root / hw / bt / sdp.c @ 49ab747f
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/*
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* Service Discover Protocol server for QEMU L2CAP devices
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*
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* Copyright (C) 2008 Andrzej Zaborowski <balrog@zabor.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu-common.h" |
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#include "hw/bt.h" |
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|
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struct bt_l2cap_sdp_state_s {
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struct bt_l2cap_conn_params_s *channel;
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|
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struct sdp_service_record_s {
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int match;
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|
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int *uuid;
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int uuids;
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struct sdp_service_attribute_s {
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int match;
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|
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int attribute_id;
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int len;
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void *pair;
|
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} *attribute_list; |
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int attributes;
|
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} *service_list; |
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int services;
|
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}; |
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|
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static ssize_t sdp_datalen(const uint8_t **element, ssize_t *left) |
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{
|
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size_t len = *(*element) ++ & SDP_DSIZE_MASK; |
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|
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if (!*left)
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return -1; |
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(*left) --; |
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|
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if (len < SDP_DSIZE_NEXT1)
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return 1 << len; |
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else if (len == SDP_DSIZE_NEXT1) { |
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if (*left < 1) |
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return -1; |
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(*left) --; |
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|
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return *(*element) ++;
|
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} else if (len == SDP_DSIZE_NEXT2) { |
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if (*left < 2) |
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return -1; |
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(*left) -= 2;
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|
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len = (*(*element) ++) << 8;
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return len | (*(*element) ++);
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} else {
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if (*left < 4) |
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return -1; |
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(*left) -= 4;
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|
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len = (*(*element) ++) << 24;
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len |= (*(*element) ++) << 16;
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len |= (*(*element) ++) << 8;
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return len | (*(*element) ++);
|
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} |
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} |
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|
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static const uint8_t bt_base_uuid[12] = { |
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0x00, 0x00, 0x10, 0x00, 0x80, 0x00, 0x00, 0x80, 0x5f, 0x9b, 0x34, 0xfb, |
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}; |
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|
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static int sdp_uuid_match(struct sdp_service_record_s *record, |
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const uint8_t *uuid, ssize_t datalen)
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{
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int *lo, hi, val;
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|
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if (datalen == 16 || datalen == 4) { |
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if (datalen == 16 && memcmp(uuid + 4, bt_base_uuid, 12)) |
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return 0; |
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|
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if (uuid[0] | uuid[1]) |
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return 0; |
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uuid += 2;
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} |
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|
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val = (uuid[0] << 8) | uuid[1]; |
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lo = record->uuid; |
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hi = record->uuids; |
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while (hi >>= 1) |
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if (lo[hi] <= val)
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lo += hi; |
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|
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return *lo == val;
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} |
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|
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#define CONTINUATION_PARAM_SIZE (1 + sizeof(int)) |
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#define MAX_PDU_OUT_SIZE 96 /* Arbitrary */ |
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#define PDU_HEADER_SIZE 5 |
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#define MAX_RSP_PARAM_SIZE (MAX_PDU_OUT_SIZE - PDU_HEADER_SIZE - \
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CONTINUATION_PARAM_SIZE) |
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|
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static int sdp_svc_match(struct bt_l2cap_sdp_state_s *sdp, |
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const uint8_t **req, ssize_t *len)
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{
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size_t datalen; |
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int i;
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|
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if ((**req & ~SDP_DSIZE_MASK) != SDP_DTYPE_UUID)
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return 1; |
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|
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datalen = sdp_datalen(req, len); |
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if (datalen != 2 && datalen != 4 && datalen != 16) |
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return 1; |
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|
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for (i = 0; i < sdp->services; i ++) |
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if (sdp_uuid_match(&sdp->service_list[i], *req, datalen))
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sdp->service_list[i].match = 1;
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|
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(*req) += datalen; |
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(*len) -= datalen; |
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return 0; |
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} |
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|
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static ssize_t sdp_svc_search(struct bt_l2cap_sdp_state_s *sdp, |
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uint8_t *rsp, const uint8_t *req, ssize_t len)
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{
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ssize_t seqlen; |
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int i, count, start, end, max;
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int32_t handle; |
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|
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/* Perform the search */
|
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for (i = 0; i < sdp->services; i ++) |
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sdp->service_list[i].match = 0;
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|
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if (len < 1) |
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return -SDP_INVALID_SYNTAX;
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if ((*req & ~SDP_DSIZE_MASK) == SDP_DTYPE_SEQ) {
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seqlen = sdp_datalen(&req, &len); |
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if (seqlen < 3 || len < seqlen) |
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return -SDP_INVALID_SYNTAX;
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len -= seqlen; |
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|
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while (seqlen)
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if (sdp_svc_match(sdp, &req, &seqlen))
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return -SDP_INVALID_SYNTAX;
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} else if (sdp_svc_match(sdp, &req, &seqlen)) |
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return -SDP_INVALID_SYNTAX;
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|
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if (len < 3) |
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return -SDP_INVALID_SYNTAX;
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max = (req[0] << 8) | req[1]; |
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req += 2;
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len -= 2;
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|
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if (*req) {
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if (len <= sizeof(int)) |
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return -SDP_INVALID_SYNTAX;
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len -= sizeof(int); |
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memcpy(&start, req + 1, sizeof(int)); |
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} else
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start = 0;
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|
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if (len > 1) |
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return -SDP_INVALID_SYNTAX;
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|
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/* Output the results */
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len = 4;
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count = 0;
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end = start; |
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for (i = 0; i < sdp->services; i ++) |
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if (sdp->service_list[i].match) {
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if (count >= start && count < max && len + 4 < MAX_RSP_PARAM_SIZE) { |
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handle = i; |
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memcpy(rsp + len, &handle, 4);
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len += 4;
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end = count + 1;
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} |
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|
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count ++; |
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} |
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|
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rsp[0] = count >> 8; |
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rsp[1] = count & 0xff; |
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rsp[2] = (end - start) >> 8; |
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rsp[3] = (end - start) & 0xff; |
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|
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if (end < count) {
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rsp[len ++] = sizeof(int); |
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memcpy(rsp + len, &end, sizeof(int)); |
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len += 4;
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} else
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rsp[len ++] = 0;
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return len;
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} |
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|
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static int sdp_attr_match(struct sdp_service_record_s *record, |
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const uint8_t **req, ssize_t *len)
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{
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int i, start, end;
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|
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if (**req == (SDP_DTYPE_UINT | SDP_DSIZE_2)) {
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(*req) ++; |
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if (*len < 3) |
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return 1; |
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|
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start = (*(*req) ++) << 8;
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start |= *(*req) ++; |
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end = start; |
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*len -= 3;
|
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} else if (**req == (SDP_DTYPE_UINT | SDP_DSIZE_4)) { |
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(*req) ++; |
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if (*len < 5) |
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return 1; |
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|
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start = (*(*req) ++) << 8;
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start |= *(*req) ++; |
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end = (*(*req) ++) << 8;
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end |= *(*req) ++; |
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*len -= 5;
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} else
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return 1; |
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|
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for (i = 0; i < record->attributes; i ++) |
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if (record->attribute_list[i].attribute_id >= start &&
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record->attribute_list[i].attribute_id <= end) |
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record->attribute_list[i].match = 1;
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|
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return 0; |
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} |
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|
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static ssize_t sdp_attr_get(struct bt_l2cap_sdp_state_s *sdp, |
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uint8_t *rsp, const uint8_t *req, ssize_t len)
|
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{
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ssize_t seqlen; |
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int i, start, end, max;
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int32_t handle; |
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struct sdp_service_record_s *record;
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uint8_t *lst; |
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|
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/* Perform the search */
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if (len < 7) |
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return -SDP_INVALID_SYNTAX;
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memcpy(&handle, req, 4);
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req += 4;
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len -= 4;
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|
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if (handle < 0 || handle > sdp->services) |
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return -SDP_INVALID_RECORD_HANDLE;
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record = &sdp->service_list[handle]; |
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|
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for (i = 0; i < record->attributes; i ++) |
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record->attribute_list[i].match = 0;
|
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|
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max = (req[0] << 8) | req[1]; |
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req += 2;
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len -= 2;
|
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if (max < 0x0007) |
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return -SDP_INVALID_SYNTAX;
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|
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if ((*req & ~SDP_DSIZE_MASK) == SDP_DTYPE_SEQ) {
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seqlen = sdp_datalen(&req, &len); |
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if (seqlen < 3 || len < seqlen) |
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return -SDP_INVALID_SYNTAX;
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len -= seqlen; |
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|
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while (seqlen)
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if (sdp_attr_match(record, &req, &seqlen))
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return -SDP_INVALID_SYNTAX;
|
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} else if (sdp_attr_match(record, &req, &seqlen)) |
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return -SDP_INVALID_SYNTAX;
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|
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if (len < 1) |
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return -SDP_INVALID_SYNTAX;
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|
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if (*req) {
|
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if (len <= sizeof(int)) |
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return -SDP_INVALID_SYNTAX;
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len -= sizeof(int); |
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memcpy(&start, req + 1, sizeof(int)); |
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} else
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start = 0;
|
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|
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if (len > 1) |
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return -SDP_INVALID_SYNTAX;
|
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|
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/* Output the results */
|
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lst = rsp + 2;
|
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max = MIN(max, MAX_RSP_PARAM_SIZE); |
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len = 3 - start;
|
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end = 0;
|
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for (i = 0; i < record->attributes; i ++) |
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if (record->attribute_list[i].match) {
|
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if (len >= 0 && len + record->attribute_list[i].len < max) { |
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memcpy(lst + len, record->attribute_list[i].pair, |
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record->attribute_list[i].len); |
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end = len + record->attribute_list[i].len; |
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} |
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len += record->attribute_list[i].len; |
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} |
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if (0 >= start) { |
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lst[0] = SDP_DTYPE_SEQ | SDP_DSIZE_NEXT2;
|
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lst[1] = (len + start - 3) >> 8; |
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lst[2] = (len + start - 3) & 0xff; |
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} |
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|
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rsp[0] = end >> 8; |
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rsp[1] = end & 0xff; |
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|
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if (end < len) {
|
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len = end + start; |
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lst[end ++] = sizeof(int); |
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memcpy(lst + end, &len, sizeof(int)); |
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end += sizeof(int); |
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} else
|
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lst[end ++] = 0;
|
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|
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return end + 2; |
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} |
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|
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static int sdp_svc_attr_match(struct bt_l2cap_sdp_state_s *sdp, |
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const uint8_t **req, ssize_t *len)
|
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{
|
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int i, j, start, end;
|
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struct sdp_service_record_s *record;
|
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|
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if (**req == (SDP_DTYPE_UINT | SDP_DSIZE_2)) {
|
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(*req) ++; |
| 340 |
if (*len < 3) |
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return 1; |
| 342 |
|
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start = (*(*req) ++) << 8;
|
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start |= *(*req) ++; |
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end = start; |
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*len -= 3;
|
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} else if (**req == (SDP_DTYPE_UINT | SDP_DSIZE_4)) { |
| 348 |
(*req) ++; |
| 349 |
if (*len < 5) |
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return 1; |
| 351 |
|
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start = (*(*req) ++) << 8;
|
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start |= *(*req) ++; |
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end = (*(*req) ++) << 8;
|
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end |= *(*req) ++; |
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*len -= 5;
|
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} else
|
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return 1; |
| 359 |
|
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for (i = 0; i < sdp->services; i ++) |
| 361 |
if ((record = &sdp->service_list[i])->match)
|
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for (j = 0; j < record->attributes; j ++) |
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if (record->attribute_list[j].attribute_id >= start &&
|
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record->attribute_list[j].attribute_id <= end) |
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record->attribute_list[j].match = 1;
|
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|
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return 0; |
| 368 |
} |
| 369 |
|
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static ssize_t sdp_svc_search_attr_get(struct bt_l2cap_sdp_state_s *sdp, |
| 371 |
uint8_t *rsp, const uint8_t *req, ssize_t len)
|
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{
|
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ssize_t seqlen; |
| 374 |
int i, j, start, end, max;
|
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struct sdp_service_record_s *record;
|
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uint8_t *lst; |
| 377 |
|
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/* Perform the search */
|
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for (i = 0; i < sdp->services; i ++) { |
| 380 |
sdp->service_list[i].match = 0;
|
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for (j = 0; j < sdp->service_list[i].attributes; j ++) |
| 382 |
sdp->service_list[i].attribute_list[j].match = 0;
|
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} |
| 384 |
|
| 385 |
if (len < 1) |
| 386 |
return -SDP_INVALID_SYNTAX;
|
| 387 |
if ((*req & ~SDP_DSIZE_MASK) == SDP_DTYPE_SEQ) {
|
| 388 |
seqlen = sdp_datalen(&req, &len); |
| 389 |
if (seqlen < 3 || len < seqlen) |
| 390 |
return -SDP_INVALID_SYNTAX;
|
| 391 |
len -= seqlen; |
| 392 |
|
| 393 |
while (seqlen)
|
| 394 |
if (sdp_svc_match(sdp, &req, &seqlen))
|
| 395 |
return -SDP_INVALID_SYNTAX;
|
| 396 |
} else if (sdp_svc_match(sdp, &req, &seqlen)) |
| 397 |
return -SDP_INVALID_SYNTAX;
|
| 398 |
|
| 399 |
if (len < 3) |
| 400 |
return -SDP_INVALID_SYNTAX;
|
| 401 |
max = (req[0] << 8) | req[1]; |
| 402 |
req += 2;
|
| 403 |
len -= 2;
|
| 404 |
if (max < 0x0007) |
| 405 |
return -SDP_INVALID_SYNTAX;
|
| 406 |
|
| 407 |
if ((*req & ~SDP_DSIZE_MASK) == SDP_DTYPE_SEQ) {
|
| 408 |
seqlen = sdp_datalen(&req, &len); |
| 409 |
if (seqlen < 3 || len < seqlen) |
| 410 |
return -SDP_INVALID_SYNTAX;
|
| 411 |
len -= seqlen; |
| 412 |
|
| 413 |
while (seqlen)
|
| 414 |
if (sdp_svc_attr_match(sdp, &req, &seqlen))
|
| 415 |
return -SDP_INVALID_SYNTAX;
|
| 416 |
} else if (sdp_svc_attr_match(sdp, &req, &seqlen)) |
| 417 |
return -SDP_INVALID_SYNTAX;
|
| 418 |
|
| 419 |
if (len < 1) |
| 420 |
return -SDP_INVALID_SYNTAX;
|
| 421 |
|
| 422 |
if (*req) {
|
| 423 |
if (len <= sizeof(int)) |
| 424 |
return -SDP_INVALID_SYNTAX;
|
| 425 |
len -= sizeof(int); |
| 426 |
memcpy(&start, req + 1, sizeof(int)); |
| 427 |
} else
|
| 428 |
start = 0;
|
| 429 |
|
| 430 |
if (len > 1) |
| 431 |
return -SDP_INVALID_SYNTAX;
|
| 432 |
|
| 433 |
/* Output the results */
|
| 434 |
/* This assumes empty attribute lists are never to be returned even
|
| 435 |
* for matching Service Records. In practice this shouldn't happen
|
| 436 |
* as the requestor will usually include the always present
|
| 437 |
* ServiceRecordHandle AttributeID in AttributeIDList. */
|
| 438 |
lst = rsp + 2;
|
| 439 |
max = MIN(max, MAX_RSP_PARAM_SIZE); |
| 440 |
len = 3 - start;
|
| 441 |
end = 0;
|
| 442 |
for (i = 0; i < sdp->services; i ++) |
| 443 |
if ((record = &sdp->service_list[i])->match) {
|
| 444 |
len += 3;
|
| 445 |
seqlen = len; |
| 446 |
for (j = 0; j < record->attributes; j ++) |
| 447 |
if (record->attribute_list[j].match) {
|
| 448 |
if (len >= 0) |
| 449 |
if (len + record->attribute_list[j].len < max) {
|
| 450 |
memcpy(lst + len, record->attribute_list[j].pair, |
| 451 |
record->attribute_list[j].len); |
| 452 |
end = len + record->attribute_list[j].len; |
| 453 |
} |
| 454 |
len += record->attribute_list[j].len; |
| 455 |
} |
| 456 |
if (seqlen == len)
|
| 457 |
len -= 3;
|
| 458 |
else if (seqlen >= 3 && seqlen < max) { |
| 459 |
lst[seqlen - 3] = SDP_DTYPE_SEQ | SDP_DSIZE_NEXT2;
|
| 460 |
lst[seqlen - 2] = (len - seqlen) >> 8; |
| 461 |
lst[seqlen - 1] = (len - seqlen) & 0xff; |
| 462 |
} |
| 463 |
} |
| 464 |
if (len == 3 - start) |
| 465 |
len -= 3;
|
| 466 |
else if (0 >= start) { |
| 467 |
lst[0] = SDP_DTYPE_SEQ | SDP_DSIZE_NEXT2;
|
| 468 |
lst[1] = (len + start - 3) >> 8; |
| 469 |
lst[2] = (len + start - 3) & 0xff; |
| 470 |
} |
| 471 |
|
| 472 |
rsp[0] = end >> 8; |
| 473 |
rsp[1] = end & 0xff; |
| 474 |
|
| 475 |
if (end < len) {
|
| 476 |
len = end + start; |
| 477 |
lst[end ++] = sizeof(int); |
| 478 |
memcpy(lst + end, &len, sizeof(int)); |
| 479 |
end += sizeof(int); |
| 480 |
} else
|
| 481 |
lst[end ++] = 0;
|
| 482 |
|
| 483 |
return end + 2; |
| 484 |
} |
| 485 |
|
| 486 |
static void bt_l2cap_sdp_sdu_in(void *opaque, const uint8_t *data, int len) |
| 487 |
{
|
| 488 |
struct bt_l2cap_sdp_state_s *sdp = opaque;
|
| 489 |
enum bt_sdp_cmd pdu_id;
|
| 490 |
uint8_t rsp[MAX_PDU_OUT_SIZE - PDU_HEADER_SIZE], *sdu_out; |
| 491 |
int transaction_id, plen;
|
| 492 |
int err = 0; |
| 493 |
int rsp_len = 0; |
| 494 |
|
| 495 |
if (len < 5) { |
| 496 |
fprintf(stderr, "%s: short SDP PDU (%iB).\n", __FUNCTION__, len);
|
| 497 |
return;
|
| 498 |
} |
| 499 |
|
| 500 |
pdu_id = *data ++; |
| 501 |
transaction_id = (data[0] << 8) | data[1]; |
| 502 |
plen = (data[2] << 8) | data[3]; |
| 503 |
data += 4;
|
| 504 |
len -= 5;
|
| 505 |
|
| 506 |
if (len != plen) {
|
| 507 |
fprintf(stderr, "%s: wrong SDP PDU length (%iB != %iB).\n",
|
| 508 |
__FUNCTION__, plen, len); |
| 509 |
err = SDP_INVALID_PDU_SIZE; |
| 510 |
goto respond;
|
| 511 |
} |
| 512 |
|
| 513 |
switch (pdu_id) {
|
| 514 |
case SDP_SVC_SEARCH_REQ:
|
| 515 |
rsp_len = sdp_svc_search(sdp, rsp, data, len); |
| 516 |
pdu_id = SDP_SVC_SEARCH_RSP; |
| 517 |
break;
|
| 518 |
|
| 519 |
case SDP_SVC_ATTR_REQ:
|
| 520 |
rsp_len = sdp_attr_get(sdp, rsp, data, len); |
| 521 |
pdu_id = SDP_SVC_ATTR_RSP; |
| 522 |
break;
|
| 523 |
|
| 524 |
case SDP_SVC_SEARCH_ATTR_REQ:
|
| 525 |
rsp_len = sdp_svc_search_attr_get(sdp, rsp, data, len); |
| 526 |
pdu_id = SDP_SVC_SEARCH_ATTR_RSP; |
| 527 |
break;
|
| 528 |
|
| 529 |
case SDP_ERROR_RSP:
|
| 530 |
case SDP_SVC_ATTR_RSP:
|
| 531 |
case SDP_SVC_SEARCH_RSP:
|
| 532 |
case SDP_SVC_SEARCH_ATTR_RSP:
|
| 533 |
default:
|
| 534 |
fprintf(stderr, "%s: unexpected SDP PDU ID %02x.\n",
|
| 535 |
__FUNCTION__, pdu_id); |
| 536 |
err = SDP_INVALID_SYNTAX; |
| 537 |
break;
|
| 538 |
} |
| 539 |
|
| 540 |
if (rsp_len < 0) { |
| 541 |
err = -rsp_len; |
| 542 |
rsp_len = 0;
|
| 543 |
} |
| 544 |
|
| 545 |
respond:
|
| 546 |
if (err) {
|
| 547 |
pdu_id = SDP_ERROR_RSP; |
| 548 |
rsp[rsp_len ++] = err >> 8;
|
| 549 |
rsp[rsp_len ++] = err & 0xff;
|
| 550 |
} |
| 551 |
|
| 552 |
sdu_out = sdp->channel->sdu_out(sdp->channel, rsp_len + PDU_HEADER_SIZE); |
| 553 |
|
| 554 |
sdu_out[0] = pdu_id;
|
| 555 |
sdu_out[1] = transaction_id >> 8; |
| 556 |
sdu_out[2] = transaction_id & 0xff; |
| 557 |
sdu_out[3] = rsp_len >> 8; |
| 558 |
sdu_out[4] = rsp_len & 0xff; |
| 559 |
memcpy(sdu_out + PDU_HEADER_SIZE, rsp, rsp_len); |
| 560 |
|
| 561 |
sdp->channel->sdu_submit(sdp->channel); |
| 562 |
} |
| 563 |
|
| 564 |
static void bt_l2cap_sdp_close_ch(void *opaque) |
| 565 |
{
|
| 566 |
struct bt_l2cap_sdp_state_s *sdp = opaque;
|
| 567 |
int i;
|
| 568 |
|
| 569 |
for (i = 0; i < sdp->services; i ++) { |
| 570 |
g_free(sdp->service_list[i].attribute_list->pair); |
| 571 |
g_free(sdp->service_list[i].attribute_list); |
| 572 |
g_free(sdp->service_list[i].uuid); |
| 573 |
} |
| 574 |
g_free(sdp->service_list); |
| 575 |
g_free(sdp); |
| 576 |
} |
| 577 |
|
| 578 |
struct sdp_def_service_s {
|
| 579 |
uint16_t class_uuid; |
| 580 |
struct sdp_def_attribute_s {
|
| 581 |
uint16_t id; |
| 582 |
struct sdp_def_data_element_s {
|
| 583 |
uint8_t type; |
| 584 |
union {
|
| 585 |
uint32_t uint; |
| 586 |
const char *str; |
| 587 |
struct sdp_def_data_element_s *list;
|
| 588 |
} value; |
| 589 |
} data; |
| 590 |
} attributes[]; |
| 591 |
}; |
| 592 |
|
| 593 |
/* Calculate a safe byte count to allocate that will store the given
|
| 594 |
* element, at the same time count elements of a UUID type. */
|
| 595 |
static int sdp_attr_max_size(struct sdp_def_data_element_s *element, |
| 596 |
int *uuids)
|
| 597 |
{
|
| 598 |
int type = element->type & ~SDP_DSIZE_MASK;
|
| 599 |
int len;
|
| 600 |
|
| 601 |
if (type == SDP_DTYPE_UINT || type == SDP_DTYPE_UUID ||
|
| 602 |
type == SDP_DTYPE_BOOL) {
|
| 603 |
if (type == SDP_DTYPE_UUID)
|
| 604 |
(*uuids) ++; |
| 605 |
return 1 + (1 << (element->type & SDP_DSIZE_MASK)); |
| 606 |
} |
| 607 |
|
| 608 |
if (type == SDP_DTYPE_STRING || type == SDP_DTYPE_URL) {
|
| 609 |
if (element->type & SDP_DSIZE_MASK) {
|
| 610 |
for (len = 0; element->value.str[len] | |
| 611 |
element->value.str[len + 1]; len ++);
|
| 612 |
return len;
|
| 613 |
} else
|
| 614 |
return 2 + strlen(element->value.str); |
| 615 |
} |
| 616 |
|
| 617 |
if (type != SDP_DTYPE_SEQ)
|
| 618 |
exit(-1);
|
| 619 |
len = 2;
|
| 620 |
element = element->value.list; |
| 621 |
while (element->type)
|
| 622 |
len += sdp_attr_max_size(element ++, uuids); |
| 623 |
if (len > 255) |
| 624 |
exit (-1);
|
| 625 |
|
| 626 |
return len;
|
| 627 |
} |
| 628 |
|
| 629 |
static int sdp_attr_write(uint8_t *data, |
| 630 |
struct sdp_def_data_element_s *element, int **uuid) |
| 631 |
{
|
| 632 |
int type = element->type & ~SDP_DSIZE_MASK;
|
| 633 |
int len = 0; |
| 634 |
|
| 635 |
if (type == SDP_DTYPE_UINT || type == SDP_DTYPE_BOOL) {
|
| 636 |
data[len ++] = element->type; |
| 637 |
if ((element->type & SDP_DSIZE_MASK) == SDP_DSIZE_1)
|
| 638 |
data[len ++] = (element->value.uint >> 0) & 0xff; |
| 639 |
else if ((element->type & SDP_DSIZE_MASK) == SDP_DSIZE_2) { |
| 640 |
data[len ++] = (element->value.uint >> 8) & 0xff; |
| 641 |
data[len ++] = (element->value.uint >> 0) & 0xff; |
| 642 |
} else if ((element->type & SDP_DSIZE_MASK) == SDP_DSIZE_4) { |
| 643 |
data[len ++] = (element->value.uint >> 24) & 0xff; |
| 644 |
data[len ++] = (element->value.uint >> 16) & 0xff; |
| 645 |
data[len ++] = (element->value.uint >> 8) & 0xff; |
| 646 |
data[len ++] = (element->value.uint >> 0) & 0xff; |
| 647 |
} |
| 648 |
|
| 649 |
return len;
|
| 650 |
} |
| 651 |
|
| 652 |
if (type == SDP_DTYPE_UUID) {
|
| 653 |
*(*uuid) ++ = element->value.uint; |
| 654 |
|
| 655 |
data[len ++] = element->type; |
| 656 |
data[len ++] = (element->value.uint >> 24) & 0xff; |
| 657 |
data[len ++] = (element->value.uint >> 16) & 0xff; |
| 658 |
data[len ++] = (element->value.uint >> 8) & 0xff; |
| 659 |
data[len ++] = (element->value.uint >> 0) & 0xff; |
| 660 |
memcpy(data + len, bt_base_uuid, 12);
|
| 661 |
|
| 662 |
return len + 12; |
| 663 |
} |
| 664 |
|
| 665 |
data[0] = type | SDP_DSIZE_NEXT1;
|
| 666 |
if (type == SDP_DTYPE_STRING || type == SDP_DTYPE_URL) {
|
| 667 |
if (element->type & SDP_DSIZE_MASK)
|
| 668 |
for (len = 0; element->value.str[len] | |
| 669 |
element->value.str[len + 1]; len ++);
|
| 670 |
else
|
| 671 |
len = strlen(element->value.str); |
| 672 |
memcpy(data + 2, element->value.str, data[1] = len); |
| 673 |
|
| 674 |
return len + 2; |
| 675 |
} |
| 676 |
|
| 677 |
len = 2;
|
| 678 |
element = element->value.list; |
| 679 |
while (element->type)
|
| 680 |
len += sdp_attr_write(data + len, element ++, uuid); |
| 681 |
data[1] = len - 2; |
| 682 |
|
| 683 |
return len;
|
| 684 |
} |
| 685 |
|
| 686 |
static int sdp_attributeid_compare(const struct sdp_service_attribute_s *a, |
| 687 |
const struct sdp_service_attribute_s *b) |
| 688 |
{
|
| 689 |
return (int) b->attribute_id - a->attribute_id; |
| 690 |
} |
| 691 |
|
| 692 |
static int sdp_uuid_compare(const int *a, const int *b) |
| 693 |
{
|
| 694 |
return *a - *b;
|
| 695 |
} |
| 696 |
|
| 697 |
static void sdp_service_record_build(struct sdp_service_record_s *record, |
| 698 |
struct sdp_def_service_s *def, int handle) |
| 699 |
{
|
| 700 |
int len = 0; |
| 701 |
uint8_t *data; |
| 702 |
int *uuid;
|
| 703 |
|
| 704 |
record->uuids = 0;
|
| 705 |
while (def->attributes[record->attributes].data.type) {
|
| 706 |
len += 3;
|
| 707 |
len += sdp_attr_max_size(&def->attributes[record->attributes ++].data, |
| 708 |
&record->uuids); |
| 709 |
} |
| 710 |
record->uuids = 1 << ffs(record->uuids - 1); |
| 711 |
record->attribute_list = |
| 712 |
g_malloc0(record->attributes * sizeof(*record->attribute_list));
|
| 713 |
record->uuid = |
| 714 |
g_malloc0(record->uuids * sizeof(*record->uuid));
|
| 715 |
data = g_malloc(len); |
| 716 |
|
| 717 |
record->attributes = 0;
|
| 718 |
uuid = record->uuid; |
| 719 |
while (def->attributes[record->attributes].data.type) {
|
| 720 |
record->attribute_list[record->attributes].pair = data; |
| 721 |
|
| 722 |
len = 0;
|
| 723 |
data[len ++] = SDP_DTYPE_UINT | SDP_DSIZE_2; |
| 724 |
data[len ++] = def->attributes[record->attributes].id >> 8;
|
| 725 |
data[len ++] = def->attributes[record->attributes].id & 0xff;
|
| 726 |
len += sdp_attr_write(data + len, |
| 727 |
&def->attributes[record->attributes].data, &uuid); |
| 728 |
|
| 729 |
/* Special case: assign a ServiceRecordHandle in sequence */
|
| 730 |
if (def->attributes[record->attributes].id == SDP_ATTR_RECORD_HANDLE)
|
| 731 |
def->attributes[record->attributes].data.value.uint = handle; |
| 732 |
/* Note: we could also assign a ServiceDescription based on
|
| 733 |
* sdp->device.device->lmp_name. */
|
| 734 |
|
| 735 |
record->attribute_list[record->attributes ++].len = len; |
| 736 |
data += len; |
| 737 |
} |
| 738 |
|
| 739 |
/* Sort the attribute list by the AttributeID */
|
| 740 |
qsort(record->attribute_list, record->attributes, |
| 741 |
sizeof(*record->attribute_list),
|
| 742 |
(void *) sdp_attributeid_compare);
|
| 743 |
/* Sort the searchable UUIDs list for bisection */
|
| 744 |
qsort(record->uuid, record->uuids, |
| 745 |
sizeof(*record->uuid),
|
| 746 |
(void *) sdp_uuid_compare);
|
| 747 |
} |
| 748 |
|
| 749 |
static void sdp_service_db_build(struct bt_l2cap_sdp_state_s *sdp, |
| 750 |
struct sdp_def_service_s **service)
|
| 751 |
{
|
| 752 |
sdp->services = 0;
|
| 753 |
while (service[sdp->services])
|
| 754 |
sdp->services ++; |
| 755 |
sdp->service_list = |
| 756 |
g_malloc0(sdp->services * sizeof(*sdp->service_list));
|
| 757 |
|
| 758 |
sdp->services = 0;
|
| 759 |
while (*service) {
|
| 760 |
sdp_service_record_build(&sdp->service_list[sdp->services], |
| 761 |
*service, sdp->services); |
| 762 |
service ++; |
| 763 |
sdp->services ++; |
| 764 |
} |
| 765 |
} |
| 766 |
|
| 767 |
#define LAST { .type = 0 } |
| 768 |
#define SERVICE(name, attrs) \
|
| 769 |
static struct sdp_def_service_s glue(glue(sdp_service_, name), _s) = { \ |
| 770 |
.attributes = { attrs { .data = LAST } }, \
|
| 771 |
}; |
| 772 |
#define ATTRIBUTE(attrid, val) { .id = glue(SDP_ATTR_, attrid), .data = val },
|
| 773 |
#define UINT8(val) { \
|
| 774 |
.type = SDP_DTYPE_UINT | SDP_DSIZE_1, \ |
| 775 |
.value.uint = val, \ |
| 776 |
}, |
| 777 |
#define UINT16(val) { \
|
| 778 |
.type = SDP_DTYPE_UINT | SDP_DSIZE_2, \ |
| 779 |
.value.uint = val, \ |
| 780 |
}, |
| 781 |
#define UINT32(val) { \
|
| 782 |
.type = SDP_DTYPE_UINT | SDP_DSIZE_4, \ |
| 783 |
.value.uint = val, \ |
| 784 |
}, |
| 785 |
#define UUID128(val) { \
|
| 786 |
.type = SDP_DTYPE_UUID | SDP_DSIZE_16, \ |
| 787 |
.value.uint = val, \ |
| 788 |
}, |
| 789 |
#define SDP_TRUE { \
|
| 790 |
.type = SDP_DTYPE_BOOL | SDP_DSIZE_1, \ |
| 791 |
.value.uint = 1, \
|
| 792 |
}, |
| 793 |
#define SDP_FALSE { \
|
| 794 |
.type = SDP_DTYPE_BOOL | SDP_DSIZE_1, \ |
| 795 |
.value.uint = 0, \
|
| 796 |
}, |
| 797 |
#define STRING(val) { \
|
| 798 |
.type = SDP_DTYPE_STRING, \ |
| 799 |
.value.str = val, \ |
| 800 |
}, |
| 801 |
#define ARRAY(...) { \
|
| 802 |
.type = SDP_DTYPE_STRING | SDP_DSIZE_2, \ |
| 803 |
.value.str = (char []) { __VA_ARGS__, 0, 0 }, \ |
| 804 |
}, |
| 805 |
#define URL(val) { \
|
| 806 |
.type = SDP_DTYPE_URL, \ |
| 807 |
.value.str = val, \ |
| 808 |
}, |
| 809 |
#if 1 |
| 810 |
#define LIST(val) { \
|
| 811 |
.type = SDP_DTYPE_SEQ, \ |
| 812 |
.value.list = (struct sdp_def_data_element_s []) { val LAST }, \
|
| 813 |
}, |
| 814 |
#endif
|
| 815 |
|
| 816 |
/* Try to keep each single attribute below MAX_PDU_OUT_SIZE bytes
|
| 817 |
* in resulting SDP data representation size. */
|
| 818 |
|
| 819 |
SERVICE(hid, |
| 820 |
ATTRIBUTE(RECORD_HANDLE, UINT32(0)) /* Filled in later */ |
| 821 |
ATTRIBUTE(SVCLASS_ID_LIST, LIST(UUID128(HID_SVCLASS_ID))) |
| 822 |
ATTRIBUTE(RECORD_STATE, UINT32(1))
|
| 823 |
ATTRIBUTE(PROTO_DESC_LIST, LIST( |
| 824 |
LIST(UUID128(L2CAP_UUID) UINT16(BT_PSM_HID_CTRL)) |
| 825 |
LIST(UUID128(HIDP_UUID)) |
| 826 |
)) |
| 827 |
ATTRIBUTE(BROWSE_GRP_LIST, LIST(UUID128(0x1002)))
|
| 828 |
ATTRIBUTE(LANG_BASE_ATTR_ID_LIST, LIST( |
| 829 |
UINT16(0x656e) UINT16(0x006a) UINT16(0x0100) |
| 830 |
)) |
| 831 |
ATTRIBUTE(PFILE_DESC_LIST, LIST( |
| 832 |
LIST(UUID128(HID_PROFILE_ID) UINT16(0x0100))
|
| 833 |
)) |
| 834 |
ATTRIBUTE(DOC_URL, URL("http://bellard.org/qemu/user-doc.html"))
|
| 835 |
ATTRIBUTE(SVCNAME_PRIMARY, STRING("QEMU Bluetooth HID"))
|
| 836 |
ATTRIBUTE(SVCDESC_PRIMARY, STRING("QEMU Keyboard/Mouse"))
|
| 837 |
ATTRIBUTE(SVCPROV_PRIMARY, STRING("QEMU"))
|
| 838 |
|
| 839 |
/* Profile specific */
|
| 840 |
ATTRIBUTE(DEVICE_RELEASE_NUMBER, UINT16(0x0091)) /* Deprecated, remove */ |
| 841 |
ATTRIBUTE(PARSER_VERSION, UINT16(0x0111))
|
| 842 |
/* TODO: extract from l2cap_device->device.class[0] */
|
| 843 |
ATTRIBUTE(DEVICE_SUBCLASS, UINT8(0x40))
|
| 844 |
ATTRIBUTE(COUNTRY_CODE, UINT8(0x15))
|
| 845 |
ATTRIBUTE(VIRTUAL_CABLE, SDP_TRUE) |
| 846 |
ATTRIBUTE(RECONNECT_INITIATE, SDP_FALSE) |
| 847 |
/* TODO: extract from hid->usbdev->report_desc */
|
| 848 |
ATTRIBUTE(DESCRIPTOR_LIST, LIST( |
| 849 |
LIST(UINT8(0x22) ARRAY(
|
| 850 |
0x05, 0x01, /* Usage Page (Generic Desktop) */ |
| 851 |
0x09, 0x06, /* Usage (Keyboard) */ |
| 852 |
0xa1, 0x01, /* Collection (Application) */ |
| 853 |
0x75, 0x01, /* Report Size (1) */ |
| 854 |
0x95, 0x08, /* Report Count (8) */ |
| 855 |
0x05, 0x07, /* Usage Page (Key Codes) */ |
| 856 |
0x19, 0xe0, /* Usage Minimum (224) */ |
| 857 |
0x29, 0xe7, /* Usage Maximum (231) */ |
| 858 |
0x15, 0x00, /* Logical Minimum (0) */ |
| 859 |
0x25, 0x01, /* Logical Maximum (1) */ |
| 860 |
0x81, 0x02, /* Input (Data, Variable, Absolute) */ |
| 861 |
0x95, 0x01, /* Report Count (1) */ |
| 862 |
0x75, 0x08, /* Report Size (8) */ |
| 863 |
0x81, 0x01, /* Input (Constant) */ |
| 864 |
0x95, 0x05, /* Report Count (5) */ |
| 865 |
0x75, 0x01, /* Report Size (1) */ |
| 866 |
0x05, 0x08, /* Usage Page (LEDs) */ |
| 867 |
0x19, 0x01, /* Usage Minimum (1) */ |
| 868 |
0x29, 0x05, /* Usage Maximum (5) */ |
| 869 |
0x91, 0x02, /* Output (Data, Variable, Absolute) */ |
| 870 |
0x95, 0x01, /* Report Count (1) */ |
| 871 |
0x75, 0x03, /* Report Size (3) */ |
| 872 |
0x91, 0x01, /* Output (Constant) */ |
| 873 |
0x95, 0x06, /* Report Count (6) */ |
| 874 |
0x75, 0x08, /* Report Size (8) */ |
| 875 |
0x15, 0x00, /* Logical Minimum (0) */ |
| 876 |
0x25, 0xff, /* Logical Maximum (255) */ |
| 877 |
0x05, 0x07, /* Usage Page (Key Codes) */ |
| 878 |
0x19, 0x00, /* Usage Minimum (0) */ |
| 879 |
0x29, 0xff, /* Usage Maximum (255) */ |
| 880 |
0x81, 0x00, /* Input (Data, Array) */ |
| 881 |
0xc0 /* End Collection */ |
| 882 |
)))) |
| 883 |
ATTRIBUTE(LANG_ID_BASE_LIST, LIST( |
| 884 |
LIST(UINT16(0x0409) UINT16(0x0100)) |
| 885 |
)) |
| 886 |
ATTRIBUTE(SDP_DISABLE, SDP_FALSE) |
| 887 |
ATTRIBUTE(BATTERY_POWER, SDP_TRUE) |
| 888 |
ATTRIBUTE(REMOTE_WAKEUP, SDP_TRUE) |
| 889 |
ATTRIBUTE(BOOT_DEVICE, SDP_TRUE) /* XXX: untested */
|
| 890 |
ATTRIBUTE(SUPERVISION_TIMEOUT, UINT16(0x0c80))
|
| 891 |
ATTRIBUTE(NORMALLY_CONNECTABLE, SDP_TRUE) |
| 892 |
ATTRIBUTE(PROFILE_VERSION, UINT16(0x0100))
|
| 893 |
) |
| 894 |
|
| 895 |
SERVICE(sdp, |
| 896 |
ATTRIBUTE(RECORD_HANDLE, UINT32(0)) /* Filled in later */ |
| 897 |
ATTRIBUTE(SVCLASS_ID_LIST, LIST(UUID128(SDP_SERVER_SVCLASS_ID))) |
| 898 |
ATTRIBUTE(RECORD_STATE, UINT32(1))
|
| 899 |
ATTRIBUTE(PROTO_DESC_LIST, LIST( |
| 900 |
LIST(UUID128(L2CAP_UUID) UINT16(BT_PSM_SDP)) |
| 901 |
LIST(UUID128(SDP_UUID)) |
| 902 |
)) |
| 903 |
ATTRIBUTE(BROWSE_GRP_LIST, LIST(UUID128(0x1002)))
|
| 904 |
ATTRIBUTE(LANG_BASE_ATTR_ID_LIST, LIST( |
| 905 |
UINT16(0x656e) UINT16(0x006a) UINT16(0x0100) |
| 906 |
)) |
| 907 |
ATTRIBUTE(PFILE_DESC_LIST, LIST( |
| 908 |
LIST(UUID128(SDP_SERVER_PROFILE_ID) UINT16(0x0100))
|
| 909 |
)) |
| 910 |
ATTRIBUTE(DOC_URL, URL("http://bellard.org/qemu/user-doc.html"))
|
| 911 |
ATTRIBUTE(SVCPROV_PRIMARY, STRING("QEMU"))
|
| 912 |
|
| 913 |
/* Profile specific */
|
| 914 |
ATTRIBUTE(VERSION_NUM_LIST, LIST(UINT16(0x0100)))
|
| 915 |
ATTRIBUTE(SVCDB_STATE , UINT32(1))
|
| 916 |
) |
| 917 |
|
| 918 |
SERVICE(pnp, |
| 919 |
ATTRIBUTE(RECORD_HANDLE, UINT32(0)) /* Filled in later */ |
| 920 |
ATTRIBUTE(SVCLASS_ID_LIST, LIST(UUID128(PNP_INFO_SVCLASS_ID))) |
| 921 |
ATTRIBUTE(RECORD_STATE, UINT32(1))
|
| 922 |
ATTRIBUTE(PROTO_DESC_LIST, LIST( |
| 923 |
LIST(UUID128(L2CAP_UUID) UINT16(BT_PSM_SDP)) |
| 924 |
LIST(UUID128(SDP_UUID)) |
| 925 |
)) |
| 926 |
ATTRIBUTE(BROWSE_GRP_LIST, LIST(UUID128(0x1002)))
|
| 927 |
ATTRIBUTE(LANG_BASE_ATTR_ID_LIST, LIST( |
| 928 |
UINT16(0x656e) UINT16(0x006a) UINT16(0x0100) |
| 929 |
)) |
| 930 |
ATTRIBUTE(PFILE_DESC_LIST, LIST( |
| 931 |
LIST(UUID128(PNP_INFO_PROFILE_ID) UINT16(0x0100))
|
| 932 |
)) |
| 933 |
ATTRIBUTE(DOC_URL, URL("http://bellard.org/qemu/user-doc.html"))
|
| 934 |
ATTRIBUTE(SVCPROV_PRIMARY, STRING("QEMU"))
|
| 935 |
|
| 936 |
/* Profile specific */
|
| 937 |
ATTRIBUTE(SPECIFICATION_ID, UINT16(0x0100))
|
| 938 |
ATTRIBUTE(VERSION, UINT16(0x0100))
|
| 939 |
ATTRIBUTE(PRIMARY_RECORD, SDP_TRUE) |
| 940 |
) |
| 941 |
|
| 942 |
static int bt_l2cap_sdp_new_ch(struct bt_l2cap_device_s *dev, |
| 943 |
struct bt_l2cap_conn_params_s *params)
|
| 944 |
{
|
| 945 |
struct bt_l2cap_sdp_state_s *sdp = g_malloc0(sizeof(*sdp)); |
| 946 |
struct sdp_def_service_s *services[] = {
|
| 947 |
&sdp_service_sdp_s, |
| 948 |
&sdp_service_hid_s, |
| 949 |
&sdp_service_pnp_s, |
| 950 |
NULL,
|
| 951 |
}; |
| 952 |
|
| 953 |
sdp->channel = params; |
| 954 |
sdp->channel->opaque = sdp; |
| 955 |
sdp->channel->close = bt_l2cap_sdp_close_ch; |
| 956 |
sdp->channel->sdu_in = bt_l2cap_sdp_sdu_in; |
| 957 |
|
| 958 |
sdp_service_db_build(sdp, services); |
| 959 |
|
| 960 |
return 0; |
| 961 |
} |
| 962 |
|
| 963 |
void bt_l2cap_sdp_init(struct bt_l2cap_device_s *dev) |
| 964 |
{
|
| 965 |
bt_l2cap_psm_register(dev, BT_PSM_SDP, |
| 966 |
MAX_PDU_OUT_SIZE, bt_l2cap_sdp_new_ch); |
| 967 |
} |