/* $NetBSD: nis_pw.c,v 1.1.1.2 2012/09/09 16:07:56 christos Exp $ */ /* * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") * Copyright (c) 1996,1999 by Internet Software Consortium. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #if defined(LIBC_SCCS) && !defined(lint) static const char rcsid[] = "Id: nis_pw.c,v 1.4 2005/04/27 04:56:33 sra Exp "; #endif /* LIBC_SCCS and not lint */ /* Imports */ #include "port_before.h" #if !defined(WANT_IRS_PW) || !defined(WANT_IRS_NIS) static int __bind_irs_pw_unneeded; #else #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "port_after.h" #include "irs_p.h" #include "nis_p.h" /* Definitions */ struct pvt { int needrewind; char * nis_domain; char * curkey_data; int curkey_len; char * curval_data; int curval_len; struct passwd passwd; char * pwbuf; }; enum do_what { do_none = 0x0, do_key = 0x1, do_val = 0x2, do_all = 0x3 }; static /*const*/ char passwd_byname[] = "passwd.byname"; static /*const*/ char passwd_byuid[] = "passwd.byuid"; /* Forward */ static void pw_close(struct irs_pw *); static struct passwd * pw_next(struct irs_pw *); static struct passwd * pw_byname(struct irs_pw *, const char *); static struct passwd * pw_byuid(struct irs_pw *, uid_t); static void pw_rewind(struct irs_pw *); static void pw_minimize(struct irs_pw *); static struct passwd * makepasswdent(struct irs_pw *); static void nisfree(struct pvt *, enum do_what); /* Public */ struct irs_pw * irs_nis_pw(struct irs_acc *this) { struct irs_pw *pw; struct pvt *pvt; if (!(pw = memget(sizeof *pw))) { errno = ENOMEM; return (NULL); } memset(pw, 0x5e, sizeof *pw); if (!(pvt = memget(sizeof *pvt))) { memput(pw, sizeof *pw); errno = ENOMEM; return (NULL); } memset(pvt, 0, sizeof *pvt); pvt->needrewind = 1; pvt->nis_domain = ((struct nis_p *)this->private)->domain; pw->private = pvt; pw->close = pw_close; pw->next = pw_next; pw->byname = pw_byname; pw->byuid = pw_byuid; pw->rewind = pw_rewind; pw->minimize = pw_minimize; pw->res_get = NULL; pw->res_set = NULL; return (pw); } /* Methods */ static void pw_close(struct irs_pw *this) { struct pvt *pvt = (struct pvt *)this->private; if (pvt->pwbuf) free(pvt->pwbuf); nisfree(pvt, do_all); memput(pvt, sizeof *pvt); memput(this, sizeof *this); } static struct passwd * pw_next(struct irs_pw *this) { struct pvt *pvt = (struct pvt *)this->private; struct passwd *rval; int r; do { if (pvt->needrewind) { nisfree(pvt, do_all); r = yp_first(pvt->nis_domain, passwd_byname, &pvt->curkey_data, &pvt->curkey_len, &pvt->curval_data, &pvt->curval_len); pvt->needrewind = 0; } else { char *newkey_data; int newkey_len; nisfree(pvt, do_val); r = yp_next(pvt->nis_domain, passwd_byname, pvt->curkey_data, pvt->curkey_len, &newkey_data, &newkey_len, &pvt->curval_data, &pvt->curval_len); nisfree(pvt, do_key); pvt->curkey_data = newkey_data; pvt->curkey_len = newkey_len; } if (r != 0) { errno = ENOENT; return (NULL); } rval = makepasswdent(this); } while (rval == NULL); return (rval); } static struct passwd * pw_byname(struct irs_pw *this, const char *name) { struct pvt *pvt = (struct pvt *)this->private; int r; char *tmp; nisfree(pvt, do_val); DE_CONST(name, tmp); r = yp_match(pvt->nis_domain, passwd_byname, tmp, strlen(tmp), &pvt->curval_data, &pvt->curval_len); if (r != 0) { errno = ENOENT; return (NULL); } return (makepasswdent(this)); } static struct passwd * pw_byuid(struct irs_pw *this, uid_t uid) { struct pvt *pvt = (struct pvt *)this->private; char tmp[sizeof "4294967295"]; int r; nisfree(pvt, do_val); (void) sprintf(tmp, "%u", (unsigned int)uid); r = yp_match(pvt->nis_domain, passwd_byuid, tmp, strlen(tmp), &pvt->curval_data, &pvt->curval_len); if (r != 0) { errno = ENOENT; return (NULL); } return (makepasswdent(this)); } static void pw_rewind(struct irs_pw *this) { struct pvt *pvt = (struct pvt *)this->private; pvt->needrewind = 1; } static void pw_minimize(struct irs_pw *this) { UNUSED(this); /* NOOP */ } /* Private */ static struct passwd * makepasswdent(struct irs_pw *this) { struct pvt *pvt = (struct pvt *)this->private; char *cp; memset(&pvt->passwd, 0, sizeof pvt->passwd); if (pvt->pwbuf) free(pvt->pwbuf); pvt->pwbuf = pvt->curval_data; pvt->curval_data = NULL; cp = pvt->pwbuf; pvt->passwd.pw_name = cp; if (!(cp = strchr(cp, ':'))) goto cleanup; #ifdef HAS_PW_CLASS pvt->passwd.pw_class = cp; /*%< Needs to point at a \0. */ #endif *cp++ = '\0'; pvt->passwd.pw_passwd = cp; if (!(cp = strchr(cp, ':'))) goto cleanup; *cp++ = '\0'; pvt->passwd.pw_uid = atoi(cp); if (!(cp = strchr(cp, ':'))) goto cleanup; *cp++ = '\0'; pvt->passwd.pw_gid = atoi(cp); if (!(cp = strchr(cp, ':'))) goto cleanup; *cp++ = '\0'; pvt->passwd.pw_gecos = cp; if (!(cp = strchr(cp, ':'))) goto cleanup; *cp++ = '\0'; pvt->passwd.pw_dir = cp; if (!(cp = strchr(cp, ':'))) goto cleanup; *cp++ = '\0'; pvt->passwd.pw_shell = cp; if ((cp = strchr(cp, '\n')) != NULL) *cp = '\0'; return (&pvt->passwd); cleanup: free(pvt->pwbuf); pvt->pwbuf = NULL; return (NULL); } static void nisfree(struct pvt *pvt, enum do_what do_what) { if ((do_what & do_key) && pvt->curkey_data) { free(pvt->curkey_data); pvt->curkey_data = NULL; } if ((do_what & do_val) && pvt->curval_data) { free(pvt->curval_data); pvt->curval_data = NULL; } } #endif /* WANT_IRS_PW && WANT_IRS_NIS */ /*! \file */