diff options
Diffstat (limited to 'src/3rd_party/dbus-1.7.8/dbus/dbus-file-win.c')
| -rw-r--r-- | src/3rd_party/dbus-1.7.8/dbus/dbus-file-win.c | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/src/3rd_party/dbus-1.7.8/dbus/dbus-file-win.c b/src/3rd_party/dbus-1.7.8/dbus/dbus-file-win.c deleted file mode 100644 index 06a8ea1ced..0000000000 --- a/src/3rd_party/dbus-1.7.8/dbus/dbus-file-win.c +++ /dev/null @@ -1,407 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ -/* dbus-file-win.c windows related file implementation (internal to D-Bus implementation) - * - * Copyright (C) 2002, 2003, 2006 Red Hat, Inc. - * Copyright (C) 2003 CodeFactory AB - * - * Licensed under the Academic Free License version 2.1 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - */ - -#include <config.h> -#include "dbus-protocol.h" -#include "dbus-string.h" -#include "dbus-internals.h" -#include "dbus-sysdeps-win.h" -#include "dbus-pipe.h" - -#include <windows.h> - - -/** - * Thin wrapper around the read() system call that appends - * the data it reads to the DBusString buffer. It appends - * up to the given count. - * - * @param hnd the HANDLE to read from - * @param buffer the buffer to append data to - * @param count the amount of data to read - * @param error place to set an error - * @returns the number of bytes read or -1 - */ -static int -_dbus_file_read (HANDLE hnd, - DBusString *buffer, - int count, - DBusError *error) -{ - BOOL result; - DWORD bytes_read; - int start; - char *data; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - _dbus_assert (count >= 0); - - start = _dbus_string_get_length (buffer); - - if (!_dbus_string_lengthen (buffer, count)) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - return -1; - } - - data = _dbus_string_get_data_len (buffer, start, count); - - result = ReadFile (hnd, data, count, &bytes_read, NULL); - if (result == 0) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Failed to read from 0x%x: %s", hnd, emsg); - _dbus_win_free_error_string (emsg); - return -1; - } - - if (bytes_read) - { - /* put length back (doesn't actually realloc) */ - _dbus_string_set_length (buffer, start + bytes_read); - -#if 0 - if (bytes_read > 0) - _dbus_verbose_bytes_of_string (buffer, start, bytes_read); -#endif - } - - return bytes_read; -} - - -/** - * Appends the contents of the given file to the string, - * returning error code. At the moment, won't open a file - * more than a megabyte in size. - * - * @param str the string to append to - * @param filename filename to load - * @param error place to set an error - * @returns #FALSE if error was set - */ -dbus_bool_t -_dbus_file_get_contents (DBusString *str, - const DBusString *filename, - DBusError *error) -{ - HANDLE hnd; - DWORD fsize; - DWORD fsize_hi; - int orig_len; - unsigned int total; - const char *filename_c; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - filename_c = _dbus_string_get_const_data (filename); - - hnd = CreateFileA (filename_c, GENERIC_READ, - FILE_SHARE_READ | FILE_SHARE_WRITE, - NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); - if (hnd == INVALID_HANDLE_VALUE) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Failed to open \"%s\": %s", filename_c, emsg); - _dbus_win_free_error_string (emsg); - return FALSE; - } - - _dbus_verbose ("file %s hnd %p opened\n", filename_c, hnd); - - fsize = GetFileSize (hnd, &fsize_hi); - if (fsize == 0xFFFFFFFF && GetLastError() != NO_ERROR) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Failed to get file size for \"%s\": %s", - filename_c, emsg); - _dbus_win_free_error_string (emsg); - - _dbus_verbose ("GetFileSize() failed: %s", emsg); - - CloseHandle (hnd); - - return FALSE; - } - - if (fsize_hi != 0 || fsize > _DBUS_ONE_MEGABYTE) - { - dbus_set_error (error, DBUS_ERROR_FAILED, - "File size %lu/%lu of \"%s\" is too large.", - (unsigned long) fsize_hi, - (unsigned long) fsize, filename_c); - CloseHandle (hnd); - return FALSE; - } - - total = 0; - orig_len = _dbus_string_get_length (str); - if (fsize > 0) - { - int bytes_read; - - while (total < fsize) - { - bytes_read = _dbus_file_read (hnd, str, fsize - total, error); - if (bytes_read <= 0) - { - if (bytes_read == 0) - { - dbus_set_error (error, DBUS_ERROR_FAILED, - "Premature EOF reading \"%s\"", - filename_c); - } - else - _DBUS_ASSERT_ERROR_IS_SET (error); - - CloseHandle (hnd); - _dbus_string_set_length (str, orig_len); - return FALSE; - } - else - total += bytes_read; - } - - CloseHandle (hnd); - return TRUE; - } - else - { - CloseHandle (hnd); - return TRUE; - } -} - - -/** - * Writes a string out to a file. If the file exists, - * it will be atomically overwritten by the new data. - * - * @param str the string to write out - * @param filename the file to save string to - * @param world_readable if true, ensure file is world readable - * @param error error to be filled in on failure - * @returns #FALSE on failure - */ -dbus_bool_t -_dbus_string_save_to_file (const DBusString *str, - const DBusString *filename, - dbus_bool_t world_readable, - DBusError *error) -{ - HANDLE hnd; - int bytes_to_write; - const char *filename_c; - DBusString tmp_filename; - const char *tmp_filename_c; - int total; - const char *str_c; - dbus_bool_t need_unlink; - dbus_bool_t retval; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - hnd = INVALID_HANDLE_VALUE; - retval = FALSE; - need_unlink = FALSE; - - if (!_dbus_string_init (&tmp_filename)) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - return FALSE; - } - - if (!_dbus_string_copy (filename, 0, &tmp_filename, 0)) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - _dbus_string_free (&tmp_filename); - return FALSE; - } - - if (!_dbus_string_append (&tmp_filename, ".")) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - _dbus_string_free (&tmp_filename); - return FALSE; - } - -#define N_TMP_FILENAME_RANDOM_BYTES 8 - if (!_dbus_generate_random_ascii (&tmp_filename, N_TMP_FILENAME_RANDOM_BYTES)) - { - dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL); - _dbus_string_free (&tmp_filename); - return FALSE; - } - - filename_c = _dbus_string_get_const_data (filename); - tmp_filename_c = _dbus_string_get_const_data (&tmp_filename); - - /* TODO - support world-readable in an atomic fashion */ - hnd = CreateFileA (tmp_filename_c, GENERIC_WRITE, - FILE_SHARE_READ | FILE_SHARE_WRITE, - NULL, CREATE_NEW, FILE_ATTRIBUTE_NORMAL, - INVALID_HANDLE_VALUE); - if (hnd == INVALID_HANDLE_VALUE) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Could not create \"%s\": %s", filename_c, emsg); - _dbus_win_free_error_string (emsg); - goto out; - } - if (world_readable) - { - if (! _dbus_make_file_world_readable (&tmp_filename, error)) - goto out; - } - - _dbus_verbose ("tmp file %s hnd %p opened\n", tmp_filename_c, hnd); - - need_unlink = TRUE; - - total = 0; - bytes_to_write = _dbus_string_get_length (str); - str_c = _dbus_string_get_const_data (str); - - while (total < bytes_to_write) - { - DWORD bytes_written; - BOOL res; - - res = WriteFile (hnd, str_c + total, bytes_to_write - total, - &bytes_written, NULL); - - if (res == 0 || bytes_written <= 0) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Could not write to %s: %s", tmp_filename_c, emsg); - _dbus_win_free_error_string (emsg); - goto out; - } - - total += bytes_written; - } - - if (CloseHandle (hnd) == 0) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Could not close file %s: %s", tmp_filename_c, emsg); - _dbus_win_free_error_string (emsg); - goto out; - } - - hnd = INVALID_HANDLE_VALUE; - - /* Unlike rename(), MoveFileEx() can replace existing files */ - if (!MoveFileExA (tmp_filename_c, filename_c, MOVEFILE_REPLACE_EXISTING)) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Could not rename %s to %s: %s", - tmp_filename_c, filename_c, emsg); - _dbus_win_free_error_string (emsg); - - goto out; - } - - need_unlink = FALSE; - - retval = TRUE; - - out: - /* close first, then unlink */ - - if (hnd != INVALID_HANDLE_VALUE) - CloseHandle (hnd); - - if (need_unlink && DeleteFileA (tmp_filename_c) == 0) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - _dbus_verbose ("Failed to unlink temp file %s: %s", tmp_filename_c, - emsg); - _dbus_win_free_error_string (emsg); - } - - _dbus_string_free (&tmp_filename); - - if (!retval) - _DBUS_ASSERT_ERROR_IS_SET (error); - - return retval; -} - - -/** Creates the given file, failing if the file already exists. - * - * @param filename the filename - * @param error error location - * @returns #TRUE if we created the file and it didn't exist - */ -dbus_bool_t -_dbus_create_file_exclusively (const DBusString *filename, - DBusError *error) -{ - HANDLE hnd; - const char *filename_c; - - _DBUS_ASSERT_ERROR_IS_CLEAR (error); - - filename_c = _dbus_string_get_const_data (filename); - - hnd = CreateFileA (filename_c, GENERIC_WRITE, - FILE_SHARE_READ | FILE_SHARE_WRITE, - NULL, CREATE_NEW, FILE_ATTRIBUTE_NORMAL, - INVALID_HANDLE_VALUE); - if (hnd == INVALID_HANDLE_VALUE) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Could not create file %s: %s", - filename_c, emsg); - _dbus_win_free_error_string (emsg); - return FALSE; - } - - _dbus_verbose ("exclusive file %s hnd %p opened\n", filename_c, hnd); - - if (CloseHandle (hnd) == 0) - { - char *emsg = _dbus_win_error_string (GetLastError ()); - dbus_set_error (error, _dbus_win_error_from_last_error (), - "Could not close file %s: %s", - filename_c, emsg); - _dbus_win_free_error_string (emsg); - - return FALSE; - } - - return TRUE; -} - |