return 0;
}
-LOC_EXPORT struct loc_as* loc_database_enumerator_next_as(struct loc_database_enumerator* enumerator) {
+LOC_EXPORT int loc_database_enumerator_next_as(
+ struct loc_database_enumerator* enumerator, struct loc_as** as) {
+ *as = NULL;
+
// Do not do anything if not in AS mode
if (enumerator->mode != LOC_DB_ENUMERATE_ASES)
- return NULL;
+ return 0;
struct loc_database* db = enumerator->db;
- struct loc_as* as;
while (enumerator->as_index < db->as_count) {
// Fetch the next AS
- int r = loc_database_fetch_as(db, &as, enumerator->as_index++);
+ int r = loc_database_fetch_as(db, as, enumerator->as_index++);
if (r)
- return NULL;
+ return r;
- r = loc_as_match_string(as, enumerator->string);
+ r = loc_as_match_string(*as, enumerator->string);
if (r == 1) {
DEBUG(enumerator->ctx, "AS%d (%s) matches %s\n",
- loc_as_get_number(as), loc_as_get_name(as), enumerator->string);
+ loc_as_get_number(*as), loc_as_get_name(*as), enumerator->string);
- return as;
+ return 0;
}
// No match
- loc_as_unref(as);
+ loc_as_unref(*as);
}
// Reset the index
enumerator->as_index = 0;
// We have searched through all of them
- return NULL;
+ return 0;
}
static int loc_database_enumerator_stack_push_node(
return 0;
}
-static int loc_database_enumerator_network_depth_first_search(
- struct loc_database_enumerator* e, struct loc_network** network) {
+LOC_EXPORT int loc_database_enumerator_next_network(
+ struct loc_database_enumerator* enumerator, struct loc_network** network) {
// Reset network
*network = NULL;
+
+ // Do not do anything if not in network mode
+ if (enumerator->mode != LOC_DB_ENUMERATE_NETWORKS)
+ return 0;
+
int r;
- DEBUG(e->ctx, "Called with a stack of %u nodes\n", e->network_stack_depth);
+ DEBUG(enumerator->ctx, "Called with a stack of %u nodes\n",
+ enumerator->network_stack_depth);
// Perform DFS
- while (e->network_stack_depth > 0) {
- DEBUG(e->ctx, "Stack depth: %u\n", e->network_stack_depth);
+ while (enumerator->network_stack_depth > 0) {
+ DEBUG(enumerator->ctx, "Stack depth: %u\n", enumerator->network_stack_depth);
// Get object from top of the stack
- struct loc_node_stack* node = &e->network_stack[e->network_stack_depth];
+ struct loc_node_stack* node = &enumerator->network_stack[enumerator->network_stack_depth];
// Remove the node from the stack if we have already visited it
- if (e->networks_visited[node->offset]) {
- e->network_stack_depth--;
+ if (enumerator->networks_visited[node->offset]) {
+ enumerator->network_stack_depth--;
continue;
}
// Mark the bits on the path correctly
- in6_addr_set_bit(&e->network_address,
+ in6_addr_set_bit(&enumerator->network_address,
(node->depth > 0) ? node->depth - 1 : 0, node->i);
- DEBUG(e->ctx, "Looking at node %jd\n", node->offset);
- e->networks_visited[node->offset]++;
+ DEBUG(enumerator->ctx, "Looking at node %jd\n", node->offset);
+ enumerator->networks_visited[node->offset]++;
// Pop node from top of the stack
struct loc_database_network_node_v0* n =
- e->db->network_nodes_v0 + node->offset;
+ enumerator->db->network_nodes_v0 + node->offset;
// Add edges to stack
- r = loc_database_enumerator_stack_push_node(e,
+ r = loc_database_enumerator_stack_push_node(enumerator,
be32toh(n->one), 1, node->depth + 1);
if (r)
return r;
- r = loc_database_enumerator_stack_push_node(e,
+ r = loc_database_enumerator_stack_push_node(enumerator,
be32toh(n->zero), 0, node->depth + 1);
if (r)
if (__loc_database_node_is_leaf(n)) {
off_t network_index = be32toh(n->network);
- DEBUG(e->ctx, "Node has a network at %jd\n", network_index);
+ DEBUG(enumerator->ctx, "Node has a network at %jd\n", network_index);
// Fetch the network object
- r = loc_database_fetch_network(e->db, network,
- &e->network_address, node->depth, network_index);
+ r = loc_database_fetch_network(enumerator->db, network,
+ &enumerator->network_address, node->depth, network_index);
// Break on any errors
if (r)
// Check if we are interested in this network
// Skip if the country code does not match
- if (e->country_code && !loc_network_match_country_code(*network, e->country_code)) {
+ if (enumerator->country_code &&
+ !loc_network_match_country_code(*network, enumerator->country_code)) {
loc_network_unref(*network);
+ *network = NULL;
+
continue;
}
// Skip if the ASN does not match
- if (e->asn && !loc_network_match_asn(*network, e->asn)) {
+ if (enumerator->asn &&
+ !loc_network_match_asn(*network, enumerator->asn)) {
loc_network_unref(*network);
+ *network = NULL;
+
continue;
}
// Reached the end of the search
// Mark all nodes as non-visited
- for (unsigned int i = 0; i < e->db->network_nodes_count; i++)
- e->networks_visited[i] = 0;
+ for (unsigned int i = 0; i < enumerator->db->network_nodes_count; i++)
+ enumerator->networks_visited[i] = 0;
return 0;
}
-
-LOC_EXPORT struct loc_network* loc_database_enumerator_next_network(
- struct loc_database_enumerator* enumerator) {
- // Do not do anything if not in network mode
- if (enumerator->mode != LOC_DB_ENUMERATE_NETWORKS)
- return NULL;
-
- struct loc_network* network = NULL;
-
- int r = loc_database_enumerator_network_depth_first_search(enumerator, &network);
- if (r) {
- return NULL;
- }
-
- return network;
-}