mirror of
https://github.com/samba-team/samba.git
synced 2024-12-23 17:34:34 +03:00
16fca542d7
Guenther
(This used to be commit aae4d91e72
)
3378 lines
79 KiB
C
3378 lines
79 KiB
C
/*
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Unix SMB/CIFS implementation.
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Samba utility functions
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Copyright (C) Andrew Tridgell 1992-1998
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Copyright (C) Jeremy Allison 2001-2007
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Copyright (C) Simo Sorce 2001
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Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
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Copyright (C) James Peach 2006
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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extern char *global_clobber_region_function;
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extern unsigned int global_clobber_region_line;
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/* Max allowable allococation - 256mb - 0x10000000 */
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#define MAX_ALLOC_SIZE (1024*1024*256)
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#if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
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#ifdef WITH_NISPLUS_HOME
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#ifdef BROKEN_NISPLUS_INCLUDE_FILES
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/*
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* The following lines are needed due to buggy include files
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* in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
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* also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
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* Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
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* an enum in /usr/include/rpcsvc/nis.h.
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*/
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#if defined(GROUP)
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#undef GROUP
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#endif
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#if defined(GROUP_OBJ)
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#undef GROUP_OBJ
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#endif
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#endif /* BROKEN_NISPLUS_INCLUDE_FILES */
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#include <rpcsvc/nis.h>
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#endif /* WITH_NISPLUS_HOME */
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#endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
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enum protocol_types Protocol = PROTOCOL_COREPLUS;
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/* this is used by the chaining code */
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int chain_size = 0;
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int trans_num = 0;
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static enum remote_arch_types ra_type = RA_UNKNOWN;
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/***********************************************************************
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Definitions for all names.
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***********************************************************************/
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static char *smb_myname;
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static char *smb_myworkgroup;
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static char *smb_scope;
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static int smb_num_netbios_names;
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static char **smb_my_netbios_names;
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/***********************************************************************
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Allocate and set myname. Ensure upper case.
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***********************************************************************/
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bool set_global_myname(const char *myname)
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{
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SAFE_FREE(smb_myname);
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smb_myname = SMB_STRDUP(myname);
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if (!smb_myname)
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return False;
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strupper_m(smb_myname);
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return True;
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}
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const char *global_myname(void)
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{
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return smb_myname;
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}
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/***********************************************************************
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Allocate and set myworkgroup. Ensure upper case.
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***********************************************************************/
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bool set_global_myworkgroup(const char *myworkgroup)
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{
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SAFE_FREE(smb_myworkgroup);
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smb_myworkgroup = SMB_STRDUP(myworkgroup);
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if (!smb_myworkgroup)
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return False;
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strupper_m(smb_myworkgroup);
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return True;
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}
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const char *lp_workgroup(void)
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{
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return smb_myworkgroup;
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}
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/***********************************************************************
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Allocate and set scope. Ensure upper case.
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***********************************************************************/
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bool set_global_scope(const char *scope)
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{
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SAFE_FREE(smb_scope);
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smb_scope = SMB_STRDUP(scope);
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if (!smb_scope)
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return False;
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strupper_m(smb_scope);
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return True;
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}
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/*********************************************************************
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Ensure scope is never null string.
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*********************************************************************/
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const char *global_scope(void)
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{
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if (!smb_scope)
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set_global_scope("");
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return smb_scope;
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}
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static void free_netbios_names_array(void)
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{
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int i;
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for (i = 0; i < smb_num_netbios_names; i++)
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SAFE_FREE(smb_my_netbios_names[i]);
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SAFE_FREE(smb_my_netbios_names);
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smb_num_netbios_names = 0;
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}
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static bool allocate_my_netbios_names_array(size_t number)
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{
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free_netbios_names_array();
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smb_num_netbios_names = number + 1;
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smb_my_netbios_names = SMB_MALLOC_ARRAY( char *, smb_num_netbios_names );
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if (!smb_my_netbios_names)
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return False;
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memset(smb_my_netbios_names, '\0', sizeof(char *) * smb_num_netbios_names);
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return True;
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}
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static bool set_my_netbios_names(const char *name, int i)
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{
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SAFE_FREE(smb_my_netbios_names[i]);
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smb_my_netbios_names[i] = SMB_STRDUP(name);
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if (!smb_my_netbios_names[i])
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return False;
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strupper_m(smb_my_netbios_names[i]);
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return True;
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}
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/***********************************************************************
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Free memory allocated to global objects
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***********************************************************************/
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void gfree_names(void)
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{
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SAFE_FREE( smb_myname );
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SAFE_FREE( smb_myworkgroup );
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SAFE_FREE( smb_scope );
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free_netbios_names_array();
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free_local_machine_name();
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}
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void gfree_all( void )
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{
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gfree_names();
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gfree_loadparm();
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gfree_case_tables();
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gfree_debugsyms();
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gfree_charcnv();
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gfree_interfaces();
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/* release the talloc null_context memory last */
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talloc_disable_null_tracking();
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}
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const char *my_netbios_names(int i)
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{
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return smb_my_netbios_names[i];
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}
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bool set_netbios_aliases(const char **str_array)
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{
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size_t namecount;
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/* Work out the max number of netbios aliases that we have */
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for( namecount=0; str_array && (str_array[namecount] != NULL); namecount++ )
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;
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if ( global_myname() && *global_myname())
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namecount++;
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/* Allocate space for the netbios aliases */
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if (!allocate_my_netbios_names_array(namecount))
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return False;
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/* Use the global_myname string first */
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namecount=0;
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if ( global_myname() && *global_myname()) {
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set_my_netbios_names( global_myname(), namecount );
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namecount++;
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}
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if (str_array) {
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size_t i;
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for ( i = 0; str_array[i] != NULL; i++) {
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size_t n;
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bool duplicate = False;
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/* Look for duplicates */
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for( n=0; n<namecount; n++ ) {
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if( strequal( str_array[i], my_netbios_names(n) ) ) {
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duplicate = True;
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break;
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}
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}
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if (!duplicate) {
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if (!set_my_netbios_names(str_array[i], namecount))
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return False;
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namecount++;
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}
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}
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}
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return True;
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}
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/****************************************************************************
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Common name initialization code.
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****************************************************************************/
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bool init_names(void)
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{
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int n;
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if (global_myname() == NULL || *global_myname() == '\0') {
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if (!set_global_myname(myhostname())) {
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DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
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return False;
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}
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}
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if (!set_netbios_aliases(lp_netbios_aliases())) {
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DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
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return False;
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}
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set_local_machine_name(global_myname(),false);
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DEBUG( 5, ("Netbios name list:-\n") );
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for( n=0; my_netbios_names(n); n++ ) {
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DEBUGADD( 5, ("my_netbios_names[%d]=\"%s\"\n",
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n, my_netbios_names(n) ) );
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}
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return( True );
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}
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/**************************************************************************n
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Code to cope with username/password auth options from the commandline.
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Used mainly in client tools.
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****************************************************************************/
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static struct user_auth_info cmdline_auth_info = {
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NULL, /* username */
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NULL, /* password */
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false, /* got_pass */
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false, /* use_kerberos */
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Undefined, /* signing state */
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false /* smb_encrypt */
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};
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const char *get_cmdline_auth_info_username(void)
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{
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if (!cmdline_auth_info.username) {
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return "";
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}
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return cmdline_auth_info.username;
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}
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void set_cmdline_auth_info_username(const char *username)
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{
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SAFE_FREE(cmdline_auth_info.username);
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cmdline_auth_info.username = SMB_STRDUP(username);
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if (!cmdline_auth_info.username) {
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exit(ENOMEM);
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}
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}
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const char *get_cmdline_auth_info_password(void)
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{
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if (!cmdline_auth_info.password) {
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return "";
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}
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return cmdline_auth_info.password;
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}
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void set_cmdline_auth_info_password(const char *password)
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{
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SAFE_FREE(cmdline_auth_info.password);
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cmdline_auth_info.password = SMB_STRDUP(password);
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if (!cmdline_auth_info.password) {
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exit(ENOMEM);
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}
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cmdline_auth_info.got_pass = true;
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}
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bool set_cmdline_auth_info_signing_state(const char *arg)
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{
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cmdline_auth_info.signing_state = -1;
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if (strequal(arg, "off") || strequal(arg, "no") ||
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strequal(arg, "false")) {
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cmdline_auth_info.signing_state = false;
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} else if (strequal(arg, "on") || strequal(arg, "yes") ||
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strequal(arg, "true") || strequal(arg, "auto")) {
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cmdline_auth_info.signing_state = true;
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} else if (strequal(arg, "force") || strequal(arg, "required") ||
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strequal(arg, "forced")) {
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cmdline_auth_info.signing_state = Required;
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} else {
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return false;
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}
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return true;
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}
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int get_cmdline_auth_info_signing_state(void)
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{
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return cmdline_auth_info.signing_state;
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}
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bool get_cmdline_auth_info_use_kerberos(void)
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{
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return cmdline_auth_info.use_kerberos;
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}
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/* This should only be used by lib/popt_common.c JRA */
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void set_cmdline_auth_info_use_krb5_ticket(void)
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{
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cmdline_auth_info.use_kerberos = true;
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cmdline_auth_info.got_pass = true;
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}
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/* This should only be used by lib/popt_common.c JRA */
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void set_cmdline_auth_info_smb_encrypt(void)
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{
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cmdline_auth_info.smb_encrypt = true;
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}
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bool get_cmdline_auth_info_got_pass(void)
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{
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return cmdline_auth_info.got_pass;
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}
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bool get_cmdline_auth_info_smb_encrypt(void)
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{
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return cmdline_auth_info.smb_encrypt;
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}
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bool get_cmdline_auth_info_copy(struct user_auth_info *info)
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{
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*info = cmdline_auth_info;
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/* Now re-alloc the strings. */
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info->username = SMB_STRDUP(get_cmdline_auth_info_username());
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info->password = SMB_STRDUP(get_cmdline_auth_info_password());
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if (!info->username || !info->password) {
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return false;
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}
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return true;
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}
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/**************************************************************************n
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Find a suitable temporary directory. The result should be copied immediately
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as it may be overwritten by a subsequent call.
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****************************************************************************/
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const char *tmpdir(void)
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{
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char *p;
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if ((p = getenv("TMPDIR")))
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return p;
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return "/tmp";
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}
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/****************************************************************************
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Add a gid to an array of gids if it's not already there.
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****************************************************************************/
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bool add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid,
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gid_t **gids, size_t *num_gids)
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{
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int i;
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if ((*num_gids != 0) && (*gids == NULL)) {
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/*
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* A former call to this routine has failed to allocate memory
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*/
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return False;
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}
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for (i=0; i<*num_gids; i++) {
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if ((*gids)[i] == gid) {
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return True;
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}
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}
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*gids = TALLOC_REALLOC_ARRAY(mem_ctx, *gids, gid_t, *num_gids+1);
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if (*gids == NULL) {
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*num_gids = 0;
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return False;
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}
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(*gids)[*num_gids] = gid;
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*num_gids += 1;
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return True;
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}
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/****************************************************************************
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Like atoi but gets the value up to the separator character.
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****************************************************************************/
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static const char *Atoic(const char *p, int *n, const char *c)
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{
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if (!isdigit((int)*p)) {
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DEBUG(5, ("Atoic: malformed number\n"));
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return NULL;
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}
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(*n) = atoi(p);
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while ((*p) && isdigit((int)*p))
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p++;
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if (strchr_m(c, *p) == NULL) {
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DEBUG(5, ("Atoic: no separator characters (%s) not found\n", c));
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return NULL;
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}
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return p;
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}
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/*************************************************************************
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Reads a list of numbers.
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*************************************************************************/
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const char *get_numlist(const char *p, uint32 **num, int *count)
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{
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int val;
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if (num == NULL || count == NULL)
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return NULL;
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(*count) = 0;
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(*num ) = NULL;
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while ((p = Atoic(p, &val, ":,")) != NULL && (*p) != ':') {
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*num = SMB_REALLOC_ARRAY((*num), uint32, (*count)+1);
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if (!(*num)) {
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return NULL;
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}
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(*num)[(*count)] = val;
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(*count)++;
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p++;
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}
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return p;
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}
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/*******************************************************************
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Check if a file exists - call vfs_file_exist for samba files.
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********************************************************************/
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bool file_exist(const char *fname,SMB_STRUCT_STAT *sbuf)
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{
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SMB_STRUCT_STAT st;
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if (!sbuf)
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sbuf = &st;
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if (sys_stat(fname,sbuf) != 0)
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return(False);
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return((S_ISREG(sbuf->st_mode)) || (S_ISFIFO(sbuf->st_mode)));
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}
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/*******************************************************************
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|
Check if a unix domain socket exists - call vfs_file_exist for samba files.
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********************************************************************/
|
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bool socket_exist(const char *fname)
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{
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SMB_STRUCT_STAT st;
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if (sys_stat(fname,&st) != 0)
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return(False);
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return S_ISSOCK(st.st_mode);
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}
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|
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/*******************************************************************
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|
Check a files mod time.
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********************************************************************/
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time_t file_modtime(const char *fname)
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{
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SMB_STRUCT_STAT st;
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if (sys_stat(fname,&st) != 0)
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return(0);
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return(st.st_mtime);
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}
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|
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/*******************************************************************
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|
Check if a directory exists.
|
|
********************************************************************/
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bool directory_exist(char *dname,SMB_STRUCT_STAT *st)
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{
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SMB_STRUCT_STAT st2;
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bool ret;
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|
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if (!st)
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st = &st2;
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if (sys_stat(dname,st) != 0)
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return(False);
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ret = S_ISDIR(st->st_mode);
|
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if(!ret)
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errno = ENOTDIR;
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return ret;
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}
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|
|
/*******************************************************************
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|
Returns the size in bytes of the named file.
|
|
********************************************************************/
|
|
|
|
SMB_OFF_T get_file_size(char *file_name)
|
|
{
|
|
SMB_STRUCT_STAT buf;
|
|
buf.st_size = 0;
|
|
if(sys_stat(file_name,&buf) != 0)
|
|
return (SMB_OFF_T)-1;
|
|
return(buf.st_size);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Return a string representing an attribute for a file.
|
|
********************************************************************/
|
|
|
|
char *attrib_string(uint16 mode)
|
|
{
|
|
fstring attrstr;
|
|
|
|
attrstr[0] = 0;
|
|
|
|
if (mode & aVOLID) fstrcat(attrstr,"V");
|
|
if (mode & aDIR) fstrcat(attrstr,"D");
|
|
if (mode & aARCH) fstrcat(attrstr,"A");
|
|
if (mode & aHIDDEN) fstrcat(attrstr,"H");
|
|
if (mode & aSYSTEM) fstrcat(attrstr,"S");
|
|
if (mode & aRONLY) fstrcat(attrstr,"R");
|
|
|
|
return talloc_strdup(talloc_tos(), attrstr);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Show a smb message structure.
|
|
********************************************************************/
|
|
|
|
void show_msg(char *buf)
|
|
{
|
|
int i;
|
|
int bcc=0;
|
|
|
|
if (!DEBUGLVL(5))
|
|
return;
|
|
|
|
DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
|
|
smb_len(buf),
|
|
(int)CVAL(buf,smb_com),
|
|
(int)CVAL(buf,smb_rcls),
|
|
(int)CVAL(buf,smb_reh),
|
|
(int)SVAL(buf,smb_err),
|
|
(int)CVAL(buf,smb_flg),
|
|
(int)SVAL(buf,smb_flg2)));
|
|
DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
|
|
(int)SVAL(buf,smb_tid),
|
|
(int)SVAL(buf,smb_pid),
|
|
(int)SVAL(buf,smb_uid),
|
|
(int)SVAL(buf,smb_mid)));
|
|
DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf,smb_wct)));
|
|
|
|
for (i=0;i<(int)CVAL(buf,smb_wct);i++)
|
|
DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i,
|
|
SVAL(buf,smb_vwv+2*i),SVAL(buf,smb_vwv+2*i)));
|
|
|
|
bcc = (int)SVAL(buf,smb_vwv+2*(CVAL(buf,smb_wct)));
|
|
|
|
DEBUGADD(5,("smb_bcc=%d\n",bcc));
|
|
|
|
if (DEBUGLEVEL < 10)
|
|
return;
|
|
|
|
if (DEBUGLEVEL < 50)
|
|
bcc = MIN(bcc, 512);
|
|
|
|
dump_data(10, (uint8 *)smb_buf(buf), bcc);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Set the length and marker of an encrypted smb packet.
|
|
********************************************************************/
|
|
|
|
void smb_set_enclen(char *buf,int len,uint16 enc_ctx_num)
|
|
{
|
|
_smb_setlen(buf,len);
|
|
|
|
SCVAL(buf,4,0xFF);
|
|
SCVAL(buf,5,'E');
|
|
SSVAL(buf,6,enc_ctx_num);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Set the length and marker of an smb packet.
|
|
********************************************************************/
|
|
|
|
void smb_setlen(char *buf,int len)
|
|
{
|
|
_smb_setlen(buf,len);
|
|
|
|
SCVAL(buf,4,0xFF);
|
|
SCVAL(buf,5,'S');
|
|
SCVAL(buf,6,'M');
|
|
SCVAL(buf,7,'B');
|
|
}
|
|
|
|
/*******************************************************************
|
|
Setup only the byte count for a smb message.
|
|
********************************************************************/
|
|
|
|
int set_message_bcc(char *buf,int num_bytes)
|
|
{
|
|
int num_words = CVAL(buf,smb_wct);
|
|
SSVAL(buf,smb_vwv + num_words*SIZEOFWORD,num_bytes);
|
|
_smb_setlen(buf,smb_size + num_words*2 + num_bytes - 4);
|
|
return (smb_size + num_words*2 + num_bytes);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
|
|
Return the bytes added
|
|
********************************************************************/
|
|
|
|
ssize_t message_push_blob(uint8 **outbuf, DATA_BLOB blob)
|
|
{
|
|
size_t newlen = smb_len(*outbuf) + 4 + blob.length;
|
|
uint8 *tmp;
|
|
|
|
if (!(tmp = TALLOC_REALLOC_ARRAY(NULL, *outbuf, uint8, newlen))) {
|
|
DEBUG(0, ("talloc failed\n"));
|
|
return -1;
|
|
}
|
|
*outbuf = tmp;
|
|
|
|
memcpy(tmp + smb_len(tmp) + 4, blob.data, blob.length);
|
|
set_message_bcc((char *)tmp, smb_buflen(tmp) + blob.length);
|
|
return blob.length;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Reduce a file name, removing .. elements.
|
|
********************************************************************/
|
|
|
|
static char *dos_clean_name(TALLOC_CTX *ctx, const char *s)
|
|
{
|
|
char *p = NULL;
|
|
char *str = NULL;
|
|
|
|
DEBUG(3,("dos_clean_name [%s]\n",s));
|
|
|
|
/* remove any double slashes */
|
|
str = talloc_all_string_sub(ctx, s, "\\\\", "\\");
|
|
if (!str) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Remove leading .\\ characters */
|
|
if(strncmp(str, ".\\", 2) == 0) {
|
|
trim_string(str, ".\\", NULL);
|
|
if(*str == 0) {
|
|
str = talloc_strdup(ctx, ".\\");
|
|
if (!str) {
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
while ((p = strstr_m(str,"\\..\\")) != NULL) {
|
|
char *s1;
|
|
|
|
*p = 0;
|
|
s1 = p+3;
|
|
|
|
if ((p=strrchr_m(str,'\\')) != NULL) {
|
|
*p = 0;
|
|
} else {
|
|
*str = 0;
|
|
}
|
|
str = talloc_asprintf(ctx,
|
|
"%s%s",
|
|
str,
|
|
s1);
|
|
if (!str) {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
trim_string(str,NULL,"\\..");
|
|
return talloc_all_string_sub(ctx, str, "\\.\\", "\\");
|
|
}
|
|
|
|
/*******************************************************************
|
|
Reduce a file name, removing .. elements.
|
|
********************************************************************/
|
|
|
|
char *unix_clean_name(TALLOC_CTX *ctx, const char *s)
|
|
{
|
|
char *p = NULL;
|
|
char *str = NULL;
|
|
|
|
DEBUG(3,("unix_clean_name [%s]\n",s));
|
|
|
|
/* remove any double slashes */
|
|
str = talloc_all_string_sub(ctx, s, "//","/");
|
|
if (!str) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Remove leading ./ characters */
|
|
if(strncmp(str, "./", 2) == 0) {
|
|
trim_string(str, "./", NULL);
|
|
if(*str == 0) {
|
|
str = talloc_strdup(ctx, "./");
|
|
if (!str) {
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
while ((p = strstr_m(str,"/../")) != NULL) {
|
|
char *s1;
|
|
|
|
*p = 0;
|
|
s1 = p+3;
|
|
|
|
if ((p=strrchr_m(str,'/')) != NULL) {
|
|
*p = 0;
|
|
} else {
|
|
*str = 0;
|
|
}
|
|
str = talloc_asprintf(ctx,
|
|
"%s%s",
|
|
str,
|
|
s1);
|
|
if (!str) {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
trim_string(str,NULL,"/..");
|
|
return talloc_all_string_sub(ctx, str, "/./", "/");
|
|
}
|
|
|
|
char *clean_name(TALLOC_CTX *ctx, const char *s)
|
|
{
|
|
char *str = dos_clean_name(ctx, s);
|
|
if (!str) {
|
|
return NULL;
|
|
}
|
|
return unix_clean_name(ctx, str);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Close the low 3 fd's and open dev/null in their place.
|
|
********************************************************************/
|
|
|
|
void close_low_fds(bool stderr_too)
|
|
{
|
|
#ifndef VALGRIND
|
|
int fd;
|
|
int i;
|
|
|
|
close(0);
|
|
close(1);
|
|
|
|
if (stderr_too)
|
|
close(2);
|
|
|
|
/* try and use up these file descriptors, so silly
|
|
library routines writing to stdout etc won't cause havoc */
|
|
for (i=0;i<3;i++) {
|
|
if (i == 2 && !stderr_too)
|
|
continue;
|
|
|
|
fd = sys_open("/dev/null",O_RDWR,0);
|
|
if (fd < 0)
|
|
fd = sys_open("/dev/null",O_WRONLY,0);
|
|
if (fd < 0) {
|
|
DEBUG(0,("Can't open /dev/null\n"));
|
|
return;
|
|
}
|
|
if (fd != i) {
|
|
DEBUG(0,("Didn't get file descriptor %d\n",i));
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*******************************************************************
|
|
Write data into an fd at a given offset. Ignore seek errors.
|
|
********************************************************************/
|
|
|
|
ssize_t write_data_at_offset(int fd, const char *buffer, size_t N, SMB_OFF_T pos)
|
|
{
|
|
size_t total=0;
|
|
ssize_t ret;
|
|
|
|
if (pos == (SMB_OFF_T)-1) {
|
|
return write_data(fd, buffer, N);
|
|
}
|
|
#if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
|
|
while (total < N) {
|
|
ret = sys_pwrite(fd,buffer + total,N - total, pos);
|
|
if (ret == -1 && errno == ESPIPE) {
|
|
return write_data(fd, buffer + total,N - total);
|
|
}
|
|
if (ret == -1) {
|
|
DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno) ));
|
|
return -1;
|
|
}
|
|
if (ret == 0) {
|
|
return total;
|
|
}
|
|
total += ret;
|
|
pos += ret;
|
|
}
|
|
return (ssize_t)total;
|
|
#else
|
|
/* Use lseek and write_data. */
|
|
if (sys_lseek(fd, pos, SEEK_SET) == -1) {
|
|
if (errno != ESPIPE) {
|
|
return -1;
|
|
}
|
|
}
|
|
return write_data(fd, buffer, N);
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************************
|
|
Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
|
|
else
|
|
if SYSV use O_NDELAY
|
|
if BSD use FNDELAY
|
|
****************************************************************************/
|
|
|
|
int set_blocking(int fd, bool set)
|
|
{
|
|
int val;
|
|
#ifdef O_NONBLOCK
|
|
#define FLAG_TO_SET O_NONBLOCK
|
|
#else
|
|
#ifdef SYSV
|
|
#define FLAG_TO_SET O_NDELAY
|
|
#else /* BSD */
|
|
#define FLAG_TO_SET FNDELAY
|
|
#endif
|
|
#endif
|
|
|
|
if((val = sys_fcntl_long(fd, F_GETFL, 0)) == -1)
|
|
return -1;
|
|
if(set) /* Turn blocking on - ie. clear nonblock flag */
|
|
val &= ~FLAG_TO_SET;
|
|
else
|
|
val |= FLAG_TO_SET;
|
|
return sys_fcntl_long( fd, F_SETFL, val);
|
|
#undef FLAG_TO_SET
|
|
}
|
|
|
|
/*******************************************************************
|
|
Sleep for a specified number of milliseconds.
|
|
********************************************************************/
|
|
|
|
void smb_msleep(unsigned int t)
|
|
{
|
|
#if defined(HAVE_NANOSLEEP)
|
|
struct timespec tval;
|
|
int ret;
|
|
|
|
tval.tv_sec = t/1000;
|
|
tval.tv_nsec = 1000000*(t%1000);
|
|
|
|
do {
|
|
errno = 0;
|
|
ret = nanosleep(&tval, &tval);
|
|
} while (ret < 0 && errno == EINTR && (tval.tv_sec > 0 || tval.tv_nsec > 0));
|
|
#else
|
|
unsigned int tdiff=0;
|
|
struct timeval tval,t1,t2;
|
|
fd_set fds;
|
|
|
|
GetTimeOfDay(&t1);
|
|
t2 = t1;
|
|
|
|
while (tdiff < t) {
|
|
tval.tv_sec = (t-tdiff)/1000;
|
|
tval.tv_usec = 1000*((t-tdiff)%1000);
|
|
|
|
/* Never wait for more than 1 sec. */
|
|
if (tval.tv_sec > 1) {
|
|
tval.tv_sec = 1;
|
|
tval.tv_usec = 0;
|
|
}
|
|
|
|
FD_ZERO(&fds);
|
|
errno = 0;
|
|
sys_select_intr(0,&fds,NULL,NULL,&tval);
|
|
|
|
GetTimeOfDay(&t2);
|
|
if (t2.tv_sec < t1.tv_sec) {
|
|
/* Someone adjusted time... */
|
|
t1 = t2;
|
|
}
|
|
|
|
tdiff = TvalDiff(&t1,&t2);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************************
|
|
Become a daemon, discarding the controlling terminal.
|
|
****************************************************************************/
|
|
|
|
void become_daemon(bool Fork, bool no_process_group)
|
|
{
|
|
if (Fork) {
|
|
if (sys_fork()) {
|
|
_exit(0);
|
|
}
|
|
}
|
|
|
|
/* detach from the terminal */
|
|
#ifdef HAVE_SETSID
|
|
if (!no_process_group) setsid();
|
|
#elif defined(TIOCNOTTY)
|
|
if (!no_process_group) {
|
|
int i = sys_open("/dev/tty", O_RDWR, 0);
|
|
if (i != -1) {
|
|
ioctl(i, (int) TIOCNOTTY, (char *)0);
|
|
close(i);
|
|
}
|
|
}
|
|
#endif /* HAVE_SETSID */
|
|
|
|
/* Close fd's 0,1,2. Needed if started by rsh */
|
|
close_low_fds(False); /* Don't close stderr, let the debug system
|
|
attach it to the logfile */
|
|
}
|
|
|
|
/****************************************************************************
|
|
Put up a yes/no prompt.
|
|
****************************************************************************/
|
|
|
|
bool yesno(const char *p)
|
|
{
|
|
char ans[20];
|
|
printf("%s",p);
|
|
|
|
if (!fgets(ans,sizeof(ans)-1,stdin))
|
|
return(False);
|
|
|
|
if (*ans == 'y' || *ans == 'Y')
|
|
return(True);
|
|
|
|
return(False);
|
|
}
|
|
|
|
#if defined(PARANOID_MALLOC_CHECKER)
|
|
|
|
/****************************************************************************
|
|
Internal malloc wrapper. Externally visible.
|
|
****************************************************************************/
|
|
|
|
void *malloc_(size_t size)
|
|
{
|
|
if (size == 0) {
|
|
return NULL;
|
|
}
|
|
#undef malloc
|
|
return malloc(size);
|
|
#define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
|
|
}
|
|
|
|
/****************************************************************************
|
|
Internal calloc wrapper. Not externally visible.
|
|
****************************************************************************/
|
|
|
|
static void *calloc_(size_t count, size_t size)
|
|
{
|
|
if (size == 0 || count == 0) {
|
|
return NULL;
|
|
}
|
|
#undef calloc
|
|
return calloc(count, size);
|
|
#define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
|
|
}
|
|
|
|
/****************************************************************************
|
|
Internal realloc wrapper. Not externally visible.
|
|
****************************************************************************/
|
|
|
|
static void *realloc_(void *ptr, size_t size)
|
|
{
|
|
#undef realloc
|
|
return realloc(ptr, size);
|
|
#define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
|
|
}
|
|
|
|
#endif /* PARANOID_MALLOC_CHECKER */
|
|
|
|
/****************************************************************************
|
|
Type-safe malloc.
|
|
****************************************************************************/
|
|
|
|
void *malloc_array(size_t el_size, unsigned int count)
|
|
{
|
|
if (count >= MAX_ALLOC_SIZE/el_size) {
|
|
return NULL;
|
|
}
|
|
|
|
if (el_size == 0 || count == 0) {
|
|
return NULL;
|
|
}
|
|
#if defined(PARANOID_MALLOC_CHECKER)
|
|
return malloc_(el_size*count);
|
|
#else
|
|
return malloc(el_size*count);
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************************
|
|
Type-safe memalign
|
|
****************************************************************************/
|
|
|
|
void *memalign_array(size_t el_size, size_t align, unsigned int count)
|
|
{
|
|
if (count >= MAX_ALLOC_SIZE/el_size) {
|
|
return NULL;
|
|
}
|
|
|
|
return sys_memalign(align, el_size*count);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Type-safe calloc.
|
|
****************************************************************************/
|
|
|
|
void *calloc_array(size_t size, size_t nmemb)
|
|
{
|
|
if (nmemb >= MAX_ALLOC_SIZE/size) {
|
|
return NULL;
|
|
}
|
|
if (size == 0 || nmemb == 0) {
|
|
return NULL;
|
|
}
|
|
#if defined(PARANOID_MALLOC_CHECKER)
|
|
return calloc_(nmemb, size);
|
|
#else
|
|
return calloc(nmemb, size);
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************************
|
|
Expand a pointer to be a particular size.
|
|
Note that this version of Realloc has an extra parameter that decides
|
|
whether to free the passed in storage on allocation failure or if the
|
|
new size is zero.
|
|
|
|
This is designed for use in the typical idiom of :
|
|
|
|
p = SMB_REALLOC(p, size)
|
|
if (!p) {
|
|
return error;
|
|
}
|
|
|
|
and not to have to keep track of the old 'p' contents to free later, nor
|
|
to worry if the size parameter was zero. In the case where NULL is returned
|
|
we guarentee that p has been freed.
|
|
|
|
If free later semantics are desired, then pass 'free_old_on_error' as False which
|
|
guarentees that the old contents are not freed on error, even if size == 0. To use
|
|
this idiom use :
|
|
|
|
tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
|
|
if (!tmp) {
|
|
SAFE_FREE(p);
|
|
return error;
|
|
} else {
|
|
p = tmp;
|
|
}
|
|
|
|
Changes were instigated by Coverity error checking. JRA.
|
|
****************************************************************************/
|
|
|
|
void *Realloc(void *p, size_t size, bool free_old_on_error)
|
|
{
|
|
void *ret=NULL;
|
|
|
|
if (size == 0) {
|
|
if (free_old_on_error) {
|
|
SAFE_FREE(p);
|
|
}
|
|
DEBUG(2,("Realloc asked for 0 bytes\n"));
|
|
return NULL;
|
|
}
|
|
|
|
#if defined(PARANOID_MALLOC_CHECKER)
|
|
if (!p) {
|
|
ret = (void *)malloc_(size);
|
|
} else {
|
|
ret = (void *)realloc_(p,size);
|
|
}
|
|
#else
|
|
if (!p) {
|
|
ret = (void *)malloc(size);
|
|
} else {
|
|
ret = (void *)realloc(p,size);
|
|
}
|
|
#endif
|
|
|
|
if (!ret) {
|
|
if (free_old_on_error && p) {
|
|
SAFE_FREE(p);
|
|
}
|
|
DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size));
|
|
}
|
|
|
|
return(ret);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Type-safe realloc.
|
|
****************************************************************************/
|
|
|
|
void *realloc_array(void *p, size_t el_size, unsigned int count, bool free_old_on_error)
|
|
{
|
|
if (count >= MAX_ALLOC_SIZE/el_size) {
|
|
if (free_old_on_error) {
|
|
SAFE_FREE(p);
|
|
}
|
|
return NULL;
|
|
}
|
|
return Realloc(p, el_size*count, free_old_on_error);
|
|
}
|
|
|
|
/****************************************************************************
|
|
(Hopefully) efficient array append.
|
|
****************************************************************************/
|
|
|
|
void add_to_large_array(TALLOC_CTX *mem_ctx, size_t element_size,
|
|
void *element, void *_array, uint32 *num_elements,
|
|
ssize_t *array_size)
|
|
{
|
|
void **array = (void **)_array;
|
|
|
|
if (*array_size < 0) {
|
|
return;
|
|
}
|
|
|
|
if (*array == NULL) {
|
|
if (*array_size == 0) {
|
|
*array_size = 128;
|
|
}
|
|
|
|
if (*array_size >= MAX_ALLOC_SIZE/element_size) {
|
|
goto error;
|
|
}
|
|
|
|
*array = TALLOC(mem_ctx, element_size * (*array_size));
|
|
if (*array == NULL) {
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (*num_elements == *array_size) {
|
|
*array_size *= 2;
|
|
|
|
if (*array_size >= MAX_ALLOC_SIZE/element_size) {
|
|
goto error;
|
|
}
|
|
|
|
*array = TALLOC_REALLOC(mem_ctx, *array,
|
|
element_size * (*array_size));
|
|
|
|
if (*array == NULL) {
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
memcpy((char *)(*array) + element_size*(*num_elements),
|
|
element, element_size);
|
|
*num_elements += 1;
|
|
|
|
return;
|
|
|
|
error:
|
|
*num_elements = 0;
|
|
*array_size = -1;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Free memory, checks for NULL.
|
|
Use directly SAFE_FREE()
|
|
Exists only because we need to pass a function pointer somewhere --SSS
|
|
****************************************************************************/
|
|
|
|
void safe_free(void *p)
|
|
{
|
|
SAFE_FREE(p);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Get my own name and IP.
|
|
****************************************************************************/
|
|
|
|
char *get_myname(TALLOC_CTX *ctx)
|
|
{
|
|
char *p;
|
|
char hostname[HOST_NAME_MAX];
|
|
|
|
*hostname = 0;
|
|
|
|
/* get my host name */
|
|
if (gethostname(hostname, sizeof(hostname)) == -1) {
|
|
DEBUG(0,("gethostname failed\n"));
|
|
return False;
|
|
}
|
|
|
|
/* Ensure null termination. */
|
|
hostname[sizeof(hostname)-1] = '\0';
|
|
|
|
/* split off any parts after an initial . */
|
|
p = strchr_m(hostname,'.');
|
|
if (p) {
|
|
*p = 0;
|
|
}
|
|
|
|
return talloc_strdup(ctx, hostname);
|
|
}
|
|
|
|
/****************************************************************************
|
|
Get my own domain name, or "" if we have none.
|
|
****************************************************************************/
|
|
|
|
char *get_mydnsdomname(TALLOC_CTX *ctx)
|
|
{
|
|
const char *domname;
|
|
char *p;
|
|
|
|
domname = get_mydnsfullname();
|
|
if (!domname) {
|
|
return NULL;
|
|
}
|
|
|
|
p = strchr_m(domname, '.');
|
|
if (p) {
|
|
p++;
|
|
return talloc_strdup(ctx, p);
|
|
} else {
|
|
return talloc_strdup(ctx, "");
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
Interpret a protocol description string, with a default.
|
|
****************************************************************************/
|
|
|
|
int interpret_protocol(const char *str,int def)
|
|
{
|
|
if (strequal(str,"NT1"))
|
|
return(PROTOCOL_NT1);
|
|
if (strequal(str,"LANMAN2"))
|
|
return(PROTOCOL_LANMAN2);
|
|
if (strequal(str,"LANMAN1"))
|
|
return(PROTOCOL_LANMAN1);
|
|
if (strequal(str,"CORE"))
|
|
return(PROTOCOL_CORE);
|
|
if (strequal(str,"COREPLUS"))
|
|
return(PROTOCOL_COREPLUS);
|
|
if (strequal(str,"CORE+"))
|
|
return(PROTOCOL_COREPLUS);
|
|
|
|
DEBUG(0,("Unrecognised protocol level %s\n",str));
|
|
|
|
return(def);
|
|
}
|
|
|
|
|
|
#if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
|
|
/******************************************************************
|
|
Remove any mount options such as -rsize=2048,wsize=2048 etc.
|
|
Based on a fix from <Thomas.Hepper@icem.de>.
|
|
Returns a malloc'ed string.
|
|
*******************************************************************/
|
|
|
|
static char *strip_mount_options(TALLOC_CTX *ctx, const char *str)
|
|
{
|
|
if (*str == '-') {
|
|
const char *p = str;
|
|
while(*p && !isspace(*p))
|
|
p++;
|
|
while(*p && isspace(*p))
|
|
p++;
|
|
if(*p) {
|
|
return talloc_strdup(ctx, p);
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Patch from jkf@soton.ac.uk
|
|
Split Luke's automount_server into YP lookup and string splitter
|
|
so can easily implement automount_path().
|
|
Returns a malloc'ed string.
|
|
*******************************************************************/
|
|
|
|
#ifdef WITH_NISPLUS_HOME
|
|
char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
|
|
{
|
|
char *value = NULL;
|
|
|
|
char *nis_map = (char *)lp_nis_home_map_name();
|
|
|
|
char buffer[NIS_MAXATTRVAL + 1];
|
|
nis_result *result;
|
|
nis_object *object;
|
|
entry_obj *entry;
|
|
|
|
snprintf(buffer, sizeof(buffer), "[key=%s],%s", user_name, nis_map);
|
|
DEBUG(5, ("NIS+ querystring: %s\n", buffer));
|
|
|
|
if (result = nis_list(buffer, FOLLOW_PATH|EXPAND_NAME|HARD_LOOKUP, NULL, NULL)) {
|
|
if (result->status != NIS_SUCCESS) {
|
|
DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result->status)));
|
|
} else {
|
|
object = result->objects.objects_val;
|
|
if (object->zo_data.zo_type == ENTRY_OBJ) {
|
|
entry = &object->zo_data.objdata_u.en_data;
|
|
DEBUG(5, ("NIS+ entry type: %s\n", entry->en_type));
|
|
DEBUG(3, ("NIS+ result: %s\n", entry->en_cols.en_cols_val[1].ec_value.ec_value_val));
|
|
|
|
value = talloc_strdup(ctx,
|
|
entry->en_cols.en_cols_val[1].ec_value.ec_value_val);
|
|
if (!value) {
|
|
nis_freeresult(result);
|
|
return NULL;
|
|
}
|
|
value = talloc_string_sub(ctx,
|
|
value,
|
|
"&",
|
|
user_name);
|
|
}
|
|
}
|
|
}
|
|
nis_freeresult(result);
|
|
|
|
if (value) {
|
|
value = strip_mount_options(ctx, value);
|
|
DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
|
|
user_name, value));
|
|
}
|
|
return value;
|
|
}
|
|
#else /* WITH_NISPLUS_HOME */
|
|
|
|
char *automount_lookup(TALLOC_CTX *ctx, const char *user_name)
|
|
{
|
|
char *value = NULL;
|
|
|
|
int nis_error; /* returned by yp all functions */
|
|
char *nis_result; /* yp_match inits this */
|
|
int nis_result_len; /* and set this */
|
|
char *nis_domain; /* yp_get_default_domain inits this */
|
|
char *nis_map = (char *)lp_nis_home_map_name();
|
|
|
|
if ((nis_error = yp_get_default_domain(&nis_domain)) != 0) {
|
|
DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error)));
|
|
return NULL;
|
|
}
|
|
|
|
DEBUG(5, ("NIS Domain: %s\n", nis_domain));
|
|
|
|
if ((nis_error = yp_match(nis_domain, nis_map, user_name,
|
|
strlen(user_name), &nis_result,
|
|
&nis_result_len)) == 0) {
|
|
value = talloc_strdup(ctx, nis_result);
|
|
if (!value) {
|
|
return NULL;
|
|
}
|
|
value = strip_mount_options(ctx, value);
|
|
} else if(nis_error == YPERR_KEY) {
|
|
DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
|
|
user_name, nis_map));
|
|
DEBUG(3, ("using defaults for server and home directory\n"));
|
|
} else {
|
|
DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
|
|
yperr_string(nis_error), user_name, nis_map));
|
|
}
|
|
|
|
if (value) {
|
|
DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name, value));
|
|
}
|
|
return value;
|
|
}
|
|
#endif /* WITH_NISPLUS_HOME */
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
Check if a process exists. Does this work on all unixes?
|
|
****************************************************************************/
|
|
|
|
bool process_exists(const struct server_id pid)
|
|
{
|
|
if (procid_is_me(&pid)) {
|
|
return True;
|
|
}
|
|
|
|
if (procid_is_local(&pid)) {
|
|
return (kill(pid.pid,0) == 0 || errno != ESRCH);
|
|
}
|
|
|
|
#ifdef CLUSTER_SUPPORT
|
|
return ctdbd_process_exists(messaging_ctdbd_connection(), pid.vnn,
|
|
pid.pid);
|
|
#else
|
|
return False;
|
|
#endif
|
|
}
|
|
|
|
bool process_exists_by_pid(pid_t pid)
|
|
{
|
|
/* Doing kill with a non-positive pid causes messages to be
|
|
* sent to places we don't want. */
|
|
SMB_ASSERT(pid > 0);
|
|
return(kill(pid,0) == 0 || errno != ESRCH);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Convert a uid into a user name.
|
|
********************************************************************/
|
|
|
|
const char *uidtoname(uid_t uid)
|
|
{
|
|
TALLOC_CTX *ctx = talloc_tos();
|
|
char *name = NULL;
|
|
struct passwd *pass = NULL;
|
|
|
|
pass = getpwuid_alloc(ctx,uid);
|
|
if (pass) {
|
|
name = talloc_strdup(ctx,pass->pw_name);
|
|
TALLOC_FREE(pass);
|
|
} else {
|
|
name = talloc_asprintf(ctx,
|
|
"%ld",
|
|
(long int)uid);
|
|
}
|
|
return name;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Convert a gid into a group name.
|
|
********************************************************************/
|
|
|
|
char *gidtoname(gid_t gid)
|
|
{
|
|
struct group *grp;
|
|
|
|
grp = getgrgid(gid);
|
|
if (grp) {
|
|
return talloc_strdup(talloc_tos(), grp->gr_name);
|
|
}
|
|
else {
|
|
return talloc_asprintf(talloc_tos(),
|
|
"%d",
|
|
(int)gid);
|
|
}
|
|
}
|
|
|
|
/*******************************************************************
|
|
Convert a user name into a uid.
|
|
********************************************************************/
|
|
|
|
uid_t nametouid(const char *name)
|
|
{
|
|
struct passwd *pass;
|
|
char *p;
|
|
uid_t u;
|
|
|
|
pass = getpwnam_alloc(NULL, name);
|
|
if (pass) {
|
|
u = pass->pw_uid;
|
|
TALLOC_FREE(pass);
|
|
return u;
|
|
}
|
|
|
|
u = (uid_t)strtol(name, &p, 0);
|
|
if ((p != name) && (*p == '\0'))
|
|
return u;
|
|
|
|
return (uid_t)-1;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Convert a name to a gid_t if possible. Return -1 if not a group.
|
|
********************************************************************/
|
|
|
|
gid_t nametogid(const char *name)
|
|
{
|
|
struct group *grp;
|
|
char *p;
|
|
gid_t g;
|
|
|
|
g = (gid_t)strtol(name, &p, 0);
|
|
if ((p != name) && (*p == '\0'))
|
|
return g;
|
|
|
|
grp = sys_getgrnam(name);
|
|
if (grp)
|
|
return(grp->gr_gid);
|
|
return (gid_t)-1;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Something really nasty happened - panic !
|
|
********************************************************************/
|
|
|
|
void smb_panic(const char *const why)
|
|
{
|
|
char *cmd;
|
|
int result;
|
|
|
|
#ifdef DEVELOPER
|
|
{
|
|
|
|
if (global_clobber_region_function) {
|
|
DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
|
|
global_clobber_region_function,
|
|
global_clobber_region_line));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
DEBUG(0,("PANIC (pid %llu): %s\n",
|
|
(unsigned long long)sys_getpid(), why));
|
|
log_stack_trace();
|
|
|
|
cmd = lp_panic_action();
|
|
if (cmd && *cmd) {
|
|
DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd));
|
|
result = system(cmd);
|
|
|
|
if (result == -1)
|
|
DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
|
|
strerror(errno)));
|
|
else
|
|
DEBUG(0, ("smb_panic(): action returned status %d\n",
|
|
WEXITSTATUS(result)));
|
|
}
|
|
|
|
dump_core();
|
|
}
|
|
|
|
/*******************************************************************
|
|
Print a backtrace of the stack to the debug log. This function
|
|
DELIBERATELY LEAKS MEMORY. The expectation is that you should
|
|
exit shortly after calling it.
|
|
********************************************************************/
|
|
|
|
#ifdef HAVE_LIBUNWIND_H
|
|
#include <libunwind.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_EXECINFO_H
|
|
#include <execinfo.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_LIBEXC_H
|
|
#include <libexc.h>
|
|
#endif
|
|
|
|
void log_stack_trace(void)
|
|
{
|
|
#ifdef HAVE_LIBUNWIND
|
|
/* Try to use libunwind before any other technique since on ia64
|
|
* libunwind correctly walks the stack in more circumstances than
|
|
* backtrace.
|
|
*/
|
|
unw_cursor_t cursor;
|
|
unw_context_t uc;
|
|
unsigned i = 0;
|
|
|
|
char procname[256];
|
|
unw_word_t ip, sp, off;
|
|
|
|
procname[sizeof(procname) - 1] = '\0';
|
|
|
|
if (unw_getcontext(&uc) != 0) {
|
|
goto libunwind_failed;
|
|
}
|
|
|
|
if (unw_init_local(&cursor, &uc) != 0) {
|
|
goto libunwind_failed;
|
|
}
|
|
|
|
DEBUG(0, ("BACKTRACE:\n"));
|
|
|
|
do {
|
|
ip = sp = 0;
|
|
unw_get_reg(&cursor, UNW_REG_IP, &ip);
|
|
unw_get_reg(&cursor, UNW_REG_SP, &sp);
|
|
|
|
switch (unw_get_proc_name(&cursor,
|
|
procname, sizeof(procname) - 1, &off) ) {
|
|
case 0:
|
|
/* Name found. */
|
|
case -UNW_ENOMEM:
|
|
/* Name truncated. */
|
|
DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
|
|
i, procname, (long long)off,
|
|
(long long)ip, (long long) sp));
|
|
break;
|
|
default:
|
|
/* case -UNW_ENOINFO: */
|
|
/* case -UNW_EUNSPEC: */
|
|
/* No symbol name found. */
|
|
DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
|
|
i, "<unknown symbol>",
|
|
(long long)ip, (long long) sp));
|
|
}
|
|
++i;
|
|
} while (unw_step(&cursor) > 0);
|
|
|
|
return;
|
|
|
|
libunwind_failed:
|
|
DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
|
|
|
|
#elif HAVE_BACKTRACE_SYMBOLS
|
|
void *backtrace_stack[BACKTRACE_STACK_SIZE];
|
|
size_t backtrace_size;
|
|
char **backtrace_strings;
|
|
|
|
/* get the backtrace (stack frames) */
|
|
backtrace_size = backtrace(backtrace_stack,BACKTRACE_STACK_SIZE);
|
|
backtrace_strings = backtrace_symbols(backtrace_stack, backtrace_size);
|
|
|
|
DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
|
|
(unsigned long)backtrace_size));
|
|
|
|
if (backtrace_strings) {
|
|
int i;
|
|
|
|
for (i = 0; i < backtrace_size; i++)
|
|
DEBUGADD(0, (" #%u %s\n", i, backtrace_strings[i]));
|
|
|
|
/* Leak the backtrace_strings, rather than risk what free() might do */
|
|
}
|
|
|
|
#elif HAVE_LIBEXC
|
|
|
|
/* The IRIX libexc library provides an API for unwinding the stack. See
|
|
* libexc(3) for details. Apparantly trace_back_stack leaks memory, but
|
|
* since we are about to abort anyway, it hardly matters.
|
|
*/
|
|
|
|
#define NAMESIZE 32 /* Arbitrary */
|
|
|
|
__uint64_t addrs[BACKTRACE_STACK_SIZE];
|
|
char * names[BACKTRACE_STACK_SIZE];
|
|
char namebuf[BACKTRACE_STACK_SIZE * NAMESIZE];
|
|
|
|
int i;
|
|
int levels;
|
|
|
|
ZERO_ARRAY(addrs);
|
|
ZERO_ARRAY(names);
|
|
ZERO_ARRAY(namebuf);
|
|
|
|
/* We need to be root so we can open our /proc entry to walk
|
|
* our stack. It also helps when we want to dump core.
|
|
*/
|
|
become_root();
|
|
|
|
for (i = 0; i < BACKTRACE_STACK_SIZE; i++) {
|
|
names[i] = namebuf + (i * NAMESIZE);
|
|
}
|
|
|
|
levels = trace_back_stack(0, addrs, names,
|
|
BACKTRACE_STACK_SIZE, NAMESIZE - 1);
|
|
|
|
DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels));
|
|
for (i = 0; i < levels; i++) {
|
|
DEBUGADD(0, (" #%d 0x%llx %s\n", i, addrs[i], names[i]));
|
|
}
|
|
#undef NAMESIZE
|
|
|
|
#else
|
|
DEBUG(0, ("unable to produce a stack trace on this platform\n"));
|
|
#endif
|
|
}
|
|
|
|
/*******************************************************************
|
|
A readdir wrapper which just returns the file name.
|
|
********************************************************************/
|
|
|
|
const char *readdirname(SMB_STRUCT_DIR *p)
|
|
{
|
|
SMB_STRUCT_DIRENT *ptr;
|
|
char *dname;
|
|
|
|
if (!p)
|
|
return(NULL);
|
|
|
|
ptr = (SMB_STRUCT_DIRENT *)sys_readdir(p);
|
|
if (!ptr)
|
|
return(NULL);
|
|
|
|
dname = ptr->d_name;
|
|
|
|
#ifdef NEXT2
|
|
if (telldir(p) < 0)
|
|
return(NULL);
|
|
#endif
|
|
|
|
#ifdef HAVE_BROKEN_READDIR_NAME
|
|
/* using /usr/ucb/cc is BAD */
|
|
dname = dname - 2;
|
|
#endif
|
|
|
|
return talloc_strdup(talloc_tos(), dname);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Utility function used to decide if the last component
|
|
of a path matches a (possibly wildcarded) entry in a namelist.
|
|
********************************************************************/
|
|
|
|
bool is_in_path(const char *name, name_compare_entry *namelist, bool case_sensitive)
|
|
{
|
|
const char *last_component;
|
|
|
|
/* if we have no list it's obviously not in the path */
|
|
if((namelist == NULL ) || ((namelist != NULL) && (namelist[0].name == NULL))) {
|
|
return False;
|
|
}
|
|
|
|
DEBUG(8, ("is_in_path: %s\n", name));
|
|
|
|
/* Get the last component of the unix name. */
|
|
last_component = strrchr_m(name, '/');
|
|
if (!last_component) {
|
|
last_component = name;
|
|
} else {
|
|
last_component++; /* Go past '/' */
|
|
}
|
|
|
|
for(; namelist->name != NULL; namelist++) {
|
|
if(namelist->is_wild) {
|
|
if (mask_match(last_component, namelist->name, case_sensitive)) {
|
|
DEBUG(8,("is_in_path: mask match succeeded\n"));
|
|
return True;
|
|
}
|
|
} else {
|
|
if((case_sensitive && (strcmp(last_component, namelist->name) == 0))||
|
|
(!case_sensitive && (StrCaseCmp(last_component, namelist->name) == 0))) {
|
|
DEBUG(8,("is_in_path: match succeeded\n"));
|
|
return True;
|
|
}
|
|
}
|
|
}
|
|
DEBUG(8,("is_in_path: match not found\n"));
|
|
return False;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Strip a '/' separated list into an array of
|
|
name_compare_enties structures suitable for
|
|
passing to is_in_path(). We do this for
|
|
speed so we can pre-parse all the names in the list
|
|
and don't do it for each call to is_in_path().
|
|
namelist is modified here and is assumed to be
|
|
a copy owned by the caller.
|
|
We also check if the entry contains a wildcard to
|
|
remove a potentially expensive call to mask_match
|
|
if possible.
|
|
********************************************************************/
|
|
|
|
void set_namearray(name_compare_entry **ppname_array, char *namelist)
|
|
{
|
|
char *name_end;
|
|
char *nameptr = namelist;
|
|
int num_entries = 0;
|
|
int i;
|
|
|
|
(*ppname_array) = NULL;
|
|
|
|
if((nameptr == NULL ) || ((nameptr != NULL) && (*nameptr == '\0')))
|
|
return;
|
|
|
|
/* We need to make two passes over the string. The
|
|
first to count the number of elements, the second
|
|
to split it.
|
|
*/
|
|
|
|
while(*nameptr) {
|
|
if ( *nameptr == '/' ) {
|
|
/* cope with multiple (useless) /s) */
|
|
nameptr++;
|
|
continue;
|
|
}
|
|
/* find the next / */
|
|
name_end = strchr_m(nameptr, '/');
|
|
|
|
/* oops - the last check for a / didn't find one. */
|
|
if (name_end == NULL)
|
|
break;
|
|
|
|
/* next segment please */
|
|
nameptr = name_end + 1;
|
|
num_entries++;
|
|
}
|
|
|
|
if(num_entries == 0)
|
|
return;
|
|
|
|
if(( (*ppname_array) = SMB_MALLOC_ARRAY(name_compare_entry, num_entries + 1)) == NULL) {
|
|
DEBUG(0,("set_namearray: malloc fail\n"));
|
|
return;
|
|
}
|
|
|
|
/* Now copy out the names */
|
|
nameptr = namelist;
|
|
i = 0;
|
|
while(*nameptr) {
|
|
if ( *nameptr == '/' ) {
|
|
/* cope with multiple (useless) /s) */
|
|
nameptr++;
|
|
continue;
|
|
}
|
|
/* find the next / */
|
|
if ((name_end = strchr_m(nameptr, '/')) != NULL)
|
|
*name_end = 0;
|
|
|
|
/* oops - the last check for a / didn't find one. */
|
|
if(name_end == NULL)
|
|
break;
|
|
|
|
(*ppname_array)[i].is_wild = ms_has_wild(nameptr);
|
|
if(((*ppname_array)[i].name = SMB_STRDUP(nameptr)) == NULL) {
|
|
DEBUG(0,("set_namearray: malloc fail (1)\n"));
|
|
return;
|
|
}
|
|
|
|
/* next segment please */
|
|
nameptr = name_end + 1;
|
|
i++;
|
|
}
|
|
|
|
(*ppname_array)[i].name = NULL;
|
|
|
|
return;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Routine to free a namearray.
|
|
****************************************************************************/
|
|
|
|
void free_namearray(name_compare_entry *name_array)
|
|
{
|
|
int i;
|
|
|
|
if(name_array == NULL)
|
|
return;
|
|
|
|
for(i=0; name_array[i].name!=NULL; i++)
|
|
SAFE_FREE(name_array[i].name);
|
|
SAFE_FREE(name_array);
|
|
}
|
|
|
|
#undef DBGC_CLASS
|
|
#define DBGC_CLASS DBGC_LOCKING
|
|
|
|
/****************************************************************************
|
|
Simple routine to do POSIX file locking. Cruft in NFS and 64->32 bit mapping
|
|
is dealt with in posix.c
|
|
Returns True if the lock was granted, False otherwise.
|
|
****************************************************************************/
|
|
|
|
bool fcntl_lock(int fd, int op, SMB_OFF_T offset, SMB_OFF_T count, int type)
|
|
{
|
|
SMB_STRUCT_FLOCK lock;
|
|
int ret;
|
|
|
|
DEBUG(8,("fcntl_lock fd=%d op=%d offset=%.0f count=%.0f type=%d\n",
|
|
fd,op,(double)offset,(double)count,type));
|
|
|
|
lock.l_type = type;
|
|
lock.l_whence = SEEK_SET;
|
|
lock.l_start = offset;
|
|
lock.l_len = count;
|
|
lock.l_pid = 0;
|
|
|
|
ret = sys_fcntl_ptr(fd,op,&lock);
|
|
|
|
if (ret == -1) {
|
|
int sav = errno;
|
|
DEBUG(3,("fcntl_lock: lock failed at offset %.0f count %.0f op %d type %d (%s)\n",
|
|
(double)offset,(double)count,op,type,strerror(errno)));
|
|
errno = sav;
|
|
return False;
|
|
}
|
|
|
|
/* everything went OK */
|
|
DEBUG(8,("fcntl_lock: Lock call successful\n"));
|
|
|
|
return True;
|
|
}
|
|
|
|
/****************************************************************************
|
|
Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
|
|
is dealt with in posix.c
|
|
Returns True if we have information regarding this lock region (and returns
|
|
F_UNLCK in *ptype if the region is unlocked). False if the call failed.
|
|
****************************************************************************/
|
|
|
|
bool fcntl_getlock(int fd, SMB_OFF_T *poffset, SMB_OFF_T *pcount, int *ptype, pid_t *ppid)
|
|
{
|
|
SMB_STRUCT_FLOCK lock;
|
|
int ret;
|
|
|
|
DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
|
|
fd,(double)*poffset,(double)*pcount,*ptype));
|
|
|
|
lock.l_type = *ptype;
|
|
lock.l_whence = SEEK_SET;
|
|
lock.l_start = *poffset;
|
|
lock.l_len = *pcount;
|
|
lock.l_pid = 0;
|
|
|
|
ret = sys_fcntl_ptr(fd,SMB_F_GETLK,&lock);
|
|
|
|
if (ret == -1) {
|
|
int sav = errno;
|
|
DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
|
|
(double)*poffset,(double)*pcount,*ptype,strerror(errno)));
|
|
errno = sav;
|
|
return False;
|
|
}
|
|
|
|
*ptype = lock.l_type;
|
|
*poffset = lock.l_start;
|
|
*pcount = lock.l_len;
|
|
*ppid = lock.l_pid;
|
|
|
|
DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
|
|
fd, (int)lock.l_type, (unsigned int)lock.l_pid));
|
|
return True;
|
|
}
|
|
|
|
#undef DBGC_CLASS
|
|
#define DBGC_CLASS DBGC_ALL
|
|
|
|
/*******************************************************************
|
|
Is the name specified one of my netbios names.
|
|
Returns true if it is equal, false otherwise.
|
|
********************************************************************/
|
|
|
|
bool is_myname(const char *s)
|
|
{
|
|
int n;
|
|
bool ret = False;
|
|
|
|
for (n=0; my_netbios_names(n); n++) {
|
|
if (strequal(my_netbios_names(n), s)) {
|
|
ret=True;
|
|
break;
|
|
}
|
|
}
|
|
DEBUG(8, ("is_myname(\"%s\") returns %d\n", s, ret));
|
|
return(ret);
|
|
}
|
|
|
|
/*******************************************************************
|
|
Is the name specified our workgroup/domain.
|
|
Returns true if it is equal, false otherwise.
|
|
********************************************************************/
|
|
|
|
bool is_myworkgroup(const char *s)
|
|
{
|
|
bool ret = False;
|
|
|
|
if (strequal(s, lp_workgroup())) {
|
|
ret=True;
|
|
}
|
|
|
|
DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s, ret));
|
|
return(ret);
|
|
}
|
|
|
|
/*******************************************************************
|
|
we distinguish between 2K and XP by the "Native Lan Manager" string
|
|
WinXP => "Windows 2002 5.1"
|
|
WinXP 64bit => "Windows XP 5.2"
|
|
Win2k => "Windows 2000 5.0"
|
|
NT4 => "Windows NT 4.0"
|
|
Win9x => "Windows 4.0"
|
|
Windows 2003 doesn't set the native lan manager string but
|
|
they do set the domain to "Windows 2003 5.2" (probably a bug).
|
|
********************************************************************/
|
|
|
|
void ra_lanman_string( const char *native_lanman )
|
|
{
|
|
if ( strcmp( native_lanman, "Windows 2002 5.1" ) == 0 )
|
|
set_remote_arch( RA_WINXP );
|
|
else if ( strcmp( native_lanman, "Windows XP 5.2" ) == 0 )
|
|
set_remote_arch( RA_WINXP64 );
|
|
else if ( strcmp( native_lanman, "Windows Server 2003 5.2" ) == 0 )
|
|
set_remote_arch( RA_WIN2K3 );
|
|
}
|
|
|
|
static const char *remote_arch_str;
|
|
|
|
const char *get_remote_arch_str(void)
|
|
{
|
|
if (!remote_arch_str) {
|
|
return "UNKNOWN";
|
|
}
|
|
return remote_arch_str;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Set the horrid remote_arch string based on an enum.
|
|
********************************************************************/
|
|
|
|
void set_remote_arch(enum remote_arch_types type)
|
|
{
|
|
ra_type = type;
|
|
switch( type ) {
|
|
case RA_WFWG:
|
|
remote_arch_str = "WfWg";
|
|
break;
|
|
case RA_OS2:
|
|
remote_arch_str = "OS2";
|
|
break;
|
|
case RA_WIN95:
|
|
remote_arch_str = "Win95";
|
|
break;
|
|
case RA_WINNT:
|
|
remote_arch_str = "WinNT";
|
|
break;
|
|
case RA_WIN2K:
|
|
remote_arch_str = "Win2K";
|
|
break;
|
|
case RA_WINXP:
|
|
remote_arch_str = "WinXP";
|
|
break;
|
|
case RA_WINXP64:
|
|
remote_arch_str = "WinXP64";
|
|
break;
|
|
case RA_WIN2K3:
|
|
remote_arch_str = "Win2K3";
|
|
break;
|
|
case RA_VISTA:
|
|
remote_arch_str = "Vista";
|
|
break;
|
|
case RA_SAMBA:
|
|
remote_arch_str = "Samba";
|
|
break;
|
|
case RA_CIFSFS:
|
|
remote_arch_str = "CIFSFS";
|
|
break;
|
|
default:
|
|
ra_type = RA_UNKNOWN;
|
|
remote_arch_str = "UNKNOWN";
|
|
break;
|
|
}
|
|
|
|
DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
|
|
remote_arch_str));
|
|
}
|
|
|
|
/*******************************************************************
|
|
Get the remote_arch type.
|
|
********************************************************************/
|
|
|
|
enum remote_arch_types get_remote_arch(void)
|
|
{
|
|
return ra_type;
|
|
}
|
|
|
|
void print_asc(int level, const unsigned char *buf,int len)
|
|
{
|
|
int i;
|
|
for (i=0;i<len;i++)
|
|
DEBUG(level,("%c", isprint(buf[i])?buf[i]:'.'));
|
|
}
|
|
|
|
void dump_data(int level, const unsigned char *buf1,int len)
|
|
{
|
|
const unsigned char *buf = (const unsigned char *)buf1;
|
|
int i=0;
|
|
if (len<=0) return;
|
|
|
|
if (!DEBUGLVL(level)) return;
|
|
|
|
DEBUGADD(level,("[%03X] ",i));
|
|
for (i=0;i<len;) {
|
|
DEBUGADD(level,("%02X ",(int)buf[i]));
|
|
i++;
|
|
if (i%8 == 0) DEBUGADD(level,(" "));
|
|
if (i%16 == 0) {
|
|
print_asc(level,&buf[i-16],8); DEBUGADD(level,(" "));
|
|
print_asc(level,&buf[i-8],8); DEBUGADD(level,("\n"));
|
|
if (i<len) DEBUGADD(level,("[%03X] ",i));
|
|
}
|
|
}
|
|
if (i%16) {
|
|
int n;
|
|
n = 16 - (i%16);
|
|
DEBUGADD(level,(" "));
|
|
if (n>8) DEBUGADD(level,(" "));
|
|
while (n--) DEBUGADD(level,(" "));
|
|
n = MIN(8,i%16);
|
|
print_asc(level,&buf[i-(i%16)],n); DEBUGADD(level,( " " ));
|
|
n = (i%16) - n;
|
|
if (n>0) print_asc(level,&buf[i-n],n);
|
|
DEBUGADD(level,("\n"));
|
|
}
|
|
}
|
|
|
|
void dump_data_pw(const char *msg, const uchar * data, size_t len)
|
|
{
|
|
#ifdef DEBUG_PASSWORD
|
|
DEBUG(11, ("%s", msg));
|
|
if (data != NULL && len > 0)
|
|
{
|
|
dump_data(11, data, len);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
const char *tab_depth(int level, int depth)
|
|
{
|
|
if( CHECK_DEBUGLVL(level) ) {
|
|
dbgtext("%*s", depth*4, "");
|
|
}
|
|
return "";
|
|
}
|
|
|
|
/*****************************************************************************
|
|
Provide a checksum on a string
|
|
|
|
Input: s - the null-terminated character string for which the checksum
|
|
will be calculated.
|
|
|
|
Output: The checksum value calculated for s.
|
|
*****************************************************************************/
|
|
|
|
int str_checksum(const char *s)
|
|
{
|
|
int res = 0;
|
|
int c;
|
|
int i=0;
|
|
|
|
while(*s) {
|
|
c = *s;
|
|
res ^= (c << (i % 15)) ^ (c >> (15-(i%15)));
|
|
s++;
|
|
i++;
|
|
}
|
|
return(res);
|
|
}
|
|
|
|
/*****************************************************************
|
|
Zero a memory area then free it. Used to catch bugs faster.
|
|
*****************************************************************/
|
|
|
|
void zero_free(void *p, size_t size)
|
|
{
|
|
memset(p, 0, size);
|
|
SAFE_FREE(p);
|
|
}
|
|
|
|
/*****************************************************************
|
|
Set our open file limit to a requested max and return the limit.
|
|
*****************************************************************/
|
|
|
|
int set_maxfiles(int requested_max)
|
|
{
|
|
#if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
|
|
struct rlimit rlp;
|
|
int saved_current_limit;
|
|
|
|
if(getrlimit(RLIMIT_NOFILE, &rlp)) {
|
|
DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
|
|
strerror(errno) ));
|
|
/* just guess... */
|
|
return requested_max;
|
|
}
|
|
|
|
/*
|
|
* Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
|
|
* account for the extra fd we need
|
|
* as well as the log files and standard
|
|
* handles etc. Save the limit we want to set in case
|
|
* we are running on an OS that doesn't support this limit (AIX)
|
|
* which always returns RLIM_INFINITY for rlp.rlim_max.
|
|
*/
|
|
|
|
/* Try raising the hard (max) limit to the requested amount. */
|
|
|
|
#if defined(RLIM_INFINITY)
|
|
if (rlp.rlim_max != RLIM_INFINITY) {
|
|
int orig_max = rlp.rlim_max;
|
|
|
|
if ( rlp.rlim_max < requested_max )
|
|
rlp.rlim_max = requested_max;
|
|
|
|
/* This failing is not an error - many systems (Linux) don't
|
|
support our default request of 10,000 open files. JRA. */
|
|
|
|
if(setrlimit(RLIMIT_NOFILE, &rlp)) {
|
|
DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
|
|
(int)rlp.rlim_max, strerror(errno) ));
|
|
|
|
/* Set failed - restore original value from get. */
|
|
rlp.rlim_max = orig_max;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Now try setting the soft (current) limit. */
|
|
|
|
saved_current_limit = rlp.rlim_cur = MIN(requested_max,rlp.rlim_max);
|
|
|
|
if(setrlimit(RLIMIT_NOFILE, &rlp)) {
|
|
DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
|
|
(int)rlp.rlim_cur, strerror(errno) ));
|
|
/* just guess... */
|
|
return saved_current_limit;
|
|
}
|
|
|
|
if(getrlimit(RLIMIT_NOFILE, &rlp)) {
|
|
DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
|
|
strerror(errno) ));
|
|
/* just guess... */
|
|
return saved_current_limit;
|
|
}
|
|
|
|
#if defined(RLIM_INFINITY)
|
|
if(rlp.rlim_cur == RLIM_INFINITY)
|
|
return saved_current_limit;
|
|
#endif
|
|
|
|
if((int)rlp.rlim_cur > saved_current_limit)
|
|
return saved_current_limit;
|
|
|
|
return rlp.rlim_cur;
|
|
#else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
|
|
/*
|
|
* No way to know - just guess...
|
|
*/
|
|
return requested_max;
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************
|
|
Possibly replace mkstemp if it is broken.
|
|
*****************************************************************/
|
|
|
|
int smb_mkstemp(char *name_template)
|
|
{
|
|
#if HAVE_SECURE_MKSTEMP
|
|
return mkstemp(name_template);
|
|
#else
|
|
/* have a reasonable go at emulating it. Hope that
|
|
the system mktemp() isn't completly hopeless */
|
|
char *p = mktemp(name_template);
|
|
if (!p)
|
|
return -1;
|
|
return open(p, O_CREAT|O_EXCL|O_RDWR, 0600);
|
|
#endif
|
|
}
|
|
|
|
/*****************************************************************
|
|
malloc that aborts with smb_panic on fail or zero size.
|
|
*****************************************************************/
|
|
|
|
void *smb_xmalloc_array(size_t size, unsigned int count)
|
|
{
|
|
void *p;
|
|
if (size == 0) {
|
|
smb_panic("smb_xmalloc_array: called with zero size");
|
|
}
|
|
if (count >= MAX_ALLOC_SIZE/size) {
|
|
smb_panic("smb_xmalloc_array: alloc size too large");
|
|
}
|
|
if ((p = SMB_MALLOC(size*count)) == NULL) {
|
|
DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
|
|
(unsigned long)size, (unsigned long)count));
|
|
smb_panic("smb_xmalloc_array: malloc failed");
|
|
}
|
|
return p;
|
|
}
|
|
|
|
/**
|
|
Memdup with smb_panic on fail.
|
|
**/
|
|
|
|
void *smb_xmemdup(const void *p, size_t size)
|
|
{
|
|
void *p2;
|
|
p2 = SMB_XMALLOC_ARRAY(unsigned char,size);
|
|
memcpy(p2, p, size);
|
|
return p2;
|
|
}
|
|
|
|
/**
|
|
strdup that aborts on malloc fail.
|
|
**/
|
|
|
|
char *smb_xstrdup(const char *s)
|
|
{
|
|
#if defined(PARANOID_MALLOC_CHECKER)
|
|
#ifdef strdup
|
|
#undef strdup
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef HAVE_STRDUP
|
|
#define strdup rep_strdup
|
|
#endif
|
|
|
|
char *s1 = strdup(s);
|
|
#if defined(PARANOID_MALLOC_CHECKER)
|
|
#ifdef strdup
|
|
#undef strdup
|
|
#endif
|
|
#define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY
|
|
#endif
|
|
if (!s1) {
|
|
smb_panic("smb_xstrdup: malloc failed");
|
|
}
|
|
return s1;
|
|
|
|
}
|
|
|
|
/**
|
|
strndup that aborts on malloc fail.
|
|
**/
|
|
|
|
char *smb_xstrndup(const char *s, size_t n)
|
|
{
|
|
#if defined(PARANOID_MALLOC_CHECKER)
|
|
#ifdef strndup
|
|
#undef strndup
|
|
#endif
|
|
#endif
|
|
|
|
#if (defined(BROKEN_STRNDUP) || !defined(HAVE_STRNDUP))
|
|
#undef HAVE_STRNDUP
|
|
#define strndup rep_strndup
|
|
#endif
|
|
|
|
char *s1 = strndup(s, n);
|
|
#if defined(PARANOID_MALLOC_CHECKER)
|
|
#ifdef strndup
|
|
#undef strndup
|
|
#endif
|
|
#define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY
|
|
#endif
|
|
if (!s1) {
|
|
smb_panic("smb_xstrndup: malloc failed");
|
|
}
|
|
return s1;
|
|
}
|
|
|
|
/*
|
|
vasprintf that aborts on malloc fail
|
|
*/
|
|
|
|
int smb_xvasprintf(char **ptr, const char *format, va_list ap)
|
|
{
|
|
int n;
|
|
va_list ap2;
|
|
|
|
VA_COPY(ap2, ap);
|
|
|
|
n = vasprintf(ptr, format, ap2);
|
|
if (n == -1 || ! *ptr) {
|
|
smb_panic("smb_xvasprintf: out of memory");
|
|
}
|
|
va_end(ap2);
|
|
return n;
|
|
}
|
|
|
|
/*****************************************************************
|
|
Like strdup but for memory.
|
|
*****************************************************************/
|
|
|
|
void *memdup(const void *p, size_t size)
|
|
{
|
|
void *p2;
|
|
if (size == 0)
|
|
return NULL;
|
|
p2 = SMB_MALLOC(size);
|
|
if (!p2)
|
|
return NULL;
|
|
memcpy(p2, p, size);
|
|
return p2;
|
|
}
|
|
|
|
/*****************************************************************
|
|
Get local hostname and cache result.
|
|
*****************************************************************/
|
|
|
|
char *myhostname(void)
|
|
{
|
|
static char *ret;
|
|
if (ret == NULL) {
|
|
/* This is cached forever so
|
|
* use NULL talloc ctx. */
|
|
ret = get_myname(NULL);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*****************************************************************
|
|
A useful function for returning a path in the Samba pid directory.
|
|
*****************************************************************/
|
|
|
|
static char *xx_path(const char *name, const char *rootpath)
|
|
{
|
|
char *fname = NULL;
|
|
|
|
fname = talloc_strdup(talloc_tos(), rootpath);
|
|
if (!fname) {
|
|
return NULL;
|
|
}
|
|
trim_string(fname,"","/");
|
|
|
|
if (!directory_exist(fname,NULL)) {
|
|
mkdir(fname,0755);
|
|
}
|
|
|
|
return talloc_asprintf(talloc_tos(),
|
|
"%s/%s",
|
|
fname,
|
|
name);
|
|
}
|
|
|
|
/*****************************************************************
|
|
A useful function for returning a path in the Samba lock directory.
|
|
*****************************************************************/
|
|
|
|
char *lock_path(const char *name)
|
|
{
|
|
return xx_path(name, lp_lockdir());
|
|
}
|
|
|
|
/*****************************************************************
|
|
A useful function for returning a path in the Samba pid directory.
|
|
*****************************************************************/
|
|
|
|
char *pid_path(const char *name)
|
|
{
|
|
return xx_path(name, lp_piddir());
|
|
}
|
|
|
|
/**
|
|
* @brief Returns an absolute path to a file in the Samba lib directory.
|
|
*
|
|
* @param name File to find, relative to LIBDIR.
|
|
*
|
|
* @retval Pointer to a string containing the full path.
|
|
**/
|
|
|
|
char *lib_path(const char *name)
|
|
{
|
|
return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name);
|
|
}
|
|
|
|
/**
|
|
* @brief Returns an absolute path to a file in the Samba data directory.
|
|
*
|
|
* @param name File to find, relative to CODEPAGEDIR.
|
|
*
|
|
* @retval Pointer to a talloc'ed string containing the full path.
|
|
**/
|
|
|
|
char *data_path(const char *name)
|
|
{
|
|
return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name);
|
|
}
|
|
|
|
/*****************************************************************
|
|
a useful function for returning a path in the Samba state directory
|
|
*****************************************************************/
|
|
|
|
char *state_path(const char *name)
|
|
{
|
|
return xx_path(name, get_dyn_STATEDIR());
|
|
}
|
|
|
|
/**
|
|
* @brief Returns the platform specific shared library extension.
|
|
*
|
|
* @retval Pointer to a const char * containing the extension.
|
|
**/
|
|
|
|
const char *shlib_ext(void)
|
|
{
|
|
return get_dyn_SHLIBEXT();
|
|
}
|
|
|
|
/*******************************************************************
|
|
Given a filename - get its directory name
|
|
NB: Returned in static storage. Caveats:
|
|
o If caller wishes to preserve, they should copy.
|
|
********************************************************************/
|
|
|
|
char *parent_dirname(const char *path)
|
|
{
|
|
char *parent;
|
|
|
|
if (!parent_dirname_talloc(talloc_tos(), path, &parent, NULL)) {
|
|
return NULL;
|
|
}
|
|
|
|
return parent;
|
|
}
|
|
|
|
bool parent_dirname_talloc(TALLOC_CTX *mem_ctx, const char *dir,
|
|
char **parent, const char **name)
|
|
{
|
|
char *p;
|
|
ptrdiff_t len;
|
|
|
|
p = strrchr_m(dir, '/'); /* Find final '/', if any */
|
|
|
|
if (p == NULL) {
|
|
if (!(*parent = talloc_strdup(mem_ctx, "."))) {
|
|
return False;
|
|
}
|
|
if (name) {
|
|
*name = "";
|
|
}
|
|
return True;
|
|
}
|
|
|
|
len = p-dir;
|
|
|
|
if (!(*parent = TALLOC_ARRAY(mem_ctx, char, len+1))) {
|
|
return False;
|
|
}
|
|
memcpy(*parent, dir, len);
|
|
(*parent)[len] = '\0';
|
|
|
|
if (name) {
|
|
*name = p+1;
|
|
}
|
|
return True;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Determine if a pattern contains any Microsoft wildcard characters.
|
|
*******************************************************************/
|
|
|
|
bool ms_has_wild(const char *s)
|
|
{
|
|
char c;
|
|
|
|
if (lp_posix_pathnames()) {
|
|
/* With posix pathnames no characters are wild. */
|
|
return False;
|
|
}
|
|
|
|
while ((c = *s++)) {
|
|
switch (c) {
|
|
case '*':
|
|
case '?':
|
|
case '<':
|
|
case '>':
|
|
case '"':
|
|
return True;
|
|
}
|
|
}
|
|
return False;
|
|
}
|
|
|
|
bool ms_has_wild_w(const smb_ucs2_t *s)
|
|
{
|
|
smb_ucs2_t c;
|
|
if (!s) return False;
|
|
while ((c = *s++)) {
|
|
switch (c) {
|
|
case UCS2_CHAR('*'):
|
|
case UCS2_CHAR('?'):
|
|
case UCS2_CHAR('<'):
|
|
case UCS2_CHAR('>'):
|
|
case UCS2_CHAR('"'):
|
|
return True;
|
|
}
|
|
}
|
|
return False;
|
|
}
|
|
|
|
/*******************************************************************
|
|
A wrapper that handles case sensitivity and the special handling
|
|
of the ".." name.
|
|
*******************************************************************/
|
|
|
|
bool mask_match(const char *string, const char *pattern, bool is_case_sensitive)
|
|
{
|
|
if (strcmp(string,"..") == 0)
|
|
string = ".";
|
|
if (strcmp(pattern,".") == 0)
|
|
return False;
|
|
|
|
return ms_fnmatch(pattern, string, Protocol <= PROTOCOL_LANMAN2, is_case_sensitive) == 0;
|
|
}
|
|
|
|
/*******************************************************************
|
|
A wrapper that handles case sensitivity and the special handling
|
|
of the ".." name. Varient that is only called by old search code which requires
|
|
pattern translation.
|
|
*******************************************************************/
|
|
|
|
bool mask_match_search(const char *string, const char *pattern, bool is_case_sensitive)
|
|
{
|
|
if (strcmp(string,"..") == 0)
|
|
string = ".";
|
|
if (strcmp(pattern,".") == 0)
|
|
return False;
|
|
|
|
return ms_fnmatch(pattern, string, True, is_case_sensitive) == 0;
|
|
}
|
|
|
|
/*******************************************************************
|
|
A wrapper that handles a list of patters and calls mask_match()
|
|
on each. Returns True if any of the patterns match.
|
|
*******************************************************************/
|
|
|
|
bool mask_match_list(const char *string, char **list, int listLen, bool is_case_sensitive)
|
|
{
|
|
while (listLen-- > 0) {
|
|
if (mask_match(string, *list++, is_case_sensitive))
|
|
return True;
|
|
}
|
|
return False;
|
|
}
|
|
|
|
/*********************************************************
|
|
Recursive routine that is called by unix_wild_match.
|
|
*********************************************************/
|
|
|
|
static bool unix_do_match(const char *regexp, const char *str)
|
|
{
|
|
const char *p;
|
|
|
|
for( p = regexp; *p && *str; ) {
|
|
|
|
switch(*p) {
|
|
case '?':
|
|
str++;
|
|
p++;
|
|
break;
|
|
|
|
case '*':
|
|
|
|
/*
|
|
* Look for a character matching
|
|
* the one after the '*'.
|
|
*/
|
|
p++;
|
|
if(!*p)
|
|
return true; /* Automatic match */
|
|
while(*str) {
|
|
|
|
while(*str && (*p != *str))
|
|
str++;
|
|
|
|
/*
|
|
* Patch from weidel@multichart.de. In the case of the regexp
|
|
* '*XX*' we want to ensure there are at least 2 'X' characters
|
|
* in the string after the '*' for a match to be made.
|
|
*/
|
|
|
|
{
|
|
int matchcount=0;
|
|
|
|
/*
|
|
* Eat all the characters that match, but count how many there were.
|
|
*/
|
|
|
|
while(*str && (*p == *str)) {
|
|
str++;
|
|
matchcount++;
|
|
}
|
|
|
|
/*
|
|
* Now check that if the regexp had n identical characters that
|
|
* matchcount had at least that many matches.
|
|
*/
|
|
|
|
while ( *(p+1) && (*(p+1) == *p)) {
|
|
p++;
|
|
matchcount--;
|
|
}
|
|
|
|
if ( matchcount <= 0 )
|
|
return false;
|
|
}
|
|
|
|
str--; /* We've eaten the match char after the '*' */
|
|
|
|
if(unix_do_match(p, str))
|
|
return true;
|
|
|
|
if(!*str)
|
|
return false;
|
|
else
|
|
str++;
|
|
}
|
|
return false;
|
|
|
|
default:
|
|
if(*str != *p)
|
|
return false;
|
|
str++;
|
|
p++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(!*p && !*str)
|
|
return true;
|
|
|
|
if (!*p && str[0] == '.' && str[1] == 0)
|
|
return true;
|
|
|
|
if (!*str && *p == '?') {
|
|
while (*p == '?')
|
|
p++;
|
|
return(!*p);
|
|
}
|
|
|
|
if(!*str && (*p == '*' && p[1] == '\0'))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/*******************************************************************
|
|
Simple case insensitive interface to a UNIX wildcard matcher.
|
|
Returns True if match, False if not.
|
|
*******************************************************************/
|
|
|
|
bool unix_wild_match(const char *pattern, const char *string)
|
|
{
|
|
TALLOC_CTX *ctx = talloc_stackframe();
|
|
char *p2;
|
|
char *s2;
|
|
char *p;
|
|
bool ret = false;
|
|
|
|
p2 = talloc_strdup(ctx,pattern);
|
|
s2 = talloc_strdup(ctx,string);
|
|
if (!p2 || !s2) {
|
|
TALLOC_FREE(ctx);
|
|
return false;
|
|
}
|
|
strlower_m(p2);
|
|
strlower_m(s2);
|
|
|
|
/* Remove any *? and ** from the pattern as they are meaningless */
|
|
for(p = p2; *p; p++) {
|
|
while( *p == '*' && (p[1] == '?' ||p[1] == '*')) {
|
|
memmove(&p[1], &p[2], strlen(&p[2])+1);
|
|
}
|
|
}
|
|
|
|
if (strequal(p2,"*")) {
|
|
TALLOC_FREE(ctx);
|
|
return true;
|
|
}
|
|
|
|
ret = unix_do_match(p2, s2);
|
|
TALLOC_FREE(ctx);
|
|
return ret;
|
|
}
|
|
|
|
/**********************************************************************
|
|
Converts a name to a fully qualified domain name.
|
|
Returns true if lookup succeeded, false if not (then fqdn is set to name)
|
|
Note we deliberately use gethostbyname here, not getaddrinfo as we want
|
|
to examine the h_aliases and I don't know how to do that with getaddrinfo.
|
|
***********************************************************************/
|
|
|
|
bool name_to_fqdn(fstring fqdn, const char *name)
|
|
{
|
|
char *full = NULL;
|
|
struct hostent *hp = gethostbyname(name);
|
|
|
|
if (!hp || !hp->h_name || !*hp->h_name) {
|
|
DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name));
|
|
fstrcpy(fqdn, name);
|
|
return false;
|
|
}
|
|
|
|
/* Find out if the fqdn is returned as an alias
|
|
* to cope with /etc/hosts files where the first
|
|
* name is not the fqdn but the short name */
|
|
if (hp->h_aliases && (! strchr_m(hp->h_name, '.'))) {
|
|
int i;
|
|
for (i = 0; hp->h_aliases[i]; i++) {
|
|
if (strchr_m(hp->h_aliases[i], '.')) {
|
|
full = hp->h_aliases[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (full && (StrCaseCmp(full, "localhost.localdomain") == 0)) {
|
|
DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
|
|
DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
|
|
DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
|
|
DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
|
|
full = hp->h_name;
|
|
}
|
|
if (!full) {
|
|
full = hp->h_name;
|
|
}
|
|
|
|
DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name, full));
|
|
fstrcpy(fqdn, full);
|
|
return true;
|
|
}
|
|
|
|
/**********************************************************************
|
|
Extension to talloc_get_type: Abort on type mismatch
|
|
***********************************************************************/
|
|
|
|
void *talloc_check_name_abort(const void *ptr, const char *name)
|
|
{
|
|
void *result;
|
|
|
|
result = talloc_check_name(ptr, name);
|
|
if (result != NULL)
|
|
return result;
|
|
|
|
DEBUG(0, ("Talloc type mismatch, expected %s, got %s\n",
|
|
name, talloc_get_name(ptr)));
|
|
smb_panic("talloc type mismatch");
|
|
/* Keep the compiler happy */
|
|
return NULL;
|
|
}
|
|
|
|
uint32 map_share_mode_to_deny_mode(uint32 share_access, uint32 private_options)
|
|
{
|
|
switch (share_access & ~FILE_SHARE_DELETE) {
|
|
case FILE_SHARE_NONE:
|
|
return DENY_ALL;
|
|
case FILE_SHARE_READ:
|
|
return DENY_WRITE;
|
|
case FILE_SHARE_WRITE:
|
|
return DENY_READ;
|
|
case FILE_SHARE_READ|FILE_SHARE_WRITE:
|
|
return DENY_NONE;
|
|
}
|
|
if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
|
|
return DENY_DOS;
|
|
} else if (private_options & NTCREATEX_OPTIONS_PRIVATE_DENY_FCB) {
|
|
return DENY_FCB;
|
|
}
|
|
|
|
return (uint32)-1;
|
|
}
|
|
|
|
pid_t procid_to_pid(const struct server_id *proc)
|
|
{
|
|
return proc->pid;
|
|
}
|
|
|
|
static uint32 my_vnn = NONCLUSTER_VNN;
|
|
|
|
void set_my_vnn(uint32 vnn)
|
|
{
|
|
DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn));
|
|
my_vnn = vnn;
|
|
}
|
|
|
|
uint32 get_my_vnn(void)
|
|
{
|
|
return my_vnn;
|
|
}
|
|
|
|
struct server_id pid_to_procid(pid_t pid)
|
|
{
|
|
struct server_id result;
|
|
result.pid = pid;
|
|
#ifdef CLUSTER_SUPPORT
|
|
result.vnn = my_vnn;
|
|
#endif
|
|
return result;
|
|
}
|
|
|
|
struct server_id procid_self(void)
|
|
{
|
|
return pid_to_procid(sys_getpid());
|
|
}
|
|
|
|
struct server_id server_id_self(void)
|
|
{
|
|
return procid_self();
|
|
}
|
|
|
|
bool procid_equal(const struct server_id *p1, const struct server_id *p2)
|
|
{
|
|
if (p1->pid != p2->pid)
|
|
return False;
|
|
#ifdef CLUSTER_SUPPORT
|
|
if (p1->vnn != p2->vnn)
|
|
return False;
|
|
#endif
|
|
return True;
|
|
}
|
|
|
|
bool cluster_id_equal(const struct server_id *id1,
|
|
const struct server_id *id2)
|
|
{
|
|
return procid_equal(id1, id2);
|
|
}
|
|
|
|
bool procid_is_me(const struct server_id *pid)
|
|
{
|
|
if (pid->pid != sys_getpid())
|
|
return False;
|
|
#ifdef CLUSTER_SUPPORT
|
|
if (pid->vnn != my_vnn)
|
|
return False;
|
|
#endif
|
|
return True;
|
|
}
|
|
|
|
struct server_id interpret_pid(const char *pid_string)
|
|
{
|
|
#ifdef CLUSTER_SUPPORT
|
|
unsigned int vnn, pid;
|
|
struct server_id result;
|
|
if (sscanf(pid_string, "%u:%u", &vnn, &pid) == 2) {
|
|
result.vnn = vnn;
|
|
result.pid = pid;
|
|
}
|
|
else if (sscanf(pid_string, "%u", &pid) == 1) {
|
|
result.vnn = NONCLUSTER_VNN;
|
|
result.pid = pid;
|
|
}
|
|
else {
|
|
result.vnn = NONCLUSTER_VNN;
|
|
result.pid = -1;
|
|
}
|
|
return result;
|
|
#else
|
|
return pid_to_procid(atoi(pid_string));
|
|
#endif
|
|
}
|
|
|
|
char *procid_str(TALLOC_CTX *mem_ctx, const struct server_id *pid)
|
|
{
|
|
#ifdef CLUSTER_SUPPORT
|
|
if (pid->vnn == NONCLUSTER_VNN) {
|
|
return talloc_asprintf(mem_ctx,
|
|
"%d",
|
|
(int)pid->pid);
|
|
}
|
|
else {
|
|
return talloc_asprintf(mem_ctx,
|
|
"%u:%d",
|
|
(unsigned)pid->vnn,
|
|
(int)pid->pid);
|
|
}
|
|
#else
|
|
return talloc_asprintf(mem_ctx,
|
|
"%d",
|
|
(int)pid->pid);
|
|
#endif
|
|
}
|
|
|
|
char *procid_str_static(const struct server_id *pid)
|
|
{
|
|
return procid_str(talloc_tos(), pid);
|
|
}
|
|
|
|
bool procid_valid(const struct server_id *pid)
|
|
{
|
|
return (pid->pid != -1);
|
|
}
|
|
|
|
bool procid_is_local(const struct server_id *pid)
|
|
{
|
|
#ifdef CLUSTER_SUPPORT
|
|
return pid->vnn == my_vnn;
|
|
#else
|
|
return True;
|
|
#endif
|
|
}
|
|
|
|
int this_is_smp(void)
|
|
{
|
|
#if defined(HAVE_SYSCONF)
|
|
|
|
#if defined(SYSCONF_SC_NPROC_ONLN)
|
|
return (sysconf(_SC_NPROC_ONLN) > 1) ? 1 : 0;
|
|
#elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
|
|
return (sysconf(_SC_NPROCESSORS_ONLN) > 1) ? 1 : 0;
|
|
#else
|
|
return 0;
|
|
#endif
|
|
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
/****************************************************************
|
|
Check if an offset into a buffer is safe.
|
|
If this returns True it's safe to indirect into the byte at
|
|
pointer ptr+off.
|
|
****************************************************************/
|
|
|
|
bool is_offset_safe(const char *buf_base, size_t buf_len, char *ptr, size_t off)
|
|
{
|
|
const char *end_base = buf_base + buf_len;
|
|
char *end_ptr = ptr + off;
|
|
|
|
if (!buf_base || !ptr) {
|
|
return False;
|
|
}
|
|
|
|
if (end_base < buf_base || end_ptr < ptr) {
|
|
return False; /* wrap. */
|
|
}
|
|
|
|
if (end_ptr < end_base) {
|
|
return True;
|
|
}
|
|
return False;
|
|
}
|
|
|
|
/****************************************************************
|
|
Return a safe pointer into a buffer, or NULL.
|
|
****************************************************************/
|
|
|
|
char *get_safe_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
|
|
{
|
|
return is_offset_safe(buf_base, buf_len, ptr, off) ?
|
|
ptr + off : NULL;
|
|
}
|
|
|
|
/****************************************************************
|
|
Return a safe pointer into a string within a buffer, or NULL.
|
|
****************************************************************/
|
|
|
|
char *get_safe_str_ptr(const char *buf_base, size_t buf_len, char *ptr, size_t off)
|
|
{
|
|
if (!is_offset_safe(buf_base, buf_len, ptr, off)) {
|
|
return NULL;
|
|
}
|
|
/* Check if a valid string exists at this offset. */
|
|
if (skip_string(buf_base,buf_len, ptr + off) == NULL) {
|
|
return NULL;
|
|
}
|
|
return ptr + off;
|
|
}
|
|
|
|
/****************************************************************
|
|
Return an SVAL at a pointer, or failval if beyond the end.
|
|
****************************************************************/
|
|
|
|
int get_safe_SVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
|
|
{
|
|
/*
|
|
* Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
|
|
* NOT ptr[2].
|
|
*/
|
|
if (!is_offset_safe(buf_base, buf_len, ptr, off+1)) {
|
|
return failval;
|
|
}
|
|
return SVAL(ptr,off);
|
|
}
|
|
|
|
/****************************************************************
|
|
Return an IVAL at a pointer, or failval if beyond the end.
|
|
****************************************************************/
|
|
|
|
int get_safe_IVAL(const char *buf_base, size_t buf_len, char *ptr, size_t off, int failval)
|
|
{
|
|
/*
|
|
* Note we use off+3 here, not off+4 as IVAL accesses
|
|
* ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
|
|
*/
|
|
if (!is_offset_safe(buf_base, buf_len, ptr, off+3)) {
|
|
return failval;
|
|
}
|
|
return IVAL(ptr,off);
|
|
}
|
|
|
|
/****************************************************************
|
|
Split DOM\user into DOM and user. Do not mix with winbind variants of that
|
|
call (they take care of winbind separator and other winbind specific settings).
|
|
****************************************************************/
|
|
|
|
void split_domain_user(TALLOC_CTX *mem_ctx,
|
|
const char *full_name,
|
|
char **domain,
|
|
char **user)
|
|
{
|
|
const char *p = NULL;
|
|
|
|
p = strchr_m(full_name, '\\');
|
|
|
|
if (p != NULL) {
|
|
*domain = talloc_strndup(mem_ctx, full_name,
|
|
PTR_DIFF(p, full_name));
|
|
*user = talloc_strdup(mem_ctx, p+1);
|
|
} else {
|
|
*domain = talloc_strdup(mem_ctx, "");
|
|
*user = talloc_strdup(mem_ctx, full_name);
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
|
|
Disable these now we have checked all code paths and ensured
|
|
NULL returns on zero request. JRA.
|
|
|
|
/****************************************************************
|
|
talloc wrapper functions that guarentee a null pointer return
|
|
if size == 0.
|
|
****************************************************************/
|
|
|
|
#ifndef MAX_TALLOC_SIZE
|
|
#define MAX_TALLOC_SIZE 0x10000000
|
|
#endif
|
|
|
|
/*
|
|
* talloc and zero memory.
|
|
* - returns NULL if size is zero.
|
|
*/
|
|
|
|
void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name)
|
|
{
|
|
void *p;
|
|
|
|
if (size == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
p = talloc_named_const(ctx, size, name);
|
|
|
|
if (p) {
|
|
memset(p, '\0', size);
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* memdup with a talloc.
|
|
* - returns NULL if size is zero.
|
|
*/
|
|
|
|
void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name)
|
|
{
|
|
void *newp;
|
|
|
|
if (size == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
newp = talloc_named_const(t, size, name);
|
|
if (newp) {
|
|
memcpy(newp, p, size);
|
|
}
|
|
|
|
return newp;
|
|
}
|
|
|
|
/*
|
|
* alloc an array, checking for integer overflow in the array size.
|
|
* - returns NULL if count or el_size are zero.
|
|
*/
|
|
|
|
void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
|
|
{
|
|
if (count >= MAX_TALLOC_SIZE/el_size) {
|
|
return NULL;
|
|
}
|
|
|
|
if (el_size == 0 || count == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
return talloc_named_const(ctx, el_size * count, name);
|
|
}
|
|
|
|
/*
|
|
* alloc an zero array, checking for integer overflow in the array size
|
|
* - returns NULL if count or el_size are zero.
|
|
*/
|
|
|
|
void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name)
|
|
{
|
|
if (count >= MAX_TALLOC_SIZE/el_size) {
|
|
return NULL;
|
|
}
|
|
|
|
if (el_size == 0 || count == 0) {
|
|
return NULL;
|
|
}
|
|
|
|
return _talloc_zero(ctx, el_size * count, name);
|
|
}
|
|
|
|
/*
|
|
* Talloc wrapper that returns NULL if size == 0.
|
|
*/
|
|
void *talloc_zeronull(const void *context, size_t size, const char *name)
|
|
{
|
|
if (size == 0) {
|
|
return NULL;
|
|
}
|
|
return talloc_named_const(context, size, name);
|
|
}
|
|
#endif
|
|
|
|
/* Split a path name into filename and stream name components. Canonicalise
|
|
* such that an implicit $DATA token is always explicit.
|
|
*
|
|
* The "specification" of this function can be found in the
|
|
* run_local_stream_name() function in torture.c, I've tried those
|
|
* combinations against a W2k3 server.
|
|
*/
|
|
|
|
NTSTATUS split_ntfs_stream_name(TALLOC_CTX *mem_ctx, const char *fname,
|
|
char **pbase, char **pstream)
|
|
{
|
|
char *base = NULL;
|
|
char *stream = NULL;
|
|
char *sname; /* stream name */
|
|
const char *stype; /* stream type */
|
|
|
|
DEBUG(10, ("split_ntfs_stream_name called for [%s]\n", fname));
|
|
|
|
sname = strchr_m(fname, ':');
|
|
|
|
if (lp_posix_pathnames() || (sname == NULL)) {
|
|
if (pbase != NULL) {
|
|
base = talloc_strdup(mem_ctx, fname);
|
|
NT_STATUS_HAVE_NO_MEMORY(base);
|
|
}
|
|
goto done;
|
|
}
|
|
|
|
if (pbase != NULL) {
|
|
base = talloc_strndup(mem_ctx, fname, PTR_DIFF(sname, fname));
|
|
NT_STATUS_HAVE_NO_MEMORY(base);
|
|
}
|
|
|
|
sname += 1;
|
|
|
|
stype = strchr_m(sname, ':');
|
|
|
|
if (stype == NULL) {
|
|
sname = talloc_strdup(mem_ctx, sname);
|
|
stype = "$DATA";
|
|
}
|
|
else {
|
|
if (StrCaseCmp(stype, ":$DATA") != 0) {
|
|
/*
|
|
* If there is an explicit stream type, so far we only
|
|
* allow $DATA. Is there anything else allowed? -- vl
|
|
*/
|
|
DEBUG(10, ("[%s] is an invalid stream type\n", stype));
|
|
TALLOC_FREE(base);
|
|
return NT_STATUS_OBJECT_NAME_INVALID;
|
|
}
|
|
sname = talloc_strndup(mem_ctx, sname, PTR_DIFF(stype, sname));
|
|
stype += 1;
|
|
}
|
|
|
|
if (sname == NULL) {
|
|
TALLOC_FREE(base);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
if (sname[0] == '\0') {
|
|
/*
|
|
* no stream name, so no stream
|
|
*/
|
|
goto done;
|
|
}
|
|
|
|
if (pstream != NULL) {
|
|
stream = talloc_asprintf(mem_ctx, "%s:%s", sname, stype);
|
|
if (stream == NULL) {
|
|
TALLOC_FREE(sname);
|
|
TALLOC_FREE(base);
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
/*
|
|
* upper-case the type field
|
|
*/
|
|
strupper_m(strchr_m(stream, ':')+1);
|
|
}
|
|
|
|
done:
|
|
if (pbase != NULL) {
|
|
*pbase = base;
|
|
}
|
|
if (pstream != NULL) {
|
|
*pstream = stream;
|
|
}
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
bool is_valid_policy_hnd(const POLICY_HND *hnd)
|
|
{
|
|
POLICY_HND tmp;
|
|
ZERO_STRUCT(tmp);
|
|
return (memcmp(&tmp, hnd, sizeof(tmp)) != 0);
|
|
}
|
|
|