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| author | cel <cel@f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519> | 2019-10-31 09:29:17 -1000 |
|---|---|---|
| committer | cel <cel@f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519> | 2019-10-31 09:59:33 -1000 |
| commit | 3eaae0075f7e0bd94595e6486528262ad962274c (patch) | |
| tree | b61a99f2b606d1d18f6193c9dc7dfd5d94dca540 | |
Init
| -rw-r--r-- | README.md | 31 | ||||
| -rwxr-xr-x | gemini.filter.dpi | 143 |
2 files changed, 174 insertions, 0 deletions
diff --git a/README.md b/README.md new file mode 100644 index 0000000..6763ad3 --- /dev/null +++ b/README.md @@ -0,0 +1,31 @@ +# dillo-gemini + +[Gemini][] protocol plugin for [Dillo][]. + +## Screenshot + + + +## Install + +```sh +git clone ssb://%V0D7DtSnZyyAp1NbgOJF2ZAFMeUy9eXwyClCEKYUYAI=.sha256 dillo-gemini +cd dillo-gemini +mkdir -p ~/.dillo/dpi/gemini +ln -rs gemini.dpi ~/.dillo/dpi/gemini +test -f ~/.dillo/dpidrc || cp /etc/dillo/dpidrc ~/.dillo/dpidrc +echo 'proto.gemini=gemini/gemini.dpi' >> ~/.dillo/dpidrc +dpidc stop +``` + +## Sites to try + +- <gemini://gemini.circumlunar.space/> +- <gemini://gemini.conman.org/> + +[Gemini]: https://gopher.tildeverse.org/zaibatsu.circumlunar.space/1/~solderpunk/gemini +[Dillo]: https://dillo.org/ + +## License + +FSFAP 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 + "<cmd='open_url' url='"*);; + *) echo $cmd; exit;; +esac +url=${cmd#"<cmd='open_url' url='"} +url=${url%"' '"} + +serve_404() { + printf "<cmd='start_send_page' url='' '>\n" + printf "Content-type: text/plain\r\n\r\n" + echo Not found +} + +render_gemini() { + printf "Content-type: text/html\r\n\r\n<!doctype html><pre>" + sed 's/^\(=>\s*\)\(\S*\)*\(.*\)/\1<a href="\2">\2<\/a>\3/' + printf "%s" "</pre>" +} + +send_status_msg() { + printf "<cmd='send_status_message' msg='%s' '>" "$*" +} + +serve_status_not_supported() { + printf "<cmd='start_send_page' url='' '>\n" + printf "Content-type: text/plain\r\n\r\n" + echo Status not implemented: $1 + echo $2 +} + +serve_missing_status() { + printf "<cmd='start_send_page' url='' '>\n" + printf "Content-type: text/plain\r\n\r\n" + echo Empty status response. $2 +} + +serve_success() { + printf "<cmd='start_send_page' url='' '>\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 "<cmd='start_send_page' url='' '>\n" + printf "Content-type: text/html\r\n\r\n" + # TODO: html-escape url + cat <<-EOF + <!doctype html> + <html> + <head> + <title>Redirect to $url</title> + </head> + <body> + <h3>Redirect to <a href="$url">$url</a></3> + </body> + </html> + EOF +} + +serve_error() { + status=$1 + meta=$2 + send_status_msg "Request failed" + printf "<cmd='start_send_page' url='' '>\n" + printf "Content-type: text/html\r\n\r\n" + cat <<-EOF + <!doctype html> + <html> + <head> + <title>Request failed</title> + </head> + <body> + <h3>Request failed: $status</h3> + <code>$meta</code> + </body> + </html> + EOF +} + +serve_fail() { + meta="$1" + send_status_msg "Client certificate required" + printf "<cmd='start_send_page' url='' '>\n" + printf "Content-type: text/html\r\n\r\n" + cat <<-EOF + <!doctype html> + <html> + <head> + <title>Client certificate required</title> + </head> + <body> + <h3>Client certificate required</h3> + <p>Not implemented!</p> + <code>$meta</code> + </body> + </html> + 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 |