ASP.NET Web Api:如何使用URL参数传递访问令牌(oAuth 2.0)？

Question

您是否知道如何使用url参数中的默认asp.net web api 2 OAuth 2授权机制生成的access_token.目前,我可以通过发送带有Authorization标头的请求来成功授权,如下所示:

Accept: application/json
Content-Type: application/json
Authorization: Bearer pADKsjwMv927u...

我想要的是通过URL参数启用授权,如下所示:

https://www.domain.com/api/MyController?access_token=pADKsjwMv927u...

Answer 1

好吧 - 我同意标题是一个更好的选择 - 但当然有需要查询字符串的情况.OAuth2规范也定义了它.

无论如何 - 此功能内置于Katana OAuth2中间件中:

http://leastprivilege.com/2013/10/31/retrieving-bearer-tokens-from-alternative-locations-in-katanaowin/

public class QueryStringOAuthBearerProvider : OAuthBearerAuthenticationProvider
{
    readonly string _name;

    public QueryStringOAuthBearerProvider(string name)
    {
        _name = name;
    }

    public override Task RequestToken(OAuthRequestTokenContext context)
    {
        var value = context.Request.Query.Get(_name);

        if (!string.IsNullOrEmpty(value))
        {
            context.Token = value;
        }

        return Task.FromResult<object>(null);
    }
}

然后:

var options = new JwtBearerAuthenticationOptions
{
    AllowedAudiences = new[] { audience },
    IssuerSecurityTokenProviders = new[]
        {
            new SymmetricKeyIssuerSecurityTokenProvider(
                issuer,
                signingKey)
        },
    Provider = new QueryStringOAuthBearerProvider(“access_token”)
};

Answer 2

所以,转到Global.asax并添加此方法:

        void Application_BeginRequest(object sender, EventArgs e)
        {
            if (ReferenceEquals(null, HttpContext.Current.Request.Headers["Authorization"]))
            {
                var token = HttpContext.Current.Request.Params["access_token"];
                if (!String.IsNullOrEmpty(token))
                {
                    HttpContext.Current.Request.Headers.Add("Authorization", "Bearer " + token);
                }
            }
        }

更新: 查看@leastprivilege的答案.更好的解决方案.