+++ /dev/null
-const char jbsockets_rcs[] = "$Id: jbsockets.c,v 2.1 2002/12/30 19:56:16 david__schmidt Exp $";
-/*********************************************************************
- *
- * File : $Source: /cvsroot/ijbswa/current/src/jbsockets.c,v $
- *
- * Purpose : Contains wrappers for system-specific sockets code,
- * so that the rest of Junkbuster can be more
- * OS-independent. Contains #ifdefs to make this work
- * on many platforms.
- *
- * Copyright : Written by and Copyright (C) 2001 the SourceForge
- * Privoxy team. http://www.privoxy.org/
- *
- * Based on the Internet Junkbuster originally written
- * by and Copyright (C) 1997 Anonymous Coders and
- * Junkbusters Corporation. http://www.junkbusters.com
- *
- * This program is free software; you can redistribute it
- * and/or modify it under the terms of the GNU General
- * Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will
- * be useful, but WITHOUT ANY WARRANTY; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A
- * PARTICULAR PURPOSE. See the GNU General Public
- * License for more details.
- *
- * The GNU General Public License should be included with
- * this file. If not, you can view it at
- * http://www.gnu.org/copyleft/gpl.html
- * or write to the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- *
- * Revisions :
- * $Log: jbsockets.c,v $
- * Revision 2.1 2002/12/30 19:56:16 david__schmidt
- * End of initial drop of statistics console infrastructure. Data stream
- * is transmitted on the stats port every interval, provided the data has
- * changed since the last transmission. More work probably needs to be
- * done with regard to multiplatform threading; I stole the thread spawning
- * code from jcc.c, but haven't been able to test it everywhere.
- *
- * Revision 2.0 2002/06/04 14:34:21 jongfoster
- * Moving source files to src/
- *
- * Revision 1.36 2002/05/26 23:23:10 joergs
- * AmigaOS: Fixed wrong type for len in write_socket()
- *
- * Revision 1.35 2002/04/26 15:50:04 joergs
- * AmigaOS: No socklen_t, added AMIGA to the systems using int instead.
- *
- * Revision 1.34 2002/04/08 20:31:41 swa
- * fixed JB spelling
- *
- * Revision 1.33 2002/04/03 16:02:18 gliptak
- * Correcting compile warning with older gcc
- *
- * Revision 1.32 2002/03/31 17:18:59 jongfoster
- * Win32 only: Enabling STRICT to fix a VC++ compile warning.
- *
- * Revision 1.31 2002/03/29 03:33:13 david__schmidt
- * Fix Mac OSX compiler warnings
- *
- * Revision 1.30 2002/03/27 14:32:43 david__schmidt
- * More compiler warning message maintenance
- *
- * Revision 1.29 2002/03/26 22:29:54 swa
- * we have a new homepage!
- *
- * Revision 1.28 2002/03/24 13:25:43 swa
- * name change related issues
- *
- * Revision 1.27 2002/03/13 00:27:05 jongfoster
- * Killing warnings
- *
- * Revision 1.26 2002/03/11 22:07:02 david__schmidt
- * OS/2 port maintenance:
- * - Fixed EMX build - it had decayed a little
- * - Fixed inexplicable crash during FD_ZERO - must be due to a bad macro.
- * substituted a memset for now.
- *
- * Revision 1.25 2002/03/09 20:03:52 jongfoster
- * - Making various functions return int rather than size_t.
- * (Undoing a recent change). Since size_t is unsigned on
- * Windows, functions like read_socket that return -1 on
- * error cannot return a size_t.
- *
- * THIS WAS A MAJOR BUG - it caused frequent, unpredictable
- * crashes, and also frequently caused JB to jump to 100%
- * CPU and stay there. (Because it thought it had just
- * read ((unsigned)-1) == 4Gb of data...)
- *
- * - The signature of write_socket has changed, it now simply
- * returns success=0/failure=nonzero.
- *
- * - Trying to get rid of a few warnings --with-debug on
- * Windows, I've introduced a new type "jb_socket". This is
- * used for the socket file descriptors. On Windows, this
- * is SOCKET (a typedef for unsigned). Everywhere else, it's
- * an int. The error value can't be -1 any more, so it's
- * now JB_INVALID_SOCKET (which is -1 on UNIX, and in
- * Windows it maps to the #define INVALID_SOCKET.)
- *
- * - The signature of bind_port has changed.
- *
- * Revision 1.24 2002/03/07 03:51:36 oes
- * - Improved handling of failed DNS lookups
- * - Fixed compiler warnings etc
- *
- * Revision 1.23 2002/03/05 00:36:01 jongfoster
- * Fixing bug 514988 - unable to restart Junkbuster
- *
- * Revision 1.22 2002/03/04 02:08:02 david__schmidt
- * Enable web editing of actions file on OS/2 (it had been broken all this time!)
- *
- * Revision 1.21 2002/01/09 14:32:33 oes
- * Added support for gethostbyname_r and gethostbyaddr_r.
- *
- * Revision 1.20 2001/11/16 00:48:48 jongfoster
- * Enabling duplicate-socket detection for all platforms, not
- * just Win32.
- *
- * Revision 1.19 2001/10/25 03:40:47 david__schmidt
- * Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
- * threads to call select() simultaneously. So, it's time to do a real, live,
- * native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
- * (native). Both versions will work, but using __OS2__ offers multi-threading.
- *
- * Revision 1.18 2001/09/21 23:02:02 david__schmidt
- * Cleaning up 2 compiler warnings on OS/2.
- *
- * Revision 1.17 2001/09/13 20:11:46 jongfoster
- * Fixing 2 compiler warnings under Win32
- *
- * Revision 1.16 2001/07/30 22:08:36 jongfoster
- * Tidying up #defines:
- * - All feature #defines are now of the form FEATURE_xxx
- * - Permanently turned off WIN_GUI_EDIT
- * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
- *
- * Revision 1.15 2001/07/29 17:40:43 jongfoster
- * Fixed compiler warning by adding a cast
- *
- * Revision 1.14 2001/07/18 13:47:59 oes
- * Eliminated dirty hack for getsockbyname()
- *
- * Revision 1.13 2001/07/15 13:56:57 jongfoster
- * Removing unused local variable.
- *
- * Revision 1.12 2001/07/01 17:04:11 oes
- * Bugfix: accept_connection no longer uses the obsolete hstrerror() function
- *
- * Revision 1.11 2001/06/29 21:45:41 oes
- * Indentation, CRLF->LF, Tab-> Space
- *
- * Revision 1.10 2001/06/29 13:29:15 oes
- * - Added remote (server) host IP to csp->http->host_ip_addr_str
- * - Added detection of local socket IP and fqdn
- * - Removed logentry from cancelled commit
- *
- * Revision 1.9 2001/06/07 23:06:09 jongfoster
- * The host parameter to connect_to() is now const.
- *
- * Revision 1.8 2001/06/03 19:12:07 oes
- * filled comment
- *
- * Revision 1.7 2001/05/28 16:14:00 jongfoster
- * Fixing bug in LOG_LEVEL_LOG
- *
- * Revision 1.6 2001/05/26 17:28:32 jongfoster
- * Fixed LOG_LEVEL_LOG
- *
- * Revision 1.5 2001/05/26 15:26:15 jongfoster
- * ACL feature now provides more security by immediately dropping
- * connections from untrusted hosts.
- *
- * Revision 1.4 2001/05/26 00:37:42 jongfoster
- * Cosmetic indentation correction.
- *
- * Revision 1.3 2001/05/25 21:57:54 jongfoster
- * Now gives a warning under Windows if you try to bind
- * it to a port that's already in use.
- *
- * Revision 1.2 2001/05/17 23:01:01 oes
- * - Cleaned CRLF's from the sources and related files
- *
- * Revision 1.1.1.1 2001/05/15 13:58:54 oes
- * Initial import of version 2.9.3 source tree
- *
- *
- *********************************************************************/
-\f
-
-#include "config.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/types.h>
-
-#ifdef _WIN32
-
-#ifndef STRICT
-#define STRICT
-#endif
-#include <windows.h>
-#include <sys/timeb.h>
-#include <io.h>
-
-#else
-
-#ifndef __OS2__
-#include <unistd.h>
-#endif
-#include <sys/time.h>
-#include <netinet/in.h>
-#include <sys/ioctl.h>
-#include <netdb.h>
-#include <sys/socket.h>
-
-#ifndef __BEOS__
-#include <netinet/tcp.h>
-#ifndef __OS2__
-#include <arpa/inet.h>
-#endif
-#else
-#include <socket.h>
-#endif
-
-#if defined(__EMX__) || defined (__OS2__)
-#include <sys/select.h> /* OS/2/EMX needs a little help with select */
-#ifdef __OS2__
-#include <nerrno.h>
-#endif
-#endif
-
-#endif
-
-#ifdef OSX_DARWIN
-#include <pthread.h>
-#include "jcc.h"
-/* jcc.h is for mutex semaphores only */
-#endif /* def OSX_DARWIN */
-
-#include "project.h"
-#include "jbsockets.h"
-#include "filters.h"
-#include "errlog.h"
-
-const char jbsockets_h_rcs[] = JBSOCKETS_H_VERSION;
-
-
-/*********************************************************************
- *
- * Function : connect_to
- *
- * Description : Open a socket and connect to it. Will check
- * that this is allowed according to ACL.
- *
- * Parameters :
- * 1 : host = hostname to connect to
- * 2 : portnum = port to connent on
- * 3 : csp = Current client state (buffers, headers, etc...)
- * Not modified, only used for source IP and ACL.
- *
- * Returns : JB_INVALID_SOCKET => failure, else it is the socket
- * file descriptor.
- *
- *********************************************************************/
-jb_socket connect_to(const char *host, int portnum, struct client_state *csp)
-{
- struct sockaddr_in inaddr;
- jb_socket fd;
- int addr;
- fd_set wfds;
- struct timeval tv[1];
-#if !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA)
- int flags;
-#endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) */
-
-#ifdef FEATURE_ACL
- struct access_control_addr dst[1];
-#endif /* def FEATURE_ACL */
-
- memset((char *)&inaddr, 0, sizeof inaddr);
-
- if ((addr = resolve_hostname_to_ip(host)) == INADDR_NONE)
- {
- if (csp)
- {
- csp->http->host_ip_addr_str = strdup("unknown");
- }
- return(JB_INVALID_SOCKET);
- }
-
-#ifdef FEATURE_ACL
- if (csp)
- {
- dst->addr = ntohl((unsigned long) addr);
- dst->port = portnum;
-
- if (block_acl(dst, csp))
- {
-#ifdef __OS2__
- errno = SOCEPERM;
-#else
- errno = EPERM;
-#endif
- return(JB_INVALID_SOCKET);
- }
- }
-#endif /* def FEATURE_ACL */
-
- inaddr.sin_addr.s_addr = addr;
- inaddr.sin_family = AF_INET;
- if (csp)
- {
- csp->http->host_ip_addr_str = strdup(inet_ntoa(inaddr.sin_addr));
- }
-#ifndef _WIN32
- if (sizeof(inaddr.sin_port) == sizeof(short))
-#endif /* ndef _WIN32 */
- {
- inaddr.sin_port = htons((unsigned short) portnum);
- }
-#ifndef _WIN32
- else
- {
- inaddr.sin_port = htonl((unsigned long)portnum);
- }
-#endif /* ndef _WIN32 */
-
-#ifdef _WIN32
- if ((fd = socket(inaddr.sin_family, SOCK_STREAM, 0)) == JB_INVALID_SOCKET)
-#else
- if ((fd = socket(inaddr.sin_family, SOCK_STREAM, 0)) < 0)
-#endif
- {
- return(JB_INVALID_SOCKET);
- }
-
-#ifdef TCP_NODELAY
- { /* turn off TCP coalescence */
- int mi = 1;
- setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, (char *) &mi, sizeof (int));
- }
-#endif /* def TCP_NODELAY */
-
-#if !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__)
- if ((flags = fcntl(fd, F_GETFL, 0)) != -1)
- {
- flags |= O_NDELAY;
- fcntl(fd, F_SETFL, flags);
- }
-#endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__) */
-
- while (connect(fd, (struct sockaddr *) & inaddr, sizeof inaddr) == JB_INVALID_SOCKET)
- {
-#ifdef _WIN32
- if (errno == WSAEINPROGRESS)
-#elif __OS2__
- if (sock_errno() == EINPROGRESS)
-#else /* ifndef _WIN32 */
- if (errno == EINPROGRESS)
-#endif /* ndef _WIN32 || __OS2__ */
- {
- break;
- }
-
-#ifdef __OS2__
- if (sock_errno() != EINTR)
-#else
- if (errno != EINTR)
-#endif /* __OS2__ */
- {
- close_socket(fd);
- return(JB_INVALID_SOCKET);
- }
- }
-
-#if !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__)
- if (flags != -1)
- {
- flags &= ~O_NDELAY;
- fcntl(fd, F_SETFL, flags);
- }
-#endif /* !defined(_WIN32) && !defined(__BEOS__) && !defined(AMIGA) && !defined(__OS2__) */
-
- /* wait for connection to complete */
- FD_ZERO(&wfds);
- FD_SET(fd, &wfds);
-
- tv->tv_sec = 30;
- tv->tv_usec = 0;
-
- /* MS Windows uses int, not SOCKET, for the 1st arg of select(). Wierd! */
- if (select((int)fd + 1, NULL, &wfds, NULL, tv) <= 0)
- {
- close_socket(fd);
- return(JB_INVALID_SOCKET);
- }
- return(fd);
-
-}
-
-
-/*********************************************************************
- *
- * Function : write_socket
- *
- * Description : Write the contents of buf (for n bytes) to socket fd.
- *
- * Parameters :
- * 1 : fd = file descriptor (aka. handle) of socket to write to.
- * 2 : buf = pointer to data to be written.
- * 3 : len = length of data to be written to the socket "fd".
- *
- * Returns : 0 on success (entire buffer sent).
- * nonzero on error.
- *
- *********************************************************************/
-#ifdef AMIGA
-int write_socket(jb_socket fd, const char *buf, ssize_t len)
-#else
-int write_socket(jb_socket fd, const char *buf, size_t len)
-#endif
-{
- if (len == 0)
- {
- return 0;
- }
-
- if (len < 0)
- {
- return 1;
- }
-
- log_error(LOG_LEVEL_LOG, "%N", len, buf);
-
-#if defined(_WIN32)
- return (send(fd, buf, (int)len, 0) != (int)len);
-#elif defined(__BEOS__) || defined(AMIGA)
- return (send(fd, buf, len, 0) != len);
-#elif defined(__OS2__)
- /*
- * Break the data up into SOCKET_SEND_MAX chunks for sending...
- * OS/2 seemed to complain when the chunks were too large.
- */
-#define SOCKET_SEND_MAX 65000
- {
- int write_len = 0, send_len, send_rc = 0, i = 0;
- while ((i < len) && (send_rc != -1))
- {
- if ((i + SOCKET_SEND_MAX) > len)
- send_len = len - i;
- else
- send_len = SOCKET_SEND_MAX;
- send_rc = send(fd,(char*)buf + i, send_len, 0);
- if (send_rc == -1)
- return 1;
- i = i + send_len;
- }
- return 0;
- }
-#else
- return (write(fd, buf, len) != len);
-#endif
-
-}
-
-
-/*********************************************************************
- *
- * Function : read_socket
- *
- * Description : Read from a TCP/IP socket in a platform independent way.
- *
- * Parameters :
- * 1 : fd = file descriptor of the socket to read
- * 2 : buf = pointer to buffer where data will be written
- * Must be >= len bytes long.
- * 3 : len = maximum number of bytes to read
- *
- * Returns : On success, the number of bytes read is returned (zero
- * indicates end of file), and the file position is advanced
- * by this number. It is not an error if this number is
- * smaller than the number of bytes requested; this may hap-
- * pen for example because fewer bytes are actually available
- * right now (maybe because we were close to end-of-file, or
- * because we are reading from a pipe, or from a terminal,
- * or because read() was interrupted by a signal). On error,
- * -1 is returned, and errno is set appropriately. In this
- * case it is left unspecified whether the file position (if
- * any) changes.
- *
- *********************************************************************/
-int read_socket(jb_socket fd, char *buf, int len)
-{
- if (len <= 0)
- {
- return(0);
- }
-
-#if defined(_WIN32)
- return(recv(fd, buf, len, 0));
-#elif defined(__BEOS__) || defined(AMIGA) || defined(__OS2__)
- return(recv(fd, buf, (size_t)len, 0));
-#else
- return(read(fd, buf, (size_t)len));
-#endif
-}
-
-
-/*********************************************************************
- *
- * Function : close_socket
- *
- * Description : Closes a TCP/IP socket
- *
- * Parameters :
- * 1 : fd = file descriptor of socket to be closed
- *
- * Returns : void
- *
- *********************************************************************/
-void close_socket(jb_socket fd)
-{
-#if defined(_WIN32) || defined(__BEOS__)
- closesocket(fd);
-#elif defined(AMIGA)
- CloseSocket(fd);
-#elif defined(__OS2__)
- soclose(fd);
-#else
- close(fd);
-#endif
-
-}
-
-
-/*********************************************************************
- *
- * Function : bind_port
- *
- * Description : Call socket, set socket options, and listen.
- * Called by listen_loop to "boot up" our proxy address.
- *
- * Parameters :
- * 1 : hostnam = TCP/IP address to bind/listen to
- * 2 : portnum = port to listen on
- * 3 : pfd = pointer used to return file descriptor.
- *
- * Returns : if success, returns 0 and sets *pfd.
- * if failure, returns -3 if address is in use,
- * -2 if address unresolvable,
- * -1 otherwise
- *********************************************************************/
-int bind_port(const char *hostnam, int portnum, jb_socket *pfd)
-{
- struct sockaddr_in inaddr;
- jb_socket fd;
-#ifndef _WIN32
- int one = 1;
-#endif /* ndef _WIN32 */
-
- *pfd = JB_INVALID_SOCKET;
-
- memset((char *)&inaddr, '\0', sizeof inaddr);
-
- inaddr.sin_family = AF_INET;
- inaddr.sin_addr.s_addr = resolve_hostname_to_ip(hostnam);
-
- if (inaddr.sin_addr.s_addr == INADDR_NONE)
- {
- return(-2);
- }
-
-#ifndef _WIN32
- if (sizeof(inaddr.sin_port) == sizeof(short))
-#endif /* ndef _WIN32 */
- {
- inaddr.sin_port = htons((unsigned short) portnum);
- }
-#ifndef _WIN32
- else
- {
- inaddr.sin_port = htonl((unsigned long) portnum);
- }
-#endif /* ndef _WIN32 */
-
- fd = socket(AF_INET, SOCK_STREAM, 0);
-
-#ifdef _WIN32
- if (fd == JB_INVALID_SOCKET)
-#else
- if (fd < 0)
-#endif
- {
- return(-1);
- }
-
-#ifndef _WIN32
- /*
- * This is not needed for Win32 - in fact, it stops
- * duplicate instances of Privoxy from being caught.
- *
- * On UNIX, we assume the user is sensible enough not
- * to start Junkbuster multiple times on the same IP.
- * Without this, stopping and restarting Privoxy
- * from a script fails.
- * Note: SO_REUSEADDR is meant to only take over
- * sockets which are *not* in listen state in Linux,
- * e.g. sockets in TIME_WAIT. YMMV.
- */
- setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *)&one, sizeof(one));
-#endif /* ndef _WIN32 */
-
- if (bind (fd, (struct sockaddr *)&inaddr, sizeof(inaddr)) < 0)
- {
- close_socket (fd);
-#ifdef _WIN32
- if (errno == WSAEADDRINUSE)
-#else
- if (errno == EADDRINUSE)
-#endif
- {
- return(-3);
- }
- else
- {
- return(-1);
- }
- }
-
- while (listen(fd, 5) == -1)
- {
- if (errno != EINTR)
- {
- return(-1);
- }
- }
-
- *pfd = fd;
- return 0;
-
-}
-
-
-/*********************************************************************
- *
- * Function : accept_connection
- *
- * Description : Accepts a connection on a socket. Socket must have
- * been created using bind_port().
- *
- * Parameters :
- * 1 : csp = Client state, cfd, ip_addr_str, and
- * ip_addr_long will be set by this routine.
- * 2 : fd = file descriptor returned from bind_port
- *
- * Returns : when a connection is accepted, it returns 1 (TRUE).
- * On an error it returns 0 (FALSE).
- *
- *********************************************************************/
-int accept_connection(struct client_state * csp, jb_socket fd)
-{
- struct sockaddr_in client, server;
- struct hostent *host = NULL;
- jb_socket afd;
-#if defined(_WIN32) || defined(__OS2__) || defined(__APPLE_CC__) || defined(AMIGA)
- /* Wierdness - fix a warning. */
- int c_length, s_length;
-#else
- socklen_t c_length, s_length;
-#endif
-#if defined(HAVE_GETHOSTBYADDR_R_8_ARGS) || defined(HAVE_GETHOSTBYADDR_R_7_ARGS) || defined(HAVE_GETHOSTBYADDR_R_5_ARGS)
- struct hostent result;
-#if defined(HAVE_GETHOSTBYADDR_R_5_ARGS)
- struct hostent_data hdata;
-#else
- char hbuf[HOSTENT_BUFFER_SIZE];
- int thd_err;
-#endif /* def HAVE_GETHOSTBYADDR_R_5_ARGS */
-#endif /* def HAVE_GETHOSTBYADDR_R_(8|7|5)_ARGS */
-
- c_length = s_length = sizeof(client);
-
-#ifdef _WIN32
- afd = accept (fd, (struct sockaddr *) &client, &c_length);
- if (afd == JB_INVALID_SOCKET)
- {
- return 0;
- }
-#else
- do
- {
- afd = accept (fd, (struct sockaddr *) &client, &c_length);
- } while (afd < 1 && errno == EINTR);
- if (afd < 0)
- {
- return 0;
- }
-#endif
-
- /*
- * Determine the IP-Adress that the client used to reach us
- * and the hostname associated with that address
- */
- if (!getsockname(afd, (struct sockaddr *) &server, &s_length))
- {
- csp->my_ip_addr_str = strdup(inet_ntoa(server.sin_addr));
-#if defined(HAVE_GETHOSTBYADDR_R_8_ARGS)
- gethostbyaddr_r((const char *)&server.sin_addr,
- sizeof(server.sin_addr), AF_INET,
- &result, hbuf, HOSTENT_BUFFER_SIZE,
- &host, &thd_err);
-#elif defined(HAVE_GETHOSTBYADDR_R_7_ARGS)
- host = gethostbyaddr_r((const char *)&server.sin_addr,
- sizeof(server.sin_addr), AF_INET,
- &result, hbuf, HOSTENT_BUFFER_SIZE, &thd_err);
-#elif defined(HAVE_GETHOSTBYADDR_R_5_ARGS)
- if (0 == gethostbyaddr_r((const char *)&server.sin_addr,
- sizeof(server.sin_addr), AF_INET,
- &result, &hdata))
- {
- host = &result;
- }
- else
- {
- host = NULL;
- }
-#elif defined(OSX_DARWIN)
- pthread_mutex_lock(&gethostbyaddr_mutex);
- host = gethostbyaddr((const char *)&server.sin_addr,
- sizeof(server.sin_addr), AF_INET);
- pthread_mutex_unlock(&gethostbyaddr_mutex);
-#else
- host = gethostbyaddr((const char *)&server.sin_addr,
- sizeof(server.sin_addr), AF_INET);
-#endif
- if (host == NULL)
- {
- log_error(LOG_LEVEL_ERROR, "Unable to get my own hostname: %E\n");
- }
- else
- {
- csp->my_hostname = strdup(host->h_name);
- }
- }
-
- csp->cfd = afd;
- csp->ip_addr_str = strdup(inet_ntoa(client.sin_addr));
- csp->ip_addr_long = ntohl(client.sin_addr.s_addr);
-
- return 1;
-
-}
-
-
-/*********************************************************************
- *
- * Function : resolve_hostname_to_ip
- *
- * Description : Resolve a hostname to an internet tcp/ip address.
- * NULL or an empty string resolve to INADDR_ANY.
- *
- * Parameters :
- * 1 : host = hostname to resolve
- *
- * Returns : INADDR_NONE => failure, INADDR_ANY or tcp/ip address if succesful.
- *
- *********************************************************************/
-unsigned long resolve_hostname_to_ip(const char *host)
-{
- struct sockaddr_in inaddr;
- struct hostent *hostp;
-#if defined(HAVE_GETHOSTBYNAME_R_6_ARGS) || defined(HAVE_GETHOSTBYNAME_R_5_ARGS) || defined(HAVE_GETHOSTBYNAME_R_3_ARGS)
- struct hostent result;
-#if defined(HAVE_GETHOSTBYNAME_R_6_ARGS) || defined(HAVE_GETHOSTBYNAME_R_5_ARGS)
- char hbuf[HOSTENT_BUFFER_SIZE];
- int thd_err;
-#else /* defined(HAVE_GETHOSTBYNAME_R_3_ARGS) */
- struct hostent_data hdata;
-#endif /* def HAVE_GETHOSTBYNAME_R_(6|5)_ARGS */
-#endif /* def HAVE_GETHOSTBYNAME_R_(6|5|3)_ARGS */
-
- if ((host == NULL) || (*host == '\0'))
- {
- return(INADDR_ANY);
- }
-
- memset((char *) &inaddr, 0, sizeof inaddr);
-
- if ((inaddr.sin_addr.s_addr = inet_addr(host)) == -1)
- {
-#if defined(HAVE_GETHOSTBYNAME_R_6_ARGS)
- gethostbyname_r(host, &result, hbuf,
- HOSTENT_BUFFER_SIZE, &hostp, &thd_err);
-#elif defined(HAVE_GETHOSTBYNAME_R_5_ARGS)
- hostp = gethostbyname_r(host, &result, hbuf,
- HOSTENT_BUFFER_SIZE, &thd_err);
-#elif defined(HAVE_GETHOSTBYNAME_R_3_ARGS)
- if (0 == gethostbyname_r(host, &result, &hdata))
- {
- hostp = &result;
- }
- else
- {
- hostp = NULL;
- }
-#elif OSX_DARWIN
- pthread_mutex_lock(&gethostbyname_mutex);
- hostp = gethostbyname(host);
- pthread_mutex_unlock(&gethostbyname_mutex);
-#else
- hostp = gethostbyname(host);
-#endif /* def HAVE_GETHOSTBYNAME_R_(6|5|3)_ARGS */
- /*
- * On Mac OSX, if a domain exists but doesn't have a type A
- * record associated with it, the h_addr member of the struct
- * hostent returned by gethostbyname is NULL, even if h_length
- * is 4. Therefore the second test below.
- */
- if (hostp == NULL || hostp->h_addr == NULL)
- {
- errno = EINVAL;
- log_error(LOG_LEVEL_ERROR, "could not resolve hostname %s", host);
- return(INADDR_NONE);
- }
- if (hostp->h_addrtype != AF_INET)
- {
-#ifdef _WIN32
- errno = WSAEPROTOTYPE;
-#else
- errno = EPROTOTYPE;
-#endif
- log_error(LOG_LEVEL_ERROR, "hostname %s resolves to unknown address type.", host);
- return(INADDR_NONE);
- }
- memcpy(
- (char *) &inaddr.sin_addr,
- (char *) hostp->h_addr,
- sizeof(inaddr.sin_addr)
- );
- }
- return(inaddr.sin_addr.s_addr);
-
-}
-
-
-/*
- Local Variables:
- tab-width: 3
- end:
-*/
projects / privoxy.git / blobdiff