1 files changed, 45 insertions, 13 deletions
diff --git a/app/models/compiler.rb b/app/models/compiler.rb
index 7cf7152..c25bf2e 100644
--- a/app/models/compiler.rb
+++ b/app/models/compiler.rb
@@ -1,19 +1,51 @@
+require "shellwords"
+
 class Compiler < ApplicationRecord
-  def _run!(snippet)
-    raise NotImplementedError
+  def to_s
+    "#{language} #{version}"
+  end
+
+  def run_lazy(snippet)
+    r = Result.prepare_execution(self, snippet)
+    ExecuteJob.perform_later(self, snippet, r)
+    r
   end
 
-  if Rails.env.development?
-    require "shellwords"
-    def run!(snippet)
-      if self.language == "ruby" && self.version == "!!unsafe!!"
-        out = `ruby -e #{Shellwords.escape(snippet.code)}`
-        Result.create(snippet: snippet, compiler: self, output: out)
-      else
-        _run!(snippet)
-      end
+  def run(snippet)
+    r = Result.prepare_execution(self, snippet)
+    run_body(snippet, r)
+    r
+  end
+
+  private
+  def run_body(snippet, r)
+    baseroot = Rails.root.join("playground/base").to_s
+    env_overlay = Rails.root.join("playground").join(language).join(version).to_s
+    sf = Tempfile.open
+    sf.write(snippet.code)
+    sf.fsync
+    of = Tempfile.open
+    pid = spawn("/usr/bin/sudo", Rails.root.join("sandbox/sandbox").to_s, baseroot, env_overlay, sf.path, *Shellwords.split(command_line),
+                in: :close, # TODO
+                out: of,
+                err: STDERR)
+    _, pst = Process.waitpid2(pid)
+    if pst.signaled? || pst.exitstatus > 0
+      result = :errored
+      status = -1
+    else
+      result = :success
+      status = 0
     end
-  else
-    alias run! _run!
+
+    of.rewind
+    r.update!(output: of.read,
+              status: status,
+              result: result)
+  rescue
+    r.update!(status: -1, result: :errored)
+  ensure
+    sf.close if sf
+    of.close if of
   end
 end