1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2014 Garrett D'Amore <garrett@damore.org> 23 * 24 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 25 * Use is subject to license terms. 26 * 27 * Database-specific definitions for the getXXXbyYYY routines 28 * (e.g getpwuid_r(), ether_ntohost()) that use the name-service switch. 29 * Database-independent definitions are in <nss_common.h> 30 * 31 * Ideally, this is the only switch header file one would add things 32 * to in order to support a new database. 33 * 34 * NOTE: The interfaces documented in this file may change in a minor 35 * release. It is intended that in the future a stronger committment 36 * will be made to these interface definitions which will guarantee 37 * them across minor releases. 38 */ 39 40 #ifndef _NSS_DBDEFS_H 41 #define _NSS_DBDEFS_H 42 43 #include <sys/types.h> 44 #include <unistd.h> 45 #include <errno.h> 46 #include <netdb.h> /* MAXALIASES, MAXADDRS */ 47 #include <limits.h> /* LOGNAME_MAX */ 48 #include <nss_common.h> 49 50 #ifdef __cplusplus 51 extern "C" { 52 #endif 53 54 #ifndef NSS_INCLUDE_UNSAFE 55 #define NSS_INCLUDE_UNSAFE 1 /* Build old, MT-unsafe interfaces, */ 56 #endif /* NSS_INCLUDE_UNSAFE */ /* e.g. getpwnam (c.f. getpwnam_r) */ 57 58 /* 59 * Names of the well-known databases. 60 */ 61 62 #define NSS_DBNAM_ALIASES "aliases" /* E-mail aliases, that is */ 63 #define NSS_DBNAM_AUTOMOUNT "automount" 64 #define NSS_DBNAM_BOOTPARAMS "bootparams" 65 #define NSS_DBNAM_ETHERS "ethers" 66 #define NSS_DBNAM_GROUP "group" 67 #define NSS_DBNAM_HOSTS "hosts" 68 #define NSS_DBNAM_IPNODES "ipnodes" 69 #define NSS_DBNAM_NETGROUP "netgroup" 70 #define NSS_DBNAM_NETMASKS "netmasks" 71 #define NSS_DBNAM_NETWORKS "networks" 72 #define NSS_DBNAM_PASSWD "passwd" 73 #define NSS_DBNAM_PRINTERS "printers" 74 #define NSS_DBNAM_PROJECT "project" 75 #define NSS_DBNAM_PROTOCOLS "protocols" 76 #define NSS_DBNAM_PUBLICKEY "publickey" 77 #define NSS_DBNAM_RPC "rpc" 78 #define NSS_DBNAM_SERVICES "services" 79 #define NSS_DBNAM_AUDITUSER "audit_user" 80 #define NSS_DBNAM_AUTHATTR "auth_attr" 81 #define NSS_DBNAM_EXECATTR "exec_attr" 82 #define NSS_DBNAM_PROFATTR "prof_attr" 83 #define NSS_DBNAM_USERATTR "user_attr" 84 85 #define NSS_DBNAM_TSOL_TP "tnrhtp" 86 #define NSS_DBNAM_TSOL_RH "tnrhdb" 87 #define NSS_DBNAM_TSOL_ZC "tnzonecfg" 88 89 /* getspnam() et al use the "passwd" config entry but the "shadow" backend */ 90 #define NSS_DBNAM_SHADOW "shadow" 91 92 /* The "compat" backend gets config entries for these pseudo-databases */ 93 #define NSS_DBNAM_PASSWD_COMPAT "passwd_compat" 94 #define NSS_DBNAM_GROUP_COMPAT "group_compat" 95 96 /* 97 * Default switch configuration, compiled into the front-ends. 98 * 99 * Absent good reasons to the contrary, this should be compatible with the 100 * default /etc/nsswitch.conf file. 101 */ 102 #define NSS_FILES_ONLY "files" 103 #define NSS_FILES_NS "files nis" 104 #define NSS_NS_FALLBACK "nis [NOTFOUND=return] files" 105 #define NSS_NS_ONLY "nis" 106 #define NSS_TSOL_FALLBACK "files ldap" 107 108 #define NSS_DEFCONF_ALIASES NSS_FILES_NS 109 #define NSS_DEFCONF_AUTOMOUNT NSS_FILES_NS 110 #define NSS_DEFCONF_BOOTPARAMS NSS_NS_FALLBACK 111 #define NSS_DEFCONF_ETHERS NSS_NS_FALLBACK 112 #define NSS_DEFCONF_GROUP NSS_FILES_NS 113 #define NSS_DEFCONF_HOSTS NSS_NS_FALLBACK 114 #define NSS_DEFCONF_IPNODES NSS_NS_FALLBACK 115 #define NSS_DEFCONF_NETGROUP NSS_NS_ONLY 116 #define NSS_DEFCONF_NETMASKS NSS_NS_FALLBACK 117 #define NSS_DEFCONF_NETWORKS NSS_NS_FALLBACK 118 #define NSS_DEFCONF_PASSWD NSS_FILES_NS 119 #define NSS_DEFCONF_PRINTERS "user files nis" 120 #define NSS_DEFCONF_PROJECT NSS_FILES_NS 121 #define NSS_DEFCONF_PROTOCOLS NSS_NS_FALLBACK 122 #define NSS_DEFCONF_PUBLICKEY NSS_FILES_NS 123 #define NSS_DEFCONF_RPC NSS_NS_FALLBACK 124 #define NSS_DEFCONF_SERVICES NSS_FILES_NS /* speeds up byname() */ 125 126 #define NSS_DEFCONF_GROUP_COMPAT NSS_NS_ONLY 127 #define NSS_DEFCONF_PASSWD_COMPAT NSS_NS_ONLY 128 129 #define NSS_DEFCONF_ATTRDB NSS_FILES_NS 130 131 #define NSS_DEFCONF_AUDITUSER NSS_DEFCONF_PASSWD 132 #define NSS_DEFCONF_USERATTR NSS_DEFCONF_PASSWD 133 #define NSS_DEFCONF_AUTHATTR NSS_DEFCONF_ATTRDB 134 #define NSS_DEFCONF_PROFATTR NSS_DEFCONF_ATTRDB 135 #define NSS_DEFCONF_EXECATTR NSS_DEFCONF_PROFATTR 136 137 #define NSS_DEFCONF_TSOL_TP NSS_TSOL_FALLBACK 138 #define NSS_DEFCONF_TSOL_RH NSS_TSOL_FALLBACK 139 #define NSS_DEFCONF_TSOL_ZC NSS_TSOL_FALLBACK 140 141 /* 142 * Line-lengths that the "files" and "compat" backends will try to support. 143 * It may be reasonable (even advisable) to use smaller values than these. 144 */ 145 146 #define NSS_BUFSIZ 1024 147 148 #define NSS_LINELEN_GROUP ((NSS_BUFSIZ) * 8) 149 #define NSS_LINELEN_HOSTS ((NSS_BUFSIZ) * 8) 150 #define NSS_LINELEN_IPNODES ((NSS_BUFSIZ) * 8) 151 #define NSS_LINELEN_NETMASKS NSS_BUFSIZ 152 #define NSS_LINELEN_NETWORKS NSS_BUFSIZ 153 #define NSS_LINELEN_PASSWD NSS_BUFSIZ 154 #define NSS_LINELEN_PRINTERS NSS_BUFSIZ 155 #define NSS_LINELEN_PROJECT ((NSS_BUFSIZ) * 4) 156 #define NSS_LINELEN_PROTOCOLS NSS_BUFSIZ 157 #define NSS_LINELEN_PUBLICKEY NSS_BUFSIZ 158 #define NSS_LINELEN_RPC NSS_BUFSIZ 159 #define NSS_LINELEN_SERVICES NSS_BUFSIZ 160 #define NSS_LINELEN_SHADOW NSS_BUFSIZ 161 #define NSS_LINELEN_ETHERS NSS_BUFSIZ 162 #define NSS_LINELEN_BOOTPARAMS NSS_BUFSIZ 163 164 #define NSS_LINELEN_ATTRDB NSS_BUFSIZ 165 166 #define NSS_LINELEN_AUDITUSER NSS_LINELEN_ATTRDB 167 #define NSS_LINELEN_AUTHATTR NSS_LINELEN_ATTRDB 168 #define NSS_LINELEN_EXECATTR NSS_LINELEN_ATTRDB 169 #define NSS_LINELEN_PROFATTR NSS_LINELEN_ATTRDB 170 #define NSS_LINELEN_USERATTR NSS_LINELEN_ATTRDB 171 172 #define NSS_MMAPLEN_EXECATTR NSS_LINELEN_EXECATTR * 8 173 174 #define NSS_LINELEN_TSOL NSS_BUFSIZ 175 176 #define NSS_LINELEN_TSOL_TP NSS_LINELEN_TSOL 177 #define NSS_LINELEN_TSOL_RH NSS_LINELEN_TSOL 178 #define NSS_LINELEN_TSOL_ZC NSS_LINELEN_TSOL 179 180 /* 181 * Reasonable defaults for 'buflen' values passed to _r functions. The BSD 182 * and SunOS 4.x implementations of the getXXXbyYYY() functions used hard- 183 * coded array sizes; the values here are meant to handle anything that 184 * those implementations handled. 185 * === These might more reasonably go in <pwd.h>, <netdb.h> et al 186 */ 187 188 #define NSS_BUFLEN_GROUP NSS_LINELEN_GROUP 189 #define NSS_BUFLEN_HOSTS \ 190 (NSS_LINELEN_HOSTS + (MAXALIASES + MAXADDRS + 2) * sizeof (char *)) 191 #define NSS_BUFLEN_IPNODES \ 192 (NSS_LINELEN_IPNODES + (MAXALIASES + MAXADDRS + 2) * sizeof (char *)) 193 #define NSS_BUFLEN_NETGROUP (MAXHOSTNAMELEN * 2 + LOGNAME_MAX + 3) 194 #define NSS_BUFLEN_NETWORKS NSS_LINELEN_NETWORKS /* === ? + 35 * 4 */ 195 #define NSS_BUFLEN_PASSWD NSS_LINELEN_PASSWD 196 #define NSS_BUFLEN_PROJECT (NSS_LINELEN_PROJECT + 800 * sizeof (char *)) 197 #define NSS_BUFLEN_PROTOCOLS NSS_LINELEN_PROTOCOLS /* === ? + 35 * 4 */ 198 #define NSS_BUFLEN_PUBLICKEY NSS_LINELEN_PUBLICKEY 199 #define NSS_BUFLEN_RPC NSS_LINELEN_RPC /* === ? + 35 * 4 */ 200 #define NSS_BUFLEN_SERVICES NSS_LINELEN_SERVICES /* === ? + 35 * 4 */ 201 #define NSS_BUFLEN_SHADOW NSS_LINELEN_SHADOW 202 #define NSS_BUFLEN_ETHERS NSS_LINELEN_ETHERS 203 #define NSS_BUFLEN_BOOTPARAMS NSS_LINELEN_BOOTPARAMS 204 205 #define NSS_BUFLEN_ATTRDB NSS_LINELEN_ATTRDB 206 207 #define NSS_BUFLEN_AUDITUSER NSS_BUFLEN_ATTRDB 208 #define NSS_BUFLEN_AUTHATTR NSS_BUFLEN_ATTRDB 209 #define NSS_BUFLEN_EXECATTR NSS_BUFLEN_ATTRDB 210 #define NSS_BUFLEN_PROFATTR NSS_BUFLEN_ATTRDB 211 #define NSS_BUFLEN_USERATTR ((NSS_BUFLEN_ATTRDB) * 8) 212 213 #define NSS_BUFLEN_TSOL NSS_LINELEN_TSOL 214 #define NSS_BUFLEN_TSOL_TP NSS_BUFLEN_TSOL 215 #define NSS_BUFLEN_TSOL_RH NSS_BUFLEN_TSOL 216 #define NSS_BUFLEN_TSOL_ZC NSS_BUFLEN_TSOL 217 218 /* 219 * Default cache door buffer size (2x largest buffer) 220 */ 221 222 #define NSS_BUFLEN_DOOR ((NSS_BUFSIZ) * 16) 223 224 /* 225 * Arguments and results, passed between the frontends and backends for 226 * the well-known databases. The getXbyY_r() and getXent_r() routines 227 * use a common format that is further described below; other routines 228 * use their own formats. 229 */ 230 231 /* 232 * The nss_str2ent_t routine is the data marshaller for the nsswitch. 233 * it converts 'native files' format into 'entry' format as part of the 234 * return processing for a getXbyY interface. 235 * 236 * The nss_groupstr_t routine does the real work for any backend 237 * that can supply a netgroup entry as a string in /etc/group format 238 */ 239 typedef int (*nss_str2ent_t)(const char *in, int inlen, 240 void *ent, char *buf, int buflen); 241 242 struct nss_groupsbymem; /* forward definition */ 243 typedef nss_status_t (*nss_groupstr_t)(const char *instr, int inlen, 244 struct nss_groupsbymem *); 245 246 /* 247 * The initgroups() function [see initgroups(3c)] needs to find all the 248 * groups to which a given user belongs. To do this it calls 249 * _getgroupsbymember(), which is part of the frontend for the "group" 250 * database. 251 * We want the same effect as if we used getgrent_r() to enumerate the 252 * entire groups database (possibly from multiple sources), but getgrent_r() 253 * is too inefficient. Most backends can do better if they know they're 254 * meant to scan all groups; hence there's a separate backend operation, 255 * NSS_DBOP_GROUP_BYMEMBER, which uses the nss_groupsbymem struct. 256 * Note that the normal return-value from such a backend, even when it 257 * successfully finds matching group entries, is NSS_NOTFOUND, because 258 * this tells the switch engine to keep searching in any more sources. 259 * In fact, the backends only return NSS_SUCCESS if they find enough 260 * matching entries that the gid_array is completely filled, in which 261 * case the switch engine should stop searching. 262 * If the force_slow_way field is set, the backend should eschew any cached 263 * information (e.g. the YP netid.byname map or the NIS+ cred.org_dir table) 264 * and should instead grind its way through the group map/table/whatever. 265 */ 266 267 struct nss_groupsbymem { /* For _getgroupsbymember() */ 268 /* in: */ 269 const char *username; 270 gid_t *gid_array; 271 int maxgids; 272 int force_slow_way; 273 nss_str2ent_t str2ent; 274 nss_groupstr_t process_cstr; 275 276 /* in_out: */ 277 int numgids; 278 }; 279 280 /* 281 * The netgroup routines are handled as follows: 282 * 283 * Policy decision: 284 * If netgroup A refers to netgroup B, both must occur in the same 285 * source (other choices give very confusing semantics). This 286 * assumption is deeply embedded in the frontend and backends. 287 * 288 * - setnetgrent(), despite its name, is really a getXXXbyYYY operation: 289 * it takes a name and finds a netgroup with that name (see the 290 * nss_setnetgrent_args struct below). The "result" that it returns 291 * to the frontend is an nss_backend_t for a pseudo-backend that allows 292 * one to enumerate the members of that netgroup. 293 * 294 * - getnetgrent() calls the 'getXXXent' function in the pseudo-backend; 295 * it doesn't go through the switch engine at all. It uses the 296 * nss_getnetgrent_args struct below. 297 * 298 * - innetgr() is implemented on top of __multi_innetgr(), which replaces 299 * each (char *) argument of innetgr() with a counted vector of (char *). 300 * The semantics are the same as an OR of the results of innetgr() 301 * operations on each possible 4-tuple picked from the arguments, but 302 * it's possible to implement some cases more efficiently. This is 303 * important for mountd, which used to read YP netgroup.byhost directly 304 * in order to determine efficiently whether a given host belonged to any 305 * one of a long list of netgroups. Wildcarded arguments are indicated 306 * by a count of zero. 307 * 308 * - __multi_innetgr() uses the nss_innetgr_args struct. A backend whose 309 * source contains at least one of the groups listed in the 'groups' 310 * vector will return NSS_SUCCESS and will set the 'status' field to 311 * indicate whether any 4-tuple was satisfied. A backend will only 312 * return NSS_NOTFOUND if the source contained none of the groups 313 * listed in the 'groups' vector. 314 */ 315 316 enum nss_netgr_argn { /* We need (machine, user, domain) triples */ 317 NSS_NETGR_MACHINE = 0, 318 NSS_NETGR_USER = 1, 319 NSS_NETGR_DOMAIN = 2, 320 NSS_NETGR_N = 3 321 }; 322 323 enum nss_netgr_status { /* Status from setnetgrent, multi_innetgr */ 324 NSS_NETGR_FOUND = 0, 325 NSS_NETGR_NO = 1, 326 NSS_NETGR_NOMEM = 2 327 }; 328 329 struct nss_setnetgrent_args { 330 /* in: */ 331 const char *netgroup; 332 /* out: */ 333 nss_backend_t *iterator; /* <==== Explain */ 334 }; 335 336 struct nss_getnetgrent_args { 337 /* in: */ 338 char *buffer; 339 int buflen; 340 /* out: */ 341 enum nss_netgr_status status; 342 char *retp[NSS_NETGR_N]; 343 }; 344 345 typedef unsigned nss_innetgr_argc; /* 0 means wildcard */ 346 typedef char ** nss_innetgr_argv; /* === Do we really need these? */ 347 348 struct nss_innetgr_1arg { 349 nss_innetgr_argc argc; 350 nss_innetgr_argv argv; 351 }; 352 353 struct nss_innetgr_args { 354 /* in: */ 355 struct nss_innetgr_1arg arg[NSS_NETGR_N]; 356 struct nss_innetgr_1arg groups; 357 /* out: */ 358 enum nss_netgr_status status; 359 }; 360 361 /* 362 * nss_XbyY_buf_t -- structure containing the generic arguments passwd to 363 * getXXXbyYYY_r() and getXXXent_r() routines. The (void *) value points to 364 * a struct of the appropriate type, e.g. struct passwd or struct hostent. 365 * 366 * The functions that allocate and free these structures do no locking at 367 * all, since the routines that use them are inherently MT-unsafe anyway. 368 */ 369 370 typedef struct { 371 void *result; /* "result" parameter to getXbyY_r() */ 372 char *buffer; /* "buffer" " " */ 373 int buflen; /* "buflen" " " */ 374 } nss_XbyY_buf_t; 375 376 extern nss_XbyY_buf_t *_nss_XbyY_buf_alloc(int struct_size, int buffer_size); 377 extern void _nss_XbyY_buf_free(nss_XbyY_buf_t *); 378 379 #define NSS_XbyY_ALLOC(bufpp, str_size, buf_size) (\ 380 (*bufpp) == 0 \ 381 ? (*bufpp) = _nss_XbyY_buf_alloc(str_size, buf_size) \ 382 : (*bufpp)) 383 384 #define NSS_XbyY_FREE(bufpp) (_nss_XbyY_buf_free(*bufpp), (*bufpp) = 0) 385 386 /* 387 * The nss_XbyY_args_t struct contains all the information passed between 388 * frontends and backends for the getXbyY_r() and getXent() routines, 389 * including an nss_XbyY_buf_t and the lookup key (unused for getXXXent_r). 390 * 391 * The (*str2ent)() member converts a single XXXent from ASCII text to the 392 * appropriate struct, storing any pointer data (strings, in_addrs, arrays 393 * of these) in the buffer. The ASCII text is a counted string (*not* a 394 * zero-terminated string) whose length is specified by the instr_len 395 * parameter. The text is found at the address specified by instr and 396 * the string is treated as readonly. buffer and instr must be non- 397 * intersecting memory areas. 398 * 399 * With the exception of passwd, shadow and group, the text form for these 400 * databases allows trailing comments and arbitrary whitespace. The 401 * corresponding str2ent routine assumes that comments, leading whitespace 402 * and trailing whitespace have been stripped (and thus assumes that entries 403 * consisting only of these have been discarded). 404 * 405 * The text entries for "rpc" and for the databases described in <netdb.h> 406 * follow a common format (a canonical name with a possibly empty list 407 * of aliases, and some other value), albeit with minor variations. 408 * The function _nss_netdb_aliases() does most of the generic work involved 409 * in parsing and marshalling these into the buffer. 410 */ 411 412 typedef union nss_XbyY_key { /* No tag; backend should know what to expect */ 413 uid_t uid; 414 gid_t gid; 415 projid_t projid; 416 const char *name; 417 int number; 418 struct { 419 int net; 420 int type; 421 } netaddr; 422 struct { 423 const char *addr; 424 int len; 425 int type; 426 } hostaddr; 427 struct { 428 union { 429 const char *name; 430 int port; 431 } serv; 432 const char *proto; 433 } serv; 434 void *ether; 435 struct { 436 const char *name; 437 const char *keytype; 438 } pkey; 439 struct { 440 const char *name; 441 int af_family; 442 int flags; 443 } ipnode; 444 void *attrp; /* for the new attr databases */ 445 } nss_XbyY_key_t; 446 447 448 typedef int (*nss_key2str_t)(void *buffer, size_t buflen, 449 nss_XbyY_key_t *key, size_t *len); 450 451 452 typedef struct nss_XbyY_args { 453 454 /* IN */ 455 nss_XbyY_buf_t buf; 456 int stayopen; 457 /* 458 * Support for setXXXent(stayopen) 459 * Used only in hosts, protocols, 460 * networks, rpc, and services. 461 */ 462 nss_str2ent_t str2ent; 463 union nss_XbyY_key key; 464 465 /* OUT */ 466 void *returnval; 467 int erange; 468 int h_errno; /* For gethost*_r() */ 469 nss_status_t status; /* from the backend last called */ 470 /* NSS2 */ 471 nss_key2str_t key2str; /* IN */ 472 size_t returnlen; /* OUT */ 473 474 /* NSCD/DOOR data */ 475 476 /* ... buffer arena follows... */ 477 } nss_XbyY_args_t; 478 479 480 481 /* 482 * nss/nscd v2 interface, packed buffer format 483 * 484 * A key component of the v2 name service switch is the redirection 485 * of all activity to nscd for actual processing. In the original 486 * switch most activity took place in each application, and the nscd 487 * cache component was an add-on optional interface. 488 * 489 * The nscd v1 format was a completely private interface that 490 * implemented specific bufferiing formats on a per getXbyY API basis. 491 * 492 * The nss/nscd v2 interface uses a common header and commonalizes 493 * the buffering format as consistently as possible. The general rule 494 * of thumb is that backends are required to assemble their results in 495 * "files based" format [IE the format used on a per result basis as 496 * returned by the files backend] and then call the standard str2ent 497 * interface. This is the original intended design as used in the files 498 * and nis backends. 499 * 500 * The benefit of this is that the application side library can assemble 501 * a request and provide a header and a variable length result buffer via 502 * a doors API, and then the nscd side switch can assemble a a getXbyY 503 * request providing the result buffer and a str2ent function that copies 504 * but does not unpack the result. 505 * 506 * This results is returned back via the door, and unpacked using the 507 * native library side str2ent interface. 508 * 509 * Additionally, the common header allows extensibility to add new 510 * getXbyYs, putXbyYs or other maintenance APIs to/from nscd without 511 * changing the existing "old style" backend interfaces. 512 * 513 * Finally new style getXbyY, putXbyY and backend interfaces can be 514 * by adding new operation requests to the header, while old style 515 * backwards compatability. 516 */ 517 518 /* 519 * nss/nscd v2 callnumber definitions 520 */ 521 522 /* 523 * callnumbers are separated by categories, such as: 524 * application to nscd requests, nscd to nscd requests, 525 * smf to nscd requests, etc. 526 */ 527 528 #define NSCDV2CATMASK (0xFF000000) 529 #define NSCDV2CALLMASK (0x00FFFFFF) 530 531 /* 532 * nss/nscd v2 categories 533 */ 534 535 #define NSCD_CALLCAT_APP ('a'<<24) 536 #define NSCD_CALLCAT_N2N ('n'<<24) 537 538 /* nscd v2 app-> nscd callnumbers */ 539 540 #define NSCD_SEARCH (NSCD_CALLCAT_APP|0x01) 541 #define NSCD_SETENT (NSCD_CALLCAT_APP|0x02) 542 #define NSCD_GETENT (NSCD_CALLCAT_APP|0x03) 543 #define NSCD_ENDENT (NSCD_CALLCAT_APP|0x04) 544 #define NSCD_PUT (NSCD_CALLCAT_APP|0x05) 545 #define NSCD_GETHINTS (NSCD_CALLCAT_APP|0x06) 546 547 /* nscd v2 SETENT cookie markers */ 548 549 #define NSCD_NEW_COOKIE 0 550 #define NSCD_LOCAL_COOKIE 1 551 552 /* nscd v2 header revision */ 553 /* treated as 0xMMMMmmmm MMMM - Major Rev, mmmm - Minor Rev */ 554 555 #define NSCD_HEADER_REV 0x00020000 556 557 /* 558 * ptr/uint data type used to calculate shared nscd buffer struct sizes 559 * sizes/offsets are arbitrarily limited to 32 bits for 32/64 compatibility 560 * datatype is 64 bits for possible pointer storage and future use 561 */ 562 563 typedef uint64_t nssuint_t; 564 565 /* 566 * nscd v2 buffer layout overview 567 * 568 * The key interface to nscd moving forward is the doors interface 569 * between applications and nscd (NSCD_CALLCAT_APP), and nscd and 570 * it's children (NSCD_CALLCAT_N2N). 571 * 572 * Regardless of the interface used, the buffer layout is consistent. 573 * The General Layout is: 574 * [nss_pheader_t][IN key][OUT data results]{extend results} 575 * 576 * The header (nss_pheader_t) remains constant. 577 * Keys and key layouts vary between call numbers/requests 578 * NSCD_CALLCAT_APP use key layouts mimics/defines in nss_dbdefs.h 579 * NSCD_CALLCAT_NSN use layouts defined by nscd headers 580 * Data and data results vary between results 581 * NSCD_CALLCAT_APP return "file standard format" output buffers 582 * NSCD_CALLCAT_NSN return data defined by nscd headers 583 * extended results are optional and vary 584 * 585 */ 586 587 /* 588 * nss_pheader_t -- buffer header structure that contains switch data 589 * "packed" by the client into a buffer suitable for transport over 590 * nscd's door, and that can be unpacked into a native form within 591 * nscd's switch. Capable of packing and unpacking data ans results. 592 * 593 * NSCD_HEADER_REV: 0x00020000 16 x uint64 = (128 byte header) 594 */ 595 596 typedef struct { 597 uint32_t nsc_callnumber; /* packed buffer request */ 598 uint32_t nss_dbop; /* old nss dbop */ 599 uint32_t p_ruid; /* real uid */ 600 uint32_t p_euid; /* effective uid */ 601 uint32_t p_version; /* 0xMMMMmmmm Major/minor */ 602 uint32_t p_status; /* nss_status_t */ 603 uint32_t p_errno; /* errno */ 604 uint32_t p_herrno; /* h_errno */ 605 nssuint_t libpriv; /* reserved (for lib/client) */ 606 nssuint_t pbufsiz; /* buffer size */ 607 nssuint_t dbd_off; /* IN: db desc off */ 608 nssuint_t dbd_len; /* IN: db desc len */ 609 nssuint_t key_off; /* IN: key off */ 610 nssuint_t key_len; /* IN: key len */ 611 nssuint_t data_off; /* OUT: data off */ 612 nssuint_t data_len; /* OUT: data len */ 613 nssuint_t ext_off; /* OUT: extended results off */ 614 nssuint_t ext_len; /* OUT: extended results len */ 615 nssuint_t nscdpriv; /* reserved (for nscd) */ 616 nssuint_t reserved1; /* reserved (TBD) */ 617 } nss_pheader_t; 618 619 /* 620 * nss_pnetgr_t -- packed offset structure for holding keys used 621 * by innetgr (__multi_innetgr) key 622 * Key format is: 623 * nss_pnetgr_t 624 * (nssuint_t)[machine_argc] offsets to strings 625 * (nssuint_t)[user_argc] offsets to strings 626 * (nssuint_t)[domain_argc] offsets to strings 627 * (nssuint_t)[groups_argc] offsets to strings 628 * machine,user,domain,groups strings 629 */ 630 631 typedef struct { 632 uint32_t machine_argc; 633 uint32_t user_argc; 634 uint32_t domain_argc; 635 uint32_t groups_argc; 636 nssuint_t machine_offv; 637 nssuint_t user_offv; 638 nssuint_t domain_offv; 639 nssuint_t groups_offv; 640 } nss_pnetgr_t; 641 642 643 /* status returned by the str2ent parsing routines */ 644 #define NSS_STR_PARSE_SUCCESS 0 645 #define NSS_STR_PARSE_PARSE 1 646 #define NSS_STR_PARSE_ERANGE 2 647 648 #define NSS_XbyY_INIT(str, res, bufp, len, func) (\ 649 (str)->buf.result = (res), \ 650 (str)->buf.buffer = (bufp), \ 651 (str)->buf.buflen = (len), \ 652 (str)->stayopen = 0, \ 653 (str)->str2ent = (func), \ 654 (str)->key2str = NULL, \ 655 (str)->returnval = 0, \ 656 (str)->returnlen = 0, \ 657 (str)->h_errno = 0, \ 658 (str)->erange = 0) 659 660 #define NSS_XbyY_INIT_EXT(str, res, bufp, len, func, kfunc) (\ 661 (str)->buf.result = (res), \ 662 (str)->buf.buffer = (bufp), \ 663 (str)->buf.buflen = (len), \ 664 (str)->stayopen = 0, \ 665 (str)->str2ent = (func), \ 666 (str)->key2str = (kfunc), \ 667 (str)->returnval = 0, \ 668 (str)->returnlen = 0, \ 669 (str)->h_errno = 0, \ 670 (str)->erange = 0) 671 672 #define NSS_XbyY_FINI(str) (\ 673 (str)->returnval == 0 && (str)->erange && (errno = ERANGE), \ 674 (str)->returnval) 675 676 #define NSS_PACKED_CRED_CHECK(buf, ruid, euid) (\ 677 ((nss_pheader_t *)(buf))->p_ruid == (ruid) && \ 678 ((nss_pheader_t *)(buf))->p_euid == (euid)) 679 680 extern char **_nss_netdb_aliases(const char *, int, char *, int); 681 extern nss_status_t nss_default_key2str(void *, size_t, nss_XbyY_args_t *, 682 const char *, int, size_t *); 683 extern nss_status_t nss_packed_arg_init(void *, size_t, nss_db_root_t *, 684 nss_db_initf_t *, int *, 685 nss_XbyY_args_t *); 686 extern nss_status_t nss_packed_context_init(void *, size_t, nss_db_root_t *, 687 nss_db_initf_t *, nss_getent_t **, 688 nss_XbyY_args_t *); 689 extern void nss_packed_set_status(void *, size_t, nss_status_t, 690 nss_XbyY_args_t *); 691 extern nss_status_t nss_packed_getkey(void *, size_t, char **, int *, 692 nss_XbyY_args_t *); 693 694 /* 695 * nss_dbop_t values for searches with various keys; values for 696 * destructor/endent/setent/getent are defined in <nss_common.h> 697 */ 698 699 /* 700 * These are part of the "Over the wire" IE app->nscd getXbyY 701 * op for well known getXbyY's. Cannot use NSS_DBOP_X_Y directly 702 * because NSS_DBOP_next_iter is NOT an incrementing counter value 703 * it's a starting offset into an array value. 704 */ 705 706 #define NSS_DBOP_X(x) ((x)<<16) 707 #define NSS_DBOP_XY(x, y) ((x)|(y)) 708 709 #define NSS_DBOP_ALIASES NSS_DBOP_X(1) 710 #define NSS_DBOP_AUTOMOUNT NSS_DBOP_X(2) 711 #define NSS_DBOP_BOOTPARAMS NSS_DBOP_X(3) 712 #define NSS_DBOP_ETHERS NSS_DBOP_X(4) 713 #define NSS_DBOP_GROUP NSS_DBOP_X(5) 714 #define NSS_DBOP_HOSTS NSS_DBOP_X(6) 715 #define NSS_DBOP_IPNODES NSS_DBOP_X(7) 716 #define NSS_DBOP_NETGROUP NSS_DBOP_X(8) 717 #define NSS_DBOP_NETMASKS NSS_DBOP_X(9) 718 #define NSS_DBOP_NETWORKS NSS_DBOP_X(10) 719 #define NSS_DBOP_PASSWD NSS_DBOP_X(11) 720 #define NSS_DBOP_PRINTERS NSS_DBOP_X(12) 721 #define NSS_DBOP_PROJECT NSS_DBOP_X(13) 722 #define NSS_DBOP_PROTOCOLS NSS_DBOP_X(14) 723 #define NSS_DBOP_PUBLICKEY NSS_DBOP_X(15) 724 #define NSS_DBOP_RPC NSS_DBOP_X(16) 725 #define NSS_DBOP_SERVICES NSS_DBOP_X(17) 726 #define NSS_DBOP_AUDITUSER NSS_DBOP_X(18) 727 #define NSS_DBOP_AUTHATTR NSS_DBOP_X(19) 728 #define NSS_DBOP_EXECATTR NSS_DBOP_X(20) 729 #define NSS_DBOP_PROFATTR NSS_DBOP_X(21) 730 #define NSS_DBOP_USERATTR NSS_DBOP_X(22) 731 732 #define NSS_DBOP_GROUP_BYNAME (NSS_DBOP_next_iter) 733 #define NSS_DBOP_GROUP_BYGID (NSS_DBOP_GROUP_BYNAME + 1) 734 #define NSS_DBOP_GROUP_BYMEMBER (NSS_DBOP_GROUP_BYGID + 1) 735 736 #define NSS_DBOP_PASSWD_BYNAME (NSS_DBOP_next_iter) 737 #define NSS_DBOP_PASSWD_BYUID (NSS_DBOP_PASSWD_BYNAME + 1) 738 739 /* The "compat" backend requires that PASSWD_BYNAME == SHADOW_BYNAME */ 740 /* (it also requires that both use key.name to pass the username). */ 741 #define NSS_DBOP_SHADOW_BYNAME (NSS_DBOP_PASSWD_BYNAME) 742 743 #define NSS_DBOP_PROJECT_BYNAME (NSS_DBOP_next_iter) 744 #define NSS_DBOP_PROJECT_BYID (NSS_DBOP_PROJECT_BYNAME + 1) 745 746 #define NSS_DBOP_HOSTS_BYNAME (NSS_DBOP_next_iter) 747 #define NSS_DBOP_HOSTS_BYADDR (NSS_DBOP_HOSTS_BYNAME + 1) 748 749 #define NSS_DBOP_IPNODES_BYNAME (NSS_DBOP_next_iter) 750 #define NSS_DBOP_IPNODES_BYADDR (NSS_DBOP_IPNODES_BYNAME + 1) 751 752 /* 753 * NSS_DBOP_NAME_2ADDR 754 * NSS_DBOP_ADDR_2NAME 755 * : are defines for ipv6 api's 756 */ 757 758 #define NSS_DBOP_NAME_2ADDR (NSS_DBOP_next_ipv6_iter) 759 #define NSS_DBOP_ADDR_2NAME (NSS_DBOP_NAME_2ADDR + 1) 760 761 #define NSS_DBOP_RPC_BYNAME (NSS_DBOP_next_iter) 762 #define NSS_DBOP_RPC_BYNUMBER (NSS_DBOP_RPC_BYNAME + 1) 763 764 #define NSS_DBOP_NETWORKS_BYNAME (NSS_DBOP_next_iter) 765 #define NSS_DBOP_NETWORKS_BYADDR (NSS_DBOP_NETWORKS_BYNAME + 1) 766 767 #define NSS_DBOP_SERVICES_BYNAME (NSS_DBOP_next_iter) 768 #define NSS_DBOP_SERVICES_BYPORT (NSS_DBOP_SERVICES_BYNAME + 1) 769 770 #define NSS_DBOP_PROTOCOLS_BYNAME (NSS_DBOP_next_iter) 771 #define NSS_DBOP_PROTOCOLS_BYNUMBER (NSS_DBOP_PROTOCOLS_BYNAME + 1) 772 773 #define NSS_DBOP_ETHERS_HOSTTON (NSS_DBOP_next_noiter) 774 #define NSS_DBOP_ETHERS_NTOHOST (NSS_DBOP_ETHERS_HOSTTON + 1) 775 776 #define NSS_DBOP_BOOTPARAMS_BYNAME (NSS_DBOP_next_noiter) 777 #define NSS_DBOP_NETMASKS_BYNET (NSS_DBOP_next_noiter) 778 779 #define NSS_DBOP_PRINTERS_BYNAME (NSS_DBOP_next_iter) 780 781 /* 782 * The "real" backend for netgroup (__multi_innetgr, setnetgrent) 783 */ 784 #define NSS_DBOP_NETGROUP_IN (NSS_DBOP_next_iter) 785 #define NSS_DBOP_NETGROUP_SET (NSS_DBOP_NETGROUP_IN + 1) 786 787 /* 788 * The backend for getpublickey and getsecretkey (getkeys) 789 */ 790 #define NSS_DBOP_KEYS_BYNAME (NSS_DBOP_next_iter) 791 792 /* 793 * The pseudo-backend for netgroup (returned by setnetgrent) doesn't have 794 * any getXXXbyYYY operations, just the usual destr/end/set/get ops, 795 * so needs no definitions here. 796 */ 797 798 #define NSS_DBOP_ATTRDB_BYNAME (NSS_DBOP_next_iter) 799 800 #define NSS_DBOP_AUDITUSER_BYNAME NSS_DBOP_ATTRDB_BYNAME 801 #define NSS_DBOP_AUTHATTR_BYNAME NSS_DBOP_ATTRDB_BYNAME 802 #define NSS_DBOP_EXECATTR_BYNAME NSS_DBOP_ATTRDB_BYNAME 803 #define NSS_DBOP_EXECATTR_BYID (NSS_DBOP_EXECATTR_BYNAME + 1) 804 #define NSS_DBOP_EXECATTR_BYNAMEID (NSS_DBOP_EXECATTR_BYID + 1) 805 #define NSS_DBOP_PROFATTR_BYNAME NSS_DBOP_ATTRDB_BYNAME 806 #define NSS_DBOP_USERATTR_BYNAME NSS_DBOP_ATTRDB_BYNAME 807 808 #define NSS_DBOP_TSOL_TP_BYNAME (NSS_DBOP_next_iter) 809 #define NSS_DBOP_TSOL_RH_BYADDR (NSS_DBOP_next_iter) 810 #define NSS_DBOP_TSOL_ZC_BYNAME (NSS_DBOP_next_iter) 811 812 /* 813 * Used all over in the switch code. The best home for it I can think of. 814 * Power-of-two alignments only. 815 */ 816 #define ROUND_DOWN(n, align) (((uintptr_t)n) & ~((align) - 1l)) 817 #define ROUND_UP(n, align) ROUND_DOWN(((uintptr_t)n) + (align) - 1l, \ 818 (align)) 819 820 #ifdef __cplusplus 821 } 822 #endif 823 824 #endif /* _NSS_DBDEFS_H */ 825