src/test/test-path-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <stdio.h>
   4 #include <unistd.h>
   5
   6 #include "alloc-util.h"
   7 #include "fd-util.h"
   8 #include "macro.h"
   9 #include "mount-util.h"
  10 #include "path-util.h"
  11 #include "rm-rf.h"
  12 #include "stat-util.h"
  13 #include "string-util.h"
  14 #include "strv.h"
  15 #include "tests.h"
  16 #include "util.h"
  17
  18 #define test_path_compare(a, b, result) {                 \
  19                 assert_se(path_compare(a, b) == result);  \
  20                 assert_se(path_compare(b, a) == -result); \
  21                 assert_se(path_equal(a, b) == !result);   \
  22                 assert_se(path_equal(b, a) == !result);   \
  23         }
  24
  25 static void test_path_simplify(const char *in, const char *out, const char *out_dot) {
  26         char *p;
  27
  28         p = strdupa(in);
  29         assert_se(streq(path_simplify(p, false), out));
  30
  31         p = strdupa(in);
  32         assert_se(streq(path_simplify(p, true), out_dot));
  33 }
  34
  35 static void test_path(void) {
  36         _cleanup_close_ int fd = -1;
  37
  38         test_path_compare("/goo", "/goo", 0);
  39         test_path_compare("/goo", "/goo", 0);
  40         test_path_compare("//goo", "/goo", 0);
  41         test_path_compare("//goo/////", "/goo", 0);
  42         test_path_compare("goo/////", "goo", 0);
  43
  44         test_path_compare("/goo/boo", "/goo//boo", 0);
  45         test_path_compare("//goo/boo", "/goo/boo//", 0);
  46
  47         test_path_compare("/", "///", 0);
  48
  49         test_path_compare("/x", "x/", 1);
  50         test_path_compare("x/", "/", -1);
  51
  52         test_path_compare("/x/./y", "x/y", 1);
  53         test_path_compare("x/.y", "x/y", -1);
  54
  55         test_path_compare("foo", "/foo", -1);
  56         test_path_compare("/foo", "/foo/bar", -1);
  57         test_path_compare("/foo/aaa", "/foo/b", -1);
  58         test_path_compare("/foo/aaa", "/foo/b/a", -1);
  59         test_path_compare("/foo/a", "/foo/aaa", -1);
  60         test_path_compare("/foo/a/b", "/foo/aaa", -1);
  61
  62         assert_se(path_is_absolute("/"));
  63         assert_se(!path_is_absolute("./"));
  64
  65         assert_se(is_path("/dir"));
  66         assert_se(is_path("a/b"));
  67         assert_se(!is_path("."));
  68
  69         assert_se(streq(basename("./aa/bb/../file.da."), "file.da."));
  70         assert_se(streq(basename("/aa///.file"), ".file"));
  71         assert_se(streq(basename("/aa///file..."), "file..."));
  72         assert_se(streq(basename("file.../"), ""));
  73
  74         fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY|O_NOCTTY);
  75         assert_se(fd >= 0);
  76         assert_se(fd_is_mount_point(fd, "/", 0) > 0);
  77
  78         test_path_simplify("aaa/bbb////ccc", "aaa/bbb/ccc", "aaa/bbb/ccc");
  79         test_path_simplify("//aaa/.////ccc", "/aaa/./ccc", "/aaa/ccc");
  80         test_path_simplify("///", "/", "/");
  81         test_path_simplify("///.//", "/.", "/");
  82         test_path_simplify("///.//.///", "/./.", "/");
  83         test_path_simplify("////.././///../.", "/.././../.", "/../..");
  84         test_path_simplify(".", ".", ".");
  85         test_path_simplify("./", ".", ".");
  86         test_path_simplify(".///.//./.", "./././.", ".");
  87         test_path_simplify(".///.//././/", "./././.", ".");
  88         test_path_simplify("//./aaa///.//./.bbb/..///c.//d.dd///..eeee/.",
  89                            "/./aaa/././.bbb/../c./d.dd/..eeee/.",
  90                            "/aaa/.bbb/../c./d.dd/..eeee");
  91         test_path_simplify("//./aaa///.//./.bbb/..///c.//d.dd///..eeee/..",
  92                            "/./aaa/././.bbb/../c./d.dd/..eeee/..",
  93                            "/aaa/.bbb/../c./d.dd/..eeee/..");
  94         test_path_simplify(".//./aaa///.//./.bbb/..///c.//d.dd///..eeee/..",
  95                            "././aaa/././.bbb/../c./d.dd/..eeee/..",
  96                            "aaa/.bbb/../c./d.dd/..eeee/..");
  97         test_path_simplify("..//./aaa///.//./.bbb/..///c.//d.dd///..eeee/..",
  98                            ".././aaa/././.bbb/../c./d.dd/..eeee/..",
  99                            "../aaa/.bbb/../c./d.dd/..eeee/..");
 100
 101         assert_se(PATH_IN_SET("/bin", "/", "/bin", "/foo"));
 102         assert_se(PATH_IN_SET("/bin", "/bin"));
 103         assert_se(PATH_IN_SET("/bin", "/foo/bar", "/bin"));
 104         assert_se(PATH_IN_SET("/", "/", "/", "/foo/bar"));
 105         assert_se(!PATH_IN_SET("/", "/abc", "/def"));
 106
 107         assert_se(path_equal_ptr(NULL, NULL));
 108         assert_se(path_equal_ptr("/a", "/a"));
 109         assert_se(!path_equal_ptr("/a", "/b"));
 110         assert_se(!path_equal_ptr("/a", NULL));
 111         assert_se(!path_equal_ptr(NULL, "/a"));
 112 }
 113
 114 static void test_path_equal_root(void) {
 115         /* Nail down the details of how path_equal("/", ...) works. */
 116
 117         assert_se(path_equal("/", "/"));
 118         assert_se(path_equal("/", "//"));
 119
 120         assert_se(!path_equal("/", "/./"));
 121         assert_se(!path_equal("/", "/../"));
 122
 123         assert_se(!path_equal("/", "/.../"));
 124
 125         /* Make sure that files_same works as expected. */
 126
 127         assert_se(files_same("/", "/", 0) > 0);
 128         assert_se(files_same("/", "/", AT_SYMLINK_NOFOLLOW) > 0);
 129         assert_se(files_same("/", "//", 0) > 0);
 130         assert_se(files_same("/", "//", AT_SYMLINK_NOFOLLOW) > 0);
 131
 132         assert_se(files_same("/", "/./", 0) > 0);
 133         assert_se(files_same("/", "/./", AT_SYMLINK_NOFOLLOW) > 0);
 134         assert_se(files_same("/", "/../", 0) > 0);
 135         assert_se(files_same("/", "/../", AT_SYMLINK_NOFOLLOW) > 0);
 136
 137         assert_se(files_same("/", "/.../", 0) == -ENOENT);
 138         assert_se(files_same("/", "/.../", AT_SYMLINK_NOFOLLOW) == -ENOENT);
 139
 140         /* The same for path_equal_or_files_same. */
 141
 142         assert_se(path_equal_or_files_same("/", "/", 0));
 143         assert_se(path_equal_or_files_same("/", "/", AT_SYMLINK_NOFOLLOW));
 144         assert_se(path_equal_or_files_same("/", "//", 0));
 145         assert_se(path_equal_or_files_same("/", "//", AT_SYMLINK_NOFOLLOW));
 146
 147         assert_se(path_equal_or_files_same("/", "/./", 0));
 148         assert_se(path_equal_or_files_same("/", "/./", AT_SYMLINK_NOFOLLOW));
 149         assert_se(path_equal_or_files_same("/", "/../", 0));
 150         assert_se(path_equal_or_files_same("/", "/../", AT_SYMLINK_NOFOLLOW));
 151
 152         assert_se(!path_equal_or_files_same("/", "/.../", 0));
 153         assert_se(!path_equal_or_files_same("/", "/.../", AT_SYMLINK_NOFOLLOW));
 154 }
 155
 156 static void test_find_binary(const char *self) {
 157         char *p;
 158
 159         assert_se(find_binary("/bin/sh", &p) == 0);
 160         puts(p);
 161         assert_se(path_equal(p, "/bin/sh"));
 162         free(p);
 163
 164         assert_se(find_binary(self, &p) == 0);
 165         puts(p);
 166         /* libtool might prefix the binary name with "lt-" */
 167         assert_se(endswith(p, "/lt-test-path-util") || endswith(p, "/test-path-util"));
 168         assert_se(path_is_absolute(p));
 169         free(p);
 170
 171         assert_se(find_binary("sh", &p) == 0);
 172         puts(p);
 173         assert_se(endswith(p, "/sh"));
 174         assert_se(path_is_absolute(p));
 175         free(p);
 176
 177         assert_se(find_binary("xxxx-xxxx", &p) == -ENOENT);
 178         assert_se(find_binary("/some/dir/xxxx-xxxx", &p) == -ENOENT);
 179 }
 180
 181 static void test_prefixes(void) {
 182         static const char* values[] = { "/a/b/c/d", "/a/b/c", "/a/b", "/a", "", NULL};
 183         unsigned i;
 184         char s[PATH_MAX];
 185         bool b;
 186
 187         i = 0;
 188         PATH_FOREACH_PREFIX_MORE(s, "/a/b/c/d") {
 189                 log_error("---%s---", s);
 190                 assert_se(streq(s, values[i++]));
 191         }
 192         assert_se(values[i] == NULL);
 193
 194         i = 1;
 195         PATH_FOREACH_PREFIX(s, "/a/b/c/d") {
 196                 log_error("---%s---", s);
 197                 assert_se(streq(s, values[i++]));
 198         }
 199         assert_se(values[i] == NULL);
 200
 201         i = 0;
 202         PATH_FOREACH_PREFIX_MORE(s, "////a////b////c///d///////")
 203                 assert_se(streq(s, values[i++]));
 204         assert_se(values[i] == NULL);
 205
 206         i = 1;
 207         PATH_FOREACH_PREFIX(s, "////a////b////c///d///////")
 208                 assert_se(streq(s, values[i++]));
 209         assert_se(values[i] == NULL);
 210
 211         PATH_FOREACH_PREFIX(s, "////")
 212                 assert_not_reached("Wut?");
 213
 214         b = false;
 215         PATH_FOREACH_PREFIX_MORE(s, "////") {
 216                 assert_se(!b);
 217                 assert_se(streq(s, ""));
 218                 b = true;
 219         }
 220         assert_se(b);
 221
 222         PATH_FOREACH_PREFIX(s, "")
 223                 assert_not_reached("wut?");
 224
 225         b = false;
 226         PATH_FOREACH_PREFIX_MORE(s, "") {
 227                 assert_se(!b);
 228                 assert_se(streq(s, ""));
 229                 b = true;
 230         }
 231 }
 232
 233 static void test_path_join(void) {
 234
 235 #define test_join(root, path, rest, expected) {  \
 236                 _cleanup_free_ char *z = NULL;   \
 237                 z = path_join(root, path, rest); \
 238                 assert_se(streq(z, expected));   \
 239         }
 240
 241         test_join("/root", "/a/b", "/c", "/root/a/b/c");
 242         test_join("/root", "a/b", "c", "/root/a/b/c");
 243         test_join("/root", "/a/b", "c", "/root/a/b/c");
 244         test_join("/root", "/", "c", "/root/c");
 245         test_join("/root", "/", NULL, "/root/");
 246
 247         test_join(NULL, "/a/b", "/c", "/a/b/c");
 248         test_join(NULL, "a/b", "c", "a/b/c");
 249         test_join(NULL, "/a/b", "c", "/a/b/c");
 250         test_join(NULL, "/", "c", "/c");
 251         test_join(NULL, "/", NULL, "/");
 252 }
 253
 254 static void test_fsck_exists(void) {
 255         /* Ensure we use a sane default for PATH. */
 256         unsetenv("PATH");
 257
 258         /* fsck.minix is provided by util-linux and will probably exist. */
 259         assert_se(fsck_exists("minix") == 1);
 260
 261         assert_se(fsck_exists("AbCdE") == 0);
 262         assert_se(fsck_exists("/../bin/") == 0);
 263 }
 264
 265 static void test_make_relative(void) {
 266         char *result;
 267
 268         assert_se(path_make_relative("some/relative/path", "/some/path", &result) < 0);
 269         assert_se(path_make_relative("/some/path", "some/relative/path", &result) < 0);
 270         assert_se(path_make_relative("/some/dotdot/../path", "/some/path", &result) < 0);
 271
 272 #define test(from_dir, to_path, expected) {                \
 273                 _cleanup_free_ char *z = NULL;             \
 274                 path_make_relative(from_dir, to_path, &z); \
 275                 assert_se(streq(z, expected));             \
 276         }
 277
 278         test("/", "/", ".");
 279         test("/", "/some/path", "some/path");
 280         test("/some/path", "/some/path", ".");
 281         test("/some/path", "/some/path/in/subdir", "in/subdir");
 282         test("/some/path", "/", "../..");
 283         test("/some/path", "/some/other/path", "../other/path");
 284         test("/some/path/./dot", "/some/further/path", "../../further/path");
 285         test("//extra.//.//./.slashes//./won't////fo.ol///anybody//", "/././/extra././/.slashes////ar.e/.just/././.fine///", "../../../ar.e/.just/.fine");
 286 }
 287
 288 static void test_strv_resolve(void) {
 289         char tmp_dir[] = "/tmp/test-path-util-XXXXXX";
 290         _cleanup_strv_free_ char **search_dirs = NULL;
 291         _cleanup_strv_free_ char **absolute_dirs = NULL;
 292         char **d;
 293
 294         assert_se(mkdtemp(tmp_dir) != NULL);
 295
 296         search_dirs = strv_new("/dir1", "/dir2", "/dir3");
 297         assert_se(search_dirs);
 298         STRV_FOREACH(d, search_dirs) {
 299                 char *p = strappend(tmp_dir, *d);
 300                 assert_se(p);
 301                 assert_se(strv_push(&absolute_dirs, p) == 0);
 302         }
 303
 304         assert_se(mkdir(absolute_dirs[0], 0700) == 0);
 305         assert_se(mkdir(absolute_dirs[1], 0700) == 0);
 306         assert_se(symlink("dir2", absolute_dirs[2]) == 0);
 307
 308         path_strv_resolve(search_dirs, tmp_dir);
 309         assert_se(streq(search_dirs[0], "/dir1"));
 310         assert_se(streq(search_dirs[1], "/dir2"));
 311         assert_se(streq(search_dirs[2], "/dir2"));
 312
 313         assert_se(rm_rf(tmp_dir, REMOVE_ROOT|REMOVE_PHYSICAL) == 0);
 314 }
 315
 316 static void test_path_startswith(void) {
 317         const char *p;
 318
 319         p = path_startswith("/foo/bar/barfoo/", "/foo");
 320         assert_se(streq_ptr(p, "bar/barfoo/"));
 321
 322         p = path_startswith("/foo/bar/barfoo/", "/foo/");
 323         assert_se(streq_ptr(p, "bar/barfoo/"));
 324
 325         p = path_startswith("/foo/bar/barfoo/", "/");
 326         assert_se(streq_ptr(p, "foo/bar/barfoo/"));
 327
 328         p = path_startswith("/foo/bar/barfoo/", "////");
 329         assert_se(streq_ptr(p, "foo/bar/barfoo/"));
 330
 331         p = path_startswith("/foo/bar/barfoo/", "/foo//bar/////barfoo///");
 332         assert_se(streq_ptr(p, ""));
 333
 334         p = path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo////");
 335         assert_se(streq_ptr(p, ""));
 336
 337         p = path_startswith("/foo/bar/barfoo/", "/foo/bar///barfoo/");
 338         assert_se(streq_ptr(p, ""));
 339
 340         p = path_startswith("/foo/bar/barfoo/", "/foo////bar/barfoo/");
 341         assert_se(streq_ptr(p, ""));
 342
 343         p = path_startswith("/foo/bar/barfoo/", "////foo/bar/barfoo/");
 344         assert_se(streq_ptr(p, ""));
 345
 346         p = path_startswith("/foo/bar/barfoo/", "/foo/bar/barfoo");
 347         assert_se(streq_ptr(p, ""));
 348
 349         assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa/"));
 350         assert_se(!path_startswith("/foo/bar/barfoo/", "/foo/bar/barfooa"));
 351         assert_se(!path_startswith("/foo/bar/barfoo/", ""));
 352         assert_se(!path_startswith("/foo/bar/barfoo/", "/bar/foo"));
 353         assert_se(!path_startswith("/foo/bar/barfoo/", "/f/b/b/"));
 354 }
 355
 356 static void test_prefix_root_one(const char *r, const char *p, const char *expected) {
 357         _cleanup_free_ char *s = NULL;
 358         const char *t;
 359
 360         assert_se(s = prefix_root(r, p));
 361         assert_se(streq_ptr(s, expected));
 362
 363         t = prefix_roota(r, p);
 364         assert_se(t);
 365         assert_se(streq_ptr(t, expected));
 366 }
 367
 368 static void test_prefix_root(void) {
 369         test_prefix_root_one("/", "/foo", "/foo");
 370         test_prefix_root_one(NULL, "/foo", "/foo");
 371         test_prefix_root_one("", "/foo", "/foo");
 372         test_prefix_root_one("///", "/foo", "/foo");
 373         test_prefix_root_one("/", "////foo", "/foo");
 374         test_prefix_root_one(NULL, "////foo", "/foo");
 375
 376         test_prefix_root_one("/foo", "/bar", "/foo/bar");
 377         test_prefix_root_one("/foo", "bar", "/foo/bar");
 378         test_prefix_root_one("foo", "bar", "foo/bar");
 379         test_prefix_root_one("/foo/", "/bar", "/foo/bar");
 380         test_prefix_root_one("/foo/", "//bar", "/foo/bar");
 381         test_prefix_root_one("/foo///", "//bar", "/foo/bar");
 382 }
 383
 384 static void test_file_in_same_dir(void) {
 385         char *t;
 386
 387         t = file_in_same_dir("/", "a");
 388         assert_se(streq(t, "/a"));
 389         free(t);
 390
 391         t = file_in_same_dir("/", "/a");
 392         assert_se(streq(t, "/a"));
 393         free(t);
 394
 395         t = file_in_same_dir("", "a");
 396         assert_se(streq(t, "a"));
 397         free(t);
 398
 399         t = file_in_same_dir("a/", "a");
 400         assert_se(streq(t, "a/a"));
 401         free(t);
 402
 403         t = file_in_same_dir("bar/foo", "bar");
 404         assert_se(streq(t, "bar/bar"));
 405         free(t);
 406 }
 407
 408 static void test_last_path_component(void) {
 409         assert_se(streq(last_path_component("a/b/c"), "c"));
 410         assert_se(streq(last_path_component("a/b/c/"), "c/"));
 411         assert_se(streq(last_path_component("/"), "/"));
 412         assert_se(streq(last_path_component("//"), "/"));
 413         assert_se(streq(last_path_component("///"), "/"));
 414         assert_se(streq(last_path_component("."), "."));
 415         assert_se(streq(last_path_component("./."), "."));
 416         assert_se(streq(last_path_component("././"), "./"));
 417         assert_se(streq(last_path_component("././/"), ".//"));
 418         assert_se(streq(last_path_component("/foo/a"), "a"));
 419         assert_se(streq(last_path_component("/foo/a/"), "a/"));
 420         assert_se(streq(last_path_component(""), ""));
 421         assert_se(streq(last_path_component("a"), "a"));
 422         assert_se(streq(last_path_component("a/"), "a/"));
 423         assert_se(streq(last_path_component("/a"), "a"));
 424         assert_se(streq(last_path_component("/a/"), "a/"));
 425 }
 426
 427 static void test_filename_is_valid(void) {
 428         char foo[FILENAME_MAX+2];
 429         int i;
 430
 431         assert_se(!filename_is_valid(""));
 432         assert_se(!filename_is_valid("/bar/foo"));
 433         assert_se(!filename_is_valid("/"));
 434         assert_se(!filename_is_valid("."));
 435         assert_se(!filename_is_valid(".."));
 436
 437         for (i=0; i<FILENAME_MAX+1; i++)
 438                 foo[i] = 'a';
 439         foo[FILENAME_MAX+1] = '\0';
 440
 441         assert_se(!filename_is_valid(foo));
 442
 443         assert_se(filename_is_valid("foo_bar-333"));
 444         assert_se(filename_is_valid("o.o"));
 445 }
 446
 447 static void test_hidden_or_backup_file(void) {
 448         assert_se(hidden_or_backup_file(".hidden"));
 449         assert_se(hidden_or_backup_file("..hidden"));
 450         assert_se(!hidden_or_backup_file("hidden."));
 451
 452         assert_se(hidden_or_backup_file("backup~"));
 453         assert_se(hidden_or_backup_file(".backup~"));
 454
 455         assert_se(hidden_or_backup_file("lost+found"));
 456         assert_se(hidden_or_backup_file("aquota.user"));
 457         assert_se(hidden_or_backup_file("aquota.group"));
 458
 459         assert_se(hidden_or_backup_file("test.rpmnew"));
 460         assert_se(hidden_or_backup_file("test.dpkg-old"));
 461         assert_se(hidden_or_backup_file("test.dpkg-remove"));
 462         assert_se(hidden_or_backup_file("test.swp"));
 463
 464         assert_se(!hidden_or_backup_file("test.rpmnew."));
 465         assert_se(!hidden_or_backup_file("test.dpkg-old.foo"));
 466 }
 467
 468 static void test_systemd_installation_has_version(const char *path) {
 469         int r;
 470         const unsigned versions[] = {0, 231, atoi(PACKAGE_VERSION), 999};
 471         unsigned i;
 472
 473         for (i = 0; i < ELEMENTSOF(versions); i++) {
 474                 r = systemd_installation_has_version(path, versions[i]);
 475                 assert_se(r >= 0);
 476                 log_info("%s has systemd >= %u: %s",
 477                          path ?: "Current installation", versions[i], yes_no(r));
 478         }
 479 }
 480
 481 static void test_skip_dev_prefix(void) {
 482
 483         assert_se(streq(skip_dev_prefix("/"), "/"));
 484         assert_se(streq(skip_dev_prefix("/dev"), ""));
 485         assert_se(streq(skip_dev_prefix("/dev/"), ""));
 486         assert_se(streq(skip_dev_prefix("/dev/foo"), "foo"));
 487         assert_se(streq(skip_dev_prefix("/dev/foo/bar"), "foo/bar"));
 488         assert_se(streq(skip_dev_prefix("//dev"), ""));
 489         assert_se(streq(skip_dev_prefix("//dev//"), ""));
 490         assert_se(streq(skip_dev_prefix("/dev///foo"), "foo"));
 491         assert_se(streq(skip_dev_prefix("///dev///foo///bar"), "foo///bar"));
 492         assert_se(streq(skip_dev_prefix("//foo"), "//foo"));
 493         assert_se(streq(skip_dev_prefix("foo"), "foo"));
 494 }
 495
 496 static void test_empty_or_root(void) {
 497         assert_se(empty_or_root(NULL));
 498         assert_se(empty_or_root(""));
 499         assert_se(empty_or_root("/"));
 500         assert_se(empty_or_root("//"));
 501         assert_se(empty_or_root("///"));
 502         assert_se(empty_or_root("/////////////////"));
 503         assert_se(!empty_or_root("xxx"));
 504         assert_se(!empty_or_root("/xxx"));
 505         assert_se(!empty_or_root("/xxx/"));
 506         assert_se(!empty_or_root("//yy//"));
 507 }
 508
 509 int main(int argc, char **argv) {
 510         test_setup_logging(LOG_DEBUG);
 511
 512         test_path();
 513         test_path_equal_root();
 514         test_find_binary(argv[0]);
 515         test_prefixes();
 516         test_path_join();
 517         test_fsck_exists();
 518         test_make_relative();
 519         test_strv_resolve();
 520         test_path_startswith();
 521         test_prefix_root();
 522         test_file_in_same_dir();
 523         test_last_path_component();
 524         test_filename_is_valid();
 525         test_hidden_or_backup_file();
 526         test_skip_dev_prefix();
 527         test_empty_or_root();
 528
 529         test_systemd_installation_has_version(argv[1]); /* NULL is OK */
 530
 531         return 0;
 532 }