int
main(int argc, char **argv)
{
int debug_flag = 0, log_level = SYSLOG_LEVEL_INFO;
int opt, fopt_count = 0, j;
char *tname, *cp, line[NI_MAXHOST];
FILE *fp;
u_long linenum;
extern int optind;
extern char *optarg;
__progname = ssh_get_progname(argv[0]);
seed_rng();
TAILQ_INIT(&tq);
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
sanitise_stdfd();
if (argc <= 1)
usage();
while ((opt = getopt(argc, argv, "Hv46p:T:t:f:")) != -1) {
switch (opt) {
case 'H':
hash_hosts = 1;
break;
case 'p':
ssh_port = a2port(optarg);
if (ssh_port <= 0) {
fprintf(stderr, "Bad port '%s'\n", optarg);
exit(1);
}
break;
case 'T':
timeout = convtime(optarg);
if (timeout == -1 || timeout == 0) {
fprintf(stderr, "Bad timeout '%s'\n", optarg);
usage();
}
break;
case 'v':
if (!debug_flag) {
debug_flag = 1;
log_level = SYSLOG_LEVEL_DEBUG1;
}
else if (log_level < SYSLOG_LEVEL_DEBUG3)
log_level++;
else
fatal("Too high debugging level.");
break;
case 'f':
if (strcmp(optarg, "-") == 0)
optarg = NULL;
argv[fopt_count++] = optarg;
break;
case 't':
get_keytypes = 0;
tname = strtok(optarg, ",");
while (tname) {
int type = key_type_from_name(tname);
switch (type) {
case KEY_RSA1:
get_keytypes |= KT_RSA1;
break;
case KEY_DSA:
get_keytypes |= KT_DSA;
break;
case KEY_ECDSA:
get_keytypes |= KT_ECDSA;
break;
case KEY_RSA:
get_keytypes |= KT_RSA;
break;
case KEY_ED25519:
get_keytypes |= KT_ED25519;
break;
case KEY_UNSPEC:
fatal("unknown key type %s", tname);
}
tname = strtok(NULL, ",");
}
break;
case '4':
IPv4or6 = AF_INET;
break;
case '6':
IPv4or6 = AF_INET6;
break;
case '?':
default:
usage();
}
}
if (optind == argc && !fopt_count)
usage();
log_init("ssh-keyscan", log_level, SYSLOG_FACILITY_USER, 1);
maxfd = fdlim_get(1);
if (maxfd < 0)
fatal("%s: fdlim_get: bad value", __progname);
if (maxfd > MAXMAXFD)
maxfd = MAXMAXFD;
if (MAXCON <= 0)
fatal("%s: not enough file descriptors", __progname);
if (maxfd > fdlim_get(0))
fdlim_set(maxfd);
fdcon = xcalloc(maxfd, sizeof(con));
read_wait_nfdset = howmany(maxfd, NFDBITS);
read_wait = xcalloc(read_wait_nfdset, sizeof(fd_mask));
for (j = 0; j < fopt_count; j++) {
if (argv[j] == NULL)
fp = stdin;
else if ((fp = fopen(argv[j], "r")) == NULL)
fatal("%s: %s: %s", __progname, argv[j],
strerror(errno));
linenum = 0;
while (read_keyfile_line(fp,
argv[j] == NULL ? "(stdin)" : argv[j], line, sizeof(line),
&linenum) != -1) {
/* Chomp off trailing whitespace and comments */
if ((cp = strchr(line, '#')) == NULL)
cp = line + strlen(line) - 1;
while (cp >= line) {
if (*cp == ' ' || *cp == '\t' ||
*cp == '\n' || *cp == '#')
*cp-- = '\0';
else
break;
}
/* Skip empty lines */
if (*line == '\0')
continue;
do_host(line);
}
if (ferror(fp))
fatal("%s: %s: %s", __progname, argv[j],
strerror(errno));
fclose(fp);
}
while (optind < argc)
do_host(argv[optind++]);
while (ncon > 0)
conloop();
return (0);
}
int
main(int argc, char **argv)
{
int debug_flag = 0, log_level = SYSLOG_LEVEL_INFO;
int opt, fopt_count = 0;
char *tname;
extern int optind;
extern char *optarg;
TAILQ_INIT(&tq);
/* Ensure that fds 0, 1 and 2 are open or directed to /dev/null */
sanitise_stdfd();
if (argc <= 1)
usage();
while ((opt = getopt(argc, argv, "Hv46p:T:t:f:")) != -1) {
switch (opt) {
case 'H':
hash_hosts = 1;
break;
case 'p':
ssh_port = a2port(optarg);
if (ssh_port <= 0) {
fprintf(stderr, "Bad port '%s'\n", optarg);
exit(1);
}
break;
case 'T':
timeout = convtime(optarg);
if (timeout == -1 || timeout == 0) {
fprintf(stderr, "Bad timeout '%s'\n", optarg);
usage();
}
break;
case 'v':
if (!debug_flag) {
debug_flag = 1;
log_level = SYSLOG_LEVEL_DEBUG1;
}
else if (log_level < SYSLOG_LEVEL_DEBUG3)
log_level++;
else
fatal("Too high debugging level.");
break;
case 'f':
if (strcmp(optarg, "-") == 0)
optarg = NULL;
argv[fopt_count++] = optarg;
break;
case 't':
get_keytypes = 0;
tname = strtok(optarg, ",");
while (tname) {
int type = key_type_from_name(tname);
switch (type) {
case KEY_RSA1:
get_keytypes |= KT_RSA1;
break;
case KEY_DSA:
get_keytypes |= KT_DSA;
break;
case KEY_RSA:
get_keytypes |= KT_RSA;
break;
case KEY_UNSPEC:
fatal("unknown key type %s", tname);
}
tname = strtok(NULL, ",");
}
break;
case '4':
IPv4or6 = AF_INET;
break;
case '6':
IPv4or6 = AF_INET6;
break;
case '?':
default:
usage();
}
}
if (optind == argc && !fopt_count)
usage();
log_init("ssh-keyscan", log_level, SYSLOG_FACILITY_USER, 1);
maxfd = fdlim_get(1);
if (maxfd < 0)
fatal("%s: fdlim_get: bad value", __progname);
if (maxfd > MAXMAXFD)
maxfd = MAXMAXFD;
if (MAXCON <= 0)
fatal("%s: not enough file descriptors", __progname);
if (maxfd > fdlim_get(0))
fdlim_set(maxfd);
fdcon = xcalloc(maxfd, sizeof(con));
read_wait_nfdset = howmany(maxfd, NFDBITS);
read_wait = xcalloc(read_wait_nfdset, sizeof(fd_mask));
if (fopt_count) {
Linebuf *lb;
char *line;
int j;
for (j = 0; j < fopt_count; j++) {
lb = Linebuf_alloc(argv[j], error);
if (!lb)
continue;
while ((line = Linebuf_getline(lb)) != NULL)
do_host(line);
Linebuf_free(lb);
}
}
while (optind < argc)
do_host(argv[optind++]);
while (ncon > 0)
conloop();
return (0);
}
void
async_init::start ()
{
static bool initialized;
if (initialized)
panic ("async_init called twice\n");
initialized = true;
/* Ignore SIGPIPE, since we may get a lot of these */
struct sigaction sa;
bzero (&sa, sizeof (sa));
sa.sa_handler = SIG_IGN;
sigaction (SIGPIPE, &sa, NULL);
if (!execsafe ()) {
int fdlim_hard = fdlim_get (1);
if (char *p = getenv ("FDLIM_HARD")) {
int n = atoi (p);
if (n > 0 && n < fdlim_hard) {
fdlim_hard = n;
fdlim_set (fdlim_hard, -1);
}
}
}
if (!getenv ("FDLIM_HARD") || !execsafe ()) {
str var = strbuf ("FDLIM_HARD=%d", fdlim_get (1));
xputenv (const_cast<char*>(var.cstr()));
var = strbuf ("FDLIM_SOFT=%d", fdlim_get (0));
xputenv (const_cast<char*>(var.cstr()));
}
sfs_core::selector_t::init ();
sfs_core::selector = New sfs_core::std_selector_t ();
lazylist = New list<lazycb_t, &lazycb_t::link>;
#ifdef WRAP_DEBUG
if (char *p = getenv ("CALLBACK_TRACE")) {
if (strchr (p, 'f'))
callback_trace |= CBTR_FD;
if (strchr (p, 't'))
callback_trace |= CBTR_TIME;
if (strchr (p, 's'))
callback_trace |= CBTR_SIG;
if (strchr (p, 'c'))
callback_trace |= CBTR_CHLD;
if (strchr (p, 'l'))
callback_trace |= CBTR_LAZY;
if (strchr (p, 'a'))
callback_trace |= -1;
if (strchr (p, 'T'))
callback_time = true;
}
#endif /* WRAP_DEBUG */
if (char *p = getenv ("SFS_OPTIONS")) {
for (const char *cp = p; *cp; cp++) {
switch (*cp) {
case 'b':
sfs_core::set_busywait (true);
break;
case 'e':
if (sfs_core::set_select_policy (sfs_core::SELECT_EPOLL) < 0)
warn ("failed to switch select policy to EPOLL\n");
break;
case 'k':
if (sfs_core::set_select_policy (sfs_core::SELECT_KQUEUE) < 0)
warn ("failed to switch select policy to KQUEUE\n");
break;
case 'z':
sfs_core::set_zombie_collect (true);
break;
default:
warn ("unknown SFS_OPTION: '%c'\n", *cp);
break;
}
}
}
}
int main (int argc, char **argv )
{
pid_t pid;
uid_t UID;
gid_t GID;
pid_t pidwait;
int waitstat;
int maxfd;
int s;
/* Sanity check */
if (argc > MAX_ARGS)
{
error_sys("arg buffer too small");
exit(-1);
}
if (geteuid() != 0)
{
error_sys("must be called by root");
exit(-1);
}
/* fork child that will become prelude-manager */
if ((pid = fork()) < 0)
error_sys("fork error");
else
{
if (pid == 0)
{
/* We're the child */
char *args[MAX_ARGS];
unsigned int i;
/* Become session leader */
setsid();
/* Change working directory to root directory.
The current working directory could be a mounted
filesystem; if the daemon stays on a mounted
filesystem it could prevent the filesystem from
being umounted. */
chdir("/");
/* Clear out file creation mask */
umask(0);
/* Close unneeded file descriptors */
maxfd = (int) sysconf(_SC_OPEN_MAX);
if (maxfd == -1)
maxfd = getdtablesize();
for (s = 3; s < maxfd; s++)
(void) close(s);
/* Increase limit on number of open file descriptors if necessary */
maxfd = fdlim_get(1);
if (maxfd < 0)
error_sys("fdlim_get: bad value");
if (maxfd > MAXMAXFD)
maxfd = MAXMAXFD;
if (maxfd > fdlim_get(0))
fdlim_set(maxfd);
/* Build calling argv */
args[0] = PRELUDE_MANAGER_PATH;
for (i=1;i<argc;i++)
{
args[i] = argv[i];
}
args[i++] = NULL;
/* Finally transform self into prelude-manager */
if (execvp(PRELUDE_MANAGER_PATH, args) < 0)
error_sys("execve error");
else
; /* avoid if-then ambiguity */
}
else
{
/* We're the parent
Terminate
*/
exit(0);
}
}
}
