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-rw-r--r--sal/osl/unx/tempfile.cxx337
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diff --git a/sal/osl/unx/tempfile.cxx b/sal/osl/unx/tempfile.cxx
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+++ b/sal/osl/unx/tempfile.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include "system.hxx"
+#include <osl/file.h>
+#include <osl/thread.h>
+#include <rtl/ustrbuf.h>
+#include <osl/diagnose.h>
+#include <sal/macros.h>
+
+#include "file_url.hxx"
+#include "file_impl.hxx"
+
+#include <cassert>
+
+oslFileError SAL_CALL osl_getTempDirURL( rtl_uString** pustrTempDir )
+{
+ oslFileError error;
+ /* described in environ(7) */
+ const char *pValue = getenv( "TMPDIR" );
+ rtl_uString *ustrTempPath = nullptr;
+
+ if ( !pValue )
+ pValue = getenv( "TEMP" );
+
+ if ( !pValue )
+ pValue = getenv( "TMP" );
+
+ if ( !pValue )
+ pValue = "/tmp";
+
+ rtl_string2UString( &ustrTempPath, pValue, strlen( pValue ), osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
+ assert(ustrTempPath);
+ error = osl_getFileURLFromSystemPath( ustrTempPath, pustrTempDir );
+ rtl_uString_release( ustrTempPath );
+
+ return error;
+}
+
+/******************************************************************
+ * Generates a random unique file name. We're using the scheme
+ * from the standard c-lib function mkstemp to generate a more
+ * or less random unique file name
+ *
+ * @param rand_name
+ * receives the random name
+ ******************************************************************/
+
+static const char LETTERS[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
+static const int COUNT_OF_LETTERS = SAL_N_ELEMENTS(LETTERS) - 1;
+
+#define RAND_NAME_LENGTH 6
+
+static void osl_gen_random_name_impl_(rtl_uString** rand_name)
+{
+ static uint64_t value;
+
+ char buffer[RAND_NAME_LENGTH];
+ struct timeval tv;
+ uint64_t v;
+ int i;
+
+ gettimeofday(&tv, nullptr);
+
+ value += (static_cast<uint64_t>(tv.tv_usec) << 16) ^ tv.tv_sec ^ getpid();
+
+ v = value;
+
+ for (i = 0; i < RAND_NAME_LENGTH; i++)
+ {
+ buffer[i] = LETTERS[v % COUNT_OF_LETTERS];
+ v /= COUNT_OF_LETTERS;
+ }
+
+ rtl_string2UString(
+ rand_name,
+ buffer,
+ RAND_NAME_LENGTH,
+ RTL_TEXTENCODING_ASCII_US,
+ OSTRING_TO_OUSTRING_CVTFLAGS);
+
+ assert(*rand_name);
+}
+
+/*****************************************************************
+ * Helper function
+ * Either use the directory provided or the result of
+ * osl_getTempDirUrl and return it as system path and file url
+ ****************************************************************/
+
+static oslFileError osl_setup_base_directory_impl_(
+ rtl_uString* pustrDirectoryURL,
+ rtl_uString** ppustr_base_dir)
+{
+ rtl_uString* dir_url = nullptr;
+ rtl_uString* dir = nullptr;
+ oslFileError error = osl_File_E_None;
+
+ if (pustrDirectoryURL)
+ rtl_uString_assign(&dir_url, pustrDirectoryURL);
+ else
+ error = osl_getTempDirURL(&dir_url);
+
+ if (error == osl_File_E_None)
+ {
+ error = osl_getSystemPathFromFileURL_Ex(dir_url, &dir);
+ rtl_uString_release(dir_url);
+ }
+
+ if (error == osl_File_E_None)
+ {
+ rtl_uString_assign(ppustr_base_dir, dir);
+ rtl_uString_release(dir);
+ }
+
+ return error;
+}
+
+/*****************************************************************
+ * osl_setup_createTempFile_impl
+ * validate input parameter, setup variables
+ ****************************************************************/
+
+ static oslFileError osl_setup_createTempFile_impl_(
+ rtl_uString* pustrDirectoryURL,
+ oslFileHandle* pHandle,
+ rtl_uString** ppustrTempFileURL,
+ rtl_uString** ppustr_base_dir,
+ bool* b_delete_on_close)
+ {
+ oslFileError osl_error;
+
+ OSL_PRECOND(((nullptr != pHandle) || (nullptr != ppustrTempFileURL)), "Invalid parameter!");
+
+ if ((pHandle == nullptr) && (ppustrTempFileURL == nullptr))
+ {
+ osl_error = osl_File_E_INVAL;
+ }
+ else
+ {
+ osl_error = osl_setup_base_directory_impl_(
+ pustrDirectoryURL, ppustr_base_dir);
+
+ *b_delete_on_close = (ppustrTempFileURL == nullptr);
+ }
+
+ return osl_error;
+ }
+
+/*****************************************************************
+ * Create a unique file in the specified directory and return
+ * its name
+ ****************************************************************/
+
+static oslFileError osl_create_temp_file_impl_(
+ const rtl_uString* pustr_base_directory,
+ oslFileHandle* file_handle,
+ rtl_uString** ppustr_temp_file_name)
+{
+ rtl_uString* rand_name = nullptr;
+ sal_uInt32 len_base_dir = 0;
+ rtl_uString* tmp_file_path = nullptr;
+ rtl_uString* tmp_file_url = nullptr;
+ sal_Int32 capacity = 0;
+ oslFileError osl_error = osl_File_E_None;
+ sal_Int32 offset_file_name;
+ const sal_Unicode* puchr;
+
+ OSL_PRECOND(pustr_base_directory, "Invalid Parameter");
+ OSL_PRECOND(file_handle, "Invalid Parameter");
+ OSL_PRECOND(ppustr_temp_file_name, "Invalid Parameter");
+
+ len_base_dir = rtl_uString_getLength(pustr_base_directory);
+
+ rtl_uString_new_WithLength(
+ &tmp_file_path,
+ (len_base_dir + 1 + RAND_NAME_LENGTH));
+ capacity = len_base_dir + 1 + RAND_NAME_LENGTH;
+
+ rtl_uStringbuffer_insert(
+ &tmp_file_path,
+ &capacity,
+ 0,
+ rtl_uString_getStr(const_cast<rtl_uString*>(pustr_base_directory)),
+ len_base_dir);
+
+ offset_file_name = len_base_dir;
+
+ puchr = rtl_uString_getStr(tmp_file_path);
+
+ /* ensure that the last character is a '/' */
+
+ if (puchr[len_base_dir - 1] != '/')
+ {
+ rtl_uStringbuffer_insert_ascii(
+ &tmp_file_path,
+ &capacity,
+ len_base_dir,
+ "/",
+ 1);
+
+ offset_file_name++;
+ }
+
+ while(true) /* try until success */
+ {
+ osl_gen_random_name_impl_(&rand_name);
+
+ rtl_uStringbuffer_insert(
+ &tmp_file_path,
+ &capacity,
+ offset_file_name,
+ rtl_uString_getStr(rand_name),
+ rtl_uString_getLength(rand_name));
+
+ osl_error = osl_getFileURLFromSystemPath(
+ tmp_file_path, &tmp_file_url);
+
+ if (osl_error == osl_File_E_None)
+ {
+ osl_error = openFile(
+ tmp_file_url,
+ file_handle,
+ osl_File_OpenFlag_Read |
+ osl_File_OpenFlag_Write |
+ osl_File_OpenFlag_Create,
+ S_IRUSR | S_IWUSR);
+ }
+
+ /* in case of error osl_File_E_EXIST we simply try again else we give up */
+
+ if (osl_error != osl_File_E_EXIST)
+ {
+ rtl_uString_release(rand_name);
+
+ if (tmp_file_url)
+ rtl_uString_release(tmp_file_url);
+
+ break;
+ }
+ } /* while(1) */
+
+ if (osl_error == osl_File_E_None)
+ rtl_uString_assign(ppustr_temp_file_name, tmp_file_path);
+
+ rtl_uString_release(tmp_file_path);
+
+ return osl_error;
+}
+
+oslFileError SAL_CALL osl_createTempFile(
+ rtl_uString* pustrDirectoryURL,
+ oslFileHandle* pHandle,
+ rtl_uString** ppustrTempFileURL)
+{
+ rtl_uString* base_directory = nullptr;
+ oslFileHandle temp_file_handle;
+ bool b_delete_on_close;
+ oslFileError osl_error;
+
+ osl_error = osl_setup_createTempFile_impl_(
+ pustrDirectoryURL,
+ pHandle,
+ ppustrTempFileURL,
+ &base_directory,
+ &b_delete_on_close);
+
+ if (osl_error != osl_File_E_None)
+ return osl_error;
+
+ rtl_uString* temp_file_name = nullptr;
+ osl_error = osl_create_temp_file_impl_(
+ base_directory, &temp_file_handle, &temp_file_name);
+
+ rtl_uString* temp_file_url = nullptr;
+ if (osl_error == osl_File_E_None)
+ {
+ osl_error = osl_getFileURLFromSystemPath(temp_file_name, &temp_file_url);
+ rtl_uString_release(temp_file_name);
+ }
+
+ if (osl_error == osl_File_E_None)
+ {
+ if (b_delete_on_close)
+ {
+ osl_error = osl_removeFile(temp_file_url);
+
+ if (osl_error == osl_File_E_None)
+ {
+ *pHandle = temp_file_handle;
+ temp_file_handle = nullptr;
+ }
+ }
+ else
+ {
+ if (pHandle)
+ {
+ *pHandle = temp_file_handle;
+ temp_file_handle = nullptr;
+ }
+
+ rtl_uString_assign(ppustrTempFileURL, temp_file_url);
+ }
+
+ rtl_uString_release(temp_file_url);
+ }
+
+ if (temp_file_handle)
+ osl_closeFile(temp_file_handle);
+
+ rtl_uString_release(base_directory);
+
+ return osl_error;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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