From 160d067b046c2ee3296853129d1ea9a99156e2b8 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Thu, 29 Aug 2002 08:51:26 +0000
Subject: (gaih_inet): Fix code to determine canonical name.

---
 sysdeps/posix/getaddrinfo.c | 54 ++++++++++++++++++++++++++++++++++-----------
 time/strptime.c             | 18 +++++++++++----
 2 files changed, 55 insertions(+), 17 deletions(-)

diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
index 5e09a9f..2dc5e90 100644
--- a/sysdeps/posix/getaddrinfo.c
+++ b/sysdeps/posix/getaddrinfo.c
@@ -564,8 +564,6 @@ gaih_inet (const char *name, const struct gaih_service *service,
     /*
       buffer is the size of an unformatted IPv6 address in printable format.
      */
-    char buffer[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"];
-
     while (at2 != NULL)
       {
 	if (req->ai_flags & AI_CANONNAME)
@@ -582,9 +580,6 @@ gaih_inet (const char *name, const struct gaih_service *service,
 		tmpbuflen *= 2;
 		tmpbuf = __alloca (tmpbuflen);
 
-		if (tmpbuf == NULL)
-		  return -EAI_MEMORY;
-
 		rc = __gethostbyaddr_r (at2->addr,
 					((at2->family == AF_INET6)
 					 ? sizeof(struct in6_addr)
@@ -601,10 +596,42 @@ gaih_inet (const char *name, const struct gaih_service *service,
 		return -EAI_SYSTEM;
 	      }
 
-	    if (h == NULL)
-	      c = inet_ntop (at2->family, at2->addr, buffer, sizeof(buffer));
-	    else
+	    if (h != NULL)
 	      c = h->h_name;
+	    else
+	      {
+		/* We have to try to get the canonical in some other
+		   way.  If we are looking for either AF_INET or
+		   AF_INET6 try the other line.  */
+		if (req->ai_family == AF_UNSPEC)
+		  {
+		    struct addrinfo *p = NULL;
+		    struct addrinfo **end = &p;
+		    struct addrinfo localreq = *req;
+		    struct addrinfo *runp;
+
+		    localreq.ai_family = AF_INET + AF_INET6 - at2->family;
+		    (void) gaih_inet (name, service, &localreq, end);
+
+		    runp = p;
+		    while (runp != NULL)
+		      {
+			if (p->ai_canonname != name)
+			  {
+			    c = strdupa (p->ai_canonname);
+			    break;
+			  }
+			runp = runp->ai_next;
+		      }
+
+		    freeaddrinfo (p);
+		  }
+
+		/* If this code is used the missing canonical name is
+		   substituted with the name passed in by the user.  */
+		if (c == NULL)
+		  c = name;
+	      }
 
 	    if (c == NULL)
 	      return GAIH_OKIFUNSPEC | -EAI_NONAME;
@@ -758,10 +785,12 @@ getaddrinfo (const char *name, const char *service,
 		    last_i = i;
 
 		  if (hints->ai_family == AF_UNSPEC && (i & GAIH_OKIFUNSPEC))
-		    continue;
+		    {
+		      ++g;
+		      continue;
+		    }
 
-		  if (p)
-		    freeaddrinfo (p);
+		  freeaddrinfo (p);
 
 		  return -(i & GAIH_EAI);
 		}
@@ -784,8 +813,7 @@ getaddrinfo (const char *name, const char *service,
   if (pai == NULL && last_i == 0)
     return 0;
 
-  if (p)
-    freeaddrinfo (p);
+  freeaddrinfo (p);
 
   return last_i ? -(last_i & GAIH_EAI) : EAI_NONAME;
 }
diff --git a/time/strptime.c b/time/strptime.c
index 5d8fe90..7208dde 100644
--- a/time/strptime.c
+++ b/time/strptime.c
@@ -71,11 +71,19 @@ localtime_r (t, tp)
 
 #define match_char(ch1, ch2) if (ch1 != ch2) return NULL
 #if defined __GNUC__ && __GNUC__ >= 2
-# define match_string(cs1, s2) \
+# ifdef USE_IN_EXTENDED_LOCALE_MODEL
+#  define match_string(cs1, s2) \
+  ({ size_t len = strlen (cs1);						      \
+     int result = __strncasecmp_l ((cs1), (s2), len, locale) == 0;	      \
+     if (result) (s2) += len;						      \
+     result; })
+# else
+#  define match_string(cs1, s2) \
   ({ size_t len = strlen (cs1);						      \
      int result = strncasecmp ((cs1), (s2), len) == 0;			      \
      if (result) (s2) += len;						      \
      result; })
+# endif
 #else
 /* Oh come on.  Get a reasonable compiler.  */
 # define match_string(cs1, s2) \
@@ -203,6 +211,7 @@ const unsigned short int __mon_yday[2][13] =
 # define LOCALE_PARAM_PROTO , __locale_t locale
 # define LOCALE_PARAM_DECL __locale_t locale;
 # define HELPER_LOCALE_ARG , current
+# define ISSPACE(Ch) __isspace_l (Ch, locale)
 #else
 # define LOCALE_PARAM
 # define LOCALE_ARG
@@ -213,6 +222,7 @@ const unsigned short int __mon_yday[2][13] =
 # else
 #  define HELPER_LOCALE_ARG
 # endif
+# define ISSPACE(Ch) isspace (Ch)
 #endif
 
 
@@ -306,9 +316,9 @@ strptime_internal (rp, fmt, tm, decided, era_cnt LOCALE_PARAM)
     {
       /* A white space in the format string matches 0 more or white
 	 space in the input string.  */
-      if (isspace (*fmt))
+      if (ISSPACE (*fmt))
 	{
-	  while (isspace (*rp))
+	  while (ISSPACE (*rp))
 	    ++rp;
 	  ++fmt;
 	  continue;
@@ -529,7 +539,7 @@ strptime_internal (rp, fmt, tm, decided, era_cnt LOCALE_PARAM)
 	case 'n':
 	case 't':
 	  /* Match any white space.  */
-	  while (isspace (*rp))
+	  while (ISSPACE (*rp))
 	    ++rp;
 	  break;
 	case 'p':
-- 
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