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#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <glib.h>
static gchar *
create_bus (const gchar *config_file, GPid *pid)
{
int name_pipe[2];
if (pipe (name_pipe) < 0)
{
g_warning ("Error creating pipe: %s", strerror (errno));
exit (EXIT_FAILURE);
}
g_autofree gchar *command = g_strdup_printf ("dbus-daemon --config-file=%s --print-address=%d", config_file, name_pipe[1]);
gchar **argv;
g_autoptr(GError) error = NULL;
if (!g_shell_parse_argv (command, NULL, &argv, &error))
{
g_warning ("Error parsing command line: %s", error->message);
exit (EXIT_FAILURE);
}
if (!g_spawn_async (NULL, argv, NULL, G_SPAWN_SEARCH_PATH | G_SPAWN_LEAVE_DESCRIPTORS_OPEN, NULL, NULL, pid, &error))
{
g_warning ("Error launching D-Bus: %s", error->message);
exit (EXIT_FAILURE);
}
gchar address[1024];
ssize_t n_read = read (name_pipe[0], address, 1023);
if (n_read < 0)
{
g_warning ("Error reading D-Bus address: %s", strerror (errno));
exit (EXIT_FAILURE);
}
address[n_read] = '\0';
if (n_read > 0 && address[n_read - 1] == '\n')
address[n_read - 1] = '\0';
return g_strdup (address);
}
int
main (int argc, char **argv)
{
g_autofree gchar *system_conf_file = g_build_filename (DATADIR, "system.conf", NULL);
GPid system_bus_pid;
g_autofree gchar *system_bus_address = create_bus (system_conf_file, &system_bus_pid);
g_setenv ("DBUS_SYSTEM_BUS_ADDRESS", system_bus_address, TRUE);
g_autofree gchar *session_conf_file = g_build_filename (DATADIR, "session.conf", NULL);
GPid session_bus_pid;
g_autofree gchar *session_bus_address = create_bus (session_conf_file, &session_bus_pid);
g_setenv ("DBUS_SESSION_BUS_ADDRESS", session_bus_address, TRUE);
GPid child_pid = fork ();
if (child_pid == 0)
{
execvp (argv[1], argv + 1);
_exit (EXIT_FAILURE);
}
int status;
waitpid (child_pid, &status, 0);
kill (session_bus_pid, SIGTERM);
kill (system_bus_pid, SIGTERM);
if (WIFEXITED (status))
return WEXITSTATUS (status);
else
return EXIT_FAILURE;
}
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