Added basic hexfile reading that respects r/w perms

app/controllers/memory_controller.rb

@@ -0,0 +1,53 @@
+class MemoryController < ApplicationController
+
+  before_filter :logged_in
+
+  def index
+    current_uuid = current_user.uuid.gsub("-", "")
+    Dir.chdir("/etc/minecraft/redstoner/plugins/JavaUtils/memory/players/#{current_uuid}")
+    psjson = JSON.parse(File.read("projects.json"))
+    @projects = psjson["owns"] + psjson["read"] + psjson["write"]
+    @project_names = @projects.collect{|p| (data = JSON.parse(File.read(File.expand_path("../..")+"/projects/#{p}/project.json")))["name"] + " | #{"own" if data["owner"] == current_uuid}#{"write" if data["write"].include? current_uuid}#{"read" if data["read"].include? current_uuid}"}
+
+  end
+
+  def list
+    render :index
+  end
+
+  def table
+    Dir.chdir("/etc/minecraft/redstoner/plugins/JavaUtils/memory/projects/#{params[:project]}")
+    @data = []
+    Dir.glob('*').reverse.each do |f|
+      File.open(Dir.pwd+"/#{f}") do |file|
+        @data.concat(file.read.unpack("C*").map{|h| h.to_s(16)})
+        if JSON.parse((jf = File.open(Dir.pwd+"/project.json")).read)["read"].include? current_user.uuid.gsub("-","")
+          @can_edit = false
+        else
+          @can_edit = true
+        end
+        jf.close
+      end
+    end
+  end
+
+  def update_memory
+    Dir.chdir("/etc/minecraft/redstoner/plugins/JavaUtils/memory/projects/#{params[:project]}")
+    new_text = ""
+    File.open("#{params[:file]}.hex"){|f| new_text = f.read.unpack("C*").collect{|h| h.to_s(16)}}
+    new_text[params[:mem_id].to_i] = params[:value]
+    File.open("#{params[:file]}.hex", "w") do |f|
+      f.write((new_text.collect{|h| h.to_s.to_i(16)}).pack("C*").force_encoding("UTF-8"))
+    end
+    render nothing: true
+  end
+
+  private
+
+  def logged_in
+    unless current_user
+      flash[:alert] = "Please log in before viewing memory files."
+      redirect_to home_statics_path
+    end
+  end
+end