From 4f5791ebd03eaec1c7da0865a383175b05102712 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 5 May 2024 19:47:29 +0200 Subject: Adding upstream version 2:4.17.12+dfsg. Signed-off-by: Daniel Baumann --- lib/addns/dns.h | 367 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 367 insertions(+) create mode 100644 lib/addns/dns.h (limited to 'lib/addns/dns.h') diff --git a/lib/addns/dns.h b/lib/addns/dns.h new file mode 100644 index 0000000..de1897b --- /dev/null +++ b/lib/addns/dns.h @@ -0,0 +1,367 @@ +/* + Linux DNS client library implementation + + Copyright (C) 2006 Krishna Ganugapati + Copyright (C) 2006 Gerald Carter + + ** NOTE! The following LGPL license applies to the libaddns + ** library. This does NOT imply that all of Samba is released + ** under the LGPL + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, see . +*/ + +#ifndef _DNS_H +#define _DNS_H + +#include "../replace/replace.h" +#include "system/network.h" +#include "system/kerberos.h" +#include "system/gssapi.h" + +/* make sure we have included the correct config.h */ +#ifndef NO_CONFIG_H /* for some tests */ +#ifndef CONFIG_H_IS_FROM_SAMBA +#error "make sure you have removed all config.h files from standalone builds!" +#error "the included config.h isn't from samba!" +#endif +#endif /* NO_CONFIG_H */ + +#include +#include +#include + +#include + +#include "dnserr.h" + + +#define DNS_TCP 1 +#define DNS_UDP 2 + +#define DNS_OPCODE_UPDATE 1 + +/* DNS Class Types */ + +#define DNS_CLASS_IN 1 +#define DNS_CLASS_ANY 255 +#define DNS_CLASS_NONE 254 + +/* DNS RR Types */ + +#define DNS_RR_A 1 + +#define DNS_TCP_PORT 53 +#define DNS_UDP_PORT 53 + +#define QTYPE_A 1 +#define QTYPE_NS 2 +#define QTYPE_MD 3 +#define QTYPE_CNAME 5 +#define QTYPE_SOA 6 +#define QTYPE_AAAA 28 +#define QTYPE_ANY 255 +#define QTYPE_TKEY 249 +#define QTYPE_TSIG 250 + +/* +MF 4 a mail forwarder (Obsolete - use MX) +CNAME 5 the canonical name for an alias +SOA 6 marks the start of a zone of authority +MB 7 a mailbox domain name (EXPERIMENTAL) +MG 8 a mail group member (EXPERIMENTAL) +MR 9 a mail rename domain name (EXPERIMENTAL) +NULL 10 a null RR (EXPERIMENTAL) +WKS 11 a well known service description +PTR 12 a domain name pointer +HINFO 13 host information +MINFO 14 mailbox or mail list information +MX 15 mail exchange +TXT 16 text strings +*/ + +#define QR_QUERY 0x0000 +#define QR_RESPONSE 0x0001 + +#define OPCODE_QUERY 0x00 +#define OPCODE_IQUERY 0x01 +#define OPCODE_STATUS 0x02 + +#define AA 1 + +#define RECURSION_DESIRED 0x01 + +#define RCODE_NOERROR 0 +#define RCODE_FORMATERROR 1 +#define RCODE_SERVER_FAILURE 2 +#define RCODE_NAME_ERROR 3 +#define RCODE_NOTIMPLEMENTED 4 +#define RCODE_REFUSED 5 + +#define SENDBUFFER_SIZE 65536 +#define RECVBUFFER_SIZE 65536 + +/* + * TKEY Modes from rfc2930 + */ + +#define DNS_TKEY_MODE_SERVER 1 +#define DNS_TKEY_MODE_DH 2 +#define DNS_TKEY_MODE_GSSAPI 3 +#define DNS_TKEY_MODE_RESOLVER 4 +#define DNS_TKEY_MODE_DELETE 5 + + +#define DNS_ONE_DAY_IN_SECS 86400 +#define DNS_TEN_HOURS_IN_SECS 36000 + +#define SOCKET_ERROR -1 +#define INVALID_SOCKET -1 + +#define DNS_NO_ERROR 0 +#define DNS_FORMAT_ERROR 1 +#define DNS_SERVER_FAILURE 2 +#define DNS_NAME_ERROR 3 +#define DNS_NOT_IMPLEMENTED 4 +#define DNS_REFUSED 5 + +typedef long HANDLE; + +enum dns_ServerType { DNS_SRV_ANY, DNS_SRV_WIN2000, DNS_SRV_WIN2003 }; + +struct dns_domain_label { + struct dns_domain_label *next; + char *label; + size_t len; +}; + +struct dns_domain_name { + struct dns_domain_label *pLabelList; +}; + +struct dns_question { + struct dns_domain_name *name; + uint16_t q_type; + uint16_t q_class; +}; + +/* + * Before changing the definition of dns_zone, look + * dns_marshall_update_request(), we rely on this being the same as + * dns_question right now. + */ + +struct dns_zone { + struct dns_domain_name *name; + uint16_t z_type; + uint16_t z_class; +}; + +struct dns_rrec { + struct dns_domain_name *name; + uint16_t type; + uint16_t r_class; + uint32_t ttl; + uint16_t data_length; + uint8_t *data; +}; + +struct dns_tkey_record { + struct dns_domain_name *algorithm; + time_t inception; + time_t expiration; + uint16_t mode; + uint16_t error; + uint16_t key_length; + uint8_t *key; +}; + +struct dns_request { + uint16_t id; + uint16_t flags; + uint16_t num_questions; + uint16_t num_answers; + uint16_t num_auths; + uint16_t num_additionals; + struct dns_question **questions; + struct dns_rrec **answers; + struct dns_rrec **auths; + struct dns_rrec **additionals; +}; + +/* + * Before changing the definition of dns_update_request, look + * dns_marshall_update_request(), we rely on this being the same as + * dns_request right now. + */ + +struct dns_update_request { + uint16_t id; + uint16_t flags; + uint16_t num_zones; + uint16_t num_preqs; + uint16_t num_updates; + uint16_t num_additionals; + struct dns_zone **zones; + struct dns_rrec **preqs; + struct dns_rrec **updates; + struct dns_rrec **additionals; +}; + +struct dns_connection { + int32_t hType; + int s; + struct sockaddr_storage RecvAddr; +}; + +struct dns_buffer { + uint8_t *data; + size_t size; + size_t offset; + DNS_ERROR error; +}; + +/* from dnsutils.c */ + +DNS_ERROR dns_domain_name_from_string( TALLOC_CTX *mem_ctx, + const char *pszDomainName, + struct dns_domain_name **presult ); +char *dns_generate_keyname( TALLOC_CTX *mem_ctx ); + +/* from dnsrecord.c */ + +DNS_ERROR dns_create_query( TALLOC_CTX *mem_ctx, const char *name, + uint16_t q_type, uint16_t q_class, + struct dns_request **preq ); +DNS_ERROR dns_create_update( TALLOC_CTX *mem_ctx, const char *name, + struct dns_update_request **preq ); +DNS_ERROR dns_create_probe(TALLOC_CTX *mem_ctx, const char *zone, + const char *host, int num_ips, + const struct sockaddr_storage *sslist, + struct dns_update_request **preq); +DNS_ERROR dns_create_rrec(TALLOC_CTX *mem_ctx, const char *name, + uint16_t type, uint16_t r_class, uint32_t ttl, + uint16_t data_length, uint8_t *data, + struct dns_rrec **prec); +DNS_ERROR dns_add_rrec(TALLOC_CTX *mem_ctx, struct dns_rrec *rec, + uint16_t *num_records, struct dns_rrec ***records); +DNS_ERROR dns_create_tkey_record(TALLOC_CTX *mem_ctx, const char *keyname, + const char *algorithm_name, time_t inception, + time_t expiration, uint16_t mode, uint16_t error, + uint16_t key_length, const uint8_t *key, + struct dns_rrec **prec); +DNS_ERROR dns_create_name_in_use_record(TALLOC_CTX *mem_ctx, + const char *name, + const struct sockaddr_storage *ip, + struct dns_rrec **prec); +DNS_ERROR dns_create_delete_record(TALLOC_CTX *mem_ctx, const char *name, + uint16_t type, uint16_t r_class, + struct dns_rrec **prec); +DNS_ERROR dns_create_name_not_in_use_record(TALLOC_CTX *mem_ctx, + const char *name, uint32_t type, + struct dns_rrec **prec); +DNS_ERROR dns_create_a_record(TALLOC_CTX *mem_ctx, const char *host, + uint32_t ttl, const struct sockaddr_storage *pss, + struct dns_rrec **prec); +DNS_ERROR dns_create_aaaa_record(TALLOC_CTX *mem_ctx, const char *host, + uint32_t ttl, const struct sockaddr_storage *pss, + struct dns_rrec **prec); +DNS_ERROR dns_unmarshall_tkey_record(TALLOC_CTX *mem_ctx, struct dns_rrec *rec, + struct dns_tkey_record **ptkey); +DNS_ERROR dns_create_tsig_record(TALLOC_CTX *mem_ctx, const char *keyname, + const char *algorithm_name, + time_t time_signed, uint16_t fudge, + uint16_t mac_length, const uint8_t *mac, + uint16_t original_id, uint16_t error, + struct dns_rrec **prec); +DNS_ERROR dns_add_rrec(TALLOC_CTX *mem_ctx, struct dns_rrec *rec, + uint16_t *num_records, struct dns_rrec ***records); +DNS_ERROR dns_create_update_request(TALLOC_CTX *mem_ctx, + const char *domainname, + const char *hostname, + const struct sockaddr_storage *ip_addr, + size_t num_adds, + struct dns_update_request **preq); + +/* from dnssock.c */ + +DNS_ERROR dns_open_connection( const char *nameserver, int32_t dwType, + TALLOC_CTX *mem_ctx, + struct dns_connection **conn ); +DNS_ERROR dns_send(struct dns_connection *conn, const struct dns_buffer *buf); +DNS_ERROR dns_receive(TALLOC_CTX *mem_ctx, struct dns_connection *conn, + struct dns_buffer **presult); +DNS_ERROR dns_transaction(TALLOC_CTX *mem_ctx, struct dns_connection *conn, + const struct dns_request *req, + struct dns_request **resp); +DNS_ERROR dns_update_transaction(TALLOC_CTX *mem_ctx, + struct dns_connection *conn, + struct dns_update_request *up_req, + struct dns_update_request **up_resp); + +/* from dnsmarshall.c */ + +struct dns_buffer *dns_create_buffer(TALLOC_CTX *mem_ctx); +void dns_marshall_buffer(struct dns_buffer *buf, const uint8_t *data, + size_t len); +void dns_marshall_uint16(struct dns_buffer *buf, uint16_t val); +void dns_marshall_uint32(struct dns_buffer *buf, uint32_t val); +void dns_unmarshall_buffer(struct dns_buffer *buf, uint8_t *data, + size_t len); +void dns_unmarshall_uint16(struct dns_buffer *buf, uint16_t *val); +void dns_unmarshall_uint32(struct dns_buffer *buf, uint32_t *val); +void dns_unmarshall_domain_name(TALLOC_CTX *mem_ctx, + struct dns_buffer *buf, + struct dns_domain_name **pname); +void dns_marshall_domain_name(struct dns_buffer *buf, + const struct dns_domain_name *name); +void dns_unmarshall_domain_name(TALLOC_CTX *mem_ctx, + struct dns_buffer *buf, + struct dns_domain_name **pname); +DNS_ERROR dns_marshall_request(TALLOC_CTX *mem_ctx, + const struct dns_request *req, + struct dns_buffer **pbuf); +DNS_ERROR dns_unmarshall_request(TALLOC_CTX *mem_ctx, + struct dns_buffer *buf, + struct dns_request **preq); +DNS_ERROR dns_marshall_update_request(TALLOC_CTX *mem_ctx, + struct dns_update_request *update, + struct dns_buffer **pbuf); +DNS_ERROR dns_unmarshall_update_request(TALLOC_CTX *mem_ctx, + struct dns_buffer *buf, + struct dns_update_request **pupreq); +struct dns_request *dns_update2request(struct dns_update_request *update); +struct dns_update_request *dns_request2update(struct dns_request *request); +uint16_t dns_response_code(uint16_t flags); +const char *dns_errstr(DNS_ERROR err); + +/* from dnsgss.c */ + +#ifdef HAVE_GSSAPI + +void display_status( const char *msg, OM_uint32 maj_stat, OM_uint32 min_stat ); +DNS_ERROR dns_negotiate_sec_ctx( const char *target_realm, + const char *servername, + const char *keyname, + gss_ctx_id_t *gss_ctx, + enum dns_ServerType srv_type ); +DNS_ERROR dns_sign_update(struct dns_update_request *req, + gss_ctx_id_t gss_ctx, + const char *keyname, + const char *algorithmname, + time_t time_signed, uint16_t fudge); + +#endif /* HAVE_GSSAPI */ + +#endif /* _DNS_H */ -- cgit v1.2.3