adding

diff --git a/src/net_db.cc b/src/net_db.cc
new file mode 100644 (file)
index 0000000..f10ec4c
--- /dev/null
+++ b/src/net_db.cc
@@ -0,0 +1,72 @@
+
+#include "squid.h"
+
+#define NET_DB_TTL 3600
+
+static HashID table;
+
+static void
+netdbHashInsert(netdbEntry * n, char *key)
+{
+    hash_insert(table, key, n);
+    meta_data.netdb++;
+    n->link_count++;
+}
+
+static void
+netdbHashDelete(netdbEntry * n, char *key)
+{
+    hash_link *hptr = hash_lookup(table, key);
+    if (hptr == NULL) {
+       debug_trap("netdbHashDelete: key not found");
+       return;
+    }
+    hash_delete_link(table, hptr);
+    meta_data.netdb--;
+    n->link_count--;
+}
+
+static netdbEntry *
+netdbCreate(char *network)
+{
+    netdbEntry *n = xcalloc(1, sizeof(netdbEntry));
+    strncpy(n->network, network, 15);
+    n->expires = squid_curtime + NET_DB_TTL;
+    return n;
+}
+
+netdbEntry *
+netdbLookup(char *key)
+{
+    hash_link *hptr = hash_lookup(table, key);
+    return hptr ? (netdbEntry *) hptr->item : NULL;
+}
+
+static void
+netdbAdd(int fdunused, struct hostent *hp, void *data)
+{
+    netdbEntry *n;
+    LOCAL_ARRAY(char, network, 16);
+    char *hostname = data;
+    if (hp == NULL)
+       return;
+    strcpy(network, inet_ntoa(inaddrFromHostent(hp)));
+    if ((n = netdbLookup(network)) == NULL) {
+       n = netdbCreate(network);
+       netdbHashInsert(n, network);
+    }
+    netdbHashInsert(n, hostname);
+    xfree(hostname);
+}
+
+static void
+netdbMaybeAdd(char *hostname)
+{
+    netdbEntry *n;
+    if ((n = netdbLookup(hostname)) != NULL)
+       return;
+    ipcache_nbgethostbyname(hostname,
+       -1,
+       netdbAdd,
+       (void *) xstrdup(hostname));
+}