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Flatten mdns stuff

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This commit is contained in:
Ron Pedde 2004-03-29 17:55:17 +00:00
parent 46ac5acdf8
commit 863346cbb9
9 changed files with 10338 additions and 3 deletions
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6
src/Makefile.am
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@ -13,7 +13,7 @@ DBFILE=db-memory.c
endif
if COND_REND_POSIX
RENDSRC=mdns/mDNS.c mdns/mDNSClientAPI.h mdns/mDNSDebug.h mdns/mDNSPosix.c mdns/mDNSUNP.c rend-posix.c mdns/mDNSPlatformFunctions.h
RENDSRC=mDNS.c mDNSClientAPI.h mDNSDebug.h mDNSPosix.c mDNSUNP.c rend-posix.c mDNSPlatformFunctions.h
endif
if COND_REND_HOWL
@ -30,8 +30,8 @@ mt_daapd_SOURCES = main.c daapd.h rend.h uici.c uici.h webserver.c \
mp3-scanner.h mp3-scanner.c playlist.c playlist.h rend-unix.c rend-unix.h \
lexer.l parser.y $(RENDSRC) strcasestr.c strcasestr.h strsep.c
EXTRA_DIST = mdns/mDNS.c mdns/mDNSClientAPI.h mdns/mDNSDebug.h mdns/mDNSPosix.c \
mdns/mDNSUNP.c mdns/mDNSPlatformFunctions.h mdns/mDNSPosix.h mdns/mDNSUNP.h \
EXTRA_DIST = mDNS.c mDNSClientAPI.h mDNSDebug.h mDNSPosix.c \
mDNSUNP.c mDNSPlatformFunctions.h mDNSPosix.h mDNSUNP.h \
rend-howl.c rend-posix.c rend-osx.c strcasestr.c strsep.c db-memory.c \
db-gdbm.c strcasestr.h redblack.c redblack.h

7034
src/mDNS.c Normal file
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1426
src/mDNSClientAPI.h Normal file
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118
src/mDNSDebug.h Normal file
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@ -0,0 +1,118 @@
/*
* Copyright (c) 2002-2003 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
Change History (most recent first):
$Log$
Revision 1.1 2004/03/29 17:55:17 rpedde
Flatten mdns stuff
Revision 1.2 2004/03/02 00:03:37 rpedde
Merge new rendezvous code
Revision 1.14 2003/08/12 19:56:24 cheshire
Update to APSL 2.0
Revision 1.13 2003/07/02 21:19:46 cheshire
<rdar://problem/3313413> Update copyright notices, etc., in source code comments
Revision 1.12 2003/05/26 03:01:27 cheshire
<rdar://problem/3268904> sprintf/vsprintf-style functions are unsafe; use snprintf/vsnprintf instead
Revision 1.11 2003/05/21 17:48:10 cheshire
Add macro to enable GCC's printf format string checking
Revision 1.10 2003/04/26 02:32:57 cheshire
Add extern void LogMsg(const char *format, ...);
Revision 1.9 2002/09/21 20:44:49 zarzycki
Added APSL info
Revision 1.8 2002/09/19 04:20:43 cheshire
Remove high-ascii characters that confuse some systems
Revision 1.7 2002/09/16 18:41:42 cheshire
Merge in license terms from Quinn's copy, in preparation for Darwin release
*/
#ifndef __mDNSDebug_h
#define __mDNSDebug_h
// Set MDNS_DEBUGMSGS to 0 to optimize debugf() calls out of the compiled code
// Set MDNS_DEBUGMSGS to 1 to generate normal debugging messages
// Set MDNS_DEBUGMSGS to 2 to generate verbose debugging messages
// MDNS_DEBUGMSGS is normally set in the project options (or makefile) but can also be set here if desired
//#define MDNS_DEBUGMSGS 2
// Set MDNS_CHECK_PRINTF_STYLE_FUNCTIONS to 1 to enable extra GCC compiler warnings
// Note: You don't normally want to do this, because it generates a bunch of
// spurious warnings for the following custom extensions implemented by mDNS_vsnprintf:
// warning: `#' flag used with `%s' printf format (for %#s -- pascal string format)
// warning: repeated `#' flag in format (for %##s -- DNS name string format)
// warning: double format, pointer arg (arg 2) (for %.4a, %.16a, %#a -- IP address formats)
#define MDNS_CHECK_PRINTF_STYLE_FUNCTIONS 0
#if MDNS_CHECK_PRINTF_STYLE_FUNCTIONS
#define IS_A_PRINTF_STYLE_FUNCTION(F,A) __attribute__ ((format(printf,F,A)))
#else
#define IS_A_PRINTF_STYLE_FUNCTION(F,A)
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if MDNS_DEBUGMSGS
#define debugf debugf_
extern void debugf_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2);
#else // If debug breaks are off, use a preprocessor trick to optimize those calls out of the code
#if( defined( __GNUC__ ) )
#define debugf( ARGS... ) ((void)0)
#elif( defined( __MWERKS__ ) )
#define debugf( ... )
#else
#define debugf 1 ? ((void)0) : (void)
#endif
#endif
#if MDNS_DEBUGMSGS > 1
#define verbosedebugf verbosedebugf_
extern void verbosedebugf_(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2);
#else
#if( defined( __GNUC__ ) )
#define verbosedebugf( ARGS... ) ((void)0)
#elif( defined( __MWERKS__ ) )
#define verbosedebugf( ... )
#else
#define verbosedebugf 1 ? ((void)0) : (void)
#endif
#endif
// LogMsg is used even in shipping code, to write truly serious error messages to syslog (or equivalent)
extern void LogMsg(const char *format, ...) IS_A_PRINTF_STYLE_FUNCTION(1,2);
#ifdef __cplusplus
}
#endif
#endif

89
src/mDNSPlatformFunctions.h Normal file
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@ -0,0 +1,89 @@
/*
* Copyright (c) 2002-2003 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
Change History (most recent first):
$Log$
Revision 1.1 2004/03/29 17:55:17 rpedde
Flatten mdns stuff
Revision 1.2 2004/03/02 00:03:37 rpedde
Merge new rendezvous code
Revision 1.22.2.1 2003/12/05 00:03:34 cheshire
<rdar://problem/3487869> Use buffer size MAX_ESCAPED_DOMAIN_NAME instead of 256
Revision 1.22 2003/08/18 22:53:37 cheshire
<rdar://problem/3382647> mDNSResponder divide by zero in mDNSPlatformTimeNow()
Revision 1.21 2003/08/15 20:16:57 cheshire
Update comment for <rdar://problem/3366590> mDNSResponder takes too much RPRVT
Revision 1.20 2003/08/12 19:56:24 cheshire
Update to APSL 2.0
Revision 1.19 2003/08/05 22:20:15 cheshire
<rdar://problem/3330324> Need to check IP TTL on responses
Revision 1.18 2003/07/22 23:57:20 cheshire
Move platform-layer function prototypes from mDNSClientAPI.h to mDNSPlatformFunctions.h where they belong
Revision 1.17 2003/07/19 03:15:15 cheshire
Add generic MemAllocate/MemFree prototypes to mDNSPlatformFunctions.h,
and add the obvious trivial implementations to each platform support layer
Revision 1.16 2003/07/02 21:19:46 cheshire
<rdar://problem/3313413> Update copyright notices, etc., in source code comments
Revision 1.15 2003/05/23 22:39:45 cheshire
<rdar://problem/3268151> Need to adjust maximum packet size for IPv6
Revision 1.14 2003/04/28 21:54:57 cheshire
Fix compiler warning
Revision 1.13 2003/03/15 04:40:36 cheshire
Change type called "mDNSOpaqueID" to the more descriptive name "mDNSInterfaceID"
Revision 1.12 2003/02/21 01:54:08 cheshire
Bug #: 3099194 mDNSResponder needs performance improvements
Switched to using new "mDNS_Execute" model (see "Implementer Notes.txt")
Revision 1.11 2002/12/23 22:13:29 jgraessl
Reviewed by: Stuart Cheshire
Initial IPv6 support for mDNSResponder.
Revision 1.10 2002/09/21 20:44:49 zarzycki
Added APSL info
Revision 1.9 2002/09/19 04:20:43 cheshire
Remove high-ascii characters that confuse some systems
Revision 1.8 2002/09/16 23:12:14 cheshire
Minor code tidying
Revision 1.7 2002/09/16 18:41:42 cheshire
Merge in license terms from Quinn's copy, in preparation for Darwin release
*/
// Note: All moved to mDNSClientAPI.h

1008
src/mDNSPosix.c Normal file
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101
src/mDNSPosix.h Normal file
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@ -0,0 +1,101 @@
/*
* Copyright (c) 2002-2003 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
Change History (most recent first):
$Log$
Revision 1.1 2004/03/29 17:55:17 rpedde
Flatten mdns stuff
Revision 1.2 2004/03/02 00:03:37 rpedde
Merge new rendezvous code
Revision 1.9 2003/10/30 19:25:19 cheshire
Fix warning on certain compilers
Revision 1.8 2003/08/12 19:56:26 cheshire
Update to APSL 2.0
Revision 1.7 2003/07/02 21:19:59 cheshire
<rdar://problem/3313413> Update copyright notices, etc., in source code comments
Revision 1.6 2003/03/13 03:46:21 cheshire
Fixes to make the code build on Linux
Revision 1.5 2003/03/08 00:35:56 cheshire
Switched to using new "mDNS_Execute" model (see "mDNSCore/Implementer Notes.txt")
Revision 1.4 2002/12/23 22:13:31 jgraessl
Reviewed by: Stuart Cheshire
Initial IPv6 support for mDNSResponder.
Revision 1.3 2002/09/21 20:44:53 zarzycki
Added APSL info
Revision 1.2 2002/09/19 04:20:44 cheshire
Remove high-ascii characters that confuse some systems
Revision 1.1 2002/09/17 06:24:34 cheshire
First checkin
*/
#ifndef __mDNSPlatformPosix_h
#define __mDNSPlatformPosix_h
#include <sys/time.h>
#if HAVE_IPV6
#define mDNSIPv6Support 1
#endif
#ifdef __cplusplus
extern "C" {
#endif
// This is a global because debugf_() needs to be able to check its value
extern int gMDNSPlatformPosixVerboseLevel;
struct mDNS_PlatformSupport_struct
{
// No additional data required for Posix at this time
long dummy[1]; // Some compilers don't like empty structures
};
extern mStatus mDNSPlatformPosixRefreshInterfaceList(mDNS *const m);
// See comment in implementation.
// Call mDNSPosixGetFDSet before calling select(), to update the parameters
// as may be necessary to meet the needs of the mDNSCore code.
// The timeout pointer MUST NOT be NULL.
// Set timeout->tv_sec to 0x3FFFFFFF if you want to have effectively no timeout
// After calling mDNSPosixGetFDSet(), call select(nfds, &readfds, NULL, NULL, &timeout); as usual
// After select() returns, call mDNSPosixProcessFDSet() to let mDNSCore do its work
extern void mDNSPosixGetFDSet(mDNS *const m, int *nfds, fd_set *readfds, struct timeval *timeout);
extern void mDNSPosixProcessFDSet(mDNS *const m, fd_set *readfds);
#ifdef __cplusplus
}
#endif
#endif

430
src/mDNSUNP.c Normal file
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@ -0,0 +1,430 @@
/*
* Copyright (c) 2002-2003 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
Change History (most recent first):
$Log$
Revision 1.1 2004/03/29 17:55:17 rpedde
Flatten mdns stuff
Revision 1.3 2004/03/02 00:03:37 rpedde
Merge new rendezvous code
Revision 1.12 2003/09/02 20:47:13 cheshire
Fix signed/unsigned warning
Revision 1.11 2003/08/12 19:56:26 cheshire
Update to APSL 2.0
Revision 1.10 2003/08/06 18:20:51 cheshire
Makefile cleanup
Revision 1.9 2003/07/14 18:11:54 cheshire
Fix stricter compiler warnings
Revision 1.8 2003/07/02 21:19:59 cheshire
<rdar://problem/3313413> Update copyright notices, etc., in source code comments
Revision 1.7 2003/03/20 21:10:31 cheshire
Fixes done at IETF 56 to make mDNSProxyResponderPosix run on Solaris
Revision 1.6 2003/03/13 03:46:21 cheshire
Fixes to make the code build on Linux
Revision 1.5 2003/02/07 03:02:02 cheshire
Submitted by: Mitsutaka Watanabe
The code saying "index += 1;" was effectively making up random interface index values.
The right way to find the correct interface index is if_nametoindex();
Revision 1.4 2002/12/23 22:13:31 jgraessl
Reviewed by: Stuart Cheshire
Initial IPv6 support for mDNSResponder.
Revision 1.3 2002/09/21 20:44:53 zarzycki
Added APSL info
Revision 1.2 2002/09/19 04:20:44 cheshire
Remove high-ascii characters that confuse some systems
Revision 1.1 2002/09/17 06:24:34 cheshire
First checkin
*/
#include "mDNSUNP.h"
#include <errno.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <sys/uio.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <stdio.h>
/* Solaris defined SIOCGIFCONF etc in <sys/sockio.h> but
other platforms don't even have that include file. So,
if we haven't yet got a definition, let's try to find
<sys/sockio.h>.
*/
#ifndef SIOCGIFCONF
#include <sys/sockio.h>
#endif
/* sockaddr_dl is only referenced if we're using IP_RECVIF,
so only include the header in that case.
*/
#ifdef IP_RECVIF
#include <net/if_dl.h>
#endif
struct ifi_info *get_ifi_info(int family, int doaliases)
{
int junk;
struct ifi_info *ifi, *ifihead, **ifipnext;
int sockfd, len, lastlen, flags, myflags;
char *ptr, *buf, lastname[IFNAMSIZ], *cptr;
struct ifconf ifc;
struct ifreq *ifr, ifrcopy;
struct sockaddr_in *sinptr;
#if defined(AF_INET6) && defined(HAVE_IPV6)
struct sockaddr_in6 *sinptr6;
#endif
sockfd = -1;
buf = NULL;
ifihead = NULL;
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd < 0) {
goto gotError;
}
lastlen = 0;
len = 100 * sizeof(struct ifreq); /* initial buffer size guess */
for ( ; ; ) {
buf = malloc(len);
if (buf == NULL) {
goto gotError;
}
ifc.ifc_len = len;
ifc.ifc_buf = buf;
if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
if (errno != EINVAL || lastlen != 0) {
goto gotError;
}
} else {
if (ifc.ifc_len == lastlen)
break; /* success, len has not changed */
lastlen = ifc.ifc_len;
}
len += 10 * sizeof(struct ifreq); /* increment */
free(buf);
}
ifihead = NULL;
ifipnext = &ifihead;
lastname[0] = 0;
/* end get_ifi_info1 */
/* include get_ifi_info2 */
for (ptr = buf; ptr < buf + ifc.ifc_len; ) {
ifr = (struct ifreq *) ptr;
len = GET_SA_LEN(ifr->ifr_addr);
ptr += sizeof(ifr->ifr_name) + len; /* for next one in buffer */
// fprintf(stderr, "intf %d name=%s AF=%d\n", index, ifr->ifr_name, ifr->ifr_addr.sa_family);
if (ifr->ifr_addr.sa_family != family)
continue; /* ignore if not desired address family */
myflags = 0;
if ( (cptr = strchr(ifr->ifr_name, ':')) != NULL)
*cptr = 0; /* replace colon will null */
if (strncmp(lastname, ifr->ifr_name, IFNAMSIZ) == 0) {
if (doaliases == 0)
continue; /* already processed this interface */
myflags = IFI_ALIAS;
}
memcpy(lastname, ifr->ifr_name, IFNAMSIZ);
ifrcopy = *ifr;
if (ioctl(sockfd, SIOCGIFFLAGS, &ifrcopy) < 0) {
goto gotError;
}
flags = ifrcopy.ifr_flags;
if ((flags & IFF_UP) == 0)
continue; /* ignore if interface not up */
ifi = calloc(1, sizeof(struct ifi_info));
if (ifi == NULL) {
goto gotError;
}
*ifipnext = ifi; /* prev points to this new one */
ifipnext = &ifi->ifi_next; /* pointer to next one goes here */
ifi->ifi_flags = flags; /* IFF_xxx values */
ifi->ifi_myflags = myflags; /* IFI_xxx values */
ifi->ifi_index = if_nametoindex(ifr->ifr_name);
memcpy(ifi->ifi_name, ifr->ifr_name, IFI_NAME);
ifi->ifi_name[IFI_NAME-1] = '\0';
/* end get_ifi_info2 */
/* include get_ifi_info3 */
switch (ifr->ifr_addr.sa_family) {
case AF_INET:
sinptr = (struct sockaddr_in *) &ifr->ifr_addr;
if (ifi->ifi_addr == NULL) {
ifi->ifi_addr = calloc(1, sizeof(struct sockaddr_in));
if (ifi->ifi_addr == NULL) {
goto gotError;
}
memcpy(ifi->ifi_addr, sinptr, sizeof(struct sockaddr_in));
#ifdef SIOCGIFBRDADDR
if (flags & IFF_BROADCAST) {
if (ioctl(sockfd, SIOCGIFBRDADDR, &ifrcopy) < 0) {
goto gotError;
}
sinptr = (struct sockaddr_in *) &ifrcopy.ifr_broadaddr;
ifi->ifi_brdaddr = calloc(1, sizeof(struct sockaddr_in));
if (ifi->ifi_brdaddr == NULL) {
goto gotError;
}
memcpy(ifi->ifi_brdaddr, sinptr, sizeof(struct sockaddr_in));
}
#endif
#ifdef SIOCGIFDSTADDR
if (flags & IFF_POINTOPOINT) {
if (ioctl(sockfd, SIOCGIFDSTADDR, &ifrcopy) < 0) {
goto gotError;
}
sinptr = (struct sockaddr_in *) &ifrcopy.ifr_dstaddr;
ifi->ifi_dstaddr = calloc(1, sizeof(struct sockaddr_in));
if (ifi->ifi_dstaddr == NULL) {
goto gotError;
}
memcpy(ifi->ifi_dstaddr, sinptr, sizeof(struct sockaddr_in));
}
#endif
}
break;
#if defined(AF_INET6) && defined(HAVE_IPV6)
case AF_INET6:
sinptr6 = (struct sockaddr_in6 *) &ifr->ifr_addr;
if (ifi->ifi_addr == NULL) {
ifi->ifi_addr = calloc(1, sizeof(struct sockaddr_in6));
if (ifi->ifi_addr == NULL) {
goto gotError;
}
/* Some platforms (*BSD) inject the prefix in IPv6LL addresses */
/* We need to strip that out */
if (IN6_IS_ADDR_LINKLOCAL(&sinptr6->sin6_addr))
sinptr6->sin6_addr.__u6_addr.__u6_addr16[1] = 0;
memcpy(ifi->ifi_addr, sinptr6, sizeof(struct sockaddr_in6));
}
break;
#endif
default:
break;
}
}
goto done;
gotError:
if (ifihead != NULL) {
free_ifi_info(ifihead);
ifihead = NULL;
}
done:
if (buf != NULL) {
free(buf);
}
if (sockfd != -1) {
junk = close(sockfd);
assert(junk == 0);
}
return(ifihead); /* pointer to first structure in linked list */
}
/* end get_ifi_info3 */
/* include free_ifi_info */
void
free_ifi_info(struct ifi_info *ifihead)
{
struct ifi_info *ifi, *ifinext;
for (ifi = ifihead; ifi != NULL; ifi = ifinext) {
if (ifi->ifi_addr != NULL)
free(ifi->ifi_addr);
if (ifi->ifi_brdaddr != NULL)
free(ifi->ifi_brdaddr);
if (ifi->ifi_dstaddr != NULL)
free(ifi->ifi_dstaddr);
ifinext = ifi->ifi_next; /* can't fetch ifi_next after free() */
free(ifi); /* the ifi_info{} itself */
}
}
/* end free_ifi_info */
ssize_t
recvfrom_flags(int fd, void *ptr, size_t nbytes, int *flagsp,
struct sockaddr *sa, socklen_t *salenptr, struct my_in_pktinfo *pktp)
{
struct msghdr msg;
struct iovec iov[1];
ssize_t n;
#ifdef CMSG_FIRSTHDR
struct cmsghdr *cmptr;
union {
struct cmsghdr cm;
char control[1024];
} control_un;
msg.msg_control = control_un.control;
msg.msg_controllen = sizeof(control_un.control);
msg.msg_flags = 0;
#else
memset(&msg, 0, sizeof(msg)); /* make certain msg_accrightslen = 0 */
#endif /* CMSG_FIRSTHDR */
msg.msg_name = (void *) sa;
msg.msg_namelen = *salenptr;
iov[0].iov_base = ptr;
iov[0].iov_len = nbytes;
msg.msg_iov = iov;
msg.msg_iovlen = 1;
if ( (n = recvmsg(fd, &msg, *flagsp)) < 0)
return(n);
*salenptr = msg.msg_namelen; /* pass back results */
if (pktp) {
/* 0.0.0.0, i/f = -1 */
/* We set the interface to -1 so that the caller can
tell whether we returned a meaningful value or
just some default. Previously this code just
set the value to 0, but I'm concerned that 0
might be a valid interface value.
*/
memset(pktp, 0, sizeof(struct my_in_pktinfo));
pktp->ipi_ifindex = -1;
}
/* end recvfrom_flags1 */
/* include recvfrom_flags2 */
#ifndef CMSG_FIRSTHDR
#warning CMSG_FIRSTHDR not defined. Will not be able to determine destination address, received interface, etc.
*flagsp = 0; /* pass back results */
return(n);
#else
*flagsp = msg.msg_flags; /* pass back results */
if (msg.msg_controllen < (socklen_t)sizeof(struct cmsghdr) ||
(msg.msg_flags & MSG_CTRUNC) || pktp == NULL)
return(n);
for (cmptr = CMSG_FIRSTHDR(&msg); cmptr != NULL;
cmptr = CMSG_NXTHDR(&msg, cmptr)) {
#ifdef IP_PKTINFO
#if in_pktinfo_definition_is_missing
struct in_pktinfo
{
int ipi_ifindex;
struct in_addr ipi_spec_dst;
struct in_addr ipi_addr;
};
#endif
if (cmptr->cmsg_level == IPPROTO_IP &&
cmptr->cmsg_type == IP_PKTINFO) {
struct in_pktinfo *tmp;
struct sockaddr_in *sin = (struct sockaddr_in*)&pktp->ipi_addr;
tmp = (struct in_pktinfo *) CMSG_DATA(cmptr);
sin->sin_family = AF_INET;
sin->sin_addr = tmp->ipi_addr;
sin->sin_port = 0;
pktp->ipi_ifindex = tmp->ipi_ifindex;
continue;
}
#endif
#ifdef IP_RECVDSTADDR
if (cmptr->cmsg_level == IPPROTO_IP &&
cmptr->cmsg_type == IP_RECVDSTADDR) {
struct sockaddr_in *sin = (struct sockaddr_in*)&pktp->ipi_addr;
sin->sin_family = AF_INET;
sin->sin_addr = *(struct in_addr*)CMSG_DATA(cmptr);
sin->sin_port = 0;
continue;
}
#endif
#ifdef IP_RECVIF
if (cmptr->cmsg_level == IPPROTO_IP &&
cmptr->cmsg_type == IP_RECVIF) {
struct sockaddr_dl *sdl = (struct sockaddr_dl *) CMSG_DATA(cmptr);
int nameLen = (sdl->sdl_nlen < IFI_NAME - 1) ? sdl->sdl_nlen : (IFI_NAME - 1);
pktp->ipi_ifindex = sdl->sdl_index;
#ifndef HAVE_BROKEN_RECVIF_NAME
strncpy(pktp->ipi_ifname, sdl->sdl_data, nameLen);
#endif
assert(pktp->ipi_ifname[IFI_NAME - 1] == 0);
// null terminated because of memset above
continue;
}
#endif
#if defined(IPV6_PKTINFO) && defined(HAVE_IPV6)
if (cmptr->cmsg_level == IPPROTO_IPV6 &&
cmptr->cmsg_type == IPV6_PKTINFO) {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6*)&pktp->ipi_addr;
struct in6_pktinfo *ip6_info = (struct in6_pktinfo*)CMSG_DATA(cmptr);
sin6->sin6_family = AF_INET6;
sin6->sin6_len = sizeof(*sin6);
sin6->sin6_addr = ip6_info->ipi6_addr;
sin6->sin6_flowinfo = 0;
sin6->sin6_scope_id = 0;
sin6->sin6_port = 0;
pktp->ipi_ifindex = ip6_info->ipi6_ifindex;
continue;
}
#endif
assert(0); // unknown ancillary data
}
return(n);
#endif /* CMSG_FIRSTHDR */
}

129
src/mDNSUNP.h Normal file
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@ -0,0 +1,129 @@
/*
* Copyright (c) 2002-2003 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
Change History (most recent first):
$Log$
Revision 1.1 2004/03/29 17:55:17 rpedde
Flatten mdns stuff
Revision 1.3 2004/03/16 05:11:18 rpedde
Fix obvious typecast bug
Revision 1.2 2004/03/02 00:03:37 rpedde
Merge new rendezvous code
Revision 1.8 2003/08/12 19:56:26 cheshire
Update to APSL 2.0
Revision 1.7 2003/08/06 18:20:51 cheshire
Makefile cleanup
Revision 1.6 2003/07/02 21:19:59 cheshire
<rdar://problem/3313413> Update copyright notices, etc., in source code comments
Revision 1.5 2003/03/13 03:46:21 cheshire
Fixes to make the code build on Linux
Revision 1.4 2002/12/23 22:13:32 jgraessl
Reviewed by: Stuart Cheshire
Initial IPv6 support for mDNSResponder.
Revision 1.3 2002/09/21 20:44:53 zarzycki
Added APSL info
Revision 1.2 2002/09/19 04:20:44 cheshire
Remove high-ascii characters that confuse some systems
Revision 1.1 2002/09/17 06:24:35 cheshire
First checkin
*/
#ifndef __mDNSUNP_h
#define __mDNSUNP_h
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef NOT_HAVE_SOCKLEN_T
typedef unsigned int socklen_t;
#endif
#if !defined(_SS_MAXSIZE)
#define sockaddr_storage sockaddr
#endif
#ifndef NOT_HAVE_SA_LEN
#define GET_SA_LEN(X) (sizeof(struct sockaddr) > ((struct sockaddr*)&(X))->sa_len ? \
sizeof(struct sockaddr) : ((struct sockaddr*)&(X))->sa_len )
#elif mDNSIPv6Support
#define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : \
((struct sockaddr*)&(X))->sa_family == AF_INET6 ? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr))
#else
#define GET_SA_LEN(X) (((struct sockaddr*)&(X))->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr))
#endif
#define IFI_NAME 16 /* same as IFNAMSIZ in <net/if.h> */
#define IFI_HADDR 8 /* allow for 64-bit EUI-64 in future */
// Renamed from my_in_pktinfo because in_pktinfo is used by Linux.
struct my_in_pktinfo {
struct sockaddr_storage ipi_addr;
int ipi_ifindex; /* received interface index */
char ipi_ifname[IFI_NAME]; /* received interface name */
};
extern ssize_t recvfrom_flags(int fd, void *ptr, size_t nbytes, int *flagsp,
struct sockaddr *sa, socklen_t *salenptr, struct my_in_pktinfo *pktp);
struct ifi_info {
char ifi_name[IFI_NAME]; /* interface name, null terminated */
u_char ifi_haddr[IFI_HADDR]; /* hardware address */
u_short ifi_hlen; /* #bytes in hardware address: 0, 6, 8 */
short ifi_flags; /* IFF_xxx constants from <net/if.h> */
short ifi_myflags; /* our own IFI_xxx flags */
int ifi_index; /* interface index */
struct sockaddr *ifi_addr; /* primary address */
struct sockaddr *ifi_brdaddr;/* broadcast address */
struct sockaddr *ifi_dstaddr;/* destination address */
struct ifi_info *ifi_next; /* next of these structures */
};
#define IFI_ALIAS 1 /* ifi_addr is an alias */
extern struct ifi_info *get_ifi_info(int family, int doaliases);
extern void free_ifi_info(struct ifi_info *);
#ifdef __cplusplus
}
#endif
#endif