/[LeafOK_CVS]/lbbs/src/article_cache.c
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Revision 1.18 by sysadm, Mon Jun 16 14:30:44 2025 UTC Revision 1.38 by sysadm, Sat Nov 29 02:07:27 2025 UTC
# Line 1  Line 1 
1  /***************************************************************************  /* SPDX-License-Identifier: GPL-3.0-or-later */
2                                             article_cache.c  -  description  /*
3                                                           -------------------   * article_cache
4          Copyright            : (C) 2004-2025 by Leaflet   *   - convert article content from DB to local cache with LML conversion and line offset index
5          Email                : leaflet@leafok.com   *
6   ***************************************************************************/   * Copyright (C) 2004-2025  Leaflet <leaflet@leafok.com>
7     */
8  /***************************************************************************  
9   *                                                                         *  #ifdef HAVE_CONFIG_H
10   *   This program is free software; you can redistribute it and/or modify  *  #include "config.h"
11   *   it under the terms of the GNU General Public License as published by  *  #endif
  *   the Free Software Foundation; either version 3 of the License, or     *  
  *   (at your option) any later version.                                   *  
  *                                                                         *  
  ***************************************************************************/  
   
 #define _POSIX_C_SOURCE 200809L  
12    
13  #include "article_cache.h"  #include "article_cache.h"
 #include "log.h"  
14  #include "lml.h"  #include "lml.h"
15    #include "log.h"
16  #include <errno.h>  #include <errno.h>
 #include <stdio.h>  
17  #include <fcntl.h>  #include <fcntl.h>
18    #include <stdio.h>
19  #include <stdlib.h>  #include <stdlib.h>
20    #include <string.h>
21    #include <time.h>
22  #include <unistd.h>  #include <unistd.h>
23  #include <sys/mman.h>  #include <sys/mman.h>
24  #include <sys/stat.h>  #include <sys/stat.h>
 #include <string.h>  
 #include <time.h>  
25    
26  #define ARTICLE_HEADER_MAX_LEN 4096  enum _article_cache_constant_t
27  #define ARTICLE_CONTENT_MAX_LEN 1024 * 1024 * 4 // 4MB  {
28  #define ARTICLE_FOOTER_MAX_LEN 4096          ARTICLE_HEADER_MAX_LEN = 4096,
29  #define SUB_DT_MAX_LEN 50          ARTICLE_FOOTER_MAX_LEN = 4096,
30            SUB_DT_MAX_LEN = 50,
31    };
32    
33  static const char *BBS_article_footer_color[] = {  static const char *BBS_article_footer_color[] = {
34          "\033[31m",          "\033[31m",
# Line 45  static const char *BBS_article_footer_co Line 41  static const char *BBS_article_footer_co
41  };  };
42  static const int BBS_article_footer_color_count = 7;  static const int BBS_article_footer_color_count = 7;
43    
44    static char *content_f; // static buffer in large size
45    
46  inline static int article_cache_path(char *file_path, size_t buf_len, const char *cache_dir, const ARTICLE *p_article)  inline static int article_cache_path(char *file_path, size_t buf_len, const char *cache_dir, const ARTICLE *p_article)
47  {  {
48          if (file_path == NULL || cache_dir == NULL || p_article == NULL)          if (file_path == NULL || cache_dir == NULL || p_article == NULL)
49          {          {
50                  log_error("article_cache_path() NULL pointer error\n");                  log_error("NULL pointer error\n");
51                  return -1;                  return -1;
52          }          }
53    
# Line 61  inline static int article_cache_path(cha Line 59  inline static int article_cache_path(cha
59  int article_cache_generate(const char *cache_dir, const ARTICLE *p_article, const SECTION_LIST *p_section,  int article_cache_generate(const char *cache_dir, const ARTICLE *p_article, const SECTION_LIST *p_section,
60                                                     const char *content, const char *sub_ip, int overwrite)                                                     const char *content, const char *sub_ip, int overwrite)
61  {  {
         static char *content_f; // static buffer in large size  
   
62          char data_file[FILE_PATH_LEN];          char data_file[FILE_PATH_LEN];
63          int fd;          int fd;
64          ARTICLE_CACHE cache;          ARTICLE_CACHE cache;
# Line 71  int article_cache_generate(const char *c Line 67  int article_cache_generate(const char *c
67          char header[ARTICLE_HEADER_MAX_LEN];          char header[ARTICLE_HEADER_MAX_LEN];
68          size_t header_len;          size_t header_len;
69          long header_line_cnt;          long header_line_cnt;
70            size_t body_len;
71            long body_line_cnt;
72          char footer[ARTICLE_FOOTER_MAX_LEN];          char footer[ARTICLE_FOOTER_MAX_LEN];
73          size_t footer_len;          size_t footer_len;
74          long footer_line_cnt;          long footer_line_cnt;
# Line 78  int article_cache_generate(const char *c Line 76  int article_cache_generate(const char *c
76    
77          if (cache_dir == NULL || p_article == NULL || content == NULL)          if (cache_dir == NULL || p_article == NULL || content == NULL)
78          {          {
79                  log_error("article_cache_generate() NULL pointer error\n");                  log_error("NULL pointer error\n");
80                  return -1;                  return -1;
81          }          }
82    
# Line 113  int article_cache_generate(const char *c Line 111  int article_cache_generate(const char *c
111    
112          // Generate article header / footer          // Generate article header / footer
113          localtime_r(&(p_article->sub_dt), &tm_sub_dt);          localtime_r(&(p_article->sub_dt), &tm_sub_dt);
114          strftime(str_sub_dt, sizeof(str_sub_dt), "%c", &tm_sub_dt);          strftime(str_sub_dt, sizeof(str_sub_dt), "%c %Z", &tm_sub_dt);
115    
116          snprintf(header, sizeof(header), "发布者: %s (%s), 版块: %s (%s)\n标  题: %s\n发布于: %s (%s)\n\n",          snprintf(header, sizeof(header), "鍙戝竷鑰: %s (%s), 鐗堝潡: %s (%s)\n鏍  棰: %s\n鍙戝竷浜: %s (%s)\n\n",
117                           p_article->username, p_article->nickname, p_section->sname, p_section->stitle, p_article->title, BBS_name, str_sub_dt);                           p_article->username, p_article->nickname, p_section->sname, p_section->stitle, p_article->title, BBS_name, str_sub_dt);
118    
119          snprintf(footer, sizeof(footer),          snprintf(footer, sizeof(footer),
120                           "\n--\n%s※ 来源: %s http://%s [FROM: %s]\033[m\n\n",                           "\n--\n%s鈥 鏉ユ簮: %s https://%s [FROM: %s]\033[m\n\n",
121                           BBS_article_footer_color[p_article->aid % BBS_article_footer_color_count],                           BBS_article_footer_color[p_article->aid % BBS_article_footer_color_count],
122                           BBS_name, BBS_server, sub_ip);                           BBS_name, BBS_server, sub_ip);
123    
124          header_len = strnlen(header, sizeof(header));          header_len = strnlen(header, sizeof(header));
125          footer_len = strnlen(footer, sizeof(footer));          footer_len = strnlen(footer, sizeof(footer));
126    
127          header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES, 1);          header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets,
128                                                                               MAX_SPLIT_FILE_LINES, 1, NULL);
129    
130          if (header_len != cache.line_offsets[header_line_cnt])          if (header_len != cache.line_offsets[header_line_cnt])
131          {          {
132                  log_common("Header of article(aid=%d) is truncated from %ld to %ld\n", p_article->aid, header_len, cache.line_offsets[header_line_cnt]);  #ifdef _DEBUG
133                    log_error("Header of article(aid=%d) is truncated from %ld to %ld\n, body_line=%ld, body_line_limit=%ld",
134                                      p_article->aid, header_len, cache.line_offsets[header_line_cnt],
135                                      header_line_cnt, MAX_SPLIT_FILE_LINES);
136    #endif
137                  header_len = (size_t)cache.line_offsets[header_line_cnt];                  header_len = (size_t)cache.line_offsets[header_line_cnt];
138          }          }
139    
140          // Apply LML render to content body          // Apply LML render to content body
141          cache.data_len = header_len + (size_t)lml_plain(content, content_f, ARTICLE_CONTENT_MAX_LEN);          body_len = (size_t)lml_render(content, content_f, ARTICLE_CONTENT_MAX_LEN, SCREEN_COLS, 0);
142            cache.data_len = header_len + body_len;
143    
144          cache.line_total = header_line_cnt +          body_line_cnt = split_data_lines(content_f, SCREEN_COLS + 1, &(cache.line_offsets[header_line_cnt]),
145                                             split_data_lines(content_f, SCREEN_COLS, cache.line_offsets + header_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt, 1);                                                                           MAX_SPLIT_FILE_LINES - header_line_cnt, 1, NULL);
146            cache.line_total = header_line_cnt + body_line_cnt;
147          if (cache.data_len - header_len != (size_t)cache.line_offsets[cache.line_total])  
148          {          if (body_len != (size_t)cache.line_offsets[cache.line_total])
149                  log_common("Body of article(aid=%d) is truncated from %ld to %ld\n",          {
150                                  p_article->aid, cache.data_len - header_len, cache.line_offsets[cache.line_total]);  #ifdef _DEBUG
151                    log_error("Body of article(aid=%d) is truncated from %ld to %ld, body_line=%ld, body_line_limit=%ld\n",
152                                      p_article->aid, body_len, cache.line_offsets[cache.line_total],
153                                      body_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt);
154    #endif
155                  cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]);                  cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]);
156          }          }
157    
# Line 152  int article_cache_generate(const char *c Line 160  int article_cache_generate(const char *c
160                  cache.line_offsets[i] += (long)header_len;                  cache.line_offsets[i] += (long)header_len;
161          }          }
162    
163          footer_line_cnt = split_data_lines(footer, SCREEN_COLS, cache.line_offsets + cache.line_total, MAX_SPLIT_FILE_LINES - cache.line_total, 1);          footer_line_cnt = split_data_lines(footer, SCREEN_COLS, &(cache.line_offsets[cache.line_total]),
164                                                                               MAX_SPLIT_FILE_LINES - cache.line_total, 1, NULL);
165    
166          if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt])          if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt])
167          {          {
168                  log_common("Footer of article(aid=%d) is truncated from %ld to %ld\n",  #ifdef _DEBUG
169                                  p_article->aid, footer_len, cache.line_offsets[cache.line_total + footer_line_cnt]);                  log_error("Footer of article(aid=%d) is truncated from %ld to %ld, footer_line=%ld, footer_line_limit=%ld\n",
170                                      p_article->aid, footer_len, cache.line_offsets[cache.line_total + footer_line_cnt],
171                                      footer_line_cnt, MAX_SPLIT_FILE_LINES - cache.line_total);
172    #endif
173                  footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]);                  footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]);
174          }          }
175    
# Line 204  int article_cache_generate(const char *c Line 216  int article_cache_generate(const char *c
216          return 0;          return 0;
217  }  }
218    
219    void article_cache_cleanup(void)
220    {
221            if (content_f)
222            {
223                    free(content_f);
224                    content_f = NULL;
225            }
226    }
227    
228  int article_cache_load(ARTICLE_CACHE *p_cache, const char *cache_dir, const ARTICLE *p_article)  int article_cache_load(ARTICLE_CACHE *p_cache, const char *cache_dir, const ARTICLE *p_article)
229  {  {
230          char data_file[FILE_PATH_LEN];          char data_file[FILE_PATH_LEN];
# Line 214  int article_cache_load(ARTICLE_CACHE *p_ Line 235  int article_cache_load(ARTICLE_CACHE *p_
235    
236          if (p_cache == NULL || cache_dir == NULL || p_article == NULL)          if (p_cache == NULL || cache_dir == NULL || p_article == NULL)
237          {          {
238                  log_error("article_cache_load() NULL pointer error\n");                  log_error("NULL pointer error\n");
239                  return -1;                  return -1;
240          }          }
241    
# Line 261  int article_cache_load(ARTICLE_CACHE *p_ Line 282  int article_cache_load(ARTICLE_CACHE *p_
282          memcpy((void *)p_cache, p_mmap, (size_t)(((ARTICLE_CACHE *)p_mmap)->mmap_len - ((ARTICLE_CACHE *)p_mmap)->data_len));          memcpy((void *)p_cache, p_mmap, (size_t)(((ARTICLE_CACHE *)p_mmap)->mmap_len - ((ARTICLE_CACHE *)p_mmap)->data_len));
283    
284          p_cache->p_mmap = p_mmap;          p_cache->p_mmap = p_mmap;
285          p_cache->p_data = p_mmap + (p_cache->mmap_len - p_cache->data_len);          p_cache->p_data = (char *)p_mmap + (p_cache->mmap_len - p_cache->data_len);
286    
287          return 0;          return 0;
288  }  }
# Line 270  int article_cache_unload(ARTICLE_CACHE * Line 291  int article_cache_unload(ARTICLE_CACHE *
291  {  {
292          if (p_cache == NULL || p_cache->p_mmap == NULL)          if (p_cache == NULL || p_cache->p_mmap == NULL)
293          {          {
294                  log_error("article_cache_unload() NULL pointer error\n");                  log_error("NULL pointer error\n");
295                  return -1;                  return -1;
296          }          }
297    

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