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jellyfin-server/MediaBrowser.Server.Implementations/HttpServer/SocketSharp/RequestMono.cs

919 lines
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C#
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consolidate web socket onto one port
2014-07-19 01:28:40 +00:00
using System;
using System.Collections.Specialized;
using System.Globalization;
using System.IO;
using System.Text;
using System.Web;
using ServiceStack.Web;
namespace MediaBrowser.Server.Implementations.HttpServer.SocketSharp
{
public partial class WebSocketSharpRequest : IHttpRequest
{
static internal string GetParameter(string header, string attr)
{
int ap = header.IndexOf(attr);
if (ap == -1)
return null;
ap += attr.Length;
if (ap >= header.Length)
return null;
char ending = header[ap];
if (ending != '"')
ending = ' ';
int end = header.IndexOf(ending, ap + 1);
if (end == -1)
return (ending == '"') ? null : header.Substring(ap);
return header.Substring(ap + 1, end - ap - 1);
}
void LoadMultiPart()
{
string boundary = GetParameter(ContentType, "; boundary=");
if (boundary == null)
return;
var input = GetSubStream(InputStream);
//DB: 30/01/11 - Hack to get around non-seekable stream and received HTTP request
//Not ending with \r\n?
var ms = new MemoryStream(32 * 1024);
input.CopyTo(ms);
input = ms;
ms.WriteByte((byte)'\r');
ms.WriteByte((byte)'\n');
input.Position = 0;
//Uncomment to debug
//var content = new StreamReader(ms).ReadToEnd();
//Console.WriteLine(boundary + "::" + content);
//input.Position = 0;
var multi_part = new HttpMultipart(input, boundary, ContentEncoding);
HttpMultipart.Element e;
while ((e = multi_part.ReadNextElement()) != null)
{
if (e.Filename == null)
{
byte[] copy = new byte[e.Length];
input.Position = e.Start;
input.Read(copy, 0, (int)e.Length);
form.Add(e.Name, (e.Encoding ?? ContentEncoding).GetString(copy));
}
else
{
//
// We use a substream, as in 2.x we will support large uploads streamed to disk,
//
HttpPostedFile sub = new HttpPostedFile(e.Filename, e.ContentType, input, e.Start, e.Length);
files.AddFile(e.Name, sub);
}
}
EndSubStream(input);
}
public NameValueCollection Form
{
get
{
if (form == null)
{
form = new WebROCollection();
files = new HttpFileCollection();
if (IsContentType("multipart/form-data", true))
LoadMultiPart();
else if (
IsContentType("application/x-www-form-urlencoded", true))
LoadWwwForm();
form.Protect();
}
#if NET_4_0
if (validateRequestNewMode && !checked_form) {
// Setting this before calling the validator prevents
// possible endless recursion
checked_form = true;
ValidateNameValueCollection ("Form", query_string_nvc, RequestValidationSource.Form);
} else
#endif
if (validate_form && !checked_form)
{
checked_form = true;
ValidateNameValueCollection("Form", form);
}
return form;
}
}
protected bool validate_cookies, validate_query_string, validate_form;
protected bool checked_cookies, checked_query_string, checked_form;
static void ThrowValidationException(string name, string key, string value)
{
string v = "\"" + value + "\"";
if (v.Length > 20)
v = v.Substring(0, 16) + "...\"";
string msg = String.Format("A potentially dangerous Request.{0} value was " +
"detected from the client ({1}={2}).", name, key, v);
throw new HttpRequestValidationException(msg);
}
static void ValidateNameValueCollection(string name, NameValueCollection coll)
{
if (coll == null)
return;
foreach (string key in coll.Keys)
{
string val = coll[key];
if (val != null && val.Length > 0 && IsInvalidString(val))
ThrowValidationException(name, key, val);
}
}
internal static bool IsInvalidString(string val)
{
int validationFailureIndex;
return IsInvalidString(val, out validationFailureIndex);
}
internal static bool IsInvalidString(string val, out int validationFailureIndex)
{
validationFailureIndex = 0;
int len = val.Length;
if (len < 2)
return false;
char current = val[0];
for (int idx = 1; idx < len; idx++)
{
char next = val[idx];
// See http://secunia.com/advisories/14325
if (current == '<' || current == '\xff1c')
{
if (next == '!' || next < ' '
|| (next >= 'a' && next <= 'z')
|| (next >= 'A' && next <= 'Z'))
{
validationFailureIndex = idx - 1;
return true;
}
}
else if (current == '&' && next == '#')
{
validationFailureIndex = idx - 1;
return true;
}
current = next;
}
return false;
}
public void ValidateInput()
{
validate_cookies = true;
validate_query_string = true;
validate_form = true;
}
bool IsContentType(string ct, bool starts_with)
{
if (ct == null || ContentType == null) return false;
if (starts_with)
return StrUtils.StartsWith(ContentType, ct, true);
return String.Compare(ContentType, ct, true, Helpers.InvariantCulture) == 0;
}
void LoadWwwForm()
{
using (Stream input = GetSubStream(InputStream))
{
using (StreamReader s = new StreamReader(input, ContentEncoding))
{
StringBuilder key = new StringBuilder();
StringBuilder value = new StringBuilder();
int c;
while ((c = s.Read()) != -1)
{
if (c == '=')
{
value.Length = 0;
while ((c = s.Read()) != -1)
{
if (c == '&')
{
AddRawKeyValue(key, value);
break;
}
else
value.Append((char)c);
}
if (c == -1)
{
AddRawKeyValue(key, value);
return;
}
}
else if (c == '&')
AddRawKeyValue(key, value);
else
key.Append((char)c);
}
if (c == -1)
AddRawKeyValue(key, value);
EndSubStream(input);
}
}
}
void AddRawKeyValue(StringBuilder key, StringBuilder value)
{
string decodedKey = HttpUtility.UrlDecode(key.ToString(), ContentEncoding);
form.Add(decodedKey,
HttpUtility.UrlDecode(value.ToString(), ContentEncoding));
key.Length = 0;
value.Length = 0;
}
WebROCollection form;
HttpFileCollection files;
public sealed class HttpFileCollection : NameObjectCollectionBase
{
internal HttpFileCollection()
{
}
internal void AddFile(string name, HttpPostedFile file)
{
BaseAdd(name, file);
}
public void CopyTo(Array dest, int index)
{
/* XXX this is kind of gross and inefficient
* since it makes a copy of the superclass's
* list */
object[] values = BaseGetAllValues();
values.CopyTo(dest, index);
}
public string GetKey(int index)
{
return BaseGetKey(index);
}
public HttpPostedFile Get(int index)
{
return (HttpPostedFile)BaseGet(index);
}
public HttpPostedFile Get(string key)
{
return (HttpPostedFile)BaseGet(key);
}
public HttpPostedFile this[string key]
{
get
{
return Get(key);
}
}
public HttpPostedFile this[int index]
{
get
{
return Get(index);
}
}
public string[] AllKeys
{
get
{
return BaseGetAllKeys();
}
}
}
class WebROCollection : NameValueCollection
{
bool got_id;
int id;
public bool GotID
{
get { return got_id; }
}
public int ID
{
get { return id; }
set
{
got_id = true;
id = value;
}
}
public void Protect()
{
IsReadOnly = true;
}
public void Unprotect()
{
IsReadOnly = false;
}
public override string ToString()
{
StringBuilder result = new StringBuilder();
foreach (string key in AllKeys)
{
if (result.Length > 0)
result.Append('&');
if (key != null && key.Length > 0)
{
result.Append(key);
result.Append('=');
}
result.Append(Get(key));
}
return result.ToString();
}
}
public sealed class HttpPostedFile
{
string name;
string content_type;
Stream stream;
class ReadSubStream : Stream
{
Stream s;
long offset;
long end;
long position;
public ReadSubStream(Stream s, long offset, long length)
{
this.s = s;
this.offset = offset;
this.end = offset + length;
position = offset;
}
public override void Flush()
{
}
public override int Read(byte[] buffer, int dest_offset, int count)
{
if (buffer == null)
throw new ArgumentNullException("buffer");
if (dest_offset < 0)
throw new ArgumentOutOfRangeException("dest_offset", "< 0");
if (count < 0)
throw new ArgumentOutOfRangeException("count", "< 0");
int len = buffer.Length;
if (dest_offset > len)
throw new ArgumentException("destination offset is beyond array size");
// reordered to avoid possible integer overflow
if (dest_offset > len - count)
throw new ArgumentException("Reading would overrun buffer");
if (count > end - position)
count = (int)(end - position);
if (count <= 0)
return 0;
s.Position = position;
int result = s.Read(buffer, dest_offset, count);
if (result > 0)
position += result;
else
position = end;
return result;
}
public override int ReadByte()
{
if (position >= end)
return -1;
s.Position = position;
int result = s.ReadByte();
if (result < 0)
position = end;
else
position++;
return result;
}
public override long Seek(long d, SeekOrigin origin)
{
long real;
switch (origin)
{
case SeekOrigin.Begin:
real = offset + d;
break;
case SeekOrigin.End:
real = end + d;
break;
case SeekOrigin.Current:
real = position + d;
break;
default:
throw new ArgumentException();
}
long virt = real - offset;
if (virt < 0 || virt > Length)
throw new ArgumentException();
position = s.Seek(real, SeekOrigin.Begin);
return position;
}
public override void SetLength(long value)
{
throw new NotSupportedException();
}
public override void Write(byte[] buffer, int offset, int count)
{
throw new NotSupportedException();
}
public override bool CanRead
{
get { return true; }
}
public override bool CanSeek
{
get { return true; }
}
public override bool CanWrite
{
get { return false; }
}
public override long Length
{
get { return end - offset; }
}
public override long Position
{
get
{
return position - offset;
}
set
{
if (value > Length)
throw new ArgumentOutOfRangeException();
position = Seek(value, SeekOrigin.Begin);
}
}
}
internal HttpPostedFile(string name, string content_type, Stream base_stream, long offset, long length)
{
this.name = name;
this.content_type = content_type;
this.stream = new ReadSubStream(base_stream, offset, length);
}
public string ContentType
{
get
{
return (content_type);
}
}
public int ContentLength
{
get
{
return (int)stream.Length;
}
}
public string FileName
{
get
{
return (name);
}
}
public Stream InputStream
{
get
{
return (stream);
}
}
public void SaveAs(string filename)
{
byte[] buffer = new byte[16 * 1024];
long old_post = stream.Position;
try
{
File.Delete(filename);
using (FileStream fs = File.Create(filename))
{
stream.Position = 0;
int n;
while ((n = stream.Read(buffer, 0, 16 * 1024)) != 0)
{
fs.Write(buffer, 0, n);
}
}
}
finally
{
stream.Position = old_post;
}
}
}
class Helpers
{
public static readonly CultureInfo InvariantCulture = CultureInfo.InvariantCulture;
}
internal sealed class StrUtils
{
StrUtils() { }
public static bool StartsWith(string str1, string str2)
{
return StartsWith(str1, str2, false);
}
public static bool StartsWith(string str1, string str2, bool ignore_case)
{
int l2 = str2.Length;
if (l2 == 0)
return true;
int l1 = str1.Length;
if (l2 > l1)
return false;
return (0 == String.Compare(str1, 0, str2, 0, l2, ignore_case, Helpers.InvariantCulture));
}
public static bool EndsWith(string str1, string str2)
{
return EndsWith(str1, str2, false);
}
public static bool EndsWith(string str1, string str2, bool ignore_case)
{
int l2 = str2.Length;
if (l2 == 0)
return true;
int l1 = str1.Length;
if (l2 > l1)
return false;
return (0 == String.Compare(str1, l1 - l2, str2, 0, l2, ignore_case, Helpers.InvariantCulture));
}
}
class HttpMultipart
{
public class Element
{
public string ContentType;
public string Name;
public string Filename;
public Encoding Encoding;
public long Start;
public long Length;
public override string ToString()
{
return "ContentType " + ContentType + ", Name " + Name + ", Filename " + Filename + ", Start " +
Start.ToString() + ", Length " + Length.ToString();
}
}
Stream data;
string boundary;
byte[] boundary_bytes;
byte[] buffer;
bool at_eof;
Encoding encoding;
StringBuilder sb;
const byte HYPHEN = (byte)'-', LF = (byte)'\n', CR = (byte)'\r';
// See RFC 2046
// In the case of multipart entities, in which one or more different
// sets of data are combined in a single body, a "multipart" media type
// field must appear in the entity's header. The body must then contain
// one or more body parts, each preceded by a boundary delimiter line,
// and the last one followed by a closing boundary delimiter line.
// After its boundary delimiter line, each body part then consists of a
// header area, a blank line, and a body area. Thus a body part is
// similar to an RFC 822 message in syntax, but different in meaning.
public HttpMultipart(Stream data, string b, Encoding encoding)
{
this.data = data;
//DB: 30/01/11: cannot set or read the Position in HttpListener in Win.NET
//var ms = new MemoryStream(32 * 1024);
//data.CopyTo(ms);
//this.data = ms;
boundary = b;
boundary_bytes = encoding.GetBytes(b);
buffer = new byte[boundary_bytes.Length + 2]; // CRLF or '--'
this.encoding = encoding;
sb = new StringBuilder();
}
string ReadLine()
{
// CRLF or LF are ok as line endings.
bool got_cr = false;
int b = 0;
sb.Length = 0;
while (true)
{
b = data.ReadByte();
if (b == -1)
{
return null;
}
if (b == LF)
{
break;
}
got_cr = (b == CR);
sb.Append((char)b);
}
if (got_cr)
sb.Length--;
return sb.ToString();
}
static string GetContentDispositionAttribute(string l, string name)
{
int idx = l.IndexOf(name + "=\"");
if (idx < 0)
return null;
int begin = idx + name.Length + "=\"".Length;
int end = l.IndexOf('"', begin);
if (end < 0)
return null;
if (begin == end)
return "";
return l.Substring(begin, end - begin);
}
string GetContentDispositionAttributeWithEncoding(string l, string name)
{
int idx = l.IndexOf(name + "=\"");
if (idx < 0)
return null;
int begin = idx + name.Length + "=\"".Length;
int end = l.IndexOf('"', begin);
if (end < 0)
return null;
if (begin == end)
return "";
string temp = l.Substring(begin, end - begin);
byte[] source = new byte[temp.Length];
for (int i = temp.Length - 1; i >= 0; i--)
source[i] = (byte)temp[i];
return encoding.GetString(source);
}
bool ReadBoundary()
{
try
{
string line = ReadLine();
while (line == "")
line = ReadLine();
if (line[0] != '-' || line[1] != '-')
return false;
if (!StrUtils.EndsWith(line, boundary, false))
return true;
}
catch
{
}
return false;
}
string ReadHeaders()
{
string s = ReadLine();
if (s == "")
return null;
return s;
}
bool CompareBytes(byte[] orig, byte[] other)
{
for (int i = orig.Length - 1; i >= 0; i--)
if (orig[i] != other[i])
return false;
return true;
}
long MoveToNextBoundary()
{
long retval = 0;
bool got_cr = false;
int state = 0;
int c = data.ReadByte();
while (true)
{
if (c == -1)
return -1;
if (state == 0 && c == LF)
{
retval = data.Position - 1;
if (got_cr)
retval--;
state = 1;
c = data.ReadByte();
}
else if (state == 0)
{
got_cr = (c == CR);
c = data.ReadByte();
}
else if (state == 1 && c == '-')
{
c = data.ReadByte();
if (c == -1)
return -1;
if (c != '-')
{
state = 0;
got_cr = false;
continue; // no ReadByte() here
}
int nread = data.Read(buffer, 0, buffer.Length);
int bl = buffer.Length;
if (nread != bl)
return -1;
if (!CompareBytes(boundary_bytes, buffer))
{
state = 0;
data.Position = retval + 2;
if (got_cr)
{
data.Position++;
got_cr = false;
}
c = data.ReadByte();
continue;
}
if (buffer[bl - 2] == '-' && buffer[bl - 1] == '-')
{
at_eof = true;
}
else if (buffer[bl - 2] != CR || buffer[bl - 1] != LF)
{
state = 0;
data.Position = retval + 2;
if (got_cr)
{
data.Position++;
got_cr = false;
}
c = data.ReadByte();
continue;
}
data.Position = retval + 2;
if (got_cr)
data.Position++;
break;
}
else
{
// state == 1
state = 0; // no ReadByte() here
}
}
return retval;
}
public Element ReadNextElement()
{
if (at_eof || ReadBoundary())
return null;
Element elem = new Element();
string header;
while ((header = ReadHeaders()) != null)
{
if (StrUtils.StartsWith(header, "Content-Disposition:", true))
{
elem.Name = GetContentDispositionAttribute(header, "name");
elem.Filename = StripPath(GetContentDispositionAttributeWithEncoding(header, "filename"));
}
else if (StrUtils.StartsWith(header, "Content-Type:", true))
{
elem.ContentType = header.Substring("Content-Type:".Length).Trim();
elem.Encoding = GetEncoding(elem.ContentType);
}
}
long start = 0;
start = data.Position;
elem.Start = start;
long pos = MoveToNextBoundary();
if (pos == -1)
return null;
elem.Length = pos - start;
return elem;
}
static string StripPath(string path)
{
if (path == null || path.Length == 0)
return path;
if (path.IndexOf(":\\") != 1 && !path.StartsWith("\\\\"))
return path;
return path.Substring(path.LastIndexOf('\\') + 1);
}
}
}
}
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