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/*
* Certificate Request Message
* (C) 2004-2006 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#include <botan/tls_messages.h>
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
#include <botan/loadstor.h>
#include <botan/secqueue.h>
namespace Botan {
/**
* Create a new Certificate Request message
*/
Certificate_Req::Certificate_Req(Record_Writer& writer,
HandshakeHash& hash,
const std::vector<X509_Certificate>& certs)
{
for(u32bit j = 0; j != certs.size(); j++)
names.push_back(certs[j].subject_dn());
// FIXME: should be able to choose what to ask for
types.push_back(RSA_CERT);
types.push_back(DSS_CERT);
send(writer, hash);
}
/**
* Serialize a Certificate Request message
*/
SecureVector<byte> Certificate_Req::serialize() const
{
SecureVector<byte> buf;
buf.append(types.size());
for(u32bit j = 0; j != types.size(); j++)
buf.append(types[j]);
DER_Encoder encoder;
for(u32bit j = 0; j != names.size(); j++)
encoder.encode(names[j]);
SecureVector<byte> der_names = encoder.get_contents();
u16bit names_size = der_names.size();
buf.append(get_byte(0, names_size));
buf.append(get_byte(1, names_size));
buf.append(der_names);
return buf;
}
/**
* Deserialize a Certificate Request message
*/
void Certificate_Req::deserialize(const MemoryRegion<byte>& buf)
{
if(buf.size() < 4)
throw Decoding_Error("Certificate_Req: Bad certificate request");
u32bit types_size = buf[0];
if(buf.size() < types_size + 3)
throw Decoding_Error("Certificate_Req: Bad certificate request");
for(u32bit j = 0; j != types_size; j++)
types.push_back(static_cast<Certificate_Type>(buf[j+1]));
u32bit names_size = make_u16bit(buf[types_size+2], buf[types_size+3]);
if(buf.size() != names_size + types_size + 3)
throw Decoding_Error("Certificate_Req: Bad certificate request");
BER_Decoder decoder(buf.begin() + types_size + 3, names_size);
while(decoder.more_items())
{
X509_DN name;
decoder.decode(name);
names.push_back(name);
}
}
/**
* Create a new Certificate message
*/
Certificate::Certificate(Record_Writer& writer,
const std::vector<X509_Certificate>& cert_list,
HandshakeHash& hash)
{
certs = cert_list;
send(writer, hash);
}
/**
* Serialize a Certificate message
*/
SecureVector<byte> Certificate::serialize() const
{
SecureVector<byte> buf(3);
for(u32bit j = 0; j != certs.size(); j++)
{
SecureVector<byte> raw_cert = certs[j].BER_encode();
u32bit cert_size = raw_cert.size();
for(u32bit j = 0; j != 3; j++)
buf.append(get_byte(j+1, cert_size));
buf.append(raw_cert);
}
u32bit buf_size = buf.size() - 3;
for(u32bit j = 0; j != 3; j++)
buf[j] = get_byte(j+1, buf_size);
return buf;
}
/**
* Deserialize a Certificate message
*/
void Certificate::deserialize(const MemoryRegion<byte>& buf)
{
if(buf.size() < 3)
throw Decoding_Error("Certificate: Message malformed");
u32bit total_size = make_u32bit(0, buf[0], buf[1], buf[2]);
SecureQueue queue;
queue.write(buf + 3, buf.size() - 3);
if(queue.size() != total_size)
throw Decoding_Error("Certificate: Message malformed");
while(queue.size())
{
if(queue.size() < 3)
throw Decoding_Error("Certificate: Message malformed");
byte len[3];
queue.read(len, 3);
u32bit cert_size = make_u32bit(0, len[0], len[1], len[2]);
u32bit original_size = queue.size();
X509_Certificate cert(queue);
if(queue.size() + cert_size != original_size)
throw Decoding_Error("Certificate: Message malformed");
certs.push_back(cert);
}
}
}
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