NTSTATUS unix_convert(connection_struct *conn,
pstring name,
BOOL allow_wcard_last_component,
char *saved_last_component,
SMB_STRUCT_STAT *pst)
{
SMB_STRUCT_STAT st;
char *start, *end;
pstring dirpath;
pstring orig_path;
BOOL component_was_mangled = False;
BOOL name_has_wildcard = False;
SET_STAT_INVALID(*pst);
*dirpath = 0;
if(saved_last_component) {
*saved_last_component = 0;
}
if (conn->printer) {
/* we don't ever use the filenames on a printer share as a
filename - so don't convert them */
return NT_STATUS_OK;
}
DEBUG(5, ("unix_convert called on file \"%s\"\n", name));
/*
* Conversion to basic unix format is already done in check_path_syntax().
*/
/*
* Names must be relative to the root of the service - any leading /.
* and trailing /'s should have been trimmed by check_path_syntax().
*/
#ifdef DEVELOPER
SMB_ASSERT(*name != '/');
#endif
/*
* If we trimmed down to a single '\0' character
* then we should use the "." directory to avoid
* searching the cache, but not if we are in a
* printing share.
* As we know this is valid we can return true here.
*/
if (!*name) {
name[0] = '.';
name[1] = '\0';
if (SMB_VFS_STAT(conn,name,&st) == 0) {
*pst = st;
}
DEBUG(5,("conversion finished \"\" -> %s\n",name));
return NT_STATUS_OK;
}
if (name[0] == '.' && (name[1] == '/' || name[1] == '\0')) {
/* Start of pathname can't be "." only. */
if (name[1] == '\0' || name[2] == '\0') {
return NT_STATUS_OBJECT_NAME_INVALID;
} else {
return determine_path_error(&name[2], allow_wcard_last_component);
}
}
/*
* Ensure saved_last_component is valid even if file exists.
*/
if(saved_last_component) {
end = strrchr_m(name, '/');
if (end) {
pstrcpy(saved_last_component, end + 1);
} else {
pstrcpy(saved_last_component, name);
}
}
/*
* Large directory fix normalization. If we're case sensitive, and
* the case preserving parameters are set to "no", normalize the case of
* the incoming filename from the client WHETHER IT EXISTS OR NOT !
* This is in conflict with the current (3.0.20) man page, but is
* what people expect from the "large directory howto". I'll update
* the man page. Thanks to [email protected] for finding this. JRA.
*/
if (conn->case_sensitive && !conn->case_preserve && !conn->short_case_preserve) {
strnorm(name, lp_defaultcase(SNUM(conn)));
}
start = name;
pstrcpy(orig_path, name);
if(!conn->case_sensitive && stat_cache_lookup(conn, name, dirpath, &start, &st)) {
*pst = st;
return NT_STATUS_OK;
}
/*
* stat the name - if it exists then we are all done!
*/
if (SMB_VFS_STAT(conn,name,&st) == 0) {
/* Ensure we catch all names with in "/."
this is disallowed under Windows. */
const char *p = strstr(name, "/."); /* mb safe. */
if (p) {
if (p[2] == '/') {
/* Error code within a pathname. */
return NT_STATUS_OBJECT_PATH_NOT_FOUND;
} else if (p[2] == '\0') {
/* Error code at the end of a pathname. */
return NT_STATUS_OBJECT_NAME_INVALID;
}
}
/*
* This is a case insensitive file system, we really need to
* get the correct case of the name.
*/
if (!(conn->fs_capabilities & FILE_CASE_SENSITIVE_SEARCH)) {
pstring case_preserved_name;
if (SMB_VFS_GET_PRESERVED_NAME(conn, name, case_preserved_name)) {
char * last_component = strrchr(name, '/');
int space_left = PSTRING_LEN;
if (last_component) {
last_component++;
*last_component = 0;
space_left = PSTRING_LEN - strlen(name);
} else
last_component = name;
strlcpy(last_component, case_preserved_name, space_left);
}
}
stat_cache_add(orig_path, name, conn->case_sensitive);
DEBUG(5,("conversion finished %s -> %s\n",orig_path, name));
*pst = st;
return NT_STATUS_OK;
}
DEBUG(5,("unix_convert begin: name = %s, dirpath = %s, start = %s\n", name, dirpath, start));
/*
* A special case - if we don't have any mangling chars and are case
* sensitive then searching won't help.
*/
if (conn->case_sensitive &&
!mangle_is_mangled(name, conn->params) &&
!*lp_mangled_map(conn->params)) {
return NT_STATUS_OK;
}
/*
* is_mangled() was changed to look at an entire pathname, not
* just a component. JRA.
*/
if (mangle_is_mangled(start, conn->params)) {
component_was_mangled = True;
}
/*
* Now we need to recursively match the name against the real
* directory structure.
*/
/*
* Match each part of the path name separately, trying the names
* as is first, then trying to scan the directory for matching names.
*/
for (; start ; start = (end?end+1:(char *)NULL)) {
/*
* Pinpoint the end of this section of the filename.
*/
end = strchr(start, '/'); /* mb safe. '/' can't be in any encoded char. */
/*
* Chop the name at this point.
*/
if (end) {
*end = 0;
}
if (saved_last_component != 0) {
pstrcpy(saved_last_component, end ? end + 1 : start);
}
/* The name cannot have a component of "." */
if (ISDOT(start)) {
if (!end) {
/* Error code at the end of a pathname. */
return NT_STATUS_OBJECT_NAME_INVALID;
}
return determine_path_error(end+1, allow_wcard_last_component);
}
/* The name cannot have a wildcard if it's not
the last component. */
name_has_wildcard = ms_has_wild(start);
/* Wildcard not valid anywhere. */
if (name_has_wildcard && !allow_wcard_last_component) {
return NT_STATUS_OBJECT_NAME_INVALID;
}
/* Wildcards never valid within a pathname. */
if (name_has_wildcard && end) {
return NT_STATUS_OBJECT_NAME_INVALID;
}
/*
* Check if the name exists up to this point.
*/
if (SMB_VFS_STAT(conn,name, &st) == 0) {
/*
* It exists. it must either be a directory or this must be
* the last part of the path for it to be OK.
*/
if (end && !(st.st_mode & S_IFDIR)) {
/*
* An intermediate part of the name isn't a directory.
*/
DEBUG(5,("Not a dir %s\n",start));
*end = '/';
/*
* We need to return the fact that the intermediate
* name resolution failed. This is used to return an
* error of ERRbadpath rather than ERRbadfile. Some
* Windows applications depend on the difference between
* these two errors.
*/
return NT_STATUS_OBJECT_PATH_NOT_FOUND;
}
if (!end) {
/*
* We just scanned for, and found the end of the path.
* We must return the valid stat struct.
* JRA.
*/
*pst = st;
}
} else {
pstring rest;
/* Stat failed - ensure we don't use it. */
SET_STAT_INVALID(st);
*rest = 0;
/*
* Remember the rest of the pathname so it can be restored
* later.
*/
if (end) {
pstrcpy(rest,end+1);
}
/* Reset errno so we can detect directory open errors. */
errno = 0;
/*
* Try to find this part of the path in the directory.
*/
if (name_has_wildcard ||
!scan_directory(conn, dirpath, start, sizeof(pstring) - 1 - (start - name))) {
if (end) {
/*
* An intermediate part of the name can't be found.
*/
DEBUG(5,("Intermediate not found %s\n",start));
*end = '/';
/*
* We need to return the fact that the intermediate
* name resolution failed. This is used to return an
* error of ERRbadpath rather than ERRbadfile. Some
* Windows applications depend on the difference between
* these two errors.
*/
/* ENOENT, ENOTDIR and ELOOP all map to
* NT_STATUS_OBJECT_PATH_NOT_FOUND
* in the filename walk. */
if (errno == ENOENT ||
errno == ENOTDIR ||
errno == ELOOP) {
return NT_STATUS_OBJECT_PATH_NOT_FOUND;
}
return map_nt_error_from_unix(errno);
}
/* ENOENT is the only valid error here. */
if (errno != ENOENT) {
/* ENOTDIR and ELOOP both map to
* NT_STATUS_OBJECT_PATH_NOT_FOUND
* in the filename walk. */
if (errno == ENOTDIR ||
errno == ELOOP) {
return NT_STATUS_OBJECT_PATH_NOT_FOUND;
}
return map_nt_error_from_unix(errno);
}
/*
* Just the last part of the name doesn't exist.
* We need to strupper() or strlower() it as
* this conversion may be used for file creation
* purposes. Fix inspired by Thomas Neumann <*****@*****.**>.
*/
if (!conn->case_preserve ||
(mangle_is_8_3(start, False, conn->params) &&
!conn->short_case_preserve)) {
strnorm(start, lp_defaultcase(SNUM(conn)));
}
/*
* check on the mangled stack to see if we can recover the
* base of the filename.
*/
if (mangle_is_mangled(start, conn->params)) {
mangle_check_cache( start, sizeof(pstring) - 1 - (start - name), conn->params);
}
DEBUG(5,("New file %s\n",start));
return NT_STATUS_OK;
}
/*
* Restore the rest of the string. If the string was mangled the size
* may have changed.
*/
if (end) {
end = start + strlen(start);
if (!safe_strcat(start, "/", sizeof(pstring) - 1 - (start - name)) ||
!safe_strcat(start, rest, sizeof(pstring) - 1 - (start - name))) {
return map_nt_error_from_unix(ENAMETOOLONG);
}
*end = '\0';
} else {
/*
* We just scanned for, and found the end of the path.
* We must return a valid stat struct if it exists.
* JRA.
*/
if (SMB_VFS_STAT(conn,name, &st) == 0) {
*pst = st;
} else {
SET_STAT_INVALID(st);
}
}
} /* end else */
#ifdef DEVELOPER
if (VALID_STAT(st) && get_delete_on_close_flag(st.st_dev, st.st_ino)) {
return NT_STATUS_DELETE_PENDING;
}
#endif
/*
* Add to the dirpath that we have resolved so far.
*/
if (*dirpath) {
pstrcat(dirpath,"/");
}
pstrcat(dirpath,start);
/*
* Don't cache a name with mangled or wildcard components
* as this can change the size.
*/
if(!component_was_mangled && !name_has_wildcard) {
stat_cache_add(orig_path, dirpath, conn->case_sensitive);
}
/*
* Restore the / that we wiped out earlier.
*/
if (end) {
*end = '/';
}
}
/*
* Don't cache a name with mangled or wildcard components
* as this can change the size.
*/
if(!component_was_mangled && !name_has_wildcard) {
stat_cache_add(orig_path, name, conn->case_sensitive);
}
/*
* The name has been resolved.
*/
DEBUG(5,("conversion finished %s -> %s\n",orig_path, name));
return NT_STATUS_OK;
}
NTSTATUS unix_convert(TALLOC_CTX *ctx,
connection_struct *conn,
const char *orig_path,
struct smb_filename **smb_fname_out,
uint32_t ucf_flags)
{
struct smb_filename *smb_fname = NULL;
char *start, *end;
char *dirpath = NULL;
char *stream = NULL;
bool component_was_mangled = False;
bool name_has_wildcard = False;
bool posix_pathnames = false;
bool allow_wcard_last_component =
(ucf_flags & UCF_ALWAYS_ALLOW_WCARD_LCOMP);
bool save_last_component = ucf_flags & UCF_SAVE_LCOMP;
NTSTATUS status;
int ret = -1;
*smb_fname_out = NULL;
smb_fname = talloc_zero(ctx, struct smb_filename);
if (smb_fname == NULL) {
return NT_STATUS_NO_MEMORY;
}
if (conn->printer) {
/* we don't ever use the filenames on a printer share as a
filename - so don't convert them */
if (!(smb_fname->base_name = talloc_strdup(smb_fname,
orig_path))) {
status = NT_STATUS_NO_MEMORY;
goto err;
}
goto done;
}
DEBUG(5, ("unix_convert called on file \"%s\"\n", orig_path));
/*
* Conversion to basic unix format is already done in
* check_path_syntax().
*/
/*
* Names must be relative to the root of the service - any leading /.
* and trailing /'s should have been trimmed by check_path_syntax().
*/
#ifdef DEVELOPER
SMB_ASSERT(*orig_path != '/');
#endif
/*
* If we trimmed down to a single '\0' character
* then we should use the "." directory to avoid
* searching the cache, but not if we are in a
* printing share.
* As we know this is valid we can return true here.
*/
if (!*orig_path) {
if (!(smb_fname->base_name = talloc_strdup(smb_fname, "."))) {
status = NT_STATUS_NO_MEMORY;
goto err;
}
if (SMB_VFS_STAT(conn, smb_fname) != 0) {
status = map_nt_error_from_unix(errno);
goto err;
}
DEBUG(5, ("conversion finished \"\" -> %s\n",
smb_fname->base_name));
goto done;
}
if (orig_path[0] == '.' && (orig_path[1] == '/' ||
orig_path[1] == '\0')) {
/* Start of pathname can't be "." only. */
if (orig_path[1] == '\0' || orig_path[2] == '\0') {
status = NT_STATUS_OBJECT_NAME_INVALID;
} else {
status =determine_path_error(&orig_path[2],
allow_wcard_last_component);
}
goto err;
}
/* Start with the full orig_path as given by the caller. */
if (!(smb_fname->base_name = talloc_strdup(smb_fname, orig_path))) {
DEBUG(0, ("talloc_strdup failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
/*
* Large directory fix normalization. If we're case sensitive, and
* the case preserving parameters are set to "no", normalize the case of
* the incoming filename from the client WHETHER IT EXISTS OR NOT !
* This is in conflict with the current (3.0.20) man page, but is
* what people expect from the "large directory howto". I'll update
* the man page. Thanks to [email protected] for finding this. JRA.
*/
if (conn->case_sensitive && !conn->case_preserve &&
!conn->short_case_preserve) {
strnorm(smb_fname->base_name, lp_defaultcase(SNUM(conn)));
}
/*
* Ensure saved_last_component is valid even if file exists.
*/
if(save_last_component) {
end = strrchr_m(smb_fname->base_name, '/');
if (end) {
smb_fname->original_lcomp = talloc_strdup(smb_fname,
end + 1);
} else {
smb_fname->original_lcomp =
talloc_strdup(smb_fname, smb_fname->base_name);
}
if (smb_fname->original_lcomp == NULL) {
status = NT_STATUS_NO_MEMORY;
goto err;
}
}
posix_pathnames = (lp_posix_pathnames() ||
(ucf_flags & UCF_POSIX_PATHNAMES));
/*
* Strip off the stream, and add it back when we're done with the
* base_name.
*/
if (!posix_pathnames) {
stream = strchr_m(smb_fname->base_name, ':');
if (stream != NULL) {
char *tmp = talloc_strdup(smb_fname, stream);
if (tmp == NULL) {
status = NT_STATUS_NO_MEMORY;
goto err;
}
/*
* Since this is actually pointing into
* smb_fname->base_name this truncates base_name.
*/
*stream = '\0';
stream = tmp;
}
}
start = smb_fname->base_name;
/*
* If we're providing case insensitive semantics or
* the underlying filesystem is case insensitive,
* then a case-normalized hit in the stat-cache is
* authoratitive. JRA.
*
* Note: We're only checking base_name. The stream_name will be
* added and verified in build_stream_path().
*/
if((!conn->case_sensitive || !(conn->fs_capabilities &
FILE_CASE_SENSITIVE_SEARCH)) &&
stat_cache_lookup(conn, posix_pathnames, &smb_fname->base_name, &dirpath, &start,
&smb_fname->st)) {
goto done;
}
/*
* Make sure "dirpath" is an allocated string, we use this for
* building the directories with talloc_asprintf and free it.
*/
if ((dirpath == NULL) && (!(dirpath = talloc_strdup(ctx,"")))) {
DEBUG(0, ("talloc_strdup failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
/*
* If we have a wildcard we must walk the path to
* find where the error is, even if case sensitive
* is true.
*/
name_has_wildcard = ms_has_wild(smb_fname->base_name);
if (name_has_wildcard && !allow_wcard_last_component) {
/* Wildcard not valid anywhere. */
status = NT_STATUS_OBJECT_NAME_INVALID;
goto fail;
}
DEBUG(5,("unix_convert begin: name = %s, dirpath = %s, start = %s\n",
smb_fname->base_name, dirpath, start));
if (!name_has_wildcard) {
/*
* stat the name - if it exists then we can add the stream back (if
* there was one) and be done!
*/
if (posix_pathnames) {
ret = SMB_VFS_LSTAT(conn, smb_fname);
} else {
ret = SMB_VFS_STAT(conn, smb_fname);
}
if (ret == 0) {
status = check_for_dot_component(smb_fname);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
/* Add the path (not including the stream) to the cache. */
stat_cache_add(orig_path, smb_fname->base_name,
conn->case_sensitive);
DEBUG(5,("conversion of base_name finished %s -> %s\n",
orig_path, smb_fname->base_name));
goto done;
}
/* Stat failed - ensure we don't use it. */
SET_STAT_INVALID(smb_fname->st);
if (errno == ENOENT) {
/* Optimization when creating a new file - only
the last component doesn't exist. */
status = check_parent_exists(ctx,
conn,
posix_pathnames,
smb_fname,
&dirpath,
&start);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
}
/*
* A special case - if we don't have any wildcards or mangling chars and are case
* sensitive or the underlying filesystem is case insensitive then searching
* won't help.
*/
if ((conn->case_sensitive || !(conn->fs_capabilities &
FILE_CASE_SENSITIVE_SEARCH)) &&
!mangle_is_mangled(smb_fname->base_name, conn->params)) {
status = check_for_dot_component(smb_fname);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
/*
* The stat failed. Could be ok as it could be
* a new file.
*/
if (errno == ENOTDIR || errno == ELOOP) {
status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
goto fail;
} else if (errno == ENOENT) {
/*
* Was it a missing last component ?
* or a missing intermediate component ?
*/
struct smb_filename parent_fname;
const char *last_component = NULL;
ZERO_STRUCT(parent_fname);
if (!parent_dirname(ctx, smb_fname->base_name,
&parent_fname.base_name,
&last_component)) {
status = NT_STATUS_NO_MEMORY;
goto fail;
}
if (posix_pathnames) {
ret = SMB_VFS_LSTAT(conn, &parent_fname);
} else {
ret = SMB_VFS_STAT(conn, &parent_fname);
}
if (ret == -1) {
if (errno == ENOTDIR ||
errno == ENOENT ||
errno == ELOOP) {
status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
goto fail;
}
}
/*
* Missing last component is ok - new file.
* Also deal with permission denied elsewhere.
* Just drop out to done.
*/
goto done;
}
}
} else {
/*
* We have a wildcard in the pathname.
*
* Optimization for common case where the wildcard
* is in the last component and the client already
* sent the correct case.
*/
status = check_parent_exists(ctx,
conn,
posix_pathnames,
smb_fname,
&dirpath,
&start);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
}
/*
* is_mangled() was changed to look at an entire pathname, not
* just a component. JRA.
*/
if (mangle_is_mangled(start, conn->params)) {
component_was_mangled = True;
}
/*
* Now we need to recursively match the name against the real
* directory structure.
*/
/*
* Match each part of the path name separately, trying the names
* as is first, then trying to scan the directory for matching names.
*/
for (; start ; start = (end?end+1:(char *)NULL)) {
/*
* Pinpoint the end of this section of the filename.
*/
/* mb safe. '/' can't be in any encoded char. */
end = strchr(start, '/');
/*
* Chop the name at this point.
*/
if (end) {
*end = 0;
}
if (save_last_component) {
TALLOC_FREE(smb_fname->original_lcomp);
smb_fname->original_lcomp = talloc_strdup(smb_fname,
end ? end + 1 : start);
if (!smb_fname->original_lcomp) {
DEBUG(0, ("talloc failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
}
/* The name cannot have a component of "." */
if (ISDOT(start)) {
if (!end) {
/* Error code at the end of a pathname. */
status = NT_STATUS_OBJECT_NAME_INVALID;
} else {
status = determine_path_error(end+1,
allow_wcard_last_component);
}
goto fail;
}
/* The name cannot have a wildcard if it's not
the last component. */
name_has_wildcard = ms_has_wild(start);
/* Wildcards never valid within a pathname. */
if (name_has_wildcard && end) {
status = NT_STATUS_OBJECT_NAME_INVALID;
goto fail;
}
/* Skip the stat call if it's a wildcard end. */
if (name_has_wildcard) {
DEBUG(5,("Wildcard %s\n",start));
goto done;
}
/*
* Check if the name exists up to this point.
*/
if (posix_pathnames) {
ret = SMB_VFS_LSTAT(conn, smb_fname);
} else {
ret = SMB_VFS_STAT(conn, smb_fname);
}
if (ret == 0) {
/*
* It exists. it must either be a directory or this must
* be the last part of the path for it to be OK.
*/
if (end && !S_ISDIR(smb_fname->st.st_ex_mode)) {
/*
* An intermediate part of the name isn't
* a directory.
*/
DEBUG(5,("Not a dir %s\n",start));
*end = '/';
/*
* We need to return the fact that the
* intermediate name resolution failed. This
* is used to return an error of ERRbadpath
* rather than ERRbadfile. Some Windows
* applications depend on the difference between
* these two errors.
*/
status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
goto fail;
}
} else {
char *found_name = NULL;
/* Stat failed - ensure we don't use it. */
SET_STAT_INVALID(smb_fname->st);
/*
* Reset errno so we can detect
* directory open errors.
*/
errno = 0;
/*
* Try to find this part of the path in the directory.
*/
if (name_has_wildcard ||
(get_real_filename(conn, dirpath, start,
talloc_tos(),
&found_name) == -1)) {
char *unmangled;
if (end) {
/*
* An intermediate part of the name
* can't be found.
*/
DEBUG(5,("Intermediate not found %s\n",
start));
*end = '/';
/*
* We need to return the fact that the
* intermediate name resolution failed.
* This is used to return an error of
* ERRbadpath rather than ERRbadfile.
* Some Windows applications depend on
* the difference between these two
* errors.
*/
/*
* ENOENT, ENOTDIR and ELOOP all map
* to NT_STATUS_OBJECT_PATH_NOT_FOUND
* in the filename walk.
*/
if (errno == ENOENT ||
errno == ENOTDIR ||
errno == ELOOP) {
status =
NT_STATUS_OBJECT_PATH_NOT_FOUND;
}
else {
status =
map_nt_error_from_unix(errno);
}
goto fail;
}
/*
* ENOENT/EACCESS are the only valid errors
* here. EACCESS needs handling here for
* "dropboxes", i.e. directories where users
* can only put stuff with permission -wx.
*/
if ((errno != 0) && (errno != ENOENT)
&& (errno != EACCES)) {
/*
* ENOTDIR and ELOOP both map to
* NT_STATUS_OBJECT_PATH_NOT_FOUND
* in the filename walk.
*/
if (errno == ENOTDIR ||
errno == ELOOP) {
status =
NT_STATUS_OBJECT_PATH_NOT_FOUND;
} else {
status =
map_nt_error_from_unix(errno);
}
goto fail;
}
/*
* Just the last part of the name doesn't exist.
* We need to strupper() or strlower() it as
* this conversion may be used for file creation
* purposes. Fix inspired by
* Thomas Neumann <*****@*****.**>.
*/
if (!conn->case_preserve ||
(mangle_is_8_3(start, False,
conn->params) &&
!conn->short_case_preserve)) {
strnorm(start,
lp_defaultcase(SNUM(conn)));
}
/*
* check on the mangled stack to see if we can
* recover the base of the filename.
*/
if (mangle_is_mangled(start, conn->params)
&& mangle_lookup_name_from_8_3(ctx,
start,
&unmangled,
conn->params)) {
char *tmp;
size_t start_ofs =
start - smb_fname->base_name;
if (*dirpath != '\0') {
tmp = talloc_asprintf(
smb_fname, "%s/%s",
dirpath, unmangled);
TALLOC_FREE(unmangled);
}
else {
tmp = unmangled;
}
if (tmp == NULL) {
DEBUG(0, ("talloc failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
TALLOC_FREE(smb_fname->base_name);
smb_fname->base_name = tmp;
start =
smb_fname->base_name + start_ofs;
end = start + strlen(start);
}
DEBUG(5,("New file %s\n",start));
goto done;
}
/*
* Restore the rest of the string. If the string was
* mangled the size may have changed.
*/
if (end) {
char *tmp;
size_t start_ofs =
start - smb_fname->base_name;
if (*dirpath != '\0') {
tmp = talloc_asprintf(smb_fname,
"%s/%s/%s", dirpath,
found_name, end+1);
}
else {
tmp = talloc_asprintf(smb_fname,
"%s/%s", found_name,
end+1);
}
if (tmp == NULL) {
DEBUG(0, ("talloc_asprintf failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
TALLOC_FREE(smb_fname->base_name);
smb_fname->base_name = tmp;
start = smb_fname->base_name + start_ofs;
end = start + strlen(found_name);
*end = '\0';
} else {
char *tmp;
size_t start_ofs =
start - smb_fname->base_name;
if (*dirpath != '\0') {
tmp = talloc_asprintf(smb_fname,
"%s/%s", dirpath,
found_name);
} else {
tmp = talloc_strdup(smb_fname,
found_name);
}
if (tmp == NULL) {
DEBUG(0, ("talloc failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
TALLOC_FREE(smb_fname->base_name);
smb_fname->base_name = tmp;
start = smb_fname->base_name + start_ofs;
/*
* We just scanned for, and found the end of
* the path. We must return a valid stat struct
* if it exists. JRA.
*/
if (posix_pathnames) {
ret = SMB_VFS_LSTAT(conn, smb_fname);
} else {
ret = SMB_VFS_STAT(conn, smb_fname);
}
if (ret != 0) {
SET_STAT_INVALID(smb_fname->st);
}
}
TALLOC_FREE(found_name);
} /* end else */
#ifdef DEVELOPER
/*
* This sucks!
* We should never provide different behaviors
* depending on DEVELOPER!!!
*/
if (VALID_STAT(smb_fname->st)) {
bool delete_pending;
uint32_t name_hash;
status = file_name_hash(conn,
smb_fname_str_dbg(smb_fname),
&name_hash);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
get_file_infos(vfs_file_id_from_sbuf(conn,
&smb_fname->st),
name_hash,
&delete_pending, NULL);
if (delete_pending) {
status = NT_STATUS_DELETE_PENDING;
goto fail;
}
}
#endif
/*
* Add to the dirpath that we have resolved so far.
*/
if (*dirpath != '\0') {
char *tmp = talloc_asprintf(ctx,
"%s/%s", dirpath, start);
if (!tmp) {
DEBUG(0, ("talloc_asprintf failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
TALLOC_FREE(dirpath);
dirpath = tmp;
}
else {
TALLOC_FREE(dirpath);
if (!(dirpath = talloc_strdup(ctx,start))) {
DEBUG(0, ("talloc_strdup failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
}
/*
* Cache the dirpath thus far. Don't cache a name with mangled
* or wildcard components as this can change the size.
*/
if(!component_was_mangled && !name_has_wildcard) {
stat_cache_add(orig_path, dirpath,
conn->case_sensitive);
}
/*
* Restore the / that we wiped out earlier.
*/
if (end) {
*end = '/';
}
}
/*
* Cache the full path. Don't cache a name with mangled or wildcard
* components as this can change the size.
*/
if(!component_was_mangled && !name_has_wildcard) {
stat_cache_add(orig_path, smb_fname->base_name,
conn->case_sensitive);
}
/*
* The name has been resolved.
*/
DEBUG(5,("conversion finished %s -> %s\n", orig_path,
smb_fname->base_name));
done:
/* Add back the stream if one was stripped off originally. */
if (stream != NULL) {
smb_fname->stream_name = stream;
/* Check path now that the base_name has been converted. */
status = build_stream_path(ctx, conn, orig_path, smb_fname);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
}
TALLOC_FREE(dirpath);
*smb_fname_out = smb_fname;
return NT_STATUS_OK;
fail:
DEBUG(10, ("dirpath = [%s] start = [%s]\n", dirpath, start));
if (*dirpath != '\0') {
smb_fname->base_name = talloc_asprintf(smb_fname, "%s/%s",
dirpath, start);
} else {
smb_fname->base_name = talloc_strdup(smb_fname, start);
}
if (!smb_fname->base_name) {
DEBUG(0, ("talloc_asprintf failed\n"));
status = NT_STATUS_NO_MEMORY;
goto err;
}
*smb_fname_out = smb_fname;
TALLOC_FREE(dirpath);
return status;
err:
TALLOC_FREE(smb_fname);
return status;
}
NTSTATUS unix_convert(TALLOC_CTX *ctx,
connection_struct *conn,
const char *orig_path,
bool allow_wcard_last_component,
char **pp_conv_path,
char **pp_saved_last_component,
SMB_STRUCT_STAT *pst)
{
SMB_STRUCT_STAT st;
char *start, *end;
char *dirpath = NULL;
char *name = NULL;
char *stream = NULL;
bool component_was_mangled = False;
bool name_has_wildcard = False;
bool posix_pathnames = false;
NTSTATUS result;
int ret = -1;
SET_STAT_INVALID(*pst);
*pp_conv_path = NULL;
if(pp_saved_last_component) {
*pp_saved_last_component = NULL;
}
if (conn->printer) {
/* we don't ever use the filenames on a printer share as a
filename - so don't convert them */
if (!(*pp_conv_path = talloc_strdup(ctx,orig_path))) {
return NT_STATUS_NO_MEMORY;
}
return NT_STATUS_OK;
}
DEBUG(5, ("unix_convert called on file \"%s\"\n", orig_path));
/*
* Conversion to basic unix format is already done in
* check_path_syntax().
*/
/*
* Names must be relative to the root of the service - any leading /.
* and trailing /'s should have been trimmed by check_path_syntax().
*/
#ifdef DEVELOPER
SMB_ASSERT(*orig_path != '/');
#endif
/*
* If we trimmed down to a single '\0' character
* then we should use the "." directory to avoid
* searching the cache, but not if we are in a
* printing share.
* As we know this is valid we can return true here.
*/
if (!*orig_path) {
if (!(name = talloc_strdup(ctx,"."))) {
return NT_STATUS_NO_MEMORY;
}
if (SMB_VFS_STAT(conn,name,&st) == 0) {
*pst = st;
} else {
return map_nt_error_from_unix(errno);
}
DEBUG(5,("conversion finished \"\" -> %s\n",name));
goto done;
}
if (orig_path[0] == '.' && (orig_path[1] == '/' ||
orig_path[1] == '\0')) {
/* Start of pathname can't be "." only. */
if (orig_path[1] == '\0' || orig_path[2] == '\0') {
result = NT_STATUS_OBJECT_NAME_INVALID;
} else {
result =determine_path_error(
&orig_path[2], allow_wcard_last_component);
}
return result;
}
if (!(name = talloc_strdup(ctx, orig_path))) {
DEBUG(0, ("talloc_strdup failed\n"));
return NT_STATUS_NO_MEMORY;
}
/*
* Large directory fix normalization. If we're case sensitive, and
* the case preserving parameters are set to "no", normalize the case of
* the incoming filename from the client WHETHER IT EXISTS OR NOT !
* This is in conflict with the current (3.0.20) man page, but is
* what people expect from the "large directory howto". I'll update
* the man page. Thanks to [email protected] for finding this. JRA.
*/
if (conn->case_sensitive && !conn->case_preserve &&
!conn->short_case_preserve) {
strnorm(name, lp_defaultcase(SNUM(conn)));
}
/*
* Ensure saved_last_component is valid even if file exists.
*/
if(pp_saved_last_component) {
end = strrchr_m(name, '/');
if (end) {
*pp_saved_last_component = talloc_strdup(ctx, end + 1);
} else {
*pp_saved_last_component = talloc_strdup(ctx,
name);
}
}
posix_pathnames = lp_posix_pathnames();
if (!posix_pathnames) {
stream = strchr_m(name, ':');
if (stream != NULL) {
char *tmp = talloc_strdup(ctx, stream);
if (tmp == NULL) {
TALLOC_FREE(name);
return NT_STATUS_NO_MEMORY;
}
*stream = '\0';
stream = tmp;
}
}
start = name;
/* If we're providing case insentive semantics or
* the underlying filesystem is case insensitive,
* then a case-normalized hit in the stat-cache is
* authoratitive. JRA.
*/
if((!conn->case_sensitive || !(conn->fs_capabilities & FILE_CASE_SENSITIVE_SEARCH)) &&
stat_cache_lookup(conn, &name, &dirpath, &start, &st)) {
*pst = st;
goto done;
}
/*
* Make sure "dirpath" is an allocated string, we use this for
* building the directories with asprintf and free it.
*/
if ((dirpath == NULL) && (!(dirpath = talloc_strdup(ctx,"")))) {
DEBUG(0, ("talloc_strdup failed\n"));
TALLOC_FREE(name);
return NT_STATUS_NO_MEMORY;
}
/*
* stat the name - if it exists then we are all done!
*/
if (posix_pathnames) {
ret = SMB_VFS_LSTAT(conn,name,&st);
} else {
ret = SMB_VFS_STAT(conn,name,&st);
}
if (ret == 0) {
/* Ensure we catch all names with in "/."
this is disallowed under Windows. */
const char *p = strstr(name, "/."); /* mb safe. */
if (p) {
if (p[2] == '/') {
/* Error code within a pathname. */
result = NT_STATUS_OBJECT_PATH_NOT_FOUND;
goto fail;
} else if (p[2] == '\0') {
/* Error code at the end of a pathname. */
result = NT_STATUS_OBJECT_NAME_INVALID;
goto fail;
}
}
stat_cache_add(orig_path, name, conn->case_sensitive);
DEBUG(5,("conversion finished %s -> %s\n",orig_path, name));
*pst = st;
goto done;
}
DEBUG(5,("unix_convert begin: name = %s, dirpath = %s, start = %s\n",
name, dirpath, start));
/*
* A special case - if we don't have any mangling chars and are case
* sensitive or the underlying filesystem is case insentive then searching
* won't help.
*/
if ((conn->case_sensitive || !(conn->fs_capabilities & FILE_CASE_SENSITIVE_SEARCH)) &&
!mangle_is_mangled(name, conn->params)) {
goto done;
}
/*
* is_mangled() was changed to look at an entire pathname, not
* just a component. JRA.
*/
if (mangle_is_mangled(start, conn->params)) {
component_was_mangled = True;
}
/*
* Now we need to recursively match the name against the real
* directory structure.
*/
/*
* Match each part of the path name separately, trying the names
* as is first, then trying to scan the directory for matching names.
*/
for (; start ; start = (end?end+1:(char *)NULL)) {
/*
* Pinpoint the end of this section of the filename.
*/
/* mb safe. '/' can't be in any encoded char. */
end = strchr(start, '/');
/*
* Chop the name at this point.
*/
if (end) {
*end = 0;
}
if (pp_saved_last_component) {
TALLOC_FREE(*pp_saved_last_component);
*pp_saved_last_component = talloc_strdup(ctx,
end ? end + 1 : start);
if (!*pp_saved_last_component) {
DEBUG(0, ("talloc failed\n"));
return NT_STATUS_NO_MEMORY;
}
}
/* The name cannot have a component of "." */
if (ISDOT(start)) {
if (!end) {
/* Error code at the end of a pathname. */
result = NT_STATUS_OBJECT_NAME_INVALID;
} else {
result = determine_path_error(end+1,
allow_wcard_last_component);
}
goto fail;
}
/* The name cannot have a wildcard if it's not
the last component. */
name_has_wildcard = ms_has_wild(start);
/* Wildcard not valid anywhere. */
if (name_has_wildcard && !allow_wcard_last_component) {
result = NT_STATUS_OBJECT_NAME_INVALID;
goto fail;
}
/* Wildcards never valid within a pathname. */
if (name_has_wildcard && end) {
result = NT_STATUS_OBJECT_NAME_INVALID;
goto fail;
}
/*
* Check if the name exists up to this point.
*/
if (posix_pathnames) {
ret = SMB_VFS_LSTAT(conn,name, &st);
} else {
ret = SMB_VFS_STAT(conn,name, &st);
}
if (ret == 0) {
/*
* It exists. it must either be a directory or this must
* be the last part of the path for it to be OK.
*/
if (end && !(st.st_mode & S_IFDIR)) {
/*
* An intermediate part of the name isn't
* a directory.
*/
DEBUG(5,("Not a dir %s\n",start));
*end = '/';
/*
* We need to return the fact that the
* intermediate name resolution failed. This
* is used to return an error of ERRbadpath
* rather than ERRbadfile. Some Windows
* applications depend on the difference between
* these two errors.
*/
result = NT_STATUS_OBJECT_PATH_NOT_FOUND;
goto fail;
}
if (!end) {
/*
* We just scanned for, and found the end of
* the path. We must return the valid stat
* struct. JRA.
*/
*pst = st;
}
} else {
char *found_name = NULL;
/* Stat failed - ensure we don't use it. */
SET_STAT_INVALID(st);
/*
* Reset errno so we can detect
* directory open errors.
*/
errno = 0;
/*
* Try to find this part of the path in the directory.
*/
if (name_has_wildcard ||
(get_real_filename_mangled(
conn, dirpath, start,
talloc_tos(), &found_name) == -1)) {
char *unmangled;
if (end) {
/*
* An intermediate part of the name
* can't be found.
*/
DEBUG(5,("Intermediate not found %s\n",
start));
*end = '/';
/*
* We need to return the fact that the
* intermediate name resolution failed.
* This is used to return an error of
* ERRbadpath rather than ERRbadfile.
* Some Windows applications depend on
* the difference between these two
* errors.
*/
/*
* ENOENT, ENOTDIR and ELOOP all map
* to NT_STATUS_OBJECT_PATH_NOT_FOUND
* in the filename walk.
*/
if (errno == ENOENT ||
errno == ENOTDIR ||
errno == ELOOP) {
result =
NT_STATUS_OBJECT_PATH_NOT_FOUND;
}
else {
result =
map_nt_error_from_unix(errno);
}
goto fail;
}
/* ENOENT is the only valid error here. */
if ((errno != 0) && (errno != ENOENT)) {
/*
* ENOTDIR and ELOOP both map to
* NT_STATUS_OBJECT_PATH_NOT_FOUND
* in the filename walk.
*/
if (errno == ENOTDIR ||
errno == ELOOP) {
result =
NT_STATUS_OBJECT_PATH_NOT_FOUND;
}
else {
result =
map_nt_error_from_unix(errno);
}
goto fail;
}
/*
* Just the last part of the name doesn't exist.
* We need to strupper() or strlower() it as
* this conversion may be used for file creation
* purposes. Fix inspired by
* Thomas Neumann <*****@*****.**>.
*/
if (!conn->case_preserve ||
(mangle_is_8_3(start, False,
conn->params) &&
!conn->short_case_preserve)) {
strnorm(start,
lp_defaultcase(SNUM(conn)));
}
/*
* check on the mangled stack to see if we can
* recover the base of the filename.
*/
if (mangle_is_mangled(start, conn->params)
&& mangle_lookup_name_from_8_3(ctx,
start,
&unmangled,
conn->params)) {
char *tmp;
size_t start_ofs = start - name;
if (*dirpath != '\0') {
tmp = talloc_asprintf(ctx,
"%s/%s", dirpath,
unmangled);
TALLOC_FREE(unmangled);
}
else {
tmp = unmangled;
}
if (tmp == NULL) {
DEBUG(0, ("talloc failed\n"));
return NT_STATUS_NO_MEMORY;
}
TALLOC_FREE(name);
name = tmp;
start = name + start_ofs;
end = start + strlen(start);
}
DEBUG(5,("New file %s\n",start));
goto done;
}
/*
* Restore the rest of the string. If the string was
* mangled the size may have changed.
*/
if (end) {
char *tmp;
size_t start_ofs = start - name;
if (*dirpath != '\0') {
tmp = talloc_asprintf(ctx,
"%s/%s/%s", dirpath,
found_name, end+1);
}
else {
tmp = talloc_asprintf(ctx,
"%s/%s", found_name,
end+1);
}
if (tmp == NULL) {
DEBUG(0, ("talloc_asprintf failed\n"));
return NT_STATUS_NO_MEMORY;
}
TALLOC_FREE(name);
name = tmp;
start = name + start_ofs;
end = start + strlen(found_name);
*end = '\0';
} else {
char *tmp;
size_t start_ofs = start - name;
if (*dirpath != '\0') {
tmp = talloc_asprintf(ctx,
"%s/%s", dirpath,
found_name);
} else {
tmp = talloc_strdup(ctx,
found_name);
}
if (tmp == NULL) {
DEBUG(0, ("talloc failed\n"));
return NT_STATUS_NO_MEMORY;
}
TALLOC_FREE(name);
name = tmp;
start = name + start_ofs;
/*
* We just scanned for, and found the end of
* the path. We must return a valid stat struct
* if it exists. JRA.
*/
if (posix_pathnames) {
ret = SMB_VFS_LSTAT(conn,name, &st);
} else {
ret = SMB_VFS_STAT(conn,name, &st);
}
if (ret == 0) {
*pst = st;
} else {
SET_STAT_INVALID(st);
}
}
TALLOC_FREE(found_name);
} /* end else */
#ifdef DEVELOPER
/*
* This sucks!
* We should never provide different behaviors
* depending on DEVELOPER!!!
*/
if (VALID_STAT(st)) {
bool delete_pending;
get_file_infos(vfs_file_id_from_sbuf(conn, &st),
&delete_pending, NULL);
if (delete_pending) {
result = NT_STATUS_DELETE_PENDING;
goto fail;
}
}
#endif
/*
* Add to the dirpath that we have resolved so far.
*/
if (*dirpath != '\0') {
char *tmp = talloc_asprintf(ctx,
"%s/%s", dirpath, start);
if (!tmp) {
DEBUG(0, ("talloc_asprintf failed\n"));
return NT_STATUS_NO_MEMORY;
}
TALLOC_FREE(dirpath);
dirpath = tmp;
}
else {
TALLOC_FREE(dirpath);
if (!(dirpath = talloc_strdup(ctx,start))) {
DEBUG(0, ("talloc_strdup failed\n"));
return NT_STATUS_NO_MEMORY;
}
}
/*
* Don't cache a name with mangled or wildcard components
* as this can change the size.
*/
if(!component_was_mangled && !name_has_wildcard) {
stat_cache_add(orig_path, dirpath,
conn->case_sensitive);
}
/*
* Restore the / that we wiped out earlier.
*/
if (end) {
*end = '/';
}
}
/*
* Don't cache a name with mangled or wildcard components
* as this can change the size.
*/
if(!component_was_mangled && !name_has_wildcard) {
stat_cache_add(orig_path, name, conn->case_sensitive);
}
/*
* The name has been resolved.
*/
DEBUG(5,("conversion finished %s -> %s\n",orig_path, name));
done:
if (stream != NULL) {
char *tmp = NULL;
result = build_stream_path(ctx, conn, orig_path, name, stream,
pst, &tmp);
if (!NT_STATUS_IS_OK(result)) {
goto fail;
}
DEBUG(10, ("build_stream_path returned %s\n", tmp));
TALLOC_FREE(name);
name = tmp;
}
*pp_conv_path = name;
TALLOC_FREE(dirpath);
return NT_STATUS_OK;
fail:
DEBUG(10, ("dirpath = [%s] start = [%s]\n", dirpath, start));
if (*dirpath != '\0') {
*pp_conv_path = talloc_asprintf(ctx,
"%s/%s", dirpath, start);
} else {
*pp_conv_path = talloc_strdup(ctx, start);
}
if (!*pp_conv_path) {
DEBUG(0, ("talloc_asprintf failed\n"));
return NT_STATUS_NO_MEMORY;
}
TALLOC_FREE(name);
TALLOC_FREE(dirpath);
return result;
}
