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[USETUP] Support a custom way to extract files for cabinet files

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This will be used to extract files from cabinet to memory, instead of
writing them to disk.
This commit is contained in:
Hervé Poussineau 2019-05-13 23:28:19 +02:00
parent 0d51c71ed7
commit 04ec14e23e
3 changed files with 147 additions and 124 deletions
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20
base/setup/usetup/spapisup/cabinet.c
View file

@ -1018,6 +1018,18 @@ CabinetExtractFile(
DPRINT("Extracting file at uncompressed offset (0x%X) Size (%d bytes)\n",
(UINT)Search->File->FileOffset, (UINT)Search->File->FileSize);
if (CabinetContext->CreateFileHandler)
{
/* Call create context */
CurrentDestBuffer = CabinetContext->CreateFileHandler(CabinetContext, Search->File->FileSize);
if (!CurrentDestBuffer)
{
DPRINT1("CreateFileHandler() failed\n");
return CAB_STATUS_CANNOT_CREATE;
}
}
else
{
RtlInitAnsiString(&AnsiString, Search->File->FileName);
wcscpy(DestName, CabinetContext->DestPath);
UnicodeString.MaximumLength = sizeof(DestName) - wcslen(DestName) * sizeof(WCHAR);
@ -1146,6 +1158,7 @@ CabinetExtractFile(
}
SetAttributesOnFile(Search->File, DestFile);
}
/* Call extract event handler */
if (CabinetContext->ExtractHandler != NULL)
@ -1250,12 +1263,15 @@ CabinetExtractFile(
Status = CAB_STATUS_SUCCESS;
UnmapDestFile:
if (!CabinetContext->CreateFileHandler)
NtUnmapViewOfSection(NtCurrentProcess(), DestFileBuffer);
CloseDestFileSection:
if (!CabinetContext->CreateFileHandler)
NtClose(DestFileSection);
CloseDestFile:
if (!CabinetContext->CreateFileHandler)
NtClose(DestFile);
return Status;
@ -1316,11 +1332,13 @@ CabinetSetEventHandlers(
IN PCABINET_CONTEXT CabinetContext,
IN PCABINET_OVERWRITE Overwrite,
IN PCABINET_EXTRACT Extract,
IN PCABINET_DISK_CHANGE DiskChange)
IN PCABINET_DISK_CHANGE DiskChange,
IN PCABINET_CREATE_FILE CreateFile)
{
CabinetContext->OverwriteHandler = Overwrite;
CabinetContext->ExtractHandler = Extract;
CabinetContext->DiskChangeHandler = DiskChange;
CabinetContext->CreateFileHandler = CreateFile;
}
/*

7
base/setup/usetup/spapisup/cabinet.h
View file

@ -65,6 +65,9 @@ typedef VOID (*PCABINET_DISK_CHANGE)(
IN PCWSTR CabinetName,
IN PCWSTR DiskLabel);
typedef PVOID (*PCABINET_CREATE_FILE)(
IN struct _CABINET_CONTEXT* CabinetContext,
IN ULONG FileSize);
/* Classes */
@ -106,6 +109,7 @@ typedef struct _CABINET_CONTEXT
PCABINET_OVERWRITE OverwriteHandler;
PCABINET_EXTRACT ExtractHandler;
PCABINET_DISK_CHANGE DiskChangeHandler;
PCABINET_CREATE_FILE CreateFileHandler;
PVOID CabinetReservedArea;
} CABINET_CONTEXT, *PCABINET_CONTEXT;
@ -204,7 +208,8 @@ CabinetSetEventHandlers(
IN PCABINET_CONTEXT CabinetContext,
IN PCABINET_OVERWRITE Overwrite,
IN PCABINET_EXTRACT Extract,
IN PCABINET_DISK_CHANGE DiskChange);
IN PCABINET_DISK_CHANGE DiskChange,
IN PCABINET_CREATE_FILE CreateFile);
/* Get pointer to cabinet reserved area. NULL if none */
PVOID

2
base/setup/usetup/spapisup/fileqsup.c
View file

@ -117,7 +117,7 @@ SetupExtractFile(
CabinetInitialize(&QueueHeader->CabinetContext);
CabinetSetEventHandlers(&QueueHeader->CabinetContext,
NULL, NULL, NULL);
NULL, NULL, NULL, NULL);
CabinetSetCabinetName(&QueueHeader->CabinetContext, CabinetFileName);
CabStatus = CabinetOpen(&QueueHeader->CabinetContext);