如何設置Cloudflare動態DNS

#需要 -版本 7.1

[cmdletbinding()]
param (
    [parameter(Mandatory)]
    $Email,
    [parameter(Mandatory)]
    $Token,
    [parameter(Mandatory)]
    $Domain,
    [parameter(Mandatory)]
    $Record
)

# 建立一次請求標頭。這些標頭將在整個腳本中使用。
$headers = @{
    "X-Auth-Email"  = $($Email)
    "Authorization" = "Bearer $($Token)"
    "Content-Type"  = "application/json"
}

#區域 Token 測試
## 這個區塊驗證你的 API 金鑰是否有效。
## 如果無效，腳本將終止。

$uri = "https://api.cloudflare.com/client/v4/user/tokens/verify"

$auth_result = Invoke-RestMethod -Method GET -Uri $uri -Headers $headers -SkipHttpErrorCheck
if (-not($auth_result.result)) {
    Write-Output "API token validation failed. Error: $($auth_result.errors.message). Terminating script."
    # 結束腳本
    return
}
Write-Output "API token validation [$($Token)] success. $($auth_result.messages.message)."
#結束區域

#區域取得區域識別碼
## 根據區域名稱取得網域的識別碼。如果找不到識別碼，腳本將終止。
$uri = "https://api.cloudflare.com/client/v4/zones?name=$($Domain)"
$DnsZone = Invoke-RestMethod -Method GET -Uri $uri -Headers $headers -SkipHttpErrorCheck
if (-not($DnsZone.result)) {
    Write-Output "Search for the DNS domain [$($Domain)] return zero results. Terminating script."
    # 結束腳本
    return
}
## 儲存 DNS 區域識別碼
$zone_id = $DnsZone.result.id
Write-Output "Domain zone [$($Domain)]: ID=$($zone_id)"
#結束區域

#區域取得 DNS 記錄
## 從 Cloudflare 取得現有 DNS 記錄的詳細資訊。
$uri = "https://api.cloudflare.com/client/v4/zones/$($zone_id)/dns_records?name=$($Record)"
$DnsRecord = Invoke-RestMethod -Method GET -Uri $uri -Headers $headers -SkipHttpErrorCheck
if (-not($DnsRecord.result)) {
    Write-Output "Search for the DNS record [$($Record)] return zero results. Terminating script."
    # 結束腳本
    return
}
## 儲存 DNS 記錄中的現有 IP 位址
$old_ip = $DnsRecord.result.content
## 儲存 DNS 記錄類型值
$record_type = $DnsRecord.result.type
## 儲存 DNS 記錄識別碼值
$record_id = $DnsRecord.result.id
## 儲存 DNS 記錄 TTL 值
$record_ttl = $DnsRecord.result.ttl
## 儲存 DNS 記錄代理值
$record_proxied = $DnsRecord.result.proxied
Write-Output "DNS record [$($Record)]: Type=$($record_type), IP=$($old_ip)"
#結束區域

#區域取得當前公共 IP 位址
$new_ip = Invoke-RestMethod -Uri 'https://v4.ident.me'
Write-Output "Public IP Address: OLD=$($old_ip), NEW=$($new_ip)"
#結束區域

#區域更新動態 DNS 記錄
## 比較當前 IP 位址與 DNS 記錄
## 如果當前 IP 位址與 DNS 記錄 IP 位址不匹配，則更新 DNS 記錄。
if ($new_ip -ne $old_ip) {
    Write-Output "The current IP address does not match the DNS record IP address. Attempt to update."
    ## 使用新的 IP 位址更新 DNS 記錄
    $uri = "https://api.cloudflare.com/client/v4/zones/$($zone_id)/dns_records/$($record_id)"
    $body = @{
        type    = $record_type
        name    = $Record
        content = $new_ip
        ttl     = $record_ttl
        proxied = $record_proxied
    } | ConvertTo-Json

    $Update = Invoke-RestMethod -Method PUT -Uri $uri -Headers $headers -SkipHttpErrorCheck -Body $body
    if (($Update.errors)) {
        Write-Output "DNS record update failed. Error: $($Update[0].errors.message)"
        ## 結束腳本
        return
    }

    Write-Output "DNS record update successful."
    return ($Update.result)
}
else {
    Write-Output "The current IP address and DNS record IP address are the same. There's no need to update."
}
#結束區域

Resolve-DnsName -Name demo.lazyexchangeadmin.cyou

C:\CloudflareDDNS\Update-CloudflareDDNS.ps1 `
-Email '[email protected]' `
-Token 'kGW8n........eJl5a' `
-Domain 'lazyexchangeadmin.cyou' `
-Record 'demo.lazyexchangeadmin.cyou'

Resolve-DnsName -Name demo.lazyexchangeadmin.cyou

# 定義預定任務動作屬性
## 輸入 PowerShell 腳本路徑
$scriptPath = 'C:\CloudflareDDNS\Update-CloudflareDDNS.ps1'
## Cloudflare 帳戶的電子郵件地址
$Email = '[email protected]'
## Cloudflare API 令牌
$Token = 'kGW8n........eJl5a'
## DNS 域名
$Domain = 'lazyexchangeadmin.cyou'
## 要更新的 DNS 記錄
$Record = 'demo.lazyexchangeadmin.cyou'

# 創建預定任務動作對象
$taskAction = New-ScheduledTaskAction `
    -Execute "pwsh.exe" `
    -Argument "-File $scriptPath -Email $Email -Token $Token -Domain $Domain -Record $Record"

# 創建新的預定任務觸發器計劃
## 觸發器 = 每 5 分鐘，持續 10 年。
$taskTrigger = New-ScheduledTaskTrigger `
-Once `
-At (Get-Date -Minute 0 -Second 0) `
-RepetitionInterval (New-TimeSpan -Minutes 5) `
-RepetitionDuration (New-TimeSpan -Days 3650)

# 在系統中註冊定期任務。
## 定期任務名稱
$TaskName = 'Update Cloudflare Dynamic DNS'
## 定期任務描述
$Description = 'Update Cloudflare DDNS Entry every 5 minutes'
## 創建定期任務
Register-ScheduledTask `
-TaskName $TaskName `
-Description $Description `
-Action $taskAction `
-Trigger $taskTrigger `
-User 'NT AUTHORITY\SYSTEM'