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Add support to deal with Read by Type PDUs

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This adds att_read_by_type_{encode,decode}, so we can create Read by Type
Requests and parse Read by Type Responses.
This commit is contained in:
Vinicius Costa Gomes 2010-07-21 14:01:02 -03:00 committed by Johan Hedberg
parent 17b9256fbd
commit dafe0b2820
2 changed files with 55 additions and 0 deletions
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52
attrib/att.c
View File

@ -142,3 +142,55 @@ uint16_t att_find_by_type_encode(uint16_t start, uint16_t end, uuid_t *uuid,
{
return 0;
}
uint16_t att_read_by_type_encode(uint16_t start, uint16_t end, uuid_t *uuid,
uint8_t *pdu, int len)
{
uint16_t *p16;
/* FIXME: UUID128 is not supported */
if (!uuid)
return 0;
if (uuid->type != SDP_UUID16)
return 0;
if (len < 7)
return 0;
pdu[0] = ATT_OP_READ_BY_TYPE_REQ;
p16 = (void *) &pdu[1];
*p16 = htobs(start);
p16++;
*p16 = htobs(end);
p16++;
*p16 = htobs(uuid->value.uuid16);
return 7;
}
struct att_data_list *add_read_by_type_decode(const uint8_t *pdu, int len)
{
struct att_data_list *list;
const uint8_t *ptr;
int i;
if (pdu[0] != ATT_OP_READ_BY_TYPE_RESP)
return NULL;
list = malloc(sizeof(struct att_data_list));
list->len = pdu[1];
list->num = len / list->len;
list->data = malloc(sizeof(uint8_t *) * list->num);
ptr = &pdu[2];
for (i = 0; i < list->num; i++) {
list->data[i] = malloc(sizeof(uint8_t) * list->len);
memcpy(list->data[i], ptr, list->len);
ptr += list->len;
}
return list;
}

3
attrib/att.h
View File

@ -128,6 +128,9 @@ uint16_t att_read_by_grp_type_encode(uint16_t start, uint16_t end, uuid_t *uuid,
uint16_t att_find_by_type_encode(uint16_t start, uint16_t end, uuid_t *uuid,
uint8_t *pdu, int len);
struct att_data_list *att_read_by_grp_type_decode(const uint8_t *pdu, int len);
uint16_t att_read_by_type_encode(uint16_t start, uint16_t end, uuid_t *uuid,
uint8_t *pdu, int len);
struct att_data_list *add_read_by_type_decode(const uint8_t *pdu, int len);
#ifdef __cplusplus
}