[libmicrohttpd] 03/03: Added check for signed socket type

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karlson2k pushed a commit to branch master
in repository libmicrohttpd.

commit b6737ab39b9df59acad1fe6fb7dc673ddf8e03db
Author: Evgeny Grin (Karlson2k) <k2k@narod.ru>
AuthorDate: Sun Nov 12 19:26:45 2023 +0300

    Added check for signed socket type
---
 configure.ac            | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/microhttpd/daemon.c |  4 ++--
 2 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index f2abfa43..e3cfba07 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2120,6 +2120,55 @@ AS_VAR_IF([mhd_cv_fd_setsize_overridable],["no"],
   [AC_DEFINE([HAS_FD_SETSIZE_OVERRIDABLE],[1],[Define to 1 i][f your system 
allow overriding the value of FD_SETSIZE macro])]
 )
 
+AC_CACHE_CHECK([whether socket value is a signed type],[mhd_cv_socket_signed],
+  [
+    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SOCKLIB_H
+#include <sockLib.h>
+#endif
+#if defined(_WIN32) && ! defined(__CYGWIN__)
+#include <winsock2.h>
+#endif
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+
+/* Keep in sync with microhttpd.h */
+#if ! defined(_WIN32) || defined(_SYS_TYPES_FD_SET)
+typedef int MHD_socket;
+#else /* defined(_WIN32) && ! defined(_SYS_TYPES_FD_SET) */
+typedef SOCKET MHD_socket;
+#endif /* defined(_WIN32) && ! defined(_SYS_TYPES_FD_SET) */
+
+int main(void)
+{
+  int test_arr[2 - 5*(!!(0 < ((MHD_socket)-1)))];
+  test_arr[1] = 0;
+  return test_arr[1];
+}
+          ]]
+        )
+      ],
+      [mhd_cv_socket_signed="yes"],
+      [mhd_cv_socket_signed="no"]
+    )
+  ]
+)
+AS_VAR_IF([mhd_cv_socket_signed],["yes"],
+  [AC_DEFINE([HAS_SIGNED_SOCKET],[1],[Define to 1 i][f your socket type is 
signed])]
+)
 
 MHD_CHECK_FUNC([writev],
   [[#include <sys/uio.h>]],
diff --git a/src/microhttpd/daemon.c b/src/microhttpd/daemon.c
index 32930a6f..b2420ca8 100644
--- a/src/microhttpd/daemon.c
+++ b/src/microhttpd/daemon.c
@@ -7409,7 +7409,7 @@ process_interim_params (struct MHD_Daemon *d,
     {
       (void) 0; /* Use MHD-created socket */
     }
-#ifdef MHD_POSIX_SOCKETS
+#ifdef HAS_SIGNED_SOCKET
     else if (0 > params->listen_fd)
     {
 #ifdef HAVE_MESSAGES
@@ -7419,7 +7419,7 @@ process_interim_params (struct MHD_Daemon *d,
 #endif /* HAVE_MESSAGES */
       return false;
     }
-#endif /* MHD_POSIX_SOCKETS */
+#endif /* HAS_SIGNED_SOCKET */
     else if (0 != (d->options & MHD_USE_NO_LISTEN_SOCKET))
     {
 #ifdef HAVE_MESSAGES

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