/* -*- Mode: C; tab-width: 4 -*-
*
* Copyright (c) 2002-2008 Apple Inc. All rights reserved.
*
* Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
* ("Apple") in consideration of your agreement to the following terms, and your
* use, installation, modification or redistribution of this Apple software
* constitutes acceptance of these terms. If you do not agree with these terms,
* please do not use, install, modify or redistribute this Apple software.
*
* In consideration of your agreement to abide by the following terms, and subject
* to these terms, Apple grants you a personal, non-exclusive license, under Apple's
* copyrights in this original Apple software (the "Apple Software"), to use,
* reproduce, modify and redistribute the Apple Software, with or without
* modifications, in source and/or binary forms; provided that if you redistribute
* the Apple Software in its entirety and without modifications, you must retain
* this notice and the following text and disclaimers in all such redistributions of
* the Apple Software. Neither the name, trademarks, service marks or logos of
* Apple Computer, Inc. may be used to endorse or promote products derived from the
* Apple Software without specific prior written permission from Apple. Except as
* expressly stated in this notice, no other rights or licenses, express or implied,
* are granted by Apple herein, including but not limited to any patent rights that
* may be infringed by your derivative works or by other works in which the Apple
* Software may be incorporated.
*
* The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
* WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
* WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
* COMBINATION WITH YOUR PRODUCTS.
*
* IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
* OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
* (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Formatting notes:
* This code follows the "Whitesmiths style" C indentation rules. Plenty of discussion
* on C indentation can be found on the web, such as <http://www.kafejo.com/komp/1tbs.htm>,
* but for the sake of brevity here I will say just this: Curly braces are not syntactially
* part of an "if" statement; they are the beginning and ending markers of a compound statement;
* therefore common sense dictates that if they are part of a compound statement then they
* should be indented to the same level as everything else in that compound statement.
* Indenting curly braces at the same level as the "if" implies that curly braces are
* part of the "if", which is false. (This is as misleading as people who write "char* x,y;"
* thinking that variables x and y are both of type "char*" -- and anyone who doesn't
* understand why variable y is not of type "char*" just proves the point that poor code
* layout leads people to unfortunate misunderstandings about how the C language really works.)
To build this tool, copy and paste the following into a command line:
OS X:
gcc dns-sd.c -o dns-sd
POSIX systems:
gcc dns-sd.c -o dns-sd -I../mDNSShared -ldns_sd
Windows:
cl dns-sd.c -I../mDNSShared -DNOT_HAVE_GETOPT ws2_32.lib ..\mDNSWindows\DLL\Release\dnssd.lib
(may require that you run a Visual Studio script such as vsvars32.bat first)
*/
// For testing changes to dnssd_clientstub.c, uncomment this line and the code will be compiled
// with an embedded copy of the client stub instead of linking the system library version at runtime.
// This also useful to work around link errors when you're working on an older version of Mac OS X,
// and trying to build a newer version of the "dns-sd" command which uses new API entry points that
// aren't in the system's /usr/lib/libSystem.dylib.
//#define TEST_NEW_CLIENTSTUB 1
// When building mDNSResponder for Mac OS X 10.4 and earlier, /usr/lib/libSystem.dylib is built using its own private
// copy of dnssd_clientstub.c, which is old and doesn't have all the entry points defined in the latest version, so
// when we're building dns-sd.c on Mac OS X 10.4 or earlier, we automatically set TEST_NEW_CLIENTSTUB so that we'll
// embed a copy of the latest dnssd_clientstub.c instead of trying to link to the incomplete version in libSystem.dylib
#if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ <= 1040
#define TEST_NEW_CLIENTSTUB 1
#endif
#include <ctype.h>
#include <stdio.h> // For stdout, stderr
#include <stdlib.h> // For exit()
#include <string.h> // For strlen(), strcpy()
#include <errno.h> // For errno, EINTR
#include <time.h>
#include <sys/types.h> // For u_char
#ifdef _WIN32
#include <winsock2.h>
#include <ws2tcpip.h>
#include <Iphlpapi.h>
#include <process.h>
typedef int pid_t;
#define getpid _getpid
#define strcasecmp _stricmp
#define snprintf _snprintf
static const char kFilePathSep = '\\';
#ifndef HeapEnableTerminationOnCorruption
# define HeapEnableTerminationOnCorruption (HEAP_INFORMATION_CLASS)1
#endif
#if !defined(IFNAMSIZ)
#define IFNAMSIZ 16
#endif
#define if_nametoindex if_nametoindex_win
#define if_indextoname if_indextoname_win
typedef PCHAR (WINAPI * if_indextoname_funcptr_t)(ULONG index, PCHAR name);
typedef ULONG (WINAPI * if_nametoindex_funcptr_t)(PCSTR name);
unsigned if_nametoindex_win(const char *ifname)
{
HMODULE library;
unsigned index = 0;
// Try and load the IP helper library dll
if ((library = LoadLibrary(TEXT("Iphlpapi")) ) != NULL )
{
if_nametoindex_funcptr_t if_nametoindex_funcptr;
// On Vista and above there is a Posix like implementation of if_nametoindex
if ((if_nametoindex_funcptr = (if_nametoindex_funcptr_t) GetProcAddress(library, "if_nametoindex")) != NULL )
{
index = if_nametoindex_funcptr(ifname);
}
FreeLibrary(library);
}
return index;
}
char * if_indextoname_win( unsigned ifindex, char *ifname)
{
HMODULE library;
char * name = NULL;
// Try and load the IP helper library dll
if ((library = LoadLibrary(TEXT("Iphlpapi")) ) != NULL )
{
if_indextoname_funcptr_t if_indextoname_funcptr;
// On Vista and above there is a Posix like implementation of if_indextoname
if ((if_indextoname_funcptr = (if_indextoname_funcptr_t) GetProcAddress(library, "if_indextoname")) != NULL )
{
name = if_indextoname_funcptr(ifindex, ifname);
}
FreeLibrary(library);
}
return name;
}
static size_t _sa_len(const struct sockaddr *addr)
{
if (addr->sa_family == AF_INET) return (sizeof(struct sockaddr_in));
else if (addr->sa_family == AF_INET6) return (sizeof(struct sockaddr_in6));
else return (sizeof(struct sockaddr));
}
# define SA_LEN(addr) (_sa_len(addr))
#else
#include <unistd.h> // For getopt() and optind
#include <netdb.h> // For getaddrinfo()
#include <sys/time.h> // For struct timeval
#include <sys/socket.h> // For AF_INET
#include <netinet/in.h> // For struct sockaddr_in()
#include <arpa/inet.h> // For inet_addr()
#include <net/if.h> // For if_nametoindex()
static const char kFilePathSep = '/';
// #ifndef NOT_HAVE_SA_LEN
// #define SA_LEN(addr) ((addr)->sa_len)
// #else
#define SA_LEN(addr) (((addr)->sa_family == AF_INET6)? sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in))
// #endif
#endif
#if (TEST_NEW_CLIENTSTUB && !defined(__APPLE_API_PRIVATE))
#define __APPLE_API_PRIVATE 1
#endif
// DNSServiceSetDispatchQueue is not supported on 10.6 & prior
#if ! TEST_NEW_CLIENTSTUB && defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ - (__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ % 10) <= 1060)
#undef _DNS_SD_LIBDISPATCH
#endif
#include "dns_sd.h"
#include "ClientCommon.h"
#if TEST_NEW_CLIENTSTUB
#include "../mDNSShared/dnssd_ipc.c"
#include "../mDNSShared/dnssd_clientlib.c"
#include "../mDNSShared/dnssd_clientstub.c"
#endif
// The "+0" is to cope with the case where _DNS_SD_H is defined but empty (e.g. on Mac OS X 10.4 and earlier)
#if _DNS_SD_H+0 >= 116
#define HAS_NAT_PMP_API 1
#define HAS_ADDRINFO_API 1
#else
#define kDNSServiceFlagsReturnIntermediates 0
#endif
//*************************************************************************************************************
// Globals
typedef union { unsigned char b[2]; unsigned short NotAnInteger; } Opaque16;
static int operation;
static uint32_t opinterface = kDNSServiceInterfaceIndexAny;
static DNSServiceRef client = NULL;
static DNSServiceRef client_pa = NULL; // DNSServiceRef for RegisterProxyAddressRecord
static DNSServiceRef sc1, sc2, sc3; // DNSServiceRefs for kDNSServiceFlagsShareConnection testing
static int num_printed;
static char addtest = 0;
static DNSRecordRef record = NULL;
static char myhinfoW[14] = "\002PC\012Windows XP";
static char myhinfoX[ 9] = "\003Mac\004OS X";
static char updatetest[3] = "\002AA";
static char bigNULL[8192]; // 8K is maximum rdata we support
#if _DNS_SD_LIBDISPATCH
dispatch_queue_t main_queue;
dispatch_source_t timer_source;
#endif
// Note: the select() implementation on Windows (Winsock2) fails with any timeout much larger than this
#define LONG_TIME 100000000
static volatile int stopNow = 0;
static volatile int timeOut = LONG_TIME;
#if _DNS_SD_LIBDISPATCH
#define EXIT_IF_LIBDISPATCH_FATAL_ERROR(E) \
if (main_queue && (E) == kDNSServiceErr_ServiceNotRunning) { fprintf(stderr, "Error code %d\n", (E)); exit(0); }
#else
#define EXIT_IF_LIBDISPATCH_FATAL_ERROR(E)
#endif
//*************************************************************************************************************
// Supporting Utility Functions
static uint16_t GetRRType(const char *s)
{
if (!strcasecmp(s, "A" )) return(kDNSServiceType_A);
else if (!strcasecmp(s, "NS" )) return(kDNSServiceType_NS);
else if (!strcasecmp(s, "MD" )) return(kDNSServiceType_MD);
else if (!strcasecmp(s, "MF" )) return(kDNSServiceType_MF);
else if (!strcasecmp(s, "CNAME" )) return(kDNSServiceType_CNAME);
else if (!strcasecmp(s, "SOA" )) return(kDNSServiceType_SOA);
else if (!strcasecmp(s, "MB" )) return(kDNSServiceType_MB);
else if (!strcasecmp(s, "MG" )) return(kDNSServiceType_MG);
else if (!strcasecmp(s, "MR" )) return(kDNSServiceType_MR);
else if (!strcasecmp(s, "NULL" )) return(kDNSServiceType_NULL);
else if (!strcasecmp(s, "WKS" )) return(kDNSServiceType_WKS);
else if (!strcasecmp(s, "PTR" )) return(kDNSServiceType_PTR);
else if (!strcasecmp(s, "HINFO" )) return(kDNSServiceType_HINFO);
else if (!strcasecmp(s, "MINFO" )) return(kDNSServiceType_MINFO);
else if (!strcasecmp(s, "MX" )) return(kDNSServiceType_MX);
else if (!strcasecmp(s, "TXT" )) return(kDNSServiceType_TXT);
else if (!strcasecmp(s, "RP" )) return(kDNSServiceType_RP);
else if (!strcasecmp(s, "AFSDB" )) return(kDNSServiceType_AFSDB);
else if (!strcasecmp(s, "X25" )) return(kDNSServiceType_X25);
else if (!strcasecmp(s, "ISDN" )) return(kDNSServiceType_ISDN);
else if (!strcasecmp(s, "RT" )) return(kDNSServiceType_RT);
else if (!strcasecmp(s, "NSAP" )) return(kDNSServiceType_NSAP);
else if (!strcasecmp(s, "NSAP_PTR")) return(kDNSServiceType_NSAP_PTR);
else if (!strcasecmp(s, "SIG" )) return(kDNSServiceType_SIG);
else if (!strcasecmp(s, "KEY" )) return(kDNSServiceType_KEY);
else if (!strcasecmp(s, "PX" )) return(kDNSServiceType_PX);
else if (!strcasecmp(s, "GPOS" )) return(kDNSServiceType_GPOS);
else if (!strcasecmp(s, "AAAA" )) return(kDNSServiceType_AAAA);
else if (!strcasecmp(s, "LOC" )) return(kDNSServiceType_LOC);
else if (!strcasecmp(s, "NXT" )) return(kDNSServiceType_NXT);
else if (!strcasecmp(s, "EID" )) return(kDNSServiceType_EID);
else if (!strcasecmp(s, "NIMLOC" )) return(kDNSServiceType_NIMLOC);
else if (!strcasecmp(s, "SRV" )) return(kDNSServiceType_SRV);
else if (!strcasecmp(s, "ATMA" )) return(kDNSServiceType_ATMA);
else if (!strcasecmp(s, "NAPTR" )) return(kDNSServiceType_NAPTR);
else if (!strcasecmp(s, "KX" )) return(kDNSServiceType_KX);
else if (!strcasecmp(s, "CERT" )) return(kDNSServiceType_CERT);
else if (!strcasecmp(s, "A6" )) return(kDNSServiceType_A6);
else if (!strcasecmp(s, "DNAME" )) return(kDNSServiceType_DNAME);
else if (!strcasecmp(s, "SINK" )) return(kDNSServiceType_SINK);
else if (!strcasecmp(s, "OPT" )) return(kDNSServiceType_OPT);
else if (!strcasecmp(s, "TKEY" )) return(kDNSServiceType_TKEY);
else if (!strcasecmp(s, "TSIG" )) return(kDNSServiceType_TSIG);
else if (!strcasecmp(s, "IXFR" )) return(kDNSServiceType_IXFR);
else if (!strcasecmp(s, "AXFR" )) return(kDNSServiceType_AXFR);
else if (!strcasecmp(s, "MAILB" )) return(kDNSServiceType_MAILB);
else if (!strcasecmp(s, "MAILA" )) return(kDNSServiceType_MAILA);
else if (!strcasecmp(s, "ANY" )) return(kDNSServiceType_ANY);
else return(atoi(s));
}
#if HAS_NAT_PMP_API | HAS_ADDRINFO_API
static DNSServiceProtocol GetProtocol(const char *s)
{
if (!strcasecmp(s, "v4" )) return(kDNSServiceProtocol_IPv4);
else if (!strcasecmp(s, "v6" )) return(kDNSServiceProtocol_IPv6);
else if (!strcasecmp(s, "v4v6" )) return(kDNSServiceProtocol_IPv4 | kDNSServiceProtocol_IPv6);
else if (!strcasecmp(s, "v6v4" )) return(kDNSServiceProtocol_IPv4 | kDNSServiceProtocol_IPv6);
else if (!strcasecmp(s, "udp" )) return(kDNSServiceProtocol_UDP);
else if (!strcasecmp(s, "tcp" )) return(kDNSServiceProtocol_TCP);
else if (!strcasecmp(s, "udptcp" )) return(kDNSServiceProtocol_UDP | kDNSServiceProtocol_TCP);
else if (!strcasecmp(s, "tcpudp" )) return(kDNSServiceProtocol_UDP | kDNSServiceProtocol_TCP);
else return(atoi(s));
}
#endif
//*************************************************************************************************************
// Sample callback functions for each of the operation types
static void printtimestamp(void)
{
struct tm tm;
int ms;
#ifdef _WIN32
SYSTEMTIME sysTime;
time_t uct = time(NULL);
tm = *localtime(&uct);
GetLocalTime(&sysTime);
ms = sysTime.wMilliseconds;
#else
struct timeval tv;
gettimeofday(&tv, NULL);
localtime_r((time_t*)&tv.tv_sec, &tm);
ms = tv.tv_usec/1000;
#endif
printf("%2d:%02d:%02d.%03d ", tm.tm_hour, tm.tm_min, tm.tm_sec, ms);
}
#define DomainMsg(X) (((X) & kDNSServiceFlagsDefault) ? "(Default)" : \
((X) & kDNSServiceFlagsAdd) ? "Added" : "Removed")
#define MAX_LABELS 128
static void DNSSD_API enum_reply(DNSServiceRef sdref, const DNSServiceFlags flags, uint32_t ifIndex,
DNSServiceErrorType errorCode, const char *replyDomain, void *context)
{
DNSServiceFlags partialflags = flags & ~(kDNSServiceFlagsMoreComing | kDNSServiceFlagsAdd | kDNSServiceFlagsDefault);
int labels = 0, depth = 0, i, initial = 0;
char text[64];
const char *label[MAX_LABELS];
(void)sdref; // Unused
(void)ifIndex; // Unused
(void)context; // Unused
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
// 1. Print the header
if (num_printed++ == 0) printf("Timestamp Recommended %s domain\n", operation == 'E' ? "Registration" : "Browsing");
printtimestamp();
if (errorCode)
printf("Error code %d\n", errorCode);
else if (!*replyDomain)
printf("Error: No reply domain\n");
else
{
printf("%-10s", DomainMsg(flags));
printf("%-8s", (flags & kDNSServiceFlagsMoreComing) ? "(More)" : "");
if (partialflags) printf("Flags: %4X ", partialflags);
else printf(" ");
// 2. Count the labels
while (replyDomain && *replyDomain && labels < MAX_LABELS)
{
label[labels++] = replyDomain;
replyDomain = GetNextLabel(replyDomain, text);
}
// 3. Decide if we're going to clump the last two or three labels (e.g. "apple.com", or "nicta.com.au")
if (labels >= 3 && replyDomain - label[labels-1] <= 3 && label[labels-1] - label[labels-2] <= 4) initial = 3;
else if (labels >= 2 && replyDomain - label[labels-1] <= 4) initial = 2;
else initial = 1;
labels -= initial;
// 4. Print the initial one-, two- or three-label clump
for (i=0; i<initial; i++)
{
GetNextLabel(label[labels+i], text);
if (i>0) printf(".");
printf("%s", text);
}
printf("\n");
// 5. Print the remainder of the hierarchy
for (depth=0; depth<labels; depth++)
{
printf(" ");
for (i=0; i<=depth; i++) printf("- ");
GetNextLabel(label[labels-1-depth], text);
printf("> %s\n", text);
}
}
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
static int CopyLabels(char *dst, const char *lim, const char **srcp, int labels)
{
const char *src = *srcp;
while (*src != '.' || --labels > 0)
{
if (*src == '\\') *dst++ = *src++; // Make sure "\." doesn't confuse us
if (!*src || dst >= lim) return -1;
*dst++ = *src++;
if (!*src || dst >= lim) return -1;
}
*dst++ = 0;
*srcp = src + 1; // skip over final dot
return 0;
}
static void DNSSD_API zonedata_resolve(DNSServiceRef sdref, const DNSServiceFlags flags, uint32_t ifIndex, DNSServiceErrorType errorCode,
const char *fullname, const char *hosttarget, uint16_t opaqueport, uint16_t txtLen, const unsigned char *txt, void *context)
{
union { uint16_t s; u_char b[2]; } port = { opaqueport };
uint16_t PortAsNumber = ((uint16_t)port.b[0]) << 8 | port.b[1];
const char *p = fullname;
char n[kDNSServiceMaxDomainName];
char t[kDNSServiceMaxDomainName];
const unsigned char *max = txt + txtLen;
(void)sdref; // Unused
(void)ifIndex; // Unused
(void)context; // Unused
//if (!(flags & kDNSServiceFlagsAdd)) return;
if (errorCode) { printf("Error code %d\n", errorCode); return; }
if (CopyLabels(n, n + kDNSServiceMaxDomainName, &p, 3)) return; // Fetch name+type
p = fullname;
if (CopyLabels(t, t + kDNSServiceMaxDomainName, &p, 1)) return; // Skip first label
if (CopyLabels(t, t + kDNSServiceMaxDomainName, &p, 2)) return; // Fetch next two labels (service type)
if (num_printed++ == 0)
{
printf("\n");
printf("; To direct clients to browse a different domain, substitute that domain in place of '@'\n");
printf("%-47s PTR %s\n", "lb._dns-sd._udp", "@");
printf("\n");
printf("; In the list of services below, the SRV records will typically reference dot-local Multicast DNS names.\n");
printf("; When transferring this zone file data to your unicast DNS server, you'll need to replace those dot-local\n");
printf("; names with the correct fully-qualified (unicast) domain name of the target host offering the service.\n");
}
printf("\n");
printf("%-47s PTR %s\n", t, n);
printf("%-47s SRV 0 0 %d %s ; Replace with unicast FQDN of target host\n", n, PortAsNumber, hosttarget);
printf("%-47s TXT ", n);
while (txt < max)
{
const unsigned char *const end = txt + 1 + txt[0];
txt++; // Skip over length byte
printf(" \"");
while (txt<end)
{
if (*txt == '\\' || *txt == '\"') printf("\\");
printf("%c", *txt++);
}
printf("\"");
}
printf("\n");
DNSServiceRefDeallocate(sdref);
free(context);
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
static void DNSSD_API zonedata_browse(DNSServiceRef sdref, const DNSServiceFlags flags, uint32_t ifIndex, DNSServiceErrorType errorCode,
const char *replyName, const char *replyType, const char *replyDomain, void *context)
{
DNSServiceRef *newref;
(void)sdref; // Unused
(void)context; // Unused
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
if (!(flags & kDNSServiceFlagsAdd)) return;
if (errorCode) { printf("Error code %d\n", errorCode); return; }
newref = malloc(sizeof(*newref));
*newref = client;
DNSServiceResolve(newref, kDNSServiceFlagsShareConnection, ifIndex, replyName, replyType, replyDomain, zonedata_resolve, newref);
}
static void DNSSD_API browse_reply(DNSServiceRef sdref, const DNSServiceFlags flags, uint32_t ifIndex, DNSServiceErrorType errorCode,
const char *replyName, const char *replyType, const char *replyDomain, void *context)
{
char *op = (flags & kDNSServiceFlagsAdd) ? "Add" : "Rmv";
(void)sdref; // Unused
(void)context; // Unused
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
if (num_printed++ == 0) printf("Timestamp A/R Flags if %-25s %-25s %s\n", "Domain", "Service Type", "Instance Name");
printtimestamp();
if (errorCode) printf("Error code %d\n", errorCode);
else printf("%s%6X%3d %-25s %-25s %s\n", op, flags, ifIndex, replyDomain, replyType, replyName);
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
// To test selective cancellation of operations of shared sockets,
// cancel the current operation when we've got a multiple of five results
//if (operation == 'S' && num_printed % 5 == 0) DNSServiceRefDeallocate(sdref);
}
static void ShowTXTRecord(uint16_t txtLen, const unsigned char *txtRecord)
{
const unsigned char *ptr = txtRecord;
const unsigned char *max = txtRecord + txtLen;
while (ptr < max)
{
const unsigned char *const end = ptr + 1 + ptr[0];
if (end > max) { printf("<< invalid data >>"); break; }
if (++ptr < end) printf(" "); // As long as string is non-empty, begin with a space
while (ptr<end)
{
// We'd like the output to be shell-friendly, so that it can be copied and pasted unchanged into a "dns-sd -R" command.
// However, this is trickier than it seems. Enclosing a string in double quotes doesn't necessarily make it
// shell-safe, because shells still expand variables like $foo even when they appear inside quoted strings.
// Enclosing a string in single quotes is better, but when using single quotes even backslash escapes are ignored,
// meaning there's simply no way to represent a single quote (or apostrophe) inside a single-quoted string.
// The only remaining solution is not to surround the string with quotes at all, but instead to use backslash
// escapes to encode spaces and all other known shell metacharacters.
// (If we've missed any known shell metacharacters, please let us know.)
// In addition, non-printing ascii codes (0-31) are displayed as \xHH, using a two-digit hex value.
// Because '\' is itself a shell metacharacter (the shell escape character), it has to be escaped as "\\" to survive
// the round-trip to the shell and back. This means that a single '\' is represented here as EIGHT backslashes:
// The C compiler eats half of them, resulting in four appearing in the output.
// The shell parses those four as a pair of "\\" sequences, passing two backslashes to the "dns-sd -R" command.
// The "dns-sd -R" command interprets this single "\\" pair as an escaped literal backslash. Sigh.
if (strchr(" &;`'\"|*?~<>^()[]{}$", *ptr)) printf("\\");
if (*ptr == '\\') printf("\\\\\\\\");
else if (*ptr >= ' ' ) printf("%c", *ptr);
else printf("\\\\x%02X", *ptr);
ptr++;
}
}
}
static void DNSSD_API resolve_reply(DNSServiceRef sdref, const DNSServiceFlags flags, uint32_t ifIndex, DNSServiceErrorType errorCode,
const char *fullname, const char *hosttarget, uint16_t opaqueport, uint16_t txtLen, const unsigned char *txtRecord, void *context)
{
union { uint16_t s; u_char b[2]; } port = { opaqueport };
uint16_t PortAsNumber = ((uint16_t)port.b[0]) << 8 | port.b[1];
(void)sdref; // Unused
(void)ifIndex; // Unused
(void)context; // Unused
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
if (errorCode)
printf("Error code %d\n", errorCode);
else
{
printtimestamp();
printf("%s can be reached at %s:%u (interface %d)", fullname, hosttarget, PortAsNumber, ifIndex);
if (flags) printf(" Flags: %X", flags);
// Don't show degenerate TXT records containing nothing but a single empty string
if (txtLen > 1) { printf("\n"); ShowTXTRecord(txtLen, txtRecord); }
printf("\n");
}
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
static void myTimerCallBack(void)
{
DNSServiceErrorType err = kDNSServiceErr_Unknown;
switch (operation)
{
case 'A':
{
switch (addtest)
{
case 0: printf("Adding Test HINFO record\n");
err = DNSServiceAddRecord(client, &record, 0, kDNSServiceType_HINFO, sizeof(myhinfoW), &myhinfoW[0], 0);
addtest = 1;
break;
case 1: printf("Updating Test HINFO record\n");
err = DNSServiceUpdateRecord(client, record, 0, sizeof(myhinfoX), &myhinfoX[0], 0);
addtest = 2;
break;
case 2: printf("Removing Test HINFO record\n");
err = DNSServiceRemoveRecord(client, record, 0);
addtest = 0;
break;
}
}
break;
case 'U':
{
if (updatetest[1] != 'Z') updatetest[1]++;
else updatetest[1] = 'A';
updatetest[0] = 3 - updatetest[0];
updatetest[2] = updatetest[1];
printtimestamp();
printf("Updating Test TXT record to %c\n", updatetest[1]);
err = DNSServiceUpdateRecord(client, NULL, 0, 1+updatetest[0], &updatetest[0], 0);
}
break;
case 'N':
{
printf("Adding big NULL record\n");
err = DNSServiceAddRecord(client, &record, 0, kDNSServiceType_NULL, sizeof(bigNULL), &bigNULL[0], 0);
if (err) printf("Failed: %d\n", err); else printf("Succeeded\n");
timeOut = LONG_TIME;
#if _DNS_SD_LIBDISPATCH
if (timer_source)
dispatch_source_set_timer(timer_source, dispatch_time(DISPATCH_TIME_NOW, (uint64_t)timeOut * NSEC_PER_SEC),
(uint64_t)timeOut * NSEC_PER_SEC, 0);
#endif
}
break;
}
if (err != kDNSServiceErr_NoError)
{
fprintf(stderr, "DNSService add/update/remove failed %ld\n", (long int)err);
stopNow = 1;
}
}
static void DNSSD_API reg_reply(DNSServiceRef sdref, const DNSServiceFlags flags, DNSServiceErrorType errorCode,
const char *name, const char *regtype, const char *domain, void *context)
{
(void)sdref; // Unused
(void)flags; // Unused
(void)context; // Unused
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
printtimestamp();
printf("Got a reply for service %s.%s%s: ", name, regtype, domain);
if (errorCode == kDNSServiceErr_NoError)
{
if (flags & kDNSServiceFlagsAdd) printf("Name now registered and active\n");
else printf("Name registration removed\n");
if (operation == 'A' || operation == 'U' || operation == 'N')
{
timeOut = 5;
#if _DNS_SD_LIBDISPATCH
if (timer_source)
dispatch_source_set_timer(timer_source, dispatch_time(DISPATCH_TIME_NOW, (uint64_t)timeOut * NSEC_PER_SEC),
(uint64_t)timeOut * NSEC_PER_SEC, 0);
#endif
}
}
else if (errorCode == kDNSServiceErr_NameConflict)
{
printf("Name in use, please choose another\n");
exit(-1);
}
else
printf("Error %d\n", errorCode);
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
// Output the wire-format domainname pointed to by rd
static int snprintd(char *p, int max, const unsigned char **rd)
{
const char *const buf = p;
const char *const end = p + max;
while (**rd) { p += snprintf(p, end-p, "%.*s.", **rd, *rd+1); *rd += 1 + **rd; }
*rd += 1; // Advance over the final zero byte
return(p-buf);
}
static void DNSSD_API qr_reply(DNSServiceRef sdref, const DNSServiceFlags flags, uint32_t ifIndex, DNSServiceErrorType errorCode,
const char *fullname, uint16_t rrtype, uint16_t rrclass, uint16_t rdlen, const void *rdata, uint32_t ttl, void *context)
{
char *op = (flags & kDNSServiceFlagsAdd) ? "Add" : "Rmv";
const unsigned char *rd = rdata;
const unsigned char *end = (const unsigned char *) rdata + rdlen;
char rdb[1000] = "", *p = rdb;
int unknowntype = 0;
(void)sdref; // Unused
(void)flags; // Unused
(void)ifIndex; // Unused
(void)ttl; // Unused
(void)context; // Unused
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
if (num_printed++ == 0) printf("Timestamp A/R Flags if %-30s%4s%4s Rdata\n", "Name", "T", "C");
printtimestamp();
if (!errorCode)
{
switch (rrtype)
{
case kDNSServiceType_A:
snprintf(rdb, sizeof(rdb), "%d.%d.%d.%d", rd[0], rd[1], rd[2], rd[3]);
break;
case kDNSServiceType_NS:
case kDNSServiceType_CNAME:
case kDNSServiceType_PTR:
case kDNSServiceType_DNAME:
p += snprintd(p, sizeof(rdb), &rd);
break;
case kDNSServiceType_SOA:
p += snprintd(p, rdb + sizeof(rdb) - p, &rd); // mname
p += snprintf(p, rdb + sizeof(rdb) - p, " ");
p += snprintd(p, rdb + sizeof(rdb) - p, &rd); // rname
p += snprintf(p, rdb + sizeof(rdb) - p, " Ser %d Ref %d Ret %d Exp %d Min %d",
ntohl(((uint32_t*)rd)[0]), ntohl(((uint32_t*)rd)[1]), ntohl(((uint32_t*)rd)[2]), ntohl(((uint32_t*)rd)[3]), ntohl(((uint32_t*)rd)[4]));
break;
case kDNSServiceType_AAAA:
snprintf(rdb, sizeof(rdb), "%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X",
rd[0x0], rd[0x1], rd[0x2], rd[0x3], rd[0x4], rd[0x5], rd[0x6], rd[0x7],
rd[0x8], rd[0x9], rd[0xA], rd[0xB], rd[0xC], rd[0xD], rd[0xE], rd[0xF]);
break;
case kDNSServiceType_SRV:
p += snprintf(p, rdb + sizeof(rdb) - p, "%d %d %d ", // priority, weight, port
ntohs(*(unsigned short*)rd), ntohs(*(unsigned short*)(rd+2)), ntohs(*(unsigned short*)(rd+4)));
rd += 6;
p += snprintd(p, rdb + sizeof(rdb) - p, &rd); // target host
break;
default : snprintf(rdb, sizeof(rdb), "%d bytes%s", rdlen, rdlen ? ":" : ""); unknowntype = 1; break;
}
}
printf("%s%6X%3d %-30s%4d%4d %s", op, flags, ifIndex, fullname, rrtype, rrclass, rdb);
if (unknowntype) while (rd < end) printf(" %02X", *rd++);
if (errorCode)
{
if (errorCode == kDNSServiceErr_NoSuchRecord) printf("No Such Record");
else if (errorCode == kDNSServiceErr_Timeout)
{
printf("No Such Record\n");
printf("Query Timed Out\n");
exit(1);
}
}
printf("\n");
if (operation == 'C')
if (flags & kDNSServiceFlagsAdd)
DNSServiceReconfirmRecord(flags, ifIndex, fullname, rrtype, rrclass, rdlen, rdata);
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
#if HAS_NAT_PMP_API
static void DNSSD_API port_mapping_create_reply(DNSServiceRef sdref, DNSServiceFlags flags, uint32_t ifIndex, DNSServiceErrorType errorCode, uint32_t publicAddress, uint32_t protocol, uint16_t privatePort, uint16_t publicPort, uint32_t ttl, void *context)
{
(void)sdref; // Unused
(void)flags; // Unused
(void)context; // Unused
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
if (num_printed++ == 0) printf("Timestamp if %-20s %-15s %-15s %-15s %-6s\n", "External Address", "Protocol", "Internal Port", "External Port", "TTL");
printtimestamp();
if (errorCode && errorCode != kDNSServiceErr_DoubleNAT) printf("Error code %d\n", errorCode);
else
{
const unsigned char *digits = (const unsigned char *)&publicAddress;
char addr[256];
snprintf(addr, sizeof(addr), "%d.%d.%d.%d", digits[0], digits[1], digits[2], digits[3]);
printf("%-4d %-20s %-15d %-15d %-15d %-6d%s\n", ifIndex, addr, protocol, ntohs(privatePort), ntohs(publicPort), ttl, errorCode == kDNSServiceErr_DoubleNAT ? " Double NAT" : "");
}
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
#endif
#if HAS_ADDRINFO_API
static void DNSSD_API addrinfo_reply(DNSServiceRef sdref, DNSServiceFlags flags, uint32_t interfaceIndex, DNSServiceErrorType errorCode, const char *hostname, const struct sockaddr *address, uint32_t ttl, void *context)
{
char *op = (flags & kDNSServiceFlagsAdd) ? "Add" : "Rmv";
char addr[256] = "";
(void) sdref;
(void) context;
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
if (num_printed++ == 0) printf("Timestamp A/R Flags if %-25s %-44s %s\n", "Hostname", "Address", "TTL");
printtimestamp();
if (address && address->sa_family == AF_INET)
{
const unsigned char *b = (const unsigned char *) &((struct sockaddr_in *)address)->sin_addr;
snprintf(addr, sizeof(addr), "%d.%d.%d.%d", b[0], b[1], b[2], b[3]);
}
else if (address && address->sa_family == AF_INET6)
{
char if_name[IFNAMSIZ]; // Older Linux distributions don't define IF_NAMESIZE
const struct sockaddr_in6 *s6 = (const struct sockaddr_in6 *)address;
const unsigned char *b = (const unsigned char * )&s6->sin6_addr;
if (!if_indextoname(s6->sin6_scope_id, if_name))
snprintf(if_name, sizeof(if_name), "<%d>", s6->sin6_scope_id);
snprintf(addr, sizeof(addr), "%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X:%02X%02X%%%s",
b[0x0], b[0x1], b[0x2], b[0x3], b[0x4], b[0x5], b[0x6], b[0x7],
b[0x8], b[0x9], b[0xA], b[0xB], b[0xC], b[0xD], b[0xE], b[0xF], if_name);
}
printf("%s%6X%3d %-25s %-44s %d", op, flags, interfaceIndex, hostname, addr, ttl);
if (errorCode)
{
if (errorCode == kDNSServiceErr_NoSuchRecord) printf(" No Such Record");
else printf(" Error code %d", errorCode);
}
printf("\n");
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
#endif
//*************************************************************************************************************
// The main test function
static void HandleEvents(void)
#if _DNS_SD_LIBDISPATCH
{
main_queue = dispatch_get_main_queue();
if (client) DNSServiceSetDispatchQueue(client, main_queue);
if (client_pa) DNSServiceSetDispatchQueue(client_pa, main_queue);
if (operation == 'A' || operation == 'U' || operation == 'N')
{
timer_source = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, main_queue);
if (timer_source)
{
// Start the timer "timeout" seconds into the future and repeat it every "timeout" seconds
dispatch_source_set_timer(timer_source, dispatch_time(DISPATCH_TIME_NOW, (uint64_t)timeOut * NSEC_PER_SEC),
(uint64_t)timeOut * NSEC_PER_SEC, 0);
dispatch_source_set_event_handler(timer_source, ^{myTimerCallBack();});
dispatch_resume(timer_source);
}
}
dispatch_main();
}
#else
{
int dns_sd_fd = client ? DNSServiceRefSockFD(client ) : -1;
int dns_sd_fd2 = client_pa ? DNSServiceRefSockFD(client_pa) : -1;
int nfds = dns_sd_fd + 1;
fd_set readfds;
struct timeval tv;
int result;
if (dns_sd_fd2 > dns_sd_fd) nfds = dns_sd_fd2 + 1;
while (!stopNow)
{
// 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. Add the fd for our client(s) to the fd_set
if (client ) FD_SET(dns_sd_fd , &readfds);
if (client_pa) FD_SET(dns_sd_fd2, &readfds);
// 3. Set up the timeout.
tv.tv_sec = timeOut;
tv.tv_usec = 0;
result = select(nfds, &readfds, (fd_set*)NULL, (fd_set*)NULL, &tv);
if (result > 0)
{
DNSServiceErrorType err = kDNSServiceErr_NoError;
if (client && FD_ISSET(dns_sd_fd , &readfds)) err = DNSServiceProcessResult(client );
else if (client_pa && FD_ISSET(dns_sd_fd2, &readfds)) err = DNSServiceProcessResult(client_pa);
if (err) { fprintf(stderr, "DNSServiceProcessResult returned %d\n", err); stopNow = 1; }
}
else if (result == 0)
myTimerCallBack();
else
{
printf("select() returned %d errno %d %s\n", result, errno, strerror(errno));
if (errno != EINTR) stopNow = 1;
}
}
}
#endif
static int getfirstoption(int argc, char **argv, const char *optstr, int *pOptInd)
// Return the recognized option in optstr and the option index of the next arg.
#if NOT_HAVE_GETOPT
{
int i;
for (i=1; i < argc; i++)
{
if (argv[i][0] == '-' && &argv[i][1] &&
NULL != strchr(optstr, argv[i][1]))
{
*pOptInd = i + 1;
return argv[i][1];
}
}
return -1;
}
#else
{
int o = getopt(argc, (char *const *)argv, optstr);
*pOptInd = optind;
return o;
}
#endif
static void DNSSD_API MyRegisterRecordCallback(DNSServiceRef service, DNSRecordRef rec, const DNSServiceFlags flags,
DNSServiceErrorType errorCode, void *context)
{
char *name = (char *)context;
(void)service; // Unused
(void)rec; // Unused
(void)flags; // Unused
EXIT_IF_LIBDISPATCH_FATAL_ERROR(errorCode);
printtimestamp();
printf("Got a reply for record %s: ", name);
switch (errorCode)
{
case kDNSServiceErr_NoError: printf("Name now registered and active\n"); break;
case kDNSServiceErr_NameConflict: printf("Name in use, please choose another\n"); exit(-1);
default: printf("Error %d\n", errorCode); break;
}
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
// DNSServiceRemoveRecord(service, rec, 0); to test record removal
#if 0 // To test updating of individual records registered via DNSServiceRegisterRecord
if (!errorCode)
{
int x = 0x11111111;
printf("Updating\n");
DNSServiceUpdateRecord(service, rec, 0, sizeof(x), &x, 0);
}
#endif
if (!(flags & kDNSServiceFlagsMoreComing)) fflush(stdout);
}
static void getip(const char *const name, struct sockaddr_storage *result)
{
struct addrinfo *addrs = NULL;
int err = getaddrinfo(name, NULL, NULL, &addrs);
if (err) fprintf(stderr, "getaddrinfo error %d for %s", err, name);
else memcpy(result, addrs->ai_addr, SA_LEN(addrs->ai_addr));
if (addrs) freeaddrinfo(addrs);
}
static DNSServiceErrorType RegisterProxyAddressRecord(DNSServiceRef sdref, const char *host, const char *ip, DNSServiceFlags flags)
{
// Call getip() after the call DNSServiceCreateConnection().
// On the Win32 platform, WinSock must be initialized for getip() to succeed.
// Any DNSService* call will initialize WinSock for us, so we make sure
// DNSServiceCreateConnection() is called before getip() is.
struct sockaddr_storage hostaddr;
getip(ip, &hostaddr);
flags |= kDNSServiceFlagsUnique;
if (hostaddr.ss_family == AF_INET)
return(DNSServiceRegisterRecord(sdref, &record, flags, opinterface, host,
kDNSServiceType_A, kDNSServiceClass_IN, 4, &((struct sockaddr_in *)&hostaddr)->sin_addr, 240, MyRegisterRecordCallback, (void*)host));
else if (hostaddr.ss_family == AF_INET6)
return(DNSServiceRegisterRecord(sdref, &record, flags, opinterface, host,
kDNSServiceType_AAAA, kDNSServiceClass_IN, 16, &((struct sockaddr_in6*)&hostaddr)->sin6_addr, 240, MyRegisterRecordCallback, (void*)host));
else return(kDNSServiceErr_BadParam);
}
#define HexVal(X) ( ((X) >= '0' && (X) <= '9') ? ((X) - '0' ) : \
((X) >= 'A' && (X) <= 'F') ? ((X) - 'A' + 10) : \
((X) >= 'a' && (X) <= 'f') ? ((X) - 'a' + 10) : 0)
#define HexPair(P) ((HexVal((P)[0]) << 4) | HexVal((P)[1]))
static DNSServiceErrorType RegisterService(DNSServiceRef *sdref,
const char *nam, const char *typ, const char *dom, const char *host, const char *port, int argc, char **argv, DNSServiceFlags flags)
{
uint16_t PortAsNumber = atoi(port);
Opaque16 registerPort = { { PortAsNumber >> 8, PortAsNumber & 0xFF } };
unsigned char txt[2048] = "";
unsigned char *ptr = txt;
int i;
if (nam[0] == '.' && nam[1] == 0) nam = ""; // We allow '.' on the command line as a synonym for empty string
if (dom[0] == '.' && dom[1] == 0) dom = ""; // We allow '.' on the command line as a synonym for empty string
printf("Registering Service %s.%s%s%s", nam[0] ? nam : "<<Default>>", typ, dom[0] ? "." : "", dom);
if (host && *host) printf(" host %s", host);
printf(" port %s", port);
if (argc)
{
for (i = 0; i < argc; i++)
{
const char *p = argv[i];
*ptr = 0;
while (*p && *ptr < 255 && ptr + 1 + *ptr < txt+sizeof(txt))
{
if (p[0] != '\\' || p[1] == 0) { ptr[++*ptr] = *p; p+=1; }
else if (p[1] == 'x' && isxdigit(p[2]) && isxdigit(p[3])) { ptr[++*ptr] = HexPair(p+2); p+=4; }
else { ptr[++*ptr] = p[1]; p+=2; }
}
ptr += 1 + *ptr;
}
printf(" TXT");
ShowTXTRecord(ptr-txt, txt);
}
printf("\n");
//flags |= kDNSServiceFlagsAllowRemoteQuery;
//flags |= kDNSServiceFlagsNoAutoRename;
return(DNSServiceRegister(sdref, flags, opinterface, nam, typ, dom, host, registerPort.NotAnInteger, (uint16_t) (ptr-txt), txt, reg_reply, NULL));
}
#define TypeBufferSize 80
static char *gettype(char *buffer, char *typ)
{
if (!typ || !*typ || (typ[0] == '.' && typ[1] == 0)) typ = "_http._tcp";
if (!strchr(typ, '.')) { snprintf(buffer, TypeBufferSize, "%s._tcp", typ); typ = buffer; }
return(typ);
}
int main(int argc, char **argv)
{
DNSServiceErrorType err;
char buffer[TypeBufferSize], *typ, *dom;
int opi;
DNSServiceFlags flags = 0;
// Extract the program name from argv[0], which by convention contains the path to this executable.
// Note that this is just a voluntary convention, not enforced by the kernel --
// the process calling exec() can pass bogus data in argv[0] if it chooses to.
const char *a0 = strrchr(argv[0], kFilePathSep) + 1;
if (a0 == (const char *)1) a0 = argv[0];
#if defined(_WIN32)
HeapSetInformation(NULL, HeapEnableTerminationOnCorruption, NULL, 0);
#endif
#if TEST_NEW_CLIENTSTUB
printf("Using embedded copy of dnssd_clientstub instead of system library\n");
if (sizeof(argv) == 8) printf("Running in 64-bit mode\n");
#endif
// Test code for TXTRecord functions
//TXTRecordRef txtRecord;
//TXTRecordCreate(&txtRecord, 0, NULL);
//TXTRecordSetValue(&txtRecord, "aaa", 1, "b");
//printf("%d\n", TXTRecordContainsKey(TXTRecordGetLength(&txtRecord), TXTRecordGetBytesPtr(&txtRecord), "Aaa"));
if (argc > 1 && !strcmp(argv[1], "-lo"))
{
argc--;
argv++;
opinterface = kDNSServiceInterfaceIndexLocalOnly;
printf("Using LocalOnly\n");
}
if (argc > 1 && (!strcmp(argv[1], "-p2p") || !strcmp(argv[1], "-P2P")))
{
argc--;
argv++;
opinterface = kDNSServiceInterfaceIndexP2P;
printf("Using P2P\n");
}
if (argc > 1 && !strcasecmp(argv[1], "-includep2p"))
{
argc--;
argv++;
flags |= kDNSServiceFlagsIncludeP2P;
printf("Including P2P\n");
}
if (argc > 2 && !strcmp(argv[1], "-i"))
{
opinterface = if_nametoindex(argv[2]);
if (!opinterface) opinterface = atoi(argv[2]);
if (!opinterface) { fprintf(stderr, "Unknown interface %s\n", argv[2]); goto Fail; }
argc -= 2;
argv += 2;
}
if (argc < 2) goto Fail; // Minimum command line is the command name and one argument
operation = getfirstoption(argc, argv, "EFBZLlRPQqtCAUNTMISV"
#if HAS_NAT_PMP_API
"X"
#endif
#if HAS_ADDRINFO_API
"G"
#endif
, &opi);
if (operation == -1) goto Fail;
if (opinterface) printf("Using interface %d\n", opinterface);
switch (operation)
{
case 'E': printf("Looking for recommended registration domains:\n");
err = DNSServiceEnumerateDomains(&client, kDNSServiceFlagsRegistrationDomains, opinterface, enum_reply, NULL);
break;
case 'F': printf("Looking for recommended browsing domains:\n");
err = DNSServiceEnumerateDomains(&client, kDNSServiceFlagsBrowseDomains, opinterface, enum_reply, NULL);
//enum_reply(client, kDNSServiceFlagsAdd, 0, 0, "nicta.com.au.", NULL);
//enum_reply(client, kDNSServiceFlagsAdd, 0, 0, "bonjour.nicta.com.au.", NULL);
//enum_reply(client, kDNSServiceFlagsAdd, 0, 0, "ibm.com.", NULL);
//enum_reply(client, kDNSServiceFlagsAdd, 0, 0, "dns-sd.ibm.com.", NULL);
break;
case 'B': typ = (argc < opi+1) ? "" : argv[opi+0];
dom = (argc < opi+2) ? "" : argv[opi+1]; // Missing domain argument is the same as empty string i.e. use system default(s)
typ = gettype(buffer, typ);
if (dom[0] == '.' && dom[1] == 0) dom[0] = 0; // We allow '.' on the command line as a synonym for empty string
printf("Browsing for %s%s%s\n", typ, dom[0] ? "." : "", dom);
err = DNSServiceBrowse(&client, flags, opinterface, typ, dom, browse_reply, NULL);
break;
case 'Z': typ = (argc < opi+1) ? "" : argv[opi+0];
dom = (argc < opi+2) ? "" : argv[opi+1]; // Missing domain argument is the same as empty string i.e. use system default(s)
typ = gettype(buffer, typ);
if (dom[0] == '.' && dom[1] == 0) dom[0] = 0; // We allow '.' on the command line as a synonym for empty string
printf("Browsing for %s%s%s\n", typ, dom[0] ? "." : "", dom);
err = DNSServiceCreateConnection(&client);
sc1 = client;
err = DNSServiceBrowse(&sc1, kDNSServiceFlagsShareConnection, opinterface, typ, dom, zonedata_browse, NULL);
break;
case 'l':
case 'L': {
DNSServiceFlags rflags = 0;
if (argc < opi+2) goto Fail;
typ = (argc < opi+2) ? "" : argv[opi+1];
dom = (argc < opi+3) ? "local" : argv[opi+2];
typ = gettype(buffer, typ);
if (dom[0] == '.' && dom[1] == 0) dom = "local"; // We allow '.' on the command line as a synonym for "local"
printf("Lookup %s.%s.%s\n", argv[opi+0], typ, dom);
if (operation == 'l') rflags |= kDNSServiceFlagsWakeOnResolve;
err = DNSServiceResolve(&client, rflags, opinterface, argv[opi+0], typ, dom, resolve_reply, NULL);
break;
}
case 'R': if (argc < opi+4) goto Fail;
typ = (argc < opi+2) ? "" : argv[opi+1];
dom = (argc < opi+3) ? "" : argv[opi+2];
typ = gettype(buffer, typ);
if (dom[0] == '.' && dom[1] == 0) dom[0] = 0; // We allow '.' on the command line as a synonym for empty string
err = RegisterService(&client, argv[opi+0], typ, dom, NULL, argv[opi+3], argc-(opi+4), argv+(opi+4), flags);
break;
case 'P': if (argc < opi+6) goto Fail;
err = DNSServiceCreateConnection(&client_pa);
if (err) { fprintf(stderr, "DNSServiceCreateConnection returned %d\n", err); return(err); }
err = RegisterProxyAddressRecord(client_pa, argv[opi+4], argv[opi+5], flags);
if (err) break;
err = RegisterService(&client, argv[opi+0], gettype(buffer, argv[opi+1]), argv[opi+2], argv[opi+4], argv[opi+3], argc-(opi+6), argv+(opi+6), flags);
break;
case 't':
case 'q':
case 'Q':
case 'C': {
uint16_t rrtype, rrclass;
flags |= kDNSServiceFlagsReturnIntermediates;
if (operation == 'q') flags |= kDNSServiceFlagsSuppressUnusable;
if (operation == 't') flags |= (kDNSServiceFlagsSuppressUnusable | kDNSServiceFlagsTimeout);
if (argc < opi+1) goto Fail;
rrtype = (argc <= opi+1) ? kDNSServiceType_A : GetRRType(argv[opi+1]);
rrclass = (argc <= opi+2) ? kDNSServiceClass_IN : atoi(argv[opi+2]);
if (rrtype == kDNSServiceType_TXT || rrtype == kDNSServiceType_PTR) flags |= kDNSServiceFlagsLongLivedQuery;
err = DNSServiceQueryRecord(&client, flags, opinterface, argv[opi+0], rrtype, rrclass, qr_reply, NULL);
break;
}
case 'A':
case 'U':
case 'N': {
Opaque16 registerPort = { { 0x12, 0x34 } };
static const char TXT[] = "\xC" "First String" "\xD" "Second String" "\xC" "Third String";
printf("Registering Service Test._testupdate._tcp.local.\n");
err = DNSServiceRegister(&client, 0, opinterface, "Test", "_testupdate._tcp.", "", NULL, registerPort.NotAnInteger, sizeof(TXT)-1, TXT, reg_reply, NULL);
break;
}
case 'T': {
Opaque16 registerPort = { { 0x23, 0x45 } };
char TXT[1024];
unsigned int i;
for (i=0; i<sizeof(TXT); i++)
if ((i & 0x1F) == 0) TXT[i] = 0x1F; else TXT[i] = 'A' + (i >> 5);
printf("Registering Service Test._testlargetxt._tcp.local.\n");
err = DNSServiceRegister(&client, 0, opinterface, "Test", "_testlargetxt._tcp.", "", NULL, registerPort.NotAnInteger, sizeof(TXT), TXT, reg_reply, NULL);
break;
}
case 'M': {
pid_t pid = getpid();
Opaque16 registerPort = { { pid >> 8, pid & 0xFF } };
static const char TXT1[] = "\xC" "First String" "\xD" "Second String" "\xC" "Third String";
static const char TXT2[] = "\xD" "Fourth String" "\xC" "Fifth String" "\xC" "Sixth String";
printf("Registering Service Test._testdualtxt._tcp.local.\n");
err = DNSServiceRegister(&client, flags, opinterface, "Test", "_testdualtxt._tcp.", "", NULL, registerPort.NotAnInteger, sizeof(TXT1)-1, TXT1, reg_reply, NULL);
if (!err) err = DNSServiceAddRecord(client, &record, flags, kDNSServiceType_TXT, sizeof(TXT2)-1, TXT2, 0);
break;
}
case 'I': {
pid_t pid = getpid();
Opaque16 registerPort = { { pid >> 8, pid & 0xFF } };
static const char TXT[] = "\x09" "Test Data";
printf("Registering Service Test._testtxt._tcp.local.\n");
err = DNSServiceRegister(&client, 0, opinterface, "Test", "_testtxt._tcp.", "", NULL, registerPort.NotAnInteger, 0, NULL, reg_reply, NULL);
if (!err) err = DNSServiceUpdateRecord(client, NULL, 0, sizeof(TXT)-1, TXT, 0);
break;
}
#if HAS_NAT_PMP_API
case 'X': {
if (argc == opi) // If no arguments, just fetch IP address
err = DNSServiceNATPortMappingCreate(&client, 0, 0, 0, 0, 0, 0, port_mapping_create_reply, NULL);
else if (argc >= opi+2 && atoi(argv[opi+0]) == 0)
{
DNSServiceProtocol prot = GetProtocol(argv[opi+0]); // Must specify TCP or UDP
uint16_t IntPortAsNumber = atoi(argv[opi+1]); // Must specify internal port
uint16_t ExtPortAsNumber = (argc < opi+3) ? 0 : atoi(argv[opi+2]); // Optional desired external port
uint32_t ttl = (argc < opi+4) ? 0 : atoi(argv[opi+3]); // Optional desired lease lifetime
Opaque16 intp = { { IntPortAsNumber >> 8, IntPortAsNumber & 0xFF } };
Opaque16 extp = { { ExtPortAsNumber >> 8, ExtPortAsNumber & 0xFF } };
err = DNSServiceNATPortMappingCreate(&client, 0, 0, prot, intp.NotAnInteger, extp.NotAnInteger, ttl, port_mapping_create_reply, NULL);
}
else goto Fail;
break;
}
#endif
#if HAS_ADDRINFO_API
case 'G': {
if (argc != opi+2) goto Fail;
else err = DNSServiceGetAddrInfo(&client, kDNSServiceFlagsReturnIntermediates, opinterface, GetProtocol(argv[opi+0]), argv[opi+1], addrinfo_reply, NULL);
break;
}
#endif
case 'S': {
Opaque16 registerPort = { { 0x23, 0x45 } }; // 9029 decimal
unsigned char txtrec[16] = "\xF" "/path=test.html";
DNSRecordRef rec;
unsigned char nulrec[4] = "1234";
err = DNSServiceCreateConnection(&client);
if (err) { fprintf(stderr, "DNSServiceCreateConnection failed %ld\n", (long int)err); return (-1); }
sc1 = client;
err = DNSServiceBrowse(&sc1, kDNSServiceFlagsShareConnection, opinterface, "_http._tcp", "", browse_reply, NULL);
if (err) { fprintf(stderr, "DNSServiceBrowse _http._tcp failed %ld\n", (long int)err); return (-1); }
sc2 = client;
err = DNSServiceBrowse(&sc2, kDNSServiceFlagsShareConnection, opinterface, "_ftp._tcp", "", browse_reply, NULL);
if (err) { fprintf(stderr, "DNSServiceBrowse _ftp._tcp failed %ld\n", (long int)err); return (-1); }
sc3 = client;
err = DNSServiceRegister(&sc3, kDNSServiceFlagsShareConnection, opinterface, "kDNSServiceFlagsShareConnection",
"_http._tcp", "local", NULL, registerPort.NotAnInteger, 0, NULL, reg_reply, NULL);
if (err) { fprintf(stderr, "SharedConnection DNSServiceRegister failed %ld\n", (long int)err); return (-1); }
err = DNSServiceUpdateRecord(sc3, NULL, 0, sizeof(txtrec), txtrec, 0);
if (err) { fprintf(stderr, "SharedConnection DNSServiceUpdateRecord failed %ld\n", (long int)err); return (-1); }
err = DNSServiceAddRecord(sc3, &rec, 0, kDNSServiceType_NULL, sizeof(nulrec), nulrec, 0);
if (err) { fprintf(stderr, "SharedConnection DNSServiceAddRecord failed %ld\n", (long int)err); return (-1); }
err = DNSServiceRemoveRecord(sc3, rec, 0);
if (err) { fprintf(stderr, "SharedConnection DNSServiceRemoveRecord failed %ld\n", (long int)err); return (-1); }
break;
}
case 'V': {
uint32_t v;
uint32_t size = sizeof(v);
err = DNSServiceGetProperty(kDNSServiceProperty_DaemonVersion, &v, &size);
if (err) fprintf(stderr, "DNSServiceGetProperty failed %ld\n", (long int)err);
else printf("Currently running daemon (system service) is version %d.%d\n", v / 10000, v / 100 % 100);
exit(0);
}
default: goto Fail;
}
if (!client || err != kDNSServiceErr_NoError) { fprintf(stderr, "DNSService call failed %ld\n", (long int)err); return (-1); }
HandleEvents();
// Be sure to deallocate the DNSServiceRef when you're finished
if (client ) DNSServiceRefDeallocate(client );
if (client_pa) DNSServiceRefDeallocate(client_pa);
return 0;
Fail:
fprintf(stderr, "%s -E (Enumerate recommended registration domains)\n", a0);
fprintf(stderr, "%s -F (Enumerate recommended browsing domains)\n", a0);
fprintf(stderr, "%s -B <Type> <Domain> (Browse for services instances)\n", a0);
fprintf(stderr, "%s -L <Name> <Type> <Domain> (Look up a service instance)\n", a0);
fprintf(stderr, "%s -R <Name> <Type> <Domain> <Port> [<TXT>...] (Register a service)\n", a0);
fprintf(stderr, "%s -P <Name> <Type> <Domain> <Port> <Host> <IP> [<TXT>...] (Proxy)\n", a0);
fprintf(stderr, "%s -Z <Type> <Domain> (Output results in Zone File format)\n", a0);
fprintf(stderr, "%s -Q <FQDN> <rrtype> <rrclass> (Generic query for any record type)\n", a0);
fprintf(stderr, "%s -C <FQDN> <rrtype> <rrclass> (Query; reconfirming each result)\n", a0);
#if HAS_NAT_PMP_API
fprintf(stderr, "%s -X udp/tcp/udptcp <IntPort> <ExtPort> <TTL> (NAT Port Mapping)\n", a0);
#endif
#if HAS_ADDRINFO_API
fprintf(stderr, "%s -G v4/v6/v4v6 <Hostname> (Get address information for hostname)\n", a0);
#endif
fprintf(stderr, "%s -V (Get version of currently running daemon / system service)\n", a0);
fprintf(stderr, "%s -A (Test Adding/Updating/Deleting a record)\n", a0);
fprintf(stderr, "%s -U (Test updating a TXT record)\n", a0);
fprintf(stderr, "%s -N (Test adding a large NULL record)\n", a0);
fprintf(stderr, "%s -T (Test creating a large TXT record)\n", a0);
fprintf(stderr, "%s -M (Test creating a registration with multiple TXT records)\n", a0);
fprintf(stderr, "%s -I (Test registering and then immediately updating TXT record)\n", a0);
fprintf(stderr, "%s -S (Test multiple operations on a shared socket)\n", a0);
return 0;
}
// Note: The C preprocessor stringify operator ('#') makes a string from its argument, without macro expansion
// e.g. If "version" is #define'd to be "4", then STRINGIFY_AWE(version) will return the string "version", not "4"
// To expand "version" to its value before making the string, use STRINGIFY(version) instead
#define STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s) #s
#define STRINGIFY(s) STRINGIFY_ARGUMENT_WITHOUT_EXPANSION(s)
// NOT static -- otherwise the compiler may optimize it out
// The "@(#) " pattern is a special prefix the "what" command looks for
const char VersionString_SCCS[] = "@(#) dns-sd " STRINGIFY(mDNSResponderVersion) " (" __DATE__ " " __TIME__ ")";
#if _BUILDING_XCODE_PROJECT_
// If the process crashes, then this string will be magically included in the automatically-generated crash log
const char *__crashreporter_info__ = VersionString_SCCS + 5;
asm(".desc ___crashreporter_info__, 0x10");
#endif