| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 | a WINS nsswitch module
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| 4 | Copyright (C) Andrew Tridgell 1999
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| 5 |
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| 6 | This program is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2 of the License, or
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| 9 | (at your option) any later version.
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| 10 |
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| 11 | This program is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with this program; if not, write to the Free Software
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| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 |
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| 20 | */
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| 21 |
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| 22 | #include "includes.h"
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| 23 | #ifdef HAVE_NS_API_H
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| 24 | #undef VOLATILE
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| 25 |
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| 26 | #include <ns_daemon.h>
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| 27 | #endif
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| 28 |
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| 29 | #if HAVE_PTHREAD_H
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| 30 | #include <pthread.h>
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| 31 | #endif
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| 32 |
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| 33 | #if HAVE_PTHREAD
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| 34 | static pthread_mutex_t wins_nss_mutex = PTHREAD_MUTEX_INITIALIZER;
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| 35 | #endif
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| 36 |
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| 37 | #ifndef INADDRSZ
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| 38 | #define INADDRSZ 4
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| 39 | #endif
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| 40 |
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| 41 | static int initialised;
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| 42 |
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| 43 | extern BOOL AllowDebugChange;
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| 44 |
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| 45 | NSS_STATUS _nss_wins_gethostbyname_r(const char *hostname, struct hostent *he,
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| 46 | char *buffer, size_t buflen, int *h_errnop);
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| 47 | NSS_STATUS _nss_wins_gethostbyname2_r(const char *name, int af, struct hostent *he,
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| 48 | char *buffer, size_t buflen, int *h_errnop);
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| 49 |
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| 50 | /* Use our own create socket code so we don't recurse.... */
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| 51 |
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| 52 | static int wins_lookup_open_socket_in(void)
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| 53 | {
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| 54 | struct sockaddr_in sock;
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| 55 | int val=1;
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| 56 | int res;
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| 57 |
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| 58 | memset((char *)&sock,'\0',sizeof(sock));
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| 59 |
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| 60 | #ifdef HAVE_SOCK_SIN_LEN
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| 61 | sock.sin_len = sizeof(sock);
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| 62 | #endif
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| 63 | sock.sin_port = 0;
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| 64 | sock.sin_family = AF_INET;
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| 65 | sock.sin_addr.s_addr = interpret_addr("0.0.0.0");
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| 66 | res = socket(AF_INET, SOCK_DGRAM, 0);
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| 67 | if (res == -1)
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| 68 | return -1;
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| 69 |
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| 70 | setsockopt(res,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val));
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| 71 | #ifdef SO_REUSEPORT
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| 72 | setsockopt(res,SOL_SOCKET,SO_REUSEPORT,(char *)&val,sizeof(val));
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| 73 | #endif /* SO_REUSEPORT */
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| 74 |
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| 75 | /* now we've got a socket - we need to bind it */
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| 76 |
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| 77 | if (bind(res, (struct sockaddr * ) &sock,sizeof(sock)) < 0) {
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| 78 | close(res);
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| 79 | return(-1);
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| 80 | }
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| 81 |
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| 82 | set_socket_options(res,"SO_BROADCAST");
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| 83 |
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| 84 | return res;
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| 85 | }
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| 86 |
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| 87 |
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| 88 | static void nss_wins_init(void)
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| 89 | {
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| 90 | initialised = 1;
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