diff options
Diffstat (limited to 'src/test/test-socket-bind.c')
| -rw-r--r-- | src/test/test-socket-bind.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/src/test/test-socket-bind.c b/src/test/test-socket-bind.c new file mode 100644 index 0000000..84a8978 --- /dev/null +++ b/src/test/test-socket-bind.c @@ -0,0 +1,149 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "bpf-socket-bind.h" +#include "load-fragment.h" +#include "manager.h" +#include "process-util.h" +#include "rlimit-util.h" +#include "rm-rf.h" +#include "service.h" +#include "strv.h" +#include "tests.h" +#include "unit.h" +#include "virt.h" + +static int find_netcat_executable(char **ret_path) { + char **candidates = STRV_MAKE("ncat", "nc", "netcat"); + int r = 0; + + STRV_FOREACH(c, candidates) { + r = find_executable(*c, ret_path); + if (r == 0) + break; + } + + return r; +} + +static int test_socket_bind( + Manager *m, + const char *unit_name, + const char *netcat_path, + const char *port, + char **allow_rules, + char **deny_rules) { + _cleanup_free_ char *exec_start = NULL; + _cleanup_(unit_freep) Unit *u = NULL; + CGroupContext *cc = NULL; + int cld_code, r; + + assert_se(u = unit_new(m, sizeof(Service))); + assert_se(unit_add_name(u, unit_name) == 0); + assert_se(cc = unit_get_cgroup_context(u)); + + STRV_FOREACH(rule, allow_rules) { + r = config_parse_cgroup_socket_bind( + u->id, "filename", 1, "Service", 1, "SocketBindAllow", 0, + *rule, &cc->socket_bind_allow, u); + if (r < 0) + return log_unit_error_errno(u, r, "Failed to parse SocketBindAllow: %m"); + } + + fprintf(stderr, "SocketBindAllow: "); + cgroup_context_dump_socket_bind_items(cc->socket_bind_allow, stderr); + fputc('\n', stderr); + + STRV_FOREACH(rule, deny_rules) { + r = config_parse_cgroup_socket_bind( + u->id, "filename", 1, "Service", 1, "SocketBindDeny", 0, + *rule, &cc->socket_bind_deny, u); + if (r < 0) + return log_unit_error_errno(u, r, "Failed to parse SocketBindDeny: %m"); + } + + fprintf(stderr, "SocketBindDeny: "); + cgroup_context_dump_socket_bind_items(cc->socket_bind_deny, stderr); + fputc('\n', stderr); + + exec_start = strjoin("-timeout --preserve-status -sSIGTERM 1s ", netcat_path, " -l ", port, " -vv"); + assert_se(exec_start != NULL); + + r = config_parse_exec(u->id, "filename", 1, "Service", 1, "ExecStart", + SERVICE_EXEC_START, exec_start, SERVICE(u)->exec_command, u); + if (r < 0) + return log_error_errno(r, "Failed to parse ExecStart"); + + SERVICE(u)->type = SERVICE_ONESHOT; + u->load_state = UNIT_LOADED; + + r = unit_start(u, NULL); + if (r < 0) + return log_error_errno(r, "Unit start failed %m"); + + while (!IN_SET(SERVICE(u)->state, SERVICE_DEAD, SERVICE_FAILED)) { + r = sd_event_run(m->event, UINT64_MAX); + if (r < 0) + return log_error_errno(errno, "Event run failed %m"); + } + + cld_code = SERVICE(u)->exec_command[SERVICE_EXEC_START]->exec_status.code; + if (cld_code != CLD_EXITED) + return log_error_errno(SYNTHETIC_ERRNO(EBUSY), "ExecStart didn't exited, code='%s'", sigchld_code_to_string(cld_code)); + + if (SERVICE(u)->state != SERVICE_DEAD) + return log_error_errno(SYNTHETIC_ERRNO(EBUSY), "Service is not dead"); + + return 0; +} + +int main(int argc, char *argv[]) { + _cleanup_free_ char *unit_dir = NULL, *netcat_path = NULL; + _cleanup_(rm_rf_physical_and_freep) char *runtime_dir = NULL; + _cleanup_(manager_freep) Manager *m = NULL; + struct rlimit rl; + int r; + + test_setup_logging(LOG_DEBUG); + + if (detect_container() > 0) + return log_tests_skipped("test-socket-bind fails inside LXC and Docker containers: https://github.com/systemd/systemd/issues/9666"); + + assert_se(getrlimit(RLIMIT_MEMLOCK, &rl) >= 0); + rl.rlim_cur = rl.rlim_max = MAX(rl.rlim_max, CAN_MEMLOCK_SIZE); + (void) setrlimit_closest(RLIMIT_MEMLOCK, &rl); + + if (!can_memlock()) + return log_tests_skipped("Can't use mlock()"); + + r = bpf_socket_bind_supported(); + if (r <= 0) + return log_tests_skipped("socket-bind is not supported"); + + if (find_netcat_executable(&netcat_path) != 0) + return log_tests_skipped("Cannot find netcat executable"); + + r = enter_cgroup_subroot(NULL); + if (r == -ENOMEDIUM) + return log_tests_skipped("cgroupfs not available"); + + assert_se(get_testdata_dir("units", &unit_dir) >= 0); + assert_se(set_unit_path(unit_dir) >= 0); + assert_se(runtime_dir = setup_fake_runtime_dir()); + + assert_se(manager_new(RUNTIME_SCOPE_USER, MANAGER_TEST_RUN_BASIC, &m) >= 0); + assert_se(manager_startup(m, NULL, NULL, NULL) >= 0); + + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "2000", STRV_MAKE("2000"), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "2000", STRV_MAKE("ipv6:2001-2002"), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "6666", STRV_MAKE("ipv4:6666", "6667"), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "6666", STRV_MAKE("6667", "6668", ""), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "7777", STRV_MAKE_EMPTY, STRV_MAKE_EMPTY) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "8888", STRV_MAKE("any"), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "8888", STRV_MAKE("ipv6:tcp:8888-8889"), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "10000", STRV_MAKE("ipv6:udp:9999-10000"), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "6666", STRV_MAKE("ipv4:tcp:6666"), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "6666", STRV_MAKE("ipv4:udp:6666"), STRV_MAKE("any")) >= 0); + assert_se(test_socket_bind(m, "socket_bind_test.service", netcat_path, "6666", STRV_MAKE("tcp:6666"), STRV_MAKE("any")) >= 0); + + return 0; +} |