/// <summary>
/// 检验是否合法
/// </summary>
/// <returns></returns>
public bool CheckSign(string secretKey, char separator = ';')
{
var strTicketParas = GetSignContent(separator);
var signData = HMACSHA.EncryptBase64(strTicketParas.ToString(), secretKey);
return(Sign == signData);
}
/// <summary>
/// 生成签名后的字符串
/// </summary>
/// <returns></returns>
public string ToSignData(string secretKey, char separator = ';')
{
TimeSpan = DateTime.Now.ToUtcSeconds();
var encrpStr = GetSignContent(separator);
Sign = HMACSHA.EncryptBase64(encrpStr.ToString(), secretKey);
AddTicketProperty("sign", Sign, separator, encrpStr);
return(encrpStr.ToString());
}
private static string GeneratePostData(AliSmsConfig config, SortedDictionary <string, string> paras)
{
var content = string.Join("&",
paras.Select(k =>
string.Concat(SpecicalUrlEncode(k.Key), "=", SpecicalUrlEncode(k.Value))));
var preEncryStr = string.Concat("GET&", SpecicalUrlEncode("/"), "&", SpecicalUrlEncode(content));
var sign = HMACSHA.EncryptBase64(preEncryStr, string.Concat(config.AppSecret, "&"));
return(string.Concat("Signature=", SpecicalUrlEncode(sign), "&", content));
}
private string CompulteSign(string appId, string appVersion, string secretKey, string extSignData, char separator)
{
var signContent = GetContent(appId, appVersion, separator, true);
if (!string.IsNullOrEmpty(extSignData))
{
signContent.Append("&").Append(extSignData);
}
return(HMACSHA.EncryptBase64(signContent.ToString(), secretKey));
}
/// <summary>
/// 生成签名后的字符串
/// </summary>
/// <returns></returns>
public string ToTicket(string appSource, string appVersion, string secretKey, char separator = ';')
{
TimeSpan = DateTime.Now.ToUtcSeconds();
var encrpStr = GetSignContent(appSource, appVersion, separator, false);
Sign = HMACSHA.EncryptBase64(encrpStr.ToString(), secretKey);
var content = GetContent(appSource, appVersion, separator);
AddTicketProperty("sign", Sign, separator, content, true);
return(content.ToString());
}
private static string GetCallBack(string key)
{
var token = HMACSHA.EncryptBase64(key, OssTokenSecret);
var callBackStr = new StringBuilder();
callBackStr.Append("{\"callbackUrl\":").Append("\"").Append(_aliCallBackUrl).Append("?t=").Append(token.UrlEncode()).Append("\",");
//callBackStr.Append("\"callbackBodyType\":").Append("\"application/json\",");
//callBackStr.Append("\"callbackBody\":").Append("\"{\"mime_type\":${mimeType},\"size\":${size},\"object\":${object},\"bucket\":${bucket}}\"}");
callBackStr.Append("\"callbackBody\":").Append("bucket=${bucket}&object=${object}&size=${size}&mimeType=${mimeType}}");
return(callBackStr.ToString().ToBase64(Encoding.UTF8));
}
/// <summary>
/// 获取上传参数
/// </summary>
/// <param name="bucket_name"></param>
/// <param name="category"></param>
/// <param name="userId">用户id</param>
/// <returns></returns>
private static Resp <BucketUploadPara> GetUploadPara(string bucket_name, string category, string userId)
{
var osappInfo = AppReqContext.Identity;
var domain = GetDomainByBucket(bucket_name);
if (string.IsNullOrEmpty(domain))
{
return(new Resp <BucketUploadPara>().WithResp(RespTypes.NoPermission, "没有当前图片空间的上传权限"));
}
var patStr = new StringBuilder();
if (AppInfoHelper.IsDev)
{
patStr.Append("test/");
}
patStr.Append(osappInfo.tenant_id).Append("/")
.Append((int)osappInfo.app_type).Append("-").Append(userId).Append("/")
.Append(category).Append("/")
.Append(DateTime.Now.ToUtcMilliSeconds());
var key = patStr.ToString();
var expiration = DateTime.Now.AddMinutes(3);
//var callBack = GetCallBack(key);
var policyConds = new PolicyConditions();
policyConds.AddConditionItem("bucket", bucket_name);
policyConds.AddConditionItem(MatchMode.StartWith, PolicyConditions.CondKey, key);
//policyConds.AddConditionItem("callback", callBack);
var encPostPolicy = policyConds.GeneratePostPolicyJsonBase64(expiration);
var signature = HMACSHA.EncryptBase64(encPostPolicy, _aliConfig.AppSecret);
var bucketConfig = new BucketUploadPara();
bucketConfig.paras.Add("key", key);
bucketConfig.paras.Add("OSSAccessKeyId", _aliConfig.AppId);
bucketConfig.paras.Add("policy", encPostPolicy);
bucketConfig.paras.Add("signature", signature);
//bucketConfig.paras.Add("callback", callBack);
bucketConfig.upload_url = domain;
return(new Resp <BucketUploadPara>(bucketConfig));
}
/// <summary>
/// 格式化 上传文件实体
/// </summary>
/// <param name="mo"></param>
/// <param name="token"></param>
/// <param name="key"></param>
/// <returns></returns>
public static bool FormatUploadMo(UploadFileMo mo, string token, string key)
{
if (string.IsNullOrEmpty(token))
{
return(false);
}
var encryptKey = HMACSHA.EncryptBase64(key, OssTokenSecret);
if (token != encryptKey)
{
return(false);
}
var splitKey = key.Split('/');
var length = splitKey.Length;
if (length < 4)
{
return(false);
}
var splitUser = splitKey[length - 3].Split('-');
if (splitUser.Length < 2)
{
return(false);
}
mo.owner_tid = splitKey[length - 4];
//var appType = splitUser[0].ToInt32();
mo.owner_tid = mo.owner_tid;
mo.owner_uid = splitUser[1];
mo.url = string.Concat(GetDomainByBucket(mo.bucket), "/", key);
if (mo.mime_type.StartsWith("image"))
{
mo.type = UploadFileType.Image;
}
return(true);
}