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Moving mdns stuff

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Ron Pedde 2004-03-29 17:44:44 +00:00
parent a551776cf0
commit 46ac5acdf8
9 changed files with 0 additions and 11237 deletions
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src/mdns/Responder.c
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@ -1,926 +0,0 @@
/*
* 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 1.2 2004/03/02 00:03:37 rpedde
Merge new rendezvous code
Revision 1.16 2003/08/14 02:19:55 cheshire
<rdar://problem/3375491> Split generic ResourceRecord type into two separate types: AuthRecord and CacheRecord
Revision 1.15 2003/08/12 19:56:26 cheshire
Update to APSL 2.0
Revision 1.14 2003/08/06 18:20:51 cheshire
Makefile cleanup
Revision 1.13 2003/07/23 00:00:04 cheshire
Add comments
Revision 1.12 2003/07/15 01:55:16 cheshire
<rdar://problem/3315777> Need to implement service registration with subtypes
Revision 1.11 2003/07/14 18:11:54 cheshire
Fix stricter compiler warnings
Revision 1.10 2003/07/10 20:27:31 cheshire
<rdar://problem/3318717> mDNSResponder Posix version is missing a 'b' in the getopt option string
Revision 1.9 2003/07/02 21:19:59 cheshire
<rdar://problem/3313413> Update copyright notices, etc., in source code comments
Revision 1.8 2003/06/18 05:48:41 cheshire
Fix warnings
Revision 1.7 2003/05/06 00:00:50 cheshire
<rdar://problem/3248914> Rationalize naming of domainname manipulation functions
Revision 1.6 2003/03/08 00:35:56 cheshire
Switched to using new "mDNS_Execute" model (see "mDNSCore/Implementer Notes.txt")
Revision 1.5 2003/02/20 06:48:36 cheshire
Bug #: 3169535 Xserve RAID needs to do interface-specific registrations
Reviewed by: Josh Graessley, Bob Bradley
Revision 1.4 2003/01/28 03:07:46 cheshire
Add extra parameter to mDNS_RenameAndReregisterService(),
and add support for specifying a domain other than dot-local.
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
*/
#include "mDNSClientAPI.h"// Defines the interface to the client layer above
#include "mDNSPosix.h" // Defines the specific types needed to run mDNS on this platform
#include <assert.h>
#include <stdio.h> // For printf()
#include <stdlib.h> // For exit() etc.
#include <string.h> // For strlen() etc.
#include <unistd.h> // For select()
#include <errno.h> // For errno, EINTR
#include <signal.h>
#include <fcntl.h>
#if COMPILER_LIKES_PRAGMA_MARK
#pragma mark ***** Globals
#endif
static mDNS mDNSStorage; // mDNS core uses this to store its globals
static mDNS_PlatformSupport PlatformStorage; // Stores this platform's globals
static const char *gProgramName = "mDNSResponderPosix";
#if COMPILER_LIKES_PRAGMA_MARK
#pragma mark ***** Signals
#endif
static volatile mDNSBool gReceivedSigUsr1;
static volatile mDNSBool gReceivedSigHup;
static volatile mDNSBool gStopNow;
// We support 4 signals.
//
// o SIGUSR1 toggles verbose mode on and off in debug builds
// o SIGHUP triggers the program to re-read its preferences.
// o SIGINT causes an orderly shutdown of the program.
// o SIGQUIT causes a somewhat orderly shutdown (direct but dangerous)
// o SIGKILL kills us dead (easy to implement :-)
//
// There are fatal race conditions in our signal handling, but there's not much
// we can do about them while remaining within the Posix space. Specifically,
// if a signal arrives after we test the globals its sets but before we call
// select, the signal will be dropped. The user will have to send the signal
// again. Unfortunately, Posix does not have a "sigselect" to atomically
// modify the signal mask and start a select.
static void HandleSigUsr1(int sigraised)
// If we get a SIGUSR1 we toggle the state of the
// verbose mode.
{
assert(sigraised == SIGUSR1);
gReceivedSigUsr1 = mDNStrue;
}
static void HandleSigHup(int sigraised)
// A handler for SIGHUP that causes us to break out of the
// main event loop when the user kill 1's us. This has the
// effect of triggered the main loop to deregister the
// current services and re-read the preferences.
{
assert(sigraised == SIGHUP);
gReceivedSigHup = mDNStrue;
}
static void HandleSigInt(int sigraised)
// A handler for SIGINT that causes us to break out of the
// main event loop when the user types ^C. This has the
// effect of quitting the program.
{
assert(sigraised == SIGINT);
if (gMDNSPlatformPosixVerboseLevel > 0) {
fprintf(stderr, "\nSIGINT\n");
}
gStopNow = mDNStrue;
}
static void HandleSigQuit(int sigraised)
// If we get a SIGQUIT the user is desperate and we
// just call mDNS_Close directly. This is definitely
// not safe (because it could reenter mDNS), but
// we presume that the user has already tried the safe
// alternatives.
{
assert(sigraised == SIGQUIT);
if (gMDNSPlatformPosixVerboseLevel > 0) {
fprintf(stderr, "\nSIGQUIT\n");
}
mDNS_Close(&mDNSStorage);
exit(0);
}
#if COMPILER_LIKES_PRAGMA_MARK
#pragma mark ***** Parameter Checking
#endif
static mDNSBool CheckThatRichTextHostNameIsUsable(const char *richTextHostName, mDNSBool printExplanation)
// Checks that richTextHostName is a reasonable host name
// label and, if it isn't and printExplanation is true, prints
// an explanation of why not.
{
mDNSBool result;
domainlabel richLabel;
domainlabel poorLabel;
result = mDNStrue;
if (result && strlen(richTextHostName) > 63) {
if (printExplanation) {
fprintf(stderr,
"%s: Host name is too long (must be 63 characters or less)\n",
gProgramName);
}
result = mDNSfalse;
}
if (result && richTextHostName[0] == 0) {
if (printExplanation) {
fprintf(stderr, "%s: Host name can't be empty\n", gProgramName);
}
result = mDNSfalse;
}
if (result) {
MakeDomainLabelFromLiteralString(&richLabel, richTextHostName);
ConvertUTF8PstringToRFC1034HostLabel(richLabel.c, &poorLabel);
if (poorLabel.c[0] == 0) {
if (printExplanation) {
fprintf(stderr,
"%s: Host name doesn't produce a usable RFC-1034 name\n",
gProgramName);
}
result = mDNSfalse;
}
}
return result;
}
static mDNSBool CheckThatServiceTypeIsUsable(const char *serviceType, mDNSBool printExplanation)
// Checks that serviceType is a reasonable service type
// label and, if it isn't and printExplanation is true, prints
// an explanation of why not.
{
mDNSBool result;
result = mDNStrue;
if (result && strlen(serviceType) > 63) {
if (printExplanation) {
fprintf(stderr,
"%s: Service type is too long (must be 63 characters or less)\n",
gProgramName);
}
result = mDNSfalse;
}
if (result && serviceType[0] == 0) {
if (printExplanation) {
fprintf(stderr,
"%s: Service type can't be empty\n",
gProgramName);
}
result = mDNSfalse;
}
return result;
}
static mDNSBool CheckThatServiceTextIsUsable(const char *serviceText, mDNSBool printExplanation,
mDNSu8 *pStringList, mDNSu16 *pStringListLen)
// Checks that serviceText is a reasonable service text record
// and, if it isn't and printExplanation is true, prints
// an explanation of why not. Also parse the text into
// the packed PString buffer denoted by pStringList and
// return the length of that buffer in *pStringListLen.
// Note that this routine assumes that the buffer is
// sizeof(RDataBody) bytes long.
{
mDNSBool result;
size_t serviceTextLen;
// Note that parsing a C string into a PString list always
// expands the data by one character, so the following
// compare is ">=", not ">". Here's the logic:
//
// #1 For a string with not ^A's, the PString length is one
// greater than the C string length because we add a length
// byte.
// #2 For every regular (not ^A) character you add to the C
// string, you add a regular character to the PString list.
// This does not affect the equivalence stated in #1.
// #3 For every ^A you add to the C string, you add a length
// byte to the PString list but you also eliminate the ^A,
// which again does not affect the equivalence stated in #1.
result = mDNStrue;
serviceTextLen = strlen(serviceText);
if (result && strlen(serviceText) >= sizeof(RDataBody)) {
if (printExplanation) {
fprintf(stderr,
"%s: Service text record is too long (must be less than %d characters)\n",
gProgramName,
(int) sizeof(RDataBody) );
}
result = mDNSfalse;
}
// Now break the string up into PStrings delimited by ^A.
// We know the data will fit so we can ignore buffer overrun concerns.
// However, we still have to treat runs long than 255 characters as
// an error.
if (result) {
int lastPStringOffset;
int i;
int thisPStringLen;
// This algorithm is a little tricky. We start by copying
// the string directly into the output buffer, shifted up by
// one byte. We then fill in the first byte with a ^A.
// We then walk backwards through the buffer and, for each
// ^A that we find, we replace it with the difference between
// its offset and the offset of the last ^A that we found
// (ie lastPStringOffset).
memcpy(&pStringList[1], serviceText, serviceTextLen);
pStringList[0] = 1;
lastPStringOffset = serviceTextLen + 1;
for (i = serviceTextLen; i >= 0; i--) {
if ( pStringList[i] == 1 ) {
thisPStringLen = (lastPStringOffset - i - 1);
assert(thisPStringLen >= 0);
if (thisPStringLen > 255) {
result = mDNSfalse;
if (printExplanation) {
fprintf(stderr,
"%s: Each component of the service text record must be 255 characters or less\n",
gProgramName);
}
break;
} else {
pStringList[i] = thisPStringLen;
lastPStringOffset = i;
}
}
}
*pStringListLen = serviceTextLen + 1;
}
return result;
}
static mDNSBool CheckThatPortNumberIsUsable(long portNumber, mDNSBool printExplanation)
// Checks that portNumber is a reasonable port number
// and, if it isn't and printExplanation is true, prints
// an explanation of why not.
{
mDNSBool result;
result = mDNStrue;
if (result && (portNumber <= 0 || portNumber > 65535)) {
if (printExplanation) {
fprintf(stderr,
"%s: Port number specified by -p must be in range 1..65535\n",
gProgramName);
}
result = mDNSfalse;
}
return result;
}
#if COMPILER_LIKES_PRAGMA_MARK
#pragma mark ***** Command Line Arguments
#endif
static const char kDefaultPIDFile[] = "/var/run/mDNSResponder.pid";
static const char kDefaultServiceType[] = "_afpovertcp._tcp.";
static const char kDefaultServiceDomain[] = "local.";
enum {
kDefaultPortNumber = 548
};
static void PrintUsage()
{
fprintf(stderr,
"Usage: %s [-v level ] [-r] [-n name] [-t type] [-d domain] [-x TXT] [-p port] [-f file] [-b] [-P pidfile]\n",
gProgramName);
fprintf(stderr, " -v verbose mode, level is a number from 0 to 2\n");
fprintf(stderr, " 0 = no debugging info (default)\n");
fprintf(stderr, " 1 = standard debugging info\n");
fprintf(stderr, " 2 = intense debugging info\n");
fprintf(stderr, " can be cycled kill -USR1\n");
fprintf(stderr, " -r also bind to port 53 (port 5353 is always bound)\n");
fprintf(stderr, " -n uses 'name' as the host name (default is none)\n");
fprintf(stderr, " -t uses 'type' as the service type (default is '%s')\n", kDefaultServiceType);
fprintf(stderr, " -d uses 'domain' as the service domain (default is '%s')\n", kDefaultServiceDomain);
fprintf(stderr, " -x uses 'TXT' as the service TXT record (default is empty)\n");
fprintf(stderr, " -p uses 'port' as the port number (default is '%d')\n", kDefaultPortNumber);
fprintf(stderr, " -f reads a service list from 'file'\n");
fprintf(stderr, " -b forces daemon (background) mode\n");
fprintf(stderr, " -P uses 'pidfile' as the PID file\n");
fprintf(stderr, " (default is '%s')\n", kDefaultPIDFile);
fprintf(stderr, " only meaningful if -b also specified\n");
}
static mDNSBool gAvoidPort53 = mDNStrue;
static const char *gRichTextHostName = "";
static const char *gServiceType = kDefaultServiceType;
static const char *gServiceDomain = kDefaultServiceDomain;
static mDNSu8 gServiceText[sizeof(RDataBody)];
static mDNSu16 gServiceTextLen = 0;
static int gPortNumber = kDefaultPortNumber;
static const char *gServiceFile = "";
static mDNSBool gDaemon = mDNSfalse;
static const char *gPIDFile = kDefaultPIDFile;
static void ParseArguments(int argc, char **argv)
// Parses our command line arguments into the global variables
// listed above.
{
int ch;
// Set gProgramName to the last path component of argv[0]
gProgramName = strrchr(argv[0], '/');
if (gProgramName == NULL) {
gProgramName = argv[0];
} else {
gProgramName += 1;
}
// Parse command line options using getopt.
do {
ch = getopt(argc, argv, "v:rn:t:d:x:p:f:dPb");
if (ch != -1) {
switch (ch) {
case 'v':
gMDNSPlatformPosixVerboseLevel = atoi(optarg);
if (gMDNSPlatformPosixVerboseLevel < 0 || gMDNSPlatformPosixVerboseLevel > 2) {
fprintf(stderr,
"%s: Verbose mode must be in the range 0..2\n",
gProgramName);
exit(1);
}
break;
case 'r':
gAvoidPort53 = mDNSfalse;
break;
case 'n':
gRichTextHostName = optarg;
if ( ! CheckThatRichTextHostNameIsUsable(gRichTextHostName, mDNStrue) ) {
exit(1);
}
break;
case 't':
gServiceType = optarg;
if ( ! CheckThatServiceTypeIsUsable(gServiceType, mDNStrue) ) {
exit(1);
}
break;
case 'd':
gServiceDomain = optarg;
break;
case 'x':
if ( ! CheckThatServiceTextIsUsable(optarg, mDNStrue, gServiceText, &gServiceTextLen) ) {
exit(1);
}
break;
case 'p':
gPortNumber = atol(optarg);
if ( ! CheckThatPortNumberIsUsable(gPortNumber, mDNStrue) ) {
exit(1);
}
break;
case 'f':
gServiceFile = optarg;
break;
case 'b':
gDaemon = mDNStrue;
break;
case 'P':
gPIDFile = optarg;
break;
case '?':
default:
PrintUsage();
exit(1);
break;
}
}
} while (ch != -1);
// Check for any left over command line arguments.
if (optind != argc) {
PrintUsage();
fprintf(stderr, "%s: Unexpected argument '%s'\n", gProgramName, argv[optind]);
exit(1);
}
// Check for inconsistency between the arguments.
if ( (gRichTextHostName[0] == 0) && (gServiceFile[0] == 0) ) {
PrintUsage();
fprintf(stderr, "%s: You must specify a service to register (-n) or a service file (-f).\n", gProgramName);
exit(1);
}
}
#if COMPILER_LIKES_PRAGMA_MARK
#pragma mark ***** Registration
#endif
typedef struct PosixService PosixService;
struct PosixService {
ServiceRecordSet coreServ;
PosixService *next;
int serviceID;
};
static PosixService *gServiceList = NULL;
static void RegistrationCallback(mDNS *const m, ServiceRecordSet *const thisRegistration, mStatus status)
// mDNS core calls this routine to tell us about the status of
// our registration. The appropriate action to take depends
// entirely on the value of status.
{
switch (status) {
case mStatus_NoError:
debugf("Callback: %##s Name Registered", thisRegistration->RR_SRV.resrec.name.c);
// Do nothing; our name was successfully registered. We may
// get more call backs in the future.
break;
case mStatus_NameConflict:
debugf("Callback: %##s Name Conflict", thisRegistration->RR_SRV.resrec.name.c);
// In the event of a conflict, this sample RegistrationCallback
// just calls mDNS_RenameAndReregisterService to automatically
// pick a new unique name for the service. For a device such as a
// printer, this may be appropriate. For a device with a user
// interface, and a screen, and a keyboard, the appropriate response
// may be to prompt the user and ask them to choose a new name for
// the service.
//
// Also, what do we do if mDNS_RenameAndReregisterService returns an
// error. Right now I have no place to send that error to.
status = mDNS_RenameAndReregisterService(m, thisRegistration, mDNSNULL);
assert(status == mStatus_NoError);
break;
case mStatus_MemFree:
debugf("Callback: %##s Memory Free", thisRegistration->RR_SRV.resrec.name.c);
// When debugging is enabled, make sure that thisRegistration
// is not on our gServiceList.
#if !defined(NDEBUG)
{
PosixService *cursor;
cursor = gServiceList;
while (cursor != NULL) {
assert(&cursor->coreServ != thisRegistration);
cursor = cursor->next;
}
}
#endif
free(thisRegistration);
break;
default:
debugf("Callback: %##s Unknown Status %d", thisRegistration->RR_SRV.resrec.name.c, status);
break;
}
}
static int gServiceID = 0;
static mStatus RegisterOneService(const char * richTextHostName,
const char * serviceType,
const char * serviceDomain,
const mDNSu8 text[],
mDNSu16 textLen,
long portNumber)
{
mStatus status;
PosixService * thisServ;
mDNSOpaque16 port;
domainlabel name;
domainname type;
domainname domain;
status = mStatus_NoError;
thisServ = (PosixService *) malloc(sizeof(*thisServ));
if (thisServ == NULL) {
status = mStatus_NoMemoryErr;
}
if (status == mStatus_NoError) {
MakeDomainLabelFromLiteralString(&name, richTextHostName);
MakeDomainNameFromDNSNameString(&type, serviceType);
MakeDomainNameFromDNSNameString(&domain, serviceDomain);
port.b[0] = (portNumber >> 8) & 0x0FF;
port.b[1] = (portNumber >> 0) & 0x0FF;;
status = mDNS_RegisterService(&mDNSStorage, &thisServ->coreServ,
&name, &type, &domain, // Name, type, domain
NULL, port, // Host and port
text, textLen, // TXT data, length
NULL, 0, // Subtypes
mDNSInterface_Any, // Interace ID
RegistrationCallback, thisServ); // Callback and context
}
if (status == mStatus_NoError) {
thisServ->serviceID = gServiceID;
gServiceID += 1;
thisServ->next = gServiceList;
gServiceList = thisServ;
if (gMDNSPlatformPosixVerboseLevel > 0) {
fprintf(stderr,
"%s: Registered service %d, name '%s', type '%s', port %ld\n",
gProgramName,
thisServ->serviceID,
richTextHostName,
serviceType,
portNumber);
}
} else {
if (thisServ != NULL) {
free(thisServ);
}
}
return status;
}
static mDNSBool ReadALine(char *buf, size_t bufSize, FILE *fp)
{
mDNSBool good;
size_t len;
good = (fgets(buf, bufSize, fp) != NULL);
if (good) {
len = strlen(buf);
good = (len > 0 && buf[len - 1] == '\n');
}
if (good) {
buf[len - 1] = 0;
}
return good;
}
static mStatus RegisterServicesInFile(const char *filePath)
{
mStatus status;
FILE * fp;
int junk;
mDNSBool good;
int ch;
char name[256];
char type[256];
const char *dom = kDefaultServiceDomain;
char rawText[1024];
mDNSu8 text[sizeof(RDataBody)];
mDNSu16 textLen;
char port[256];
status = mStatus_NoError;
fp = fopen(filePath, "r");
if (fp == NULL) {
status = mStatus_UnknownErr;
}
if (status == mStatus_NoError) {
good = mDNStrue;
do {
// Skip over any blank lines.
do {
ch = fgetc(fp);
} while ( ch == '\n' || ch == '\r' );
if (ch != EOF) {
good = (ungetc(ch, fp) == ch);
}
// Read three lines, check them for validity, and register the service.
if ( good && ! feof(fp) ) {
good = ReadALine(name, sizeof(name), fp);
if (good) {
good = ReadALine(type, sizeof(type), fp);
}
if (good) {
char *p = type;
while (*p && *p != ' ') p++;
if (*p) {
*p = 0;
dom = p+1;
}
}
if (good) {
good = ReadALine(rawText, sizeof(rawText), fp);
}
if (good) {
good = ReadALine(port, sizeof(port), fp);
}
if (good) {
good = CheckThatRichTextHostNameIsUsable(name, mDNSfalse)
&& CheckThatServiceTypeIsUsable(type, mDNSfalse)
&& CheckThatServiceTextIsUsable(rawText, mDNSfalse, text, &textLen)
&& CheckThatPortNumberIsUsable(atol(port), mDNSfalse);
}
if (good) {
status = RegisterOneService(name, type, dom, text, textLen, atol(port));
if (status != mStatus_NoError) {
fprintf(stderr,
"%s: Failed to register service, name = %s, type = %s, port = %s\n",
gProgramName,
name,
type,
port);
status = mStatus_NoError; // keep reading
}
}
}
} while (good && !feof(fp));
if ( ! good ) {
fprintf(stderr, "%s: Error reading service file %s\n", gProgramName, gServiceFile);
}
}
if (fp != NULL) {
junk = fclose(fp);
assert(junk == 0);
}
return status;
}
static mStatus RegisterOurServices(void)
{
mStatus status;
status = mStatus_NoError;
if (gRichTextHostName[0] != 0) {
status = RegisterOneService(gRichTextHostName,
gServiceType,
gServiceDomain,
gServiceText, gServiceTextLen,
gPortNumber);
}
if (status == mStatus_NoError && gServiceFile[0] != 0) {
status = RegisterServicesInFile(gServiceFile);
}
return status;
}
static void DeregisterOurServices(void)
{
PosixService *thisServ;
int thisServID;
while (gServiceList != NULL) {
thisServ = gServiceList;
gServiceList = thisServ->next;
thisServID = thisServ->serviceID;
mDNS_DeregisterService(&mDNSStorage, &thisServ->coreServ);
if (gMDNSPlatformPosixVerboseLevel > 0) {
fprintf(stderr,
"%s: Deregistered service %d\n",
gProgramName,
thisServ->serviceID);
}
}
}
#if COMPILER_LIKES_PRAGMA_MARK
#pragma mark **** Main
#endif
#ifdef NOT_HAVE_DAEMON
// The version of Solaris that I tested on didn't have the daemon
// call. This implementation was basically stolen from the
// Mac OS X standard C library.
static int daemon(int nochdir, int noclose)
{
int fd;
switch (fork()) {
case -1:
return (-1);
case 0:
break;
default:
_exit(0);
}
if (setsid() == -1)
return (-1);
if (!nochdir)
(void)chdir("/");
if (!noclose && (fd = _open("/dev/null", O_RDWR, 0)) != -1) {
(void)dup2(fd, STDIN_FILENO);
(void)dup2(fd, STDOUT_FILENO);
(void)dup2(fd, STDERR_FILENO);
if (fd > 2)
(void)_close(fd);
}
return (0);
}
#endif /* NOT_HAVE_DAEMON */
int main(int argc, char **argv)
{
mStatus status;
int result;
// Parse our command line arguments. This won't come back if there's an error.
ParseArguments(argc, argv);
// If we're told to run as a daemon, then do that straight away.
// Note that we don't treat the inability to create our PID
// file as an error. Also note that we assign getpid to a long
// because printf has no format specified for pid_t.
if (gDaemon) {
if (gMDNSPlatformPosixVerboseLevel > 0) {
fprintf(stderr, "%s: Starting in daemon mode\n", gProgramName);
}
daemon(0,0);
{
FILE *fp;
int junk;
fp = fopen(gPIDFile, "w");
if (fp != NULL) {
fprintf(fp, "%ld\n", (long) getpid());
junk = fclose(fp);
assert(junk == 0);
}
}
} else {
if (gMDNSPlatformPosixVerboseLevel > 0) {
fprintf(stderr, "%s: Starting in foreground mode, PID %ld\n", gProgramName, (long) getpid());
}
}
status = mDNS_Init(&mDNSStorage, &PlatformStorage,
mDNS_Init_NoCache, mDNS_Init_ZeroCacheSize,
mDNS_Init_AdvertiseLocalAddresses,
mDNS_Init_NoInitCallback, mDNS_Init_NoInitCallbackContext);
if (status != mStatus_NoError) return(2);
status = RegisterOurServices();
if (status != mStatus_NoError) return(2);
signal(SIGHUP, HandleSigHup); // SIGHUP has to be sent by kill -HUP <pid>
signal(SIGINT, HandleSigInt); // SIGINT is what you get for a Ctrl-C
signal(SIGQUIT, HandleSigQuit); // SIGQUIT is what you get for a Ctrl-\ (indeed)
signal(SIGUSR1, HandleSigUsr1); // SIGUSR1 has to be sent by kill -USR1 <pid>
while (!gStopNow)
{
int nfds = 0;
fd_set readfds;
struct timeval timeout;
int result;
// 1. Set up the fd_set as usual here.
// This example client has no file descriptors of its own,
// but a real application would call FD_SET to add them to the set here
FD_ZERO(&readfds);
// 2. Set up the timeout.
// This example client has no other work it needs to be doing,
// so we set an effectively infinite timeout
timeout.tv_sec = 0x3FFFFFFF;
timeout.tv_usec = 0;
// 3. Give the mDNSPosix layer a chance to add its information to the fd_set and timeout
mDNSPosixGetFDSet(&mDNSStorage, &nfds, &readfds, &timeout);
// 4. Call select as normal
verbosedebugf("select(%d, %d.%06d)", nfds, timeout.tv_sec, timeout.tv_usec);
result = select(nfds, &readfds, NULL, NULL, &timeout);
if (result < 0)
{
verbosedebugf("select() returned %d errno %d", result, errno);
if (errno != EINTR) gStopNow = mDNStrue;
else
{
if (gReceivedSigUsr1)
{
gReceivedSigUsr1 = mDNSfalse;
gMDNSPlatformPosixVerboseLevel += 1;
if (gMDNSPlatformPosixVerboseLevel > 2)
gMDNSPlatformPosixVerboseLevel = 0;
if ( gMDNSPlatformPosixVerboseLevel > 0 )
fprintf(stderr, "\nVerbose level %d\n", gMDNSPlatformPosixVerboseLevel);
}
if (gReceivedSigHup)
{
if (gMDNSPlatformPosixVerboseLevel > 0)
fprintf(stderr, "\nSIGHUP\n");
gReceivedSigHup = mDNSfalse;
DeregisterOurServices();
status = mDNSPlatformPosixRefreshInterfaceList(&mDNSStorage);
if (status != mStatus_NoError) break;
status = RegisterOurServices();
if (status != mStatus_NoError) break;
}
}
}
else
{
// 5. Call mDNSPosixProcessFDSet to let the mDNSPosix layer do its work
mDNSPosixProcessFDSet(&mDNSStorage, &readfds);
// 6. This example client has no other work it needs to be doing,
// but a real client would do its work here
// ... (do work) ...
}
}
debugf("Exiting");
DeregisterOurServices();
mDNS_Close(&mDNSStorage);
if (status == mStatus_NoError) {
result = 0;
} else {
result = 2;
}
if ( (result != 0) || (gMDNSPlatformPosixVerboseLevel > 0) ) {
fprintf(stderr, "%s: Finished with status %ld, result %d\n", gProgramName, status, result);
}
return result;
}

7031
src/mdns/mDNS.c
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1423
src/mdns/mDNSClientAPI.h
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115
src/mdns/mDNSDebug.h
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@ -1,115 +0,0 @@
/*
* 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 1.2 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

86
src/mdns/mDNSPlatformFunctions.h
View File

@ -1,86 +0,0 @@
/*
* 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 1.2 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

1005
src/mdns/mDNSPosix.c
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File diff suppressed because it is too large Load Diff

98
src/mdns/mDNSPosix.h
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@ -1,98 +0,0 @@
/*
* 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 1.2 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

427
src/mdns/mDNSUNP.c
View File

@ -1,427 +0,0 @@
/*
* 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 1.3 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 */
}

126
src/mdns/mDNSUNP.h
View File

@ -1,126 +0,0 @@
/*
* 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 1.3 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