-/*
- * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
+/* -*- Mode: C; tab-width: 4 -*-
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
- *
- * 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: dnssd_ipc.h,v $
-Revision 1.6 2003/08/12 19:56:25 cheshire
-Update to APSL 2.0
-
+ * Copyright (c) 2003-2004, Apple Computer, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef DNSSD_IPC_H
#define DNSSD_IPC_H
#include "dns_sd.h"
-#include <sys/types.h>
-#include <unistd.h>
-#include <sys/un.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-//#define UDSDEBUG // verbose debug output
+//
+// Common cross platform services
+//
+#if defined(WIN32)
+# include <winsock2.h>
+# define dnssd_InvalidSocket INVALID_SOCKET
+# define dnssd_SocketValid(s) ((s) != INVALID_SOCKET)
+# define dnssd_EWOULDBLOCK WSAEWOULDBLOCK
+# define dnssd_EINTR WSAEINTR
+# define dnssd_sock_t SOCKET
+# define dnssd_socklen_t int
+# define dnssd_close(sock) closesocket(sock)
+# define dnssd_errno WSAGetLastError()
+# define dnssd_strerror(X) win32_strerror(X)
+# define ssize_t int
+# define getpid _getpid
+# define unlink _unlink
+extern char *win32_strerror(int inErrorCode);
+#else
+# include <sys/types.h>
+# include <unistd.h>
+# include <sys/un.h>
+# include <string.h>
+# include <stdio.h>
+# include <stdlib.h>
+# include <sys/stat.h>
+# include <sys/socket.h>
+# include <netinet/in.h>
+# define dnssd_InvalidSocket -1
+# define dnssd_SocketValid(s) ((s) >= 0)
+# define dnssd_EWOULDBLOCK EWOULDBLOCK
+# define dnssd_EINTR EINTR
+# define dnssd_EPIPE EPIPE
+# define dnssd_sock_t int
+# define dnssd_socklen_t unsigned int
+# define dnssd_close(sock) close(sock)
+# define dnssd_errno errno
+# define dnssd_strerror(X) strerror(X)
+#endif
+
+#if defined(USE_TCP_LOOPBACK)
+# define AF_DNSSD AF_INET
+# define MDNS_TCP_SERVERADDR "127.0.0.1"
+# define MDNS_TCP_SERVERPORT 5354
+# define LISTENQ 5
+# define dnssd_sockaddr_t struct sockaddr_in
+#else
+# define AF_DNSSD AF_LOCAL
+# ifndef MDNS_UDS_SERVERPATH
+# define MDNS_UDS_SERVERPATH "/var/run/mDNSResponder"
+# endif
+# define LISTENQ 100
+ // longest legal control path length
+# define MAX_CTLPATH 256
+# define dnssd_sockaddr_t struct sockaddr_un
+#endif
+
+// Compatibility workaround
+#ifndef AF_LOCAL
+#define AF_LOCAL AF_UNIX
+#endif
// General UDS constants
-#define MDNS_UDS_SERVERPATH "/var/run/mDNSResponder"
-#define LISTENQ 100
-#define TXT_RECORD_INDEX -1 // record index for default text record
-#define MAX_CTLPATH 256 // longest legal control path length
+#define TXT_RECORD_INDEX ((uint32_t)(-1)) // record index for default text record
// IPC data encoding constants and types
#define VERSION 1
#define IPC_FLAGS_NOREPLY 1 // set flag if no asynchronous replies are to be sent to client
-#define IPC_FLAGS_REUSE_SOCKET 2 // set flag if synchronous errors are to be sent via the primary socket
- // (if not set, first string in message buffer must be path to error socket
+// Structure packing macro. If we're not using GNUC, it's not fatal. Most compilers naturally pack the on-the-wire
+// structures correctly anyway, so a plain "struct" is usually fine. In the event that structures are not packed
+// correctly, our compile-time assertion checks will catch it and prevent inadvertent generation of non-working code.
+#ifndef packedstruct
+ #if ((__GNUC__ > 2) || ((__GNUC__ == 2) && (__GNUC_MINOR__ >= 9)))
+ #define packedstruct struct __attribute__((__packed__))
+ #define packedunion union __attribute__((__packed__))
+ #else
+ #define packedstruct struct
+ #define packedunion union
+ #endif
+#endif
typedef enum
{
- connection = 1, // connected socket via DNSServiceConnect()
- reg_record_request, // reg/remove record only valid for connected sockets
+ request_op_none = 0, // No request yet received on this connection
+ connection_request = 1, // connected socket via DNSServiceCreateConnection()
+ reg_record_request, // reg/remove record only valid for connected sockets
remove_record_request,
enumeration_request,
reg_service_request,
query_request,
reconfirm_record_request,
add_record_request,
- update_record_request
+ update_record_request,
+ setdomain_request, // Up to here is in Tiger and B4W 1.0.3
+ getproperty_request, // New in B4W 1.0.4
+ port_mapping_request, // New in Leopard and B4W 2.0
+ addrinfo_request,
+ send_bpf, // New in SL
+
+ cancel_request = 63
} request_op_t;
typedef enum
{
- enumeration_reply = 64,
- reg_service_reply,
- browse_reply,
- resolve_reply,
- query_reply,
- reg_record_reply
+ enumeration_reply_op = 64,
+ reg_service_reply_op,
+ browse_reply_op,
+ resolve_reply_op,
+ query_reply_op,
+ reg_record_reply_op, // Up to here is in Tiger and B4W 1.0.3
+ getproperty_reply_op, // New in B4W 1.0.4
+ port_mapping_reply_op, // New in Leopard and B4W 2.0
+ addrinfo_reply_op
} reply_op_t;
+#if defined(_WIN64)
+# pragma pack(4)
+#endif
-typedef struct ipc_msg_hdr_struct ipc_msg_hdr;
-
-
-// client stub callback to process message from server and deliver results to
-// client application
-
-typedef void (*process_reply_callback)
- (
- DNSServiceRef sdr,
- ipc_msg_hdr *hdr,
- char *msg
- );
-
-// allow 64-bit client to interoperate w/ 32-bit daemon
-typedef union
+// Define context object big enough to hold a 64-bit pointer,
+// to accomodate 64-bit clients communicating with 32-bit daemon.
+// There's no reason for the daemon to ever be a 64-bit process, but its clients might be
+typedef packedunion
{
void *context;
- uint32_t ptr64[2];
+ uint32_t u32[2];
} client_context_t;
-
-typedef struct ipc_msg_hdr_struct
+typedef packedstruct
{
uint32_t version;
uint32_t datalen;
- uint32_t flags;
- union
- {
- request_op_t request_op;
- reply_op_t reply_op;
- } op;
+ uint32_t ipc_flags;
+ uint32_t op; // request_op_t or reply_op_t
client_context_t client_context; // context passed from client, returned by server in corresponding reply
- int reg_index; // identifier for a record registered via DNSServiceRegisterRecord() on a
- // socket connected by DNSServiceConnect(). Must be unique in the scope of the connection, such that and
+ uint32_t reg_index; // identifier for a record registered via DNSServiceRegisterRecord() on a
+ // socket connected by DNSServiceCreateConnection(). Must be unique in the scope of the connection, such that and
// index/socket pair uniquely identifies a record. (Used to select records for removal by DNSServiceRemoveRecord())
- } ipc_msg_hdr_struct;
-
-
-
+ } ipc_msg_hdr;
// routines to write to and extract data from message buffers.
-// caller responsible for bounds checking.
+// caller responsible for bounds checking.
// ptr is the address of the pointer to the start of the field.
// it is advanced to point to the next field, or the end of the message
+void put_uint32(const uint32_t l, char **ptr);
+uint32_t get_uint32(const char **ptr, const char *end);
-void put_flags(const DNSServiceFlags flags, char **ptr);
-DNSServiceFlags get_flags(char **ptr);
+void put_uint16(uint16_t s, char **ptr);
+uint16_t get_uint16(const char **ptr, const char *end);
-void put_long(const uint32_t l, char **ptr);
-uint32_t get_long(char **ptr);
+#define put_flags put_uint32
+#define get_flags get_uint32
-void put_error_code(const DNSServiceErrorType, char **ptr);
-DNSServiceErrorType get_error_code(char **ptr);
+#define put_error_code put_uint32
+#define get_error_code get_uint32
int put_string(const char *str, char **ptr);
-int get_string(char **ptr, char *buffer, int buflen);
+int get_string(const char **ptr, const char *const end, char *buffer, int buflen);
-void put_rdata(const int rdlen, const char *rdata, char **ptr);
-char *get_rdata(char **ptr, int rdlen); // return value is rdata pointed to by *ptr -
+void put_rdata(const int rdlen, const unsigned char *rdata, char **ptr);
+const char *get_rdata(const char **ptr, const char *end, int rdlen); // return value is rdata pointed to by *ptr -
// rdata is not copied from buffer.
-void put_short(uint16_t s, char **ptr);
-uint16_t get_short(char **ptr);
-
+void ConvertHeaderBytes(ipc_msg_hdr *hdr);
+struct CompileTimeAssertionChecks_dnssd_ipc
+ {
+ // Check that the compiler generated our on-the-wire packet format structure definitions
+ // properly packed, without adding padding bytes to align fields on 32-bit or 64-bit boundaries.
+ char assert0[(sizeof(client_context_t) == 8) ? 1 : -1];
+ char assert1[(sizeof(ipc_msg_hdr) == 28) ? 1 : -1];
+ };
#endif // DNSSD_IPC_H
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projects / apple / mdnsresponder.git / blobdiff