[PATCH] Fix pam_access addrinfo loops

[Dan Yefimov]

				Hello!
	Linux-PAM 0.99.5.0 has problems with pam_access module. In function 
from_match() loop at lines from 547 up to 567 follows addrinfo chain 
incorrectly. It only follows the chain if current addrinfo structure has 
ai_family field equal to AF_INET and releases the entire chain at the end of
the first iteration. Additionally, getaddrinfo() is called with AI_ADDRCONF 
flag, which is both excessive in that context and defined not in every system. 
Attached patch fixes both issues. Please apply.
-- 

    Sincerely Your, Dan.
-------------- next part --------------
Drop unnecessary AI_ADDRCONF flag. The more that not all systems have support
for it. Also fix loop looking up AF_INET address chain: chain following
expression is relocated to the right place at the end of the loop,
freeaddrinfo() call is relocated to the place right after the end of loop.
--- modules/pam_access/pam_access.c.gai	2006-02-07 10:57:36.000000000 +0300
+++ modules/pam_access/pam_access.c	2006-07-01 21:43:41.000000000 +0400
@@ -535,7 +535,7 @@
       struct addrinfo hint;
 
       memset (&hint, '\0', sizeof (hint));
-      hint.ai_flags = AI_ADDRCONFIG | AI_CANONNAME;
+      hint.ai_flags = AI_CANONNAME;
       hint.ai_family = AF_INET;
 
       if (getaddrinfo (string, NULL, &hint, &res) != 0)
@@ -561,10 +561,10 @@
 		      freeaddrinfo (res);
 		      return YES;
 		    }
-		  runp = runp->ai_next;
 		}
-	      freeaddrinfo (res);
+	      runp = runp->ai_next;
 	    }
+	  freeaddrinfo (res);
 	}
     } else  if (isipaddr(string, NULL, NULL) == YES) {
       /* Assume network/netmask with a IP of a host.  */
@@ -576,7 +576,7 @@
       struct addrinfo hint;
 
       memset (&hint, '\0', sizeof (hint));
-      hint.ai_flags = AI_ADDRCONFIG | AI_CANONNAME;
+      hint.ai_flags = AI_CANONNAME;
       hint.ai_family = AF_UNSPEC;
 
       if (getaddrinfo (string, NULL, &hint, &res) != 0)