diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..94a0453 --- /dev/null +++ b/LICENSE @@ -0,0 +1,621 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS diff --git a/README.org b/README.org new file mode 100644 index 0000000..a14420b --- /dev/null +++ b/README.org @@ -0,0 +1,45 @@ +#+title: Readme + +Systemd-parse is a common lisp library to parse =.service= files into useable data structures, and vice versa. +It currently provides two functions: =read-service= and =write-service= + +* Read-service +=read-service= takes a =.service= file and returns an association list. +The list associates section names with a hash table of the options under each section. + +#+begin_src common-lisp +(read-service "dbus.service") +#+end_src + +The following sample is taken from =dbus.service=: +#+begin_example +[Unit] +Description=D-Bus System Message Bus +Documentation=man:dbus-broker-launch(1) + +[Service] +Type=notify +Sockets=dbus.socket +OOMScoreAdjust=-900 + +[Install] +Alias=dbus.service +#+end_example + +This file is parsed into the following lisp structure: +(I illustrate each table as "") +#+begin_src common-lisp +(("Unit" .
"D-Bus System Message Bus" + "Documentation" -> "man:dbus-broker-launch(1)">) + ("Service" .
"notify" + "Sockets" -> "dbus.socket" + "OOMScoreAdjust" -> "-900">) + ("Install" .
"dbus.service">)) +#+end_src + +* Write-service +=write-service= translates the association list back into a =.service= file. + +#+begin_src common-lisp +(write-service "test.service" my-service-options-list) +#+end_src diff --git a/packages-systemd.lisp b/packages-systemd.lisp deleted file mode 100644 index 161d7b7..0000000 --- a/packages-systemd.lisp +++ /dev/null @@ -1,5 +0,0 @@ -(defpackage :service-edit - (:use :common-lisp)) - -(defpackage :service-opts - (:use :common-lisp)) diff --git a/packages.lisp b/packages.lisp new file mode 100644 index 0000000..8fc8100 --- /dev/null +++ b/packages.lisp @@ -0,0 +1,19 @@ +;; systemd-parse: A library for extracting and writing data to and from systemd .service files. +;; Copyright (C) 2023 Judah Sotomayor + +;; 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. + +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with this program. If not, see . + +(defpackage :systemd-parse + (:use :common-lisp) + (:export :read-service :write-service :split-line)) diff --git a/src/read-service.lisp b/src/read-service.lisp deleted file mode 100644 index 72185c8..0000000 --- a/src/read-service.lisp +++ /dev/null @@ -1,28 +0,0 @@ - ;(in-package :service-edit) -(defun read-service (filename) - (let* ((p (merge-pathnames filename)) - (section-scanner (ppcre:create-scanner "^\\[(.*)\\]$")) - (sections nil) - (lines (uiop:read-file-lines p)) - (cursec nil)) - (dolist (line lines) - (ppcre:register-groups-bind (match) (section-scanner line) - (if match - (progn (setf sections (acons (read-from-string match ) (make-hash-table) sections)) - (setf cursec match)) - (split-line line (cdr (assoc cursec sections))) - ))) - sections)) - -(defun split-line (line value-table) - (ppcre:register-groups-bind (first second) ("(.*)=(.*)" line) - (setf (gethash first value-table ) second ))) - - - - - - -;; Testing macro for convenience -(defmacro test () - (list 'read-service "/home/user/sst/src/test.service")) diff --git a/src/read.lisp b/src/read.lisp new file mode 100644 index 0000000..985c413 --- /dev/null +++ b/src/read.lisp @@ -0,0 +1,45 @@ +;; systemd-parse: A library for extracting and writing data to and from systemd .service files. +;; Copyright (C) 2023 Judah Sotomayor + +;; This program is free software: you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with this program. If not, see . + + +(in-package :systemd-parse) + +(defun read-service (filename) + "Ingest the given file into a associative list. +This list maps section names to hash-tables of the settings in the section." + + (let ((lines (uiop:read-file-lines (merge-pathnames filename))) + (section-scanner (ppcre:create-scanner "^\\[(.*)\\]$")) + (sections nil) + (cursec nil)) + + (dolist (line lines) + (if (not (ppcre:register-groups-bind (match) (section-scanner line) + (setf sections (acons match (make-hash-table :test 'equal) sections) + cursec match))) + (split-line line (cdr (assoc cursec sections :test #'string=))))) + + (nreverse sections) ;Adding to lists with acons adds them in reverse + )) + +(defun split-line (line value-table) + "Split the given key=value line into an associated pair +and add it to the given hash-table" + + (ppcre:register-groups-bind (systemd-variable setting-value ) ("(.*)=(.*)" line) + (if (string/= setting-value "nil") + (setf (gethash systemd-variable value-table ) setting-value ) + (remhash systemd-variable value-table)))) diff --git a/src/test.service b/src/test.service deleted file mode 100644 index d2c1e26..0000000 --- a/src/test.service +++ /dev/null @@ -1,22 +0,0 @@ -[Unit] -Description=D-Bus System Message Bus -Documentation=man:dbus-broker-launch(1) -DefaultDependencies=false -After=dbus.socket -Before=basic.target shutdown.target -Requires=dbus.socket -Conflicts=shutdown.target - -[Service] -Type=notify -Sockets=dbus.socket -OOMScoreAdjust=-900 -LimitNOFILE=16384 -ProtectSystem=full -PrivateTmp=true -PrivateDevices=true -ExecStart=/usr/bin/dbus-broker-launch --scope system --audit -ExecReload=/usr/bin/busctl call org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus ReloadConfig - -[Install] -Alias=dbus.service diff --git a/src/write.lisp b/src/write.lisp new file mode 100644 index 0000000..fbd5811 --- /dev/null +++ b/src/write.lisp @@ -0,0 +1,34 @@ +;; systemd-parse: A library for extracting and writing data to and from systemd .service files. +;; Copyright (C) 2023 Judah Sotomayor + +;; 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. + +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with this program. If not, see . + +(in-package :systemd-parse) + +(defun write-service (filename section-list) + "Ingest an associative list with hash-tables as values, +and write it to the given filename." + + (let ((p (merge-pathnames filename))) + (with-open-file (s p :direction :output :if-exists :overwrite) + + (dolist (section section-list) + (destructuring-bind (name . table) section + (format s "[~A]~%" name) ;Write the section name + + (with-hash-table-iterator (i table) + (loop (multiple-value-bind (entry-p key value) (i) + (if entry-p + (format s "~A=~A~%" key value) ;Write each setting + (progn (format s "~%") (return))))))))))) diff --git a/sst.asd b/sst.asd deleted file mode 100644 index e19755c..0000000 --- a/sst.asd +++ /dev/null @@ -1,9 +0,0 @@ -(defsystem :systemd-parse - :depends-on (:cl-ppcre) - :components ((:file "packages-systemd") - (:module "src" - :serial t - :components ((:file "read-service") - (:file "write-service") - (:file "service-opts") - )))) diff --git a/systemd-parse.asd b/systemd-parse.asd new file mode 100644 index 0000000..635eb06 --- /dev/null +++ b/systemd-parse.asd @@ -0,0 +1,16 @@ +(defsystem :systemd-parse + :depends-on (:cl-ppcre) + :components ((:file "packages") + (:module "src" + :serial t + :components ((:file "read") + (:file "write") + ))) + :author "Judah Sotomayor " + :maintainer "Judah Sotomayor " + :license "GPLv3" + :version "0.1" + :homepage "https://git.freedomland.xyz/judahsotomayor/systemd-parse" + :bug-tracker "https://git.freedomland.xyz/judahsotomayor/systemd-parse/issues" + :source-control (:git "https://git.freedomland.xyz/judahsotomayor/systemd-parse.git") + :description "A library for extracting and writing data to and from systemd .service files.")