support for "selected" keyword, improved handling of "checked"

[cgilite] / cgilite.sh

diff --git a/cgilite.sh b/cgilite.sh
index f0f2fa90a02e0883e84b5b3c88b32b50eb6ced20..2930a4c36259ff6332375ea80b3a0bd683ee31b3 100755 (executable)
--- a/cgilite.sh
+++ b/cgilite.sh
@@ -24,6 +24,7 @@ setopt -o OCTAL_ZEROES 2>&-
 
 BR="$(printf '\n')"
 CR="$(printf '\r')"
+cgilite_timeout=2
 
 HEADER(){
   # Read value of header line. Use this instead of
@@ -49,25 +50,50 @@ HEX_DECODE(){
   ')"
 }
 
-if [ "$1" = '--inetd' -a -z "$REQUEST_METHOD" ]; then
-  REMOTE_ADDR="${TCPREMOTEIP:-$NCAT_REMOTE_ADDR}"
-  SERVER_NAME="${TCPLOCALIP:-$NCAT_LOCAL_ADDR}"
-  SERVER_PORT="${TCPLOCALPORT:-$NCAT_LOCAL_PORT}"
-
-  read REQUEST_METHOD REQUEST_URI SERVER_PROTOCOL
-  PATH_INFO="$(HEX_DECODE "${REQUEST_URI%\?*}")"
-  QUERY_STRING="${REQUEST_URI#*\?}"
-  cgilite_headers="$(sed -u '/^\r\?$/q')"
-
-  HTTP_CONTENT_LENGTH="$(HEADER Content-Length |grep -xE '[0-9]+')"
-  HTTP_COOKIE="$(HEADER Cookie)"
-
-  export REMOTE_ADDR SERVER_NAME SERVER_PORT REQUEST_METHOD REQUEST_URI SERVER_PROTOCOL \
-         PATH_INFO QUERY_STRING HTTP_CONTENT_LENGTH HTTP_COOKIE
-
-  . "$0" |sed '1{s;^Status: ;HTTP/1.0 ;; t; iHTTP/1.0 200 OK\r
-             }'
-  exit $?
+if [ -z "$REQUEST_METHOD" ]; then
+  # no webserver variables means we are running via inetd / ncat
+  # so use builtin web server
+
+  # Use env from inetd as webserver variables
+  REMOTE_ADDR="${TCPREMOTEIP}"
+  SERVER_NAME="${TCPLOCALIP}"
+  SERVER_PORT="${TCPLOCALPORT}"
+
+  # Wait 2 seconds for request or kill connection through watchdog.
+  # Once Request is received the watchdog will be suspended (killed).
+  # At the end of the loop the watchdog will be restarted to enable
+  # timeout for the subsequent request.
+
+  (sleep $cgilite_timeout && kill $$) & cgilite_watchdog=$!
+  while read REQUEST_METHOD REQUEST_URI SERVER_PROTOCOL; do
+    kill $cgilite_watchdog
+    PATH_INFO="$(HEX_DECODE "${REQUEST_URI%\?*}")"
+    QUERY_STRING="${REQUEST_URI#*\?}"
+    cgilite_headers="$(sed -u '/^\r\?$/q')"
+
+    HTTP_CONTENT_LENGTH="$(HEADER Content-Length |grep -xE '[0-9]+')"
+
+    export REMOTE_ADDR SERVER_NAME SERVER_PORT REQUEST_METHOD REQUEST_URI SERVER_PROTOCOL \
+           PATH_INFO QUERY_STRING HTTP_CONTENT_LENGTH
+
+    # Try to serve multiple requests, provided that script serves a
+    # Content-Length header.
+    # Without Content-Length header, connection will terminate after
+    # script.
+
+    cgilite_status='200 OK'; cgilite_response=''; cgilite_cl="Connection: close${CR}";
+    . "$0" | while read -r l; do case $l in
+      Status:*) cgilite_status="${l#Status: }";;
+      Content-Length:*) cgilite_cl="${l}";;
+      $CR) printf '%s %s\r\n%s\n%s\n\r\n' \
+             'HTTP/1.1' "${cgilite_status%${CR}}" \
+             "$cgilite_response" "${cgilite_cl}"
+           cat
+           [ "${cgilite_cl#Connection}" = "${cgilite_cl}" ]; exit;;
+      *) cgilite_response="$cgilite_response${BR}$l";;
+    esac; done || exit 0;
+    (sleep $cgilite_timeout && kill $$) & cgilite_watchdog=$!
+  done
 fi
 
 if [ "$REQUEST_METHOD" = POST -a "${HTTP_CONTENT_LENGTH:=${CONTENT_LENGTH:=0}}" -gt 0 ]; then
@@ -147,22 +173,38 @@ URL(){
   | tr , %
 }
 
+PATH(){
+  printf %s "$1" \
+  | sed -r 's;^.*$;/&/;; s;/+;/;g;
+            :X;
+            s;^/\.\./;/;; s;/\./;/;g;
+            tX;
+            s;/[^/]+/\.\./;/;;
+            tX;
+            s;^(/.*)/$;\1;'
+}
+
+
 SET_COOKIE(){
+  local expire cookie
   case "$1" in
     ''|0|session) expire='';;
     [+-][0-9]*)   expire="$(date -R -d @$(($(date +%s) + $1)))";;
-    *)           expire="$(date -R -d "$1")";;
+    *)            expire="$(date -R -d "$1")";;
   esac
   cookie="$2"
-  
+
   printf 'Set-Cookie: %s' "$cookie"
-  [ -n "$expire" ] && printf '; Expires=%s' "$expire" 
+  [ -n "$expire" ] && printf '; Expires=%s' "${expire%+????}${expire:+GMT}"
   [ $# -ge 3 ] && shift 2 && printf '; %s' "$@"
   printf '\r\n'
 }
 
 REDIRECT(){
-  printf 'Status: 303 See Other\r\nLocation: %s\r\n\r\n' "$*"
+  printf '%s: %s\r\n' \
+    Status "303 See Other" \
+    Content-Length 0 \
+    Location "$*"
+  printf '\r\n'
   exit 0
 }
-