add Onion-Location header to each page with relative URLs (#401)

http://jarvisz2fxjx54yve4zgtp5rehnwehu22nkww47dg2qv4e6xxzq6fdyd.onion

config.toml

@@ -28,6 +28,7 @@ disableAliases = true
   description = "Hi there! I'm a frontend web developer based in Boston, Massachusetts specializing in the JAMstack, modern JavaScript frameworks, and progressive web apps."
   image = "img/logo.png"  # relative to assetDir root
   mainSection = "notes"  # content that appears in feeds
+  baseOnionURL = "http://jarvisz2fxjx54yve4zgtp5rehnwehu22nkww47dg2qv4e6xxzq6fdyd.onion"
   [params.theme]
     maxWidth = 865  # px
     defaultTheme = "light"  # light or dark?

layouts/index.headers

@@ -11,3 +11,16 @@
 # https://developers.google.com/amp/cache/update-cache#update-cache-guidelines
 /.well-known/amphtml/apikey.pub
   Content-Type: text/plain; charset=UTF-8
+
+# Set Source and Onion-Location headers based on each URL
+{{- range $page := .Site.Pages }}
+{{ $page.RelPermalink }}
+  Onion-Location: {{ print .Site.Params.baseOnionURL $page.RelPermalink }}
+  X-View-Source: {{ .Scratch.Get "sourceURL" }}
+
+{{ if and .IsPage (ne .Params.amp false) -}}
+{{ print $page.RelPermalink "amp.html" }}
+  Onion-Location: {{ print .Site.Params.baseOnionURL $page.RelPermalink "amp.html" }}
+  X-View-Source: {{ .Scratch.Get "sourceURL" }}
+{{- end }}
+{{ end -}}

netlify.toml

@@ -94,7 +94,6 @@
     X-Content-Type-Options = "nosniff"
     X-Frame-Options = "SAMEORIGIN"
     X-XSS-Protection = "1; mode=block"
-    X-View-Source = "https://jrvs.io/src"
     X-Got-Milk = "2%"
 # PGP key: open in browser, download correctly
 [[headers]]