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/**
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0.
*/
#include <aws/crt/http/HttpProxyStrategy.h>
#include <aws/common/string.h>
#include <aws/crt/http/HttpConnection.h>
#include <aws/http/proxy.h>
namespace Aws
{
namespace Crt
{
namespace Http
{
HttpProxyStrategy::HttpProxyStrategy(struct aws_http_proxy_strategy *strategy) : m_strategy(strategy) {}
HttpProxyStrategy::~HttpProxyStrategy() { aws_http_proxy_strategy_release(m_strategy); }
HttpProxyStrategyBasicAuthConfig::HttpProxyStrategyBasicAuthConfig()
: ConnectionType(AwsHttpProxyConnectionType::Legacy), Username(), Password()
{
}
std::shared_ptr<HttpProxyStrategy> HttpProxyStrategy::CreateBasicHttpProxyStrategy(
const HttpProxyStrategyBasicAuthConfig &config,
Allocator *allocator)
{
struct aws_http_proxy_strategy_basic_auth_options basicConfig;
AWS_ZERO_STRUCT(basicConfig);
basicConfig.proxy_connection_type = (enum aws_http_proxy_connection_type)config.ConnectionType;
basicConfig.user_name = aws_byte_cursor_from_c_str(config.Username.c_str());
basicConfig.password = aws_byte_cursor_from_c_str(config.Password.c_str());
struct aws_http_proxy_strategy *strategy =
aws_http_proxy_strategy_new_basic_auth(allocator, &basicConfig);
if (strategy == NULL)
{
return NULL;
}
return Aws::Crt::MakeShared<HttpProxyStrategy>(allocator, strategy);
}
class AdaptiveHttpProxyStrategy : public HttpProxyStrategy
{
public:
AdaptiveHttpProxyStrategy(
Allocator *allocator,
const KerberosGetTokenFunction &kerberosGetToken,
const KerberosGetTokenFunction &ntlmGetCredential,
const NtlmGetTokenFunction &ntlmGetToken)
: HttpProxyStrategy(nullptr), m_Allocator(allocator), m_KerberosGetToken(kerberosGetToken),
m_NtlmGetCredential(ntlmGetCredential), m_NtlmGetToken(ntlmGetToken)
{
}
void SetStrategy(struct aws_http_proxy_strategy *strategy)
{
aws_http_proxy_strategy_release(m_strategy);
m_strategy = strategy;
}
static struct aws_string *NtlmGetCredential(void *user_data, int *error_code)
{
AdaptiveHttpProxyStrategy *strategy = reinterpret_cast<AdaptiveHttpProxyStrategy *>(user_data);
String ntlmCredential;
if (strategy->m_NtlmGetCredential(ntlmCredential))
{
struct aws_string *token =
aws_string_new_from_c_str(strategy->m_Allocator, ntlmCredential.c_str());
if (token != NULL)
{
return token;
}
*error_code = aws_last_error();
}
else
{
*error_code = AWS_ERROR_HTTP_PROXY_STRATEGY_TOKEN_RETRIEVAL_FAILURE;
}
return NULL;
}
static struct aws_string *KerberosGetToken(void *user_data, int *error_code)
{
AdaptiveHttpProxyStrategy *strategy = reinterpret_cast<AdaptiveHttpProxyStrategy *>(user_data);
String kerberosToken;
if (strategy->m_KerberosGetToken(kerberosToken))
{
struct aws_string *token =
aws_string_new_from_c_str(strategy->m_Allocator, kerberosToken.c_str());
if (token != NULL)
{
return token;
}
*error_code = aws_last_error();
}
else
{
*error_code = AWS_ERROR_HTTP_PROXY_STRATEGY_TOKEN_RETRIEVAL_FAILURE;
}
return NULL;
}
static struct aws_string *NtlmGetToken(
void *user_data,
const struct aws_byte_cursor *challenge_cursor,
int *error_code)
{
AdaptiveHttpProxyStrategy *strategy = reinterpret_cast<AdaptiveHttpProxyStrategy *>(user_data);
String ntlmToken;
String challengeToken((const char *)challenge_cursor->ptr, challenge_cursor->len);
if (strategy->m_NtlmGetToken(challengeToken, ntlmToken))
{
struct aws_string *token = aws_string_new_from_c_str(strategy->m_Allocator, ntlmToken.c_str());
if (token != NULL)
{
return token;
}
*error_code = aws_last_error();
}
else
{
*error_code = AWS_ERROR_HTTP_PROXY_STRATEGY_TOKEN_RETRIEVAL_FAILURE;
}
return NULL;
}
private:
Allocator *m_Allocator;
KerberosGetTokenFunction m_KerberosGetToken;
KerberosGetTokenFunction m_NtlmGetCredential;
NtlmGetTokenFunction m_NtlmGetToken;
};
std::shared_ptr<HttpProxyStrategy> HttpProxyStrategy::CreateAdaptiveHttpProxyStrategy(
const HttpProxyStrategyAdaptiveConfig &config,
Allocator *allocator)
{
std::shared_ptr<AdaptiveHttpProxyStrategy> adaptiveStrategy =
Aws::Crt::MakeShared<AdaptiveHttpProxyStrategy>(
allocator, allocator, config.KerberosGetToken, config.NtlmGetCredential, config.NtlmGetToken);
struct aws_http_proxy_strategy_tunneling_kerberos_options kerberosConfig;
AWS_ZERO_STRUCT(kerberosConfig);
kerberosConfig.get_token = AdaptiveHttpProxyStrategy::KerberosGetToken;
kerberosConfig.get_token_user_data = adaptiveStrategy.get();
struct aws_http_proxy_strategy_tunneling_ntlm_options ntlmConfig;
AWS_ZERO_STRUCT(ntlmConfig);
ntlmConfig.get_challenge_token = AdaptiveHttpProxyStrategy::NtlmGetToken;
ntlmConfig.get_token = AdaptiveHttpProxyStrategy::NtlmGetCredential;
ntlmConfig.get_challenge_token_user_data = adaptiveStrategy.get();
struct aws_http_proxy_strategy_tunneling_adaptive_options adaptiveConfig;
AWS_ZERO_STRUCT(adaptiveConfig);
if (config.KerberosGetToken)
{
adaptiveConfig.kerberos_options = &kerberosConfig;
}
if (config.NtlmGetToken)
{
adaptiveConfig.ntlm_options = &ntlmConfig;
}
struct aws_http_proxy_strategy *strategy =
aws_http_proxy_strategy_new_tunneling_adaptive(allocator, &adaptiveConfig);
if (strategy == NULL)
{
return NULL;
}
adaptiveStrategy->SetStrategy(strategy);
return adaptiveStrategy;
}
} // namespace Http
} // namespace Crt
} // namespace Aws
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