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>

static const int BBS_username_min_len = 3; // common len = 5, special len = 3
static const int BBS_password_min_len = 5; // legacy len = 5, current len = 6

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]) || username[i] == '_'))))
                {
                        ok = 0;
                }
        }
        if (ok && (i < BBS_username_min_len || i > BBS_username_max_len))
        {
                ok = 0;
        }
        for (i = 0; ok && password[i] != '\0'; i++)
        {
                if (!isalnum(password[i]))
                {
                        ok = 0;
                }
        }
        if (ok && (i < BBS_password_min_len || i > BBS_password_max_len))
        {
                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	1.64	static const int BBS_username_min_len = 3; // common len = 5, special len = 3
36			static const int BBS_password_min_len = 5; // legacy len = 5, current len = 6
37
38	sysadm	1.41	int bbs_login(void)
39	sysadm	1.1	{
40	sysadm	1.15	char username[BBS_username_max_len + 1];
41			char password[BBS_password_max_len + 1];
42	sysadm	1.37	int i = 0;
43	sysadm	1.16	int ok = 0;
44	sysadm	1.2
45	sysadm	1.37	for (; !SYS_server_exit && !ok && i < BBS_login_retry_times; i++)
46	sysadm	1.11	{
47	sysadm	1.49	prints("\033[1;33m请输入帐号\033[m(试用请输入`\033[1;36mguest\033[m', "
48			"注册请输入`\033[1;31mnew\033[m'): ");
49	sysadm	1.11	iflush();
50
51	sysadm	1.24	if (str_input(username, sizeof(username), DOECHO) < 0)
52			{
53			continue;
54			}
55	sysadm	1.11
56			if (strcmp(username, "guest") == 0)
57			{
58	sysadm	1.41	load_guest_info();
59	sysadm	1.14
60	sysadm	1.11	return 0;
61			}
62
63			if (strcmp(username, "new") == 0)
64			{
65	sysadm	1.42	display_file(DATA_REGISTER, 1);
66	sysadm	1.30
67	sysadm	1.51	return -1;
68	sysadm	1.11	}
69
70	sysadm	1.17	if (username[0] != '\0')
71	sysadm	1.11	{
72	sysadm	1.49	prints("\033[1;37m请输入密码\033[m: ");
73	sysadm	1.11	iflush();
74
75	sysadm	1.24	if (str_input(password, sizeof(password), NOECHO) < 0)
76			{
77			continue;
78			}
79	sysadm	1.11
80	sysadm	1.41	ok = (check_user(username, password) == 0);
81	sysadm	1.31	iflush();
82	sysadm	1.11	}
83	sysadm	1.24	}
84
85			if (!ok)
86			{
87	sysadm	1.42	display_file(DATA_LOGIN_ERROR, 1);
88	sysadm	1.24	return -1;
89	sysadm	1.11	}
90	sysadm	1.2
91	sysadm	1.38	log_common("User \"%s\"(%ld) login from %s:%d\n",
92	sysadm	1.39	BBS_username, BBS_priv.uid, hostaddr_client, port_client);
93	sysadm	1.28
94	sysadm	1.11	return 0;
95			}
96	sysadm	1.2
97	sysadm	1.41	int check_user(const char username, const char password)
98	sysadm	1.11	{
99	sysadm	1.44	MYSQL *db = NULL;
100			MYSQL_RES *rs = NULL;
101	sysadm	1.11	MYSQL_ROW row;
102	sysadm	1.15	char sql[SQL_BUFFER_LEN];
103	sysadm	1.44	int ret = 0;
104	sysadm	1.40	int BBS_uid = 0;
105	sysadm	1.22	char client_addr[IP_ADDR_LEN];
106	sysadm	1.27	int i;
107			int ok = 1;
108	sysadm	1.34	char user_tz_env[BBS_user_tz_max_len + 2];
109	sysadm	1.11
110	sysadm	1.41	db = db_open();
111			if (db == NULL)
112			{
113	sysadm	1.44	ret = -1;
114			goto cleanup;
115	sysadm	1.41	}
116
117	sysadm	1.11	// Verify format
118	sysadm	1.27	for (i = 0; ok && username[i] != '\0'; i++)
119			{
120	sysadm	1.63	if (!(isalpha(username[i]) \|\| (i > 0 && (isdigit(username[i]) \|\| username[i] == '_'))))
121	sysadm	1.27	{
122			ok = 0;
123			}
124			}
125	sysadm	1.64	if (ok && (i < BBS_username_min_len \|\| i > BBS_username_max_len))
126	sysadm	1.27	{
127			ok = 0;
128			}
129			for (i = 0; ok && password[i] != '\0'; i++)
130			{
131			if (!isalnum(password[i]))
132			{
133			ok = 0;
134			}
135			}
136	sysadm	1.64	if (ok && (i < BBS_password_min_len \|\| i > BBS_password_max_len))
137	sysadm	1.27	{
138			ok = 0;
139			}
140
141			if (!ok)
142	sysadm	1.5	{
143	sysadm	1.49	prints("\033[1;31m用户名或密码格式错误...\033[m\r\n");
144	sysadm	1.44	ret = 1;
145			goto cleanup;
146	sysadm	1.5	}
147
148	sysadm	1.13	// Begin transaction
149			if (mysql_query(db, "SET autocommit=0") != 0)
150			{
151	sysadm	1.33	log_error("SET autocommit=0 error: %s\n", mysql_error(db));
152	sysadm	1.44	ret = -1;
153			goto cleanup;
154	sysadm	1.13	}
155
156			if (mysql_query(db, "BEGIN") != 0)
157			{
158	sysadm	1.33	log_error("Begin transaction error: %s\n", mysql_error(db));
159	sysadm	1.44	ret = -1;
160			goto cleanup;
161	sysadm	1.13	}
162
163	sysadm	1.22	// Failed login attempts from the same source (subnet /24) during certain time period
164			strncpy(client_addr, hostaddr_client, sizeof(client_addr) - 1);
165			client_addr[sizeof(client_addr) - 1] = '\0';
166
167			snprintf(sql, sizeof(sql),
168			"SELECT COUNT(*) AS err_count FROM user_err_login_log "
169	sysadm	1.44	"WHERE login_dt >= SUBDATE(NOW(), INTERVAL %d MINUTE) "
170	sysadm	1.22	"AND login_ip LIKE '%s'",
171	sysadm	1.44	BBS_login_failures_count_interval,
172	sysadm	1.22	ip_mask(client_addr, 1, '%'));
173			if (mysql_query(db, sql) != 0)
174			{
175	sysadm	1.33	log_error("Query user_list error: %s\n", mysql_error(db));
176	sysadm	1.44	ret = -1;
177			goto cleanup;
178	sysadm	1.22	}
179			if ((rs = mysql_store_result(db)) == NULL)
180			{
181			log_error("Get user_list data failed\n");
182	sysadm	1.44	ret = -1;
183			goto cleanup;
184	sysadm	1.22	}
185			if ((row = mysql_fetch_row(rs)))
186			{
187	sysadm	1.52	if (atoi(row[0]) >= BBS_allowed_login_failures_within_interval)
188	sysadm	1.22	{
189	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");
190	sysadm	1.44	ret = 1;
191			goto cleanup;
192	sysadm	1.22	}
193			}
194			mysql_free_result(rs);
195	sysadm	1.44	rs = NULL;
196	sysadm	1.22
197	sysadm	1.52	// Failed login attempts against the current username since last successful login
198	sysadm	1.22	snprintf(sql, sizeof(sql),
199			"SELECT COUNT(*) AS err_count FROM user_err_login_log "
200	sysadm	1.52	"LEFT JOIN user_list ON user_err_login_log.username = user_list.username "
201			"LEFT JOIN user_pubinfo ON user_list.UID = user_pubinfo.UID "
202			"WHERE user_err_login_log.username = '%s' "
203			"AND (user_err_login_log.login_dt >= user_pubinfo.last_login_dt "
204			"OR user_pubinfo.last_login_dt IS NULL)",
205	sysadm	1.22	username);
206			if (mysql_query(db, sql) != 0)
207			{
208	sysadm	1.33	log_error("Query user_list error: %s\n", mysql_error(db));
209	sysadm	1.44	ret = -1;
210			goto cleanup;
211	sysadm	1.22	}
212			if ((rs = mysql_store_result(db)) == NULL)
213			{
214			log_error("Get user_list data failed\n");
215	sysadm	1.44	ret = -1;
216			goto cleanup;
217	sysadm	1.22	}
218			if ((row = mysql_fetch_row(rs)))
219			{
220	sysadm	1.53	if (atoi(row[0]) >= BBS_allowed_login_failures_per_account)
221	sysadm	1.22	{
222	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");
223	sysadm	1.44	ret = 1;
224			goto cleanup;
225	sysadm	1.22	}
226			}
227			mysql_free_result(rs);
228	sysadm	1.44	rs = NULL;
229	sysadm	1.22
230	sysadm	1.18	snprintf(sql, sizeof(sql),
231	sysadm	1.22	"SELECT UID, username, p_login FROM user_list "
232			"WHERE username = '%s' AND password = SHA2('%s', 256) AND enable",
233			username, password);
234	sysadm	1.11	if (mysql_query(db, sql) != 0)
235			{
236	sysadm	1.33	log_error("Query user_list error: %s\n", mysql_error(db));
237	sysadm	1.44	ret = -1;
238			goto cleanup;
239	sysadm	1.11	}
240			if ((rs = mysql_store_result(db)) == NULL)
241	sysadm	1.2	{
242	sysadm	1.11	log_error("Get user_list data failed\n");
243	sysadm	1.44	ret = -1;
244			goto cleanup;
245	sysadm	1.11	}
246	sysadm	1.15	if ((row = mysql_fetch_row(rs)))
247	sysadm	1.11	{
248	sysadm	1.40	BBS_uid = atoi(row[0]);
249	sysadm	1.17	strncpy(BBS_username, row[1], sizeof(BBS_username) - 1);
250			BBS_username[sizeof(BBS_username) - 1] = '\0';
251	sysadm	1.13	int p_login = atoi(row[2]);
252
253			mysql_free_result(rs);
254	sysadm	1.44	rs = NULL;
255	sysadm	1.13
256			// Add user login log
257	sysadm	1.18	snprintf(sql, sizeof(sql),
258	sysadm	1.22	"INSERT INTO user_login_log(UID, login_dt, login_ip) "
259	sysadm	1.40	"VALUES(%d, NOW(), '%s')",
260	sysadm	1.22	BBS_uid, hostaddr_client);
261	sysadm	1.13	if (mysql_query(db, sql) != 0)
262			{
263	sysadm	1.33	log_error("Insert into user_login_log error: %s\n", mysql_error(db));
264	sysadm	1.44	ret = -1;
265			goto cleanup;
266	sysadm	1.13	}
267
268			// Commit transaction
269			if (mysql_query(db, "COMMIT") != 0)
270			{
271	sysadm	1.33	log_error("Commit transaction error: %s\n", mysql_error(db));
272	sysadm	1.44	ret = -1;
273			goto cleanup;
274	sysadm	1.13	}
275
276			if (p_login == 0)
277	sysadm	1.11	{
278	sysadm	1.49	prints("\033[1;31m您目前无权登陆...\033[m\r\n");
279	sysadm	1.44	ret = 1;
280			goto cleanup;
281	sysadm	1.11	}
282			}
283			else
284			{
285			mysql_free_result(rs);
286	sysadm	1.44	rs = NULL;
287	sysadm	1.2
288	sysadm	1.18	snprintf(sql, sizeof(sql),
289	sysadm	1.22	"INSERT INTO user_err_login_log(username, password, login_dt, login_ip) "
290			"VALUES('%s', '%s', NOW(), '%s')",
291			username, password, hostaddr_client);
292	sysadm	1.11	if (mysql_query(db, sql) != 0)
293			{
294	sysadm	1.33	log_error("Insert into user_err_login_log error: %s\n", mysql_error(db));
295	sysadm	1.44	ret = -1;
296			goto cleanup;
297	sysadm	1.11	}
298
299	sysadm	1.13	// Commit transaction
300			if (mysql_query(db, "COMMIT") != 0)
301			{
302	sysadm	1.33	log_error("Commit transaction error: %s\n", mysql_error(db));
303	sysadm	1.44	ret = -1;
304			goto cleanup;
305	sysadm	1.13	}
306
307	sysadm	1.49	prints("\033[1;31m错误的用户名或密码...\033[m\r\n");
308	sysadm	1.44	ret = 1;
309			goto cleanup;
310	sysadm	1.11	}
311	sysadm	1.13
312			// Set AUTOCOMMIT = 1
313			if (mysql_query(db, "SET autocommit=1") != 0)
314			{
315	sysadm	1.33	log_error("SET autocommit=1 error: %s\n", mysql_error(db));
316	sysadm	1.44	ret = -1;
317			goto cleanup;
318	sysadm	1.13	}
319	sysadm	1.2
320	sysadm	1.11	ret = load_user_info(db, BBS_uid);
321
322			switch (ret)
323	sysadm	1.2	{
324	sysadm	1.11	case 0: // Login successfully
325			break;
326			case -1: // Load data error
327	sysadm	1.49	prints("\033[1;31m读取用户数据错误...\033[m\r\n");
328	sysadm	1.44	ret = -1;
329			goto cleanup;
330	sysadm	1.11	case -2: // Unused
331	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");
332	sysadm	1.44	ret = 1;
333			goto cleanup;
334	sysadm	1.11	case -3: // Dead
335	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");
336	sysadm	1.44	ret = 1;
337			goto cleanup;
338	sysadm	1.11	default:
339	sysadm	1.44	ret = -2;
340			goto cleanup;
341	sysadm	1.2	}
342
343	sysadm	1.18	snprintf(sql, sizeof(sql),
344	sysadm	1.22	"UPDATE user_pubinfo SET visit_count = visit_count + 1, "
345	sysadm	1.40	"last_login_dt = NOW() WHERE UID = %d",
346	sysadm	1.22	BBS_uid);
347	sysadm	1.13	if (mysql_query(db, sql) != 0)
348			{
349	sysadm	1.33	log_error("Update user_pubinfo error: %s\n", mysql_error(db));
350	sysadm	1.44	ret = -1;
351			goto cleanup;
352	sysadm	1.13	}
353
354	sysadm	1.15	if (user_online_add(db) != 0)
355			{
356	sysadm	1.44	ret = -1;
357			goto cleanup;
358	sysadm	1.15	}
359
360	sysadm	1.45	BBS_last_access_tm = BBS_login_tm = time(NULL);
361	sysadm	1.13
362	sysadm	1.34	// Set user tz to process env
363			if (BBS_user_tz[0] != '\0')
364			{
365			user_tz_env[0] = ':';
366			strncpy(user_tz_env + 1, BBS_user_tz, sizeof(user_tz_env) - 2);
367			user_tz_env[sizeof(user_tz_env) - 1] = '\0';
368
369			if (setenv("TZ", user_tz_env, 1) == -1)
370			{
371			log_error("setenv(TZ = %s) error %d\n", user_tz_env, errno);
372			return -3;
373			}
374
375			tzset();
376			}
377
378	sysadm	1.44	cleanup:
379			mysql_free_result(rs);
380	sysadm	1.41	mysql_close(db);
381
382	sysadm	1.44	return ret;
383	sysadm	1.1	}
384	sysadm	1.2
385	sysadm	1.40	int load_user_info(MYSQL *db, int BBS_uid)
386	sysadm	1.3	{
387	sysadm	1.44	MYSQL_RES *rs = NULL;
388	sysadm	1.11	MYSQL_ROW row;
389	sysadm	1.15	char sql[SQL_BUFFER_LEN];
390	sysadm	1.11	int life;
391			time_t last_login_dt;
392	sysadm	1.44	int ret = 0;
393	sysadm	1.11
394	sysadm	1.18	snprintf(sql, sizeof(sql),
395	sysadm	1.43	"SELECT life, UNIX_TIMESTAMP(last_login_dt), user_timezone, exp, nickname "
396	sysadm	1.40	"FROM user_pubinfo WHERE UID = %d",
397	sysadm	1.22	BBS_uid);
398	sysadm	1.11	if (mysql_query(db, sql) != 0)
399			{
400	sysadm	1.33	log_error("Query user_pubinfo error: %s\n", mysql_error(db));
401	sysadm	1.44	ret = -1;
402			goto cleanup;
403	sysadm	1.11	}
404			if ((rs = mysql_store_result(db)) == NULL)
405			{
406			log_error("Get user_pubinfo data failed\n");
407	sysadm	1.44	ret = -1;
408			goto cleanup;
409	sysadm	1.11	}
410	sysadm	1.15	if ((row = mysql_fetch_row(rs)))
411	sysadm	1.11	{
412			life = atoi(row[0]);
413			last_login_dt = (time_t)atol(row[1]);
414	sysadm	1.34
415			strncpy(BBS_user_tz, row[2], sizeof(BBS_user_tz) - 1);
416			BBS_user_tz[sizeof(BBS_user_tz) - 1] = '\0';
417	sysadm	1.43
418			BBS_user_exp = atoi(row[3]);
419
420			strncpy(BBS_nickname, row[4], sizeof(BBS_nickname));
421			BBS_nickname[sizeof(BBS_nickname) - 1] = '\0';
422	sysadm	1.11	}
423			else
424			{
425	sysadm	1.44	ret = -1; // Data not found
426			goto cleanup;
427	sysadm	1.11	}
428			mysql_free_result(rs);
429	sysadm	1.44	rs = NULL;
430	sysadm	1.3
431	sysadm	1.13	if (life != 333 && life != 365 && life != 666 && life != 999 && // Not immortal
432	sysadm	1.45	time(NULL) - last_login_dt > 60 * 60 * 24 * life)
433	sysadm	1.11	{
434	sysadm	1.44	ret = -3; // Dead
435			goto cleanup;
436	sysadm	1.11	}
437	sysadm	1.5
438	sysadm	1.15	if (load_priv(db, &BBS_priv, BBS_uid) != 0)
439			{
440	sysadm	1.44	ret = -1;
441			goto cleanup;
442	sysadm	1.15	}
443	sysadm	1.11
444	sysadm	1.44	cleanup:
445			mysql_free_result(rs);
446
447			return ret;
448	sysadm	1.2	}
449	sysadm	1.5
450	sysadm	1.41	int load_guest_info(void)
451	sysadm	1.5	{
452	sysadm	1.44	MYSQL *db = NULL;
453			int ret = 0;
454	sysadm	1.41
455			db = db_open();
456			if (db == NULL)
457			{
458	sysadm	1.44	ret = -1;
459			goto cleanup;
460	sysadm	1.41	}
461
462	sysadm	1.17	strncpy(BBS_username, "guest", sizeof(BBS_username) - 1);
463			BBS_username[sizeof(BBS_username) - 1] = '\0';
464	sysadm	1.5
465	sysadm	1.43	BBS_user_exp = 0;
466
467			strncpy(BBS_nickname, "Guest", sizeof(BBS_nickname));
468			BBS_nickname[sizeof(BBS_nickname) - 1] = '\0';
469
470	sysadm	1.15	if (load_priv(db, &BBS_priv, 0) != 0)
471			{
472	sysadm	1.44	ret = -1;
473			goto cleanup;
474	sysadm	1.15	}
475	sysadm	1.6
476	sysadm	1.15	if (user_online_add(db) != 0)
477			{
478	sysadm	1.44	ret = -1;
479			goto cleanup;
480	sysadm	1.15	}
481	sysadm	1.5
482	sysadm	1.45	BBS_last_access_tm = BBS_login_tm = time(NULL);
483	sysadm	1.5
484	sysadm	1.44	cleanup:
485	sysadm	1.41	mysql_close(db);
486	sysadm	1.44
487			return ret;
488	sysadm	1.5	}
489	sysadm	1.15
490			int user_online_add(MYSQL *db)
491			{
492			char sql[SQL_BUFFER_LEN];
493
494	sysadm	1.60	snprintf(sql, sizeof(sql),
495			"INSERT INTO visit_log(dt, IP) VALUES(NOW(), '%s')",
496			hostaddr_client);
497			if (mysql_query(db, sql) != 0)
498			{
499			log_error("Add visit log error: %s\n", mysql_error(db));
500			return -1;
501			}
502
503	sysadm	1.15	if (user_online_del(db) != 0)
504			{
505	sysadm	1.60	return -2;
506	sysadm	1.15	}
507
508	sysadm	1.18	snprintf(sql, sizeof(sql),
509	sysadm	1.61	"INSERT INTO user_online(SID, UID, ip, current_action, login_tm, last_tm) "
510			"VALUES('Telnet_Process_%d', %d, '%s', 'LOGIN', NOW(), NOW())",
511	sysadm	1.22	getpid(), BBS_priv.uid, hostaddr_client);
512	sysadm	1.15	if (mysql_query(db, sql) != 0)
513			{
514	sysadm	1.33	log_error("Add user_online error: %s\n", mysql_error(db));
515	sysadm	1.60	return -3;
516	sysadm	1.15	}
517
518			return 0;
519			}
520
521			int user_online_del(MYSQL *db)
522			{
523			char sql[SQL_BUFFER_LEN];
524
525	sysadm	1.57	snprintf(sql, sizeof(sql),
526			"DELETE FROM user_online WHERE SID = 'Telnet_Process_%d'",
527			getpid());
528			if (mysql_query(db, sql) != 0)
529			{
530			log_error("Delete user_online error: %s\n", mysql_error(db));
531			return -1;
532			}
533
534			return 0;
535			}
536
537			int user_online_exp(MYSQL *db)
538			{
539			char sql[SQL_BUFFER_LEN];
540
541	sysadm	1.56	// +1 exp for every 5 minutes online since last logout
542			// but at most 24 hours worth of exp can be gained in Telnet session
543			snprintf(sql, sizeof(sql),
544	sysadm	1.60	"UPDATE user_pubinfo SET exp = exp + FLOOR(LEAST(TIMESTAMPDIFF("
545			"SECOND, GREATEST(last_login_dt, IF(last_logout_dt IS NULL, last_login_dt, last_logout_dt)), NOW()"
546			") / 60 / 5, 12 * 24)), last_logout_dt = NOW() "
547			"WHERE UID = %d",
548			BBS_priv.uid);
549	sysadm	1.56	if (mysql_query(db, sql) != 0)
550			{
551			log_error("Update user_pubinfo error: %s\n", mysql_error(db));
552			return -1;
553			}
554	sysadm	1.15
555			return 0;
556			}
557	sysadm	1.47
558			int user_online_update(const char *action)
559			{
560			MYSQL *db = NULL;
561			char sql[SQL_BUFFER_LEN];
562
563	sysadm	1.55	if ((action == NULL \|\| strcmp(BBS_current_action, action) == 0) &&
564	sysadm	1.54	time(NULL) - BBS_current_action_tm < BBS_current_action_refresh_interval) // No change
565	sysadm	1.47	{
566			return 0;
567			}
568
569	sysadm	1.55	if (action != NULL)
570			{
571			strncpy(BBS_current_action, action, sizeof(BBS_current_action) - 1);
572			BBS_current_action[sizeof(BBS_current_action) - 1] = '\0';
573			}
574
575	sysadm	1.54	BBS_current_action_tm = time(NULL);
576	sysadm	1.47
577			db = db_open();
578			if (db == NULL)
579			{
580			log_error("db_open() error: %s\n", mysql_error(db));
581			return -1;
582			}
583
584			snprintf(sql, sizeof(sql),
585	sysadm	1.62	"UPDATE user_online SET current_action = '%s', last_tm = NOW() "
586	sysadm	1.47	"WHERE SID = 'Telnet_Process_%d'",
587			BBS_current_action, getpid());
588			if (mysql_query(db, sql) != 0)
589			{
590			log_error("Update user_online error: %s\n", mysql_error(db));
591			return -2;
592			}
593
594			mysql_close(db);
595
596			return 1;
597			}
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