public TokenModel Login(string username, string password, [Service] PermissionRequirement requirement)
{
Console.WriteLine(username);
var isValidated = username == "gsw" && password == "111111";
if (!isValidated)
{
return(new TokenModel()
{
Result = false,
Message = "认证失败"
});
}
else
{
//如果是基于用户的授权策略，这里要添加用户;如果是基于角色的授权策略，这里要添加角色
var claims = new Claim[] {
new Claim(ClaimTypes.Name, username),
new Claim(ClaimTypes.Expiration, DateTime.Now.AddSeconds(200000).ToString())
};
var token = JwtToken.BuildJwtToken(claims, requirement);
return(new TokenModel()
{
Result = true,
Data = token.access_token
});
}
}
void AddAuth(IServiceCollection services)
{
//读取配置文件
var audienceConfig = Configuration.GetSection("Audience");
var symmetricKeyAsBase64 = audienceConfig["Secret"];
var keyByteArray = Encoding.ASCII.GetBytes(symmetricKeyAsBase64);
var signingKey = new SymmetricSecurityKey(keyByteArray);
var tokenValidationParameters = new TokenValidationParameters
{
ValidateIssuerSigningKey = true,
IssuerSigningKey = signingKey,
ValidateIssuer = true,
ValidIssuer = audienceConfig["Issuer"],
ValidateAudience = true,
ValidAudience = audienceConfig["Audience"],
ValidateLifetime = true,
ClockSkew = TimeSpan.Zero,
RequireExpirationTime = true,
};
var signingCredentials = new SigningCredentials(signingKey, SecurityAlgorithms.HmacSha256);
//如果第三个参数，是ClaimTypes.Role，上面集合的每个元素的Name为角色名称，如果ClaimTypes.Name，即上面集合的每个元素的Name为用户名
var permissionRequirement = new PermissionRequirement(
ClaimTypes.Role,
audienceConfig["Issuer"],
audienceConfig["Audience"],
signingCredentials,
expiration: TimeSpan.FromSeconds(1000000)//设置Token过期时间
);
services.AddAuthorization(options =>
{
options.AddPolicy("Permission", policy => policy.AddRequirements(permissionRequirement));
}).
AddAuthentication(options =>
{
options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
})
.AddJwtBearer(JwtBearerDefaults.AuthenticationScheme, o =>
{
//不使用https
o.RequireHttpsMetadata = false;
o.TokenValidationParameters = tokenValidationParameters;
});
//注入授权Handler
services.AddSingleton <IAuthorizationHandler, PermissionHandler>();
services.AddSingleton(permissionRequirement);
}
/// <summary>
/// 获取基于JWT的Token
/// </summary>
/// <param name="username"></param>
/// <returns></returns>
public static dynamic BuildJwtToken(Claim[] claims, PermissionRequirement permissionRequirement)
{
var now = DateTime.UtcNow;
var jwt = new JwtSecurityToken(
issuer: permissionRequirement.Issuer,
audience: permissionRequirement.Audience,
claims: claims,
notBefore: now,
expires: now.Add(permissionRequirement.Expiration),
signingCredentials: permissionRequirement.SigningCredentials
);
var encodedJwt = new JwtSecurityTokenHandler().WriteToken(jwt);
var response = new
{
Status = true,
access_token = encodedJwt,
expires_in = permissionRequirement.Expiration.TotalMilliseconds,
token_type = "Bearer"
};
return(response);
}
