From 8295f66320728efe85bd49cde8fd78201e563a0f Mon Sep 17 00:00:00 2001
From: Carter Li <zhangsongcui3371@sina.com>
Date: Thu, 26 Sep 2024 10:39:03 +0800
Subject: [PATCH] TPM (FreeBSD): add support

---
 CMakeLists.txt              |  2 +-
 src/detection/tpm/tpm_bsd.c | 17 +++++++++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)
 create mode 100644 src/detection/tpm/tpm_bsd.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 46c656957..c959e5ab3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -641,7 +641,7 @@ elseif(FreeBSD)
         src/detection/terminalshell/terminalshell_linux.c
         src/detection/terminalsize/terminalsize_linux.c
         src/detection/theme/theme_linux.c
-        src/detection/tpm/tpm_nosupport.c
+        src/detection/tpm/tpm_bsd.c
         src/detection/uptime/uptime_bsd.c
         src/detection/users/users_linux.c
         src/detection/wallpaper/wallpaper_linux.c
diff --git a/src/detection/tpm/tpm_bsd.c b/src/detection/tpm/tpm_bsd.c
new file mode 100644
index 000000000..ffaf0009b
--- /dev/null
+++ b/src/detection/tpm/tpm_bsd.c
@@ -0,0 +1,17 @@
+#include "tpm.h"
+#include "common/sysctl.h"
+
+const char* ffDetectTPM(FFTPMResult* result)
+{
+    if (ffSysctlGetString("dev.tpmcrb.0.%desc", &result->description) != NULL)
+        return "TPM device is not found or TPM kernel module is not loaded";
+
+    if (ffStrbufContainS(&result->description, "2.0"))
+        ffStrbufSetStatic(&result->version, "2.0");
+    else if (ffStrbufContainS(&result->description, "1.2"))
+        ffStrbufSetStatic(&result->version, "1.2");
+    else
+        ffStrbufSetStatic(&result->version, "unknown");
+
+    return "Not supported on this platform";
+}