neil
GitHub
commit
8ed6be6307
466
dnsapi/dns_edgedns.sh
Executable file
466
dnsapi/dns_edgedns.sh
Executable file
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#!/usr/bin/env sh
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# Akamai Edge DNS v2 API
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# User must provide Open Edgegrid API credentials to the EdgeDNS installation. The remote user in EdgeDNS must have CRUD access to
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# Edge DNS Zones and Recordsets, e.g. DNS—Zone Record Management authorization
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# Report bugs to https://control.akamai.com/apps/support-ui/#/contact-support
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# Values to export:
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# --EITHER--
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# *** TBD. NOT IMPLEMENTED YET ***
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# specify Edgegrid credentials file and section
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# AKAMAI_EDGERC=<full file path>
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# AKAMAI_EDGERC_SECTION="default"
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## --OR--
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# specify indiviual credentials
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# export AKAMAI_HOST = <host>
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# export AKAMAI_ACCESS_TOKEN = <access token>
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# export AKAMAI_CLIENT_TOKEN = <client token>
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# export AKAMAI_CLIENT_SECRET = <client secret>
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ACME_EDGEDNS_VERSION="0.1.0"
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######## Public functions #####################
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# Usage: dns_edgedns_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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# Used to add txt record
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#
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dns_edgedns_add() {
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fulldomain=$1
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txtvalue=$2
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_debug "ENTERING DNS_EDGEDNS_ADD"
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_debug2 "fulldomain" "$fulldomain"
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_debug2 "txtvalue" "$txtvalue"
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if ! _EDGEDNS_credentials; then
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_err "$@"
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return 1
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fi
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if ! _EDGEDNS_getZoneInfo "$fulldomain"; then
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_err "Invalid domain"
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return 1
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fi
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_debug2 "Add: zone" "$zone"
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acmeRecordURI=$(printf "%s/%s/names/%s/types/TXT" "$edge_endpoint" "$zone" "$fulldomain")
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_debug3 "Add URL" "$acmeRecordURI"
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# Get existing TXT record
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_edge_result=$(_edgedns_rest GET "$acmeRecordURI")
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_api_status="$?"
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_debug3 "_edge_result" "$_edge_result"
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if [ "$_api_status" -ne 0 ]; then
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if [ "$curResult" = "FATAL" ]; then
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_err "$(printf "Fatal error: acme API function call : %s" "$retVal")"
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fi
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if [ "$_edge_result" != "404" ]; then
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_err "$(printf "Failure accessing Akamai Edge DNS API Server. Error: %s" "$_edge_result")"
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return 1
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fi
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fi
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rdata="\"${txtvalue}\""
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record_op="POST"
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if [ "$_api_status" -eq 0 ]; then
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# record already exists. Get existing record data and update
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record_op="PUT"
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rdlist="${_edge_result#*\"rdata\":[}"
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rdlist="${rdlist%%]*}"
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rdlist=$(echo "$rdlist" | tr -d '"' | tr -d "\\\\")
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_debug3 "existing TXT found"
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_debug3 "record data" "$rdlist"
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# value already there?
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if _contains "$rdlist" "$txtvalue"; then
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return 0
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fi
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_txt_val=""
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while [ "$_txt_val" != "$rdlist" ] && [ "${rdlist}" ]; do
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_txt_val="${rdlist%%,*}"
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rdlist="${rdlist#*,}"
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rdata="${rdata},\"${_txt_val}\""
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done
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fi
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# Add the txtvalue TXT Record
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body="{\"name\":\"$fulldomain\",\"type\":\"TXT\",\"ttl\":600, \"rdata\":"[${rdata}]"}"
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_debug3 "Add body '${body}'"
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_edge_result=$(_edgedns_rest "$record_op" "$acmeRecordURI" "$body")
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_api_status="$?"
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if [ "$_api_status" -eq 0 ]; then
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_log "$(printf "Text value %s added to recordset %s" "$txtvalue" "$fulldomain")"
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return 0
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else
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_err "$(printf "error adding TXT record for validation. Error: %s" "$_edge_result")"
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return 1
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fi
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}
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# Usage: dns_edgedns_rm _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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# Used to delete txt record
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#
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dns_edgedns_rm() {
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fulldomain=$1
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txtvalue=$2
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_debug "ENTERING DNS_EDGEDNS_RM"
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_debug2 "fulldomain" "$fulldomain"
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_debug2 "txtvalue" "$txtvalue"
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if ! _EDGEDNS_credentials; then
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_err "$@"
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return 1
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fi
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if ! _EDGEDNS_getZoneInfo "$fulldomain"; then
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_err "Invalid domain"
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return 1
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fi
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_debug2 "RM: zone" "${zone}"
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acmeRecordURI=$(printf "%s/%s/names/%s/types/TXT" "${edge_endpoint}" "$zone" "$fulldomain")
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_debug3 "RM URL" "$acmeRecordURI"
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# Get existing TXT record
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_edge_result=$(_edgedns_rest GET "$acmeRecordURI")
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_api_status="$?"
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if [ "$_api_status" -ne 0 ]; then
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if [ "$curResult" = "FATAL" ]; then
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_err "$(printf "Fatal error: acme API function call : %s" "$retVal")"
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fi
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if [ "$_edge_result" != "404" ]; then
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_err "$(printf "Failure accessing Akamai Edge DNS API Server. Error: %s" "$_edge_result")"
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return 1
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fi
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fi
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_debug3 "_edge_result" "$_edge_result"
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record_op="DELETE"
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body=""
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if [ "$_api_status" -eq 0 ]; then
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# record already exists. Get existing record data and update
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rdlist="${_edge_result#*\"rdata\":[}"
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rdlist="${rdlist%%]*}"
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rdlist=$(echo "$rdlist" | tr -d '"' | tr -d "\\\\")
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_debug3 "rdlist" "$rdlist"
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if [ -n "$rdlist" ]; then
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record_op="PUT"
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comma=""
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rdata=""
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_txt_val=""
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while [ "$_txt_val" != "$rdlist" ] && [ "$rdlist" ]; do
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_txt_val="${rdlist%%,*}"
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rdlist="${rdlist#*,}"
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_debug3 "_txt_val" "$_txt_val"
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_debug3 "txtvalue" "$txtvalue"
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if ! _contains "$_txt_val" "$txtvalue"; then
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rdata="${rdata}${comma}\"${_txt_val}\""
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comma=","
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fi
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done
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if [ -z "$rdata" ]; then
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record_op="DELETE"
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else
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# Recreate the txtvalue TXT Record
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body="{\"name\":\"$fulldomain\",\"type\":\"TXT\",\"ttl\":600, \"rdata\":"[${rdata}]"}"
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_debug3 "body" "$body"
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fi
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fi
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fi
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_edge_result=$(_edgedns_rest "$record_op" "$acmeRecordURI" "$body")
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_api_status="$?"
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if [ "$_api_status" -eq 0 ]; then
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_log "$(printf "Text value %s removed from recordset %s" "$txtvalue" "$fulldomain")"
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return 0
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else
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_err "$(printf "error removing TXT record for validation. Error: %s" "$_edge_result")"
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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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_EDGEDNS_credentials() {
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_debug "GettingEdge DNS credentials"
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_log "$(printf "ACME DNSAPI Edge DNS version %s" ${ACME_EDGEDNS_VERSION})"
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args_missing=0
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if [ -z "$AKAMAI_ACCESS_TOKEN" ]; then
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AKAMAI_ACCESS_TOKEN=""
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AKAMAI_CLIENT_TOKEN=""
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AKAMAI_HOST=""
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AKAMAI_CLIENT_SECRET=""
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_err "AKAMAI_ACCESS_TOKEN is missing"
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args_missing=1
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fi
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if [ -z "$AKAMAI_CLIENT_TOKEN" ]; then
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AKAMAI_ACCESS_TOKEN=""
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AKAMAI_CLIENT_TOKEN=""
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AKAMAI_HOST=""
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AKAMAI_CLIENT_SECRET=""
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_err "AKAMAI_CLIENT_TOKEN is missing"
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args_missing=1
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fi
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if [ -z "$AKAMAI_HOST" ]; then
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AKAMAI_ACCESS_TOKEN=""
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AKAMAI_CLIENT_TOKEN=""
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AKAMAI_HOST=""
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AKAMAI_CLIENT_SECRET=""
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_err "AKAMAI_HOST is missing"
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args_missing=1
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fi
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if [ -z "$AKAMAI_CLIENT_SECRET" ]; then
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AKAMAI_ACCESS_TOKEN=""
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AKAMAI_CLIENT_TOKEN=""
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AKAMAI_HOST=""
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AKAMAI_CLIENT_SECRET=""
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_err "AKAMAI_CLIENT_SECRET is missing"
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args_missing=1
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fi
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if [ "$args_missing" = 1 ]; then
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_err "You have not properly specified the EdgeDNS Open Edgegrid API credentials. Please try again."
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return 1
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else
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_saveaccountconf_mutable AKAMAI_ACCESS_TOKEN "$AKAMAI_ACCESS_TOKEN"
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_saveaccountconf_mutable AKAMAI_CLIENT_TOKEN "$AKAMAI_CLIENT_TOKEN"
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_saveaccountconf_mutable AKAMAI_HOST "$AKAMAI_HOST"
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_saveaccountconf_mutable AKAMAI_CLIENT_SECRET "$AKAMAI_CLIENT_SECRET"
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# Set whether curl should use secure or insecure mode
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fi
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export HTTPS_INSECURE=0 # All Edgegrid API calls are secure
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edge_endpoint=$(printf "https://%s/config-dns/v2/zones" "$AKAMAI_HOST")
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_debug3 "Edge API Endpoint:" "$edge_endpoint"
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}
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_EDGEDNS_getZoneInfo() {
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_debug "Getting Zoneinfo"
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zoneEnd=false
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curZone=$1
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while [ -n "$zoneEnd" ]; do
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# we can strip the first part of the fulldomain, since its just the _acme-challenge string
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curZone="${curZone#*.}"
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# suffix . needed for zone -> domain.tld.
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# create zone get url
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get_zone_url=$(printf "%s/%s" "$edge_endpoint" "$curZone")
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_debug3 "Zone Get: " "${get_zone_url}"
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curResult=$(_edgedns_rest GET "$get_zone_url")
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retVal=$?
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if [ "$retVal" -ne 0 ]; then
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if [ "$curResult" = "FATAL" ]; then
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_err "$(printf "Fatal error: acme API function call : %s" "$retVal")"
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fi
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if [ "$curResult" != "404" ]; then
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_err "$(printf "Managed zone validation failed. Error response: %s" "$retVal")"
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return 1
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fi
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fi
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if _contains "$curResult" "\"zone\":"; then
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_debug2 "Zone data" "${curResult}"
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zone=$(echo "${curResult}" | _egrep_o "\"zone\"\\s*:\\s*\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d "\"")
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_debug3 "Zone" "${zone}"
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zoneEnd=""
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return 0
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fi
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if [ "${curZone#*.}" != "$curZone" ]; then
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_debug3 "$(printf "%s still contains a '.' - so we can check next higher level" "$curZone")"
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else
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zoneEnd=true
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_err "Couldn't retrieve zone data."
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return 1
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fi
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done
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_err "Failed to retrieve zone data."
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return 2
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}
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_edgedns_headers=""
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_edgedns_rest() {
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_debug "Handling API Request"
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m=$1
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# Assume endpoint is complete path, including query args if applicable
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ep=$2
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body_data=$3
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_edgedns_content_type=""
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_request_url_path="$ep"
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_request_body="$body_data"
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_request_method="$m"
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_edgedns_headers=""
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tab=""
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_edgedns_headers="${_edgedns_headers}${tab}Host: ${AKAMAI_HOST}"
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tab="\t"
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# Set in acme.sh _post/_get
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#_edgedns_headers="${_edgedns_headers}${tab}User-Agent:ACME DNSAPI Edge DNS version ${ACME_EDGEDNS_VERSION}"
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_edgedns_headers="${_edgedns_headers}${tab}Accept: application/json,*/*"
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if [ "$m" != "GET" ] && [ "$m" != "DELETE" ]; then
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_edgedns_content_type="application/json"
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_debug3 "_request_body" "$_request_body"
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_body_len=$(echo "$_request_body" | tr -d "\n\r" | awk '{print length}')
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_edgedns_headers="${_edgedns_headers}${tab}Content-Length: ${_body_len}"
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fi
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_edgedns_make_auth_header
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_edgedns_headers="${_edgedns_headers}${tab}Authorization: ${_signed_auth_header}"
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_secure_debug2 "Made Auth Header" "$_signed_auth_header"
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hdr_indx=1
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work_header="${_edgedns_headers}${tab}"
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_debug3 "work_header" "$work_header"
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while [ "$work_header" ]; do
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entry="${work_header%%\\t*}"
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work_header="${work_header#*\\t}"
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export "$(printf "_H%s=%s" "$hdr_indx" "$entry")"
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_debug2 "Request Header " "$entry"
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hdr_indx=$((hdr_indx + 1))
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done
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# clear headers from previous request to avoid getting wrong http code on timeouts
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: >"$HTTP_HEADER"
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_debug2 "$ep"
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if [ "$m" != "GET" ]; then
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_debug3 "Method data" "$data"
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# body url [needbase64] [POST|PUT|DELETE] [ContentType]
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response=$(_post "$_request_body" "$ep" false "$m" "$_edgedns_content_type")
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else
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response=$(_get "$ep")
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fi
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_ret="$?"
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if [ "$_ret" -ne 0 ]; then
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_err "$(printf "acme.sh API function call failed. Error: %s" "$_ret")"
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echo "FATAL"
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return "$_ret"
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fi
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_debug2 "response" "${response}"
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_code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\\r\\n")"
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_debug2 "http response code" "$_code"
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if [ "$_code" = "200" ] || [ "$_code" = "201" ]; then
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# All good
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response="$(echo "${response}" | _normalizeJson)"
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echo "$response"
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return 0
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fi
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||||||
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if [ "$_code" = "204" ]; then
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# Success, no body
|
||||||
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echo "$_code"
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||||||
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return 0
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||||||
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fi
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||||||
|
|
||||||
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if [ "$_code" = "400" ]; then
|
||||||
|
_err "Bad request presented"
|
||||||
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_log "$(printf "Headers: %s" "$_edgedns_headers")"
|
||||||
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_log "$(printf "Method: %s" "$_request_method")"
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||||||
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_log "$(printf "URL: %s" "$ep")"
|
||||||
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_log "$(printf "Data: %s" "$data")"
|
||||||
|
fi
|
||||||
|
|
||||||
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if [ "$_code" = "403" ]; then
|
||||||
|
_err "access denied make sure your Edgegrid cedentials are correct."
|
||||||
|
fi
|
||||||
|
|
||||||
|
echo "$_code"
|
||||||
|
return 1
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_eg_timestamp() {
|
||||||
|
_debug "Generating signature Timestamp"
|
||||||
|
_debug3 "Retriving ntp time"
|
||||||
|
_timeheaders="$(_get "https://www.ntp.org" "onlyheader")"
|
||||||
|
_debug3 "_timeheaders" "$_timeheaders"
|
||||||
|
_ntpdate="$(echo "$_timeheaders" | grep -i "Date:" | _head_n 1 | cut -d ':' -f 2- | tr -d "\r\n")"
|
||||||
|
_debug3 "_ntpdate" "$_ntpdate"
|
||||||
|
_ntpdate="$(echo "${_ntpdate}" | sed -e 's/^[[:space:]]*//')"
|
||||||
|
_debug3 "_NTPDATE" "$_ntpdate"
|
||||||
|
_ntptime="$(echo "${_ntpdate}" | _head_n 1 | cut -d " " -f 5 | tr -d "\r\n")"
|
||||||
|
_debug3 "_ntptime" "$_ntptime"
|
||||||
|
_eg_timestamp=$(date -u "+%Y%m%dT")
|
||||||
|
_eg_timestamp="$(printf "%s%s+0000" "$_eg_timestamp" "$_ntptime")"
|
||||||
|
_debug "_eg_timestamp" "$_eg_timestamp"
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_new_nonce() {
|
||||||
|
_debug "Generating Nonce"
|
||||||
|
_nonce=$(echo "EDGEDNS$(_time)" | _digest sha1 hex | cut -c 1-32)
|
||||||
|
_debug3 "_nonce" "$_nonce"
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_make_auth_header() {
|
||||||
|
_debug "Constructing Auth Header"
|
||||||
|
_edgedns_new_nonce
|
||||||
|
_edgedns_eg_timestamp
|
||||||
|
# "Unsigned authorization header: 'EG1-HMAC-SHA256 client_token=block;access_token=block;timestamp=20200806T14:16:33+0000;nonce=72cde72c-82d9-4721-9854-2ba057929d67;'"
|
||||||
|
_auth_header="$(printf "EG1-HMAC-SHA256 client_token=%s;access_token=%s;timestamp=%s;nonce=%s;" "$AKAMAI_CLIENT_TOKEN" "$AKAMAI_ACCESS_TOKEN" "$_eg_timestamp" "$_nonce")"
|
||||||
|
_secure_debug2 "Unsigned Auth Header: " "$_auth_header"
|
||||||
|
|
||||||
|
_edgedns_sign_request
|
||||||
|
_signed_auth_header="$(printf "%ssignature=%s" "$_auth_header" "$_signed_req")"
|
||||||
|
_secure_debug2 "Signed Auth Header: " "${_signed_auth_header}"
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_sign_request() {
|
||||||
|
_debug2 "Signing http request"
|
||||||
|
_edgedns_make_data_to_sign "$_auth_header"
|
||||||
|
_secure_debug2 "Returned signed data" "$_mdata"
|
||||||
|
_edgedns_make_signing_key "$_eg_timestamp"
|
||||||
|
_edgedns_base64_hmac_sha256 "$_mdata" "$_signing_key"
|
||||||
|
_signed_req="$_hmac_out"
|
||||||
|
_secure_debug2 "Signed Request" "$_signed_req"
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_make_signing_key() {
|
||||||
|
_debug2 "Creating sigining key"
|
||||||
|
ts=$1
|
||||||
|
_edgedns_base64_hmac_sha256 "$ts" "$AKAMAI_CLIENT_SECRET"
|
||||||
|
_signing_key="$_hmac_out"
|
||||||
|
_secure_debug2 "Signing Key" "$_signing_key"
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_make_data_to_sign() {
|
||||||
|
_debug2 "Processing data to sign"
|
||||||
|
hdr=$1
|
||||||
|
_secure_debug2 "hdr" "$hdr"
|
||||||
|
_edgedns_make_content_hash
|
||||||
|
path="$(echo "$_request_url_path" | tr -d "\n\r" | sed 's/https\?:\/\///')"
|
||||||
|
path="${path#*$AKAMAI_HOST}"
|
||||||
|
_debug "hier path" "$path"
|
||||||
|
# dont expose headers to sign so use MT string
|
||||||
|
_mdata="$(printf "%s\thttps\t%s\t%s\t%s\t%s\t%s" "$_request_method" "$AKAMAI_HOST" "$path" "" "$_hash" "$hdr")"
|
||||||
|
_secure_debug2 "Data to Sign" "$_mdata"
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_make_content_hash() {
|
||||||
|
_debug2 "Generating content hash"
|
||||||
|
_hash=""
|
||||||
|
_debug2 "Request method" "${_request_method}"
|
||||||
|
if [ "$_request_method" != "POST" ] || [ -z "$_request_body" ]; then
|
||||||
|
return 0
|
||||||
|
fi
|
||||||
|
_debug2 "Req body" "$_request_body"
|
||||||
|
_edgedns_base64_sha256 "$_request_body"
|
||||||
|
_hash="$_sha256_out"
|
||||||
|
_debug2 "Content hash" "$_hash"
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_base64_hmac_sha256() {
|
||||||
|
_debug2 "Generating hmac"
|
||||||
|
data=$1
|
||||||
|
key=$2
|
||||||
|
encoded_data="$(echo "$data" | iconv -t utf-8)"
|
||||||
|
encoded_key="$(echo "$key" | iconv -t utf-8)"
|
||||||
|
_secure_debug2 "encoded data" "$encoded_data"
|
||||||
|
_secure_debug2 "encoded key" "$encoded_key"
|
||||||
|
|
||||||
|
encoded_key_hex=$(printf "%s" "$encoded_key" | _hex_dump | tr -d ' ')
|
||||||
|
data_sig="$(echo "$encoded_data" | tr -d "\n\r" | _hmac sha256 "$encoded_key_hex" | _base64)"
|
||||||
|
|
||||||
|
_secure_debug2 "data_sig:" "$data_sig"
|
||||||
|
_hmac_out="$(echo "$data_sig" | tr -d "\n\r" | iconv -f utf-8)"
|
||||||
|
_secure_debug2 "hmac" "$_hmac_out"
|
||||||
|
}
|
||||||
|
|
||||||
|
_edgedns_base64_sha256() {
|
||||||
|
_debug2 "Creating sha256 digest"
|
||||||
|
trg=$1
|
||||||
|
_secure_debug2 "digest data" "$trg"
|
||||||
|
digest="$(echo "$trg" | tr -d "\n\r" | _digest "sha256")"
|
||||||
|
_sha256_out="$(echo "$digest" | tr -d "\n\r" | iconv -f utf-8)"
|
||||||
|
_secure_debug2 "digest decode" "$_sha256_out"
|
||||||
|
}
|
||||||
|
|
||||||
|
#_edgedns_parse_edgerc() {
|
||||||
|
# filepath=$1
|
||||||
|
# section=$2
|
||||||
|
#}
|
||||||
Loading…
Reference in New Issue
Block a user