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Frequency_Inverter/Firmware/Inverter_firmware/rtcs/source/include/dns.h
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2022-01-04 12:22:53 +02:00

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#ifndef __dns_h__
#define __dns_h__
/**HEADER********************************************************************
*
* Copyright (c) 2008 Freescale Semiconductor;
* All Rights Reserved
*
* Copyright (c) 2004-2008 Embedded Access Inc.;
* All Rights Reserved
*
* Copyright (c) 1989-2008 ARC International;
* All Rights Reserved
*
***************************************************************************
*
* THIS SOFTWARE IS PROVIDED BY FREESCALE "AS IS" AND ANY EXPRESSED 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 FREESCALE 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.
*
**************************************************************************
*
* $FileName: dns.h$
* $Version : 3.8.11.0$
* $Date : Aug-10-2011$
*
* Comments:
*
* Definitions for use by either the Domain Name Server
* or Resolver.
*
*END************************************************************************/
extern void DNS_Resolver_task (pointer, pointer);
extern void DNS_Name_Server_task (uint_32);
extern void DNS_Stub_Resolver_task (uint_32);
/***************************************
**
** Constants
**
*/
#define DNSALLOC_SIZE 4
#define DNS_NAME_SERVER_MODULE 1
#define DNS_FULL_RESOLVER_MODULE 2
#define DNS_STUB_RESOLVER_MODULE 3
/* maximum UDP size is 512 bytes, not counting headers */
#define DNS_MAX_PACKET_SIZE 1024
#define DNS_MAX_UDP_MESSAGE_SIZE 512
#define DNS_MAX_IP_STRING_SIZE 16
/* maximum number of query tries for one DNS server address */
#define DNS_MAX_NUMBER_OF_QUERY_TRIES 5
/* picked 400 for now, need to find exact size that won't overflow a UDP send
with headers, ect... SMR June 19, 1998 */
#define DNS_NULL_RECORD_SIZE 400
#define DNS_MAX_LABEL_LENGTH_ARRAY_SIZE 130
#define DNS_LAST_LABEL_ALLOWED 127
#define DNS_NAME_CONTROL_BUFFER DNS_LAST_LABEL_ALLOWED + 1
#define DNS_NAME_LENGTH_BUFFER DNS_MAX_LABEL_LENGTH_ARRAY_SIZE - 1
#define DNS_MAX_LABEL_LENGTH 63
#define DNS_MAX_CHARS_IN_NAME 0xFF
#define DNS_MAX_ID_CHECK 0xFFFE
#define DNS_NAME_ADDITION_ERROR 0x00BADADD
#define DNS_MAX_ALLOWED_NAMES 30
/* one week, as required by RFC 1035 */
#define DNS_MAX_ALLOWED_TTL 604800L
/* ten minutes as required by RFC 2308 */
#define DNS_NAME_ERROR_TTL 600L
/*
** 4 seconds is BIND standard, but any reasonable value will do.
** This value is kept in seconds so that TTL for information
** coming in from the net can be kept in a consistant format and
** all functions can be kept common for all TTL's
*/
#define DNS_QUERY_RETRY_TIME 4L /* in seconds */
#define DNS_SERVER_RETRY_TIME 4000
#define DNS_RESOLVER_RETRY_TIME 4000
/* timeout for the response from the DNS server */
#define DNS_QUERY_TIMEOUT 40000
/* Name server and resolver ports and IP addresses */
#define DNS_NAMESERVER_PORT 53
/* Start CR 2176 */
#define DNS_RESOLVER_PORT 1024
/* End CR 2176 */
#define DNS_RESOLVER_IP_ADDR INADDR_LOOPBACK
/* these are used to check and add to cached data */
#define DNS_NS_AUTH_DATA 1
#define DNS_NS_CACHE_DATA 2
#define DNS_RES_CACHE_DATA 3
/* RFC 1035 suggests 8 as a maximum, but it is a SHOULD item, not a MUST. */
#define DNS_MAX_NUM_CNAME_RETRIES 8
/* This is used to assign the size of a global buffer. */
#define DNS_MAX_NAMES MAX_HOST_ALIASES
#define DNS_MAX_ADDRS MAX_HOST_ADDRESSES
/* Error codes specific to DNS - backward compatibility */
#define DNS_QUERY_OK RTCSERR_DNS_QUERY_OK
#define DNS_NO_NAME_SERVER_RESPONSE RTCSERR_DNS_NO_NAME_SERVER_RESPONSE
#define DNS_UNABLE_TO_OPEN_SOCKET RTCSERR_DNS_UNABLE_TO_OPEN_SOCKET
#define DNS_UNABLE_TO_BIND_SOCKET RTCSERR_DNS_UNABLE_TO_BIND_SOCKET
#define DNS_UNABLE_TO_UPDATE_ROOT_SERVERS RTCSERR_DNS_UNABLE_TO_UPDATE_ROOT_SERVERS
#define DNS_SOCKET_RECV_ERROR RTCSERR_DNS_SOCKET_RECV_ERROR
#define DNS_UNABLE_TO_SEND_QUERY RTCSERR_DNS_UNABLE_TO_SEND_QUERY
#define DNS_NO_RESPONSE_FROM_RESOLVER RTCSERR_DNS_NO_RESPONSE_FROM_RESOLVER
#define DNS_PACKET_RECEPTION_ERROR RTCSERR_DNS_PACKET_RECEPTION_ERROR
#define DNS_INVALID_NAME RTCSERR_DNS_INVALID_NAME
#define DNS_INVALID_IP_ADDR RTCSERR_DNS_INVALID_IP_ADDR
#define DNS_ALL_SERVERS_QUERIED RTCSERR_DNS_ALL_SERVERS_QUERIED
#define DNS_INVALID_LOCAL_NAME RTCSERR_DNS_INVALID_LOCAL_NAME
#define DNS_UNABLE_TO_ALLOCATE_MEMORY RTCSERR_DNS_UNABLE_TO_ALLOCATE_MEMORY
#define DNS_UNABLE_TO_FREE_SOCKET RTCSERR_DNS_UNABLE_TO_FREE_SOCKET
#define DNS_VALID_IP_ADDR RTCSERR_DNS_VALID_IP_ADDR
#define DNS_INITIALIZATION_FAILURE RTCSERR_DNS_INITIALIZATION_FAILURE
#define DNS_NOT_IMPLEMENTED RTCSERR_DNS_NOT_IMPLEMENTED
#define DNS_UNABLE_TO_CREATE_PARTITION RTCSERR_DNS_UNABLE_TO_CREATE_PARTITION
#define DNS_SHORT_MESSAGE_ERROR RTCSERR_DNS_SHORT_MESSAGE_ERROR
/* Any value from 64 to 255 will do if there is a conflict with these */
#define DNS_APPEND_LOCAL_NAME 0xFF
#define DNS_NOT_DOTTED_NAME_FORMAT 0xFE
/* Query Codes */
#define DNS_STANDARD_QUERY 0x0000
#define DNS_INVERSE_QUERY 0x0800
#define DNS_STATUS_REQUEST 0x1000
#define DNS_RECURSION_DESIRED 0x0100
/* QDCOUNT Codes */
#define DNS_SINGLE_QUERY 0x0001
#define DNS_DOUBLE_QUERY 0x0002
#define DNS_TRIPLE_QUERY 0x0003
/* ANCOUNT Codes */
#define DNS_NO_ANSWER 0x0000
#define DNS_SINGLE_ANSWER 0x0001
#define DNS_DOUBLE_ANSWER 0x0002
#define DNS_TRIPLE_ANSWER 0x0003
#define DNS_QADRUPLE_ANSWER 0x0004
/* Response Codes */
#define DNS_RESPONSE 0x8000
#define DNS_RECURSION_DESIRED 0x0100
#define DNS_RECURSION_AVAILABLE 0x0080
#define DNS_AUTHORITATIVE_ANSWER 0x0400
#define DNS_TRUNCATION 0x0200
#define DNS_NO_ERROR 0x0000
#define DNS_FORMAT_ERROR 0x0001
#define DNS_SERVER_FAILURE 0x0002
#define DNS_NAME_ERROR 0x0003
#define DNS_AUTHORITATIVE_NAME_ERROR 0x0403
#define DNS_QUERY_NOT_IMPLEMENTED 0x0004
#define DNS_QUERY_REFUSED 0x0005
#define DNS_RCODE_MASK 0x000F
#define DNS_OPCODE_MASK 0x7800
#define DNS_COMPRESSED_NAME_MASK 0xC0
#define DNS_COMPRESSED_LOCATION_MASK 0x3FFF
/* These are needed for the TI board */
#define DNS_UINT_16_MASK 0xFFFF
#define DNS_CHAR_MASK 0xFF
/* TYPE and QTYPE definitions [RFC 1035] -- all TYPES are valid QTYPES
Those marked EXPERIMENTAL or OBSOLETE should never be sent,
however provisions should be made in case they are received */
/* Class specific TYPES */
#define DNS_A 0x0001 /* A host address */
#define DNS_MD 0x0003 /* Mail Destination (OBSOLETE) */
#define DNS_MF 0x0004 /* Mail Forward (OBSOLETE) */
#define DNS_MB 0x0007 /* Mailbox Domain Name (EXPERIMENTAL) */
#define DNS_MG 0x0008 /* Mail Group Member (EXPERIMENTAL) */
#define DNS_MR 0x0009 /* Mail Rename Domain Name (EXPERIMENTAL) */
#define DNS_NULL 0x000A /* Null Resource Record */
#define DNS_WKS 0x000B /* Service Description */
#define DNS_HINFO 0x000D /* Host information */
#define DNS_MINFO 0x000E /* Mailbox or mail list information */
#define DNS_MX 0x000F /* Mail Exchange */
#define DNS_TXT 0x0010 /* Text Strings */
/* Types to be used by all classes */
#define DNS_NS 0x0002 /* Authoritative name server */
#define DNS_SOA 0x0006 /* Start of Zone of Authority */
#define DNS_CNAME 0x0005 /* Canonical Name for an alias */
#define DNS_PTR 0x000C /* Domain name pointer */
/* QTYPES */
#define DNS_AXFR 0x00FC /* Request for transfer of entire zone */
#define DNS_MAILB 0x00FD /* Request for mailbox related records */
#define DNS_MAILA 0x00FE /* Request for mail agent RR's (OBSOLETE) */
/* This is used for both QTYPE and QCLASS definitions */
#define DNS_ALL 0x00FF /* Request for all records or for all classes */
/* CLASS values */
#define DNS_IN 0x0001 /* The Internet */
#define DNS_CS 0x0002 /* CSNET Class (OBSOLETE) */
#define DNS_CH 0x0003 /* CHAOS Class */
#define DNS_HS 0x0004 /* Hessoid [Dyer 87] */
#define DNS_RESERVED_CLASS 0xFFFF
/***************************************
**
** Structure Definitions
**
*/
/*
** Resource Record Header Structure
*/
typedef struct dns_rr_header {
uint_32 LAST_TTL_CHECK;
struct dns_rr_header _PTR_ NEXT;
uchar _PTR_ DOMAIN_NAME_PTR;
int_32 TTL;
uint_16 CLASS;
uint_16 TYPE;
}DNS_RR_HEADER_STRUCT, _PTR_ DNS_RR_HEADER_STRUCT_PTR;
/*
** Record-specific data structures, traditional record types.
*/
typedef struct dns_addr_record_struct {
DNS_RR_HEADER_STRUCT RR;
_ip_address IPADDR;
}DNS_ADDR_RECORD_STRUCT, _PTR_ DNS_ADDR_RECORD_STRUCT_PTR;
typedef struct dns_name_record_struct {
DNS_RR_HEADER_STRUCT RR;
uchar _PTR_ ANS_NAME_PTR;
}DNS_NAME_RECORD_STRUCT, _PTR_ DNS_NAME_RECORD_STRUCT_PTR;
typedef struct dns_null_record_struct {
DNS_RR_HEADER_STRUCT RR;
uchar NULL_BUFFER[DNS_NULL_RECORD_SIZE];
}DNS_NULL_RECORD_STRUCT, _PTR_ DNS_NULL_RECORD_STRUCT_PTR;
/*
** Structure used to maintain the linked list of resource records.
** NAME_SIZE is used for parsing name into response buffers of
** correct size.
*/
typedef struct dns_rr_list_struct {
uchar _PTR_ NAME_PTR;
DNS_RR_HEADER_STRUCT _PTR_ RR_HEAD_PTR;
struct dns_rr_list_struct _PTR_ NEXT;
}DNS_RR_LIST_STRUCT, _PTR_ DNS_RR_LIST_STRUCT_PTR;
/*
** Domain Name Server Response Resource Record Structure
** This is defined to make writing a response easier. This section of
** the response buffer should have a name first, this information second,
** and then response information of RDLENGTH after the structure.
*/
typedef struct dns_response_rr_middle_struct {
uchar TYPE[2];
uchar CLASS[2];
uchar TTL[4];
uchar RDLENGTH[2];
}DNS_RESPONSE_RR_MIDDLE_STRUCT, _PTR_ DNS_RESPONSE_RR_MIDDLE_STRUCT_PTR;
/*
** Domain Name Server Message Header Structure
*/
typedef struct dns_message_header_struct {
uchar ID[2]; /* Identifier used to match replies to
outstanding queries */
uchar CONTROL[2]; /* Bits set to define query or response */
uchar QDCOUNT[2]; /* Number of entries in question section */
uchar ANCOUNT[2]; /* Number of RR's in answer section */
uchar NSCOUNT[2]; /* Number of Name Server RR's in the
authority records */
uchar ARCOUNT[2]; /* Number of RR's in the additional records */
}DNS_MESSAGE_HEADER_STRUCT, _PTR_ DNS_MESSAGE_HEADER_STRUCT_PTR;
/*
** Domain Name Server Message Tail Structure
*/
typedef struct dns_message_tail_struct {
uchar QTYPE[2];
uchar QCLASS[2];
}DNS_MESSAGE_TAIL_STRUCT, _PTR_ DNS_MESSAGE_TAIL_STRUCT_PTR;
/*
** Domain Name Server Server List Structure. This structure is used
** exclusively by the resolver to keep a list of Name Servers to connect
** to when a query is made. Used only in the Root Server Structure
*/
typedef struct dns_slist_struct {
char _PTR_ NAME_PTR;
struct dns_slist_struct _PTR_ NEXT;
_ip_address IPADDR;
uint_32 LAST_TTL_CHECK;
int_32 TTL;
uint_32 NUMBER_OF_HITS;
uint_32 NUMBER_OF_TRIES;
uint_32 AVG_RESPONSE_TIME;
uint_16 TYPE;
uint_16 CLASS;
}DNS_SLIST_STRUCT, _PTR_ DNS_SLIST_STRUCT_PTR;
/*
** Canonical Name Structure
*/
typedef struct dns_cname_struct {
uchar _PTR_ CNAME_PTR;
struct dns_cname_struct _PTR_ NEXT;
} DNS_CNAME_STRUCT, _PTR_ DNS_CNAME_STRUCT_PTR;
/*
** Domain Name Server Query Id Structure. This structure is used in a
** linked list of all outstanding queries.
** The entries are deleted when expired or answered.
*/
typedef struct dns_internal_query_struct {
_ip_address SERVER_IPADDR;
uint_16 QUERY_ID;
uint_16 CONTROL;
uint_16 QTYPE;
uint_16 QCLASS;
/*
** This field is to keep track of which query was the reason for an
** internal query.
*/
uint_16 ORIGINAL_QID;
uint_16 RESERVED;
int_32 TTL;
uint_32 QUERY_RETRIES;
uint_32 LAST_TTL_CHECK;
uchar _PTR_ QNAME_PTR;
DNS_CNAME_STRUCT _PTR_ CNAME;
struct dns_internal_query_struct _PTR_ NEXT;
sockaddr_in CLIENT_SIN;
boolean INTERNAL_QUERY;
} DNS_INTERNAL_QUERY_STRUCT, _PTR_ DNS_INTERNAL_QUERY_STRUCT_PTR;
/*
** DNS Configuration Structure. Used so DNS server and resolver functions
** only need to have one parameter passed to them and keep all necessary
** structures private.
*/
typedef struct dns_control_struct {
DNS_INTERNAL_QUERY_STRUCT _PTR_ NS_QUERY_HEAD_PTR;
DNS_INTERNAL_QUERY_STRUCT _PTR_ RES_QUERY_HEAD_PTR;
DNS_RR_LIST_STRUCT _PTR_ NS_ZONE_AUTH_LIST;
DNS_RR_LIST_STRUCT _PTR_ CACHE_PTR;
DNS_SLIST_STRUCT _PTR_ ROOT_SLIST_PTR;
DNS_SLIST_STRUCT _PTR_ LOCAL_SLIST_PTR;
uchar _PTR_ NS_BUFFER;
uchar _PTR_ RES_BUFFER;
int_32 NS_BUFFER_SIZE;
int_32 RES_BUFFER_SIZE;
uint_32 NS_SOCKET;
uint_32 RES_SOCKET;
boolean UPDATING;
_rtcs_mutex CACHE_MUTEX;
uint_32 NUM_NAMES_CACHED;
_rtcs_part INT_QUERY_PARTID;
_rtcs_part ADDR_RR_PARTID;
_rtcs_part NAME_RR_PARTID;
_rtcs_part RR_LIST_PARTID;
_rtcs_part CNAME_PARTID;
_rtcs_mutex SLIST_MUTEX;
} DNS_CONTROL_STRUCT, _PTR_ DNS_CONTROL_STRUCT_PTR;
/* Used to keep from blowing the stack in a recursive call */
typedef struct dns_recursive_cache_struct {
DNS_INTERNAL_QUERY_STRUCT _PTR_ NEW_QUERY_PTR;
DNS_CONTROL_STRUCT _PTR_ CONTROL_PTR;
DNS_RR_LIST_STRUCT _PTR_ CACHE_HEAD;
uchar _PTR_ NAME_PTR;
uchar _PTR_ BUFFER_PTR;
int_32 _PTR_ BUFFER_SIZE_PTR;
uint_32 NUM_TRIES;
} DNS_RECURSIVE_CACHE_STRUCT, _PTR_ DNS_RECURSIVE_CACHE_STRUCT_PTR;
/* Function definitions required by DNS_gethostbyname and DNS_gethostbyaddr */
DNS_RR_LIST_STRUCT _PTR_ DNS_dynamically_allocate_zone_list
(
DNS_CONTROL_STRUCT _PTR_ control_ptr
);
uint_32 DNS_is_dotted_domain_name
(
uchar _PTR_ domain_name,
uchar _PTR_ qname_buffer
);
uint_32 DNS_is_dotted_IP_addr
(
uchar _PTR_ addr_ptr,
uchar _PTR_ qname_buffer
);
HOSTENT_STRUCT _PTR_ DNS_parse_UDP_response
(
uchar _PTR_ buffer_ptr,
uchar _PTR_ name_ptr,
uint_16 query_type
);
HOSTENT_STRUCT _PTR_ DNS_query_resolver_task
(
uchar _PTR_ name,
uint_16 query_type
);
HOSTENT_STRUCT_PTR DNS_check_local_host_file
(
uchar _PTR_ name
);
uint_32 DNS_is_valid_domain_name
(
uchar _PTR_ buffer_ptr,
uchar _PTR_ domain_name,
uchar _PTR_ _PTR_ local_name_buffer
);
/*
* extern struct of initial root server information
*/
extern DNS_SLIST_STRUCT DNS_A_Root_server[];
extern char DNS_Local_network_name[];
extern uint_32 DNS_CACHE_NAME_LIMIT;
extern DNS_RR_LIST_STRUCT DNS_Zone_of_Authority_list[];
/* Start CR 2257 */
extern DNS_SLIST_STRUCT _PTR_ DNS_First_Local_server;
extern char DNS_Local_server_name[];
extern void DNS_init_slist_entry (DNS_SLIST_STRUCT _PTR_);
extern uint_32 DNS_append_slist_entry (DNS_SLIST_STRUCT _PTR_);
extern uint_32 DNS_prepend_slist_entry (DNS_SLIST_STRUCT _PTR_);
extern uint_32 DNS_remove_slist_entry (_ip_address);
extern DNS_SLIST_STRUCT _PTR_ DNS_find_slist_entry (_ip_address);
#define DNS_add_slist_entry(x) DNS_prepend_slist_entry(x)
/* End CR 2257 */
#endif
/* EOF */
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