From bffc0534d22a831f95a6c46ed7dcfd2c38a4d0a5 Mon Sep 17 00:00:00 2001
From: Rodion Goritskov <rodion.goritskov@gmail.com>
Date: Fri, 7 Jun 2024 01:36:37 +0400
Subject: gnu: Add Agate service.

* rodion/services/agate.scm (Agate service): New variable.
---
 rodion/services/agate.scm | 117 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 117 insertions(+)
 create mode 100644 rodion/services/agate.scm

(limited to 'rodion/services')

diff --git a/rodion/services/agate.scm b/rodion/services/agate.scm
new file mode 100644
index 0000000..c8dff62
--- /dev/null
+++ b/rodion/services/agate.scm
@@ -0,0 +1,117 @@
+(define-module (rodion services agate)
+  #:use-module (guix records)
+  #:use-module (guix gexp)
+  #:use-module (ice-9 match)
+  #:use-module (gnu services shepherd)
+  #:use-module (gnu services admin)
+  #:use-module (gnu system pam)
+  #:use-module (gnu system shadow)
+  #:use-module (gnu services)
+  #:use-module (gnu packages admin)
+  #:use-module (gnu packages rust-apps)
+  #:export (agate-configuration
+            agate-configuration?
+            agate-configuration-package
+            agate-configuration-content
+            agate-configuration-cert
+            agate-configuration-key
+            agate-configuration-addr
+            agate-configuration-hostname
+            agate-configuration-lang
+            agate-configuration-silent
+            agate-configuration-serve-secret
+            agate-configuration-log-ip
+            agate-configuration-user
+            agate-configuration-group
+            agate-configuration-log-file
+
+            agate-service-type))
+
+(define-record-type* <agate-configuration>
+  agate-configuration make-agate-configuration
+  agate-configuration?
+  (package  agate-configuration-package
+            (default agate))
+  (content  agate-configuration-content
+            (default "/srv/gemini"))
+  (cert     agate-configuration-cert
+            (default #f))
+  (key      agate-configuration-key
+            (default #f))
+  (addr     agate-configuration-addr
+            (default '("0.0.0.0:1965" "[::]:1965")))
+  (hostname agate-configuration-hostname
+            (default #f))
+  (lang     agate-configuration-lang
+            (default #f))
+  (silent?  agate-configuration-silent
+            (default #f))
+  (serve-secret? agate-configuration-serve-secret
+                 (default #f))
+  (log-ip?  agate-configuration-log-ip
+            (default #t))
+  (user     agate-configuration-user
+            (default "agate"))
+  (group    agate-configuration-group
+            (default "agate"))
+  (log-file agate-configuration-log
+            (default "/var/log/agate.log")))
+
+(define agate-shepherd-service
+  (match-lambda
+    (($ <agate-configuration> package content cert key addr
+                              hostname lang silent? serve-secret?
+                              log-ip? user group log-file)
+     (list (shepherd-service
+            (provision '(agate))
+            (requirement '(networking))
+            (documentation "Run the agate Gemini server.")
+            (start (let ((agate (file-append package "/bin/agate")))
+                     #~(make-forkexec-constructor
+                        (list #$agate
+                              "--content" #$content
+                              "--addr" #$@addr
+			      "--certs" #$cert
+                              #$@(if lang
+                                     (list "--lang" lang)
+                                     '())
+                              #$@(if hostname
+                                     (list "--hostname" hostname)
+                                     '())
+                              #$@(if silent? '("--silent") '())
+                              #$@(if serve-secret? '("--serve-secret") '())
+                              #$@(if log-ip? '("--log-ip") '()))
+                        #:user #$user #:group #$group
+                        #:log-file #$log-file)))
+            (stop #~(make-kill-destructor)))))))
+
+(define agate-accounts
+  (lambda (config)
+    (let ((group (agate-configuration-group config))
+          (user (agate-configuration-user config)))
+      `(,@(if (equal? group "agate")
+              '()
+              (list (user-group (name "agate") (system? #t))))
+        ,(user-group
+          (name group)
+          (system? #t))
+        ,(user-account
+          (name user)
+          (group group)
+          (supplementary-groups '("agate"))
+          (system? #t)
+          (comment "agate server user")
+          (home-directory "/var/empty")
+          (shell (file-append shadow "/sbin/nologin")))))))
+
+(define agate-service-type
+  (service-type
+   (name 'agate)
+   (extensions
+    (list (service-extension account-service-type
+                             agate-accounts)
+          (service-extension shepherd-root-service-type
+                             agate-shepherd-service)))
+   (default-value (agate-configuration))
+   (description "Run Agate, a simple Gemini protocol server written in
+Rust.")))
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