mirror of
https://github.com/esiur/esiur-dotnet.git
synced 2025-10-30 23:51:34 +00:00
304 lines
10 KiB
C#
304 lines
10 KiB
C#
|
|
/*
|
|
|
|
Copyright (c) 2017 Ahmed Kh. Zamil
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in all
|
|
copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
SOFTWARE.
|
|
|
|
*/
|
|
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using Esiur.Misc;
|
|
using Esiur.Data;
|
|
using System.Net;
|
|
using System.Text.Json.Serialization;
|
|
|
|
namespace Esiur.Net.Packets.HTTP;
|
|
public class HTTPRequestPacket : Packet
|
|
{
|
|
|
|
|
|
public StringKeyList Query;
|
|
public HTTPMethod Method;
|
|
public StringKeyList Headers;
|
|
|
|
public bool WSMode;
|
|
|
|
public string Version;
|
|
public StringKeyList Cookies; // String
|
|
public string URL; /// With query
|
|
public string Filename; /// Without query
|
|
|
|
public KeyList<string, object> PostForms;
|
|
public byte[] Message;
|
|
|
|
|
|
private HTTPMethod GetMethod(string method)
|
|
{
|
|
switch (method.ToLower())
|
|
{
|
|
case "get":
|
|
return HTTPMethod.GET;
|
|
case "post":
|
|
return HTTPMethod.POST;
|
|
case "head":
|
|
return HTTPMethod.HEAD;
|
|
case "put":
|
|
return HTTPMethod.PUT;
|
|
case "delete":
|
|
return HTTPMethod.DELETE;
|
|
case "options":
|
|
return HTTPMethod.OPTIONS;
|
|
case "trace":
|
|
return HTTPMethod.TRACE;
|
|
case "connect":
|
|
return HTTPMethod.CONNECT;
|
|
default:
|
|
return HTTPMethod.UNKNOWN;
|
|
}
|
|
}
|
|
|
|
public override string ToString()
|
|
{
|
|
return "HTTPRequestPacket"
|
|
+ "\n\tVersion: " + Version
|
|
+ "\n\tMethod: " + Method
|
|
+ "\n\tURL: " + URL
|
|
+ "\n\tMessage: " + (Message != null ? Message.Length.ToString() : "NULL");
|
|
}
|
|
|
|
public override long Parse(byte[] data, uint offset, uint ends)
|
|
{
|
|
string[] sMethod = null;
|
|
string[] sLines = null;
|
|
|
|
uint headerSize = 0;
|
|
|
|
for (uint i = offset; i < ends - 3; i++)
|
|
{
|
|
if (data[i] == '\r' && data[i + 1] == '\n'
|
|
&& data[i + 2] == '\r' && data[i + 3] == '\n')
|
|
{
|
|
sLines = Encoding.ASCII.GetString(data, (int)offset, (int)(i - offset)).Split(new string[] { "\r\n" },
|
|
StringSplitOptions.None);
|
|
|
|
headerSize = i + 4;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (headerSize == 0)
|
|
return -1;
|
|
|
|
Cookies = new StringKeyList();
|
|
PostForms = new KeyList<string, object>();
|
|
Query = new StringKeyList();
|
|
Headers = new StringKeyList();
|
|
|
|
sMethod = sLines[0].Split(' ');
|
|
Method = GetMethod(sMethod[0].Trim());
|
|
|
|
if (sMethod.Length == 3)
|
|
{
|
|
sMethod[1] = WebUtility.UrlDecode(sMethod[1]);
|
|
if (sMethod[1].Length >= 7)
|
|
{
|
|
if (sMethod[1].StartsWith("http://"))
|
|
{
|
|
sMethod[1] = sMethod[1].Substring(sMethod[1].IndexOf("/", 7));
|
|
}
|
|
}
|
|
|
|
URL = sMethod[1].Trim();
|
|
|
|
if (URL.IndexOf("?", 0) != -1)
|
|
{
|
|
Filename = URL.Split(new char[] { '?' }, 2)[0];
|
|
}
|
|
else
|
|
{
|
|
Filename = URL;
|
|
}
|
|
|
|
if (Filename.IndexOf("%", 0) != -1)
|
|
{
|
|
Filename = WebUtility.UrlDecode(Filename);
|
|
}
|
|
|
|
Version = sMethod[2].Trim();
|
|
}
|
|
|
|
// Read all headers
|
|
|
|
for (int i = 1; i < sLines.Length; i++)
|
|
{
|
|
if (sLines[i] == string.Empty)
|
|
{
|
|
// Invalid header
|
|
return 0;
|
|
}
|
|
|
|
if (sLines[i].IndexOf(':') == -1)
|
|
{
|
|
// Invalid header
|
|
return 0;
|
|
}
|
|
|
|
string[] header = sLines[i].Split(new char[] { ':' }, 2);
|
|
|
|
header[0] = header[0].ToLower();
|
|
Headers[header[0]] = header[1].Trim();
|
|
|
|
if (header[0] == "cookie")
|
|
{
|
|
string[] cookies = header[1].Split(';');
|
|
|
|
foreach (string cookie in cookies)
|
|
{
|
|
if (cookie.IndexOf('=') != -1)
|
|
{
|
|
string[] splitCookie = cookie.Split('=');
|
|
splitCookie[0] = splitCookie[0].Trim();
|
|
splitCookie[1] = splitCookie[1].Trim();
|
|
if (!Cookies.ContainsKey(splitCookie[0].Trim()))
|
|
Cookies.Add(splitCookie[0], splitCookie[1]);
|
|
}
|
|
else
|
|
{
|
|
if (!Cookies.ContainsKey(cookie.Trim()))
|
|
{
|
|
Cookies.Add(cookie.Trim(), string.Empty);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Query String
|
|
if (URL.IndexOf("?", 0) != -1)
|
|
{
|
|
string[] SQ = URL.Split(new char[] { '?' }, 2)[1].Split('&');
|
|
foreach (string S in SQ)
|
|
{
|
|
if (S.IndexOf("=", 0) != -1)
|
|
{
|
|
string[] qp = S.Split(new char[] { '=' }, 2);
|
|
|
|
if (!Query.ContainsKey(WebUtility.UrlDecode(qp[0])))
|
|
{
|
|
Query.Add(WebUtility.UrlDecode(qp[0]), WebUtility.UrlDecode(qp[1]));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!Query.ContainsKey(WebUtility.UrlDecode(S)))
|
|
{
|
|
Query.Add(WebUtility.UrlDecode(S), null);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Post Content-Length
|
|
if (Method == HTTPMethod.POST)
|
|
{
|
|
try
|
|
{
|
|
|
|
uint postSize = uint.Parse(Headers["content-length"]);
|
|
|
|
// check limit
|
|
if (postSize > data.Length - headerSize)
|
|
return -(postSize - (data.Length - headerSize));
|
|
|
|
|
|
if (
|
|
Headers["content-type"] == null
|
|
|| Headers["content-type"] == ""
|
|
|| Headers["content-type"].StartsWith("application/x-www-form-urlencoded"))
|
|
{
|
|
string[] PostVars = null;
|
|
PostVars = Encoding.UTF8.GetString(data, (int)headerSize, (int)postSize).Split('&');
|
|
for (int J = 0; J < PostVars.Length; J++)
|
|
{
|
|
if (PostVars[J].IndexOf("=") != -1)
|
|
{
|
|
string key = WebUtility.HtmlDecode(
|
|
WebUtility.UrlDecode(PostVars[J].Split(new char[] { '=' }, 2)[0]));
|
|
if (PostForms.Contains(key))
|
|
PostForms[key] = WebUtility.HtmlDecode(
|
|
WebUtility.UrlDecode(PostVars[J].Split(new char[] { '=' }, 2)[1]));
|
|
else
|
|
PostForms.Add(key, WebUtility.HtmlDecode(
|
|
WebUtility.UrlDecode(PostVars[J].Split(new char[] { '=' }, 2)[1])));
|
|
}
|
|
else
|
|
if (PostForms.Contains("unknown"))
|
|
PostForms["unknown"] = PostForms["unknown"]
|
|
+ "&" + WebUtility.HtmlDecode(WebUtility.UrlDecode(PostVars[J]));
|
|
else
|
|
PostForms.Add("unknown", WebUtility.HtmlDecode(WebUtility.UrlDecode(PostVars[J])));
|
|
}
|
|
}
|
|
else if (Headers["content-type"].StartsWith("multipart/form-data"))
|
|
{
|
|
int st = 1;
|
|
int ed = 0;
|
|
string strBoundry = "--" + Headers["content-type"].Substring(
|
|
Headers["content-type"].IndexOf("boundary=", 0) + 9);
|
|
|
|
string[] sc = Encoding.UTF8.GetString(data, (int)headerSize, (int)postSize).Split(
|
|
new string[] { strBoundry }, StringSplitOptions.None);
|
|
|
|
|
|
for (int j = 1; j < sc.Length - 1; j++)
|
|
{
|
|
string[] ps = sc[j].Split(new string[] { "\r\n\r\n" }, 2, StringSplitOptions.None);
|
|
ps[1] = ps[1].Substring(0, ps[1].Length - 2); // remove the empty line
|
|
st = ps[0].IndexOf("name=", 0) + 6;
|
|
ed = ps[0].IndexOf("\"", st);
|
|
PostForms.Add(ps[0].Substring(st, ed - st), ps[1]);
|
|
}
|
|
}
|
|
//else if (Headers["content-type"] == "application/json")
|
|
//{
|
|
// var json = DC.Clip(data, headerSize, postSize);
|
|
//}
|
|
else
|
|
{
|
|
//PostForms.Add(Headers["content-type"], Encoding.Default.GetString( ));
|
|
Message = data.Clip(headerSize, postSize);
|
|
}
|
|
|
|
return headerSize + postSize;
|
|
|
|
}
|
|
catch
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return headerSize;
|
|
}
|
|
}
|