/[LeafOK_CVS]/lbbs/src/section_list_loader.c
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Revision 1.64 - (hide annotations)
Tue Nov 4 14:58:56 2025 UTC (4 months, 1 week ago) by sysadm
Branch: MAIN
Changes since 1.63: +1 -1 lines
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1 sysadm 1.63 /* SPDX-License-Identifier: GPL-3.0-or-later */
2     /*
3     * section_list_loader
4     * - load and query operations of section articles
5     *
6 sysadm 1.64 * Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
7 sysadm 1.63 */
8 sysadm 1.1
9 sysadm 1.11 #include "article_cache.h"
10 sysadm 1.44 #include "article_view_log.h"
11 sysadm 1.19 #include "bbs.h"
12 sysadm 1.30 #include "database.h"
13 sysadm 1.39 #include "ip_mask.h"
14 sysadm 1.1 #include "log.h"
15 sysadm 1.4 #include "menu.h"
16 sysadm 1.30 #include "section_list_loader.h"
17 sysadm 1.52 #include "user_list.h"
18 sysadm 1.45 #include "user_priv.h"
19 sysadm 1.1 #include <errno.h>
20 sysadm 1.4 #include <signal.h>
21 sysadm 1.29 #include <stdio.h>
22 sysadm 1.1 #include <stdlib.h>
23 sysadm 1.22 #include <string.h>
24 sysadm 1.4 #include <unistd.h>
25    
26 sysadm 1.5 int section_list_loader_pid;
27     int last_article_op_log_mid;
28 sysadm 1.1
29 sysadm 1.38 int load_section_config_from_db(int update_gen_ex)
30 sysadm 1.1 {
31 sysadm 1.23 MYSQL *db = NULL;
32     MYSQL_RES *rs = NULL, *rs2 = NULL;
33 sysadm 1.1 MYSQL_ROW row, row2;
34     char sql[SQL_BUFFER_LEN];
35     int32_t sid;
36 sysadm 1.8 char master_list[(BBS_username_max_len + 1) * 3 + 1];
37 sysadm 1.1 SECTION_LIST *p_section;
38 sysadm 1.34 char ex_menu_conf[FILE_PATH_LEN];
39     MENU_SET ex_menu_set_new;
40 sysadm 1.23 int ret = 0;
41 sysadm 1.1
42 sysadm 1.2 db = db_open();
43     if (db == NULL)
44     {
45     log_error("db_open() error: %s\n", mysql_error(db));
46 sysadm 1.23 ret = -1;
47     goto cleanup;
48 sysadm 1.2 }
49    
50 sysadm 1.1 snprintf(sql, sizeof(sql),
51 sysadm 1.2 "SELECT section_config.SID, sname, section_config.title, section_config.CID, "
52 sysadm 1.34 "read_user_level, write_user_level, section_config.enable * section_class.enable AS enable, "
53     "UNIX_TIMESTAMP(ex_menu_tm) AS ex_menu_tm "
54 sysadm 1.2 "FROM section_config INNER JOIN section_class ON section_config.CID = section_class.CID "
55 sysadm 1.1 "ORDER BY section_config.SID");
56    
57     if (mysql_query(db, sql) != 0)
58     {
59     log_error("Query section_list error: %s\n", mysql_error(db));
60 sysadm 1.23 ret = -2;
61     goto cleanup;
62 sysadm 1.1 }
63     if ((rs = mysql_store_result(db)) == NULL)
64     {
65     log_error("Get section_list data failed\n");
66 sysadm 1.23 ret = -2;
67     goto cleanup;
68 sysadm 1.1 }
69 sysadm 1.2
70     ret = 0;
71 sysadm 1.1 while ((row = mysql_fetch_row(rs)))
72     {
73     sid = atoi(row[0]);
74    
75     // Query section master
76     snprintf(sql, sizeof(sql),
77     "SELECT username FROM section_master "
78     "INNER JOIN user_list ON section_master.UID = user_list.UID "
79     "WHERE SID = %d AND section_master.enable AND (NOW() BETWEEN begin_dt AND end_dt) "
80 sysadm 1.8 "ORDER BY major DESC, begin_dt ASC LIMIT 3",
81 sysadm 1.1 sid);
82    
83     if (mysql_query(db, sql) != 0)
84     {
85     log_error("Query section_master error: %s\n", mysql_error(db));
86 sysadm 1.2 ret = -3;
87     break;
88 sysadm 1.1 }
89     if ((rs2 = mysql_store_result(db)) == NULL)
90     {
91     log_error("Get section_master data failed\n");
92 sysadm 1.2 ret = -3;
93     break;
94 sysadm 1.1 }
95 sysadm 1.8
96     master_list[0] = '\0';
97     while ((row2 = mysql_fetch_row(rs2)))
98 sysadm 1.1 {
99 sysadm 1.8 strncat(master_list, row2[0], sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
100     strncat(master_list, " ", sizeof(master_list) - 1 - strnlen(master_list, sizeof(master_list)));
101 sysadm 1.1 }
102     mysql_free_result(rs2);
103 sysadm 1.23 rs2 = NULL;
104 sysadm 1.1
105 sysadm 1.50 p_section = section_list_find_by_sid(sid);
106 sysadm 1.1
107     if (p_section == NULL)
108     {
109 sysadm 1.8 p_section = section_list_create(sid, row[1], row[2], master_list);
110 sysadm 1.1 if (p_section == NULL)
111     {
112 sysadm 1.2 log_error("section_list_create() error: load new section sid = %d sname = %s\n", sid, row[1]);
113     ret = -4;
114 sysadm 1.1 break;
115     }
116    
117     // acquire rw lock
118     ret = section_list_rw_lock(p_section);
119     if (ret < 0)
120     {
121     break;
122     }
123     }
124     else
125     {
126     // acquire rw lock
127     ret = section_list_rw_lock(p_section);
128     if (ret < 0)
129     {
130     break;
131     }
132    
133 sysadm 1.51 if (section_list_update(p_section, row[1], row[2], master_list) < 0)
134     {
135     log_error("section_list_update(sid=%d) error\n", p_section->sid);
136     ret = -4;
137     break;
138     }
139 sysadm 1.1 }
140    
141     p_section->class_id = atoi(row[3]);
142     p_section->read_user_level = atoi(row[4]);
143     p_section->write_user_level = atoi(row[5]);
144     p_section->enable = (int8_t)atoi(row[6]);
145    
146 sysadm 1.34 // Update gen_ex menu set
147 sysadm 1.46 if (update_gen_ex && p_section->enable && atol(row[7] == NULL ? "0" : row[7]) > p_section->ex_menu_tm)
148 sysadm 1.34 {
149     snprintf(ex_menu_conf, sizeof(ex_menu_conf), "%s/%d", VAR_GEN_EX_MENU_DIR, p_section->sid);
150    
151 sysadm 1.38 ret = load_menu(&ex_menu_set_new, ex_menu_conf);
152 sysadm 1.34 if (ret < 0)
153     {
154 sysadm 1.38 unload_menu(&ex_menu_set_new);
155     log_error("load_menu(%s) error: %d\n", ex_menu_conf, ret);
156 sysadm 1.34 }
157     else
158     {
159 sysadm 1.38 if (p_section->ex_menu_tm > 0)
160 sysadm 1.34 {
161 sysadm 1.38 unload_menu(&(p_section->ex_menu_set));
162 sysadm 1.34 }
163    
164 sysadm 1.38 ex_menu_set_new.allow_exit = 1; // Allow exit menu
165     memcpy(&(p_section->ex_menu_set), &ex_menu_set_new, sizeof(ex_menu_set_new));
166 sysadm 1.34
167 sysadm 1.38 p_section->ex_menu_tm = atol(row[7]);
168 sysadm 1.34 #ifdef _DEBUG
169 sysadm 1.38 log_common("Loaded gen_ex_menu of section %d [%s]\n", p_section->sid, p_section->sname);
170 sysadm 1.34 #endif
171     }
172     }
173    
174 sysadm 1.1 // release rw lock
175     ret = section_list_rw_unlock(p_section);
176     if (ret < 0)
177     {
178     break;
179     }
180     }
181 sysadm 1.23
182     cleanup:
183 sysadm 1.31 mysql_free_result(rs2);
184 sysadm 1.1 mysql_free_result(rs);
185 sysadm 1.2 mysql_close(db);
186    
187     return ret;
188 sysadm 1.1 }
189 sysadm 1.3
190 sysadm 1.9 int append_articles_from_db(int32_t start_aid, int global_lock, int article_count_limit)
191 sysadm 1.3 {
192 sysadm 1.23 MYSQL *db = NULL;
193     MYSQL_RES *rs = NULL;
194 sysadm 1.3 MYSQL_ROW row;
195     char sql[SQL_BUFFER_LEN];
196     ARTICLE article;
197 sysadm 1.5 ARTICLE *p_topic;
198 sysadm 1.3 SECTION_LIST *p_section = NULL;
199     int32_t last_sid = 0;
200 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
201 sysadm 1.9 int article_count = 0;
202 sysadm 1.3 int ret = 0;
203     int i;
204    
205     db = db_open();
206     if (db == NULL)
207     {
208     log_error("db_open() error: %s\n", mysql_error(db));
209 sysadm 1.23 ret = -1;
210     goto cleanup;
211 sysadm 1.3 }
212    
213     snprintf(sql, sizeof(sql),
214 sysadm 1.11 "SELECT bbs.AID, TID, SID, bbs.CID, UID, visible, excerption, ontop, `lock`, "
215     "transship, username, nickname, title, UNIX_TIMESTAMP(sub_dt) AS sub_dt, "
216 sysadm 1.16 "sub_ip, bbs_content.content "
217 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
218     "WHERE bbs.AID >= %d ORDER BY bbs.AID LIMIT %d",
219 sysadm 1.9 start_aid, article_count_limit);
220 sysadm 1.3
221     if (mysql_query(db, sql) != 0)
222     {
223     log_error("Query article list error: %s\n", mysql_error(db));
224 sysadm 1.23 ret = -2;
225     goto cleanup;
226 sysadm 1.3 }
227 sysadm 1.11 if ((rs = mysql_use_result(db)) == NULL)
228 sysadm 1.3 {
229     log_error("Get article list data failed\n");
230 sysadm 1.23 ret = -2;
231     goto cleanup;
232 sysadm 1.3 }
233    
234     // acquire global lock
235 sysadm 1.23 if (global_lock && (ret = section_list_rw_lock(NULL)) < 0)
236 sysadm 1.3 {
237 sysadm 1.23 log_error("section_list_rw_lock(sid = 0) error\n");
238     goto cleanup;
239 sysadm 1.3 }
240    
241     while ((row = mysql_fetch_row(rs)))
242     {
243 sysadm 1.22 memset(&article, 0, sizeof(ARTICLE));
244 sysadm 1.3
245     // copy data of article
246     i = 0;
247    
248     article.aid = atoi(row[i++]);
249     article.tid = atoi(row[i++]);
250     article.sid = atoi(row[i++]);
251     article.cid = atoi(row[i++]);
252     article.uid = atoi(row[i++]);
253     article.visible = (int8_t)atoi(row[i++]);
254     article.excerption = (int8_t)atoi(row[i++]);
255     article.ontop = (int8_t)atoi(row[i++]);
256     article.lock = (int8_t)atoi(row[i++]);
257 sysadm 1.5 article.transship = (int8_t)atoi(row[i++]);
258 sysadm 1.3
259     strncpy(article.username, row[i++], sizeof(article.username) - 1);
260     article.username[sizeof(article.username) - 1] = '\0';
261     strncpy(article.nickname, row[i++], sizeof(article.nickname) - 1);
262     article.nickname[sizeof(article.nickname) - 1] = '\0';
263     strncpy(article.title, row[i++], sizeof(article.title) - 1);
264     article.title[sizeof(article.title) - 1] = '\0';
265    
266     article.sub_dt = atol(row[i++]);
267    
268 sysadm 1.16 strncpy(sub_ip, row[i++], sizeof(sub_ip) - 1);
269     sub_ip[sizeof(sub_ip) - 1] = '\0';
270     ip_mask(sub_ip, 1, '*');
271    
272 sysadm 1.3 // release lock of last section if different from current one
273     if (!global_lock && article.sid != last_sid && last_sid != 0)
274     {
275     if ((ret = section_list_rw_unlock(p_section)) < 0)
276     {
277 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
278 sysadm 1.3 break;
279     }
280     }
281    
282 sysadm 1.50 if ((p_section = section_list_find_by_sid(article.sid)) == NULL)
283 sysadm 1.3 {
284     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", article.sid);
285 sysadm 1.4 ret = ERR_UNKNOWN_SECTION; // Unknown section found
286 sysadm 1.3 break;
287     }
288    
289 sysadm 1.5 if (article.visible != 0 && article.tid != 0)
290     {
291     // Check if topic article is visible
292     p_topic = article_block_find_by_aid(article.tid);
293     if (p_topic == NULL || p_topic->visible == 0)
294     {
295     // log_error("Set article (aid = %d) as invisible due to invisible or non-existing topic head\n", article.aid);
296     article.tid = 0;
297     article.visible = 0;
298     }
299     }
300    
301 sysadm 1.3 // acquire lock of current section if different from last one
302     if (!global_lock && article.sid != last_sid)
303     {
304 sysadm 1.4 if ((ret = section_list_rw_lock(p_section)) < 0)
305 sysadm 1.3 {
306 sysadm 1.11 log_error("section_list_rw_lock(sid=0) error\n");
307 sysadm 1.3 break;
308     }
309     }
310    
311     // append article to section list
312     last_sid = article.sid;
313    
314     if (section_list_append_article(p_section, &article) < 0)
315     {
316 sysadm 1.11 log_error("section_list_append_article(sid=%d, aid=%d) error\n",
317 sysadm 1.3 p_section->sid, article.aid);
318     ret = -3;
319     break;
320     }
321 sysadm 1.9
322     article_count++;
323    
324 sysadm 1.16 if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, &article, p_section, row[i++], sub_ip, 0) < 0)
325 sysadm 1.11 {
326     log_error("article_cache_generate(aid=%d, cid=%d) error\n", article.aid, article.cid);
327     ret = -4;
328     break;
329     }
330 sysadm 1.3 }
331    
332     // release lock of last section
333     if (!global_lock && last_sid != 0)
334     {
335     if ((ret = section_list_rw_unlock(p_section)) < 0)
336     {
337 sysadm 1.11 log_error("section_list_rw_unlock(sid=%d) error\n", p_section->sid);
338 sysadm 1.3 }
339     }
340    
341     // release global lock
342 sysadm 1.23 if (global_lock && (ret = section_list_rw_unlock(NULL)) < 0)
343 sysadm 1.3 {
344 sysadm 1.23 log_error("section_list_rw_unlock(sid=0) error\n");
345 sysadm 1.3 }
346    
347     cleanup:
348     mysql_free_result(rs);
349     mysql_close(db);
350    
351 sysadm 1.31 article_cache_cleanup();
352    
353 sysadm 1.9 return (ret < 0 ? ret : article_count);
354 sysadm 1.3 }
355 sysadm 1.4
356 sysadm 1.5 int set_last_article_op_log_from_db(void)
357     {
358 sysadm 1.23 MYSQL *db = NULL;
359     MYSQL_RES *rs = NULL;
360 sysadm 1.5 MYSQL_ROW row;
361     char sql[SQL_BUFFER_LEN];
362 sysadm 1.23 int ret = 0;
363 sysadm 1.5
364     db = db_open();
365     if (db == NULL)
366     {
367     log_error("db_open() error: %s\n", mysql_error(db));
368 sysadm 1.23 ret = -1;
369     goto cleanup;
370 sysadm 1.5 }
371    
372     snprintf(sql, sizeof(sql),
373     "SELECT MID FROM bbs_article_op ORDER BY MID DESC LIMIT 1");
374    
375     if (mysql_query(db, sql) != 0)
376     {
377     log_error("Query article op error: %s\n", mysql_error(db));
378 sysadm 1.23 ret = -2;
379     goto cleanup;
380 sysadm 1.5 }
381     if ((rs = mysql_store_result(db)) == NULL)
382     {
383     log_error("Get article op data failed\n");
384 sysadm 1.23 ret = -2;
385     goto cleanup;
386 sysadm 1.5 }
387    
388     if ((row = mysql_fetch_row(rs)))
389     {
390     last_article_op_log_mid = atoi(row[0]);
391     }
392    
393 sysadm 1.23 cleanup:
394 sysadm 1.5 mysql_free_result(rs);
395     mysql_close(db);
396    
397 sysadm 1.23 return (ret < 0 ? ret : last_article_op_log_mid);
398 sysadm 1.5 }
399    
400 sysadm 1.9 int apply_article_op_log_from_db(int op_count_limit)
401 sysadm 1.5 {
402 sysadm 1.23 MYSQL *db = NULL;
403     MYSQL_RES *rs = NULL, *rs2 = NULL;
404 sysadm 1.5 MYSQL_ROW row, row2;
405     char sql[SQL_BUFFER_LEN];
406     ARTICLE *p_article;
407     SECTION_LIST *p_section = NULL;
408     SECTION_LIST *p_section_dest;
409 sysadm 1.16 char sub_ip[IP_ADDR_LEN];
410 sysadm 1.5 int32_t last_sid = 0;
411     int32_t sid_dest;
412 sysadm 1.9 int op_count = 0;
413 sysadm 1.5 int ret = 0;
414    
415     db = db_open();
416     if (db == NULL)
417     {
418     log_error("db_open() error: %s\n", mysql_error(db));
419 sysadm 1.23 ret = -1;
420     goto cleanup;
421 sysadm 1.5 }
422    
423     snprintf(sql, sizeof(sql),
424     "SELECT MID, AID, type FROM bbs_article_op "
425 sysadm 1.9 "WHERE MID > %d AND type NOT IN ('A') "
426     "ORDER BY MID LIMIT %d",
427     last_article_op_log_mid, op_count_limit);
428 sysadm 1.5
429     if (mysql_query(db, sql) != 0)
430     {
431     log_error("Query article log error: %s\n", mysql_error(db));
432 sysadm 1.23 ret = -2;
433     goto cleanup;
434 sysadm 1.5 }
435     if ((rs = mysql_store_result(db)) == NULL)
436     {
437     log_error("Get article log data failed\n");
438 sysadm 1.23 ret = -2;
439     goto cleanup;
440 sysadm 1.5 }
441    
442     while ((row = mysql_fetch_row(rs)))
443     {
444     p_article = article_block_find_by_aid(atoi(row[1]));
445     if (p_article == NULL) // related article has not been appended yet
446     {
447     ret = -2;
448     break;
449     }
450    
451     // release lock of last section if different from current one
452     if (p_article->sid != last_sid && last_sid != 0)
453     {
454     if ((ret = section_list_rw_unlock(p_section)) < 0)
455     {
456     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
457     break;
458     }
459     }
460    
461 sysadm 1.50 if ((p_section = section_list_find_by_sid(p_article->sid)) == NULL)
462 sysadm 1.5 {
463     log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", p_article->sid);
464     ret = ERR_UNKNOWN_SECTION; // Unknown section found
465     break;
466     }
467    
468     // acquire lock of current section if different from last one
469     if (p_article->sid != last_sid)
470     {
471     if ((ret = section_list_rw_lock(p_section)) < 0)
472     {
473     log_error("section_list_rw_lock(sid = 0) error\n");
474     break;
475     }
476     }
477    
478     last_sid = p_article->sid;
479    
480     switch (row[2][0])
481     {
482     case 'A': // Add article
483     log_error("Operation type=A should not be found\n");
484     break;
485     case 'D': // Delete article
486     case 'X': // Delete article by Admin
487 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 0) < 0)
488 sysadm 1.5 {
489 sysadm 1.20 log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=0) error\n", p_section->sid, atoi(row[1]));
490     }
491     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
492     {
493     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
494 sysadm 1.5 }
495     break;
496     case 'S': // Restore article
497 sysadm 1.20 if (section_list_set_article_visible(p_section, atoi(row[1]), 1) < 0)
498     {
499     log_error("section_list_set_article_visible(sid=%d, aid=%d, visible=1) error\n", p_section->sid, atoi(row[1]));
500     }
501     if (section_list_calculate_page(p_section, atoi(row[1])) < 0)
502     {
503     log_error("section_list_calculate_page(aid=%d) error\n", atoi(row[1]));
504     }
505 sysadm 1.5 break;
506     case 'L': // Lock article
507     p_article->lock = 1;
508     break;
509     case 'U': // Unlock article
510     p_article->lock = 0;
511     break;
512     case 'M': // Modify article
513 sysadm 1.9 snprintf(sql, sizeof(sql),
514 sysadm 1.16 "SELECT bbs.CID, sub_ip, bbs_content.content "
515 sysadm 1.11 "FROM bbs INNER JOIN bbs_content ON bbs.CID = bbs_content.CID "
516     "WHERE bbs.AID = %d",
517 sysadm 1.9 p_article->aid);
518    
519     if (mysql_query(db, sql) != 0)
520     {
521     log_error("Query article error: %s\n", mysql_error(db));
522     ret = -3;
523     break;
524     }
525 sysadm 1.12 if ((rs2 = mysql_use_result(db)) == NULL)
526 sysadm 1.9 {
527     log_error("Get article data failed\n");
528     ret = -3;
529     break;
530     }
531     if ((row2 = mysql_fetch_row(rs2)))
532     {
533     p_article->cid = atoi(row2[0]);
534 sysadm 1.11
535 sysadm 1.16 strncpy(sub_ip, row2[1], sizeof(sub_ip) - 1);
536     sub_ip[sizeof(sub_ip) - 1] = '\0';
537     ip_mask(sub_ip, 1, '*');
538    
539     if (article_cache_generate(VAR_ARTICLE_CACHE_DIR, p_article, p_section, row2[2], sub_ip, 0) < 0)
540 sysadm 1.11 {
541     log_error("article_cache_generate(aid=%d, cid=%d) error\n", p_article->aid, p_article->cid);
542     ret = -4;
543     }
544 sysadm 1.9 }
545     else
546     {
547     p_article->cid = 0;
548     ret = -4;
549     }
550     mysql_free_result(rs2);
551 sysadm 1.23 rs2 = NULL;
552 sysadm 1.21
553     p_article->excerption = 0; // Set excerption = 0 implicitly in case of rare condition
554 sysadm 1.5 break;
555     case 'T': // Move article
556     snprintf(sql, sizeof(sql),
557     "SELECT SID FROM bbs WHERE AID = %d",
558     p_article->aid);
559    
560     if (mysql_query(db, sql) != 0)
561     {
562     log_error("Query article error: %s\n", mysql_error(db));
563     ret = -3;
564     break;
565     }
566     if ((rs2 = mysql_store_result(db)) == NULL)
567     {
568     log_error("Get article data failed\n");
569     ret = -3;
570     break;
571     }
572     if ((row2 = mysql_fetch_row(rs2)))
573     {
574     sid_dest = atoi(row2[0]);
575     }
576     else
577     {
578     sid_dest = 0;
579     ret = -4;
580     }
581     mysql_free_result(rs2);
582 sysadm 1.23 rs2 = NULL;
583 sysadm 1.5
584     if (sid_dest > 0 && sid_dest != p_article->sid)
585     {
586 sysadm 1.50 p_section_dest = section_list_find_by_sid(sid_dest);
587 sysadm 1.5 if (p_section_dest == NULL)
588     {
589     ret = ERR_UNKNOWN_SECTION;
590     break;
591     }
592 sysadm 1.6 // acquire lock of dest section
593     if ((ret = section_list_rw_lock(p_section_dest)) < 0)
594     {
595     log_error("section_list_rw_lock(sid = %d) error\n", p_section_dest);
596     break;
597     }
598 sysadm 1.5 // Move topic
599     if ((ret = section_list_move_topic(p_section, p_section_dest, p_article->aid)) < 0)
600     {
601 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",
602     p_section->sid, p_section_dest->sid, p_article->aid, ret);
603     }
604     // release lock of dest section
605     if (section_list_rw_unlock(p_section_dest) < 0)
606     {
607     log_error("section_list_rw_unlock(sid = %d) error\n", p_section_dest);
608     ret = -1;
609 sysadm 1.5 }
610     }
611     break;
612     case 'E': // Set article as excerption
613     p_article->excerption = 1;
614     break;
615     case 'O': // Unset article as excerption
616     p_article->excerption = 0;
617     break;
618     case 'F': // Set article on top
619     case 'V': // Unset article on top
620 sysadm 1.32 p_article->ontop = (row[2][0] == 'F' ? 1 : 0);
621     if (section_list_update_article_ontop(p_section, p_article) < 0)
622     {
623     log_error("section_list_update_article_ontop(sid=%d, aid=%d) error\n",
624     p_section->sid, p_article->aid);
625     }
626 sysadm 1.5 break;
627     case 'Z': // Set article as trnasship
628     p_article->transship = 1;
629     break;
630     default:
631     // log_error("Operation type=%s unknown, mid=%s\n", row[2], row[0]);
632     break;
633     }
634    
635     if (ret < 0)
636     {
637     break;
638     }
639    
640     // Update MID with last successfully proceeded article_op_log
641     last_article_op_log_mid = atoi(row[0]);
642 sysadm 1.9
643     op_count++;
644 sysadm 1.5 }
645    
646     // release lock of last section
647     if (last_sid != 0)
648     {
649     if ((ret = section_list_rw_unlock(p_section)) < 0)
650     {
651     log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
652     }
653     }
654    
655 sysadm 1.23 cleanup:
656     mysql_free_result(rs2);
657 sysadm 1.5 mysql_free_result(rs);
658     mysql_close(db);
659    
660 sysadm 1.9 return (ret < 0 ? ret : op_count);
661 sysadm 1.5 }
662    
663 sysadm 1.39 static void section_list_ex_menu_set_cleanup(void)
664     {
665     int i;
666    
667     for (i = 0; i < p_section_list_pool->section_count; i++)
668     {
669     if (p_section_list_pool->sections[i].ex_menu_tm > 0)
670     {
671     unload_menu(&(p_section_list_pool->sections[i].ex_menu_set));
672     }
673     }
674     }
675    
676 sysadm 1.4 int section_list_loader_launch(void)
677     {
678 sysadm 1.34 struct sigaction act = {0};
679 sysadm 1.4 int pid;
680     int ret;
681     int32_t last_aid;
682     int article_count;
683     int load_count;
684 sysadm 1.5 int last_mid;
685 sysadm 1.52 time_t tm_section_list_reload = 0;
686 sysadm 1.54 time_t tm_user_list_reload = time(NULL);
687     time_t tm_user_online_list_reload = time(NULL);
688 sysadm 1.4
689     if (section_list_loader_pid != 0)
690     {
691     log_error("section_list_loader already running, pid = %d\n", section_list_loader_pid);
692     return -2;
693     }
694    
695     pid = fork();
696    
697     if (pid > 0) // Parent process
698     {
699     SYS_child_process_count++;
700     section_list_loader_pid = pid;
701 sysadm 1.18 log_common("Section list loader process (pid = %d) start\n", pid);
702 sysadm 1.4 return 0;
703     }
704     else if (pid < 0) // Error
705     {
706     log_error("fork() error (%d)\n", errno);
707     return -1;
708     }
709    
710     // Child process
711     SYS_child_process_count = 0;
712    
713     // Detach menu in shared memory
714 sysadm 1.36 detach_menu_shm(&bbs_menu);
715 sysadm 1.49 detach_menu_shm(&top10_menu);
716 sysadm 1.4
717 sysadm 1.34 // Set signal handler
718 sysadm 1.58 act.sa_handler = SIG_IGN;
719 sysadm 1.38 if (sigaction(SIGHUP, &act, NULL) == -1)
720     {
721     log_error("set signal action of SIGHUP error: %d\n", errno);
722     }
723     act.sa_handler = SIG_DFL;
724 sysadm 1.34 if (sigaction(SIGCHLD, &act, NULL) == -1)
725     {
726     log_error("set signal action of SIGCHLD error: %d\n", errno);
727     }
728    
729 sysadm 1.4 // Do section data loader periodically
730     while (!SYS_server_exit)
731     {
732 sysadm 1.52 tm_section_list_reload = time(NULL);
733    
734 sysadm 1.38 if (SYS_conf_reload)
735 sysadm 1.4 {
736 sysadm 1.38 SYS_conf_reload = 0;
737 sysadm 1.4
738     // Load section config
739 sysadm 1.38 if (load_section_config_from_db(0) < 0)
740 sysadm 1.4 {
741 sysadm 1.38 log_error("load_section_config_from_db(0) error\n");
742 sysadm 1.4 }
743     else
744     {
745 sysadm 1.27 log_common("Reload section config successfully\n");
746 sysadm 1.4 }
747     }
748    
749     // Load section articles
750     article_count = article_block_article_count();
751    
752 sysadm 1.9 do
753 sysadm 1.4 {
754 sysadm 1.9 last_aid = article_block_last_aid();
755 sysadm 1.4
756 sysadm 1.9 if ((ret = append_articles_from_db(last_aid + 1, 0, LOAD_ARTICLE_COUNT_LIMIT)) < 0)
757 sysadm 1.4 {
758 sysadm 1.9 log_error("append_articles_from_db(%d, 0, %d) error\n", last_aid + 1, LOAD_ARTICLE_COUNT_LIMIT);
759    
760     if (ret == ERR_UNKNOWN_SECTION)
761     {
762 sysadm 1.38 SYS_conf_reload = 1; // Force reload section_list
763 sysadm 1.9 }
764 sysadm 1.4 }
765 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
766 sysadm 1.5
767     load_count = article_block_article_count() - article_count;
768     if (load_count > 0)
769     {
770 sysadm 1.17 log_common("Incrementally load %d articles, last_aid = %d\n", load_count, article_block_last_aid());
771 sysadm 1.5 }
772    
773 sysadm 1.38 if (SYS_conf_reload)
774 sysadm 1.5 {
775     continue;
776     }
777    
778     // Load article_op log
779     last_mid = last_article_op_log_mid;
780    
781 sysadm 1.9 do
782 sysadm 1.4 {
783 sysadm 1.9 if ((ret = apply_article_op_log_from_db(LOAD_ARTICLE_COUNT_LIMIT)) < 0)
784     {
785     log_error("apply_article_op_log_from_db() error\n");
786 sysadm 1.4
787 sysadm 1.9 if (ret == ERR_UNKNOWN_SECTION)
788     {
789 sysadm 1.38 SYS_conf_reload = 1; // Force reload section_list
790 sysadm 1.9 }
791 sysadm 1.4 }
792 sysadm 1.9 } while (ret == LOAD_ARTICLE_COUNT_LIMIT);
793 sysadm 1.4
794 sysadm 1.5 if (last_article_op_log_mid > last_mid)
795     {
796 sysadm 1.17 log_common("Proceeded %d article logs, last_mid = %d\n", last_article_op_log_mid - last_mid, last_article_op_log_mid);
797 sysadm 1.5 }
798    
799 sysadm 1.52 // Reload user list
800     if (time(NULL) - tm_user_list_reload >= BBS_user_list_load_interval)
801 sysadm 1.5 {
802 sysadm 1.53 if (user_list_pool_reload(0) < 0)
803 sysadm 1.52 {
804 sysadm 1.53 log_error("user_list_pool_reload(all_user) error\n");
805 sysadm 1.52 }
806 sysadm 1.55
807     if (user_stat_update() < 0)
808     {
809     log_error("user_stat_update() error\n");
810     }
811    
812 sysadm 1.52 tm_user_list_reload = time(NULL);
813 sysadm 1.5 }
814    
815 sysadm 1.53 // Reload user online list
816     if (time(NULL) - tm_user_online_list_reload >= BBS_user_online_list_load_interval)
817     {
818     if (user_list_pool_reload(1) < 0)
819     {
820     log_error("user_list_pool_reload(online_user) error\n");
821     }
822 sysadm 1.55
823 sysadm 1.53 tm_user_online_list_reload = time(NULL);
824     }
825    
826 sysadm 1.52 // Wait for BBS_section_list_load_interval seconds
827     while (!SYS_server_exit && time(NULL) - tm_section_list_reload < BBS_section_list_load_interval)
828 sysadm 1.5 {
829     sleep(1);
830 sysadm 1.4 }
831     }
832    
833     // Child process exit
834    
835 sysadm 1.31 article_cache_cleanup();
836    
837 sysadm 1.34 // gen_ex_menu cleanup
838     section_list_ex_menu_set_cleanup();
839 sysadm 1.37
840 sysadm 1.4 // Detach data pools shm
841     detach_section_list_shm();
842     detach_article_block_shm();
843     detach_trie_dict_shm();
844 sysadm 1.52 detach_user_list_pool_shm();
845 sysadm 1.4
846 sysadm 1.17 log_common("Section list loader process exit normally\n");
847 sysadm 1.4 log_end();
848    
849     section_list_loader_pid = 0;
850    
851     _exit(0);
852    
853     return 0;
854     }
855    
856 sysadm 1.33 int query_section_articles(SECTION_LIST *p_section, int page_id, ARTICLE *p_articles[],
857     int *p_article_count, int *p_page_count, int *p_ontop_start_offset)
858 sysadm 1.7 {
859     ARTICLE *p_article;
860     ARTICLE *p_next_page_first_article;
861     int ret = 0;
862 sysadm 1.32 int i;
863 sysadm 1.7
864 sysadm 1.33 if (p_section == NULL || p_articles == NULL || p_article_count == NULL || p_page_count == NULL || p_ontop_start_offset == NULL)
865 sysadm 1.7 {
866 sysadm 1.34 log_error("NULL pointer error\n");
867 sysadm 1.7 return -1;
868     }
869    
870     // acquire lock of section
871     if ((ret = section_list_rd_lock(p_section)) < 0)
872     {
873     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
874     return -2;
875     }
876    
877 sysadm 1.32 *p_page_count = section_list_page_count_with_ontop(p_section);
878     *p_article_count = 0;
879 sysadm 1.33 *p_ontop_start_offset = BBS_article_limit_per_page;
880 sysadm 1.10
881 sysadm 1.9 if (p_section->visible_article_count == 0)
882     {
883 sysadm 1.32 // empty section
884 sysadm 1.9 }
885 sysadm 1.32 else if (page_id < 0 || page_id >= *p_page_count)
886 sysadm 1.7 {
887 sysadm 1.60 #ifdef _DEBUG
888 sysadm 1.32 log_error("Invalid page_id=%d, not in range [0, %d)\n", page_id, *p_page_count);
889 sysadm 1.60 #endif
890 sysadm 1.7 ret = -3;
891     }
892     else
893     {
894     ret = page_id;
895    
896 sysadm 1.32 if (page_id <= p_section->page_count - 1)
897 sysadm 1.7 {
898 sysadm 1.32 p_article = p_section->p_page_first_article[page_id];
899     p_next_page_first_article =
900     (page_id == p_section->page_count - 1 ? p_section->p_article_head : p_section->p_page_first_article[page_id + 1]);
901    
902     do
903     {
904     if (p_article->visible)
905     {
906     p_articles[*p_article_count] = p_article;
907     (*p_article_count)++;
908     }
909     p_article = p_article->p_next;
910     } while (p_article != p_next_page_first_article && (*p_article_count) <= BBS_article_limit_per_page);
911    
912     if (*p_article_count != (page_id < p_section->page_count - 1 ? BBS_article_limit_per_page : p_section->last_page_visible_article_count))
913 sysadm 1.7 {
914 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);
915 sysadm 1.7 }
916 sysadm 1.32 }
917 sysadm 1.8
918 sysadm 1.33 *p_ontop_start_offset = *p_article_count;
919    
920 sysadm 1.32 // Append ontop articles
921     if (page_id >= p_section->page_count - 1)
922 sysadm 1.8 {
923 sysadm 1.32 i = (page_id == p_section->page_count - 1
924     ? 0
925     : (page_id - p_section->page_count + 1) * BBS_article_limit_per_page - p_section->last_page_visible_article_count);
926     while (*p_article_count < BBS_article_limit_per_page && i < p_section->ontop_article_count)
927     {
928 sysadm 1.59 p_articles[*p_article_count] = p_section->p_ontop_articles[i++];
929     (*p_article_count)++;
930 sysadm 1.32 }
931 sysadm 1.8 }
932 sysadm 1.7 }
933    
934     // release lock of section
935 sysadm 1.8 if (section_list_rd_unlock(p_section) < 0)
936 sysadm 1.7 {
937     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
938     ret = -2;
939     }
940    
941     return ret;
942     }
943 sysadm 1.14
944 sysadm 1.24 int locate_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, int direction, int step,
945 sysadm 1.15 int *p_page_id, int *p_visible_offset, int *p_article_count)
946 sysadm 1.14 {
947 sysadm 1.15 const ARTICLE *p_article = NULL;
948 sysadm 1.40 const ARTICLE *p_article_last = NULL;
949 sysadm 1.15 ARTICLE *p_tmp;
950 sysadm 1.14 int32_t aid = 0;
951 sysadm 1.24 int page_id = 0;
952     int offset = 0;
953 sysadm 1.14 int ret = 0;
954 sysadm 1.15 int i;
955 sysadm 1.14
956 sysadm 1.15 if (p_section == NULL || p_article_cur == NULL || p_page_id == NULL || p_visible_offset == NULL || p_article_count == NULL)
957 sysadm 1.14 {
958 sysadm 1.34 log_error("NULL pointer error\n");
959 sysadm 1.14 return -1;
960     }
961    
962     // acquire lock of section
963     if ((ret = section_list_rd_lock(p_section)) < 0)
964     {
965     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
966     return -2;
967     }
968    
969     if (direction == 0)
970     {
971     aid = p_article_cur->aid;
972     }
973     else if (direction == 1)
974     {
975 sysadm 1.43 for (p_article_last = p_article_cur, p_article = p_article_cur->p_topic_next;
976     step > 0 && p_article->aid > p_article_cur->aid;
977 sysadm 1.40 p_article = p_article->p_topic_next)
978 sysadm 1.14 {
979 sysadm 1.24 if (p_article->visible)
980     {
981     step--;
982 sysadm 1.40 p_article_last = p_article;
983 sysadm 1.24 }
984     }
985 sysadm 1.43 p_article = p_article_last;
986 sysadm 1.15
987 sysadm 1.25 aid = (p_article->aid > p_article_cur->aid && p_article->visible ? p_article->aid : 0);
988 sysadm 1.14 }
989     else if (direction == -1)
990     {
991 sysadm 1.43 for (p_article_last = p_article_cur, p_article = p_article_cur->p_topic_prior;
992     step > 0 && p_article->aid < p_article_cur->aid;
993 sysadm 1.40 p_article = p_article->p_topic_prior)
994 sysadm 1.14 {
995 sysadm 1.24 if (p_article->visible)
996     {
997     step--;
998 sysadm 1.40 p_article_last = p_article;
999 sysadm 1.24 }
1000     }
1001 sysadm 1.43 p_article = p_article_last;
1002 sysadm 1.15
1003 sysadm 1.25 aid = (p_article->aid < p_article_cur->aid && p_article->visible ? p_article->aid : 0);
1004 sysadm 1.14 }
1005    
1006 sysadm 1.15 p_article = NULL;
1007    
1008 sysadm 1.14 if (aid > 0)
1009     {
1010 sysadm 1.15 p_article = section_list_find_article_with_offset(p_section, aid, &page_id, &offset, &p_tmp);
1011 sysadm 1.14 if (p_article != NULL)
1012     {
1013 sysadm 1.60 *p_article_count = (page_id >= p_section->page_count - 1 ? p_section->last_page_visible_article_count : BBS_article_limit_per_page);
1014 sysadm 1.15
1015     p_article = p_section->p_page_first_article[page_id];
1016 sysadm 1.25 for (i = 0; i < *p_article_count && p_article != NULL;)
1017 sysadm 1.15 {
1018     if (p_article->visible)
1019     {
1020     if (p_article->aid == aid)
1021     {
1022     *p_page_id = page_id;
1023     *p_visible_offset = i;
1024     break;
1025     }
1026     i++;
1027     if (i >= *p_article_count)
1028     {
1029     log_error("Visible article (aid=%d) not found in page %d\n", aid, page_id);
1030     p_article = NULL;
1031 sysadm 1.25 break;
1032 sysadm 1.15 }
1033     }
1034 sysadm 1.61
1035 sysadm 1.15 p_article = p_article->p_next;
1036 sysadm 1.61 if (p_article == p_section->p_page_first_article[page_id])
1037     {
1038     log_error("Dead loop detected at page=%d, article_count=%d\n", page_id, *p_article_count);
1039     break;
1040     }
1041 sysadm 1.15 }
1042 sysadm 1.32
1043     // Include ontop articles
1044     *p_article_count = section_list_page_article_count_with_ontop(p_section, page_id);
1045 sysadm 1.14 }
1046     }
1047    
1048     // release lock of section
1049     if (section_list_rd_unlock(p_section) < 0)
1050     {
1051     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1052     ret = -2;
1053     }
1054    
1055     return (ret < 0 ? ret : (p_article == NULL ? 0 : 1));
1056     }
1057 sysadm 1.34
1058 sysadm 1.62 int last_article_in_section(SECTION_LIST *p_section, const ARTICLE **pp_article)
1059     {
1060     int ret = 0;
1061    
1062     const ARTICLE *p_article;
1063    
1064     if (p_section == NULL || pp_article == NULL)
1065     {
1066     log_error("NULL pointer error\n");
1067     return -1;
1068     }
1069    
1070     *pp_article = NULL;
1071    
1072     // acquire lock of section
1073     if ((ret = section_list_rd_lock(p_section)) < 0)
1074     {
1075     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1076     return -2;
1077     }
1078    
1079     for (p_article = p_section->p_article_tail;
1080     p_article && p_article != p_section->p_article_head && !p_article->visible;
1081     p_article = p_article->p_prior)
1082     ;
1083    
1084     if (p_article && p_article->visible)
1085     {
1086     *pp_article = p_article;
1087     ret = 1;
1088     }
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     }
1099    
1100 sysadm 1.44 int scan_unread_article_in_section(SECTION_LIST *p_section, const ARTICLE *p_article_cur, const ARTICLE **pp_article_unread)
1101     {
1102     ARTICLE *p_article;
1103     int ret = 0;
1104    
1105     if (p_section == NULL || p_article_cur == NULL || pp_article_unread == NULL)
1106     {
1107     log_error("NULL pointer error\n");
1108     return -1;
1109     }
1110    
1111     if (p_article_cur->sid != p_section->sid)
1112     {
1113     log_error("Inconsistent SID\n");
1114     return -1;
1115     }
1116    
1117     // acquire lock of section
1118     if ((ret = section_list_rd_lock(p_section)) < 0)
1119     {
1120     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1121     return -2;
1122     }
1123    
1124     *pp_article_unread = NULL;
1125    
1126     for (p_article = p_article_cur->p_next; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_next)
1127     {
1128 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))
1129 sysadm 1.44 {
1130     *pp_article_unread = p_article;
1131     break;
1132     }
1133     }
1134    
1135     // release lock of section
1136     if (section_list_rd_unlock(p_section) < 0)
1137     {
1138     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1139     return -2;
1140     }
1141    
1142     return (p_article != NULL && p_article != p_article_cur ? 1 : 0);
1143     }
1144    
1145 sysadm 1.56 int scan_article_in_section_by_uid(SECTION_LIST *p_section, const ARTICLE *p_article_cur,
1146     int direction, int32_t uid, const ARTICLE **pp_article)
1147     {
1148     ARTICLE *p_article;
1149     int ret = 0;
1150    
1151     if (p_section == NULL || p_article_cur == NULL || pp_article == NULL)
1152     {
1153     log_error("NULL pointer error\n");
1154     return -1;
1155     }
1156    
1157     if (p_article_cur->sid != p_section->sid)
1158     {
1159     log_error("Inconsistent SID\n");
1160     return -1;
1161     }
1162    
1163     // acquire lock of section
1164     if ((ret = section_list_rd_lock(p_section)) < 0)
1165     {
1166     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1167     return -2;
1168     }
1169    
1170     *pp_article = NULL;
1171    
1172     if (direction >= 0)
1173     {
1174     for (p_article = p_article_cur->p_next; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_next)
1175     {
1176     if (p_article->visible && p_article->uid == uid)
1177     {
1178     *pp_article = p_article;
1179     break;
1180     }
1181     }
1182     }
1183     else // direction < 0
1184     {
1185     for (p_article = p_article_cur->p_prior; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_prior)
1186     {
1187     if (p_article->visible && p_article->uid == uid)
1188     {
1189     *pp_article = p_article;
1190     break;
1191     }
1192     }
1193     }
1194    
1195     // release lock of section
1196     if (section_list_rd_unlock(p_section) < 0)
1197     {
1198     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1199     return -2;
1200     }
1201    
1202     return (p_article != NULL && p_article != p_article_cur ? 1 : 0);
1203     }
1204    
1205     int scan_article_in_section_by_username(SECTION_LIST *p_section, const ARTICLE *p_article_cur,
1206     int direction, const char *username, const ARTICLE **pp_article)
1207     {
1208     ARTICLE *p_article;
1209     int ret = 0;
1210    
1211     if (p_section == NULL || p_article_cur == NULL || username == NULL || pp_article == NULL)
1212     {
1213     log_error("NULL pointer error\n");
1214     return -1;
1215     }
1216    
1217     if (p_article_cur->sid != p_section->sid)
1218     {
1219     log_error("Inconsistent SID\n");
1220     return -1;
1221     }
1222    
1223     // acquire lock of section
1224     if ((ret = section_list_rd_lock(p_section)) < 0)
1225     {
1226     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1227     return -2;
1228     }
1229    
1230     *pp_article = NULL;
1231    
1232     if (direction >= 0)
1233     {
1234     for (p_article = p_article_cur->p_next; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_next)
1235     {
1236     if (p_article->visible && strcasecmp(p_article->username, username) == 0)
1237     {
1238     *pp_article = p_article;
1239     break;
1240     }
1241     }
1242     }
1243     else // direction < 0
1244     {
1245     for (p_article = p_article_cur->p_prior; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_prior)
1246     {
1247     if (p_article->visible && strcasecmp(p_article->username, username) == 0)
1248     {
1249     *pp_article = p_article;
1250     break;
1251     }
1252     }
1253     }
1254    
1255     // release lock of section
1256     if (section_list_rd_unlock(p_section) < 0)
1257     {
1258     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1259     return -2;
1260     }
1261    
1262     return (p_article != NULL && p_article != p_article_cur ? 1 : 0);
1263     }
1264    
1265 sysadm 1.57 int scan_article_in_section_by_title(SECTION_LIST *p_section, const ARTICLE *p_article_cur,
1266 sysadm 1.61 int direction, const char *title, const ARTICLE **pp_article)
1267 sysadm 1.57 {
1268     ARTICLE *p_article;
1269     int ret = 0;
1270    
1271     if (p_section == NULL || p_article_cur == NULL || title == NULL || pp_article == NULL)
1272     {
1273     log_error("NULL pointer error\n");
1274     return -1;
1275     }
1276    
1277     if (p_article_cur->sid != p_section->sid)
1278     {
1279     log_error("Inconsistent SID\n");
1280     return -1;
1281     }
1282    
1283     // acquire lock of section
1284     if ((ret = section_list_rd_lock(p_section)) < 0)
1285     {
1286     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1287     return -2;
1288     }
1289    
1290     *pp_article = NULL;
1291    
1292     if (direction >= 0)
1293     {
1294     for (p_article = p_article_cur->p_next; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_next)
1295     {
1296     if (p_article->visible && strcasestr(p_article->title, title) != NULL)
1297     {
1298     *pp_article = p_article;
1299     break;
1300     }
1301     }
1302     }
1303     else // direction < 0
1304     {
1305     for (p_article = p_article_cur->p_prior; p_article != NULL && p_article != p_article_cur; p_article = p_article->p_prior)
1306     {
1307     if (p_article->visible && strcasestr(p_article->title, title) != NULL)
1308     {
1309     *pp_article = p_article;
1310     break;
1311     }
1312     }
1313     }
1314    
1315     // release lock of section
1316     if (section_list_rd_unlock(p_section) < 0)
1317     {
1318     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1319     return -2;
1320     }
1321    
1322     return (p_article != NULL && p_article != p_article_cur ? 1 : 0);
1323     }
1324    
1325 sysadm 1.34 int get_section_ex_menu_set(SECTION_LIST *p_section, MENU_SET *p_ex_menu_set)
1326     {
1327     int ret = 0;
1328    
1329     if (p_section == NULL || p_ex_menu_set == NULL)
1330     {
1331     log_error("NULL pointer error\n");
1332     return -1;
1333     }
1334    
1335     // acquire lock of section
1336     if ((ret = section_list_rd_lock(p_section)) < 0)
1337     {
1338     log_error("section_list_rd_lock(sid = %d) error\n", p_section->sid);
1339     return -2;
1340     }
1341    
1342     memcpy(p_ex_menu_set, &(p_section->ex_menu_set), sizeof(p_section->ex_menu_set));
1343    
1344     // release lock of section
1345     if (section_list_rd_unlock(p_section) < 0)
1346     {
1347     log_error("section_list_rd_unlock(sid = %d) error\n", p_section->sid);
1348     ret = -2;
1349     }
1350    
1351     return ret;
1352     }
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