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#!/bin/sh
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# Quit out if anything fails.
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set -e
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# Clean out patent-or-otherwise-encumbered code.
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# MDC-2: 4,908,861 13/03/2007 - expired, we do not remove it but do not enable it anyway
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# IDEA: 5,214,703 25/05/2010
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# RC5: 5,724,428 03/03/2015
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# EC: ????????? ??/??/2015
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# Remove assembler portions of IDEA, MDC2, and RC5.
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(find crypto/{idea,rc5}/asm -type f | xargs -r rm -fv)
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# IDEA, MDC2, RC5, EC.
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for a in idea rc5 ec ecdh ecdsa; do
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for c in `find crypto/$a -name "*.c" -a \! -name "*test*" -type f` ; do
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echo Destroying $c
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> $c
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done
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done
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for c in `find crypto/evp -name "*_rc5.c" -o -name "*_idea.c" -o -name "*_ecdsa.c"`; do
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echo Destroying $c
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> $c
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done
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for h in `find crypto ssl apps test -name "*.h"` ; do
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echo Removing IDEA, RC5, and EC references from $h
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cat $h | \
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awk 'BEGIN {ech=1;} \
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/^#[ \t]*ifndef.*NO_IDEA/ {ech--; next;} \
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/^#[ \t]*ifndef.*NO_RC5/ {ech--; next;} \
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/^#[ \t]*ifndef.*NO_EC/ {ech--; next;} \
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/^#[ \t]*ifndef.*NO_ECDH/ {ech--; next;} \
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/^#[ \t]*ifndef.*NO_ECDSA/ {ech--; next;} \
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/^#[ \t]*if/ {if(ech < 1) ech--;} \
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{if(ech>0) {;print $0};} \
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/^#[ \t]*endif/ {if(ech < 1) ech++;}' > $h.hobbled && \
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mv $h.hobbled $h
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done
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# Make the makefiles happy.
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touch crypto/rc5/asm/rc5-586.pl
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