You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
917 lines
28 KiB
917 lines
28 KiB
using System;
|
|
using System.Collections.Specialized;
|
|
using System.Globalization;
|
|
using System.IO;
|
|
using System.Text;
|
|
using System.Threading.Tasks;
|
|
using System.Web;
|
|
using ServiceStack;
|
|
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);
|
|
}
|
|
|
|
async Task LoadMultiPart()
|
|
{
|
|
string boundary = GetParameter(ContentType, "; boundary=");
|
|
if (boundary == null)
|
|
return;
|
|
|
|
using (var requestStream = GetSubStream(InputStream, _memoryStreamProvider))
|
|
{
|
|
//DB: 30/01/11 - Hack to get around non-seekable stream and received HTTP request
|
|
//Not ending with \r\n?
|
|
var ms = _memoryStreamProvider.CreateNew(32 * 1024);
|
|
await requestStream.CopyToAsync(ms).ConfigureAwait(false);
|
|
|
|
var 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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
public NameValueCollection Form
|
|
{
|
|
get
|
|
{
|
|
if (form == null)
|
|
{
|
|
form = new WebROCollection();
|
|
files = new HttpFileCollection();
|
|
|
|
if (IsContentType("multipart/form-data", true))
|
|
{
|
|
var task = LoadMultiPart();
|
|
Task.WaitAll(task);
|
|
}
|
|
else if (IsContentType("application/x-www-form-urlencoded", true))
|
|
{
|
|
var task = LoadWwwForm();
|
|
Task.WaitAll(task);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
public string Accept
|
|
{
|
|
get
|
|
{
|
|
return string.IsNullOrEmpty(request.Headers[HttpHeaders.Accept]) ? null : request.Headers[HttpHeaders.Accept];
|
|
}
|
|
}
|
|
|
|
public string Authorization
|
|
{
|
|
get
|
|
{
|
|
return string.IsNullOrEmpty(request.Headers[HttpHeaders.Authorization]) ? null : request.Headers[HttpHeaders.Authorization];
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
async Task LoadWwwForm()
|
|
{
|
|
using (Stream input = GetSubStream(InputStream, _memoryStreamProvider))
|
|
{
|
|
using (var ms = _memoryStreamProvider.CreateNew())
|
|
{
|
|
await input.CopyToAsync(ms).ConfigureAwait(false);
|
|
ms.Position = 0;
|
|
|
|
using (StreamReader s = new StreamReader(ms, 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);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|