lbbs/src/section_list_loader.c

/***************************************************************************
                                        section_list_loader.c  -  description
                                                         -------------------
        Copyright            : (C) 2004-2025 by Leaflet
        Email                : leaflet@leafok.com
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 3 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "section_list_loader.h"
#include "log.h"
#include "database.h"
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <strings.h>

int load_section_config_from_db(void)
{
        MYSQL *db;
        MYSQL_RES *rs, *rs2;
        MYSQL_ROW row, row2;
        char sql[SQL_BUFFER_LEN];
        int32_t sid;
        char master_name[BBS_username_max_len + 1];
        SECTION_LIST *p_section;
        int ret;

        db = db_open();
        if (db == NULL)
        {
                log_error("db_open() error: %s\n", mysql_error(db));
                return -2;
        }

        snprintf(sql, sizeof(sql),
                         "SELECT section_config.SID, sname, section_config.title, section_config.CID, "
                         "read_user_level, write_user_level, section_config.enable * section_class.enable AS enable "
                         "FROM section_config INNER JOIN section_class ON section_config.CID = section_class.CID "
                         "ORDER BY section_config.SID");

        if (mysql_query(db, sql) != 0)
        {
                log_error("Query section_list error: %s\n", mysql_error(db));
                return -3;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get section_list data failed\n");
                return -3;
        }

        ret = 0;
        while ((row = mysql_fetch_row(rs)))
        {
                sid = atoi(row[0]);

                // Query section master
                snprintf(sql, sizeof(sql),
                                 "SELECT username FROM section_master "
                                 "INNER JOIN user_list ON section_master.UID = user_list.UID "
                                 "WHERE SID = %d AND section_master.enable AND (NOW() BETWEEN begin_dt AND end_dt) "
                                 "ORDER BY major DESC LIMIT 1",
                                 sid);

                if (mysql_query(db, sql) != 0)
                {
                        log_error("Query section_master error: %s\n", mysql_error(db));
                        ret = -3;
                        break;
                }
                if ((rs2 = mysql_store_result(db)) == NULL)
                {
                        log_error("Get section_master data failed\n");
                        ret = -3;
                        break;
                }
                if ((row2 = mysql_fetch_row(rs2)))
                {
                        strncpy(master_name, row2[0], sizeof(master_name) - 1);
                        master_name[sizeof(master_name) - 1] = '\0';
                }
                else
                {
                        master_name[0] = '\0';
                }
                mysql_free_result(rs2);

                p_section = section_list_find_by_sid(sid);

                if (p_section == NULL)
                {
                        p_section = section_list_create(sid, row[1], row[2], "");
                        if (p_section == NULL)
                        {
                                log_error("section_list_create() error: load new section sid = %d sname = %s\n", sid, row[1]);
                                ret = -4;
                                break;
                        }

                        // acquire rw lock
                        ret = section_list_rw_lock(p_section);
                        if (ret < 0)
                        {
                                break;
                        }
                }
                else
                {
                        // acquire rw lock
                        ret = section_list_rw_lock(p_section);
                        if (ret < 0)
                        {
                                break;
                        }

                        strncpy(p_section->sname, row[1], sizeof(p_section->sname) - 1);
                        p_section->sname[sizeof(p_section->sname) - 1] = '\0';
                        strncpy(p_section->stitle, row[1], sizeof(p_section->stitle) - 1);
                        p_section->stitle[sizeof(p_section->stitle) - 1] = '\0';
                        strncpy(p_section->master_name, master_name, sizeof(p_section->master_name) - 1);
                        p_section->master_name[sizeof(p_section->master_name) - 1] = '\0';
                }

                p_section->class_id = atoi(row[3]);
                p_section->read_user_level = atoi(row[4]);
                p_section->write_user_level = atoi(row[5]);
                p_section->enable = (int8_t)atoi(row[6]);

                // release rw lock
                ret = section_list_rw_unlock(p_section);
                if (ret < 0)
                {
                        break;
                }
        }
        mysql_free_result(rs);

        mysql_close(db);

        return ret;
}

int append_articles_from_db(int32_t start_aid, int global_lock)
{
        MYSQL *db;
        MYSQL_RES *rs;
        MYSQL_ROW row;
        char sql[SQL_BUFFER_LEN];
        ARTICLE article;
        SECTION_LIST *p_section = NULL;
        int32_t last_sid = 0;
        int ret = 0;
        int i;

        db = db_open();
        if (db == NULL)
        {
                log_error("db_open() error: %s\n", mysql_error(db));
                return -2;
        }

        snprintf(sql, sizeof(sql),
                         "SELECT AID, TID, SID, CID, UID, visible, excerption, "
                         "ontop, `lock`, username, nickname, title, UNIX_TIMESTAMP(sub_dt) AS sub_dt "
                         "FROM bbs WHERE AID >= %d ORDER BY AID",
                         start_aid);

        if (mysql_query(db, sql) != 0)
        {
                log_error("Query article list error: %s\n", mysql_error(db));
                return -3;
        }
        if ((rs = mysql_use_result(db)) == NULL)
        {
                log_error("Get article list data failed\n");
                return -3;
        }

        // acquire global lock
        if (global_lock)
        {
                if ((ret = section_list_rw_lock(NULL)) < 0)
                {
                        log_error("section_list_rw_lock(sid = 0) error\n");
                        goto cleanup;
                }
        }

        while ((row = mysql_fetch_row(rs)))
        {
                bzero(&article, sizeof(ARTICLE));

                // copy data of article
                i = 0;

                article.aid = atoi(row[i++]);
                article.tid = atoi(row[i++]);
                article.sid = atoi(row[i++]);
                article.cid = atoi(row[i++]);
                article.uid = atoi(row[i++]);
                article.visible = (int8_t)atoi(row[i++]);
                article.excerption = (int8_t)atoi(row[i++]);
                article.ontop = (int8_t)atoi(row[i++]);
                article.lock = (int8_t)atoi(row[i++]);

                strncpy(article.username, row[i++], sizeof(article.username) - 1);
                article.username[sizeof(article.username) - 1] = '\0';
                strncpy(article.nickname, row[i++], sizeof(article.nickname) - 1);
                article.nickname[sizeof(article.nickname) - 1] = '\0';
                strncpy(article.title, row[i++], sizeof(article.title) - 1);
                article.title[sizeof(article.title) - 1] = '\0';

                article.sub_dt = atol(row[i++]);

                // release lock of last section if different from current one
                if (!global_lock && article.sid != last_sid && last_sid != 0)
                {
                        if ((ret = section_list_rw_unlock(p_section)) < 0)
                        {
                                log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
                                break;
                        }
                }

                if ((p_section = section_list_find_by_sid(article.sid)) == NULL)
                {
                        log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", article.sid);
                        ret = -4; // known section found
                        break;
                }

                // acquire lock of current section if different from last one
                if (!global_lock && article.sid != last_sid)
                {
                        if ((ret = section_list_rw_lock(NULL)) < 0)
                        {
                                log_error("section_list_rw_lock(sid = 0) error\n");
                                break;
                        }
                }

                // append article to section list
                last_sid = article.sid;

                if (section_list_append_article(p_section, &article) < 0)
                {
                        log_error("section_list_append_article(sid = %d, aid = %d) error\n",
                                          p_section->sid, article.aid);
                        ret = -3;
                        break;
                }
        }

        // release lock of last section
        if (!global_lock && last_sid != 0)
        {
                if ((ret = section_list_rw_unlock(p_section)) < 0)
                {
                        log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
                }
        }

        // release global lock
        if (global_lock)
        {
                if ((ret = section_list_rw_unlock(NULL)) < 0)
                {
                        log_error("section_list_rw_unlock(sid = 0) error\n");
                }
        }

cleanup:
        mysql_free_result(rs);

        mysql_close(db);

        return ret;
}
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	#include "section_list_loader.h"
18	#include "log.h"
19	#include "database.h"
20	#include <stdio.h>
21	#include <string.h>
22	#include <errno.h>
23	#include <stdlib.h>
24	#include <strings.h>
25
26	int load_section_config_from_db(void)
27	{
28	MYSQL *db;
29	MYSQL_RES rs, rs2;
30	MYSQL_ROW row, row2;
31	char sql[SQL_BUFFER_LEN];
32	int32_t sid;
33	char master_name[BBS_username_max_len + 1];
34	SECTION_LIST *p_section;
35	int ret;
36
37	db = db_open();
38	if (db == NULL)
39	{
40	log_error("db_open() error: %s\n", mysql_error(db));
41	return -2;
42	}
43
44	snprintf(sql, sizeof(sql),
45	"SELECT section_config.SID, sname, section_config.title, section_config.CID, "
46	"read_user_level, write_user_level, section_config.enable * section_class.enable AS enable "
47	"FROM section_config INNER JOIN section_class ON section_config.CID = section_class.CID "
48	"ORDER BY section_config.SID");
49
50	if (mysql_query(db, sql) != 0)
51	{
52	log_error("Query section_list error: %s\n", mysql_error(db));
53	return -3;
54	}
55	if ((rs = mysql_store_result(db)) == NULL)
56	{
57	log_error("Get section_list data failed\n");
58	return -3;
59	}
60
61	ret = 0;
62	while ((row = mysql_fetch_row(rs)))
63	{
64	sid = atoi(row[0]);
65
66	// Query section master
67	snprintf(sql, sizeof(sql),
68	"SELECT username FROM section_master "
69	"INNER JOIN user_list ON section_master.UID = user_list.UID "
70	"WHERE SID = %d AND section_master.enable AND (NOW() BETWEEN begin_dt AND end_dt) "
71	"ORDER BY major DESC LIMIT 1",
72	sid);
73
74	if (mysql_query(db, sql) != 0)
75	{
76	log_error("Query section_master error: %s\n", mysql_error(db));
77	ret = -3;
78	break;
79	}
80	if ((rs2 = mysql_store_result(db)) == NULL)
81	{
82	log_error("Get section_master data failed\n");
83	ret = -3;
84	break;
85	}
86	if ((row2 = mysql_fetch_row(rs2)))
87	{
88	strncpy(master_name, row2[0], sizeof(master_name) - 1);
89	master_name[sizeof(master_name) - 1] = '\0';
90	}
91	else
92	{
93	master_name[0] = '\0';
94	}
95	mysql_free_result(rs2);
96
97	p_section = section_list_find_by_sid(sid);
98
99	if (p_section == NULL)
100	{
101	p_section = section_list_create(sid, row[1], row[2], "");
102	if (p_section == NULL)
103	{
104	log_error("section_list_create() error: load new section sid = %d sname = %s\n", sid, row[1]);
105	ret = -4;
106	break;
107	}
108
109	// acquire rw lock
110	ret = section_list_rw_lock(p_section);
111	if (ret < 0)
112	{
113	break;
114	}
115	}
116	else
117	{
118	// acquire rw lock
119	ret = section_list_rw_lock(p_section);
120	if (ret < 0)
121	{
122	break;
123	}
124
125	strncpy(p_section->sname, row[1], sizeof(p_section->sname) - 1);
126	p_section->sname[sizeof(p_section->sname) - 1] = '\0';
127	strncpy(p_section->stitle, row[1], sizeof(p_section->stitle) - 1);
128	p_section->stitle[sizeof(p_section->stitle) - 1] = '\0';
129	strncpy(p_section->master_name, master_name, sizeof(p_section->master_name) - 1);
130	p_section->master_name[sizeof(p_section->master_name) - 1] = '\0';
131	}
132
133	p_section->class_id = atoi(row[3]);
134	p_section->read_user_level = atoi(row[4]);
135	p_section->write_user_level = atoi(row[5]);
136	p_section->enable = (int8_t)atoi(row[6]);
137
138	// release rw lock
139	ret = section_list_rw_unlock(p_section);
140	if (ret < 0)
141	{
142	break;
143	}
144	}
145	mysql_free_result(rs);
146
147	mysql_close(db);
148
149	return ret;
150	}
151
152	int append_articles_from_db(int32_t start_aid, int global_lock)
153	{
154	MYSQL *db;
155	MYSQL_RES *rs;
156	MYSQL_ROW row;
157	char sql[SQL_BUFFER_LEN];
158	ARTICLE article;
159	SECTION_LIST *p_section = NULL;
160	int32_t last_sid = 0;
161	int ret = 0;
162	int i;
163
164	db = db_open();
165	if (db == NULL)
166	{
167	log_error("db_open() error: %s\n", mysql_error(db));
168	return -2;
169	}
170
171	snprintf(sql, sizeof(sql),
172	"SELECT AID, TID, SID, CID, UID, visible, excerption, "
173	"ontop, `lock`, username, nickname, title, UNIX_TIMESTAMP(sub_dt) AS sub_dt "
174	"FROM bbs WHERE AID >= %d ORDER BY AID",
175	start_aid);
176
177	if (mysql_query(db, sql) != 0)
178	{
179	log_error("Query article list error: %s\n", mysql_error(db));
180	return -3;
181	}
182	if ((rs = mysql_use_result(db)) == NULL)
183	{
184	log_error("Get article list data failed\n");
185	return -3;
186	}
187
188	// acquire global lock
189	if (global_lock)
190	{
191	if ((ret = section_list_rw_lock(NULL)) < 0)
192	{
193	log_error("section_list_rw_lock(sid = 0) error\n");
194	goto cleanup;
195	}
196	}
197
198	while ((row = mysql_fetch_row(rs)))
199	{
200	bzero(&article, sizeof(ARTICLE));
201
202	// copy data of article
203	i = 0;
204
205	article.aid = atoi(row[i++]);
206	article.tid = atoi(row[i++]);
207	article.sid = atoi(row[i++]);
208	article.cid = atoi(row[i++]);
209	article.uid = atoi(row[i++]);
210	article.visible = (int8_t)atoi(row[i++]);
211	article.excerption = (int8_t)atoi(row[i++]);
212	article.ontop = (int8_t)atoi(row[i++]);
213	article.lock = (int8_t)atoi(row[i++]);
214
215	strncpy(article.username, row[i++], sizeof(article.username) - 1);
216	article.username[sizeof(article.username) - 1] = '\0';
217	strncpy(article.nickname, row[i++], sizeof(article.nickname) - 1);
218	article.nickname[sizeof(article.nickname) - 1] = '\0';
219	strncpy(article.title, row[i++], sizeof(article.title) - 1);
220	article.title[sizeof(article.title) - 1] = '\0';
221
222	article.sub_dt = atol(row[i++]);
223
224	// release lock of last section if different from current one
225	if (!global_lock && article.sid != last_sid && last_sid != 0)
226	{
227	if ((ret = section_list_rw_unlock(p_section)) < 0)
228	{
229	log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
230	break;
231	}
232	}
233
234	if ((p_section = section_list_find_by_sid(article.sid)) == NULL)
235	{
236	log_error("section_list_find_by_sid(%d) error: unknown section, try reloading section config\n", article.sid);
237	ret = -4; // known section found
238	break;
239	}
240
241	// acquire lock of current section if different from last one
242	if (!global_lock && article.sid != last_sid)
243	{
244	if ((ret = section_list_rw_lock(NULL)) < 0)
245	{
246	log_error("section_list_rw_lock(sid = 0) error\n");
247	break;
248	}
249	}
250
251	// append article to section list
252	last_sid = article.sid;
253
254	if (section_list_append_article(p_section, &article) < 0)
255	{
256	log_error("section_list_append_article(sid = %d, aid = %d) error\n",
257	p_section->sid, article.aid);
258	ret = -3;
259	break;
260	}
261	}
262
263	// release lock of last section
264	if (!global_lock && last_sid != 0)
265	{
266	if ((ret = section_list_rw_unlock(p_section)) < 0)
267	{
268	log_error("section_list_rw_unlock(sid = %d) error\n", p_section->sid);
269	}
270	}
271
272	// release global lock
273	if (global_lock)
274	{
275	if ((ret = section_list_rw_unlock(NULL)) < 0)
276	{
277	log_error("section_list_rw_unlock(sid = 0) error\n");
278	}
279	}
280
281	cleanup:
282	mysql_free_result(rs);
283
284	mysql_close(db);
285
286	return ret;
287	}
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