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/*
* Copyright (c) 2015-2020 Apple Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _DNS_SD_PRIVATE_H
#define _DNS_SD_PRIVATE_H
#include <dns_sd.h>
#if !defined(DNS_SD_EXCLUDE_PRIVATE_API)
#if defined(__APPLE__)
#define DNS_SD_EXCLUDE_PRIVATE_API 0
#else
#define DNS_SD_EXCLUDE_PRIVATE_API 1
#endif
#endif
// Private flags (kDNSServiceFlagsPrivateOne, kDNSServiceFlagsPrivateTwo, kDNSServiceFlagsPrivateThree, kDNSServiceFlagsPrivateFour, kDNSServiceFlagsPrivateFive) from dns_sd.h
enum
{
kDNSServiceFlagsDenyConstrained = 0x2000,
/*
* This flag is meaningful only for Unicast DNS queries. When set, the daemon will restrict
* DNS resolutions on interfaces defined as constrained for that request.
*/
kDNSServiceFlagsDenyCellular = 0x8000000,
/*
* This flag is meaningful only for Unicast DNS queries. When set, the daemon will restrict
* DNS resolutions on the cellular interface for that request.
*/
kDNSServiceFlagsServiceIndex = 0x10000000,
/*
* This flag is meaningful only for DNSServiceGetAddrInfo() for Unicast DNS queries.
* When set, DNSServiceGetAddrInfo() will interpret the "interfaceIndex" argument of the call
* as the "serviceIndex".
*/
kDNSServiceFlagsDenyExpensive = 0x20000000,
/*
* This flag is meaningful only for Unicast DNS queries. When set, the daemon will restrict
* DNS resolutions on interfaces defined as expensive for that request.
*/
kDNSServiceFlagsPathEvaluationDone = 0x40000000
/*
* This flag is meaningful for only Unicast DNS queries.
* When set, it indicates that Network PathEvaluation has already been performed.
*/
};
#if !DNS_SD_EXCLUDE_PRIVATE_API
/* DNSServiceCreateDelegateConnection()
*
* Parameters:
*
* sdRef: A pointer to an uninitialized DNSServiceRef. Deallocating
* the reference (via DNSServiceRefDeallocate()) severs the
* connection and deregisters all records registered on this connection.
*
* pid : Process ID of the delegate
*
* uuid: UUID of the delegate
*
* Note that only one of the two arguments (pid or uuid) can be specified. If pid
* is zero, uuid will be assumed to be a valid value; otherwise pid will be used.
*
* return value: Returns kDNSServiceErr_NoError on success, otherwise returns
* an error code indicating the specific failure that occurred (in which
* case the DNSServiceRef is not initialized). kDNSServiceErr_NotAuth is
* returned to indicate that the calling process does not have entitlements
* to use this API.
*/
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceCreateDelegateConnection(DNSServiceRef *sdRef, int32_t pid, uuid_t uuid);
// Map the source port of the local UDP socket that was opened for sending the DNS query
// to the process ID of the application that triggered the DNS resolution.
//
/* DNSServiceGetPID() Parameters:
*
* srcport: Source port (in network byte order) of the UDP socket that was created by
* the daemon to send the DNS query on the wire.
*
* pid: Process ID of the application that started the name resolution which triggered
* the daemon to send the query on the wire. The value can be -1 if the srcport
* cannot be mapped.
*
* return value: Returns kDNSServiceErr_NoError on success, or kDNSServiceErr_ServiceNotRunning
* if the daemon is not running. The value of the pid is undefined if the return
* value has error.
*/
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceGetPID
(
uint16_t srcport,
int32_t *pid
);
DNSSD_EXPORT
DNSServiceErrorType DNSSD_API DNSServiceSetDefaultDomainForUser(DNSServiceFlags flags, const char *domain);
SPI_AVAILABLE(macos(10.15.4), ios(13.2.2), watchos(6.2), tvos(13.2))
DNSServiceErrorType DNSSD_API DNSServiceSleepKeepalive_sockaddr
(
DNSServiceRef * sdRef,
DNSServiceFlags flags,
const struct sockaddr * localAddr,
const struct sockaddr * remoteAddr,
unsigned int timeout,
DNSServiceSleepKeepaliveReply callBack,
void * context
);
/*!
* @brief
* Sets the default DNS resolver settings for the caller's process.
*
* @param plist_data_ptr
* Pointer to an nw_resolver_config's binary property list data.
*
* @param plist_data_len
* Byte-length of the binary property list data. Ignored if plist_data_ptr is NULL.
*
* @param require_encryption
* Pass true if the process requires that DNS queries use an encrypted DNS service, such as DNS over HTTPS.
*
* @result
* This function returns kDNSServiceErr_NoError on success, kDNSServiceErr_Invalid if plist_data_len
* exceeds 32,768, and kDNSServiceErr_NoMemory if it fails to allocate memory.
*
* @discussion
* These settings only apply to the calling process's DNSServiceGetAddrInfo and DNSServiceQueryRecord
* requests. This function exists for code that may still use the legacy DNS-SD API for resolving
* hostnames, i.e., it implements the functionality of dnssd_getaddrinfo_set_need_encrypted_query(), but at
* a process-wide level of granularity.
*
* Due to underlying IPC limitations, there's currently a 32 KB limit on the size of the binary property
* list data.
*/
SPI_AVAILABLE(macos(10.16), ios(14.0), watchos(7.0), tvos(14.0))
DNSServiceErrorType DNSSD_API DNSServiceSetResolverDefaults(const void *plist_data_ptr, size_t plist_data_len,
bool require_encryption);
#endif // !DNS_SD_EXCLUDE_PRIVATE_API
#define kDNSServiceCompPrivateDNS "PrivateDNS"
#define kDNSServiceCompMulticastDNS "MulticastDNS"
#endif // _DNS_SD_PRIVATE_H
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