Explicitly define LF or CRLF line endings for hosts and guests when defining the hosts file content.

Author: seth-reeser

Gemfile

@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 group :development do
-  gem 'vagrant', :git => 'git://github.com/mitchellh/vagrant.git', :tag => 'v1.6.2'
+  gem 'vagrant', :git => 'git://github.com/mitchellh/vagrant.git', :tag => 'v1.9.4'
 end
 
 group :plugins do

README.md

@@ -6,7 +6,7 @@ Vagrant Host Manager
 [![Gem](https://img.shields.io/gem/dtv/vagrant-hostmanager.svg)](https://rubygems.org/gems/vagrant-hostmanager)
 [![Twitter](https://img.shields.io/twitter/url/https/github.com/devopsgroup-io/vagrant-hostmanager.svg?style=social)](https://twitter.com/intent/tweet?text=Check%20out%20this%20awesome%20Vagrant%20plugin%21&url=https%3A%2F%2Fgithub.com%devopsgroup-io%2Fvagrant-hostmanager&hashtags=vagrant%hostmanager&original_referer=)
 
-`vagrant-hostmanager` is a plugin that manages the `hosts` file on guest machines (and optionally the host). Its goal is to enable resolution of multi-machine environments deployed with a cloud provider where IP addresses are not known in advance.
+`vagrant-hostmanager` is a plugin that manages the `/etc/hosts` file on guest machines (and optionally the host). Its goal is to enable resolution of multi-machine environments deployed with a cloud provider where IP addresses are not known in advance.
 
 Installation
 ------------
@@ -16,22 +16,22 @@ Install the plugin following the typical Vagrant 1.1 procedure:
 
 Usage
 -----
-To update the `hosts` file on each active machine, run the following
+To update the `/etc/hosts` file on each active machine, run the following
 command:
 
     $ vagrant hostmanager
 
 The plugin hooks into the `vagrant up` and `vagrant destroy` commands
 automatically.
 When a machine enters or exits the running state , all active
-machines with the same provider will have their `hosts` file updated
+machines with the same provider will have their `/etc/hosts` file updated
 accordingly. Set the `hostmanager.enabled` attribute to `true` in the
 Vagrantfile to activate this behavior.
 
-To update the host's `hosts` file, set the `hostmanager.manage_host`
+To update the host's `/etc/hosts` file, set the `hostmanager.manage_host`
 attribute to `true`.
 
-To update the guests' `hosts` file, set the `hostmanager.manage_guest`
+To update the guests' `/etc/hosts` file, set the `hostmanager.manage_guest`
 attribute to `true`.
 
 A machine's IP address is defined by either the static IP for a private
@@ -90,14 +90,14 @@ config.vm.provision :hostmanager
 Custom IP resolver
 ------------------
 
-You can customize how vagrant-hostmanager resolves IP address
-for each machine. This might be handy in the case of the AWS provider,
-where the host name is stored in the ssh_info hash of each machine.
-This causes a generation of an invalid `hosts` file.
+You can customize way, how host manager resolves IP address
+for each machine. This might be handy in case of aws provider,
+where host name is stored in ssh_info hash of each machine.
+This causes generation of invalid /etc/hosts file.
 
-A custom IP resolver gives you the oportunity to calculate IP address
-for each machine by yourself, giving you access to the machine that is
-updating `hosts`. For example:
+Custom IP resolver gives you oportunity to calculate IP address
+for each machine by yourself, giving You also access to the machine that is
+updating /etc/hosts. For example:
 
 ```ruby
 config.hostmanager.ip_resolver = proc do |vm, resolving_vm|
@@ -188,11 +188,12 @@ To contribute, fork then clone the repository, and then the following:
 
 **Developing**
 
-1. Install [Bundler](http://bundler.io/)
-2. Currently the Bundler version is locked to 1.6.9, please install this version.
-    * `sudo gem install bundler -v '1.6.9'`
+1. Ideally, install the version of Vagrant as defined in the `Gemfile`
+1. Install [Ruby](https://www.ruby-lang.org/en/documentation/installation/)
+2. Currently the Bundler version is locked to 1.14.6, please install this version.
+    * `gem install bundler -v '1.14.6'`
 3. Then install vagrant-hostmanager dependancies:
-    * `bundle _1.6.9_ install`
+    * `bundle _1.14.6_ install`
 
 **Testing**
 

lib/vagrant-hostmanager/hosts_file/updater.rb

@@ -18,25 +18,28 @@ def update_guest(machine)
           return unless machine.communicate.ready?
 
           if (machine.communicate.test("uname -s | grep SunOS"))
-            realhostfile = '/etc/inet/hosts'
+            realhostfile = "/etc/inet/hosts"
+            line_endings = "lf"
           elsif (machine.communicate.test("test -d $Env:SystemRoot"))
             windir = ""
             machine.communicate.execute("echo %SYSTEMROOT%", {:shell => :cmd}) do |type, contents|
               windir << contents.gsub("\r\n", '') if type == :stdout
             end
             realhostfile = "#{windir}\\System32\\drivers\\etc\\hosts"
+            line_endings = "crlf"
           else
-            realhostfile = '/etc/hosts'
+            realhostfile = "/etc/hosts"
+            line_endings = "lf"
           end
+
           # download and modify file with Vagrant-managed entries
           file = @global_env.tmp_path.join("hosts.#{machine.name}")
           machine.communicate.download(realhostfile, file)
 
           @logger.debug("file is: #{file.to_s}")
           @logger.debug("class of file is: #{file.class}")
 
-          if update_file(file, machine, false)
-
+          if update_file(file, machine, false, line_endings)
             # upload modified file and remove temporary file
             machine.communicate.upload(file.to_s, '/tmp/hosts')
             if windir
@@ -57,38 +60,40 @@ def update_host
             class << self
               include WindowsSupport unless include? WindowsSupport
             end
-
             hosts_location = "#{ENV['WINDIR']}\\System32\\drivers\\etc\\hosts"
             copy_proc = Proc.new { windows_copy_file(file, hosts_location) }
+            line_endings = "crlf"
           else
             hosts_location = '/etc/hosts'
             copy_proc = Proc.new { `[ -w #{hosts_location} ] && cat #{file} > #{hosts_location} || sudo cp #{file} #{hosts_location}` }
+            line_endings = "lf"
           end
 
           FileUtils.cp(hosts_location, file)
-          if update_file(file)
+
+          if update_file(file, nil, true, line_endings)
             copy_proc.call
           end
         end
 
         private
 
-        def update_file(file, resolving_machine = nil, include_id = true)
+        def update_file(file, resolving_machine = nil, include_id = true, line_endings)
           file = Pathname.new(file)
           old_file_content = file.read
-          new_file_content = update_content(old_file_content, resolving_machine, include_id)
+          new_file_content = update_content(old_file_content, resolving_machine, include_id, line_endings)
           file.open('wb') { |io| io.write(new_file_content) }
           old_file_content != new_file_content
         end
 
-        def update_content(file_content, resolving_machine, include_id)
+        def update_content(file_content, resolving_machine, include_id, line_endings)
           id = include_id ? " id: #{read_or_create_id}" : ""
           header = "## vagrant-hostmanager-start#{id}\n"
           footer = "## vagrant-hostmanager-end\n"
           body = get_machines
             .map { |machine| get_hosts_file_entry(machine, resolving_machine) }
             .join
-          get_new_content(header, footer, body, file_content)
+          get_new_content(header, footer, body, file_content, line_endings)
         end
 
         def get_hosts_file_entry(machine, resolving_machine)
@@ -137,7 +142,7 @@ def get_machines
             .reject(&:nil?)
         end
 
-        def get_new_content(header, footer, body, old_content)
+        def get_new_content(header, footer, body, old_content, line_endings)
           if body.empty?
             block = "\n"
           else
@@ -148,7 +153,14 @@ def get_new_content(header, footer, body, old_content)
           footer_pattern = Regexp.quote(footer)
           pattern = Regexp.new("\n*#{header_pattern}.*?#{footer_pattern}\n*", Regexp::MULTILINE)
           # Replace existing block or append
-          old_content.match(pattern) ? old_content.sub(pattern, block) : old_content.rstrip + block
+          content = old_content.match(pattern) ? old_content.sub(pattern, block) : old_content.rstrip + block
+          if line_endings == "crlf"
+            content.encode(content.encoding, :universal_encoding => true).encode(content.encoding, :crlf_newline => true)
+          elsif line_endings == "lf"
+            content.encode(content.encoding, :universal_encoding => true)
+          else
+            content.encode(content.encoding, :universal_encoding => true)
+          end
         end
 
         def read_or_create_id

locales/en.yml

@@ -1,10 +1,10 @@
 en:
   vagrant_hostmanager:
     action:
-      update_guests: "Updating /etc/hosts file on active guest machines..."
-      update_guest: "[%{name}] Updating /etc/hosts file..."
-      update_host: "Updating /etc/hosts file on host machine (password may be required)..."
+      update_guests: "[vagrant-hostmanager:guests] Updating hosts file on active guest virtual machines..."
+      update_guest: "[vagrant-hostmanager:guest] Updating hosts file on the virtual machine %{name}..."
+      update_host: "[vagrant-hostmanager:host] Updating hosts file on your workstation (password may be required)..."
     config:
-      not_a_bool: "A value for %{config_key} can only be true or false, not type '%{value}'"
-      not_an_array_or_string: "A value for %{config_key} must be an Array or String, not type '%{is_class}'"
-      not_a_proc: "A value for %{config_key} must be a Proc, not type '%{is_class}'"
+      not_a_bool: "[vagrant-hostmanager:config:error] A value for %{config_key} can only be true or false, not type '%{value}'"
+      not_an_array_or_string: "[vagrant-hostmanager:config:error] A value for %{config_key} must be an Array or String, not type '%{is_class}'"
+      not_a_proc: "[vagrant-hostmanager:config:error] A value for %{config_key} must be a Proc, not type '%{is_class}'"