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* Versions.def: Add GLIBC_2.9 to libresolv.

Browse source 
* include/resolv.h: Remove hidden proto declarations for __ns_*
	functions.  Add them for __dn_count_labels and __p_secstodate.
	* include/arpa/nameser.h: Add a number of hidden proto declarations.
	Define ns_msg_getflags macro here.
	* resolv/res_debug.c: Add hidden definition for __dn_count_labels
	and __p_secstodate.
	* resolv/Versions: Export functions from <arpa/nameser.h> from
	libresolv in version GLIBC_2.9.
	* resolv/ns_name.c: Integrate changes from bind 9.5.0.  Add necessary
	hidden definitions.
	* resolv/ns_netint.c: Likewise.
	* resolv/ns_parse.c: Likewise.
	* resolv/ns_print.c: Likewise.
	* resolv/ns_samedomain.c: Likewise.
	* resolv/ns_ttl.c: Likewise.
	* resolv/arpa/nameser_compat.h: Likewise.
	* resolv/arpa/nameser.h: Likewise.  Remove macros which redirect
	function calls.
	* resolv/nss_dns/dns-canon.c (_nss_dns_getcanonname_r): Use __ns_get16
	instead of ns_get16.
	* resolv/nss_dns/dns-host.c (getanswer_r): Use __ns_get16 and
	__ns_get32 instead of ns_get16 and ns_get32 respectively.
	(gaih_getanswer_slice): Likewise.
	* resolv/Makefile (libresolv-routines): Add ns_date.
	* resolv/ns_date.c: New file.
This commit is contained in:
Ulrich Drepper 2008-08-01 17:16:31 +00:00
parent 17756df399
commit cd5743fdec
18 changed files with 1093 additions and 571 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
ChangeLog
View file

@ -1,5 +1,32 @@
2008-08-01 Ulrich Drepper <drepper@redhat.com>
* Versions.def: Add GLIBC_2.9 to libresolv.
* include/resolv.h: Remove hidden proto declarations for __ns_*
functions. Add them for __dn_count_labels and __p_secstodate.
* include/arpa/nameser.h: Add a number of hidden proto declarations.
Define ns_msg_getflags macro here.
* resolv/res_debug.c: Add hidden definition for __dn_count_labels
and __p_secstodate.
* resolv/Versions: Export functions from <arpa/nameser.h> from
libresolv in version GLIBC_2.9.
* resolv/ns_name.c: Integrate changes from bind 9.5.0. Add necessary
hidden definitions.
* resolv/ns_netint.c: Likewise.
* resolv/ns_parse.c: Likewise.
* resolv/ns_print.c: Likewise.
* resolv/ns_samedomain.c: Likewise.
* resolv/ns_ttl.c: Likewise.
* resolv/arpa/nameser_compat.h: Likewise.
* resolv/arpa/nameser.h: Likewise. Remove macros which redirect
function calls.
* resolv/nss_dns/dns-canon.c (_nss_dns_getcanonname_r): Use __ns_get16
instead of ns_get16.
* resolv/nss_dns/dns-host.c (getanswer_r): Use __ns_get16 and
__ns_get32 instead of ns_get16 and ns_get32 respectively.
(gaih_getanswer_slice): Likewise.
* resolv/Makefile (libresolv-routines): Add ns_date.
* resolv/ns_date.c: New file.
* elf/Makefile (check-localplt.out): Also check libresolv and
libcrypt.

1
Versions.def
View file

@ -93,6 +93,7 @@ libresolv {
GLIBC_2.0
GLIBC_2.2
GLIBC_2.3.2
GLIBC_2.9
GLIBC_PRIVATE
}
librt {

29
include/arpa/nameser.h
View file

@ -7,7 +7,7 @@
#include <stdint.h>
#include <netinet/in.h>
extern struct _ns_flagdata _ns_flagdata[] attribute_hidden;
extern const struct _ns_flagdata _ns_flagdata[] attribute_hidden;
#if _STRING_ARCH_unaligned
@ -44,3 +44,30 @@ extern struct _ns_flagdata _ns_flagdata[] attribute_hidden;
} while (0)
#endif
extern u_int __ns_get16 (const u_char *) __THROW;
extern u_long __ns_get32 (const u_char *) __THROW;
#define ns_msg_getflag(handle, flag) \
(((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift)
libresolv_hidden_proto (ns_get16)
libresolv_hidden_proto (ns_get32)
libresolv_hidden_proto (ns_put16)
libresolv_hidden_proto (ns_put32)
libresolv_hidden_proto (ns_initparse)
libresolv_hidden_proto (ns_skiprr)
libresolv_hidden_proto (ns_parserr)
libresolv_hidden_proto (ns_name_ntop)
libresolv_hidden_proto (ns_name_pton)
libresolv_hidden_proto (ns_name_pack)
libresolv_hidden_proto (ns_name_skip)
libresolv_hidden_proto (ns_name_unpack)
libresolv_hidden_proto (ns_name_compress)
libresolv_hidden_proto (ns_name_uncompress)
libresolv_hidden_proto (ns_sprintrr)
libresolv_hidden_proto (ns_sprintrrf)
libresolv_hidden_proto (ns_samedomain)
libresolv_hidden_proto (ns_samename)
libresolv_hidden_proto (ns_makecanon)
libresolv_hidden_proto (ns_format_ttl)

6
include/resolv.h
View file

@ -98,11 +98,9 @@ libresolv_hidden_proto (__res_nameinquery)
libresolv_hidden_proto (__res_queriesmatch)
libresolv_hidden_proto (__res_nsend)
libresolv_hidden_proto (__b64_ntop)
libresolv_hidden_proto (__ns_name_ntop)
libresolv_hidden_proto (__ns_name_unpack)
libresolv_hidden_proto (__ns_get16)
libresolv_hidden_proto (__ns_get32)
libresolv_hidden_proto (__res_nopt)
libresolv_hidden_proto (__dn_count_labels)
libresolv_hidden_proto (__p_secstodate)
extern const char *_res_opcodes[];
libresolv_hidden_proto (_res_opcodes)

5
resolv/Makefile
View file

@ -1,5 +1,4 @@
# Copyright (C) 1994,1995,1996,1997,1998,1999,2000,2001,2003,2004,2007
# Free Software Foundation, Inc.
# Copyright (C) 1994-2001,2003,2004,2007,2008 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
@ -49,7 +48,7 @@ libresolv-routines := gethnamaddr res_comp res_debug \
res_data res_mkquery res_query res_send \
inet_net_ntop inet_net_pton inet_neta base64 \
ns_parse ns_name ns_netint ns_ttl ns_print \
ns_samedomain
ns_samedomain ns_date
libanl-routines := gai_cancel gai_error gai_misc gai_notify gai_suspend \
getaddrinfo_a

13
resolv/Versions
View file

@ -74,6 +74,19 @@ libresolv {
GLIBC_2.3.2 {
__p_rcode;
}
GLIBC_2.9 {
ns_msg_getflag;
ns_get16; ns_get32; ns_put16; ns_put32;
ns_initparse; ns_skiprr; ns_parserr;
ns_sprintrr; ns_sprintrrf;
ns_format_ttl; ns_parse_ttl;
ns_datetosecs;
ns_name_ntol; ns_name_ntop; ns_name_pton;
ns_name_unpack; ns_name_pack;
ns_name_uncompress; ns_name_compress;
ns_name_skip; ns_name_rollback;
ns_samedomain; ns_subdomain; ns_makecanon; ns_samename;
}
GLIBC_PRIVATE {
# Needed in libnss_dns.
__ns_name_unpack; __ns_name_ntop;

397
resolv/arpa/nameser.h
View file

@ -28,6 +28,7 @@
*/
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996-1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
@ -51,6 +52,8 @@
#ifndef _ARPA_NAMESER_H_
#define _ARPA_NAMESER_H_
/*! \file */
#define BIND_4_COMPAT
#include <sys/param.h>
@ -61,7 +64,7 @@
#endif
#include <sys/cdefs.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 (__NAMESER > 19931104)". Do not
@ -69,42 +72,41 @@
* contains a new enough lib/nameser/ to support the feature you need.
*/
#define __NAMESER 19991006 /* New interface version stamp. */
#define __NAMESER 19991006 /*%< New interface version stamp. */
/*
* Define constants based on RFC 883, RFC 1034, RFC 1035
*/
#define NS_PACKETSZ 512 /* maximum packet size */
#define NS_MAXDNAME 1025 /* maximum domain name */
#define NS_MAXCDNAME 255 /* maximum compressed domain name */
#define NS_MAXLABEL 63 /* maximum length of domain label */
#define NS_HFIXEDSZ 12 /* #/bytes of fixed data in header */
#define NS_QFIXEDSZ 4 /* #/bytes of fixed data in query */
#define NS_RRFIXEDSZ 10 /* #/bytes of fixed data in r record */
#define NS_INT32SZ 4 /* #/bytes of data in a u_int32_t */
#define NS_INT16SZ 2 /* #/bytes of data in a u_int16_t */
#define NS_INT8SZ 1 /* #/bytes of data in a u_int8_t */
#define NS_INADDRSZ 4 /* IPv4 T_A */
#define NS_IN6ADDRSZ 16 /* IPv6 T_AAAA */
#define NS_CMPRSFLGS 0xc0 /* Flag bits indicating name compression. */
#define NS_DEFAULTPORT 53 /* For both TCP and UDP. */
#define NS_PACKETSZ 512 /*%< default UDP packet size */
#define NS_MAXDNAME 1025 /*%< maximum domain name */
#define NS_MAXMSG 65535 /*%< maximum message size */
#define NS_MAXCDNAME 255 /*%< maximum compressed domain name */
#define NS_MAXLABEL 63 /*%< maximum length of domain label */
#define NS_HFIXEDSZ 12 /*%< #/bytes of fixed data in header */
#define NS_QFIXEDSZ 4 /*%< #/bytes of fixed data in query */
#define NS_RRFIXEDSZ 10 /*%< #/bytes of fixed data in r record */
#define NS_INT32SZ 4 /*%< #/bytes of data in a u_int32_t */
#define NS_INT16SZ 2 /*%< #/bytes of data in a u_int16_t */
#define NS_INT8SZ 1 /*%< #/bytes of data in a u_int8_t */
#define NS_INADDRSZ 4 /*%< IPv4 T_A */
#define NS_IN6ADDRSZ 16 /*%< IPv6 T_AAAA */
#define NS_CMPRSFLGS 0xc0 /*%< Flag bits indicating name compression. */
#define NS_DEFAULTPORT 53 /*%< For both TCP and UDP. */
/*
* These can be expanded with synonyms, just keep ns_parse.c:ns_parserecord()
* in synch with it.
*/
typedef enum __ns_sect {
ns_s_qd = 0, /* Query: Question. */
ns_s_zn = 0, /* Update: Zone. */
ns_s_an = 1, /* Query: Answer. */
ns_s_pr = 1, /* Update: Prerequisites. */
ns_s_ns = 2, /* Query: Name servers. */
ns_s_ud = 2, /* Update: Update. */
ns_s_ar = 3, /* Query|Update: Additional records. */
ns_s_qd = 0, /*%< Query: Question. */
ns_s_zn = 0, /*%< Update: Zone. */
ns_s_an = 1, /*%< Query: Answer. */
ns_s_pr = 1, /*%< Update: Prerequisites. */
ns_s_ns = 2, /*%< Query: Name servers. */
ns_s_ud = 2, /*%< Update: Update. */
ns_s_ar = 3, /*%< Query|Update: Additional records. */
ns_s_max = 4
} ns_sect;
/*
/*%
* This is a message handle. It is caller allocated and has no dynamic data.
* This structure is intended to be opaque to all but ns_parse.c, thus the
* leading _'s on the member names. Use the accessor functions, not the _'s.
@ -115,25 +117,22 @@ typedef struct __ns_msg {
const u_char *_sections[ns_s_max];
ns_sect _sect;
int _rrnum;
const u_char *_ptr;
const u_char *_msg_ptr;
} ns_msg;
/* Private data structure - do not use from outside library. */
struct _ns_flagdata { int mask, shift; };
extern struct _ns_flagdata _ns_flagdata[];
extern const struct _ns_flagdata _ns_flagdata[];
/* Accessor macros - this is part of the public interface. */
#define ns_msg_getflag(handle, flag) ( \
((handle)._flags & _ns_flagdata[flag].mask) \
>> _ns_flagdata[flag].shift \
)
#define ns_msg_id(handle) ((handle)._id + 0)
#define ns_msg_base(handle) ((handle)._msg + 0)
#define ns_msg_end(handle) ((handle)._eom + 0)
#define ns_msg_size(handle) ((handle)._eom - (handle)._msg)
#define ns_msg_count(handle, section) ((handle)._counts[section] + 0)
/*
/*%
* This is a parsed record. It is caller allocated and has no dynamic data.
*/
typedef struct __ns_rr {
@ -153,56 +152,58 @@ typedef struct __ns_rr {
#define ns_rr_rdlen(rr) ((rr).rdlength + 0)
#define ns_rr_rdata(rr) ((rr).rdata + 0)
/*
/*%
* These don't have to be in the same order as in the packet flags word,
* and they can even overlap in some cases, but they will need to be kept
* in synch with ns_parse.c:ns_flagdata[].
*/
typedef enum __ns_flag {
ns_f_qr, /* Question/Response. */
ns_f_opcode, /* Operation code. */
ns_f_aa, /* Authoritative Answer. */
ns_f_tc, /* Truncation occurred. */
ns_f_rd, /* Recursion Desired. */
ns_f_ra, /* Recursion Available. */
ns_f_z, /* MBZ. */
ns_f_ad, /* Authentic Data (DNSSEC). */
ns_f_cd, /* Checking Disabled (DNSSEC). */
ns_f_rcode, /* Response code. */
ns_f_qr, /*%< Question/Response. */
ns_f_opcode, /*%< Operation code. */
ns_f_aa, /*%< Authoritative Answer. */
ns_f_tc, /*%< Truncation occurred. */
ns_f_rd, /*%< Recursion Desired. */
ns_f_ra, /*%< Recursion Available. */
ns_f_z, /*%< MBZ. */
ns_f_ad, /*%< Authentic Data (DNSSEC). */
ns_f_cd, /*%< Checking Disabled (DNSSEC). */
ns_f_rcode, /*%< Response code. */
ns_f_max
} ns_flag;
/*
/*%
* Currently defined opcodes.
*/
typedef enum __ns_opcode {
ns_o_query = 0, /* Standard query. */
ns_o_iquery = 1, /* Inverse query (deprecated/unsupported). */
ns_o_status = 2, /* Name server status query (unsupported). */
ns_o_query = 0, /*%< Standard query. */
ns_o_iquery = 1, /*%< Inverse query (deprecated/unsupported). */
ns_o_status = 2, /*%< Name server status query (unsupported). */
/* Opcode 3 is undefined/reserved. */
ns_o_notify = 4, /* Zone change notification. */
ns_o_update = 5, /* Zone update message. */
ns_o_notify = 4, /*%< Zone change notification. */
ns_o_update = 5, /*%< Zone update message. */
ns_o_max = 6
} ns_opcode;
/*
/*%
* Currently defined response codes.
*/
typedef enum __ns_rcode {
ns_r_noerror = 0, /* No error occurred. */
ns_r_formerr = 1, /* Format error. */
ns_r_servfail = 2, /* Server failure. */
ns_r_nxdomain = 3, /* Name error. */
ns_r_notimpl = 4, /* Unimplemented. */
ns_r_refused = 5, /* Operation refused. */
ns_r_noerror = 0, /*%< No error occurred. */
ns_r_formerr = 1, /*%< Format error. */
ns_r_servfail = 2, /*%< Server failure. */
ns_r_nxdomain = 3, /*%< Name error. */
ns_r_notimpl = 4, /*%< Unimplemented. */
ns_r_refused = 5, /*%< Operation refused. */
/* these are for BIND_UPDATE */
ns_r_yxdomain = 6, /* Name exists */
ns_r_yxrrset = 7, /* RRset exists */
ns_r_nxrrset = 8, /* RRset does not exist */
ns_r_notauth = 9, /* Not authoritative for zone */
ns_r_notzone = 10, /* Zone of record different from zone section */
ns_r_yxdomain = 6, /*%< Name exists */
ns_r_yxrrset = 7, /*%< RRset exists */
ns_r_nxrrset = 8, /*%< RRset does not exist */
ns_r_notauth = 9, /*%< Not authoritative for zone */
ns_r_notzone = 10, /*%< Zone of record different from zone section */
ns_r_max = 11,
/* The following are TSIG extended errors */
/* The following are EDNS extended rcodes */
ns_r_badvers = 16,
/* The following are TSIG errors */
ns_r_badsig = 16,
ns_r_badkey = 17,
ns_r_badtime = 18
@ -215,7 +216,7 @@ typedef enum __ns_update_operation {
ns_uop_max = 2
} ns_update_operation;
/*
/*%
* This structure is used for TSIG authenticated messages
*/
struct ns_tsig_key {
@ -225,7 +226,7 @@ struct ns_tsig_key {
};
typedef struct ns_tsig_key ns_tsig_key;
/*
/*%
* This structure is used for TSIG authenticated TCP messages
*/
struct ns_tcp_tsig_state {
@ -245,59 +246,61 @@ typedef struct ns_tcp_tsig_state ns_tcp_tsig_state;
#define NS_TSIG_ERROR_NO_SPACE -11
#define NS_TSIG_ERROR_FORMERR -12
/*
/*%
* Currently defined type values for resources and queries.
*/
typedef enum __ns_type {
ns_t_invalid = 0, /* Cookie. */
ns_t_a = 1, /* Host address. */
ns_t_ns = 2, /* Authoritative server. */
ns_t_md = 3, /* Mail destination. */
ns_t_mf = 4, /* Mail forwarder. */
ns_t_cname = 5, /* Canonical name. */
ns_t_soa = 6, /* Start of authority zone. */
ns_t_mb = 7, /* Mailbox domain name. */
ns_t_mg = 8, /* Mail group member. */
ns_t_mr = 9, /* Mail rename name. */
ns_t_null = 10, /* Null resource record. */
ns_t_wks = 11, /* Well known service. */
ns_t_ptr = 12, /* Domain name pointer. */
ns_t_hinfo = 13, /* Host information. */
ns_t_minfo = 14, /* Mailbox information. */
ns_t_mx = 15, /* Mail routing information. */
ns_t_txt = 16, /* Text strings. */
ns_t_rp = 17, /* Responsible person. */
ns_t_afsdb = 18, /* AFS cell database. */
ns_t_x25 = 19, /* X_25 calling address. */
ns_t_isdn = 20, /* ISDN calling address. */
ns_t_rt = 21, /* Router. */
ns_t_nsap = 22, /* NSAP address. */
ns_t_nsap_ptr = 23, /* Reverse NSAP lookup (deprecated). */
ns_t_sig = 24, /* Security signature. */
ns_t_key = 25, /* Security key. */
ns_t_px = 26, /* X.400 mail mapping. */
ns_t_gpos = 27, /* Geographical position (withdrawn). */
ns_t_aaaa = 28, /* Ip6 Address. */
ns_t_loc = 29, /* Location Information. */
ns_t_nxt = 30, /* Next domain (security). */
ns_t_eid = 31, /* Endpoint identifier. */
ns_t_nimloc = 32, /* Nimrod Locator. */
ns_t_srv = 33, /* Server Selection. */
ns_t_atma = 34, /* ATM Address */
ns_t_naptr = 35, /* Naming Authority PoinTeR */
ns_t_kx = 36, /* Key Exchange */
ns_t_cert = 37, /* Certification record */
ns_t_a6 = 38, /* IPv6 address (deprecated, use ns_t_aaaa) */
ns_t_dname = 39, /* Non-terminal DNAME (for IPv6) */
ns_t_sink = 40, /* Kitchen sink (experimentatl) */
ns_t_opt = 41, /* EDNS0 option (meta-RR) */
ns_t_tsig = 250, /* Transaction signature. */
ns_t_ixfr = 251, /* Incremental zone transfer. */
ns_t_axfr = 252, /* Transfer zone of authority. */
ns_t_mailb = 253, /* Transfer mailbox records. */
ns_t_maila = 254, /* Transfer mail agent records. */
ns_t_any = 255, /* Wildcard match. */
ns_t_zxfr = 256, /* BIND-specific, nonstandard. */
ns_t_invalid = 0, /*%< Cookie. */
ns_t_a = 1, /*%< Host address. */
ns_t_ns = 2, /*%< Authoritative server. */
ns_t_md = 3, /*%< Mail destination. */
ns_t_mf = 4, /*%< Mail forwarder. */
ns_t_cname = 5, /*%< Canonical name. */
ns_t_soa = 6, /*%< Start of authority zone. */
ns_t_mb = 7, /*%< Mailbox domain name. */
ns_t_mg = 8, /*%< Mail group member. */
ns_t_mr = 9, /*%< Mail rename name. */
ns_t_null = 10, /*%< Null resource record. */
ns_t_wks = 11, /*%< Well known service. */
ns_t_ptr = 12, /*%< Domain name pointer. */
ns_t_hinfo = 13, /*%< Host information. */
ns_t_minfo = 14, /*%< Mailbox information. */
ns_t_mx = 15, /*%< Mail routing information. */
ns_t_txt = 16, /*%< Text strings. */
ns_t_rp = 17, /*%< Responsible person. */
ns_t_afsdb = 18, /*%< AFS cell database. */
ns_t_x25 = 19, /*%< X_25 calling address. */
ns_t_isdn = 20, /*%< ISDN calling address. */
ns_t_rt = 21, /*%< Router. */
ns_t_nsap = 22, /*%< NSAP address. */
ns_t_nsap_ptr = 23, /*%< Reverse NSAP lookup (deprecated). */
ns_t_sig = 24, /*%< Security signature. */
ns_t_key = 25, /*%< Security key. */
ns_t_px = 26, /*%< X.400 mail mapping. */
ns_t_gpos = 27, /*%< Geographical position (withdrawn). */
ns_t_aaaa = 28, /*%< Ip6 Address. */
ns_t_loc = 29, /*%< Location Information. */
ns_t_nxt = 30, /*%< Next domain (security). */
ns_t_eid = 31, /*%< Endpoint identifier. */
ns_t_nimloc = 32, /*%< Nimrod Locator. */
ns_t_srv = 33, /*%< Server Selection. */
ns_t_atma = 34, /*%< ATM Address */
ns_t_naptr = 35, /*%< Naming Authority PoinTeR */
ns_t_kx = 36, /*%< Key Exchange */
ns_t_cert = 37, /*%< Certification record */
ns_t_a6 = 38, /*%< IPv6 address (deprecated, use ns_t_aaaa) */
ns_t_dname = 39, /*%< Non-terminal DNAME (for IPv6) */
ns_t_sink = 40, /*%< Kitchen sink (experimentatl) */
ns_t_opt = 41, /*%< EDNS0 option (meta-RR) */
ns_t_apl = 42, /*%< Address prefix list (RFC3123) */
ns_t_tkey = 249, /*%< Transaction key */
ns_t_tsig = 250, /*%< Transaction signature. */
ns_t_ixfr = 251, /*%< Incremental zone transfer. */
ns_t_axfr = 252, /*%< Transfer zone of authority. */
ns_t_mailb = 253, /*%< Transfer mailbox records. */
ns_t_maila = 254, /*%< Transfer mail agent records. */
ns_t_any = 255, /*%< Wildcard match. */
ns_t_zxfr = 256, /*%< BIND-specific, nonstandard. */
ns_t_max = 65536
} ns_type;
@ -312,61 +315,61 @@ typedef enum __ns_type {
#define ns_t_xfr_p(t) ((t) == ns_t_axfr || (t) == ns_t_ixfr || \
(t) == ns_t_zxfr)
/*
/*%
* Values for class field
*/
typedef enum __ns_class {
ns_c_invalid = 0, /* Cookie. */
ns_c_in = 1, /* Internet. */
ns_c_2 = 2, /* unallocated/unsupported. */
ns_c_chaos = 3, /* MIT Chaos-net. */
ns_c_hs = 4, /* MIT Hesiod. */
ns_c_invalid = 0, /*%< Cookie. */
ns_c_in = 1, /*%< Internet. */
ns_c_2 = 2, /*%< unallocated/unsupported. */
ns_c_chaos = 3, /*%< MIT Chaos-net. */
ns_c_hs = 4, /*%< MIT Hesiod. */
/* Query class values which do not appear in resource records */
ns_c_none = 254, /* for prereq. sections in update requests */
ns_c_any = 255, /* Wildcard match. */
ns_c_none = 254, /*%< for prereq. sections in update requests */
ns_c_any = 255, /*%< Wildcard match. */
ns_c_max = 65536
} ns_class;
/* DNSSEC constants. */
typedef enum __ns_key_types {
ns_kt_rsa = 1, /* key type RSA/MD5 */
ns_kt_dh = 2, /* Diffie Hellman */
ns_kt_dsa = 3, /* Digital Signature Standard (MANDATORY) */
ns_kt_private = 254 /* Private key type starts with OID */
ns_kt_rsa = 1, /*%< key type RSA/MD5 */
ns_kt_dh = 2, /*%< Diffie Hellman */
ns_kt_dsa = 3, /*%< Digital Signature Standard (MANDATORY) */
ns_kt_private = 254 /*%< Private key type starts with OID */
} ns_key_types;
typedef enum __ns_cert_types {
cert_t_pkix = 1, /* PKIX (X.509v3) */
cert_t_spki = 2, /* SPKI */
cert_t_pgp = 3, /* PGP */
cert_t_url = 253, /* URL private type */
cert_t_oid = 254 /* OID private type */
cert_t_pkix = 1, /*%< PKIX (X.509v3) */
cert_t_spki = 2, /*%< SPKI */
cert_t_pgp = 3, /*%< PGP */
cert_t_url = 253, /*%< URL private type */
cert_t_oid = 254 /*%< OID private type */
} ns_cert_types;
/* Flags field of the KEY RR rdata. */
#define NS_KEY_TYPEMASK 0xC000 /* Mask for "type" bits */
#define NS_KEY_TYPE_AUTH_CONF 0x0000 /* Key usable for both */
#define NS_KEY_TYPE_CONF_ONLY 0x8000 /* Key usable for confidentiality */
#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /* Key usable for authentication */
#define NS_KEY_TYPE_NO_KEY 0xC000 /* No key usable for either; no key */
#define NS_KEY_TYPEMASK 0xC000 /*%< Mask for "type" bits */
#define NS_KEY_TYPE_AUTH_CONF 0x0000 /*%< Key usable for both */
#define NS_KEY_TYPE_CONF_ONLY 0x8000 /*%< Key usable for confidentiality */
#define NS_KEY_TYPE_AUTH_ONLY 0x4000 /*%< Key usable for authentication */
#define NS_KEY_TYPE_NO_KEY 0xC000 /*%< No key usable for either; no key */
/* The type bits can also be interpreted independently, as single bits: */
#define NS_KEY_NO_AUTH 0x8000 /* Key unusable for authentication */
#define NS_KEY_NO_CONF 0x4000 /* Key unusable for confidentiality */
#define NS_KEY_NO_AUTH 0x8000 /*%< Key unusable for authentication */
#define NS_KEY_NO_CONF 0x4000 /*%< Key unusable for confidentiality */
#define NS_KEY_RESERVED2 0x2000 /* Security is *mandatory* if bit=0 */
#define NS_KEY_EXTENDED_FLAGS 0x1000 /* reserved - must be zero */
#define NS_KEY_RESERVED4 0x0800 /* reserved - must be zero */
#define NS_KEY_RESERVED5 0x0400 /* reserved - must be zero */
#define NS_KEY_NAME_TYPE 0x0300 /* these bits determine the type */
#define NS_KEY_NAME_USER 0x0000 /* key is assoc. with user */
#define NS_KEY_NAME_ENTITY 0x0200 /* key is assoc. with entity eg host */
#define NS_KEY_NAME_ZONE 0x0100 /* key is zone key */
#define NS_KEY_NAME_RESERVED 0x0300 /* reserved meaning */
#define NS_KEY_RESERVED8 0x0080 /* reserved - must be zero */
#define NS_KEY_RESERVED9 0x0040 /* reserved - must be zero */
#define NS_KEY_RESERVED10 0x0020 /* reserved - must be zero */
#define NS_KEY_RESERVED11 0x0010 /* reserved - must be zero */
#define NS_KEY_SIGNATORYMASK 0x000F /* key can sign RR's of same name */
#define NS_KEY_EXTENDED_FLAGS 0x1000 /*%< reserved - must be zero */
#define NS_KEY_RESERVED4 0x0800 /*%< reserved - must be zero */
#define NS_KEY_RESERVED5 0x0400 /*%< reserved - must be zero */
#define NS_KEY_NAME_TYPE 0x0300 /*%< these bits determine the type */
#define NS_KEY_NAME_USER 0x0000 /*%< key is assoc. with user */
#define NS_KEY_NAME_ENTITY 0x0200 /*%< key is assoc. with entity eg host */
#define NS_KEY_NAME_ZONE 0x0100 /*%< key is zone key */
#define NS_KEY_NAME_RESERVED 0x0300 /*%< reserved meaning */
#define NS_KEY_RESERVED8 0x0080 /*%< reserved - must be zero */
#define NS_KEY_RESERVED9 0x0040 /*%< reserved - must be zero */
#define NS_KEY_RESERVED10 0x0020 /*%< reserved - must be zero */
#define NS_KEY_RESERVED11 0x0010 /*%< reserved - must be zero */
#define NS_KEY_SIGNATORYMASK 0x000F /*%< key can sign RR's of same name */
#define NS_KEY_RESERVED_BITMASK ( NS_KEY_RESERVED2 | \
NS_KEY_RESERVED4 | \
NS_KEY_RESERVED5 | \
@ -374,16 +377,14 @@ typedef enum __ns_cert_types {
NS_KEY_RESERVED9 | \
NS_KEY_RESERVED10 | \
NS_KEY_RESERVED11 )
#define NS_KEY_RESERVED_BITMASK2 0xFFFF /* no bits defined here */
#define NS_KEY_RESERVED_BITMASK2 0xFFFF /*%< no bits defined here */
/* The Algorithm field of the KEY and SIG RR's is an integer, {1..254} */
#define NS_ALG_MD5RSA 1 /* MD5 with RSA */
#define NS_ALG_DH 2 /* Diffie Hellman KEY */
#define NS_ALG_DSA 3 /* DSA KEY */
#define NS_ALG_MD5RSA 1 /*%< MD5 with RSA */
#define NS_ALG_DH 2 /*%< Diffie Hellman KEY */
#define NS_ALG_DSA 3 /*%< DSA KEY */
#define NS_ALG_DSS NS_ALG_DSA
#define NS_ALG_EXPIRE_ONLY 253 /* No alg, no security */
#define NS_ALG_PRIVATE_OID 254 /* Key begins with OID giving alg */
#define NS_ALG_EXPIRE_ONLY 253 /*%< No alg, no security */
#define NS_ALG_PRIVATE_OID 254 /*%< Key begins with OID giving alg */
/* Protocol values */
/* value 0 is reserved */
#define NS_KEY_PROT_TLS 1
@ -393,8 +394,8 @@ typedef enum __ns_cert_types {
#define NS_KEY_PROT_ANY 255
/* Signatures */
#define NS_MD5RSA_MIN_BITS 512 /* Size of a mod or exp in bits */
#define NS_MD5RSA_MAX_BITS 2552
#define NS_MD5RSA_MIN_BITS 512 /*%< Size of a mod or exp in bits */
#define NS_MD5RSA_MAX_BITS 4096
/* Total of binary mod and exp */
#define NS_MD5RSA_MAX_BYTES ((NS_MD5RSA_MAX_BITS+7/8)*2+3)
/* Max length of text sig block */
@ -407,15 +408,14 @@ typedef enum __ns_cert_types {
#define NS_DSA_MAX_BYTES 405
/* Offsets into SIG record rdata to find various values */
#define NS_SIG_TYPE 0 /* Type flags */
#define NS_SIG_ALG 2 /* Algorithm */
#define NS_SIG_LABELS 3 /* How many labels in name */
#define NS_SIG_OTTL 4 /* Original TTL */
#define NS_SIG_EXPIR 8 /* Expiration time */
#define NS_SIG_SIGNED 12 /* Signature time */
#define NS_SIG_FOOT 16 /* Key footprint */
#define NS_SIG_SIGNER 18 /* Domain name of who signed it */
#define NS_SIG_TYPE 0 /*%< Type flags */
#define NS_SIG_ALG 2 /*%< Algorithm */
#define NS_SIG_LABELS 3 /*%< How many labels in name */
#define NS_SIG_OTTL 4 /*%< Original TTL */
#define NS_SIG_EXPIR 8 /*%< Expiration time */
#define NS_SIG_SIGNED 12 /*%< Signature time */
#define NS_SIG_FOOT 16 /*%< Key footprint */
#define NS_SIG_SIGNER 18 /*%< Domain name of who signed it */
/* How RR types are represented as bit-flags in NXT records */
#define NS_NXT_BITS 8
#define NS_NXT_BIT_SET( n,p) (p[(n)/NS_NXT_BITS] |= (0x80>>((n)%NS_NXT_BITS)))
@ -423,16 +423,17 @@ typedef enum __ns_cert_types {
#define NS_NXT_BIT_ISSET(n,p) (p[(n)/NS_NXT_BITS] & (0x80>>((n)%NS_NXT_BITS)))
#define NS_NXT_MAX 127
/*
* EDNS0 extended flags, host order.
/*%
* EDNS0 extended flags and option codes, host order.
*/
#define NS_OPT_DNSSEC_OK 0x8000U
#define NS_OPT_NSID 3
/*
/*%
* Inline versions of get/put short/long. Pointer is advanced.
*/
#define NS_GET16(s, cp) do { \
register u_char *t_cp = (u_char *)(cp); \
register const u_char *t_cp = (const u_char *)(cp); \
(s) = ((u_int16_t)t_cp[0] << 8) \
| ((u_int16_t)t_cp[1]) \
; \
@ -440,7 +441,7 @@ typedef enum __ns_cert_types {
} while (0)
#define NS_GET32(l, cp) do { \
register u_char *t_cp = (u_char *)(cp); \
register const u_char *t_cp = (const u_char *)(cp); \
(l) = ((u_int32_t)t_cp[0] << 24) \
| ((u_int32_t)t_cp[1] << 16) \
| ((u_int32_t)t_cp[2] << 8) \
@ -467,43 +468,8 @@ typedef enum __ns_cert_types {
(cp) += NS_INT32SZ; \
} while (0)
/*
* ANSI C identifier hiding for bind's lib/nameser.
*/
#define ns_get16 __ns_get16
#define ns_get32 __ns_get32
#define ns_put16 __ns_put16
#define ns_put32 __ns_put32
#define ns_initparse __ns_initparse
#define ns_skiprr __ns_skiprr
#define ns_parserr __ns_parserr
#define ns_sprintrr __ns_sprintrr
#define ns_sprintrrf __ns_sprintrrf
#define ns_format_ttl __ns_format_ttl
#define ns_parse_ttl __ns_parse_ttl
#define ns_datetosecs __ns_datetosecs
#define ns_name_ntol __ns_name_ntol
#define ns_name_ntop __ns_name_ntop
#define ns_name_pton __ns_name_pton
#define ns_name_unpack __ns_name_unpack
#define ns_name_pack __ns_name_pack
#define ns_name_compress __ns_name_compress
#define ns_name_uncompress __ns_name_uncompress
#define ns_name_skip __ns_name_skip
#define ns_name_rollback __ns_name_rollback
#define ns_sign __ns_sign
#define ns_sign_tcp __ns_sign_tcp
#define ns_sign_tcp_init __ns_sign_tcp_init
#define ns_find_tsig __ns_find_tsig
#define ns_verify __ns_verify
#define ns_verify_tcp __ns_verify_tcp
#define ns_verify_tcp_init __ns_verify_tcp_init
#define ns_samedomain __ns_samedomain
#define ns_subdomain __ns_subdomain
#define ns_makecanon __ns_makecanon
#define ns_samename __ns_samename
__BEGIN_DECLS
int ns_msg_getflag (ns_msg, int) __THROW;
u_int ns_get16 (const u_char *) __THROW;
u_long ns_get32 (const u_char *) __THROW;
void ns_put16 (u_int, u_char *) __THROW;
@ -538,8 +504,14 @@ void ns_name_rollback (const u_char *, const u_char **,
const u_char **) __THROW;
int ns_sign (u_char *, int *, int, int, void *,
const u_char *, int, u_char *, int *, time_t) __THROW;
int ns_sign2 (u_char *, int *, int, int, void *,
const u_char *, int, u_char *, int *, time_t,
u_char **, u_char **) __THROW;
int ns_sign_tcp (u_char *, int *, int, int,
ns_tcp_tsig_state *, int) __THROW;
int ns_sign_tcp2 (u_char *, int *, int, int,
ns_tcp_tsig_state *, int,
u_char **, u_char **) __THROW;
int ns_sign_tcp_init (void *, const u_char *, int,
ns_tcp_tsig_state *) __THROW;
u_char *ns_find_tsig (u_char *, u_char *) __THROW;
@ -560,3 +532,4 @@ __END_DECLS
#endif
#endif /* !_ARPA_NAMESER_H_ */
/*! \file */

59
resolv/arpa/nameser_compat.h
View file

@ -26,7 +26,7 @@
* SUCH DAMAGE.
*/
/*
/*%
* from nameser.h 8.1 (Berkeley) 6/2/93
* $BINDId: nameser_compat.h,v 8.11 1999/01/02 08:00:58 vixie Exp $
*/
@ -34,11 +34,11 @@
#ifndef _ARPA_NAMESER_COMPAT_
#define _ARPA_NAMESER_COMPAT_
#define __BIND 19950621 /* (DEAD) interface version stamp. */
#define __BIND 19950621 /*%< (DEAD) interface version stamp. */
#include <endian.h>
/*
/*%
* Structure for query header. The order of the fields is machine- and
* compiler-dependent, depending on the byte/bit order and the layout
* of bit fields. We use bit fields only in int variables, as this
@ -46,40 +46,40 @@
*/
typedef struct {
unsigned id :16; /* query identification number */
unsigned id :16; /*%< query identification number */
#if BYTE_ORDER == BIG_ENDIAN
/* fields in third byte */
unsigned qr: 1; /* response flag */
unsigned opcode: 4; /* purpose of message */
unsigned aa: 1; /* authoritive answer */
unsigned tc: 1; /* truncated message */
unsigned rd: 1; /* recursion desired */
unsigned qr: 1; /*%< response flag */
unsigned opcode: 4; /*%< purpose of message */
unsigned aa: 1; /*%< authoritive answer */
unsigned tc: 1; /*%< truncated message */
unsigned rd: 1; /*%< recursion desired */
/* fields in fourth byte */
unsigned ra: 1; /* recursion available */
unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */
unsigned ad: 1; /* authentic data from named */
unsigned cd: 1; /* checking disabled by resolver */
unsigned rcode :4; /* response code */
unsigned ra: 1; /*%< recursion available */
unsigned unused :1; /*%< unused bits (MBZ as of 4.9.3a3) */
unsigned ad: 1; /*%< authentic data from named */
unsigned cd: 1; /*%< checking disabled by resolver */
unsigned rcode :4; /*%< response code */
#endif
#if BYTE_ORDER == LITTLE_ENDIAN || BYTE_ORDER == PDP_ENDIAN
/* fields in third byte */
unsigned rd :1; /* recursion desired */
unsigned tc :1; /* truncated message */
unsigned aa :1; /* authoritive answer */
unsigned opcode :4; /* purpose of message */
unsigned qr :1; /* response flag */
unsigned rd :1; /*%< recursion desired */
unsigned tc :1; /*%< truncated message */
unsigned aa :1; /*%< authoritive answer */
unsigned opcode :4; /*%< purpose of message */
unsigned qr :1; /*%< response flag */
/* fields in fourth byte */
unsigned rcode :4; /* response code */
unsigned cd: 1; /* checking disabled by resolver */
unsigned ad: 1; /* authentic data from named */
unsigned unused :1; /* unused bits (MBZ as of 4.9.3a3) */
unsigned ra :1; /* recursion available */
unsigned rcode :4; /*%< response code */
unsigned cd: 1; /*%< checking disabled by resolver */
unsigned ad: 1; /*%< authentic data from named */
unsigned unused :1; /*%< unused bits (MBZ as of 4.9.3a3) */
unsigned ra :1; /*%< recursion available */
#endif
/* remaining bytes */
unsigned qdcount :16; /* number of question entries */
unsigned ancount :16; /* number of answer entries */
unsigned nscount :16; /* number of authority entries */
unsigned arcount :16; /* number of resource entries */
unsigned qdcount :16; /*%< number of question entries */
unsigned ancount :16; /*%< number of answer entries */
unsigned nscount :16; /*%< number of authority entries */
unsigned arcount :16; /*%< number of resource entries */
} HEADER;
#define PACKETSZ NS_PACKETSZ
@ -91,6 +91,7 @@ typedef struct {
#define RRFIXEDSZ NS_RRFIXEDSZ
#define INT32SZ NS_INT32SZ
#define INT16SZ NS_INT16SZ
#define INT8SZ NS_INT8SZ
#define INADDRSZ NS_INADDRSZ
#define IN6ADDRSZ NS_IN6ADDRSZ
#define INDIR_MASK NS_CMPRSFLGS
@ -161,6 +162,7 @@ typedef struct {
#define T_SRV ns_t_srv
#define T_ATMA ns_t_atma
#define T_NAPTR ns_t_naptr
#define T_A6 ns_t_a6
#define T_DNAME ns_t_dname
#define T_TSIG ns_t_tsig
#define T_IXFR ns_t_ixfr
@ -182,3 +184,4 @@ typedef struct {
#define PUTLONG NS_PUT32
#endif /* _ARPA_NAMESER_COMPAT_ */
/*! \file */

121
resolv/ns_date.c Normal file
View file

@ -0,0 +1,121 @@
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 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.
*/
#if !defined(_LIBC) && !defined(lint)
static const char rcsid[] = "$Id$";
#endif
/* Import. */
#include <arpa/nameser.h>
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#define SPRINTF(x) ((size_t)sprintf x)
/* Forward. */
static int datepart(const char *, int, int, int, int *);
/* Public. */
/*%
* Convert a date in ASCII into the number of seconds since
* 1 January 1970 (GMT assumed). Format is yyyymmddhhmmss, all
* digits required, no spaces allowed.
*/
u_int32_t
ns_datetosecs(const char *cp, int *errp) {
struct tm time;
u_int32_t result;
int mdays, i;
static const int days_per_month[12] =
{31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
if (strlen(cp) != 14U) {
*errp = 1;
return (0);
}
*errp = 0;
memset(&time, 0, sizeof time);
time.tm_year = datepart(cp + 0, 4, 1990, 9999, errp) - 1900;
time.tm_mon = datepart(cp + 4, 2, 01, 12, errp) - 1;
time.tm_mday = datepart(cp + 6, 2, 01, 31, errp);
time.tm_hour = datepart(cp + 8, 2, 00, 23, errp);
time.tm_min = datepart(cp + 10, 2, 00, 59, errp);
time.tm_sec = datepart(cp + 12, 2, 00, 59, errp);
if (*errp) /*%< Any parse errors? */
return (0);
/*
* OK, now because timegm() is not available in all environments,
* we will do it by hand. Roll up sleeves, curse the gods, begin!
*/
#define SECS_PER_DAY ((u_int32_t)24*60*60)
#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
result = time.tm_sec; /*%< Seconds */
result += time.tm_min * 60; /*%< Minutes */
result += time.tm_hour * (60*60); /*%< Hours */
result += (time.tm_mday - 1) * SECS_PER_DAY; /*%< Days */
/* Months are trickier. Look without leaping, then leap */
mdays = 0;
for (i = 0; i < time.tm_mon; i++)
mdays += days_per_month[i];
result += mdays * SECS_PER_DAY; /*%< Months */
if (time.tm_mon > 1 && isleap(1900+time.tm_year))
result += SECS_PER_DAY; /*%< Add leapday for this year */
/* First figure years without leapdays, then add them in. */
/* The loop is slow, FIXME, but simple and accurate. */
result += (time.tm_year - 70) * (SECS_PER_DAY*365); /*%< Years */
for (i = 70; i < time.tm_year; i++)
if (isleap(1900+i))
result += SECS_PER_DAY; /*%< Add leapday for prev year */
return (result);
}
/* Private. */
/*%
* Parse part of a date. Set error flag if any error.
* Don't reset the flag if there is no error.
*/
static int
datepart(const char *buf, int size, int min, int max, int *errp) {
int result = 0;
int i;
for (i = 0; i < size; i++) {
if (!isdigit((unsigned char)(buf[i])))
*errp = 1;
result = (result * 10) + buf[i] - '0';
}
if (result < min)
*errp = 1;
if (result > max)
*errp = 1;
return (result);
}
/*! \file */

591
resolv/ns_name.c
View file

@ -1,18 +1,18 @@
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM 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.
* 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.
*/
#if !defined(_LIBC) && !defined(lint)
@ -24,16 +24,41 @@ static const char rcsid[] = "$BINDId: ns_name.c,v 8.15 2000/03/30 22:53:46 vixie
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <ctype.h>
#include <errno.h>
#include <resolv.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <limits.h>
# define SPRINTF(x) ((size_t)sprintf x)
#define NS_TYPE_ELT 0x40 /*%< EDNS0 extended label type */
#define DNS_LABELTYPE_BITSTRING 0x41
/* Data. */
static const char digits[] = "0123456789";
static const char digitvalue[256] = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*16*/
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*32*/
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*48*/
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /*64*/
-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*80*/
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*96*/
-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*112*/
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*128*/
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /*256*/
};
/* Forward. */
static int special(int);
@ -41,31 +66,40 @@ static int printable(int);
static int dn_find(const u_char *, const u_char *,
const u_char * const *,
const u_char * const *);
static int encode_bitstring(const char **, const char *,
unsigned char **, unsigned char **,
unsigned const char *);
static int labellen(const u_char *);
static int decode_bitstring(const unsigned char **,
char *, const char *);
/* Public. */
/*
* ns_name_ntop(src, dst, dstsiz)
/*%
* Convert an encoded domain name to printable ascii as per RFC1035.
* return:
* Number of bytes written to buffer, or -1 (with errno set)
*\li Number of bytes written to buffer, or -1 (with errno set)
*
* notes:
* The root is returned as "."
* All other domains are returned in non absolute form
*\li The root is returned as "."
*\li All other domains are returned in non absolute form
*/
int
ns_name_ntop(const u_char *src, char *dst, size_t dstsiz) {
ns_name_ntop(const u_char *src, char *dst, size_t dstsiz)
{
const u_char *cp;
char *dn, *eom;
u_char c;
u_int n;
int l;
cp = src;
dn = dst;
eom = dst + dstsiz;
while ((n = *cp++) != 0) {
if ((n & NS_CMPRSFLGS) != 0 && n != 0x41) {
if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
/* Some kind of compression pointer. */
__set_errno (EMSGSIZE);
return (-1);
@ -77,34 +111,31 @@ ns_name_ntop(const u_char *src, char *dst, size_t dstsiz) {
}
*dn++ = '.';
}
if (n == 0x41) {
n = *cp++ / 8;
if (dn + n * 2 + 4 >= eom) {
__set_errno (EMSGSIZE);
return (-1);
}
*dn++ = '\\';
*dn++ = '[';
*dn++ = 'x';
while (n-- > 0) {
c = *cp++;
unsigned u = c >> 4;
*dn++ = u > 9 ? 'a' + u - 10 : '0' + u;
u = c & 0xf;
*dn++ = u > 9 ? 'a' + u - 10 : '0' + u;
}
*dn++ = ']';
continue;
if ((l = labellen(cp - 1)) < 0) {
__set_errno (EMSGSIZE);
return(-1);
}
if (dn + n >= eom) {
if (dn + l >= eom) {
__set_errno (EMSGSIZE);
return (-1);
}
for ((void)NULL; n > 0; n--) {
if ((n & NS_CMPRSFLGS) == NS_TYPE_ELT) {
int m;
if (n != DNS_LABELTYPE_BITSTRING) {
/* XXX: labellen should reject this case */
__set_errno (EINVAL);
return(-1);
}
if ((m = decode_bitstring(&cp, dn, eom)) < 0)
{
__set_errno (EMSGSIZE);
return(-1);
}
dn += m;
continue;
}
for ((void)NULL; l > 0; l--) {
c = *cp++;
if (special(c)) {
if (dn + 1 >= eom) {
@ -146,22 +177,26 @@ ns_name_ntop(const u_char *src, char *dst, size_t dstsiz) {
return (dn - dst);
}
libresolv_hidden_def (ns_name_ntop)
strong_alias (ns_name_ntop, __ns_name_ntop)
/*
* ns_name_pton(src, dst, dstsiz)
/*%
* Convert a ascii string into an encoded domain name as per RFC1035.
*
* return:
* -1 if it fails
* 1 if string was fully qualified
* 0 is string was not fully qualified
*
*\li -1 if it fails
*\li 1 if string was fully qualified
*\li 0 is string was not fully qualified
*
* notes:
* Enforces label and domain length limits.
*\li Enforces label and domain length limits.
*/
int
ns_name_pton(const char *src, u_char *dst, size_t dstsiz) {
ns_name_pton(const char *src, u_char *dst, size_t dstsiz)
{
u_char *label, *bp, *eom;
int c, n, escaped;
int c, n, escaped, e = 0;
char *cp;
escaped = 0;
@ -171,7 +206,28 @@ ns_name_pton(const char *src, u_char *dst, size_t dstsiz) {
while ((c = *src++) != 0) {
if (escaped) {
if ((cp = strchr(digits, c)) != NULL) {
if (c == '[') { /*%< start a bit string label */
if ((cp = strchr(src, ']')) == NULL) {
__set_errno (EINVAL);
return(-1);
}
if ((e = encode_bitstring(&src, cp + 2,
&label, &bp, eom))
!= 0) {
__set_errno (e);
return(-1);
}
escaped = 0;
label = bp++;
if ((c = *src++) == 0)
goto done;
else if (c != '.') {
__set_errno (EINVAL);
return(-1);
}
continue;
}
else if ((cp = strchr(digits, c)) != NULL) {
n = (cp - digits) * 100;
if ((c = *src++) == 0 ||
(cp = strchr(digits, c)) == NULL) {
@ -190,41 +246,6 @@ ns_name_pton(const char *src, u_char *dst, size_t dstsiz) {
return (-1);
}
c = n;
} else if (c == '[' && label == bp - 1 && *src == 'x') {
/* Theoretically we would have to handle \[o
as well but we do not since we do not need
it internally. */
*label = 0x41;
label = bp++;
++src;
while (isxdigit (*src)) {
n = *src > '9' ? *src - 'a' + 10 : *src - '0';
++src;
if (! isxdigit(*src)) {
__set_errno (EMSGSIZE);
return (-1);
}
n <<= 4;
n += *src > '9' ? *src - 'a' + 10 : *src - '0';
if (bp + 1 >= eom) {
__set_errno (EMSGSIZE);
return (-1);
}
*bp++ = n;
++src;
}
*label = (bp - label - 1) * 8;
if (*src++ != ']' || *src++ != '.') {
__set_errno (EMSGSIZE);
return (-1);
}
escaped = 0;
label = bp++;
if (bp >= eom) {
__set_errno (EMSGSIZE);
return (-1);
}
continue;
}
escaped = 0;
} else if (c == '\\') {
@ -232,7 +253,7 @@ ns_name_pton(const char *src, u_char *dst, size_t dstsiz) {
continue;
} else if (c == '.') {
c = (bp - label - 1);
if ((c & NS_CMPRSFLGS) != 0) { /* Label too big. */
if ((c & NS_CMPRSFLGS) != 0) { /*%< Label too big. */
__set_errno (EMSGSIZE);
return (-1);
}
@ -270,10 +291,11 @@ ns_name_pton(const char *src, u_char *dst, size_t dstsiz) {
*bp++ = (u_char)c;
}
c = (bp - label - 1);
if ((c & NS_CMPRSFLGS) != 0) { /* Label too big. */
if ((c & NS_CMPRSFLGS) != 0) { /*%< Label too big. */
__set_errno (EMSGSIZE);
return (-1);
}
done:
if (label >= eom) {
__set_errno (EMSGSIZE);
return (-1);
@ -286,45 +308,57 @@ ns_name_pton(const char *src, u_char *dst, size_t dstsiz) {
}
*bp++ = 0;
}
if ((bp - dst) > MAXCDNAME) { /* src too big */
if ((bp - dst) > MAXCDNAME) { /*%< src too big */
__set_errno (EMSGSIZE);
return (-1);
}
return (0);
}
libresolv_hidden_def (ns_name_pton)
/*
* ns_name_ntol(src, dst, dstsiz)
/*%
* Convert a network strings labels into all lowercase.
*
* return:
* Number of bytes written to buffer, or -1 (with errno set)
*\li Number of bytes written to buffer, or -1 (with errno set)
*
* notes:
* Enforces label and domain length limits.
*\li Enforces label and domain length limits.
*/
int
ns_name_ntol(const u_char *src, u_char *dst, size_t dstsiz) {
ns_name_ntol(const u_char *src, u_char *dst, size_t dstsiz)
{
const u_char *cp;
u_char *dn, *eom;
u_char c;
u_int n;
int l;
cp = src;
dn = dst;
eom = dst + dstsiz;
if (dn >= eom) {
__set_errno (EMSGSIZE);
return (-1);
}
while ((n = *cp++) != 0) {
if ((n & NS_CMPRSFLGS) != 0) {
if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
/* Some kind of compression pointer. */
__set_errno (EMSGSIZE);
return (-1);
}
*dn++ = n;
if (dn + n >= eom) {
if ((l = labellen(cp - 1)) < 0) {
__set_errno (EMSGSIZE);
return (-1);
}
for ((void)NULL; n > 0; n--) {
if (dn + l >= eom) {
__set_errno (EMSGSIZE);
return (-1);
}
for ((void)NULL; l > 0; l--) {
c = *cp++;
if (isupper(c))
*dn++ = tolower(c);
@ -336,11 +370,11 @@ ns_name_ntol(const u_char *src, u_char *dst, size_t dstsiz) {
return (dn - dst);
}
/*
* ns_name_unpack(msg, eom, src, dst, dstsiz)
/*%
* Unpack a domain name from a message, source may be compressed.
*
* return:
* -1 if it fails, or consumed octets if it succeeds.
*\li -1 if it fails, or consumed octets if it succeeds.
*/
int
ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
@ -348,7 +382,7 @@ ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
{
const u_char *srcp, *dstlim;
u_char *dstp;
int n, len, checked;
int n, len, checked, l;
len = -1;
checked = 0;
@ -363,29 +397,22 @@ ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
while ((n = *srcp++) != 0) {
/* Check for indirection. */
switch (n & NS_CMPRSFLGS) {
case 0x40:
if (n == 0x41) {
if (dstp + 1 >= dstlim) {
__set_errno (EMSGSIZE);
return (-1);
}
*dstp++ = 0x41;
n = *srcp++ / 8;
++checked;
} else {
__set_errno (EMSGSIZE);
return (-1); /* flag error */
}
/* FALLTHROUGH */
case 0:
case NS_TYPE_ELT:
/* Limit checks. */
if (dstp + n + 1 >= dstlim || srcp + n >= eom) {
if ((l = labellen(srcp - 1)) < 0) {
__set_errno (EMSGSIZE);
return(-1);
}
if (dstp + l + 1 >= dstlim || srcp + l >= eom) {
__set_errno (EMSGSIZE);
return (-1);
}
checked += n + 1;
dstp = mempcpy(dstp, srcp - 1, n + 1);
srcp += n;
checked += l + 1;
*dstp++ = n;
memcpy(dstp, srcp, l);
dstp += l;
srcp += l;
break;
case NS_CMPRSFLGS:
@ -396,7 +423,7 @@ ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
if (len < 0)
len = srcp - src + 1;
srcp = msg + (((n & 0x3f) << 8) | (*srcp & 0xff));
if (srcp < msg || srcp >= eom) { /* Out of range. */
if (srcp < msg || srcp >= eom) { /*%< Out of range. */
__set_errno (EMSGSIZE);
return (-1);
}
@ -414,7 +441,7 @@ ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
default:
__set_errno (EMSGSIZE);
return (-1); /* flag error */
return (-1); /*%< flag error */
}
}
*dstp = '\0';
@ -423,20 +450,23 @@ ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
return (len);
}
libresolv_hidden_def (ns_name_unpack)
strong_alias (ns_name_unpack, __ns_name_unpack)
/*
* ns_name_pack(src, dst, dstsiz, dnptrs, lastdnptr)
/*%
* Pack domain name 'domain' into 'comp_dn'.
*
* return:
* Size of the compressed name, or -1.
*\li Size of the compressed name, or -1.
*
* notes:
* 'dnptrs' is an array of pointers to previous compressed names.
* dnptrs[0] is a pointer to the beginning of the message. The array
*\li 'dnptrs' is an array of pointers to previous compressed names.
*\li dnptrs[0] is a pointer to the beginning of the message. The array
* ends with NULL.
* 'lastdnptr' is a pointer to the end of the array pointed to
*\li 'lastdnptr' is a pointer to the end of the array pointed to
* by 'dnptrs'.
*
* Side effects:
* The list of pointers in dnptrs is updated for labels inserted into
*\li The list of pointers in dnptrs is updated for labels inserted into
* the message as we compress the name. If 'dnptr' is NULL, we don't
* try to compress names. If 'lastdnptr' is NULL, we don't update the
* list.
@ -458,7 +488,7 @@ ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
if ((msg = *dnptrs++) != NULL) {
for (cpp = dnptrs; *cpp != NULL; cpp++)
(void)NULL;
lpp = cpp; /* end of list to search */
lpp = cpp; /*%< end of list to search */
}
} else
msg = NULL;
@ -466,19 +496,23 @@ ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
/* make sure the domain we are about to add is legal */
l = 0;
do {
int l0;
n = *srcp;
if ((n & NS_CMPRSFLGS) != 0 && n != 0x41) {
if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
__set_errno (EMSGSIZE);
return (-1);
}
if (n == 0x41)
n = *++srcp / 8;
l += n + 1;
if ((l0 = labellen(srcp)) < 0) {
__set_errno (EINVAL);
return(-1);
}
l += l0 + 1;
if (l > MAXCDNAME) {
__set_errno (EMSGSIZE);
return (-1);
}
srcp += n + 1;
srcp += l0 + 1;
} while (n != 0);
/* from here on we need to reset compression pointer array on error */
@ -486,7 +520,7 @@ ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
do {
/* Look to see if we can use pointers. */
n = *srcp;
if (n != 0 && n != 0x41 && msg != NULL) {
if (n != 0 && msg != NULL) {
l = dn_find(srcp, msg, (const u_char * const *)dnptrs,
(const u_char * const *)lpp);
if (l >= 0) {
@ -506,15 +540,11 @@ ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
}
}
/* copy label to buffer */
if ((n & NS_CMPRSFLGS) != 0 && n != 0x41) { /* Should not happen. */
if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
/* Should not happen. */
goto cleanup;
}
if (n == 0x41) {
n = *++srcp / 8;
if (dstp + 1 >= eob)
goto cleanup;
*dstp++ = 0x41;
}
n = labellen(srcp);
if (dstp + 1 + n >= eob) {
goto cleanup;
}
@ -532,14 +562,16 @@ cleanup:
}
return (dstp - dst);
}
libresolv_hidden_def (ns_name_pack)
/*
* ns_name_uncompress(msg, eom, src, dst, dstsiz)
/*%
* Expand compressed domain name to presentation format.
*
* return:
* Number of bytes read out of `src', or -1 (with errno set).
*\li Number of bytes read out of `src', or -1 (with errno set).
*
* note:
* Root domain returns as "." not "".
*\li Root domain returns as "." not "".
*/
int
ns_name_uncompress(const u_char *msg, const u_char *eom, const u_char *src,
@ -554,19 +586,21 @@ ns_name_uncompress(const u_char *msg, const u_char *eom, const u_char *src,
return (-1);
return (n);
}
libresolv_hidden_def (ns_name_uncompress)
/*
* ns_name_compress(src, dst, dstsiz, dnptrs, lastdnptr)
/*%
* Compress a domain name into wire format, using compression pointers.
*
* return:
* Number of bytes consumed in `dst' or -1 (with errno set).
*\li Number of bytes consumed in `dst' or -1 (with errno set).
*
* notes:
* 'dnptrs' is an array of pointers to previous compressed names.
* dnptrs[0] is a pointer to the beginning of the message.
* The list ends with NULL. 'lastdnptr' is a pointer to the end of the
*\li 'dnptrs' is an array of pointers to previous compressed names.
*\li dnptrs[0] is a pointer to the beginning of the message.
*\li The list ends with NULL. 'lastdnptr' is a pointer to the end of the
* array pointed to by 'dnptrs'. Side effect is to update the list of
* pointers for labels inserted into the message as we compress the name.
* If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
*\li If 'dnptr' is NULL, we don't try to compress names. If 'lastdnptr'
* is NULL, we don't update the list.
*/
int
@ -579,8 +613,9 @@ ns_name_compress(const char *src, u_char *dst, size_t dstsiz,
return (-1);
return (ns_name_pack(tmp, dst, dstsiz, dnptrs, lastdnptr));
}
libresolv_hidden_def (ns_name_compress)
/*
/*%
* Reset dnptrs so that there are no active references to pointers at or
* after src.
*/
@ -597,28 +632,37 @@ ns_name_rollback(const u_char *src, const u_char **dnptrs,
}
}
/*
* ns_name_skip(ptrptr, eom)
/*%
* Advance *ptrptr to skip over the compressed name it points at.
*
* return:
* 0 on success, -1 (with errno set) on failure.
*\li 0 on success, -1 (with errno set) on failure.
*/
int
ns_name_skip(const u_char **ptrptr, const u_char *eom) {
ns_name_skip(const u_char **ptrptr, const u_char *eom)
{
const u_char *cp;
u_int n;
int l;
cp = *ptrptr;
while (cp < eom && (n = *cp++) != 0) {
/* Check for indirection. */
switch (n & NS_CMPRSFLGS) {
case 0: /* normal case, n == len */
case 0: /*%< normal case, n == len */
cp += n;
continue;
case NS_CMPRSFLGS: /* indirection */
case NS_TYPE_ELT: /*%< EDNS0 extended label */
if ((l = labellen(cp - 1)) < 0) {
__set_errno (EMSGSIZE);
return(-1);
}
cp += l;
continue;
case NS_CMPRSFLGS: /*%< indirection */
cp++;
break;
default: /* illegal type */
default: /*%< illegal type */
__set_errno (EMSGSIZE);
return (-1);
}
@ -631,45 +675,48 @@ ns_name_skip(const u_char **ptrptr, const u_char *eom) {
*ptrptr = cp;
return (0);
}
libresolv_hidden_def (ns_name_skip)
/* Private. */
/*
* special(ch)
/*%
* Thinking in noninternationalized USASCII (per the DNS spec),
* is this characted special ("in need of quoting") ?
*
* return:
* boolean.
*\li boolean.
*/
static int
special(int ch) {
switch (ch) {
case 0x22: /* '"' */
case 0x2E: /* '.' */
case 0x3B: /* ';' */
case 0x5C: /* '\\' */
case 0x22: /*%< '"' */
case 0x2E: /*%< '.' */
case 0x3B: /*%< ';' */
case 0x5C: /*%< '\\' */
case 0x28: /*%< '(' */
case 0x29: /*%< ')' */
/* Special modifiers in zone files. */
case 0x40: /* '@' */
case 0x24: /* '$' */
case 0x40: /*%< '@' */
case 0x24: /*%< '$' */
return (1);
default:
return (0);
}
}
/*
* printable(ch)
/*%
* Thinking in noninternationalized USASCII (per the DNS spec),
* is this character visible and not a space when printed ?
*
* return:
* boolean.
*\li boolean.
*/
static int
printable(int ch) {
return (ch > 0x20 && ch < 0x7f);
}
/*
/*%
* Thinking in noninternationalized USASCII (per the DNS spec),
* convert this character to lower case if it's upper case.
*/
@ -680,14 +727,15 @@ mklower(int ch) {
return (ch);
}
/*
* dn_find(domain, msg, dnptrs, lastdnptr)
/*%
* Search for the counted-label name in an array of compressed names.
*
* return:
* offset from msg if found, or -1.
*\li offset from msg if found, or -1.
*
* notes:
* dnptrs is the pointer to the first name on the list,
* not the pointer to the start of the message.
*\li dnptrs is the pointer to the first name on the list,
*\li not the pointer to the start of the message.
*/
static int
dn_find(const u_char *domain, const u_char *msg,
@ -715,9 +763,11 @@ dn_find(const u_char *domain, const u_char *msg,
* check for indirection
*/
switch (n & NS_CMPRSFLGS) {
case 0: /* normal case, n == len */
case 0: /*%< normal case, n == len */
n = labellen(cp - 1); /*%< XXX */
if (n != *dn++)
goto next;
for ((void)NULL; n > 0; n--)
if (mklower(*dn++) !=
mklower(*cp++))
@ -728,20 +778,197 @@ dn_find(const u_char *domain, const u_char *msg,
if (*dn)
continue;
goto next;
case NS_CMPRSFLGS: /* indirection */
case NS_CMPRSFLGS: /*%< indirection */
cp = msg + (((n & 0x3f) << 8) | *cp);
break;
default: /* illegal type */
default: /*%< illegal type */
__set_errno (EMSGSIZE);
return (-1);
}
}
next:
next: ;
sp += *sp + 1;
}
}
__set_errno (ENOENT);
return (-1);
}
static int
decode_bitstring(const unsigned char **cpp, char *dn, const char *eom)
{
const unsigned char *cp = *cpp;
char *beg = dn, tc;
int b, blen, plen, i;
if ((blen = (*cp & 0xff)) == 0)
blen = 256;
plen = (blen + 3) / 4;
plen += sizeof("\\[x/]") + (blen > 99 ? 3 : (blen > 9) ? 2 : 1);
if (dn + plen >= eom)
return(-1);
cp++;
i = SPRINTF((dn, "\\[x"));
if (i < 0)
return (-1);
dn += i;
for (b = blen; b > 7; b -= 8, cp++) {
i = SPRINTF((dn, "%02x", *cp & 0xff));
if (i < 0)
return (-1);
dn += i;
}
if (b > 4) {
tc = *cp++;
i = SPRINTF((dn, "%02x", tc & (0xff << (8 - b))));
if (i < 0)
return (-1);
dn += i;
} else if (b > 0) {
tc = *cp++;
i = SPRINTF((dn, "%1x",
((tc >> 4) & 0x0f) & (0x0f << (4 - b))));
if (i < 0)
return (-1);
dn += i;
}
i = SPRINTF((dn, "/%d]", blen));
if (i < 0)
return (-1);
dn += i;
*cpp = cp;
return(dn - beg);
}
static int
encode_bitstring(const char **bp, const char *end, unsigned char **labelp,
unsigned char ** dst, unsigned const char *eom)
{
int afterslash = 0;
const char *cp = *bp;
unsigned char *tp;
char c;
const char *beg_blen;
char *end_blen = NULL;
int value = 0, count = 0, tbcount = 0, blen = 0;
beg_blen = end_blen = NULL;
/* a bitstring must contain at least 2 characters */
if (end - cp < 2)
return(EINVAL);
/* XXX: currently, only hex strings are supported */
if (*cp++ != 'x')
return(EINVAL);
if (!isxdigit((*cp) & 0xff)) /*%< reject '\[x/BLEN]' */
return(EINVAL);
for (tp = *dst + 1; cp < end && tp < eom; cp++) {
switch((c = *cp)) {
case ']': /*%< end of the bitstring */
if (afterslash) {
if (beg_blen == NULL)
return(EINVAL);
blen = (int)strtol(beg_blen, &end_blen, 10);
if (*end_blen != ']')
return(EINVAL);
}
if (count)
*tp++ = ((value << 4) & 0xff);
cp++; /*%< skip ']' */
goto done;
case '/':
afterslash = 1;
break;
default:
if (afterslash) {
if (!isdigit(c&0xff))
return(EINVAL);
if (beg_blen == NULL) {
if (c == '0') {
/* blen never begings with 0 */
return(EINVAL);
}
beg_blen = cp;
}
} else {
if (!isxdigit(c&0xff))
return(EINVAL);
value <<= 4;
value += digitvalue[(int)c];
count += 4;
tbcount += 4;
if (tbcount > 256)
return(EINVAL);
if (count == 8) {
*tp++ = value;
count = 0;
}
}
break;
}
}
done:
if (cp >= end || tp >= eom)
return(EMSGSIZE);
/*
* bit length validation:
* If a <length> is present, the number of digits in the <bit-data>
* MUST be just sufficient to contain the number of bits specified
* by the <length>. If there are insignificant bits in a final
* hexadecimal or octal digit, they MUST be zero.
* RFC2673, Section 3.2.
*/
if (blen > 0) {
int traillen;
if (((blen + 3) & ~3) != tbcount)
return(EINVAL);
traillen = tbcount - blen; /*%< between 0 and 3 */
if (((value << (8 - traillen)) & 0xff) != 0)
return(EINVAL);
}
else
blen = tbcount;
if (blen == 256)
blen = 0;
/* encode the type and the significant bit fields */
**labelp = DNS_LABELTYPE_BITSTRING;
**dst = blen;
*bp = cp;
*dst = tp;
return(0);
}
static int
labellen(const u_char *lp)
{
int bitlen;
u_char l = *lp;
if ((l & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
/* should be avoided by the caller */
return(-1);
}
if ((l & NS_CMPRSFLGS) == NS_TYPE_ELT) {
if (l == DNS_LABELTYPE_BITSTRING) {
if ((bitlen = *(lp + 1)) == 0)
bitlen = 256;
return((bitlen + 7 ) / 8 + 1);
}
return(-1); /*%< unknwon ELT */
}
return(l);
}
/*! \file */

22
resolv/ns_netint.c
View file

@ -1,18 +1,18 @@
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM 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.
* 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.
*/
#if !defined(_LIBC) && !defined(lint)
@ -34,6 +34,7 @@ ns_get16(const u_char *src) {
return (dst);
}
libresolv_hidden_def (ns_get16)
strong_alias (ns_get16, __ns_get16)
u_long
ns_get32(const u_char *src) {
@ -43,13 +44,18 @@ ns_get32(const u_char *src) {
return (dst);
}
libresolv_hidden_def (ns_get32)
strong_alias (ns_get32, __ns_get32)
void
ns_put16(u_int src, u_char *dst) {
NS_PUT16(src, dst);
}
libresolv_hidden_def (ns_put16)
void
ns_put32(u_long src, u_char *dst) {
NS_PUT32(src, dst);
}
libresolv_hidden_def (ns_put32)
/*! \file */

94
resolv/ns_parse.c
View file

@ -1,18 +1,18 @@
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* 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 INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM 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.
* 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.
*/
#if !defined(_LIBC) && !defined(lint)
@ -41,25 +41,30 @@ static void setsection(ns_msg *msg, ns_sect sect);
/* Public. */
/* These need to be in the same order as the nres.h:ns_flag enum. */
struct _ns_flagdata _ns_flagdata[16] = {
{ 0x8000, 15 }, /* qr. */
{ 0x7800, 11 }, /* opcode. */
{ 0x0400, 10 }, /* aa. */
{ 0x0200, 9 }, /* tc. */
{ 0x0100, 8 }, /* rd. */
{ 0x0080, 7 }, /* ra. */
{ 0x0040, 6 }, /* z. */
{ 0x0020, 5 }, /* ad. */
{ 0x0010, 4 }, /* cd. */
{ 0x000f, 0 }, /* rcode. */
{ 0x0000, 0 }, /* expansion (1/6). */
{ 0x0000, 0 }, /* expansion (2/6). */
{ 0x0000, 0 }, /* expansion (3/6). */
{ 0x0000, 0 }, /* expansion (4/6). */
{ 0x0000, 0 }, /* expansion (5/6). */
{ 0x0000, 0 }, /* expansion (6/6). */
const struct _ns_flagdata _ns_flagdata[16] = {
{ 0x8000, 15 }, /*%< qr. */
{ 0x7800, 11 }, /*%< opcode. */
{ 0x0400, 10 }, /*%< aa. */
{ 0x0200, 9 }, /*%< tc. */
{ 0x0100, 8 }, /*%< rd. */
{ 0x0080, 7 }, /*%< ra. */
{ 0x0040, 6 }, /*%< z. */
{ 0x0020, 5 }, /*%< ad. */
{ 0x0010, 4 }, /*%< cd. */
{ 0x000f, 0 }, /*%< rcode. */
{ 0x0000, 0 }, /*%< expansion (1/6). */
{ 0x0000, 0 }, /*%< expansion (2/6). */
{ 0x0000, 0 }, /*%< expansion (3/6). */
{ 0x0000, 0 }, /*%< expansion (4/6). */
{ 0x0000, 0 }, /*%< expansion (5/6). */
{ 0x0000, 0 }, /*%< expansion (6/6). */
};
#undef ns_msg_getflag
int ns_msg_getflag(ns_msg handle, int flag) {
return(((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift);
}
int
ns_skiprr(const u_char *ptr, const u_char *eom, ns_sect section, int count) {
const u_char *optr = ptr;
@ -83,6 +88,7 @@ ns_skiprr(const u_char *ptr, const u_char *eom, ns_sect section, int count) {
RETERR(EMSGSIZE);
return (ptr - optr);
}
libresolv_hidden_def (ns_skiprr)
int
ns_initparse(const u_char *msg, int msglen, ns_msg *handle) {
@ -120,13 +126,16 @@ ns_initparse(const u_char *msg, int msglen, ns_msg *handle) {
setsection(handle, ns_s_max);
return (0);
}
libresolv_hidden_def (ns_initparse)
int
ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) {
int b;
int tmp;
/* Make section right. */
if (section < 0 || section >= ns_s_max)
tmp = section;
if (tmp < 0 || section >= ns_s_max)
RETERR(ENODEV);
if (section != handle->_sect)
setsection(handle, section);
@ -139,38 +148,38 @@ ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) {
if (rrnum < handle->_rrnum)
setsection(handle, section);
if (rrnum > handle->_rrnum) {
b = ns_skiprr(handle->_ptr, handle->_eom, section,
b = ns_skiprr(handle->_msg_ptr, handle->_eom, section,
rrnum - handle->_rrnum);
if (b < 0)
return (-1);
handle->_ptr += b;
handle->_msg_ptr += b;
handle->_rrnum = rrnum;
}
/* Do the parse. */
b = dn_expand(handle->_msg, handle->_eom,
handle->_ptr, rr->name, NS_MAXDNAME);
handle->_msg_ptr, rr->name, NS_MAXDNAME);
if (b < 0)
return (-1);
handle->_ptr += b;
if (handle->_ptr + NS_INT16SZ + NS_INT16SZ > handle->_eom)
handle->_msg_ptr += b;
if (handle->_msg_ptr + NS_INT16SZ + NS_INT16SZ > handle->_eom)
RETERR(EMSGSIZE);
NS_GET16(rr->type, handle->_ptr);
NS_GET16(rr->rr_class, handle->_ptr);
NS_GET16(rr->type, handle->_msg_ptr);
NS_GET16(rr->rr_class, handle->_msg_ptr);
if (section == ns_s_qd) {
rr->ttl = 0;
rr->rdlength = 0;
rr->rdata = NULL;
} else {
if (handle->_ptr + NS_INT32SZ + NS_INT16SZ > handle->_eom)
if (handle->_msg_ptr + NS_INT32SZ + NS_INT16SZ > handle->_eom)
RETERR(EMSGSIZE);
NS_GET32(rr->ttl, handle->_ptr);
NS_GET16(rr->rdlength, handle->_ptr);
if (handle->_ptr + rr->rdlength > handle->_eom)
NS_GET32(rr->ttl, handle->_msg_ptr);
NS_GET16(rr->rdlength, handle->_msg_ptr);
if (handle->_msg_ptr + rr->rdlength > handle->_eom)
RETERR(EMSGSIZE);
rr->rdata = handle->_ptr;
handle->_ptr += rr->rdlength;
rr->rdata = handle->_msg_ptr;
handle->_msg_ptr += rr->rdlength;
}
if (++handle->_rrnum > handle->_counts[(int)section])
setsection(handle, (ns_sect)((int)section + 1));
@ -178,6 +187,7 @@ ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) {
/* All done. */
return (0);
}
libresolv_hidden_def (ns_parserr)
/* Private. */
@ -186,9 +196,11 @@ setsection(ns_msg *msg, ns_sect sect) {
msg->_sect = sect;
if (sect == ns_s_max) {
msg->_rrnum = -1;
msg->_ptr = NULL;
msg->_msg_ptr = NULL;
} else {
msg->_rrnum = 0;
msg->_ptr = msg->_sections[(int)sect];
msg->_msg_ptr = msg->_sections[(int)sect];
}
}
/*! \file */

203
resolv/ns_print.c
View file

@ -1,4 +1,5 @@
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996-1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
@ -34,11 +35,7 @@ static const char rcsid[] = "$BINDId: ns_print.c,v 8.18 2000/02/29 05:48:12 vixi
#include <string.h>
#include <ctype.h>
#ifdef SPRINTF_CHAR
# define SPRINTF(x) strlen(sprintf/**/x)
#else
# define SPRINTF(x) ((size_t)sprintf x)
#endif
#define SPRINTF(x) ((size_t)sprintf x)
/* Forward. */
@ -54,11 +51,7 @@ static int addstr(const char *src, size_t len,
static int addtab(size_t len, size_t target, int spaced,
char **buf, size_t *buflen);
/* Proto. */
#ifndef _LIBC
u_int16_t dst_s_dns_key_id(const u_char *, const int);
#endif
static u_int16_t dst_s_dns_key_id(const u_char *, const int);
/* Macros. */
@ -70,12 +63,11 @@ u_int16_t dst_s_dns_key_id(const u_char *, const int);
/* Public. */
/*
* int
* ns_sprintrr(handle, rr, name_ctx, origin, buf, buflen)
/*%
* Convert an RR to presentation format.
*
* return:
* Number of characters written to buf, or -1 (check errno).
*\li Number of characters written to buf, or -1 (check errno).
*/
int
ns_sprintrr(const ns_msg *handle, const ns_rr *rr,
@ -90,14 +82,13 @@ ns_sprintrr(const ns_msg *handle, const ns_rr *rr,
name_ctx, origin, buf, buflen);
return (n);
}
libresolv_hidden_def (ns_sprintrr)
/*
* int
* ns_sprintrrf(msg, msglen, name, class, type, ttl, rdata, rdlen,
* name_ctx, origin, buf, buflen)
/*%
* Convert the fields of an RR into presentation format.
*
* return:
* Number of characters written to buf, or -1 (check errno).
*\li Number of characters written to buf, or -1 (check errno).
*/
int
ns_sprintrrf(const u_char *msg, size_t msglen,
@ -122,14 +113,17 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
T(addstr("\t\t\t", 3, &buf, &buflen));
} else {
len = prune_origin(name, origin);
if (len == 0) {
if (*name == '\0') {
goto root;
} else if (len == 0) {
T(addstr("@\t\t\t", 4, &buf, &buflen));
} else {
T(addstr(name, len, &buf, &buflen));
/* Origin not used or not root, and no trailing dot? */
if (((origin == NULL || origin[0] == '\0') ||
(origin[0] != '.' && origin[1] != '\0' &&
name[len] == '\0')) && name[len - 1] != '.') {
(origin[0] != '.' && origin[1] != '\0' &&
name[len] == '\0')) && name[len - 1] != '.') {
root:
T(addstr(".", 1, &buf, &buflen));
len++;
}
@ -151,7 +145,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
*/
switch (type) {
case ns_t_a:
if (rdlen != NS_INADDRSZ)
if (rdlen != (size_t)NS_INADDRSZ)
goto formerr;
(void) inet_ntop(AF_INET, rdata, buf, buflen);
addlen(strlen(buf), &buf, &buflen);
@ -163,6 +157,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
case ns_t_mr:
case ns_t_ns:
case ns_t_ptr:
case ns_t_dname:
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
break;
@ -254,7 +249,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
case ns_t_rt: {
u_int t;
if (rdlen < NS_INT16SZ)
if (rdlen < (size_t)NS_INT16SZ)
goto formerr;
/* Priority. */
@ -272,7 +267,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
case ns_t_px: {
u_int t;
if (rdlen < NS_INT16SZ)
if (rdlen < (size_t)NS_INT16SZ)
goto formerr;
/* Priority. */
@ -310,9 +305,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
break;
case ns_t_nsap: {
/* 2*255 for hex digits, 128 for '.' and '\0', 2 for
0x if inet_nsap_ntoa starts using it. */
char t[255*2 + 128 + 2];
char t[2+255*3];
(void) inet_nsap_ntoa(rdlen, rdata, t);
T(addstr(t, strlen(t), &buf, &buflen));
@ -320,7 +313,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
}
case ns_t_aaaa:
if (rdlen != NS_IN6ADDRSZ)
if (rdlen != (size_t)NS_IN6ADDRSZ)
goto formerr;
(void) inet_ntop(AF_INET6, rdata, buf, buflen);
addlen(strlen(buf), &buf, &buflen);
@ -339,7 +332,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
u_int order, preference;
char t[50];
if (rdlen < 2*NS_INT16SZ)
if (rdlen < 2U*NS_INT16SZ)
goto formerr;
/* Order, Precedence. */
@ -380,7 +373,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
u_int priority, weight, port;
char t[50];
if (rdlen < NS_INT16SZ*3)
if (rdlen < 3U*NS_INT16SZ)
goto formerr;
/* Priority, Weight, Port. */
@ -409,7 +402,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
case ns_t_wks: {
int n, lcnt;
if (rdlen < NS_INT32SZ + 1)
if (rdlen < 1U + NS_INT32SZ)
goto formerr;
/* Address. */
@ -448,13 +441,12 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
}
case ns_t_key: {
#ifndef _LIBC
char base64_key[NS_MD5RSA_MAX_BASE64];
u_int keyflags, protocol, algorithm, key_id;
const char *leader;
int n;
if (rdlen < NS_INT16SZ + NS_INT8SZ + NS_INT8SZ)
if (rdlen < 0U + NS_INT16SZ + NS_INT8SZ + NS_INT8SZ)
goto formerr;
/* Key flags, Protocol, Algorithm. */
@ -486,20 +478,18 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
T(addstr(" )", 2, &buf, &buflen));
n = SPRINTF((tmp, " ; key_tag= %u", key_id));
T(addstr(tmp, n, &buf, &buflen));
#endif /* !_LIBC */
break;
}
case ns_t_sig: {
#ifndef _LIBC
char base64_key[NS_MD5RSA_MAX_BASE64];
u_int type, algorithm, labels, footprint;
const char *leader;
u_long t;
int n;
if (rdlen < 22)
if (rdlen < 22U)
goto formerr;
/* Type covered, Algorithm, Label count, Original TTL. */
@ -549,7 +539,6 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
}
if (len > 15)
T(addstr(" )", 2, &buf, &buflen));
#endif /* !_LIBC */
break;
}
@ -571,8 +560,10 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
case ns_t_cert: {
u_int c_type, key_tag, alg;
int n, siz;
char base64_cert[8192], *leader, tmp[40];
int n;
unsigned int siz;
char base64_cert[8192], tmp[40];
const char *leader;
c_type = ns_get16(rdata); rdata += NS_INT16SZ;
key_tag = ns_get16(rdata); rdata += NS_INT16SZ;
@ -582,7 +573,7 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
T(addstr(tmp, len, &buf, &buflen));
siz = (edata-rdata)*4/3 + 4; /* "+4" accounts for trailing \0 */
if (siz > sizeof(base64_cert) * 3/4) {
char *str = "record too long to print";
const char *str = "record too long to print";
T(addstr(str, strlen(str), &buf, &buflen));
}
else {
@ -610,16 +601,47 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
break;
}
case ns_t_tkey: {
/* KJD - need to complete this */
u_long t;
int mode, err, keysize;
/* Algorithm name. */
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
T(addstr(" ", 1, &buf, &buflen));
/* Inception. */
t = ns_get32(rdata); rdata += NS_INT32SZ;
len = SPRINTF((tmp, "%s ", p_secstodate(t)));
T(addstr(tmp, len, &buf, &buflen));
/* Experation. */
t = ns_get32(rdata); rdata += NS_INT32SZ;
len = SPRINTF((tmp, "%s ", p_secstodate(t)));
T(addstr(tmp, len, &buf, &buflen));
/* Mode , Error, Key Size. */
/* Priority, Weight, Port. */
mode = ns_get16(rdata); rdata += NS_INT16SZ;
err = ns_get16(rdata); rdata += NS_INT16SZ;
keysize = ns_get16(rdata); rdata += NS_INT16SZ;
len = SPRINTF((tmp, "%u %u %u ", mode, err, keysize));
T(addstr(tmp, len, &buf, &buflen));
/* XXX need to dump key, print otherdata length & other data */
break;
}
case ns_t_tsig: {
/* BEW - need to complete this */
int n;
T(len = addname(msg, msglen, &rdata, origin, &buf, &buflen));
T(addstr(" ", 1, &buf, &buflen));
rdata += 8; /* time */
rdata += 8; /*%< time */
n = ns_get16(rdata); rdata += INT16SZ;
rdata += n; /* sig */
n = ns_get16(rdata); rdata += INT16SZ; /* original id */
rdata += n; /*%< sig */
n = ns_get16(rdata); rdata += INT16SZ; /*%< original id */
sprintf(buf, "%d", ns_get16(rdata));
rdata += INT16SZ;
addlen(strlen(buf), &buf, &buflen);
@ -677,7 +699,8 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
int n, m;
char *p;
len = SPRINTF((tmp, "\\#(\t\t; %s", comment));
len = SPRINTF((tmp, "\\# %u%s\t; %s", (unsigned)(edata - rdata),
rdlen != 0U ? " (" : "", comment));
T(addstr(tmp, len, &buf, &buflen));
while (rdata < edata) {
p = tmp;
@ -703,10 +726,11 @@ ns_sprintrrf(const u_char *msg, size_t msglen,
return (buf - obuf);
}
}
libresolv_hidden_def (ns_sprintrrf)
/* Private. */
/*
/*%
* size_t
* prune_origin(name, origin)
* Find out if the name is at or under the current origin.
@ -739,7 +763,7 @@ prune_origin(const char *name, const char *origin) {
return (name - oname);
}
/*
/*%
* int
* charstr(rdata, edata, buf, buflen)
* Format a <character-string> into the presentation buffer.
@ -795,9 +819,11 @@ addname(const u_char *msg, size_t msglen,
n = dn_expand(msg, msg + msglen, *pp, *buf, *buflen);
if (n < 0)
goto enospc; /* Guess. */
goto enospc; /*%< Guess. */
newlen = prune_origin(*buf, origin);
if (newlen == 0) {
if (**buf == '\0') {
goto root;
} else if (newlen == 0U) {
/* Use "@" instead of name. */
if (newlen + 2 > *buflen)
goto enospc; /* No room for "@\0". */
@ -808,6 +834,7 @@ addname(const u_char *msg, size_t msglen,
(origin[0] != '.' && origin[1] != '\0' &&
(*buf)[newlen] == '\0')) && (*buf)[newlen - 1] != '.') {
/* No trailing dot. */
root:
if (newlen + 2 > *buflen)
goto enospc; /* No room for ".\0". */
(*buf)[newlen++] = '.';
@ -864,3 +891,81 @@ addtab(size_t len, size_t target, int spaced, char **buf, size_t *buflen) {
}
return (spaced);
}
/* DST algorithm codes */
#define KEY_RSA 1
#define KEY_HMAC_MD5 157
/*%
* calculates a checksum used in dst for an id.
* takes an array of bytes and a length.
* returns a 16 bit checksum.
*/
static u_int16_t
dst_s_id_calc(const u_char *key, const int keysize)
{
u_int32_t ac;
const u_char *kp = key;
int size = keysize;
if (!key || (keysize <= 0))
return (0xffffU);
for (ac = 0; size > 1; size -= 2, kp += 2)
ac += ((*kp) << 8) + *(kp + 1);
if (size > 0)
ac += ((*kp) << 8);
ac += (ac >> 16) & 0xffff;
return (ac & 0xffff);
}
/*%
* dst_s_get_int16
* This routine extracts a 16 bit integer from a two byte character
* string. The character string is assumed to be in network byte
* order and may be unaligned. The number returned is in host order.
* Parameter
* buf A two byte character string.
* Return
* The converted integer value.
*/
static u_int16_t
dst_s_get_int16(const u_char *buf)
{
register u_int16_t a = 0;
a = ((u_int16_t)(buf[0] << 8)) | ((u_int16_t)(buf[1]));
return (a);
}
/*%
* dst_s_dns_key_id() Function to calculate DNSSEC footprint from KEY record
* rdata
* Input:
* dns_key_rdata: the raw data in wire format
* rdata_len: the size of the input data
* Output:
* the key footprint/id calculated from the key data
*/
static u_int16_t
dst_s_dns_key_id(const u_char *dns_key_rdata, const int rdata_len)
{
if (!dns_key_rdata)
return 0;
/* compute id */
if (dns_key_rdata[3] == KEY_RSA) /*%< Algorithm RSA */
return dst_s_get_int16((const u_char *)
&dns_key_rdata[rdata_len - 3]);
else if (dns_key_rdata[3] == KEY_HMAC_MD5)
/* compatibility */
return 0;
else
/* compute a checksum on the key part of the key rr */
return dst_s_id_calc(dns_key_rdata, rdata_len);
}
/*! \file */

65
resolv/ns_samedomain.c
View file

@ -1,4 +1,5 @@
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1995,1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
@ -24,21 +25,22 @@ static const char rcsid[] = "$BINDId: ns_samedomain.c,v 8.9 1999/10/15 21:06:51
#include <errno.h>
#include <string.h>
/*
* int
* ns_samedomain(a, b)
/*%
* Check whether a name belongs to a domain.
*
* Inputs:
* a - the domain whose ancestory is being verified
* b - the potential ancestor we're checking against
*\li a - the domain whose ancestory is being verified
*\li b - the potential ancestor we're checking against
*
* Return:
* boolean - is a at or below b?
*\li boolean - is a at or below b?
*
* Notes:
* Trailing dots are first removed from name and domain.
*\li Trailing dots are first removed from name and domain.
* Always compare complete subdomains, not only whether the
* domain name is the trailing string of the given name.
*
* "host.foobar.top" lies in "foobar.top" and in "top" and in ""
*\li "host.foobar.top" lies in "foobar.top" and in "top" and in ""
* but NOT in "bar.top"
*/
@ -52,7 +54,7 @@ ns_samedomain(const char *a, const char *b) {
lb = strlen(b);
/* Ignore a trailing label separator (i.e. an unescaped dot) in 'a'. */
if (la != 0 && a[la - 1] == '.') {
if (la != 0U && a[la - 1] == '.') {
escaped = 0;
/* Note this loop doesn't get executed if la==1. */
for (i = la - 2; i >= 0; i--)
@ -68,7 +70,7 @@ ns_samedomain(const char *a, const char *b) {
}
/* Ignore a trailing label separator (i.e. an unescaped dot) in 'b'. */
if (lb != 0 && b[lb - 1] == '.') {
if (lb != 0U && b[lb - 1] == '.') {
escaped = 0;
/* note this loop doesn't get executed if lb==1 */
for (i = lb - 2; i >= 0; i--)
@ -84,7 +86,7 @@ ns_samedomain(const char *a, const char *b) {
}
/* lb == 0 means 'b' is the root domain, so 'a' must be in 'b'. */
if (lb == 0)
if (lb == 0U)
return (1);
/* 'b' longer than 'a' means 'a' can't be in 'b'. */
@ -121,24 +123,23 @@ ns_samedomain(const char *a, const char *b) {
*/
escaped = 0;
for (i = diff - 2; i >= 0; i--)
if (a[i] == '\\')
if (a[i] == '\\') {
if (escaped)
escaped = 0;
else
escaped = 1;
else
} else
break;
if (escaped)
return (0);
/* Now compare aligned trailing substring. */
cp = a + diff;
return (strncasecmp(cp, b, lb) == 0);
}
libresolv_hidden_def (ns_samedomain)
/*
* int
* ns_subdomain(a, b)
/*%
* is "a" a subdomain of "b"?
*/
int
@ -146,30 +147,31 @@ ns_subdomain(const char *a, const char *b) {
return (ns_samename(a, b) != 1 && ns_samedomain(a, b));
}
/*
* int
* ns_makecanon(src, dst, dstsize)
/*%
* make a canonical copy of domain name "src"
*
* notes:
* \code
* foo -> foo.
* foo. -> foo.
* foo.. -> foo.
* foo\. -> foo\..
* foo\\. -> foo\\.
* \endcode
*/
int
ns_makecanon(const char *src, char *dst, size_t dstsize) {
size_t n = strlen(src);
if (n + sizeof "." > dstsize) {
if (n + sizeof "." > dstsize) { /*%< Note: sizeof == 2 */
__set_errno (EMSGSIZE);
return (-1);
}
strcpy(dst, src);
while (n > 0 && dst[n - 1] == '.') /* Ends in "." */
if (n > 1 && dst[n - 2] == '\\' && /* Ends in "\." */
(n < 2 || dst[n - 3] != '\\')) /* But not "\\." */
while (n >= 1U && dst[n - 1] == '.') /*%< Ends in "." */
if (n >= 2U && dst[n - 2] == '\\' && /*%< Ends in "\." */
(n < 3U || dst[n - 3] != '\\')) /*%< But not "\\." */
break;
else
dst[--n] = '\0';
@ -177,15 +179,15 @@ ns_makecanon(const char *src, char *dst, size_t dstsize) {
dst[n] = '\0';
return (0);
}
libresolv_hidden_def (ns_makecanon)
/*
* int
* ns_samename(a, b)
/*%
* determine whether domain name "a" is the same as domain name "b"
*
* return:
* -1 on error
* 0 if names differ
* 1 if names are the same
*\li -1 on error
*\li 0 if names differ
*\li 1 if names are the same
*/
int
@ -200,3 +202,6 @@ ns_samename(const char *a, const char *b) {
else
return (0);
}
libresolv_hidden_def (ns_samename)
/*! \file */

9
resolv/ns_ttl.c
View file

@ -1,4 +1,5 @@
/*
* Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996,1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
@ -88,8 +89,8 @@ ns_format_ttl(u_long src, char *dst, size_t dstlen) {
return (dst - odst);
}
libresolv_hidden_def (ns_format_ttl)
#ifndef SHARED
// Seems not to be needed. It's not exported from the DSO. Some libresolv.a
// might depend on it so we let it in.
int
@ -132,7 +133,8 @@ ns_parse_ttl(const char *src, u_long *dst) {
goto einval;
else
ttl += tmp;
}
} else if (!dirty)
goto einval;
*dst = ttl;
return (0);
@ -140,7 +142,6 @@ ns_parse_ttl(const char *src, u_long *dst) {
__set_errno (EINVAL);
return (-1);
}
#endif
/* Private. */
@ -157,3 +158,5 @@ fmt1(int t, char s, char **buf, size_t *buflen) {
*buflen -= len;
return (0);
}
/*! \file */

4
resolv/nss_dns/dns-canon.c
View file

@ -134,14 +134,14 @@ _nss_dns_getcanonname_r (const char *name, char *buffer, size_t buflen,
if (type != ns_t_cname)
goto unavail;
if (ns_get16 (ptr) != ns_c_in)
if (__ns_get16 (ptr) != ns_c_in)
goto unavail;
/* Also skip over the TTL. */
ptr += sizeof (uint16_t) + sizeof (uint32_t);
/* Skip over the data length and data. */
ptr += sizeof (uint16_t) + ns_get16 (ptr);
ptr += sizeof (uint16_t) + __ns_get16 (ptr);
}
}
}

16
resolv/nss_dns/dns-host.c
View file

@ -698,13 +698,13 @@ getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
continue;
}
type = ns_get16 (cp);
type = __ns_get16 (cp);
cp += INT16SZ; /* type */
class = ns_get16 (cp);
class = __ns_get16 (cp);
cp += INT16SZ; /* class */
ttl = ns_get32 (cp);
ttl = __ns_get32 (cp);
cp += INT32SZ; /* TTL */
n = ns_get16 (cp);
n = __ns_get16 (cp);
cp += INT16SZ; /* len */
if (__builtin_expect (class != C_IN, 0))
{
@ -1032,13 +1032,13 @@ gaih_getanswer_slice (const querybuf *answer, int anslen, const char *qname,
continue;
}
int type = ns_get16 (cp);
int type = __ns_get16 (cp);
cp += INT16SZ; /* type */
int class = ns_get16 (cp);
int class = __ns_get16 (cp);
cp += INT16SZ; /* class */
int32_t ttl = ns_get32 (cp);
int32_t ttl = __ns_get32 (cp);
cp += INT32SZ; /* TTL */
n = ns_get16 (cp);
n = __ns_get16 (cp);
cp += INT16SZ; /* len */
if (class != C_IN)

2
resolv/res_debug.c
View file

@ -1024,6 +1024,7 @@ dn_count_labels(const char *name) {
count++;
return (count);
}
libresolv_hidden_def (__dn_count_labels)
/*
@ -1051,3 +1052,4 @@ p_secstodate (u_long secs) {
time->tm_hour, time->tm_min, time->tm_sec);
return (output);
}
libresolv_hidden_def (__p_secstodate)