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module Gitlab
class RouteMap
FormatError = Class.new(StandardError)
def initialize(data)
begin
entries = YAML.safe_load(data)
rescue
raise FormatError, 'Route map is not valid YAML'
end
raise FormatError, 'Route map is not an array' unless entries.is_a?(Array)
@map = entries.map { |entry| parse_entry(entry) }
end
def public_path_for_source_path(path)
mapping = @map.find { |mapping| mapping[:source] === path }
return unless mapping
if mapping[:source].is_a?(String)
path.sub(mapping[:source], mapping[:public])
else
mapping[:source].replace(path, mapping[:public])
end
end
private
def parse_entry(entry)
raise FormatError, 'Route map entry is not a hash' unless entry.is_a?(Hash)
raise FormatError, 'Route map entry does not have a source key' unless entry.has_key?('source')
raise FormatError, 'Route map entry does not have a public key' unless entry.has_key?('public')
source_pattern = entry['source']
public_path = entry['public']
if source_pattern.start_with?('/') && source_pattern.end_with?('/')
source_pattern = source_pattern[1...-1].gsub('\/', '/')
begin
source_pattern = Gitlab::UntrustedRegexp.new('\A' + source_pattern + '\z')
rescue RegexpError => e
raise FormatError, "Route map entry source is not a valid regular expression: #{e}"
end
end
{
source: source_pattern,
public: public_path
}
end
end
end
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