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Diffstat (limited to 'source3/smbd/nttrans.c')
-rw-r--r--source3/smbd/nttrans.c1217
1 files changed, 1056 insertions, 161 deletions
diff --git a/source3/smbd/nttrans.c b/source3/smbd/nttrans.c
index 70023e2407..9615c5ada2 100644
--- a/source3/smbd/nttrans.c
+++ b/source3/smbd/nttrans.c
@@ -37,17 +37,14 @@ static void remove_pending_change_notify_requests_by_mid(int mid);
static char *known_nt_pipes[] = {
"\\LANMAN",
"\\srvsvc",
- "\\svcctl",
"\\samr",
"\\wkssvc",
- "\\browser",
"\\NETLOGON",
"\\ntlsa",
"\\ntsvcs",
"\\lsass",
"\\lsarpc",
"\\winreg",
- "\\spoolss",
NULL
};
@@ -58,7 +55,7 @@ static char *known_nt_pipes[] = {
HACK ! Always assumes smb_setup field is zero.
****************************************************************************/
-static int send_nt_replies(char *outbuf, int bufsize, char *params,
+static int send_nt_replies(char *inbuf, char *outbuf, int bufsize, uint32 nt_error, char *params,
int paramsize, char *pdata, int datasize)
{
extern int max_send;
@@ -78,6 +75,13 @@ static int send_nt_replies(char *outbuf, int bufsize, char *params,
set_message(outbuf,18,0,True);
+ if(nt_error != 0) {
+ /* NT Error. */
+ SSVAL(outbuf,smb_flg2, SVAL(outbuf,smb_flg2) | FLAGS2_32_BIT_ERROR_CODES);
+
+ ERROR(0,nt_error);
+ }
+
/*
* If there genuinely are no parameters or data to send just send
* the empty packet.
@@ -355,18 +359,25 @@ static int map_create_disposition( uint32 create_disposition)
Utility function to map share modes.
****************************************************************************/
-static int map_share_mode( char *fname, uint32 desired_access, uint32 share_access, uint32 file_attributes)
+static int map_share_mode( BOOL *pstat_open_only, char *fname,
+ uint32 desired_access, uint32 share_access, uint32 file_attributes)
{
int smb_open_mode = -1;
- switch( desired_access & (FILE_READ_DATA|FILE_WRITE_DATA) ) {
+ *pstat_open_only = False;
+
+ switch( desired_access & (FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA) ) {
case FILE_READ_DATA:
smb_open_mode = DOS_OPEN_RDONLY;
break;
case FILE_WRITE_DATA:
+ case FILE_APPEND_DATA:
+ case FILE_WRITE_DATA|FILE_APPEND_DATA:
smb_open_mode = DOS_OPEN_WRONLY;
break;
case FILE_READ_DATA|FILE_WRITE_DATA:
+ case FILE_READ_DATA|FILE_WRITE_DATA|FILE_APPEND_DATA:
+ case FILE_READ_DATA|FILE_APPEND_DATA:
smb_open_mode = DOS_OPEN_RDWR;
break;
}
@@ -386,8 +397,12 @@ static int map_share_mode( char *fname, uint32 desired_access, uint32 share_acce
*/
if (smb_open_mode == -1) {
+ if(desired_access == WRITE_DAC_ACCESS || desired_access == READ_CONTROL_ACCESS)
+ *pstat_open_only = True;
+
if(desired_access & (DELETE_ACCESS|WRITE_DAC_ACCESS|WRITE_OWNER_ACCESS|
FILE_EXECUTE|FILE_READ_ATTRIBUTES|
+ FILE_READ_EA|FILE_WRITE_EA|SYSTEM_SECURITY_ACCESS|
FILE_WRITE_ATTRIBUTES|READ_CONTROL_ACCESS))
smb_open_mode = DOS_OPEN_RDONLY;
else {
@@ -464,11 +479,40 @@ static time_t fail_time;
void fail_next_srvsvc_open(void)
{
+ /* Check client is WinNT proper; Win2K doesn't like Jeremy's hack - matty */
+ if (get_remote_arch() != RA_WINNT)
+ return;
+
fail_next_srvsvc = True;
fail_time = time(NULL);
DEBUG(10,("fail_next_srvsvc_open: setting up timeout close of \\srvsvc pipe for print fix.\n"));
}
+/*
+ * HACK alert.... see above - JRA.
+ */
+
+BOOL should_fail_next_srvsvc_open(const char *pipename)
+{
+
+ DEBUG(10,("should_fail_next_srvsvc_open: fail = %d, pipe = %s\n",
+ (int)fail_next_srvsvc, pipename));
+
+ if(fail_next_srvsvc && (time(NULL) > fail_time + HACK_FAIL_TIME)) {
+ fail_next_srvsvc = False;
+ fail_time = (time_t)0;
+ DEBUG(10,("should_fail_next_srvsvc_open: End of timeout close of \\srvsvc pipe for print fix.\n"));
+ }
+
+ if(fail_next_srvsvc && strequal(pipename, "srvsvc")) {
+ fail_next_srvsvc = False;
+ DEBUG(10,("should_fail_next_srvsvc_open: Deliberately failing open of \\srvsvc pipe for print fix.\n"));
+ return True;
+ }
+ return False;
+}
+
+
/****************************************************************************
Reply to an NT create and X call on a pipe.
****************************************************************************/
@@ -487,32 +531,15 @@ static int nt_open_pipe(char *fname, connection_struct *conn,
if( strequal(fname,known_nt_pipes[i]))
break;
- /*
- * HACK alert.... see above - JRA.
- */
-
- if(fail_next_srvsvc && (time(NULL) > fail_time + HACK_FAIL_TIME)) {
- fail_next_srvsvc = False;
- fail_time = (time_t)0;
- DEBUG(10,("nt_open_pipe: End of timeout close of \\srvsvc pipe for print fix.\n"));
- }
-
- if(fail_next_srvsvc && strequal(fname, "\\srvsvc")) {
- fail_next_srvsvc = False;
- DEBUG(10,("nt_open_pipe: Deliberately failing open of \\srvsvc pipe for print fix.\n"));
- return(ERROR(ERRSRV,ERRaccess));
- }
-
- /*
- * End hack alert.... see above - JRA.
- */
-
if ( known_nt_pipes[i] == NULL )
return(ERROR(ERRSRV,ERRaccess));
/* Strip \\ off the name. */
fname++;
+ if(should_fail_next_srvsvc_open(fname))
+ return (ERROR(ERRSRV,ERRaccess));
+
DEBUG(3,("nt_open_pipe: Known pipe %s opening.\n", fname));
p = open_rpc_pipe_p(fname, conn, vuid);
@@ -547,7 +574,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
/* Breakout the oplock request bits so we can set the
reply bits separately. */
int oplock_request = 0;
- mode_t unixmode;
+ mode_t unixmode;
int pnum = -1;
int fmode=0,rmode=0;
SMB_OFF_T file_len = 0;
@@ -556,6 +583,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
BOOL bad_path = False;
files_struct *fsp=NULL;
char *p = NULL;
+ BOOL stat_open_only = False;
/*
* We need to construct the open_and_X ofun value from the
@@ -576,8 +604,23 @@ int reply_ntcreate_and_X(connection_struct *conn,
files_struct *dir_fsp = file_fsp(inbuf,smb_ntcreate_RootDirectoryFid);
size_t dir_name_len;
- if(!dir_fsp || !dir_fsp->is_directory)
+ if(!dir_fsp)
+ return(ERROR(ERRDOS,ERRbadfid));
+
+ if(!dir_fsp->is_directory) {
+ /*
+ * Check to see if this is a mac fork of some kind.
+ */
+
+ get_filename(&fname[0], inbuf, smb_buf(inbuf)-inbuf,
+ smb_buflen(inbuf),fname_len);
+
+ if( fname[0] == ':') {
+ SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES);
+ return(ERROR(0, 0xc0000000|NT_STATUS_OBJECT_PATH_NOT_FOUND));
+ }
return(ERROR(ERRDOS,ERRbadfid));
+ }
/*
* Copy in the base directory name.
@@ -600,26 +643,17 @@ int reply_ntcreate_and_X(connection_struct *conn,
get_filename(&fname[dir_name_len], inbuf, smb_buf(inbuf)-inbuf,
smb_buflen(inbuf),fname_len);
-#if 0
- StrnCpy(&fname[dir_name_len], smb_buf(inbuf),fname_len);
- fname[dir_name_len+fname_len] = '\0';
-#endif
} else {
get_filename(fname, inbuf, smb_buf(inbuf)-inbuf,
smb_buflen(inbuf),fname_len);
-
-#if 0
- StrnCpy(fname,smb_buf(inbuf),fname_len);
- fname[fname_len] = '\0';
-#endif
}
/* If it's an IPC, use the pipe handler. */
- if (IS_IPC(conn) && lp_nt_pipe_support() && lp_security() != SEC_SHARE)
- {
+ if (IS_IPC(conn) && lp_nt_pipe_support()) {
+
int ret = nt_open_pipe(fname, conn, inbuf, outbuf, &pnum);
if(ret != 0)
return ret;
@@ -654,11 +688,13 @@ int reply_ntcreate_and_X(connection_struct *conn,
* desired access and the share access.
*/
- if((smb_open_mode = map_share_mode(fname, desired_access,
+ if((smb_open_mode = map_share_mode(&stat_open_only, fname, desired_access,
share_access,
- file_attributes)) == -1) {
+ file_attributes)) == -1)
return(ERROR(ERRDOS,ERRbadaccess));
- }
+
+ oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
+ oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0;
/*
* Ordinary file or directory.
@@ -670,11 +706,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
set_posix_case_semantics(file_attributes);
- if (!unix_dfs_convert(fname,conn,0,&bad_path,NULL))
- {
- SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES);
- return(ERROR(0, 0xc0000000|NT_STATUS_PATH_NOT_COVERED));
- }
+ unix_convert(fname,conn,0,&bad_path,NULL);
fsp = file_new();
if (!fsp) {
@@ -696,9 +728,6 @@ int reply_ntcreate_and_X(connection_struct *conn,
unixmode = unix_mode(conn,smb_attr | aARCH);
- oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
- oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0;
-
/*
* If it's a request for a directory open, deal with it separately.
*/
@@ -706,8 +735,8 @@ int reply_ntcreate_and_X(connection_struct *conn,
if(create_options & FILE_DIRECTORY_FILE) {
oplock_request = 0;
- open_directory(fsp, conn, fname, smb_ofun, unixmode,
- &smb_action);
+ open_directory(fsp, conn, fname, smb_ofun,
+ unixmode, &smb_action);
restore_case_semantics(file_attributes);
@@ -733,13 +762,12 @@ int reply_ntcreate_and_X(connection_struct *conn,
* before issuing an oplock break request to
* our client. JRA. */
- open_file_shared(fsp,conn,fname,smb_open_mode,
- smb_ofun,unixmode,
- oplock_request,&rmode,&smb_action);
+ open_file_shared(fsp,conn,fname,smb_open_mode,
+ smb_ofun,unixmode, oplock_request,&rmode,&smb_action);
if (!fsp->open) {
- /* We cheat here. The only case we
- * care about is a directory rename,
+ /* We cheat here. There are two cases we
+ * care about. One is a directory rename,
* where the NT client will attempt to
* open the source directory for
* DELETE access. Note that when the
@@ -752,21 +780,54 @@ int reply_ntcreate_and_X(connection_struct *conn,
* will generate an EISDIR error, so
* we can catch this here and open a
* pseudo handle that is flagged as a
- * directory. JRA. */
+ * directory. The second is an open
+ * for a permissions read only, which
+ * we handle in the open_file_stat case. JRA.
+ */
if(errno == EISDIR) {
+
+ /*
+ * Fail the open if it was explicitly a non-directory file.
+ */
+
+ if (create_options & FILE_NON_DIRECTORY_FILE) {
+ file_free(fsp);
+ restore_case_semantics(file_attributes);
+ SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES);
+ return(ERROR(0, 0xc0000000|NT_STATUS_FILE_IS_A_DIRECTORY));
+ }
+
oplock_request = 0;
-
- open_directory(fsp, conn, fname,
- smb_ofun, unixmode,
- &smb_action);
+ open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action);
if(!fsp->open) {
file_free(fsp);
restore_case_semantics(file_attributes);
return(UNIXERROR(ERRDOS,ERRnoaccess));
}
+#ifdef EROFS
+ } else if (((errno == EACCES) || (errno == EROFS)) && stat_open_only) {
+#else /* !EROFS */
+ } else if (errno == EACCES && stat_open_only) {
+#endif
+ /*
+ * We couldn't open normally and all we want
+ * are the permissions. Try and do a stat open.
+ */
+
+ oplock_request = 0;
+
+ open_file_stat(fsp,conn,fname,smb_open_mode,&sbuf,&smb_action);
+
+ if(!fsp->open) {
+ file_free(fsp);
+ restore_case_semantics(file_attributes);
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
} else {
+
if((errno == ENOENT) && bad_path) {
unix_ERR_class = ERRDOS;
unix_ERR_code = ERRbadpath;
@@ -782,15 +843,13 @@ int reply_ntcreate_and_X(connection_struct *conn,
}
if(fsp->is_directory) {
- if(fsp->conn->vfs_ops.stat(dos_to_unix(fsp->fsp_name, False),
- &sbuf) != 0) {
- close_directory(fsp);
+ if(dos_stat(fsp->fsp_name, &sbuf) != 0) {
+ close_file(fsp,True);
restore_case_semantics(file_attributes);
return(ERROR(ERRDOS,ERRnoaccess));
}
} else {
- if (fsp->conn->vfs_ops.fstat(fsp->fd_ptr->fd,&sbuf)
- != 0) {
+ if (!fsp->stat_open && sys_fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
close_file(fsp,False);
restore_case_semantics(file_attributes);
return(ERROR(ERRDOS,ERRnoaccess));
@@ -817,9 +876,9 @@ int reply_ntcreate_and_X(connection_struct *conn,
if (oplock_request && lp_fake_oplocks(SNUM(conn)))
smb_action |= EXTENDED_OPLOCK_GRANTED;
- if(oplock_request && fsp->granted_oplock)
+ if(oplock_request && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))
smb_action |= EXTENDED_OPLOCK_GRANTED;
-
+
set_message(outbuf,34,0,True);
p = outbuf + smb_vwv2;
@@ -828,8 +887,14 @@ int reply_ntcreate_and_X(connection_struct *conn,
* Currently as we don't support level II oplocks we just report
* exclusive & batch here.
*/
+
+ if (smb_action & EXTENDED_OPLOCK_GRANTED)
+ SCVAL(p,0, BATCH_OPLOCK_RETURN);
+ else if (LEVEL_II_OPLOCK_TYPE(fsp->oplock_type))
+ SCVAL(p,0, LEVEL_II_OPLOCK_RETURN);
+ else
+ SCVAL(p,0,NO_OPLOCK_RETURN);
- SCVAL(p,0, (smb_action & EXTENDED_OPLOCK_GRANTED ? 1 : 0));
p++;
SSVAL(p,0,fsp->fnum);
p += 2;
@@ -861,6 +926,7 @@ int reply_ntcreate_and_X(connection_struct *conn,
/****************************************************************************
Reply to a NT_TRANSACT_CREATE call (needs to process SD's).
****************************************************************************/
+
static int call_nt_transact_create(connection_struct *conn,
char *inbuf, char *outbuf, int length,
int bufsize,
@@ -893,6 +959,7 @@ static int call_nt_transact_create(connection_struct *conn,
BOOL bad_path = False;
files_struct *fsp = NULL;
char *p = NULL;
+ BOOL stat_open_only = False;
/*
* We need to construct the open_and_X ofun value from the
@@ -914,8 +981,24 @@ static int call_nt_transact_create(connection_struct *conn,
files_struct *dir_fsp = file_fsp(params,4);
size_t dir_name_len;
- if(!dir_fsp || !dir_fsp->is_directory)
+ if(!dir_fsp)
+ return(ERROR(ERRDOS,ERRbadfid));
+
+ if(!dir_fsp->is_directory) {
+ /*
+ * Check to see if this is a mac fork of some kind.
+ */
+
+ StrnCpy(fname,params+53,fname_len);
+ fname[fname_len] = '\0';
+
+ if( fname[0] == ':') {
+ SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES);
+ return(ERROR(0, 0xc0000000|NT_STATUS_OBJECT_PATH_NOT_FOUND));
+ }
+
return(ERROR(ERRDOS,ERRbadfid));
+ }
/*
* Copy in the base directory name.
@@ -951,17 +1034,26 @@ static int call_nt_transact_create(connection_struct *conn,
return ret;
smb_action = FILE_WAS_OPENED;
} else {
+
+ /*
+ * Now contruct the smb_open_mode value from the desired access
+ * and the share access.
+ */
+
+ if((smb_open_mode = map_share_mode( &stat_open_only, fname, desired_access,
+ share_access, file_attributes)) == -1)
+ return(ERROR(ERRDOS,ERRbadaccess));
+
+ oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
+ oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0;
+
/*
* Check if POSIX semantics are wanted.
*/
set_posix_case_semantics(file_attributes);
- if (!unix_dfs_convert(fname,conn,0,&bad_path,NULL))
- {
- SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES);
- return(ERROR(0, 0xc0000000|NT_STATUS_PATH_NOT_COVERED));
- }
+ unix_convert(fname,conn,0,&bad_path,NULL);
fsp = file_new();
if (!fsp) {
@@ -983,17 +1075,6 @@ static int call_nt_transact_create(connection_struct *conn,
unixmode = unix_mode(conn,smb_attr | aARCH);
- oplock_request = (flags & REQUEST_OPLOCK) ? EXCLUSIVE_OPLOCK : 0;
- oplock_request |= (flags & REQUEST_BATCH_OPLOCK) ? BATCH_OPLOCK : 0;
-
- /*
- * Now contruct the smb_open_mode value from the desired access
- * and the share access.
- */
-
- if((smb_open_mode = map_share_mode( fname, desired_access, share_access, file_attributes)) == -1)
- return(ERROR(ERRDOS,ERRbadaccess));
-
/*
* If it's a request for a directory open, deal with it separately.
*/
@@ -1012,37 +1093,96 @@ static int call_nt_transact_create(connection_struct *conn,
if(!fsp->open) {
file_free(fsp);
+ restore_case_semantics(file_attributes);
return(UNIXERROR(ERRDOS,ERRnoaccess));
}
+
+ if(dos_stat(fsp->fsp_name, &sbuf) != 0) {
+ close_file(fsp,True);
+ restore_case_semantics(file_attributes);
+ return(ERROR(ERRDOS,ERRnoaccess));
+ }
+
} else {
/*
* Ordinary file case.
*/
- open_file_shared(fsp,conn,fname,smb_open_mode,smb_ofun,
- unixmode,oplock_request,&rmode,&smb_action);
+ open_file_shared(fsp,conn,fname,smb_open_mode,smb_ofun,unixmode,
+ oplock_request,&rmode,&smb_action);
if (!fsp->open) {
- if((errno == ENOENT) && bad_path) {
- unix_ERR_class = ERRDOS;
- unix_ERR_code = ERRbadpath;
- }
- file_free(fsp);
- restore_case_semantics(file_attributes);
+ if(errno == EISDIR) {
- return(UNIXERROR(ERRDOS,ERRnoaccess));
- }
-
- if (fsp->conn->vfs_ops.fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
- close_file(fsp,False);
+ /*
+ * Fail the open if it was explicitly a non-directory file.
+ */
- restore_case_semantics(file_attributes);
+ if (create_options & FILE_NON_DIRECTORY_FILE) {
+ file_free(fsp);
+ restore_case_semantics(file_attributes);
+ SSVAL(outbuf, smb_flg2, FLAGS2_32_BIT_ERROR_CODES);
+ return(ERROR(0, 0xc0000000|NT_STATUS_FILE_IS_A_DIRECTORY));
+ }
+
+ oplock_request = 0;
+ open_directory(fsp, conn, fname, smb_ofun, unixmode, &smb_action);
+
+ if(!fsp->open) {
+ file_free(fsp);
+ restore_case_semantics(file_attributes);
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+#ifdef EROFS
+ } else if (((errno == EACCES) || (errno == EROFS)) && stat_open_only) {
+#else /* !EROFS */
+ } else if (errno == EACCES && stat_open_only) {
+#endif
- return(ERROR(ERRDOS,ERRnoaccess));
+ /*
+ * We couldn't open normally and all we want
+ * are the permissions. Try and do a stat open.
+ */
+
+ oplock_request = 0;
+
+ open_file_stat(fsp,conn,fname,smb_open_mode,&sbuf,&smb_action);
+
+ if(!fsp->open) {
+ file_free(fsp);
+ restore_case_semantics(file_attributes);
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+ } else {
+
+ if((errno == ENOENT) && bad_path) {
+ unix_ERR_class = ERRDOS;
+ unix_ERR_code = ERRbadpath;
+ }
+ file_free(fsp);
+
+ restore_case_semantics(file_attributes);
+
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
}
+ if(fsp->is_directory) {
+ if(dos_stat(fsp->fsp_name, &sbuf) != 0) {
+ close_file(fsp,True);
+ restore_case_semantics(file_attributes);
+ return(ERROR(ERRDOS,ERRnoaccess));
+ }
+ } else {
+ if (!fsp->stat_open && sys_fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
+ close_file(fsp,False);
+ restore_case_semantics(file_attributes);
+ return(ERROR(ERRDOS,ERRnoaccess));
+ }
+ }
+
file_len = sbuf.st_size;
fmode = dos_mode(conn,fname,&sbuf);
if(fmode == 0)
@@ -1063,7 +1203,7 @@ static int call_nt_transact_create(connection_struct *conn,
if (oplock_request && lp_fake_oplocks(SNUM(conn)))
smb_action |= EXTENDED_OPLOCK_GRANTED;
- if(oplock_request && fsp->granted_oplock)
+ if(oplock_request && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type))
smb_action |= EXTENDED_OPLOCK_GRANTED;
}
}
@@ -1075,8 +1215,16 @@ static int call_nt_transact_create(connection_struct *conn,
if(params == NULL)
return(ERROR(ERRDOS,ERRnomem));
+ memset((char *)params,'\0',69);
+
p = params;
- SCVAL(p,0, (smb_action & EXTENDED_OPLOCK_GRANTED ? 1 : 0));
+ if (smb_action & EXTENDED_OPLOCK_GRANTED)
+ SCVAL(p,0, BATCH_OPLOCK_RETURN);
+ else if (LEVEL_II_OPLOCK_TYPE(fsp->oplock_type))
+ SCVAL(p,0, LEVEL_II_OPLOCK_RETURN);
+ else
+ SCVAL(p,0,NO_OPLOCK_RETURN);
+
p += 2;
if (IS_IPC(conn)) {
SSVAL(p,0,pnum);
@@ -1119,7 +1267,7 @@ static int call_nt_transact_create(connection_struct *conn,
}
/* Send the required number of replies */
- send_nt_replies(outbuf, bufsize, params, 69, *ppdata, 0);
+ send_nt_replies(inbuf, outbuf, bufsize, 0, params, 69, *ppdata, 0);
return -1;
}
@@ -1156,6 +1304,7 @@ int reply_nttranss(connection_struct *conn,
/****************************************************************************
Reply to an NT transact rename command.
****************************************************************************/
+
static int call_nt_transact_rename(connection_struct *conn,
char *inbuf, char *outbuf, int length,
int bufsize,
@@ -1179,7 +1328,7 @@ static int call_nt_transact_rename(connection_struct *conn,
/*
* Rename was successful.
*/
- send_nt_replies(outbuf, bufsize, NULL, 0, NULL, 0);
+ send_nt_replies(inbuf, outbuf, bufsize, 0, NULL, 0, NULL, 0);
DEBUG(3,("nt transact rename from = %s, to = %s succeeded.\n",
fsp->fsp_name, new_name));
@@ -1191,6 +1340,18 @@ static int call_nt_transact_rename(connection_struct *conn,
}
/****************************************************************************
+ This is the structure to keep the information needed to
+ determine if a directory has changed.
+*****************************************************************************/
+
+typedef struct {
+ time_t modify_time; /* Info from the directory we're monitoring. */
+ time_t status_time; /* Info from the directory we're monitoring. */
+ time_t total_time; /* Total time of all directory entries - don't care if it wraps. */
+ unsigned int num_entries; /* Zero or the number of files in the directory. */
+} change_hash_data;
+
+/****************************************************************************
This is the structure to queue to implement NT change
notify. It consists of smb_size bytes stored from the
transact command (to keep the mid, tid etc around).
@@ -1201,9 +1362,9 @@ typedef struct {
ubi_slNode msg_next;
files_struct *fsp;
connection_struct *conn;
+ uint32 flags;
time_t next_check_time;
- time_t modify_time; /* Info from the directory we're monitoring. */
- time_t status_time; /* Info from the directory we're monitoring. */
+ change_hash_data change_data;
char request_buf[smb_size];
} change_notify_buf;
@@ -1244,8 +1405,92 @@ static void change_notify_reply_packet(char *inbuf, int error_class, uint32 erro
}
/****************************************************************************
+ Create the hash we will use to determine if the contents changed.
+*****************************************************************************/
+
+static BOOL create_directory_notify_hash( change_notify_buf *cnbp, change_hash_data *change_data)
+{
+ SMB_STRUCT_STAT st;
+ files_struct *fsp = cnbp->fsp;
+
+ memset((char *)change_data, '\0', sizeof(change_data));
+
+ /*
+ * Store the current timestamp on the directory we are monitoring.
+ */
+
+ if(dos_stat(fsp->fsp_name, &st) < 0) {
+ DEBUG(0,("create_directory_notify_hash: Unable to stat name = %s. \
+Error was %s\n", fsp->fsp_name, strerror(errno) ));
+ return False;
+ }
+
+ change_data->modify_time = st.st_mtime;
+ change_data->status_time = st.st_ctime;
+
+ /*
+ * If we are to watch for changes that are only stored
+ * in inodes of files, not in the directory inode, we must
+ * scan the directory and produce a unique identifier with
+ * which we can determine if anything changed. We use the
+ * modify and change times from all the files in the
+ * directory, added together (ignoring wrapping if it's
+ * larger than the max time_t value).
+ */
+
+ if(cnbp->flags & (FILE_NOTIFY_CHANGE_SIZE|FILE_NOTIFY_CHANGE_LAST_WRITE)) {
+ pstring full_name;
+ char *p;
+ char *fname;
+ size_t remaining_len;
+ size_t fullname_len;
+ void *dp = OpenDir(cnbp->conn, fsp->fsp_name, True);
+
+ if(dp == NULL) {
+ DEBUG(0,("create_directory_notify_hash: Unable to open directory = %s. \
+Error was %s\n", fsp->fsp_name, strerror(errno) ));
+ return False;
+ }
+
+ change_data->num_entries = 0;
+
+ pstrcpy(full_name, fsp->fsp_name);
+ pstrcat(full_name, "/");
+
+ fullname_len = strlen(full_name);
+ remaining_len = sizeof(full_name) - fullname_len - 1;
+ p = &full_name[fullname_len];
+
+ while ((fname = ReadDirName(dp))) {
+ if(strequal(fname, ".") || strequal(fname, ".."))
+ continue;
+
+ change_data->num_entries++;
+ safe_strcpy( p, fname, remaining_len);
+
+ memset(&st, '\0', sizeof(st));
+
+ /*
+ * Do the stat - but ignore errors.
+ */
+
+ if(dos_stat(full_name, &st) < 0) {
+ DEBUG(5,("create_directory_notify_hash: Unable to stat content file = %s. \
+Error was %s\n", fsp->fsp_name, strerror(errno) ));
+ }
+ change_data->total_time += (st.st_mtime + st.st_ctime);
+ }
+
+ CloseDir(dp);
+ }
+
+ return True;
+}
+
+/****************************************************************************
Delete entries by fnum from the change notify pending queue.
*****************************************************************************/
+
void remove_pending_change_notify_requests_by_fid(files_struct *fsp)
{
change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue );
@@ -1274,7 +1519,34 @@ static void remove_pending_change_notify_requests_by_mid(int mid)
while(cnbp != NULL) {
if(SVAL(cnbp->request_buf,smb_mid) == mid) {
- change_notify_reply_packet(cnbp->request_buf,0,NT_STATUS_CANCELLED);
+ change_notify_reply_packet(cnbp->request_buf,0,0xC0000000 |NT_STATUS_CANCELLED);
+ free((char *)ubi_slRemNext( &change_notify_queue, prev));
+ cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
+ continue;
+ }
+
+ prev = cnbp;
+ cnbp = (change_notify_buf *)ubi_slNext(cnbp);
+ }
+}
+
+/****************************************************************************
+ Delete entries by filename and cnum from the change notify pending queue.
+ Always send reply.
+*****************************************************************************/
+
+void remove_pending_change_notify_requests_by_filename(files_struct *fsp)
+{
+ change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue );
+ change_notify_buf *prev = NULL;
+
+ while(cnbp != NULL) {
+ /*
+ * We know it refers to the same directory if the connection number and
+ * the filename are identical.
+ */
+ if((cnbp->fsp->conn == fsp->conn) && strequal(cnbp->fsp->fsp_name,fsp->fsp_name)) {
+ change_notify_reply_packet(cnbp->request_buf,0,0xC0000000 |NT_STATUS_CANCELLED);
free((char *)ubi_slRemNext( &change_notify_queue, prev));
cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
continue;
@@ -1287,18 +1559,20 @@ static void remove_pending_change_notify_requests_by_mid(int mid)
/****************************************************************************
Process the change notify queue. Note that this is only called as root.
+ Returns True if there are still outstanding change notify requests on the
+ queue.
*****************************************************************************/
-void process_pending_change_notify_queue(time_t t)
+BOOL process_pending_change_notify_queue(time_t t)
{
change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue );
change_notify_buf *prev = NULL;
if(cnbp == NULL)
- return;
+ return False;
if(cnbp->next_check_time >= t)
- return;
+ return True;
/*
* It's time to check. Go through the queue and see if
@@ -1306,8 +1580,7 @@ void process_pending_change_notify_queue(time_t t)
*/
while((cnbp != NULL) && (cnbp->next_check_time <= t)) {
- SMB_STRUCT_STAT st;
- files_struct *fsp = cnbp->fsp;
+ change_hash_data change_data;
connection_struct *conn = cnbp->conn;
uint16 vuid = (lp_security() == SEC_SHARE) ? UID_FIELD_INVALID :
SVAL(cnbp->request_buf,smb_uid);
@@ -1343,9 +1616,9 @@ void process_pending_change_notify_queue(time_t t)
continue;
}
- if(fsp->conn->vfs_ops.stat(dos_to_unix(fsp->fsp_name, False), &st) < 0) {
- DEBUG(0,("process_pending_change_notify_queue: Unable to stat directory %s. \
-Error was %s.\n", fsp->fsp_name, strerror(errno) ));
+ if(!create_directory_notify_hash( cnbp, &change_data)) {
+ DEBUG(0,("process_pending_change_notify_queue: Unable to create change data for \
+directory %s\n", cnbp->fsp->fsp_name ));
/*
* Remove the entry and return an error to the client.
*/
@@ -1356,13 +1629,12 @@ Error was %s.\n", fsp->fsp_name, strerror(errno) ));
continue;
}
- if(cnbp->modify_time != st.st_mtime ||
- cnbp->status_time != st.st_ctime) {
+ if(memcmp( (char *)&cnbp->change_data, (char *)&change_data, sizeof(change_data))) {
/*
* Remove the entry and return a change notify to the client.
*/
- DEBUG(5,("process_pending_change_notify_queue: directory name = %s changed\n",
- fsp->fsp_name ));
+ DEBUG(5,("process_pending_change_notify_queue: directory name = %s changed.\n",
+ cnbp->fsp->fsp_name ));
change_notify_reply_packet(cnbp->request_buf,0,NT_STATUS_NOTIFY_ENUM_DIR);
free((char *)ubi_slRemNext( &change_notify_queue, prev));
cnbp = (change_notify_buf *)(prev ? ubi_slNext(prev) : ubi_slFirst(&change_notify_queue));
@@ -1378,22 +1650,34 @@ Error was %s.\n", fsp->fsp_name, strerror(errno) ));
prev = cnbp;
cnbp = (change_notify_buf *)ubi_slNext(cnbp);
}
+
+ return (cnbp != NULL);
+}
+
+/****************************************************************************
+ Return true if there are pending change notifies.
+****************************************************************************/
+
+BOOL change_notifies_pending(void)
+{
+ change_notify_buf *cnbp = (change_notify_buf *)ubi_slFirst( &change_notify_queue );
+ return (cnbp != NULL);
}
/****************************************************************************
Reply to a notify change - queue the request and
don't allow a directory to be opened.
****************************************************************************/
+
static int call_nt_transact_notify_change(connection_struct *conn,
- char *inbuf, char *outbuf, int length,
+ char *inbuf, char *outbuf, int length,
int bufsize,
char **ppsetup,
- char **ppparams, char **ppdata)
+ char **ppparams, char **ppdata)
{
char *setup = *ppsetup;
files_struct *fsp;
change_notify_buf *cnbp;
- SMB_STRUCT_STAT st;
fsp = file_fsp(setup,4);
@@ -1414,28 +1698,22 @@ static int call_nt_transact_notify_change(connection_struct *conn,
*/
if((cnbp = (change_notify_buf *)malloc(sizeof(change_notify_buf))) == NULL) {
- DEBUG(0,("call_nt_transact_notify_change: Malloc fail (2) !\n" ));
+ DEBUG(0,("call_nt_transact_notify_change: malloc fail !\n" ));
return -1;
}
- /*
- * Store the current timestamp on the directory we are monitoring.
- */
+ memset((char *)cnbp, '\0', sizeof(change_notify_buf));
- if(fsp->conn->vfs_ops.stat(dos_to_unix(fsp->fsp_name, False), &st) < 0) {
- DEBUG(0,("call_nt_transact_notify_change: Unable to stat name = %s. \
-Error was %s\n", fsp->fsp_name, strerror(errno) ));
- free((char *)cnbp);
- return(UNIXERROR(ERRDOS,ERRbadfid));
- }
-
memcpy(cnbp->request_buf, inbuf, smb_size);
cnbp->fsp = fsp;
cnbp->conn = conn;
- cnbp->modify_time = st.st_mtime;
- cnbp->status_time = st.st_ctime;
-
cnbp->next_check_time = time(NULL) + lp_change_notify_timeout();
+ cnbp->flags = IVAL(setup, 0);
+
+ if(!create_directory_notify_hash( cnbp, &cnbp->change_data )) {
+ free((char *)cnbp);
+ return(UNIXERROR(ERRDOS,ERRbadfid));
+ }
/*
* Adding to the tail enables us to check only
@@ -1452,43 +1730,661 @@ name = %s\n", fsp->fsp_name ));
}
/****************************************************************************
+ Map unix perms to NT.
+****************************************************************************/
+
+static SEC_ACCESS map_unix_perms( int *pacl_type, mode_t perm, int r_mask, int w_mask, int x_mask, BOOL is_directory)
+{
+ SEC_ACCESS sa;
+ uint32 nt_mask = 0;
+
+ *pacl_type = SEC_ACE_TYPE_ACCESS_ALLOWED;
+
+ if((perm & (r_mask|w_mask|x_mask)) == (r_mask|w_mask|x_mask)) {
+ nt_mask = UNIX_ACCESS_RWX;
+ } else if((perm & (r_mask|w_mask|x_mask)) == 0) {
+ nt_mask = UNIX_ACCESS_NONE;
+ } else {
+ nt_mask |= (perm & r_mask) ? UNIX_ACCESS_R : 0;
+ if(is_directory)
+ nt_mask |= (perm & w_mask) ? UNIX_ACCESS_W : 0;
+ else
+ nt_mask |= (perm & w_mask) ? UNIX_ACCESS_W : 0;
+ nt_mask |= (perm & x_mask) ? UNIX_ACCESS_X : 0;
+ }
+ init_sec_access(&sa,nt_mask);
+ return sa;
+}
+
+/****************************************************************************
+ Reply to query a security descriptor from an fsp. If it succeeds it allocates
+ the space for the return elements and returns True.
+****************************************************************************/
+
+static size_t get_nt_acl(files_struct *fsp, SEC_DESC **ppdesc)
+{
+ extern DOM_SID global_sam_sid;
+ extern DOM_SID global_sid_World;
+ SMB_STRUCT_STAT sbuf;
+ SEC_ACE ace_list[6];
+ DOM_SID owner_sid;
+ DOM_SID group_sid;
+ size_t sec_desc_size;
+ SEC_ACL *psa = NULL;
+ SEC_ACCESS owner_access;
+ int owner_acl_type;
+ SEC_ACCESS group_access;
+ int grp_acl_type;
+ SEC_ACCESS other_access;
+ int other_acl_type;
+ int num_acls = 0;
+
+ *ppdesc = NULL;
+
+ if(!lp_nt_acl_support()) {
+ sid_copy( &owner_sid, &global_sid_World);
+ sid_copy( &group_sid, &global_sid_World);
+ } else {
+
+ if(fsp->is_directory || fsp->fd_ptr == NULL) {
+ if(dos_stat(fsp->fsp_name, &sbuf) != 0) {
+ return 0;
+ }
+ } else {
+ if(sys_fstat(fsp->fd_ptr->fd,&sbuf) != 0) {
+ return 0;
+ }
+ }
+
+ /*
+ * Get the owner, group and world SIDs.
+ */
+
+ sid_copy(&owner_sid, &global_sam_sid);
+ sid_copy(&group_sid, &global_sam_sid);
+ sid_append_rid(&owner_sid, pdb_uid_to_user_rid(sbuf.st_uid));
+ sid_append_rid(&group_sid, pdb_gid_to_group_rid(sbuf.st_gid));
+
+ /*
+ * Create the generic 3 element UNIX acl.
+ */
+
+ owner_access = map_unix_perms(&owner_acl_type, sbuf.st_mode,
+ S_IRUSR, S_IWUSR, S_IXUSR, fsp->is_directory);
+ group_access = map_unix_perms(&grp_acl_type, sbuf.st_mode,
+ S_IRGRP, S_IWGRP, S_IXGRP, fsp->is_directory);
+ other_access = map_unix_perms(&other_acl_type, sbuf.st_mode,
+ S_IROTH, S_IWOTH, S_IXOTH, fsp->is_directory);
+
+ if(owner_access.mask)
+ init_sec_ace(&ace_list[num_acls++], &owner_sid, owner_acl_type,
+ owner_access, 0);
+
+ if(group_access.mask)
+ init_sec_ace(&ace_list[num_acls++], &group_sid, grp_acl_type,
+ group_access, 0);
+
+ if(other_access.mask)
+ init_sec_ace(&ace_list[num_acls++], &global_sid_World, other_acl_type,
+ other_access, 0);
+
+ if(fsp->is_directory) {
+ /*
+ * For directory ACLs we also add in the inherited permissions
+ * ACE entries. These are the permissions a file would get when
+ * being created in the directory.
+ */
+ mode_t mode = unix_mode( fsp->conn, FILE_ATTRIBUTE_ARCHIVE);
+
+ owner_access = map_unix_perms(&owner_acl_type, mode,
+ S_IRUSR, S_IWUSR, S_IXUSR, fsp->is_directory);
+ group_access = map_unix_perms(&grp_acl_type, mode,
+ S_IRGRP, S_IWGRP, S_IXGRP, fsp->is_directory);
+ other_access = map_unix_perms(&other_acl_type, mode,
+ S_IROTH, S_IWOTH, S_IXOTH, fsp->is_directory);
+
+ if(owner_access.mask)
+ init_sec_ace(&ace_list[num_acls++], &owner_sid, owner_acl_type,
+ owner_access, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY);
+
+ if(group_access.mask)
+ init_sec_ace(&ace_list[num_acls++], &group_sid, grp_acl_type,
+ group_access, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY);
+
+ if(other_access.mask)
+ init_sec_ace(&ace_list[num_acls++], &global_sid_World, other_acl_type,
+ other_access, SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY);
+ }
+
+ if(num_acls)
+ if((psa = make_sec_acl( 3, num_acls, ace_list)) == NULL) {
+ DEBUG(0,("get_nt_acl: Unable to malloc space for acl.\n"));
+ return 0;
+ }
+ }
+
+ *ppdesc = make_standard_sec_desc( &owner_sid, &group_sid, psa, &sec_desc_size);
+
+ if(!*ppdesc) {
+ DEBUG(0,("get_nt_acl: Unable to malloc space for security descriptor.\n"));
+ sec_desc_size = 0;
+ }
+
+ free_sec_acl(&psa);
+
+ return sec_desc_size;
+}
+
+/****************************************************************************
Reply to query a security descriptor - currently this is not implemented (it
- is planned to be though).
+ is planned to be though). Right now it just returns the same thing NT would
+ when queried on a FAT filesystem. JRA.
****************************************************************************/
+
static int call_nt_transact_query_security_desc(connection_struct *conn,
- char *inbuf, char *outbuf,
- int length,
- int bufsize,
+ char *inbuf, char *outbuf,
+ int length, int bufsize,
char **ppsetup, char **ppparams, char **ppdata)
{
- static BOOL logged_message = False;
+ uint32 max_data_count = IVAL(inbuf,smb_nt_MaxDataCount);
+ char *params = *ppparams;
+ char *data = *ppdata;
+ prs_struct pd;
+ SEC_DESC *psd;
+ size_t sec_desc_size;
- if(!logged_message) {
- DEBUG(0,("call_nt_transact_query_security_desc: Currently not implemented.\n"));
- logged_message = True; /* Only print this once... */
+ files_struct *fsp = file_fsp(params,0);
+
+ if(!fsp)
+ return(ERROR(ERRDOS,ERRbadfid));
+
+ DEBUG(3,("call_nt_transact_query_security_desc: file = %s\n", fsp->fsp_name ));
+
+ params = *ppparams = Realloc(*ppparams, 4);
+ if(params == NULL)
+ return(ERROR(ERRDOS,ERRnomem));
+
+ /*
+ * Get the permissions to return.
+ */
+
+ if((sec_desc_size = get_nt_acl(fsp, &psd)) == 0)
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+
+ DEBUG(3,("call_nt_transact_query_security_desc: sec_desc_size = %d.\n",(int)sec_desc_size));
+
+ SIVAL(params,0,(uint32)sec_desc_size);
+
+ if(max_data_count < sec_desc_size) {
+
+ free_sec_desc(&psd);
+
+ send_nt_replies(inbuf, outbuf, bufsize, 0xC0000000|NT_STATUS_BUFFER_TOO_SMALL,
+ params, 4, *ppdata, 0);
+ return -1;
}
- return(ERROR(ERRSRV,ERRnosupport));
+ /*
+ * Allocate the data we will point this at.
+ */
+
+ data = *ppdata = Realloc(*ppdata, sec_desc_size);
+ if(data == NULL) {
+ free_sec_desc(&psd);
+ return(ERROR(ERRDOS,ERRnomem));
+ }
+
+ memset(data, '\0', sec_desc_size);
+
+ /*
+ * Init the parse struct we will marshall into.
+ */
+
+ prs_init(&pd, 0, 4, MARSHALL);
+
+ /*
+ * Setup the prs_struct to point at the memory we just
+ * allocated.
+ */
+
+ prs_give_memory( &pd, data, (uint32)sec_desc_size, False);
+
+ /*
+ * Finally, linearize into the outgoing buffer.
+ */
+
+ if(!sec_io_desc( "sd data", &psd, &pd, 1)) {
+ free_sec_desc(&psd);
+ DEBUG(0,("call_nt_transact_query_security_desc: Error in marshalling \
+security descriptor.\n"));
+ /*
+ * Return access denied for want of a better error message..
+ */
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ /*
+ * Now we can delete the security descriptor.
+ */
+
+ free_sec_desc(&psd);
+
+ send_nt_replies(inbuf, outbuf, bufsize, 0, params, 4, data, (int)sec_desc_size);
+ return -1;
}
-
+
+/****************************************************************************
+ Validate a SID.
+****************************************************************************/
+
+static BOOL validate_unix_sid( DOM_SID *psid, uint32 *prid, DOM_SID *sd_sid)
+{
+ extern DOM_SID global_sam_sid;
+ DOM_SID sid;
+
+ if(!sd_sid) {
+ DEBUG(5,("validate_unix_sid: sid missing.\n"));
+ return False;
+ }
+
+ sid_copy(psid, sd_sid);
+ sid_copy(&sid, sd_sid);
+
+ if(!sid_split_rid(&sid, prid)) {
+ DEBUG(5,("validate_unix_sid: cannot get RID from sid.\n"));
+ return False;
+ }
+
+ if(!sid_equal( &sid, &global_sam_sid)) {
+ DEBUG(5,("validate_unix_sid: sid is not ours.\n"));
+ return False;
+ }
+
+ return True;
+}
+
/****************************************************************************
- Reply to set a security descriptor - currently this is not implemented (it
- is planned to be though).
+ Map NT perms to UNIX.
****************************************************************************/
+
+#define FILE_SPECIFIC_READ_BITS (FILE_READ_DATA|FILE_READ_EA|FILE_READ_ATTRIBUTES)
+#define FILE_SPECIFIC_WRITE_BITS (FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_WRITE_EA|FILE_WRITE_ATTRIBUTES)
+#define FILE_SPECIFIC_EXECUTE_BITS (FILE_EXECUTE)
+
+static mode_t map_nt_perms( SEC_ACCESS sec_access, int type)
+{
+ mode_t mode = 0;
+
+ switch(type) {
+ case S_IRUSR:
+ if(sec_access.mask & GENERIC_ALL_ACCESS)
+ mode = S_IRUSR|S_IWUSR|S_IXUSR;
+ else {
+ mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRUSR : 0;
+ mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWUSR : 0;
+ mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXUSR : 0;
+ }
+ break;
+ case S_IRGRP:
+ if(sec_access.mask & GENERIC_ALL_ACCESS)
+ mode = S_IRGRP|S_IWGRP|S_IXGRP;
+ else {
+ mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRGRP : 0;
+ mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWGRP : 0;
+ mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXGRP : 0;
+ }
+ break;
+ case S_IROTH:
+ if(sec_access.mask & GENERIC_ALL_ACCESS)
+ mode = S_IROTH|S_IWOTH|S_IXOTH;
+ else {
+ mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IROTH : 0;
+ mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWOTH : 0;
+ mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXOTH : 0;
+ }
+ break;
+ }
+
+ return mode;
+}
+
+/****************************************************************************
+ Unpack a SEC_DESC into a owner, group and set of UNIX permissions.
+****************************************************************************/
+
+static BOOL unpack_nt_permissions(uid_t *puser, gid_t *pgrp, mode_t *pmode, uint32 security_info_sent,
+ SEC_DESC *psd, BOOL is_directory)
+{
+ extern DOM_SID global_sid_World;
+ DOM_SID owner_sid;
+ DOM_SID grp_sid;
+ uint32 owner_rid;
+ uint32 grp_rid;
+ SEC_ACL *dacl = psd->dacl;
+ int i;
+
+ *pmode = 0;
+ *puser = (uid_t)-1;
+ *pgrp = (gid_t)-1;
+
+ if(security_info_sent == 0) {
+ DEBUG(0,("unpack_unix_permissions: no security info sent !\n"));
+ return False;
+ }
+
+ /*
+ * Validate the owner and group SID's.
+ */
+
+ memset(&owner_sid, '\0', sizeof(owner_sid));
+ memset(&grp_sid, '\0', sizeof(grp_sid));
+
+ DEBUG(5,("unpack_unix_permissions: validating owner_sid.\n"));
+
+ /*
+ * Don't immediately fail if the owner sid cannot be validated.
+ * This may be a group chown only set.
+ */
+
+ if(!validate_unix_sid( &owner_sid, &owner_rid, psd->owner_sid))
+ DEBUG(3,("unpack_unix_permissions: unable to validate owner sid.\n"));
+ else if(security_info_sent & OWNER_SECURITY_INFORMATION)
+ *puser = pdb_user_rid_to_uid(owner_rid);
+
+ /*
+ * Don't immediately fail if the group sid cannot be validated.
+ * This may be an owner chown only set.
+ */
+
+ if(!validate_unix_sid( &grp_sid, &grp_rid, psd->grp_sid))
+ DEBUG(3,("unpack_unix_permissions: unable to validate group sid.\n"));
+ else if(security_info_sent & GROUP_SECURITY_INFORMATION)
+ *pgrp = pdb_user_rid_to_gid(grp_rid);
+
+ /*
+ * If no DACL then this is a chown only security descriptor.
+ */
+
+ if(!(security_info_sent & DACL_SECURITY_INFORMATION) || !dacl) {
+ *pmode = 0;
+ return True;
+ }
+
+ /*
+ * Now go through the DACL and ensure that
+ * any owner/group sids match.
+ */
+
+ for(i = 0; i < dacl->num_aces; i++) {
+ DOM_SID ace_sid;
+ SEC_ACE *psa = &dacl->ace_list[i];
+
+ if((psa->type != SEC_ACE_TYPE_ACCESS_ALLOWED) &&
+ (psa->type != SEC_ACE_TYPE_ACCESS_DENIED)) {
+ DEBUG(3,("unpack_unix_permissions: unable to set anything but an ALLOW or DENY ACE.\n"));
+ return False;
+ }
+
+ /*
+ * Ignore or remove bits we don't care about on a directory ACE.
+ */
+
+ if(is_directory) {
+ if(psa->flags & SEC_ACE_FLAG_INHERIT_ONLY) {
+ DEBUG(3,("unpack_unix_permissions: ignoring inherit only ACE.\n"));
+ continue;
+ }
+
+ psa->flags &= ~(SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT);
+ }
+
+ if(psa->flags != 0) {
+ DEBUG(1,("unpack_unix_permissions: unable to set ACE flags (%x).\n",
+ (unsigned int)psa->flags));
+ return False;
+ }
+
+ /*
+ * The security mask may be UNIX_ACCESS_NONE which should map into
+ * no permissions (we overload the WRITE_OWNER bit for this) or it
+ * should be one of the ALL/EXECUTE/READ/WRITE bits. Arrange for this
+ * to be so. Any other bits override the UNIX_ACCESS_NONE bit.
+ */
+
+ psa->info.mask &= (GENERIC_ALL_ACCESS|GENERIC_EXECUTE_ACCESS|GENERIC_WRITE_ACCESS|
+ GENERIC_READ_ACCESS|UNIX_ACCESS_NONE|FILE_ALL_ATTRIBUTES);
+
+ if(psa->info.mask != UNIX_ACCESS_NONE)
+ psa->info.mask &= ~UNIX_ACCESS_NONE;
+
+ sid_copy(&ace_sid, &psa->sid);
+
+ if(sid_equal(&ace_sid, &owner_sid)) {
+ /*
+ * Map the desired permissions into owner perms.
+ */
+
+ if(psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED)
+ *pmode |= map_nt_perms( psa->info, S_IRUSR);
+ else
+ *pmode &= ~(map_nt_perms( psa->info, S_IRUSR));
+
+ } else if( sid_equal(&ace_sid, &grp_sid)) {
+ /*
+ * Map the desired permissions into group perms.
+ */
+
+ if(psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED)
+ *pmode |= map_nt_perms( psa->info, S_IRGRP);
+ else
+ *pmode &= ~(map_nt_perms( psa->info, S_IRGRP));
+
+ } else if( sid_equal(&ace_sid, &global_sid_World)) {
+ /*
+ * Map the desired permissions into other perms.
+ */
+
+ if(psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED)
+ *pmode |= map_nt_perms( psa->info, S_IROTH);
+ else
+ *pmode &= ~(map_nt_perms( psa->info, S_IROTH));
+
+ } else {
+ DEBUG(0,("unpack_unix_permissions: unknown SID used in ACL.\n"));
+ return False;
+ }
+ }
+
+ return True;
+}
+
+/****************************************************************************
+ Reply to set a security descriptor. Map to UNIX perms.
+****************************************************************************/
+
static int call_nt_transact_set_security_desc(connection_struct *conn,
- char *inbuf, char *outbuf,
- int length,
- int bufsize,
- char **ppsetup,
- char **ppparams, char **ppdata)
+ char *inbuf, char *outbuf, int length,
+ int bufsize, char **ppsetup,
+ char **ppparams, char **ppdata)
{
- static BOOL logged_message = False;
+ uint32 total_parameter_count = IVAL(inbuf, smb_nts_TotalParameterCount);
+ char *params= *ppparams;
+ char *data = *ppdata;
+ prs_struct pd;
+ SEC_DESC *psd = NULL;
+ uint32 total_data_count = (uint32)IVAL(inbuf, smb_nts_TotalDataCount);
+ uid_t user = (uid_t)-1;
+ gid_t grp = (gid_t)-1;
+ mode_t perms = 0;
+ SMB_STRUCT_STAT sbuf;
+ files_struct *fsp = NULL;
+ uint32 security_info_sent = 0;
+ BOOL got_dacl = False;
- if(!logged_message) {
- DEBUG(0,("call_nt_transact_set_security_desc: Currently not implemented.\n"));
- logged_message = True; /* Only print this once... */
+ if(!lp_nt_acl_support())
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+
+ if(total_parameter_count < 8)
+ return(ERROR(ERRDOS,ERRbadfunc));
+
+ if((fsp = file_fsp(params,0)) == NULL)
+ return(ERROR(ERRDOS,ERRbadfid));
+
+ security_info_sent = IVAL(params,4);
+
+ DEBUG(3,("call_nt_transact_set_security_desc: file = %s, sent 0x%x\n", fsp->fsp_name,
+ (unsigned int)security_info_sent ));
+
+ /*
+ * Init the parse struct we will unmarshall from.
+ */
+
+ prs_init(&pd, 0, 4, UNMARSHALL);
+
+ /*
+ * Setup the prs_struct to point at the memory we just
+ * allocated.
+ */
+
+ prs_give_memory( &pd, data, total_data_count, False);
+
+ /*
+ * Finally, unmarshall from the data buffer.
+ */
+
+ if(!sec_io_desc( "sd data", &psd, &pd, 1)) {
+ free_sec_desc(&psd);
+ DEBUG(0,("call_nt_transact_set_security_desc: Error in unmarshalling \
+security descriptor.\n"));
+ /*
+ * Return access denied for want of a better error message..
+ */
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
}
- return(ERROR(ERRSRV,ERRnosupport));
+
+ /*
+ * Unpack the user/group/world id's and permissions.
+ */
+
+ if(!unpack_nt_permissions( &user, &grp, &perms, security_info_sent, psd, fsp->is_directory)) {
+ free_sec_desc(&psd);
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ if (psd->dacl != NULL)
+ got_dacl = True;
+
+ free_sec_desc(&psd);
+
+ /*
+ * Get the current state of the file.
+ */
+
+ if(fsp->is_directory) {
+ if(dos_stat(fsp->fsp_name, &sbuf) != 0) {
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+ } else {
+
+ int ret;
+
+ if(fsp->fd_ptr == NULL)
+ ret = dos_stat(fsp->fsp_name, &sbuf);
+ else
+ ret = sys_fstat(fsp->fd_ptr->fd,&sbuf);
+
+ if(ret != 0) {
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+ }
+
+ /*
+ * Do we need to chown ?
+ */
+
+ if((user != (uid_t)-1 || grp != (uid_t)-1) && (sbuf.st_uid != user || sbuf.st_gid != grp)) {
+
+ DEBUG(3,("call_nt_transact_set_security_desc: chown %s. uid = %u, gid = %u.\n",
+ fsp->fsp_name, (unsigned int)user, (unsigned int)grp ));
+
+ if(dos_chown( fsp->fsp_name, user, grp) == -1) {
+ DEBUG(3,("call_nt_transact_set_security_desc: chown %s, %u, %u failed. Error = %s.\n",
+ fsp->fsp_name, (unsigned int)user, (unsigned int)grp, strerror(errno) ));
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+
+ /*
+ * Recheck the current state of the file, which may have changed.
+ * (suid/sgid bits, for instance)
+ */
+
+ if(fsp->is_directory) {
+ if(dos_stat(fsp->fsp_name, &sbuf) != 0) {
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+ } else {
+
+ int ret;
+
+ if(fsp->fd_ptr == NULL)
+ ret = dos_stat(fsp->fsp_name, &sbuf);
+ else
+ ret = sys_fstat(fsp->fd_ptr->fd,&sbuf);
+
+ if(ret != 0)
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+ }
+
+ /*
+ * Only change security if we got a DACL.
+ */
+
+ if((security_info_sent & DACL_SECURITY_INFORMATION) && got_dacl) {
+
+ /*
+ * Check to see if we need to change anything.
+ * Enforce limits on modified bits *only*. Don't enforce masks
+ * on bits not changed by the user.
+ */
+
+ if(fsp->is_directory) {
+
+ perms &= (lp_dir_security_mask(SNUM(conn)) | sbuf.st_mode);
+ perms |= (lp_force_dir_security_mode(SNUM(conn)) & ( perms ^ sbuf.st_mode ));
+
+ } else {
+
+ perms &= (lp_security_mask(SNUM(conn)) | sbuf.st_mode);
+ perms |= (lp_force_security_mode(SNUM(conn)) & ( perms ^ sbuf.st_mode ));
+
+ }
+
+ /*
+ * Preserve special bits.
+ */
+
+ perms |= (sbuf.st_mode & ~0777);
+
+ /*
+ * Do we need to chmod ?
+ */
+
+ if(sbuf.st_mode != perms) {
+
+ DEBUG(3,("call_nt_transact_set_security_desc: chmod %s. perms = 0%o.\n",
+ fsp->fsp_name, (unsigned int)perms ));
+
+ if(dos_chmod( fsp->fsp_name, perms) == -1) {
+ DEBUG(3,("call_nt_transact_set_security_desc: chmod %s, 0%o failed. Error = %s.\n",
+ fsp->fsp_name, (unsigned int)perms, strerror(errno) ));
+ return(UNIXERROR(ERRDOS,ERRnoaccess));
+ }
+ }
+ }
+
+ send_nt_replies(inbuf, outbuf, bufsize, 0, NULL, 0, NULL, 0);
+ return -1;
}
/****************************************************************************
@@ -1675,7 +2571,6 @@ due to being in oplock break state.\n" ));
length, bufsize,
&setup, &params, &data);
break;
-
default:
/* Error in request */
DEBUG(0,("reply_nttrans: Unknown request %d in nttrans call\n", function_code));
generated by cgit (git 2.34.1) at 2024-11-19 16:20:49 +0000