81 lines
2.3 KiB
Ruby
81 lines
2.3 KiB
Ruby
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# frozen_string_literal: true
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module Jekyll
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class Theme
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extend Forwardable
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attr_reader :name
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def_delegator :gemspec, :version, :version
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def initialize(name)
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@name = name.downcase.strip
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Jekyll.logger.debug "Theme:", name
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Jekyll.logger.debug "Theme source:", root
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end
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def root
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# Must use File.realpath to resolve symlinks created by rbenv
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# Otherwise, Jekyll.sanitized path with prepend the unresolved root
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@root ||= File.realpath(gemspec.full_gem_path)
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rescue Errno::ENOENT, Errno::EACCES, Errno::ELOOP
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raise "Path #{gemspec.full_gem_path} does not exist, is not accessible "\
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"or includes a symbolic link loop"
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end
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def includes_path
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@includes_path ||= path_for "_includes"
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end
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def layouts_path
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@layouts_path ||= path_for "_layouts"
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end
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def sass_path
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@sass_path ||= path_for "_sass"
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end
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def assets_path
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@assets_path ||= path_for "assets"
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end
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def runtime_dependencies
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gemspec.runtime_dependencies
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end
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private
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def path_for(folder)
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path = realpath_for(folder)
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path if path && File.directory?(path)
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end
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def realpath_for(folder)
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# This resolves all symlinks for the theme subfolder and then ensures that the directory
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# remains inside the theme root. This prevents the use of symlinks for theme subfolders to
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# escape the theme root.
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# However, symlinks are allowed to point to other directories within the theme.
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Jekyll.sanitized_path(root, File.realpath(Jekyll.sanitized_path(root, folder.to_s)))
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rescue Errno::ENOENT, Errno::EACCES, Errno::ELOOP => e
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log_realpath_exception(e, folder)
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nil
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end
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def log_realpath_exception(err, folder)
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return if err.is_a?(Errno::ENOENT)
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case err
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when Errno::EACCES
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Jekyll.logger.error "Theme error:", "Directory '#{folder}' is not accessible."
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when Errno::ELOOP
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Jekyll.logger.error "Theme error:", "Directory '#{folder}' includes a symbolic link loop."
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end
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end
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def gemspec
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@gemspec ||= Gem::Specification.find_by_name(name)
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rescue Gem::LoadError
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raise Jekyll::Errors::MissingDependencyException,
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"The #{name} theme could not be found."
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end
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end
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end
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