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-rw-r--r--lib/bind/irs/nis_pw.c288
1 files changed, 288 insertions, 0 deletions
diff --git a/lib/bind/irs/nis_pw.c b/lib/bind/irs/nis_pw.c
new file mode 100644
index 0000000..02c6b42
--- /dev/null
+++ b/lib/bind/irs/nis_pw.c
@@ -0,0 +1,288 @@
+/*
+ * 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 1.3.18.1 2005/04/27 05:01:04 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 <sys/param.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
+#include <resolv.h>
+#include <isc/memcluster.h>
+#include <rpc/rpc.h>
+#include <rpc/xdr.h>
+#include <rpcsvc/yp_prot.h>
+#include <rpcsvc/ypclnt.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <isc/memcluster.h>
+
+#include <irs.h>
+
+#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 */
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