mirror of
https://github.com/libguestfs/libguestfs.git
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73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/* libguestfs
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* Copyright (C) 2014 Red Hat Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "c-ctype.h"
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#include "guestfs.h"
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#include "guestfs-internal.h"
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/**
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* Check whether a string supposed to contain a GUID actually contains
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* it. It can recognize strings either as
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* C<{21EC2020-3AEA-1069-A2DD-08002B30309D}> or
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* C<21EC2020-3AEA-1069-A2DD-08002B30309D>.
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*/
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int
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guestfs_int_validate_guid (const char *str)
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{
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size_t i, len = strlen (str);
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switch (len) {
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case 36:
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break;
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case 38:
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if (str[0] == '{' && str[len -1] == '}') {
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++str;
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len -= 2;
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break;
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}
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return 0;
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default:
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return 0;
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}
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for (i = 0; i < len; ++i) {
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switch (i) {
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case 8:
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case 13:
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case 18:
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case 23:
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if (str[i] != '-')
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return 0;
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break;
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default:
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if (!c_isalnum (str[i]))
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return 0;
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break;
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}
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}
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return 1;
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}
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