[openssl-dev] Windows uplink override, PR 1356

[Jim Carroll]

I'm assisting with the port of the python package M2Crypto to use OpenSSL
1.1.0. The latest windows build of python 2.7.12 still does not include
applink.c, which leaves us unable to use BIO_s_fd functions and those
BIO_s_file functions that accept FILE objects.

I'd like to offer patch #1356 (https://github.com/openssl/openssl/pull/1356)

The patch modifies how OPENSSL_Uplink() searches for the applinktable.
Instead of only searching within the process space of the application, it
enables a developer to register an optional applinktable stored in another
module (aka another DLL).

The solution requires the developer to ensure the call to
OPENSSL_SetApplink() is made from an extension that was compiled using the
same threading model as both python and the installed OpenSSL library. But,
because python's distutils system is fully aware of the build environment,
this is a trivial matter for python developers.

The patch includes documentation along with detailed example of how to use
it.


begin 666 smime.p7s
M,( &"2J&2(;W#0$'`J" ,( "`0$Q"S )!@4K#@,"&@4`,( &"2J&2(;W#0$'
M`0``H((.$3""!#8P@@,>H ,"`0("`0$P#08)*H9(AO<-`0$%!0`P;S$+, D&
M`U4$!A,"4T4Q%# 2!@-5! H3"T%D9%1R=7-T($%",28P) 8#500+$QU!9&14
M<G5S="!%>'1E<FYA;"!45% @3F5T=V]R:S$B," &`U4$`Q,9061D5')U<W0@
M17AT97)N86P at 0T$@4F]O=# >%PTP,# U,S Q,#0X,SA:%PTR,# U,S Q,#0X
M,SA:,&\Q"S )!@-5! 83`E-%,10P$@8#500*$PM!9&14<G5S="!!0C$F,"0&
M`U4$"Q,=061D5')U<W0 at 17AT97)N86P at 5%10($YE='=O<FLQ(C @!@-5! ,3
M&4%D9%1R=7-T($5X=&5R;F%L($-!(%)O;W0P@@$B, T&"2J&2(;W#0$!`04`
M`X(!#P`P@@$*`H(!`0"W]QHSYO(`!"TYX$Y;[1^\; _-M?HCML[>FQ$SEZ0I
M3'V3G[U*O)/M`QKCC\_E;5!:UI<IE%J L$EZVRZ5_;C*OS<X+1X^D4&M<%;'
M\$\_Z#*>=,K(D%3IQE\/>)V:0#P.K&&J7A2/GH>A:E#<UYI.KP6SIG&4G'&S
M4& *QQ.=. >&`JCIJ&DF&)"K3+!/(ZLZ3X38W\Z?X6EON]="UVM$Y,>M[FU!
M7W):<0 at WLWEEI%F at E#?W`"\-PI)RVM X<ML4J$7$72I]M[36Q.ZLS1-$M\DK
MW4,`)?IAN6EJ6",1MZ<SCU9U6?7-*==&MPHK9;;30F\5LKA[^^_I75/5-%HG
M`@,!``&C@=PP@=DP'08#51T.!!8$%*V]F'HTM";W^L0F5.\#O> DRU0:, L&
M`U4=#P0$`P(!!C /!@-5'1,!`?\$!3 #`0'_,(&9!@-5'2,$@9$P at 8Z %*V]
MF'HTM";W^L0F5.\#O> DRU0:H7.D<3!O,0LP"08#500&$P)313$4,!(&`U4$
M"A,+061D5')U<W0 at 04(Q)C D!@-5! L3'4%D9%1R=7-T($5X=&5R;F%L(%14
M4"!.971W;W)K,2(P( 8#500#$QE!9&14<G5S="!%>'1E<FYA;"!#02!2;V]T
M@@$!, T&"2J&2(;W#0$!!04``X(!`0"PF^"%)<+6(^(/E@:2G4&8G-F$>8'9
M'EL4!R,V98^PV'>[K$%L1V"#4;#Y,CWG_/8F$\> %J6_6OR'SWAYB2&:XDP'
M"H8UO/+>4<32EK?<?D[N</T<.>L,`E$4+8Z]%N#!WT9UYR2M[/1"M(63<!!G
MNIT&-4H8TRMZS%%"H7ICT>:[H<4KPC:^$PWFO6-^>7NG"0U JVK=CXK#]O:,
M&D(%4=1%]9^G8B%H%2!#/)GG?+TDV*F1%W.(/U8;,3 at 8M'$/FLW(#IZ.+AOA
MC)B#RQ\Q\41,Q at 1S279@#\?XO1> :R[IS$P.6IIY#R *+M6>8R8>59*4V((7
M6GO0O,>/3H8$,(($KS""`Y>@`P(!`@(1`. CRQ42 at U.)K6%N>E1G:R$P#08)
M*H9(AO<-`0$+!0`P;S$+, D&`U4$!A,"4T4Q%# 2!@-5! H3"T%D9%1R=7-T
M($%",28P) 8#500+$QU!9&14<G5S="!%>'1E<FYA;"!45% @3F5T=V]R:S$B
M," &`U4$`Q,9061D5')U<W0 at 17AT97)N86P at 0T$@4F]O=# >%PTQ-#$R,C(P
M,# P,#!:%PTR,# U,S Q,#0X,SA:,(&;,0LP"08#500&$P)'0C$;,!D&`U4$
M"!,21W)E871E<B!-86YC:&5S=&5R,1 P#@8#500'$P=386QF;W)D,1HP& 8#
M500*$Q%#3TU/1$\@0T$@3&EM:71E9#%!,#\&`U4$`Q,X0T]-3T1/(%-(02TR
M-38 at 0VQI96YT($%U=&AE;G1I8V%T:6]N(&%N9"!396-U<F4 at 16UA:6P at 0T$P
M@@$B, T&"2J&2(;W#0$!`04``X(!#P`P@@$*`H(!`0")L0W:>E,93G!2';Q6
MI at 8FM[A)X);G4:OQ\%H3216CM(P;8+QZ44*G>8RD(M\784Z1U78C"A332@)_
MMAT)@&ZE!#W9NKL6_J&'J2Y#4D,6?*\R4,BF3UKI"-C/DR6<>XCH,&3FI/A6
M@/TJ)!0S%YFL1.5IBZ-&!DO",]3I0)\&L+&LDT"YM0B3.IPJ4Z,0VST at 83Q5
M`X[93G8E`B$I^J-\<79/[N%?@>G[5(#;PWLU4K>$WB(]+# M,7]9O5(WL#-I
M+4/K^M:E\9=W9U&,V>XGZ[RE!SAVC*2I./_?C/4#K$F^RO=SF3H/,JN<E3H3
M/0Y&.E=T85"^QD _R^3BGZ(A`@,!``&C@@$7,((!$S ?!@-5'2,$&# 6@!2M
MO9AZ-+0F]_K$)E3O`[W@),M4&C =!@-5'0X$%@04DF%K at N&BH*I/[&?QPJ/W
MM( `P>PP#@8#51T/`0'_! 0#`@&&,!(&`U4=$P$!_P0(, 8!`?\"`0`P'08#
M51TE!!8P% 8(*P8!!04'`P(&""L&`04%!P,$,!$&`U4=( 0*, @P!@8$51T@
M`#!$!@-5'1\$/3 [,#F at -Z UAC-H='1P.B\O8W)L+G5S97)T<G5S="YC;VTO
M061D5')U<W1%>'1E<FYA;$-!4F]O="YC<FPP-08(*P8!!04'`0$$*3 G,"4&
M""L&`04%!S !AAEH='1P.B\O;V-S<"YU<V5R=')U<W0N8V]M, T&"2J&2(;W
M#0$!"P4``X(!`0`;*FZL5<$ZJXC%V.W-5?.J:V$KP D0(YD/Q69J;['UM+5W
M7@\"80#??07^$K.D@( `_/L=6VIR`@I!O 6ZP5C5)L+JU4V$^_Z"F,]8&^,B
M8YQ2^+L%-JM]6*7>JSMCY=K5<^_LX/M[XJ/_\$(CG,JVC4T^Y$L8`[*H+=38
MNT)+D&F%$-NF-S3H>^ !$*6<RCK'GT^(-&Z*9= :BKNIW,K*-M'T_,)D*36O
MUK&G<1'2`T.QCSZ:[)XR4_1VDLJ&- >Y+,KF'$K8F0W!AN*0DOM:0FHC(1#I
M9<?UU;M^ZHR%( )BZM$Z!RQ9Q9DS\CB)Y;;I%GH?>13V2A :)OI\BON;,((%
M(#""! B@`P(!`@(1`-4+#]T2278FC)\!=Y87SN8P#08)*H9(AO<-`0$+!0`P
M at 9LQ"S )!@-5! 83`D=",1LP&08#500($Q)'<F5A=&5R($UA;F-H97-T97(Q
M$# .!@-5! <3!U-A;&9O<F0Q&C 8!@-5! H3$4-/34]$3R!#02!,:6UI=&5D
M,4$P/P8#500#$SA#3TU/1$\@4TA!+3(U-B!#;&EE;G0 at 075T:&5N=&EC871I
M;VX at 86YD(%-E8W5R92!%;6%I;"!#03 >%PTQ-C Q,3,P,# P,#!:%PTQ-S Q
M,3(R,S4Y-3E:," Q'C <!@DJADB&]PT!"0$6#VII;4!C87)R;VQL+F-O;3""
M`2(P#08)*H9(AO<-`0$!!0`#@@$/`#""`0H"@@$!`-K\XS'GF('[$TPZLMT=
MY]ID(UGI at 9^?K.$F3&?)JS.0Q"6)OD@;8S<+1#[2QFG.S045<BKJ-D6O9FQ\
M<*2_A$&HWT6R`S' 7$<4M7HIO_"G at U#-`1,6W2HZ`,L53(EL?:P_[H%Y/6VB
MJU\01/0U<U7T/"K$+CFK\>HV/H^"EPS!W)_L#3<"[3T(BZ3LDTHN"#(\B5A1
M^VO2XN77=+Z\+IU=@1UR!40:,<7&)5,P,O1STRE:UFFYLS65=GVT*:ZY[YK9
M':(_+75)?UCOJQ: M-%=9XH<_VNPXG^;7/:6"2-DDFNH3JMIBVKH$1G/E$ 9
MD8XE<3>#8^@.89*P$#)O+'$"`P$``:."`=<P@@'3,!\&`U4=(P08,!: %))A
M:X+AHJ"J3^QG\<*C][2 `,'L,!T&`U4=#@06!!0P:UC0J,N<!7>SB(9<*/G'
MV*_ SS .!@-5'0\!`?\$! ,"!: P# 8#51T3`0'_! (P`# =!@-5'24$%C 4
M!@@K!@$%!0<#! 8(*P8!!04'`P(P1 at 8#51T@!#\P/3 [!@PK!@$$`;(Q`0(!
M`P4P*S I!@@K!@$%!0<"`18=:'1T<',Z+R]S96-U<F4N8V]M;V1O+FYE="]#
M4%,P708#51T?!%8P5#!2H%"@3H9,:'1T<#HO+V-R;"YC;VUO9&]C82YC;VTO
M0T]-3T1/4TA!,C4V0VQI96YT075T:&5N=&EC871I;VYA;F1396-U<F5%;6%I
M;$-!+F-R;#"!D 8(*P8!!04'`0$$@8,P at 8 P6 8(*P8!!04', *&3&AT=' Z
M+R]C<G0N8V]M;V1O8V$N8V]M+T-/34]$3U-(03(U-D-L:65N=$%U=&AE;G1I
M8V%T:6]N86YD4V5C=7)E16UA:6Q#02YC<G0P) 8(*P8!!04', &&&&AT=' Z
M+R]O8W-P+F-O;6]D;V-A+F-O;3 :!@-5'1$$$S 1 at 0]J:6U 8V%R<F]L;"YC
M;VTP#08)*H9(AO<-`0$+!0`#@@$!`&7_YE!"6I-N>DE*'QH34=CM%+[K`1M]
M]CL[U/FRY5[^LX>0V\F[3S&JAG>8?S4(\8%YC7"@FZN?&[XNG;*71FB1VC5\
M[C at 1T1/1VFB^.U_DY "31W;:;K"NZ]K)Q3#HO(@&45E,YCJ!NY$AC!C\IGQ:
M2/NGP"_K'85*^(.K.&Q*INS)?2E26GN'Y^%BLAID at HA<[DL&']YY*Z 9#&;V
MFJ3HYV^Y[HF)FFH-]D/]<5G):'.LJD*"]IJWI4,'-BQ;060E4[7[NKAN!^P\
MBTU&T;&8EQ; '\I'[_^.1-;+K'J.:_]/&2]A0 at L9SC^8NO*8S_4,>"4TRIOH
MI'J>$[1$P4TQ@@0C,(($'P(!`3"!L3"!FS$+, D&`U4$!A,"1T(Q&S 9!@-5
M! @3$D=R96%T97(@36%N8VAE<W1E<C$0, X&`U4$!Q,'4V%L9F]R9#$:,!@&
M`U4$"A,10T]-3T1/($-!($QI;6ET960Q03 _!@-5! ,3.$-/34]$3R!32$$M
M,C4V($-L:65N="!!=71H96YT:6-A=&EO;B!A;F0 at 4V5C=7)E($5M86EL($-!
M`A$`U0L/W1))=B:,GP%WEA?.YC )!@4K#@,"&@4`H(("1C 8!@DJADB&]PT!
M"0,Q"P8)*H9(AO<-`0<!,!P&"2J&2(;W#0$)!3$/%PTQ-C W,C<Q-#0U,S1:
M,",&"2J&2(;W#0$)!#$6!!24M)D]N&9US*]IH=DN==WUU[1@;3!;!@DJADB&
M]PT!"0\Q3C!,, H&""J&2(;W#0,', X&""J&2(;W#0,"`@(`@# -!@@JADB&
M]PT#`@(!0# '!@4K#@,"!S -!@@JADB&]PT#`@(!*# '!@4K#@,"&C"!P at 8)
M*P8!! &"-Q $,8&T,(&Q,(&;,0LP"08#500&$P)'0C$;,!D&`U4$"!,21W)E
M871E<B!-86YC:&5S=&5R,1 P#@8#500'$P=386QF;W)D,1HP& 8#500*$Q%#
M3TU/1$\@0T$@3&EM:71E9#%!,#\&`U4$`Q,X0T]-3T1/(%-(02TR-38 at 0VQI
M96YT($%U=&AE;G1I8V%T:6]N(&%N9"!396-U<F4 at 16UA:6P at 0T$"$0#5"P_=
M$DEV)HR?`7>6%\[F,('$!@LJADB&]PT!"1 ""S&!M*"!L3"!FS$+, D&`U4$
M!A,"1T(Q&S 9!@-5! @3$D=R96%T97(@36%N8VAE<W1E<C$0, X&`U4$!Q,'
M4V%L9F]R9#$:,!@&`U4$"A,10T]-3T1/($-!($QI;6ET960Q03 _!@-5! ,3
M.$-/34]$3R!32$$M,C4V($-L:65N="!!=71H96YT:6-A=&EO;B!A;F0 at 4V5C
M=7)E($5M86EL($-!`A$`U0L/W1))=B:,GP%WEA?.YC -!@DJADB&]PT!`0$%
M``2"`0"9(2\L^&Z$=;)N6TYM0="\E<)E_F5C,CH,.D:1T;M!%1D)%.?+S^5S
MR]DY'L# A at 8M7IG.,3";1(2CG$IOLOIK8D+S<]-L>Q4*9RX]WTL8,.#)9&5(
MH:3L,J at A/U!ZM1NA4,V>13UG()X*/O*9LN&?*R1[2PB%N+4C;AE+I15KE!7@
M-@$'0V\%+C6M0^>=K9S:A"(H,W9C07A./J=?.:_<\LWQ5^AQ9&35E#^8>;)/
M4;GP':A*)RJ=S.TH91CMG:L&Y3"1QB$A3UK?I55K\YO5R:"B^B.;!99]M0/C
J/\3FUH4%M4'I";QH1+H$L#3*^,^JYU?:+K,VW^T%S>JQ0[VQ````````
`
end