From 7e43f74a37b43f0b4fb5448ac01a3dddd0aa533a Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Mon, 11 Jan 2010 17:14:16 +0000
Subject: Use getaddrinfo(), if available, in resolve_host(). Patch by Martin
 Storsjö <$firstname()$firstname,st>.
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Originally committed as revision 21143 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/os_support.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'libavformat/os_support.c')

diff --git a/libavformat/os_support.c b/libavformat/os_support.c
index 96cd347b9e..87481d674e 100644
--- a/libavformat/os_support.c
+++ b/libavformat/os_support.c
@@ -63,13 +63,34 @@ int inet_aton (const char * str, struct in_addr * add)
 /* resolve host with also IP address parsing */
 int resolve_host(struct in_addr *sin_addr, const char *hostname)
 {
-    struct hostent *hp;
 
     if (!inet_aton(hostname, sin_addr)) {
+#if HAVE_GETADDRINFO
+        struct addrinfo *ai, *cur;
+        struct addrinfo hints;
+        memset(&hints, 0, sizeof(hints));
+        hints.ai_family = AF_INET;
+        if (getaddrinfo(hostname, NULL, &hints, &ai))
+            return -1;
+        /* getaddrinfo returns a linked list of addrinfo structs.
+         * Even if we set ai_family = AF_INET above, make sure
+         * that the returned one actually is of the correct type. */
+        for (cur = ai; cur; cur = cur->ai_next) {
+            if (cur->ai_family == AF_INET) {
+                *sin_addr = ((struct sockaddr_in *)cur->ai_addr)->sin_addr;
+                freeaddrinfo(ai);
+                return 0;
+            }
+        }
+        freeaddrinfo(ai);
+        return -1;
+#else
+        struct hostent *hp;
         hp = gethostbyname(hostname);
         if (!hp)
             return -1;
         memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
+#endif
     }
     return 0;
 }
-- 
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