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|
#! /bin/sh
set -euf
# TODO Cache-Control [RFC 2616, Section 14.9]
# TODO Accept-Encoding: gzip,deflate
# TODO Keep-Alive: 300
# TODO Connection: keep-alive
# TODO /robots.txt
Server='htgen'
Request="$(sed 's/\r$//;/^$/q')"
date="`date '+%Y-%m-%d %H:%M:%S'`"
##
## Parse request.
##
Request_Line=
eval "$(echo "$Request" | sed -rn '
1{s^([a-zA-Z]+) ([a-zA-Z0-9?&+*/.-]+) HTTP/([0-9]+\.[0-9]+)$\
Request_Line="&"\
Method="\1"\
Request_URI="\2"\
HTTP_Version="\3"\
p;t;i\
Request_Line= # invalid request
q
}
s/^Host: ([a-zA-Z0-9?+&/:.-]+)$/Host="\1"/p
')"
##
## Log request.
##
# TODO real logging
cat>&2<<EOF
## $date, $TCPREMOTEIP:$TCPREMOTEPORT $Request_Line
$Request
EOF
##
## Handle request.
##
if test -z "$Request_Line" ; then
echo "# [1;31mFAIL[m"
exit -23
fi >&2
# TODO Date: `date --utc`
case "$Host" in
src.mine.nu:42380|src.mine.nu|vix|vix:42380|localhost:42380)
case "${Method-Invalid-Request}" in
GET|HEAD)
case "$Request_URI" in
/style5.css)
body_type=file
body=~/public_html$Request_URI
cat<<EOF
HTTP/1.0 200 OK
Connection: close
Content-Length: `du -b $body | cut -f1`
Content-Type: text/css
Server: $Server
EOF
;;
/favicon5.png|/favicon2.png)
body_type=file
body=~/public_html$Request_URI
cat<<EOF
HTTP/1.0 200 OK
Connection: close
Content-Length: `du -b $body | cut -f1`
Content-Type: image/png
Server: $Server
Cache-Control: public
EOF
;;
/|/index.html)
# TODO 304 Not Modified
# TODO better max-age(?)
# TODO may we use more than one Cache-Control?
body_type=file
body=~/public_html/index.html
cat<<EOF
HTTP/1.0 200 OK
Content-Type: text/html; charset=UTF-8
Server: $Server
Connection: close
Content-Length: `du -b $body | cut -f1`
Cache-Control: max-age=60
EOF
;;
*)
body_type=string
body="404 Not found: $Request_URI"
cat<<EOF
HTTP/1.0 404 Not Found
Content-Type: text/plain; charset=UTF-8
Server: $Server
Connection: close
Content-Length: ${#body}
EOF
;;
esac
;;
*) # Method
body_type=string
body="501 Not Implemented: $Method"
cat<<EOF
HTTP/1.0 501 Not Implemented
Content-Type: text/plain; charset=UTF-8
Server: $Server
Connection: close
Content-Length: ${#body}
Cache-Control: public
EOF
;;
esac
;;
*) # Host
body_type=string
body="403 Forbidden"
cat<<EOF
HTTP/1.1 403 Forbidden
Content-Type: text/plain; charset=UTF-8
Connection: close
Content-Length: ${#body}
Cache-Control: public
EOF
;;
esac
##
## Print message-body.
##
case "$Method" in
GET)
case "$body_type" in
file) cat "$body" ;;
string) echo -n "$body" ;;
esac
;;
esac
# Success (mod transfer)
echo "# OK" >&2
exit
|
