diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/Makefile | 4 | ||||
| -rw-r--r-- | include/asr.h | 88 |
2 files changed, 90 insertions, 2 deletions
diff --git a/include/Makefile b/include/Makefile index a9dc5afb807..aa31db296cc 100644 --- a/include/Makefile +++ b/include/Makefile @@ -1,4 +1,4 @@ -# $OpenBSD: Makefile,v 1.185 2014/03/24 19:09:14 kettenis Exp $ +# $OpenBSD: Makefile,v 1.186 2014/03/26 18:13:15 eric Exp $ # $NetBSD: Makefile,v 1.59 1996/05/15 21:36:43 jtc Exp $ # @(#)Makefile 5.45.1.1 (Berkeley) 5/6/91 @@ -9,7 +9,7 @@ .include <bsd.own.mk> -FILES= a.out.h ar.h assert.h bitstring.h blf.h bsd_auth.h \ +FILES= a.out.h ar.h asr.h assert.h bitstring.h blf.h bsd_auth.h \ complex.h cpio.h ctype.h curses.h db.h dbm.h des.h dirent.h disktab.h \ dlfcn.h elf_abi.h err.h errno.h fenv.h float.h fnmatch.h fstab.h fts.h \ ftw.h getopt.h glob.h grp.h ifaddrs.h inttypes.h iso646.h kvm.h \ diff --git a/include/asr.h b/include/asr.h new file mode 100644 index 00000000000..0ceb0f5a604 --- /dev/null +++ b/include/asr.h @@ -0,0 +1,88 @@ +/* $OpenBSD: asr.h,v 1.1 2014/03/26 18:13:15 eric Exp $ */ +/* + * Copyright (c) 2012-2014 Eric Faurot <eric@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * Expected fd conditions + */ +#define ASR_WANT_READ 1 +#define ASR_WANT_WRITE 2 + +/* + * Structure through which asynchronous query results are returned when + * calling asr_run(). + */ +struct asr_result { + /* Fields set if the query is not done yet (asr_run returns 0) */ + int ar_cond; /* ASR_WANT_READ or ASR_WANT_WRITE */ + int ar_fd; /* the fd waiting for io condition */ + int ar_timeout; /* time to wait for in milliseconds */ + + /* Error fields. Depends on the query type. */ + int ar_errno; + int ar_h_errno; + int ar_gai_errno; + int ar_rrset_errno; + + /* Result for res_*_async() calls */ + int ar_count; /* number of answers in the dns reply */ + int ar_rcode; /* response code in the dns reply */ + void *ar_data; /* raw reply packet (must be freed) */ + int ar_datalen; /* reply packet length */ + struct sockaddr_storage ar_ns; /* nameserver that responded */ + + /* Result for other calls. Must be freed properly. */ + struct addrinfo *ar_addrinfo; + struct rrsetinfo *ar_rrsetinfo; + struct hostent *ar_hostent; + struct netent *ar_netent; +}; + +/* + * Asynchronous query management. + */ + +/* Forward declaration. The API uses opaque pointers as query handles. */ +struct asr_query; + +int asr_run(struct asr_query *, struct asr_result *); +int asr_run_sync(struct asr_query *, struct asr_result *); +void asr_abort(struct asr_query *); + +/* + * Asynchronous version of the resolver functions. Similar prototypes, with + * an extra context parameter at the end which must currently be set to NULL. + * All functions return a handle suitable for use with the management functions + * above. + */ +struct asr_query *res_send_async(const unsigned char *, int, void *); +struct asr_query *res_query_async(const char *, int, int, void *); +struct asr_query *res_search_async(const char *, int, int, void *); + +struct asr_query *getrrsetbyname_async(const char *, unsigned int, unsigned int, + unsigned int, void *); + +struct asr_query *gethostbyname_async(const char *, void *); +struct asr_query *gethostbyname2_async(const char *, int, void *); +struct asr_query *gethostbyaddr_async(const void *, socklen_t, int, void *); + +struct asr_query *getnetbyname_async(const char *, void *); +struct asr_query *getnetbyaddr_async(in_addr_t, int, void *); + +struct asr_query *getaddrinfo_async(const char *, const char *, + const struct addrinfo *, void *); +struct asr_query *getnameinfo_async(const struct sockaddr *, socklen_t, char *, + size_t, char *, size_t, int, void *); |