lbbs/src/user_priv.c

/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
 * user_priv
 *   - basic operations of user privilege
 *
 * Copyright (C) 2004-2026  Leaflet <leaflet@leafok.com>
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "bbs.h"
#include "common.h"
#include "database.h"
#include "log.h"
#include "user_priv.h"
#include <stdio.h>
#include <stdlib.h>
#include <mysql.h>

BBS_user_priv BBS_priv;

inline static int search_priv(BBS_user_priv *p_priv, int sid, int *p_offset)
{
        int left = 0;
        int right = p_priv->s_count - 1;
        int mid = 0;

        while (left < right)
        {
                mid = (left + right) / 2;

                if (sid < p_priv->s_priv_list[mid].sid)
                {
                        right = mid - 1;
                }
                else if (sid > p_priv->s_priv_list[mid].sid)
                {
                        left = mid + 1;
                }
                else // if (sid == p_priv->s_priv_list[mid].sid)
                {
                        left = mid;
                        break;
                }
        }

        *p_offset = left;

        return (sid == p_priv->s_priv_list[left].sid);
}

int setpriv(BBS_user_priv *p_priv, int sid, int priv, int is_favor)
{
        int offset;
        int i;

        if (sid == 0)
        {
                p_priv->g_priv = priv;
                return 0;
        }

        if (search_priv(p_priv, sid, &offset)) // found
        {
                p_priv->s_priv_list[offset].s_priv = priv;
                p_priv->s_priv_list[offset].is_favor = is_favor;
                return 0;
        }

        // not found
        if (p_priv->s_count >= BBS_max_section)
        {
                return -1;
        }

        // move items at [left, p_priv->s_count - 1] to [left + 1, p_priv->s_count]
        for (i = p_priv->s_count - 1; i >= offset; i--)
        {
                p_priv->s_priv_list[i + 1] = p_priv->s_priv_list[i];
        }
        p_priv->s_count++;

        // insert new item at offset left
        p_priv->s_priv_list[offset].sid = sid;
        p_priv->s_priv_list[offset].s_priv = priv;
        p_priv->s_priv_list[offset].is_favor = is_favor;

        return 0;
}

int getpriv(BBS_user_priv *p_priv, int sid, int *p_is_favor)
{
        int offset;

        if (search_priv(p_priv, sid, &offset)) // found
        {
                *p_is_favor = p_priv->s_priv_list[offset].is_favor;
                return p_priv->s_priv_list[offset].s_priv;
        }

        *p_is_favor = 0;
        return (sid >= 0 ? p_priv->g_priv : S_NONE);
}

int load_priv(MYSQL *db, BBS_user_priv *p_priv, int uid)
{
        MYSQL_RES *rs;
        MYSQL_ROW row;
        char sql[SQL_BUFFER_LEN];
        int priv;
        int is_favor;

        p_priv->uid = uid;
        p_priv->level = (uid == 0 ? P_GUEST : P_USER);
        p_priv->g_priv = S_DEFAULT;
        p_priv->s_count = 0;

        if (db == NULL)
                return 1;

        // Permission
        snprintf(sql, sizeof(sql),
                         "SELECT p_post, p_msg FROM user_list WHERE UID = %d AND verified",
                         uid);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query user_list error: %s", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get user_list data failed");
                return -1;
        }
        if ((row = mysql_fetch_row(rs)))
        {
                p_priv->g_priv |= (atoi(row[0]) ? S_POST : 0);
                p_priv->g_priv |= (atoi(row[1]) ? S_MSG : 0);
        }
        mysql_free_result(rs);

        // Admin
        snprintf(sql, sizeof(sql),
                         "SELECT major FROM admin_config WHERE UID = %d "
                         "AND enable AND (NOW() BETWEEN begin_dt AND end_dt)",
                         uid);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query admin_config error: %s", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get admin_config data failed");
                return -1;
        }
        if ((row = mysql_fetch_row(rs)))
        {
                p_priv->level |= (atoi(row[0]) ? P_ADMIN_M : P_ADMIN_S);
                p_priv->g_priv |= (atoi(row[0]) ? S_ALL : S_ADMIN);
        }
        mysql_free_result(rs);

        // Section Master
        snprintf(sql, sizeof(sql),
                         "SELECT section_master.SID, major FROM section_master "
                         "INNER JOIN section_config ON section_master.SID = section_config.SID "
                         "WHERE UID = %d AND section_master.enable AND section_config.enable "
                         "AND (NOW() BETWEEN begin_dt AND end_dt)",
                         uid);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query section_master error: %s", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get section_master data failed");
                return -1;
        }
        while ((row = mysql_fetch_row(rs)))
        {
                p_priv->level |= (atoi(row[1]) ? P_MAN_M : P_MAN_S);
                priv = (getpriv(p_priv, atoi(row[0]), &is_favor) | (atoi(row[1]) ? S_MAN_M : S_MAN_S));
                setpriv(p_priv, atoi(row[0]), priv, is_favor);
        }
        mysql_free_result(rs);

        // Section status
        snprintf(sql, sizeof(sql),
                         "SELECT SID, exp_get, read_user_level, write_user_level FROM section_config "
                         "INNER JOIN section_class ON section_config.CID = section_class.CID "
                         "WHERE section_config.enable AND section_class.enable "
                         "ORDER BY SID");
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query section_config error: %s", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get section_config data failed");
                return -1;
        }
        while ((row = mysql_fetch_row(rs)))
        {
                int priv = getpriv(p_priv, atoi(row[0]), &is_favor);
                if (p_priv->level < atoi(row[2]))
                {
                        priv &= (~S_LIST);
                }
                if (p_priv->level < atoi(row[3]))
                {
                        priv &= (~S_POST);
                }
                if (!atoi(row[1]))
                {
                        priv &= (~S_GETEXP);
                }
                setpriv(p_priv, atoi(row[0]), priv, is_favor);
        }
        mysql_free_result(rs);

        // Section ban
        snprintf(sql, sizeof(sql),
                         "SELECT SID FROM ban_user_list WHERE UID = %d AND enable "
                         "AND (NOW() BETWEEN ban_dt AND unban_dt)",
                         uid);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query ban_user_list error: %s", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get ban_user_list data failed");
                return -1;
        }
        while ((row = mysql_fetch_row(rs)))
        {
                priv = getpriv(p_priv, atoi(row[0]), &is_favor) & (~S_POST);
                setpriv(p_priv, atoi(row[0]), priv, is_favor);
        }
        mysql_free_result(rs);

        // User favor section
        snprintf(sql, sizeof(sql),
                         "SELECT SID FROM section_favorite WHERE UID = %d",
                         uid);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query section_favorite error: %s", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get section_favorite data failed");
                return -1;
        }
        while ((row = mysql_fetch_row(rs)))
        {
                priv = getpriv(p_priv, atoi(row[0]), &is_favor);
                if (!is_favor)
                {
                        setpriv(p_priv, atoi(row[0]), priv, 1);
                        priv = getpriv(p_priv, atoi(row[0]), &is_favor);
                }
        }
        mysql_free_result(rs);

        return 0;
}
1	/* SPDX-License-Identifier: GPL-3.0-or-later */
2	/*
3	* user_priv
4	* - basic operations of user privilege
5	*
6	* Copyright (C) 2004-2026 Leaflet <leaflet@leafok.com>
7	*/
8
9	#ifdef HAVE_CONFIG_H
10	#include "config.h"
11	#endif
12
13	#include "bbs.h"
14	#include "common.h"
15	#include "database.h"
16	#include "log.h"
17	#include "user_priv.h"
18	#include <stdio.h>
19	#include <stdlib.h>
20	#include <mysql.h>
21
22	BBS_user_priv BBS_priv;
23
24	inline static int search_priv(BBS_user_priv p_priv, int sid, int p_offset)
25	{
26	int left = 0;
27	int right = p_priv->s_count - 1;
28	int mid = 0;
29
30	while (left < right)
31	{
32	mid = (left + right) / 2;
33
34	if (sid < p_priv->s_priv_list[mid].sid)
35	{
36	right = mid - 1;
37	}
38	else if (sid > p_priv->s_priv_list[mid].sid)
39	{
40	left = mid + 1;
41	}
42	else // if (sid == p_priv->s_priv_list[mid].sid)
43	{
44	left = mid;
45	break;
46	}
47	}
48
49	*p_offset = left;
50
51	return (sid == p_priv->s_priv_list[left].sid);
52	}
53
54	int setpriv(BBS_user_priv *p_priv, int sid, int priv, int is_favor)
55	{
56	int offset;
57	int i;
58
59	if (sid == 0)
60	{
61	p_priv->g_priv = priv;
62	return 0;
63	}
64
65	if (search_priv(p_priv, sid, &offset)) // found
66	{
67	p_priv->s_priv_list[offset].s_priv = priv;
68	p_priv->s_priv_list[offset].is_favor = is_favor;
69	return 0;
70	}
71
72	// not found
73	if (p_priv->s_count >= BBS_max_section)
74	{
75	return -1;
76	}
77
78	// move items at [left, p_priv->s_count - 1] to [left + 1, p_priv->s_count]
79	for (i = p_priv->s_count - 1; i >= offset; i--)
80	{
81	p_priv->s_priv_list[i + 1] = p_priv->s_priv_list[i];
82	}
83	p_priv->s_count++;
84
85	// insert new item at offset left
86	p_priv->s_priv_list[offset].sid = sid;
87	p_priv->s_priv_list[offset].s_priv = priv;
88	p_priv->s_priv_list[offset].is_favor = is_favor;
89
90	return 0;
91	}
92
93	int getpriv(BBS_user_priv p_priv, int sid, int p_is_favor)
94	{
95	int offset;
96
97	if (search_priv(p_priv, sid, &offset)) // found
98	{
99	*p_is_favor = p_priv->s_priv_list[offset].is_favor;
100	return p_priv->s_priv_list[offset].s_priv;
101	}
102
103	*p_is_favor = 0;
104	return (sid >= 0 ? p_priv->g_priv : S_NONE);
105	}
106
107	int load_priv(MYSQL db, BBS_user_priv p_priv, int uid)
108	{
109	MYSQL_RES *rs;
110	MYSQL_ROW row;
111	char sql[SQL_BUFFER_LEN];
112	int priv;
113	int is_favor;
114
115	p_priv->uid = uid;
116	p_priv->level = (uid == 0 ? P_GUEST : P_USER);
117	p_priv->g_priv = S_DEFAULT;
118	p_priv->s_count = 0;
119
120	if (db == NULL)
121	return 1;
122
123	// Permission
124	snprintf(sql, sizeof(sql),
125	"SELECT p_post, p_msg FROM user_list WHERE UID = %d AND verified",
126	uid);
127	if (mysql_query(db, sql) != 0)
128	{
129	log_error("Query user_list error: %s", mysql_error(db));
130	return -1;
131	}
132	if ((rs = mysql_store_result(db)) == NULL)
133	{
134	log_error("Get user_list data failed");
135	return -1;
136	}
137	if ((row = mysql_fetch_row(rs)))
138	{
139	p_priv->g_priv \|= (atoi(row[0]) ? S_POST : 0);
140	p_priv->g_priv \|= (atoi(row[1]) ? S_MSG : 0);
141	}
142	mysql_free_result(rs);
143
144	// Admin
145	snprintf(sql, sizeof(sql),
146	"SELECT major FROM admin_config WHERE UID = %d "
147	"AND enable AND (NOW() BETWEEN begin_dt AND end_dt)",
148	uid);
149	if (mysql_query(db, sql) != 0)
150	{
151	log_error("Query admin_config error: %s", mysql_error(db));
152	return -1;
153	}
154	if ((rs = mysql_store_result(db)) == NULL)
155	{
156	log_error("Get admin_config data failed");
157	return -1;
158	}
159	if ((row = mysql_fetch_row(rs)))
160	{
161	p_priv->level \|= (atoi(row[0]) ? P_ADMIN_M : P_ADMIN_S);
162	p_priv->g_priv \|= (atoi(row[0]) ? S_ALL : S_ADMIN);
163	}
164	mysql_free_result(rs);
165
166	// Section Master
167	snprintf(sql, sizeof(sql),
168	"SELECT section_master.SID, major FROM section_master "
169	"INNER JOIN section_config ON section_master.SID = section_config.SID "
170	"WHERE UID = %d AND section_master.enable AND section_config.enable "
171	"AND (NOW() BETWEEN begin_dt AND end_dt)",
172	uid);
173	if (mysql_query(db, sql) != 0)
174	{
175	log_error("Query section_master error: %s", mysql_error(db));
176	return -1;
177	}
178	if ((rs = mysql_store_result(db)) == NULL)
179	{
180	log_error("Get section_master data failed");
181	return -1;
182	}
183	while ((row = mysql_fetch_row(rs)))
184	{
185	p_priv->level \|= (atoi(row[1]) ? P_MAN_M : P_MAN_S);
186	priv = (getpriv(p_priv, atoi(row[0]), &is_favor) \| (atoi(row[1]) ? S_MAN_M : S_MAN_S));
187	setpriv(p_priv, atoi(row[0]), priv, is_favor);
188	}
189	mysql_free_result(rs);
190
191	// Section status
192	snprintf(sql, sizeof(sql),
193	"SELECT SID, exp_get, read_user_level, write_user_level FROM section_config "
194	"INNER JOIN section_class ON section_config.CID = section_class.CID "
195	"WHERE section_config.enable AND section_class.enable "
196	"ORDER BY SID");
197	if (mysql_query(db, sql) != 0)
198	{
199	log_error("Query section_config error: %s", mysql_error(db));
200	return -1;
201	}
202	if ((rs = mysql_store_result(db)) == NULL)
203	{
204	log_error("Get section_config data failed");
205	return -1;
206	}
207	while ((row = mysql_fetch_row(rs)))
208	{
209	int priv = getpriv(p_priv, atoi(row[0]), &is_favor);
210	if (p_priv->level < atoi(row[2]))
211	{
212	priv &= (~S_LIST);
213	}
214	if (p_priv->level < atoi(row[3]))
215	{
216	priv &= (~S_POST);
217	}
218	if (!atoi(row[1]))
219	{
220	priv &= (~S_GETEXP);
221	}
222	setpriv(p_priv, atoi(row[0]), priv, is_favor);
223	}
224	mysql_free_result(rs);
225
226	// Section ban
227	snprintf(sql, sizeof(sql),
228	"SELECT SID FROM ban_user_list WHERE UID = %d AND enable "
229	"AND (NOW() BETWEEN ban_dt AND unban_dt)",
230	uid);
231	if (mysql_query(db, sql) != 0)
232	{
233	log_error("Query ban_user_list error: %s", mysql_error(db));
234	return -1;
235	}
236	if ((rs = mysql_store_result(db)) == NULL)
237	{
238	log_error("Get ban_user_list data failed");
239	return -1;
240	}
241	while ((row = mysql_fetch_row(rs)))
242	{
243	priv = getpriv(p_priv, atoi(row[0]), &is_favor) & (~S_POST);
244	setpriv(p_priv, atoi(row[0]), priv, is_favor);
245	}
246	mysql_free_result(rs);
247
248	// User favor section
249	snprintf(sql, sizeof(sql),
250	"SELECT SID FROM section_favorite WHERE UID = %d",
251	uid);
252	if (mysql_query(db, sql) != 0)
253	{
254	log_error("Query section_favorite error: %s", mysql_error(db));
255	return -1;
256	}
257	if ((rs = mysql_store_result(db)) == NULL)
258	{
259	log_error("Get section_favorite data failed");
260	return -1;
261	}
262	while ((row = mysql_fetch_row(rs)))
263	{
264	priv = getpriv(p_priv, atoi(row[0]), &is_favor);
265	if (!is_favor)
266	{
267	setpriv(p_priv, atoi(row[0]), priv, 1);
268	priv = getpriv(p_priv, atoi(row[0]), &is_favor);
269	}
270	}
271	mysql_free_result(rs);
272
273	return 0;
274	}
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