first commit

TODO

@@ -1,5 +1,4 @@
   * More unit tests
-  * Content-Range support
   * Reverse proxy mode
   * If-Modified-Since support
   * Content-Disposition

shellweb

@@ -5,6 +5,7 @@ set -e
 verbose=false
 auth_enabled=false
 proxy_mode=false
+content_range=(false 0 0 0)
 nc=$(command -v nc.openbsd || command -v nc || { echo nc not found; exit 1; })
 
 if [ `id -u` = 0 ]; then
@@ -193,6 +194,9 @@ cgi() {
 
 # It's okay to call this routine even after senderr(), see $sent
 sendfile() {
+	if [[ ${content_range[0]} == 'true' ]]; then
+		range_handle_verify "$root/$1"
+	fi
 	$sent && return 0
 	test -d "$1" && return 
 	exec 3<"$root/$1" || { senderr 500; return 0; }
@@ -203,9 +207,15 @@ sendfile() {
 	printf "Content-Type: %s\r\n"	"$ct"
 	printf "Content-Length: %u\r\n"	"$sz"
 	printf "Date: %s\r\n"		"$(env LC_ALL=en_US.UTF-8 date)"
-	printf "\r\n"
-	cat <&3
-	exec 3<&-
+	if [[ ${content_range[0]} == 'true' ]]; then
+		printf "Content-Range: bytes ${content_range[1]}-${content_range[2]}/${content_range[3]}\r\n"
+		printf "\r\n"
+		range_sendfile "$root/$1"
+	else
+		printf "\r\n"
+		cat <&3
+		exec 3<&-
+	fi
 }
 
 html_escape() {
@@ -337,7 +347,19 @@ proxy() {
 		fi
 	done | $nc ${proxy_spec%%:*} $proxy_port >&p
 }
-
+
+range_handle_verify() {
+	content_range[3]=$(stat --printf="%s" "$1")
+	if [[ ${content_range[3]} -ne 0 && ${content_range[1]} -ge 0 && ${content_range[2]} -le ${content_range[3]} ]]; then
+		return 0
+	else
+		senderr 400
+	fi
+}
+
+range_sendfile(){
+	dd if="$1" ibs=1 skip=${content_range[1]} count=${content_range[2]} 2> /dev/null
+}
 
 NC_SERVER=$nc
 if $verbose; then
@@ -371,6 +393,11 @@ while true; do
 
 		elif [[ $header == "connection:" && $v2 == $(printf "close\r") ]]; then
 			keep_conn=false
+
+		elif [[ $header == "range:" ]]; then
+			content_range[0]='true'
+			content_range[1]=$(echo "$v3" | awk -F '-' '{print $1}')
+			content_range[2]=$(echo "$v3" | awk -F '-' '{print $2}' | sed 's/[^0-9]*//g')
 
 		elif [[ $header = $(printf "\r\n") && -z $v2 ]]; then
 			# empty line (end of headers)