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main.c
author Kristian H?gsberg <krh@redhat.com>
Mon Apr 07 12:38:21 2008 -0400 (2008-04-07)
changeset 205 bb1a6b6578a9
parent 204 60badcb3d8ea
child 206 75d4b6a55593
permissions -rw-r--r--
Silly spelling error. 
     1 #include <stdlib.h>

     2 #include <stddef.h>

     3 #include <stdio.h>

     4 #include <stdint.h>

     5 #include <string.h>

     6 #include <sys/stat.h>

     7 #include <unistd.h>

     8 #include <fcntl.h>

     9 #include <dirent.h>

    10 #include <curl/curl.h>

    11 #include <fnmatch.h>

    12 #include "razor.h"

    13 #include "razor-internal.h"

    14 

    15 static const char system_repo_filename[] = "system.repo";

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

    17 static const char rawhide_repo_filename[] = "rawhide.repo";

    18 static const char updated_repo_filename[] = "system-updated.repo";

    19 static const char razor_root_path[] = "/var/lib/razor";

    20 static const char root[] = "install";

    21 static const char *repo_filename = system_repo_filename;

    22 

    23 static int

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

    25 {

    26 	struct razor_set *set;

    27 	struct razor_package_iterator *pi;

    28 	struct razor_package *package;

    29 	const char *pattern, *name, *version, *arch;

    30 	int only_names = 0, i = 0;

    31 

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

    33 		only_names = 1;

    34 		i++;

    35 	}

    36 

    37 	pattern = argv[i];

    38 	set = razor_set_open(repo_filename);

    39 	pi = razor_package_iterator_create(set);

    40 	while (razor_package_iterator_next(pi, &package,

    41 					   &name, &version, &arch)) {

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

    43 			continue;

    44 

    45 		if (only_names)

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

    47 		else

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

    49 	}

    50 	razor_package_iterator_destroy(pi);

    51 	razor_set_destroy(set);

    52 

    53 	return 0;

    54 }

    55 

    56 static int

    57 list_properties(const char *package_name,

    58 		enum razor_property_type required_type)

    59 {

    60 	struct razor_set *set;

    61 	struct razor_property *property;

    62 	struct razor_package *package;

    63 	struct razor_property_iterator *pi;

    64 	const char *name, *version;

    65 	enum razor_property_type type;

    66 	enum razor_version_relation relation;

    67 

    68 	set = razor_set_open(repo_filename);

    69 	if (package_name)

    70 		package = razor_set_get_package(set, package_name);

    71 	else

    72 		package = NULL;

    73 

    74 	pi = razor_property_iterator_create(set, package);

    75 	while (razor_property_iterator_next(pi, &property,

    76 					    &name, &relation, &version,

    77 					    &type)) {

    78 		if (type != required_type)

    79 			continue;

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

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

    82 		else

    83 			printf("%s %s %s\n", name,

    84 			       razor_version_relations[relation], version);

    85 	}

    86 	razor_property_iterator_destroy(pi);

    87 

    88 	razor_set_destroy(set);

    89 

    90 	return 0;

    91 }

    92 

    93 static int

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

    95 {

    96 	return list_properties(argv[0], RAZOR_PROPERTY_REQUIRES);

    97 }

    98 

    99 static int

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

   101 {

   102 	return list_properties(argv[0], RAZOR_PROPERTY_PROVIDES);

   103 }

   104 

   105 static int

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

   107 {

   108 	return list_properties(argv[0], RAZOR_PROPERTY_OBSOLETES);

   109 }

   110 

   111 static int

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

   113 {

   114 	return list_properties(argv[0], RAZOR_PROPERTY_CONFLICTS);

   115 }

   116 

   117 static int

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

   119 {

   120 	struct razor_set *set;

   121 

   122 	set = razor_set_open(repo_filename);

   123 	if (set == NULL)

   124 		return 1;

   125 	razor_set_list_files(set, argv[0]);

   126 	razor_set_destroy(set);

   127 

   128 	return 0;

   129 }

   130 

   131 static int

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

   133 {

   134 	struct razor_set *set;

   135 	struct razor_package_iterator *pi;

   136 	struct razor_package *package;

   137 	const char *name, *version, *arch;

   138 

   139 	set = razor_set_open(repo_filename);

   140 	if (set == NULL)

   141 		return 1;

   142 

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

   144 	while (razor_package_iterator_next(pi, &package,

   145 					   &name, &version, &arch))

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

   147 	razor_package_iterator_destroy(pi);

   148 

   149 	razor_set_destroy(set);

   150 

   151 	return 0;

   152 }

   153 

   154 static int

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

   156 {

   157 	struct razor_set *set;

   158 

   159 	set = razor_set_open(repo_filename);

   160 	if (set == NULL)

   161 		return 1;

   162 	razor_set_list_package_files(set, argv[0]);

   163 	razor_set_destroy(set);

   164 

   165 	return 0;

   166 }

   167 

   168 static void

   169 list_packages_for_property(struct razor_set *set,

   170 			   struct razor_property *property)

   171 {

   172 	struct razor_package_iterator *pi;

   173 	struct razor_package *package;

   174 	const char *name, *version, *arch;

   175 

   176 	pi = razor_package_iterator_create_for_property(set, property);

   177 	while (razor_package_iterator_next(pi, &package,

   178 					   &name, &version, &arch))

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

   180 	razor_package_iterator_destroy(pi);

   181 }

   182 

   183 static int

   184 list_property_packages(const char *ref_name,

   185 		       const char *ref_version,

   186 		       enum razor_property_type ref_type)

   187 {

   188 	struct razor_set *set;

   189 	struct razor_property *property;

   190 	struct razor_property_iterator *pi;

   191 	const char *name, *version;

   192 	enum razor_property_type type;

   193 	enum razor_version_relation relation;

   194 

   195 	if (ref_name == NULL)

   196 		return 0;

   197 

   198 	set = razor_set_open(repo_filename);

   199 	if (set == NULL)

   200 		return 1;

   201 

   202 	pi = razor_property_iterator_create(set, NULL);

   203 	while (razor_property_iterator_next(pi, &property,

   204 					    &name, &relation, &version,

   205 					    &type)) {

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

   207 			continue;

   208 		if (ref_version && relation == RAZOR_VERSION_EQUAL &&

   209 		    strcmp(ref_version, version) != 0)

   210 			continue;

   211 		if (ref_type != type)

   212 			continue;

   213 

   214 		list_packages_for_property(set, property);

   215 	}

   216 	razor_property_iterator_destroy(pi);

   217 

   218 	return 0;

   219 }

   220 

   221 static int

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

   223 {

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

   225 				      RAZOR_PROPERTY_REQUIRES);

   226 }

   227 

   228 static int

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

   230 {

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

   232 				      RAZOR_PROPERTY_PROVIDES);

   233 }

   234 

   235 static int

   236 show_progress(void *clientp,

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

   238 {

   239 	const char *file = clientp;

   240 

   241 	if (!dlnow < dltotal)

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

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

   244 

   245 	return 0;

   246 }

   247 

   248 static int

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

   250 {

   251 	CURL *curl;

   252 	struct stat buf;

   253 	char error[256];

   254 	FILE *fp;

   255 	CURLcode res;

   256 	long response;

   257 

   258 	curl = curl_easy_init();

   259 	if (curl == NULL)

   260 		return 1;

   261 

   262 	curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, error);

   263 	curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0);

   264 	curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, show_progress);

   265 	curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, file);

   266 

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

   268 		fp = fopen(file, "w");

   269 		curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);

   270 		curl_easy_setopt(curl, CURLOPT_URL, url);

   271 		res = curl_easy_perform(curl);

   272 		fclose(fp);

   273 		if (res != CURLE_OK) {

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

   275 			unlink(file);

   276 			return -1;

   277 		}

   278 		res = curl_easy_getinfo(curl,

   279 					CURLINFO_RESPONSE_CODE, &response);

   280 		if (res != CURLE_OK) {

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

   282                         unlink(file);

   283                         return -1;

   284 		}

   285 		if (response != 200) {

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

   287                         unlink(file);

   288                         return -1;

   289 		}

   290 		fprintf(stderr, "\n");

   291 	}

   292 

   293 	curl_easy_cleanup(curl);

   294 

   295 	return 0;

   296 }

   297 

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

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

   300 

   301 static int

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

   303 {

   304 	struct razor_set *set;

   305 

   306 	if (download_if_missing(REPO_URL "/repodata/primary.xml.gz",

   307 				"primary.xml.gz") < 0)

   308 		return -1;

   309 	if (download_if_missing(REPO_URL "/repodata/filelists.xml.gz",

   310 				"filelists.xml.gz") < 0)

   311 		return -1;

   312 

   313 	set = razor_set_create_from_yum();

   314 	if (set == NULL)

   315 		return 1;

   316 	razor_set_write(set, rawhide_repo_filename);

   317 	razor_set_destroy(set);

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

   319 

   320 	return 0;

   321 }

   322 

   323 static int

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

   325 {

   326 	struct razor_set *set;

   327 

   328 	set = razor_set_create_from_rpmdb();

   329 	if (set == NULL)

   330 		return 1;

   331 	razor_set_write(set, repo_filename);

   332 	razor_set_destroy(set);

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

   334 

   335 	return 0;

   336 }

   337 

   338 static int

   339 command_validate(int argc, const char *argv[])

   340 {

   341 	struct razor_set *set;

   342 

   343 	set = razor_set_open(repo_filename);

   344 	if (set == NULL)

   345 		return 1;

   346 	razor_set_list_unsatisfied(set);

   347 	razor_set_destroy(set);

   348 

   349 	return 0;

   350 }

   351 

   352 static int

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

   354 {

   355 	struct razor_set *set, *upstream;

   356 	struct razor_transaction *trans;

   357 	int errors;

   358 

   359 	set = razor_set_open(repo_filename);

   360 	upstream = razor_set_open(rawhide_repo_filename);

   361 	if (set == NULL || upstream == NULL)

   362 		return 1;

   363 	trans = razor_transaction_create(set, upstream, argc, argv, 0, NULL);

   364 	errors = razor_transaction_describe(trans);

   365 	if (errors)

   366 		return 1;

   367 

   368 	set = razor_transaction_finish(trans);

   369 	razor_set_write(set, updated_repo_filename);

   370 	razor_set_destroy(set);

   371 	razor_set_destroy(upstream);

   372 	printf("wrote system-updated.repo\n");

   373 

   374 	return 0;

   375 }

   376 

   377 static int

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

   379 {

   380 	struct razor_set *set;

   381 	struct razor_transaction *trans;

   382 	int errors;

   383 

   384 	set = razor_set_open(repo_filename);

   385 	if (set == NULL)

   386 		return 1;

   387 	trans = razor_transaction_create(set, NULL, 0, NULL, argc, argv);

   388 	errors = razor_transaction_describe(trans);

   389 	if (errors)

   390 		return 1;

   391 

   392 	set = razor_transaction_finish(trans);

   393 	razor_set_write(set, updated_repo_filename);

   394 	razor_set_destroy(set);

   395 	printf("wrote system-updated.repo\n");

   396 

   397 	return 0;

   398 }

   399 

   400 static void

   401 print_diff(const char *name,

   402 	   const char *old_version, const char *new_version, const char *arch,

   403 	   void *data)

   404 {

   405 	if (old_version)

   406 		printf("removing %s %s\n", name, old_version);

   407 	else

   408 		printf("install %s %s\n", name, new_version);

   409 }

   410 

   411 static int

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

   413 {

   414 	struct razor_set *set, *updated;

   415 

   416 	set = razor_set_open(repo_filename);

   417 	updated = razor_set_open(updated_repo_filename);

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

   419 		return 1;

   420 

   421 	razor_set_diff(set, updated, print_diff, NULL);	

   422 

   423 	razor_set_destroy(set);

   424 	razor_set_destroy(updated);

   425 

   426 	return 0;

   427 }

   428 

   429 static int

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

   431 {

   432 	DIR *dir;

   433 	struct dirent *de;

   434 	struct razor_importer *importer;

   435 	struct razor_set *set;

   436 	struct razor_rpm *rpm;

   437 	int len;

   438 	char filename[256];

   439 	const char *dirname = argv[0];

   440 

   441 	if (dirname == NULL) {

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

   443 		return -1;

   444 	}

   445 

   446 	dir = opendir(dirname);

   447 	if (dir == NULL) {

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

   449 		return -1;

   450 	}

   451 

   452 	importer = razor_importer_new();

   453 

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

   455 		len = strlen(de->d_name);

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

   457 		    continue;

   458 		snprintf(filename, sizeof filename,

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

   460 		rpm = razor_rpm_open(filename);

   461 		if (rpm == NULL) {

   462 			fprintf(stderr,

   463 				"failed to open rpm \"%s\"\n", filename);

   464 			continue;

   465 		}

   466 		if (razor_importer_add_rpm(importer, rpm)) {

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

   468 			break;

   469 		}

   470 		razor_rpm_close(rpm);

   471 	}

   472 

   473 	if (de != NULL) {

   474 		razor_importer_destroy(importer);

   475 		return -1;

   476 	}

   477 

   478 	set = razor_importer_finish(importer);

   479 

   480 	razor_set_write(set, repo_filename);

   481 	razor_set_destroy(set);

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

   483 

   484 	return 0;

   485 }

   486 

   487 static void

   488 download_package(const char *name,

   489 		 const char *old_version,

   490 		 const char *new_version,

   491 		 const char *arch,

   492 		 void *data)

   493 {

   494 	char file[PATH_MAX], url[256];

   495 	const char *v;

   496 	int *errors = data;

   497 

   498 	if (old_version)

   499 		return;

   500 

   501 	/* Skip epoch */

   502 	v = strchr(new_version, ':');

   503 	if (v != NULL)

   504 		v = v + 1;

   505 	else

   506 		v = new_version;

   507 

   508 	snprintf(url, sizeof url,

   509 		 REPO_URL "/Packages/%s-%s.%s.rpm", name, v, arch);

   510 	snprintf(file, sizeof file,

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

   512 	if (download_if_missing(url, file) < 0)

   513 		(*errors)++;

   514 }

   515 

   516 static void

   517 install_package(const char *name,

   518 		const char *old_version,

   519 		const char *new_version,

   520 		const char *arch,

   521 		void *data)

   522 {

   523 	const char *v, *root = data;

   524 	char file[PATH_MAX];

   525 	struct razor_rpm *rpm;

   526 

   527 	if (old_version) {

   528 		printf("removing %s %s not handled\n", name, old_version);

   529 		return;

   530 	}

   531 

   532 	/* Skip epoch */

   533 	v = strchr(new_version, ':');

   534 	if (v != NULL)

   535 		v = v + 1;

   536 	else

   537 		v = new_version;

   538 

   539 	printf("install %s %s\n", name, v);

   540 	snprintf(file, sizeof file, "rpms/%s-%s.%s.rpm", name, v, arch);

   541 

   542  	rpm = razor_rpm_open(file);

   543 	if (rpm == NULL) {

   544 		fprintf(stderr, "failed to open rpm %s\n", file);

   545 		return;

   546 	}

   547 	if (razor_rpm_install(rpm, root) < 0) {

   548 		fprintf(stderr,

   549 			"failed to install rpm %s\n", file);

   550 		return;

   551 	}

   552 	razor_rpm_close(rpm);

   553 }

   554 

   555 static int

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

   557 {

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

   559 	struct razor_transaction *trans;

   560 	char path[PATH_MAX], new_path[PATH_MAX];

   561 	int errors, fd;

   562 

   563 	/* Create the new next repo file up front to ensure exclusive

   564 	 * access. */

   565 	snprintf(new_path, sizeof new_path,

   566 		 "%s%s/%s", root, razor_root_path, next_repo_filename);

   567 	fd = open(new_path, O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0666);

   568 	if (fd < 0) {

   569 		fprintf(stderr, "failed to get lock file, "

   570 			"maybe previous operation crashed?\n");

   571 

   572 		/* FIXME: Use fcntl advisory locking to figure out

   573 		 * whether previous operation crashed or is still in

   574 		 * progress. */

   575 

   576 		return -1;

   577 	}

   578 

   579 	upstream = razor_set_open(rawhide_repo_filename);

   580 	snprintf(path, sizeof path,

   581 		 "%s%s/%s", root, razor_root_path, system_repo_filename);

   582 	system = razor_set_open(path);

   583 	if (system == NULL || upstream == NULL) {

   584 		unlink(new_path);

   585 		return 1;

   586 	}

   587 	trans = razor_transaction_create(system, upstream,

   588 					 argc, argv, 0, NULL);

   589 	errors = razor_transaction_describe(trans);

   590 	if (errors) {

   591 		unlink(new_path);

   592 		return 1;

   593 	}

   594 

   595 	next = razor_transaction_finish(trans);

   596 

   597 	razor_set_write_to_fd(next, fd);

   598 	printf("wrote %s\n", new_path);

   599 

   600 	razor_set_diff(system, next, download_package, &errors);

   601 	if (errors > 0) {

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

   603 		unlink(new_path);

   604                 return 1;

   605         }

   606 

   607 	/* FIXME: We need to figure out the right install order here,

   608 	 * so the post and pre scripts can run. */

   609 	razor_set_diff(system, next, install_package, (void *) root);

   610 

   611 	razor_set_destroy(next);

   612 	razor_set_destroy(system);

   613 	razor_set_destroy(upstream);

   614 

   615 	/* Make it so. */

   616 	rename(new_path, path);

   617 	printf("renamed %s to %s\n", new_path, path);

   618 

   619 	return 0;

   620 }

   621 

   622 static int

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

   624 {

   625 	struct stat buf;

   626 	struct razor_set *set;

   627 	char path[PATH_MAX];

   628 

   629 	if (stat(root, &buf) < 0) {

   630 		if (mkdir(root, 0777) < 0) {

   631 			fprintf(stderr,

   632 				"could not create install root \"%s\"\n",

   633 				root);

   634 			return -1;

   635 		}

   636 		fprintf(stderr, "created install root \"%s\"\n", root);

   637 	} else if (!S_ISDIR(buf.st_mode)) {

   638 		fprintf(stderr,

   639 			"install root \"%s\" exists, but is not a directory\n",

   640 			root);

   641 		return -1;

   642 	}

   643 

   644 	if (razor_create_dir(root, razor_root_path) < 0) {

   645 		fprintf(stderr, "could not create %s%s\n",

   646 			root, razor_root_path);

   647 		return -1;

   648 	}

   649 

   650 	set = razor_set_create();

   651 	snprintf(path, sizeof path, "%s%s/%s",

   652 		 root, razor_root_path, system_repo_filename);

   653 	if (razor_set_write(set, path) < 0) {

   654 		fprintf(stderr, "could not write initial package set\n");

   655 		return -1;

   656 	}

   657 	razor_set_destroy(set);

   658 

   659 	return 0;

   660 }

   661 

   662 static int

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

   664 {

   665 	struct razor_set *set;

   666 	struct razor_package_iterator *pi;

   667 	struct razor_package *package;

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

   669 	char url[256], file[256];

   670 	int matches = 0;

   671 

   672 	set = razor_set_open(rawhide_repo_filename);

   673 	pi = razor_package_iterator_create(set);

   674 	while (razor_package_iterator_next(pi, &package,

   675 					   &name, &version, &arch)) {

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

   677 			continue;

   678 

   679 		matches++;

   680 		snprintf(url, sizeof url,

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

   682 			 name, version, arch);

   683 		snprintf(file, sizeof file,

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

   685 		download_if_missing(url, file);

   686 	}

   687 	razor_package_iterator_destroy(pi);

   688 	razor_set_destroy(set);

   689 

   690 	if (matches == 0)

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

   692 	else if (matches == 1)

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

   694 	else

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

   696 

   697 	return 0;

   698 }

   699 

   700 static struct {

   701 	const char *name;

   702 	const char *description;

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

   704 } razor_commands[] = {

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

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

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

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

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

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

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

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

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

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

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

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

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

   718 	{ "validate", "validate a package set", command_validate },

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

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

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

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

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

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

   725 };

   726 

   727 static int

   728 usage(void)

   729 {

   730 	int i;

   731 

   732 	printf("usage:\n");

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

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

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

   736 

   737 	return 1;

   738 }

   739 

   740 int

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

   742 {

   743 	char *repo;

   744 	int i;

   745 

   746 	repo = getenv("RAZOR_REPO");

   747 	if (repo != NULL)

   748 		repo_filename = repo;

   749 

   750 	if (argc < 2)

   751 		return usage();

   752 

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

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

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

   756 

   757 	return usage();

   758 }
razor