1 const char jbsockets_rcs[] = "$Id: jbsockets.c,v 1.35.2.8 2006/01/21 16:16:08 david__schmidt Exp $";
2 /*********************************************************************
4 * File : $Source: /cvsroot/ijbswa/current/Attic/jbsockets.c,v $
6 * Purpose : Contains wrappers for system-specific sockets code,
7 * so that the rest of Junkbuster can be more
8 * OS-independent. Contains #ifdefs to make this work
11 * Copyright : Written by and Copyright (C) 2001 the SourceForge
12 * Privoxy team. http://www.privoxy.org/
14 * Based on the Internet Junkbuster originally written
15 * by and Copyright (C) 1997 Anonymous Coders and
16 * Junkbusters Corporation. http://www.junkbusters.com
18 * This program is free software; you can redistribute it
19 * and/or modify it under the terms of the GNU General
20 * Public License as published by the Free Software
21 * Foundation; either version 2 of the License, or (at
22 * your option) any later version.
24 * This program is distributed in the hope that it will
25 * be useful, but WITHOUT ANY WARRANTY; without even the
26 * implied warranty of MERCHANTABILITY or FITNESS FOR A
27 * PARTICULAR PURPOSE. See the GNU General Public
28 * License for more details.
30 * The GNU General Public License should be included with
31 * this file. If not, you can view it at
32 * http://www.gnu.org/copyleft/gpl.html
33 * or write to the Free Software Foundation, Inc., 59
34 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
37 * $Log: jbsockets.c,v $
38 * Revision 1.35.2.8 2006/01/21 16:16:08 david__schmidt
39 * Thanks to Edward Carrel for his patch to modernize OSX's
\rpthreads support. See bug #1409623.
41 * Revision 1.35.2.7 2005/05/07 21:50:55 david__schmidt
42 * A few memory leaks plugged (mostly on error paths)
44 * Revision 1.35.2.6 2003/12/17 16:34:40 oes
47 * Revision 1.35.2.5 2003/04/29 11:32:54 oes
48 * Don't rely on h_addr being non-NULL after gethostbyname.
49 * Works around an oddness in Max OSX and closes bug #724796
51 * Revision 1.35.2.4 2003/04/04 12:40:20 oes
52 * Made sure the errno set by bind, not close[socket] is used in
53 * bind_port. Probably fixes bugs #713777, #705562.
55 * Revision 1.35.2.3 2003/03/07 03:41:04 david__schmidt
56 * Wrapping all *_r functions (the non-_r versions of them) with mutex semaphores for OSX. Hopefully this will take care of all of those pesky crash reports.
58 * Revision 1.35.2.2 2002/11/20 14:37:24 oes
59 * Fixed Win32 error logging in bind_port.
60 * Thanks to Oliver Stoeneberg for the hint.
62 * Revision 1.35.2.1 2002/05/26 23:41:27 joergs
63 * AmigaOS: Fixed wrong type of len in write_socket()
65 * Revision 1.35 2002/04/26 15:50:04 joergs
66 * AmigaOS: No socklen_t, added AMIGA to the systems using int instead.
68 * Revision 1.34 2002/04/08 20:31:41 swa
71 * Revision 1.33 2002/04/03 16:02:18 gliptak
72 * Correcting compile warning with older gcc
74 * Revision 1.32 2002/03/31 17:18:59 jongfoster
75 * Win32 only: Enabling STRICT to fix a VC++ compile warning.
77 * Revision 1.31 2002/03/29 03:33:13 david__schmidt
78 * Fix Mac OSX compiler warnings
80 * Revision 1.30 2002/03/27 14:32:43 david__schmidt
81 * More compiler warning message maintenance
83 * Revision 1.29 2002/03/26 22:29:54 swa
84 * we have a new homepage!
86 * Revision 1.28 2002/03/24 13:25:43 swa
87 * name change related issues
89 * Revision 1.27 2002/03/13 00:27:05 jongfoster
92 * Revision 1.26 2002/03/11 22:07:02 david__schmidt
93 * OS/2 port maintenance:
94 * - Fixed EMX build - it had decayed a little
95 * - Fixed inexplicable crash during FD_ZERO - must be due to a bad macro.
96 * substituted a memset for now.
98 * Revision 1.25 2002/03/09 20:03:52 jongfoster
99 * - Making various functions return int rather than size_t.
100 * (Undoing a recent change). Since size_t is unsigned on
101 * Windows, functions like read_socket that return -1 on
102 * error cannot return a size_t.
104 * THIS WAS A MAJOR BUG - it caused frequent, unpredictable
105 * crashes, and also frequently caused JB to jump to 100%
106 * CPU and stay there. (Because it thought it had just
107 * read ((unsigned)-1) == 4Gb of data...)
109 * - The signature of write_socket has changed, it now simply
110 * returns success=0/failure=nonzero.
112 * - Trying to get rid of a few warnings --with-debug on
113 * Windows, I've introduced a new type "jb_socket". This is
114 * used for the socket file descriptors. On Windows, this
115 * is SOCKET (a typedef for unsigned). Everywhere else, it's
116 * an int. The error value can't be -1 any more, so it's
117 * now JB_INVALID_SOCKET (which is -1 on UNIX, and in
118 * Windows it maps to the #define INVALID_SOCKET.)
120 * - The signature of bind_port has changed.
122 * Revision 1.24 2002/03/07 03:51:36 oes
123 * - Improved handling of failed DNS lookups
124 * - Fixed compiler warnings etc
126 * Revision 1.23 2002/03/05 00:36:01 jongfoster
127 * Fixing bug 514988 - unable to restart Junkbuster
129 * Revision 1.22 2002/03/04 02:08:02 david__schmidt
130 * Enable web editing of actions file on OS/2 (it had been broken all this time!)
132 * Revision 1.21 2002/01/09 14:32:33 oes
133 * Added support for gethostbyname_r and gethostbyaddr_r.
135 * Revision 1.20 2001/11/16 00:48:48 jongfoster
136 * Enabling duplicate-socket detection for all platforms, not
139 * Revision 1.19 2001/10/25 03:40:47 david__schmidt
140 * Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
141 * threads to call select() simultaneously. So, it's time to do a real, live,
142 * native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
143 * (native). Both versions will work, but using __OS2__ offers multi-threading.
145 * Revision 1.18 2001/09/21 23:02:02 david__schmidt
146 * Cleaning up 2 compiler warnings on OS/2.
148 * Revision 1.17 2001/09/13 20:11:46 jongfoster
149 * Fixing 2 compiler warnings under Win32
151 * Revision 1.16 2001/07/30 22:08:36 jongfoster
152 * Tidying up #defines:
153 * - All feature #defines are now of the form FEATURE_xxx
154 * - Permanently turned off WIN_GUI_EDIT
155 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
157 * Revision 1.15 2001/07/29 17:40:43 jongfoster
158 * Fixed compiler warning by adding a cast
160 * Revision 1.14 2001/07/18 13:47:59 oes
161 * Eliminated dirty hack for getsockbyname()
163 * Revision 1.13 2001/07/15 13:56:57 jongfoster
164 * Removing unused local variable.
166 * Revision 1.12 2001/07/01 17:04:11 oes
167 * Bugfix: accept_connection no longer uses the obsolete hstrerror() function
169 * Revision 1.11 2001/06/29 21:45:41 oes
170 * Indentation, CRLF->LF, Tab-> Space
172 * Revision 1.10 2001/06/29 13:29:15 oes
173 * - Added remote (server) host IP to csp->http->host_ip_addr_str
174 * - Added detection of local socket IP and fqdn
175 * - Removed logentry from cancelled commit
177 * Revision 1.9 2001/06/07 23:06:09 jongfoster
178 * The host parameter to connect_to() is now const.
180 * Revision 1.8 2001/06/03 19:12:07 oes
183 * Revision 1.7 2001/05/28 16:14:00 jongfoster
184 * Fixing bug in LOG_LEVEL_LOG
186 * Revision 1.6 2001/05/26 17:28:32 jongfoster
187 * Fixed LOG_LEVEL_LOG
189 * Revision 1.5 2001/05/26 15:26:15 jongfoster
190 * ACL feature now provides more security by immediately dropping
191 * connections from untrusted hosts.
193 * Revision 1.4 2001/05/26 00:37:42 jongfoster
194 * Cosmetic indentation correction.
196 * Revision 1.3 2001/05/25 21:57:54 jongfoster
197 * Now gives a warning under Windows if you try to bind
198 * it to a port that's already in use.
200 * Revision 1.2 2001/05/17 23:01:01 oes
201 * - Cleaned CRLF's from the sources and related files
203 * Revision 1.1.1.1 2001/05/15 13:58:54 oes
204 * Initial import of version 2.9.3 source tree
207 *********************************************************************/
217 #include <sys/types.h>
225 #include <sys/timeb.h>
233 #include <sys/time.h>
234 #include <netinet/in.h>
235 #include <sys/ioctl.h>
237 #include <sys/socket.h>
240 #include <netinet/tcp.h>
242 #include <arpa/inet.h>
248 #if defined(__EMX__) || defined (__OS2__)
249 #include <sys/select.h> /* OS/2/EMX needs a little help with select */
262 /* jcc.h is for mutex semaphores only */
263 #endif /* def OSX_DARWIN */
265 #include "jbsockets.h"
269 const char jbsockets_h_rcs[] = JBSOCKETS_H_VERSION;
272 /*********************************************************************
274 * Function : connect_to
276 * Description : Open a socket and connect to it. Will check
277 * that this is allowed according to ACL.
280 * 1 : host = hostname to connect to
281 * 2 : portnum = port to connent on
282 * 3 : csp = Current client state (buffers, headers, etc...)
283 * Not modified, only used for source IP and ACL.
285 * Returns : JB_INVALID_SOCKET => failure, else it is the socket
288 *********************************************************************/
289 jb_socket connect_to(const char *host, int portnum, struct client_state *csp)
291 struct sockaddr_in inaddr;
295 struct timeval tv[1];
296 #if !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA)
298 #endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) */
301 struct access_control_addr dst[1];
302 #endif /* def FEATURE_ACL */
304 memset((char *)&inaddr, 0, sizeof inaddr);
306 if ((addr = resolve_hostname_to_ip(host)) == INADDR_NONE)
308 csp->http->host_ip_addr_str = strdup("unknown");
309 return(JB_INVALID_SOCKET);
313 dst->addr = ntohl((unsigned long) addr);
316 if (block_acl(dst, csp))
323 return(JB_INVALID_SOCKET);
325 #endif /* def FEATURE_ACL */
327 inaddr.sin_addr.s_addr = addr;
328 inaddr.sin_family = AF_INET;
329 csp->http->host_ip_addr_str = strdup(inet_ntoa(inaddr.sin_addr));
332 if (sizeof(inaddr.sin_port) == sizeof(short))
333 #endif /* ndef _WIN32 */
335 inaddr.sin_port = htons((unsigned short) portnum);
340 inaddr.sin_port = htonl((unsigned long)portnum);
342 #endif /* ndef _WIN32 */
345 if ((fd = socket(inaddr.sin_family, SOCK_STREAM, 0)) == JB_INVALID_SOCKET)
347 if ((fd = socket(inaddr.sin_family, SOCK_STREAM, 0)) < 0)
350 return(JB_INVALID_SOCKET);
354 { /* turn off TCP coalescence */
356 setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *) &mi, sizeof (int));
358 #endif /* def TCP_NODELAY */
360 #if !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__)
361 if ((flags = fcntl(fd, F_GETFL, 0)) != -1)
364 fcntl(fd, F_SETFL, flags);
366 #endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__) */
368 while (connect(fd, (struct sockaddr *) & inaddr, sizeof inaddr) == JB_INVALID_SOCKET)
371 if (errno == WSAEINPROGRESS)
373 if (sock_errno() == EINPROGRESS)
374 #else /* ifndef _WIN32 */
375 if (errno == EINPROGRESS)
376 #endif /* ndef _WIN32 || __OS2__ */
382 if (sock_errno() != EINTR)
388 return(JB_INVALID_SOCKET);
392 #if !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__)
396 fcntl(fd, F_SETFL, flags);
398 #endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__) */
400 /* wait for connection to complete */
407 /* MS Windows uses int, not SOCKET, for the 1st arg of select(). Wierd! */
408 if (select((int)fd + 1, NULL, &wfds, NULL, tv) <= 0)
411 return(JB_INVALID_SOCKET);
418 /*********************************************************************
420 * Function : write_socket
422 * Description : Write the contents of buf (for n bytes) to socket fd.
425 * 1 : fd = file descriptor (aka. handle) of socket to write to.
426 * 2 : buf = pointer to data to be written.
427 * 3 : len = length of data to be written to the socket "fd".
429 * Returns : 0 on success (entire buffer sent).
432 *********************************************************************/
434 int write_socket(jb_socket fd, const char *buf, ssize_t len)
436 int write_socket(jb_socket fd, const char *buf, size_t len)
444 if (len < 0) /* constant condition - size_t isn't ever negative */
449 log_error(LOG_LEVEL_LOG, "%N", len, buf);
452 return (send(fd, buf, (int)len, 0) != (int)len);
453 #elif defined(__BEOS__) || defined(AMIGA)
454 return (send(fd, buf, len, 0) != len);
455 #elif defined(__OS2__)
457 * Break the data up into SOCKET_SEND_MAX chunks for sending...
458 * OS/2 seemed to complain when the chunks were too large.
460 #define SOCKET_SEND_MAX 65000
462 int write_len = 0, send_len, send_rc = 0, i = 0;
463 while ((i < len) && (send_rc != -1))
465 if ((i + SOCKET_SEND_MAX) > len)
468 send_len = SOCKET_SEND_MAX;
469 send_rc = send(fd,(char*)buf + i, send_len, 0);
477 return (write(fd, buf, len) != len);
483 /*********************************************************************
485 * Function : read_socket
487 * Description : Read from a TCP/IP socket in a platform independent way.
490 * 1 : fd = file descriptor of the socket to read
491 * 2 : buf = pointer to buffer where data will be written
492 * Must be >= len bytes long.
493 * 3 : len = maximum number of bytes to read
495 * Returns : On success, the number of bytes read is returned (zero
496 * indicates end of file), and the file position is advanced
497 * by this number. It is not an error if this number is
498 * smaller than the number of bytes requested; this may hap-
499 * pen for example because fewer bytes are actually available
500 * right now (maybe because we were close to end-of-file, or
501 * because we are reading from a pipe, or from a terminal,
502 * or because read() was interrupted by a signal). On error,
503 * -1 is returned, and errno is set appropriately. In this
504 * case it is left unspecified whether the file position (if
507 *********************************************************************/
508 int read_socket(jb_socket fd, char *buf, int len)
516 return(recv(fd, buf, len, 0));
517 #elif defined(__BEOS__) || defined(AMIGA) || defined(__OS2__)
518 return(recv(fd, buf, (size_t)len, 0));
520 return(read(fd, buf, (size_t)len));
525 /*********************************************************************
527 * Function : close_socket
529 * Description : Closes a TCP/IP socket
532 * 1 : fd = file descriptor of socket to be closed
536 *********************************************************************/
537 void close_socket(jb_socket fd)
539 #if defined(_WIN32) || defined(__BEOS__)
543 #elif defined(__OS2__)
552 /*********************************************************************
554 * Function : bind_port
556 * Description : Call socket, set socket options, and listen.
557 * Called by listen_loop to "boot up" our proxy address.
560 * 1 : hostnam = TCP/IP address to bind/listen to
561 * 2 : portnum = port to listen on
562 * 3 : pfd = pointer used to return file descriptor.
564 * Returns : if success, returns 0 and sets *pfd.
565 * if failure, returns -3 if address is in use,
566 * -2 if address unresolvable,
568 *********************************************************************/
569 int bind_port(const char *hostnam, int portnum, jb_socket *pfd)
571 struct sockaddr_in inaddr;
575 #endif /* ndef _WIN32 */
577 *pfd = JB_INVALID_SOCKET;
579 memset((char *)&inaddr, '\0', sizeof inaddr);
581 inaddr.sin_family = AF_INET;
582 inaddr.sin_addr.s_addr = resolve_hostname_to_ip(hostnam);
584 if (inaddr.sin_addr.s_addr == INADDR_NONE)
590 if (sizeof(inaddr.sin_port) == sizeof(short))
591 #endif /* ndef _WIN32 */
593 inaddr.sin_port = htons((unsigned short) portnum);
598 inaddr.sin_port = htonl((unsigned long) portnum);
600 #endif /* ndef _WIN32 */
602 fd = socket(AF_INET, SOCK_STREAM, 0);
605 if (fd == JB_INVALID_SOCKET)
615 * This is not needed for Win32 - in fact, it stops
616 * duplicate instances of Privoxy from being caught.
618 * On UNIX, we assume the user is sensible enough not
619 * to start Junkbuster multiple times on the same IP.
620 * Without this, stopping and restarting Privoxy
621 * from a script fails.
622 * Note: SO_REUSEADDR is meant to only take over
623 * sockets which are *not* in listen state in Linux,
624 * e.g. sockets in TIME_WAIT. YMMV.
626 setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one));
627 #endif /* ndef _WIN32 */
629 if (bind(fd, (struct sockaddr *)&inaddr, sizeof(inaddr)) < 0)
632 errno = WSAGetLastError();
633 if (errno == WSAEADDRINUSE)
635 if (errno == EADDRINUSE)
648 while (listen(fd, 5) == -1)
662 /*********************************************************************
664 * Function : accept_connection
666 * Description : Accepts a connection on a socket. Socket must have
667 * been created using bind_port().
670 * 1 : csp = Client state, cfd, ip_addr_str, and
671 * ip_addr_long will be set by this routine.
672 * 2 : fd = file descriptor returned from bind_port
674 * Returns : when a connection is accepted, it returns 1 (TRUE).
675 * On an error it returns 0 (FALSE).
677 *********************************************************************/
678 int accept_connection(struct client_state * csp, jb_socket fd)
680 struct sockaddr_in client, server;
681 struct hostent *host = NULL;
683 #if defined(_WIN32) || defined(__OS2__) || defined(__APPLE_CC__) || defined(AMIGA)
684 /* Wierdness - fix a warning. */
685 int c_length, s_length;
687 socklen_t c_length, s_length;
689 #if defined(HAVE_GETHOSTBYADDR_R_8_ARGS) || defined(HAVE_GETHOSTBYADDR_R_7_ARGS) || defined(HAVE_GETHOSTBYADDR_R_5_ARGS)
690 struct hostent result;
691 #if defined(HAVE_GETHOSTBYADDR_R_5_ARGS)
692 struct hostent_data hdata;
694 char hbuf[HOSTENT_BUFFER_SIZE];
696 #endif /* def HAVE_GETHOSTBYADDR_R_5_ARGS */
697 #endif /* def HAVE_GETHOSTBYADDR_R_(8|7|5)_ARGS */
699 c_length = s_length = sizeof(client);
702 afd = accept (fd, (struct sockaddr *) &client, &c_length);
703 if (afd == JB_INVALID_SOCKET)
710 afd = accept (fd, (struct sockaddr *) &client, &c_length);
711 } while (afd < 1 && errno == EINTR);
719 * Determine the IP-Adress that the client used to reach us
720 * and the hostname associated with that address
722 if (!getsockname(afd, (struct sockaddr *) &server, &s_length))
724 csp->my_ip_addr_str = strdup(inet_ntoa(server.sin_addr));
725 #if defined(HAVE_GETHOSTBYADDR_R_8_ARGS)
726 gethostbyaddr_r((const char *)&server.sin_addr,
727 sizeof(server.sin_addr), AF_INET,
728 &result, hbuf, HOSTENT_BUFFER_SIZE,
730 #elif defined(HAVE_GETHOSTBYADDR_R_7_ARGS)
731 host = gethostbyaddr_r((const char *)&server.sin_addr,
732 sizeof(server.sin_addr), AF_INET,
733 &result, hbuf, HOSTENT_BUFFER_SIZE, &thd_err);
734 #elif defined(HAVE_GETHOSTBYADDR_R_5_ARGS)
735 if (0 == gethostbyaddr_r((const char *)&server.sin_addr,
736 sizeof(server.sin_addr), AF_INET,
745 #elif defined(OSX_DARWIN)
746 pthread_mutex_lock(&gethostbyaddr_mutex);
747 host = gethostbyaddr((const char *)&server.sin_addr,
748 sizeof(server.sin_addr), AF_INET);
749 pthread_mutex_unlock(&gethostbyaddr_mutex);
751 host = gethostbyaddr((const char *)&server.sin_addr,
752 sizeof(server.sin_addr), AF_INET);
756 log_error(LOG_LEVEL_ERROR, "Unable to get my own hostname: %E\n");
760 csp->my_hostname = strdup(host->h_name);
765 csp->ip_addr_str = strdup(inet_ntoa(client.sin_addr));
766 csp->ip_addr_long = ntohl(client.sin_addr.s_addr);
773 /*********************************************************************
775 * Function : resolve_hostname_to_ip
777 * Description : Resolve a hostname to an internet tcp/ip address.
778 * NULL or an empty string resolve to INADDR_ANY.
781 * 1 : host = hostname to resolve
783 * Returns : INADDR_NONE => failure, INADDR_ANY or tcp/ip address if succesful.
785 *********************************************************************/
786 unsigned long resolve_hostname_to_ip(const char *host)
788 struct sockaddr_in inaddr;
789 struct hostent *hostp;
790 #if defined(HAVE_GETHOSTBYNAME_R_6_ARGS) || defined(HAVE_GETHOSTBYNAME_R_5_ARGS) || defined(HAVE_GETHOSTBYNAME_R_3_ARGS)
791 struct hostent result;
792 #if defined(HAVE_GETHOSTBYNAME_R_6_ARGS) || defined(HAVE_GETHOSTBYNAME_R_5_ARGS)
793 char hbuf[HOSTENT_BUFFER_SIZE];
795 #else /* defined(HAVE_GETHOSTBYNAME_R_3_ARGS) */
796 struct hostent_data hdata;
797 #endif /* def HAVE_GETHOSTBYNAME_R_(6|5)_ARGS */
798 #endif /* def HAVE_GETHOSTBYNAME_R_(6|5|3)_ARGS */
800 if ((host == NULL) || (*host == '\0'))
805 memset((char *) &inaddr, 0, sizeof inaddr);
807 if ((inaddr.sin_addr.s_addr = inet_addr(host)) == -1)
809 #if defined(HAVE_GETHOSTBYNAME_R_6_ARGS)
810 gethostbyname_r(host, &result, hbuf,
811 HOSTENT_BUFFER_SIZE, &hostp, &thd_err);
812 #elif defined(HAVE_GETHOSTBYNAME_R_5_ARGS)
813 hostp = gethostbyname_r(host, &result, hbuf,
814 HOSTENT_BUFFER_SIZE, &thd_err);
815 #elif defined(HAVE_GETHOSTBYNAME_R_3_ARGS)
816 if (0 == gethostbyname_r(host, &result, &hdata))
825 pthread_mutex_lock(&gethostbyname_mutex);
826 hostp = gethostbyname(host);
827 pthread_mutex_unlock(&gethostbyname_mutex);
829 hostp = gethostbyname(host);
830 #endif /* def HAVE_GETHOSTBYNAME_R_(6|5|3)_ARGS */
832 * On Mac OSX, if a domain exists but doesn't have a type A
833 * record associated with it, the h_addr member of the struct
834 * hostent returned by gethostbyname is NULL, even if h_length
835 * is 4. Therefore the second test below.
837 if (hostp == NULL || hostp->h_addr == NULL)
840 log_error(LOG_LEVEL_ERROR, "could not resolve hostname %s", host);
843 if (hostp->h_addrtype != AF_INET)
846 errno = WSAEPROTOTYPE;
850 log_error(LOG_LEVEL_ERROR, "hostname %s resolves to unknown address type.", host);
854 (char *) &inaddr.sin_addr,
855 (char *) hostp->h_addr,
856 sizeof(inaddr.sin_addr)
859 return(inaddr.sin_addr.s_addr);