lbbs/src/login.c

/***************************************************************************
                                                  login.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 "bbs.h"
#include "common.h"
#include "database.h"
#include "io.h"
#include "ip_mask.h"
#include "log.h"
#include "login.h"
#include "screen.h"
#include "user_priv.h"
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <regex.h>
#include <unistd.h>
#include <mysql/mysql.h>
#include <sys/param.h>

int bbs_login(void)
{
        char username[BBS_username_max_len + 1];
        char password[BBS_password_max_len + 1];
        int i = 0;
        int ok = 0;

        for (; !SYS_server_exit && !ok && i < BBS_login_retry_times; i++)
        {
                prints("\033[1;33m请输入帐号\033[m(试用请输入`\033[1;36mguest\033[m', "
                           "注册请输入`\033[1;31mnew\033[m'): ");
                iflush();

                if (str_input(username, sizeof(username), DOECHO) < 0)
                {
                        continue;
                }

                if (strcmp(username, "guest") == 0)
                {
                        load_guest_info();

                        return 0;
                }

                if (strcmp(username, "new") == 0)
                {
                        display_file(DATA_REGISTER, 1);

                        return -1;
                }

                if (username[0] != '\0')
                {
                        prints("\033[1;37m请输入密码\033[m: ");
                        iflush();

                        if (str_input(password, sizeof(password), NOECHO) < 0)
                        {
                                continue;
                        }

                        ok = (check_user(username, password) == 0);
                        iflush();
                }
        }

        if (!ok)
        {
                display_file(DATA_LOGIN_ERROR, 1);
                return -1;
        }

        log_common("User \"%s\"(%ld) login from %s:%d\n",
                           BBS_username, BBS_priv.uid, hostaddr_client, port_client);

        return 0;
}

int check_user(const char *username, const char *password)
{
        MYSQL *db = NULL;
        MYSQL_RES *rs = NULL;
        MYSQL_ROW row;
        char sql[SQL_BUFFER_LEN];
        int ret = 0;
        int BBS_uid = 0;
        char client_addr[IP_ADDR_LEN];
        int i;
        int ok = 1;
        char user_tz_env[BBS_user_tz_max_len + 2];

        db = db_open();
        if (db == NULL)
        {
                ret = -1;
                goto cleanup;
        }

        // Verify format
        for (i = 0; ok && username[i] != '\0'; i++)
        {
                if (!(isalpha(username[i]) || (i > 0 && isdigit(username[i]))))
                {
                        ok = 0;
                }
        }
        if (ok && (i < 3 || i > 12))
        {
                ok = 0;
        }
        for (i = 0; ok && password[i] != '\0'; i++)
        {
                if (!isalnum(password[i]))
                {
                        ok = 0;
                }
        }
        if (ok && (i < 5 || i > 12))
        {
                ok = 0;
        }

        if (!ok)
        {
                prints("\033[1;31m用户名或密码格式错误...\033[m\r\n");
                ret = 1;
                goto cleanup;
        }

        // Begin transaction
        if (mysql_query(db, "SET autocommit=0") != 0)
        {
                log_error("SET autocommit=0 error: %s\n", mysql_error(db));
                ret = -1;
                goto cleanup;
        }

        if (mysql_query(db, "BEGIN") != 0)
        {
                log_error("Begin transaction error: %s\n", mysql_error(db));
                ret = -1;
                goto cleanup;
        }

        // Failed login attempts from the same source (subnet /24) during certain time period
        strncpy(client_addr, hostaddr_client, sizeof(client_addr) - 1);
        client_addr[sizeof(client_addr) - 1] = '\0';

        snprintf(sql, sizeof(sql),
                         "SELECT COUNT(*) AS err_count FROM user_err_login_log "
                         "WHERE login_dt >= SUBDATE(NOW(), INTERVAL %d MINUTE) "
                         "AND login_ip LIKE '%s'",
                         BBS_login_failures_count_interval,
                         ip_mask(client_addr, 1, '%'));
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query user_list error: %s\n", mysql_error(db));
                ret = -1;
                goto cleanup;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get user_list data failed\n");
                ret = -1;
                goto cleanup;
        }
        if ((row = mysql_fetch_row(rs)))
        {
                if (atoi(row[0]) >= BBS_allowed_login_failures_within_interval)
                {
                        prints("\033[1;31m来源存在多次失败登陆尝试，请稍后再试，或使用Web方式访问\033[m\r\n");
                        ret = 1;
                        goto cleanup;
                }
        }
        mysql_free_result(rs);
        rs = NULL;

        // Failed login attempts against the current username since last successful login
        snprintf(sql, sizeof(sql),
                         "SELECT COUNT(*) AS err_count FROM user_err_login_log "
                         "LEFT JOIN user_list ON user_err_login_log.username = user_list.username "
                         "LEFT JOIN user_pubinfo ON user_list.UID = user_pubinfo.UID "
                         "WHERE user_err_login_log.username = '%s' "
                         "AND (user_err_login_log.login_dt >= user_pubinfo.last_login_dt "
                         "OR user_pubinfo.last_login_dt IS NULL)",
                         username);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query user_list error: %s\n", mysql_error(db));
                ret = -1;
                goto cleanup;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get user_list data failed\n");
                ret = -1;
                goto cleanup;
        }
        if ((row = mysql_fetch_row(rs)))
        {
                if (atoi(row[0]) >= BBS_allowed_login_failures_per_account)
                {
                        prints("\033[1;31m账户存在多次失败登陆尝试，请使用Web方式登录解锁\033[m\r\n");
                        ret = 1;
                        goto cleanup;
                }
        }
        mysql_free_result(rs);
        rs = NULL;

        snprintf(sql, sizeof(sql),
                         "SELECT UID, username, p_login FROM user_list "
                         "WHERE username = '%s' AND password = SHA2('%s', 256) AND enable",
                         username, password);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query user_list error: %s\n", mysql_error(db));
                ret = -1;
                goto cleanup;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get user_list data failed\n");
                ret = -1;
                goto cleanup;
        }
        if ((row = mysql_fetch_row(rs)))
        {
                BBS_uid = atoi(row[0]);
                strncpy(BBS_username, row[1], sizeof(BBS_username) - 1);
                BBS_username[sizeof(BBS_username) - 1] = '\0';
                int p_login = atoi(row[2]);

                mysql_free_result(rs);
                rs = NULL;

                // Add user login log
                snprintf(sql, sizeof(sql),
                                 "INSERT INTO user_login_log(UID, login_dt, login_ip) "
                                 "VALUES(%d, NOW(), '%s')",
                                 BBS_uid, hostaddr_client);
                if (mysql_query(db, sql) != 0)
                {
                        log_error("Insert into user_login_log error: %s\n", mysql_error(db));
                        ret = -1;
                        goto cleanup;
                }

                // Commit transaction
                if (mysql_query(db, "COMMIT") != 0)
                {
                        log_error("Commit transaction error: %s\n", mysql_error(db));
                        ret = -1;
                        goto cleanup;
                }

                if (p_login == 0)
                {
                        prints("\033[1;31m您目前无权登陆...\033[m\r\n");
                        ret = 1;
                        goto cleanup;
                }
        }
        else
        {
                mysql_free_result(rs);
                rs = NULL;

                snprintf(sql, sizeof(sql),
                                 "INSERT INTO user_err_login_log(username, password, login_dt, login_ip) "
                                 "VALUES('%s', '%s', NOW(), '%s')",
                                 username, password, hostaddr_client);
                if (mysql_query(db, sql) != 0)
                {
                        log_error("Insert into user_err_login_log error: %s\n", mysql_error(db));
                        ret = -1;
                        goto cleanup;
                }

                // Commit transaction
                if (mysql_query(db, "COMMIT") != 0)
                {
                        log_error("Commit transaction error: %s\n", mysql_error(db));
                        ret = -1;
                        goto cleanup;
                }

                prints("\033[1;31m错误的用户名或密码...\033[m\r\n");
                ret = 1;
                goto cleanup;
        }

        // Set AUTOCOMMIT = 1
        if (mysql_query(db, "SET autocommit=1") != 0)
        {
                log_error("SET autocommit=1 error: %s\n", mysql_error(db));
                ret = -1;
                goto cleanup;
        }

        ret = load_user_info(db, BBS_uid);

        switch (ret)
        {
        case 0: // Login successfully
                break;
        case -1: // Load data error
                prints("\033[1;31m读取用户数据错误...\033[m\r\n");
                ret = -1;
                goto cleanup;
        case -2: // Unused
                prints("\033[1;31m请通过Web登录更新用户许可协议...\033[m\r\n");
                ret = 1;
                goto cleanup;
        case -3: // Dead
                prints("\033[1;31m很遗憾，您已经永远离开了我们的世界！\033[m\r\n");
                ret = 1;
                goto cleanup;
        default:
                ret = -2;
                goto cleanup;
        }

        snprintf(sql, sizeof(sql),
                         "UPDATE user_pubinfo SET visit_count = visit_count + 1, "
                         "last_login_dt = NOW() WHERE UID = %d",
                         BBS_uid);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Update user_pubinfo error: %s\n", mysql_error(db));
                ret = -1;
                goto cleanup;
        }

        if (user_online_add(db) != 0)
        {
                ret = -1;
                goto cleanup;
        }

        BBS_last_access_tm = BBS_login_tm = time(NULL);

        // Set user tz to process env
        if (BBS_user_tz[0] != '\0')
        {
                user_tz_env[0] = ':';
                strncpy(user_tz_env + 1, BBS_user_tz, sizeof(user_tz_env) - 2);
                user_tz_env[sizeof(user_tz_env) - 1] = '\0';

                if (setenv("TZ", user_tz_env, 1) == -1)
                {
                        log_error("setenv(TZ = %s) error %d\n", user_tz_env, errno);
                        return -3;
                }

                tzset();
        }

cleanup:
        mysql_free_result(rs);
        mysql_close(db);

        return ret;
}

int load_user_info(MYSQL *db, int BBS_uid)
{
        MYSQL_RES *rs = NULL;
        MYSQL_ROW row;
        char sql[SQL_BUFFER_LEN];
        int life;
        time_t last_login_dt;
        int ret = 0;

        snprintf(sql, sizeof(sql),
                         "SELECT life, UNIX_TIMESTAMP(last_login_dt), user_timezone, exp, nickname "
                         "FROM user_pubinfo WHERE UID = %d",
                         BBS_uid);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Query user_pubinfo error: %s\n", mysql_error(db));
                ret = -1;
                goto cleanup;
        }
        if ((rs = mysql_store_result(db)) == NULL)
        {
                log_error("Get user_pubinfo data failed\n");
                ret = -1;
                goto cleanup;
        }
        if ((row = mysql_fetch_row(rs)))
        {
                life = atoi(row[0]);
                last_login_dt = (time_t)atol(row[1]);

                strncpy(BBS_user_tz, row[2], sizeof(BBS_user_tz) - 1);
                BBS_user_tz[sizeof(BBS_user_tz) - 1] = '\0';

                BBS_user_exp = atoi(row[3]);

                strncpy(BBS_nickname, row[4], sizeof(BBS_nickname));
                BBS_nickname[sizeof(BBS_nickname) - 1] = '\0';
        }
        else
        {
                ret = -1; // Data not found
                goto cleanup;
        }
        mysql_free_result(rs);
        rs = NULL;

        if (life != 333 && life != 365 && life != 666 && life != 999 && // Not immortal
                time(NULL) - last_login_dt > 60 * 60 * 24 * life)
        {
                ret = -3; // Dead
                goto cleanup;
        }

        if (load_priv(db, &BBS_priv, BBS_uid) != 0)
        {
                ret = -1;
                goto cleanup;
        }

cleanup:
        mysql_free_result(rs);

        return ret;
}

int load_guest_info(void)
{
        MYSQL *db = NULL;
        int ret = 0;

        db = db_open();
        if (db == NULL)
        {
                ret = -1;
                goto cleanup;
        }

        strncpy(BBS_username, "guest", sizeof(BBS_username) - 1);
        BBS_username[sizeof(BBS_username) - 1] = '\0';

        BBS_user_exp = 0;

        strncpy(BBS_nickname, "Guest", sizeof(BBS_nickname));
        BBS_nickname[sizeof(BBS_nickname) - 1] = '\0';

        if (load_priv(db, &BBS_priv, 0) != 0)
        {
                ret = -1;
                goto cleanup;
        }

        if (user_online_add(db) != 0)
        {
                ret = -1;
                goto cleanup;
        }

        BBS_last_access_tm = BBS_login_tm = time(NULL);

cleanup:
        mysql_close(db);

        return ret;
}

int user_online_add(MYSQL *db)
{
        char sql[SQL_BUFFER_LEN];

        snprintf(sql, sizeof(sql),
                         "INSERT INTO visit_log(dt, IP) VALUES(NOW(), '%s')",
                         hostaddr_client);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Add visit log error: %s\n", mysql_error(db));
                return -1;
        }

        if (user_online_del(db) != 0)
        {
                return -2;
        }

        snprintf(sql, sizeof(sql),
                         "INSERT INTO user_online(SID, UID, ip, current_action, login_tm, last_tm) "
                         "VALUES('Telnet_Process_%d', %d, '%s', 'LOGIN', NOW(), NOW())",
                         getpid(), BBS_priv.uid, hostaddr_client);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Add user_online error: %s\n", mysql_error(db));
                return -3;
        }

        return 0;
}

int user_online_del(MYSQL *db)
{
        char sql[SQL_BUFFER_LEN];

        snprintf(sql, sizeof(sql),
                         "DELETE FROM user_online WHERE SID = 'Telnet_Process_%d'",
                         getpid());
        if (mysql_query(db, sql) != 0)
        {
                log_error("Delete user_online error: %s\n", mysql_error(db));
                return -1;
        }

        return 0;
}

int user_online_exp(MYSQL *db)
{
        char sql[SQL_BUFFER_LEN];

        // +1 exp for every 5 minutes online since last logout
        // but at most 24 hours worth of exp can be gained in Telnet session
        snprintf(sql, sizeof(sql),
                         "UPDATE user_pubinfo SET exp = exp + FLOOR(LEAST(TIMESTAMPDIFF("
                         "SECOND, GREATEST(last_login_dt, IF(last_logout_dt IS NULL, last_login_dt, last_logout_dt)), NOW()"
                         ") / 60 / 5, 12 * 24)), last_logout_dt = NOW() "
                         "WHERE UID = %d",
                         BBS_priv.uid);
        if (mysql_query(db, sql) != 0)
        {
                log_error("Update user_pubinfo error: %s\n", mysql_error(db));
                return -1;
        }

        return 0;
}

int user_online_update(const char *action)
{
        MYSQL *db = NULL;
        char sql[SQL_BUFFER_LEN];

        if ((action == NULL || strcmp(BBS_current_action, action) == 0) &&
                time(NULL) - BBS_current_action_tm < BBS_current_action_refresh_interval) // No change
        {
                return 0;
        }

        if (action != NULL)
        {
                strncpy(BBS_current_action, action, sizeof(BBS_current_action) - 1);
                BBS_current_action[sizeof(BBS_current_action) - 1] = '\0';
        }

        BBS_current_action_tm = time(NULL);

        db = db_open();
        if (db == NULL)
        {
                log_error("db_open() error: %s\n", mysql_error(db));
                return -1;
        }

        snprintf(sql, sizeof(sql),
                         "UPDATE user_online SET current_action = '%s', last_tm=NOW() "
                         "WHERE SID = 'Telnet_Process_%d'",
                         BBS_current_action, getpid());
        if (mysql_query(db, sql) != 0)
        {
                log_error("Update user_online error: %s\n", mysql_error(db));
                return -2;
        }

        mysql_close(db);

        return 1;
}
1	sysadm	1.1	/***************************************************************************
2	sysadm	1.11	login.c - description
3			-------------------
4	sysadm	1.20	Copyright : (C) 2004-2025 by Leaflet
5			Email : leaflet@leafok.com
6	sysadm	1.1	***************************************************************************/
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	sysadm	1.20	* the Free Software Foundation; either version 3 of the License, or *
13	sysadm	1.1	* (at your option) any later version. *
14			* *
15			***************************************************************************/
16
17			#include "bbs.h"
18			#include "common.h"
19	sysadm	1.48	#include "database.h"
20			#include "io.h"
21	sysadm	1.50	#include "ip_mask.h"
22	sysadm	1.14	#include "log.h"
23	sysadm	1.48	#include "login.h"
24	sysadm	1.14	#include "screen.h"
25	sysadm	1.48	#include "user_priv.h"
26			#include <ctype.h>
27	sysadm	1.34	#include <errno.h>
28	sysadm	1.48	#include <stdlib.h>
29	sysadm	1.14	#include <string.h>
30	sysadm	1.3	#include <regex.h>
31	sysadm	1.14	#include <unistd.h>
32	sysadm	1.36	#include <mysql/mysql.h>
33	sysadm	1.56	#include <sys/param.h>
34	sysadm	1.1
35	sysadm	1.41	int bbs_login(void)
36	sysadm	1.1	{
37	sysadm	1.15	char username[BBS_username_max_len + 1];
38			char password[BBS_password_max_len + 1];
39	sysadm	1.37	int i = 0;
40	sysadm	1.16	int ok = 0;
41	sysadm	1.2
42	sysadm	1.37	for (; !SYS_server_exit && !ok && i < BBS_login_retry_times; i++)
43	sysadm	1.11	{
44	sysadm	1.49	prints("\033[1;33m请输入帐号\033[m(试用请输入`\033[1;36mguest\033[m', "
45			"注册请输入`\033[1;31mnew\033[m'): ");
46	sysadm	1.11	iflush();
47
48	sysadm	1.24	if (str_input(username, sizeof(username), DOECHO) < 0)
49			{
50			continue;
51			}
52	sysadm	1.11
53			if (strcmp(username, "guest") == 0)
54			{
55	sysadm	1.41	load_guest_info();
56	sysadm	1.14
57	sysadm	1.11	return 0;
58			}
59
60			if (strcmp(username, "new") == 0)
61			{
62	sysadm	1.42	display_file(DATA_REGISTER, 1);
63	sysadm	1.30
64	sysadm	1.51	return -1;
65	sysadm	1.11	}
66
67	sysadm	1.17	if (username[0] != '\0')
68	sysadm	1.11	{
69	sysadm	1.49	prints("\033[1;37m请输入密码\033[m: ");
70	sysadm	1.11	iflush();
71
72	sysadm	1.24	if (str_input(password, sizeof(password), NOECHO) < 0)
73			{
74			continue;
75			}
76	sysadm	1.11
77	sysadm	1.41	ok = (check_user(username, password) == 0);
78	sysadm	1.31	iflush();
79	sysadm	1.11	}
80	sysadm	1.24	}
81
82			if (!ok)
83			{
84	sysadm	1.42	display_file(DATA_LOGIN_ERROR, 1);
85	sysadm	1.24	return -1;
86	sysadm	1.11	}
87	sysadm	1.2
88	sysadm	1.38	log_common("User \"%s\"(%ld) login from %s:%d\n",
89	sysadm	1.39	BBS_username, BBS_priv.uid, hostaddr_client, port_client);
90	sysadm	1.28
91	sysadm	1.11	return 0;
92			}
93	sysadm	1.2
94	sysadm	1.41	int check_user(const char username, const char password)
95	sysadm	1.11	{
96	sysadm	1.44	MYSQL *db = NULL;
97			MYSQL_RES *rs = NULL;
98	sysadm	1.11	MYSQL_ROW row;
99	sysadm	1.15	char sql[SQL_BUFFER_LEN];
100	sysadm	1.44	int ret = 0;
101	sysadm	1.40	int BBS_uid = 0;
102	sysadm	1.22	char client_addr[IP_ADDR_LEN];
103	sysadm	1.27	int i;
104			int ok = 1;
105	sysadm	1.34	char user_tz_env[BBS_user_tz_max_len + 2];
106	sysadm	1.11
107	sysadm	1.41	db = db_open();
108			if (db == NULL)
109			{
110	sysadm	1.44	ret = -1;
111			goto cleanup;
112	sysadm	1.41	}
113
114	sysadm	1.11	// Verify format
115	sysadm	1.27	for (i = 0; ok && username[i] != '\0'; i++)
116			{
117			if (!(isalpha(username[i]) \|\| (i > 0 && isdigit(username[i]))))
118			{
119			ok = 0;
120			}
121			}
122			if (ok && (i < 3 \|\| i > 12))
123			{
124			ok = 0;
125			}
126			for (i = 0; ok && password[i] != '\0'; i++)
127			{
128			if (!isalnum(password[i]))
129			{
130			ok = 0;
131			}
132			}
133			if (ok && (i < 5 \|\| i > 12))
134			{
135			ok = 0;
136			}
137
138			if (!ok)
139	sysadm	1.5	{
140	sysadm	1.49	prints("\033[1;31m用户名或密码格式错误...\033[m\r\n");
141	sysadm	1.44	ret = 1;
142			goto cleanup;
143	sysadm	1.5	}
144
145	sysadm	1.13	// Begin transaction
146			if (mysql_query(db, "SET autocommit=0") != 0)
147			{
148	sysadm	1.33	log_error("SET autocommit=0 error: %s\n", mysql_error(db));
149	sysadm	1.44	ret = -1;
150			goto cleanup;
151	sysadm	1.13	}
152
153			if (mysql_query(db, "BEGIN") != 0)
154			{
155	sysadm	1.33	log_error("Begin transaction error: %s\n", mysql_error(db));
156	sysadm	1.44	ret = -1;
157			goto cleanup;
158	sysadm	1.13	}
159
160	sysadm	1.22	// Failed login attempts from the same source (subnet /24) during certain time period
161			strncpy(client_addr, hostaddr_client, sizeof(client_addr) - 1);
162			client_addr[sizeof(client_addr) - 1] = '\0';
163
164			snprintf(sql, sizeof(sql),
165			"SELECT COUNT(*) AS err_count FROM user_err_login_log "
166	sysadm	1.44	"WHERE login_dt >= SUBDATE(NOW(), INTERVAL %d MINUTE) "
167	sysadm	1.22	"AND login_ip LIKE '%s'",
168	sysadm	1.44	BBS_login_failures_count_interval,
169	sysadm	1.22	ip_mask(client_addr, 1, '%'));
170			if (mysql_query(db, sql) != 0)
171			{
172	sysadm	1.33	log_error("Query user_list error: %s\n", mysql_error(db));
173	sysadm	1.44	ret = -1;
174			goto cleanup;
175	sysadm	1.22	}
176			if ((rs = mysql_store_result(db)) == NULL)
177			{
178			log_error("Get user_list data failed\n");
179	sysadm	1.44	ret = -1;
180			goto cleanup;
181	sysadm	1.22	}
182			if ((row = mysql_fetch_row(rs)))
183			{
184	sysadm	1.52	if (atoi(row[0]) >= BBS_allowed_login_failures_within_interval)
185	sysadm	1.22	{
186	sysadm	1.52	prints("\033[1;31m来源存在多次失败登陆尝试，请稍后再试，或使用Web方式访问\033[m\r\n");
187	sysadm	1.44	ret = 1;
188			goto cleanup;
189	sysadm	1.22	}
190			}
191			mysql_free_result(rs);
192	sysadm	1.44	rs = NULL;
193	sysadm	1.22
194	sysadm	1.52	// Failed login attempts against the current username since last successful login
195	sysadm	1.22	snprintf(sql, sizeof(sql),
196			"SELECT COUNT(*) AS err_count FROM user_err_login_log "
197	sysadm	1.52	"LEFT JOIN user_list ON user_err_login_log.username = user_list.username "
198			"LEFT JOIN user_pubinfo ON user_list.UID = user_pubinfo.UID "
199			"WHERE user_err_login_log.username = '%s' "
200			"AND (user_err_login_log.login_dt >= user_pubinfo.last_login_dt "
201			"OR user_pubinfo.last_login_dt IS NULL)",
202	sysadm	1.22	username);
203			if (mysql_query(db, sql) != 0)
204			{
205	sysadm	1.33	log_error("Query user_list error: %s\n", mysql_error(db));
206	sysadm	1.44	ret = -1;
207			goto cleanup;
208	sysadm	1.22	}
209			if ((rs = mysql_store_result(db)) == NULL)
210			{
211			log_error("Get user_list data failed\n");
212	sysadm	1.44	ret = -1;
213			goto cleanup;
214	sysadm	1.22	}
215			if ((row = mysql_fetch_row(rs)))
216			{
217	sysadm	1.53	if (atoi(row[0]) >= BBS_allowed_login_failures_per_account)
218	sysadm	1.22	{
219	sysadm	1.52	prints("\033[1;31m账户存在多次失败登陆尝试，请使用Web方式登录解锁\033[m\r\n");
220	sysadm	1.44	ret = 1;
221			goto cleanup;
222	sysadm	1.22	}
223			}
224			mysql_free_result(rs);
225	sysadm	1.44	rs = NULL;
226	sysadm	1.22
227	sysadm	1.18	snprintf(sql, sizeof(sql),
228	sysadm	1.22	"SELECT UID, username, p_login FROM user_list "
229			"WHERE username = '%s' AND password = SHA2('%s', 256) AND enable",
230			username, password);
231	sysadm	1.11	if (mysql_query(db, sql) != 0)
232			{
233	sysadm	1.33	log_error("Query user_list error: %s\n", mysql_error(db));
234	sysadm	1.44	ret = -1;
235			goto cleanup;
236	sysadm	1.11	}
237			if ((rs = mysql_store_result(db)) == NULL)
238	sysadm	1.2	{
239	sysadm	1.11	log_error("Get user_list data failed\n");
240	sysadm	1.44	ret = -1;
241			goto cleanup;
242	sysadm	1.11	}
243	sysadm	1.15	if ((row = mysql_fetch_row(rs)))
244	sysadm	1.11	{
245	sysadm	1.40	BBS_uid = atoi(row[0]);
246	sysadm	1.17	strncpy(BBS_username, row[1], sizeof(BBS_username) - 1);
247			BBS_username[sizeof(BBS_username) - 1] = '\0';
248	sysadm	1.13	int p_login = atoi(row[2]);
249
250			mysql_free_result(rs);
251	sysadm	1.44	rs = NULL;
252	sysadm	1.13
253			// Add user login log
254	sysadm	1.18	snprintf(sql, sizeof(sql),
255	sysadm	1.22	"INSERT INTO user_login_log(UID, login_dt, login_ip) "
256	sysadm	1.40	"VALUES(%d, NOW(), '%s')",
257	sysadm	1.22	BBS_uid, hostaddr_client);
258	sysadm	1.13	if (mysql_query(db, sql) != 0)
259			{
260	sysadm	1.33	log_error("Insert into user_login_log error: %s\n", mysql_error(db));
261	sysadm	1.44	ret = -1;
262			goto cleanup;
263	sysadm	1.13	}
264
265			// Commit transaction
266			if (mysql_query(db, "COMMIT") != 0)
267			{
268	sysadm	1.33	log_error("Commit transaction error: %s\n", mysql_error(db));
269	sysadm	1.44	ret = -1;
270			goto cleanup;
271	sysadm	1.13	}
272
273			if (p_login == 0)
274	sysadm	1.11	{
275	sysadm	1.49	prints("\033[1;31m您目前无权登陆...\033[m\r\n");
276	sysadm	1.44	ret = 1;
277			goto cleanup;
278	sysadm	1.11	}
279			}
280			else
281			{
282			mysql_free_result(rs);
283	sysadm	1.44	rs = NULL;
284	sysadm	1.2
285	sysadm	1.18	snprintf(sql, sizeof(sql),
286	sysadm	1.22	"INSERT INTO user_err_login_log(username, password, login_dt, login_ip) "
287			"VALUES('%s', '%s', NOW(), '%s')",
288			username, password, hostaddr_client);
289	sysadm	1.11	if (mysql_query(db, sql) != 0)
290			{
291	sysadm	1.33	log_error("Insert into user_err_login_log error: %s\n", mysql_error(db));
292	sysadm	1.44	ret = -1;
293			goto cleanup;
294	sysadm	1.11	}
295
296	sysadm	1.13	// Commit transaction
297			if (mysql_query(db, "COMMIT") != 0)
298			{
299	sysadm	1.33	log_error("Commit transaction error: %s\n", mysql_error(db));
300	sysadm	1.44	ret = -1;
301			goto cleanup;
302	sysadm	1.13	}
303
304	sysadm	1.49	prints("\033[1;31m错误的用户名或密码...\033[m\r\n");
305	sysadm	1.44	ret = 1;
306			goto cleanup;
307	sysadm	1.11	}
308	sysadm	1.13
309			// Set AUTOCOMMIT = 1
310			if (mysql_query(db, "SET autocommit=1") != 0)
311			{
312	sysadm	1.33	log_error("SET autocommit=1 error: %s\n", mysql_error(db));
313	sysadm	1.44	ret = -1;
314			goto cleanup;
315	sysadm	1.13	}
316	sysadm	1.2
317	sysadm	1.11	ret = load_user_info(db, BBS_uid);
318
319			switch (ret)
320	sysadm	1.2	{
321	sysadm	1.11	case 0: // Login successfully
322			break;
323			case -1: // Load data error
324	sysadm	1.49	prints("\033[1;31m读取用户数据错误...\033[m\r\n");
325	sysadm	1.44	ret = -1;
326			goto cleanup;
327	sysadm	1.11	case -2: // Unused
328	sysadm	1.49	prints("\033[1;31m请通过Web登录更新用户许可协议...\033[m\r\n");
329	sysadm	1.44	ret = 1;
330			goto cleanup;
331	sysadm	1.11	case -3: // Dead
332	sysadm	1.49	prints("\033[1;31m很遗憾，您已经永远离开了我们的世界！\033[m\r\n");
333	sysadm	1.44	ret = 1;
334			goto cleanup;
335	sysadm	1.11	default:
336	sysadm	1.44	ret = -2;
337			goto cleanup;
338	sysadm	1.2	}
339
340	sysadm	1.18	snprintf(sql, sizeof(sql),
341	sysadm	1.22	"UPDATE user_pubinfo SET visit_count = visit_count + 1, "
342	sysadm	1.40	"last_login_dt = NOW() WHERE UID = %d",
343	sysadm	1.22	BBS_uid);
344	sysadm	1.13	if (mysql_query(db, sql) != 0)
345			{
346	sysadm	1.33	log_error("Update user_pubinfo error: %s\n", mysql_error(db));
347	sysadm	1.44	ret = -1;
348			goto cleanup;
349	sysadm	1.13	}
350
351	sysadm	1.15	if (user_online_add(db) != 0)
352			{
353	sysadm	1.44	ret = -1;
354			goto cleanup;
355	sysadm	1.15	}
356
357	sysadm	1.45	BBS_last_access_tm = BBS_login_tm = time(NULL);
358	sysadm	1.13
359	sysadm	1.34	// Set user tz to process env
360			if (BBS_user_tz[0] != '\0')
361			{
362			user_tz_env[0] = ':';
363			strncpy(user_tz_env + 1, BBS_user_tz, sizeof(user_tz_env) - 2);
364			user_tz_env[sizeof(user_tz_env) - 1] = '\0';
365
366			if (setenv("TZ", user_tz_env, 1) == -1)
367			{
368			log_error("setenv(TZ = %s) error %d\n", user_tz_env, errno);
369			return -3;
370			}
371
372			tzset();
373			}
374
375	sysadm	1.44	cleanup:
376			mysql_free_result(rs);
377	sysadm	1.41	mysql_close(db);
378
379	sysadm	1.44	return ret;
380	sysadm	1.1	}
381	sysadm	1.2
382	sysadm	1.40	int load_user_info(MYSQL *db, int BBS_uid)
383	sysadm	1.3	{
384	sysadm	1.44	MYSQL_RES *rs = NULL;
385	sysadm	1.11	MYSQL_ROW row;
386	sysadm	1.15	char sql[SQL_BUFFER_LEN];
387	sysadm	1.11	int life;
388			time_t last_login_dt;
389	sysadm	1.44	int ret = 0;
390	sysadm	1.11
391	sysadm	1.18	snprintf(sql, sizeof(sql),
392	sysadm	1.43	"SELECT life, UNIX_TIMESTAMP(last_login_dt), user_timezone, exp, nickname "
393	sysadm	1.40	"FROM user_pubinfo WHERE UID = %d",
394	sysadm	1.22	BBS_uid);
395	sysadm	1.11	if (mysql_query(db, sql) != 0)
396			{
397	sysadm	1.33	log_error("Query user_pubinfo error: %s\n", mysql_error(db));
398	sysadm	1.44	ret = -1;
399			goto cleanup;
400	sysadm	1.11	}
401			if ((rs = mysql_store_result(db)) == NULL)
402			{
403			log_error("Get user_pubinfo data failed\n");
404	sysadm	1.44	ret = -1;
405			goto cleanup;
406	sysadm	1.11	}
407	sysadm	1.15	if ((row = mysql_fetch_row(rs)))
408	sysadm	1.11	{
409			life = atoi(row[0]);
410			last_login_dt = (time_t)atol(row[1]);
411	sysadm	1.34
412			strncpy(BBS_user_tz, row[2], sizeof(BBS_user_tz) - 1);
413			BBS_user_tz[sizeof(BBS_user_tz) - 1] = '\0';
414	sysadm	1.43
415			BBS_user_exp = atoi(row[3]);
416
417			strncpy(BBS_nickname, row[4], sizeof(BBS_nickname));
418			BBS_nickname[sizeof(BBS_nickname) - 1] = '\0';
419	sysadm	1.11	}
420			else
421			{
422	sysadm	1.44	ret = -1; // Data not found
423			goto cleanup;
424	sysadm	1.11	}
425			mysql_free_result(rs);
426	sysadm	1.44	rs = NULL;
427	sysadm	1.3
428	sysadm	1.13	if (life != 333 && life != 365 && life != 666 && life != 999 && // Not immortal
429	sysadm	1.45	time(NULL) - last_login_dt > 60 * 60 * 24 * life)
430	sysadm	1.11	{
431	sysadm	1.44	ret = -3; // Dead
432			goto cleanup;
433	sysadm	1.11	}
434	sysadm	1.5
435	sysadm	1.15	if (load_priv(db, &BBS_priv, BBS_uid) != 0)
436			{
437	sysadm	1.44	ret = -1;
438			goto cleanup;
439	sysadm	1.15	}
440	sysadm	1.11
441	sysadm	1.44	cleanup:
442			mysql_free_result(rs);
443
444			return ret;
445	sysadm	1.2	}
446	sysadm	1.5
447	sysadm	1.41	int load_guest_info(void)
448	sysadm	1.5	{
449	sysadm	1.44	MYSQL *db = NULL;
450			int ret = 0;
451	sysadm	1.41
452			db = db_open();
453			if (db == NULL)
454			{
455	sysadm	1.44	ret = -1;
456			goto cleanup;
457	sysadm	1.41	}
458
459	sysadm	1.17	strncpy(BBS_username, "guest", sizeof(BBS_username) - 1);
460			BBS_username[sizeof(BBS_username) - 1] = '\0';
461	sysadm	1.5
462	sysadm	1.43	BBS_user_exp = 0;
463
464			strncpy(BBS_nickname, "Guest", sizeof(BBS_nickname));
465			BBS_nickname[sizeof(BBS_nickname) - 1] = '\0';
466
467	sysadm	1.15	if (load_priv(db, &BBS_priv, 0) != 0)
468			{
469	sysadm	1.44	ret = -1;
470			goto cleanup;
471	sysadm	1.15	}
472	sysadm	1.6
473	sysadm	1.15	if (user_online_add(db) != 0)
474			{
475	sysadm	1.44	ret = -1;
476			goto cleanup;
477	sysadm	1.15	}
478	sysadm	1.5
479	sysadm	1.45	BBS_last_access_tm = BBS_login_tm = time(NULL);
480	sysadm	1.5
481	sysadm	1.44	cleanup:
482	sysadm	1.41	mysql_close(db);
483	sysadm	1.44
484			return ret;
485	sysadm	1.5	}
486	sysadm	1.15
487			int user_online_add(MYSQL *db)
488			{
489			char sql[SQL_BUFFER_LEN];
490
491	sysadm	1.60	snprintf(sql, sizeof(sql),
492			"INSERT INTO visit_log(dt, IP) VALUES(NOW(), '%s')",
493			hostaddr_client);
494			if (mysql_query(db, sql) != 0)
495			{
496			log_error("Add visit log error: %s\n", mysql_error(db));
497			return -1;
498			}
499
500	sysadm	1.15	if (user_online_del(db) != 0)
501			{
502	sysadm	1.60	return -2;
503	sysadm	1.15	}
504
505	sysadm	1.18	snprintf(sql, sizeof(sql),
506	sysadm	1.61	"INSERT INTO user_online(SID, UID, ip, current_action, login_tm, last_tm) "
507			"VALUES('Telnet_Process_%d', %d, '%s', 'LOGIN', NOW(), NOW())",
508	sysadm	1.22	getpid(), BBS_priv.uid, hostaddr_client);
509	sysadm	1.15	if (mysql_query(db, sql) != 0)
510			{
511	sysadm	1.33	log_error("Add user_online error: %s\n", mysql_error(db));
512	sysadm	1.60	return -3;
513	sysadm	1.15	}
514
515			return 0;
516			}
517
518			int user_online_del(MYSQL *db)
519			{
520			char sql[SQL_BUFFER_LEN];
521
522	sysadm	1.57	snprintf(sql, sizeof(sql),
523			"DELETE FROM user_online WHERE SID = 'Telnet_Process_%d'",
524			getpid());
525			if (mysql_query(db, sql) != 0)
526			{
527			log_error("Delete user_online error: %s\n", mysql_error(db));
528			return -1;
529			}
530
531			return 0;
532			}
533
534			int user_online_exp(MYSQL *db)
535			{
536			char sql[SQL_BUFFER_LEN];
537
538	sysadm	1.56	// +1 exp for every 5 minutes online since last logout
539			// but at most 24 hours worth of exp can be gained in Telnet session
540			snprintf(sql, sizeof(sql),
541	sysadm	1.60	"UPDATE user_pubinfo SET exp = exp + FLOOR(LEAST(TIMESTAMPDIFF("
542			"SECOND, GREATEST(last_login_dt, IF(last_logout_dt IS NULL, last_login_dt, last_logout_dt)), NOW()"
543			") / 60 / 5, 12 * 24)), last_logout_dt = NOW() "
544			"WHERE UID = %d",
545			BBS_priv.uid);
546	sysadm	1.56	if (mysql_query(db, sql) != 0)
547			{
548			log_error("Update user_pubinfo error: %s\n", mysql_error(db));
549			return -1;
550			}
551	sysadm	1.15
552			return 0;
553			}
554	sysadm	1.47
555			int user_online_update(const char *action)
556			{
557			MYSQL *db = NULL;
558			char sql[SQL_BUFFER_LEN];
559
560	sysadm	1.55	if ((action == NULL \|\| strcmp(BBS_current_action, action) == 0) &&
561	sysadm	1.54	time(NULL) - BBS_current_action_tm < BBS_current_action_refresh_interval) // No change
562	sysadm	1.47	{
563			return 0;
564			}
565
566	sysadm	1.55	if (action != NULL)
567			{
568			strncpy(BBS_current_action, action, sizeof(BBS_current_action) - 1);
569			BBS_current_action[sizeof(BBS_current_action) - 1] = '\0';
570			}
571
572	sysadm	1.54	BBS_current_action_tm = time(NULL);
573	sysadm	1.47
574			db = db_open();
575			if (db == NULL)
576			{
577			log_error("db_open() error: %s\n", mysql_error(db));
578			return -1;
579			}
580
581			snprintf(sql, sizeof(sql),
582			"UPDATE user_online SET current_action = '%s', last_tm=NOW() "
583			"WHERE SID = 'Telnet_Process_%d'",
584			BBS_current_action, getpid());
585			if (mysql_query(db, sql) != 0)
586			{
587			log_error("Update user_online error: %s\n", mysql_error(db));
588			return -2;
589			}
590
591			mysql_close(db);
592
593			return 1;
594			}
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