class Ability class << self def allowed(user, subject) return anonymous_abilities(user, subject) if user.nil? return [] unless user.is_a?(User) return [] if user.blocked? case subject when CommitStatus then commit_status_abilities(user, subject) when Project then project_abilities(user, subject) when Issue then issue_abilities(user, subject) when ExternalIssue then external_issue_abilities(user, subject) when Note then note_abilities(user, subject) when ProjectSnippet then project_snippet_abilities(user, subject) when PersonalSnippet then personal_snippet_abilities(user, subject) when MergeRequest then merge_request_abilities(user, subject) when Group then group_abilities(user, subject) when Namespace then namespace_abilities(user, subject) when GroupMember then group_member_abilities(user, subject) when ProjectMember then project_member_abilities(user, subject) when User then user_abilities else [] end.concat(global_abilities(user)) end # List of possible abilities for anonymous user def anonymous_abilities(user, subject) case true when subject.is_a?(PersonalSnippet) anonymous_personal_snippet_abilities(subject) when subject.is_a?(ProjectSnippet) anonymous_project_snippet_abilities(subject) when subject.is_a?(CommitStatus) anonymous_commit_status_abilities(subject) when subject.is_a?(Project) || subject.respond_to?(:project) anonymous_project_abilities(subject) when subject.is_a?(Group) || subject.respond_to?(:group) anonymous_group_abilities(subject) when subject.is_a?(User) anonymous_user_abilities else [] end end def anonymous_project_abilities(subject) project = if subject.is_a?(Project) subject else subject.project end if project && project.public? rules = [ :read_project, :read_wiki, :read_label, :read_milestone, :read_project_snippet, :read_project_member, :read_merge_request, :read_note, :read_commit_status, :download_code ] # Allow to read builds by anonymous user if guests are allowed rules << :read_build if project.public_builds? # Allow to read issues by anonymous user if issue is not confidential rules << :read_issue unless subject.is_a?(Issue) && subject.confidential? rules - project_disabled_features_rules(project) else [] end end def anonymous_commit_status_abilities(subject) rules = anonymous_project_abilities(subject.project) # If subject is Ci::Build which inherits from CommitStatus filter the abilities rules = filter_build_abilities(rules) if subject.is_a?(Ci::Build) rules end def anonymous_group_abilities(subject) rules = [] group = if subject.is_a?(Group) subject else subject.group end rules << :read_group if group.public? rules end def anonymous_personal_snippet_abilities(snippet) if snippet.public? [:read_personal_snippet] else [] end end def anonymous_project_snippet_abilities(snippet) if snippet.public? [:read_project_snippet] else [] end end def anonymous_user_abilities [:read_user] unless restricted_public_level? end def global_abilities(user) rules = [] rules << :create_group if user.can_create_group rules << :read_users_list rules end def project_abilities(user, project) rules = [] key = "/user/#{user.id}/project/#{project.id}" RequestStore.store[key] ||= begin # Push abilities on the users team role rules.push(*project_team_rules(project.team, user)) if project.owner == user || (project.group && project.group.has_owner?(user)) || user.admin? rules.push(*project_owner_rules) end if project.public? || (project.internal? && !user.external?) rules.push(*public_project_rules) # Allow to read builds for internal projects rules << :read_build if project.public_builds? end if project.archived? rules -= project_archived_rules end rules - project_disabled_features_rules(project) end end def project_team_rules(team, user) # Rules based on role in project if team.master?(user) project_master_rules elsif team.developer?(user) project_dev_rules elsif team.reporter?(user) project_report_rules elsif team.guest?(user) project_guest_rules end end def public_project_rules @public_project_rules ||= project_guest_rules + [ :download_code, :fork_project, :read_commit_status ] end def project_guest_rules @project_guest_rules ||= [ :read_project, :read_wiki, :read_issue, :read_label, :read_milestone, :read_project_snippet, :read_project_member, :read_merge_request, :read_note, :create_project, :create_issue, :create_note, :upload_file ] end def project_report_rules @project_report_rules ||= project_guest_rules + [ :download_code, :fork_project, :create_project_snippet, :update_issue, :admin_issue, :admin_label, :read_commit_status, :read_build, ] end def project_dev_rules @project_dev_rules ||= project_report_rules + [ :admin_merge_request, :update_merge_request, :create_commit_status, :update_commit_status, :create_build, :update_build, :create_merge_request, :create_wiki, :push_code ] end def project_archived_rules @project_archived_rules ||= [ :create_merge_request, :push_code, :push_code_to_protected_branches, :update_merge_request, :admin_merge_request ] end def project_master_rules @project_master_rules ||= project_dev_rules + [ :push_code_to_protected_branches, :update_project_snippet, :admin_milestone, :admin_project_snippet, :admin_project_member, :admin_merge_request, :admin_note, :admin_wiki, :admin_project, :admin_commit_status, :admin_build ] end def project_owner_rules @project_owner_rules ||= project_master_rules + [ :change_namespace, :change_visibility_level, :rename_project, :remove_project, :archive_project, :remove_fork_project, :destroy_merge_request, :destroy_issue ] end def project_disabled_features_rules(project) rules = [] unless project.issues_enabled rules += named_abilities('issue') end unless project.merge_requests_enabled rules += named_abilities('merge_request') end unless project.issues_enabled or project.merge_requests_enabled rules += named_abilities('label') rules += named_abilities('milestone') end unless project.snippets_enabled rules += named_abilities('project_snippet') end unless project.wiki_enabled rules += named_abilities('wiki') end unless project.builds_enabled rules += named_abilities('build') end rules end def group_abilities(user, group) rules = [] rules << :read_group if can_read_group?(user, group) # Only group masters and group owners can create new projects if group.has_master?(user) || group.has_owner?(user) || user.admin? rules += [ :create_projects, :admin_milestones ] end # Only group owner and administrators can admin group if group.has_owner?(user) || user.admin? rules += [ :admin_group, :admin_namespace, :admin_group_member, :change_visibility_level ] end rules.flatten end def can_read_group?(user, group) return true if user.admin? return true if group.public? return true if group.internal? && !user.external? return true if group.users.include?(user) GroupProjectsFinder.new(group).execute(user).any? end def namespace_abilities(user, namespace) rules = [] # Only namespace owner and administrators can admin it if namespace.owner == user || user.admin? rules += [ :create_projects, :admin_namespace ] end rules.flatten end [:issue, :merge_request].each do |name| define_method "#{name}_abilities" do |user, subject| rules = [] if subject.author == user || (subject.respond_to?(:assignee) && subject.assignee == user) rules += [ :"read_#{name}", :"update_#{name}", ] end rules += project_abilities(user, subject.project) rules = filter_confidential_issues_abilities(user, subject, rules) if subject.is_a?(Issue) rules end end def note_abilities(user, note) rules = [] if note.author == user rules += [ :read_note, :update_note, :admin_note ] end if note.respond_to?(:project) && note.project rules += project_abilities(user, note.project) end rules end def personal_snippet_abilities(user, snippet) rules = [] if snippet.author == user rules += [ :read_personal_snippet, :update_personal_snippet, :admin_personal_snippet ] end if snippet.public? || (snippet.internal? && !user.external?) rules << :read_personal_snippet end rules end def project_snippet_abilities(user, snippet) rules = [] if snippet.author == user || user.admin? rules += [ :read_project_snippet, :update_project_snippet, :admin_project_snippet ] end if snippet.public? || (snippet.internal? && !user.external?) || (snippet.private? && snippet.project.team.member?(user)) rules << :read_project_snippet end rules end def group_member_abilities(user, subject) rules = [] target_user = subject.user group = subject.group unless group.last_owner?(target_user) can_manage = group_abilities(user, group).include?(:admin_group_member) if can_manage rules << :update_group_member rules << :destroy_group_member elsif user == target_user rules << :destroy_group_member end end rules end def project_member_abilities(user, subject) rules = [] target_user = subject.user project = subject.project unless target_user == project.owner can_manage = project_abilities(user, project).include?(:admin_project_member) if can_manage rules << :update_project_member rules << :destroy_project_member elsif user == target_user rules << :destroy_project_member end end rules end def commit_status_abilities(user, subject) rules = project_abilities(user, subject.project) # If subject is Ci::Build which inherits from CommitStatus filter the abilities rules = filter_build_abilities(rules) if subject.is_a?(Ci::Build) rules end def filter_build_abilities(rules) # If we can't read build we should also not have that # ability when looking at this in context of commit_status %w(read create update admin).each do |rule| rules.delete(:"#{rule}_commit_status") unless rules.include?(:"#{rule}_build") end rules end def user_abilities [:read_user] end def abilities @abilities ||= begin abilities = Six.new abilities << self abilities end end def external_issue_abilities(user, subject) project_abilities(user, subject.project) end private def restricted_public_level? current_application_settings.restricted_visibility_levels.include?(Gitlab::VisibilityLevel::PUBLIC) end def named_abilities(name) [ :"read_#{name}", :"create_#{name}", :"update_#{name}", :"admin_#{name}" ] end def filter_confidential_issues_abilities(user, issue, rules) return rules if user.admin? || !issue.confidential? unless issue.author == user || issue.assignee == user || issue.project.team.member?(user.id) rules.delete(:admin_issue) rules.delete(:read_issue) rules.delete(:update_issue) end rules end end end