2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Tim Potter 2000-2001
6 Copyright (C) Jeremy Allison 1992-2007
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 /****************************************************************************
25 Return true if a string could be an IPv4 address.
26 ****************************************************************************/
28 bool is_ipaddress_v4(const char *str
)
33 ret
= inet_pton(AF_INET
, str
, &dest
);
40 /****************************************************************************
41 Return true if a string could be an IPv4 or IPv6 address.
42 ****************************************************************************/
44 bool is_ipaddress(const char *str
)
48 #if defined(HAVE_IPV6)
49 if (strchr_m(str
, ':')) {
50 char addr
[INET6_ADDRSTRLEN
];
51 struct in6_addr dest6
;
53 char *p
= strchr_m(str
, '%');
56 * Cope with link-local.
57 * This is IP:v6:addr%ifname.
60 if (p
&& (p
> str
) && (if_nametoindex(p
+1) != 0)) {
62 MIN(PTR_DIFF(p
,str
)+1,
66 ret
= inet_pton(AF_INET6
, addr
, &dest6
);
72 return is_ipaddress_v4(str
);
75 /****************************************************************************
76 Is a sockaddr_storage a broadcast address ?
77 ****************************************************************************/
79 bool is_broadcast_addr(const struct sockaddr_storage
*pss
)
81 #if defined(HAVE_IPV6)
82 if (pss
->ss_family
== AF_INET6
) {
83 const struct in6_addr
*sin6
=
84 &((const struct sockaddr_in6
*)pss
)->sin6_addr
;
85 return IN6_IS_ADDR_MULTICAST(sin6
);
88 if (pss
->ss_family
== AF_INET
) {
90 ntohl(((const struct sockaddr_in
*)pss
)->sin_addr
.s_addr
);
91 return addr
== INADDR_BROADCAST
;
96 /*******************************************************************
98 ******************************************************************/
100 static bool interpret_string_addr_internal(struct addrinfo
**ppres
,
101 const char *str
, int flags
)
104 struct addrinfo hints
;
106 memset(&hints
, '\0', sizeof(hints
));
107 /* By default make sure it supports TCP. */
108 hints
.ai_socktype
= SOCK_STREAM
;
109 hints
.ai_flags
= flags
;
111 ret
= getaddrinfo(str
, NULL
,
115 DEBUG(3,("interpret_string_addr_internal: getaddrinfo failed "
116 "for name %s [%s]\n",
118 gai_strerror(ret
) ));
124 /****************************************************************************
125 Interpret an internet address or name into an IP address in 4 byte form.
126 RETURNS IN NETWORK BYTE ORDER (big endian).
127 ****************************************************************************/
129 uint32
interpret_addr(const char *str
)
133 /* If it's in the form of an IP address then
134 * get the lib to interpret it */
135 if (is_ipaddress_v4(str
)) {
138 if (inet_pton(AF_INET
, str
, &dest
) <= 0) {
139 /* Error - this shouldn't happen ! */
140 DEBUG(0,("interpret_addr: inet_pton failed "
145 ret
= dest
.s_addr
; /* NETWORK BYTE ORDER ! */
147 /* Otherwise assume it's a network name of some sort and use
149 struct addrinfo
*res
= NULL
;
150 struct addrinfo
*res_list
= NULL
;
151 if (!interpret_string_addr_internal(&res_list
,
154 DEBUG(3,("interpret_addr: Unknown host. %s\n",str
));
158 /* Find the first IPv4 address. */
159 for (res
= res_list
; res
; res
= res
->ai_next
) {
160 if (res
->ai_family
!= AF_INET
) {
163 if (res
->ai_addr
== NULL
) {
169 DEBUG(3,("interpret_addr: host address is "
170 "invalid for host %s\n",str
));
172 freeaddrinfo(res_list
);
177 &((struct sockaddr_in
*)res
->ai_addr
)->sin_addr
.s_addr
);
179 freeaddrinfo(res_list
);
183 /* This is so bogus - all callers need fixing... JRA. */
184 if (ret
== (uint32
)-1) {
191 /*******************************************************************
192 A convenient addition to interpret_addr().
193 ******************************************************************/
195 struct in_addr
*interpret_addr2(struct in_addr
*ip
, const char *str
)
197 uint32 a
= interpret_addr(str
);
202 /*******************************************************************
203 Map a text hostname or IP address (IPv4 or IPv6) into a
204 struct sockaddr_storage.
205 ******************************************************************/
207 bool interpret_string_addr(struct sockaddr_storage
*pss
,
211 char addr
[INET6_ADDRSTRLEN
];
212 struct addrinfo
*res
= NULL
;
213 #if defined(HAVE_IPV6)
214 unsigned int scope_id
= 0;
216 if (strchr_m(str
, ':')) {
217 char *p
= strchr_m(str
, '%');
220 * Cope with link-local.
221 * This is IP:v6:addr%ifname.
224 if (p
&& (p
> str
) && ((scope_id
= if_nametoindex(p
+1)) != 0)) {
226 MIN(PTR_DIFF(p
,str
)+1,
235 if (!interpret_string_addr_internal(&res
, str
, flags
|AI_ADDRCONFIG
)) {
241 /* Copy the first sockaddr. */
242 memcpy(pss
, res
->ai_addr
, res
->ai_addrlen
);
244 #if defined(HAVE_IPV6)
245 if (pss
->ss_family
== AF_INET6
&& scope_id
) {
246 struct sockaddr_in6
*ps6
= (struct sockaddr_in6
*)pss
;
247 if (IN6_IS_ADDR_LINKLOCAL(&ps6
->sin6_addr
) &&
248 ps6
->sin6_scope_id
== 0) {
249 ps6
->sin6_scope_id
= scope_id
;
258 /*******************************************************************
259 Check if an IPv7 is 127.0.0.1
260 ******************************************************************/
262 bool is_loopback_ip_v4(struct in_addr ip
)
265 a
.s_addr
= htonl(INADDR_LOOPBACK
);
266 return(ip
.s_addr
== a
.s_addr
);
269 /*******************************************************************
270 Check if a struct sockaddr_storage is the loopback address.
271 ******************************************************************/
273 bool is_loopback_addr(const struct sockaddr_storage
*pss
)
275 #if defined(HAVE_IPV6)
276 if (pss
->ss_family
== AF_INET6
) {
277 struct in6_addr
*pin6
=
278 &((struct sockaddr_in6
*)pss
)->sin6_addr
;
279 return IN6_IS_ADDR_LOOPBACK(pin6
);
282 if (pss
->ss_family
== AF_INET
) {
283 struct in_addr
*pin
= &((struct sockaddr_in
*)pss
)->sin_addr
;
284 return is_loopback_ip_v4(*pin
);
289 /*******************************************************************
290 Check if an IPv4 is 0.0.0.0.
291 ******************************************************************/
293 bool is_zero_ip_v4(struct in_addr ip
)
296 putip((char *)&a
,(char *)&ip
);
300 /*******************************************************************
301 Check if a struct sockaddr_storage has an unspecified address.
302 ******************************************************************/
304 bool is_zero_addr(const struct sockaddr_storage
*pss
)
306 #if defined(HAVE_IPV6)
307 if (pss
->ss_family
== AF_INET6
) {
308 struct in6_addr
*pin6
=
309 &((struct sockaddr_in6
*)pss
)->sin6_addr
;
310 return IN6_IS_ADDR_UNSPECIFIED(pin6
);
313 if (pss
->ss_family
== AF_INET
) {
314 struct in_addr
*pin
= &((struct sockaddr_in
*)pss
)->sin_addr
;
315 return is_zero_ip_v4(*pin
);
320 /*******************************************************************
321 Set an IP to 0.0.0.0.
322 ******************************************************************/
324 void zero_ip_v4(struct in_addr
*ip
)
326 memset(ip
, '\0', sizeof(struct in_addr
));
329 /*******************************************************************
330 Set an address to INADDR_ANY.
331 ******************************************************************/
333 void zero_addr(struct sockaddr_storage
*pss
)
335 memset(pss
, '\0', sizeof(*pss
));
336 /* Ensure we're at least a valid sockaddr-storage. */
337 pss
->ss_family
= AF_INET
;
340 /*******************************************************************
341 Are two IPs on the same subnet - IPv4 version ?
342 ********************************************************************/
344 bool same_net_v4(struct in_addr ip1
,struct in_addr ip2
,struct in_addr mask
)
346 uint32 net1
,net2
,nmask
;
348 nmask
= ntohl(mask
.s_addr
);
349 net1
= ntohl(ip1
.s_addr
);
350 net2
= ntohl(ip2
.s_addr
);
352 return((net1
& nmask
) == (net2
& nmask
));
355 /*******************************************************************
356 Convert an IPv4 struct in_addr to a struct sockaddr_storage.
357 ********************************************************************/
359 void in_addr_to_sockaddr_storage(struct sockaddr_storage
*ss
,
362 struct sockaddr_in
*sa
= (struct sockaddr_in
*)ss
;
363 memset(ss
, '\0', sizeof(*ss
));
364 ss
->ss_family
= AF_INET
;
368 #if defined(HAVE_IPV6)
369 /*******************************************************************
370 Convert an IPv6 struct in_addr to a struct sockaddr_storage.
371 ********************************************************************/
373 void in6_addr_to_sockaddr_storage(struct sockaddr_storage
*ss
,
376 struct sockaddr_in6
*sa
= (struct sockaddr_in6
*)ss
;
377 memset(ss
, '\0', sizeof(*ss
));
378 ss
->ss_family
= AF_INET6
;
383 /*******************************************************************
384 Are two IPs on the same subnet?
385 ********************************************************************/
387 bool same_net(const struct sockaddr_storage
*ip1
,
388 const struct sockaddr_storage
*ip2
,
389 const struct sockaddr_storage
*mask
)
391 if (ip1
->ss_family
!= ip2
->ss_family
) {
392 /* Never on the same net. */
396 #if defined(HAVE_IPV6)
397 if (ip1
->ss_family
== AF_INET6
) {
398 struct sockaddr_in6 ip1_6
= *(struct sockaddr_in6
*)ip1
;
399 struct sockaddr_in6 ip2_6
= *(struct sockaddr_in6
*)ip2
;
400 struct sockaddr_in6 mask_6
= *(struct sockaddr_in6
*)mask
;
401 char *p1
= (char *)&ip1_6
.sin6_addr
;
402 char *p2
= (char *)&ip2_6
.sin6_addr
;
403 char *m
= (char *)&mask_6
.sin6_addr
;
406 for (i
= 0; i
< sizeof(struct in6_addr
); i
++) {
411 return (memcmp(&ip1_6
.sin6_addr
,
413 sizeof(struct in6_addr
)) == 0);
416 if (ip1
->ss_family
== AF_INET
) {
417 return same_net_v4(((const struct sockaddr_in
*)ip1
)->sin_addr
,
418 ((const struct sockaddr_in
*)ip2
)->sin_addr
,
419 ((const struct sockaddr_in
*)mask
)->sin_addr
);
424 /*******************************************************************
425 Are two sockaddr_storage's the same family and address ? Ignore port etc.
426 ********************************************************************/
428 bool addr_equal(const struct sockaddr_storage
*ip1
,
429 const struct sockaddr_storage
*ip2
)
431 if (ip1
->ss_family
!= ip2
->ss_family
) {
432 /* Never the same. */
436 #if defined(HAVE_IPV6)
437 if (ip1
->ss_family
== AF_INET6
) {
438 return (memcmp(&((const struct sockaddr_in6
*)ip1
)->sin6_addr
,
439 &((const struct sockaddr_in6
*)ip2
)->sin6_addr
,
440 sizeof(struct in6_addr
)) == 0);
443 if (ip1
->ss_family
== AF_INET
) {
444 return (memcmp(&((const struct sockaddr_in
*)ip1
)->sin_addr
,
445 &((const struct sockaddr_in
*)ip2
)->sin_addr
,
446 sizeof(struct in_addr
)) == 0);
451 /****************************************************************************
452 Is an IP address the INADDR_ANY or in6addr_any value ?
453 ****************************************************************************/
455 bool is_address_any(const struct sockaddr_storage
*psa
)
457 #if defined(HAVE_IPV6)
458 if (psa
->ss_family
== AF_INET6
) {
459 struct sockaddr_in6
*si6
= (struct sockaddr_in6
*)psa
;
460 if (memcmp(&in6addr_any
,
462 sizeof(in6addr_any
)) == 0) {
468 if (psa
->ss_family
== AF_INET
) {
469 struct sockaddr_in
*si
= (struct sockaddr_in
*)psa
;
470 if (si
->sin_addr
.s_addr
== INADDR_ANY
) {
478 /****************************************************************************
479 Get a port number in host byte order from a sockaddr_storage.
480 ****************************************************************************/
482 uint16_t get_sockaddr_port(const struct sockaddr_storage
*pss
)
486 if (pss
->ss_family
!= AF_INET
) {
487 #if defined(HAVE_IPV6)
489 const struct sockaddr_in6
*sa6
=
490 (const struct sockaddr_in6
*)pss
;
491 port
= ntohs(sa6
->sin6_port
);
494 const struct sockaddr_in
*sa
=
495 (const struct sockaddr_in
*)pss
;
496 port
= ntohs(sa
->sin_port
);
501 /****************************************************************************
502 Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
503 ****************************************************************************/
505 static char *print_sockaddr_len(char *dest
,
507 const struct sockaddr_storage
*psa
,
513 (void)sys_getnameinfo((const struct sockaddr
*)psa
,
521 /****************************************************************************
522 Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
523 ****************************************************************************/
525 char *print_sockaddr(char *dest
,
527 const struct sockaddr_storage
*psa
)
529 return print_sockaddr_len(dest
, destlen
, psa
,
530 sizeof(struct sockaddr_storage
));
533 /****************************************************************************
534 Print out a canonical IPv4 or IPv6 address from a struct sockaddr_storage.
535 ****************************************************************************/
537 char *print_canonical_sockaddr(TALLOC_CTX
*ctx
,
538 const struct sockaddr_storage
*pss
)
540 char addr
[INET6_ADDRSTRLEN
];
544 ret
= sys_getnameinfo((const struct sockaddr
*)pss
,
545 sizeof(struct sockaddr_storage
),
552 if (pss
->ss_family
!= AF_INET
) {
553 #if defined(HAVE_IPV6)
555 const struct sockaddr_in6
*sa6
=
556 (const struct sockaddr_in6
*)pss
;
557 uint16_t port
= ntohs(sa6
->sin6_port
);
560 dest
= talloc_asprintf(ctx
,
565 dest
= talloc_asprintf(ctx
,
573 const struct sockaddr_in
*sa
=
574 (const struct sockaddr_in
*)pss
;
575 uint16_t port
= ntohs(sa
->sin_port
);
578 dest
= talloc_asprintf(ctx
,
583 dest
= talloc_asprintf(ctx
,
591 /****************************************************************************
592 Return the string of an IP address (IPv4 or IPv6).
593 ****************************************************************************/
595 static const char *get_socket_addr(int fd
, char *addr_buf
, size_t addr_len
)
597 struct sockaddr_storage sa
;
598 socklen_t length
= sizeof(sa
);
600 /* Ok, returning a hard coded IPv4 address
601 * is bogus, but it's just as bogus as a
602 * zero IPv6 address. No good choice here.
605 strlcpy(addr_buf
, "0.0.0.0", addr_len
);
611 if (getsockname(fd
, (struct sockaddr
*)&sa
, &length
) < 0) {
612 DEBUG(0,("getsockname failed. Error was %s\n",
617 return print_sockaddr_len(addr_buf
, addr_len
, &sa
, length
);
621 /* Not currently used. JRA. */
622 /****************************************************************************
623 Return the port number we've bound to on a socket.
624 ****************************************************************************/
626 static int get_socket_port(int fd
)
628 struct sockaddr_storage sa
;
629 socklen_t length
= sizeof(sa
);
635 if (getsockname(fd
, (struct sockaddr
*)&sa
, &length
) < 0) {
636 DEBUG(0,("getpeername failed. Error was %s\n",
641 #if defined(HAVE_IPV6)
642 if (sa
.ss_family
== AF_INET6
) {
643 return ntohs(((struct sockaddr_in6
*)&sa
)->sin6_port
);
646 if (sa
.ss_family
== AF_INET
) {
647 return ntohs(((struct sockaddr_in
*)&sa
)->sin_port
);
653 void set_sockaddr_port(struct sockaddr_storage
*psa
, uint16 port
)
655 #if defined(HAVE_IPV6)
656 if (psa
->ss_family
== AF_INET6
) {
657 ((struct sockaddr_in6
*)psa
)->sin6_port
= htons(port
);
660 if (psa
->ss_family
== AF_INET
) {
661 ((struct sockaddr_in
*)psa
)->sin_port
= htons(port
);
665 const char *client_name(int fd
)
667 return get_peer_name(fd
,false);
670 const char *client_addr(int fd
, char *addr
, size_t addrlen
)
672 return get_peer_addr(fd
,addr
,addrlen
);
675 const char *client_socket_addr(int fd
, char *addr
, size_t addr_len
)
677 return get_socket_addr(fd
, addr
, addr_len
);
681 /* Not currently used. JRA. */
682 int client_socket_port(int fd
)
684 return get_socket_port(fd
);
688 /****************************************************************************
689 Accessor functions to make thread-safe code easier later...
690 ****************************************************************************/
692 void set_smb_read_error(enum smb_read_errors
*pre
,
693 enum smb_read_errors newerr
)
700 void cond_set_smb_read_error(enum smb_read_errors
*pre
,
701 enum smb_read_errors newerr
)
703 if (pre
&& *pre
== SMB_READ_OK
) {
708 /****************************************************************************
709 Determine if a file descriptor is in fact a socket.
710 ****************************************************************************/
712 bool is_a_socket(int fd
)
717 return(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&v
, &l
) == 0);
720 enum SOCK_OPT_TYPES
{OPT_BOOL
,OPT_INT
,OPT_ON
};
722 typedef struct smb_socket_option
{
730 static const smb_socket_option socket_options
[] = {
731 {"SO_KEEPALIVE", SOL_SOCKET
, SO_KEEPALIVE
, 0, OPT_BOOL
},
732 {"SO_REUSEADDR", SOL_SOCKET
, SO_REUSEADDR
, 0, OPT_BOOL
},
733 {"SO_BROADCAST", SOL_SOCKET
, SO_BROADCAST
, 0, OPT_BOOL
},
735 {"TCP_NODELAY", IPPROTO_TCP
, TCP_NODELAY
, 0, OPT_BOOL
},
738 {"TCP_KEEPCNT", IPPROTO_TCP
, TCP_KEEPCNT
, 0, OPT_INT
},
741 {"TCP_KEEPIDLE", IPPROTO_TCP
, TCP_KEEPIDLE
, 0, OPT_INT
},
744 {"TCP_KEEPINTVL", IPPROTO_TCP
, TCP_KEEPINTVL
, 0, OPT_INT
},
746 #ifdef IPTOS_LOWDELAY
747 {"IPTOS_LOWDELAY", IPPROTO_IP
, IP_TOS
, IPTOS_LOWDELAY
, OPT_ON
},
749 #ifdef IPTOS_THROUGHPUT
750 {"IPTOS_THROUGHPUT", IPPROTO_IP
, IP_TOS
, IPTOS_THROUGHPUT
, OPT_ON
},
753 {"SO_REUSEPORT", SOL_SOCKET
, SO_REUSEPORT
, 0, OPT_BOOL
},
756 {"SO_SNDBUF", SOL_SOCKET
, SO_SNDBUF
, 0, OPT_INT
},
759 {"SO_RCVBUF", SOL_SOCKET
, SO_RCVBUF
, 0, OPT_INT
},
762 {"SO_SNDLOWAT", SOL_SOCKET
, SO_SNDLOWAT
, 0, OPT_INT
},
765 {"SO_RCVLOWAT", SOL_SOCKET
, SO_RCVLOWAT
, 0, OPT_INT
},
768 {"SO_SNDTIMEO", SOL_SOCKET
, SO_SNDTIMEO
, 0, OPT_INT
},
771 {"SO_RCVTIMEO", SOL_SOCKET
, SO_RCVTIMEO
, 0, OPT_INT
},
774 {"TCP_FASTACK", IPPROTO_TCP
, TCP_FASTACK
, 0, OPT_INT
},
778 /****************************************************************************
779 Print socket options.
780 ****************************************************************************/
782 static void print_socket_options(int s
)
786 const smb_socket_option
*p
= &socket_options
[0];
788 /* wrapped in if statement to prevent streams
789 * leak in SCO Openserver 5.0 */
790 /* reported on samba-technical --jerry */
791 if ( DEBUGLEVEL
>= 5 ) {
792 for (; p
->name
!= NULL
; p
++) {
793 if (getsockopt(s
, p
->level
, p
->option
,
794 (void *)&value
, &vlen
) == -1) {
795 DEBUG(5,("Could not test socket option %s.\n",
798 DEBUG(5,("socket option %s = %d\n",
805 /****************************************************************************
806 Set user socket options.
807 ****************************************************************************/
809 void set_socket_options(int fd
, const char *options
)
811 TALLOC_CTX
*ctx
= talloc_stackframe();
814 while (next_token_talloc(ctx
, &options
, &tok
," \t,")) {
818 bool got_value
= false;
820 if ((p
= strchr_m(tok
,'='))) {
826 for (i
=0;socket_options
[i
].name
;i
++)
827 if (strequal(socket_options
[i
].name
,tok
))
830 if (!socket_options
[i
].name
) {
831 DEBUG(0,("Unknown socket option %s\n",tok
));
835 switch (socket_options
[i
].opttype
) {
838 ret
= setsockopt(fd
,socket_options
[i
].level
,
839 socket_options
[i
].option
,
840 (char *)&value
,sizeof(int));
845 DEBUG(0,("syntax error - %s "
846 "does not take a value\n",tok
));
849 int on
= socket_options
[i
].value
;
850 ret
= setsockopt(fd
,socket_options
[i
].level
,
851 socket_options
[i
].option
,
852 (char *)&on
,sizeof(int));
858 DEBUG(0,("Failed to set socket option %s (Error %s)\n",
859 tok
, strerror(errno
) ));
864 print_socket_options(fd
);
867 /****************************************************************************
869 ****************************************************************************/
871 ssize_t
read_udp_v4_socket(int fd
,
874 struct sockaddr_storage
*psa
)
877 socklen_t socklen
= sizeof(*psa
);
878 struct sockaddr_in
*si
= (struct sockaddr_in
*)psa
;
880 memset((char *)psa
,'\0',socklen
);
882 ret
= (ssize_t
)sys_recvfrom(fd
,buf
,len
,0,
883 (struct sockaddr
*)psa
,&socklen
);
885 /* Don't print a low debug error for a non-blocking socket. */
886 if (errno
== EAGAIN
) {
887 DEBUG(10,("read_udp_v4_socket: returned EAGAIN\n"));
889 DEBUG(2,("read_udp_v4_socket: failed. errno=%s\n",
895 if (psa
->ss_family
!= AF_INET
) {
896 DEBUG(2,("read_udp_v4_socket: invalid address family %d "
897 "(not IPv4)\n", (int)psa
->ss_family
));
901 DEBUG(10,("read_udp_v4_socket: ip %s port %d read: %lu\n",
902 inet_ntoa(si
->sin_addr
),
904 (unsigned long)ret
));
909 /****************************************************************************
910 Read data from a socket with a timout in msec.
911 mincount = if timeout, minimum to read before returning
912 maxcount = number to be read.
913 time_out = timeout in milliseconds
914 ****************************************************************************/
916 NTSTATUS
read_socket_with_timeout(int fd
, char *buf
,
917 size_t mincnt
, size_t maxcnt
,
918 unsigned int time_out
,
925 struct timeval timeout
;
926 char addr
[INET6_ADDRSTRLEN
];
928 /* just checking .... */
938 while (nread
< mincnt
) {
939 readret
= sys_read(fd
, buf
+ nread
, maxcnt
- nread
);
942 DEBUG(5,("read_socket_with_timeout: "
943 "blocking read. EOF from client.\n"));
944 return NT_STATUS_END_OF_FILE
;
948 if (fd
== get_client_fd()) {
949 /* Try and give an error message
950 * saying what client failed. */
951 DEBUG(0,("read_socket_with_timeout: "
952 "client %s read error = %s.\n",
953 get_peer_addr(fd
,addr
,sizeof(addr
)),
956 DEBUG(0,("read_socket_with_timeout: "
957 "read error = %s.\n",
960 return map_nt_error_from_unix(errno
);
967 /* Most difficult - timeout read */
968 /* If this is ever called on a disk file and
969 mincnt is greater then the filesize then
970 system performance will suffer severely as
971 select always returns true on disk files */
973 /* Set initial timeout */
974 timeout
.tv_sec
= (time_t)(time_out
/ 1000);
975 timeout
.tv_usec
= (long)(1000 * (time_out
% 1000));
977 for (nread
=0; nread
< mincnt
; ) {
981 selrtn
= sys_select_intr(fd
+1,&fds
,NULL
,NULL
,&timeout
);
985 /* something is wrong. Maybe the socket is dead? */
986 if (fd
== get_client_fd()) {
987 /* Try and give an error message saying
988 * what client failed. */
989 DEBUG(0,("read_socket_with_timeout: timeout "
990 "read for client %s. select error = %s.\n",
991 get_peer_addr(fd
,addr
,sizeof(addr
)),
994 DEBUG(0,("read_socket_with_timeout: timeout "
995 "read. select error = %s.\n",
998 return map_nt_error_from_unix(errno
);
1001 /* Did we timeout ? */
1003 DEBUG(10,("read_socket_with_timeout: timeout read. "
1004 "select timed out.\n"));
1005 return NT_STATUS_IO_TIMEOUT
;
1008 readret
= sys_read(fd
, buf
+nread
, maxcnt
-nread
);
1011 /* we got EOF on the file descriptor */
1012 DEBUG(5,("read_socket_with_timeout: timeout read. "
1013 "EOF from client.\n"));
1014 return NT_STATUS_END_OF_FILE
;
1017 if (readret
== -1) {
1018 /* the descriptor is probably dead */
1019 if (fd
== get_client_fd()) {
1020 /* Try and give an error message
1021 * saying what client failed. */
1022 DEBUG(0,("read_socket_with_timeout: timeout "
1023 "read to client %s. read error = %s.\n",
1024 get_peer_addr(fd
,addr
,sizeof(addr
)),
1027 DEBUG(0,("read_socket_with_timeout: timeout "
1028 "read. read error = %s.\n",
1031 return map_nt_error_from_unix(errno
);
1038 /* Return the number we got */
1042 return NT_STATUS_OK
;
1045 /****************************************************************************
1046 Read data from the client, reading exactly N bytes.
1047 ****************************************************************************/
1049 NTSTATUS
read_data(int fd
, char *buffer
, size_t N
)
1051 return read_socket_with_timeout(fd
, buffer
, N
, N
, 0, NULL
);
1054 /****************************************************************************
1056 ****************************************************************************/
1058 ssize_t
write_data(int fd
, const char *buffer
, size_t N
)
1062 char addr
[INET6_ADDRSTRLEN
];
1065 ret
= sys_write(fd
,buffer
+ total
,N
- total
);
1068 if (fd
== get_client_fd()) {
1069 /* Try and give an error message saying
1070 * what client failed. */
1071 DEBUG(0,("write_data: write failure in "
1072 "writing to client %s. Error %s\n",
1073 get_peer_addr(fd
,addr
,sizeof(addr
)),
1076 DEBUG(0,("write_data: write failure. "
1077 "Error = %s\n", strerror(errno
) ));
1088 return (ssize_t
)total
;
1091 /****************************************************************************
1092 Send a keepalive packet (rfc1002).
1093 ****************************************************************************/
1095 bool send_keepalive(int client
)
1097 unsigned char buf
[4];
1099 buf
[0] = SMBkeepalive
;
1100 buf
[1] = buf
[2] = buf
[3] = 0;
1102 return(write_data(client
,(char *)buf
,4) == 4);
1105 /****************************************************************************
1106 Read 4 bytes of a smb packet and return the smb length of the packet.
1107 Store the result in the buffer.
1108 This version of the function will return a length of zero on receiving
1110 Timeout is in milliseconds.
1111 ****************************************************************************/
1113 NTSTATUS
read_smb_length_return_keepalive(int fd
, char *inbuf
,
1114 unsigned int timeout
,
1120 status
= read_socket_with_timeout(fd
, inbuf
, 4, 4, timeout
, NULL
);
1122 if (!NT_STATUS_IS_OK(status
)) {
1126 *len
= smb_len(inbuf
);
1127 msg_type
= CVAL(inbuf
,0);
1129 if (msg_type
== SMBkeepalive
) {
1130 DEBUG(5,("Got keepalive packet\n"));
1133 DEBUG(10,("got smb length of %lu\n",(unsigned long)(*len
)));
1135 return NT_STATUS_OK
;
1138 /****************************************************************************
1139 Read 4 bytes of a smb packet and return the smb length of the packet.
1140 Store the result in the buffer. This version of the function will
1141 never return a session keepalive (length of zero).
1142 Timeout is in milliseconds.
1143 ****************************************************************************/
1145 NTSTATUS
read_smb_length(int fd
, char *inbuf
, unsigned int timeout
,
1148 uint8_t msgtype
= SMBkeepalive
;
1150 while (msgtype
== SMBkeepalive
) {
1153 status
= read_smb_length_return_keepalive(fd
, inbuf
, timeout
,
1155 if (!NT_STATUS_IS_OK(status
)) {
1159 msgtype
= CVAL(inbuf
, 0);
1162 DEBUG(10,("read_smb_length: got smb length of %lu\n",
1163 (unsigned long)len
));
1165 return NT_STATUS_OK
;
1168 /****************************************************************************
1169 Read an smb from a fd. Note that the buffer *MUST* be of size
1170 BUFFER_SIZE+SAFETY_MARGIN.
1171 The timeout is in milliseconds.
1172 This function will return on receipt of a session keepalive packet.
1173 maxlen is the max number of bytes to return, not including the 4 byte
1174 length. If zero it means BUFFER_SIZE+SAFETY_MARGIN limit.
1175 Doesn't check the MAC on signed packets.
1176 ****************************************************************************/
1178 NTSTATUS
receive_smb_raw(int fd
, char *buffer
, unsigned int timeout
,
1179 size_t maxlen
, size_t *p_len
)
1184 status
= read_smb_length_return_keepalive(fd
,buffer
,timeout
,&len
);
1186 if (!NT_STATUS_IS_OK(status
)) {
1187 DEBUG(10, ("receive_smb_raw: %s!\n", nt_errstr(status
)));
1192 * A WRITEX with CAP_LARGE_WRITEX can be 64k worth of data plus 65 bytes
1193 * of header. Don't print the error if this fits.... JRA.
1196 if (len
> (BUFFER_SIZE
+ LARGE_WRITEX_HDR_SIZE
)) {
1197 DEBUG(0,("Invalid packet length! (%lu bytes).\n",
1198 (unsigned long)len
));
1199 if (len
> BUFFER_SIZE
+ (SAFETY_MARGIN
/2)) {
1200 return NT_STATUS_INVALID_PARAMETER
;
1206 len
= MIN(len
,maxlen
);
1209 status
= read_socket_with_timeout(
1210 fd
, buffer
+4, len
, len
, timeout
, &len
);
1212 if (!NT_STATUS_IS_OK(status
)) {
1216 /* not all of samba3 properly checks for packet-termination
1217 * of strings. This ensures that we don't run off into
1219 SSVAL(buffer
+4,len
, 0);
1223 return NT_STATUS_OK
;
1226 /****************************************************************************
1227 Open a socket of the specified type, port, and address for incoming data.
1228 ****************************************************************************/
1230 int open_socket_in(int type
,
1233 const struct sockaddr_storage
*psock
,
1236 struct sockaddr_storage sock
;
1238 socklen_t slen
= sizeof(struct sockaddr_in
);
1242 #if defined(HAVE_IPV6)
1243 if (sock
.ss_family
== AF_INET6
) {
1244 ((struct sockaddr_in6
*)&sock
)->sin6_port
= htons(port
);
1245 slen
= sizeof(struct sockaddr_in6
);
1248 if (sock
.ss_family
== AF_INET
) {
1249 ((struct sockaddr_in
*)&sock
)->sin_port
= htons(port
);
1252 res
= socket(sock
.ss_family
, type
, 0 );
1255 dbgtext( "open_socket_in(): socket() call failed: " );
1256 dbgtext( "%s\n", strerror( errno
) );
1261 /* This block sets/clears the SO_REUSEADDR and possibly SO_REUSEPORT. */
1263 int val
= rebind
? 1 : 0;
1264 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEADDR
,
1265 (char *)&val
,sizeof(val
)) == -1 ) {
1266 if( DEBUGLVL( dlevel
) ) {
1267 dbgtext( "open_socket_in(): setsockopt: " );
1268 dbgtext( "SO_REUSEADDR = %s ",
1269 val
?"true":"false" );
1270 dbgtext( "on port %d failed ", port
);
1271 dbgtext( "with error = %s\n", strerror(errno
) );
1275 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEPORT
,
1276 (char *)&val
,sizeof(val
)) == -1 ) {
1277 if( DEBUGLVL( dlevel
) ) {
1278 dbgtext( "open_socket_in(): setsockopt: ");
1279 dbgtext( "SO_REUSEPORT = %s ",
1280 val
?"true":"false");
1281 dbgtext( "on port %d failed ", port
);
1282 dbgtext( "with error = %s\n", strerror(errno
));
1285 #endif /* SO_REUSEPORT */
1288 /* now we've got a socket - we need to bind it */
1289 if (bind(res
, (struct sockaddr
*)&sock
, slen
) == -1 ) {
1290 if( DEBUGLVL(dlevel
) && (port
== SMB_PORT1
||
1291 port
== SMB_PORT2
|| port
== NMB_PORT
) ) {
1292 char addr
[INET6_ADDRSTRLEN
];
1293 print_sockaddr(addr
, sizeof(addr
),
1295 dbgtext( "bind failed on port %d ", port
);
1296 dbgtext( "socket_addr = %s.\n", addr
);
1297 dbgtext( "Error = %s\n", strerror(errno
));
1303 DEBUG( 10, ( "bind succeeded on port %d\n", port
) );
1307 /****************************************************************************
1308 Create an outgoing socket. timeout is in milliseconds.
1309 **************************************************************************/
1311 int open_socket_out(int type
,
1312 const struct sockaddr_storage
*pss
,
1316 char addr
[INET6_ADDRSTRLEN
];
1317 struct sockaddr_storage sock_out
= *pss
;
1319 int connect_loop
= 10;
1322 /* create a socket to write to */
1323 res
= socket(pss
->ss_family
, type
, 0);
1325 DEBUG(0,("socket error (%s)\n", strerror(errno
)));
1329 if (type
!= SOCK_STREAM
) {
1333 #if defined(HAVE_IPV6)
1334 if (pss
->ss_family
== AF_INET6
) {
1335 struct sockaddr_in6
*psa6
= (struct sockaddr_in6
*)&sock_out
;
1336 psa6
->sin6_port
= htons(port
);
1337 if (psa6
->sin6_scope_id
== 0 &&
1338 IN6_IS_ADDR_LINKLOCAL(&psa6
->sin6_addr
)) {
1339 setup_linklocal_scope_id(&sock_out
);
1343 if (pss
->ss_family
== AF_INET
) {
1344 struct sockaddr_in
*psa
= (struct sockaddr_in
*)&sock_out
;
1345 psa
->sin_port
= htons(port
);
1348 /* set it non-blocking */
1349 set_blocking(res
,false);
1351 print_sockaddr(addr
, sizeof(addr
), &sock_out
);
1352 DEBUG(3,("Connecting to %s at port %u\n",
1354 (unsigned int)port
));
1356 /* and connect it to the destination */
1359 ret
= sys_connect(res
, (struct sockaddr
*)&sock_out
);
1361 /* Some systems return EAGAIN when they mean EINPROGRESS */
1362 if (ret
< 0 && (errno
== EINPROGRESS
|| errno
== EALREADY
||
1363 errno
== EAGAIN
) && (connect_loop
< timeout
) ) {
1364 smb_msleep(connect_loop
);
1365 timeout
-= connect_loop
;
1366 connect_loop
+= increment
;
1367 if (increment
< 250) {
1368 /* After 8 rounds we end up at a max of 255 msec */
1374 if (ret
< 0 && (errno
== EINPROGRESS
|| errno
== EALREADY
||
1376 DEBUG(1,("timeout connecting to %s:%u\n",
1378 (unsigned int)port
));
1384 if (ret
< 0 && errno
== EISCONN
) {
1391 DEBUG(2,("error connecting to %s:%d (%s)\n",
1399 /* set it blocking again */
1400 set_blocking(res
,true);
1405 /****************************************************************************
1406 Create an outgoing TCP socket to any of the addrs. This is for
1407 simultaneous connects to port 445 and 139 of a host or even a variety
1408 of DC's all of which are equivalent for our purposes.
1409 **************************************************************************/
1411 bool open_any_socket_out(struct sockaddr_storage
*addrs
, int num_addrs
,
1412 int timeout
, int *fd_index
, int *fd
)
1414 int i
, resulting_index
, res
;
1418 fd_set r_fds
, wr_fds
;
1422 int connect_loop
= 10000; /* 10 milliseconds */
1424 timeout
*= 1000; /* convert to microseconds */
1426 sockets
= SMB_MALLOC_ARRAY(int, num_addrs
);
1428 if (sockets
== NULL
)
1431 resulting_index
= -1;
1433 for (i
=0; i
<num_addrs
; i
++)
1436 for (i
=0; i
<num_addrs
; i
++) {
1437 sockets
[i
] = socket(addrs
[i
].ss_family
, SOCK_STREAM
, 0);
1440 set_blocking(sockets
[i
], false);
1444 good_connect
= false;
1446 for (i
=0; i
<num_addrs
; i
++) {
1447 const struct sockaddr
* a
=
1448 (const struct sockaddr
*)&(addrs
[i
]);
1450 if (sockets
[i
] == -1)
1453 if (sys_connect(sockets
[i
], a
) == 0) {
1454 /* Rather unlikely as we are non-blocking, but it
1455 * might actually happen. */
1456 resulting_index
= i
;
1460 if (errno
== EINPROGRESS
|| errno
== EALREADY
||
1464 errno
== EAGAIN
|| errno
== EINTR
) {
1465 /* These are the error messages that something is
1467 good_connect
= true;
1468 } else if (errno
!= 0) {
1469 /* There was a direct error */
1475 if (!good_connect
) {
1476 /* All of the connect's resulted in real error conditions */
1480 /* Lets see if any of the connect attempts succeeded */
1486 for (i
=0; i
<num_addrs
; i
++) {
1487 if (sockets
[i
] == -1)
1489 FD_SET(sockets
[i
], &wr_fds
);
1490 FD_SET(sockets
[i
], &r_fds
);
1491 if (sockets
[i
]>maxfd
)
1496 tv
.tv_usec
= connect_loop
;
1498 res
= sys_select_intr(maxfd
+1, &r_fds
, &wr_fds
, NULL
, &tv
);
1506 for (i
=0; i
<num_addrs
; i
++) {
1508 if (sockets
[i
] == -1)
1511 /* Stevens, Network Programming says that if there's a
1512 * successful connect, the socket is only writable. Upon an
1513 * error, it's both readable and writable. */
1515 if (FD_ISSET(sockets
[i
], &r_fds
) &&
1516 FD_ISSET(sockets
[i
], &wr_fds
)) {
1517 /* readable and writable, so it's an error */
1523 if (!FD_ISSET(sockets
[i
], &r_fds
) &&
1524 FD_ISSET(sockets
[i
], &wr_fds
)) {
1525 /* Only writable, so it's connected */
1526 resulting_index
= i
;
1533 timeout
-= connect_loop
;
1536 connect_loop
*= 1.5;
1537 if (connect_loop
> timeout
)
1538 connect_loop
= timeout
;
1542 for (i
=0; i
<num_addrs
; i
++) {
1543 if (i
== resulting_index
)
1545 if (sockets
[i
] >= 0)
1549 if (resulting_index
>= 0) {
1550 *fd_index
= resulting_index
;
1551 *fd
= sockets
[*fd_index
];
1552 set_blocking(*fd
, true);
1557 return (resulting_index
>= 0);
1559 /****************************************************************************
1560 Open a connected UDP socket to host on port
1561 **************************************************************************/
1563 int open_udp_socket(const char *host
, int port
)
1565 int type
= SOCK_DGRAM
;
1566 struct sockaddr_in sock_out
;
1568 struct in_addr addr
;
1570 (void)interpret_addr2(&addr
, host
);
1572 res
= socket(PF_INET
, type
, 0);
1577 memset((char *)&sock_out
,'\0',sizeof(sock_out
));
1578 putip((char *)&sock_out
.sin_addr
,(char *)&addr
);
1579 sock_out
.sin_port
= htons(port
);
1580 sock_out
.sin_family
= PF_INET
;
1582 if (sys_connect(res
,(struct sockaddr
*)&sock_out
)) {
1590 /*******************************************************************
1591 Return the IP addr of the remote end of a socket as a string.
1592 Optionally return the struct sockaddr_storage.
1593 ******************************************************************/
1595 static const char *get_peer_addr_internal(int fd
,
1597 size_t addr_buf_len
,
1598 struct sockaddr_storage
*pss
,
1601 struct sockaddr_storage ss
;
1602 socklen_t length
= sizeof(ss
);
1604 strlcpy(addr_buf
,"0.0.0.0",addr_buf_len
);
1613 if (plength
== NULL
) {
1617 if (getpeername(fd
, (struct sockaddr
*)pss
, plength
) < 0) {
1618 DEBUG(0,("getpeername failed. Error was %s\n",
1623 print_sockaddr_len(addr_buf
,
1630 /*******************************************************************
1631 Matchname - determine if host name matches IP address. Used to
1632 confirm a hostname lookup to prevent spoof attacks.
1633 ******************************************************************/
1635 static bool matchname(const char *remotehost
,
1636 const struct sockaddr_storage
*pss
,
1639 struct addrinfo
*res
= NULL
;
1640 struct addrinfo
*ailist
= NULL
;
1641 char addr_buf
[INET6_ADDRSTRLEN
];
1642 bool ret
= interpret_string_addr_internal(&ailist
,
1644 AI_ADDRCONFIG
|AI_CANONNAME
);
1646 if (!ret
|| ailist
== NULL
) {
1647 DEBUG(3,("matchname: getaddrinfo failed for "
1650 gai_strerror(ret
) ));
1655 * Make sure that getaddrinfo() returns the "correct" host name.
1658 if (ailist
->ai_canonname
== NULL
||
1659 (!strequal(remotehost
, ailist
->ai_canonname
) &&
1660 !strequal(remotehost
, "localhost"))) {
1661 DEBUG(0,("matchname: host name/name mismatch: %s != %s\n",
1663 ailist
->ai_canonname
?
1664 ailist
->ai_canonname
: "(NULL)"));
1665 freeaddrinfo(ailist
);
1669 /* Look up the host address in the address list we just got. */
1670 for (res
= ailist
; res
; res
= res
->ai_next
) {
1671 if (!res
->ai_addr
) {
1674 if (addr_equal((const struct sockaddr_storage
*)res
->ai_addr
,
1676 freeaddrinfo(ailist
);
1682 * The host name does not map to the original host address. Perhaps
1683 * someone has compromised a name server. More likely someone botched
1684 * it, but that could be dangerous, too.
1687 DEBUG(0,("matchname: host name/address mismatch: %s != %s\n",
1688 print_sockaddr_len(addr_buf
,
1692 ailist
->ai_canonname
? ailist
->ai_canonname
: "(NULL)"));
1695 freeaddrinfo(ailist
);
1700 /*******************************************************************
1701 Deal with the singleton cache.
1702 ******************************************************************/
1704 struct name_addr_pair
{
1705 struct sockaddr_storage ss
;
1709 /*******************************************************************
1710 Lookup a name/addr pair. Returns memory allocated from memcache.
1711 ******************************************************************/
1713 static bool lookup_nc(struct name_addr_pair
*nc
)
1719 if (!memcache_lookup(
1720 NULL
, SINGLETON_CACHE
,
1721 data_blob_string_const("get_peer_name"),
1726 memcpy(&nc
->ss
, tmp
.data
, sizeof(nc
->ss
));
1727 nc
->name
= (const char *)tmp
.data
+ sizeof(nc
->ss
);
1731 /*******************************************************************
1732 Save a name/addr pair.
1733 ******************************************************************/
1735 static void store_nc(const struct name_addr_pair
*nc
)
1738 size_t namelen
= strlen(nc
->name
);
1740 tmp
= data_blob(NULL
, sizeof(nc
->ss
) + namelen
+ 1);
1744 memcpy(tmp
.data
, &nc
->ss
, sizeof(nc
->ss
));
1745 memcpy(tmp
.data
+sizeof(nc
->ss
), nc
->name
, namelen
+1);
1747 memcache_add(NULL
, SINGLETON_CACHE
,
1748 data_blob_string_const("get_peer_name"),
1750 data_blob_free(&tmp
);
1753 /*******************************************************************
1754 Return the DNS name of the remote end of a socket.
1755 ******************************************************************/
1757 const char *get_peer_name(int fd
, bool force_lookup
)
1759 struct name_addr_pair nc
;
1760 char addr_buf
[INET6_ADDRSTRLEN
];
1761 struct sockaddr_storage ss
;
1762 socklen_t length
= sizeof(ss
);
1765 char name_buf
[MAX_DNS_NAME_LENGTH
];
1766 char tmp_name
[MAX_DNS_NAME_LENGTH
];
1768 /* reverse lookups can be *very* expensive, and in many
1769 situations won't work because many networks don't link dhcp
1770 with dns. To avoid the delay we avoid the lookup if
1772 if (!lp_hostname_lookups() && (force_lookup
== false)) {
1773 length
= sizeof(nc
.ss
);
1774 nc
.name
= get_peer_addr_internal(fd
, addr_buf
, sizeof(addr_buf
),
1778 return nc
.name
? nc
.name
: "UNKNOWN";
1783 memset(&ss
, '\0', sizeof(ss
));
1784 p
= get_peer_addr_internal(fd
, addr_buf
, sizeof(addr_buf
), &ss
, &length
);
1786 /* it might be the same as the last one - save some DNS work */
1787 if (addr_equal(&ss
, &nc
.ss
)) {
1788 return nc
.name
? nc
.name
: "UNKNOWN";
1791 /* Not the same. We need to lookup. */
1796 /* Look up the remote host name. */
1797 ret
= sys_getnameinfo((struct sockaddr
*)&ss
,
1806 DEBUG(1,("get_peer_name: getnameinfo failed "
1807 "for %s with error %s\n",
1809 gai_strerror(ret
)));
1810 strlcpy(name_buf
, p
, sizeof(name_buf
));
1812 if (!matchname(name_buf
, &ss
, length
)) {
1813 DEBUG(0,("Matchname failed on %s %s\n",name_buf
,p
));
1814 strlcpy(name_buf
,"UNKNOWN",sizeof(name_buf
));
1818 /* can't pass the same source and dest strings in when you
1819 use --enable-developer or the clobber_region() call will
1822 strlcpy(tmp_name
, name_buf
, sizeof(tmp_name
));
1823 alpha_strcpy(name_buf
, tmp_name
, "_-.", sizeof(name_buf
));
1824 if (strstr(name_buf
,"..")) {
1825 strlcpy(name_buf
, "UNKNOWN", sizeof(name_buf
));
1833 return nc
.name
? nc
.name
: "UNKNOWN";
1836 /*******************************************************************
1837 Return the IP addr of the remote end of a socket as a string.
1838 ******************************************************************/
1840 const char *get_peer_addr(int fd
, char *addr
, size_t addr_len
)
1842 return get_peer_addr_internal(fd
, addr
, addr_len
, NULL
, NULL
);
1845 /*******************************************************************
1846 Create protected unix domain socket.
1848 Some unixes cannot set permissions on a ux-dom-sock, so we
1849 have to make sure that the directory contains the protection
1850 permissions instead.
1851 ******************************************************************/
1853 int create_pipe_sock(const char *socket_dir
,
1854 const char *socket_name
,
1857 #ifdef HAVE_UNIXSOCKET
1858 struct sockaddr_un sunaddr
;
1864 old_umask
= umask(0);
1866 /* Create the socket directory or reuse the existing one */
1868 if (lstat(socket_dir
, &st
) == -1) {
1869 if (errno
== ENOENT
) {
1870 /* Create directory */
1871 if (mkdir(socket_dir
, dir_perms
) == -1) {
1872 DEBUG(0, ("error creating socket directory "
1873 "%s: %s\n", socket_dir
,
1878 DEBUG(0, ("lstat failed on socket directory %s: %s\n",
1879 socket_dir
, strerror(errno
)));
1883 /* Check ownership and permission on existing directory */
1884 if (!S_ISDIR(st
.st_mode
)) {
1885 DEBUG(0, ("socket directory %s isn't a directory\n",
1889 if ((st
.st_uid
!= sec_initial_uid()) ||
1890 ((st
.st_mode
& 0777) != dir_perms
)) {
1891 DEBUG(0, ("invalid permissions on socket directory "
1892 "%s\n", socket_dir
));
1897 /* Create the socket file */
1899 sock
= socket(AF_UNIX
, SOCK_STREAM
, 0);
1902 DEBUG(0, ("create_pipe_sock: socket error %s\n",
1907 asprintf(&path
, "%s/%s", socket_dir
, socket_name
);
1913 memset(&sunaddr
, 0, sizeof(sunaddr
));
1914 sunaddr
.sun_family
= AF_UNIX
;
1915 strlcpy(sunaddr
.sun_path
, path
, sizeof(sunaddr
.sun_path
));
1917 if (bind(sock
, (struct sockaddr
*)&sunaddr
, sizeof(sunaddr
)) == -1) {
1918 DEBUG(0, ("bind failed on pipe socket %s: %s\n", path
,
1923 if (listen(sock
, 5) == -1) {
1924 DEBUG(0, ("listen failed on pipe socket %s: %s\n", path
,
1943 DEBUG(0, ("create_pipe_sock: No Unix sockets on this system\n"));
1945 #endif /* HAVE_UNIXSOCKET */
1948 /****************************************************************************
1949 Get my own canonical name, including domain.
1950 ****************************************************************************/
1952 const char *get_mydnsfullname(void)
1954 struct addrinfo
*res
= NULL
;
1955 char my_hostname
[HOST_NAME_MAX
];
1959 if (memcache_lookup(NULL
, SINGLETON_CACHE
,
1960 data_blob_string_const("get_mydnsfullname"),
1962 SMB_ASSERT(tmp
.length
> 0);
1963 return (const char *)tmp
.data
;
1966 /* get my host name */
1967 if (gethostname(my_hostname
, sizeof(my_hostname
)) == -1) {
1968 DEBUG(0,("get_mydnsfullname: gethostname failed\n"));
1972 /* Ensure null termination. */
1973 my_hostname
[sizeof(my_hostname
)-1] = '\0';
1975 ret
= interpret_string_addr_internal(&res
,
1977 AI_ADDRCONFIG
|AI_CANONNAME
);
1979 if (!ret
|| res
== NULL
) {
1980 DEBUG(3,("get_mydnsfullname: getaddrinfo failed for "
1983 gai_strerror(ret
) ));
1988 * Make sure that getaddrinfo() returns the "correct" host name.
1991 if (res
->ai_canonname
== NULL
) {
1992 DEBUG(3,("get_mydnsfullname: failed to get "
1993 "canonical name for %s\n",
1999 /* This copies the data, so we must do a lookup
2000 * afterwards to find the value to return.
2003 memcache_add(NULL
, SINGLETON_CACHE
,
2004 data_blob_string_const("get_mydnsfullname"),
2005 data_blob_string_const(res
->ai_canonname
));
2007 if (!memcache_lookup(NULL
, SINGLETON_CACHE
,
2008 data_blob_string_const("get_mydnsfullname"),
2010 tmp
= data_blob_talloc(talloc_tos(), res
->ai_canonname
,
2011 strlen(res
->ai_canonname
) + 1);
2016 return (const char *)tmp
.data
;
2019 /************************************************************
2021 ************************************************************/
2023 bool is_myname_or_ipaddr(const char *s
)
2025 TALLOC_CTX
*ctx
= talloc_tos();
2027 const char *dnsname
;
2028 char *servername
= NULL
;
2034 /* Santize the string from '\\name' */
2035 name
= talloc_strdup(ctx
, s
);
2040 servername
= strrchr_m(name
, '\\' );
2047 /* Optimize for the common case */
2048 if (strequal(servername
, global_myname())) {
2052 /* Check for an alias */
2053 if (is_myname(servername
)) {
2057 /* Check for loopback */
2058 if (strequal(servername
, "127.0.0.1") ||
2059 strequal(servername
, "::1")) {
2063 if (strequal(servername
, "localhost")) {
2067 /* Maybe it's my dns name */
2068 dnsname
= get_mydnsfullname();
2069 if (dnsname
&& strequal(servername
, dnsname
)) {
2073 /* Handle possible CNAME records - convert to an IP addr. */
2074 if (!is_ipaddress(servername
)) {
2075 /* Use DNS to resolve the name, but only the first address */
2076 struct sockaddr_storage ss
;
2077 if (interpret_string_addr(&ss
, servername
,0)) {
2078 print_sockaddr(name
,
2085 /* Maybe its an IP address? */
2086 if (is_ipaddress(servername
)) {
2087 struct sockaddr_storage ss
;
2088 struct iface_struct
*nics
;
2091 if (!interpret_string_addr(&ss
, servername
, AI_NUMERICHOST
)) {
2095 if (is_zero_addr(&ss
) || is_loopback_addr(&ss
)) {
2099 nics
= TALLOC_ARRAY(ctx
, struct iface_struct
,
2104 n
= get_interfaces(nics
, MAX_INTERFACES
);
2105 for (i
=0; i
<n
; i
++) {
2106 if (addr_equal(&nics
[i
].ip
, &ss
)) {