src/test/test-fileio.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2013 Lennart Poettering
   6 ***/
   7
   8 #include <fcntl.h>
   9 #include <stdio.h>
  10 #include <unistd.h>
  11
  12 #include "alloc-util.h"
  13 #include "ctype.h"
  14 #include "def.h"
  15 #include "env-util.h"
  16 #include "fd-util.h"
  17 #include "fileio.h"
  18 #include "io-util.h"
  19 #include "parse-util.h"
  20 #include "process-util.h"
  21 #include "string-util.h"
  22 #include "strv.h"
  23 #include "util.h"
  24
  25 static void test_parse_env_file(void) {
  26         char    t[] = "/tmp/test-fileio-in-XXXXXX",
  27                 p[] = "/tmp/test-fileio-out-XXXXXX";
  28         int fd, r;
  29         FILE *f;
  30         _cleanup_free_ char *one = NULL, *two = NULL, *three = NULL, *four = NULL, *five = NULL,
  31                         *six = NULL, *seven = NULL, *eight = NULL, *nine = NULL, *ten = NULL;
  32         _cleanup_strv_free_ char **a = NULL, **b = NULL;
  33         char **i;
  34         unsigned k;
  35
  36         fd = mkostemp_safe(p);
  37         assert_se(fd >= 0);
  38         close(fd);
  39
  40         fd = mkostemp_safe(t);
  41         assert_se(fd >= 0);
  42
  43         f = fdopen(fd, "w");
  44         assert_se(f);
  45
  46         fputs("one=BAR   \n"
  47               "# comment\n"
  48               " # comment \n"
  49               " ; comment \n"
  50               "  two   =   bar    \n"
  51               "invalid line\n"
  52               "invalid line #comment\n"
  53               "three = \"333\n"
  54               "xxxx\"\n"
  55               "four = \'44\\\"44\'\n"
  56               "five = \'55\\\'55\' \"FIVE\" cinco   \n"
  57               "six = seis sechs\\\n"
  58               " sis\n"
  59               "seven=\"sevenval\" #nocomment\n"
  60               "eight=eightval #nocomment\n"
  61               "export nine=nineval\n"
  62               "ten=ignored\n"
  63               "ten=ignored\n"
  64               "ten=", f);
  65
  66         fflush(f);
  67         fclose(f);
  68
  69         r = load_env_file(NULL, t, NULL, &a);
  70         assert_se(r >= 0);
  71
  72         STRV_FOREACH(i, a)
  73                 log_info("Got: <%s>", *i);
  74
  75         assert_se(streq_ptr(a[0], "one=BAR"));
  76         assert_se(streq_ptr(a[1], "two=bar"));
  77         assert_se(streq_ptr(a[2], "three=333\nxxxx"));
  78         assert_se(streq_ptr(a[3], "four=44\"44"));
  79         assert_se(streq_ptr(a[4], "five=55\'55FIVEcinco"));
  80         assert_se(streq_ptr(a[5], "six=seis sechs sis"));
  81         assert_se(streq_ptr(a[6], "seven=sevenval#nocomment"));
  82         assert_se(streq_ptr(a[7], "eight=eightval #nocomment"));
  83         assert_se(streq_ptr(a[8], "export nine=nineval"));
  84         assert_se(streq_ptr(a[9], "ten="));
  85         assert_se(a[10] == NULL);
  86
  87         strv_env_clean(a);
  88
  89         k = 0;
  90         STRV_FOREACH(i, b) {
  91                 log_info("Got2: <%s>", *i);
  92                 assert_se(streq(*i, a[k++]));
  93         }
  94
  95         r = parse_env_file(
  96                         t, NULL,
  97                        "one", &one,
  98                        "two", &two,
  99                        "three", &three,
 100                        "four", &four,
 101                        "five", &five,
 102                        "six", &six,
 103                        "seven", &seven,
 104                        "eight", &eight,
 105                        "export nine", &nine,
 106                        "ten", &ten,
 107                        NULL);
 108
 109         assert_se(r >= 0);
 110
 111         log_info("one=[%s]", strna(one));
 112         log_info("two=[%s]", strna(two));
 113         log_info("three=[%s]", strna(three));
 114         log_info("four=[%s]", strna(four));
 115         log_info("five=[%s]", strna(five));
 116         log_info("six=[%s]", strna(six));
 117         log_info("seven=[%s]", strna(seven));
 118         log_info("eight=[%s]", strna(eight));
 119         log_info("export nine=[%s]", strna(nine));
 120         log_info("ten=[%s]", strna(nine));
 121
 122         assert_se(streq(one, "BAR"));
 123         assert_se(streq(two, "bar"));
 124         assert_se(streq(three, "333\nxxxx"));
 125         assert_se(streq(four, "44\"44"));
 126         assert_se(streq(five, "55\'55FIVEcinco"));
 127         assert_se(streq(six, "seis sechs sis"));
 128         assert_se(streq(seven, "sevenval#nocomment"));
 129         assert_se(streq(eight, "eightval #nocomment"));
 130         assert_se(streq(nine, "nineval"));
 131         assert_se(ten == NULL);
 132
 133         r = write_env_file(p, a);
 134         assert_se(r >= 0);
 135
 136         r = load_env_file(NULL, p, NULL, &b);
 137         assert_se(r >= 0);
 138
 139         unlink(t);
 140         unlink(p);
 141 }
 142
 143 static void test_parse_multiline_env_file(void) {
 144         char    t[] = "/tmp/test-fileio-in-XXXXXX",
 145                 p[] = "/tmp/test-fileio-out-XXXXXX";
 146         int fd, r;
 147         FILE *f;
 148         _cleanup_strv_free_ char **a = NULL, **b = NULL;
 149         char **i;
 150
 151         fd = mkostemp_safe(p);
 152         assert_se(fd >= 0);
 153         close(fd);
 154
 155         fd = mkostemp_safe(t);
 156         assert_se(fd >= 0);
 157
 158         f = fdopen(fd, "w");
 159         assert_se(f);
 160
 161         fputs("one=BAR\\\n"
 162               "    VAR\\\n"
 163               "\tGAR\n"
 164               "#comment\n"
 165               "two=\"bar\\\n"
 166               "    var\\\n"
 167               "\tgar\"\n"
 168               "#comment\n"
 169               "tri=\"bar \\\n"
 170               "    var \\\n"
 171               "\tgar \"\n", f);
 172
 173         fflush(f);
 174         fclose(f);
 175
 176         r = load_env_file(NULL, t, NULL, &a);
 177         assert_se(r >= 0);
 178
 179         STRV_FOREACH(i, a)
 180                 log_info("Got: <%s>", *i);
 181
 182         assert_se(streq_ptr(a[0], "one=BAR    VAR\tGAR"));
 183         assert_se(streq_ptr(a[1], "two=bar    var\tgar"));
 184         assert_se(streq_ptr(a[2], "tri=bar     var \tgar "));
 185         assert_se(a[3] == NULL);
 186
 187         r = write_env_file(p, a);
 188         assert_se(r >= 0);
 189
 190         r = load_env_file(NULL, p, NULL, &b);
 191         assert_se(r >= 0);
 192
 193         unlink(t);
 194         unlink(p);
 195 }
 196
 197 static void test_merge_env_file(void) {
 198         char t[] = "/tmp/test-fileio-XXXXXX";
 199         int fd, r;
 200         _cleanup_fclose_ FILE *f = NULL;
 201         _cleanup_strv_free_ char **a = NULL;
 202         char **i;
 203
 204         fd = mkostemp_safe(t);
 205         assert_se(fd >= 0);
 206
 207         log_info("/* %s (%s) */", __func__, t);
 208
 209         f = fdopen(fd, "w");
 210         assert_se(f);
 211
 212         r = write_string_stream(f,
 213                                 "one=1   \n"
 214                                 "twelve=${one}2\n"
 215                                 "twentyone=2${one}\n"
 216                                 "one=2\n"
 217                                 "twentytwo=2${one}\n"
 218                                 "xxx_minus_three=$xxx - 3\n"
 219                                 "xxx=0x$one$one$one\n"
 220                                 "yyy=${one:-fallback}\n"
 221                                 "zzz=${one:+replacement}\n"
 222                                 "zzzz=${foobar:-${nothing}}\n"
 223                                 "zzzzz=${nothing:+${nothing}}\n"
 224                                 , WRITE_STRING_FILE_AVOID_NEWLINE);
 225         assert(r >= 0);
 226
 227         r = merge_env_file(&a, NULL, t);
 228         assert_se(r >= 0);
 229         strv_sort(a);
 230
 231         STRV_FOREACH(i, a)
 232                 log_info("Got: <%s>", *i);
 233
 234         assert_se(streq(a[0], "one=2"));
 235         assert_se(streq(a[1], "twelve=12"));
 236         assert_se(streq(a[2], "twentyone=21"));
 237         assert_se(streq(a[3], "twentytwo=22"));
 238         assert_se(streq(a[4], "xxx=0x222"));
 239         assert_se(streq(a[5], "xxx_minus_three= - 3"));
 240         assert_se(streq(a[6], "yyy=2"));
 241         assert_se(streq(a[7], "zzz=replacement"));
 242         assert_se(streq(a[8], "zzzz="));
 243         assert_se(streq(a[9], "zzzzz="));
 244         assert_se(a[10] == NULL);
 245
 246         r = merge_env_file(&a, NULL, t);
 247         assert_se(r >= 0);
 248         strv_sort(a);
 249
 250         STRV_FOREACH(i, a)
 251                 log_info("Got2: <%s>", *i);
 252
 253         assert_se(streq(a[0], "one=2"));
 254         assert_se(streq(a[1], "twelve=12"));
 255         assert_se(streq(a[2], "twentyone=21"));
 256         assert_se(streq(a[3], "twentytwo=22"));
 257         assert_se(streq(a[4], "xxx=0x222"));
 258         assert_se(streq(a[5], "xxx_minus_three=0x222 - 3"));
 259         assert_se(streq(a[6], "yyy=2"));
 260         assert_se(streq(a[7], "zzz=replacement"));
 261         assert_se(streq(a[8], "zzzz="));
 262         assert_se(streq(a[9], "zzzzz="));
 263         assert_se(a[10] == NULL);
 264 }
 265
 266 static void test_merge_env_file_invalid(void) {
 267         char t[] = "/tmp/test-fileio-XXXXXX";
 268         int fd, r;
 269         _cleanup_fclose_ FILE *f = NULL;
 270         _cleanup_strv_free_ char **a = NULL;
 271         char **i;
 272
 273         fd = mkostemp_safe(t);
 274         assert_se(fd >= 0);
 275
 276         log_info("/* %s (%s) */", __func__, t);
 277
 278         f = fdopen(fd, "w");
 279         assert_se(f);
 280
 281         r = write_string_stream(f,
 282                                 "unset one   \n"
 283                                 "unset one=   \n"
 284                                 "unset one=1   \n"
 285                                 "one   \n"
 286                                 "one =  \n"
 287                                 "one two =\n"
 288                                 "\x20two=\n"
 289                                 "#comment=comment\n"
 290                                 ";comment2=comment2\n"
 291                                 "#\n"
 292                                 "\n\n"                  /* empty line */
 293                                 , WRITE_STRING_FILE_AVOID_NEWLINE);
 294         assert(r >= 0);
 295
 296         r = merge_env_file(&a, NULL, t);
 297         assert_se(r >= 0);
 298
 299         STRV_FOREACH(i, a)
 300                 log_info("Got: <%s>", *i);
 301
 302         assert_se(strv_isempty(a));
 303 }
 304
 305 static void test_executable_is_script(void) {
 306         char t[] = "/tmp/test-executable-XXXXXX";
 307         int fd, r;
 308         FILE *f;
 309         char *command;
 310
 311         fd = mkostemp_safe(t);
 312         assert_se(fd >= 0);
 313
 314         f = fdopen(fd, "w");
 315         assert_se(f);
 316
 317         fputs("#! /bin/script -a -b \ngoo goo", f);
 318         fflush(f);
 319
 320         r = executable_is_script(t, &command);
 321         assert_se(r > 0);
 322         assert_se(streq(command, "/bin/script"));
 323         free(command);
 324
 325         r = executable_is_script("/bin/sh", &command);
 326         assert_se(r == 0);
 327
 328         r = executable_is_script("/usr/bin/yum", &command);
 329         assert_se(r > 0 || r == -ENOENT);
 330         if (r > 0) {
 331                 assert_se(startswith(command, "/"));
 332                 free(command);
 333         }
 334
 335         fclose(f);
 336         unlink(t);
 337 }
 338
 339 static void test_status_field(void) {
 340         _cleanup_free_ char *t = NULL, *p = NULL, *s = NULL, *z = NULL;
 341         unsigned long long total = 0, buffers = 0;
 342         int r;
 343
 344         assert_se(get_proc_field("/proc/self/status", "Threads", WHITESPACE, &t) == 0);
 345         puts(t);
 346         assert_se(streq(t, "1"));
 347
 348         r = get_proc_field("/proc/meminfo", "MemTotal", WHITESPACE, &p);
 349         if (r != -ENOENT) {
 350                 assert_se(r == 0);
 351                 puts(p);
 352                 assert_se(safe_atollu(p, &total) == 0);
 353         }
 354
 355         r = get_proc_field("/proc/meminfo", "Buffers", WHITESPACE, &s);
 356         if (r != -ENOENT) {
 357                 assert_se(r == 0);
 358                 puts(s);
 359                 assert_se(safe_atollu(s, &buffers) == 0);
 360         }
 361
 362         if (p)
 363                 assert_se(buffers < total);
 364
 365         /* Seccomp should be a good test for field full of zeros. */
 366         r = get_proc_field("/proc/meminfo", "Seccomp", WHITESPACE, &z);
 367         if (r != -ENOENT) {
 368                 assert_se(r == 0);
 369                 puts(z);
 370                 assert_se(safe_atollu(z, &buffers) == 0);
 371         }
 372 }
 373
 374 static void test_capeff(void) {
 375         int pid, p;
 376
 377         for (pid = 0; pid < 2; pid++) {
 378                 _cleanup_free_ char *capeff = NULL;
 379                 int r;
 380
 381                 r = get_process_capeff(0, &capeff);
 382                 log_info("capeff: '%s' (r=%d)", capeff, r);
 383
 384                 if (IN_SET(r, -ENOENT, -EPERM))
 385                         return;
 386
 387                 assert_se(r == 0);
 388                 assert_se(*capeff);
 389                 p = capeff[strspn(capeff, HEXDIGITS)];
 390                 assert_se(!p || isspace(p));
 391         }
 392 }
 393
 394 static void test_write_string_stream(void) {
 395         char fn[] = "/tmp/test-write_string_stream-XXXXXX";
 396         FILE *f = NULL;
 397         int fd;
 398         char buf[64];
 399
 400         fd = mkostemp_safe(fn);
 401         assert_se(fd >= 0);
 402
 403         f = fdopen(fd, "r");
 404         assert_se(f);
 405         assert_se(write_string_stream(f, "boohoo", 0) < 0);
 406         f = safe_fclose(f);
 407
 408         f = fopen(fn, "r+");
 409         assert_se(f);
 410
 411         assert_se(write_string_stream(f, "boohoo", 0) == 0);
 412         rewind(f);
 413
 414         assert_se(fgets(buf, sizeof(buf), f));
 415         assert_se(streq(buf, "boohoo\n"));
 416         f = safe_fclose(f);
 417
 418         f = fopen(fn, "w+");
 419         assert_se(f);
 420
 421         assert_se(write_string_stream(f, "boohoo", WRITE_STRING_FILE_AVOID_NEWLINE) == 0);
 422         rewind(f);
 423
 424         assert_se(fgets(buf, sizeof(buf), f));
 425         printf(">%s<", buf);
 426         assert_se(streq(buf, "boohoo"));
 427         f = safe_fclose(f);
 428
 429         unlink(fn);
 430 }
 431
 432 static void test_write_string_file(void) {
 433         char fn[] = "/tmp/test-write_string_file-XXXXXX";
 434         char buf[64] = {};
 435         _cleanup_close_ int fd;
 436
 437         fd = mkostemp_safe(fn);
 438         assert_se(fd >= 0);
 439
 440         assert_se(write_string_file(fn, "boohoo", WRITE_STRING_FILE_CREATE) == 0);
 441
 442         assert_se(read(fd, buf, sizeof(buf)) == 7);
 443         assert_se(streq(buf, "boohoo\n"));
 444
 445         unlink(fn);
 446 }
 447
 448 static void test_write_string_file_no_create(void) {
 449         char fn[] = "/tmp/test-write_string_file_no_create-XXXXXX";
 450         _cleanup_close_ int fd;
 451         char buf[64] = {0};
 452
 453         fd = mkostemp_safe(fn);
 454         assert_se(fd >= 0);
 455
 456         assert_se(write_string_file("/a/file/which/does/not/exists/i/guess", "boohoo", 0) < 0);
 457         assert_se(write_string_file(fn, "boohoo", 0) == 0);
 458
 459         assert_se(read(fd, buf, sizeof(buf)) == STRLEN("boohoo\n"));
 460         assert_se(streq(buf, "boohoo\n"));
 461
 462         unlink(fn);
 463 }
 464
 465 static void test_write_string_file_verify(void) {
 466         _cleanup_free_ char *buf = NULL, *buf2 = NULL;
 467         int r;
 468
 469         assert_se(read_one_line_file("/proc/cmdline", &buf) >= 0);
 470         assert_se((buf2 = strjoin(buf, "\n")));
 471
 472         r = write_string_file("/proc/cmdline", buf, 0);
 473         assert_se(IN_SET(r, -EACCES, -EIO));
 474         r = write_string_file("/proc/cmdline", buf2, 0);
 475         assert_se(IN_SET(r, -EACCES, -EIO));
 476
 477         assert_se(write_string_file("/proc/cmdline", buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE) == 0);
 478         assert_se(write_string_file("/proc/cmdline", buf2, WRITE_STRING_FILE_VERIFY_ON_FAILURE) == 0);
 479
 480         r = write_string_file("/proc/cmdline", buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE|WRITE_STRING_FILE_AVOID_NEWLINE);
 481         assert_se(IN_SET(r, -EACCES, -EIO));
 482         assert_se(write_string_file("/proc/cmdline", buf2, WRITE_STRING_FILE_VERIFY_ON_FAILURE|WRITE_STRING_FILE_AVOID_NEWLINE) == 0);
 483 }
 484
 485 static void test_load_env_file_pairs(void) {
 486         char fn[] = "/tmp/test-load_env_file_pairs-XXXXXX";
 487         int fd;
 488         int r;
 489         _cleanup_fclose_ FILE *f = NULL;
 490         _cleanup_strv_free_ char **l = NULL;
 491         char **k, **v;
 492
 493         fd = mkostemp_safe(fn);
 494         assert_se(fd >= 0);
 495
 496         r = write_string_file(fn,
 497                         "NAME=\"Arch Linux\"\n"
 498                         "ID=arch\n"
 499                         "PRETTY_NAME=\"Arch Linux\"\n"
 500                         "ANSI_COLOR=\"0;36\"\n"
 501                         "HOME_URL=\"https://www.archlinux.org/\"\n"
 502                         "SUPPORT_URL=\"https://bbs.archlinux.org/\"\n"
 503                         "BUG_REPORT_URL=\"https://bugs.archlinux.org/\"\n",
 504                         WRITE_STRING_FILE_CREATE);
 505         assert_se(r == 0);
 506
 507         f = fdopen(fd, "r");
 508         assert_se(f);
 509
 510         r = load_env_file_pairs(f, fn, NULL, &l);
 511         assert_se(r >= 0);
 512
 513         assert_se(strv_length(l) == 14);
 514         STRV_FOREACH_PAIR(k, v, l) {
 515                 assert_se(STR_IN_SET(*k, "NAME", "ID", "PRETTY_NAME", "ANSI_COLOR", "HOME_URL", "SUPPORT_URL", "BUG_REPORT_URL"));
 516                 printf("%s=%s\n", *k, *v);
 517                 if (streq(*k, "NAME")) assert_se(streq(*v, "Arch Linux"));
 518                 if (streq(*k, "ID")) assert_se(streq(*v, "arch"));
 519                 if (streq(*k, "PRETTY_NAME")) assert_se(streq(*v, "Arch Linux"));
 520                 if (streq(*k, "ANSI_COLOR")) assert_se(streq(*v, "0;36"));
 521                 if (streq(*k, "HOME_URL")) assert_se(streq(*v, "https://www.archlinux.org/"));
 522                 if (streq(*k, "SUPPORT_URL")) assert_se(streq(*v, "https://bbs.archlinux.org/"));
 523                 if (streq(*k, "BUG_REPORT_URL")) assert_se(streq(*v, "https://bugs.archlinux.org/"));
 524         }
 525
 526         unlink(fn);
 527 }
 528
 529 static void test_search_and_fopen(void) {
 530         const char *dirs[] = {"/tmp/foo/bar", "/tmp", NULL};
 531         char name[] = "/tmp/test-search_and_fopen.XXXXXX";
 532         int fd = -1;
 533         int r;
 534         FILE *f;
 535
 536         fd = mkostemp_safe(name);
 537         assert_se(fd >= 0);
 538         close(fd);
 539
 540         r = search_and_fopen(basename(name), "r", NULL, dirs, &f);
 541         assert_se(r >= 0);
 542         fclose(f);
 543
 544         r = search_and_fopen(name, "r", NULL, dirs, &f);
 545         assert_se(r >= 0);
 546         fclose(f);
 547
 548         r = search_and_fopen(basename(name), "r", "/", dirs, &f);
 549         assert_se(r >= 0);
 550         fclose(f);
 551
 552         r = search_and_fopen("/a/file/which/does/not/exist/i/guess", "r", NULL, dirs, &f);
 553         assert_se(r < 0);
 554         r = search_and_fopen("afilewhichdoesnotexistiguess", "r", NULL, dirs, &f);
 555         assert_se(r < 0);
 556
 557         r = unlink(name);
 558         assert_se(r == 0);
 559
 560         r = search_and_fopen(basename(name), "r", NULL, dirs, &f);
 561         assert_se(r < 0);
 562 }
 563
 564
 565 static void test_search_and_fopen_nulstr(void) {
 566         const char dirs[] = "/tmp/foo/bar\0/tmp\0";
 567         char name[] = "/tmp/test-search_and_fopen.XXXXXX";
 568         int fd = -1;
 569         int r;
 570         FILE *f;
 571
 572         fd = mkostemp_safe(name);
 573         assert_se(fd >= 0);
 574         close(fd);
 575
 576         r = search_and_fopen_nulstr(basename(name), "r", NULL, dirs, &f);
 577         assert_se(r >= 0);
 578         fclose(f);
 579
 580         r = search_and_fopen_nulstr(name, "r", NULL, dirs, &f);
 581         assert_se(r >= 0);
 582         fclose(f);
 583
 584         r = search_and_fopen_nulstr("/a/file/which/does/not/exist/i/guess", "r", NULL, dirs, &f);
 585         assert_se(r < 0);
 586         r = search_and_fopen_nulstr("afilewhichdoesnotexistiguess", "r", NULL, dirs, &f);
 587         assert_se(r < 0);
 588
 589         r = unlink(name);
 590         assert_se(r == 0);
 591
 592         r = search_and_fopen_nulstr(basename(name), "r", NULL, dirs, &f);
 593         assert_se(r < 0);
 594 }
 595
 596 static void test_writing_tmpfile(void) {
 597         char name[] = "/tmp/test-systemd_writing_tmpfile.XXXXXX";
 598         _cleanup_free_ char *contents = NULL;
 599         size_t size;
 600         int r;
 601         _cleanup_close_ int fd = -1;
 602         struct iovec iov[3];
 603
 604         iov[0] = IOVEC_MAKE_STRING("abc\n");
 605         iov[1] = IOVEC_MAKE_STRING(ALPHANUMERICAL "\n");
 606         iov[2] = IOVEC_MAKE_STRING("");
 607
 608         fd = mkostemp_safe(name);
 609         printf("tmpfile: %s", name);
 610
 611         r = writev(fd, iov, 3);
 612         assert_se(r >= 0);
 613
 614         r = read_full_file(name, &contents, &size);
 615         assert_se(r == 0);
 616         printf("contents: %s", contents);
 617         assert_se(streq(contents, "abc\n" ALPHANUMERICAL "\n"));
 618
 619         unlink(name);
 620 }
 621
 622 static void test_tempfn(void) {
 623         char *ret = NULL, *p;
 624
 625         assert_se(tempfn_xxxxxx("/foo/bar/waldo", NULL, &ret) >= 0);
 626         assert_se(streq_ptr(ret, "/foo/bar/.#waldoXXXXXX"));
 627         free(ret);
 628
 629         assert_se(tempfn_xxxxxx("/foo/bar/waldo", "[miau]", &ret) >= 0);
 630         assert_se(streq_ptr(ret, "/foo/bar/.#[miau]waldoXXXXXX"));
 631         free(ret);
 632
 633         assert_se(tempfn_random("/foo/bar/waldo", NULL, &ret) >= 0);
 634         assert_se(p = startswith(ret, "/foo/bar/.#waldo"));
 635         assert_se(strlen(p) == 16);
 636         assert_se(in_charset(p, "0123456789abcdef"));
 637         free(ret);
 638
 639         assert_se(tempfn_random("/foo/bar/waldo", "[wuff]", &ret) >= 0);
 640         assert_se(p = startswith(ret, "/foo/bar/.#[wuff]waldo"));
 641         assert_se(strlen(p) == 16);
 642         assert_se(in_charset(p, "0123456789abcdef"));
 643         free(ret);
 644
 645         assert_se(tempfn_random_child("/foo/bar/waldo", NULL, &ret) >= 0);
 646         assert_se(p = startswith(ret, "/foo/bar/waldo/.#"));
 647         assert_se(strlen(p) == 16);
 648         assert_se(in_charset(p, "0123456789abcdef"));
 649         free(ret);
 650
 651         assert_se(tempfn_random_child("/foo/bar/waldo", "[kikiriki]", &ret) >= 0);
 652         assert_se(p = startswith(ret, "/foo/bar/waldo/.#[kikiriki]"));
 653         assert_se(strlen(p) == 16);
 654         assert_se(in_charset(p, "0123456789abcdef"));
 655         free(ret);
 656 }
 657
 658 static const char buffer[] =
 659         "Some test data\n"
 660         "With newlines, and a NUL byte\0"
 661         "\n"
 662         "an empty line\n"
 663         "an ignored line\n"
 664         "and a very long line that is supposed to be truncated, because it is so long\n";
 665
 666 static void test_read_line_one_file(FILE *f) {
 667         _cleanup_free_ char *line = NULL;
 668
 669         assert_se(read_line(f, (size_t) -1, &line) == 15 && streq(line, "Some test data"));
 670         line = mfree(line);
 671
 672         assert_se(read_line(f, 1024, &line) == 30 && streq(line, "With newlines, and a NUL byte"));
 673         line = mfree(line);
 674
 675         assert_se(read_line(f, 1024, &line) == 1 && streq(line, ""));
 676         line = mfree(line);
 677
 678         assert_se(read_line(f, 1024, &line) == 14 && streq(line, "an empty line"));
 679         line = mfree(line);
 680
 681         assert_se(read_line(f, (size_t) -1, NULL) == 16);
 682
 683         assert_se(read_line(f, 16, &line) == -ENOBUFS);
 684         line = mfree(line);
 685
 686         /* read_line() stopped when it hit the limit, that means when we continue reading we'll read at the first
 687          * character after the previous limit. Let's make use of tha to continue our test. */
 688         assert_se(read_line(f, 1024, &line) == 61 && streq(line, "line that is supposed to be truncated, because it is so long"));
 689         line = mfree(line);
 690
 691         assert_se(read_line(f, 1024, &line) == 1 && streq(line, ""));
 692         line = mfree(line);
 693
 694         assert_se(read_line(f, 1024, &line) == 0 && streq(line, ""));
 695 }
 696
 697 static void test_read_line(void) {
 698         _cleanup_fclose_ FILE *f = NULL;
 699
 700         f = fmemopen((void*) buffer, sizeof(buffer), "re");
 701         assert_se(f);
 702
 703         test_read_line_one_file(f);
 704 }
 705
 706 static void test_read_line2(void) {
 707         char name[] = "/tmp/test-fileio.XXXXXX";
 708         int fd;
 709         _cleanup_fclose_ FILE *f = NULL;
 710
 711         fd = mkostemp_safe(name);
 712         assert_se(fd >= 0);
 713         assert_se((size_t) write(fd, buffer, sizeof(buffer)) == sizeof(buffer));
 714
 715         assert_se(lseek(fd, 0, SEEK_SET) == 0);
 716         assert_se(f = fdopen(fd, "r"));
 717
 718         test_read_line_one_file(f);
 719 }
 720
 721 static void test_read_line3(void) {
 722         _cleanup_fclose_ FILE *f = NULL;
 723         _cleanup_free_ char *line = NULL;
 724         int r;
 725
 726         f = fopen("/proc/cmdline", "re");
 727         if (!f && IN_SET(errno, ENOENT, EPERM))
 728                 return;
 729         assert_se(f);
 730
 731         r = read_line(f, LINE_MAX, &line);
 732         assert_se((size_t) r == strlen(line) + 1);
 733         assert_se(read_line(f, LINE_MAX, NULL) == 0);
 734 }
 735
 736 int main(int argc, char *argv[]) {
 737         log_set_max_level(LOG_DEBUG);
 738         log_parse_environment();
 739         log_open();
 740
 741         test_parse_env_file();
 742         test_parse_multiline_env_file();
 743         test_merge_env_file();
 744         test_merge_env_file_invalid();
 745         test_executable_is_script();
 746         test_status_field();
 747         test_capeff();
 748         test_write_string_stream();
 749         test_write_string_file();
 750         test_write_string_file_no_create();
 751         test_write_string_file_verify();
 752         test_load_env_file_pairs();
 753         test_search_and_fopen();
 754         test_search_and_fopen_nulstr();
 755         test_writing_tmpfile();
 756         test_tempfn();
 757         test_read_line();
 758         test_read_line2();
 759         test_read_line3();
 760
 761         return 0;
 762 }