💾 Archived View for celehner.com › gemini-serve captured on 2020-09-24 at 00:40:15.
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#!/bin/sh
# Copyright 2020 Charles E. Lehner
# 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.
exec 2>>/tmp/gmi.err
if [ -n "$GEMINI_URL" ]; then
# allow server to serve its own source
printf '20 text/plain\r\n'
exec cat "$0"
fi
read req
req=$(echo "$req" | sed 's/\s\+$//')
ip_hash=$(echo "$NCAT_REMOTE_ADDR" | sha256sum | head -c 16)
date=$(date -u +%FT%TZ)
printf "%s %s %s\n" "$date" "$ip_hash" "$req" >>/tmp/gmi.log
case "$req" in
gemini://celehner.com*)
path=${req#gemini://celehner.com}
case "$path" in
*\?*)
query=${path#*\?}
path=${path%%\?*}
;;
*)
query=
;;
esac
case "$path" in
*.add-backlink)
url=${req%%.add-backlink*}
path=${path%%.add-backlink}
file="./$path"
if [ -d "$file" ]; then
file="$file/index.gmi"
fi
exec ./add-backlink "$url" "$path" "$query" "$file"
;;
esac
file="./$path"
if [ -d "$file" ]; then
file="$file/index.gmi"
fi
if [ -f "$file" ]; then
if [ -x "$file" -a -z "$GEMINI_URL" ]; then
GEMINI_URL="$req" exec "$file" "$query"
fi
case "$file" in
*gmi) printf '20 text/gemini\r\n';;
*txt) printf '20 text/plain\r\n';;
*) printf '20 %s\r\n' "$(file -Lb --mime-type "$file")";;
esac
exec cat "$file"
fi
;;
*)
printf '53 Proxy request refused\r\n'
;;
esac
printf '51 Not Found\r\n'