#!/bin/dash

BASE='/home/dkl9/private/git.repostorage'
REPO="${REQUEST_URI#/git/}"
REPO="${REPO%%/*}"
REPO=`echo "$REPO" | tr -cd 'a-zA-Z0-9._-'`
MATCH=`ls "$BASE" | grep "^$REPO" | head -n 1`
if [ -n "$MATCH" ]
then
    export GIT_PROJECT_ROOT="$BASE/$MATCH"
    export GIT_HTTP_EXPORT_ALL=1
    export PATH_INFO="${REQUEST_URI#*/$REPO}"
    export PATH_INFO="${PATH_INFO%%\?*}"
    if [ -z "$PATH_INFO" ]
    then
         printf 'Status: 200 OK\nContent-Type: text/plain\n\n'
         printf '%s is a git repository.\n' "$MATCH" 
         printf 'Browse it online at\nhttps://%s/%s\n' 'git.dkl9.net' "$MATCH"
         printf 'Clone it with\ngit clone https://%s/git/%s\n' 'dkl9.net' "$MATCH"
    elif [ -r "$GIT_PROJECT_ROOT" ]
    then
         exec /usr/lib/git-core/git-http-backend
    else
         printf 'Status: 403 Forbidden\nContent-Type: text/plain\n\n'
         printf '%s is a git repository here, but the server cannot read it\n' "$MATCH"
    fi
else
    printf 'Status: 404 Not Found\nContent-Type: text/plain\n\n'
    printf 'No repository found matching %s\n' "$REPO"
fi