gspawn-win32-helper.c [plain text]
#include "config.h"
#undef G_LOG_DOMAIN
#include "glib.h"
#define GSPAWN_HELPER
#include "gspawn-win32.c"
static GString *debugstring;
static void
write_err_and_exit (gint fd,
gint msg)
{
gint en = errno;
if (debug)
{
debugstring = g_string_new (NULL);
g_string_append (debugstring,
g_strdup_printf ("writing error code %d and errno %d",
msg, en));
MessageBox (NULL, debugstring->str, "gspawn-win32-helper", 0);
}
write (fd, &msg, sizeof(msg));
write (fd, &en, sizeof(en));
_exit (1);
}
#ifdef __GNUC__
# ifndef _stdcall
# define _stdcall __attribute__((stdcall))
# endif
#endif
int _stdcall
WinMain (struct HINSTANCE__ *hInstance,
struct HINSTANCE__ *hPrevInstance,
char *lpszCmdLine,
int nCmdShow)
{
int child_err_report_fd;
int i;
int fd;
int mode;
int handle;
int no_error = CHILD_NO_ERROR;
int zero = 0;
gint file_and_argv_zero = 0;
gchar **new_argv;
SETUP_DEBUG();
if (debug)
{
debugstring = g_string_new (NULL);
g_string_append (debugstring,
g_strdup_printf ("g-spawn-win32-helper: "
"argc = %d, argv: ",
__argc));
for (i = 0; i < __argc; i++)
{
if (i > 0)
g_string_append (debugstring, " ");
g_string_append (debugstring, __argv[i]);
}
MessageBox (NULL, debugstring->str, "gspawn-win32-helper", 0);
}
g_assert (__argc >= ARG_COUNT);
child_err_report_fd = atoi (__argv[ARG_CHILD_ERR_REPORT]);
if (__argv[ARG_CHILD_ERR_REPORT][strlen (__argv[ARG_CHILD_ERR_REPORT]) - 1] == '#')
file_and_argv_zero = 1;
if (__argv[ARG_STDIN][0] == '-')
;
else if (__argv[ARG_STDIN][0] == 'z')
{
fd = open ("NUL:", O_RDONLY);
if (fd != 0)
{
dup2 (fd, 0);
close (fd);
}
}
else
{
fd = atoi (__argv[ARG_STDIN]);
if (fd != 0)
{
dup2 (fd, 0);
close (fd);
}
}
if (__argv[ARG_STDOUT][0] == '-')
;
else if (__argv[ARG_STDOUT][0] == 'z')
{
fd = open ("NUL:", O_WRONLY);
if (fd != 1)
{
dup2 (fd, 1);
close (fd);
}
}
else
{
fd = atoi (__argv[ARG_STDOUT]);
if (fd != 1)
{
dup2 (fd, 1);
close (fd);
}
}
if (__argv[ARG_STDERR][0] == '-')
;
else if (__argv[ARG_STDERR][0] == 'z')
{
fd = open ("NUL:", O_WRONLY);
if (fd != 2)
{
dup2 (fd, 2);
close (fd);
}
}
else
{
fd = atoi (__argv[ARG_STDERR]);
if (fd != 2)
{
dup2 (fd, 2);
close (fd);
}
}
if (__argv[ARG_WORKING_DIRECTORY][0] == '-' &&
__argv[ARG_WORKING_DIRECTORY][1] == 0)
;
else if (chdir (__argv[ARG_WORKING_DIRECTORY]) < 0)
write_err_and_exit (child_err_report_fd,
CHILD_CHDIR_FAILED);
if (__argv[ARG_CLOSE_DESCRIPTORS][0] == 'y')
for (i = 3; i < 1000; i++)
if (i != child_err_report_fd)
close (i);
if (__argv[ARG_WAIT][0] == 'w')
mode = P_WAIT;
else
mode = P_NOWAIT;
protect_argv (__argv, &new_argv);
if (debug)
{
debugstring = g_string_new (NULL);
g_string_append (debugstring,
g_strdup_printf ("calling %s %s mode=%s argv: ",
(__argv[ARG_USE_PATH][0] == 'y' ?
"spawnvp" : "spawnv"),
__argv[ARG_PROGRAM],
(mode == P_WAIT ?
"P_WAIT" : "P_NOWAIT")));
i = ARG_PROGRAM + 1 + file_and_argv_zero;
while (new_argv[i])
{
g_string_append (debugstring, new_argv[i++]);
if (new_argv[i])
g_string_append (debugstring, " ");
}
MessageBox (NULL, debugstring->str, "gspawn-win32-helper", 0);
}
if (new_argv[ARG_USE_PATH][0] == 'y')
handle = spawnvp (mode, __argv[ARG_PROGRAM], new_argv + ARG_PROGRAM + file_and_argv_zero);
else
handle = spawnv (mode, __argv[ARG_PROGRAM], new_argv + ARG_PROGRAM + file_and_argv_zero);
if (debug)
{
debugstring = g_string_new (NULL);
g_string_append (debugstring,
g_strdup_printf ("%s returned %#x",
(__argv[ARG_USE_PATH][0] == 'y' ?
"spawnvp" : "spawnv"),
handle));
MessageBox (NULL, debugstring->str, "gspawn-win32-helper", 0);
}
if (handle < 0)
write_err_and_exit (child_err_report_fd, CHILD_SPAWN_FAILED);
write (child_err_report_fd, &no_error, sizeof (no_error));
if (mode == P_NOWAIT)
write (child_err_report_fd, &handle, sizeof (handle));
else
write (child_err_report_fd, &zero, sizeof (zero));
return 0;
}