Use the shell less to avoid any shell metacharacter shenanigans #19
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@BanzaiMan Ping |
| @fetch_tar = File.expand_path('fetch.tgz', @casher_dir) if path_ext(url) == 'tgz' | ||
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| if system "curl --tcp-nodelay -w '#{CURL_FORMAT}' %p -o %p -f -s --retry 3 >#{@casher_dir}/fetch.log 2>#{@casher_dir}/fetch.err.log" % [url, @fetch_tar] | ||
| args = ['curl', '--tcp-nodelay', '-w', CURL_FORMAT, '-o', @fetch_tar, '-f', '-s', '--retry', '3', url] |
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Sorry for the delay. I like the idea, but there may be some issues. |
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In general, shelling out is relatively error-prone given that one must remember to escape/quote shell metacharacters all the time, including spaces in filenames. For these
curlandtarcommands, there's no need to be using the shell in the first place, since no shell features are being used. So this switches them to useOpen3.popen3with an array argument instead (which shouldn't invoke the shell).Also, the old code used
%pfor some shell escaping, even thoughString#inspectis not intended to be used for that purpose.Since travis-ci/travis-ci#5092 involves Cacher, I'm looking for possible bugs in Cacher.