485 lines
12 KiB
C
485 lines
12 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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dynupdt.c
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Abstract:
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Dynamic Update support for text setup. Portions moved from i386\win31upg.c
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Author:
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Ovidiu Temereanca (ovidiut) 20-Aug-2000
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Revision History:
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--*/
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#include "spprecmp.h"
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#pragma hdrstop
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//
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// Macros
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//
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#define MAX_SECTION_NAME_LENGTH 14
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#define UPDATES_SECTION_NAME L"updates"
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#define UNIPROC_SECTION_NAME L"uniproc"
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//
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// Globals
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//
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HANDLE g_UpdatesCabHandle = NULL;
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PVOID g_UpdatesSifHandle = NULL;
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HANDLE g_UniprocCabHandle = NULL;
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PVOID g_UniprocSifHandle = NULL;
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WCHAR
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SpExtractDriveLetter(
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IN PWSTR PathComponent
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);
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BOOLEAN
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SpInitAlternateSource (
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VOID
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)
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{
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PWSTR p;
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NTSTATUS Status;
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ULONG ErrorLine;
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WCHAR updatesCab[MAX_PATH];
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WCHAR updatesSif[MAX_PATH];
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WCHAR updatesSifSection[MAX_SECTION_NAME_LENGTH];
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WCHAR uniprocCab[MAX_PATH];
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WCHAR uniprocSif[MAX_PATH];
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WCHAR uniprocSifSection[MAX_SECTION_NAME_LENGTH];
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BOOLEAN bUniprocCab = FALSE;
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BOOLEAN b = FALSE;
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//
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// look if section [SetupParams] has an UpdatedSources key
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//
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p = SpGetSectionKeyIndex (WinntSifHandle, SIF_SETUPPARAMS, SIF_UPDATEDSOURCES, 0);
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if (!p) {
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return FALSE;
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}
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p = SpNtPathFromDosPath (p);
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if (!p) {
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goto exit;
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}
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wcscpy (updatesCab, p);
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wcscpy (updatesSif, updatesCab);
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p = wcsrchr (updatesSif, L'.');
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if (!p) {
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p = wcsrchr (updatesSif, 0);
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}
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wcscpy (p, L".sif");
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//
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// load the sif
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//
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Status = SpLoadSetupTextFile (
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updatesSif,
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NULL, // No image already in memory
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0, // Image size is empty
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&g_UpdatesSifHandle,
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&ErrorLine,
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FALSE,
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FALSE
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);
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if (!NT_SUCCESS (Status)) {
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KdPrintEx((
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DPFLTR_SETUP_ID,
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DPFLTR_ERROR_LEVEL,
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"SETUP: SpInitAlternateSource: Unable to read %ws. ErrorLine = %ld, Status = %lx \n",
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updatesSif,
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ErrorLine,
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Status
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));
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goto exit;
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}
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wcscpy (updatesSifSection, UPDATES_SECTION_NAME);
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if (!SpSearchTextFileSection (g_UpdatesSifHandle, updatesSifSection) ||
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SpCountLinesInSection (g_UpdatesSifHandle, updatesSifSection) == 0) {
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KdPrintEx((
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DPFLTR_SETUP_ID,
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DPFLTR_ERROR_LEVEL,
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"SETUP: SpInitAlternateSource: Section [%ws] not found or empty in %ws.\n",
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updatesSifSection,
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updatesSif
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));
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goto exit;
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}
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p = SpGetSectionKeyIndex (WinntSifHandle, SIF_SETUPPARAMS, SIF_UPDATEDSOURCES, 1);
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if (p && *p) {
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p = SpNtPathFromDosPath (p);
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if (!p) {
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goto exit;
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}
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wcscpy (uniprocCab, p);
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wcscpy (uniprocSif, uniprocCab);
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p = wcsrchr (uniprocSif, L'.');
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if (!p) {
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p = wcsstr (uniprocSif, 0);
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}
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wcscpy (p, L".sif");
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//
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// load the sif
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//
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Status = SpLoadSetupTextFile (
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uniprocSif,
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NULL, // No image already in memory
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0, // Image size is empty
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&g_UniprocSifHandle,
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&ErrorLine,
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FALSE,
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FALSE
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);
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if (!NT_SUCCESS (Status)) {
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KdPrintEx((
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DPFLTR_SETUP_ID,
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DPFLTR_ERROR_LEVEL,
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"SETUP: SpInitAlternateSource: Unable to read %ws. ErrorLine = %ld, Status = %lx \n",
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uniprocSif,
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ErrorLine,
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Status
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));
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goto exit;
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}
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wcscpy (uniprocSifSection, UNIPROC_SECTION_NAME);
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if (!SpSearchTextFileSection (g_UniprocSifHandle, uniprocSifSection) ||
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SpCountLinesInSection (g_UniprocSifHandle, uniprocSifSection) == 0) {
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KdPrintEx((
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DPFLTR_SETUP_ID,
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DPFLTR_ERROR_LEVEL,
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"SETUP: SpInitAlternateSource: Section [%ws] not found or empty in %ws.\n",
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uniprocSifSection,
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uniprocSif
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));
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goto exit;
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}
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bUniprocCab = TRUE;
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}
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_INFO_LEVEL, "SETUP: SpInitAlternateSource: Using alternate sources: %ws\n", updatesCab));
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b = SpInitializeUpdatesCab (
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updatesCab,
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updatesSifSection,
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bUniprocCab ? uniprocCab : NULL,
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bUniprocCab ? uniprocSifSection : NULL
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);
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exit:
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if (!b) {
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SpUninitAlternateSource ();
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}
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return b;
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}
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VOID
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SpUninitAlternateSource (
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VOID
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)
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{
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if (g_UpdatesSifHandle) {
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SpFreeTextFile (g_UpdatesSifHandle);
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g_UpdatesSifHandle = NULL;
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}
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if (g_UniprocSifHandle) {
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SpFreeTextFile (g_UniprocSifHandle);
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g_UniprocSifHandle = NULL;
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}
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}
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BOOLEAN
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SpInitializeUpdatesCab (
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IN PWSTR UpdatesCab,
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IN PWSTR UpdatesSifSection,
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IN PWSTR UniprocCab,
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IN PWSTR UniprocSifSection
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)
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{
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PWSTR CabFileSection;
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NTSTATUS Status;
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PWSTR DriverCabName, DriverCabPath;
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OBJECT_ATTRIBUTES Obja;
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UNICODE_STRING UnicodeString;
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IO_STATUS_BLOCK IoStatusBlock;
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CABDATA *MyCabData, *MyList = NULL;
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DWORD i;
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BOOLEAN b = TRUE;
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INIT_OBJA (&Obja, &UnicodeString, UpdatesCab);
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Status = ZwCreateFile (&g_UpdatesCabHandle,
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FILE_GENERIC_READ,
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&Obja,
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&IoStatusBlock,
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NULL,
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FILE_ATTRIBUTE_NORMAL,
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FILE_SHARE_READ,
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FILE_OPEN,
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0,
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NULL,
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0 );
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if (!NT_SUCCESS (Status)) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Unable to open cab file %ws. Status = %lx \n", UpdatesCab, Status));
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return FALSE;
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}
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//
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// create the list entry
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//
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MyCabData = SpMemAlloc (sizeof(CABDATA));
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MyCabData->CabName = SpDupStringW (UpdatesCab);
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MyCabData->CabHandle = g_UpdatesCabHandle;
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MyCabData->CabSectionName = SpDupStringW (UpdatesSifSection);
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MyCabData->CabInfHandle = g_UpdatesSifHandle;
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MyCabData->Next = MyList;
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MyList = MyCabData;
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if (UniprocCab) {
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INIT_OBJA (&Obja, &UnicodeString, UniprocCab);
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Status = ZwCreateFile (&g_UniprocCabHandle,
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FILE_GENERIC_READ,
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&Obja,
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&IoStatusBlock,
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NULL,
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FILE_ATTRIBUTE_NORMAL,
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FILE_SHARE_READ,
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FILE_OPEN,
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0,
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NULL,
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0 );
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if (!NT_SUCCESS (Status)) {
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KdPrintEx((DPFLTR_SETUP_ID, DPFLTR_ERROR_LEVEL, "SETUP: Unable to open cab file %ws. Status = %lx \n", UniprocCab, Status));
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b = FALSE;
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goto exit;
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}
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//
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// create the list entry
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//
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MyCabData = SpMemAlloc (sizeof(CABDATA));
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MyCabData->CabName = SpDupStringW (UniprocCab);
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MyCabData->CabHandle = g_UniprocCabHandle;
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MyCabData->CabSectionName = SpDupStringW (UniprocSifSection);
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MyCabData->CabInfHandle = g_UniprocSifHandle;
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MyCabData->Next = MyList;
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MyList = MyCabData;
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}
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exit:
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if (b) {
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//
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// insert it at the beginning
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//
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while (MyList && MyList->Next) {
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MyList = MyList->Next;
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}
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if (MyList) {
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MyList->Next = CabData;
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CabData = MyList;
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}
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} else {
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//
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// destroy MyList
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//
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while (MyList) {
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MyCabData = MyList->Next;
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MyList = MyCabData;
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SpMemFree (MyCabData->CabName);
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SpMemFree (MyCabData->CabSectionName);
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SpMemFree (MyCabData);
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}
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}
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return b;
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}
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PWSTR
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SpNtPathFromDosPath (
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IN PWSTR DosPath
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)
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{
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PDISK_REGION region;
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WCHAR drive[_MAX_DRIVE];
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WCHAR dir[_MAX_DIR];
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WCHAR fname[_MAX_FNAME];
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WCHAR ext[_MAX_EXT];
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PWSTR p;
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if (!DosPath) {
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return NULL;
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}
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region = SpPathComponentToRegion (DosPath);
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if (!region) {
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return NULL;
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}
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if (DosPath[2] != L'\\') {
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return NULL;
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}
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SpNtNameFromRegion (region, TemporaryBuffer, ELEMENT_COUNT(TemporaryBuffer), PartitionOrdinalCurrent);
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wcscat (TemporaryBuffer, DosPath + 2);
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return SpDupStringW (TemporaryBuffer);
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}
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PDISK_REGION
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SpPathComponentToRegion(
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IN PWSTR PathComponent
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)
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/*++
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Routine Description:
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This routine attempts to locate a region descriptor for a
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given DOS path component. If the DOS path component does
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not start with x:, then this fails.
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Arguments:
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PathComponent - supplies a component from the DOS search path,
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for which a region esacriptor is desired.
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Return Value:
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Pointer to disk region; NULL if none found with drive letter
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that starts the dos component.
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--*/
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{
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WCHAR c;
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ULONG disk;
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PDISK_REGION region;
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c = SpExtractDriveLetter(PathComponent);
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if(!c) {
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return(NULL);
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}
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for(disk=0; disk<HardDiskCount; disk++) {
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for(region=PartitionedDisks[disk].PrimaryDiskRegions; region; region=region->Next) {
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if(region->DriveLetter == c) {
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ASSERT(region->PartitionedSpace);
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return(region);
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}
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}
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//
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// Do not see extended partition on PC98.
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//
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for(region=PartitionedDisks[disk].ExtendedDiskRegions; region; region=region->Next) {
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if(region->DriveLetter == c) {
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ASSERT(region->PartitionedSpace);
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return(region);
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}
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}
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}
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return(NULL);
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}
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WCHAR
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SpExtractDriveLetter(
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|
|
IN PWSTR PathComponent
|
||
|
|
)
|
||
|
|
{
|
||
|
|
WCHAR c;
|
||
|
|
|
||
|
|
if((wcslen(PathComponent) >= 2) && (PathComponent[1] == L':')) {
|
||
|
|
|
||
|
|
c = RtlUpcaseUnicodeChar(PathComponent[0]);
|
||
|
|
if((c >= L'A') && (c <= L'Z')) {
|
||
|
|
return(c);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
PWSTR
|
||
|
|
SpGetDynamicUpdateBootDriverPath(
|
||
|
|
IN PWSTR NtBootPath,
|
||
|
|
IN PWSTR NtBootDir,
|
||
|
|
IN PVOID InfHandle
|
||
|
|
)
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Gets the dynamic update boot driver directory's root
|
||
|
|
path.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
NtBootPath - Boot path in NT namespace
|
||
|
|
|
||
|
|
NtBootDir - Boot directory under boot path (like $WIN_NT$.~BT)
|
||
|
|
|
||
|
|
InfHandle - Winnt.sif handle
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
Returns the dynamic update boot driver root path if successful
|
||
|
|
otherwise returns NULL
|
||
|
|
|
||
|
|
--*/
|
||
|
|
{
|
||
|
|
PWSTR DriverDir = NULL;
|
||
|
|
|
||
|
|
if (NtBootPath && NtBootDir && InfHandle) {
|
||
|
|
PWSTR Present = SpGetSectionKeyIndex(InfHandle,
|
||
|
|
WINNT_SETUPPARAMS_W,
|
||
|
|
WINNT_SP_DYNUPDTBOOTDRIVERPRESENT_W,
|
||
|
|
0);
|
||
|
|
|
||
|
|
PWSTR Dir = SpGetSectionKeyIndex(InfHandle,
|
||
|
|
WINNT_SETUPPARAMS_W,
|
||
|
|
WINNT_SP_DYNUPDTBOOTDRIVERROOT_W,
|
||
|
|
0);
|
||
|
|
|
||
|
|
if (Dir && Present && !_wcsicmp(Present, L"yes")) {
|
||
|
|
WCHAR Buffer[MAX_PATH];
|
||
|
|
|
||
|
|
wcscpy(Buffer, NtBootPath);
|
||
|
|
SpConcatenatePaths(Buffer, NtBootDir);
|
||
|
|
|
||
|
|
//
|
||
|
|
// NOTE : Currently ignore boot driver root path
|
||
|
|
//
|
||
|
|
// SpConcatenatePaths(Buffer, Dir);
|
||
|
|
|
||
|
|
DriverDir = SpDupStringW(Buffer);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return DriverDir;
|
||
|
|
}
|
||
|
|
|