lib/addns: move DNS client library to the main directory.

Guenther

1 files changed, 540 insertions, 0 deletions

diff --git a/lib/addns/dns.h b/lib/addns/dns.h
new file mode 100644
index 00000000000..29f1ed3e997
--- /dev/null
+++ b/lib/addns/dns.h
@@ -0,0 +1,540 @@
+/*
+  Linux DNS client library implementation
+
+  Copyright (C) 2006 Krishna Ganugapati <krishnag@centeris.com>
+  Copyright (C) 2006 Gerald Carter <jerry@samba.org>
+
+     ** 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 <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _DNS_H
+#define _DNS_H
+
+#include "../replace/replace.h"
+#include "system/network.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 <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <time.h>
+#include <string.h>
+#include <errno.h>
+#include <netdb.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdarg.h>
+
+#ifdef HAVE_UUID_UUID_H
+#include <uuid/uuid.h>
+#endif
+
+#ifdef HAVE_KRB5_H
+#include <krb5.h>
+#endif
+
+#ifdef HAVE_INTTYPES_H
+#include <inttypes.h>
+
+#ifndef int16
+#define int16 int16_t
+#endif
+
+#ifndef uint16
+#define uint16 uint16_t
+#endif
+
+#ifndef int32
+#define int32 int32_t
+#endif
+
+#ifndef uint32
+#define uint32 uint32_t
+#endif
+#endif
+
+#ifdef HAVE_KRB5_H
+#include <krb5.h>
+#endif
+
+#if HAVE_GSSAPI_GSSAPI_H
+#include <gssapi/gssapi.h>
+#elif HAVE_GSSAPI_GSSAPI_GENERIC_H
+#include <gssapi/gssapi_generic.h>
+#elif HAVE_GSSAPI_H
+#include <gssapi.h>
+#endif
+
+#if defined(HAVE_GSSAPI_H) || defined(HAVE_GSSAPI_GSSAPI_H) || defined(HAVE_GSSAPI_GSSAPI_GENERIC_H)
+#define HAVE_GSSAPI_SUPPORT    1
+#endif
+
+#include <talloc.h>
+
+#if 0
+
+Disable these now we have checked all code paths and ensured
+NULL returns on zero request. JRA.
+
+void *_talloc_zero_zeronull(const void *ctx, size_t size, const char *name);
+void *_talloc_memdup_zeronull(const void *t, const void *p, size_t size, const char *name);
+void *_talloc_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name);
+void *_talloc_zero_array_zeronull(const void *ctx, size_t el_size, unsigned count, const char *name);
+void *talloc_zeronull(const void *context, size_t size, const char *name);
+
+#define TALLOC(ctx, size) talloc_zeronull(ctx, size, __location__)
+#define TALLOC_P(ctx, type) (type *)talloc_zeronull(ctx, sizeof(type), #type)
+#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array_zeronull(ctx, sizeof(type), count, #type)
+#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup_zeronull(ctx, ptr, size, __location__)
+#define TALLOC_ZERO(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
+#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero_zeronull(ctx, sizeof(type), #type)
+#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array_zeronull(ctx, sizeof(type), count, #type)
+#define TALLOC_SIZE(ctx, size) talloc_zeronull(ctx, size, __location__)
+#define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
+
+#else
+
+#define TALLOC(ctx, size) talloc_named_const(ctx, size, __location__)
+#define TALLOC_P(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
+#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array(ctx, sizeof(type), count, #type)
+#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup(ctx, ptr, size, __location__)
+#define TALLOC_ZERO(ctx, size) _talloc_zero(ctx, size, __location__)
+#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
+#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array(ctx, sizeof(type), count, #type)
+#define TALLOC_SIZE(ctx, size) talloc_named_const(ctx, size, __location__)
+#define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero(ctx, size, __location__)
+
+#endif
+
+#define TALLOC_REALLOC(ctx, ptr, count) _talloc_realloc(ctx, ptr, count, __location__)
+#define TALLOC_REALLOC_ARRAY(ctx, ptr, type, count) (type *)_talloc_realloc_array(ctx, ptr, sizeof(type), count, #type)
+#define talloc_destroy(ctx) talloc_free(ctx)
+#ifndef TALLOC_FREE
+#define TALLOC_FREE(ctx) do { talloc_free(ctx); ctx=NULL; } while(0)
+#endif
+
+/*******************************************************************
+   Type definitions for int16, int32, uint16 and uint32.  Needed
+   for Samba coding style
+*******************************************************************/
+
+#ifndef uint8
+#  define uint8 unsigned char
+#endif
+
+#if !defined(int16) && !defined(HAVE_INT16_FROM_RPC_RPC_H)
+#  if (SIZEOF_SHORT == 4)
+#    define int16 __ERROR___CANNOT_DETERMINE_TYPE_FOR_INT16;
+#  else /* SIZEOF_SHORT != 4 */
+#    define int16 short
+#  endif /* SIZEOF_SHORT != 4 */
+   /* needed to work around compile issue on HP-UX 11.x */
+#  define _INT16        1
+#endif
+
+/*
+ * Note we duplicate the size tests in the unsigned
+ * case as int16 may be a typedef from rpc/rpc.h
+ */
+
+#if !defined(uint16) && !defined(HAVE_UINT16_FROM_RPC_RPC_H)
+#  if (SIZEOF_SHORT == 4)
+#    define uint16 __ERROR___CANNOT_DETERMINE_TYPE_FOR_INT16;
+#  else /* SIZEOF_SHORT != 4 */
+#    define uint16 unsigned short
+#  endif /* SIZEOF_SHORT != 4 */
+#endif
+
+#if !defined(int32) && !defined(HAVE_INT32_FROM_RPC_RPC_H)
+#  if (SIZEOF_INT == 4)
+#    define int32 int
+#  elif (SIZEOF_LONG == 4)
+#    define int32 long
+#  elif (SIZEOF_SHORT == 4)
+#    define int32 short
+#  else
+     /* uggh - no 32 bit type?? probably a CRAY. just hope this works ... */
+#    define int32 int
+#  endif
+#  ifndef _INT32
+     /* needed to work around compile issue on HP-UX 11.x */
+#    define _INT32        1
+#  endif
+#endif
+
+/*
+ * Note we duplicate the size tests in the unsigned
+ * case as int32 may be a typedef from rpc/rpc.h
+ */
+
+#if !defined(uint32) && !defined(HAVE_UINT32_FROM_RPC_RPC_H)
+#  if (SIZEOF_INT == 4)
+#    define uint32 unsigned int
+#  elif (SIZEOF_LONG == 4)
+#    define uint32 unsigned long
+#  elif (SIZEOF_SHORT == 4)
+#    define uint32 unsigned short
+#  else
+      /* uggh - no 32 bit type?? probably a CRAY. just hope this works ... */
+#    define uint32 unsigned
+#  endif
+#endif
+
+/*
+ * check for 8 byte long long
+ */
+
+#if !defined(uint64)
+#  if (SIZEOF_LONG == 8)
+#    define uint64 unsigned long
+#  elif (SIZEOF_LONG_LONG == 8)
+#    define uint64 unsigned long long
+#  endif /* don't lie.  If we don't have it, then don't use it */
+#endif
+
+/* needed on Sun boxes */
+#ifndef INADDR_NONE
+#define INADDR_NONE          0xFFFFFFFF
+#endif
+
+#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_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 q_type;
+	uint16 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 z_type;
+	uint16 z_class;
+};
+
+struct dns_rrec {
+	struct dns_domain_name *name;
+	uint16 type;
+	uint16 r_class;
+	uint32 ttl;
+	uint16 data_length;
+	uint8 *data;
+};
+
+struct dns_tkey_record {
+	struct dns_domain_name *algorithm;
+	time_t inception;
+	time_t expiration;
+	uint16 mode;
+	uint16 error;
+	uint16 key_length;
+	uint8 *key;
+};
+
+struct dns_request {
+	uint16 id;
+	uint16 flags;
+	uint16 num_questions;
+	uint16 num_answers;
+	uint16 num_auths;
+	uint16 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 id;
+	uint16 flags;
+	uint16 num_zones;
+	uint16 num_preqs;
+	uint16 num_updates;
+	uint16 num_additionals;
+	struct dns_zone **zones;
+	struct dns_rrec **preqs;
+	struct dns_rrec **updates;
+	struct dns_rrec **additionals;
+};
+
+struct dns_connection {
+	int32 hType;
+	int s;
+	struct sockaddr RecvAddr;
+};
+
+struct dns_buffer {
+	uint8 *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 q_type, uint16 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 type, uint16 r_class, uint32 ttl,
+			  uint16 data_length, uint8 *data,
+			  struct dns_rrec **prec);
+DNS_ERROR dns_add_rrec(TALLOC_CTX *mem_ctx, struct dns_rrec *rec,
+		       uint16 *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 mode, uint16 error,
+				 uint16 key_length, const uint8 *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 type, uint16 r_class,
+				   struct dns_rrec **prec);
+DNS_ERROR dns_create_name_not_in_use_record(TALLOC_CTX *mem_ctx,
+					    const char *name, uint32 type,
+					    struct dns_rrec **prec);
+DNS_ERROR dns_create_a_record(TALLOC_CTX *mem_ctx, const char *host,
+			      uint32 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 fudge,
+				 uint16 mac_length, const uint8 *mac,
+				 uint16 original_id, uint16 error,
+				 struct dns_rrec **prec);
+DNS_ERROR dns_add_rrec(TALLOC_CTX *mem_ctx, struct dns_rrec *rec,
+		       uint16 *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 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 *data,
+			 size_t len);
+void dns_marshall_uint16(struct dns_buffer *buf, uint16 val);
+void dns_marshall_uint32(struct dns_buffer *buf, uint32 val);
+void dns_unmarshall_buffer(struct dns_buffer *buf, uint8 *data,
+			   size_t len);
+void dns_unmarshall_uint16(struct dns_buffer *buf, uint16 *val);
+void dns_unmarshall_uint32(struct dns_buffer *buf, uint32 *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 dns_response_code(uint16 flags);
+const char *dns_errstr(DNS_ERROR err);
+
+/* from dnsgss.c */
+
+#ifdef HAVE_GSSAPI_SUPPORT
+
+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 fudge);
+
+#endif	/* HAVE_GSSAPI_SUPPORT */
+
+#endif	/* _DNS_H */