mirror of
https://codeberg.org/shm0rt/ddns-pdns-updater.git
synced 2025-07-29 13:39:06 +02:00
313 lines
10 KiB
Bash
Executable file
313 lines
10 KiB
Bash
Executable file
#!/bin/bash
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# pdns-ddns - Updates both Infomaniak and PowerDNS with external IP
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# Speichern als: /usr/local/bin/pdns-ddns
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# Load config
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source /etc/powerdns/ddns.conf
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# IP History file
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IP_HISTORY_FILE="/var/log/ddns-ip-history.log"
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# ============================================================================
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# LOGGING FUNCTIONS
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# ============================================================================
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log_info() {
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echo "$(date): $1"
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}
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log_error() {
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echo "$(date): ERROR: $1"
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}
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log_success() {
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echo "$(date): SUCCESS: $1"
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}
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log_change() {
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local message="$1"
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echo "$(date): $message"
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echo "$(date): $message" >> "$IP_HISTORY_FILE"
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}
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log_history() {
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echo "$(date): $1" >> "$IP_HISTORY_FILE"
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}
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# ============================================================================
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# IP CHANGE DETECTION
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# ============================================================================
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check_ip_change() {
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# Get external IP
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EXTERNAL_IP=$(curl -s ifconfig.me)
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if [[ ! $EXTERNAL_IP =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
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log_error "Invalid IP address: $EXTERNAL_IP"
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exit 1
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fi
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# Read last known IP
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local last_ip=""
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if [[ -f "$IP_HISTORY_FILE" ]]; then
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last_ip=$(grep "IP changed from" "$IP_HISTORY_FILE" | tail -1 | sed 's/.*to \([0-9.]*\)$/\1/')
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fi
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# Check if IP changed
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if [[ -n "$last_ip" && "$last_ip" != "$EXTERNAL_IP" ]]; then
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log_info "External IP: $EXTERNAL_IP"
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log_change "IP changed from $last_ip to $EXTERNAL_IP"
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log_info "Previous IPs in last 10 changes:"
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grep "IP changed from" "$IP_HISTORY_FILE" | tail -10 | sed 's/.*from \([0-9.]*\) to \([0-9.]*\)$/Old: \1 -> New: \2/' || log_info "No previous changes found"
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return 1 # IP changed = update needed
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elif [[ -z "$last_ip" ]]; then
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log_info "External IP: $EXTERNAL_IP"
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log_info "First run or no history - checking DNS records"
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return 1 # First run = update needed
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else
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# IP unchanged - only return 1 if we need to check DNS consistency
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return 0 # No change needed
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fi
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}
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# ============================================================================
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# EXTERNAL DNS (INFOMANIAK) FUNCTIONS
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# ============================================================================
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check_external_dns() {
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local current_record=$(curl -s -H "Authorization: Bearer $INFOMANIAK_TOKEN" \
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"https://api.infomaniak.com/2/zones/$INFOMANIAK_DOMAIN/records" | \
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jq -r '.data[] | select(.type=="A" and .source==".") | .target' | head -1)
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if [[ "$current_record" == "$EXTERNAL_IP" ]]; then
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return 0 # No update needed - silent success
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else
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log_info "Checking Infomaniak A record for $INFOMANIAK_DOMAIN..."
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if [[ -n "$current_record" ]]; then
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log_change "Infomaniak A record needs update: $current_record -> $EXTERNAL_IP"
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else
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log_change "Infomaniak A record does not exist, creating with IP: $EXTERNAL_IP"
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fi
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return 1 # Update needed
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fi
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}
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update_external_dns() {
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log_info "Updating Infomaniak DNS..."
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local record_id=$(curl -s -H "Authorization: Bearer $INFOMANIAK_TOKEN" \
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"https://api.infomaniak.com/2/zones/$INFOMANIAK_DOMAIN/records" | \
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jq -r '.data[] | select(.type=="A" and .source==".") | .id' | head -1)
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if [[ -z "$record_id" ]]; then
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log_info "Creating new Infomaniak A record..."
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if curl -s -X POST "https://api.infomaniak.com/2/zones/$INFOMANIAK_DOMAIN/records" \
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-H "Authorization: Bearer $INFOMANIAK_TOKEN" \
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-H "Content-Type: application/json" \
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-d "{\"type\": \"A\", \"source\": \".\", \"target\": \"$EXTERNAL_IP\", \"ttl\": $TTL}" > /dev/null; then
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log_success "Infomaniak A record created"
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log_history "Infomaniak created: -> $EXTERNAL_IP"
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else
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log_error "Failed to create Infomaniak A record"
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return 1
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fi
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else
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log_info "Updating existing Infomaniak A record..."
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if curl -s -X PUT "https://api.infomaniak.com/2/zones/$INFOMANIAK_DOMAIN/records/$record_id" \
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-H "Authorization: Bearer $INFOMANIAK_TOKEN" \
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-H "Content-Type: application/json" \
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-d "{\"target\": \"$EXTERNAL_IP\", \"ttl\": $TTL}" > /dev/null; then
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log_success "Infomaniak A record updated"
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log_history "Infomaniak change: -> $EXTERNAL_IP"
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else
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log_error "Failed to update Infomaniak A record"
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return 1
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fi
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fi
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return 0
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}
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# ============================================================================
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# INTERNAL DNS (POWERDNS) FUNCTIONS
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# ============================================================================
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ensure_zone_exists() {
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local domain="$1"
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if ! pdnsutil list-zone "$domain" >/dev/null 2>&1; then
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log_info "Zone $domain does not exist, creating..."
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log_history "PowerDNS $domain zone created"
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pdnsutil create-zone "$domain"
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return 1 # Zone was created, needs update
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fi
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return 0 # Zone exists
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}
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check_powerdns_record() {
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local domain="$1"
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local record_type="$2" # "@" for root, "*" for wildcard
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local display_name="$3"
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local current_ip
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if [[ "$record_type" == "@" ]]; then
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current_ip=$(pdnsutil list-zone "$domain" 2>/dev/null | grep -E "^${domain}\s+[0-9]+\s+IN\s+A\s+" | awk '{print $5}' | head -1)
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else
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current_ip=$(pdnsutil list-zone "$domain" 2>/dev/null | grep -E "^\*\.${domain}\s+[0-9]+\s+IN\s+A\s+" | awk '{print $5}' | head -1)
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fi
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if [[ "$current_ip" == "$EXTERNAL_IP" ]]; then
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return 0 # No update needed - silent success
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else
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if [[ -n "$current_ip" ]]; then
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log_change "PowerDNS A record for $display_name needs update: $current_ip -> $EXTERNAL_IP"
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else
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log_change "PowerDNS A record for $display_name does not exist, creating with IP: $EXTERNAL_IP"
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fi
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return 1 # Update needed
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fi
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}
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update_powerdns_record() {
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local domain="$1"
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local record_type="$2" # "@" for root, "*" for wildcard
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local display_name="$3"
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log_info "Updating PowerDNS A record for $display_name..."
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if pdnsutil replace-rrset "$domain" "$record_type" A "$TTL" "$EXTERNAL_IP" 2>/dev/null; then
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log_success "PowerDNS A record updated for $display_name"
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log_history "PowerDNS $display_name updated: -> $EXTERNAL_IP"
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pdnsutil rectify-zone "$domain" 2>/dev/null
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pdnsutil increase-serial "$domain" 2>/dev/null
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return 0
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else
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log_error "Failed to update PowerDNS A record for $display_name"
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return 1
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fi
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}
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check_internal_dns() {
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local needs_update=false
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local needs_logging=false
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for domain in $POWERDNS_DOMAINS; do
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# Ensure zone exists (this might need logging)
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if ! pdnsutil list-zone "$domain" >/dev/null 2>&1; then
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if [[ "$needs_logging" == "false" ]]; then
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log_info "Checking PowerDNS A records..."
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needs_logging=true
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fi
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log_info "Zone $domain does not exist, creating..."
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log_history "PowerDNS $domain zone created"
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pdnsutil create-zone "$domain"
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needs_update=true
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fi
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# Check root A record
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if ! check_powerdns_record "$domain" "@" "$domain"; then
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if [[ "$needs_logging" == "false" ]]; then
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log_info "Checking PowerDNS A records..."
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needs_logging=true
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fi
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needs_update=true
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fi
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# Check wildcard A record
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if ! check_powerdns_record "$domain" "*" "*.${domain}"; then
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if [[ "$needs_logging" == "false" ]]; then
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log_info "Checking PowerDNS A records..."
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needs_logging=true
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fi
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needs_update=true
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fi
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done
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if [[ "$needs_update" == "true" ]]; then
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return 1 # Update needed
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else
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return 0 # No update needed - was completely silent
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fi
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}
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update_internal_dns() {
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log_info "Updating PowerDNS records..."
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for domain in $POWERDNS_DOMAINS; do
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log_info "Processing zone $domain..."
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# Ensure zone exists
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ensure_zone_exists "$domain"
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# Update root A record if needed
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if ! check_powerdns_record "$domain" "@" "$domain"; then
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update_powerdns_record "$domain" "@" "$domain"
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fi
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# Update wildcard A record if needed
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if ! check_powerdns_record "$domain" "*" "*.${domain}"; then
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update_powerdns_record "$domain" "*" "*.${domain}"
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fi
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done
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}
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# ============================================================================
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# MAIN EXECUTION
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# ============================================================================
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main() {
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# Check if IP changed
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if ! check_ip_change; then
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# IP unchanged - check if DNS is consistent
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local external_needs_update=false
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local internal_needs_update=false
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if ! check_external_dns; then
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external_needs_update=true
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fi
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if ! check_internal_dns; then
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internal_needs_update=true
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fi
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# If everything is consistent, exit silently
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if [[ "$external_needs_update" == "false" && "$internal_needs_update" == "false" ]]; then
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exit 0
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fi
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# If we reach here, something needs fixing
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log_info "External IP: $EXTERNAL_IP"
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log_info "No IP change detected, but DNS inconsistencies found"
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if [[ "$external_needs_update" == "true" ]]; then
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update_external_dns
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fi
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if [[ "$internal_needs_update" == "true" ]]; then
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update_internal_dns
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fi
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else
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# IP changed - do full update
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log_info "Starting DDNS check/update process"
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# Check and update external DNS (Infomaniak)
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if ! check_external_dns; then
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update_external_dns
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fi
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# Check and update internal DNS (PowerDNS)
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if ! check_internal_dns; then
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update_internal_dns
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fi
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fi
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log_info "DDNS check/update completed"
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# Show recent IP history summary
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if [[ -f "$IP_HISTORY_FILE" ]]; then
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log_info "Recent changes (last 5):"
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tail -5 "$IP_HISTORY_FILE" | grep -E "(change:|created:|updated:)" || log_info "No recent changes"
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fi
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}
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# Run main function
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main
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