xbps/lib/transaction_commit.c

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/*-
* Copyright (c) 2009-2013 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 <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <assert.h>
#include <unistd.h>
#include <limits.h>
#include "xbps_api_impl.h"
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/**
* @file lib/transaction_commit.c
* @brief Transaction handling routines
* @defgroup transaction Transaction handling functions
*
* The following image shows off the full transaction dictionary returned
* by xbps_transaction_prepare().
*
* @image html images/xbps_transaction_dictionary.png
*
* Legend:
* - <b>Salmon bg box</b>: The transaction dictionary.
* - <b>White bg box</b>: mandatory objects.
* - <b>Grey bg box</b>: optional objects.
* - <b>Green bg box</b>: possible value set in the object, only one of them
* will be set.
*
* Text inside of white boxes are the key associated with the object, its
* data type is specified on its edge, i.e string, array, integer, dictionary.
*/
static int
check_binpkgs_hash(struct xbps_handle *xhp, prop_object_iterator_t iter)
{
prop_object_t obj;
const char *pkgver, *arch, *repoloc, *sha256, *trans;
char *binfile, *filen;
int rv = 0;
while ((obj = prop_object_iterator_next(iter)) != NULL) {
prop_dictionary_get_cstring_nocopy(obj, "transaction", &trans);
if ((strcmp(trans, "remove") == 0) ||
(strcmp(trans, "configure") == 0))
continue;
prop_dictionary_get_cstring_nocopy(obj, "architecture", &arch);
prop_dictionary_get_cstring_nocopy(obj, "repository", &repoloc);
prop_dictionary_get_cstring_nocopy(obj, "pkgver", &pkgver);
prop_dictionary_get_cstring_nocopy(obj,
"filename-sha256", &sha256);
binfile = xbps_repository_pkg_path(xhp, obj);
if (binfile == NULL) {
rv = EINVAL;
break;
}
filen = xbps_xasprintf("%s.%s.xbps", pkgver, arch);
xbps_set_cb_state(xhp, XBPS_STATE_VERIFY, 0, pkgver,
"Verifying `%s' package integrity...", filen, repoloc);
rv = xbps_file_hash_check(binfile, sha256);
if (rv != 0) {
free(binfile);
free(filen);
xbps_set_cb_state(xhp, XBPS_STATE_VERIFY_FAIL,
rv, pkgver,
"Failed to verify `%s' package integrity: %s",
filen, strerror(rv));
break;
}
free(binfile);
free(filen);
}
prop_object_iterator_reset(iter);
return rv;
}
static int
download_binpkgs(struct xbps_handle *xhp, prop_object_iterator_t iter)
{
prop_object_t obj;
const char *pkgver, *arch, *fetchstr, *repoloc, *trans;
char *binfile, *filen;
int rv = 0;
bool state_dload = false;
while ((obj = prop_object_iterator_next(iter)) != NULL) {
prop_dictionary_get_cstring_nocopy(obj, "transaction", &trans);
if ((strcmp(trans, "remove") == 0) ||
(strcmp(trans, "configure") == 0))
continue;
prop_dictionary_get_cstring_nocopy(obj, "architecture", &arch);
prop_dictionary_get_cstring_nocopy(obj, "repository", &repoloc);
prop_dictionary_get_cstring_nocopy(obj, "pkgver", &pkgver);
binfile = xbps_repository_pkg_path(xhp, obj);
if (binfile == NULL) {
rv = EINVAL;
break;
}
/*
* If downloaded package is in cachedir continue.
*/
if (access(binfile, R_OK) == 0) {
free(binfile);
continue;
}
/*
* Create cachedir.
*/
if (access(xhp->cachedir, R_OK|X_OK|W_OK) == -1) {
if (xbps_mkpath(xhp->cachedir, 0755) == -1) {
xbps_set_cb_state(xhp, XBPS_STATE_DOWNLOAD_FAIL,
errno, pkgver,
"%s: [trans] cannot create cachedir `%s':"
"%s", pkgver, xhp->cachedir,
strerror(errno));
free(binfile);
rv = errno;
break;
}
}
if (state_dload == false) {
xbps_set_cb_state(xhp, XBPS_STATE_TRANS_DOWNLOAD,
0, NULL, NULL);
state_dload = true;
}
filen = xbps_xasprintf("%s.%s.xbps", pkgver, arch);
xbps_set_cb_state(xhp, XBPS_STATE_DOWNLOAD,
0, pkgver, "Downloading binary package `%s' (from `%s')...",
filen, repoloc);
/*
* Fetch binary package.
*/
if (chdir(xhp->cachedir) == -1) {
xbps_set_cb_state(xhp, XBPS_STATE_DOWNLOAD_FAIL,
errno, pkgver,
"%s: [trans] failed to change dir to cachedir"
"`%s': %s", pkgver, xhp->cachedir,
strerror(errno));
rv = errno;
free(binfile);
free(filen);
break;
}
rv = xbps_fetch_file(xhp, binfile, NULL);
if (rv == -1) {
fetchstr = xbps_fetch_error_string();
xbps_set_cb_state(xhp, XBPS_STATE_DOWNLOAD_FAIL,
fetchLastErrCode != 0 ? fetchLastErrCode : errno,
pkgver, "%s: [trans] failed to download binary package "
"`%s' from `%s': %s", pkgver, filen, repoloc,
fetchstr ? fetchstr : strerror(errno));
free(binfile);
free(filen);
break;
}
rv = 0;
free(binfile);
free(filen);
}
prop_object_iterator_reset(iter);
return rv;
}
int
xbps_transaction_commit(struct xbps_handle *xhp)
{
prop_object_t obj;
prop_object_iterator_t iter;
const char *pkgver, *tract;
int rv = 0;
bool update, install, sr;
assert(prop_object_type(xhp->transd) == PROP_TYPE_DICTIONARY);
update = install = false;
iter = xbps_array_iter_from_dict(xhp->transd, "packages");
if (iter == NULL)
return EINVAL;
/*
* Download binary packages (if they come from a remote repository).
*/
if ((rv = download_binpkgs(xhp, iter)) != 0)
goto out;
/*
* Check SHA256 hashes for binary packages in transaction.
*/
xbps_set_cb_state(xhp, XBPS_STATE_TRANS_VERIFY, 0, NULL, NULL);
if ((rv = check_binpkgs_hash(xhp, iter)) != 0)
goto out;
/*
* Install, update, configure or remove packages as specified
* in the transaction dictionary.
*/
xbps_set_cb_state(xhp, XBPS_STATE_TRANS_RUN, 0, NULL, NULL);
while ((obj = prop_object_iterator_next(iter)) != NULL) {
update = false;
prop_dictionary_get_cstring_nocopy(obj, "transaction", &tract);
prop_dictionary_get_cstring_nocopy(obj, "pkgver", &pkgver);
if (strcmp(tract, "remove") == 0) {
update = false;
sr = false;
/*
* Remove package.
*/
prop_dictionary_get_bool(obj, "remove-and-update",
&update);
prop_dictionary_get_bool(obj, "softreplace", &sr);
rv = xbps_remove_pkg(xhp, pkgver, update, sr);
if (rv != 0) {
xbps_dbg_printf(xhp, "[trans] failed to "
"remove %s\n", pkgver);
goto out;
}
} else if (strcmp(tract, "configure") == 0) {
/*
* Reconfigure pending package.
*/
rv = xbps_configure_pkg(xhp, pkgver, false, false, false);
if (rv != 0)
goto out;
} else {
/*
* Install or update a package.
*/
if (strcmp(tract, "update") == 0)
update = true;
else
install = true;
if (update && xbps_pkgdb_get_pkg(xhp, pkgver)) {
/*
* Update a package: execute pre-remove
* action if found before unpacking.
*/
xbps_set_cb_state(xhp, XBPS_STATE_UPDATE, 0,
pkgver, NULL);
rv = xbps_remove_pkg(xhp, pkgver, true, false);
if (rv != 0) {
xbps_set_cb_state(xhp,
XBPS_STATE_UPDATE_FAIL,
rv, pkgver,
"%s: [trans] failed to update "
"package `%s'", pkgver,
strerror(rv));
goto out;
}
} else {
/* Install a package */
xbps_set_cb_state(xhp, XBPS_STATE_INSTALL,
0, pkgver, NULL);
}
/*
* Unpack binary package.
*/
if ((rv = xbps_unpack_binary_pkg(xhp, obj)) != 0)
goto out;
/*
* Register package.
*/
if ((rv = xbps_register_pkg(xhp, obj)) != 0)
goto out;
}
}
prop_object_iterator_reset(iter);
/* if there are no packages to install or update we are done */
if (!update && !install)
goto out;
/*
* Configure all unpacked packages.
*/
xbps_set_cb_state(xhp, XBPS_STATE_TRANS_CONFIGURE, 0, NULL, NULL);
while ((obj = prop_object_iterator_next(iter)) != NULL) {
prop_dictionary_get_cstring_nocopy(obj, "transaction", &tract);
if ((strcmp(tract, "remove") == 0) ||
(strcmp(tract, "configure") == 0))
continue;
prop_dictionary_get_cstring_nocopy(obj, "pkgver", &pkgver);
update = false;
if (strcmp(tract, "update") == 0)
update = true;
rv = xbps_configure_pkg(xhp, pkgver, false, update, true);
if (rv != 0) {
xbps_dbg_printf(xhp, "%s: configure failed for "
"%s: %s\n", pkgver, strerror(rv));
goto out;
}
/*
* Notify client callback when a package has been
* installed or updated.
*/
if (update) {
xbps_set_cb_state(xhp, XBPS_STATE_UPDATE_DONE, 0,
pkgver, NULL);
} else {
xbps_set_cb_state(xhp, XBPS_STATE_INSTALL_DONE, 0,
pkgver, NULL);
}
}
out:
prop_object_iterator_release(iter);
return rv;
}