mirror of
https://github.com/unrealircd/unrealircd.git
synced 2026-06-29 05:16:37 +02:00
Bram Matthys
f69fd6bf11
- c-ares (currently, a forked off version) enhancements:
- '/quote dns i' now shows the nameserver settings (which is taken from /etc/resolv.conf
on *NIX, and from the registry on Windows)
- We no longer depend on a C++ compiler (was useless c-ares dependency caused by libtool)
- '/REHASH -dns' now rereads the resolver data from resolv.conf/registry, no IRCd restart
needed anymore. It's currently kinda experimental however, but I *think* it will work ok.
Unfortunately the above features required some ugly hacks if curl was enabled, so if you
use curl (Remote includes), feel free to test on your OS (Linux, but especially FreeBSD
and the other *NIXes) to see if things still compile (make clean; ./Config && make).
190 lines
6.7 KiB
C
190 lines
6.7 KiB
C
/* $Id$ */
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/* Copyright 1998 by the Massachusetts Institute of Technology.
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*
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* Permission to use, copy, modify, and distribute this
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* software and its documentation for any purpose and without
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* fee is hereby granted, provided that the above copyright
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* notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting
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* documentation, and that the name of M.I.T. not be used in
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* advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission.
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* M.I.T. makes no representations about the suitability of
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* this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*/
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#ifndef ARES__H
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#define ARES__H
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#include <sys/types.h>
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#if defined(_AIX) || defined(NETWARE)
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/* HP-UX systems version 9, 10 and 11 lack sys/select.h and so does oldish
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libc5-based Linux systems. Only include it on system that are known to
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require it! */
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#include <sys/select.h>
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#endif
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#if defined(WATT32)
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <tcp.h>
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#elif defined(WIN32)
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#include <winsock.h>
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#include <windows.h>
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#else
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#include <netinet/in.h>
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#include <sys/socket.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define ARES_SUCCESS 0
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/* Server error codes (ARES_ENODATA indicates no relevant answer) */
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#define ARES_ENODATA 1
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#define ARES_EFORMERR 2
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#define ARES_ESERVFAIL 3
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#define ARES_ENOTFOUND 4
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#define ARES_ENOTIMP 5
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#define ARES_EREFUSED 6
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/* Locally generated error codes */
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#define ARES_EBADQUERY 7
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#define ARES_EBADNAME 8
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#define ARES_EBADFAMILY 9
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#define ARES_EBADRESP 10
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#define ARES_ECONNREFUSED 11
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#define ARES_ETIMEOUT 12
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#define ARES_EOF 13
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#define ARES_EFILE 14
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#define ARES_ENOMEM 15
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#define ARES_EDESTRUCTION 16
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#define ARES_EBADSTR 17
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/* ares_getnameinfo error codes */
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#define ARES_EBADFLAGS 18
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/* Flag values */
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#define ARES_FLAG_USEVC (1 << 0)
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#define ARES_FLAG_PRIMARY (1 << 1)
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#define ARES_FLAG_IGNTC (1 << 2)
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#define ARES_FLAG_NORECURSE (1 << 3)
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#define ARES_FLAG_STAYOPEN (1 << 4)
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#define ARES_FLAG_NOSEARCH (1 << 5)
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#define ARES_FLAG_NOALIASES (1 << 6)
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#define ARES_FLAG_NOCHECKRESP (1 << 7)
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/* Option mask values */
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#define ARES_OPT_FLAGS (1 << 0)
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#define ARES_OPT_TIMEOUT (1 << 1)
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#define ARES_OPT_TRIES (1 << 2)
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#define ARES_OPT_NDOTS (1 << 3)
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#define ARES_OPT_UDP_PORT (1 << 4)
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#define ARES_OPT_TCP_PORT (1 << 5)
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#define ARES_OPT_SERVERS (1 << 6)
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#define ARES_OPT_DOMAINS (1 << 7)
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#define ARES_OPT_LOOKUPS (1 << 8)
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/* Nameinfo flag values */
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#define ARES_NI_NOFQDN (1 << 0)
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#define ARES_NI_NUMERICHOST (1 << 1)
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#define ARES_NI_NAMEREQD (1 << 2)
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#define ARES_NI_NUMERICSERV (1 << 3)
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#define ARES_NI_DGRAM (1 << 4)
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#define ARES_NI_TCP 0
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#define ARES_NI_UDP ARES_NI_DGRAM
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#define ARES_NI_SCTP (1 << 5)
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#define ARES_NI_DCCP (1 << 6)
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#define ARES_NI_NUMERICSCOPE (1 << 7)
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#define ARES_NI_LOOKUPHOST (1 << 8)
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#define ARES_NI_LOOKUPSERVICE (1 << 9)
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/* Reserved for future use */
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#define ARES_NI_IDN (1 << 10)
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#define ARES_NI_ALLOW_UNASSIGNED (1 << 11)
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#define ARES_NI_USE_STD3_ASCII_RULES (1 << 12)
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struct ares_options {
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int flags;
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int timeout;
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int tries;
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int ndots;
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unsigned short udp_port;
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unsigned short tcp_port;
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struct in_addr *servers;
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int nservers;
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char **domains;
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int ndomains;
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char *lookups;
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};
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/** Public available config (readonly) interface for ares_get_config(). */
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struct ares_config_info {
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int timeout;
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int tries;
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int numservers;
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char **servers;
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};
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struct hostent;
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struct timeval;
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struct sockaddr;
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struct ares_channeldata;
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typedef struct ares_channeldata *ares_channel;
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typedef void (*ares_callback)(void *arg, int status, unsigned char *abuf,
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int alen);
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typedef void (*ares_host_callback)(void *arg, int status,
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struct hostent *hostent);
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typedef void (*ares_nameinfo_callback)(void *arg, int status,
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char *node, char *service);
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int ares_init(ares_channel *channelptr);
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int ares_init_options(ares_channel *channelptr, struct ares_options *options,
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int optmask);
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void ares_destroy(ares_channel channel);
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void ares_cancel(ares_channel channel);
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void ares_send(ares_channel channel, const unsigned char *qbuf, int qlen,
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ares_callback callback, void *arg);
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void ares_query(ares_channel channel, const char *name, int dnsclass,
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int type, ares_callback callback, void *arg);
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void ares_search(ares_channel channel, const char *name, int dnsclass,
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int type, ares_callback callback, void *arg);
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void ares_gethostbyname(ares_channel channel, const char *name, int family,
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ares_host_callback callback, void *arg);
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void ares_gethostbyaddr(ares_channel channel, const void *addr, int addrlen,
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int family, ares_host_callback callback, void *arg);
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void ares_getnameinfo(ares_channel channel, const struct sockaddr *sa,
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socklen_t salen, int flags, ares_nameinfo_callback callback,
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void *arg);
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int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds);
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struct timeval *ares_timeout(ares_channel channel, struct timeval *maxtv,
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struct timeval *tv);
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void ares_process(ares_channel channel, fd_set *read_fds, fd_set *write_fds);
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int ares_mkquery(const char *name, int dnsclass, int type, unsigned short id,
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int rd, unsigned char **buf, int *buflen);
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int ares_expand_name(const unsigned char *encoded, const unsigned char *abuf,
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int alen, char **s, long *enclen);
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int ares_expand_string(const unsigned char *encoded, const unsigned char *abuf,
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int alen, unsigned char **s, long *enclen);
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int ares_parse_a_reply(const unsigned char *abuf, int alen,
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struct hostent **host);
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int ares_parse_aaaa_reply(const unsigned char *abuf, int alen,
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struct hostent **host);
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int ares_parse_ptr_reply(const unsigned char *abuf, int alen, const void *addr,
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int addrlen, int family, struct hostent **host);
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void ares_free_string(void *str);
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void ares_free_hostent(struct hostent *host);
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const char *ares_strerror(int code);
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int ares_get_config(struct ares_config_info *d, ares_channel c);
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#ifdef __cplusplus
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}
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#endif
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#endif /* ARES__H */
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