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netinet/in.h :
Код |
/* Copyright (C) 1991-1999, 2000, 2001, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */
#ifndef _NETINET_IN_H #define _NETINET_IN_H 1
#include <features.h> #include <stdint.h> #include <sys/socket.h> #include <bits/types.h>
__BEGIN_DECLS
/* Standard well-defined IP protocols. */ enum { IPPROTO_IP = 0, /* Dummy protocol for TCP. */ #define IPPROTO_IP IPPROTO_IP IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */ #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */ #define IPPROTO_ICMP IPPROTO_ICMP IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */ #define IPPROTO_IGMP IPPROTO_IGMP IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */ #define IPPROTO_IPIP IPPROTO_IPIP IPPROTO_TCP = 6, /* Transmission Control Protocol. */ #define IPPROTO_TCP IPPROTO_TCP IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */ #define IPPROTO_EGP IPPROTO_EGP IPPROTO_PUP = 12, /* PUP protocol. */ #define IPPROTO_PUP IPPROTO_PUP IPPROTO_UDP = 17, /* User Datagram Protocol. */ #define IPPROTO_UDP IPPROTO_UDP IPPROTO_IDP = 22, /* XNS IDP protocol. */ #define IPPROTO_IDP IPPROTO_IDP IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */ #define IPPROTO_TP IPPROTO_TP IPPROTO_IPV6 = 41, /* IPv6 header. */ #define IPPROTO_IPV6 IPPROTO_IPV6 IPPROTO_ROUTING = 43, /* IPv6 routing header. */ #define IPPROTO_ROUTING IPPROTO_ROUTING IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */ #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT IPPROTO_RSVP = 46, /* Reservation Protocol. */ #define IPPROTO_RSVP IPPROTO_RSVP IPPROTO_GRE = 47, /* General Routing Encapsulation. */ #define IPPROTO_GRE IPPROTO_GRE IPPROTO_ESP = 50, /* encapsulating security payload. */ #define IPPROTO_ESP IPPROTO_ESP IPPROTO_AH = 51, /* authentication header. */ #define IPPROTO_AH IPPROTO_AH IPPROTO_ICMPV6 = 58, /* ICMPv6. */ #define IPPROTO_ICMPV6 IPPROTO_ICMPV6 IPPROTO_NONE = 59, /* IPv6 no next header. */ #define IPPROTO_NONE IPPROTO_NONE IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */ #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS IPPROTO_MTP = 92, /* Multicast Transport Protocol. */ #define IPPROTO_MTP IPPROTO_MTP IPPROTO_ENCAP = 98, /* Encapsulation Header. */ #define IPPROTO_ENCAP IPPROTO_ENCAP IPPROTO_PIM = 103, /* Protocol Independent Multicast. */ #define IPPROTO_PIM IPPROTO_PIM IPPROTO_COMP = 108, /* Compression Header Protocol. */ #define IPPROTO_COMP IPPROTO_COMP IPPROTO_SCTP = 132, /* Stream Control Transmission Protocol. */ #define IPPROTO_SCTP IPPROTO_SCTP IPPROTO_RAW = 255, /* Raw IP packets. */ #define IPPROTO_RAW IPPROTO_RAW IPPROTO_MAX };
/* Type to represent a port. */ typedef uint16_t in_port_t;
/* Standard well-known ports. */ enum { IPPORT_ECHO = 7, /* Echo service. */ IPPORT_DISCARD = 9, /* Discard transmissions service. */ IPPORT_SYSTAT = 11, /* System status service. */ IPPORT_DAYTIME = 13, /* Time of day service. */ IPPORT_NETSTAT = 15, /* Network status service. */ IPPORT_FTP = 21, /* File Transfer Protocol. */ IPPORT_TELNET = 23, /* Telnet protocol. */ IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */ IPPORT_TIMESERVER = 37, /* Timeserver service. */ IPPORT_NAMESERVER = 42, /* Domain Name Service. */ IPPORT_WHOIS = 43, /* Internet Whois service. */ IPPORT_MTP = 57,
IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */ IPPORT_RJE = 77, IPPORT_FINGER = 79, /* Finger service. */ IPPORT_TTYLINK = 87, IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
IPPORT_EXECSERVER = 512, /* execd service. */ IPPORT_LOGINSERVER = 513, /* rlogind service. */ IPPORT_CMDSERVER = 514, IPPORT_EFSSERVER = 520,
/* UDP ports. */ IPPORT_BIFFUDP = 512, IPPORT_WHOSERVER = 513, IPPORT_ROUTESERVER = 520,
/* Ports less than this value are reserved for privileged processes. */ IPPORT_RESERVED = 1024,
/* Ports greater this value are reserved for (non-privileged) servers. */ IPPORT_USERRESERVED = 5000 };
/* Internet address. */ typedef uint32_t in_addr_t; struct in_addr { in_addr_t s_addr; };
/* Definitions of the bits in an Internet address integer.
On subnets, host and network parts are found according to the subnet mask, not these masks. */
#define IN_CLASSA(a) ((((in_addr_t)(a)) & 0x80000000) == 0) #define IN_CLASSA_NET 0xff000000 #define IN_CLASSA_NSHIFT 24 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) #define IN_CLASSA_MAX 128
#define IN_CLASSB(a) ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000) #define IN_CLASSB_NET 0xffff0000 #define IN_CLASSB_NSHIFT 16 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) #define IN_CLASSB_MAX 65536
#define IN_CLASSC(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000) #define IN_CLASSC_NET 0xffffff00 #define IN_CLASSC_NSHIFT 8 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
#define IN_CLASSD(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000) #define IN_MULTICAST(a) IN_CLASSD(a)
#define IN_EXPERIMENTAL(a) ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000) #define IN_BADCLASS(a) ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
/* Address to accept any incoming messages. */ #define INADDR_ANY ((in_addr_t) 0x00000000) /* Address to send to all hosts. */ #define INADDR_BROADCAST ((in_addr_t) 0xffffffff) /* Address indicating an error return. */ #define INADDR_NONE ((in_addr_t) 0xffffffff)
/* Network number for local host loopback. */ #define IN_LOOPBACKNET 127 /* Address to loopback in software to local host. */ #ifndef INADDR_LOOPBACK # define INADDR_LOOPBACK ((in_addr_t) 0x7f000001) /* Inet 127.0.0.1. */ #endif
/* Defines for Multicast INADDR. */ #define INADDR_UNSPEC_GROUP ((in_addr_t) 0xe0000000) /* 224.0.0.0 */ #define INADDR_ALLHOSTS_GROUP ((in_addr_t) 0xe0000001) /* 224.0.0.1 */ #define INADDR_ALLRTRS_GROUP ((in_addr_t) 0xe0000002) /* 224.0.0.2 */ #define INADDR_MAX_LOCAL_GROUP ((in_addr_t) 0xe00000ff) /* 224.0.0.255 */
/* IPv6 address */ struct in6_addr { union { uint8_t u6_addr8[16]; uint16_t u6_addr16[8]; uint32_t u6_addr32[4]; } in6_u; #define s6_addr in6_u.u6_addr8 #define s6_addr16 in6_u.u6_addr16 #define s6_addr32 in6_u.u6_addr32 };
extern const struct in6_addr in6addr_any; /* :: */ extern const struct in6_addr in6addr_loopback; /* ::1 */ #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } } #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
#define INET_ADDRSTRLEN 16 #define INET6_ADDRSTRLEN 46
/* Get the definition of the macro to define the common sockaddr members. */ #include <bits/socket.h>
/* Structure describing an Internet socket address. */ struct sockaddr_in { __SOCKADDR_COMMON (sin_); in_port_t sin_port; /* Port number. */ struct in_addr sin_addr; /* Internet address. */
/* Pad to size of `struct sockaddr'. */ unsigned char sin_zero[sizeof (struct sockaddr) - __SOCKADDR_COMMON_SIZE - sizeof (in_port_t) - sizeof (struct in_addr)]; };
/* Ditto, for IPv6. */ struct sockaddr_in6 { __SOCKADDR_COMMON (sin6_); in_port_t sin6_port; /* Transport layer port # */ uint32_t sin6_flowinfo; /* IPv6 flow information */ struct in6_addr sin6_addr; /* IPv6 address */ uint32_t sin6_scope_id; /* IPv6 scope-id */ };
/* IPv6 multicast request. */ struct ipv6_mreq { /* IPv6 multicast address of group */ struct in6_addr ipv6mr_multiaddr;
/* local interface */ unsigned int ipv6mr_interface; };
/* Get system-specific definitions. */ #include <bits/in.h>
/* Functions to convert between host and network byte order.
Please note that these functions normally take `unsigned long int' or `unsigned short int' values as arguments and also return them. But this was a short-sighted decision since on different systems the types may have different representations but the values are always the same. */
extern uint32_t ntohl (uint32_t __netlong) __THROW __attribute__ ((__const__)); extern uint16_t ntohs (uint16_t __netshort) __THROW __attribute__ ((__const__)); extern uint32_t htonl (uint32_t __hostlong) __THROW __attribute__ ((__const__)); extern uint16_t htons (uint16_t __hostshort) __THROW __attribute__ ((__const__));
#include <endian.h>
/* Get machine dependent optimized versions of byte swapping functions. */ #include <bits/byteswap.h>
#ifdef __OPTIMIZE__ /* We can optimize calls to the conversion functions. Either nothing has to be done or we are using directly the byte-swapping functions which often can be inlined. */ # if __BYTE_ORDER == __BIG_ENDIAN /* The host byte order is the same as network byte order, so these functions are all just identity. */ # define ntohl(x) (x) # define ntohs(x) (x) # define htonl(x) (x) # define htons(x) (x) # else # if __BYTE_ORDER == __LITTLE_ENDIAN # define ntohl(x) __bswap_32 (x) # define ntohs(x) __bswap_16 (x) # define htonl(x) __bswap_32 (x) # define htons(x) __bswap_16 (x) # endif # endif #endif
#define IN6_IS_ADDR_UNSPECIFIED(a) \ (((__const uint32_t *) (a))[0] == 0 \ && ((__const uint32_t *) (a))[1] == 0 \ && ((__const uint32_t *) (a))[2] == 0 \ && ((__const uint32_t *) (a))[3] == 0)
#define IN6_IS_ADDR_LOOPBACK(a) \ (((__const uint32_t *) (a))[0] == 0 \ && ((__const uint32_t *) (a))[1] == 0 \ && ((__const uint32_t *) (a))[2] == 0 \ && ((__const uint32_t *) (a))[3] == htonl (1))
#define IN6_IS_ADDR_MULTICAST(a) (((__const uint8_t *) (a))[0] == 0xff)
#define IN6_IS_ADDR_LINKLOCAL(a) \ ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \ == htonl (0xfe800000))
#define IN6_IS_ADDR_SITELOCAL(a) \ ((((__const uint32_t *) (a))[0] & htonl (0xffc00000)) \ == htonl (0xfec00000))
#define IN6_IS_ADDR_V4MAPPED(a) \ ((((__const uint32_t *) (a))[0] == 0) \ && (((__const uint32_t *) (a))[1] == 0) \ && (((__const uint32_t *) (a))[2] == htonl (0xffff)))
#define IN6_IS_ADDR_V4COMPAT(a) \ ((((__const uint32_t *) (a))[0] == 0) \ && (((__const uint32_t *) (a))[1] == 0) \ && (((__const uint32_t *) (a))[2] == 0) \ && (ntohl (((__const uint32_t *) (a))[3]) > 1))
#define IN6_ARE_ADDR_EQUAL(a,b) \ ((((__const uint32_t *) (a))[0] == ((__const uint32_t *) (b))[0]) \ && (((__const uint32_t *) (a))[1] == ((__const uint32_t *) (b))[1]) \ && (((__const uint32_t *) (a))[2] == ((__const uint32_t *) (b))[2]) \ && (((__const uint32_t *) (a))[3] == ((__const uint32_t *) (b))[3]))
/* Bind socket to a privileged IP port. */ extern int bindresvport (int __sockfd, struct sockaddr_in *__sock_in) __THROW;
/* The IPv6 version of this function. */ extern int bindresvport6 (int __sockfd, struct sockaddr_in6 *__sock_in) __THROW;
#define IN6_IS_ADDR_MC_NODELOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0x1))
#define IN6_IS_ADDR_MC_LINKLOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0x2))
#define IN6_IS_ADDR_MC_SITELOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0x5))
#define IN6_IS_ADDR_MC_ORGLOCAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0x8))
#define IN6_IS_ADDR_MC_GLOBAL(a) \ (IN6_IS_ADDR_MULTICAST(a) \ && ((((__const uint8_t *) (a))[1] & 0xf) == 0xe))
/* IPv6 packet information. */ struct in6_pktinfo { struct in6_addr ipi6_addr; /* src/dst IPv6 address */ unsigned int ipi6_ifindex; /* send/recv interface index */ };
#ifdef __USE_GNU /* Hop-by-Hop and Destination Options Processing. */ extern int inet6_option_space (int __nbytes); extern int inet6_option_init (void *__bp, struct cmsghdr **__cmsgp, int __type); extern int inet6_option_append (struct cmsghdr *__cmsg, __const uint8_t *__typep, int __multx, int __plusy); extern uint8_t *inet6_option_alloc (struct cmsghdr *__cmsg, int __datalen, int __multx, int __plusy); extern int inet6_option_next (__const struct cmsghdr *__cmsg, uint8_t **__tptrp); extern int inet6_option_find (__const struct cmsghdr *__cmsg, uint8_t **__tptrp, int __type); #endif /* use GNU */
__END_DECLS
#endif /* netinet/in.h */
|
netdb.h :
[code=cpp]
/* Copyright © 1996-2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* All data returned by the network data base library are supplied in
host order and returned in network order (suitable for use in
system calls). */
#ifndef _NETDB_H
#define _NETDB_H 1
#include <features.h>
#include <netinet/in.h>
#include <stdint.h>
#ifdef __USE_MISC
/* This is necessary to make this include file properly replace the
Sun version. */
# include <rpc/netdb.h>
#endif
#ifdef __USE_GNU
# define __need_sigevent_t
# include <bits/siginfo.h>
# define __need_timespec
# include <time.h>
#endif
#include <bits/netdb.h>
/* Absolute file name for network data base files. */
#define _PATH_HEQUIV "/etc/hosts.equiv"
#define _PATH_HOSTS "/etc/hosts"
#define _PATH_NETWORKS "/etc/networks"
#define _PATH_NSSWITCH_CONF "/etc/nsswitch.conf"
#define _PATH_PROTOCOLS "/etc/protocols"
#define _PATH_SERVICES "/etc/services"
__BEGIN_DECLS
/* Error status for non-reentrant lookup functions.
We use a macro to access always the thread-specific `h_errno' variable. */
#define h_errno (*__h_errno_location ())
/* Function to get address of global `h_errno' variable. */
extern int *__h_errno_location (void) __THROW __attribute__ ((__const__));
/* Possible values left in `h_errno'. */
#define NETDB_INTERNAL -1 /* See errno. */
#define NETDB_SUCCESS 0 /* No problem. */
#define HOST_NOT_FOUND 1 /* Authoritative Answer Host not found. */
#define TRY_AGAIN 2 /* Non-Authoritative Host not found,
or SERVERFAIL. */
#define NO_RECOVERY 3 /* Non recoverable errors, FORMERR, REFUSED,
NOTIMP. */
#define NO_DATA 4 /* Valid name, no data record of requested
type. */
#define NO_ADDRESS NO_DATA /* No address, look for MX record. */
#ifdef __USE_XOPEN2K
/* Highest reserved Internet port number. */
# define IPPORT_RESERVED 1024
#endif
#ifdef __USE_GNU
/* Scope delimiter for getaddrinfo(), getnameinfo(). */
# define SCOPE_DELIMITER '%'
#endif
/* Print error indicated by `h_errno' variable on standard error. STR
if non-null is printed before the error string. */
extern void herror (__const char *__str) __THROW;
/* Return string associated with error ERR_NUM. */
extern __const char *hstrerror (int __err_num) __THROW;
/* Description of data base entry for a single host. */
struct hostent
{
char *h_name; /* Official name of host. */
char **h_aliases; /* Alias list. */
int h_addrtype; /* Host address type. */
int h_length; /* Length of address. */
char **h_addr_list; /* List of addresses from name server. */
#define h_addr h_addr_list[0] /* Address, for backward compatibility. */
};
/* Open host data base files and mark them as staying open even after
a later search if STAY_OPEN is non-zero.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern void sethostent (int __stay_open);
/* Close host data base files and clear `stay open' flag.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern void endhostent (void);
/* Get next entry from host data base file. Open data base if
necessary.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern struct hostent *gethostent (void);
/* Return entry from host data base which address match ADDR with
length LEN and type TYPE.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern struct hostent *gethostbyaddr (__const void *__addr, __socklen_t __len,
int __type);
/* Return entry from host data base for host with NAME.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern struct hostent *gethostbyname (__const char *__name);
#ifdef __USE_MISC
/* Return entry from host data base for host with NAME. AF must be
set to the address type which is `AF_INET' for IPv4 or `AF_INET6'
for IPv6.
This function is not part of POSIX and therefore no official
cancellation point. But due to similarity with an POSIX interface
or due to the implementation it is a cancellation point and
therefore not marked with __THROW. */
extern struct hostent *gethostbyname2 (__const char *__name, int __af);
/* Reentrant versions of the functions above. The additional
arguments specify a buffer of BUFLEN starting at BUF. The last
argument is a pointer to a variable which gets the value which
would be stored in the global variable `herrno' by the
non-reentrant functions.
These functions are not part of POSIX and therefore no official
cancellation point. But due to similarity with an POSIX interface
or due to the implementation they are cancellation points and
therefore not marked with __THROW. */
extern int gethostent_r (struct hostent *__restrict __result_buf,
char *__restrict __buf, size_t __buflen,
struct hostent **__restrict __result,
int *__restrict __h_errnop);
extern int gethostbyaddr_r (__const void *__restrict __addr, __socklen_t __len,
int __type,
struct hostent *__restrict __result_buf,
char *__restrict __buf, size_t __buflen,
struct hostent **__restrict __result,
int *__restrict __h_errnop);
extern int gethostbyname_r (__const char *__restrict __name,
struct hostent *__restrict __result_buf,
char *__restrict __buf, size_t __buflen,
struct hostent **__restrict __result,
int *__restrict __h_errnop);
extern int gethostbyname2_r (__const char *__restrict __name, int __af,
struct hostent *__restrict __result_buf,
char *__restrict __buf, size_t __buflen,
struct hostent **__restrict __result,
int *__restrict __h_errnop);
#endif /* misc */
/* Open network data base files and mark them as staying open even
after a later search if STAY_OPEN is non-zero.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern void setnetent (int __stay_open);
/* Close network data base files and clear `stay open' flag.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern void endnetent (void);
/* Get next entry from network data base file. Open data base if
necessary.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern struct netent *getnetent (void);
/* Return entry from network data base which address match NET and
type TYPE.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern struct netent *getnetbyaddr (uint32_t __net, int __type);
/* Return entry from network data base for network with NAME.
This function is a possible cancellation point and therefore not
marked with __THROW. */
extern struct netent *getnetbyname (__const char *__name);
#ifdef __USE_MISC
/* Reentrant versions of the functions above. The additional
arguments specify a buffer of BUFLEN starting at BUF. The last
argument is a pointer to a variable which gets the value which
would be stored in the global variable `herrno' by the
non-reentrant functions.
Thes