forked from rickparrish/RMLib
-
Notifications
You must be signed in to change notification settings - Fork 0
/
WebUtils.cs
371 lines (334 loc) · 13.5 KB
/
WebUtils.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
/*
RMLib: Nonvisual support classes used by multiple R&M Software programs
Copyright (C) 2008-2014 Rick Parrish, R&M Software
This file is part of RMLib.
RMLib is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
any later version.
RMLib is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with RMLib. If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Net;
using System.Net.Mail;
using System.Net.NetworkInformation;
using System.Net.Security;
using System.Net.Sockets;
using System.Security.Cryptography.X509Certificates;
using System.Threading;
using System.Web;
using System.Web.Configuration;
namespace RandM.RMLib
{
public enum GetExternalIPv4Methods
{
Http80 = 0,
Http81 = 1,
NatPmp = 2,
UnicastAddress = 3,
Upnp = 4
}
static public class WebUtils
{
public delegate void FTPProgressDelegate(string fileName, long lastBytesSent, long totalBytesSent, long fileSize);
public static void Email(string smtpHostname, int smtpPort, MailAddress fromAddress, MailAddress toAddress, MailAddress senderAddress, string subject, string body, bool isBodyHtml, string smtpUsername, RMSecureString smtpPassword, bool ssl)
{
MailMessage Msg = new MailMessage(fromAddress, toAddress);
Msg.Sender = senderAddress;
Msg.Subject = subject;
Msg.Body = body;
Msg.IsBodyHtml = isBodyHtml;
SmtpClient Smtp = new SmtpClient(smtpHostname);
if ((smtpUsername.Length > 0) && (smtpPassword.Length > 0))
{
Smtp.UseDefaultCredentials = false;
Smtp.Credentials = new NetworkCredential(smtpUsername, smtpPassword.GetPlainText());
}
Smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
Smtp.EnableSsl = ssl;
Smtp.Port = smtpPort;
Smtp.Timeout = 10000;
Smtp.Send(Msg);
}
static public bool FtpUpload(bool useSsl, string hostName, string userName, RMSecureString password, string remoteDirectory, string fileName, EventHandler<FtpUploadProgressEventArgs> progressEventHandler)
{
FtpWebRequest ftpRequest = null;
try
{
ftpRequest = (FtpWebRequest)WebRequest.Create("ftp://" + hostName + remoteDirectory + Path.GetFileName(fileName));
ftpRequest.Method = WebRequestMethods.Ftp.UploadFile;
ftpRequest.Proxy = null;
ftpRequest.UseBinary = true;
ftpRequest.UsePassive = true;
ftpRequest.Credentials = new NetworkCredential(userName, password.GetPlainText());
ftpRequest.KeepAlive = false;
//ftpRequest.EnableSsl = ASSL;
//if (ASSL) ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(FtpUploadCertificateValidation);
FileInfo FI = new FileInfo(fileName);
using (Stream Reader = FI.OpenRead())
{
using (Stream Writer = ftpRequest.GetRequestStream())
{
FtpUploadProgressEventArgs e = new FtpUploadProgressEventArgs(FI.Length);
byte[] Buffer = new byte[8192];
long TotalBytesRead = 0;
progressEventHandler(null, e);
int BytesRead = Reader.Read(Buffer, 0, Buffer.Length);
while (BytesRead > 0)
{
TotalBytesRead += BytesRead;
Writer.Write(Buffer, 0, BytesRead);
e.BytesSent = TotalBytesRead;
progressEventHandler(null, e);
BytesRead = Reader.Read(Buffer, 0, Buffer.Length);
}
}
}
ftpRequest.GetResponse().Close();
return true;
}
catch (Exception)
{
return false;
}
finally
{
ftpRequest = null;
}
}
static public bool FtpUploadCertificateValidation(Object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors errors)
{
return true;
}
static public IPAddress GetExternalIPv4(GetExternalIPv4Methods[] methodOrder)
{
IPAddress Result = IPAddress.None;
foreach (GetExternalIPv4Methods method in methodOrder)
{
try
{
switch (method)
{
case GetExternalIPv4Methods.Http80:
Result = GetExternalIPv4ByHttp(80);
break;
case GetExternalIPv4Methods.Http81:
Result = GetExternalIPv4ByHttp(81);
break;
case GetExternalIPv4Methods.NatPmp:
Result = GetExternalIPv4ByNatPmp();
break;
case GetExternalIPv4Methods.UnicastAddress:
Result = GetExternalIPv4ByUnicastAddress();
break;
case GetExternalIPv4Methods.Upnp:
Result = GetExternalIPv4ByUpnp();
break;
}
if (Result != IPAddress.None) break;
}
catch
{
// Ignore, move on to the next method type
}
}
return Result;
}
public static IPAddress GetExternalIPv4ByHttp(int port)
{
using (RMWebClient WC = new RMWebClient())
{
WC.Timeout = 5000;
string IP = WC.DownloadString("http://www.randm.ca:" + port.ToString() + "/whats-my-ip.php");
// Return if it's valid
IPAddress Result = IPAddress.None;
if (IPAddress.TryParse(IP, out Result) && !WebUtils.IsPrivateIP(Result)) return Result;
}
return IPAddress.None;
}
public static IPAddress GetExternalIPv4ByNatPmp()
{
return NATPMP.GetExternalIPv4();
}
public static IPAddress GetExternalIPv4ByUnicastAddress()
{
// Loop through each network interface in the system
foreach (NetworkInterface NI in NetworkInterface.GetAllNetworkInterfaces())
{
// Loop through each gateway address for the current network interface
IPInterfaceProperties IPIP = NI.GetIPProperties();
foreach (GatewayIPAddressInformation GIPAddress in IPIP.GatewayAddresses)
{
// Ensure gateway is IPv4, and not IPAddress.ANY or IPAddress.NONE
if ((GIPAddress.Address.AddressFamily == AddressFamily.InterNetwork) && (GIPAddress.Address.ToString() != IPAddress.Any.ToString()) && (GIPAddress.Address.ToString() != IPAddress.None.ToString()))
{
// Gateway is valid, so loop through each unicast address for the current network interface
foreach (UnicastIPAddressInformation UIPAddress in NI.GetIPProperties().UnicastAddresses)
{
// Ensure unicast address is IPv4, and not IPAddress.ANY or IPAddress.NONE
if ((UIPAddress.Address.AddressFamily == AddressFamily.InterNetwork) && (UIPAddress.Address.ToString() != IPAddress.Any.ToString()) && (UIPAddress.Address.ToString() != IPAddress.None.ToString()))
{
if (!IsPrivateIP(UIPAddress.Address)) return UIPAddress.Address;
}
}
break;
}
}
}
return IPAddress.None;
}
public static IPAddress GetExternalIPv4ByUpnp()
{
return UPnP.GetExternalIPv4();
}
static public string HttpGet(string url)
{
try
{
using (RMWebClient WC = new RMWebClient())
{
return WC.DownloadString(url);
}
}
catch (Exception)
{
return string.Empty;
}
}
static public string HttpPost(string url, NameValueCollection nameValues)
{
bool OldExpect100Continue = ServicePointManager.Expect100Continue;
ServicePointManager.Expect100Continue = false;
try
{
using (RMWebClient WC = new RMWebClient())
{
return RMEncoding.Ansi.GetString(WC.UploadValues(url, nameValues));
}
}
catch (Exception)
{
// TODO Consider not catching this
return string.Empty;
}
finally
{
ServicePointManager.Expect100Continue = OldExpect100Continue;
}
}
static public bool IsAdminUserHostAddress()
{
if (HttpContext.Current == null) return false;
List<string> Addresses = new List<string>();
// Check if we have the IP addresses cached
if (HttpContext.Current.Cache["IsAdminUserHostAddress"] == null)
{
// Nope, so perform the lookup
string AddressesFromAppSettings = WebConfigurationManager.AppSettings["IsAdminUserHostAddress"];
foreach (string Address in AddressesFromAppSettings.Split(','))
{
IPAddress[] AddressesFromLookup = Dns.GetHostAddresses(Address);
foreach (IPAddress IP in AddressesFromLookup)
{
Addresses.Add(IP.ToString());
}
}
// And add them to the cache
HttpContext.Current.Cache["IsAdminUserHostAddress"] = Addresses;
}
else
{
Addresses = (List<string>)HttpContext.Current.Cache["IsAdminUserHostAddress"];
}
foreach (string Address in Addresses)
{
if (Address == HttpContext.Current.Request.UserHostAddress) return true;
}
return false;
}
static public bool IsPrivateIP(IPAddress ipAddress)
{
if (ipAddress.AddressFamily == AddressFamily.InterNetwork)
{
// Check in order of what I expect is most common to least common
string[] Octets = ipAddress.ToString().Split(new char[] { '.' });
if (Octets[0] == "192" && Octets[1] == "168")
{
return true;
}
else if (Octets[0] == "169" && Octets[1] == "254")
{
return true;
}
else if (Octets[0] == "127")
{
return true;
}
else if (Octets[0] == "10")
{
return true;
}
else if (Octets[0] == "172" && int.Parse(Octets[1]) >= 16 && int.Parse(Octets[1]) <= 31)
{
return true;
}
else if (ipAddress.ToString() == IPAddress.Any.ToString())
{
return true;
}
else if (ipAddress.ToString() == IPAddress.None.ToString())
{
return true;
}
return false;
}
else if (ipAddress.AddressFamily == AddressFamily.InterNetworkV6)
{
throw new NotImplementedException("I dont speak IPv6 yet");
}
else
{
throw new ArgumentOutOfRangeException("ipAddress");
}
}
static public bool Ping(string hostName, int timeout)
{
try
{
using (Ping P = new Ping())
{
return (P.Send(hostName, timeout).Status == IPStatus.Success);
}
}
catch (Exception)
{
return false;
}
}
static public string UrlEncode(string url)
{
const string NO_ENCODE = "1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
string Result = "";
for (int i = 0; i < url.Length; i++)
{
if (NO_ENCODE.Contains(url[i].ToString()))
{
Result += url[i];
}
else
{
Result += "%" + ((byte)url[i]).ToString("X2");
}
}
return Result;
}
}
}