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glib/gio/glocalfileinfo.c
Philip Withnall a17a27bcf1 glocalfileinfo: Remove a redundant store 
This fixes a scan-build warning:
```
../../../../source/glib/gio/glocalfileinfo.c:1661:28: warning: Although the value stored to 'mydirname' is used in the enclosing expression, the value is never actually read from 'mydirname' [deadcode.DeadStores]
                           mydirname = g_strdup (dirname),
                           ^           ~~~~~~~~~~~~~~~~~~
```

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

Helps: #1767
2022-04-28 11:22:53 +01:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include "config.h"
#include <glib.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#ifdef G_OS_UNIX
#include <grp.h>
#include <pwd.h>
#endif
#ifdef HAVE_SELINUX
#include <selinux/selinux.h>
#endif
#ifdef HAVE_XATTR
#if defined HAVE_SYS_XATTR_H
#include <sys/xattr.h>
#elif defined HAVE_ATTR_XATTR_H
#include <attr/xattr.h>
#else
#error "Neither <sys/xattr.h> nor <attr/xattr.h> is present but extended attribute support is enabled."
#endif /* defined HAVE_SYS_XATTR_H || HAVE_ATTR_XATTR_H */
#endif /* HAVE_XATTR */
#include <glib/gstdio.h>
#include <glib/gstdioprivate.h>
#include <gfileattribute-priv.h>
#include <gfileinfo-priv.h>
#include <gvfs.h>
#ifdef G_OS_UNIX
#include <unistd.h>
#include "glib-unix.h"
#endif
#include "glib-private.h"
#include "thumbnail-verify.h"
#ifdef G_OS_WIN32
#include <windows.h>
#include <io.h>
#ifndef W_OK
#define W_OK 2
#endif
#ifndef R_OK
#define R_OK 4
#endif
#ifndef X_OK
#define X_OK 0 /* not really */
#endif
#ifndef S_ISREG
#define S_ISREG(m) (((m) & _S_IFMT) == _S_IFREG)
#endif
#ifndef S_ISDIR
#define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
#endif
#ifndef S_IXUSR
#define S_IXUSR _S_IEXEC
#endif
#endif
#include "glocalfileinfo.h"
#include "gioerror.h"
#include "gthemedicon.h"
#include "gcontenttypeprivate.h"
#include "glibintl.h"
struct ThumbMD5Context {
guint32 buf[4];
guint32 bits[2];
unsigned char in[64];
};
#ifndef G_OS_WIN32
typedef struct {
char *user_name;
char *real_name;
} UidData;
G_LOCK_DEFINE_STATIC (uid_cache);
static GHashTable *uid_cache = NULL;
G_LOCK_DEFINE_STATIC (gid_cache);
static GHashTable *gid_cache = NULL;
#endif /* !G_OS_WIN32 */
char *
_g_local_file_info_create_etag (GLocalFileStat *statbuf)
{
glong sec, usec;
g_return_val_if_fail (_g_stat_has_field (statbuf, G_LOCAL_FILE_STAT_FIELD_MTIME), NULL);
#if defined (G_OS_WIN32)
sec = statbuf->st_mtim.tv_sec;
usec = statbuf->st_mtim.tv_nsec / 1000;
#else
sec = _g_stat_mtime (statbuf);
#if defined (HAVE_STRUCT_STAT_ST_MTIMENSEC)
usec = statbuf->st_mtimensec / 1000;
#elif defined (HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
usec = _g_stat_mtim_nsec (statbuf) / 1000;
#else
usec = 0;
#endif
#endif
return g_strdup_printf ("%lu:%lu", sec, usec);
}
static char *
_g_local_file_info_create_file_id (GLocalFileStat *statbuf)
{
guint64 ino;
#ifdef G_OS_WIN32
ino = statbuf->file_index;
#else
ino = _g_stat_ino (statbuf);
#endif
return g_strdup_printf ("l%" G_GUINT64_FORMAT ":%" G_GUINT64_FORMAT,
(guint64) _g_stat_dev (statbuf),
ino);
}
static char *
_g_local_file_info_create_fs_id (GLocalFileStat *statbuf)
{
return g_strdup_printf ("l%" G_GUINT64_FORMAT,
(guint64) _g_stat_dev (statbuf));
}
#if defined (S_ISLNK) || defined (G_OS_WIN32)
static gchar *
read_link (const gchar *full_name)
{
#if defined (HAVE_READLINK)
gchar *buffer;
gsize size;
size = 256;
buffer = g_malloc (size);
while (1)
{
gssize read_size;
read_size = readlink (full_name, buffer, size);
if (read_size < 0)
{
g_free (buffer);
return NULL;
}
if ((gsize) read_size < size)
{
buffer[read_size] = 0;
return buffer;
}
size *= 2;
buffer = g_realloc (buffer, size);
}
#elif defined (G_OS_WIN32)
gchar *buffer;
int read_size;
read_size = GLIB_PRIVATE_CALL (g_win32_readlink_utf8) (full_name, NULL, 0, &buffer, TRUE);
if (read_size < 0)
return NULL;
else if (read_size == 0)
return strdup ("");
else
return buffer;
#else
return NULL;
#endif
}
#endif /* S_ISLNK || G_OS_WIN32 */
#ifdef HAVE_SELINUX
/* Get the SELinux security context */
static void
get_selinux_context (const char *path,
GFileInfo *info,
GFileAttributeMatcher *attribute_matcher,
gboolean follow_symlinks)
{
char *context;
if (!_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_SELINUX_CONTEXT))
return;
if (is_selinux_enabled ())
{
if (follow_symlinks)
{
if (lgetfilecon_raw (path, &context) < 0)
return;
}
else
{
if (getfilecon_raw (path, &context) < 0)
return;
}
if (context)
{
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_SELINUX_CONTEXT, context);
freecon (context);
}
}
}
#endif
#ifdef HAVE_XATTR
/* Wrappers to hide away differences between (Linux) getxattr/lgetxattr and
* (Mac) getxattr(..., XATTR_NOFOLLOW)
*/
#ifdef HAVE_XATTR_NOFOLLOW
#define g_fgetxattr(fd,name,value,size) fgetxattr(fd,name,value,size,0,0)
#define g_flistxattr(fd,name,size) flistxattr(fd,name,size,0)
#define g_setxattr(path,name,value,size) setxattr(path,name,value,size,0,0)
#else
#define g_fgetxattr fgetxattr
#define g_flistxattr flistxattr
#define g_setxattr(path,name,value,size) setxattr(path,name,value,size,0)
#endif
static gssize
g_getxattr (const char *path, const char *name, void *value, size_t size,
gboolean follow_symlinks)
{
#ifdef HAVE_XATTR_NOFOLLOW
return getxattr (path, name, value, size, 0, follow_symlinks ? 0 : XATTR_NOFOLLOW);
#else
if (follow_symlinks)
return getxattr (path, name, value, size);
else
return lgetxattr (path, name, value, size);
#endif
}
static gssize
g_listxattr(const char *path, char *namebuf, size_t size,
gboolean follow_symlinks)
{
#ifdef HAVE_XATTR_NOFOLLOW
return listxattr (path, namebuf, size, follow_symlinks ? 0 : XATTR_NOFOLLOW);
#else
if (follow_symlinks)
return listxattr (path, namebuf, size);
else
return llistxattr (path, namebuf, size);
#endif
}
static gboolean
valid_char (char c)
{
return c >= 32 && c <= 126 && c != '\\';
}
static gboolean
name_is_valid (const char *str)
{
while (*str)
{
if (!valid_char (*str++))
return FALSE;
}
return TRUE;
}
static char *
hex_escape_buffer (const char *str,
size_t len,
gboolean *free_return)
{
size_t num_invalid, i;
char *escaped_str, *p;
unsigned char c;
static char *hex_digits = "0123456789abcdef";
num_invalid = 0;
for (i = 0; i < len; i++)
{
if (!valid_char (str[i]))
num_invalid++;
}
if (num_invalid == 0)
{
*free_return = FALSE;
return (char *)str;
}
escaped_str = g_malloc (len + num_invalid*3 + 1);
p = escaped_str;
for (i = 0; i < len; i++)
{
if (valid_char (str[i]))
*p++ = str[i];
else
{
c = str[i];
*p++ = '\\';
*p++ = 'x';
*p++ = hex_digits[(c >> 4) & 0xf];
*p++ = hex_digits[c & 0xf];
}
}
*p = 0;
*free_return = TRUE;
return escaped_str;
}
static char *
hex_escape_string (const char *str,
gboolean *free_return)
{
return hex_escape_buffer (str, strlen (str), free_return);
}
static char *
hex_unescape_string (const char *str,
int *out_len,
gboolean *free_return)
{
int i;
char *unescaped_str, *p;
unsigned char c;
int len;
len = strlen (str);
if (strchr (str, '\\') == NULL)
{
if (out_len)
*out_len = len;
*free_return = FALSE;
return (char *)str;
}
unescaped_str = g_malloc (len + 1);
p = unescaped_str;
for (i = 0; i < len; i++)
{
if (str[i] == '\\' &&
str[i+1] == 'x' &&
len - i >= 4)
{
c =
(g_ascii_xdigit_value (str[i+2]) << 4) |
g_ascii_xdigit_value (str[i+3]);
*p++ = c;
i += 3;
}
else
*p++ = str[i];
}
if (out_len)
*out_len = p - unescaped_str;
*p++ = 0;
*free_return = TRUE;
return unescaped_str;
}
static void
escape_xattr (GFileInfo *info,
const char *gio_attr, /* gio attribute name */
const char *value, /* Is zero terminated */
size_t len /* not including zero termination */)
{
char *escaped_val;
gboolean free_escaped_val;
escaped_val = hex_escape_buffer (value, len, &free_escaped_val);
g_file_info_set_attribute_string (info, gio_attr, escaped_val);
if (free_escaped_val)
g_free (escaped_val);
}
static void
get_one_xattr (const char *path,
GFileInfo *info,
const char *gio_attr,
const char *xattr,
gboolean follow_symlinks)
{
char value[64];
char *value_p;
gssize len;
int errsv;
len = g_getxattr (path, xattr, value, sizeof (value)-1, follow_symlinks);
errsv = errno;
value_p = NULL;
if (len >= 0)
value_p = value;
else if (len == -1 && errsv == ERANGE)
{
len = g_getxattr (path, xattr, NULL, 0, follow_symlinks);
if (len < 0)
return;
value_p = g_malloc (len+1);
len = g_getxattr (path, xattr, value_p, len, follow_symlinks);
if (len < 0)
{
g_free (value_p);
return;
}
}
else
return;
/* Null terminate */
value_p[len] = 0;
escape_xattr (info, gio_attr, value_p, len);
if (value_p != value)
g_free (value_p);
}
#endif /* defined HAVE_XATTR */
static void
get_xattrs (const char *path,
gboolean user,
GFileInfo *info,
GFileAttributeMatcher *matcher,
gboolean follow_symlinks)
{
#ifdef HAVE_XATTR
gboolean all;
gsize list_size;
gssize list_res_size;
size_t len;
char *list;
const char *attr, *attr2;
if (user)
all = g_file_attribute_matcher_enumerate_namespace (matcher, "xattr");
else
all = g_file_attribute_matcher_enumerate_namespace (matcher, "xattr-sys");
if (all)
{
int errsv;
list_res_size = g_listxattr (path, NULL, 0, follow_symlinks);
if (list_res_size == -1 ||
list_res_size == 0)
return;
list_size = list_res_size;
list = g_malloc (list_size);
retry:
list_res_size = g_listxattr (path, list, list_size, follow_symlinks);
errsv = errno;
if (list_res_size == -1 && errsv == ERANGE)
{
list_size = list_size * 2;
list = g_realloc (list, list_size);
goto retry;
}
if (list_res_size == -1)
{
g_free (list);
return;
}
attr = list;
while (list_res_size > 0)
{
if ((user && g_str_has_prefix (attr, "user.")) ||
(!user && !g_str_has_prefix (attr, "user.")))
{
char *escaped_attr, *gio_attr;
gboolean free_escaped_attr;
if (user)
{
escaped_attr = hex_escape_string (attr + 5, &free_escaped_attr);
gio_attr = g_strconcat ("xattr::", escaped_attr, NULL);
}
else
{
escaped_attr = hex_escape_string (attr, &free_escaped_attr);
gio_attr = g_strconcat ("xattr-sys::", escaped_attr, NULL);
}
if (free_escaped_attr)
g_free (escaped_attr);
get_one_xattr (path, info, gio_attr, attr, follow_symlinks);
g_free (gio_attr);
}
len = strlen (attr) + 1;
attr += len;
list_res_size -= len;
}
g_free (list);
}
else
{
while ((attr = g_file_attribute_matcher_enumerate_next (matcher)) != NULL)
{
char *unescaped_attribute, *a;
gboolean free_unescaped_attribute;
attr2 = strchr (attr, ':');
if (attr2)
{
attr2 += 2; /* Skip '::' */
unescaped_attribute = hex_unescape_string (attr2, NULL, &free_unescaped_attribute);
if (user)
a = g_strconcat ("user.", unescaped_attribute, NULL);
else
a = unescaped_attribute;
get_one_xattr (path, info, attr, a, follow_symlinks);
if (user)
g_free (a);
if (free_unescaped_attribute)
g_free (unescaped_attribute);
}
}
}
#endif /* defined HAVE_XATTR */
}
#ifdef HAVE_XATTR
static void
get_one_xattr_from_fd (int fd,
GFileInfo *info,
const char *gio_attr,
const char *xattr)
{
char value[64];
char *value_p;
gssize len;
int errsv;
len = g_fgetxattr (fd, xattr, value, sizeof (value) - 1);
errsv = errno;
value_p = NULL;
if (len >= 0)
value_p = value;
else if (len == -1 && errsv == ERANGE)
{
len = g_fgetxattr (fd, xattr, NULL, 0);
if (len < 0)
return;
value_p = g_malloc (len + 1);
len = g_fgetxattr (fd, xattr, value_p, len);
if (len < 0)
{
g_free (value_p);
return;
}
}
else
return;
/* Null terminate */
value_p[len] = 0;
escape_xattr (info, gio_attr, value_p, len);
if (value_p != value)
g_free (value_p);
}
#endif /* defined HAVE_XATTR */
static void
get_xattrs_from_fd (int fd,
gboolean user,
GFileInfo *info,
GFileAttributeMatcher *matcher)
{
#ifdef HAVE_XATTR
gboolean all;
gsize list_size;
gssize list_res_size;
size_t len;
char *list;
const char *attr, *attr2;
if (user)
all = g_file_attribute_matcher_enumerate_namespace (matcher, "xattr");
else
all = g_file_attribute_matcher_enumerate_namespace (matcher, "xattr-sys");
if (all)
{
int errsv;
list_res_size = g_flistxattr (fd, NULL, 0);
if (list_res_size == -1 ||
list_res_size == 0)
return;
list_size = list_res_size;
list = g_malloc (list_size);
retry:
list_res_size = g_flistxattr (fd, list, list_size);
errsv = errno;
if (list_res_size == -1 && errsv == ERANGE)
{
list_size = list_size * 2;
list = g_realloc (list, list_size);
goto retry;
}
if (list_res_size == -1)
{
g_free (list);
return;
}
attr = list;
while (list_res_size > 0)
{
if ((user && g_str_has_prefix (attr, "user.")) ||
(!user && !g_str_has_prefix (attr, "user.")))
{
char *escaped_attr, *gio_attr;
gboolean free_escaped_attr;
if (user)
{
escaped_attr = hex_escape_string (attr + 5, &free_escaped_attr);
gio_attr = g_strconcat ("xattr::", escaped_attr, NULL);
}
else
{
escaped_attr = hex_escape_string (attr, &free_escaped_attr);
gio_attr = g_strconcat ("xattr-sys::", escaped_attr, NULL);
}
if (free_escaped_attr)
g_free (escaped_attr);
get_one_xattr_from_fd (fd, info, gio_attr, attr);
g_free (gio_attr);
}
len = strlen (attr) + 1;
attr += len;
list_res_size -= len;
}
g_free (list);
}
else
{
while ((attr = g_file_attribute_matcher_enumerate_next (matcher)) != NULL)
{
char *unescaped_attribute, *a;
gboolean free_unescaped_attribute;
attr2 = strchr (attr, ':');
if (attr2)
{
attr2++; /* Skip ':' */
unescaped_attribute = hex_unescape_string (attr2, NULL, &free_unescaped_attribute);
if (user)
a = g_strconcat ("user.", unescaped_attribute, NULL);
else
a = unescaped_attribute;
get_one_xattr_from_fd (fd, info, attr, a);
if (user)
g_free (a);
if (free_unescaped_attribute)
g_free (unescaped_attribute);
}
}
}
#endif /* defined HAVE_XATTR */
}
#ifdef HAVE_XATTR
static gboolean
set_xattr (char *filename,
const char *escaped_attribute,
const GFileAttributeValue *attr_value,
GError **error)
{
char *attribute, *value;
gboolean free_attribute, free_value;
int val_len, res, errsv;
gboolean is_user;
char *a;
if (attr_value == NULL)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("Attribute value must be non-NULL"));
return FALSE;
}
if (attr_value->type != G_FILE_ATTRIBUTE_TYPE_STRING)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("Invalid attribute type (string expected)"));
return FALSE;
}
if (!name_is_valid (escaped_attribute))
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("Invalid extended attribute name"));
return FALSE;
}
if (g_str_has_prefix (escaped_attribute, "xattr::"))
{
escaped_attribute += strlen ("xattr::");
is_user = TRUE;
}
else
{
g_warn_if_fail (g_str_has_prefix (escaped_attribute, "xattr-sys::"));
escaped_attribute += strlen ("xattr-sys::");
is_user = FALSE;
}
attribute = hex_unescape_string (escaped_attribute, NULL, &free_attribute);
value = hex_unescape_string (attr_value->u.string, &val_len, &free_value);
if (is_user)
a = g_strconcat ("user.", attribute, NULL);
else
a = attribute;
res = g_setxattr (filename, a, value, val_len);
errsv = errno;
if (is_user)
g_free (a);
if (free_attribute)
g_free (attribute);
if (free_value)
g_free (value);
if (res == -1)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error setting extended attribute “%s”: %s"),
escaped_attribute, g_strerror (errsv));
return FALSE;
}
return TRUE;
}
#endif
void
_g_local_file_info_get_parent_info (const char *dir,
GFileAttributeMatcher *attribute_matcher,
GLocalParentFileInfo *parent_info)
{
GStatBuf statbuf;
int res;
parent_info->extra_data = NULL;
parent_info->free_extra_data = NULL;
parent_info->writable = FALSE;
parent_info->is_sticky = FALSE;
parent_info->has_trash_dir = FALSE;
parent_info->device = 0;
parent_info->inode = 0;
if (_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_RENAME) ||
_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_DELETE) ||
_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_TRASH) ||
_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_UNIX_IS_MOUNTPOINT))
{
/* FIXME: Windows: The underlying _waccess() call in the C
* library is mostly pointless as it only looks at the READONLY
* FAT-style attribute of the file, it doesn't check the ACL at
* all.
*/
parent_info->writable = (g_access (dir, W_OK) == 0);
res = g_stat (dir, &statbuf);
/*
* The sticky bit (S_ISVTX) on a directory means that a file in that directory can be
* renamed or deleted only by the owner of the file, by the owner of the directory, and
* by a privileged process.
*/
if (res == 0)
{
#ifdef S_ISVTX
parent_info->is_sticky = (statbuf.st_mode & S_ISVTX) != 0;
#else
parent_info->is_sticky = FALSE;
#endif
parent_info->owner = statbuf.st_uid;
parent_info->device = statbuf.st_dev;
parent_info->inode = statbuf.st_ino;
/* No need to find trash dir if it's not writable anyway */
if (parent_info->writable &&
_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_TRASH))
parent_info->has_trash_dir = _g_local_file_has_trash_dir (dir, statbuf.st_dev);
}
}
}
void
_g_local_file_info_free_parent_info (GLocalParentFileInfo *parent_info)
{
if (parent_info->extra_data &&
parent_info->free_extra_data)
parent_info->free_extra_data (parent_info->extra_data);
}
static void
get_access_rights (GFileAttributeMatcher *attribute_matcher,
GFileInfo *info,
const gchar *path,
GLocalFileStat *statbuf,
GLocalParentFileInfo *parent_info)
{
/* FIXME: Windows: The underlyin _waccess() is mostly pointless */
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_ACCESS_CAN_READ))
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_READ,
g_access (path, R_OK) == 0);
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_ACCESS_CAN_WRITE))
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_WRITE,
g_access (path, W_OK) == 0);
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_ACCESS_CAN_EXECUTE))
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_EXECUTE,
g_access (path, X_OK) == 0);
if (parent_info)
{
gboolean writable;
writable = FALSE;
if (parent_info->writable)
{
#ifdef G_OS_WIN32
writable = TRUE;
#else
if (parent_info->is_sticky)
{
uid_t uid = geteuid ();
if (uid == _g_stat_uid (statbuf) ||
uid == (uid_t) parent_info->owner ||
uid == 0)
writable = TRUE;
}
else
writable = TRUE;
#endif
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_RENAME))
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_RENAME,
writable);
if (_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_DELETE))
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_DELETE,
writable);
if (_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_TRASH))
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_ACCESS_CAN_TRASH,
writable && parent_info->has_trash_dir);
}
}
static void
set_info_from_stat (GFileInfo *info,
GLocalFileStat *statbuf,
GFileAttributeMatcher *attribute_matcher)
{
GFileType file_type;
file_type = G_FILE_TYPE_UNKNOWN;
if (S_ISREG (_g_stat_mode (statbuf)))
file_type = G_FILE_TYPE_REGULAR;
else if (S_ISDIR (_g_stat_mode (statbuf)))
file_type = G_FILE_TYPE_DIRECTORY;
#ifndef G_OS_WIN32
else if (S_ISCHR (_g_stat_mode (statbuf)) ||
S_ISBLK (_g_stat_mode (statbuf)) ||
S_ISFIFO (_g_stat_mode (statbuf))
#ifdef S_ISSOCK
|| S_ISSOCK (_g_stat_mode (statbuf))
#endif
)
file_type = G_FILE_TYPE_SPECIAL;
#endif
#ifdef S_ISLNK
else if (S_ISLNK (_g_stat_mode (statbuf)))
file_type = G_FILE_TYPE_SYMBOLIC_LINK;
#elif defined (G_OS_WIN32)
else if (statbuf->reparse_tag == IO_REPARSE_TAG_SYMLINK ||
statbuf->reparse_tag == IO_REPARSE_TAG_MOUNT_POINT)
file_type = G_FILE_TYPE_SYMBOLIC_LINK;
#endif
g_file_info_set_file_type (info, file_type);
g_file_info_set_size (info, _g_stat_size (statbuf));
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_DEVICE, _g_stat_dev (statbuf));
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_NLINK, _g_stat_nlink (statbuf));
#ifndef G_OS_WIN32
/* Pointless setting these on Windows even if they exist in the struct */
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_INODE, _g_stat_ino (statbuf));
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_UID, _g_stat_uid (statbuf));
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_GID, _g_stat_gid (statbuf));
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_RDEV, _g_stat_rdev (statbuf));
#endif
/* Mostly pointless on Windows.
* Still, it allows for S_ISREG/S_ISDIR and IWRITE (read-only) checks.
*/
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_MODE, _g_stat_mode (statbuf));
#if defined (HAVE_STRUCT_STAT_ST_BLKSIZE)
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_BLOCK_SIZE, _g_stat_blksize (statbuf));
#endif
#if defined (HAVE_STRUCT_STAT_ST_BLOCKS)
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_BLOCKS, _g_stat_blocks (statbuf));
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_STANDARD_ALLOCATED_SIZE,
_g_stat_blocks (statbuf) * G_GUINT64_CONSTANT (512));
#elif defined (G_OS_WIN32)
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_STANDARD_ALLOCATED_SIZE,
statbuf->allocated_size);
#endif
#if defined (G_OS_WIN32)
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_MODIFIED, statbuf->st_mtim.tv_sec);
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_MODIFIED_USEC, statbuf->st_mtim.tv_nsec / 1000);
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_ACCESS, statbuf->st_atim.tv_sec);
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_ACCESS_USEC, statbuf->st_atim.tv_nsec / 1000);
#else
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_MODIFIED, _g_stat_mtime (statbuf));
#if defined (HAVE_STRUCT_STAT_ST_MTIMENSEC)
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_MODIFIED_USEC, statbuf->st_mtimensec / 1000);
#elif defined (HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_MODIFIED_USEC, _g_stat_mtim_nsec (statbuf) / 1000);
#endif
if (_g_stat_has_field (statbuf, G_LOCAL_FILE_STAT_FIELD_ATIME))
{
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_ACCESS, _g_stat_atime (statbuf));
#if defined (HAVE_STRUCT_STAT_ST_ATIMENSEC)
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_ACCESS_USEC, statbuf->st_atimensec / 1000);
#elif defined (HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC)
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_ACCESS_USEC, _g_stat_atim_nsec (statbuf) / 1000);
#endif
}
#endif
#ifndef G_OS_WIN32
/* Microsoft uses st_ctime for file creation time,
* instead of file change time:
* https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/stat-functions#generic-text-routine-mappings
* Thank you, Microsoft!
*/
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CHANGED, _g_stat_ctime (statbuf));
#if defined (HAVE_STRUCT_STAT_ST_CTIMENSEC)
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CHANGED_USEC, statbuf->st_ctimensec / 1000);
#elif defined (HAVE_STRUCT_STAT_ST_CTIM_TV_NSEC)
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CHANGED_USEC, _g_stat_ctim_nsec (statbuf) / 1000);
#endif
#endif
#if defined (HAVE_STATX)
if (_g_stat_has_field (statbuf, G_LOCAL_FILE_STAT_FIELD_BTIME))
{
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED, statbuf->stx_btime.tv_sec);
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED_USEC, statbuf->stx_btime.tv_nsec / 1000);
}
#elif defined (HAVE_STRUCT_STAT_ST_BIRTHTIME) && defined (HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC)
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED, statbuf->st_birthtime);
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED_USEC, statbuf->st_birthtimensec / 1000);
#elif defined (HAVE_STRUCT_STAT_ST_BIRTHTIM) && defined (HAVE_STRUCT_STAT_ST_BIRTHTIM_TV_NSEC)
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED, statbuf->st_birthtim.tv_sec);
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED_USEC, statbuf->st_birthtim.tv_nsec / 1000);
#elif defined (HAVE_STRUCT_STAT_ST_BIRTHTIME)
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED, statbuf->st_birthtime);
#elif defined (HAVE_STRUCT_STAT_ST_BIRTHTIM)
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED, statbuf->st_birthtim);
#elif defined (G_OS_WIN32)
_g_file_info_set_attribute_uint64_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED, statbuf->st_ctim.tv_sec);
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_TIME_CREATED_USEC, statbuf->st_ctim.tv_nsec / 1000);
#endif
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_ETAG_VALUE))
{
char *etag = _g_local_file_info_create_etag (statbuf);
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_ETAG_VALUE, etag);
g_free (etag);
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_ID_FILE))
{
char *id = _g_local_file_info_create_file_id (statbuf);
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_ID_FILE, id);
g_free (id);
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_ID_FILESYSTEM))
{
char *id = _g_local_file_info_create_fs_id (statbuf);
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_ID_FILESYSTEM, id);
g_free (id);
}
}
#ifndef G_OS_WIN32
static char *
make_valid_utf8 (const char *name)
{
GString *string;
const gchar *remainder, *invalid;
gsize remaining_bytes, valid_bytes;
string = NULL;
remainder = name;
remaining_bytes = strlen (name);
while (remaining_bytes != 0)
{
if (g_utf8_validate_len (remainder, remaining_bytes, &invalid))
break;
valid_bytes = invalid - remainder;
if (string == NULL)
string = g_string_sized_new (remaining_bytes);
g_string_append_len (string, remainder, valid_bytes);
/* append U+FFFD REPLACEMENT CHARACTER */
g_string_append (string, "\357\277\275");
remaining_bytes -= valid_bytes + 1;
remainder = invalid + 1;
}
if (string == NULL)
return g_strdup (name);
g_string_append (string, remainder);
g_warn_if_fail (g_utf8_validate (string->str, -1, NULL));
return g_string_free (string, FALSE);
}
static char *
convert_pwd_string_to_utf8 (char *pwd_str)
{
char *utf8_string;
if (!g_utf8_validate (pwd_str, -1, NULL))
{
utf8_string = g_locale_to_utf8 (pwd_str, -1, NULL, NULL, NULL);
if (utf8_string == NULL)
utf8_string = make_valid_utf8 (pwd_str);
}
else
utf8_string = g_strdup (pwd_str);
return utf8_string;
}
static void
uid_data_free (UidData *data)
{
g_free (data->user_name);
g_free (data->real_name);
g_free (data);
}
/* called with lock held */
static UidData *
lookup_uid_data (uid_t uid)
{
UidData *data;
char buffer[4096];
struct passwd pwbuf;
struct passwd *pwbufp;
#ifndef __BIONIC__
char *gecos, *comma;
#endif
if (uid_cache == NULL)
uid_cache = g_hash_table_new_full (NULL, NULL, NULL, (GDestroyNotify)uid_data_free);
data = g_hash_table_lookup (uid_cache, GINT_TO_POINTER (uid));
if (data)
return data;
data = g_new0 (UidData, 1);
#if defined(HAVE_GETPWUID_R)
getpwuid_r (uid, &pwbuf, buffer, sizeof(buffer), &pwbufp);
#else
pwbufp = getpwuid (uid);
#endif
if (pwbufp != NULL)
{
if (pwbufp->pw_name != NULL && pwbufp->pw_name[0] != 0)
data->user_name = convert_pwd_string_to_utf8 (pwbufp->pw_name);
#ifndef __BIONIC__
gecos = pwbufp->pw_gecos;
if (gecos)
{
comma = strchr (gecos, ',');
if (comma)
*comma = 0;
data->real_name = convert_pwd_string_to_utf8 (gecos);
}
#endif
}
/* Default fallbacks */
if (data->real_name == NULL)
{
if (data->user_name != NULL)
data->real_name = g_strdup (data->user_name);
else
data->real_name = g_strdup_printf ("user #%d", (int)uid);
}
if (data->user_name == NULL)
data->user_name = g_strdup_printf ("%d", (int)uid);
g_hash_table_replace (uid_cache, GINT_TO_POINTER (uid), data);
return data;
}
static char *
get_username_from_uid (uid_t uid)
{
char *res;
UidData *data;
G_LOCK (uid_cache);
data = lookup_uid_data (uid);
res = g_strdup (data->user_name);
G_UNLOCK (uid_cache);
return res;
}
static char *
get_realname_from_uid (uid_t uid)
{
char *res;
UidData *data;
G_LOCK (uid_cache);
data = lookup_uid_data (uid);
res = g_strdup (data->real_name);
G_UNLOCK (uid_cache);
return res;
}
/* called with lock held */
static char *
lookup_gid_name (gid_t gid)
{
char *name;
#if defined (HAVE_GETGRGID_R)
char buffer[4096];
struct group gbuf;
#endif
struct group *gbufp;
if (gid_cache == NULL)
gid_cache = g_hash_table_new_full (NULL, NULL, NULL, (GDestroyNotify)g_free);
name = g_hash_table_lookup (gid_cache, GINT_TO_POINTER (gid));
if (name)
return name;
#if defined (HAVE_GETGRGID_R)
getgrgid_r (gid, &gbuf, buffer, sizeof(buffer), &gbufp);
#else
gbufp = getgrgid (gid);
#endif
if (gbufp != NULL &&
gbufp->gr_name != NULL &&
gbufp->gr_name[0] != 0)
name = convert_pwd_string_to_utf8 (gbufp->gr_name);
else
name = g_strdup_printf("%d", (int)gid);
g_hash_table_replace (gid_cache, GINT_TO_POINTER (gid), name);
return name;
}
static char *
get_groupname_from_gid (gid_t gid)
{
char *res;
char *name;
G_LOCK (gid_cache);
name = lookup_gid_name (gid);
res = g_strdup (name);
G_UNLOCK (gid_cache);
return res;
}
#endif /* !G_OS_WIN32 */
static char *
get_content_type (const char *basename,
const char *path,
GLocalFileStat *statbuf,
gboolean is_symlink,
gboolean symlink_broken,
GFileQueryInfoFlags flags,
gboolean fast)
{
if (is_symlink &&
(symlink_broken || (flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS)))
return g_content_type_from_mime_type ("inode/symlink");
else if (statbuf != NULL && S_ISDIR(_g_stat_mode (statbuf)))
return g_content_type_from_mime_type ("inode/directory");
#ifndef G_OS_WIN32
else if (statbuf != NULL && S_ISCHR(_g_stat_mode (statbuf)))
return g_content_type_from_mime_type ("inode/chardevice");
else if (statbuf != NULL && S_ISBLK(_g_stat_mode (statbuf)))
return g_content_type_from_mime_type ("inode/blockdevice");
else if (statbuf != NULL && S_ISFIFO(_g_stat_mode (statbuf)))
return g_content_type_from_mime_type ("inode/fifo");
else if (statbuf != NULL && S_ISREG(_g_stat_mode (statbuf)) && _g_stat_size (statbuf) == 0)
{
/* Don't sniff zero-length files in order to avoid reading files
* that appear normal but are not (eg: files in /proc and /sys)
*
* Note that we need to return text/plain here so that
* newly-created text files are opened by the text editor.
* See https://bugzilla.gnome.org/show_bug.cgi?id=755795
*/
return g_content_type_from_mime_type ("text/plain");
}
#endif
#ifdef S_ISSOCK
else if (statbuf != NULL && S_ISSOCK(_g_stat_mode (statbuf)))
return g_content_type_from_mime_type ("inode/socket");
#endif
else
{
char *content_type;
gboolean result_uncertain;
content_type = g_content_type_guess (basename, NULL, 0, &result_uncertain);
#if !defined(G_OS_WIN32) && !defined(HAVE_COCOA)
if (!fast && result_uncertain && path != NULL)
{
guchar sniff_buffer[4096];
gsize sniff_length;
int fd, errsv;
sniff_length = _g_unix_content_type_get_sniff_len ();
if (sniff_length > 4096)
sniff_length = 4096;
#ifdef O_NOATIME
fd = g_open (path, O_RDONLY | O_NOATIME, 0);
errsv = errno;
if (fd < 0 && errsv == EPERM)
#endif
fd = g_open (path, O_RDONLY, 0);
if (fd != -1)
{
gssize res;
res = read (fd, sniff_buffer, sniff_length);
(void) g_close (fd, NULL);
if (res >= 0)
{
g_free (content_type);
content_type = g_content_type_guess (basename, sniff_buffer, res, NULL);
}
}
}
#endif
return content_type;
}
}
/* @stat_buf is the pre-calculated result of stat(path), or %NULL if that failed. */
static void
get_thumbnail_attributes (const char *path,
GFileInfo *info,
const GLocalFileStat *stat_buf)
{
GChecksum *checksum;
char *uri;
char *filename;
char *basename;
uri = g_filename_to_uri (path, NULL, NULL);
checksum = g_checksum_new (G_CHECKSUM_MD5);
g_checksum_update (checksum, (const guchar *) uri, strlen (uri));
basename = g_strconcat (g_checksum_get_string (checksum), ".png", NULL);
g_checksum_free (checksum);
filename = g_build_filename (g_get_user_cache_dir (),
"thumbnails", "large", basename,
NULL);
if (g_file_test (filename, G_FILE_TEST_IS_REGULAR))
{
_g_file_info_set_attribute_byte_string_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_PATH, filename);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_IS_VALID,
thumbnail_verify (filename, uri, stat_buf));
}
else
{
g_free (filename);
filename = g_build_filename (g_get_user_cache_dir (),
"thumbnails", "normal", basename,
NULL);
if (g_file_test (filename, G_FILE_TEST_IS_REGULAR))
{
_g_file_info_set_attribute_byte_string_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_PATH, filename);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_IS_VALID,
thumbnail_verify (filename, uri, stat_buf));
}
else
{
g_free (filename);
filename = g_build_filename (g_get_user_cache_dir (),
"thumbnails", "fail",
"gnome-thumbnail-factory",
basename,
NULL);
if (g_file_test (filename, G_FILE_TEST_IS_REGULAR))
{
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAILING_FAILED, TRUE);
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_THUMBNAIL_IS_VALID,
thumbnail_verify (filename, uri, stat_buf));
}
}
}
g_free (basename);
g_free (filename);
g_free (uri);
}
#ifdef G_OS_WIN32
static void
win32_get_file_user_info (const gchar *filename,
gchar **group_name,
gchar **user_name,
gchar **real_name)
{
PSECURITY_DESCRIPTOR psd = NULL;
DWORD sd_size = 0; /* first call calculates the size required */
wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
if ((GetFileSecurityW (wfilename,
GROUP_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION,
NULL,
sd_size,
&sd_size) || (ERROR_INSUFFICIENT_BUFFER == GetLastError())) &&
(psd = g_try_malloc (sd_size)) != NULL &&
GetFileSecurityW (wfilename,
GROUP_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION,
psd,
sd_size,
&sd_size))
{
PSID psid = 0;
BOOL defaulted;
SID_NAME_USE name_use = 0; /* don't care? */
wchar_t *name = NULL;
wchar_t *domain = NULL;
DWORD name_len = 0;
DWORD domain_len = 0;
/* get the user name */
do {
if (!user_name)
break;
if (!GetSecurityDescriptorOwner (psd, &psid, &defaulted))
break;
if (!LookupAccountSidW (NULL, /* local machine */
psid,
name, &name_len,
domain, &domain_len, /* no domain info yet */
&name_use) && (ERROR_INSUFFICIENT_BUFFER != GetLastError()))
break;
name = g_try_malloc (name_len * sizeof (wchar_t));
domain = g_try_malloc (domain_len * sizeof (wchar_t));
if (name && domain &&
LookupAccountSidW (NULL, /* local machine */
psid,
name, &name_len,
domain, &domain_len, /* no domain info yet */
&name_use))
{
*user_name = g_utf16_to_utf8 (name, -1, NULL, NULL, NULL);
}
g_free (name);
g_free (domain);
} while (FALSE);
/* get the group name */
do {
if (!group_name)
break;
if (!GetSecurityDescriptorGroup (psd, &psid, &defaulted))
break;
if (!LookupAccountSidW (NULL, /* local machine */
psid,
name, &name_len,
domain, &domain_len, /* no domain info yet */
&name_use) && (ERROR_INSUFFICIENT_BUFFER != GetLastError()))
break;
name = g_try_malloc (name_len * sizeof (wchar_t));
domain = g_try_malloc (domain_len * sizeof (wchar_t));
if (name && domain &&
LookupAccountSidW (NULL, /* local machine */
psid,
name, &name_len,
domain, &domain_len, /* no domain info yet */
&name_use))
{
*group_name = g_utf16_to_utf8 (name, -1, NULL, NULL, NULL);
}
g_free (name);
g_free (domain);
} while (FALSE);
/* TODO: get real name */
g_free (psd);
}
g_free (wfilename);
}
#endif /* G_OS_WIN32 */
#ifndef G_OS_WIN32
/* support for '.hidden' files */
G_LOCK_DEFINE_STATIC (hidden_cache);
static GHashTable *hidden_cache;
static GSource *hidden_cache_source = NULL; /* Under the hidden_cache lock */
static guint hidden_cache_ttl_secs = 5;
static guint hidden_cache_ttl_jitter_secs = 2;
typedef struct
{
GHashTable *hidden_files;
gint64 timestamp_secs;
} HiddenCacheData;
static gboolean
remove_from_hidden_cache (gpointer user_data)
{
HiddenCacheData *data;
GHashTableIter iter;
gboolean retval;
gint64 timestamp_secs;
G_LOCK (hidden_cache);
timestamp_secs = g_source_get_time (hidden_cache_source) / G_USEC_PER_SEC;
g_hash_table_iter_init (&iter, hidden_cache);
while (g_hash_table_iter_next (&iter, NULL, (gpointer *) &data))
{
if (timestamp_secs > data->timestamp_secs + hidden_cache_ttl_secs)
g_hash_table_iter_remove (&iter);
}
if (g_hash_table_size (hidden_cache) == 0)
{
g_clear_pointer (&hidden_cache_source, g_source_unref);
retval = G_SOURCE_REMOVE;
}
else
retval = G_SOURCE_CONTINUE;
G_UNLOCK (hidden_cache);
return retval;
}
static GHashTable *
read_hidden_file (const gchar *dirname)
{
gchar *contents = NULL;
gchar *filename;
filename = g_build_path ("/", dirname, ".hidden", NULL);
(void) g_file_get_contents (filename, &contents, NULL, NULL);
g_free (filename);
if (contents != NULL)
{
GHashTable *table;
gchar **lines;
gint i;
table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
lines = g_strsplit (contents, "\n", 0);
g_free (contents);
for (i = 0; lines[i]; i++)
/* hash table takes the individual strings... */
g_hash_table_add (table, lines[i]);
/* ... so we only free the container. */
g_free (lines);
return table;
}
else
return NULL;
}
static void
free_hidden_file_data (gpointer user_data)
{
HiddenCacheData *data = user_data;
g_clear_pointer (&data->hidden_files, g_hash_table_unref);
g_free (data);
}
static gboolean
file_is_hidden (const gchar *path,
const gchar *basename)
{
HiddenCacheData *data;
gboolean result;
gchar *dirname;
gpointer table;
dirname = g_path_get_dirname (path);
G_LOCK (hidden_cache);
if G_UNLIKELY (hidden_cache == NULL)
hidden_cache = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, free_hidden_file_data);
if (!g_hash_table_lookup_extended (hidden_cache, dirname,
NULL, (gpointer *) &data))
{
data = g_new0 (HiddenCacheData, 1);
data->hidden_files = table = read_hidden_file (dirname);
data->timestamp_secs = g_get_monotonic_time () / G_USEC_PER_SEC;
g_hash_table_insert (hidden_cache,
g_strdup (dirname),
data);
if (!hidden_cache_source)
{
hidden_cache_source =
g_timeout_source_new_seconds (hidden_cache_ttl_secs +
hidden_cache_ttl_jitter_secs);
g_source_set_priority (hidden_cache_source, G_PRIORITY_DEFAULT);
g_source_set_static_name (hidden_cache_source,
"[gio] remove_from_hidden_cache");
g_source_set_callback (hidden_cache_source,
remove_from_hidden_cache,
NULL, NULL);
g_source_attach (hidden_cache_source,
GLIB_PRIVATE_CALL (g_get_worker_context) ());
}
}
else
table = data->hidden_files;
result = table != NULL && g_hash_table_contains (table, basename);
G_UNLOCK (hidden_cache);
g_free (dirname);
return result;
}
#endif /* !G_OS_WIN32 */
void
_g_local_file_info_get_nostat (GFileInfo *info,
const char *basename,
const char *path,
GFileAttributeMatcher *attribute_matcher)
{
g_file_info_set_name (info, basename);
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_DISPLAY_NAME))
{
char *display_name = g_filename_display_basename (path);
/* look for U+FFFD REPLACEMENT CHARACTER */
if (strstr (display_name, "\357\277\275") != NULL)
{
char *p = display_name;
display_name = g_strconcat (display_name, _(" (invalid encoding)"), NULL);
g_free (p);
}
g_file_info_set_display_name (info, display_name);
g_free (display_name);
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_EDIT_NAME))
{
char *edit_name = g_filename_display_basename (path);
g_file_info_set_edit_name (info, edit_name);
g_free (edit_name);
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_COPY_NAME))
{
char *copy_name = g_filename_to_utf8 (basename, -1, NULL, NULL, NULL);
if (copy_name)
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_STANDARD_COPY_NAME, copy_name);
g_free (copy_name);
}
}
static const char *
get_icon_name (const char *path,
gboolean use_symbolic,
gboolean *with_fallbacks_out)
{
const char *name = NULL;
gboolean with_fallbacks = TRUE;
if (g_strcmp0 (path, g_get_home_dir ()) == 0)
{
name = use_symbolic ? "user-home-symbolic" : "user-home";
with_fallbacks = FALSE;
}
else if (g_strcmp0 (path, g_get_user_special_dir (G_USER_DIRECTORY_DESKTOP)) == 0)
{
name = use_symbolic ? "user-desktop-symbolic" : "user-desktop";
with_fallbacks = FALSE;
}
else if (g_strcmp0 (path, g_get_user_special_dir (G_USER_DIRECTORY_DOCUMENTS)) == 0)
{
name = use_symbolic ? "folder-documents-symbolic" : "folder-documents";
}
else if (g_strcmp0 (path, g_get_user_special_dir (G_USER_DIRECTORY_DOWNLOAD)) == 0)
{
name = use_symbolic ? "folder-download-symbolic" : "folder-download";
}
else if (g_strcmp0 (path, g_get_user_special_dir (G_USER_DIRECTORY_MUSIC)) == 0)
{
name = use_symbolic ? "folder-music-symbolic" : "folder-music";
}
else if (g_strcmp0 (path, g_get_user_special_dir (G_USER_DIRECTORY_PICTURES)) == 0)
{
name = use_symbolic ? "folder-pictures-symbolic" : "folder-pictures";
}
else if (g_strcmp0 (path, g_get_user_special_dir (G_USER_DIRECTORY_PUBLIC_SHARE)) == 0)
{
name = use_symbolic ? "folder-publicshare-symbolic" : "folder-publicshare";
}
else if (g_strcmp0 (path, g_get_user_special_dir (G_USER_DIRECTORY_TEMPLATES)) == 0)
{
name = use_symbolic ? "folder-templates-symbolic" : "folder-templates";
}
else if (g_strcmp0 (path, g_get_user_special_dir (G_USER_DIRECTORY_VIDEOS)) == 0)
{
name = use_symbolic ? "folder-videos-symbolic" : "folder-videos";
}
else
{
name = NULL;
}
if (with_fallbacks_out != NULL)
*with_fallbacks_out = with_fallbacks;
return name;
}
static GIcon *
get_icon (const char *path,
const char *content_type,
gboolean use_symbolic)
{
GIcon *icon = NULL;
const char *icon_name;
gboolean with_fallbacks;
icon_name = get_icon_name (path, use_symbolic, &with_fallbacks);
if (icon_name != NULL)
{
if (with_fallbacks)
icon = g_themed_icon_new_with_default_fallbacks (icon_name);
else
icon = g_themed_icon_new (icon_name);
}
else
{
if (use_symbolic)
icon = g_content_type_get_symbolic_icon (content_type);
else
icon = g_content_type_get_icon (content_type);
}
return icon;
}
GFileInfo *
_g_local_file_info_get (const char *basename,
const char *path,
GFileAttributeMatcher *attribute_matcher,
GFileQueryInfoFlags flags,
GLocalParentFileInfo *parent_info,
GError **error)
{
GFileInfo *info;
GLocalFileStat statbuf;
GLocalFileStat statbuf2;
int res;
gboolean stat_ok;
gboolean is_symlink, symlink_broken;
char *symlink_target;
GVfs *vfs;
GVfsClass *class;
guint64 device;
info = g_file_info_new ();
/* Make sure we don't set any unwanted attributes */
g_file_info_set_attribute_mask (info, attribute_matcher);
_g_local_file_info_get_nostat (info, basename, path, attribute_matcher);
if (attribute_matcher == NULL)
{
g_file_info_unset_attribute_mask (info);
return info;
}
res = g_local_file_lstat (path,
G_LOCAL_FILE_STAT_FIELD_BASIC_STATS | G_LOCAL_FILE_STAT_FIELD_BTIME,
G_LOCAL_FILE_STAT_FIELD_ALL & (~G_LOCAL_FILE_STAT_FIELD_BTIME) & (~G_LOCAL_FILE_STAT_FIELD_ATIME),
&statbuf);
if (res == -1)
{
int errsv = errno;
/* Don't bail out if we get Permission denied (SELinux?) */
if (errsv != EACCES)
{
char *display_name = g_filename_display_name (path);
g_object_unref (info);
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error when getting information for file “%s”: %s"),
display_name, g_strerror (errsv));
g_free (display_name);
return NULL;
}
}
/* Even if stat() fails, try to get as much as other attributes possible */
stat_ok = res != -1;
if (stat_ok)
device = _g_stat_dev (&statbuf);
else
device = 0;
#ifdef S_ISLNK
is_symlink = stat_ok && S_ISLNK (_g_stat_mode (&statbuf));
#elif defined (G_OS_WIN32)
/* glib already checked the FILE_ATTRIBUTE_REPARSE_POINT for us */
is_symlink = stat_ok &&
(statbuf.reparse_tag == IO_REPARSE_TAG_SYMLINK ||
statbuf.reparse_tag == IO_REPARSE_TAG_MOUNT_POINT);
#else
is_symlink = FALSE;
#endif
symlink_broken = FALSE;
if (is_symlink)
{
g_file_info_set_is_symlink (info, TRUE);
/* Unless NOFOLLOW was set we default to following symlinks */
if (!(flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS))
{
res = g_local_file_stat (path,
G_LOCAL_FILE_STAT_FIELD_BASIC_STATS | G_LOCAL_FILE_STAT_FIELD_BTIME,
G_LOCAL_FILE_STAT_FIELD_ALL & (~G_LOCAL_FILE_STAT_FIELD_BTIME) & (~G_LOCAL_FILE_STAT_FIELD_ATIME),
&statbuf2);
/* Report broken links as symlinks */
if (res != -1)
{
statbuf = statbuf2;
stat_ok = TRUE;
}
else
symlink_broken = TRUE;
}
}
if (stat_ok)
set_info_from_stat (info, &statbuf, attribute_matcher);
#ifdef G_OS_UNIX
if (stat_ok && _g_local_file_is_lost_found_dir (path, _g_stat_dev (&statbuf)))
g_file_info_set_is_hidden (info, TRUE);
#endif
#ifndef G_OS_WIN32
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_IS_HIDDEN))
{
if (basename != NULL &&
(basename[0] == '.' ||
file_is_hidden (path, basename)))
g_file_info_set_is_hidden (info, TRUE);
}
if (basename != NULL && basename[strlen (basename) -1] == '~' &&
(stat_ok && S_ISREG (_g_stat_mode (&statbuf))))
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_STANDARD_IS_BACKUP, TRUE);
#else
if (statbuf.attributes & FILE_ATTRIBUTE_HIDDEN)
g_file_info_set_is_hidden (info, TRUE);
if (statbuf.attributes & FILE_ATTRIBUTE_ARCHIVE)
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_DOS_IS_ARCHIVE, TRUE);
if (statbuf.attributes & FILE_ATTRIBUTE_SYSTEM)
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_DOS_IS_SYSTEM, TRUE);
if (statbuf.reparse_tag == IO_REPARSE_TAG_MOUNT_POINT)
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_DOS_IS_MOUNTPOINT, TRUE);
if (statbuf.reparse_tag != 0)
_g_file_info_set_attribute_uint32_by_id (info, G_FILE_ATTRIBUTE_ID_DOS_REPARSE_POINT_TAG, statbuf.reparse_tag);
#endif
symlink_target = NULL;
if (is_symlink)
{
#if defined (S_ISLNK) || defined (G_OS_WIN32)
symlink_target = read_link (path);
#endif
if (symlink_target &&
_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_SYMLINK_TARGET))
g_file_info_set_symlink_target (info, symlink_target);
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_CONTENT_TYPE) ||
_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_ICON) ||
_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_SYMBOLIC_ICON))
{
char *content_type = get_content_type (basename, path, stat_ok ? &statbuf : NULL, is_symlink, symlink_broken, flags, FALSE);
if (content_type)
{
g_file_info_set_content_type (info, content_type);
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_ICON)
|| _g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_SYMBOLIC_ICON))
{
GIcon *icon;
/* non symbolic icon */
icon = get_icon (path, content_type, FALSE);
if (icon != NULL)
{
g_file_info_set_icon (info, icon);
g_object_unref (icon);
}
/* symbolic icon */
icon = get_icon (path, content_type, TRUE);
if (icon != NULL)
{
g_file_info_set_symbolic_icon (info, icon);
g_object_unref (icon);
}
}
g_free (content_type);
}
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_STANDARD_FAST_CONTENT_TYPE))
{
char *content_type = get_content_type (basename, path, stat_ok ? &statbuf : NULL, is_symlink, symlink_broken, flags, TRUE);
if (content_type)
{
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_STANDARD_FAST_CONTENT_TYPE, content_type);
g_free (content_type);
}
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_OWNER_USER))
{
char *name = NULL;
#ifdef G_OS_WIN32
win32_get_file_user_info (path, NULL, &name, NULL);
#else
if (stat_ok)
name = get_username_from_uid (_g_stat_uid (&statbuf));
#endif
if (name)
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_OWNER_USER, name);
g_free (name);
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_OWNER_USER_REAL))
{
char *name = NULL;
#ifdef G_OS_WIN32
win32_get_file_user_info (path, NULL, NULL, &name);
#else
if (stat_ok)
name = get_realname_from_uid (_g_stat_uid (&statbuf));
#endif
if (name)
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_OWNER_USER_REAL, name);
g_free (name);
}
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_OWNER_GROUP))
{
char *name = NULL;
#ifdef G_OS_WIN32
win32_get_file_user_info (path, &name, NULL, NULL);
#else
if (stat_ok)
name = get_groupname_from_gid (_g_stat_gid (&statbuf));
#endif
if (name)
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_OWNER_GROUP, name);
g_free (name);
}
if (stat_ok && parent_info && parent_info->device != 0 &&
_g_file_attribute_matcher_matches_id (attribute_matcher, G_FILE_ATTRIBUTE_ID_UNIX_IS_MOUNTPOINT) &&
(_g_stat_dev (&statbuf) != parent_info->device || _g_stat_ino (&statbuf) == parent_info->inode))
_g_file_info_set_attribute_boolean_by_id (info, G_FILE_ATTRIBUTE_ID_UNIX_IS_MOUNTPOINT, TRUE);
if (stat_ok)
get_access_rights (attribute_matcher, info, path, &statbuf, parent_info);
#ifdef HAVE_SELINUX
get_selinux_context (path, info, attribute_matcher, (flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS) == 0);
#endif
get_xattrs (path, TRUE, info, attribute_matcher, (flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS) == 0);
get_xattrs (path, FALSE, info, attribute_matcher, (flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS) == 0);
if (_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_THUMBNAIL_PATH) ||
_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_THUMBNAIL_IS_VALID) ||
_g_file_attribute_matcher_matches_id (attribute_matcher,
G_FILE_ATTRIBUTE_ID_THUMBNAILING_FAILED))
{
if (stat_ok)
get_thumbnail_attributes (path, info, &statbuf);
else
get_thumbnail_attributes (path, info, NULL);
}
vfs = g_vfs_get_default ();
class = G_VFS_GET_CLASS (vfs);
if (class->local_file_add_info)
{
class->local_file_add_info (vfs,
path,
device,
attribute_matcher,
info,
NULL,
&parent_info->extra_data,
&parent_info->free_extra_data);
}
g_file_info_unset_attribute_mask (info);
g_free (symlink_target);
return info;
}
GFileInfo *
_g_local_file_info_get_from_fd (int fd,
const char *attributes,
GError **error)
{
GLocalFileStat stat_buf;
GFileAttributeMatcher *matcher;
GFileInfo *info;
if (g_local_file_fstat (fd,
G_LOCAL_FILE_STAT_FIELD_BASIC_STATS | G_LOCAL_FILE_STAT_FIELD_BTIME,
G_LOCAL_FILE_STAT_FIELD_ALL & (~G_LOCAL_FILE_STAT_FIELD_BTIME) & (~G_LOCAL_FILE_STAT_FIELD_ATIME),
&stat_buf) == -1)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error when getting information for file descriptor: %s"),
g_strerror (errsv));
return NULL;
}
info = g_file_info_new ();
matcher = g_file_attribute_matcher_new (attributes);
/* Make sure we don't set any unwanted attributes */
g_file_info_set_attribute_mask (info, matcher);
set_info_from_stat (info, &stat_buf, matcher);
#ifdef HAVE_SELINUX
if (_g_file_attribute_matcher_matches_id (matcher, G_FILE_ATTRIBUTE_ID_SELINUX_CONTEXT) &&
is_selinux_enabled ())
{
char *context;
if (fgetfilecon_raw (fd, &context) >= 0)
{
_g_file_info_set_attribute_string_by_id (info, G_FILE_ATTRIBUTE_ID_SELINUX_CONTEXT, context);
freecon (context);
}
}
#endif
get_xattrs_from_fd (fd, TRUE, info, matcher);
get_xattrs_from_fd (fd, FALSE, info, matcher);
g_file_attribute_matcher_unref (matcher);
g_file_info_unset_attribute_mask (info);
return info;
}
static gboolean
get_uint32 (const GFileAttributeValue *value,
guint32 *val_out,
GError **error)
{
if (value->type != G_FILE_ATTRIBUTE_TYPE_UINT32)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("Invalid attribute type (uint32 expected)"));
return FALSE;
}
*val_out = value->u.uint32;
return TRUE;
}
#if defined (HAVE_UTIMES) || defined (G_OS_WIN32)
static gboolean
get_uint64 (const GFileAttributeValue *value,
guint64 *val_out,
GError **error)
{
if (value->type != G_FILE_ATTRIBUTE_TYPE_UINT64)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("Invalid attribute type (uint64 expected)"));
return FALSE;
}
*val_out = value->u.uint64;
return TRUE;
}
#endif
#if defined(HAVE_SYMLINK)
static gboolean
get_byte_string (const GFileAttributeValue *value,
const char **val_out,
GError **error)
{
if (value->type != G_FILE_ATTRIBUTE_TYPE_BYTE_STRING)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("Invalid attribute type (byte string expected)"));
return FALSE;
}
*val_out = value->u.string;
return TRUE;
}
#endif
#ifdef HAVE_SELINUX
static gboolean
get_string (const GFileAttributeValue *value,
const char **val_out,
GError **error)
{
if (value->type != G_FILE_ATTRIBUTE_TYPE_STRING)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("Invalid attribute type (byte string expected)"));
return FALSE;
}
*val_out = value->u.string;
return TRUE;
}
#endif
static gboolean
set_unix_mode (char *filename,
GFileQueryInfoFlags flags,
const GFileAttributeValue *value,
GError **error)
{
guint32 val = 0;
int res = 0;
if (!get_uint32 (value, &val, error))
return FALSE;
#if defined (HAVE_SYMLINK) || defined (G_OS_WIN32)
if (flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS) {
#ifdef HAVE_LCHMOD
res = lchmod (filename, val);
#else
gboolean is_symlink;
#ifndef G_OS_WIN32
struct stat statbuf;
/* Calling chmod on a symlink changes permissions on the symlink.
* We don't want to do this, so we need to check for a symlink */
res = g_lstat (filename, &statbuf);
is_symlink = (res == 0 && S_ISLNK (statbuf.st_mode));
#else
/* FIXME: implement lchmod for W32, should be doable */
GWin32PrivateStat statbuf;
res = GLIB_PRIVATE_CALL (g_win32_lstat_utf8) (filename, &statbuf);
is_symlink = (res == 0 &&
(statbuf.reparse_tag == IO_REPARSE_TAG_SYMLINK ||
statbuf.reparse_tag == IO_REPARSE_TAG_MOUNT_POINT));
#endif
if (is_symlink)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Cannot set permissions on symlinks"));
return FALSE;
}
else if (res == 0)
res = g_chmod (filename, val);
#endif
} else
#endif
res = g_chmod (filename, val);
if (res == -1)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error setting permissions: %s"),
g_strerror (errsv));
return FALSE;
}
return TRUE;
}
#ifdef G_OS_UNIX
static gboolean
set_unix_uid_gid (char *filename,
const GFileAttributeValue *uid_value,
const GFileAttributeValue *gid_value,
GFileQueryInfoFlags flags,
GError **error)
{
int res;
guint32 val = 0;
uid_t uid;
gid_t gid;
if (uid_value)
{
if (!get_uint32 (uid_value, &val, error))
return FALSE;
uid = val;
}
else
uid = -1;
if (gid_value)
{
if (!get_uint32 (gid_value, &val, error))
return FALSE;
gid = val;
}
else
gid = -1;
#ifdef HAVE_LCHOWN
if (flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS)
res = lchown (filename, uid, gid);
else
#endif
res = chown (filename, uid, gid);
if (res == -1)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error setting owner: %s"),
g_strerror (errsv));
return FALSE;
}
return TRUE;
}
#endif
#ifdef HAVE_SYMLINK
static gboolean
set_symlink (char *filename,
const GFileAttributeValue *value,
GError **error)
{
const char *val;
struct stat statbuf;
if (!get_byte_string (value, &val, error))
return FALSE;
if (val == NULL)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("symlink must be non-NULL"));
return FALSE;
}
if (g_lstat (filename, &statbuf))
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error setting symlink: %s"),
g_strerror (errsv));
return FALSE;
}
if (!S_ISLNK (statbuf.st_mode))
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SYMBOLIC_LINK,
_("Error setting symlink: file is not a symlink"));
return FALSE;
}
if (g_unlink (filename))
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error setting symlink: %s"),
g_strerror (errsv));
return FALSE;
}
if (symlink (filename, val) != 0)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error setting symlink: %s"),
g_strerror (errsv));
return FALSE;
}
return TRUE;
}
#endif
#if defined (G_OS_WIN32)
/* From
* https://support.microsoft.com/en-ca/help/167296/how-to-convert-a-unix-time-t-to-a-win32-filetime-or-systemtime
* FT = UT * 10000000 + 116444736000000000.
* Converts unix epoch time (a signed 64-bit integer) to FILETIME.
* Can optionally use a more precise timestamp that has
* a fraction of a second expressed in nanoseconds.
* UT must be between January 1st of year 1601 and December 31st of year 30827.
* nsec must be non-negative and < 1000000000.
* Returns TRUE if conversion succeeded, FALSE otherwise.
*
* The function that does the reverse can be found in
* glib/gstdio.c.
*/
static gboolean
_g_win32_unix_time_to_filetime (gint64 ut,
gint32 nsec,
FILETIME *ft,
GError **error)
{
gint64 result;
/* 1 unit of FILETIME is 100ns */
const gint64 hundreds_of_nsec_per_sec = 10000000;
/* The difference between January 1, 1601 UTC (FILETIME epoch) and UNIX epoch
* in hundreds of nanoseconds.
*/
const gint64 filetime_unix_epoch_offset = 116444736000000000;
/* This is the maximum timestamp that SYSTEMTIME can
* represent (last millisecond of the year 30827).
* Since FILETIME and SYSTEMTIME are both used on Windows,
* we use this as a limit (FILETIME can support slightly
* larger interval, up to year 30828).
*/
const gint64 max_systemtime = 0x7fff35f4f06c58f0;
g_return_val_if_fail (ft != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
if (nsec < 0)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
_("Extra nanoseconds %d for UNIX timestamp %lld are negative"),
nsec, ut);
return FALSE;
}
if (nsec >= hundreds_of_nsec_per_sec * 100)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
_("Extra nanoseconds %d for UNIX timestamp %lld reach 1 second"),
nsec, ut);
return FALSE;
}
if (ut >= (G_MAXINT64 / hundreds_of_nsec_per_sec) ||
(ut * hundreds_of_nsec_per_sec) >= (G_MAXINT64 - filetime_unix_epoch_offset))
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
_("UNIX timestamp %lld does not fit into 64 bits"),
ut);
return FALSE;
}
result = ut * hundreds_of_nsec_per_sec + filetime_unix_epoch_offset + nsec / 100;
if (result >= max_systemtime || result < 0)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_DATA,
_("UNIX timestamp %lld is outside of the range supported by Windows"),
ut);
return FALSE;
}
ft->dwLowDateTime = (DWORD) (result);
ft->dwHighDateTime = (DWORD) (result >> 32);
return TRUE;
}
static gboolean
set_mtime_atime (const char *filename,
const GFileAttributeValue *mtime_value,
const GFileAttributeValue *mtime_usec_value,
const GFileAttributeValue *atime_value,
const GFileAttributeValue *atime_usec_value,
GError **error)
{
BOOL res;
guint64 val = 0;
guint32 val_usec = 0;
guint32 val_nsec = 0;
gunichar2 *filename_utf16;
SECURITY_ATTRIBUTES sec = { sizeof (SECURITY_ATTRIBUTES), NULL, FALSE };
HANDLE file_handle;
FILETIME mtime;
FILETIME atime;
FILETIME *p_mtime = NULL;
FILETIME *p_atime = NULL;
DWORD gle;
/* ATIME */
if (atime_value)
{
if (!get_uint64 (atime_value, &val, error))
return FALSE;
val_usec = 0;
if (atime_usec_value &&
!get_uint32 (atime_usec_value, &val_usec, error))
return FALSE;
/* Convert to nanoseconds. Clamp the usec value if it’s going to overflow,
* as %G_MAXINT32 will trigger a ‘too big’ error in
* _g_win32_unix_time_to_filetime() anyway. */
val_nsec = (val_usec > G_MAXINT32 / 1000) ? G_MAXINT32 : (val_usec * 1000);
if (!_g_win32_unix_time_to_filetime (val, val_nsec, &atime, error))
return FALSE;
p_atime = &atime;
}
/* MTIME */
if (mtime_value)
{
if (!get_uint64 (mtime_value, &val, error))
return FALSE;
val_usec = 0;
if (mtime_usec_value &&
!get_uint32 (mtime_usec_value, &val_usec, error))
return FALSE;
/* Convert to nanoseconds. Clamp the usec value if it’s going to overflow,
* as %G_MAXINT32 will trigger a ‘too big’ error in
* _g_win32_unix_time_to_filetime() anyway. */
val_nsec = (val_usec > G_MAXINT32 / 1000) ? G_MAXINT32 : (val_usec * 1000);
if (!_g_win32_unix_time_to_filetime (val, val_nsec, &mtime, error))
return FALSE;
p_mtime = &mtime;
}
filename_utf16 = g_utf8_to_utf16 (filename, -1, NULL, NULL, error);
if (filename_utf16 == NULL)
{
g_prefix_error (error,
_("File name “%s” cannot be converted to UTF-16"),
filename);
return FALSE;
}
file_handle = CreateFileW (filename_utf16,
FILE_WRITE_ATTRIBUTES,
FILE_SHARE_WRITE | FILE_SHARE_READ | FILE_SHARE_DELETE,
&sec,
OPEN_EXISTING,
FILE_FLAG_BACKUP_SEMANTICS,
NULL);
gle = GetLastError ();
g_clear_pointer (&filename_utf16, g_free);
if (file_handle == INVALID_HANDLE_VALUE)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (gle),
_("File “%s” cannot be opened: Windows Error %lu"),
filename, gle);
return FALSE;
}
res = SetFileTime (file_handle, NULL, p_atime, p_mtime);
gle = GetLastError ();
CloseHandle (file_handle);
if (!res)
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (gle),
_("Error setting modification or access time for file “%s”: %lu"),
filename, gle);
return res;
}
#elif defined (HAVE_UTIMES)
static int
lazy_stat (char *filename,
struct stat *statbuf,
gboolean *called_stat)
{
int res;
if (*called_stat)
return 0;
res = g_stat (filename, statbuf);
if (res == 0)
*called_stat = TRUE;
return res;
}
static gboolean
set_mtime_atime (char *filename,
const GFileAttributeValue *mtime_value,
const GFileAttributeValue *mtime_usec_value,
const GFileAttributeValue *atime_value,
const GFileAttributeValue *atime_usec_value,
GError **error)
{
int res;
guint64 val = 0;
guint32 val_usec = 0;
struct stat statbuf;
gboolean got_stat = FALSE;
struct timeval times[2] = { {0, 0}, {0, 0} };
/* ATIME */
if (atime_value)
{
if (!get_uint64 (atime_value, &val, error))
return FALSE;
times[0].tv_sec = val;
}
else
{
if (lazy_stat (filename, &statbuf, &got_stat) == 0)
{
times[0].tv_sec = statbuf.st_atime;
#if defined (HAVE_STRUCT_STAT_ST_ATIMENSEC)
times[0].tv_usec = statbuf.st_atimensec / 1000;
#elif defined (HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC)
times[0].tv_usec = statbuf.st_atim.tv_nsec / 1000;
#endif
}
}
if (atime_usec_value)
{
if (!get_uint32 (atime_usec_value, &val_usec, error))
return FALSE;
times[0].tv_usec = val_usec;
}
/* MTIME */
if (mtime_value)
{
if (!get_uint64 (mtime_value, &val, error))
return FALSE;
times[1].tv_sec = val;
}
else
{
if (lazy_stat (filename, &statbuf, &got_stat) == 0)
{
times[1].tv_sec = statbuf.st_mtime;
#if defined (HAVE_STRUCT_STAT_ST_MTIMENSEC)
times[1].tv_usec = statbuf.st_mtimensec / 1000;
#elif defined (HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC)
times[1].tv_usec = statbuf.st_mtim.tv_nsec / 1000;
#endif
}
}
if (mtime_usec_value)
{
if (!get_uint32 (mtime_usec_value, &val_usec, error))
return FALSE;
times[1].tv_usec = val_usec;
}
res = utimes (filename, times);
if (res == -1)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error setting modification or access time: %s"),
g_strerror (errsv));
return FALSE;
}
return TRUE;
}
#endif
#ifdef HAVE_SELINUX
static gboolean
set_selinux_context (char *filename,
const GFileAttributeValue *value,
GError **error)
{
const char *val;
if (!get_string (value, &val, error))
return FALSE;
if (val == NULL)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("SELinux context must be non-NULL"));
return FALSE;
}
if (!is_selinux_enabled ())
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_ARGUMENT,
_("SELinux is not enabled on this system"));
return FALSE;
}
if (setfilecon_raw (filename, val) < 0)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error setting SELinux context: %s"),
g_strerror (errsv));
return FALSE;
}
return TRUE;
}
#endif
gboolean
_g_local_file_info_set_attribute (char *filename,
const char *attribute,
GFileAttributeType type,
gpointer value_p,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileAttributeValue value = { 0 };
GVfsClass *class;
GVfs *vfs;
_g_file_attribute_value_set_from_pointer (&value, type, value_p, FALSE);
if (strcmp (attribute, G_FILE_ATTRIBUTE_UNIX_MODE) == 0)
return set_unix_mode (filename, flags, &value, error);
#ifdef G_OS_UNIX
else if (strcmp (attribute, G_FILE_ATTRIBUTE_UNIX_UID) == 0)
return set_unix_uid_gid (filename, &value, NULL, flags, error);
else if (strcmp (attribute, G_FILE_ATTRIBUTE_UNIX_GID) == 0)
return set_unix_uid_gid (filename, NULL, &value, flags, error);
#endif
#ifdef HAVE_SYMLINK
else if (strcmp (attribute, G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET) == 0)
return set_symlink (filename, &value, error);
#endif
#if defined (HAVE_UTIMES) || defined (G_OS_WIN32)
else if (strcmp (attribute, G_FILE_ATTRIBUTE_TIME_MODIFIED) == 0)
return set_mtime_atime (filename, &value, NULL, NULL, NULL, error);
else if (strcmp (attribute, G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC) == 0)
return set_mtime_atime (filename, NULL, &value, NULL, NULL, error);
else if (strcmp (attribute, G_FILE_ATTRIBUTE_TIME_ACCESS) == 0)
return set_mtime_atime (filename, NULL, NULL, &value, NULL, error);
else if (strcmp (attribute, G_FILE_ATTRIBUTE_TIME_ACCESS_USEC) == 0)
return set_mtime_atime (filename, NULL, NULL, NULL, &value, error);
#endif
#ifdef HAVE_XATTR
else if (g_str_has_prefix (attribute, "xattr::"))
return set_xattr (filename, attribute, &value, error);
else if (g_str_has_prefix (attribute, "xattr-sys::"))
return set_xattr (filename, attribute, &value, error);
#endif
#ifdef HAVE_SELINUX
else if (strcmp (attribute, G_FILE_ATTRIBUTE_SELINUX_CONTEXT) == 0)
return set_selinux_context (filename, &value, error);
#endif
vfs = g_vfs_get_default ();
class = G_VFS_GET_CLASS (vfs);
if (class->local_file_set_attributes)
{
GFileInfo *info;
info = g_file_info_new ();
g_file_info_set_attribute (info,
attribute,
type,
value_p);
if (!class->local_file_set_attributes (vfs, filename,
info,
flags, cancellable,
error))
{
g_object_unref (info);
return FALSE;
}
if (g_file_info_get_attribute_status (info, attribute) == G_FILE_ATTRIBUTE_STATUS_SET)
{
g_object_unref (info);
return TRUE;
}
g_object_unref (info);
}
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Setting attribute %s not supported"), attribute);
return FALSE;
}
gboolean
_g_local_file_info_set_attributes (char *filename,
GFileInfo *info,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileAttributeValue *value;
#ifdef G_OS_UNIX
GFileAttributeValue *uid, *gid;
#endif
#if defined (HAVE_UTIMES) || defined (G_OS_WIN32)
GFileAttributeValue *mtime, *mtime_usec, *atime, *atime_usec;
#endif
#if defined (G_OS_UNIX) || defined (G_OS_WIN32)
GFileAttributeStatus status;
#endif
gboolean res;
GVfsClass *class;
GVfs *vfs;
/* Handles setting multiple specified data in a single set, and takes care
of ordering restrictions when setting attributes */
res = TRUE;
/* Set symlink first, since this recreates the file */
#ifdef HAVE_SYMLINK
value = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET);
if (value)
{
if (!set_symlink (filename, value, error))
{
value->status = G_FILE_ATTRIBUTE_STATUS_ERROR_SETTING;
res = FALSE;
/* Don't set error multiple times */
error = NULL;
}
else
value->status = G_FILE_ATTRIBUTE_STATUS_SET;
}
#endif
#ifdef G_OS_UNIX
/* Group uid and gid setting into one call
* Change ownership before permissions, since ownership changes can
change permissions (e.g. setuid)
*/
uid = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_UNIX_UID);
gid = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_UNIX_GID);
if (uid || gid)
{
if (!set_unix_uid_gid (filename, uid, gid, flags, error))
{
status = G_FILE_ATTRIBUTE_STATUS_ERROR_SETTING;
res = FALSE;
/* Don't set error multiple times */
error = NULL;
}
else
status = G_FILE_ATTRIBUTE_STATUS_SET;
if (uid)
uid->status = status;
if (gid)
gid->status = status;
}
#endif
value = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_UNIX_MODE);
if (value)
{
if (!set_unix_mode (filename, flags, value, error))
{
value->status = G_FILE_ATTRIBUTE_STATUS_ERROR_SETTING;
res = FALSE;
/* Don't set error multiple times */
error = NULL;
}
else
value->status = G_FILE_ATTRIBUTE_STATUS_SET;
}
#if defined (HAVE_UTIMES) || defined (G_OS_WIN32)
/* Group all time settings into one call
* Change times as the last thing to avoid it changing due to metadata changes
*/
mtime = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_TIME_MODIFIED);
mtime_usec = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC);
atime = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_TIME_ACCESS);
atime_usec = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_TIME_ACCESS_USEC);
if (mtime || mtime_usec || atime || atime_usec)
{
if (!set_mtime_atime (filename, mtime, mtime_usec, atime, atime_usec, error))
{
status = G_FILE_ATTRIBUTE_STATUS_ERROR_SETTING;
res = FALSE;
/* Don't set error multiple times */
error = NULL;
}
else
status = G_FILE_ATTRIBUTE_STATUS_SET;
if (mtime)
mtime->status = status;
if (mtime_usec)
mtime_usec->status = status;
if (atime)
atime->status = status;
if (atime_usec)
atime_usec->status = status;
}
#endif
/* xattrs are handled by default callback */
/* SELinux context */
#ifdef HAVE_SELINUX
if (is_selinux_enabled ()) {
value = _g_file_info_get_attribute_value (info, G_FILE_ATTRIBUTE_SELINUX_CONTEXT);
if (value)
{
if (!set_selinux_context (filename, value, error))
{
value->status = G_FILE_ATTRIBUTE_STATUS_ERROR_SETTING;
res = FALSE;
/* Don't set error multiple times */
error = NULL;
}
else
value->status = G_FILE_ATTRIBUTE_STATUS_SET;
}
}
#endif
vfs = g_vfs_get_default ();
class = G_VFS_GET_CLASS (vfs);
if (class->local_file_set_attributes)
{
if (!class->local_file_set_attributes (vfs, filename,
info,
flags, cancellable,
error))
{
res = FALSE;
/* Don't set error multiple times */
error = NULL;
}
}
return res;
}
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