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Moved private dns header to their own dir.

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Bug: 13219633
Change-Id: I3435ef7564b9ad3c7b54188a0809440993b36c9e
This commit is contained in:
Calin Juravle
2014-03-03 11:44:48 +00:00
parent bd33537fde
commit cecc036970
6 changed files with 1 additions and 0 deletions
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237
libc/dns/include/nsswitch.h Normal file
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/* $NetBSD: nsswitch.h,v 1.18 2005/11/29 03:12:58 christos Exp $ */
/*-
* Copyright (c) 1997, 1998, 1999, 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _NSSWITCH_H
#define _NSSWITCH_H 1
#include <sys/types.h>
#include <stdarg.h>
#define NSS_MODULE_INTERFACE_VERSION 0
#ifndef _PATH_NS_CONF
#define _PATH_NS_CONF "/etc/nsswitch.conf"
#endif
#define NS_CONTINUE 0
#define NS_RETURN 1
/*
* Layout of:
* uint32_t ns_src.flags
*/
/* nsswitch.conf status codes and nsdispatch(3) return values */
#define NS_SUCCESS (1<<0) /* entry was found */
#define NS_UNAVAIL (1<<1) /* source not responding, or corrupt */
#define NS_NOTFOUND (1<<2) /* source responded 'no such entry' */
#define NS_TRYAGAIN (1<<3) /* source busy, may respond to retrys */
#define NS_STATUSMASK 0x000000ff /* bitmask to get the status flags */
/* internal nsdispatch(3) flags; not settable in nsswitch.conf(5) */
#define NS_FORCEALL (1<<8) /* force all methods to be invoked; */
/*
* Currently implemented sources.
*/
#define NSSRC_FILES "files" /* local files */
#define NSSRC_DNS "dns" /* DNS; IN for hosts, HS for others */
#define NSSRC_NIS "nis" /* YP/NIS */
#define NSSRC_COMPAT "compat" /* passwd,group in YP compat mode */
/*
* Currently implemented databases.
*/
#define NSDB_HOSTS "hosts"
#define NSDB_GROUP "group"
#define NSDB_GROUP_COMPAT "group_compat"
#define NSDB_NETGROUP "netgroup"
#define NSDB_NETWORKS "networks"
#define NSDB_PASSWD "passwd"
#define NSDB_PASSWD_COMPAT "passwd_compat"
#define NSDB_SHELLS "shells"
/*
* Suggested databases to implement.
*/
#define NSDB_ALIASES "aliases"
#define NSDB_AUTH "auth"
#define NSDB_AUTOMOUNT "automount"
#define NSDB_BOOTPARAMS "bootparams"
#define NSDB_ETHERS "ethers"
#define NSDB_EXPORTS "exports"
#define NSDB_NETMASKS "netmasks"
#define NSDB_PHONES "phones"
#define NSDB_PRINTCAP "printcap"
#define NSDB_PROTOCOLS "protocols"
#define NSDB_REMOTE "remote"
#define NSDB_RPC "rpc"
#define NSDB_SENDMAILVARS "sendmailvars"
#define NSDB_SERVICES "services"
#define NSDB_TERMCAP "termcap"
#define NSDB_TTYS "ttys"
/*
* ns_dtab `callback' function signature.
*/
typedef int (*nss_method)(void *, void *, va_list);
/*
* ns_dtab - `nsswitch dispatch table'
* Contains an entry for each source and the appropriate function to call.
*/
typedef struct {
const char *src;
nss_method callback;
void *cb_data;
} ns_dtab;
/*
* Macros to help build an ns_dtab[]
*/
#define NS_FILES_CB(F,C) { NSSRC_FILES, F, __UNCONST(C) },
#define NS_COMPAT_CB(F,C) { NSSRC_COMPAT, F, __UNCONST(C) },
#ifdef HESIOD
# define NS_DNS_CB(F,C) { NSSRC_DNS, F, __UNCONST(C) },
#else
# define NS_DNS_CB(F,C)
#endif
#ifdef YP
# define NS_NIS_CB(F,C) { NSSRC_NIS, F, __UNCONST(C) },
#else
# define NS_NIS_CB(F,C)
#endif
/*
* ns_src - `nsswitch source'
* Used by the nsparser routines to store a mapping between a source
* and its dispatch control flags for a given database.
*/
typedef struct {
const char *name;
uint32_t flags;
} ns_src;
#if 0
/*
* Default sourcelists (if nsswitch.conf is missing, corrupt,
* or the requested database doesn't have an entry)
*/
extern const ns_src __nsdefaultsrc[];
extern const ns_src __nsdefaultcompat[];
extern const ns_src __nsdefaultcompat_forceall[];
extern const ns_src __nsdefaultfiles[];
extern const ns_src __nsdefaultfiles_forceall[];
extern const ns_src __nsdefaultnis[];
extern const ns_src __nsdefaultnis_forceall[];
#endif
/*
* ns_mtab - `nsswitch method table'
* An nsswitch module provides a mapping from (database name, method name)
* tuples to the nss_method and associated callback data. Effectively,
* ns_dtab, but used for dynamically loaded modules.
*/
typedef struct {
const char *database;
const char *name;
nss_method method;
void *mdata;
} ns_mtab;
/*
* nss_module_register_fn - module registration function
* called at module load
* nss_module_unregister_fn - module un-registration function
* called at module unload
*/
typedef void (*nss_module_unregister_fn)(ns_mtab *, u_int);
typedef ns_mtab *(*nss_module_register_fn)(const char *, u_int *,
nss_module_unregister_fn *);
#ifdef _NS_PRIVATE
/*
* Private data structures for back-end nsswitch implementation.
*/
/*
* ns_dbt - `nsswitch database thang'
* For each database in /etc/nsswitch.conf there is a ns_dbt, with its
* name and a list of ns_src's containing the source information.
*/
typedef struct {
const char *name; /* name of database */
ns_src *srclist; /* list of sources */
u_int srclistsize; /* size of srclist */
} ns_dbt;
/*
* ns_mod - `nsswitch module'
*/
typedef struct {
const char *name; /* module name */
void *handle; /* handle from dlopen() */
ns_mtab *mtab; /* method table */
u_int mtabsize; /* size of mtab */
/* called to unload module */
nss_module_unregister_fn unregister;
} ns_mod;
#endif /* _NS_PRIVATE */
#include <sys/cdefs.h>
__BEGIN_DECLS
int nsdispatch(void *, const ns_dtab [], const char *,
const char *, const ns_src [], ...);
#ifdef _NS_PRIVATE
int _nsdbtaddsrc(ns_dbt *, const ns_src *);
void _nsdbtdump(const ns_dbt *);
int _nsdbtput(const ns_dbt *);
void _nsyyerror(const char *);
int _nsyylex(void);
#endif /* _NS_PRIVATE */
__END_DECLS
#endif /* !_NSSWITCH_H */

127
libc/dns/include/resolv_cache.h Normal file
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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _RESOLV_CACHE_H_
#define _RESOLV_CACHE_H_
#include <stddef.h>
#include <sys/cdefs.h>
struct __res_state;
struct resolv_cache; /* forward */
/* gets the cache for an interface. Set ifname argument to NULL or
* empty buffer ('\0') to get cache for default interface.
* returned cache might be NULL*/
__LIBC_HIDDEN__
extern struct resolv_cache* __get_res_cache(const char* ifname);
/* this gets called everytime we detect some changes in the DNS configuration
* and will flush the cache */
__LIBC_HIDDEN__
extern void _resolv_cache_reset( unsigned generation );
/* Gets the address of the n:th name server for the default interface
* Return length of address on success else 0.
* Note: The first name server is at n = 1 */
__LIBC_HIDDEN__
extern int _resolv_cache_get_nameserver(int n, char* addr, int addrLen);
/* Gets the address of the n:th name server for a certain interface
* Return length of address on success else 0.
* Note: The first name server is at n = 1 */
__LIBC_HIDDEN__
extern int _resolv_cache_get_nameserver_for_iface(const char* ifname, int n,
char* addr, int addrLen);
/* Gets addrinfo of the n:th name server associated with an interface.
* NULL is returned if no address if found.
* Note: The first name server is at n = 1. */
__LIBC_HIDDEN__
extern struct addrinfo* _resolv_cache_get_nameserver_addr_for_iface(const char* ifname, int n);
/* Gets addrinfo of the n:th name server associated with the default interface
* NULL is returned if no address if found.
* Note: The first name server is at n = 1. */
__LIBC_HIDDEN__
extern struct addrinfo* _resolv_cache_get_nameserver_addr(int n);
/* gets the address associated with the default interface */
__LIBC_HIDDEN__
extern struct in_addr* _resolv_get_addr_of_default_iface();
/* gets the address associated with the specified interface */
__LIBC_HIDDEN__
extern struct in_addr* _resolv_get_addr_of_iface(const char* ifname);
/* Copy the name of the default interface to the provided buffer.
* Returns the string length of the default interface,
* be that less or more than the buffLen, or 0 if nothing had been written */
__LIBC_HIDDEN__
extern size_t _resolv_get_default_iface(char* buff, size_t buffLen);
/* sets the name server addresses to the provided res_state structure. The
* name servers are retrieved from the cache which is associated
* with the interface to which the res_state structure is associated */
__LIBC_HIDDEN__
extern void _resolv_populate_res_for_iface(struct __res_state* statp);
typedef enum {
RESOLV_CACHE_UNSUPPORTED, /* the cache can't handle that kind of queries */
/* or the answer buffer is too small */
RESOLV_CACHE_NOTFOUND, /* the cache doesn't know about this query */
RESOLV_CACHE_FOUND /* the cache found the answer */
} ResolvCacheStatus;
__LIBC_HIDDEN__
extern ResolvCacheStatus
_resolv_cache_lookup( struct resolv_cache* cache,
const void* query,
int querylen,
void* answer,
int answersize,
int *answerlen );
/* add a (query,answer) to the cache, only call if _resolv_cache_lookup
* did return RESOLV_CACHE_NOTFOUND
*/
__LIBC_HIDDEN__
extern void
_resolv_cache_add( struct resolv_cache* cache,
const void* query,
int querylen,
const void* answer,
int answerlen );
/* Notify the cache a request failed */
__LIBC_HIDDEN__
extern void
_resolv_cache_query_failed( struct resolv_cache* cache,
const void* query,
int querylen);
#endif /* _RESOLV_CACHE_H_ */

106
libc/dns/include/resolv_iface.h Normal file
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/*
* Copyright (C) 2011 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _RESOLV_IFACE_H
#define _RESOLV_IFACE_H
/* This header contains declarations related to per-interface DNS
* server selection. They are used by system/netd/ and should not be
* exposed by the C library's public NDK headers.
*
* NOTE: <resolv.h> contains the same declarations, this will be removed
* when we change system/netd to use this header instead.
*/
#include <sys/cdefs.h>
#include <netinet/in.h>
__BEGIN_DECLS
/* Use a guard macro until we remove the same definitions from <resolv.h> */
#ifndef _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED
#define _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED
/* Set name of default interface */
extern void _resolv_set_default_iface(const char* ifname);
/* set name servers for an interface */
extern void _resolv_set_nameservers_for_iface(const char* ifname, const char** servers, int numservers,
const char *domains);
/* tell resolver of the address of an interface */
extern void _resolv_set_addr_of_iface(const char* ifname, struct in_addr* addr);
/* flush the cache associated with the default interface */
extern void _resolv_flush_cache_for_default_iface();
/* flush the cache associated with a certain interface */
extern void _resolv_flush_cache_for_iface(const char* ifname);
/* set a pid to use the name servers of the specified interface */
extern void _resolv_set_iface_for_pid(const char* ifname, int pid);
/* clear pid from being associated with an interface */
extern void _resolv_clear_iface_for_pid(int pid);
/* clear the entire mapping of pids to interfaces. */
extern void _resolv_clear_iface_pid_mapping();
/** Gets the name of the interface to which the pid is attached.
* On error, -1 is returned.
* If no interface is found, 0 is returned and buff is set to empty ('\0').
* If an interface is found, the name is copied to buff and the length of the name is returned.
* Arguments: pid The pid to find an interface for
* buff A buffer to copy the result to
* buffLen Length of buff. An interface is at most IF_NAMESIZE in length */
extern int _resolv_get_pids_associated_interface(int pid, char* buff, int buffLen);
/** set a uid range to use the name servers of the specified interface
* If [low,high] overlaps with an already existing rule -1 is returned */
extern int _resolv_set_iface_for_uid_range(const char* ifname, int uid_start, int uid_end);
/* clear a uid range from being associated with an interface
* If the range given is not mapped -1 is returned. */
extern int _resolv_clear_iface_for_uid_range(int uid_start, int uid_end);
/* clear the entire mapping of uid ranges to interfaces. */
extern void _resolv_clear_iface_uid_range_mapping();
/** Gets the name of the interface to which the uid is attached.
* On error, -1 is returned.
* If no interface is found, 0 is returned and buff is set to empty ('\0').
* If an interface is found, the name is copied to buff and the length of the name is returned.
* Arguments: uid The uid to find an interface for
* buff A buffer to copy the result to
* buffLen Length of buff. An interface is at most IF_NAMESIZE in length */
extern int _resolv_get_uids_associated_interface(int uid, char* buff, int buffLen);
#endif /* _BIONIC_RESOLV_IFACE_FUNCTIONS_DECLARED */
__END_DECLS
#endif /* _RESOLV_IFACE_H */

499
libc/dns/include/resolv_private.h Normal file
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/* $NetBSD: resolv.h,v 1.31 2005/12/26 19:01:47 perry Exp $ */
/*
* Copyright (c) 1983, 1987, 1989
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Portions Copyright (c) 1996-1999 by Internet Software Consortium.
*
* 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 ISC DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC 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.
*/
/*
* @(#)resolv.h 8.1 (Berkeley) 6/2/93
* Id: resolv.h,v 1.7.2.11.4.2 2004/06/25 00:41:05 marka Exp
*/
#ifndef _RESOLV_PRIVATE_H_
#define _RESOLV_PRIVATE_H_
#include <sys/cdefs.h>
#include <resolv.h>
#include "resolv_static.h"
#include <net/if.h>
/*
* Revision information. This is the release date in YYYYMMDD format.
* It can change every day so the right thing to do with it is use it
* in preprocessor commands such as "#if (__RES > 19931104)". Do not
* compare for equality; rather, use it to determine whether your resolver
* is new enough to contain a certain feature.
*/
#define __RES 20030124
/*
* This used to be defined in res_query.c, now it's in herror.c.
* [XXX no it's not. It's in irs/irs_data.c]
* It was
* never extern'd by any *.h file before it was placed here. For thread
* aware programs, the last h_errno value set is stored in res->h_errno.
*
* XXX: There doesn't seem to be a good reason for exposing RES_SET_H_ERRNO
* (and __h_errno_set) to the public via <resolv.h>.
* XXX: __h_errno_set is really part of IRS, not part of the resolver.
* If somebody wants to build and use a resolver that doesn't use IRS,
* what do they do? Perhaps something like
* #ifdef WANT_IRS
* # define RES_SET_H_ERRNO(r,x) __h_errno_set(r,x)
* #else
* # define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x))
* #endif
*/
#define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x))
struct __res_state; /* forward */
/*
* Resolver configuration file.
* Normally not present, but may contain the address of the
* initial name server(s) to query and the domain search list.
*/
#ifndef _PATH_RESCONF
#ifdef ANDROID_CHANGES
#define _PATH_RESCONF "/etc/ppp/resolv.conf"
#else
#define _PATH_RESCONF "/etc/resolv.conf"
#endif
#endif
typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error }
res_sendhookact;
typedef res_sendhookact (*res_send_qhook)(struct sockaddr * const *,
const u_char **, int *,
u_char *, int, int *);
typedef res_sendhookact (*res_send_rhook)(const struct sockaddr *,
const u_char *, int, u_char *,
int, int *);
struct res_sym {
int number; /* Identifying number, like T_MX */
const char * name; /* Its symbolic name, like "MX" */
const char * humanname; /* Its fun name, like "mail exchanger" */
};
/*
* Global defines and variables for resolver stub.
*/
#define MAXNS 3 /* max # name servers we'll track */
#define MAXDFLSRCH 3 /* # default domain levels to try */
#define MAXDNSRCH 6 /* max # domains in search path */
#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
#define RES_TIMEOUT 5 /* min. seconds between retries */
#define MAXRESOLVSORT 10 /* number of net to sort on */
#define RES_MAXNDOTS 15 /* should reflect bit field size */
#define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
#define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
#define RES_DFLRETRY 2 /* Default #/tries. */
#define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
struct __res_state_ext;
struct __res_state {
char iface[IF_NAMESIZE+1];
int retrans; /* retransmission time interval */
int retry; /* number of times to retransmit */
#ifdef sun
u_int options; /* option flags - see below. */
#else
u_long options; /* option flags - see below. */
#endif
int nscount; /* number of name servers */
struct sockaddr_in
nsaddr_list[MAXNS]; /* address of name server */
#define nsaddr nsaddr_list[0] /* for backward compatibility */
u_short id; /* current message id */
char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
char defdname[256]; /* default domain (deprecated) */
#ifdef sun
u_int pfcode; /* RES_PRF_ flags - see below. */
#else
u_long pfcode; /* RES_PRF_ flags - see below. */
#endif
unsigned ndots:4; /* threshold for initial abs. query */
unsigned nsort:4; /* number of elements in sort_list[] */
char unused[3];
struct {
struct in_addr addr;
uint32_t mask;
} sort_list[MAXRESOLVSORT];
#ifdef __OLD_RES_STATE
char lookups[4];
#else
res_send_qhook qhook; /* query hook */
res_send_rhook rhook; /* response hook */
int res_h_errno; /* last one set for this context */
int _mark; /* If non-0 SET_MARK to _mark on all request sockets */
int _vcsock; /* PRIVATE: for res_send VC i/o */
u_int _flags; /* PRIVATE: see below */
u_int _pad; /* make _u 64 bit aligned */
union {
/* On an 32-bit arch this means 512b total. */
char pad[72 - 4*sizeof (int) - 2*sizeof (void *)];
struct {
uint16_t nscount;
uint16_t nstimes[MAXNS]; /* ms. */
int nssocks[MAXNS];
struct __res_state_ext *ext; /* extention for IPv6 */
} _ext;
} _u;
#endif
struct res_static rstatic[1];
};
typedef struct __res_state *res_state;
union res_sockaddr_union {
struct sockaddr_in sin;
#ifdef IN6ADDR_ANY_INIT
struct sockaddr_in6 sin6;
#endif
#ifdef ISC_ALIGN64
int64_t __align64; /* 64bit alignment */
#else
int32_t __align32; /* 32bit alignment */
#endif
char __space[128]; /* max size */
};
/*
* Resolver flags (used to be discrete per-module statics ints).
*/
#define RES_F_VC 0x00000001 /* socket is TCP */
#define RES_F_CONN 0x00000002 /* socket is connected */
#define RES_F_EDNS0ERR 0x00000004 /* EDNS0 caused errors */
#define RES_F__UNUSED 0x00000008 /* (unused) */
#define RES_F_LASTMASK 0x000000F0 /* ordinal server of last res_nsend */
#define RES_F_LASTSHIFT 4 /* bit position of LASTMASK "flag" */
#define RES_GETLAST(res) (((res)._flags & RES_F_LASTMASK) >> RES_F_LASTSHIFT)
/* res_findzonecut2() options */
#define RES_EXHAUSTIVE 0x00000001 /* always do all queries */
#define RES_IPV4ONLY 0x00000002 /* IPv4 only */
#define RES_IPV6ONLY 0x00000004 /* IPv6 only */
/*
* Resolver options (keep these in synch with res_debug.c, please)
*/
#define RES_INIT 0x00000001 /* address initialized */
#define RES_DEBUG 0x00000002 /* print debug messages */
#define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/
#define RES_USEVC 0x00000008 /* use virtual circuit */
#define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */
#define RES_IGNTC 0x00000020 /* ignore trucation errors */
#define RES_RECURSE 0x00000040 /* recursion desired */
#define RES_DEFNAMES 0x00000080 /* use default domain name */
#define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */
#define RES_DNSRCH 0x00000200 /* search up local domain tree */
#define RES_INSECURE1 0x00000400 /* type 1 security disabled */
#define RES_INSECURE2 0x00000800 /* type 2 security disabled */
#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
#define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */
#define RES_ROTATE 0x00004000 /* rotate ns list after each query */
#define RES_NOCHECKNAME 0x00008000 /* do not check names for sanity. */
#define RES_KEEPTSIG 0x00010000 /* do not strip TSIG records */
#define RES_BLAST 0x00020000 /* blast all recursive servers */
#define RES_NOTLDQUERY 0x00100000 /* don't unqualified name as a tld */
#define RES_USE_DNSSEC 0x00200000 /* use DNSSEC using OK bit in OPT */
/* #define RES_DEBUG2 0x00400000 */ /* nslookup internal */
/* KAME extensions: use higher bit to avoid conflict with ISC use */
#define RES_USE_DNAME 0x10000000 /* use DNAME */
#define RES_USE_EDNS0 0x40000000 /* use EDNS0 if configured */
#define RES_NO_NIBBLE2 0x80000000 /* disable alternate nibble lookup */
#define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | \
RES_DNSRCH | RES_NO_NIBBLE2)
/*
* Resolver "pfcode" values. Used by dig.
*/
#define RES_PRF_STATS 0x00000001
#define RES_PRF_UPDATE 0x00000002
#define RES_PRF_CLASS 0x00000004
#define RES_PRF_CMD 0x00000008
#define RES_PRF_QUES 0x00000010
#define RES_PRF_ANS 0x00000020
#define RES_PRF_AUTH 0x00000040
#define RES_PRF_ADD 0x00000080
#define RES_PRF_HEAD1 0x00000100
#define RES_PRF_HEAD2 0x00000200
#define RES_PRF_TTLID 0x00000400
#define RES_PRF_HEADX 0x00000800
#define RES_PRF_QUERY 0x00001000
#define RES_PRF_REPLY 0x00002000
#define RES_PRF_INIT 0x00004000
#define RES_PRF_TRUNC 0x00008000
/* 0x00010000 */
/* Things involving an internal (static) resolver context. */
__BEGIN_DECLS
extern struct __res_state *__res_get_state(void);
extern void __res_put_state(struct __res_state *);
#ifndef ANDROID_CHANGES
/*
* Source and Binary compatibility; _res will not work properly
* with multi-threaded programs.
*/
extern struct __res_state *__res_state(void);
#define _res (*__res_state())
#endif
__END_DECLS
#ifndef __BIND_NOSTATIC
#define fp_nquery __fp_nquery
#define fp_query __fp_query
#define hostalias __hostalias
#define p_query __p_query
#define res_close __res_close
#define res_opt __res_opt
#define res_isourserver __res_isourserver
#define res_querydomain __res_querydomain
#define res_send __res_send
#define res_sendsigned __res_sendsigned
#ifdef BIND_RES_POSIX3
#define dn_expand __dn_expand
#define res_init __res_init
#define res_query __res_query
#define res_search __res_search
#define res_mkquery __res_mkquery
#endif
__BEGIN_DECLS
void fp_nquery(const u_char *, int, FILE *);
void fp_query(const u_char *, FILE *);
const char * hostalias(const char *);
void p_query(const u_char *);
void res_close(void);
int res_init(void);
int res_opt(int, u_char *, int, int);
int res_isourserver(const struct sockaddr_in *);
int res_mkquery(int, const char *, int, int, const u_char *, int, const u_char *, u_char *, int);
int res_query(const char *, int, int, u_char *, int);
int res_querydomain(const char *, const char *, int, int, u_char *, int);
int res_search(const char *, int, int, u_char *, int);
int res_send(const u_char *, int, u_char *, int);
int res_sendsigned(const u_char *, int, ns_tsig_key *, u_char *, int);
__END_DECLS
#endif
#if !defined(SHARED_LIBBIND) || defined(LIB)
/*
* If libbind is a shared object (well, DLL anyway)
* these externs break the linker when resolv.h is
* included by a lib client (like named)
* Make them go away if a client is including this
*
*/
extern const struct res_sym __p_key_syms[];
extern const struct res_sym __p_cert_syms[];
extern const struct res_sym __p_class_syms[];
extern const struct res_sym __p_type_syms[];
extern const struct res_sym __p_rcode_syms[];
#endif /* SHARED_LIBBIND */
#ifndef ANDROID_CHANGES
#define dn_comp __dn_comp
#endif
#define dn_count_labels __dn_count_labels
#define dn_skipname __dn_skipname
#define fp_resstat __fp_resstat
#define loc_aton __loc_aton
#define loc_ntoa __loc_ntoa
#define p_cdname __p_cdname
#define p_cdnname __p_cdnname
#define p_class __p_class
#define p_fqname __p_fqname
#define p_fqnname __p_fqnname
#define p_option __p_option
#define p_secstodate __p_secstodate
#define p_section __p_section
#define p_time __p_time
#define p_type __p_type
#define p_rcode __p_rcode
#define p_sockun __p_sockun
#define putlong __putlong
#define putshort __putshort
#define res_dnok __res_dnok
#define res_findzonecut __res_findzonecut
#define res_findzonecut2 __res_findzonecut2
#define res_hnok __res_hnok
#define res_hostalias __res_hostalias
#define res_mailok __res_mailok
#define res_nameinquery __res_nameinquery
#define res_nclose __res_nclose
#define res_ninit __res_ninit
#define res_nmkquery __res_nmkquery
#define res_pquery __res_pquery
#define res_nquery __res_nquery
#define res_nquerydomain __res_nquerydomain
#define res_nsearch __res_nsearch
#define res_nsend __res_nsend
#define res_nsendsigned __res_nsendsigned
#define res_nisourserver __res_nisourserver
#define res_ownok __res_ownok
#define res_queriesmatch __res_queriesmatch
#define res_randomid __res_randomid
#define sym_ntop __sym_ntop
#define sym_ntos __sym_ntos
#define sym_ston __sym_ston
#define res_nopt __res_nopt
#define res_ndestroy __res_ndestroy
#define res_nametoclass __res_nametoclass
#define res_nametotype __res_nametotype
#define res_setservers __res_setservers
#define res_getservers __res_getservers
#define res_buildprotolist __res_buildprotolist
#define res_destroyprotolist __res_destroyprotolist
#define res_destroyservicelist __res_destroyservicelist
#define res_get_nibblesuffix __res_get_nibblesuffix
#define res_get_nibblesuffix2 __res_get_nibblesuffix2
#define res_ourserver_p __res_ourserver_p
#define res_protocolname __res_protocolname
#define res_protocolnumber __res_protocolnumber
#define res_send_setqhook __res_send_setqhook
#define res_send_setrhook __res_send_setrhook
#define res_servicename __res_servicename
#define res_servicenumber __res_servicenumber
__BEGIN_DECLS
int res_hnok(const char *);
int res_ownok(const char *);
int res_mailok(const char *);
int res_dnok(const char *);
int sym_ston(const struct res_sym *, const char *, int *);
const char * sym_ntos(const struct res_sym *, int, int *);
const char * sym_ntop(const struct res_sym *, int, int *);
#ifndef ANDROID_CHANGES
int b64_ntop(u_char const *, size_t, char *, size_t);
int b64_pton(char const *, u_char *, size_t);
#endif
int loc_aton(const char *, u_char *);
const char * loc_ntoa(const u_char *, char *);
int dn_skipname(const u_char *, const u_char *);
void putlong(uint32_t, u_char *);
void putshort(uint16_t, u_char *);
#ifndef __ultrix__
uint16_t _getshort(const u_char *);
uint32_t _getlong(const u_char *);
#endif
const char * p_class(int);
const char * p_time(uint32_t);
const char * p_type(int);
const char * p_rcode(int);
const char * p_sockun(union res_sockaddr_union, char *, size_t);
const u_char * p_cdnname(const u_char *, const u_char *, int, FILE *);
const u_char * p_cdname(const u_char *, const u_char *, FILE *);
const u_char * p_fqnname(const u_char *, const u_char *,
int, char *, int);
const u_char * p_fqname(const u_char *, const u_char *, FILE *);
const char * p_option(u_long);
char * p_secstodate(u_long);
int dn_count_labels(const char *);
u_int res_randomid(void);
int res_nameinquery(const char *, int, int, const u_char *,
const u_char *);
int res_queriesmatch(const u_char *, const u_char *,
const u_char *, const u_char *);
const char * p_section(int, int);
/* Things involving a resolver context. */
int res_ninit(res_state);
int res_nisourserver(const res_state, const struct sockaddr_in *);
void fp_resstat(const res_state, FILE *);
void res_pquery(const res_state, const u_char *, int, FILE *);
const char * res_hostalias(const res_state, const char *, char *, size_t);
int res_nquery(res_state, const char *, int, int, u_char *, int);
int res_nsearch(res_state, const char *, int, int, u_char *, int);
int res_nquerydomain(res_state, const char *, const char *,
int, int, u_char *, int);
int res_nmkquery(res_state, int, const char *, int, int,
const u_char *, int, const u_char *,
u_char *, int);
int res_nsend(res_state, const u_char *, int, u_char *, int);
int res_nsendsigned(res_state, const u_char *, int,
ns_tsig_key *, u_char *, int);
int res_findzonecut(res_state, const char *, ns_class, int,
char *, size_t, struct in_addr *, int);
int res_findzonecut2(res_state, const char *, ns_class, int,
char *, size_t,
union res_sockaddr_union *, int);
void res_nclose(res_state);
int res_nopt(res_state, int, u_char *, int, int);
void res_send_setqhook(res_send_qhook);
void res_send_setrhook(res_send_rhook);
int __res_vinit(res_state, int);
void res_destroyservicelist(void);
const char * res_servicename(uint16_t, const char *);
const char * res_protocolname(int);
void res_destroyprotolist(void);
void res_buildprotolist(void);
const char * res_get_nibblesuffix(res_state);
const char * res_get_nibblesuffix2(res_state);
void res_ndestroy(res_state);
uint16_t res_nametoclass(const char *, int *);
uint16_t res_nametotype(const char *, int *);
void res_setservers(res_state,
const union res_sockaddr_union *, int);
int res_getservers(res_state,
union res_sockaddr_union *, int);
void res_setiface();
void res_setmark();
u_int res_randomid(void);
__END_DECLS
#endif /* !_RESOLV_PRIVATE_H_ */

32
libc/dns/include/resolv_static.h Normal file
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#ifndef _RESOLV_STATIC_H
#define _RESOLV_STATIC_H
#include <netdb.h>
/* this structure contains all the variables that were declared
* 'static' in the original NetBSD resolver code.
*
* this caused vast amounts of crashes and memory corruptions
* when the resolver was being used by multiple threads.
*
* (note: the OpenBSD/FreeBSD resolver has similar 'issues')
*/
#define MAXALIASES 35
#define MAXADDRS 35
typedef struct res_static {
char* h_addr_ptrs[MAXADDRS + 1];
char* host_aliases[MAXALIASES];
char hostbuf[8*1024];
u_int32_t host_addr[16 / sizeof(u_int32_t)]; /* IPv4 or IPv6 */
FILE* hostf;
int stayopen;
const char* servent_ptr;
struct servent servent;
struct hostent host;
} *res_static;
extern res_static __res_get_static(void);
#endif /* _RESOLV_STATIC_H */