From 0fd2545f286734b69363fdb492fbfc6727e6fb32 Mon Sep 17 00:00:00 2001
From: paul <paul@plutz.net>
Date: Wed, 9 Nov 2016 15:34:27 +0000
Subject: [PATCH] use proper cgi for response headers, switch cache machanism
 to timestamps

svn path=/trunk/; revision=41
---
 server.sh |  5 +++--
 static.sh | 13 ++++++++-----
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/server.sh b/server.sh
index 4eb253f..a4229b2 100755
--- a/server.sh
+++ b/server.sh
@@ -71,9 +71,10 @@ HTTP_format(){
   /^\r?$/!{H;n;bA}
   
   g
-  s;^(\r?\n)*;;
+  s;^(\r?\n)*;;;
+  s;([^\r])\n;\1\r\n;g;
   aConnection: close\r\n\r
-  /^HTTP\/[0-9]\.[0-9] [1-5][0-9][0-9] .*/bX
+  /^Status: *[1-5][0-9][0-9] .*/{s;^Status: *;HTTP/1.1 ;; bX}
   s;^(.+\n)?Location: .*$;HTTP/1.1 302 Found\r\n&;
   s;^(.+\n)?Content-Type: .*$;HTTP/1.1 200 OK\r\n&;
   
diff --git a/static.sh b/static.sh
index 44c6556..ae8de6c 100755
--- a/static.sh
+++ b/static.sh
@@ -27,16 +27,19 @@ date="$(stat -c %Y "$file")"
 declare -A suffix
 suffix[css]="text/css"
 
+[ -n "$HTTP_IF_MODIFIED_SINCE" ] && cachedate="$(date -d "$HTTP_IF_MODIFIED_SINCE" +%s)"
+
 if [ -x "$file" -o \! -r "$file" -o \! -f "$file" ]; then
-  printf 'HTTP/1.1 403 Forbidden\r\n\r\n'
-elif [ "$date" = "$HTTP_IF_NONE_MATCH" ]; then
-  printf 'HTTP/1.1 304 Not Modified\r\n'
-  printf 'Etag: %s\r\n\r\n' "$date"
+  printf 'Status:403 Forbidden\r\n\r\n'
+elif [ "$date" = "$cachedate" ]; then
+  debug "Delegating to client cache"
+  printf 'Status:304 Not Modified\r\n'
+  printf 'Last-Modified: %s\r\n\r\n' "$(date -Rd "@$date")"
 else
   length="$(stat -c %s "$file")"
   magic="${suffix[${file##*.}]:-$(file -bi "$file")}"
 
-  printf 'Etag: %s\r\n' "$date"
+  printf 'Last-Modified: %s\r\n' "$(date -Rd "@$date")"
   printf 'Content-Type: %s\r\n' "${magic:-all/all}"
   printf 'Content-Length: %s\r\n' "$length"
   printf '\r\n'
-- 
2.39.2