static int redirect_socket_to_pty(RSocket *sock) {
#if HAVE_PTY
// directly duplicating the fds using dup2() creates problems
// in case of interactive applications
int fdm, fds;
if (openpty (&fdm, &fds, NULL, NULL, NULL) == -1) {
perror ("opening pty");
return -1;
}
pid_t child_pid = r_sys_fork ();
if (child_pid == -1) {
eprintf ("cannot fork\n");
close(fdm);
close(fds);
return -1;
}
if (child_pid == 0) {
// child process
close (fds);
char *buff = NULL;
int sockfd = sock->fd;
int max_fd = fdm > sockfd ? fdm : sockfd;
while (true) {
fd_set readfds;
FD_ZERO (&readfds);
FD_SET (fdm, &readfds);
FD_SET (sockfd, &readfds);
if (select (max_fd + 1, &readfds, NULL, NULL, NULL) == -1) {
perror ("select error");
break;
}
if (FD_ISSET (fdm, &readfds)) {
if (fd_forward (fdm, sockfd, &buff) != 0) {
break;
}
}
if (FD_ISSET (sockfd, &readfds)) {
if (fd_forward (sockfd, fdm, &buff) != 0) {
break;
}
}
}
free (buff);
close (fdm);
r_socket_free (sock);
exit (0);
}
// parent
r_socket_close_fd (sock);
login_tty (fds);
close (fdm);
// disable the echo on slave stdin
struct termios t;
tcgetattr (0, &t);
cfmakeraw (&t);
tcsetattr (0, TCSANOW, &t);
return 0;
#else
// Fallback to socket to I/O redirection
return redirect_socket_to_stdio (sock);
#endif
}
R_API int r_run_config_env(RRunProfile *p) {
int ret;
if (!p->_program && !p->_system && !p->_runlib) {
printf ("No program, system or runlib rule defined\n");
return 1;
}
// when IO is redirected to a process, handle them together
if (handle_redirection (p->_stdio, true, true, false) != 0) {
return 1;
}
if (handle_redirection (p->_stdin, true, false, false) != 0) {
return 1;
}
if (handle_redirection (p->_stdout, false, true, false) != 0) {
return 1;
}
if (handle_redirection (p->_stderr, false, false, true) != 0) {
return 1;
}
if (p->_aslr != -1) {
setASLR (p, p->_aslr);
}
#if __UNIX__
set_limit (p->_docore, RLIMIT_CORE, RLIM_INFINITY);
if (p->_maxfd) {
set_limit (p->_maxfd, RLIMIT_NOFILE, p->_maxfd);
}
#ifdef RLIMIT_NPROC
if (p->_maxproc) {
set_limit (p->_maxproc, RLIMIT_NPROC, p->_maxproc);
}
#endif
if (p->_maxstack) {
set_limit (p->_maxstack, RLIMIT_STACK, p->_maxstack);
}
#else
if (p->_docore || p->_maxfd || p->_maxproc || p->_maxstack)
eprintf ("Warning: setrlimits not supported for this platform\n");
#endif
if (p->_connect) {
char *q = strchr (p->_connect, ':');
if (q) {
RSocket *fd = r_socket_new (0);
*q = 0;
if (!r_socket_connect_tcp (fd, p->_connect, q+1, 30)) {
eprintf ("Cannot connect\n");
return 1;
}
if (p->_pty) {
if (redirect_socket_to_pty (fd) != 0) {
eprintf ("socket redirection failed\n");
r_socket_free (fd);
return 1;
}
} else {
redirect_socket_to_stdio (fd);
}
} else {
eprintf ("Invalid format for connect. missing ':'\n");
return 1;
}
}
if (p->_listen) {
RSocket *child, *fd = r_socket_new (0);
bool is_child = false;
if (!r_socket_listen (fd, p->_listen, NULL)) {
eprintf ("rarun2: cannot listen\n");
r_socket_free (fd);
return 1;
}
while (true) {
child = r_socket_accept (fd);
if (child) {
is_child = true;
if (p->_dofork && !p->_dodebug) {
#ifdef _MSC_VER
int child_pid = r_sys_fork ();
#else
pid_t child_pid = r_sys_fork ();
#endif
if (child_pid == -1) {
eprintf("rarun2: cannot fork\n");
r_socket_free (child);
r_socket_free (fd);
return 1;
} else if (child_pid != 0){
// parent code
is_child = false;
}
}
if (is_child) {
r_socket_close_fd (fd);
eprintf ("connected\n");
if (p->_pty) {
if (redirect_socket_to_pty (child) != 0) {
eprintf ("socket redirection failed\n");
r_socket_free (child);
r_socket_free (fd);
return 1;
}
} else {
redirect_socket_to_stdio (child);
}
break;
} else {
r_socket_close_fd (child);
}
}
}
if (!is_child) {
r_socket_free (child);
}
r_socket_free (fd);
}
if (p->_r2sleep != 0) {
r_sys_sleep (p->_r2sleep);
}
#if __UNIX__
if (p->_chroot) {
if (chdir (p->_chroot) == -1) {
eprintf ("Cannot chdir to chroot in %s\n", p->_chroot);
return 1;
} else {
if (chroot (".") == -1) {
eprintf ("Cannot chroot to %s\n", p->_chroot);
return 1;
} else {
// Silenting pedantic meson flags...
if (chdir ("/") == -1) {
eprintf ("Cannot chdir to /\n");
return 1;
}
if (p->_chgdir) {
if (chdir (p->_chgdir) == -1) {
eprintf ("Cannot chdir after chroot to %s\n", p->_chgdir);
return 1;
}
}
}
}
} else if (p->_chgdir) {
if (chdir (p->_chgdir) == -1) {
eprintf ("Cannot chdir after chroot to %s\n", p->_chgdir);
return 1;
}
}
#else
if (p->_chgdir) {
ret = chdir (p->_chgdir);
if (ret < 0) {
return 1;
}
}
if (p->_chroot) {
ret = chdir (p->_chroot);
if (ret < 0) {
return 1;
}
}
#endif
#if __UNIX__
if (p->_setuid) {
ret = setgroups (0, NULL);
if (ret < 0) {
return 1;
}
ret = setuid (atoi (p->_setuid));
if (ret < 0) {
return 1;
}
}
if (p->_seteuid) {
ret = seteuid (atoi (p->_seteuid));
if (ret < 0) {
return 1;
}
}
if (p->_setgid) {
ret = setgid (atoi (p->_setgid));
if (ret < 0) {
return 1;
}
}
if (p->_input) {
char *inp;
int f2[2];
if (pipe (f2) != -1) {
close (0);
dup2 (f2[0], 0);
} else {
eprintf ("[ERROR] rarun2: Cannot create pipe\n");
return 1;
}
inp = getstr (p->_input);
if (inp) {
size_t inpl = strlen (inp);
if (write (f2[1], inp, inpl) != inpl) {
eprintf ("[ERROR] rarun2: Cannot write to the pipe\n");
}
close (f2[1]);
free (inp);
} else {
eprintf ("Invalid input\n");
}
}
#endif
if (p->_r2preload) {
if (p->_preload) {
eprintf ("WARNING: Only one library can be opened at a time\n");
}
p->_preload = R2_LIBDIR"/libr2."R_LIB_EXT;
}
if (p->_libpath) {
#if __WINDOWS__
eprintf ("rarun2: libpath unsupported for this platform\n");
#elif __HAIKU__
r_sys_setenv ("LIBRARY_PATH", p->_libpath);
#elif __APPLE__
r_sys_setenv ("DYLD_LIBRARY_PATH", p->_libpath);
#else
r_sys_setenv ("LD_LIBRARY_PATH", p->_libpath);
#endif
}
if (p->_preload) {
#if __APPLE__
// 10.6
#ifndef __MAC_10_7
r_sys_setenv ("DYLD_PRELOAD", p->_preload);
#endif
r_sys_setenv ("DYLD_INSERT_LIBRARIES", p->_preload);
// 10.8
r_sys_setenv ("DYLD_FORCE_FLAT_NAMESPACE", "1");
#else
r_sys_setenv ("LD_PRELOAD", p->_preload);
#endif
}
if (p->_timeout) {
#if __UNIX__
int mypid = getpid ();
if (!r_sys_fork ()) {
int use_signal = p->_timeout_sig;
if (use_signal < 1) {
use_signal = SIGKILL;
}
sleep (p->_timeout);
if (!kill (mypid, 0)) {
eprintf ("\nrarun2: Interrupted by timeout\n");
}
kill (mypid, use_signal);
exit (0);
}
#else
eprintf ("timeout not supported for this platform\n");
#endif
}
return 0;
}
R_API int r_run_start(RRunProfile *p) {
#if __APPLE__
posix_spawnattr_t attr = {0};
pid_t pid = -1;
#endif
int ret;
if (!p->_program && !p->_system) {
printf ("No program or system rule defined\n");
return 1;
}
// when IO is redirected to a process, handle them together
if (handle_redirection (p->_stdio, true, true, false) != 0) {
return 1;
}
if (handle_redirection (p->_stdin, true, false, false) != 0) {
return 1;
}
if (handle_redirection (p->_stdout, false, true, false) != 0) {
return 1;
}
if (handle_redirection (p->_stderr, false, false, true) != 0) {
return 1;
}
if (p->_aslr != -1)
setASLR (p->_aslr);
#if __UNIX__
set_limit (p->_docore, RLIMIT_CORE, RLIM_INFINITY);
if (p->_maxfd)
set_limit (p->_maxfd, RLIMIT_NOFILE, p->_maxfd);
#ifdef RLIMIT_NPROC
if (p->_maxproc)
set_limit (p->_maxproc, RLIMIT_NPROC, p->_maxproc);
#endif
if (p->_maxstack)
set_limit (p->_maxstack, RLIMIT_STACK, p->_maxstack);
#else
if (p->_docore || p->_maxfd || p->_maxproc || p->_maxstack)
eprintf ("Warning: setrlimits not supported for this platform\n");
#endif
if (p->_connect) {
char *q = strchr (p->_connect, ':');
if (q) {
RSocket *fd = r_socket_new (0);
*q = 0;
if (!r_socket_connect_tcp (fd, p->_connect, q+1, 30)) {
eprintf ("Cannot connect\n");
return 1;
}
eprintf ("connected\n");
close (0);
close (1);
close (2);
dup2 (fd->fd, 0);
dup2 (fd->fd, 1);
dup2 (fd->fd, 2);
} else {
eprintf ("Invalid format for connect. missing ':'\n");
return 1;
}
}
if (p->_listen) {
RSocket *child, *fd = r_socket_new (0);
if (!r_socket_listen (fd, p->_listen, NULL)) {
eprintf ("rarun2: cannot listen\n");
r_socket_free (fd);
return 1;
}
while (true) {
child = r_socket_accept (fd);
if (child) {
int is_child = true;
if (p->_dofork && !p->_dodebug) {
pid_t child_pid = r_sys_fork ();
if (child_pid == -1) {
eprintf("rarun2: cannot fork\n");
r_socket_free (child);
r_socket_free (fd);
return 1;
} else if (child_pid != 0){
// parent code
is_child = false;
}
}
if (is_child) {
r_socket_close_fd (fd);
eprintf ("connected\n");
close (0);
close (1);
close (2);
dup2 (child->fd, 0);
dup2 (child->fd, 1);
dup2 (child->fd, 2);
break;
} else {
r_socket_close_fd (child);
}
}
}
}
if (p->_r2sleep != 0) {
r_sys_sleep (p->_r2sleep);
}
if (p->_chgdir) {
ret = chdir (p->_chgdir);
if (ret < 0)
return 1;
}
if (p->_chroot) {
ret = chdir (p->_chroot);
if (ret < 0)
return 1;
}
#if __UNIX__
if (p->_chroot) {
if (chroot (p->_chroot)) {
eprintf ("rarun2: cannot chroot\n");
return 1;
}
chdir("/");
}
if (p->_setuid) {
ret = setgroups(0, NULL);
if (ret < 0)
return 1;
ret = setuid (atoi (p->_setuid));
if (ret < 0)
return 1;
}
if (p->_seteuid) {
ret = seteuid (atoi (p->_seteuid));
if (ret < 0)
return 1;
}
if (p->_setgid) {
ret = setgid (atoi (p->_setgid));
if (ret < 0)
return 1;
}
if (p->_input) {
char *inp;
int f2[2];
pipe (f2);
close (0);
dup2 (f2[0], 0);
inp = getstr (p->_input);
if (inp) {
write (f2[1], inp, strlen (inp));
close (f2[1]);
free (inp);
} else {
eprintf ("Invalid input\n");
}
}
#endif
if (p->_r2preload) {
if (p->_preload) {
eprintf ("WARNING: Only one library can be opened at a time\n");
}
p->_preload = R2_LIBDIR"/libr2."R_LIB_EXT;
}
if (p->_libpath) {
#if __WINDOWS__
eprintf ("rarun2: libpath unsupported for this platform\n");
#elif __HAIKU__
r_sys_setenv ("LIBRARY_PATH", p->_libpath);
#elif __APPLE__
r_sys_setenv ("DYLD_LIBRARY_PATH", p->_libpath);
#else
r_sys_setenv ("LD_LIBRARY_PATH", p->_libpath);
#endif
}
if (p->_preload) {
#if __APPLE__
// 10.6
r_sys_setenv ("DYLD_PRELOAD", p->_preload);
r_sys_setenv ("DYLD_INSERT_LIBRARIES", p->_preload);
// 10.8
r_sys_setenv ("DYLD_FORCE_FLAT_NAMESPACE", "1");
#else
r_sys_setenv ("LD_PRELOAD", p->_preload);
#endif
}
if (p->_timeout) {
#if __UNIX__
int mypid = getpid ();
if (!r_sys_fork ()) {
sleep (p->_timeout);
if (!kill (mypid, 0))
eprintf ("\nrarun2: Interrupted by timeout\n");
kill (mypid, SIGKILL);
exit (0);
}
#else
eprintf ("timeout not supported for this platform\n");
#endif
}
#if __APPLE__
posix_spawnattr_init (&attr);
if (p->_args[0]) {
char **envp = r_sys_get_environ();
ut32 spflags = 0; //POSIX_SPAWN_START_SUSPENDED;
spflags |= POSIX_SPAWN_SETEXEC;
if (p->_aslr == 0) {
#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
spflags |= _POSIX_SPAWN_DISABLE_ASLR;
}
(void)posix_spawnattr_setflags (&attr, spflags);
if (p->_bits) {
size_t copied = 1;
cpu_type_t cpu;
#if __i386__ || __x86_64__
cpu = CPU_TYPE_I386;
if (p->_bits == 64)
cpu |= CPU_ARCH_ABI64;
#else
cpu = CPU_TYPE_ANY;
#endif
posix_spawnattr_setbinpref_np (
&attr, 1, &cpu, &copied);
}
ret = posix_spawnp (&pid, p->_args[0],
NULL, &attr, p->_args, envp);
switch (ret) {
case 0:
break;
case 22:
eprintf ("posix_spawnp: Invalid argument\n");
break;
case 86:
eprintf ("posix_spawnp: Unsupported architecture\n");
break;
default:
eprintf ("posix_spawnp: unknown error %d\n", ret);
perror ("posix_spawnp");
break;
}
exit (ret);
}
#endif
if (p->_system) {
if (p->_pid) {
eprintf ("PID: Cannot determine pid with 'system' directive. Use 'program'.\n");
}
exit (r_sys_cmd (p->_system));
}
if (p->_program) {
if (!r_file_exists (p->_program)) {
char *progpath = r_file_path (p->_program);
if (progpath && *progpath) {
free (p->_program);
p->_program = progpath;
} else {
free (progpath);
eprintf ("rarun2: %s: file not found\n", p->_program);
return 1;
}
}
#if __UNIX__
// XXX HACK close all non-tty fds
{ int i; for (i=3; i<10; i++) close (i); }
// TODO: use posix_spawn
if (p->_setgid) {
ret = setgid (atoi (p->_setgid));
if (ret < 0)
return 1;
}
if (p->_pid) {
eprintf ("PID: %d\n", getpid ());
}
if (p->_pidfile) {
char pidstr[32];
snprintf (pidstr, sizeof (pidstr), "%d\n", getpid ());
r_file_dump (p->_pidfile,
(const ut8*)pidstr,
strlen (pidstr), 0);
}
#endif
if (p->_nice) {
#if __UNIX__ && !defined(__HAIKU__)
if (nice (p->_nice) == -1) {
return 1;
}
#else
eprintf ("nice not supported for this platform\n");
#endif
}
exit (execv (p->_program, (char* const*)p->_args));
}
return 0;
}
