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skip enforcement if a recent measurement was successful

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This commit is contained in:
Andreas Steffen
2013-07-08 16:08:05 +02:00
parent a9750698cf
commit ea6ab9fb49
1 changed files with 56 additions and 15 deletions
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src/libimcv/imv/imv_policy_manager.c
+56 -15
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@@ -54,27 +54,67 @@ static void stderr_dbg(debug_t group, level_t level, char *fmt, ...)
/**
* Collect all enforcements by iterating up through parent groups
*/
static bool iterate_enforcements(database_t *db, int session_id, int group_id)
static bool iterate_enforcements(database_t *db, int device_id, int session_id,
int group_id)
{
int id, type, file, dir, arg_int, rec_fail, rec_noresult, parent;
int id, type, file, dir, arg_int, parent, policy, max_age;
int p_rec_fail, p_rec_noresult, e_rec_fail, e_rec_noresult, latest_rec;
bool latest_success;
char *argument;
enumerator_t *e;
time_t now;
enumerator_t *e, *e1, *e2;
now = time(NULL);
while (group_id)
{
e = db->query(db,
"SELECT e.id, "
"p.type, p.argument, p.file, p.dir, p.rec_fail, p.rec_noresult "
e1 = db->query(db,
"SELECT e.id, p.type, p.argument, p.file, p.dir, p.rec_fail, "
"p.rec_noresult, e.policy, e.max_age, e.rec_fail, e.rec_noresult "
"FROM enforcements AS e JOIN policies as p ON e.policy = p.id "
"WHERE e.group_id = ?", DB_INT, group_id,
DB_INT, DB_INT, DB_TEXT, DB_INT, DB_INT, DB_INT, DB_INT);
if (!e)
DB_INT, DB_INT, DB_TEXT, DB_INT, DB_INT, DB_INT, DB_INT,
DB_INT, DB_INT, DB_INT, DB_INT);
if (!e1)
{
return FALSE;
}
while (e->enumerate(e, &id, &type, &argument, &file, &dir,
&rec_fail, &rec_noresult))
while (e1->enumerate(e1, &id, &type, &argument, &file, &dir,
&p_rec_fail, &p_rec_noresult, &policy, &max_age,
&e_rec_fail, &e_rec_noresult))
{
/* check if the latest measurement of the device was successful */
latest_success = FALSE;
if (device_id)
{
e2 = db->query(db,
"SELECT r.rec FROM results AS r "
"JOIN sessions AS s ON s.id = r.session "
"WHERE r.policy = ? AND s.device = ? AND s.time > ? "
"ORDER BY s.time DESC",
DB_INT, policy, DB_INT, device_id,
DB_UINT, now - max_age, DB_INT);
if (!e2)
{
e1->destroy(e1);
return FALSE;
}
if (e2->enumerate(e2, &latest_rec) &&
latest_rec == TNC_IMV_ACTION_RECOMMENDATION_ALLOW)
{
latest_success = TRUE;
}
e2->destroy(e2);
}
if (latest_success)
{
/*skipping enforcement */
printf("skipping enforcment %d\n", id);
continue;
}
/* determine arg_int */
switch ((imv_workitem_type_t)type)
{
@@ -97,14 +137,15 @@ static bool iterate_enforcements(database_t *db, int session_id, int group_id)
"INSERT INTO workitems (session, enforcement, type, arg_str, "
"arg_int, rec_fail, rec_noresult) VALUES (?, ?, ?, ?, ?, ?, ?)",
DB_INT, session_id, DB_INT, id, DB_INT, type, DB_TEXT, argument,
DB_INT, arg_int, DB_INT, rec_fail, DB_INT, rec_noresult) != 1)
DB_INT, arg_int, DB_INT, e_rec_fail ? e_rec_fail : p_rec_fail,
DB_INT, e_rec_noresult ? e_rec_noresult : p_rec_noresult) != 1)
{
e->destroy(e);
e1->destroy(e1);
fprintf(stderr, "could not insert workitem\n");
return FALSE;
}
}
e->destroy(e);
e1->destroy(e1);
e = db->query(db,
"SELECT parent FROM groups WHERE id = ?",
@@ -158,7 +199,7 @@ static bool policy_start(database_t *db, int session_id)
}
while (e->enumerate(e, &group_id))
{
if (!iterate_enforcements(db, session_id, group_id))
if (!iterate_enforcements(db, device_id, session_id, group_id))
{
e->destroy(e);
return FALSE;
@@ -204,7 +245,7 @@ static bool policy_start(database_t *db, int session_id)
}
}
return iterate_enforcements(db, session_id, group_id);
return iterate_enforcements(db, device_id, session_id, group_id);
}
static bool policy_stop(database_t *db, int session_id)