/[LeafOK_CVS]/lbbs/src/article_cache.c
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Revision 1.9 by sysadm, Sun Jun 1 14:33:50 2025 UTC Revision 1.20 by sysadm, Tue Jun 17 13:29:58 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 23  Line 24 
24  #include <unistd.h>  #include <unistd.h>
25  #include <sys/mman.h>  #include <sys/mman.h>
26  #include <sys/stat.h>  #include <sys/stat.h>
 #include <strings.h>  
 #define _POSIX_C_SOURCE 200809L  
27  #include <string.h>  #include <string.h>
28    #include <time.h>
29    
30  #define ARTICLE_HEADER_MAX_LEN 4096  #define ARTICLE_HEADER_MAX_LEN 4096
31    #define ARTICLE_CONTENT_MAX_LEN 1024 * 1024 * 4 // 4MB
32  #define ARTICLE_FOOTER_MAX_LEN 4096  #define ARTICLE_FOOTER_MAX_LEN 4096
33  #define SUB_DT_MAX_LEN 50  #define SUB_DT_MAX_LEN 50
34    
# Line 58  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  {  {
62            static char *content_f; // static buffer in large size
63    
64          char data_file[FILE_PATH_LEN];          char data_file[FILE_PATH_LEN];
65          int fd;          int fd;
66          ARTICLE_CACHE cache;          ARTICLE_CACHE cache;
# Line 77  int article_cache_generate(const char *c Line 80  int article_cache_generate(const char *c
80                  return -1;                  return -1;
81          }          }
82    
83            if (content_f == NULL && (content_f = malloc(ARTICLE_CONTENT_MAX_LEN)) == NULL)
84            {
85                    log_error("malloc(content_f) error: OOM\n");
86                    return -1;
87            }
88    
89          if (article_cache_path(data_file, sizeof(data_file), cache_dir, p_article) < 0)          if (article_cache_path(data_file, sizeof(data_file), cache_dir, p_article) < 0)
90          {          {
91                  log_error("article_cache_path(dir=%s, cid=%d) error\n", cache_dir, p_article->cid);                  log_error("article_cache_path(dir=%s, cid=%d) error\n", cache_dir, p_article->cid);
# Line 98  int article_cache_generate(const char *c Line 107  int article_cache_generate(const char *c
107                  return -2;                  return -2;
108          }          }
109    
110          bzero(&cache, sizeof(cache));          memset(&cache, 0, sizeof(cache));
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);
# Line 108  int article_cache_generate(const char *c Line 117  int article_cache_generate(const char *c
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%s¡ù À´Ô´: %s http://%s [FROM: %s]\033[m\n",                           "\n--\n%s¡ù À´Ô´: %s http://%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          cache.data_len = header_len + strlen(content);          header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES, 1);
128    
129            if (header_len != cache.line_offsets[header_line_cnt])
130            {
131    #ifdef _DEBUG
132                    log_error("Header of article(aid=%d) is truncated from %ld to %ld\n", p_article->aid, header_len, cache.line_offsets[header_line_cnt]);
133    #endif
134                    header_len = (size_t)cache.line_offsets[header_line_cnt];
135            }
136    
137            // Apply LML render to content body
138            cache.data_len = header_len + (size_t)lml_plain(content, content_f, ARTICLE_CONTENT_MAX_LEN);
139    
         header_line_cnt = split_data_lines(header, SCREEN_COLS, cache.line_offsets, MAX_SPLIT_FILE_LINES);  
140          cache.line_total = header_line_cnt +          cache.line_total = header_line_cnt +
141                                             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, 1);
142    
143            if (cache.data_len - header_len != (size_t)cache.line_offsets[cache.line_total])
144            {
145    #ifdef _DEBUG
146                    log_error("Body of article(aid=%d) is truncated from %ld to %ld\n",
147                                      p_article->aid, cache.data_len - header_len, cache.line_offsets[cache.line_total]);
148    #endif
149                    cache.data_len = header_len + (size_t)(cache.line_offsets[cache.line_total]);
150            }
151    
152          for (i = header_line_cnt; i <= cache.line_total; i++)          for (i = header_line_cnt; i <= cache.line_total; i++)
153          {          {
154                  cache.line_offsets[i] += (long)header_len;                  cache.line_offsets[i] += (long)header_len;
155          }          }
156    
157          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, 1);
158    
159            if (footer_len != cache.line_offsets[cache.line_total + footer_line_cnt])
160            {
161    #ifdef _DEBUG
162                    log_error("Footer of article(aid=%d) is truncated from %ld to %ld\n",
163                                      p_article->aid, footer_len, cache.line_offsets[cache.line_total + footer_line_cnt]);
164    #endif
165                    footer_len = (size_t)(cache.line_offsets[cache.line_total + footer_line_cnt]);
166            }
167    
168          for (i = 0; i <= footer_line_cnt; i++)          for (i = 0; i <= footer_line_cnt; i++)
169          {          {
# Line 149  int article_cache_generate(const char *c Line 186  int article_cache_generate(const char *c
186                  close(fd);                  close(fd);
187                  return -3;                  return -3;
188          }          }
189          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)
190          {          {
191                  log_error("write(%s, content) error (%d)\n", data_file, errno);                  log_error("write(%s, content) error (%d)\n", data_file, errno);
192                  close(fd);                  close(fd);
# Line 224  int article_cache_load(ARTICLE_CACHE *p_ Line 261  int article_cache_load(ARTICLE_CACHE *p_
261                  return -3;                  return -3;
262          }          }
263    
264          bzero(p_cache, sizeof(*p_cache));          memset(p_cache, 0, sizeof(*p_cache));
265          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));
266    
267          p_cache->p_mmap = p_mmap;          p_cache->p_mmap = p_mmap;

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