1 files changed, 167 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/in_windows_exporter_metrics/we_util.c b/src/fluent-bit/plugins/in_windows_exporter_metrics/we_util.c
new file mode 100644
index 000000000..625872709
--- /dev/null
+++ b/src/fluent-bit/plugins/in_windows_exporter_metrics/we_util.c
@@ -0,0 +1,167 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2019-2021 The Fluent Bit Authors
+ *  Copyright (C) 2015-2018 Treasure Data Inc.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include <fluent-bit/flb_sds.h>
+
+#include "we.h"
+#include "we_util.h"
+
+int we_get_windows_version(double *version_number)
+{
+    LSTATUS result;
+    DWORD   data_size;
+    HKEY    key_handle;
+    char    version_text[8];
+
+    data_size = sizeof(version_text);
+
+    result = RegOpenKeyExA(HKEY_LOCAL_MACHINE,
+                           WE_VERSION_REGISTRY_PATH,
+                           0,
+                           KEY_READ,
+                           &key_handle);
+
+    if (result != ERROR_SUCCESS) {
+        return FLB_FALSE;
+    }
+
+    result = RegQueryValueExA(key_handle,
+                              WE_VERSION_KEY_NAME,
+                              NULL,
+                              0,
+                              version_text,
+                              &data_size);
+
+    RegCloseKey(key_handle);
+
+    if (result != ERROR_SUCCESS)
+    {
+        return FLB_FALSE;
+    }
+
+    *version_number = strtod(version_text, NULL);
+
+    return FLB_TRUE;
+}
+
+void we_hexdump(uint8_t *buffer, size_t buffer_length, size_t line_length) {
+    char  *printable_line;
+    size_t buffer_index;
+    size_t filler_index;
+
+    if (40 < line_length)
+    {
+        line_length = 40;
+    }
+
+    printable_line = malloc(line_length + 1);
+
+    if (NULL == printable_line)
+    {
+        printf("Alloca returned NULL\n");
+
+        return;
+    }
+
+    memset(printable_line, '\0', line_length + 1);
+
+    for (buffer_index = 0 ; buffer_index < buffer_length ; buffer_index++) {
+        if (0 != buffer_index &&
+            0 == (buffer_index % line_length)) {
+
+            printf("%s\n", printable_line);
+
+            memset(printable_line, '\0', line_length + 1);
+        }
+
+        if (0 != isprint(buffer[buffer_index])) {
+            printable_line[(buffer_index % line_length)] = buffer[buffer_index];
+        }
+        else {
+            printable_line[(buffer_index % line_length)] = '.';
+        }
+
+        printf("%02X ", buffer[buffer_index]);
+    }
+
+    if (0 != buffer_index &&
+        0 != (buffer_index % line_length)) {
+
+        for (filler_index = 0 ;
+             filler_index < (line_length - (buffer_index % line_length)) ;
+             filler_index++) {
+            printf("   ");
+        }
+
+        printf("%s\n", printable_line);
+
+        memset(printable_line, '.', line_length);
+    }
+
+    free(printable_line);
+}
+
+char* we_convert_wstr(wchar_t *wstr, UINT codePage)
+{
+    int size = 0;
+    char *buf = NULL;
+
+    size = WideCharToMultiByte(codePage, 0, wstr, -1, NULL, 0, NULL, NULL);
+    if (size == 0) {
+        return NULL;
+    }
+
+    buf = flb_calloc(1, size);
+    if (buf == NULL) {
+        flb_errno();
+        return NULL;
+    }
+    size = WideCharToMultiByte(codePage, 0, wstr, -1, buf, size, NULL, NULL);
+    if (size == 0) {
+        flb_free(buf);
+        return NULL;
+    }
+
+    return buf;
+}
+
+wchar_t* we_convert_str(char *str)
+{
+    int size = 0;
+    wchar_t *buf = NULL;
+
+    size = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
+    if (size == 0) {
+        return NULL;
+    }
+
+    buf = flb_calloc(1, sizeof(PWSTR) * size);
+    if (buf == NULL) {
+        flb_errno();
+        return NULL;
+    }
+    size = MultiByteToWideChar(CP_UTF8, 0, str, -1, buf, size);
+    if (size == 0) {
+        flb_free(buf);
+        return NULL;
+    }
+
+    return buf;
+}