/[LeafOK_CVS]/lbbs/src/section_list_loader.c
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Sat Oct 4 03:21:59 2025 UTC (5 months, 1 week 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 1.44 #include "article_view_log.h"
19 sysadm 1.19 #include "bbs.h"
20 sysadm 1.30 #include "database.h"
21 sysadm 1.39 #include "ip_mask.h"
22 sysadm 1.1 #include "log.h"
23 sysadm 1.4 #include "menu.h"
24 sysadm 1.30 #include "section_list_loader.h"
25 sysadm 1.1 #include <errno.h>
26 sysadm 1.4 #include <signal.h>
27 sysadm 1.29 #include <stdio.h>
28 sysadm 1.1 #include <stdlib.h>
29 sysadm 1.22 #include <string.h>
30 sysadm 1.4 #include <unistd.h>
31    
32 sysadm 1.5 int section_list_loader_pid;
33     int last_article_op_log_mid;
34 sysadm 1.1
35 sysadm 1.38 int load_section_config_from_db(int update_gen_ex)
36 sysadm 1.1 {
37 sysadm 1.23 MYSQL *db = NULL;
38     MYSQL_RES *rs = NULL, *rs2 = NULL;
39 sysadm 1.1 MYSQL_ROW row, row2;
40     char sql[SQL_BUFFER_LEN];
41     int32_t sid;
42 sysadm 1.8 char master_list[(BBS_username_max_len + 1) * 3 + 1];
43 sysadm 1.1 SECTION_LIST *p_section;
44 sysadm 1.34 char ex_menu_conf[FILE_PATH_LEN];
45     MENU_SET ex_menu_set_new;
46 sysadm 1.23 int ret = 0;
47 sysadm 1.1
48 sysadm 1.2 db = db_open();
49     if (db == NULL)
50     {
51     log_error("db_open() error: %s\n", mysql_error(db));
52 sysadm 1.23 ret = -1;
53     goto cleanup;
54 sysadm 1.2 }
55    
56 sysadm 1.1 snprintf(sql, sizeof(sql),
57 sysadm 1.2 "SELECT section_config.SID, sname, section_config.title, section_config.CID, "
58 sysadm 1.34 "read_user_level, write_user_level, section_config.enable * section_class.enable AS enable, "
59     "UNIX_TIMESTAMP(ex_menu_tm) AS ex_menu_tm "
60 sysadm 1.2 "FROM section_config INNER JOIN section_class ON section_config.CID = section_class.CID "
61 sysadm 1.1 "ORDER BY section_config.SID");
62    
63     if (mysql_query(db, sql) != 0)
64     {
65     log_error("Query section_list error: %s\n", mysql_error(db));
66 sysadm 1.23 ret = -2;
67     goto cleanup;
68 sysadm 1.1 }
69     if ((rs = mysql_store_result(db)) == NULL)
70     {
71     log_error("Get section_list data failed\n");
72 sysadm 1.23 ret = -2;
73     goto cleanup;
74 sysadm 1.1 }
75 sysadm 1.2
76     ret = 0;
77 sysadm 1.1 while ((row = mysql_fetch_row(rs)))
78     {
79     sid = atoi(row[0]);
80    
81     // Query section master
82     snprintf(sql, sizeof(sql),
83     "SELECT username FROM section_master "
84     "INNER JOIN user_list ON section_master.UID = user_list.UID "
85     "WHERE SID = %d AND section_master.enable AND (NOW() BETWEEN begin_dt AND end_dt) "
86 sysadm 1.8 "ORDER BY major DESC, begin_dt ASC LIMIT 3",
87 sysadm 1.1 sid);
88    
89     if (mysql_query(db, sql) != 0)
90     {
91     log_error("Query section_master error: %s\n", mysql_error(db));
92 sysadm 1.2 ret = -3;
93     break;
94 sysadm 1.1 }
95     if ((rs2 = mysql_store_result(db)) == NULL)
96     {
97     log_error("Get section_master data failed\n");
98 sysadm 1.2 ret = -3;
99     break;
100 sysadm 1.1 }
101 sysadm 1.8
102     master_list[0] = '\0';
103     while ((row2 = mysql_fetch_row(rs2)))
104 sysadm 1.1 {
105 sysadm 1.8 strncat(master_list, row2[0], sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
106     strncat(master_list, " ", sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
107 sysadm 1.1 }
108     mysql_free_result(rs2);
109 sysadm 1.23 rs2 = NULL;
110 sysadm 1.1
111     p_section = section_list_find_by_sid(sid);
112    
113     if (p_section == NULL)
114     {
115 sysadm 1.8 p_section = section_list_create(sid, row[1], row[2], master_list);
116 sysadm 1.1 if (p_section == NULL)
117     {
118 sysadm 1.2 log_error("section_list_create() error: load new section sid = %d sname = %s\n", sid, row[1]);
119     ret = -4;
120 sysadm 1.1 break;
121     }
122    
123     // acquire rw lock
124     ret = section_list_rw_lock(p_section);
125     if (ret < 0)
126     {
127     break;
128     }
129     }
130     else
131     {
132     // acquire rw lock
133     ret = section_list_rw_lock(p_section);
134     if (ret < 0)
135     {
136     break;
137     }
138    
139 sysadm 1.35 strncpy(p_section->sname, row[1], sizeof(p_section->sname) - 1);
140 sysadm 1.1 p_section->sname[sizeof(p_section->sname) - 1] = '\0';
141 sysadm 1.35 strncpy(p_section->stitle, row[2], sizeof(p_section->stitle) - 1);
142 sysadm 1.1 p_section->stitle[sizeof(p_section->stitle) - 1] = '\0';
143 sysadm 1.8 strncpy(p_section->master_list, master_list, sizeof(p_section->master_list) - 1);
144     p_section->master_list[sizeof(p_section->master_list) - 1] = '\0';
145 sysadm 1.1 }
146    
147     p_section->class_id = atoi(row[3]);
148     p_section->read_user_level = atoi(row[4]);
149     p_section->write_user_level = atoi(row[5]);
150     p_section->enable = (int8_t)atoi(row[6]);
151    
152 sysadm 1.34 // Update gen_ex menu set
153 sysadm 1.38 if (update_gen_ex && p_section->enable && atoi(row[7]) > p_section->ex_menu_tm)
154 sysadm 1.34 {
155     snprintf(ex_menu_conf, sizeof(ex_menu_conf), "%s/%d", VAR_GEN_EX_MENU_DIR, p_section->sid);
156    
157 sysadm 1.38 ret = load_menu(&ex_menu_set_new, ex_menu_conf);
158 sysadm 1.34 if (ret < 0)
159     {
160 sysadm 1.38 unload_menu(&ex_menu_set_new);
161     log_error("load_menu(%s) error: %d\n", ex_menu_conf, ret);
162 sysadm 1.34 }
163     else
164     {
165 sysadm 1.38 if (p_section->ex_menu_tm > 0)
166 sysadm 1.34 {
167 sysadm 1.38 unload_menu(&(p_section->ex_menu_set));
168 sysadm 1.34 }
169    
170 sysadm 1.38 ex_menu_set_new.allow_exit = 1; // Allow exit menu
171     memcpy(&(p_section->ex_menu_set), &ex_menu_set_new, sizeof(ex_menu_set_new));
172 sysadm 1.34
173 sysadm 1.38 p_section->ex_menu_tm = atol(row[7]);
174 sysadm 1.34 #ifdef _DEBUG
175 sysadm 1.38 log_common("Loaded gen_ex_menu of section %d [%s]\n", p_section->sid, p_section->sname);
176 sysadm 1.34 #endif
177     }
178     }
179    
180 sysadm 1.1 // release rw lock
181     ret = section_list_rw_unlock(p_section);
182     if (ret < 0)
183     {
184     break;
185     }
186     }
187 sysadm 1.23
188     cleanup:
189 sysadm 1.31 mysql_free_result(rs2);
190 sysadm 1.1 mysql_free_result(rs);
191 sysadm 1.2 mysql_close(db);
192    
193     return ret;
194 sysadm 1.1 }
195 sysadm 1.3
196 sysadm 1.9 int append_articles_from_db(int32_t start_aid, int global_lock, int article_count_limit)
197 sysadm 1.3 {
198 sysadm 1.23 MYSQL *db = NULL;
199     MYSQL_RES *rs = NULL;
200 sysadm 1.3 MYSQL_ROW row;
201     char sql[SQL_BUFFER_LEN];
202     ARTICLE article;
203 sysadm 1.5 ARTICLE *p_topic;
204 sysadm 1.3 SECTION_LIST *p_section = NULL;
205     int32_t last_sid = 0;
206 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
207 sysadm 1.9 int article_count = 0;
208 sysadm 1.3 int ret = 0;
209     int i;
210    
211     db = db_open();
212     if (db == NULL)
213     {
214     log_error("db_open() error: %s\n", mysql_error(db));
215 sysadm 1.23 ret = -1;
216     goto cleanup;
217 sysadm 1.3 }
218    
219     snprintf(sql, sizeof(sql),
220 sysadm 1.11 "SELECT bbs.AID, TID, SID, bbs.CID, UID, visible, excerption, ontop, `lock`, "
221     "transship, username, nickname, title, UNIX_TIMESTAMP(sub_dt) AS sub_dt, "
222 sysadm 1.16 "sub_ip, bbs_content.content "
223 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
224     "WHERE bbs.AID >= %d ORDER BY bbs.AID LIMIT %d",
225 sysadm 1.9 start_aid, article_count_limit);
226 sysadm 1.3
227     if (mysql_query(db, sql) != 0)
228     {
229     log_error("Query article list error: %s\n", mysql_error(db));
230 sysadm 1.23 ret = -2;
231     goto cleanup;
232 sysadm 1.3 }
233 sysadm 1.11 if ((rs = mysql_use_result(db)) == NULL)
234 sysadm 1.3 {
235     log_error("Get article list data failed\n");
236 sysadm 1.23 ret = -2;
237     goto cleanup;
238 sysadm 1.3 }
239    
240     // acquire global lock
241 sysadm 1.23 if (global_lock && (ret = section_list_rw_lock(NULL)) < 0)
242 sysadm 1.3 {
243 sysadm 1.23 log_error("section_list_rw_lock(sid = 0) error\n");
244     goto cleanup;
245 sysadm 1.3 }
246    
247     while ((row = mysql_fetch_row(rs)))
248     {
249 sysadm 1.22 memset(&article, 0, sizeof(ARTICLE));
250 sysadm 1.3
251     // copy data of article
252     i = 0;
253    
254     article.aid = atoi(row[i++]);
255     article.tid = atoi(row[i++]);
256     article.sid = atoi(row[i++]);
257     article.cid = atoi(row[i++]);
258     article.uid = atoi(row[i++]);
259     article.visible = (int8_t)atoi(row[i++]);
260     article.excerption = (int8_t)atoi(row[i++]);
261     article.ontop = (int8_t)atoi(row[i++]);
262     article.lock = (int8_t)atoi(row[i++]);
263 sysadm 1.5 article.transship = (int8_t)atoi(row[i++]);
264 sysadm 1.3
265     strncpy(article.username, row[i++], sizeof(article.username) - 1);
266     article.username[sizeof(article.username) - 1] = '\0';
267     strncpy(article.nickname, row[i++], sizeof(article.nickname) - 1);
268     article.nickname[sizeof(article.nickname) - 1] = '\0';
269     strncpy(article.title, row[i++], sizeof(article.title) - 1);
270     article.title[sizeof(article.title) - 1] = '\0';
271    
272     article.sub_dt = atol(row[i++]);
273    
274 sysadm 1.16 strncpy(sub_ip, row[i++], sizeof(sub_ip) - 1);
275     sub_ip[sizeof(sub_ip) - 1] = '\0';
276     ip_mask(sub_ip, 1, '*');
277    
278 sysadm 1.3 // release lock of last section if different from current one
279     if (!global_lock && article.sid != last_sid && last_sid != 0)
280     {
281     if ((ret = section_list_rw_unlock(p_section)) < 0)
282     {
283 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
284 sysadm 1.3 break;
285     }
286     }
287    
288     if ((p_section = section_list_find_by_sid(article.sid)) == NULL)
289     {
290     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", article.sid);
291 sysadm 1.4 ret = ERR_UNKNOWN_SECTION; // Unknown section found
292 sysadm 1.3 break;
293     }
294    
295 sysadm 1.5 if (article.visible != 0 && article.tid != 0)
296     {
297     // Check if topic article is visible
298     p_topic = article_block_find_by_aid(article.tid);
299     if (p_topic == NULL || p_topic->visible == 0)
300     {
301     // log_error("Set article (aid = %d) as invisible due to invisible or non-existing topic head\n", article.aid);
302     article.tid = 0;
303     article.visible = 0;
304     }
305     }
306    
307 sysadm 1.3 // acquire lock of current section if different from last one
308     if (!global_lock && article.sid != last_sid)
309     {
310 sysadm 1.4 if ((ret = section_list_rw_lock(p_section)) < 0)
311 sysadm 1.3 {
312 sysadm 1.11 log_error("section_list_rw_lock(sid=0) error\n");
313 sysadm 1.3 break;
314     }
315     }
316    
317     // append article to section list
318     last_sid = article.sid;
319    
320     if (section_list_append_article(p_section, &article) < 0)
321     {
322 sysadm 1.11 log_error("section_list_append_article(sid=%d, aid=%d) error\n",
323 sysadm 1.3 p_section->sid, article.aid);
324     ret = -3;
325     break;
326     }
327 sysadm 1.9
328     article_count++;
329    
330 sysadm 1.16 if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, &article, p_section, row[i++], sub_ip, 0) < 0)
331 sysadm 1.11 {
332     log_error("article_cache_generate(aid=%d, cid=%d) error\n", article.aid, article.cid);
333     ret = -4;
334     break;
335     }
336 sysadm 1.3 }
337    
338     // release lock of last section
339     if (!global_lock && last_sid != 0)
340     {
341     if ((ret = section_list_rw_unlock(p_section)) < 0)
342     {
343 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
344 sysadm 1.3 }
345     }
346    
347     // release global lock
348 sysadm 1.23 if (global_lock && (ret = section_list_rw_unlock(NULL)) < 0)
349 sysadm 1.3 {
350 sysadm 1.23 log_error("section_list_rw_unlock(sid=0) error\n");
351 sysadm 1.3 }
352    
353     cleanup:
354     mysql_free_result(rs);
355     mysql_close(db);
356    
357 sysadm 1.31 article_cache_cleanup();
358    
359 sysadm 1.9 return (ret < 0 ? ret : article_count);
360 sysadm 1.3 }
361 sysadm 1.4
362 sysadm 1.5 int set_last_article_op_log_from_db(void)
363     {
364 sysadm 1.23 MYSQL *db = NULL;
365     MYSQL_RES *rs = NULL;
366 sysadm 1.5 MYSQL_ROW row;
367     char sql[SQL_BUFFER_LEN];
368 sysadm 1.23 int ret = 0;
369 sysadm 1.5
370     db = db_open();
371     if (db == NULL)
372     {
373     log_error("db_open() error: %s\n", mysql_error(db));
374 sysadm 1.23 ret = -1;
375     goto cleanup;
376 sysadm 1.5 }
377    
378     snprintf(sql, sizeof(sql),
379     "SELECT MID FROM bbs_article_op ORDER BY MID DESC LIMIT 1");
380    
381     if (mysql_query(db, sql) != 0)
382     {
383     log_error("Query article op error: %s\n", mysql_error(db));
384 sysadm 1.23 ret = -2;
385     goto cleanup;
386 sysadm 1.5 }
387     if ((rs = mysql_store_result(db)) == NULL)
388     {
389     log_error("Get article op data failed\n");
390 sysadm 1.23 ret = -2;
391     goto cleanup;
392 sysadm 1.5 }
393    
394     if ((row = mysql_fetch_row(rs)))
395     {
396     last_article_op_log_mid = atoi(row[0]);
397     }
398    
399 sysadm 1.23 cleanup:
400 sysadm 1.5 mysql_free_result(rs);
401     mysql_close(db);
402    
403 sysadm 1.23 return (ret < 0 ? ret : last_article_op_log_mid);
404 sysadm 1.5 }
405    
406 sysadm 1.9 int apply_article_op_log_from_db(int op_count_limit)
407 sysadm 1.5 {
408 sysadm 1.23 MYSQL *db = NULL;
409     MYSQL_RES *rs = NULL, *rs2 = NULL;
410 sysadm 1.5 MYSQL_ROW row, row2;
411     char sql[SQL_BUFFER_LEN];
412     ARTICLE *p_article;
413     SECTION_LIST *p_section = NULL;
414     SECTION_LIST *p_section_dest;
415 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
416 sysadm 1.5 int32_t last_sid = 0;
417     int32_t sid_dest;
418 sysadm 1.9 int op_count = 0;
419 sysadm 1.5 int ret = 0;
420    
421     db = db_open();
422     if (db == NULL)
423     {
424     log_error("db_open() error: %s\n", mysql_error(db));
425 sysadm 1.23 ret = -1;
426     goto cleanup;
427 sysadm 1.5 }
428    
429     snprintf(sql, sizeof(sql),
430     "SELECT MID, AID, type FROM bbs_article_op "
431 sysadm 1.9 "WHERE MID > %d AND type NOT IN ('A') "
432     "ORDER BY MID LIMIT %d",
433     last_article_op_log_mid, op_count_limit);
434 sysadm 1.5
435     if (mysql_query(db, sql) != 0)
436     {
437     log_error("Query article log error: %s\n", mysql_error(db));
438 sysadm 1.23 ret = -2;
439     goto cleanup;
440 sysadm 1.5 }
441     if ((rs = mysql_store_result(db)) == NULL)
442     {
443     log_error("Get article log data failed\n");
444 sysadm 1.23 ret = -2;
445     goto cleanup;
446 sysadm 1.5 }
447    
448     while ((row = mysql_fetch_row(rs)))
449     {
450     p_article = article_block_find_by_aid(atoi(row[1]));
451     if (p_article == NULL) // related article has not been appended yet
452     {
453     ret = -2;
454     break;
455     }
456    
457     // release lock of last section if different from current one
458     if (p_article->sid != last_sid && last_sid != 0)
459     {
460     if ((ret = section_list_rw_unlock(p_section)) < 0)
461     {
462     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
463     break;
464     }
465     }
466    
467     if ((p_section = section_list_find_by_sid(p_article->sid)) == NULL)
468     {
469     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", p_article->sid);
470     ret = ERR_UNKNOWN_SECTION; // Unknown section found
471     break;
472     }
473    
474     // acquire lock of current section if different from last one
475     if (p_article->sid != last_sid)
476     {
477     if ((ret = section_list_rw_lock(p_section)) < 0)
478     {
479     log_error("section_list_rw_lock(sid = 0) error\n");
480     break;
481     }
482     }
483    
484     last_sid = p_article->sid;
485    
486     switch (row[2][0])
487     {
488     case 'A': // Add article
489     log_error("Operation type=A should not be found\n");
490     break;
491     case 'D': // Delete article
492     case 'X': // Delete article by Admin
493 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 0) < 0)
494 sysadm 1.5 {
495 sysadm 1.20 log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=0) error\n", p_section->sid, atoi(row[1]));
496     }
497     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
498     {
499     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
500 sysadm 1.5 }
501     break;
502     case 'S': // Restore article
503 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 1) < 0)
504     {
505     log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=1) error\n", p_section->sid, atoi(row[1]));
506     }
507     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
508     {
509     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
510     }
511 sysadm 1.5 break;
512     case 'L': // Lock article
513     p_article->lock = 1;
514     break;
515     case 'U': // Unlock article
516     p_article->lock = 0;
517     break;
518     case 'M': // Modify article
519 sysadm 1.9 snprintf(sql, sizeof(sql),
520 sysadm 1.16 "SELECT bbs.CID, sub_ip, bbs_content.content "
521 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
522     "WHERE bbs.AID = %d",
523 sysadm 1.9 p_article->aid);
524    
525     if (mysql_query(db, sql) != 0)
526     {
527     log_error("Query article error: %s\n", mysql_error(db));
528     ret = -3;
529     break;
530     }
531 sysadm 1.12 if ((rs2 = mysql_use_result(db)) == NULL)
532 sysadm 1.9 {
533     log_error("Get article data failed\n");
534     ret = -3;
535     break;
536     }
537     if ((row2 = mysql_fetch_row(rs2)))
538     {
539     p_article->cid = atoi(row2[0]);
540 sysadm 1.11
541 sysadm 1.16 strncpy(sub_ip, row2[1], sizeof(sub_ip) - 1);
542     sub_ip[sizeof(sub_ip) - 1] = '\0';
543     ip_mask(sub_ip, 1, '*');
544    
545     if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, p_article, p_section, row2[2], sub_ip, 0) < 0)
546 sysadm 1.11 {
547     log_error("article_cache_generate(aid=%d, cid=%d) error\n", p_article->aid, p_article->cid);
548     ret = -4;
549     }
550 sysadm 1.9 }
551     else
552     {
553     p_article->cid = 0;
554     ret = -4;
555     }
556     mysql_free_result(rs2);
557 sysadm 1.23 rs2 = NULL;
558 sysadm 1.21
559     p_article->excerption = 0; // Set excerption = 0 implicitly in case of rare condition
560 sysadm 1.5 break;
561     case 'T': // Move article
562     snprintf(sql, sizeof(sql),
563     "SELECT SID FROM bbs WHERE AID = %d",
564     p_article->aid);
565    
566     if (mysql_query(db, sql) != 0)
567     {
568     log_error("Query article error: %s\n", mysql_error(db));
569     ret = -3;
570     break;
571     }
572     if ((rs2 = mysql_store_result(db)) == NULL)
573     {
574     log_error("Get article data failed\n");
575     ret = -3;
576     break;
577     }
578     if ((row2 = mysql_fetch_row(rs2)))
579     {
580     sid_dest = atoi(row2[0]);
581     }
582     else
583     {
584     sid_dest = 0;
585     ret = -4;
586     }
587     mysql_free_result(rs2);
588 sysadm 1.23 rs2 = NULL;
589 sysadm 1.5
590     if (sid_dest > 0 && sid_dest != p_article->sid)
591     {
592     p_section_dest = section_list_find_by_sid(sid_dest);
593     if (p_section_dest == NULL)
594     {
595     ret = ERR_UNKNOWN_SECTION;
596     break;
597     }
598 sysadm 1.6 // acquire lock of dest section
599     if ((ret = section_list_rw_lock(p_section_dest)) < 0)
600     {
601     log_error("section_list_rw_lock(sid = %d) error\n", p_section_dest);
602     break;
603     }
604 sysadm 1.5 // Move topic
605     if ((ret = section_list_move_topic(p_section, p_section_dest, p_article->aid)) < 0)
606     {
607 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",
608     p_section->sid, p_section_dest->sid, p_article->aid, ret);
609     }
610     // release lock of dest section
611     if (section_list_rw_unlock(p_section_dest) < 0)
612     {
613     log_error("section_list_rw_unlock(sid = %d) error\n", p_section_dest);
614     ret = -1;
615 sysadm 1.5 }
616     }
617     break;
618     case 'E': // Set article as excerption
619     p_article->excerption = 1;
620     break;
621     case 'O': // Unset article as excerption
622     p_article->excerption = 0;
623     break;
624     case 'F': // Set article on top
625     case 'V': // Unset article on top
626 sysadm 1.32 p_article->ontop = (row[2][0] == 'F' ? 1 : 0);
627     if (section_list_update_article_ontop(p_section, p_article) < 0)
628     {
629     log_error("section_list_update_article_ontop(sid=%d, aid=%d) error\n",
630     p_section->sid, p_article->aid);
631     }
632 sysadm 1.5 break;
633     case 'Z': // Set article as trnasship
634     p_article->transship = 1;
635     break;
636     default:
637     // log_error("Operation type=%s unknown, mid=%s\n", row[2], row[0]);
638     break;
639     }
640    
641     if (ret < 0)
642     {
643     break;
644     }
645    
646     // Update MID with last successfully proceeded article_op_log
647     last_article_op_log_mid = atoi(row[0]);
648 sysadm 1.9
649     op_count++;
650 sysadm 1.5 }
651    
652     // release lock of last section
653     if (last_sid != 0)
654     {
655     if ((ret = section_list_rw_unlock(p_section)) < 0)
656     {
657     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
658     }
659     }
660    
661 sysadm 1.23 cleanup:
662     mysql_free_result(rs2);
663 sysadm 1.5 mysql_free_result(rs);
664     mysql_close(db);
665    
666 sysadm 1.9 return (ret < 0 ? ret : op_count);
667 sysadm 1.5 }
668    
669 sysadm 1.39 static void section_list_ex_menu_set_cleanup(void)
670     {
671     int i;
672    
673     for (i = 0; i < p_section_list_pool->section_count; i++)
674     {
675     if (p_section_list_pool->sections[i].ex_menu_tm > 0)
676     {
677     unload_menu(&(p_section_list_pool->sections[i].ex_menu_set));
678     }
679     }
680     }
681    
682 sysadm 1.4 int section_list_loader_launch(void)
683     {
684 sysadm 1.34 struct sigaction act = {0};
685 sysadm 1.4 int pid;
686     int ret;
687     int32_t last_aid;
688     int article_count;
689     int load_count;
690 sysadm 1.5 int last_mid;
691 sysadm 1.4 int i;
692    
693     if (section_list_loader_pid != 0)
694     {
695     log_error("section_list_loader already running, pid = %d\n", section_list_loader_pid);
696     return -2;
697     }
698    
699     pid = fork();
700    
701     if (pid > 0) // Parent process
702     {
703     SYS_child_process_count++;
704     section_list_loader_pid = pid;
705 sysadm 1.18 log_common("Section list loader process (pid = %d) start\n", pid);
706 sysadm 1.4 return 0;
707     }
708     else if (pid < 0) // Error
709     {
710     log_error("fork() error (%d)\n", errno);
711     return -1;
712     }
713    
714     // Child process
715     SYS_child_process_count = 0;
716    
717     // Detach menu in shared memory
718 sysadm 1.36 detach_menu_shm(&bbs_menu);
719 sysadm 1.4
720 sysadm 1.34 // Set signal handler
721     act.sa_handler = SIG_DFL;
722 sysadm 1.38 if (sigaction(SIGHUP, &act, NULL) == -1)
723     {
724     log_error("set signal action of SIGHUP error: %d\n", errno);
725     }
726     act.sa_handler = SIG_DFL;
727 sysadm 1.34 if (sigaction(SIGCHLD, &act, NULL) == -1)
728     {
729     log_error("set signal action of SIGCHLD error: %d\n", errno);
730     }
731    
732 sysadm 1.4 // Do section data loader periodically
733     while (!SYS_server_exit)
734     {
735 sysadm 1.38 if (SYS_conf_reload)
736 sysadm 1.4 {
737 sysadm 1.38 SYS_conf_reload = 0;
738 sysadm 1.4
739     // Load section config
740 sysadm 1.38 if (load_section_config_from_db(0) < 0)
741 sysadm 1.4 {
742 sysadm 1.38 log_error("load_section_config_from_db(0) error\n");
743 sysadm 1.4 }
744     else
745     {
746 sysadm 1.27 log_common("Reload section config successfully\n");
747 sysadm 1.4 }
748     }
749    
750     // Load section articles
751     article_count = article_block_article_count();
752    
753 sysadm 1.9 do
754 sysadm 1.4 {
755 sysadm 1.9 last_aid = article_block_last_aid();
756 sysadm 1.4
757 sysadm 1.9 if ((ret = append_articles_from_db(last_aid + 1, 0, LOAD_ARTICLE_COUNT_LIMIT)) < 0)
758 sysadm 1.4 {
759 sysadm 1.9 log_error("append_articles_from_db(%d, 0, %d) error\n", last_aid + 1, LOAD_ARTICLE_COUNT_LIMIT);
760    
761     if (ret == ERR_UNKNOWN_SECTION)
762     {
763 sysadm 1.38 SYS_conf_reload = 1; // Force reload section_list
764 sysadm 1.9 }
765 sysadm 1.4 }
766 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
767 sysadm 1.5
768     load_count = article_block_article_count() - article_count;
769     if (load_count > 0)
770     {
771 sysadm 1.17 log_common("Incrementally load %d articles, last_aid = %d\n", load_count, article_block_last_aid());
772 sysadm 1.5 }
773    
774 sysadm 1.38 if (SYS_conf_reload)
775 sysadm 1.5 {
776     continue;
777     }
778    
779     // Load article_op log
780     last_mid = last_article_op_log_mid;
781    
782 sysadm 1.9 do
783 sysadm 1.4 {
784 sysadm 1.9 if ((ret = apply_article_op_log_from_db(LOAD_ARTICLE_COUNT_LIMIT)) < 0)
785     {
786     log_error("apply_article_op_log_from_db() error\n");
787 sysadm 1.4
788 sysadm 1.9 if (ret == ERR_UNKNOWN_SECTION)
789     {
790 sysadm 1.38 SYS_conf_reload = 1; // Force reload section_list
791 sysadm 1.9 }
792 sysadm 1.4 }
793 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
794 sysadm 1.4
795 sysadm 1.5 if (last_article_op_log_mid > last_mid)
796     {
797 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);
798 sysadm 1.5 }
799    
800 sysadm 1.38 if (SYS_conf_reload)
801 sysadm 1.5 {
802     continue;
803     }
804    
805 sysadm 1.38 for (i = 0; i < BBS_section_list_load_interval && !SYS_server_exit && !SYS_conf_reload; i++)
806 sysadm 1.5 {
807     sleep(1);
808 sysadm 1.4 }
809     }
810    
811     // Child process exit
812    
813 sysadm 1.31 article_cache_cleanup();
814    
815 sysadm 1.34 // gen_ex_menu cleanup
816     section_list_ex_menu_set_cleanup();
817 sysadm 1.37
818 sysadm 1.4 // Detach data pools shm
819     detach_section_list_shm();
820     detach_article_block_shm();
821     detach_trie_dict_shm();
822    
823 sysadm 1.17 log_common("Section list loader process exit normally\n");
824 sysadm 1.4 log_end();
825    
826     section_list_loader_pid = 0;
827    
828     _exit(0);
829    
830     return 0;
831     }
832    
833 sysadm 1.33 int query_section_articles(SECTION_LIST *p_section, int page_id, ARTICLE *p_articles[],
834     int *p_article_count, int *p_page_count, int *p_ontop_start_offset)
835 sysadm 1.7 {
836     ARTICLE *p_article;
837     ARTICLE *p_next_page_first_article;
838     int ret = 0;
839 sysadm 1.32 int i;
840 sysadm 1.7
841 sysadm 1.33 if (p_section == NULL || p_articles == NULL || p_article_count == NULL || p_page_count == NULL || p_ontop_start_offset == NULL)
842 sysadm 1.7 {
843 sysadm 1.34 log_error("NULL pointer error\n");
844 sysadm 1.7 return -1;
845     }
846    
847     // acquire lock of section
848     if ((ret = section_list_rd_lock(p_section)) < 0)
849     {
850     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
851     return -2;
852     }
853    
854 sysadm 1.32 *p_page_count = section_list_page_count_with_ontop(p_section);
855     *p_article_count = 0;
856 sysadm 1.33 *p_ontop_start_offset = BBS_article_limit_per_page;
857 sysadm 1.10
858 sysadm 1.9 if (p_section->visible_article_count == 0)
859     {
860 sysadm 1.32 // empty section
861 sysadm 1.9 }
862 sysadm 1.32 else if (page_id < 0 || page_id >= *p_page_count)
863 sysadm 1.7 {
864 sysadm 1.32 log_error("Invalid page_id=%d, not in range [0, %d)\n", page_id, *p_page_count);
865 sysadm 1.7 ret = -3;
866     }
867     else
868     {
869     ret = page_id;
870    
871 sysadm 1.32 if (page_id <= p_section->page_count - 1)
872 sysadm 1.7 {
873 sysadm 1.32 p_article = p_section->p_page_first_article[page_id];
874     p_next_page_first_article =
875     (page_id == p_section->page_count - 1 ? p_section->p_article_head : p_section->p_page_first_article[page_id + 1]);
876    
877     do
878     {
879     if (p_article->visible)
880     {
881     p_articles[*p_article_count] = p_article;
882     (*p_article_count)++;
883     }
884     p_article = p_article->p_next;
885     } while (p_article != p_next_page_first_article && (*p_article_count) <= BBS_article_limit_per_page);
886    
887     if (*p_article_count != (page_id < p_section->page_count - 1 ? BBS_article_limit_per_page : p_section->last_page_visible_article_count))
888 sysadm 1.7 {
889 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);
890 sysadm 1.7 }
891 sysadm 1.32 }
892 sysadm 1.8
893 sysadm 1.33 *p_ontop_start_offset = *p_article_count;
894    
895 sysadm 1.32 // Append ontop articles
896     if (page_id >= p_section->page_count - 1)
897 sysadm 1.8 {
898 sysadm 1.32 i = (page_id == p_section->page_count - 1
899     ? 0
900     : (page_id - p_section->page_count + 1) * BBS_article_limit_per_page - p_section->last_page_visible_article_count);
901     while (*p_article_count < BBS_article_limit_per_page && i < p_section->ontop_article_count)
902     {
903     p_articles[(*p_article_count)++] = p_section->p_ontop_articles[i++];
904     }
905 sysadm 1.8 }
906 sysadm 1.7 }
907    
908     // release lock of section
909 sysadm 1.8 if (section_list_rd_unlock(p_section) < 0)
910 sysadm 1.7 {
911     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
912     ret = -2;
913     }
914    
915     return ret;
916     }
917 sysadm 1.14
918 sysadm 1.24 int locate_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, int direction, int step,
919 sysadm 1.15 int *p_page_id, int *p_visible_offset, int *p_article_count)
920 sysadm 1.14 {
921 sysadm 1.15 const ARTICLE *p_article = NULL;
922 sysadm 1.40 const ARTICLE *p_article_last = NULL;
923 sysadm 1.15 ARTICLE *p_tmp;
924 sysadm 1.14 int32_t aid = 0;
925 sysadm 1.24 int page_id = 0;
926     int offset = 0;
927 sysadm 1.14 int ret = 0;
928 sysadm 1.15 int i;
929 sysadm 1.14
930 sysadm 1.15 if (p_section == NULL || p_article_cur == NULL || p_page_id == NULL || p_visible_offset == NULL || p_article_count == NULL)
931 sysadm 1.14 {
932 sysadm 1.34 log_error("NULL pointer error\n");
933 sysadm 1.14 return -1;
934     }
935    
936     // acquire lock of section
937     if ((ret = section_list_rd_lock(p_section)) < 0)
938     {
939     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
940     return -2;
941     }
942    
943     if (direction == 0)
944     {
945     aid = p_article_cur->aid;
946     }
947     else if (direction == 1)
948     {
949 sysadm 1.43 for (p_article_last = p_article_cur, p_article = p_article_cur->p_topic_next;
950     step > 0 && p_article->aid > p_article_cur->aid;
951 sysadm 1.40 p_article = p_article->p_topic_next)
952 sysadm 1.14 {
953 sysadm 1.24 if (p_article->visible)
954     {
955     step--;
956 sysadm 1.40 p_article_last = p_article;
957 sysadm 1.24 }
958     }
959 sysadm 1.43 p_article = p_article_last;
960 sysadm 1.15
961 sysadm 1.25 aid = (p_article->aid > p_article_cur->aid && p_article->visible ? p_article->aid : 0);
962 sysadm 1.14 }
963     else if (direction == -1)
964     {
965 sysadm 1.43 for (p_article_last = p_article_cur, p_article = p_article_cur->p_topic_prior;
966     step > 0 && p_article->aid < p_article_cur->aid;
967 sysadm 1.40 p_article = p_article->p_topic_prior)
968 sysadm 1.14 {
969 sysadm 1.24 if (p_article->visible)
970     {
971     step--;
972 sysadm 1.40 p_article_last = p_article;
973 sysadm 1.24 }
974     }
975 sysadm 1.43 p_article = p_article_last;
976 sysadm 1.15
977 sysadm 1.25 aid = (p_article->aid < p_article_cur->aid && p_article->visible ? p_article->aid : 0);
978 sysadm 1.14 }
979    
980 sysadm 1.15 p_article = NULL;
981    
982 sysadm 1.14 if (aid > 0)
983     {
984 sysadm 1.15 p_article = section_list_find_article_with_offset(p_section, aid, &page_id, &offset, &p_tmp);
985 sysadm 1.14 if (p_article != NULL)
986     {
987 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);
988    
989     p_article = p_section->p_page_first_article[page_id];
990 sysadm 1.25 for (i = 0; i < *p_article_count && p_article != NULL;)
991 sysadm 1.15 {
992     if (p_article->visible)
993     {
994     if (p_article->aid == aid)
995     {
996     *p_page_id = page_id;
997     *p_visible_offset = i;
998     break;
999     }
1000     i++;
1001     if (i >= *p_article_count)
1002     {
1003     log_error("Visible article (aid=%d) not found in page %d\n", aid, page_id);
1004     p_article = NULL;
1005 sysadm 1.25 break;
1006 sysadm 1.15 }
1007     }
1008     p_article = p_article->p_next;
1009     }
1010 sysadm 1.32
1011     // Include ontop articles
1012     *p_article_count = section_list_page_article_count_with_ontop(p_section, page_id);
1013 sysadm 1.14 }
1014     }
1015    
1016     // release lock of section
1017     if (section_list_rd_unlock(p_section) < 0)
1018     {
1019     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1020     ret = -2;
1021     }
1022    
1023     return (ret < 0 ? ret : (p_article == NULL ? 0 : 1));
1024     }
1025 sysadm 1.34
1026 sysadm 1.44 int scan_unread_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, const ARTICLE **pp_article_unread)
1027     {
1028     ARTICLE *p_article;
1029     int ret = 0;
1030    
1031     if (p_section == NULL || p_article_cur == NULL || pp_article_unread == NULL)
1032     {
1033     log_error("NULL pointer error\n");
1034     return -1;
1035     }
1036    
1037     if (p_article_cur->sid != p_section->sid)
1038     {
1039     log_error("Inconsistent SID\n");
1040     return -1;
1041     }
1042    
1043     // acquire lock of section
1044     if ((ret = section_list_rd_lock(p_section)) < 0)
1045     {
1046     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1047     return -2;
1048     }
1049    
1050     *pp_article_unread = NULL;
1051    
1052     for (p_article = p_article_cur->p_next; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_next)
1053     {
1054     if (p_article->visible && !article_view_log_is_viewed(p_article->aid, &BBS_article_view_log))
1055     {
1056     *pp_article_unread = p_article;
1057     break;
1058     }
1059     }
1060    
1061     // release lock of section
1062     if (section_list_rd_unlock(p_section) < 0)
1063     {
1064     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1065     return -2;
1066     }
1067    
1068     return (p_article != NULL && p_article != p_article_cur ? 1 : 0);
1069     }
1070    
1071 sysadm 1.34 int get_section_ex_menu_set(SECTION_LIST *p_section, MENU_SET *p_ex_menu_set)
1072     {
1073     int ret = 0;
1074    
1075     if (p_section == NULL || p_ex_menu_set == NULL)
1076     {
1077     log_error("NULL pointer error\n");
1078     return -1;
1079     }
1080    
1081     // acquire lock of section
1082     if ((ret = section_list_rd_lock(p_section)) < 0)
1083     {
1084     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1085     return -2;
1086     }
1087    
1088     memcpy(p_ex_menu_set, &(p_section->ex_menu_set), sizeof(p_section->ex_menu_set));
1089    
1090     // release lock of section
1091     if (section_list_rd_unlock(p_section) < 0)
1092     {
1093     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1094     ret = -2;
1095     }
1096    
1097     return ret;
1098     }
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