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cel
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# dillo-gemini
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[Gemini][] protocol plugin for [Dillo][].
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## Screenshot
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## Install
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```sh
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git clone ssb://%V0D7DtSnZyyAp1NbgOJF2ZAFMeUy9eXwyClCEKYUYAI=.sha256 dillo-gemini
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cd dillo-gemini
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mkdir -p ~/.dillo/dpi/gemini
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ln -rs gemini.dpi ~/.dillo/dpi/gemini
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test -f ~/.dillo/dpidrc || cp /etc/dillo/dpidrc ~/.dillo/dpidrc
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echo 'proto.gemini=gemini/gemini.dpi' >> ~/.dillo/dpidrc
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dpidc stop
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```
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## Sites to try
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- <gemini://gemini.circumlunar.space/>
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- <gemini://gemini.conman.org/>
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[Gemini]: https://gopher.tildeverse.org/zaibatsu.circumlunar.space/1/~solderpunk/gemini
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[Dillo]: https://dillo.org/
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## License
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FSFAP
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#!/bin/bash
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# dillo-gemini
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# © 2019 cel @f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519
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# Copying and distribution of this file, with or without modification,
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# are permitted in any medium without royalty provided the copyright
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# notice and this notice are preserved. This file is offered as-is,
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# without any warranty.
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read -d '>' auth
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read -d '>' cmd
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case "$cmd" in
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"<cmd='open_url' url='"*);;
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*) echo $cmd; exit;;
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esac
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url=${cmd#"<cmd='open_url' url='"}
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url=${url%"' '"}
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serve_404() {
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printf "<cmd='start_send_page' url='' '>\n"
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printf "Content-type: text/plain\r\n\r\n"
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echo Not found
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}
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render_gemini() {
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printf "Content-type: text/html\r\n\r\n<!doctype html><pre>"
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sed 's/^\(=>\s*\)\(\S*\)*\(.*\)/\1<a href="\2">\2<\/a>\3/'
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printf "%s" "</pre>"
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}
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send_status_msg() {
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printf "<cmd='send_status_message' msg='%s' '>" "$*"
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}
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serve_status_not_supported() {
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printf "<cmd='start_send_page' url='' '>\n"
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printf "Content-type: text/plain\r\n\r\n"
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echo Status not implemented: $1
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echo $2
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}
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serve_missing_status() {
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printf "<cmd='start_send_page' url='' '>\n"
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printf "Content-type: text/plain\r\n\r\n"
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echo Empty status response. $2
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}
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serve_success() {
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printf "<cmd='start_send_page' url='' '>\n"
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type=$1
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case "$type" in
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text/gemini*) render_gemini;;
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*) printf "Content-type: $type\r\n\r\n"; cat;;
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esac
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}
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serve_redirect() {
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url=$1
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send_status_msg "Redirected"
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printf "<cmd='start_send_page' url='' '>\n"
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printf "Content-type: text/html\r\n\r\n"
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# TODO: html-escape url
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cat <<-EOF
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<!doctype html>
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<html>
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<head>
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<title>Redirect to $url</title>
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</head>
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<body>
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<h3>Redirect to <a href="$url">$url</a></3>
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</body>
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</html>
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EOF
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}
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serve_error() {
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status=$1
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meta=$2
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send_status_msg "Request failed"
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printf "<cmd='start_send_page' url='' '>\n"
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printf "Content-type: text/html\r\n\r\n"
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cat <<-EOF
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<!doctype html>
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<html>
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<head>
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<title>Request failed</title>
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</head>
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<body>
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<h3>Request failed: $status</h3>
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<code>$meta</code>
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</body>
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</html>
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EOF
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}
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serve_fail() {
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meta="$1"
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send_status_msg "Client certificate required"
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printf "<cmd='start_send_page' url='' '>\n"
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printf "Content-type: text/html\r\n\r\n"
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cat <<-EOF
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<!doctype html>
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<html>
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<head>
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<title>Client certificate required</title>
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</head>
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<body>
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<h3>Client certificate required</h3>
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<p>Not implemented!</p>
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<code>$meta</code>
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</body>
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</html>
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EOF
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}
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serve_gemini() {
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url=$1
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url1=${url#gemini://}
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hostname=${url1%%/*}
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host=${hostname%%:*}
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port=${hostname##*:}
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if [ "$host" = "$port" ]; then port=1965; fi
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send_status_msg "Sending request..."
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printf "%s\r\n" "$url" | ncat --ssl "$host" "$port" | {
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read status meta
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send_status_msg "Status: $status"
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meta=$(echo "$meta" | sed 's/\s*$//')
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case "$status" in
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1*) serve_input "$meta";;
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2*) serve_success "$meta";;
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3*) serve_redirect "$meta";;
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4*) serve_error "$status" "$meta";;
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5*) serve_error "$meta";;
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6*) serve_client_cert_required "$meta";;
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'') serve_missing_status "$meta";;
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*) serve_status_not_supported "$status" "$meta";;
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esac
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}
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}
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case "$url" in
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gemini:*) serve_gemini "$url";;
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*) serve_404;;
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esac
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