/[LeafOK_CVS]/lbbs/src/article_cache.c
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Revision 1.5 by sysadm, Sat May 31 12:00:00 2025 UTC Revision 1.15 by sysadm, Wed Jun 11 12:31:51 2025 UTC
# Line 16  Line 16 
16    
17  #include "article_cache.h"  #include "article_cache.h"
18  #include "log.h"  #include "log.h"
19    #include "lml.h"
20  #include <errno.h>  #include <errno.h>
21  #include <stdio.h>  #include <stdio.h>
22  #include <fcntl.h>  #include <fcntl.h>
# Line 28  Line 29 
29  #include <string.h>  #include <string.h>
30    
31  #define ARTICLE_HEADER_MAX_LEN 4096  #define ARTICLE_HEADER_MAX_LEN 4096
32    #define ARTICLE_CONTENT_MAX_LEN 1024 * 1024 * 4 // 4MB
33  #define ARTICLE_FOOTER_MAX_LEN 4096  #define ARTICLE_FOOTER_MAX_LEN 4096
34  #define SUB_DT_MAX_LEN 50  #define SUB_DT_MAX_LEN 50
35    
36    static const char *BBS_article_footer_color[] = {
37            "\033[31m",
38            "\033[32m",
39            "\033[33m",
40            "\033[34m",
41            "\033[35m",
42            "\033[36m",
43            "\033[37m",
44    };
45    static const int BBS_article_footer_color_count = 7;
46    
47  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)
48  {  {
49          if (file_path == NULL || cache_dir == NULL || p_article == NULL)          if (file_path == NULL || cache_dir == NULL || p_article == NULL)
# Line 55  int article_cache_generate(const char *c Line 68  int article_cache_generate(const char *c
68          char header[ARTICLE_HEADER_MAX_LEN];          char header[ARTICLE_HEADER_MAX_LEN];
69          size_t header_len;          size_t header_len;
70          long header_line_cnt;          long header_line_cnt;
71            char content_f[ARTICLE_CONTENT_MAX_LEN];
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 97  int article_cache_generate(const char *c Line 111  int article_cache_generate(const char *c
111                           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);
112    
113          snprintf(footer, sizeof(footer),          snprintf(footer, sizeof(footer),
114                           "--\n¡ù À´Ô´: %s https://%s [FROM: %s]\n",                           "\n--\n%s¡ù À´Ô´: %s http://%s [FROM: %s]\033[m\n\n",
115                             BBS_article_footer_color[p_article->aid % BBS_article_footer_color_count],
116                           BBS_name, BBS_server, sub_ip);                           BBS_name, BBS_server, sub_ip);
117    
118          header_len = strnlen(header, sizeof(header));          header_len = strnlen(header, sizeof(header));
119          footer_len = strnlen(footer, sizeof(footer));          footer_len = strnlen(footer, sizeof(footer));
120    
         cache.data_len = header_len + strlen(content);  
   
121          header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES);          header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES);
122    
123            if (header_len != cache.line_offsets[header_line_cnt])
124            {
125                    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]);
126                    header_len = (size_t)cache.line_offsets[header_line_cnt];
127            }
128    
129            // Apply LML render to content body
130            cache.data_len = header_len + (size_t)lml_plain(content, content_f, ARTICLE_CONTENT_MAX_LEN);
131    
132          cache.line_total = header_line_cnt +          cache.line_total = header_line_cnt +
133                                             split_data_lines(content, SCREEN_COLS, cache.line_offsets + header_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt);                                             split_data_lines(content_f, SCREEN_COLS, cache.line_offsets + header_line_cnt, MAX_SPLIT_FILE_LINES - header_line_cnt);
134          if (cache.line_total >= MAX_SPLIT_FILE_LINES)  
135            if (cache.data_len - header_len != (size_t)cache.line_offsets[cache.line_total])
136          {          {
137                  log_error("split_data_lines(%s) truncated over limit lines %d >= %d\n", data_file, cache.line_total, MAX_SPLIT_FILE_LINES);                  log_common("Body of article(aid=%d) is truncated from %ld to %ld\n",
138                  return -3;                                  p_article->aid, cache.data_len - header_len, cache.line_offsets[cache.line_total]);
139                    cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]);
140          }          }
141    
142          for (i = header_line_cnt; i <= cache.line_total; i++)          for (i = header_line_cnt; i <= cache.line_total; i++)
# Line 120  int article_cache_generate(const char *c Line 145  int article_cache_generate(const char *c
145          }          }
146    
147          footer_line_cnt = split_data_lines(footer, SCREEN_COLS, cache.line_offsets + cache.line_total, MAX_SPLIT_FILE_LINES - cache.line_total);          footer_line_cnt = split_data_lines(footer, SCREEN_COLS, cache.line_offsets + cache.line_total, MAX_SPLIT_FILE_LINES - cache.line_total);
148          if (cache.line_total + footer_line_cnt >= MAX_SPLIT_FILE_LINES)  
149            if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt])
150          {          {
151                  log_error("split_data_lines(%s) truncated over limit lines %d >= %d\n", data_file, cache.line_total + footer_line_cnt, MAX_SPLIT_FILE_LINES);                  log_common("Footer of article(aid=%d) is truncated from %ld to %ld\n",
152                  return -3;                                  p_article->aid, footer_len, cache.line_offsets[cache.line_total + footer_line_cnt]);
153                    footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]);
154          }          }
155    
156          for (i = 0; i <= footer_line_cnt; i++)          for (i = 0; i <= footer_line_cnt; i++)
# Line 133  int article_cache_generate(const char *c Line 160  int article_cache_generate(const char *c
160    
161          cache.data_len += footer_len;          cache.data_len += footer_len;
162          cache.line_total += footer_line_cnt;          cache.line_total += footer_line_cnt;
163            cache.mmap_len = sizeof(cache) - sizeof(long) * (MAX_SPLIT_FILE_LINES - (size_t)(cache.line_total) - 1) + cache.data_len;
164    
165          if (write(fd, &cache, sizeof(cache)) == -1)          if (write(fd, &cache, cache.mmap_len - cache.data_len) == -1)
166          {          {
167                  log_error("write(%s, cache) error (%d)\n", data_file, errno);                  log_error("write(%s, cache) error (%d)\n", data_file, errno);
168                  close(fd);                  close(fd);
# Line 146  int article_cache_generate(const char *c Line 174  int article_cache_generate(const char *c
174                  close(fd);                  close(fd);
175                  return -3;                  return -3;
176          }          }
177          if (write(fd, content, cache.data_len - header_len - footer_len) == -1)          if (write(fd, content_f, cache.data_len - header_len - footer_len) == -1)
178          {          {
179                  log_error("write(%s, content) error (%d)\n", data_file, errno);                  log_error("write(%s, content) error (%d)\n", data_file, errno);
180                  close(fd);                  close(fd);
# Line 215  int article_cache_load(ARTICLE_CACHE *p_ Line 243  int article_cache_load(ARTICLE_CACHE *p_
243                  return -2;                  return -2;
244          }          }
245    
246          memcpy((void *)p_cache, p_mmap, sizeof(ARTICLE_CACHE));          if (((ARTICLE_CACHE *)p_mmap)->mmap_len != mmap_len)
   
         if (sizeof(ARTICLE_CACHE) + p_cache->data_len != mmap_len)  
247          {          {
248                  log_error("Inconsistent length, cache_len(%ld) + data_len(%ld) != mmap_len(%ld)\n",                  log_error("Inconsistent mmap len of article (cid=%d), %ld != %ld\n", p_article->cid, p_cache->mmap_len, mmap_len);
                                   sizeof(ARTICLE_CACHE), p_cache->data_len, mmap_len);  
   
                 if (munmap(p_mmap, mmap_len) < 0)  
                 {  
                         log_error("munmap() error (%d)\n", errno);  
                 }  
   
249                  return -3;                  return -3;
250          }          }
251    
252            bzero(p_cache, sizeof(*p_cache));
253            memcpy((void *)p_cache, p_mmap, (size_t)(((ARTICLE_CACHE *)p_mmap)->mmap_len - ((ARTICLE_CACHE *)p_mmap)->data_len));
254    
255          p_cache->p_mmap = p_mmap;          p_cache->p_mmap = p_mmap;
256          p_cache->p_data = p_mmap + sizeof(ARTICLE_CACHE);          p_cache->p_data = p_mmap + (p_cache->mmap_len - p_cache->data_len);
257    
258          return 0;          return 0;
259  }  }
# Line 244  int article_cache_unload(ARTICLE_CACHE * Line 266  int article_cache_unload(ARTICLE_CACHE *
266                  return -1;                  return -1;
267          }          }
268    
269          if (munmap(p_cache->p_mmap, sizeof(ARTICLE_CACHE) + p_cache->data_len) < 0)          if (munmap(p_cache->p_mmap, p_cache->mmap_len) < 0)
270          {          {
271                  log_error("munmap() error (%d)\n", errno);                  log_error("munmap() error (%d)\n", errno);
272                  return -2;                  return -2;

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