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try to implement HTTP_BODY_MAXLENGTH. Make it limit body input bytes. Read entire relevant input buffer before UTF-8 parsing, or it may fail.

LSLKeyTest
UbitUmarov 2015-12-25 13:51:05 +00:00
parent e5f7856eaf
commit 41078f8d51
1 changed files with 33 additions and 16 deletions
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49
OpenSim/Region/CoreModules/Scripting/HttpRequest/ScriptsHttpRequests.cs
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@ -190,7 +190,15 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
case (int)HttpRequestConstants.HTTP_BODY_MAXLENGTH:
// TODO implement me
int len;
if(int.TryParse(parms[i + 1], out len))
{
if(len > HttpRequestClass.HttpBodyMaxLenMAX)
len = HttpRequestClass.HttpBodyMaxLenMAX;
else if(len < 64) //???
len = 64;
htc.HttpBodyMaxLen = len;
}
break;
case (int)HttpRequestConstants.HTTP_VERIFY_CERT:
@ -445,9 +453,11 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
{
get { return _finished; }
}
// public int HttpBodyMaxLen = 2048; // not implemented
public const int HttpBodyMaxLenMAX = 16384;
// Parameter members and default values
public int HttpBodyMaxLen = 2048;
public string HttpMethod = "GET";
public string HttpMIMEType = "text/plain;charset=utf-8";
public int HttpTimeout;
@ -523,7 +533,7 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
HttpWebResponse response = null;
Stream resStream = null;
StringBuilder sb = new StringBuilder();
byte[] buf = new byte[8192];
byte[] buf = new byte[HttpBodyMaxLenMAX + 16];
string tempString = null;
int count = 0;
@ -608,26 +618,32 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
Status = (int)response.StatusCode;
resStream = response.GetResponseStream();
int totalBodyBytes = 0;
int maxBytes = HttpBodyMaxLen;
if(maxBytes > buf.Length)
maxBytes = buf.Length;
// we need to read all allowed or UFT8 conversion may fail
do
{
// fill the buffer with data
count = resStream.Read(buf, 0, buf.Length);
// make sure we read some data
if (count != 0)
{
// translate from bytes to ASCII text
tempString = Util.UTF8.GetString(buf, 0, count);
// continue building the string
sb.Append(tempString);
if (sb.Length > 2048)
count = resStream.Read(buf, totalBodyBytes, maxBytes - totalBodyBytes);
totalBodyBytes += count;
if (totalBodyBytes >= maxBytes)
break;
}
} while (count > 0); // any more data to read?
ResponseBody = sb.ToString().Replace("\r", "");
if(totalBodyBytes > 0)
{
tempString = Util.UTF8.GetString(buf, 0, totalBodyBytes);
sb.Append(tempString);
sb.Replace("\r", "");
ResponseBody = sb.ToString();
sb.Clear();
}
else
ResponseBody = "";
}
catch (WebException e)
{
@ -671,6 +687,7 @@ namespace OpenSim.Region.CoreModules.Scripting.HttpRequest
if (response != null)
response.Close();
// We need to resubmit
if (
(Status == (int)HttpStatusCode.MovedPermanently