Initial step towards a configure time curl_socklen_t definition

acinclude.m4

@@ -3053,6 +3053,110 @@ AC_DEFUN([CURL_CONFIGURE_CURL_OFF_T], [
 ])
 
 
+dnl CURL_CONFIGURE_CURL_SOCKLEN_T
+dnl -------------------------------------------------
+dnl Find out suitable curl_socklen_t data type definition and size, making
+dnl appropriate definitions for template file include/curl/curlbuild.h.in
+dnl to properly configure and use the library.
+dnl
+dnl The need for the curl_socklen_t definition arises mainly to properly
+dnl interface HP-UX systems which on one hand have a typedef'ed socklen_t
+dnl data type which is 32 or 64-Bit wide depending on the data model being
+dnl used, and that on the other hand is only actually used when interfacing
+dnl the X/Open sockets provided in the xnet library.
+
+AC_DEFUN([CURL_CONFIGURE_CURL_SOCKLEN_T], [
+  AC_REQUIRE([CURL_INCLUDES_WS2TCPIP])dnl
+  AC_REQUIRE([CURL_INCLUDES_SYS_SOCKET])dnl
+  AC_REQUIRE([CURL_PREPROCESS_CALLCONV])dnl
+  #
+  AC_MSG_CHECKING([for curl_socklen_t data type])
+  curl_typeof_curl_socklen_t="unknown"
+  for arg1 in int SOCKET; do
+    for arg2 in 'struct sockaddr' void; do
+      for t in socklen_t int size_t 'unsigned int' long 'unsigned long'; do
+        if test "$curl_typeof_curl_socklen_t" = "unknown"; then
+          AC_COMPILE_IFELSE([
+            AC_LANG_PROGRAM([[
+              $curl_includes_ws2tcpip
+              $curl_includes_sys_socket
+              $curl_preprocess_callconv
+              extern int FUNCALLCONV getpeername($arg1, $arg2 *, $t *);
+            ]],[[
+              $t len = 0;
+              getpeername(0, 0, &len);
+            ]])
+          ],[
+            curl_typeof_curl_socklen_t="$t"
+          ])
+        fi
+      done
+    done
+  done
+  AC_MSG_RESULT([$curl_typeof_curl_socklen_t])
+  if test "$curl_typeof_curl_socklen_t" = "unknown"; then
+    AC_MSG_ERROR([cannot find data type for curl_socklen_t.])
+  fi
+  #
+  AC_MSG_CHECKING([size of curl_socklen_t])
+  curl_sizeof_curl_socklen_t="unknown"
+  curl_pull_headers_socklen_t="unknown"
+  for tst_pull_headers in 'none' 'ws2tcpip' 'systypes' 'syssocket'; do
+    if test "$curl_sizeof_curl_socklen_t" = "unknown"; then
+      case $tst_pull_headers in
+        none)
+          tmp_includes=""
+          ;;
+        ws2tcpip)
+          tmp_includes="$curl_includes_ws2tcpip"
+          ;;
+        systypes)
+          tmp_includes="$curl_includes_sys_types"
+          ;;
+        syssocket)
+          tmp_includes="$curl_includes_sys_socket"
+          ;;
+      esac
+      for tst_size in 8 4 2; do
+        if test "$curl_sizeof_curl_socklen_t" = "unknown"; then
+          AC_COMPILE_IFELSE([
+            AC_LANG_PROGRAM([[
+              $tmp_includes
+              typedef $curl_typeof_curl_socklen_t curl_socklen_t;
+              typedef char dummy_arr[sizeof(curl_socklen_t) == $tst_size ? 1 : -1];
+            ]],[[
+              curl_socklen_t dummy;
+            ]])
+          ],[
+            curl_sizeof_curl_socklen_t="$tst_size"
+            curl_pull_headers_socklen_t="$tst_pull_headers"
+          ])
+        fi
+      done
+    fi
+  done
+  AC_MSG_RESULT([$curl_sizeof_curl_socklen_t])
+  if test "$curl_sizeof_curl_socklen_t" = "unknown"; then
+    AC_MSG_ERROR([cannot find out size of curl_socklen_t.])
+  fi
+  #
+  case $curl_pull_headers_socklen_t in
+    ws2tcpip)
+      CURL_DEFINE_UNQUOTED([CURL_PULL_WS2TCPIP_H])
+      ;;
+    systypes)
+      CURL_DEFINE_UNQUOTED([CURL_PULL_SYS_TYPES_H])
+      ;;
+    syssocket)
+      CURL_DEFINE_UNQUOTED([CURL_PULL_SYS_TYPES_H])
+      CURL_DEFINE_UNQUOTED([CURL_PULL_SYS_SOCKET_H])
+      ;;
+  esac
+  CURL_DEFINE_UNQUOTED([CURL_TYPEOF_CURL_SOCKLEN_T], [$curl_typeof_curl_socklen_t])
+  CURL_DEFINE_UNQUOTED([CURL_SIZEOF_CURL_SOCKLEN_T], [$curl_sizeof_curl_socklen_t])
+])
+
+
 dnl CURL_CHECK_WIN32_LARGEFILE
 dnl -------------------------------------------------
 dnl Check if curl's WIN32 large file will be used

ares/m4/cares-functions.m4

@@ -1,7 +1,7 @@
 #***************************************************************************
 # $Id$
 #
-# Copyright (C) 2008 by Daniel Stenberg et al
+# Copyright (C) 2008 - 2009 by Daniel Stenberg et al
 #
 # Permission to use, copy, modify, and distribute this software and its
 # documentation for any purpose and without fee is hereby granted, provided
@@ -16,7 +16,7 @@
 #***************************************************************************
 
 # File version for 'aclocal' use. Keep it a single number.
-# serial 26
+# serial 28
 
 
 dnl CARES_INCLUDES_ARPA_INET
@@ -284,6 +284,23 @@ cares_includes_ws2tcpip="\
 ])
 
 
+dnl CARES_PREPROCESS_CALLCONV
+dnl -------------------------------------------------
+dnl Set up variable with a preprocessor block which
+dnl defines function calling convention.
+
+AC_DEFUN([CARES_PREPROCESS_CALLCONV], [
+cares_preprocess_callconv="\
+/* preprocess start */
+#ifdef HAVE_WINDOWS_H
+#  define FUNCALLCONV __stdcall
+#else
+#  define FUNCALLCONV
+#endif
+/* preprocess end */"
+])
+
+
 dnl CARES_CHECK_FUNC_FCNTL
 dnl -------------------------------------------------
 dnl Verify if fcntl is available, prototyped, and

configure.ac

@@ -2000,6 +2000,8 @@ AC_CHECK_TYPE([bool],[
 # Check for socklen_t or equivalent
 CURL_CHECK_TYPE_SOCKLEN_T
 
+CURL_CONFIGURE_CURL_SOCKLEN_T
+
 TYPE_IN_ADDR_T
 
 TYPE_SOCKADDR_STORAGE

include/curl/curlbuild.h.in

@@ -7,7 +7,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -63,6 +63,16 @@
    Error Compilation_aborted_CURL_SIZEOF_LONG_already_defined
 #endif
 
+#ifdef CURL_TYPEOF_CURL_SOCKLEN_T
+#  error "CURL_TYPEOF_CURL_SOCKLEN_T shall not be defined except in curlbuild.h"
+   Error Compilation_aborted_CURL_TYPEOF_CURL_SOCKLEN_T_already_defined
+#endif
+
+#ifdef CURL_SIZEOF_CURL_SOCKLEN_T
+#  error "CURL_SIZEOF_CURL_SOCKLEN_T shall not be defined except in curlbuild.h"
+   Error Compilation_aborted_CURL_SIZEOF_CURL_SOCKLEN_T_already_defined
+#endif
+
 #ifdef CURL_TYPEOF_CURL_OFF_T
 #  error "CURL_TYPEOF_CURL_OFF_T shall not be defined except in curlbuild.h"
    Error Compilation_aborted_CURL_TYPEOF_CURL_OFF_T_already_defined
@@ -123,9 +133,22 @@
 #  include <inttypes.h>
 #endif
 
+/* Configure process defines this to 1 when it finds out that system    */
+/* header file sys/socket.h must be included by the external interface. */
+#undef CURL_PULL_SYS_SOCKET_H
+#ifdef CURL_PULL_SYS_SOCKET_H
+#  include <sys/socket.h>
+#endif
+
 /* The size of `long', as computed by sizeof. */
 #undef CURL_SIZEOF_LONG
 
+/* Integral data type used for curl_socklen_t. */
+#undef CURL_TYPEOF_CURL_SOCKLEN_T
+
+/* The size of `curl_socklen_t', as computed by sizeof. */
+#undef CURL_SIZEOF_CURL_SOCKLEN_T
+
 /* Signed integral data type used for curl_off_t. */
 #undef CURL_TYPEOF_CURL_OFF_T
 

m4/curl-functions.m4

@@ -5,7 +5,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
@@ -22,7 +22,7 @@
 #***************************************************************************
 
 # File version for 'aclocal' use. Keep it a single number.
-# serial 45
+# serial 46
 
 
 dnl CURL_INCLUDES_ARPA_INET
@@ -307,6 +307,24 @@ curl_includes_sys_socket="\
 ])
 
 
+dnl CURL_INCLUDES_SYS_TYPES
+dnl -------------------------------------------------
+dnl Set up variable with list of headers that must be
+dnl included when sys/types.h is to be included.
+
+AC_DEFUN([CURL_INCLUDES_SYS_TYPES], [
+curl_includes_sys_types="\
+/* includes start */
+#ifdef HAVE_SYS_TYPES_H
+#  include <sys/types.h>
+#endif
+/* includes end */"
+  AC_CHECK_HEADERS(
+    sys/types.h,
+    [], [], [$curl_includes_sys_types])
+])
+
+
 dnl CURL_INCLUDES_SYS_UIO
 dnl -------------------------------------------------
 dnl Set up variable with list of headers that must be
@@ -433,6 +451,23 @@ curl_includes_ws2tcpip="\
 ])
 
 
+dnl CURL_PREPROCESS_CALLCONV
+dnl -------------------------------------------------
+dnl Set up variable with a preprocessor block which
+dnl defines function calling convention.
+
+AC_DEFUN([CURL_PREPROCESS_CALLCONV], [
+curl_preprocess_callconv="\
+/* preprocess start */
+#ifdef HAVE_WINDOWS_H
+#  define FUNCALLCONV __stdcall
+#else
+#  define FUNCALLCONV
+#endif
+/* preprocess end */"
+])
+
+
 dnl CURL_CHECK_FUNC_ALARM
 dnl -------------------------------------------------
 dnl Verify if alarm is available, prototyped, and