3036: Assign collection uuid without complaint if not provided by client.

[arvados.git] / services / api / app / controllers / arvados / v1 / collections_controller.rb

diff --git a/services/api/app/controllers/arvados/v1/collections_controller.rb b/services/api/app/controllers/arvados/v1/collections_controller.rb
index 2844cb4c7a0f0afc8bcf40c5b3fb0b9f9b9d53b2..a0c64aa6e6adc4ad30dc4094681a45d3ce597ecb 100644 (file)
--- a/services/api/app/controllers/arvados/v1/collections_controller.rb
+++ b/services/api/app/controllers/arvados/v1/collections_controller.rb
@@ -1,5 +1,3 @@
-require 'locator'
-
 class Arvados::V1::CollectionsController < ApplicationController
   def create
     # Collections are owned by system_user. Creating a collection has
@@ -15,7 +13,6 @@ class Arvados::V1::CollectionsController < ApplicationController
 
     # Check permissions on the collection manifest.
     # If any signature cannot be verified, return 403 Permission denied.
-    perms_ok = true
     api_token = current_api_client_authorization.andand.api_token
     signing_opts = {
       key: Rails.configuration.blob_signing_key,
@@ -24,32 +21,38 @@ class Arvados::V1::CollectionsController < ApplicationController
     }
     resource_attrs[:manifest_text].lines.each do |entry|
       entry.split[1..-1].each do |tok|
-        # TODO(twp): fail the request if this match fails.
-        # Add in Phase 4 (see #2755)
-        loc = Locator.parse(tok)
-        if loc and loc.signature
-          if !api_token
-            logger.warn "No API token present; cannot verify signature on #{loc}"
-            perms_ok = false
-          elsif !Blob.verify_signature tok, signing_opts
-            logger.warn "Invalid signature on locator #{loc}"
-            perms_ok = false
-          end
+        if /^[[:digit:]]+:[[:digit:]]+:/.match tok
+          # This is a filename token, not a blob locator. Note that we
+          # keep checking tokens after this, even though manifest
+          # format dictates that all subsequent tokens will also be
+          # filenames. Safety first!
+        elsif Blob.verify_signature tok, signing_opts
+          # OK.
+        elsif Locator.parse(tok).andand.signature
+          # Signature provided, but verify_signature did not like it.
+          logger.warn "Invalid signature on locator #{tok}"
+          raise ArvadosModel::PermissionDeniedError
+        elsif Rails.configuration.permit_create_collection_with_unsigned_manifest
+          # No signature provided, but we are running in insecure mode.
+          logger.debug "Missing signature on locator #{tok} ignored"
+        elsif Blob.new(tok).empty?
+          # No signature provided -- but no data to protect, either.
+        else
+          logger.warn "Missing signature on locator #{tok}"
+          raise ArvadosModel::PermissionDeniedError
         end
       end
     end
-    unless perms_ok
-      raise ArvadosModel::PermissionDeniedError
-    end
 
     # Remove any permission signatures from the manifest.
     resource_attrs[:manifest_text]
-      .gsub!(/[[:xdigit:]]{32}(\+[[:digit:]]+)?(\+\S+)/) { |word|
+      .gsub!(/ [[:xdigit:]]{32}(\+[[:digit:]]+)?(\+\S+)/) { |word|
+      word.strip!
       loc = Locator.parse(word)
       if loc
-        loc.without_signature.to_s
+        " " + loc.without_signature.to_s
       else
-        word
+        " " + word
       end
     }
 
@@ -60,11 +63,11 @@ class Arvados::V1::CollectionsController < ApplicationController
         @object.save!
       rescue ActiveRecord::RecordNotUnique
         logger.debug resource_attrs.inspect
-        if resource_attrs[:manifest_text] and resource_attrs[:uuid]
+        if @object.manifest_text and @object.uuid
           @existing_object = model_class.
             where('uuid=? and manifest_text=?',
-                  resource_attrs[:uuid],
-                  resource_attrs[:manifest_text]).
+                  @object.uuid,
+                  @object.manifest_text).
             first
           @object = @existing_object || @object
         end
@@ -95,12 +98,13 @@ class Arvados::V1::CollectionsController < ApplicationController
         ttl: Rails.configuration.blob_signing_ttl,
       }
       @object[:manifest_text]
-        .gsub!(/[[:xdigit:]]{32}(\+[[:digit:]]+)?(\+\S+)/) { |word|
+        .gsub!(/ [[:xdigit:]]{32}(\+[[:digit:]]+)?(\+\S+)/) { |word|
+        word.strip!
         loc = Locator.parse(word)
         if loc
-          Blob.sign_locator(word, signing_opts)
+          " " + Blob.sign_locator(word, signing_opts)
         else
-          word
+          " " + word
         end
       }
     end