configure: detect getsockname and getpeername on windows too

Made detection macros for these two functions in the same style as other
functions possibly in winsock in the hope this will work better to
detect these functions when cross-compiling for Windows.

Follow-up to e91e4816123

Fixes #3913
Closes #3915

1 files changed, 195 insertions, 0 deletions

diff --git a/m4/curl-functions.m4 b/m4/curl-functions.m4
index 8249108bb..b79e18198 100644
--- a/m4/curl-functions.m4
+++ b/m4/curl-functions.m4
@@ -2912,6 +2912,201 @@ AC_DEFUN([CURL_CHECK_FUNC_GETHOSTNAME], [
   fi
 ])
 
+dnl CURL_CHECK_FUNC_GETPEERNAME
+dnl -------------------------------------------------
+dnl Verify if getpeername is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable curl_disallow_getpeername, then
+dnl HAVE_GETPEERNAME will be defined.
+
+AC_DEFUN([CURL_CHECK_FUNC_GETPEERNAME], [
+  AC_REQUIRE([CURL_INCLUDES_WINSOCK2])dnl
+  AC_REQUIRE([CURL_INCLUDES_UNISTD])dnl
+  AC_REQUIRE([CURL_PREPROCESS_CALLCONV])dnl
+  AC_REQUIRE([CURL_INCLUDES_BSDSOCKET])dnl
+  #
+  tst_links_getpeername="unknown"
+  tst_proto_getpeername="unknown"
+  tst_compi_getpeername="unknown"
+  tst_allow_getpeername="unknown"
+  #
+  AC_MSG_CHECKING([if getpeername can be linked])
+  AC_LINK_IFELSE([
+    AC_LANG_PROGRAM([[
+      $curl_includes_winsock2
+      $curl_includes_bsdsocket
+      $curl_includes_sys_socket
+    ]],[[
+      if(0 != getpeername(0, (void *)0, (void *)0))
+        return 1;
+    ]])
+  ],[
+    AC_MSG_RESULT([yes])
+    tst_links_getpeername="yes"
+  ],[
+    AC_MSG_RESULT([no])
+    tst_links_getpeername="no"
+  ])
+  #
+  if test "$tst_links_getpeername" = "yes"; then
+    AC_MSG_CHECKING([if getpeername is prototyped])
+    AC_EGREP_CPP([getpeername],[
+      $curl_includes_winsock2
+      $curl_includes_bsdsocket
+      $curl_includes_sys_socket
+    ],[
+      AC_MSG_RESULT([yes])
+      tst_proto_getpeername="yes"
+    ],[
+      AC_MSG_RESULT([no])
+      tst_proto_getpeername="no"
+    ])
+  fi
+  #
+  if test "$tst_proto_getpeername" = "yes"; then
+    AC_MSG_CHECKING([if getpeername is compilable])
+    AC_COMPILE_IFELSE([
+      AC_LANG_PROGRAM([[
+        $curl_includes_winsock2
+        $curl_includes_bsdsocket
+        $curl_includes_sys_socket
+      ]],[[
+        if(0 != getpeername(0, (void *)0, (void *)0))
+          return 1;
+      ]])
+    ],[
+      AC_MSG_RESULT([yes])
+      tst_compi_getpeername="yes"
+    ],[
+      AC_MSG_RESULT([no])
+      tst_compi_getpeername="no"
+    ])
+  fi
+  #
+  if test "$tst_compi_getpeername" = "yes"; then
+    AC_MSG_CHECKING([if getpeername usage allowed])
+    if test "x$curl_disallow_getpeername" != "xyes"; then
+      AC_MSG_RESULT([yes])
+      tst_allow_getpeername="yes"
+    else
+      AC_MSG_RESULT([no])
+      tst_allow_getpeername="no"
+    fi
+  fi
+  #
+  AC_MSG_CHECKING([if getpeername might be used])
+  if test "$tst_links_getpeername" = "yes" &&
+     test "$tst_proto_getpeername" = "yes" &&
+     test "$tst_compi_getpeername" = "yes" &&
+     test "$tst_allow_getpeername" = "yes"; then
+    AC_MSG_RESULT([yes])
+    AC_DEFINE_UNQUOTED(HAVE_GETPEERNAME, 1,
+      [Define to 1 if you have the getpeername function.])
+    curl_cv_func_getpeername="yes"
+  else
+    AC_MSG_RESULT([no])
+    curl_cv_func_getpeername="no"
+  fi
+])
+
+dnl CURL_CHECK_FUNC_GETSOCKNAME
+dnl -------------------------------------------------
+dnl Verify if getsockname is available, prototyped, and
+dnl can be compiled. If all of these are true, and
+dnl usage has not been previously disallowed with
+dnl shell variable curl_disallow_getsockname, then
+dnl HAVE_GETSOCKNAME will be defined.
+
+AC_DEFUN([CURL_CHECK_FUNC_GETSOCKNAME], [
+  AC_REQUIRE([CURL_INCLUDES_WINSOCK2])dnl
+  AC_REQUIRE([CURL_INCLUDES_UNISTD])dnl
+  AC_REQUIRE([CURL_PREPROCESS_CALLCONV])dnl
+  AC_REQUIRE([CURL_INCLUDES_BSDSOCKET])dnl
+  #
+  tst_links_getsockname="unknown"
+  tst_proto_getsockname="unknown"
+  tst_compi_getsockname="unknown"
+  tst_allow_getsockname="unknown"
+  #
+  AC_MSG_CHECKING([if getsockname can be linked])
+  AC_LINK_IFELSE([
+    AC_LANG_PROGRAM([[
+      $curl_includes_winsock2
+      $curl_includes_bsdsocket
+      $curl_includes_sys_socket
+    ]],[[
+      if(0 != getsockname(0, (void *)0, (void *)0))
+        return 1;
+    ]])
+  ],[
+    AC_MSG_RESULT([yes])
+    tst_links_getsockname="yes"
+  ],[
+    AC_MSG_RESULT([no])
+    tst_links_getsockname="no"
+  ])
+  #
+  if test "$tst_links_getsockname" = "yes"; then
+    AC_MSG_CHECKING([if getsockname is prototyped])
+    AC_EGREP_CPP([getsockname],[
+      $curl_includes_winsock2
+      $curl_includes_bsdsocket
+      $curl_includes_sys_socket
+    ],[
+      AC_MSG_RESULT([yes])
+      tst_proto_getsockname="yes"
+    ],[
+      AC_MSG_RESULT([no])
+      tst_proto_getsockname="no"
+    ])
+  fi
+  #
+  if test "$tst_proto_getsockname" = "yes"; then
+    AC_MSG_CHECKING([if getsockname is compilable])
+    AC_COMPILE_IFELSE([
+      AC_LANG_PROGRAM([[
+        $curl_includes_winsock2
+        $curl_includes_bsdsocket
+        $curl_includes_sys_socket
+      ]],[[
+        if(0 != getsockname(0, (void *)0, (void *)0))
+          return 1;
+      ]])
+    ],[
+      AC_MSG_RESULT([yes])
+      tst_compi_getsockname="yes"
+    ],[
+      AC_MSG_RESULT([no])
+      tst_compi_getsockname="no"
+    ])
+  fi
+  #
+  if test "$tst_compi_getsockname" = "yes"; then
+    AC_MSG_CHECKING([if getsockname usage allowed])
+    if test "x$curl_disallow_getsockname" != "xyes"; then
+      AC_MSG_RESULT([yes])
+      tst_allow_getsockname="yes"
+    else
+      AC_MSG_RESULT([no])
+      tst_allow_getsockname="no"
+    fi
+  fi
+  #
+  AC_MSG_CHECKING([if getsockname might be used])
+  if test "$tst_links_getsockname" = "yes" &&
+     test "$tst_proto_getsockname" = "yes" &&
+     test "$tst_compi_getsockname" = "yes" &&
+     test "$tst_allow_getsockname" = "yes"; then
+    AC_MSG_RESULT([yes])
+    AC_DEFINE_UNQUOTED(HAVE_GETSOCKNAME, 1,
+      [Define to 1 if you have the getsockname function.])
+    curl_cv_func_getsockname="yes"
+  else
+    AC_MSG_RESULT([no])
+    curl_cv_func_getsockname="no"
+  fi
+])
 
 dnl CURL_CHECK_FUNC_GETIFADDRS
 dnl -------------------------------------------------