/[LeafOK_CVS]/lbbs/src/section_list_loader.c
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Revision 1.34 - (hide annotations)
Tue Jun 24 10:01:24 2025 UTC (8 months, 3 weeks ago) by sysadm
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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 1.34 int load_section_config_from_db(int reload)
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 1.34 char ex_menu_conf[FILE_PATH_LEN];
43     MENU_SET ex_menu_set_new;
44 sysadm 1.23 int ret = 0;
45 sysadm 1.1
46 sysadm 1.2 db = db_open();
47     if (db == NULL)
48     {
49     log_error("db_open() error: %s\n", mysql_error(db));
50 sysadm 1.23 ret = -1;
51     goto cleanup;
52 sysadm 1.2 }
53    
54 sysadm 1.1 snprintf(sql, sizeof(sql),
55 sysadm 1.2 "SELECT section_config.SID, sname, section_config.title, section_config.CID, "
56 sysadm 1.34 "read_user_level, write_user_level, section_config.enable * section_class.enable AS enable, "
57     "UNIX_TIMESTAMP(ex_menu_tm) AS ex_menu_tm "
58 sysadm 1.2 "FROM section_config INNER JOIN section_class ON section_config.CID = section_class.CID "
59 sysadm 1.1 "ORDER BY section_config.SID");
60    
61     if (mysql_query(db, sql) != 0)
62     {
63     log_error("Query section_list error: %s\n", mysql_error(db));
64 sysadm 1.23 ret = -2;
65     goto cleanup;
66 sysadm 1.1 }
67     if ((rs = mysql_store_result(db)) == NULL)
68     {
69     log_error("Get section_list data failed\n");
70 sysadm 1.23 ret = -2;
71     goto cleanup;
72 sysadm 1.1 }
73 sysadm 1.2
74     ret = 0;
75 sysadm 1.1 while ((row = mysql_fetch_row(rs)))
76     {
77     sid = atoi(row[0]);
78    
79     // Query section master
80     snprintf(sql, sizeof(sql),
81     "SELECT username FROM section_master "
82     "INNER JOIN user_list ON section_master.UID = user_list.UID "
83     "WHERE SID = %d AND section_master.enable AND (NOW() BETWEEN begin_dt AND end_dt) "
84 sysadm 1.8 "ORDER BY major DESC, begin_dt ASC LIMIT 3",
85 sysadm 1.1 sid);
86    
87     if (mysql_query(db, sql) != 0)
88     {
89     log_error("Query section_master error: %s\n", mysql_error(db));
90 sysadm 1.2 ret = -3;
91     break;
92 sysadm 1.1 }
93     if ((rs2 = mysql_store_result(db)) == NULL)
94     {
95     log_error("Get section_master data failed\n");
96 sysadm 1.2 ret = -3;
97     break;
98 sysadm 1.1 }
99 sysadm 1.8
100     master_list[0] = '\0';
101     while ((row2 = mysql_fetch_row(rs2)))
102 sysadm 1.1 {
103 sysadm 1.8 strncat(master_list, row2[0], sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
104     strncat(master_list, " ", sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
105 sysadm 1.1 }
106     mysql_free_result(rs2);
107 sysadm 1.23 rs2 = NULL;
108 sysadm 1.1
109     p_section = section_list_find_by_sid(sid);
110    
111     if (p_section == NULL)
112     {
113 sysadm 1.8 p_section = section_list_create(sid, row[1], row[2], master_list);
114 sysadm 1.1 if (p_section == NULL)
115     {
116 sysadm 1.2 log_error("section_list_create() error: load new section sid = %d sname = %s\n", sid, row[1]);
117     ret = -4;
118 sysadm 1.1 break;
119     }
120    
121     // acquire rw lock
122     ret = section_list_rw_lock(p_section);
123     if (ret < 0)
124     {
125     break;
126     }
127     }
128     else
129     {
130     // acquire rw lock
131     ret = section_list_rw_lock(p_section);
132     if (ret < 0)
133     {
134     break;
135     }
136    
137 sysadm 1.28 strncpy(p_section->sname, row[0], sizeof(p_section->sname) - 1);
138 sysadm 1.1 p_section->sname[sizeof(p_section->sname) - 1] = '\0';
139     strncpy(p_section->stitle, row[1], sizeof(p_section->stitle) - 1);
140     p_section->stitle[sizeof(p_section->stitle) - 1] = '\0';
141 sysadm 1.8 strncpy(p_section->master_list, master_list, sizeof(p_section->master_list) - 1);
142     p_section->master_list[sizeof(p_section->master_list) - 1] = '\0';
143 sysadm 1.1 }
144    
145     p_section->class_id = atoi(row[3]);
146     p_section->read_user_level = atoi(row[4]);
147     p_section->write_user_level = atoi(row[5]);
148     p_section->enable = (int8_t)atoi(row[6]);
149    
150 sysadm 1.34 // Update gen_ex menu set
151     if (reload && p_section->enable && atoi(row[7]) > p_section->ex_menu_tm)
152     {
153     snprintf(ex_menu_conf, sizeof(ex_menu_conf), "%s/%d", VAR_GEN_EX_MENU_DIR, p_section->sid);
154    
155     ret = load_menu(&ex_menu_set_new, ex_menu_conf);
156     if (ret < 0)
157     {
158     log_error("load_menu(%s) error: %d\n", ex_menu_conf, ret);
159     unload_menu(&ex_menu_set_new);
160     }
161     else
162     {
163     if (p_section->ex_menu_tm > 0)
164     {
165     unload_menu(&(p_section->ex_menu_set));
166     }
167    
168     ex_menu_set_new.allow_exit = 1; // Allow exit menu
169     memcpy(&(p_section->ex_menu_set), &ex_menu_set_new, sizeof(ex_menu_set_new));
170     set_menu_shm_readonly(&(p_section->ex_menu_set));
171    
172     p_section->ex_menu_tm = atol(row[7]);
173     #ifdef _DEBUG
174     log_common("Loaded gen_ex_menu of section %d [%s]\n", p_section->sid, p_section->sname);
175     #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 1.4 int section_list_loader_launch(void)
669     {
670 sysadm 1.34 struct sigaction act = {0};
671 sysadm 1.4 int pid;
672     int ret;
673     int32_t last_aid;
674     int article_count;
675     int load_count;
676 sysadm 1.5 int last_mid;
677 sysadm 1.4 int i;
678    
679     if (section_list_loader_pid != 0)
680     {
681     log_error("section_list_loader already running, pid = %d\n", section_list_loader_pid);
682     return -2;
683     }
684    
685     pid = fork();
686    
687     if (pid > 0) // Parent process
688     {
689     SYS_child_process_count++;
690     section_list_loader_pid = pid;
691 sysadm 1.18 log_common("Section list loader process (pid = %d) start\n", pid);
692 sysadm 1.4 return 0;
693     }
694     else if (pid < 0) // Error
695     {
696     log_error("fork() error (%d)\n", errno);
697     return -1;
698     }
699    
700     // Child process
701     SYS_child_process_count = 0;
702    
703     // Detach menu in shared memory
704     detach_menu_shm(p_bbs_menu);
705     free(p_bbs_menu);
706     p_bbs_menu = NULL;
707    
708 sysadm 1.34 // Set signal handler
709     act.sa_handler = SIG_DFL;
710     if (sigaction(SIGCHLD, &act, NULL) == -1)
711     {
712     log_error("set signal action of SIGCHLD error: %d\n", errno);
713     }
714    
715     // Force reload to load gen_ex_menu
716     SYS_section_list_reload = 1;
717    
718 sysadm 1.4 // Do section data loader periodically
719     while (!SYS_server_exit)
720     {
721     if (SYS_section_list_reload)
722     {
723     SYS_section_list_reload = 0;
724    
725     // Load section config
726 sysadm 1.34 if (load_section_config_from_db(1) < 0)
727 sysadm 1.4 {
728     log_error("load_section_config_from_db() error\n");
729     }
730     else
731     {
732 sysadm 1.27 log_common("Reload section config successfully\n");
733 sysadm 1.4 }
734     }
735    
736     // Load section articles
737     article_count = article_block_article_count();
738    
739 sysadm 1.9 do
740 sysadm 1.4 {
741 sysadm 1.9 last_aid = article_block_last_aid();
742 sysadm 1.4
743 sysadm 1.9 if ((ret = append_articles_from_db(last_aid + 1, 0, LOAD_ARTICLE_COUNT_LIMIT)) < 0)
744 sysadm 1.4 {
745 sysadm 1.9 log_error("append_articles_from_db(%d, 0, %d) error\n", last_aid + 1, LOAD_ARTICLE_COUNT_LIMIT);
746    
747     if (ret == ERR_UNKNOWN_SECTION)
748     {
749     SYS_section_list_reload = 1; // Force reload section_list
750     }
751 sysadm 1.4 }
752 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
753 sysadm 1.5
754     load_count = article_block_article_count() - article_count;
755     if (load_count > 0)
756     {
757 sysadm 1.17 log_common("Incrementally load %d articles, last_aid = %d\n", load_count, article_block_last_aid());
758 sysadm 1.5 }
759    
760     if (SYS_section_list_reload)
761     {
762     continue;
763     }
764    
765     // Load article_op log
766     last_mid = last_article_op_log_mid;
767    
768 sysadm 1.9 do
769 sysadm 1.4 {
770 sysadm 1.9 if ((ret = apply_article_op_log_from_db(LOAD_ARTICLE_COUNT_LIMIT)) < 0)
771     {
772     log_error("apply_article_op_log_from_db() error\n");
773 sysadm 1.4
774 sysadm 1.9 if (ret == ERR_UNKNOWN_SECTION)
775     {
776     SYS_section_list_reload = 1; // Force reload section_list
777     }
778 sysadm 1.4 }
779 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
780 sysadm 1.4
781 sysadm 1.5 if (last_article_op_log_mid > last_mid)
782     {
783 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);
784 sysadm 1.5 }
785    
786     if (SYS_section_list_reload)
787     {
788     continue;
789     }
790    
791 sysadm 1.19 for (i = 0; i < BBS_section_list_load_interval && !SYS_server_exit && !SYS_section_list_reload; i++)
792 sysadm 1.5 {
793     sleep(1);
794 sysadm 1.4 }
795     }
796    
797     // Child process exit
798    
799 sysadm 1.31 article_cache_cleanup();
800    
801 sysadm 1.34 // gen_ex_menu cleanup
802     section_list_ex_menu_set_cleanup();
803    
804 sysadm 1.4 // Detach data pools shm
805     detach_section_list_shm();
806     detach_article_block_shm();
807     detach_trie_dict_shm();
808    
809 sysadm 1.17 log_common("Section list loader process exit normally\n");
810 sysadm 1.4 log_end();
811    
812     section_list_loader_pid = 0;
813    
814     _exit(0);
815    
816     return 0;
817     }
818    
819     int section_list_loader_reload(void)
820     {
821     if (section_list_loader_pid == 0)
822     {
823     log_error("section_list_loader not running\n");
824     return -2;
825     }
826    
827     if (kill(section_list_loader_pid, SIGHUP) < 0)
828     {
829     log_error("Send SIGTERM signal failed (%d)\n", errno);
830     return -1;
831     }
832    
833     return 0;
834     }
835 sysadm 1.7
836 sysadm 1.33 int query_section_articles(SECTION_LIST *p_section, int page_id, ARTICLE *p_articles[],
837     int *p_article_count, int *p_page_count, int *p_ontop_start_offset)
838 sysadm 1.7 {
839     ARTICLE *p_article;
840     ARTICLE *p_next_page_first_article;
841     int ret = 0;
842 sysadm 1.32 int i;
843 sysadm 1.7
844 sysadm 1.33 if (p_section == NULL || p_articles == NULL || p_article_count == NULL || p_page_count == NULL || p_ontop_start_offset == NULL)
845 sysadm 1.7 {
846 sysadm 1.34 log_error("NULL pointer error\n");
847 sysadm 1.7 return -1;
848     }
849    
850     // acquire lock of section
851     if ((ret = section_list_rd_lock(p_section)) < 0)
852     {
853     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
854     return -2;
855     }
856    
857 sysadm 1.32 *p_page_count = section_list_page_count_with_ontop(p_section);
858     *p_article_count = 0;
859 sysadm 1.33 *p_ontop_start_offset = BBS_article_limit_per_page;
860 sysadm 1.10
861 sysadm 1.9 if (p_section->visible_article_count == 0)
862     {
863 sysadm 1.32 // empty section
864 sysadm 1.9 }
865 sysadm 1.32 else if (page_id < 0 || page_id >= *p_page_count)
866 sysadm 1.7 {
867 sysadm 1.32 log_error("Invalid page_id=%d, not in range [0, %d)\n", page_id, *p_page_count);
868 sysadm 1.7 ret = -3;
869     }
870     else
871     {
872     ret = page_id;
873    
874 sysadm 1.32 if (page_id <= p_section->page_count - 1)
875 sysadm 1.7 {
876 sysadm 1.32 p_article = p_section->p_page_first_article[page_id];
877     p_next_page_first_article =
878     (page_id == p_section->page_count - 1 ? p_section->p_article_head : p_section->p_page_first_article[page_id + 1]);
879    
880     do
881     {
882     if (p_article->visible)
883     {
884     p_articles[*p_article_count] = p_article;
885     (*p_article_count)++;
886     }
887     p_article = p_article->p_next;
888     } while (p_article != p_next_page_first_article && (*p_article_count) <= BBS_article_limit_per_page);
889    
890     if (*p_article_count != (page_id < p_section->page_count - 1 ? BBS_article_limit_per_page : p_section->last_page_visible_article_count))
891 sysadm 1.7 {
892 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);
893 sysadm 1.7 }
894 sysadm 1.32 }
895 sysadm 1.8
896 sysadm 1.33 *p_ontop_start_offset = *p_article_count;
897    
898 sysadm 1.32 // Append ontop articles
899     if (page_id >= p_section->page_count - 1)
900 sysadm 1.8 {
901 sysadm 1.32 i = (page_id == p_section->page_count - 1
902     ? 0
903     : (page_id - p_section->page_count + 1) * BBS_article_limit_per_page - p_section->last_page_visible_article_count);
904     while (*p_article_count < BBS_article_limit_per_page && i < p_section->ontop_article_count)
905     {
906     p_articles[(*p_article_count)++] = p_section->p_ontop_articles[i++];
907     }
908 sysadm 1.8 }
909 sysadm 1.7 }
910    
911     // release lock of section
912 sysadm 1.8 if (section_list_rd_unlock(p_section) < 0)
913 sysadm 1.7 {
914     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
915     ret = -2;
916     }
917    
918     return ret;
919     }
920 sysadm 1.14
921 sysadm 1.24 int locate_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, int direction, int step,
922 sysadm 1.15 int *p_page_id, int *p_visible_offset, int *p_article_count)
923 sysadm 1.14 {
924 sysadm 1.15 const ARTICLE *p_article = NULL;
925     ARTICLE *p_tmp;
926 sysadm 1.14 int32_t aid = 0;
927 sysadm 1.24 int page_id = 0;
928     int offset = 0;
929 sysadm 1.14 int ret = 0;
930 sysadm 1.15 int i;
931 sysadm 1.14
932 sysadm 1.15 if (p_section == NULL || p_article_cur == NULL || p_page_id == NULL || p_visible_offset == NULL || p_article_count == NULL)
933 sysadm 1.14 {
934 sysadm 1.34 log_error("NULL pointer error\n");
935 sysadm 1.14 return -1;
936     }
937    
938     // acquire lock of section
939     if ((ret = section_list_rd_lock(p_section)) < 0)
940     {
941     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
942     return -2;
943     }
944    
945     if (direction == 0)
946     {
947     aid = p_article_cur->aid;
948     }
949     else if (direction == 1)
950     {
951 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)
952 sysadm 1.14 {
953 sysadm 1.24 if (p_article->visible)
954     {
955     step--;
956     }
957     }
958 sysadm 1.15
959 sysadm 1.25 aid = (p_article->aid > p_article_cur->aid && p_article->visible ? p_article->aid : 0);
960 sysadm 1.14 }
961     else if (direction == -1)
962     {
963 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)
964 sysadm 1.14 {
965 sysadm 1.24 if (p_article->visible)
966     {
967     step--;
968     }
969     }
970 sysadm 1.15
971 sysadm 1.25 aid = (p_article->aid < p_article_cur->aid && p_article->visible ? p_article->aid : 0);
972 sysadm 1.14 }
973    
974 sysadm 1.15 p_article = NULL;
975    
976 sysadm 1.14 if (aid > 0)
977     {
978 sysadm 1.15 p_article = section_list_find_article_with_offset(p_section, aid, &page_id, &offset, &p_tmp);
979 sysadm 1.14 if (p_article != NULL)
980     {
981 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);
982    
983     p_article = p_section->p_page_first_article[page_id];
984 sysadm 1.25 for (i = 0; i < *p_article_count && p_article != NULL;)
985 sysadm 1.15 {
986     if (p_article->visible)
987     {
988     if (p_article->aid == aid)
989     {
990     *p_page_id = page_id;
991     *p_visible_offset = i;
992     break;
993     }
994     i++;
995     if (i >= *p_article_count)
996     {
997     log_error("Visible article (aid=%d) not found in page %d\n", aid, page_id);
998     p_article = NULL;
999 sysadm 1.25 break;
1000 sysadm 1.15 }
1001     }
1002     p_article = p_article->p_next;
1003     }
1004 sysadm 1.32
1005     // Include ontop articles
1006     *p_article_count = section_list_page_article_count_with_ontop(p_section, page_id);
1007 sysadm 1.14 }
1008     }
1009    
1010     // release lock of section
1011     if (section_list_rd_unlock(p_section) < 0)
1012     {
1013     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1014     ret = -2;
1015     }
1016    
1017     return (ret < 0 ? ret : (p_article == NULL ? 0 : 1));
1018     }
1019 sysadm 1.34
1020     int get_section_ex_menu_set(SECTION_LIST *p_section, MENU_SET *p_ex_menu_set)
1021     {
1022     int ret = 0;
1023    
1024     if (p_section == NULL || p_ex_menu_set == NULL)
1025     {
1026     log_error("NULL pointer error\n");
1027     return -1;
1028     }
1029    
1030     // acquire lock of section
1031     if ((ret = section_list_rd_lock(p_section)) < 0)
1032     {
1033     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1034     return -2;
1035     }
1036    
1037     memcpy(p_ex_menu_set, &(p_section->ex_menu_set), sizeof(p_section->ex_menu_set));
1038    
1039     // release lock of section
1040     if (section_list_rd_unlock(p_section) < 0)
1041     {
1042     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1043     ret = -2;
1044     }
1045    
1046     return ret;
1047     }
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