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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <elf.h>
#include "alloc-util.h"
#include "coredump-util.h"
#include "fileio.h"
#include "fd-util.h"
#include "format-util.h"
#include "macro.h"
#include "tests.h"
TEST(coredump_filter_to_from_string) {
for (CoredumpFilter i = 0; i < _COREDUMP_FILTER_MAX; i++) {
const char *n;
assert_se(n = coredump_filter_to_string(i));
log_info("0x%x\t%s", 1u << i, n);
assert_se(coredump_filter_from_string(n) == i);
uint64_t f;
assert_se(coredump_filter_mask_from_string(n, &f) == 0);
assert_se(f == 1u << i);
}
}
TEST(coredump_filter_mask_from_string) {
uint64_t f;
assert_se(coredump_filter_mask_from_string("default", &f) == 0);
assert_se(f == COREDUMP_FILTER_MASK_DEFAULT);
assert_se(coredump_filter_mask_from_string(" default\tdefault\tdefault ", &f) == 0);
assert_se(f == COREDUMP_FILTER_MASK_DEFAULT);
assert_se(coredump_filter_mask_from_string("defaulta", &f) < 0);
assert_se(coredump_filter_mask_from_string("default defaulta default", &f) < 0);
assert_se(coredump_filter_mask_from_string("default default defaulta", &f) < 0);
assert_se(coredump_filter_mask_from_string("private-anonymous default", &f) == 0);
assert_se(f == COREDUMP_FILTER_MASK_DEFAULT);
assert_se(coredump_filter_mask_from_string("shared-file-backed shared-dax", &f) == 0);
assert_se(f == (1 << COREDUMP_FILTER_SHARED_FILE_BACKED |
1 << COREDUMP_FILTER_SHARED_DAX));
assert_se(coredump_filter_mask_from_string("private-file-backed private-dax 0xF", &f) == 0);
assert_se(f == (1 << COREDUMP_FILTER_PRIVATE_FILE_BACKED |
1 << COREDUMP_FILTER_PRIVATE_DAX |
0xF));
assert_se(coredump_filter_mask_from_string("11", &f) == 0);
assert_se(f == 0x11);
assert_se(coredump_filter_mask_from_string("0x1101", &f) == 0);
assert_se(f == 0x1101);
assert_se(coredump_filter_mask_from_string("0", &f) == 0);
assert_se(f == 0);
assert_se(coredump_filter_mask_from_string("all", &f) == 0);
assert_se(FLAGS_SET(f, (1 << COREDUMP_FILTER_PRIVATE_ANONYMOUS |
1 << COREDUMP_FILTER_SHARED_ANONYMOUS |
1 << COREDUMP_FILTER_PRIVATE_FILE_BACKED |
1 << COREDUMP_FILTER_SHARED_FILE_BACKED |
1 << COREDUMP_FILTER_ELF_HEADERS |
1 << COREDUMP_FILTER_PRIVATE_HUGE |
1 << COREDUMP_FILTER_SHARED_HUGE |
1 << COREDUMP_FILTER_PRIVATE_DAX |
1 << COREDUMP_FILTER_SHARED_DAX)));
}
static void test_parse_auxv_two(
uint8_t elf_class,
size_t offset,
const char *data,
size_t data_size,
int expect_at_secure,
uid_t expect_uid,
uid_t expect_euid,
gid_t expect_gid,
gid_t expect_egid) {
int at_secure;
uid_t uid, euid;
gid_t gid, egid;
assert_se(parse_auxv(LOG_ERR, elf_class, data, data_size,
&at_secure, &uid, &euid, &gid, &egid) == 0);
log_debug("[offset=%zu] at_secure=%d, uid="UID_FMT", euid="UID_FMT", gid="GID_FMT", egid="GID_FMT,
offset,
at_secure, uid, euid, gid, egid);
assert_se(uid == expect_uid);
assert_se(euid == expect_euid);
assert_se(gid == expect_gid);
assert_se(egid == expect_egid);
}
static void test_parse_auxv_one(
uint8_t elf_class,
int dir_fd,
const char *filename,
int expect_at_secure,
uid_t expect_uid,
uid_t expect_euid,
gid_t expect_gid,
gid_t expect_egid) {
_cleanup_free_ char *buf;
const char *data;
size_t data_size;
log_info("Parsing %s…", filename);
assert_se(read_full_file_at(dir_fd, filename, &buf, &data_size) >= 0);
for (size_t offset = 0; offset < 8; offset++) {
_cleanup_free_ char *buf2 = NULL;
if (offset == 0)
data = buf;
else {
assert_se(buf2 = malloc(offset + data_size));
memcpy(buf2 + offset, buf, data_size);
data = buf2 + offset;
}
test_parse_auxv_two(elf_class, offset, data, data_size,
expect_at_secure, expect_uid, expect_euid, expect_gid, expect_egid);
}
}
TEST(test_parse_auxv) {
_cleanup_free_ char *dir = NULL;
_cleanup_close_ int dir_fd = -EBADF;
assert_se(get_testdata_dir("auxv", &dir) >= 0);
dir_fd = open(dir, O_RDONLY | O_CLOEXEC | O_DIRECTORY | O_PATH);
assert_se(dir_fd >= 0);
if (__BYTE_ORDER == __LITTLE_ENDIAN) {
test_parse_auxv_one(ELFCLASS32, dir_fd, "resolved.arm32", 0, 193, 193, 193, 193);
test_parse_auxv_one(ELFCLASS64, dir_fd, "bash.riscv64", 0, 1001, 1001, 1001, 1001);
test_parse_auxv_one(ELFCLASS32, dir_fd, "sleep.i686", 0, 1000, 1000, 1000, 1000);
/* after chgrp and chmod g+s */
test_parse_auxv_one(ELFCLASS32, dir_fd, "sleep32.i686", 1, 1000, 1000, 1000, 10);
test_parse_auxv_one(ELFCLASS64, dir_fd, "sleep64.amd64", 1, 1000, 1000, 1000, 10);
test_parse_auxv_one(ELFCLASS64, dir_fd, "sudo.aarch64", 1, 1494200408, 0, 1494200408, 1494200408);
test_parse_auxv_one(ELFCLASS64, dir_fd, "sudo.amd64", 1, 1000, 0, 1000, 1000);
/* Those run unprivileged, but start as root. */
test_parse_auxv_one(ELFCLASS64, dir_fd, "dbus-broker-launch.amd64", 0, 0, 0, 0, 0);
test_parse_auxv_one(ELFCLASS64, dir_fd, "dbus-broker-launch.aarch64", 0, 0, 0, 0, 0);
test_parse_auxv_one(ELFCLASS64, dir_fd, "polkitd.aarch64", 0, 0, 0, 0, 0);
} else {
test_parse_auxv_one(ELFCLASS64, dir_fd, "cat.s390x", 0, 3481, 3481, 3481, 3481);
}
}
DEFINE_TEST_MAIN(LOG_INFO);
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