apps/workbench/app/controllers/collections_controller.rb

   1 # Copyright (C) The Arvados Authors. All rights reserved.
   2 #
   3 # SPDX-License-Identifier: AGPL-3.0
   4
   5 require "arvados/keep"
   6 require "arvados/collection"
   7 require "uri"
   8
   9 class CollectionsController < ApplicationController
  10   include ActionController::Live
  11
  12   skip_around_filter :require_thread_api_token, if: proc { |ctrl|
  13     Rails.configuration.anonymous_user_token and
  14     'show' == ctrl.action_name
  15   }
  16   skip_around_filter(:require_thread_api_token,
  17                      only: [:show_file, :show_file_links])
  18   skip_before_filter(:find_object_by_uuid,
  19                      only: [:provenance, :show_file, :show_file_links])
  20   # We depend on show_file to display the user agreement:
  21   skip_before_filter :check_user_agreements, only: :show_file
  22   skip_before_filter :check_user_profile, only: :show_file
  23
  24   RELATION_LIMIT = 5
  25
  26   def show_pane_list
  27     panes = %w(Files Upload Tags Provenance_graph Used_by Advanced)
  28     panes = panes - %w(Upload) unless (@object.editable? rescue false)
  29     panes
  30   end
  31
  32   def set_persistent
  33     case params[:value]
  34     when 'persistent', 'cache'
  35       persist_links = Link.filter([['owner_uuid', '=', current_user.uuid],
  36                                    ['link_class', '=', 'resources'],
  37                                    ['name', '=', 'wants'],
  38                                    ['tail_uuid', '=', current_user.uuid],
  39                                    ['head_uuid', '=', @object.uuid]])
  40       logger.debug persist_links.inspect
  41     else
  42       return unprocessable "Invalid value #{value.inspect}"
  43     end
  44     if params[:value] == 'persistent'
  45       if not persist_links.any?
  46         Link.create(link_class: 'resources',
  47                     name: 'wants',
  48                     tail_uuid: current_user.uuid,
  49                     head_uuid: @object.uuid)
  50       end
  51     else
  52       persist_links.each do |link|
  53         link.destroy || raise
  54       end
  55     end
  56
  57     respond_to do |f|
  58       f.json { render json: @object }
  59     end
  60   end
  61
  62   def index
  63     # API server index doesn't return manifest_text by default, but our
  64     # callers want it unless otherwise specified.
  65     @select ||= Collection.columns.map(&:name)
  66     base_search = Collection.select(@select)
  67     if params[:search].andand.length.andand > 0
  68       tags = Link.where(any: ['contains', params[:search]])
  69       @objects = (base_search.where(uuid: tags.collect(&:head_uuid)) |
  70                       base_search.where(any: ['contains', params[:search]])).
  71         uniq { |c| c.uuid }
  72     else
  73       if params[:limit]
  74         limit = params[:limit].to_i
  75       else
  76         limit = 100
  77       end
  78
  79       if params[:offset]
  80         offset = params[:offset].to_i
  81       else
  82         offset = 0
  83       end
  84
  85       @objects = base_search.limit(limit).offset(offset)
  86     end
  87     @links = Link.where(head_uuid: @objects.collect(&:uuid))
  88     @collection_info = {}
  89     @objects.each do |c|
  90       @collection_info[c.uuid] = {
  91         tag_links: [],
  92         wanted: false,
  93         wanted_by_me: false,
  94         provenance: [],
  95         links: []
  96       }
  97     end
  98     @links.each do |link|
  99       @collection_info[link.head_uuid] ||= {}
 100       info = @collection_info[link.head_uuid]
 101       case link.link_class
 102       when 'tag'
 103         info[:tag_links] << link
 104       when 'resources'
 105         info[:wanted] = true
 106         info[:wanted_by_me] ||= link.tail_uuid == current_user.uuid
 107       when 'provenance'
 108         info[:provenance] << link.name
 109       end
 110       info[:links] << link
 111     end
 112     @request_url = request.url
 113
 114     render_index
 115   end
 116
 117   def show_file_links
 118     return show_file
 119   end
 120
 121   def show_file
 122     # The order of searched tokens is important: because the anonymous user
 123     # token is passed along with every API request, we have to check it first.
 124     # Otherwise, it's impossible to know whether any other request succeeded
 125     # because of the reader token.
 126     coll = nil
 127     tokens = [(Rails.configuration.anonymous_user_token || nil),
 128               params[:reader_token],
 129               Thread.current[:arvados_api_token]].compact
 130     usable_token = find_usable_token(tokens) do
 131       coll = Collection.find(params[:uuid])
 132     end
 133     if usable_token.nil?
 134       # Response already rendered.
 135       return
 136     end
 137
 138     opts = {}
 139     if usable_token == params[:reader_token]
 140       opts[:path_token] = usable_token
 141     elsif usable_token == Rails.configuration.anonymous_user_token
 142       # Don't pass a token at all
 143     else
 144       # We pass the current user's real token only if it's necessary
 145       # to read the collection.
 146       opts[:query_token] = usable_token
 147     end
 148     opts[:disposition] = params[:disposition] if params[:disposition]
 149     return redirect_to keep_web_url(params[:uuid], params[:file], opts)
 150   end
 151
 152   def sharing_scopes
 153     ["GET /arvados/v1/collections/#{@object.uuid}", "GET /arvados/v1/collections/#{@object.uuid}/", "GET /arvados/v1/keep_services/accessible"]
 154   end
 155
 156   def search_scopes
 157     begin
 158       ApiClientAuthorization.filter([['scopes', '=', sharing_scopes]]).results
 159     rescue ArvadosApiClient::AccessForbiddenException
 160       nil
 161     end
 162   end
 163
 164   def find_object_by_uuid
 165     if not Keep::Locator.parse params[:id]
 166       super
 167     end
 168   end
 169
 170   def show
 171     return super if !@object
 172
 173     @logs = []
 174
 175     if params["tab_pane"] == "Provenance_graph"
 176       @prov_svg = ProvenanceHelper::create_provenance_graph(@object.provenance, "provenance_svg",
 177                                                             {:request => request,
 178                                                              :direction => :top_down,
 179                                                              :combine_jobs => :script_only}) rescue nil
 180     end
 181
 182     if current_user
 183       if Keep::Locator.parse params["uuid"]
 184         @same_pdh = Collection.filter([["portable_data_hash", "=", @object.portable_data_hash]]).limit(20)
 185         if @same_pdh.results.size == 1
 186           redirect_to collection_path(@same_pdh[0]["uuid"])
 187           return
 188         end
 189         owners = @same_pdh.map(&:owner_uuid).to_a.uniq
 190         preload_objects_for_dataclass Group, owners
 191         preload_objects_for_dataclass User, owners
 192         uuids = @same_pdh.map(&:uuid).to_a.uniq
 193         preload_links_for_objects uuids
 194         render 'hash_matches'
 195         return
 196       else
 197         if Job.api_exists?(:index)
 198           jobs_with = lambda do |conds|
 199             Job.limit(RELATION_LIMIT).where(conds)
 200               .results.sort_by { |j| j.finished_at || j.created_at }
 201           end
 202           @output_of = jobs_with.call(output: @object.portable_data_hash)
 203           @log_of = jobs_with.call(log: @object.portable_data_hash)
 204         end
 205
 206         @project_links = Link.limit(RELATION_LIMIT).order("modified_at DESC")
 207           .where(head_uuid: @object.uuid, link_class: 'name').results
 208         project_hash = Group.where(uuid: @project_links.map(&:tail_uuid)).to_hash
 209         @projects = project_hash.values
 210
 211         @permissions = Link.limit(RELATION_LIMIT).order("modified_at DESC")
 212           .where(head_uuid: @object.uuid, link_class: 'permission',
 213                  name: 'can_read').results
 214         @search_sharing = search_scopes
 215
 216         if params["tab_pane"] == "Used_by"
 217           @used_by_svg = ProvenanceHelper::create_provenance_graph(@object.used_by, "used_by_svg",
 218                                                                    {:request => request,
 219                                                                     :direction => :top_down,
 220                                                                     :combine_jobs => :script_only,
 221                                                                     :pdata_only => true}) rescue nil
 222         end
 223       end
 224     end
 225     super
 226   end
 227
 228   def sharing_popup
 229     @search_sharing = search_scopes
 230     render("sharing_popup.js", content_type: "text/javascript")
 231   end
 232
 233   helper_method :download_link
 234
 235   def download_link
 236     token = @search_sharing.first.api_token
 237     keep_web_url(@object.uuid, nil, {path_token: token})
 238   end
 239
 240   def share
 241     ApiClientAuthorization.create(scopes: sharing_scopes)
 242     sharing_popup
 243   end
 244
 245   def unshare
 246     search_scopes.each do |s|
 247       s.destroy
 248     end
 249     sharing_popup
 250   end
 251
 252   def remove_selected_files
 253     uuids, source_paths = selected_collection_files params
 254
 255     arv_coll = Arv::Collection.new(@object.manifest_text)
 256     source_paths[uuids[0]].each do |p|
 257       arv_coll.rm "."+p
 258     end
 259
 260     if @object.update_attributes manifest_text: arv_coll.manifest_text
 261       show
 262     else
 263       self.render_error status: 422
 264     end
 265   end
 266
 267   def update
 268     updated_attr = params[:collection].each.select {|a| a[0].andand.start_with? 'rename-file-path:'}
 269
 270     if updated_attr.size > 0
 271       # Is it file rename?
 272       file_path = updated_attr[0][0].split('rename-file-path:')[-1]
 273
 274       new_file_path = updated_attr[0][1]
 275       if new_file_path.start_with?('./')
 276         # looks good
 277       elsif new_file_path.start_with?('/')
 278         new_file_path = '.' + new_file_path
 279       else
 280         new_file_path = './' + new_file_path
 281       end
 282
 283       arv_coll = Arv::Collection.new(@object.manifest_text)
 284
 285       if arv_coll.exist?(new_file_path)
 286         @errors = 'Duplicate file path. Please use a different name.'
 287         self.render_error status: 422
 288       else
 289         arv_coll.rename "./"+file_path, new_file_path
 290
 291         if @object.update_attributes manifest_text: arv_coll.manifest_text
 292           show
 293         else
 294           self.render_error status: 422
 295         end
 296       end
 297     else
 298       # Not a file rename; use default
 299       super
 300     end
 301   end
 302
 303   protected
 304
 305   def find_usable_token(token_list)
 306     # Iterate over every given token to make it the current token and
 307     # yield the given block.
 308     # If the block succeeds, return the token it used.
 309     # Otherwise, render an error response based on the most specific
 310     # error we encounter, and return nil.
 311     most_specific_error = [401]
 312     token_list.each do |api_token|
 313       begin
 314         # We can't load the corresponding user, because the token may not
 315         # be scoped for that.
 316         using_specific_api_token(api_token, load_user: false) do
 317           yield
 318           return api_token
 319         end
 320       rescue ArvadosApiClient::ApiError => error
 321         if error.api_status >= most_specific_error.first
 322           most_specific_error = [error.api_status, error]
 323         end
 324       end
 325     end
 326     case most_specific_error.shift
 327     when 401, 403
 328       redirect_to_login
 329     when 404
 330       render_not_found(*most_specific_error)
 331     end
 332     return nil
 333   end
 334
 335   def keep_web_url(uuid_or_pdh, file, opts)
 336     munged_id = uuid_or_pdh.sub('+', '-')
 337     fmt = {uuid_or_pdh: munged_id}
 338
 339     tmpl = Rails.configuration.keep_web_url
 340     if Rails.configuration.keep_web_download_url and
 341         (!tmpl or opts[:disposition] == 'attachment')
 342       # Prefer the attachment-only-host when we want an attachment
 343       # (and when there is no preview link configured)
 344       tmpl = Rails.configuration.keep_web_download_url
 345     elsif not Rails.configuration.trust_all_content
 346       check_uri = URI.parse(tmpl % fmt)
 347       if opts[:query_token] and
 348           not check_uri.host.start_with?(munged_id + "--") and
 349           not check_uri.host.start_with?(munged_id + ".")
 350         # We're about to pass a token in the query string, but
 351         # keep-web can't accept that safely at a single-origin URL
 352         # template (unless it's -attachment-only-host).
 353         tmpl = Rails.configuration.keep_web_download_url
 354         if not tmpl
 355           raise ArgumentError, "Download precluded by site configuration"
 356         end
 357         logger.warn("Using download link, even though inline content " \
 358                     "was requested: #{check_uri.to_s}")
 359       end
 360     end
 361
 362     if tmpl == Rails.configuration.keep_web_download_url
 363       # This takes us to keep-web's -attachment-only-host so there is
 364       # no need to add ?disposition=attachment.
 365       opts.delete :disposition
 366     end
 367
 368     uri = URI.parse(tmpl % fmt)
 369     uri.path += '/' unless uri.path.end_with? '/'
 370     if opts[:path_token]
 371       uri.path += 't=' + opts[:path_token] + '/'
 372     end
 373     uri.path += '_/'
 374     uri.path += URI.escape(file) if file
 375
 376     query = Hash[URI.decode_www_form(uri.query || '')]
 377     { query_token: 'api_token',
 378       disposition: 'disposition' }.each do |opt, param|
 379       if opts.include? opt
 380         query[param] = opts[opt]
 381       end
 382     end
 383     unless query.empty?
 384       uri.query = URI.encode_www_form(query)
 385     end
 386
 387     uri.to_s
 388   end
 389 end