Rewrite dns command

- Cross platform
- Doesn't depend on external tools

src/common/cfgfiles.c

@@ -417,8 +417,6 @@ const struct prefs vars[] =
 	{"dcc_stall_timeout", P_OFFINT (hex_dcc_stall_timeout), TYPE_INT},
 	{"dcc_timeout", P_OFFINT (hex_dcc_timeout), TYPE_INT},
 
-	{"dnsprogram", P_OFFSET (hex_dnsprogram), TYPE_STR},
-
 	{"flood_ctcp_num", P_OFFINT (hex_flood_ctcp_num), TYPE_INT},
 	{"flood_ctcp_time", P_OFFINT (hex_flood_ctcp_time), TYPE_INT},
 	{"flood_msg_num", P_OFFINT (hex_flood_msg_num), TYPE_INT},
@@ -875,7 +873,6 @@ load_default_config(void)
 		strcpy (prefs.hex_dcc_dir, g_build_filename (g_get_home_dir (), "Downloads", NULL));
 	}
 #endif
-	strcpy (prefs.hex_dnsprogram, "host");
 	strcpy (prefs.hex_gui_ulist_doubleclick, "QUERY %s");
 	strcpy (prefs.hex_input_command_char, "/");
 	strcpy (prefs.hex_irc_logmask, g_build_filename ("%n", "%c.log", NULL));

src/common/hexchat.h

@@ -318,7 +318,6 @@ struct hexchatprefs
 	char hex_dcc_completed_dir[PATHLEN + 1];
 	char hex_dcc_dir[PATHLEN + 1];
 	char hex_dcc_ip[DOMAINLEN + 1];
-	char hex_dnsprogram[72];
 	char hex_gui_ulist_doubleclick[256];
 	char hex_input_command_char[4];
 	char hex_irc_extra_hilight[300];

src/common/inbound.c

@@ -33,6 +33,8 @@
 #define WANTDNS
 #include "inet.h"
 
+#include <gio/gio.h>
+
 #include "hexchat.h"
 #include "util.h"
 #include "ignore.h"
@@ -1270,20 +1272,71 @@ inbound_next_nick (session *sess, char *nick, int error,
 	}
 }
 
+
+static void
+dns_addr_callback (GResolver *resolver, GAsyncResult *result, session *sess)
+{
+	gchar *addr;
+
+	g_return_if_fail (is_session(sess));
+
+	addr = g_resolver_lookup_by_address_finish (resolver, result, NULL);
+	if (addr)
+		PrintTextf (sess, _("Resolved to %s"), addr);
+	else
+		PrintText (sess, _("Not found"));
+}
+
+static void
+dns_name_callback (GResolver *resolver, GAsyncResult *result, session *sess)
+{
+	GList* addrs;
+	gchar* addr;
+	GList* list;
+
+	g_return_if_fail (is_session (sess));
+
+	addrs = g_resolver_lookup_by_name_finish (resolver, result, NULL);
+	if (addrs)
+	{
+		PrintText (sess, _("Resolved to:"));
+
+		for (list = g_list_first (addrs); list; list = g_list_next (list))
+		{
+			addr = g_inet_address_to_string (list->data);
+			PrintTextf (sess, "    %s", addr);
+		}
+
+		g_resolver_free_addresses (addrs);
+	}
+	else
+		PrintText (sess, _("Not found"));
+}
+
 void
 do_dns (session *sess, char *nick, char *host,
-		  const message_tags_data *tags_data)
+const message_tags_data *tags_data)
 {
+	GResolver *res = g_resolver_get_default ();
+	GInetAddress *addr;
 	char *po;
 	char tbuf[1024];
 
 	po = strrchr (host, '@');
 	if (po)
 		host = po + 1;
-	EMIT_SIGNAL_TIMESTAMP (XP_TE_RESOLVINGUSER, sess, nick, host, NULL, NULL, 0,
-								  tags_data->timestamp);
-	snprintf (tbuf, sizeof (tbuf), "exec -d %s %s", prefs.hex_dnsprogram, host);
-	handle_command (sess, tbuf, FALSE);
+
+	if (nick)
+		EMIT_SIGNAL_TIMESTAMP (XP_TE_RESOLVINGUSER, sess, nick, host, NULL, NULL, 0,
+								tags_data->timestamp);
+
+	PrintTextf (sess, _("Looking up %s..."), host);
+
+	addr = g_inet_address_new_from_string (host);
+	if (addr)
+		g_resolver_lookup_by_address_async (res, addr, NULL, dns_addr_callback, sess);
+	else
+		g_resolver_lookup_by_name_async (res, host, NULL, dns_name_callback, sess);
 }
 
 static void

src/common/outbound.c

@@ -1414,21 +1414,17 @@ cmd_discon (struct session *sess, char *tbuf, char *word[], char *word_eol[])
 static int
 cmd_dns (struct session *sess, char *tbuf, char *word[], char *word_eol[])
 {
-#ifdef WIN32
-	PrintText (sess, "DNS is not implemented in Windows.\n");
-	return TRUE;
-#else
 	char *nick = word[2];
 	struct User *user;
+	message_tags_data no_tags = MESSAGE_TAGS_DATA_INIT;
 
 	if (*nick)
 	{
-		if (strchr (nick, '.') == NULL)
+		user = userlist_find (sess, nick);
+		if (user)
 		{
-			user = userlist_find (sess, nick);
-			if (user && user->hostname)
+			if (user->hostname)
 			{
-				message_tags_data no_tags = MESSAGE_TAGS_DATA_INIT;
 				do_dns (sess, user->nick, user->hostname, &no_tags);
 			} else
 			{
@@ -1437,13 +1433,11 @@ cmd_dns (struct session *sess, char *tbuf, char *word[], char *word_eol[])
 			}
 		} else
 		{
-			snprintf (tbuf, TBUFSIZE, "exec -d %s %s", prefs.hex_dnsprogram, nick);
-			handle_command (sess, tbuf, FALSE);
+			do_dns (sess, NULL, nick, &no_tags);
 		}
 		return TRUE;
 	}
 	return FALSE;
-#endif
 }
 
 static int
@@ -3904,7 +3898,7 @@ const struct commands xc_cmds[] = {
 	{"DEVOICE", cmd_devoice, 1, 1, 1,
 	 N_("DEVOICE <nick>, removes voice status from the nick on the current channel (needs chanop)")},
 	{"DISCON", cmd_discon, 0, 0, 1, N_("DISCON, Disconnects from server")},
-	{"DNS", cmd_dns, 0, 0, 1, N_("DNS <nick|host|ip>, Finds a users IP number")},
+	{"DNS", cmd_dns, 0, 0, 1, N_("DNS <nick|host|ip>, Resolves an IP or hostname")},
 	{"ECHO", cmd_echo, 0, 0, 1, N_("ECHO <text>, Prints text locally")},
 #ifndef WIN32
 	{"EXEC", cmd_exec, 0, 0, 1,

src/common/plugin.c

@@ -491,7 +491,6 @@ plugin_auto_load (session *sess)
 	/* a long list of bundled plugins that should be loaded automatically,
 	 * user plugins should go to <config>, leave Program Files alone! */
 	for_files (HEXCHATLIBDIR, "hcchecksum.dll", plugin_auto_load_cb);
-	for_files (HEXCHATLIBDIR, "hcdns.dll", plugin_auto_load_cb);
 	for_files (HEXCHATLIBDIR, "hcdoat.dll", plugin_auto_load_cb);
 	for_files (HEXCHATLIBDIR, "hcexec.dll", plugin_auto_load_cb);
 	for_files (HEXCHATLIBDIR, "hcfishlim.dll", plugin_auto_load_cb);