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✏️ Editing: nis_object.x

/*
 *	nis_object.x
 *
 * Copyright (c) 2010, Oracle America, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *     * Neither the name of the "Oracle America, Inc." nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

%#pragma ident	"@(#)nis_object.x	1.12	97/11/19"

#if RPC_HDR
%
%#ifndef __nis_object_h
%#define __nis_object_h
%
#endif
/*
 *	This file defines the format for a NIS object in RPC language.
 * It is included by the main .x file and the database access protocol
 * file. It is common because both of them need to deal with the same
 * type of object. Generating the actual code though is a bit messy because
 * the nis.x file and the nis_dba.x file will generate xdr routines to
 * encode/decode objects when only one set is needed. Such is life when
 * one is using rpcgen.
 *
 * Note, the protocol doesn't specify any limits on such things as
 * maximum name length, number of attributes, etc. These are enforced
 * by the database backend. When you hit them you will no. Also see
 * the db_getlimits() function for fetching the limit values.
 *
 */

/* Some manifest constants, chosen to maximize flexibility without
 * plugging the wire full of data.
 */
const NIS_MAXSTRINGLEN = 255;
const NIS_MAXNAMELEN   = 1024;
const NIS_MAXATTRNAME  = 32;
const NIS_MAXATTRVAL   = 2048;
const NIS_MAXCOLUMNS   = 64;
const NIS_MAXATTR      = 16;
const NIS_MAXPATH      = 1024;
const NIS_MAXREPLICAS  = 128;
const NIS_MAXLINKS     = 16;

const NIS_PK_NONE      = 0;	/* no public key (unix/sys auth) */
const NIS_PK_DH	       = 1;	/* Public key is Diffie-Hellman type */
const NIS_PK_RSA       = 2;	/* Public key if RSA type */
const NIS_PK_KERB      = 3;	/* Use kerberos style authentication */
const NIS_PK_DHEXT     = 4;	/* Extended Diffie-Hellman for RPC-GSS */

/*
 * The fundamental name type of NIS. The name may consist of two parts,
 * the first being the fully qualified name, and the second being an
 * optional set of attribute/value pairs.
 */
struct nis_attr {
	string	zattr_ndx<>;	/* name of the index		*/
	opaque	zattr_val<>;	/* Value for the attribute.	*/
};

typedef string nis_name<>;	/* The NIS name itself. */

/* NIS object types are defined by the following enumeration. The numbers
 * they use are based on the following scheme :
 *		     0 - 1023 are reserved for Sun,
 *		1024 - 2047 are defined to be private to a particular tree.
 *		2048 - 4095 are defined to be user defined.
 *		4096 - ...  are reserved for future use.
 *
 * EOL Alert - The non-prefixed names are present for backward
 * compatability only, and will not exist in future releases. Use
 * the NIS_* names for future compatability.
 */

enum zotypes {

BOGUS_OBJ	= 0,	/* Uninitialized object structure	*/
	NO_OBJ		= 1,	/* NULL object (no data)		*/
	DIRECTORY_OBJ	= 2,	/* Directory object describing domain	*/
	GROUP_OBJ	= 3,	/* Group object (a list of names)	*/
	TABLE_OBJ	= 4,	/* Table object (a database schema)	*/
	ENTRY_OBJ	= 5,	/* Entry object (a database record)	*/
	LINK_OBJ	= 6,	/* A name link.				*/
	PRIVATE_OBJ	= 7,	/* Private object (all opaque data)	*/

NIS_BOGUS_OBJ	= 0,	/* Uninitialized object structure	*/
	NIS_NO_OBJ	= 1,	/* NULL object (no data)		*/
	NIS_DIRECTORY_OBJ = 2, /* Directory object describing domain	*/
	NIS_GROUP_OBJ	= 3,	/* Group object (a list of names)	*/
	NIS_TABLE_OBJ	= 4,	/* Table object (a database schema)	*/
	NIS_ENTRY_OBJ	= 5,	/* Entry object (a database record)	*/
	NIS_LINK_OBJ	= 6,	/* A name link.				*/
	NIS_PRIVATE_OBJ  = 7 /* Private object (all opaque data) */
};

/*
 * The types of Name services NIS knows about. They are enumerated
 * here. The Binder code will use this type to determine if it has
 * a set of library routines that will access the indicated name service.
 */
enum nstype {
	UNKNOWN = 0,
	NIS = 1,	/* Nis Plus Service		*/
	SUNYP = 2,	/* Old NIS Service		*/
	IVY = 3,	/* Nis Plus Plus Service	*/
	DNS = 4,	/* Domain Name Service		*/
	X500 = 5,	/* ISO/CCCIT X.500 Service	*/
	DNANS = 6,	/* Digital DECNet Name Service	*/
	XCHS = 7,	/* Xerox ClearingHouse Service	*/
	CDS= 8
};

/*
 * DIRECTORY - The name service object. These objects identify other name
 * servers that are serving some portion of the name space. Each has a
 * type associated with it. The resolver library will note whether or not
 * is has the needed routines to access that type of service.
 * The oarmask structure defines an access rights mask on a per object
 * type basis for the name spaces. The only bits currently used are
 * create and destroy. By enabling or disabling these access rights for
 * a specific object type for a one of the accessor entities (owner,
 * group, world) the administrator can control what types of objects
 * may be freely added to the name space and which require the
 * administrator's approval.
 */
struct oar_mask {
	uint32_t	oa_rights;	/* Access rights mask	*/
	zotypes		oa_otype;	/* Object type		*/
};

struct endpoint {
	string		uaddr<>;
	string		family<>;   /* Transport family (INET, OSI, etc) */
	string		proto<>;    /* Protocol (TCP, UDP, CLNP,  etc)   */
};

/*
 * Note: pkey is a netobj which is limited to 1024 bytes which limits the
 * keysize to 8192 bits. This is consider to be a reasonable limit for
 * the expected lifetime of this service.
 */
struct nis_server {
	nis_name	name;		/* Principal name of the server  */
	endpoint	ep<>;		/* Universal addr(s) for server  */
	uint32_t	key_type;	/* Public key type		 */
	netobj		pkey;		/* server's public key		 */
};

struct directory_obj {
	nis_name   do_name;	 /* Name of the directory being served   */
	nstype	   do_type;	 /* one of NIS, DNS, IVY, YP, or X.500	 */
	nis_server do_servers<>; /* <0> == Primary name server		 */
	uint32_t   do_ttl;	 /* Time To Live (for caches)		 */
	oar_mask   do_armask<>;  /* Create/Destroy rights by object type */
};

/*
 * ENTRY - This is one row of data from an information base.
 * The type value is used by the client library to convert the entry to
 * it's internal structure representation. The Table name is a back pointer
 * to the table where the entry is stored. This allows the client library
 * to determine where to send a request if the client wishes to change this
 * entry but got to it through a LINK rather than directly.
 * If the entry is a "standalone" entry then this field is void.
 */
const EN_BINARY   = 1;	/* Indicates value is binary data	*/
const EN_CRYPT    = 2;	/* Indicates the value is encrypted	*/
const EN_XDR      = 4;	/* Indicates the value is XDR encoded	*/
const EN_MODIFIED = 8;	/* Indicates entry is modified.	*/
const EN_ASN1     = 64;	/* Means contents use ASN.1 encoding    */

struct entry_col {
	uint32_t	ec_flags;	/* Flags for this value */
	opaque		ec_value<>;	/* It's textual value	*/
};

struct entry_obj {
	string	en_type<>;	/* Type of entry such as "passwd" */
	entry_col en_cols<>;	/* Value for the entry		  */
};

/*
 * GROUP - The group object contains a list of NIS principal names. Groups
 * are used to authorize principals. Each object has a set of access rights
 * for members of its group. Principal names in groups are in the form
 * name.directory and recursive groups are expressed as @groupname.directory
 */
struct group_obj {
	uint32_t	gr_flags;	/* Flags controlling group	*/
	nis_name	gr_members<>;	/* List of names in group	*/
};

/*
 * LINK - This is the LINK object. It is quite similar to a symbolic link
 * in the UNIX filesystem. The attributes in the main object structure are
 * relative to the LINK data and not what it points to (like the file system)
 * "modify" privleges here indicate the right to modify what the link points
 * at and not to modify that actual object pointed to by the link.
 */
struct link_obj {
	zotypes	 li_rtype;	/* Real type of the object	*/
	nis_attr li_attrs<>;	/* Attribute/Values for tables	*/
	nis_name li_name;	/* The object's real NIS name	*/
};

/*
 * TABLE - This is the table object. It implements a simple
 * data base that applications and use for configuration or
 * administration purposes. The role of the table is to group together
 * a set of related entries. Tables are the simple database component
 * of NIS. Like many databases, tables are logically divided into columns
 * and rows. The columns are labeled with indexes and each ENTRY makes
 * up a row. Rows may be addressed within the table by selecting one
 * or more indexes, and values for those indexes. Each row which has
 * a value for the given index that matches the desired value is returned.
 * Within the definition of each column there is a flags variable, this
 * variable contains flags which determine whether or not the column is
 * searchable, contains binary data, and access rights for the entry objects
 * column value.
 */

const TA_BINARY     = 1;	/* Means table data is binary		*/
const TA_CRYPT      = 2;	/* Means value should be encrypted	*/
const TA_XDR        = 4;	/* Means value is XDR encoded		*/
const TA_SEARCHABLE = 8;	/* Means this column is searchable	*/
const TA_CASE       = 16;	/* Means this column is Case Sensitive	*/
const TA_MODIFIED   = 32;	/* Means this columns attrs are modified*/
const TA_ASN1       = 64;	/* Means contents use ASN.1 encoding     */

struct table_col {
	string		tc_name<64>;	/* Column Name		   */
	uint32_t	tc_flags;	/* control flags	   */
	uint32_t	tc_rights;	/* Access rights mask	   */
};

struct table_obj {
	string	  ta_type<64>;	 /* Table type such as "passwd"	*/
	int	  ta_maxcol;	 /* Total number of columns	*/
	u_char	  ta_sep;	 /* Separator character		*/
	table_col ta_cols<>;	 /* The number of table indexes */
	string	  ta_path<>;	 /* A search path for this table */
};

/*
 * This union joins together all of the currently known objects.
 */
union objdata switch (zotypes zo_type) {
	case NIS_DIRECTORY_OBJ :
		struct directory_obj di_data;
	case NIS_GROUP_OBJ :
		struct group_obj gr_data;
	case NIS_TABLE_OBJ :
		struct table_obj ta_data;
	case NIS_ENTRY_OBJ:
		struct entry_obj en_data;
	case NIS_LINK_OBJ :
		struct link_obj li_data;
	case NIS_PRIVATE_OBJ :
		opaque	po_data<>;
	case NIS_NO_OBJ :
		void;
	case NIS_BOGUS_OBJ :
		void;
	default :
		void;
};

/*
 * This is the basic NIS object data type. It consists of a generic part
 * which all objects contain, and a specialized part which varies depending
 * on the type of the object. All of the specialized sections have been
 * described above. You might have wondered why they all start with an
 * integer size, followed by the useful data. The answer is, when the
 * server doesn't recognize the type returned it treats it as opaque data.
 * And the definition for opaque data is {int size; char *data;}. In this
 * way, servers and utility routines that do not understand a given type
 * may still pass it around. One has to be careful in setting
 * this variable accurately, it must take into account such things as
 * XDR padding of structures etc. The best way to set it is to note one's
 * position in the XDR encoding stream, encode the structure, look at the
 * new position and calculate the size.
 */
struct nis_oid {
	uint32_t ctime;		/* Time of objects creation	*/
	uint32_t mtime;		/* Time of objects modification */
};

struct nis_object {
	nis_oid	 zo_oid;	/* object identity verifier.		*/
	nis_name zo_name;	/* The NIS name for this object		*/
	nis_name zo_owner;	/* NIS name of object owner.		*/
	nis_name zo_group;	/* NIS name of access group.		*/
	nis_name zo_domain;	/* The administrator for the object	*/
	uint32_t zo_access;	/* Access rights (owner, group, world)	*/
	uint32_t zo_ttl;	/* Object's time to live in seconds.	*/
	objdata	 zo_data;	/* Data structure for this type		*/
};
#if RPC_HDR
%
%#endif /* if __nis_object_h */
%
#endif

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