#include "../libcli/security/security.h"
#include "../librpc/gen_ndr/ndr_security.h"
#include "../lib/util/bitmap.h"
-#include "lib/crypto/sha256.h"
#include "passdb/lookup_sid.h"
+#include <gnutls/gnutls.h>
+#include <gnutls/crypto.h>
+
static NTSTATUS create_acl_blob(const struct security_descriptor *psd,
DATA_BLOB *pblob,
uint16_t hash_type,
static NTSTATUS hash_blob_sha256(DATA_BLOB blob,
uint8_t *hash)
{
- SHA256_CTX tctx;
+ int rc;
- memset(hash, '\0', XATTR_SD_HASH_SIZE);
+ ZERO_ARRAY_LEN(hash, XATTR_SD_HASH_SIZE);
- samba_SHA256_Init(&tctx);
- samba_SHA256_Update(&tctx, blob.data, blob.length);
- samba_SHA256_Final(hash, &tctx);
+ rc = gnutls_hash_fast(GNUTLS_DIG_SHA256,
+ blob.data,
+ blob.length,
+ hash);
+ if (rc < 0) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
return NT_STATUS_OK;
}
struct security_descriptor_hash_v4 sd_hs4;
enum ndr_err_code ndr_err;
TALLOC_CTX *ctx = talloc_tos();
- NTTIME nttime_now;
- struct timeval now = timeval_current();
- nttime_now = timeval_to_nttime(&now);
ZERO_STRUCT(xacl);
ZERO_STRUCT(sd_hs4);
xacl.info.sd_hs4->hash_type = hash_type;
memcpy(&xacl.info.sd_hs4->hash[0], hash, XATTR_SD_HASH_SIZE);
xacl.info.sd_hs4->description = description;
- xacl.info.sd_hs4->time = nttime_now;
memcpy(&xacl.info.sd_hs4->sys_acl_hash[0], sys_acl_hash, XATTR_SD_HASH_SIZE);
ndr_err = ndr_push_struct_blob(
} else {
/*
* make_sec_acl() at the bottom of this function
- * dupliates new_ace_list
+ * duplicates new_ace_list
*/
new_ace_list = talloc_zero_array(talloc_tos(),
struct security_ace,
* and psd_from_fs set to false.
*
* Returning the underlying filesystem ACL in case no. 2 is really just an
- * optimisation, because some validations have to fetch the filesytem ACL as
+ * optimisation, because some validations have to fetch the filesystem ACL as
* part of the validation, so we already have it available and callers might
* need it as well.
**/
static NTSTATUS validate_nt_acl_blob(TALLOC_CTX *mem_ctx,
- vfs_handle_struct *handle,
- files_struct *fsp,
- const struct smb_filename *smb_fname,
- const DATA_BLOB *blob,
- struct security_descriptor **ppsd,
- bool *psd_is_from_fs)
+ vfs_handle_struct *handle,
+ struct files_struct *fsp,
+ const struct smb_filename *smb_fname,
+ const DATA_BLOB *blob,
+ struct security_descriptor **ppsd,
+ bool *psd_is_from_fs)
{
NTSTATUS status;
uint16_t hash_type = XATTR_SD_HASH_TYPE_NONE;
switch (xattr_version) {
case 1:
case 2:
- /* These xattr types are unilatteral, they do not
+ /* These xattr types are unilateral, they do not
* require confirmation of the hash. In particular,
* the NTVFS file server uses version 1, but
* 'samba-tool ntacl' can set these as well */
case 4:
{
int ret;
- if (fsp) {
- /* Get the full underlying sd, then hash. */
- ret = SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle,
- fsp,
- mem_ctx,
- &sys_acl_blob_description,
- &sys_acl_blob);
- } else {
- /* Get the full underlying sd, then hash. */
- ret = SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FILE(handle,
- smb_fname,
- mem_ctx,
- &sys_acl_blob_description,
- &sys_acl_blob);
- }
-
+ /* Get the full underlying sd, then hash. */
+ ret = SMB_VFS_NEXT_SYS_ACL_BLOB_GET_FD(handle,
+ fsp,
+ mem_ctx,
+ &sys_acl_blob_description,
+ &sys_acl_blob);
/* If we fail to get the ACL blob (for some reason) then this
* is not fatal, we just work based on the NT ACL only */
if (ret == 0) {
case 3:
/* Get the full underlying sd for the hash
or to return as backup. */
- if (fsp) {
- status = SMB_VFS_NEXT_FGET_NT_ACL(handle,
- fsp,
- HASH_SECURITY_INFO,
- mem_ctx,
- &psd_fs);
- } else {
- status = SMB_VFS_NEXT_GET_NT_ACL(handle,
- smb_fname,
- HASH_SECURITY_INFO,
- mem_ctx,
- &psd_fs);
- }
-
+ status = SMB_VFS_NEXT_FGET_NT_ACL(handle,
+ fsp,
+ HASH_SECURITY_INFO,
+ mem_ctx,
+ &psd_fs);
if (!NT_STATUS_IS_OK(status)) {
DBG_DEBUG("get_next_acl for file %s returned %s\n",
smb_fname->base_name, nt_errstr(status));
return status;
}
-static NTSTATUS stat_fsp_or_smb_fname(vfs_handle_struct *handle,
- files_struct *fsp,
- const struct smb_filename *smb_fname,
- SMB_STRUCT_STAT *sbuf,
- SMB_STRUCT_STAT **psbuf)
-{
- NTSTATUS status;
- int ret;
-
- if (fsp) {
- status = vfs_stat_fsp(fsp);
- if (!NT_STATUS_IS_OK(status)) {
- return status;
- }
- *psbuf = &fsp->fsp_name->st;
- } else {
- /*
- * https://bugzilla.samba.org/show_bug.cgi?id=11249
- *
- * We are currently guaranteed that 'name' here is a
- * smb_fname->base_name, which *cannot* contain a stream name
- * (':'). vfs_stat_smb_fname() splits a name into a base name +
- * stream name, which when we get here we know we've already
- * done. So we have to call the stat or lstat VFS calls
- * directly here. Else, a base_name that contains a ':' (from a
- * demangled name) will get split again.
- *
- * FIXME.
- * This uglyness will go away once smb_fname is fully plumbed
- * through the VFS.
- */
- ret = vfs_stat_smb_basename(handle->conn,
- smb_fname,
- sbuf);
- if (ret == -1) {
- return map_nt_error_from_unix(errno);
- }
- }
-
- return NT_STATUS_OK;
-}
-
/*******************************************************************
- Pull a DATA_BLOB from an xattr given a pathname.
+ Pull a DATA_BLOB from an xattr given an fsp.
If the hash doesn't match, or doesn't exist - return the underlying
filesystem sd.
*******************************************************************/
-NTSTATUS get_nt_acl_common(
- NTSTATUS (*get_acl_blob_fn)(TALLOC_CTX *ctx,
+NTSTATUS fget_nt_acl_common(
+ NTSTATUS (*fget_acl_blob_fn)(TALLOC_CTX *ctx,
vfs_handle_struct *handle,
files_struct *fsp,
- const struct smb_filename *smb_fname,
DATA_BLOB *pblob),
vfs_handle_struct *handle,
files_struct *fsp,
- const struct smb_filename *smb_fname_in,
uint32_t security_info,
TALLOC_CTX *mem_ctx,
struct security_descriptor **ppdesc)
DATA_BLOB blob = data_blob_null;
NTSTATUS status;
struct security_descriptor *psd = NULL;
- const struct smb_filename *smb_fname = NULL;
+ const struct smb_filename *smb_fname = fsp->fsp_name;
bool psd_is_from_fs = false;
struct acl_common_config *config = NULL;
struct acl_common_config,
return NT_STATUS_UNSUCCESSFUL);
- if (fsp && smb_fname_in == NULL) {
- smb_fname = fsp->fsp_name;
- } else {
- smb_fname = smb_fname_in;
- }
-
DBG_DEBUG("name=%s\n", smb_fname->base_name);
- status = get_acl_blob_fn(mem_ctx, handle, fsp, smb_fname, &blob);
+ status = fget_acl_blob_fn(mem_ctx, handle, fsp, &blob);
if (NT_STATUS_IS_OK(status)) {
status = validate_nt_acl_blob(mem_ctx,
- handle,
- fsp,
- smb_fname,
- &blob,
- &psd,
- &psd_is_from_fs);
+ handle,
+ fsp,
+ smb_fname,
+ &blob,
+ &psd,
+ &psd_is_from_fs);
TALLOC_FREE(blob.data);
if (!NT_STATUS_IS_OK(status)) {
DBG_DEBUG("ACL validation for [%s] failed\n",
* known */
if (config->ignore_system_acls) {
- SMB_STRUCT_STAT sbuf;
- SMB_STRUCT_STAT *psbuf = &sbuf;
-
- status = stat_fsp_or_smb_fname(handle, fsp, smb_fname,
- &sbuf, &psbuf);
+ status = vfs_stat_fsp(fsp);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
mem_ctx,
config->default_acl_style,
smb_fname->base_name,
- psbuf,
+ &fsp->fsp_name->st,
&psd);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
}
} else {
- if (fsp) {
- status = SMB_VFS_NEXT_FGET_NT_ACL(handle,
- fsp,
- security_info,
- mem_ctx,
- &psd);
- } else {
- status = SMB_VFS_NEXT_GET_NT_ACL(handle,
- smb_fname,
- security_info,
- mem_ctx,
- &psd);
- }
+ status = SMB_VFS_NEXT_FGET_NT_ACL(handle,
+ fsp,
+ security_info,
+ mem_ctx,
+ &psd);
if (!NT_STATUS_IS_OK(status)) {
DBG_DEBUG("get_next_acl for file %s "
}
if (psd_is_from_fs) {
- SMB_STRUCT_STAT sbuf;
- SMB_STRUCT_STAT *psbuf = &sbuf;
- bool is_directory = false;
+ status = vfs_stat_fsp(fsp);
+ if (!NT_STATUS_IS_OK(status)) {
+ goto fail;
+ }
/*
* We're returning the underlying ACL from the
* inheritable ACE entries we have to fake them.
*/
- status = stat_fsp_or_smb_fname(handle, fsp, smb_fname,
- &sbuf, &psbuf);
- if (!NT_STATUS_IS_OK(status)) {
- goto fail;
- }
-
- is_directory = S_ISDIR(psbuf->st_ex_mode);
-
- if (is_directory && !sd_has_inheritable_components(psd, true)) {
+ if (fsp->fsp_flags.is_directory &&
+ !sd_has_inheritable_components(psd, true)) {
status = add_directory_inheritable_components(
handle,
smb_fname->base_name,
- psbuf,
+ &fsp->fsp_name->st,
psd);
if (!NT_STATUS_IS_OK(status)) {
goto fail;
{
NTSTATUS status;
const struct security_token *token = NULL;
+ struct dom_sid_buf buf;
status = SMB_VFS_NEXT_FSET_NT_ACL(handle, fsp, security_info_sent, psd);
if (!NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
/* We got access denied here. If we're already root,
or we didn't need to do a chown, or the fsp isn't
open with WRITE_OWNER access, just return. */
- if (get_current_uid(handle->conn) == 0 || chown_needed == false ||
- !(fsp->access_mask & SEC_STD_WRITE_OWNER)) {
+ if (get_current_uid(handle->conn) == 0 || !chown_needed) {
return NT_STATUS_ACCESS_DENIED;
}
+ status = check_any_access_fsp(fsp, SEC_STD_WRITE_OWNER);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
/*
* Only allow take-ownership, not give-ownership. That's the way Windows
}
DBG_DEBUG("overriding chown on file %s for sid %s\n",
- fsp_str_dbg(fsp), sid_string_tos(psd->owner_sid));
+ fsp_str_dbg(fsp),
+ dom_sid_str_buf(psd->owner_sid, &buf));
/* Ok, we failed to chown and we have
SEC_STD_WRITE_OWNER access - override. */
*********************************************************************/
NTSTATUS fset_nt_acl_common(
- NTSTATUS (*get_acl_blob_fn)(TALLOC_CTX *ctx,
+ NTSTATUS (*fget_acl_blob_fn)(TALLOC_CTX *ctx,
vfs_handle_struct *handle,
files_struct *fsp,
- const struct smb_filename *smb_fname,
DATA_BLOB *pblob),
NTSTATUS (*store_acl_blob_fsp_fn)(vfs_handle_struct *handle,
files_struct *fsp,
TALLOC_CTX *frame = talloc_stackframe();
bool ignore_file_system_acl = lp_parm_bool(
SNUM(handle->conn), module_name, "ignore system acls", false);
+ struct acl_common_fsp_ext *ext = NULL;
if (DEBUGLEVEL >= 10) {
DBG_DEBUG("incoming sd for file %s\n", fsp_str_dbg(fsp));
discard_const_p(struct security_descriptor, orig_psd));
}
- status = get_nt_acl_common(get_acl_blob_fn, handle, fsp,
- NULL,
+ status = fget_nt_acl_common(fget_acl_blob_fn, handle, fsp,
SECINFO_OWNER|SECINFO_GROUP|SECINFO_DACL|SECINFO_SACL,
frame,
&psd);
psd->type |= SEC_DESC_SACL_PRESENT;
}
+ ext = VFS_ADD_FSP_EXTENSION(handle,
+ fsp,
+ struct acl_common_fsp_ext,
+ NULL);
+ ext->setting_nt_acl = true;
+
if (ignore_file_system_acl) {
if (chown_needed) {
/* send only ownership stuff to lower layer */
status = set_underlying_acl(handle, fsp, psd,
security_info_sent, true);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(frame);
- return status;
+ goto done;
}
}
ZERO_ARRAY(hash);
status = store_v3_blob(store_acl_blob_fsp_fn, handle, fsp, psd,
NULL, hash);
-
- TALLOC_FREE(frame);
- return status;
+ goto done;
}
status = set_underlying_acl(handle, fsp, psd, security_info_sent,
chown_needed);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(frame);
- return status;
+ goto done;
}
/* Get the full underlying sd, then hash. */
&pdesc_next);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(frame);
- return status;
+ goto done;
}
status = hash_sd_sha256(pdesc_next, hash);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(frame);
- return status;
+ goto done;
}
/* Get the full underlying sd, then hash. */
status = store_v3_blob(store_acl_blob_fsp_fn, handle, fsp, psd,
pdesc_next, hash);
- TALLOC_FREE(frame);
- return status;
+ goto done;
}
status = hash_blob_sha256(sys_acl_blob, sys_acl_hash);
if (!NT_STATUS_IS_OK(status)) {
- TALLOC_FREE(frame);
- return status;
+ goto done;
}
if (DEBUGLEVEL >= 10) {
}
/* We store hashes of both the sys ACL blob and the NT
- * security desciptor mapped from that ACL so as to improve
- * our chances against some inadvertant change breaking the
+ * security descriptor mapped from that ACL so as to improve
+ * our chances against some inadvertent change breaking the
* hash used */
status = create_sys_acl_blob(psd, &blob, XATTR_SD_HASH_TYPE_SHA256, hash,
sys_acl_description, sys_acl_hash);
if (!NT_STATUS_IS_OK(status)) {
DBG_DEBUG("create_sys_acl_blob failed\n");
- TALLOC_FREE(frame);
- return status;
+ goto done;
}
status = store_acl_blob_fsp_fn(handle, fsp, &blob);
+done:
+ VFS_REMOVE_FSP_EXTENSION(handle, fsp);
TALLOC_FREE(frame);
return status;
}
static int acl_common_remove_object(vfs_handle_struct *handle,
+ struct files_struct *dirfsp,
const struct smb_filename *smb_fname,
bool is_directory)
{
struct file_id id;
files_struct *fsp = NULL;
int ret = 0;
- char *parent_dir = NULL;
- const char *final_component = NULL;
- struct smb_filename local_fname = {0};
- struct smb_filename parent_dir_fname = {0};
+ struct smb_filename *full_fname = NULL;
+ struct smb_filename *local_fname = NULL;
+ struct smb_filename *parent_dir_fname = NULL;
int saved_errno = 0;
struct smb_filename *saved_dir_fname = NULL;
+ NTSTATUS status;
saved_dir_fname = vfs_GetWd(talloc_tos(),conn);
if (saved_dir_fname == NULL) {
goto out;
}
- if (!parent_dirname(talloc_tos(), smb_fname->base_name,
- &parent_dir, &final_component)) {
- saved_errno = ENOMEM;
+ full_fname = full_path_from_dirfsp_atname(talloc_tos(),
+ dirfsp,
+ smb_fname);
+ if (full_fname == NULL) {
goto out;
}
- DBG_DEBUG("removing %s %s/%s\n", is_directory ? "directory" : "file",
- parent_dir, final_component);
+ status = SMB_VFS_PARENT_PATHNAME(conn,
+ talloc_tos(),
+ full_fname,
+ &parent_dir_fname,
+ &local_fname);
+ if (!NT_STATUS_IS_OK(status)) {
+ saved_errno = map_errno_from_nt_status(status);
+ goto out;
+ }
- parent_dir_fname = (struct smb_filename) { .base_name = parent_dir };
+ DBG_DEBUG("removing %s %s\n", is_directory ? "directory" : "file",
+ smb_fname_str_dbg(full_fname));
/* cd into the parent dir to pin it. */
- ret = vfs_ChDir(conn, &parent_dir_fname);
+ ret = vfs_ChDir(conn, parent_dir_fname);
if (ret == -1) {
saved_errno = errno;
goto out;
}
- local_fname.base_name = discard_const_p(char, final_component);
-
/* Must use lstat here. */
- ret = SMB_VFS_LSTAT(conn, &local_fname);
+ ret = SMB_VFS_LSTAT(conn, local_fname);
if (ret == -1) {
saved_errno = errno;
goto out;
}
/* Ensure we have this file open with DELETE access. */
- id = vfs_file_id_from_sbuf(conn, &local_fname.st);
- for (fsp = file_find_di_first(conn->sconn, id); fsp;
- fsp = file_find_di_next(fsp)) {
+ id = vfs_file_id_from_sbuf(conn, &local_fname->st);
+ for (fsp = file_find_di_first(conn->sconn, id, true); fsp;
+ fsp = file_find_di_next(fsp, true)) {
if (fsp->access_mask & DELETE_ACCESS &&
- fsp->delete_on_close) {
+ fsp->fsp_flags.delete_on_close)
+ {
/* We did open this for delete,
* allow the delete as root.
*/
}
if (!fsp) {
- DBG_DEBUG("%s %s/%s not an open file\n",
+ DBG_DEBUG("%s %s not an open file\n",
is_directory ? "directory" : "file",
- parent_dir, final_component);
+ smb_fname_str_dbg(full_fname));
saved_errno = EACCES;
goto out;
}
become_root();
if (is_directory) {
- ret = SMB_VFS_NEXT_RMDIR(handle, &local_fname);
+ ret = SMB_VFS_NEXT_UNLINKAT(handle,
+ dirfsp,
+ smb_fname,
+ AT_REMOVEDIR);
} else {
- ret = SMB_VFS_NEXT_UNLINK(handle, &local_fname);
+ ret = SMB_VFS_NEXT_UNLINKAT(handle,
+ dirfsp,
+ smb_fname,
+ 0);
}
unbecome_root();
out:
- TALLOC_FREE(parent_dir);
+ TALLOC_FREE(parent_dir_fname);
+ TALLOC_FREE(full_fname);
if (saved_dir_fname) {
vfs_ChDir(conn, saved_dir_fname);
}
int rmdir_acl_common(struct vfs_handle_struct *handle,
- const struct smb_filename *smb_fname)
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname)
{
int ret;
/* Try the normal rmdir first. */
- ret = SMB_VFS_NEXT_RMDIR(handle, smb_fname);
+ ret = SMB_VFS_NEXT_UNLINKAT(handle,
+ dirfsp,
+ smb_fname,
+ AT_REMOVEDIR);
if (ret == 0) {
return 0;
}
/* Failed due to access denied,
see if we need to root override. */
return acl_common_remove_object(handle,
+ dirfsp,
smb_fname,
true);
}
}
int unlink_acl_common(struct vfs_handle_struct *handle,
- const struct smb_filename *smb_fname)
+ struct files_struct *dirfsp,
+ const struct smb_filename *smb_fname,
+ int flags)
{
int ret;
/* Try the normal unlink first. */
- ret = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
+ ret = SMB_VFS_NEXT_UNLINKAT(handle,
+ dirfsp,
+ smb_fname,
+ flags);
if (ret == 0) {
return 0;
}
return -1;
}
return acl_common_remove_object(handle,
+ dirfsp,
smb_fname,
false);
}
return -1;
}
-int chmod_acl_module_common(struct vfs_handle_struct *handle,
- const struct smb_filename *smb_fname,
- mode_t mode)
-{
- if (smb_fname->flags & SMB_FILENAME_POSIX_PATH) {
- /* Only allow this on POSIX pathnames. */
- return SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
- }
- return 0;
-}
-
int fchmod_acl_module_common(struct vfs_handle_struct *handle,
struct files_struct *fsp, mode_t mode)
{
- if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
+ if (fsp->posix_flags & FSP_POSIX_FLAGS_PATHNAMES
+ || fsp->fsp_name->flags & SMB_FILENAME_POSIX_PATH) {
/* Only allow this on POSIX opens. */
return SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
}
return 0;
}
-
-int fchmod_acl_acl_module_common(struct vfs_handle_struct *handle,
- struct files_struct *fsp, mode_t mode)
-{
- if (fsp->posix_flags & FSP_POSIX_FLAGS_OPEN) {
- /* Only allow this on POSIX opens. */
- return SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
- }
- return 0;
-}
git.samba.org / samba.git / blobdiff