952 lines
36 KiB
C
952 lines
36 KiB
C
/* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef APR_NETWORK_IO_H
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#define APR_NETWORK_IO_H
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/**
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* @file apr_network_io.h
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* @brief APR Network library
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*/
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#include "apr.h"
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#include "apr_pools.h"
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#include "apr_file_io.h"
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#include "apr_errno.h"
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#include "apr_inherit.h"
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#include "apr_perms_set.h"
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#if APR_HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#if APR_HAVE_SYS_UN_H
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#include <sys/un.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/**
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* @defgroup apr_network_io Network Routines
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* @ingroup APR
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* @{
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*/
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#ifndef APR_MAX_SECS_TO_LINGER
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/** Maximum seconds to linger */
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#define APR_MAX_SECS_TO_LINGER 30
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#endif
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#ifndef APRMAXHOSTLEN
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/** Maximum hostname length */
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#define APRMAXHOSTLEN 256
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#endif
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#ifndef APR_ANYADDR
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/** Default 'any' address */
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#define APR_ANYADDR "0.0.0.0"
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#endif
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/**
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* @defgroup apr_sockopt Socket option definitions
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* @{
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*/
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#define APR_SO_LINGER 1 /**< Linger */
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#define APR_SO_KEEPALIVE 2 /**< Keepalive */
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#define APR_SO_DEBUG 4 /**< Debug */
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#define APR_SO_NONBLOCK 8 /**< Non-blocking IO */
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#define APR_SO_REUSEADDR 16 /**< Reuse addresses */
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#define APR_SO_SNDBUF 64 /**< Send buffer */
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#define APR_SO_RCVBUF 128 /**< Receive buffer */
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#define APR_SO_DISCONNECTED 256 /**< Disconnected */
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#define APR_TCP_NODELAY 512 /**< For SCTP sockets, this is mapped
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* to STCP_NODELAY internally.
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*/
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#define APR_TCP_NOPUSH 1024 /**< No push */
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#define APR_RESET_NODELAY 2048 /**< This flag is ONLY set internally
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* when we set APR_TCP_NOPUSH with
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* APR_TCP_NODELAY set to tell us that
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* APR_TCP_NODELAY should be turned on
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* again when NOPUSH is turned off
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*/
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#define APR_INCOMPLETE_READ 4096 /**< Set on non-blocking sockets
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* (timeout != 0) on which the
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* previous read() did not fill a buffer
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* completely. the next apr_socket_recv()
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* will first call select()/poll() rather than
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* going straight into read(). (Can also
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* be set by an application to force a
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* select()/poll() call before the next
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* read, in cases where the app expects
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* that an immediate read would fail.)
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*/
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#define APR_INCOMPLETE_WRITE 8192 /**< like APR_INCOMPLETE_READ, but for write
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* @see APR_INCOMPLETE_READ
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*/
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#define APR_IPV6_V6ONLY 16384 /**< Don't accept IPv4 connections on an
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* IPv6 listening socket.
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*/
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#define APR_TCP_DEFER_ACCEPT 32768 /**< Delay accepting of new connections
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* until data is available.
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* @see apr_socket_accept_filter
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*/
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#define APR_SO_BROADCAST 65536 /**< Allow broadcast
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*/
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#define APR_SO_FREEBIND 131072 /**< Allow binding to addresses not owned
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* by any interface
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*/
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/** @} */
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/** Define what type of socket shutdown should occur. */
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typedef enum {
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APR_SHUTDOWN_READ, /**< no longer allow read request */
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APR_SHUTDOWN_WRITE, /**< no longer allow write requests */
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APR_SHUTDOWN_READWRITE /**< no longer allow read or write requests */
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} apr_shutdown_how_e;
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#define APR_IPV4_ADDR_OK 0x01 /**< @see apr_sockaddr_info_get() */
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#define APR_IPV6_ADDR_OK 0x02 /**< @see apr_sockaddr_info_get() */
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#if (!APR_HAVE_IN_ADDR)
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/**
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* We need to make sure we always have an in_addr type, so APR will just
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* define it ourselves, if the platform doesn't provide it.
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*/
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struct in_addr {
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apr_uint32_t s_addr; /**< storage to hold the IP# */
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};
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#endif
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/** @def APR_INADDR_NONE
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* Not all platforms have a real INADDR_NONE. This macro replaces
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* INADDR_NONE on all platforms.
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*/
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#ifdef INADDR_NONE
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#define APR_INADDR_NONE INADDR_NONE
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#else
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#define APR_INADDR_NONE ((unsigned int) 0xffffffff)
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#endif
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/**
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* @def APR_INET
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* Not all platforms have these defined, so we'll define them here
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* The default values come from FreeBSD 4.1.1
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*/
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#define APR_INET AF_INET
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/** @def APR_UNSPEC
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* Let the system decide which address family to use
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*/
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#ifdef AF_UNSPEC
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#define APR_UNSPEC AF_UNSPEC
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#else
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#define APR_UNSPEC 0
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#endif
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#if APR_HAVE_IPV6
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/** @def APR_INET6
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* IPv6 Address Family. Not all platforms may have this defined.
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*/
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#define APR_INET6 AF_INET6
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#endif
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#if APR_HAVE_SOCKADDR_UN
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#if defined (AF_UNIX)
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#define APR_UNIX AF_UNIX
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#elif defined(AF_LOCAL)
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#define APR_UNIX AF_LOCAL
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#else
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#error "Neither AF_UNIX nor AF_LOCAL is defined"
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#endif
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#else /* !APR_HAVE_SOCKADDR_UN */
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#if defined (AF_UNIX)
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#define APR_UNIX AF_UNIX
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#elif defined(AF_LOCAL)
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#define APR_UNIX AF_LOCAL
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#else
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/* TODO: Use a smarter way to detect unique APR_UNIX value */
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#define APR_UNIX 1234
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#endif
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#endif
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/**
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* @defgroup IP_Proto IP Protocol Definitions for use when creating sockets
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* @{
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*/
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#define APR_PROTO_TCP 6 /**< TCP */
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#define APR_PROTO_UDP 17 /**< UDP */
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#define APR_PROTO_SCTP 132 /**< SCTP */
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/** @} */
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/**
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* Enum used to denote either the local and remote endpoint of a
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* connection.
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*/
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typedef enum {
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APR_LOCAL, /**< Socket information for local end of connection */
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APR_REMOTE /**< Socket information for remote end of connection */
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} apr_interface_e;
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/**
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* The specific declaration of inet_addr's ... some platforms fall back
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* inet_network (this is not good, but necessary)
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*/
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#if APR_HAVE_INET_ADDR
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#define apr_inet_addr inet_addr
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#elif APR_HAVE_INET_NETWORK /* only DGUX, as far as I know */
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/**
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* @warning
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* not generally safe... inet_network() and inet_addr() perform
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* different functions */
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#define apr_inet_addr inet_network
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#endif
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/** A structure to represent sockets */
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typedef struct apr_socket_t apr_socket_t;
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/**
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* A structure to encapsulate headers and trailers for apr_socket_sendfile
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*/
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typedef struct apr_hdtr_t apr_hdtr_t;
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/** A structure to represent in_addr */
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typedef struct in_addr apr_in_addr_t;
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/** A structure to represent an IP subnet */
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typedef struct apr_ipsubnet_t apr_ipsubnet_t;
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/** @remark use apr_uint16_t just in case some system has a short that isn't 16 bits... */
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typedef apr_uint16_t apr_port_t;
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/** @remark It's defined here as I think it should all be platform safe...
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* @see apr_sockaddr_t
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*/
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typedef struct apr_sockaddr_t apr_sockaddr_t;
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/**
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* APRs socket address type, used to ensure protocol independence
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*/
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struct apr_sockaddr_t {
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/** The pool to use... */
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apr_pool_t *pool;
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/** The hostname */
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char *hostname;
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/** Either a string of the port number or the service name for the port */
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char *servname;
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/** The numeric port */
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apr_port_t port;
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/** The family */
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apr_int32_t family;
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/** How big is the sockaddr we're using? */
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apr_socklen_t salen;
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/** How big is the ip address structure we're using? */
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int ipaddr_len;
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/** How big should the address buffer be? 16 for v4 or 46 for v6
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* used in inet_ntop... */
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int addr_str_len;
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/** This points to the IP address structure within the appropriate
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* sockaddr structure. */
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void *ipaddr_ptr;
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/** If multiple addresses were found by apr_sockaddr_info_get(), this
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* points to a representation of the next address. */
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apr_sockaddr_t *next;
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/** Union of either IPv4 or IPv6 sockaddr. */
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union {
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/** IPv4 sockaddr structure */
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struct sockaddr_in sin;
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#if APR_HAVE_IPV6
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/** IPv6 sockaddr structure */
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struct sockaddr_in6 sin6;
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#endif
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#if APR_HAVE_SA_STORAGE
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/** Placeholder to ensure that the size of this union is not
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* dependent on whether APR_HAVE_IPV6 is defined. */
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struct sockaddr_storage sas;
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#endif
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#if APR_HAVE_SOCKADDR_UN
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/** Unix domain socket sockaddr structure */
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struct sockaddr_un unx;
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#endif
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} sa;
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};
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#if APR_HAS_SENDFILE
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/**
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* Support reusing the socket on platforms which support it (from disconnect,
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* specifically Win32.
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* @remark Optional flag passed into apr_socket_sendfile()
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*/
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#define APR_SENDFILE_DISCONNECT_SOCKET 1
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#endif
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/** A structure to encapsulate headers and trailers for apr_socket_sendfile */
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struct apr_hdtr_t {
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/** An iovec to store the headers sent before the file. */
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struct iovec* headers;
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/** number of headers in the iovec */
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int numheaders;
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/** An iovec to store the trailers sent after the file. */
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struct iovec* trailers;
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/** number of trailers in the iovec */
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int numtrailers;
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};
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/* function definitions */
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/**
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* Create a socket.
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* @param new_sock The new socket that has been set up.
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* @param family The address family of the socket (e.g., APR_INET).
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* @param type The type of the socket (e.g., SOCK_STREAM).
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* @param protocol The protocol of the socket (e.g., APR_PROTO_TCP).
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* @param cont The pool for the apr_socket_t and associated storage.
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* @note The pool will be used by various functions that operate on the
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* socket. The caller must ensure that it is not used by other threads
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* at the same time.
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*/
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APR_DECLARE(apr_status_t) apr_socket_create(apr_socket_t **new_sock,
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int family, int type,
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int protocol,
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apr_pool_t *cont);
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/**
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* Shutdown either reading, writing, or both sides of a socket.
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* @param thesocket The socket to close
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* @param how How to shutdown the socket. One of:
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* <PRE>
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* APR_SHUTDOWN_READ no longer allow read requests
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* APR_SHUTDOWN_WRITE no longer allow write requests
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* APR_SHUTDOWN_READWRITE no longer allow read or write requests
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* </PRE>
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* @see apr_shutdown_how_e
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* @remark This does not actually close the socket descriptor, it just
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* controls which calls are still valid on the socket.
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*/
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APR_DECLARE(apr_status_t) apr_socket_shutdown(apr_socket_t *thesocket,
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apr_shutdown_how_e how);
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/**
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* Close a socket.
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* @param thesocket The socket to close
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*/
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APR_DECLARE(apr_status_t) apr_socket_close(apr_socket_t *thesocket);
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/**
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* Bind the socket to its associated port
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* @param sock The socket to bind
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* @param sa The socket address to bind to
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* @remark This may be where we will find out if there is any other process
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* using the selected port.
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*/
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APR_DECLARE(apr_status_t) apr_socket_bind(apr_socket_t *sock,
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apr_sockaddr_t *sa);
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/**
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* Listen to a bound socket for connections.
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* @param sock The socket to listen on
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* @param backlog The number of outstanding connections allowed in the sockets
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* listen queue. If this value is less than zero, the listen
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* queue size is set to zero.
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*/
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APR_DECLARE(apr_status_t) apr_socket_listen(apr_socket_t *sock,
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apr_int32_t backlog);
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/**
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* Accept a new connection request
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* @param new_sock A copy of the socket that is connected to the socket that
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* made the connection request. This is the socket which should
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* be used for all future communication.
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* @param sock The socket we are listening on.
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* @param connection_pool The pool for the new socket.
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* @note The pool will be used by various functions that operate on the
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* socket. The caller must ensure that it is not used by other threads
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* at the same time.
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*/
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APR_DECLARE(apr_status_t) apr_socket_accept(apr_socket_t **new_sock,
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apr_socket_t *sock,
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apr_pool_t *connection_pool);
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/**
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* Issue a connection request to a socket either on the same machine
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* or a different one.
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* @param sock The socket we wish to use for our side of the connection
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* @param sa The address of the machine we wish to connect to.
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*/
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APR_DECLARE(apr_status_t) apr_socket_connect(apr_socket_t *sock,
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apr_sockaddr_t *sa);
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/**
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* Determine whether the receive part of the socket has been closed by
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* the peer (such that a subsequent call to apr_socket_read would
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* return APR_EOF), if the socket's receive buffer is empty. This
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* function does not block waiting for I/O.
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*
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* @param sock The socket to check
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* @param atreadeof If APR_SUCCESS is returned, *atreadeof is set to
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* non-zero if a subsequent read would return APR_EOF
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* @return an error is returned if it was not possible to determine the
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* status, in which case *atreadeof is not changed.
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*/
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APR_DECLARE(apr_status_t) apr_socket_atreadeof(apr_socket_t *sock,
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int *atreadeof);
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/**
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* Create apr_sockaddr_t from hostname, address family, and port.
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* @param sa The new apr_sockaddr_t.
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* @param hostname The hostname or numeric address string to resolve/parse, or
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* NULL to build an address that corresponds to 0.0.0.0 or ::
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* or in case of APR_UNIX family it is absolute socket filename.
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* @param family The address family to use, or APR_UNSPEC if the system should
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* decide.
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* @param port The port number.
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* @param flags Special processing flags:
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* <PRE>
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* APR_IPV4_ADDR_OK first query for IPv4 addresses; only look
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* for IPv6 addresses if the first query failed;
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* only valid if family is APR_UNSPEC and hostname
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* isn't NULL; mutually exclusive with
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* APR_IPV6_ADDR_OK
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* APR_IPV6_ADDR_OK first query for IPv6 addresses; only look
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* for IPv4 addresses if the first query failed;
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* only valid if family is APR_UNSPEC and hostname
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* isn't NULL and APR_HAVE_IPV6; mutually exclusive
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* with APR_IPV4_ADDR_OK
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* </PRE>
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* @param p The pool for the apr_sockaddr_t and associated storage.
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*/
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APR_DECLARE(apr_status_t) apr_sockaddr_info_get(apr_sockaddr_t **sa,
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const char *hostname,
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apr_int32_t family,
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apr_port_t port,
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apr_int32_t flags,
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apr_pool_t *p);
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/**
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* Copy apr_sockaddr_t src to dst on pool p.
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* @param dst The destination apr_sockaddr_t.
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* @param src The source apr_sockaddr_t.
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* @param p The pool for the apr_sockaddr_t and associated storage.
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*/
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APR_DECLARE(apr_status_t) apr_sockaddr_info_copy(apr_sockaddr_t **dst,
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const apr_sockaddr_t *src,
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apr_pool_t *p);
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/* Set the zone of an IPv6 link-local address object.
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* @param sa Socket address object
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* @param zone_id Zone ID (textual "eth0" or numeric "3").
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* @return Returns APR_EBADIP for non-IPv6 socket or an IPv6 address
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* which isn't link-local.
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*/
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APR_DECLARE(apr_status_t) apr_sockaddr_zone_set(apr_sockaddr_t *sa,
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const char *zone_id);
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/* Retrieve the zone of an IPv6 link-local address object.
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* @param sa Socket address object
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* @param name If non-NULL, set to the textual representation of the zone id
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* @param id If non-NULL, set to the integer zone id
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* @param p Pool from which *name is allocated if used.
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* @return Returns APR_EBADIP for non-IPv6 socket or socket without any zone id
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* set, or other error if the interface could not be mapped to a name.
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* @remark Both name and id may be NULL, neither are modified if
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* non-NULL in error cases.
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*/
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APR_DECLARE(apr_status_t) apr_sockaddr_zone_get(const apr_sockaddr_t *sa,
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const char **name,
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apr_uint32_t *id,
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apr_pool_t *p);
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/**
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* Look up the host name from an apr_sockaddr_t.
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* @param hostname The hostname.
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* @param sa The apr_sockaddr_t.
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* @param flags Special processing flags.
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* @remark Results can vary significantly between platforms
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* when processing wildcard socket addresses.
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*/
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APR_DECLARE(apr_status_t) apr_getnameinfo(char **hostname,
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apr_sockaddr_t *sa,
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apr_int32_t flags);
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/**
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* Parse hostname/IP address with scope id and port.
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*
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* Any of the following strings are accepted:
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* 8080 (just the port number)
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* www.apache.org (just the hostname)
|
|
* www.apache.org:8080 (hostname and port number)
|
|
* [fe80::1]:80 (IPv6 numeric address string only)
|
|
* [fe80::1%eth0] (IPv6 numeric address string and scope id)
|
|
*
|
|
* Invalid strings:
|
|
* (empty string)
|
|
* [abc] (not valid IPv6 numeric address string)
|
|
* abc:65536 (invalid port number)
|
|
*
|
|
* @param addr The new buffer containing just the hostname. On output, *addr
|
|
* will be NULL if no hostname/IP address was specfied.
|
|
* @param scope_id The new buffer containing just the scope id. On output,
|
|
* *scope_id will be NULL if no scope id was specified.
|
|
* @param port The port number. On output, *port will be 0 if no port was
|
|
* specified.
|
|
* ### FIXME: 0 is a legal port (per RFC 1700). this should
|
|
* ### return something besides zero if the port is missing.
|
|
* @param str The input string to be parsed.
|
|
* @param p The pool from which *addr and *scope_id are allocated.
|
|
* @remark If scope id shouldn't be allowed, check for scope_id != NULL in
|
|
* addition to checking the return code. If addr/hostname should be
|
|
* required, check for addr == NULL in addition to checking the
|
|
* return code.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_parse_addr_port(char **addr,
|
|
char **scope_id,
|
|
apr_port_t *port,
|
|
const char *str,
|
|
apr_pool_t *p);
|
|
|
|
/**
|
|
* Get name of the current machine
|
|
* @param buf A buffer to store the hostname in.
|
|
* @param len The maximum length of the hostname that can be stored in the
|
|
* buffer provided. The suggested length is APRMAXHOSTLEN + 1.
|
|
* @param cont The pool to use.
|
|
* @remark If the buffer was not large enough, an error will be returned.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_gethostname(char *buf, int len, apr_pool_t *cont);
|
|
|
|
/**
|
|
* Return the data associated with the current socket
|
|
* @param data The user data associated with the socket.
|
|
* @param key The key to associate with the user data.
|
|
* @param sock The currently open socket.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_data_get(void **data, const char *key,
|
|
apr_socket_t *sock);
|
|
|
|
/**
|
|
* Set the data associated with the current socket.
|
|
* @param sock The currently open socket.
|
|
* @param data The user data to associate with the socket.
|
|
* @param key The key to associate with the data.
|
|
* @param cleanup The cleanup to call when the socket is destroyed.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_data_set(apr_socket_t *sock, void *data,
|
|
const char *key,
|
|
apr_status_t (*cleanup)(void*));
|
|
|
|
/**
|
|
* Send data over a network.
|
|
* @param sock The socket to send the data over.
|
|
* @param buf The buffer which contains the data to be sent.
|
|
* @param len On entry, the number of bytes to send; on exit, the number
|
|
* of bytes sent.
|
|
* @remark
|
|
* <PRE>
|
|
* This functions acts like a blocking write by default. To change
|
|
* this behavior, use apr_socket_timeout_set() or the APR_SO_NONBLOCK
|
|
* socket option.
|
|
*
|
|
* It is possible for both bytes to be sent and an error to be returned.
|
|
*
|
|
* APR_EINTR is never returned.
|
|
* </PRE>
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_send(apr_socket_t *sock, const char *buf,
|
|
apr_size_t *len);
|
|
|
|
/**
|
|
* Send multiple buffers over a network.
|
|
* @param sock The socket to send the data over.
|
|
* @param vec The array of iovec structs containing the data to send
|
|
* @param nvec The number of iovec structs in the array
|
|
* @param len Receives the number of bytes actually written
|
|
* @remark
|
|
* <PRE>
|
|
* This functions acts like a blocking write by default. To change
|
|
* this behavior, use apr_socket_timeout_set() or the APR_SO_NONBLOCK
|
|
* socket option.
|
|
* The number of bytes actually sent is stored in argument 4.
|
|
*
|
|
* It is possible for both bytes to be sent and an error to be returned.
|
|
*
|
|
* APR_EINTR is never returned.
|
|
* </PRE>
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_sendv(apr_socket_t *sock,
|
|
const struct iovec *vec,
|
|
apr_int32_t nvec, apr_size_t *len);
|
|
|
|
/**
|
|
* @param sock The socket to send from
|
|
* @param where The apr_sockaddr_t describing where to send the data
|
|
* @param flags The flags to use
|
|
* @param buf The data to send
|
|
* @param len The length of the data to send
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_sendto(apr_socket_t *sock,
|
|
apr_sockaddr_t *where,
|
|
apr_int32_t flags, const char *buf,
|
|
apr_size_t *len);
|
|
|
|
/**
|
|
* Read data from a socket. On success, the address of the peer from
|
|
* which the data was sent is copied into the @a from parameter, and the
|
|
* @a len parameter is updated to give the number of bytes written to
|
|
* @a buf.
|
|
*
|
|
* @param from Updated with the address from which the data was received
|
|
* @param sock The socket to use
|
|
* @param flags The flags to use
|
|
* @param buf The buffer to use
|
|
* @param len The length of the available buffer
|
|
*/
|
|
|
|
APR_DECLARE(apr_status_t) apr_socket_recvfrom(apr_sockaddr_t *from,
|
|
apr_socket_t *sock,
|
|
apr_int32_t flags, char *buf,
|
|
apr_size_t *len);
|
|
|
|
#if APR_HAS_SENDFILE || defined(DOXYGEN)
|
|
|
|
/**
|
|
* Send a file from an open file descriptor to a socket, along with
|
|
* optional headers and trailers
|
|
* @param sock The socket to which we're writing
|
|
* @param file The open file from which to read
|
|
* @param hdtr A structure containing the headers and trailers to send
|
|
* @param offset Offset into the file where we should begin writing
|
|
* @param len (input) - Number of bytes to send from the file
|
|
* (output) - Number of bytes actually sent,
|
|
* including headers, file, and trailers
|
|
* @param flags APR flags that are mapped to OS specific flags
|
|
* @remark This functions acts like a blocking write by default. To change
|
|
* this behavior, use apr_socket_timeout_set() or the
|
|
* APR_SO_NONBLOCK socket option.
|
|
* The number of bytes actually sent is stored in the len parameter.
|
|
* The offset parameter is passed by reference for no reason; its
|
|
* value will never be modified by the apr_socket_sendfile() function.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_sendfile(apr_socket_t *sock,
|
|
apr_file_t *file,
|
|
apr_hdtr_t *hdtr,
|
|
apr_off_t *offset,
|
|
apr_size_t *len,
|
|
apr_int32_t flags);
|
|
|
|
#endif /* APR_HAS_SENDFILE */
|
|
|
|
/**
|
|
* Read data from a network.
|
|
* @param sock The socket to read the data from.
|
|
* @param buf The buffer to store the data in.
|
|
* @param len On entry, the number of bytes to receive; on exit, the number
|
|
* of bytes received.
|
|
* @remark
|
|
* <PRE>
|
|
* This functions acts like a blocking read by default. To change
|
|
* this behavior, use apr_socket_timeout_set() or the APR_SO_NONBLOCK
|
|
* socket option.
|
|
* The number of bytes actually received is stored in argument 3.
|
|
*
|
|
* It is possible for both bytes to be received and an APR_EOF or
|
|
* other error to be returned.
|
|
*
|
|
* APR_EINTR is never returned.
|
|
* </PRE>
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_recv(apr_socket_t *sock,
|
|
char *buf, apr_size_t *len);
|
|
|
|
/**
|
|
* Setup socket options for the specified socket
|
|
* @param sock The socket to set up.
|
|
* @param opt The option we would like to configure. One of:
|
|
* <PRE>
|
|
* APR_SO_DEBUG -- turn on debugging information
|
|
* APR_SO_KEEPALIVE -- keep connections active
|
|
* APR_SO_LINGER -- lingers on close if data is present
|
|
* APR_SO_NONBLOCK -- Turns blocking on/off for socket
|
|
* When this option is enabled, use
|
|
* the APR_STATUS_IS_EAGAIN() macro to
|
|
* see if a send or receive function
|
|
* could not transfer data without
|
|
* blocking.
|
|
* APR_SO_REUSEADDR -- The rules used in validating addresses
|
|
* supplied to bind should allow reuse
|
|
* of local addresses.
|
|
* APR_SO_SNDBUF -- Set the SendBufferSize
|
|
* APR_SO_RCVBUF -- Set the ReceiveBufferSize
|
|
* APR_SO_FREEBIND -- Allow binding to non-local IP address.
|
|
* </PRE>
|
|
* @param on Value for the option.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_opt_set(apr_socket_t *sock,
|
|
apr_int32_t opt, apr_int32_t on);
|
|
|
|
/**
|
|
* Setup socket timeout for the specified socket
|
|
* @param sock The socket to set up.
|
|
* @param t Value for the timeout.
|
|
* <PRE>
|
|
* t > 0 -- read and write calls return APR_TIMEUP if specified time
|
|
* elapsess with no data read or written
|
|
* t == 0 -- read and write calls never block
|
|
* t < 0 -- read and write calls block
|
|
* </PRE>
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_timeout_set(apr_socket_t *sock,
|
|
apr_interval_time_t t);
|
|
|
|
/**
|
|
* Query socket options for the specified socket
|
|
* @param sock The socket to query
|
|
* @param opt The option we would like to query. One of:
|
|
* <PRE>
|
|
* APR_SO_DEBUG -- turn on debugging information
|
|
* APR_SO_KEEPALIVE -- keep connections active
|
|
* APR_SO_LINGER -- lingers on close if data is present
|
|
* APR_SO_NONBLOCK -- Turns blocking on/off for socket
|
|
* APR_SO_REUSEADDR -- The rules used in validating addresses
|
|
* supplied to bind should allow reuse
|
|
* of local addresses.
|
|
* APR_SO_SNDBUF -- Set the SendBufferSize
|
|
* APR_SO_RCVBUF -- Set the ReceiveBufferSize
|
|
* APR_SO_DISCONNECTED -- Query the disconnected state of the socket.
|
|
* (Currently only used on Windows)
|
|
* </PRE>
|
|
* @param on Socket option returned on the call.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_opt_get(apr_socket_t *sock,
|
|
apr_int32_t opt, apr_int32_t *on);
|
|
|
|
/**
|
|
* Query socket timeout for the specified socket
|
|
* @param sock The socket to query
|
|
* @param t Socket timeout returned from the query.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_timeout_get(apr_socket_t *sock,
|
|
apr_interval_time_t *t);
|
|
|
|
/**
|
|
* Query the specified socket if at the OOB/Urgent data mark
|
|
* @param sock The socket to query
|
|
* @param atmark Is set to true if socket is at the OOB/urgent mark,
|
|
* otherwise is set to false.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_atmark(apr_socket_t *sock,
|
|
int *atmark);
|
|
|
|
/**
|
|
* Return an address associated with a socket; either the address to
|
|
* which the socket is bound locally or the address of the peer
|
|
* to which the socket is connected.
|
|
* @param sa The returned apr_sockaddr_t.
|
|
* @param which Whether to retrieve the local or remote address
|
|
* @param sock The socket to use
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_addr_get(apr_sockaddr_t **sa,
|
|
apr_interface_e which,
|
|
apr_socket_t *sock);
|
|
|
|
/**
|
|
* Return the IP address (in numeric address string format) in
|
|
* an APR socket address. APR will allocate storage for the IP address
|
|
* string from the pool of the apr_sockaddr_t.
|
|
* @param addr The IP address.
|
|
* @param sockaddr The socket address to reference.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_sockaddr_ip_get(char **addr,
|
|
apr_sockaddr_t *sockaddr);
|
|
|
|
/**
|
|
* Write the IP address (in numeric address string format) of the APR
|
|
* socket address @a sockaddr into the buffer @a buf (of size @a buflen).
|
|
* @param sockaddr The socket address to reference.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_sockaddr_ip_getbuf(char *buf, apr_size_t buflen,
|
|
apr_sockaddr_t *sockaddr);
|
|
|
|
/**
|
|
* See if the IP addresses in two APR socket addresses are
|
|
* equivalent. Appropriate logic is present for comparing
|
|
* IPv4-mapped IPv6 addresses with IPv4 addresses.
|
|
*
|
|
* @param addr1 One of the APR socket addresses.
|
|
* @param addr2 The other APR socket address.
|
|
* @remark The return value will be non-zero if the addresses
|
|
* are equivalent.
|
|
*/
|
|
APR_DECLARE(int) apr_sockaddr_equal(const apr_sockaddr_t *addr1,
|
|
const apr_sockaddr_t *addr2);
|
|
|
|
/**
|
|
* See if the IP address in an APR socket address refers to the wildcard
|
|
* address for the protocol family (e.g., INADDR_ANY for IPv4).
|
|
*
|
|
* @param addr The APR socket address to examine.
|
|
* @remark The return value will be non-zero if the address is
|
|
* initialized and is the wildcard address.
|
|
*/
|
|
APR_DECLARE(int) apr_sockaddr_is_wildcard(const apr_sockaddr_t *addr);
|
|
|
|
/**
|
|
* Return the type of the socket.
|
|
* @param sock The socket to query.
|
|
* @param type The returned type (e.g., SOCK_STREAM).
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_type_get(apr_socket_t *sock,
|
|
int *type);
|
|
|
|
/**
|
|
* Given an apr_sockaddr_t and a service name, set the port for the service
|
|
* @param sockaddr The apr_sockaddr_t that will have its port set
|
|
* @param servname The name of the service you wish to use
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_getservbyname(apr_sockaddr_t *sockaddr,
|
|
const char *servname);
|
|
/**
|
|
* Build an ip-subnet representation from an IP address and optional netmask or
|
|
* number-of-bits.
|
|
* @param ipsub The new ip-subnet representation
|
|
* @param ipstr The input IP address string
|
|
* @param mask_or_numbits The input netmask or number-of-bits string, or NULL
|
|
* @param p The pool to allocate from
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_ipsubnet_create(apr_ipsubnet_t **ipsub,
|
|
const char *ipstr,
|
|
const char *mask_or_numbits,
|
|
apr_pool_t *p);
|
|
|
|
/**
|
|
* Test the IP address in an apr_sockaddr_t against a pre-built ip-subnet
|
|
* representation.
|
|
* @param ipsub The ip-subnet representation
|
|
* @param sa The socket address to test
|
|
* @return non-zero if the socket address is within the subnet, 0 otherwise
|
|
*/
|
|
APR_DECLARE(int) apr_ipsubnet_test(apr_ipsubnet_t *ipsub, apr_sockaddr_t *sa);
|
|
|
|
#if APR_HAS_SO_ACCEPTFILTER || defined(DOXYGEN)
|
|
/**
|
|
* Set an OS level accept filter.
|
|
* @param sock The socket to put the accept filter on.
|
|
* @param name The accept filter
|
|
* @param args Any extra args to the accept filter. Passing NULL here removes
|
|
* the accept filter.
|
|
* @bug name and args should have been declared as const char *, as they are in
|
|
* APR 2.0
|
|
*/
|
|
apr_status_t apr_socket_accept_filter(apr_socket_t *sock, char *name,
|
|
char *args);
|
|
#endif
|
|
|
|
/**
|
|
* Return the protocol of the socket.
|
|
* @param sock The socket to query.
|
|
* @param protocol The returned protocol (e.g., APR_PROTO_TCP).
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_socket_protocol_get(apr_socket_t *sock,
|
|
int *protocol);
|
|
|
|
/**
|
|
* Get the pool used by the socket.
|
|
*/
|
|
APR_POOL_DECLARE_ACCESSOR(socket);
|
|
|
|
/**
|
|
* Set a socket to be inherited by child processes.
|
|
*/
|
|
APR_DECLARE_INHERIT_SET(socket);
|
|
|
|
/**
|
|
* Unset a socket from being inherited by child processes.
|
|
*/
|
|
APR_DECLARE_INHERIT_UNSET(socket);
|
|
|
|
/**
|
|
* Set socket permissions.
|
|
*/
|
|
APR_PERMS_SET_IMPLEMENT(socket);
|
|
|
|
/**
|
|
* @defgroup apr_mcast IP Multicast
|
|
* @{
|
|
*/
|
|
|
|
/**
|
|
* Join a Multicast Group
|
|
* @param sock The socket to join a multicast group
|
|
* @param join The address of the multicast group to join
|
|
* @param iface Address of the interface to use. If NULL is passed, the
|
|
* default multicast interface will be used. (OS Dependent)
|
|
* @param source Source Address to accept transmissions from (non-NULL
|
|
* implies Source-Specific Multicast)
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_mcast_join(apr_socket_t *sock,
|
|
apr_sockaddr_t *join,
|
|
apr_sockaddr_t *iface,
|
|
apr_sockaddr_t *source);
|
|
|
|
/**
|
|
* Leave a Multicast Group. All arguments must be the same as
|
|
* apr_mcast_join.
|
|
* @param sock The socket to leave a multicast group
|
|
* @param addr The address of the multicast group to leave
|
|
* @param iface Address of the interface to use. If NULL is passed, the
|
|
* default multicast interface will be used. (OS Dependent)
|
|
* @param source Source Address to accept transmissions from (non-NULL
|
|
* implies Source-Specific Multicast)
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_mcast_leave(apr_socket_t *sock,
|
|
apr_sockaddr_t *addr,
|
|
apr_sockaddr_t *iface,
|
|
apr_sockaddr_t *source);
|
|
|
|
/**
|
|
* Set the Multicast Time to Live (ttl) for a multicast transmission.
|
|
* @param sock The socket to set the multicast ttl
|
|
* @param ttl Time to live to Assign. 0-255, default=1
|
|
* @remark If the TTL is 0, packets will only be seen by sockets on
|
|
* the local machine, and only when multicast loopback is enabled.
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_mcast_hops(apr_socket_t *sock,
|
|
apr_byte_t ttl);
|
|
|
|
/**
|
|
* Toggle IP Multicast Loopback
|
|
* @param sock The socket to set multicast loopback
|
|
* @param opt 0=disable, 1=enable
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_mcast_loopback(apr_socket_t *sock,
|
|
apr_byte_t opt);
|
|
|
|
|
|
/**
|
|
* Set the Interface to be used for outgoing Multicast Transmissions.
|
|
* @param sock The socket to set the multicast interface on
|
|
* @param iface Address of the interface to use for Multicast
|
|
*/
|
|
APR_DECLARE(apr_status_t) apr_mcast_interface(apr_socket_t *sock,
|
|
apr_sockaddr_t *iface);
|
|
|
|
/** @} */
|
|
|
|
/** @} */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* ! APR_NETWORK_IO_H */
|
|
|