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Use get_common_prime()

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This commit changes the code in run_pfs() to use the get_common_prime() helper function.
This commit is contained in:
David Cooper 2018-10-17 09:56:54 -04:00
parent 93116f38e7
commit 1fddbc3b44
1 changed files with 6 additions and 19 deletions
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25
testssl.sh
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@ -8443,9 +8443,8 @@ run_pfs() {
local -i nr_supported_ciphers=0 nr_curves=0 nr_ossl_curves=0 i j low high
local pfs_ciphers curves_offered="" curves_to_test temp
local len1 len2 curve_found
local key_bitstring dh_p quality_str
local -i lineno_matched len_dh_p quality
local common_primes_file="$TESTSSL_INSTALL_DIR/etc/common-primes.txt"
local key_bitstring quality_str
local -i len_dh_p quality
local has_dh_bits="$HAS_DH_BITS"
local using_sockets=true
local jsonID="PFS"
@ -8851,23 +8850,11 @@ run_pfs() {
curve_found="${curve_found%%,*}"
fi
fi
if [[ -z "$curves_offered" ]] && [[ -n "$curve_found" ]] && [[ -s "$common_primes_file" ]]; then
if [[ -z "$curves_offered" ]] && [[ -n "$curve_found" ]]; then
# The server is not using one of the groups from RFC 7919.
key_bitstring="$(awk '/-----BEGIN PUBLIC KEY/,/-----END PUBLIC KEY/ { print $0 }' $TEMPDIR/$NODEIP.parse_tls_serverhello.txt)"
dh_p="$($OPENSSL pkey -pubin -text -noout 2>>$ERRFILE <<< "$key_bitstring" | awk '/prime:/,/generator:/' | egrep -v "prime|generator")"
dh_p="$(strip_spaces "$(colon_to_spaces "$(newline_to_spaces "$dh_p")")")"
[[ "${dh_p:0:2}" == "00" ]] && dh_p="${dh_p:2}"
len_dh_p=$((4*${#dh_p}))
debugme tmln_out "len(dh_p): $len_dh_p | dh_p: $dh_p"
dh_p="$(toupper "$dh_p")"
# In the previous line of the match is bascially the hint we want to echo
# the most elegant thing to get the previous line [ awk '/regex/ { print x }; { x=$0 }' ] doesn't work with gawk
lineno_matched=$(grep -n "$dh_p" "$common_primes_file" 2>/dev/null | awk -F':' '{ print $1 }')
if [[ "$lineno_matched" -ne 0 ]]; then
curves_offered="$(awk "NR == $lineno_matched-1" "$common_primes_file" | awk -F'"' '{ print $2 }')"
else
curves_offered="unrecognized group"
fi
get_common_prime "$jsonID" "$key_bitstring" ""
[[ $? -eq 0 ]] && curves_offered="$DH_GROUP_OFFERED" && len_dh_p=$DH_GROUP_LEN_P
fi
if [[ -n "$curves_offered" ]]; then
if [[ ! "$curves_offered" =~ ffdhe ]] || [[ ! "$curves_offered" =~ \ ]]; then
@ -8892,7 +8879,7 @@ run_pfs() {
5) quality_str="INFO" ;;
6|7) quality_str="OK" ;;
esac
if [[ "$curves_offered" == "unrecognized group" ]]; then
if [[ "$curves_offered" =~ Unknown ]]; then
fileout "DHE_groups" "$quality_str" "$curves_offered ($len_dh_p bits)"
else
fileout "DHE_groups" "$quality_str" "$curves_offered"