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[Modify] Add some checks for the Host header

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sta 2018-02-13 15:50:55 +09:00
parent 35e88eed3d
commit f775caf21b
1 changed files with 20 additions and 1 deletions
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21
websocket-sharp/Net/HttpListenerRequest.cs
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@ -75,6 +75,8 @@ namespace WebSocketSharp.Net
private Guid _requestTraceIdentifier; private Guid _requestTraceIdentifier;
private Uri _url; private Uri _url;
private Uri _urlReferrer; private Uri _urlReferrer;
private string _userHostName;
private bool _userHostNameSet;
private string[] _userLanguages; private string[] _userLanguages;
private bool _websocketRequest; private bool _websocketRequest;
private bool _websocketRequestSet; private bool _websocketRequestSet;
@ -541,7 +543,7 @@ namespace WebSocketSharp.Net
/// </value> /// </value>
public string UserHostName { public string UserHostName {
get { get {
return _headers["Host"]; return _userHostName;
} }
} }
@ -612,6 +614,23 @@ namespace WebSocketSharp.Net
_headers.InternalSet (name, val, false); _headers.InternalSet (name, val, false);
var lower = name.ToLower (CultureInfo.InvariantCulture); var lower = name.ToLower (CultureInfo.InvariantCulture);
if (lower == "host") {
if (_userHostNameSet) {
_context.ErrorMessage = "Invalid Host header";
return;
}
if (val.Length == 0) {
_context.ErrorMessage = "Invalid Host header";
return;
}
_userHostName = val;
_userHostNameSet = true;
return;
}
if (lower == "content-length") { if (lower == "content-length") {
if (_contentLengthSet) { if (_contentLengthSet) {
_context.ErrorMessage = "Invalid Content-Length header"; _context.ErrorMessage = "Invalid Content-Length header";