lbbs/src/user_priv.c

/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
 * user_priv
 *   - basic operations of user privilege
 *
 * Copyright (C) 2004-2025 by Leaflet <leaflet@leafok.com>
 */

#include "bbs.h"
#include "common.h"
#include "database.h"
#include "log.h"
#include "user_priv.h"
#include <stdio.h>
#include <stdlib.h>
#include <mysql/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\n", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get user_list data failed\n");
                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\n", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get admin_config data failed\n");
                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\n", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get section_master data failed\n");
                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\n", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get section_config data failed\n");
                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\n", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get ban_user_list data failed\n");
                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\n", mysql_error(db));
                return -1;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get section_favorite data failed\n");
                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) 2004-2025 by Leaflet <leaflet@leafok.com>
7	*/
8
9	#include "bbs.h"
10	#include "common.h"
11	#include "database.h"
12	#include "log.h"
13	#include "user_priv.h"
14	#include <stdio.h>
15	#include <stdlib.h>
16	#include <mysql/mysql.h>
17
18	BBS_user_priv BBS_priv;
19
20	inline static int search_priv(BBS_user_priv p_priv, int sid, int p_offset)
21	{
22	int left = 0;
23	int right = p_priv->s_count - 1;
24	int mid = 0;
25
26	while (left < right)
27	{
28	mid = (left + right) / 2;
29
30	if (sid < p_priv->s_priv_list[mid].sid)
31	{
32	right = mid - 1;
33	}
34	else if (sid > p_priv->s_priv_list[mid].sid)
35	{
36	left = mid + 1;
37	}
38	else // if (sid == p_priv->s_priv_list[mid].sid)
39	{
40	left = mid;
41	break;
42	}
43	}
44
45	*p_offset = left;
46
47	return (sid == p_priv->s_priv_list[left].sid);
48	}
49
50	int setpriv(BBS_user_priv *p_priv, int sid, int priv, int is_favor)
51	{
52	int offset;
53	int i;
54
55	if (sid == 0)
56	{
57	p_priv->g_priv = priv;
58	return 0;
59	}
60
61	if (search_priv(p_priv, sid, &offset)) // found
62	{
63	p_priv->s_priv_list[offset].s_priv = priv;
64	p_priv->s_priv_list[offset].is_favor = is_favor;
65	return 0;
66	}
67
68	// not found
69	if (p_priv->s_count >= BBS_max_section)
70	{
71	return -1;
72	}
73
74	// move items at [left, p_priv->s_count - 1] to [left + 1, p_priv->s_count]
75	for (i = p_priv->s_count - 1; i >= offset; i--)
76	{
77	p_priv->s_priv_list[i + 1] = p_priv->s_priv_list[i];
78	}
79	p_priv->s_count++;
80
81	// insert new item at offset left
82	p_priv->s_priv_list[offset].sid = sid;
83	p_priv->s_priv_list[offset].s_priv = priv;
84	p_priv->s_priv_list[offset].is_favor = is_favor;
85
86	return 0;
87	}
88
89	int getpriv(BBS_user_priv p_priv, int sid, int p_is_favor)
90	{
91	int offset;
92
93	if (search_priv(p_priv, sid, &offset)) // found
94	{
95	*p_is_favor = p_priv->s_priv_list[offset].is_favor;
96	return p_priv->s_priv_list[offset].s_priv;
97	}
98
99	*p_is_favor = 0;
100	return (sid >= 0 ? p_priv->g_priv : S_NONE);
101	}
102
103	int load_priv(MYSQL db, BBS_user_priv p_priv, int uid)
104	{
105	MYSQL_RES *rs;
106	MYSQL_ROW row;
107	char sql[SQL_BUFFER_LEN];
108	int priv;
109	int is_favor;
110
111	p_priv->uid = uid;
112	p_priv->level = (uid == 0 ? P_GUEST : P_USER);
113	p_priv->g_priv = S_DEFAULT;
114	p_priv->s_count = 0;
115
116	if (db == NULL)
117	return 1;
118
119	// Permission
120	snprintf(sql, sizeof(sql),
121	"SELECT p_post, p_msg FROM user_list WHERE UID = %d AND verified",
122	uid);
123	if (mysql_query(db, sql) != 0)
124	{
125	log_error("Query user_list error: %s\n", mysql_error(db));
126	return -1;
127	}
128	if ((rs = mysql_store_result(db)) == NULL)
129	{
130	log_error("Get user_list data failed\n");
131	return -1;
132	}
133	if ((row = mysql_fetch_row(rs)))
134	{
135	p_priv->g_priv \|= (atoi(row[0]) ? S_POST : 0);
136	p_priv->g_priv \|= (atoi(row[1]) ? S_MSG : 0);
137	}
138	mysql_free_result(rs);
139
140	// Admin
141	snprintf(sql, sizeof(sql),
142	"SELECT major FROM admin_config WHERE UID = %d "
143	"AND enable AND (NOW() BETWEEN begin_dt AND end_dt)",
144	uid);
145	if (mysql_query(db, sql) != 0)
146	{
147	log_error("Query admin_config error: %s\n", mysql_error(db));
148	return -1;
149	}
150	if ((rs = mysql_store_result(db)) == NULL)
151	{
152	log_error("Get admin_config data failed\n");
153	return -1;
154	}
155	if ((row = mysql_fetch_row(rs)))
156	{
157	p_priv->level \|= (atoi(row[0]) ? P_ADMIN_M : P_ADMIN_S);
158	p_priv->g_priv \|= (atoi(row[0]) ? S_ALL : S_ADMIN);
159	}
160	mysql_free_result(rs);
161
162	// Section Master
163	snprintf(sql, sizeof(sql),
164	"SELECT section_master.SID, major FROM section_master "
165	"INNER JOIN section_config ON section_master.SID = section_config.SID "
166	"WHERE UID = %d AND section_master.enable AND section_config.enable "
167	"AND (NOW() BETWEEN begin_dt AND end_dt)",
168	uid);
169	if (mysql_query(db, sql) != 0)
170	{
171	log_error("Query section_master error: %s\n", mysql_error(db));
172	return -1;
173	}
174	if ((rs = mysql_store_result(db)) == NULL)
175	{
176	log_error("Get section_master data failed\n");
177	return -1;
178	}
179	while ((row = mysql_fetch_row(rs)))
180	{
181	p_priv->level \|= (atoi(row[1]) ? P_MAN_M : P_MAN_S);
182	priv = (getpriv(p_priv, atoi(row[0]), &is_favor) \| (atoi(row[1]) ? S_MAN_M : S_MAN_S));
183	setpriv(p_priv, atoi(row[0]), priv, is_favor);
184	}
185	mysql_free_result(rs);
186
187	// Section status
188	snprintf(sql, sizeof(sql),
189	"SELECT SID, exp_get, read_user_level, write_user_level FROM section_config "
190	"INNER JOIN section_class ON section_config.CID = section_class.CID "
191	"WHERE section_config.enable AND section_class.enable "
192	"ORDER BY SID");
193	if (mysql_query(db, sql) != 0)
194	{
195	log_error("Query section_config error: %s\n", mysql_error(db));
196	return -1;
197	}
198	if ((rs = mysql_store_result(db)) == NULL)
199	{
200	log_error("Get section_config data failed\n");
201	return -1;
202	}
203	while ((row = mysql_fetch_row(rs)))
204	{
205	int priv = getpriv(p_priv, atoi(row[0]), &is_favor);
206	if (p_priv->level < atoi(row[2]))
207	{
208	priv &= (~S_LIST);
209	}
210	if (p_priv->level < atoi(row[3]))
211	{
212	priv &= (~S_POST);
213	}
214	if (!atoi(row[1]))
215	{
216	priv &= (~S_GETEXP);
217	}
218	setpriv(p_priv, atoi(row[0]), priv, is_favor);
219	}
220	mysql_free_result(rs);
221
222	// Section ban
223	snprintf(sql, sizeof(sql),
224	"SELECT SID FROM ban_user_list WHERE UID = %d AND enable "
225	"AND (NOW() BETWEEN ban_dt AND unban_dt)",
226	uid);
227	if (mysql_query(db, sql) != 0)
228	{
229	log_error("Query ban_user_list error: %s\n", mysql_error(db));
230	return -1;
231	}
232	if ((rs = mysql_store_result(db)) == NULL)
233	{
234	log_error("Get ban_user_list data failed\n");
235	return -1;
236	}
237	while ((row = mysql_fetch_row(rs)))
238	{
239	priv = getpriv(p_priv, atoi(row[0]), &is_favor) & (~S_POST);
240	setpriv(p_priv, atoi(row[0]), priv, is_favor);
241	}
242	mysql_free_result(rs);
243
244	// User favor section
245	snprintf(sql, sizeof(sql),
246	"SELECT SID FROM section_favorite WHERE UID = %d",
247	uid);
248	if (mysql_query(db, sql) != 0)
249	{
250	log_error("Query section_favorite error: %s\n", mysql_error(db));
251	return -1;
252	}
253	if ((rs = mysql_store_result(db)) == NULL)
254	{
255	log_error("Get section_favorite data failed\n");
256	return -1;
257	}
258	while ((row = mysql_fetch_row(rs)))
259	{
260	priv = getpriv(p_priv, atoi(row[0]), &is_favor);
261	if (!is_favor)
262	{
263	setpriv(p_priv, atoi(row[0]), priv, 1);
264	priv = getpriv(p_priv, atoi(row[0]), &is_favor);
265	}
266	}
267	mysql_free_result(rs);
268
269	return 0;
270	}
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