/*

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

  * Copyright (C) 2008  Red Hat, Inc

  * Copyright (C) 2009, 2011  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]))

 enum update_pass_type {

     UPDATE_PASS_PRE_REMOVE,

     UPDATE_PASS_MAIN,

     UPDATE_PASS_POST_INSTALL,

 };

 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 update_pass_type stage);

 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_atomic *atomic;

 	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++;

 	}

 	atomic = razor_atomic_open("List installed packages");

 	set = razor_root_open_read_only(install_root, atomic);

 	if (set == NULL) {

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

 		razor_atomic_destroy(atomic);

 		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);

 	razor_atomic_destroy(atomic);

 	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_atomic *atomic;

 	struct razor_package *package;

 	struct razor_package_iterator *pi;

 	const char *name, *version, *arch;

 	atomic = razor_atomic_open("List package properties");

 	set = razor_root_open_read_only(install_root, atomic);

 	if (set == NULL) {

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

 		razor_atomic_destroy(atomic);

 		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);

 	razor_atomic_destroy(atomic);

 	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_atomic *atomic;

 	struct razor_package *package;

 	struct razor_package_iterator *pi;

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

 	atomic = razor_atomic_open("List package scripts");

 	set = razor_root_open_read_only(install_root, atomic);

 	if (set == NULL) {

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

 		razor_atomic_destroy(atomic);

 		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);

 	razor_atomic_destroy(atomic);

 	return 0;

 }

 static int

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

 {

 	struct razor_atomic *atomic;

 	struct razor_set *set;

 	atomic = razor_atomic_open("List package files");

 	set = razor_root_open_read_only(install_root, atomic);

 	if (set == NULL) {

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

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	razor_set_list_files(set, argv[0]);

 	razor_set_unref(set);

 	razor_atomic_destroy(atomic);

 	return 0;

 }

 static int

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

 {

 	struct razor_atomic *atomic;

 	struct razor_set *set;

 	struct razor_package_iterator *pi;

 	atomic = razor_atomic_open("List file packages");

 	set = razor_root_open_read_only(install_root, atomic);

 	if (set == NULL) {

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

 		razor_atomic_destroy(atomic);

 		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);

 	razor_atomic_destroy(atomic);

 	return 0;

 }

 static int

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

 {

 	struct razor_atomic *atomic;

 	struct razor_set *set;

 	struct razor_package_iterator *pi;

 	struct razor_package *package;

 	const char *name, *version, *arch;

 	atomic = razor_atomic_open("List package files");

 	set = razor_root_open_read_only(install_root, atomic);

 	if (set == NULL) {

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

 		razor_atomic_destroy(atomic);

 		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);

 	razor_atomic_destroy(atomic);

 	return 0;

 }

 static int

 list_property_packages(const char *ref_name,

 		       const char *ref_version,

 		       uint32_t type)

 {

 	struct razor_atomic *atomic;

 	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;

 	atomic = razor_atomic_open("List package properties");

 	set = razor_root_open_read_only(install_root, atomic);

 	if (set == NULL) {

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

 		razor_atomic_destroy(atomic);

 		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);

 	razor_atomic_destroy(atomic);

 	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_atomic *atomic;

 	int retval;

 	atomic = razor_atomic_open("Import RPM database");

 	root = razor_root_open(install_root, atomic);

 	if (root == NULL) {

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

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	set = razor_set_create_from_rpmdb();

 	if (set == NULL)

 		return 1;

 	razor_root_update(root, set);

 	retval = razor_root_commit(root);

 	if (retval)

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

 	razor_atomic_destroy(atomic);

 	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_root *root;

 	struct razor_set *system, *upstream, *next;

 	struct razor_transaction *trans;

 	struct razor_atomic *atomic;

 	struct razor_install_iterator *ii;

 	int i, retval;

 	atomic = razor_atomic_open("Remove packages");

 	root = razor_root_open(install_root, atomic);

 	system = razor_set_ref(razor_root_get_system_set(root));

 	if (system == NULL) {

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

 		razor_root_close(root);

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	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_set_unref(system);

 			razor_root_close(root);

 			razor_atomic_destroy(atomic);

 			return 1;

 		}

 	}

 	razor_transaction_resolve(trans);

 	retval = razor_transaction_describe(trans);

 	if (retval) {

 		razor_transaction_destroy(trans);

 		razor_set_unref(system);

 		razor_root_close(root);

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	next = razor_transaction_commit(trans);

 	ii = razor_set_create_install_iterator(system, next);

 	retval = update_packages(trans, ii, system, next, atomic, NULL,

 				 UPDATE_PASS_PRE_REMOVE);

 	if (retval)

 		fprintf(stderr, "Remove aborted\n");

 	else {

 		update_packages(trans, ii, system, next, atomic, NULL,

 				UPDATE_PASS_MAIN);

 		razor_root_update(root, next);

 		(void)razor_root_commit(root);

 		retval = razor_atomic_commit(atomic);

 		if (retval)

 			fprintf(stderr, "%s\n",

 				razor_atomic_get_error_msg(atomic));

 	}

 	razor_install_iterator_destroy(ii);

 	razor_transaction_destroy(trans);

 	razor_atomic_destroy(atomic);

 	razor_set_unref(system);

 	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_atomic *atomic;

 	struct razor_set *set, *updated;

 	atomic = razor_atomic_open("Show package differences");

 	set = razor_root_open_read_only(install_root, atomic);

 	updated = razor_set_open(rawhide_repo_filename, atomic);

 	if (set == NULL || updated == NULL) {

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

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	razor_set_diff(set, updated, print_diff, NULL);

 	razor_set_unref(set);

 	razor_set_unref(updated);

 	razor_atomic_destroy(atomic);

 	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_REMOVE)

 			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;

 }

 /*

  * In the most general case, there should be three passes:

  *

  * 1) For each package to be removed, run %preun

  *

  * 2) For each package:

  *	If the package is to be installed, run %pre

  *	Update the files on disk

  *	If the package has been removed, run %postun

  *

  * 3) For each packge installed, run %post

  *

  * This guarantees that:

  *   a)	Save where dependency loops make it impossible, at the time

  *	%pre is run, all required packages are installed (although

  *	their %post script may not have been run). We should support

  *	Requires(%pre) to allow packagers to describe their requirements

  *	more accurately and avoid unnecessary dependency loops.

  *   b)	At the time %preun is run, all required packages are installed.

  *	Supporting Requires(%preun) would make this more complicated

  *	since we might have to install a package in order to remove

  *	another one. For now, treating Requires(%preun) as Requires

  *	seems more sensible.

  *   c)	At the time %post is run, all required packages are installed.

  *	Supporting Requires(%post) would allow us to remove a package

  *	that was only needed to install another, but there seems no

  *	obvious advantage.

  *   d)	Save where dependency loops make it impossible, at the time

  *	%postun is run, all required packages are installed. Again,

  *	we should support Requires(%postun) to avoid unnecessary

  *	dependency loops.

  *

  * Notes:

  *	rpm treats %pre and %preun script failures as fatal errors

  *	and %post and %postun failures as warnings.

  */

 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 update_pass_type pass)

 {

 	struct razor_package *package;

 	enum razor_install_action action;

 	int retval = 0, count;

 	enum razor_stage_type remove_stage, add_stage;

 	switch (pass) {

 	case UPDATE_PASS_PRE_REMOVE:

 		add_stage = 0;

 		remove_stage = RAZOR_STAGE_SCRIPTS_PRE;

 		break;

 	case UPDATE_PASS_MAIN:

 		add_stage = RAZOR_STAGE_SCRIPTS_PRE | RAZOR_STAGE_FILES;

 		remove_stage = RAZOR_STAGE_FILES | RAZOR_STAGE_SCRIPTS_POST;

 		break;

 	case UPDATE_PASS_POST_INSTALL:

 		add_stage = RAZOR_STAGE_SCRIPTS_POST;

 		remove_stage = 0;

 		break;

 	}

 	razor_install_iterator_rewind(ii);

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

 						      &count)) {

 		if (action == RAZOR_INSTALL_ACTION_ADD && add_stage)

 			retval = install_package(trans, next, atomic, package,

 						 relocations, count, add_stage);

 		else if (action == RAZOR_INSTALL_ACTION_REMOVE && remove_stage)

 			retval = razor_package_remove(system, next, atomic,

 						      package, install_root,

 						      count, remove_stage);

 	}

 	return retval;

 }

 static int

 command_install_or_update(int argc, const char *argv[], int do_update)

 {

 	struct razor_root *root;

 	struct razor_relocations *relocations=NULL;

 	struct razor_set *system, *upstream, *next, *set;

 	struct razor_transaction *trans;

 	struct razor_atomic *atomic;

 	struct razor_install_iterator *ii;

 	int i, retval, len, dependencies = 1;

 	char *oldpath;

 	if (do_update)

 		atomic = razor_atomic_open("Update packages");

 	else

 		atomic = razor_atomic_open("Install packages");

 	root = razor_root_open(install_root, atomic);

 	if (root == NULL) {

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

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

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

 		if (strcmp(argv[i], "--no-dependencies") == 0)

 			dependencies = 0;

 		else if (strcmp(argv[i], "--relocate") == 0) {

 			i++;

 			if (i >= argc || strchr(argv[i], '=') == NULL) {

 				fprintf(stderr,

 				    "Usage: razor %s [OPTION...] RPM\n",

 				    do_update ? "update" : "install");

 				fprintf(stderr, "Options:\n");

 				fprintf(stderr, "    [--no-dependencies]\n");

 				fprintf(stderr,

 				    "    [--relocate OLDPATH=NEWPATH] RPM\n");

 				return -1;

 			}

 			len = strchr(argv[i], '=') - argv[i];

 			oldpath = malloc(len + 1);

 			strncpy(oldpath, argv[i], len);

 			oldpath[len] = '\0';

 			if (!relocations)

 			       relocations = razor_relocations_create();

 			razor_relocations_add(relocations, oldpath,

 					      argv[i] + len + 1);

 			free(oldpath);

 		} else

 			break;

 	}

 	upstream = razor_set_open(rawhide_repo_filename, atomic);

 	if (upstream == NULL) {

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

 		razor_root_close(root);

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	if (relocations) {

 		set = relocate_packages(upstream, atomic, relocations);

 		if (set == NULL) {

 			fprintf(stderr, "%s\n",

 				razor_atomic_get_error_msg(atomic));

 			razor_root_close(root);

 			razor_atomic_destroy(atomic);

 			razor_set_unref(upstream);

 			return 1;

 		}

 		razor_set_unref(upstream);

 		upstream = set;

 	}

 	system = razor_set_ref(razor_root_get_system_set(root));

 	trans = razor_transaction_create(system, upstream);

 	if (i == argc && do_update)

 		razor_transaction_update_all(trans);

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

 		if (do_update &&

 		    mark_packages_for_update(trans, system, argv[i]))

 			continue;

 		if (mark_packages_for_update(trans, upstream, argv[i]) == 0) {

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

 			razor_transaction_destroy(trans);

 			razor_set_unref(upstream);

 			razor_set_unref(system);

 			razor_root_close(root);

 			razor_atomic_destroy(atomic);

 			return 1;

 		}

 	}

 	if (dependencies) {

 		razor_transaction_resolve(trans);

 		if (razor_transaction_describe(trans) > 0) {

 			razor_transaction_destroy(trans);

 			razor_set_unref(upstream);

 			razor_set_unref(system);

 			razor_root_close(root);

 			razor_atomic_destroy(atomic);

 			return 1;

 		}

 	}

 	if (razor_atomic_create_dir(atomic, "rpms",

 				    S_IRWXU | S_IRWXG | S_IRWXO)) {

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

 		razor_transaction_destroy(trans);

 		razor_set_unref(upstream);

 		razor_set_unref(system);

 		razor_root_close(root);

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	next = razor_transaction_commit(trans);

 	if (download_packages(system, next) < 0) {

 		razor_set_unref(next);

 		razor_transaction_destroy(trans);

 		razor_set_unref(upstream);

 		razor_set_unref(system);

 		razor_root_close(root);

 		razor_atomic_destroy(atomic);

                 return 1;

         }

 	ii = razor_set_create_install_iterator(system, next);

 	retval = update_packages(trans, ii, system, next, atomic, relocations,

 				 UPDATE_PASS_PRE_REMOVE);

 	if (retval)

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

 			do_update ? "Update" : "Install");

 	else {

 		update_packages(trans, ii, system, next, atomic, relocations,

 				UPDATE_PASS_MAIN);

 		razor_root_update(root, next);

 		razor_set_unref(upstream);

 		(void)razor_root_commit(root);

 		retval = razor_atomic_commit(atomic);

 		if (retval)

 			fprintf(stderr, "%s\n",

 				razor_atomic_get_error_msg(atomic));

 		else

 			(void)update_packages(trans, ii, system, next, atomic,

 					      relocations,

 					      UPDATE_PASS_POST_INSTALL);

 	}

 	razor_transaction_destroy(trans);

 	if (relocations)

 		razor_relocations_destroy(relocations);

 	razor_install_iterator_destroy(ii);

 	razor_atomic_destroy(atomic);

 	razor_set_unref(next);

 	razor_set_unref(system);

 	return retval;

 }

 static int

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

 {

 	return command_install_or_update(argc, argv, 1);

 }

 static int

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

 {

 	return command_install_or_update(argc, argv, 0);

 }

 static int

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

 {

 	return razor_root_create(install_root);

 }

 static int

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

 {

 	struct razor_atomic *atomic;

 	struct razor_set *set;

 	struct razor_package_iterator *pi;

 	struct razor_package *package;

 	const char *pattern = argv[0], *name, *version, *arch;

 	char url[256], file[256];

 	int matches = 0;

 	atomic = razor_atomic_open("Download packages");

 	if (razor_atomic_create_dir(atomic, "rpms", 

 				    S_IRWXU | S_IRWXG | S_IRWXO)) {

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

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	set = razor_set_open(rawhide_repo_filename, atomic);

 	if (razor_atomic_commit(atomic)) {

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

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	razor_atomic_destroy(atomic);

 	pi = razor_package_iterator_create(set);

 	while (razor_package_iterator_next(pi, &package,

 					   RAZOR_DETAIL_NAME, &name,

 					   RAZOR_DETAIL_VERSION, &version,

 					   RAZOR_DETAIL_ARCH, &arch,

 					   RAZOR_DETAIL_LAST)) {

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

 			continue;

 		matches++;

 		snprintf(url, sizeof url,

 			 "%s/Packages/%s-%s.%s.rpm",

 			 yum_url, name, version, arch);

 		snprintf(file, sizeof file,

 			 "rpms/%s-%s.%s.rpm", name, version, arch);

 		download_if_missing(url, file);

 	}

 	razor_package_iterator_destroy(pi);

 	razor_set_unref(set);

 	if (matches == 0)

 		fprintf(stderr, "no packages matched \"%s\"\n", pattern);

 	else if (matches == 1)

 		fprintf(stderr, "downloaded 1 package\n");

 	else

 		fprintf(stderr, "downloaded %d packages\n", matches);

 	return 0;

 }

 static int

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

 {

 	struct razor_atomic *atomic;

 	struct razor_set *set;

 	struct razor_package_iterator *pi;

 	struct razor_package *package;

 	const char *pattern = argv[0], *name, *version, *arch;

 	const char *summary, *description, *url, *license;

 	atomic = razor_atomic_open("Package info");

 	set = razor_root_open_read_only(install_root, atomic);

 	if (set == NULL) {

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

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	pi = razor_package_iterator_create(set);

 	while (razor_package_iterator_next(pi, &package,

 					   RAZOR_DETAIL_NAME, &name,

 					   RAZOR_DETAIL_VERSION, &version,

 					   RAZOR_DETAIL_ARCH, &arch,

 					   RAZOR_DETAIL_LAST)) {

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

 			continue;

 		razor_package_get_details (set, package,

 					   RAZOR_DETAIL_SUMMARY, &summary,

 					   RAZOR_DETAIL_DESCRIPTION, &description,

 					   RAZOR_DETAIL_URL, &url,

 					   RAZOR_DETAIL_LICENSE, &license,

 					   RAZOR_DETAIL_LAST);

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

 		printf ("Arch:        %s\n", arch);

 		printf ("Version:     %s\n", version);

 		printf ("URL:         %s\n", url);

 		printf ("License:     %s\n", license);

 		printf ("Summary:     %s\n", summary);

 		printf ("Description:\n");

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

 		printf ("\n");

 	}

 	razor_package_iterator_destroy(pi);

 	razor_set_unref(set);

 	razor_atomic_destroy(atomic);

 	return 0;

 }

 #define SEARCH_MAX 256

 static int

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

 {

 	struct razor_atomic *atomic;

 	struct razor_set *set;

 	struct razor_package_iterator *pi;

 	struct razor_package *package;

 	char pattern[SEARCH_MAX];

 	const char *name, *version, *arch;

 	const char *summary, *description, *url, *license;

 	if (!argv[0]) {

 		fprintf(stderr, "must specify a search term\n");

 		return 1;

 	}

 	snprintf(pattern, sizeof pattern, "*%s*", argv[0]);

 	atomic = razor_atomic_open("Search packages");

 	set = razor_set_open(rawhide_repo_filename, atomic);

 	if (set == NULL || razor_atomic_commit(atomic)) {

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

 		razor_atomic_destroy(atomic);

 		return 1;

 	}

 	razor_atomic_destroy(atomic);

 	pi = razor_package_iterator_create(set);

 	while (razor_package_iterator_next(pi, &package,

 					   RAZOR_DETAIL_NAME, &name,

 					   RAZOR_DETAIL_VERSION, &version,

 					   RAZOR_DETAIL_ARCH, &arch,

 					   RAZOR_DETAIL_SUMMARY, &summary,

 					   RAZOR_DETAIL_DESCRIPTION, &description,

 					   RAZOR_DETAIL_URL, &url,

 					   RAZOR_DETAIL_LICENSE, &license,

 					   RAZOR_DETAIL_LAST)) {

 		if (!fnmatch(pattern, name, FNM_CASEFOLD) ||

 		    !fnmatch(pattern, url, FNM_CASEFOLD) ||

 		    !fnmatch(pattern, summary, FNM_CASEFOLD) ||

 		    !fnmatch(pattern, description, FNM_CASEFOLD))

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

 	}

 	razor_package_iterator_destroy(pi);

 	razor_set_unref(set);

 	return 0;

 }

 static struct {

 	const char *name;

 	const char *description;

 	int (*func)(int argc, const char *argv[]);

 } razor_commands[] = {

 	{ "list", "list all packages", command_list },

 	{ "list-requires", "list all requires for the given package", command_list_requires },

 	{ "list-provides", "list all provides for the given package", command_list_provides },

 	{ "list-obsoletes", "list all obsoletes for the given package", command_list_obsoletes },

 	{ "list-conflicts", "list all conflicts for the given package", command_list_conflicts },

 	{ "list-scripts", "list all scripts for the given package", command_list_scripts },

 	{ "list-files", "list files for package set", command_list_files },

 	{ "list-file-packages", "list packages owning file", command_list_file_packages },

 	{ "list-package-files", "list files in package", command_list_package_files },

 	{ "what-requires", "list the packages that have the given requires", command_what_requires },

 	{ "what-provides", "list the packages that have the given provides", command_what_provides },

 	{ "import-yum", "import yum metadata files", command_import_yum },

 #if HAVE_RPMLIB

 	{ "import-rpmdb", "import the system rpm database", command_import_rpmdb },

 #endif

 	{ "import-rpms", "import rpms from the given directory", command_import_rpms },

 	{ "update", "update all or specified packages", command_update },

 	{ "remove", "remove specified packages", command_remove },

 	{ "diff", "show diff between two package sets", command_diff },

 	{ "install", "install rpm", command_install },

 	{ "init", "init razor root", command_init },

 	{ "download", "download packages", command_download },

 	{ "info", "display package details", command_info },

 	{ "search", "search package details", command_search }

 };

 static int

 usage(void)

 {

 	int i;

 	printf("usage:\n");

 	for (i = 0; i < ARRAY_SIZE(razor_commands); i++)

 		printf("  %-20s%s\n",

 		       razor_commands[i].name, razor_commands[i].description);

 	return 1;

 }

 int

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

 {

 	char *repo, *root;

 	int i;

 	repo = getenv("RAZOR_REPO");

 	if (repo != NULL)

 		repo_filename = repo;

 	root = getenv("RAZOR_ROOT");

 	if (root != NULL)

 		install_root = root;

 	yum_url = getenv("YUM_URL");

 	if (yum_url == NULL)

 		yum_url = YUM_URL;

 	if (getenv("RAZOR_NO_ROOT_NAME_CHECKS"))

 		razor_disable_root_name_checks(1);

 	if (argc < 2)

 		return usage();

 	for (i = 0; i < ARRAY_SIZE(razor_commands); i++)

 		if (strcmp(razor_commands[i].name, argv[1]) == 0)

 			return razor_commands[i].func(argc - 2, argv + 2);

 	return usage();

 }