class Arvados::V1::CollectionsController < ApplicationController
def create
- # It's not an error for a client to re-register a manifest that we
- # already know about.
- @object = model_class.new resource_attrs
- begin
- @object.save!
- rescue ActiveRecord::RecordNotUnique
- logger.debug resource_attrs.inspect
- if resource_attrs[:manifest_text] and resource_attrs[:uuid]
- @existing_object = model_class.
- where('uuid=? and manifest_text=?',
- resource_attrs[:uuid],
- resource_attrs[:manifest_text]).
- first
- @object = @existing_object || @object
+ # Collections are owned by system_user. Creating a collection has
+ # two effects: The collection is added if it doesn't already
+ # exist, and a "permission" Link is added (if one doesn't already
+ # exist) giving the current user (or specified owner_uuid)
+ # permission to read it.
+ owner_uuid = resource_attrs.delete(:owner_uuid) || current_user.uuid
+ unless current_user.can? write: owner_uuid
+ logger.warn "User #{current_user.andand.uuid} tried to set collection owner_uuid to #{owner_uuid}"
+ raise ArvadosModel::PermissionDeniedError
+ end
+
+ # 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,
+ api_token: api_token,
+ ttl: Rails.configuration.blob_signing_ttl,
+ }
+ resource_attrs[:manifest_text].lines.each do |entry|
+ entry.split[1..-1].each do |tok|
+ # TODO(twp): in Phase 4, fail the request if the locator
+ # lacks a permission signature. (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
+ 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|
+ word.strip!
+ loc = Locator.parse(word)
+ if loc
+ " " + loc.without_signature.to_s
+ else
+ " " + word
+ end
+ }
+
+ # Save the collection with the stripped manifest.
+ act_as_system_user do
+ @object = model_class.new resource_attrs.reject { |k,v| k == :owner_uuid }
+ begin
+ @object.save!
+ rescue ActiveRecord::RecordNotUnique
+ logger.debug resource_attrs.inspect
+ if resource_attrs[:manifest_text] and resource_attrs[:uuid]
+ @existing_object = model_class.
+ where('uuid=? and manifest_text=?',
+ resource_attrs[:uuid],
+ resource_attrs[:manifest_text]).
+ first
+ @object = @existing_object || @object
+ end
+ end
+ if @object
+ link_attrs = {
+ owner_uuid: owner_uuid,
+ link_class: 'permission',
+ name: 'can_read',
+ head_uuid: @object.uuid,
+ tail_uuid: owner_uuid
+ }
+ ActiveRecord::Base.transaction do
+ if Link.where(link_attrs).empty?
+ Link.create! link_attrs
+ end
+ end
end
end
show
end
+
+ def show
+ if current_api_client_authorization
+ signing_opts = {
+ key: Rails.configuration.blob_signing_key,
+ api_token: current_api_client_authorization.api_token,
+ ttl: Rails.configuration.blob_signing_ttl,
+ }
+ @object[:manifest_text]
+ .gsub!(/ [[:xdigit:]]{32}(\+[[:digit:]]+)?(\+\S+)/) { |word|
+ word.strip!
+ loc = Locator.parse(word)
+ if loc
+ " " + Blob.sign_locator(word, signing_opts)
+ else
+ " " + word
+ end
+ }
+ end
+ render json: @object.as_api_response(:with_data)
+ end
+
+ def collection_uuid(uuid)
+ m = /([a-f0-9]{32}(\+[0-9]+)?)(\+.*)?/.match(uuid)
+ if m
+ m[1]
+ else
+ nil
+ end
+ end
+
+ def script_param_edges(visited, sp)
+ case sp
+ when Hash
+ sp.each do |k, v|
+ script_param_edges(visited, v)
+ end
+ when Array
+ sp.each do |v|
+ script_param_edges(visited, v)
+ end
+ when String
+ return if sp.empty?
+ m = collection_uuid(sp)
+ if m
+ generate_provenance_edges(visited, m)
+ end
+ end
+ end
+
+ def generate_provenance_edges(visited, uuid)
+ m = collection_uuid(uuid)
+ uuid = m if m
+
+ if not uuid or uuid.empty? or visited[uuid]
+ return ""
+ end
+
+ logger.debug "visiting #{uuid}"
+
+ if m
+ # uuid is a collection
+ Collection.readable_by(current_user).where(uuid: uuid).each do |c|
+ visited[uuid] = c.as_api_response
+ visited[uuid][:files] = []
+ c.files.each do |f|
+ visited[uuid][:files] << f
+ end
+ end
+
+ Job.readable_by(current_user).where(output: uuid).each do |job|
+ generate_provenance_edges(visited, job.uuid)
+ end
+
+ Job.readable_by(current_user).where(log: uuid).each do |job|
+ generate_provenance_edges(visited, job.uuid)
+ end
+
+ else
+ # uuid is something else
+ rsc = ArvadosModel::resource_class_for_uuid uuid
+ if rsc == Job
+ Job.readable_by(current_user).where(uuid: uuid).each do |job|
+ visited[uuid] = job.as_api_response
+ script_param_edges(visited, job.script_parameters)
+ end
+ elsif rsc != nil
+ rsc.where(uuid: uuid).each do |r|
+ visited[uuid] = r.as_api_response
+ end
+ end
+ end
+
+ Link.readable_by(current_user).
+ where(head_uuid: uuid, link_class: "provenance").
+ each do |link|
+ visited[link.uuid] = link.as_api_response
+ generate_provenance_edges(visited, link.tail_uuid)
+ end
+
+ #puts "finished #{uuid}"
+ end
+
+ def provenance
+ visited = {}
+ generate_provenance_edges(visited, @object[:uuid])
+ render json: visited
+ end
+
+ def generate_used_by_edges(visited, uuid)
+ m = collection_uuid(uuid)
+ uuid = m if m
+
+ if not uuid or uuid.empty? or visited[uuid]
+ return ""
+ end
+
+ logger.debug "visiting #{uuid}"
+
+ if m
+ # uuid is a collection
+ Collection.readable_by(current_user).where(uuid: uuid).each do |c|
+ visited[uuid] = c.as_api_response
+ visited[uuid][:files] = []
+ c.files.each do |f|
+ visited[uuid][:files] << f
+ end
+ end
+
+ if uuid == "d41d8cd98f00b204e9800998ecf8427e+0"
+ # special case for empty collection
+ return
+ end
+
+ Job.readable_by(current_user).where(["jobs.script_parameters like ?", "%#{uuid}%"]).each do |job|
+ generate_used_by_edges(visited, job.uuid)
+ end
+
+ else
+ # uuid is something else
+ rsc = ArvadosModel::resource_class_for_uuid uuid
+ if rsc == Job
+ Job.readable_by(current_user).where(uuid: uuid).each do |job|
+ visited[uuid] = job.as_api_response
+ generate_used_by_edges(visited, job.output)
+ end
+ elsif rsc != nil
+ rsc.where(uuid: uuid).each do |r|
+ visited[uuid] = r.as_api_response
+ end
+ end
+ end
+
+ Link.readable_by(current_user).
+ where(tail_uuid: uuid, link_class: "provenance").
+ each do |link|
+ visited[link.uuid] = link.as_api_response
+ generate_used_by_edges(visited, link.head_uuid)
+ end
+
+ #puts "finished #{uuid}"
+ end
+
+ def used_by
+ visited = {}
+ generate_used_by_edges(visited, @object[:uuid])
+ render json: visited
+ end
+
+ protected
+ def find_object_by_uuid
+ super
+ if !@object and !params[:uuid].match(/^[0-9a-f]+\+\d+$/)
+ # Normalize the given uuid and search again.
+ hash_part = params[:uuid].match(/^([0-9a-f]*)/)[1]
+ collection = Collection.where('uuid like ?', hash_part + '+%').first
+ if collection
+ # We know the collection exists, and what its real uuid is in
+ # the database. Now, throw out @objects and repeat the usual
+ # lookup procedure. (Returning the collection at this point
+ # would bypass permission checks.)
+ @objects = nil
+ @where = { uuid: collection.uuid }
+ find_objects_for_index
+ @object = @objects.first
+ end
+ end
+ end
end
projects / arvados.git / blobdiff