| File: | src/lib/libc/gen/getpwent.c |
| Warning: | line 418, column 3 Array subscript is undefined |
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| 1 | /* $OpenBSD: getpwent.c,v 1.64 2021/12/07 18:13:45 deraadt Exp $ */ | |||
| 2 | /* | |||
| 3 | * Copyright (c) 2008 Theo de Raadt | |||
| 4 | * Copyright (c) 1988, 1993 | |||
| 5 | * The Regents of the University of California. All rights reserved. | |||
| 6 | * Portions Copyright (c) 1994, 1995, 1996, Jason Downs. All rights reserved. | |||
| 7 | * | |||
| 8 | * Redistribution and use in source and binary forms, with or without | |||
| 9 | * modification, are permitted provided that the following conditions | |||
| 10 | * are met: | |||
| 11 | * 1. Redistributions of source code must retain the above copyright | |||
| 12 | * notice, this list of conditions and the following disclaimer. | |||
| 13 | * 2. Redistributions in binary form must reproduce the above copyright | |||
| 14 | * notice, this list of conditions and the following disclaimer in the | |||
| 15 | * documentation and/or other materials provided with the distribution. | |||
| 16 | * 3. Neither the name of the University nor the names of its contributors | |||
| 17 | * may be used to endorse or promote products derived from this software | |||
| 18 | * without specific prior written permission. | |||
| 19 | * | |||
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |||
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |||
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||
| 30 | * SUCH DAMAGE. | |||
| 31 | */ | |||
| 32 | ||||
| 33 | #include <sys/types.h> | |||
| 34 | #include <sys/mman.h> | |||
| 35 | #include <fcntl.h> | |||
| 36 | #include <db.h> | |||
| 37 | #include <syslog.h> | |||
| 38 | #include <pwd.h> | |||
| 39 | #include <errno(*__errno()).h> | |||
| 40 | #include <unistd.h> | |||
| 41 | #include <stdbool.h> | |||
| 42 | #include <stdlib.h> | |||
| 43 | #include <string.h> | |||
| 44 | #include <limits.h> | |||
| 45 | #include <netgroup.h> | |||
| 46 | #ifdef YP1 | |||
| 47 | #include <stdio.h> | |||
| 48 | #include <rpc/rpc.h> | |||
| 49 | #include <rpcsvc/yp.h> | |||
| 50 | #include <rpcsvc/ypclnt.h> | |||
| 51 | #include "ypinternal.h" | |||
| 52 | #include "ypexclude.h" | |||
| 53 | #endif | |||
| 54 | #include "thread_private.h" | |||
| 55 | ||||
| 56 | #define MINIMUM(a, b)(((a) < (b)) ? (a) : (b)) (((a) < (b)) ? (a) : (b)) | |||
| 57 | ||||
| 58 | struct pw_storage { | |||
| 59 | struct passwd pw; | |||
| 60 | uid_t uid; | |||
| 61 | char name[_PW_NAME_LEN31 + 1]; | |||
| 62 | char pwbuf[_PW_BUF_LEN1024]; | |||
| 63 | }; | |||
| 64 | ||||
| 65 | _THREAD_PRIVATE_KEY(pw)static void *_thread_tagname_pw; | |||
| 66 | ||||
| 67 | static DB *_pw_db; /* password database */ | |||
| 68 | ||||
| 69 | /* mmap'd password storage */ | |||
| 70 | static struct pw_storage *_pw_storage = MAP_FAILED((void *)-1); | |||
| 71 | ||||
| 72 | /* Following are used only by setpwent(), getpwent(), and endpwent() */ | |||
| 73 | static int _pw_keynum; /* key counter */ | |||
| 74 | static int _pw_stayopen; /* keep fd's open */ | |||
| 75 | static int _pw_flags; /* password flags */ | |||
| 76 | ||||
| 77 | static int __hashpw(DBT *, char *buf, size_t buflen, struct passwd *, int *); | |||
| 78 | static int __initdb(int); | |||
| 79 | static struct passwd *_pwhashbyname(const char *name, char *buf, | |||
| 80 | size_t buflen, struct passwd *pw, int *); | |||
| 81 | static struct passwd *_pwhashbyuid(uid_t uid, char *buf, | |||
| 82 | size_t buflen, struct passwd *pw, int *); | |||
| 83 | ||||
| 84 | #ifdef YP1 | |||
| 85 | static char *__ypdomain; | |||
| 86 | ||||
| 87 | /* Following are used only by setpwent(), getpwent(), and endpwent() */ | |||
| 88 | enum _ypmode { YPMODE_NONE, YPMODE_FULL, YPMODE_USER, YPMODE_NETGRP }; | |||
| 89 | static enum _ypmode __ypmode; | |||
| 90 | static char *__ypcurrent; | |||
| 91 | static int __ypcurrentlen; | |||
| 92 | static int __yp_pw_flags; | |||
| 93 | static int __getpwent_has_yppw = -1; | |||
| 94 | static struct _ypexclude *__ypexhead; | |||
| 95 | ||||
| 96 | static int __has_yppw(void); | |||
| 97 | static int __has_ypmaster(void); | |||
| 98 | static int __ypparse(struct passwd *pw, char *s, int); | |||
| 99 | ||||
| 100 | #define LOOKUP_BYNAME0 0 | |||
| 101 | #define LOOKUP_BYUID1 1 | |||
| 102 | static struct passwd *__yppwlookup(int, char *, uid_t, struct passwd *, | |||
| 103 | char *, size_t, int *); | |||
| 104 | ||||
| 105 | /* macro for deciding which YP maps to use. */ | |||
| 106 | #define PASSWD_BYNAME(__has_ypmaster() ? "master.passwd.byname" : "passwd.byname") \ | |||
| 107 | (__has_ypmaster() ? "master.passwd.byname" : "passwd.byname") | |||
| 108 | #define PASSWD_BYUID(__has_ypmaster() ? "master.passwd.byuid" : "passwd.byuid") \ | |||
| 109 | (__has_ypmaster() ? "master.passwd.byuid" : "passwd.byuid") | |||
| 110 | ||||
| 111 | static struct passwd *__ypproto; | |||
| 112 | ||||
| 113 | static void __ypproto_set(struct passwd *, struct pw_storage *, int, int *); | |||
| 114 | ||||
| 115 | static void | |||
| 116 | __ypproto_set(struct passwd *pw, struct pw_storage *buf, int flags, | |||
| 117 | int *yp_pw_flagsp) | |||
| 118 | { | |||
| 119 | char *ptr = buf->pwbuf; | |||
| 120 | __ypproto = &buf->pw; | |||
| 121 | ||||
| 122 | /* name */ | |||
| 123 | if (pw->pw_name && (pw->pw_name)[0]) { | |||
| 124 | bcopy(pw->pw_name, ptr, strlen(pw->pw_name) + 1); | |||
| 125 | __ypproto->pw_name = ptr; | |||
| 126 | ptr += (strlen(pw->pw_name) + 1); | |||
| 127 | } else | |||
| 128 | __ypproto->pw_name = NULL((void *)0); | |||
| 129 | ||||
| 130 | /* password */ | |||
| 131 | if (pw->pw_passwd && (pw->pw_passwd)[0]) { | |||
| 132 | bcopy(pw->pw_passwd, ptr, strlen(pw->pw_passwd) + 1); | |||
| 133 | __ypproto->pw_passwd = ptr; | |||
| 134 | ptr += (strlen(pw->pw_passwd) + 1); | |||
| 135 | } else | |||
| 136 | __ypproto->pw_passwd = NULL((void *)0); | |||
| 137 | ||||
| 138 | /* uid */ | |||
| 139 | __ypproto->pw_uid = pw->pw_uid; | |||
| 140 | ||||
| 141 | /* gid */ | |||
| 142 | __ypproto->pw_gid = pw->pw_gid; | |||
| 143 | ||||
| 144 | /* change (ignored anyway) */ | |||
| 145 | __ypproto->pw_change = pw->pw_change; | |||
| 146 | ||||
| 147 | /* class (ignored anyway) */ | |||
| 148 | __ypproto->pw_class = ""; | |||
| 149 | ||||
| 150 | /* gecos */ | |||
| 151 | if (pw->pw_gecos && (pw->pw_gecos)[0]) { | |||
| 152 | bcopy(pw->pw_gecos, ptr, strlen(pw->pw_gecos) + 1); | |||
| 153 | __ypproto->pw_gecos = ptr; | |||
| 154 | ptr += (strlen(pw->pw_gecos) + 1); | |||
| 155 | } else | |||
| 156 | __ypproto->pw_gecos = NULL((void *)0); | |||
| 157 | ||||
| 158 | /* dir */ | |||
| 159 | if (pw->pw_dir && (pw->pw_dir)[0]) { | |||
| 160 | bcopy(pw->pw_dir, ptr, strlen(pw->pw_dir) + 1); | |||
| 161 | __ypproto->pw_dir = ptr; | |||
| 162 | ptr += (strlen(pw->pw_dir) + 1); | |||
| 163 | } else | |||
| 164 | __ypproto->pw_dir = NULL((void *)0); | |||
| 165 | ||||
| 166 | /* shell */ | |||
| 167 | if (pw->pw_shell && (pw->pw_shell)[0]) { | |||
| 168 | bcopy(pw->pw_shell, ptr, strlen(pw->pw_shell) + 1); | |||
| 169 | __ypproto->pw_shell = ptr; | |||
| 170 | ptr += (strlen(pw->pw_shell) + 1); | |||
| 171 | } else | |||
| 172 | __ypproto->pw_shell = NULL((void *)0); | |||
| 173 | ||||
| 174 | /* expire (ignored anyway) */ | |||
| 175 | __ypproto->pw_expire = pw->pw_expire; | |||
| 176 | ||||
| 177 | /* flags */ | |||
| 178 | *yp_pw_flagsp = flags; | |||
| 179 | } | |||
| 180 | ||||
| 181 | static int | |||
| 182 | __ypparse(struct passwd *pw, char *s, int yp_pw_flags) | |||
| 183 | { | |||
| 184 | char *bp, *cp, *endp; | |||
| 185 | u_long ul; | |||
| 186 | int count = 0; | |||
| 187 | ||||
| 188 | /* count the colons. */ | |||
| 189 | bp = s; | |||
| 190 | while (*bp != '\0') { | |||
| 191 | if (*bp++ == ':') | |||
| 192 | count++; | |||
| 193 | } | |||
| 194 | ||||
| 195 | /* since this is currently using strsep(), parse it first */ | |||
| 196 | bp = s; | |||
| 197 | pw->pw_name = strsep(&bp, ":\n"); | |||
| 198 | pw->pw_passwd = strsep(&bp, ":\n"); | |||
| 199 | if (!(cp = strsep(&bp, ":\n"))) | |||
| 200 | return (1); | |||
| 201 | ul = strtoul(cp, &endp, 10); | |||
| 202 | if (endp == cp || *endp != '\0' || ul >= UID_MAX(2147483647 *2U +1U)) | |||
| 203 | return (1); | |||
| 204 | pw->pw_uid = (uid_t)ul; | |||
| 205 | if (!(cp = strsep(&bp, ":\n"))) | |||
| 206 | return (1); | |||
| 207 | ul = strtoul(cp, &endp, 10); | |||
| 208 | if (endp == cp || *endp != '\0' || ul >= GID_MAX(2147483647 *2U +1U)) | |||
| 209 | return (1); | |||
| 210 | pw->pw_gid = (gid_t)ul; | |||
| 211 | if (count == 9) { | |||
| 212 | long l; | |||
| 213 | ||||
| 214 | /* If the ypserv gave us all the fields, use them. */ | |||
| 215 | pw->pw_class = strsep(&bp, ":\n"); | |||
| 216 | if (!(cp = strsep(&bp, ":\n"))) | |||
| 217 | return (1); | |||
| 218 | l = strtol(cp, &endp, 10); | |||
| 219 | if (endp == cp || *endp != '\0' || l >= INT_MAX2147483647 || l <= INT_MIN(-2147483647 -1)) | |||
| 220 | return (1); | |||
| 221 | pw->pw_change = (time_t)l; | |||
| 222 | if (!(cp = strsep(&bp, ":\n"))) | |||
| 223 | return (1); | |||
| 224 | l = strtol(cp, &endp, 10); | |||
| 225 | if (endp == cp || *endp != '\0' || l >= INT_MAX2147483647 || l <= INT_MIN(-2147483647 -1)) | |||
| 226 | return (1); | |||
| 227 | pw->pw_expire = (time_t)l; | |||
| 228 | } else { | |||
| 229 | /* ..else it is a normal ypserv. */ | |||
| 230 | pw->pw_class = ""; | |||
| 231 | pw->pw_change = 0; | |||
| 232 | pw->pw_expire = 0; | |||
| 233 | } | |||
| 234 | pw->pw_gecos = strsep(&bp, ":\n"); | |||
| 235 | pw->pw_dir = strsep(&bp, ":\n"); | |||
| 236 | pw->pw_shell = strsep(&bp, ":\n"); | |||
| 237 | ||||
| 238 | /* now let the prototype override, if set. */ | |||
| 239 | if (__ypproto) { | |||
| 240 | if (!(yp_pw_flags & _PASSWORD_NOUID0x01)) | |||
| 241 | pw->pw_uid = __ypproto->pw_uid; | |||
| 242 | if (!(yp_pw_flags & _PASSWORD_NOGID0x02)) | |||
| 243 | pw->pw_gid = __ypproto->pw_gid; | |||
| 244 | if (__ypproto->pw_gecos) | |||
| 245 | pw->pw_gecos = __ypproto->pw_gecos; | |||
| 246 | if (__ypproto->pw_dir) | |||
| 247 | pw->pw_dir = __ypproto->pw_dir; | |||
| 248 | if (__ypproto->pw_shell) | |||
| 249 | pw->pw_shell = __ypproto->pw_shell; | |||
| 250 | } | |||
| 251 | return (0); | |||
| 252 | } | |||
| 253 | #endif | |||
| 254 | ||||
| 255 | static struct passwd * | |||
| 256 | __get_pw_buf(char **bufp, size_t *buflenp, uid_t uid, const char *name) | |||
| 257 | { | |||
| 258 | bool_Bool remap = true1; | |||
| 259 | ||||
| 260 | /* Unmap the old buffer unless we are looking up the same uid/name */ | |||
| 261 | if (_pw_storage != MAP_FAILED((void *)-1)) { | |||
| 262 | if (name != NULL((void *)0)) { | |||
| 263 | if (strcmp(_pw_storage->name, name) == 0) { | |||
| 264 | #ifdef PWDEBUG | |||
| 265 | struct syslog_data sdata = SYSLOG_DATA_INIT{0, (const char *)0, (1<<3), 0xff}; | |||
| 266 | syslog_r(LOG_CRIT2 | LOG_CONS0x02, &sdata, | |||
| 267 | "repeated passwd lookup of user \"%s\"", | |||
| 268 | name); | |||
| 269 | #endif | |||
| 270 | remap = false0; | |||
| 271 | } | |||
| 272 | } else if (uid != (uid_t)-1) { | |||
| 273 | if (_pw_storage->uid == uid) { | |||
| 274 | #ifdef PWDEBUG | |||
| 275 | struct syslog_data sdata = SYSLOG_DATA_INIT{0, (const char *)0, (1<<3), 0xff}; | |||
| 276 | syslog_r(LOG_CRIT2 | LOG_CONS0x02, &sdata, | |||
| 277 | "repeated passwd lookup of uid %u", | |||
| 278 | uid); | |||
| 279 | #endif | |||
| 280 | remap = false0; | |||
| 281 | } | |||
| 282 | } | |||
| 283 | if (remap) | |||
| 284 | munmap(_pw_storage, sizeof(*_pw_storage)); | |||
| 285 | } | |||
| 286 | ||||
| 287 | if (remap) { | |||
| 288 | _pw_storage = mmap(NULL((void *)0), sizeof(*_pw_storage), | |||
| 289 | PROT_READ0x01|PROT_WRITE0x02, MAP_PRIVATE0x0002|MAP_ANON0x1000, -1, 0); | |||
| 290 | if (_pw_storage == MAP_FAILED((void *)-1)) | |||
| 291 | return NULL((void *)0); | |||
| 292 | if (name != NULL((void *)0)) | |||
| 293 | strlcpy(_pw_storage->name, name, sizeof(_pw_storage->name)); | |||
| 294 | _pw_storage->uid = uid; | |||
| 295 | } | |||
| 296 | ||||
| 297 | *bufp = _pw_storage->pwbuf; | |||
| 298 | *buflenp = sizeof(_pw_storage->pwbuf); | |||
| 299 | return &_pw_storage->pw; | |||
| 300 | } | |||
| 301 | ||||
| 302 | struct passwd * | |||
| 303 | getpwent(void) | |||
| 304 | { | |||
| 305 | #ifdef YP1 | |||
| 306 | static char *name = NULL((void *)0); | |||
| 307 | char *map; | |||
| 308 | #endif | |||
| 309 | char bf[1 + sizeof(_pw_keynum)]; | |||
| 310 | struct passwd *pw, *ret = NULL((void *)0); | |||
| 311 | char *pwbuf; | |||
| 312 | size_t buflen; | |||
| 313 | DBT key; | |||
| 314 | ||||
| 315 | _THREAD_PRIVATE_MUTEX_LOCK(pw)do { if (_thread_cb.tc_tag_lock != ((void *)0)) _thread_cb.tc_tag_lock (&(_thread_tagname_pw)); } while (0); | |||
| ||||
| 316 | if (!_pw_db && !__initdb(0)) | |||
| 317 | goto done; | |||
| 318 | ||||
| 319 | /* Allocate space for struct and strings, unmapping the old. */ | |||
| 320 | if ((pw = __get_pw_buf(&pwbuf, &buflen, -1, NULL((void *)0))) == NULL((void *)0)) | |||
| 321 | goto done; | |||
| 322 | ||||
| 323 | #ifdef YP1 | |||
| 324 | map = PASSWD_BYNAME(__has_ypmaster() ? "master.passwd.byname" : "passwd.byname"); | |||
| 325 | ||||
| 326 | if (__getpwent_has_yppw == -1) | |||
| 327 | __getpwent_has_yppw = __has_yppw(); | |||
| 328 | ||||
| 329 | again: | |||
| 330 | if (__getpwent_has_yppw && (__ypmode != YPMODE_NONE)) { | |||
| 331 | const char *user, *host, *dom; | |||
| 332 | int keylen, datalen, r, s; | |||
| 333 | char *key, *data = NULL((void *)0); | |||
| 334 | ||||
| 335 | if (!__ypdomain) { | |||
| 336 | if (_yp_check(&__ypdomain) == 0) { | |||
| 337 | __ypmode = YPMODE_NONE; | |||
| 338 | goto again; | |||
| 339 | } | |||
| 340 | } | |||
| 341 | switch (__ypmode) { | |||
| 342 | case YPMODE_FULL: | |||
| 343 | if (__ypcurrent) { | |||
| 344 | r = yp_next(__ypdomain, map, | |||
| 345 | __ypcurrent, __ypcurrentlen, | |||
| 346 | &key, &keylen, &data, &datalen); | |||
| 347 | free(__ypcurrent); | |||
| 348 | __ypcurrent = NULL((void *)0); | |||
| 349 | if (r != 0) { | |||
| 350 | __ypmode = YPMODE_NONE; | |||
| 351 | free(data); | |||
| 352 | goto again; | |||
| 353 | } | |||
| 354 | __ypcurrent = key; | |||
| 355 | __ypcurrentlen = keylen; | |||
| 356 | } else { | |||
| 357 | r = yp_first(__ypdomain, map, | |||
| 358 | &__ypcurrent, &__ypcurrentlen, | |||
| 359 | &data, &datalen); | |||
| 360 | if (r != 0 || | |||
| 361 | __ypcurrentlen > buflen) { | |||
| 362 | __ypmode = YPMODE_NONE; | |||
| 363 | free(data); | |||
| 364 | goto again; | |||
| 365 | } | |||
| 366 | } | |||
| 367 | bcopy(data, pwbuf, datalen); | |||
| 368 | free(data); | |||
| 369 | break; | |||
| 370 | case YPMODE_NETGRP: | |||
| 371 | s = getnetgrent(&host, &user, &dom); | |||
| 372 | if (s == 0) { /* end of group */ | |||
| 373 | endnetgrent(); | |||
| 374 | __ypmode = YPMODE_NONE; | |||
| 375 | goto again; | |||
| 376 | } | |||
| 377 | if (user && *user) { | |||
| 378 | r = yp_match(__ypdomain, map, | |||
| 379 | user, strlen(user), &data, &datalen); | |||
| 380 | } else | |||
| 381 | goto again; | |||
| 382 | if (r != 0 || | |||
| 383 | __ypcurrentlen > buflen) { | |||
| 384 | /* | |||
| 385 | * if the netgroup is invalid, keep looking | |||
| 386 | * as there may be valid users later on. | |||
| 387 | */ | |||
| 388 | free(data); | |||
| 389 | goto again; | |||
| 390 | } | |||
| 391 | bcopy(data, pwbuf, datalen); | |||
| 392 | free(data); | |||
| 393 | break; | |||
| 394 | case YPMODE_USER: | |||
| 395 | if (name) { | |||
| 396 | r = yp_match(__ypdomain, map, | |||
| 397 | name, strlen(name), &data, &datalen); | |||
| 398 | __ypmode = YPMODE_NONE; | |||
| 399 | free(name); | |||
| 400 | name = NULL((void *)0); | |||
| 401 | if (r != 0 || | |||
| 402 | __ypcurrentlen > buflen) { | |||
| 403 | free(data); | |||
| 404 | goto again; | |||
| 405 | } | |||
| 406 | bcopy(data, pwbuf, datalen); | |||
| 407 | free(data); | |||
| 408 | } else { /* XXX */ | |||
| 409 | __ypmode = YPMODE_NONE; | |||
| 410 | goto again; | |||
| 411 | } | |||
| 412 | break; | |||
| 413 | case YPMODE_NONE: | |||
| 414 | /* NOTREACHED */ | |||
| 415 | break; | |||
| 416 | } | |||
| 417 | ||||
| 418 | pwbuf[datalen] = '\0'; | |||
| ||||
| 419 | if (__ypparse(pw, pwbuf, __yp_pw_flags)) | |||
| 420 | goto again; | |||
| 421 | ret = pw; | |||
| 422 | goto done; | |||
| 423 | } | |||
| 424 | #endif | |||
| 425 | ||||
| 426 | ++_pw_keynum; | |||
| 427 | bf[0] = _PW_KEYBYNUM'2'; | |||
| 428 | bcopy((char *)&_pw_keynum, &bf[1], sizeof(_pw_keynum)); | |||
| 429 | key.data = (u_char *)bf; | |||
| 430 | key.size = 1 + sizeof(_pw_keynum); | |||
| 431 | if (__hashpw(&key, pwbuf, buflen, pw, &_pw_flags)) { | |||
| 432 | #ifdef YP1 | |||
| 433 | static struct pw_storage __yppbuf; | |||
| 434 | const char *user, *host, *dom; | |||
| 435 | ||||
| 436 | /* if we don't have YP at all, don't bother. */ | |||
| 437 | if (__getpwent_has_yppw) { | |||
| 438 | if (pw->pw_name[0] == '+') { | |||
| 439 | /* set the mode */ | |||
| 440 | switch (pw->pw_name[1]) { | |||
| 441 | case '\0': | |||
| 442 | __ypmode = YPMODE_FULL; | |||
| 443 | break; | |||
| 444 | case '@': | |||
| 445 | __ypmode = YPMODE_NETGRP; | |||
| 446 | setnetgrent(pw->pw_name + 2); | |||
| 447 | break; | |||
| 448 | default: | |||
| 449 | __ypmode = YPMODE_USER; | |||
| 450 | name = strdup(pw->pw_name + 1); | |||
| 451 | break; | |||
| 452 | } | |||
| 453 | ||||
| 454 | __ypproto_set(pw, &__yppbuf, _pw_flags, | |||
| 455 | &__yp_pw_flags); | |||
| 456 | goto again; | |||
| 457 | } else if (pw->pw_name[0] == '-') { | |||
| 458 | /* an attempted exclusion */ | |||
| 459 | switch (pw->pw_name[1]) { | |||
| 460 | case '\0': | |||
| 461 | break; | |||
| 462 | case '@': | |||
| 463 | setnetgrent(pw->pw_name + 2); | |||
| 464 | while (getnetgrent(&host, &user, &dom)) { | |||
| 465 | if (user && *user) | |||
| 466 | __ypexclude_add(&__ypexhead, | |||
| 467 | user); | |||
| 468 | } | |||
| 469 | endnetgrent(); | |||
| 470 | break; | |||
| 471 | default: | |||
| 472 | __ypexclude_add(&__ypexhead, | |||
| 473 | pw->pw_name + 1); | |||
| 474 | break; | |||
| 475 | } | |||
| 476 | goto again; | |||
| 477 | } | |||
| 478 | } | |||
| 479 | #endif | |||
| 480 | ret = pw; | |||
| 481 | goto done; | |||
| 482 | } | |||
| 483 | ||||
| 484 | done: | |||
| 485 | _THREAD_PRIVATE_MUTEX_UNLOCK(pw)do { if (_thread_cb.tc_tag_unlock != ((void *)0)) _thread_cb. tc_tag_unlock(&(_thread_tagname_pw)); } while (0); | |||
| 486 | return (ret); | |||
| 487 | } | |||
| 488 | ||||
| 489 | #ifdef YP1 | |||
| 490 | /* | |||
| 491 | * See if the YP token is in the database. Only works if pwd_mkdb knows | |||
| 492 | * about the token. | |||
| 493 | */ | |||
| 494 | static int | |||
| 495 | __has_yppw(void) | |||
| 496 | { | |||
| 497 | DBT key, data, pkey, pdata; | |||
| 498 | char bf[2]; | |||
| 499 | ||||
| 500 | key.data = (u_char *)_PW_YPTOKEN"__YP!"; | |||
| 501 | key.size = strlen(_PW_YPTOKEN"__YP!"); | |||
| 502 | ||||
| 503 | /* Pre-token database support. */ | |||
| 504 | bf[0] = _PW_KEYBYNAME'1'; | |||
| 505 | bf[1] = '+'; | |||
| 506 | pkey.data = (u_char *)bf; | |||
| 507 | pkey.size = sizeof(bf); | |||
| 508 | ||||
| 509 | if ((_pw_db->get)(_pw_db, &key, &data, 0) && | |||
| 510 | (_pw_db->get)(_pw_db, &pkey, &pdata, 0)) | |||
| 511 | return (0); /* No YP. */ | |||
| 512 | return (1); | |||
| 513 | } | |||
| 514 | ||||
| 515 | /* | |||
| 516 | * See if there's a master.passwd map. | |||
| 517 | */ | |||
| 518 | static int | |||
| 519 | __has_ypmaster(void) | |||
| 520 | { | |||
| 521 | int keylen, resultlen; | |||
| 522 | char *key, *result; | |||
| 523 | static int checked = -1; | |||
| 524 | static uid_t saved_uid, saved_euid; | |||
| 525 | uid_t uid = getuid(), euid = geteuid(); | |||
| 526 | ||||
| 527 | /* | |||
| 528 | * Do not recheck IFF the saved UID and the saved | |||
| 529 | * EUID are the same. In all other cases, recheck. | |||
| 530 | */ | |||
| 531 | if (checked != -1 && saved_uid == uid && saved_euid == euid) | |||
| 532 | return (checked); | |||
| 533 | ||||
| 534 | if (euid != 0) { | |||
| 535 | saved_uid = uid; | |||
| 536 | saved_euid = euid; | |||
| 537 | checked = 0; | |||
| 538 | return (checked); | |||
| 539 | } | |||
| 540 | ||||
| 541 | if (!__ypdomain) { | |||
| 542 | if (_yp_check(&__ypdomain) == 0) { | |||
| 543 | saved_uid = uid; | |||
| 544 | saved_euid = euid; | |||
| 545 | checked = 0; | |||
| 546 | return (checked); /* No domain. */ | |||
| 547 | } | |||
| 548 | } | |||
| 549 | ||||
| 550 | if (yp_first(__ypdomain, "master.passwd.byname", | |||
| 551 | &key, &keylen, &result, &resultlen)) { | |||
| 552 | saved_uid = uid; | |||
| 553 | saved_euid = euid; | |||
| 554 | checked = 0; | |||
| 555 | return (checked); | |||
| 556 | } | |||
| 557 | free(result); | |||
| 558 | free(key); | |||
| 559 | ||||
| 560 | saved_uid = uid; | |||
| 561 | saved_euid = euid; | |||
| 562 | checked = 1; | |||
| 563 | return (checked); | |||
| 564 | } | |||
| 565 | ||||
| 566 | static struct passwd * | |||
| 567 | __yppwlookup(int lookup, char *name, uid_t uid, struct passwd *pw, | |||
| 568 | char *buf, size_t buflen, int *flagsp) | |||
| 569 | { | |||
| 570 | char bf[1 + _PW_NAME_LEN31], *ypcurrent = NULL((void *)0), *map = NULL((void *)0); | |||
| 571 | int yp_pw_flags = 0, ypcurrentlen, r, s = -1, pw_keynum; | |||
| 572 | static struct pw_storage __yppbuf; | |||
| 573 | struct _ypexclude *ypexhead = NULL((void *)0); | |||
| 574 | const char *host, *user, *dom; | |||
| 575 | DBT key; | |||
| 576 | ||||
| 577 | for (pw_keynum = 1; pw_keynum; pw_keynum++) { | |||
| 578 | bf[0] = _PW_KEYBYNUM'2'; | |||
| 579 | bcopy((char *)&pw_keynum, &bf[1], sizeof(pw_keynum)); | |||
| 580 | key.data = (u_char *)bf; | |||
| 581 | key.size = 1 + sizeof(pw_keynum); | |||
| 582 | if (__hashpw(&key, buf, buflen, pw, flagsp) == 0) | |||
| 583 | break; | |||
| 584 | switch (pw->pw_name[0]) { | |||
| 585 | case '+': | |||
| 586 | if (!__ypdomain) { | |||
| 587 | if (_yp_check(&__ypdomain) == 0) | |||
| 588 | continue; | |||
| 589 | } | |||
| 590 | __ypproto_set(pw, &__yppbuf, *flagsp, &yp_pw_flags); | |||
| 591 | if (!map) { | |||
| 592 | if (lookup == LOOKUP_BYNAME0) { | |||
| 593 | if ((name = strdup(name)) == NULL((void *)0)) { | |||
| 594 | pw = NULL((void *)0); | |||
| 595 | goto done; | |||
| 596 | } | |||
| 597 | map = PASSWD_BYNAME(__has_ypmaster() ? "master.passwd.byname" : "passwd.byname"); | |||
| 598 | } else { | |||
| 599 | if (asprintf(&name, "%u", uid) == -1) { | |||
| 600 | pw = NULL((void *)0); | |||
| 601 | goto done; | |||
| 602 | } | |||
| 603 | map = PASSWD_BYUID(__has_ypmaster() ? "master.passwd.byuid" : "passwd.byuid"); | |||
| 604 | } | |||
| 605 | } | |||
| 606 | ||||
| 607 | switch (pw->pw_name[1]) { | |||
| 608 | case '\0': | |||
| 609 | free(ypcurrent); | |||
| 610 | ypcurrent = NULL((void *)0); | |||
| 611 | r = yp_match(__ypdomain, map, | |||
| 612 | name, strlen(name), | |||
| 613 | &ypcurrent, &ypcurrentlen); | |||
| 614 | if (r != 0 || ypcurrentlen > buflen) { | |||
| 615 | free(ypcurrent); | |||
| 616 | ypcurrent = NULL((void *)0); | |||
| 617 | continue; | |||
| 618 | } | |||
| 619 | break; | |||
| 620 | case '@': | |||
| 621 | pwnam_netgrp: | |||
| 622 | free(ypcurrent); | |||
| 623 | ypcurrent = NULL((void *)0); | |||
| 624 | if (s == -1) /* first time */ | |||
| 625 | setnetgrent(pw->pw_name + 2); | |||
| 626 | s = getnetgrent(&host, &user, &dom); | |||
| 627 | if (s == 0) { /* end of group */ | |||
| 628 | endnetgrent(); | |||
| 629 | s = -1; | |||
| 630 | continue; | |||
| 631 | } else { | |||
| 632 | if (user && *user) { | |||
| 633 | r = yp_match(__ypdomain, map, | |||
| 634 | user, strlen(user), | |||
| 635 | &ypcurrent, &ypcurrentlen); | |||
| 636 | } else | |||
| 637 | goto pwnam_netgrp; | |||
| 638 | if (r != 0 || ypcurrentlen > buflen) { | |||
| 639 | free(ypcurrent); | |||
| 640 | ypcurrent = NULL((void *)0); | |||
| 641 | /* | |||
| 642 | * just because this | |||
| 643 | * user is bad, doesn't | |||
| 644 | * mean they all are. | |||
| 645 | */ | |||
| 646 | goto pwnam_netgrp; | |||
| 647 | } | |||
| 648 | } | |||
| 649 | break; | |||
| 650 | default: | |||
| 651 | free(ypcurrent); | |||
| 652 | ypcurrent = NULL((void *)0); | |||
| 653 | user = pw->pw_name + 1; | |||
| 654 | r = yp_match(__ypdomain, map, | |||
| 655 | user, strlen(user), | |||
| 656 | &ypcurrent, &ypcurrentlen); | |||
| 657 | if (r != 0 || ypcurrentlen > buflen) { | |||
| 658 | free(ypcurrent); | |||
| 659 | ypcurrent = NULL((void *)0); | |||
| 660 | continue; | |||
| 661 | } | |||
| 662 | break; | |||
| 663 | } | |||
| 664 | bcopy(ypcurrent, buf, ypcurrentlen); | |||
| 665 | buf[ypcurrentlen] = '\0'; | |||
| 666 | if (__ypparse(pw, buf, yp_pw_flags) || | |||
| 667 | __ypexclude_is(&ypexhead, pw->pw_name)) { | |||
| 668 | if (s == 1) /* inside netgrp */ | |||
| 669 | goto pwnam_netgrp; | |||
| 670 | continue; | |||
| 671 | } | |||
| 672 | break; | |||
| 673 | case '-': | |||
| 674 | /* attempted exclusion */ | |||
| 675 | switch (pw->pw_name[1]) { | |||
| 676 | case '\0': | |||
| 677 | break; | |||
| 678 | case '@': | |||
| 679 | setnetgrent(pw->pw_name + 2); | |||
| 680 | while (getnetgrent(&host, &user, &dom)) { | |||
| 681 | if (user && *user) | |||
| 682 | __ypexclude_add(&ypexhead, user); | |||
| 683 | } | |||
| 684 | endnetgrent(); | |||
| 685 | break; | |||
| 686 | default: | |||
| 687 | __ypexclude_add(&ypexhead, pw->pw_name + 1); | |||
| 688 | break; | |||
| 689 | } | |||
| 690 | break; | |||
| 691 | } | |||
| 692 | if ((lookup == LOOKUP_BYUID1 && pw->pw_uid == uid) || | |||
| 693 | (lookup == LOOKUP_BYNAME0 && strcmp(pw->pw_name, name) == 0)) | |||
| 694 | goto done; | |||
| 695 | if (s == 1) /* inside netgrp */ | |||
| 696 | goto pwnam_netgrp; | |||
| 697 | continue; | |||
| 698 | } | |||
| 699 | pw = NULL((void *)0); | |||
| 700 | done: | |||
| 701 | __ypexclude_free(&ypexhead); | |||
| 702 | __ypproto = NULL((void *)0); | |||
| 703 | free(ypcurrent); | |||
| 704 | ypcurrent = NULL((void *)0); | |||
| 705 | if (map) | |||
| 706 | free(name); | |||
| 707 | return (pw); | |||
| 708 | } | |||
| 709 | #endif /* YP */ | |||
| 710 | ||||
| 711 | static struct passwd * | |||
| 712 | _pwhashbyname(const char *name, char *buf, size_t buflen, struct passwd *pw, | |||
| 713 | int *flagsp) | |||
| 714 | { | |||
| 715 | char bf[1 + _PW_NAME_LEN31]; | |||
| 716 | size_t len; | |||
| 717 | DBT key; | |||
| 718 | int r; | |||
| 719 | ||||
| 720 | len = strlen(name); | |||
| 721 | if (len > _PW_NAME_LEN31) | |||
| 722 | return (NULL((void *)0)); | |||
| 723 | bf[0] = _PW_KEYBYNAME'1'; | |||
| 724 | bcopy(name, &bf[1], MINIMUM(len, _PW_NAME_LEN)(((len) < (31)) ? (len) : (31))); | |||
| 725 | key.data = (u_char *)bf; | |||
| 726 | key.size = 1 + MINIMUM(len, _PW_NAME_LEN)(((len) < (31)) ? (len) : (31)); | |||
| 727 | r = __hashpw(&key, buf, buflen, pw, flagsp); | |||
| 728 | if (r) | |||
| 729 | return (pw); | |||
| 730 | return (NULL((void *)0)); | |||
| 731 | } | |||
| 732 | ||||
| 733 | static struct passwd * | |||
| 734 | _pwhashbyuid(uid_t uid, char *buf, size_t buflen, struct passwd *pw, | |||
| 735 | int *flagsp) | |||
| 736 | { | |||
| 737 | char bf[1 + sizeof(int)]; | |||
| 738 | DBT key; | |||
| 739 | int r; | |||
| 740 | ||||
| 741 | bf[0] = _PW_KEYBYUID'3'; | |||
| 742 | bcopy(&uid, &bf[1], sizeof(uid)); | |||
| 743 | key.data = (u_char *)bf; | |||
| 744 | key.size = 1 + sizeof(uid); | |||
| 745 | r = __hashpw(&key, buf, buflen, pw, flagsp); | |||
| 746 | if (r) | |||
| 747 | return (pw); | |||
| 748 | return (NULL((void *)0)); | |||
| 749 | } | |||
| 750 | ||||
| 751 | static int | |||
| 752 | getpwnam_internal(const char *name, struct passwd *pw, char *buf, size_t buflen, | |||
| 753 | struct passwd **pwretp, bool_Bool shadow, bool_Bool reentrant) | |||
| 754 | { | |||
| 755 | struct passwd *pwret = NULL((void *)0); | |||
| 756 | int flags = 0, *flagsp = &flags; | |||
| 757 | int my_errno = 0; | |||
| 758 | int saved_errno, tmp_errno; | |||
| 759 | ||||
| 760 | _THREAD_PRIVATE_MUTEX_LOCK(pw)do { if (_thread_cb.tc_tag_lock != ((void *)0)) _thread_cb.tc_tag_lock (&(_thread_tagname_pw)); } while (0); | |||
| 761 | saved_errno = errno(*__errno()); | |||
| 762 | errno(*__errno()) = 0; | |||
| 763 | if (!_pw_db && !__initdb(shadow)) | |||
| 764 | goto fail; | |||
| 765 | ||||
| 766 | if (!reentrant) { | |||
| 767 | /* Allocate space for struct and strings, unmapping the old. */ | |||
| 768 | if ((pw = __get_pw_buf(&buf, &buflen, -1, name)) == NULL((void *)0)) | |||
| 769 | goto fail; | |||
| 770 | flagsp = &_pw_flags; | |||
| 771 | } | |||
| 772 | ||||
| 773 | #ifdef YP1 | |||
| 774 | if (__has_yppw()) | |||
| 775 | pwret = __yppwlookup(LOOKUP_BYNAME0, (char *)name, 0, pw, | |||
| 776 | buf, buflen, flagsp); | |||
| 777 | #endif /* YP */ | |||
| 778 | if (!pwret) | |||
| 779 | pwret = _pwhashbyname(name, buf, buflen, pw, flagsp); | |||
| 780 | ||||
| 781 | if (!_pw_stayopen) { | |||
| 782 | tmp_errno = errno(*__errno()); | |||
| 783 | (void)(_pw_db->close)(_pw_db); | |||
| 784 | _pw_db = NULL((void *)0); | |||
| 785 | errno(*__errno()) = tmp_errno; | |||
| 786 | } | |||
| 787 | fail: | |||
| 788 | if (pwretp) | |||
| 789 | *pwretp = pwret; | |||
| 790 | if (pwret == NULL((void *)0)) | |||
| 791 | my_errno = errno(*__errno()); | |||
| 792 | errno(*__errno()) = saved_errno; | |||
| 793 | _THREAD_PRIVATE_MUTEX_UNLOCK(pw)do { if (_thread_cb.tc_tag_unlock != ((void *)0)) _thread_cb. tc_tag_unlock(&(_thread_tagname_pw)); } while (0); | |||
| 794 | return (my_errno); | |||
| 795 | } | |||
| 796 | ||||
| 797 | int | |||
| 798 | getpwnam_r(const char *name, struct passwd *pw, char *buf, size_t buflen, | |||
| 799 | struct passwd **pwretp) | |||
| 800 | { | |||
| 801 | return getpwnam_internal(name, pw, buf, buflen, pwretp, false0, true1); | |||
| 802 | } | |||
| 803 | DEF_WEAK(getpwnam_r)__asm__(".weak " "getpwnam_r" " ; " "getpwnam_r" " = " "_libc_getpwnam_r" ); | |||
| 804 | ||||
| 805 | struct passwd * | |||
| 806 | getpwnam(const char *name) | |||
| 807 | { | |||
| 808 | struct passwd *pw = NULL((void *)0); | |||
| 809 | int my_errno; | |||
| 810 | ||||
| 811 | my_errno = getpwnam_internal(name, NULL((void *)0), NULL((void *)0), 0, &pw, false0, false0); | |||
| 812 | if (my_errno) { | |||
| 813 | pw = NULL((void *)0); | |||
| 814 | errno(*__errno()) = my_errno; | |||
| 815 | } | |||
| 816 | return (pw); | |||
| 817 | } | |||
| 818 | ||||
| 819 | struct passwd * | |||
| 820 | getpwnam_shadow(const char *name) | |||
| 821 | { | |||
| 822 | struct passwd *pw = NULL((void *)0); | |||
| 823 | int my_errno; | |||
| 824 | ||||
| 825 | my_errno = getpwnam_internal(name, NULL((void *)0), NULL((void *)0), 0, &pw, true1, false0); | |||
| 826 | if (my_errno) { | |||
| 827 | pw = NULL((void *)0); | |||
| 828 | errno(*__errno()) = my_errno; | |||
| 829 | } | |||
| 830 | return (pw); | |||
| 831 | } | |||
| 832 | DEF_WEAK(getpwnam_shadow)__asm__(".weak " "getpwnam_shadow" " ; " "getpwnam_shadow" " = " "_libc_getpwnam_shadow"); | |||
| 833 | ||||
| 834 | static int | |||
| 835 | getpwuid_internal(uid_t uid, struct passwd *pw, char *buf, size_t buflen, | |||
| 836 | struct passwd **pwretp, bool_Bool shadow, bool_Bool reentrant) | |||
| 837 | { | |||
| 838 | struct passwd *pwret = NULL((void *)0); | |||
| 839 | int flags = 0, *flagsp = &flags; | |||
| 840 | int my_errno = 0; | |||
| 841 | int saved_errno, tmp_errno; | |||
| 842 | ||||
| 843 | _THREAD_PRIVATE_MUTEX_LOCK(pw)do { if (_thread_cb.tc_tag_lock != ((void *)0)) _thread_cb.tc_tag_lock (&(_thread_tagname_pw)); } while (0); | |||
| 844 | saved_errno = errno(*__errno()); | |||
| 845 | errno(*__errno()) = 0; | |||
| 846 | if (!_pw_db && !__initdb(shadow)) | |||
| 847 | goto fail; | |||
| 848 | ||||
| 849 | if (!reentrant) { | |||
| 850 | /* Allocate space for struct and strings, unmapping the old. */ | |||
| 851 | if ((pw = __get_pw_buf(&buf, &buflen, uid, NULL((void *)0))) == NULL((void *)0)) | |||
| 852 | goto fail; | |||
| 853 | flagsp = &_pw_flags; | |||
| 854 | } | |||
| 855 | ||||
| 856 | #ifdef YP1 | |||
| 857 | if (__has_yppw()) | |||
| 858 | pwret = __yppwlookup(LOOKUP_BYUID1, NULL((void *)0), uid, pw, | |||
| 859 | buf, buflen, flagsp); | |||
| 860 | #endif /* YP */ | |||
| 861 | if (!pwret) | |||
| 862 | pwret = _pwhashbyuid(uid, buf, buflen, pw, flagsp); | |||
| 863 | ||||
| 864 | if (!_pw_stayopen) { | |||
| 865 | tmp_errno = errno(*__errno()); | |||
| 866 | (void)(_pw_db->close)(_pw_db); | |||
| 867 | _pw_db = NULL((void *)0); | |||
| 868 | errno(*__errno()) = tmp_errno; | |||
| 869 | } | |||
| 870 | fail: | |||
| 871 | if (pwretp) | |||
| 872 | *pwretp = pwret; | |||
| 873 | if (pwret == NULL((void *)0)) | |||
| 874 | my_errno = errno(*__errno()); | |||
| 875 | errno(*__errno()) = saved_errno; | |||
| 876 | _THREAD_PRIVATE_MUTEX_UNLOCK(pw)do { if (_thread_cb.tc_tag_unlock != ((void *)0)) _thread_cb. tc_tag_unlock(&(_thread_tagname_pw)); } while (0); | |||
| 877 | return (my_errno); | |||
| 878 | } | |||
| 879 | ||||
| 880 | ||||
| 881 | int | |||
| 882 | getpwuid_r(uid_t uid, struct passwd *pw, char *buf, size_t buflen, | |||
| 883 | struct passwd **pwretp) | |||
| 884 | { | |||
| 885 | return getpwuid_internal(uid, pw, buf, buflen, pwretp, false0, true1); | |||
| 886 | } | |||
| 887 | DEF_WEAK(getpwuid_r)__asm__(".weak " "getpwuid_r" " ; " "getpwuid_r" " = " "_libc_getpwuid_r" ); | |||
| 888 | ||||
| 889 | struct passwd * | |||
| 890 | getpwuid(uid_t uid) | |||
| 891 | { | |||
| 892 | struct passwd *pw = NULL((void *)0); | |||
| 893 | int my_errno; | |||
| 894 | ||||
| 895 | my_errno = getpwuid_internal(uid, NULL((void *)0), NULL((void *)0), 0, &pw, false0, false0); | |||
| 896 | if (my_errno) { | |||
| 897 | pw = NULL((void *)0); | |||
| 898 | errno(*__errno()) = my_errno; | |||
| 899 | } | |||
| 900 | return (pw); | |||
| 901 | } | |||
| 902 | ||||
| 903 | struct passwd * | |||
| 904 | getpwuid_shadow(uid_t uid) | |||
| 905 | { | |||
| 906 | struct passwd *pw = NULL((void *)0); | |||
| 907 | int my_errno; | |||
| 908 | ||||
| 909 | my_errno = getpwuid_internal(uid, NULL((void *)0), NULL((void *)0), 0, &pw, true1, false0); | |||
| 910 | if (my_errno) { | |||
| 911 | pw = NULL((void *)0); | |||
| 912 | errno(*__errno()) = my_errno; | |||
| 913 | } | |||
| 914 | return (pw); | |||
| 915 | } | |||
| 916 | DEF_WEAK(getpwuid_shadow)__asm__(".weak " "getpwuid_shadow" " ; " "getpwuid_shadow" " = " "_libc_getpwuid_shadow"); | |||
| 917 | ||||
| 918 | int | |||
| 919 | setpassent(int stayopen) | |||
| 920 | { | |||
| 921 | _THREAD_PRIVATE_MUTEX_LOCK(pw)do { if (_thread_cb.tc_tag_lock != ((void *)0)) _thread_cb.tc_tag_lock (&(_thread_tagname_pw)); } while (0); | |||
| 922 | _pw_keynum = 0; | |||
| 923 | _pw_stayopen = stayopen; | |||
| 924 | #ifdef YP1 | |||
| 925 | __ypmode = YPMODE_NONE; | |||
| 926 | free(__ypcurrent); | |||
| 927 | __ypcurrent = NULL((void *)0); | |||
| 928 | __ypexclude_free(&__ypexhead); | |||
| 929 | __ypproto = NULL((void *)0); | |||
| 930 | #endif | |||
| 931 | _THREAD_PRIVATE_MUTEX_UNLOCK(pw)do { if (_thread_cb.tc_tag_unlock != ((void *)0)) _thread_cb. tc_tag_unlock(&(_thread_tagname_pw)); } while (0); | |||
| 932 | return (1); | |||
| 933 | } | |||
| 934 | DEF_WEAK(setpassent)__asm__(".weak " "setpassent" " ; " "setpassent" " = " "_libc_setpassent" ); | |||
| 935 | ||||
| 936 | void | |||
| 937 | setpwent(void) | |||
| 938 | { | |||
| 939 | (void) setpassent(0); | |||
| 940 | } | |||
| 941 | ||||
| 942 | void | |||
| 943 | endpwent(void) | |||
| 944 | { | |||
| 945 | int saved_errno; | |||
| 946 | ||||
| 947 | _THREAD_PRIVATE_MUTEX_LOCK(pw)do { if (_thread_cb.tc_tag_lock != ((void *)0)) _thread_cb.tc_tag_lock (&(_thread_tagname_pw)); } while (0); | |||
| 948 | saved_errno = errno(*__errno()); | |||
| 949 | _pw_keynum = 0; | |||
| 950 | if (_pw_db) { | |||
| 951 | (void)(_pw_db->close)(_pw_db); | |||
| 952 | _pw_db = NULL((void *)0); | |||
| 953 | } | |||
| 954 | #ifdef YP1 | |||
| 955 | __ypmode = YPMODE_NONE; | |||
| 956 | free(__ypcurrent); | |||
| 957 | __ypcurrent = NULL((void *)0); | |||
| 958 | __ypexclude_free(&__ypexhead); | |||
| 959 | __ypproto = NULL((void *)0); | |||
| 960 | #endif | |||
| 961 | errno(*__errno()) = saved_errno; | |||
| 962 | _THREAD_PRIVATE_MUTEX_UNLOCK(pw)do { if (_thread_cb.tc_tag_unlock != ((void *)0)) _thread_cb. tc_tag_unlock(&(_thread_tagname_pw)); } while (0); | |||
| 963 | } | |||
| 964 | ||||
| 965 | static int | |||
| 966 | __initdb(int shadow) | |||
| 967 | { | |||
| 968 | static int warned; | |||
| 969 | int saved_errno = errno(*__errno()); | |||
| 970 | ||||
| 971 | #ifdef YP1 | |||
| 972 | /* | |||
| 973 | * Hint to the kernel that a passwd database operation is happening. | |||
| 974 | */ | |||
| 975 | (void)access("/var/run/ypbind.lock", R_OK0x04); | |||
| 976 | errno(*__errno()) = saved_errno; | |||
| 977 | ||||
| 978 | __ypmode = YPMODE_NONE; | |||
| 979 | __getpwent_has_yppw = -1; | |||
| 980 | #endif | |||
| 981 | if (shadow) | |||
| 982 | _pw_db = dbopen(_PATH_SMP_DB"/etc/spwd.db", O_RDONLY0x0000, 0, DB_HASH, NULL((void *)0)); | |||
| 983 | if (!_pw_db) | |||
| 984 | _pw_db = dbopen(_PATH_MP_DB"/etc/pwd.db", O_RDONLY0x0000, 0, DB_HASH, NULL((void *)0)); | |||
| 985 | if (_pw_db) { | |||
| 986 | errno(*__errno()) = saved_errno; | |||
| 987 | return (1); | |||
| 988 | } | |||
| 989 | if (!warned) { | |||
| 990 | saved_errno = errno(*__errno()); | |||
| 991 | errno(*__errno()) = saved_errno; | |||
| 992 | warned = 1; | |||
| 993 | } | |||
| 994 | return (0); | |||
| 995 | } | |||
| 996 | ||||
| 997 | static int | |||
| 998 | __hashpw(DBT *key, char *buf, size_t buflen, struct passwd *pw, | |||
| 999 | int *flagsp) | |||
| 1000 | { | |||
| 1001 | char *p, *t; | |||
| 1002 | DBT data; | |||
| 1003 | ||||
| 1004 | if ((_pw_db->get)(_pw_db, key, &data, 0)) | |||
| 1005 | return (0); | |||
| 1006 | p = (char *)data.data; | |||
| 1007 | if (data.size > buflen) { | |||
| 1008 | errno(*__errno()) = ERANGE34; | |||
| 1009 | return (0); | |||
| 1010 | } | |||
| 1011 | ||||
| 1012 | t = buf; | |||
| 1013 | #define EXPAND(e)e = t; while ((*t++ = *p++)); e = t; while ((*t++ = *p++)); | |||
| 1014 | EXPAND(pw->pw_name)pw->pw_name = t; while ((*t++ = *p++));; | |||
| 1015 | EXPAND(pw->pw_passwd)pw->pw_passwd = t; while ((*t++ = *p++));; | |||
| 1016 | bcopy(p, (char *)&pw->pw_uid, sizeof(int)); | |||
| 1017 | p += sizeof(int); | |||
| 1018 | bcopy(p, (char *)&pw->pw_gid, sizeof(int)); | |||
| 1019 | p += sizeof(int); | |||
| 1020 | bcopy(p, (char *)&pw->pw_change, sizeof(time_t)); | |||
| 1021 | p += sizeof(time_t); | |||
| 1022 | EXPAND(pw->pw_class)pw->pw_class = t; while ((*t++ = *p++));; | |||
| 1023 | EXPAND(pw->pw_gecos)pw->pw_gecos = t; while ((*t++ = *p++));; | |||
| 1024 | EXPAND(pw->pw_dir)pw->pw_dir = t; while ((*t++ = *p++));; | |||
| 1025 | EXPAND(pw->pw_shell)pw->pw_shell = t; while ((*t++ = *p++));; | |||
| 1026 | bcopy(p, (char *)&pw->pw_expire, sizeof(time_t)); | |||
| 1027 | p += sizeof(time_t); | |||
| 1028 | ||||
| 1029 | /* See if there's any data left. If so, read in flags. */ | |||
| 1030 | if (data.size > (p - (char *)data.data)) { | |||
| 1031 | bcopy(p, (char *)flagsp, sizeof(int)); | |||
| 1032 | p += sizeof(int); | |||
| 1033 | } else | |||
| 1034 | *flagsp = _PASSWORD_NOUID0x01|_PASSWORD_NOGID0x02; /* default */ | |||
| 1035 | return (1); | |||
| 1036 | } |