HDFS-10450: libhdfs++: Add Cyrus SASL support. Contributed by Don Davis.
This commit is contained in:
Bob Hansen
James Clampffer
parent
9d1c902159
commit
549a5dbce9
@ -201,4 +201,3 @@ ENV FORREST_HOME=/opt/apache-forrest
|
||||
ADD hadoop_env_checks.sh /root/hadoop_env_checks.sh
|
||||
RUN chmod 755 /root/hadoop_env_checks.sh
|
||||
RUN echo '~/hadoop_env_checks.sh' >> /root/.bashrc
|
||||
|
||||
|
||||
@ -23,13 +23,15 @@ cmake_minimum_required(VERSION 2.8)
|
||||
enable_testing()
|
||||
include (CTest)
|
||||
SET(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake" ${CMAKE_MODULE_PATH})
|
||||
SET(CMAKE_DISABLE_FIND_PACKAGE_CyrusSASL TRUE) # Until development is done.
|
||||
|
||||
# If there's a better way to inform FindCyrusSASL.cmake, let's make this cleaner:
|
||||
SET(CMAKE_PREFIX_PATH "${CMAKE_PREFIX_PATH};${CYRUS_SASL_DIR};${GSASL_DIR}")
|
||||
|
||||
find_package(Doxygen)
|
||||
find_package(OpenSSL REQUIRED)
|
||||
find_package(Protobuf REQUIRED)
|
||||
find_package(GSasl)
|
||||
find_package(CyrusSASL)
|
||||
find_package(GSasl)
|
||||
find_package(Threads)
|
||||
|
||||
find_program(MEMORYCHECK_COMMAND valgrind HINTS ${VALGRIND_DIR} )
|
||||
@ -41,15 +43,19 @@ if (REQUIRE_VALGRIND AND MEMORYCHECK_COMMAND MATCHES "MEMORYCHECK_COMMAND-NOTFOU
|
||||
"The path can be included via a -DVALGRIND_DIR=... flag passed to CMake.")
|
||||
endif (REQUIRE_VALGRIND AND MEMORYCHECK_COMMAND MATCHES "MEMORYCHECK_COMMAND-NOTFOUND" )
|
||||
|
||||
# Find the SASL library to use. If you don't want to require a sasl library,
|
||||
# define -DNO_SASL=1 in your cmake call
|
||||
# Prefer Cyrus SASL, but use GSASL if it is found
|
||||
# Note that the packages can be disabled by setting CMAKE_DISABLE_FIND_PACKAGE_GSasl or
|
||||
# CMAKE_DISABLE_FIND_PACKAGE_CyrusSASL, respectively (case sensitive)
|
||||
set (SASL_LIBRARIES)
|
||||
set (SASL_INCLUDE_DIR)
|
||||
if (NOT NO_SASL)
|
||||
if (CYRUS_SASL_FOUND)
|
||||
message(STATUS "Using Cyrus SASL; link with ${CYRUS_SASL_LIBRARIES}")
|
||||
message(STATUS "Using Cyrus SASL; link with ${CYRUS_SASL_SHARED_LIB}")
|
||||
set (SASL_INCLUDE_DIR ${CYRUS_SASL_INCLUDE_DIR})
|
||||
set (SASL_LIBRARIES ${CYRUS_SASL_SHARED_LIB})
|
||||
set (CMAKE_USING_CYRUS_SASL 1)
|
||||
add_definitions(-DUSE_SASL -DUSE_CYRUS_SASL)
|
||||
else (CYRUS_SASL_FOUND)
|
||||
if (REQUIRE_CYRUS_SASL)
|
||||
@ -62,15 +68,22 @@ else (CYRUS_SASL_FOUND)
|
||||
message(STATUS "Using GSASL; link with ${GSASL_LIBRARIES}")
|
||||
set (SASL_INCLUDE_DIR ${GSASL_INCLUDE_DIR})
|
||||
set (SASL_LIBRARIES ${GSASL_LIBRARIES})
|
||||
set (CMAKE_USING_GSASL 1)
|
||||
add_definitions(-DUSE_SASL -DUSE_GSASL)
|
||||
else (GSASL_FOUND)
|
||||
if (REQUIRE_GSASL)
|
||||
message(FATAL_ERROR "GSASL was required but not found. "
|
||||
"The path can be included via a -DGSASL_DIR=... flag passed to CMake.")
|
||||
endif (REQUIRE_GSASL)
|
||||
message(STATUS "Not using SASL")
|
||||
|
||||
# No SASL was found, but NO_SASL was not defined
|
||||
message(FATAL_ERROR "Cound not find a SASL library (GSASL (gsasl) or Cyrus SASL (libsasl2). "
|
||||
"Install/configure one of them or define NO_SASL=1 in your cmake call")
|
||||
endif (GSASL_FOUND)
|
||||
endif (CYRUS_SASL_FOUND)
|
||||
else (NOT NO_SASL)
|
||||
message(STATUS "Compiling with NO SASL SUPPORT")
|
||||
endif (NOT NO_SASL)
|
||||
|
||||
add_definitions(-DASIO_STANDALONE -DASIO_CPP11_DATE_TIME)
|
||||
|
||||
|
||||
@ -16,7 +16,16 @@
|
||||
# limitations under the License.
|
||||
#
|
||||
|
||||
include_directories(${OPENSSL_INCLUDE_DIRS})
|
||||
add_library(rpc_obj OBJECT rpc_connection.cc rpc_engine.cc sasl_protocol.cc sasl_engine.cc)
|
||||
list(APPEND rpc_object_items rpc_connection.cc rpc_engine.cc sasl_protocol.cc sasl_engine.cc)
|
||||
if (CMAKE_USING_CYRUS_SASL)
|
||||
list(APPEND rpc_object_items cyrus_sasl_engine.cc)
|
||||
endif (CMAKE_USING_CYRUS_SASL)
|
||||
if (CMAKE_USING_GSASL)
|
||||
list(APPEND rpc_object_items gsasl_engine.cc)
|
||||
endif (CMAKE_USING_GSASL)
|
||||
|
||||
add_library(rpc_obj OBJECT ${rpc_object_items})
|
||||
|
||||
|
||||
add_dependencies(rpc_obj proto)
|
||||
add_library(rpc $<TARGET_OBJECTS:rpc_obj>)
|
||||
|
||||
@ -214,7 +214,7 @@ void RpcConnection::HandshakeComplete(const Status &s) {
|
||||
#ifdef USE_SASL
|
||||
sasl_protocol_ = std::make_shared<SaslProtocol>(cluster_name_, auth_info_, shared_from_this());
|
||||
sasl_protocol_->SetEventHandlers(event_handlers_);
|
||||
sasl_protocol_->authenticate([shared_this, this](
|
||||
sasl_protocol_->Authenticate([shared_this, this](
|
||||
const Status & status, const AuthInfo & new_auth_info) {
|
||||
AuthComplete(status, new_auth_info); } );
|
||||
#else
|
||||
|
||||
@ -16,20 +16,19 @@
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "sasl_engine.h"
|
||||
|
||||
#include "common/logging.h"
|
||||
|
||||
#include <sstream>
|
||||
#include <string.h> // memcpy()
|
||||
|
||||
#include "sasl_engine.h"
|
||||
#include "common/logging.h"
|
||||
|
||||
namespace hdfs {
|
||||
|
||||
/*****************************************************************************
|
||||
* BASE CLASS
|
||||
* SASL ENGINE BASE CLASS
|
||||
*/
|
||||
|
||||
SaslEngine::State SaslEngine::getState()
|
||||
SaslEngine::State SaslEngine::GetState()
|
||||
{
|
||||
return state_;
|
||||
}
|
||||
@ -37,13 +36,13 @@ SaslEngine::State SaslEngine::getState()
|
||||
SaslEngine::~SaslEngine() {
|
||||
}
|
||||
|
||||
Status SaslEngine::setKerberosInfo(const std::string &principal)
|
||||
Status SaslEngine::SetKerberosInfo(const std::string &principal)
|
||||
{
|
||||
principal_ = principal;
|
||||
return Status::OK();
|
||||
}
|
||||
|
||||
Status SaslEngine::setPasswordInfo(const std::string &id,
|
||||
Status SaslEngine::SetPasswordInfo(const std::string &id,
|
||||
const std::string &password)
|
||||
{
|
||||
id_ = id;
|
||||
@ -51,135 +50,31 @@ Status SaslEngine::setPasswordInfo(const std::string &id,
|
||||
return Status::OK();
|
||||
}
|
||||
|
||||
bool SaslEngine::ChooseMech(const std::vector<SaslMethod> &resp_auths) {
|
||||
Status status = Status::OK();
|
||||
|
||||
#ifdef USE_GSASL
|
||||
/*****************************************************************************
|
||||
* GSASL
|
||||
*/
|
||||
if (resp_auths.empty()) return NULL;
|
||||
|
||||
#include <gsasl.h>
|
||||
for (SaslMethod auth: resp_auths) {
|
||||
if ( auth.mechanism != "GSSAPI") continue; // Hack: only GSSAPI for now
|
||||
|
||||
// do a proper deep copy of the vector element
|
||||
// that we like, because the original v ector will go away:
|
||||
chosen_mech_.mechanism = auth.mechanism;
|
||||
chosen_mech_.protocol = auth.protocol;
|
||||
chosen_mech_.serverid = auth.serverid;
|
||||
chosen_mech_.challenge = auth.challenge;
|
||||
|
||||
/*****************************************************************************
|
||||
* UTILITY FUNCTIONS
|
||||
*/
|
||||
|
||||
Status gsasl_rc_to_status(int rc)
|
||||
{
|
||||
if (rc == GSASL_OK) {
|
||||
return Status::OK();
|
||||
} else {
|
||||
std::ostringstream ss;
|
||||
ss << "Cannot initialize client (" << rc << "): " << gsasl_strerror(rc);
|
||||
return Status::Error(ss.str().c_str());
|
||||
}
|
||||
return auth.mechanism.c_str();
|
||||
}
|
||||
|
||||
state_ = kErrorState;
|
||||
status = Status::Error("SaslEngine::chooseMech(): No good protocol.");
|
||||
|
||||
GSaslEngine::~GSaslEngine()
|
||||
{
|
||||
if (session_ != nullptr) {
|
||||
gsasl_finish(session_);
|
||||
}
|
||||
// Clear out the chosen mech
|
||||
chosen_mech_ = SaslMethod();
|
||||
|
||||
if (ctx_ != nullptr) {
|
||||
gsasl_done(ctx_);
|
||||
}
|
||||
}
|
||||
return NULL;
|
||||
} // choose_mech()
|
||||
|
||||
std::pair<Status, SaslMethod> GSaslEngine::start(const std::vector<SaslMethod> &protocols)
|
||||
{
|
||||
int rc = gsasl_init(&ctx_);
|
||||
if (rc != GSASL_OK) {
|
||||
state_ = kError;
|
||||
return std::make_pair(gsasl_rc_to_status(rc), SaslMethod());
|
||||
}
|
||||
|
||||
// Hack to only do GSSAPI at the moment
|
||||
for (auto protocol: protocols) {
|
||||
if (protocol.mechanism == "GSSAPI") {
|
||||
Status init = init_kerberos(protocol);
|
||||
if (init.ok()) {
|
||||
state_ = kWaitingForData;
|
||||
return std::make_pair(init, protocol);
|
||||
} else {
|
||||
state_ = kError;
|
||||
return std::make_pair(init, SaslMethod());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
state_ = kError;
|
||||
return std::make_pair(Status::Error("No good protocol"), SaslMethod());
|
||||
}
|
||||
|
||||
Status GSaslEngine::init_kerberos(const SaslMethod & mechanism) {
|
||||
/* Create new authentication session. */
|
||||
int rc = gsasl_client_start(ctx_, mechanism.mechanism.c_str(), &session_);
|
||||
if (rc != GSASL_OK) {
|
||||
return gsasl_rc_to_status(rc);
|
||||
}
|
||||
|
||||
if (!principal_) {
|
||||
return Status::Error("Attempted kerberos authentication with no principal");
|
||||
}
|
||||
|
||||
gsasl_property_set(session_, GSASL_SERVICE, mechanism.protocol.c_str());
|
||||
gsasl_property_set(session_, GSASL_AUTHID, principal_.value().c_str());
|
||||
gsasl_property_set(session_, GSASL_HOSTNAME, mechanism.serverid.c_str());
|
||||
return Status::OK();
|
||||
}
|
||||
|
||||
std::pair<Status, std::string> GSaslEngine::step(const std::string data)
|
||||
{
|
||||
if (state_ != kWaitingForData)
|
||||
LOG_WARN(kRPC, << "GSaslEngine::step when state is " << state_);
|
||||
|
||||
char * output = NULL;
|
||||
size_t outputSize;
|
||||
int rc = gsasl_step(session_, data.c_str(), data.size(), &output,
|
||||
&outputSize);
|
||||
|
||||
if (rc == GSASL_NEEDS_MORE || rc == GSASL_OK) {
|
||||
std::string retval(output, output ? outputSize : 0);
|
||||
if (output) {
|
||||
free(output);
|
||||
}
|
||||
|
||||
if (rc == GSASL_OK) {
|
||||
state_ = kSuccess;
|
||||
}
|
||||
|
||||
return std::make_pair(Status::OK(), retval);
|
||||
}
|
||||
else {
|
||||
if (output) {
|
||||
free(output);
|
||||
}
|
||||
state_ = kFailure;
|
||||
return std::make_pair(gsasl_rc_to_status(rc), "");
|
||||
}
|
||||
}
|
||||
|
||||
Status GSaslEngine::finish()
|
||||
{
|
||||
if (state_ != kSuccess && state_ != kFailure && state_ != kError )
|
||||
LOG_WARN(kRPC, << "GSaslEngine::finish when state is " << state_);
|
||||
|
||||
if (session_ != nullptr) {
|
||||
gsasl_finish(session_);
|
||||
session_ = NULL;
|
||||
}
|
||||
|
||||
if (ctx_ != nullptr) {
|
||||
gsasl_done(ctx_);
|
||||
ctx_ = nullptr;
|
||||
}
|
||||
|
||||
return Status::OK();
|
||||
}
|
||||
#endif // USE_GSASL
|
||||
|
||||
|
||||
|
||||
}
|
||||
} // namespace hdfs
|
||||
|
||||
@ -22,14 +22,12 @@
|
||||
#include "hdfspp/status.h"
|
||||
#include "optional.hpp"
|
||||
|
||||
#ifdef USE_GSASL
|
||||
#include "gsasl.h"
|
||||
#endif
|
||||
|
||||
#include <vector>
|
||||
|
||||
namespace hdfs {
|
||||
|
||||
class SaslProtocol;
|
||||
|
||||
template <class T>
|
||||
using optional = std::experimental::optional<T>;
|
||||
|
||||
@ -38,7 +36,7 @@ public:
|
||||
std::string protocol;
|
||||
std::string mechanism;
|
||||
std::string serverid;
|
||||
void * data;
|
||||
std::string challenge;
|
||||
};
|
||||
|
||||
class SaslEngine {
|
||||
@ -48,7 +46,7 @@ public:
|
||||
kWaitingForData,
|
||||
kSuccess,
|
||||
kFailure,
|
||||
kError,
|
||||
kErrorState,
|
||||
};
|
||||
|
||||
// State transitions:
|
||||
@ -56,70 +54,51 @@ public:
|
||||
// kUnstarted --start--> kWaitingForData --step-+--> kSuccess --finish--v
|
||||
// \-> kFailure -/
|
||||
|
||||
// State transitions:
|
||||
// \--------------------------/
|
||||
// kUnstarted --start--> kWaitingForData --step-+--> kSuccess --finish--v
|
||||
// \-> kFailure -/
|
||||
|
||||
SaslEngine(): state_ (kUnstarted) {}
|
||||
virtual ~SaslEngine();
|
||||
|
||||
// Must be called when state is kUnstarted
|
||||
Status setKerberosInfo(const std::string &principal);
|
||||
Status SetKerberosInfo(const std::string &principal);
|
||||
// Must be called when state is kUnstarted
|
||||
Status setPasswordInfo(const std::string &id,
|
||||
Status SetPasswordInfo(const std::string &id,
|
||||
const std::string &password);
|
||||
|
||||
// Choose a mechanism from the available ones. Will set the
|
||||
// chosen_mech_ member and return true if we found one we
|
||||
// can process
|
||||
bool ChooseMech(const std::vector<SaslMethod> &avail_auths);
|
||||
|
||||
// Returns the current state
|
||||
State getState();
|
||||
State GetState();
|
||||
|
||||
// Must be called when state is kUnstarted
|
||||
virtual std::pair<Status,SaslMethod> start(
|
||||
const std::vector<SaslMethod> &protocols) = 0;
|
||||
virtual std::pair<Status,std::string> Start() = 0;
|
||||
|
||||
// Must be called when state is kWaitingForData
|
||||
// Returns kOK and any data that should be sent to the server
|
||||
virtual std::pair<Status,std::string> step(const std::string data) = 0;
|
||||
virtual std::pair<Status,std::string> Step(const std::string data) = 0;
|
||||
|
||||
// Must only be called when state is kSuccess, kFailure, or kError
|
||||
virtual Status finish() = 0;
|
||||
// Must only be called when state is kSuccess, kFailure, or kErrorState
|
||||
virtual Status Finish() = 0;
|
||||
|
||||
// main repository of generic Sasl config data:
|
||||
SaslMethod chosen_mech_;
|
||||
protected:
|
||||
State state_;
|
||||
SaslProtocol * sasl_protocol_;
|
||||
|
||||
optional<std::string> principal_;
|
||||
optional<std::string> realm_;
|
||||
optional<std::string> id_;
|
||||
optional<std::string> password_;
|
||||
|
||||
};
|
||||
}; // class SaslEngine
|
||||
|
||||
#ifdef USE_GSASL
|
||||
class GSaslEngine : public SaslEngine
|
||||
{
|
||||
public:
|
||||
GSaslEngine() : SaslEngine(), ctx_(nullptr), session_(nullptr) {}
|
||||
virtual ~GSaslEngine();
|
||||
} // namespace hdfs
|
||||
|
||||
virtual std::pair<Status,SaslMethod> start(
|
||||
const std::vector<SaslMethod> &protocols);
|
||||
virtual std::pair<Status,std::string> step(const std::string data);
|
||||
virtual Status finish();
|
||||
private:
|
||||
Gsasl * ctx_;
|
||||
Gsasl_session * session_;
|
||||
|
||||
Status init_kerberos(const SaslMethod & mechanism);
|
||||
};
|
||||
#endif
|
||||
|
||||
#ifdef USE_CYRUS_SASL
|
||||
class CyrusSaslEngine : public SaslEngine
|
||||
{
|
||||
public:
|
||||
GSaslEngine() : SaslEngine(), ctx_(nullptr), session_(nullptr) {}
|
||||
virtual ~GSaslEngine();
|
||||
|
||||
virtual std::pair<Status,SaslMethod> start(
|
||||
const std::vector<SaslMethod> &protocols);
|
||||
virtual std::pair<Status,std::string> step(const std::string data);
|
||||
virtual Status finish();
|
||||
private:
|
||||
};
|
||||
#endif
|
||||
|
||||
}
|
||||
#endif /* LIB_RPC_SASLENGINE_H */
|
||||
|
||||
@ -16,11 +16,22 @@
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#include "sasl_protocol.h"
|
||||
#include "sasl_engine.h"
|
||||
#include "rpc_engine.h"
|
||||
#include "common/logging.h"
|
||||
|
||||
#include "sasl_engine.h"
|
||||
#include "sasl_protocol.h"
|
||||
|
||||
#if defined USE_SASL
|
||||
#if defined USE_CYRUS_SASL
|
||||
#include "cyrus_sasl_engine.h" // CySaslEngine()
|
||||
#elif defined USE_GSASL
|
||||
#include "gsasl_engine.h" // GSaslEngine()
|
||||
#else
|
||||
#error USE_SASL defined but no engine (USE_GSASL) defined
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#include <optional.hpp>
|
||||
|
||||
namespace hdfs {
|
||||
@ -60,17 +71,13 @@ SaslProtocol::~SaslProtocol()
|
||||
void SaslProtocol::SetEventHandlers(std::shared_ptr<LibhdfsEvents> event_handlers) {
|
||||
std::lock_guard<std::mutex> state_lock(sasl_state_lock_);
|
||||
event_handlers_ = event_handlers;
|
||||
}
|
||||
event_handlers_->call("SASL Start", cluster_name_.c_str(), 0);
|
||||
} // SetEventHandlers() method
|
||||
|
||||
void SaslProtocol::authenticate(std::function<void(const Status & status, const AuthInfo new_auth_info)> callback)
|
||||
void SaslProtocol::Authenticate(std::function<void(const Status & status, const AuthInfo new_auth_info)> callback)
|
||||
{
|
||||
std::lock_guard<std::mutex> state_lock(sasl_state_lock_);
|
||||
|
||||
LOG_TRACE(kRPC, << "Authenticating as " << auth_info_.getUser());
|
||||
|
||||
assert(state_ == kUnstarted);
|
||||
event_handlers_->call("SASL Start", cluster_name_.c_str(), 0);
|
||||
|
||||
callback_ = callback;
|
||||
state_ = kNegotiate;
|
||||
|
||||
@ -86,8 +93,9 @@ void SaslProtocol::authenticate(std::function<void(const Status & status, const
|
||||
std::shared_ptr<RpcSaslProto> resp_msg = std::make_shared<RpcSaslProto>();
|
||||
auto self(shared_from_this());
|
||||
connection->AsyncRpc_locked(SASL_METHOD_NAME, req_msg.get(), resp_msg,
|
||||
[self, req_msg, resp_msg] (const Status & status) { self->OnServerResponse(status, resp_msg.get()); } );
|
||||
}
|
||||
[self, req_msg, resp_msg] (const Status & status) {
|
||||
self->OnServerResponse(status, resp_msg.get()); } );
|
||||
} // authenticate() method
|
||||
|
||||
AuthInfo::AuthMethod ParseMethod(const std::string & method)
|
||||
{
|
||||
@ -103,113 +111,195 @@ AuthInfo::AuthMethod ParseMethod(const std::string & method)
|
||||
else {
|
||||
return AuthInfo::kUnknownAuth;
|
||||
}
|
||||
} // ParseMethod()
|
||||
|
||||
// build_init_msg():
|
||||
// Helper function for Start(), to keep
|
||||
// these ProtoBuf-RPC calls out of the sasl_engine code.
|
||||
|
||||
std::pair<Status, RpcSaslProto>
|
||||
SaslProtocol::BuildInitMessage(std::string & token, const hadoop::common::RpcSaslProto * negotiate_msg)
|
||||
{
|
||||
// The init message needs one of the RpcSaslProto_SaslAuth structures that
|
||||
// was sent in the negotiate message as our chosen mechanism
|
||||
// Map the chosen_mech name back to the RpcSaslProto_SaslAuth from the negotiate
|
||||
// message that it corresponds to
|
||||
SaslMethod & chosenMech = sasl_engine_->chosen_mech_;
|
||||
auto auths = negotiate_msg->auths();
|
||||
auto pb_auth_it = std::find_if(auths.begin(), auths.end(),
|
||||
[chosenMech](const RpcSaslProto_SaslAuth & data)
|
||||
{
|
||||
return data.mechanism() == chosenMech.mechanism;
|
||||
});
|
||||
if (pb_auth_it == auths.end())
|
||||
return std::make_pair(Status::Error("Couldn't find mechanism in negotiate msg"), RpcSaslProto());
|
||||
auto & pb_auth = *pb_auth_it;
|
||||
|
||||
// Prepare INITIATE message
|
||||
RpcSaslProto initiate = RpcSaslProto();
|
||||
|
||||
initiate.set_state(RpcSaslProto_SaslState_INITIATE);
|
||||
// initiate message will contain:
|
||||
// token_ (binary data), and
|
||||
// auths_[ ], an array of objects just like pb_auth.
|
||||
// In our case, we want the auths array
|
||||
// to hold just the single element from pb_auth:
|
||||
|
||||
RpcSaslProto_SaslAuth * respAuth = initiate.add_auths();
|
||||
respAuth->CopyFrom(pb_auth);
|
||||
|
||||
// Mostly, an INITIATE message contains a "Token".
|
||||
// For GSSAPI, the token is a Kerberos AP_REQ, aka
|
||||
// "Authenticated application request," comprising
|
||||
// the client's application ticket & and an encrypted
|
||||
// message that Kerberos calls an "authenticator".
|
||||
|
||||
if (token.empty()) {
|
||||
const char * errmsg = "SaslProtocol::build_init_msg(): No token available.";
|
||||
LOG_ERROR(kRPC, << errmsg);
|
||||
return std::make_pair(Status::Error(errmsg), RpcSaslProto());
|
||||
}
|
||||
|
||||
void SaslProtocol::Negotiate(const hadoop::common::RpcSaslProto * response)
|
||||
{
|
||||
std::vector<SaslMethod> protocols;
|
||||
// add challenge token to the INITIATE message:
|
||||
initiate.set_token(token);
|
||||
|
||||
bool simple_available = false;
|
||||
// the initiate message is ready to send:
|
||||
return std::make_pair(Status::OK(), initiate);
|
||||
} // build_init_msg()
|
||||
|
||||
// Converts the RpcSaslProto.auths ararray from RpcSaslProto_SaslAuth PB
|
||||
// structures to SaslMethod structures
|
||||
static bool
|
||||
extract_auths(std::vector<SaslMethod> & resp_auths,
|
||||
const hadoop::common::RpcSaslProto * response) {
|
||||
|
||||
bool simple_avail = false;
|
||||
auto pb_auths = response->auths();
|
||||
|
||||
// For our GSSAPI case, an element of pb_auths contains:
|
||||
// method_ = "KERBEROS"
|
||||
// mechanism_ = "GSSAPI"
|
||||
// protocol_ = "nn" /* "name node", AKA "hdfs"
|
||||
// serverid_ = "foobar1.acmecorp.com"
|
||||
// challenge_ = ""
|
||||
// _cached_size_ = 0
|
||||
// _has_bits_ = 15
|
||||
|
||||
for (int i = 0; i < pb_auths.size(); ++i) {
|
||||
auto pb_auth = pb_auths.Get(i);
|
||||
AuthInfo::AuthMethod method = ParseMethod(pb_auth.method());
|
||||
|
||||
switch(method) {
|
||||
case AuthInfo::kToken:
|
||||
case AuthInfo::kKerberos: {
|
||||
SaslMethod new_method;
|
||||
new_method.mechanism = pb_auth.mechanism();
|
||||
new_method.protocol = pb_auth.protocol();
|
||||
new_method.serverid = pb_auth.serverid();
|
||||
new_method.challenge = pb_auth.has_challenge() ?
|
||||
pb_auth.challenge() : "";
|
||||
resp_auths.push_back(new_method);
|
||||
}
|
||||
break;
|
||||
case AuthInfo::kSimple:
|
||||
simple_avail = true;
|
||||
break;
|
||||
case AuthInfo::kUnknownAuth:
|
||||
LOG_WARN(kRPC, << "Unknown auth method " << pb_auth.method() << "; ignoring");
|
||||
break;
|
||||
default:
|
||||
LOG_WARN(kRPC, << "Invalid auth type: " << method << "; ignoring");
|
||||
break;
|
||||
}
|
||||
} // for
|
||||
return simple_avail;
|
||||
} // extract_auths()
|
||||
|
||||
void SaslProtocol::ResetEngine() {
|
||||
#if defined USE_SASL
|
||||
#if defined USE_CYRUS_SASL
|
||||
sasl_engine_.reset(new CyrusSaslEngine());
|
||||
sasl_engine_.reset(new CySaslEngine());
|
||||
#elif defined USE_GSASL
|
||||
sasl_engine_.reset(new GSaslEngine());
|
||||
#else
|
||||
#error USE_SASL defined but no engine (USE_GSASL) defined
|
||||
#endif
|
||||
#endif
|
||||
return;
|
||||
} // Reset_Engine() method
|
||||
|
||||
void SaslProtocol::Negotiate(const hadoop::common::RpcSaslProto * response)
|
||||
{
|
||||
this->ResetEngine(); // get a new SaslEngine
|
||||
|
||||
if (auth_info_.getToken()) {
|
||||
sasl_engine_->setPasswordInfo(auth_info_.getToken().value().identifier,
|
||||
sasl_engine_->SetPasswordInfo(auth_info_.getToken().value().identifier,
|
||||
auth_info_.getToken().value().password);
|
||||
}
|
||||
sasl_engine_->setKerberosInfo(auth_info_.getUser()); // HDFS-10451 will look up principal by username
|
||||
sasl_engine_->SetKerberosInfo(auth_info_.getUser()); // TODO: map to principal?
|
||||
|
||||
// Copy the response's auths list to an array of SaslMethod objects.
|
||||
// SaslEngine shouldn't need to know about the protobuf classes.
|
||||
std::vector<SaslMethod> resp_auths;
|
||||
bool simple_available = extract_auths(resp_auths, response);
|
||||
bool mech_chosen = sasl_engine_->ChooseMech(resp_auths);
|
||||
|
||||
auto auths = response->auths();
|
||||
for (int i = 0; i < auths.size(); ++i) {
|
||||
auto auth = auths.Get(i);
|
||||
AuthInfo::AuthMethod method = ParseMethod(auth.method());
|
||||
if (mech_chosen) {
|
||||
|
||||
switch(method) {
|
||||
case AuthInfo::kToken:
|
||||
case AuthInfo::kKerberos: {
|
||||
SaslMethod new_method;
|
||||
new_method.mechanism = auth.mechanism();
|
||||
new_method.protocol = auth.protocol();
|
||||
new_method.serverid = auth.serverid();
|
||||
new_method.data = const_cast<RpcSaslProto_SaslAuth *>(&response->auths().Get(i));
|
||||
protocols.push_back(new_method);
|
||||
}
|
||||
break;
|
||||
case AuthInfo::kSimple:
|
||||
simple_available = true;
|
||||
break;
|
||||
case AuthInfo::kUnknownAuth:
|
||||
LOG_WARN(kRPC, << "Unknown auth method " << auth.method() << "; ignoring");
|
||||
break;
|
||||
default:
|
||||
LOG_WARN(kRPC, << "Invalid auth type: " << method << "; ignoring");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!protocols.empty()) {
|
||||
auto init = sasl_engine_->start(protocols);
|
||||
if (init.first.ok()) {
|
||||
auto chosen_auth = reinterpret_cast<RpcSaslProto_SaslAuth *>(init.second.data);
|
||||
|
||||
// Prepare initiate message
|
||||
RpcSaslProto initiate;
|
||||
initiate.set_state(RpcSaslProto_SaslState_INITIATE);
|
||||
RpcSaslProto_SaslAuth * respAuth = initiate.add_auths();
|
||||
respAuth->CopyFrom(*chosen_auth);
|
||||
|
||||
LOG_TRACE(kRPC, << "Using auth: " << chosen_auth->protocol() << "/" <<
|
||||
chosen_auth->mechanism() << "/" << chosen_auth->serverid());
|
||||
|
||||
std::string challenge = chosen_auth->has_challenge() ? chosen_auth->challenge() : "";
|
||||
auto sasl_challenge = sasl_engine_->step(challenge);
|
||||
|
||||
if (sasl_challenge.first.ok()) {
|
||||
if (!sasl_challenge.second.empty()) {
|
||||
initiate.set_token(sasl_challenge.second);
|
||||
}
|
||||
|
||||
std::shared_ptr<RpcSaslProto> return_msg = std::make_shared<RpcSaslProto>();
|
||||
SendSaslMessage(initiate);
|
||||
return;
|
||||
} else {
|
||||
AuthComplete(sasl_challenge.first, auth_info_);
|
||||
// Prepare an INITIATE message,
|
||||
// later on we'll send it to the hdfs server:
|
||||
auto start_result = sasl_engine_->Start();
|
||||
Status status = start_result.first;
|
||||
if (! status.ok()) {
|
||||
// start() failed, simple isn't avail,
|
||||
// so give up & stop authentication:
|
||||
AuthComplete(status, auth_info_);
|
||||
return;
|
||||
}
|
||||
} else if (!simple_available) {
|
||||
// If simple IS available, fall through to below
|
||||
AuthComplete(init.first, auth_info_);
|
||||
// token.second is a binary buffer, containing
|
||||
// client credentials that will prove the
|
||||
// client's identity to the application server.
|
||||
// Put the token into an INITIATE message:
|
||||
auto init = BuildInitMessage(start_result.second, response);
|
||||
|
||||
// If all is OK, send the INITIATE msg to the hdfs server;
|
||||
// Otherwise, if possible, fail over to simple authentication:
|
||||
status = init.first;
|
||||
if (status.ok()) {
|
||||
SendSaslMessage(init.second);
|
||||
return;
|
||||
}
|
||||
if (!simple_available) {
|
||||
// build_init_msg() failed, simple isn't avail,
|
||||
// so give up & stop authentication:
|
||||
AuthComplete(status, auth_info_);
|
||||
return;
|
||||
}
|
||||
// If simple IS available, fall through to below,
|
||||
// but without build_init_msg()'s failure-status.
|
||||
}
|
||||
|
||||
// There were no protocols, or the SaslEngine couldn't make one work
|
||||
// There were no resp_auths, or the SaslEngine couldn't make one work
|
||||
if (simple_available) {
|
||||
// Simple was the only one we could use. That's OK.
|
||||
AuthComplete(Status::OK(), auth_info_);
|
||||
return;
|
||||
} else {
|
||||
// We didn't understand any of the protocols; give back some information
|
||||
// We didn't understand any of the resp_auths;
|
||||
// Give back some information
|
||||
std::stringstream ss;
|
||||
ss << "Client cannot authenticate via: ";
|
||||
|
||||
for (int i = 0; i < auths.size(); ++i) {
|
||||
auto auth = auths.Get(i);
|
||||
ss << auth.mechanism() << ", ";
|
||||
auto pb_auths = response->auths();
|
||||
for (int i = 0; i < pb_auths.size(); ++i) {
|
||||
const RpcSaslProto_SaslAuth & pb_auth = pb_auths.Get(i);
|
||||
ss << pb_auth.mechanism() << ", ";
|
||||
}
|
||||
|
||||
AuthComplete(Status::Error(ss.str().c_str()), auth_info_);
|
||||
return;
|
||||
}
|
||||
}
|
||||
} // Negotiate() method
|
||||
|
||||
void SaslProtocol::Challenge(const hadoop::common::RpcSaslProto * challenge)
|
||||
{
|
||||
@ -223,7 +313,7 @@ void SaslProtocol::Challenge(const hadoop::common::RpcSaslProto * challenge)
|
||||
response.set_state(RpcSaslProto_SaslState_RESPONSE);
|
||||
|
||||
std::string challenge_token = challenge->has_token() ? challenge->token() : "";
|
||||
auto sasl_response = sasl_engine_->step(challenge_token);
|
||||
auto sasl_response = sasl_engine_->Step(challenge_token);
|
||||
|
||||
if (sasl_response.first.ok()) {
|
||||
response.set_token(sasl_response.second);
|
||||
@ -234,7 +324,7 @@ void SaslProtocol::Challenge(const hadoop::common::RpcSaslProto * challenge)
|
||||
AuthComplete(sasl_response.first, auth_info_);
|
||||
return;
|
||||
}
|
||||
}
|
||||
} // Challenge() method
|
||||
|
||||
bool SaslProtocol::SendSaslMessage(RpcSaslProto & message)
|
||||
{
|
||||
@ -256,8 +346,9 @@ bool SaslProtocol::SendSaslMessage(RpcSaslProto & message)
|
||||
} );
|
||||
|
||||
return true;
|
||||
}
|
||||
} // SendSaslMessage() method
|
||||
|
||||
// AuthComplete(): stop the auth effort, successful ot not:
|
||||
bool SaslProtocol::AuthComplete(const Status & status, const AuthInfo & auth_info)
|
||||
{
|
||||
assert(lock_held(sasl_state_lock_)); // Must be holding lock before calling
|
||||
@ -270,15 +361,11 @@ bool SaslProtocol::AuthComplete(const Status & status, const AuthInfo & auth_inf
|
||||
return false;
|
||||
}
|
||||
|
||||
if (!status.ok()) {
|
||||
auth_info_.setMethod(AuthInfo::kAuthFailed);
|
||||
}
|
||||
|
||||
LOG_TRACE(kRPC, << "AuthComplete: " << status.ToString());
|
||||
LOG_TRACE(kRPC, << "Received SASL response" << status.ToString());
|
||||
connection->AuthComplete(status, auth_info);
|
||||
|
||||
return true;
|
||||
}
|
||||
} // AuthComplete() method
|
||||
|
||||
void SaslProtocol::OnServerResponse(const Status & status, const hadoop::common::RpcSaslProto * response)
|
||||
{
|
||||
@ -295,7 +382,7 @@ void SaslProtocol::OnServerResponse(const Status & status, const hadoop::common:
|
||||
break;
|
||||
case RpcSaslProto_SaslState_SUCCESS:
|
||||
if (sasl_engine_) {
|
||||
sasl_engine_->finish();
|
||||
sasl_engine_->Finish();
|
||||
}
|
||||
AuthComplete(Status::OK(), auth_info_);
|
||||
break;
|
||||
@ -314,7 +401,6 @@ void SaslProtocol::OnServerResponse(const Status & status, const hadoop::common:
|
||||
} else {
|
||||
AuthComplete(status, auth_info_);
|
||||
}
|
||||
}
|
||||
} // OnServerResponse() method
|
||||
|
||||
|
||||
}
|
||||
} // namespace hdfs
|
||||
|
||||
@ -19,22 +19,23 @@
|
||||
#ifndef LIB_RPC_SASLPROTOCOL_H
|
||||
#define LIB_RPC_SASLPROTOCOL_H
|
||||
|
||||
#include "hdfspp/status.h"
|
||||
#include "common/auth_info.h"
|
||||
#include "common/libhdfs_events_impl.h"
|
||||
|
||||
#include <RpcHeader.pb.h>
|
||||
|
||||
#include <memory>
|
||||
#include <mutex>
|
||||
#include <functional>
|
||||
|
||||
#include <RpcHeader.pb.h>
|
||||
|
||||
#include "hdfspp/status.h"
|
||||
#include "common/auth_info.h"
|
||||
#include "common/libhdfs_events_impl.h"
|
||||
|
||||
namespace hdfs {
|
||||
|
||||
static constexpr const char * SASL_METHOD_NAME = "sasl message";
|
||||
|
||||
class RpcConnection;
|
||||
class SaslEngine;
|
||||
class SaslMethod;
|
||||
|
||||
class SaslProtocol : public std::enable_shared_from_this<SaslProtocol>
|
||||
{
|
||||
@ -48,8 +49,9 @@ public:
|
||||
|
||||
// Start the async authentication process. Must be called while holding the
|
||||
// connection lock, but all callbacks will occur outside of the connection lock
|
||||
void authenticate(std::function<void(const Status & status, const AuthInfo new_auth_info)> callback);
|
||||
void Authenticate(std::function<void(const Status & status, const AuthInfo new_auth_info)> callback);
|
||||
void OnServerResponse(const Status & status, const hadoop::common::RpcSaslProto * response);
|
||||
std::pair<Status, hadoop::common::RpcSaslProto> BuildInitMessage( std::string & token, const hadoop::common::RpcSaslProto * negotiate_msg);
|
||||
private:
|
||||
enum State {
|
||||
kUnstarted,
|
||||
@ -72,10 +74,12 @@ private:
|
||||
bool SendSaslMessage(hadoop::common::RpcSaslProto & message);
|
||||
bool AuthComplete(const Status & status, const AuthInfo & auth_info);
|
||||
|
||||
void ResetEngine();
|
||||
void Negotiate(const hadoop::common::RpcSaslProto * response);
|
||||
void Challenge(const hadoop::common::RpcSaslProto * response);
|
||||
};
|
||||
|
||||
}
|
||||
}; // class SaslProtocol
|
||||
|
||||
} // namespace hdfs
|
||||
|
||||
#endif /* LIB_RPC_SASLPROTOCOL_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user