debian-mirror-gitlab/app/services/resource_access_tokens/create_service.rb

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# frozen_string_literal: true
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module ResourceAccessTokens
class CreateService < BaseService
def initialize(current_user, resource, params = {})
@resource_type = resource.class.name.downcase
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@resource = resource
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@current_user = current_user
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@params = params.dup
end
def execute
return error("User does not have permission to create #{resource_type} Access Token") unless has_permission_to_create?
user = create_user
return error(user.errors.full_messages.to_sentence) unless user.persisted?
return error("Failed to provide maintainer access") unless provision_access(resource, user)
token_response = create_personal_access_token(user)
if token_response.success?
success(token_response.payload[:personal_access_token])
else
error(token_response.message)
end
end
private
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attr_reader :resource_type, :resource
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def has_permission_to_create?
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%w(project group).include?(resource_type) && can?(current_user, :admin_resource_access_tokens, resource)
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end
def create_user
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# Even project maintainers can create project access tokens, which in turn
# creates a bot user, and so it becomes necessary to have `skip_authorization: true`
# since someone like a project maintainer does not inherently have the ability
# to create a new user in the system.
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Users::CreateService.new(current_user, default_user_params).execute(skip_authorization: true)
end
def default_user_params
{
name: params[:name] || "#{resource.name.to_s.humanize} bot",
email: generate_email,
username: generate_username,
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user_type: "#{resource_type}_bot".to_sym,
skip_confirmation: true # Bot users should always have their emails confirmed.
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}
end
def generate_username
base_username = "#{resource_type}_#{resource.id}_bot"
uniquify.string(base_username) { |s| User.find_by_username(s) }
end
def generate_email
email_pattern = "#{resource_type}#{resource.id}_bot%s@example.com"
uniquify.string(-> (n) { Kernel.sprintf(email_pattern, n) }) do |s|
User.find_by_email(s)
end
end
def uniquify
Uniquify.new
end
def create_personal_access_token(user)
PersonalAccessTokens::CreateService.new(user, personal_access_token_params).execute
end
def personal_access_token_params
{
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name: params[:name] || "#{resource_type}_bot",
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impersonation: false,
scopes: params[:scopes] || default_scopes,
expires_at: params[:expires_at] || nil
}
end
def default_scopes
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Gitlab::Auth.resource_bot_scopes
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end
def provision_access(resource, user)
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resource.add_user(user, :maintainer, expires_at: params[:expires_at])
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end
def error(message)
ServiceResponse.error(message: message)
end
def success(access_token)
ServiceResponse.success(payload: { access_token: access_token })
end
end
end