2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Tim Potter 2000-2001
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 /* the last IP received from */
25 struct in_addr lastip
;
27 /* the last port received from */
30 int smb_read_error
= 0;
32 static char *get_socket_addr(int fd
)
35 struct sockaddr_in
*sockin
= (struct sockaddr_in
*) (&sa
);
36 socklen_t length
= sizeof(sa
);
37 static fstring addr_buf
;
39 fstrcpy(addr_buf
,"0.0.0.0");
45 if (getsockname(fd
, &sa
, &length
) < 0) {
46 DEBUG(0,("getsockname failed. Error was %s\n", strerror(errno
) ));
50 fstrcpy(addr_buf
,(char *)inet_ntoa(sockin
->sin_addr
));
55 static int get_socket_port(int fd
)
58 struct sockaddr_in
*sockin
= (struct sockaddr_in
*) (&sa
);
59 socklen_t length
= sizeof(sa
);
64 if (getsockname(fd
, &sa
, &length
) < 0) {
65 DEBUG(0,("getpeername failed. Error was %s\n", strerror(errno
) ));
69 return ntohs(sockin
->sin_port
);
72 /****************************************************************************
73 Determine if a file descriptor is in fact a socket.
74 ****************************************************************************/
76 BOOL
is_a_socket(int fd
)
81 return(getsockopt(fd
, SOL_SOCKET
, SO_TYPE
, (char *)&v
, &l
) == 0);
84 enum SOCK_OPT_TYPES
{OPT_BOOL
,OPT_INT
,OPT_ON
};
86 typedef struct smb_socket_option
{
94 static const smb_socket_option socket_options
[] = {
95 {"SO_KEEPALIVE", SOL_SOCKET
, SO_KEEPALIVE
, 0, OPT_BOOL
},
96 {"SO_REUSEADDR", SOL_SOCKET
, SO_REUSEADDR
, 0, OPT_BOOL
},
97 {"SO_BROADCAST", SOL_SOCKET
, SO_BROADCAST
, 0, OPT_BOOL
},
99 {"TCP_NODELAY", IPPROTO_TCP
, TCP_NODELAY
, 0, OPT_BOOL
},
101 #ifdef IPTOS_LOWDELAY
102 {"IPTOS_LOWDELAY", IPPROTO_IP
, IP_TOS
, IPTOS_LOWDELAY
, OPT_ON
},
104 #ifdef IPTOS_THROUGHPUT
105 {"IPTOS_THROUGHPUT", IPPROTO_IP
, IP_TOS
, IPTOS_THROUGHPUT
, OPT_ON
},
108 {"SO_REUSEPORT", SOL_SOCKET
, SO_REUSEPORT
, 0, OPT_BOOL
},
111 {"SO_SNDBUF", SOL_SOCKET
, SO_SNDBUF
, 0, OPT_INT
},
114 {"SO_RCVBUF", SOL_SOCKET
, SO_RCVBUF
, 0, OPT_INT
},
117 {"SO_SNDLOWAT", SOL_SOCKET
, SO_SNDLOWAT
, 0, OPT_INT
},
120 {"SO_RCVLOWAT", SOL_SOCKET
, SO_RCVLOWAT
, 0, OPT_INT
},
123 {"SO_SNDTIMEO", SOL_SOCKET
, SO_SNDTIMEO
, 0, OPT_INT
},
126 {"SO_RCVTIMEO", SOL_SOCKET
, SO_RCVTIMEO
, 0, OPT_INT
},
130 /****************************************************************************
131 Print socket options.
132 ****************************************************************************/
134 static void print_socket_options(int s
)
138 const smb_socket_option
*p
= &socket_options
[0];
140 /* wrapped in if statement to prevent streams leak in SCO Openserver 5.0 */
141 /* reported on samba-technical --jerry */
142 if ( DEBUGLEVEL
>= 5 ) {
143 for (; p
->name
!= NULL
; p
++) {
144 if (getsockopt(s
, p
->level
, p
->option
, (void *)&value
, &vlen
) == -1) {
145 DEBUG(5,("Could not test socket option %s.\n", p
->name
));
147 DEBUG(5,("socket option %s = %d\n",p
->name
,value
));
153 /****************************************************************************
154 Set user socket options.
155 ****************************************************************************/
157 void set_socket_options(int fd
, const char *options
)
161 while (next_token(&options
,tok
," \t,", sizeof(tok
))) {
165 BOOL got_value
= False
;
167 if ((p
= strchr_m(tok
,'='))) {
173 for (i
=0;socket_options
[i
].name
;i
++)
174 if (strequal(socket_options
[i
].name
,tok
))
177 if (!socket_options
[i
].name
) {
178 DEBUG(0,("Unknown socket option %s\n",tok
));
182 switch (socket_options
[i
].opttype
) {
185 ret
= setsockopt(fd
,socket_options
[i
].level
,
186 socket_options
[i
].option
,(char *)&value
,sizeof(int));
191 DEBUG(0,("syntax error - %s does not take a value\n",tok
));
194 int on
= socket_options
[i
].value
;
195 ret
= setsockopt(fd
,socket_options
[i
].level
,
196 socket_options
[i
].option
,(char *)&on
,sizeof(int));
202 DEBUG(0,("Failed to set socket option %s (Error %s)\n",tok
, strerror(errno
) ));
205 print_socket_options(fd
);
208 /****************************************************************************
210 ****************************************************************************/
212 ssize_t
read_udp_socket(int fd
,char *buf
,size_t len
)
215 struct sockaddr_in sock
;
216 socklen_t socklen
= sizeof(sock
);
218 memset((char *)&sock
,'\0',socklen
);
219 memset((char *)&lastip
,'\0',sizeof(lastip
));
220 ret
= (ssize_t
)sys_recvfrom(fd
,buf
,len
,0,(struct sockaddr
*)&sock
,&socklen
);
222 DEBUG(2,("read socket failed. ERRNO=%s\n",strerror(errno
)));
226 lastip
= sock
.sin_addr
;
227 lastport
= ntohs(sock
.sin_port
);
229 DEBUG(10,("read_udp_socket: lastip %s lastport %d read: %lu\n",
230 inet_ntoa(lastip
), lastport
, (unsigned long)ret
));
235 /****************************************************************************
236 Read data from a socket with a timout in msec.
237 mincount = if timeout, minimum to read before returning
238 maxcount = number to be read.
239 time_out = timeout in milliseconds
240 ****************************************************************************/
242 ssize_t
read_socket_with_timeout(int fd
,char *buf
,size_t mincnt
,size_t maxcnt
,unsigned int time_out
)
248 struct timeval timeout
;
250 /* just checking .... */
258 if (mincnt
== 0) mincnt
= maxcnt
;
260 while (nread
< mincnt
) {
261 readret
= sys_read(fd
, buf
+ nread
, maxcnt
- nread
);
264 DEBUG(5,("read_socket_with_timeout: blocking read. EOF from client.\n"));
265 smb_read_error
= READ_EOF
;
270 DEBUG(0,("read_socket_with_timeout: read error = %s.\n", strerror(errno
) ));
271 smb_read_error
= READ_ERROR
;
276 return((ssize_t
)nread
);
279 /* Most difficult - timeout read */
280 /* If this is ever called on a disk file and
281 mincnt is greater then the filesize then
282 system performance will suffer severely as
283 select always returns true on disk files */
285 /* Set initial timeout */
286 timeout
.tv_sec
= (time_t)(time_out
/ 1000);
287 timeout
.tv_usec
= (long)(1000 * (time_out
% 1000));
289 for (nread
=0; nread
< mincnt
; ) {
293 selrtn
= sys_select_intr(fd
+1,&fds
,NULL
,NULL
,&timeout
);
297 /* something is wrong. Maybe the socket is dead? */
298 DEBUG(0,("read_socket_with_timeout: timeout read. select error = %s.\n", strerror(errno
) ));
299 smb_read_error
= READ_ERROR
;
303 /* Did we timeout ? */
305 DEBUG(10,("read_socket_with_timeout: timeout read. select timed out.\n"));
306 smb_read_error
= READ_TIMEOUT
;
310 readret
= sys_read(fd
, buf
+nread
, maxcnt
-nread
);
313 /* we got EOF on the file descriptor */
314 DEBUG(5,("read_socket_with_timeout: timeout read. EOF from client.\n"));
315 smb_read_error
= READ_EOF
;
320 /* the descriptor is probably dead */
321 DEBUG(0,("read_socket_with_timeout: timeout read. read error = %s.\n", strerror(errno
) ));
322 smb_read_error
= READ_ERROR
;
329 /* Return the number we got */
330 return (ssize_t
)nread
;
333 /****************************************************************************
334 Read data from the client, reading exactly N bytes.
335 ****************************************************************************/
337 ssize_t
read_data(int fd
,char *buffer
,size_t N
)
345 ret
= sys_read(fd
,buffer
+ total
,N
- total
);
348 DEBUG(10,("read_data: read of %d returned 0. Error = %s\n", (int)(N
- total
), strerror(errno
) ));
349 smb_read_error
= READ_EOF
;
354 DEBUG(0,("read_data: read failure for %d. Error = %s\n", (int)(N
- total
), strerror(errno
) ));
355 smb_read_error
= READ_ERROR
;
360 return (ssize_t
)total
;
363 /****************************************************************************
364 Read data from a socket, reading exactly N bytes.
365 ****************************************************************************/
367 static ssize_t
read_socket_data(int fd
,char *buffer
,size_t N
)
375 ret
= sys_read(fd
,buffer
+ total
,N
- total
);
378 DEBUG(10,("read_socket_data: recv of %d returned 0. Error = %s\n", (int)(N
- total
), strerror(errno
) ));
379 smb_read_error
= READ_EOF
;
384 DEBUG(0,("read_socket_data: recv failure for %d. Error = %s\n", (int)(N
- total
), strerror(errno
) ));
385 smb_read_error
= READ_ERROR
;
390 return (ssize_t
)total
;
393 /****************************************************************************
395 ****************************************************************************/
397 ssize_t
write_data(int fd
,char *buffer
,size_t N
)
403 ret
= sys_write(fd
,buffer
+ total
,N
- total
);
406 DEBUG(0,("write_data: write failure. Error = %s\n", strerror(errno
) ));
414 return (ssize_t
)total
;
417 /****************************************************************************
418 Write data to a socket - use send rather than write.
419 ****************************************************************************/
421 static ssize_t
write_socket_data(int fd
,char *buffer
,size_t N
)
427 ret
= sys_send(fd
,buffer
+ total
,N
- total
,0);
430 DEBUG(0,("write_socket_data: write failure. Error = %s\n", strerror(errno
) ));
438 return (ssize_t
)total
;
441 /****************************************************************************
443 ****************************************************************************/
445 ssize_t
write_socket(int fd
,char *buf
,size_t len
)
449 DEBUG(6,("write_socket(%d,%d)\n",fd
,(int)len
));
450 ret
= write_socket_data(fd
,buf
,len
);
452 DEBUG(6,("write_socket(%d,%d) wrote %d\n",fd
,(int)len
,(int)ret
));
454 DEBUG(0,("write_socket: Error writing %d bytes to socket %d: ERRNO = %s\n",
455 (int)len
, fd
, strerror(errno
) ));
460 /****************************************************************************
461 Send a keepalive packet (rfc1002).
462 ****************************************************************************/
464 BOOL
send_keepalive(int client
)
466 unsigned char buf
[4];
468 buf
[0] = SMBkeepalive
;
469 buf
[1] = buf
[2] = buf
[3] = 0;
471 return(write_socket_data(client
,(char *)buf
,4) == 4);
475 /****************************************************************************
476 Read 4 bytes of a smb packet and return the smb length of the packet.
477 Store the result in the buffer.
478 This version of the function will return a length of zero on receiving
480 Timeout is in milliseconds.
481 ****************************************************************************/
483 static ssize_t
read_smb_length_return_keepalive(int fd
,char *inbuf
,unsigned int timeout
)
491 ok
= (read_socket_with_timeout(fd
,inbuf
,4,4,timeout
) == 4);
493 ok
= (read_socket_data(fd
,inbuf
,4) == 4);
498 len
= smb_len(inbuf
);
499 msg_type
= CVAL(inbuf
,0);
501 if (msg_type
== SMBkeepalive
)
502 DEBUG(5,("Got keepalive packet\n"));
505 DEBUG(10,("got smb length of %lu\n",(unsigned long)len
));
510 /****************************************************************************
511 Read 4 bytes of a smb packet and return the smb length of the packet.
512 Store the result in the buffer. This version of the function will
513 never return a session keepalive (length of zero).
514 Timeout is in milliseconds.
515 ****************************************************************************/
517 ssize_t
read_smb_length(int fd
,char *inbuf
,unsigned int timeout
)
522 len
= read_smb_length_return_keepalive(fd
, inbuf
, timeout
);
527 /* Ignore session keepalives. */
528 if(CVAL(inbuf
,0) != SMBkeepalive
)
532 DEBUG(10,("read_smb_length: got smb length of %lu\n",
533 (unsigned long)len
));
538 /****************************************************************************
539 Read an smb from a fd. Note that the buffer *MUST* be of size
540 BUFFER_SIZE+SAFETY_MARGIN.
541 The timeout is in milliseconds.
542 This function will return on receipt of a session keepalive packet.
543 Doesn't check the MAC on signed packets.
544 ****************************************************************************/
546 BOOL
receive_smb_raw(int fd
,char *buffer
, unsigned int timeout
)
552 memset(buffer
,'\0',smb_size
+ 100);
554 len
= read_smb_length_return_keepalive(fd
,buffer
,timeout
);
556 DEBUG(10,("receive_smb_raw: length < 0!\n"));
559 * Correct fix. smb_read_error may have already been
560 * set. Only set it here if not already set. Global
561 * variables still suck :-). JRA.
564 if (smb_read_error
== 0)
565 smb_read_error
= READ_ERROR
;
570 * A WRITEX with CAP_LARGE_WRITEX can be 64k worth of data plus 65 bytes
571 * of header. Don't print the error if this fits.... JRA.
574 if (len
> (BUFFER_SIZE
+ LARGE_WRITEX_HDR_SIZE
)) {
575 DEBUG(0,("Invalid packet length! (%lu bytes).\n",(unsigned long)len
));
576 if (len
> BUFFER_SIZE
+ (SAFETY_MARGIN
/2)) {
579 * Correct fix. smb_read_error may have already been
580 * set. Only set it here if not already set. Global
581 * variables still suck :-). JRA.
584 if (smb_read_error
== 0)
585 smb_read_error
= READ_ERROR
;
591 ret
= read_socket_data(fd
,buffer
+4,len
);
593 if (smb_read_error
== 0)
594 smb_read_error
= READ_ERROR
;
598 /* not all of samba3 properly checks for packet-termination of strings. This
599 ensures that we don't run off into empty space. */
600 SSVAL(buffer
+4,len
, 0);
606 /****************************************************************************
607 Wrapper for receive_smb_raw().
608 Checks the MAC on signed packets.
609 ****************************************************************************/
611 BOOL
receive_smb(int fd
,char *buffer
, unsigned int timeout
)
613 if (!receive_smb_raw(fd
, buffer
, timeout
)) {
617 /* Check the incoming SMB signature. */
618 if (!srv_check_sign_mac(buffer
, True
)) {
619 DEBUG(0, ("receive_smb: SMB Signature verification failed on incoming packet!\n"));
620 if (smb_read_error
== 0)
621 smb_read_error
= READ_BAD_SIG
;
628 /****************************************************************************
630 ****************************************************************************/
632 BOOL
send_smb(int fd
,char *buffer
)
638 /* Sign the outgoing packet if required. */
639 srv_calculate_sign_mac(buffer
);
641 len
= smb_len(buffer
) + 4;
643 while (nwritten
< len
) {
644 ret
= write_socket(fd
,buffer
+nwritten
,len
- nwritten
);
646 DEBUG(0,("Error writing %d bytes to client. %d. (%s)\n",
647 (int)len
,(int)ret
, strerror(errno
) ));
656 /****************************************************************************
657 Open a socket of the specified type, port, and address for incoming data.
658 ****************************************************************************/
660 int open_socket_in( int type
, int port
, int dlevel
, uint32 socket_addr
, BOOL rebind
)
662 struct sockaddr_in sock
;
665 memset( (char *)&sock
, '\0', sizeof(sock
) );
667 #ifdef HAVE_SOCK_SIN_LEN
668 sock
.sin_len
= sizeof(sock
);
670 sock
.sin_port
= htons( port
);
671 sock
.sin_family
= AF_INET
;
672 sock
.sin_addr
.s_addr
= socket_addr
;
674 res
= socket( AF_INET
, type
, 0 );
677 dbgtext( "open_socket_in(): socket() call failed: " );
678 dbgtext( "%s\n", strerror( errno
) );
683 /* This block sets/clears the SO_REUSEADDR and possibly SO_REUSEPORT. */
685 int val
= rebind
? 1 : 0;
686 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEADDR
,(char *)&val
,sizeof(val
)) == -1 ) {
687 if( DEBUGLVL( dlevel
) ) {
688 dbgtext( "open_socket_in(): setsockopt: " );
689 dbgtext( "SO_REUSEADDR = %s ", val
?"True":"False" );
690 dbgtext( "on port %d failed ", port
);
691 dbgtext( "with error = %s\n", strerror(errno
) );
695 if( setsockopt(res
,SOL_SOCKET
,SO_REUSEPORT
,(char *)&val
,sizeof(val
)) == -1 ) {
696 if( DEBUGLVL( dlevel
) ) {
697 dbgtext( "open_socket_in(): setsockopt: ");
698 dbgtext( "SO_REUSEPORT = %s ", val
?"True":"False" );
699 dbgtext( "on port %d failed ", port
);
700 dbgtext( "with error = %s\n", strerror(errno
) );
703 #endif /* SO_REUSEPORT */
706 /* now we've got a socket - we need to bind it */
707 if( bind( res
, (struct sockaddr
*)&sock
, sizeof(sock
) ) == -1 ) {
708 if( DEBUGLVL(dlevel
) && (port
== SMB_PORT1
|| port
== SMB_PORT2
|| port
== NMB_PORT
) ) {
709 dbgtext( "bind failed on port %d ", port
);
710 dbgtext( "socket_addr = %s.\n", inet_ntoa( sock
.sin_addr
) );
711 dbgtext( "Error = %s\n", strerror(errno
) );
717 DEBUG( 10, ( "bind succeeded on port %d\n", port
) );
722 /****************************************************************************
723 Create an outgoing socket. timeout is in milliseconds.
724 **************************************************************************/
726 int open_socket_out(int type
, struct in_addr
*addr
, int port
,int timeout
)
728 struct sockaddr_in sock_out
;
730 int connect_loop
= 10;
733 /* create a socket to write to */
734 res
= socket(PF_INET
, type
, 0);
736 DEBUG(0,("socket error (%s)\n", strerror(errno
)));
740 if (type
!= SOCK_STREAM
)
743 memset((char *)&sock_out
,'\0',sizeof(sock_out
));
744 putip((char *)&sock_out
.sin_addr
,(char *)addr
);
746 sock_out
.sin_port
= htons( port
);
747 sock_out
.sin_family
= PF_INET
;
749 /* set it non-blocking */
750 set_blocking(res
,False
);
752 DEBUG(3,("Connecting to %s at port %d\n",inet_ntoa(*addr
),port
));
754 /* and connect it to the destination */
757 ret
= connect(res
,(struct sockaddr
*)&sock_out
,sizeof(sock_out
));
759 /* Some systems return EAGAIN when they mean EINPROGRESS */
760 if (ret
< 0 && (errno
== EINPROGRESS
|| errno
== EALREADY
||
761 errno
== EAGAIN
) && (connect_loop
< timeout
) ) {
762 smb_msleep(connect_loop
);
763 timeout
-= connect_loop
;
764 connect_loop
+= increment
;
765 if (increment
< 250) {
766 /* After 8 rounds we end up at a max of 255 msec */
772 if (ret
< 0 && (errno
== EINPROGRESS
|| errno
== EALREADY
||
774 DEBUG(1,("timeout connecting to %s:%d\n",inet_ntoa(*addr
),port
));
781 if (ret
< 0 && errno
== EISCONN
) {
788 DEBUG(2,("error connecting to %s:%d (%s)\n",
789 inet_ntoa(*addr
),port
,strerror(errno
)));
794 /* set it blocking again */
795 set_blocking(res
,True
);
800 /****************************************************************************
801 Open a connected UDP socket to host on port
802 **************************************************************************/
804 int open_udp_socket(const char *host
, int port
)
806 int type
= SOCK_DGRAM
;
807 struct sockaddr_in sock_out
;
809 struct in_addr
*addr
;
811 addr
= interpret_addr2(host
);
813 res
= socket(PF_INET
, type
, 0);
818 memset((char *)&sock_out
,'\0',sizeof(sock_out
));
819 putip((char *)&sock_out
.sin_addr
,(char *)addr
);
820 sock_out
.sin_port
= htons(port
);
821 sock_out
.sin_family
= PF_INET
;
823 if (connect(res
,(struct sockaddr
*)&sock_out
,sizeof(sock_out
))) {
832 /* the following 3 client_*() functions are nasty ways of allowing
833 some generic functions to get info that really should be hidden in
834 particular modules */
835 static int client_fd
= -1;
837 void client_setfd(int fd
)
842 char *client_name(void)
844 return get_peer_name(client_fd
,False
);
847 char *client_addr(void)
849 return get_peer_addr(client_fd
);
852 char *client_socket_addr(void)
854 return get_socket_addr(client_fd
);
857 int client_socket_port(void)
859 return get_socket_port(client_fd
);
862 struct in_addr
*client_inaddr(struct sockaddr
*sa
)
864 struct sockaddr_in
*sockin
= (struct sockaddr_in
*) (sa
);
865 socklen_t length
= sizeof(*sa
);
867 if (getpeername(client_fd
, sa
, &length
) < 0) {
868 DEBUG(0,("getpeername failed. Error was %s\n", strerror(errno
) ));
872 return &sockin
->sin_addr
;
875 /*******************************************************************
876 Matchname - determine if host name matches IP address. Used to
877 confirm a hostname lookup to prevent spoof attacks.
878 ******************************************************************/
880 static BOOL
matchname(char *remotehost
,struct in_addr addr
)
885 if ((hp
= sys_gethostbyname(remotehost
)) == 0) {
886 DEBUG(0,("sys_gethostbyname(%s): lookup failure.\n", remotehost
));
891 * Make sure that gethostbyname() returns the "correct" host name.
892 * Unfortunately, gethostbyname("localhost") sometimes yields
893 * "localhost.domain". Since the latter host name comes from the
894 * local DNS, we just have to trust it (all bets are off if the local
895 * DNS is perverted). We always check the address list, though.
898 if (!strequal(remotehost
, hp
->h_name
)
899 && !strequal(remotehost
, "localhost")) {
900 DEBUG(0,("host name/name mismatch: %s != %s\n",
901 remotehost
, hp
->h_name
));
905 /* Look up the host address in the address list we just got. */
906 for (i
= 0; hp
->h_addr_list
[i
]; i
++) {
907 if (memcmp(hp
->h_addr_list
[i
], (char *) & addr
, sizeof(addr
)) == 0)
912 * The host name does not map to the original host address. Perhaps
913 * someone has compromised a name server. More likely someone botched
914 * it, but that could be dangerous, too.
917 DEBUG(0,("host name/address mismatch: %s != %s\n",
918 inet_ntoa(addr
), hp
->h_name
));
922 /*******************************************************************
923 Return the DNS name of the remote end of a socket.
924 ******************************************************************/
926 char *get_peer_name(int fd
, BOOL force_lookup
)
928 static pstring name_buf
;
930 static fstring addr_buf
;
935 /* reverse lookups can be *very* expensive, and in many
936 situations won't work because many networks don't link dhcp
937 with dns. To avoid the delay we avoid the lookup if
939 if (!lp_hostname_lookups() && (force_lookup
== False
)) {
940 return get_peer_addr(fd
);
943 p
= get_peer_addr(fd
);
945 /* it might be the same as the last one - save some DNS work */
946 if (strcmp(p
, addr_buf
) == 0)
949 pstrcpy(name_buf
,"UNKNOWN");
953 fstrcpy(addr_buf
, p
);
955 addr
= *interpret_addr2(p
);
957 /* Look up the remote host name. */
958 if ((hp
= gethostbyaddr((char *)&addr
.s_addr
, sizeof(addr
.s_addr
), AF_INET
)) == 0) {
959 DEBUG(1,("Gethostbyaddr failed for %s\n",p
));
960 pstrcpy(name_buf
, p
);
962 pstrcpy(name_buf
,(char *)hp
->h_name
);
963 if (!matchname(name_buf
, addr
)) {
964 DEBUG(0,("Matchname failed on %s %s\n",name_buf
,p
));
965 pstrcpy(name_buf
,"UNKNOWN");
969 /* can't pass the same source and dest strings in when you
970 use --enable-developer or the clobber_region() call will
973 pstrcpy( tmp_name
, name_buf
);
974 alpha_strcpy(name_buf
, tmp_name
, "_-.", sizeof(name_buf
));
975 if (strstr(name_buf
,"..")) {
976 pstrcpy(name_buf
, "UNKNOWN");
982 /*******************************************************************
983 Return the IP addr of the remote end of a socket as a string.
984 ******************************************************************/
986 char *get_peer_addr(int fd
)
989 struct sockaddr_in
*sockin
= (struct sockaddr_in
*) (&sa
);
990 socklen_t length
= sizeof(sa
);
991 static fstring addr_buf
;
993 fstrcpy(addr_buf
,"0.0.0.0");
999 if (getpeername(fd
, &sa
, &length
) < 0) {
1000 DEBUG(0,("getpeername failed. Error was %s\n", strerror(errno
) ));
1004 fstrcpy(addr_buf
,(char *)inet_ntoa(sockin
->sin_addr
));
1009 /*******************************************************************
1010 Create protected unix domain socket.
1012 Some unixes cannot set permissions on a ux-dom-sock, so we
1013 have to make sure that the directory contains the protection
1014 permissions instead.
1015 ******************************************************************/
1017 int create_pipe_sock(const char *socket_dir
,
1018 const char *socket_name
,
1021 #ifdef HAVE_UNIXSOCKET
1022 struct sockaddr_un sunaddr
;
1028 old_umask
= umask(0);
1030 /* Create the socket directory or reuse the existing one */
1032 if (lstat(socket_dir
, &st
) == -1) {
1033 if (errno
== ENOENT
) {
1034 /* Create directory */
1035 if (mkdir(socket_dir
, dir_perms
) == -1) {
1036 DEBUG(0, ("error creating socket directory "
1037 "%s: %s\n", socket_dir
,
1042 DEBUG(0, ("lstat failed on socket directory %s: %s\n",
1043 socket_dir
, strerror(errno
)));
1047 /* Check ownership and permission on existing directory */
1048 if (!S_ISDIR(st
.st_mode
)) {
1049 DEBUG(0, ("socket directory %s isn't a directory\n",
1053 if ((st
.st_uid
!= sec_initial_uid()) ||
1054 ((st
.st_mode
& 0777) != dir_perms
)) {
1055 DEBUG(0, ("invalid permissions on socket directory "
1056 "%s\n", socket_dir
));
1061 /* Create the socket file */
1063 sock
= socket(AF_UNIX
, SOCK_STREAM
, 0);
1070 pstr_sprintf(path
, "%s/%s", socket_dir
, socket_name
);
1073 memset(&sunaddr
, 0, sizeof(sunaddr
));
1074 sunaddr
.sun_family
= AF_UNIX
;
1075 safe_strcpy(sunaddr
.sun_path
, path
, sizeof(sunaddr
.sun_path
)-1);
1077 if (bind(sock
, (struct sockaddr
*)&sunaddr
, sizeof(sunaddr
)) == -1) {
1078 DEBUG(0, ("bind failed on pipe socket %s: %s\n", path
,
1083 if (listen(sock
, 5) == -1) {
1084 DEBUG(0, ("listen failed on pipe socket %s: %s\n", path
,
1100 DEBUG(0, ("create_pipe_sock: No Unix sockets on this system\n"));
1102 #endif /* HAVE_UNIXSOCKET */