c457b594aa
Packages to be replaced must be collected *before* checking for broken reverse dependencies, otherwise them will always be detected as broken.
237 lines
6.9 KiB
C
237 lines
6.9 KiB
C
/*-
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* Copyright (c) 2013-2015 Juan Romero Pardines.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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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 <stdbool.h>
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#include <errno.h>
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#include "xbps_api_impl.h"
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/*
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* Verify reverse dependencies for packages in transaction.
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* This will catch cases where a package update would break its reverse dependencies:
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*
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* - foo-1.0 is being updated to 2.0.
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* - baz-1.1 depends on foo<2.0.
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* - foo is updated to 2.0, hence baz-1.1 is currently broken.
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*
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* Abort transaction if such case is found.
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*/
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static bool
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check_virtual_pkgs(xbps_array_t mdeps,
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xbps_dictionary_t trans_pkgd,
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xbps_dictionary_t rev_pkgd)
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{
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xbps_array_t provides;
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bool matched = false;
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provides = xbps_dictionary_get(trans_pkgd, "provides");
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for (unsigned int i = 0; i < xbps_array_count(provides); i++) {
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xbps_array_t rundeps;
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const char *pkgver, *revpkgver, *pkgpattern;
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char *pkgname, *pkgdepname, *vpkgname, *vpkgver, *str;
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pkgver = revpkgver = pkgpattern = NULL;
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pkgname = pkgdepname = vpkgname = vpkgver = str = NULL;
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xbps_dictionary_get_cstring_nocopy(trans_pkgd, "pkgver", &pkgver);
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xbps_dictionary_get_cstring_nocopy(rev_pkgd, "pkgver", &revpkgver);
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xbps_array_get_cstring(provides, i, &vpkgver);
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vpkgname = xbps_pkg_name(vpkgver);
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assert(vpkgname);
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rundeps = xbps_dictionary_get(rev_pkgd, "run_depends");
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for (unsigned int x = 0; x < xbps_array_count(rundeps); x++) {
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xbps_array_get_cstring_nocopy(rundeps, x, &pkgpattern);
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if (((pkgname = xbps_pkgpattern_name(pkgpattern)) == NULL) &&
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((pkgname = xbps_pkg_name(pkgpattern)) == NULL))
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continue;
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if (strcmp(vpkgname, pkgname)) {
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free(pkgname);
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continue;
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}
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free(pkgname);
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if (!strcmp(vpkgver, pkgpattern) ||
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xbps_pkgpattern_match(vpkgver, pkgpattern)) {
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continue;
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}
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str = xbps_xasprintf("%s broken, needs '%s' virtual pkg (got `%s')",
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revpkgver, pkgpattern, vpkgver);
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xbps_array_add_cstring(mdeps, str);
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free(str);
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matched = true;
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}
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free(vpkgname);
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free(vpkgver);
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}
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return matched;
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}
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static void
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broken_pkg(xbps_array_t mdeps, const char *dep, const char *pkg, const char *trans)
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{
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char *str;
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str = xbps_xasprintf("%s (%s) breaks installed pkg `%s'", pkg, trans, dep);
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xbps_array_add_cstring(mdeps, str);
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free(str);
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}
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void HIDDEN
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xbps_transaction_revdeps(struct xbps_handle *xhp, xbps_array_t pkgs)
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{
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xbps_array_t mdeps;
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mdeps = xbps_dictionary_get(xhp->transd, "missing_deps");
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for (unsigned int i = 0; i < xbps_array_count(pkgs); i++) {
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xbps_array_t pkgrdeps;
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xbps_object_t obj;
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const char *pkgver, *tract;
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char *pkgname;
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obj = xbps_array_get(pkgs, i);
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/*
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* if pkg in transaction is not installed,
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* pass to next one.
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*/
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xbps_dictionary_get_cstring_nocopy(obj, "pkgver", &pkgver);
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xbps_dictionary_get_cstring_nocopy(obj, "transaction", &tract);
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pkgname = xbps_pkg_name(pkgver);
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assert(pkgname);
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if (xbps_pkg_is_installed(xhp, pkgname) == 0) {
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free(pkgname);
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continue;
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}
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/*
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* If pkg is installed but does not have revdeps,
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* pass to next one.
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*/
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pkgrdeps = xbps_pkgdb_get_pkg_revdeps(xhp, pkgname);
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if (!xbps_array_count(pkgrdeps)) {
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free(pkgname);
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continue;
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}
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free(pkgname);
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/*
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* Time to validate revdeps for current pkg.
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*/
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for (unsigned int x = 0; x < xbps_array_count(pkgrdeps); x++) {
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xbps_array_t rundeps;
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xbps_dictionary_t revpkgd;
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const char *curpkgver, *revpkgver, *curdep, *curtract;
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char *curpkgname, *curdepname;
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bool found = false;
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xbps_array_get_cstring_nocopy(pkgrdeps, x, &curpkgver);
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pkgname = xbps_pkg_name(curpkgver);
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assert(pkgname);
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if ((revpkgd = xbps_find_pkg_in_array(pkgs, pkgname, NULL))) {
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xbps_dictionary_get_cstring_nocopy(revpkgd, "transaction", &curtract);
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if (strcmp(curtract, "remove") == 0)
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revpkgd = NULL;
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}
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if (revpkgd == NULL)
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revpkgd = xbps_pkgdb_get_pkg(xhp, curpkgver);
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xbps_dictionary_get_cstring_nocopy(revpkgd, "pkgver", &revpkgver);
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/*
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* If target pkg is being removed, all its revdeps
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* will be broken unless those revdeps are also in
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* the transaction.
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*/
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if (strcmp(tract, "remove") == 0) {
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if (xbps_dictionary_get(obj, "replaced")) {
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free(pkgname);
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continue;
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}
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if (xbps_find_pkg_in_array(pkgs, pkgname, "remove")) {
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free(pkgname);
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continue;
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}
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free(pkgname);
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broken_pkg(mdeps, curpkgver, pkgver, tract);
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continue;
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}
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/*
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* First try to match any supported virtual package.
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*/
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if (check_virtual_pkgs(mdeps, obj, revpkgd)) {
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free(pkgname);
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continue;
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}
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/*
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* Try to match real dependencies.
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*/
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rundeps = xbps_dictionary_get(revpkgd, "run_depends");
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/*
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* Find out what dependency is it.
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*/
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curpkgname = xbps_pkg_name(pkgver);
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assert(curpkgname);
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for (unsigned int j = 0; j < xbps_array_count(rundeps); j++) {
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xbps_array_get_cstring_nocopy(rundeps, j, &curdep);
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if (((curdepname = xbps_pkg_name(curdep)) == NULL) &&
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((curdepname = xbps_pkgpattern_name(curdep)) == NULL))
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abort();
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if (strcmp(curdepname, curpkgname) == 0) {
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free(curdepname);
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found = true;
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break;
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}
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free(curdepname);
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}
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free(curpkgname);
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if (!found) {
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free(pkgname);
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continue;
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}
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if (xbps_match_pkgdep_in_array(rundeps, pkgver)) {
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free(pkgname);
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continue;
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}
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/*
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* Installed package conflicts with package
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* in transaction being updated, check
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* if a new version of this conflicting package
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* is in the transaction.
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*/
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if (xbps_find_pkg_in_array(pkgs, pkgname, "update")) {
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free(pkgname);
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continue;
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}
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free(pkgname);
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broken_pkg(mdeps, curpkgver, pkgver, tract);
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}
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}
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}
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