#include <loc/libloc.h>
#include <loc/as.h>
+#include <loc/as-list.h>
#include <loc/compat.h>
#include <loc/country.h>
+#include <loc/country-list.h>
#include <loc/database.h>
#include <loc/format.h>
#include <loc/network.h>
// Search string
char* string;
- char country_code[3];
- uint32_t asn;
+ struct loc_country_list* countries;
+ struct loc_as_list* asns;
enum loc_network_flags flags;
int family;
+ // Flatten output?
+ int flatten;
+
// Index of the AS we are looking at
unsigned int as_index;
+ // Index of the country we are looking at
+ unsigned int country_index;
+
// Network state
struct in6_addr network_address;
struct loc_node_stack network_stack[MAX_STACK_DEPTH];
int network_stack_depth;
unsigned int* networks_visited;
+
+ // For subnet search
+ struct loc_network_list* stack;
};
static int loc_database_read_magic(struct loc_database* db) {
char** dst, char* src, size_t length) {
// Check for a plausible signature length
if (length > LOC_SIGNATURE_MAX_LENGTH) {
- ERROR(db->ctx, "Signature too long: %ld\n", length);
+ ERROR(db->ctx, "Signature too long: %zu\n", length);
return -EINVAL;
}
- DEBUG(db->ctx, "Reading signature of %ld bytes\n", length);
+ DEBUG(db->ctx, "Reading signature of %zu bytes\n", length);
// Allocate space
*dst = malloc(length);
ERROR(db->ctx, "Could not unmap network nodes section: %s\n", strerror(errno));
}
+ // Remove mapped countries section
+ if (db->countries_v1) {
+ r = munmap(db->countries_v1, db->countries_count * sizeof(*db->countries_v1));
+ if (r)
+ ERROR(db->ctx, "Could not unmap countries section: %s\n", strerror(errno));
+ }
+
if (db->pool)
loc_stringpool_unref(db->pool);
}
clock_t end = clock();
- DEBUG(db->ctx, "Signature checked in %.4fms\n",
+ INFO(db->ctx, "Signature checked in %.4fms\n",
(double)(end - start) / CLOCKS_PER_SEC * 1000);
CLEANUP:
off_t lo = 0;
off_t hi = db->as_count - 1;
+#ifdef ENABLE_DEBUG
// Save start time
clock_t start = clock();
+#endif
while (lo <= hi) {
off_t i = (lo + hi) / 2;
// Check if this is a match
uint32_t as_number = loc_as_get_number(*as);
if (as_number == number) {
+#ifdef ENABLE_DEBUG
clock_t end = clock();
// Log how fast this has been
DEBUG(db->ctx, "Found AS%u in %.4fms\n", as_number,
(double)(end - start) / CLOCKS_PER_SEC * 1000);
+#endif
return 0;
}
return -1;
}
+#ifdef ENABLE_DEBUG
if (r == 0) {
char* string = loc_network_str(*network);
DEBUG(db->ctx, "Got network %s\n", string);
free(string);
}
+#endif
return r;
}
}
// Check if the given IP address is inside the network
- r = loc_network_match_address(*network, address);
- if (r) {
+ if (!loc_network_match_address(*network, address)) {
DEBUG(db->ctx, "Searched address is not part of the network\n");
loc_network_unref(*network);
*network = NULL;
+#ifdef ENABLE_DEBUG
// Save start time
clock_t start = clock();
+#endif
int r = __loc_database_lookup(db, address, network, &network_address,
db->network_nodes_v1, 0);
+#ifdef ENABLE_DEBUG
clock_t end = clock();
// Log how fast this has been
DEBUG(db->ctx, "Executed network search in %.4fms\n",
(double)(end - start) / CLOCKS_PER_SEC * 1000);
+#endif
return r;
}
off_t lo = 0;
off_t hi = db->countries_count - 1;
+#ifdef ENABLE_DEBUG
// Save start time
clock_t start = clock();
+#endif
while (lo <= hi) {
off_t i = (lo + hi) / 2;
int result = strcmp(code, cc);
if (result == 0) {
+#ifdef ENABLE_DEBUG
clock_t end = clock();
// Log how fast this has been
DEBUG(db->ctx, "Found country %s in %.4fms\n", cc,
(double)(end - start) / CLOCKS_PER_SEC * 1000);
+#endif
return 0;
}
// Enumerator
+static void loc_database_enumerator_free(struct loc_database_enumerator* enumerator) {
+ DEBUG(enumerator->ctx, "Releasing database enumerator %p\n", enumerator);
+
+ // Release all references
+ loc_database_unref(enumerator->db);
+ loc_unref(enumerator->ctx);
+
+ if (enumerator->string)
+ free(enumerator->string);
+
+ if (enumerator->countries)
+ loc_country_list_unref(enumerator->countries);
+
+ if (enumerator->asns)
+ loc_as_list_unref(enumerator->asns);
+
+ // Free network search
+ free(enumerator->networks_visited);
+
+ // Free subnet stack
+ if (enumerator->stack)
+ loc_network_list_unref(enumerator->stack);
+
+ free(enumerator);
+}
+
LOC_EXPORT int loc_database_enumerator_new(struct loc_database_enumerator** enumerator,
- struct loc_database* db, enum loc_database_enumerator_mode mode) {
+ struct loc_database* db, enum loc_database_enumerator_mode mode, int flags) {
struct loc_database_enumerator* e = calloc(1, sizeof(*e));
if (!e)
return -ENOMEM;
e->mode = mode;
e->refcount = 1;
+ // Flatten output?
+ e->flatten = (flags & LOC_DB_ENUMERATOR_FLAGS_FLATTEN);
+
// Initialise graph search
- //e->network_stack[++e->network_stack_depth] = 0;
e->network_stack_depth = 1;
e->networks_visited = calloc(db->network_nodes_count, sizeof(*e->networks_visited));
+ // Allocate stack
+ int r = loc_network_list_new(e->ctx, &e->stack);
+ if (r) {
+ loc_database_enumerator_free(e);
+ return r;
+ }
+
DEBUG(e->ctx, "Database enumerator object allocated at %p\n", e);
*enumerator = e;
return enumerator;
}
-static void loc_database_enumerator_free(struct loc_database_enumerator* enumerator) {
- DEBUG(enumerator->ctx, "Releasing database enumerator %p\n", enumerator);
-
- // Release all references
- loc_database_unref(enumerator->db);
- loc_unref(enumerator->ctx);
-
- if (enumerator->string)
- free(enumerator->string);
-
- // Free network search
- free(enumerator->networks_visited);
-
- free(enumerator);
-}
-
LOC_EXPORT struct loc_database_enumerator* loc_database_enumerator_unref(struct loc_database_enumerator* enumerator) {
if (!enumerator)
return NULL;
return 0;
}
-LOC_EXPORT int loc_database_enumerator_set_country_code(struct loc_database_enumerator* enumerator, const char* country_code) {
- // Set empty country code
- if (!country_code || !*country_code) {
- *enumerator->country_code = '\0';
- return 0;
- }
+LOC_EXPORT struct loc_country_list* loc_database_enumerator_get_countries(
+ struct loc_database_enumerator* enumerator) {
+ if (!enumerator->countries)
+ return NULL;
- // Treat A1, A2, A3 as special country codes,
- // but perform search for flags instead
- if (strcmp(country_code, "A1") == 0) {
- return loc_database_enumerator_set_flag(enumerator,
- LOC_NETWORK_FLAG_ANONYMOUS_PROXY);
- } else if (strcmp(country_code, "A2") == 0) {
- return loc_database_enumerator_set_flag(enumerator,
- LOC_NETWORK_FLAG_SATELLITE_PROVIDER);
- } else if (strcmp(country_code, "A3") == 0) {
- return loc_database_enumerator_set_flag(enumerator,
- LOC_NETWORK_FLAG_ANYCAST);
- }
+ return loc_country_list_ref(enumerator->countries);
+}
- // Country codes must be two characters
- if (!loc_country_code_is_valid(country_code))
- return -EINVAL;
+LOC_EXPORT int loc_database_enumerator_set_countries(
+ struct loc_database_enumerator* enumerator, struct loc_country_list* countries) {
+ if (enumerator->countries)
+ loc_country_list_unref(enumerator->countries);
- for (unsigned int i = 0; i < 3; i++) {
- enumerator->country_code[i] = country_code[i];
- }
+ enumerator->countries = loc_country_list_ref(countries);
return 0;
}
-LOC_EXPORT int loc_database_enumerator_set_asn(
- struct loc_database_enumerator* enumerator, unsigned int asn) {
- enumerator->asn = asn;
+LOC_EXPORT struct loc_as_list* loc_database_enumerator_get_asns(
+ struct loc_database_enumerator* enumerator) {
+ if (!enumerator->asns)
+ return NULL;
+
+ return loc_as_list_ref(enumerator->asns);
+}
+
+LOC_EXPORT int loc_database_enumerator_set_asns(
+ struct loc_database_enumerator* enumerator, struct loc_as_list* asns) {
+ if (enumerator->asns)
+ loc_as_list_unref(enumerator->asns);
+
+ enumerator->asns = loc_as_list_ref(asns);
return 0;
}
return 0;
}
-LOC_EXPORT int loc_database_enumerator_next_network(
- struct loc_database_enumerator* enumerator, struct loc_network** network) {
- // Reset network
- *network = NULL;
+static int loc_database_enumerator_filter_network(
+ struct loc_database_enumerator* enumerator, struct loc_network* network) {
+ // Skip if the family does not match
+ if (enumerator->family && loc_network_address_family(network) != enumerator->family) {
+ DEBUG(enumerator->ctx, "Filtered network %p because of family not matching\n", network);
+ return 1;
+ }
- // Do not do anything if not in network mode
- if (enumerator->mode != LOC_DB_ENUMERATE_NETWORKS)
- return 0;
+ // Skip if the country code does not match
+ if (enumerator->countries && !loc_country_list_empty(enumerator->countries)) {
+ const char* country_code = loc_network_get_country_code(network);
- int r;
+ if (!loc_country_list_contains_code(enumerator->countries, country_code)) {
+ DEBUG(enumerator->ctx, "Filtered network %p because of country code not matching\n", network);
+ return 1;
+ }
+ }
+
+ // Skip if the ASN does not match
+ if (enumerator->asns && !loc_as_list_empty(enumerator->asns)) {
+ uint32_t asn = loc_network_get_asn(network);
+
+ if (!loc_as_list_contains_number(enumerator->asns, asn)) {
+ DEBUG(enumerator->ctx, "Filtered network %p because of ASN not matching\n", network);
+ return 1;
+ }
+ }
+
+ // Skip if flags do not match
+ if (enumerator->flags && !loc_network_match_flag(network, enumerator->flags)) {
+ DEBUG(enumerator->ctx, "Filtered network %p because of flags not matching\n", network);
+ return 1;
+ }
+
+ // Do not filter
+ return 0;
+}
+
+static int __loc_database_enumerator_next_network(
+ struct loc_database_enumerator* enumerator, struct loc_network** network, int filter) {
+ // Return top element from the stack
+ while (1) {
+ *network = loc_network_list_pop_first(enumerator->stack);
+
+ // Stack is empty
+ if (!*network)
+ break;
+
+ // Throw away any networks by filter
+ if (filter && loc_database_enumerator_filter_network(enumerator, *network)) {
+ loc_network_unref(*network);
+ *network = NULL;
+ continue;
+ }
+
+ // Return result
+ return 0;
+ }
DEBUG(enumerator->ctx, "Called with a stack of %u nodes\n",
enumerator->network_stack_depth);
enumerator->db->network_nodes_v1 + node->offset;
// Add edges to stack
- r = loc_database_enumerator_stack_push_node(enumerator,
+ int r = loc_database_enumerator_stack_push_node(enumerator,
be32toh(n->one), 1, node->depth + 1);
if (r)
if (r)
return r;
- // Check if we are interested in this network
+ // Return all networks when the filter is disabled
+ if (!filter)
+ return 0;
- // Skip if the family does not match
- if (enumerator->family && loc_network_address_family(*network) != enumerator->family) {
+ // Check if we are interested in this network
+ if (loc_database_enumerator_filter_network(enumerator, *network)) {
loc_network_unref(*network);
*network = NULL;
continue;
}
- // Skip if the country code does not match
- if (*enumerator->country_code &&
- !loc_network_match_country_code(*network, enumerator->country_code)) {
- loc_network_unref(*network);
- *network = NULL;
+ return 0;
+ }
+ }
- continue;
- }
+ // Reached the end of the search
+ return 0;
+}
- // Skip if the ASN does not match
- if (enumerator->asn &&
- !loc_network_match_asn(*network, enumerator->asn)) {
- loc_network_unref(*network);
- *network = NULL;
+static int __loc_database_enumerator_next_network_flattened(
+ struct loc_database_enumerator* enumerator, struct loc_network** network) {
+ // Fetch the next network
+ int r = __loc_database_enumerator_next_network(enumerator, network, 1);
+ if (r)
+ return r;
- continue;
- }
+ // End if we could not read another network
+ if (!*network)
+ return 0;
- // Skip if flags do not match
- if (enumerator->flags &&
- !loc_network_match_flag(*network, enumerator->flags)) {
- loc_network_unref(*network);
- *network = NULL;
+ struct loc_network* subnet = NULL;
+ struct loc_network_list* subnets;
+
+ // Create a list with all subnets
+ r = loc_network_list_new(enumerator->ctx, &subnets);
+ if (r)
+ return r;
+
+ // Search all subnets from the database
+ while (1) {
+ // Fetch the next network in line
+ r = __loc_database_enumerator_next_network(enumerator, &subnet, 0);
+ if (r) {
+ loc_network_unref(subnet);
+ loc_network_list_unref(subnets);
+
+ return r;
+ }
+
+ // End if we did not receive another subnet
+ if (!subnet)
+ break;
+
+ // Collect all subnets in a list
+ if (loc_network_is_subnet(*network, subnet)) {
+ r = loc_network_list_push(subnets, subnet);
+ if (r) {
+ loc_network_unref(subnet);
+ loc_network_list_unref(subnets);
+
+ return r;
}
- return 0;
+ loc_network_unref(subnet);
+ continue;
+ }
+
+ // If this is not a subnet, we push it back onto the stack and break
+ r = loc_network_list_push(enumerator->stack, subnet);
+ if (r) {
+ loc_network_unref(subnet);
+ loc_network_list_unref(subnets);
+
+ return r;
}
+
+ loc_network_unref(subnet);
+ break;
}
- // Reached the end of the search
+ DEBUG(enumerator->ctx, "Found %zu subnet(s)\n", loc_network_list_size(subnets));
+
+ // We can abort here if the network has no subnets
+ if (loc_network_list_empty(subnets)) {
+ loc_network_list_unref(subnets);
+
+ return 0;
+ }
+
+ // If the network has any subnets, we will break it into smaller parts
+ // without the subnets.
+ struct loc_network_list* excluded = loc_network_exclude_list(*network, subnets);
+ if (!excluded) {
+ loc_network_list_unref(subnets);
+ return -1;
+ }
+
+ // Merge subnets onto the stack
+ r = loc_network_list_merge(enumerator->stack, subnets);
+ if (r) {
+ loc_network_list_unref(subnets);
+ loc_network_list_unref(excluded);
+
+ return r;
+ }
+
+ // Push excluded list onto the stack
+ r = loc_network_list_merge(enumerator->stack, excluded);
+ if (r) {
+ loc_network_list_unref(subnets);
+ loc_network_list_unref(excluded);
+
+ return r;
+ }
+
+ loc_network_list_unref(subnets);
+ loc_network_list_unref(excluded);
+
+ // Drop the network and restart the whole process again to pick the next network
+ loc_network_unref(*network);
+
+ return __loc_database_enumerator_next_network_flattened(enumerator, network);
+}
- // Mark all nodes as non-visited
- for (unsigned int i = 0; i < enumerator->db->network_nodes_count; i++)
- enumerator->networks_visited[i] = 0;
+LOC_EXPORT int loc_database_enumerator_next_network(
+ struct loc_database_enumerator* enumerator, struct loc_network** network) {
+ // Do not do anything if not in network mode
+ if (enumerator->mode != LOC_DB_ENUMERATE_NETWORKS)
+ return 0;
+
+ // Flatten output?
+ if (enumerator->flatten)
+ return __loc_database_enumerator_next_network_flattened(enumerator, network);
+
+ return __loc_database_enumerator_next_network(enumerator, network, 1);
+}
+
+LOC_EXPORT int loc_database_enumerator_next_country(
+ struct loc_database_enumerator* enumerator, struct loc_country** country) {
+ *country = NULL;
+
+ // Do not do anything if not in country mode
+ if (enumerator->mode != LOC_DB_ENUMERATE_COUNTRIES)
+ return 0;
+ struct loc_database* db = enumerator->db;
+
+ while (enumerator->country_index < db->countries_count) {
+ // Fetch the next country
+ int r = loc_database_fetch_country(db, country, enumerator->country_index++);
+ if (r)
+ return r;
+
+ // We do not filter here, so it always is a match
+ return 0;
+ }
+
+ // Reset the index
+ enumerator->country_index = 0;
+
+ // We have searched through all of them
return 0;
}
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