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247 lines
7.0 KiB
Bash
247 lines
7.0 KiB
Bash
#!/usr/bin/env sh
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#
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# Acme.sh DNS API plugin for Oracle Cloud Infrastructure
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# Copyright (c) 2021, Oracle and/or its affiliates
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#
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# Required OCI CLI environment variables:
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# - OCI_CLI_TENANCY : OCID of tenancy that contains the target DNS zone
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# - OCI_CLI_USER : OCID of user with permission to add/remove records from zones
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# - OCI_CLI_REGION : Should point to the tenancy home region
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#
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# One of the following two variables is required:
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# - OCI_CLI_KEY_FILE: Path to private API signing key file in PEM format; or
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# - OCI_CLI_KEY : The private API signing key in PEM format
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#
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# NOTE: using an encrypted private key that needs a passphrase is not supported.
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#
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dns_oci_add() {
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_fqdn="$1"
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_rdata="$2"
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if _oci_config; then
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if [ "$_sub_domain" ] && [ "$_domain" ]; then
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_add_record_body="{\"items\":[{\"domain\":\"${_sub_domain}.${_domain}\",\"rdata\":\"$_rdata\",\"rtype\":\"TXT\",\"ttl\": 30,\"operation\":\"ADD\"}]}"
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response=$(_signed_request "PATCH" "/20180115/zones/${_domain}/records" "$_add_record_body")
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if [ "$response" ]; then
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_info "Success: added TXT record for ${_sub_domain}.${_domain}."
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else
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_err "Error: failed to add TXT record for ${_sub_domain}.${_domain}."
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return 1
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fi
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else
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return 1
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fi
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else
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return 1
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fi
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}
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dns_oci_rm() {
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_fqdn="$1"
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_rdata="$2"
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if _oci_config; then
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if [ "$_sub_domain" ] && [ "$_domain" ]; then
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_remove_record_body="{\"items\":[{\"domain\":\"${_sub_domain}.${_domain}\",\"rdata\":\"$_rdata\",\"rtype\":\"TXT\",\"operation\":\"REMOVE\"}]}"
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response=$(_signed_request "PATCH" "/20180115/zones/${_domain}/records" "$_remove_record_body")
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if [ "$response" ]; then
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_info "Success: removed TXT record for ${_sub_domain}.${_domain}."
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else
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_err "Error: failed to remove TXT record for ${_sub_domain}.${_domain}."
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return 1
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fi
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else
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return 1
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fi
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else
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return 1
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fi
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}
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#################### Private functions below ##################################
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_oci_config() {
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OCI_CLI_TENANCY="${OCI_CLI_TENANCY:-$(_readaccountconf_mutable OCI_CLI_TENANCY)}"
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OCI_CLI_USER="${OCI_CLI_USER:-$(_readaccountconf_mutable OCI_CLI_USER)}"
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OCI_CLI_KEY="${OCI_CLI_KEY:-$(_readaccountconf_mutable OCI_CLI_KEY)}"
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OCI_CLI_REGION="${OCI_CLI_REGION:-$(_readaccountconf_mutable OCI_CLI_REGION)}"
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_not_set=""
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_ret=0
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if [ -z "$OCI_CLI_KEY_FILE" ] && [ -z "$OCI_CLI_KEY" ]; then
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_err "Fatal: you must provide a value for either OCI_CLI_KEY_FILE or OCI_CLI_KEY."
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return 1
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fi
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if [ "$OCI_CLI_KEY_FILE" ] && [ -z "$OCI_CLI_KEY" ]; then
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if [ -f "$OCI_CLI_KEY_FILE" ]; then
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OCI_CLI_KEY=$(_base64 <"$OCI_CLI_KEY_FILE")
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else
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_err "Fatal: unable to read $OCI_CLI_KEY_FILE."
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return 1
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fi
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fi
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if [ -z "$OCI_CLI_TENANCY" ]; then
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_not_set="${_not_set}OCI_CLI_TENANCY "
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fi
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if [ -z "$OCI_CLI_USER" ]; then
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_not_set="${_not_set}OCI_CLI_USER "
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fi
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if [ -z "$OCI_CLI_REGION" ]; then
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_not_set="${_not_set}OCI_CLI_REGION "
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fi
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if [ "$_not_set" ]; then
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_err "Fatal: required environment variable(s): ${_not_set} not set."
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_ret=1
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else
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_saveaccountconf_mutable OCI_CLI_TENANCY "$OCI_CLI_TENANCY"
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_saveaccountconf_mutable OCI_CLI_USER "$OCI_CLI_USER"
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_saveaccountconf_mutable OCI_CLI_KEY "$OCI_CLI_KEY"
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_saveaccountconf_mutable OCI_CLI_REGION "$OCI_CLI_REGION"
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fi
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if ! _contains "PRIVATE KEY" "$OCI_CLI_KEY"; then
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OCI_CLI_KEY=$(printf "%s" "$OCI_CLI_KEY" | _dbase64 multiline)
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fi
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if ! _get_zone "$_fqdn"; then
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_err "Error: DNS Zone not found for $_fqdn."
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_ret=1
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fi
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return $_ret
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}
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# _get_zone(): retrieves the Zone name and OCID
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#
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# _sub_domain=_acme-challenge.www
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# _domain=domain.com
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# _domain_ociid=ocid1.dns-zone.oc1..
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_get_zone() {
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domain=$1
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i=1
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p=1
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while true; do
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h=$(printf "%s" "$domain" | cut -d . -f $i-100)
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_debug h "$h"
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if [ -z "$h" ]; then
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# not valid
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return 1
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fi
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_domain_id=$(_signed_request "GET" "/20180115/zones/$h" "" "id")
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if [ "$_domain_id" ]; then
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_sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
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_domain=$h
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_debug _domain_id "$_domain_id"
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_debug _sub_domain "$_sub_domain"
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_debug _domain "$_domain"
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return 0
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fi
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p=$i
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i=$(_math "$i" + 1)
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done
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return 1
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}
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#Usage: privatekey
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#Output MD5 fingerprint
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_fingerprint() {
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pkey="$1"
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if [ -z "$pkey" ]; then
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_usage "Usage: _fingerprint privkey"
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return 1
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fi
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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 ' '
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}
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_signed_request() {
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_sig_method="$1"
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_sig_target="$2"
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_sig_body="$3"
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_return_field="$4"
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_key_fingerprint=$(_fingerprint "$OCI_CLI_KEY")
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_sig_host="dns.$OCI_CLI_REGION.oraclecloud.com"
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_sig_keyId="$OCI_CLI_TENANCY/$OCI_CLI_USER/$_key_fingerprint"
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_sig_alg="rsa-sha256"
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_sig_version="1"
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_sig_now="$(LC_ALL=C \date -u "+%a, %d %h %Y %H:%M:%S GMT")"
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_request_method=$(printf %s "$_sig_method" | _lower_case)
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_curl_method=$(printf %s "$_sig_method" | _upper_case)
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_request_target="(request-target): $_request_method $_sig_target"
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_date_header="date: $_sig_now"
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_host_header="host: $_sig_host"
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_string_to_sign="$_request_target\n$_date_header\n$_host_header"
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_sig_headers="(request-target) date host"
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if [ "$_sig_body" ]; then
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_secure_debug3 _sig_body "$_sig_body"
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_sig_body_sha256="x-content-sha256: $(printf %s "$_sig_body" | _digest sha256)"
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_sig_body_type="content-type: application/json"
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_sig_body_length="content-length: ${#_sig_body}"
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_string_to_sign="$_string_to_sign\n$_sig_body_sha256\n$_sig_body_type\n$_sig_body_length"
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_sig_headers="$_sig_headers x-content-sha256 content-type content-length"
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fi
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_tmp_file=$(_mktemp)
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if [ -f "$_tmp_file" ]; then
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printf '%s' "$OCI_CLI_KEY" >"$_tmp_file"
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_signature=$(printf '%b' "$_string_to_sign" | _sign "$_tmp_file" sha256 | tr -d '\r\n')
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rm -f "$_tmp_file"
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fi
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_signed_header="Authorization: Signature version=\"$_sig_version\",keyId=\"$_sig_keyId\",algorithm=\"$_sig_alg\",headers=\"$_sig_headers\",signature=\"$_signature\""
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_secure_debug3 _signed_header "$_signed_header"
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if [ "$_curl_method" = "GET" ]; then
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export _H1="$_date_header"
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export _H2="$_signed_header"
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_response="$(_get "https://${_sig_host}${_sig_target}")"
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elif [ "$_curl_method" = "PATCH" ]; then
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export _H1="$_date_header"
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export _H2="$_sig_body_sha256"
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export _H3="$_sig_body_type"
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export _H4="$_sig_body_length"
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export _H5="$_signed_header"
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_response="$(_post "$_sig_body" "https://${_sig_host}${_sig_target}" "" "PATCH")"
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else
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_err "Unable to process method: $_curl_method."
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fi
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_ret="$?"
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if [ "$_return_field" ]; then
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_response="$(echo "$_response" | sed 's/\\\"//g'))"
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_return=$(echo "${_response}" | _egrep_o "\"$_return_field\"\\s*:\\s*\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d "\"")
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else
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_return="$_response"
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fi
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printf "%s" "$_return"
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return $_ret
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}
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