diff options
Diffstat (limited to 'nixos/modules/services/printing/cupsd.nix')
| -rw-r--r-- | nixos/modules/services/printing/cupsd.nix | 188 |
1 files changed, 109 insertions, 79 deletions
diff --git a/nixos/modules/services/printing/cupsd.nix b/nixos/modules/services/printing/cupsd.nix index 0fe25b66da0..98fb33e3256 100644 --- a/nixos/modules/services/printing/cupsd.nix +++ b/nixos/modules/services/printing/cupsd.nix @@ -4,10 +4,13 @@ with lib; let - inherit (pkgs) cups cups_filters; + inherit (pkgs) cups cups-pk-helper cups_filters gutenprint; cfg = config.services.printing; + avahiEnabled = config.services.avahi.enable; + polkitEnabled = config.security.polkit.enable; + additionalBackends = pkgs.runCommand "additional-cups-backends" { } '' mkdir -p $out @@ -30,12 +33,75 @@ let # cupsd.conf tells cupsd to use this tree. bindir = pkgs.buildEnv { name = "cups-progs"; - paths = cfg.drivers; - pathsToLink = [ "/lib/cups" "/share/cups" "/bin" "/etc/cups" ]; + paths = + [ cups additionalBackends cups_filters pkgs.ghostscript ] + ++ optional cfg.gutenprint gutenprint + ++ cfg.drivers; + pathsToLink = [ "/lib/cups" "/share/cups" "/bin" ]; postBuild = cfg.bindirCmds; ignoreCollisions = true; }; + writeConf = name: text: pkgs.writeTextFile { + inherit name text; + destination = "/etc/cups/${name}"; + }; + + cupsFilesFile = writeConf "cups-files.conf" '' + SystemGroup root wheel + + ServerBin ${bindir}/lib/cups + DataDir ${bindir}/share/cups + + AccessLog syslog + ErrorLog syslog + PageLog syslog + + TempDir ${cfg.tempDir} + + # User and group used to run external programs, including + # those that actually send the job to the printer. Note that + # Udev sets the group of printer devices to `lp', so we want + # these programs to run as `lp' as well. + User cups + Group lp + + ${cfg.extraFilesConf} + ''; + + cupsdFile = writeConf "cupsd.conf" '' + ${concatMapStrings (addr: '' + Listen ${addr} + '') cfg.listenAddresses} + Listen /var/run/cups/cups.sock + + SetEnv PATH ${bindir}/lib/cups/filter:${bindir}/bin + + DefaultShared ${if cfg.defaultShared then "Yes" else "No"} + + Browsing ${if cfg.browsing then "Yes" else "No"} + + WebInterface ${if cfg.webInterface then "Yes" else "No"} + + ${cfg.extraConf} + ''; + + browsedFile = writeConf "cups-browsed.conf" cfg.browsedConf; + + rootdir = pkgs.buildEnv { + name = "cups-progs"; + paths = [ + cupsFilesFile + cupsdFile + (writeConf "client.conf" cfg.clientConf) + (writeConf "snmp.conf" cfg.snmpConf) + ] ++ optional avahiEnabled browsedFile + ++ optional cfg.gutenprint gutenprint + ++ cfg.drivers; + pathsToLink = [ "/etc/cups" ]; + ignoreCollisions = true; + }; + in { @@ -96,25 +162,11 @@ in ''; }; - cupsdConf = mkOption { - type = types.lines; - default = ""; - example = - '' - BrowsePoll cups.example.com - LogLevel debug - ''; - description = '' - The contents of the configuration file of the CUPS daemon - (<filename>cupsd.conf</filename>). - ''; - }; - - cupsFilesConf = mkOption { + extraFilesConf = mkOption { type = types.lines; default = ""; description = '' - The contents of the configuration file of the CUPS daemon + Extra contents of the configuration file of the CUPS daemon (<filename>cups-files.conf</filename>). ''; }; @@ -171,8 +223,18 @@ in ''; }; + gutenprint = mkOption { + type = types.bool; + default = false; + description = '' + Whether to enable Gutenprint drivers for CUPS. This includes auto-updating + Gutenprint PPD files. + ''; + }; + drivers = mkOption { type = types.listOf types.path; + default = []; example = literalExample "[ pkgs.splix ]"; description = '' CUPS drivers to use. Drivers provided by CUPS, cups-filters, Ghostscript @@ -204,15 +266,10 @@ in description = "CUPS printing services"; }; - environment.systemPackages = [ cups ]; + environment.systemPackages = [ cups ] ++ optional polkitEnabled cups-pk-helper; + environment.etc."cups".source = "/var/lib/cups"; - environment.etc."cups/client.conf".text = cfg.clientConf; - environment.etc."cups/cups-files.conf".text = cfg.cupsFilesConf; - environment.etc."cups/cupsd.conf".text = cfg.cupsdConf; - environment.etc."cups/cups-browsed.conf".text = cfg.browsedConf; - environment.etc."cups/snmp.conf".text = cfg.snmpConf; - - services.dbus.packages = [ cups ]; + services.dbus.packages = [ cups ] ++ optional polkitEnabled cups-pk-helper; # Cups uses libusb to talk to printers, and does not use the # linux kernel driver. If the driver is not in a black list, it @@ -230,19 +287,35 @@ in preStart = '' - mkdir -m 0755 -p /etc/cups mkdir -m 0700 -p /var/cache/cups mkdir -m 0700 -p /var/spool/cups mkdir -m 0755 -p ${cfg.tempDir} - ''; - restartTriggers = - [ config.environment.etc."cups/cups-files.conf".source - config.environment.etc."cups/cupsd.conf".source - ]; + mkdir -m 0755 -p /var/lib/cups + # Backwards compatibility + if [ ! -L /etc/cups ]; then + mv /etc/cups/* /var/lib/cups + rmdir /etc/cups + ln -s /var/lib/cups /etc/cups + fi + # First, clean existing symlinks + if [ -n "$(ls /var/lib/cups)" ]; then + for i in /var/lib/cups/*; do + [ -L "$i" ] && rm "$i" + done + fi + # Then, populate it with static files + cd ${rootdir}/etc/cups + for i in *; do + [ ! -e "/var/lib/cups/$i" ] && ln -s "${rootdir}/etc/cups/$i" "/var/lib/cups/$i" + done + ${optionalString cfg.gutenprint '' + ${gutenprint}/bin/cups-genppdupdate + ''} + ''; }; - systemd.services.cups-browsed = mkIf config.services.avahi.enable + systemd.services.cups-browsed = mkIf avahiEnabled { description = "CUPS Remote Printer Discovery"; wantedBy = [ "multi-user.target" ]; @@ -255,54 +328,13 @@ in serviceConfig.ExecStart = "${cups_filters}/bin/cups-browsed"; - restartTriggers = - [ config.environment.etc."cups/cups-browsed.conf".source - ]; + restartTriggers = [ browsedFile ]; }; - services.printing.drivers = - [ cups pkgs.ghostscript pkgs.cups_filters additionalBackends - pkgs.perl pkgs.coreutils pkgs.gnused pkgs.bc pkgs.gawk pkgs.gnugrep - ]; - - services.printing.cupsFilesConf = - '' - SystemGroup root wheel - - ServerBin ${bindir}/lib/cups - DataDir ${bindir}/share/cups - - AccessLog syslog - ErrorLog syslog - PageLog syslog - - TempDir ${cfg.tempDir} - - # User and group used to run external programs, including - # those that actually send the job to the printer. Note that - # Udev sets the group of printer devices to `lp', so we want - # these programs to run as `lp' as well. - User cups - Group lp - ''; - - services.printing.cupsdConf = + services.printing.extraConf = '' LogLevel info - ${concatMapStrings (addr: '' - Listen ${addr} - '') cfg.listenAddresses} - Listen /var/run/cups/cups.sock - - SetEnv PATH ${bindir}/lib/cups/filter:${bindir}/bin:${bindir}/sbin - - DefaultShared ${if cfg.defaultShared then "Yes" else "No"} - - Browsing ${if cfg.browsing then "Yes" else "No"} - - WebInterface ${if cfg.webInterface then "Yes" else "No"} - DefaultAuthType Basic <Location /> @@ -343,8 +375,6 @@ in Order deny,allow </Limit> </Policy> - - ${cfg.extraConf} ''; security.pam.services.cups = {}; |