/* SfxSetup.c - 7z SFX Setup
2019-02-02 : Igor Pavlov : Public domain */
#include "Precomp.h"
#ifndef UNICODE
#define UNICODE
#endif
#ifndef _UNICODE
#define _UNICODE
#endif
#include <windows.h>
#include <shellapi.h>
#ifdef _CONSOLE
#include <stdio.h>
#endif
#include "7z.h"
#include "7zAlloc.h"
#include "7zCrc.h"
#include "7zFile.h"
#include "CpuArch.h"
#include "DllSecur.h"
#define k_EXE_ExtIndex 2
#define kInputBufSize ((size_t)1 << 18)
static const char * const kExts[] =
{
"bat"
, "cmd"
, "exe"
, "inf"
, "msi"
#ifdef UNDER_CE
, "cab"
#endif
, "html"
, "htm"
};
static const char * const kNames[] =
{
"setup"
, "install"
, "run"
, "start"
};
static unsigned FindExt(const wchar_t *s, unsigned *extLen)
{
unsigned len = (unsigned)wcslen(s);
unsigned i;
for (i = len; i > 0; i--)
{
if (s[i - 1] == '.')
{
*extLen = len - i;
return i - 1;
}
}
*extLen = 0;
return len;
}
#define MAKE_CHAR_UPPER(c) ((((c) >= 'a' && (c) <= 'z') ? (c) -= 0x20 : (c)))
static unsigned FindItem(const char * const *items, unsigned num, const wchar_t *s, unsigned len)
{
unsigned i;
for (i = 0; i < num; i++)
{
const char *item = items[i];
unsigned itemLen = (unsigned)strlen(item);
unsigned j;
if (len != itemLen)
continue;
for (j = 0; j < len; j++)
{
unsigned c = (Byte)item[j];
if (c != s[j] && MAKE_CHAR_UPPER(c) != s[j])
break;
}
if (j == len)
return i;
}
return i;
}
#ifdef _CONSOLE
static BOOL WINAPI HandlerRoutine(DWORD ctrlType)
{
UNUSED_VAR(ctrlType);
return TRUE;
}
#endif
static void PrintErrorMessage(const char *message)
{
#ifdef _CONSOLE
printf("\n7-Zip Error: %s\n", message);
#else
#ifdef UNDER_CE
WCHAR messageW[256 + 4];
unsigned i;
for (i = 0; i < 256 && message[i] != 0; i++)
messageW[i] = message[i];
messageW[i] = 0;
MessageBoxW(0, messageW, L"7-Zip Error", MB_ICONERROR);
#else
MessageBoxA(0, message, "7-Zip Error", MB_ICONERROR);
#endif
#endif
}
static WRes MyCreateDir(const WCHAR *name)
{
return CreateDirectoryW(name, NULL) ? 0 : GetLastError();
}
#ifdef UNDER_CE
#define kBufferSize (1 << 13)
#else
#define kBufferSize (1 << 15)
#endif
#define kSignatureSearchLimit (1 << 26)
static BoolInt FindSignature(CSzFile *stream, UInt64 *resPos)
{
Byte buf[kBufferSize];
size_t numPrevBytes = 0;
*resPos = 0;
for (;;)
{
size_t processed, pos;
if (*resPos > kSignatureSearchLimit)
return False;
processed = kBufferSize - numPrevBytes;
if (File_Read(stream, buf + numPrevBytes, &processed) != 0)
return False;
processed += numPrevBytes;
if (processed < k7zStartHeaderSize ||
(processed == k7zStartHeaderSize && numPrevBytes != 0))
return False;
processed -= k7zStartHeaderSize;
for (pos = 0; pos <= processed; pos++)
{
for (; pos <= processed && buf[pos] != '7'; pos++);
if (pos > processed)
break;
if (memcmp(buf + pos, k7zSignature, k7zSignatureSize) == 0)
if (CrcCalc(buf + pos + 12, 20) == GetUi32(buf + pos + 8))
{
*resPos += pos;
return True;
}
}
*resPos += processed;
numPrevBytes = k7zStartHeaderSize;
memmove(buf, buf + processed, k7zStartHeaderSize);
}
}
static BoolInt DoesFileOrDirExist(const WCHAR *path)
{
WIN32_FIND_DATAW fd;
HANDLE handle;
handle = FindFirstFileW(path, &fd);
if (handle == INVALID_HANDLE_VALUE)
return False;
FindClose(handle);
return True;
}
static WRes RemoveDirWithSubItems(WCHAR *path)
{
WIN32_FIND_DATAW fd;
HANDLE handle;
WRes res = 0;
size_t len = wcslen(path);
wcscpy(path + len, L"*");
handle = FindFirstFileW(path, &fd);
path[len] = L'\0';
if (handle == INVALID_HANDLE_VALUE)
return GetLastError();
for (;;)
{
if (wcscmp(fd.cFileName, L".") != 0 &&
wcscmp(fd.cFileName, L"..") != 0)
{
wcscpy(path + len, fd.cFileName);
if ((fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0)
{
wcscat(path, WSTRING_PATH_SEPARATOR);
res = RemoveDirWithSubItems(path);
}
else
{
SetFileAttributesW(path, 0);
if (DeleteFileW(path) == 0)
res = GetLastError();
}
if (res != 0)
break;
}
if (!FindNextFileW(handle, &fd))
{
res = GetLastError();
if (res == ERROR_NO_MORE_FILES)
res = 0;
break;
}
}
path[len] = L'\0';
FindClose(handle);
if (res == 0)
{
if (!RemoveDirectoryW(path))
res = GetLastError();
}
return res;
}
#ifdef _CONSOLE
int MY_CDECL main()
#else
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
#ifdef UNDER_CE
LPWSTR
#else
LPSTR
#endif
lpCmdLine, int nCmdShow)
#endif
{
CFileInStream archiveStream;
CLookToRead2 lookStream;
CSzArEx db;
SRes res = SZ_OK;
ISzAlloc allocImp;
ISzAlloc allocTempImp;
WCHAR sfxPath[MAX_PATH + 2];
WCHAR path[MAX_PATH * 3 + 2];
#ifndef UNDER_CE
WCHAR workCurDir[MAX_PATH + 32];
#endif
size_t pathLen;
DWORD winRes;
const wchar_t *cmdLineParams;
const char *errorMessage = NULL;
BoolInt useShellExecute = True;
DWORD exitCode = 0;
LoadSecurityDlls();
#ifdef _CONSOLE
SetConsoleCtrlHandler(HandlerRoutine, TRUE);
#else
UNUSED_VAR(hInstance);
UNUSED_VAR(hPrevInstance);
UNUSED_VAR(lpCmdLine);
UNUSED_VAR(nCmdShow);
#endif
CrcGenerateTable();
allocImp.Alloc = SzAlloc;
allocImp.Free = SzFree;
allocTempImp.Alloc = SzAllocTemp;
allocTempImp.Free = SzFreeTemp;
FileInStream_CreateVTable(&archiveStream);
LookToRead2_CreateVTable(&lookStream, False);
lookStream.buf = NULL;
winRes = GetModuleFileNameW(NULL, sfxPath, MAX_PATH);
if (winRes == 0 || winRes > MAX_PATH)
return 1;
{
cmdLineParams = GetCommandLineW();
#ifndef UNDER_CE
{
BoolInt quoteMode = False;
for (;; cmdLineParams++)
{
wchar_t c = *cmdLineParams;
if (c == L'\"')
quoteMode = !quoteMode;
else if (c == 0 || (c == L' ' && !quoteMode))
break;
}
}
#endif
}
{
unsigned i;
DWORD d;
winRes = GetTempPathW(MAX_PATH, path);
if (winRes == 0 || winRes > MAX_PATH)
return 1;
pathLen = wcslen(path);
d = (GetTickCount() << 12) ^ (GetCurrentThreadId() << 14) ^ GetCurrentProcessId();
for (i = 0;; i++, d += GetTickCount())
{
if (i >= 100)
{
res = SZ_ERROR_FAIL;
break;
}
wcscpy(path + pathLen, L"7z");
{
wchar_t *s = path + wcslen(path);
UInt32 value = d;
unsigned k;
for (k = 0; k < 8; k++)
{
unsigned t = value & 0xF;
value >>= 4;
s[7 - k] = (wchar_t)((t < 10) ? ('0' + t) : ('A' + (t - 10)));
}
s[k] = '\0';
}
if (DoesFileOrDirExist(path))
continue;
if (CreateDirectoryW(path, NULL))
{
wcscat(path, WSTRING_PATH_SEPARATOR);
pathLen = wcslen(path);
break;
}
if (GetLastError() != ERROR_ALREADY_EXISTS)
{
res = SZ_ERROR_FAIL;
break;
}
}
#ifndef UNDER_CE
wcscpy(workCurDir, path);
#endif
if (res != SZ_OK)
errorMessage = "Can't create temp folder";
}
if (res != SZ_OK)
{
if (!errorMessage)
errorMessage = "Error";
PrintErrorMessage(errorMessage);
return 1;
}
if (InFile_OpenW(&archiveStream.file, sfxPath) != 0)
{
errorMessage = "can not open input file";
res = SZ_ERROR_FAIL;
}
else
{
UInt64 pos = 0;
if (!FindSignature(&archiveStream.file, &pos))
res = SZ_ERROR_FAIL;
else if (File_Seek(&archiveStream.file, (Int64 *)&pos, SZ_SEEK_SET) != 0)
res = SZ_ERROR_FAIL;
if (res != 0)
errorMessage = "Can't find 7z archive";
}
if (res == SZ_OK)
{
lookStream.buf = (Byte *)ISzAlloc_Alloc(&allocImp, kInputBufSize);
if (!lookStream.buf)
res = SZ_ERROR_MEM;
else
{
lookStream.bufSize = kInputBufSize;
lookStream.realStream = &archiveStream.vt;
LookToRead2_Init(&lookStream);
}
}
SzArEx_Init(&db);
if (res == SZ_OK)
{
res = SzArEx_Open(&db, &lookStream.vt, &allocImp, &allocTempImp);
}
if (res == SZ_OK)
{
UInt32 executeFileIndex = (UInt32)(Int32)-1;
UInt32 minPrice = 1 << 30;
UInt32 i;
UInt32 blockIndex = 0xFFFFFFFF; /* it can have any value before first call (if outBuffer = 0) */
Byte *outBuffer = 0; /* it must be 0 before first call for each new archive. */
size_t outBufferSize = 0; /* it can have any value before first call (if outBuffer = 0) */
for (i = 0; i < db.NumFiles; i++)
{
size_t offset = 0;
size_t outSizeProcessed = 0;
WCHAR *temp;
if (SzArEx_GetFileNameUtf16(&db, i, NULL) >= MAX_PATH)
{
res = SZ_ERROR_FAIL;
break;
}
temp = path + pathLen;
SzArEx_GetFileNameUtf16(&db, i, (UInt16 *)temp);
{
res = SzArEx_Extract(&db, &lookStream.vt, i,
&blockIndex, &outBuffer, &outBufferSize,
&offset, &outSizeProcessed,
&allocImp, &allocTempImp);
if (res != SZ_OK)
break;
}
{
CSzFile outFile;
size_t processedSize;
size_t j;
size_t nameStartPos = 0;
for (j = 0; temp[j] != 0; j++)
{
if (temp[j] == '/')
{
temp[j] = 0;
MyCreateDir(path);
temp[j] = CHAR_PATH_SEPARATOR;
nameStartPos = j + 1;
}
}
if (SzArEx_IsDir(&db, i))
{
MyCreateDir(path);
continue;
}
else
{
unsigned extLen;
const WCHAR *name = temp + nameStartPos;
unsigned len = (unsigned)wcslen(name);
unsigned nameLen = FindExt(temp + nameStartPos, &extLen);
unsigned extPrice = FindItem(kExts, sizeof(kExts) / sizeof(kExts[0]), name + len - extLen, extLen);
unsigned namePrice = FindItem(kNames, sizeof(kNames) / sizeof(kNames[0]), name, nameLen);
unsigned price = namePrice + extPrice * 64 + (nameStartPos == 0 ? 0 : (1 << 12));
if (minPrice > price)
{
minPrice = price;
executeFileIndex = i;
useShellExecute = (extPrice != k_EXE_ExtIndex);
}
if (DoesFileOrDirExist(path))
{
errorMessage = "Duplicate file";
res = SZ_ERROR_FAIL;
break;
}
if (OutFile_OpenW(&outFile, path))
{
errorMessage = "Can't open output file";
res = SZ_ERROR_FAIL;
break;
}
}
processedSize = outSizeProcessed;
if (File_Write(&outFile, outBuffer + offset, &processedSize) != 0 || processedSize != outSizeProcessed)
{
errorMessage = "Can't write output file";
res = SZ_ERROR_FAIL;
}
#ifdef USE_WINDOWS_FILE
if (SzBitWithVals_Check(&db.MTime, i))
{
const CNtfsFileTime *t = db.MTime.Vals + i;
FILETIME mTime;
mTime.dwLowDateTime = t->Low;
mTime.dwHighDateTime = t->High;
SetFileTime(outFile.handle, NULL, NULL, &mTime);
}
#endif
{
SRes res2 = File_Close(&outFile);
if (res != SZ_OK)
break;
if (res2 != SZ_OK)
{
res = res2;
break;
}
}
#ifdef USE_WINDOWS_FILE
if (SzBitWithVals_Check(&db.Attribs, i))
SetFileAttributesW(path, db.Attribs.Vals[i]);
#endif
}
}
if (res == SZ_OK)
{
if (executeFileIndex == (UInt32)(Int32)-1)
{
errorMessage = "There is no file to execute";
res = SZ_ERROR_FAIL;
}
else
{
WCHAR *temp = path + pathLen;
UInt32 j;
SzArEx_GetFileNameUtf16(&db, executeFileIndex, (UInt16 *)temp);
for (j = 0; temp[j] != 0; j++)
if (temp[j] == '/')
temp[j] = CHAR_PATH_SEPARATOR;
}
}
ISzAlloc_Free(&allocImp, outBuffer);
}
SzArEx_Free(&db, &allocImp);
ISzAlloc_Free(&allocImp, lookStream.buf);
File_Close(&archiveStream.file);
if (res == SZ_OK)
{
HANDLE hProcess = 0;
#ifndef UNDER_CE
WCHAR oldCurDir[MAX_PATH + 2];
oldCurDir[0] = 0;
{
DWORD needLen = GetCurrentDirectory(MAX_PATH + 1, oldCurDir);
if (needLen == 0 || needLen > MAX_PATH)
oldCurDir[0] = 0;
SetCurrentDirectory(workCurDir);
}
#endif
if (useShellExecute)
{
SHELLEXECUTEINFO ei;
UINT32 executeRes;
BOOL success;
memset(&ei, 0, sizeof(ei));
ei.cbSize = sizeof(ei);
ei.lpFile = path;
ei.fMask = SEE_MASK_NOCLOSEPROCESS
#ifndef UNDER_CE
| SEE_MASK_FLAG_DDEWAIT
#endif
/* | SEE_MASK_NO_CONSOLE */
;
if (wcslen(cmdLineParams) != 0)
ei.lpParameters = cmdLineParams;
ei.nShow = SW_SHOWNORMAL; /* SW_HIDE; */
success = ShellExecuteEx(&ei);
executeRes = (UINT32)(UINT_PTR)ei.hInstApp;
if (!success || (executeRes <= 32 && executeRes != 0)) /* executeRes = 0 in Windows CE */
res = SZ_ERROR_FAIL;
else
hProcess = ei.hProcess;
}
else
{
STARTUPINFOW si;
PROCESS_INFORMATION pi;
WCHAR cmdLine[MAX_PATH * 3];
wcscpy(cmdLine, path);
wcscat(cmdLine, cmdLineParams);
memset(&si, 0, sizeof(si));
si.cb = sizeof(si);
if (CreateProcessW(NULL, cmdLine, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi) == 0)
res = SZ_ERROR_FAIL;
else
{
CloseHandle(pi.hThread);
hProcess = pi.hProcess;
}
}
if (hProcess != 0)
{
WaitForSingleObject(hProcess, INFINITE);
if (!GetExitCodeProcess(hProcess, &exitCode))
exitCode = 1;
CloseHandle(hProcess);
}
#ifndef UNDER_CE
SetCurrentDirectory(oldCurDir);
#endif
}
path[pathLen] = L'\0';
RemoveDirWithSubItems(path);
if (res == SZ_OK)
return (int)exitCode;
{
if (res == SZ_ERROR_UNSUPPORTED)
errorMessage = "Decoder doesn't support this archive";
else if (res == SZ_ERROR_MEM)
errorMessage = "Can't allocate required memory";
else if (res == SZ_ERROR_CRC)
errorMessage = "CRC error";
else
{
if (!errorMessage)
errorMessage = "ERROR";
}
if (errorMessage)
PrintErrorMessage(errorMessage);
}
return 1;
}
Codebase Browser
chromium