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easytls
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easytls
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#!/bin/sh
# Copyright - negotiable
#
# VERBATUM_COPYRIGHT_HEADER_INCLUDE_NEGOTIABLE
# Easy-TLS -- A Shell-based Easy-RSA extension utility to help manage
# * OpenVPN specific TLS keys
# * Easy-RSA based x509 security credentials
# * Verified 'inline' combined OpenVPN node packages
#
# Copyright (C) 2020 Richard Bonhomme (Friday 13th of March 2020)
# https://github.com/TinCanTech/easy-tls
# All Rights reserved.
#
# This code is released under version 2 of the GNU GPL
# See LICENSE of this project for full licensing details.
#
# Acknowledgement:
# This utility is "written in the style of" and "borrows heavily from" Easy-RSA
#
# Easy-TLS is inspired by syzzer
# See: https://github.com/OpenVPN/openvpn/blob/master/doc/tls-crypt-v2.txt
#
# VERBATUM_COPYRIGHT_HEADER_INCLUDE_NEGOTIABLE
#
# Easy-TLS requirements:
# + Easy-RSA Version 3.0.8
# + OpenVPN Version 2.5
# Set the Easy-TLS version
easytls_version () {
unset -v EASYTLS_VERBOSE
config_use || :
print "Easy-TLS ${EASYTLS_VERSION} (${EASYTLS_STATUS})"
} # => easytls_version ()
############################################################################
#
# EASYTLS HELP Section
#
# Help/usage output to stdout
usage() {
print "
Easy-TLS usage and overview
USAGE: easytls [options] COMMAND [command-options]
A list of commands is shown below. To get detailed usage and help for a
command, use:
./easytls help COMMAND
For a listing of options that can be supplied before the command, use:
./easytls help options
For a list of abbreviated command names, use:
./easytls help abb
For a list of configurable options, use:
./easytls help config
Here is the list of commands available with a short syntax reminder.
Use the 'help' command above to get full usage details.
build :Inter-active menu to build TLS keys
inline :Inter-active menu to build Inline files
remove :Inter-active menu to remove TLS keys and Inline files
script :Inter-active menu to configure Server scripts
selfsign :Inter-active menu to build and inline self-signed certificates
init | init-tls <hash_algorithm> no-ca
cf | config
|
sss | self-sign-server <server_filename_base> (No-CA mode only)
ssc | self-sign-client <client_filename_base> (No-CA mode only)
|
bta | build-tls-auth
btc | build-tls-crypt
bc2s | build-tls-crypt-v2-server <server_common_name>
bc2c | build-tls-crypt-v2-client
| <server_common_name> <client_common_name> <HW-ADDR> <IP-ADDR>
|
ita | inline-tls-auth <filename_base> <key_direction> [ cmd-opts ]
itc | inline-tls-crypt <filename_base> [ cmd-opts ]
ic2 | inline-tls-crypt-v2 <filename_base> [ cmd-opts ]
|
bc2gc | build-tls-crypt-v2-group-client
| <server_common_name> <client_group_name> <HW-ADDR> <IP-ADDR>
ic2gc | inline-tls-crypt-v2-group-client
| <client_common_name> <client_group_name> [ cmd-opts ]
|
s | status [ cmd-opts ]
rk | remove-tlskey <client_filename_base>
rgk | remove-group-tlskey <client_filename_base> <Group-Name>
ri | remove-inline <filename_base>
rgi | remove-group-inline <Client-Name> <Group-Name>
is | inline-show <filename_base>
| inline-index-rebuild
ix | inline-expire <filename_base>
cx | cert-expire <filename_base> | <ca>
d | disable <filename_base> (Or display the current disabled list)
e | enable <filename_base> (Or display the current disabled list)
| disabled-list-rehash
sid | save-id
ver | version
| upgrade
Easy-TLS also has a useful Howto and wiki with expanded help and examples:
* https://github.com/TinCanTech/easy-tls/blob/master/easytls-howto-ii.md
* https://github.com/TinCanTech/easy-tls/wiki"
# collect/show dir status:
err_source="Not defined: vars autodetect failed and no value provided"
work_dir="${EASYRSA:-$err_source}"
pki_dir="${EASYRSA_PKI:-$err_source}"
tls_dir="${EASYTLS_PKI:-$err_source}"
print "
DIRECTORY STATUS (commands would take effect on these locations)
EASYTLS: ${work_dir}
PKI: ${pki_dir}
TLS: ${tls_dir}"
} # => usage()
# Detailed command help
# When called with no args, calls usage(), otherwise shows help for a command
cmd_help() {
text=""
opts=""
case "${1}" in
init|init-tls) text="
init-tls <hash_algorithm> no-ca
Removes & re-initializes the TLS-key directory.
* Easy-RSA is also required to be initialised.
<hash_algorithm> - Specify a hash algorithm.
Default SHA256 - Alternative SHA1
nc|noca|no-ca - Use Easy-TLS without an Easy-RSA CA Certificate Authority.
* Use 'no-ca' to build self-signed certificates and fingerprints.
If you have upgraded an old copy of Easy-TLS to the latest version
then it may be possible to use 'easytls upgrade' or 'easytls rehash'
to establish a functioning easytls data directory." ;;
build|inline|remove|script|selfsign) text="
Inter-active menus to build, inline, remove
and configure various Easy-TLS files" ;;
bta|build-tls-auth) text="
build-tls-auth
Create an OpenVPN TLS auth PSK (tls-auth.key)" ;;
btc|build-tls-crypt) text="
build-tls-crypt
Create an OpenVPN TLS crypt PSK (tls-crypt.key)" ;;
btc2s|btv2s|btcv2s|build-tls-crypt-v2-server) text="
build-tls-crypt-v2-server <server_filename_base>
Create an OpenVPN TLS crypt V2 Server key" ;;
btc2c|btv2c|btcv2c|build-tls-crypt-v2-client)
EASYTLS_github="https://github.com/TinCanTech/easy-tls/wiki"
EASYTLS_url="15-=-Multiple-TLS-Crypt-V2-Keys-per-X509-Certificate"
text="
build-tls-crypt-v2-client
<server_filename_base> <client_filename_base> <HW-ADDR> <HW-ADDR>
Create an OpenVPN TLS crypt V2 Client key
The metadata can also be used to specify Hardware Addresses which this
key is allowed to be used from. Use easytls-cryptv2-client-connect.sh
to verify the HW-ADDR.
Note: ALL scripts are required to successfully verify Hardware.
Each X509 Client can have multiple TLS-Crypt-V2 keys by using option:
-k|--subkey-name=<NAME>
This allows an unlimited number of keys, see the following wiki article
for further details:
${EASYTLS_github}/${EASYTLS_url}" ;;
bc2gs|btc2gs|btv2gs|btcv2gs|build-tls-crypt-v2-group-server)
text="
build-tls-crypt-v2-group-server <Server_Group_Name>
The Server Group name is simply a name for the key file." ;;
bc2gc|btc2gc|btv2gc|btcv2gc|build-tls-crypt-v2-group-client)
text="
build-tls-crypt-v2-group-client <Server_Group_Name> <Client_Group_Name>
The Client Group name is simply a name for the key file." ;;
rt|rtk|remove-tlskey) text="
remove-tlskey <client_filename_base>
Remove a TLS-Crypt-V2 Client key and update the tlskey-index." ;;
rgt|rgk|rgtk|remove-group-tlskey) text="
remove-group-tlskey <Group-Key-Name>
Remove a TLS-Crypt-V2 GROUP Client key and update the tlskey-index." ;;
sid|save-id) text="
save-id [ no options ]
Save the CA-Identity to easytls/easytls-ca-identity.txt
CA-Identity is the Hex ONLY value of the CA finger print.
This can then by used by easytls-cryptv2-verify.sh as a time-saver
by not needing to load OpenSSL to generate the CA fingerprint.
Combining this with 'easytls-cryptv2-verify.sh --verify-via-index',
OpenSSL binary never needs to be loaded by easytls-cryptv2-verify.sh
See EasyTLS Howto for an example." ;;
s|status) text="
status [ cmd-opts ]
Compare Easy-RSA certificate(s) to Easy-TLS inline(s) status"
opts="
val|valid - List only Easy-RSA valid certificates
rev|revoked - List only Easy-RSA revoked certificates
inl|inline - List only Easy-TLS inline files
inv|invalid - List only Easy-TLS invalid inline files
ren|renewed - List only Easy-RSA renewed certificates
tls|tlskeys - List only Easy-TLS known TLS keys" ;;
ita|inline-tls-auth) text="
inline-tls-auth <filename_base> <key_direction> [ cmd-opts ]
Create a complete OpenVPN node package from Easy-RSA and Easy-TLS files
for VPN node <filename_base> using the Easy-TLS TLS auth file
<key_direction> '0' or '1' (key-direction is mandatory)"
opts="
no-key - do not require an x509 key (default: key is required)
add-dh - inline Diffie-Hellman parameters file (Server only)
Default file is easyrsa3/pki/dh.pem
To specify an alternative file use the --dh option" ;;
itc|inline-tls-crypt) text="
inline-tls-crypt <filename_base> [ cmd-opts ]
Create a complete OpenVPN node package from Easy-RSA and Easy-TLS files
for VPN node <filename_base> using the Easy-TLS TLS crypt file"
opts="
no-key - do not require an x509 key (default: key is required)
add-dh - inline Diffie-Hellman parameters file (Server only)
Default file is easyrsa3/pki/dh.pem
To specify an alternative file use the --dh option" ;;
itc2|itv2|itcv2|inline-tls-crypt-v2) text="
inline-tls-crypt-v2 <filename_base> [ cmd-opts ]
Create a complete OpenVPN node package from Easy-RSA and Easy-TLS files
for VPN node <filename_base> using the Easy-TLS TLS crypt v2 file"
opts="
no-key - do not require an x509 key (default: key is required)
add-dh - inline Diffie-Hellman parameters file (Server only)
Default file is easyrsa3/pki/dh.pem
To specify an alternative file use the --dh option
no-md - Do not add public metadata details to inline file
add-hw - Include hardware address in metadata details" ;;
ic2gc|itv2gc|itcv2gc|inline-tls-crypt-v2-group-client) text="
inline-tls-crypt-v2-group-client
<client_common_name> <client_group_name> [ cmd-opts ]
Create a complete OpenVPN node package from Easy-RSA and Easy-TLS files
for VPN node <client_common_name> using the Easy-TLS GROUP key file"
opts="
no-key - do not require an x509 key (default: key is required)
add-dh - inline Diffie-Hellman parameters file (Server only)
Default file is easyrsa3/pki/dh.pem
To specify an alternative file use the --dh option
no-md - Do not add public metadata details to inline file
add-hw - Include hardware address in metadata details" ;;
ri|ril|remove-inline) text="
remove-inline <filename_base>
Delete <filename_base>.inline and update the inline-index
When an Easy-RSA certificate is revoked then the inline file is invalid" ;;
rgi|rgil|remove-group-inline) text="
remove-group-inline <Client-Name> <Group-Name>
Delete <Client-Name>-<Group-Name>.inline and update the inline-index" ;;
is|inline-show) text="
inline-show <filename_base>
Copy <filename_base>.inline to stdout" ;;
inline-index-rebuild) text="
inline-index-rebuild
Rebuild easytls-index.txt
If you need to do this then you may have found a bug, please
raise an issue https://github.com/TinCanTech/easy-tls/issues" ;;
ix|inline-expire) text="
inline-expire <filename_base>
Display inline expiry Date for <filename_base>"
opts="
If no <filename_base> is given then list all inline expiry Dates" ;;
cx|cert-expire) text="
cert-expire <filename_base> | <ca>
Display certificate expiry Date for <filename_base>"
opts="
If <filename_base> is 'ca' then show ca.crt expiry
If no <filename_base> is given then list all certificate expiry Dates" ;;
d|disable) text="
d|disable <filename_base>
Add serial number for <filename_base> to the disabled list
for immediate use by the easytls-cryptv2-verify.sh script.
This also supports --sub-key-name for clients with multiple keys.
If no <filename_base> is given then show the disabled-list." ;;
e|enable) text="
e|enable <filename_base>
Remove serial number for <filename_base> from the disabled list
for immediate use by the easytls-cryptv2-verify.sh script.
This also supports --sub-key-name for clients with multiple keys.
If no <filename_base> is given then show the disabled-list." ;;
rehash) text="
rehash
Rehash the master-hash if the current hash is corrupted.
These test commands also exist:
gmh|generate-master-hash - Generate your current Master Hash.
vmh|verify-master-hash - Verify your current Master Hash.
smh|save-master-hash - Save your current Master Hash." ;;
sss|self-sign-server) text="
self-sign-server
Build a self signed server certificate and key.
Also see 'help options' for: -r|--ss-peer-fingerprint=<CommonName>" ;;
ssc|self-sign-client) text="
self-sign-client
Build a self signed client certificate and key.
Also see 'help options' for: -r|--ss-peer-fingerprint=<CommonName>" ;;
upgrade) text="
upgrade
To upgrade from an older version of Easy-TLS which did not create
the required folders and files. Very limited usage." ;;
options)
opt_usage ;;
abb)
opt_abbreviations ;;
cf|cfg|config)
opt_config ;;
ver|version) text="
Show version information." ;;
"") usage ;;
*) text="
Unknown command: '${1}' (try without commands for a list of commands)" ;;
esac
# display the help text
[ -z "${text}" ] || print "${text}"
[ -z "${opts}" ] || print "
cmd-opts is an optional set of command options from this list:
${opts}"
easytls_verbose
} # => cmd_help()
# Options usage
opt_usage() {
print "
Easy-TLS Global Option Flags
The following options may be provided before the command. Options specified
at runtime override env-vars and any 'vars' file in use. Unless noted,
non-empty values to options are mandatory.
General options:
-V Version
--batch Set automatic (no-prompts when possible) mode.
-v|--verbose Verbose output.
-s|--silent Silence all message output except prompts.
-p|--pki-dir=<DIR> Declare the EasyRSA PKI directory.
--vars='FILE' Define a specific 'vars' file to use for Easy-RSA config.
--dh='FILE' Define an alternate Diffie-Hellman parameters file.
-n|--no-auto-check For performance you can disable auto-check.
-y|--why-disable-file-hash
To temporarily disable file hash verification.
-g|--custom-group=<GROUP-NAME>
<CUSTOM-GROUP> is an optional single word which will be used
in .inline files and TLS-Crypt-V2 client key metadata to identify
the group to which this TLS-Crypt-V2 client key belongs.
Once set and used, the <CUSTOM-GROUP> must not be changed.
The <CUSTOM-GROUP> is also matched in easytls-cryptv2-verify.sh
by using the command line switch --c|custom-group=XYZ
-k|--subkey|--sub-key-name=<SUBKEY-NAME>
This allows for one single X509 client certificate to have multiple
TLS-Crypt-V2 client keys associated with it. For example, the same
X509 certificate can be used from different locations with unique
TLS-Crypt-V2 client keys.
-a|--ss-age=<AGE> Self-signed certificate age. (Default: 3650 days)
-w|--ss-password Prompt for a password to encrypt a self-signed key.
-c|--ss-eccurve=<CURVE_NAME>
Specify an alternate Elliptic Curve for a self-signed key.
(Default: secp384r1)
-r|--ss-peer-fingerprint=<CommonName>
When inlining a self-signed client certificate, specify the commonName
of the server certificate to share fingerprints of each node.
The fingerprint of the server will be added to the client inline file
and the fingerprint of the client will be added to the server inline file.
-i|--inline When building a TLS Crypt V2 key, also build the Inline file.
(Fix: This only accepts default options for inline-tls-crypt-v2)
-t|--tmp-dir=<DIR> Temp directory where server-scripts write data.
Default: *nix /tmp/easytls
Windows C:/Windows/Temp/easytls
-b|--base-dir=<DIR> Path to OpenVPN base directory. (Windows Only)
Default: C:/Progra~1/OpenVPN
-o|--ovpnbin-dir=<DIR> Path to OpenVPN bin directory. (Windows Only)
Default: C:/Progra~1/OpenVPN/bin
-e|--ersabin-dir=<DIR> Path to Easy-RSA3 bin directory. (Windows Only)
Default: C:/Progra~1/Openvpn/easy-rsa/bin
"
} # => opt_usage()
# Option abbreviations
opt_abbreviations () {
print "
Easy-TLS abbreviations:
config - cf | cfg
init-tls - init
build-tls-auth - bta
build-tls-crypt - btc
build-tls-crypt-v2-server - bc2s | btc2s | btv2s | btcv2s
build-tls-crypt-v2-client - bc2c | btc2c | btv2c | btcv2c
build-tls-crypt-v2-group-server - bc2gs | btc2gs | btcv2gs
build-tls-crypt-v2-group-client - bc2gc | btc2gc | btcv2gc
remove-tlskey - rt | rk | rtk
save-id - sid
status - s
Easy-RSA valid certificates - val | valid
Easy-RSA revoked certificates - rev | revoked
Easy-TLS inline files - inl | inline
Easy-TLS invalid inline files - inv | invalid
Easy-RSA renewed certificates - ren | renewed
Easy-TLS known TLS keys - tls | tlskeys
inline-tls-auth - ita
inline-tls-crypt - itc
inline-tls-crypt-v2 - ic2 | itc2 | itv2 | itcv2
inline-tls-crypt-v2-group-client - ic2gc | itc2gc | itcv2gc
remove-inline - ri | ril
remove-group-inline - rgi | rgil
inline-show - is
inline-expire - ix
cert-expire - cx
disable - d
enable - e
rehash - No abbreviation
self-sign-server - sss
self-sign-client - ssc
"
} # => opt_abbreviations ()
# Option config
opt_config () {
print "
Easy-TLS configurable options (Abbreviation|full option):
cg|custom.group NAME
Save the Custom Group NAME - NAME must be a single contiguous word.
This group can be changed.
Using easytls-cryptv2-verify.sh in your openvpn server, you can
configure multiple group names to match. eg. 'Home Office Remote'
td|tmp-dir
Set server scripts temporary directory
ac|auto.check on|off
Always run auto-check
Toggle auto.check on|off.
co|custom.openvpn '/full/path/to/openvpn(.exe)'
Save your custom openvpn binary location.
EG: /usr/local/bin/openvpn
Quotes are not required.
EG: 'C:/Program Files/OpenVPN/mybin/openvpn.exe'
Quotes are required for spaces.
Back-slash is not support, use Forward-slash '/' ONLY.
im|inline.metadata on|off
Add metadata to inline file
Toggle inline-file metadata on|off.
ih|inline.hardware on|off
Include metadata hardware-addresses in metadata for inline file
Toggle inline-file hardware-address metadata on|off.
addition (No short form)
Add arbitrary item to config
This only adds the <label = > item to the config.
The item must then be configured.
This allows for future additions to config without the need to hack.
deletion (No short form)
delete an item from config
Should the need arise, items can now be deleted also.
"
} # => opt_config ()
############################################################################
#
# EASYTLS TO EASYRSA3 COMPATIBILITY Section
#
# Wrapper around 'printf' - clobber 'print' since it's not POSIX anyway
print () {
[ -z "${EASYTLS_SILENT}" ] || return 0
"${EASYTLS_PRINTF}" "%s\n" "${*}"
} # => print ()
# Exit fatally with a message to stderr
# present even with EASYTLS_BATCH as these are fatal problems
die () {
unset -v EASYTLS_SILENT
print
error_msg
print "Error: ${1}" 1>&2
print
[ -n "${help_note}" ] && print "Note: ${help_note}" && print
easytls_version
exit "${2:-1}"
} # => die ()
# Specific error messages from sub-functions which do not use die()
error_msg () {
if [ -n "${1}" ]; then
error_log="${error_log:-ERROR:}
${1}"
else
print "Error log: ${error_log}"
print
fi
} # => error_msg ()
# Missing files
missing_file () {
die "Missing file: ${1}"
} # => missing_file ()
# Fatal errors prior to deps
fatal_opt () {
if [ -z "${1}" ]; then
# If fatal_msg is not set then ok
[ -n "${fatal_msg}" ] || return 0
else
# Add the message to fatal_msg and ok
fatal_msg="${fatal_msg}
${1}"
return 0
fi
# fatal_msg is set
die "${fatal_msg}"
} # => fatal_opt ()
# remove temp files and do terminal cleanups
cleanup () {
"${EASYTLS_RM}" -f "${EASYTLS_SSL_CONF}" \
"${EASYTLS_TEMP_LIST}" "${EASYTLS_TEMP_RECORD}"
if [ -d "${EASYTLS_TEMP_LOCK}" ]; then
"${EASYTLS_RM}" -r "${EASYTLS_TEMP_LOCK}"
easytls_verbose "Lock released"
fi
if [ -n "${EASYTLS_FOR_WINDOWS}" ]; then
# shellcheck disable=SC3040
set -o echo
else
[ -t 1 ] && stty echo
fi
[ -n "${EASYTLS_SILENT}" ] || echo "" # just to get a clean line
} # => cleanup ()
# non-fatal warning output
warn () {
[ -z "${EASYTLS_SILENT}" ] || return 0
print "
WARNING:
${1}
" 1>&2
} # => warn ()
# informational notices to stdout
notice () {
[ -z "${EASYTLS_QUIET}" ] || return 0
[ -z "${EASYTLS_SILENT}" ] || return 0
print "
${1}"
} # => notice ()
# intent confirmation helper func
# returns without prompting in EASYTLS_BATCH
confirm () {
[ -z "${require_batch}" ] || return 0
[ -z "${EASYTLS_BATCH}" ] || return 0
prompt="${1}"
value="${2}"
msg="${3}"
input=""
print "
${msg}
Type the word '${value}' to continue, or any other input to abort."
"${EASYTLS_PRINTF}" '\n%s' " ${prompt}"
read -r input
if [ "${input}" = "${value}" ]; then
"${EASYTLS_PRINTF}" "\n"
return 0
fi
notice "Aborting without confirmation."
exit 9
} # => confirm ()
# Check for defined EASYRSA_PKI
vars_source_check () {
[ -n "${EASYRSA_PKI}" ] || die "EASYRSA_PKI env-var undefined"
} # => vars_source_check ()
# Basic sanity-check of PKI init and complain if missing
verify_pki_init () {
# check that the pki dir exists
vars_source_check
[ -d "${EASYRSA_PKI}" ] || {
error_msg "Easy-RSA has not been initialised."
error_msg "Easy-TLS requires an Easy-RSA CA"
error_msg "Otherwise, use Easy-TLS in No-CA mode"
error_msg "$(cmd_help init-tls||:)"
return 1
# die "verify_pki_init - vars_source_check"
}
# verify expected dirs present:
for i in private reqs; do
[ -d "${EASYRSA_PKI}/${i}" ] || {
error_msg "Easy-RSA has not been initialised."
error_msg "Easy-TLS requires an Easy-RSA CA"
error_msg "Otherwise, use Easy-TLS in No-CA mode"
error_msg "$(cmd_help init-tls||:)"
return 1
# die "verify_pki_init - private reqs"
}
done
} # => verify_pki_init ()
# Verify core CA files present
verify_ca_init () {
help_note="Run without commands for usage and command help."
# First check the PKI has been initialized
verify_pki_init
# Verify expected files are present. Allow files to be regular files
# (or symlinks), but also pipes, for flexibility with ca.key
for i in serial index.txt index.txt.attr ca.crt private/ca.key; do
if [ ! -f "${EASYRSA_PKI}/${i}" ] && [ ! -p "${EASYRSA_PKI}/${i}" ]; then
#[ "$1" = "test" ] && return 1
die "
Easy-TLS requires that you have built your EASY-RSA CA.
Easy-RSA error:
Missing expected CA file: ${i} (perhaps you need to run build-ca?)
${help_note}"
fi
done
# When operating in 'test' mode, return success.
# test callers don't care about CA-specific dir structure
#[ "$1" = "test" ] && return 0
# verify expected CA-specific dirs:
for i in issued certs_by_serial
do
[ -d "${EASYRSA_PKI}/${i}" ] || die "
Easy-TLS requires that you have built your EASY-RSA CA.
Easy-RSA error:
Missing expected CA dir: ${i} (perhaps you need to run build-ca?)
${help_note}"
done
unset -v help_note
} # => verify_ca_init ()
############################################################################
#
# EASYTLS MANAGEMENT Section
#
# Verbose messages
easytls_verbose () {
[ -n "${EASYTLS_VERBOSE}" ] || return 0
[ -z "${EASYTLS_SILENT}" ] || return 0
[ -z "${flash_config}" ] || return 0
[ -z "${EASYTLS_verboff}" ] || return 0
verbose_message="${*}"
[ -n "${verbose_message}" ] || { print ""; return 0; }
"${EASYTLS_PRINTF}" '%s\n' "* ${verbose_message}"
} # => easytls_verbose ()
# Configurable options
easytls_config () {
# Verify config-file and hash has already been done by config_use()
case "${1}" in
addition)
cfg_opt="${2}"
[ -n "${cfg_opt}" ] || { error_msg "Required: option"; return 1; }
config_addition && return 0
error_msg "Failed to add: ${cfg_opt}"
return 1
;;
deletion)
cfg_opt="${2}"
[ -n "${cfg_opt}" ] || { error_msg "Required: option"; return 1; }
config_deletion && return 0
error_msg "Failed to delete: ${cfg_opt}"
return 1
;;
nc|no.ca) cfg_opt="no.ca"; cfg_val="${2}" ;;
ha|hash.algorithm) cfg_opt="hash.algorithm"; cfg_val="${2}" ;;
td|tmp.dir) cfg_opt="tmp.dir"; cfg_val="${2}" ;;
ac|auto.check) cfg_opt="auto.check"; cfg_val="${2}" ;;
cg|custom.group) cfg_opt="custom.group"; cfg_val="${2}" ;;
id|ca.id) cfg_opt="ca.id"; cfg_val="${2}" ;;
co|custom.openvpn) cfg_opt="custom.openvpn"; cfg_val="${2}" ;;
im|inline.metadata) cfg_opt="inline.metadata"; cfg_val="${2}" ;;
ih|inline.hardware) cfg_opt="inline.hardware"; cfg_val="${2}" ;;
status) cfg_opt="status"; cfg_val="${2}" ;;
test.bool) cfg_opt="test.bool"; cfg_val="${2}" ;;
'')
easytls_verbose
"${EASYTLS_PRINTF}" "%s\n" "easytls = ${EASYTLS_VERSION}"
"${EASYTLS_GREP}" -v 'status' "${EASYTLS_CONFIG_FILE}"
easytls_verbose
skip_master_hash=1
return 0
;;
*)
error_msg "Unknown option: ${1}"
return 1
esac
case "${cfg_opt}" in
test.bool)
case "${cfg_val}" in
0|1) : ;; # ok
*)
help_note="Supported options: 0 | 1"
die "Unsupported value for ${cfg_opt}: ${cfg_val}"
esac
;;
no.ca)
help_note="See help for init-tls"
die "To change No-CA mode you must create a new Easy-TLS PKI"
;;
tmp.dir)
# Test for dir
[ -d "${cfg_val}" ] || missing_file "${cfg_val}"
;;
auto.check|inline.metadata|inline.hardware)
case "${cfg_val}" in
on|off) ;; # ok
*)
help_note="Supported options: on | off"
die "Unsupported value for ${cfg_opt}: ${cfg_val}"
esac
;;
custom.group)
# Cannot be empty
[ -n "${cfg_val}" ] || die "custom.group cannot be empty"
# spaces ?
test_val="${cfg_val%% *}"
[ "${cfg_val}" = "${test_val}" ] || {
help_note="custom.group does not support spaces."
die "Unsupported value for ${cfg_opt}: ${cfg_val}"
}
confirm "Change your Custom-Group: " "yes" \
"NOTICE:
* If you change your custom group here then you will need to use
ENABLE_MULTI_CUSTOM_G=1 in your easytls-cryptv2-verify.vars file.
And also insert all the custom groups into LOCAL_CUSTOM_G variable."
;;
custom.openvpn)
if [ -n "${cfg_val}" ]; then
# Test for file
[ -f "${cfg_val}" ] || missing_file "${cfg_val}"
fi
;;
ca.id)
if [ -n "${EASYTLS_MASTER_ID}" ]; then
help_note="To change your CA-ID you must create a new Easy-RSA CA"
die "The CA-ID cannot be changed"
fi
if [ -z "${save_id_authorized}" ]; then
die "Please use 'easytls save-id' to configure your CA-ID"
fi
;;
hash.algorithm)
help_note="See help for init-tls"
die "To change your HASH you must create a new Easy-TLS PKI"
;;
status) [ -n "${flash_config}" ] || return 0 ;;
*) die "Unknown option: ${cfg_opt}"
esac
# Write config
config_update || die "Error updating config."
#config_save_hash || die "Error hashing config."
config_use || die "config_use (updated) - Error: ${?}"
} # => easytls_config ()
# Update config
config_update () {
# remove old_record
old_record="^${cfg_opt} = .*\$"
if universal_update del "${EASYTLS_CONFIG_FILE}" "${old_record}"; then
: # ok
else
return 1
fi
# add new_record
new_record="${cfg_opt} = ${cfg_val}"
if universal_update add "${EASYTLS_CONFIG_FILE}" "${new_record}"; then
: # ok
else
return 1
fi
easytls_verbose
easytls_verbose "config-file updated: ${cfg_opt} = ${cfg_val}"
easytls_verbose
update_master_hash=1
} # => config_update ()
# Use config
config_use () {
# Verify once for config and then again later for other commands
# Don't load config if it does not exist
[ -f "${EASYTLS_CONFIG_FILE}" ] || return 0
# Cannot use IFS because Windows/sh/read needs to recognise CRLF as well
# It is simplest to rely on Windows/sh/read default which does CRLF or NL
# Any writes to config and Windows/sed converts all CRLF to NL anyway
unset -v config_error
while read -r cfg_opt cfg_equ cfg_val; do
# May as well check it for shellcheck
if [ "${cfg_equ}" != "=" ]; then
error_msg "Config error: Require '='"
config_error=2
fi
# These settings do not change command line
case "${cfg_opt}" in
test.bool) : ;;
auto.check)
case "${cfg_val}" in
off) set_var AUTO_CHECK_DISABLED 1 ;;
on) : ;;
*)
error_msg "Config error: Invalid value: ${cfg_val}"
config_error=3
esac
;;
inline.metadata)
case "${cfg_val}" in
off) set_var no_metadata 1 ;;
on) : ;;
*)
error_msg "Config error: Invalid value: ${cfg_val}"
config_error=4
esac
;;
inline.hardware)
case "${cfg_val}" in
off) : ;;
on) set_var add_hardware 1 ;;
*)
error_msg "Config error: Invalid value: ${cfg_val}"
config_error=5
esac
;;
custom.group)
[ -z "${cfg_val}" ] || set_var TLSKEY_CUSTOM_GRP "${cfg_val}"
set_var TLSKEY_CUSTOM_GRP "EASYTLS"
;;
custom.openvpn)
[ -z "${cfg_val}" ] || set_var EASYTLS_OPENVPN "${cfg_val}"
set_var EASYTLS_OPENVPN "openvpn"
;;
tmp.dir)
[ -z "${cfg_val}" ] || set_var EASYTLS_tmp_dir "${cfg_val}"
;;
no.ca)
# This is set explicitly here to protect config
[ -z "${cfg_val}" ] || export EASYTLS_NO_CA="${cfg_val}"
;;
hash.algorithm)
# This is set explicitly here to protect config
[ -z "${cfg_val}" ] || export EASYTLS_HASH_ALGO="${cfg_val}"
;;
ca.id)
# This is set explicitly here to protect config
export EASYTLS_MASTER_ID="${cfg_val}"
;;
status)
EASYTLS_STATUS="${cfg_val}"
unset -v flash_config
;;
*) error_msg "Config error: Ignored option: ${cfg_opt}"
esac
done < "${EASYTLS_CONFIG_FILE}"
[ -z "${config_error}" ] || return "${config_error}"
# Set default hash.algorithm
EASYTLS_HASH_ALGO="${EASYTLS_HASH_ALGO:-SHA256}"
# Set fixed hash
Zero_x8=00000000
Zero_x16="${Zero_x8}${Zero_x8}"
case "${EASYTLS_HASH_ALGO}" in
SHA1)
fixed_hash=1111111111111111111111111111111111111111
fixed_length=40
;;
SHA256)
fixed_hash=2222222222222222222222222222222222222222222222222222222222222222
fixed_length=64
;;
*)
error_msg "config_use - Unknown algorithm: ${EASYTLS_HASH_ALGO}"
return 1
esac
# Group mode is not tied to a CA or Certificates
# Group server TLS-CV2 Key is free to roam anywhere
# Group client TLS-CV2 Key must follow the the server key which built it
group_mode_fixed_ca_id="${Zero_x16}${Zero_x16}${Zero_x16}${Zero_x16}"
# generate forbidden_hash (empty input)
if easytls_ssl_generate_empty_hash; then
forbidden_hash="${empty_hash}"
unset -v empty_hash
else
error_msg "config_use - easytls_ssl_generate_empty_hash"
return 1
fi
# Fixed TLS key serial
fixed_tls_auth_serial=7A01
fixed_tls_cryptv1_serial=7C01
# maintenance
config_version || { error_msg "config_use - config_version"; return 1; }
easytls_verbose "config_use OK"
} # => config_use ()
# verify config file hash
config_verify_hash () {
# DISABLED_DELETE
die "DISABLE: config_verify_hash"
[ -z "${config_verify_hash_block}" ] || \
die "config verify hash must only run once"
request_fixed_hash=1
generate_and_match_valid_hash \
"${EASYTLS_CONFIG_FILE}" "${EASYTLS_CONFIG_HASH}" || {
error_msg "config_verify_hash - generate_and_match_valid_hash"
return 1
}
unset -v request_fixed_hash
easytls_verbose "config_verify_hash OK"
config_verify_hash_block=1
} # => config_save_hash ()
# Hash config-file
config_save_hash () {
# DISABLED_DELETE
die "DISABLE: config_save_hash"
[ -z "${config_save_hash_block}" ] || \
die "config save hash must only run once"
request_fixed_hash=1
generate_and_save_file_hash \
"${EASYTLS_CONFIG_FILE}" "${EASYTLS_CONFIG_HASH}" || {
error_msg "config_save_hash - generate_and_save_file_hash"
return 1
}
unset -v request_fixed_hash
easytls_verbose "config-file hash save OK"
update_master_hash=1
config_save_hash_block=1
} # => config_save_hash ()
# Add a new option to config
config_addition () {
# Only allow alpha caracters and '.'