sync ssld with ratbox3 repository: now r25594 + charybdis related changes

ssld/ssld.c

@@ -18,7 +18,7 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
  *  USA
  *
- *  $Id: ssld.c 25221 2008-04-09 22:12:16Z jilles $
+ *  $Id: ssld.c 25594 2008-06-25 14:58:47Z androsyn $
  */
 
 
@@ -38,41 +38,34 @@ static void setup_signals(void);
 static inline rb_int32_t buf_to_int32(char *buf)
 {
 	rb_int32_t x;
-	x = *buf << 24;
+	memcpy(&x, buf, sizeof(x));
-	x |= *(++buf) << 16;
-	x |= *(++buf) << 8;
-	x |= *(++buf);
 	return x;
 }
 
 static inline void int32_to_buf(char *buf, rb_int32_t x)
 {
-	*(buf)   = x >> 24 & 0xFF;
+	memcpy(buf, &x, sizeof(x));
-	*(++buf) = x >> 16 & 0xFF; 
-	*(++buf) = x >> 8 & 0xFF;
-	*(++buf) = x & 0xFF;
 	return;
 }
 
 static inline rb_uint16_t buf_to_uint16(char *buf)
 {
 	rb_uint16_t x;
-	x = *(buf) << 8;
+	memcpy(&x, buf, sizeof(x));
-	x |= *(++buf);
 	return x;
 }
 
 static inline void uint16_to_buf(char *buf, rb_uint16_t x)
 {
-	*(buf) = x >> 8 & 0xFF;
+	memcpy(buf, &x, sizeof(x));
-	*(++buf) = x & 0xFF;
 	return;
 }
  
 
-
 static char inbuf[READBUF_SIZE];
+#ifdef HAVE_LIBZ
 static char outbuf[READBUF_SIZE];
+#endif
 
 typedef struct _mod_ctl_buf
 {
@@ -154,9 +147,13 @@ typedef struct _conn
 #define NO_WAIT 0x0
 #define WAIT_PLAIN 0x1
 
+#define HASH_WALK_SAFE(i, max, ptr, next, table) for(i = 0; i < max; i++) { RB_DLINK_FOREACH_SAFE(ptr, next, table[i].head)
+#define HASH_WALK_END }
 #define CONN_HASH_SIZE 2000
 #define connid_hash(x)	(&connid_hash_table[(x % CONN_HASH_SIZE)])
 
+
+
 static rb_dlink_list connid_hash_table[CONN_HASH_SIZE];
 static rb_dlink_list dead_list;
 
@@ -173,6 +170,9 @@ static int zlib_ok = 1;
 #else
 static int zlib_ok = 0;
 #endif
+
+
+#ifdef HAVE_LIBZ
 static void *
 ssld_alloc(void *unused, size_t count, size_t size)
 {
@@ -184,6 +184,7 @@ ssld_free(void *unused, void *ptr)
 {
 	rb_free(ptr);	
 }
+#endif
 
 static conn_t *
 conn_find_by_id(rb_int32_t id)
@@ -212,12 +213,14 @@ free_conn(conn_t * conn)
 {
 	rb_free_rawbuffer(conn->modbuf_out);
 	rb_free_rawbuffer(conn->plainbuf_out);
+#ifdef HAVE_LIBZ
 	if(IsZip(conn))
 	{
 		zlib_stream_t *stream = conn->stream;
 		inflateEnd(&stream->instream);
 		deflateEnd(&stream->outstream);		
 	}
+#endif
 	rb_free(conn);
 }
 
@@ -287,6 +290,30 @@ make_conn(mod_ctl_t *ctl, rb_fde_t * mod_fd, rb_fde_t * plain_fd)
 	return conn;
 }
 
+static void
+check_handshake_flood(void *unused)
+{
+	conn_t *conn;
+	rb_dlink_node *ptr, *next;
+	unsigned int count;
+	int i;
+	HASH_WALK_SAFE(i, CONN_HASH_SIZE, ptr, next, connid_hash_table)
+	{
+		conn = ptr->data;
+		if(!IsSSL(conn))
+			continue;
+				
+		count = rb_ssl_handshake_count(conn->mod_fd);
+		/* nothing needs to do this more than twice in ten seconds i don't think */
+		if(count > 2)
+			close_conn(conn, WAIT_PLAIN, "Handshake flooding");
+		else
+			rb_ssl_clear_handshake_count(conn->mod_fd);
+	} 
+	HASH_WALK_END
+
+}
+
 static void
 conn_mod_write_sendq(rb_fde_t * fd, void *data)
 {
@@ -1031,7 +1058,7 @@ main(int argc, char **argv)
 	if(s_ctlfd == NULL || s_pipe == NULL)
 	{
 		fprintf(stderr, "This is ircd-ratbox ssld.  You know you aren't supposed to run me directly?\n");
-		fprintf(stderr, "You get an Id tag for this: $Id: ssld.c 25221 2008-04-09 22:12:16Z jilles $\n");
+		fprintf(stderr, "You get an Id tag for this: $Id: ssld.c 25594 2008-06-25 14:58:47Z androsyn $\n");
 		fprintf(stderr, "Have a nice life\n");
 		exit(1);
 	}
@@ -1070,6 +1097,7 @@ main(int argc, char **argv)
 	rb_set_nb(mod_ctl->F);
 	rb_set_nb(mod_ctl->F_pipe);
 	rb_event_addish("clean_dead_conns", clean_dead_conns, NULL, 10);
+	rb_event_add("check_handshake_flood", check_handshake_flood, NULL, 10);
 	read_pipe_ctl(mod_ctl->F_pipe, NULL);
 	mod_read_ctl(mod_ctl->F, mod_ctl);
 	if(!zlib_ok && !ssl_ok)