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acme.sh/dnsapi/dns_oci.sh
Sergey Ponomarev 6b7b5caf54 DNS provider API: structured description 
Instead of using comments declare info in a special variable.
Then the variable can be used to print the DNS API provider usage.
The usage can be parsed on UI and show all needed inputs for options.

The info is stored in plain string that it's both human-readable and easy to parse:

    dns_example_info='API name
     An extended description.
     Multiline.
    Domains: list of alternative domains to find
    Site: the dns provider website e.g. example.com
    Docs: Link to ACME.sh wiki for the provider
    Options:
     VARIABLE1 Title for the option1.
     VARIABLE2 Title for the option2. Default "default value".
     VARIABLE3 Title for the option3. Description to show on UI. Optional.
    Issues: Link to a support ticket on https://github.com/acmesh-official/acme.sh
    Author: First Lastname <authoremail@example.com>, Another Author <https://github.com/example>;
    '

Here:
VARIABLE1 will be required.
VARIABLE2 will be required too but will be populated with a "default value".
VARIABLE3 is optional and can be empty.

A DNS provider may have alternative options like CloudFlare may use API KEY or API Token.
You can use a second section OptionsAlt: section.

Some providers may have alternative names or domains e.g. Aliyun and AlibabaCloud.
Add them to Domains: section.

Signed-off-by: Sergey Ponomarev <stokito@gmail.com>
2024-05-18 12:06:41 +03:00

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#!/usr/bin/env sh
# shellcheck disable=SC2034
dns_oci_info='Oracle Cloud Infrastructure (OCI)
If OCI CLI configuration file ~/.oci/config has a DEFAULT profile then it will be used.
Site: Cloud.Oracle.com
Docs: github.com/acmesh-official/acme.sh/wiki/How-to-use-Oracle-Cloud-Infrastructure-DNS
Options:
OCI_CLI_TENANCY OCID of tenancy that contains the target DNS zone. Optional.
OCI_CLI_USER OCID of user with permission to add/remove records from zones. Optional.
OCI_CLI_REGION Should point to the tenancy home region. Optional.
OCI_CLI_KEY_FILE Path to private API signing key file in PEM format. Optional.
OCI_CLI_KEY The private API signing key in PEM format. Optional.
Issues: github.com/acmesh-official/acme.sh/issues/3540
Author: Avi Miller <me@dje.li>
'
# Copyright (c) 2021, Oracle and/or its affiliates
#
# The plugin will automatically use the default profile from an OCI SDK and CLI
# configuration file, if it exists.
#
# Alternatively, set the following environment variables:
# - OCI_CLI_TENANCY : OCID of tenancy that contains the target DNS zone
# - OCI_CLI_USER : OCID of user with permission to add/remove records from zones
# - OCI_CLI_REGION : Should point to the tenancy home region
#
# One of the following two variables is required:
# - OCI_CLI_KEY_FILE: Path to private API signing key file in PEM format; or
# - OCI_CLI_KEY : The private API signing key in PEM format
#
# NOTE: using an encrypted private key that needs a passphrase is not supported.
#
dns_oci_add() {
_fqdn="$1"
_rdata="$2"
if _get_oci_zone; then
_add_record_body="{\"items\":[{\"domain\":\"${_sub_domain}.${_domain}\",\"rdata\":\"$_rdata\",\"rtype\":\"TXT\",\"ttl\": 30,\"operation\":\"ADD\"}]}"
response=$(_signed_request "PATCH" "/20180115/zones/${_domain}/records" "$_add_record_body")
if [ "$response" ]; then
_info "Success: added TXT record for ${_sub_domain}.${_domain}."
else
_err "Error: failed to add TXT record for ${_sub_domain}.${_domain}."
_err "Check that the user has permission to add records to this zone."
return 1
fi
else
return 1
fi
}
dns_oci_rm() {
_fqdn="$1"
_rdata="$2"
if _get_oci_zone; then
_remove_record_body="{\"items\":[{\"domain\":\"${_sub_domain}.${_domain}\",\"rdata\":\"$_rdata\",\"rtype\":\"TXT\",\"operation\":\"REMOVE\"}]}"
response=$(_signed_request "PATCH" "/20180115/zones/${_domain}/records" "$_remove_record_body")
if [ "$response" ]; then
_info "Success: removed TXT record for ${_sub_domain}.${_domain}."
else
_err "Error: failed to remove TXT record for ${_sub_domain}.${_domain}."
_err "Check that the user has permission to remove records from this zone."
return 1
fi
else
return 1
fi
}
#################### Private functions below ##################################
_get_oci_zone() {
if ! _oci_config; then
return 1
fi
if ! _get_zone "$_fqdn"; then
_err "Error: DNS Zone not found for $_fqdn in $OCI_CLI_TENANCY"
return 1
fi
return 0
}
_oci_config() {
_DEFAULT_OCI_CLI_CONFIG_FILE="$HOME/.oci/config"
OCI_CLI_CONFIG_FILE="${OCI_CLI_CONFIG_FILE:-$(_readaccountconf_mutable OCI_CLI_CONFIG_FILE)}"
if [ -z "$OCI_CLI_CONFIG_FILE" ]; then
OCI_CLI_CONFIG_FILE="$_DEFAULT_OCI_CLI_CONFIG_FILE"
fi
if [ "$_DEFAULT_OCI_CLI_CONFIG_FILE" != "$OCI_CLI_CONFIG_FILE" ]; then
_saveaccountconf_mutable OCI_CLI_CONFIG_FILE "$OCI_CLI_CONFIG_FILE"
else
_clearaccountconf_mutable OCI_CLI_CONFIG_FILE
fi
_DEFAULT_OCI_CLI_PROFILE="DEFAULT"
OCI_CLI_PROFILE="${OCI_CLI_PROFILE:-$(_readaccountconf_mutable OCI_CLI_PROFILE)}"
if [ "$_DEFAULT_OCI_CLI_PROFILE" != "$OCI_CLI_PROFILE" ]; then
_saveaccountconf_mutable OCI_CLI_PROFILE "$OCI_CLI_PROFILE"
else
OCI_CLI_PROFILE="$_DEFAULT_OCI_CLI_PROFILE"
_clearaccountconf_mutable OCI_CLI_PROFILE
fi
OCI_CLI_TENANCY="${OCI_CLI_TENANCY:-$(_readaccountconf_mutable OCI_CLI_TENANCY)}"
if [ "$OCI_CLI_TENANCY" ]; then
_saveaccountconf_mutable OCI_CLI_TENANCY "$OCI_CLI_TENANCY"
elif [ -f "$OCI_CLI_CONFIG_FILE" ]; then
_debug "Reading OCI_CLI_TENANCY value from: $OCI_CLI_CONFIG_FILE"
OCI_CLI_TENANCY="${OCI_CLI_TENANCY:-$(_readini "$OCI_CLI_CONFIG_FILE" tenancy "$OCI_CLI_PROFILE")}"
fi
if [ -z "$OCI_CLI_TENANCY" ]; then
_err "Error: unable to read OCI_CLI_TENANCY from config file or environment variable."
return 1
fi
OCI_CLI_USER="${OCI_CLI_USER:-$(_readaccountconf_mutable OCI_CLI_USER)}"
if [ "$OCI_CLI_USER" ]; then
_saveaccountconf_mutable OCI_CLI_USER "$OCI_CLI_USER"
elif [ -f "$OCI_CLI_CONFIG_FILE" ]; then
_debug "Reading OCI_CLI_USER value from: $OCI_CLI_CONFIG_FILE"
OCI_CLI_USER="${OCI_CLI_USER:-$(_readini "$OCI_CLI_CONFIG_FILE" user "$OCI_CLI_PROFILE")}"
fi
if [ -z "$OCI_CLI_USER" ]; then
_err "Error: unable to read OCI_CLI_USER from config file or environment variable."
return 1
fi
OCI_CLI_REGION="${OCI_CLI_REGION:-$(_readaccountconf_mutable OCI_CLI_REGION)}"
if [ "$OCI_CLI_REGION" ]; then
_saveaccountconf_mutable OCI_CLI_REGION "$OCI_CLI_REGION"
elif [ -f "$OCI_CLI_CONFIG_FILE" ]; then
_debug "Reading OCI_CLI_REGION value from: $OCI_CLI_CONFIG_FILE"
OCI_CLI_REGION="${OCI_CLI_REGION:-$(_readini "$OCI_CLI_CONFIG_FILE" region "$OCI_CLI_PROFILE")}"
fi
if [ -z "$OCI_CLI_REGION" ]; then
_err "Error: unable to read OCI_CLI_REGION from config file or environment variable."
return 1
fi
OCI_CLI_KEY="${OCI_CLI_KEY:-$(_readaccountconf_mutable OCI_CLI_KEY)}"
if [ -z "$OCI_CLI_KEY" ]; then
_clearaccountconf_mutable OCI_CLI_KEY
OCI_CLI_KEY_FILE="${OCI_CLI_KEY_FILE:-$(_readini "$OCI_CLI_CONFIG_FILE" key_file "$OCI_CLI_PROFILE")}"
if [ "$OCI_CLI_KEY_FILE" ] && [ -f "$OCI_CLI_KEY_FILE" ]; then
_debug "Reading OCI_CLI_KEY value from: $OCI_CLI_KEY_FILE"
OCI_CLI_KEY=$(_base64 <"$OCI_CLI_KEY_FILE")
_saveaccountconf_mutable OCI_CLI_KEY "$OCI_CLI_KEY"
fi
else
_saveaccountconf_mutable OCI_CLI_KEY "$OCI_CLI_KEY"
fi
if [ -z "$OCI_CLI_KEY_FILE" ] && [ -z "$OCI_CLI_KEY" ]; then
_err "Error: unable to find key file path in OCI config file or OCI_CLI_KEY_FILE."
_err "Error: unable to load private API signing key from OCI_CLI_KEY."
return 1
fi
if [ "$(printf "%s\n" "$OCI_CLI_KEY" | wc -l)" -eq 1 ]; then
OCI_CLI_KEY=$(printf "%s" "$OCI_CLI_KEY" | _dbase64)
fi
return 0
}
# _get_zone(): retrieves the Zone name and OCID
#
# _sub_domain=_acme-challenge.www
# _domain=domain.com
# _domain_ociid=ocid1.dns-zone.oc1..
_get_zone() {
domain=$1
i=1
p=1
while true; do
h=$(printf "%s" "$domain" | cut -d . -f $i-100)
_debug h "$h"
if [ -z "$h" ]; then
# not valid
return 1
fi
_domain_id=$(_signed_request "GET" "/20180115/zones/$h" "" "id")
if [ "$_domain_id" ]; then
_sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
_domain=$h
_debug _domain_id "$_domain_id"
_debug _sub_domain "$_sub_domain"
_debug _domain "$_domain"
return 0
fi
p=$i
i=$(_math "$i" + 1)
done
return 1
}
#Usage: privatekey
#Output MD5 fingerprint
_fingerprint() {
pkey="$1"
if [ -z "$pkey" ]; then
_usage "Usage: _fingerprint privkey"
return 1
fi
printf "%s" "$pkey" | ${ACME_OPENSSL_BIN:-openssl} rsa -pubout -outform DER 2>/dev/null | ${ACME_OPENSSL_BIN:-openssl} md5 -c | cut -d = -f 2 | tr -d ' '
}
_signed_request() {
_sig_method="$1"
_sig_target="$2"
_sig_body="$3"
_return_field="$4"
_key_fingerprint=$(_fingerprint "$OCI_CLI_KEY")
_sig_host="dns.$OCI_CLI_REGION.oraclecloud.com"
_sig_keyId="$OCI_CLI_TENANCY/$OCI_CLI_USER/$_key_fingerprint"
_sig_alg="rsa-sha256"
_sig_version="1"
_sig_now="$(LC_ALL=C \date -u "+%a, %d %h %Y %H:%M:%S GMT")"
_request_method=$(printf %s "$_sig_method" | _lower_case)
_curl_method=$(printf %s "$_sig_method" | _upper_case)
_request_target="(request-target): $_request_method $_sig_target"
_date_header="date: $_sig_now"
_host_header="host: $_sig_host"
_string_to_sign="$_request_target\n$_date_header\n$_host_header"
_sig_headers="(request-target) date host"
if [ "$_sig_body" ]; then
_secure_debug3 _sig_body "$_sig_body"
_sig_body_sha256="x-content-sha256: $(printf %s "$_sig_body" | _digest sha256)"
_sig_body_type="content-type: application/json"
_sig_body_length="content-length: ${#_sig_body}"
_string_to_sign="$_string_to_sign\n$_sig_body_sha256\n$_sig_body_type\n$_sig_body_length"
_sig_headers="$_sig_headers x-content-sha256 content-type content-length"
fi
_tmp_file=$(_mktemp)
if [ -f "$_tmp_file" ]; then
printf '%s' "$OCI_CLI_KEY" >"$_tmp_file"
_signature=$(printf '%b' "$_string_to_sign" | _sign "$_tmp_file" sha256 | tr -d '\r\n')
rm -f "$_tmp_file"
fi
_signed_header="Authorization: Signature version=\"$_sig_version\",keyId=\"$_sig_keyId\",algorithm=\"$_sig_alg\",headers=\"$_sig_headers\",signature=\"$_signature\""
_secure_debug3 _signed_header "$_signed_header"
if [ "$_curl_method" = "GET" ]; then
export _H1="$_date_header"
export _H2="$_signed_header"
_response="$(_get "https://${_sig_host}${_sig_target}")"
elif [ "$_curl_method" = "PATCH" ]; then
export _H1="$_date_header"
# shellcheck disable=SC2090
export _H2="$_sig_body_sha256"
export _H3="$_sig_body_type"
export _H4="$_sig_body_length"
export _H5="$_signed_header"
_response="$(_post "$_sig_body" "https://${_sig_host}${_sig_target}" "" "PATCH")"
else
_err "Unable to process method: $_curl_method."
fi
_ret="$?"
if [ "$_return_field" ]; then
_response="$(echo "$_response" | sed 's/\\\"//g'))"
_return=$(echo "${_response}" | _egrep_o "\"$_return_field\"\\s*:\\s*\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d "\"")
else
_return="$_response"
fi
printf "%s" "$_return"
return $_ret
}
# file key [section]
_readini() {
_file="$1"
_key="$2"
_section="${3:-DEFAULT}"
_start_n=$(grep -n '\['"$_section"']' "$_file" | cut -d : -f 1)
_debug3 _start_n "$_start_n"
if [ -z "$_start_n" ]; then
_err "Can not find section: $_section"
return 1
fi
_start_nn=$(_math "$_start_n" + 1)
_debug3 "_start_nn" "$_start_nn"
_left="$(sed -n "${_start_nn},99999p" "$_file")"
_debug3 _left "$_left"
_end="$(echo "$_left" | grep -n "^\[" | _head_n 1)"
_debug3 "_end" "$_end"
if [ "$_end" ]; then
_end_n=$(echo "$_end" | cut -d : -f 1)
_debug3 "_end_n" "$_end_n"
_seg_n=$(echo "$_left" | sed -n "1,${_end_n}p")
else
_seg_n="$_left"
fi
_debug3 "_seg_n" "$_seg_n"
_lineini="$(echo "$_seg_n" | grep "^ *$_key *= *")"
_inivalue="$(printf "%b" "$(eval "echo $_lineini | sed \"s/^ *${_key} *= *//g\"")")"
_debug2 _inivalue "$_inivalue"
echo "$_inivalue"
}
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