Snippets
Created by
Leslie Krause
last modified
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 | --------------------------------------------------------
-- Minetest :: Auth Redux Lite Mod v2.7 (auth_rx)
--
-- See README.txt for licensing and release notes.
-- Copyright (c) 2017-2020, Leslie E. Krause
--------------------------------------------------------
local LOG_STARTED = 10
local LOG_CHECKED = 11
local LOG_STOPPED = 12
local TX_CREATE = 20
local TX_DELETE = 21
local TX_SET_PASSWORD = 40
local TX_SET_APPROVED_ADDRS = 41
local TX_SET_ASSIGNED_PRIVS = 42
local TX_SESSION_OPENED = 50
local TX_SESSION_CLOSED = 51
local TX_LOGIN_ATTEMPT = 30
local TX_LOGIN_FAILURE = 31
local TX_LOGIN_SUCCESS = 32
function Journal( path, name, is_rollback )
local file, err = io.open( path .. "/" .. name, "r+b" )
local self = { }
local cursor = 0
local rtime = 1.0
if not file then
minetest.log( "error", "Cannot open " .. path .. "/" .. name .. " for writing." )
error( "Fatal exception in Journal( ), aborting." )
end
self.audit = function ( update_proc, is_rollback )
if not is_rollback then
minetest.log( "action", "Advancing database transaction log...." )
for line in file:lines( ) do
local fields = string.split( line, " ", true )
if tonumber( fields[ 2 ] ) == LOG_STOPPED then
cursor = file:seek( )
end
end
file:seek( "set", cursor )
end
local meta = { }
minetest.log( "action", "Replaying database transaction log...." )
for line in file:lines( ) do
local fields = string.split( line, " ", true )
local optime = tonumber( fields[ 1 ] )
local opcode = tonumber( fields[ 2 ] )
update_proc( meta, optime, opcode, select( 3, unpack( fields ) ) )
if opcode == LOG_CHECKED then
minetest.log( "action", "Resetting database transaction log..." )
file:seek( "set", cursor )
file:write( optime .. " " .. LOG_STOPPED .. "\n" )
return optime
end
cursor = file:seek( )
end
end
self.start = function ( )
self.optime = os.time( )
file:seek( "end", 0 )
file:write( self.optime .. " " .. LOG_STARTED .. "\n" )
cursor = file:seek( )
file:write( self.optime .. " " .. LOG_CHECKED .. "\n" )
end
self.reset = function ( )
file:seek( "set", cursor )
file:write( self.optime .. " " .. LOG_STOPPED .. "\n" )
self.optime = nil
end
self.record_raw = function ( opcode, ... )
file:seek( "set", cursor )
file:write( table.concat( { self.optime, opcode, ... }, " " ) .. "\n" )
cursor = file:seek( )
file:write( self.optime .. " " .. LOG_CHECKED .. "\n" )
end
minetest.register_globalstep( function( dtime )
rtime = rtime - dtime
if rtime <= 0.0 then
if self.optime then
self.optime = os.time( )
file:seek( "set", cursor )
file:write( self.optime .. " " .. LOG_CHECKED .. "\n" )
end
rtime = 1.0
end
end )
return self
end
function AuthDatabase( path, name )
local data, users, index
local self = { }
local journal = Journal( path, name .. "x" )
local db_update = function( meta, optime, opcode, ... )
local fields = { ... }
if opcode == TX_CREATE then
local rec = { password = fields[ 2 ], oldlogin = -1, newlogin = -1, lifetime = 0, total_sessions = 0, total_attempts = 0, total_failures = 0, approved_addrs = { }, assigned_privs = { } }
data[ fields[ 1 ] ] = rec
elseif opcode == TX_DELETE then
data[ fields[ 1 ] ] = nil
elseif opcode == TX_SET_PASSWORD then
data[ fields[ 1 ] ].password = fields[ 2 ]
elseif opcode == TX_SET_APPROVED_ADDRS then
data[ fields[ 1 ] ].filered_addrs = string.split( fields[ 2 ], ",", true )
elseif opcode == TX_SET_ASSIGNED_PRIVS then
data[ fields[ 1 ] ].assigned_privs = string.split( fields[ 2 ], ",", true )
elseif opcode == TX_LOGIN_ATTEMPT then
data[ fields[ 1 ] ].total_attempts = data[ fields[ 1 ] ].total_attempts + 1
elseif opcode == TX_LOGIN_FAILURE then
data[ fields[ 1 ] ].total_failures = data[ fields[ 1 ] ].total_failures + 1
elseif opcode == TX_LOGIN_SUCCESS then
if data[ fields[ 1 ] ].oldlogin == -1 then
data[ fields[ 1 ] ].oldlogin = optime
end
meta.users[ fields[ 1 ] ] = data[ fields[ 1 ] ].newlogin
data[ fields[ 1 ] ].newlogin = optime
elseif opcode == TX_SESSION_OPENED then
data[ fields[ 1 ] ].total_sessions = data[ fields[ 1 ] ].total_sessions + 1
elseif opcode == TX_SESSION_CLOSED then
data[ fields[ 1 ] ].lifetime = data[ fields[ 1 ] ].lifetime + ( optime - data[ fields[ 1 ] ].newlogin )
meta.users[ fields[ 1 ] ] = nil
elseif opcode == LOG_STARTED then
meta.users = { }
elseif opcode == LOG_CHECKED or opcode == LOG_STOPPED then
for u, t in pairs( meta.users ) do
data[ u ].lifetime = data[ u ].lifetime + ( optime - data[ u ].newlogin )
end
meta.users = nil
end
end
local db_reload = function ( )
minetest.log( "action", "Reading authentication data from disk..." )
local file, errmsg = io.open( path .. "/" .. name, "r+b" )
if not file then
minetest.log( "error", "Cannot open " .. path .. "/" .. name .. " for reading." )
error( "Fatal exception in AuthDatabase:db_reload( ), aborting." )
end
local head = assert( file:read( "*line" ) )
index = tonumber( string.match( head, "^auth_rx/2.1 @(%d+)$" ) )
if not index or index < 0 then
minetest.log( "error", "Invalid header in authentication database." )
error( "Fatal exception in AuthDatabase:db_reload( ), aborting." )
end
for line in file:lines( ) do
if line ~= "" then
local fields = string.split( line, ":", true )
if #fields ~= 10 then
minetest.log( "error", "Invalid record in authentication database." )
error( "Fatal exception in AuthDatabase:db_reload( ), aborting." )
end
data[ fields[ 1 ] ] = {
password = fields[ 2 ],
oldlogin = tonumber( fields[ 3 ] ),
newlogin = tonumber( fields[ 4 ] ),
lifetime = tonumber( fields[ 5 ] ),
total_sessions = tonumber( fields[ 6 ] ),
total_attempts = tonumber( fields[ 7 ] ),
total_failures = tonumber( fields[ 8 ] ),
approved_addrs = string.split( fields[ 9 ], "," ),
assigned_privs = string.split( fields[ 10 ], "," ),
}
end
end
file:close( )
end
local db_commit = function ( )
minetest.log( "action", "Writing authentication data to disk..." )
local file, errmsg = io.open( path .. "/~" .. name, "w+b" )
if not file then
minetest.log( "error", "Cannot open " .. path .. "/~" .. name .. " for writing." )
error( "Fatal exception in AuthDatabase:db_commit( ), aborting." )
end
index = index + 1
file:write( "auth_rx/2.1 @" .. index .. "\n" )
for username, rec in pairs( data ) do
assert( file:write(
table.concat( { username, rec.password, rec.oldlogin, rec.newlogin, rec.lifetime, rec.total_sessions, rec.total_attempts, rec.total_failures, table.concat( rec.approved_addrs, "," ), table.concat( rec.assigned_privs, "," ) }, ":" )
.. "\n" ) )
end
file:close( )
assert( os.remove( path .. "/" .. name ) )
assert( os.rename( path .. "/~" .. name, path .. "/" .. name ) )
end
self.rollback = function ( )
data = { }
db_reload( )
journal.audit( db_update, true )
db_commit( )
data = nil
end
self.connect = function ( )
data = { }
users = { }
db_reload( )
if journal.audit( db_update, false ) then
db_commit( )
end
journal.start( )
end
self.disconnect = function ( )
for u, t in pairs( users ) do
data[ u ].lifetime = data[ u ].lifetime + ( journal.optime - data[ u ].newlogin )
end
db_commit( )
journal.reset( )
data = nil
users = nil
end
self.select_record = function ( username )
return data[ username ]
end
self.create_record = function ( username, password )
if data[ username ] then return false end
local rec = { password = password, oldlogin = -1, newlogin = -1, lifetime = 0, total_sessions = 0, total_attempts = 0, total_failures = 0, approved_addrs = { }, assigned_privs = { } }
data[ username ] = rec
journal.record_raw( TX_CREATE, username, password )
return true
end
self.delete_record = function ( username )
if not data[ username ] or users[ username ] then return false end
data[ username ] = nil
journal.record_raw( TX_DELETE, username )
return true
end
self.set_password = function ( username, password )
if not data[ username ] then return false end
data[ username ].password = password
journal.record_raw( TX_SET_PASSWORD, username, password )
return true
end
self.set_assigned_privs = function ( username, assigned_privs )
if not data[ username ] then return false end
data[ username ].assigned_privs = assigned_privs
journal.record_raw( TX_SET_ASSIGNED_PRIVS, username, table.concat( assigned_privs, "," ) )
return true
end
self.set_approved_addrs = function ( username, approved_addrs )
if not data[ username ] then return false end
data[ username ].approved_addrs = approved_addrs
journal.record_raw( TX_SET_APPROVED_ADDRS, username, table.concat( approved_addrs, "," ) )
return true
end
self.on_session_opened = function ( username )
data[ username ].total_sessions = data[ username ].total_sessions + 1
journal.record_raw( TX_SESSION_OPENED, username )
end
self.on_session_closed = function ( username )
data[ username ].lifetime = data[ username ].lifetime + ( journal.optime - data[ username ].newlogin )
users[ username ] = nil
journal.record_raw( TX_SESSION_CLOSED, username )
end
self.on_login_attempt = function ( username, ip )
data[ username ].total_attempts = data[ username ].total_attempts + 1
journal.record_raw( TX_LOGIN_ATTEMPT, username, ip )
end
self.on_login_failure = function ( username, ip )
data[ username ].total_failures = data[ username ].total_failures + 1
journal.record_raw( TX_LOGIN_FAILURE, username, ip )
end
self.on_login_success = function ( username, ip )
if data[ username ].oldlogin == -1 then
data[ username ].oldlogin = journal.optime
end
users[ username ] = data[ username ].newlogin
data[ username ].newlogin = journal.optime
journal.record_raw( TX_LOGIN_SUCCESS, username, ip )
end
self.records = function ( )
return pairs( data )
end
return self
end
local auth_db = AuthDatabase( minetest.get_worldpath( ), "auth.db" )
local function get_default_privs( )
local default_privs = { }
for _, p in pairs( string.split( minetest.settings:get( "default_privs" ), "," ) ) do
table.insert( default_privs, string.trim( p ) )
end
return default_privs
end
local function unpack_privileges( assigned_privs )
local privileges = { }
for _, p in ipairs( assigned_privs ) do
privileges[ p ] = true
end
return privileges
end
local function pack_privileges( privileges )
local assigned_privs = { }
for p, _ in pairs( privileges ) do
table.insert( assigned_privs, p )
end
return assigned_privs
end
minetest.register_on_authplayer( function ( player_name, player_ip, is_success )
if is_success then
auth_db.on_login_success( player_name, player_ip )
else
auth_db.on_login_failure( player_name, player_ip )
end
end )
minetest.register_on_prejoinplayer( function ( player_name, player_ip )
local rec = auth_db.select_record( player_name )
if rec then
auth_db.on_login_attempt( player_name, player_ip )
else
local uname = string.lower( player_name )
for cname in auth_db.records( ) do
if string.lower( cname ) == uname then
return string.format( "A player named %s already exists on this server.", cname )
end
end
end
end )
minetest.register_on_joinplayer( function ( player, last_login )
auth_db.on_session_opened( player:get_player_name( ) )
end )
minetest.register_on_leaveplayer( function ( player )
auth_db.on_session_closed( player:get_player_name( ) )
end )
minetest.register_on_shutdown( function( )
auth_db.disconnect( )
end )
minetest.register_authentication_handler( {
get_auth = function( username )
local rec = auth_db.select_record( username )
if not rec then return end
local assigned_privs = rec.assigned_privs
if minetest.settings:get( "name" ) == username then
assigned_privs = { }
for priv in pairs( core.registered_privileges ) do
table.insert( assigned_privs, priv )
end
end
return { password = rec.password, privileges = unpack_privileges( assigned_privs ), last_login = rec.newlogin }
end,
create_auth = function( username, password )
if auth_db.create_record( username, password ) then
auth_db.set_assigned_privs( username, get_default_privs( ) )
end
end,
delete_auth = function( username )
auth_db.delete_record( username )
end,
set_password = function ( username, password )
return auth_db.set_password( username, password )
end,
set_privileges = function ( username, privileges )
if minetest.settings:get( "name" ) == username then return end
if auth_db.set_assigned_privs( username, pack_privileges( privileges ) ) then
minetest.notify_authentication_modified( username )
end
end,
record_login = function ( ) end,
reload = function ( ) end,
iterate = auth_db.records
} )
auth_db.connect( )
|
Comments (0)
You can clone a snippet to your computer for local editing. Learn more.