1 files changed, 94 insertions, 0 deletions
diff --git a/lib/mauve/sender.rb b/lib/mauve/sender.rb
new file mode 100644
index 0000000..f27efe5
--- /dev/null
+++ b/lib/mauve/sender.rb
@@ -0,0 +1,94 @@
+# encoding: UTF-8
+require 'ipaddr'
+require 'resolv'
+require 'socket'
+require 'mauve/mauve_time'
+
+module Mauve 
+  class Sender
+    DEFAULT_PORT = 32741
+    include Resolv::DNS::Resource::IN
+    
+    def initialize(*destinations)
+      destinations = destinations.flatten
+      
+      destinations = begin
+        File.read("/etc/mauvealert/mauvesend.destination").split(/\s+/)
+      rescue Errno::ENOENT => notfound
+        []
+      end if destinations.empty?
+      
+      if !destinations || destinations.empty?
+        raise ArgumentError.new("No destinations specified, and could not read any destinations from /etc/mauvealert/mauvesend.destination")
+      end
+    
+      @destinations = destinations.map do |spec|
+        next_spec = begin
+          # FIXME: for IPv6
+          port = spec.split(":")[1] || DEFAULT_PORT
+          IPAddr.new(spec.split(":")[0])
+          ["#{spec}:#{port}"]
+        rescue ArgumentError => not_an_ip_address
+          Resolv::DNS.open do |dns|
+            srv_spec = spec[0] == ?_ ? spec : "_mauvealert._udp.#{spec}"
+            list = dns.getresources(srv_spec, SRV).map do |srv|
+              srv.target.to_s + ":#{srv.port}"
+            end
+            list = [spec] if list.empty?
+            list.map do |spec2|
+              spec2_addr, spec2_port = spec2.split(":")
+              spec2_port ||= DEFAULT_PORT
+              dns.getresources(spec2_addr, A).map do |a|
+                "#{a.address}:#{spec2_port}"
+              end
+            end
+          end
+        end.flatten
+
+        error "Can't resolve destination #{spec}" if next_spec.empty?
+
+        next_spec
+      end.
+      flatten.
+      uniq
+    end
+    
+    def send(update, verbose=0)
+
+      #
+      # Must have a source, so default to hostname if user doesn't care 
+      update.source ||= `hostname -f`.chomp
+      
+      #
+      # Make sure all alerts default to "-r now"
+      #
+      update.alert.each do |alert|
+        next if alert.raise_time || alert.clear_time
+        alert.raise_time = MauveTime.now.to_i
+      end
+     
+      #
+      # Make sure we set the transmission time
+      #
+      update.transmission_time = MauveTime.now.to_i 
+
+      data = update.serialize_to_string
+
+
+      if verbose == 1
+        print "#{update.transmission_id}\n"
+      elsif verbose >= 2
+        print "Sending #{update.inspect.chomp} to #{@destinations.join(", ")}\n"
+      end
+
+      @destinations.each do |spec|
+        UDPSocket.open do |sock|
+          ip = spec.split(":")[0]
+          port = spec.split(":")[1].to_i
+          sock.send(data, 0, ip, port)
+        end
+      end
+    end
+  end
+end
+