diff options
Diffstat (limited to 'lib/chef/streaming_cookbook_uploader.rb')
| -rw-r--r-- | lib/chef/streaming_cookbook_uploader.rb | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/lib/chef/streaming_cookbook_uploader.rb b/lib/chef/streaming_cookbook_uploader.rb new file mode 100644 index 0000000000..df90e0003d --- /dev/null +++ b/lib/chef/streaming_cookbook_uploader.rb @@ -0,0 +1,201 @@ +# inspired by/cargo-culted from http://stanislavvitvitskiy.blogspot.com/2008/12/multipart-post-in-ruby.html +# On Apr 6, 2010, at 3:00 PM, Stanislav Vitvitskiy wrote: +# +# It's free to use / modify / distribute. No need to mention anything. Just copy/paste and use. +# +# Regards, +# Stan + +require 'net/http' +require 'mixlib/authentication/signedheaderauth' +require 'openssl' +require 'chef/version' + +class Chef + class StreamingCookbookUploader + + DefaultHeaders = { 'accept' => 'application/json', 'x-chef-version' => ::Chef::VERSION } + + class << self + + def post(to_url, user_id, secret_key_filename, params = {}, headers = {}) + make_request(:post, to_url, user_id, secret_key_filename, params, headers) + end + + def put(to_url, user_id, secret_key_filename, params = {}, headers = {}) + make_request(:put, to_url, user_id, secret_key_filename, params, headers) + end + + def make_request(http_verb, to_url, user_id, secret_key_filename, params = {}, headers = {}) + boundary = '----RubyMultipartClient' + rand(1000000).to_s + 'ZZZZZ' + parts = [] + content_file = nil + + timestamp = Time.now.utc.iso8601 + secret_key = OpenSSL::PKey::RSA.new(File.read(secret_key_filename)) + + unless params.nil? || params.empty? + params.each do |key, value| + if value.kind_of?(File) + content_file = value + filepath = value.path + filename = File.basename(filepath) + parts << StringPart.new( "--" + boundary + "\r\n" + + "Content-Disposition: form-data; name=\"" + key.to_s + "\"; filename=\"" + filename + "\"\r\n" + + "Content-Type: application/octet-stream\r\n\r\n") + parts << StreamPart.new(value, File.size(filepath)) + parts << StringPart.new("\r\n") + else + parts << StringPart.new( "--" + boundary + "\r\n" + + "Content-Disposition: form-data; name=\"" + key.to_s + "\"\r\n\r\n") + parts << StringPart.new(value.to_s + "\r\n") + end + end + parts << StringPart.new("--" + boundary + "--\r\n") + end + + body_stream = MultipartStream.new(parts) + + timestamp = Time.now.utc.iso8601 + + url = URI.parse(to_url) + + Chef::Log.logger.debug("Signing: method: #{http_verb}, path: #{url.path}, file: #{content_file}, User-id: #{user_id}, Timestamp: #{timestamp}") + + # We use the body for signing the request if the file parameter + # wasn't a valid file or wasn't included. Extract the body (with + # multi-part delimiters intact) to sign the request. + # TODO: tim: 2009-12-28: It'd be nice to remove this special case, and + # always hash the entire request body. In the file case it would just be + # expanded multipart text - the entire body of the POST. + content_body = parts.inject("") { |result,part| result + part.read(0, part.size) } + content_file.rewind if content_file # we consumed the file for the above operation, so rewind it. + + signing_options = { + :http_method=>http_verb, + :path=>url.path, + :user_id=>user_id, + :timestamp=>timestamp} + (content_file && signing_options[:file] = content_file) || (signing_options[:body] = (content_body || "")) + + headers.merge!(Mixlib::Authentication::SignedHeaderAuth.signing_object(signing_options).sign(secret_key)) + + content_file.rewind if content_file + + # net/http doesn't like symbols for header keys, so we'll to_s each one just in case + headers = DefaultHeaders.merge(Hash[*headers.map{ |k,v| [k.to_s, v] }.flatten]) + + req = case http_verb + when :put + Net::HTTP::Put.new(url.path, headers) + when :post + Net::HTTP::Post.new(url.path, headers) + end + req.content_length = body_stream.size + req.content_type = 'multipart/form-data; boundary=' + boundary unless parts.empty? + req.body_stream = body_stream + + http = Net::HTTP.new(url.host, url.port) + if url.scheme == "https" + http.use_ssl = true + http.verify_mode = OpenSSL::SSL::VERIFY_NONE + end + res = http.request(req) + #res = http.start {|http_proc| http_proc.request(req) } + + # alias status to code and to_s to body for test purposes + # TODO: stop the following madness! + class << res + alias :to_s :body + + # BUGBUG this makes the response compatible with what respsonse_steps expects to test headers (response.headers[] -> response[]) + def headers + self + end + + def status + code.to_i + end + end + res + end + + end + + class StreamPart + def initialize(stream, size) + @stream, @size = stream, size + end + + def size + @size + end + + # read the specified amount from the stream + def read(offset, how_much) + @stream.read(how_much) + end + end + + class StringPart + def initialize(str) + @str = str + end + + def size + @str.length + end + + # read the specified amount from the string startiung at the offset + def read(offset, how_much) + @str[offset, how_much] + end + end + + class MultipartStream + def initialize(parts) + @parts = parts + @part_no = 0 + @part_offset = 0 + end + + def size + @parts.inject(0) {|size, part| size + part.size} + end + + def read(how_much) + return nil if @part_no >= @parts.size + + how_much_current_part = @parts[@part_no].size - @part_offset + + how_much_current_part = if how_much_current_part > how_much + how_much + else + how_much_current_part + end + + how_much_next_part = how_much - how_much_current_part + + current_part = @parts[@part_no].read(@part_offset, how_much_current_part) + + # recurse into the next part if the current one was not large enough + if how_much_next_part > 0 + @part_no += 1 + @part_offset = 0 + next_part = read(how_much_next_part) + current_part + if next_part + next_part + else + '' + end + else + @part_offset += how_much_current_part + current_part + end + end + end + + end + + +end |