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Merge pull request #674 from dcooper16/fix_client_simulation

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Fix client simulation
This commit is contained in:
Dirk Wetter 2017-03-24 18:45:40 +01:00 committed by GitHub
commit edaffc85ec
1 changed files with 19 additions and 17 deletions
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36
testssl.sh
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@ -3388,29 +3388,31 @@ create_client_simulation_tls_clienthello() {
len_extensions=2*$(hex2dec "${tls_handshake_ascii:$offset:4}")
offset=$offset+4
for (( 1; offset < tls_handshake_ascii_len; 1 )); do
extension_type="${tls_handshake_ascii:$offset:4}"
offset=$offset+4
len_extension=2*$(hex2dec "${tls_handshake_ascii:$offset:4}")
extension_type="${tls_handshake_ascii:$offset:4}"
offset=$offset+4
len_extension=2*$(hex2dec "${tls_handshake_ascii:$offset:4}")
if [[ "$extension_type" != "0000" ]]; then
if [[ "$extension_type" != "0000" ]]; then
# The extension will just be copied into the revised ClientHello
sni_extension_found=true
offset=$offset-4
len=$len_extension+8
tls_extensions+="${tls_handshake_ascii:$offset:$len}"
offset=$offset+$len
elif [[ -n "$SNI" ]]; then
# Create a server name extension that corresponds to $SNI
len_servername=${#NODE}
hexdump_format_str="$len_servername/1 \"%02x\""
servername_hexstr=$(printf $NODE | hexdump -v -e "${hexdump_format_str}")
# convert lengths we need to fill in from dec to hex:
len_servername_hex=$(printf "%02x\n" $len_servername)
len_sni_listlen=$(printf "%02x\n" $((len_servername+3)))
len_sni_ext=$(printf "%02x\n" $((len_servername+5)))
tls_extensions+="000000${len_sni_ext}00${len_sni_listlen}0000${len_servername_hex}${servername_hexstr}"
offset=$offset+$len_extension+4
fi
else
sni_extension_found=true
if [[ -n "$SNI" ]]; then
# Create a server name extension that corresponds to $SNI
len_servername=${#NODE}
hexdump_format_str="$len_servername/1 \"%02x\""
servername_hexstr=$(printf $NODE | hexdump -v -e "${hexdump_format_str}")
# convert lengths we need to fill in from dec to hex:
len_servername_hex=$(printf "%02x\n" $len_servername)
len_sni_listlen=$(printf "%02x\n" $((len_servername+3)))
len_sni_ext=$(printf "%02x\n" $((len_servername+5)))
tls_extensions+="000000${len_sni_ext}00${len_sni_listlen}0000${len_servername_hex}${servername_hexstr}"
offset=$offset+$len_extension+4
fi
fi
done
if ! $sni_extension_found; then