database: Implement reading a network from the database

[people/ms/libloc.git] / src / database.c

diff --git a/src/database.c b/src/database.c
index f789c690b0a16791e22e17ccf644c791589665a7..dd3e77c20a946426d49e9f2bb2dc098c7a0724f6 100644 (file)
--- a/src/database.c
+++ b/src/database.c
@@ -16,6 +16,7 @@
 
 #include <endian.h>
 #include <errno.h>
+#include <netinet/in.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -30,6 +31,7 @@
 #include <loc/as.h>
 #include <loc/database.h>
 #include <loc/format.h>
+#include <loc/network.h>
 #include <loc/private.h>
 #include <loc/stringpool.h>
 
@@ -369,3 +371,29 @@ LOC_EXPORT int loc_database_get_as(struct loc_database* db, struct loc_as** as,
 
        return 1;
 }
+
+// Returns the network at position pos
+static int loc_database_fetch_network(struct loc_database* db, struct loc_network** network, struct in6_addr* address, off_t pos) {
+       if ((size_t)pos >= db->networks_count)
+               return -EINVAL;
+
+       DEBUG(db->ctx, "Fetching network at position %jd\n", pos);
+
+       int r;
+       switch (db->version) {
+               case 0:
+                       r = loc_network_new_from_database_v0(db->ctx, network, address, db->networks_v0 + pos);
+                       break;
+
+               default:
+                       return -1;
+       }
+
+       if (r == 0) {
+               char* string = loc_network_str(*network);
+               DEBUG(db->ctx, "Got network %s\n", string);
+               free(string);
+       }
+
+       return r;
+}