refactored the salmon models and the xml, added a pending spec to strip '='

lib/diaspora/encryptable.rb

 module Diaspora
   module Encryptable
     
-    LAST_FALLBACK_TIME = "Sept 15 2011 17:00 UTC "
+    LAST_FALLBACK_TIME = "Sept 19 2011 17:00 UTC "
     # Check that signature is a correct signature of #signable_string by person
     #
     # @param [String] signature The signature to be verified.

lib/postzord/receiver/private.rb

@@ -13,7 +13,7 @@ module Postzord
         @user_person = @user.person
         @salmon_xml = opts[:salmon_xml]
 
-        @sender = opts[:person] || Webfinger.new(self.salmon.author_email).fetch
+        @sender = opts[:person] || Webfinger.new(self.salmon.author_id).fetch
         @author = @sender
 
         @object = opts[:object]
@@ -23,7 +23,7 @@ module Postzord
         if @sender && self.salmon.verified_for_key?(@sender.public_key)
           parse_and_receive(salmon.parsed_data)
         else
-          Rails.logger.info("event=receive status=abort recipient=#{@user.diaspora_handle} sender=#{@salmon.author_email} reason='not_verified for key'")
+          Rails.logger.info("event=receive status=abort recipient=#{@user.diaspora_handle} sender=#{@salmon.author_id} reason='not_verified for key'")
           nil
         end
       end

lib/postzord/receiver/public.rb

@@ -9,7 +9,7 @@ module Postzord
 
       def initialize(xml)
         @salmon = Salmon::Slap.from_xml(xml) 
-        @author = Webfinger.new(@salmon.author_email).fetch
+        @author = Webfinger.new(@salmon.author_id).fetch
       end
 
       # @return [Boolean]

lib/salmon/encrypted_slap.rb

@@ -10,11 +10,21 @@ module Salmon
     def header(person)
       <<XML
         <encrypted_header>
-          #{person.encrypt("<decrypted_header>#{plaintext_header}</decrypted_header>")}
+          #{person.encrypt(plaintext_header)}
         </encrypted_header>
 XML
     end
 
+    def plaintext_header
+      header =<<HEADER
+<decrypted_header>
+    <iv>#{iv}</iv>
+    <aes_key>#{aes_key}</aes_key>
+    <author_id>#{@author.diaspora_handle}</author_id>
+</decrypted_header>
+HEADER
+    end
+
     # @return [String, Boolean] False if RSAError; XML if no error
     def xml_for(person)
       begin
@@ -24,12 +34,21 @@ XML
         false
       end
     end
-
+    
+    # Takes in a doc of the header and sets the author id
+    # returns an empty hash
+    # @return [Hash]
+    def process_header(doc)
+      self.author_id   = doc.search('author_id').text
+      self.aes_key     = doc.search('aes_key').text
+      self.iv          = doc.search('iv').text
+    end
+    
     # Decrypts an encrypted magic sig envelope
     # @param key_hash [Hash] Contains 'key' (aes) and 'iv' values
     # @param user [User]
-    def parse_data(key_hash, user)
-      user.aes_decrypt(super, key_hash)
+    def parse_data(user)
+      user.aes_decrypt(super, {'key' => self.aes_key, 'iv' => self.iv})
     end
 
     # Decrypts and parses out the salmon header

lib/salmon/magic_sig_envelope.rb

@@ -10,22 +10,21 @@ module Salmon
     # @return [MagicSigEnvelope]
     def self.parse(doc)
       env = self.new
-      ns = {'me'=>'http://salmon-protocol.org/ns/magic-env'}
-      env.encoding = doc.search('//me:env/me:encoding', ns).text.strip
+      env.encoding = doc.search('//me:env/me:encoding').text.strip
 
       if env.encoding != 'base64url'
         raise ArgumentError, "Magic Signature data must be encoded with base64url, was #{env.encoding}"
       end
 
-      env.data =  doc.search('//me:env/me:data', ns).text
-      env.alg = doc.search('//me:env/me:alg', ns).text.strip
+      env.data =  doc.search('//me:env/me:data').text
+      env.alg = doc.search('//me:env/me:alg').text.strip
 
       unless 'RSA-SHA256' == env.alg
         raise ArgumentError, "Magic Signature data must be signed with RSA-SHA256, was #{env.alg}"
       end
 
-      env.sig =  doc.search('//me:env/me:sig', ns).text
-      env.data_type = doc.search('//me:env/me:data', ns).first['type'].strip
+      env.sig =  doc.search('//me:env/me:sig').text
+      env.data_type = doc.search('//me:env/me:data').first['type'].strip
 
       env
     end
@@ -54,7 +53,7 @@ module Salmon
     # @return [String]
     def to_xml
       <<ENTRY
-<me:env xmlns:me="http://salmon-protocol.org/ns/magic-env">
+<me:env>
   <me:data type='#{@data_type}'>#{@data}</me:data>
   <me:encoding>#{@encoding}</me:encoding>
   <me:alg>#{@alg}</me:alg>

lib/salmon/slap.rb

@@ -4,7 +4,7 @@
 
 module Salmon
  class Slap
-    attr_accessor :magic_sig, :author, :author_email, :parsed_data
+    attr_accessor :magic_sig, :author, :author_id, :parsed_data
     attr_accessor :aes_key, :iv
 
     delegate :sig, :data_type, :to => :magic_sig
@@ -29,22 +29,16 @@ module Salmon
       slap = self.new
       doc = Nokogiri::XML(xml)
 
-      entry_doc = doc.search('entry')
+      root_doc = doc.search('diaspora')
 
       ### Header ##
       header_doc       = slap.salmon_header(doc, receiving_user) 
-      slap.author_email= header_doc.search('uri').text.split("acct:").last
+      slap.process_header(header_doc)
 
-      slap.aes_key     = header_doc.search('aes_key').text
-      slap.iv          = header_doc.search('iv').text
+      ### Envelope ##
+      slap.magic_sig = MagicSigEnvelope.parse(root_doc)
 
-      slap.magic_sig = MagicSigEnvelope.parse(entry_doc)
-
-
-      #should be in encrypted salmon only
-      key_hash = {'key' => slap.aes_key, 'iv' => slap.iv}
-      
-      slap.parsed_data = slap.parse_data(key_hash, receiving_user)
+      slap.parsed_data = slap.parse_data(receiving_user)
 
       slap
     end
@@ -54,8 +48,15 @@ module Salmon
       activity
     end
 
+    # Takes in a doc of the header and sets the author id
+    # returns an empty hash
+    # @return [String] Author id  
+    def process_header(doc)
+      self.author_id   = doc.search('author_id').text
+    end
+
     # @return [String]
-    def parse_data(key_hash, user=nil)
+    def parse_data(user=nil)
       Slap.decode64url(self.magic_sig.data)
     end
 
@@ -69,10 +70,10 @@ module Salmon
     def xml_for(person)
       @xml =<<ENTRY
     <?xml version='1.0' encoding='UTF-8'?>
-    <entry xmlns='http://www.w3.org/2005/Atom'>
+    <diaspora xmlns="https://github.com/diaspora/diaspora/wiki/Diaspora%27s-federation-protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env">
       #{header(person)}
       #{@magic_sig.to_xml}
-    </entry>
+    </diaspora>
 ENTRY
     end
 
@@ -86,19 +87,14 @@ ENTRY
     # @return [String] Header XML (sans <header></header> tags)
     def plaintext_header
       header =<<HEADER
-    <iv>#{iv}</iv>
-    <aes_key>#{aes_key}</aes_key>
-    <author>
-      <name>#{@author.name}</name>
-      <uri>acct:#{@author.diaspora_handle}</uri>
-    </author>
+    <author_id>#{@author.diaspora_handle}</author_id>
 HEADER
     end
 
     # @return [Person] Author of the salmon object
     def author
       if @author.nil?
-        @author ||= Person.by_account_identifier @author_email
+        @author ||= Person.by_account_identifier @author_id
         raise "did you remember to async webfinger?" if @author.nil?
       end
       @author

spec/lib/postzord/receiver/private_spec.rb

@@ -36,7 +36,7 @@ describe Postzord::Receiver::Private do
       salmon_mock = mock()
       web_mock = mock()
       web_mock.should_receive(:fetch).and_return true
-      salmon_mock.should_receive(:author_email).and_return(true)
+      salmon_mock.should_receive(:author_id).and_return(true)
       Salmon::EncryptedSlap.should_receive(:from_xml).with(@salmon_xml, @user).and_return(salmon_mock)
       Webfinger.should_receive(:new).and_return(web_mock)
 

spec/lib/salmon/base64_spec.rb

+require 'spec_helper'
+
+describe Base64 do
+  describe ".urlsafe_encode64_stripped" do
+    it "strips the trailing '=' from the url_safe characters" do
+      pending
+      Base64.should_receive(:urlsafe_encode64).and_return("MTIzMTIzMQ==")
+      Base64.urlsafe_encode64_stripped("random stuff").should == "MTIzMTIzMQ"
+    end
+  end
+end

spec/lib/salmon/encrypted_slap_spec.rb

@@ -23,6 +23,25 @@ describe Salmon::EncryptedSlap do
     end
   end
 
+  describe "#process_header" do
+    before do
+      @new_slap = Salmon::EncryptedSlap.new
+      @new_slap.process_header(Nokogiri::XML(@created_salmon.plaintext_header))
+    end
+
+    it 'sets the author id' do
+      @new_slap.author_id.should == alice.diaspora_handle
+    end
+
+    it 'sets the aes_key' do
+      @new_slap.aes_key.should == @created_salmon.aes_key
+    end
+
+    it 'sets the aes_key' do
+      @new_slap.iv.should == @created_salmon.iv
+    end
+  end
+
   context 'marshalling' do
     let(:xml)   {@created_salmon.xml_for(eve.person)}
     let(:parsed_salmon) { Salmon::EncryptedSlap.from_xml(xml, alice)}
@@ -41,16 +60,33 @@ describe Salmon::EncryptedSlap do
   end
 
   describe '#xml_for' do
-    let(:xml) {@created_salmon.xml_for eve.person}
+    before do
+      @xml = @created_salmon.xml_for eve.person
+    end
 
     it 'has a encrypted header field' do
-      xml.include?("encrypted_header").should be true
+      doc = Nokogiri::XML(@xml)
+      doc.find("encrypted_header").should_not be_blank
     end
+    
+    context "encrypted header" do
+      before do
+        doc = Nokogiri::XML(@xml)
+        decrypted_header = eve.decrypt(doc.search('encrypted_header').text)
+        @dh_doc = Nokogiri::XML(decrypted_header)
+      end
+
+      it 'contains the aes key' do
+        @dh_doc.search('aes_key').map(&:text).should == [@created_salmon.aes_key]
+      end
+
+      it 'contains the initialization vector' do
+        @dh_doc.search('iv').map(&:text).should == [@created_salmon.iv]
+      end
 
-    it 'the encrypted_header field should contain the aes key' do
-      doc = Nokogiri::XML(xml)
-      decrypted_header = eve.decrypt(doc.search('encrypted_header').text)
-      decrypted_header.include?(@created_salmon.aes_key).should be true
+      it 'contains the author id' do
+        @dh_doc.search('author_id').map(&:text).should == [alice.diaspora_handle]
+      end
     end
   end
 end

spec/lib/salmon/slap_spec.rb

@@ -24,6 +24,21 @@ describe Salmon::Slap do
     salmon.parsed_data.should == @post.to_diaspora_xml
   end
 
+  describe '#from_xml' do
+    it 'procsses the header' do
+      Salmon::Slap.any_instance.should_receive(:process_header)
+      Salmon::Slap.from_xml(@created_salmon.xml_for(eve.person))
+    end
+  end
+
+  describe "#process_header" do
+    it 'sets the author id' do
+      slap = Salmon::Slap.new
+      slap.process_header(Nokogiri::XML(@created_salmon.plaintext_header))
+      slap.author_id.should == alice.diaspora_handle
+    end
+  end
+
   describe '#author' do
     let(:xml)   {@created_salmon.xml_for(eve.person)}
     let(:parsed_salmon) { Salmon::Slap.from_xml(xml, alice)}
@@ -33,7 +48,7 @@ describe Salmon::Slap do
     end
 
     it 'should fail if no author is found' do
-      parsed_salmon.author_email = 'tom@tom.joindiaspora.com'
+      parsed_salmon.author_id = 'tom@tom.joindiaspora.com'
       expect {
         parsed_salmon.author.public_key
       }.should raise_error "did you remember to async webfinger?"
@@ -45,7 +60,7 @@ describe Salmon::Slap do
     let(:parsed_salmon) { Salmon::Slap.from_xml(xml)}
 
     it 'should parse out the authors diaspora_handle' do
-      parsed_salmon.author_email.should == alice.person.diaspora_handle
+      parsed_salmon.author_id.should == alice.person.diaspora_handle
     end
 
     it 'verifies the signature for the sender' do
@@ -60,4 +75,36 @@ describe Salmon::Slap do
       parsed_salmon.parsed_data.should == @post.to_diaspora_xml
     end
   end
+
+  describe "#xml_for" do
+    before do
+      @xml = @created_salmon.xml_for(eve.person)
+    end
+    
+    it "has diaspora as the root" do
+      doc = Nokogiri::XML(@xml)
+      doc.root.name.should == "diaspora"
+    end
+    
+    it "it has the descrypted header" do
+      doc = Nokogiri::XML(@xml)
+      doc.search("header").should_not be_blank
+    end
+    
+    context "header" do
+
+      it "it has author_id node " do
+        doc = Nokogiri::XML(@xml)
+        search = doc.search("header").search("author_id")
+        search.map(&:text).should == [alice.diaspora_handle]
+      end
+
+    end
+
+    it "it has the magic envelope " do
+      doc = Nokogiri::XML(@xml)
+      doc.find("/me:env").should_not be_blank
+    end
+  end
 end
+