysadm 1.104 offset--;
178 sysadm 1.31 }
179 sysadm 1.104 display_len--;
180     prints("\033[D \033[D");
181 sysadm 1.31 }
182     buffer[offset] = '\0';
183 sysadm 1.104 display_len--;
184 sysadm 1.31 prints("\033[D \033[D");
185 sysadm 1.21 iflush();
186     }
187     continue;
188     }
189 sysadm 1.104 else if (ch > 255 || iscntrl(ch))
190 sysadm 1.21 {
191     continue;
192     }
193 sysadm 1.104 else if ((ch & 0xff80) == 0x80) // head of multi-byte character
194 sysadm 1.21 {
195 sysadm 1.104 str_len = 0;
196 sysadm 1.115 c = (char)(ch & 0xf0);
197     while (c & 0x80)
198 sysadm 1.104 {
199     input_str[str_len] = (char)(ch - 256);
200     str_len++;
201 sysadm 1.115 c = (c & 0x7f) << 1;
202 sysadm 1.104
203 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
204 sysadm 1.104 {
205     break;
206     }
207    
208     // Expect additional bytes of input
209     ch = igetch(100); // 0.1 second
210     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
211     {
212 sysadm 1.137 log_debug("Ignore %d bytes of incomplete UTF8 character", str_len);
213 sysadm 1.104 str_len = 0;
214     break;
215     }
216     }
217 sysadm 1.127 input_str[str_len] = '\0';
218 sysadm 1.104
219     if (str_len == 0) // Incomplete input
220     {
221     continue;
222     }
223    
224 sysadm 1.127 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
225     {
226 sysadm 1.137 log_error("mbstowcs() error");
227 sysadm 1.127 }
228     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
229 sysadm 1.31 {
230     outc('\a');
231     iflush();
232     continue;
233     }
234 sysadm 1.104
235     memcpy(buffer + offset, input_str, (size_t)str_len);
236     offset += str_len;
237     buffer[offset] = '\0';
238     display_len += 2;
239    
240     switch (echo_mode)
241     {
242     case DOECHO:
243     prints(input_str);
244     break;
245     case NOECHO:
246     prints("**");
247     break;
248     }
249 sysadm 1.21 }
250 sysadm 1.104 else if (ch >= 32 && ch < 127) // Printable character
251 sysadm 1.21 {
252 sysadm 1.104 if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
253     {
254     outc('\a');
255     iflush();
256     continue;
257     }
258 sysadm 1.43
259 sysadm 1.104 buffer[offset++] = (char)ch;
260     buffer[offset] = '\0';
261     display_len++;
262 sysadm 1.43
263 sysadm 1.104 switch (echo_mode)
264     {
265     case DOECHO:
266     outc((char)ch);
267     break;
268     case NOECHO:
269     outc('*');
270     break;
271     }
272 sysadm 1.21 }
273 sysadm 1.104 else // Invalid character
274 sysadm 1.21 {
275 sysadm 1.104 continue;
276 sysadm 1.21 }
277 sysadm 1.104
278     iflush();
279 sysadm 1.6 }
280 sysadm 1.1
281 sysadm 1.21 return offset;
282 sysadm 1.1 }
283    
284 sysadm 1.124 int str_input(char *buffer, int buf_size, enum io_echo_t echo_mode)
285 sysadm 1.18 {
286 sysadm 1.32 int len;
287    
288     buffer[0] = '\0';
289 sysadm 1.21
290 sysadm 1.104 len = _str_input(buffer, buf_size, buf_size, echo_mode);
291 sysadm 1.21
292 sysadm 1.32 prints("\r\n");
293     iflush();
294 sysadm 1.21
295 sysadm 1.32 return len;
296 sysadm 1.115 }
297 sysadm 1.18
298 sysadm 1.108 int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
299 sysadm 1.15 {
300 sysadm 1.108 int len = 0;
301     int col_cur = 0;
302     int ch;
303     int offset = 0;
304     int eol;
305     int display_len;
306 sysadm 1.127 char input_str[5];
307 sysadm 1.128 int str_len = 0;
308 sysadm 1.127 wchar_t wcs[2];
309 sysadm 1.128 int wc_len;
310 sysadm 1.108 char c;
311    
312     buffer[buf_size - 1] = '\0';
313     offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
314     buffer[offset] = '\0';
315     len = offset;
316     col_cur = col + str_length(prompt, 1) + display_len;
317 sysadm 1.15
318 sysadm 1.21 moveto(row, col);
319 sysadm 1.80 prints("%s", prompt);
320     prints("%s", buffer);
321 sysadm 1.108 prints("%*s", max_display_len - display_len, "");
322     moveto(row, col_cur);
323 sysadm 1.21 iflush();
324 sysadm 1.15
325 sysadm 1.108 igetch_reset();
326    
327     while (!SYS_server_exit)
328     {
329 sysadm 1.123 ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
330 sysadm 1.108
331     if (ch == CR)
332     {
333     break;
334     }
335     else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
336     {
337     return -1;
338     }
339     else if (ch == LF || ch == '\0')
340     {
341     continue;
342     }
343     else if (ch == BACKSPACE)
344     {
345     if (offset > 0)
346     {
347     str_len = 1;
348     offset--;
349     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
350     {
351 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
352 sysadm 1.108 {
353     str_len++;
354     offset--;
355     }
356 sysadm 1.128
357     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
358     {
359 sysadm 1.137 log_error("mbstowcs() error");
360 sysadm 1.128 }
361     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
362    
363     if (wc_len == 2)
364     {
365     display_len--;
366     col_cur--;
367     }
368 sysadm 1.108 }
369    
370     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
371     len -= str_len;
372     buffer[len] = '\0';
373     display_len--;
374     col_cur--;
375    
376     moveto(row, col_cur);
377     prints("%s", buffer + offset);
378     prints("%*s", max_display_len - display_len, "");
379     moveto(row, col_cur);
380     iflush();
381     }
382     continue;
383     }
384     else if (ch == KEY_DEL)
385     {
386     if (offset < len)
387     {
388     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
389     {
390     str_len = 0;
391 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
392     while (c & 0x80)
393 sysadm 1.108 {
394     str_len++;
395 sysadm 1.115 c = (c & 0x7f) << 1;
396 sysadm 1.108 }
397     display_len--;
398     }
399     else
400     {
401     str_len = 1;
402     }
403    
404     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
405     len -= str_len;
406     buffer[len] = '\0';
407     display_len--;
408    
409     moveto(row, col_cur);
410     prints("%s", buffer + offset);
411     prints("%*s", max_display_len - display_len, "");
412     moveto(row, col_cur);
413     iflush();
414     }
415     continue;
416     }
417     else if (ch == KEY_LEFT)
418     {
419     if (offset > 0)
420     {
421     str_len = 1;
422     offset--;
423     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
424     {
425 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
426 sysadm 1.108 {
427     str_len++;
428     offset--;
429     }
430 sysadm 1.128
431     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
432     {
433 sysadm 1.137 log_error("mbstowcs() error");
434 sysadm 1.128 }
435     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
436    
437     if (wc_len == 2)
438     {
439     col_cur--;
440     }
441 sysadm 1.108 }
442     col_cur--;
443    
444     moveto(row, col_cur);
445     iflush();
446     }
447     continue;
448     }
449     else if (ch == KEY_RIGHT)
450     {
451     if (offset < len)
452     {
453     str_len = 0;
454     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
455     {
456 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
457     while (c & 0x80)
458 sysadm 1.108 {
459     str_len++;
460 sysadm 1.115 c = (c & 0x7f) << 1;
461 sysadm 1.108 }
462 sysadm 1.128
463     if (mbstowcs(wcs, buffer + offset, 1) == (size_t)-1)
464     {
465 sysadm 1.137 log_error("mbstowcs() error");
466 sysadm 1.128 }
467     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
468    
469     if (wc_len == 2)
470     {
471     col_cur++;
472     }
473 sysadm 1.108 }
474     else
475     {
476     str_len = 1;
477     }
478    
479     col_cur++;
480     offset += str_len;
481    
482     moveto(row, col_cur);
483     iflush();
484     }
485     continue;
486     }
487     else if (ch == KEY_HOME || ch == KEY_UP)
488     {
489     if (offset > 0)
490     {
491     offset = 0;
492     col_cur = col + str_length(prompt, 1);
493    
494     moveto(row, col_cur);
495     iflush();
496     }
497     continue;
498     }
499     else if (ch == KEY_END || ch == KEY_DOWN)
500     {
501     if (offset < len)
502     {
503     offset = len;
504     col_cur = col + str_length(prompt, 1) + display_len;
505    
506     moveto(row, col_cur);
507     iflush();
508     }
509     continue;
510     }
511     else if (ch > 255 || iscntrl(ch))
512     {
513     continue;
514     }
515     else if ((ch & 0xff80) == 0x80) // head of multi-byte character
516     {
517     str_len = 0;
518 sysadm 1.115 c = (char)(ch & 0xf0);
519     while (c & 0x80)
520 sysadm 1.108 {
521     input_str[str_len] = (char)(ch - 256);
522     str_len++;
523 sysadm 1.115 c = (c & 0x7f) << 1;
524 sysadm 1.108
525 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
526 sysadm 1.108 {
527     break;
528     }
529    
530     // Expect additional bytes of input
531     ch = igetch(100); // 0.1 second
532     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
533     {
534 sysadm 1.137 log_debug("Ignore %d bytes of incomplete UTF8 character", str_len);
535 sysadm 1.108 str_len = 0;
536     break;
537     }
538     }
539 sysadm 1.127 input_str[str_len] = '\0';
540 sysadm 1.108
541     if (str_len == 0) // Incomplete input
542     {
543     continue;
544     }
545    
546 sysadm 1.127 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
547     {
548 sysadm 1.137 log_error("mbstowcs() error");
549 sysadm 1.127 }
550 sysadm 1.128 wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
551    
552     if (len + str_len > buf_size - 1 ||
553     display_len + wc_len > max_display_len) // No enough space for Chinese character
554 sysadm 1.108 {
555     outc('\a');
556     iflush();
557     continue;
558     }
559    
560     memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
561     memcpy(buffer + offset, input_str, (size_t)str_len);
562     len += str_len;
563     buffer[len] = '\0';
564 sysadm 1.128 display_len += wc_len;
565 sysadm 1.108
566     moveto(row, col_cur);
567     prints("%s", buffer + offset);
568     prints("%*s", max_display_len - display_len, "");
569    
570 sysadm 1.128 col_cur += wc_len;
571 sysadm 1.108
572     moveto(row, col_cur);
573     iflush();
574    
575     offset += str_len;
576     }
577     else if (ch >= 32 && ch < 127) // Printable character
578     {
579     if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
580     {
581     outc('\a');
582     iflush();
583     continue;
584     }
585    
586     memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
587     buffer[offset] = (char)ch;
588     len++;
589     buffer[len] = '\0';
590     display_len++;
591    
592     moveto(row, col_cur);
593     prints("%s", buffer + offset);
594     prints("%*s", max_display_len - display_len, "");
595    
596     col_cur++;
597    
598     moveto(row, col_cur);
599     iflush();
600    
601     offset++;
602     }
603     else // Invalid character
604     {
605     continue;
606     }
607     }
608 sysadm 1.21
609     return len;
610 sysadm 1.15 }
611    
612 sysadm 1.89 int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
613 sysadm 1.81 display_data_key_handler key_handler, const char *help_filename)
614 sysadm 1.1 {
615 sysadm 1.37 static int show_help = 1;
616 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
617 sysadm 1.85 DISPLAY_CTX ctx;
618 sysadm 1.81 int ch = 0;
619 sysadm 1.91 int input_ok;
620     const int screen_begin_row = 1;
621 sysadm 1.95 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
622     int output_current_row = screen_begin_row;
623     int output_end_row = SCREEN_ROWS - 1;
624 sysadm 1.54 long int line_current = 0;
625 sysadm 1.34 long int len;
626     long int percentile;
627 sysadm 1.54 int loop;
628 sysadm 1.78 int eol, display_len;
629 sysadm 1.52
630 sysadm 1.95 clrline(output_current_row, SCREEN_ROWS);
631 sysadm 1.6
632 sysadm 1.81 // update msg_ext with extended key handler
633 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
634 sysadm 1.81 {
635     return ch;
636     }
637    
638 sysadm 1.54 loop = 1;
639 sysadm 1.44 while (!SYS_server_exit && loop)
640 sysadm 1.6 {
641 sysadm 1.126 if (eof_exit > 0 && line_current >= display_line_total)
642 sysadm 1.27 {
643 sysadm 1.82 if (eof_exit == 1)
644 sysadm 1.27 {
645     ch = press_any_key();
646     }
647 sysadm 1.82 else // if (eof_exit == 2)
648 sysadm 1.27 {
649     iflush();
650     }
651    
652     loop = 0;
653     break;
654     }
655    
656 sysadm 1.95 if (line_current >= display_line_total || output_current_row > output_end_row)
657 sysadm 1.21 {
658 sysadm 1.95 ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
659 sysadm 1.85
660 sysadm 1.95 if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
661 sysadm 1.27 {
662 sysadm 1.95 percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
663 sysadm 1.85 ctx.reach_end = 0;
664 sysadm 1.27 }
665     else
666     {
667     percentile = 100;
668 sysadm 1.85 ctx.reach_end = 1;
669 sysadm 1.27 }
670 sysadm 1.6
671 sysadm 1.95 ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
672     ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
673 sysadm 1.85
674 sysadm 1.78 snprintf(buffer, sizeof(buffer),
675 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",
676 sysadm 1.85 ctx.line_top,
677     ctx.line_bottom,
678     percentile,
679     ctx.msg);
680 sysadm 1.78
681 sysadm 1.97 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
682 sysadm 1.81 for (; display_len < SCREEN_COLS; display_len++)
683 sysadm 1.78 {
684     buffer[len++] = ' ';
685     }
686     buffer[len] = '\0';
687     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
688    
689 sysadm 1.53 moveto(SCREEN_ROWS, 0);
690 sysadm 1.80 prints("%s", buffer);
691 sysadm 1.26 iflush();
692 sysadm 1.6
693 sysadm 1.26 input_ok = 0;
694 sysadm 1.44 while (!SYS_server_exit && !input_ok)
695 sysadm 1.21 {
696 sysadm 1.123 ch = igetch_t(BBS_max_user_idle_time);
697 sysadm 1.94 input_ok = 1;
698    
699 sysadm 1.110 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
700     {
701     BBS_last_access_tm = time(NULL);
702 sysadm 1.132
703     // Refresh current action
704     if (user_online_update(NULL) < 0)
705     {
706 sysadm 1.137 log_error("user_online_update(NULL) error");
707 sysadm 1.132 }
708 sysadm 1.110 }
709    
710 sysadm 1.81 // extended key handler
711 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
712 sysadm 1.81 {
713     goto cleanup;
714     }
715    
716 sysadm 1.26 switch (ch)
717 sysadm 1.21 {
718 sysadm 1.67 case KEY_NULL:
719 sysadm 1.137 log_debug("KEY_NULL");
720 sysadm 1.110 goto cleanup;
721 sysadm 1.41 case KEY_TIMEOUT:
722 sysadm 1.137 log_debug("User input timeout");
723 sysadm 1.41 goto cleanup;
724 sysadm 1.50 case KEY_HOME:
725 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
726 sysadm 1.84 {
727     break;
728     }
729 sysadm 1.54 line_current = 0;
730 sysadm 1.95 output_current_row = screen_begin_row;
731     output_end_row = SCREEN_ROWS - 1;
732     clrline(output_current_row, SCREEN_ROWS);
733 sysadm 1.50 break;
734     case KEY_END:
735 sysadm 1.91 if (display_line_total < screen_row_total)
736 sysadm 1.83 {
737 sysadm 1.84 break;
738 sysadm 1.83 }
739 sysadm 1.91 line_current = display_line_total - screen_row_total;
740 sysadm 1.95 output_current_row = screen_begin_row;
741     output_end_row = SCREEN_ROWS - 1;
742     clrline(output_current_row, SCREEN_ROWS);
743 sysadm 1.50 break;
744 sysadm 1.26 case KEY_UP:
745 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
746 sysadm 1.21 {
747     break;
748 sysadm 1.26 }
749 sysadm 1.95 line_current -= output_current_row;
750     output_current_row = screen_begin_row;
751 sysadm 1.89 // screen_end_line = screen_begin_line;
752 sysadm 1.39 // prints("\033[T"); // Scroll down 1 line
753 sysadm 1.95 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
754 sysadm 1.26 break;
755 sysadm 1.49 case CR:
756 sysadm 1.26 case KEY_DOWN:
757 sysadm 1.95 if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
758 sysadm 1.26 {
759 sysadm 1.21 break;
760 sysadm 1.26 }
761 sysadm 1.95 line_current += (screen_row_total - (output_current_row - screen_begin_row));
762     output_current_row = screen_row_total;
763     output_end_row = SCREEN_ROWS - 1;
764 sysadm 1.53 moveto(SCREEN_ROWS, 0);
765 sysadm 1.26 clrtoeol();
766 sysadm 1.104 // prints("\033[S"); // Scroll up 1 line
767 sysadm 1.103 prints("\n"); // Legacy Cterm only works with this line
768 sysadm 1.26 break;
769     case KEY_PGUP:
770 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
771 sysadm 1.26 {
772 sysadm 1.21 break;
773 sysadm 1.26 }
774 sysadm 1.95 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
775 sysadm 1.54 if (line_current < 0)
776 sysadm 1.26 {
777 sysadm 1.54 line_current = 0;
778 sysadm 1.26 }
779 sysadm 1.95 output_current_row = screen_begin_row;
780     output_end_row = SCREEN_ROWS - 1;
781     clrline(output_current_row, SCREEN_ROWS);
782 sysadm 1.26 break;
783 sysadm 1.116 case KEY_SPACE:
784 sysadm 1.26 case KEY_PGDN:
785 sysadm 1.95 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
786 sysadm 1.26 {
787 sysadm 1.21 break;
788     }
789 sysadm 1.95 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
790 sysadm 1.91 if (line_current + screen_row_total > display_line_total) // No enough lines to display
791 sysadm 1.26 {
792 sysadm 1.91 line_current = display_line_total - screen_row_total;
793 sysadm 1.26 }
794 sysadm 1.95 output_current_row = screen_begin_row;
795     output_end_row = SCREEN_ROWS - 1;
796     clrline(output_current_row, SCREEN_ROWS);
797 sysadm 1.26 break;
798 sysadm 1.74 case KEY_ESC:
799 sysadm 1.26 case KEY_LEFT:
800 sysadm 1.27 loop = 0;
801 sysadm 1.26 break;
802     case 'h':
803 sysadm 1.81 if (!show_help) // Not reentrant
804 sysadm 1.37 {
805     break;
806     }
807 sysadm 1.26 // Display help information
808 sysadm 1.37 show_help = 0;
809 sysadm 1.89 display_file(help_filename, 1);
810 sysadm 1.37 show_help = 1;
811 sysadm 1.81 case KEY_F5:
812 sysadm 1.26 // Refresh after display help information
813 sysadm 1.95 line_current -= (output_current_row - screen_begin_row);
814     output_current_row = screen_begin_row;
815     output_end_row = SCREEN_ROWS - 1;
816     clrline(output_current_row, SCREEN_ROWS);
817 sysadm 1.89 break;
818 sysadm 1.81 case 0: // Refresh bottom line
819     break;
820 sysadm 1.26 default:
821     input_ok = 0;
822     break;
823 sysadm 1.21 }
824 sysadm 1.6 }
825 sysadm 1.21
826 sysadm 1.26 continue;
827     }
828 sysadm 1.21
829 sysadm 1.55 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
830 sysadm 1.89 if (len >= sizeof(buffer))
831 sysadm 1.26 {
832 sysadm 1.137 log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld ",
833 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
834 sysadm 1.89 len = sizeof(buffer) - 1;
835 sysadm 1.26 }
836 sysadm 1.87 else if (len < 0)
837     {
838 sysadm 1.137 log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld ",
839 sysadm 1.87 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
840     len = 0;
841     }
842 sysadm 1.52
843 sysadm 1.55 memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
844 sysadm 1.52 buffer[len] = '\0';
845    
846 sysadm 1.95 moveto(output_current_row, 0);
847 sysadm 1.26 clrtoeol();
848     prints("%s", buffer);
849 sysadm 1.54 line_current++;
850 sysadm 1.95 output_current_row++;
851 sysadm 1.26 }
852 sysadm 1.6
853 sysadm 1.41 cleanup:
854 sysadm 1.78 return ch;
855     }
856    
857 sysadm 1.126 int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
858 sysadm 1.81 {
859 sysadm 1.85 switch (*p_key)
860 sysadm 1.81 {
861     case 0: // Set msg
862 sysadm 1.85 snprintf(p_ctx->msg, sizeof(p_ctx->msg),
863 sysadm 1.104 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
864     "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
865     "帮助[\033[32mh\033[33m] |");
866 sysadm 1.81 break;
867     }
868    
869     return 0;
870     }
871    
872 sysadm 1.89 int display_file(const char *filename, int eof_exit)
873 sysadm 1.78 {
874 sysadm 1.81 int ret;
875 sysadm 1.130 void *p_shm;
876 sysadm 1.78 size_t data_len;
877     long line_total;
878     const void *p_data;
879     const long *p_line_offsets;
880    
881     if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
882     {
883 sysadm 1.137 log_error("get_file_shm(%s) error", filename);
884 sysadm 1.78 return KEY_NULL;
885     }
886    
887 sysadm 1.101 if (user_online_update("VIEW_FILE") < 0)
888     {
889 sysadm 1.137 log_error("user_online_update(VIEW_FILE) error");
890 sysadm 1.101 }
891    
892 sysadm 1.89 ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
893 sysadm 1.78
894 sysadm 1.69 if (detach_file_shm(p_shm) < 0)
895     {
896 sysadm 1.137 log_error("detach_file_shm(%s) error", filename);
897 sysadm 1.69 }
898    
899 sysadm 1.81 return ret;
900 sysadm 1.1 }
901 sysadm 1.9
902 sysadm 1.73 int show_top(const char *str_left, const char *str_middle, const char *str_right)
903 sysadm 1.9 {
904 sysadm 1.71 char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
905     char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
906     char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
907 sysadm 1.70 int str_left_len;
908 sysadm 1.71 int str_middle_len;
909 sysadm 1.70 int str_right_len;
910 sysadm 1.71 int eol;
911 sysadm 1.51 int len;
912 sysadm 1.40
913 sysadm 1.71 strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
914     str_left_f[sizeof(str_left_f) - 1] = '\0';
915 sysadm 1.105 len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
916 sysadm 1.71 str_left_f[len] = '\0';
917    
918     strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
919     str_middle_f[sizeof(str_middle_f) - 1] = '\0';
920 sysadm 1.105 len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
921 sysadm 1.71 str_middle_f[len] = '\0';
922    
923 sysadm 1.73 strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
924 sysadm 1.71 str_right_f[sizeof(str_right_f) - 1] = '\0';
925 sysadm 1.105 len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
926 sysadm 1.71 str_right_f[len] = '\0';
927 sysadm 1.9
928 sysadm 1.21 moveto(1, 0);
929 sysadm 1.26 clrtoeol();
930 sysadm 1.105 prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
931     str_left_f, 44 - str_left_len - str_middle_len, "",
932     str_middle_f, 36 - str_right_len, "", str_right_f);
933 sysadm 1.9
934 sysadm 1.21 return 0;
935 sysadm 1.9 }
936    
937 sysadm 1.57 int show_bottom(const char *msg)
938 sysadm 1.9 {
939 sysadm 1.26 char str_time[LINE_BUFFER_LEN];
940 sysadm 1.119 int len_str_time;
941 sysadm 1.21 time_t time_online;
942     struct tm *tm_online;
943 sysadm 1.77 char msg_f[LINE_BUFFER_LEN];
944 sysadm 1.72 int eol;
945 sysadm 1.119 int len_msg;
946 sysadm 1.58 int len;
947     int len_username;
948 sysadm 1.88 char str_tm_online[LINE_BUFFER_LEN];
949 sysadm 1.125 int len_str_tm_online;
950 sysadm 1.9
951 sysadm 1.119 len_str_time = (int)get_time_str(str_time, sizeof(str_time));
952 sysadm 1.9
953 sysadm 1.76 msg_f[0] = '\0';
954 sysadm 1.119 len_msg = 0;
955 sysadm 1.77 if (msg != NULL)
956 sysadm 1.76 {
957 sysadm 1.77 strncpy(msg_f, msg, sizeof(msg_f) - 1);
958 sysadm 1.76 msg_f[sizeof(msg_f) - 1] = '\0';
959 sysadm 1.119 len = split_line(msg_f, 23, &eol, &len_msg, 1);
960 sysadm 1.77 msg_f[len] = '\0';
961 sysadm 1.76 }
962 sysadm 1.58
963     len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
964    
965 sysadm 1.99 time_online = time(NULL) - BBS_login_tm;
966 sysadm 1.21 tm_online = gmtime(&time_online);
967 sysadm 1.118 if (tm_online->tm_mday > 1)
968 sysadm 1.88 {
969     snprintf(str_tm_online, sizeof(str_tm_online),
970 sysadm 1.119 "\033[36m%d\033[33md \033[36m%d\033[33m:\033[36m%.2d",
971     tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min);
972 sysadm 1.88 }
973     else
974     {
975     snprintf(str_tm_online, sizeof(str_tm_online),
976 sysadm 1.119 "\033[36m%d\033[33m:\033[36m%.2d",
977 sysadm 1.89 tm_online->tm_hour, tm_online->tm_min);
978 sysadm 1.88 }
979 sysadm 1.125 len_str_tm_online = str_length(str_tm_online, 1);
980 sysadm 1.9
981 sysadm 1.53 moveto(SCREEN_ROWS, 0);
982 sysadm 1.26 clrtoeol();
983 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",
984 sysadm 1.127 str_time, msg_f, 65 - len_str_time - len_msg - len_username - len_str_tm_online,
985     "", BBS_username, str_tm_online);
986 sysadm 1.9
987 sysadm 1.21 return 0;
988 sysadm 1.9 }
989    
990 sysadm 1.21 int show_active_board()
991 sysadm 1.9 {
992 sysadm 1.59 static int line_current = 0;
993 sysadm 1.61 static const void *p_shm = NULL;
994 sysadm 1.59 static size_t data_len;
995     static long line_total;
996 sysadm 1.61 static const void *p_data;
997 sysadm 1.59 static const long *p_line_offsets;
998    
999 sysadm 1.65 static time_t t_last_show = 0;
1000     static int line_last = 0;
1001    
1002 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
1003 sysadm 1.59 long int len;
1004 sysadm 1.9
1005 sysadm 1.61 if (p_shm == NULL)
1006 sysadm 1.26 {
1007 sysadm 1.69 if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
1008 sysadm 1.9 {
1009 sysadm 1.137 log_error("get_file_shm(%s) error", DATA_ACTIVE_BOARD);
1010 sysadm 1.59 return KEY_NULL;
1011 sysadm 1.9 }
1012 sysadm 1.26 }
1013 sysadm 1.21
1014 sysadm 1.99 if (time(NULL) - t_last_show >= 10)
1015 sysadm 1.65 {
1016     line_last = line_current;
1017 sysadm 1.99 t_last_show = time(NULL);
1018 sysadm 1.65 }
1019     else
1020     {
1021     line_current = line_last;
1022     }
1023    
1024 sysadm 1.64 clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
1025 sysadm 1.59
1026 sysadm 1.26 for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
1027     {
1028 sysadm 1.59 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
1029     if (len >= LINE_BUFFER_LEN)
1030 sysadm 1.9 {
1031 sysadm 1.137 log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld ",
1032 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
1033 sysadm 1.59 len = LINE_BUFFER_LEN - 1;
1034 sysadm 1.9 }
1035 sysadm 1.59
1036     memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
1037     buffer[len] = '\0';
1038    
1039 sysadm 1.26 moveto(3 + i, 0);
1040     prints("%s", buffer);
1041 sysadm 1.59
1042     line_current++;
1043 sysadm 1.60 if (line_current >= line_total)
1044 sysadm 1.59 {
1045     line_current = 0;
1046     break;
1047     }
1048 sysadm 1.9 }
1049 sysadm 1.26
1050 sysadm 1.21 return 0;
1051 sysadm 1.9 }
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