Redirect to $url

From 3eaae0075f7e0bd94595e6486528262ad962274c Mon Sep 17 00:00:00 2001 From: cel Date: Thu, 31 Oct 2019 09:29:17 -1000 Subject: Init --- gemini.filter.dpi | 143 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100755 gemini.filter.dpi (limited to 'gemini.filter.dpi') diff --git a/gemini.filter.dpi b/gemini.filter.dpi new file mode 100755 index 0000000..53932e5 --- /dev/null +++ b/gemini.filter.dpi @@ -0,0 +1,143 @@ +#!/bin/bash +# dillo-gemini +# © 2019 cel @f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519 +# Copying and distribution of this file, with or without modification, +# are permitted in any medium without royalty provided the copyright +# notice and this notice are preserved. This file is offered as-is, +# without any warranty. + +read -d '>' auth +read -d '>' cmd +case "$cmd" in + "\n" + printf "Content-type: text/plain\r\n\r\n" + echo Not found +} + +render_gemini() { + printf "Content-type: text/html\r\n\r\n

"
+	sed 's/^\(=>\s*\)\(\S*\)*\(.*\)/\1\2<\/a>\3/'
+	printf "%s" "

" +} + +send_status_msg() { + printf "" "$*" +} + +serve_status_not_supported() { + printf "\n" + printf "Content-type: text/plain\r\n\r\n" + echo Status not implemented: $1 + echo $2 +} + +serve_missing_status() { + printf "\n" + printf "Content-type: text/plain\r\n\r\n" + echo Empty status response. $2 +} + +serve_success() { + printf "\n" + type=$1 + case "$type" in + text/gemini*) render_gemini;; + *) printf "Content-type: $type\r\n\r\n"; cat;; + esac +} + +serve_redirect() { + url=$1 + send_status_msg "Redirected" + printf "\n" + printf "Content-type: text/html\r\n\r\n" + # TODO: html-escape url + cat <<-EOF + + + + Redirect to $url + + +

Redirect to $url + + + EOF +} + +serve_error() { + status=$1 + meta=$2 + send_status_msg "Request failed" + printf "\n" + printf "Content-type: text/html\r\n\r\n" + cat <<-EOF + + + + Request failed + + +
Request failed: $status
+ `$meta` + + + EOF +} + +serve_fail() { + meta="$1" + send_status_msg "Client certificate required" + printf "\n" + printf "Content-type: text/html\r\n\r\n" + cat <<-EOF + + + + Client certificate required + + +
Client certificate required
+
Not implemented!
+ `$meta` + + + EOF +} + +serve_gemini() { + url=$1 + url1=${url#gemini://} + hostname=${url1%%/} + host=${hostname%%:} + port=${hostname##:} + if [ "$host" = "$port" ]; then port=1965; fi + send_status_msg "Sending request..." + printf "%s\r\n" "$url" | ncat --ssl "$host" "$port" | { + read status meta + send_status_msg "Status: $status" + meta=$(echo "$meta" | sed 's/\s$//') + case "$status" in + 1) serve_input "$meta";; + 2) serve_success "$meta";; + 3) serve_redirect "$meta";; + 4) serve_error "$status" "$meta";; + 5) serve_error "$meta";; + 6) serve_client_cert_required "$meta";; + '') serve_missing_status "$meta";; + ) serve_status_not_supported "$status" "$meta";; + esac + } +} + +case "$url" in + gemini:) serve_gemini "$url";; + *) serve_404;; +esac -- cgit v1.2.3