From: Thomas Uehlinger <uehli@...>
Date: 2004-02-06T07:03:12+09:00
Subject: Patch for socket.c: control reverse lookup for every instance

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Hi all

While experimenting with Webrick I felt that it would be nice if I could control for every socket whether reverse lookup should be done or not (instead of using the global BasicSocket.do_not_reverse_lookup flag).

So I created the attached patch for socket.c.

Usage is now for example as follows:

require 'socket'

sock = TCPSocket.new(...)
sock.do_not_reverse_lookup = true

[use the socket...]


What do you thing about that?

-- Thomas Uehlinger

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--- socket_old.c	2004-02-05 22:44:19.996780704 +0100
+++ socket.c	2004-02-05 22:52:38.644974656 +0100
@@ -64,8 +64,6 @@
 #endif
 #include "sockport.h"
 
-static int do_not_reverse_lookup = 0;
-
 VALUE rb_cBasicSocket;
 VALUE rb_cIPSocket;
 VALUE rb_cTCPSocket;
@@ -392,7 +390,24 @@
     return INT2FIX(n);
 }
 
-static VALUE ipaddr _((struct sockaddr*));
+static VALUE
+bsock_do_not_reverse_lookup(obj)
+    VALUE obj;
+{
+    return rb_ivar_get(obj, rb_intern("@do_not_reverse_lookup"));
+}
+
+static VALUE
+bsock_do_not_reverse_lookup_set(obj, state)
+    VALUE obj;
+    VALUE state;
+{
+    rb_secure(4);
+    return rb_ivar_set(obj, rb_intern("@do_not_reverse_lookup"), state);
+}
+
+
+static VALUE ipaddr _((VALUE, struct sockaddr*));
 #ifdef HAVE_SYS_UN_H
 static VALUE unixaddr _((struct sockaddr_un*));
 #endif
@@ -460,7 +475,7 @@
 	    rb_raise(rb_eTypeError, "sockaddr size differs - should not happen");
 	}
 #endif
-	return rb_assoc_new(str, ipaddr((struct sockaddr*)buf));
+	return rb_assoc_new(str, ipaddr(sock, (struct sockaddr*)buf));
 #ifdef HAVE_SYS_UN_H
       case RECV_UNIX:
 	return rb_assoc_new(str, unixaddr((struct sockaddr_un*)buf));
@@ -481,21 +496,6 @@
     return s_recvfrom(sock, argc, argv, RECV_RECV);
 }
 
-static VALUE
-bsock_do_not_rev_lookup()
-{
-    return do_not_reverse_lookup?Qtrue:Qfalse;
-}
-
-static VALUE
-bsock_do_not_rev_lookup_set(self, val)
-    VALUE self, val;
-{
-    rb_secure(4);
-    do_not_reverse_lookup = RTEST(val);
-    return val;
-}
-
 static void
 make_ipaddr0(addr, buf, len)
     struct sockaddr *addr;
@@ -655,14 +655,16 @@
 }
 
 static VALUE
-ipaddr(sockaddr)
+ipaddr(obj, sockaddr)
+    VALUE obj;
     struct sockaddr *sockaddr;
 {
     VALUE family, port, addr1, addr2;
     VALUE ary;
     int error;
     char hbuf[1024], pbuf[1024];
-
+    int do_not_reverse_lookup = 0;
+    
     switch (sockaddr->sa_family) {
     case AF_UNSPEC:
 	family = rb_str_new2("AF_UNSPEC");
@@ -689,6 +691,9 @@
 	family = rb_str_new2(pbuf);
 	break;
     }
+    
+    if (obj) do_not_reverse_lookup = RTEST(rb_ivar_get(obj, rb_intern("@do_not_reverse_lookup")));
+    
     if (!do_not_reverse_lookup) {
 	error = getnameinfo(sockaddr, SA_LEN(sockaddr), hbuf, sizeof(hbuf),
 			    NULL, 0, 0);
@@ -1254,7 +1259,7 @@
 
     if (getsockname(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
 	rb_sys_fail("getsockname(2)");
-    return ipaddr((struct sockaddr*)&addr);
+    return ipaddr(sock, (struct sockaddr*)&addr);
 }
 
 static VALUE
@@ -1269,7 +1274,7 @@
 
     if (getpeername(fileno(fptr->f), (struct sockaddr*)&addr, &len) < 0)
 	rb_sys_fail("getpeername(2)");
-    return ipaddr((struct sockaddr*)&addr);
+    return ipaddr(sock, (struct sockaddr*)&addr);
 }
 
 static VALUE
@@ -1985,7 +1990,7 @@
     }
     base = rb_ary_new();
     for (res = res0; res; res = res->ai_next) {
-	ary = ipaddr(res->ai_addr);
+	ary = ipaddr((VALUE)0, res->ai_addr);
 	if (res->ai_canonname) {
 	    RARRAY(ary)->ptr[2] = rb_str_new2(res->ai_canonname);
 	}
@@ -2385,10 +2390,6 @@
     rb_cBasicSocket = rb_define_class("BasicSocket", rb_cIO);
     rb_undef_method(rb_cBasicSocket, "initialize");
 
-    rb_define_singleton_method(rb_cBasicSocket, "do_not_reverse_lookup",
-			       bsock_do_not_rev_lookup, 0);
-    rb_define_singleton_method(rb_cBasicSocket, "do_not_reverse_lookup=",
-			       bsock_do_not_rev_lookup_set, 1);
     rb_define_singleton_method(rb_cBasicSocket, "for_fd", bsock_s_for_fd, 1);
 
     rb_define_method(rb_cBasicSocket, "close_read", bsock_close_read, 0);
@@ -2400,7 +2401,9 @@
     rb_define_method(rb_cBasicSocket, "getpeername", bsock_getpeername, 0);
     rb_define_method(rb_cBasicSocket, "send", bsock_send, -1);
     rb_define_method(rb_cBasicSocket, "recv", bsock_recv, -1);
-
+    rb_define_method(rb_cBasicSocket, "do_not_reverse_lookup", bsock_do_not_reverse_lookup, 0);
+    rb_define_method(rb_cBasicSocket, "do_not_reverse_lookup=", bsock_do_not_reverse_lookup_set, 1);
+    
     rb_cIPSocket = rb_define_class("IPSocket", rb_cBasicSocket);
     rb_define_global_const("IPsocket", rb_cIPSocket);
     rb_define_method(rb_cIPSocket, "addr", ip_addr, 0);

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