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/*
* Credentials Manager
* (C) 2011,2012 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include <botan/credentials_manager.h>
#include <botan/x509path.h>
namespace Botan {
std::string Credentials_Manager::psk_identity_hint(const std::string&,
const std::string&)
{
return "";
}
std::string Credentials_Manager::psk_identity(const std::string&,
const std::string&,
const std::string&)
{
return "";
}
SymmetricKey Credentials_Manager::psk(const std::string&,
const std::string&,
const std::string& identity)
{
throw Internal_Error("No PSK set for identity " + identity);
}
bool Credentials_Manager::attempt_srp(const std::string&,
const std::string&)
{
return false;
}
std::string Credentials_Manager::srp_identifier(const std::string&,
const std::string&)
{
return "";
}
std::string Credentials_Manager::srp_password(const std::string&,
const std::string&,
const std::string&)
{
return "";
}
bool Credentials_Manager::srp_verifier(const std::string&,
const std::string&,
const std::string&,
std::string&,
BigInt&,
std::vector<byte>&,
bool)
{
return false;
}
std::vector<X509_Certificate> Credentials_Manager::cert_chain(
const std::vector<std::string>&,
const std::string&,
const std::string&)
{
return std::vector<X509_Certificate>();
}
std::vector<X509_Certificate> Credentials_Manager::cert_chain_single_type(
const std::string& cert_key_type,
const std::string& type,
const std::string& context)
{
std::vector<std::string> cert_types;
cert_types.push_back(cert_key_type);
return cert_chain(cert_types, type, context);
}
Private_Key* Credentials_Manager::private_key_for(const X509_Certificate&,
const std::string&,
const std::string&)
{
return nullptr;
}
std::vector<Certificate_Store*>
Credentials_Manager::trusted_certificate_authorities(
const std::string&,
const std::string&)
{
return std::vector<Certificate_Store*>();
}
namespace {
bool cert_in_some_store(const std::vector<Certificate_Store*>& trusted_CAs,
const X509_Certificate& trust_root)
{
for(auto CAs : trusted_CAs)
if(CAs->certificate_known(trust_root))
return true;
return false;
}
Usage_Type choose_leaf_usage(const std::string& ctx)
{
// These are reversed because ctx is denoting the current perspective
if(ctx == "tls-client")
return Usage_Type::TLS_SERVER_AUTH;
else if(ctx == "tls-server")
return Usage_Type::TLS_CLIENT_AUTH;
else
return Usage_Type::UNSPECIFIED;
}
}
void Credentials_Manager::verify_certificate_chain(
const std::string& type,
const std::string& purported_hostname,
const std::vector<X509_Certificate>& cert_chain)
{
if(cert_chain.empty())
throw Invalid_Argument("Certificate chain was empty");
auto trusted_CAs = trusted_certificate_authorities(type, purported_hostname);
Path_Validation_Restrictions restrictions;
Path_Validation_Result result = x509_path_validate(cert_chain,
restrictions,
trusted_CAs,
purported_hostname,
choose_leaf_usage(type));
if(!result.successful_validation())
throw Exception("Certificate validation failure: " + result.result_string());
if(!cert_in_some_store(trusted_CAs, result.trust_root()))
throw Exception("Certificate chain roots in unknown/untrusted CA");
}
}
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