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 Get a port number in host byte order from a sockaddr_storage.
26 ****************************************************************************/
28 uint16_t get_sockaddr_port(const struct sockaddr_storage
*pss
)
32 if (pss
->ss_family
!= AF_INET
) {
33 #if defined(HAVE_IPV6)
35 const struct sockaddr_in6
*sa6
=
36 (const struct sockaddr_in6
*)pss
;
37 port
= ntohs(sa6
->sin6_port
);
40 const struct sockaddr_in
*sa
=
41 (const struct sockaddr_in
*)pss
;
42 port
= ntohs(sa
->sin_port
);
47 /****************************************************************************
48 Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
49 ****************************************************************************/
51 static char *print_sockaddr_len(char *dest
,
53 const struct sockaddr
*psa
,
59 (void)sys_getnameinfo(psa
,
67 /****************************************************************************
68 Print out an IPv4 or IPv6 address from a struct sockaddr_storage.
69 ****************************************************************************/
71 char *print_sockaddr(char *dest
,
73 const struct sockaddr_storage
*psa
)
75 return print_sockaddr_len(dest
, destlen
, (struct sockaddr
*)psa
,
76 sizeof(struct sockaddr_storage
));
79 /****************************************************************************
80 Print out a canonical IPv4 or IPv6 address from a struct sockaddr_storage.
81 ****************************************************************************/
83 char *print_canonical_sockaddr(TALLOC_CTX
*ctx
,
84 const struct sockaddr_storage
*pss
)
86 char addr
[INET6_ADDRSTRLEN
];
90 /* Linux getnameinfo() man pages says port is unitialized if
91 service name is NULL. */
93 ret
= sys_getnameinfo((const struct sockaddr
*)pss
,
94 sizeof(struct sockaddr_storage
),
102 if (pss
->ss_family
!= AF_INET
) {
103 #if defined(HAVE_IPV6)
104 dest
= talloc_asprintf(ctx
, "[%s]", addr
);
109 dest
= talloc_asprintf(ctx
, "%s", addr
);
115 /****************************************************************************
116 Return the string of an IP address (IPv4 or IPv6).
117 ****************************************************************************/
119 static const char *get_socket_addr(int fd
, char *addr_buf
, size_t addr_len
)
121 struct sockaddr_storage sa
;
122 socklen_t length
= sizeof(sa
);
124 /* Ok, returning a hard coded IPv4 address
125 * is bogus, but it's just as bogus as a
126 * zero IPv6 address. No good choice here.
129 strlcpy(addr_buf
, "0.0.0.0", addr_len
);
135 if (getsockname(fd
, (struct sockaddr
*)&sa
, &length
) < 0) {
136 DEBUG(0,("getsockname failed. Error was %s\n",
141 return print_sockaddr_len(addr_buf
, addr_len
, (struct sockaddr
*)&sa
, length
);
144 /****************************************************************************
145 Return the port number we've bound to on a socket.
146 ****************************************************************************/
148 int get_socket_port(int fd
)
150 struct sockaddr_storage sa
;
151 socklen_t length
= sizeof(sa
);
157 if (getsockname(fd
, (struct sockaddr
*)&sa
, &length
) < 0) {
158 DEBUG(0,("getpeername failed. Error was %s\n",
163 #if defined(HAVE_IPV6)
164 if (sa
.ss_family
== AF_INET6
) {
165 return ntohs(((struct sockaddr_in6
*)&sa
)->sin6_port
);
168 if (sa
.ss_family
== AF_INET
) {
169 return ntohs(((struct sockaddr_in
*)&sa
)->sin_port
);
174 const char *client_name(int fd
)
176 return get_peer_name(fd
,false);
179 const char *client_addr(int fd
, char *addr
, size_t addrlen
)
181 return get_peer_addr(fd
,addr
,addrlen
);
184 const char *client_socket_addr(int fd
, char *addr
, size_t addr_len
)
186 return get_socket_addr(fd
, addr
, addr_len
);
190 /* Not currently used. JRA. */
191 int client_socket_port(int fd
)
193 return get_socket_port(fd
);
197 /****************************************************************************
198 Accessor functions to make thread-safe code easier later...
199 ****************************************************************************/
201 void set_smb_read_error(enum smb_read_errors
*pre
,
202 enum smb_read_errors newerr
)
209 void cond_set_smb_read_error(enum smb_read_errors
*pre
,
210 enum smb_read_errors newerr
)
212 if (pre
&& *pre
== SMB_READ_OK
) {
217 /****************************************************************************
218 Determine if a file descriptor is in fact a socket.
219 ****************************************************************************/
221 bool is_a_socket(int fd
)
226 return(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&v
, &l
) == 0);
229 enum SOCK_OPT_TYPES
{OPT_BOOL
,OPT_INT
,OPT_ON
};
231 typedef struct smb_socket_option
{
239 static const smb_socket_option socket_options
[] = {
240 {"SO_KEEPALIVE", SOL_SOCKET
, SO_KEEPALIVE
, 0, OPT_BOOL
},
241 {"SO_REUSEADDR", SOL_SOCKET
, SO_REUSEADDR
, 0, OPT_BOOL
},
242 {"SO_BROADCAST", SOL_SOCKET
, SO_BROADCAST
, 0, OPT_BOOL
},
244 {"TCP_NODELAY", IPPROTO_TCP
, TCP_NODELAY
, 0, OPT_BOOL
},
247 {"TCP_KEEPCNT", IPPROTO_TCP
, TCP_KEEPCNT
, 0, OPT_INT
},
250 {"TCP_KEEPIDLE", IPPROTO_TCP
, TCP_KEEPIDLE
, 0, OPT_INT
},
253 {"TCP_KEEPINTVL", IPPROTO_TCP
, TCP_KEEPINTVL
, 0, OPT_INT
},
255 #ifdef IPTOS_LOWDELAY
256 {"IPTOS_LOWDELAY", IPPROTO_IP
, IP_TOS
, IPTOS_LOWDELAY
, OPT_ON
},
258 #ifdef IPTOS_THROUGHPUT
259 {"IPTOS_THROUGHPUT", IPPROTO_IP
, IP_TOS
, IPTOS_THROUGHPUT
, OPT_ON
},
262 {"SO_REUSEPORT", SOL_SOCKET
, SO_REUSEPORT
, 0, OPT_BOOL
},
265 {"SO_SNDBUF", SOL_SOCKET
, SO_SNDBUF
, 0, OPT_INT
},
268 {"SO_RCVBUF", SOL_SOCKET
, SO_RCVBUF
, 0, OPT_INT
},
271 {"SO_SNDLOWAT", SOL_SOCKET
, SO_SNDLOWAT
, 0, OPT_INT
},
274 {"SO_RCVLOWAT", SOL_SOCKET
, SO_RCVLOWAT
, 0, OPT_INT
},
277 {"SO_SNDTIMEO", SOL_SOCKET
, SO_SNDTIMEO
, 0, OPT_INT
},
280 {"SO_RCVTIMEO", SOL_SOCKET
, SO_RCVTIMEO
, 0, OPT_INT
},
283 {"TCP_FASTACK", IPPROTO_TCP
, TCP_FASTACK
, 0, OPT_INT
},
286 {"TCP_QUICKACK", IPPROTO_TCP
, TCP_QUICKACK
, 0, OPT_BOOL
},
290 /****************************************************************************
291 Print socket options.
292 ****************************************************************************/
294 static void print_socket_options(int s
)
298 const smb_socket_option
*p
= &socket_options
[0];
300 /* wrapped in if statement to prevent streams
301 * leak in SCO Openserver 5.0 */
302 /* reported on samba-technical --jerry */
303 if ( DEBUGLEVEL
>= 5 ) {
304 DEBUG(5,("Socket options:\n"));
305 for (; p
->name
!= NULL
; p
++) {
306 if (getsockopt(s
, p
->level
, p
->option
,
307 (void *)&value
, &vlen
) == -1) {
308 DEBUGADD(5,("\tCould not test socket option %s.\n",
311 DEBUGADD(5,("\t%s = %d\n",
318 /****************************************************************************
319 Set user socket options.
320 ****************************************************************************/
322 void set_socket_options(int fd
, const char *options
)
324 TALLOC_CTX
*ctx
= talloc_stackframe();
327 while (next_token_talloc(ctx
, &options
, &tok
," \t,")) {
331 bool got_value
= false;
333 if ((p
= strchr_m(tok
,'='))) {
339 for (i
=0;socket_options
[i
].name
;i
++)
340 if (strequal(socket_options
[i
].name
,tok
))
343 if (!socket_options
[i
].name
) {
344 DEBUG(0,("Unknown socket option %s\n",tok
));
348 switch (socket_options
[i
].opttype
) {
351 ret
= setsockopt(fd
,socket_options
[i
].level
,
352 socket_options
[i
].option
,
353 (char *)&value
,sizeof(int));
358 DEBUG(0,("syntax error - %s "
359 "does not take a value\n",tok
));
362 int on
= socket_options
[i
].value
;
363 ret
= setsockopt(fd
,socket_options
[i
].level
,
364 socket_options
[i
].option
,
365 (char *)&on
,sizeof(int));
371 /* be aware that some systems like Solaris return
372 * EINVAL to a setsockopt() call when the client
373 * sent a RST previously - no need to worry */
374 DEBUG(2,("Failed to set socket option %s (Error %s)\n",
375 tok
, strerror(errno
) ));
380 print_socket_options(fd
);
383 /****************************************************************************
385 ****************************************************************************/
387 ssize_t
read_udp_v4_socket(int fd
,
390 struct sockaddr_storage
*psa
)
393 socklen_t socklen
= sizeof(*psa
);
394 struct sockaddr_in
*si
= (struct sockaddr_in
*)psa
;
396 memset((char *)psa
,'\0',socklen
);
398 ret
= (ssize_t
)sys_recvfrom(fd
,buf
,len
,0,
399 (struct sockaddr
*)psa
,&socklen
);
401 /* Don't print a low debug error for a non-blocking socket. */
402 if (errno
== EAGAIN
) {
403 DEBUG(10,("read_udp_v4_socket: returned EAGAIN\n"));
405 DEBUG(2,("read_udp_v4_socket: failed. errno=%s\n",
411 if (psa
->ss_family
!= AF_INET
) {
412 DEBUG(2,("read_udp_v4_socket: invalid address family %d "
413 "(not IPv4)\n", (int)psa
->ss_family
));
417 DEBUG(10,("read_udp_v4_socket: ip %s port %d read: %lu\n",
418 inet_ntoa(si
->sin_addr
),
420 (unsigned long)ret
));
425 /****************************************************************************
426 Read data from a file descriptor with a timout in msec.
427 mincount = if timeout, minimum to read before returning
428 maxcount = number to be read.
429 time_out = timeout in milliseconds
430 NB. This can be called with a non-socket fd, don't change
431 sys_read() to sys_recv() or other socket call.
432 ****************************************************************************/
434 NTSTATUS
read_fd_with_timeout(int fd
, char *buf
,
435 size_t mincnt
, size_t maxcnt
,
436 unsigned int time_out
,
443 struct timeval timeout
;
444 char addr
[INET6_ADDRSTRLEN
];
447 /* just checking .... */
457 while (nread
< mincnt
) {
458 readret
= sys_read(fd
, buf
+ nread
, maxcnt
- nread
);
461 DEBUG(5,("read_fd_with_timeout: "
462 "blocking read. EOF from client.\n"));
463 return NT_STATUS_END_OF_FILE
;
468 if (fd
== get_client_fd()) {
469 /* Try and give an error message
470 * saying what client failed. */
471 DEBUG(0,("read_fd_with_timeout: "
472 "client %s read error = %s.\n",
473 get_peer_addr(fd
,addr
,sizeof(addr
)),
474 strerror(save_errno
) ));
476 DEBUG(0,("read_fd_with_timeout: "
477 "read error = %s.\n",
478 strerror(save_errno
) ));
480 return map_nt_error_from_unix(save_errno
);
487 /* Most difficult - timeout read */
488 /* If this is ever called on a disk file and
489 mincnt is greater then the filesize then
490 system performance will suffer severely as
491 select always returns true on disk files */
493 /* Set initial timeout */
494 timeout
.tv_sec
= (time_t)(time_out
/ 1000);
495 timeout
.tv_usec
= (long)(1000 * (time_out
% 1000));
497 for (nread
=0; nread
< mincnt
; ) {
501 selrtn
= sys_select_intr(fd
+1,&fds
,NULL
,NULL
,&timeout
);
506 /* something is wrong. Maybe the socket is dead? */
507 if (fd
== get_client_fd()) {
508 /* Try and give an error message saying
509 * what client failed. */
510 DEBUG(0,("read_fd_with_timeout: timeout "
511 "read for client %s. select error = %s.\n",
512 get_peer_addr(fd
,addr
,sizeof(addr
)),
513 strerror(save_errno
) ));
515 DEBUG(0,("read_fd_with_timeout: timeout "
516 "read. select error = %s.\n",
517 strerror(save_errno
) ));
519 return map_nt_error_from_unix(save_errno
);
522 /* Did we timeout ? */
524 DEBUG(10,("read_fd_with_timeout: timeout read. "
525 "select timed out.\n"));
526 return NT_STATUS_IO_TIMEOUT
;
529 readret
= sys_read(fd
, buf
+nread
, maxcnt
-nread
);
532 /* we got EOF on the file descriptor */
533 DEBUG(5,("read_fd_with_timeout: timeout read. "
534 "EOF from client.\n"));
535 return NT_STATUS_END_OF_FILE
;
540 /* the descriptor is probably dead */
541 if (fd
== get_client_fd()) {
542 /* Try and give an error message
543 * saying what client failed. */
544 DEBUG(0,("read_fd_with_timeout: timeout "
545 "read to client %s. read error = %s.\n",
546 get_peer_addr(fd
,addr
,sizeof(addr
)),
547 strerror(save_errno
) ));
549 DEBUG(0,("read_fd_with_timeout: timeout "
550 "read. read error = %s.\n",
551 strerror(save_errno
) ));
553 return map_nt_error_from_unix(errno
);
560 /* Return the number we got */
567 /****************************************************************************
568 Read data from an fd, reading exactly N bytes.
569 NB. This can be called with a non-socket fd, don't add dependencies
571 ****************************************************************************/
573 NTSTATUS
read_data(int fd
, char *buffer
, size_t N
)
575 return read_fd_with_timeout(fd
, buffer
, N
, N
, 0, NULL
);
578 /****************************************************************************
579 Write all data from an iov array
580 NB. This can be called with a non-socket fd, don't add dependencies
582 ****************************************************************************/
584 ssize_t
write_data_iov(int fd
, const struct iovec
*orig_iov
, int iovcnt
)
590 struct iovec
*iov_copy
, *iov
;
593 for (i
=0; i
<iovcnt
; i
++) {
594 to_send
+= orig_iov
[i
].iov_len
;
597 thistime
= sys_writev(fd
, orig_iov
, iovcnt
);
598 if ((thistime
<= 0) || (thistime
== to_send
)) {
604 * We could not send everything in one call. Make a copy of iov that
605 * we can mess with. We keep a copy of the array start in iov_copy for
606 * the TALLOC_FREE, because we're going to modify iov later on,
607 * discarding elements.
610 iov_copy
= (struct iovec
*)TALLOC_MEMDUP(
611 talloc_tos(), orig_iov
, sizeof(struct iovec
) * iovcnt
);
613 if (iov_copy
== NULL
) {
619 while (sent
< to_send
) {
621 * We have to discard "thistime" bytes from the beginning
622 * iov array, "thistime" contains the number of bytes sent
625 while (thistime
> 0) {
626 if (thistime
< iov
[0].iov_len
) {
628 (char *)iov
[0].iov_base
+ thistime
;
629 iov
[0].iov_base
= (void *)new_base
;
630 iov
[0].iov_len
-= thistime
;
633 thistime
-= iov
[0].iov_len
;
638 thistime
= sys_writev(fd
, iov
, iovcnt
);
645 TALLOC_FREE(iov_copy
);
649 /****************************************************************************
651 NB. This can be called with a non-socket fd, don't add dependencies
653 ****************************************************************************/
655 ssize_t
write_data(int fd
, const char *buffer
, size_t N
)
660 iov
.iov_base
= CONST_DISCARD(void *, buffer
);
663 ret
= write_data_iov(fd
, &iov
, 1);
668 if (fd
== get_client_fd()) {
669 char addr
[INET6_ADDRSTRLEN
];
671 * Try and give an error message saying what client failed.
673 DEBUG(0, ("write_data: write failure in writing to client %s. "
674 "Error %s\n", get_peer_addr(fd
,addr
,sizeof(addr
)),
677 DEBUG(0,("write_data: write failure. Error = %s\n",
684 /****************************************************************************
685 Send a keepalive packet (rfc1002).
686 ****************************************************************************/
688 bool send_keepalive(int client
)
690 unsigned char buf
[4];
692 buf
[0] = SMBkeepalive
;
693 buf
[1] = buf
[2] = buf
[3] = 0;
695 return(write_data(client
,(char *)buf
,4) == 4);
698 /****************************************************************************
699 Read 4 bytes of a smb packet and return the smb length of the packet.
700 Store the result in the buffer.
701 This version of the function will return a length of zero on receiving
703 Timeout is in milliseconds.
704 ****************************************************************************/
706 NTSTATUS
read_smb_length_return_keepalive(int fd
, char *inbuf
,
707 unsigned int timeout
,
713 status
= read_fd_with_timeout(fd
, inbuf
, 4, 4, timeout
, NULL
);
715 if (!NT_STATUS_IS_OK(status
)) {
719 *len
= smb_len(inbuf
);
720 msg_type
= CVAL(inbuf
,0);
722 if (msg_type
== SMBkeepalive
) {
723 DEBUG(5,("Got keepalive packet\n"));
726 DEBUG(10,("got smb length of %lu\n",(unsigned long)(*len
)));
731 /****************************************************************************
732 Read 4 bytes of a smb packet and return the smb length of the packet.
733 Store the result in the buffer. This version of the function will
734 never return a session keepalive (length of zero).
735 Timeout is in milliseconds.
736 ****************************************************************************/
738 NTSTATUS
read_smb_length(int fd
, char *inbuf
, unsigned int timeout
,
741 uint8_t msgtype
= SMBkeepalive
;
743 while (msgtype
== SMBkeepalive
) {
746 status
= read_smb_length_return_keepalive(fd
, inbuf
, timeout
,
748 if (!NT_STATUS_IS_OK(status
)) {
752 msgtype
= CVAL(inbuf
, 0);
755 DEBUG(10,("read_smb_length: got smb length of %lu\n",
756 (unsigned long)len
));
761 /****************************************************************************
762 Read an smb from a fd.
763 The timeout is in milliseconds.
764 This function will return on receipt of a session keepalive packet.
765 maxlen is the max number of bytes to return, not including the 4 byte
766 length. If zero it means buflen limit.
767 Doesn't check the MAC on signed packets.
768 ****************************************************************************/
770 NTSTATUS
receive_smb_raw(int fd
, char *buffer
, size_t buflen
, unsigned int timeout
,
771 size_t maxlen
, size_t *p_len
)
776 status
= read_smb_length_return_keepalive(fd
,buffer
,timeout
,&len
);
778 if (!NT_STATUS_IS_OK(status
)) {
779 DEBUG(10, ("receive_smb_raw: %s!\n", nt_errstr(status
)));
784 DEBUG(0,("Invalid packet length! (%lu bytes).\n",
785 (unsigned long)len
));
786 return NT_STATUS_INVALID_PARAMETER
;
791 len
= MIN(len
,maxlen
);
794 status
= read_fd_with_timeout(
795 fd
, buffer
+4, len
, len
, timeout
, &len
);
797 if (!NT_STATUS_IS_OK(status
)) {
801 /* not all of samba3 properly checks for packet-termination
802 * of strings. This ensures that we don't run off into
804 SSVAL(buffer
+4,len
, 0);
811 /****************************************************************************
812 Open a socket of the specified type, port, and address for incoming data.
813 ****************************************************************************/
815 int open_socket_in(int type
,
818 const struct sockaddr_storage
*psock
,
821 struct sockaddr_storage sock
;
823 socklen_t slen
= sizeof(struct sockaddr_in
);
827 #if defined(HAVE_IPV6)
828 if (sock
.ss_family
== AF_INET6
) {
829 ((struct sockaddr_in6
*)&sock
)->sin6_port
= htons(port
);
830 slen
= sizeof(struct sockaddr_in6
);
833 if (sock
.ss_family
== AF_INET
) {
834 ((struct sockaddr_in
*)&sock
)->sin_port
= htons(port
);
837 res
= socket(sock
.ss_family
, type
, 0 );
840 dbgtext( "open_socket_in(): socket() call failed: " );
841 dbgtext( "%s\n", strerror( errno
) );
846 /* This block sets/clears the SO_REUSEADDR and possibly SO_REUSEPORT. */
848 int val
= rebind
? 1 : 0;
849 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEADDR
,
850 (char *)&val
,sizeof(val
)) == -1 ) {
851 if( DEBUGLVL( dlevel
) ) {
852 dbgtext( "open_socket_in(): setsockopt: " );
853 dbgtext( "SO_REUSEADDR = %s ",
854 val
?"true":"false" );
855 dbgtext( "on port %d failed ", port
);
856 dbgtext( "with error = %s\n", strerror(errno
) );
860 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEPORT
,
861 (char *)&val
,sizeof(val
)) == -1 ) {
862 if( DEBUGLVL( dlevel
) ) {
863 dbgtext( "open_socket_in(): setsockopt: ");
864 dbgtext( "SO_REUSEPORT = %s ",
866 dbgtext( "on port %d failed ", port
);
867 dbgtext( "with error = %s\n", strerror(errno
));
870 #endif /* SO_REUSEPORT */
873 /* now we've got a socket - we need to bind it */
874 if (bind(res
, (struct sockaddr
*)&sock
, slen
) == -1 ) {
875 if( DEBUGLVL(dlevel
) && (port
== SMB_PORT1
||
876 port
== SMB_PORT2
|| port
== NMB_PORT
) ) {
877 char addr
[INET6_ADDRSTRLEN
];
878 print_sockaddr(addr
, sizeof(addr
),
880 dbgtext( "bind failed on port %d ", port
);
881 dbgtext( "socket_addr = %s.\n", addr
);
882 dbgtext( "Error = %s\n", strerror(errno
));
888 DEBUG( 10, ( "bind succeeded on port %d\n", port
) );
892 struct open_socket_out_state
{
894 struct event_context
*ev
;
895 struct sockaddr_storage ss
;
901 static void open_socket_out_connected(struct tevent_req
*subreq
);
903 static int open_socket_out_state_destructor(struct open_socket_out_state
*s
)
911 /****************************************************************************
912 Create an outgoing socket. timeout is in milliseconds.
913 **************************************************************************/
915 struct tevent_req
*open_socket_out_send(TALLOC_CTX
*mem_ctx
,
916 struct event_context
*ev
,
917 const struct sockaddr_storage
*pss
,
921 char addr
[INET6_ADDRSTRLEN
];
922 struct tevent_req
*result
, *subreq
;
923 struct open_socket_out_state
*state
;
926 result
= tevent_req_create(mem_ctx
, &state
,
927 struct open_socket_out_state
);
928 if (result
== NULL
) {
934 state
->wait_nsec
= 10000;
937 state
->fd
= socket(state
->ss
.ss_family
, SOCK_STREAM
, 0);
938 if (state
->fd
== -1) {
939 status
= map_nt_error_from_unix(errno
);
942 talloc_set_destructor(state
, open_socket_out_state_destructor
);
944 if (!tevent_req_set_endtime(
945 result
, ev
, timeval_current_ofs(0, timeout
*1000))) {
949 #if defined(HAVE_IPV6)
950 if (pss
->ss_family
== AF_INET6
) {
951 struct sockaddr_in6
*psa6
;
952 psa6
= (struct sockaddr_in6
*)&state
->ss
;
953 psa6
->sin6_port
= htons(port
);
954 if (psa6
->sin6_scope_id
== 0
955 && IN6_IS_ADDR_LINKLOCAL(&psa6
->sin6_addr
)) {
956 setup_linklocal_scope_id(
957 (struct sockaddr
*)&(state
->ss
));
959 state
->salen
= sizeof(struct sockaddr_in6
);
962 if (pss
->ss_family
== AF_INET
) {
963 struct sockaddr_in
*psa
;
964 psa
= (struct sockaddr_in
*)&state
->ss
;
965 psa
->sin_port
= htons(port
);
966 state
->salen
= sizeof(struct sockaddr_in
);
969 if (pss
->ss_family
== AF_UNIX
) {
970 state
->salen
= sizeof(struct sockaddr_un
);
973 print_sockaddr(addr
, sizeof(addr
), &state
->ss
);
974 DEBUG(3,("Connecting to %s at port %u\n", addr
, (unsigned int)port
));
976 subreq
= async_connect_send(state
, state
->ev
, state
->fd
,
977 (struct sockaddr
*)&state
->ss
,
980 || !tevent_req_set_endtime(
982 timeval_current_ofs(0, state
->wait_nsec
))) {
985 tevent_req_set_callback(subreq
, open_socket_out_connected
, result
);
989 tevent_req_nterror(result
, status
);
990 return tevent_req_post(result
, ev
);
996 static void open_socket_out_connected(struct tevent_req
*subreq
)
998 struct tevent_req
*req
=
999 tevent_req_callback_data(subreq
, struct tevent_req
);
1000 struct open_socket_out_state
*state
=
1001 tevent_req_data(req
, struct open_socket_out_state
);
1005 ret
= async_connect_recv(subreq
, &sys_errno
);
1006 TALLOC_FREE(subreq
);
1008 tevent_req_done(req
);
1014 (sys_errno
== ETIMEDOUT
) ||
1016 (sys_errno
== EINPROGRESS
) ||
1017 (sys_errno
== EALREADY
) ||
1018 (sys_errno
== EAGAIN
)) {
1024 if (state
->wait_nsec
< 250000) {
1025 state
->wait_nsec
*= 1.5;
1028 subreq
= async_connect_send(state
, state
->ev
, state
->fd
,
1029 (struct sockaddr
*)&state
->ss
,
1031 if (tevent_req_nomem(subreq
, req
)) {
1034 if (!tevent_req_set_endtime(
1036 timeval_current_ofs(0, state
->wait_nsec
))) {
1037 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1040 tevent_req_set_callback(subreq
, open_socket_out_connected
, req
);
1045 if (sys_errno
== EISCONN
) {
1046 tevent_req_done(req
);
1052 tevent_req_nterror(req
, map_nt_error_from_unix(sys_errno
));
1055 NTSTATUS
open_socket_out_recv(struct tevent_req
*req
, int *pfd
)
1057 struct open_socket_out_state
*state
=
1058 tevent_req_data(req
, struct open_socket_out_state
);
1061 if (tevent_req_is_nterror(req
, &status
)) {
1066 return NT_STATUS_OK
;
1069 NTSTATUS
open_socket_out(const struct sockaddr_storage
*pss
, uint16_t port
,
1070 int timeout
, int *pfd
)
1072 TALLOC_CTX
*frame
= talloc_stackframe();
1073 struct event_context
*ev
;
1074 struct tevent_req
*req
;
1075 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
1077 ev
= event_context_init(frame
);
1082 req
= open_socket_out_send(frame
, ev
, pss
, port
, timeout
);
1086 if (!tevent_req_poll(req
, ev
)) {
1087 status
= NT_STATUS_INTERNAL_ERROR
;
1090 status
= open_socket_out_recv(req
, pfd
);
1096 struct open_socket_out_defer_state
{
1097 struct event_context
*ev
;
1098 struct sockaddr_storage ss
;
1104 static void open_socket_out_defer_waited(struct tevent_req
*subreq
);
1105 static void open_socket_out_defer_connected(struct tevent_req
*subreq
);
1107 struct tevent_req
*open_socket_out_defer_send(TALLOC_CTX
*mem_ctx
,
1108 struct event_context
*ev
,
1109 struct timeval wait_time
,
1110 const struct sockaddr_storage
*pss
,
1114 struct tevent_req
*req
, *subreq
;
1115 struct open_socket_out_defer_state
*state
;
1117 req
= tevent_req_create(mem_ctx
, &state
,
1118 struct open_socket_out_defer_state
);
1125 state
->timeout
= timeout
;
1127 subreq
= tevent_wakeup_send(
1129 timeval_current_ofs(wait_time
.tv_sec
, wait_time
.tv_usec
));
1130 if (subreq
== NULL
) {
1133 tevent_req_set_callback(subreq
, open_socket_out_defer_waited
, req
);
1140 static void open_socket_out_defer_waited(struct tevent_req
*subreq
)
1142 struct tevent_req
*req
= tevent_req_callback_data(
1143 subreq
, struct tevent_req
);
1144 struct open_socket_out_defer_state
*state
= tevent_req_data(
1145 req
, struct open_socket_out_defer_state
);
1148 ret
= tevent_wakeup_recv(subreq
);
1149 TALLOC_FREE(subreq
);
1151 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
1155 subreq
= open_socket_out_send(state
, state
->ev
, &state
->ss
,
1156 state
->port
, state
->timeout
);
1157 if (tevent_req_nomem(subreq
, req
)) {
1160 tevent_req_set_callback(subreq
, open_socket_out_defer_connected
, req
);
1163 static void open_socket_out_defer_connected(struct tevent_req
*subreq
)
1165 struct tevent_req
*req
= tevent_req_callback_data(
1166 subreq
, struct tevent_req
);
1167 struct open_socket_out_defer_state
*state
= tevent_req_data(
1168 req
, struct open_socket_out_defer_state
);
1171 status
= open_socket_out_recv(subreq
, &state
->fd
);
1172 TALLOC_FREE(subreq
);
1173 if (!NT_STATUS_IS_OK(status
)) {
1174 tevent_req_nterror(req
, status
);
1177 tevent_req_done(req
);
1180 NTSTATUS
open_socket_out_defer_recv(struct tevent_req
*req
, int *pfd
)
1182 struct open_socket_out_defer_state
*state
= tevent_req_data(
1183 req
, struct open_socket_out_defer_state
);
1186 if (tevent_req_is_nterror(req
, &status
)) {
1191 return NT_STATUS_OK
;
1194 /*******************************************************************
1195 Create an outgoing TCP socket to the first addr that connects.
1197 This is for simultaneous connection attempts to port 445 and 139 of a host
1198 or for simultatneous connection attempts to multiple DCs at once. We return
1199 a socket fd of the first successful connection.
1201 @param[in] addrs list of Internet addresses and ports to connect to
1202 @param[in] num_addrs number of address/port pairs in the addrs list
1203 @param[in] timeout time after which we stop waiting for a socket connection
1204 to succeed, given in milliseconds
1205 @param[out] fd_index the entry in addrs which we successfully connected to
1206 @param[out] fd fd of the open and connected socket
1207 @return true on a successful connection, false if all connection attempts
1208 failed or we timed out
1209 *******************************************************************/
1211 bool open_any_socket_out(struct sockaddr_storage
*addrs
, int num_addrs
,
1212 int timeout
, int *fd_index
, int *fd
)
1214 int i
, resulting_index
, res
;
1218 fd_set r_fds
, wr_fds
;
1222 int connect_loop
= 10000; /* 10 milliseconds */
1224 timeout
*= 1000; /* convert to microseconds */
1226 sockets
= SMB_MALLOC_ARRAY(int, num_addrs
);
1228 if (sockets
== NULL
)
1231 resulting_index
= -1;
1233 for (i
=0; i
<num_addrs
; i
++)
1236 for (i
=0; i
<num_addrs
; i
++) {
1237 sockets
[i
] = socket(addrs
[i
].ss_family
, SOCK_STREAM
, 0);
1240 set_blocking(sockets
[i
], false);
1244 good_connect
= false;
1246 for (i
=0; i
<num_addrs
; i
++) {
1247 const struct sockaddr
* a
=
1248 (const struct sockaddr
*)&(addrs
[i
]);
1250 if (sockets
[i
] == -1)
1253 if (sys_connect(sockets
[i
], a
) == 0) {
1254 /* Rather unlikely as we are non-blocking, but it
1255 * might actually happen. */
1256 resulting_index
= i
;
1260 if (errno
== EINPROGRESS
|| errno
== EALREADY
||
1264 errno
== EAGAIN
|| errno
== EINTR
) {
1265 /* These are the error messages that something is
1267 good_connect
= true;
1268 } else if (errno
!= 0) {
1269 /* There was a direct error */
1275 if (!good_connect
) {
1276 /* All of the connect's resulted in real error conditions */
1280 /* Lets see if any of the connect attempts succeeded */
1286 for (i
=0; i
<num_addrs
; i
++) {
1287 if (sockets
[i
] == -1)
1289 FD_SET(sockets
[i
], &wr_fds
);
1290 FD_SET(sockets
[i
], &r_fds
);
1291 if (sockets
[i
]>maxfd
)
1296 tv
.tv_usec
= connect_loop
;
1298 res
= sys_select_intr(maxfd
+1, &r_fds
, &wr_fds
, NULL
, &tv
);
1306 for (i
=0; i
<num_addrs
; i
++) {
1308 if (sockets
[i
] == -1)
1311 /* Stevens, Network Programming says that if there's a
1312 * successful connect, the socket is only writable. Upon an
1313 * error, it's both readable and writable. */
1315 if (FD_ISSET(sockets
[i
], &r_fds
) &&
1316 FD_ISSET(sockets
[i
], &wr_fds
)) {
1317 /* readable and writable, so it's an error */
1323 if (!FD_ISSET(sockets
[i
], &r_fds
) &&
1324 FD_ISSET(sockets
[i
], &wr_fds
)) {
1325 /* Only writable, so it's connected */
1326 resulting_index
= i
;
1333 timeout
-= connect_loop
;
1336 connect_loop
*= 1.5;
1337 if (connect_loop
> timeout
)
1338 connect_loop
= timeout
;
1342 for (i
=0; i
<num_addrs
; i
++) {
1343 if (i
== resulting_index
)
1345 if (sockets
[i
] >= 0)
1349 if (resulting_index
>= 0) {
1350 *fd_index
= resulting_index
;
1351 *fd
= sockets
[*fd_index
];
1352 set_blocking(*fd
, true);
1357 return (resulting_index
>= 0);
1359 /****************************************************************************
1360 Open a connected UDP socket to host on port
1361 **************************************************************************/
1363 int open_udp_socket(const char *host
, int port
)
1365 struct sockaddr_storage ss
;
1368 if (!interpret_string_addr(&ss
, host
, 0)) {
1369 DEBUG(10,("open_udp_socket: can't resolve name %s\n",
1374 res
= socket(ss
.ss_family
, SOCK_DGRAM
, 0);
1379 #if defined(HAVE_IPV6)
1380 if (ss
.ss_family
== AF_INET6
) {
1381 struct sockaddr_in6
*psa6
;
1382 psa6
= (struct sockaddr_in6
*)&ss
;
1383 psa6
->sin6_port
= htons(port
);
1384 if (psa6
->sin6_scope_id
== 0
1385 && IN6_IS_ADDR_LINKLOCAL(&psa6
->sin6_addr
)) {
1386 setup_linklocal_scope_id(
1387 (struct sockaddr
*)&ss
);
1391 if (ss
.ss_family
== AF_INET
) {
1392 struct sockaddr_in
*psa
;
1393 psa
= (struct sockaddr_in
*)&ss
;
1394 psa
->sin_port
= htons(port
);
1397 if (sys_connect(res
,(struct sockaddr
*)&ss
)) {
1405 /*******************************************************************
1406 Return the IP addr of the remote end of a socket as a string.
1407 Optionally return the struct sockaddr_storage.
1408 ******************************************************************/
1410 static const char *get_peer_addr_internal(int fd
,
1412 size_t addr_buf_len
,
1413 struct sockaddr
*pss
,
1416 struct sockaddr_storage ss
;
1417 socklen_t length
= sizeof(ss
);
1419 strlcpy(addr_buf
,"0.0.0.0",addr_buf_len
);
1426 pss
= (struct sockaddr
*)&ss
;
1430 if (getpeername(fd
, (struct sockaddr
*)pss
, plength
) < 0) {
1431 DEBUG(0,("getpeername failed. Error was %s\n",
1436 print_sockaddr_len(addr_buf
,
1443 /*******************************************************************
1444 Matchname - determine if host name matches IP address. Used to
1445 confirm a hostname lookup to prevent spoof attacks.
1446 ******************************************************************/
1448 static bool matchname(const char *remotehost
,
1449 const struct sockaddr
*pss
,
1452 struct addrinfo
*res
= NULL
;
1453 struct addrinfo
*ailist
= NULL
;
1454 char addr_buf
[INET6_ADDRSTRLEN
];
1455 bool ret
= interpret_string_addr_internal(&ailist
,
1457 AI_ADDRCONFIG
|AI_CANONNAME
);
1459 if (!ret
|| ailist
== NULL
) {
1460 DEBUG(3,("matchname: getaddrinfo failed for "
1463 gai_strerror(ret
) ));
1468 * Make sure that getaddrinfo() returns the "correct" host name.
1471 if (ailist
->ai_canonname
== NULL
||
1472 (!strequal(remotehost
, ailist
->ai_canonname
) &&
1473 !strequal(remotehost
, "localhost"))) {
1474 DEBUG(0,("matchname: host name/name mismatch: %s != %s\n",
1476 ailist
->ai_canonname
?
1477 ailist
->ai_canonname
: "(NULL)"));
1478 freeaddrinfo(ailist
);
1482 /* Look up the host address in the address list we just got. */
1483 for (res
= ailist
; res
; res
= res
->ai_next
) {
1484 if (!res
->ai_addr
) {
1487 if (sockaddr_equal((const struct sockaddr
*)res
->ai_addr
,
1488 (struct sockaddr
*)pss
)) {
1489 freeaddrinfo(ailist
);
1495 * The host name does not map to the original host address. Perhaps
1496 * someone has compromised a name server. More likely someone botched
1497 * it, but that could be dangerous, too.
1500 DEBUG(0,("matchname: host name/address mismatch: %s != %s\n",
1501 print_sockaddr_len(addr_buf
,
1505 ailist
->ai_canonname
? ailist
->ai_canonname
: "(NULL)"));
1508 freeaddrinfo(ailist
);
1513 /*******************************************************************
1514 Deal with the singleton cache.
1515 ******************************************************************/
1517 struct name_addr_pair
{
1518 struct sockaddr_storage ss
;
1522 /*******************************************************************
1523 Lookup a name/addr pair. Returns memory allocated from memcache.
1524 ******************************************************************/
1526 static bool lookup_nc(struct name_addr_pair
*nc
)
1532 if (!memcache_lookup(
1533 NULL
, SINGLETON_CACHE
,
1534 data_blob_string_const_null("get_peer_name"),
1539 memcpy(&nc
->ss
, tmp
.data
, sizeof(nc
->ss
));
1540 nc
->name
= (const char *)tmp
.data
+ sizeof(nc
->ss
);
1544 /*******************************************************************
1545 Save a name/addr pair.
1546 ******************************************************************/
1548 static void store_nc(const struct name_addr_pair
*nc
)
1551 size_t namelen
= strlen(nc
->name
);
1553 tmp
= data_blob(NULL
, sizeof(nc
->ss
) + namelen
+ 1);
1557 memcpy(tmp
.data
, &nc
->ss
, sizeof(nc
->ss
));
1558 memcpy(tmp
.data
+sizeof(nc
->ss
), nc
->name
, namelen
+1);
1560 memcache_add(NULL
, SINGLETON_CACHE
,
1561 data_blob_string_const_null("get_peer_name"),
1563 data_blob_free(&tmp
);
1566 /*******************************************************************
1567 Return the DNS name of the remote end of a socket.
1568 ******************************************************************/
1570 const char *get_peer_name(int fd
, bool force_lookup
)
1572 struct name_addr_pair nc
;
1573 char addr_buf
[INET6_ADDRSTRLEN
];
1574 struct sockaddr_storage ss
;
1575 socklen_t length
= sizeof(ss
);
1578 char name_buf
[MAX_DNS_NAME_LENGTH
];
1579 char tmp_name
[MAX_DNS_NAME_LENGTH
];
1581 /* reverse lookups can be *very* expensive, and in many
1582 situations won't work because many networks don't link dhcp
1583 with dns. To avoid the delay we avoid the lookup if
1585 if (!lp_hostname_lookups() && (force_lookup
== false)) {
1586 length
= sizeof(nc
.ss
);
1587 nc
.name
= get_peer_addr_internal(fd
, addr_buf
, sizeof(addr_buf
),
1588 (struct sockaddr
*)&nc
.ss
, &length
);
1591 return nc
.name
? nc
.name
: "UNKNOWN";
1596 memset(&ss
, '\0', sizeof(ss
));
1597 p
= get_peer_addr_internal(fd
, addr_buf
, sizeof(addr_buf
), (struct sockaddr
*)&ss
, &length
);
1599 /* it might be the same as the last one - save some DNS work */
1600 if (sockaddr_equal((struct sockaddr
*)&ss
, (struct sockaddr
*)&nc
.ss
)) {
1601 return nc
.name
? nc
.name
: "UNKNOWN";
1604 /* Not the same. We need to lookup. */
1609 /* Look up the remote host name. */
1610 ret
= sys_getnameinfo((struct sockaddr
*)&ss
,
1619 DEBUG(1,("get_peer_name: getnameinfo failed "
1620 "for %s with error %s\n",
1622 gai_strerror(ret
)));
1623 strlcpy(name_buf
, p
, sizeof(name_buf
));
1625 if (!matchname(name_buf
, (struct sockaddr
*)&ss
, length
)) {
1626 DEBUG(0,("Matchname failed on %s %s\n",name_buf
,p
));
1627 strlcpy(name_buf
,"UNKNOWN",sizeof(name_buf
));
1631 /* can't pass the same source and dest strings in when you
1632 use --enable-developer or the clobber_region() call will
1635 strlcpy(tmp_name
, name_buf
, sizeof(tmp_name
));
1636 alpha_strcpy(name_buf
, tmp_name
, "_-.", sizeof(name_buf
));
1637 if (strstr(name_buf
,"..")) {
1638 strlcpy(name_buf
, "UNKNOWN", sizeof(name_buf
));
1646 return nc
.name
? nc
.name
: "UNKNOWN";
1649 /*******************************************************************
1650 Return the IP addr of the remote end of a socket as a string.
1651 ******************************************************************/
1653 const char *get_peer_addr(int fd
, char *addr
, size_t addr_len
)
1655 return get_peer_addr_internal(fd
, addr
, addr_len
, NULL
, NULL
);
1658 /*******************************************************************
1659 Create protected unix domain socket.
1661 Some unixes cannot set permissions on a ux-dom-sock, so we
1662 have to make sure that the directory contains the protection
1663 permissions instead.
1664 ******************************************************************/
1666 int create_pipe_sock(const char *socket_dir
,
1667 const char *socket_name
,
1670 #ifdef HAVE_UNIXSOCKET
1671 struct sockaddr_un sunaddr
;
1677 old_umask
= umask(0);
1679 /* Create the socket directory or reuse the existing one */
1681 if (lstat(socket_dir
, &st
) == -1) {
1682 if (errno
== ENOENT
) {
1683 /* Create directory */
1684 if (mkdir(socket_dir
, dir_perms
) == -1) {
1685 DEBUG(0, ("error creating socket directory "
1686 "%s: %s\n", socket_dir
,
1691 DEBUG(0, ("lstat failed on socket directory %s: %s\n",
1692 socket_dir
, strerror(errno
)));
1696 /* Check ownership and permission on existing directory */
1697 if (!S_ISDIR(st
.st_mode
)) {
1698 DEBUG(0, ("socket directory %s isn't a directory\n",
1702 if ((st
.st_uid
!= sec_initial_uid()) ||
1703 ((st
.st_mode
& 0777) != dir_perms
)) {
1704 DEBUG(0, ("invalid permissions on socket directory "
1705 "%s\n", socket_dir
));
1710 /* Create the socket file */
1712 sock
= socket(AF_UNIX
, SOCK_STREAM
, 0);
1715 DEBUG(0, ("create_pipe_sock: socket error %s\n",
1720 if (asprintf(&path
, "%s/%s", socket_dir
, socket_name
) == -1) {
1725 memset(&sunaddr
, 0, sizeof(sunaddr
));
1726 sunaddr
.sun_family
= AF_UNIX
;
1727 strlcpy(sunaddr
.sun_path
, path
, sizeof(sunaddr
.sun_path
));
1729 if (bind(sock
, (struct sockaddr
*)&sunaddr
, sizeof(sunaddr
)) == -1) {
1730 DEBUG(0, ("bind failed on pipe socket %s: %s\n", path
,
1735 if (listen(sock
, 5) == -1) {
1736 DEBUG(0, ("listen failed on pipe socket %s: %s\n", path
,
1756 DEBUG(0, ("create_pipe_sock: No Unix sockets on this system\n"));
1758 #endif /* HAVE_UNIXSOCKET */
1761 /****************************************************************************
1762 Get my own canonical name, including domain.
1763 ****************************************************************************/
1765 const char *get_mydnsfullname(void)
1767 struct addrinfo
*res
= NULL
;
1768 char my_hostname
[HOST_NAME_MAX
];
1772 if (memcache_lookup(NULL
, SINGLETON_CACHE
,
1773 data_blob_string_const_null("get_mydnsfullname"),
1775 SMB_ASSERT(tmp
.length
> 0);
1776 return (const char *)tmp
.data
;
1779 /* get my host name */
1780 if (gethostname(my_hostname
, sizeof(my_hostname
)) == -1) {
1781 DEBUG(0,("get_mydnsfullname: gethostname failed\n"));
1785 /* Ensure null termination. */
1786 my_hostname
[sizeof(my_hostname
)-1] = '\0';
1788 ret
= interpret_string_addr_internal(&res
,
1790 AI_ADDRCONFIG
|AI_CANONNAME
);
1792 if (!ret
|| res
== NULL
) {
1793 DEBUG(3,("get_mydnsfullname: getaddrinfo failed for "
1796 gai_strerror(ret
) ));
1801 * Make sure that getaddrinfo() returns the "correct" host name.
1804 if (res
->ai_canonname
== NULL
) {
1805 DEBUG(3,("get_mydnsfullname: failed to get "
1806 "canonical name for %s\n",
1812 /* This copies the data, so we must do a lookup
1813 * afterwards to find the value to return.
1816 memcache_add(NULL
, SINGLETON_CACHE
,
1817 data_blob_string_const_null("get_mydnsfullname"),
1818 data_blob_string_const_null(res
->ai_canonname
));
1820 if (!memcache_lookup(NULL
, SINGLETON_CACHE
,
1821 data_blob_string_const_null("get_mydnsfullname"),
1823 tmp
= data_blob_talloc(talloc_tos(), res
->ai_canonname
,
1824 strlen(res
->ai_canonname
) + 1);
1829 return (const char *)tmp
.data
;
1832 /************************************************************
1834 ************************************************************/
1836 bool is_myname_or_ipaddr(const char *s
)
1838 TALLOC_CTX
*ctx
= talloc_tos();
1839 char addr
[INET6_ADDRSTRLEN
];
1841 const char *dnsname
;
1842 char *servername
= NULL
;
1848 /* Santize the string from '\\name' */
1849 name
= talloc_strdup(ctx
, s
);
1854 servername
= strrchr_m(name
, '\\' );
1861 /* Optimize for the common case */
1862 if (strequal(servername
, global_myname())) {
1866 /* Check for an alias */
1867 if (is_myname(servername
)) {
1871 /* Check for loopback */
1872 if (strequal(servername
, "127.0.0.1") ||
1873 strequal(servername
, "::1")) {
1877 if (strequal(servername
, "localhost")) {
1881 /* Maybe it's my dns name */
1882 dnsname
= get_mydnsfullname();
1883 if (dnsname
&& strequal(servername
, dnsname
)) {
1887 /* Handle possible CNAME records - convert to an IP addr. */
1888 if (!is_ipaddress(servername
)) {
1889 /* Use DNS to resolve the name, but only the first address */
1890 struct sockaddr_storage ss
;
1891 if (interpret_string_addr(&ss
, servername
, 0)) {
1892 print_sockaddr(addr
,
1899 /* Maybe its an IP address? */
1900 if (is_ipaddress(servername
)) {
1901 struct sockaddr_storage ss
;
1902 struct iface_struct
*nics
;
1905 if (!interpret_string_addr(&ss
, servername
, AI_NUMERICHOST
)) {
1909 if (ismyaddr((struct sockaddr
*)&ss
)) {
1913 if (is_zero_addr((struct sockaddr
*)&ss
) ||
1914 is_loopback_addr((struct sockaddr
*)&ss
)) {
1918 n
= get_interfaces(talloc_tos(), &nics
);
1919 for (i
=0; i
<n
; i
++) {
1920 if (sockaddr_equal((struct sockaddr
*)&nics
[i
].ip
, (struct sockaddr
*)&ss
)) {
1932 struct getaddrinfo_state
{
1934 const char *service
;
1935 const struct addrinfo
*hints
;
1936 struct addrinfo
*res
;
1940 static void getaddrinfo_do(void *private_data
);
1941 static void getaddrinfo_done(struct tevent_req
*subreq
);
1943 struct tevent_req
*getaddrinfo_send(TALLOC_CTX
*mem_ctx
,
1944 struct tevent_context
*ev
,
1945 struct fncall_context
*ctx
,
1947 const char *service
,
1948 const struct addrinfo
*hints
)
1950 struct tevent_req
*req
, *subreq
;
1951 struct getaddrinfo_state
*state
;
1953 req
= tevent_req_create(mem_ctx
, &state
, struct getaddrinfo_state
);
1959 state
->service
= service
;
1960 state
->hints
= hints
;
1962 subreq
= fncall_send(state
, ev
, ctx
, getaddrinfo_do
, state
);
1963 if (tevent_req_nomem(subreq
, req
)) {
1964 return tevent_req_post(req
, ev
);
1966 tevent_req_set_callback(subreq
, getaddrinfo_done
, req
);
1970 static void getaddrinfo_do(void *private_data
)
1972 struct getaddrinfo_state
*state
=
1973 (struct getaddrinfo_state
*)private_data
;
1975 state
->ret
= getaddrinfo(state
->node
, state
->service
, state
->hints
,
1979 static void getaddrinfo_done(struct tevent_req
*subreq
)
1981 struct tevent_req
*req
= tevent_req_callback_data(
1982 subreq
, struct tevent_req
);
1985 ret
= fncall_recv(subreq
, &err
);
1986 TALLOC_FREE(subreq
);
1988 tevent_req_error(req
, err
);
1991 tevent_req_done(req
);
1994 int getaddrinfo_recv(struct tevent_req
*req
, struct addrinfo
**res
)
1996 struct getaddrinfo_state
*state
= tevent_req_data(
1997 req
, struct getaddrinfo_state
);
2000 if (tevent_req_is_unix_error(req
, &err
)) {
2008 if (state
->ret
== 0) {