chat.c

AnyQ服务端源代码(2004/10/28)源码

	aim_addtlvtochain16(&itl, 0x000a, 0x0001);
	aim_addtlvtochain_noval(&itl, 0x000f);
	aim_addtlvtochain_raw(&itl, 0x000c, strlen(msg), msg);
	aim_addtlvtochain_chatroom(&itl, 0x2711, exchange, roomname, instance);
	aim_writetlvchain(&hdrbs, &itl);
	
	aim_addtlvtochain_raw(&otl, 0x0005, aim_bstream_curpos(&hdrbs), hdr);

	aim_writetlvchain(&fr->data, &otl);

	free(hdr);
	aim_freetlvchain(&itl);
	aim_freetlvchain(&otl);
	
	aim_tx_enqueue(sess, fr);

	return 0;
}

/*
 * General room information.  Lots of stuff.
 *
 * Values I know are in here but I havent attached
 * them to any of the 'Unknown's:
 *	- Language (English)
 *
 * SNAC 000e/0002
 */
static int infoupdate(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
{
	aim_userinfo_t *userinfo = NULL;
	aim_rxcallback_t userfunc;
	int ret = 0;
	int usercount = 0;
	fu8_t detaillevel = 0;
	char *roomname = NULL;
	struct aim_chat_roominfo roominfo;
	fu16_t tlvcount = 0;
	aim_tlvlist_t *tlvlist;
	char *roomdesc = NULL;
	fu16_t flags = 0;
	fu32_t creationtime = 0;
	fu16_t maxmsglen = 0, maxvisiblemsglen = 0;
	fu16_t unknown_d2 = 0, unknown_d5 = 0;

	aim_chat_readroominfo(bs, &roominfo);

	detaillevel = aimbs_get8(bs);

	if (detaillevel != 0x02) {
		faimdprintf(sess, 0, "faim: chat_roomupdateinfo: detail level %d not supported\n", detaillevel);
		return 1;
	}

	tlvcount = aimbs_get16(bs);

	/*
	 * Everything else are TLVs.
	 */ 
	tlvlist = aim_readtlvchain(bs);

	/*
	 * TLV type 0x006a is the room name in Human Readable Form.
	 */
	if (aim_gettlv(tlvlist, 0x006a, 1))
		roomname = aim_gettlv_str(tlvlist, 0x006a, 1);

	/*
	 * Type 0x006f: Number of occupants.
	 */
	if (aim_gettlv(tlvlist, 0x006f, 1))
		usercount = aim_gettlv16(tlvlist, 0x006f, 1);

	/*
	 * Type 0x0073:  Occupant list.
	 */
	if (aim_gettlv(tlvlist, 0x0073, 1)) {	
		int curoccupant = 0;
		aim_tlv_t *tmptlv;
		aim_bstream_t occbs;

		tmptlv = aim_gettlv(tlvlist, 0x0073, 1);

		/* Allocate enough userinfo structs for all occupants */
		userinfo = calloc(usercount, sizeof(aim_userinfo_t));

		aim_bstream_init(&occbs, tmptlv->value, tmptlv->length);

		while (curoccupant < usercount)
			aim_extractuserinfo(sess, &occbs, &userinfo[curoccupant++]);
	}

	/* 
	 * Type 0x00c9: Flags. (AIM_CHATROOM_FLAG)
	 */
	if (aim_gettlv(tlvlist, 0x00c9, 1))
		flags = aim_gettlv16(tlvlist, 0x00c9, 1);

	/* 
	 * Type 0x00ca: Creation time (4 bytes)
	 */
	if (aim_gettlv(tlvlist, 0x00ca, 1))
		creationtime = aim_gettlv32(tlvlist, 0x00ca, 1);

	/* 
	 * Type 0x00d1: Maximum Message Length
	 */
	if (aim_gettlv(tlvlist, 0x00d1, 1))
		maxmsglen = aim_gettlv16(tlvlist, 0x00d1, 1);

	/* 
	 * Type 0x00d2: Unknown. (2 bytes)
	 */
	if (aim_gettlv(tlvlist, 0x00d2, 1))
		unknown_d2 = aim_gettlv16(tlvlist, 0x00d2, 1);

	/* 
	 * Type 0x00d3: Room Description
	 */
	if (aim_gettlv(tlvlist, 0x00d3, 1))
		roomdesc = aim_gettlv_str(tlvlist, 0x00d3, 1);

	/*
	 * Type 0x000d4: Unknown (flag only)
	 */
	if (aim_gettlv(tlvlist, 0x000d4, 1))
		;

	/* 
	 * Type 0x00d5: Unknown. (1 byte)
	 */
	if (aim_gettlv(tlvlist, 0x00d5, 1))
		unknown_d5 = aim_gettlv8(tlvlist, 0x00d5, 1);


	/*
	 * Type 0x00d6: Encoding 1 ("us-ascii")
	 */
	if (aim_gettlv(tlvlist, 0x000d6, 1))
		;
	
	/*
	 * Type 0x00d7: Language 1 ("en")
	 */
	if (aim_gettlv(tlvlist, 0x000d7, 1))
		;

	/*
	 * Type 0x00d8: Encoding 2 ("us-ascii")
	 */
	if (aim_gettlv(tlvlist, 0x000d8, 1))
		;
	
	/*
	 * Type 0x00d9: Language 2 ("en")
	 */
	if (aim_gettlv(tlvlist, 0x000d9, 1))
		;

	/*
	 * Type 0x00da: Maximum visible message length
	 */
	if (aim_gettlv(tlvlist, 0x000da, 1))
		maxvisiblemsglen = aim_gettlv16(tlvlist, 0x00da, 1);

	if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype))) {
		ret = userfunc(sess,
				rx, 
				&roominfo,
				roomname,
				usercount,
				userinfo,	
				roomdesc,
				flags,
				creationtime,
				maxmsglen,
				unknown_d2,
				unknown_d5,
				maxvisiblemsglen);
	}

	free(roominfo.name);
	free(userinfo);
	free(roomname);
	free(roomdesc);
	aim_freetlvchain(&tlvlist);

	return ret;
}

static int userlistchange(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
{
	aim_userinfo_t *userinfo = NULL;
	aim_rxcallback_t userfunc;
	int curcount = 0, ret = 0;

	while (aim_bstream_empty(bs)) {
		curcount++;
		userinfo = realloc(userinfo, curcount * sizeof(aim_userinfo_t));
		aim_extractuserinfo(sess, bs, &userinfo[curcount-1]);
	}

	if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
		ret = userfunc(sess, rx, curcount, userinfo);

	free(userinfo);

	return ret;
}

/*
 * We could probably include this in the normal ICBM parsing 
 * code as channel 0x0003, however, since only the start
 * would be the same, we might as well do it here.
 *
 * General outline of this SNAC:
 *   snac
 *   cookie
 *   channel id
 *   tlvlist
 *     unknown
 *     source user info
 *       name
 *       evility
 *       userinfo tlvs
 *         online time
 *         etc
 *     message metatlv
 *       message tlv
 *         message string
 *       possibly others
 *  
 */
static int incomingmsg(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
{
	aim_userinfo_t userinfo;
	aim_rxcallback_t userfunc;	
	int ret = 0;
	fu8_t *cookie;
	fu16_t channel;
	aim_tlvlist_t *otl;
	char *msg = NULL;
	aim_msgcookie_t *ck;

	memset(&userinfo, 0, sizeof(aim_userinfo_t));

	/*
	 * ICBM Cookie.  Uncache it.
	 */
	cookie = aimbs_getraw(bs, 8);

	if ((ck = aim_uncachecookie(sess, cookie, AIM_COOKIETYPE_CHAT))) {
		free(ck->data);
		free(ck);
	}

	/*
	 * Channel ID
	 *
	 * Channels 1 and 2 are implemented in the normal ICBM
	 * parser.
	 *
	 * We only do channel 3 here.
	 *
	 */
	channel = aimbs_get16(bs);

	if (channel != 0x0003) {
		faimdprintf(sess, 0, "faim: chat_incoming: unknown channel! (0x%04x)\n", channel);
		return 0;
	}

	/*
	 * Start parsing TLVs right away. 
	 */
	otl = aim_readtlvchain(bs);

	/*
	 * Type 0x0003: Source User Information
	 */
	if (aim_gettlv(otl, 0x0003, 1)) {
		aim_tlv_t *userinfotlv;
		aim_bstream_t tbs;

		userinfotlv = aim_gettlv(otl, 0x0003, 1);

		aim_bstream_init(&tbs, userinfotlv->value, userinfotlv->length);
		aim_extractuserinfo(sess, &tbs, &userinfo);
	}

	/*
	 * Type 0x0001: If present, it means it was a message to the 
	 * room (as opposed to a whisper).
	 */
	if (aim_gettlv(otl, 0x0001, 1))
		;

	/*
	 * Type 0x0005: Message Block.  Conains more TLVs.
	 */
	if (aim_gettlv(otl, 0x0005, 1)) {
		aim_tlvlist_t *itl;
		aim_tlv_t *msgblock;
		aim_bstream_t tbs;

		msgblock = aim_gettlv(otl, 0x0005, 1);
		aim_bstream_init(&tbs, msgblock->value, msgblock->length);
		itl = aim_readtlvchain(&tbs);

		/* 
		 * Type 0x0001: Message.
		 */	
		if (aim_gettlv(itl, 0x0001, 1))
			msg = aim_gettlv_str(itl, 0x0001, 1);

		aim_freetlvchain(&itl); 
	}

	if ((userfunc = aim_callhandler(sess, rx->conn, snac->family, snac->subtype)))
		ret = userfunc(sess, rx, &userinfo, msg);

	free(cookie);
	free(msg);
	aim_freetlvchain(&otl);

	return ret;
}

static int snachandler(aim_session_t *sess, aim_module_t *mod, aim_frame_t *rx, aim_modsnac_t *snac, aim_bstream_t *bs)
{

	if (snac->subtype == 0x0002)
		return infoupdate(sess, mod, rx, snac, bs);
	else if ((snac->subtype == 0x0003) || (snac->subtype == 0x0004))
		return userlistchange(sess, mod, rx, snac, bs);
	else if (snac->subtype == 0x0006)
		return incomingmsg(sess, mod, rx, snac, bs);

	return 0;
}

faim_internal int chat_modfirst(aim_session_t *sess, aim_module_t *mod)
{

	mod->family = 0x000e;
	mod->version = 0x0001;
	mod->toolid = 0x0004; /* XXX this doesn't look right */
	mod->toolversion = 0x0001; /* nor does this */
	mod->flags = 0;
	strncpy(mod->name, "chat", sizeof(mod->name));
	mod->snachandler = snachandler;

	return 0;
}