class Grack::Server
Constants
- CRLF
Uses chunked (streaming) transfer, otherwise response blocks to calculate Content-Length header en.wikipedia.org/wiki/Chunked_transfer_encoding
- PLAIN_TYPE
HTTP error response handling functions
- SERVICES
Attributes
git[R]
Public Class Methods
new(config = false)
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# File lib/grack/server.rb, line 28 def initialize(config = false) set_config(config) end
Public Instance Methods
_call(env)
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# File lib/grack/server.rb, line 44 def _call(env) @env = env @req = Rack::Request.new(env) cmd, path, @reqfile, @rpc = match_routing return render_method_not_allowed if cmd == 'not_allowed' return render_not_found unless cmd @git = get_git(path) return render_not_found unless git.valid_repo? self.method(cmd).call end
call(env)
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# File lib/grack/server.rb, line 40 def call(env) dup._call(env) end
dumb_info_refs()
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# File lib/grack/server.rb, line 121 def dumb_info_refs git.update_server_info send_file(@reqfile, "text/plain; charset=utf-8") do hdr_nocache end end
encode_chunk(chunk)
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# File lib/grack/server.rb, line 94 def encode_chunk(chunk) size_in_hex = chunk.size.to_s(16) [size_in_hex, CRLF, chunk, CRLF].join end
get_git(path)
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# File lib/grack/server.rb, line 197 def get_git(path) root = @config[:project_root] || Dir.pwd path = File.join(root, path) Grack::Git.new(@config[:git_path], path) end
get_idx_file()
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# File lib/grack/server.rb, line 147 def get_idx_file send_file(@reqfile, "application/x-git-packed-objects-toc") do hdr_cache_forever end end
get_info_packs()
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# File lib/grack/server.rb, line 128 def get_info_packs # objects/info/packs send_file(@reqfile, "text/plain; charset=utf-8") do hdr_nocache end end
get_info_refs()
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# File lib/grack/server.rb, line 103 def get_info_refs service_name = get_service_type return dumb_info_refs unless has_access?(service_name) refs = git.execute([service_name, '--stateless-rpc', '--advertise-refs', git.repo]) @res = Rack::Response.new @res.status = 200 @res["Content-Type"] = "application/x-git-%s-advertisement" % service_name hdr_nocache @res.write(pkt_write("# service=git-#{service_name}\n")) @res.write(pkt_flush) @res.write(refs) @res.finish end
get_loose_object()
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# File lib/grack/server.rb, line 135 def get_loose_object send_file(@reqfile, "application/x-git-loose-object") do hdr_cache_forever end end
get_pack_file()
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# File lib/grack/server.rb, line 141 def get_pack_file send_file(@reqfile, "application/x-git-packed-objects") do hdr_cache_forever end end
get_service_type()
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# File lib/grack/server.rb, line 203 def get_service_type service_type = @req.params['service'] return false unless service_type return false if service_type[0, 4] != 'git-' service_type.gsub('git-', '') end
get_text_file()
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# File lib/grack/server.rb, line 153 def get_text_file send_file(@reqfile, "text/plain") do hdr_nocache end end
has_access?(rpc, check_content_type = false)
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# File lib/grack/server.rb, line 229 def has_access?(rpc, check_content_type = false) if check_content_type conten_type = "application/x-git-%s-request" % rpc return false unless @req.content_type == conten_type end return false unless ['upload-pack', 'receive-pack'].include?(rpc) if rpc == 'receive-pack' return @config[:receive_pack] if @config.include?(:receive_pack) end if rpc == 'upload-pack' return @config[:upload_pack] if @config.include?(:upload_pack) end git.config_setting(rpc) end
hdr_cache_forever()
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# File lib/grack/server.rb, line 301 def hdr_cache_forever now = Time.now().to_i @res["Date"] = now.to_s @res["Expires"] = (now + 31536000).to_s; @res["Cache-Control"] = "public, max-age=31536000"; end
hdr_nocache()
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header writing functions
# File lib/grack/server.rb, line 295 def hdr_nocache @res["Expires"] = "Fri, 01 Jan 1980 00:00:00 GMT" @res["Pragma"] = "no-cache" @res["Cache-Control"] = "no-cache, max-age=0, must-revalidate" end
match_routing()
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# File lib/grack/server.rb, line 210 def match_routing cmd = nil path = nil SERVICES.each do |method, handler, match, rpc| next unless m = Regexp.new(match).match(@req.path_info) return ['not_allowed'] unless method == @req.request_method cmd = handler path = m[1] file = @req.path_info.sub(path + '/', '') return [cmd, path, file, rpc] end nil end
pkt_flush()
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packet-line handling functions
# File lib/grack/server.rb, line 283 def pkt_flush '0000' end
pkt_write(str)
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# File lib/grack/server.rb, line 287 def pkt_write(str) (str.size + 4).to_s(16).rjust(4, '0') + str end
read_body()
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# File lib/grack/server.rb, line 248 def read_body if @env["HTTP_CONTENT_ENCODING"] =~ /gzip/ Zlib::GzipReader.new(@req.body).read else @req.body.read end end
render_method_not_allowed()
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# File lib/grack/server.rb, line 262 def render_method_not_allowed if @env['SERVER_PROTOCOL'] == "HTTP/1.1" [405, PLAIN_TYPE, ["Method Not Allowed"]] else [400, PLAIN_TYPE, ["Bad Request"]] end end
render_no_access()
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# File lib/grack/server.rb, line 274 def render_no_access [403, PLAIN_TYPE, ["Forbidden"]] end
render_not_found()
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# File lib/grack/server.rb, line 270 def render_not_found [404, PLAIN_TYPE, ["Not Found"]] end
send_file(reqfile, content_type) { || ... }
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some of this borrowed from the Rack::File implementation
# File lib/grack/server.rb, line 164 def send_file(reqfile, content_type) reqfile = File.join(git.repo, reqfile) return render_not_found unless File.exists?(reqfile) return render_not_found unless reqfile == File.realpath(reqfile) # reqfile looks legit: no path traversal, no leading '|' @res = Rack::Response.new @res.status = 200 @res["Content-Type"] = content_type @res["Last-Modified"] = File.mtime(reqfile).httpdate yield if size = File.size?(reqfile) @res["Content-Length"] = size.to_s @res.finish do File.open(reqfile, "rb") do |file| while part = file.read(8192) @res.write part end end end else body = [File.read(reqfile)] size = Rack::Utils.bytesize(body.first) @res["Content-Length"] = size @res.write body @res.finish end end
service_rpc()
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# File lib/grack/server.rb, line 69 def service_rpc return render_no_access unless has_access?(@rpc, true) input = read_body @res = Rack::Response.new @res.status = 200 @res["Content-Type"] = "application/x-git-%s-result" % @rpc @res["Transfer-Encoding"] = "chunked" @res["Cache-Control"] = "no-cache" @res.finish do git.execute([@rpc, '--stateless-rpc', git.repo]) do |pipe| pipe.write(input) pipe.close_write while block = pipe.read(8192) # 8KB at a time @res.write encode_chunk(block) # stream it to the client end @res.write terminating_chunk end end end
set_config(config)
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# File lib/grack/server.rb, line 32 def set_config(config) @config = config || {} end
set_config_setting(key, value)
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# File lib/grack/server.rb, line 36 def set_config_setting(key, value) @config[key] = value end
terminating_chunk()
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# File lib/grack/server.rb, line 99 def terminating_chunk [0, CRLF, CRLF].join end