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-rw-r--r--ares/configure.ac34
-rw-r--r--ares/inet_ntop.c2
-rw-r--r--ares/inet_ntop.h2
-rw-r--r--ares/m4/cares-functions.m4186
4 files changed, 188 insertions, 36 deletions
diff --git a/ares/configure.ac b/ares/configure.ac
index e579ea052..5c43e006a 100644
--- a/ares/configure.ac
+++ b/ares/configure.ac
@@ -660,6 +660,7 @@ CURL_CHECK_MSG_NOSIGNAL
CARES_CHECK_FUNC_GETHOSTNAME
CARES_CHECK_FUNC_GETSERVBYPORT_R
+CARES_CHECK_FUNC_INET_NTOP
CARES_CHECK_FUNC_STRCASECMP
CARES_CHECK_FUNC_STRCMPI
CARES_CHECK_FUNC_STRDUP
@@ -919,39 +920,6 @@ int main()
fi
-dnl Check for inet_ntop
-AC_CHECK_FUNCS(inet_ntop)
-dnl Again, some systems have it, but not IPv6
-if test "$ac_cv_func_inet_ntop" = "yes" ; then
-AC_MSG_CHECKING(if inet_ntop supports IPv6)
-AC_TRY_RUN(
- [
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#include <errno.h>
-int main()
- {
- struct in6_addr addr6;
- char buf[128];
- if (inet_ntop(AF_INET6, &addr6, buf, 128) == 0 && errno == EAFNOSUPPORT)
- exit(1);
- else
- exit(0);
- }
- ], [
- AC_MSG_RESULT(yes)
- AC_DEFINE_UNQUOTED(HAVE_INET_NTOP_IPV6,1,
- [Define to 1 if inet_ntop supports IPv6.])
- ], AC_MSG_RESULT(no),AC_MSG_RESULT(no))
-fi
-
AC_CHECK_SIZEOF(struct in6_addr, ,
[
#undef inline
diff --git a/ares/inet_ntop.c b/ares/inet_ntop.c
index 914576f5d..7f43b5c03 100644
--- a/ares/inet_ntop.c
+++ b/ares/inet_ntop.c
@@ -46,7 +46,7 @@
#include "inet_ntop.h"
-#if !defined(HAVE_INET_NTOP) || !defined(HAVE_INET_NTOP_IPV6)
+#ifndef HAVE_INET_NTOP
#ifdef SPRINTF_CHAR
# define SPRINTF(x) strlen(sprintf/**/x)
diff --git a/ares/inet_ntop.h b/ares/inet_ntop.h
index 9ddc9eb32..ab9735e80 100644
--- a/ares/inet_ntop.h
+++ b/ares/inet_ntop.h
@@ -18,7 +18,7 @@
* without express or implied warranty.
*/
-#if defined(HAVE_INET_NTOP) && defined(HAVE_INET_NTOP_IPV6)
+#ifdef HAVE_INET_NTOP
#define ares_inet_ntop(w,x,y,z) inet_ntop(w,x,y,z)
#else
const char *ares_inet_ntop(int af, const void *src, char *dst, size_t size);
diff --git a/ares/m4/cares-functions.m4 b/ares/m4/cares-functions.m4
index 8522cb7b4..bdec24b11 100644
--- a/ares/m4/cares-functions.m4
+++ b/ares/m4/cares-functions.m4
@@ -16,7 +16,34 @@
#***************************************************************************
# File version for 'aclocal' use. Keep it a single number.
-# serial 7
+# serial 8
+
+
+dnl CARES_INCLUDES_ARPA_INET
+dnl -------------------------------------------------
+dnl Set up variable with list of headers that must be
+dnl included when arpa/inet.h is to be included.
+
+AC_DEFUN([CARES_INCLUDES_ARPA_INET], [
+cares_includes_arpa_inet="\
+/* includes start */
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+# include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+# include <netinet/in.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+# include <arpa_inet.h>
+#endif
+/* includes end */"
+ AC_CHECK_HEADERS(
+ sys/types.h sys/socket.h netinet/in.h arpa/inet.h,
+ [], [], [$cares_includes_arpa_inet])
+])
dnl CARES_INCLUDES_NETDB
@@ -368,6 +395,163 @@ AC_DEFUN([CARES_CHECK_FUNC_GETSERVBYPORT_R], [
])
+dnl CARES_CHECK_FUNC_INET_NTOP
+dnl -------------------------------------------------
+dnl Verify if inet_ntop is available, prototyped, can
+dnl be compiled and seems to work. If all of these are
+dnl true, and usage has not been previously disallowed
+dnl with shell variable cares_disallow_inet_ntop, then
+dnl HAVE_INET_NTOP will be defined.
+
+AC_DEFUN([CARES_CHECK_FUNC_INET_NTOP], [
+ AC_REQUIRE([CARES_INCLUDES_ARPA_INET])dnl
+ AC_REQUIRE([CARES_INCLUDES_STRING])dnl
+ #
+ tst_links_inet_ntop="unknown"
+ tst_proto_inet_ntop="unknown"
+ tst_compi_inet_ntop="unknown"
+ tst_works_inet_ntop="unknown"
+ tst_allow_inet_ntop="unknown"
+ #
+ AC_MSG_CHECKING([if inet_ntop can be linked])
+ AC_LINK_IFELSE([
+ AC_LANG_FUNC_LINK_TRY([inet_ntop])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_links_inet_ntop="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_links_inet_ntop="no"
+ ])
+ #
+ if test "$tst_links_inet_ntop" = "yes"; then
+ AC_MSG_CHECKING([if inet_ntop is prototyped])
+ AC_EGREP_CPP([inet_ntop],[
+ $cares_includes_arpa_inet
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_proto_inet_ntop="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_proto_inet_ntop="no"
+ ])
+ fi
+ #
+ if test "$tst_proto_inet_ntop" = "yes"; then
+ AC_MSG_CHECKING([if inet_ntop is compilable])
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_arpa_inet
+ ]],[[
+ if(0 != inet_ntop(0, 0, 0, 0))
+ return 1;
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_compi_inet_ntop="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_compi_inet_ntop="no"
+ ])
+ fi
+ #
+ dnl only do runtime verification when not cross-compiling
+ if test "x$cross_compiling" != "xyes" &&
+ test "$tst_compi_inet_ntop" = "yes"; then
+ AC_MSG_CHECKING([if inet_ntop seems to work])
+ AC_RUN_IFELSE([
+ AC_LANG_PROGRAM([[
+ $cares_includes_arpa_inet
+ $cares_includes_string
+ ]],[[
+ char ipv6res[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")];
+ char ipv4res[sizeof "255.255.255.255"];
+ unsigned char ipv6a[26];
+ unsigned char ipv4a[5];
+ char *ipv6ptr = 0;
+ char *ipv4ptr = 0;
+ /* - */
+ ipv4res[0] = '\0';
+ ipv4a[0] = 0xc0;
+ ipv4a[1] = 0xa8;
+ ipv4a[2] = 0x64;
+ ipv4a[3] = 0x01;
+ ipv4a[4] = 0x01;
+ /* - */
+ ipv4ptr = inet_ntop(AF_INET, ipv4a, ipv4res, sizeof(ipv4res));
+ if(!ipv4ptr)
+ exit(1); /* fail */
+ if(ipv4ptr != ipv4res)
+ exit(1); /* fail */
+ if(!ipv4ptr[0])
+ exit(1); /* fail */
+ if(memcmp(ipv4res, "192.168.100.1", 13) != 0)
+ exit(1); /* fail */
+ /* - */
+ ipv6res[0] = '\0';
+ memset(ipv6a, 0, sizeof(ipv6a));
+ ipv6a[0] = 0xfe;
+ ipv6a[1] = 0x80;
+ ipv6a[8] = 0x02;
+ ipv6a[9] = 0x14;
+ ipv6a[10] = 0x4f;
+ ipv6a[11] = 0xff;
+ ipv6a[12] = 0xfe;
+ ipv6a[13] = 0x0b;
+ ipv6a[14] = 0x76;
+ ipv6a[15] = 0xc8;
+ ipv6a[25] = 0x01;
+ /* - */
+ ipv6ptr = inet_ntop(AF_INET6, ipv6a, ipv6res, sizeof(ipv6res));
+ if(!ipv6ptr)
+ exit(1); /* fail */
+ if(ipv6ptr != ipv6res)
+ exit(1); /* fail */
+ if(!ipv6ptr[0])
+ exit(1); /* fail */
+ if(memcmp(ipv6res, "fe80::214:4fff:fe0b:76c8", 24) != 0)
+ exit(1); /* fail */
+ /* - */
+ exit(0);
+ ]])
+ ],[
+ AC_MSG_RESULT([yes])
+ tst_works_inet_ntop="yes"
+ ],[
+ AC_MSG_RESULT([no])
+ tst_works_inet_ntop="no"
+ ])
+ fi
+ #
+ if test "$tst_compi_inet_ntop" = "yes" &&
+ test "$tst_works_inet_ntop" != "no"; then
+ AC_MSG_CHECKING([if inet_ntop usage allowed])
+ if test "x$cares_disallow_inet_ntop" != "xyes"; then
+ AC_MSG_RESULT([yes])
+ tst_allow_inet_ntop="yes"
+ else
+ AC_MSG_RESULT([no])
+ tst_allow_inet_ntop="no"
+ fi
+ fi
+ #
+ AC_MSG_CHECKING([if inet_ntop might be used])
+ if test "$tst_links_inet_ntop" = "yes" &&
+ test "$tst_proto_inet_ntop" = "yes" &&
+ test "$tst_compi_inet_ntop" = "yes" &&
+ test "$tst_allow_inet_ntop" = "yes" &&
+ test "$tst_works_inet_ntop" != "no"; then
+ AC_MSG_RESULT([yes])
+ AC_DEFINE_UNQUOTED(HAVE_INET_NTOP, 1,
+ [Define to 1 if you have a IPv6 capable working inet_ntop function.])
+ ac_cv_func_inet_ntop="yes"
+ else
+ AC_MSG_RESULT([no])
+ ac_cv_func_inet_ntop="no"
+ fi
+])
+
+
dnl CARES_CHECK_FUNC_STRCASECMP
dnl -------------------------------------------------
dnl Verify if strcasecmp is available, prototyped, and
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 03:36:08 +0000