improve easy interface resolving timeout handling in c-ares enabled builds

lib/hostares.c

@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -143,30 +143,27 @@ static int ares_waitperform(struct connectdata *conn, int timeout_ms)
   int bitmask;
   int socks[ARES_GETSOCK_MAXNUM];
   struct pollfd pfd[ARES_GETSOCK_MAXNUM];
-  int m;
   int i;
-  int num;
+  int num = 0;
 
   bitmask = ares_getsock(data->state.areschannel, socks, ARES_GETSOCK_MAXNUM);
 
   for(i=0; i < ARES_GETSOCK_MAXNUM; i++) {
     pfd[i].events = 0;
-    m=0;
+    pfd[i].revents = 0;
     if(ARES_GETSOCK_READABLE(bitmask, i)) {
       pfd[i].fd = socks[i];
       pfd[i].events |= POLLRDNORM|POLLIN;
-      m=1;
     }
     if(ARES_GETSOCK_WRITABLE(bitmask, i)) {
       pfd[i].fd = socks[i];
       pfd[i].events |= POLLWRNORM|POLLOUT;
-      m=1;
     }
-    pfd[i].revents=0;
-    if(!m)
+    if(pfd[i].events != 0)
+      num++;
+    else
       break;
   }
-  num = i;
 
   if(num)
     nfds = Curl_poll(pfd, num, timeout_ms);
@@ -233,6 +230,7 @@ CURLcode Curl_wait_for_resolv(struct connectdata *conn,
   CURLcode rc=CURLE_OK;
   struct SessionHandle *data = conn->data;
   long timeout;
+  struct timeval now = Curl_tvnow();
 
   /* now, see if there's a connect timeout or a regular timeout to
      use instead of the default one */
@@ -246,11 +244,13 @@ CURLcode Curl_wait_for_resolv(struct connectdata *conn,
   /* Wait for the name resolve query to complete. */
   while(1) {
     struct timeval *tvp, tv, store;
-    struct timeval now = Curl_tvnow();
     long timediff;
+    int itimeout;
 
-    store.tv_sec = (int)timeout/1000;
-    store.tv_usec = (timeout%1000)*1000;
+    itimeout = (timeout > (long)INT_MAX) ? INT_MAX : (int)timeout;
+
+    store.tv_sec = itimeout/1000;
+    store.tv_usec = (itimeout%1000)*1000;
 
     tvp = ares_timeout(data->state.areschannel, &store, &tv);