java support

api/main.go

@@ -41,16 +41,17 @@ func Execute(res http.ResponseWriter, req *http.Request) {
     message.Decode(&inbound)
 
     whitelist := []string{
-        "python", "python2", "python3",
-        "ruby",
-        "javascript", "js", "node",
         "c",
         "cpp", "c++",
-        "go",
-        "r",
-        "php",
         "c#", "csharp", "cs",
+        "go",
+        "java",
         "nasm", "asm",
+        "javascript", "js", "node",
+        "php",
+        "python", "python2", "python3",
+        "r",
+        "ruby",
     }
 
     // check if the supplied language is supported

docker/execute

@@ -50,6 +50,9 @@ case "$lang" in
 "nasm" | "asm")
     bin=executor_nasm
     ;;
+"java")
+    bin=executor_java
+    ;;
 *)
     echo "invalid language"
     exit
@@ -72,6 +75,7 @@ docker run \
     -v $dir/executors/r:/executor_r:ro \
     -v $dir/executors/php:/executor_php:ro \
     -v $dir/executors/nasm:/executor_nasm:ro \
+    -v $dir/executors/java:/executor_java:ro \
     piston \
     runuser \
         -l runner \

docker/executors/java

@@ -0,0 +1,5 @@
+cp /*.code .
+name=$(cat $1 | grep -Eo 'public class ([A-Za-z0-9]+)' | cut -d' ' -f3)
+mv $1 $name.java
+timeout -s KILL 10 javac $name.java
+timeout -s KILL 3 java $name ${@:3}