/[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 1.46 - (hide annotations)
Mon Oct 6 11:51:03 2025 UTC (5 months, 1 week ago) by sysadm
Branch: MAIN
Changes since 1.45: +5 -1 lines
Content type: text/x-csrc 
Fix bug in passing NULL pointer to atoi / atol
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 1.45 #include "user_priv.h"
26 sysadm 1.1 #include <errno.h>
27 sysadm 1.4 #include <signal.h>
28 sysadm 1.29 #include <stdio.h>
29 sysadm 1.1 #include <stdlib.h>
30 sysadm 1.22 #include <string.h>
31 sysadm 1.4 #include <unistd.h>
32    
33 sysadm 1.5 int section_list_loader_pid;
34     int last_article_op_log_mid;
35 sysadm 1.1
36 sysadm 1.38 int load_section_config_from_db(int update_gen_ex)
37 sysadm 1.1 {
38 sysadm 1.23 MYSQL *db = NULL;
39     MYSQL_RES *rs = NULL, *rs2 = NULL;
40 sysadm 1.1 MYSQL_ROW row, row2;
41     char sql[SQL_BUFFER_LEN];
42     int32_t sid;
43 sysadm 1.8 char master_list[(BBS_username_max_len + 1) * 3 + 1];
44 sysadm 1.1 SECTION_LIST *p_section;
45 sysadm 1.34 char ex_menu_conf[FILE_PATH_LEN];
46     MENU_SET ex_menu_set_new;
47 sysadm 1.23 int ret = 0;
48 sysadm 1.1
49 sysadm 1.2 db = db_open();
50     if (db == NULL)
51     {
52     log_error("db_open() error: %s\n", mysql_error(db));
53 sysadm 1.23 ret = -1;
54     goto cleanup;
55 sysadm 1.2 }
56    
57 sysadm 1.1 snprintf(sql, sizeof(sql),
58 sysadm 1.2 "SELECT section_config.SID, sname, section_config.title, section_config.CID, "
59 sysadm 1.34 "read_user_level, write_user_level, section_config.enable * section_class.enable AS enable, "
60     "UNIX_TIMESTAMP(ex_menu_tm) AS ex_menu_tm "
61 sysadm 1.2 "FROM section_config INNER JOIN section_class ON section_config.CID = section_class.CID "
62 sysadm 1.1 "ORDER BY section_config.SID");
63    
64     if (mysql_query(db, sql) != 0)
65     {
66     log_error("Query section_list error: %s\n", mysql_error(db));
67 sysadm 1.23 ret = -2;
68     goto cleanup;
69 sysadm 1.1 }
70     if ((rs = mysql_store_result(db)) == NULL)
71     {
72     log_error("Get section_list data failed\n");
73 sysadm 1.23 ret = -2;
74     goto cleanup;
75 sysadm 1.1 }
76 sysadm 1.2
77     ret = 0;
78 sysadm 1.1 while ((row = mysql_fetch_row(rs)))
79     {
80     sid = atoi(row[0]);
81    
82     // Query section master
83     snprintf(sql, sizeof(sql),
84     "SELECT username FROM section_master "
85     "INNER JOIN user_list ON section_master.UID = user_list.UID "
86     "WHERE SID = %d AND section_master.enable AND (NOW() BETWEEN begin_dt AND end_dt) "
87 sysadm 1.8 "ORDER BY major DESC, begin_dt ASC LIMIT 3",
88 sysadm 1.1 sid);
89    
90     if (mysql_query(db, sql) != 0)
91     {
92     log_error("Query section_master error: %s\n", mysql_error(db));
93 sysadm 1.2 ret = -3;
94     break;
95 sysadm 1.1 }
96     if ((rs2 = mysql_store_result(db)) == NULL)
97     {
98     log_error("Get section_master data failed\n");
99 sysadm 1.2 ret = -3;
100     break;
101 sysadm 1.1 }
102 sysadm 1.8
103     master_list[0] = '\0';
104     while ((row2 = mysql_fetch_row(rs2)))
105 sysadm 1.1 {
106 sysadm 1.8 strncat(master_list, row2[0], sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
107     strncat(master_list, " ", sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
108 sysadm 1.1 }
109     mysql_free_result(rs2);
110 sysadm 1.23 rs2 = NULL;
111 sysadm 1.1
112     p_section = section_list_find_by_sid(sid);
113    
114     if (p_section == NULL)
115     {
116 sysadm 1.8 p_section = section_list_create(sid, row[1], row[2], master_list);
117 sysadm 1.1 if (p_section == NULL)
118     {
119 sysadm 1.2 log_error("section_list_create() error: load new section sid = %d sname = %s\n", sid, row[1]);
120     ret = -4;
121 sysadm 1.1 break;
122     }
123    
124     // acquire rw lock
125     ret = section_list_rw_lock(p_section);
126     if (ret < 0)
127     {
128     break;
129     }
130     }
131     else
132     {
133     // acquire rw lock
134     ret = section_list_rw_lock(p_section);
135     if (ret < 0)
136     {
137     break;
138     }
139    
140 sysadm 1.35 strncpy(p_section->sname, row[1], sizeof(p_section->sname) - 1);
141 sysadm 1.1 p_section->sname[sizeof(p_section->sname) - 1] = '\0';
142 sysadm 1.35 strncpy(p_section->stitle, row[2], sizeof(p_section->stitle) - 1);
143 sysadm 1.1 p_section->stitle[sizeof(p_section->stitle) - 1] = '\0';
144 sysadm 1.8 strncpy(p_section->master_list, master_list, sizeof(p_section->master_list) - 1);
145     p_section->master_list[sizeof(p_section->master_list) - 1] = '\0';
146 sysadm 1.1 }
147    
148     p_section->class_id = atoi(row[3]);
149     p_section->read_user_level = atoi(row[4]);
150     p_section->write_user_level = atoi(row[5]);
151     p_section->enable = (int8_t)atoi(row[6]);
152    
153 sysadm 1.34 // Update gen_ex menu set
154 sysadm 1.46 if (update_gen_ex && p_section->enable && atol(row[7] == NULL ? "0" : row[7]) > p_section->ex_menu_tm)
155 sysadm 1.34 {
156     snprintf(ex_menu_conf, sizeof(ex_menu_conf), "%s/%d", VAR_GEN_EX_MENU_DIR, p_section->sid);
157    
158 sysadm 1.38 ret = load_menu(&ex_menu_set_new, ex_menu_conf);
159 sysadm 1.34 if (ret < 0)
160     {
161 sysadm 1.38 unload_menu(&ex_menu_set_new);
162     log_error("load_menu(%s) error: %d\n", ex_menu_conf, ret);
163 sysadm 1.34 }
164     else
165     {
166 sysadm 1.38 if (p_section->ex_menu_tm > 0)
167 sysadm 1.34 {
168 sysadm 1.38 unload_menu(&(p_section->ex_menu_set));
169 sysadm 1.34 }
170    
171 sysadm 1.38 ex_menu_set_new.allow_exit = 1; // Allow exit menu
172     memcpy(&(p_section->ex_menu_set), &ex_menu_set_new, sizeof(ex_menu_set_new));
173 sysadm 1.34
174 sysadm 1.38 p_section->ex_menu_tm = atol(row[7]);
175 sysadm 1.34 #ifdef _DEBUG
176 sysadm 1.38 log_common("Loaded gen_ex_menu of section %d [%s]\n", p_section->sid, p_section->sname);
177 sysadm 1.34 #endif
178     }
179     }
180 sysadm 1.46 else
181     {
182     p_section->ex_menu_tm = 0;
183     }
184 sysadm 1.34
185 sysadm 1.1 // release rw lock
186     ret = section_list_rw_unlock(p_section);
187     if (ret < 0)
188     {
189     break;
190     }
191     }
192 sysadm 1.23
193     cleanup:
194 sysadm 1.31 mysql_free_result(rs2);
195 sysadm 1.1 mysql_free_result(rs);
196 sysadm 1.2 mysql_close(db);
197    
198     return ret;
199 sysadm 1.1 }
200 sysadm 1.3
201 sysadm 1.9 int append_articles_from_db(int32_t start_aid, int global_lock, int article_count_limit)
202 sysadm 1.3 {
203 sysadm 1.23 MYSQL *db = NULL;
204     MYSQL_RES *rs = NULL;
205 sysadm 1.3 MYSQL_ROW row;
206     char sql[SQL_BUFFER_LEN];
207     ARTICLE article;
208 sysadm 1.5 ARTICLE *p_topic;
209 sysadm 1.3 SECTION_LIST *p_section = NULL;
210     int32_t last_sid = 0;
211 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
212 sysadm 1.9 int article_count = 0;
213 sysadm 1.3 int ret = 0;
214     int i;
215    
216     db = db_open();
217     if (db == NULL)
218     {
219     log_error("db_open() error: %s\n", mysql_error(db));
220 sysadm 1.23 ret = -1;
221     goto cleanup;
222 sysadm 1.3 }
223    
224     snprintf(sql, sizeof(sql),
225 sysadm 1.11 "SELECT bbs.AID, TID, SID, bbs.CID, UID, visible, excerption, ontop, `lock`, "
226     "transship, username, nickname, title, UNIX_TIMESTAMP(sub_dt) AS sub_dt, "
227 sysadm 1.16 "sub_ip, bbs_content.content "
228 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
229     "WHERE bbs.AID >= %d ORDER BY bbs.AID LIMIT %d",
230 sysadm 1.9 start_aid, article_count_limit);
231 sysadm 1.3
232     if (mysql_query(db, sql) != 0)
233     {
234     log_error("Query article list error: %s\n", mysql_error(db));
235 sysadm 1.23 ret = -2;
236     goto cleanup;
237 sysadm 1.3 }
238 sysadm 1.11 if ((rs = mysql_use_result(db)) == NULL)
239 sysadm 1.3 {
240     log_error("Get article list data failed\n");
241 sysadm 1.23 ret = -2;
242     goto cleanup;
243 sysadm 1.3 }
244    
245     // acquire global lock
246 sysadm 1.23 if (global_lock && (ret = section_list_rw_lock(NULL)) < 0)
247 sysadm 1.3 {
248 sysadm 1.23 log_error("section_list_rw_lock(sid = 0) error\n");
249     goto cleanup;
250 sysadm 1.3 }
251    
252     while ((row = mysql_fetch_row(rs)))
253     {
254 sysadm 1.22 memset(&article, 0, sizeof(ARTICLE));
255 sysadm 1.3
256     // copy data of article
257     i = 0;
258    
259     article.aid = atoi(row[i++]);
260     article.tid = atoi(row[i++]);
261     article.sid = atoi(row[i++]);
262     article.cid = atoi(row[i++]);
263     article.uid = atoi(row[i++]);
264     article.visible = (int8_t)atoi(row[i++]);
265     article.excerption = (int8_t)atoi(row[i++]);
266     article.ontop = (int8_t)atoi(row[i++]);
267     article.lock = (int8_t)atoi(row[i++]);
268 sysadm 1.5 article.transship = (int8_t)atoi(row[i++]);
269 sysadm 1.3
270     strncpy(article.username, row[i++], sizeof(article.username) - 1);
271     article.username[sizeof(article.username) - 1] = '\0';
272     strncpy(article.nickname, row[i++], sizeof(article.nickname) - 1);
273     article.nickname[sizeof(article.nickname) - 1] = '\0';
274     strncpy(article.title, row[i++], sizeof(article.title) - 1);
275     article.title[sizeof(article.title) - 1] = '\0';
276    
277     article.sub_dt = atol(row[i++]);
278    
279 sysadm 1.16 strncpy(sub_ip, row[i++], sizeof(sub_ip) - 1);
280     sub_ip[sizeof(sub_ip) - 1] = '\0';
281     ip_mask(sub_ip, 1, '*');
282    
283 sysadm 1.3 // release lock of last section if different from current one
284     if (!global_lock && article.sid != last_sid && last_sid != 0)
285     {
286     if ((ret = section_list_rw_unlock(p_section)) < 0)
287     {
288 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
289 sysadm 1.3 break;
290     }
291     }
292    
293     if ((p_section = section_list_find_by_sid(article.sid)) == NULL)
294     {
295     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", article.sid);
296 sysadm 1.4 ret = ERR_UNKNOWN_SECTION; // Unknown section found
297 sysadm 1.3 break;
298     }
299    
300 sysadm 1.5 if (article.visible != 0 && article.tid != 0)
301     {
302     // Check if topic article is visible
303     p_topic = article_block_find_by_aid(article.tid);
304     if (p_topic == NULL || p_topic->visible == 0)
305     {
306     // log_error("Set article (aid = %d) as invisible due to invisible or non-existing topic head\n", article.aid);
307     article.tid = 0;
308     article.visible = 0;
309     }
310     }
311    
312 sysadm 1.3 // acquire lock of current section if different from last one
313     if (!global_lock && article.sid != last_sid)
314     {
315 sysadm 1.4 if ((ret = section_list_rw_lock(p_section)) < 0)
316 sysadm 1.3 {
317 sysadm 1.11 log_error("section_list_rw_lock(sid=0) error\n");
318 sysadm 1.3 break;
319     }
320     }
321    
322     // append article to section list
323     last_sid = article.sid;
324    
325     if (section_list_append_article(p_section, &article) < 0)
326     {
327 sysadm 1.11 log_error("section_list_append_article(sid=%d, aid=%d) error\n",
328 sysadm 1.3 p_section->sid, article.aid);
329     ret = -3;
330     break;
331     }
332 sysadm 1.9
333     article_count++;
334    
335 sysadm 1.16 if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, &article, p_section, row[i++], sub_ip, 0) < 0)
336 sysadm 1.11 {
337     log_error("article_cache_generate(aid=%d, cid=%d) error\n", article.aid, article.cid);
338     ret = -4;
339     break;
340     }
341 sysadm 1.3 }
342    
343     // release lock of last section
344     if (!global_lock && last_sid != 0)
345     {
346     if ((ret = section_list_rw_unlock(p_section)) < 0)
347     {
348 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
349 sysadm 1.3 }
350     }
351    
352     // release global lock
353 sysadm 1.23 if (global_lock && (ret = section_list_rw_unlock(NULL)) < 0)
354 sysadm 1.3 {
355 sysadm 1.23 log_error("section_list_rw_unlock(sid=0) error\n");
356 sysadm 1.3 }
357    
358     cleanup:
359     mysql_free_result(rs);
360     mysql_close(db);
361    
362 sysadm 1.31 article_cache_cleanup();
363    
364 sysadm 1.9 return (ret < 0 ? ret : article_count);
365 sysadm 1.3 }
366 sysadm 1.4
367 sysadm 1.5 int set_last_article_op_log_from_db(void)
368     {
369 sysadm 1.23 MYSQL *db = NULL;
370     MYSQL_RES *rs = NULL;
371 sysadm 1.5 MYSQL_ROW row;
372     char sql[SQL_BUFFER_LEN];
373 sysadm 1.23 int ret = 0;
374 sysadm 1.5
375     db = db_open();
376     if (db == NULL)
377     {
378     log_error("db_open() error: %s\n", mysql_error(db));
379 sysadm 1.23 ret = -1;
380     goto cleanup;
381 sysadm 1.5 }
382    
383     snprintf(sql, sizeof(sql),
384     "SELECT MID FROM bbs_article_op ORDER BY MID DESC LIMIT 1");
385    
386     if (mysql_query(db, sql) != 0)
387     {
388     log_error("Query article op error: %s\n", mysql_error(db));
389 sysadm 1.23 ret = -2;
390     goto cleanup;
391 sysadm 1.5 }
392     if ((rs = mysql_store_result(db)) == NULL)
393     {
394     log_error("Get article op data failed\n");
395 sysadm 1.23 ret = -2;
396     goto cleanup;
397 sysadm 1.5 }
398    
399     if ((row = mysql_fetch_row(rs)))
400     {
401     last_article_op_log_mid = atoi(row[0]);
402     }
403    
404 sysadm 1.23 cleanup:
405 sysadm 1.5 mysql_free_result(rs);
406     mysql_close(db);
407    
408 sysadm 1.23 return (ret < 0 ? ret : last_article_op_log_mid);
409 sysadm 1.5 }
410    
411 sysadm 1.9 int apply_article_op_log_from_db(int op_count_limit)
412 sysadm 1.5 {
413 sysadm 1.23 MYSQL *db = NULL;
414     MYSQL_RES *rs = NULL, *rs2 = NULL;
415 sysadm 1.5 MYSQL_ROW row, row2;
416     char sql[SQL_BUFFER_LEN];
417     ARTICLE *p_article;
418     SECTION_LIST *p_section = NULL;
419     SECTION_LIST *p_section_dest;
420 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
421 sysadm 1.5 int32_t last_sid = 0;
422     int32_t sid_dest;
423 sysadm 1.9 int op_count = 0;
424 sysadm 1.5 int ret = 0;
425    
426     db = db_open();
427     if (db == NULL)
428     {
429     log_error("db_open() error: %s\n", mysql_error(db));
430 sysadm 1.23 ret = -1;
431     goto cleanup;
432 sysadm 1.5 }
433    
434     snprintf(sql, sizeof(sql),
435     "SELECT MID, AID, type FROM bbs_article_op "
436 sysadm 1.9 "WHERE MID > %d AND type NOT IN ('A') "
437     "ORDER BY MID LIMIT %d",
438     last_article_op_log_mid, op_count_limit);
439 sysadm 1.5
440     if (mysql_query(db, sql) != 0)
441     {
442     log_error("Query article log error: %s\n", mysql_error(db));
443 sysadm 1.23 ret = -2;
444     goto cleanup;
445 sysadm 1.5 }
446     if ((rs = mysql_store_result(db)) == NULL)
447     {
448     log_error("Get article log data failed\n");
449 sysadm 1.23 ret = -2;
450     goto cleanup;
451 sysadm 1.5 }
452    
453     while ((row = mysql_fetch_row(rs)))
454     {
455     p_article = article_block_find_by_aid(atoi(row[1]));
456     if (p_article == NULL) // related article has not been appended yet
457     {
458     ret = -2;
459     break;
460     }
461    
462     // release lock of last section if different from current one
463     if (p_article->sid != last_sid && last_sid != 0)
464     {
465     if ((ret = section_list_rw_unlock(p_section)) < 0)
466     {
467     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
468     break;
469     }
470     }
471    
472     if ((p_section = section_list_find_by_sid(p_article->sid)) == NULL)
473     {
474     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", p_article->sid);
475     ret = ERR_UNKNOWN_SECTION; // Unknown section found
476     break;
477     }
478    
479     // acquire lock of current section if different from last one
480     if (p_article->sid != last_sid)
481     {
482     if ((ret = section_list_rw_lock(p_section)) < 0)
483     {
484     log_error("section_list_rw_lock(sid = 0) error\n");
485     break;
486     }
487     }
488    
489     last_sid = p_article->sid;
490    
491     switch (row[2][0])
492     {
493     case 'A': // Add article
494     log_error("Operation type=A should not be found\n");
495     break;
496     case 'D': // Delete article
497     case 'X': // Delete article by Admin
498 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 0) < 0)
499 sysadm 1.5 {
500 sysadm 1.20 log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=0) error\n", p_section->sid, atoi(row[1]));
501     }
502     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
503     {
504     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
505 sysadm 1.5 }
506     break;
507     case 'S': // Restore article
508 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 1) < 0)
509     {
510     log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=1) error\n", p_section->sid, atoi(row[1]));
511     }
512     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
513     {
514     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
515     }
516 sysadm 1.5 break;
517     case 'L': // Lock article
518     p_article->lock = 1;
519     break;
520     case 'U': // Unlock article
521     p_article->lock = 0;
522     break;
523     case 'M': // Modify article
524 sysadm 1.9 snprintf(sql, sizeof(sql),
525 sysadm 1.16 "SELECT bbs.CID, sub_ip, bbs_content.content "
526 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
527     "WHERE bbs.AID = %d",
528 sysadm 1.9 p_article->aid);
529    
530     if (mysql_query(db, sql) != 0)
531     {
532     log_error("Query article error: %s\n", mysql_error(db));
533     ret = -3;
534     break;
535     }
536 sysadm 1.12 if ((rs2 = mysql_use_result(db)) == NULL)
537 sysadm 1.9 {
538     log_error("Get article data failed\n");
539     ret = -3;
540     break;
541     }
542     if ((row2 = mysql_fetch_row(rs2)))
543     {
544     p_article->cid = atoi(row2[0]);
545 sysadm 1.11
546 sysadm 1.16 strncpy(sub_ip, row2[1], sizeof(sub_ip) - 1);
547     sub_ip[sizeof(sub_ip) - 1] = '\0';
548     ip_mask(sub_ip, 1, '*');
549    
550     if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, p_article, p_section, row2[2], sub_ip, 0) < 0)
551 sysadm 1.11 {
552     log_error("article_cache_generate(aid=%d, cid=%d) error\n", p_article->aid, p_article->cid);
553     ret = -4;
554     }
555 sysadm 1.9 }
556     else
557     {
558     p_article->cid = 0;
559     ret = -4;
560     }
561     mysql_free_result(rs2);
562 sysadm 1.23 rs2 = NULL;
563 sysadm 1.21
564     p_article->excerption = 0; // Set excerption = 0 implicitly in case of rare condition
565 sysadm 1.5 break;
566     case 'T': // Move article
567     snprintf(sql, sizeof(sql),
568     "SELECT SID FROM bbs WHERE AID = %d",
569     p_article->aid);
570    
571     if (mysql_query(db, sql) != 0)
572     {
573     log_error("Query article error: %s\n", mysql_error(db));
574     ret = -3;
575     break;
576     }
577     if ((rs2 = mysql_store_result(db)) == NULL)
578     {
579     log_error("Get article data failed\n");
580     ret = -3;
581     break;
582     }
583     if ((row2 = mysql_fetch_row(rs2)))
584     {
585     sid_dest = atoi(row2[0]);
586     }
587     else
588     {
589     sid_dest = 0;
590     ret = -4;
591     }
592     mysql_free_result(rs2);
593 sysadm 1.23 rs2 = NULL;
594 sysadm 1.5
595     if (sid_dest > 0 && sid_dest != p_article->sid)
596     {
597     p_section_dest = section_list_find_by_sid(sid_dest);
598     if (p_section_dest == NULL)
599     {
600     ret = ERR_UNKNOWN_SECTION;
601     break;
602     }
603 sysadm 1.6 // acquire lock of dest section
604     if ((ret = section_list_rw_lock(p_section_dest)) < 0)
605     {
606     log_error("section_list_rw_lock(sid = %d) error\n", p_section_dest);
607     break;
608     }
609 sysadm 1.5 // Move topic
610     if ((ret = section_list_move_topic(p_section, p_section_dest, p_article->aid)) < 0)
611     {
612 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",
613     p_section->sid, p_section_dest->sid, p_article->aid, ret);
614     }
615     // release lock of dest section
616     if (section_list_rw_unlock(p_section_dest) < 0)
617     {
618     log_error("section_list_rw_unlock(sid = %d) error\n", p_section_dest);
619     ret = -1;
620 sysadm 1.5 }
621     }
622     break;
623     case 'E': // Set article as excerption
624     p_article->excerption = 1;
625     break;
626     case 'O': // Unset article as excerption
627     p_article->excerption = 0;
628     break;
629     case 'F': // Set article on top
630     case 'V': // Unset article on top
631 sysadm 1.32 p_article->ontop = (row[2][0] == 'F' ? 1 : 0);
632     if (section_list_update_article_ontop(p_section, p_article) < 0)
633     {
634     log_error("section_list_update_article_ontop(sid=%d, aid=%d) error\n",
635     p_section->sid, p_article->aid);
636     }
637 sysadm 1.5 break;
638     case 'Z': // Set article as trnasship
639     p_article->transship = 1;
640     break;
641     default:
642     // log_error("Operation type=%s unknown, mid=%s\n", row[2], row[0]);
643     break;
644     }
645    
646     if (ret < 0)
647     {
648     break;
649     }
650    
651     // Update MID with last successfully proceeded article_op_log
652     last_article_op_log_mid = atoi(row[0]);
653 sysadm 1.9
654     op_count++;
655 sysadm 1.5 }
656    
657     // release lock of last section
658     if (last_sid != 0)
659     {
660     if ((ret = section_list_rw_unlock(p_section)) < 0)
661     {
662     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
663     }
664     }
665    
666 sysadm 1.23 cleanup:
667     mysql_free_result(rs2);
668 sysadm 1.5 mysql_free_result(rs);
669     mysql_close(db);
670    
671 sysadm 1.9 return (ret < 0 ? ret : op_count);
672 sysadm 1.5 }
673    
674 sysadm 1.39 static void section_list_ex_menu_set_cleanup(void)
675     {
676     int i;
677    
678     for (i = 0; i < p_section_list_pool->section_count; i++)
679     {
680     if (p_section_list_pool->sections[i].ex_menu_tm > 0)
681     {
682     unload_menu(&(p_section_list_pool->sections[i].ex_menu_set));
683     }
684     }
685     }
686    
687 sysadm 1.4 int section_list_loader_launch(void)
688     {
689 sysadm 1.34 struct sigaction act = {0};
690 sysadm 1.4 int pid;
691     int ret;
692     int32_t last_aid;
693     int article_count;
694     int load_count;
695 sysadm 1.5 int last_mid;
696 sysadm 1.4 int i;
697    
698     if (section_list_loader_pid != 0)
699     {
700     log_error("section_list_loader already running, pid = %d\n", section_list_loader_pid);
701     return -2;
702     }
703    
704     pid = fork();
705    
706     if (pid > 0) // Parent process
707     {
708     SYS_child_process_count++;
709     section_list_loader_pid = pid;
710 sysadm 1.18 log_common("Section list loader process (pid = %d) start\n", pid);
711 sysadm 1.4 return 0;
712     }
713     else if (pid < 0) // Error
714     {
715     log_error("fork() error (%d)\n", errno);
716     return -1;
717     }
718    
719     // Child process
720     SYS_child_process_count = 0;
721    
722     // Detach menu in shared memory
723 sysadm 1.36 detach_menu_shm(&bbs_menu);
724 sysadm 1.4
725 sysadm 1.34 // Set signal handler
726     act.sa_handler = SIG_DFL;
727 sysadm 1.38 if (sigaction(SIGHUP, &act, NULL) == -1)
728     {
729     log_error("set signal action of SIGHUP error: %d\n", errno);
730     }
731     act.sa_handler = SIG_DFL;
732 sysadm 1.34 if (sigaction(SIGCHLD, &act, NULL) == -1)
733     {
734     log_error("set signal action of SIGCHLD error: %d\n", errno);
735     }
736    
737 sysadm 1.4 // Do section data loader periodically
738     while (!SYS_server_exit)
739     {
740 sysadm 1.38 if (SYS_conf_reload)
741 sysadm 1.4 {
742 sysadm 1.38 SYS_conf_reload = 0;
743 sysadm 1.4
744     // Load section config
745 sysadm 1.38 if (load_section_config_from_db(0) < 0)
746 sysadm 1.4 {
747 sysadm 1.38 log_error("load_section_config_from_db(0) error\n");
748 sysadm 1.4 }
749     else
750     {
751 sysadm 1.27 log_common("Reload section config successfully\n");
752 sysadm 1.4 }
753     }
754    
755     // Load section articles
756     article_count = article_block_article_count();
757    
758 sysadm 1.9 do
759 sysadm 1.4 {
760 sysadm 1.9 last_aid = article_block_last_aid();
761 sysadm 1.4
762 sysadm 1.9 if ((ret = append_articles_from_db(last_aid + 1, 0, LOAD_ARTICLE_COUNT_LIMIT)) < 0)
763 sysadm 1.4 {
764 sysadm 1.9 log_error("append_articles_from_db(%d, 0, %d) error\n", last_aid + 1, LOAD_ARTICLE_COUNT_LIMIT);
765    
766     if (ret == ERR_UNKNOWN_SECTION)
767     {
768 sysadm 1.38 SYS_conf_reload = 1; // Force reload section_list
769 sysadm 1.9 }
770 sysadm 1.4 }
771 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
772 sysadm 1.5
773     load_count = article_block_article_count() - article_count;
774     if (load_count > 0)
775     {
776 sysadm 1.17 log_common("Incrementally load %d articles, last_aid = %d\n", load_count, article_block_last_aid());
777 sysadm 1.5 }
778    
779 sysadm 1.38 if (SYS_conf_reload)
780 sysadm 1.5 {
781     continue;
782     }
783    
784     // Load article_op log
785     last_mid = last_article_op_log_mid;
786    
787 sysadm 1.9 do
788 sysadm 1.4 {
789 sysadm 1.9 if ((ret = apply_article_op_log_from_db(LOAD_ARTICLE_COUNT_LIMIT)) < 0)
790     {
791     log_error("apply_article_op_log_from_db() error\n");
792 sysadm 1.4
793 sysadm 1.9 if (ret == ERR_UNKNOWN_SECTION)
794     {
795 sysadm 1.38 SYS_conf_reload = 1; // Force reload section_list
796 sysadm 1.9 }
797 sysadm 1.4 }
798 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
799 sysadm 1.4
800 sysadm 1.5 if (last_article_op_log_mid > last_mid)
801     {
802 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);
803 sysadm 1.5 }
804    
805 sysadm 1.38 if (SYS_conf_reload)
806 sysadm 1.5 {
807     continue;
808     }
809    
810 sysadm 1.38 for (i = 0; i < BBS_section_list_load_interval && !SYS_server_exit && !SYS_conf_reload; i++)
811 sysadm 1.5 {
812     sleep(1);
813 sysadm 1.4 }
814     }
815    
816     // Child process exit
817    
818 sysadm 1.31 article_cache_cleanup();
819    
820 sysadm 1.34 // gen_ex_menu cleanup
821     section_list_ex_menu_set_cleanup();
822 sysadm 1.37
823 sysadm 1.4 // Detach data pools shm
824     detach_section_list_shm();
825     detach_article_block_shm();
826     detach_trie_dict_shm();
827    
828 sysadm 1.17 log_common("Section list loader process exit normally\n");
829 sysadm 1.4 log_end();
830    
831     section_list_loader_pid = 0;
832    
833     _exit(0);
834    
835     return 0;
836     }
837    
838 sysadm 1.33 int query_section_articles(SECTION_LIST *p_section, int page_id, ARTICLE *p_articles[],
839     int *p_article_count, int *p_page_count, int *p_ontop_start_offset)
840 sysadm 1.7 {
841     ARTICLE *p_article;
842     ARTICLE *p_next_page_first_article;
843     int ret = 0;
844 sysadm 1.32 int i;
845 sysadm 1.7
846 sysadm 1.33 if (p_section == NULL || p_articles == NULL || p_article_count == NULL || p_page_count == NULL || p_ontop_start_offset == NULL)
847 sysadm 1.7 {
848 sysadm 1.34 log_error("NULL pointer error\n");
849 sysadm 1.7 return -1;
850     }
851    
852     // acquire lock of section
853     if ((ret = section_list_rd_lock(p_section)) < 0)
854     {
855     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
856     return -2;
857     }
858    
859 sysadm 1.32 *p_page_count = section_list_page_count_with_ontop(p_section);
860     *p_article_count = 0;
861 sysadm 1.33 *p_ontop_start_offset = BBS_article_limit_per_page;
862 sysadm 1.10
863 sysadm 1.9 if (p_section->visible_article_count == 0)
864     {
865 sysadm 1.32 // empty section
866 sysadm 1.9 }
867 sysadm 1.32 else if (page_id < 0 || page_id >= *p_page_count)
868 sysadm 1.7 {
869 sysadm 1.32 log_error("Invalid page_id=%d, not in range [0, %d)\n", page_id, *p_page_count);
870 sysadm 1.7 ret = -3;
871     }
872     else
873     {
874     ret = page_id;
875    
876 sysadm 1.32 if (page_id <= p_section->page_count - 1)
877 sysadm 1.7 {
878 sysadm 1.32 p_article = p_section->p_page_first_article[page_id];
879     p_next_page_first_article =
880     (page_id == p_section->page_count - 1 ? p_section->p_article_head : p_section->p_page_first_article[page_id + 1]);
881    
882     do
883     {
884     if (p_article->visible)
885     {
886     p_articles[*p_article_count] = p_article;
887     (*p_article_count)++;
888     }
889     p_article = p_article->p_next;
890     } while (p_article != p_next_page_first_article && (*p_article_count) <= BBS_article_limit_per_page);
891    
892     if (*p_article_count != (page_id < p_section->page_count - 1 ? BBS_article_limit_per_page : p_section->last_page_visible_article_count))
893 sysadm 1.7 {
894 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);
895 sysadm 1.7 }
896 sysadm 1.32 }
897 sysadm 1.8
898 sysadm 1.33 *p_ontop_start_offset = *p_article_count;
899    
900 sysadm 1.32 // Append ontop articles
901     if (page_id >= p_section->page_count - 1)
902 sysadm 1.8 {
903 sysadm 1.32 i = (page_id == p_section->page_count - 1
904     ? 0
905     : (page_id - p_section->page_count + 1) * BBS_article_limit_per_page - p_section->last_page_visible_article_count);
906     while (*p_article_count < BBS_article_limit_per_page && i < p_section->ontop_article_count)
907     {
908     p_articles[(*p_article_count)++] = p_section->p_ontop_articles[i++];
909     }
910 sysadm 1.8 }
911 sysadm 1.7 }
912    
913     // release lock of section
914 sysadm 1.8 if (section_list_rd_unlock(p_section) < 0)
915 sysadm 1.7 {
916     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
917     ret = -2;
918     }
919    
920     return ret;
921     }
922 sysadm 1.14
923 sysadm 1.24 int locate_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, int direction, int step,
924 sysadm 1.15 int *p_page_id, int *p_visible_offset, int *p_article_count)
925 sysadm 1.14 {
926 sysadm 1.15 const ARTICLE *p_article = NULL;
927 sysadm 1.40 const ARTICLE *p_article_last = NULL;
928 sysadm 1.15 ARTICLE *p_tmp;
929 sysadm 1.14 int32_t aid = 0;
930 sysadm 1.24 int page_id = 0;
931     int offset = 0;
932 sysadm 1.14 int ret = 0;
933 sysadm 1.15 int i;
934 sysadm 1.14
935 sysadm 1.15 if (p_section == NULL || p_article_cur == NULL || p_page_id == NULL || p_visible_offset == NULL || p_article_count == NULL)
936 sysadm 1.14 {
937 sysadm 1.34 log_error("NULL pointer error\n");
938 sysadm 1.14 return -1;
939     }
940    
941     // acquire lock of section
942     if ((ret = section_list_rd_lock(p_section)) < 0)
943     {
944     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
945     return -2;
946     }
947    
948     if (direction == 0)
949     {
950     aid = p_article_cur->aid;
951     }
952     else if (direction == 1)
953     {
954 sysadm 1.43 for (p_article_last = p_article_cur, p_article = p_article_cur->p_topic_next;
955     step > 0 && p_article->aid > p_article_cur->aid;
956 sysadm 1.40 p_article = p_article->p_topic_next)
957 sysadm 1.14 {
958 sysadm 1.24 if (p_article->visible)
959     {
960     step--;
961 sysadm 1.40 p_article_last = p_article;
962 sysadm 1.24 }
963     }
964 sysadm 1.43 p_article = p_article_last;
965 sysadm 1.15
966 sysadm 1.25 aid = (p_article->aid > p_article_cur->aid && p_article->visible ? p_article->aid : 0);
967 sysadm 1.14 }
968     else if (direction == -1)
969     {
970 sysadm 1.43 for (p_article_last = p_article_cur, p_article = p_article_cur->p_topic_prior;
971     step > 0 && p_article->aid < p_article_cur->aid;
972 sysadm 1.40 p_article = p_article->p_topic_prior)
973 sysadm 1.14 {
974 sysadm 1.24 if (p_article->visible)
975     {
976     step--;
977 sysadm 1.40 p_article_last = p_article;
978 sysadm 1.24 }
979     }
980 sysadm 1.43 p_article = p_article_last;
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 sysadm 1.44 int scan_unread_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, const ARTICLE **pp_article_unread)
1032     {
1033     ARTICLE *p_article;
1034     int ret = 0;
1035    
1036     if (p_section == NULL || p_article_cur == NULL || pp_article_unread == NULL)
1037     {
1038     log_error("NULL pointer error\n");
1039     return -1;
1040     }
1041    
1042     if (p_article_cur->sid != p_section->sid)
1043     {
1044     log_error("Inconsistent SID\n");
1045     return -1;
1046     }
1047    
1048     // acquire lock of section
1049     if ((ret = section_list_rd_lock(p_section)) < 0)
1050     {
1051     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1052     return -2;
1053     }
1054    
1055     *pp_article_unread = NULL;
1056    
1057     for (p_article = p_article_cur->p_next; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_next)
1058     {
1059 sysadm 1.45 if (p_article->visible && p_article->uid != BBS_priv.uid && !article_view_log_is_viewed(p_article->aid, &BBS_article_view_log))
1060 sysadm 1.44 {
1061     *pp_article_unread = p_article;
1062     break;
1063     }
1064     }
1065    
1066     // release lock of section
1067     if (section_list_rd_unlock(p_section) < 0)
1068     {
1069     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1070     return -2;
1071     }
1072    
1073     return (p_article != NULL && p_article != p_article_cur ? 1 : 0);
1074     }
1075    
1076 sysadm 1.34 int get_section_ex_menu_set(SECTION_LIST *p_section, MENU_SET *p_ex_menu_set)
1077     {
1078     int ret = 0;
1079    
1080     if (p_section == NULL || p_ex_menu_set == NULL)
1081     {
1082     log_error("NULL pointer error\n");
1083     return -1;
1084     }
1085    
1086     // acquire lock of section
1087     if ((ret = section_list_rd_lock(p_section)) < 0)
1088     {
1089     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1090     return -2;
1091     }
1092    
1093     memcpy(p_ex_menu_set, &(p_section->ex_menu_set), sizeof(p_section->ex_menu_set));
1094    
1095     // release lock of section
1096     if (section_list_rd_unlock(p_section) < 0)
1097     {
1098     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1099     ret = -2;
1100     }
1101    
1102     return ret;
1103     }
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