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#!/usr/bin/env bash
# ---------------------------------------------------------------------------
# getssl - Obtain SSL certificates from the letsencrypt.org ACME server
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License at <http://www.gnu.org/licenses/> for
# more details.
# For usage, run "getssl -h" or see https://github.com/srvrco/getssl
# Revision history:
# 2016-01-08 Created (v0.1)
# 2016-01-11 type correction and upload to github (v0.2)
# 2016-01-11 added import of any existing cert on -c option (v0.3)
# 2016-01-12 corrected formatting of imported certificate (v0.4)
# 2016-01-12 corrected error on removal of token in some instances (v0.5)
# 2016-01-18 corrected issue with removing tmp if run as root with the -c option (v0.6)
# 2016-01-18 added option to upload a single PEN file ( used by cpanel) (v0.7)
# 2016-01-23 added dns challenge option (v0.8)
# 2016-01-24 create the ACL directory if it does not exist. (v0.9) - dstosberg
# 2016-01-26 correcting a couple of small bugs and allow curl to follow redirects (v0.10)
# 2016-01-27 add a very basic openssl.cnf file if it doesn't exist and tidy code slightly (v0.11)
# 2016-01-28 Typo corrections, quoted file variables and fix bug on DNS_DEL_COMMAND (v0.12)
# 2016-01-28 changed DNS checks to use nslookup and allow hyphen in domain names (v0.13)
# 2016-01-29 Fix ssh-reload-command, extra waiting for DNS-challenge,
# 2016-01-29 add error_exit and cleanup help message (v0.14)
# 2016-01-29 added -a|--all option to renew all configured certificates (v0.15)
# 2016-01-29 added option for elliptic curve keys (v0.16)
# 2016-01-29 added server-type option to use and check cert validity from website (v0.17)
# 2016-01-30 added --quiet option for running in cron (v0.18)
# 2016-01-31 removed usage of xxd to make script more compatible across versions (v0.19)
# 2016-01-31 removed usage of base64 to make script more compatible across platforms (v0.20)
# 2016-01-31 added option to safe a full chain certificate (v0.21)
# 2016-02-01 commented code and added option for copying concatenated certs to file (v0.22)
# 2016-02-01 re-arrange flow for DNS-challenge, to reduce time taken (v0.23)
# 2016-02-04 added options for other server types (ldaps, or any port) and check_remote (v0.24)
# 2016-02-04 added short sleep following service restart before checking certs (v0.25)
# 2016-02-12 fix challenge token location when directory doesn't exist (v0.26)
# 2016-02-17 fix sed -E issue, and reduce length of renew check to 365 days for older systems (v0.27)
# 2016-04-05 Ensure DNS cleanup on error exit. (0.28) - pecigonzalo
# 2016-04-15 Remove NS Lookup of A record when using dns validation (0.29) - pecigonzalo
# 2016-04-17 Improving the wording in a couple of comments and info statements. (0.30)
# 2016-05-04 Improve check for if DNS_DEL_COMMAND is blank. (0.31)
# 2016-05-06 Setting umask to 077 for security of private keys etc. (0.32)
# 2016-05-20 update to reflect changes in staging ACME server json (0.33)
# 2016-05-20 tidying up checking of json following ACME changes. (0.34)
# 2016-05-21 added AUTH_DNS_SERVER to getssl.cfg as optional definition of authoritative DNS server (0.35)
# 2016-05-21 added DNS_WAIT to getssl.cfg as (default = 10 seconds as before) (0.36)
# 2016-05-21 added PUBLIC_DNS_SERVER option, for forcing use of an external DNS server (0.37)
# 2016-05-28 added FTP method of uploading tokens to remote server (blocked for certs as not secure) (0.38)
# 2016-05-28 added FTP method into the default config notes. (0.39)
# 2016-05-30 Add sftp with password to copy files (0.40)
# 2016-05-30 Add version check to see if there is a more recent version of getssl (0.41)
# 2016-05-30 Add [-u|--upgrade] option to automatically upgrade getssl (0.42)
# 2016-05-30 Added backup when auto-upgrading (0.43)
# 2016-05-30 Improvements to auto-upgrade (0.44)
# 2016-05-31 Improved comments - no structural changes
# 2016-05-31 After running for nearly 6 months, final testing prior to a 1.00 stable version. (0.90)
# 2016-06-01 Reorder functions alphabetically as part of code tidy. (0.91)
# 2016-06-03 Version 1.0 of code for release (1.00)
# 2016-06-09 bugfix of issue 44, and add success statement (ignoring quiet flag) (1.01)
# 2016-06-13 test return status of DNS_ADD_COMMAND and error_exit if a problem (hadleyrich) (1.02)
# 2016-06-13 bugfix of issue 45, problem with SERVER_TYPE when it's just a port number (1.03)
# 2016-06-13 bugfix issue 47 - DNS_DEL_COMMAND cleanup was run when not required. (1.04)
# 2016-06-15 add error checking on RELOAD_CMD (1.05)
# 2016-06-20 updated sed and date functions to run on MAC OS X (1.06)
# 2016-06-20 added CHALLENGE_CHECK_TYPE variable to allow checks direct on https rather than http (1.07)
# 2016-06-21 updated grep functions to run on MAC OS X (1.08)
# 2016-06-11 updated to enable running on windows with cygwin (1.09)
# 2016-07-02 Corrections to work with older slackware issue #56 (1.10)
# 2016-07-02 Updating help info re ACL in config file (1.11)
# 2016-07-04 adding DOMAIN_STORAGE as a variable to solve for issue #59 (1.12)
# 2016-07-05 updated order to better handle non-standard DOMAIN_STORAGE location (1.13)
# 2016-07-06 added additional comments about SANS in example template (1.14)
# 2016-07-07 check for duplicate domains in domain / SANS (1.15)
# 2016-07-08 modified to be used on older bash for issue #64 (1.16)
# 2016-07-11 added -w to -a option and comments in domain template (1.17)
# 2016-07-18 remove / regenerate csr when generating new private domain key (1.18)
# 2016-07-21 add output of combined private key and domain cert (1.19)
# 2016-07-21 updated typo (1.20)
# 2016-07-22 corrected issue in nslookup debug option - issue #74 (1.21)
# 2016-07-26 add more server-types based on openssl s_client (1.22)
# 2016-08-01 updated agreement for letsencrypt (1.23)
# 2016-08-02 updated agreement for letsencrypt to update automatically (1.24)
# 2016-08-03 improve messages on test of certificate installation (1.25)
# 2016-08-04 remove carriage return from agreement - issue #80 (1.26)
# 2016-08-04 set permissions for token folders - issue #81 (1.27)
# 2016-08-07 allow default chained file creation - issue #85 (1.28)
# 2016-08-07 use copy rather than move when archiving certs - issue #86 (1.29)
# 2016-08-07 enable use of a single ACL for all checks (if USE_SINGLE_ACL="true" (1.30)
# 2016-08-23 check for already validated domains (issue #93) - (1.31)
# 2016-08-23 updated already validated domains (1.32)
# 2016-08-23 included better force_renew and template for USE_SINGLE_ACL (1.33)
# 2016-08-23 enable insecure certificate on https token check #94 (1.34)
# 2016-08-23 export OPENSSL_CONF so it's used by all openssl commands (1.35)
# 2016-08-25 updated defaults for ACME agreement (1.36)
# 2016-09-04 correct issue #101 when some domains already validated (1.37)
# 2016-09-12 Checks if which is installed (1.38)
# 2016-09-13 Don't check for updates, if -U parameter has been given (1.39)
# 2016-09-17 Improved error messages from invalid certs (1.40)
# 2016-09-19 remove update check on recursive calls when using -a (1.41)
# 2016-09-21 changed shebang for portability (1.42)
# 2016-09-21 Included option to Deactivate an Authorization (1.43)
# 2016-09-22 retry on 500 error from ACME server (1.44)
# 2016-09-22 added additional checks and retry on 500 error from ACME server (1.45)
# 2016-09-24 merged in IPv6 support (1.46)
# 2016-09-27 added additional debug info issue #119 (1.47)
# 2016-09-27 removed IPv6 switch in favour of checking both IPv4 and IPv6 (1.48)
# 2016-09-28 Add -Q, or --mute, switch to mute notifications about successfully upgrading getssl (1.49)
# 2016-09-30 improved portability to work natively on FreeBSD, Slackware and Mac OS X (1.50)
# 2016-09-30 comment out PRIVATE_KEY_ALG from the domain template Issue #125 (1.51)
# 2016-10-03 check remote certificate for right domain before saving to local (1.52)
# 2016-10-04 allow existing CSR with domain name in subject (1.53)
# 2016-10-05 improved the check for CSR with domain in subject (1.54)
# 2016-10-06 prints update info on what was included in latest updates (1.55)
# 2016-10-06 when using -a flag, ignore folders in working directory which aren't domains (1.56)
# 2016-10-12 allow multiple tokens in DNS challenge (1.57)
# 2016-10-14 added CHECK_ALL_AUTH_DNS option to check all DNS servers, not just one primary server (1.58)
# 2016-10-14 added archive of chain and private key for each cert, and purge old archives (1.59)
# 2016-10-17 updated info comment on failed cert due to rate limits. (1.60)
# 2016-10-17 fix error messages when using 1.0.1e-fips (1.61)
# 2016-10-20 set secure permissions when generating account key (1.62)
# 2016-10-20 set permissions to 700 for getssl script during upgrade (1.63)
# 2016-10-20 add option to revoke a certificate (1.64)
# 2016-10-21 set revocation server default to acme-v01.api.letsencrypt.org (1.65)
# 2016-10-21 bug fix for revocation on different servers. (1.66)
# 2016-10-22 Tidy up archive code for certificates and reduce permissions for security
# 2016-10-22 Add EC signing for secp384r1 and secp521r1 (the latter not yet supported by Let's Encrypt
# 2016-10-22 Add option to create a new private key for every cert (REUSE_PRIVATE_KEY="true" by default)
# 2016-10-22 Combine EC signing, Private key reuse and archive permissions (1.67)
# 2016-10-25 added CHECK_REMOTE_WAIT option ( to pause before final remote check)
# 2016-10-25 Added EC account key support ( prime256v1, secp384r1 ) (1.68)
# 2016-10-25 Ignore DNS_EXTRA_WAIT if all domains already validated (issue #146) (1.69)
# 2016-10-25 Add option for dual ESA / EDSA certs (1.70)
# 2016-10-25 bug fix Issue #141 challenge error 400 (1.71)
# 2016-10-26 check content of key files, not just recreate if missing.
# 2016-10-26 Improvements on portability (1.72)
# 2016-10-26 Date formatting for busybox (1.73)
# 2016-10-27 bug fix - issue #157 not recognising EC keys on some versions of openssl (1.74)
# 2016-10-31 generate EC account keys and tidy code.
# 2016-10-31 fix warning message if cert doesn't exist (1.75)
# 2016-10-31 remove only specified DNS token #161 (1.76)
# 2016-11-03 Reduce long lines, and remove echo from update (1.77)
# 2016-11-05 added TOKEN_USER_ID (to set ownership of token files )
# 2016-11-05 updated style to work with latest shellcheck (1.78)
# 2016-11-07 style updates
# 2016-11-07 bug fix DOMAIN_PEM_LOCATION starting with ./ #167
# 2016-11-08 Fix for openssl 1.1.0 #166 (1.79)
# 2016-11-08 Add and comment optional sshuserid for ssh ACL (1.80)
# 2016-11-09 Add SKIP_HTTP_TOKEN_CHECK option (Issue #170) (1.81)
# 2016-11-13 bug fix DOMAIN_KEY_CERT generation (1.82)
# 2016-11-17 add PREVENT_NON_INTERACTIVE_RENEWAL option (1.83)
# 2016-12-03 add HTTP_TOKEN_CHECK_WAIT option (1.84)
# 2016-12-03 bugfix CSR renewal when no SANS and when using MINGW (1.85)
# 2016-12-16 create CSR_SUBJECT variable - Issue #193
# 2016-12-16 added fullchain to archive (1.86)
# 2016-12-16 updated DOMAIN_PEM_LOCATION when using DUAL_RSA_ECDSA (1.87)
# 2016-12-19 allow user to ignore permission preservation with nfsv3 shares (1.88)
# 2016-12-19 bug fix for CA (1.89)
# 2016-12-19 included IGNORE_DIRECTORY_DOMAIN option (1.90)
# 2016-12-22 allow copying files to multiple locations (1.91)
# 2016-12-22 bug fix for copying tokens to multiple locations (1.92)
# 2016-12-23 tidy code - place default variables in alphabetical order.
# 2016-12-27 update checks to work with openssl in FIPS mode (1.93)
# 2016-12-28 fix leftover tmpfiles in upgrade routine (1.94)
# 2016-12-28 tidied up upgrade tmpfile handling (1.95)
# 2017-01-01 update comments
# 2017-01-01 create stable release 2.0 (2.00)
# 2017-01-02 Added option to limit number of old versions to keep (2.01)
# 2017-01-03 Created check_config function to list all obvious config issues (2.02)
# 2017-01-10 force renew if FORCE_RENEWAL file exists (2.03)
# 2017-01-12 added drill, dig or host as alternatives to nslookup (2.04)
# 2017-01-18 bugfix issue #227 - error deleting csr if doesn't exist
# 2017-01-18 issue #228 check private key and account key are different (2.05)
# 2017-01-21 issue #231 mingw bugfix and typos in debug messages (2.06)
# 2017-01-29 issue #232 use neutral locale for date formatting (2.07)
# 2017-01-30 issue #243 compatibility with bash 3.0 (2.08)
# 2017-01-30 issue #243 additional compatibility with bash 3.0 (2.09)
# 2017-02-18 add OCSP Must-Staple to the domain csr generation (2.10)
# 2018-01-04 updating to use the updated letsencrypt APIv2
# 2019-09-30 issue #423 Use HTTP 1.1 as workaround atm (2.11)
# 2019-10-02 issue #425 Case insensitive processing of agreement url because of HTTP/2 (2.12)
# 2019-10-07 update DNS checks to allow use of CNAMEs (2.13)
# 2019-11-18 Rebased master onto APIv2 and added Content-Type: application/jose+json (2.14)
# 2019-11-20 #453 and #454 Add User-Agent to all curl requests
# 2019-11-22 #456 Fix shellcheck issues
# 2019-11-23 #459 Fix missing chain.crt
# 2019-12-18 #462 Use POST-as-GET for ACMEv2 endpoints
# 2020-01-07 #464 and #486 "json was blank" (change all curl request to use POST-as-GET)
# 2020-01-08 Error and exit if rate limited, exit if curl returns nothing
# 2020-01-10 Change domain and getssl templates to v2 (2.15)
# 2020-01-17 #473 and #477 Don't use POST-as-GET when sending ready for challenge for ACMEv1 (2.16)
# ----------------------------------------------------------------------------------------
PROGNAME=${0##*/}
VERSION="2.16"
# defaults
ACCOUNT_KEY_LENGTH=4096
ACCOUNT_KEY_TYPE="rsa"
CA="https://acme-staging-v02.api.letsencrypt.org/directory"
CA_CERT_LOCATION=""
CHALLENGE_CHECK_TYPE="http"
CHECK_ALL_AUTH_DNS="false"
CHECK_REMOTE="true"
CHECK_REMOTE_WAIT=0
CODE_LOCATION="https://raw.githubusercontent.com/srvrco/getssl/master/getssl"
CSR_SUBJECT="/"
CURL_USERAGENT="${PROGNAME}/${VERSION}"
DEACTIVATE_AUTH="false"
DEFAULT_REVOKE_CA="https://acme-v02.api.letsencrypt.org"
DNS_EXTRA_WAIT=""
DNS_WAIT=10
DOMAIN_KEY_LENGTH=4096
DUAL_RSA_ECDSA="false"
GETSSL_IGNORE_CP_PRESERVE="false"
HTTP_TOKEN_CHECK_WAIT=0
IGNORE_DIRECTORY_DOMAIN="false"
ORIG_UMASK=$(umask)
PREVIOUSLY_VALIDATED="true"
PRIVATE_KEY_ALG="rsa"
PUBLIC_DNS_SERVER=""
RELOAD_CMD=""
RENEW_ALLOW="30"
REUSE_PRIVATE_KEY="true"
SERVER_TYPE="https"
SKIP_HTTP_TOKEN_CHECK="false"
SSLCONF="$(openssl version -d 2>/dev/null| cut -d\" -f2)/openssl.cnf"
OCSP_MUST_STAPLE="false"
TEMP_UPGRADE_FILE=""
TOKEN_USER_ID=""
USE_SINGLE_ACL="false"
VALIDATE_VIA_DNS=""
WORKING_DIR=~/.getssl
_CHECK_ALL=0
_CREATE_CONFIG=0
_FORCE_RENEW=0
_KEEP_VERSIONS=""
_MUTE=0
_QUIET=0
_RECREATE_CSR=0
_REVOKE=0
_UPGRADE=0
_UPGRADE_CHECK=1
_USE_DEBUG=0
_INFO_COLOR=""
_RESET=$(tput sgr0)
config_errors="false"
LANG=C
API=1
# store copy of original command in case of upgrading script and re-running
ORIGCMD="$0 $*"
# Define all functions (in alphabetical order)
cert_archive() { # Archive certificate file by copying files to dated archive dir.
debug "creating an archive copy of current new certs"
date_time=$(date +%Y_%m_%d_%H_%M)
mkdir -p "${DOMAIN_DIR}/archive/${date_time}"
umask 077
cp "$CERT_FILE" "${DOMAIN_DIR}/archive/${date_time}/${DOMAIN}.crt"
cp "$DOMAIN_DIR/${DOMAIN}.csr" "${DOMAIN_DIR}/archive/${date_time}/${DOMAIN}.csr"
cp "$DOMAIN_DIR/${DOMAIN}.key" "${DOMAIN_DIR}/archive/${date_time}/${DOMAIN}.key"
cp "$CA_CERT" "${DOMAIN_DIR}/archive/${date_time}/chain.crt"
cat "$CERT_FILE" "$CA_CERT" > "${DOMAIN_DIR}/archive/${date_time}/fullchain.crt"
if [[ "$DUAL_RSA_ECDSA" == "true" ]]; then
cp "${CERT_FILE%.*}.ec.crt" "${DOMAIN_DIR}/archive/${date_time}/${DOMAIN}.ec.crt"
cp "$DOMAIN_DIR/${DOMAIN}.ec.csr" "${DOMAIN_DIR}/archive/${date_time}/${DOMAIN}.ec.csr"
cp "$DOMAIN_DIR/${DOMAIN}.ec.key" "${DOMAIN_DIR}/archive/${date_time}/${DOMAIN}.ec.key"
cp "${CA_CERT%.*}.ec.crt" "${DOMAIN_DIR}/archive/${date_time}/chain.ec.crt"
cat "${CERT_FILE%.*}.ec.crt" "${CA_CERT%.*}.ec.crt" > "${DOMAIN_DIR}/archive/${date_time}/fullchain.ec.crt"
fi
umask "$ORIG_UMASK"
debug "purging old GetSSL archives"
purge_archive "$DOMAIN_DIR"
}
check_challenge_completion() { # checks with the ACME server if our challenge is OK
uri=$1
domain=$2
keyauthorization=$3
debug "sending request to ACME server saying we're ready for challenge"
# check response from our request to perform challenge
if [[ $API -eq 1 ]]; then
send_signed_request "$uri" "{\"resource\": \"challenge\", \"keyAuthorization\": \"$keyauthorization\"}"
if [[ -n "$code" ]] && [[ ! "$code" == '202' ]] ; then
error_exit "$domain:Challenge error: $code"
fi
else # APIv2
send_signed_request "$uri" "{}"
if [[ -n "$code" ]] && [[ ! "$code" == '200' ]] ; then
detail=$(echo "$response" | grep "detail" | awk -F\" '{print $4}')
error_exit "$domain:Challenge error: $code:Detail: $detail"
fi
fi
# loop "forever" to keep checking for a response from the ACME server.
while true ; do
debug "checking if challenge is complete"
if [[ $API -eq 1 ]]; then
if ! get_cr "$uri" ; then
error_exit "$domain:Verify error:$code"
fi
else # APIv2
send_signed_request "$uri" ""
fi
status=$(json_get "$response" status)
# If ACME response is valid, then break out of loop
if [[ "$status" == "valid" ]] ; then
info "Verified $domain"
break;
fi
# if ACME response is that their check gave an invalid response, error exit
if [[ "$status" == "invalid" ]] ; then
error_exit "$domain:Verify error:$(echo "$response" | grep "detail" | awk -F' "' '{print $3}')"
fi
# if ACME response is pending ( they haven't completed checks yet) then wait and try again.
if [[ "$status" == "pending" ]] ; then
info "Pending"
else
error_exit "$domain:Verify error:$(echo "$response" | grep "detail")"
fi
debug "sleep 5 secs before testing verify again"
sleep 5
done
if [[ "$DEACTIVATE_AUTH" == "true" ]]; then
deactivate_url=$(echo "$responseHeaders" | grep "^Link" | awk -F"[<>]" '{print $2}')
deactivate_url_list="$deactivate_url_list $deactivate_url"
debug "adding url to deactivate list - $deactivate_url"
fi
}
check_config() { # check the config files for all obvious errors
debug "checking config"
# check keys
case "$ACCOUNT_KEY_TYPE" in
rsa|prime256v1|secp384r1|secp521r1)
debug "checked ACCOUNT_KEY_TYPE " ;;
*)
info "${DOMAIN}: invalid ACCOUNT_KEY_TYPE - $ACCOUNT_KEY_TYPE"
config_errors=true ;;
esac
if [[ "$ACCOUNT_KEY" == "$DOMAIN_DIR/${DOMAIN}.key" ]]; then
info "${DOMAIN}: ACCOUNT_KEY and domain key ( $DOMAIN_DIR/${DOMAIN}.key ) must be different"
config_errors=true
fi
case "$PRIVATE_KEY_ALG" in
rsa|prime256v1|secp384r1|secp521r1)
debug "checked PRIVATE_KEY_ALG " ;;
*)
info "${DOMAIN}: invalid PRIVATE_KEY_ALG - $PRIVATE_KEY_ALG"
config_errors=true ;;
esac
if [[ "$DUAL_RSA_ECDSA" == "true" ]] && [[ "$PRIVATE_KEY_ALG" == "rsa" ]]; then
info "${DOMAIN}: PRIVATE_KEY_ALG not set to an EC type and DUAL_RSA_ECDSA=\"true\""
config_errors=true
fi
# get all domains
if [[ "$IGNORE_DIRECTORY_DOMAIN" == "true" ]]; then
alldomains=${SANS//,/ }
else
alldomains=$(echo "$DOMAIN,$SANS" | sed "s/,/ /g")
fi
if [[ -z "$alldomains" ]]; then
info "${DOMAIN}: no domains specified"
config_errors=true
fi
if [[ $VALIDATE_VIA_DNS == "true" ]]; then # using dns-01 challenge
if [[ -z "$DNS_ADD_COMMAND" ]]; then
info "${DOMAIN}: DNS_ADD_COMMAND not defined (whilst VALIDATE_VIA_DNS=\"true\")"
config_errors=true
fi
if [[ -z "$DNS_DEL_COMMAND" ]]; then
info "${DOMAIN}: DNS_DEL_COMMAND not defined (whilst VALIDATE_VIA_DNS=\"true\")"
config_errors=true
fi
fi
dn=0
tmplist=$(mktemp 2>/dev/null || mktemp -t getssl)
for d in $alldomains; do # loop over domains (dn is domain number)
debug "checking domain $d"
if [[ "$(grep "^${d}$" "$tmplist")" = "$d" ]]; then
info "${DOMAIN}: $d appears to be duplicated in domain, SAN list"
config_errors=true
else
echo "$d" >> "$tmplist"
fi
if [[ "$USE_SINGLE_ACL" == "true" ]]; then
DOMAIN_ACL="${ACL[0]}"
else
DOMAIN_ACL="${ACL[$dn]}"
fi
if [[ $VALIDATE_VIA_DNS != "true" ]]; then # using http-01 challenge
if [[ -z "${DOMAIN_ACL}" ]]; then
info "${DOMAIN}: ACL location not specified for domain $d in $DOMAIN_DIR/getssl.cfg"
config_errors=true
fi
# check domain exist
if [[ "$DNS_CHECK_FUNC" == "drill" ]] || [[ "$DNS_CHECK_FUNC" == "dig" ]]; then
if [[ "$($DNS_CHECK_FUNC "${d}" |grep -c "${d}")" -ge 1 ]]; then
debug "found IP for ${d}"
else
info "${DOMAIN}: DNS lookup failed for ${d}"
config_errors=true
fi
elif [[ "$DNS_CHECK_FUNC" == "host" ]]; then
if [[ "$($DNS_CHECK_FUNC "${d}" |grep -c "^${d}")" -ge 1 ]]; then
debug "found IP for ${d}"
else
info "${DOMAIN}: DNS lookup failed for ${d}"
config_errors=true
fi
elif [[ "$(nslookup -query=AAAA "${d}"|grep -c "^${d}.*has AAAA address")" -ge 1 ]]; then
debug "found IPv6 record for ${d}"
elif [[ "$(nslookup "${d}"| grep -c ^Name)" -ge 1 ]]; then
debug "found IPv4 record for ${d}"
else
info "${DOMAIN}: DNS lookup failed for $d"
config_errors=true
fi
fi # end using http-01 challenge
((dn++))
done
# tidy up
rm -f "$tmplist"
if [[ "$config_errors" == "true" ]]; then
error_exit "${DOMAIN}: exiting due to config errors"
fi
debug "${DOMAIN}: check_config completed - all OK"
}
check_getssl_upgrade() { # check if a more recent version of code is available available
TEMP_UPGRADE_FILE="$(mktemp 2>/dev/null || mktemp -t getssl)"
curl --user-agent "$CURL_USERAGENT" --silent "$CODE_LOCATION" --output "$TEMP_UPGRADE_FILE"
errcode=$?
if [[ $errcode -eq 60 ]]; then
error_exit "curl needs updating, your version does not support SNI (multiple SSL domains on a single IP)"
elif [[ $errcode -gt 0 ]]; then
error_exit "curl error : $errcode"
fi
latestversion=$(awk -F '"' '$1 == "VERSION=" {print $2}' "$TEMP_UPGRADE_FILE")
latestvdec=$(echo "$latestversion"| tr -d '.')
localvdec=$(echo "$VERSION"| tr -d '.' )
debug "current code is version ${VERSION}"
debug "Most recent version is ${latestversion}"
# use a default of 0 for cases where the latest code has not been obtained.
if [[ "${latestvdec:-0}" -gt "$localvdec" ]]; then
if [[ ${_UPGRADE} -eq 1 ]]; then
install "$0" "${0}.v${VERSION}"
install -m 700 "$TEMP_UPGRADE_FILE" "$0"
if [[ ${_MUTE} -eq 0 ]]; then
echo "Updated getssl from v${VERSION} to v${latestversion}"
echo "these update notification can be turned off using the -Q option"
echo ""
echo "Updates are;"
awk "/\(${VERSION}\)$/ {s=1} s; /\(${latestversion}\)$/ {s=0}" "$TEMP_UPGRADE_FILE" | awk '{if(NR>1)print}'
echo ""
fi
if [[ -n "$_KEEP_VERSIONS" ]] && [[ "$_KEEP_VERSIONS" =~ ^[0-9]+$ ]]; then
# Obtain all locally stored old versions in getssl_versions
declare -a getssl_versions
shopt -s nullglob
for getssl_version in "$0".v*; do
getssl_versions[${#getssl_versions[@]}]="$getssl_version"
done
shopt -u nullglob
# Explicitly sort the getssl_versions array to make sure
shopt -s -o noglob
# shellcheck disable=SC2207
IFS=$'\n' getssl_versions=($(sort <<< "${getssl_versions[*]}"))
shopt -u -o noglob
# Remove entries until given number of old versions to keep is reached
while [[ ${#getssl_versions[@]} -gt $_KEEP_VERSIONS ]]; do
debug "removing old version ${getssl_versions[0]}"
rm "${getssl_versions[0]}"
getssl_versions=("${getssl_versions[@]:1}")
done
fi
eval "$ORIGCMD"
graceful_exit
else
info ""
info "A more recent version (v${latestversion}) of getssl is available, please update"
info "the easiest way is to use the -u or --upgrade flag"
info ""
fi
fi
}
clean_up() { # Perform pre-exit housekeeping
umask "$ORIG_UMASK"
if [[ $VALIDATE_VIA_DNS == "true" ]]; then
# Tidy up DNS entries if things failed part way though.
shopt -s nullglob
for dnsfile in "$TEMP_DIR"/dns_verify/*; do
# shellcheck source=/dev/null
. "$dnsfile"
debug "attempting to clean up DNS entry for $d"
eval "$DNS_DEL_COMMAND" "$d" "$auth_key"
done
shopt -u nullglob
fi
if [[ -n "$DOMAIN_DIR" ]]; then
rm -rf "${TEMP_DIR:?}"
fi
if [[ -n "$TEMP_UPGRADE_FILE" ]] && [[ -f "$TEMP_UPGRADE_FILE" ]]; then
rm -f "$TEMP_UPGRADE_FILE"
fi
}
copy_file_to_location() { # copies a file, using scp, sftp or ftp if required.
cert=$1 # descriptive name, just used for display
from=$2 # current file location
to=$3 # location to move file to.
IFS=\; read -r -a copy_locations <<<"$3"
for to in "${copy_locations[@]}"; do
info "copying $cert to $to"
if [[ "${to:0:4}" == "ssh:" ]] ; then
debug "using scp scp -q $from ${to:4}"
if ! scp -q "$from" "${to:4}" >/dev/null 2>&1 ; then
error_exit "problem copying file to the server using scp.
scp $from ${to:4}"
fi
debug "userid $TOKEN_USER_ID"
if [[ "$cert" == "challenge token" ]] && [[ -n "$TOKEN_USER_ID" ]]; then
servername=$(echo "$to" | awk -F":" '{print $2}')
tofile=$(echo "$to" | awk -F":" '{print $3}')
debug "servername $servername"
debug "file $tofile"
# shellcheck disable=SC2029
# shellcheck disable=SC2086
ssh $SSH_OPTS "$servername" "chown $TOKEN_USER_ID $tofile"
fi
elif [[ "${to:0:4}" == "ftp:" ]] ; then
if [[ "$cert" != "challenge token" ]] ; then
error_exit "ftp is not a secure method for copying certificates or keys"
fi
debug "using ftp to copy the file from $from"
ftpuser=$(echo "$to"| awk -F: '{print $2}')
ftppass=$(echo "$to"| awk -F: '{print $3}')
ftphost=$(echo "$to"| awk -F: '{print $4}')
ftplocn=$(echo "$to"| awk -F: '{print $5}')
ftpdirn=$(dirname "$ftplocn")
ftpfile=$(basename "$ftplocn")
fromdir=$(dirname "$from")
fromfile=$(basename "$from")
debug "ftp user=$ftpuser - pass=$ftppass - host=$ftphost dir=$ftpdirn file=$ftpfile"
debug "from dir=$fromdir file=$fromfile"
ftp -n <<- _EOF
open $ftphost
user $ftpuser $ftppass
cd $ftpdirn
lcd $fromdir
put $fromfile
_EOF
elif [[ "${to:0:5}" == "sftp:" ]] ; then
debug "using sftp to copy the file from $from"
ftpuser=$(echo "$to"| awk -F: '{print $2}')
ftppass=$(echo "$to"| awk -F: '{print $3}')
ftphost=$(echo "$to"| awk -F: '{print $4}')
ftplocn=$(echo "$to"| awk -F: '{print $5}')
ftpdirn=$(dirname "$ftplocn")
ftpfile=$(basename "$ftplocn")
fromdir=$(dirname "$from")
fromfile=$(basename "$from")
debug "sftp user=$ftpuser - pass=$ftppass - host=$ftphost dir=$ftpdirn file=$ftpfile"
debug "from dir=$fromdir file=$fromfile"
sshpass -p "$ftppass" sftp "$ftpuser@$ftphost" <<- _EOF
cd $ftpdirn
lcd $fromdir
put $fromfile
_EOF
else
if ! mkdir -p "$(dirname "$to")" ; then
error_exit "cannot create ACL directory $(basename "$to")"
fi
if [[ "$GETSSL_IGNORE_CP_PRESERVE" == "true" ]]; then
if ! cp "$from" "$to" ; then
error_exit "cannot copy $from to $to"
fi
else
if ! cp -p "$from" "$to" ; then
error_exit "cannot copy $from to $to"
fi
fi
if [[ "$cert" == "challenge token" ]] && [[ -n "$TOKEN_USER_ID" ]]; then
chown "$TOKEN_USER_ID" "$to"
fi
fi
debug "copied $from to $to"
done
}
create_csr() { # create a csr using a given key (if it doesn't already exist)
csr_file=$1
csr_key=$2
# check if domain csr exists - if not then create it
if [[ -s "$csr_file" ]]; then
debug "domain csr exists at - $csr_file"
# check all domains in config are in csr
if [[ "$IGNORE_DIRECTORY_DOMAIN" == "true" ]]; then
alldomains=$(echo "$SANS" | sed -e 's/ //g; s/,$//; y/,/\n/' | sort -u)
else
alldomains=$(echo "$DOMAIN,$SANS" | sed -e 's/ //g; s/,$//; y/,/\n/' | sort -u)
fi
domains_in_csr=$(openssl req -text -noout -in "$csr_file" \
| sed -n -e 's/^ *Subject: .* CN=\([A-Za-z0-9.-]*\).*$/\1/p; /^ *DNS:.../ { s/ *DNS://g; y/,/\n/; p; }' \
| sort -u)
for d in $alldomains; do
if [[ "$(echo "${domains_in_csr}"| grep "^${d}$")" != "${d}" ]]; then
info "existing csr at $csr_file does not contain ${d} - re-create-csr"\
".... $(echo "${domains_in_csr}"| grep "^${d}$")"
_RECREATE_CSR=1
fi
done
# check all domains in csr are in config
if [[ "$alldomains" != "$domains_in_csr" ]]; then
info "existing csr at $csr_file does not have the same domains as the config - re-create-csr"
_RECREATE_CSR=1
fi
fi
# end of ... check if domain csr exists - if not then create it
# if CSR does not exist, or flag set to recreate, then create csr
if [[ ! -s "$csr_file" ]] || [[ "$_RECREATE_CSR" == "1" ]]; then
info "creating domain csr - $csr_file"
# create a temporary config file, for portability.
tmp_conf=$(mktemp 2>/dev/null || mktemp -t getssl)
cat "$SSLCONF" > "$tmp_conf"
printf "[SAN]\n%s" "$SANLIST" >> "$tmp_conf"
# add OCSP Must-Staple to the domain csr
# if openssl version >= 1.1.0 one can also use "tlsfeature = status_request"
if [[ "$OCSP_MUST_STAPLE" == "true" ]]; then
printf "\n1.3.6.1.5.5.7.1.24 = DER:30:03:02:01:05" >> "$tmp_conf"
fi
openssl req -new -sha256 -key "$csr_key" -subj "$CSR_SUBJECT" -reqexts SAN -config "$tmp_conf" > "$csr_file"
rm -f "$tmp_conf"
fi
}
create_key() { # create a domain key (if it doesn't already exist)
key_type=$1 # domain key type
key_loc=$2 # domain key location
key_len=$3 # domain key length - for rsa keys.
# check if key exists, if not then create it.
if [[ -s "$key_loc" ]]; then
debug "domain key exists at $key_loc - skipping generation"
# ideally need to check validity of domain key
else
umask 077
info "creating key - $key_loc"
case "$key_type" in
rsa)
openssl genrsa "$key_len" > "$key_loc";;
prime256v1|secp384r1|secp521r1)
openssl ecparam -genkey -name "$key_type" > "$key_loc";;
*)
error_exit "unknown private key algorithm type $key_loc";;
esac
umask "$ORIG_UMASK"
# remove csr on generation of new domain key
if [[ -e "${key_loc%.*}.csr" ]]; then
rm -f "${key_loc%.*}.csr"
fi
fi
}
create_order() {
dstring="["
for d in $alldomains; do
dstring="${dstring}{\"type\":\"dns\",\"value\":\"$d\"},"
done
dstring="${dstring::${#dstring}-1}]"
# request NewOrder currently seems to ignore the dates ....
# dstring="${dstring},\"notBefore\": \"$(date -d "-1 hour" --utc +%FT%TZ)\""
# dstring="${dstring},\"notAfter\": \"$(date -d "2 days" --utc +%FT%TZ)\""
request="{\"identifiers\": $dstring}"
send_signed_request "$URL_newOrder" "$request"
OrderLink=$(echo "$responseHeaders" | grep -i location | awk '{print $2}'| tr -d '\r\n ')
debug "Order link $OrderLink"
FinalizeLink=$(json_get "$response" "finalize")
dn=0
for d in $alldomains; do
# get authorizations link
AuthLink[$dn]=$(json_get "$response" "identifiers" "value" "$d" "authorizations" "x")
debug "authorizations link for $d - ${AuthLink[$dn]}"
((dn++))
done
}
date_epoc() { # convert the date into epoch time
if [[ "$os" == "bsd" ]]; then
date -j -f "%b %d %T %Y %Z" "$1" +%s
elif [[ "$os" == "mac" ]]; then
date -j -f "%b %d %T %Y %Z" "$1" +%s
elif [[ "$os" == "busybox" ]]; then
de_ld=$(echo "$1" | awk '{print $1 $2 $3 $4}')
date -D "%b %d %T %Y" -d "$de_ld" +%s
else
date -d "$1" +%s
fi
}
date_fmt() { # format date from epoc time to YYYY-MM-DD
if [[ "$os" == "bsd" ]]; then #uses older style date function.
date -j -f "%s" "$1" +%F
elif [[ "$os" == "mac" ]]; then # macOS uses older BSD style date.
date -j -f "%s" "$1" +%F
else
date -d "@$1" +%F
fi
}
date_renew() { # calculates the renewal time in epoch
date_now_s=$( date +%s )
echo "$((date_now_s + RENEW_ALLOW*24*60*60))"
}
debug() { # write out debug info if the debug flag has been set
if [[ ${_USE_DEBUG} -eq 1 ]]; then
echo " "
echo "$@"
fi
}
error_exit() { # give error message on error exit
echo -e "${PROGNAME}: ${1:-"Unknown Error"}" >&2
clean_up
exit 1
}
fulfill_challenges() {
dn=0
for d in $alldomains; do
# $d is domain in current loop, which is number $dn for ACL
info "Verifying $d"
if [[ "$USE_SINGLE_ACL" == "true" ]]; then
DOMAIN_ACL="${ACL[0]}"
else
DOMAIN_ACL="${ACL[$dn]}"
fi
# request a challenge token from ACME server
debug "Requesting challenge tokens"
if [[ $API -eq 1 ]]; then
request="{\"resource\":\"new-authz\",\"identifier\":{\"type\":\"dns\",\"value\":\"$d\"}}"
send_signed_request "$URL_new_authz" "$request"
debug "completed send_signed_request"
# check if we got a valid response and token, if not then error exit
if [[ -n "$code" ]] && [[ ! "$code" == '201' ]] ; then
error_exit "new-authz error: $response"
fi
else
send_signed_request "${AuthLink[$dn]}" ""
fi
if [[ $response_status == "valid" ]]; then
info "$d is already validated"
if [[ "$DEACTIVATE_AUTH" == "true" ]]; then
deactivate_url="$(echo "$responseHeaders" | awk ' $1 ~ "^Location" {print $2}' | tr -d "\r")"
deactivate_url_list+=" $deactivate_url "
debug "url added to deactivate list ${deactivate_url}"
debug "deactivate list is now $deactivate_url_list"
fi
# increment domain-counter
((dn++))
else
PREVIOUSLY_VALIDATED="false"
if [[ $VALIDATE_VIA_DNS == "true" ]]; then # set up the correct DNS token for verification
if [[ $API -eq 1 ]]; then
# get the dns component of the ACME response
# get the token from the dns component
token=$(json_get "$response" "token" "dns-01")
# get the uri from the dns component
uri=$(json_get "$response" "uri" "dns-01")
debug uri "$uri"
else # APIv2
debug "authlink response = $response"
# get the token from the http-01 component
token=$(json_get "$response" "challenges" "type" "dns-01" "token")
# get the uri from the http component
uri=$(json_get "$response" "challenges" "type" "dns-01" "url")
debug uri "$uri"
fi
keyauthorization="$token.$thumbprint"
debug keyauthorization "$keyauthorization"
#create signed authorization key from token.
auth_key=$(printf '%s' "$keyauthorization" | openssl dgst -sha256 -binary \
| openssl base64 -e \
| tr -d '\n\r' \
| sed -e 's:=*$::g' -e 'y:+/:-_:')
debug auth_key "$auth_key"
debug "adding dns via command: $DNS_ADD_COMMAND $d $auth_key"
if ! eval "$DNS_ADD_COMMAND" "$d" "$auth_key" ; then
error_exit "DNS_ADD_COMMAND failed for domain $d"
fi
# find a primary / authoritative DNS server for the domain
if [[ -z "$AUTH_DNS_SERVER" ]]; then
get_auth_dns "$d"
else
primary_ns="$AUTH_DNS_SERVER"
fi
debug primary_ns "$primary_ns"
# make a directory to hold pending dns-challenges
if [[ ! -d "$TEMP_DIR/dns_verify" ]]; then
mkdir "$TEMP_DIR/dns_verify"
fi
# generate a file with the current variables for the dns-challenge
cat > "$TEMP_DIR/dns_verify/$d" <<- _EOF_
token="${token}"
uri="${uri}"
keyauthorization="${keyauthorization}"
d="${d}"
primary_ns="${primary_ns}"
auth_key="${auth_key}"
_EOF_
else # set up the correct http token for verification
if [[ $API -eq 1 ]]; then
# get the token from the http component
token=$(json_get "$response" "token" "http-01")
# get the uri from the http component
uri=$(json_get "$response" "uri" "http-01")
debug uri "$uri"
else # APIv2
send_signed_request "${AuthLink[$dn]}" ""
debug "authlink response = $response"
# get the token from the http-01 component
token=$(json_get "$response" "challenges" "type" "http-01" "token")
# get the uri from the http component
uri=$(json_get "$response" "challenges" "type" "http-01" "url" | head -n1)
debug uri "$uri"
fi
#create signed authorization key from token.
keyauthorization="$token.$thumbprint"
# save variable into temporary file
echo -n "$keyauthorization" > "$TEMP_DIR/$token"
chmod 644 "$TEMP_DIR/$token"
# copy to token to acme challenge location
umask 0022
IFS=\; read -r -a token_locations <<<"$DOMAIN_ACL"
for t_loc in "${token_locations[@]}"; do
debug "copying file from $TEMP_DIR/$token to ${t_loc}"
copy_file_to_location "challenge token" \
"$TEMP_DIR/$token" \
"${t_loc}/$token"
done
umask "$ORIG_UMASK"
wellknown_url="${CHALLENGE_CHECK_TYPE}://${d}/.well-known/acme-challenge/$token"
debug wellknown_url "$wellknown_url"
if [[ "$SKIP_HTTP_TOKEN_CHECK" == "true" ]]; then
info "SKIP_HTTP_TOKEN_CHECK=true so not checking that token is working correctly"
else
sleep "$HTTP_TOKEN_CHECK_WAIT"
# check that we can reach the challenge ourselves, if not, then error
if [[ ! "$(curl --user-agent "$CURL_USERAGENT" -k --silent --location "$wellknown_url")" == "$keyauthorization" ]]; then
error_exit "for some reason could not reach $wellknown_url - please check it manually"
fi
fi
check_challenge_completion "$uri" "$d" "$keyauthorization"
debug "remove token from ${DOMAIN_ACL}"
IFS=\; read -r -a token_locations <<<"$DOMAIN_ACL"
for t_loc in "${token_locations[@]}"; do
if [[ "${t_loc:0:4}" == "ssh:" ]] ; then
sshhost=$(echo "${t_loc}"| awk -F: '{print $2}')
command="rm -f ${t_loc:(( ${#sshhost} + 5))}/${token:?}"
debug "running following command to remove token"
debug "ssh $SSH_OPTS $sshhost ${command}"
# shellcheck disable=SC2029
# shellcheck disable=SC2086
ssh $SSH_OPTS "$sshhost" "${command}" 1>/dev/null 2>&1
rm -f "${TEMP_DIR:?}/${token:?}"
elif [[ "${t_loc:0:4}" == "ftp:" ]] ; then
debug "using ftp to remove token file"
ftpuser=$(echo "${t_loc}"| awk -F: '{print $2}')
ftppass=$(echo "${t_loc}"| awk -F: '{print $3}')
ftphost=$(echo "${t_loc}"| awk -F: '{print $4}')
ftplocn=$(echo "${t_loc}"| awk -F: '{print $5}')
debug "ftp user=$ftpuser - pass=$ftppass - host=$ftphost location=$ftplocn"
ftp -n <<- EOF
open $ftphost
user $ftpuser $ftppass
cd $ftplocn
delete ${token:?}
EOF
else
rm -f "${t_loc:?}/${token:?}"
fi
done
fi
# increment domain-counter
((dn++))
fi
done # end of ... loop through domains for cert ( from SANS list)
# perform validation if via DNS challenge
if [[ $VALIDATE_VIA_DNS == "true" ]]; then
# loop through dns-variable files to check if dns has been changed
for dnsfile in "$TEMP_DIR"/dns_verify/*; do
if [[ -e "$dnsfile" ]]; then
debug "loading DNSfile: $dnsfile"
# shellcheck source=/dev/null
. "$dnsfile"
# check for token at public dns server, waiting for a valid response.
for ns in $primary_ns; do
debug "checking dns at $ns"
ntries=0
check_dns="fail"
while [[ "$check_dns" == "fail" ]]; do
if [[ "$os" == "cygwin" ]]; then
check_result=$(nslookup -type=txt "_acme-challenge.${d}" "${ns}" \
| grep ^_acme -A2\
| grep '"'|awk -F'"' '{ print $2}')
elif [[ "$DNS_CHECK_FUNC" == "drill" ]] || [[ "$DNS_CHECK_FUNC" == "dig" ]]; then
check_result=$($DNS_CHECK_FUNC TXT "_acme-challenge.${d}" "@${ns}" \
| grep '300 IN TXT'|awk -F'"' '{ print $2}')
elif [[ "$DNS_CHECK_FUNC" == "host" ]]; then
check_result=$($DNS_CHECK_FUNC -t TXT "_acme-challenge.${d}" "${ns}" \
| grep 'descriptive text'|awk -F'"' '{ print $2}')
else
check_result=$(nslookup -type=txt "_acme-challenge.${d}" "${ns}" \
| grep 'text ='|awk -F'"' '{ print $2}')
fi
debug "expecting $auth_key"
debug "${ns} gave ... $check_result"
if [[ "$check_result" == *"$auth_key"* ]]; then
check_dns="success"
else
if [[ $ntries -lt 100 ]]; then
ntries=$(( ntries + 1 ))
info "checking DNS at ${ns} for ${d}. Attempt $ntries/100 gave wrong result, "\
"waiting $DNS_WAIT secs before checking again"
sleep $DNS_WAIT
else
debug "dns check failed - removing existing value"
error_exit "checking _acme-challenge.${d} gave $check_result not $auth_key"
fi
fi
done
done
fi
done
if [[ "$DNS_EXTRA_WAIT" -gt 0 && "$PREVIOUSLY_VALIDATED" != "true" ]]; then
info "sleeping $DNS_EXTRA_WAIT seconds before asking the ACME-server to check the dns"
sleep "$DNS_EXTRA_WAIT"
fi
# loop through dns-variable files to let the ACME server check the challenges
for dnsfile in "$TEMP_DIR"/dns_verify/*; do
if [[ -e "$dnsfile" ]]; then
debug "loading DNSfile: $dnsfile"
# shellcheck source=/dev/null
. "$dnsfile"
check_challenge_completion "$uri" "$d" "$keyauthorization"
debug "remove DNS entry"
eval "$DNS_DEL_COMMAND" "$d" "$auth_key"
# remove $dnsfile after each loop.
rm -f "$dnsfile"