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296 lines
12 KiB
C
296 lines
12 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef prnetdb_h___
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#define prnetdb_h___
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#include "prtypes.h"
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#include "prio.h"
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PR_BEGIN_EXTERN_C
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/*
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*********************************************************************
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* Translate an Internet address to/from a character string
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*********************************************************************
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*/
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PR_EXTERN(PRStatus) PR_StringToNetAddr(
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const char *string, PRNetAddr *addr);
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PR_EXTERN(PRStatus) PR_NetAddrToString(
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const PRNetAddr *addr, char *string, PRUint32 size);
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/*
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** Structures returned by network data base library. All addresses are
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** supplied in host order, and returned in network order (suitable for
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** use in system calls).
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*/
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/*
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** Beware that WINSOCK.H defines h_addrtype and h_length as short.
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** Client code does direct struct copies of hostent to PRHostEnt and
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** hence the ifdef.
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*/
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typedef struct PRHostEnt {
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char *h_name; /* official name of host */
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char **h_aliases; /* alias list */
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#if defined(WIN32) || defined(WIN16)
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PRInt16 h_addrtype; /* host address type */
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PRInt16 h_length; /* length of address */
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#else
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PRInt32 h_addrtype; /* host address type */
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PRInt32 h_length; /* length of address */
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#endif
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char **h_addr_list; /* list of addresses from name server */
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} PRHostEnt;
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/* A safe size to use that will mostly work... */
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#if (defined(AIX) && defined(_THREAD_SAFE)) || defined(OSF1)
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#define PR_NETDB_BUF_SIZE sizeof(struct protoent_data)
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#else
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#define PR_NETDB_BUF_SIZE 1024
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#endif
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/***********************************************************************
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** FUNCTION:
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** DESCRIPTION: PR_GetHostByName()
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** Lookup a host by name.
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**
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** INPUTS:
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** char *hostname Character string defining the host name of interest
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** char *buf A scratch buffer for the runtime to return result.
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** This buffer is allocated by the caller.
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** PRIntn bufsize Number of bytes in 'buf'. A recommnded value to
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** use is PR_NETDB_BUF_SIZE.
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** OUTPUTS:
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** PRHostEnt *hostentry
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** This structure is filled in by the runtime if
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** the function returns PR_SUCCESS. This structure
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** is allocated by the caller.
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** RETURN:
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** PRStatus PR_SUCCESS if the lookup succeeds. If it fails
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** the result will be PR_FAILURE and the reason
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** for the failure can be retrieved by PR_GetError().
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***********************************************************************/
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PR_EXTERN(PRStatus) PR_GetHostByName(
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const char *hostname, char *buf, PRIntn bufsize, PRHostEnt *hostentry);
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/***********************************************************************
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** FUNCTION:
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** DESCRIPTION: PR_GetHostByAddr()
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** Lookup a host entry by its network address.
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**
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** INPUTS:
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** char *hostaddr IP address of host in question
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** char *buf A scratch buffer for the runtime to return result.
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** This buffer is allocated by the caller.
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** PRIntn bufsize Number of bytes in 'buf'. A recommnded value to
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** use is PR_NETDB_BUF_SIZE.
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** OUTPUTS:
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** PRHostEnt *hostentry
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** This structure is filled in by the runtime if
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** the function returns PR_SUCCESS. This structure
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** is allocated by the caller.
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** RETURN:
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** PRStatus PR_SUCCESS if the lookup succeeds. If it fails
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** the result will be PR_FAILURE and the reason
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** for the failure can be retrieved by PR_GetError().
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***********************************************************************/
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PR_EXTERN(PRStatus) PR_GetHostByAddr(
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const PRNetAddr *hostaddr, char *buf, PRIntn bufsize, PRHostEnt *hostentry);
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/***********************************************************************
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** FUNCTION: PR_EnumerateHostEnt()
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** DESCRIPTION:
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** A stateless enumerator over a PRHostEnt structure acquired from
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** PR_GetHostByName() PR_GetHostByAddr() to evaluate the possible
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** network addresses.
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**
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** INPUTS:
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** PRIntn enumIndex Index of the enumeration. The enumeration starts
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** and ends with a value of zero.
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**
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** PRHostEnt *hostEnt A pointer to a host entry struct that was
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** previously returned by PR_GetHostByName() or
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** PR_GetHostByAddr().
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**
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** PRUint16 port The port number to be assigned as part of the
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** PRNetAddr.
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**
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** OUTPUTS:
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** PRNetAddr *address A pointer to an address structure that will be
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** filled in by the call to the enumeration if the
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** result of the call is greater than zero.
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**
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** RETURN:
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** PRIntn The value that should be used for the next call
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** of the enumerator ('enumIndex'). The enumeration
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** is ended if this value is returned zero.
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** If a value of -1 is returned, the enumeration
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** has failed. The reason for the failure can be
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** retrieved by calling PR_GetError().
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***********************************************************************/
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PR_EXTERN(PRIntn) PR_EnumerateHostEnt(
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PRIntn enumIndex, const PRHostEnt *hostEnt, PRUint16 port, PRNetAddr *address);
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/***********************************************************************
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** FUNCTION: PR_InitializeNetAddr(),
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** DESCRIPTION:
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** Initialize the fields of a PRNetAddr, assigning well known values as
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** appropriate.
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**
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** INPUTS
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** PRNetAddrValue val The value to be assigned to the IP Address portion
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** of the network address. This can only specify the
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** special well known values that are equivalent to
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** INADDR_ANY and INADDR_LOOPBACK.
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**
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** PRUInt16 port The port number to be assigned in the structure.
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**
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** OUTPUTS:
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** PRNetAddr *addr The address to be manipulated.
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**
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** RETURN:
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** PRStatus To indicate success or failure. If the latter, the
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** reason for the failure can be retrieved by calling
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** PR_GetError();
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***********************************************************************/
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typedef enum PRNetAddrValue
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{
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PR_IpAddrNull, /* do NOT overwrite the IP address */
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PR_IpAddrAny, /* assign logical INADDR_ANY to IP address */
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PR_IpAddrLoopback /* assign logical INADDR_LOOPBACK */
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} PRNetAddrValue;
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PR_EXTERN(PRStatus) PR_InitializeNetAddr(
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PRNetAddrValue val, PRUint16 port, PRNetAddr *addr);
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/***********************************************************************
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** FUNCTION:
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** DESCRIPTION: PR_GetProtoByName()
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** Lookup a protocol entry based on protocol's name
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**
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** INPUTS:
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** char *protocolname Character string of the protocol's name.
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** char *buf A scratch buffer for the runtime to return result.
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** This buffer is allocated by the caller.
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** PRIntn bufsize Number of bytes in 'buf'. A recommnded value to
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** use is PR_NETDB_BUF_SIZE.
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** OUTPUTS:
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** PRHostEnt *PRProtoEnt
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** This structure is filled in by the runtime if
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** the function returns PR_SUCCESS. This structure
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** is allocated by the caller.
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** RETURN:
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** PRStatus PR_SUCCESS if the lookup succeeds. If it fails
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** the result will be PR_FAILURE and the reason
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** for the failure can be retrieved by PR_GetError().
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***********************************************************************/
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typedef struct PRProtoEnt {
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char *p_name; /* official protocol name */
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char **p_aliases; /* alias list */
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#if defined(WIN32) || defined(WIN16)
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PRInt16 p_num; /* protocol # */
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#else
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PRInt32 p_num; /* protocol # */
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#endif
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} PRProtoEnt;
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PR_EXTERN(PRStatus) PR_GetProtoByName(
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const char* protocolname, char* buffer, PRInt32 bufsize, PRProtoEnt* result);
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/***********************************************************************
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** FUNCTION:
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** DESCRIPTION: PR_GetProtoByNumber()
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** Lookup a protocol entry based on protocol's number
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**
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** INPUTS:
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** PRInt32 protocolnumber
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** Number assigned to the protocol.
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** char *buf A scratch buffer for the runtime to return result.
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** This buffer is allocated by the caller.
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** PRIntn bufsize Number of bytes in 'buf'. A recommnded value to
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** use is PR_NETDB_BUF_SIZE.
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** OUTPUTS:
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** PRHostEnt *PRProtoEnt
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** This structure is filled in by the runtime if
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** the function returns PR_SUCCESS. This structure
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** is allocated by the caller.
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** RETURN:
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** PRStatus PR_SUCCESS if the lookup succeeds. If it fails
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** the result will be PR_FAILURE and the reason
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** for the failure can be retrieved by PR_GetError().
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***********************************************************************/
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PR_EXTERN(PRStatus) PR_GetProtoByNumber(
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PRInt32 protocolnumber, char* buffer, PRInt32 bufsize, PRProtoEnt* result);
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/***********************************************************************
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** FUNCTION:
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** DESCRIPTION: PR_SetIPv6Enable()
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** Enable IPv6 capability on a platform that supports the architecture.
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**
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** Note: IPv6 must first be enabled for the host platform. If it is not,
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** the function will always return PR_FAILURE on any attempt to
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** change the setting.
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**
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** INPUTS:
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** PRBool itIs
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** Assign it a value of PR_TRUE to turn on IPv6
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** addressing, PR_FALSE to turn it off.
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** RETURN:
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** PRStatus PR_SUCCESS if the IPv6 is enabled for this particular
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** host. Otherwise it will return failure and GetError()
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** will confirm the result by indicating that the
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** protocol is not supported
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** (PR_PROTOCOL_NOT_SUPPORTED_ERROR)
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***********************************************************************/
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PR_EXTERN(PRStatus) PR_SetIPv6Enable(PRBool itIs);
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/***********************************************************************
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** FUNCTIONS: PR_ntohs, PR_ntohl, PR_ntohll, PR_htons, PR_htonl, PR_htonll
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**
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** DESCRIPTION: API entries for the common byte ordering routines.
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**
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** PR_ntohs 16 bit conversion from network to host
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** PR_ntohl 32 bit conversion from network to host
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** PR_ntohll 64 bit conversion from network to host
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** PR_htons 16 bit conversion from host to network
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** PR_htonl 32 bit conversion from host to network
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** PR_ntonll 64 bit conversion from host to network
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**
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***********************************************************************/
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PR_EXTERN(PRUint16) PR_ntohs(PRUint16);
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PR_EXTERN(PRUint32) PR_ntohl(PRUint32);
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PR_EXTERN(PRUint64) PR_ntohll(PRUint64);
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PR_EXTERN(PRUint16) PR_htons(PRUint16);
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PR_EXTERN(PRUint32) PR_htonl(PRUint32);
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PR_EXTERN(PRUint64) PR_htonll(PRUint64);
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/***********************************************************************
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** FUNCTION: PR_FamilyInet
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**
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** DESCRIPTION: Routine to get value of address family for Internet Protocol
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**
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***********************************************************************/
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PR_EXTERN(PRUint16) PR_FamilyInet(void);
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PR_END_EXTERN_C
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#endif /* prnetdb_h___ */
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