--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)pw_scan.c 8.3 (Berkeley) 4/2/94";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * This module is used to "verify" password entries by chpass(1) and
+ * pwd_mkdb(8).
+ */
+
+#include <sys/param.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "pw_scan.h"
+
+/*
+ * Some software assumes that IDs are short. We should emit warnings
+ * for id's which cannot be stored in a short, but we are more liberal
+ * by default, warning for IDs greater than USHRT_MAX.
+ *
+ * If pw_big_ids_warning is -1 on entry to pw_scan(), it will be set based
+ * on the existence of PW_SCAN_BIG_IDS in the environment.
+ *
+ * It is believed all baseline system software that can not handle the
+ * normal ID sizes is now gone so pw_big_ids_warning is disabled for now.
+ * But the code has been left in place in case end-users want to re-enable
+ * it and/or for the next time the ID sizes get bigger but pieces of the
+ * system lag behind.
+ */
+static int pw_big_ids_warning = 0;
+
+int
+__pw_scan(char *bp, struct passwd *pw, int flags)
+{
+ uid_t id;
+ int root;
+ char *ep, *p, *sh;
+ unsigned long temp;
+
+ if (pw_big_ids_warning == -1)
+ pw_big_ids_warning = getenv("PW_SCAN_BIG_IDS") == NULL ? 1 : 0;
+
+ pw->pw_fields = 0;
+ if (!(pw->pw_name = strsep(&bp, ":"))) /* login */
+ goto fmt;
+ root = !strcmp(pw->pw_name, "root");
+ if (pw->pw_name[0] && (pw->pw_name[0] != '+' || pw->pw_name[1] == '\0'))
+ pw->pw_fields |= _PWF_NAME;
+
+ if (!(pw->pw_passwd = strsep(&bp, ":"))) /* passwd */
+ goto fmt;
+ if (pw->pw_passwd[0])
+ pw->pw_fields |= _PWF_PASSWD;
+
+ if (!(p = strsep(&bp, ":"))) /* uid */
+ goto fmt;
+ if (p[0])
+ pw->pw_fields |= _PWF_UID;
+ else {
+ if (pw->pw_name[0] != '+' && pw->pw_name[0] != '-') {
+ if (flags & _PWSCAN_WARN)
+ warnx("no uid for user %s", pw->pw_name);
+ return (0);
+ }
+ }
+ errno = 0;
+ temp = strtoul(p, &ep, 10);
+ if ((temp == ULONG_MAX && errno == ERANGE) || temp > UID_MAX) {
+ if (flags & _PWSCAN_WARN)
+ warnx("%s > max uid value (%u)", p, UID_MAX);
+ return (0);
+ }
+ id = temp;
+ if (*ep != '\0') {
+ if (flags & _PWSCAN_WARN)
+ warnx("%s uid is incorrect", p);
+ return (0);
+ }
+ if (root && id) {
+ if (flags & _PWSCAN_WARN)
+ warnx("root uid should be 0");
+ return (0);
+ }
+ if (flags & _PWSCAN_WARN && pw_big_ids_warning && id > USHRT_MAX) {
+ warnx("%s > recommended max uid value (%u)", p, USHRT_MAX);
+ /*return (0);*/ /* THIS SHOULD NOT BE FATAL! */
+ }
+ pw->pw_uid = id;
+
+ if (!(p = strsep(&bp, ":"))) /* gid */
+ goto fmt;
+ if (p[0])
+ pw->pw_fields |= _PWF_GID;
+ else {
+ if (pw->pw_name[0] != '+' && pw->pw_name[0] != '-') {
+ if (flags & _PWSCAN_WARN)
+ warnx("no gid for user %s", pw->pw_name);
+ return (0);
+ }
+ }
+ errno = 0;
+ temp = strtoul(p, &ep, 10);
+ if ((temp == ULONG_MAX && errno == ERANGE) || temp > GID_MAX) {
+ if (flags & _PWSCAN_WARN)
+ warnx("%s > max gid value (%u)", p, GID_MAX);
+ return (0);
+ }
+ id = temp;
+ if (*ep != '\0') {
+ if (flags & _PWSCAN_WARN)
+ warnx("%s gid is incorrect", p);
+ return (0);
+ }
+ if (flags & _PWSCAN_WARN && pw_big_ids_warning && id > USHRT_MAX) {
+ warnx("%s > recommended max gid value (%u)", p, USHRT_MAX);
+ /* return (0); This should not be fatal! */
+ }
+ pw->pw_gid = id;
+
+ if (flags & _PWSCAN_MASTER ) {
+ if (!(pw->pw_class = strsep(&bp, ":"))) /* class */
+ goto fmt;
+ if (pw->pw_class[0])
+ pw->pw_fields |= _PWF_CLASS;
+
+ if (!(p = strsep(&bp, ":"))) /* change */
+ goto fmt;
+ if (p[0])
+ pw->pw_fields |= _PWF_CHANGE;
+ pw->pw_change = atol(p);
+
+ if (!(p = strsep(&bp, ":"))) /* expire */
+ goto fmt;
+ if (p[0])
+ pw->pw_fields |= _PWF_EXPIRE;
+ pw->pw_expire = atol(p);
+ }
+ if (!(pw->pw_gecos = strsep(&bp, ":"))) /* gecos */
+ goto fmt;
+ if (pw->pw_gecos[0])
+ pw->pw_fields |= _PWF_GECOS;
+
+ if (!(pw->pw_dir = strsep(&bp, ":"))) /* directory */
+ goto fmt;
+ if (pw->pw_dir[0])
+ pw->pw_fields |= _PWF_DIR;
+
+ if (!(pw->pw_shell = strsep(&bp, ":"))) /* shell */
+ goto fmt;
+
+ p = pw->pw_shell;
+ if (root && *p) { /* empty == /bin/sh */
+ for (setusershell();;) {
+ if (!(sh = getusershell())) {
+ if (flags & _PWSCAN_WARN)
+ warnx("warning, unknown root shell");
+ break;
+ }
+ if (!strcmp(p, sh))
+ break;
+ }
+ endusershell();
+ }
+ if (p[0])
+ pw->pw_fields |= _PWF_SHELL;
+
+ if ((p = strsep(&bp, ":"))) { /* too many */
+fmt:
+ if (flags & _PWSCAN_WARN)
+ warnx("corrupted entry");
+ return (0);
+ }
+ return (1);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)pw_scan.h 8.1 (Berkeley) 4/1/94
+ * $FreeBSD$
+ */
+
+#define _PWSCAN_MASTER 0x01
+#define _PWSCAN_WARN 0x02
+
+extern int __pw_scan(char *, struct passwd *, int);
git.ckatri.com / pw-darwin.git / commitdiff