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CurlDownloadStrategy#_fetch: do not alter variable @url (#504)

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In case of download failure and retry, altering `@url` can cause side
effect like repeatedly applying `HOMEBREW_ARTIFACT_DOMAIN`.
This commit is contained in:
Xu Cheng 2016-07-13 20:56:12 +08:00 committed by GitHub
parent 12c505c093
commit ed9bb449d1
1 changed files with 12 additions and 10 deletions
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22
Library/Homebrew/download_strategy.rb
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@ -330,23 +330,25 @@ class CurlDownloadStrategy < AbstractFileDownloadStrategy
# Private method, can be overridden if needed.
def _fetch
url = @url
if ENV["HOMEBREW_ARTIFACT_DOMAIN"]
@url.sub!(%r{^((ht|f)tps?://)?}, ENV["HOMEBREW_ARTIFACT_DOMAIN"].chomp("/") + "/")
ohai "Downloading from #{@url}"
url.sub!(%r{^((ht|f)tps?://)?}, ENV["HOMEBREW_ARTIFACT_DOMAIN"].chomp("/") + "/")
ohai "Downloading from #{url}"
end
urls = actual_urls
urls = actual_urls(url)
unless urls.empty?
ohai "Downloading from #{urls.last}"
if !ENV["HOMEBREW_NO_INSECURE_REDIRECT"].nil? && @url.start_with?("https://") &&
if !ENV["HOMEBREW_NO_INSECURE_REDIRECT"].nil? && url.start_with?("https://") &&
urls.any? { |u| !u.start_with? "https://" }
puts "HTTPS to HTTP redirect detected & HOMEBREW_NO_INSECURE_REDIRECT is set."
raise CurlDownloadStrategyError.new(@url)
raise CurlDownloadStrategyError.new(url)
end
@url = urls.last
url = urls.last
end
curl @url, "-C", downloaded_size, "-o", temporary_path
curl url, "-C", downloaded_size, "-o", temporary_path
end
# Curl options to be always passed to curl,
@ -357,11 +359,11 @@ class CurlDownloadStrategy < AbstractFileDownloadStrategy
copts
end
def actual_urls
def actual_urls(url)
urls = []
curl_args = _curl_opts << "-I" << "-L" << @url
curl_args = _curl_opts << "-I" << "-L" << url
Utils.popen_read("curl", *curl_args).scan(/^Location: (.+)$/).map do |m|
urls << URI.join(urls.last || @url, m.first.chomp).to_s
urls << URI.join(urls.last || url, m.first.chomp).to_s
end
urls
end