#include <string.h>
#include <loc/libloc.h>
+#include <loc/country.h>
#include <loc/network.h>
#include <loc/private.h>
char country_code[3];
uint32_t asn;
+ enum loc_network_flags flags;
};
static int valid_prefix(struct in6_addr* address, unsigned int prefix) {
for (unsigned int i = 0; i < 16; i++)
bitmask.s6_addr[i] = 0;
- for (unsigned int i = prefix, j = 0; i > 0; i -= 8, j++) {
+ for (int i = prefix, j = 0; i > 0; i -= 8, j++) {
if (i >= 8)
bitmask.s6_addr[j] = 0xff;
else
return bitmask;
}
-static struct in6_addr make_start_address(struct in6_addr* address, unsigned int prefix) {
+static struct in6_addr make_start_address(const struct in6_addr* address, unsigned int prefix) {
struct in6_addr a;
struct in6_addr bitmask = prefix_to_bitmask(prefix);
return a;
}
+static struct in6_addr make_last_address(const struct in6_addr* address, unsigned int prefix) {
+ struct in6_addr a;
+ struct in6_addr bitmask = prefix_to_bitmask(prefix);
+
+ // Perform bitwise OR
+ for (unsigned int i = 0; i < 4; i++)
+ a.s6_addr32[i] = address->s6_addr32[i] | ~bitmask.s6_addr32[i];
+
+ return a;
+}
+
LOC_EXPORT int loc_network_new(struct loc_ctx* ctx, struct loc_network** network,
struct in6_addr* address, unsigned int prefix) {
// Address cannot be unspecified
- if (IN6_IS_ADDR_UNSPECIFIED(&address)) {
+ if (IN6_IS_ADDR_UNSPECIFIED(address)) {
DEBUG(ctx, "Start address is unspecified\n");
return -EINVAL;
}
// Address cannot be loopback
- if (IN6_IS_ADDR_LOOPBACK(&address)) {
+ if (IN6_IS_ADDR_LOOPBACK(address)) {
DEBUG(ctx, "Start address is loopback address\n");
return -EINVAL;
}
// Address cannot be link-local
- if (IN6_IS_ADDR_LINKLOCAL(&address)) {
+ if (IN6_IS_ADDR_LINKLOCAL(address)) {
DEBUG(ctx, "Start address cannot be link-local\n");
return -EINVAL;
}
// Address cannot be site-local
- if (IN6_IS_ADDR_SITELOCAL(&address)) {
+ if (IN6_IS_ADDR_SITELOCAL(address)) {
DEBUG(ctx, "Start address cannot be site-local\n");
return -EINVAL;
}
return AF_INET6;
}
-static int parse_address(struct loc_ctx* ctx, const char* string, struct in6_addr* address) {
- DEBUG(ctx, "Paring IP address %s\n", string);
-
- // Try parsing this as an IPv6 address
- int r = inet_pton(AF_INET6, string, address);
-
- // If inet_pton returns one it has been successful
- if (r == 1) {
- DEBUG(ctx, "%s is an IPv6 address\n", string);
- return 0;
- }
-
- // Try parsing this as an IPv4 address
- struct in_addr ipv4_address;
- r = inet_pton(AF_INET, string, &ipv4_address);
- if (r == 1) {
- DEBUG(ctx, "%s is an IPv4 address\n", string);
-
- // Convert to IPv6-mapped address
- address->s6_addr32[0] = htonl(0x0000);
- address->s6_addr32[1] = htonl(0x0000);
- address->s6_addr32[2] = htonl(0xffff);
- address->s6_addr32[3] = ipv4_address.s_addr;
-
- return 0;
- }
-
- DEBUG(ctx, "%s is not an valid IP address\n", string);
- return 1;
-}
-
LOC_EXPORT int loc_network_new_from_string(struct loc_ctx* ctx, struct loc_network** network,
const char* address_string) {
struct in6_addr start_address;
if (prefix) {
// Parse the address
- r = parse_address(ctx, address_string, &start_address);
+ r = loc_parse_address(ctx, address_string, &start_address);
// Map the prefix to IPv6 if needed
if (IN6_IS_ADDR_V4MAPPED(&start_address))
}
LOC_EXPORT struct loc_network* loc_network_unref(struct loc_network* network) {
+ if (!network)
+ return NULL;
+
if (--network->refcount > 0)
return network;
return NULL;
}
-static int format_ipv6_address(struct loc_network* network, char* string, size_t length) {
- const char* ret = inet_ntop(AF_INET6, &network->start_address, string, length);
+static int format_ipv6_address(const struct in6_addr* address, char* string, size_t length) {
+ const char* ret = inet_ntop(AF_INET6, address, string, length);
if (!ret)
return -1;
return 0;
}
-static int format_ipv4_address(struct loc_network* network, char* string, size_t length) {
+static int format_ipv4_address(const struct in6_addr* address, char* string, size_t length) {
struct in_addr ipv4_address;
- ipv4_address.s_addr = network->start_address.s6_addr32[3];
+ ipv4_address.s_addr = address->s6_addr32[3];
const char* ret = inet_ntop(AF_INET, &ipv4_address, string, length);
if (!ret)
int family = loc_network_address_family(network);
switch (family) {
case AF_INET6:
- r = format_ipv6_address(network, string, length);
+ r = format_ipv6_address(&network->start_address, string, length);
break;
case AF_INET:
- r = format_ipv4_address(network, string, length);
+ r = format_ipv4_address(&network->start_address, string, length);
prefix -= 96;
break;
return string;
}
+LOC_EXPORT int loc_network_match_address(struct loc_network* network, const struct in6_addr* address) {
+ // Address must be larger than the start address
+ if (in6_addr_cmp(&network->start_address, address) > 0)
+ return 1;
+
+ // Determine the last address in this network
+ struct in6_addr last_address = make_last_address(&network->start_address, network->prefix);
+
+ // Address must be smaller than the last address
+ if (in6_addr_cmp(address, &last_address) > 0)
+ return 1;
+
+ // The address is inside this network
+ return 0;
+}
+
LOC_EXPORT const char* loc_network_get_country_code(struct loc_network* network) {
return network->country_code;
}
LOC_EXPORT int loc_network_set_country_code(struct loc_network* network, const char* country_code) {
- // Country codes must be two characters
- if (strlen(country_code) != 2)
+ // Set empty country code
+ if (!country_code || !*country_code) {
+ *network->country_code = '\0';
+ return 0;
+ }
+
+ // Check country code
+ if (!loc_country_code_is_valid(country_code))
return -EINVAL;
- for (unsigned int i = 0; i < 3; i++) {
- network->country_code[i] = country_code[i];
- }
+ loc_country_code_copy(network->country_code, country_code);
return 0;
}
+LOC_EXPORT int loc_network_match_country_code(struct loc_network* network, const char* country_code) {
+ // Check country code
+ if (!loc_country_code_is_valid(country_code))
+ return -EINVAL;
+
+ return (network->country_code[0] == country_code[0])
+ && (network->country_code[1] == country_code[1]);
+}
+
LOC_EXPORT uint32_t loc_network_get_asn(struct loc_network* network) {
return network->asn;
}
return 0;
}
-LOC_EXPORT int loc_network_to_database_v0(struct loc_network* network, struct loc_database_network_v0* dbobj) {
- dbobj->prefix = network->prefix;
+LOC_EXPORT int loc_network_match_asn(struct loc_network* network, uint32_t asn) {
+ return network->asn == asn;
+}
+
+LOC_EXPORT int loc_network_has_flag(struct loc_network* network, uint32_t flag) {
+ return network->flags & flag;
+}
+
+LOC_EXPORT int loc_network_set_flag(struct loc_network* network, uint32_t flag) {
+ network->flags |= flag;
+
+ return 0;
+}
+
+LOC_EXPORT int loc_network_match_flag(struct loc_network* network, uint32_t flag) {
+ return loc_network_has_flag(network, flag);
+}
+LOC_EXPORT int loc_network_to_database_v0(struct loc_network* network, struct loc_database_network_v0* dbobj) {
// Add country code
- for (unsigned int i = 0; i < 2; i++) {
- dbobj->country_code[i] = network->country_code ? network->country_code[i] : '\0';
- }
+ loc_country_code_copy(dbobj->country_code, network->country_code);
// Add ASN
dbobj->asn = htobe32(network->asn);
+ // Flags
+ dbobj->flags = htobe16(network->flags);
+
return 0;
}
LOC_EXPORT int loc_network_new_from_database_v0(struct loc_ctx* ctx, struct loc_network** network,
- struct in6_addr* address, const struct loc_database_network_v0* dbobj) {
- int r = loc_network_new(ctx, network, address, dbobj->prefix);
+ struct in6_addr* address, unsigned int prefix, const struct loc_database_network_v0* dbobj) {
+ char country_code[3];
+
+ int r = loc_network_new(ctx, network, address, prefix);
if (r)
return r;
// Import country code
- char country_code[3];
- for (unsigned int i = 0; i < 2; i++) {
- country_code[i] = dbobj->country_code[i];
- }
- country_code[2] = '\0';
+ loc_country_code_copy(country_code, dbobj->country_code);
r = loc_network_set_country_code(*network, country_code);
if (r)
if (r)
return r;
+ // Import flags
+ r = loc_network_set_flag(*network, be16toh(dbobj->flags));
+ if (r)
+ return r;
+
return 0;
}
static struct loc_network_tree_node* loc_network_tree_get_node(struct loc_network_tree_node* node, int path) {
struct loc_network_tree_node** n;
- if (path)
+ if (path == 0)
n = &node->zero;
else
n = &node->one;
return *n;
}
-static struct loc_network_tree_node* loc_network_tree_get_path(struct loc_network_tree* tree, const struct in6_addr* address) {
+static struct loc_network_tree_node* loc_network_tree_get_path(struct loc_network_tree* tree, const struct in6_addr* address, unsigned int prefix) {
struct loc_network_tree_node* node = tree->root;
- for (unsigned int i = 127; i > 0; i--) {
+ for (unsigned int i = 0; i < prefix; i++) {
// Check if the ith bit is one or zero
- node = loc_network_tree_get_node(node, ((address->s6_addr32[i / 32] & (1 << (i % 32))) == 0));
+ node = loc_network_tree_get_node(node, in6_addr_get_bit(address, i));
}
return node;
LOC_EXPORT int loc_network_tree_add_network(struct loc_network_tree* tree, struct loc_network* network) {
DEBUG(tree->ctx, "Adding network %p to tree %p\n", network, tree);
- struct loc_network_tree_node* node = loc_network_tree_get_path(tree, &network->start_address);
+ struct loc_network_tree_node* node = loc_network_tree_get_path(tree,
+ &network->start_address, network->prefix);
if (!node) {
ERROR(tree->ctx, "Could not find a node\n");
return -ENOMEM;
// Check if node has not been set before
if (node->network) {
DEBUG(tree->ctx, "There is already a network at this path\n");
- return 1;
+ return -EBUSY;
}
// Point node to the network