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/*
* Certificate Message
* (C) 2004-2006,2012 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/internal/tls_messages.h>
#include <botan/internal/tls_reader.h>
#include <botan/internal/tls_extensions.h>
#include <botan/internal/tls_handshake_io.h>
#include <botan/der_enc.h>
#include <botan/ber_dec.h>
#include <botan/loadstor.h>
namespace Botan {
namespace TLS {
/**
* Create a new Certificate message
*/
Certificate::Certificate(Handshake_IO& io,
Handshake_Hash& hash,
const std::vector<X509_Certificate>& cert_list) :
m_certs(cert_list)
{
hash.update(io.send(*this));
}
/**
* Deserialize a Certificate message
*/
Certificate::Certificate(const std::vector<byte>& buf)
{
if(buf.size() < 3)
throw Decoding_Error("Certificate: Message malformed");
const size_t total_size = make_u32bit(0, buf[0], buf[1], buf[2]);
if(total_size != buf.size() - 3)
throw Decoding_Error("Certificate: Message malformed");
const byte* certs = &buf[3];
while(size_t remaining_bytes = &buf[buf.size()] - certs)
{
if(remaining_bytes < 3)
throw Decoding_Error("Certificate: Message malformed");
const size_t cert_size = make_u32bit(0, certs[0], certs[1], certs[2]);
if(remaining_bytes < (3 + cert_size))
throw Decoding_Error("Certificate: Message malformed");
DataSource_Memory cert_buf(&certs[3], cert_size);
m_certs.push_back(X509_Certificate(cert_buf));
certs += cert_size + 3;
}
}
/**
* Serialize a Certificate message
*/
std::vector<byte> Certificate::serialize() const
{
std::vector<byte> buf(3);
for(size_t i = 0; i != m_certs.size(); ++i)
{
std::vector<byte> raw_cert = m_certs[i].BER_encode();
const size_t cert_size = raw_cert.size();
for(size_t i = 0; i != 3; ++i)
buf.push_back(get_byte<u32bit>(i+1, cert_size));
buf += raw_cert;
}
const size_t buf_size = buf.size() - 3;
for(size_t i = 0; i != 3; ++i)
buf[i] = get_byte<u32bit>(i+1, buf_size);
return buf;
}
}
}
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