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-rw-r--r--src/test/test-fileio.c1043
1 files changed, 1043 insertions, 0 deletions
diff --git a/src/test/test-fileio.c b/src/test/test-fileio.c
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--- /dev/null
+++ b/src/test/test-fileio.c
@@ -0,0 +1,1043 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "ctype.h"
+#include "env-file.h"
+#include "env-util.h"
+#include "errno-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "io-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "process-util.h"
+#include "random-util.h"
+#include "rm-rf.h"
+#include "socket-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "tests.h"
+#include "tmpfile-util.h"
+#include "util.h"
+
+TEST(parse_env_file) {
+ _cleanup_(unlink_tempfilep) char
+ t[] = "/tmp/test-fileio-in-XXXXXX",
+ p[] = "/tmp/test-fileio-out-XXXXXX";
+ FILE *f;
+ _cleanup_free_ char *one = NULL, *two = NULL, *three = NULL, *four = NULL, *five = NULL,
+ *six = NULL, *seven = NULL, *eight = NULL, *nine = NULL, *ten = NULL,
+ *eleven = NULL, *twelve = NULL, *thirteen = NULL;
+ _cleanup_strv_free_ char **a = NULL, **b = NULL;
+ unsigned k;
+ int r;
+
+ assert_se(fmkostemp_safe(t, "w", &f) == 0);
+ fputs("one=BAR \n"
+ "# comment\n"
+ " # comment \n"
+ " ; comment \n"
+ " two = bar \n"
+ "invalid line\n"
+ "invalid line #comment\n"
+ "three = \"333\n"
+ "xxxx\"\n"
+ "four = \'44\\\"44\'\n"
+ "five = \"55\\\"55\" \"FIVE\" cinco \n"
+ "six = seis sechs\\\n"
+ " sis\n"
+ "seven=\"sevenval\" #nocomment\n"
+ "eight=eightval #nocomment\n"
+ "export nine=nineval\n"
+ "ten=ignored\n"
+ "ten=ignored\n"
+ "ten=\n"
+ "eleven=\\value\n"
+ "twelve=\"\\value\"\n"
+ "thirteen='\\value'", f);
+
+ fflush(f);
+ fclose(f);
+
+ r = load_env_file(NULL, t, &a);
+ assert_se(r >= 0);
+
+ STRV_FOREACH(i, a)
+ log_info("Got: <%s>", *i);
+
+ assert_se(streq_ptr(a[0], "one=BAR"));
+ assert_se(streq_ptr(a[1], "two=bar"));
+ assert_se(streq_ptr(a[2], "three=333\nxxxx"));
+ assert_se(streq_ptr(a[3], "four=44\\\"44"));
+ assert_se(streq_ptr(a[4], "five=55\"55FIVEcinco"));
+ assert_se(streq_ptr(a[5], "six=seis sechs sis"));
+ assert_se(streq_ptr(a[6], "seven=sevenval#nocomment"));
+ assert_se(streq_ptr(a[7], "eight=eightval #nocomment"));
+ assert_se(streq_ptr(a[8], "export nine=nineval"));
+ assert_se(streq_ptr(a[9], "ten="));
+ assert_se(streq_ptr(a[10], "eleven=value"));
+ assert_se(streq_ptr(a[11], "twelve=\\value"));
+ assert_se(streq_ptr(a[12], "thirteen=\\value"));
+ assert_se(a[13] == NULL);
+
+ strv_env_clean(a);
+
+ k = 0;
+ STRV_FOREACH(i, b) {
+ log_info("Got2: <%s>", *i);
+ assert_se(streq(*i, a[k++]));
+ }
+
+ r = parse_env_file(
+ NULL, t,
+ "one", &one,
+ "two", &two,
+ "three", &three,
+ "four", &four,
+ "five", &five,
+ "six", &six,
+ "seven", &seven,
+ "eight", &eight,
+ "export nine", &nine,
+ "ten", &ten,
+ "eleven", &eleven,
+ "twelve", &twelve,
+ "thirteen", &thirteen);
+ assert_se(r == 0);
+
+ log_info("one=[%s]", strna(one));
+ log_info("two=[%s]", strna(two));
+ log_info("three=[%s]", strna(three));
+ log_info("four=[%s]", strna(four));
+ log_info("five=[%s]", strna(five));
+ log_info("six=[%s]", strna(six));
+ log_info("seven=[%s]", strna(seven));
+ log_info("eight=[%s]", strna(eight));
+ log_info("export nine=[%s]", strna(nine));
+ log_info("ten=[%s]", strna(nine));
+ log_info("eleven=[%s]", strna(eleven));
+ log_info("twelve=[%s]", strna(twelve));
+ log_info("thirteen=[%s]", strna(thirteen));
+
+ assert_se(streq(one, "BAR"));
+ assert_se(streq(two, "bar"));
+ assert_se(streq(three, "333\nxxxx"));
+ assert_se(streq(four, "44\\\"44"));
+ assert_se(streq(five, "55\"55FIVEcinco"));
+ assert_se(streq(six, "seis sechs sis"));
+ assert_se(streq(seven, "sevenval#nocomment"));
+ assert_se(streq(eight, "eightval #nocomment"));
+ assert_se(streq(nine, "nineval"));
+ assert_se(ten == NULL);
+ assert_se(streq(eleven, "value"));
+ assert_se(streq(twelve, "\\value"));
+ assert_se(streq(thirteen, "\\value"));
+
+ {
+ /* prepare a temporary file to write the environment to */
+ _cleanup_close_ int fd = mkostemp_safe(p);
+ assert_se(fd >= 0);
+ }
+
+ r = write_env_file(p, a);
+ assert_se(r >= 0);
+
+ r = load_env_file(NULL, p, &b);
+ assert_se(r >= 0);
+}
+
+static void test_one_shell_var(const char *file, const char *variable, const char *value) {
+ _cleanup_free_ char *cmd = NULL, *from_shell = NULL;
+ _cleanup_pclose_ FILE *f = NULL;
+ size_t sz;
+
+ assert_se(cmd = strjoin(". ", file, " && /bin/echo -n \"$", variable, "\""));
+ assert_se(f = popen(cmd, "re"));
+ assert_se(read_full_stream(f, &from_shell, &sz) >= 0);
+ assert_se(sz == strlen(value));
+ assert_se(streq(from_shell, value));
+}
+
+TEST(parse_multiline_env_file) {
+ _cleanup_(unlink_tempfilep) char
+ t[] = "/tmp/test-fileio-in-XXXXXX",
+ p[] = "/tmp/test-fileio-out-XXXXXX";
+ FILE *f;
+ _cleanup_strv_free_ char **a = NULL, **b = NULL;
+ int r;
+
+ assert_se(fmkostemp_safe(t, "w", &f) == 0);
+ fputs("one=BAR\\\n"
+ "\\ \\ \\ \\ VAR\\\n"
+ "\\\tGAR\n"
+ "#comment\n"
+ "two=\"bar\\\n"
+ " var\\\n"
+ "\tgar\"\n"
+ "#comment\n"
+ "tri=\"bar \\\n"
+ " var \\\n"
+ "\tgar \"\n", f);
+
+ assert_se(fflush_and_check(f) >= 0);
+ fclose(f);
+
+ test_one_shell_var(t, "one", "BAR VAR\tGAR");
+ test_one_shell_var(t, "two", "bar var\tgar");
+ test_one_shell_var(t, "tri", "bar var \tgar ");
+
+ r = load_env_file(NULL, t, &a);
+ assert_se(r >= 0);
+
+ STRV_FOREACH(i, a)
+ log_info("Got: <%s>", *i);
+
+ assert_se(streq_ptr(a[0], "one=BAR VAR\tGAR"));
+ assert_se(streq_ptr(a[1], "two=bar var\tgar"));
+ assert_se(streq_ptr(a[2], "tri=bar var \tgar "));
+ assert_se(a[3] == NULL);
+
+ {
+ _cleanup_close_ int fd = mkostemp_safe(p);
+ assert_se(fd >= 0);
+ }
+
+ r = write_env_file(p, a);
+ assert_se(r >= 0);
+
+ r = load_env_file(NULL, p, &b);
+ assert_se(r >= 0);
+}
+
+TEST(merge_env_file) {
+ _cleanup_(unlink_tempfilep) char t[] = "/tmp/test-fileio-XXXXXX";
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_strv_free_ char **a = NULL;
+ int r;
+
+ assert_se(fmkostemp_safe(t, "w", &f) == 0);
+ log_info("/* %s (%s) */", __func__, t);
+
+ r = write_string_stream(f,
+ "one=1 \n"
+ "twelve=${one}2\n"
+ "twentyone=2${one}\n"
+ "one=2\n"
+ "twentytwo=2${one}\n"
+ "xxx_minus_three=$xxx - 3\n"
+ "xxx=0x$one$one$one\n"
+ "yyy=${one:-fallback}\n"
+ "zzz=${one:+replacement}\n"
+ "zzzz=${foobar:-${nothing}}\n"
+ "zzzzz=${nothing:+${nothing}}\n"
+ , WRITE_STRING_FILE_AVOID_NEWLINE);
+ assert_se(r >= 0);
+
+ r = merge_env_file(&a, NULL, t);
+ assert_se(r >= 0);
+ strv_sort(a);
+
+ STRV_FOREACH(i, a)
+ log_info("Got: <%s>", *i);
+
+ assert_se(streq(a[0], "one=2"));
+ assert_se(streq(a[1], "twelve=12"));
+ assert_se(streq(a[2], "twentyone=21"));
+ assert_se(streq(a[3], "twentytwo=22"));
+ assert_se(streq(a[4], "xxx=0x222"));
+ assert_se(streq(a[5], "xxx_minus_three= - 3"));
+ assert_se(streq(a[6], "yyy=2"));
+ assert_se(streq(a[7], "zzz=replacement"));
+ assert_se(streq(a[8], "zzzz="));
+ assert_se(streq(a[9], "zzzzz="));
+ assert_se(a[10] == NULL);
+
+ r = merge_env_file(&a, NULL, t);
+ assert_se(r >= 0);
+ strv_sort(a);
+
+ STRV_FOREACH(i, a)
+ log_info("Got2: <%s>", *i);
+
+ assert_se(streq(a[0], "one=2"));
+ assert_se(streq(a[1], "twelve=12"));
+ assert_se(streq(a[2], "twentyone=21"));
+ assert_se(streq(a[3], "twentytwo=22"));
+ assert_se(streq(a[4], "xxx=0x222"));
+ assert_se(streq(a[5], "xxx_minus_three=0x222 - 3"));
+ assert_se(streq(a[6], "yyy=2"));
+ assert_se(streq(a[7], "zzz=replacement"));
+ assert_se(streq(a[8], "zzzz="));
+ assert_se(streq(a[9], "zzzzz="));
+ assert_se(a[10] == NULL);
+}
+
+TEST(merge_env_file_invalid) {
+ _cleanup_(unlink_tempfilep) char t[] = "/tmp/test-fileio-XXXXXX";
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_strv_free_ char **a = NULL;
+ int r;
+
+ assert_se(fmkostemp_safe(t, "w", &f) == 0);
+ log_info("/* %s (%s) */", __func__, t);
+
+ r = write_string_stream(f,
+ "unset one \n"
+ "unset one= \n"
+ "unset one=1 \n"
+ "one \n"
+ "one = \n"
+ "one two =\n"
+ "\x20two=\n"
+ "#comment=comment\n"
+ ";comment2=comment2\n"
+ "#\n"
+ "\n\n" /* empty line */
+ , WRITE_STRING_FILE_AVOID_NEWLINE);
+ assert_se(r >= 0);
+
+ r = merge_env_file(&a, NULL, t);
+ assert_se(r >= 0);
+
+ STRV_FOREACH(i, a)
+ log_info("Got: <%s>", *i);
+
+ assert_se(strv_isempty(a));
+}
+
+TEST(executable_is_script) {
+ _cleanup_(unlink_tempfilep) char t[] = "/tmp/test-fileio-XXXXXX";
+ _cleanup_fclose_ FILE *f = NULL;
+ char *command;
+ int r;
+
+ assert_se(fmkostemp_safe(t, "w", &f) == 0);
+ fputs("#! /bin/script -a -b \ngoo goo", f);
+ fflush(f);
+
+ r = executable_is_script(t, &command);
+ assert_se(r > 0);
+ assert_se(streq(command, "/bin/script"));
+ free(command);
+
+ r = executable_is_script("/bin/sh", &command);
+ assert_se(r == 0);
+
+ r = executable_is_script("/usr/bin/yum", &command);
+ if (r > 0) {
+ assert_se(startswith(command, "/"));
+ free(command);
+ }
+}
+
+TEST(status_field) {
+ _cleanup_free_ char *t = NULL, *p = NULL, *s = NULL, *z = NULL;
+ unsigned long long total = 0, buffers = 0;
+ int r;
+
+ assert_se(get_proc_field("/proc/self/status", "Threads", WHITESPACE, &t) == 0);
+ puts(t);
+ assert_se(streq(t, "1"));
+
+ r = get_proc_field("/proc/meminfo", "MemTotal", WHITESPACE, &p);
+ if (r != -ENOENT) {
+ assert_se(r == 0);
+ puts(p);
+ assert_se(safe_atollu(p, &total) == 0);
+ }
+
+ r = get_proc_field("/proc/meminfo", "Buffers", WHITESPACE, &s);
+ if (r != -ENOENT) {
+ assert_se(r == 0);
+ puts(s);
+ assert_se(safe_atollu(s, &buffers) == 0);
+ }
+
+ if (p)
+ assert_se(buffers < total);
+
+ /* Seccomp should be a good test for field full of zeros. */
+ r = get_proc_field("/proc/meminfo", "Seccomp", WHITESPACE, &z);
+ if (r != -ENOENT) {
+ assert_se(r == 0);
+ puts(z);
+ assert_se(safe_atollu(z, &buffers) == 0);
+ }
+}
+
+TEST(capeff) {
+ for (int pid = 0; pid < 2; pid++) {
+ _cleanup_free_ char *capeff = NULL;
+ int r, p;
+
+ r = get_process_capeff(0, &capeff);
+ log_info("capeff: '%s' (r=%d)", capeff, r);
+
+ if (IN_SET(r, -ENOENT, -EPERM))
+ return;
+
+ assert_se(r == 0);
+ assert_se(*capeff);
+ p = capeff[strspn(capeff, HEXDIGITS)];
+ assert_se(!p || isspace(p));
+ }
+}
+
+TEST(write_string_stream) {
+ _cleanup_(unlink_tempfilep) char fn[] = "/tmp/test-write_string_stream-XXXXXX";
+ _cleanup_fclose_ FILE *f = NULL;
+ int fd;
+ char buf[64];
+
+ fd = mkostemp_safe(fn);
+ assert_se(fd >= 0);
+
+ f = fdopen(fd, "r");
+ assert_se(f);
+ assert_se(write_string_stream(f, "boohoo", 0) < 0);
+ f = safe_fclose(f);
+
+ f = fopen(fn, "r+");
+ assert_se(f);
+
+ assert_se(write_string_stream(f, "boohoo", 0) == 0);
+ rewind(f);
+
+ assert_se(fgets(buf, sizeof(buf), f));
+ assert_se(streq(buf, "boohoo\n"));
+ f = safe_fclose(f);
+
+ f = fopen(fn, "w+");
+ assert_se(f);
+
+ assert_se(write_string_stream(f, "boohoo", WRITE_STRING_FILE_AVOID_NEWLINE) == 0);
+ rewind(f);
+
+ assert_se(fgets(buf, sizeof(buf), f));
+ printf(">%s<", buf);
+ assert_se(streq(buf, "boohoo"));
+}
+
+TEST(write_string_file) {
+ _cleanup_(unlink_tempfilep) char fn[] = "/tmp/test-write_string_file-XXXXXX";
+ char buf[64] = {};
+ _cleanup_close_ int fd = -EBADF;
+
+ fd = mkostemp_safe(fn);
+ assert_se(fd >= 0);
+
+ assert_se(write_string_file(fn, "boohoo", WRITE_STRING_FILE_CREATE) == 0);
+
+ assert_se(read(fd, buf, sizeof(buf)) == 7);
+ assert_se(streq(buf, "boohoo\n"));
+}
+
+TEST(write_string_file_no_create) {
+ _cleanup_(unlink_tempfilep) char fn[] = "/tmp/test-write_string_file_no_create-XXXXXX";
+ _cleanup_close_ int fd = -EBADF;
+ char buf[64] = {};
+
+ fd = mkostemp_safe(fn);
+ assert_se(fd >= 0);
+
+ assert_se(write_string_file("/a/file/which/does/not/exists/i/guess", "boohoo", 0) < 0);
+ assert_se(write_string_file(fn, "boohoo", 0) == 0);
+
+ assert_se(read(fd, buf, sizeof buf) == (ssize_t) strlen("boohoo\n"));
+ assert_se(streq(buf, "boohoo\n"));
+}
+
+TEST(write_string_file_verify) {
+ _cleanup_free_ char *buf = NULL, *buf2 = NULL;
+ int r;
+
+ r = read_one_line_file("/proc/version", &buf);
+ if (r < 0 && ERRNO_IS_PRIVILEGE(r))
+ return;
+ assert_se(r >= 0);
+ assert_se(buf2 = strjoin(buf, "\n"));
+
+ r = write_string_file("/proc/version", buf, 0);
+ assert_se(IN_SET(r, -EACCES, -EIO));
+ r = write_string_file("/proc/version", buf2, 0);
+ assert_se(IN_SET(r, -EACCES, -EIO));
+
+ assert_se(write_string_file("/proc/version", buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE) == 0);
+ assert_se(write_string_file("/proc/version", buf2, WRITE_STRING_FILE_VERIFY_ON_FAILURE) == 0);
+
+ r = write_string_file("/proc/version", buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE|WRITE_STRING_FILE_AVOID_NEWLINE);
+ assert_se(IN_SET(r, -EACCES, -EIO));
+ assert_se(write_string_file("/proc/version", buf2, WRITE_STRING_FILE_VERIFY_ON_FAILURE|WRITE_STRING_FILE_AVOID_NEWLINE) == 0);
+}
+
+TEST(load_env_file_pairs) {
+ _cleanup_(unlink_tempfilep) char fn[] = "/tmp/test-load_env_file_pairs-XXXXXX";
+ int fd, r;
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_strv_free_ char **l = NULL;
+
+ fd = mkostemp_safe(fn);
+ assert_se(fd >= 0);
+
+ r = write_string_file(fn,
+ "NAME=\"Arch Linux\"\n"
+ "ID=arch\n"
+ "PRETTY_NAME=\"Arch Linux\"\n"
+ "ANSI_COLOR=\"0;36\"\n"
+ "HOME_URL=\"https://www.archlinux.org/\"\n"
+ "SUPPORT_URL=\"https://bbs.archlinux.org/\"\n"
+ "BUG_REPORT_URL=\"https://bugs.archlinux.org/\"\n",
+ WRITE_STRING_FILE_CREATE);
+ assert_se(r == 0);
+
+ f = fdopen(fd, "r");
+ assert_se(f);
+
+ r = load_env_file_pairs(f, fn, &l);
+ assert_se(r >= 0);
+
+ assert_se(strv_length(l) == 14);
+ STRV_FOREACH_PAIR(k, v, l) {
+ assert_se(STR_IN_SET(*k, "NAME", "ID", "PRETTY_NAME", "ANSI_COLOR", "HOME_URL", "SUPPORT_URL", "BUG_REPORT_URL"));
+ printf("%s=%s\n", *k, *v);
+ if (streq(*k, "NAME")) assert_se(streq(*v, "Arch Linux"));
+ if (streq(*k, "ID")) assert_se(streq(*v, "arch"));
+ if (streq(*k, "PRETTY_NAME")) assert_se(streq(*v, "Arch Linux"));
+ if (streq(*k, "ANSI_COLOR")) assert_se(streq(*v, "0;36"));
+ if (streq(*k, "HOME_URL")) assert_se(streq(*v, "https://www.archlinux.org/"));
+ if (streq(*k, "SUPPORT_URL")) assert_se(streq(*v, "https://bbs.archlinux.org/"));
+ if (streq(*k, "BUG_REPORT_URL")) assert_se(streq(*v, "https://bugs.archlinux.org/"));
+ }
+}
+
+TEST(search_and_fopen) {
+ static const char* const dirs[] = {
+ "/tmp/foo/bar",
+ "/tmp",
+ NULL
+ };
+ char name[] = "/tmp/test-search_and_fopen.XXXXXX";
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *p = NULL;
+ _cleanup_close_ int fd = -1;
+ const char *e;
+ int r;
+
+ fd = mkostemp_safe(name);
+ assert_se(fd >= 0);
+ fd = safe_close(fd);
+
+ r = search_and_fopen(basename(name), "re", NULL, (const char**) dirs, &f, &p);
+ assert_se(r >= 0);
+ assert_se(e = path_startswith(p, "/tmp/"));
+ assert_se(streq(basename(name), e));
+ f = safe_fclose(f);
+ p = mfree(p);
+
+ r = search_and_fopen(name, "re", NULL, (const char**) dirs, &f, &p);
+ assert_se(r >= 0);
+ assert_se(path_equal(name, p));
+ f = safe_fclose(f);
+ p = mfree(p);
+
+ r = search_and_fopen(basename(name), "re", "/", (const char**) dirs, &f, &p);
+ assert_se(r >= 0);
+ assert_se(e = path_startswith(p, "/tmp/"));
+ assert_se(streq(basename(name), e));
+ f = safe_fclose(f);
+ p = mfree(p);
+
+ r = search_and_fopen("/a/file/which/does/not/exist/i/guess", "re", NULL, (const char**) dirs, &f, &p);
+ assert_se(r == -ENOENT);
+ r = search_and_fopen("afilewhichdoesnotexistiguess", "re", NULL, (const char**) dirs, &f, &p);
+ assert_se(r == -ENOENT);
+
+ r = unlink(name);
+ assert_se(r == 0);
+
+ r = search_and_fopen(basename(name), "re", NULL, (const char**) dirs, &f, &p);
+ assert_se(r == -ENOENT);
+}
+
+TEST(search_and_fopen_nulstr) {
+ static const char dirs[] =
+ "/tmp/foo/bar\0"
+ "/tmp\0";
+
+ _cleanup_(unlink_tempfilep) char name[] = "/tmp/test-search_and_fopen.XXXXXX";
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *p = NULL;
+ _cleanup_close_ int fd = -1;
+ const char *e;
+ int r;
+
+ fd = mkostemp_safe(name);
+ assert_se(fd >= 0);
+ fd = safe_close(fd);
+
+ r = search_and_fopen_nulstr(basename(name), "re", NULL, dirs, &f, &p);
+ assert_se(r >= 0);
+ assert_se(e = path_startswith(p, "/tmp/"));
+ assert_se(streq(basename(name), e));
+ f = safe_fclose(f);
+ p = mfree(p);
+
+ r = search_and_fopen_nulstr(name, "re", NULL, dirs, &f, &p);
+ assert_se(r >= 0);
+ assert_se(path_equal(name, p));
+ f = safe_fclose(f);
+ p = mfree(p);
+
+ r = search_and_fopen_nulstr("/a/file/which/does/not/exist/i/guess", "re", NULL, dirs, &f, &p);
+ assert_se(r == -ENOENT);
+ r = search_and_fopen_nulstr("afilewhichdoesnotexistiguess", "re", NULL, dirs, &f, &p);
+ assert_se(r == -ENOENT);
+
+ r = unlink(name);
+ assert_se(r == 0);
+
+ r = search_and_fopen_nulstr(basename(name), "re", NULL, dirs, &f, &p);
+ assert_se(r == -ENOENT);
+}
+
+TEST(writing_tmpfile) {
+ _cleanup_(unlink_tempfilep) char name[] = "/tmp/test-systemd_writing_tmpfile.XXXXXX";
+ _cleanup_free_ char *contents = NULL;
+ size_t size;
+ _cleanup_close_ int fd = -1;
+ int r;
+
+ struct iovec iov[] = {
+ IOVEC_MAKE_STRING("abc\n"),
+ IOVEC_MAKE_STRING(ALPHANUMERICAL "\n"),
+ IOVEC_MAKE_STRING(""),
+ };
+
+ fd = mkostemp_safe(name);
+ printf("tmpfile: %s", name);
+
+ r = writev(fd, iov, 3);
+ assert_se(r >= 0);
+
+ r = read_full_file(name, &contents, &size);
+ assert_se(r == 0);
+ printf("contents: %s", contents);
+ assert_se(streq(contents, "abc\n" ALPHANUMERICAL "\n"));
+}
+
+TEST(tempfn) {
+ char *ret = NULL, *p;
+
+ assert_se(tempfn_xxxxxx("/foo/bar/waldo", NULL, &ret) >= 0);
+ assert_se(streq_ptr(ret, "/foo/bar/.#waldoXXXXXX"));
+ free(ret);
+
+ assert_se(tempfn_xxxxxx("/foo/bar/waldo", "[miau]", &ret) >= 0);
+ assert_se(streq_ptr(ret, "/foo/bar/.#[miau]waldoXXXXXX"));
+ free(ret);
+
+ assert_se(tempfn_random("/foo/bar/waldo", NULL, &ret) >= 0);
+ assert_se(p = startswith(ret, "/foo/bar/.#waldo"));
+ assert_se(strlen(p) == 16);
+ assert_se(in_charset(p, "0123456789abcdef"));
+ free(ret);
+
+ assert_se(tempfn_random("/foo/bar/waldo", "[wuff]", &ret) >= 0);
+ assert_se(p = startswith(ret, "/foo/bar/.#[wuff]waldo"));
+ assert_se(strlen(p) == 16);
+ assert_se(in_charset(p, "0123456789abcdef"));
+ free(ret);
+
+ assert_se(tempfn_random_child("/foo/bar/waldo", NULL, &ret) >= 0);
+ assert_se(p = startswith(ret, "/foo/bar/waldo/.#"));
+ assert_se(strlen(p) == 16);
+ assert_se(in_charset(p, "0123456789abcdef"));
+ free(ret);
+
+ assert_se(tempfn_random_child("/foo/bar/waldo", "[kikiriki]", &ret) >= 0);
+ assert_se(p = startswith(ret, "/foo/bar/waldo/.#[kikiriki]"));
+ assert_se(strlen(p) == 16);
+ assert_se(in_charset(p, "0123456789abcdef"));
+ free(ret);
+}
+
+static const char chars[] =
+ "Aąę„”\n루\377";
+
+DISABLE_WARNING_TYPE_LIMITS;
+
+TEST(fgetc) {
+ _cleanup_fclose_ FILE *f = NULL;
+ char c;
+
+ assert_se(f = fmemopen_unlocked((void*) chars, sizeof(chars), "r"));
+
+ for (size_t i = 0; i < sizeof(chars); i++) {
+ assert_se(safe_fgetc(f, &c) == 1);
+ assert_se(c == chars[i]);
+
+ if (ungetc(c, f) == EOF) {
+ /* EOF is -1, and hence we can't push value 255 in this way – if char is signed */
+ assert_se(c == (char) EOF);
+ assert_se(CHAR_MIN == -128); /* verify that char is signed on this platform */
+ } else {
+ assert_se(safe_fgetc(f, &c) == 1);
+ assert_se(c == chars[i]);
+ }
+
+ /* But it works when we push it properly cast */
+ assert_se(ungetc((unsigned char) c, f) != EOF);
+ assert_se(safe_fgetc(f, &c) == 1);
+ assert_se(c == chars[i]);
+ }
+
+ assert_se(safe_fgetc(f, &c) == 0);
+}
+
+REENABLE_WARNING;
+
+static const char buffer[] =
+ "Some test data\n"
+ "루Non-ascii chars: ąę„”\n"
+ "terminators\r\n"
+ "and even more\n\r"
+ "now the same with a NUL\n\0"
+ "and more\r\0"
+ "and even more\r\n\0"
+ "and yet even more\n\r\0"
+ "With newlines, and a NUL byte\0"
+ "\n"
+ "an empty line\n"
+ "an ignored line\n"
+ "and a very long line that is supposed to be truncated, because it is so long\n";
+
+static void test_read_line_one_file(FILE *f) {
+ _cleanup_free_ char *line = NULL;
+
+ assert_se(read_line(f, SIZE_MAX, &line) == 15 && streq(line, "Some test data"));
+ line = mfree(line);
+
+ assert_se(read_line(f, SIZE_MAX, &line) > 0 && streq(line, "루Non-ascii chars: ąę„”"));
+ line = mfree(line);
+
+ assert_se(read_line(f, SIZE_MAX, &line) == 13 && streq(line, "terminators"));
+ line = mfree(line);
+
+ assert_se(read_line(f, SIZE_MAX, &line) == 15 && streq(line, "and even more"));
+ line = mfree(line);
+
+ assert_se(read_line(f, SIZE_MAX, &line) == 25 && streq(line, "now the same with a NUL"));
+ line = mfree(line);
+
+ assert_se(read_line(f, SIZE_MAX, &line) == 10 && streq(line, "and more"));
+ line = mfree(line);
+
+ assert_se(read_line(f, SIZE_MAX, &line) == 16 && streq(line, "and even more"));
+ line = mfree(line);
+
+ assert_se(read_line(f, SIZE_MAX, &line) == 20 && streq(line, "and yet even more"));
+ line = mfree(line);
+
+ assert_se(read_line(f, 1024, &line) == 30 && streq(line, "With newlines, and a NUL byte"));
+ line = mfree(line);
+
+ assert_se(read_line(f, 1024, &line) == 1 && streq(line, ""));
+ line = mfree(line);
+
+ assert_se(read_line(f, 1024, &line) == 14 && streq(line, "an empty line"));
+ line = mfree(line);
+
+ assert_se(read_line(f, SIZE_MAX, NULL) == 16);
+
+ assert_se(read_line(f, 16, &line) == -ENOBUFS);
+ line = mfree(line);
+
+ /* read_line() stopped when it hit the limit, that means when we continue reading we'll read at the first
+ * character after the previous limit. Let's make use of that to continue our test. */
+ assert_se(read_line(f, 1024, &line) == 62 && streq(line, "line that is supposed to be truncated, because it is so long"));
+ line = mfree(line);
+
+ assert_se(read_line(f, 1024, &line) == 0 && streq(line, ""));
+}
+
+TEST(read_line1) {
+ _cleanup_fclose_ FILE *f = NULL;
+
+ assert_se(f = fmemopen_unlocked((void*) buffer, sizeof(buffer), "r"));
+ test_read_line_one_file(f);
+}
+
+TEST(read_line2) {
+ _cleanup_(unlink_tempfilep) char name[] = "/tmp/test-fileio.XXXXXX";
+ int fd;
+ _cleanup_fclose_ FILE *f = NULL;
+
+ fd = mkostemp_safe(name);
+ assert_se(fd >= 0);
+ assert_se((size_t) write(fd, buffer, sizeof(buffer)) == sizeof(buffer));
+
+ assert_se(lseek(fd, 0, SEEK_SET) == 0);
+ assert_se(f = fdopen(fd, "r"));
+
+ test_read_line_one_file(f);
+}
+
+TEST(read_line3) {
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *line = NULL;
+ int r;
+
+ f = fopen("/proc/uptime", "re");
+ if (!f && IN_SET(errno, ENOENT, EPERM))
+ return;
+ assert_se(f);
+
+ r = read_line(f, LINE_MAX, &line);
+ assert_se(r >= 0);
+ if (r == 0)
+ assert_se(line && isempty(line));
+ else
+ assert_se((size_t) r == strlen(line) + 1);
+ assert_se(read_line(f, LINE_MAX, NULL) == 0);
+}
+
+TEST(read_line4) {
+ static const struct {
+ size_t length;
+ const char *string;
+ } eof_endings[] = {
+ /* Each of these will be followed by EOF and should generate the one same single string */
+ { 3, "foo" },
+ { 4, "foo\n" },
+ { 4, "foo\r" },
+ { 4, "foo\0" },
+ { 5, "foo\n\0" },
+ { 5, "foo\r\0" },
+ { 5, "foo\r\n" },
+ { 5, "foo\n\r" },
+ { 6, "foo\r\n\0" },
+ { 6, "foo\n\r\0" },
+ };
+
+ int r;
+
+ for (size_t i = 0; i < ELEMENTSOF(eof_endings); i++) {
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *s = NULL;
+
+ assert_se(f = fmemopen_unlocked((void*) eof_endings[i].string, eof_endings[i].length, "r"));
+
+ r = read_line(f, SIZE_MAX, &s);
+ assert_se((size_t) r == eof_endings[i].length);
+ assert_se(streq_ptr(s, "foo"));
+
+ assert_se(read_line(f, SIZE_MAX, NULL) == 0); /* Ensure we hit EOF */
+ }
+}
+
+TEST(read_nul_string) {
+ static const char test[] = "string nr. 1\0"
+ "string nr. 2\n\0"
+ "\377empty string follows\0"
+ "\0"
+ "final string\n is empty\0"
+ "\0";
+
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *s = NULL;
+
+ assert_se(f = fmemopen_unlocked((void*) test, sizeof(test)-1, "r"));
+
+ assert_se(read_nul_string(f, LONG_LINE_MAX, &s) == 13 && streq_ptr(s, "string nr. 1"));
+ s = mfree(s);
+
+ assert_se(read_nul_string(f, LONG_LINE_MAX, &s) == 14 && streq_ptr(s, "string nr. 2\n"));
+ s = mfree(s);
+
+ assert_se(read_nul_string(f, LONG_LINE_MAX, &s) == 22 && streq_ptr(s, "\377empty string follows"));
+ s = mfree(s);
+
+ assert_se(read_nul_string(f, LONG_LINE_MAX, &s) == 1 && streq_ptr(s, ""));
+ s = mfree(s);
+
+ assert_se(read_nul_string(f, LONG_LINE_MAX, &s) == 23 && streq_ptr(s, "final string\n is empty"));
+ s = mfree(s);
+
+ assert_se(read_nul_string(f, LONG_LINE_MAX, &s) == 1 && streq_ptr(s, ""));
+ s = mfree(s);
+
+ assert_se(read_nul_string(f, LONG_LINE_MAX, &s) == 0 && streq_ptr(s, ""));
+}
+
+TEST(read_full_file_socket) {
+ _cleanup_(rm_rf_physical_and_freep) char *z = NULL;
+ _cleanup_close_ int listener = -1;
+ _cleanup_free_ char *data = NULL, *clientname = NULL;
+ union sockaddr_union sa;
+ const char *j, *jj;
+ size_t size;
+ pid_t pid;
+ int r;
+
+ listener = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0);
+ assert_se(listener >= 0);
+
+ assert_se(mkdtemp_malloc(NULL, &z) >= 0);
+ j = strjoina(z, "/socket");
+
+ assert_se(sockaddr_un_set_path(&sa.un, j) >= 0);
+
+ assert_se(bind(listener, &sa.sa, SOCKADDR_UN_LEN(sa.un)) >= 0);
+ assert_se(listen(listener, 1) >= 0);
+
+ /* Make sure the socket doesn't fit into a struct sockaddr_un, but we can still access it */
+ jj = strjoina(z, "/a_very_long_patha_very_long_patha_very_long_patha_very_long_patha_very_long_patha_very_long_patha_very_long_patha_very_long_path");
+ assert_se(strlen(jj) > sizeof_field(struct sockaddr_un, sun_path));
+ assert_se(rename(j, jj) >= 0);
+
+ /* Bind the *client* socket to some randomized name, to verify that this works correctly. */
+ assert_se(asprintf(&clientname, "@%" PRIx64 "/test-bindname", random_u64()) >= 0);
+
+ r = safe_fork("(server)", FORK_DEATHSIG|FORK_LOG, &pid);
+ assert_se(r >= 0);
+ if (r == 0) {
+ union sockaddr_union peer = {};
+ socklen_t peerlen = sizeof(peer);
+ _cleanup_close_ int rfd = -1;
+ /* child */
+
+ rfd = accept4(listener, NULL, 0, SOCK_CLOEXEC);
+ assert_se(rfd >= 0);
+
+ assert_se(getpeername(rfd, &peer.sa, &peerlen) >= 0);
+
+ assert_se(peer.un.sun_family == AF_UNIX);
+ assert_se(peerlen > offsetof(struct sockaddr_un, sun_path));
+ assert_se(peer.un.sun_path[0] == 0);
+ assert_se(streq(peer.un.sun_path + 1, clientname + 1));
+
+#define TEST_STR "This is a test\nreally."
+
+ assert_se(write(rfd, TEST_STR, strlen(TEST_STR)) == strlen(TEST_STR));
+ _exit(EXIT_SUCCESS);
+ }
+
+ assert_se(read_full_file_full(AT_FDCWD, jj, UINT64_MAX, SIZE_MAX, 0, NULL, &data, &size) == -ENXIO);
+ assert_se(read_full_file_full(AT_FDCWD, jj, UINT64_MAX, SIZE_MAX, READ_FULL_FILE_CONNECT_SOCKET, clientname, &data, &size) >= 0);
+ assert_se(size == strlen(TEST_STR));
+ assert_se(streq(data, TEST_STR));
+
+ assert_se(wait_for_terminate_and_check("(server)", pid, WAIT_LOG) >= 0);
+#undef TEST_STR
+}
+
+TEST(read_full_file_offset_size) {
+ _cleanup_fclose_ FILE *f = NULL;
+ _cleanup_(unlink_and_freep) char *fn = NULL;
+ _cleanup_free_ char *rbuf = NULL;
+ size_t rbuf_size;
+ uint8_t buf[4711];
+
+ random_bytes(buf, sizeof(buf));
+
+ assert_se(tempfn_random_child(NULL, NULL, &fn) >= 0);
+ assert_se(f = fopen(fn, "we"));
+ assert_se(fwrite(buf, 1, sizeof(buf), f) == sizeof(buf));
+ assert_se(fflush_and_check(f) >= 0);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, UINT64_MAX, SIZE_MAX, 0, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == sizeof(buf));
+ assert_se(memcmp(buf, rbuf, rbuf_size) == 0);
+ rbuf = mfree(rbuf);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, UINT64_MAX, 128, 0, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == 128);
+ assert_se(memcmp(buf, rbuf, rbuf_size) == 0);
+ rbuf = mfree(rbuf);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, UINT64_MAX, 128, READ_FULL_FILE_FAIL_WHEN_LARGER, NULL, &rbuf, &rbuf_size) == -E2BIG);
+ assert_se(read_full_file_full(AT_FDCWD, fn, UINT64_MAX, sizeof(buf)-1, READ_FULL_FILE_FAIL_WHEN_LARGER, NULL, &rbuf, &rbuf_size) == -E2BIG);
+ assert_se(read_full_file_full(AT_FDCWD, fn, UINT64_MAX, sizeof(buf), READ_FULL_FILE_FAIL_WHEN_LARGER, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == sizeof(buf));
+ assert_se(memcmp(buf, rbuf, rbuf_size) == 0);
+ rbuf = mfree(rbuf);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, 47, 128, READ_FULL_FILE_FAIL_WHEN_LARGER, NULL, &rbuf, &rbuf_size) == -E2BIG);
+ assert_se(read_full_file_full(AT_FDCWD, fn, 47, sizeof(buf)-47-1, READ_FULL_FILE_FAIL_WHEN_LARGER, NULL, &rbuf, &rbuf_size) == -E2BIG);
+ assert_se(read_full_file_full(AT_FDCWD, fn, 47, sizeof(buf)-47, READ_FULL_FILE_FAIL_WHEN_LARGER, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == sizeof(buf)-47);
+ assert_se(memcmp(buf+47, rbuf, rbuf_size) == 0);
+ rbuf = mfree(rbuf);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, UINT64_MAX, sizeof(buf)+1, READ_FULL_FILE_FAIL_WHEN_LARGER, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == sizeof(buf));
+ assert_se(memcmp(buf, rbuf, rbuf_size) == 0);
+ rbuf = mfree(rbuf);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, 1234, SIZE_MAX, 0, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == sizeof(buf) - 1234);
+ assert_se(memcmp(buf + 1234, rbuf, rbuf_size) == 0);
+ rbuf = mfree(rbuf);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, 2345, 777, 0, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == 777);
+ assert_se(memcmp(buf + 2345, rbuf, rbuf_size) == 0);
+ rbuf = mfree(rbuf);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, 4700, 20, 0, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == 11);
+ assert_se(memcmp(buf + 4700, rbuf, rbuf_size) == 0);
+ rbuf = mfree(rbuf);
+
+ assert_se(read_full_file_full(AT_FDCWD, fn, 10000, 99, 0, NULL, &rbuf, &rbuf_size) >= 0);
+ assert_se(rbuf_size == 0);
+ rbuf = mfree(rbuf);
+}
+
+static void test_read_virtual_file_one(size_t max_size) {
+ int r;
+
+ log_info("/* %s (max_size=%zu) */", __func__, max_size);
+
+ FOREACH_STRING(filename,
+ "/proc/1/cmdline",
+ "/etc/nsswitch.conf",
+ "/sys/kernel/uevent_seqnum",
+ "/proc/kcore",
+ "/proc/kallsyms",
+ "/proc/self/exe",
+ "/proc/self/pagemap") {
+
+ _cleanup_free_ char *buf = NULL;
+ size_t size = 0;
+
+ r = read_virtual_file(filename, max_size, &buf, &size);
+ if (r < 0) {
+ log_info_errno(r, "read_virtual_file(\"%s\", %zu): %m", filename, max_size);
+ assert_se(ERRNO_IS_PRIVILEGE(r) || /* /proc/kcore is not accessible to unpriv */
+ IN_SET(r,
+ -ENOENT, /* Some of the files might be absent */
+ -EINVAL, /* too small reads from /proc/self/pagemap trigger EINVAL */
+ -EFBIG)); /* /proc/kcore and /proc/self/pagemap should be too large */
+ } else
+ log_info("read_virtual_file(\"%s\", %zu): %s (%zu bytes)", filename, max_size, r ? "non-truncated" : "truncated", size);
+ }
+}
+
+TEST(test_read_virtual_file) {
+ test_read_virtual_file_one(0);
+ test_read_virtual_file_one(1);
+ test_read_virtual_file_one(2);
+ test_read_virtual_file_one(20);
+ test_read_virtual_file_one(4096);
+ test_read_virtual_file_one(4097);
+ test_read_virtual_file_one(SIZE_MAX);
+}
+
+DEFINE_TEST_MAIN(LOG_DEBUG);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 17:37:05 +0000