Add a private copy of <linux/nfc.h>

The addition of the <linux/nfc.h> header in the kernel sources is
moderately recent, and therefore, a number of toolchains don't have
this header.

As a workaround until all reasonable toolchains get this header
included, add a configure check in neard to test whether this header
is available or not, and if not, use our own private copy of it.

Since symbols from the v3.7 kernel header are used, but linux/nfc.h
already exists since the v3.1 kernel, check for one of the most
recently added symbols: NFC_LLCP_RAW_HEADER_SIZE.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

Index: b/configure.ac
===================================================================
--- a/configure.ac
+++ b/configure.ac
@@ -88,6 +88,12 @@
 AC_SUBST(NETLINK_CFLAGS)
 AC_SUBST(NETLINK_LIBS)
 
+AC_TRY_COMPILE([
+#include <sys/socket.h>
+#include <linux/nfc.h>
+	], [int err[NFC_LLCP_RAW_HEADER_SIZE-2];],
+	[AC_DEFINE(HAVE_LINUX_NFC_H, 1, [Defines if linux/nfc.h header is available])], [])
+
 AC_ARG_ENABLE(test, AC_HELP_STRING([--enable-test],
 					[enable test/example scripts]),
 					[enable_test=${enableval}])
Index: b/src/near.h
===================================================================
--- a/src/near.h
+++ b/src/near.h
@@ -23,7 +23,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "linux-nfc.h"
+#endif
 
 #include <glib.h>
 
Index: b/src/linux-nfc.h
===================================================================
--- /dev/null
+++ b/src/linux-nfc.h
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2011 Instituto Nokia de Tecnologia
+ *
+ * Authors:
+ *    Lauro Ramos Venancio <lauro.venancio@openbossa.org>
+ *    Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __LINUX_NFC_H
+#define __LINUX_NFC_H
+
+#include <linux/types.h>
+#include <linux/socket.h>
+
+#define NFC_GENL_NAME "nfc"
+#define NFC_GENL_VERSION 1
+
+#define NFC_GENL_MCAST_EVENT_NAME "events"
+
+/**
+ * enum nfc_commands - supported nfc commands
+ *
+ * @NFC_CMD_UNSPEC: unspecified command
+ *
+ * @NFC_CMD_GET_DEVICE: request information about a device (requires
+ *	%NFC_ATTR_DEVICE_INDEX) or dump request to get a list of all nfc devices
+ * @NFC_CMD_DEV_UP: turn on the nfc device
+ *	(requires %NFC_ATTR_DEVICE_INDEX)
+ * @NFC_CMD_DEV_DOWN: turn off the nfc device
+ *	(requires %NFC_ATTR_DEVICE_INDEX)
+ * @NFC_CMD_START_POLL: start polling for targets using the given protocols
+ *	(requires %NFC_ATTR_DEVICE_INDEX and %NFC_ATTR_PROTOCOLS)
+ * @NFC_CMD_STOP_POLL: stop polling for targets (requires
+ *	%NFC_ATTR_DEVICE_INDEX)
+ * @NFC_CMD_GET_TARGET: dump all targets found by the previous poll (requires
+ *	%NFC_ATTR_DEVICE_INDEX)
+ * @NFC_EVENT_TARGETS_FOUND: event emitted when a new target is found
+ *	(it sends %NFC_ATTR_DEVICE_INDEX)
+ * @NFC_EVENT_DEVICE_ADDED: event emitted when a new device is registred
+ *	(it sends %NFC_ATTR_DEVICE_NAME, %NFC_ATTR_DEVICE_INDEX and
+ *	%NFC_ATTR_PROTOCOLS)
+ * @NFC_EVENT_DEVICE_REMOVED: event emitted when a device is removed
+ *	(it sends %NFC_ATTR_DEVICE_INDEX)
+ * @NFC_EVENT_TM_ACTIVATED: event emitted when the adapter is activated in
+ *      target mode.
+ * @NFC_EVENT_DEVICE_DEACTIVATED: event emitted when the adapter is deactivated
+ *      from target mode.
+ */
+enum nfc_commands {
+	NFC_CMD_UNSPEC,
+	NFC_CMD_GET_DEVICE,
+	NFC_CMD_DEV_UP,
+	NFC_CMD_DEV_DOWN,
+	NFC_CMD_DEP_LINK_UP,
+	NFC_CMD_DEP_LINK_DOWN,
+	NFC_CMD_START_POLL,
+	NFC_CMD_STOP_POLL,
+	NFC_CMD_GET_TARGET,
+	NFC_EVENT_TARGETS_FOUND,
+	NFC_EVENT_DEVICE_ADDED,
+	NFC_EVENT_DEVICE_REMOVED,
+	NFC_EVENT_TARGET_LOST,
+	NFC_EVENT_TM_ACTIVATED,
+	NFC_EVENT_TM_DEACTIVATED,
+/* private: internal use only */
+	__NFC_CMD_AFTER_LAST
+};
+#define NFC_CMD_MAX (__NFC_CMD_AFTER_LAST - 1)
+
+/**
+ * enum nfc_attrs - supported nfc attributes
+ *
+ * @NFC_ATTR_UNSPEC: unspecified attribute
+ *
+ * @NFC_ATTR_DEVICE_INDEX: index of nfc device
+ * @NFC_ATTR_DEVICE_NAME: device name, max 8 chars
+ * @NFC_ATTR_PROTOCOLS: nfc protocols - bitwise or-ed combination from
+ *	NFC_PROTO_*_MASK constants
+ * @NFC_ATTR_TARGET_INDEX: index of the nfc target
+ * @NFC_ATTR_TARGET_SENS_RES: NFC-A targets extra information such as NFCID
+ * @NFC_ATTR_TARGET_SEL_RES: NFC-A targets extra information (useful if the
+ *	target is not NFC-Forum compliant)
+ * @NFC_ATTR_TARGET_NFCID1: NFC-A targets identifier, max 10 bytes
+ * @NFC_ATTR_TARGET_SENSB_RES: NFC-B targets extra information, max 12 bytes
+ * @NFC_ATTR_TARGET_SENSF_RES: NFC-F targets extra information, max 18 bytes
+ * @NFC_ATTR_COMM_MODE: Passive or active mode
+ * @NFC_ATTR_RF_MODE: Initiator or target
+ * @NFC_ATTR_IM_PROTOCOLS: Initiator mode protocols to poll for
+ * @NFC_ATTR_TM_PROTOCOLS: Target mode protocols to listen for
+ */
+enum nfc_attrs {
+	NFC_ATTR_UNSPEC,
+	NFC_ATTR_DEVICE_INDEX,
+	NFC_ATTR_DEVICE_NAME,
+	NFC_ATTR_PROTOCOLS,
+	NFC_ATTR_TARGET_INDEX,
+	NFC_ATTR_TARGET_SENS_RES,
+	NFC_ATTR_TARGET_SEL_RES,
+	NFC_ATTR_TARGET_NFCID1,
+	NFC_ATTR_TARGET_SENSB_RES,
+	NFC_ATTR_TARGET_SENSF_RES,
+	NFC_ATTR_COMM_MODE,
+	NFC_ATTR_RF_MODE,
+	NFC_ATTR_DEVICE_POWERED,
+	NFC_ATTR_IM_PROTOCOLS,
+	NFC_ATTR_TM_PROTOCOLS,
+/* private: internal use only */
+	__NFC_ATTR_AFTER_LAST
+};
+#define NFC_ATTR_MAX (__NFC_ATTR_AFTER_LAST - 1)
+
+#define NFC_DEVICE_NAME_MAXSIZE 8
+#define NFC_NFCID1_MAXSIZE 10
+#define NFC_SENSB_RES_MAXSIZE 12
+#define NFC_SENSF_RES_MAXSIZE 18
+#define NFC_GB_MAXSIZE        48
+
+/* NFC protocols */
+#define NFC_PROTO_JEWEL		1
+#define NFC_PROTO_MIFARE	2
+#define NFC_PROTO_FELICA	3
+#define NFC_PROTO_ISO14443	4
+#define NFC_PROTO_NFC_DEP	5
+#define NFC_PROTO_ISO14443_B	6
+
+#define NFC_PROTO_MAX		7
+
+/* NFC communication modes */
+#define NFC_COMM_ACTIVE  0
+#define NFC_COMM_PASSIVE 1
+
+/* NFC RF modes */
+#define NFC_RF_INITIATOR 0
+#define NFC_RF_TARGET    1
+#define NFC_RF_NONE      2
+
+/* NFC protocols masks used in bitsets */
+#define NFC_PROTO_JEWEL_MASK      (1 << NFC_PROTO_JEWEL)
+#define NFC_PROTO_MIFARE_MASK     (1 << NFC_PROTO_MIFARE)
+#define NFC_PROTO_FELICA_MASK	  (1 << NFC_PROTO_FELICA)
+#define NFC_PROTO_ISO14443_MASK	  (1 << NFC_PROTO_ISO14443)
+#define NFC_PROTO_NFC_DEP_MASK	  (1 << NFC_PROTO_NFC_DEP)
+#define NFC_PROTO_ISO14443_B_MASK (1 << NFC_PROTO_ISO14443_B)
+
+struct sockaddr_nfc {
+	sa_family_t sa_family;
+	__u32 dev_idx;
+	__u32 target_idx;
+	__u32 nfc_protocol;
+};
+
+#define NFC_LLCP_MAX_SERVICE_NAME 63
+struct sockaddr_nfc_llcp {
+	sa_family_t sa_family;
+	__u32 dev_idx;
+	__u32 target_idx;
+	__u32 nfc_protocol;
+	__u8 dsap; /* Destination SAP, if known */
+	__u8 ssap; /* Source SAP to be bound to */
+	char service_name[NFC_LLCP_MAX_SERVICE_NAME]; /* Service name URI */;
+	size_t service_name_len;
+};
+
+/* NFC socket protocols */
+#define NFC_SOCKPROTO_RAW	0
+#define NFC_SOCKPROTO_LLCP	1
+#define NFC_SOCKPROTO_MAX	2
+
+#define NFC_HEADER_SIZE 1
+
+/**
+ * Pseudo-header info for raw socket packets
+ * First byte is the adapter index
+ * Second byte contains flags
+ *  - 0x01 - Direction (0=RX, 1=TX)
+ *  - 0x02-0x80 - Reserved
+ **/
+#define NFC_LLCP_RAW_HEADER_SIZE	2
+#define NFC_LLCP_DIRECTION_RX		0x00
+#define NFC_LLCP_DIRECTION_TX		0x01
+
+#endif /*__LINUX_NFC_H */
Index: b/plugins/mifare.c
===================================================================
--- a/plugins/mifare.c
+++ b/plugins/mifare.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/p2p.c
===================================================================
--- a/plugins/p2p.c
+++ b/plugins/p2p.c
@@ -30,7 +30,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/handover.c
===================================================================
--- a/plugins/handover.c
+++ b/plugins/handover.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/types.h>
 #include <near/log.h>
Index: b/plugins/nfctype1.c
===================================================================
--- a/plugins/nfctype1.c
+++ b/plugins/nfctype1.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/nfctype2.c
===================================================================
--- a/plugins/nfctype2.c
+++ b/plugins/nfctype2.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/nfctype3.c
===================================================================
--- a/plugins/nfctype3.c
+++ b/plugins/nfctype3.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/nfctype4.c
===================================================================
--- a/plugins/nfctype4.c
+++ b/plugins/nfctype4.c
@@ -30,7 +30,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/npp.c
===================================================================
--- a/plugins/npp.c
+++ b/plugins/npp.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/snep.c
===================================================================
--- a/plugins/snep.c
+++ b/plugins/snep.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/snep-core.c
===================================================================
--- a/plugins/snep-core.c
+++ b/plugins/snep-core.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>
Index: b/plugins/snep-validation.c
===================================================================
--- a/plugins/snep-validation.c
+++ b/plugins/snep-validation.c
@@ -29,7 +29,11 @@
 #include <sys/socket.h>
 
 #include <linux/socket.h>
+#ifdef HAVE_LINUX_NFC_H
 #include <linux/nfc.h>
+#else
+#include "../src/linux-nfc.h"
+#endif
 
 #include <near/plugin.h>
 #include <near/log.h>