PNG  IHDRxsBIT|d pHYs+tEXtSoftwarewww.inkscape.org<,tEXtComment File Manager

File Manager

Path: /proc/self/root/opt/passenger/src/ruby_supportlib/phusion_passenger/utils/

Viewing File: unseekable_socket.rb

#  Phusion Passenger - https://www.phusionpassenger.com/
#  Copyright (c) 2010-2025 Asynchronous B.V.
#
#  "Passenger", "Phusion Passenger" and "Union Station" are registered
#  trademarks of Asynchronous B.V.
#
#  Permission is hereby granted, free of charge, to any person obtaining a copy
#  of this software and associated documentation files (the "Software"), to deal
#  in the Software without restriction, including without limitation the rights
#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#  copies of the Software, and to permit persons to whom the Software is
#  furnished to do so, subject to the following conditions:
#
#  The above copyright notice and this permission notice shall be included in
#  all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
#  THE SOFTWARE.

PhusionPassenger.require_passenger_lib 'utils'   # So that we can know whether #writev is supported.

# https://www.ruby-lang.org/en/news/2019/12/12/separation-of-positional-and-keyword-arguments-in-ruby-3-0/
def ruby2_keywords(*)
end if RUBY_VERSION < "2.7"

module PhusionPassenger
  module Utils

    # Some frameworks (e.g. Merb) call `seek` and `rewind` on the input stream
    # if it responds to these methods. In case of Phusion Passenger, the input
    # stream is a socket, and altough socket objects respond to `seek` and
    # `rewind`, calling these methods will raise an exception. We don't want
    # this to happen so in AbstractRequestHandler we wrap the client socket
    # into an UnseekableSocket wrapper, which doesn't respond to these methods.
    #
    # We used to dynamically undef `seek` and `rewind` on sockets, but this
    # blows the Ruby interpreter's method cache and made things slower.
    # Wrapping a socket is faster despite extra method calls.
    #
    # Furthermore, all exceptions originating from the wrapped socket will
    # be annotated. One can check whether a certain exception originates
    # from the wrapped socket by calling #source_of_exception?
    class UnseekableSocket
      def self.wrap(socket)
        return new.wrap(socket)
      end

      def wrap(socket)
        # Some people report that sometimes their Ruby (MRI/REE)
        # processes get stuck with 100% CPU usage. Upon further
        # inspection with strace, it turns out that these Ruby
        # processes are continuously calling lseek() on a socket,
        # which of course returns ESPIPE as error. gdb reveals
        # lseek() is called by fwrite(), which in turn is called
        # by rb_fwrite(). The affected socket is the
        # AbstractRequestHandler client socket.
        #
        # I inspected the MRI source code and didn't find
        # anything that would explain this behavior. This makes
        # me think that it's a glibc bug, but that's very
        # unlikely.
        #
        # The rb_fwrite() implementation takes an entirely
        # different code path if I set 'sync' to true: it will
        # skip fwrite() and use write() instead. So here we set
        # 'sync' to true in the hope that this will work around
        # the problem.
        socket.sync = true

        # There's no need to set the encoding for Ruby 1.9 because
        # abstract_request_handler.rb is tagged with 'encoding: binary'.

        @socket = socket

        return self
      end

      # Don't allow disabling of sync.
      def sync=(value)
      end

      # Socket is sync'ed so flushing shouldn't do anything.
      def flush
      end

      # Already set to binary mode.
      def binmode
      end

      # This makes select() work.
      def to_io
        @socket
      end

      def simulate_eof!
        @simulate_eof = true
      end

      def stop_simulating_eof!
        @simulate_eof = false
      end

      def fileno
        @socket.fileno
      end

      def addr
        @socket.addr
      rescue => e
        raise annotate(e)
      end

      def write(string)
        @socket.write(string)
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def write_nonblock(string, *args)
        @socket.write_nonblock(string, *args)
      rescue => e
        raise annotate(e)
      end

      def writev(components)
        @socket.writev(components)
      rescue => e
        raise annotate(e)
      end if IO.method_defined?(:writev)

      def writev2(components, components2)
        @socket.writev2(components, components2)
      rescue => e
        raise annotate(e)
      end if IO.method_defined?(:writev2)

      def writev3(components, components2, components3)
        @socket.writev3(components, components2, components3)
      rescue => e
        raise annotate(e)
      end if IO.method_defined?(:writev3)

      ruby2_keywords def send(*args)
        @socket.send(*args)
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def sendmsg(*args)
        @socket.sendmsg(*args)
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def sendmsg_nonblock(*args)
        @socket.sendmsg_nonblock(*args)
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def puts(*args)
        @socket.puts(*args)
      rescue => e
        raise annotate(e)
      end

      def gets
        return nil if @simulate_eof
        @socket.gets
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def read(*args)
        if @simulate_eof
          length, buffer = args
          if buffer
            buffer.replace(binary_string(""))
          else
            buffer = binary_string("")
          end
          if length
            return nil
          else
            return buffer
          end
        end
        @socket.read(*args)
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def read_nonblock(*args)
        raise EOFError, "end of file reached" if @simulate_eof
        @socket.read_nonblock(*args)
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def readpartial(*args)
        raise EOFError, "end of file reached" if @simulate_eof
        @socket.readpartial(*args)
      rescue => e
        raise annotate(e)
      end

      def readline
        raise EOFError, "end of file reached" if @simulate_eof
        @socket.readline
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def recv(*args)
        raise EOFError, "end of file reached" if @simulate_eof
        @socket.recv(*args)
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def recvfrom(*args)
        raise EOFError, "end of file reached" if @simulate_eof
        @socket.recvfrom(*args)
      rescue => e
        raise annotate(e)
      end

      ruby2_keywords def recvfrom_nonblock(*args)
        raise EOFError, "end of file reached" if @simulate_eof
        @socket.recvfrom_nonblock(*args)
      rescue => e
        raise annotate(e)
      end

      def each(&block)
        return if @simulate_eof
        @socket.each(&block)
      rescue => e
        raise annotate(e)
      end

      def eof?
        return true if @simulate_eof
        @socket.eof?
      rescue => e
        raise annotate(e)
      end

      def closed?
        @socket.closed?
      rescue => e
        raise annotate(e)
      end

      def close
        @socket.close
      rescue => e
        raise annotate(e)
      end

      def close_read
        @socket.close_read
      rescue => e
        raise annotate(e)
      end

      def close_write
        @socket.close_write
      rescue => e
        raise annotate(e)
      end

      def source_of_exception?(exception)
        return exception.instance_variable_get(:"@from_unseekable_socket") == @socket.object_id
      end

      def to_hash
        { :socket => "Not JSON Encodable", :eof => @simulate_eof }
      end

    private
      def annotate(exception)
        exception.instance_variable_set(:"@from_unseekable_socket", @socket.object_id)
        return exception
      end

      def raise_error_because_activity_disallowed!
        raise IOError, "It is not possible to read or write from the client socket because the current."
      end

      if ''.respond_to?(:force_encoding)
        def binary_string(str)
          return ''.force_encoding('binary')
        end
      else
        def binary_string(str)
          return ''
        end
      end
    end

  end # module Utils
end # module PhusionPassenger
b IDATxytVսϓ22 A@IR :hCiZ[v*E:WũZA ^dQeQ @ !jZ'>gsV仿$|?g)&x-EIENT ;@xT.i%-X}SvS5.r/UHz^_$-W"w)Ɗ/@Z &IoX P$K}JzX:;` &, ŋui,e6mX ԵrKb1ԗ)DADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADADA݀!I*]R;I2$eZ#ORZSrr6mteffu*((Pu'v{DIߔ4^pIm'77WEEE;vƎ4-$]'RI{\I&G :IHJ DWBB=\WR޽m o$K(V9ABB.}jѢv`^?IOȅ} ڶmG}T#FJ`56$-ھ}FI&v;0(h;Б38CӧOWf!;A i:F_m9s&|q%=#wZprrrla A &P\\СC[A#! {olF} `E2}MK/vV)i{4BffV\|ۭX`b@kɶ@%i$K z5zhmX[IXZ` 'b%$r5M4º/l ԃߖxhʔ)[@=} K6IM}^5k㏷݆z ΗÿO:gdGBmyT/@+Vɶ纽z񕏵l.y޴it뭷zV0[Y^>Wsqs}\/@$(T7f.InݺiR$푔n.~?H))\ZRW'Mo~v Ov6oԃxz! S,&xm/yɞԟ?'uaSѽb,8GלKboi&3t7Y,)JJ c[nzӳdE&KsZLӄ I?@&%ӟ۶mSMMњ0iؐSZ,|J+N ~,0A0!5%Q-YQQa3}$_vVrf9f?S8`zDADADADADADADADADAdqP,تmMmg1V?rSI꒟]u|l RCyEf٢9 jURbztѰ!m5~tGj2DhG*{H9)꒟ר3:(+3\?/;TUݭʴ~S6lڧUJ*i$d(#=Yݺd{,p|3B))q:vN0Y.jkק6;SɶVzHJJЀ-utѹսk>QUU\޲~]fFnK?&ߡ5b=z9)^|u_k-[y%ZNU6 7Mi:]ۦtk[n X(e6Bb."8cۭ|~teuuw|ήI-5"~Uk;ZicEmN/:]M> cQ^uiƞ??Ңpc#TUU3UakNwA`:Y_V-8.KKfRitv޲* 9S6ֿj,ՃNOMߤ]z^fOh|<>@Å5 _/Iu?{SY4hK/2]4%it5q]GGe2%iR| W&f*^]??vq[LgE_3f}Fxu~}qd-ږFxu~I N>\;͗O֊:̗WJ@BhW=y|GgwܷH_NY?)Tdi'?խwhlmQi !SUUsw4kӺe4rfxu-[nHtMFj}H_u~w>)oV}(T'ebʒv3_[+vn@Ȭ\S}ot}w=kHFnxg S 0eޢm~l}uqZfFoZuuEg `zt~? b;t%>WTkķh[2eG8LIWx,^\thrl^Ϊ{=dž<}qV@ ⠨Wy^LF_>0UkDuʫuCs$)Iv:IK;6ֲ4{^6եm+l3>݆uM 9u?>Zc }g~qhKwڭeFMM~pМuqǿz6Tb@8@Y|jx](^]gf}M"tG -w.@vOqh~/HII`S[l.6nØXL9vUcOoB\xoǤ'T&IǍQw_wpv[kmO{w~>#=P1Pɞa-we:iǏlHo׈꒟f9SzH?+shk%Fs:qVhqY`jvO'ρ?PyX3lх]˾uV{ݞ]1,MzYNW~̈́ joYn}ȚF߾׮mS]F z+EDxm/d{F{-W-4wY듏:??_gPf ^3ecg ҵs8R2מz@TANGj)}CNi/R~}c:5{!ZHӋӾ6}T]G]7W6^n 9*,YqOZj:P?Q DFL|?-^.Ɵ7}fFh׶xe2Pscz1&5\cn[=Vn[ĶE鎀uˌd3GII k;lNmشOuuRVfBE]ۣeӶu :X-[(er4~LHi6:Ѻ@ԅrST0trk%$Č0ez" *z"T/X9|8.C5Feg}CQ%͞ˣJvL/?j^h&9xF`њZ(&yF&Iݻfg#W;3^{Wo^4'vV[[K';+mӍִ]AC@W?1^{එyh +^]fm~iԵ]AB@WTk̏t uR?l.OIHiYyԶ]Aˀ7c:q}ힽaf6Z~қm(+sK4{^6}T*UUu]n.:kx{:2 _m=sAߤU@?Z-Vކеz왍Nэ{|5 pڶn b p-@sPg]0G7fy-M{GCF'%{4`=$-Ge\ eU:m+Zt'WjO!OAF@ik&t݆ϥ_ e}=]"Wz_.͜E3leWFih|t-wZۍ-uw=6YN{6|} |*={Ѽn.S.z1zjۻTH]흾 DuDvmvK.`V]yY~sI@t?/ϓ. m&["+P?MzovVЫG3-GRR[(!!\_,^%?v@ҵő m`Y)tem8GMx.))A]Y i`ViW`?^~!S#^+ѽGZj?Vģ0.))A꨷lzL*]OXrY`DBBLOj{-MH'ii-ϰ ok7^ )쭡b]UXSְmռY|5*cֽk0B7镹%ڽP#8nȎq}mJr23_>lE5$iwui+ H~F`IjƵ@q \ @#qG0".0" l`„.0! ,AQHN6qzkKJ#o;`Xv2>,tێJJ7Z/*A .@fفjMzkg @TvZH3Zxu6Ra'%O?/dQ5xYkU]Rֽkق@DaS^RSּ5|BeHNN͘p HvcYcC5:y #`οb;z2.!kr}gUWkyZn=f Pvsn3p~;4p˚=ē~NmI] ¾ 0lH[_L hsh_ғߤc_њec)g7VIZ5yrgk̞W#IjӪv>՞y睝M8[|]\շ8M6%|@PZڨI-m>=k='aiRo-x?>Q.}`Ȏ:Wsmu u > .@,&;+!!˱tﭧDQwRW\vF\~Q7>spYw$%A~;~}6¾ g&if_=j,v+UL1(tWake:@Ș>j$Gq2t7S?vL|]u/ .(0E6Mk6hiۺzښOrifޱxm/Gx> Lal%%~{lBsR4*}{0Z/tNIɚpV^#Lf:u@k#RSu =S^ZyuR/.@n&΃z~B=0eg뺆#,Þ[B/?H uUf7y Wy}Bwegל`Wh(||`l`.;Ws?V@"c:iɍL֯PGv6zctM̠':wuW;d=;EveD}9J@B(0iհ bvP1{\P&G7D޴Iy_$-Qjm~Yrr&]CDv%bh|Yzni_ˆR;kg}nJOIIwyuL}{ЌNj}:+3Y?:WJ/N+Rzd=hb;dj͒suݔ@NKMԄ jqzC5@y°hL m;*5ezᕏ=ep XL n?מ:r`۵tŤZ|1v`V뽧_csج'ߤ%oTuumk%%%h)uy]Nk[n 'b2 l.=͜E%gf$[c;s:V-͞WߤWh-j7]4=F-X]>ZLSi[Y*We;Zan(ӇW|e(HNNP5[= r4tP &0<pc#`vTNV GFqvTi*Tyam$ߏWyE*VJKMTfFw>'$-ؽ.Ho.8c"@DADADADADADADADADA~j*֘,N;Pi3599h=goضLgiJ5փy~}&Zd9p֚ e:|hL``b/d9p? fgg+%%hMgXosج, ΩOl0Zh=xdjLmhݻoO[g_l,8a]٭+ӧ0$I]c]:粹:Teꢢ"5a^Kgh,&= =՟^߶“ߢE ܹS J}I%:8 IDAT~,9/ʃPW'Mo}zNƍ쨓zPbNZ~^z=4mswg;5 Y~SVMRXUյڱRf?s:w ;6H:ºi5-maM&O3;1IKeamZh͛7+##v+c ~u~ca]GnF'ټL~PPPbn voC4R,ӟgg %hq}@#M4IÇ Oy^xMZx ) yOw@HkN˖-Sǎmb]X@n+i͖!++K3gd\$mt$^YfJ\8PRF)77Wא!Cl$i:@@_oG I{$# 8磌ŋ91A (Im7֭>}ߴJq7ޗt^ -[ԩSj*}%]&' -ɓ'ꫯVzzvB#;a 7@GxI{j޼ƌ.LÇWBB7`O"I$/@R @eee@۷>}0,ɒ2$53Xs|cS~rpTYYY} kHc %&k.], @ADADADADADADADADA@lT<%''*Lo^={رc5h %$+CnܸQ3fҥK}vUVVs9G R,_{xˇ3o߾;TTTd}馛]uuuG~iԩ@4bnvmvfϞ /Peeeq}}za I~,誫{UWW뮻}_~YƍSMMMYχ֝waw\ďcxꩧtEƍկ_?۷5@u?1kNׯWzz/wy>}zj3 k(ٺuq_Zvf̘:~ ABQ&r|!%KҥKgԞ={<_X-z !CyFUUz~ ABQIIIjݺW$UXXDٳZ~ ABQƍecW$<(~<RSSvZujjjԧOZQu@4 8m&&&jԩg$ď1h ͟?_{768@g =@`)))5o6m3)ѣƌJ;wҿUTT /KZR{~a=@0o<*狔iFɶ[ˎ;T]]OX@?K.ۈxN pppppppppppppppppPfl߾] ,{ァk۶mڿo5BTӦMӴiӴ|r DB2e|An!Dy'tkΝ[A $***t5' "!駟oaDnΝ:t֭[gDШQ06qD;@ x M6v(PiizmZ4ew"@̴ixf [~-Fٱc&IZ2|n!?$@{[HTɏ#@hȎI# _m(F /6Z3z'\r,r!;w2Z3j=~GY7"I$iI.p_"?pN`y DD?: _  Gÿab7J !Bx@0 Bo cG@`1C[@0G @`0C_u V1 aCX>W ` | `!<S `"<. `#c`?cAC4 ?c p#~@0?:08&_MQ1J h#?/`7;I  q 7a wQ A 1 Hp !#<8/#@1Ul7=S=K.4Z?E_$i@!1!E4?`P_  @Bă10#: "aU,xbFY1 [n|n #'vEH:`xb #vD4Y hi.i&EΖv#O H4IŶ}:Ikh @tZRF#(tXҙzZ ?I3l7q@õ|ۍ1,GpuY Ꮿ@hJv#xxk$ v#9 5 }_$c S#=+"K{F*m7`#%H:NRSp6I?sIՖ{Ap$I$I:QRv2$Z @UJ*$]<FO4IENDB`