mirror of
https://github.com/cryb-to/cryb-to.git
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156 lines
4 KiB
C
156 lines
4 KiB
C
/*-
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* Copyright (c) 2014 Dag-Erling Smørgrav
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* All rights reserved.
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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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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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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 "cryb/impl.h"
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#include <stdlib.h>
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#include <wchar.h>
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#include <cryb/cpe.h>
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/*
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* Free all memory allocated to a cpe structure.
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*/
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void
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cpe_destroy(struct cpe_name *cpe)
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{
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if (cpe == NULL)
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return;
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for (int i = 0; i < cpe->nattr; ++i)
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free(cpe->attr[i]);
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free(cpe);
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}
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/*
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* Copy one or more attributes from a source cpe structure to a
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* destination cpe structure. If an attribute in the source is NULL, the
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* corresponding attribute in the destination will be an empty string.
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*/
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static int
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cpe_copy_attr(struct cpe_name *dst, const struct cpe_name *src, int base, int nattr)
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{
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if (base < 0 || nattr < 0 || base + nattr > src->nattr ||
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base + nattr > dst->nattr)
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return (-1);
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if (nattr == 0)
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nattr = src->nattr - base;
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for (int i = base; i < base + nattr; ++i) {
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if (src->attr[i] != NULL)
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dst->attr[i] = wcsdup(src->attr[i]);
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else
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dst->attr[i] = wcsdup(L"");
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if (dst->attr[i] == NULL)
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return (-1);
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}
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return (nattr);
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}
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/*
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* Duplicate a cpe structure. Any attributes that are NULL in the source
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* will be empty strings in the destination.
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*/
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struct cpe_name *
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cpe_clone(const struct cpe_name *cpe)
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{
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struct cpe_name *ncpe;
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ncpe = calloc(1, sizeof *ncpe +
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cpe->nattr * sizeof *ncpe->attr);
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if (ncpe == NULL)
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return (NULL);
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if (cpe_copy_attr(ncpe, cpe, 0, 0) < 0) {
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cpe_destroy(ncpe);
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return (NULL);
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}
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return (ncpe);
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}
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/*
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* Allocate a new cpe structure.
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*/
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struct cpe_name *
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cpe_new(void)
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{
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struct cpe_name *ncpe;
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if ((ncpe = calloc(1, sizeof *ncpe)) == NULL)
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return (NULL);
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ncpe->ver = cpe23_ver;
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ncpe->nattr = cpe23_nattr;
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return (ncpe);
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}
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/*
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* Upgrade a cpe 2.2 structure to the latest supported version.
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*/
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struct cpe_name *
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cpe_upgrade22(const struct cpe_name *cpe)
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{
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struct cpe_name *ncpe;
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if ((ncpe = cpe_new()) == NULL)
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return (NULL);
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/* copy existing attributes */
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if (cpe_copy_attr(ncpe, cpe, 0, cpe22_nattr) < 0) {
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cpe_destroy(ncpe);
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return (NULL);
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}
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/* extended attributes? */
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if (ncpe->attr[cpe22_edition][0] == L'~') {
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/*
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* XXX pseudo-code:
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*
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* - Split into fields (return an error if there are more
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* than four)
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* - Assign these to sw_edition, target_sw, target_hw and
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* other, in that order.
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*/
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}
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return (ncpe);
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}
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/*
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* Upgrade a cpe structure to the latest supported version.
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*/
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struct cpe_name *
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cpe_upgrade(const struct cpe_name *cpe)
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{
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switch (cpe->ver) {
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case cpe22_ver:
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/* already latest */
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return (cpe_clone(cpe));
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case cpe23_ver:
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return (cpe_upgrade22(cpe));
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default:
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return (NULL);
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}
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}
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