f0a75d274a
ZFS file system was ported from OpenSolaris operating system. The code in under CDDL license. I'd like to thank all SUN developers that created this great piece of software. Supported by: Wheel LTD (http://www.wheel.pl/) Supported by: The FreeBSD Foundation (http://www.freebsdfoundation.org/) Supported by: Sentex (http://www.sentex.net/)
123 lines
2.9 KiB
C
123 lines
2.9 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#pragma ident "%Z%%M% %I% %E% SMI"
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#include "libuutil_common.h"
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#include <string.h>
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/*
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* We require names of the form:
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* [provider,]identifier[/[provider,]identifier]...
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*
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* Where provider is either a stock symbol (SUNW) or a java-style reversed
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* domain name (com.sun).
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*
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* Both providers and identifiers must start with a letter, and may
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* only contain alphanumerics, dashes, and underlines. Providers
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* may also contain periods.
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*
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* Note that we do _not_ use the macros in <ctype.h>, since they are affected
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* by the current locale settings.
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*/
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#define IS_ALPHA(c) \
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(((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z'))
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#define IS_DIGIT(c) \
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((c) >= '0' && (c) <= '9')
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static int
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is_valid_ident(const char *s, const char *e, int allowdot)
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{
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char c;
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if (s >= e)
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return (0); /* name is empty */
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c = *s++;
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if (!IS_ALPHA(c))
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return (0); /* does not start with letter */
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while (s < e && (c = *s++) != 0) {
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if (IS_ALPHA(c) || IS_DIGIT(c) || c == '-' || c == '_' ||
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(allowdot && c == '.'))
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continue;
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return (0); /* invalid character */
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}
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return (1);
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}
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static int
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is_valid_component(const char *b, const char *e, uint_t flags)
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{
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char *sp;
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if (flags & UU_NAME_DOMAIN) {
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sp = strchr(b, ',');
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if (sp != NULL && sp < e) {
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if (!is_valid_ident(b, sp, 1))
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return (0);
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b = sp + 1;
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}
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}
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return (is_valid_ident(b, e, 0));
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}
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int
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uu_check_name(const char *name, uint_t flags)
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{
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const char *end = name + strlen(name);
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const char *p;
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if (flags & ~(UU_NAME_DOMAIN | UU_NAME_PATH)) {
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uu_set_error(UU_ERROR_UNKNOWN_FLAG);
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return (-1);
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}
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if (!(flags & UU_NAME_PATH)) {
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if (!is_valid_component(name, end, flags))
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goto bad;
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return (0);
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}
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while ((p = strchr(name, '/')) != NULL) {
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if (!is_valid_component(name, p - 1, flags))
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goto bad;
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name = p + 1;
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}
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if (!is_valid_component(name, end, flags))
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goto bad;
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return (0);
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bad:
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uu_set_error(UU_ERROR_INVALID_ARGUMENT);
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return (-1);
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}
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