man/cupsd.conf.man.in

   1 .\"
   2 .\" cupsd.conf man page for CUPS.
   3 .\"
   4 .\" Copyright © 2007-2018 by Apple Inc.
   5 .\" Copyright © 1997-2006 by Easy Software Products.
   6 .\"
   7 .\" Licensed under Apache License v2.0.  See the file "LICENSE" for more
   8 .\" information.
   9 .\"
  10 .TH cupsd.conf 5 "CUPS" "8 November 2018" "Apple Inc."
  11 .SH NAME
  12 cupsd.conf \- server configuration file for cups
  13 .SH DESCRIPTION
  14 The
  15 .I cupsd.conf
  16 file configures the CUPS scheduler,
  17 .BR cupsd (8).
  18 It is normally located in the
  19 .I /etc/cups
  20 directory.
  21 Each line in the file can be a configuration directive, a blank line, or a comment.
  22 Configuration directives typically consist of a name and zero or more values separated by whitespace.
  23 The configuration directive name and values are case-insensitive.
  24 Comment lines start with the # character.
  25 .SS TOP-LEVEL DIRECTIVES
  26 The following top-level directives are understood by
  27 .BR cupsd (8):
  28 .\"#AccessLogLevel
  29 .TP 5
  30 \fBAccessLogLevel config\fR
  31 .TP 5
  32 \fBAccessLogLevel actions\fR
  33 .TP 5
  34 \fBAccessLogLevel all\fR
  35 Specifies the logging level for the AccessLog file.
  36 The "config" level logs when printers and classes are added, deleted, or modified and when configuration files are accessed or updated.
  37 The "actions" level logs when print jobs are submitted, held, released, modified, or canceled, and any of the conditions for "config".
  38 The "all" level logs all requests.
  39 The default access log level is "actions".
  40 .\"#AutoPurgeJobs
  41 .TP 5
  42 \fBAutoPurgeJobs Yes\fR
  43 .TP 5
  44 \fBAutoPurgeJobs No\fR
  45 .br
  46 Specifies whether to purge job history data automatically when it is no longer required for quotas.
  47 The default is "No".
  48 .\"#BrowseDNSSDSubTypes
  49 .TP 5
  50 .BI BrowseDNSSDSubTypes _subtype[,...]
  51 Specifies a list of Bonjour sub-types to advertise for each shared printer.
  52 For example, "BrowseDNSSDSubTypes _cups,_print" will tell network clients that both CUPS sharing and IPP Everywhere are supported.
  53 The default is "_cups" which is necessary for printer sharing to work between systems using CUPS.
  54 .\"#BrowseLocalProtocols
  55 .TP 5
  56 \fBBrowseLocalProtocols all\fR
  57 .TP 5
  58 \fBBrowseLocalProtocols dnssd\fR
  59 .TP 5
  60 \fBBrowseLocalProtocols none\fR
  61 Specifies which protocols to use for local printer sharing.
  62 The default is "dnssd" on systems that support Bonjour and "none" otherwise.
  63 .\"#BrowseWebIF
  64 .TP 5
  65 \fBBrowseWebIF Yes\fR
  66 .TP 5
  67 \fBBrowseWebIF No\fR
  68 .br
  69 Specifies whether the CUPS web interface is advertised.
  70 The default is "No".
  71 .\"#Browsing
  72 .TP 5
  73 \fBBrowsing Yes\fR
  74 .TP 5
  75 \fBBrowsing No\fR
  76 .br
  77 Specifies whether shared printers are advertised.
  78 The default is "No".
  79 .\"#DefaultAuthType
  80 .TP 5
  81 \fBDefaultAuthType Basic\fR
  82 .TP 5
  83 \fBDefaultAuthType Negotiate\fR
  84 .br
  85 Specifies the default type of authentication to use.
  86 The default is "Basic".
  87 .\"#DefaultEncryption
  88 .TP 5
  89 \fBDefaultEncryption Never\fR
  90 .TP 5
  91 \fBDefaultEncryption IfRequested\fR
  92 .TP 5
  93 \fBDefaultEncryption Required\fR
  94 Specifies whether encryption will be used for authenticated requests.
  95 The default is "Required".
  96 .\"#DefaultLanguage
  97 .TP 5
  98 \fBDefaultLanguage \fIlocale\fR
  99 Specifies the default language to use for text and web content.
 100 The default is "en".
 101 .\"#DefaultPaperSize
 102 .TP 5
 103 \fBDefaultPaperSize Auto\fR
 104 .TP 5
 105 \fBDefaultPaperSize None\fR
 106 .TP 5
 107 \fBDefaultPaperSize \fIsizename\fR
 108 Specifies the default paper size for new print queues. "Auto" uses a locale-specific default, while "None" specifies there is no default paper size.
 109 Specific size names are typically "Letter" or "A4".
 110 The default is "Auto".
 111 .\"#DefaultPolicy
 112 .TP 5
 113 \fBDefaultPolicy \fIpolicy-name\fR
 114 Specifies the default access policy to use.
 115 The default access policy is "default".
 116 .\"#DefaultShared
 117 .TP 5
 118 \fBDefaultShared Yes\fR
 119 .TP 5
 120 \fBDefaultShared No\fR
 121 Specifies whether local printers are shared by default.
 122 The default is "Yes".
 123 .\"#DirtyCleanInterval
 124 .TP 5
 125 \fBDirtyCleanInterval \fIseconds\fR
 126 Specifies the delay for updating of configuration and state files.
 127 A value of 0 causes the update to happen as soon as possible, typically within a few milliseconds.
 128 The default value is "30".
 129 .\"#DNSSDHostName
 130 .TP 5
 131 .BI DNSSDHostName hostname.example.com
 132 Specifies the fully-qualified domain name for the server that is used for Bonjour sharing.
 133 The default is typically the server's ".local" hostname.
 134 .\"#ErrorPolicy
 135 .TP 5
 136 \fBErrorPolicy abort-job\fR
 137 Specifies that a failed print job should be aborted (discarded) unless otherwise specified for the printer.
 138 .TP 5
 139 \fBErrorPolicy retry-current-job\fR
 140 Specifies that a failed print job should be retried immediately unless otherwise specified for the printer.
 141 .TP 5
 142 \fBErrorPolicy retry-job\fR
 143 Specifies that a failed print job should be retried at a later time unless otherwise specified for the printer.
 144 .TP 5
 145 \fBErrorPolicy stop-printer\fR
 146 Specifies that a failed print job should stop the printer unless otherwise specified for the printer. The 'stop-printer' error policy is the default.
 147 .\"#FilterLimit
 148 .TP 5
 149 \fBFilterLimit \fIlimit\fR
 150 Specifies the maximum cost of filters that are run concurrently, which can be used to minimize disk, memory, and CPU resource problems.
 151 A limit of 0 disables filter limiting.
 152 An average print to a non-PostScript printer needs a filter limit of about 200.
 153 A PostScript printer needs about half that (100).
 154 Setting the limit below these thresholds will effectively limit the scheduler to printing a single job at any time.
 155 The default limit is "0".
 156 .\"#FilterNice
 157 .TP 5
 158 \fBFilterNice \fInice-value\fR
 159 Specifies the scheduling priority (
 160 .BR nice (8)
 161 value) of filters that are run to print a job.
 162 The nice value ranges from 0, the highest priority, to 19, the lowest priority.
 163 The default is 0.
 164 .\"#GSSServiceName
 165 .TP 5
 166 \fBGSSServiceName \fIname\fR
 167 Specifies the service name when using Kerberos authentication.
 168 The default service name is "http."
 169 .TP 5
 170 .\"#HostNameLookups
 171 \fBHostNameLookups On\fR
 172 .TP 5
 173 \fBHostNameLookups Off\fR
 174 .TP 5
 175 \fBHostNameLookups Double\fR
 176 Specifies whether to do reverse lookups on connecting clients.
 177 The "Double" setting causes
 178 .BR cupsd (8)
 179 to verify that the hostname resolved from the address matches one of the addresses returned for that hostname.
 180 Double lookups also prevent clients with unregistered addresses from connecting to your server.
 181 The default is "Off" to avoid the potential server performance problems with hostname lookups.
 182 Only set this option to "On" or "Double" if absolutely required.
 183 .\"#IdleExitTimeout
 184 .TP 5
 185 \fBIdleExitTimeout \fIseconds\fR
 186 Specifies the length of time to wait before shutting down due to inactivity.
 187 The default is "60" seconds.
 188 Note: Only applicable when
 189 .BR cupsd (8)
 190 is run on-demand (e.g., with \fB-l\fR).
 191 .\"#JobKillDelay
 192 .TP 5
 193 \fBJobKillDelay \fIseconds\fR
 194 Specifies the number of seconds to wait before killing the filters and backend associated with a canceled or held job.
 195 The default is "30".
 196 .\"#JobRetryInterval
 197 .TP 5
 198 \fBJobRetryInterval \fIseconds\fR
 199 Specifies the interval between retries of jobs in seconds.
 200 This is typically used for fax queues but can also be used with normal print queues whose error policy is "retry-job" or "retry-current-job".
 201 The default is "30".
 202 .\"#JobRetryLimit
 203 .TP 5
 204 \fBJobRetryLimit \fIcount\fR
 205 Specifies the number of retries that are done for jobs.
 206 This is typically used for fax queues but can also be used with normal print queues whose error policy is "retry-job" or "retry-current-job".
 207 The default is "5".
 208 .\"#KeepAlive
 209 .TP 5
 210 \fBKeepAlive Yes\fR
 211 .TP 5
 212 \fBKeepAlive No\fR
 213 Specifies whether to support HTTP keep-alive connections.
 214 The default is "Yes".
 215 .\"#KeepAliveTimeout
 216 .TP 5
 217 \fBKeepAliveTimeout \fIseconds\fR
 218 Specifies how long an idle client connection remains open.
 219 The default is "30".
 220 .\"#LimitIPP
 221 .TP 5
 222 \fB<Limit \fIoperation \fR...\fB> \fR... \fB</Limit>\fR
 223 Specifies the IPP operations that are being limited inside a Policy section. IPP operation names are listed below in the section "IPP OPERATION NAMES".
 224 .\"#Limit
 225 .TP 5
 226 \fB<Limit \fImethod \fR...\fB> \fR... \fB</Limit>\fR
 227 .\"#LimitExcept
 228 .TP 5
 229 \fB<LimitExcept \fImethod \fR...\fB> \fR... \fB</LimitExcept>\fR
 230 Specifies the HTTP methods that are being limited inside a Location section. HTTP method names are listed below in the section "HTTP METHOD NAMES".
 231 .\"#LimitRequestBody
 232 .TP 5
 233 \fBLimitRequestBody \fIsize\fR
 234 Specifies the maximum size of print files, IPP requests, and HTML form data.
 235 The default is "0" which disables the limit check.
 236 .\"#Listen
 237 .TP 5
 238 \fBListen \fIipv4-address\fB:\fIport\fR
 239 .TP 5
 240 \fBListen [\fIipv6-address\fB]:\fIport\fR
 241 .TP 5
 242 \fBListen *:\fIport\fR
 243 .TP 5
 244 \fBListen \fI/path/to/domain/socket\fR
 245 Listens to the specified address and port or domain socket path for connections.
 246 Multiple Listen directives can be provided to listen on multiple addresses.
 247 The Listen directive is similar to the Port directive but allows you to restrict access to specific interfaces or networks.
 248 .\"#ListenBackLog
 249 .TP 5
 250 \fBListenBackLog \fInumber\fR
 251 Specifies the number of pending connections that will be allowed.
 252 This normally only affects very busy servers that have reached the MaxClients limit, but can also be triggered by large numbers of simultaneous connections.
 253 When the limit is reached, the operating system will refuse additional connections until the scheduler can accept the pending ones.
 254 The default is the OS-defined default limit, typically either "5" for older operating systems or "128" for newer operating systems.
 255 .\"#Location
 256 .TP 5
 257 \fB<Location \fI/path\fB> \fR... \fB</Location>\fR
 258 Specifies access control for the named location.
 259 Paths are documented below in the section "LOCATION PATHS".
 260 .\"#LogDebugHistory
 261 .TP 5
 262 \fBLogDebugHistory \fInumber\fR
 263 Specifies the number of debugging messages that are retained for logging if an error occurs in a print job. Debug messages are logged regardless of the LogLevel setting.
 264 .\"#LogLevel
 265 .TP 5
 266 \fBLogLevel \fRnone
 267 .TP 5
 268 \fBLogLevel \fRemerg
 269 .TP 5
 270 \fBLogLevel \fRalert
 271 .TP 5
 272 \fBLogLevel \fRcrit
 273 .TP 5
 274 \fBLogLevel \fRerror
 275 .TP 5
 276 \fBLogLevel \fRwarn
 277 .TP 5
 278 \fBLogLevel \fRnotice
 279 .TP 5
 280 \fBLogLevel \fRinfo
 281 .TP 5
 282 \fBLogLevel \fRdebug
 283 .TP 5
 284 \fBLogLevel \fRdebug2
 285 Specifies the level of logging for the ErrorLog file.
 286 The value "none" stops all logging while "debug2" logs everything.
 287 The default is "warn".
 288 .\"#LogTimeFormat
 289 .TP 5
 290 \fBLogTimeFormat \fRstandard
 291 .TP 5
 292 \fBLogTimeFormat \fRusecs
 293 Specifies the format of the date and time in the log files.
 294 The value "standard" is the default and logs whole seconds while "usecs" logs microseconds.
 295 .\"#MaxClients
 296 .TP 5
 297 \fBMaxClients \fInumber\fR
 298 Specifies the maximum number of simultaneous clients that are allowed by the scheduler.
 299 The default is "100".
 300 .\"#MaxClientPerHost
 301 .TP 5
 302 \fBMaxClientsPerHost \fInumber\fR
 303 Specifies the maximum number of simultaneous clients that are allowed from a
 304 single address.
 305 The default is the MaxClients value.
 306 .\"#MaxCopies
 307 .TP 5
 308 \fBMaxCopies \fInumber\fR
 309 Specifies the maximum number of copies that a user can print of each job.
 310 The default is "9999".
 311 .\"#MaxHoldTime
 312 .TP 5
 313 \fBMaxHoldTime \fIseconds\fR
 314 Specifies the maximum time a job may remain in the "indefinite" hold state before it is canceled.
 315 The default is "0" which disables cancellation of held jobs.
 316 .\"#MaxJobs
 317 .TP 5
 318 \fBMaxJobs \fInumber\fR
 319 Specifies the maximum number of simultaneous jobs that are allowed.
 320 Set to "0" to allow an unlimited number of jobs.
 321 The default is "500".
 322 .\"#MaxJobsPerPrinter
 323 .TP 5
 324 \fBMaxJobsPerPrinter \fInumber\fR
 325 Specifies the maximum number of simultaneous jobs that are allowed per printer.
 326 The default is "0" which allows up to MaxJobs jobs per printer.
 327 .\"#MaxJobsPerUser
 328 .TP 5
 329 \fBMaxJobsPerUser \fInumber\fR
 330 Specifies the maximum number of simultaneous jobs that are allowed per user.
 331 The default is "0" which allows up to MaxJobs jobs per user.
 332 .\"#MaxJobTime
 333 .TP 5
 334 \fBMaxJobTime \fIseconds\fR
 335 Specifies the maximum time a job may take to print before it is canceled.
 336 Set to "0" to disable cancellation of "stuck" jobs.
 337 The default is "10800" (3 hours).
 338 .\"#MaxLogSize
 339 .TP 5
 340 \fBMaxLogSize \fIsize\fR
 341 Specifies the maximum size of the log files before they are rotated.
 342 The value "0" disables log rotation.
 343 The default is "1048576" (1MB).
 344 .\"#MultipleOperationTimeout
 345 .TP 5
 346 \fBMultipleOperationTimeout \fIseconds\fR
 347 Specifies the maximum amount of time to allow between files in a multiple file print job.
 348 The default is "300" (5 minutes).
 349 .\"#Policy
 350 .TP 5
 351 \fB<Policy \fIname\fB> \fR... \fB</Policy>\fR
 352 Specifies access control for the named policy.
 353 .\"#Port
 354 .TP 5
 355 \fBPort \fInumber\fR
 356 Listens to the specified port number for connections.
 357 .\"#PreserveJobFiles
 358 .TP 5
 359 \fBPreserveJobFiles Yes\fR
 360 .TP 5
 361 \fBPreserveJobFiles No\fR
 362 .TP 5
 363 \fBPreserveJobFiles \fIseconds\fR
 364 Specifies whether job files (documents) are preserved after a job is printed.
 365 If a numeric value is specified, job files are preserved for the indicated number of seconds after printing.
 366 The default is "86400" (preserve 1 day).
 367 .\"#PreserveJobHistory
 368 .TP 5
 369 \fBPreserveJobHistory Yes\fR
 370 .TP 5
 371 \fBPreserveJobHistory No\fR
 372 .TP 5
 373 \fBPreserveJobHistory \fIseconds\fR
 374 Specifies whether the job history is preserved after a job is printed.
 375 If a numeric value is specified, the job history is preserved for the indicated number of seconds after printing.
 376 If "Yes", the job history is preserved until the MaxJobs limit is reached.
 377 The default is "Yes".
 378 .\"#ReloadTimeout
 379 .TP 5
 380 \fBReloadTimeout \fIseconds\fR
 381 Specifies the amount of time to wait for job completion before restarting the scheduler.
 382 The default is "30".
 383 .\"#ServerAdmin
 384 .TP 5
 385 \fBServerAdmin \fIemail-address\fR
 386 Specifies the email address of the server administrator.
 387 The default value is "root@ServerName".
 388 .\"#ServerAlias
 389 .TP 5
 390 \fBServerAlias \fIhostname \fR[ ... \fIhostname \fR]
 391 .TP 5
 392 \fBServerAlias *\fR
 393 The ServerAlias directive is used for HTTP Host header validation when clients connect to the scheduler from external interfaces.
 394 Using the special name "*" can expose your system to known browser-based DNS rebinding attacks, even when accessing sites through a firewall.
 395 If the auto-discovery of alternate names does not work, we recommend listing each alternate name with a ServerAlias directive instead of using "*".
 396 .\"#ServerName
 397 .TP 5
 398 \fBServerName \fIhostname\fR
 399 Specifies the fully-qualified hostname of the server.
 400 The default is the value reported by the
 401 .BR hostname (1)
 402 command.
 403 .\"#ServerTokens
 404 .TP 5
 405 \fBServerTokens None\fR
 406 .TP 5
 407 \fBServerTokens ProductOnly\fR
 408 .TP 5
 409 \fBServerTokens Major\fR
 410 .TP 5
 411 \fBServerTokens Minor\fR
 412 .TP 5
 413 \fBServerTokens Minimal\fR
 414 .TP 5
 415 \fBServerTokens OS\fR
 416 .TP 5
 417 \fBServerTokens Full\fR
 418 Specifies what information is included in the Server header of HTTP responses.
 419 "None" disables the Server header.
 420 "ProductOnly" reports "CUPS".
 421 "Major" reports "CUPS 2".
 422 "Minor" reports "CUPS 2.0".
 423 "Minimal" reports "CUPS 2.0.0".
 424 "OS" reports "CUPS 2.0.0 (UNAME)" where UNAME is the output of the
 425 .BR uname (1)
 426 command.
 427 "Full" reports "CUPS 2.0.0 (UNAME) IPP/2.0".
 428 The default is "Minimal".
 429 .\"#SSLListen
 430 .TP 5
 431 \fBSSLListen \fIipv4-address\fB:\fIport\fR
 432 .TP 5
 433 \fBSSLListen [\fIipv6-address\fB]:\fIport\fR
 434 .TP 5
 435 \fBSSLListen *:\fIport\fR
 436 Listens on the specified address and port for encrypted connections.
 437 .\"#SSLOptions
 438 .TP 5
 439 .TP 5
 440 \fBSSLOptions \fR[\fIAllowDH\fR] [\fIAllowRC4\fR] [\fIAllowSSL3\fR] [\fIDenyCBC\fR] [\fIDenyTLS1.0\fR] [\fIMaxTLS1.0\fR] [\fIMaxTLS1.1\fR] [\fIMaxTLS1.2\fR] [\fIMaxTLS1.3\fR] [\fIMinTLS1.0\fR] [\fIMinTLS1.1\fR] [\fIMinTLS1.2\fR] [\fIMinTLS1.3\fR]
 441 .TP 5
 442 \fBSSLOptions None\fR
 443 Sets encryption options (only in /etc/cups/client.conf).
 444 By default, CUPS only supports encryption using TLS v1.0 or higher using known secure cipher suites.
 445 Security is reduced when \fIAllow\fR options are used.
 446 Security is enhanced when \fIDeny\fR options are used.
 447 The \fIAllowDH\fR option enables cipher suites using plain Diffie-Hellman key negotiation (not supported on systems using GNU TLS).
 448 The \fIAllowRC4\fR option enables the 128-bit RC4 cipher suites, which are required for some older clients.
 449 The \fIAllowSSL3\fR option enables SSL v3.0, which is required for some older clients that do not support TLS v1.0.
 450 The \fIDenyCBC\fR option disables all CBC cipher suites.
 451 The \fIDenyTLS1.0\fR option disables TLS v1.0 support - this sets the minimum protocol version to TLS v1.1.
 452 The \fIMinTLS\fR options set the minimum TLS version to support.
 453 The \fIMaxTLS\fR options set the maximum TLS version to support.
 454 Not all operating systems support TLS 1.3 at this time.
 455 .\"#SSLPort
 456 .TP 5
 457 \fBSSLPort \fIport\fR
 458 Listens on the specified port for encrypted connections.
 459 .\"#StrictConformance
 460 .TP 5
 461 \fBStrictConformance Yes\fR
 462 .TP 5
 463 \fBStrictConformance No\fR
 464 Specifies whether the scheduler requires clients to strictly adhere to the IPP specifications.
 465 The default is "No".
 466 .\"#Timeout
 467 .TP 5
 468 \fBTimeout \fIseconds\fR
 469 Specifies the HTTP request timeout.
 470 The default is "300" (5 minutes).
 471 .\"#WebInterface
 472 .TP 5
 473 \fBWebInterface yes\fR
 474 .TP 5
 475 \fBWebInterface no\fR
 476 Specifies whether the web interface is enabled.
 477 The default is "No".
 478 .SS HTTP METHOD NAMES
 479 The following HTTP methods are supported by
 480 .BR cupsd (8):
 481 .TP 5
 482 GET
 483 Used by a client to download icons and other printer resources and to access the CUPS web interface.
 484 .TP 5
 485 HEAD
 486 Used by a client to get the type, size, and modification date of resources.
 487 .TP 5
 488 OPTIONS
 489 Used by a client to establish a secure (SSL/TLS) connection.
 490 .TP 5
 491 POST
 492 Used by a client to submit IPP requests and HTML forms from the CUPS web interface.
 493 .TP 5
 494 PUT
 495 Used by a client to upload configuration files.
 496 .SS IPP OPERATION NAMES
 497 The following IPP operations are supported by
 498 .BR cupsd (8):
 499 .TP 5
 500 CUPS\-Accept\-Jobs
 501 Allows a printer to accept new jobs.
 502 .TP 5
 503 CUPS\-Add\-Modify\-Class
 504 Adds or modifies a printer class.
 505 .TP 5
 506 CUPS\-Add\-Modify\-Printer
 507 Adds or modifies a printer.
 508 .TP 5
 509 CUPS\-Authenticate\-Job
 510 Releases a job that is held for authentication.
 511 .TP 5
 512 CUPS\-Delete\-Class
 513 Deletes a printer class.
 514 .TP 5
 515 CUPS\-Delete\-Printer
 516 Deletes a printer.
 517 .TP 5
 518 CUPS\-Get\-Classes
 519 Gets a list of printer classes.
 520 .TP 5
 521 CUPS\-Get\-Default
 522 Gets the server default printer or printer class.
 523 .TP 5
 524 CUPS\-Get\-Devices
 525 Gets a list of devices that are currently available.
 526 .TP 5
 527 CUPS\-Get\-Document
 528 Gets a document file for a job.
 529 .TP 5
 530 CUPS\-Get\-PPD
 531 Gets a PPD file.
 532 .TP 5
 533 CUPS\-Get\-PPDs
 534 Gets a list of installed PPD files.
 535 .TP 5
 536 CUPS\-Get\-Printers
 537 Gets a list of printers.
 538 .TP 5
 539 CUPS\-Move\-Job
 540 Moves a job.
 541 .TP 5
 542 CUPS\-Reject\-Jobs
 543 Prevents a printer from accepting new jobs.
 544 .TP 5
 545 CUPS\-Set\-Default
 546 Sets the server default printer or printer class.
 547 .TP 5
 548 Cancel\-Job
 549 Cancels a job.
 550 .TP 5
 551 Cancel\-Jobs
 552 Cancels one or more jobs.
 553 .TP 5
 554 Cancel\-My\-Jobs
 555 Cancels one or more jobs creates by a user.
 556 .TP 5
 557 Cancel\-Subscription
 558 Cancels a subscription.
 559 .TP 5
 560 Close\-Job
 561 Closes a job that is waiting for more documents.
 562 .TP 5
 563 Create\-Job
 564 Creates a new job with no documents.
 565 .TP 5
 566 Create\-Job\-Subscriptions
 567 Creates a subscription for job events.
 568 .TP 5
 569 Create\-Printer\-Subscriptions
 570 Creates a subscription for printer events.
 571 .TP 5
 572 Get\-Job\-Attributes
 573 Gets information about a job.
 574 .TP 5
 575 Get\-Jobs
 576 Gets a list of jobs.
 577 .TP 5
 578 Get\-Notifications
 579 Gets a list of event notifications for a subscription.
 580 .TP 5
 581 Get\-Printer\-Attributes
 582 Gets information about a printer or printer class.
 583 .TP 5
 584 Get\-Subscription\-Attributes
 585 Gets information about a subscription.
 586 .TP 5
 587 Get\-Subscriptions
 588 Gets a list of subscriptions.
 589 .TP 5
 590 Hold\-Job
 591 Holds a job from printing.
 592 .TP 5
 593 Hold\-New\-Jobs
 594 Holds all new jobs from printing.
 595 .TP 5
 596 Pause\-Printer
 597 Stops processing of jobs by a printer or printer class.
 598 .TP 5
 599 Pause\-Printer\-After\-Current\-Job
 600 Stops processing of jobs by a printer or printer class after the current job is finished.
 601 .TP 5
 602 Print\-Job
 603 Creates a new job with a single document.
 604 .TP 5
 605 Purge\-Jobs
 606 Cancels one or more jobs and deletes the job history.
 607 .TP 5
 608 Release\-Held\-New\-Jobs
 609 Allows previously held jobs to print.
 610 .TP 5
 611 Release\-Job
 612 Allows a job to print.
 613 .TP 5
 614 Renew\-Subscription
 615 Renews a subscription.
 616 .TP 5
 617 Restart\-Job
 618 Reprints a job, if possible.
 619 .TP 5
 620 Send\-Document
 621 Adds a document to a job.
 622 .TP 5
 623 Set\-Job\-Attributes
 624 Changes job information.
 625 .TP 5
 626 Set\-Printer\-Attributes
 627 Changes printer or printer class information.
 628 .TP 5
 629 Validate\-Job
 630 Validates options for a new job.
 631 .SS LOCATION PATHS
 632 The following paths are commonly used when configuring
 633 .BR cupsd (8):
 634 .TP 5
 635 /
 636 The path for all get operations (get-printers, get-jobs, etc.)
 637 .TP 5
 638 /admin
 639 The path for all administration operations (add-printer, delete-printer, start-printer, etc.)
 640 .TP 5
 641 /admin/conf
 642 The path for access to the CUPS configuration files (cupsd.conf, client.conf, etc.)
 643 .TP 5
 644 /admin/log
 645 The path for access to the CUPS log files (access_log, error_log, page_log)
 646 .TP 5
 647 /classes
 648 The path for all printer classes
 649 .TP 5
 650 /classes/name
 651 The resource for the named printer class
 652 .TP 5
 653 /jobs
 654 The path for all jobs (hold-job, release-job, etc.)
 655 .TP 5
 656 /jobs/id
 657 The path for the specified job
 658 .TP 5
 659 /printers
 660 The path for all printers
 661 .TP 5
 662 /printers/name
 663 The path for the named printer
 664 .TP 5
 665 /printers/name.png
 666 The icon file path for the named printer
 667 .TP 5
 668 /printers/name.ppd
 669 The PPD file path for the named printer
 670 .SS DIRECTIVES VALID WITHIN LOCATION AND LIMIT SECTIONS
 671 The following directives may be placed inside Location and Limit sections in the \fBcupsd.conf\fR file:
 672 .TP 5
 673 \fBAllow all\fR
 674 .TP 5
 675 \fBAllow none\fR
 676 .TP 5
 677 \fBAllow \fIhost.domain.com\fR
 678 .TP 5
 679 \fBAllow *.\fIdomain.com\fR
 680 .TP 5
 681 \fBAllow \fIipv4-address\fR
 682 .TP 5
 683 \fBAllow \fIipv4-address\fB/\fInetmask\fR
 684 .TP 5
 685 \fBAllow \fIipv4-address\fB/\fImm\fR
 686 .TP 5
 687 \fBAllow [\fIipv6-address\fB]\fR
 688 .TP 5
 689 \fBAllow [\fIipv6-address\fB]/\fImm\fR
 690 .TP 5
 691 \fBAllow @IF(\fIname\fB)\fR
 692 .TP 5
 693 \fBAllow @LOCAL\fR
 694 Allows access from the named hosts, domains, addresses, or interfaces.
 695 The Order directive controls whether Allow lines are evaluated before or after Deny lines.
 696 .TP 5
 697 \fBAuthType None\fR
 698 .TP 5
 699 \fBAuthType Basic\fR
 700 .TP 5
 701 \fBAuthType Default\fR
 702 .TP 5
 703 \fBAuthType Negotiate\fR
 704 Specifies the type of authentication required.
 705 The value "Default" corresponds to the DefaultAuthType value.
 706 .TP 5
 707 \fBDeny all\fR
 708 .TP 5
 709 \fBDeny none\fR
 710 .TP 5
 711 \fBDeny \fIhost.domain.com\fR
 712 .TP 5
 713 \fBDeny *.\fIdomain.com\fR
 714 .TP 5
 715 \fBDeny \fIipv4-address\fR
 716 .TP 5
 717 \fBDeny \fIipv4-address\fB/\fInetmask\fR
 718 .TP 5
 719 \fBDeny \fIipv4-address\fB/\fImm\fR
 720 .TP 5
 721 \fBDeny [\fIipv6-address\fB]\fR
 722 .TP 5
 723 \fBDeny [\fIipv6-address\fB]/\fImm\fR
 724 .TP 5
 725 \fBDeny @IF(\fIname\fB)\fR
 726 .TP 5
 727 \fBDeny @LOCAL\fR
 728 Denies access from the named hosts, domains, addresses, or interfaces.
 729 The Order directive controls whether Deny lines are evaluated before or after Allow lines.
 730 .TP 5
 731 \fBEncryption IfRequested\fR
 732 .TP 5
 733 \fBEncryption Never\fR
 734 .TP 5
 735 \fBEncryption Required\fR
 736 Specifies the level of encryption that is required for a particular location.
 737 The default value is "IfRequested".
 738 .TP 5
 739 \fBOrder allow,deny\fR
 740 Specifies that access is denied by default. Allow lines are then processed followed by Deny lines to determine whether a client may access a particular resource.
 741 .TP 5
 742 \fBOrder deny,allow\fR
 743 Specifies that access is allowed by default. Deny lines are then processed followed by Allow lines to determine whether a client may access a particular resource.
 744 .TP 5
 745 \fBRequire group \fIgroup-name \fR[ \fIgroup-name \fR... ]
 746 Specifies that an authenticated user must be a member of one of the named groups.
 747 .TP 5
 748 \fBRequire user {\fIuser-name\fR|\fB@\fIgroup-name\fR} ...
 749 Specifies that an authenticated user must match one of the named users or be a member of one of the named groups.
 750 The group name "@SYSTEM" corresponds to the list of groups defined by the SystemGroup directive in the
 751 .BR cups-files.conf (5)
 752 file.
 753 The group name "@OWNER" corresponds to the owner of the resource, for example the person that submitted a print job.
 754 Note: The 'root' user is not special and must be granted privileges like any other user account.
 755 .TP 5
 756 \fBRequire valid-user\fR
 757 Specifies that any authenticated user is acceptable.
 758 .TP 5
 759 \fBSatisfy all\fR
 760 Specifies that all Allow, AuthType, Deny, Order, and Require conditions must be satisfied to allow access.
 761 .TP 5
 762 \fBSatisfy any\fR
 763 Specifies that any a client may access a resource if either the authentication (AuthType/Require) or address (Allow/Deny/Order) conditions are satisfied.
 764 For example, this can be used to require authentication only for remote accesses.
 765 .SS DIRECTIVES VALID WITHIN POLICY SECTIONS
 766 The following directives may be placed inside Policy sections in the \fBcupsd.conf\fR file:
 767 .TP 5
 768 \fBJobPrivateAccess all\fR
 769 .TP 5
 770 \fBJobPrivateAccess default\fR
 771 .TP 5
 772 \fBJobPrivateAccess \fR{\fIuser\fR|\fB@\fIgroup\fR|\fB@ACL\fR|\fB@OWNER\fR|\fB@SYSTEM\fR} ...
 773 Specifies an access list for a job's private values.
 774 The "default" access list is "@OWNER @SYSTEM".
 775 "@ACL" maps to the printer's requesting-user-name-allowed or requesting-user-name-denied values.
 776 "@OWNER" maps to the job's owner.
 777 "@SYSTEM" maps to the groups listed for the SystemGroup directive in the
 778 .BR cups-files.conf (5)
 779 file.
 780 .TP 5
 781 \fBJobPrivateValues all\fR
 782 .TP 5
 783 \fBJobPrivateValues default\fR
 784 .TP 5
 785 \fBJobPrivateValues none\fR
 786 .TP 5
 787 \fBJobPrivateValues \fIattribute-name \fR[ ... \fIattribute-name \fR]
 788 Specifies the list of job values to make private.
 789 The "default" values are "job-name", "job-originating-host-name", "job-originating-user-name", and "phone".
 790 .TP 5
 791 \fBSubscriptionPrivateAccess all\fR
 792 .TP 5
 793 \fBSubscriptionPrivateAccess default\fR
 794 .TP 5
 795 \fBSubscriptionPrivateAccess \fR{\fIuser\fR|\fB@\fIgroup\fR|\fB@ACL\fR|\fB@OWNER\fR|\fB@SYSTEM\fR} ...
 796 Specifies an access list for a subscription's private values.
 797 The "default" access list is "@OWNER @SYSTEM".
 798 "@ACL" maps to the printer's requesting-user-name-allowed or requesting-user-name-denied values.
 799 "@OWNER" maps to the job's owner.
 800 "@SYSTEM" maps to the groups listed for the SystemGroup directive in the
 801 .BR cups-files.conf (5)
 802 file.
 803 .TP 5
 804 \fBSubscriptionPrivateValues all\fR
 805 .TP 5
 806 \fBSubscriptionPrivateValues default\fR
 807 .TP 5
 808 \fBSubscriptionPrivateValues none\fR
 809 .TP 5
 810 \fBSubscriptionPrivateValues \fIattribute-name \fR[ ... \fIattribute-name \fR]
 811 Specifies the list of subscription values to make private.
 812 The "default" values are "notify-events", "notify-pull-method", "notify-recipient-uri", "notify-subscriber-user-name", and "notify-user-data".
 813 .SS DEPRECATED DIRECTIVES
 814 The following directives are deprecated and will be removed in a future release of CUPS:
 815 .\"#Classification
 816 .TP 5
 817 \fBClassification \fIbanner\fR
 818 .br
 819 Specifies the security classification of the server.
 820 Any valid banner name can be used, including "classified", "confidential", "secret", "topsecret", and "unclassified", or the banner can be omitted to disable secure printing functions.
 821 The default is no classification banner.
 822 .\"#ClassifyOverride
 823 .TP 5
 824 \fBClassifyOverride Yes\fR
 825 .TP 5
 826 \fBClassifyOverride No\fR
 827 .br
 828 Specifies whether users may override the classification (cover page) of individual print jobs using the "job-sheets" option.
 829 The default is "No".
 830 .\"#PageLogFormat
 831 .TP 5
 832 \fBPageLogFormat \fIformat-string\fR
 833 Specifies the format of PageLog lines.
 834 Sequences beginning with percent (%) characters are replaced with the corresponding information, while all other characters are copied literally.
 835 The following percent sequences are recognized:
 836 .nf
 837
 838     "%%" inserts a single percent character.
 839     "%{name}" inserts the value of the specified IPP attribute.
 840     "%C" inserts the number of copies for the current page.
 841     "%P" inserts the current page number.
 842     "%T" inserts the current date and time in common log format.
 843     "%j" inserts the job ID.
 844     "%p" inserts the printer name.
 845     "%u" inserts the username.
 846
 847 .fi
 848 The default is the empty string, which disables page logging.
 849 The string "%p %u %j %T %P %C %{job-billing} %{job-originating-host-name} %{job-name} %{media} %{sides}" creates a page log with the standard items.
 850 Use "%{job-impressions-completed}" to insert the number of pages (sides) that were printed, or "%{job-media-sheets-completed}" to insert the number of sheets that were printed.
 851 .\"#RIPCache
 852 .TP 5
 853 \fBRIPCache \fIsize\fR
 854 Specifies the maximum amount of memory to use when converting documents into bitmaps for a printer.
 855 The default is "128m".
 856 .SH NOTES
 857 File, directory, and user configuration directives that used to be allowed in the \fBcupsd.conf\fR file are now stored in the
 858 .BR cups-files.conf (5)
 859 file instead in order to prevent certain types of privilege escalation attacks.
 860 .PP
 861 The scheduler MUST be restarted manually after making changes to the \fBcupsd.conf\fR file.
 862 On Linux this is typically done using the
 863 .BR systemctl (8)
 864 command, while on macOS the
 865 .BR launchctl (8)
 866 command is used instead.
 867 .SH CONFORMING TO
 868 The \fBcupsd.conf\fR file format is based on the Apache HTTP Server configuration file format.
 869 .SH EXAMPLES
 870 Log everything with a maximum log file size of 32 megabytes:
 871 .nf
 872
 873     AccessLogLevel all
 874     LogLevel debug2
 875     MaxLogSize 32m
 876
 877 .fi
 878 Require authentication for accesses from outside the 10. network:
 879 .nf
 880
 881     <Location />
 882     Order allow,deny
 883     Allow from 10./8
 884     AuthType Basic
 885     Require valid-user
 886     Satisfy any
 887     </Location>
 888 .fi
 889 .SH SEE ALSO
 890 .BR classes.conf (5),
 891 .BR cups-files.conf (5),
 892 .BR cupsd (8),
 893 .BR mime.convs (5),
 894 .BR mime.types (5),
 895 .BR printers.conf (5),
 896 .BR subscriptions.conf (5),
 897 CUPS Online Help (http://localhost:631/help)
 898 .SH COPYRIGHT
 899 Copyright \[co] 2007-2018 by Apple Inc.