53 lines
1.5 KiB
Plaintext
53 lines
1.5 KiB
Plaintext
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#!/bin/sh
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# Clean out patent-protected code.
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# RSA: 4,405,829 20/09/2000
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# MDC-2: 4,908,861 13/03/2007
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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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# RSA's patented parts.
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function nullify_rsa() {
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echo Removing patented parts from crypto/rsa/rsa_eay.c
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cat crypto/rsa/rsa_eay.c | \
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awk 'BEGIN {ech=1;} \
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/#if/ {if(ech < 1) ech--;} \
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/#ifndef.*RSA_NULL/ {ech--;} \
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{if(ech>0) {;print $0};} \
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/#endif/ {if(ech < 1) ech++;}' > crypto/rsa/nullrsa_eay.c && \
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mv crypto/rsa/nullrsa_eay.c crypto/rsa/rsa_eay.c
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rm -fr crypto/rsa/asm
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}
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if [ `date +%Y%m%d` -lt 20000921 ] ; then
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nullify_rsa
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fi
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# Bah. Assembler is hard to port.
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(find crypto/{idea,mdc2,rc5,md2}/asm -type f | xargs -r rm -fv)
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# IDEA, MDC2 and RC5.
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for c in `find crypto/{idea,mdc2,rc5,md2} -name "*.c" -a \! -name "*test*" -type f` ; do
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echo Destroying $c
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cat /dev/null > $c
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done
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for c in `find crypto/evp -name "*_r5.c" -o -name "*_i.c" -o -name "*_mdc2.c" -o -name "*_md2.c"`; do
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echo Destroying $c
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cat /dev/null > $c
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done
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for h in `find include crypto ssl apps test -name "*.h"` ; do
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echo Removing IDEA, MDC2, MD2 and RC5 references from $h
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cat $h | \
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awk 'BEGIN {ech=1;} \
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/#[ \t]*if/ {if(ech < 1) ech--;} \
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/#[ \t]*ifndef.*NO_IDEA/ {ech--;} \
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/#[ \t]*ifndef.*NO_MDC2/ {ech--;} \
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/#[ \t]*ifndef.*NO_MD2/ {ech--;} \
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/#[ \t]*ifndef.*NO_RC5/ {ech--;} \
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{if(ech>0) {;print $0};} \
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/#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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