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/*
* MXit Protocol libPurple Plugin
*
* -- handle chunked data (multimedia messages) --
*
* Pieter Loubser <libpurple@mxit.com>
*
* (C) Copyright 2009 MXit Lifestyle (Pty) Ltd.
* <http://www.mxitlifestyle.com>
*
* 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 _MXIT_CHUNK_H_
#define _MXIT_CHUNK_H_
#include "roster.h"
#define MXIT_CHUNK_FILEID_LEN 8 /* bytes */
#define MXIT_CHUNK_HEADER_SIZE 5 /* type (1 byte) + length (4 bytes) */
/* Multimedia chunk types */
#define CP_CHUNK_NONE 0x00 /* (0) no chunk */
#define CP_CHUNK_CUSTOM 0x01 /* (1) custom resource */
#define CP_CHUNK_SPLASH 0x02 /* (2) splash image */
#define CP_CHUNK_CLICK 0x03 /* (3) splash click through */
#define CP_CHUNK_OFFER 0x06 /* (6) offer file */
#define CP_CHUNK_REJECT 0x07 /* (7) reject file */
#define CP_CHUNK_GET 0x08 /* (8) get file */
#define CP_CHUNK_RECIEVED 0x09 /* (9) received file */
#define CP_CHUNK_DIRECT_SND 0x0A /* (10) send file direct */
#define CP_CHUNK_DIRECT_FWD 0x0B /* (11) forward file direct */
#define CP_CHUNK_SKIN 0x0C /* (12) MXit client skin */
#define CP_CHUNK_SET_AVATAR 0x0D /* (13) set avatar */
#define CP_CHUNK_GET_AVATAR 0x0E /* (14) get avatar */
#define CP_CHUNK_END 0x7E /* (126) end */
#define CP_CHUNK_EXT 0x7F /* (127) extended type */
/* Custom Resource operations */
#define CR_OP_UPDATE 0
#define CR_OP_REMOVE 1
/* File Received status */
#define RECV_STATUS_SUCCESS 0
#define RECV_STATUS_PARSE_FAIL 1
#define RECV_STATUS_CANNOT_OPEN 8
#define RECV_STATUS_BAD_CRC 9
#define RECV_STATUS_BAD_ID 10
/* File Reject status */
#define REJECT_BY_USER 1
#define REJECT_FILETYPE 2
#define REJECT_NO_RESOURCES 3
#define REJECT_BAD_RECIPIENT 4
/*
* Chunk header manipulation functions
*/
static inline guint chunk_type( gchar* chunkheader )
{
return *chunkheader;
}
static inline void set_chunk_type( gchar* chunkheader, guint type )
{
*chunkheader = type;
}
static inline guint32 chunk_length( gchar* chunkheader )
{
guint32 length = *( (const guint32*) &chunkheader[1] );
return htonl( length );
}
static inline void set_chunk_length( gchar* chunkheader, guint32 size )
{
size = htonl( size );
memcpy( &chunkheader[1], &size, sizeof( guint32 ) );
}
static inline gchar* chunk_data( gchar* chunkheader )
{
return &chunkheader[MXIT_CHUNK_HEADER_SIZE];
}
struct offerfile_chunk {
char fileid[MXIT_CHUNK_FILEID_LEN];
char username[MXIT_CP_MAX_JID_LEN + 1];
int filesize;
char filename[FILENAME_MAX];
};
struct getfile_chunk {
char fileid[MXIT_CHUNK_FILEID_LEN];
int offset;
int length;
int crc;
char* data;
};
struct cr_chunk {
char id[64];
char handle[64];
char operation;
GList* resources;
};
struct splash_chunk {
char anchor;
char showtime;
int bgcolor;
char* data;
int datalen;
};
struct splash_click_chunk {
char reserved[1];
};
struct getavatar_chunk {
char mxitid[50];
char avatarid[64];
char format[16];
char bitdepth;
int crc;
int width;
int height;
int length;
char* data;
};
/* Encode chunk */
int mxit_chunk_create_senddirect( char* chunkdata, const char* username, const char* filename, const unsigned char* data, int datalen );
int mxit_chunk_create_reject( char* chunkdata, const char* fileid );
int mxit_chunk_create_get( char* chunkdata, const char* fileid, int filesize, int offset );
int mxit_chunk_create_received( char* chunkdata, const char* fileid, unsigned char status );
int mxit_chunk_create_set_avatar( char* chunkdata, const unsigned char* data, int datalen );
int mxit_chunk_create_get_avatar( char* chunkdata, const char* mxitId, const char* avatarId, unsigned int imgsize );
/* Decode chunk */
void mxit_chunk_parse_offer( char* chunkdata, int datalen, struct offerfile_chunk* offer );
void mxit_chunk_parse_get( char* chunkdata, int datalen, struct getfile_chunk* getfile );
void mxit_chunk_parse_cr( char* chunkdata, int datalen, struct cr_chunk* cr );
void mxit_chunk_parse_get_avatar( char* chunkdata, int datalen, struct getavatar_chunk* avatar );
#endif /* _MXIT_CHUNK_H_ */
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