RtlValidateUnicodeString.c

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/*
 * PROJECT:     ReactOS API Tests
 * LICENSE:     GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
 * PURPOSE:     Test for RtlValidateUnicodeString
 * COPYRIGHT:   Copyright 2020 Hermes Belusca-Maito
 */
 
#include "precomp.h"
 
START_TEST(RtlValidateUnicodeString)
{
    NTSTATUS Status;
    UNICODE_STRING String;
    UNICODE_STRING ValidString = RTL_CONSTANT_STRING(L"My Wild String!");
 
    /* Start with a valid Unicode string */
    String = ValidString;
 
    /* Non-zero flags are unsupported! */
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_SUCCESS, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(1, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(0xdeadbeef, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    /* Empty string is allowed. Test also the flags. */
    RtlInitEmptyUnicodeString(&String, NULL, 0);
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_SUCCESS, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(1, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(0xdeadbeef, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    // With a non-NULL but empty buffer, and zero lengths.
    RtlInitEmptyUnicodeString(&String, L"", 0);
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_SUCCESS, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(1, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(0xdeadbeef, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    // With a non-NULL but empty buffer, and zero Length, non-zero MaximumLength.
    RtlInitEmptyUnicodeString(&String, L"", sizeof(WCHAR));
    String.Length = 0;
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_SUCCESS, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(1, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(0xdeadbeef, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    /* NULL pointer is also allowed! Test also the flags. */
    Status = RtlValidateUnicodeString(0, NULL);
    ok(Status == STATUS_SUCCESS, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(1, NULL);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
    Status = RtlValidateUnicodeString(0xdeadbeef, NULL);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
 
    /*
     * Now test invalid strings.
     */
 
    // NULL buffer but non-zero lengths.
    String = ValidString;
    String.Buffer = NULL;
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    // NULL buffer, zero Length, non-zero MaximumLength.
    String = ValidString;
    String.Buffer = NULL;
    String.Length = 0;
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    // NULL buffer, non-zero Length, zero MaximumLength
    // (tests also the case Length > MaximumLength that must fail).
    String = ValidString;
    String.Buffer = NULL;
    String.MaximumLength = 0;
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    // Non-NULL buffer, non-zero Length, zero MaximumLength.
    String = ValidString;
    String.MaximumLength = 0;
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    /* Non-NULL buffer, odd lengths */
 
    String = ValidString;
    String.Length--; // Length was already >= 2 so it remains > 0.
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
 
    String.MaximumLength--; // MaximumLength was already >= 2 so it remains > 0.
    Status = RtlValidateUnicodeString(0, &String);
    ok(Status == STATUS_INVALID_PARAMETER, "Status = 0x%lx\n", Status);
}