/*

 * Copyright (C) 2008  Kristian Høgsberg <krh@redhat.com>

 * Copyright (C) 2008  Red Hat, Inc

 * Copyright (C) 2009, 2011-2012  J. Ali Harlow <ali@juiblex.co.uk>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License along

 * with this program; if not, write to the Free Software Foundation, Inc.,

 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 */

#define _GNU_SOURCE

#include "config.h"

#include <stdlib.h>

#include <stddef.h>

#include <stdio.h>

#include <stdint.h>

#include <string.h>

#include <sys/stat.h>

#include <unistd.h>

#include <fcntl.h>

#include <dirent.h>

#include <limits.h>

#ifdef HAVE_CURL

#include <curl/curl.h>

#endif

#include <fnmatch.h>

#include <errno.h>

#include "razor.h"

static const char system_repo_filename[] = "system.rzdb";

static const char next_repo_filename[] = "system-next.rzdb";

static const char rawhide_repo_filename[] = "rawhide.rzdb";

static const char *install_root = "";

static const char *repo_filename = system_repo_filename;

static const char *yum_url;

#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))

static int

update_packages(struct razor_transaction *trans,

		struct razor_install_iterator *ii, struct razor_set *system,

		struct razor_set *next, struct razor_atomic *atomic,

		struct razor_relocations *relocations,

		enum razor_stage_type stage);

static int

update_system(struct razor_root *root, struct razor_relocations *relocations,

	      struct razor_transaction *trans, struct razor_set *next,

	      const char *verb);

static struct razor_package_iterator *

create_iterator_from_argv(struct razor_set *set, int argc, const char *argv[])

{

	struct razor_package_query *query;

	struct razor_package_iterator *iter;

	struct razor_package *package;

	const char *name, *pattern;

	int i, count;

	if (argc == 0)

		return razor_package_iterator_create(set);

	query = razor_package_query_create(set);

	for (i = 0; i < argc; i++) {

		iter = razor_package_iterator_create(set);

		pattern = argv[i];

		count = 0;

		while (razor_package_iterator_next(iter, &package,

						   RAZOR_DETAIL_NAME, &name,

						   RAZOR_DETAIL_LAST)) {

			if (fnmatch(pattern, name, 0) != 0)

				continue;

			razor_package_query_add_package(query, package);

			count++;

		}

		razor_package_iterator_destroy(iter);

		if (count == 0)

			fprintf(stderr,

				"no package matches \"%s\"\n", pattern);

	}

	return razor_package_query_finish(query);

}

#define LIST_PACKAGES_ONLY_NAMES 0x01

static void

list_packages(struct razor_package_iterator *iter, uint32_t flags)

{

	struct razor_package *package;

	const char *name, *version, *arch;

	while (razor_package_iterator_next(iter, &package,

					   RAZOR_DETAIL_NAME, &name,

					   RAZOR_DETAIL_VERSION, &version,

					   RAZOR_DETAIL_ARCH, &arch,

					   RAZOR_DETAIL_LAST)) {

		if (flags & LIST_PACKAGES_ONLY_NAMES)

			printf("%s\n", name);

		else

			printf("%s-%s.%s\n", name, version, arch);

	}

}

static int

command_list(int argc, const char *argv[])

{

	struct razor_package_iterator *pi;

	struct razor_error *error = NULL;

	struct razor_set *set;

	uint32_t flags = 0;

	int i = 0;

	if (i < argc && strcmp(argv[i], "--only-names") == 0) {

		flags |= LIST_PACKAGES_ONLY_NAMES;

		i++;

	}

	set = razor_root_open_read_only(install_root, &error);

	if (set == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	pi = create_iterator_from_argv(set, argc - i, argv + i);

	list_packages(pi, flags);

	razor_package_iterator_destroy(pi);

	razor_set_unref(set);

	return 0;

}

static void

list_package_properties(struct razor_set *set,

			struct razor_package *package, uint32_t type)

{

	struct razor_property_iterator *pi;

	struct razor_property *property;

	const char *name, *version;

	uint32_t flags;

	pi = razor_property_iterator_create(set, package);

	while (razor_property_iterator_next(pi, &property,

					    &name, &flags, &version)) {

		if ((flags & RAZOR_PROPERTY_TYPE_MASK) != type)

			continue;

		printf("%s", name);

		if (version[0] != '\0')

			printf(" %s %s",

			       razor_property_relation_to_string(property),

			       version);

		if (flags & ~(RAZOR_PROPERTY_RELATION_MASK | RAZOR_PROPERTY_TYPE_MASK)) {

			printf(" [");

			if (flags & RAZOR_PROPERTY_PRE)

				printf(" pre");

			if (flags & RAZOR_PROPERTY_POST)

				printf(" post");

			if (flags & RAZOR_PROPERTY_PREUN)

				printf(" preun");

			if (flags & RAZOR_PROPERTY_POSTUN)

				printf(" postun");

			printf(" ]");

		}

		printf("\n");

	}

	razor_property_iterator_destroy(pi);

}

static int

list_properties(int argc, const char *argv[], uint32_t type)

{

	struct razor_set *set;

	struct razor_error *error = NULL;

	struct razor_package *package;

	struct razor_package_iterator *pi;

	const char *name, *version, *arch;

	set = razor_root_open_read_only(install_root, &error);

	if (set == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	pi = create_iterator_from_argv(set, argc, argv);

	while (razor_package_iterator_next(pi, &package,

					   RAZOR_DETAIL_NAME, &name,

					   RAZOR_DETAIL_VERSION, &version,

					   RAZOR_DETAIL_ARCH, &arch,

					   RAZOR_DETAIL_LAST))

		list_package_properties(set, package, type);

	razor_package_iterator_destroy(pi);

	razor_set_unref(set);

	return 0;

}

static int

command_list_requires(int argc, const char *argv[])

{

	return list_properties(argc, argv, RAZOR_PROPERTY_REQUIRES);

}

static int

command_list_provides(int argc, const char *argv[])

{

	return list_properties(argc, argv, RAZOR_PROPERTY_PROVIDES);

}

static int

command_list_obsoletes(int argc, const char *argv[])

{

	return list_properties(argc, argv, RAZOR_PROPERTY_OBSOLETES);

}

static int

command_list_conflicts(int argc, const char *argv[])

{

	return list_properties(argc, argv, RAZOR_PROPERTY_CONFLICTS);

}

static int

command_list_scripts(int argc, const char *argv[])

{

	struct razor_set *set;

	struct razor_error *error = NULL;

	struct razor_package *package;

	struct razor_package_iterator *pi;

	const char *preunprog, *preun, *postunprog, *postun;

	set = razor_root_open_read_only(install_root, &error);

	if (set == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	pi = create_iterator_from_argv(set, argc, argv);

	while (razor_package_iterator_next(pi, &package,

					   RAZOR_DETAIL_PREUNPROG, &preunprog,

					   RAZOR_DETAIL_PREUN, &preun,

					   RAZOR_DETAIL_POSTUNPROG, &postunprog,

					   RAZOR_DETAIL_POSTUN, &postun,

					   RAZOR_DETAIL_LAST)) {

		if (preun && *preun) {

			printf("preuninstall scriptlet");

			if (preunprog && *preunprog)

				printf(" (using %s)",preunprog);

			printf(":\n%s\n",preun);

		}

		if (postun && *postun) {

			printf("postuninstall scriptlet");

			if (postunprog && *postunprog)

				printf(" (using %s)",postunprog);

			printf(":\n%s\n",postun);

		}

	}

	razor_package_iterator_destroy(pi);

	razor_set_unref(set);

	return 0;

}

static int

command_list_files(int argc, const char *argv[])

{

	struct razor_error *error = NULL;

	struct razor_set *set;

	set = razor_root_open_read_only(install_root, &error);

	if (set == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	razor_set_list_files(set, argv[0]);

	razor_set_unref(set);

	return 0;

}

static int

command_list_file_packages(int argc, const char *argv[])

{

	struct razor_error *error = NULL;

	struct razor_set *set;

	struct razor_package_iterator *pi;

	set = razor_root_open_read_only(install_root, &error);

	if (set == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	pi = razor_package_iterator_create_for_file(set, argv[0]);

	list_packages(pi, 0);

	razor_package_iterator_destroy(pi);

	razor_set_unref(set);

	return 0;

}

static int

command_list_package_files(int argc, const char *argv[])

{

	struct razor_error *error = NULL;

	struct razor_set *set;

	struct razor_package_iterator *pi;

	struct razor_package *package;

	const char *name, *version, *arch;

	set = razor_root_open_read_only(install_root, &error);

	if (set == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	pi = create_iterator_from_argv(set, argc, argv);

	while (razor_package_iterator_next(pi, &package,

					   RAZOR_DETAIL_NAME, &name,

					   RAZOR_DETAIL_VERSION, &version,

					   RAZOR_DETAIL_ARCH, &arch,

					   RAZOR_DETAIL_LAST))

		razor_set_list_package_files(set, package);

	razor_package_iterator_destroy(pi);

	razor_set_unref(set);

	return 0;

}

static int

list_property_packages(const char *ref_name,

		       const char *ref_version,

		       uint32_t type)

{

	struct razor_error *error = NULL;

	struct razor_set *set;

	struct razor_property *property;

	struct razor_property_iterator *prop_iter;

	struct razor_package_iterator *pkg_iter;

	const char *name, *version;

	uint32_t flags;

	if (ref_name == NULL)

		return 0;

	set = razor_root_open_read_only(install_root, &error);

	if (set == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	prop_iter = razor_property_iterator_create(set, NULL);

	while (razor_property_iterator_next(prop_iter, &property,

					    &name, &flags, &version)) {

		if (strcmp(ref_name, name) != 0)

			continue;

		if (ref_version &&

		    (flags & RAZOR_PROPERTY_RELATION_MASK) == RAZOR_PROPERTY_EQUAL &&

		    strcmp(ref_version, version) != 0)

			continue;

		if ((flags & RAZOR_PROPERTY_TYPE_MASK) != type)

			continue;

		pkg_iter =

			razor_package_iterator_create_for_property(set,

								   property);

		list_packages(pkg_iter, 0);

		razor_package_iterator_destroy(pkg_iter);

	}

	razor_property_iterator_destroy(prop_iter);

	razor_set_unref(set);

	return 0;

}

static int

command_what_requires(int argc, const char *argv[])

{

	return list_property_packages(argv[0], argv[1],

				      RAZOR_PROPERTY_REQUIRES);

}

static int

command_what_provides(int argc, const char *argv[])

{

	return list_property_packages(argv[0], argv[1],

				      RAZOR_PROPERTY_PROVIDES);

}

static int

show_progress(void *clientp,

	      double dltotal, double dlnow, double ultotal, double ulnow)

{

	const char *file = clientp;

	if (!dlnow < dltotal)

		fprintf(stderr, "\rdownloading %s, %dkB/%dkB",

			file, (int) dlnow / 1024, (int) dltotal / 1024);

	return 0;

}

static int

download_if_missing(const char *url, const char *file)

{

#ifndef HAVE_CURL

	return 1;

#else

	CURL *curl;

	struct stat buf;

	char error[256];

	FILE *fp;

	CURLcode res;

	long response;

	curl = curl_easy_init();

	if (curl == NULL)

		return 1;

	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, error);

	curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0);

	curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, show_progress);

	curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, file);

	if (stat(file, &buf) < 0) {

		fp = fopen(file, "wb");

		if (fp == NULL) {

			fprintf(stderr,

				"failed to open %s for writing\n", file);

			return -1;

		}

		curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);

		curl_easy_setopt(curl, CURLOPT_URL, url);

		res = curl_easy_perform(curl);

		fclose(fp);

		if (res != CURLE_OK) {

			fprintf(stderr, "curl error: %s\n", error);

			unlink(file);

			return -1;

		}

		res = curl_easy_getinfo(curl,

					CURLINFO_RESPONSE_CODE, &response);

		if (res != CURLE_OK) {

			fprintf(stderr, "curl error: %s\n", error);

                        unlink(file);

                        return -1;

		}

		if (response != 200) {

			fprintf(stderr, " - failed %ld\n", response);

                        unlink(file);

                        return -1;

		}

		fprintf(stderr, "\n");

	}

	curl_easy_cleanup(curl);

	return 0;

#endif	/* HAVE_CURL */

}

#define YUM_URL "http://download.fedora.redhat.com" \

	"/pub/fedora/linux/development/i386/os"

static int

command_import_yum(int argc, const char *argv[])

{

	int retval;

	struct razor_set *set;

	struct razor_atomic *atomic;

	char buffer[512];

	printf("downloading from %s.\n", yum_url);

	snprintf(buffer, sizeof buffer,

		 "%s/repodata/primary.xml.gz", yum_url);

	if (download_if_missing(buffer, "primary.xml.gz") < 0)

		return -1;

	snprintf(buffer, sizeof buffer,

		 "%s/repodata/filelists.xml.gz", yum_url);

	if (download_if_missing(buffer, "filelists.xml.gz") < 0)

		return -1;

	set = razor_set_create_from_yum();

	if (set == NULL)

		return 1;

	atomic = razor_atomic_open("Yum import repository");

	razor_set_write(set, atomic, rawhide_repo_filename, RAZOR_SECTION_ALL);

	retval = razor_atomic_commit(atomic);

	razor_set_unref(set);

	if (retval)

		fprintf(stderr, "%s\n", razor_atomic_get_error_msg(atomic));

	else

		printf("wrote %s\n", rawhide_repo_filename);

	razor_atomic_destroy(atomic);

	return retval;

}

#if HAVE_RPMLIB

static int

command_import_rpmdb(int argc, const char *argv[])

{

	struct razor_set *set;

	struct razor_root *root;

	struct razor_error *error = NULL;

	struct razor_atomic *atomic;

	int retval;

	root = razor_root_open(install_root, &error);

	if (root == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	set = razor_set_create_from_rpmdb();

	if (set == NULL)

		return 1;

	atomic = razor_atomic_open("Import RPM database");

	retval = razor_root_update(root, set, atomic);

	if (retval)

		fprintf(stderr, "%s\n", razor_atomic_get_error_msg(atomic));

	razor_atomic_destroy(atomic);

	razor_root_close(root);

	return retval;

}

#endif

static int

mark_packages_for_update(struct razor_transaction *trans,

			 struct razor_set *set, const char *pattern)

{

	struct razor_package_iterator *pi;

	struct razor_package *package;

	const char *name;

	int matches = 0;

	pi = razor_package_iterator_create(set);

	while (razor_package_iterator_next(pi, &package,

					   RAZOR_DETAIL_NAME, &name,

					   RAZOR_DETAIL_LAST)) {

		if (pattern && fnmatch(pattern, name, 0) == 0) {

			razor_transaction_update_package(trans, package);

			matches++;

		}

	}

	razor_package_iterator_destroy(pi);

	return matches;

}

static int

mark_packages_for_removal(struct razor_transaction *trans,

			  struct razor_set *set, const char *pattern)

{

	struct razor_package_iterator *pi;

	struct razor_package *package;

	const char *name;

	int matches = 0;

	pi = razor_package_iterator_create(set);

	while (razor_package_iterator_next(pi, &package,

					   RAZOR_DETAIL_NAME, &name,

					   RAZOR_DETAIL_LAST)) {

		if (pattern && fnmatch(pattern, name, 0) == 0) {

			razor_transaction_remove_package(trans, package);

			matches++;

		}

	}

	razor_package_iterator_destroy(pi);

	return matches;

}

static int

command_remove(int argc, const char *argv[])

{

	struct razor_set *system, *upstream, *next;

	struct razor_transaction *trans;

	struct razor_error *error = NULL;

	struct razor_root *root;

	int i, retval;

	root = razor_root_open(install_root, &error);

	if (root == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		return 1;

	}

	system = razor_root_get_system_set(root);

	upstream = razor_set_create_without_root();

	trans = razor_transaction_create(system, upstream);

	razor_set_unref(upstream);

	for (i = 0; i < argc; i++) {

		if (mark_packages_for_removal(trans, system, argv[i]) == 0) {

			fprintf(stderr, "no match for %s\n", argv[i]);

			razor_transaction_destroy(trans);

			razor_root_close(root);

			return 1;

		}

	}

	razor_transaction_resolve(trans);

	retval = razor_transaction_describe(trans);

	if (retval) {

		razor_transaction_destroy(trans);

		razor_root_close(root);

		return 1;

	}

	next = razor_transaction_commit(trans);

	retval = update_system(root, NULL, trans, next, "Remove");

	razor_transaction_destroy(trans);

	razor_root_close(root);

	razor_set_unref(next);

	return retval;

}

static void

print_diff(enum razor_diff_action action,

	   struct razor_package *package,

	   const char *name,

	   const char *version,

	   const char *arch,

	   void *data)

{

	if (action == RAZOR_DIFF_ACTION_ADD)

		printf("install %s-%s.%s\n", name, version, arch);

	if (action == RAZOR_DIFF_ACTION_REMOVE)

		printf("remove %s-%s.%s\n", name, version, arch);

}

static int

command_diff(int argc, const char *argv[])

{

	struct razor_error *error = NULL;

	struct razor_set *set, *updated;

	set = razor_root_open_read_only(install_root, &error);

	if (set)

		updated = razor_set_open(rawhide_repo_filename, 0, &error);

	else

		updated = NULL;

	if (updated == NULL) {

		fprintf(stderr, "%s\n", razor_error_get_msg(error));

		razor_error_free(error);

		if (set)

			razor_set_unref(set);

		return 1;

	}

	razor_set_diff(set, updated, print_diff, NULL);

	razor_set_unref(set);

	razor_set_unref(updated);

	return 0;

}

static int

command_import_rpms(int argc, const char *argv[])

{

	DIR *dir;

	struct dirent *de;

	struct razor_importer *importer;

	struct razor_set *set;

	struct razor_rpm *rpm;

	struct razor_atomic *atomic;

	int len, imported_count = 0;

	char filename[256];

	const char *dirname = argv[0];

	int retval;

	if (dirname == NULL) {

		fprintf(stderr, "usage: razor import-rpms DIR\n");

		return -1;

	}

	dir = opendir(dirname);

	if (dir == NULL) {

		fprintf(stderr, "couldn't read dir %s\n", dirname);

		return -1;

	}

	importer = razor_importer_create();

	while (de = readdir(dir), de != NULL) {

		len = strlen(de->d_name);

		if (len < 5 || strcmp(de->d_name + len - 4, ".rpm") != 0)

			continue;

		snprintf(filename, sizeof filename,

			 "%s/%s", dirname, de->d_name);

		atomic = razor_atomic_open("Read RPM");

		rpm = razor_rpm_open(filename, atomic);

		if (rpm == NULL)

			fprintf(stderr, "%s\n",

				razor_atomic_get_error_msg(atomic));

		razor_atomic_destroy(atomic);

		if (rpm == NULL)

			continue;

		if (razor_importer_add_rpm(importer, rpm)) {

			fprintf(stderr, "couldn't import %s\n", filename);

			break;

		}

		razor_rpm_close(rpm);

		printf("\rimporting %d", ++imported_count);

		fflush(stdout);

	}

	if (de != NULL) {

		razor_importer_destroy(importer);

		return -1;

	}

	printf("\nsaving\n");

	set = razor_importer_finish(importer);

	atomic = razor_atomic_open("Update system database");

	razor_set_write(set, atomic, repo_filename, RAZOR_SECTION_ALL);

	razor_set_unref(set);

	retval = razor_atomic_commit(atomic);

	if (retval)

		fprintf(stderr, "%s\n", razor_atomic_get_error_msg(atomic));

	else

		printf("wrote %s\n", repo_filename);

	razor_atomic_destroy(atomic);

	return retval;

}

static char *

rpm_filename(const char *name, const char *version, const char *arch)

{

 	const char *v;

 	/* Skip epoch */

	v = strchr(version, ':');

 	if (v != NULL)

 		v = v + 1;

 	else

		v = version;

	return razor_concat(name, "-", v, ".", arch, ".rpm", NULL);

}

static int

download_packages(struct razor_set *system, struct razor_set *next)

{

	struct razor_install_iterator *ii;

	struct razor_package *package;

	enum razor_install_action action;

	const char *name, *version, *arch;

	char *file, *url, *s;

	int errors = 0, count;

	ii = razor_set_create_install_iterator(system, next);

	while (razor_install_iterator_next(ii, &package, &action, &count)) {

		if (action != RAZOR_INSTALL_ACTION_ADD)

			continue;

		razor_package_get_details(next, package,

					  RAZOR_DETAIL_NAME, &name,

					  RAZOR_DETAIL_VERSION, &version,

					  RAZOR_DETAIL_ARCH, &arch,

					  RAZOR_DETAIL_LAST);

		s = rpm_filename(name, version, arch);

		url = razor_concat(yum_url, "/Packages/", s, NULL);

		file = razor_concat("rpms/", s, NULL);

		free(s);

		if (download_if_missing(url, file) < 0)

			errors++;

		free(file);

		free(url);

	}

	razor_install_iterator_destroy(ii);

	if (errors > 0) {

		fprintf(stderr, "failed to download %d packages\n", errors);

                return -1;

        }

	return 0;

}

static struct razor_set *

relocate_packages(struct razor_set *set, struct razor_atomic *atomic,

		  struct razor_relocations *relocations)

{

	int i;

	struct razor_importer *importer;

	struct razor_property_iterator *prop_iter;

	struct razor_package_iterator *pkg_iter;

 	struct razor_file_iterator *file_iter;

 	struct razor_package *package;

	struct razor_property *property;

	struct razor_rpm *rpm;

	const char *name, *version, *arch, *summary, *desc, *url, *license;

	const char *preunprog, *preun, *postunprog, *postun;

	const char *install_prefix;

	const char *const *prefixes;

	char *file, *s;

	uint32_t flags;

	importer = razor_importer_create();

	pkg_iter = razor_package_iterator_create(set);

	while (razor_package_iterator_next(pkg_iter, &package,

					   RAZOR_DETAIL_NAME, &name,

					   RAZOR_DETAIL_VERSION, &version,

					   RAZOR_DETAIL_ARCH, &arch,

					   RAZOR_DETAIL_SUMMARY, &summary,

					   RAZOR_DETAIL_DESCRIPTION, &desc,

					   RAZOR_DETAIL_URL, &url,

					   RAZOR_DETAIL_LICENSE, &license,

					   RAZOR_DETAIL_PREUNPROG, &preunprog,

					   RAZOR_DETAIL_PREUN, &preun,

					   RAZOR_DETAIL_POSTUNPROG, &postunprog,

					   RAZOR_DETAIL_POSTUN, &postun,

					   RAZOR_DETAIL_LAST)) {

		s = rpm_filename(name, version, arch);

		file = razor_concat("rpms/", s, NULL);

		free(s);

		rpm = razor_rpm_open(file, atomic);

		free(file);

		if (rpm == NULL) {

			razor_package_iterator_destroy(pkg_iter);

			razor_importer_destroy(importer);

			return NULL;

		}

		razor_relocations_set_rpm(relocations, rpm);

		razor_importer_begin_package(importer, name, version, arch);

		razor_importer_add_details(importer,

					   summary, desc, url, license);

		razor_rpm_get_details(rpm, RAZOR_DETAIL_PREFIXES, &prefixes,

				      RAZOR_DETAIL_LAST);

		for (i = 0; prefixes && prefixes[i]; i++) {

			install_prefix = razor_relocations_apply(relocations,

								 prefixes[i]);

			razor_importer_add_install_prefix(importer,

							  install_prefix);

		}

		razor_rpm_close(rpm);

		prop_iter = razor_property_iterator_create(set, package);

		while (razor_property_iterator_next(prop_iter, &property,

						    &name, &flags, &version))

			razor_importer_add_property(importer,

						    name, flags, version);

		razor_property_iterator_destroy(prop_iter);

		file_iter = razor_file_iterator_create(set, package, 0);

		while (razor_file_iterator_next(file_iter, &name)) {

			name = razor_relocations_apply(relocations, name);

			razor_importer_add_file(importer, name);

		}

		razor_file_iterator_destroy(file_iter);

		razor_importer_add_script(importer, RAZOR_PROPERTY_PREUN,

					  preunprog, preun);

		razor_importer_add_script(importer, RAZOR_PROPERTY_POSTUN,

					  postunprog, postun);

		razor_importer_finish_package(importer);

	}

	razor_package_iterator_destroy(pkg_iter);

	return razor_importer_finish(importer);

}

static int

install_package(struct razor_transaction *trans, struct razor_set *set,

		struct razor_atomic *atomic, struct razor_package *package,

		struct razor_relocations *relocations, int install_count,

		enum razor_stage_type stage)

{

	int retval;

	const char *name, *version, *arch;

	char *file, *s;

	struct razor_rpm *rpm;

	razor_package_get_details(set, package,

				  RAZOR_DETAIL_NAME, &name,

				  RAZOR_DETAIL_VERSION, &version,

				  RAZOR_DETAIL_ARCH, &arch,

				  RAZOR_DETAIL_LAST);

	if (stage & RAZOR_STAGE_SCRIPTS_PRE)

		printf("install %s-%s\n", name, version);

	s = rpm_filename(name, version, arch);

	file = razor_concat("rpms/", s, NULL);

	free(s);

	rpm = razor_rpm_open(file, atomic);

	free(file);

	if (rpm == NULL) {

		fprintf(stderr, "%s\n",

			razor_atomic_get_error_msg(atomic));

		return -1;

	}

	if (relocations)

		razor_rpm_set_relocations(rpm, relocations);

	razor_transaction_fixup_package(trans, package, rpm);

	retval = razor_rpm_install(rpm, atomic, install_root, install_count,

				   stage);

	if (retval < 0) {

		s = rpm_filename(name, version, arch);

		fprintf(stderr, "%s: %s\n", s,

			razor_atomic_get_error_msg(atomic));

		free(s);

	}

	razor_rpm_close(rpm);

	return retval;

}

/*

 * Returns 0 on success, -1 on failure and 1 if a RAZOR_INSTALL_ACTION_COMMIT

 * is met (in which case the action is consumed).

 */

static int

update_packages(struct razor_transaction *trans,

		struct razor_install_iterator *ii, struct razor_set *system,

		struct razor_set *next, struct razor_atomic *atomic,

		struct razor_relocations *relocations,

		enum razor_stage_type stage)

{

	struct razor_package *package;

	enum razor_install_action action;

	int retval = 0, count;

	while (!retval && razor_install_iterator_next(ii, &package, &action,

						      &count)) {

		if (action == RAZOR_INSTALL_ACTION_ADD) {

			if (install_package(trans, next, atomic, package,

					    relocations, count, stage))

				retval = -1;

		} else if (action == RAZOR_INSTALL_ACTION_REMOVE) {

			if (razor_package_remove(system, next, atomic, package,

						 install_root, count, stage))

				retval = -1;

		} else if (action == RAZOR_INSTALL_ACTION_COMMIT)

				retval = 1;

	}

	return retval;

}

static int

update_system(struct razor_root *root, struct razor_relocations *relocations,

	      struct razor_transaction *trans, struct razor_set *next,

	      const char *verb)

{

	struct razor_set *system, *set;

	struct razor_atomic *atomic;