int
dns_resolve (const char *q, const char qtype[2])
{
int r = 0;
char servers[64];
iopause_fd x[1];
struct taia stamp;
struct taia deadline;
if (dns_resolvconfip (servers) == -1)
return -1;
memset (&dns_resolve_tx, 0, sizeof (dns_resolve_tx));
r = dns_transmit_start (&dns_resolve_tx, servers, 1, q, qtype, "\0\0\0\0");
if (r == -1)
return -1;
for (;;)
{
taia_now (&stamp);
taia_uint (&deadline, 120);
taia_add (&deadline, &deadline, &stamp);
dns_transmit_io (&dns_resolve_tx, x, &deadline);
iopause (x, 1, &deadline, &stamp);
r = dns_transmit_get (&dns_resolve_tx, x, &stamp);
if (r == -1)
return -1;
if (r == 1)
return 0;
}
}
int timeoutconn6(int s,const char ip[16],uint16 port,unsigned int scope_id,unsigned int timeout)
{
struct taia now;
struct taia deadline;
iopause_fd x;
if (socket_connect6(s,ip,port,scope_id) == -1) {
if ((errno != EWOULDBLOCK) && (errno != EINPROGRESS)) return -1;
x.fd = s;
x.events = IOPAUSE_WRITE;
taia_now(&now);
taia_uint(&deadline,timeout);
taia_add(&deadline,&now,&deadline);
for (;;) {
taia_now(&now);
iopause(&x,1,&deadline,&now);
if (x.revents) break;
if (taia_less(&deadline,&now)) {
errno = ETIMEDOUT; /* note that connect attempt is continuing */
return -1;
}
}
if (!socket_connected(s)) return -1;
}
if (ndelay_off(s) == -1) return -1;
return 0;
}
int timeoutconn(int s,char ip[4],uint16 port,unsigned int timeout)
{
struct taia now;
struct taia deadline;
iopause_fd x;
if (socket_connect4(s,ip,port) == -1) {
if ((errno != error_wouldblock) && (errno != error_inprogress)) return -1;
x.fd = s;
x.events = IOPAUSE_WRITE;
taia_now(&now);
taia_uint(&deadline,timeout);
taia_add(&deadline,&now,&deadline);
for (;;) {
taia_now(&now);
iopause(&x,1,&deadline,&now);
if (x.revents) break;
if (taia_less(&deadline,&now)) {
errno = error_timeout; /* note that connect attempt is continuing */
return -1;
}
}
if (!socket_connected(s)) return -1;
}
if (ndelay_off(s) == -1) return -1;
return 0;
}
static int myread(int fd,char *buf,int len)
{
iopause_fd x;
x.fd = fd;
x.events = IOPAUSE_READ;
for (;;) {
taia_now(&now);
iopause(&x,1,&deadline,&now);
if (x.revents) break;
if (taia_less(&deadline,&now)) {
errno = error_timeout;
return -1;
}
}
return read(fd,buf,len);
}
int ssl_timeoutaccept(SSL *ssl,unsigned int timeout)
{
struct taia now;
struct taia deadline;
iopause_fd x;
int r;
int rfd;
int wfd;
taia_now(&now);
taia_uint(&deadline,timeout);
taia_add(&deadline,&now,&deadline);
rfd = SSL_get_fd(ssl); /* XXX */
wfd = SSL_get_fd(ssl); /* XXX */
SSL_set_accept_state(ssl);
for (;;) {
r = SSL_accept(ssl);
if (r == 1) return 0;
ssl_errno = SSL_get_error(ssl,r);
errno = error_proto;
if ((ssl_errno != SSL_ERROR_WANT_READ) && (ssl_errno != SSL_ERROR_WANT_WRITE))
return -1;
if (ssl_errno == SSL_ERROR_WANT_READ) {
x.events = IOPAUSE_READ;
x.fd = rfd;
if (x.fd == -1) return -1;
}
else {
x.events = IOPAUSE_WRITE;
x.fd = wfd;
if (x.fd == -1) return -1;
}
for (;;) {
taia_now(&now);
iopause(&x,1,&deadline,&now);
if (x.revents) break;
if (taia_less(&deadline,&now))
return -1;
}
}
}
int dns_resolve(const char *q,const char qtype[2])
{
struct taia stamp;
struct taia deadline;
char servers[256];
iopause_fd x[1];
int r;
if (dns_resolvconfip(servers) == -1) return -1;
if (dns_transmit_start(&dns_resolve_tx,servers,1,q,qtype,V6any) == -1) return -1;
for (;;) {
taia_now(&stamp);
taia_uint(&deadline,120);
taia_add(&deadline,&deadline,&stamp);
dns_transmit_io(&dns_resolve_tx,x,&deadline);
iopause(x,1,&deadline,&stamp);
r = dns_transmit_get(&dns_resolve_tx,x,&stamp);
if (r == -1) return -1;
if (r == 1) return 0;
}
}
int resolve(char *q,char qtype[2],char servers[256])
{
struct taia stamp;
struct taia deadline;
iopause_fd x[1];
int r;
if (dns_transmit_start(&tx,servers,0,q,qtype,V6any) == -1) return -1;
for (;;) {
taia_now(&stamp);
taia_uint(&deadline,120);
taia_add(&deadline,&deadline,&stamp);
dns_transmit_io(&tx,x,&deadline);
iopause(x,1,&deadline,&stamp);
r = dns_transmit_get(&tx,x,&stamp);
if (r == -1) return -1;
if (r == 1) break;
}
return 0;
}
int timeoutread(int t,int fd,char *buf,int len)
{
struct taia now;
struct taia deadline;
iopause_fd x;
taia_now(&now);
taia_uint(&deadline,t);
taia_add(&deadline,&now,&deadline);
x.fd = fd;
x.events = IOPAUSE_READ;
for (;;) {
taia_now(&now);
iopause(&x,1,&deadline,&now);
if (x.revents) break;
if (taia_less(&deadline,&now)) {
errno = ETIMEDOUT;
return -1;
}
}
return read(fd,buf,len);
}
int timeoutwrite(int t,int fd,const char *buf,int len)
{
struct taia now;
struct taia deadline;
iopause_fd x;
taia_now(&now);
taia_uint(&deadline,t);
taia_add(&deadline,&now,&deadline);
x.fd = fd;
x.events = IOPAUSE_WRITE;
for (;;) {
taia_now(&now);
iopause(&x,1,&deadline,&now);
if (x.revents) break;
if (taia_less(&deadline,&now)) {
errno = error_timeout;
return -1;
}
}
return write(fd,buf,len);
}
int resolve(char *q,char qtype[2],char ip[16])
{
struct taia start;
struct taia stamp;
struct taia deadline;
char servers[256];
iopause_fd x[1];
int r;
taia_now(&start);
byte_zero(servers,256);
byte_copy(servers,16,ip);
if (dns_transmit_start(&tx,servers,0,q,qtype,"\0\0\0\0") == -1) return -1;
for (;;) {
taia_now(&stamp);
taia_uint(&deadline,120);
taia_add(&deadline,&deadline,&stamp);
dns_transmit_io(&tx,x,&deadline);
iopause(x,1,&deadline,&stamp);
r = dns_transmit_get(&tx,x,&stamp);
if (r == -1) return -1;
if (r == 1) break;
}
taia_now(&stamp);
taia_sub(&stamp,&stamp,&start);
taia_uint(&deadline,1);
if (taia_less(&deadline,&stamp)) {
buffer_put(buffer_1,querystr.s,querystr.len);
buffer_puts(buffer_1,"ALERT:took more than 1 second\n");
}
return 0;
}
int timeoutaccept6(int s,char ip[16],uint16 *port,unsigned int timeout,uint32 *scope_id)
{
struct taia now;
struct taia deadline;
iopause_fd x;
x.fd = s;
x.events = IOPAUSE_READ;
taia_now(&now);
taia_uint(&deadline,timeout);
taia_add(&deadline,&now,&deadline);
for (;;) {
taia_now(&now);
iopause(&x,1,&deadline,&now);
if (x.revents) break;
if (taia_less(&deadline,&now)) {
errno = ETIMEDOUT; /* note that connect attempt is continuing */
return -1;
}
}
if (!socket_connected(s)) return -1;
if (ndelay_off(s) == -1) return -1;
return socket_accept6(s,ip,port,scope_id);
}
int main(int argc, char **argv)
{
struct stat s;
time_t mtime =0;
int wstat;
int curdir;
int pid;
struct taia deadline;
struct taia now;
struct taia stampcheck;
char ch;
int i;
progname =*argv++;
if (! argv || ! *argv) usage();
if (**argv == '-')
{
switch (*(*argv +1))
{
case 'P':
pgrp =1;
case '-':
++argv;
}
if (! argv || ! *argv) usage();
}
sig_catch(sig_term, s_term);
sig_catch(sig_hangup, s_hangup);
svdir =*argv++;
if (argv && *argv)
{
rplog =*argv;
if (setup_log() != 1)
{
rplog =0;
warn3x("log service disabled.", 0, 0);
}
}
if ((curdir =open_read(".")) == -1)
fatal("unable to open current directory", 0);
coe(curdir);
taia_now(&stampcheck);
for (;;)
{
/* collect children */
for (;;)
{
if ((pid =wait_nohang(&wstat)) <= 0) break;
for (i =0; i < svnum; i++)
{
if (pid == sv[i].pid)
{
/* runsv has gone */
sv[i].pid =0;
check =1;
break;
}
}
}
taia_now(&now);
if (now.sec.x < (stampcheck.sec.x -3))
{
/* time warp */
warn3x("time warp: resetting time stamp.", 0, 0);
taia_now(&stampcheck);
taia_now(&now);
if (rplog) taia_now(&stamplog);
}
if (taia_less(&now, &stampcheck) == 0)
{
/* wait at least a second */
taia_uint(&deadline, 1);
taia_add(&stampcheck, &now, &deadline);
if (stat(svdir, &s) != -1)
{
if (check || \
s.st_mtime != mtime || s.st_ino != ino || s.st_dev != dev)
{
/* svdir modified */
if (chdir(svdir) != -1)
{
mtime =s.st_mtime;
dev =s.st_dev;
ino =s.st_ino;
check =0;
if (now.sec.x <= (4611686018427387914ULL +(uint64)mtime))
sleep(1);
runsvdir();
while (fchdir(curdir) == -1)
{
warn("unable to change directory, pausing", 0);
sleep(5);
}
}
else
warn("unable to change directory to ", svdir);
}
}
else
warn("unable to stat ", svdir);
}
if (rplog)
if (taia_less(&now, &stamplog) == 0)
{
write(logpipe[1], ".", 1);
taia_uint(&deadline, 900);
taia_add(&stamplog, &now, &deadline);
}
/* half a second */
deadline.sec.x =0;
deadline.nano =500000000UL;
deadline.atto =0;
taia_add(&deadline, &now, &deadline);
sig_block(sig_child);
if (rplog)
iopause(io, 1, &deadline, &now);
else
iopause(0, 0, &deadline, &now);
sig_unblock(sig_child);
if (rplog && (io[0].revents | IOPAUSE_READ))
while (read(logpipe[0], &ch, 1) > 0)
if (ch)
{
for (i =6; i < rploglen; i++)
rplog[i -1] =rplog[i];
rplog[rploglen -1] =ch;
}
switch(exitsoon)
{
case 1:
_exit(0);
case 2:
for (i =0; i < svnum; i++) if (sv[i].pid) kill(sv[i].pid, SIGTERM);
_exit(111);
}
} /* for (;;) */
/* not reached */
_exit(0);
}
int
main (int argc, char *argv[])
{
time_t t = 0;
char *x = NULL;
struct sigaction sa;
iopause_fd *iop = NULL;
int i = 0, n = 0, *udp53 = NULL;
prog = strdup ((x = strrchr (argv[0], '/')) != NULL ? x + 1 : argv[0]);
sa.sa_handler = handle_term;
sigaction (SIGINT, &sa, NULL);
sigaction (SIGTERM, &sa, NULL);
sa.sa_handler = SIG_IGN;
sigaction (SIGPIPE, &sa, NULL);
i = check_option (argc, argv);
argc -= i;
argv += i;
if (mode & DAEMON)
{
i = fork ();
if (i == -1)
err (-1, "could not fork a daemon process");
if (i > 0)
return 0;
}
time (&t);
memset (buf, 0, sizeof (buf));
strftime (buf, sizeof (buf), "%b-%d %Y %T %Z", localtime (&t));
warnx ("version %s: starting: %s\n", VERSION, buf);
set_timezone ();
if (debug_level)
warnx ("TIMEZONE: %s", env_get ("TZ"));
initialize ();
if (!debug_level)
if ((x = env_get ("DEBUG_LEVEL")))
debug_level = atol (x);
warnx ("DEBUG_LEVEL set to `%d'", debug_level);
if ((x = env_get ("DATALIMIT")))
{
struct rlimit r;
unsigned long dlimit = atol (x);
if (getrlimit (RLIMIT_DATA, &r) != 0)
err (-1, "could not get resource RLIMIT_DATA");
r.rlim_cur = (dlimit <= r.rlim_max) ? dlimit : r.rlim_max;
if (setrlimit (RLIMIT_DATA, &r) != 0)
err (-1, "could not set resource RLIMIT_DATA");
if (debug_level)
warnx ("DATALIMIT set to `%ld' bytes", r.rlim_cur);
}
if (!(x = env_get ("IP")))
err (-1, "$IP not set");
for (i = 0; (unsigned)i < strlen (x); i++)
n = (x[i] == ',') ? n+1 : n;
if (!(udp53 = calloc (n+1, sizeof (int))))
err (-1, "could not allocate enough memory for udp53");
if (!(iop = calloc (n+1, sizeof (iopause_fd))))
err (-1, "could not allocate enough memory for iop");
i = n = 0;
while (x[i])
{
unsigned int l = 0;
if (!(l = ip4_scan(x+i, ip)))
errx (-1, "could not parse IP address `%s'", x + i);
udp53[n] = socket_udp();
if (udp53[n] == -1)
errx (-1, "could not open UDP socket");
if (socket_bind4_reuse (udp53[n], ip, server_port) == -1)
errx (-1, "could not bind UDP socket");
ndelay_off (udp53[n]);
socket_tryreservein (udp53[n], 65536);
iop[n].fd = udp53[n];
iop[n].events = IOPAUSE_READ;
n++;
i += (x[i + l] == ',') ? l + 1 : l;
}
droproot ();
while (1)
{
struct taia stamp;
struct in_addr odst; /* original destination IP */
struct taia deadline;
taia_now (&stamp);
taia_uint (&deadline, 300);
taia_add (&deadline, &deadline, &stamp);
iopause (iop, n, &deadline, &stamp);
for (i = 0; i < n; i++)
{
if (!iop[i].revents)
continue;
len = socket_recv4 (udp53[i], buf, sizeof (buf), ip, &port, &odst);
if (len < 0)
continue;
if (!doit ())
continue;
if (response_len > 512)
response_tc ();
/* may block for buffer space; if it fails, too bad */
len = socket_send4 (udp53[i], response,
response_len, ip, port, &odst);
if (len < 0)
continue;
if (debug_level > 1)
log_querydone(qnum, response, response_len);
}
}
return 0;
}
static void
doit (void)
{
struct taia stamp;
struct taia deadline;
int j = 0, r = 0, iolen = 0;
for (;;)
{
taia_now (&stamp);
taia_uint (&deadline, 120);
taia_add (&deadline, &deadline, &stamp);
iolen = 0;
udp53io = io + iolen++;
udp53io->fd = udp53;
udp53io->events = IOPAUSE_READ;
tcp53io = io + iolen++;
tcp53io->fd = tcp53;
tcp53io->events = IOPAUSE_READ;
for (j = 0; j < MAXUDP; ++j)
{
if (u[j].active)
{
u[j].io = io + iolen++;
query_io (&u[j].q, u[j].io, &deadline);
}
}
for (j = 0; j < MAXTCP; ++j)
{
if (t[j].active)
{
t[j].io = io + iolen++;
if (t[j].state == 0)
query_io (&t[j].q, t[j].io, &deadline);
else
{
if (taia_less (&t[j].timeout, &deadline))
deadline = t[j].timeout;
t[j].io->fd = t[j].tcp;
t[j].io->events = (t[j].state > 0) ?
IOPAUSE_READ : IOPAUSE_WRITE;
}
}
}
iopause (io, iolen, &deadline, &stamp);
for (j = 0; j < MAXUDP; ++j)
{
if (u[j].active)
{
r = query_get (&u[j].q, u[j].io, &stamp);
if (r == -1)
u_drop (j);
if (r == 1)
u_respond (j);
}
}
for (j = 0; j < MAXTCP; ++j)
{
if (t[j].active)
{
if (t[j].io->revents)
t_timeout (j);
if (t[j].state == 0)
{
r = query_get (&t[j].q, t[j].io, &stamp);
if (r == -1)
t_drop (j);
if (r == 1)
t_respond (j);
}
else
if (t[j].io->revents || taia_less (&t[j].timeout, &stamp))
t_rw (j);
}
}
if (udp53io && udp53io->revents)
u_new();
if (tcp53io && tcp53io->revents)
t_new();
}
}
void doit(int fdleft,int fdright) /* copy 0 -> fdleft, copy fdright -> 1 */
{
struct taia stamp;
struct taia deadline;
iopause_fd x[4];
int xlen;
iopause_fd *io0;
iopause_fd *ioleft;
iopause_fd *io1;
iopause_fd *ioright;
int r;
for (;;) {
xlen = 0;
io0 = 0;
if (leftstatus == 0) {
io0 = &x[xlen++];
io0->fd = 0;
io0->events = IOPAUSE_READ;
}
ioleft = 0;
if (leftstatus == 1) {
ioleft = &x[xlen++];
ioleft->fd = fdleft;
ioleft->events = IOPAUSE_WRITE;
}
ioright = 0;
if (rightstatus == 0) {
ioright = &x[xlen++];
ioright->fd = fdright;
ioright->events = IOPAUSE_READ;
}
io1 = 0;
if (rightstatus == 1) {
io1 = &x[xlen++];
io1->fd = 1;
io1->events = IOPAUSE_WRITE;
}
taia_now(&stamp);
taia_uint(&deadline,3600);
taia_add(&deadline,&stamp,&deadline);
iopause(x,xlen,&deadline,&stamp);
if (io0 && io0->revents) {
r = read(0,leftbuf,sizeof leftbuf);
if (r <= 0) {
leftstatus = -1;
close(fdleft);
buffer_puts(&ssrecord,pid);
buffer_puts(&ssrecord," < [EOF]\n");
buffer_flush(&ssrecord);
}
else {
leftstatus = 1; leftpos = 0; leftlen = r;
record(leftbuf,r," < ");
}
}
if (ioleft && ioleft->revents) {
r = write(fdleft,leftbuf + leftpos,leftlen - leftpos);
if (r == -1) break;
leftpos += r;
if (leftpos == leftlen) leftstatus = 0;
}
if (ioright && ioright->revents) {
r = read(fdright,rightbuf,sizeof rightbuf);
if (r <= 0) {
buffer_puts(&ssrecord,pid);
buffer_puts(&ssrecord," > [EOF]\n");
buffer_flush(&ssrecord);
break;
}
rightstatus = 1; rightpos = 0; rightlen = r;
record(rightbuf,r," > ");
}
if (io1 && io1->revents) {
r = write(1,rightbuf + rightpos,rightlen - rightpos);
if (r == -1) break;
rightpos += r;
if (rightpos == rightlen) rightstatus = 0;
}
}
_exit(0);
}
int main (void)
{
PROG = "s6-ftrigrd" ;
if (ndelay_on(0) < 0) strerr_diefu2sys(111, "ndelay_on ", "0") ;
if (ndelay_on(1) < 0) strerr_diefu2sys(111, "ndelay_on ", "1") ;
if (sig_ignore(SIGPIPE) < 0) strerr_diefu1sys(111, "ignore SIGPIPE") ;
{
tain_t deadline ;
tain_now_g() ;
tain_addsec_g(&deadline, 2) ;
if (!skaclient_server_01x_init_g(FTRIGR_BANNER1, FTRIGR_BANNER1_LEN, FTRIGR_BANNER2, FTRIGR_BANNER2_LEN, &deadline))
strerr_diefu1sys(111, "sync with client") ;
}
for (;;)
{
iopause_fd x[3 + n] ;
unsigned int i = 0 ;
x[0].fd = 0 ; x[0].events = IOPAUSE_EXCEPT | IOPAUSE_READ ;
x[1].fd = 1 ; x[1].events = IOPAUSE_EXCEPT | (unixmessage_sender_isempty(unixmessage_sender_1) ? 0 : IOPAUSE_WRITE) ;
x[2].fd = unixmessage_sender_fd(unixmessage_sender_x) ;
x[2].events = IOPAUSE_EXCEPT | (unixmessage_sender_isempty(unixmessage_sender_x) ? 0 : IOPAUSE_WRITE) ;
for (; i < n ; i++)
{
a[i].xindex = 3 + i ;
x[3+i].fd = a[i].trig.fd ;
x[3+i].events = IOPAUSE_READ ;
}
if (iopause(x, 3 + n, 0, 0) < 0)
{
cleanup() ;
strerr_diefu1sys(111, "iopause") ;
}
/* client closed */
if ((x[0].revents | x[1].revents) & IOPAUSE_EXCEPT) break ;
/* client is reading */
if (x[1].revents & IOPAUSE_WRITE)
if (!unixmessage_sender_flush(unixmessage_sender_1) && !error_isagain(errno))
{
cleanup() ;
strerr_diefu1sys(111, "flush stdout") ;
}
if (x[2].revents & IOPAUSE_WRITE)
if (!unixmessage_sender_flush(unixmessage_sender_x) && !error_isagain(errno))
{
cleanup() ;
strerr_diefu1sys(111, "flush asyncout") ;
}
/* scan listening ftrigs */
for (i = 0 ; i < n ; i++)
{
if (x[a[i].xindex].revents & IOPAUSE_READ)
if (!ftrigio_read(a+i)) remove(i--) ;
}
/* client is writing */
if (!unixmessage_receiver_isempty(unixmessage_receiver_0) || x[0].revents & IOPAUSE_READ)
{
if (unixmessage_handle(unixmessage_receiver_0, &parse_protocol, 0) < 0)
{
if (errno == EPIPE) break ; /* normal exit */
cleanup() ;
strerr_diefu1sys(111, "handle messages from client") ;
}
}
}
cleanup() ;
return 0 ;
}
static void doit()
{
iopause_fd x[2];
struct taia deadline;
struct taia stamp;
int wstat;
long int time_cmp = 0;
int r;
char ch;
char warn_message[2048];
int coredumped = 0;
char restart_cmd[2048];
announce();
x[0].fd = selfpipe[0];
x[0].events = IOPAUSE_READ;
x[1].fd = fdcontrol;
x[1].events = IOPAUSE_READ;
while (1)
{
if (flagexit && !pid)
break;
taia_now(&stamp);
taia_uint(&deadline, 3600);
taia_add(&deadline, &stamp, &deadline);
sig_unblock(sig_child);
iopause(x, 2, &deadline, &stamp);
sig_block(sig_child);
while (read(selfpipe[0], &ch, 1) == 1);
while (1)
{
//waitpid(-1,&wstat,WNOHANG);WNOHANG : return immediately if no child has exited
r = wait_nohang(&wstat);
//r==0 if one or more child(ren) exit(s) but have not yet changed state
if (!r)
break;
//r == -1 && errno == error_intr means waitpid is interrupted by a signal, we should call waitpid again.
//here is not necessary cause we call waitpid with a WNOHANG argument.
if (r == -1 && errno != error_intr)
break;
if (r == pid)
{
pid = 0;
pidchange();
announce();
time_now = time((time_t *)0);
if(time_old)
{
time_cmp = time_now - time_old;
if(time_cmp >= time_alarm) //cmp
{
num = 0;
}
time_old = time_now;
}
else
{
time_cmp = 0;
time_old = time_now;
}
if (0 != restart_sh[0])
{
if (num == INT_MAX)
num = 0;
num++;
if (snprintf(restart_cmd, sizeof(restart_cmd), "%s %d", restart_sh, num) > 1)
{
system(restart_cmd);
write_log(fdlog, NOTICE, "restart_cmd: ", restart_cmd, " is called.\n");
}
}
else
{
if (WCOREDUMP(wstat))
{
have_coredumped++;
coredumped = 1;
}
bzero(warn_message, 2048);
create_warn_message(warn_message, coredumped);
write_log(fdlog, NOTICE, "service exited", coredumped ? " with coredump" : "", "!\n");
coredumped = 0;
if (!closealarm && alarm_interval > 0 && have_tried++ == 0)
{
alarm(alarm_interval);
do_alarm(warn_message);
}
if (flagexit || (alarm_interval > 0 && have_tried > max_tries && max_tries > 0) ||
(alarm_interval > 0 && have_coredumped > max_tries_if_coredumped && max_tries_if_coredumped > 0))
{
write_log(fdlog, NOTICE, "supervise refused to restart ", service,
" any more and exited itself!\n");
alarm(0);
return;
}
}
if (flagwant && flagwantup)
{
write_log(fdlog, NOTICE, "supervise is trying to restart ", service, "...\n");
trystart();
}
break;
}
}
if (read(fdcontrol, &ch, 1) != 1)
continue;
switch(ch)
{
// -s: Silent. Do not alarm any more.
case 's':
closealarm = 1;
announce();
break;
case 'n':
closealarm = 0;
announce();
break;
case 'r':
parse_conf();
break;
// -d: Down. If the service is running, send it a TERM signal and then a CONT signal.
// After it stops, do not restart it.
case 'd':
flagwant = 1;
flagwantup = 0;
if (pid) { kill(pid, SIGTERM); kill(pid, SIGCONT); flagpaused = 0; }
announce();
break;
// -u: Up. If the service is not running, start it. If the service stops, restart it.
case 'u':
flagwant = 1;
flagwantup = 1;
announce();
if (!pid) trystart();
break;
// -o: Once. If the service is not running, start it. Do not restart it if it stops.
case 'o':
flagwant = 0;
announce();
if (!pid) trystart();
break;
// -a: Alarm. Send the service an ALRM signal.
case 'a':
if (pid) kill(pid, SIGALRM);
break;
// -h: Hangup. Send the service a HUP signal.
case 'h':
if (pid) kill(pid, SIGHUP);
break;
// -k: Kill. Send the service a KILL signal.
case 'k':
if (pid) kill(pid, SIGKILL);
break;
//* -t: Terminate. Send the service a TERM signal.
case 't':
if (pid) kill(pid, SIGTERM);
break;
// -i: Interrupt. Send the service an INT signal.
case 'i':
if (pid) kill(pid, SIGINT);
break;
// -p: Pause. Send the service a STOP signal.
case 'p':
flagpaused = 1;
announce();
if (pid) kill(pid, SIGSTOP);
break;
// -c: Continue. Send the service a CONT signal.
case 'c':
flagpaused = 0;
announce();
if (pid) kill(pid, SIGCONT);
break;
// -x: Exit. supervise will exit as soon as the service is down. If you use this option on a
//stable system, you're doing something wrong; supervise is designed to run forever.
case 'x':
flagexit = 1;
announce();
break;
} //end switch
} //end while
}
int main(int argc,char **argv)
{
struct taia stamp;
struct taia deadline;
int opt;
unsigned long u;
int i;
int j;
int r;
while ((opt = getopt(argc,argv,"c:l:")) != opteof)
switch(opt) {
case 'c':
scan_ulong(optarg,&u);
if (u < 1) u = 1;
if (u > 1000) u = 1000;
maxactive = u;
break;
case 'l':
scan_ulong(optarg,&u);
if (u < 1) u = 1;
if (u > 1000000) u = 1000000;
xmax = u;
break;
default:
strerr_die1x(111,"dnsfilter: usage: dnsfilter [ -c concurrency ] [ -l lines ]");
}
x = (struct line *) alloc(xmax * sizeof(struct line));
if (!x) nomem();
byte_zero(x,xmax * sizeof(struct line));
io = (iopause_fd *) alloc((xmax + 1) * sizeof(iopause_fd));
if (!io) nomem();
if (!stralloc_copys(&partial,"")) nomem();
while (flag0 || inbuflen || partial.len || xnum) {
taia_now(&stamp);
taia_uint(&deadline,120);
taia_add(&deadline,&deadline,&stamp);
iolen = 0;
if (flag0)
if (inbuflen < sizeof inbuf) {
inio = io + iolen++;
inio->fd = 0;
inio->events = IOPAUSE_READ;
}
for (i = 0;i < xnum;++i)
if (x[i].flagactive) {
x[i].io = io + iolen++;
dns_transmit_io(&x[i].dt,x[i].io,&deadline);
}
iopause(io,iolen,&deadline,&stamp);
if (flag0)
if (inbuflen < sizeof inbuf)
if (inio->revents) {
r = read(0,inbuf + inbuflen,(sizeof inbuf) - inbuflen);
if (r <= 0)
flag0 = 0;
else
inbuflen += r;
}
for (i = 0;i < xnum;++i)
if (x[i].flagactive) {
r = dns_transmit_get(&x[i].dt,x[i].io,&stamp);
if (r == -1) {
errout(i);
x[i].flagactive = 0;
--numactive;
}
else if (r == 1) {
if (dns_name_packet(&x[i].middle,x[i].dt.packet,x[i].dt.packetlen) == -1)
errout(i);
if (x[i].middle.len)
if (!stralloc_cats(&x[i].left,"=")) nomem();
x[i].flagactive = 0;
--numactive;
}
}
for (;;) {
if (xnum && !x[0].flagactive) {
buffer_put(buffer_1,x[0].left.s,x[0].left.len);
buffer_put(buffer_1,x[0].middle.s,x[0].middle.len);
buffer_put(buffer_1,x[0].right.s,x[0].right.len);
buffer_flush(buffer_1);
--xnum;
tmp = x[0];
for (i = 0;i < xnum;++i) x[i] = x[i + 1];
x[xnum] = tmp;
continue;
}
if ((xnum < xmax) && (numactive < maxactive)) {
i = byte_chr(inbuf,inbuflen,'\n');
if (inbuflen && (i == inbuflen)) {
if (!stralloc_catb(&partial,inbuf,inbuflen)) nomem();
inbuflen = 0;
continue;
}
if ((i < inbuflen) || (!flag0 && partial.len)) {
if (i < inbuflen) ++i;
if (!stralloc_catb(&partial,inbuf,i)) nomem();
inbuflen -= i;
for (j = 0;j < inbuflen;++j) inbuf[j] = inbuf[j + i];
if (partial.len) {
i = byte_chr(partial.s,partial.len,'\n');
i = byte_chr(partial.s,i,'\t');
i = byte_chr(partial.s,i,' ');
if (!stralloc_copyb(&x[xnum].left,partial.s,i)) nomem();
if (!stralloc_copys(&x[xnum].middle,"")) nomem();
if (!stralloc_copyb(&x[xnum].right,partial.s + i,partial.len - i)) nomem();
x[xnum].flagactive = 0;
partial.len = i;
if (!stralloc_0(&partial)) nomem();
if (ip4_scan(partial.s,ip)) {
dns_name4_domain(name,ip);
if (dns_resolvconfip(servers) == -1)
strerr_die2sys(111,FATAL,"unable to read /etc/resolv.conf: ");
if (dns_transmit_start(&x[xnum].dt,servers,1,name,DNS_T_PTR,"\0\0\0\0") == -1)
errout(xnum);
else {
x[xnum].flagactive = 1;
++numactive;
}
}
++xnum;
}
partial.len = 0;
continue;
}
}
break;
}
}
_exit(0);
}
int main (void)
{
stralloc indata = STRALLOC_ZERO ;
unsigned int instate = 0 ;
PROG = "s6-ftrigrd" ;
if (ndelay_on(0) < 0) strerr_diefu2sys(111, "ndelay_on ", "0") ;
if (ndelay_on(1) < 0) strerr_diefu2sys(111, "ndelay_on ", "1") ;
if (sig_ignore(SIGPIPE) < 0) strerr_diefu1sys(111, "ignore SIGPIPE") ;
{
struct taia deadline, stamp ;
taia_now(&stamp) ;
taia_addsec(&deadline, &stamp, 2) ;
if (!skaserver2_sync(&asyncout, FTRIGR_BANNER1, FTRIGR_BANNER1_LEN, FTRIGR_BANNER2, FTRIGR_BANNER2_LEN, &deadline, &stamp))
strerr_diefu1sys(111, "sync with client") ;
}
for (;;)
{
register unsigned int n = genalloc_len(ftrigio_t, &a) ;
iopause_fd x[3 + n] ;
unsigned int i = 0 ;
int r ;
x[0].fd = 0 ; x[0].events = IOPAUSE_EXCEPT | IOPAUSE_READ ;
x[1].fd = 1 ; x[1].events = IOPAUSE_EXCEPT | (bufalloc_len(bufalloc_1) ? IOPAUSE_WRITE : 0) ;
x[2].fd = bufalloc_fd(&asyncout) ; x[2].events = IOPAUSE_EXCEPT | (bufalloc_len(&asyncout) ? IOPAUSE_WRITE : 0) ;
for (; i < n ; i++)
{
register ftrigio_t_ref p = genalloc_s(ftrigio_t, &a) + i ;
p->xindex = 3 + i ;
x[3+i].fd = p->trig.fd ;
x[3+i].events = IOPAUSE_READ ;
}
r = iopause(x, 3 + n, 0, 0) ;
if (r < 0)
{
cleanup() ;
strerr_diefu1sys(111, "iopause") ;
}
/* client closed => exit */
if ((x[0].revents | x[1].revents) & IOPAUSE_EXCEPT) break ;
/* client reading => flush pending data */
if (x[1].revents & IOPAUSE_WRITE)
if ((bufalloc_flush(bufalloc_1) == -1) && !error_isagain(errno))
{
cleanup() ;
strerr_diefu1sys(111, "flush stdout") ;
}
if (x[2].revents & IOPAUSE_WRITE)
if ((bufalloc_flush(&asyncout) == -1) && !error_isagain(errno))
{
cleanup() ;
strerr_diefu1sys(111, "flush asyncout") ;
}
/* scan listening ftrigs */
for (i = 0 ; i < genalloc_len(ftrigio_t, &a) ; i++)
{
register ftrigio_t_ref p = genalloc_s(ftrigio_t, &a) + i ;
if (x[p->xindex].revents & IOPAUSE_READ)
{
char c ;
register int r = sanitize_read(fd_read(p->trig.fd, &c, 1)) ;
if (!r) continue ;
if (r < 0)
{
trig(p->id, 'd', errno) ;
remove(i--) ;
}
else if (!sredfa_feed(p->re, &p->dfastate, c))
{
trig(p->id, 'd', ENOEXEC) ;
remove(i--) ;
}
else if (p->dfastate & SREDFA_ACCEPT)
{
trig(p->id, '!', c) ;
if (p->options & FTRIGR_REPEAT)
p->dfastate = SREDFA_START ;
else remove(i--) ;
}
}
}
/* client writing => get data and parse it */
if (buffer_len(buffer_0small) || x[0].revents & IOPAUSE_READ)
{
int r ;
for (;;)
{
uint16 id ;
r = sanitize_read(netstring_get(buffer_0small, &indata, &instate)) ;
if (r <= 0) break ;
if (indata.len < 3)
{
cleanup() ;
strerr_dief1x(100, "invalid client request") ;
}
uint16_unpack_big(indata.s, &id) ;
switch (indata.s[2]) /* protocol parsing */
{
case 'U' : /* unsubscribe */
{
register unsigned int i = genalloc_len(ftrigio_t, &a) ;
for (; i ; i--) if (genalloc_s(ftrigio_t, &a)[i-1].id == id) break ;
if (i) remove(i-1) ;
answer(0) ;
break ;
}
case 'L' : /* subscribe to path and match re */
{
ftrigio_t f = FTRIGIO_ZERO ;
uint32 pathlen, relen ;
if (indata.len < 18)
{
answer(EPROTO) ;
break ;
}
uint32_unpack_big(indata.s + 3, &f.options) ;
uint32_unpack_big(indata.s + 7, &pathlen) ;
uint32_unpack_big(indata.s + 11, &relen) ;
if (((pathlen + relen + 16) != indata.len) || indata.s[15 + pathlen])
{
answer(EPROTO) ;
break ;
}
f.id = id ;
if (!stralloc_0(&indata))
{
answer(errno) ;
break ;
}
f.re = sredfa_new() ;
if (!f.re)
{
answer(errno) ;
break ;
}
if (!sredfa_from_regexp(f.re, indata.s + 16 + pathlen)
|| !ftrig1_make(&f.trig, indata.s + 15))
{
sredfa_delete(f.re) ;
answer(errno) ;
break ;
}
if (!genalloc_append(ftrigio_t, &a, &f))
{
ftrigio_deepfree(&f) ;
answer(errno) ;
break ;
}
answer(0) ;
break ;
}
default :
{
cleanup() ;
strerr_dief1x(100, "invalid client request") ;
}
}
indata.len = 0 ;
} /* end loop: parse input from client */
if (r < 0)
{
if (errno == EPIPE) break ; /* client closed */
else
{
cleanup() ;
strerr_diefu1sys(111, "read a netstring") ;
}
}
} /* end if: stuff to read on stdin */
} /* end loop: main iopause */
cleanup() ;
return 0 ;
}
void doio(void) {
iopause_fd x[2];
struct taia deadline;
struct taia now;
struct taia timeout;
if (! stralloc_ready(&encinbuf, bufsizein)) die_nomem();
encin.buf =encin.start =encin.end =encinbuf.s; encin.size =bufsizein;
if (! stralloc_ready(&decinbuf, bufsizein)) die_nomem();
decin.buf =decin.start =decin.end =decinbuf.s; decin.size =bufsizein;
if (! stralloc_ready(&encoubuf, bufsizeou)) die_nomem();
encou.buf =encou.start =encou.end =encoubuf.s; encou.size =bufsizeou;
if (! stralloc_ready(&decoubuf, bufsizeou)) die_nomem();
decou.buf =decou.start =decou.end =decoubuf.s; decou.size =bufsizeou;
if (client) {
rc =matrixSslEncodeClientHello(ssl, &decou, 0);
if (rc != 0) fatalx("unable to encode client hello");
if (write(fdstdou, decou.start, decou.end -decou.start)
!= (decou.end -decou.start))
fatal("unable to send client hello");
if (verbose > 2) info("sending client hello");
if (verbose > 2) infou("write bytes: ", decou.end -decou.start);
bytesou +=decou.end -decou.start;
decou.start =decou.end =decou.buf;
}
taia_now(&now);
taia_uint(&timeout, handshake_timeout);
taia_add(&timeout, &now, &timeout);
for (;;) {
iopause_fd *xx =x;
int l =2;
x[0].fd =encpipe[0];
x[0].events =IOPAUSE_READ;
x[0].revents =0;
x[1].fd =fdstdin;
x[1].events =IOPAUSE_READ;
x[1].revents =0;
if ((x[0].fd == -1) || handshake) { --l; ++xx; }
if (x[1].fd == -1) --l;
if (! l) return;
taia_now(&now);
if (handshake) {
if (taia_less(&timeout, &now)) {
if (verbose) info("ssl handshake timeout, exit.");
return;
}
deadline.sec =timeout.sec;
deadline.nano =timeout.nano;
deadline.atto =timeout.atto;
}
else {
taia_uint(&deadline, 30);
taia_add(&deadline, &now, &deadline);
}
iopause(xx, l, &deadline, &now);
if (x[0].revents) encode();
if (x[1].revents) decode();
}
}
void doit(void)
{
iopause_fd x[2];
struct taia deadline;
struct taia stamp;
int wstat;
int r;
char ch;
announce();
for (;;) {
if (flagexit && !pid) return;
sig_unblock(sig_child);
x[0].fd = selfpipe[0];
x[0].events = IOPAUSE_READ;
x[1].fd = fdcontrol;
x[1].events = IOPAUSE_READ;
taia_now(&stamp);
taia_uint(&deadline,3600);
taia_add(&deadline,&stamp,&deadline);
iopause(x,2,&deadline,&stamp);
sig_block(sig_child);
while (read(selfpipe[0],&ch,1) == 1)
;
for (;;) {
r = wait_nohang(&wstat);
if (!r) break;
if ((r == -1) && (errno != error_intr)) break;
if (r == pid) {
pid = 0;
pidchange();
announce();
if (flagexit) return;
if (flagwant && flagwantup) trystart();
break;
}
}
if (read(fdcontrol,&ch,1) == 1)
switch(ch) {
case 'd':
flagwant = 1;
flagwantup = 0;
if (pid) { kill(pid,SIGTERM); kill(pid,SIGCONT); flagpaused = 0; }
announce();
break;
case 'u':
flagwant = 1;
flagwantup = 1;
announce();
if (!pid) trystart();
break;
case 'o':
flagwant = 0;
announce();
if (!pid) trystart();
break;
case 'a':
if (pid) kill(pid,SIGALRM);
break;
case 'h':
if (pid) kill(pid,SIGHUP);
break;
case 'k':
if (pid) kill(pid,SIGKILL);
break;
case 't':
if (pid) kill(pid,SIGTERM);
break;
case 'i':
if (pid) kill(pid,SIGINT);
break;
case 'p':
flagpaused = 1;
announce();
if (pid) kill(pid,SIGSTOP);
break;
case 'c':
flagpaused = 0;
announce();
if (pid) kill(pid,SIGCONT);
break;
case 'x':
flagexit = 1;
announce();
break;
}
}
}
void doit(int fdleft,int fdright)
{
struct taia stamp;
struct taia deadline;
iopause_fd x[4];
int xlen;
iopause_fd *io0;
iopause_fd *ioleft;
iopause_fd *io1;
iopause_fd *ioright;
int r;
int i;
char ch;
for (;;) {
xlen = 0;
io0 = 0;
if (leftstatus == 0) {
io0 = &x[xlen++];
io0->fd = 0;
io0->events = IOPAUSE_READ;
}
ioleft = 0;
if (leftstatus == 1) {
ioleft = &x[xlen++];
ioleft->fd = fdleft;
ioleft->events = IOPAUSE_WRITE;
}
ioright = 0;
if (rightstatus == 0) {
ioright = &x[xlen++];
ioright->fd = fdright;
ioright->events = IOPAUSE_READ;
}
io1 = 0;
if (rightstatus == 1) {
io1 = &x[xlen++];
io1->fd = 1;
io1->events = IOPAUSE_WRITE;
}
taia_now(&stamp);
taia_uint(&deadline,3600);
taia_add(&deadline,&stamp,&deadline);
iopause(x,xlen,&deadline,&stamp);
if (io0 && io0->revents) {
r = read(0,prebuf,sizeof prebuf);
if (r <= 0) {
leftstatus = -1;
close(fdleft);
}
else {
leftstatus = 1;
leftpos = 0;
leftlen = 0;
for (i = 0;i < r;++i) {
ch = prebuf[i];
if (ch == '\n')
if (!leftflagcr)
leftbuf[leftlen++] = '\r';
leftbuf[leftlen++] = ch;
leftflagcr = (ch == '\r');
}
}
}
if (ioleft && ioleft->revents) {
r = write(fdleft,leftbuf + leftpos,leftlen - leftpos);
if (r == -1) break;
leftpos += r;
if (leftpos == leftlen) leftstatus = 0;
}
if (ioright && ioright->revents) {
r = read(fdright,prebuf,sizeof prebuf);
if (r <= 0) break;
rightstatus = 1;
rightpos = 0;
rightlen = 0;
for (i = 0;i < r;++i) {
ch = prebuf[i];
if (ch == '\n')
if (!rightflagcr)
rightbuf[rightlen++] = '\r';
rightbuf[rightlen++] = ch;
rightflagcr = (ch == '\r');
}
}
if (io1 && io1->revents) {
r = write(1,rightbuf + rightpos,rightlen - rightpos);
if (r == -1) break;
rightpos += r;
if (rightpos == rightlen) rightstatus = 0;
}
}
_exit(0);
}
int main(int argc,char * const *argv) {
int opt;
const char *path;
mode_t m;
iopause_fd x;
struct taia deadline;
struct taia stamp;
int pid = 0;
char ch;
int wstat;
while ((opt = getopt(argc,argv,"wWdDt:")) != opteof)
switch(opt) {
case 't': scan_uint(optarg,&timeout); break;
case 'w': flagwait = 1; break;
case 'W': flagwait = 0; break;
case 'd': flagdelete = 1; break;
case 'D': flagdelete = 0; break;
default: usage();
}
argv += optind;
path = *argv++;
if (!path) usage();
if (flagdelete) {
m = umask(0);
unlink(path);
fifo_make(path,0666);
umask(m);
}
fdr = open_read(path);
if (fdr == -1)
strerr_die4sys(111,FATAL,"cannot read ",path,": ");
ndelay_on(fdr);
fdw = open_write(path);
if (fdw == -1)
strerr_die4sys(111,FATAL,"cannot write ",path,": ");
if (*argv) {
pid = fork();
switch (pid) {
case 0:
close(fdr); close(fdw);
pathexec(argv);
strerr_die4sys(111,FATAL,"cannot run ",*argv,": ");
case -1:
strerr_die4sys(111,FATAL,"cannot fork ",*argv,": ");
break;
default:
break;
}
}
else
flagwait = 0;
x.fd = fdr;
x.events = IOPAUSE_READ;
taia_now(&stamp);
taia_uint(&deadline,timeout);
taia_add(&deadline,&stamp,&deadline);
for (;;) {
taia_now(&stamp);
iopause(&x,1,&deadline,&stamp);
if (x.revents) {
waiting = 0;
break;
}
if (taia_less(&deadline,&stamp)) {
waiting = 99;
break;
}
}
if (!waiting)
if (read(fdr,&ch,1) != 1)
waiting = 0;
if (flagwait)
if (wait_pid(&wstat,pid) != pid)
strerr_die2x(111,FATAL,"cannot reap child process");
_exit(waiting);
}