From 73ef324c993f03b2b8f47418f8b2cf7ff97314c6 Mon Sep 17 00:00:00 2001
From: elijah <elijah@riseup.net>
Date: Fri, 20 Jun 2014 15:42:51 -0700
Subject: moved json macros to provider_base/lib/macros. requires new
 unreleased leap_cli

---
 provider_base/lib/macros/core.rb    | 86 +++++++++++++++++++++++++++++++++
 provider_base/lib/macros/files.rb   | 79 ++++++++++++++++++++++++++++++
 provider_base/lib/macros/haproxy.rb | 68 ++++++++++++++++++++++++++
 provider_base/lib/macros/hosts.rb   | 63 ++++++++++++++++++++++++
 provider_base/lib/macros/nodes.rb   | 88 ++++++++++++++++++++++++++++++++++
 provider_base/lib/macros/secrets.rb | 39 +++++++++++++++
 provider_base/lib/macros/stunnel.rb | 95 +++++++++++++++++++++++++++++++++++++
 7 files changed, 518 insertions(+)
 create mode 100644 provider_base/lib/macros/core.rb
 create mode 100644 provider_base/lib/macros/files.rb
 create mode 100644 provider_base/lib/macros/haproxy.rb
 create mode 100644 provider_base/lib/macros/hosts.rb
 create mode 100644 provider_base/lib/macros/nodes.rb
 create mode 100644 provider_base/lib/macros/secrets.rb
 create mode 100644 provider_base/lib/macros/stunnel.rb

(limited to 'provider_base/lib/macros')

diff --git a/provider_base/lib/macros/core.rb b/provider_base/lib/macros/core.rb
new file mode 100644
index 00000000..d4d9171f
--- /dev/null
+++ b/provider_base/lib/macros/core.rb
@@ -0,0 +1,86 @@
+# encoding: utf-8
+
+module LeapCli
+  module Macro
+
+    #
+    # return a fingerprint for a x509 certificate
+    #
+    def fingerprint(filename)
+      "SHA256: " + X509.fingerprint("SHA256", Path.named_path(filename))
+    end
+
+    #
+    # Creates a hash from the ssh key info in users directory, for use in
+    # updating authorized_keys file. Additionally, the 'monitor' public key is
+    # included, which is used by the monitor nodes to run particular commands
+    # remotely.
+    #
+    def authorized_keys
+      hash = {}
+      keys = Dir.glob(Path.named_path([:user_ssh, '*']))
+      keys.sort.each do |keyfile|
+        ssh_type, ssh_key = File.read(keyfile, :encoding => 'UTF-8').strip.split(" ")
+        name = File.basename(File.dirname(keyfile))
+        hash[name] = {
+          "type" => ssh_type,
+          "key" => ssh_key
+        }
+      end
+      ssh_type, ssh_key = File.read(Path.named_path(:monitor_pub_key), :encoding => 'UTF-8').strip.split(" ")
+      hash[Leap::Platform.monitor_username] = {
+        "type" => ssh_type,
+        "key" => ssh_key
+      }
+      hash
+    end
+
+    def assert(assertion)
+      if instance_eval(assertion)
+        true
+      else
+        raise AssertionFailed.new(assertion)
+      end
+    end
+
+    #
+    # applies a JSON partial to this node
+    #
+    def apply_partial(partial_path)
+      manager.partials(partial_path).each do |partial_data|
+        self.deep_merge!(partial_data)
+      end
+    end
+
+    #
+    # If at first you don't succeed, then it is time to give up.
+    #
+    # try{} returns nil if anything in the block throws an exception.
+    #
+    # You can wrap something that might fail in `try`, like so.
+    #
+    #   "= try{ nodes[:services => 'tor'].first.ip_address } "
+    #
+    def try(&block)
+      yield
+    rescue NoMethodError
+      nil
+    end
+
+    protected
+
+    #
+    # returns a node list, if argument is not already one
+    #
+    def listify(node_list)
+      if node_list.is_a? Config::ObjectList
+        node_list
+      elsif node_list.is_a? Config::Object
+        Config::ObjectList.new(node_list)
+      else
+        raise ArgumentError, 'argument must be a node or node list, not a `%s`' % node_list.class, caller
+      end
+    end
+
+  end
+end
diff --git a/provider_base/lib/macros/files.rb b/provider_base/lib/macros/files.rb
new file mode 100644
index 00000000..0a491325
--- /dev/null
+++ b/provider_base/lib/macros/files.rb
@@ -0,0 +1,79 @@
+# encoding: utf-8
+
+##
+## FILES
+##
+
+module LeapCli
+  module Macro
+
+    #
+    # inserts the contents of a file
+    #
+    def file(filename, options={})
+      if filename.is_a? Symbol
+        filename = [filename, @node.name]
+      end
+      filepath = Path.find_file(filename)
+      if filepath
+        if filepath =~ /\.erb$/
+          ERB.new(File.read(filepath, :encoding => 'UTF-8'), nil, '%<>').result(binding)
+        else
+          File.read(filepath, :encoding => 'UTF-8')
+        end
+      else
+        raise FileMissing.new(Path.named_path(filename), options)
+        ""
+      end
+    end
+
+    #
+    # like #file, but allow missing files
+    #
+    def try_file(filename)
+      return file(filename)
+    rescue FileMissing
+      return nil
+    end
+
+    #
+    # returns what the file path will be, once the file is rsynced to the server.
+    # an internal list of discovered file paths is saved, in order to rsync these files when needed.
+    #
+    # notes:
+    #
+    # * argument 'path' is relative to Path.provider/files or Path.provider_base/files
+    # * the path returned by this method is absolute
+    # * the path stored for use later by rsync is relative to Path.provider
+    # * if the path does not exist locally, but exists in provider_base, then the default file from
+    #   provider_base is copied locally. this is required for rsync to work correctly.
+    #
+    def file_path(path)
+      if path.is_a? Symbol
+        path = [path, @node.name]
+      end
+      actual_path = Path.find_file(path)
+      if actual_path.nil?
+        Util::log 2, :skipping, "file_path(\"#{path}\") because there is no such file."
+        nil
+      else
+        if actual_path =~ /^#{Regexp.escape(Path.provider_base)}/
+          # if file is under Path.provider_base, we must copy the default file to
+          # to Path.provider in order for rsync to be able to sync the file.
+          local_provider_path = actual_path.sub(/^#{Regexp.escape(Path.provider_base)}/, Path.provider)
+          FileUtils.mkdir_p File.dirname(local_provider_path), :mode => 0700
+          FileUtils.install actual_path, local_provider_path, :mode => 0600
+          Util.log :created, Path.relative_path(local_provider_path)
+          actual_path = local_provider_path
+        end
+        if File.directory?(actual_path) && actual_path !~ /\/$/
+          actual_path += '/' # ensure directories end with /, important for building rsync command
+        end
+        relative_path = Path.relative_path(actual_path)
+        @node.file_paths << relative_path
+        @node.manager.provider.hiera_sync_destination + '/' + relative_path
+      end
+    end
+
+  end
+end
\ No newline at end of file
diff --git a/provider_base/lib/macros/haproxy.rb b/provider_base/lib/macros/haproxy.rb
new file mode 100644
index 00000000..db0d4db8
--- /dev/null
+++ b/provider_base/lib/macros/haproxy.rb
@@ -0,0 +1,68 @@
+# encoding: utf-8
+
+##
+## HAPROXY
+##
+
+module LeapCli
+  module Macro
+
+    #
+    # creates a hash suitable for configuring haproxy. the key is the node name of the server we are proxying to.
+    #
+    # * node_list - a hash of nodes for the haproxy servers
+    # * stunnel_client - contains the mappings to local ports for each server node.
+    # * non_stunnel_port - in case self is included in node_list, the port to connect to.
+    #
+    # 1000 weight is used for nodes in the same location.
+    # 100 otherwise.
+    #
+    def haproxy_servers(node_list, stunnel_clients, non_stunnel_port=nil)
+      default_weight = 10
+      local_weight = 100
+
+      # record the hosts_file
+      hostnames(node_list)
+
+      # create a simple map for node name -> local stunnel accept port
+      accept_ports = stunnel_clients.inject({}) do |hsh, stunnel_entry|
+        name = stunnel_entry.first.sub /_[0-9]+$/, ''
+        hsh[name] = stunnel_entry.last['accept_port']
+        hsh
+      end
+
+      # if one the nodes in the node list is ourself, then there will not be a stunnel to it,
+      # but we need to include it anyway in the haproxy config.
+      if node_list[self.name] && non_stunnel_port
+        accept_ports[self.name] = non_stunnel_port
+      end
+
+      # create the first pass of the servers hash
+      servers = node_list.values.inject(Config::ObjectList.new) do |hsh, node|
+        weight = default_weight
+        if self['location'] && node['location']
+          if self.location['name'] == node.location['name']
+            weight = local_weight
+          end
+        end
+        hsh[node.name] = Config::Object[
+          'backup', false,
+          'host', 'localhost',
+          'port', accept_ports[node.name] || 0,
+          'weight', weight
+        ]
+        hsh
+      end
+
+      # if there are some local servers, make the others backup
+      if servers.detect{|k,v| v.weight == local_weight}
+        servers.each do |k,server|
+          server['backup'] = server['weight'] == default_weight
+        end
+      end
+
+      return servers
+    end
+
+  end
+end
\ No newline at end of file
diff --git a/provider_base/lib/macros/hosts.rb b/provider_base/lib/macros/hosts.rb
new file mode 100644
index 00000000..8a4058a5
--- /dev/null
+++ b/provider_base/lib/macros/hosts.rb
@@ -0,0 +1,63 @@
+# encoding: utf-8
+
+module LeapCli
+  module Macro
+
+    ##
+    ## HOSTS
+    ##
+
+    #
+    # records the list of hosts that are encountered for this node
+    #
+    def hostnames(nodes)
+      @referenced_nodes ||= Config::ObjectList.new
+      nodes = listify(nodes)
+      nodes.each_node do |node|
+        @referenced_nodes[node.name] ||= node
+      end
+      return nodes.values.collect {|node| node.domain.name}
+    end
+
+    #
+    # Generates entries needed for updating /etc/hosts on a node (as a hash).
+    #
+    # Argument `nodes` can be nil or a list of nodes. If nil, only include the
+    # IPs of the other nodes this @node as has encountered (plus all mx nodes).
+    #
+    # Also, for virtual machines, we use the local address if this @node is in
+    # the same location as the node in question.
+    #
+    # We include the ssh public key for each host, so that the hash can also
+    # be used to generate the /etc/ssh/known_hosts
+    #
+    def hosts_file(nodes=nil)
+      if nodes.nil?
+        if @referenced_nodes && @referenced_nodes.any?
+          nodes = @referenced_nodes
+          nodes = nodes.merge(nodes_like_me[:services => 'mx'])  # all nodes always need to communicate with mx nodes.
+        end
+      end
+      return {} unless nodes
+      hosts = {}
+      my_location = @node['location'] ? @node['location']['name'] : nil
+      nodes.each_node do |node|
+        hosts[node.name] = {'ip_address' => node.ip_address, 'domain_internal' => node.domain.internal, 'domain_full' => node.domain.full}
+        node_location = node['location'] ? node['location']['name'] : nil
+        if my_location == node_location
+          if facts = @node.manager.facts[node.name]
+            if facts['ec2_public_ipv4']
+              hosts[node.name]['ip_address'] = facts['ec2_public_ipv4']
+            end
+          end
+        end
+        host_pub_key   = Util::read_file([:node_ssh_pub_key,node.name])
+        if host_pub_key
+          hosts[node.name]['host_pub_key'] = host_pub_key
+        end
+      end
+      hosts
+    end
+
+  end
+end
\ No newline at end of file
diff --git a/provider_base/lib/macros/nodes.rb b/provider_base/lib/macros/nodes.rb
new file mode 100644
index 00000000..0c6668a0
--- /dev/null
+++ b/provider_base/lib/macros/nodes.rb
@@ -0,0 +1,88 @@
+# encoding: utf-8
+
+##
+## node related macros
+##
+
+module LeapCli
+  module Macro
+
+    #
+    # the list of all the nodes
+    #
+    def nodes
+      global.nodes
+    end
+
+    #
+    # grab an environment appropriate provider
+    #
+    def provider
+      global.env(@node.environment).provider
+    end
+
+    #
+    # returns a list of nodes that match the same environment
+    #
+    # if @node.environment is not set, we return other nodes
+    # where environment is not set.
+    #
+    def nodes_like_me
+      nodes[:environment => @node.environment]
+    end
+
+    #
+    # returns a list of nodes that match the location name
+    # and environment of @node.
+    #
+    def nodes_near_me
+      if @node['location'] && @node['location']['name']
+        nodes_like_me['location.name' => @node.location.name]
+      else
+        nodes_like_me['location' => nil]
+      end
+    end
+
+    #
+    #
+    # picks a node out from the node list in such a way that:
+    #
+    # (1) which nodes picked which nodes is saved in secrets.json
+    # (2) when other nodes call this macro with the same node list, they are guaranteed to get a different node
+    # (3) if all the nodes in the pick_node list have been picked, remaining nodes are distributed randomly.
+    #
+    # if the node_list is empty, an exception is raised.
+    # if node_list size is 1, then that node is returned and nothing is
+    # memorized via the secrets.json file.
+    #
+    # `label` is needed to distinguish between pools of nodes for different purposes.
+    #
+    # TODO: more evenly balance after all the nodes have been picked.
+    #
+    def pick_node(label, node_list)
+      if node_list.any?
+        if node_list.size == 1
+          return node_list.values.first
+        else
+          secrets_key = "pick_node(:#{label},#{node_list.keys.sort.join(',')})"
+          secrets_value = @manager.secrets.retrieve(secrets_key, @node.environment) || {}
+          secrets_value[@node.name] ||= begin
+            node_to_pick = nil
+            node_list.each_node do |node|
+              next if secrets_value.values.include?(node.name)
+              node_to_pick = node.name
+            end
+            node_to_pick ||= secrets_value.values.shuffle.first # all picked already, so pick a random one.
+            node_to_pick
+          end
+          picked_node_name = secrets_value[@node.name]
+          @manager.secrets.set(secrets_key, secrets_value, @node.environment)
+          return node_list[picked_node_name]
+        end
+      else
+        raise ArgumentError.new('pick_node(node_list): node_list cannot be empty')
+      end
+    end
+
+  end
+end
\ No newline at end of file
diff --git a/provider_base/lib/macros/secrets.rb b/provider_base/lib/macros/secrets.rb
new file mode 100644
index 00000000..51bf3971
--- /dev/null
+++ b/provider_base/lib/macros/secrets.rb
@@ -0,0 +1,39 @@
+# encoding: utf-8
+
+require 'base32'
+
+module LeapCli
+  module Macro
+
+    #
+    # inserts a named secret, generating it if needed.
+    #
+    # manager.export_secrets should be called later to capture any newly generated secrets.
+    #
+    # +length+ is the character length of the generated password.
+    #
+    def secret(name, length=32)
+      @manager.secrets.set(name, Util::Secret.generate(length), @node[:environment])
+    end
+
+    # inserts a base32 encoded secret
+    def base32_secret(name, length=20)
+      @manager.secrets.set(name, Base32.encode(Util::Secret.generate(length)), @node[:environment])
+    end
+
+    # Picks a random obfsproxy port from given range
+    def rand_range(name, range)
+      @manager.secrets.set(name, rand(range), @node[:environment])
+    end
+
+    #
+    # inserts an hexidecimal secret string, generating it if needed.
+    #
+    # +bit_length+ is the bits in the secret, (ie length of resulting hex string will be bit_length/4)
+    #
+    def hex_secret(name, bit_length=128)
+      @manager.secrets.set(name, Util::Secret.generate_hex(bit_length), @node[:environment])
+    end
+
+  end
+end
\ No newline at end of file
diff --git a/provider_base/lib/macros/stunnel.rb b/provider_base/lib/macros/stunnel.rb
new file mode 100644
index 00000000..f16308c7
--- /dev/null
+++ b/provider_base/lib/macros/stunnel.rb
@@ -0,0 +1,95 @@
+##
+## STUNNEL
+##
+
+#
+# About stunnel
+# --------------------------
+#
+# The network looks like this:
+#
+#   From the client's perspective:
+#
+#   |------- stunnel client --------------|    |---------- stunnel server -----------------------|
+#    consumer app -> localhost:accept_port  ->  connect:connect_port -> ??
+#
+#   From the server's perspective:
+#
+#   |------- stunnel client --------------|    |---------- stunnel server -----------------------|
+#                                       ??  ->  *:accept_port -> localhost:connect_port -> service
+#
+
+module LeapCli
+  module Macro
+
+    #
+    # stunnel configuration for the client side.
+    #
+    # +node_list+ is a ObjectList of nodes running stunnel servers.
+    #
+    # +port+ is the real port of the ultimate service running on the servers
+    # that the client wants to connect to.
+    #
+    # * accept_port is the port on localhost to which local clients
+    #   can connect. it is auto generated serially.
+    #
+    # * connect_port is the port on the stunnel server to connect to.
+    #   it is auto generated from the +port+ argument.
+    #
+    # generates an entry appropriate to be passed directly to
+    # create_resources(stunnel::service, hiera('..'), defaults)
+    #
+    # local ports are automatically generated, starting at 4000
+    # and incrementing in sorted order (by node name).
+    #
+    def stunnel_client(node_list, port, options={})
+      @next_stunnel_port ||= 4000
+      node_list = listify(node_list)
+      hostnames(node_list) # record the hosts
+      result = Config::ObjectList.new
+      node_list.each_node do |node|
+        if node.name != self.name || options[:include_self]
+          result["#{node.name}_#{port}"] = Config::Object[
+            'accept_port', @next_stunnel_port,
+            'connect', node.domain.internal,
+            'connect_port', stunnel_port(port),
+            'original_port', port
+          ]
+          @next_stunnel_port += 1
+        end
+      end
+      result
+    end
+
+    #
+    # generates a stunnel server entry.
+    #
+    # +port+ is the real port targeted service.
+    #
+    # * `accept_port` is the publicly bound port
+    # * `connect_port` is the port that the local service is running on.
+    #
+    def stunnel_server(port)
+      {
+        "accept_port" => stunnel_port(port),
+        "connect_port" => port
+      }
+    end
+
+    private
+
+    #
+    # maps a real port to a stunnel port (used as the connect_port in the client config
+    # and the accept_port in the server config)
+    #
+    def stunnel_port(port)
+      port = port.to_i
+      if port < 50000
+        return port + 10000
+      else
+        return port - 10000
+      end
+    end
+
+  end
+end
\ No newline at end of file
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