xbps/lib/repo_pkgdeps.c
Duncaen d1667fd931 Add the ability to ignore packages
The previous idea was to use virtual packages in the users configuration
to satisfy dependencies by mapping them to existing installed packages.
Using virtual packages for it doesn't work as expected and trying to make
it work would break other functionalities of virtual packages, like the
version satisfaction checks for `provides` and the ability to replace
virtual packages with real packages. The virtual package functionality
should be used exclusively for virtual packages.

This allows users to specify packages packages that should be ignored.
Ignored packages in dependencies are always satisfied without installing
the package, while updating or installing a package that depends on an
ignored package.

This does NOT ignore the shlib checks, ignoring a package that provides
required shared libraries will abort the transaction as if there was no
package that provides the required shared library.
2019-04-19 23:07:59 +02:00

410 lines
12 KiB
C

/*-
* Copyright (c) 2008-2016 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "xbps_api_impl.h"
static int
add_missing_reqdep(struct xbps_handle *xhp, const char *reqpkg)
{
xbps_array_t mdeps;
xbps_object_iterator_t iter = NULL;
xbps_object_t obj;
unsigned int idx = 0;
bool add_pkgdep, pkgfound, update_pkgdep;
int rv = 0;
assert(reqpkg != NULL);
add_pkgdep = update_pkgdep = pkgfound = false;
mdeps = xbps_dictionary_get(xhp->transd, "missing_deps");
iter = xbps_array_iterator(mdeps);
if (iter == NULL)
goto out;
while ((obj = xbps_object_iterator_next(iter)) != NULL) {
const char *curdep, *curver, *pkgver;
char *curpkgnamedep = NULL, *pkgnamedep = NULL;
assert(xbps_object_type(obj) == XBPS_TYPE_STRING);
curdep = xbps_string_cstring_nocopy(obj);
curver = xbps_pkgpattern_version(curdep);
pkgver = xbps_pkgpattern_version(reqpkg);
if (curver == NULL || pkgver == NULL)
goto out;
curpkgnamedep = xbps_pkgpattern_name(curdep);
if (curpkgnamedep == NULL)
goto out;
pkgnamedep = xbps_pkgpattern_name(reqpkg);
if (pkgnamedep == NULL) {
free(curpkgnamedep);
goto out;
}
if (strcmp(pkgnamedep, curpkgnamedep) == 0) {
pkgfound = true;
if (strcmp(curver, pkgver) == 0) {
free(curpkgnamedep);
free(pkgnamedep);
rv = EEXIST;
goto out;
}
/*
* if new dependency version is greater than current
* one, store it.
*/
xbps_dbg_printf(xhp, "Missing pkgdep name matched, curver: %s newver: %s\n", curver, pkgver);
if (xbps_cmpver(curver, pkgver) <= 0) {
add_pkgdep = false;
free(curpkgnamedep);
free(pkgnamedep);
rv = EEXIST;
goto out;
}
update_pkgdep = true;
}
free(curpkgnamedep);
free(pkgnamedep);
if (pkgfound)
break;
idx++;
}
add_pkgdep = true;
out:
if (iter)
xbps_object_iterator_release(iter);
if (update_pkgdep)
xbps_array_remove(mdeps, idx);
if (add_pkgdep) {
char *str;
str = xbps_xasprintf("MISSING: %s", reqpkg);
xbps_array_add_cstring(mdeps, str);
free(str);
}
return rv;
}
#define MAX_DEPTH 512
static int
find_repo_deps(struct xbps_handle *xhp,
xbps_array_t unsorted, /* array of unsorted deps */
xbps_array_t pkg_rdeps_array, /* current pkg rundeps array */
xbps_array_t pkg_provides, /* current pkg provides array */
const char *curpkg, /* current pkgver */
unsigned short *depth) /* max recursion depth */
{
xbps_dictionary_t curpkgd = NULL;
xbps_object_t obj;
xbps_object_iterator_t iter;
xbps_array_t curpkgrdeps = NULL, curpkgprovides = NULL;
pkg_state_t state;
const char *reqpkg, *pkgver_q, *reason = NULL;
char *pkgname, *reqpkgname;
int rv = 0;
bool foundvpkg;
if (*depth >= MAX_DEPTH)
return ELOOP;
/*
* Iterate over the list of required run dependencies for
* current package.
*/
iter = xbps_array_iterator(pkg_rdeps_array);
assert(iter);
while ((obj = xbps_object_iterator_next(iter))) {
foundvpkg = false;
reqpkg = xbps_string_cstring_nocopy(obj);
if (xhp->flags & XBPS_FLAG_DEBUG) {
xbps_dbg_printf(xhp, "%s", "");
for (unsigned short x = 0; x < *depth; x++) {
xbps_dbg_printf_append(xhp, " ");
}
xbps_dbg_printf_append(xhp, "%s: requires dependency '%s': ", curpkg ? curpkg : " ", reqpkg);
}
if (((pkgname = xbps_pkgpattern_name(reqpkg)) == NULL) &&
((pkgname = xbps_pkg_name(reqpkg)) == NULL)) {
xbps_dbg_printf(xhp, "%s: can't guess pkgname for dependency: %s\n", curpkg, reqpkg);
xbps_set_cb_state(xhp, XBPS_STATE_INVALID_DEP, ENXIO, NULL,
"%s: can't guess pkgname for dependency '%s'", curpkg, reqpkg);
rv = ENXIO;
break;
}
/*
* Pass 0: check if required dependency is ignored.
*/
if (xbps_pkg_is_ignored(xhp, pkgname)) {
xbps_dbg_printf_append(xhp, "%s ignored.\n", pkgname);
free(pkgname);
continue;
}
/*
* Pass 1: check if required dependency is provided as virtual
* package via "provides", if true ignore dependency.
*/
if (pkg_provides && xbps_match_virtual_pkg_in_array(pkg_provides, reqpkg)) {
xbps_dbg_printf_append(xhp, "%s is a vpkg provided by %s, ignored.\n", pkgname, curpkg);
free(pkgname);
continue;
}
/*
* Pass 2: check if required dependency has been already
* added in the transaction dictionary.
*/
if ((curpkgd = xbps_find_pkg_in_array(unsorted, reqpkg, NULL)) ||
(curpkgd = xbps_find_virtualpkg_in_array(xhp, unsorted, reqpkg, NULL))) {
xbps_dictionary_get_cstring_nocopy(curpkgd, "pkgver", &pkgver_q);
xbps_dbg_printf_append(xhp, " (%s queued)\n", pkgver_q);
free(pkgname);
continue;
}
/*
* Pass 3: check if required dependency is already installed
* and its version is fully matched.
*/
if ((curpkgd = xbps_pkgdb_get_pkg(xhp, pkgname)) == NULL) {
if ((curpkgd = xbps_pkgdb_get_virtualpkg(xhp, pkgname))) {
foundvpkg = true;
}
}
if (curpkgd == NULL) {
if (errno && errno != ENOENT) {
/* error */
rv = errno;
xbps_dbg_printf(xhp, "failed to find installed pkg for `%s': %s\n", reqpkg, strerror(rv));
free(pkgname);
break;
}
free(pkgname);
/* Required dependency not installed */
xbps_dbg_printf_append(xhp, "not installed.\n");
reason = "install";
state = XBPS_PKG_STATE_NOT_INSTALLED;
} else {
/*
* Required dependency is installed, check if its version can
* satisfy the requirements.
*/
xbps_dictionary_get_cstring_nocopy(curpkgd, "pkgver", &pkgver_q);
/* Check its state */
if ((rv = xbps_pkg_state_dictionary(curpkgd, &state)) != 0) {
free(pkgname);
break;
}
if (foundvpkg && xbps_match_virtual_pkg_in_dict(curpkgd, reqpkg)) {
/*
* Check if required dependency is a virtual package and is satisfied
* by an installed package.
*/
xbps_dbg_printf_append(xhp, "[virtual] satisfied by `%s'.\n", pkgver_q);
free(pkgname);
continue;
}
rv = xbps_pkgpattern_match(pkgver_q, reqpkg);
if (rv == 0) {
char *curpkgname;
/*
* The version requirement is not satisfied.
*/
curpkgname = xbps_pkg_name(pkgver_q);
assert(curpkgname);
if (strcmp(pkgname, curpkgname)) {
xbps_dbg_printf_append(xhp, "not installed `%s (vpkg)'", pkgver_q);
if (xbps_dictionary_get(curpkgd, "hold")) {
xbps_dbg_printf_append(xhp, " on hold state! ignoring package.\n");
} else {
xbps_dbg_printf_append(xhp, "\n");
reason = "install";
}
} else {
xbps_dbg_printf_append(xhp, "installed `%s', must be updated", pkgver_q);
if (xbps_dictionary_get(curpkgd, "hold")) {
xbps_dbg_printf_append(xhp, " on hold state! ignoring package.\n");
} else {
xbps_dbg_printf_append(xhp, "\n");
reason = "update";
}
}
free(curpkgname);
free(pkgname);
} else if (rv == 1) {
/*
* The version requirement is satisfied.
*/
free(pkgname);
rv = 0;
if (state == XBPS_PKG_STATE_UNPACKED) {
/*
* Package matches the dependency pattern but was only unpacked,
* configure pkg.
*/
xbps_dbg_printf_append(xhp, "installed `%s', must be configured.\n", pkgver_q);
reason = "configure";
} else if (state == XBPS_PKG_STATE_INSTALLED) {
/*
* Package matches the dependency pattern and is fully installed,
* skip to next one.
*/
xbps_dbg_printf_append(xhp, "installed `%s'.\n", pkgver_q);
continue;
}
} else {
/* error matching pkgpattern */
xbps_dbg_printf(xhp, "failed to match pattern %s with %s\n", reqpkg, pkgver_q);
free(pkgname);
break;
}
}
if (xbps_dictionary_get(curpkgd, "hold")) {
xbps_dbg_printf(xhp, "%s on hold state! ignoring package.\n", curpkg);
continue;
}
/*
* Pass 4: find required dependency in repository pool.
* If dependency does not match add pkg into the missing
* deps array and pass to next one.
*/
if (((curpkgd = xbps_rpool_get_pkg(xhp, reqpkg)) == NULL) &&
((curpkgd = xbps_rpool_get_virtualpkg(xhp, reqpkg)) == NULL)) {
/* pkg not found, there was some error */
if (errno && errno != ENOENT) {
xbps_dbg_printf(xhp, "failed to find pkg for `%s' in rpool: %s\n", reqpkg, strerror(errno));
rv = errno;
break;
}
rv = add_missing_reqdep(xhp, reqpkg);
if (rv != 0 && rv != EEXIST) {
xbps_dbg_printf(xhp, "`%s': add_missing_reqdep failed\n", reqpkg);
break;
} else if (rv == EEXIST) {
xbps_dbg_printf(xhp, "`%s' missing dep already added.\n", reqpkg);
rv = 0;
continue;
} else {
xbps_dbg_printf(xhp, "`%s' added into the missing deps array.\n", reqpkg);
continue;
}
}
xbps_dictionary_get_cstring_nocopy(curpkgd, "pkgver", &pkgver_q);
reqpkgname = xbps_pkg_name(pkgver_q);
assert(reqpkgname);
/*
* Check dependency validity.
*/
pkgname = xbps_pkg_name(curpkg);
assert(pkgname);
if (strcmp(pkgname, reqpkgname) == 0) {
xbps_dbg_printf_append(xhp, "[ignoring wrong dependency %s (depends on itself)]\n", reqpkg);
xbps_remove_string_from_array(pkg_rdeps_array, reqpkg);
free(pkgname);
free(reqpkgname);
continue;
}
free(pkgname);
free(reqpkgname);
/*
* If package doesn't have rundeps, pass to the next one.
*/
curpkgrdeps = xbps_dictionary_get(curpkgd, "run_depends");
if (curpkgrdeps == NULL) {
/*
* Package is on repo, add it into the transaction dictionary.
*/
xbps_dictionary_set_cstring_nocopy(curpkgd, "transaction", reason);
rv = xbps_transaction_store(xhp, unsorted, curpkgd, reason, true);
if (rv != 0) {
xbps_dbg_printf(xhp, "xbps_transaction_store failed for `%s': %s\n", reqpkg, strerror(rv));
break;
}
continue;
}
if (xhp->flags & XBPS_FLAG_DEBUG) {
xbps_dbg_printf(xhp, "%s", "");
for (unsigned short x = 0; x < *depth; x++) {
xbps_dbg_printf_append(xhp, " ");
}
xbps_dbg_printf_append(xhp, "%s: finding dependencies:\n", pkgver_q);
}
/*
* Recursively find rundeps for current pkg dictionary.
*/
(*depth)++;
curpkgprovides = xbps_dictionary_get(curpkgd, "provides");
rv = find_repo_deps(xhp, unsorted, curpkgrdeps, curpkgprovides, pkgver_q, depth);
if (rv != 0) {
xbps_dbg_printf(xhp, "Error checking %s for rundeps: %s\n", reqpkg, strerror(rv));
break;
}
/*
* Package is on repo, add it into the transaction dictionary.
*/
xbps_dictionary_set_cstring_nocopy(curpkgd, "transaction", reason);
rv = xbps_transaction_store(xhp, unsorted, curpkgd, reason, true);
if (rv != 0) {
xbps_dbg_printf(xhp, "xbps_transaction_store failed for `%s': %s\n", reqpkg, strerror(rv));
break;
}
}
xbps_object_iterator_release(iter);
(*depth)--;
return rv;
}
int HIDDEN
xbps_repository_find_deps(struct xbps_handle *xhp,
xbps_array_t unsorted,
xbps_dictionary_t repo_pkgd)
{
xbps_array_t pkg_rdeps, pkg_provides = NULL;
const char *pkgver;
unsigned short depth = 0;
pkg_rdeps = xbps_dictionary_get(repo_pkgd, "run_depends");
if (xbps_array_count(pkg_rdeps) == 0)
return 0;
xbps_dictionary_get_cstring_nocopy(repo_pkgd, "pkgver", &pkgver);
xbps_dbg_printf(xhp, "Finding required dependencies for '%s':\n", pkgver);
/*
* This will find direct and indirect deps, if any of them is not
* there it will be added into the missing_deps array.
*/
pkg_provides = xbps_dictionary_get(repo_pkgd, "provides");
return find_repo_deps(xhp, unsorted, pkg_rdeps, pkg_provides, pkgver, &depth);
}