libpurple/protocols/msn/p2p.h

/**
 * @file p2p.h MSN P2P functions
 *
 * purple
 *
 * Purple is the legal property of its developers, whose names are too numerous
 * to list here.  Please refer to the COPYRIGHT file distributed with this
 * source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
 */

#ifndef MSN_P2P_H
#define MSN_P2P_H


#pragma pack(push,1)
typedef struct {
	guint32 session_id;
	guint32 id;
	/**
	 * In a MsnSlpMessage:
	 * For outgoing messages this is the number of bytes from buffer that
	 * have already been sent out.  For incoming messages this is the
	 * number of bytes that have been written to buffer.
	 */
	guint64 offset;
	guint64 total_size;
	guint32 length;
	guint32 flags;
	guint32 ack_id;
	guint32 ack_sub_id;
	guint64 ack_size;
/*	guint8  body[1]; */
} MsnP2PHeader;
#pragma pack(pop)

#pragma pack(push,1)
typedef struct {
	guint8  header_len;
	guint8  opcode;
	guint16 message_len;
	guint32 base_id;
} MsnP2Pv2Header;
#pragma pack(pop)

typedef struct
{
	guint32 value;
} MsnP2PFooter;

typedef enum
{
	P2P_NO_FLAG         = 0x0,        /**< No flags specified */
	P2P_OUT_OF_ORDER    = 0x1,        /**< Chunk out-of-order */
	P2P_ACK             = 0x2,        /**< Acknowledgement */
	P2P_PENDING_INVITE  = 0x4,        /**< There is a pending invite */
	P2P_BINARY_ERROR    = 0x8,        /**< Error on the binary level */
	P2P_FILE            = 0x10,       /**< File */
	P2P_MSN_OBJ_DATA    = 0x20,       /**< MsnObject data */
	P2P_CLOSE           = 0x40,       /**< Close session */
	P2P_TLP_ERROR       = 0x80,       /**< Error at transport layer protocol */
	P2P_DC_HANDSHAKE    = 0x100,      /**< Direct Handshake */
	P2P_WML2009_COMP    = 0x1000000,  /**< Compatibility with WLM 2009 */
	P2P_FILE_DATA       = 0x1000030   /**< File transfer data */
} MsnP2PHeaderFlag;
/* Info From:
 * http://msnpiki.msnfanatic.com/index.php/MSNC:P2Pv1_Headers#Flags
 * http://trac.kmess.org/changeset/ba04d0c825769d23370511031c47f6be75fe9b86
 * #7180
 */

typedef enum
{
	P2P_APPID_SESION    = 0x0,        /**< Negotiating session */
	P2P_APPID_OBJ       = 0x1,        /**< MsnObject (Display or Emoticon) */
	P2P_APPID_FILE      = 0x2,        /**< File transfer */
	P2P_APPID_EMOTE     = 0xB,        /**< CustomEmoticon */
	P2P_APPID_DISPLAY   = 0xC         /**< Display Image */
} MsnP2PAppId;

#define P2P_PACKET_HEADER_SIZE sizeof(MsnP2PHeader)
#define P2P_PACKET_FOOTER_SIZE sizeof(MsnP2PFooter)

MsnP2PHeader *
msn_p2p_header_from_wire(MsnP2PHeader *wire);

MsnP2PHeader *
msn_p2p_header_to_wire(MsnP2PHeader *header);

MsnP2PFooter *
msn_p2p_footer_from_wire(MsnP2PFooter *wire);

MsnP2PFooter *
msn_p2p_footer_to_wire(MsnP2PFooter *footer);

gboolean
msn_p2p_msg_is_data(const MsnP2PHeaderFlag flags);

#endif /* MSN_P2P_H */