From 466b8c5103208e7393fdb710d275e7d687be2592 Mon Sep 17 00:00:00 2001
From: tv <tv@vix>
Date: Tue, 2 Feb 2010 04:49:37 +0100
Subject: Added default cases for $Host and $Method

Added default case for $Host: Forbidded
Added default case for $Method: Not Implemented
Added preliminary Cache-Control
---
 htgen.sh | 116 ++++++++++++++++++++++++++++++++++++---------------------------
 htgend   |   3 +-
 2 files changed, 69 insertions(+), 50 deletions(-)

diff --git a/htgen.sh b/htgen.sh
index c76283a..262e81b 100755
--- a/htgen.sh
+++ b/htgen.sh
@@ -2,8 +2,12 @@
 set -euf
 
 
+# TODO Cache-Control [RFC 2616, Section 14.9]
+# TODO Accept-Encoding: gzip,deflate
+# TODO Keep-Alive: 300
+# TODO Connection: keep-alive
 
-Server='httpd-single/0.2'
+Server='htgen'
 Request="$(sed 's/\r$//;/^$/q')"
 date="`date '+%Y-%m-%d %H:%M:%S'`"
 
@@ -33,27 +37,28 @@ cat>&2<<EOF
 ## $date, $TCPREMOTEIP:$TCPREMOTEPORT $Request_Line
 $Request
 EOF
-  if test -z "$Request_Line" ; then
-    echo "# FAIL"
-    exit -23
-  fi >&2
-    
-  # TODO Date: `date --utc`
+
+##
+## Handle request.
+##
+if test -z "$Request_Line" ; then
+  echo "# FAIL"
+  exit -23
+fi >&2
   
-  ##
-  ## Handle request.
-  ##
-  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
+# 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
+Connection: close
 Content-Length: `du -b $body | cut -f1`
 Content-Type: text/css
 Server: $Server
@@ -65,22 +70,27 @@ EOF
             body=~/public_html$Request_URI
             cat<<EOF
 HTTP/1.0 200 OK
-Connection: Close
+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
+Connection: close
 Content-Length: `du -b $body | cut -f1`
+Cache-Control: max-age=60
 
 EOF
           ;;
@@ -91,47 +101,55 @@ EOF
 HTTP/1.0 404 Not Found
 Content-Type: text/plain; charset=UTF-8
 Server: $Server
-Connection: Close
+Connection: close
 Content-Length: ${#body}
 
 EOF
           ;;
         esac
-
-        case "$Method" in
-          GET)
-            case "$body_type" in
-              file) cat "$body" ;;
-              string) echo "$body" ;;
-            esac
-          ;;
-        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
-
-# tcpserver info:
-# $PROTO is the string TCP.
-# 
-# $TCPLOCALIP is the IP address of the local host, in dotted-decimal form.
-# 
-# $TCPLOCALPORT is the local TCP port number, in decimal.
-# 
-# $TCPLOCALHOST is the name listed in DNS for the local host. If no name is available, $TCPLOCALHOST is not set. Beware that $TCPLOCALHOST can contain arbitrary characters.
-# 
-# $TCPREMOTEIP is the IP address of the remote host, in dotted-decimal form.
-# 
-# $TCPREMOTEPORT is the remote TCP port number, in decimal.
-# 
-# $TCPREMOTEHOST is the name listed in DNS for the remote host. If no name is available, $TCPREMOTEHOST is not set. Beware that $TCPREMOTEHOST can contain arbitrary characters.
-# 
-# $TCPREMOTEINFO is a connection-specific string supplied by the remote host via the 931/1413/IDENT/TAP protocol. If no information is available, $TCPREMOTEINFO is not set. Beware that $TCPREMOTEINFO can contain arbitrary characters.
diff --git a/htgend b/htgend
index 9f3ba6f..0e4c668 100755
--- a/htgend
+++ b/htgend
@@ -1,7 +1,8 @@
 #! /bin/sh
 set -euf
 HTGEN_PROG="${HTGEN_SH-$(dirname "$(readlink -f "$0")")/htgen.sh}"
-HTGEN_HOST="${HTGEN_HOST-0}"
+HTGEN_HOST="${HTGEN_HOST-0.0.0.0}"
 HTGEN_PORT="${HTGEN_PORT-42380}"
 TCPSERVER_OPTS='-c 423 -t 2 -D'
+echo "#### htgend $HTGEN_HOST:$HTGEN_PORT" >&2
 exec tcpserver $TCPSERVER_OPTS "$HTGEN_HOST" "$HTGEN_PORT" "$HTGEN_PROG"
-- 
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