/[LeafOK_CVS]/lbbs/src/section_list_loader.c
ViewVC logotype

Annotation of /lbbs/src/section_list_loader.c

Parent Directory Parent Directory | Revision Log Revision Log

Revision 1.32 - (hide annotations)
Mon Jun 23 08:38:01 2025 UTC (8 months, 3 weeks ago) by sysadm
Branch: MAIN
Changes since 1.31: +42 -19 lines
Content type: text/x-csrc 
Display articles with ontop state at the end of section list
1 sysadm 1.1 /***************************************************************************
2     section_list_loader.c - description
3     -------------------
4     Copyright : (C) 2004-2025 by Leaflet
5     Email : leaflet@leafok.com
6     ***************************************************************************/
7    
8     /***************************************************************************
9     * *
10     * This program is free software; you can redistribute it and/or modify *
11     * it under the terms of the GNU General Public License as published by *
12     * the Free Software Foundation; either version 3 of the License, or *
13     * (at your option) any later version. *
14     * *
15     ***************************************************************************/
16    
17 sysadm 1.11 #include "article_cache.h"
18 sysadm 1.19 #include "bbs.h"
19 sysadm 1.30 #include "database.h"
20 sysadm 1.1 #include "log.h"
21 sysadm 1.4 #include "menu.h"
22 sysadm 1.30 #include "section_list_loader.h"
23 sysadm 1.1 #include <errno.h>
24 sysadm 1.4 #include <signal.h>
25 sysadm 1.29 #include <stdio.h>
26 sysadm 1.1 #include <stdlib.h>
27 sysadm 1.22 #include <string.h>
28 sysadm 1.4 #include <unistd.h>
29    
30 sysadm 1.5 int section_list_loader_pid;
31     int last_article_op_log_mid;
32 sysadm 1.1
33 sysadm 1.2 int load_section_config_from_db(void)
34 sysadm 1.1 {
35 sysadm 1.23 MYSQL *db = NULL;
36     MYSQL_RES *rs = NULL, *rs2 = NULL;
37 sysadm 1.1 MYSQL_ROW row, row2;
38     char sql[SQL_BUFFER_LEN];
39     int32_t sid;
40 sysadm 1.8 char master_list[(BBS_username_max_len + 1) * 3 + 1];
41 sysadm 1.1 SECTION_LIST *p_section;
42 sysadm 1.23 int ret = 0;
43 sysadm 1.1
44 sysadm 1.2 db = db_open();
45     if (db == NULL)
46     {
47     log_error("db_open() error: %s\n", mysql_error(db));
48 sysadm 1.23 ret = -1;
49     goto cleanup;
50 sysadm 1.2 }
51    
52 sysadm 1.1 snprintf(sql, sizeof(sql),
53 sysadm 1.2 "SELECT section_config.SID, sname, section_config.title, section_config.CID, "
54     "read_user_level, write_user_level, section_config.enable * section_class.enable AS enable "
55     "FROM section_config INNER JOIN section_class ON section_config.CID = section_class.CID "
56 sysadm 1.1 "ORDER BY section_config.SID");
57    
58     if (mysql_query(db, sql) != 0)
59     {
60     log_error("Query section_list error: %s\n", mysql_error(db));
61 sysadm 1.23 ret = -2;
62     goto cleanup;
63 sysadm 1.1 }
64     if ((rs = mysql_store_result(db)) == NULL)
65     {
66     log_error("Get section_list data failed\n");
67 sysadm 1.23 ret = -2;
68     goto cleanup;
69 sysadm 1.1 }
70 sysadm 1.2
71     ret = 0;
72 sysadm 1.1 while ((row = mysql_fetch_row(rs)))
73     {
74     sid = atoi(row[0]);
75    
76     // Query section master
77     snprintf(sql, sizeof(sql),
78     "SELECT username FROM section_master "
79     "INNER JOIN user_list ON section_master.UID = user_list.UID "
80     "WHERE SID = %d AND section_master.enable AND (NOW() BETWEEN begin_dt AND end_dt) "
81 sysadm 1.8 "ORDER BY major DESC, begin_dt ASC LIMIT 3",
82 sysadm 1.1 sid);
83    
84     if (mysql_query(db, sql) != 0)
85     {
86     log_error("Query section_master error: %s\n", mysql_error(db));
87 sysadm 1.2 ret = -3;
88     break;
89 sysadm 1.1 }
90     if ((rs2 = mysql_store_result(db)) == NULL)
91     {
92     log_error("Get section_master data failed\n");
93 sysadm 1.2 ret = -3;
94     break;
95 sysadm 1.1 }
96 sysadm 1.8
97     master_list[0] = '\0';
98     while ((row2 = mysql_fetch_row(rs2)))
99 sysadm 1.1 {
100 sysadm 1.8 strncat(master_list, row2[0], sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
101     strncat(master_list, " ", sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
102 sysadm 1.1 }
103     mysql_free_result(rs2);
104 sysadm 1.23 rs2 = NULL;
105 sysadm 1.1
106     p_section = section_list_find_by_sid(sid);
107    
108     if (p_section == NULL)
109     {
110 sysadm 1.8 p_section = section_list_create(sid, row[1], row[2], master_list);
111 sysadm 1.1 if (p_section == NULL)
112     {
113 sysadm 1.2 log_error("section_list_create() error: load new section sid = %d sname = %s\n", sid, row[1]);
114     ret = -4;
115 sysadm 1.1 break;
116     }
117    
118     // acquire rw lock
119     ret = section_list_rw_lock(p_section);
120     if (ret < 0)
121     {
122     break;
123     }
124     }
125     else
126     {
127     // acquire rw lock
128     ret = section_list_rw_lock(p_section);
129     if (ret < 0)
130     {
131     break;
132     }
133    
134 sysadm 1.28 strncpy(p_section->sname, row[0], sizeof(p_section->sname) - 1);
135 sysadm 1.1 p_section->sname[sizeof(p_section->sname) - 1] = '\0';
136     strncpy(p_section->stitle, row[1], sizeof(p_section->stitle) - 1);
137     p_section->stitle[sizeof(p_section->stitle) - 1] = '\0';
138 sysadm 1.8 strncpy(p_section->master_list, master_list, sizeof(p_section->master_list) - 1);
139     p_section->master_list[sizeof(p_section->master_list) - 1] = '\0';
140 sysadm 1.1 }
141    
142     p_section->class_id = atoi(row[3]);
143     p_section->read_user_level = atoi(row[4]);
144     p_section->write_user_level = atoi(row[5]);
145     p_section->enable = (int8_t)atoi(row[6]);
146    
147     // release rw lock
148     ret = section_list_rw_unlock(p_section);
149     if (ret < 0)
150     {
151     break;
152     }
153     }
154 sysadm 1.23
155     cleanup:
156 sysadm 1.31 mysql_free_result(rs2);
157 sysadm 1.1 mysql_free_result(rs);
158 sysadm 1.2 mysql_close(db);
159    
160     return ret;
161 sysadm 1.1 }
162 sysadm 1.3
163 sysadm 1.9 int append_articles_from_db(int32_t start_aid, int global_lock, int article_count_limit)
164 sysadm 1.3 {
165 sysadm 1.23 MYSQL *db = NULL;
166     MYSQL_RES *rs = NULL;
167 sysadm 1.3 MYSQL_ROW row;
168     char sql[SQL_BUFFER_LEN];
169     ARTICLE article;
170 sysadm 1.5 ARTICLE *p_topic;
171 sysadm 1.3 SECTION_LIST *p_section = NULL;
172     int32_t last_sid = 0;
173 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
174 sysadm 1.9 int article_count = 0;
175 sysadm 1.3 int ret = 0;
176     int i;
177    
178     db = db_open();
179     if (db == NULL)
180     {
181     log_error("db_open() error: %s\n", mysql_error(db));
182 sysadm 1.23 ret = -1;
183     goto cleanup;
184 sysadm 1.3 }
185    
186     snprintf(sql, sizeof(sql),
187 sysadm 1.11 "SELECT bbs.AID, TID, SID, bbs.CID, UID, visible, excerption, ontop, `lock`, "
188     "transship, username, nickname, title, UNIX_TIMESTAMP(sub_dt) AS sub_dt, "
189 sysadm 1.16 "sub_ip, bbs_content.content "
190 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
191     "WHERE bbs.AID >= %d ORDER BY bbs.AID LIMIT %d",
192 sysadm 1.9 start_aid, article_count_limit);
193 sysadm 1.3
194     if (mysql_query(db, sql) != 0)
195     {
196     log_error("Query article list error: %s\n", mysql_error(db));
197 sysadm 1.23 ret = -2;
198     goto cleanup;
199 sysadm 1.3 }
200 sysadm 1.11 if ((rs = mysql_use_result(db)) == NULL)
201 sysadm 1.3 {
202     log_error("Get article list data failed\n");
203 sysadm 1.23 ret = -2;
204     goto cleanup;
205 sysadm 1.3 }
206    
207     // acquire global lock
208 sysadm 1.23 if (global_lock && (ret = section_list_rw_lock(NULL)) < 0)
209 sysadm 1.3 {
210 sysadm 1.23 log_error("section_list_rw_lock(sid = 0) error\n");
211     goto cleanup;
212 sysadm 1.3 }
213    
214     while ((row = mysql_fetch_row(rs)))
215     {
216 sysadm 1.22 memset(&article, 0, sizeof(ARTICLE));
217 sysadm 1.3
218     // copy data of article
219     i = 0;
220    
221     article.aid = atoi(row[i++]);
222     article.tid = atoi(row[i++]);
223     article.sid = atoi(row[i++]);
224     article.cid = atoi(row[i++]);
225     article.uid = atoi(row[i++]);
226     article.visible = (int8_t)atoi(row[i++]);
227     article.excerption = (int8_t)atoi(row[i++]);
228     article.ontop = (int8_t)atoi(row[i++]);
229     article.lock = (int8_t)atoi(row[i++]);
230 sysadm 1.5 article.transship = (int8_t)atoi(row[i++]);
231 sysadm 1.3
232     strncpy(article.username, row[i++], sizeof(article.username) - 1);
233     article.username[sizeof(article.username) - 1] = '\0';
234     strncpy(article.nickname, row[i++], sizeof(article.nickname) - 1);
235     article.nickname[sizeof(article.nickname) - 1] = '\0';
236     strncpy(article.title, row[i++], sizeof(article.title) - 1);
237     article.title[sizeof(article.title) - 1] = '\0';
238    
239     article.sub_dt = atol(row[i++]);
240    
241 sysadm 1.16 strncpy(sub_ip, row[i++], sizeof(sub_ip) - 1);
242     sub_ip[sizeof(sub_ip) - 1] = '\0';
243     ip_mask(sub_ip, 1, '*');
244    
245 sysadm 1.3 // release lock of last section if different from current one
246     if (!global_lock && article.sid != last_sid && last_sid != 0)
247     {
248     if ((ret = section_list_rw_unlock(p_section)) < 0)
249     {
250 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
251 sysadm 1.3 break;
252     }
253     }
254    
255     if ((p_section = section_list_find_by_sid(article.sid)) == NULL)
256     {
257     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", article.sid);
258 sysadm 1.4 ret = ERR_UNKNOWN_SECTION; // Unknown section found
259 sysadm 1.3 break;
260     }
261    
262 sysadm 1.5 if (article.visible != 0 && article.tid != 0)
263     {
264     // Check if topic article is visible
265     p_topic = article_block_find_by_aid(article.tid);
266     if (p_topic == NULL || p_topic->visible == 0)
267     {
268     // log_error("Set article (aid = %d) as invisible due to invisible or non-existing topic head\n", article.aid);
269     article.tid = 0;
270     article.visible = 0;
271     }
272     }
273    
274 sysadm 1.3 // acquire lock of current section if different from last one
275     if (!global_lock && article.sid != last_sid)
276     {
277 sysadm 1.4 if ((ret = section_list_rw_lock(p_section)) < 0)
278 sysadm 1.3 {
279 sysadm 1.11 log_error("section_list_rw_lock(sid=0) error\n");
280 sysadm 1.3 break;
281     }
282     }
283    
284     // append article to section list
285     last_sid = article.sid;
286    
287     if (section_list_append_article(p_section, &article) < 0)
288     {
289 sysadm 1.11 log_error("section_list_append_article(sid=%d, aid=%d) error\n",
290 sysadm 1.3 p_section->sid, article.aid);
291     ret = -3;
292     break;
293     }
294 sysadm 1.9
295     article_count++;
296    
297 sysadm 1.16 if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, &article, p_section, row[i++], sub_ip, 0) < 0)
298 sysadm 1.11 {
299     log_error("article_cache_generate(aid=%d, cid=%d) error\n", article.aid, article.cid);
300     ret = -4;
301     break;
302     }
303 sysadm 1.3 }
304    
305     // release lock of last section
306     if (!global_lock && last_sid != 0)
307     {
308     if ((ret = section_list_rw_unlock(p_section)) < 0)
309     {
310 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
311 sysadm 1.3 }
312     }
313    
314     // release global lock
315 sysadm 1.23 if (global_lock && (ret = section_list_rw_unlock(NULL)) < 0)
316 sysadm 1.3 {
317 sysadm 1.23 log_error("section_list_rw_unlock(sid=0) error\n");
318 sysadm 1.3 }
319    
320     cleanup:
321     mysql_free_result(rs);
322     mysql_close(db);
323    
324 sysadm 1.31 article_cache_cleanup();
325    
326 sysadm 1.9 return (ret < 0 ? ret : article_count);
327 sysadm 1.3 }
328 sysadm 1.4
329 sysadm 1.5 int set_last_article_op_log_from_db(void)
330     {
331 sysadm 1.23 MYSQL *db = NULL;
332     MYSQL_RES *rs = NULL;
333 sysadm 1.5 MYSQL_ROW row;
334     char sql[SQL_BUFFER_LEN];
335 sysadm 1.23 int ret = 0;
336 sysadm 1.5
337     db = db_open();
338     if (db == NULL)
339     {
340     log_error("db_open() error: %s\n", mysql_error(db));
341 sysadm 1.23 ret = -1;
342     goto cleanup;
343 sysadm 1.5 }
344    
345     snprintf(sql, sizeof(sql),
346     "SELECT MID FROM bbs_article_op ORDER BY MID DESC LIMIT 1");
347    
348     if (mysql_query(db, sql) != 0)
349     {
350     log_error("Query article op error: %s\n", mysql_error(db));
351 sysadm 1.23 ret = -2;
352     goto cleanup;
353 sysadm 1.5 }
354     if ((rs = mysql_store_result(db)) == NULL)
355     {
356     log_error("Get article op data failed\n");
357 sysadm 1.23 ret = -2;
358     goto cleanup;
359 sysadm 1.5 }
360    
361     if ((row = mysql_fetch_row(rs)))
362     {
363     last_article_op_log_mid = atoi(row[0]);
364     }
365    
366 sysadm 1.23 cleanup:
367 sysadm 1.5 mysql_free_result(rs);
368     mysql_close(db);
369    
370 sysadm 1.23 return (ret < 0 ? ret : last_article_op_log_mid);
371 sysadm 1.5 }
372    
373 sysadm 1.9 int apply_article_op_log_from_db(int op_count_limit)
374 sysadm 1.5 {
375 sysadm 1.23 MYSQL *db = NULL;
376     MYSQL_RES *rs = NULL, *rs2 = NULL;
377 sysadm 1.5 MYSQL_ROW row, row2;
378     char sql[SQL_BUFFER_LEN];
379     ARTICLE *p_article;
380     SECTION_LIST *p_section = NULL;
381     SECTION_LIST *p_section_dest;
382 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
383 sysadm 1.5 int32_t last_sid = 0;
384     int32_t sid_dest;
385 sysadm 1.9 int op_count = 0;
386 sysadm 1.5 int ret = 0;
387    
388     db = db_open();
389     if (db == NULL)
390     {
391     log_error("db_open() error: %s\n", mysql_error(db));
392 sysadm 1.23 ret = -1;
393     goto cleanup;
394 sysadm 1.5 }
395    
396     snprintf(sql, sizeof(sql),
397     "SELECT MID, AID, type FROM bbs_article_op "
398 sysadm 1.9 "WHERE MID > %d AND type NOT IN ('A') "
399     "ORDER BY MID LIMIT %d",
400     last_article_op_log_mid, op_count_limit);
401 sysadm 1.5
402     if (mysql_query(db, sql) != 0)
403     {
404     log_error("Query article log error: %s\n", mysql_error(db));
405 sysadm 1.23 ret = -2;
406     goto cleanup;
407 sysadm 1.5 }
408     if ((rs = mysql_store_result(db)) == NULL)
409     {
410     log_error("Get article log data failed\n");
411 sysadm 1.23 ret = -2;
412     goto cleanup;
413 sysadm 1.5 }
414    
415     while ((row = mysql_fetch_row(rs)))
416     {
417     p_article = article_block_find_by_aid(atoi(row[1]));
418     if (p_article == NULL) // related article has not been appended yet
419     {
420     ret = -2;
421     break;
422     }
423    
424     // release lock of last section if different from current one
425     if (p_article->sid != last_sid && last_sid != 0)
426     {
427     if ((ret = section_list_rw_unlock(p_section)) < 0)
428     {
429     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
430     break;
431     }
432     }
433    
434     if ((p_section = section_list_find_by_sid(p_article->sid)) == NULL)
435     {
436     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", p_article->sid);
437     ret = ERR_UNKNOWN_SECTION; // Unknown section found
438     break;
439     }
440    
441     // acquire lock of current section if different from last one
442     if (p_article->sid != last_sid)
443     {
444     if ((ret = section_list_rw_lock(p_section)) < 0)
445     {
446     log_error("section_list_rw_lock(sid = 0) error\n");
447     break;
448     }
449     }
450    
451     last_sid = p_article->sid;
452    
453     switch (row[2][0])
454     {
455     case 'A': // Add article
456     log_error("Operation type=A should not be found\n");
457     break;
458     case 'D': // Delete article
459     case 'X': // Delete article by Admin
460 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 0) < 0)
461 sysadm 1.5 {
462 sysadm 1.20 log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=0) error\n", p_section->sid, atoi(row[1]));
463     }
464     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
465     {
466     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
467 sysadm 1.5 }
468     break;
469     case 'S': // Restore article
470 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 1) < 0)
471     {
472     log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=1) error\n", p_section->sid, atoi(row[1]));
473     }
474     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
475     {
476     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
477     }
478 sysadm 1.5 break;
479     case 'L': // Lock article
480     p_article->lock = 1;
481     break;
482     case 'U': // Unlock article
483     p_article->lock = 0;
484     break;
485     case 'M': // Modify article
486 sysadm 1.9 snprintf(sql, sizeof(sql),
487 sysadm 1.16 "SELECT bbs.CID, sub_ip, bbs_content.content "
488 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
489     "WHERE bbs.AID = %d",
490 sysadm 1.9 p_article->aid);
491    
492     if (mysql_query(db, sql) != 0)
493     {
494     log_error("Query article error: %s\n", mysql_error(db));
495     ret = -3;
496     break;
497     }
498 sysadm 1.12 if ((rs2 = mysql_use_result(db)) == NULL)
499 sysadm 1.9 {
500     log_error("Get article data failed\n");
501     ret = -3;
502     break;
503     }
504     if ((row2 = mysql_fetch_row(rs2)))
505     {
506     p_article->cid = atoi(row2[0]);
507 sysadm 1.11
508 sysadm 1.16 strncpy(sub_ip, row2[1], sizeof(sub_ip) - 1);
509     sub_ip[sizeof(sub_ip) - 1] = '\0';
510     ip_mask(sub_ip, 1, '*');
511    
512     if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, p_article, p_section, row2[2], sub_ip, 0) < 0)
513 sysadm 1.11 {
514     log_error("article_cache_generate(aid=%d, cid=%d) error\n", p_article->aid, p_article->cid);
515     ret = -4;
516     }
517 sysadm 1.9 }
518     else
519     {
520     p_article->cid = 0;
521     ret = -4;
522     }
523     mysql_free_result(rs2);
524 sysadm 1.23 rs2 = NULL;
525 sysadm 1.21
526     p_article->excerption = 0; // Set excerption = 0 implicitly in case of rare condition
527 sysadm 1.5 break;
528     case 'T': // Move article
529     snprintf(sql, sizeof(sql),
530     "SELECT SID FROM bbs WHERE AID = %d",
531     p_article->aid);
532    
533     if (mysql_query(db, sql) != 0)
534     {
535     log_error("Query article error: %s\n", mysql_error(db));
536     ret = -3;
537     break;
538     }
539     if ((rs2 = mysql_store_result(db)) == NULL)
540     {
541     log_error("Get article data failed\n");
542     ret = -3;
543     break;
544     }
545     if ((row2 = mysql_fetch_row(rs2)))
546     {
547     sid_dest = atoi(row2[0]);
548     }
549     else
550     {
551     sid_dest = 0;
552     ret = -4;
553     }
554     mysql_free_result(rs2);
555 sysadm 1.23 rs2 = NULL;
556 sysadm 1.5
557     if (sid_dest > 0 && sid_dest != p_article->sid)
558     {
559     p_section_dest = section_list_find_by_sid(sid_dest);
560     if (p_section_dest == NULL)
561     {
562     ret = ERR_UNKNOWN_SECTION;
563     break;
564     }
565 sysadm 1.6 // acquire lock of dest section
566     if ((ret = section_list_rw_lock(p_section_dest)) < 0)
567     {
568     log_error("section_list_rw_lock(sid = %d) error\n", p_section_dest);
569     break;
570     }
571 sysadm 1.5 // Move topic
572     if ((ret = section_list_move_topic(p_section, p_section_dest, p_article->aid)) < 0)
573     {
574 sysadm 1.6 log_error("section_list_move_topic(src_sid=%d, dest_sid=%d, aid=%d) error (%d), retry in the next loop\n",
575     p_section->sid, p_section_dest->sid, p_article->aid, ret);
576     }
577     // release lock of dest section
578     if (section_list_rw_unlock(p_section_dest) < 0)
579     {
580     log_error("section_list_rw_unlock(sid = %d) error\n", p_section_dest);
581     ret = -1;
582 sysadm 1.5 }
583     }
584     break;
585     case 'E': // Set article as excerption
586     p_article->excerption = 1;
587     break;
588     case 'O': // Unset article as excerption
589     p_article->excerption = 0;
590     break;
591     case 'F': // Set article on top
592     case 'V': // Unset article on top
593 sysadm 1.32 p_article->ontop = (row[2][0] == 'F' ? 1 : 0);
594     if (section_list_update_article_ontop(p_section, p_article) < 0)
595     {
596     log_error("section_list_update_article_ontop(sid=%d, aid=%d) error\n",
597     p_section->sid, p_article->aid);
598     }
599 sysadm 1.5 break;
600     case 'Z': // Set article as trnasship
601     p_article->transship = 1;
602     break;
603     default:
604     // log_error("Operation type=%s unknown, mid=%s\n", row[2], row[0]);
605     break;
606     }
607    
608     if (ret < 0)
609     {
610     break;
611     }
612    
613     // Update MID with last successfully proceeded article_op_log
614     last_article_op_log_mid = atoi(row[0]);
615 sysadm 1.9
616     op_count++;
617 sysadm 1.5 }
618    
619     // release lock of last section
620     if (last_sid != 0)
621     {
622     if ((ret = section_list_rw_unlock(p_section)) < 0)
623     {
624     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
625     }
626     }
627    
628 sysadm 1.23 cleanup:
629     mysql_free_result(rs2);
630 sysadm 1.5 mysql_free_result(rs);
631     mysql_close(db);
632    
633 sysadm 1.9 return (ret < 0 ? ret : op_count);
634 sysadm 1.5 }
635    
636 sysadm 1.4 int section_list_loader_launch(void)
637     {
638     int pid;
639     int ret;
640     int32_t last_aid;
641     int article_count;
642     int load_count;
643 sysadm 1.5 int last_mid;
644 sysadm 1.4 int i;
645    
646     if (section_list_loader_pid != 0)
647     {
648     log_error("section_list_loader already running, pid = %d\n", section_list_loader_pid);
649     return -2;
650     }
651    
652     pid = fork();
653    
654     if (pid > 0) // Parent process
655     {
656     SYS_child_process_count++;
657     section_list_loader_pid = pid;
658 sysadm 1.18 log_common("Section list loader process (pid = %d) start\n", pid);
659 sysadm 1.4 return 0;
660     }
661     else if (pid < 0) // Error
662     {
663     log_error("fork() error (%d)\n", errno);
664     return -1;
665     }
666    
667     // Child process
668     SYS_child_process_count = 0;
669    
670     // Detach menu in shared memory
671     detach_menu_shm(p_bbs_menu);
672     free(p_bbs_menu);
673     p_bbs_menu = NULL;
674    
675     // Do section data loader periodically
676     while (!SYS_server_exit)
677     {
678     if (SYS_section_list_reload)
679     {
680     SYS_section_list_reload = 0;
681    
682     // Load section config
683     if (load_section_config_from_db() < 0)
684     {
685     log_error("load_section_config_from_db() error\n");
686     }
687     else
688     {
689 sysadm 1.27 log_common("Reload section config successfully\n");
690 sysadm 1.4 }
691     }
692    
693     // Load section articles
694     article_count = article_block_article_count();
695    
696 sysadm 1.9 do
697 sysadm 1.4 {
698 sysadm 1.9 last_aid = article_block_last_aid();
699 sysadm 1.4
700 sysadm 1.9 if ((ret = append_articles_from_db(last_aid + 1, 0, LOAD_ARTICLE_COUNT_LIMIT)) < 0)
701 sysadm 1.4 {
702 sysadm 1.9 log_error("append_articles_from_db(%d, 0, %d) error\n", last_aid + 1, LOAD_ARTICLE_COUNT_LIMIT);
703    
704     if (ret == ERR_UNKNOWN_SECTION)
705     {
706     SYS_section_list_reload = 1; // Force reload section_list
707     }
708 sysadm 1.4 }
709 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
710 sysadm 1.5
711     load_count = article_block_article_count() - article_count;
712     if (load_count > 0)
713     {
714 sysadm 1.17 log_common("Incrementally load %d articles, last_aid = %d\n", load_count, article_block_last_aid());
715 sysadm 1.5 }
716    
717     if (SYS_section_list_reload)
718     {
719     continue;
720     }
721    
722     // Load article_op log
723     last_mid = last_article_op_log_mid;
724    
725 sysadm 1.9 do
726 sysadm 1.4 {
727 sysadm 1.9 if ((ret = apply_article_op_log_from_db(LOAD_ARTICLE_COUNT_LIMIT)) < 0)
728     {
729     log_error("apply_article_op_log_from_db() error\n");
730 sysadm 1.4
731 sysadm 1.9 if (ret == ERR_UNKNOWN_SECTION)
732     {
733     SYS_section_list_reload = 1; // Force reload section_list
734     }
735 sysadm 1.4 }
736 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
737 sysadm 1.4
738 sysadm 1.5 if (last_article_op_log_mid > last_mid)
739     {
740 sysadm 1.17 log_common("Proceeded %d article logs, last_mid = %d\n", last_article_op_log_mid - last_mid, last_article_op_log_mid);
741 sysadm 1.5 }
742    
743     if (SYS_section_list_reload)
744     {
745     continue;
746     }
747    
748 sysadm 1.19 for (i = 0; i < BBS_section_list_load_interval && !SYS_server_exit && !SYS_section_list_reload; i++)
749 sysadm 1.5 {
750     sleep(1);
751 sysadm 1.4 }
752     }
753    
754     // Child process exit
755    
756 sysadm 1.31 article_cache_cleanup();
757    
758 sysadm 1.4 // Detach data pools shm
759     detach_section_list_shm();
760     detach_article_block_shm();
761     detach_trie_dict_shm();
762    
763 sysadm 1.17 log_common("Section list loader process exit normally\n");
764 sysadm 1.4 log_end();
765    
766     section_list_loader_pid = 0;
767    
768     _exit(0);
769    
770     return 0;
771     }
772    
773     int section_list_loader_reload(void)
774     {
775     if (section_list_loader_pid == 0)
776     {
777     log_error("section_list_loader not running\n");
778     return -2;
779     }
780    
781     if (kill(section_list_loader_pid, SIGHUP) < 0)
782     {
783     log_error("Send SIGTERM signal failed (%d)\n", errno);
784     return -1;
785     }
786    
787     return 0;
788     }
789 sysadm 1.7
790 sysadm 1.10 int query_section_articles(SECTION_LIST *p_section, int page_id, ARTICLE *p_articles[], int *p_article_count, int *p_page_count)
791 sysadm 1.7 {
792     ARTICLE *p_article;
793     ARTICLE *p_next_page_first_article;
794     int ret = 0;
795 sysadm 1.32 int i;
796 sysadm 1.7
797 sysadm 1.10 if (p_section == NULL || p_articles == NULL || p_article_count == NULL || p_page_count == NULL)
798 sysadm 1.7 {
799     log_error("query_section_articles() NULL pointer error\n");
800     return -1;
801     }
802    
803     // acquire lock of section
804     if ((ret = section_list_rd_lock(p_section)) < 0)
805     {
806     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
807     return -2;
808     }
809    
810 sysadm 1.32 *p_page_count = section_list_page_count_with_ontop(p_section);
811     *p_article_count = 0;
812 sysadm 1.10
813 sysadm 1.9 if (p_section->visible_article_count == 0)
814     {
815 sysadm 1.32 // empty section
816 sysadm 1.9 }
817 sysadm 1.32 else if (page_id < 0 || page_id >= *p_page_count)
818 sysadm 1.7 {
819 sysadm 1.32 log_error("Invalid page_id=%d, not in range [0, %d)\n", page_id, *p_page_count);
820 sysadm 1.7 ret = -3;
821     }
822     else
823     {
824     ret = page_id;
825    
826 sysadm 1.32 if (page_id <= p_section->page_count - 1)
827 sysadm 1.7 {
828 sysadm 1.32 p_article = p_section->p_page_first_article[page_id];
829     p_next_page_first_article =
830     (page_id == p_section->page_count - 1 ? p_section->p_article_head : p_section->p_page_first_article[page_id + 1]);
831    
832     do
833     {
834     if (p_article->visible)
835     {
836     p_articles[*p_article_count] = p_article;
837     (*p_article_count)++;
838     }
839     p_article = p_article->p_next;
840     } while (p_article != p_next_page_first_article && (*p_article_count) <= BBS_article_limit_per_page);
841    
842     if (*p_article_count != (page_id < p_section->page_count - 1 ? BBS_article_limit_per_page : p_section->last_page_visible_article_count))
843 sysadm 1.7 {
844 sysadm 1.32 log_error("Inconsistent visible article count %d detected in section %d page %d\n", *p_article_count, p_section->sid, page_id);
845 sysadm 1.7 }
846 sysadm 1.32 }
847 sysadm 1.8
848 sysadm 1.32 // Append ontop articles
849     if (page_id >= p_section->page_count - 1)
850 sysadm 1.8 {
851 sysadm 1.32 i = (page_id == p_section->page_count - 1
852     ? 0
853     : (page_id - p_section->page_count + 1) * BBS_article_limit_per_page - p_section->last_page_visible_article_count);
854     while (*p_article_count < BBS_article_limit_per_page && i < p_section->ontop_article_count)
855     {
856     p_articles[(*p_article_count)++] = p_section->p_ontop_articles[i++];
857     }
858 sysadm 1.8 }
859 sysadm 1.7 }
860    
861     // release lock of section
862 sysadm 1.8 if (section_list_rd_unlock(p_section) < 0)
863 sysadm 1.7 {
864     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
865     ret = -2;
866     }
867    
868     return ret;
869     }
870 sysadm 1.14
871 sysadm 1.24 int locate_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, int direction, int step,
872 sysadm 1.15 int *p_page_id, int *p_visible_offset, int *p_article_count)
873 sysadm 1.14 {
874 sysadm 1.15 const ARTICLE *p_article = NULL;
875     ARTICLE *p_tmp;
876 sysadm 1.14 int32_t aid = 0;
877 sysadm 1.24 int page_id = 0;
878     int offset = 0;
879 sysadm 1.14 int ret = 0;
880 sysadm 1.15 int i;
881 sysadm 1.14
882 sysadm 1.15 if (p_section == NULL || p_article_cur == NULL || p_page_id == NULL || p_visible_offset == NULL || p_article_count == NULL)
883 sysadm 1.14 {
884     log_error("locate_article_in_section() NULL pointer error\n");
885     return -1;
886     }
887    
888     // acquire lock of section
889     if ((ret = section_list_rd_lock(p_section)) < 0)
890     {
891     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
892     return -2;
893     }
894    
895     if (direction == 0)
896     {
897     aid = p_article_cur->aid;
898     }
899     else if (direction == 1)
900     {
901 sysadm 1.24 for (p_article = p_article_cur; step > 0 && p_article->p_topic_next->aid > p_article_cur->aid; p_article = p_article->p_topic_next)
902 sysadm 1.14 {
903 sysadm 1.24 if (p_article->visible)
904     {
905     step--;
906     }
907     }
908 sysadm 1.15
909 sysadm 1.25 aid = (p_article->aid > p_article_cur->aid && p_article->visible ? p_article->aid : 0);
910 sysadm 1.14 }
911     else if (direction == -1)
912     {
913 sysadm 1.24 for (p_article = p_article_cur; step > 0 && p_article->p_topic_prior->aid < p_article_cur->aid; p_article = p_article->p_topic_prior)
914 sysadm 1.14 {
915 sysadm 1.24 if (p_article->visible)
916     {
917     step--;
918     }
919     }
920 sysadm 1.15
921 sysadm 1.25 aid = (p_article->aid < p_article_cur->aid && p_article->visible ? p_article->aid : 0);
922 sysadm 1.14 }
923    
924 sysadm 1.15 p_article = NULL;
925    
926 sysadm 1.14 if (aid > 0)
927     {
928 sysadm 1.15 p_article = section_list_find_article_with_offset(p_section, aid, &page_id, &offset, &p_tmp);
929 sysadm 1.14 if (p_article != NULL)
930     {
931 sysadm 1.15 *p_article_count = (page_id == p_section->page_count - 1 ? p_section->last_page_visible_article_count : BBS_article_limit_per_page);
932    
933     p_article = p_section->p_page_first_article[page_id];
934 sysadm 1.25 for (i = 0; i < *p_article_count && p_article != NULL;)
935 sysadm 1.15 {
936     if (p_article->visible)
937     {
938     if (p_article->aid == aid)
939     {
940     *p_page_id = page_id;
941     *p_visible_offset = i;
942     break;
943     }
944     i++;
945     if (i >= *p_article_count)
946     {
947     log_error("Visible article (aid=%d) not found in page %d\n", aid, page_id);
948     p_article = NULL;
949 sysadm 1.25 break;
950 sysadm 1.15 }
951     }
952     p_article = p_article->p_next;
953     }
954 sysadm 1.32
955     // Include ontop articles
956     *p_article_count = section_list_page_article_count_with_ontop(p_section, page_id);
957 sysadm 1.14 }
958     }
959    
960     // release lock of section
961     if (section_list_rd_unlock(p_section) < 0)
962     {
963     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
964     ret = -2;
965     }
966    
967     return (ret < 0 ? ret : (p_article == NULL ? 0 : 1));
968     }
webmaster@leafok.com
 ViewVC Help
Powered by ViewVC 1.3.0-beta1