X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/b1daec9a928eefbc71d8b7368b148fa7b04bf32d..ef35a5388d60e892835309df2b46b221f8df221d:/services/api/app/models/api_client_authorization.rb

diff --git a/services/api/app/models/api_client_authorization.rb b/services/api/app/models/api_client_authorization.rb
index 7c7ed759c6..52922d32b1 100644
--- a/services/api/app/models/api_client_authorization.rb
+++ b/services/api/app/models/api_client_authorization.rb
@@ -35,7 +35,12 @@ class ApiClientAuthorization < ArvadosModel
   UNLOGGED_CHANGES = ['last_used_at', 'last_used_by_ip_address', 'updated_at']
 
   def assign_random_api_token
-    self.api_token ||= rand(2**256).to_s(36)
+    begin
+      self.api_token ||= rand(2**256).to_s(36)
+    rescue ActiveModel::MissingAttributeError
+      # Ignore the case where self.api_token doesn't exist, which happens when
+      # the select=[...] is used.
+    end
   end
 
   def owner_uuid
@@ -111,6 +116,37 @@ class ApiClientAuthorization < ArvadosModel
     clnt
   end
 
+  def self.check_anonymous_user_token(token:, remote:)
+    case token[0..2]
+    when 'v2/'
+      _, token_uuid, secret, optional = token.split('/')
+      unless token_uuid.andand.length == 27 && secret.andand.length.andand > 0 &&
+             token_uuid == Rails.configuration.ClusterID+"-gj3su-anonymouspublic"
+        # invalid v2 token, or v2 token for another user
+        return nil
+      end
+    else
+      # v1 token
+      secret = token
+    end
+
+    # Usually, the secret is salted
+    salted_secret = OpenSSL::HMAC.hexdigest('sha1', Rails.configuration.Users.AnonymousUserToken, remote)
+
+    # The anonymous token could be specified as a full v2 token in the config,
+    # but the config loader strips it down to the secret part.
+    # The anonymous token content and minimum length is verified in lib/config
+    if secret.length >= 0 && (secret == Rails.configuration.Users.AnonymousUserToken || secret == salted_secret)
+      return ApiClientAuthorization.new(user: User.find_by_uuid(anonymous_user_uuid),
+                                        uuid: Rails.configuration.ClusterID+"-gj3su-anonymouspublic",
+                                        api_token: secret,
+                                        api_client: anonymous_user_token_api_client,
+                                        scopes: ['GET /'])
+    else
+      return nil
+    end
+  end
+
   def self.check_system_root_token token
     if token == Rails.configuration.SystemRootToken
       return ApiClientAuthorization.new(user: User.find_by_uuid(system_user_uuid),
@@ -126,6 +162,11 @@ class ApiClientAuthorization < ArvadosModel
     return nil if token.nil? or token.empty?
     remote ||= Rails.configuration.ClusterID
 
+    auth = self.check_anonymous_user_token(token: token, remote: remote)
+    if !auth.nil?
+      return auth
+    end
+
     auth = self.check_system_root_token(token)
     if !auth.nil?
       return auth