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fb_login.ashx
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fb_login.ashx
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<%@ WebHandler Language="C#" Class="fb_login" %>
using System;
using System.Web;
using System.Net;
using System.IO;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Configuration;
using System.Linq;
using System.Web.SessionState;
public class fb_login : IHttpHandler ,IRequiresSessionState {
public void ProcessRequest (HttpContext context) {
string p_ACCOUNT = "";
string p_PASSWD = "";
string email = "";
string name="";
string login_type = context.Request.QueryString["login_type"] != null ? context.Request.QueryString["login_type"] : "";
string returnurl = context.Request.QueryString["page"] != null ? context.Request.QueryString["page"] : "";
string server_name = "https://" + HttpContext.Current.Request.Url.Host ;
if (login_type == "cookie")
{
email = context.Request.Cookies["u_fb_email"].Value;
name = context.Request.Cookies["u_fb_name"].Value;
p_ACCOUNT = "FB" + context.Request.Cookies["u_fb_id"].Value;
p_PASSWD = context.Request.Cookies["u_fb_id"].Value;
}
else
{
string FacebookAppId = "164103481107660"; // "365173480244176"; //正式環境
string FacebookAppSecret = "97d49edd9b6ec4169c2ae08acc0f46df"; //"6f59da0ffdb6c880a977b3c47945c7bc";
//string FacebookAppId = "1926056380816841"; // .inspire-love
//string FacebookAppSecret = "58783c19510ea7e1f278138633858ef4"; //.inspire-love
string code = context.Request.QueryString["code"];
returnurl = context.Request.QueryString["state"];
Uri targetUri = new Uri("https://graph.facebook.com/oauth/access_token?client_id=" + FacebookAppId + "&client_secret=" + FacebookAppSecret + "&redirect_uri=" + server_name + "/fb_login.ashx&code=" + code);
HttpWebRequest at = (HttpWebRequest)HttpWebRequest.Create(targetUri);
if (context.Request["error"] != null)
{
string m = "<script>alert('登入失敗');location.href='/';</script>";
context.Response.Write(m);
context.Response.End();
}
else
{
System.IO.StreamReader str = new System.IO.StreamReader(at.GetResponse().GetResponseStream());
// string token = str.ReadToEnd().ToString().Replace("access_token=", "");
string token = str.ReadToEnd().ToString();
string accessToken = "";
JObject obj_back = JsonConvert.DeserializeObject<JObject>(token);/*反序列化*/
accessToken = obj_back["access_token"].ToString();
// Exchange the code for an extended access token
Uri eatTargetUri = new Uri("https://graph.facebook.com/oauth/access_token?grant_type=fb_exchange_token&client_id=" + FacebookAppId + "&client_secret=" + FacebookAppSecret + "&fb_exchange_token=" + accessToken);
HttpWebRequest eat = (HttpWebRequest)HttpWebRequest.Create(eatTargetUri);
StreamReader eatStr = new StreamReader(eat.GetResponse().GetResponseStream());
string eatToken = eatStr.ReadToEnd().ToString().Replace("access_token=", "");
// Split the access token and expiration from the single string
string[] eatWords = eatToken.Split('&');
string extendedAccessToken = eatWords[0];
// Request the Facebook user information
Uri targetUserUri = new Uri("https://graph.facebook.com/me?fields=email,name,first_name,last_name&access_token=" + accessToken);
HttpWebRequest user = (HttpWebRequest)HttpWebRequest.Create(targetUserUri);
// Read the returned JSON object response
StreamReader userInfo = new StreamReader(user.GetResponse().GetResponseStream());
string jsonResponse = string.Empty;
jsonResponse = userInfo.ReadToEnd();
JObject fbuser = JsonConvert.DeserializeObject<JObject>(jsonResponse);
p_ACCOUNT = "FB" + fbuser["id"].ToString();
p_PASSWD = fbuser["id"].ToString();
//foreach (var a in fbuser)
//{
// context.Response.Write(a);
//}
email = (fbuser["email"] != null) ? fbuser["email"].ToString() : "";
string first_name = (fbuser["first_name"] != null) ? fbuser["first_name"].ToString() : "";
string last_name = (fbuser["last_name"] != null) ? fbuser["last_name"].ToString() : "";
name = last_name + first_name;
}
string msg = "<script>";
if (p_ACCOUNT != "")
{
MemberLib.Mmemberdata result = MemberLib.Member.Check_exist(p_ACCOUNT);
if (result.Memberid.ToString() == "0")
{
result = MemberLib.Member.Add(email, p_PASSWD, p_ACCOUNT,name);
}
context.Session["memberdata"] = result;
msg += "alert('登入成功');";
}
else
{
msg += "alert('<%=p_ACCOUNT%>');";
}
if (returnurl != "" && returnurl != "undefined" && returnurl != null)
{
returnurl = Base64Decode(returnurl);
if (returnurl.IndexOf("http") == -1)
{
if (returnurl.Substring(0, 1) == "/")
returnurl = server_name + returnurl;
else
returnurl = server_name + "/" + returnurl;
}
msg += "location.href='" + returnurl + "';</script>";
}
else
{
returnurl = "/";
}
msg += "location.href='" + returnurl + "';</script>";
msg += "</script>";
context.Response.Write(msg);
}
}
public static string Base64Encode(string plainText)
{
var plainTextBytes = System.Text.Encoding.UTF8.GetBytes(plainText);
return System.Convert.ToBase64String(plainTextBytes);
}
public static string Base64Decode(string base64EncodedData)
{
if ((base64EncodedData.Length * 6) % 8 == 0)
{
var base64EncodedBytes = System.Convert.FromBase64String(base64EncodedData);
return System.Text.Encoding.UTF8.GetString(base64EncodedBytes);
}
else
return base64EncodedData;
}
//public class Item
//{
// public string access_token = string.Empty;
// public string token_type = string.Empty;
// public string expires_in ="";
//}
public bool IsReusable {
get {
return false;
}
}
}