initHEADmain

1 files changed, 31 insertions, 0 deletions

diff --git a/drasl-heads.cgi b/drasl-heads.cgi
new file mode 100755
index 0000000..a6423b7
--- /dev/null
+++ b/drasl-heads.cgi
@@ -0,0 +1,31 @@
+#!/bin/sh
+
+finish() {
+    echo "Status: $1"
+    echo "Content-type: $2"
+    echo
+    cat -
+    exit
+}
+
+echo "$REQUEST_URI" \
+    | sed -nE "s#$DRASL_HEADS_ROOT/([[:xdigit:]]{32})/([[:digit:]]+)#\1 \2#p" \
+    | {
+        IFS=' '
+        if ! read -r uuid size; then
+            echo "Bad Request" | finish "400 Bad Request" "text/plain"
+        fi
+
+        if test "$size" -gt 64; then
+            echo "Size Limit Exceeded" | finish "403 Forbidden" "text/plain"
+        fi
+
+        image="$(mktemp)"
+        trap 'rm $image' EXIT
+
+        if ./cache.sh ./head.sh "$uuid" "$size" 2>/dev/null > "$image"; then
+            finish "200 OK" "image/png" < "$image"
+        else
+            echo "Not Found" | finish "404 Not Found" "text/plain" 
+        fi
+    }