1 files changed, 78 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/string/strstr.cpp b/src/VBox/Runtime/common/string/strstr.cpp
new file mode 100644
index 00000000..97825f37
--- /dev/null
+++ b/src/VBox/Runtime/common/string/strstr.cpp
@@ -0,0 +1,78 @@
+/* $Id: strstr.cpp $ */
+/** @file
+ * IPRT - CRT Strings, strstr().
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * 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, in version 3 of the
+ * License.
+ *
+ * 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, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "internal/iprt.h"
+#include <iprt/string.h>
+
+
+/**
+ * Find the location of @a pszSubStr in @a pszString.
+ *
+ * @returns Pointer to first occurence of the substring in @a pszString, NULL if
+ *          not found.
+ * @param   pszString   Zero terminated string to search.
+ * @param   pszSubStr   The substring to search for.
+ */
+#undef strstr
+char *RT_NOCRT(strstr)(const char *pszString, const char *pszSubStr)
+{
+    char const  ch0Sub = *pszSubStr;
+    if (ch0Sub != '\0')
+    {
+        pszString = strchr(pszString, ch0Sub);
+        if (pszString)
+        {
+            size_t const cchSubStr = strlen(pszSubStr);
+            do
+            {
+                if (strncmp(pszString, pszSubStr, cchSubStr) == 0)
+                    return (char *)pszString;
+                if (ch0Sub)
+                    pszString = strchr(pszString + 1, ch0Sub);
+                else
+                    break;
+            } while (pszString != NULL);
+        }
+        return NULL;
+    }
+    return (char *)pszString;
+}
+RT_ALIAS_AND_EXPORT_NOCRT_SYMBOL(strstr);
+