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bus: Get loginfo string bits from DBusCredentials

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This saves a couple of _dbus_strdup/dbus_free pairs.

Signed-off-by: Simon McVittie <smcv@collabora.com>
Reviewed-by: Philip Withnall <withnall@endlessm.com>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=103737
This commit is contained in:
Simon McVittie 2018-01-15 19:51:24 +00:00
parent aaf690e805
commit 395269e0bc
1 changed files with 25 additions and 19 deletions
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44
bus/connection.c
View file

@ -585,34 +585,48 @@ cache_peer_loginfo_string (BusConnectionData *d,
DBusConnection *connection)
{
DBusString loginfo_buf;
unsigned long uid;
unsigned long pid;
char *windows_sid = NULL, *security_label = NULL;
dbus_uid_t uid = DBUS_UID_UNSET;
dbus_pid_t pid = DBUS_PID_UNSET;
const char *windows_sid = NULL;
const char *security_label = NULL;
dbus_bool_t prev_added;
const char *container = NULL;
const char *container_type = NULL;
const char *container_name = NULL;
DBusCredentials *credentials;
if (!_dbus_string_init (&loginfo_buf))
return FALSE;
credentials = _dbus_connection_get_credentials (connection);
prev_added = FALSE;
if (dbus_connection_get_unix_user (connection, &uid))
if (credentials != NULL)
{
if (!_dbus_string_append_printf (&loginfo_buf, "uid=%ld", uid))
uid = _dbus_credentials_get_unix_uid (credentials);
pid = _dbus_credentials_get_pid (credentials);
windows_sid = _dbus_credentials_get_windows_sid (credentials);
security_label = _dbus_credentials_get_linux_security_label (credentials);
}
if (uid != DBUS_UID_UNSET)
{
if (!_dbus_string_append_printf (&loginfo_buf, "uid=" DBUS_UID_FORMAT, uid))
goto oom;
else
prev_added = TRUE;
}
if (dbus_connection_get_unix_process_id (connection, &pid))
if (pid != DBUS_PID_UNSET)
{
if (prev_added)
{
if (!_dbus_string_append_byte (&loginfo_buf, ' '))
goto oom;
}
if (!_dbus_string_append_printf (&loginfo_buf, "pid=%ld comm=\"", pid))
if (!_dbus_string_append_printf (&loginfo_buf,
"pid=" DBUS_PID_FORMAT " comm=\"", pid))
goto oom;
/* Ignore errors here; we may not have permissions to read the
* proc file. */
@ -623,7 +637,7 @@ cache_peer_loginfo_string (BusConnectionData *d,
prev_added = TRUE;
}
if (dbus_connection_get_windows_user (connection, &windows_sid))
if (windows_sid != NULL)
{
dbus_bool_t did_append;
@ -635,15 +649,13 @@ cache_peer_loginfo_string (BusConnectionData *d,
did_append = _dbus_string_append_printf (&loginfo_buf,
"sid=\"%s\"", windows_sid);
dbus_free (windows_sid);
windows_sid = NULL;
if (!did_append)
goto oom;
else
prev_added = TRUE;
}
if (_dbus_connection_get_linux_security_label (connection, &security_label))
if (security_label != NULL)
{
dbus_bool_t did_append;
@ -655,14 +667,13 @@ cache_peer_loginfo_string (BusConnectionData *d,
did_append = _dbus_string_append_printf (&loginfo_buf,
"label=\"%s\"", security_label);
dbus_free (security_label);
security_label = NULL;
if (!did_append)
goto oom;
else
prev_added = TRUE;
}
/* This does have to come from the connection, not the credentials */
if (bus_containers_connection_is_contained (connection, &container,
&container_type,
&container_name))
@ -694,11 +705,6 @@ cache_peer_loginfo_string (BusConnectionData *d,
return TRUE;
oom:
_dbus_string_free (&loginfo_buf);
if (security_label != NULL)
dbus_free (security_label);
if (windows_sid != NULL)
dbus_free (windows_sid);
return FALSE;
}