1 files changed, 337 insertions, 0 deletions
diff --git a/sal/osl/unx/tempfile.cxx b/sal/osl/unx/tempfile.cxx
new file mode 100644
index 000000000..84f44cbd4
--- /dev/null
+++ b/sal/osl/unx/tempfile.cxx
@@ -0,0 +1,337 @@
+/* -*- 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: */