xbps/lib/transaction_check_conflicts.c

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/*-
* Copyright (c) 2012-2020 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "xbps_api_impl.h"
static void
pkg_conflicts_trans(struct xbps_handle *xhp, xbps_array_t array,
xbps_dictionary_t pkg_repod)
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{
xbps_array_t pkg_cflicts, trans_cflicts;
xbps_dictionary_t pkgd, tpkgd;
xbps_object_t obj;
xbps_object_iterator_t iter;
xbps_trans_type_t ttype;
const char *cfpkg, *repopkgver, *repopkgname;
char *buf;
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assert(xhp);
assert(array);
assert(pkg_repod);
pkg_cflicts = xbps_dictionary_get(pkg_repod, "conflicts");
if (xbps_array_count(pkg_cflicts) == 0) {
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return;
}
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ttype = xbps_transaction_pkg_type(pkg_repod);
if (ttype == XBPS_TRANS_HOLD || ttype == XBPS_TRANS_REMOVE) {
return;
}
trans_cflicts = xbps_dictionary_get(xhp->transd, "conflicts");
if (!xbps_dictionary_get_cstring_nocopy(pkg_repod, "pkgver", &repopkgver)) {
return;
}
if (!xbps_dictionary_get_cstring_nocopy(pkg_repod, "pkgname", &repopkgname)) {
return;
}
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iter = xbps_array_iterator(pkg_cflicts);
assert(iter);
while ((obj = xbps_object_iterator_next(iter))) {
const char *pkgver = NULL, *pkgname = NULL;
cfpkg = xbps_string_cstring_nocopy(obj);
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/*
* Check if current pkg conflicts with an installed package.
*/
if ((pkgd = xbps_pkgdb_get_pkg(xhp, cfpkg)) ||
(pkgd = xbps_pkgdb_get_virtualpkg(xhp, cfpkg))) {
/* If the conflicting pkg is on hold, ignore it */
if (xbps_dictionary_get(pkgd, "hold"))
continue;
/* Ignore itself */
if (!xbps_dictionary_get_cstring_nocopy(pkgd, "pkgname", &pkgname)) {
break;
}
if (strcmp(pkgname, repopkgname) == 0) {
continue;
}
if (!xbps_dictionary_get_cstring_nocopy(pkgd, "pkgver", &pkgver)) {
break;
}
/*
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* If there's a pkg for the conflict in transaction,
* ignore it.
*/
if ((tpkgd = xbps_find_pkg_in_array(array, pkgname, 0))) {
ttype = xbps_transaction_pkg_type(tpkgd);
if (ttype == XBPS_TRANS_INSTALL ||
ttype == XBPS_TRANS_UPDATE ||
ttype == XBPS_TRANS_REMOVE ||
ttype == XBPS_TRANS_HOLD) {
continue;
}
}
xbps_dbg_printf(xhp, "found conflicting installed "
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"pkg %s with pkg in transaction %s "
"(matched by %s [trans])\n", pkgver, repopkgver, cfpkg);
buf = xbps_xasprintf("CONFLICT: %s with "
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"installed pkg %s (matched by %s)",
repopkgver, pkgver, cfpkg);
if (!xbps_match_string_in_array(trans_cflicts, buf))
xbps_array_add_cstring(trans_cflicts, buf);
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free(buf);
continue;
}
/*
* Check if current pkg conflicts with any pkg in transaction.
*/
if ((pkgd = xbps_find_pkg_in_array(array, cfpkg, 0)) ||
(pkgd = xbps_find_virtualpkg_in_array(xhp, array, cfpkg, 0))) {
/* ignore pkgs to be removed or on hold */
ttype = xbps_transaction_pkg_type(pkgd);
if (ttype == XBPS_TRANS_REMOVE || ttype == XBPS_TRANS_HOLD) {
continue;
}
/* ignore itself */
if (!xbps_dictionary_get_cstring_nocopy(pkgd, "pkgname", &pkgname)) {
break;
}
if (strcmp(pkgname, repopkgname) == 0) {
continue;
}
if (!xbps_dictionary_get_cstring_nocopy(pkgd, "pkgver", &pkgver)) {
break;
}
xbps_dbg_printf(xhp, "found conflicting pkgs in "
"transaction %s <-> %s (matched by %s [trans])\n",
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pkgver, repopkgver, cfpkg);
buf = xbps_xasprintf("CONFLICT: %s with "
"%s in transaction (matched by %s)",
repopkgver, pkgver, cfpkg);
if (!xbps_match_string_in_array(trans_cflicts, buf))
xbps_array_add_cstring(trans_cflicts, buf);
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free(buf);
continue;
}
}
xbps_object_iterator_release(iter);
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}
static int
pkgdb_conflicts_cb(struct xbps_handle *xhp, xbps_object_t obj,
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const char *key UNUSED, void *arg, bool *done UNUSED)
{
xbps_array_t pkg_cflicts, trans_cflicts, pkgs = arg;
xbps_dictionary_t pkgd;
xbps_object_t obj2;
xbps_object_iterator_t iter;
xbps_trans_type_t ttype;
const char *cfpkg, *repopkgver, *repopkgname;
char *buf;
int rv = 0;
pkg_cflicts = xbps_dictionary_get(obj, "conflicts");
if (xbps_array_count(pkg_cflicts) == 0)
return 0;
if (!xbps_dictionary_get_cstring_nocopy(obj, "pkgver", &repopkgver)) {
return EINVAL;
}
if (!xbps_dictionary_get_cstring_nocopy(obj, "pkgname", &repopkgname)) {
return EINVAL;
}
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/* if a pkg is in the transaction, ignore the one from pkgdb */
if (xbps_find_pkg_in_array(pkgs, repopkgname, 0)) {
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return 0;
}
trans_cflicts = xbps_dictionary_get(xhp->transd, "conflicts");
iter = xbps_array_iterator(pkg_cflicts);
assert(iter);
while ((obj2 = xbps_object_iterator_next(iter))) {
const char *pkgver = NULL, *pkgname = NULL;
cfpkg = xbps_string_cstring_nocopy(obj2);
if ((pkgd = xbps_find_pkg_in_array(pkgs, cfpkg, 0)) ||
(pkgd = xbps_find_virtualpkg_in_array(xhp, pkgs, cfpkg, 0))) {
/* ignore pkgs to be removed or on hold */
ttype = xbps_transaction_pkg_type(pkgd);
if (ttype == XBPS_TRANS_REMOVE || ttype == XBPS_TRANS_HOLD) {
continue;
}
/* ignore itself */
if (!xbps_dictionary_get_cstring_nocopy(pkgd, "pkgname", &pkgname)) {
rv = EINVAL;
break;
}
if (strcmp(pkgname, repopkgname) == 0) {
continue;
}
if (!xbps_dictionary_get_cstring_nocopy(pkgd, "pkgver", &pkgver)) {
rv = EINVAL;
break;
}
xbps_dbg_printf(xhp, "found conflicting pkgs in "
"transaction %s <-> %s (matched by %s [pkgdb])\n",
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pkgver, repopkgver, cfpkg);
buf = xbps_xasprintf("CONFLICT: %s with "
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"%s in transaction (matched by %s)",
repopkgver, pkgver, cfpkg);
if (!xbps_match_string_in_array(trans_cflicts, buf))
xbps_array_add_cstring(trans_cflicts, buf);
free(buf);
continue;
}
}
xbps_object_iterator_release(iter);
return rv;
}
bool HIDDEN
xbps_transaction_check_conflicts(struct xbps_handle *xhp, xbps_array_t pkgs)
{
xbps_array_t array;
unsigned int i;
/* find conflicts in transaction */
for (i = 0; i < xbps_array_count(pkgs); i++) {
pkg_conflicts_trans(xhp, pkgs, xbps_array_get(pkgs, i));
}
/* find conflicts in pkgdb */
if (xbps_pkgdb_foreach_cb_multi(xhp, pkgdb_conflicts_cb, pkgs) != 0) {
return false;
}
array = xbps_dictionary_get(xhp->transd, "conflicts");
if (xbps_array_count(array) == 0) {
xbps_dictionary_remove(xhp->transd, "conflicts");
}
return true;
}