#include <Security/Authorization.h>
#include <Security/AuthorizationTags.h>
#include <Security/AuthSession.h>
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/event.h>
#include <sys/stat.h>
#include <sys/ucred.h>
#include <sys/fcntl.h>
#include <sys/un.h>
#include <sys/wait.h>
#include <sys/sysctl.h>
#include <sys/sockio.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet6/nd6.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <syslog.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdbool.h>
#include <pthread.h>
#include <paths.h>
#include <pwd.h>
#include <grp.h>
#include <dlfcn.h>
#include <dirent.h>
#include "launch.h"
#include "launch_priv.h"
#include "launchd.h"
#include "bootstrap_internal.h"
#define LAUNCHD_MIN_JOB_RUN_TIME 10
#define LAUNCHD_REWARD_JOB_RUN_TIME 60
#define LAUNCHD_FAILED_EXITS_THRESHOLD 10
#define PID1LAUNCHD_CONF "/etc/launchd.conf"
#define LAUNCHD_CONF ".launchd.conf"
#define LAUNCHCTL_PATH "/bin/launchctl"
#define SECURITY_LIB "/System/Library/Frameworks/Security.framework/Versions/A/Security"
#define VOLFSDIR "/.vol"
extern char **environ;
struct jobcb {
kq_callback kqjob_callback;
TAILQ_ENTRY(jobcb) tqe;
launch_data_t ldj;
pid_t p;
int execfd;
time_t start_time;
size_t failed_exits;
int *vnodes;
size_t vnodes_cnt;
int *qdirs;
size_t qdirs_cnt;
unsigned int start_interval;
struct tm *start_cal_interval;
unsigned int checkedin:1, firstborn:1, debug:1, throttle:1, futureflags:28;
char label[0];
};
struct conncb {
kq_callback kqconn_callback;
TAILQ_ENTRY(conncb) tqe;
launch_t conn;
struct jobcb *j;
int disabled_batch:1, futureflags:31;
};
static TAILQ_HEAD(jobcbhead, jobcb) jobs = TAILQ_HEAD_INITIALIZER(jobs);
static TAILQ_HEAD(conncbhead, conncb) connections = TAILQ_HEAD_INITIALIZER(connections);
static int mainkq = 0;
static int asynckq = 0;
static int batch_disabler_count = 0;
static launch_data_t load_job(launch_data_t pload);
static launch_data_t get_jobs(const char *which);
static launch_data_t setstdio(int d, launch_data_t o);
static launch_data_t adjust_rlimits(launch_data_t in);
static void batch_job_enable(bool e, struct conncb *c);
static void do_shutdown(void);
static void listen_callback(void *, struct kevent *);
static void async_callback(void);
static void signal_callback(void *, struct kevent *);
static void fs_callback(void);
static void simple_zombie_reaper(void *, struct kevent *);
static void readcfg_callback(void *, struct kevent *);
static kq_callback kqlisten_callback = listen_callback;
static kq_callback kqasync_callback = (kq_callback)async_callback;
static kq_callback kqsignal_callback = signal_callback;
static kq_callback kqfs_callback = (kq_callback)fs_callback;
static kq_callback kqreadcfg_callback = readcfg_callback;
kq_callback kqsimple_zombie_reaper = simple_zombie_reaper;
static void job_watch(struct jobcb *j);
static void job_ignore(struct jobcb *j);
static void job_start(struct jobcb *j);
static void job_start_child(struct jobcb *j, int execfd);
static void job_setup_attributes(struct jobcb *j);
static void job_stop(struct jobcb *j);
static void job_reap(struct jobcb *j);
static void job_remove(struct jobcb *j);
static void job_set_alarm(struct jobcb *j);
static void job_callback(void *obj, struct kevent *kev);
static void job_log(struct jobcb *j, int pri, const char *msg, ...) __attribute__((format(printf, 3, 4)));
static void job_log_error(struct jobcb *j, int pri, const char *msg, ...) __attribute__((format(printf, 3, 4)));
static void job_prep_log_msg(struct jobcb *j, char *buf, const char *msg, int err);
static void ipc_open(int fd, struct jobcb *j);
static void ipc_close(struct conncb *c);
static void ipc_callback(void *, struct kevent *);
static void ipc_readmsg(launch_data_t msg, void *context);
static void ipc_readmsg2(launch_data_t data, const char *cmd, void *context);
#ifdef PID1_REAP_ADOPTED_CHILDREN
static void pid1waitpid(void);
static bool launchd_check_pid(pid_t p);
#endif
static void pid1_magic_init(bool sflag, bool vflag, bool xflag);
static void launchd_server_init(bool create_session);
static void conceive_firstborn(char *argv[]);
static void usage(FILE *where);
static int _fd(int fd);
static void loopback_setup(void);
static void workaround3048875(int argc, char *argv[]);
static void reload_launchd_config(void);
static int dir_has_files(const char *path);
static void testfd_or_openfd(int fd, const char *path, int flags);
static void setup_job_env(launch_data_t obj, const char *key, void *context);
static void unsetup_job_env(launch_data_t obj, const char *key, void *context);
static time_t cronemu(int mon, int mday, int hour, int min);
static time_t cronemu_wday(int wday, int hour, int min);
static bool cronemu_mon(struct tm *wtm, int mon, int mday, int hour, int min);
static bool cronemu_mday(struct tm *wtm, int mday, int hour, int min);
static bool cronemu_hour(struct tm *wtm, int hour, int min);
static bool cronemu_min(struct tm *wtm, int min);
static size_t total_children = 0;
static pid_t readcfg_pid = 0;
static pid_t launchd_proper_pid = 0;
static bool launchd_inited = false;
static bool shutdown_in_progress = false;
static pthread_t mach_server_loop_thread;
mach_port_t launchd_bootstrap_port = MACH_PORT_NULL;
sigset_t blocked_signals = 0;
pthread_mutex_t giant_lock = PTHREAD_MUTEX_INITIALIZER;
static char *pending_stdout = NULL;
static char *pending_stderr = NULL;
int main(int argc, char *argv[])
{
static const int sigigns[] = { SIGHUP, SIGINT, SIGPIPE, SIGALRM,
SIGTERM, SIGURG, SIGTSTP, SIGTSTP, SIGCONT,
SIGTTIN, SIGTTOU, SIGIO, SIGXCPU, SIGXFSZ, SIGVTALRM, SIGPROF,
SIGWINCH, SIGINFO, SIGUSR1, SIGUSR2 };
struct kevent kev;
size_t i;
bool sflag = false, xflag = false, vflag = false, dflag = false;
int ch;
__log_liblaunch_bug = _log_launchd_bug;
if (getpid() == 1)
workaround3048875(argc, argv);
setegid(getgid());
seteuid(getuid());
testfd_or_openfd(STDIN_FILENO, _PATH_DEVNULL, O_RDONLY);
testfd_or_openfd(STDOUT_FILENO, _PATH_DEVNULL, O_WRONLY);
testfd_or_openfd(STDERR_FILENO, _PATH_DEVNULL, O_WRONLY);
openlog(getprogname(), LOG_CONS|(getpid() != 1 ? LOG_PID|LOG_PERROR : 0), LOG_LAUNCHD);
setlogmask(LOG_UPTO(LOG_NOTICE));
while ((ch = getopt(argc, argv, "dhsvx")) != -1) {
switch (ch) {
case 'd': dflag = true; break;
case 's': sflag = true; break;
case 'x': xflag = true; break;
case 'v': vflag = true; break;
case 'h': usage(stdout); break;
default:
syslog(LOG_WARNING, "ignoring unknown arguments");
usage(stderr);
break;
}
}
argc -= optind;
argv += optind;
if (dflag) {
assumes(daemon(0, 0) != -1);
}
if (!assumes((mainkq = kqueue()) != -1)) {
abort();
}
if (!assumes((asynckq = kqueue()) != -1)) {
abort();
}
if (!assumes(kevent_mod(asynckq, EVFILT_READ, EV_ADD, 0, 0, &kqasync_callback) != -1)) {
abort();
}
sigemptyset(&blocked_signals);
for (i = 0; i < (sizeof(sigigns) / sizeof(int)); i++) {
assumes(kevent_mod(sigigns[i], EVFILT_SIGNAL, EV_ADD, 0, 0, &kqsignal_callback) != -1);
sigaddset(&blocked_signals, sigigns[i]);
signal(sigigns[i], SIG_IGN);
}
assumes(kevent_mod(SIGCHLD, EVFILT_SIGNAL, EV_ADD, 0, 0, &kqsignal_callback) != -1);
assumes(pthread_mutex_lock(&giant_lock) == 0);
if (getpid() == 1) {
pid1_magic_init(sflag, vflag, xflag);
} else {
launchd_bootstrap_port = bootstrap_port;
launchd_server_init(argv[0] ? true : false);
}
assumes(kevent_mod(0, EVFILT_FS, EV_ADD, 0, 0, &kqfs_callback) != -1);
if (argv[0])
conceive_firstborn(argv);
reload_launchd_config();
if (argv[0])
job_start(TAILQ_FIRST(&jobs));
for (;;) {
static struct timespec timeout = { 30, 0 };
struct timespec *timeoutp = NULL;
int kev_r;
if (getpid() == 1) {
if (readcfg_pid == 0)
init_pre_kevent();
} else {
if (TAILQ_EMPTY(&jobs)) {
timeoutp = &timeout;
} else if (shutdown_in_progress && total_children == 0) {
exit(EXIT_SUCCESS);
}
}
assumes(pthread_mutex_unlock(&giant_lock) == 0);
kev_r = kevent(mainkq, NULL, 0, &kev, 1, timeoutp);
assumes(pthread_mutex_lock(&giant_lock) == 0);
switch (kev_r) {
case -1:
syslog(LOG_DEBUG, "kevent(): %m");
break;
case 1:
(*((kq_callback *)kev.udata))(kev.udata, &kev);
break;
case 0:
if (timeoutp)
exit(EXIT_SUCCESS);
else
syslog(LOG_DEBUG, "kevent(): spurious return with infinite timeout");
break;
default:
syslog(LOG_DEBUG, "unexpected: kevent() returned something != 0, -1 or 1");
break;
}
}
}
static void pid1_magic_init(bool sflag, bool vflag, bool xflag)
{
pthread_attr_t attr;
int memmib[2] = { CTL_HW, HW_MEMSIZE };
int mvnmib[2] = { CTL_KERN, KERN_MAXVNODES };
int hnmib[2] = { CTL_KERN, KERN_HOSTNAME };
#ifdef KERN_TFP
int tfp_r_mib[3] = { CTL_KERN, KERN_TFP, KERN_TFP_READ_GROUP };
int tfp_rw_mib[3] = { CTL_KERN, KERN_TFP, KERN_TFP_RW_GROUP };
gid_t tfp_r_gid = 0;
gid_t tfp_rw_gid = 0;
struct group *tfp_gr;
#endif
uint64_t mem = 0;
uint32_t mvn;
size_t memsz = sizeof(mem);
#ifdef KERN_TFP
if ((tfp_gr = getgrnam("procview"))) {
tfp_r_gid = tfp_gr->gr_gid;
assumes(sysctl(tfp_r_mib, 3, NULL, NULL, &tfp_r_gid, sizeof(tfp_r_gid)) != -1);
}
if ((tfp_gr = getgrnam("procmod"))) {
tfp_rw_gid = tfp_gr->gr_gid;
assumes(sysctl(tfp_rw_mib, 3, NULL, NULL, &tfp_rw_gid, sizeof(tfp_rw_gid)) != -1);
}
#endif
setpriority(PRIO_PROCESS, 0, -1);
assumes(setsid() != -1);
assumes(chdir("/") != -1);
if (assumes(sysctl(memmib, 2, &mem, &memsz, NULL, 0) != -1)) {
if (memsz == 4)
mem = *(uint32_t *)&mem;
mvn = mem / (64 * 1024) + 1024;
assumes(sysctl(mvnmib, 2, NULL, NULL, &mvn, sizeof(mvn)) != -1);
}
assumes(sysctl(hnmib, 2, NULL, NULL, "localhost", sizeof("localhost")) != -1);
assumes(setlogin("root") != -1);
loopback_setup();
assumes(mount("fdesc", "/dev", MNT_UNION, NULL) != -1);
setenv("PATH", _PATH_STDPATH, 1);
launchd_bootstrap_port = mach_init_init();
assumes(task_set_bootstrap_port(mach_task_self(), launchd_bootstrap_port) == KERN_SUCCESS);
bootstrap_port = MACH_PORT_NULL;
assumes(pthread_attr_init(&attr) == 0);
assumes(pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) == 0);
if (!assumes(pthread_create(&mach_server_loop_thread, &attr, mach_server_loop, NULL) == 0)) {
abort();
}
pthread_attr_destroy(&attr);
init_boot(sflag, vflag, xflag);
}
#ifdef PID1_REAP_ADOPTED_CHILDREN
static bool launchd_check_pid(pid_t p)
{
struct kevent kev;
struct jobcb *j;
TAILQ_FOREACH(j, &jobs, tqe) {
if (j->p == p) {
EV_SET(&kev, p, EVFILT_PROC, 0, 0, 0, j);
j->kqjob_callback(j, &kev);
return true;
}
}
if (p == readcfg_pid) {
readcfg_callback(NULL, NULL);
return true;
}
return false;
}
#endif
static char *sockdir = NULL;
static char *sockpath = NULL;
static void launchd_clean_up(void)
{
if (launchd_proper_pid != getpid())
return;
seteuid(0);
setegid(0);
if (assumes(unlink(sockpath) != -1))
assumes(rmdir(sockdir) != -1);
setegid(getgid());
seteuid(getuid());
}
static void launchd_server_init(bool create_session)
{
struct sockaddr_un sun;
mode_t oldmask;
int r, fd = -1, ourdirfd = -1;
char ourdir[1024];
memset(&sun, 0, sizeof(sun));
sun.sun_family = AF_UNIX;
if (create_session) {
snprintf(ourdir, sizeof(ourdir), "%s/%u.%u", LAUNCHD_SOCK_PREFIX, getuid(), getpid());
snprintf(sun.sun_path, sizeof(sun.sun_path), "%s/%u.%u/sock", LAUNCHD_SOCK_PREFIX, getuid(), getpid());
setenv(LAUNCHD_SOCKET_ENV, sun.sun_path, 1);
} else {
snprintf(ourdir, sizeof(ourdir), "%s/%u", LAUNCHD_SOCK_PREFIX, getuid());
snprintf(sun.sun_path, sizeof(sun.sun_path), "%s/%u/sock", LAUNCHD_SOCK_PREFIX, getuid());
}
seteuid(0);
setegid(0);
if (mkdir(LAUNCHD_SOCK_PREFIX, S_IRWXU|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH) == -1) {
if (errno == EROFS) {
goto out_bad;
} else if (errno == EEXIST) {
struct stat sb;
stat(LAUNCHD_SOCK_PREFIX, &sb);
if (!S_ISDIR(sb.st_mode)) {
errno = EEXIST;
syslog(LOG_ERR, "mkdir(\"%s\"): %m", LAUNCHD_SOCK_PREFIX);
goto out_bad;
}
} else {
syslog(LOG_ERR, "mkdir(\"%s\"): %m", LAUNCHD_SOCK_PREFIX);
goto out_bad;
}
}
unlink(ourdir);
if (mkdir(ourdir, S_IRWXU) == -1) {
if (errno == EROFS) {
goto out_bad;
} else if (errno == EEXIST) {
struct stat sb;
stat(ourdir, &sb);
if (!S_ISDIR(sb.st_mode)) {
errno = EEXIST;
syslog(LOG_ERR, "mkdir(\"%s\"): %m", LAUNCHD_SOCK_PREFIX);
goto out_bad;
}
} else {
syslog(LOG_ERR, "mkdir(\"%s\"): %m", ourdir);
goto out_bad;
}
}
assumes(chown(ourdir, getuid(), getgid()) != -1);
setegid(getgid());
seteuid(getuid());
if (!assumes((ourdirfd = _fd(open(ourdir, O_RDONLY))) != -1)) {
goto out_bad;
}
if (flock(ourdirfd, LOCK_EX|LOCK_NB) == -1) {
if (errno == EWOULDBLOCK) {
exit(EXIT_SUCCESS);
} else {
syslog(LOG_ERR, "flock(\"%s\"): %m", ourdir);
goto out_bad;
}
}
if (unlink(sun.sun_path) == -1 && errno != ENOENT) {
if (errno != EROFS)
syslog(LOG_ERR, "unlink(\"thesocket\"): %m");
goto out_bad;
}
if (!assumes((fd = _fd(socket(AF_UNIX, SOCK_STREAM, 0))) != -1)) {
goto out_bad;
}
oldmask = umask(077);
r = bind(fd, (struct sockaddr *)&sun, sizeof(sun));
umask(oldmask);
if (r == -1) {
if (errno != EROFS)
syslog(LOG_ERR, "bind(\"thesocket\"): %m");
goto out_bad;
}
if (!assumes(listen(fd, SOMAXCONN) != -1)) {
goto out_bad;
}
if (!assumes(kevent_mod(fd, EVFILT_READ, EV_ADD, 0, 0, &kqlisten_callback) != -1)) {
goto out_bad;
}
launchd_inited = true;
sockdir = strdup(ourdir);
sockpath = strdup(sun.sun_path);
launchd_proper_pid = getpid();
atexit(launchd_clean_up);
out_bad:
setegid(getgid());
seteuid(getuid());
if (!launchd_inited) {
if (fd != -1)
assumes(close(fd) != -1);
if (ourdirfd != -1)
assumes(close(ourdirfd) != -1);
}
}
static long long job_get_integer(launch_data_t j, const char *key)
{
launch_data_t t;
if (!assumes(j != NULL))
return -1;
if ((t = launch_data_dict_lookup(j, key))) {
return launch_data_get_integer(t);
} else {
return 0;
}
}
static const char *job_get_string(launch_data_t j, const char *key)
{
launch_data_t t;
if (!assumes(j != NULL))
return NULL;
if ((t = launch_data_dict_lookup(j, key))) {
return launch_data_get_string(t);
} else {
return NULL;
}
}
static const char *job_get_file2exec(launch_data_t j)
{
launch_data_t tmpi, tmp;
if (!assumes(j != NULL))
return NULL;
if ((tmp = launch_data_dict_lookup(j, LAUNCH_JOBKEY_PROGRAM))) {
return launch_data_get_string(tmp);
} else {
tmp = launch_data_dict_lookup(j, LAUNCH_JOBKEY_PROGRAMARGUMENTS);
if (assumes(tmp != NULL)) {
tmpi = launch_data_array_get_index(tmp, 0);
if (assumes(tmpi != NULL))
return launch_data_get_string(tmpi);
}
return NULL;
}
}
static bool job_get_bool(launch_data_t j, const char *key)
{
launch_data_t t;
if (!assumes(j != NULL))
return false;
if ((t = launch_data_dict_lookup(j, key))) {
return launch_data_get_bool(t);
} else {
return false;
}
}
static void ipc_open(int fd, struct jobcb *j)
{
struct conncb *c = calloc(1, sizeof(struct conncb));
if (!assumes(c != NULL))
return;
assumes(fcntl(fd, F_SETFL, O_NONBLOCK) != -1);
c->kqconn_callback = ipc_callback;
c->conn = launchd_fdopen(fd);
c->j = j;
TAILQ_INSERT_TAIL(&connections, c, tqe);
assumes(kevent_mod(fd, EVFILT_READ, EV_ADD, 0, 0, &c->kqconn_callback) != -1);
}
static void simple_zombie_reaper(void *obj __attribute__((unused)), struct kevent *kev)
{
assumes(waitpid(kev->ident, NULL, 0) != -1);
}
static void listen_callback(void *obj __attribute__((unused)), struct kevent *kev)
{
struct sockaddr_un sun;
socklen_t sl = sizeof(sun);
int cfd;
if (assumes((cfd = _fd(accept(kev->ident, (struct sockaddr *)&sun, &sl))) != -1)) {
ipc_open(cfd, NULL);
}
}
static void ipc_callback(void *obj, struct kevent *kev)
{
struct conncb *c = obj;
int r;
if (kev->filter == EVFILT_READ) {
if (launchd_msg_recv(c->conn, ipc_readmsg, c) == -1 && errno != EAGAIN) {
if (errno != ECONNRESET)
syslog(LOG_DEBUG, "%s(): recv: %m", __func__);
ipc_close(c);
}
} else if (kev->filter == EVFILT_WRITE) {
r = launchd_msg_send(c->conn, NULL);
if (r == -1) {
if (errno != EAGAIN) {
syslog(LOG_DEBUG, "%s(): send: %m", __func__);
ipc_close(c);
}
} else if (r == 0) {
assumes(kevent_mod(launchd_getfd(c->conn), EVFILT_WRITE, EV_DELETE, 0, 0, NULL) != -1);
}
} else {
syslog(LOG_DEBUG, "%s(): unknown filter type!", __func__);
ipc_close(c);
}
}
static void set_user_env(launch_data_t obj, const char *key, void *context __attribute__((unused)))
{
setenv(key, launch_data_get_string(obj), 1);
}
static void launch_data_close_fds(launch_data_t o)
{
size_t i;
switch (launch_data_get_type(o)) {
case LAUNCH_DATA_DICTIONARY:
launch_data_dict_iterate(o, (void (*)(launch_data_t, const char *, void *))launch_data_close_fds, NULL);
break;
case LAUNCH_DATA_ARRAY:
for (i = 0; i < launch_data_array_get_count(o); i++)
launch_data_close_fds(launch_data_array_get_index(o, i));
break;
case LAUNCH_DATA_FD:
if (launch_data_get_fd(o) != -1)
assumes(close(launch_data_get_fd(o)) != -1);
break;
default:
break;
}
}
static void launch_data_revoke_fds(launch_data_t o)
{
size_t i;
switch (launch_data_get_type(o)) {
case LAUNCH_DATA_DICTIONARY:
launch_data_dict_iterate(o, (void (*)(launch_data_t, const char *, void *))launch_data_revoke_fds, NULL);
break;
case LAUNCH_DATA_ARRAY:
for (i = 0; i < launch_data_array_get_count(o); i++)
launch_data_revoke_fds(launch_data_array_get_index(o, i));
break;
case LAUNCH_DATA_FD:
launch_data_set_fd(o, -1);
break;
default:
break;
}
}
static void job_ignore_fds(launch_data_t o, const char *key __attribute__((unused)), void *cookie)
{
struct jobcb *j = cookie;
size_t i;
int fd;
switch (launch_data_get_type(o)) {
case LAUNCH_DATA_DICTIONARY:
launch_data_dict_iterate(o, job_ignore_fds, cookie);
break;
case LAUNCH_DATA_ARRAY:
for (i = 0; i < launch_data_array_get_count(o); i++)
job_ignore_fds(launch_data_array_get_index(o, i), NULL, cookie);
break;
case LAUNCH_DATA_FD:
fd = launch_data_get_fd(o);
if (-1 != fd) {
job_log(j, LOG_DEBUG, "Ignoring FD: %d", fd);
assumes(kevent_mod(fd, EVFILT_READ, EV_DELETE, 0, 0, NULL) != -1);
}
break;
default:
break;
}
}
static void job_ignore(struct jobcb *j)
{
launch_data_t j_sockets = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_SOCKETS);
size_t i;
if (j_sockets)
job_ignore_fds(j_sockets, NULL, j);
for (i = 0; i < j->vnodes_cnt; i++) {
assumes(kevent_mod(j->vnodes[i], EVFILT_VNODE, EV_DELETE, 0, 0, NULL) != -1);
}
for (i = 0; i < j->qdirs_cnt; i++) {
assumes(kevent_mod(j->qdirs[i], EVFILT_VNODE, EV_DELETE, 0, 0, NULL) != -1);
}
}
static void job_watch_fds(launch_data_t o, const char *key __attribute__((unused)), void *cookie)
{
struct jobcb *j = cookie;
size_t i;
int fd;
switch (launch_data_get_type(o)) {
case LAUNCH_DATA_DICTIONARY:
launch_data_dict_iterate(o, job_watch_fds, cookie);
break;
case LAUNCH_DATA_ARRAY:
for (i = 0; i < launch_data_array_get_count(o); i++)
job_watch_fds(launch_data_array_get_index(o, i), NULL, cookie);
break;
case LAUNCH_DATA_FD:
fd = launch_data_get_fd(o);
if (-1 != fd) {
job_log(j, LOG_DEBUG, "Watching FD: %d", fd);
assumes(kevent_mod(fd, EVFILT_READ, EV_ADD, 0, 0, cookie) != -1);
}
break;
default:
break;
}
}
static void job_watch(struct jobcb *j)
{
launch_data_t ld_qdirs = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_QUEUEDIRECTORIES);
launch_data_t ld_vnodes = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_WATCHPATHS);
launch_data_t j_sockets = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_SOCKETS);
size_t i;
if (j_sockets)
job_watch_fds(j_sockets, NULL, &j->kqjob_callback);
for (i = 0; i < j->vnodes_cnt; i++) {
if (-1 == j->vnodes[i]) {
launch_data_t ld_idx = launch_data_array_get_index(ld_vnodes, i);
const char *thepath = launch_data_get_string(ld_idx);
if (-1 == (j->vnodes[i] = _fd(open(thepath, O_EVTONLY))))
job_log_error(j, LOG_ERR, "open(\"%s\", O_EVTONLY)", thepath);
}
assumes(kevent_mod(j->vnodes[i], EVFILT_VNODE, EV_ADD|EV_CLEAR,
NOTE_WRITE|NOTE_EXTEND|NOTE_DELETE|NOTE_RENAME|NOTE_REVOKE|NOTE_ATTRIB|NOTE_LINK,
0, &j->kqjob_callback) != -1);
}
for (i = 0; i < j->qdirs_cnt; i++) {
assumes(kevent_mod(j->qdirs[i], EVFILT_VNODE, EV_ADD|EV_CLEAR,
NOTE_WRITE|NOTE_EXTEND|NOTE_ATTRIB|NOTE_LINK, 0, &j->kqjob_callback) != -1);
}
for (i = 0; i < j->qdirs_cnt; i++) {
launch_data_t ld_idx = launch_data_array_get_index(ld_qdirs, i);
const char *thepath = launch_data_get_string(ld_idx);
int dcc_r;
if (-1 == (dcc_r = dir_has_files(thepath))) {
job_log_error(j, LOG_ERR, "dir_has_files(\"%s\", ...)", thepath);
} else if (dcc_r > 0 && !shutdown_in_progress) {
job_start(j);
break;
}
}
}
static void job_stop(struct jobcb *j)
{
if (j->p)
assumes(kill(j->p, SIGTERM) != -1);
}
static void job_remove(struct jobcb *j)
{
launch_data_t tmp;
size_t i;
job_log(j, LOG_DEBUG, "Removed");
TAILQ_REMOVE(&jobs, j, tqe);
if (j->p) {
if (kevent_mod(j->p, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, &kqsimple_zombie_reaper) == -1) {
job_reap(j);
} else {
job_stop(j);
}
}
if ((tmp = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_USERENVIRONMENTVARIABLES)))
launch_data_dict_iterate(tmp, unsetup_job_env, NULL);
launch_data_close_fds(j->ldj);
launch_data_free(j->ldj);
if (j->execfd)
close(j->execfd);
for (i = 0; i < j->vnodes_cnt; i++)
if (-1 != j->vnodes[i])
close(j->vnodes[i]);
if (j->vnodes)
free(j->vnodes);
for (i = 0; i < j->qdirs_cnt; i++)
if (-1 != j->qdirs[i])
close(j->qdirs[i]);
if (j->qdirs)
free(j->qdirs);
if (j->start_interval)
assumes(kevent_mod((uintptr_t)&j->start_interval, EVFILT_TIMER, EV_DELETE, 0, 0, NULL) != -1);
if (j->start_cal_interval) {
assumes(kevent_mod((uintptr_t)j->start_cal_interval, EVFILT_TIMER, EV_DELETE, 0, 0, NULL) != -1);
free(j->start_cal_interval);
}
kevent_mod((uintptr_t)j, EVFILT_TIMER, EV_DELETE, 0, 0, NULL);
free(j);
}
struct readmsg_context {
struct conncb *c;
launch_data_t resp;
};
static void ipc_readmsg(launch_data_t msg, void *context)
{
struct readmsg_context rmc = { context, NULL };
if (LAUNCH_DATA_DICTIONARY == launch_data_get_type(msg)) {
launch_data_dict_iterate(msg, ipc_readmsg2, &rmc);
} else if (LAUNCH_DATA_STRING == launch_data_get_type(msg)) {
ipc_readmsg2(NULL, launch_data_get_string(msg), &rmc);
} else {
rmc.resp = launch_data_new_errno(EINVAL);
}
if (NULL == rmc.resp)
rmc.resp = launch_data_new_errno(ENOSYS);
launch_data_close_fds(msg);
if (launchd_msg_send(rmc.c->conn, rmc.resp) == -1) {
if (errno == EAGAIN) {
assumes(kevent_mod(launchd_getfd(rmc.c->conn), EVFILT_WRITE, EV_ADD, 0, 0, &rmc.c->kqconn_callback) != -1);
} else {
syslog(LOG_DEBUG, "launchd_msg_send() == -1: %m");
ipc_close(rmc.c);
}
}
launch_data_free(rmc.resp);
}
static void
attach_bonjourfds_to_job(launch_data_t o, const char *key, void *context __attribute__((unused)))
{
struct jobcb *j = NULL;
TAILQ_FOREACH(j, &jobs, tqe) {
if (strcmp(j->label, key) == 0)
break;
}
if (j == NULL)
return;
launch_data_dict_insert(j->ldj, launch_data_copy(o), LAUNCH_JOBKEY_BONJOURFDS);
launch_data_revoke_fds(o);
}
static void ipc_readmsg2(launch_data_t data, const char *cmd, void *context)
{
struct readmsg_context *rmc = context;
launch_data_t resp = NULL;
struct jobcb *j;
if (rmc->resp)
return;
if (!strcmp(cmd, LAUNCH_KEY_STARTJOB)) {
TAILQ_FOREACH(j, &jobs, tqe) {
if (!strcmp(j->label, launch_data_get_string(data))) {
job_start(j);
resp = launch_data_new_errno(0);
}
}
if (NULL == resp)
resp = launch_data_new_errno(ESRCH);
} else if (!strcmp(cmd, LAUNCH_KEY_STOPJOB)) {
TAILQ_FOREACH(j, &jobs, tqe) {
if (!strcmp(j->label, launch_data_get_string(data))) {
job_stop(j);
resp = launch_data_new_errno(0);
}
}
if (NULL == resp)
resp = launch_data_new_errno(ESRCH);
} else if (!strcmp(cmd, LAUNCH_KEY_REMOVEJOB)) {
TAILQ_FOREACH(j, &jobs, tqe) {
if (!strcmp(j->label, launch_data_get_string(data))) {
job_remove(j);
resp = launch_data_new_errno(0);
}
}
if (NULL == resp)
resp = launch_data_new_errno(ESRCH);
} else if (!strcmp(cmd, LAUNCH_KEY_SUBMITJOB)) {
if (launch_data_get_type(data) == LAUNCH_DATA_ARRAY) {
launch_data_t tmp;
size_t i;
resp = launch_data_alloc(LAUNCH_DATA_ARRAY);
for (i = 0; i < launch_data_array_get_count(data); i++) {
tmp = load_job(launch_data_array_get_index(data, i));
launch_data_array_set_index(resp, tmp, i);
}
} else {
resp = load_job(data);
}
} else if (!strcmp(cmd, LAUNCH_KEY_WORKAROUNDBONJOUR)) {
launch_data_dict_iterate(data, attach_bonjourfds_to_job, NULL);
resp = launch_data_new_errno(0);
} else if (!strcmp(cmd, LAUNCH_KEY_UNSETUSERENVIRONMENT)) {
unsetenv(launch_data_get_string(data));
resp = launch_data_new_errno(0);
} else if (!strcmp(cmd, LAUNCH_KEY_GETUSERENVIRONMENT)) {
char **tmpenviron = environ;
resp = launch_data_alloc(LAUNCH_DATA_DICTIONARY);
for (; *tmpenviron; tmpenviron++) {
char envkey[1024];
launch_data_t s = launch_data_alloc(LAUNCH_DATA_STRING);
launch_data_set_string(s, strchr(*tmpenviron, '=') + 1);
strncpy(envkey, *tmpenviron, sizeof(envkey));
*(strchr(envkey, '=')) = '\0';
launch_data_dict_insert(resp, s, envkey);
}
} else if (!strcmp(cmd, LAUNCH_KEY_SETUSERENVIRONMENT)) {
launch_data_dict_iterate(data, set_user_env, NULL);
resp = launch_data_new_errno(0);
} else if (!strcmp(cmd, LAUNCH_KEY_CHECKIN)) {
if (rmc->c->j) {
if (assumes((resp = launch_data_copy(rmc->c->j->ldj)) != NULL)) {
if (NULL == launch_data_dict_lookup(resp, LAUNCH_JOBKEY_TIMEOUT)) {
launch_data_t to = launch_data_new_integer(LAUNCHD_MIN_JOB_RUN_TIME);
launch_data_dict_insert(resp, to, LAUNCH_JOBKEY_TIMEOUT);
}
}
rmc->c->j->checkedin = true;
} else {
resp = launch_data_new_errno(EACCES);
}
} else if (!strcmp(cmd, LAUNCH_KEY_RELOADTTYS)) {
update_ttys();
resp = launch_data_new_errno(0);
} else if (!strcmp(cmd, LAUNCH_KEY_SHUTDOWN)) {
do_shutdown();
resp = launch_data_new_errno(0);
} else if (!strcmp(cmd, LAUNCH_KEY_GETJOBS)) {
resp = get_jobs(NULL);
launch_data_revoke_fds(resp);
} else if (!strcmp(cmd, LAUNCH_KEY_GETRESOURCELIMITS)) {
resp = adjust_rlimits(NULL);
} else if (!strcmp(cmd, LAUNCH_KEY_SETRESOURCELIMITS)) {
resp = adjust_rlimits(data);
} else if (!strcmp(cmd, LAUNCH_KEY_GETJOB)) {
resp = get_jobs(launch_data_get_string(data));
launch_data_revoke_fds(resp);
} else if (!strcmp(cmd, LAUNCH_KEY_GETJOBWITHHANDLES)) {
resp = get_jobs(launch_data_get_string(data));
} else if (!strcmp(cmd, LAUNCH_KEY_SETLOGMASK)) {
resp = launch_data_new_integer(setlogmask(launch_data_get_integer(data)));
} else if (!strcmp(cmd, LAUNCH_KEY_GETLOGMASK)) {
int oldmask = setlogmask(LOG_UPTO(LOG_DEBUG));
resp = launch_data_new_integer(oldmask);
setlogmask(oldmask);
} else if (!strcmp(cmd, LAUNCH_KEY_SETUMASK)) {
resp = launch_data_new_integer(umask(launch_data_get_integer(data)));
} else if (!strcmp(cmd, LAUNCH_KEY_GETUMASK)) {
mode_t oldmask = umask(0);
resp = launch_data_new_integer(oldmask);
umask(oldmask);
} else if (!strcmp(cmd, LAUNCH_KEY_GETRUSAGESELF)) {
struct rusage rusage;
assumes(getrusage(RUSAGE_SELF, &rusage) != -1);
resp = launch_data_new_opaque(&rusage, sizeof(rusage));
} else if (!strcmp(cmd, LAUNCH_KEY_GETRUSAGECHILDREN)) {
struct rusage rusage;
assumes(getrusage(RUSAGE_CHILDREN, &rusage) != -1);
resp = launch_data_new_opaque(&rusage, sizeof(rusage));
} else if (!strcmp(cmd, LAUNCH_KEY_SETSTDOUT)) {
resp = setstdio(STDOUT_FILENO, data);
} else if (!strcmp(cmd, LAUNCH_KEY_SETSTDERR)) {
resp = setstdio(STDERR_FILENO, data);
} else if (!strcmp(cmd, LAUNCH_KEY_BATCHCONTROL)) {
batch_job_enable(launch_data_get_bool(data), rmc->c);
resp = launch_data_new_errno(0);
} else if (!strcmp(cmd, LAUNCH_KEY_BATCHQUERY)) {
resp = launch_data_alloc(LAUNCH_DATA_BOOL);
launch_data_set_bool(resp, batch_disabler_count == 0);
}
rmc->resp = resp;
}
static launch_data_t setstdio(int d, launch_data_t o)
{
launch_data_t resp = launch_data_new_errno(0);
if (launch_data_get_type(o) == LAUNCH_DATA_STRING) {
char **where = &pending_stderr;
if (d == STDOUT_FILENO)
where = &pending_stdout;
if (*where)
free(*where);
*where = strdup(launch_data_get_string(o));
} else if (launch_data_get_type(o) == LAUNCH_DATA_FD) {
assumes(dup2(launch_data_get_fd(o), d) != -1);
} else {
launch_data_set_errno(resp, EINVAL);
}
return resp;
}
static void batch_job_enable(bool e, struct conncb *c)
{
if (e && c->disabled_batch) {
batch_disabler_count--;
c->disabled_batch = 0;
if (batch_disabler_count == 0)
assumes(kevent_mod(asynckq, EVFILT_READ, EV_ENABLE, 0, 0, &kqasync_callback) != -1);
} else if (!e && !c->disabled_batch) {
if (batch_disabler_count == 0)
assumes(kevent_mod(asynckq, EVFILT_READ, EV_DISABLE, 0, 0, &kqasync_callback) != -1);
batch_disabler_count++;
c->disabled_batch = 1;
}
}
static launch_data_t load_job(launch_data_t pload)
{
launch_data_t tmp, resp;
const char *label;
struct jobcb *j;
bool startnow, hasprog = false, hasprogargs = false;
if ((label = job_get_string(pload, LAUNCH_JOBKEY_LABEL))) {
TAILQ_FOREACH(j, &jobs, tqe) {
if (!strcmp(j->label, label)) {
resp = launch_data_new_errno(EEXIST);
goto out;
}
}
} else {
resp = launch_data_new_errno(EINVAL);
goto out;
}
if (launch_data_dict_lookup(pload, LAUNCH_JOBKEY_PROGRAM))
hasprog = true;
if (launch_data_dict_lookup(pload, LAUNCH_JOBKEY_PROGRAMARGUMENTS))
hasprogargs = true;
if (!hasprog && !hasprogargs) {
resp = launch_data_new_errno(EINVAL);
goto out;
}
j = calloc(1, sizeof(struct jobcb) + strlen(label) + 1);
strcpy(j->label, label);
j->ldj = launch_data_copy(pload);
launch_data_revoke_fds(pload);
j->kqjob_callback = job_callback;
if (launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_ONDEMAND) == NULL) {
tmp = launch_data_alloc(LAUNCH_DATA_BOOL);
launch_data_set_bool(tmp, true);
launch_data_dict_insert(j->ldj, tmp, LAUNCH_JOBKEY_ONDEMAND);
}
TAILQ_INSERT_TAIL(&jobs, j, tqe);
j->debug = job_get_bool(j->ldj, LAUNCH_JOBKEY_DEBUG);
startnow = !job_get_bool(j->ldj, LAUNCH_JOBKEY_ONDEMAND);
if (job_get_bool(j->ldj, LAUNCH_JOBKEY_RUNATLOAD))
startnow = true;
if ((tmp = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_QUEUEDIRECTORIES))) {
size_t i;
j->qdirs_cnt = launch_data_array_get_count(tmp);
j->qdirs = malloc(sizeof(int) * j->qdirs_cnt);
for (i = 0; i < j->qdirs_cnt; i++) {
const char *thepath = launch_data_get_string(launch_data_array_get_index(tmp, i));
if (-1 == (j->qdirs[i] = _fd(open(thepath, O_EVTONLY))))
job_log_error(j, LOG_ERR, "open(\"%s\", O_EVTONLY)", thepath);
}
}
if ((tmp = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_STARTINTERVAL))) {
j->start_interval = launch_data_get_integer(tmp);
if (j->start_interval == 0) {
job_log(j, LOG_WARNING, "StartInterval is zero, ignoring");
} else {
assumes(kevent_mod((uintptr_t)&j->start_interval, EVFILT_TIMER, EV_ADD, NOTE_SECONDS, j->start_interval, j) != -1);
}
}
if ((tmp = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_STARTCALENDARINTERVAL))) {
launch_data_t tmp_k;
j->start_cal_interval = calloc(1, sizeof(struct tm));
j->start_cal_interval->tm_min = -1;
j->start_cal_interval->tm_hour = -1;
j->start_cal_interval->tm_mday = -1;
j->start_cal_interval->tm_wday = -1;
j->start_cal_interval->tm_mon = -1;
if (LAUNCH_DATA_DICTIONARY == launch_data_get_type(tmp)) {
if ((tmp_k = launch_data_dict_lookup(tmp, LAUNCH_JOBKEY_CAL_MINUTE)))
j->start_cal_interval->tm_min = launch_data_get_integer(tmp_k);
if ((tmp_k = launch_data_dict_lookup(tmp, LAUNCH_JOBKEY_CAL_HOUR)))
j->start_cal_interval->tm_hour = launch_data_get_integer(tmp_k);
if ((tmp_k = launch_data_dict_lookup(tmp, LAUNCH_JOBKEY_CAL_DAY)))
j->start_cal_interval->tm_mday = launch_data_get_integer(tmp_k);
if ((tmp_k = launch_data_dict_lookup(tmp, LAUNCH_JOBKEY_CAL_WEEKDAY)))
j->start_cal_interval->tm_wday = launch_data_get_integer(tmp_k);
if ((tmp_k = launch_data_dict_lookup(tmp, LAUNCH_JOBKEY_CAL_MONTH)))
j->start_cal_interval->tm_mon = launch_data_get_integer(tmp_k);
}
job_set_alarm(j);
}
if ((tmp = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_WATCHPATHS))) {
size_t i;
j->vnodes_cnt = launch_data_array_get_count(tmp);
j->vnodes = malloc(sizeof(int) * j->vnodes_cnt);
for (i = 0; i < j->vnodes_cnt; i++) {
const char *thepath = launch_data_get_string(launch_data_array_get_index(tmp, i));
assumes((j->vnodes[i] = _fd(open(thepath, O_EVTONLY))) != -1);
}
}
if ((tmp = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_USERENVIRONMENTVARIABLES)))
launch_data_dict_iterate(tmp, setup_job_env, NULL);
if (job_get_bool(j->ldj, LAUNCH_JOBKEY_ONDEMAND))
job_watch(j);
if (startnow)
job_start(j);
resp = launch_data_new_errno(0);
out:
return resp;
}
static launch_data_t get_jobs(const char *which)
{
struct jobcb *j;
launch_data_t tmp, resp = NULL;
if (which) {
TAILQ_FOREACH(j, &jobs, tqe) {
if (!strcmp(which, j->label))
resp = launch_data_copy(j->ldj);
}
if (resp == NULL)
resp = launch_data_new_errno(ESRCH);
} else {
resp = launch_data_alloc(LAUNCH_DATA_DICTIONARY);
TAILQ_FOREACH(j, &jobs, tqe) {
tmp = launch_data_copy(j->ldj);
launch_data_dict_insert(resp, tmp, j->label);
}
}
return resp;
}
static void usage(FILE *where)
{
fprintf(where, "%s: [-d] [-- command [args ...]]\n", getprogname());
fprintf(where, "\t-d\tdaemonize\n");
fprintf(where, "\t-h\tthis usage statement\n");
if (where == stdout)
exit(EXIT_SUCCESS);
}
int kevent_mod(uintptr_t ident, short filter, u_short flags, u_int fflags, intptr_t data, void *udata)
{
struct kevent kev;
int q = mainkq;
if (EVFILT_TIMER == filter || EVFILT_VNODE == filter)
q = asynckq;
if (flags & EV_ADD && !assumes(udata != NULL)) {
errno = EINVAL;
return -1;
}
#ifdef PID1_REAP_ADOPTED_CHILDREN
if (filter == EVFILT_PROC && getpid() == 1)
return 0;
#endif
EV_SET(&kev, ident, filter, flags, fflags, data, udata);
return kevent(q, &kev, 1, NULL, 0, NULL);
}
static int _fd(int fd)
{
if (fd >= 0)
assumes(fcntl(fd, F_SETFD, 1) != -1);
return fd;
}
static void ipc_close(struct conncb *c)
{
batch_job_enable(true, c);
TAILQ_REMOVE(&connections, c, tqe);
launchd_close(c->conn);
free(c);
}
static void setup_job_env(launch_data_t obj, const char *key, void *context __attribute__((unused)))
{
if (LAUNCH_DATA_STRING == launch_data_get_type(obj))
setenv(key, launch_data_get_string(obj), 1);
}
static void unsetup_job_env(launch_data_t obj, const char *key, void *context __attribute__((unused)))
{
if (LAUNCH_DATA_STRING == launch_data_get_type(obj))
unsetenv(key);
}
static void job_reap(struct jobcb *j)
{
bool od = job_get_bool(j->ldj, LAUNCH_JOBKEY_ONDEMAND);
time_t td = time(NULL) - j->start_time;
bool bad_exit = false;
int status;
job_log(j, LOG_DEBUG, "Reaping");
if (j->execfd) {
assumes(close(j->execfd) != -1);
j->execfd = 0;
}
#ifdef PID1_REAP_ADOPTED_CHILDREN
if (getpid() == 1)
status = pid1_child_exit_status;
else
#endif
if (!assumes(waitpid(j->p, &status, 0) != -1)) {
return;
}
if (WIFEXITED(status) && WEXITSTATUS(status) != 0) {
job_log(j, LOG_WARNING, "exited with exit code: %d", WEXITSTATUS(status));
bad_exit = true;
}
if (WIFSIGNALED(status)) {
int s = WTERMSIG(status);
if (SIGKILL == s || SIGTERM == s) {
job_log(j, LOG_NOTICE, "exited: %s", strsignal(s));
} else {
job_log(j, LOG_WARNING, "exited abnormally: %s", strsignal(s));
bad_exit = true;
}
}
if (!od) {
if (td < LAUNCHD_MIN_JOB_RUN_TIME) {
job_log(j, LOG_WARNING, "respawning too quickly! throttling");
bad_exit = true;
j->throttle = true;
} else if (td >= LAUNCHD_REWARD_JOB_RUN_TIME) {
job_log(j, LOG_INFO, "lived long enough, forgiving past exit failures");
j->failed_exits = 0;
}
}
if (bad_exit)
j->failed_exits++;
if (j->failed_exits > 0) {
int failures_left = LAUNCHD_FAILED_EXITS_THRESHOLD - j->failed_exits;
if (failures_left)
job_log(j, LOG_WARNING, "%d more failure%s without living at least %d seconds will cause job removal",
failures_left, failures_left > 1 ? "s" : "", LAUNCHD_REWARD_JOB_RUN_TIME);
}
total_children--;
j->p = 0;
}
static bool job_restart_fitness_test(struct jobcb *j)
{
bool od = job_get_bool(j->ldj, LAUNCH_JOBKEY_ONDEMAND);
if (j->firstborn) {
job_log(j, LOG_DEBUG, "first born died, begin shutdown");
do_shutdown();
return false;
} else if (job_get_bool(j->ldj, LAUNCH_JOBKEY_SERVICEIPC) && !j->checkedin) {
job_log(j, LOG_WARNING, "failed to checkin");
job_remove(j);
return false;
} else if (j->failed_exits >= LAUNCHD_FAILED_EXITS_THRESHOLD) {
job_log(j, LOG_WARNING, "too many failures in succession");
job_remove(j);
return false;
} else if (od || shutdown_in_progress) {
if (!od && shutdown_in_progress)
job_log(j, LOG_NOTICE, "exited while shutdown is in progress, will not restart unless demand requires it");
job_watch(j);
return false;
}
return true;
}
static void job_callback(void *obj, struct kevent *kev)
{
struct jobcb *j = obj;
bool d = j->debug;
bool startnow = true;
int oldmask = 0;
if (d) {
oldmask = setlogmask(LOG_UPTO(LOG_DEBUG));
job_log(j, LOG_DEBUG, "log level debug temporarily enabled while processing job");
}
if (kev->filter == EVFILT_PROC) {
job_reap(j);
startnow = job_restart_fitness_test(j);
if (startnow && j->throttle) {
j->throttle = false;
job_log(j, LOG_WARNING, "will restart in %d seconds", LAUNCHD_MIN_JOB_RUN_TIME);
if (assumes(kevent_mod((uintptr_t)j, EVFILT_TIMER, EV_ADD|EV_ONESHOT,
NOTE_SECONDS, LAUNCHD_MIN_JOB_RUN_TIME, &j->kqjob_callback) != -1)) {
startnow = false;
}
}
} else if (kev->filter == EVFILT_TIMER && (void *)kev->ident == j->start_cal_interval) {
job_set_alarm(j);
} else if (kev->filter == EVFILT_VNODE) {
size_t i;
const char *thepath = NULL;
for (i = 0; i < j->vnodes_cnt; i++) {
if (j->vnodes[i] == (int)kev->ident) {
launch_data_t ld_vnodes = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_WATCHPATHS);
thepath = launch_data_get_string(launch_data_array_get_index(ld_vnodes, i));
job_log(j, LOG_DEBUG, "watch path modified: %s", thepath);
if ((NOTE_DELETE|NOTE_RENAME|NOTE_REVOKE) & kev->fflags) {
job_log(j, LOG_DEBUG, "watch path invalidated: %s", thepath);
assumes(close(j->vnodes[i]) != -1);
j->vnodes[i] = -1;
}
}
}
for (i = 0; i < j->qdirs_cnt; i++) {
if (j->qdirs[i] == (int)kev->ident) {
launch_data_t ld_qdirs = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_QUEUEDIRECTORIES);
int dcc_r;
thepath = launch_data_get_string(launch_data_array_get_index(ld_qdirs, i));
job_log(j, LOG_DEBUG, "queue directory modified: %s", thepath);
if (-1 == (dcc_r = dir_has_files(thepath))) {
job_log_error(j, LOG_ERR, "dir_has_files(\"%s\", ...)", thepath);
} else if (0 == dcc_r) {
job_log(j, LOG_DEBUG, "spurious wake up, directory empty: %s", thepath);
startnow = false;
}
}
}
} else if (kev->filter == EVFILT_READ && (int)kev->ident == j->execfd) {
if (kev->data > 0) {
int e;
assumes(read(j->execfd, &e, sizeof(e)) != -1);
errno = e;
job_log_error(j, LOG_ERR, "execve()");
job_remove(j);
j = NULL;
startnow = false;
} else {
assumes(close(j->execfd) != -1);
j->execfd = 0;
}
startnow = false;
}
if (startnow)
job_start(j);
if (d) {
syslog(LOG_DEBUG, "restoring original log mask");
setlogmask(oldmask);
}
}
static void job_start(struct jobcb *j)
{
int spair[2];
int execspair[2];
bool sipc;
char nbuf[64];
pid_t c;
job_log(j, LOG_DEBUG, "Starting");
if (j->p) {
job_log(j, LOG_DEBUG, "already running");
return;
}
j->checkedin = false;
sipc = job_get_bool(j->ldj, LAUNCH_JOBKEY_SERVICEIPC);
if (launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_INETDCOMPATIBILITY))
sipc = true;
if (sipc)
assumes(socketpair(AF_UNIX, SOCK_STREAM, 0, spair) != -1);
assumes(socketpair(AF_UNIX, SOCK_STREAM, 0, execspair) != -1);
time(&j->start_time);
switch (c = fork_with_bootstrap_port(launchd_bootstrap_port)) {
case -1:
job_log_error(j, LOG_ERR, "fork() failed, will try again in one second");
assumes(close(execspair[0]) != -1);
assumes(close(execspair[1]) != -1);;
if (sipc) {
assumes(close(spair[0]) != -1);
assumes(close(spair[1]) != -1);
}
if (job_get_bool(j->ldj, LAUNCH_JOBKEY_ONDEMAND))
job_ignore(j);
break;
case 0:
assumes(close(execspair[0]) != -1);
assumes(read(_fd(execspair[1]), &c, sizeof(c)) != -1);
if (j->firstborn) {
setpgid(getpid(), getpid());
if (isatty(STDIN_FILENO)) {
if (tcsetpgrp(STDIN_FILENO, getpid()) == -1)
job_log_error(j, LOG_WARNING, "tcsetpgrp()");
}
}
if (sipc) {
assumes(close(spair[0]) != -1);
sprintf(nbuf, "%d", spair[1]);
setenv(LAUNCHD_TRUSTED_FD_ENV, nbuf, 1);
}
job_start_child(j, execspair[1]);
break;
default:
assumes(close(execspair[1]) != -1);
j->execfd = _fd(execspair[0]);
if (sipc) {
assumes(close(spair[1]) != -1);
ipc_open(_fd(spair[0]), j);
}
assumes(kevent_mod(j->execfd, EVFILT_READ, EV_ADD, 0, 0, j) != -1);
if (assumes(kevent_mod(c, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, j) != -1)) {
j->p = c;
total_children++;
if (job_get_bool(j->ldj, LAUNCH_JOBKEY_ONDEMAND))
job_ignore(j);
} else {
job_reap(j);
}
assumes(write(j->execfd, &c, sizeof(c)) != -1);
break;
}
}
static void job_start_child(struct jobcb *j, int execfd)
{
launch_data_t ldpa = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_PROGRAMARGUMENTS);
bool inetcompat = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_INETDCOMPATIBILITY) ? true : false;
size_t i, argv_cnt;
const char **argv, *file2exec = "/usr/libexec/launchproxy";
int r;
bool hasprog = false;
job_setup_attributes(j);
if (ldpa) {
argv_cnt = launch_data_array_get_count(ldpa);
argv = alloca((argv_cnt + 2) * sizeof(char *));
for (i = 0; i < argv_cnt; i++)
argv[i + 1] = launch_data_get_string(launch_data_array_get_index(ldpa, i));
argv[argv_cnt + 1] = NULL;
} else {
argv = alloca(3 * sizeof(char *));
argv[1] = job_get_string(j->ldj, LAUNCH_JOBKEY_PROGRAM);
argv[2] = NULL;
}
if (job_get_string(j->ldj, LAUNCH_JOBKEY_PROGRAM))
hasprog = true;
if (inetcompat) {
argv[0] = file2exec;
} else {
argv++;
file2exec = job_get_file2exec(j->ldj);
}
if (hasprog) {
r = execv(file2exec, (char *const*)argv);
} else {
r = execvp(file2exec, (char *const*)argv);
}
if (-1 == r) {
assumes(write(execfd, &errno, sizeof(errno)) != -1);
job_log_error(j, LOG_ERR, "execv%s(\"%s\", ...)", hasprog ? "" : "p", file2exec);
}
_exit(EXIT_FAILURE);
}
static void job_setup_attributes(struct jobcb *j)
{
launch_data_t srl = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_SOFTRESOURCELIMITS);
launch_data_t hrl = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_HARDRESOURCELIMITS);
bool inetcompat = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_INETDCOMPATIBILITY) ? true : false;
launch_data_t tmp;
size_t i;
const char *tmpstr;
struct group *gre = NULL;
gid_t gre_g = 0;
static const struct {
const char *key;
int val;
} limits[] = {
{ LAUNCH_JOBKEY_RESOURCELIMIT_CORE, RLIMIT_CORE },
{ LAUNCH_JOBKEY_RESOURCELIMIT_CPU, RLIMIT_CPU },
{ LAUNCH_JOBKEY_RESOURCELIMIT_DATA, RLIMIT_DATA },
{ LAUNCH_JOBKEY_RESOURCELIMIT_FSIZE, RLIMIT_FSIZE },
{ LAUNCH_JOBKEY_RESOURCELIMIT_MEMLOCK, RLIMIT_MEMLOCK },
{ LAUNCH_JOBKEY_RESOURCELIMIT_NOFILE, RLIMIT_NOFILE },
{ LAUNCH_JOBKEY_RESOURCELIMIT_NPROC, RLIMIT_NPROC },
{ LAUNCH_JOBKEY_RESOURCELIMIT_RSS, RLIMIT_RSS },
{ LAUNCH_JOBKEY_RESOURCELIMIT_STACK, RLIMIT_STACK },
};
setpriority(PRIO_PROCESS, 0, job_get_integer(j->ldj, LAUNCH_JOBKEY_NICE));
if (srl || hrl) {
for (i = 0; i < (sizeof(limits) / sizeof(limits[0])); i++) {
struct rlimit rl;
if (!assumes(getrlimit(limits[i].val, &rl) != -1)) {
continue;
}
if (hrl)
rl.rlim_max = job_get_integer(hrl, limits[i].key);
if (srl)
rl.rlim_cur = job_get_integer(srl, limits[i].key);
assumes(setrlimit(limits[i].val, &rl) != -1);
}
}
if (!inetcompat && job_get_bool(j->ldj, LAUNCH_JOBKEY_SESSIONCREATE))
launchd_SessionCreate(job_get_file2exec(j->ldj));
if (job_get_bool(j->ldj, LAUNCH_JOBKEY_LOWPRIORITYIO)) {
int lowprimib[] = { CTL_KERN, KERN_PROC_LOW_PRI_IO };
int val = 1;
assumes(sysctl(lowprimib, sizeof(lowprimib) / sizeof(lowprimib[0]), NULL, NULL, &val, sizeof(val)) != -1);
}
if ((tmpstr = job_get_string(j->ldj, LAUNCH_JOBKEY_ROOTDIRECTORY))) {
assumes(chroot(tmpstr) != -1);
assumes(chdir(".") != -1);
}
if ((tmpstr = job_get_string(j->ldj, LAUNCH_JOBKEY_GROUPNAME))) {
gre = getgrnam(tmpstr);
if (gre) {
gre_g = gre->gr_gid;
if (-1 == setgid(gre_g)) {
job_log_error(j, LOG_ERR, "setgid(%d)", gre_g);
exit(EXIT_FAILURE);
}
} else {
job_log(j, LOG_ERR, "getgrnam(\"%s\") failed", tmpstr);
exit(EXIT_FAILURE);
}
}
if ((tmpstr = job_get_string(j->ldj, LAUNCH_JOBKEY_USERNAME))) {
struct passwd *pwe = getpwnam(tmpstr);
if (pwe) {
uid_t pwe_u = pwe->pw_uid;
uid_t pwe_g = pwe->pw_gid;
if (pwe->pw_expire && time(NULL) >= pwe->pw_expire) {
job_log(j, LOG_ERR, "expired account: %s", tmpstr);
exit(EXIT_FAILURE);
}
if (job_get_bool(j->ldj, LAUNCH_JOBKEY_INITGROUPS)) {
if (-1 == initgroups(tmpstr, gre ? gre_g : pwe_g)) {
job_log_error(j, LOG_ERR, "initgroups()");
exit(EXIT_FAILURE);
}
}
if (!gre) {
if (-1 == setgid(pwe_g)) {
job_log_error(j, LOG_ERR, "setgid(%d)", pwe_g);
exit(EXIT_FAILURE);
}
}
if (-1 == setuid(pwe_u)) {
job_log_error(j, LOG_ERR, "setuid(%d)", pwe_u);
exit(EXIT_FAILURE);
}
} else {
job_log(j, LOG_WARNING, "getpwnam(\"%s\") failed", tmpstr);
exit(EXIT_FAILURE);
}
}
if ((tmpstr = job_get_string(j->ldj, LAUNCH_JOBKEY_WORKINGDIRECTORY)))
assumes(chdir(tmpstr) != -1);
if (launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_UMASK))
umask(job_get_integer(j->ldj, LAUNCH_JOBKEY_UMASK));
if ((tmpstr = job_get_string(j->ldj, LAUNCH_JOBKEY_STANDARDOUTPATH))) {
int sofd = open(tmpstr, O_WRONLY|O_APPEND|O_CREAT, DEFFILEMODE);
if (assumes(sofd != -1)) {
assumes(dup2(sofd, STDOUT_FILENO) != -1);
assumes(close(sofd) != -1);
}
}
if ((tmpstr = job_get_string(j->ldj, LAUNCH_JOBKEY_STANDARDERRORPATH))) {
int sefd = open(tmpstr, O_WRONLY|O_APPEND|O_CREAT, DEFFILEMODE);
if (assumes(sefd != -1)) {
assumes(dup2(sefd, STDERR_FILENO) != -1);
assumes(close(sefd) != -1);
}
}
if ((tmp = launch_data_dict_lookup(j->ldj, LAUNCH_JOBKEY_ENVIRONMENTVARIABLES)))
launch_data_dict_iterate(tmp, setup_job_env, NULL);
assumes(setsid() != -1);
}
#ifdef PID1_REAP_ADOPTED_CHILDREN
__private_extern__ int pid1_child_exit_status = 0;
static void pid1waitpid(void)
{
pid_t p;
while ((p = waitpid(-1, &pid1_child_exit_status, WNOHANG)) > 0) {
if (!launchd_check_pid(p))
init_check_pid(p);
}
}
#endif
static void do_shutdown(void)
{
struct jobcb *j;
shutdown_in_progress = true;
assumes(kevent_mod(asynckq, EVFILT_READ, EV_DISABLE, 0, 0, &kqasync_callback) != -1);
TAILQ_FOREACH(j, &jobs, tqe)
job_stop(j);
if (getpid() == 1) {
catatonia();
mach_start_shutdown(SIGTERM);
}
}
static void signal_callback(void *obj __attribute__((unused)), struct kevent *kev)
{
switch (kev->ident) {
case SIGHUP:
update_ttys();
reload_launchd_config();
break;
case SIGTERM:
do_shutdown();
break;
#ifdef PID1_REAP_ADOPTED_CHILDREN
case SIGCHLD:
if (getpid() == 1)
pid1waitpid();
break;
#endif
default:
break;
}
}
static void fs_callback(void)
{
static bool mounted_volfs = false;
if (1 != getpid())
mounted_volfs = true;
if (pending_stdout) {
int fd = open(pending_stdout, O_CREAT|O_APPEND|O_WRONLY, DEFFILEMODE);
if (fd != -1) {
assumes(dup2(fd, STDOUT_FILENO) != -1);
assumes(close(fd) != -1);
free(pending_stdout);
pending_stdout = NULL;
}
}
if (pending_stderr) {
int fd = open(pending_stderr, O_CREAT|O_APPEND|O_WRONLY, DEFFILEMODE);
if (fd != -1) {
assumes(dup2(fd, STDERR_FILENO) != -1);
assumes(close(fd) != -1);
free(pending_stderr);
pending_stderr = NULL;
}
}
if (!mounted_volfs) {
int r = mount("volfs", VOLFSDIR, MNT_RDONLY, NULL);
if (-1 == r && errno == ENOENT) {
assumes(mkdir(VOLFSDIR, ACCESSPERMS & ~(S_IWUSR|S_IWGRP|S_IWOTH)) != -1);
r = mount("volfs", VOLFSDIR, MNT_RDONLY, NULL);
}
if (-1 == r) {
syslog(LOG_WARNING, "mount(\"%s\", \"%s\", ...): %m", "volfs", VOLFSDIR);
} else {
mounted_volfs = true;
}
}
if (!launchd_inited)
launchd_server_init(false);
}
static void readcfg_callback(void *obj __attribute__((unused)), struct kevent *kev __attribute__((unused)))
{
int status;
#ifdef PID1_REAP_ADOPTED_CHILDREN
if (getpid() == 1)
status = pid1_child_exit_status;
else
#endif
if (-1 == waitpid(readcfg_pid, &status, 0)) {
syslog(LOG_WARNING, "waitpid(readcfg_pid, ...): %m");
return;
}
readcfg_pid = 0;
if (WIFEXITED(status)) {
if (WEXITSTATUS(status))
syslog(LOG_WARNING, "Unable to read launchd.conf: launchctl exited with status: %d", WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
syslog(LOG_WARNING, "Unable to read launchd.conf: launchctl exited abnormally: %s", strsignal(WTERMSIG(status)));
} else {
syslog(LOG_WARNING, "Unable to read launchd.conf: launchctl exited abnormally");
}
}
static void reload_launchd_config(void)
{
struct stat sb;
static char *ldconf = PID1LAUNCHD_CONF;
const char *h = getenv("HOME");
if (h && ldconf == PID1LAUNCHD_CONF)
asprintf(&ldconf, "%s/%s", h, LAUNCHD_CONF);
if (!ldconf)
return;
if (lstat(ldconf, &sb) == 0) {
int spair[2];
assumes(socketpair(AF_UNIX, SOCK_STREAM, 0, spair) != -1);
readcfg_pid = fork_with_bootstrap_port(launchd_bootstrap_port);
if (readcfg_pid == 0) {
char nbuf[100];
assumes(close(spair[0]) != -1);
sprintf(nbuf, "%d", spair[1]);
setenv(LAUNCHD_TRUSTED_FD_ENV, nbuf, 1);
int fd = open(ldconf, O_RDONLY);
if (fd == -1) {
syslog(LOG_ERR, "open(\"%s\"): %m", ldconf);
exit(EXIT_FAILURE);
}
assumes(dup2(fd, STDIN_FILENO) != -1);
assumes(close(fd) != -1);
assumes(execl(LAUNCHCTL_PATH, LAUNCHCTL_PATH, NULL) != -1);
_exit(EXIT_FAILURE);
} else if (readcfg_pid == -1) {
assumes(close(spair[0]) != -1);
assumes(close(spair[1]) != -1);
syslog(LOG_ERR, "fork(): %m");
readcfg_pid = 0;
} else {
assumes(close(spair[1]) != -1);
ipc_open(_fd(spair[0]), NULL);
assumes(kevent_mod(readcfg_pid, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, &kqreadcfg_callback) != -1);
}
}
}
static void conceive_firstborn(char *argv[])
{
launch_data_t r, d = launch_data_alloc(LAUNCH_DATA_DICTIONARY);
launch_data_t args = launch_data_alloc(LAUNCH_DATA_ARRAY);
launch_data_t l = launch_data_new_string("com.apple.launchd.firstborn");
size_t i;
for (i = 0; *argv; argv++, i++)
launch_data_array_set_index(args, launch_data_new_string(*argv), i);
launch_data_dict_insert(d, args, LAUNCH_JOBKEY_PROGRAMARGUMENTS);
launch_data_dict_insert(d, l, LAUNCH_JOBKEY_LABEL);
r = load_job(d);
launch_data_free(r);
launch_data_free(d);
TAILQ_FIRST(&jobs)->firstborn = true;
}
static void loopback_setup(void)
{
struct ifaliasreq ifra;
struct in6_aliasreq ifra6;
struct ifreq ifr;
int s, s6;
memset(&ifr, 0, sizeof(ifr));
strcpy(ifr.ifr_name, "lo0");
assumes((s = socket(AF_INET, SOCK_DGRAM, 0)) != -1);
assumes((s6 = socket(AF_INET6, SOCK_DGRAM, 0)) != -1);
if (ioctl(s, SIOCGIFFLAGS, &ifr) == -1) {
syslog(LOG_ERR, "ioctl(SIOCGIFFLAGS): %m");
} else {
ifr.ifr_flags |= IFF_UP;
assumes(ioctl(s, SIOCSIFFLAGS, &ifr) != -1);
}
memset(&ifr, 0, sizeof(ifr));
strcpy(ifr.ifr_name, "lo0");
if (ioctl(s6, SIOCGIFFLAGS, &ifr) == -1) {
syslog(LOG_ERR, "ioctl(SIOCGIFFLAGS): %m");
} else {
ifr.ifr_flags |= IFF_UP;
assumes(ioctl(s6, SIOCSIFFLAGS, &ifr) != -1);
}
memset(&ifra, 0, sizeof(ifra));
strcpy(ifra.ifra_name, "lo0");
((struct sockaddr_in *)&ifra.ifra_addr)->sin_family = AF_INET;
((struct sockaddr_in *)&ifra.ifra_addr)->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
((struct sockaddr_in *)&ifra.ifra_addr)->sin_len = sizeof(struct sockaddr_in);
((struct sockaddr_in *)&ifra.ifra_mask)->sin_family = AF_INET;
((struct sockaddr_in *)&ifra.ifra_mask)->sin_addr.s_addr = htonl(IN_CLASSA_NET);
((struct sockaddr_in *)&ifra.ifra_mask)->sin_len = sizeof(struct sockaddr_in);
assumes(ioctl(s, SIOCAIFADDR, &ifra) != -1);
memset(&ifra6, 0, sizeof(ifra6));
strcpy(ifra6.ifra_name, "lo0");
ifra6.ifra_addr.sin6_family = AF_INET6;
ifra6.ifra_addr.sin6_addr = in6addr_loopback;
ifra6.ifra_addr.sin6_len = sizeof(struct sockaddr_in6);
ifra6.ifra_prefixmask.sin6_family = AF_INET6;
memset(&ifra6.ifra_prefixmask.sin6_addr, 0xff, sizeof(struct in6_addr));
ifra6.ifra_prefixmask.sin6_len = sizeof(struct sockaddr_in6);
ifra6.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME;
ifra6.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME;
assumes(ioctl(s6, SIOCAIFADDR_IN6, &ifra6) != -1);
assumes(close(s) != -1);
assumes(close(s6) != -1);
}
static void workaround3048875(int argc, char *argv[])
{
int i;
char **ap, *newargv[100], *p = argv[1];
if (argc == 1 || argc > 2)
return;
newargv[0] = argv[0];
for (ap = newargv + 1, i = 1; ap < &newargv[100]; ap++, i++) {
if ((*ap = strsep(&p, " \t")) == NULL)
break;
if (**ap == '\0') {
*ap = NULL;
break;
}
}
if (argc == i)
return;
execv(newargv[0], newargv);
}
static launch_data_t adjust_rlimits(launch_data_t in)
{
static struct rlimit *l = NULL;
static size_t lsz = sizeof(struct rlimit) * RLIM_NLIMITS;
struct rlimit *ltmp;
size_t i,ltmpsz;
if (l == NULL) {
l = malloc(lsz);
for (i = 0; i < RLIM_NLIMITS; i++) {
assumes(getrlimit(i, l + i) != -1);
}
}
if (in) {
ltmp = launch_data_get_opaque(in);
ltmpsz = launch_data_get_opaque_size(in);
if (ltmpsz > lsz) {
syslog(LOG_WARNING, "Too much rlimit data sent!");
ltmpsz = lsz;
}
for (i = 0; i < (ltmpsz / sizeof(struct rlimit)); i++) {
if (ltmp[i].rlim_cur == l[i].rlim_cur && ltmp[i].rlim_max == l[i].rlim_max)
continue;
if (readcfg_pid && getpid() == 1) {
int gmib[] = { CTL_KERN, KERN_MAXPROC };
int pmib[] = { CTL_KERN, KERN_MAXPROCPERUID };
const char *gstr = "kern.maxproc";
const char *pstr = "kern.maxprocperuid";
int gval = ltmp[i].rlim_max;
int pval = ltmp[i].rlim_cur;
switch (i) {
case RLIMIT_NOFILE:
gmib[1] = KERN_MAXFILES;
pmib[1] = KERN_MAXFILESPERPROC;
gstr = "kern.maxfiles";
pstr = "kern.maxfilesperproc";
break;
case RLIMIT_NPROC:
if (gval > (2048 + 20))
gval = 2048 + 20;
break;
default:
break;
}
assumes(sysctl(gmib, 2, NULL, NULL, &gval, sizeof(gval)) != -1);
assumes(sysctl(pmib, 2, NULL, NULL, &pval, sizeof(pval)) != -1);
}
assumes(setrlimit(i, ltmp + i) != -1);
assumes(getrlimit(i, l + i) != -1);
}
}
return launch_data_new_opaque(l, sizeof(struct rlimit) * RLIM_NLIMITS);
}
__private_extern__ void launchd_SessionCreate(const char *who)
{
void *seclib = dlopen(SECURITY_LIB, RTLD_LAZY);
OSStatus (*sescr)(SessionCreationFlags flags, SessionAttributeBits attributes);
if (seclib) {
sescr = dlsym(seclib, "SessionCreate");
if (sescr) {
OSStatus scr = sescr(0, 0);
if (scr != noErr)
syslog(LOG_WARNING, "%s: SessionCreate() failed: %d", who, scr);
} else {
syslog(LOG_WARNING, "%s: couldn't find SessionCreate() in %s", who, SECURITY_LIB);
}
dlclose(seclib);
} else {
syslog(LOG_WARNING, "%s: dlopen(\"%s\",...): %s", who, SECURITY_LIB, dlerror());
}
}
static int dir_has_files(const char *path)
{
DIR *dd = opendir(path);
struct dirent *de;
bool r = 0;
if (!dd)
return -1;
while ((de = readdir(dd))) {
if (strcmp(de->d_name, ".") && strcmp(de->d_name, "..")) {
r = 1;
break;
}
}
closedir(dd);
return r;
}
static void job_set_alarm(struct jobcb *j)
{
time_t later;
later = cronemu(j->start_cal_interval->tm_mon, j->start_cal_interval->tm_mday,
j->start_cal_interval->tm_hour, j->start_cal_interval->tm_min);
if (j->start_cal_interval->tm_wday != -1) {
time_t otherlater = cronemu_wday(j->start_cal_interval->tm_wday,
j->start_cal_interval->tm_hour, j->start_cal_interval->tm_min);
if (-1 != j->start_cal_interval->tm_mday) {
later = later < otherlater ? later : otherlater;
} else {
later = otherlater;
}
}
if (-1 == kevent_mod((uintptr_t)j->start_cal_interval, EVFILT_TIMER, EV_ADD, NOTE_ABSOLUTE|NOTE_SECONDS, later, j)) {
job_log_error(j, LOG_ERR, "adding kevent alarm");
} else {
job_log(j, LOG_INFO, "scheduled to run again at: %s", ctime(&later));
}
}
void
job_prep_log_msg(struct jobcb *j, char *buf, const char *msg, int err)
{
size_t lsz = strlen(j->label);
size_t i, o;
for (i = 0, o = 0; i < lsz; i++, o++) {
if (j->label[i] == '%') {
buf[o] = '%';
o++;
buf[o] = '%';
} else {
buf[o] = j->label[i];
}
}
buf[o++] = ':';
buf[o++] = ' ';
if (err) {
sprintf(buf + o, "%s: %s", msg, strerror(err));
} else {
strcpy(buf + o, msg);
}
}
void
job_log_error(struct jobcb *j, int pri, const char *msg, ...)
{
char newmsg[10000];
va_list ap;
job_prep_log_msg(j, newmsg, msg, errno);
va_start(ap, msg);
vsyslog(pri, newmsg, ap);
va_end(ap);
}
void
job_log(struct jobcb *j, int pri, const char *msg, ...)
{
char newmsg[10000];
va_list ap;
job_prep_log_msg(j, newmsg, msg, 0);
va_start(ap, msg);
vsyslog(pri, newmsg, ap);
va_end(ap);
}
static void async_callback(void)
{
struct timespec timeout = { 0, 0 };
struct kevent kev;
switch (kevent(asynckq, NULL, 0, &kev, 1, &timeout)) {
case -1:
syslog(LOG_DEBUG, "kevent(): %m");
break;
case 1:
(*((kq_callback *)kev.udata))(kev.udata, &kev);
case 0:
break;
default:
syslog(LOG_DEBUG, "unexpected: kevent() returned something != 0, -1 or 1");
}
}
static void testfd_or_openfd(int fd, const char *path, int flags)
{
int tmpfd;
if (-1 != (tmpfd = dup(fd))) {
assumes(close(tmpfd) != -1);
} else {
if (-1 == (tmpfd = open(path, flags))) {
syslog(LOG_ERR, "open(\"%s\", ...): %m", path);
} else if (tmpfd != fd) {
assumes(dup2(tmpfd, fd) != -1);
assumes(close(tmpfd) != -1);
}
}
}
time_t
cronemu(int mon, int mday, int hour, int min)
{
struct tm workingtm;
time_t now;
now = time(NULL);
workingtm = *localtime(&now);
workingtm.tm_isdst = -1;
workingtm.tm_sec = 0;
workingtm.tm_min++;
while (!cronemu_mon(&workingtm, mon, mday, hour, min)) {
workingtm.tm_year++;
workingtm.tm_mon = 0;
workingtm.tm_mday = 1;
workingtm.tm_hour = 0;
workingtm.tm_min = 0;
mktime(&workingtm);
}
return mktime(&workingtm);
}
time_t
cronemu_wday(int wday, int hour, int min)
{
struct tm workingtm;
time_t now;
now = time(NULL);
workingtm = *localtime(&now);
workingtm.tm_isdst = -1;
workingtm.tm_sec = 0;
workingtm.tm_min++;
if (wday == 7)
wday = 0;
while (workingtm.tm_wday != wday || !cronemu_hour(&workingtm, hour, min)) {
workingtm.tm_mday++;
workingtm.tm_hour = 0;
workingtm.tm_min = 0;
cronemu_hour(&workingtm, hour, min);
mktime(&workingtm);
}
return mktime(&workingtm);
}
bool
cronemu_mon(struct tm *wtm, int mon, int mday, int hour, int min)
{
if (mon == -1) {
struct tm workingtm = *wtm;
int carrytest;
while (!cronemu_mday(&workingtm, mday, hour, min)) {
workingtm.tm_mon++;
workingtm.tm_mday = 1;
workingtm.tm_hour = 0;
workingtm.tm_min = 0;
carrytest = workingtm.tm_mon;
mktime(&workingtm);
if (carrytest != workingtm.tm_mon)
return false;
}
*wtm = workingtm;
return true;
}
if (mon < wtm->tm_mon)
return false;
if (mon > wtm->tm_mon) {
wtm->tm_mon = mon;
wtm->tm_mday = 1;
wtm->tm_hour = 0;
wtm->tm_min = 0;
}
return cronemu_mday(wtm, mday, hour, min);
}
bool
cronemu_mday(struct tm *wtm, int mday, int hour, int min)
{
if (mday == -1) {
struct tm workingtm = *wtm;
int carrytest;
while (!cronemu_hour(&workingtm, hour, min)) {
workingtm.tm_mday++;
workingtm.tm_hour = 0;
workingtm.tm_min = 0;
carrytest = workingtm.tm_mday;
mktime(&workingtm);
if (carrytest != workingtm.tm_mday)
return false;
}
*wtm = workingtm;
return true;
}
if (mday < wtm->tm_mday)
return false;
if (mday > wtm->tm_mday) {
wtm->tm_mday = mday;
wtm->tm_hour = 0;
wtm->tm_min = 0;
}
return cronemu_hour(wtm, hour, min);
}
bool
cronemu_hour(struct tm *wtm, int hour, int min)
{
if (hour == -1) {
struct tm workingtm = *wtm;
int carrytest;
while (!cronemu_min(&workingtm, min)) {
workingtm.tm_hour++;
workingtm.tm_min = 0;
carrytest = workingtm.tm_hour;
mktime(&workingtm);
if (carrytest != workingtm.tm_hour)
return false;
}
*wtm = workingtm;
return true;
}
if (hour < wtm->tm_hour)
return false;
if (hour > wtm->tm_hour) {
wtm->tm_hour = hour;
wtm->tm_min = 0;
}
return cronemu_min(wtm, min);
}
bool
cronemu_min(struct tm *wtm, int min)
{
if (min == -1)
return true;
if (min < wtm->tm_min)
return false;
if (min > wtm->tm_min) {
wtm->tm_min = min;
}
return true;
}
void
_log_launchd_bug(const char *path, unsigned int line, const char *test)
{
int saved_errno = errno;
const char *file = strrchr(path, '/');
if (!file) {
file = path;
} else {
file += 1;
}
syslog(LOG_NOTICE, "Bug: %s:%u:%u: %s", file, line, saved_errno, test);
}