/// <summary>
/// 检查应用接入的数据完整性
/// 1）检查timestamp 与系统时间是否相差在合理时间内，如10分钟。
/// 2）将appSecret、timestamp、nonce三个参数进行字典序排序
/// 3）将三个参数字符串拼接成一个字符串进行SHA1加密
/// 4）加密后的字符串可与signature对比，若匹配则标识该次请求来源于某应用端，请求是合法的。
/// </summary>
/// <param name="signature">加密签名内容</param>
/// <param name="timestamp">时间戳</param>
/// <param name="nonce">随机字符串</param>
/// <param name="appid">应用接入Id</param>
/// <returns></returns>
public CheckResult ValidateSignature(string signature, string timestamp, string nonce, string appid)
{
CheckResult result = new CheckResult {
Errmsg = "数据完整性检查不通过"
};
#region 校验签名参数的来源是否正确
#region 加密后的字符串可与signature对比
string[] arrTmp = { appid, timestamp, nonce };
Array.Sort(arrTmp);
string tmpStr = string.Join("", arrTmp);
// tmpStr = EncryptHelper.HashString(tmpStr + ConstHelper.UnlockingKey, "MD5");
tmpStr = CommonContext.MD5Encrupt(tmpStr + ConstHelper.UnlockingKey).ToLower();
#endregion
if (tmpStr == signature && ValidateUtil.IsNumber(timestamp))
{
DateTime dtTime = DateTimeHelper.StampToDateTime(timestamp);
double minutes = DateTime.Now.Subtract(dtTime).TotalMinutes;
if (minutes > _timspanExpiredMinutes)
{
result.Errmsg = "签名时间戳失效";
result.Success = false;
}
else
{
result.Errmsg = "检验成功";
result.Success = true;
}
#endregion
}
return(result);
}
// Upload file with device_tokens to Umeng
public string UploadContents(string contents)
{
if (RootJson.Properties().All(p => p.Name != "appkey") || RootJson.Properties().All(p => p.Name != "timestamp"))
{
throw new Exception("appkey, timestamp needs to be set.");
}
// Construct the json string
JObject uploadJson = new JObject
{
{ "appkey", RootJson.GetValue("appkey") },
{ "timestamp", RootJson.GetValue("timestamp") },
{ "content", contents }
};
// Construct the request
string url = Host + UploadPath;
string postBody = uploadJson.ToString();
string sign = CommonContext.MD5Encrupt("POST" + url + postBody + AppMasterSecret).ToLower();
url = url + "?sign=" + sign;
var request = (HttpWebRequest)WebRequest.Create(url);
request.Method = "POST";
request.UserAgent = UserAgent;
request.Timeout = 2 * 60 * 1000; //超时时间设置为两分钟
//request.ContentType = "application/json";
//request.Headers.Set("Pragma", "no-cache");
byte[] postData = Encoding.UTF8.GetBytes(postBody);
string retString;
using (var requestStream = request.GetRequestStream())
{
requestStream.Write(postData, 0, postData.Length);
using (var response = request.GetResponse())
{
using (var responseStream = response.GetResponseStream())
{
using (StreamReader myStreamReader = new StreamReader(responseStream, Encoding.GetEncoding("utf-8")))
{
retString = myStreamReader.ReadToEnd();
//ret = responseStream.ReadBytes();
}
}
}
}
try
{
JObject jObject = JObject.Parse(retString);
string result = jObject.Property("ret").Value.ToString();
if (result.Equals("SUCCESS", StringComparison.OrdinalIgnoreCase))
{
string fileId = jObject.GetValue("data").ToObject <JObject>().GetValue("file_id").ToString();
SetPredefinedKeyValue("file_id", fileId);
return(fileId);
}
else
{
LogHelper.WriteLog("调用友盟发送失败");
LogHelper.WriteLog(retString);
throw new Exception("Failed to upload file");
}
}
catch (Exception ex)
{
LogHelper.WriteLog(ex.ToString());
throw ex;
}
}