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

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Revision 1.40 - (hide annotations)
Tue Sep 30 05:07:46 2025 UTC (5 months, 2 weeks ago) by sysadm
Branch: MAIN
Changes since 1.39: +17 -2 lines
Content type: text/x-csrc 
Fix bug in seeking the post of the topic thread when the first/last post is invisible.
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 1.39 #include "ip_mask.h"
21 sysadm 1.1 #include "log.h"
22 sysadm 1.4 #include "menu.h"
23 sysadm 1.30 #include "section_list_loader.h"
24 sysadm 1.1 #include <errno.h>
25 sysadm 1.4 #include <signal.h>
26 sysadm 1.29 #include <stdio.h>
27 sysadm 1.1 #include <stdlib.h>
28 sysadm 1.22 #include <string.h>
29 sysadm 1.4 #include <unistd.h>
30    
31 sysadm 1.5 int section_list_loader_pid;
32     int last_article_op_log_mid;
33 sysadm 1.1
34 sysadm 1.38 int load_section_config_from_db(int update_gen_ex)
35 sysadm 1.1 {
36 sysadm 1.23 MYSQL *db = NULL;
37     MYSQL_RES *rs = NULL, *rs2 = NULL;
38 sysadm 1.1 MYSQL_ROW row, row2;
39     char sql[SQL_BUFFER_LEN];
40     int32_t sid;
41 sysadm 1.8 char master_list[(BBS_username_max_len + 1) * 3 + 1];
42 sysadm 1.1 SECTION_LIST *p_section;
43 sysadm 1.34 char ex_menu_conf[FILE_PATH_LEN];
44     MENU_SET ex_menu_set_new;
45 sysadm 1.23 int ret = 0;
46 sysadm 1.1
47 sysadm 1.2 db = db_open();
48     if (db == NULL)
49     {
50     log_error("db_open() error: %s\n", mysql_error(db));
51 sysadm 1.23 ret = -1;
52     goto cleanup;
53 sysadm 1.2 }
54    
55 sysadm 1.1 snprintf(sql, sizeof(sql),
56 sysadm 1.2 "SELECT section_config.SID, sname, section_config.title, section_config.CID, "
57 sysadm 1.34 "read_user_level, write_user_level, section_config.enable * section_class.enable AS enable, "
58     "UNIX_TIMESTAMP(ex_menu_tm) AS ex_menu_tm "
59 sysadm 1.2 "FROM section_config INNER JOIN section_class ON section_config.CID = section_class.CID "
60 sysadm 1.1 "ORDER BY section_config.SID");
61    
62     if (mysql_query(db, sql) != 0)
63     {
64     log_error("Query section_list error: %s\n", mysql_error(db));
65 sysadm 1.23 ret = -2;
66     goto cleanup;
67 sysadm 1.1 }
68     if ((rs = mysql_store_result(db)) == NULL)
69     {
70     log_error("Get section_list data failed\n");
71 sysadm 1.23 ret = -2;
72     goto cleanup;
73 sysadm 1.1 }
74 sysadm 1.2
75     ret = 0;
76 sysadm 1.1 while ((row = mysql_fetch_row(rs)))
77     {
78     sid = atoi(row[0]);
79    
80     // Query section master
81     snprintf(sql, sizeof(sql),
82     "SELECT username FROM section_master "
83     "INNER JOIN user_list ON section_master.UID = user_list.UID "
84     "WHERE SID = %d AND section_master.enable AND (NOW() BETWEEN begin_dt AND end_dt) "
85 sysadm 1.8 "ORDER BY major DESC, begin_dt ASC LIMIT 3",
86 sysadm 1.1 sid);
87    
88     if (mysql_query(db, sql) != 0)
89     {
90     log_error("Query section_master error: %s\n", mysql_error(db));
91 sysadm 1.2 ret = -3;
92     break;
93 sysadm 1.1 }
94     if ((rs2 = mysql_store_result(db)) == NULL)
95     {
96     log_error("Get section_master data failed\n");
97 sysadm 1.2 ret = -3;
98     break;
99 sysadm 1.1 }
100 sysadm 1.8
101     master_list[0] = '\0';
102     while ((row2 = mysql_fetch_row(rs2)))
103 sysadm 1.1 {
104 sysadm 1.8 strncat(master_list, row2[0], sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
105     strncat(master_list, " ", sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
106 sysadm 1.1 }
107     mysql_free_result(rs2);
108 sysadm 1.23 rs2 = NULL;
109 sysadm 1.1
110     p_section = section_list_find_by_sid(sid);
111    
112     if (p_section == NULL)
113     {
114 sysadm 1.8 p_section = section_list_create(sid, row[1], row[2], master_list);
115 sysadm 1.1 if (p_section == NULL)
116     {
117 sysadm 1.2 log_error("section_list_create() error: load new section sid = %d sname = %s\n", sid, row[1]);
118     ret = -4;
119 sysadm 1.1 break;
120     }
121    
122     // acquire rw lock
123     ret = section_list_rw_lock(p_section);
124     if (ret < 0)
125     {
126     break;
127     }
128     }
129     else
130     {
131     // acquire rw lock
132     ret = section_list_rw_lock(p_section);
133     if (ret < 0)
134     {
135     break;
136     }
137    
138 sysadm 1.35 strncpy(p_section->sname, row[1], sizeof(p_section->sname) - 1);
139 sysadm 1.1 p_section->sname[sizeof(p_section->sname) - 1] = '\0';
140 sysadm 1.35 strncpy(p_section->stitle, row[2], sizeof(p_section->stitle) - 1);
141 sysadm 1.1 p_section->stitle[sizeof(p_section->stitle) - 1] = '\0';
142 sysadm 1.8 strncpy(p_section->master_list, master_list, sizeof(p_section->master_list) - 1);
143     p_section->master_list[sizeof(p_section->master_list) - 1] = '\0';
144 sysadm 1.1 }
145    
146     p_section->class_id = atoi(row[3]);
147     p_section->read_user_level = atoi(row[4]);
148     p_section->write_user_level = atoi(row[5]);
149     p_section->enable = (int8_t)atoi(row[6]);
150    
151 sysadm 1.34 // Update gen_ex menu set
152 sysadm 1.38 if (update_gen_ex && p_section->enable && atoi(row[7]) > p_section->ex_menu_tm)
153 sysadm 1.34 {
154     snprintf(ex_menu_conf, sizeof(ex_menu_conf), "%s/%d", VAR_GEN_EX_MENU_DIR, p_section->sid);
155    
156 sysadm 1.38 ret = load_menu(&ex_menu_set_new, ex_menu_conf);
157 sysadm 1.34 if (ret < 0)
158     {
159 sysadm 1.38 unload_menu(&ex_menu_set_new);
160     log_error("load_menu(%s) error: %d\n", ex_menu_conf, ret);
161 sysadm 1.34 }
162     else
163     {
164 sysadm 1.38 if (p_section->ex_menu_tm > 0)
165 sysadm 1.34 {
166 sysadm 1.38 unload_menu(&(p_section->ex_menu_set));
167 sysadm 1.34 }
168    
169 sysadm 1.38 ex_menu_set_new.allow_exit = 1; // Allow exit menu
170     memcpy(&(p_section->ex_menu_set), &ex_menu_set_new, sizeof(ex_menu_set_new));
171 sysadm 1.34
172 sysadm 1.38 p_section->ex_menu_tm = atol(row[7]);
173 sysadm 1.34 #ifdef _DEBUG
174 sysadm 1.38 log_common("Loaded gen_ex_menu of section %d [%s]\n", p_section->sid, p_section->sname);
175 sysadm 1.34 #endif
176     }
177     }
178    
179 sysadm 1.1 // release rw lock
180     ret = section_list_rw_unlock(p_section);
181     if (ret < 0)
182     {
183     break;
184     }
185     }
186 sysadm 1.23
187     cleanup:
188 sysadm 1.31 mysql_free_result(rs2);
189 sysadm 1.1 mysql_free_result(rs);
190 sysadm 1.2 mysql_close(db);
191    
192     return ret;
193 sysadm 1.1 }
194 sysadm 1.3
195 sysadm 1.9 int append_articles_from_db(int32_t start_aid, int global_lock, int article_count_limit)
196 sysadm 1.3 {
197 sysadm 1.23 MYSQL *db = NULL;
198     MYSQL_RES *rs = NULL;
199 sysadm 1.3 MYSQL_ROW row;
200     char sql[SQL_BUFFER_LEN];
201     ARTICLE article;
202 sysadm 1.5 ARTICLE *p_topic;
203 sysadm 1.3 SECTION_LIST *p_section = NULL;
204     int32_t last_sid = 0;
205 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
206 sysadm 1.9 int article_count = 0;
207 sysadm 1.3 int ret = 0;
208     int i;
209    
210     db = db_open();
211     if (db == NULL)
212     {
213     log_error("db_open() error: %s\n", mysql_error(db));
214 sysadm 1.23 ret = -1;
215     goto cleanup;
216 sysadm 1.3 }
217    
218     snprintf(sql, sizeof(sql),
219 sysadm 1.11 "SELECT bbs.AID, TID, SID, bbs.CID, UID, visible, excerption, ontop, `lock`, "
220     "transship, username, nickname, title, UNIX_TIMESTAMP(sub_dt) AS sub_dt, "
221 sysadm 1.16 "sub_ip, bbs_content.content "
222 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
223     "WHERE bbs.AID >= %d ORDER BY bbs.AID LIMIT %d",
224 sysadm 1.9 start_aid, article_count_limit);
225 sysadm 1.3
226     if (mysql_query(db, sql) != 0)
227     {
228     log_error("Query article list error: %s\n", mysql_error(db));
229 sysadm 1.23 ret = -2;
230     goto cleanup;
231 sysadm 1.3 }
232 sysadm 1.11 if ((rs = mysql_use_result(db)) == NULL)
233 sysadm 1.3 {
234     log_error("Get article list data failed\n");
235 sysadm 1.23 ret = -2;
236     goto cleanup;
237 sysadm 1.3 }
238    
239     // acquire global lock
240 sysadm 1.23 if (global_lock && (ret = section_list_rw_lock(NULL)) < 0)
241 sysadm 1.3 {
242 sysadm 1.23 log_error("section_list_rw_lock(sid = 0) error\n");
243     goto cleanup;
244 sysadm 1.3 }
245    
246     while ((row = mysql_fetch_row(rs)))
247     {
248 sysadm 1.22 memset(&article, 0, sizeof(ARTICLE));
249 sysadm 1.3
250     // copy data of article
251     i = 0;
252    
253     article.aid = atoi(row[i++]);
254     article.tid = atoi(row[i++]);
255     article.sid = atoi(row[i++]);
256     article.cid = atoi(row[i++]);
257     article.uid = atoi(row[i++]);
258     article.visible = (int8_t)atoi(row[i++]);
259     article.excerption = (int8_t)atoi(row[i++]);
260     article.ontop = (int8_t)atoi(row[i++]);
261     article.lock = (int8_t)atoi(row[i++]);
262 sysadm 1.5 article.transship = (int8_t)atoi(row[i++]);
263 sysadm 1.3
264     strncpy(article.username, row[i++], sizeof(article.username) - 1);
265     article.username[sizeof(article.username) - 1] = '\0';
266     strncpy(article.nickname, row[i++], sizeof(article.nickname) - 1);
267     article.nickname[sizeof(article.nickname) - 1] = '\0';
268     strncpy(article.title, row[i++], sizeof(article.title) - 1);
269     article.title[sizeof(article.title) - 1] = '\0';
270    
271     article.sub_dt = atol(row[i++]);
272    
273 sysadm 1.16 strncpy(sub_ip, row[i++], sizeof(sub_ip) - 1);
274     sub_ip[sizeof(sub_ip) - 1] = '\0';
275     ip_mask(sub_ip, 1, '*');
276    
277 sysadm 1.3 // release lock of last section if different from current one
278     if (!global_lock && article.sid != last_sid && last_sid != 0)
279     {
280     if ((ret = section_list_rw_unlock(p_section)) < 0)
281     {
282 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
283 sysadm 1.3 break;
284     }
285     }
286    
287     if ((p_section = section_list_find_by_sid(article.sid)) == NULL)
288     {
289     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", article.sid);
290 sysadm 1.4 ret = ERR_UNKNOWN_SECTION; // Unknown section found
291 sysadm 1.3 break;
292     }
293    
294 sysadm 1.5 if (article.visible != 0 && article.tid != 0)
295     {
296     // Check if topic article is visible
297     p_topic = article_block_find_by_aid(article.tid);
298     if (p_topic == NULL || p_topic->visible == 0)
299     {
300     // log_error("Set article (aid = %d) as invisible due to invisible or non-existing topic head\n", article.aid);
301     article.tid = 0;
302     article.visible = 0;
303     }
304     }
305    
306 sysadm 1.3 // acquire lock of current section if different from last one
307     if (!global_lock && article.sid != last_sid)
308     {
309 sysadm 1.4 if ((ret = section_list_rw_lock(p_section)) < 0)
310 sysadm 1.3 {
311 sysadm 1.11 log_error("section_list_rw_lock(sid=0) error\n");
312 sysadm 1.3 break;
313     }
314     }
315    
316     // append article to section list
317     last_sid = article.sid;
318    
319     if (section_list_append_article(p_section, &article) < 0)
320     {
321 sysadm 1.11 log_error("section_list_append_article(sid=%d, aid=%d) error\n",
322 sysadm 1.3 p_section->sid, article.aid);
323     ret = -3;
324     break;
325     }
326 sysadm 1.9
327     article_count++;
328    
329 sysadm 1.16 if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, &article, p_section, row[i++], sub_ip, 0) < 0)
330 sysadm 1.11 {
331     log_error("article_cache_generate(aid=%d, cid=%d) error\n", article.aid, article.cid);
332     ret = -4;
333     break;
334     }
335 sysadm 1.3 }
336    
337     // release lock of last section
338     if (!global_lock && last_sid != 0)
339     {
340     if ((ret = section_list_rw_unlock(p_section)) < 0)
341     {
342 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
343 sysadm 1.3 }
344     }
345    
346     // release global lock
347 sysadm 1.23 if (global_lock && (ret = section_list_rw_unlock(NULL)) < 0)
348 sysadm 1.3 {
349 sysadm 1.23 log_error("section_list_rw_unlock(sid=0) error\n");
350 sysadm 1.3 }
351    
352     cleanup:
353     mysql_free_result(rs);
354     mysql_close(db);
355    
356 sysadm 1.31 article_cache_cleanup();
357    
358 sysadm 1.9 return (ret < 0 ? ret : article_count);
359 sysadm 1.3 }
360 sysadm 1.4
361 sysadm 1.5 int set_last_article_op_log_from_db(void)
362     {
363 sysadm 1.23 MYSQL *db = NULL;
364     MYSQL_RES *rs = NULL;
365 sysadm 1.5 MYSQL_ROW row;
366     char sql[SQL_BUFFER_LEN];
367 sysadm 1.23 int ret = 0;
368 sysadm 1.5
369     db = db_open();
370     if (db == NULL)
371     {
372     log_error("db_open() error: %s\n", mysql_error(db));
373 sysadm 1.23 ret = -1;
374     goto cleanup;
375 sysadm 1.5 }
376    
377     snprintf(sql, sizeof(sql),
378     "SELECT MID FROM bbs_article_op ORDER BY MID DESC LIMIT 1");
379    
380     if (mysql_query(db, sql) != 0)
381     {
382     log_error("Query article op error: %s\n", mysql_error(db));
383 sysadm 1.23 ret = -2;
384     goto cleanup;
385 sysadm 1.5 }
386     if ((rs = mysql_store_result(db)) == NULL)
387     {
388     log_error("Get article op data failed\n");
389 sysadm 1.23 ret = -2;
390     goto cleanup;
391 sysadm 1.5 }
392    
393     if ((row = mysql_fetch_row(rs)))
394     {
395     last_article_op_log_mid = atoi(row[0]);
396     }
397    
398 sysadm 1.23 cleanup:
399 sysadm 1.5 mysql_free_result(rs);
400     mysql_close(db);
401    
402 sysadm 1.23 return (ret < 0 ? ret : last_article_op_log_mid);
403 sysadm 1.5 }
404    
405 sysadm 1.9 int apply_article_op_log_from_db(int op_count_limit)
406 sysadm 1.5 {
407 sysadm 1.23 MYSQL *db = NULL;
408     MYSQL_RES *rs = NULL, *rs2 = NULL;
409 sysadm 1.5 MYSQL_ROW row, row2;
410     char sql[SQL_BUFFER_LEN];
411     ARTICLE *p_article;
412     SECTION_LIST *p_section = NULL;
413     SECTION_LIST *p_section_dest;
414 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
415 sysadm 1.5 int32_t last_sid = 0;
416     int32_t sid_dest;
417 sysadm 1.9 int op_count = 0;
418 sysadm 1.5 int ret = 0;
419    
420     db = db_open();
421     if (db == NULL)
422     {
423     log_error("db_open() error: %s\n", mysql_error(db));
424 sysadm 1.23 ret = -1;
425     goto cleanup;
426 sysadm 1.5 }
427    
428     snprintf(sql, sizeof(sql),
429     "SELECT MID, AID, type FROM bbs_article_op "
430 sysadm 1.9 "WHERE MID > %d AND type NOT IN ('A') "
431     "ORDER BY MID LIMIT %d",
432     last_article_op_log_mid, op_count_limit);
433 sysadm 1.5
434     if (mysql_query(db, sql) != 0)
435     {
436     log_error("Query article log error: %s\n", mysql_error(db));
437 sysadm 1.23 ret = -2;
438     goto cleanup;
439 sysadm 1.5 }
440     if ((rs = mysql_store_result(db)) == NULL)
441     {
442     log_error("Get article log data failed\n");
443 sysadm 1.23 ret = -2;
444     goto cleanup;
445 sysadm 1.5 }
446    
447     while ((row = mysql_fetch_row(rs)))
448     {
449     p_article = article_block_find_by_aid(atoi(row[1]));
450     if (p_article == NULL) // related article has not been appended yet
451     {
452     ret = -2;
453     break;
454     }
455    
456     // release lock of last section if different from current one
457     if (p_article->sid != last_sid && last_sid != 0)
458     {
459     if ((ret = section_list_rw_unlock(p_section)) < 0)
460     {
461     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
462     break;
463     }
464     }
465    
466     if ((p_section = section_list_find_by_sid(p_article->sid)) == NULL)
467     {
468     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", p_article->sid);
469     ret = ERR_UNKNOWN_SECTION; // Unknown section found
470     break;
471     }
472    
473     // acquire lock of current section if different from last one
474     if (p_article->sid != last_sid)
475     {
476     if ((ret = section_list_rw_lock(p_section)) < 0)
477     {
478     log_error("section_list_rw_lock(sid = 0) error\n");
479     break;
480     }
481     }
482    
483     last_sid = p_article->sid;
484    
485     switch (row[2][0])
486     {
487     case 'A': // Add article
488     log_error("Operation type=A should not be found\n");
489     break;
490     case 'D': // Delete article
491     case 'X': // Delete article by Admin
492 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 0) < 0)
493 sysadm 1.5 {
494 sysadm 1.20 log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=0) error\n", p_section->sid, atoi(row[1]));
495     }
496     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
497     {
498     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
499 sysadm 1.5 }
500     break;
501     case 'S': // Restore article
502 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 1) < 0)
503     {
504     log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=1) error\n", p_section->sid, atoi(row[1]));
505     }
506     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
507     {
508     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
509     }
510 sysadm 1.5 break;
511     case 'L': // Lock article
512     p_article->lock = 1;
513     break;
514     case 'U': // Unlock article
515     p_article->lock = 0;
516     break;
517     case 'M': // Modify article
518 sysadm 1.9 snprintf(sql, sizeof(sql),
519 sysadm 1.16 "SELECT bbs.CID, sub_ip, bbs_content.content "
520 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
521     "WHERE bbs.AID = %d",
522 sysadm 1.9 p_article->aid);
523    
524     if (mysql_query(db, sql) != 0)
525     {
526     log_error("Query article error: %s\n", mysql_error(db));
527     ret = -3;
528     break;
529     }
530 sysadm 1.12 if ((rs2 = mysql_use_result(db)) == NULL)
531 sysadm 1.9 {
532     log_error("Get article data failed\n");
533     ret = -3;
534     break;
535     }
536     if ((row2 = mysql_fetch_row(rs2)))
537     {
538     p_article->cid = atoi(row2[0]);
539 sysadm 1.11
540 sysadm 1.16 strncpy(sub_ip, row2[1], sizeof(sub_ip) - 1);
541     sub_ip[sizeof(sub_ip) - 1] = '\0';
542     ip_mask(sub_ip, 1, '*');
543    
544     if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, p_article, p_section, row2[2], sub_ip, 0) < 0)
545 sysadm 1.11 {
546     log_error("article_cache_generate(aid=%d, cid=%d) error\n", p_article->aid, p_article->cid);
547     ret = -4;
548     }
549 sysadm 1.9 }
550     else
551     {
552     p_article->cid = 0;
553     ret = -4;
554     }
555     mysql_free_result(rs2);
556 sysadm 1.23 rs2 = NULL;
557 sysadm 1.21
558     p_article->excerption = 0; // Set excerption = 0 implicitly in case of rare condition
559 sysadm 1.5 break;
560     case 'T': // Move article
561     snprintf(sql, sizeof(sql),
562     "SELECT SID FROM bbs WHERE AID = %d",
563     p_article->aid);
564    
565     if (mysql_query(db, sql) != 0)
566     {
567     log_error("Query article error: %s\n", mysql_error(db));
568     ret = -3;
569     break;
570     }
571     if ((rs2 = mysql_store_result(db)) == NULL)
572     {
573     log_error("Get article data failed\n");
574     ret = -3;
575     break;
576     }
577     if ((row2 = mysql_fetch_row(rs2)))
578     {
579     sid_dest = atoi(row2[0]);
580     }
581     else
582     {
583     sid_dest = 0;
584     ret = -4;
585     }
586     mysql_free_result(rs2);
587 sysadm 1.23 rs2 = NULL;
588 sysadm 1.5
589     if (sid_dest > 0 && sid_dest != p_article->sid)
590     {
591     p_section_dest = section_list_find_by_sid(sid_dest);
592     if (p_section_dest == NULL)
593     {
594     ret = ERR_UNKNOWN_SECTION;
595     break;
596     }
597 sysadm 1.6 // acquire lock of dest section
598     if ((ret = section_list_rw_lock(p_section_dest)) < 0)
599     {
600     log_error("section_list_rw_lock(sid = %d) error\n", p_section_dest);
601     break;
602     }
603 sysadm 1.5 // Move topic
604     if ((ret = section_list_move_topic(p_section, p_section_dest, p_article->aid)) < 0)
605     {
606 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",
607     p_section->sid, p_section_dest->sid, p_article->aid, ret);
608     }
609     // release lock of dest section
610     if (section_list_rw_unlock(p_section_dest) < 0)
611     {
612     log_error("section_list_rw_unlock(sid = %d) error\n", p_section_dest);
613     ret = -1;
614 sysadm 1.5 }
615     }
616     break;
617     case 'E': // Set article as excerption
618     p_article->excerption = 1;
619     break;
620     case 'O': // Unset article as excerption
621     p_article->excerption = 0;
622     break;
623     case 'F': // Set article on top
624     case 'V': // Unset article on top
625 sysadm 1.32 p_article->ontop = (row[2][0] == 'F' ? 1 : 0);
626     if (section_list_update_article_ontop(p_section, p_article) < 0)
627     {
628     log_error("section_list_update_article_ontop(sid=%d, aid=%d) error\n",
629     p_section->sid, p_article->aid);
630     }
631 sysadm 1.5 break;
632     case 'Z': // Set article as trnasship
633     p_article->transship = 1;
634     break;
635     default:
636     // log_error("Operation type=%s unknown, mid=%s\n", row[2], row[0]);
637     break;
638     }
639    
640     if (ret < 0)
641     {
642     break;
643     }
644    
645     // Update MID with last successfully proceeded article_op_log
646     last_article_op_log_mid = atoi(row[0]);
647 sysadm 1.9
648     op_count++;
649 sysadm 1.5 }
650    
651     // release lock of last section
652     if (last_sid != 0)
653     {
654     if ((ret = section_list_rw_unlock(p_section)) < 0)
655     {
656     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
657     }
658     }
659    
660 sysadm 1.23 cleanup:
661     mysql_free_result(rs2);
662 sysadm 1.5 mysql_free_result(rs);
663     mysql_close(db);
664    
665 sysadm 1.9 return (ret < 0 ? ret : op_count);
666 sysadm 1.5 }
667    
668 sysadm 1.39 static void section_list_ex_menu_set_cleanup(void)
669     {
670     int i;
671    
672     for (i = 0; i < p_section_list_pool->section_count; i++)
673     {
674     if (p_section_list_pool->sections[i].ex_menu_tm > 0)
675     {
676     unload_menu(&(p_section_list_pool->sections[i].ex_menu_set));
677     }
678     }
679     }
680    
681 sysadm 1.4 int section_list_loader_launch(void)
682     {
683 sysadm 1.34 struct sigaction act = {0};
684 sysadm 1.4 int pid;
685     int ret;
686     int32_t last_aid;
687     int article_count;
688     int load_count;
689 sysadm 1.5 int last_mid;
690 sysadm 1.4 int i;
691    
692     if (section_list_loader_pid != 0)
693     {
694     log_error("section_list_loader already running, pid = %d\n", section_list_loader_pid);
695     return -2;
696     }
697    
698     pid = fork();
699    
700     if (pid > 0) // Parent process
701     {
702     SYS_child_process_count++;
703     section_list_loader_pid = pid;
704 sysadm 1.18 log_common("Section list loader process (pid = %d) start\n", pid);
705 sysadm 1.4 return 0;
706     }
707     else if (pid < 0) // Error
708     {
709     log_error("fork() error (%d)\n", errno);
710     return -1;
711     }
712    
713     // Child process
714     SYS_child_process_count = 0;
715    
716     // Detach menu in shared memory
717 sysadm 1.36 detach_menu_shm(&bbs_menu);
718 sysadm 1.4
719 sysadm 1.34 // Set signal handler
720     act.sa_handler = SIG_DFL;
721 sysadm 1.38 if (sigaction(SIGHUP, &act, NULL) == -1)
722     {
723     log_error("set signal action of SIGHUP error: %d\n", errno);
724     }
725     act.sa_handler = SIG_DFL;
726 sysadm 1.34 if (sigaction(SIGCHLD, &act, NULL) == -1)
727     {
728     log_error("set signal action of SIGCHLD error: %d\n", errno);
729     }
730    
731 sysadm 1.4 // Do section data loader periodically
732     while (!SYS_server_exit)
733     {
734 sysadm 1.38 if (SYS_conf_reload)
735 sysadm 1.4 {
736 sysadm 1.38 SYS_conf_reload = 0;
737 sysadm 1.4
738     // Load section config
739 sysadm 1.38 if (load_section_config_from_db(0) < 0)
740 sysadm 1.4 {
741 sysadm 1.38 log_error("load_section_config_from_db(0) error\n");
742 sysadm 1.4 }
743     else
744     {
745 sysadm 1.27 log_common("Reload section config successfully\n");
746 sysadm 1.4 }
747     }
748    
749     // Load section articles
750     article_count = article_block_article_count();
751    
752 sysadm 1.9 do
753 sysadm 1.4 {
754 sysadm 1.9 last_aid = article_block_last_aid();
755 sysadm 1.4
756 sysadm 1.9 if ((ret = append_articles_from_db(last_aid + 1, 0, LOAD_ARTICLE_COUNT_LIMIT)) < 0)
757 sysadm 1.4 {
758 sysadm 1.9 log_error("append_articles_from_db(%d, 0, %d) error\n", last_aid + 1, LOAD_ARTICLE_COUNT_LIMIT);
759    
760     if (ret == ERR_UNKNOWN_SECTION)
761     {
762 sysadm 1.38 SYS_conf_reload = 1; // Force reload section_list
763 sysadm 1.9 }
764 sysadm 1.4 }
765 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
766 sysadm 1.5
767     load_count = article_block_article_count() - article_count;
768     if (load_count > 0)
769     {
770 sysadm 1.17 log_common("Incrementally load %d articles, last_aid = %d\n", load_count, article_block_last_aid());
771 sysadm 1.5 }
772    
773 sysadm 1.38 if (SYS_conf_reload)
774 sysadm 1.5 {
775     continue;
776     }
777    
778     // Load article_op log
779     last_mid = last_article_op_log_mid;
780    
781 sysadm 1.9 do
782 sysadm 1.4 {
783 sysadm 1.9 if ((ret = apply_article_op_log_from_db(LOAD_ARTICLE_COUNT_LIMIT)) < 0)
784     {
785     log_error("apply_article_op_log_from_db() error\n");
786 sysadm 1.4
787 sysadm 1.9 if (ret == ERR_UNKNOWN_SECTION)
788     {
789 sysadm 1.38 SYS_conf_reload = 1; // Force reload section_list
790 sysadm 1.9 }
791 sysadm 1.4 }
792 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
793 sysadm 1.4
794 sysadm 1.5 if (last_article_op_log_mid > last_mid)
795     {
796 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);
797 sysadm 1.5 }
798    
799 sysadm 1.38 if (SYS_conf_reload)
800 sysadm 1.5 {
801     continue;
802     }
803    
804 sysadm 1.38 for (i = 0; i < BBS_section_list_load_interval && !SYS_server_exit && !SYS_conf_reload; i++)
805 sysadm 1.5 {
806     sleep(1);
807 sysadm 1.4 }
808     }
809    
810     // Child process exit
811    
812 sysadm 1.31 article_cache_cleanup();
813    
814 sysadm 1.34 // gen_ex_menu cleanup
815     section_list_ex_menu_set_cleanup();
816 sysadm 1.37
817 sysadm 1.4 // Detach data pools shm
818     detach_section_list_shm();
819     detach_article_block_shm();
820     detach_trie_dict_shm();
821    
822 sysadm 1.17 log_common("Section list loader process exit normally\n");
823 sysadm 1.4 log_end();
824    
825     section_list_loader_pid = 0;
826    
827     _exit(0);
828    
829     return 0;
830     }
831    
832 sysadm 1.33 int query_section_articles(SECTION_LIST *p_section, int page_id, ARTICLE *p_articles[],
833     int *p_article_count, int *p_page_count, int *p_ontop_start_offset)
834 sysadm 1.7 {
835     ARTICLE *p_article;
836     ARTICLE *p_next_page_first_article;
837     int ret = 0;
838 sysadm 1.32 int i;
839 sysadm 1.7
840 sysadm 1.33 if (p_section == NULL || p_articles == NULL || p_article_count == NULL || p_page_count == NULL || p_ontop_start_offset == NULL)
841 sysadm 1.7 {
842 sysadm 1.34 log_error("NULL pointer error\n");
843 sysadm 1.7 return -1;
844     }
845    
846     // acquire lock of section
847     if ((ret = section_list_rd_lock(p_section)) < 0)
848     {
849     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
850     return -2;
851     }
852    
853 sysadm 1.32 *p_page_count = section_list_page_count_with_ontop(p_section);
854     *p_article_count = 0;
855 sysadm 1.33 *p_ontop_start_offset = BBS_article_limit_per_page;
856 sysadm 1.10
857 sysadm 1.9 if (p_section->visible_article_count == 0)
858     {
859 sysadm 1.32 // empty section
860 sysadm 1.9 }
861 sysadm 1.32 else if (page_id < 0 || page_id >= *p_page_count)
862 sysadm 1.7 {
863 sysadm 1.32 log_error("Invalid page_id=%d, not in range [0, %d)\n", page_id, *p_page_count);
864 sysadm 1.7 ret = -3;
865     }
866     else
867     {
868     ret = page_id;
869    
870 sysadm 1.32 if (page_id <= p_section->page_count - 1)
871 sysadm 1.7 {
872 sysadm 1.32 p_article = p_section->p_page_first_article[page_id];
873     p_next_page_first_article =
874     (page_id == p_section->page_count - 1 ? p_section->p_article_head : p_section->p_page_first_article[page_id + 1]);
875    
876     do
877     {
878     if (p_article->visible)
879     {
880     p_articles[*p_article_count] = p_article;
881     (*p_article_count)++;
882     }
883     p_article = p_article->p_next;
884     } while (p_article != p_next_page_first_article && (*p_article_count) <= BBS_article_limit_per_page);
885    
886     if (*p_article_count != (page_id < p_section->page_count - 1 ? BBS_article_limit_per_page : p_section->last_page_visible_article_count))
887 sysadm 1.7 {
888 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);
889 sysadm 1.7 }
890 sysadm 1.32 }
891 sysadm 1.8
892 sysadm 1.33 *p_ontop_start_offset = *p_article_count;
893    
894 sysadm 1.32 // Append ontop articles
895     if (page_id >= p_section->page_count - 1)
896 sysadm 1.8 {
897 sysadm 1.32 i = (page_id == p_section->page_count - 1
898     ? 0
899     : (page_id - p_section->page_count + 1) * BBS_article_limit_per_page - p_section->last_page_visible_article_count);
900     while (*p_article_count < BBS_article_limit_per_page && i < p_section->ontop_article_count)
901     {
902     p_articles[(*p_article_count)++] = p_section->p_ontop_articles[i++];
903     }
904 sysadm 1.8 }
905 sysadm 1.7 }
906    
907     // release lock of section
908 sysadm 1.8 if (section_list_rd_unlock(p_section) < 0)
909 sysadm 1.7 {
910     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
911     ret = -2;
912     }
913    
914     return ret;
915     }
916 sysadm 1.14
917 sysadm 1.24 int locate_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, int direction, int step,
918 sysadm 1.15 int *p_page_id, int *p_visible_offset, int *p_article_count)
919 sysadm 1.14 {
920 sysadm 1.15 const ARTICLE *p_article = NULL;
921 sysadm 1.40 const ARTICLE *p_article_last = NULL;
922 sysadm 1.15 ARTICLE *p_tmp;
923 sysadm 1.14 int32_t aid = 0;
924 sysadm 1.24 int page_id = 0;
925     int offset = 0;
926 sysadm 1.14 int ret = 0;
927 sysadm 1.15 int i;
928 sysadm 1.14
929 sysadm 1.15 if (p_section == NULL || p_article_cur == NULL || p_page_id == NULL || p_visible_offset == NULL || p_article_count == NULL)
930 sysadm 1.14 {
931 sysadm 1.34 log_error("NULL pointer error\n");
932 sysadm 1.14 return -1;
933     }
934    
935     // acquire lock of section
936     if ((ret = section_list_rd_lock(p_section)) < 0)
937     {
938     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
939     return -2;
940     }
941    
942     if (direction == 0)
943     {
944     aid = p_article_cur->aid;
945     }
946     else if (direction == 1)
947     {
948 sysadm 1.40 for (p_article = p_article_cur, p_article_last = p_article_cur;
949     step > 0 && p_article->p_topic_next->aid > p_article_cur->aid;
950     p_article = p_article->p_topic_next)
951 sysadm 1.14 {
952 sysadm 1.24 if (p_article->visible)
953     {
954     step--;
955 sysadm 1.40 p_article_last = p_article;
956 sysadm 1.24 }
957     }
958 sysadm 1.40 if (!p_article->visible)
959     {
960     p_article = p_article_last;
961     }
962 sysadm 1.15
963 sysadm 1.25 aid = (p_article->aid > p_article_cur->aid && p_article->visible ? p_article->aid : 0);
964 sysadm 1.14 }
965     else if (direction == -1)
966     {
967 sysadm 1.40 for (p_article = p_article_cur, p_article_last = p_article_cur;
968     step > 0 && p_article->p_topic_prior->aid < p_article_cur->aid;
969     p_article = p_article->p_topic_prior)
970 sysadm 1.14 {
971 sysadm 1.24 if (p_article->visible)
972     {
973     step--;
974 sysadm 1.40 p_article_last = p_article;
975 sysadm 1.24 }
976     }
977 sysadm 1.40 if (!p_article->visible)
978     {
979     p_article = p_article_last;
980     }
981 sysadm 1.15
982 sysadm 1.25 aid = (p_article->aid < p_article_cur->aid && p_article->visible ? p_article->aid : 0);
983 sysadm 1.14 }
984    
985 sysadm 1.15 p_article = NULL;
986    
987 sysadm 1.14 if (aid > 0)
988     {
989 sysadm 1.15 p_article = section_list_find_article_with_offset(p_section, aid, &page_id, &offset, &p_tmp);
990 sysadm 1.14 if (p_article != NULL)
991     {
992 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);
993    
994     p_article = p_section->p_page_first_article[page_id];
995 sysadm 1.25 for (i = 0; i < *p_article_count && p_article != NULL;)
996 sysadm 1.15 {
997     if (p_article->visible)
998     {
999     if (p_article->aid == aid)
1000     {
1001     *p_page_id = page_id;
1002     *p_visible_offset = i;
1003     break;
1004     }
1005     i++;
1006     if (i >= *p_article_count)
1007     {
1008     log_error("Visible article (aid=%d) not found in page %d\n", aid, page_id);
1009     p_article = NULL;
1010 sysadm 1.25 break;
1011 sysadm 1.15 }
1012     }
1013     p_article = p_article->p_next;
1014     }
1015 sysadm 1.32
1016     // Include ontop articles
1017     *p_article_count = section_list_page_article_count_with_ontop(p_section, page_id);
1018 sysadm 1.14 }
1019     }
1020    
1021     // release lock of section
1022     if (section_list_rd_unlock(p_section) < 0)
1023     {
1024     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1025     ret = -2;
1026     }
1027    
1028     return (ret < 0 ? ret : (p_article == NULL ? 0 : 1));
1029     }
1030 sysadm 1.34
1031     int get_section_ex_menu_set(SECTION_LIST *p_section, MENU_SET *p_ex_menu_set)
1032     {
1033     int ret = 0;
1034    
1035     if (p_section == NULL || p_ex_menu_set == NULL)
1036     {
1037     log_error("NULL pointer error\n");
1038     return -1;
1039     }
1040    
1041     // acquire lock of section
1042     if ((ret = section_list_rd_lock(p_section)) < 0)
1043     {
1044     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1045     return -2;
1046     }
1047    
1048     memcpy(p_ex_menu_set, &(p_section->ex_menu_set), sizeof(p_section->ex_menu_set));
1049    
1050     // release lock of section
1051     if (section_list_rd_unlock(p_section) < 0)
1052     {
1053     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1054     ret = -2;
1055     }
1056    
1057     return ret;
1058     }
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