-/*
+/*
Unix SMB/CIFS implementation.
Directory handling routines
Copyright (C) Andrew Tridgell 1992-1998
-
+ Copyright (C) Jeremy Allison 2007
+
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
+ the Free Software Foundation; either version 3 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "smbd/globals.h"
/*
This module implements directory related functions for Samba.
*/
-typedef struct _dptr_struct {
- struct _dptr_struct *next, *prev;
+/* "Special" directory offsets. */
+#define END_OF_DIRECTORY_OFFSET ((long)-1)
+#define START_OF_DIRECTORY_OFFSET ((long)0)
+#define DOT_DOT_DIRECTORY_OFFSET ((long)0x80000000)
+
+/* Make directory handle internals available. */
+
+struct name_cache_entry {
+ char *name;
+ long offset;
+};
+
+struct smb_Dir {
+ connection_struct *conn;
+ SMB_STRUCT_DIR *dir;
+ long offset;
+ char *dir_path;
+ size_t name_cache_size;
+ struct name_cache_entry *name_cache;
+ unsigned int name_cache_index;
+ unsigned int file_number;
+};
+
+struct dptr_struct {
+ struct dptr_struct *next, *prev;
int dnum;
uint16 spid;
- connection_struct *conn;
- void *ptr;
- BOOL expect_close;
- char *wcard; /* Field only used for trans2_ searches */
- uint16 attr; /* Field only used for trans2_ searches */
+ struct connection_struct *conn;
+ struct smb_Dir *dir_hnd;
+ bool expect_close;
+ char *wcard;
+ uint32 attr;
char *path;
-} dptr_struct;
+ bool has_wild; /* Set to true if the wcard entry has MS wildcard characters in it. */
+ bool did_stat; /* Optimisation for non-wcard searches. */
+};
-static struct bitmap *dptr_bmap;
-static dptr_struct *dirptrs;
-
-static int dptrs_open = 0;
#define INVALID_DPTR_KEY (-3)
/****************************************************************************
- Initialise the dir bitmap.
+ Make a dir struct.
****************************************************************************/
-void init_dptrs(void)
+bool make_dir_struct(TALLOC_CTX *ctx,
+ char *buf,
+ const char *mask,
+ const char *fname,
+ SMB_OFF_T size,
+ uint32 mode,
+ time_t date,
+ bool uc)
{
- static BOOL dptrs_init=False;
+ char *p;
+ char *mask2 = talloc_strdup(ctx, mask);
- if (dptrs_init)
- return;
+ if (!mask2) {
+ return False;
+ }
+
+ if ((mode & aDIR) != 0) {
+ size = 0;
+ }
+
+ memset(buf+1,' ',11);
+ if ((p = strchr_m(mask2,'.')) != NULL) {
+ *p = 0;
+ push_ascii(buf+1,mask2,8, 0);
+ push_ascii(buf+9,p+1,3, 0);
+ *p = '.';
+ } else {
+ push_ascii(buf+1,mask2,11, 0);
+ }
+
+ memset(buf+21,'\0',DIR_STRUCT_SIZE-21);
+ SCVAL(buf,21,mode);
+ srv_put_dos_date(buf,22,date);
+ SSVAL(buf,26,size & 0xFFFF);
+ SSVAL(buf,28,(size >> 16)&0xFFFF);
+ /* We only uppercase if FLAGS2_LONG_PATH_COMPONENTS is zero in the input buf.
+ Strange, but verified on W2K3. Needed for OS/2. JRA. */
+ push_ascii(buf+30,fname,12, uc ? STR_UPPER : 0);
+ DEBUG(8,("put name [%s] from [%s] into dir struct\n",buf+30, fname));
+ return True;
+}
+
+/****************************************************************************
+ Initialise the dir bitmap.
+****************************************************************************/
+
+bool init_dptrs(struct smbd_server_connection *sconn)
+{
+ if (sconn->smb1.searches.dptr_bmap) {
+ return true;
+ }
- dptr_bmap = bitmap_allocate(MAX_DIRECTORY_HANDLES);
+ sconn->smb1.searches.dptr_bmap = bitmap_allocate(MAX_DIRECTORY_HANDLES);
- if (!dptr_bmap)
- exit_server("out of memory in init_dptrs");
+ if (sconn->smb1.searches.dptr_bmap == NULL) {
+ return false;
+ }
- dptrs_init = True;
+ return true;
}
/****************************************************************************
Idle a dptr - the directory is closed but the control info is kept.
****************************************************************************/
-static void dptr_idle(dptr_struct *dptr)
+static void dptr_idle(struct dptr_struct *dptr)
{
- if (dptr->ptr) {
+ if (dptr->dir_hnd) {
DEBUG(4,("Idling dptr dnum %d\n",dptr->dnum));
- dptrs_open--;
- CloseDir(dptr->ptr);
- dptr->ptr = NULL;
+ TALLOC_FREE(dptr->dir_hnd);
}
}
Idle the oldest dptr.
****************************************************************************/
-static void dptr_idleoldest(void)
+static void dptr_idleoldest(struct smbd_server_connection *sconn)
{
- dptr_struct *dptr;
+ struct dptr_struct *dptr;
/*
* Go to the end of the list.
*/
- for(dptr = dirptrs; dptr && dptr->next; dptr = dptr->next)
+ for(dptr = sconn->smb1.searches.dirptrs; dptr && dptr->next; dptr = dptr->next)
;
if(!dptr) {
*/
for(; dptr; dptr = dptr->prev) {
- if (dptr->ptr) {
+ if (dptr->dir_hnd) {
dptr_idle(dptr);
return;
}
}
/****************************************************************************
- Get the dptr_struct for a dir index.
+ Get the struct dptr_struct for a dir index.
****************************************************************************/
-static dptr_struct *dptr_get(int key, BOOL forclose)
+static struct dptr_struct *dptr_get(struct smbd_server_connection *sconn,
+ int key, bool forclose)
{
- dptr_struct *dptr;
+ struct dptr_struct *dptr;
- for(dptr = dirptrs; dptr; dptr = dptr->next) {
+ for(dptr = sconn->smb1.searches.dirptrs; dptr; dptr = dptr->next) {
if(dptr->dnum == key) {
- if (!forclose && !dptr->ptr) {
- if (dptrs_open >= MAX_OPEN_DIRECTORIES)
- dptr_idleoldest();
- DEBUG(4,("Reopening dptr key %d\n",key));
- if ((dptr->ptr = OpenDir(dptr->conn, dptr->path, True)))
- dptrs_open++;
+ if (!forclose && !dptr->dir_hnd) {
+ if (sconn->smb1.searches.dirhandles_open >= MAX_OPEN_DIRECTORIES)
+ dptr_idleoldest(sconn);
+ DEBUG(4,("dptr_get: Reopening dptr key %d\n",key));
+ if (!(dptr->dir_hnd = OpenDir(
+ NULL, dptr->conn, dptr->path,
+ dptr->wcard, dptr->attr))) {
+ DEBUG(4,("dptr_get: Failed to open %s (%s)\n",dptr->path,
+ strerror(errno)));
+ return False;
+ }
}
- DLIST_PROMOTE(dirptrs,dptr);
+ DLIST_PROMOTE(sconn->smb1.searches.dirptrs,dptr);
return dptr;
}
}
return(NULL);
}
-/****************************************************************************
- Get the dptr ptr for a dir index.
-****************************************************************************/
-
-static void *dptr_ptr(int key)
-{
- dptr_struct *dptr = dptr_get(key, False);
-
- if (dptr)
- return(dptr->ptr);
- return(NULL);
-}
-
/****************************************************************************
Get the dir path for a dir index.
****************************************************************************/
-char *dptr_path(int key)
+char *dptr_path(struct smbd_server_connection *sconn, int key)
{
- dptr_struct *dptr = dptr_get(key, False);
-
+ struct dptr_struct *dptr = dptr_get(sconn, key, false);
if (dptr)
return(dptr->path);
return(NULL);
}
/****************************************************************************
- Get the dir wcard for a dir index (lanman2 specific).
+ Get the dir wcard for a dir index.
****************************************************************************/
-char *dptr_wcard(int key)
+char *dptr_wcard(struct smbd_server_connection *sconn, int key)
{
- dptr_struct *dptr = dptr_get(key, False);
-
+ struct dptr_struct *dptr = dptr_get(sconn, key, false);
if (dptr)
return(dptr->wcard);
return(NULL);
}
/****************************************************************************
- Set the dir wcard for a dir index (lanman2 specific).
- Returns 0 on ok, 1 on fail.
-****************************************************************************/
-
-BOOL dptr_set_wcard(int key, char *wcard)
-{
- dptr_struct *dptr = dptr_get(key, False);
-
- if (dptr) {
- dptr->wcard = wcard;
- return True;
- }
- return False;
-}
-
-/****************************************************************************
- Set the dir attrib for a dir index (lanman2 specific).
- Returns 0 on ok, 1 on fail.
-****************************************************************************/
-
-BOOL dptr_set_attr(int key, uint16 attr)
-{
- dptr_struct *dptr = dptr_get(key, False);
-
- if (dptr) {
- dptr->attr = attr;
- return True;
- }
- return False;
-}
-
-/****************************************************************************
- Get the dir attrib for a dir index (lanman2 specific)
+ Get the dir attrib for a dir index.
****************************************************************************/
-uint16 dptr_attr(int key)
+uint16 dptr_attr(struct smbd_server_connection *sconn, int key)
{
- dptr_struct *dptr = dptr_get(key, False);
-
+ struct dptr_struct *dptr = dptr_get(sconn, key, false);
if (dptr)
return(dptr->attr);
return(0);
Close a dptr (internal func).
****************************************************************************/
-static void dptr_close_internal(dptr_struct *dptr)
+static void dptr_close_internal(struct dptr_struct *dptr)
{
+ struct smbd_server_connection *sconn = dptr->conn->sconn;
+
DEBUG(4,("closing dptr key %d\n",dptr->dnum));
- DLIST_REMOVE(dirptrs, dptr);
+ if (sconn == NULL) {
+ goto done;
+ }
+
+ DLIST_REMOVE(sconn->smb1.searches.dirptrs, dptr);
- /*
+ /*
* Free the dnum in the bitmap. Remember the dnum value is always
* biased by one with respect to the bitmap.
*/
- if(bitmap_query( dptr_bmap, dptr->dnum - 1) != True) {
+ if(bitmap_query(sconn->smb1.searches.dptr_bmap, dptr->dnum - 1) != true) {
DEBUG(0,("dptr_close_internal : Error - closing dnum = %d and bitmap not set !\n",
dptr->dnum ));
}
- bitmap_clear(dptr_bmap, dptr->dnum - 1);
+ bitmap_clear(sconn->smb1.searches.dptr_bmap, dptr->dnum - 1);
- if (dptr->ptr) {
- CloseDir(dptr->ptr);
- dptrs_open--;
- }
+done:
+ TALLOC_FREE(dptr->dir_hnd);
/* Lanman 2 specific code */
SAFE_FREE(dptr->wcard);
Close a dptr given a key.
****************************************************************************/
-void dptr_close(int *key)
+void dptr_close(struct smbd_server_connection *sconn, int *key)
{
- dptr_struct *dptr;
+ struct dptr_struct *dptr;
if(*key == INVALID_DPTR_KEY)
return;
/* OS/2 seems to use -1 to indicate "close all directories" */
if (*key == -1) {
- dptr_struct *next;
- for(dptr = dirptrs; dptr; dptr = next) {
+ struct dptr_struct *next;
+ for(dptr = sconn->smb1.searches.dirptrs; dptr; dptr = next) {
next = dptr->next;
dptr_close_internal(dptr);
}
return;
}
- dptr = dptr_get(*key, True);
+ dptr = dptr_get(sconn, *key, true);
if (!dptr) {
DEBUG(0,("Invalid key %d given to dptr_close\n", *key));
void dptr_closecnum(connection_struct *conn)
{
- dptr_struct *dptr, *next;
- for(dptr = dirptrs; dptr; dptr = next) {
+ struct dptr_struct *dptr, *next;
+ struct smbd_server_connection *sconn = conn->sconn;
+
+ if (sconn == NULL) {
+ return;
+ }
+
+ for(dptr = sconn->smb1.searches.dirptrs; dptr; dptr = next) {
next = dptr->next;
- if (dptr->conn == conn)
+ if (dptr->conn == conn) {
dptr_close_internal(dptr);
+ }
}
}
void dptr_idlecnum(connection_struct *conn)
{
- dptr_struct *dptr;
- for(dptr = dirptrs; dptr; dptr = dptr->next) {
- if (dptr->conn == conn && dptr->ptr)
+ struct dptr_struct *dptr;
+ struct smbd_server_connection *sconn = conn->sconn;
+
+ if (sconn == NULL) {
+ return;
+ }
+
+ for(dptr = sconn->smb1.searches.dirptrs; dptr; dptr = dptr->next) {
+ if (dptr->conn == conn && dptr->dir_hnd) {
dptr_idle(dptr);
+ }
}
}
Close a dptr that matches a given path, only if it matches the spid also.
****************************************************************************/
-void dptr_closepath(char *path,uint16 spid)
+void dptr_closepath(struct smbd_server_connection *sconn,
+ char *path,uint16 spid)
{
- dptr_struct *dptr, *next;
- for(dptr = dirptrs; dptr; dptr = next) {
+ struct dptr_struct *dptr, *next;
+ for(dptr = sconn->smb1.searches.dirptrs; dptr; dptr = next) {
next = dptr->next;
if (spid == dptr->spid && strequal(dptr->path,path))
dptr_close_internal(dptr);
}
}
-/****************************************************************************
- Start a directory listing.
-****************************************************************************/
-
-static BOOL start_dir(connection_struct *conn, pstring directory)
-{
- const char *dir2;
-
- DEBUG(5,("start_dir dir=%s\n",directory));
-
- if (!check_name(directory,conn))
- return(False);
-
- /* use a const pointer from here on */
- dir2 = directory;
-
- if (! *dir2)
- dir2 = ".";
-
- conn->dirptr = OpenDir(conn, directory, True);
- if (conn->dirptr) {
- dptrs_open++;
- string_set(&conn->dirpath,directory);
- return(True);
- }
-
- return(False);
-}
-
/****************************************************************************
Try and close the oldest handle not marked for
expect close in the hope that the client has
finished with that one.
****************************************************************************/
-static void dptr_close_oldest(BOOL old)
+static void dptr_close_oldest(struct smbd_server_connection *sconn,
+ bool old)
{
- dptr_struct *dptr;
+ struct dptr_struct *dptr;
/*
* Go to the end of the list.
*/
- for(dptr = dirptrs; dptr && dptr->next; dptr = dptr->next)
+ for(dptr = sconn->smb1.searches.dirptrs; dptr && dptr->next; dptr = dptr->next)
;
if(!dptr) {
from the bitmap range 0 - 255 as old SMBsearch directory handles are only
one byte long. If old_handle is false we allocate from the range
256 - MAX_DIRECTORY_HANDLES. We bias the number we return by 1 to ensure
- a directory handle is never zero. All the above is folklore taught to
- me at Andrew's knee.... :-) :-). JRA.
+ a directory handle is never zero.
+ wcard must not be zero.
****************************************************************************/
-int dptr_create(connection_struct *conn, pstring path, BOOL old_handle, BOOL expect_close,uint16 spid)
+NTSTATUS dptr_create(connection_struct *conn, const char *path, bool old_handle, bool expect_close,uint16 spid,
+ const char *wcard, bool wcard_has_wild, uint32 attr, struct dptr_struct **dptr_ret)
{
- dptr_struct *dptr;
+ struct smbd_server_connection *sconn = conn->sconn;
+ struct dptr_struct *dptr = NULL;
+ struct smb_Dir *dir_hnd;
+ NTSTATUS status;
+
+ DEBUG(5,("dptr_create dir=%s\n", path));
+
+ if (sconn == NULL) {
+ DEBUG(0,("dptr_create: called with fake connection_struct\n"));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ if (!wcard) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ status = check_name(conn,path);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
- if (!start_dir(conn,path))
- return(-2); /* Code to say use a unix error return code. */
+ dir_hnd = OpenDir(NULL, conn, path, wcard, attr);
+ if (!dir_hnd) {
+ return map_nt_error_from_unix(errno);
+ }
- if (dptrs_open >= MAX_OPEN_DIRECTORIES)
- dptr_idleoldest();
+ if (sconn->smb1.searches.dirhandles_open >= MAX_OPEN_DIRECTORIES) {
+ dptr_idleoldest(sconn);
+ }
- dptr = SMB_MALLOC_P(dptr_struct);
+ dptr = SMB_MALLOC_P(struct dptr_struct);
if(!dptr) {
DEBUG(0,("malloc fail in dptr_create.\n"));
- return -1;
+ TALLOC_FREE(dir_hnd);
+ return NT_STATUS_NO_MEMORY;
}
ZERO_STRUCTP(dptr);
* value we return will fit in the range 1-255.
*/
- dptr->dnum = bitmap_find(dptr_bmap, 0);
+ dptr->dnum = bitmap_find(sconn->smb1.searches.dptr_bmap, 0);
if(dptr->dnum == -1 || dptr->dnum > 254) {
* finished with that one.
*/
- dptr_close_oldest(True);
+ dptr_close_oldest(sconn, true);
/* Now try again... */
- dptr->dnum = bitmap_find(dptr_bmap, 0);
+ dptr->dnum = bitmap_find(sconn->smb1.searches.dptr_bmap, 0);
if(dptr->dnum == -1 || dptr->dnum > 254) {
DEBUG(0,("dptr_create: returned %d: Error - all old dirptrs in use ?\n", dptr->dnum));
SAFE_FREE(dptr);
- return -1;
+ TALLOC_FREE(dir_hnd);
+ return NT_STATUS_TOO_MANY_OPENED_FILES;
}
}
} else {
* a range that will return 256 - MAX_DIRECTORY_HANDLES.
*/
- dptr->dnum = bitmap_find(dptr_bmap, 255);
+ dptr->dnum = bitmap_find(sconn->smb1.searches.dptr_bmap, 255);
if(dptr->dnum == -1 || dptr->dnum < 255) {
* directory handles.
*/
- dptr_close_oldest(False);
+ dptr_close_oldest(sconn, false);
/* Now try again... */
- dptr->dnum = bitmap_find(dptr_bmap, 255);
+ dptr->dnum = bitmap_find(sconn->smb1.searches.dptr_bmap, 255);
if(dptr->dnum == -1 || dptr->dnum < 255) {
DEBUG(0,("dptr_create: returned %d: Error - all new dirptrs in use ?\n", dptr->dnum));
SAFE_FREE(dptr);
- return -1;
+ TALLOC_FREE(dir_hnd);
+ return NT_STATUS_TOO_MANY_OPENED_FILES;
}
}
}
- bitmap_set(dptr_bmap, dptr->dnum);
+ bitmap_set(sconn->smb1.searches.dptr_bmap, dptr->dnum);
dptr->dnum += 1; /* Always bias the dnum by one - no zero dnums allowed. */
- dptr->ptr = conn->dirptr;
string_set(&dptr->path,path);
dptr->conn = conn;
+ dptr->dir_hnd = dir_hnd;
dptr->spid = spid;
dptr->expect_close = expect_close;
- dptr->wcard = NULL; /* Only used in lanman2 searches */
- dptr->attr = 0; /* Only used in lanman2 searches */
+ dptr->wcard = SMB_STRDUP(wcard);
+ if (!dptr->wcard) {
+ bitmap_clear(sconn->smb1.searches.dptr_bmap, dptr->dnum - 1);
+ SAFE_FREE(dptr);
+ TALLOC_FREE(dir_hnd);
+ return NT_STATUS_NO_MEMORY;
+ }
+ if (lp_posix_pathnames() || (wcard[0] == '.' && wcard[1] == 0)) {
+ dptr->has_wild = True;
+ } else {
+ dptr->has_wild = wcard_has_wild;
+ }
- DLIST_ADD(dirptrs, dptr);
+ dptr->attr = attr;
+
+ DLIST_ADD(sconn->smb1.searches.dirptrs, dptr);
DEBUG(3,("creating new dirptr %d for path %s, expect_close = %d\n",
dptr->dnum,path,expect_close));
- return(dptr->dnum);
+ *dptr_ret = dptr;
+
+ return NT_STATUS_OK;
+}
+
+
+/****************************************************************************
+ Wrapper functions to access the lower level directory handles.
+****************************************************************************/
+
+int dptr_CloseDir(struct dptr_struct *dptr)
+{
+ struct smbd_server_connection *sconn = dptr->conn->sconn;
+ DLIST_REMOVE(sconn->smb1.searches.dirptrs, dptr);
+ TALLOC_FREE(dptr->dir_hnd);
+ return 0;
+}
+
+void dptr_SeekDir(struct dptr_struct *dptr, long offset)
+{
+ SeekDir(dptr->dir_hnd, offset);
+}
+
+long dptr_TellDir(struct dptr_struct *dptr)
+{
+ return TellDir(dptr->dir_hnd);
+}
+
+bool dptr_has_wild(struct dptr_struct *dptr)
+{
+ return dptr->has_wild;
+}
+
+int dptr_dnum(struct dptr_struct *dptr)
+{
+ return dptr->dnum;
+}
+
+/****************************************************************************
+ Return the next visible file name, skipping veto'd and invisible files.
+****************************************************************************/
+
+static char *dptr_normal_ReadDirName(struct dptr_struct *dptr,
+ long *poffset, SMB_STRUCT_STAT *pst)
+{
+ /* Normal search for the next file. */
+ char *name;
+ while ((name = ReadDirName(dptr->dir_hnd, poffset, pst)) != NULL) {
+ if (is_visible_file(dptr->conn, dptr->path, name, pst, True)) {
+ return name;
+ }
+ TALLOC_FREE(name);
+ }
+ return NULL;
+}
+
+/****************************************************************************
+ Return the next visible file name, skipping veto'd and invisible files.
+****************************************************************************/
+
+char *dptr_ReadDirName(TALLOC_CTX *ctx,
+ struct dptr_struct *dptr,
+ long *poffset,
+ SMB_STRUCT_STAT *pst)
+{
+ struct smb_filename *smb_fname_base = NULL;
+ char *name = NULL;
+ char *pathreal = NULL;
+ char *found_name = NULL;
+ int ret;
+ NTSTATUS status;
+
+ SET_STAT_INVALID(*pst);
+
+ if (dptr->has_wild || dptr->did_stat) {
+ name = dptr_normal_ReadDirName(dptr, poffset, pst);
+ return name;
+ }
+
+ /* If poffset is -1 then we know we returned this name before and we
+ * have no wildcards. We're at the end of the directory. */
+ if (*poffset == END_OF_DIRECTORY_OFFSET) {
+ return NULL;
+ }
+
+ /* We know the stored wcard contains no wildcard characters.
+ * See if we can match with a stat call. If we can't, then set
+ * did_stat to true to ensure we only do this once and keep
+ * searching. */
+
+ dptr->did_stat = true;
+
+ /* First check if it should be visible. */
+ if (!is_visible_file(dptr->conn, dptr->path, dptr->wcard,
+ pst, true))
+ {
+ /* This only returns false if the file was found, but
+ is explicitly not visible. Set us to end of
+ directory, but return NULL as we know we can't ever
+ find it. */
+ goto ret;
+ }
+
+ if (VALID_STAT(*pst)) {
+ name = talloc_strdup(ctx, dptr->wcard);
+ goto ret;
+ }
+
+ pathreal = talloc_asprintf(ctx,
+ "%s/%s",
+ dptr->path,
+ dptr->wcard);
+ if (!pathreal)
+ return NULL;
+
+ /* Create an smb_filename with stream_name == NULL. */
+ status = create_synthetic_smb_fname(ctx, pathreal, NULL, NULL,
+ &smb_fname_base);
+ if (!NT_STATUS_IS_OK(status)) {
+ return NULL;
+ }
+
+ if (SMB_VFS_STAT(dptr->conn, smb_fname_base) == 0) {
+ *pst = smb_fname_base->st;
+ TALLOC_FREE(smb_fname_base);
+ name = talloc_strdup(ctx, dptr->wcard);
+ goto clean;
+ } else {
+ TALLOC_FREE(smb_fname_base);
+ /* If we get any other error than ENOENT or ENOTDIR
+ then the file exists we just can't stat it. */
+ if (errno != ENOENT && errno != ENOTDIR) {
+ name = talloc_strdup(ctx, dptr->wcard);
+ goto clean;
+ }
+ }
+
+ /* Stat failed. We know this is authoratiative if we are
+ * providing case sensitive semantics or the underlying
+ * filesystem is case sensitive.
+ */
+ if (dptr->conn->case_sensitive ||
+ !(dptr->conn->fs_capabilities & FILE_CASE_SENSITIVE_SEARCH))
+ {
+ goto clean;
+ }
+
+ /*
+ * Try case-insensitive stat if the fs has the ability. This avoids
+ * scanning the whole directory.
+ */
+ ret = SMB_VFS_GET_REAL_FILENAME(dptr->conn, dptr->path, dptr->wcard,
+ ctx, &found_name);
+ if (ret == 0) {
+ name = found_name;
+ goto clean;
+ } else if (errno == ENOENT) {
+ /* The case-insensitive lookup was authoritative. */
+ goto clean;
+ }
+
+ TALLOC_FREE(pathreal);
+
+ name = dptr_normal_ReadDirName(dptr, poffset, pst);
+
+ return name;
+
+clean:
+ TALLOC_FREE(pathreal);
+ret:
+ /* We need to set the underlying dir_hnd offset to -1
+ * also as this function is usually called with the
+ * output from TellDir. */
+ dptr->dir_hnd->offset = *poffset = END_OF_DIRECTORY_OFFSET;
+ return name;
+}
+
+/****************************************************************************
+ Search for a file by name, skipping veto'ed and not visible files.
+****************************************************************************/
+
+bool dptr_SearchDir(struct dptr_struct *dptr, const char *name, long *poffset, SMB_STRUCT_STAT *pst)
+{
+ SET_STAT_INVALID(*pst);
+
+ if (!dptr->has_wild && (dptr->dir_hnd->offset == END_OF_DIRECTORY_OFFSET)) {
+ /* This is a singleton directory and we're already at the end. */
+ *poffset = END_OF_DIRECTORY_OFFSET;
+ return False;
+ }
+
+ return SearchDir(dptr->dir_hnd, name, poffset);
+}
+
+/****************************************************************************
+ Add the name we're returning into the underlying cache.
+****************************************************************************/
+
+void dptr_DirCacheAdd(struct dptr_struct *dptr, const char *name, long offset)
+{
+ DirCacheAdd(dptr->dir_hnd, name, offset);
+}
+
+/****************************************************************************
+ Initialize variables & state data at the beginning of all search SMB requests.
+****************************************************************************/
+void dptr_init_search_op(struct dptr_struct *dptr)
+{
+ SMB_VFS_INIT_SEARCH_OP(dptr->conn, dptr->dir_hnd->dir);
}
/****************************************************************************
Fill the 5 byte server reserved dptr field.
****************************************************************************/
-BOOL dptr_fill(char *buf1,unsigned int key)
+bool dptr_fill(struct smbd_server_connection *sconn,
+ char *buf1,unsigned int key)
{
unsigned char *buf = (unsigned char *)buf1;
- void *p = dptr_ptr(key);
+ struct dptr_struct *dptr = dptr_get(sconn, key, false);
uint32 offset;
- if (!p) {
+ if (!dptr) {
DEBUG(1,("filling null dirptr %d\n",key));
return(False);
}
- offset = TellDir(p);
+ offset = (uint32)TellDir(dptr->dir_hnd);
DEBUG(6,("fill on key %u dirptr 0x%lx now at %d\n",key,
- (long)p,(int)offset));
+ (long)dptr->dir_hnd,(int)offset));
buf[0] = key;
- SIVAL(buf,1,offset | DPTR_MASK);
+ SIVAL(buf,1,offset);
return(True);
}
Fetch the dir ptr and seek it given the 5 byte server field.
****************************************************************************/
-void *dptr_fetch(char *buf,int *num)
+struct dptr_struct *dptr_fetch(struct smbd_server_connection *sconn,
+ char *buf, int *num)
{
unsigned int key = *(unsigned char *)buf;
- void *p = dptr_ptr(key);
+ struct dptr_struct *dptr = dptr_get(sconn, key, false);
uint32 offset;
+ long seekoff;
- if (!p) {
+ if (!dptr) {
DEBUG(3,("fetched null dirptr %d\n",key));
return(NULL);
}
*num = key;
- offset = IVAL(buf,1)&~DPTR_MASK;
- SeekDir(p,offset);
+ offset = IVAL(buf,1);
+ if (offset == (uint32)-1) {
+ seekoff = END_OF_DIRECTORY_OFFSET;
+ } else {
+ seekoff = (long)offset;
+ }
+ SeekDir(dptr->dir_hnd,seekoff);
DEBUG(3,("fetching dirptr %d for path %s at offset %d\n",
- key,dptr_path(key),offset));
- return(p);
+ key, dptr->path, (int)seekoff));
+ return(dptr);
}
/****************************************************************************
Fetch the dir ptr.
****************************************************************************/
-void *dptr_fetch_lanman2(int dptr_num)
+struct dptr_struct *dptr_fetch_lanman2(struct smbd_server_connection *sconn,
+ int dptr_num)
{
- void *p = dptr_ptr(dptr_num);
+ struct dptr_struct *dptr = dptr_get(sconn, dptr_num, false);
- if (!p) {
+ if (!dptr) {
DEBUG(3,("fetched null dirptr %d\n",dptr_num));
return(NULL);
}
- DEBUG(3,("fetching dirptr %d for path %s\n",dptr_num,dptr_path(dptr_num)));
- return(p);
+ DEBUG(3,("fetching dirptr %d for path %s\n",dptr_num,dptr->path));
+ return(dptr);
}
/****************************************************************************
- Check a filetype for being valid.
+ Check that a file matches a particular file type.
****************************************************************************/
-BOOL dir_check_ftype(connection_struct *conn,int mode,SMB_STRUCT_STAT *st,int dirtype)
+bool dir_check_ftype(connection_struct *conn, uint32 mode, uint32 dirtype)
{
- int mask;
+ uint32 mask;
/* Check the "may have" search bits. */
if (((mode & ~dirtype) & (aHIDDEN | aSYSTEM | aDIR)) != 0)
return True;
}
-static BOOL mangle_mask_match(connection_struct *conn, fstring filename, char *mask)
+static bool mangle_mask_match(connection_struct *conn,
+ const char *filename,
+ const char *mask)
{
- mangle_map(filename,True,False,SNUM(conn));
- return mask_match(filename,mask,False);
-}
+ char mname[13];
-/****************************************************************************
- Get an 8.3 directory entry.
-****************************************************************************/
+ if (!name_to_8_3(filename,mname,False,conn->params)) {
+ return False;
+ }
+ return mask_match_search(mname,mask,False);
+}
-BOOL get_dir_entry(connection_struct *conn,char *mask,int dirtype, pstring fname,
- SMB_OFF_T *size,int *mode,time_t *date,BOOL check_descend)
+bool smbd_dirptr_get_entry(TALLOC_CTX *ctx,
+ struct dptr_struct *dirptr,
+ const char *mask,
+ uint32_t dirtype,
+ bool dont_descend,
+ bool ask_sharemode,
+ bool (*match_fn)(TALLOC_CTX *ctx,
+ void *private_data,
+ const char *dname,
+ const char *mask,
+ char **_fname),
+ bool (*mode_fn)(TALLOC_CTX *ctx,
+ void *private_data,
+ struct smb_filename *smb_fname,
+ uint32_t *_mode),
+ void *private_data,
+ char **_fname,
+ struct smb_filename **_smb_fname,
+ uint32_t *_mode,
+ long *_prev_offset)
{
- const char *dname;
- BOOL found = False;
- SMB_STRUCT_STAT sbuf;
- pstring path;
- pstring pathreal;
- BOOL isrootdir;
- pstring filename;
- BOOL needslash;
+ connection_struct *conn = dirptr->conn;
+ bool needslash;
+
+ *_smb_fname = NULL;
+ *_mode = 0;
+
+ needslash = ( dirptr->path[strlen(dirptr->path) -1] != '/');
+
+ while (true) {
+ long cur_offset;
+ long prev_offset;
+ SMB_STRUCT_STAT sbuf;
+ char *dname = NULL;
+ bool isdots;
+ char *fname = NULL;
+ char *pathreal = NULL;
+ struct smb_filename *smb_fname = NULL;
+ uint32_t mode = 0;
+ bool ok;
+ NTSTATUS status;
+
+ cur_offset = dptr_TellDir(dirptr);
+ prev_offset = cur_offset;
+ dname = dptr_ReadDirName(ctx, dirptr, &cur_offset, &sbuf);
+
+ DEBUG(6,("smbd_dirptr_get_entry: dirptr 0x%lx now at offset %ld\n",
+ (long)dirptr, cur_offset));
+
+ if (dname == NULL) {
+ return false;
+ }
- *path = *pathreal = *filename = 0;
+ isdots = (ISDOT(dname) || ISDOTDOT(dname));
+ if (dont_descend && !isdots) {
+ TALLOC_FREE(dname);
+ continue;
+ }
- isrootdir = (strequal(conn->dirpath,"./") ||
- strequal(conn->dirpath,".") ||
- strequal(conn->dirpath,"/"));
-
- needslash = ( conn->dirpath[strlen(conn->dirpath) -1] != '/');
+ /*
+ * fname may get mangled, dname is never mangled.
+ * Whenever we're accessing the filesystem we use
+ * pathreal which is composed from dname.
+ */
- if (!conn->dirptr)
- return(False);
+ ok = match_fn(ctx, private_data, dname, mask, &fname);
+ if (!ok) {
+ TALLOC_FREE(dname);
+ continue;
+ }
- while (!found) {
- dname = ReadDirName(conn->dirptr);
-
- DEBUG(6,("readdir on dirptr 0x%lx now at offset %d\n",
- (long)conn->dirptr,TellDir(conn->dirptr)));
-
- if (dname == NULL)
- return(False);
-
- pstrcpy(filename,dname);
-
- /* notice the special *.* handling. This appears to be the only difference
- between the wildcard handling in this routine and in the trans2 routines.
- see masktest for a demo
- */
- if ((strcmp(mask,"*.*") == 0) ||
- mask_match(filename,mask,False) ||
- mangle_mask_match(conn,filename,mask)) {
- if (isrootdir && (strequal(filename,"..") || strequal(filename,".")))
- continue;
+ pathreal = talloc_asprintf(ctx, "%s%s%s",
+ dirptr->path,
+ needslash?"/":"",
+ dname);
+ if (!pathreal) {
+ TALLOC_FREE(dname);
+ TALLOC_FREE(fname);
+ return false;
+ }
- if (!mangle_is_8_3(filename, False))
- mangle_map(filename,True,False,SNUM(conn));
-
- pstrcpy(fname,filename);
- *path = 0;
- pstrcpy(path,conn->dirpath);
- if(needslash)
- pstrcat(path,"/");
- pstrcpy(pathreal,path);
- pstrcat(path,fname);
- pstrcat(pathreal,dname);
- if (SMB_VFS_STAT(conn, pathreal, &sbuf) != 0) {
- DEBUG(5,("Couldn't stat 1 [%s]. Error = %s\n",path, strerror(errno) ));
- continue;
+ /* Create smb_fname with NULL stream_name. */
+ status = create_synthetic_smb_fname(ctx, pathreal,
+ NULL, &sbuf,
+ &smb_fname);
+ TALLOC_FREE(pathreal);
+ if (!NT_STATUS_IS_OK(status)) {
+ TALLOC_FREE(dname);
+ TALLOC_FREE(fname);
+ return false;
+ }
+
+ ok = mode_fn(ctx, private_data, smb_fname, &mode);
+ if (!ok) {
+ TALLOC_FREE(dname);
+ TALLOC_FREE(fname);
+ TALLOC_FREE(smb_fname);
+ continue;
+ }
+
+ if (!dir_check_ftype(conn, mode, dirtype)) {
+ DEBUG(5,("[%s] attribs 0x%x didn't match 0x%x\n",
+ fname, (unsigned int)mode, (unsigned int)dirtype));
+ TALLOC_FREE(dname);
+ TALLOC_FREE(fname);
+ TALLOC_FREE(smb_fname);
+ continue;
+ }
+
+ if (ask_sharemode) {
+ struct timespec write_time_ts;
+ struct file_id fileid;
+
+ fileid = vfs_file_id_from_sbuf(conn,
+ &smb_fname->st);
+ get_file_infos(fileid, NULL, &write_time_ts);
+ if (!null_timespec(write_time_ts)) {
+ update_stat_ex_mtime(&smb_fname->st,
+ write_time_ts);
}
-
- *mode = dos_mode(conn,pathreal,&sbuf);
+ }
- if (!dir_check_ftype(conn,*mode,&sbuf,dirtype)) {
- DEBUG(5,("[%s] attribs didn't match %x\n",filename,dirtype));
- continue;
+ DEBUG(3,("smbd_dirptr_get_entry mask=[%s] found %s "
+ "fname=%s (%s)\n",
+ mask, smb_fname_str_dbg(smb_fname),
+ dname, fname));
+
+ DirCacheAdd(dirptr->dir_hnd, dname, cur_offset);
+
+ TALLOC_FREE(dname);
+
+ *_fname = fname;
+ *_smb_fname = smb_fname;
+ *_mode = mode;
+ *_prev_offset = prev_offset;
+
+ return true;
+ }
+
+ return false;
+}
+
+/****************************************************************************
+ Get an 8.3 directory entry.
+****************************************************************************/
+
+static bool smbd_dirptr_8_3_match_fn(TALLOC_CTX *ctx,
+ void *private_data,
+ const char *dname,
+ const char *mask,
+ char **_fname)
+{
+ connection_struct *conn = (connection_struct *)private_data;
+
+ if ((strcmp(mask,"*.*") == 0) ||
+ mask_match_search(dname, mask, false) ||
+ mangle_mask_match(conn, dname, mask)) {
+ char mname[13];
+ const char *fname;
+
+ if (!mangle_is_8_3(dname, false, conn->params)) {
+ bool ok = name_to_8_3(dname, mname, false,
+ conn->params);
+ if (!ok) {
+ return false;
}
+ fname = mname;
+ } else {
+ fname = dname;
+ }
- *size = sbuf.st_size;
- *date = sbuf.st_mtime;
+ *_fname = talloc_strdup(ctx, fname);
+ if (*_fname == NULL) {
+ return false;
+ }
+
+ return true;
+ }
- DEBUG(3,("get_dir_entry mask=[%s] found %s fname=%s\n",mask, pathreal,fname));
+ return false;
+}
- found = True;
+static bool smbd_dirptr_8_3_mode_fn(TALLOC_CTX *ctx,
+ void *private_data,
+ struct smb_filename *smb_fname,
+ uint32_t *_mode)
+{
+ connection_struct *conn = (connection_struct *)private_data;
+
+ if (!VALID_STAT(smb_fname->st)) {
+ if ((SMB_VFS_STAT(conn, smb_fname)) != 0) {
+ DEBUG(5,("smbd_dirptr_8_3_mode_fn: "
+ "Couldn't stat [%s]. Error "
+ "= %s\n",
+ smb_fname_str_dbg(smb_fname),
+ strerror(errno)));
+ return false;
}
}
- return(found);
+ *_mode = dos_mode(conn, smb_fname);
+ return true;
}
-typedef struct {
- int pos;
- int numentries;
- int mallocsize;
- char *data;
- char *current;
-} Dir;
+bool get_dir_entry(TALLOC_CTX *ctx,
+ struct dptr_struct *dirptr,
+ const char *mask,
+ uint32_t dirtype,
+ char **_fname,
+ SMB_OFF_T *_size,
+ uint32_t *_mode,
+ struct timespec *_date,
+ bool check_descend,
+ bool ask_sharemode)
+{
+ connection_struct *conn = dirptr->conn;
+ char *fname = NULL;
+ struct smb_filename *smb_fname = NULL;
+ uint32_t mode = 0;
+ long prev_offset;
+ bool ok;
+
+ ok = smbd_dirptr_get_entry(ctx,
+ dirptr,
+ mask,
+ dirtype,
+ check_descend,
+ ask_sharemode,
+ smbd_dirptr_8_3_match_fn,
+ smbd_dirptr_8_3_mode_fn,
+ conn,
+ &fname,
+ &smb_fname,
+ &mode,
+ &prev_offset);
+ if (!ok) {
+ return false;
+ }
+
+ *_fname = talloc_move(ctx, &fname);
+ *_size = smb_fname->st.st_ex_size;
+ *_mode = mode;
+ *_date = smb_fname->st.st_ex_mtime;
+ TALLOC_FREE(smb_fname);
+ return true;
+}
/*******************************************************************
Check to see if a user can read a file. This is only approximate,
use it for anything security sensitive.
********************************************************************/
-static BOOL user_can_read_file(connection_struct *conn, char *name, SMB_STRUCT_STAT *pst)
+static bool user_can_read_file(connection_struct *conn,
+ struct smb_filename *smb_fname)
{
- extern struct current_user current_user;
- SEC_DESC *psd = NULL;
- size_t sd_size;
- files_struct *fsp;
- int smb_action;
- NTSTATUS status;
- uint32 access_granted;
-
/*
* If user is a member of the Admin group
* we never hide files from them.
*/
- if (conn->admin_user)
+ if (conn->admin_user) {
return True;
+ }
- /* If we can't stat it does not show it */
- if (!VALID_STAT(*pst) && (SMB_VFS_STAT(conn, name, pst) != 0))
- return False;
-
- /* Pseudo-open the file (note - no fd's created). */
-
- if(S_ISDIR(pst->st_mode))
- fsp = open_directory(conn, name, pst, 0, SET_DENY_MODE(DENY_NONE), (FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_OPEN),
- &smb_action);
- else
- fsp = open_file_stat(conn, name, pst);
-
- if (!fsp)
- return False;
-
- /* Get NT ACL -allocated in main loop talloc context. No free needed here. */
- sd_size = SMB_VFS_FGET_NT_ACL(fsp, fsp->fd,
- (OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION|DACL_SECURITY_INFORMATION), &psd);
- close_file(fsp, True);
-
- /* No access if SD get failed. */
- if (!sd_size)
- return False;
-
- return se_access_check(psd, current_user.nt_user_token, FILE_READ_DATA,
- &access_granted, &status);
+ return can_access_file_acl(conn, smb_fname, FILE_READ_DATA);
}
/*******************************************************************
use it for anything security sensitive.
********************************************************************/
-static BOOL user_can_write_file(connection_struct *conn, char *name, SMB_STRUCT_STAT *pst)
+static bool user_can_write_file(connection_struct *conn,
+ const struct smb_filename *smb_fname)
{
- extern struct current_user current_user;
- SEC_DESC *psd = NULL;
- size_t sd_size;
- files_struct *fsp;
- int smb_action;
- int access_mode;
- NTSTATUS status;
- uint32 access_granted;
-
/*
* If user is a member of the Admin group
* we never hide files from them.
*/
- if (conn->admin_user)
+ if (conn->admin_user) {
return True;
+ }
- /* If we can't stat it does not show it */
- if (!VALID_STAT(*pst) && (SMB_VFS_STAT(conn, name, pst) != 0))
- return False;
+ SMB_ASSERT(VALID_STAT(smb_fname->st));
- /* Pseudo-open the file (note - no fd's created). */
+ /* Pseudo-open the file */
- if(S_ISDIR(pst->st_mode))
+ if(S_ISDIR(smb_fname->st.st_ex_mode)) {
return True;
- else
- fsp = open_file_shared1(conn, name, pst, FILE_WRITE_ATTRIBUTES, SET_DENY_MODE(DENY_NONE),
- (FILE_FAIL_IF_NOT_EXIST|FILE_EXISTS_OPEN), FILE_ATTRIBUTE_NORMAL, INTERNAL_OPEN_ONLY,
- &access_mode, &smb_action);
-
- if (!fsp)
- return False;
-
- /* Get NT ACL -allocated in main loop talloc context. No free needed here. */
- sd_size = SMB_VFS_FGET_NT_ACL(fsp, fsp->fd,
- (OWNER_SECURITY_INFORMATION|GROUP_SECURITY_INFORMATION|DACL_SECURITY_INFORMATION), &psd);
- close_file(fsp, False);
-
- /* No access if SD get failed. */
- if (!sd_size)
- return False;
+ }
- return se_access_check(psd, current_user.nt_user_token, FILE_WRITE_DATA,
- &access_granted, &status);
+ return can_write_to_file(conn, smb_fname);
}
/*******************************************************************
Is a file a "special" type ?
********************************************************************/
-static BOOL file_is_special(connection_struct *conn, char *name, SMB_STRUCT_STAT *pst)
+static bool file_is_special(connection_struct *conn,
+ const struct smb_filename *smb_fname)
{
/*
* If user is a member of the Admin group
if (conn->admin_user)
return False;
- /* If we can't stat it does not show it */
- if (!VALID_STAT(*pst) && (SMB_VFS_STAT(conn, name, pst) != 0))
- return True;
+ SMB_ASSERT(VALID_STAT(smb_fname->st));
- if (S_ISREG(pst->st_mode) || S_ISDIR(pst->st_mode) || S_ISLNK(pst->st_mode))
+ if (S_ISREG(smb_fname->st.st_ex_mode) ||
+ S_ISDIR(smb_fname->st.st_ex_mode) ||
+ S_ISLNK(smb_fname->st.st_ex_mode))
return False;
return True;
}
/*******************************************************************
- Open a directory.
+ Should the file be seen by the client?
+ NOTE: A successful return is no guarantee of the file's existence.
********************************************************************/
-void *OpenDir(connection_struct *conn, const char *name, BOOL use_veto)
+bool is_visible_file(connection_struct *conn, const char *dir_path,
+ const char *name, SMB_STRUCT_STAT *pst, bool use_veto)
{
- Dir *dirp;
- const char *n;
- DIR *p = SMB_VFS_OPENDIR(conn,name);
- int used=0;
+ bool hide_unreadable = lp_hideunreadable(SNUM(conn));
+ bool hide_unwriteable = lp_hideunwriteable_files(SNUM(conn));
+ bool hide_special = lp_hide_special_files(SNUM(conn));
+ char *entry = NULL;
+ struct smb_filename *smb_fname_base = NULL;
+ NTSTATUS status;
+ bool ret = false;
- if (!p)
- return(NULL);
- dirp = SMB_MALLOC_P(Dir);
- if (!dirp) {
- DEBUG(0,("Out of memory in OpenDir\n"));
- SMB_VFS_CLOSEDIR(conn,p);
- return(NULL);
+ if ((strcmp(".",name) == 0) || (strcmp("..",name) == 0)) {
+ return True; /* . and .. are always visible. */
}
- dirp->pos = dirp->numentries = dirp->mallocsize = 0;
- dirp->data = dirp->current = NULL;
-
- while (True) {
- int l;
- BOOL normal_entry = True;
- SMB_STRUCT_STAT st;
- char *entry = NULL;
-
- if (used == 0) {
- n = ".";
- normal_entry = False;
- } else if (used == 2) {
- n = "..";
- normal_entry = False;
- } else {
- n = vfs_readdirname(conn, p);
- if (n == NULL)
- break;
- if ((strcmp(".",n) == 0) ||(strcmp("..",n) == 0))
- continue;
- normal_entry = True;
- }
- ZERO_STRUCT(st);
- l = strlen(n)+1;
-
- /* If it's a vetoed file, pretend it doesn't even exist */
- if (normal_entry && use_veto && conn && IS_VETO_PATH(conn, n))
- continue;
+ /* If it's a vetoed file, pretend it doesn't even exist */
+ if (use_veto && IS_VETO_PATH(conn, name)) {
+ DEBUG(10,("is_visible_file: file %s is vetoed.\n", name ));
+ return False;
+ }
- /* Honour _hide unreadable_ option */
- if (normal_entry && conn && lp_hideunreadable(SNUM(conn))) {
- int ret=0;
-
- if (entry || asprintf(&entry, "%s/%s/%s", conn->origpath, name, n) > 0) {
- ret = user_can_read_file(conn, entry, &st);
- }
- if (!ret) {
- SAFE_FREE(entry);
- continue;
- }
+ if (hide_unreadable || hide_unwriteable || hide_special) {
+ entry = talloc_asprintf(talloc_tos(), "%s/%s", dir_path, name);
+ if (!entry) {
+ ret = false;
+ goto out;
}
- /* Honour _hide unwriteable_ option */
- if (normal_entry && conn && lp_hideunwriteable_files(SNUM(conn))) {
- int ret=0;
-
- if (entry || asprintf(&entry, "%s/%s/%s", conn->origpath, name, n) > 0) {
- ret = user_can_write_file(conn, entry, &st);
- }
- if (!ret) {
- SAFE_FREE(entry);
- continue;
- }
+ /* If it's a dfs symlink, ignore _hide xxxx_ options */
+ if (lp_host_msdfs() &&
+ lp_msdfs_root(SNUM(conn)) &&
+ is_msdfs_link(conn, entry, NULL)) {
+ ret = true;
+ goto out;
}
- /* Honour _hide_special_ option */
- if (normal_entry && conn && lp_hide_special_files(SNUM(conn))) {
- int ret=0;
-
- if (entry || asprintf(&entry, "%s/%s/%s", conn->origpath, name, n) > 0) {
- ret = file_is_special(conn, entry, &st);
- }
- if (ret) {
- SAFE_FREE(entry);
- continue;
- }
+ /* Create an smb_filename with stream_name == NULL. */
+ status = create_synthetic_smb_fname(talloc_tos(), entry, NULL,
+ pst, &smb_fname_base);
+ if (!NT_STATUS_IS_OK(status)) {
+ ret = false;
+ goto out;
}
- SAFE_FREE(entry);
-
- if (used + l > dirp->mallocsize) {
- int s = MAX(used+l,used+2000);
- char *r;
- r = (char *)SMB_REALLOC(dirp->data,s);
- if (!r) {
- DEBUG(0,("Out of memory in OpenDir\n"));
- break;
+ /* If the file name does not exist, there's no point checking
+ * the configuration options. We succeed, on the basis that the
+ * checks *might* have passed if the file was present.
+ */
+ if (!VALID_STAT(*pst)) {
+ if (SMB_VFS_STAT(conn, smb_fname_base) != 0) {
+ ret = true;
+ goto out;
+ } else {
+ *pst = smb_fname_base->st;
}
- dirp->data = r;
- dirp->mallocsize = s;
- dirp->current = dirp->data;
}
- safe_strcpy_base(dirp->data+used,n, dirp->data, dirp->mallocsize);
- used += l;
- dirp->numentries++;
+ /* Honour _hide unreadable_ option */
+ if (hide_unreadable &&
+ !user_can_read_file(conn, smb_fname_base)) {
+ DEBUG(10,("is_visible_file: file %s is unreadable.\n",
+ entry ));
+ ret = false;
+ goto out;
+ }
+ /* Honour _hide unwriteable_ option */
+ if (hide_unwriteable && !user_can_write_file(conn,
+ smb_fname_base)) {
+ DEBUG(10,("is_visible_file: file %s is unwritable.\n",
+ entry ));
+ ret = false;
+ goto out;
+ }
+ /* Honour _hide_special_ option */
+ if (hide_special && file_is_special(conn, smb_fname_base)) {
+ DEBUG(10,("is_visible_file: file %s is special.\n",
+ entry ));
+ ret = false;
+ goto out;
+ }
}
- SMB_VFS_CLOSEDIR(conn,p);
- return((void *)dirp);
+ ret = true;
+ out:
+ TALLOC_FREE(smb_fname_base);
+ TALLOC_FREE(entry);
+ return ret;
}
+static int smb_Dir_destructor(struct smb_Dir *dirp)
+{
+ if (dirp->dir) {
+ SMB_VFS_CLOSEDIR(dirp->conn,dirp->dir);
+ }
+ if (dirp->conn->sconn) {
+ dirp->conn->sconn->smb1.searches.dirhandles_open--;
+ }
+ return 0;
+}
/*******************************************************************
- Close a directory.
+ Open a directory.
********************************************************************/
-void CloseDir(void *p)
+struct smb_Dir *OpenDir(TALLOC_CTX *mem_ctx, connection_struct *conn,
+ const char *name, const char *mask, uint32 attr)
{
- if (!p)
- return;
- SAFE_FREE(((Dir *)p)->data);
- SAFE_FREE(p);
+ struct smb_Dir *dirp = TALLOC_ZERO_P(mem_ctx, struct smb_Dir);
+ struct smbd_server_connection *sconn = conn->sconn;
+
+ if (!dirp) {
+ return NULL;
+ }
+
+ dirp->conn = conn;
+ dirp->name_cache_size = lp_directory_name_cache_size(SNUM(conn));
+
+ dirp->dir_path = talloc_strdup(dirp, name);
+ if (!dirp->dir_path) {
+ errno = ENOMEM;
+ goto fail;
+ }
+
+ if (sconn) {
+ sconn->smb1.searches.dirhandles_open++;
+ }
+ talloc_set_destructor(dirp, smb_Dir_destructor);
+
+ dirp->dir = SMB_VFS_OPENDIR(conn, dirp->dir_path, mask, attr);
+ if (!dirp->dir) {
+ DEBUG(5,("OpenDir: Can't open %s. %s\n", dirp->dir_path,
+ strerror(errno) ));
+ goto fail;
+ }
+
+ return dirp;
+
+ fail:
+ TALLOC_FREE(dirp);
+ return NULL;
}
/*******************************************************************
Read from a directory.
+ Return directory entry, current offset, and optional stat information.
+ Don't check for veto or invisible files.
********************************************************************/
-const char *ReadDirName(void *p)
+char *ReadDirName(struct smb_Dir *dirp, long *poffset,
+ SMB_STRUCT_STAT *sbuf)
{
- char *ret;
- Dir *dirp = (Dir *)p;
+ char *n;
+ connection_struct *conn = dirp->conn;
+
+ /* Cheat to allow . and .. to be the first entries returned. */
+ if (((*poffset == START_OF_DIRECTORY_OFFSET) ||
+ (*poffset == DOT_DOT_DIRECTORY_OFFSET)) && (dirp->file_number < 2))
+ {
+ if (dirp->file_number == 0) {
+ n = talloc_strdup(talloc_tos(), ".");
+ if (n == NULL)
+ return NULL;
+ *poffset = dirp->offset = START_OF_DIRECTORY_OFFSET;
+ } else {
+ *poffset = dirp->offset = DOT_DOT_DIRECTORY_OFFSET;
+ n = talloc_strdup(talloc_tos(), "..");
+ if (n == NULL)
+ return NULL;
+ }
+ dirp->file_number++;
+ return n;
+ } else if (*poffset == END_OF_DIRECTORY_OFFSET) {
+ *poffset = dirp->offset = END_OF_DIRECTORY_OFFSET;
+ return NULL;
+ } else {
+ /* A real offset, seek to it. */
+ SeekDir(dirp, *poffset);
+ }
- if (!dirp || !dirp->current || dirp->pos >= dirp->numentries)
- return(NULL);
+ while ((n = vfs_readdirname(conn, dirp->dir, sbuf))) {
+ /* Ignore . and .. - we've already returned them. */
+ if (*n == '.') {
+ if ((n[1] == '\0') || (n[1] == '.' && n[2] == '\0')) {
+ TALLOC_FREE(n);
+ continue;
+ }
+ }
+ *poffset = dirp->offset = SMB_VFS_TELLDIR(conn, dirp->dir);
+ dirp->file_number++;
+ return n;
+ }
+ *poffset = dirp->offset = END_OF_DIRECTORY_OFFSET;
+ return NULL;
+}
- ret = dirp->current;
- dirp->current = skip_string(dirp->current,1);
- dirp->pos++;
+/*******************************************************************
+ Rewind to the start.
+********************************************************************/
- return(ret);
+void RewindDir(struct smb_Dir *dirp, long *poffset)
+{
+ SMB_VFS_REWINDDIR(dirp->conn, dirp->dir);
+ dirp->file_number = 0;
+ dirp->offset = START_OF_DIRECTORY_OFFSET;
+ *poffset = START_OF_DIRECTORY_OFFSET;
}
/*******************************************************************
Seek a dir.
********************************************************************/
-BOOL SeekDir(void *p,int pos)
+void SeekDir(struct smb_Dir *dirp, long offset)
{
- Dir *dirp = (Dir *)p;
+ if (offset != dirp->offset) {
+ if (offset == START_OF_DIRECTORY_OFFSET) {
+ RewindDir(dirp, &offset);
+ /*
+ * Ok we should really set the file number here
+ * to 1 to enable ".." to be returned next. Trouble
+ * is I'm worried about callers using SeekDir(dirp,0)
+ * as equivalent to RewindDir(). So leave this alone
+ * for now.
+ */
+ } else if (offset == DOT_DOT_DIRECTORY_OFFSET) {
+ RewindDir(dirp, &offset);
+ /*
+ * Set the file number to 2 - we want to get the first
+ * real file entry (the one we return after "..")
+ * on the next ReadDir.
+ */
+ dirp->file_number = 2;
+ } else if (offset == END_OF_DIRECTORY_OFFSET) {
+ ; /* Don't seek in this case. */
+ } else {
+ SMB_VFS_SEEKDIR(dirp->conn, dirp->dir, offset);
+ }
+ dirp->offset = offset;
+ }
+}
- if (!dirp)
- return(False);
+/*******************************************************************
+ Tell a dir position.
+********************************************************************/
+
+long TellDir(struct smb_Dir *dirp)
+{
+ return(dirp->offset);
+}
+
+/*******************************************************************
+ Add an entry into the dcache.
+********************************************************************/
+
+void DirCacheAdd(struct smb_Dir *dirp, const char *name, long offset)
+{
+ struct name_cache_entry *e;
- if (pos < dirp->pos) {
- dirp->current = dirp->data;
- dirp->pos = 0;
+ if (dirp->name_cache_size == 0) {
+ return;
}
- while (dirp->pos < pos && ReadDirName(p))
- ;
+ if (dirp->name_cache == NULL) {
+ dirp->name_cache = TALLOC_ZERO_ARRAY(
+ dirp, struct name_cache_entry, dirp->name_cache_size);
- return (dirp->pos == pos);
+ if (dirp->name_cache == NULL) {
+ return;
+ }
+ }
+
+ dirp->name_cache_index = (dirp->name_cache_index+1) %
+ dirp->name_cache_size;
+ e = &dirp->name_cache[dirp->name_cache_index];
+ TALLOC_FREE(e->name);
+ e->name = talloc_strdup(dirp, name);
+ e->offset = offset;
}
/*******************************************************************
- Tell a dir position.
+ Find an entry by name. Leave us at the offset after it.
+ Don't check for veto or invisible files.
********************************************************************/
-int TellDir(void *p)
+bool SearchDir(struct smb_Dir *dirp, const char *name, long *poffset)
{
- Dir *dirp = (Dir *)p;
+ int i;
+ char *entry = NULL;
+ connection_struct *conn = dirp->conn;
+
+ /* Search back in the name cache. */
+ if (dirp->name_cache_size && dirp->name_cache) {
+ for (i = dirp->name_cache_index; i >= 0; i--) {
+ struct name_cache_entry *e = &dirp->name_cache[i];
+ if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
+ *poffset = e->offset;
+ SeekDir(dirp, e->offset);
+ return True;
+ }
+ }
+ for (i = dirp->name_cache_size - 1; i > dirp->name_cache_index; i--) {
+ struct name_cache_entry *e = &dirp->name_cache[i];
+ if (e->name && (conn->case_sensitive ? (strcmp(e->name, name) == 0) : strequal(e->name, name))) {
+ *poffset = e->offset;
+ SeekDir(dirp, e->offset);
+ return True;
+ }
+ }
+ }
+
+ /* Not found in the name cache. Rewind directory and start from scratch. */
+ SMB_VFS_REWINDDIR(conn, dirp->dir);
+ dirp->file_number = 0;
+ *poffset = START_OF_DIRECTORY_OFFSET;
+ while ((entry = ReadDirName(dirp, poffset, NULL))) {
+ if (conn->case_sensitive ? (strcmp(entry, name) == 0) : strequal(entry, name)) {
+ TALLOC_FREE(entry);
+ return True;
+ }
+ TALLOC_FREE(entry);
+ }
+ return False;
+}
+
+/*****************************************************************
+ Is this directory empty ?
+*****************************************************************/
+
+NTSTATUS can_delete_directory(struct connection_struct *conn,
+ const char *dirname)
+{
+ NTSTATUS status = NT_STATUS_OK;
+ long dirpos = 0;
+ char *dname = NULL;
+ SMB_STRUCT_STAT st;
+ struct smb_Dir *dir_hnd = OpenDir(talloc_tos(), conn, dirname,
+ NULL, 0);
+
+ if (!dir_hnd) {
+ return map_nt_error_from_unix(errno);
+ }
+
+ while ((dname = ReadDirName(dir_hnd, &dirpos, &st))) {
+ /* Quick check for "." and ".." */
+ if (dname[0] == '.') {
+ if (!dname[1] || (dname[1] == '.' && !dname[2])) {
+ TALLOC_FREE(dname);
+ continue;
+ }
+ }
+
+ if (!is_visible_file(conn, dirname, dname, &st, True)) {
+ TALLOC_FREE(dname);
+ continue;
+ }
+
+ DEBUG(10,("can_delete_directory: got name %s - can't delete\n",
+ dname ));
+ status = NT_STATUS_DIRECTORY_NOT_EMPTY;
+ break;
+ }
+ TALLOC_FREE(dname);
+ TALLOC_FREE(dir_hnd);
- if (!dirp)
- return(-1);
-
- return(dirp->pos);
+ return status;
}