From b0afb8fe0ff1d87165af9df61501197a06240dda Mon Sep 17 00:00:00 2001
From: Lorenz Kästle <12514511+RincewindsHat@users.noreply.github.com>
Date: Sun, 28 Dec 2025 12:13:40 +0100
Subject: Sync with Gnulib stable-202507 code (a8ac9f9ce5)

---
 gl/getaddrinfo.c | 74 ++++++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 59 insertions(+), 15 deletions(-)

(limited to 'gl/getaddrinfo.c')

diff --git a/gl/getaddrinfo.c b/gl/getaddrinfo.c
index bf5d61f3..a8c45c21 100644
--- a/gl/getaddrinfo.c
+++ b/gl/getaddrinfo.c
@@ -1,5 +1,5 @@
 /* Get address information (partial implementation).
-   Copyright (C) 1997, 2001-2002, 2004-2024 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2001-2002, 2004-2025 Free Software Foundation, Inc.
    Contributed by Simon Josefsson <simon@josefsson.org>.
 
    This file is free software: you can redistribute it and/or modify
@@ -40,8 +40,8 @@
 #include <stdio.h>
 
 #include "gettext.h"
-#define _(String) gettext (String)
-#define N_(String) String
+#define _(msgid) dgettext ("gnulib", msgid)
+#define N_(msgid) msgid
 
 /* BeOS has AF_INET, but not PF_INET.  */
 #ifndef PF_INET
@@ -54,7 +54,7 @@
 
 #if HAVE_GETADDRINFO
 
-/* Override with cdecl calling convention.  */
+/* Override with cdecl calling convention and mingw fix.  */
 
 int
 getaddrinfo (const char *restrict nodename,
@@ -63,6 +63,10 @@ getaddrinfo (const char *restrict nodename,
              struct addrinfo **restrict res)
 # undef getaddrinfo
 {
+  if (hints && (hints->ai_flags & AI_NUMERICSERV) != 0
+      && servname && !(*servname >= '0' && *servname <= '9'))
+    return EAI_NONAME;
+
   return getaddrinfo (nodename, servname, hints, res);
 }
 
@@ -169,16 +173,43 @@ validate_family (int family)
 {
   /* FIXME: Support more families. */
 # if HAVE_IPV4
-     if (family == PF_INET)
-       return true;
+   if (family == PF_INET)
+     return true;
 # endif
 # if HAVE_IPV6
-     if (family == PF_INET6)
-       return true;
+   if (family == PF_INET6)
+     return true;
 # endif
-     if (family == PF_UNSPEC)
-       return true;
-     return false;
+   if (family == PF_UNSPEC)
+     return true;
+   return false;
+}
+
+static bool
+is_numeric_host (const char *host, int family)
+{
+# if HAVE_IPV4
+  if (family == PF_INET || family == PF_UNSPEC)
+    {
+      /* glibc supports IPv4 addresses in numbers-and-dots notation, that is,
+         also hexadecimal and octal number formats and formats that don't
+         require all four bytes to be explicitly written, via inet_aton().
+         But POSIX doesn't require support for these legacy formats.  Therefore
+         we are free to use inet_pton() instead of inet_aton().  */
+      struct in_addr addr;
+      if (inet_pton (AF_INET, host, &addr))
+        return true;
+    }
+# endif
+# if HAVE_IPV6
+  if (family == PF_INET6 || family == PF_UNSPEC)
+    {
+      struct in6_addr addr;
+      if (inet_pton (AF_INET6, host, &addr))
+        return true;
+    }
+# endif
+  return false;
 }
 
 /* Translate name of a service location and/or a service name to set of
@@ -210,10 +241,17 @@ getaddrinfo (const char *restrict nodename,
 
 # ifdef WINDOWS_NATIVE
   if (use_win32_p ())
-    return getaddrinfo_ptr (nodename, servname, hints, res);
+    {
+      if (hints && (hints->ai_flags & AI_NUMERICSERV) != 0
+          && servname && !(*servname >= '0' && *servname <= '9'))
+        return EAI_NONAME;
+      return getaddrinfo_ptr (nodename, servname, hints, res);
+    }
 # endif
 
-  if (hints && (hints->ai_flags & ~(AI_CANONNAME|AI_PASSIVE)))
+  if (hints
+      && (hints->ai_flags
+          & ~(AI_CANONNAME | AI_PASSIVE | AI_NUMERICHOST | AI_NUMERICSERV)))
     /* FIXME: Support more flags. */
     return EAI_BADFLAGS;
 
@@ -225,12 +263,18 @@ getaddrinfo (const char *restrict nodename,
     /* FIXME: Support other socktype. */
     return EAI_SOCKTYPE; /* FIXME: Better return code? */
 
-  if (!nodename)
+  if (nodename != NULL)
+    {
+      if (hints && (hints->ai_flags & AI_NUMERICHOST) != 0
+          && !is_numeric_host (nodename, hints->ai_family))
+        return EAI_NONAME;
+    }
+  else
     {
       if (!(hints->ai_flags & AI_PASSIVE))
         return EAI_NONAME;
 
-# ifdef HAVE_IPV6
+# if HAVE_IPV6
       nodename = (hints->ai_family == AF_INET6) ? "::" : "0.0.0.0";
 # else
       nodename = "0.0.0.0";
-- 
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