Detect local changes before a git update. See issue #75.

lib/updater/git_updater.rb

@@ -34,6 +34,14 @@ class GitUpdater < Updater
     %x[git #{repo_directory_arguments()} pull]
   end
 
+  def has_local_changes?
+    %x[git diff --exit-code 2>&1] =~ /diff/ ? true : false
+  end
+
+  def reset_head
+    %x[git #{repo_directory_arguments()} reset --hard HEAD]
+  end
+
   protected
   def repo_directory_arguments
     if @repo_directory

spec/lib/updater/git_updater_spec.rb

@@ -44,4 +44,22 @@ describe GitUpdater do
       @git_updater.update().should === "Already up-to-date."
     end
   end
+
+  describe "#has_local_changes?" do
+    after :each do
+      stub_system_command(@git_updater, /^git diff --exit-code 2>&1/, @stub_value)
+      @git_updater.has_local_changes?.should === @expected
+    end
+
+    it "should return true if there are local changes" do
+      @stub_value = 'diff'
+      @expected = true
+    end
+
+    it "should return false if there are no local changes" do
+      @stub_value = ''
+      @expected = false
+    end
+  end
+
 end

wpscan.rb

@@ -39,6 +39,10 @@ begin
   # Check for updates
   if wpscan_options.update
     unless @updater.nil?
+      if @updater.has_local_changes?
+        puts "#{red('[!]')} Local file changes detected, an update will override local changes, do you want to continue updating? [y/n]"
+        Readline.readline =~ /^y/i ? @updater.reset_head : raise('Update aborted')
+      end
       puts @updater.update()
     else
       puts "Svn / Git not installed, or wpscan has not been installed with one of them."