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/*************************************************************************** |
/* SPDX-License-Identifier: GPL-3.0-or-later */ |
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login.c - description |
/* |
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------------------- |
* login |
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Copyright : (C) 2004-2025 by Leaflet |
* - user authentication and online status manager |
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Email : leaflet@leafok.com |
* |
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***************************************************************************/ |
* Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com> |
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*/ |
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/*************************************************************************** |
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* * |
#ifdef HAVE_CONFIG_H |
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* This program is free software; you can redistribute it and/or modify * |
#include "config.h" |
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* it under the terms of the GNU General Public License as published by * |
#endif |
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* the Free Software Foundation; either version 3 of the License, or * |
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* (at your option) any later version. * |
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* * |
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***************************************************************************/ |
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#include "bbs.h" |
#include "bbs.h" |
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#include "common.h" |
#include "common.h" |
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#include <mysql/mysql.h> |
#include <mysql/mysql.h> |
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#include <sys/param.h> |
#include <sys/param.h> |
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static const int BBS_username_min_len = 3; // common len = 5, special len = 3 |
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static const int BBS_password_min_len = 5; // legacy len = 5, current len = 6 |
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static const int BBS_allowed_login_failures_within_interval = 10; |
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static const int BBS_login_failures_count_interval = 10; // minutes |
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static const int BBS_allowed_login_failures_per_account = 3; |
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const int BBS_login_retry_times = 3; |
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int bbs_login(void) |
int bbs_login(void) |
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{ |
{ |
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char username[BBS_username_max_len + 1]; |
char username[BBS_username_max_len + 1]; |
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// Verify format |
// Verify format |
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for (i = 0; ok && username[i] != '\0'; i++) |
for (i = 0; ok && username[i] != '\0'; i++) |
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{ |
{ |
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if (!(isalpha(username[i]) || (i > 0 && isdigit(username[i])))) |
if (!(isalpha(username[i]) || (i > 0 && (isdigit(username[i]) || username[i] == '_')))) |
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{ |
{ |
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ok = 0; |
ok = 0; |
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} |
} |
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} |
} |
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if (ok && (i < 3 || i > 12)) |
if (ok && (i < BBS_username_min_len || i > BBS_username_max_len)) |
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{ |
{ |
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ok = 0; |
ok = 0; |
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} |
} |
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ok = 0; |
ok = 0; |
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} |
} |
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} |
} |
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if (ok && (i < 5 || i > 12)) |
if (ok && (i < BBS_password_min_len || i > BBS_password_max_len)) |
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{ |
{ |
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ok = 0; |
ok = 0; |
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} |
} |
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{ |
{ |
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char sql[SQL_BUFFER_LEN]; |
char sql[SQL_BUFFER_LEN]; |
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if (user_online_del(db) != 0) |
snprintf(sql, sizeof(sql), |
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"INSERT INTO visit_log(dt, IP) VALUES(NOW(), '%s')", |
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hostaddr_client); |
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if (mysql_query(db, sql) != 0) |
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{ |
{ |
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log_error("Add visit log error: %s\n", mysql_error(db)); |
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return -1; |
return -1; |
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} |
} |
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if (user_online_del(db) != 0) |
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{ |
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return -2; |
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} |
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snprintf(sql, sizeof(sql), |
snprintf(sql, sizeof(sql), |
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"INSERT INTO user_online(SID, UID, ip, login_tm, last_tm) " |
"INSERT INTO user_online(SID, UID, ip, current_action, login_tm, last_tm) " |
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"VALUES('Telnet_Process_%d', %d, '%s', NOW(), NOW())", |
"VALUES('Telnet_Process_%d', %d, '%s', 'LOGIN', NOW(), NOW())", |
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getpid(), BBS_priv.uid, hostaddr_client); |
getpid(), BBS_priv.uid, hostaddr_client); |
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if (mysql_query(db, sql) != 0) |
if (mysql_query(db, sql) != 0) |
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{ |
{ |
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log_error("Add user_online error: %s\n", mysql_error(db)); |
log_error("Add user_online error: %s\n", mysql_error(db)); |
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return -1; |
return -3; |
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} |
} |
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return 0; |
return 0; |
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{ |
{ |
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char sql[SQL_BUFFER_LEN]; |
char sql[SQL_BUFFER_LEN]; |
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// +1 exp for every 5 minutes online since last logout |
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// but at most 24 hours worth of exp can be gained in Telnet session |
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snprintf(sql, sizeof(sql), |
snprintf(sql, sizeof(sql), |
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"UPDATE user_pubinfo SET exp = exp + " |
"DELETE FROM user_online WHERE SID = 'Telnet_Process_%d'", |
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"FLOOR((UNIX_TIMESTAMP() - GREATEST(IF(last_logout_dt IS NULL, 0, UNIX_TIMESTAMP(last_logout_dt)), %ld)) / 60 / 5), " |
getpid()); |
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"last_logout_dt = NOW() " |
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"WHERE UID = %d", |
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MAX(BBS_login_tm, time(NULL) - 60 * 60 * 24), |
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BBS_priv.uid); |
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if (mysql_query(db, sql) != 0) |
if (mysql_query(db, sql) != 0) |
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{ |
{ |
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log_error("Update user_pubinfo error: %s\n", mysql_error(db)); |
log_error("Delete user_online error: %s\n", mysql_error(db)); |
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return -1; |
return -1; |
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} |
} |
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return 0; |
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} |
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int user_online_exp(MYSQL *db) |
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{ |
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char sql[SQL_BUFFER_LEN]; |
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// +1 exp for every 5 minutes online since last logout |
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// but at most 24 hours worth of exp can be gained in Telnet session |
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snprintf(sql, sizeof(sql), |
snprintf(sql, sizeof(sql), |
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"DELETE FROM user_online WHERE SID = 'Telnet_Process_%d'", |
"UPDATE user_pubinfo SET exp = exp + FLOOR(LEAST(TIMESTAMPDIFF(" |
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getpid()); |
"SECOND, GREATEST(last_login_dt, IF(last_logout_dt IS NULL, last_login_dt, last_logout_dt)), NOW()" |
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") / 60 / 5, 12 * 24)), last_logout_dt = NOW() " |
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"WHERE UID = %d", |
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BBS_priv.uid); |
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if (mysql_query(db, sql) != 0) |
if (mysql_query(db, sql) != 0) |
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{ |
{ |
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log_error("Delete user_online error: %s\n", mysql_error(db)); |
log_error("Update user_pubinfo error: %s\n", mysql_error(db)); |
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return -2; |
return -1; |
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} |
} |
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return 0; |
return 0; |
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} |
} |
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snprintf(sql, sizeof(sql), |
snprintf(sql, sizeof(sql), |
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"UPDATE user_online SET current_action = '%s', last_tm=NOW() " |
"UPDATE user_online SET current_action = '%s', last_tm = NOW() " |
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"WHERE SID = 'Telnet_Process_%d'", |
"WHERE SID = 'Telnet_Process_%d'", |
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BBS_current_action, getpid()); |
BBS_current_action, getpid()); |
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if (mysql_query(db, sql) != 0) |
if (mysql_query(db, sql) != 0) |