From c19d13200ad1ca00d61fa046232faa83ef263c6f Mon Sep 17 00:00:00 2001
From: Amos Jeffries <amosjeffries@squid-cache.org>
Date: Mon, 9 Aug 2010 05:06:36 -0600
Subject: [PATCH] Bug 2997: visible_hostname directive no longer matches docs

---
 src/tools.cc | 57 ++++++++++++++++++++++++++--------------------------
 1 file changed, 28 insertions(+), 29 deletions(-)

diff --git a/src/tools.cc b/src/tools.cc
index 2294b6ba1e..6743604fe4 100644
--- a/src/tools.cc
+++ b/src/tools.cc
@@ -644,43 +644,42 @@ getMyHostname(void)
         }
 
         sa.FreeAddrInfo(AI);
-        debugs(50, 1, "WARNING: failed to resolve " << sa << " to a fully qualified hostname");
+        debugs(50, 2, "WARNING: failed to resolve " << sa << " to a fully qualified hostname");
+    }
+
+    // still no host. fallback to gethostname()
+    if (gethostname(host, SQUIDHOSTNAMELEN) < 0) {
+        debugs(50, DBG_IMPORTANT, "WARNING: gethostname failed: " << xstrerror());
     } else {
-        if (gethostname(host, SQUIDHOSTNAMELEN) < 0) {
-            debugs(50, 1, "WARNING: gethostname failed: " << xstrerror());
-        } else {
-            /* Verify that the hostname given resolves properly */
-            struct addrinfo hints;
-            memset(&hints, 0, sizeof(addrinfo));
-            hints.ai_flags = AI_CANONNAME;
-
-            if (getaddrinfo(host, NULL, NULL, &AI) == 0) {
-                /* DNS lookup successful */
-                /* use the official name from DNS lookup */
-                debugs(50, 6, "getMyHostname: '" << host << "' has rDNS.");
-                present = 1;
-
-                /* AYJ: do we want to flag AI_ALL and cache the result anywhere. ie as our local host IPs? */
-                if (AI) {
-                    freeaddrinfo(AI);
-                    AI = NULL;
-                }
+        /* Verify that the hostname given resolves properly */
+        struct addrinfo hints;
+        memset(&hints, 0, sizeof(addrinfo));
+        hints.ai_flags = AI_CANONNAME;
 
-                return host;
+        if (getaddrinfo(host, NULL, NULL, &AI) == 0) {
+            /* DNS lookup successful */
+            /* use the official name from DNS lookup */
+            debugs(50, 6, "getMyHostname: '" << host << "' has DNS resolution.");
+            present = 1;
+
+            /* AYJ: do we want to flag AI_ALL and cache the result anywhere. ie as our local host IPs? */
+            if (AI) {
+                freeaddrinfo(AI);
+                AI = NULL;
             }
 
-            if (AI) freeaddrinfo(AI);
-            debugs(50, 1, "WARNING: '" << host << "' rDNS test failed: " << xstrerror());
+            return host;
         }
+
+        if (AI) freeaddrinfo(AI);
+        debugs(50, DBG_IMPORTANT, "WARNING: '" << host << "' rDNS test failed: " << xstrerror());
     }
 
-    /* throw a fatal configuration error when the Host/IP given has bad DNS/rDNS. */
-    if (opt_send_signal == -1)
-        fatal("Could not determine fully qualified hostname.  Please set 'visible_hostname'\n");
-    else
-        return ("localhost");
+    /* throw a configuration error when the Host/IP given has bad DNS/rDNS. */
+    debugs(50, DBG_CRITICAL, "WARNING: Could not determine this machines public hostname. " <<
+           "Please configure one or set 'visible_hostname'.");
 
-    return NULL;		/* keep compiler happy */
+    return ("localhost");
 }
 
 const char *
-- 
2.47.2