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pjs/xpcom/io/nsLocalFileUnix.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code,
* released March 31, 1998.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998-1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Mike Shaver <shaver@mozilla.org>
* Christopher Blizzard <blizzard@mozilla.org>
* Jason Eager <jce2@po.cwru.edu>
* Stuart Parmenter <pavlov@netscape.com>
* Brendan Eich <brendan@mozilla.org>
* Pete Collins <petejc@mozdev.org>
* Paul Ashford <arougthopher@lizardland.net>
*/
/**
* Implementation of nsIFile for ``Unixy'' systems.
*/
// We're going to need some autoconf loving, I can just tell.
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <utime.h>
#include <dirent.h>
#include <ctype.h>
#include <locale.h>
#ifdef XP_BEOS
#include <Path.h>
#include <Entry.h>
#include <Roster.h>
#endif
#if defined(VMS)
#include <fabdef.h>
#endif
#include "nsDirectoryServiceDefs.h"
#include "nsCRT.h"
#include "nsCOMPtr.h"
#include "nsMemory.h"
#include "nsIFile.h"
#include "nsILocalFile.h"
#include "nsString.h"
#include "nsReadableUtils.h"
#include "nsLocalFileUnix.h"
#include "nsIComponentManager.h"
#include "nsXPIDLString.h"
#include "prproces.h"
#include "nsISimpleEnumerator.h"
#include "nsITimelineService.h"
#include "nsNativeCharsetUtils.h"
// On some platforms file/directory name comparisons need to
// be case-blind.
#if defined(VMS)
#define FILE_STRCMP strcasecmp
#define FILE_STRNCMP strncasecmp
#else
#define FILE_STRCMP strcmp
#define FILE_STRNCMP strncmp
#endif
#define VALIDATE_STAT_CACHE() \
PR_BEGIN_MACRO \
if (!mHaveCachedStat) { \
FillStatCache(); \
if (!mHaveCachedStat) \
return NSRESULT_FOR_ERRNO(); \
} \
PR_END_MACRO
#define CHECK_mPath() \
PR_BEGIN_MACRO \
if (mPath.IsEmpty()) \
return NS_ERROR_NOT_INITIALIZED; \
PR_END_MACRO
/* directory enumerator */
class NS_COM
nsDirEnumeratorUnix : public nsISimpleEnumerator
{
public:
nsDirEnumeratorUnix();
virtual ~nsDirEnumeratorUnix();
// nsISupports interface
NS_DECL_ISUPPORTS
// nsISimpleEnumerator interface
NS_DECL_NSISIMPLEENUMERATOR
NS_IMETHOD Init(nsLocalFile *parent, PRBool ignored);
protected:
NS_IMETHOD GetNextEntry();
DIR *mDir;
struct dirent *mEntry;
nsCString mParentPath;
};
nsDirEnumeratorUnix::nsDirEnumeratorUnix() :
mDir(nsnull),
mEntry(nsnull)
{
NS_INIT_REFCNT();
}
nsDirEnumeratorUnix::~nsDirEnumeratorUnix()
{
if (mDir)
closedir(mDir);
}
NS_IMPL_ISUPPORTS1(nsDirEnumeratorUnix, nsISimpleEnumerator)
NS_IMETHODIMP
nsDirEnumeratorUnix::Init(nsLocalFile *parent, PRBool resolveSymlinks /*ignored*/)
{
nsCAutoString dirPath;
if (NS_FAILED(parent->GetNativePath(dirPath)) ||
dirPath.IsEmpty()) {
return NS_ERROR_FILE_INVALID_PATH;
}
if (NS_FAILED(parent->GetNativePath(mParentPath)))
return NS_ERROR_FAILURE;
mDir = opendir(dirPath.get());
if (!mDir)
return NSRESULT_FOR_ERRNO();
return GetNextEntry();
}
NS_IMETHODIMP
nsDirEnumeratorUnix::HasMoreElements(PRBool *result)
{
*result = mDir && mEntry;
return NS_OK;
}
NS_IMETHODIMP
nsDirEnumeratorUnix::GetNext(nsISupports **_retval)
{
nsresult rv;
if (!mDir || !mEntry) {
*_retval = nsnull;
return NS_OK;
}
nsLocalFile* file = new nsLocalFile();
if (!file)
return NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv = file->InitWithNativePath(mParentPath)) ||
NS_FAILED(rv = file->AppendNative(nsDependentCString(mEntry->d_name)))) {
return rv;
}
*_retval = NS_STATIC_CAST(nsISupports *, file);
NS_ADDREF(*_retval);
return GetNextEntry();
}
NS_IMETHODIMP
nsDirEnumeratorUnix::GetNextEntry()
{
do {
errno = 0;
mEntry = readdir(mDir);
// end of dir or error
if (!mEntry)
return NSRESULT_FOR_ERRNO();
// keep going past "." and ".."
} while (mEntry->d_name[0] == '.' &&
(mEntry->d_name[1] == '\0' || // .\0
(mEntry->d_name[1] == '.' &&
mEntry->d_name[2] == '\0'))); // ..\0
return NS_OK;
}
nsLocalFile::nsLocalFile() :
mHaveCachedStat(PR_FALSE)
{
NS_INIT_REFCNT();
}
nsLocalFile::~nsLocalFile()
{
}
NS_IMPL_THREADSAFE_ISUPPORTS2(nsLocalFile,
nsIFile,
nsILocalFile)
nsresult
nsLocalFile::nsLocalFileConstructor(nsISupports *outer,
const nsIID &aIID,
void **aInstancePtr)
{
NS_ENSURE_ARG_POINTER(aInstancePtr);
NS_ENSURE_NO_AGGREGATION(outer);
*aInstancePtr = nsnull;
nsCOMPtr<nsIFile> inst = new nsLocalFile();
if (!inst)
return NS_ERROR_OUT_OF_MEMORY;
return inst->QueryInterface(aIID, aInstancePtr);
}
nsresult
nsLocalFile::FillStatCache() {
if (stat(mPath.get(), &mCachedStat) == -1) {
// try lstat it may be a symlink
if (lstat(mPath.get(), &mCachedStat) == -1) {
return NSRESULT_FOR_ERRNO();
}
}
mHaveCachedStat = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::Clone(nsIFile **file)
{
NS_ENSURE_ARG(file);
nsLocalFile* localFile = new nsLocalFile();
if (!localFile)
return NS_ERROR_OUT_OF_MEMORY;
nsresult rv = localFile->InitWithNativePath(mPath);
if (NS_FAILED(rv))
return rv;
*file = NS_STATIC_CAST(nsIFile *, localFile);
NS_ADDREF(*file);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::InitWithNativePath(const nsACString &filePath)
{
if (Substring(filePath, 0, 2) == NS_LITERAL_CSTRING("~/")) {
nsCOMPtr<nsIFile> homeDir;
nsCAutoString homePath;
if (NS_FAILED(NS_GetSpecialDirectory(NS_OS_HOME_DIR,
getter_AddRefs(homeDir))) ||
NS_FAILED(homeDir->GetNativePath(homePath))) {
return NS_ERROR_FAILURE;
}
mPath = homePath + Substring(filePath, 1, filePath.Length() - 1);
} else {
mPath = filePath;
}
// trim off trailing slashes
ssize_t len = mPath.Length();
while ((len > 1) && (mPath[len - 1] == '/'))
--len;
mPath.SetLength(len);
InvalidateCache();
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::CreateAllAncestors(PRUint32 permissions)
{
// <jband> I promise to play nice
char *buffer = NS_CONST_CAST(char *, mPath.get()),
*slashp = buffer;
#ifdef DEBUG_NSIFILE
fprintf(stderr, "nsIFile: before: %s\n", buffer);
#endif
while ((slashp = strchr(slashp + 1, '/'))) {
/*
* Sequences of '/' are equivalent to a single '/'.
*/
if (slashp[1] == '/')
continue;
/*
* If the path has a trailing slash, don't make the last component,
* because we'll get EEXIST in Create when we try to build the final
* component again, and it's easier to condition the logic here than
* there.
*/
if (slashp[1] == '\0')
break;
/* Temporarily NUL-terminate here */
*slashp = '\0';
#ifdef DEBUG_NSIFILE
fprintf(stderr, "nsIFile: mkdir(\"%s\")\n", buffer);
#endif
int mkdir_result = mkdir(buffer, permissions);
int mkdir_errno = errno;
if (mkdir_result == -1) {
/*
* Always set |errno| to EEXIST if the dir already exists
* (we have to do this here since the errno value is not consistent
* in all cases - various reasons like different platform,
* automounter-controlled dir, etc. can affect it (see bug 125489
* for details)).
*/
if (access(buffer, F_OK) == 0) {
mkdir_errno = EEXIST;
}
}
/* Put the / back before we (maybe) return */
*slashp = '/';
/*
* We could get EEXIST for an existing file -- not directory --
* with the name of one of our ancestors, but that's OK: we'll get
* ENOTDIR when we try to make the next component in the path,
* either here on back in Create, and error out appropriately.
*/
if (mkdir_result == -1 && mkdir_errno != EEXIST)
return nsresultForErrno(mkdir_errno);
}
#ifdef DEBUG_NSIFILE
fprintf(stderr, "nsIFile: after: %s\n", buffer);
#endif
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::OpenNSPRFileDesc(PRInt32 flags, PRInt32 mode, PRFileDesc **_retval)
{
*_retval = PR_Open(mPath.get(), flags, mode);
if (! *_retval)
return NS_ErrorAccordingToNSPR();
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::OpenANSIFileDesc(const char *mode, FILE **_retval)
{
*_retval = fopen(mPath.get(), mode);
if (! *_retval)
return NS_ERROR_FAILURE;
return NS_OK;
}
static int
do_create(const char *path, PRIntn flags, mode_t mode, PRFileDesc **_retval)
{
*_retval = PR_Open(path, flags, mode);
return *_retval ? 0 : -1;
}
static int
do_mkdir(const char *path, PRIntn flags, mode_t mode, PRFileDesc **_retval)
{
*_retval = nsnull;
return mkdir(path, mode);
}
nsresult
nsLocalFile::CreateAndKeepOpen(PRUint32 type, PRIntn flags,
PRUint32 permissions, PRFileDesc **_retval)
{
if (type != NORMAL_FILE_TYPE && type != DIRECTORY_TYPE)
return NS_ERROR_FILE_UNKNOWN_TYPE;
int result;
int (*createFunc)(const char *, PRIntn, mode_t, PRFileDesc **) =
(type == NORMAL_FILE_TYPE) ? do_create : do_mkdir;
result = createFunc(mPath.get(), flags, permissions, _retval);
if (result == -1 && errno == ENOENT) {
/*
* If we failed because of missing ancestor components, try to create
* them and then retry the original creation.
*
* Ancestor directories get the same permissions as the file we're
* creating, with the X bit set for each of (user,group,other) with
* an R bit in the original permissions. If you want to do anything
* fancy like setgid or sticky bits, do it by hand.
*/
int dirperm = permissions;
if (permissions & S_IRUSR)
dirperm |= S_IXUSR;
if (permissions & S_IRGRP)
dirperm |= S_IXGRP;
if (permissions & S_IROTH)
dirperm |= S_IXOTH;
#ifdef DEBUG_NSIFILE
fprintf(stderr, "nsIFile: perm = %o, dirperm = %o\n", permissions,
dirperm);
#endif
if (NS_FAILED(CreateAllAncestors(dirperm)))
return NS_ERROR_FAILURE;
#ifdef DEBUG_NSIFILE
fprintf(stderr, "nsIFile: Create(\"%s\") again\n", mPath.get());
#endif
result = createFunc(mPath.get(), flags, permissions, _retval);
}
return NSRESULT_FOR_RETURN(result);
}
NS_IMETHODIMP
nsLocalFile::Create(PRUint32 type, PRUint32 permissions)
{
PRFileDesc *junk = nsnull;
nsresult rv = CreateAndKeepOpen(type,
PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE |
PR_EXCL,
permissions,
&junk);
if (junk)
PR_Close(junk);
return rv;
}
NS_IMETHODIMP
nsLocalFile::AppendNative(const nsACString &fragment)
{
if (fragment.IsEmpty())
return NS_OK;
// only one component of path can be appended
nsACString::const_iterator begin, end;
if (FindCharInReadable('/', fragment.BeginReading(begin),
fragment.EndReading(end)))
return NS_ERROR_FILE_UNRECOGNIZED_PATH;
return AppendRelativeNativePath(fragment);
}
NS_IMETHODIMP
nsLocalFile::AppendRelativeNativePath(const nsACString &fragment)
{
if (fragment.IsEmpty())
return NS_OK;
// No leading '/'
if (fragment.First() == '/')
return NS_ERROR_FILE_UNRECOGNIZED_PATH;
if (mPath.Equals(NS_LITERAL_CSTRING("/")))
mPath.Append(fragment);
else
mPath.Append(NS_LITERAL_CSTRING("/") + fragment);
InvalidateCache();
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::Normalize()
{
char resolved_path[PATH_MAX] = "";
char *resolved_path_ptr = nsnull;
#ifdef XP_BEOS
BEntry be_e(mPath.get(), true);
BPath be_p;
status_t err;
if ((err = be_e.GetPath(&be_p)) == B_OK) {
resolved_path_ptr = be_p.Path();
PL_strncpyz(resolved_path, resolved_path_ptr, PATH_MAX - 1);
}
#else
resolved_path_ptr = realpath(mPath.get(), resolved_path);
#endif
// if there is an error, the return is null.
if (!resolved_path_ptr)
return NSRESULT_FOR_ERRNO();
mPath = resolved_path;
return NS_OK;
}
void
nsLocalFile::LocateNativeLeafName(nsACString::const_iterator &begin,
nsACString::const_iterator &end)
{
// XXX perhaps we should cache this??
mPath.BeginReading(begin);
mPath.EndReading(end);
nsACString::const_iterator it = end;
nsACString::const_iterator stop = begin;
--stop;
while (--it != stop) {
if (*it == '/') {
begin = ++it;
return;
}
}
// else, the entire path is the leaf name (which means this
// isn't an absolute path... unexpected??)
}
NS_IMETHODIMP
nsLocalFile::GetNativeLeafName(nsACString &aLeafName)
{
nsACString::const_iterator begin, end;
LocateNativeLeafName(begin, end);
aLeafName = Substring(begin, end);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::SetNativeLeafName(const nsACString &aLeafName)
{
nsACString::const_iterator begin, end;
LocateNativeLeafName(begin, end);
mPath.Replace(begin.get() - mPath.get(), Distance(begin, end), aLeafName);
InvalidateCache();
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::GetNativePath(nsACString &_retval)
{
_retval = mPath;
return NS_OK;
}
nsresult
nsLocalFile::GetNativeTargetPathName(nsIFile *newParent,
const nsACString &newName,
nsACString &_retval)
{
nsresult rv;
nsCOMPtr<nsIFile> oldParent;
if (!newParent) {
if (NS_FAILED(rv = GetParent(getter_AddRefs(oldParent))))
return rv;
newParent = oldParent.get();
} else {
// check to see if our target directory exists
PRBool targetExists;
if (NS_FAILED(rv = newParent->Exists(&targetExists)))
return rv;
if (!targetExists) {
// XXX create the new directory with some permissions
rv = newParent->Create(DIRECTORY_TYPE, 0755);
if (NS_FAILED(rv))
return rv;
} else {
// make sure that the target is actually a directory
PRBool targetIsDirectory;
if (NS_FAILED(rv = newParent->IsDirectory(&targetIsDirectory)))
return rv;
if (!targetIsDirectory)
return NS_ERROR_FILE_DESTINATION_NOT_DIR;
}
}
nsACString::const_iterator nameBegin, nameEnd;
if (!newName.IsEmpty()) {
newName.BeginReading(nameBegin);
newName.EndReading(nameEnd);
}
else
LocateNativeLeafName(nameBegin, nameEnd);
nsCAutoString dirName;
if (NS_FAILED(rv = newParent->GetNativePath(dirName)))
return rv;
_retval = dirName
+ NS_LITERAL_CSTRING("/")
+ Substring(nameBegin, nameEnd);
return NS_OK;
}
nsresult
nsLocalFile::CopyDirectoryTo(nsIFile *newParent)
{
nsresult rv;
/*
* dirCheck is used for various boolean test results such as from Equals,
* Exists, isDir, etc.
*/
PRBool dirCheck, isSymlink;
PRUint32 oldPerms;
if NS_FAILED((rv = IsDirectory(&dirCheck)))
return rv;
if (!dirCheck)
return CopyToNative(newParent, nsCString());
if (NS_FAILED(rv = Equals(newParent, &dirCheck)))
return rv;
if (dirCheck) {
// can't copy dir to itself
return NS_ERROR_INVALID_ARG;
}
if (NS_FAILED(rv = newParent->Exists(&dirCheck)))
return rv;
if (!dirCheck) {
// get the dirs old permissions
if (NS_FAILED(rv = GetPermissions(&oldPerms)))
return rv;
if (NS_FAILED(rv = newParent->Create(DIRECTORY_TYPE, oldPerms)))
return rv;
} else { // dir exists lets try to use leaf
nsCAutoString leafName;
if (NS_FAILED(rv = GetNativeLeafName(leafName)))
return rv;
if (NS_FAILED(rv = newParent->AppendNative(leafName)))
return rv;
if (NS_FAILED(rv = newParent->Exists(&dirCheck)))
return rv;
if (dirCheck)
return NS_ERROR_FILE_ALREADY_EXISTS; // dest exists
if (NS_FAILED(rv = newParent->Create(DIRECTORY_TYPE, oldPerms)))
return rv;
}
nsCOMPtr<nsISimpleEnumerator> dirIterator;
if (NS_FAILED(rv = GetDirectoryEntries(getter_AddRefs(dirIterator))))
return rv;
PRBool hasMore = PR_FALSE;
while (dirIterator->HasMoreElements(&hasMore), hasMore) {
nsCOMPtr<nsIFile> entry;
rv = dirIterator->GetNext((nsISupports**)getter_AddRefs(entry));
if (NS_FAILED(rv))
continue;
if (NS_FAILED(rv = entry->IsSymlink(&isSymlink)))
return rv;
if (NS_FAILED(rv = entry->IsDirectory(&dirCheck)))
return rv;
if (dirCheck && !isSymlink) {
nsCOMPtr<nsIFile> destClone;
rv = newParent->Clone(getter_AddRefs(destClone));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsILocalFile> newDir(do_QueryInterface(destClone));
if (NS_FAILED(rv = entry->CopyToNative(newDir, nsCString()))) {
#ifdef DEBUG
nsresult rv2;
nsCAutoString pathName;
if (NS_FAILED(rv2 = entry->GetNativePath(pathName)))
return rv2;
printf("Operation not supported: %s\n", pathName.get());
#endif
if (rv == NS_ERROR_OUT_OF_MEMORY)
return rv;
continue;
}
}
} else {
if (NS_FAILED(rv = entry->CopyToNative(newParent, nsCString()))) {
#ifdef DEBUG
nsresult rv2;
nsCAutoString pathName;
if (NS_FAILED(rv2 = entry->GetNativePath(pathName)))
return rv2;
printf("Operation not supported: %s\n", pathName.get());
#endif
if (rv == NS_ERROR_OUT_OF_MEMORY)
return rv;
continue;
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::CopyToNative(nsIFile *newParent, const nsACString &newName)
{
nsresult rv;
// check to make sure that this has been initialized properly
CHECK_mPath();
// we copy the parent here so 'newParent' remains immutable
nsCOMPtr <nsIFile> workParent;
if (NS_FAILED(rv = newParent->Clone(getter_AddRefs(workParent))))
return rv;
// check to see if we are a directory or if we are a file
PRBool isDirectory;
if (NS_FAILED(rv = IsDirectory(&isDirectory)))
return rv;
nsCAutoString newPathName;
if (isDirectory) {
if (!newName.IsEmpty()) {
if (NS_FAILED(rv = workParent->AppendNative(newName)))
return rv;
} else {
if (NS_FAILED(rv = GetNativeLeafName(newPathName)))
return rv;
if (NS_FAILED(rv = workParent->AppendNative(newPathName)))
return rv;
}
if (NS_FAILED(rv = CopyDirectoryTo(workParent)))
return rv;
} else {
rv = GetNativeTargetPathName(workParent, newName, newPathName);
if (NS_FAILED(rv))
return rv;
#ifdef DEBUG_blizzard
printf("nsLocalFile::CopyTo() %s -> %s\n", mPath.get(), newPathName.get());
#endif
// actually create the file.
nsCOMPtr<nsLocalFile> newFile = new nsLocalFile();
if (!newFile)
return NS_ERROR_OUT_OF_MEMORY;
rv = newFile->InitWithNativePath(newPathName);
if (NS_FAILED(rv))
return rv;
// get the old permissions
PRUint32 myPerms;
GetPermissions(&myPerms);
// Create the new file with the old file's permissions, even if write
// permission is missing. We can't create with write permission and
// then change back to myPerm on all filesystems (FAT on Linux, e.g.).
// But we can write to a read-only file on all Unix filesystems if we
// open it successfully for writing.
PRFileDesc *newFD;
rv = newFile->CreateAndKeepOpen(NORMAL_FILE_TYPE,
PR_WRONLY|PR_CREATE_FILE|PR_TRUNCATE,
myPerms,
&newFD);
if (NS_FAILED(rv))
return rv;
// open the old file, too
PRBool specialFile;
if (NS_FAILED(rv = IsSpecial(&specialFile))) {
PR_Close(newFD);
return rv;
}
if (specialFile) {
#ifdef DEBUG
printf("Operation not supported: %s\n", mPath.get());
#endif
// make sure to clean up properly
PR_Close(newFD);
return NS_OK;
}
PRFileDesc *oldFD;
rv = OpenNSPRFileDesc(PR_RDONLY, myPerms, &oldFD);
if (NS_FAILED(rv)) {
// make sure to clean up properly
PR_Close(newFD);
return rv;
}
#ifdef DEBUG_blizzard
PRInt32 totalRead = 0;
PRInt32 totalWritten = 0;
#endif
char buf[BUFSIZ];
PRInt32 bytesRead;
while ((bytesRead = PR_Read(oldFD, buf, BUFSIZ)) > 0) {
#ifdef DEBUG_blizzard
totalRead += bytesRead;
#endif
// PR_Write promises never to do a short write
PRInt32 bytesWritten = PR_Write(newFD, buf, bytesRead);
if (bytesWritten < 0) {
bytesRead = -1;
break;
}
NS_ASSERTION(bytesWritten == bytesRead, "short PR_Write?");
#ifdef DEBUG_blizzard
totalWritten += bytesWritten;
#endif
}
#ifdef DEBUG_blizzard
printf("read %d bytes, wrote %d bytes\n",
totalRead, totalWritten);
#endif
// close the files
PR_Close(newFD);
PR_Close(oldFD);
// check for read (or write) error after cleaning up
if (bytesRead < 0)
return NS_ERROR_OUT_OF_MEMORY;
}
return rv;
}
NS_IMETHODIMP
nsLocalFile::CopyToFollowingLinksNative(nsIFile *newParent, const nsACString &newName)
{
return CopyToNative(newParent, newName);
}
NS_IMETHODIMP
nsLocalFile::MoveToNative(nsIFile *newParent, const nsACString &newName)
{
nsresult rv;
// check to make sure that this has been initialized properly
CHECK_mPath();
// check to make sure that we have a new parent
nsCAutoString newPathName;
rv = GetNativeTargetPathName(newParent, newName, newPathName);
if (NS_FAILED(rv))
return rv;
// try for atomic rename, falling back to copy/delete
if (rename(mPath.get(), newPathName.get()) < 0) {
#ifdef VMS
if (errno == EXDEV || errno == ENXIO) {
#else
if (errno == EXDEV) {
#endif
rv = CopyToNative(newParent, newName);
if (NS_SUCCEEDED(rv))
rv = Remove(PR_TRUE);
} else {
rv = NSRESULT_FOR_ERRNO();
}
}
return rv;
}
NS_IMETHODIMP
nsLocalFile::Remove(PRBool recursive)
{
CHECK_mPath();
VALIDATE_STAT_CACHE();
PRBool isSymLink, isDir;
nsresult rv = IsSymlink(&isSymLink);
if (NS_FAILED(rv))
return rv;
if (!recursive && isSymLink)
return NSRESULT_FOR_RETURN(unlink(mPath.get()));
isDir = S_ISDIR(mCachedStat.st_mode);
InvalidateCache();
if (isDir) {
if (recursive) {
nsCOMPtr<nsDirEnumeratorUnix> dir = new nsDirEnumeratorUnix();
if (!dir)
return NS_ERROR_OUT_OF_MEMORY;
rv = dir->Init(this, PR_FALSE);
if (NS_FAILED(rv))
return rv;
PRBool more;
while (dir->HasMoreElements(&more), more) {
nsCOMPtr<nsISupports> item;
rv = dir->GetNext(getter_AddRefs(item));
if (NS_FAILED(rv))
return NS_ERROR_FAILURE;
nsCOMPtr<nsIFile> file = do_QueryInterface(item, &rv);
if (NS_FAILED(rv))
return NS_ERROR_FAILURE;
if (NS_FAILED(rv = file->Remove(recursive)))
return rv;
}
}
if (rmdir(mPath.get()) == -1)
return NSRESULT_FOR_ERRNO();
} else {
if (unlink(mPath.get()) == -1)
return NSRESULT_FOR_ERRNO();
}
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::GetLastModifiedTime(PRInt64 *aLastModTime)
{
CHECK_mPath();
NS_ENSURE_ARG(aLastModTime);
PRFileInfo64 info;
if (PR_GetFileInfo64(mPath.get(), &info) != PR_SUCCESS)
return NSRESULT_FOR_ERRNO();
// PRTime is a 64 bit value
// microseconds -> milliseconds
PRInt64 usecPerMsec;
LL_I2L(usecPerMsec, PR_USEC_PER_MSEC);
LL_DIV(*aLastModTime, info.modifyTime, usecPerMsec);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::SetLastModifiedTime(PRInt64 aLastModTime)
{
CHECK_mPath();
int result;
if (! LL_IS_ZERO(aLastModTime)) {
VALIDATE_STAT_CACHE();
struct utimbuf ut;
ut.actime = mCachedStat.st_atime;
// convert milliseconds to seconds since the unix epoch
double dTime;
LL_L2D(dTime, aLastModTime);
ut.modtime = (time_t) (dTime / PR_MSEC_PER_SEC);
result = utime(mPath.get(), &ut);
} else {
result = utime(mPath.get(), nsnull);
}
InvalidateCache();
return NSRESULT_FOR_RETURN(result);
}
NS_IMETHODIMP
nsLocalFile::GetLastModifiedTimeOfLink(PRInt64 *aLastModTimeOfLink)
{
CHECK_mPath();
NS_ENSURE_ARG(aLastModTimeOfLink);
struct stat sbuf;
if (lstat(mPath.get(), &sbuf) == -1)
return NSRESULT_FOR_ERRNO();
LL_I2L(*aLastModTimeOfLink, (PRInt32)sbuf.st_mtime);
// lstat returns st_mtime in seconds
PRInt64 msecPerSec;
LL_I2L(msecPerSec, PR_MSEC_PER_SEC);
LL_MUL(*aLastModTimeOfLink, *aLastModTimeOfLink, msecPerSec);
return NS_OK;
}
/*
* utime(2) may or may not dereference symlinks, joy.
*/
NS_IMETHODIMP
nsLocalFile::SetLastModifiedTimeOfLink(PRInt64 aLastModTimeOfLink)
{
return SetLastModifiedTime(aLastModTimeOfLink);
}
/*
* Only send back permissions bits: maybe we want to send back the whole
* mode_t to permit checks against other file types?
*/
#define NORMALIZE_PERMS(mode) ((mode)& (S_IRWXU | S_IRWXG | S_IRWXO))
NS_IMETHODIMP
nsLocalFile::GetPermissions(PRUint32 *aPermissions)
{
NS_ENSURE_ARG(aPermissions);
VALIDATE_STAT_CACHE();
*aPermissions = NORMALIZE_PERMS(mCachedStat.st_mode);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::GetPermissionsOfLink(PRUint32 *aPermissionsOfLink)
{
CHECK_mPath();
NS_ENSURE_ARG(aPermissionsOfLink);
struct stat sbuf;
if (lstat(mPath.get(), &sbuf) == -1)
return NSRESULT_FOR_ERRNO();
*aPermissionsOfLink = NORMALIZE_PERMS(sbuf.st_mode);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::SetPermissions(PRUint32 aPermissions)
{
CHECK_mPath();
InvalidateCache();
/*
* Race condition here: we should use fchmod instead, there's no way to
* guarantee the name still refers to the same file.
*/
if (chmod(mPath.get(), aPermissions) < 0)
return NSRESULT_FOR_ERRNO();
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::SetPermissionsOfLink(PRUint32 aPermissions)
{
return SetPermissions(aPermissions);
}
NS_IMETHODIMP
nsLocalFile::GetFileSize(PRInt64 *aFileSize)
{
NS_ENSURE_ARG_POINTER(aFileSize);
*aFileSize = LL_ZERO;
VALIDATE_STAT_CACHE();
#if defined(VMS)
/* Only two record formats can report correct file content size */
if ((mCachedStat.st_fab_rfm != FAB$C_STMLF) &&
(mCachedStat.st_fab_rfm != FAB$C_STMCR)) {
return NS_ERROR_FAILURE;
}
#endif
/* XXX autoconf for and use stat64 if available */
if (!S_ISDIR(mCachedStat.st_mode)) {
LL_UI2L(*aFileSize, (PRUint32)mCachedStat.st_size);
}
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::SetFileSize(PRInt64 aFileSize)
{
CHECK_mPath();
PRInt32 size;
LL_L2I(size, aFileSize);
/* XXX truncate64? */
InvalidateCache();
if (truncate(mPath.get(), (off_t)size) == -1)
return NSRESULT_FOR_ERRNO();
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::GetFileSizeOfLink(PRInt64 *aFileSize)
{
CHECK_mPath();
NS_ENSURE_ARG(aFileSize);
struct stat sbuf;
if (lstat(mPath.get(), &sbuf) == -1)
return NSRESULT_FOR_ERRNO();
/* XXX autoconf for and use lstat64 if available */
LL_UI2L(*aFileSize, (PRUint32)sbuf.st_size);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::GetDiskSpaceAvailable(PRInt64 *aDiskSpaceAvailable)
{
NS_ENSURE_ARG_POINTER(aDiskSpaceAvailable);
// These systems have the operations necessary to check disk space.
#if defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_STATVFS_H)
// check to make sure that mPath is properly initialized
CHECK_mPath();
struct STATFS fs_buf;
/*
* Members of the STATFS struct that you should know about:
* f_bsize = block size on disk.
* f_bavail = number of free blocks available to a non-superuser.
* f_bfree = number of total free blocks in file system.
*/
if (STATFS(mPath.get(), &fs_buf) < 0) {
// The call to STATFS failed.
#ifdef DEBUG
printf("ERROR: GetDiskSpaceAvailable: STATFS call FAILED. \n");
#endif
return NS_ERROR_FAILURE;
}
#ifdef DEBUG_DISK_SPACE
printf("DiskSpaceAvailable: %d bytes\n",
fs_buf.f_bsize * (fs_buf.f_bavail - 1));
#endif
/*
* The number of bytes free == The number of free blocks available to
* a non-superuser, minus one as a fudge factor, multiplied by the size
* of the aforementioned blocks.
*/
PRInt64 bsize, bavail;
LL_I2L(bsize, fs_buf.f_bsize);
LL_I2L(bavail, fs_buf.f_bavail - 1);
LL_MUL(*aDiskSpaceAvailable, bsize, bavail);
return NS_OK;
#else
/*
* This platform doesn't have statfs or statvfs. I'm sure that there's
* a way to check for free disk space on platforms that don't have statfs
* (I'm SURE they have df, for example).
*
* Until we figure out how to do that, lets be honest and say that this
* command isn't implemented properly for these platforms yet.
*/
#ifdef DEBUG
printf("ERROR: GetDiskSpaceAvailable: Not implemented for plaforms without statfs.\n");
#endif
return NS_ERROR_NOT_IMPLEMENTED;
#endif /* HAVE_SYS_STATFS_H or HAVE_SYS_STATVFS_H */
}
NS_IMETHODIMP
nsLocalFile::GetParent(nsIFile **aParent)
{
CHECK_mPath();
NS_ENSURE_ARG_POINTER(aParent);
*aParent = nsnull;
// <brendan, after jband> I promise to play nice
char *buffer = NS_CONST_CAST(char *, mPath.get()),
*slashp = buffer;
// find the last significant slash in buffer
slashp = strrchr(buffer, '/');
NS_ASSERTION(slashp, "non-canonical mPath?");
if (!slashp)
return NS_ERROR_FILE_INVALID_PATH;
// for the case where we are at '/'
if (slashp == buffer)
slashp++;
// temporarily terminate buffer at the last significant slash
char c = *slashp;
*slashp = '\0';
nsCOMPtr<nsILocalFile> localFile;
nsresult rv = NS_NewNativeLocalFile(nsDependentCString(buffer), PR_TRUE,
getter_AddRefs(localFile));
// make buffer whole again
*slashp = c;
if (NS_SUCCEEDED(rv) && localFile)
rv = CallQueryInterface(localFile, aParent);
return rv;
}
/*
* The results of Exists, isWritable and isReadable are not cached.
*/
NS_IMETHODIMP
nsLocalFile::Exists(PRBool *_retval)
{
CHECK_mPath();
NS_ENSURE_ARG_POINTER(_retval);
*_retval = (access(mPath.get(), F_OK) == 0);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::IsWritable(PRBool *_retval)
{
CHECK_mPath();
NS_ENSURE_ARG_POINTER(_retval);
*_retval = (access(mPath.get(), W_OK) == 0);
if (*_retval || errno == EACCES)
return NS_OK;
return NSRESULT_FOR_ERRNO();
}
NS_IMETHODIMP
nsLocalFile::IsReadable(PRBool *_retval)
{
CHECK_mPath();
NS_ENSURE_ARG_POINTER(_retval);
*_retval = (access(mPath.get(), R_OK) == 0);
if (*_retval || errno == EACCES)
return NS_OK;
return NSRESULT_FOR_ERRNO();
}
NS_IMETHODIMP
nsLocalFile::IsExecutable(PRBool *_retval)
{
CHECK_mPath();
NS_ENSURE_ARG_POINTER(_retval);
*_retval = (access(mPath.get(), X_OK) == 0);
if (*_retval || errno == EACCES)
return NS_OK;
return NSRESULT_FOR_ERRNO();
}
NS_IMETHODIMP
nsLocalFile::IsDirectory(PRBool *_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
VALIDATE_STAT_CACHE();
*_retval = S_ISDIR(mCachedStat.st_mode);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::IsFile(PRBool *_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
VALIDATE_STAT_CACHE();
*_retval = S_ISREG(mCachedStat.st_mode);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::IsHidden(PRBool *_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
nsACString::const_iterator begin, end;
LocateNativeLeafName(begin, end);
*_retval = (*begin == '.');
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::IsSymlink(PRBool *_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
CHECK_mPath();
struct stat symStat;
lstat(mPath.get(), &symStat);
*_retval=S_ISLNK(symStat.st_mode);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::IsSpecial(PRBool *_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
VALIDATE_STAT_CACHE();
*_retval = S_ISCHR(mCachedStat.st_mode) ||
S_ISBLK(mCachedStat.st_mode) ||
#ifdef S_ISSOCK
S_ISSOCK(mCachedStat.st_mode) ||
#endif
S_ISFIFO(mCachedStat.st_mode);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::Equals(nsIFile *inFile, PRBool *_retval)
{
NS_ENSURE_ARG(inFile);
NS_ENSURE_ARG_POINTER(_retval);
*_retval = PR_FALSE;
nsresult rv;
nsCAutoString inPath;
if (NS_FAILED(rv = inFile->GetNativePath(inPath)))
return rv;
*_retval = !FILE_STRCMP(inPath.get(), mPath.get());
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::Contains(nsIFile *inFile, PRBool recur, PRBool *_retval)
{
CHECK_mPath();
NS_ENSURE_ARG(inFile);
NS_ENSURE_ARG_POINTER(_retval);
nsCAutoString inPath;
nsresult rv;
if (NS_FAILED(rv = inFile->GetNativePath(inPath)))
return rv;
*_retval = PR_FALSE;
ssize_t len = mPath.Length();
if (FILE_STRNCMP(mPath.get(), inPath.get(), len) == 0) {
// Now make sure that the |inFile|'s path has a separator at len,
// which implies that it has more components after len.
if (inPath[len] == '/')
*_retval = PR_TRUE;
}
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::GetNativeTarget(nsACString &_retval)
{
CHECK_mPath();
_retval.Truncate();
struct stat symStat;
lstat(mPath.get(), &symStat);
if (!S_ISLNK(symStat.st_mode))
return NS_ERROR_FILE_INVALID_PATH;
PRInt64 targetSize64;
if (NS_FAILED(GetFileSizeOfLink(&targetSize64)))
return NS_ERROR_FAILURE;
PRInt32 size;
LL_L2I(size, targetSize64);
char *target = (char *)nsMemory::Alloc(size + 1);
if (!target)
return NS_ERROR_OUT_OF_MEMORY;
if (readlink(mPath.get(), target, (size_t)size) < 0) {
nsMemory::Free(target);
return NSRESULT_FOR_ERRNO();
}
target[size] = '\0';
nsresult rv;
PRBool isSymlink;
nsCOMPtr<nsIFile> self(dont_QueryInterface(this));
nsCOMPtr<nsIFile> parent;
while (NS_SUCCEEDED(rv = self->GetParent(getter_AddRefs(parent)))) {
NS_ASSERTION(parent != nsnull, "no parent?!");
if (target[0] != '/') {
nsCOMPtr<nsILocalFile> localFile(do_QueryInterface(parent, &rv));
if (NS_FAILED(rv))
break;
if (NS_FAILED(rv = localFile->AppendRelativeNativePath(nsDependentCString(target))))
break;
if (NS_FAILED(rv = localFile->GetNativePath(_retval)))
break;
if (NS_FAILED(rv = parent->IsSymlink(&isSymlink)))
break;
self = parent;
} else {
nsCOMPtr<nsILocalFile> localFile;
rv = NS_NewNativeLocalFile(nsDependentCString(target), PR_TRUE,
getter_AddRefs(localFile));
if (NS_FAILED(rv))
break;
if (NS_FAILED(rv = localFile->IsSymlink(&isSymlink)))
break;
_retval = target; // XXX can we avoid this buffer copy?
self = do_QueryInterface(localFile);
}
if (NS_FAILED(rv) || !isSymlink)
break;
const nsPromiseFlatCString &flatRetval = PromiseFlatCString(_retval);
// strip off any and all trailing '/'
PRInt32 len = strlen(target);
while (target[len-1] == '/' && len > 1)
target[--len] = '\0';
if (lstat(flatRetval.get(), &symStat) < 0) {
rv = NSRESULT_FOR_ERRNO();
break;
}
if (!S_ISLNK(symStat.st_mode)) {
rv = NS_ERROR_FILE_INVALID_PATH;
break;
}
size = symStat.st_size;
if (readlink(flatRetval.get(), target, size) < 0) {
rv = NSRESULT_FOR_ERRNO();
break;
}
target[size] = '\0';
_retval.Truncate();
}
nsMemory::Free(target);
if (NS_FAILED(rv))
_retval.Truncate();
return rv;
}
/* attribute PRBool followLinks; */
NS_IMETHODIMP
nsLocalFile::GetFollowLinks(PRBool *aFollowLinks)
{
*aFollowLinks = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::SetFollowLinks(PRBool aFollowLinks)
{
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::GetDirectoryEntries(nsISimpleEnumerator **entries)
{
nsCOMPtr<nsDirEnumeratorUnix> dir = new nsDirEnumeratorUnix();
if (!dir)
return NS_ERROR_OUT_OF_MEMORY;
nsresult rv = dir->Init(this, PR_FALSE);
if (NS_FAILED(rv))
return rv;
/* QI needed? If not, need to ADDREF. */
return dir->QueryInterface(NS_GET_IID(nsISimpleEnumerator),
(void **)entries);
}
NS_IMETHODIMP
nsLocalFile::Load(PRLibrary **_retval)
{
CHECK_mPath();
NS_ENSURE_ARG_POINTER(_retval);
NS_TIMELINE_START_TIMER("PR_LoadLibrary");
*_retval = PR_LoadLibrary(mPath.get());
NS_TIMELINE_STOP_TIMER("PR_LoadLibrary");
NS_TIMELINE_MARK_TIMER1("PR_LoadLibrary", mPath.get());
if (!*_retval)
return NS_ERROR_FAILURE;
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::GetPersistentDescriptor(nsACString &aPersistentDescriptor)
{
return GetNativePath(aPersistentDescriptor);
}
NS_IMETHODIMP
nsLocalFile::SetPersistentDescriptor(const nsACString &aPersistentDescriptor)
{
return InitWithNativePath(aPersistentDescriptor);
}
#ifdef XP_BEOS
NS_IMETHODIMP
nsLocalFile::Reveal()
{
BPath bPath(mPath.get());
bPath.GetParent(&bPath);
entry_ref ref;
get_ref_for_path(bPath.Path(),&ref);
BMessage message(B_REFS_RECEIVED);
message.AddRef("refs",&ref);
BMessenger messenger("application/x-vnd.Be-TRAK");
messenger.SendMessage(&message);
return NS_OK;
}
NS_IMETHODIMP
nsLocalFile::Launch()
{
entry_ref ref;
get_ref_for_path (mPath.get(), &ref);
be_roster->Launch (&ref);
return NS_OK;
}
#else
NS_IMETHODIMP
nsLocalFile::Reveal()
{
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsLocalFile::Launch()
{
return NS_ERROR_FAILURE;
}
#endif
nsresult
NS_NewNativeLocalFile(const nsACString &path, PRBool followSymlinks, nsILocalFile **result)
{
nsLocalFile *file = new nsLocalFile();
if (!file)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(file);
if (!path.IsEmpty()) {
nsresult rv = file->InitWithNativePath(path);
if (NS_FAILED(rv)) {
NS_RELEASE(file);
return rv;
}
}
*result = file;
return NS_OK;
}
//-----------------------------------------------------------------------------
// unicode support
//-----------------------------------------------------------------------------
#define SET_UCS(func, ucsArg) \
{ \
nsCAutoString buf; \
nsresult rv = NS_CopyUnicodeToNative(ucsArg, buf); \
if (NS_FAILED(rv)) \
return rv; \
return (func)(buf); \
}
#define GET_UCS(func, ucsArg) \
{ \
nsCAutoString buf; \
nsresult rv = (func)(buf); \
if (NS_FAILED(rv)) return rv; \
return NS_CopyNativeToUnicode(buf, ucsArg); \
}
#define SET_UCS_2ARGS_2(func, opaqueArg, ucsArg) \
{ \
nsCAutoString buf; \
nsresult rv = NS_CopyUnicodeToNative(ucsArg, buf); \
if (NS_FAILED(rv)) \
return rv; \
return (func)(opaqueArg, buf); \
}
// Unicode interface Wrapper
nsresult
nsLocalFile::InitWithPath(const nsAString &filePath)
{
SET_UCS(InitWithNativePath, filePath);
}
nsresult
nsLocalFile::Append(const nsAString &node)
{
SET_UCS(AppendNative, node);
}
nsresult
nsLocalFile::AppendRelativePath(const nsAString &node)
{
SET_UCS(AppendRelativeNativePath, node);
}
nsresult
nsLocalFile::GetLeafName(nsAString &aLeafName)
{
GET_UCS(GetNativeLeafName, aLeafName);
}
nsresult
nsLocalFile::SetLeafName(const nsAString &aLeafName)
{
SET_UCS(SetNativeLeafName, aLeafName);
}
nsresult
nsLocalFile::GetPath(nsAString &_retval)
{
return NS_CopyNativeToUnicode(mPath, _retval);
}
nsresult
nsLocalFile::CopyTo(nsIFile *newParentDir, const nsAString &newName)
{
SET_UCS_2ARGS_2(CopyToNative , newParentDir, newName);
}
nsresult
nsLocalFile::CopyToFollowingLinks(nsIFile *newParentDir, const nsAString &newName)
{
SET_UCS_2ARGS_2(CopyToFollowingLinksNative , newParentDir, newName);
}
nsresult
nsLocalFile::MoveTo(nsIFile *newParentDir, const nsAString &newName)
{
SET_UCS_2ARGS_2(MoveToNative, newParentDir, newName);
}
nsresult
nsLocalFile::GetTarget(nsAString &_retval)
{
GET_UCS(GetNativeTarget, _retval);
}
nsresult
NS_NewLocalFile(const nsAString &path, PRBool followLinks, nsILocalFile* *result)
{
nsCAutoString buf;
nsresult rv = NS_CopyUnicodeToNative(path, buf);
if (NS_FAILED(rv))
return rv;
return NS_NewNativeLocalFile(buf, followLinks, result);
}
//-----------------------------------------------------------------------------
// global init/shutdown
//-----------------------------------------------------------------------------
void
nsLocalFile::GlobalInit()
{
}
void
nsLocalFile::GlobalShutdown()
{
}
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