1 /* 2 * nis_object.x 3 * 4 * Copyright (c) 1988-1992 Sun Microsystems Inc 5 * All Rights Reserved. 6 */ 7 8 %#pragma ident "@(#)nis_object.x 1.12 97/11/19 SMI" 9 10 #if RPC_HDR 11 % 12 %#ifndef __nis_object_h 13 %#define __nis_object_h 14 % 15 #endif 16 /* 17 * This file defines the format for a NIS object in RPC language. 18 * It is included by the main .x file and the database access protocol 19 * file. It is common because both of them need to deal with the same 20 * type of object. Generating the actual code though is a bit messy because 21 * the nis.x file and the nis_dba.x file will generate xdr routines to 22 * encode/decode objects when only one set is needed. Such is life when 23 * one is using rpcgen. 24 * 25 * Note, the protocol doesn't specify any limits on such things as 26 * maximum name length, number of attributes, etc. These are enforced 27 * by the database backend. When you hit them you will no. Also see 28 * the db_getlimits() function for fetching the limit values. 29 * 30 */ 31 32 /* Some manifest constants, chosen to maximize flexibility without 33 * plugging the wire full of data. 34 */ 35 const NIS_MAXSTRINGLEN = 255; 36 const NIS_MAXNAMELEN = 1024; 37 const NIS_MAXATTRNAME = 32; 38 const NIS_MAXATTRVAL = 2048; 39 const NIS_MAXCOLUMNS = 64; 40 const NIS_MAXATTR = 16; 41 const NIS_MAXPATH = 1024; 42 const NIS_MAXREPLICAS = 128; 43 const NIS_MAXLINKS = 16; 44 45 const NIS_PK_NONE = 0; /* no public key (unix/sys auth) */ 46 const NIS_PK_DH = 1; /* Public key is Diffie-Hellman type */ 47 const NIS_PK_RSA = 2; /* Public key if RSA type */ 48 const NIS_PK_KERB = 3; /* Use kerberos style authentication */ 49 const NIS_PK_DHEXT = 4; /* Extended Diffie-Hellman for RPC-GSS */ 50 51 /* 52 * The fundamental name type of NIS. The name may consist of two parts, 53 * the first being the fully qualified name, and the second being an 54 * optional set of attribute/value pairs. 55 */ 56 struct nis_attr { 57 string zattr_ndx<>; /* name of the index */ 58 opaque zattr_val<>; /* Value for the attribute. */ 59 }; 60 61 typedef string nis_name<>; /* The NIS name itself. */ 62 63 /* NIS object types are defined by the following enumeration. The numbers 64 * they use are based on the following scheme : 65 * 0 - 1023 are reserved for Sun, 66 * 1024 - 2047 are defined to be private to a particular tree. 67 * 2048 - 4095 are defined to be user defined. 68 * 4096 - ... are reserved for future use. 69 * 70 * EOL Alert - The non-prefixed names are present for backward 71 * compatability only, and will not exist in future releases. Use 72 * the NIS_* names for future compatability. 73 */ 74 75 enum zotypes { 76 77 BOGUS_OBJ = 0, /* Uninitialized object structure */ 78 NO_OBJ = 1, /* NULL object (no data) */ 79 DIRECTORY_OBJ = 2, /* Directory object describing domain */ 80 GROUP_OBJ = 3, /* Group object (a list of names) */ 81 TABLE_OBJ = 4, /* Table object (a database schema) */ 82 ENTRY_OBJ = 5, /* Entry object (a database record) */ 83 LINK_OBJ = 6, /* A name link. */ 84 PRIVATE_OBJ = 7, /* Private object (all opaque data) */ 85 86 NIS_BOGUS_OBJ = 0, /* Uninitialized object structure */ 87 NIS_NO_OBJ = 1, /* NULL object (no data) */ 88 NIS_DIRECTORY_OBJ = 2, /* Directory object describing domain */ 89 NIS_GROUP_OBJ = 3, /* Group object (a list of names) */ 90 NIS_TABLE_OBJ = 4, /* Table object (a database schema) */ 91 NIS_ENTRY_OBJ = 5, /* Entry object (a database record) */ 92 NIS_LINK_OBJ = 6, /* A name link. */ 93 NIS_PRIVATE_OBJ = 7 /* Private object (all opaque data) */ 94 }; 95 96 /* 97 * The types of Name services NIS knows about. They are enumerated 98 * here. The Binder code will use this type to determine if it has 99 * a set of library routines that will access the indicated name service. 100 */ 101 enum nstype { 102 UNKNOWN = 0, 103 NIS = 1, /* Nis Plus Service */ 104 SUNYP = 2, /* Old NIS Service */ 105 IVY = 3, /* Nis Plus Plus Service */ 106 DNS = 4, /* Domain Name Service */ 107 X500 = 5, /* ISO/CCCIT X.500 Service */ 108 DNANS = 6, /* Digital DECNet Name Service */ 109 XCHS = 7, /* Xerox ClearingHouse Service */ 110 CDS= 8 111 }; 112 113 /* 114 * DIRECTORY - The name service object. These objects identify other name 115 * servers that are serving some portion of the name space. Each has a 116 * type associated with it. The resolver library will note whether or not 117 * is has the needed routines to access that type of service. 118 * The oarmask structure defines an access rights mask on a per object 119 * type basis for the name spaces. The only bits currently used are 120 * create and destroy. By enabling or disabling these access rights for 121 * a specific object type for a one of the accessor entities (owner, 122 * group, world) the administrator can control what types of objects 123 * may be freely added to the name space and which require the 124 * administrator's approval. 125 */ 126 struct oar_mask { 127 uint32_t oa_rights; /* Access rights mask */ 128 zotypes oa_otype; /* Object type */ 129 }; 130 131 struct endpoint { 132 string uaddr<>; 133 string family<>; /* Transport family (INET, OSI, etc) */ 134 string proto<>; /* Protocol (TCP, UDP, CLNP, etc) */ 135 }; 136 137 /* 138 * Note: pkey is a netobj which is limited to 1024 bytes which limits the 139 * keysize to 8192 bits. This is consider to be a reasonable limit for 140 * the expected lifetime of this service. 141 */ 142 struct nis_server { 143 nis_name name; /* Principal name of the server */ 144 endpoint ep<>; /* Universal addr(s) for server */ 145 uint32_t key_type; /* Public key type */ 146 netobj pkey; /* server's public key */ 147 }; 148 149 struct directory_obj { 150 nis_name do_name; /* Name of the directory being served */ 151 nstype do_type; /* one of NIS, DNS, IVY, YP, or X.500 */ 152 nis_server do_servers<>; /* <0> == Primary name server */ 153 uint32_t do_ttl; /* Time To Live (for caches) */ 154 oar_mask do_armask<>; /* Create/Destroy rights by object type */ 155 }; 156 157 /* 158 * ENTRY - This is one row of data from an information base. 159 * The type value is used by the client library to convert the entry to 160 * it's internal structure representation. The Table name is a back pointer 161 * to the table where the entry is stored. This allows the client library 162 * to determine where to send a request if the client wishes to change this 163 * entry but got to it through a LINK rather than directly. 164 * If the entry is a "standalone" entry then this field is void. 165 */ 166 const EN_BINARY = 1; /* Indicates value is binary data */ 167 const EN_CRYPT = 2; /* Indicates the value is encrypted */ 168 const EN_XDR = 4; /* Indicates the value is XDR encoded */ 169 const EN_MODIFIED = 8; /* Indicates entry is modified. */ 170 const EN_ASN1 = 64; /* Means contents use ASN.1 encoding */ 171 172 struct entry_col { 173 uint32_t ec_flags; /* Flags for this value */ 174 opaque ec_value<>; /* It's textual value */ 175 }; 176 177 struct entry_obj { 178 string en_type<>; /* Type of entry such as "passwd" */ 179 entry_col en_cols<>; /* Value for the entry */ 180 }; 181 182 /* 183 * GROUP - The group object contains a list of NIS principal names. Groups 184 * are used to authorize principals. Each object has a set of access rights 185 * for members of its group. Principal names in groups are in the form 186 * name.directory and recursive groups are expressed as @groupname.directory 187 */ 188 struct group_obj { 189 uint32_t gr_flags; /* Flags controlling group */ 190 nis_name gr_members<>; /* List of names in group */ 191 }; 192 193 /* 194 * LINK - This is the LINK object. It is quite similar to a symbolic link 195 * in the UNIX filesystem. The attributes in the main object structure are 196 * relative to the LINK data and not what it points to (like the file system) 197 * "modify" privleges here indicate the right to modify what the link points 198 * at and not to modify that actual object pointed to by the link. 199 */ 200 struct link_obj { 201 zotypes li_rtype; /* Real type of the object */ 202 nis_attr li_attrs<>; /* Attribute/Values for tables */ 203 nis_name li_name; /* The object's real NIS name */ 204 }; 205 206 /* 207 * TABLE - This is the table object. It implements a simple 208 * data base that applications and use for configuration or 209 * administration purposes. The role of the table is to group together 210 * a set of related entries. Tables are the simple database component 211 * of NIS. Like many databases, tables are logically divided into columns 212 * and rows. The columns are labeled with indexes and each ENTRY makes 213 * up a row. Rows may be addressed within the table by selecting one 214 * or more indexes, and values for those indexes. Each row which has 215 * a value for the given index that matches the desired value is returned. 216 * Within the definition of each column there is a flags variable, this 217 * variable contains flags which determine whether or not the column is 218 * searchable, contains binary data, and access rights for the entry objects 219 * column value. 220 */ 221 222 const TA_BINARY = 1; /* Means table data is binary */ 223 const TA_CRYPT = 2; /* Means value should be encrypted */ 224 const TA_XDR = 4; /* Means value is XDR encoded */ 225 const TA_SEARCHABLE = 8; /* Means this column is searchable */ 226 const TA_CASE = 16; /* Means this column is Case Sensitive */ 227 const TA_MODIFIED = 32; /* Means this columns attrs are modified*/ 228 const TA_ASN1 = 64; /* Means contents use ASN.1 encoding */ 229 230 struct table_col { 231 string tc_name<64>; /* Column Name */ 232 uint32_t tc_flags; /* control flags */ 233 uint32_t tc_rights; /* Access rights mask */ 234 }; 235 236 struct table_obj { 237 string ta_type<64>; /* Table type such as "passwd" */ 238 int ta_maxcol; /* Total number of columns */ 239 u_char ta_sep; /* Separator character */ 240 table_col ta_cols<>; /* The number of table indexes */ 241 string ta_path<>; /* A search path for this table */ 242 }; 243 244 /* 245 * This union joins together all of the currently known objects. 246 */ 247 union objdata switch (zotypes zo_type) { 248 case NIS_DIRECTORY_OBJ : 249 struct directory_obj di_data; 250 case NIS_GROUP_OBJ : 251 struct group_obj gr_data; 252 case NIS_TABLE_OBJ : 253 struct table_obj ta_data; 254 case NIS_ENTRY_OBJ: 255 struct entry_obj en_data; 256 case NIS_LINK_OBJ : 257 struct link_obj li_data; 258 case NIS_PRIVATE_OBJ : 259 opaque po_data<>; 260 case NIS_NO_OBJ : 261 void; 262 case NIS_BOGUS_OBJ : 263 void; 264 default : 265 void; 266 }; 267 268 /* 269 * This is the basic NIS object data type. It consists of a generic part 270 * which all objects contain, and a specialized part which varies depending 271 * on the type of the object. All of the specialized sections have been 272 * described above. You might have wondered why they all start with an 273 * integer size, followed by the useful data. The answer is, when the 274 * server doesn't recognize the type returned it treats it as opaque data. 275 * And the definition for opaque data is {int size; char *data;}. In this 276 * way, servers and utility routines that do not understand a given type 277 * may still pass it around. One has to be careful in setting 278 * this variable accurately, it must take into account such things as 279 * XDR padding of structures etc. The best way to set it is to note one's 280 * position in the XDR encoding stream, encode the structure, look at the 281 * new position and calculate the size. 282 */ 283 struct nis_oid { 284 uint32_t ctime; /* Time of objects creation */ 285 uint32_t mtime; /* Time of objects modification */ 286 }; 287 288 struct nis_object { 289 nis_oid zo_oid; /* object identity verifier. */ 290 nis_name zo_name; /* The NIS name for this object */ 291 nis_name zo_owner; /* NIS name of object owner. */ 292 nis_name zo_group; /* NIS name of access group. */ 293 nis_name zo_domain; /* The administrator for the object */ 294 uint32_t zo_access; /* Access rights (owner, group, world) */ 295 uint32_t zo_ttl; /* Object's time to live in seconds. */ 296 objdata zo_data; /* Data structure for this type */ 297 }; 298 #if RPC_HDR 299 % 300 %#endif /* if __nis_object_h */ 301 % 302 #endif 303
