270 lines
6.2 KiB
C
270 lines
6.2 KiB
C
/*
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* Copyright (c) 1996 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static const char rcsid[] = "$Id: nis_pw.c,v 1.10 1997/12/04 04:58:01 halley Exp $";
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#endif /* LIBC_SCCS and not lint */
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/* Imports */
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#include "port_before.h"
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#if !defined(WANT_IRS_PW) || !defined(WANT_IRS_NIS)
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static int __bind_irs_pw_unneeded;
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#else
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#include <sys/param.h>
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#include <rpc/rpc.h>
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#include <rpc/xdr.h>
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#include <rpcsvc/yp_prot.h>
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#include <rpcsvc/ypclnt.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <irs.h>
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#include "port_after.h"
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#include "irs_p.h"
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#include "nis_p.h"
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/* Definitions */
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struct pvt {
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int needrewind;
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char * nis_domain;
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char * curkey_data;
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int curkey_len;
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char * curval_data;
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int curval_len;
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struct passwd passwd;
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char * pwbuf;
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};
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enum do_what { do_none = 0x0, do_key = 0x1, do_val = 0x2, do_all = 0x3 };
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static /*const*/ char passwd_byname[] = "passwd.byname";
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static /*const*/ char passwd_byuid[] = "passwd.byuid";
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/* Forward */
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static void pw_close(struct irs_pw *);
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static struct passwd * pw_next(struct irs_pw *);
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static struct passwd * pw_byname(struct irs_pw *, const char *);
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static struct passwd * pw_byuid(struct irs_pw *, uid_t);
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static void pw_rewind(struct irs_pw *);
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static void pw_minimize(struct irs_pw *);
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static struct passwd * makepasswdent(struct irs_pw *);
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static void nisfree(struct pvt *, enum do_what);
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/* Public */
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struct irs_pw *
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irs_nis_pw(struct irs_acc *this) {
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struct irs_pw *pw;
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struct pvt *pvt;
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if (!(pw = malloc(sizeof *pw))) {
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errno = ENOMEM;
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return (NULL);
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}
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memset(pw, 0x5e, sizeof *pw);
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if (!(pvt = malloc(sizeof *pvt))) {
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free(pw);
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errno = ENOMEM;
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return (NULL);
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}
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memset(pvt, 0, sizeof *pvt);
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pvt->needrewind = 1;
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pvt->nis_domain = ((struct nis_p *)this->private)->domain;
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pw->private = pvt;
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pw->close = pw_close;
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pw->next = pw_next;
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pw->byname = pw_byname;
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pw->byuid = pw_byuid;
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pw->rewind = pw_rewind;
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pw->minimize = pw_minimize;
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return (pw);
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}
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/* Methods */
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static void
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pw_close(struct irs_pw *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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if (pvt->pwbuf)
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free(pvt->pwbuf);
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nisfree(pvt, do_all);
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free(pvt);
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free(this);
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}
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static struct passwd *
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pw_next(struct irs_pw *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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struct passwd *rval;
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int r;
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do {
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if (pvt->needrewind) {
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nisfree(pvt, do_all);
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r = yp_first(pvt->nis_domain, passwd_byname,
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&pvt->curkey_data, &pvt->curkey_len,
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&pvt->curval_data, &pvt->curval_len);
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pvt->needrewind = 0;
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} else {
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char *newkey_data;
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int newkey_len;
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nisfree(pvt, do_val);
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r = yp_next(pvt->nis_domain, passwd_byname,
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pvt->curkey_data, pvt->curkey_len,
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&newkey_data, &newkey_len,
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&pvt->curval_data, &pvt->curval_len);
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nisfree(pvt, do_key);
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pvt->curkey_data = newkey_data;
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pvt->curkey_len = newkey_len;
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}
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if (r != 0) {
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errno = ENOENT;
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return (NULL);
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}
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rval = makepasswdent(this);
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} while (rval == NULL);
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return (rval);
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}
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static struct passwd *
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pw_byname(struct irs_pw *this, const char *name) {
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struct pvt *pvt = (struct pvt *)this->private;
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int r;
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nisfree(pvt, do_val);
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r = yp_match(pvt->nis_domain, passwd_byname, name, strlen(name),
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&pvt->curval_data, &pvt->curval_len);
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if (r != 0) {
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errno = ENOENT;
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return (NULL);
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}
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return (makepasswdent(this));
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}
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static struct passwd *
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pw_byuid(struct irs_pw *this, uid_t uid) {
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struct pvt *pvt = (struct pvt *)this->private;
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char tmp[sizeof "4294967295"];
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int r;
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nisfree(pvt, do_val);
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(void) sprintf(tmp, "%u", (unsigned int)uid);
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r = yp_match(pvt->nis_domain, passwd_byuid, tmp, strlen(tmp),
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&pvt->curval_data, &pvt->curval_len);
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if (r != 0) {
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errno = ENOENT;
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return (NULL);
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}
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return (makepasswdent(this));
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}
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static void
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pw_rewind(struct irs_pw *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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pvt->needrewind = 1;
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}
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static void
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pw_minimize(struct irs_pw *this) {
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/* NOOP */
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}
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/* Private */
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static struct passwd *
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makepasswdent(struct irs_pw *this) {
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struct pvt *pvt = (struct pvt *)this->private;
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char *cp;
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memset(&pvt->passwd, 0, sizeof pvt->passwd);
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if (pvt->pwbuf)
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free(pvt->pwbuf);
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pvt->pwbuf = pvt->curval_data;
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pvt->curval_data = NULL;
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cp = pvt->pwbuf;
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pvt->passwd.pw_name = cp;
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if (!(cp = strchr(cp, ':')))
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goto cleanup;
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pvt->passwd.pw_class = cp; /* Needs to point at a \0. */
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*cp++ = '\0';
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pvt->passwd.pw_passwd = cp;
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if (!(cp = strchr(cp, ':')))
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goto cleanup;
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*cp++ = '\0';
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pvt->passwd.pw_uid = atoi(cp);
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if (!(cp = strchr(cp, ':')))
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goto cleanup;
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*cp++ = '\0';
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pvt->passwd.pw_gid = atoi(cp);
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if (!(cp = strchr(cp, ':')))
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goto cleanup;
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*cp++ = '\0';
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pvt->passwd.pw_gecos = cp;
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if (!(cp = strchr(cp, ':')))
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goto cleanup;
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*cp++ = '\0';
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pvt->passwd.pw_dir = cp;
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if (!(cp = strchr(cp, ':')))
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goto cleanup;
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*cp++ = '\0';
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pvt->passwd.pw_shell = cp;
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return (&pvt->passwd);
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cleanup:
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free(pvt->pwbuf);
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pvt->pwbuf = NULL;
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return (NULL);
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}
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static void
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nisfree(struct pvt *pvt, enum do_what do_what) {
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if ((do_what & do_key) && pvt->curkey_data) {
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free(pvt->curkey_data);
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pvt->curkey_data = NULL;
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}
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if ((do_what & do_val) && pvt->curval_data) {
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free(pvt->curval_data);
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pvt->curval_data = NULL;
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}
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}
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#endif /* WANT_IRS_PW && WANT_IRS_NIS */
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