mirror of
https://github.com/drwetter/testssl.sh.git
synced 2025-10-31 07:40:58 +01:00
95 lines
3.0 KiB
Bash
Executable File
95 lines
3.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# PoC for checking the ellipticale curves negotiated
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# x448 and x25519 are missing, others are not supported
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# License see testssl.sh
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readonly RUN_DIR=$(dirname "$0")
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test_openssl_suffix() {
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local naming_ext="$(uname).$(uname -m)"
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local uname_arch="$(uname -m)"
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local myarch_suffix=""
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[[ $uname_arch =~ 64 ]] && myarch_suffix=64 || myarch_suffix=32
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if [[ -f "$1/openssl" ]] && [[ -x "$1/openssl" ]]; then
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OPENSSL="$1/openssl"
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return 0
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elif [[ -f "$1/openssl.$naming_ext" ]] && [[ -x "$1/openssl.$naming_ext" ]]; then
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OPENSSL="$1/openssl.$naming_ext"
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return 0
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fi
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return 1
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}
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find_openssl_binary() {
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# 0. check environment variable whether it's executable
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if [[ -n "$OPENSSL" ]] && [[ ! -x "$OPENSSL" ]]; then
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pr_warningln "\ncannot find specified (\$OPENSSL=$OPENSSL) binary."
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outln " Looking some place else ..."
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elif [[ -x "$OPENSSL" ]]; then
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: # 1. all ok supplied $OPENSSL was found and has excutable bit set -- testrun comes below
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elif test_openssl_suffix $RUN_DIR; then
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: # 2. otherwise try openssl in path of testssl.sh
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elif test_openssl_suffix ../$RUN_DIR; then
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: # 2. otherwise try openssl in path of testssl.sh
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elif test_openssl_suffix ../$RUN_DIR/bin; then
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: # 3. otherwise here, this is supposed to be the standard --platform independed path in the future!!!
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elif test_openssl_suffix "$(dirname "$(which openssl)")"; then
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: # 5. we tried hard and failed, so now we use the system binaries
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fi
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# no ERRFILE initialized yet, thus we use /dev/null for stderr directly
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$OPENSSL version -a 2>/dev/null >/dev/null
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if [[ $? -ne 0 ]] || [[ ! -x "$OPENSSL" ]]; then
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echo "\ncannot exec or find any openssl binary"
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exit 1
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fi
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echo
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echo "using $OPENSSL"
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echo
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}
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VERBOSE=false
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if [[ $1 == "-v" ]]; then
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VERBOSE=true
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shift
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fi
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HN="$1"
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[ -z "$HN" ] && HN=testssl.sh
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find_openssl_binary
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ERRFILE=$(mktemp /tmp/curve_tester.R.XXXXXX) || exit -6
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TMPFILE=$(mktemp /tmp/curve_tester.T.XXXXXX) || exit -6
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for curve in $($OPENSSL ecparam -list_curves | awk -F':' '/:/ { print $1 }'); do
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#if bin/openssl.Linux.x86_64 s_client -curves $curve -connect $HN:443 -servername $HN </dev/null 2>/dev/null | grep -q "BEGIN CERTIFICATE" ; then
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# echo 'YES'
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#else
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# echo '--'
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#fi
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$OPENSSL s_client -cipher ECDH -curves $curve -connect $HN:443 -servername $HN </dev/null 2>$ERRFILE | grep "Server Temp Key:" >$TMPFILE
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if [[ $? -eq 0 ]]; then
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printf "$curve: "
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cat $TMPFILE | sed 's/^.*Server Temp Key: //'
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else
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if grep -q 'Error with' $ERRFILE; then
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if "$VERBOSE"; then
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echo "$curve: no client support"
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fi
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else
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echo "$curve: --"
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fi
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fi
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done
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rm -f $ERRFILE $TMPFILE
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# vim:ts=5:sw=5:expandtab
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# $Id: curves.bash,v 1.3 2016/07/09 12:22:13 dirkw Exp $
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