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pjs/config/makecopy.cpp

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13 KiB
C++
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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*
* Modified by David.Gardiner@unisa.edu.au
* added -i option, which prepends a #line with the absolute path of the file. Useful
* for debugging Mozilla on Windows.
* added hard symbolic link instead of copy for NTFS partitions
* added multi-copy, so a number of files can be copied to the same destination at once.
*
*/
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <direct.h>
#include <sys/stat.h>
#include <sys/utime.h>
#include <io.h>
#include <fcntl.h>
/*
Unicode calls are linked at run-time, so that the application can run under
Windows NT and 95 (which doesn't support the Unicode calls)
The following APIs are linked:
BackupWrite
CreateFileW
GetFullPathNameW
*/
//static const char *prog;
BOOL insertHashLine = FALSE;
BOOL trySymlink = FALSE;
typedef WINBASEAPI BOOL (WINAPI* LPFNBackupWrite)(HANDLE, LPBYTE, DWORD, LPDWORD, BOOL, BOOL, LPVOID *);
typedef WINBASEAPI HANDLE (WINAPI* LPFNCreateFileW)(LPCWSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE);
typedef WINBASEAPI DWORD (WINAPI* LPFNGetFullPathNameW)(LPCWSTR, DWORD, LPWSTR, LPWSTR *);
// Function pointers (used for NTFS hard links)
LPFNBackupWrite lpfnDllBackupWrite = NULL;
LPFNCreateFileW lpfnDllCreateFileW = NULL;
LPFNGetFullPathNameW lpfnDllGetFullPathNameW = NULL;
// Handle to DLL
HINSTANCE hDLL = NULL;
/*
** Flip any "unix style slashes" into "dos style backslashes"
*/
inline void FlipSlashes(char *name)
{
for( int i=0; name[i]; i++ ) {
if( name[i] == '/' ) name[i] = '\\';
}
}
/*
* Flip any "dos style backslashes" into "unix style slashes"
*/
inline void UnflipSlashes(char *name)
{
for( int i=0; name[i]; i++ ) {
if( name[i] == '\\' ) name[i] = '/';
}
}
int MakeDir( char *path )
{
char *cp, *pstr;
struct stat sb;
pstr = path;
while( cp = strchr(pstr, '\\') ) {
*cp = '\0';
if( !(stat(path, &sb) == 0 && (sb.st_mode & _S_IFDIR) )) {
/* create the new sub-directory */
printf("+++ makecopy: creating directory %s\n", path);
if( mkdir(path) < 0 ) {
return -1;
}
} /* else sub-directory already exists.... */
*cp = '\\';
pstr = cp+1;
}
return 0;
}
/*
* Display error code and message for last error
*/
int ReportError()
{
LPVOID lpMsgBuf = NULL;
DWORD err = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
NULL,
err,
0,
(LPTSTR) &lpMsgBuf,
0,
NULL);
fprintf(stderr, "%u, %s\n", err, (LPCTSTR) lpMsgBuf ) ;
LocalFree( lpMsgBuf );
return -1;
}
int ReportError(const char* msg)
{
fprintf(stderr, "%Error: s\n", msg);
return ReportError();
}
/*
Creates an NTFS hard link of src at dest.
NT5 will have a CreateHardLink API which will do the same thing, but a lot simpler
This is based on the MSDN code sample Q153181
*/
BOOL hardSymLink(LPCSTR src, LPCSTR dest)
{
WCHAR FileLink[ MAX_PATH + 1 ];
LPWSTR FilePart;
WIN32_STREAM_ID StreamId;
DWORD dwBytesWritten;
BOOL bSuccess;
// Convert src and dest to Unicode
DWORD cbPathLen = MultiByteToWideChar(CP_ACP, 0, src, -1, NULL, 0);
LPWSTR FileSource = new WCHAR[cbPathLen+1];
MultiByteToWideChar(CP_ACP, 0, src, -1, FileSource, cbPathLen);
cbPathLen = MultiByteToWideChar(CP_ACP, 0, dest, -1, NULL, 0);
LPWSTR FileDest = new WCHAR[cbPathLen+1];
MultiByteToWideChar(CP_ACP, 0, dest, -1, FileDest, cbPathLen);
//
// open existing file that we link to
//
HANDLE hFileSource = lpfnDllCreateFileW(
FileSource,
FILE_WRITE_ATTRIBUTES,
FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
NULL, // sa
OPEN_EXISTING,
0,
NULL
);
if(hFileSource == INVALID_HANDLE_VALUE) {
ReportError("CreateFile (source)");
return FALSE;
}
//
// validate and sanitize supplied link path and use the result
// the full path MUST be Unicode for BackupWrite
//
cbPathLen = lpfnDllGetFullPathNameW( FileDest, MAX_PATH, FileLink, &FilePart);
if(cbPathLen == 0) {
ReportError("GetFullPathName");
return FALSE;
}
cbPathLen = (cbPathLen + 1) * sizeof(WCHAR); // adjust for byte count
//
// it might also be a good idea to verify the existence of the link,
// (and possibly bail), as the file specified in FileLink will be
// overwritten if it already exists
//
//
// prepare and write the WIN32_STREAM_ID out
//
LPVOID lpContext = NULL;
StreamId.dwStreamId = BACKUP_LINK;
StreamId.dwStreamAttributes = 0;
StreamId.dwStreamNameSize = 0;
StreamId.Size.HighPart = 0;
StreamId.Size.LowPart = cbPathLen;
//
// compute length of variable size WIN32_STREAM_ID
//
DWORD StreamHeaderSize = (LPBYTE)&StreamId.cStreamName - (LPBYTE)&
StreamId+ StreamId.dwStreamNameSize ;
bSuccess = lpfnDllBackupWrite(
hFileSource,
(LPBYTE)&StreamId, // buffer to write
StreamHeaderSize, // number of bytes to write
&dwBytesWritten,
FALSE, // don't abort yet
FALSE, // don't process security
&lpContext
);
if(bSuccess) {
//
// write out the buffer containing the path
//
bSuccess = lpfnDllBackupWrite(
hFileSource,
(LPBYTE)FileLink, // buffer to write
cbPathLen, // number of bytes to write
&dwBytesWritten,
FALSE, // don't abort yet
FALSE, // don't process security
&lpContext
);
//
// free context
//
lpfnDllBackupWrite(
hFileSource,
NULL, // buffer to write
0, // number of bytes to write
&dwBytesWritten,
TRUE, // abort
FALSE, // don't process security
&lpContext
);
}
CloseHandle( hFileSource );
if(!bSuccess) {
ReportError("BackupWrite");
return FALSE;
}
delete FileSource;
delete FileDest;
return TRUE;
}
int CopyIfNecessary(const char *oldFile, const char *newFile)
{
LPTSTR fullPathName = NULL;
LPTSTR filenamePart = NULL;
char buffer[8192];
DWORD bytesRead = 0;
DWORD bytesWritten = 0;
struct stat newsb;
struct stat oldsb;
// Use stat to find file details
if (stat(oldFile, &oldsb)) {
return -1;
}
if (!stat(newFile, &newsb)) {
// If file times are equal, don't copy
if (newsb.st_mtime == oldsb.st_mtime) {
#if 0
printf("+++ makecopy: %s is up to date\n", newFile);
#endif
return 0;
}
}
// find out required size
DWORD bufSize = GetFullPathName(oldFile, 0, fullPathName, &filenamePart);
fullPathName = new char[bufSize];
GetFullPathName(oldFile, bufSize, fullPathName, &filenamePart);
// If we need to insert #line, the copying is a bit involved.
if (insertHashLine == TRUE) {
struct _utimbuf utim;
printf(" #Installing %s into %s\n", oldFile, newFile);
utim.actime = oldsb.st_atime;
utim.modtime = oldsb.st_mtime; // modification time
HANDLE hNewFile = CreateFile(newFile, GENERIC_WRITE, FILE_SHARE_WRITE, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL,
NULL);
if (hNewFile == INVALID_HANDLE_VALUE) {
return ReportError("CreateFile");
}
HANDLE hOldFile = CreateFile(oldFile, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
NULL);
if (hOldFile == INVALID_HANDLE_VALUE) {
return ReportError("CreateFile");
}
// Insert first line.
sprintf(buffer, "#line 1 \"%s\"\r\n", fullPathName);
// convert to unix.
UnflipSlashes(buffer);
WriteFile(hNewFile, buffer, strlen(buffer), &bytesWritten, NULL);
// Copy file.
do {
if (!ReadFile(hOldFile, buffer, sizeof(buffer), &bytesRead, NULL)) {
return ReportError("ReadFile");
}
if (!WriteFile(hNewFile, buffer, bytesRead, &bytesWritten, NULL)) {
return ReportError("WriteFile");
}
} while (bytesRead > 0);
CloseHandle(hNewFile);
CloseHandle(hOldFile);
// make copy have same time
_utime(newFile, &utim);
// If we don't need to do a #line, use an API to copy the file..
} else {
BOOL isNTFS = FALSE;
// Find out what kind of volume this is.
if ( trySymlink ) {
char rootPathName[MAX_PATH];
char *c = strchr(fullPathName, '\\');
if (c != NULL) {
LPTSTR fileSystemName;
strncpy(rootPathName, fullPathName, (c - fullPathName) + 1);
fileSystemName = new TCHAR[50];
if (!GetVolumeInformation(rootPathName, NULL, 0, NULL, NULL, NULL, fileSystemName, sizeof(rootPathName))) {
return ReportError("GetVolumeInformation");
}
isNTFS = (strcmp(fileSystemName, "NTFS") == 0);
delete fileSystemName;
}
}
if (isNTFS) {
printf(" Symlinking %s into %s\n", oldFile, newFile);
if (! hardSymLink(oldFile, newFile) ) {
return 1;
}
} else {
printf(" Installing %s into %s\n", oldFile, newFile);
if( ! CopyFile(oldFile, newFile, FALSE) ) {
ReportError("CopyFile");
return 1;
}
}
}
delete fullPathName;
return 0;
}
void Usage(void)
{
fprintf(stderr, "makecopy: [-is] <file1> [file2 ... fileN] <dir-path>\n");
fprintf(stderr, " -i -- add #line directive\n");
fprintf(stderr, " -s -- use symlinks on NT when possible\n");
}
int main( int argc, char *argv[] )
{
char old_path[4096];
char new_path[4096];
char *oldFileName; // points to where file name starts in old_path
char *newFileName; // points to where file name starts in new_path
WIN32_FIND_DATA findFileData;
int rv = 0;
int i = 1;
if (argc < 3) {
Usage();
return 2;
}
// parse option flags
for ( ; *argv[i] == '-' ; ++i) {
char *opt = argv[i]+1;
for ( ; *opt; ++opt) {
if ( *opt == 'i' )
insertHashLine = TRUE;
else if ( *opt == 's' )
trySymlink = TRUE;
else {
Usage();
return 2;
}
}
}
if ( trySymlink ) {
OSVERSIONINFO osvi;
// Symlinking supported only on WinNT, not Win9x
// Is this Windows NT?
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!GetVersionEx(&osvi)) {
return ReportError();
}
trySymlink = (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT);
if ( trySymlink ) {
hDLL = LoadLibrary("Kernel32");
if (hDLL != NULL)
{
lpfnDllBackupWrite = (LPFNBackupWrite)GetProcAddress(hDLL, "BackupWrite");
lpfnDllCreateFileW = (LPFNCreateFileW)GetProcAddress(hDLL, "CreateFileW");
lpfnDllGetFullPathNameW = (LPFNGetFullPathNameW) GetProcAddress(hDLL, "GetFullPathNameW");
if ((!lpfnDllBackupWrite) || (!lpfnDllCreateFileW) || (!lpfnDllGetFullPathNameW))
{
// handle the error
int r = ReportError("GetProcAddress");
FreeLibrary(hDLL);
return r;
}
} else {
return ReportError();
}
}
}
// destination path is last argument
strcpy(new_path, argv[argc-1]);
// append backslash to path if not already there
if (new_path[strlen(new_path)] != '\\') {
strcat(new_path, "\\");
}
//sprintf(new_path, "%s\\", argv[i+1]);
FlipSlashes(new_path);
newFileName = new_path + strlen(new_path);
if( MakeDir(new_path) < 0 ) {
fprintf(stderr, "\n+++ makecopy: unable to create directory %s\n", new_path);
return 1;
}
// copy all named source files
while (i < (argc - 1)) {
strcpy(old_path, argv[i]);
FlipSlashes(old_path);
oldFileName = strrchr(old_path, '\\');
if (oldFileName) {
oldFileName++;
} else {
oldFileName = old_path;
}
HANDLE hFindFile = FindFirstFile(old_path, &findFileData);
if (hFindFile != INVALID_HANDLE_VALUE) {
do {
strcpy(oldFileName, findFileData.cFileName);
strcpy(newFileName, findFileData.cFileName);
rv = CopyIfNecessary(old_path, new_path);
} while (FindNextFile(hFindFile, &findFileData) != 0);
} else {
fprintf(stderr, "\n+++ makecopy: no such file: %s\n", old_path);
}
FindClose(hFindFile);
i++;
}
if ( trySymlink ) {
FreeLibrary(hDLL);
}
return 0;
}
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