[reactos] 01/01: [NTDLL:CSR] Don't hardcode types in sizeofs; move local variables into code blocks where they are used.

[Hermès Bélusca-Maïto]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=e7744236893499fecb422…
commit e7744236893499fecb422a6f303657cdcd58d11e
Author:     Hermès Bélusca-Maïto <hermes.belusca-maito(a)reactos.org>
AuthorDate: Sun Oct 23 01:48:20 2022 +0200
Commit:     Hermès Bélusca-Maïto <hermes.belusca-maito(a)reactos.org>
CommitDate: Wed Oct 26 01:45:26 2022 +0200
    [NTDLL:CSR] Don't hardcode types in sizeofs; move local variables into code blocks
where they are used.
---
 dll/ntdll/csr/capture.c | 10 ++++------
 dll/ntdll/csr/connect.c | 35 +++++++++++++++++++----------------
 2 files changed, 23 insertions(+), 22 deletions(-)
diff --git a/dll/ntdll/csr/capture.c b/dll/ntdll/csr/capture.c
index 1a388d467a4..9252a521f0a 100644
--- a/dll/ntdll/csr/capture.c
+++ b/dll/ntdll/csr/capture.c
@@ -261,7 +261,7 @@ CsrCaptureMessageString(IN OUT PCSR_CAPTURE_BUFFER CaptureBuffer,
     /* Null-terminate the string if we don't take up the whole space */
     if (CapturedString->Length < CapturedString->MaximumLength)
-        CapturedString->Buffer[CapturedString->Length] = '\0';
+        CapturedString->Buffer[CapturedString->Length] = ANSI_NULL;
 }
 static VOID
@@ -277,11 +277,9 @@ CsrCaptureMessageUnicodeStringInPlace(IN OUT PCSR_CAPTURE_BUFFER
CaptureBuffer,
                             String->MaximumLength,
                             (PSTRING)String);
-    /* Null-terminate the string */
-    if (String->MaximumLength >= String->Length + sizeof(WCHAR))
-    {
-        String->Buffer[String->Length / sizeof(WCHAR)] = L'\0';
-    }
+    /* Null-terminate the string if we don't take up the whole space */
+    if (String->Length + sizeof(WCHAR) <= String->MaximumLength)
+        String->Buffer[String->Length / sizeof(WCHAR)] = UNICODE_NULL;
 }
 /*
diff --git a/dll/ntdll/csr/connect.c b/dll/ntdll/csr/connect.c
index f9d007b701f..98033274e44 100644
--- a/dll/ntdll/csr/connect.c
+++ b/dll/ntdll/csr/connect.c
@@ -49,7 +49,7 @@ CsrpConnectToServer(IN PWSTR ObjectDirectory)
     SID_IDENTIFIER_AUTHORITY NtSidAuthority = {SECURITY_NT_AUTHORITY};
     PSID SystemSid = NULL;
     CSR_API_CONNECTINFO ConnectionInfo;
-    ULONG ConnectionInfoLength = sizeof(CSR_API_CONNECTINFO);
+    ULONG ConnectionInfoLength = sizeof(ConnectionInfo);
     DPRINT("%s(%S)\n", __FUNCTION__, ObjectDirectory);
@@ -100,13 +100,13 @@ CsrpConnectToServer(IN PWSTR ObjectDirectory)
     }
     /* Set up the port view structures to match them with the section */
-    LpcWrite.Length = sizeof(PORT_VIEW);
+    LpcWrite.Length = sizeof(LpcWrite);
     LpcWrite.SectionHandle = CsrSectionHandle;
     LpcWrite.SectionOffset = 0;
     LpcWrite.ViewSize = CsrSectionViewSize.u.LowPart;
     LpcWrite.ViewBase = 0;
     LpcWrite.ViewRemoteBase = 0;
-    LpcRead.Length = sizeof(REMOTE_PORT_VIEW);
+    LpcRead.Length = sizeof(LpcRead);
     LpcRead.ViewSize = 0;
     LpcRead.ViewBase = 0;
@@ -202,12 +202,6 @@ CsrClientConnectToServer(IN PWSTR ObjectDirectory,
 {
     NTSTATUS Status;
     PIMAGE_NT_HEADERS NtHeader;
-    UNICODE_STRING CsrSrvName;
-    HANDLE hCsrSrv;
-    ANSI_STRING CsrServerRoutineName;
-    CSR_API_MESSAGE ApiMessage;
-    PCSR_CLIENT_CONNECT ClientConnect = &ApiMessage.Data.CsrClientConnect;
-    PCSR_CAPTURE_BUFFER CaptureBuffer;
     DPRINT("CsrClientConnectToServer: %lx %p\n", ServerId, ConnectionInfo);
@@ -241,8 +235,11 @@ CsrClientConnectToServer(IN PWSTR ObjectDirectory,
     /* Now we can check if we are inside or not */
     if (InsideCsrProcess)
     {
+        UNICODE_STRING CsrSrvName;
+        HANDLE hCsrSrv;
+        ANSI_STRING CsrServerRoutineName;
+
         /* We're inside, so let's find csrsrv */
-        DPRINT("Next-GEN CSRSS support\n");
         RtlInitUnicodeString(&CsrSrvName, L"csrsrv");
         Status = LdrGetDllHandle(NULL,
                                  NULL,
@@ -267,6 +264,10 @@ CsrClientConnectToServer(IN PWSTR ObjectDirectory,
     /* Now check if connection info is given */
     if (ConnectionInfo)
     {
+        CSR_API_MESSAGE ApiMessage;
+        PCSR_CLIENT_CONNECT ClientConnect = &ApiMessage.Data.CsrClientConnect;
+        PCSR_CAPTURE_BUFFER CaptureBuffer;
+
         /* Well, we're definitely in a client now */
         InsideCsrProcess = FALSE;
@@ -307,7 +308,7 @@ CsrClientConnectToServer(IN PWSTR ObjectDirectory,
         Status = CsrClientCallServer(&ApiMessage,
                                      CaptureBuffer,
                                      CSR_CREATE_API_NUMBER(CSRSRV_SERVERDLL_INDEX,
CsrpClientConnect),
-                                     sizeof(CSR_CLIENT_CONNECT));
+                                     sizeof(*ClientConnect));
         /* Copy the updated connection info data back into the user buffer */
         RtlMoveMemory(ConnectionInfo,
@@ -368,8 +369,6 @@ CsrClientCallServer(IN OUT PCSR_API_MESSAGE ApiMessage,
                     IN ULONG DataLength)
 {
     NTSTATUS Status;
-    ULONG PointerCount;
-    PULONG_PTR OffsetPointer;
     /* Make sure the length is valid */
     if (DataLength > (MAXSHORT - sizeof(CSR_API_MESSAGE)))
@@ -397,6 +396,9 @@ CsrClientCallServer(IN OUT PCSR_API_MESSAGE ApiMessage,
     /* Check if we are already inside a CSR Server */
     if (!InsideCsrProcess)
     {
+        ULONG PointerCount;
+        PULONG_PTR OffsetPointer;
+
         /* Check if we got a Capture Buffer */
         if (CaptureBuffer)
         {
@@ -471,12 +473,13 @@ CsrClientCallServer(IN OUT PCSR_API_MESSAGE ApiMessage,
     }
     else
     {
-        /* This is a server-to-server call. Save our CID and do a direct call. */
-        DPRINT("Next gen server-to-server call\n");
+        /* This is a server-to-server call */
+        DPRINT("Server-to-server call\n");
-        /* We check this equality inside CsrValidateMessageBuffer */
+        /* Save our CID; we check this equality inside CsrValidateMessageBuffer */
         ApiMessage->Header.ClientId = NtCurrentTeb()->ClientId;
+        /* Do a direct call */
         Status = CsrServerApiRoutine(&ApiMessage->Header,
                                      &ApiMessage->Header);