public Buf readBufFully(Buf buf, long n)
{
return m_in.readBufFully(buf, n);
}
public virtual Buf hmac(String algorithm, Buf key)
{
throw UnsupportedErr.make(@typeof()+".hmac").val;
}
public Long readBuf(Buf other, long n)
{
return m_in.readBuf(other, n);
}
public virtual OutStream writeBuf(Buf buf)
{
return writeBuf(buf, buf.remaining());
}
public virtual OutStream writeBuf(Buf buf, long n)
{
try
{
m_out.writeBuf(buf, n);
return this;
}
catch (System.NullReferenceException e)
{
if (m_out == null)
throw UnsupportedErr.make(@typeof().qname() + " wraps null OutStream").val;
else
throw e;
}
}
public override Long readBuf(Buf buf, long n)
{
try
{
long read = buf.pipeFrom(inStream, n);
if (read <= 0) return null;
return Long.valueOf(read);
}
catch (IOException e)
{
throw IOErr.make(e).val;
}
}
public virtual Buf readBufFully(Buf buf, long n)
{
if (buf == null) buf = Buf.make(n);
long total = n;
long got = 0;
while (got < total)
{
Long r = readBuf(buf, total-got);
if (r == null || r.longValue() == 0) throw IOErr.make("Unexpected end of stream").val;
got += r.longValue();
}
buf.flip();
return buf;
}
public override OutStream writeBuf(Buf other, long n)
{
int len = (int)n;
p.grow(p.m_pos+len);
other.pipeTo(p.m_buf, p.m_pos, len);
p.m_pos += len;
if (p.m_pos > p.m_size) p.m_size = p.m_pos;
return this;
}
public override OutStream writeBuf(Buf buf)
{
return writeBuf(buf, buf.remaining());
}
public override Buf hmac(string algorithm, Buf keyBuf)
{
// get digest algorthim
string alg = algorithm;
if (alg == "SHA-1") alg = "SHA1"; // to make .NET happy
HashAlgorithm ha = HashAlgorithm.Create(alg);
if (ha == null)
throw ArgErr.make("Unknown digest algorthm: " + algorithm).val;
// get secret key bytes
int blockSize = 64;
byte[] keyBytes = null;
int keySize = 0;
try
{
// get key bytes
MemBuf keyMemBuf = (MemBuf)keyBuf;
keyBytes = keyMemBuf.m_buf;
keySize = keyMemBuf.m_size;
// key is greater than block size we hash it first
if (keySize > blockSize)
{
keyBytes = ha.ComputeHash(keyBytes, 0, keySize);
keySize = keyBytes.Length;
}
}
catch (System.InvalidCastException)
{
throw UnsupportedErr.make("key parameter must be memory buffer").val;
}
// RFC 2104:
// ipad = the byte 0x36 repeated B times
// opad = the byte 0x5C repeated B times
// H(K XOR opad, H(K XOR ipad, text))
MemBuf acc = new MemBuf(1024);
// inner digest: H(K XOR ipad, text)
for (int i=0; i<blockSize; ++i)
{
if (i < keySize)
acc.write((byte)(keyBytes[i] ^ 0x36));
else
acc.write((byte)0x36);
}
acc.pipeFrom(m_buf, 0, m_size);
byte[] innerDigest = ha.ComputeHash(acc.m_buf, 0, acc.m_size);
// outer digest: H(K XOR opad, innerDigest)
acc.clear();
for (int i=0; i<blockSize; ++i)
{
if (i < keySize)
acc.write((byte)(keyBytes[i] ^ 0x5C));
else
acc.write((byte)0x5C);
}
acc.pipeFrom(innerDigest, 0, innerDigest.Length);
// return result
return new MemBuf(ha.ComputeHash(acc.m_buf, 0, acc.m_size));
}
public override Long readBuf(Buf other, long n)
{
if (p.m_pos >= p.m_size) return null;
int len = Math.Min(p.m_size-p.m_pos, (int)n);
other.pipeFrom(p.m_buf, p.m_pos, len);
p.m_pos += len;
return Long.valueOf(len);
}
public override OutStream writeBuf(Buf buf, long n)
{
throw UnsupportedErr.make("binary write on StrBuf output").val;
}
public override OutStream writeBuf(Buf other, long n)
{
try
{
other.pipeTo(p.m_stream, n);
return this;
}
catch (IOException e) { throw IOErr.make(e).val; }
catch (System.NotSupportedException e) { throw IOErr.make(e.Message, e).val; }
}
public override Long readBuf(Buf other, long n)
{
try
{
long read = other.pipeFrom(p.m_stream, n);
if (read < 0) return null;
return Long.valueOf(read);
}
catch (IOException e)
{
throw IOErr.make(e).val;
}
}
public Buf writeBuf(Buf other)
{
m_out.writeBuf(other); return this;
}
public override OutStream writeBuf(Buf buf, long n)
{
try
{
buf.pipeTo(outStream, n);
return this;
}
catch (IOException e)
{
throw IOErr.make(e).val;
}
}
public Buf writeBuf(Buf other, long n)
{
m_out.writeBuf(other, n); return this;
}
public static IpAddr makeBytes(Buf bytes)
{
try
{
MemBuf mb = bytes as MemBuf;
IPAddress dotnet = new IPAddress(mb.bytes());
return make(dotnet.ToString(), dotnet);
}
catch (SocketException e)
{
throw ArgErr.make(e.Message).val;
}
}
public override OutStream writeBuf(Buf buf, long n)
{
throw UnsupportedErr.make("binary write on StrBuf output").val;
}
public virtual Long readBuf(Buf buf, long n)
{
try
{
return m_in.readBuf(buf, n);
}
catch (System.NullReferenceException e)
{
if (m_in == null)
throw UnsupportedErr.make(@typeof().qname() + " wraps null InStream").val;
else
throw e;
}
}
