static void read_char_helper(guint8 status, const guint8 *rpdu,
guint16 rlen, gpointer user_data)
{
struct read_long_data *long_read = user_data;
size_t buflen;
uint8_t *buf = g_attrib_get_buffer(long_read->attrib, &buflen);
guint16 plen;
guint id;
if (status != 0 || rlen < buflen)
goto done;
long_read->buffer = g_malloc(rlen);
if (long_read->buffer == NULL) {
status = ATT_ECODE_INSUFF_RESOURCES;
goto done;
}
memcpy(long_read->buffer, rpdu, rlen);
long_read->size = rlen;
plen = enc_read_blob_req(long_read->handle, rlen - 1, buf, buflen);
id = g_attrib_send(long_read->attrib, long_read->id, buf, plen,
read_blob_helper, long_read, read_long_destroy);
if (id != 0) {
__sync_fetch_and_add(&long_read->ref, 1);
return;
}
status = ATT_ECODE_IO;
done:
long_read->func(status, rpdu, rlen, long_read->user_data);
}
static void read_char_helper(guint8 status, const guint8 *rpdu,
guint16 rlen, gpointer user_data)
{
struct read_long_data *long_read = user_data;
int buflen;
uint8_t *buf = g_attrib_get_buffer(long_read->attrib, &buflen);
guint16 plen;
guint id;
if (status != 0 || rlen < buflen)
goto done;
long_read->buffer = g_malloc(rlen);
if (long_read->buffer == NULL)
goto done;
memcpy(long_read->buffer, rpdu, rlen);
long_read->size = rlen;
plen = enc_read_blob_req(long_read->handle, rlen - 1, buf, buflen);
id = g_attrib_send(long_read->attrib, long_read->id,
ATT_OP_READ_BLOB_REQ, buf, plen, read_blob_helper,
long_read, read_long_destroy);
if (id != 0) {
g_atomic_int_inc(&long_read->ref);
return;
}
status = ATT_ECODE_IO;
done:
long_read->func(status, rpdu, rlen, long_read->user_data);
}
static void read_blob_helper(guint8 status, const guint8 *rpdu, guint16 rlen,
gpointer user_data)
{
struct read_long_data *long_read = user_data;
uint8_t *buf;
int buflen;
guint8 *tmp;
guint16 plen;
guint id;
if (status != 0 || rlen == 1) {
status = 0;
goto done;
}
tmp = g_try_realloc(long_read->buffer, long_read->size + rlen - 1);
if (tmp == NULL) {
status = ATT_ECODE_INSUFF_RESOURCES;
goto done;
}
memcpy(&tmp[long_read->size], &rpdu[1], rlen - 1);
long_read->buffer = tmp;
long_read->size += rlen - 1;
buf = g_attrib_get_buffer(long_read->attrib, &buflen);
if (rlen < buflen)
goto done;
plen = enc_read_blob_req(long_read->handle, long_read->size - 1,
buf, buflen);
id = g_attrib_send(long_read->attrib, long_read->id,
ATT_OP_READ_BLOB_REQ, buf, plen,
read_blob_helper, long_read, read_long_destroy);
if (id != 0) {
g_atomic_int_inc(&long_read->ref);
return;
}
status = ATT_ECODE_IO;
done:
long_read->func(status, long_read->buffer, long_read->size,
long_read->user_data);
}
guint gatt_read_char(GAttrib *attrib, uint16_t handle, uint16_t offset,
GAttribResultFunc func, gpointer user_data)
{
uint8_t *buf;
int buflen;
guint16 plen;
guint id;
struct read_long_data *long_read;
long_read = g_try_new0(struct read_long_data, 1);
if (long_read == NULL)
return 0;
long_read->attrib = attrib;
long_read->func = func;
long_read->user_data = user_data;
long_read->handle = handle;
buf = g_attrib_get_buffer(attrib, &buflen);
if (offset > 0) {
plen = enc_read_blob_req(long_read->handle, offset, buf,
buflen);
id = g_attrib_send(attrib, 0, ATT_OP_READ_BLOB_REQ, buf, plen,
read_blob_helper, long_read, read_long_destroy);
} else {
plen = enc_read_req(handle, buf, buflen);
id = g_attrib_send(attrib, 0, ATT_OP_READ_REQ, buf, plen,
read_char_helper, long_read, read_long_destroy);
}
if (id == 0)
g_free(long_read);
else {
g_atomic_int_inc(&long_read->ref);
long_read->id = id;
}
return id;
}
guint gatt_read_char_single(GAttrib *attrib, uint16_t handle, uint16_t offset,
GAttribResultFunc func, gpointer user_data)
{
uint8_t *buf;
size_t buflen;
guint16 plen;
guint id;
struct read_data *read;
read = g_try_new0(struct read_data, 1);
if (read == NULL)
return 0;
read->attrib = g_attrib_ref(attrib);
read->func = func;
read->user_data = user_data;
read->handle = handle;
read->offset = offset;
buf = g_attrib_get_buffer(attrib, &buflen);
if (!offset)
plen = enc_read_req(handle, buf, buflen);
else
plen = enc_read_blob_req(handle, offset, buf, buflen);
id = g_attrib_send(attrib, 0, buf, plen, read_char_helper,
read, read_destroy);
if (id == 0) {
g_attrib_unref(read->attrib);
g_free(read);
} else {
__sync_fetch_and_add(&read->ref, 1);
read->id = id;
}
return id;
}