2016-02-01 07:43:26 -05:00
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# frozen_string_literal: true
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2007-11-10 02:48:56 -05:00
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require 'rubygems'
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2013-09-14 04:59:02 -04:00
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require 'rubygems/request'
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require 'rubygems/uri_formatter'
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2011-01-18 19:08:49 -05:00
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require 'rubygems/user_interaction'
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2014-09-13 23:30:02 -04:00
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require 'rubygems/request/connection_pools'
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2012-11-29 01:52:18 -05:00
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require 'resolv'
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2007-11-10 02:48:56 -05:00
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##
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# RemoteFetcher handles the details of fetching gems and gem information from
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# a remote source.
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class Gem::RemoteFetcher
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2008-03-31 18:40:06 -04:00
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include Gem::UserInteraction
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2008-06-17 18:04:18 -04:00
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##
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# A FetchError exception wraps up the various possible IO and HTTP failures
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# that could happen while downloading from the internet.
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class FetchError < Gem::Exception
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##
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# The URI which was being accessed when the exception happened.
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attr_accessor :uri
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def initialize(message, uri)
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super message
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2016-04-27 20:33:08 -04:00
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begin
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uri = URI(uri)
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uri.password = 'REDACTED' if uri.password
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@uri = uri.to_s
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rescue URI::InvalidURIError, ArgumentError
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@uri = uri
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end
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2008-06-17 18:04:18 -04:00
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end
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def to_s # :nodoc:
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"#{super} (#{uri})"
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end
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end
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2007-11-10 02:48:56 -05:00
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2012-11-29 01:52:18 -05:00
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##
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# A FetchError that indicates that the reason for not being
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# able to fetch data was that the host could not be contacted
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class UnknownHostError < FetchError
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end
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2007-11-10 02:48:56 -05:00
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@fetcher = nil
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2008-06-17 18:04:18 -04:00
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##
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2007-11-10 02:48:56 -05:00
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# Cached RemoteFetcher instance.
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2008-06-17 18:04:18 -04:00
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2007-11-10 02:48:56 -05:00
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def self.fetcher
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2007-12-20 03:39:12 -05:00
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@fetcher ||= self.new Gem.configuration[:http_proxy]
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2007-11-10 02:48:56 -05:00
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end
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2015-10-29 20:54:12 -04:00
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attr_accessor :headers
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2008-06-17 18:04:18 -04:00
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##
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2007-11-10 02:48:56 -05:00
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# Initialize a remote fetcher using the source URI and possible proxy
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# information.
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#
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# +proxy+
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# * [String]: explicit specification of proxy; overrides any environment
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# variable setting
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# * nil: respect environment variables (HTTP_PROXY, HTTP_PROXY_USER,
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# HTTP_PROXY_PASS)
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# * <tt>:no_proxy</tt>: ignore environment variables and _don't_ use a proxy
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2012-11-29 01:52:18 -05:00
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#
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# +dns+: An object to use for DNS resolution of the API endpoint.
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# By default, use Resolv::DNS.
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2015-10-29 20:54:12 -04:00
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#
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# +headers+: A set of additional HTTP headers to be sent to the server when
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# fetching the gem.
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2008-06-17 18:04:18 -04:00
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2015-10-29 20:54:12 -04:00
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def initialize(proxy=nil, dns=Resolv::DNS.new, headers={})
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2011-01-18 19:08:49 -05:00
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require 'net/http'
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require 'stringio'
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require 'time'
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require 'uri'
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2008-03-31 18:40:06 -04:00
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Socket.do_not_reverse_lookup = true
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2013-09-14 04:59:02 -04:00
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@proxy = proxy
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2014-09-13 23:30:02 -04:00
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@pools = {}
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@pool_lock = Mutex.new
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@cert_files = Gem::Request.get_cert_files
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2012-11-29 01:52:18 -05:00
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@dns = dns
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2015-10-29 20:54:12 -04:00
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@headers = headers
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2012-11-29 01:52:18 -05:00
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end
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##
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# Given a source at +uri+, calculate what hostname to actually
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# connect to query the data for it.
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def api_endpoint(uri)
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host = uri.host
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begin
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res = @dns.getresource "_rubygems._tcp.#{host}",
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Resolv::DNS::Resource::IN::SRV
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2015-09-08 18:46:43 -04:00
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rescue Resolv::ResolvError => e
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verbose "Getting SRV record failed: #{e}"
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2012-11-29 01:52:18 -05:00
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uri
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else
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2015-06-11 01:34:52 -04:00
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target = res.target.to_s.strip
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if /\.#{Regexp.quote(host)}\z/ =~ target
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return URI.parse "#{uri.scheme}://#{target}#{uri.path}"
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end
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uri
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2012-11-29 01:52:18 -05:00
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end
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2007-11-10 02:48:56 -05:00
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end
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2011-03-01 04:41:32 -05:00
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##
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# Given a name and requirement, downloads this gem into cache and returns the
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# filename. Returns nil if the gem cannot be located.
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#--
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# Should probably be integrated with #download below, but that will be a
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2015-01-09 09:20:10 -05:00
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# larger, more encompassing effort. -erikh
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2011-03-01 04:41:32 -05:00
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def download_to_cache dependency
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2012-11-29 01:52:18 -05:00
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found, _ = Gem::SpecFetcher.fetcher.spec_for_dependency dependency
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2011-03-01 04:41:32 -05:00
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return if found.empty?
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2013-09-24 20:53:19 -04:00
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spec, source = found.max_by { |(s,_)| s.version }
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2011-03-01 04:41:32 -05:00
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2012-11-29 01:52:18 -05:00
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download spec, source.uri.to_s
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2011-03-01 04:41:32 -05:00
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end
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2008-03-31 18:40:06 -04:00
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##
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# Moves the gem +spec+ from +source_uri+ to the cache dir unless it is
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# already there. If the source_uri is local the gem cache dir copy is
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# always replaced.
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2008-06-17 18:04:18 -04:00
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2008-03-31 18:40:06 -04:00
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def download(spec, source_uri, install_dir = Gem.dir)
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2012-11-29 01:52:18 -05:00
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cache_dir =
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if Dir.pwd == install_dir then # see fetch_command
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install_dir
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elsif File.writable? install_dir then
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File.join install_dir, "cache"
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else
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File.join Gem.user_dir, "cache"
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end
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2008-06-25 22:06:00 -04:00
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2011-05-31 23:45:05 -04:00
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gem_file_name = File.basename spec.cache_file
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2008-06-17 18:04:18 -04:00
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local_gem_path = File.join cache_dir, gem_file_name
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2008-03-31 18:40:06 -04:00
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2008-06-17 18:04:18 -04:00
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FileUtils.mkdir_p cache_dir rescue nil unless File.exist? cache_dir
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2008-03-31 18:40:06 -04:00
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2014-02-03 19:48:31 -05:00
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# Always escape URI's to deal with potential spaces and such
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# It should also be considered that source_uri may already be
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# a valid URI with escaped characters. e.g. "{DESede}" is encoded
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# as "%7BDESede%7D". If this is escaped again the percentage
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# symbols will be escaped.
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unless source_uri.is_a?(URI::Generic)
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begin
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source_uri = URI.parse(source_uri)
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rescue
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source_uri = URI.parse(URI.const_defined?(:DEFAULT_PARSER) ?
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URI::DEFAULT_PARSER.escape(source_uri.to_s) :
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URI.escape(source_uri.to_s))
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end
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2009-06-09 17:38:59 -04:00
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end
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2008-03-31 18:40:06 -04:00
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scheme = source_uri.scheme
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# URI.parse gets confused by MS Windows paths with forward slashes.
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scheme = nil if scheme =~ /^[a-z]$/i
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2012-11-29 01:52:18 -05:00
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# REFACTOR: split this up and dispatch on scheme (eg download_http)
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# REFACTOR: be sure to clean up fake fetcher when you do this... cleaner
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2008-03-31 18:40:06 -04:00
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case scheme
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2014-09-13 23:30:02 -04:00
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when 'http', 'https', 's3' then
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2008-03-31 18:40:06 -04:00
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unless File.exist? local_gem_path then
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begin
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2014-09-13 23:30:02 -04:00
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verbose "Downloading gem #{gem_file_name}"
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2008-03-31 18:40:06 -04:00
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remote_gem_path = source_uri + "gems/#{gem_file_name}"
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2012-11-29 01:52:18 -05:00
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self.cache_update_path remote_gem_path, local_gem_path
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2008-03-31 18:40:06 -04:00
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rescue Gem::RemoteFetcher::FetchError
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raise if spec.original_platform == spec.platform
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alternate_name = "#{spec.original_name}.gem"
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2014-09-13 23:30:02 -04:00
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verbose "Failed, downloading gem #{alternate_name}"
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2008-03-31 18:40:06 -04:00
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remote_gem_path = source_uri + "gems/#{alternate_name}"
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2012-11-29 01:52:18 -05:00
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self.cache_update_path remote_gem_path, local_gem_path
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2008-03-31 18:40:06 -04:00
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end
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end
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2009-06-09 17:38:59 -04:00
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when 'file' then
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begin
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path = source_uri.path
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path = File.dirname(path) if File.extname(path) == '.gem'
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2011-03-01 04:41:32 -05:00
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remote_gem_path = correct_for_windows_path(File.join(path, 'gems', gem_file_name))
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2009-06-09 17:38:59 -04:00
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FileUtils.cp(remote_gem_path, local_gem_path)
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rescue Errno::EACCES
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local_gem_path = source_uri.to_s
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end
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2014-09-13 23:30:02 -04:00
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verbose "Using local gem #{local_gem_path}"
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2009-06-09 17:38:59 -04:00
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when nil then # TODO test for local overriding cache
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2010-02-21 21:52:35 -05:00
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source_path = if Gem.win_platform? && source_uri.scheme &&
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!source_uri.path.include?(':') then
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"#{source_uri.scheme}:#{source_uri.path}"
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else
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source_uri.path
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end
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2013-09-14 04:59:02 -04:00
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source_path = Gem::UriFormatter.new(source_path).unescape
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2010-02-21 21:52:35 -05:00
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2008-03-31 18:40:06 -04:00
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begin
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2010-02-21 21:52:35 -05:00
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FileUtils.cp source_path, local_gem_path unless
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2012-04-15 20:44:47 -04:00
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File.identical?(source_path, local_gem_path)
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2008-03-31 18:40:06 -04:00
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rescue Errno::EACCES
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local_gem_path = source_uri.to_s
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end
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2014-09-13 23:30:02 -04:00
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verbose "Using local gem #{local_gem_path}"
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2008-03-31 18:40:06 -04:00
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else
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2012-11-29 01:52:18 -05:00
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raise ArgumentError, "unsupported URI scheme #{source_uri.scheme}"
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2008-03-31 18:40:06 -04:00
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end
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local_gem_path
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end
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2011-05-31 23:45:05 -04:00
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##
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# File Fetcher. Dispatched by +fetch_path+. Use it instead.
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def fetch_file uri, *_
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Gem.read_binary correct_for_windows_path uri.path
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end
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##
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# HTTP Fetcher. Dispatched by +fetch_path+. Use it instead.
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def fetch_http uri, last_modified = nil, head = false, depth = 0
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fetch_type = head ? Net::HTTP::Head : Net::HTTP::Get
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2015-10-29 20:54:12 -04:00
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response = request uri, fetch_type, last_modified do |req|
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headers.each { |k,v| req.add_field(k,v) }
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end
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2011-05-31 23:45:05 -04:00
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case response
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when Net::HTTPOK, Net::HTTPNotModified then
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2014-09-13 23:30:02 -04:00
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response.uri = uri if response.respond_to? :uri
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2011-05-31 23:45:05 -04:00
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head ? response : response.body
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when Net::HTTPMovedPermanently, Net::HTTPFound, Net::HTTPSeeOther,
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Net::HTTPTemporaryRedirect then
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raise FetchError.new('too many redirects', uri) if depth > 10
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2016-09-27 20:57:53 -04:00
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unless location = response['Location']
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raise FetchError.new("redirecting but no redirect location was given", uri)
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end
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2011-05-31 23:45:05 -04:00
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location = URI.parse response['Location']
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2012-04-19 19:07:48 -04:00
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if https?(uri) && !https?(location)
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raise FetchError.new("redirecting to non-https resource: #{location}", uri)
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end
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2011-05-31 23:45:05 -04:00
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fetch_http(location, last_modified, head, depth + 1)
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else
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raise FetchError.new("bad response #{response.message} #{response.code}", uri)
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end
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end
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alias :fetch_https :fetch_http
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2008-06-17 18:04:18 -04:00
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##
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# Downloads +uri+ and returns it as a String.
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2008-06-25 22:06:00 -04:00
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def fetch_path(uri, mtime = nil, head = false)
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2011-05-31 23:45:05 -04:00
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uri = URI.parse uri unless URI::Generic === uri
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raise ArgumentError, "bad uri: #{uri}" unless uri
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2012-11-29 01:52:18 -05:00
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unless uri.scheme
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raise ArgumentError, "uri scheme is invalid: #{uri.scheme.inspect}"
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end
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2011-05-31 23:45:05 -04:00
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data = send "fetch_#{uri.scheme}", uri, mtime, head
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2012-11-29 01:52:18 -05:00
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2014-09-13 23:30:02 -04:00
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if data and !head and uri.to_s =~ /\.gz$/
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2012-11-29 01:52:18 -05:00
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begin
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data = Gem.gunzip data
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rescue Zlib::GzipFile::Error
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raise FetchError.new("server did not return a valid file", uri.to_s)
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end
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end
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2008-06-25 22:06:00 -04:00
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data
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2008-06-17 18:04:18 -04:00
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rescue FetchError
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raise
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2007-11-10 02:48:56 -05:00
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rescue Timeout::Error
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2012-11-29 01:52:18 -05:00
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raise UnknownHostError.new('timed out', uri.to_s)
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2007-12-20 03:39:12 -05:00
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rescue IOError, SocketError, SystemCallError => e
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2012-11-29 01:52:18 -05:00
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if e.message =~ /getaddrinfo/
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raise UnknownHostError.new('no such name', uri.to_s)
|
|
|
|
else
|
|
|
|
raise FetchError.new("#{e.class}: #{e}", uri.to_s)
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2014-09-13 23:30:02 -04:00
|
|
|
def fetch_s3(uri, mtime = nil, head = false)
|
|
|
|
public_uri = sign_s3_url(uri)
|
|
|
|
fetch_https public_uri, mtime, head
|
|
|
|
end
|
|
|
|
|
2012-11-29 01:52:18 -05:00
|
|
|
##
|
|
|
|
# Downloads +uri+ to +path+ if necessary. If no path is given, it just
|
|
|
|
# passes the data.
|
|
|
|
|
2012-12-06 00:13:08 -05:00
|
|
|
def cache_update_path uri, path = nil, update = true
|
2012-11-29 01:52:18 -05:00
|
|
|
mtime = path && File.stat(path).mtime rescue nil
|
|
|
|
|
2014-02-03 19:48:31 -05:00
|
|
|
data = fetch_path(uri, mtime)
|
2012-11-29 01:52:18 -05:00
|
|
|
|
2014-02-03 19:48:31 -05:00
|
|
|
if data == nil # indicates the server returned 304 Not Modified
|
|
|
|
return Gem.read_binary(path)
|
|
|
|
end
|
2012-11-29 01:52:18 -05:00
|
|
|
|
2014-02-03 19:48:31 -05:00
|
|
|
if update and path
|
2016-06-18 01:11:55 -04:00
|
|
|
Gem.write_binary(path, data)
|
2012-11-29 01:52:18 -05:00
|
|
|
end
|
2014-02-03 19:48:31 -05:00
|
|
|
|
|
|
|
data
|
2007-11-10 02:48:56 -05:00
|
|
|
end
|
|
|
|
|
2008-06-17 18:04:18 -04:00
|
|
|
##
|
2007-11-10 02:48:56 -05:00
|
|
|
# Returns the size of +uri+ in bytes.
|
2008-06-17 18:04:18 -04:00
|
|
|
|
2008-06-25 22:06:00 -04:00
|
|
|
def fetch_size(uri) # TODO: phase this out
|
|
|
|
response = fetch_path(uri, nil, true)
|
2007-11-10 02:48:56 -05:00
|
|
|
|
2008-06-25 22:06:00 -04:00
|
|
|
response['content-length'].to_i
|
2007-11-10 02:48:56 -05:00
|
|
|
end
|
|
|
|
|
2011-03-01 04:41:32 -05:00
|
|
|
def correct_for_windows_path(path)
|
|
|
|
if path[0].chr == '/' && path[1].chr =~ /[a-z]/i && path[2].chr == ':'
|
2014-11-16 22:55:02 -05:00
|
|
|
path[1..-1]
|
2011-03-01 04:41:32 -05:00
|
|
|
else
|
|
|
|
path
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
2008-06-17 18:04:18 -04:00
|
|
|
##
|
|
|
|
# Performs a Net::HTTP request of type +request_class+ on +uri+ returning
|
|
|
|
# a Net::HTTP response object. request maintains a table of persistent
|
|
|
|
# connections to reduce connect overhead.
|
|
|
|
|
2008-06-25 22:06:00 -04:00
|
|
|
def request(uri, request_class, last_modified = nil)
|
2014-09-13 23:30:02 -04:00
|
|
|
proxy = proxy_for @proxy, uri
|
|
|
|
pool = pools_for(proxy).pool_for uri
|
|
|
|
|
|
|
|
request = Gem::Request.new uri, request_class, last_modified, pool
|
2013-07-30 18:11:11 -04:00
|
|
|
|
2013-09-14 04:59:02 -04:00
|
|
|
request.fetch do |req|
|
|
|
|
yield req if block_given?
|
2013-07-22 18:46:50 -04:00
|
|
|
end
|
2011-05-31 23:45:05 -04:00
|
|
|
end
|
|
|
|
|
2012-04-19 19:07:48 -04:00
|
|
|
def https?(uri)
|
|
|
|
uri.scheme.downcase == 'https'
|
|
|
|
end
|
|
|
|
|
2014-11-16 22:55:02 -05:00
|
|
|
def close_all
|
|
|
|
@pools.each_value {|pool| pool.close_all}
|
|
|
|
end
|
|
|
|
|
2014-09-13 23:30:02 -04:00
|
|
|
protected
|
|
|
|
|
|
|
|
# we have our own signing code here to avoid a dependency on the aws-sdk gem
|
|
|
|
# fortunately, a simple GET request isn't too complex to sign properly
|
|
|
|
def sign_s3_url(uri, expiration = nil)
|
|
|
|
require 'base64'
|
|
|
|
require 'openssl'
|
|
|
|
|
|
|
|
unless uri.user && uri.password
|
|
|
|
raise FetchError.new("credentials needed in s3 source, like s3://key:secret@bucket-name/", uri.to_s)
|
|
|
|
end
|
|
|
|
|
|
|
|
expiration ||= s3_expiration
|
|
|
|
canonical_path = "/#{uri.host}#{uri.path}"
|
|
|
|
payload = "GET\n\n\n#{expiration}\n#{canonical_path}"
|
|
|
|
digest = OpenSSL::HMAC.digest('sha1', uri.password, payload)
|
|
|
|
# URI.escape is deprecated, and there isn't yet a replacement that does quite what we want
|
|
|
|
signature = Base64.encode64(digest).gsub("\n", '').gsub(/[\+\/=]/) { |c| BASE64_URI_TRANSLATE[c] }
|
|
|
|
URI.parse("https://#{uri.host}.s3.amazonaws.com#{uri.path}?AWSAccessKeyId=#{uri.user}&Expires=#{expiration}&Signature=#{signature}")
|
|
|
|
end
|
|
|
|
|
|
|
|
def s3_expiration
|
|
|
|
(Time.now + 3600).to_i # one hour from now
|
|
|
|
end
|
|
|
|
|
|
|
|
BASE64_URI_TRANSLATE = { '+' => '%2B', '/' => '%2F', '=' => '%3D' }.freeze
|
|
|
|
|
|
|
|
private
|
|
|
|
|
|
|
|
def proxy_for proxy, uri
|
|
|
|
Gem::Request.proxy_uri(proxy || Gem::Request.get_proxy_from_env(uri.scheme))
|
|
|
|
end
|
|
|
|
|
|
|
|
def pools_for proxy
|
|
|
|
@pool_lock.synchronize do
|
|
|
|
@pools[proxy] ||= Gem::Request::ConnectionPools.new proxy, @cert_files
|
|
|
|
end
|
|
|
|
end
|
2007-11-10 02:48:56 -05:00
|
|
|
end
|