static void
server_close_fd(server_p srv, int32_t fd)
{
provider_p provider = NULL, provider_next = NULL;
assert(FD_ISSET(fd, &srv->fdset));
assert(srv->fdidx[fd].valid);
close(fd);
FD_CLR(fd, &srv->fdset);
if (fd == srv->maxfd)
srv->maxfd --;
if (srv->fdidx[fd].rsp != NULL)
free(srv->fdidx[fd].rsp);
memset(&srv->fdidx[fd], 0, sizeof(srv->fdidx[fd]));
for (provider = provider_get_first();
provider != NULL;
provider = provider_next) {
provider_next = provider_get_next(provider);
if (provider->fd == fd)
provider_unregister(provider);
}
}
int32_t
server_prepare_service_search_attribute_response(server_p srv, int32_t fd)
{
uint8_t const *req = srv->req + sizeof(sdp_pdu_t);
uint8_t const *req_end = req + ((sdp_pdu_p)(srv->req))->len;
uint8_t *rsp = srv->fdidx[fd].rsp;
uint8_t const *rsp_end = rsp + L2CAP_MTU_MAXIMUM;
uint8_t const *aidptr = NULL;
provider_t *provider = NULL;
int32_t type, rsp_limit, ucount, aidlen, cslen, cs;
uint128_t ulist[12];
/*
* Minimal Service Search Attribute Request request
*
* seq8 len8 - 2 bytes
* uuid16 value16 - 3 bytes ServiceSearchPattern
* value16 - 2 bytes MaximumAttributeByteCount
* seq8 len8 - 2 bytes
* uint16 value16 - 3 bytes AttributeIDList
* value8 - 1 byte ContinuationState
*/
/* Get ServiceSearchPattern */
ucount = server_get_service_search_pattern(&req, req_end, ulist);
if (ucount < 1 || ucount > 12)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* Get MaximumAttributeByteCount */
if (req + 2 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET16(rsp_limit, req);
if (rsp_limit <= 0)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* Get size of AttributeIDList */
if (req + 1 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
aidlen = 0;
SDP_GET8(type, req);
switch (type) {
case SDP_DATA_SEQ8:
if (req + 1 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET8(aidlen, req);
break;
case SDP_DATA_SEQ16:
if (req + 2 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET16(aidlen, req);
break;
case SDP_DATA_SEQ32:
if (req + 4 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET32(aidlen, req);
break;
}
if (aidlen <= 0)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
aidptr = req;
req += aidlen;
/* Get ContinuationState */
if (req + 1 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET8(cslen, req);
if (cslen == 2 && req + 2 == req_end)
SDP_GET16(cs, req);
else if (cslen == 0 && req == req_end)
cs = 0;
else
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* Process the request. First, check continuation state */
if (srv->fdidx[fd].rsp_cs != cs)
return (SDP_ERROR_CODE_INVALID_CONTINUATION_STATE);
if (srv->fdidx[fd].rsp_size > 0)
return (0);
/*
* Service Search Attribute Response format
*
* value16 - 2 bytes AttributeListByteCount (not incl.)
* seq8 len16 - 3 bytes
* attr list - 3+ bytes AttributeLists
* [ attr list ]
*/
rsp += 3; /* leave space for sequence header */
for (provider = provider_get_first();
provider != NULL;
provider = provider_get_next(provider)) {
if (!provider_match_bdaddr(provider, &srv->req_sa.bt_bdaddr))
continue;
if (!provider_match_uuid(provider, ulist, ucount))
continue;
cs = server_prepare_attr_list(provider,
aidptr, aidptr + aidlen, rsp, rsp_end);
if (cs < 0)
return (SDP_ERROR_CODE_INSUFFICIENT_RESOURCES);
rsp += cs;
}
/* Set reply size (not counting PDU header and continuation state) */
srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t) - 2;
if (srv->fdidx[fd].rsp_limit > rsp_limit)
srv->fdidx[fd].rsp_limit = rsp_limit;
srv->fdidx[fd].rsp_size = rsp - srv->fdidx[fd].rsp;
srv->fdidx[fd].rsp_cs = 0;
/* Fix AttributeLists sequence header */
rsp = srv->fdidx[fd].rsp;
SDP_PUT8(SDP_DATA_SEQ16, rsp);
SDP_PUT16(srv->fdidx[fd].rsp_size - 3, rsp);
return (0);
}
int32_t
server_prepare_service_search_attribute_response(server_p srv, int32_t fd)
{
uint8_t const *req = srv->req + sizeof(sdp_pdu_t);
uint8_t const *req_end = req + ((sdp_pdu_p)(srv->req))->len;
uint8_t *rsp = srv->fdidx[fd].rsp;
uint8_t const *rsp_end = rsp + NG_L2CAP_MTU_MAXIMUM;
uint8_t const *sspptr = NULL, *aidptr = NULL;
uint8_t *ptr = NULL;
provider_t *provider = NULL;
int32_t type, rsp_limit, ssplen, aidlen, cslen, cs;
uint128_t uuid, puuid;
/*
* Minimal Service Search Attribute Request request
*
* seq8 len8 - 2 bytes
* uuid16 value16 - 3 bytes ServiceSearchPattern
* value16 - 2 bytes MaximumAttributeByteCount
* seq8 len8 - 2 bytes
* uint16 value16 - 3 bytes AttributeIDList
* value8 - 1 byte ContinuationState
*/
if (req_end - req < 13)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* Get size of ServiceSearchPattern */
ssplen = 0;
SDP_GET8(type, req);
switch (type) {
case SDP_DATA_SEQ8:
SDP_GET8(ssplen, req);
break;
case SDP_DATA_SEQ16:
SDP_GET16(ssplen, req);
break;
case SDP_DATA_SEQ32:
SDP_GET32(ssplen, req);
break;
}
if (ssplen <= 0)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
sspptr = req;
req += ssplen;
/* Get MaximumAttributeByteCount */
if (req + 2 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET16(rsp_limit, req);
if (rsp_limit <= 0)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* Get size of AttributeIDList */
if (req + 1 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
aidlen = 0;
SDP_GET8(type, req);
switch (type) {
case SDP_DATA_SEQ8:
if (req + 1 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET8(aidlen, req);
break;
case SDP_DATA_SEQ16:
if (req + 2 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET16(aidlen, req);
break;
case SDP_DATA_SEQ32:
if (req + 4 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET32(aidlen, req);
break;
}
if (aidlen <= 0)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
aidptr = req;
req += aidlen;
/* Get ContinuationState */
if (req + 1 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET8(cslen, req);
if (cslen != 0) {
if (cslen != 2 || req_end - req != 2)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET16(cs, req);
} else
cs = 0;
/* Process the request. First, check continuation state */
if (srv->fdidx[fd].rsp_cs != cs)
return (SDP_ERROR_CODE_INVALID_CONTINUATION_STATE);
if (srv->fdidx[fd].rsp_size > 0)
return (0);
/*
* Service Search Attribute Response format
*
* value16 - 2 bytes AttributeListByteCount (not incl.)
* seq8 len16 - 3 bytes
* attr list - 3+ bytes AttributeLists
* [ attr list ]
*/
ptr = rsp + 3;
while (ssplen > 0) {
SDP_GET8(type, sspptr);
ssplen --;
switch (type) {
case SDP_DATA_UUID16:
if (ssplen < 2)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
memcpy(&uuid, &uuid_base, sizeof(uuid));
uuid.b[2] = *sspptr ++;
uuid.b[3] = *sspptr ++;
ssplen -= 2;
break;
case SDP_DATA_UUID32:
if (ssplen < 4)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
memcpy(&uuid, &uuid_base, sizeof(uuid));
uuid.b[0] = *sspptr ++;
uuid.b[1] = *sspptr ++;
uuid.b[2] = *sspptr ++;
uuid.b[3] = *sspptr ++;
ssplen -= 4;
break;
case SDP_DATA_UUID128:
if (ssplen < 16)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
memcpy(uuid.b, sspptr, 16);
sspptr += 16;
ssplen -= 16;
break;
default:
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* NOT REACHED */
}
for (provider = provider_get_first();
provider != NULL;
provider = provider_get_next(provider)) {
if (!provider_match_bdaddr(provider, &srv->req_sa.l2cap_bdaddr))
continue;
memcpy(&puuid, &uuid_base, sizeof(puuid));
puuid.b[2] = provider->profile->uuid >> 8;
puuid.b[3] = provider->profile->uuid;
if (memcmp(&uuid, &puuid, sizeof(uuid)) != 0 &&
memcmp(&uuid, &uuid_public_browse_group, sizeof(uuid)) != 0)
continue;
cs = server_prepare_attr_list(provider,
aidptr, aidptr + aidlen, ptr, rsp_end);
if (cs < 0)
return (SDP_ERROR_CODE_INSUFFICIENT_RESOURCES);
ptr += cs;
}
}
/* Set reply size (not counting PDU header and continuation state) */
srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t) - 2;
if (srv->fdidx[fd].rsp_limit > rsp_limit)
srv->fdidx[fd].rsp_limit = rsp_limit;
srv->fdidx[fd].rsp_size = ptr - rsp;
srv->fdidx[fd].rsp_cs = 0;
/* Fix AttributeLists sequence header */
ptr = rsp;
SDP_PUT8(SDP_DATA_SEQ16, ptr);
SDP_PUT16(srv->fdidx[fd].rsp_size - 3, ptr);
return (0);
}
int32_t
server_prepare_service_search_response(server_p srv, int32_t fd)
{
uint8_t const *req = srv->req + sizeof(sdp_pdu_t);
uint8_t const *req_end = req + ((sdp_pdu_p)(srv->req))->len;
uint8_t *rsp = srv->fdidx[fd].rsp;
uint8_t const *rsp_end = rsp + NG_L2CAP_MTU_MAXIMUM;
uint8_t *ptr = NULL;
provider_t *provider = NULL;
int32_t type, ssplen, rsp_limit, rcount, cslen, cs;
uint128_t uuid, puuid;
/*
* Minimal SDP Service Search Request
*
* seq8 len8 - 2 bytes
* uuid16 value16 - 3 bytes ServiceSearchPattern
* value16 - 2 bytes MaximumServiceRecordCount
* value8 - 1 byte ContinuationState
*/
if (req_end - req < 8)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* Get size of ServiceSearchPattern */
ssplen = 0;
SDP_GET8(type, req);
switch (type) {
case SDP_DATA_SEQ8:
SDP_GET8(ssplen, req);
break;
case SDP_DATA_SEQ16:
SDP_GET16(ssplen, req);
break;
case SDP_DATA_SEQ32:
SDP_GET32(ssplen, req);
break;
}
if (ssplen <= 0)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
ptr = (uint8_t *) req + ssplen;
/* Get MaximumServiceRecordCount */
if (ptr + 2 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET16(rsp_limit, ptr);
if (rsp_limit <= 0)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* Get ContinuationState */
if (ptr + 1 > req_end)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET8(cslen, ptr);
if (cslen != 0) {
if (cslen != 2 || req_end - ptr != 2)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
SDP_GET16(cs, ptr);
} else
cs = 0;
/* Process the request. First, check continuation state */
if (srv->fdidx[fd].rsp_cs != cs)
return (SDP_ERROR_CODE_INVALID_CONTINUATION_STATE);
if (srv->fdidx[fd].rsp_size > 0)
return (0);
/*
* Service Search Response format
*
* value16 - 2 bytes TotalServiceRecordCount (not incl.)
* value16 - 2 bytes CurrentServiceRecordCount (not incl.)
* value32 - 4 bytes handle
* [ value32 ]
*
* Calculate how many record handles we can fit
* in our reply buffer and adjust rlimit.
*/
ptr = rsp;
rcount = (rsp_end - ptr) / 4;
if (rcount < rsp_limit)
rsp_limit = rcount;
/* Look for the record handles */
for (rcount = 0; ssplen > 0 && rcount < rsp_limit; ) {
SDP_GET8(type, req);
ssplen --;
switch (type) {
case SDP_DATA_UUID16:
if (ssplen < 2)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
memcpy(&uuid, &uuid_base, sizeof(uuid));
uuid.b[2] = *req ++;
uuid.b[3] = *req ++;
ssplen -= 2;
break;
case SDP_DATA_UUID32:
if (ssplen < 4)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
memcpy(&uuid, &uuid_base, sizeof(uuid));
uuid.b[0] = *req ++;
uuid.b[1] = *req ++;
uuid.b[2] = *req ++;
uuid.b[3] = *req ++;
ssplen -= 4;
break;
case SDP_DATA_UUID128:
if (ssplen < 16)
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
memcpy(uuid.b, req, 16);
req += 16;
ssplen -= 16;
break;
default:
return (SDP_ERROR_CODE_INVALID_REQUEST_SYNTAX);
/* NOT REACHED */
}
for (provider = provider_get_first();
provider != NULL && rcount < rsp_limit;
provider = provider_get_next(provider)) {
if (!provider_match_bdaddr(provider, &srv->req_sa.l2cap_bdaddr))
continue;
memcpy(&puuid, &uuid_base, sizeof(puuid));
puuid.b[2] = provider->profile->uuid >> 8;
puuid.b[3] = provider->profile->uuid;
if (memcmp(&uuid, &puuid, sizeof(uuid)) == 0 ||
memcmp(&uuid, &uuid_public_browse_group, sizeof(uuid)) == 0) {
SDP_PUT32(provider->handle, ptr);
rcount ++;
}
}
}
/* Set reply size (not counting PDU header and continuation state) */
srv->fdidx[fd].rsp_limit = srv->fdidx[fd].omtu - sizeof(sdp_pdu_t) - 4;
srv->fdidx[fd].rsp_size = ptr - rsp;
srv->fdidx[fd].rsp_cs = 0;
return (0);
}
