70 lines
		
	
	
		
			2.4 KiB
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			70 lines
		
	
	
		
			2.4 KiB
		
	
	
	
		
			Ruby
		
	
	
	
# frozen_string_literal: true
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# Gitaly note: JV: no RPC's here.
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module Gitlab
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  module Git
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    # Ephemeral (per request) storage for environment variables that some
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    # Git commands need during internal API calls made from the Git
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    # pre-receive push hook.
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    #
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    # See
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    # https://gitlab.com/gitlab-org/gitaly/-/blob/master/doc/object_quarantine.md#gitlab-and-git-object-quarantine
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    # for more information.
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    #
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    # This class is thread-safe via RequestStore.
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    class HookEnv
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      ALLOWLISTED_VARIABLES = %w[
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        GIT_OBJECT_DIRECTORY_RELATIVE
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        GIT_ALTERNATE_OBJECT_DIRECTORIES_RELATIVE
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      ].freeze
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      # set stores the quarantining variables into request store.
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      #
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      # relative_path is sent from Gitaly to Rails when invoking internal API. In production it points to the
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      # transaction's snapshot repository. Tests should pass the original relative path of the repository as
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      # Gitaly is stubbed out from the invokation loop and doesn't create a transaction snapshot.
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      def self.set(gl_repository, relative_path, env)
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        return unless Gitlab::SafeRequestStore.active?
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        raise "missing gl_repository" if gl_repository.blank?
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        Gitlab::SafeRequestStore[:gitlab_git_env] ||= {}
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        Gitlab::SafeRequestStore[:gitlab_git_env][gl_repository] = allowlist_git_env(env)
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        Gitlab::SafeRequestStore[:gitlab_git_relative_path] = relative_path
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      end
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      # get_relative_path returns the relative path of the repository this hook call is triggered for.
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      # This is the repository's relative path in the transaction's snapshot and is passed back to Gitaly
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      # in quarantined calls.
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      def self.get_relative_path
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        return unless Gitlab::SafeRequestStore.active?
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        Gitlab::SafeRequestStore.fetch(:gitlab_git_relative_path)
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      end
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      def self.all(gl_repository)
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        return {} unless Gitlab::SafeRequestStore.active?
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        h = Gitlab::SafeRequestStore.fetch(:gitlab_git_env) { {} }
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        h.fetch(gl_repository, {})
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      end
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      def self.to_env_hash(gl_repository)
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        env = {}
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        all(gl_repository).compact.each do |key, value|
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          value = value.join(File::PATH_SEPARATOR) if value.is_a?(Array)
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          env[key.to_s] = value
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        end
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        env
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      end
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      def self.allowlist_git_env(env)
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        env.select { |key, _| ALLOWLISTED_VARIABLES.include?(key.to_s) }.with_indifferent_access
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      end
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    end
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  end
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end
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