From 0c13e147a55ede1da8ed34bea773b560860a8af5 Mon Sep 17 00:00:00 2001
From: Sebastian Dransfeld <sd@tango.flipp.net>
Date: Wed, 7 Feb 2007 00:23:54 +0000
Subject: [PATCH] Make dbus endian aware.

SVN revision: 28278
---
 legacy/ecore/src/lib/ecore_dbus/ecore_dbus.c  | 12 ++++++++++
 .../src/lib/ecore_dbus/ecore_dbus_message.c   |  6 +++--
 .../src/lib/ecore_dbus/ecore_dbus_private.h   | 24 +++++++++++++++++++
 .../src/lib/ecore_dbus/ecore_dbus_utils.c     |  2 ++
 4 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/legacy/ecore/src/lib/ecore_dbus/ecore_dbus.c b/legacy/ecore/src/lib/ecore_dbus/ecore_dbus.c
index 10c9db30a8..56ae147f17 100644
--- a/legacy/ecore/src/lib/ecore_dbus/ecore_dbus.c
+++ b/legacy/ecore/src/lib/ecore_dbus/ecore_dbus.c
@@ -13,6 +13,7 @@
 /********************************************************************************/
 /* Author: Jorge Luis Zapata							*/
 /* Author: Brian Mattern (rephorm)						*/
+/* Author: Sebastian Dransfeld							*/
 /* Version: 0.3.0								*/
 /********************************************************************************/
 /* Todo										*/
@@ -83,6 +84,8 @@ static int                  init_count = 0;
 static Ecore_List2         *servers = NULL;
 static Ecore_Event_Handler *handler[3];
 
+int words_bigendian = -1;
+
 /* public functions */
 EAPI int
 ecore_dbus_init(void)
@@ -91,6 +94,15 @@ ecore_dbus_init(void)
 
    if (++init_count != 1) return init_count;
 
+   if (words_bigendian == -1)
+     {
+	unsigned long int v;
+
+	v = htonl(0x12345678);
+	if (v == 0x12345678) words_bigendian = 1;
+	else words_bigendian = 0;
+     }
+
    ecore_con_init();
 
    ECORE_DBUS_EVENT_SERVER_ADD = ecore_event_type_new();
diff --git a/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_message.c b/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_message.c
index fe4f942960..50ff0484ae 100644
--- a/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_message.c
+++ b/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_message.c
@@ -462,8 +462,10 @@ _ecore_dbus_message_header(Ecore_DBus_Message *msg, int type, int flags,
    if (!msg) return;
 
    /* endianness (1) */
-   /* XXX we need to detect for endianess and send 'B' for Bigendian machines */
-   msg->buffer[0] = msg->byte_order = 'l';
+   if (words_bigendian)
+     msg->buffer[0] = msg->byte_order = 'B';
+   else
+     msg->buffer[0] = msg->byte_order = 'l';
    /* type (1) */
    msg->buffer[1] = msg->type = (char)type;
    /* flags (1) 0x1 = no reply expected, 0x2 auto activation */
diff --git a/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_private.h b/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_private.h
index df3988ad39..2fd280fff0 100644
--- a/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_private.h
+++ b/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_private.h
@@ -7,6 +7,30 @@
 #include "Ecore_Con.h"
 #include "Ecore_Data.h"
 
+extern int words_bigendian;
+
+#define SWAP64(x) (x) = \
+   ((((unsigned long long)(x) & 0x00000000000000ffULL ) << 56) |\
+       (((unsigned long long)(x) & 0x000000000000ff00ULL ) << 40) |\
+       (((unsigned long long)(x) & 0x0000000000ff0000ULL ) << 24) |\
+       (((unsigned long long)(x) & 0x00000000ff000000ULL ) << 8) |\
+       (((unsigned long long)(x) & 0x000000ff00000000ULL ) >> 8) |\
+       (((unsigned long long)(x) & 0x0000ff0000000000ULL ) >> 24) |\
+       (((unsigned long long)(x) & 0x00ff000000000000ULL ) >> 40) |\
+       (((unsigned long long)(x) & 0xff00000000000000ULL ) >> 56))
+#define SWAP32(x) (x) = \
+   ((((unsigned int)(x) & 0x000000ff ) << 24) |\
+       (((unsigned int)(x) & 0x0000ff00 ) << 8) |\
+       (((unsigned int)(x) & 0x00ff0000 ) >> 8) |\
+       (((unsigned int)(x) & 0xff000000 ) >> 24))
+#define SWAP16(x) (x) = \
+   ((((unsigned short)(x) & 0x00ff ) << 8) |\
+       (((unsigned short)(x) & 0xff00 ) >> 8))
+
+#define CONV16(order, x) { if (words_bigendian && (order) != 'B') SWAP16(x); }
+#define CONV32(order, x) { if (words_bigendian && (order) != 'B') SWAP32(x); }
+#define CONV64(order, x) { if (words_bigendian && (order) != 'B') SWAP64(x); }
+
 typedef unsigned char *(*Ecore_DBus_Auth_Transaction)(void *);
 
 typedef struct _Ecore_DBus_Auth                      Ecore_DBus_Auth;
diff --git a/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_utils.c b/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_utils.c
index 1b1c21d89e..e2f2faf47f 100644
--- a/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_utils.c
+++ b/legacy/ecore/src/lib/ecore_dbus/ecore_dbus_utils.c
@@ -83,6 +83,7 @@ _ecore_dbus_message_append_uint32(Ecore_DBus_Message *msg, unsigned int i)
 {
    unsigned char      *c;
 
+   CONV32(msg->byte_order, i)
    c = (unsigned char *)&i;
    _ecore_dbus_message_length_append(msg, 4);
    msg->buffer[msg->length++] = c[0];
@@ -109,6 +110,7 @@ _ecore_dbus_message_read_uint32(Ecore_DBus_Message *msg)
 
    _ecore_dbus_message_length_append(msg, 4);
    i = *(unsigned int *)(msg->buffer + msg->length);
+   CONV32(msg->byte_order, i)
    msg->length += 4;
    return i;
 }