123 lines
2.8 KiB
C
123 lines
2.8 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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#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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