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dd3603749c
While here, use isxdigit(3) instead of a home-rolled version. Reviewed by: mav, asomers Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D48593
115 lines
3.7 KiB
C
115 lines
3.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2012 The FreeBSD Foundation
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*
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* This software was developed by Edward Tomasz Napierala under sponsorship
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* from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <ctype.h>
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#include <string.h>
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#include "libiscsiutil.h"
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#define MAX_NAME_LEN 223
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char *
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checked_strdup(const char *s)
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{
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char *c;
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c = strdup(s);
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if (c == NULL)
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log_err(1, "strdup");
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return (c);
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}
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bool
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valid_iscsi_name(const char *name, void (*warn_fn)(const char *, ...))
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{
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int i;
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if (strlen(name) >= MAX_NAME_LEN) {
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warn_fn("overlong name for target \"%s\"; max length allowed "
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"by iSCSI specification is %d characters",
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name, MAX_NAME_LEN);
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return (false);
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}
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/*
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* In the cases below, we don't return an error, just in case the admin
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* was right, and we're wrong.
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*/
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if (strncasecmp(name, "iqn.", strlen("iqn.")) == 0) {
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for (i = strlen("iqn."); name[i] != '\0'; i++) {
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/*
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* XXX: We should verify UTF-8 normalisation, as defined
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* by 3.2.6.2: iSCSI Name Encoding.
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*/
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if (isalnum(name[i]))
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continue;
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if (name[i] == '-' || name[i] == '.' || name[i] == ':')
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continue;
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warn_fn("invalid character \"%c\" in target name "
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"\"%s\"; allowed characters are letters, digits, "
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"'-', '.', and ':'", name[i], name);
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break;
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}
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/*
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* XXX: Check more stuff: valid date and a valid reversed domain.
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*/
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} else if (strncasecmp(name, "eui.", strlen("eui.")) == 0) {
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if (strlen(name) != strlen("eui.") + 16)
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warn_fn("invalid target name \"%s\"; the \"eui.\" "
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"should be followed by exactly 16 hexadecimal "
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"digits", name);
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for (i = strlen("eui."); name[i] != '\0'; i++) {
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if (!isxdigit(name[i])) {
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warn_fn("invalid character \"%c\" in target "
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"name \"%s\"; allowed characters are 1-9 "
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"and A-F", name[i], name);
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break;
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}
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}
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} else if (strncasecmp(name, "naa.", strlen("naa.")) == 0) {
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if (strlen(name) > strlen("naa.") + 32)
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warn_fn("invalid target name \"%s\"; the \"naa.\" "
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"should be followed by at most 32 hexadecimal "
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"digits", name);
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for (i = strlen("naa."); name[i] != '\0'; i++) {
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if (!isxdigit(name[i])) {
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warn_fn("invalid character \"%c\" in target "
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"name \"%s\"; allowed characters are 1-9 "
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"and A-F", name[i], name);
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break;
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}
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}
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} else {
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warn_fn("invalid target name \"%s\"; should start with "
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"either \"iqn.\", \"eui.\", or \"naa.\"",
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name);
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}
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return (true);
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}
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