dumpcap: Include CPU info as hardware description in SHB

Add CPU info as hardware description in session header block when
using pcapng.

Use capture_comment from the capture_options structure when using
ring buffer.

Change-Id: I5e688fc2d6ab61de1f64ad9a8a96e6e39e8cf708
Reviewed-on: https://code.wireshark.org/review/17862
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>

1 files changed, 80 insertions, 0 deletions

diff --git a/wsutil/cpu_info.c b/wsutil/cpu_info.c
new file mode 100644
index 0000000000..9a3416d9ab
--- /dev/null
+++ b/wsutil/cpu_info.c
@@ -0,0 +1,80 @@
+/* cpu_info.c
+ * Routines to report CPU information
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <glib.h>
+
+#include <wsutil/ws_cpuid.h>
+#include <wsutil/cpu_info.h>
+
+/*
+ * Get the CPU info, and append it to the GString
+ */
+void
+get_cpu_info(GString *str)
+{
+    guint32 CPUInfo[4];
+    char CPUBrandString[0x40];
+    unsigned nExIds;
+
+    /* http://msdn.microsoft.com/en-us/library/hskdteyh(v=vs.100).aspx */
+
+    /* Calling __cpuid with 0x80000000 as the InfoType argument */
+    /* gets the number of valid extended IDs. */
+    if (!ws_cpuid(CPUInfo, 0x80000000))
+        return;
+
+    nExIds = CPUInfo[0];
+
+    if (nExIds<0x80000005)
+        return;
+
+    memset(CPUBrandString, 0, sizeof(CPUBrandString));
+
+    /* Interpret CPU brand string */
+    ws_cpuid(CPUInfo, 0x80000002);
+    memcpy(CPUBrandString, CPUInfo, sizeof(CPUInfo));
+    ws_cpuid(CPUInfo, 0x80000003);
+    memcpy(CPUBrandString + 16, CPUInfo, sizeof(CPUInfo));
+    ws_cpuid(CPUInfo, 0x80000004);
+    memcpy(CPUBrandString + 32, CPUInfo, sizeof(CPUInfo));
+
+    g_string_append_printf(str, "%s", CPUBrandString);
+
+    if (ws_cpuid_sse42())
+        g_string_append(str, " (with SSE4.2)");
+}
+
+/*
+ * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */