Fix build info hyperlink escaping

- Add generator info to Atom feed.
- Add generator version and commit hash to meta page, along with a link
  to the last CI job if available.
- Use $JOB_URL to detect CI since that variable can be re-used to fetch
  the URL to the latest CI logs.

config.toml

@@ -124,6 +124,10 @@ disableKinds = ["taxonomy", "term"]
 	about = ["HTML", "atom", "RSS"]
 	meta = ["HTML", "atom", "RSS"]
 
+[security]
+	[security.funcs]
+		getenv = ['^JOB_URL$']
+
 # https://github.com/nekr0z/static-webmentions
 [webmentions]
 	newDir = "public"

content/meta/_index.md

@@ -5,6 +5,8 @@ outputs:
     - html
 description: "About this site. How it's built, why it's built that way, privacy, accessibility, mirrors, etc."
 ---
+{{<build-info>}}
+
 How I run this site
 -------------------
 

layouts/_default/list.atom.xml

@@ -52,6 +52,7 @@
 	<admin:errorReportsTo rdf:resource="mailto:{{ .Site.Author.email }}" />
 	<link rel="license" type="application/rdf+xml" href="https://creativecommons.org/licenses/by-sa/4.0/rdf" />
   <updated>{{ now.Format "2006-01-02T15:04:05-07:00" | safeHTML }}</updated>
+	<generator uri="https://gohugo.io/" version="{{ .Site.Hugo.Version }}">Hugo {{ .Site.Hugo.Version }}</generator>
   <id>{{ .Permalink }}</id>
   {{ range $pages -}}
 	{{- if not .Params.Private -}}

layouts/shortcodes/build-info.html

@@ -0,0 +1,12 @@
+{{- $now := now -}}
+{{- $buildCtx := "on my workstation" -}}
+{{- with getenv "JOB_URL" -}}
+	{{- $buildCtx = printf `<a href="%s">on builds.sr.ht</a>` . | safeHTML -}}
+{{- end -}}
+<p>
+	This site was last built on
+	<time datetime="{{ $now.Format "2006-01-02T15:04:05-07:00" | safeHTML }}">{{ $now.Format "2006-01-02 15:04:05-07:00" | safeHTML }}</time>
+	by
+	<a href="https://github.com/gohugoio/hugo/tree/{{ .Site.Hugo.CommitHash }}">Hugo {{ .Site.Hugo.Version }}</a>
+	{{ $buildCtx }}.
+</p>

scripts/get-webmentions.sh

@@ -49,7 +49,7 @@ trap check_cached_webmentions EXIT
 # Grab my long-lived key (password). We will use this to authenticate.
 key() {
 	set +u
-	if [ -n "$BUILD_SUBMITTER" ]; then
+	if [ -n "$JOB_URL" ]; then
 		cat ~/.webmentiond-key
 	else
 		pash show webmentiond-ci-key