src/test/test-path-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2013 Zbigniew Jędrzejewski-Szmek
   6 ***/
   7
   8 #include <stdio.h>
   9 #include <unistd.h>
  10
  11 #include "alloc-util.h"
  12 #include "fd-util.h"
  13 #include "macro.h"
  14 #include "mount-util.h"
  15 #include "path-util.h"
  16 #include "rm-rf.h"
  17 #include "stat-util.h"
  18 #include "string-util.h"
  19 #include "strv.h"
  20 #include "util.h"
  21
  22 #define test_path_compare(a, b, result) {                 \
  23                 assert_se(path_compare(a, b) == result);  \
  24                 assert_se(path_compare(b, a) == -result); \
  25                 assert_se(path_equal(a, b) == !result);   \
  26                 assert_se(path_equal(b, a) == !result);   \
  27         }
  28
  29 static void test_path(void) {
  30         _cleanup_close_ int fd = -1;
  31
  32         test_path_compare("/goo", "/goo", 0);
  33         test_path_compare("/goo", "/goo", 0);
  34         test_path_compare("//goo", "/goo", 0);
  35         test_path_compare("//goo/////", "/goo", 0);
  36         test_path_compare("goo/////", "goo", 0);
  37
  38         test_path_compare("/goo/boo", "/goo//boo", 0);
  39         test_path_compare("//goo/boo", "/goo/boo//", 0);
  40
  41         test_path_compare("/", "///", 0);
  42
  43         test_path_compare("/x", "x/", 1);
  44         test_path_compare("x/", "/", -1);
  45
  46         test_path_compare("/x/./y", "x/y", 1);
  47         test_path_compare("x/.y", "x/y", -1);
  48
  49         test_path_compare("foo", "/foo", -1);
  50         test_path_compare("/foo", "/foo/bar", -1);
  51         test_path_compare("/foo/aaa", "/foo/b", -1);
  52         test_path_compare("/foo/aaa", "/foo/b/a", -1);
  53         test_path_compare("/foo/a", "/foo/aaa", -1);
  54         test_path_compare("/foo/a/b", "/foo/aaa", -1);
  55
  56         assert_se(path_is_absolute("/"));
  57         assert_se(!path_is_absolute("./"));
  58
  59         assert_se(is_path("/dir"));
  60         assert_se(is_path("a/b"));
  61         assert_se(!is_path("."));
  62
  63         assert_se(streq(basename("./aa/bb/../file.da."), "file.da."));
  64         assert_se(streq(basename("/aa///.file"), ".file"));
  65         assert_se(streq(basename("/aa///file..."), "file..."));
  66         assert_se(streq(basename("file.../"), ""));
  67
  68         fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY|O_NOCTTY);
  69         assert_se(fd >= 0);
  70         assert_se(fd_is_mount_point(fd, "/", 0) > 0);
  71
  72         {
  73                 char p1[] = "aaa/bbb////ccc";
  74                 char p2[] = "//aaa/.////ccc";
  75                 char p3[] = "/./";
  76
  77                 assert_se(path_equal(path_kill_slashes(p1), "aaa/bbb/ccc"));
  78                 assert_se(path_equal(path_kill_slashes(p2), "/aaa/./ccc"));
  79                 assert_se(path_equal(path_kill_slashes(p3), "/./"));
  80         }
  81
  82         assert_se(PATH_IN_SET("/bin", "/", "/bin", "/foo"));
  83         assert_se(PATH_IN_SET("/bin", "/bin"));
  84         assert_se(PATH_IN_SET("/bin", "/foo/bar", "/bin"));
  85         assert_se(PATH_IN_SET("/", "/", "/", "/foo/bar"));
  86         assert_se(!PATH_IN_SET("/", "/abc", "/def"));
  87
  88         assert_se(path_equal_ptr(NULL, NULL));
  89         assert_se(path_equal_ptr("/a", "/a"));
  90         assert_se(!path_equal_ptr("/a", "/b"));
  91         assert_se(!path_equal_ptr("/a", NULL));
  92         assert_se(!path_equal_ptr(NULL, "/a"));
  93 }
  94
  95 static void test_path_equal_root(void) {
  96         /* Nail down the details of how path_equal("/", ...) works. */
  97
  98         assert_se(path_equal("/", "/"));
  99         assert_se(path_equal("/", "//"));
 100
 101         assert_se(!path_equal("/", "/./"));
 102         assert_se(!path_equal("/", "/../"));
 103
 104         assert_se(!path_equal("/", "/.../"));
 105
 106         /* Make sure that files_same works as expected. */
 107
 108         assert_se(files_same("/", "/", 0) > 0);
 109         assert_se(files_same("/", "/", AT_SYMLINK_NOFOLLOW) > 0);
 110         assert_se(files_same("/", "//", 0) > 0);
 111         assert_se(files_same("/", "//", AT_SYMLINK_NOFOLLOW) > 0);
 112
 113         assert_se(files_same("/", "/./", 0) > 0);
 114         assert_se(files_same("/", "/./", AT_SYMLINK_NOFOLLOW) > 0);
 115         assert_se(files_same("/", "/../", 0) > 0);
 116         assert_se(files_same("/", "/../", AT_SYMLINK_NOFOLLOW) > 0);
 117
 118         assert_se(files_same("/", "/.../", 0) == -ENOENT);
 119         assert_se(files_same("/", "/.../", AT_SYMLINK_NOFOLLOW) == -ENOENT);
 120
 121         /* The same for path_equal_or_files_same. */
 122
 123         assert_se(path_equal_or_files_same("/", "/", 0));
 124         assert_se(path_equal_or_files_same("/", "/", AT_SYMLINK_NOFOLLOW));
 125         assert_se(path_equal_or_files_same("/", "//", 0));
 126         assert_se(path_equal_or_files_same("/", "//", AT_SYMLINK_NOFOLLOW));
 127
 128         assert_se(path_equal_or_files_same("/", "/./", 0));
 129         assert_se(path_equal_or_files_same("/", "/./", AT_SYMLINK_NOFOLLOW));
 130         assert_se(path_equal_or_files_same("/", "/../", 0));
 131         assert_se(path_equal_or_files_same("/", "/../", AT_SYMLINK_NOFOLLOW));
 132
 133         assert_se(!path_equal_or_files_same("/", "/.../", 0));
 134         assert_se(!path_equal_or_files_same("/", "/.../", AT_SYMLINK_NOFOLLOW));
 135 }
 136
 137 static void test_find_binary(const char *self) {
 138         char *p;
 139
 140         assert_se(find_binary("/bin/sh", &p) == 0);
 141         puts(p);
 142         assert_se(path_equal(p, "/bin/sh"));
 143         free(p);
 144
 145         assert_se(find_binary(self, &p) == 0);
 146         puts(p);
 147         /* libtool might prefix the binary name with "lt-" */
 148         assert_se(endswith(p, "/lt-test-path-util") || endswith(p, "/test-path-util"));
 149         assert_se(path_is_absolute(p));
 150         free(p);
 151
 152         assert_se(find_binary("sh", &p) == 0);
 153         puts(p);
 154         assert_se(endswith(p, "/sh"));
 155         assert_se(path_is_absolute(p));
 156         free(p);
 157
 158         assert_se(find_binary("xxxx-xxxx", &p) == -ENOENT);
 159         assert_se(find_binary("/some/dir/xxxx-xxxx", &p) == -ENOENT);
 160 }
 161
 162 static void test_prefixes(void) {
 163         static const char* values[] = { "/a/b/c/d", "/a/b/c", "/a/b", "/a", "", NULL};
 164         unsigned i;
 165         char s[PATH_MAX];
 166         bool b;
 167
 168         i = 0;
 169         PATH_FOREACH_PREFIX_MORE(s, "/a/b/c/d") {
 170                 log_error("---%s---", s);
 171                 assert_se(streq(s, values[i++]));
 172         }
 173         assert_se(values[i] == NULL);
 174
 175         i = 1;
 176         PATH_FOREACH_PREFIX(s, "/a/b/c/d") {
 177                 log_error("---%s---", s);
 178                 assert_se(streq(s, values[i++]));
 179         }
 180         assert_se(values[i] == NULL);
 181
 182         i = 0;
 183         PATH_FOREACH_PREFIX_MORE(s, "////a////b////c///d///////")
 184                 assert_se(streq(s, values[i++]));
 185         assert_se(values[i] == NULL);
 186
 187         i = 1;
 188         PATH_FOREACH_PREFIX(s, "////a////b////c///d///////")
 189                 assert_se(streq(s, values[i++]));
 190         assert_se(values[i] == NULL);
 191
 192         PATH_FOREACH_PREFIX(s, "////")
 193                 assert_not_reached("Wut?");
 194
 195         b = false;
 196         PATH_FOREACH_PREFIX_MORE(s, "////") {
 197                 assert_se(!b);
 198                 assert_se(streq(s, ""));
 199                 b = true;
 200         }
 201         assert_se(b);
 202
 203         PATH_FOREACH_PREFIX(s, "")
 204                 assert_not_reached("wut?");
 205
 206         b = false;
 207         PATH_FOREACH_PREFIX_MORE(s, "") {
 208                 assert_se(!b);
 209                 assert_se(streq(s, ""));
 210                 b = true;
 211         }
 212 }
 213
 214 static void test_path_join(void) {
 215
 216 #define test_join(root, path, rest, expected) {  \
 217                 _cleanup_free_ char *z = NULL;   \
 218                 z = path_join(root, path, rest); \
 219                 assert_se(streq(z, expected));   \
 220         }
 221
 222         test_join("/root", "/a/b", "/c", "/root/a/b/c");
 223         test_join("/root", "a/b", "c", "/root/a/b/c");
 224         test_join("/root", "/a/b", "c", "/root/a/b/c");
 225         test_join("/root", "/", "c", "/root/c");
 226         test_join("/root", "/", NULL, "/root/");
 227
 228         test_join(NULL, "/a/b", "/c", "/a/b/c");
 229         test_join(NULL, "a/b", "c", "a/b/c");
 230         test_join(NULL, "/a/b", "c", "/a/b/c");
 231         test_join(NULL, "/", "c", "/c");
 232         test_join(NULL, "/", NULL, "/");
 233 }
 234
 235 static void test_fsck_exists(void) {
 236         /* Ensure we use a sane default for PATH. */
 237         unsetenv("PATH");
 238
 239         /* fsck.minix is provided by util-linux and will probably exist. */
 240         assert_se(fsck_exists("minix") == 1);
 241
 242         assert_se(fsck_exists("AbCdE") == 0);
 243         assert_se(fsck_exists("/../bin/") == 0);
 244 }
 245
 246 static void test_make_relative(void) {
 247         char *result;
 248
 249         assert_se(path_make_relative("some/relative/path", "/some/path", &result) < 0);
 250         assert_se(path_make_relative("/some/path", "some/relative/path", &result) < 0);
 251         assert_se(path_make_relative("/some/dotdot/../path", "/some/path", &result) < 0);
 252
 253 #define test(from_dir, to_path, expected) {                \
 254                 _cleanup_free_ char *z = NULL;             \
 255                 path_make_relative(from_dir, to_path, &z); \
 256                 assert_se(streq(z, expected));             \
 257         }
 258
 259         test("/", "/", ".");
 260         test("/", "/some/path", "some/path");
 261         test("/some/path", "/some/path", ".");
 262         test("/some/path", "/some/path/in/subdir", "in/subdir");
 263         test("/some/path", "/", "../..");
 264         test("/some/path", "/some/other/path", "../other/path");
 265         test("/some/path/./dot", "/some/further/path", "../../further/path");
 266         test("//extra/////slashes///won't////fool///anybody//", "////extra///slashes////are/just///fine///", "../../../are/just/fine");
 267 }
 268
 269 static void test_strv_resolve(void) {
 270         char tmp_dir[] = "/tmp/test-path-util-XXXXXX";
 271         _cleanup_strv_free_ char **search_dirs = NULL;
 272         _cleanup_strv_free_ char **absolute_dirs = NULL;
 273         char **d;
 274
 275         assert_se(mkdtemp(tmp_dir) != NULL);
 276
 277         search_dirs = strv_new("/dir1", "/dir2", "/dir3", NULL);
 278         assert_se(search_dirs);
 279         STRV_FOREACH(d, search_dirs) {
 280                 char *p = strappend(tmp_dir, *d);
 281                 assert_se(p);
 282                 assert_se(strv_push(&absolute_dirs, p) == 0);
 283         }
 284
 285         assert_se(mkdir(absolute_dirs[0], 0700) == 0);
 286         assert_se(mkdir(absolute_dirs[1], 0700) == 0);
 287         assert_se(symlink("dir2", absolute_dirs[2]) == 0);
 288
 289         path_strv_resolve(search_dirs, tmp_dir);
 290         assert_se(streq(search_dirs[0], "/dir1"));
 291         assert_se(streq(search_dirs[1], "/dir2"));
 292         assert_se(streq(search_dirs[2], "/dir2"));
 293
 294         assert_se(rm_rf(tmp_dir, REMOVE_ROOT|REMOVE_PHYSICAL) == 0);
 295 }
 296
 297 static void test_path_startswith(void) {
 298         const char *p;
 299
 300         p = path_startswith("/foo/bar/barfoo/", "/foo");
 301         assert_se(streq_ptr(p, "bar/barfoo/"));
 302
 303         p = path_startswith("/foo/bar/barfoo/", "/foo/");
 304         assert_se(streq_ptr(p, "bar/barfoo/"));
 305
 306         p = path_startswith("/foo/bar/barfoo/", "/");
 307         assert_se(streq_ptr(p, "foo/bar/barfoo/"));
 308
 309         p = path_startswith("/foo/bar/barfoo/", "////");
 310         assert_se(streq_ptr(p, "foo/bar/barfoo/"));
 311
 312         p = path_startswith("/foo/bar/barfoo/", "/foo//bar/////barfoo///");
 313         assert_se(streq_ptr(p, ""));
 314
 315         p = path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo////");
 316         assert_se(streq_ptr(p, ""));
 317
 318         p = path_startswith("/foo/bar/barfoo/", "/foo/bar///barfoo/");
 319         assert_se(streq_ptr(p, ""));
 320
 321         p = path_startswith("/foo/bar/barfoo/", "/foo////bar/barfoo/");
 322         assert_se(streq_ptr(p, ""));
 323
 324         p = path_startswith("/foo/bar/barfoo/", "////foo/bar/barfoo/");
 325         assert_se(streq_ptr(p, ""));
 326
 327         p = path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo");
 328         assert_se(streq_ptr(p, ""));
 329
 330         assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa/"));
 331         assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa"));
 332         assert_se(!path_startswith("/foo/bar/barfoo/", ""));
 333         assert_se(!path_startswith("/foo/bar/barfoo/", "/bar/foo"));
 334         assert_se(!path_startswith("/foo/bar/barfoo/", "/f/b/b/"));
 335 }
 336
 337 static void test_prefix_root_one(const char *r, const char *p, const char *expected) {
 338         _cleanup_free_ char *s = NULL;
 339         const char *t;
 340
 341         assert_se(s = prefix_root(r, p));
 342         assert_se(streq_ptr(s, expected));
 343
 344         t = prefix_roota(r, p);
 345         assert_se(t);
 346         assert_se(streq_ptr(t, expected));
 347 }
 348
 349 static void test_prefix_root(void) {
 350         test_prefix_root_one("/", "/foo", "/foo");
 351         test_prefix_root_one(NULL, "/foo", "/foo");
 352         test_prefix_root_one("", "/foo", "/foo");
 353         test_prefix_root_one("///", "/foo", "/foo");
 354         test_prefix_root_one("/", "////foo", "/foo");
 355         test_prefix_root_one(NULL, "////foo", "/foo");
 356
 357         test_prefix_root_one("/foo", "/bar", "/foo/bar");
 358         test_prefix_root_one("/foo", "bar", "/foo/bar");
 359         test_prefix_root_one("foo", "bar", "foo/bar");
 360         test_prefix_root_one("/foo/", "/bar", "/foo/bar");
 361         test_prefix_root_one("/foo/", "//bar", "/foo/bar");
 362         test_prefix_root_one("/foo///", "//bar", "/foo/bar");
 363 }
 364
 365 static void test_file_in_same_dir(void) {
 366         char *t;
 367
 368         t = file_in_same_dir("/", "a");
 369         assert_se(streq(t, "/a"));
 370         free(t);
 371
 372         t = file_in_same_dir("/", "/a");
 373         assert_se(streq(t, "/a"));
 374         free(t);
 375
 376         t = file_in_same_dir("", "a");
 377         assert_se(streq(t, "a"));
 378         free(t);
 379
 380         t = file_in_same_dir("a/", "a");
 381         assert_se(streq(t, "a/a"));
 382         free(t);
 383
 384         t = file_in_same_dir("bar/foo", "bar");
 385         assert_se(streq(t, "bar/bar"));
 386         free(t);
 387 }
 388
 389 static void test_last_path_component(void) {
 390         assert_se(streq(last_path_component("a/b/c"), "c"));
 391         assert_se(streq(last_path_component("a/b/c/"), "c/"));
 392         assert_se(streq(last_path_component("/"), "/"));
 393         assert_se(streq(last_path_component("//"), "/"));
 394         assert_se(streq(last_path_component("///"), "/"));
 395         assert_se(streq(last_path_component("."), "."));
 396         assert_se(streq(last_path_component("./."), "."));
 397         assert_se(streq(last_path_component("././"), "./"));
 398         assert_se(streq(last_path_component("././/"), ".//"));
 399         assert_se(streq(last_path_component("/foo/a"), "a"));
 400         assert_se(streq(last_path_component("/foo/a/"), "a/"));
 401         assert_se(streq(last_path_component(""), ""));
 402         assert_se(streq(last_path_component("a"), "a"));
 403         assert_se(streq(last_path_component("a/"), "a/"));
 404         assert_se(streq(last_path_component("/a"), "a"));
 405         assert_se(streq(last_path_component("/a/"), "a/"));
 406 }
 407
 408 static void test_filename_is_valid(void) {
 409         char foo[FILENAME_MAX+2];
 410         int i;
 411
 412         assert_se(!filename_is_valid(""));
 413         assert_se(!filename_is_valid("/bar/foo"));
 414         assert_se(!filename_is_valid("/"));
 415         assert_se(!filename_is_valid("."));
 416         assert_se(!filename_is_valid(".."));
 417
 418         for (i=0; i<FILENAME_MAX+1; i++)
 419                 foo[i] = 'a';
 420         foo[FILENAME_MAX+1] = '\0';
 421
 422         assert_se(!filename_is_valid(foo));
 423
 424         assert_se(filename_is_valid("foo_bar-333"));
 425         assert_se(filename_is_valid("o.o"));
 426 }
 427
 428 static void test_hidden_or_backup_file(void) {
 429         assert_se(hidden_or_backup_file(".hidden"));
 430         assert_se(hidden_or_backup_file("..hidden"));
 431         assert_se(!hidden_or_backup_file("hidden."));
 432
 433         assert_se(hidden_or_backup_file("backup~"));
 434         assert_se(hidden_or_backup_file(".backup~"));
 435
 436         assert_se(hidden_or_backup_file("lost+found"));
 437         assert_se(hidden_or_backup_file("aquota.user"));
 438         assert_se(hidden_or_backup_file("aquota.group"));
 439
 440         assert_se(hidden_or_backup_file("test.rpmnew"));
 441         assert_se(hidden_or_backup_file("test.dpkg-old"));
 442         assert_se(hidden_or_backup_file("test.dpkg-remove"));
 443         assert_se(hidden_or_backup_file("test.swp"));
 444
 445         assert_se(!hidden_or_backup_file("test.rpmnew."));
 446         assert_se(!hidden_or_backup_file("test.dpkg-old.foo"));
 447 }
 448
 449 static void test_systemd_installation_has_version(const char *path) {
 450         int r;
 451         const unsigned versions[] = {0, 231, atoi(PACKAGE_VERSION), 999};
 452         unsigned i;
 453
 454         for (i = 0; i < ELEMENTSOF(versions); i++) {
 455                 r = systemd_installation_has_version(path, versions[i]);
 456                 assert_se(r >= 0);
 457                 log_info("%s has systemd >= %u: %s",
 458                          path ?: "Current installation", versions[i], yes_no(r));
 459         }
 460 }
 461
 462 static void test_skip_dev_prefix(void) {
 463
 464         assert_se(streq(skip_dev_prefix("/"), "/"));
 465         assert_se(streq(skip_dev_prefix("/dev"), ""));
 466         assert_se(streq(skip_dev_prefix("/dev/"), ""));
 467         assert_se(streq(skip_dev_prefix("/dev/foo"), "foo"));
 468         assert_se(streq(skip_dev_prefix("/dev/foo/bar"), "foo/bar"));
 469         assert_se(streq(skip_dev_prefix("//dev"), ""));
 470         assert_se(streq(skip_dev_prefix("//dev//"), ""));
 471         assert_se(streq(skip_dev_prefix("/dev///foo"), "foo"));
 472         assert_se(streq(skip_dev_prefix("///dev///foo///bar"), "foo///bar"));
 473         assert_se(streq(skip_dev_prefix("//foo"), "//foo"));
 474         assert_se(streq(skip_dev_prefix("foo"), "foo"));
 475 }
 476
 477 int main(int argc, char **argv) {
 478         log_set_max_level(LOG_DEBUG);
 479         log_parse_environment();
 480         log_open();
 481
 482         test_path();
 483         test_path_equal_root();
 484         test_find_binary(argv[0]);
 485         test_prefixes();
 486         test_path_join();
 487         test_fsck_exists();
 488         test_make_relative();
 489         test_strv_resolve();
 490         test_path_startswith();
 491         test_prefix_root();
 492         test_file_in_same_dir();
 493         test_last_path_component();
 494         test_filename_is_valid();
 495         test_hidden_or_backup_file();
 496         test_skip_dev_prefix();
 497
 498         test_systemd_installation_has_version(argv[1]); /* NULL is OK */
 499
 500         return 0;
 501 }