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dbus: timeout connection setup

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Lennart Poettering 2011-03-11 00:45:06 +01:00
parent 099663ff8c
commit b997812119
1 changed files with 36 additions and 0 deletions
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36
src/dbus-common.c
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@ -27,6 +27,7 @@
#include "log.h"
#include "dbus-common.h"
#include "util.h"
int bus_check_peercred(DBusConnection *c) {
int fd;
@ -59,19 +60,54 @@ int bus_connect(DBusBusType t, DBusConnection **_bus, bool *private, DBusError *
assert(_bus);
#define TIMEOUT_USEC (60*USEC_PER_SEC)
/* If we are root, then let's not go via the bus */
if (geteuid() == 0 && t == DBUS_BUS_SYSTEM) {
usec_t begin, tstamp;
if (!(bus = dbus_connection_open_private("unix:abstract=/org/freedesktop/systemd1/private", error)))
return -EIO;
if (bus_check_peercred(bus) < 0) {
dbus_connection_close(bus);
dbus_connection_unref(bus);
dbus_set_error_const(error, DBUS_ERROR_ACCESS_DENIED, "Failed to verify owner of bus.");
return -EACCES;
}
begin = tstamp = now(CLOCK_MONOTONIC);
for (;;) {
if (tstamp > begin + TIMEOUT_USEC)
break;
if (dbus_connection_get_is_authenticated(bus))
break;
if (!dbus_connection_read_write_dispatch(bus, ((begin + TIMEOUT_USEC - tstamp) + USEC_PER_MSEC - 1) / USEC_PER_MSEC))
break;
tstamp = now(CLOCK_MONOTONIC);
}
if (!dbus_connection_get_is_connected(bus)) {
dbus_connection_close(bus);
dbus_connection_unref(bus);
dbus_set_error_const(error, DBUS_ERROR_NO_SERVER, "Connection terminated during authentication.");
return -ECONNREFUSED;
}
if (!dbus_connection_get_is_authenticated(bus)) {
dbus_connection_close(bus);
dbus_connection_unref(bus);
dbus_set_error_const(error, DBUS_ERROR_TIMEOUT, "Failed to authenticate in time.");
return -EACCES;
}
if (private)
*private = true;