2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Tim Potter 2000-2001
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 /* the last IP received from */
25 struct in_addr lastip
;
27 /* the last port received from */
30 int smb_read_error
= 0;
32 /****************************************************************************
33 Determine if a file descriptor is in fact a socket.
34 ****************************************************************************/
36 BOOL
is_a_socket(int fd
)
40 return(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&v
, &l
) == 0);
43 enum SOCK_OPT_TYPES
{OPT_BOOL
,OPT_INT
,OPT_ON
};
45 typedef struct smb_socket_option
{
53 static const smb_socket_option socket_options
[] = {
54 {"SO_KEEPALIVE", SOL_SOCKET
, SO_KEEPALIVE
, 0, OPT_BOOL
},
55 {"SO_REUSEADDR", SOL_SOCKET
, SO_REUSEADDR
, 0, OPT_BOOL
},
56 {"SO_BROADCAST", SOL_SOCKET
, SO_BROADCAST
, 0, OPT_BOOL
},
58 {"TCP_NODELAY", IPPROTO_TCP
, TCP_NODELAY
, 0, OPT_BOOL
},
61 {"IPTOS_LOWDELAY", IPPROTO_IP
, IP_TOS
, IPTOS_LOWDELAY
, OPT_ON
},
63 #ifdef IPTOS_THROUGHPUT
64 {"IPTOS_THROUGHPUT", IPPROTO_IP
, IP_TOS
, IPTOS_THROUGHPUT
, OPT_ON
},
67 {"SO_REUSEPORT", SOL_SOCKET
, SO_REUSEPORT
, 0, OPT_BOOL
},
70 {"SO_SNDBUF", SOL_SOCKET
, SO_SNDBUF
, 0, OPT_INT
},
73 {"SO_RCVBUF", SOL_SOCKET
, SO_RCVBUF
, 0, OPT_INT
},
76 {"SO_SNDLOWAT", SOL_SOCKET
, SO_SNDLOWAT
, 0, OPT_INT
},
79 {"SO_RCVLOWAT", SOL_SOCKET
, SO_RCVLOWAT
, 0, OPT_INT
},
82 {"SO_SNDTIMEO", SOL_SOCKET
, SO_SNDTIMEO
, 0, OPT_INT
},
85 {"SO_RCVTIMEO", SOL_SOCKET
, SO_RCVTIMEO
, 0, OPT_INT
},
89 /****************************************************************************
91 ****************************************************************************/
93 static void print_socket_options(int s
)
96 const smb_socket_option
*p
= &socket_options
[0];
98 /* wrapped in if statement to prevent streams leak in SCO Openserver 5.0 */
99 /* reported on samba-technical --jerry */
100 if ( DEBUGLEVEL
>= 5 ) {
101 for (; p
->name
!= NULL
; p
++) {
102 if (getsockopt(s
, p
->level
, p
->option
, (void *)&value
, &vlen
) == -1) {
103 DEBUG(5,("Could not test socket option %s.\n", p
->name
));
105 DEBUG(5,("socket option %s = %d\n",p
->name
,value
));
111 /****************************************************************************
112 Set user socket options.
113 ****************************************************************************/
115 void set_socket_options(int fd
, const char *options
)
119 while (next_token(&options
,tok
," \t,", sizeof(tok
))) {
123 BOOL got_value
= False
;
125 if ((p
= strchr_m(tok
,'='))) {
131 for (i
=0;socket_options
[i
].name
;i
++)
132 if (strequal(socket_options
[i
].name
,tok
))
135 if (!socket_options
[i
].name
) {
136 DEBUG(0,("Unknown socket option %s\n",tok
));
140 switch (socket_options
[i
].opttype
) {
143 ret
= setsockopt(fd
,socket_options
[i
].level
,
144 socket_options
[i
].option
,(char *)&value
,sizeof(int));
149 DEBUG(0,("syntax error - %s does not take a value\n",tok
));
152 int on
= socket_options
[i
].value
;
153 ret
= setsockopt(fd
,socket_options
[i
].level
,
154 socket_options
[i
].option
,(char *)&on
,sizeof(int));
160 DEBUG(0,("Failed to set socket option %s (Error %s)\n",tok
, strerror(errno
) ));
163 print_socket_options(fd
);
166 /****************************************************************************
168 ****************************************************************************/
170 ssize_t
read_udp_socket(int fd
,char *buf
,size_t len
)
173 struct sockaddr_in sock
;
174 socklen_t socklen
= sizeof(sock
);
176 memset((char *)&sock
,'\0',socklen
);
177 memset((char *)&lastip
,'\0',sizeof(lastip
));
178 ret
= (ssize_t
)sys_recvfrom(fd
,buf
,len
,0,(struct sockaddr
*)&sock
,&socklen
);
180 DEBUG(2,("read socket failed. ERRNO=%s\n",strerror(errno
)));
184 lastip
= sock
.sin_addr
;
185 lastport
= ntohs(sock
.sin_port
);
187 DEBUG(10,("read_udp_socket: lastip %s lastport %d read: %d\n",
188 inet_ntoa(lastip
), lastport
, ret
));
193 /****************************************************************************
194 Read data from a socket with a timout in msec.
195 mincount = if timeout, minimum to read before returning
196 maxcount = number to be read.
197 time_out = timeout in milliseconds
198 ****************************************************************************/
200 ssize_t
read_socket_with_timeout(int fd
,char *buf
,size_t mincnt
,size_t maxcnt
,unsigned int time_out
)
206 struct timeval timeout
;
208 /* just checking .... */
216 if (mincnt
== 0) mincnt
= maxcnt
;
218 while (nread
< mincnt
) {
219 readret
= sys_read(fd
, buf
+ nread
, maxcnt
- nread
);
222 DEBUG(5,("read_socket_with_timeout: blocking read. EOF from client.\n"));
223 smb_read_error
= READ_EOF
;
228 DEBUG(0,("read_socket_with_timeout: read error = %s.\n", strerror(errno
) ));
229 smb_read_error
= READ_ERROR
;
234 return((ssize_t
)nread
);
237 /* Most difficult - timeout read */
238 /* If this is ever called on a disk file and
239 mincnt is greater then the filesize then
240 system performance will suffer severely as
241 select always returns true on disk files */
243 /* Set initial timeout */
244 timeout
.tv_sec
= (time_t)(time_out
/ 1000);
245 timeout
.tv_usec
= (long)(1000 * (time_out
% 1000));
247 for (nread
=0; nread
< mincnt
; ) {
251 selrtn
= sys_select_intr(fd
+1,&fds
,NULL
,NULL
,&timeout
);
255 /* something is wrong. Maybe the socket is dead? */
256 DEBUG(0,("read_socket_with_timeout: timeout read. select error = %s.\n", strerror(errno
) ));
257 smb_read_error
= READ_ERROR
;
261 /* Did we timeout ? */
263 DEBUG(10,("read_socket_with_timeout: timeout read. select timed out.\n"));
264 smb_read_error
= READ_TIMEOUT
;
268 readret
= sys_read(fd
, buf
+nread
, maxcnt
-nread
);
271 /* we got EOF on the file descriptor */
272 DEBUG(5,("read_socket_with_timeout: timeout read. EOF from client.\n"));
273 smb_read_error
= READ_EOF
;
278 /* the descriptor is probably dead */
279 DEBUG(0,("read_socket_with_timeout: timeout read. read error = %s.\n", strerror(errno
) ));
280 smb_read_error
= READ_ERROR
;
287 /* Return the number we got */
288 return (ssize_t
)nread
;
291 /****************************************************************************
292 Read data from the client, reading exactly N bytes.
293 ****************************************************************************/
295 ssize_t
read_data(int fd
,char *buffer
,size_t N
)
303 ret
= sys_read(fd
,buffer
+ total
,N
- total
);
306 DEBUG(10,("read_data: read of %d returned 0. Error = %s\n", (int)(N
- total
), strerror(errno
) ));
307 smb_read_error
= READ_EOF
;
312 DEBUG(0,("read_data: read failure for %d. Error = %s\n", (int)(N
- total
), strerror(errno
) ));
313 smb_read_error
= READ_ERROR
;
318 return (ssize_t
)total
;
321 /****************************************************************************
322 Read data from a socket, reading exactly N bytes.
323 ****************************************************************************/
325 static ssize_t
read_socket_data(int fd
,char *buffer
,size_t N
)
333 ret
= sys_read(fd
,buffer
+ total
,N
- total
);
336 DEBUG(10,("read_socket_data: recv of %d returned 0. Error = %s\n", (int)(N
- total
), strerror(errno
) ));
337 smb_read_error
= READ_EOF
;
342 DEBUG(0,("read_socket_data: recv failure for %d. Error = %s\n", (int)(N
- total
), strerror(errno
) ));
343 smb_read_error
= READ_ERROR
;
348 return (ssize_t
)total
;
351 /****************************************************************************
353 ****************************************************************************/
355 ssize_t
write_data(int fd
,char *buffer
,size_t N
)
361 ret
= sys_write(fd
,buffer
+ total
,N
- total
);
364 DEBUG(0,("write_data: write failure. Error = %s\n", strerror(errno
) ));
372 return (ssize_t
)total
;
375 /****************************************************************************
376 Write data to a socket - use send rather than write.
377 ****************************************************************************/
379 static ssize_t
write_socket_data(int fd
,char *buffer
,size_t N
)
385 ret
= sys_send(fd
,buffer
+ total
,N
- total
,0);
388 DEBUG(0,("write_socket_data: write failure. Error = %s\n", strerror(errno
) ));
396 return (ssize_t
)total
;
399 /****************************************************************************
401 ****************************************************************************/
403 ssize_t
write_socket(int fd
,char *buf
,size_t len
)
407 DEBUG(6,("write_socket(%d,%d)\n",fd
,(int)len
));
408 ret
= write_socket_data(fd
,buf
,len
);
410 DEBUG(6,("write_socket(%d,%d) wrote %d\n",fd
,(int)len
,(int)ret
));
412 DEBUG(0,("write_socket: Error writing %d bytes to socket %d: ERRNO = %s\n",
413 (int)len
, fd
, strerror(errno
) ));
418 /****************************************************************************
419 Send a keepalive packet (rfc1002).
420 ****************************************************************************/
422 BOOL
send_keepalive(int client
)
424 unsigned char buf
[4];
426 buf
[0] = SMBkeepalive
;
427 buf
[1] = buf
[2] = buf
[3] = 0;
429 return(write_socket_data(client
,(char *)buf
,4) == 4);
433 /****************************************************************************
434 Read 4 bytes of a smb packet and return the smb length of the packet.
435 Store the result in the buffer.
436 This version of the function will return a length of zero on receiving
438 Timeout is in milliseconds.
439 ****************************************************************************/
441 static ssize_t
read_smb_length_return_keepalive(int fd
,char *inbuf
,unsigned int timeout
)
449 ok
= (read_socket_with_timeout(fd
,inbuf
,4,4,timeout
) == 4);
451 ok
= (read_socket_data(fd
,inbuf
,4) == 4);
456 len
= smb_len(inbuf
);
457 msg_type
= CVAL(inbuf
,0);
459 if (msg_type
== SMBkeepalive
)
460 DEBUG(5,("Got keepalive packet\n"));
463 DEBUG(10,("got smb length of %d\n",len
));
468 /****************************************************************************
469 Read 4 bytes of a smb packet and return the smb length of the packet.
470 Store the result in the buffer. This version of the function will
471 never return a session keepalive (length of zero).
472 Timeout is in milliseconds.
473 ****************************************************************************/
475 ssize_t
read_smb_length(int fd
,char *inbuf
,unsigned int timeout
)
480 len
= read_smb_length_return_keepalive(fd
, inbuf
, timeout
);
485 /* Ignore session keepalives. */
486 if(CVAL(inbuf
,0) != SMBkeepalive
)
490 DEBUG(10,("read_smb_length: got smb length of %d\n",len
));
495 /****************************************************************************
496 Read an smb from a fd. Note that the buffer *MUST* be of size
497 BUFFER_SIZE+SAFETY_MARGIN.
498 The timeout is in milliseconds.
499 This function will return on receipt of a session keepalive packet.
500 ****************************************************************************/
502 BOOL
receive_smb(int fd
,char *buffer
, unsigned int timeout
)
508 memset(buffer
,'\0',smb_size
+ 100);
510 len
= read_smb_length_return_keepalive(fd
,buffer
,timeout
);
512 DEBUG(10,("receive_smb: length < 0!\n"));
515 * Correct fix. smb_read_error may have already been
516 * set. Only set it here if not already set. Global
517 * variables still suck :-). JRA.
520 if (smb_read_error
== 0)
521 smb_read_error
= READ_ERROR
;
526 * A WRITEX with CAP_LARGE_WRITEX can be 64k worth of data plus 65 bytes
527 * of header. Don't print the error if this fits.... JRA.
530 if (len
> (BUFFER_SIZE
+ LARGE_WRITEX_HDR_SIZE
)) {
531 DEBUG(0,("Invalid packet length! (%d bytes).\n",len
));
532 if (len
> BUFFER_SIZE
+ (SAFETY_MARGIN
/2)) {
535 * Correct fix. smb_read_error may have already been
536 * set. Only set it here if not already set. Global
537 * variables still suck :-). JRA.
540 if (smb_read_error
== 0)
541 smb_read_error
= READ_ERROR
;
547 ret
= read_socket_data(fd
,buffer
+4,len
);
549 if (smb_read_error
== 0)
550 smb_read_error
= READ_ERROR
;
555 /* Check the incoming SMB signature. */
556 if (!srv_check_sign_mac(buffer
)) {
557 DEBUG(0, ("receive_smb: SMB Signature verification failed on incoming packet!\n"));
558 if (smb_read_error
== 0)
559 smb_read_error
= READ_BAD_SIG
;
566 /****************************************************************************
568 ****************************************************************************/
570 BOOL
send_smb(int fd
,char *buffer
)
576 /* Sign the outgoing packet if required. */
577 srv_calculate_sign_mac(buffer
);
579 len
= smb_len(buffer
) + 4;
581 while (nwritten
< len
) {
582 ret
= write_socket(fd
,buffer
+nwritten
,len
- nwritten
);
584 DEBUG(0,("Error writing %d bytes to client. %d. (%s)\n",
585 (int)len
,(int)ret
, strerror(errno
) ));
594 /****************************************************************************
595 Open a socket of the specified type, port, and address for incoming data.
596 ****************************************************************************/
598 int open_socket_in( int type
, int port
, int dlevel
, uint32 socket_addr
, BOOL rebind
)
600 struct sockaddr_in sock
;
603 memset( (char *)&sock
, '\0', sizeof(sock
) );
605 #ifdef HAVE_SOCK_SIN_LEN
606 sock
.sin_len
= sizeof(sock
);
608 sock
.sin_port
= htons( port
);
609 sock
.sin_family
= AF_INET
;
610 sock
.sin_addr
.s_addr
= socket_addr
;
612 res
= socket( AF_INET
, type
, 0 );
615 dbgtext( "open_socket_in(): socket() call failed: " );
616 dbgtext( "%s\n", strerror( errno
) );
621 /* This block sets/clears the SO_REUSEADDR and possibly SO_REUSEPORT. */
623 int val
= rebind
? 1 : 0;
624 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEADDR
,(char *)&val
,sizeof(val
)) == -1 ) {
625 if( DEBUGLVL( dlevel
) ) {
626 dbgtext( "open_socket_in(): setsockopt: " );
627 dbgtext( "SO_REUSEADDR = %s ", val
?"True":"False" );
628 dbgtext( "on port %d failed ", port
);
629 dbgtext( "with error = %s\n", strerror(errno
) );
633 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEPORT
,(char *)&val
,sizeof(val
)) == -1 ) {
634 if( DEBUGLVL( dlevel
) ) {
635 dbgtext( "open_socket_in(): setsockopt: ");
636 dbgtext( "SO_REUSEPORT = %s ", val
?"True":"False" );
637 dbgtext( "on port %d failed ", port
);
638 dbgtext( "with error = %s\n", strerror(errno
) );
641 #endif /* SO_REUSEPORT */
644 /* now we've got a socket - we need to bind it */
645 if( bind( res
, (struct sockaddr
*)&sock
, sizeof(sock
) ) == -1 ) {
646 if( DEBUGLVL(dlevel
) && (port
== SMB_PORT1
|| port
== SMB_PORT2
|| port
== NMB_PORT
) ) {
647 dbgtext( "bind failed on port %d ", port
);
648 dbgtext( "socket_addr = %s.\n", inet_ntoa( sock
.sin_addr
) );
649 dbgtext( "Error = %s\n", strerror(errno
) );
655 DEBUG( 10, ( "bind succeeded on port %d\n", port
) );
660 /****************************************************************************
661 Create an outgoing socket. timeout is in milliseconds.
662 **************************************************************************/
664 int open_socket_out(int type
, struct in_addr
*addr
, int port
,int timeout
)
666 struct sockaddr_in sock_out
;
668 int connect_loop
= 10;
671 /* create a socket to write to */
672 res
= socket(PF_INET
, type
, 0);
674 DEBUG(0,("socket error\n"));
678 if (type
!= SOCK_STREAM
)
681 memset((char *)&sock_out
,'\0',sizeof(sock_out
));
682 putip((char *)&sock_out
.sin_addr
,(char *)addr
);
684 sock_out
.sin_port
= htons( port
);
685 sock_out
.sin_family
= PF_INET
;
687 /* set it non-blocking */
688 set_blocking(res
,False
);
690 DEBUG(3,("Connecting to %s at port %d\n",inet_ntoa(*addr
),port
));
692 /* and connect it to the destination */
695 ret
= connect(res
,(struct sockaddr
*)&sock_out
,sizeof(sock_out
));
697 /* Some systems return EAGAIN when they mean EINPROGRESS */
698 if (ret
< 0 && (errno
== EINPROGRESS
|| errno
== EALREADY
||
699 errno
== EAGAIN
) && (connect_loop
< timeout
) ) {
700 msleep(connect_loop
);
701 connect_loop
+= increment
;
702 if (increment
< 250) {
703 /* After 8 rounds we end up at a max of 255 msec */
709 if (ret
< 0 && (errno
== EINPROGRESS
|| errno
== EALREADY
||
711 DEBUG(1,("timeout connecting to %s:%d\n",inet_ntoa(*addr
),port
));
718 if (ret
< 0 && errno
== EISCONN
) {
725 DEBUG(2,("error connecting to %s:%d (%s)\n",
726 inet_ntoa(*addr
),port
,strerror(errno
)));
731 /* set it blocking again */
732 set_blocking(res
,True
);
737 /****************************************************************************
738 Open a connected UDP socket to host on port
739 **************************************************************************/
741 int open_udp_socket(const char *host
, int port
)
743 int type
= SOCK_DGRAM
;
744 struct sockaddr_in sock_out
;
746 struct in_addr
*addr
;
748 addr
= interpret_addr2(host
);
750 res
= socket(PF_INET
, type
, 0);
755 memset((char *)&sock_out
,'\0',sizeof(sock_out
));
756 putip((char *)&sock_out
.sin_addr
,(char *)addr
);
757 sock_out
.sin_port
= htons(port
);
758 sock_out
.sin_family
= PF_INET
;
760 if (connect(res
,(struct sockaddr
*)&sock_out
,sizeof(sock_out
))) {
769 /* the following 3 client_*() functions are nasty ways of allowing
770 some generic functions to get info that really should be hidden in
771 particular modules */
772 static int client_fd
= -1;
774 void client_setfd(int fd
)
779 char *client_name(void)
781 return get_socket_name(client_fd
,False
);
784 char *client_addr(void)
786 return get_socket_addr(client_fd
);
789 struct in_addr
*client_inaddr(struct sockaddr
*sa
)
791 struct sockaddr_in
*sockin
= (struct sockaddr_in
*) (sa
);
792 int length
= sizeof(*sa
);
794 if (getpeername(client_fd
, sa
, &length
) < 0) {
795 DEBUG(0,("getpeername failed. Error was %s\n", strerror(errno
) ));
799 return &sockin
->sin_addr
;
802 /*******************************************************************
803 Matchname - determine if host name matches IP address. Used to
804 confirm a hostname lookup to prevent spoof attacks.
805 ******************************************************************/
807 static BOOL
matchname(char *remotehost
,struct in_addr addr
)
812 if ((hp
= sys_gethostbyname(remotehost
)) == 0) {
813 DEBUG(0,("sys_gethostbyname(%s): lookup failure.\n", remotehost
));
818 * Make sure that gethostbyname() returns the "correct" host name.
819 * Unfortunately, gethostbyname("localhost") sometimes yields
820 * "localhost.domain". Since the latter host name comes from the
821 * local DNS, we just have to trust it (all bets are off if the local
822 * DNS is perverted). We always check the address list, though.
825 if (strcasecmp(remotehost
, hp
->h_name
)
826 && strcasecmp(remotehost
, "localhost")) {
827 DEBUG(0,("host name/name mismatch: %s != %s\n",
828 remotehost
, hp
->h_name
));
832 /* Look up the host address in the address list we just got. */
833 for (i
= 0; hp
->h_addr_list
[i
]; i
++) {
834 if (memcmp(hp
->h_addr_list
[i
], (char *) & addr
, sizeof(addr
)) == 0)
839 * The host name does not map to the original host address. Perhaps
840 * someone has compromised a name server. More likely someone botched
841 * it, but that could be dangerous, too.
844 DEBUG(0,("host name/address mismatch: %s != %s\n",
845 inet_ntoa(addr
), hp
->h_name
));
849 /*******************************************************************
850 Return the DNS name of the remote end of a socket.
851 ******************************************************************/
853 char *get_socket_name(int fd
, BOOL force_lookup
)
855 static pstring name_buf
;
856 static fstring addr_buf
;
861 /* reverse lookups can be *very* expensive, and in many
862 situations won't work because many networks don't link dhcp
863 with dns. To avoid the delay we avoid the lookup if
865 if (!lp_hostname_lookups() && (force_lookup
== False
)) {
866 return get_socket_addr(fd
);
869 p
= get_socket_addr(fd
);
871 /* it might be the same as the last one - save some DNS work */
872 if (strcmp(p
, addr_buf
) == 0) return name_buf
;
874 pstrcpy(name_buf
,"UNKNOWN");
875 if (fd
== -1) return name_buf
;
877 fstrcpy(addr_buf
, p
);
879 addr
= *interpret_addr2(p
);
881 /* Look up the remote host name. */
882 if ((hp
= gethostbyaddr((char *)&addr
.s_addr
, sizeof(addr
.s_addr
), AF_INET
)) == 0) {
883 DEBUG(1,("Gethostbyaddr failed for %s\n",p
));
884 pstrcpy(name_buf
, p
);
886 pstrcpy(name_buf
,(char *)hp
->h_name
);
887 if (!matchname(name_buf
, addr
)) {
888 DEBUG(0,("Matchname failed on %s %s\n",name_buf
,p
));
889 pstrcpy(name_buf
,"UNKNOWN");
893 alpha_strcpy(name_buf
, name_buf
, "_-.", sizeof(name_buf
));
894 if (strstr(name_buf
,"..")) {
895 pstrcpy(name_buf
, "UNKNOWN");
901 /*******************************************************************
902 Return the IP addr of the remote end of a socket as a string.
903 ******************************************************************/
905 char *get_socket_addr(int fd
)
908 struct sockaddr_in
*sockin
= (struct sockaddr_in
*) (&sa
);
909 int length
= sizeof(sa
);
910 static fstring addr_buf
;
912 fstrcpy(addr_buf
,"0.0.0.0");
918 if (getpeername(fd
, &sa
, &length
) < 0) {
919 DEBUG(0,("getpeername failed. Error was %s\n", strerror(errno
) ));
923 fstrcpy(addr_buf
,(char *)inet_ntoa(sockin
->sin_addr
));
928 /*******************************************************************
929 Create protected unix domain socket.
931 Some unixes cannot set permissions on a ux-dom-sock, so we
932 have to make sure that the directory contains the protection
934 ******************************************************************/
936 int create_pipe_sock(const char *socket_dir
,
937 const char *socket_name
,
940 #ifdef HAVE_UNIXSOCKET
941 struct sockaddr_un sunaddr
;
947 old_umask
= umask(0);
949 /* Create the socket directory or reuse the existing one */
951 if (lstat(socket_dir
, &st
) == -1) {
952 if (errno
== ENOENT
) {
953 /* Create directory */
954 if (mkdir(socket_dir
, dir_perms
) == -1) {
955 DEBUG(0, ("error creating socket directory "
956 "%s: %s\n", socket_dir
,
961 DEBUG(0, ("lstat failed on socket directory %s: %s\n",
962 socket_dir
, strerror(errno
)));
966 /* Check ownership and permission on existing directory */
967 if (!S_ISDIR(st
.st_mode
)) {
968 DEBUG(0, ("socket directory %s isn't a directory\n",
972 if ((st
.st_uid
!= sec_initial_uid()) ||
973 ((st
.st_mode
& 0777) != dir_perms
)) {
974 DEBUG(0, ("invalid permissions on socket directory "
975 "%s\n", socket_dir
));
980 /* Create the socket file */
982 sock
= socket(AF_UNIX
, SOCK_STREAM
, 0);
989 pstr_sprintf(path
, "%s/%s", socket_dir
, socket_name
);
992 memset(&sunaddr
, 0, sizeof(sunaddr
));
993 sunaddr
.sun_family
= AF_UNIX
;
994 safe_strcpy(sunaddr
.sun_path
, path
, sizeof(sunaddr
.sun_path
)-1);
996 if (bind(sock
, (struct sockaddr
*)&sunaddr
, sizeof(sunaddr
)) == -1) {
997 DEBUG(0, ("bind failed on pipe socket %s: %s\n", path
,
1002 if (listen(sock
, 5) == -1) {
1003 DEBUG(0, ("listen failed on pipe socket %s: %s\n", path
,
1019 DEBUG(0, ("create_pipe_sock: No Unix sockets on this system\n"));
1021 #endif /* HAVE_UNIXSOCKET */