标签:block err abs oauth threading datetime image opened logs
一、作为认证服务器,首先需要提供一个可以通过appid/appsecret来获取token这样的一个接口,于是便有了以下代码。
public class AuthController : ApiController
{
[HttpGet]
public HttpResponseMessage Token(string appid = "", string appsecret = "")
{
ApiResponseEntity rep;
var isv = AppManage.Instance.GetAppISV(appid, appsecret);
if (isv != null)
{
string token = TokenManage.Instance.CreateToken(appid);
rep = new ApiResponseEntity
{
Status = InterfaceStatus.Success,
BizData = new
{
AccessToken = token
}
};
}
else
{
rep = new ApiResponseEntity()
{
Status = InterfaceStatus.Parm_Missing,
Message = "param error"
};
}
return rep.ToHttpResponseMessage();
}
}
创建token的算法可以自行实现,我是将新生成的Guid做了一下md5处理,代码如下:
public string CreateToken(string appid)
{
string token = Guid.NewGuid().ToString().ToMd5();
Set(token, appid);
return token;
}
上文可以看到,在生成token了以后,就一个SetToken,就是将token存储在缓存里面,并设置了一定时间的生存周期,代码如下:
public void Set(string token, string appid)
{
var config = ServerConfigManage.Instance.GetServerConfig();
string key = string.Format(RedisCacheKey.App_Token, token);
RedisNetHelper.Set<string>(key, appid, DateTime.Now.AddSeconds(config.TokenSurvivalTime));
}
为什么要用token做key,是因为token的变更会导致isv token验证失效,但是用token做key就可以在存活周期内,这个key都可以使用,避免了多线程获取token,或是其他原因导致的token失效。作为认证服务器,还需要提供一个RefreshToken这样的接口,用来给刷新token的存活周期,代码相似这里就不再赘述。
二、在Api做验证的时候,就需要开始对Token进行验证了,代码如下:
public class OAuthHandler : DelegatingHandler
{
protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
{
ApiResponseEntity repEntity = null;
string appid = "";
string ip = RequestHelper.GetWebClientIp();
if (!OAuthValidate.IpValidate(ip))
{
repEntity = new ApiResponseEntity
{
Status = InterfaceStatus.IllegalIp,
Message = "ip access limit"
};
}
else
{
string token = "";
string url = request.RequestUri.AbsoluteUri;
var routeData = request.GetRouteData();
string controller = routeData.Values["controller"].ToString().ToLower();
string action = routeData.Values["action"].ToString().ToLower();
if (controller.Equals("auth") && action.Equals("token"))
{
return base.SendAsync(request, cancellationToken);
}
if (request.Method == HttpMethod.Get)
{
var query = request.RequestUri.ParseQueryString();
token = query["token"];
}
if (token == null || token.Length == 0)
{
repEntity = new ApiResponseEntity
{
Status = InterfaceStatus.Token_Faild,
Message = "token invalid"
};
}
else
{
appid = TokenManage.Instance.Get(token);
if (appid == null || appid.Length == 0)
{
repEntity = new ApiResponseEntity
{
Status = InterfaceStatus.Token_Faild,
Message = "token invalid"
};
}
else
{
if (!OAuthValidate.ApiValidate
(
string.Format("{0}/{1}", controller, action),
appid
))
{
repEntity = new ApiResponseEntity
{
Status = InterfaceStatus.No_Access,
Message = "api access limit"
};
}
}
}
}
if (repEntity != null)
{
var tsc = new TaskCompletionSource<HttpResponseMessage>();
tsc.SetResult(repEntity.ToHttpResponseMessage());
return tsc.Task;
}
else
{
return base.SendAsync(request, cancellationToken);
}
}
}
使用比较传统的方式,继承于DelegatingHandler,然后进行处理,首先是做的IP验证,然后再进行token有效期验证,最后再进行Api的权限调用验证。验证的代码如下:
public static bool IpValidate(string ip)
{
var config = ServerConfigManage.Instance.GetServerConfig();
bool isPass = true;
if (isPass && config.IsStartIpWhiteList)
{
isPass = config.IpWhiteList.Contains(ip);
}
if (isPass && config.IsStartIpBlackList)
{
isPass = !config.IpBlackList.Contains(ip);
}
return isPass;
}
public static bool ApiValidate(string api, string appid)
{
var config = ServerConfigManage.Instance.GetServerConfig();
if (config.IsStartApiControl)
{
var apis = AppManage.Instance.GetAppApiResource(appid);
return apis != null && apis.Contains(api);
}
return true;
}
GetServerConfig()是从DB/Cache里面获取服务器的自定义配置,然后看是否开启ip白名单/黑名单,下面的代码同理,是否开启权限验证。
那认证服务器到这里实际上就结束了,关于isv申请appid/appsecret。然后用户同意授权以后,存储appid和user之间的关联关系,就需要看客自行实现了。
另外有一个扩展代码这里也提一下,就是关于ApiResponseEntity的返回值处理,代码如下:
public static HttpResponseMessage ToHttpResponseMessage(this ResponseEntity rep, bool isEncrypt = false)
{
return new HttpResponseMessage(HttpStatusCode.OK)
{
Content = new StringContent
(
isEncrypt
? EncryptHelper.Base64Replace(EncryptHelper.AESEncryptBase64(JsonHelper.ToJson(rep), Config.ApiEncryptKey))
: JsonHelper.ToJson(rep),
System.Text.Encoding.UTF8,
"application/json"
)
};
}
标签:block err abs oauth threading datetime image opened logs
原文地址:http://www.cnblogs.com/zxh1919/p/7865909.html