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 Map a text hostname or IP address (IPv4 or IPv6) into a
26 struct sockaddr_storage. Takes a flag which allows it to
27 prefer an IPv4 address (needed for DC's).
28 ******************************************************************/
30 static bool interpret_string_addr_pref(struct sockaddr_storage
*pss
,
35 struct addrinfo
*res
= NULL
;
36 #if defined(HAVE_IPV6)
37 char addr
[INET6_ADDRSTRLEN
];
38 unsigned int scope_id
= 0;
40 if (strchr_m(str
, ':')) {
41 char *p
= strchr_m(str
, '%');
44 * Cope with link-local.
45 * This is IP:v6:addr%ifname.
48 if (p
&& (p
> str
) && ((scope_id
= if_nametoindex(p
+1)) != 0)) {
50 MIN(PTR_DIFF(p
,str
)+1,
59 if (!interpret_string_addr_internal(&res
, str
, flags
|AI_ADDRCONFIG
)) {
69 for (p
= res
; p
; p
= p
->ai_next
) {
70 if (p
->ai_family
== AF_INET
) {
71 memcpy(pss
, p
->ai_addr
, p
->ai_addrlen
);
76 /* Copy the first sockaddr. */
77 memcpy(pss
, res
->ai_addr
, res
->ai_addrlen
);
80 /* Copy the first sockaddr. */
81 memcpy(pss
, res
->ai_addr
, res
->ai_addrlen
);
84 #if defined(HAVE_IPV6)
85 if (pss
->ss_family
== AF_INET6
&& scope_id
) {
86 struct sockaddr_in6
*ps6
= (struct sockaddr_in6
*)pss
;
87 if (IN6_IS_ADDR_LINKLOCAL(&ps6
->sin6_addr
) &&
88 ps6
->sin6_scope_id
== 0) {
89 ps6
->sin6_scope_id
= scope_id
;
98 /*******************************************************************
99 Map a text hostname or IP address (IPv4 or IPv6) into a
100 struct sockaddr_storage. Address agnostic version.
101 ******************************************************************/
103 bool interpret_string_addr(struct sockaddr_storage
*pss
,
107 return interpret_string_addr_pref(pss
,
113 /*******************************************************************
114 Map a text hostname or IP address (IPv4 or IPv6) into a
115 struct sockaddr_storage. Version that prefers IPv4.
116 ******************************************************************/
118 bool interpret_string_addr_prefer_ipv4(struct sockaddr_storage
*pss
,
122 return interpret_string_addr_pref(pss
,
128 /*******************************************************************
129 Set an address to INADDR_ANY.
130 ******************************************************************/
132 void zero_sockaddr(struct sockaddr_storage
*pss
)
134 memset(pss
, '\0', sizeof(*pss
));
135 /* Ensure we're at least a valid sockaddr-storage. */
136 pss
->ss_family
= AF_INET
;
139 /****************************************************************************
140 Get a port number in host byte order from a sockaddr_storage.
141 ****************************************************************************/
143 uint16_t get_sockaddr_port(const struct sockaddr_storage
*pss
)
147 if (pss
->ss_family
!= AF_INET
) {
148 #if defined(HAVE_IPV6)
150 const struct sockaddr_in6
*sa6
=
151 (const struct sockaddr_in6
*)pss
;
152 port
= ntohs(sa6
->sin6_port
);
155 const struct sockaddr_in
*sa
=
156 (const struct sockaddr_in
*)pss
;
157 port
= ntohs(sa
->sin_port
);
162 /****************************************************************************
163 Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
164 ****************************************************************************/
166 static char *print_sockaddr_len(char *dest
,
168 const struct sockaddr
*psa
,
174 (void)sys_getnameinfo(psa
,
182 /****************************************************************************
183 Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
184 ****************************************************************************/
186 char *print_sockaddr(char *dest
,
188 const struct sockaddr_storage
*psa
)
190 return print_sockaddr_len(dest
, destlen
, (struct sockaddr
*)psa
,
191 sizeof(struct sockaddr_storage
));
194 /****************************************************************************
195 Print out a canonical IPv4 or IPv6 address from a struct sockaddr_storage.
196 ****************************************************************************/
198 char *print_canonical_sockaddr(TALLOC_CTX
*ctx
,
199 const struct sockaddr_storage
*pss
)
201 char addr
[INET6_ADDRSTRLEN
];
205 /* Linux getnameinfo() man pages says port is unitialized if
206 service name is NULL. */
208 ret
= sys_getnameinfo((const struct sockaddr
*)pss
,
209 sizeof(struct sockaddr_storage
),
217 if (pss
->ss_family
!= AF_INET
) {
218 #if defined(HAVE_IPV6)
219 dest
= talloc_asprintf(ctx
, "[%s]", addr
);
224 dest
= talloc_asprintf(ctx
, "%s", addr
);
230 /****************************************************************************
231 Return the string of an IP address (IPv4 or IPv6).
232 ****************************************************************************/
234 static const char *get_socket_addr(int fd
, char *addr_buf
, size_t addr_len
)
236 struct sockaddr_storage sa
;
237 socklen_t length
= sizeof(sa
);
239 /* Ok, returning a hard coded IPv4 address
240 * is bogus, but it's just as bogus as a
241 * zero IPv6 address. No good choice here.
244 strlcpy(addr_buf
, "0.0.0.0", addr_len
);
250 if (getsockname(fd
, (struct sockaddr
*)&sa
, &length
) < 0) {
251 DEBUG(0,("getsockname failed. Error was %s\n",
256 return print_sockaddr_len(addr_buf
, addr_len
, (struct sockaddr
*)&sa
, length
);
259 /****************************************************************************
260 Return the port number we've bound to on a socket.
261 ****************************************************************************/
263 int get_socket_port(int fd
)
265 struct sockaddr_storage sa
;
266 socklen_t length
= sizeof(sa
);
272 if (getsockname(fd
, (struct sockaddr
*)&sa
, &length
) < 0) {
273 DEBUG(0,("getpeername failed. Error was %s\n",
278 #if defined(HAVE_IPV6)
279 if (sa
.ss_family
== AF_INET6
) {
280 return ntohs(((struct sockaddr_in6
*)&sa
)->sin6_port
);
283 if (sa
.ss_family
== AF_INET
) {
284 return ntohs(((struct sockaddr_in
*)&sa
)->sin_port
);
289 const char *client_name(int fd
)
291 return get_peer_name(fd
,false);
294 const char *client_addr(int fd
, char *addr
, size_t addrlen
)
296 return get_peer_addr(fd
,addr
,addrlen
);
299 const char *client_socket_addr(int fd
, char *addr
, size_t addr_len
)
301 return get_socket_addr(fd
, addr
, addr_len
);
305 /* Not currently used. JRA. */
306 int client_socket_port(int fd
)
308 return get_socket_port(fd
);
312 /****************************************************************************
313 Accessor functions to make thread-safe code easier later...
314 ****************************************************************************/
316 void set_smb_read_error(enum smb_read_errors
*pre
,
317 enum smb_read_errors newerr
)
324 void cond_set_smb_read_error(enum smb_read_errors
*pre
,
325 enum smb_read_errors newerr
)
327 if (pre
&& *pre
== SMB_READ_OK
) {
332 /****************************************************************************
333 Determine if a file descriptor is in fact a socket.
334 ****************************************************************************/
336 bool is_a_socket(int fd
)
341 return(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&v
, &l
) == 0);
344 enum SOCK_OPT_TYPES
{OPT_BOOL
,OPT_INT
,OPT_ON
};
346 typedef struct smb_socket_option
{
354 static const smb_socket_option socket_options
[] = {
355 {"SO_KEEPALIVE", SOL_SOCKET
, SO_KEEPALIVE
, 0, OPT_BOOL
},
356 {"SO_REUSEADDR", SOL_SOCKET
, SO_REUSEADDR
, 0, OPT_BOOL
},
357 {"SO_BROADCAST", SOL_SOCKET
, SO_BROADCAST
, 0, OPT_BOOL
},
359 {"TCP_NODELAY", IPPROTO_TCP
, TCP_NODELAY
, 0, OPT_BOOL
},
362 {"TCP_KEEPCNT", IPPROTO_TCP
, TCP_KEEPCNT
, 0, OPT_INT
},
365 {"TCP_KEEPIDLE", IPPROTO_TCP
, TCP_KEEPIDLE
, 0, OPT_INT
},
368 {"TCP_KEEPINTVL", IPPROTO_TCP
, TCP_KEEPINTVL
, 0, OPT_INT
},
370 #ifdef IPTOS_LOWDELAY
371 {"IPTOS_LOWDELAY", IPPROTO_IP
, IP_TOS
, IPTOS_LOWDELAY
, OPT_ON
},
373 #ifdef IPTOS_THROUGHPUT
374 {"IPTOS_THROUGHPUT", IPPROTO_IP
, IP_TOS
, IPTOS_THROUGHPUT
, OPT_ON
},
377 {"SO_REUSEPORT", SOL_SOCKET
, SO_REUSEPORT
, 0, OPT_BOOL
},
380 {"SO_SNDBUF", SOL_SOCKET
, SO_SNDBUF
, 0, OPT_INT
},
383 {"SO_RCVBUF", SOL_SOCKET
, SO_RCVBUF
, 0, OPT_INT
},
386 {"SO_SNDLOWAT", SOL_SOCKET
, SO_SNDLOWAT
, 0, OPT_INT
},
389 {"SO_RCVLOWAT", SOL_SOCKET
, SO_RCVLOWAT
, 0, OPT_INT
},
392 {"SO_SNDTIMEO", SOL_SOCKET
, SO_SNDTIMEO
, 0, OPT_INT
},
395 {"SO_RCVTIMEO", SOL_SOCKET
, SO_RCVTIMEO
, 0, OPT_INT
},
398 {"TCP_FASTACK", IPPROTO_TCP
, TCP_FASTACK
, 0, OPT_INT
},
401 {"TCP_QUICKACK", IPPROTO_TCP
, TCP_QUICKACK
, 0, OPT_BOOL
},
405 /****************************************************************************
406 Print socket options.
407 ****************************************************************************/
409 static void print_socket_options(int s
)
413 const smb_socket_option
*p
= &socket_options
[0];
415 /* wrapped in if statement to prevent streams
416 * leak in SCO Openserver 5.0 */
417 /* reported on samba-technical --jerry */
418 if ( DEBUGLEVEL
>= 5 ) {
419 DEBUG(5,("Socket options:\n"));
420 for (; p
->name
!= NULL
; p
++) {
421 if (getsockopt(s
, p
->level
, p
->option
,
422 (void *)&value
, &vlen
) == -1) {
423 DEBUGADD(5,("\tCould not test socket option %s.\n",
426 DEBUGADD(5,("\t%s = %d\n",
433 /****************************************************************************
434 Set user socket options.
435 ****************************************************************************/
437 void set_socket_options(int fd
, const char *options
)
439 TALLOC_CTX
*ctx
= talloc_stackframe();
442 while (next_token_talloc(ctx
, &options
, &tok
," \t,")) {
446 bool got_value
= false;
448 if ((p
= strchr_m(tok
,'='))) {
454 for (i
=0;socket_options
[i
].name
;i
++)
455 if (strequal(socket_options
[i
].name
,tok
))
458 if (!socket_options
[i
].name
) {
459 DEBUG(0,("Unknown socket option %s\n",tok
));
463 switch (socket_options
[i
].opttype
) {
466 ret
= setsockopt(fd
,socket_options
[i
].level
,
467 socket_options
[i
].option
,
468 (char *)&value
,sizeof(int));
473 DEBUG(0,("syntax error - %s "
474 "does not take a value\n",tok
));
477 int on
= socket_options
[i
].value
;
478 ret
= setsockopt(fd
,socket_options
[i
].level
,
479 socket_options
[i
].option
,
480 (char *)&on
,sizeof(int));
486 /* be aware that some systems like Solaris return
487 * EINVAL to a setsockopt() call when the client
488 * sent a RST previously - no need to worry */
489 DEBUG(2,("Failed to set socket option %s (Error %s)\n",
490 tok
, strerror(errno
) ));
495 print_socket_options(fd
);
498 /****************************************************************************
500 ****************************************************************************/
502 ssize_t
read_udp_v4_socket(int fd
,
505 struct sockaddr_storage
*psa
)
508 socklen_t socklen
= sizeof(*psa
);
509 struct sockaddr_in
*si
= (struct sockaddr_in
*)psa
;
511 memset((char *)psa
,'\0',socklen
);
513 ret
= (ssize_t
)sys_recvfrom(fd
,buf
,len
,0,
514 (struct sockaddr
*)psa
,&socklen
);
516 /* Don't print a low debug error for a non-blocking socket. */
517 if (errno
== EAGAIN
) {
518 DEBUG(10,("read_udp_v4_socket: returned EAGAIN\n"));
520 DEBUG(2,("read_udp_v4_socket: failed. errno=%s\n",
526 if (psa
->ss_family
!= AF_INET
) {
527 DEBUG(2,("read_udp_v4_socket: invalid address family %d "
528 "(not IPv4)\n", (int)psa
->ss_family
));
532 DEBUG(10,("read_udp_v4_socket: ip %s port %d read: %lu\n",
533 inet_ntoa(si
->sin_addr
),
535 (unsigned long)ret
));
540 /****************************************************************************
541 Read data from a file descriptor with a timout in msec.
542 mincount = if timeout, minimum to read before returning
543 maxcount = number to be read.
544 time_out = timeout in milliseconds
545 NB. This can be called with a non-socket fd, don't change
546 sys_read() to sys_recv() or other socket call.
547 ****************************************************************************/
549 NTSTATUS
read_fd_with_timeout(int fd
, char *buf
,
550 size_t mincnt
, size_t maxcnt
,
551 unsigned int time_out
,
558 struct timeval timeout
;
559 char addr
[INET6_ADDRSTRLEN
];
562 /* just checking .... */
572 while (nread
< mincnt
) {
573 readret
= sys_read(fd
, buf
+ nread
, maxcnt
- nread
);
576 DEBUG(5,("read_fd_with_timeout: "
577 "blocking read. EOF from client.\n"));
578 return NT_STATUS_END_OF_FILE
;
583 if (fd
== get_client_fd()) {
584 /* Try and give an error message
585 * saying what client failed. */
586 DEBUG(0,("read_fd_with_timeout: "
587 "client %s read error = %s.\n",
588 get_peer_addr(fd
,addr
,sizeof(addr
)),
589 strerror(save_errno
) ));
591 DEBUG(0,("read_fd_with_timeout: "
592 "read error = %s.\n",
593 strerror(save_errno
) ));
595 return map_nt_error_from_unix(save_errno
);
602 /* Most difficult - timeout read */
603 /* If this is ever called on a disk file and
604 mincnt is greater then the filesize then
605 system performance will suffer severely as
606 select always returns true on disk files */
608 /* Set initial timeout */
609 timeout
.tv_sec
= (time_t)(time_out
/ 1000);
610 timeout
.tv_usec
= (long)(1000 * (time_out
% 1000));
612 for (nread
=0; nread
< mincnt
; ) {
616 selrtn
= sys_select_intr(fd
+1,&fds
,NULL
,NULL
,&timeout
);
621 /* something is wrong. Maybe the socket is dead? */
622 if (fd
== get_client_fd()) {
623 /* Try and give an error message saying
624 * what client failed. */
625 DEBUG(0,("read_fd_with_timeout: timeout "
626 "read for client %s. select error = %s.\n",
627 get_peer_addr(fd
,addr
,sizeof(addr
)),
628 strerror(save_errno
) ));
630 DEBUG(0,("read_fd_with_timeout: timeout "
631 "read. select error = %s.\n",
632 strerror(save_errno
) ));
634 return map_nt_error_from_unix(save_errno
);
637 /* Did we timeout ? */
639 DEBUG(10,("read_fd_with_timeout: timeout read. "
640 "select timed out.\n"));
641 return NT_STATUS_IO_TIMEOUT
;
644 readret
= sys_read(fd
, buf
+nread
, maxcnt
-nread
);
647 /* we got EOF on the file descriptor */
648 DEBUG(5,("read_fd_with_timeout: timeout read. "
649 "EOF from client.\n"));
650 return NT_STATUS_END_OF_FILE
;
655 /* the descriptor is probably dead */
656 if (fd
== get_client_fd()) {
657 /* Try and give an error message
658 * saying what client failed. */
659 DEBUG(0,("read_fd_with_timeout: timeout "
660 "read to client %s. read error = %s.\n",
661 get_peer_addr(fd
,addr
,sizeof(addr
)),
662 strerror(save_errno
) ));
664 DEBUG(0,("read_fd_with_timeout: timeout "
665 "read. read error = %s.\n",
666 strerror(save_errno
) ));
668 return map_nt_error_from_unix(errno
);
675 /* Return the number we got */
682 /****************************************************************************
683 Read data from an fd, reading exactly N bytes.
684 NB. This can be called with a non-socket fd, don't add dependencies
686 ****************************************************************************/
688 NTSTATUS
read_data(int fd
, char *buffer
, size_t N
)
690 return read_fd_with_timeout(fd
, buffer
, N
, N
, 0, NULL
);
693 /****************************************************************************
694 Write all data from an iov array
695 NB. This can be called with a non-socket fd, don't add dependencies
697 ****************************************************************************/
699 ssize_t
write_data_iov(int fd
, const struct iovec
*orig_iov
, int iovcnt
)
705 struct iovec
*iov_copy
, *iov
;
708 for (i
=0; i
<iovcnt
; i
++) {
709 to_send
+= orig_iov
[i
].iov_len
;
712 thistime
= sys_writev(fd
, orig_iov
, iovcnt
);
713 if ((thistime
<= 0) || (thistime
== to_send
)) {
719 * We could not send everything in one call. Make a copy of iov that
720 * we can mess with. We keep a copy of the array start in iov_copy for
721 * the TALLOC_FREE, because we're going to modify iov later on,
722 * discarding elements.
725 iov_copy
= (struct iovec
*)TALLOC_MEMDUP(
726 talloc_tos(), orig_iov
, sizeof(struct iovec
) * iovcnt
);
728 if (iov_copy
== NULL
) {
734 while (sent
< to_send
) {
736 * We have to discard "thistime" bytes from the beginning
737 * iov array, "thistime" contains the number of bytes sent
740 while (thistime
> 0) {
741 if (thistime
< iov
[0].iov_len
) {
743 (char *)iov
[0].iov_base
+ thistime
;
744 iov
[0].iov_base
= (void *)new_base
;
745 iov
[0].iov_len
-= thistime
;
748 thistime
-= iov
[0].iov_len
;
753 thistime
= sys_writev(fd
, iov
, iovcnt
);
760 TALLOC_FREE(iov_copy
);
764 /****************************************************************************
766 NB. This can be called with a non-socket fd, don't add dependencies
768 ****************************************************************************/
770 ssize_t
write_data(int fd
, const char *buffer
, size_t N
)
775 iov
.iov_base
= CONST_DISCARD(void *, buffer
);
778 ret
= write_data_iov(fd
, &iov
, 1);
783 if (fd
== get_client_fd()) {
784 char addr
[INET6_ADDRSTRLEN
];
786 * Try and give an error message saying what client failed.
788 DEBUG(0, ("write_data: write failure in writing to client %s. "
789 "Error %s\n", get_peer_addr(fd
,addr
,sizeof(addr
)),
792 DEBUG(0,("write_data: write failure. Error = %s\n",
799 /****************************************************************************
800 Send a keepalive packet (rfc1002).
801 ****************************************************************************/
803 bool send_keepalive(int client
)
805 unsigned char buf
[4];
807 buf
[0] = SMBkeepalive
;
808 buf
[1] = buf
[2] = buf
[3] = 0;
810 return(write_data(client
,(char *)buf
,4) == 4);
813 /****************************************************************************
814 Read 4 bytes of a smb packet and return the smb length of the packet.
815 Store the result in the buffer.
816 This version of the function will return a length of zero on receiving
818 Timeout is in milliseconds.
819 ****************************************************************************/
821 NTSTATUS
read_smb_length_return_keepalive(int fd
, char *inbuf
,
822 unsigned int timeout
,
828 status
= read_fd_with_timeout(fd
, inbuf
, 4, 4, timeout
, NULL
);
830 if (!NT_STATUS_IS_OK(status
)) {
834 *len
= smb_len(inbuf
);
835 msg_type
= CVAL(inbuf
,0);
837 if (msg_type
== SMBkeepalive
) {
838 DEBUG(5,("Got keepalive packet\n"));
841 DEBUG(10,("got smb length of %lu\n",(unsigned long)(*len
)));
846 /****************************************************************************
847 Read 4 bytes of a smb packet and return the smb length of the packet.
848 Store the result in the buffer. This version of the function will
849 never return a session keepalive (length of zero).
850 Timeout is in milliseconds.
851 ****************************************************************************/
853 NTSTATUS
read_smb_length(int fd
, char *inbuf
, unsigned int timeout
,
856 uint8_t msgtype
= SMBkeepalive
;
858 while (msgtype
== SMBkeepalive
) {
861 status
= read_smb_length_return_keepalive(fd
, inbuf
, timeout
,
863 if (!NT_STATUS_IS_OK(status
)) {
867 msgtype
= CVAL(inbuf
, 0);
870 DEBUG(10,("read_smb_length: got smb length of %lu\n",
871 (unsigned long)len
));
876 /****************************************************************************
877 Read an smb from a fd.
878 The timeout is in milliseconds.
879 This function will return on receipt of a session keepalive packet.
880 maxlen is the max number of bytes to return, not including the 4 byte
881 length. If zero it means buflen limit.
882 Doesn't check the MAC on signed packets.
883 ****************************************************************************/
885 NTSTATUS
receive_smb_raw(int fd
, char *buffer
, size_t buflen
, unsigned int timeout
,
886 size_t maxlen
, size_t *p_len
)
891 status
= read_smb_length_return_keepalive(fd
,buffer
,timeout
,&len
);
893 if (!NT_STATUS_IS_OK(status
)) {
894 DEBUG(10, ("receive_smb_raw: %s!\n", nt_errstr(status
)));
899 DEBUG(0,("Invalid packet length! (%lu bytes).\n",
900 (unsigned long)len
));
901 return NT_STATUS_INVALID_PARAMETER
;
906 len
= MIN(len
,maxlen
);
909 status
= read_fd_with_timeout(
910 fd
, buffer
+4, len
, len
, timeout
, &len
);
912 if (!NT_STATUS_IS_OK(status
)) {
916 /* not all of samba3 properly checks for packet-termination
917 * of strings. This ensures that we don't run off into
919 SSVAL(buffer
+4,len
, 0);
926 /****************************************************************************
927 Open a socket of the specified type, port, and address for incoming data.
928 ****************************************************************************/
930 int open_socket_in(int type
,
933 const struct sockaddr_storage
*psock
,
936 struct sockaddr_storage sock
;
938 socklen_t slen
= sizeof(struct sockaddr_in
);
942 #if defined(HAVE_IPV6)
943 if (sock
.ss_family
== AF_INET6
) {
944 ((struct sockaddr_in6
*)&sock
)->sin6_port
= htons(port
);
945 slen
= sizeof(struct sockaddr_in6
);
948 if (sock
.ss_family
== AF_INET
) {
949 ((struct sockaddr_in
*)&sock
)->sin_port
= htons(port
);
952 res
= socket(sock
.ss_family
, type
, 0 );
955 dbgtext( "open_socket_in(): socket() call failed: " );
956 dbgtext( "%s\n", strerror( errno
) );
961 /* This block sets/clears the SO_REUSEADDR and possibly SO_REUSEPORT. */
963 int val
= rebind
? 1 : 0;
964 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEADDR
,
965 (char *)&val
,sizeof(val
)) == -1 ) {
966 if( DEBUGLVL( dlevel
) ) {
967 dbgtext( "open_socket_in(): setsockopt: " );
968 dbgtext( "SO_REUSEADDR = %s ",
969 val
?"true":"false" );
970 dbgtext( "on port %d failed ", port
);
971 dbgtext( "with error = %s\n", strerror(errno
) );
975 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEPORT
,
976 (char *)&val
,sizeof(val
)) == -1 ) {
977 if( DEBUGLVL( dlevel
) ) {
978 dbgtext( "open_socket_in(): setsockopt: ");
979 dbgtext( "SO_REUSEPORT = %s ",
981 dbgtext( "on port %d failed ", port
);
982 dbgtext( "with error = %s\n", strerror(errno
));
985 #endif /* SO_REUSEPORT */
988 /* now we've got a socket - we need to bind it */
989 if (bind(res
, (struct sockaddr
*)&sock
, slen
) == -1 ) {
990 if( DEBUGLVL(dlevel
) && (port
== SMB_PORT1
||
991 port
== SMB_PORT2
|| port
== NMB_PORT
) ) {
992 char addr
[INET6_ADDRSTRLEN
];
993 print_sockaddr(addr
, sizeof(addr
),
995 dbgtext( "bind failed on port %d ", port
);
996 dbgtext( "socket_addr = %s.\n", addr
);
997 dbgtext( "Error = %s\n", strerror(errno
));
1003 DEBUG( 10, ( "bind succeeded on port %d\n", port
) );
1007 struct open_socket_out_state
{
1009 struct event_context
*ev
;
1010 struct sockaddr_storage ss
;
1016 static void open_socket_out_connected(struct tevent_req
*subreq
);
1018 static int open_socket_out_state_destructor(struct open_socket_out_state
*s
)
1026 /****************************************************************************
1027 Create an outgoing socket. timeout is in milliseconds.
1028 **************************************************************************/
1030 struct tevent_req
*open_socket_out_send(TALLOC_CTX
*mem_ctx
,
1031 struct event_context
*ev
,
1032 const struct sockaddr_storage
*pss
,
1036 char addr
[INET6_ADDRSTRLEN
];
1037 struct tevent_req
*result
, *subreq
;
1038 struct open_socket_out_state
*state
;
1041 result
= tevent_req_create(mem_ctx
, &state
,
1042 struct open_socket_out_state
);
1043 if (result
== NULL
) {
1049 state
->wait_nsec
= 10000;
1052 state
->fd
= socket(state
->ss
.ss_family
, SOCK_STREAM
, 0);
1053 if (state
->fd
== -1) {
1054 status
= map_nt_error_from_unix(errno
);
1057 talloc_set_destructor(state
, open_socket_out_state_destructor
);
1059 if (!tevent_req_set_endtime(
1060 result
, ev
, timeval_current_ofs(0, timeout
*1000))) {
1064 #if defined(HAVE_IPV6)
1065 if (pss
->ss_family
== AF_INET6
) {
1066 struct sockaddr_in6
*psa6
;
1067 psa6
= (struct sockaddr_in6
*)&state
->ss
;
1068 psa6
->sin6_port
= htons(port
);
1069 if (psa6
->sin6_scope_id
== 0
1070 && IN6_IS_ADDR_LINKLOCAL(&psa6
->sin6_addr
)) {
1071 setup_linklocal_scope_id(
1072 (struct sockaddr
*)&(state
->ss
));
1074 state
->salen
= sizeof(struct sockaddr_in6
);
1077 if (pss
->ss_family
== AF_INET
) {
1078 struct sockaddr_in
*psa
;
1079 psa
= (struct sockaddr_in
*)&state
->ss
;
1080 psa
->sin_port
= htons(port
);
1081 state
->salen
= sizeof(struct sockaddr_in
);
1084 if (pss
->ss_family
== AF_UNIX
) {
1085 state
->salen
= sizeof(struct sockaddr_un
);
1088 print_sockaddr(addr
, sizeof(addr
), &state
->ss
);
1089 DEBUG(3,("Connecting to %s at port %u\n", addr
, (unsigned int)port
));
1091 subreq
= async_connect_send(state
, state
->ev
, state
->fd
,
1092 (struct sockaddr
*)&state
->ss
,
1094 if ((subreq
== NULL
)
1095 || !tevent_req_set_endtime(
1097 timeval_current_ofs(0, state
->wait_nsec
))) {
1100 tevent_req_set_callback(subreq
, open_socket_out_connected
, result
);
1104 tevent_req_nterror(result
, status
);
1105 return tevent_req_post(result
, ev
);
1107 TALLOC_FREE(result
);
1111 static void open_socket_out_connected(struct tevent_req
*subreq
)
1113 struct tevent_req
*req
=
1114 tevent_req_callback_data(subreq
, struct tevent_req
);
1115 struct open_socket_out_state
*state
=
1116 tevent_req_data(req
, struct open_socket_out_state
);
1120 ret
= async_connect_recv(subreq
, &sys_errno
);
1121 TALLOC_FREE(subreq
);
1123 tevent_req_done(req
);
1129 (sys_errno
== ETIMEDOUT
) ||
1131 (sys_errno
== EINPROGRESS
) ||
1132 (sys_errno
== EALREADY
) ||
1133 (sys_errno
== EAGAIN
)) {
1139 if (state
->wait_nsec
< 250000) {
1140 state
->wait_nsec
*= 1.5;
1143 subreq
= async_connect_send(state
, state
->ev
, state
->fd
,
1144 (struct sockaddr
*)&state
->ss
,
1146 if (tevent_req_nomem(subreq
, req
)) {
1149 if (!tevent_req_set_endtime(
1151 timeval_current_ofs(0, state
->wait_nsec
))) {
1152 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1155 tevent_req_set_callback(subreq
, open_socket_out_connected
, req
);
1160 if (sys_errno
== EISCONN
) {
1161 tevent_req_done(req
);
1167 tevent_req_nterror(req
, map_nt_error_from_unix(sys_errno
));
1170 NTSTATUS
open_socket_out_recv(struct tevent_req
*req
, int *pfd
)
1172 struct open_socket_out_state
*state
=
1173 tevent_req_data(req
, struct open_socket_out_state
);
1176 if (tevent_req_is_nterror(req
, &status
)) {
1181 return NT_STATUS_OK
;
1184 NTSTATUS
open_socket_out(const struct sockaddr_storage
*pss
, uint16_t port
,
1185 int timeout
, int *pfd
)
1187 TALLOC_CTX
*frame
= talloc_stackframe();
1188 struct event_context
*ev
;
1189 struct tevent_req
*req
;
1190 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
1192 ev
= event_context_init(frame
);
1197 req
= open_socket_out_send(frame
, ev
, pss
, port
, timeout
);
1201 if (!tevent_req_poll(req
, ev
)) {
1202 status
= NT_STATUS_INTERNAL_ERROR
;
1205 status
= open_socket_out_recv(req
, pfd
);
1211 struct open_socket_out_defer_state
{
1212 struct event_context
*ev
;
1213 struct sockaddr_storage ss
;
1219 static void open_socket_out_defer_waited(struct tevent_req
*subreq
);
1220 static void open_socket_out_defer_connected(struct tevent_req
*subreq
);
1222 struct tevent_req
*open_socket_out_defer_send(TALLOC_CTX
*mem_ctx
,
1223 struct event_context
*ev
,
1224 struct timeval wait_time
,
1225 const struct sockaddr_storage
*pss
,
1229 struct tevent_req
*req
, *subreq
;
1230 struct open_socket_out_defer_state
*state
;
1232 req
= tevent_req_create(mem_ctx
, &state
,
1233 struct open_socket_out_defer_state
);
1240 state
->timeout
= timeout
;
1242 subreq
= tevent_wakeup_send(
1244 timeval_current_ofs(wait_time
.tv_sec
, wait_time
.tv_usec
));
1245 if (subreq
== NULL
) {
1248 tevent_req_set_callback(subreq
, open_socket_out_defer_waited
, req
);
1255 static void open_socket_out_defer_waited(struct tevent_req
*subreq
)
1257 struct tevent_req
*req
= tevent_req_callback_data(
1258 subreq
, struct tevent_req
);
1259 struct open_socket_out_defer_state
*state
= tevent_req_data(
1260 req
, struct open_socket_out_defer_state
);
1263 ret
= tevent_wakeup_recv(subreq
);
1264 TALLOC_FREE(subreq
);
1266 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
1270 subreq
= open_socket_out_send(state
, state
->ev
, &state
->ss
,
1271 state
->port
, state
->timeout
);
1272 if (tevent_req_nomem(subreq
, req
)) {
1275 tevent_req_set_callback(subreq
, open_socket_out_defer_connected
, req
);
1278 static void open_socket_out_defer_connected(struct tevent_req
*subreq
)
1280 struct tevent_req
*req
= tevent_req_callback_data(
1281 subreq
, struct tevent_req
);
1282 struct open_socket_out_defer_state
*state
= tevent_req_data(
1283 req
, struct open_socket_out_defer_state
);
1286 status
= open_socket_out_recv(subreq
, &state
->fd
);
1287 TALLOC_FREE(subreq
);
1288 if (!NT_STATUS_IS_OK(status
)) {
1289 tevent_req_nterror(req
, status
);
1292 tevent_req_done(req
);
1295 NTSTATUS
open_socket_out_defer_recv(struct tevent_req
*req
, int *pfd
)
1297 struct open_socket_out_defer_state
*state
= tevent_req_data(
1298 req
, struct open_socket_out_defer_state
);
1301 if (tevent_req_is_nterror(req
, &status
)) {
1306 return NT_STATUS_OK
;
1309 /*******************************************************************
1310 Create an outgoing TCP socket to the first addr that connects.
1312 This is for simultaneous connection attempts to port 445 and 139 of a host
1313 or for simultatneous connection attempts to multiple DCs at once. We return
1314 a socket fd of the first successful connection.
1316 @param[in] addrs list of Internet addresses and ports to connect to
1317 @param[in] num_addrs number of address/port pairs in the addrs list
1318 @param[in] timeout time after which we stop waiting for a socket connection
1319 to succeed, given in milliseconds
1320 @param[out] fd_index the entry in addrs which we successfully connected to
1321 @param[out] fd fd of the open and connected socket
1322 @return true on a successful connection, false if all connection attempts
1323 failed or we timed out
1324 *******************************************************************/
1326 bool open_any_socket_out(struct sockaddr_storage
*addrs
, int num_addrs
,
1327 int timeout
, int *fd_index
, int *fd
)
1329 int i
, resulting_index
, res
;
1333 fd_set r_fds
, wr_fds
;
1337 int connect_loop
= 10000; /* 10 milliseconds */
1339 timeout
*= 1000; /* convert to microseconds */
1341 sockets
= SMB_MALLOC_ARRAY(int, num_addrs
);
1343 if (sockets
== NULL
)
1346 resulting_index
= -1;
1348 for (i
=0; i
<num_addrs
; i
++)
1351 for (i
=0; i
<num_addrs
; i
++) {
1352 sockets
[i
] = socket(addrs
[i
].ss_family
, SOCK_STREAM
, 0);
1355 set_blocking(sockets
[i
], false);
1359 good_connect
= false;
1361 for (i
=0; i
<num_addrs
; i
++) {
1362 const struct sockaddr
* a
=
1363 (const struct sockaddr
*)&(addrs
[i
]);
1365 if (sockets
[i
] == -1)
1368 if (sys_connect(sockets
[i
], a
) == 0) {
1369 /* Rather unlikely as we are non-blocking, but it
1370 * might actually happen. */
1371 resulting_index
= i
;
1375 if (errno
== EINPROGRESS
|| errno
== EALREADY
||
1379 errno
== EAGAIN
|| errno
== EINTR
) {
1380 /* These are the error messages that something is
1382 good_connect
= true;
1383 } else if (errno
!= 0) {
1384 /* There was a direct error */
1390 if (!good_connect
) {
1391 /* All of the connect's resulted in real error conditions */
1395 /* Lets see if any of the connect attempts succeeded */
1401 for (i
=0; i
<num_addrs
; i
++) {
1402 if (sockets
[i
] == -1)
1404 FD_SET(sockets
[i
], &wr_fds
);
1405 FD_SET(sockets
[i
], &r_fds
);
1406 if (sockets
[i
]>maxfd
)
1411 tv
.tv_usec
= connect_loop
;
1413 res
= sys_select_intr(maxfd
+1, &r_fds
, &wr_fds
, NULL
, &tv
);
1421 for (i
=0; i
<num_addrs
; i
++) {
1423 if (sockets
[i
] == -1)
1426 /* Stevens, Network Programming says that if there's a
1427 * successful connect, the socket is only writable. Upon an
1428 * error, it's both readable and writable. */
1430 if (FD_ISSET(sockets
[i
], &r_fds
) &&
1431 FD_ISSET(sockets
[i
], &wr_fds
)) {
1432 /* readable and writable, so it's an error */
1438 if (!FD_ISSET(sockets
[i
], &r_fds
) &&
1439 FD_ISSET(sockets
[i
], &wr_fds
)) {
1440 /* Only writable, so it's connected */
1441 resulting_index
= i
;
1448 timeout
-= connect_loop
;
1451 connect_loop
*= 1.5;
1452 if (connect_loop
> timeout
)
1453 connect_loop
= timeout
;
1457 for (i
=0; i
<num_addrs
; i
++) {
1458 if (i
== resulting_index
)
1460 if (sockets
[i
] >= 0)
1464 if (resulting_index
>= 0) {
1465 *fd_index
= resulting_index
;
1466 *fd
= sockets
[*fd_index
];
1467 set_blocking(*fd
, true);
1472 return (resulting_index
>= 0);
1474 /****************************************************************************
1475 Open a connected UDP socket to host on port
1476 **************************************************************************/
1478 int open_udp_socket(const char *host
, int port
)
1480 struct sockaddr_storage ss
;
1483 if (!interpret_string_addr(&ss
, host
, 0)) {
1484 DEBUG(10,("open_udp_socket: can't resolve name %s\n",
1489 res
= socket(ss
.ss_family
, SOCK_DGRAM
, 0);
1494 #if defined(HAVE_IPV6)
1495 if (ss
.ss_family
== AF_INET6
) {
1496 struct sockaddr_in6
*psa6
;
1497 psa6
= (struct sockaddr_in6
*)&ss
;
1498 psa6
->sin6_port
= htons(port
);
1499 if (psa6
->sin6_scope_id
== 0
1500 && IN6_IS_ADDR_LINKLOCAL(&psa6
->sin6_addr
)) {
1501 setup_linklocal_scope_id(
1502 (struct sockaddr
*)&ss
);
1506 if (ss
.ss_family
== AF_INET
) {
1507 struct sockaddr_in
*psa
;
1508 psa
= (struct sockaddr_in
*)&ss
;
1509 psa
->sin_port
= htons(port
);
1512 if (sys_connect(res
,(struct sockaddr
*)&ss
)) {
1520 /*******************************************************************
1521 Return the IP addr of the remote end of a socket as a string.
1522 Optionally return the struct sockaddr_storage.
1523 ******************************************************************/
1525 static const char *get_peer_addr_internal(int fd
,
1527 size_t addr_buf_len
,
1528 struct sockaddr
*pss
,
1531 struct sockaddr_storage ss
;
1532 socklen_t length
= sizeof(ss
);
1534 strlcpy(addr_buf
,"0.0.0.0",addr_buf_len
);
1541 pss
= (struct sockaddr
*)&ss
;
1545 if (getpeername(fd
, (struct sockaddr
*)pss
, plength
) < 0) {
1546 DEBUG(0,("getpeername failed. Error was %s\n",
1551 print_sockaddr_len(addr_buf
,
1558 /*******************************************************************
1559 Matchname - determine if host name matches IP address. Used to
1560 confirm a hostname lookup to prevent spoof attacks.
1561 ******************************************************************/
1563 static bool matchname(const char *remotehost
,
1564 const struct sockaddr
*pss
,
1567 struct addrinfo
*res
= NULL
;
1568 struct addrinfo
*ailist
= NULL
;
1569 char addr_buf
[INET6_ADDRSTRLEN
];
1570 bool ret
= interpret_string_addr_internal(&ailist
,
1572 AI_ADDRCONFIG
|AI_CANONNAME
);
1574 if (!ret
|| ailist
== NULL
) {
1575 DEBUG(3,("matchname: getaddrinfo failed for "
1578 gai_strerror(ret
) ));
1583 * Make sure that getaddrinfo() returns the "correct" host name.
1586 if (ailist
->ai_canonname
== NULL
||
1587 (!strequal(remotehost
, ailist
->ai_canonname
) &&
1588 !strequal(remotehost
, "localhost"))) {
1589 DEBUG(0,("matchname: host name/name mismatch: %s != %s\n",
1591 ailist
->ai_canonname
?
1592 ailist
->ai_canonname
: "(NULL)"));
1593 freeaddrinfo(ailist
);
1597 /* Look up the host address in the address list we just got. */
1598 for (res
= ailist
; res
; res
= res
->ai_next
) {
1599 if (!res
->ai_addr
) {
1602 if (sockaddr_equal((const struct sockaddr
*)res
->ai_addr
,
1603 (struct sockaddr
*)pss
)) {
1604 freeaddrinfo(ailist
);
1610 * The host name does not map to the original host address. Perhaps
1611 * someone has compromised a name server. More likely someone botched
1612 * it, but that could be dangerous, too.
1615 DEBUG(0,("matchname: host name/address mismatch: %s != %s\n",
1616 print_sockaddr_len(addr_buf
,
1620 ailist
->ai_canonname
? ailist
->ai_canonname
: "(NULL)"));
1623 freeaddrinfo(ailist
);
1628 /*******************************************************************
1629 Deal with the singleton cache.
1630 ******************************************************************/
1632 struct name_addr_pair
{
1633 struct sockaddr_storage ss
;
1637 /*******************************************************************
1638 Lookup a name/addr pair. Returns memory allocated from memcache.
1639 ******************************************************************/
1641 static bool lookup_nc(struct name_addr_pair
*nc
)
1647 if (!memcache_lookup(
1648 NULL
, SINGLETON_CACHE
,
1649 data_blob_string_const_null("get_peer_name"),
1654 memcpy(&nc
->ss
, tmp
.data
, sizeof(nc
->ss
));
1655 nc
->name
= (const char *)tmp
.data
+ sizeof(nc
->ss
);
1659 /*******************************************************************
1660 Save a name/addr pair.
1661 ******************************************************************/
1663 static void store_nc(const struct name_addr_pair
*nc
)
1666 size_t namelen
= strlen(nc
->name
);
1668 tmp
= data_blob(NULL
, sizeof(nc
->ss
) + namelen
+ 1);
1672 memcpy(tmp
.data
, &nc
->ss
, sizeof(nc
->ss
));
1673 memcpy(tmp
.data
+sizeof(nc
->ss
), nc
->name
, namelen
+1);
1675 memcache_add(NULL
, SINGLETON_CACHE
,
1676 data_blob_string_const_null("get_peer_name"),
1678 data_blob_free(&tmp
);
1681 /*******************************************************************
1682 Return the DNS name of the remote end of a socket.
1683 ******************************************************************/
1685 const char *get_peer_name(int fd
, bool force_lookup
)
1687 struct name_addr_pair nc
;
1688 char addr_buf
[INET6_ADDRSTRLEN
];
1689 struct sockaddr_storage ss
;
1690 socklen_t length
= sizeof(ss
);
1693 char name_buf
[MAX_DNS_NAME_LENGTH
];
1694 char tmp_name
[MAX_DNS_NAME_LENGTH
];
1696 /* reverse lookups can be *very* expensive, and in many
1697 situations won't work because many networks don't link dhcp
1698 with dns. To avoid the delay we avoid the lookup if
1700 if (!lp_hostname_lookups() && (force_lookup
== false)) {
1701 length
= sizeof(nc
.ss
);
1702 nc
.name
= get_peer_addr_internal(fd
, addr_buf
, sizeof(addr_buf
),
1703 (struct sockaddr
*)&nc
.ss
, &length
);
1706 return nc
.name
? nc
.name
: "UNKNOWN";
1711 memset(&ss
, '\0', sizeof(ss
));
1712 p
= get_peer_addr_internal(fd
, addr_buf
, sizeof(addr_buf
), (struct sockaddr
*)&ss
, &length
);
1714 /* it might be the same as the last one - save some DNS work */
1715 if (sockaddr_equal((struct sockaddr
*)&ss
, (struct sockaddr
*)&nc
.ss
)) {
1716 return nc
.name
? nc
.name
: "UNKNOWN";
1719 /* Not the same. We need to lookup. */
1724 /* Look up the remote host name. */
1725 ret
= sys_getnameinfo((struct sockaddr
*)&ss
,
1734 DEBUG(1,("get_peer_name: getnameinfo failed "
1735 "for %s with error %s\n",
1737 gai_strerror(ret
)));
1738 strlcpy(name_buf
, p
, sizeof(name_buf
));
1740 if (!matchname(name_buf
, (struct sockaddr
*)&ss
, length
)) {
1741 DEBUG(0,("Matchname failed on %s %s\n",name_buf
,p
));
1742 strlcpy(name_buf
,"UNKNOWN",sizeof(name_buf
));
1746 /* can't pass the same source and dest strings in when you
1747 use --enable-developer or the clobber_region() call will
1750 strlcpy(tmp_name
, name_buf
, sizeof(tmp_name
));
1751 alpha_strcpy(name_buf
, tmp_name
, "_-.", sizeof(name_buf
));
1752 if (strstr(name_buf
,"..")) {
1753 strlcpy(name_buf
, "UNKNOWN", sizeof(name_buf
));
1761 return nc
.name
? nc
.name
: "UNKNOWN";
1764 /*******************************************************************
1765 Return the IP addr of the remote end of a socket as a string.
1766 ******************************************************************/
1768 const char *get_peer_addr(int fd
, char *addr
, size_t addr_len
)
1770 return get_peer_addr_internal(fd
, addr
, addr_len
, NULL
, NULL
);
1773 /*******************************************************************
1774 Create protected unix domain socket.
1776 Some unixes cannot set permissions on a ux-dom-sock, so we
1777 have to make sure that the directory contains the protection
1778 permissions instead.
1779 ******************************************************************/
1781 int create_pipe_sock(const char *socket_dir
,
1782 const char *socket_name
,
1785 #ifdef HAVE_UNIXSOCKET
1786 struct sockaddr_un sunaddr
;
1792 old_umask
= umask(0);
1794 /* Create the socket directory or reuse the existing one */
1796 if (lstat(socket_dir
, &st
) == -1) {
1797 if (errno
== ENOENT
) {
1798 /* Create directory */
1799 if (mkdir(socket_dir
, dir_perms
) == -1) {
1800 DEBUG(0, ("error creating socket directory "
1801 "%s: %s\n", socket_dir
,
1806 DEBUG(0, ("lstat failed on socket directory %s: %s\n",
1807 socket_dir
, strerror(errno
)));
1811 /* Check ownership and permission on existing directory */
1812 if (!S_ISDIR(st
.st_mode
)) {
1813 DEBUG(0, ("socket directory %s isn't a directory\n",
1817 if ((st
.st_uid
!= sec_initial_uid()) ||
1818 ((st
.st_mode
& 0777) != dir_perms
)) {
1819 DEBUG(0, ("invalid permissions on socket directory "
1820 "%s\n", socket_dir
));
1825 /* Create the socket file */
1827 sock
= socket(AF_UNIX
, SOCK_STREAM
, 0);
1830 DEBUG(0, ("create_pipe_sock: socket error %s\n",
1835 if (asprintf(&path
, "%s/%s", socket_dir
, socket_name
) == -1) {
1840 memset(&sunaddr
, 0, sizeof(sunaddr
));
1841 sunaddr
.sun_family
= AF_UNIX
;
1842 strlcpy(sunaddr
.sun_path
, path
, sizeof(sunaddr
.sun_path
));
1844 if (bind(sock
, (struct sockaddr
*)&sunaddr
, sizeof(sunaddr
)) == -1) {
1845 DEBUG(0, ("bind failed on pipe socket %s: %s\n", path
,
1850 if (listen(sock
, 5) == -1) {
1851 DEBUG(0, ("listen failed on pipe socket %s: %s\n", path
,
1871 DEBUG(0, ("create_pipe_sock: No Unix sockets on this system\n"));
1873 #endif /* HAVE_UNIXSOCKET */
1876 /****************************************************************************
1877 Get my own canonical name, including domain.
1878 ****************************************************************************/
1880 const char *get_mydnsfullname(void)
1882 struct addrinfo
*res
= NULL
;
1883 char my_hostname
[HOST_NAME_MAX
];
1887 if (memcache_lookup(NULL
, SINGLETON_CACHE
,
1888 data_blob_string_const_null("get_mydnsfullname"),
1890 SMB_ASSERT(tmp
.length
> 0);
1891 return (const char *)tmp
.data
;
1894 /* get my host name */
1895 if (gethostname(my_hostname
, sizeof(my_hostname
)) == -1) {
1896 DEBUG(0,("get_mydnsfullname: gethostname failed\n"));
1900 /* Ensure null termination. */
1901 my_hostname
[sizeof(my_hostname
)-1] = '\0';
1903 ret
= interpret_string_addr_internal(&res
,
1905 AI_ADDRCONFIG
|AI_CANONNAME
);
1907 if (!ret
|| res
== NULL
) {
1908 DEBUG(3,("get_mydnsfullname: getaddrinfo failed for "
1911 gai_strerror(ret
) ));
1916 * Make sure that getaddrinfo() returns the "correct" host name.
1919 if (res
->ai_canonname
== NULL
) {
1920 DEBUG(3,("get_mydnsfullname: failed to get "
1921 "canonical name for %s\n",
1927 /* This copies the data, so we must do a lookup
1928 * afterwards to find the value to return.
1931 memcache_add(NULL
, SINGLETON_CACHE
,
1932 data_blob_string_const_null("get_mydnsfullname"),
1933 data_blob_string_const_null(res
->ai_canonname
));
1935 if (!memcache_lookup(NULL
, SINGLETON_CACHE
,
1936 data_blob_string_const_null("get_mydnsfullname"),
1938 tmp
= data_blob_talloc(talloc_tos(), res
->ai_canonname
,
1939 strlen(res
->ai_canonname
) + 1);
1944 return (const char *)tmp
.data
;
1947 /************************************************************
1949 ************************************************************/
1951 bool is_myname_or_ipaddr(const char *s
)
1953 TALLOC_CTX
*ctx
= talloc_tos();
1954 char addr
[INET6_ADDRSTRLEN
];
1956 const char *dnsname
;
1957 char *servername
= NULL
;
1963 /* Santize the string from '\\name' */
1964 name
= talloc_strdup(ctx
, s
);
1969 servername
= strrchr_m(name
, '\\' );
1976 /* Optimize for the common case */
1977 if (strequal(servername
, global_myname())) {
1981 /* Check for an alias */
1982 if (is_myname(servername
)) {
1986 /* Check for loopback */
1987 if (strequal(servername
, "127.0.0.1") ||
1988 strequal(servername
, "::1")) {
1992 if (strequal(servername
, "localhost")) {
1996 /* Maybe it's my dns name */
1997 dnsname
= get_mydnsfullname();
1998 if (dnsname
&& strequal(servername
, dnsname
)) {
2002 /* Handle possible CNAME records - convert to an IP addr. */
2003 if (!is_ipaddress(servername
)) {
2004 /* Use DNS to resolve the name, but only the first address */
2005 struct sockaddr_storage ss
;
2006 if (interpret_string_addr(&ss
, servername
, 0)) {
2007 print_sockaddr(addr
,
2014 /* Maybe its an IP address? */
2015 if (is_ipaddress(servername
)) {
2016 struct sockaddr_storage ss
;
2017 struct iface_struct
*nics
;
2020 if (!interpret_string_addr(&ss
, servername
, AI_NUMERICHOST
)) {
2024 if (ismyaddr((struct sockaddr
*)&ss
)) {
2028 if (is_zero_addr((struct sockaddr
*)&ss
) ||
2029 is_loopback_addr((struct sockaddr
*)&ss
)) {
2033 n
= get_interfaces(talloc_tos(), &nics
);
2034 for (i
=0; i
<n
; i
++) {
2035 if (sockaddr_equal((struct sockaddr
*)&nics
[i
].ip
, (struct sockaddr
*)&ss
)) {
2047 struct getaddrinfo_state
{
2049 const char *service
;
2050 const struct addrinfo
*hints
;
2051 struct addrinfo
*res
;
2055 static void getaddrinfo_do(void *private_data
);
2056 static void getaddrinfo_done(struct tevent_req
*subreq
);
2058 struct tevent_req
*getaddrinfo_send(TALLOC_CTX
*mem_ctx
,
2059 struct tevent_context
*ev
,
2060 struct fncall_context
*ctx
,
2062 const char *service
,
2063 const struct addrinfo
*hints
)
2065 struct tevent_req
*req
, *subreq
;
2066 struct getaddrinfo_state
*state
;
2068 req
= tevent_req_create(mem_ctx
, &state
, struct getaddrinfo_state
);
2074 state
->service
= service
;
2075 state
->hints
= hints
;
2077 subreq
= fncall_send(state
, ev
, ctx
, getaddrinfo_do
, state
);
2078 if (tevent_req_nomem(subreq
, req
)) {
2079 return tevent_req_post(req
, ev
);
2081 tevent_req_set_callback(subreq
, getaddrinfo_done
, req
);
2085 static void getaddrinfo_do(void *private_data
)
2087 struct getaddrinfo_state
*state
=
2088 (struct getaddrinfo_state
*)private_data
;
2090 state
->ret
= getaddrinfo(state
->node
, state
->service
, state
->hints
,
2094 static void getaddrinfo_done(struct tevent_req
*subreq
)
2096 struct tevent_req
*req
= tevent_req_callback_data(
2097 subreq
, struct tevent_req
);
2100 ret
= fncall_recv(subreq
, &err
);
2101 TALLOC_FREE(subreq
);
2103 tevent_req_error(req
, err
);
2106 tevent_req_done(req
);
2109 int getaddrinfo_recv(struct tevent_req
*req
, struct addrinfo
**res
)
2111 struct getaddrinfo_state
*state
= tevent_req_data(
2112 req
, struct getaddrinfo_state
);
2115 if (tevent_req_is_unix_error(req
, &err
)) {
2123 if (state
->ret
== 0) {