added SHA512 password encryption

Author: Dmitriy Nabok

src/ucentral-client/Makefile

@@ -19,7 +19,7 @@ platform/plat.a:
 
 ucentral-client: ucentral-client.o proto.o platform/plat.a \
 				 ucentral-json-parser.o ucentral-log.o router-utils.o base64.o
-	g++ -g -o $@ $^ -lcurl -lwebsockets -lcjson -lssl -lcrypto -lpthread -ljsoncpp -lresolv -lhiredis -ldbus-1
+	g++ -g -o $@ $^ -lcurl -lwebsockets -lcjson -lssl -lcrypto -lpthread -ljsoncpp -lresolv -lhiredis -ldbus-1 -lcrypt
 
 test:
 	@echo "========= running unit tests  ========="

src/ucentral-client/platform/larch-sonic/system.cpp

@@ -3,9 +3,15 @@
 #include <utils.hpp>
 
 #define UC_LOG_COMPONENT UC_LOG_COMPONENT_PLAT
-#include <ucentral-log.h>
+
+#define HASH_SHA512_TYPE "$6$"
+#define HASH_SHA512_SALT "c53N"
+#define HASH_SHA512_CONFIG HASH_SHA512_TYPE HASH_SHA512_SALT
+
+#include <crypt.h>
 #include <simppl/dispatcher.h>
 #include <simppl/stub.h>
+#include <ucentral-log.h>
 
 namespace larch {
 
@@ -15,13 +21,21 @@ void apply_system_password_config(struct plat_cfg *cfg)
     {
         try
         {
+            struct crypt_data cd;
+            memset(&cd, 0, sizeof cd);
+
+            std::string hash = crypt_r(cfg->unit.system.password, HASH_SHA512_CONFIG, &cd);
+
             simppl::dbus::Dispatcher disp{"bus:system"};
             simppl::dbus::Stub<org::SONiC::HostService::system_password> stub{
                 disp,
                 "org.SONiC.HostService",
                 "/org/SONiC/HostService/system_password"};
 
-            stub.update(cfg->unit.system.password);
+            const auto ret = stub.update(hash);
+            UC_LOG_INFO("system_password update returned %d: %s",
+                std::get<0>(ret),
+                std::get<1>(ret).c_str());
         }
         catch (const std::exception &ex)
         {