iap

iap 是一个 Rust 库，用于验证通过 Google Play 商店或 Apple App 商店进行的购买收据信息。

当前功能

• 验证从 Unity 的 IAP 插件 收到的收据数据，以验证订阅是否有效且未过期
• 辅助函数，用于从 Google/Apple 接收响应数据，以便进行更细粒度的错误处理或验证

支持的交易类型

• 订阅
• 消耗品

即将推出的功能

• 非订阅购买类型
• 手动输入用于验证的数据，这些数据未通过 Unity IAP 接收

用法

用于简单验证 Unity IAP 收据

您可以通过创建一个 UnityPurchaseValidator 来接收一个 PurchaseResponse，该响应将简单地告诉您购买是否有效（如果是订阅，则不会过期）。

use iap::*;

const APPLE_SECRET: &str = "<APPLE SECRET>";
const GOOGLE_KEY: &str = "<GOOGLE KEY JSON>";

#[tokio::main]
pub async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let validator = UnityPurchaseValidator::default()
        .set_apple_secret(APPLE_SECRET.to_string())
        .set_google_service_account_key(GOOGLE_KEY.to_string())?;

    // RECEIPT_INPUT would be the Json string containing the store, transaction id, and payload
    // from Unity IAP. ie:
    // "{ \"Store\": \"GooglePlay\", \"TransactionID\": \"<Txn ID>\", \"Payload\": \"<Payload>\" }"
    let unity_receipt = UnityPurchaseReceipt::from(&std::env::var("RECEIPT_INPUT")?)?;

    let response = validator.validate(&unity_receipt).await?;

    println!("PurchaseResponse is valid: {}", response.valid);

    Ok(())
}

如果您想要更细粒度的控制并访问商店端点的响应，我们提供了相应的辅助函数。

针对 Play 商店

pub async fn validate(receipt: &UnityPurchaseReceipt) -> error::Result<PurchaseResponse> {
    let response = fetch_google_receipt_data(receipt, "<GOOGLE_KEY>").await?;

    // debug or validate on your own with the data in the response
    println!("Expiry data: {}", response.expiry_time);

    // or just simply validate the response
    validate_google_subscription(&response)
}

针对 App 商店

pub async fn validate(receipt: &UnityPurchaseReceipt) -> error::Result<PurchaseResponse> {
    let response = fetch_apple_receipt_data(receipt, "<APPLE_SECRET>").await?;

    // was this purchase made in the production or sandbox environment
    println!("Environment: {}", response.environment.clone().unwrap());

    Ok(validate_apple_subscription(&response))
}