int
suidgetfd_required (str prog)
{
int fds[2];
if (socketpair (AF_UNIX, SOCK_STREAM, 0, fds) < 0)
fatal ("socketpair: %m\n");
close_on_exec (fds[0]);
str path = fix_exec_path ("suidconnect");
char *av[] = { "suidconnect", const_cast<char *> (prog.cstr ()), NULL };
if (spawn (path, av, fds[1]) == -1)
fatal << path << ": " << strerror (errno) << "\n";
close (fds[1]);
int fd = recvfd (fds[0]);
if (fd < 0) {
struct stat sb;
if (!runinplace && !stat (path, &sb)
&& (sb.st_gid != sfs_gid || !(sb.st_mode & 02000))) {
if (struct group *gr = getgrgid (sfs_gid))
warn << path << " should be setgid to group " << gr->gr_name << "\n";
else
warn << path << " should be setgid to group " << sfs_gid << "\n";
}
else {
warn << "have you launched the appropriate daemon (sfscd or sfssd)?\n";
warn << "have subsidiary daemons died (check your system logs)?\n";
}
fatal ("could not suidconnect for %s\n", prog.cstr ());
}
close (fds[0]);
return fd;
}
str
find_program_plus_libsfs (const char *program)
{
str s = fix_exec_path (program);
if (!s || !execok (s))
s = find_program (program);
return s;
}
static bool
parse_service (vec<str> &av, extension *e, str errpref)
{
u_int32_t snum;
str usage = strbuf ()
<< errpref << ": usage: Service num prog [arg ...]\n"
<< errpref << ": Service num -u path\n"
<< errpref << ": Service num -t server [port]\n";
if (av.size () < 3 || !convertint (av[1], &snum)) {
warn << usage;
return false;
}
if (!e) {
warn << errpref
<< ": Service must follow Release or Extensions\n";
return false;
}
if (e->srvtab[snum]) {
warn << errpref
<< ": Service " << snum << " already defined\n";
return false;
}
av.pop_front ();
av.pop_front ();
if (av[0][0] != '-') {
av[0] = fix_exec_path (av[0]);
sfssrv *ss = exectab[av];
if (!ss)
ss = New sfssrv_exec (av);
e->srvtab.insert (snum, ss);
return true;
}
else if (av[0] == "-u" && av.size () == 2) {
sfssrv *ss = New sfssrv_sockpath (av[1]);
e->srvtab.insert (snum, ss);
return true;
}
else if (av[0] == "-t" && av.size () >= 2 && av.size () <= 3) {
u_int16_t port = 0;
if (av.size () == 2 || convertint (av[2], &port)) {
sfssrv *ss = New sfssrv_proxy (av[1], port);
e->srvtab.insert (snum, ss);
return true;
}
}
warn << usage;
return false;
}
str
find_program (const char *program)
{
static rxx colonplus (":+");
str r;
if (strchr (program, '/')) {
r = program;
if (execok (r))
return r;
return NULL;
}
#ifdef MAINTAINER
if (builddir) {
r = fix_exec_path (program);
if (execok (r))
return r;
}
#endif /* MAINTAINER */
if (progdir) {
r = progdir << program;
if (execok (r))
return r;
}
const char *p = getenv ("PATH");
if (!p)
return NULL;
vec<str> vs;
split (&vs, colonplus, p);
for (str *sp = vs.base (); sp < vs.lim (); sp++) {
if (!*sp || !sp->len ())
continue;
r = *sp << "/" << program;
if (execok (r))
return r;
}
return NULL;
}
int
suidgetfd (str prog)
{
int fds[2];
if (socketpair (AF_UNIX, SOCK_STREAM, 0, fds) < 0)
return -1;
close_on_exec (fds[0]);
str path = fix_exec_path ("suidconnect");
char *av[] = { "suidconnect", "-q",
const_cast<char *> (prog.cstr ()), NULL };
if (spawn (path, av, fds[1]) == -1) {
close (fds[0]);
close (fds[1]);
return -1;
}
close (fds[1]);
int fd = recvfd (fds[0]);
close (fds[0]);
return fd;
}
