[host] app: implement stubs for platform specific guest information

host/include/interface/platform.h

@@ -21,6 +21,7 @@
 #pragma once
 
 #include <stdbool.h>
+#include "common/KVMFR.h"
 
 // exit code for user opted to exit looking-glass-host
 #define LG_HOST_EXIT_USER    0x10
@@ -46,3 +47,13 @@ void os_showMessage(const char * caption, const char * msg);
 bool os_blockScreensaver();
 bool os_hasSetCursorPos(void);
 void os_setCursorPos(int x, int y);
+
+// return the KVMFR OS type
+KVMFROS os_getKVMFRType(void);
+
+// returns the OS name & version if possible
+const char * os_getOSName(void);
+
+// returns the UUID that was given to the VM, this can be obtained from the
+// SMBIOS. Must return exactly 16 bytes or NULL.
+const uint8_t * os_getUUID(void);

host/platform/Linux/src/platform.c

@@ -95,3 +95,20 @@ bool os_hasSetCursorPos(void)
 void os_setCursorPos(int x, int y)
 {
 }
+
+KVMFROS os_getKVMFRType(void)
+{
+  return KVMFR_OS_LINUX;
+}
+
+const char * os_getOSName(void)
+{
+  //TODO
+  return NULL;
+}
+
+const uint8_t * os_getUUID(void)
+{
+  //TODO
+  return NULL;
+}

host/platform/Windows/src/platform.c

@@ -589,3 +589,20 @@ void os_setCursorPos(int x, int y)
 {
   SetCursorPos(x, y);
 }
+
+KVMFROS os_getKVMFRType(void)
+{
+  return KVMFR_OS_WINDOWS;
+}
+
+const char * os_getOSName(void)
+{
+  //TODO
+  return NULL;
+}
+
+const uint8_t * os_getUUID(void)
+{
+  //TODO
+  return NULL;
+}

host/src/app.c

@@ -604,6 +604,10 @@ static bool newKVMFRData(KVMFRUserData * dst)
 
     strncpy(vmInfo->capture, app.iface->shortName, sizeof(vmInfo->capture) - 1);
 
+    const uint8_t * uuid = os_getUUID();
+    if (uuid)
+      memcpy(vmInfo->uuid, uuid, 16);
+
     char * model = allocUserData(dst, 1024, false);
     if (!model)
       return false;
@@ -630,8 +634,12 @@ static bool newKVMFRData(KVMFRUserData * dst)
     record->type = KVMFR_RECORD_OSINFO;
     record->size = sizeof(*osInfo);
 
-    osInfo->os = KVMFR_OS_OTHER;
-    if (!appendBuffer(dst, record, "Unknown", 8))
+    osInfo->os = os_getKVMFRType();
+    const char * osName = os_getOSName();
+    if (!osName)
+      osName = "";
+
+    if (!appendBuffer(dst, record, osName, strlen(osName) + 1))
       return false;
   }