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Diffstat (limited to 'sal/osl/unx/file_misc.cxx')
| -rw-r--r-- | sal/osl/unx/file_misc.cxx | 1036 |
1 files changed, 1036 insertions, 0 deletions
diff --git a/sal/osl/unx/file_misc.cxx b/sal/osl/unx/file_misc.cxx new file mode 100644 index 0000000000..752c85393b --- /dev/null +++ b/sal/osl/unx/file_misc.cxx @@ -0,0 +1,1036 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 . + */ + +#include <osl/detail/file.h> + +#include <osl/diagnose.h> +#include <rtl/string.hxx> +#include <sal/log.hxx> + +#include "system.hxx" +#include "file_impl.hxx" +#include "file_error_transl.hxx" +#include "file_path_helper.hxx" +#include "file_url.hxx" +#include "uunxapi.hxx" +#include "readwrite_helper.hxx" +#include "unixerrnostring.hxx" + +#include <errno.h> +#include <dirent.h> +#include <fcntl.h> +#include <limits.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <utime.h> +#include <sys/stat.h> + +#include <algorithm> +#include <new> + +#ifdef ANDROID +#include <osl/detail/android-bootstrap.h> +#endif + +/************************************************************************ + * TODO + * + * - Fix: check for corresponding struct sizes in exported functions + * - check size/use of oslDirectory + * - check size/use of oslDirectoryItem + ***********************************************************************/ + +namespace { + +struct DirectoryImpl +{ + OString strPath; /* holds native directory path */ + DIR* pDirStruct; +#ifdef ANDROID + enum Kind + { + KIND_DIRENT = 1, + KIND_ASSETS = 2 + }; + int eKind; + lo_apk_dir* pApkDirStruct; +#endif +}; + +} + +DirectoryItem_Impl::DirectoryItem_Impl( + OString strFilePath, unsigned char DType) + : m_strFilePath (std::move(strFilePath)), + m_RefCount (1), + m_DType (DType) +{ +} +DirectoryItem_Impl::~DirectoryItem_Impl() +{ +} + +void DirectoryItem_Impl::acquire() +{ + ++m_RefCount; +} +void DirectoryItem_Impl::release() +{ + if (--m_RefCount == 0) + delete this; +} + +oslFileType DirectoryItem_Impl::getFileType() const +{ + switch (m_DType) + { +#ifdef _DIRENT_HAVE_D_TYPE + case DT_LNK: + return osl_File_Type_Link; + case DT_DIR: + return osl_File_Type_Directory; + case DT_REG: + return osl_File_Type_Regular; + case DT_FIFO: + return osl_File_Type_Fifo; + case DT_SOCK: + return osl_File_Type_Socket; + case DT_CHR: + case DT_BLK: + return osl_File_Type_Special; +#endif /* _DIRENT_HAVE_D_TYPE */ + default: + break; + } + return osl_File_Type_Unknown; +} + +static oslFileError osl_psz_createDirectory( + char const * pszPath, sal_uInt32 flags); +static oslFileError osl_psz_removeDirectory(const char* pszPath); + +oslFileError SAL_CALL osl_openDirectory(rtl_uString* ustrDirectoryURL, oslDirectory* pDirectory) +{ + oslFileError eRet; + + OString path; + + if ((ustrDirectoryURL == nullptr) || (ustrDirectoryURL->length == 0) || (pDirectory == nullptr)) + return osl_File_E_INVAL; + + /* convert file URL to system path */ + eRet = osl::detail::convertUrlToPathname(OUString::unacquired(&ustrDirectoryURL), &path); + + if( eRet != osl_File_E_None ) + return eRet; + + osl_systemPathRemoveSeparator(path.pData); + +#ifdef MACOSX + { + auto const n = std::max(int(path.getLength() + 1), int(PATH_MAX)); + auto const tmp = std::make_unique<char[]>(n); + std::strcpy(tmp.get(), path.getStr()); + if (macxp_resolveAlias(tmp.get(), n) != 0) { + return oslTranslateFileError(errno); + } + path = OString(tmp.get(), std::strlen(tmp.get())); + } +#endif /* MACOSX */ + +#ifdef ANDROID + if( strncmp( path.getStr(), "/assets/", sizeof( "/assets/" ) - 1) == 0 ) + { + lo_apk_dir *pdir = lo_apk_opendir( path.getStr() ); + + if( pdir ) + { + DirectoryImpl* pDirImpl = new(std::nothrow) DirectoryImpl; + + if( pDirImpl ) + { + pDirImpl->eKind = DirectoryImpl::KIND_ASSETS; + pDirImpl->pApkDirStruct = pdir; + pDirImpl->strPath = path; + + *pDirectory = (oslDirectory) pDirImpl; + return osl_File_E_None; + } + else + { + errno = ENOMEM; + lo_apk_closedir( pdir ); + } + } + } + else +#endif + { + /* open directory */ + DIR *pdir = opendir( path.getStr() ); + + if( pdir ) + { + SAL_INFO("sal.file", "opendir(" << path << ") => " << pdir); + + /* create and initialize impl structure */ + DirectoryImpl* pDirImpl = new(std::nothrow) DirectoryImpl; + + if( pDirImpl ) + { + pDirImpl->pDirStruct = pdir; + pDirImpl->strPath = path; +#ifdef ANDROID + pDirImpl->eKind = DirectoryImpl::KIND_DIRENT; +#endif + *pDirectory = static_cast<oslDirectory>(pDirImpl); + return osl_File_E_None; + } + errno = ENOMEM; + closedir( pdir ); + } + else + { + int e = errno; + SAL_INFO("sal.file", "opendir(" << path << "): " << UnixErrnoString(e)); + // Restore errno after possible modification by SAL_INFO above + errno = e; + } + } + + return oslTranslateFileError(errno); +} + +oslFileError SAL_CALL osl_closeDirectory(oslDirectory pDirectory) +{ + SAL_WARN_IF(!pDirectory, "sal.file", "pDirectory is nullptr"); + DirectoryImpl* pDirImpl = static_cast<DirectoryImpl*>(pDirectory); + oslFileError err = osl_File_E_None; + + if (!pDirImpl) + return osl_File_E_INVAL; + +#ifdef ANDROID + if (pDirImpl->eKind == DirectoryImpl::KIND_ASSETS) + { + if (lo_apk_closedir(pDirImpl->pApkDirStruct)) + err = osl_File_E_IO; + } + else +#endif + { + if (closedir( pDirImpl->pDirStruct) != 0) + { + int e = errno; + SAL_INFO("sal.file", "closedir(" << pDirImpl->pDirStruct << "): " << UnixErrnoString(e)); + err = oslTranslateFileError(e); + } + else + SAL_INFO("sal.file", "closedir(" << pDirImpl->pDirStruct << "): OK"); + } + + delete pDirImpl; + + return err; +} + +/********************************************** + * osl_readdir_impl_ + * + * readdir wrapper, filters out "." and ".." + * on request + *********************************************/ + +static struct dirent* osl_readdir_impl_(DIR* pdir) +{ + struct dirent* pdirent; + + while ((pdirent = readdir(pdir)) != nullptr) + { + if ((strcmp(pdirent->d_name, ".") == 0) || (strcmp(pdirent->d_name, "..") == 0)) + continue; + break; + } + + return pdirent; +} + +oslFileError SAL_CALL osl_getNextDirectoryItem(oslDirectory pDirectory, + oslDirectoryItem* pItem, SAL_UNUSED_PARAMETER sal_uInt32 /*uHint*/) +{ + SAL_WARN_IF(!pDirectory, "sal.file", "pDirectory is nullptr"); + SAL_WARN_IF(!pItem, "sal.file", "pItem is nullptr"); + + DirectoryImpl* pDirImpl = static_cast<DirectoryImpl*>(pDirectory); + OString strFileName; + struct dirent* pEntry; + + if ((pDirectory == nullptr) || (pItem == nullptr)) + return osl_File_E_INVAL; + +#ifdef ANDROID + if(pDirImpl->eKind == DirectoryImpl::KIND_ASSETS) + { + pEntry = lo_apk_readdir(pDirImpl->pApkDirStruct); + } + else +#endif + { + pEntry = osl_readdir_impl_(pDirImpl->pDirStruct); + } + + if (!pEntry) + return osl_File_E_NOENT; + + char const * filename = pEntry->d_name; + +#if defined(MACOSX) + // convert decomposed filename to precomposed UTF-8 + char composed_name[BUFSIZ]; + CFMutableStringRef strRef = CFStringCreateMutable(nullptr, 0 ); + CFStringAppendCString(strRef, filename, kCFStringEncodingUTF8); // UTF8 is default on Mac OSX + CFStringNormalize(strRef, kCFStringNormalizationFormC); + CFStringGetCString(strRef, composed_name, BUFSIZ, kCFStringEncodingUTF8); + CFRelease(strRef); + filename = composed_name; +#endif + + strFileName = OString(filename, strlen(filename)); + + auto const strFilePath = osl::systemPathMakeAbsolutePath(pDirImpl->strPath, strFileName); + + DirectoryItem_Impl* pImpl = static_cast< DirectoryItem_Impl* >(*pItem); + if (pImpl) + pImpl->release(); +#ifdef _DIRENT_HAVE_D_TYPE + pImpl = new DirectoryItem_Impl(strFilePath, pEntry->d_type); +#else + pImpl = new DirectoryItem_Impl(strFilePath); +#endif /* _DIRENT_HAVE_D_TYPE */ + *pItem = pImpl; + + return osl_File_E_None; +} + +oslFileError SAL_CALL osl_getDirectoryItem(rtl_uString* ustrFileURL, oslDirectoryItem* pItem) +{ + OString strSystemPath; + oslFileError osl_error = osl_File_E_INVAL; + + if ((!ustrFileURL) || (ustrFileURL->length == 0) || (!pItem)) + return osl_File_E_INVAL; + + osl_error = osl::detail::convertUrlToPathname(OUString::unacquired(&ustrFileURL), &strSystemPath); + if (osl_error != osl_File_E_None) + return osl_error; + + osl_systemPathRemoveSeparator(strSystemPath.pData); + + if (osl::access(strSystemPath, F_OK) == -1) + { + osl_error = oslTranslateFileError(errno); + } + else + { + *pItem = new DirectoryItem_Impl(std::move(strSystemPath)); + } + + return osl_error; +} + +oslFileError SAL_CALL osl_acquireDirectoryItem( oslDirectoryItem Item ) +{ + DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(Item); + if (pImpl == nullptr) + return osl_File_E_INVAL; + + pImpl->acquire(); + return osl_File_E_None; +} + +oslFileError SAL_CALL osl_releaseDirectoryItem( oslDirectoryItem Item ) +{ + DirectoryItem_Impl * pImpl = static_cast< DirectoryItem_Impl* >(Item); + if (pImpl == nullptr) + return osl_File_E_INVAL; + + pImpl->release(); + return osl_File_E_None; +} + +oslFileError SAL_CALL osl_createDirectory( rtl_uString* ustrDirectoryURL ) +{ + return osl_createDirectoryWithFlags( + ustrDirectoryURL, osl_File_OpenFlag_Read | osl_File_OpenFlag_Write); +} + +oslFileError osl_createDirectoryWithFlags( + rtl_uString * ustrDirectoryURL, sal_uInt32 flags) +{ + char path[PATH_MAX]; + oslFileError eRet; + + SAL_WARN_IF((!ustrDirectoryURL) || (ustrDirectoryURL->length == 0), + "sal.file", "Invalid directory URL"); + + /* convert directory url to system path */ + eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL ); + if( eRet != osl_File_E_None ) + return eRet; + +#ifdef MACOSX + if ( macxp_resolveAlias( path, PATH_MAX ) != 0 ) + return oslTranslateFileError( errno ); +#endif/* MACOSX */ + + return osl_psz_createDirectory( path, flags ); +} + +oslFileError SAL_CALL osl_removeDirectory( rtl_uString* ustrDirectoryURL ) +{ + char path[PATH_MAX]; + oslFileError eRet; + + SAL_WARN_IF((!ustrDirectoryURL) || (ustrDirectoryURL->length == 0), + "sal.file", "Invalid directory URL"); + + /* convert directory url to system path */ + eRet = FileURLToPath( path, PATH_MAX, ustrDirectoryURL ); + if( eRet != osl_File_E_None ) + return eRet; + +#ifdef MACOSX + if ( macxp_resolveAlias( path, PATH_MAX ) != 0 ) + return oslTranslateFileError( errno ); +#endif/* MACOSX */ + + return osl_psz_removeDirectory( path ); +} + +oslFileError osl_psz_createDirectory(char const * pszPath, sal_uInt32 flags) +{ + int nRet=0; + int mode + = (((flags & osl_File_OpenFlag_Read) == 0 + ? 0 + : ((flags & osl_File_OpenFlag_Private) == 0 + ? S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH + : S_IRUSR | S_IXUSR)) + | ((flags & osl_File_OpenFlag_Write) == 0 + ? 0 + : ((flags & osl_File_OpenFlag_Private) == 0 + ? S_IWUSR | S_IWGRP | S_IWOTH + : S_IWUSR))); + + nRet = mkdir(pszPath,mode); + + if ( nRet < 0 ) + { + nRet=errno; + SAL_INFO("sal.file", "mkdir(" << pszPath << ",0" << std::oct << mode << std::dec << "): " << UnixErrnoString(nRet)); + return oslTranslateFileError(nRet); + } + else + SAL_INFO("sal.file", "mkdir(" << pszPath << ",0" << std::oct << mode << std::dec << "): OK"); + + return osl_File_E_None; +} + +static oslFileError osl_psz_removeDirectory( const char* pszPath ) +{ + int nRet = rmdir(pszPath); + + if ( nRet < 0 ) + { + nRet=errno; + SAL_INFO("sal.file", "rmdir(" << pszPath << "): " << UnixErrnoString(nRet)); + return oslTranslateFileError(nRet); + } + else + SAL_INFO("sal.file", "rmdir(" << pszPath << "): OK"); + + return osl_File_E_None; +} + +static int path_make_parent(char* path) +{ + int i = rtl_str_lastIndexOfChar(path, '/'); + + if (i > 0) + { + *(path + i) = 0; + return i; + } + return 0; +} + +static int create_dir_with_callback( + char* directory_path, + oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc, + void* pData) +{ + if (osl::mkdir(directory_path, S_IRWXU | S_IRWXG | S_IRWXO) == 0) + { + if (aDirectoryCreationCallbackFunc) + { + OUString url; + osl::detail::convertPathnameToUrl(directory_path, &url); + aDirectoryCreationCallbackFunc(pData, url.pData); + } + return 0; + } + return errno; +} + +static oslFileError create_dir_recursively_( + char* dir_path, + oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc, + void* pData) +{ + OSL_PRECOND((rtl_str_getLength(dir_path) > 0) && ((dir_path + (rtl_str_getLength(dir_path) - 1)) != (dir_path + rtl_str_lastIndexOfChar(dir_path, '/'))), + "Path must not end with a slash"); + + int native_err = create_dir_with_callback( + dir_path, aDirectoryCreationCallbackFunc, pData); + + if (native_err == 0) + return osl_File_E_None; + + if (native_err != ENOENT) + return oslTranslateFileError(native_err); + + // we step back until '/a_dir' at maximum because + // we should get an error unequal ENOENT when + // we try to create 'a_dir' at '/' and would so + // return before + int pos = path_make_parent(dir_path); + + oslFileError osl_error = create_dir_recursively_( + dir_path, aDirectoryCreationCallbackFunc, pData); + + if (osl_error != osl_File_E_None && osl_error != osl_File_E_EXIST) + return osl_error; + + dir_path[pos] = '/'; + + return create_dir_recursively_(dir_path, aDirectoryCreationCallbackFunc, pData); +} + +oslFileError SAL_CALL osl_createDirectoryPath( + rtl_uString* aDirectoryUrl, + oslDirectoryCreationCallbackFunc aDirectoryCreationCallbackFunc, + void* pData) +{ + if (aDirectoryUrl == nullptr) + return osl_File_E_INVAL; + + OString sys_path; + oslFileError osl_error = osl::detail::convertUrlToPathname( + OUString::unacquired(&aDirectoryUrl), &sys_path); + + if (osl_error != osl_File_E_None) + return osl_error; + + osl::systemPathRemoveSeparator(sys_path); + + // const_cast because sys_path is a local copy which we want to modify inplace instead of + // copy it into another buffer on the heap again + return create_dir_recursively_(sys_path.pData->buffer, aDirectoryCreationCallbackFunc, pData); +} + +static oslFileError osl_unlinkFile(const char* pszPath); +static oslFileError osl_psz_copyFile(const char* pszPath, const char* pszDestPath, bool preserveMetadata); +static oslFileError osl_psz_moveFile(const char* pszPath, const char* pszDestPath); + +static oslFileError oslDoCopy(const char* pszSourceFileName, const char* pszDestFileName, mode_t nMode, size_t nSourceSize, bool DestFileExists); +static void attemptChangeMetadata(const char* pszFileName, mode_t nMode, time_t nAcTime, time_t nModTime, uid_t nUID, gid_t nGID); +static int oslDoCopyLink(const char* pszSourceFileName, const char* pszDestFileName); +static int oslDoCopyFile(const char* pszSourceFileName, const char* pszDestFileName, size_t nSourceSize, mode_t mode); +static oslFileError oslDoMoveFile(const char* pszPath, const char* pszDestPath); + +oslFileError SAL_CALL osl_moveFile( rtl_uString* ustrFileURL, rtl_uString* ustrDestURL ) +{ + char srcPath[PATH_MAX]; + char destPath[PATH_MAX]; + oslFileError eRet; + + SAL_WARN_IF((!ustrFileURL) || (ustrFileURL->length == 0), "sal.file", "Invalid source file URL"); + SAL_WARN_IF((!ustrDestURL) || (ustrDestURL->length == 0), "sal.file", "Invalid destination file URL"); + + /* convert source url to system path */ + eRet = FileURLToPath( srcPath, PATH_MAX, ustrFileURL ); + if( eRet != osl_File_E_None ) + return eRet; + + /* convert destination url to system path */ + eRet = FileURLToPath( destPath, PATH_MAX, ustrDestURL ); + if( eRet != osl_File_E_None ) + return eRet; + +#ifdef MACOSX + if ( macxp_resolveAlias( srcPath, PATH_MAX ) != 0 || macxp_resolveAlias( destPath, PATH_MAX ) != 0 ) + return oslTranslateFileError( errno ); +#endif/* MACOSX */ + + return oslDoMoveFile( srcPath, destPath ); +} + +oslFileError SAL_CALL osl_replaceFile(rtl_uString* ustrFileURL, rtl_uString* ustrDestURL) +{ + int nGid = -1; + char destPath[PATH_MAX]; + oslFileError eRet = FileURLToPath(destPath, PATH_MAX, ustrDestURL); + if (eRet == osl_File_E_None) + { + struct stat aFileStat; + // coverity[fs_check_call] - unavoidable TOCTOU + int nRet = stat(destPath, &aFileStat); + if (nRet == -1) + { + nRet = errno; + SAL_INFO("sal.file", "stat(" << destPath << "): " << UnixErrnoString(nRet)); + } + else + { + nGid = aFileStat.st_gid; + } + } + + eRet = osl_moveFile(ustrFileURL, ustrDestURL); + + if (eRet == osl_File_E_None && nGid != -1) + { + int nRet = chown(destPath, -1, nGid); + if (nRet == -1) + { + nRet = errno; + SAL_INFO("sal.file", + "chown(" << destPath << "-1, " << nGid << "): " << UnixErrnoString(nRet)); + } + } + + return eRet; +} + +oslFileError SAL_CALL osl_copyFile( rtl_uString* ustrFileURL, rtl_uString* ustrDestURL ) +{ + char srcPath[PATH_MAX]; + char destPath[PATH_MAX]; + oslFileError eRet; + + SAL_WARN_IF((!ustrFileURL) || (ustrFileURL->length == 0), "sal.file", "Invalid source file URL"); + SAL_WARN_IF((!ustrDestURL) || (ustrDestURL->length == 0), "sal.file", "Invalid destination file URL"); + + /* convert source url to system path */ + eRet = FileURLToPath( srcPath, PATH_MAX, ustrFileURL ); + if( eRet != osl_File_E_None ) + return eRet; + + /* convert destination url to system path */ + eRet = FileURLToPath( destPath, PATH_MAX, ustrDestURL ); + if( eRet != osl_File_E_None ) + return eRet; + +#ifdef MACOSX + if ( macxp_resolveAlias( srcPath, PATH_MAX ) != 0 || macxp_resolveAlias( destPath, PATH_MAX ) != 0 ) + return oslTranslateFileError( errno ); +#endif/* MACOSX */ + + return osl_psz_copyFile( srcPath, destPath, false ); +} + +oslFileError SAL_CALL osl_removeFile(rtl_uString* ustrFileURL) +{ + char path[PATH_MAX]; + oslFileError eRet; + + SAL_WARN_IF(!ustrFileURL || ustrFileURL->length == 0, "sal.file", "Invalid file URL"); + + /* convert file url to system path */ + eRet = FileURLToPath(path, PATH_MAX, ustrFileURL); + if (eRet != osl_File_E_None) + return eRet; + +#ifdef MACOSX + if (macxp_resolveAlias(path, PATH_MAX) != 0) + return oslTranslateFileError(errno); +#endif/* MACOSX */ + + return osl_unlinkFile(path); +} + +static oslFileError oslDoMoveFile(const char* pszPath, const char* pszDestPath) +{ + oslFileError tErr = osl_psz_moveFile(pszPath,pszDestPath); + if (tErr == osl_File_E_None) + return tErr; + + if (tErr != osl_File_E_XDEV) + return tErr; + + tErr = osl_psz_copyFile(pszPath,pszDestPath, true); + + if (tErr != osl_File_E_None) + { + osl_unlinkFile(pszDestPath); + return tErr; + } + + tErr = osl_unlinkFile(pszPath); + + return tErr; +} + +static oslFileError osl_unlinkFile(const char* pszPath) +{ + int nRet=0; + struct stat aStat; + + nRet = lstat_c(pszPath,&aStat); + if (nRet < 0) + { + nRet=errno; + return oslTranslateFileError(nRet); + } + + if (S_ISDIR(aStat.st_mode)) + return osl_File_E_ISDIR; + + nRet = unlink(pszPath); + if (nRet < 0) + { + nRet=errno; + SAL_INFO("sal.file", "unlink(" << pszPath << "): " << UnixErrnoString(nRet)); + return oslTranslateFileError(nRet); + } + else + SAL_INFO("sal.file", "unlink(" << pszPath << "): OK"); + + return osl_File_E_None; +} + +static oslFileError osl_psz_moveFile(const char* pszPath, const char* pszDestPath) +{ + int nRet = rename(pszPath,pszDestPath); + + if (nRet < 0) + { + nRet=errno; + SAL_INFO("sal.file", "rename(" << pszPath << "," << pszDestPath << "): " << UnixErrnoString(nRet)); + return oslTranslateFileError(nRet); + } + else + SAL_INFO("sal.file", "rename(" << pszPath << "," << pszDestPath << "): OK"); + + return osl_File_E_None; +} + +static oslFileError osl_psz_copyFile( const char* pszPath, const char* pszDestPath, bool preserveMetadata ) +{ + time_t nAcTime=0; + time_t nModTime=0; + uid_t nUID=0; + gid_t nGID=0; + int nRet=0; + mode_t nMode=0; + struct stat aFileStat; + oslFileError tErr=osl_File_E_invalidError; + size_t nSourceSize=0; + bool DestFileExists=true; + + /* mfe: does the source file really exists? */ + nRet = lstat_c(pszPath,&aFileStat); + + if (nRet < 0) + { + nRet=errno; + return oslTranslateFileError(nRet); + } + + /* we do only copy files here */ + if (S_ISDIR(aFileStat.st_mode)) + return osl_File_E_ISDIR; + + nSourceSize = static_cast< size_t >(aFileStat.st_size); + nMode = aFileStat.st_mode; + nAcTime = aFileStat.st_atime; + nModTime = aFileStat.st_mtime; + nUID = aFileStat.st_uid; + nGID = aFileStat.st_gid; + + nRet = stat_c(pszDestPath,&aFileStat); + if (nRet < 0) + { + nRet=errno; + +#ifdef IOS + // Checking for nonexistent files at least in the iCloud cache directory (like + // "/private/var/mobile/Library/Mobile Documents/com~apple~CloudDocs/helloodt0.odt" fails + // with EPERM, not ENOENT. + if (nRet == EPERM) + DestFileExists=false; +#endif + + if (nRet == ENOENT) + DestFileExists=false; + } + + /* mfe: the destination file must not be a directory! */ + if (nRet == 0 && S_ISDIR(aFileStat.st_mode)) + return osl_File_E_ISDIR; + + /* mfe: file does not exists or is no dir */ + + tErr = oslDoCopy(pszPath, pszDestPath, nMode, nSourceSize, DestFileExists); + + if (tErr != osl_File_E_None) + return tErr; + + if (preserveMetadata) + attemptChangeMetadata(pszDestPath, nMode, nAcTime, nModTime, nUID, nGID); + + return tErr; +} + +static oslFileError oslDoCopy(const char* pszSourceFileName, const char* pszDestFileName, mode_t nMode, size_t nSourceSize, bool DestFileExists) +{ + int nRet=0; + + OString tmpDestFile; + if ( DestFileExists ) + { + //TODO: better pick a temp file name instead of adding .osl-tmp: + // use the destination file to avoid EXDEV /* Cross-device link */ + tmpDestFile = pszDestFileName + OString::Concat(".osl-tmp"); + if (rename(pszDestFileName, tmpDestFile.getStr()) != 0) + { + int e = errno; + SAL_INFO("sal.file", "rename(" << pszDestFileName << ", " << tmpDestFile + << "): " << UnixErrnoString(e)); + if (e == ENOENT) + { + DestFileExists = false; + } + else + { + return osl_File_E_EXIST; // for want of a better error code + } + } + else + { + SAL_INFO("sal.file", "rename(" << pszDestFileName << ", " << tmpDestFile + << "): OK"); + } + } + + if ( S_ISREG(nMode) ) + { + /* copy SourceFile to DestFile */ + nRet = oslDoCopyFile(pszSourceFileName,pszDestFileName,nSourceSize, nMode); + } + else if ( S_ISLNK(nMode) ) + { + nRet = oslDoCopyLink(pszSourceFileName,pszDestFileName); + } + else + { + nRet = EINVAL; + } + + if ( nRet > 0 && DestFileExists ) + { + if (unlink(pszDestFileName) != 0) + { + int e = errno; + SAL_INFO("sal.file", "unlink(" << pszDestFileName << "): " << UnixErrnoString(e)); + } + else + SAL_INFO("sal.file", "unlink(" << pszDestFileName << "): OK"); + + if (rename(tmpDestFile.getStr(), pszDestFileName) != 0) + { + int e = errno; + SAL_INFO("sal.file", "rename(" << tmpDestFile << ", " << pszDestFileName + << "): " << UnixErrnoString(e)); + } + else + SAL_INFO("sal.file", "rename(" << tmpDestFile << ", " << pszDestFileName << "): OK"); + } + + if ( nRet > 0 ) + { + return oslTranslateFileError(nRet); + } + + if ( DestFileExists ) + { + unlink(tmpDestFile.getStr()); + } + + return osl_File_E_None; +} + +void attemptChangeMetadata( const char* pszFileName, mode_t nMode, time_t nAcTime, time_t nModTime, uid_t nUID, gid_t nGID) +{ + struct utimbuf aTimeBuffer; + +#if !defined AT_FDCWD + if (!S_ISLNK(nMode) && chmod(pszFileName, nMode) < 0) +#else + if ( fchmodat(AT_FDCWD, pszFileName, nMode, AT_SYMLINK_NOFOLLOW) < 0 ) +#endif + { + int e = errno; + SAL_INFO("sal.file", "chmod(" << pszFileName << ",0" << std::oct << nMode << std::dec <<"): " << UnixErrnoString(e)); + } + else + SAL_INFO("sal.file", "chmod(" << pszFileName << ",0" << std::oct << nMode << std::dec <<"): OK"); + + // No way to change utime of a symlink itself: + if (!S_ISLNK(nMode)) + { + aTimeBuffer.actime=nAcTime; + aTimeBuffer.modtime=nModTime; + if ( utime(pszFileName,&aTimeBuffer) < 0 ) + { + int e = errno; + SAL_INFO("sal.file", "utime(" << pszFileName << "): errno " << e); + } + } + + if ( nUID != getuid() ) + { + nUID=getuid(); + } + if ( lchown(pszFileName,nUID,nGID) < 0 ) + { + int e = errno; + SAL_INFO("sal.file", "lchown(" << pszFileName << "): errno " << e); + } + else + SAL_INFO("sal.file", "lchown(" << pszFileName << "): OK"); +} + +static int oslDoCopyLink(const char* pszSourceFileName, const char* pszDestFileName) +{ + int nRet=0; + + /* mfe: if dest file is symbolic link remove the link and place the file instead (hro says so) */ + /* mfe: if source is a link copy the link and not the file it points to (hro says so) */ + char pszLinkContent[PATH_MAX+1]; + + pszLinkContent[0] = '\0'; + + nRet = readlink(pszSourceFileName,pszLinkContent,PATH_MAX); + + if ( nRet < 0 ) + { + nRet=errno; + return nRet; + } + + pszLinkContent[ nRet ] = 0; + + nRet = symlink(pszLinkContent,pszDestFileName); + + if ( nRet < 0 ) + { + nRet=errno; + return nRet; + } + + return 0; +} + +static int oslDoCopyFile(const char* pszSourceFileName, const char* pszDestFileName, size_t nSourceSize, mode_t mode) +{ + oslFileHandle SourceFileFH=nullptr; + int DestFileFD=0; + int nRet=0; + + if (openFilePath(pszSourceFileName, + &SourceFileFH, + osl_File_OpenFlag_Read|osl_File_OpenFlag_NoLock|osl_File_OpenFlag_NoExcl, mode_t(-1)) != osl_File_E_None) + { + // Let's hope errno is still set relevantly after openFilePath... + nRet=errno; + return nRet; + } + + DestFileFD=open(pszDestFileName, O_WRONLY | O_CREAT, mode); + + if ( DestFileFD < 0 ) + { + nRet=errno; + SAL_INFO("sal.file", "open(" << pszDestFileName << ",O_WRONLY|O_CREAT,0" << std::oct << mode << std::dec << "): " << UnixErrnoString(nRet)); + osl_closeFile(SourceFileFH); + return nRet; + } + else + SAL_INFO("sal.file", "open(" << pszDestFileName << ",O_WRONLY|O_CREAT,0" << std::oct << mode << std::dec << "): OK"); + + size_t nRemains = nSourceSize; + + if ( nRemains ) + { + /* mmap has problems, try the direct streaming */ + char pBuffer[0x7FFF]; + + do + { + size_t nToRead = std::min( sizeof(pBuffer), nRemains ); + sal_uInt64 nRead; + bool succeeded; + if ( osl_readFile( SourceFileFH, pBuffer, nToRead, &nRead ) != osl_File_E_None || nRead > nToRead || nRead == 0 ) + break; + + succeeded = safeWrite( DestFileFD, pBuffer, nRead ); + if ( !succeeded ) + break; + + // We know nRead <= nToRead, so it must fit in a size_t + nRemains -= static_cast<size_t>(nRead); + } + while( nRemains ); + } + + if ( nRemains ) + { + if ( errno ) + nRet = errno; + else + nRet = ENOSPC; + } + + osl_closeFile( SourceFileFH ); + if ( close( DestFileFD ) == -1 ) + { + int e = errno; + SAL_INFO("sal.file", "close(" << DestFileFD << "): " << UnixErrnoString(e)); + if ( nRet == 0 ) + nRet = e; + } + else + SAL_INFO("sal.file", "close(" << DestFileFD << "): OK"); + + return nRet; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |