Allow users to update their OpenPGP pubkey

spec/features/settings/account_spec.rb

@@ -14,6 +14,7 @@ RSpec.describe 'Account settings', type: :feature do
         .with("invalid password").and_return(false)
       allow_any_instance_of(User).to receive(:valid_ldap_authentication?)
         .with("valid password").and_return(true)
+      allow_any_instance_of(User).to receive(:pgp_pubkey).and_return(nil)
     end
 
     scenario 'fails with invalid password' do
@@ -55,4 +56,44 @@ RSpec.describe 'Account settings', type: :feature do
       end
     end
   end
+
+  feature "Update OpenPGP key" do
+    let(:invalid_key) { File.read("#{Rails.root}/spec/fixtures/files/pgp_key_invalid.asc") }
+    let(:valid_key_alice) { File.read("#{Rails.root}/spec/fixtures/files/pgp_key_valid_alice.asc") }
+    let(:fingerprint_alice) { "EB85BB5FA33A75E15E944E63F231550C4F47E38E" }
+
+    before do
+      login_as user, :scope => :user
+      allow_any_instance_of(User).to receive(:ldap_entry).and_return({
+        uid: user.cn, ou: user.ou, display_name: nil, pgp_key: nil
+      })
+    end
+
+    scenario 'rejects an invalid key' do
+      expect(UserManager::UpdatePgpKey).not_to receive(:call)
+
+      visit setting_path(:account)
+      fill_in 'Public key', with: invalid_key
+      click_button "Save"
+
+      expect(current_url).to eq(setting_url(:account))
+      within ".error-msg" do
+        expect(page).to have_content("This is not a valid armored PGP public key block")
+      end
+    end
+
+    scenario 'stores a valid key' do
+      expect(UserManager::UpdatePgpKey).to receive(:call)
+        .with(user: user).and_return(true)
+
+      visit setting_path(:account)
+      fill_in 'Public key', with: valid_key_alice
+      click_button "Save"
+
+      expect(current_url).to eq(setting_url(:account))
+      within ".flash-msg" do
+        expect(page).to have_content("Settings saved")
+      end
+    end
+  end
 end

spec/features/settings/profile_spec.rb

@@ -9,7 +9,7 @@ RSpec.describe 'Profile settings', type: :feature do
     allow(user).to receive(:display_name).and_return("Mark")
     allow_any_instance_of(User).to receive(:dn).and_return("cn=mwahlberg,ou=kosmos.org,cn=users,dc=kosmos,dc=org")
     allow_any_instance_of(User).to receive(:ldap_entry).and_return({
-      uid: user.cn, ou: user.ou, display_name: "Mark"
+      uid: user.cn, ou: user.ou, display_name: "Mark", pgp_key: nil
     })
     allow_any_instance_of(User).to receive(:avatar).and_return(avatar_base64)
 

spec/models/user_spec.rb

@@ -262,7 +262,6 @@ RSpec.describe User, type: :model do
     let(:valid_key_jimmy) { File.read("#{Rails.root}/spec/fixtures/files/pgp_key_valid_jimmy.asc") }
     let(:fingerprint_alice) { "EB85BB5FA33A75E15E944E63F231550C4F47E38E" }
     let(:fingerprint_jimmy) { "316BF516236DAF77236B15F6057D93972FB862C3" }
-    let(:gnupg_key_alice) {  }
     let(:invalid_key) { File.read("#{Rails.root}/spec/fixtures/files/pgp_key_invalid.asc") }
 
     before do
@@ -275,8 +274,8 @@ RSpec.describe User, type: :model do
     end
 
     after do
-      GPGME::Key.get(fingerprint_alice).delete!
-      GPGME::Key.get(fingerprint_jimmy).delete!
+      alice.gnupg_key.delete!
+      jimmy.gnupg_key.delete!
     end
 
     describe "#acceptable_pgp_key_format" do

spec/services/user_manager/update_pgp_key_spec.rb

@@ -0,0 +1,74 @@
+require 'rails_helper'
+
+RSpec.describe UserManager::UpdatePgpKey, type: :model do
+  include ActiveJob::TestHelper
+
+  let(:alice) { create :user, cn: "alice" }
+  let(:dn)    { "cn=alice,ou=kosmos.org,cn=users,dc=kosmos,dc=org" }
+  let(:pubkey_asc) { File.read("#{Rails.root}/spec/fixtures/files/pgp_key_valid_alice.asc") }
+  let(:fingerprint) { "EB85BB5FA33A75E15E944E63F231550C4F47E38E" }
+
+  before do
+    allow(alice).to receive(:dn).and_return(dn)
+    allow(alice).to receive(:ldap_entry).and_return({
+      uid: alice.cn, ou: alice.ou, pgp_key: nil
+    })
+  end
+
+  describe "#call" do
+    context "with valid key" do
+      before do
+        alice.pgp_pubkey = pubkey_asc
+
+        allow(LdapManager::UpdatePgpKey).to receive(:call)
+          .with(dn: alice.dn, pubkey: pubkey_asc)
+      end
+
+      after do
+        alice.gnupg_key.delete!
+      end
+
+      it "imports the key into the GnuPG keychain" do
+        described_class.call(user: alice)
+        expect(alice.gnupg_key).to be_present
+      end
+
+      it "stores the key's fingerprint on the user record" do
+        described_class.call(user: alice)
+        expect(alice.pgp_fpr).to eq(fingerprint)
+      end
+
+      it "updates the user's LDAP entry with the new key" do
+        expect(LdapManager::UpdatePgpKey).to receive(:call)
+          .with(dn: alice.dn, pubkey: pubkey_asc)
+        described_class.call(user: alice)
+      end
+    end
+
+    context "with empty key" do
+      before do
+        alice.update pgp_fpr: fingerprint
+        alice.pgp_pubkey = ""
+
+        allow(LdapManager::UpdatePgpKey).to receive(:call)
+          .with(dn: alice.dn, pubkey: "")
+      end
+
+      it "does not attempt to import the key" do
+        expect(GPGME::Key).not_to receive(:import)
+        described_class.call(user: alice)
+      end
+
+      it "removes the key's fingerprint from the user record" do
+        described_class.call(user: alice)
+        expect(alice.pgp_fpr).to be_nil
+      end
+
+      it "removes the key from the user's LDAP entry" do
+        expect(LdapManager::UpdatePgpKey).to receive(:call)
+          .with(dn: alice.dn, pubkey: "")
+        described_class.call(user: alice)
+      end
+    end
+  end
+end