static void on_handshake_data_sent_to_peer(grpc_exec_ctx *exec_ctx, void *arg,
grpc_error *error) {
security_handshaker *h = arg;
gpr_mu_lock(&h->mu);
if (error != GRPC_ERROR_NONE || h->shutdown) {
security_handshake_failed_locked(
exec_ctx, h,
GRPC_ERROR_CREATE_REFERENCING("Handshake write failed", &error, 1));
gpr_mu_unlock(&h->mu);
security_handshaker_unref(exec_ctx, h);
return;
}
/* We may be done. */
if (tsi_handshaker_is_in_progress(h->handshaker)) {
grpc_endpoint_read(exec_ctx, h->args->endpoint, h->args->read_buffer,
&h->on_handshake_data_received_from_peer);
} else {
error = check_peer_locked(exec_ctx, h);
if (error != GRPC_ERROR_NONE) {
security_handshake_failed_locked(exec_ctx, h, error);
gpr_mu_unlock(&h->mu);
security_handshaker_unref(exec_ctx, h);
return;
}
}
gpr_mu_unlock(&h->mu);
}
/* If setup is NULL, the setup is done. */
static void on_handshake_data_sent_to_peer(void *setup,
grpc_endpoint_cb_status error) {
grpc_secure_transport_setup *s = setup;
/* Make sure that write is OK. */
if (error != GRPC_ENDPOINT_CB_OK) {
gpr_log(GPR_ERROR, "Write failed with error %d.", error);
if (setup != NULL) secure_transport_setup_done(s, 0);
return;
}
/* We may be done. */
if (tsi_handshaker_is_in_progress(s->handshaker)) {
/* TODO(klempner,jboeuf): This should probably use the client setup
deadline */
grpc_endpoint_notify_on_read(s->endpoint,
on_handshake_data_received_from_peer, setup);
} else {
check_peer(s);
}
}
/* If handshake is NULL, the handshake is done. */
static void on_handshake_data_sent_to_peer(grpc_exec_ctx *exec_ctx,
void *handshake, grpc_error *error) {
grpc_security_handshake *h = handshake;
/* Make sure that write is OK. */
if (error != GRPC_ERROR_NONE) {
if (handshake != NULL)
security_handshake_done(
exec_ctx, h,
GRPC_ERROR_CREATE_REFERENCING("Handshake write failed", &error, 1));
return;
}
/* We may be done. */
if (tsi_handshaker_is_in_progress(h->handshaker)) {
/* TODO(klempner,jboeuf): This should probably use the client setup
deadline */
grpc_endpoint_read(exec_ctx, h->wrapped_endpoint, &h->incoming,
&h->on_handshake_data_received_from_peer);
} else {
check_peer(exec_ctx, h);
}
}
static void on_handshake_data_received_from_peer(grpc_exec_ctx *exec_ctx,
void *handshake,
grpc_error *error) {
grpc_security_handshake *h = handshake;
size_t consumed_slice_size = 0;
tsi_result result = TSI_OK;
size_t i;
size_t num_left_overs;
int has_left_overs_in_current_slice = 0;
if (error != GRPC_ERROR_NONE) {
security_handshake_done(
exec_ctx, h,
GRPC_ERROR_CREATE_REFERENCING("Handshake read failed", &error, 1));
return;
}
for (i = 0; i < h->incoming.count; i++) {
consumed_slice_size = GPR_SLICE_LENGTH(h->incoming.slices[i]);
result = tsi_handshaker_process_bytes_from_peer(
h->handshaker, GPR_SLICE_START_PTR(h->incoming.slices[i]),
&consumed_slice_size);
if (!tsi_handshaker_is_in_progress(h->handshaker)) break;
}
if (tsi_handshaker_is_in_progress(h->handshaker)) {
/* We may need more data. */
if (result == TSI_INCOMPLETE_DATA) {
grpc_endpoint_read(exec_ctx, h->wrapped_endpoint, &h->incoming,
&h->on_handshake_data_received_from_peer);
return;
} else {
send_handshake_bytes_to_peer(exec_ctx, h);
return;
}
}
if (result != TSI_OK) {
security_handshake_done(exec_ctx, h,
grpc_set_tsi_error_result(
GRPC_ERROR_CREATE("Handshake failed"), result));
return;
}
/* Handshake is done and successful this point. */
has_left_overs_in_current_slice =
(consumed_slice_size < GPR_SLICE_LENGTH(h->incoming.slices[i]));
num_left_overs =
(has_left_overs_in_current_slice ? 1 : 0) + h->incoming.count - i - 1;
if (num_left_overs == 0) {
check_peer(exec_ctx, h);
return;
}
/* Put the leftovers in our buffer (ownership transfered). */
if (has_left_overs_in_current_slice) {
gpr_slice_buffer_add(
&h->left_overs,
gpr_slice_split_tail(&h->incoming.slices[i], consumed_slice_size));
gpr_slice_unref(
h->incoming.slices[i]); /* split_tail above increments refcount. */
}
gpr_slice_buffer_addn(
&h->left_overs, &h->incoming.slices[i + 1],
num_left_overs - (size_t)has_left_overs_in_current_slice);
check_peer(exec_ctx, h);
}
static void on_handshake_data_received_from_peer(grpc_exec_ctx *exec_ctx,
void *arg, grpc_error *error) {
security_handshaker *h = arg;
gpr_mu_lock(&h->mu);
if (error != GRPC_ERROR_NONE || h->shutdown) {
security_handshake_failed_locked(
exec_ctx, h,
GRPC_ERROR_CREATE_REFERENCING("Handshake read failed", &error, 1));
gpr_mu_unlock(&h->mu);
security_handshaker_unref(exec_ctx, h);
return;
}
// Process received data.
tsi_result result = TSI_OK;
size_t consumed_slice_size = 0;
size_t i;
for (i = 0; i < h->args->read_buffer->count; i++) {
consumed_slice_size = GRPC_SLICE_LENGTH(h->args->read_buffer->slices[i]);
result = tsi_handshaker_process_bytes_from_peer(
h->handshaker, GRPC_SLICE_START_PTR(h->args->read_buffer->slices[i]),
&consumed_slice_size);
if (!tsi_handshaker_is_in_progress(h->handshaker)) break;
}
if (tsi_handshaker_is_in_progress(h->handshaker)) {
/* We may need more data. */
if (result == TSI_INCOMPLETE_DATA) {
grpc_endpoint_read(exec_ctx, h->args->endpoint, h->args->read_buffer,
&h->on_handshake_data_received_from_peer);
goto done;
} else {
error = send_handshake_bytes_to_peer_locked(exec_ctx, h);
if (error != GRPC_ERROR_NONE) {
security_handshake_failed_locked(exec_ctx, h, error);
gpr_mu_unlock(&h->mu);
security_handshaker_unref(exec_ctx, h);
return;
}
goto done;
}
}
if (result != TSI_OK) {
security_handshake_failed_locked(
exec_ctx, h, grpc_set_tsi_error_result(
GRPC_ERROR_CREATE("Handshake failed"), result));
gpr_mu_unlock(&h->mu);
security_handshaker_unref(exec_ctx, h);
return;
}
/* Handshake is done and successful this point. */
bool has_left_overs_in_current_slice =
(consumed_slice_size <
GRPC_SLICE_LENGTH(h->args->read_buffer->slices[i]));
size_t num_left_overs = (has_left_overs_in_current_slice ? 1 : 0) +
h->args->read_buffer->count - i - 1;
if (num_left_overs > 0) {
/* Put the leftovers in our buffer (ownership transfered). */
if (has_left_overs_in_current_slice) {
grpc_slice_buffer_add(
&h->left_overs,
grpc_slice_split_tail(&h->args->read_buffer->slices[i],
consumed_slice_size));
/* split_tail above increments refcount. */
grpc_slice_unref(h->args->read_buffer->slices[i]);
}
grpc_slice_buffer_addn(
&h->left_overs, &h->args->read_buffer->slices[i + 1],
num_left_overs - (size_t)has_left_overs_in_current_slice);
}
// Check peer.
error = check_peer_locked(exec_ctx, h);
if (error != GRPC_ERROR_NONE) {
security_handshake_failed_locked(exec_ctx, h, error);
gpr_mu_unlock(&h->mu);
security_handshaker_unref(exec_ctx, h);
return;
}
done:
gpr_mu_unlock(&h->mu);
}
static void on_handshake_data_received_from_peer(
void *setup, gpr_slice *slices, size_t nslices,
grpc_endpoint_cb_status error) {
grpc_secure_transport_setup *s = setup;
size_t consumed_slice_size = 0;
tsi_result result = TSI_OK;
size_t i;
size_t num_left_overs;
int has_left_overs_in_current_slice = 0;
if (error != GRPC_ENDPOINT_CB_OK) {
gpr_log(GPR_ERROR, "Read failed.");
cleanup_slices(slices, nslices);
secure_transport_setup_done(s, 0);
return;
}
for (i = 0; i < nslices; i++) {
consumed_slice_size = GPR_SLICE_LENGTH(slices[i]);
result = tsi_handshaker_process_bytes_from_peer(
s->handshaker, GPR_SLICE_START_PTR(slices[i]), &consumed_slice_size);
if (!tsi_handshaker_is_in_progress(s->handshaker)) break;
}
if (tsi_handshaker_is_in_progress(s->handshaker)) {
/* We may need more data. */
if (result == TSI_INCOMPLETE_DATA) {
/* TODO(klempner,jboeuf): This should probably use the client setup
deadline */
grpc_endpoint_notify_on_read(s->endpoint,
on_handshake_data_received_from_peer, setup);
cleanup_slices(slices, nslices);
return;
} else {
send_handshake_bytes_to_peer(s);
cleanup_slices(slices, nslices);
return;
}
}
if (result != TSI_OK) {
gpr_log(GPR_ERROR, "Handshake failed with error %s",
tsi_result_to_string(result));
cleanup_slices(slices, nslices);
secure_transport_setup_done(s, 0);
return;
}
/* Handshake is done and successful this point. */
has_left_overs_in_current_slice =
(consumed_slice_size < GPR_SLICE_LENGTH(slices[i]));
num_left_overs = (has_left_overs_in_current_slice ? 1 : 0) + nslices - i - 1;
if (num_left_overs == 0) {
cleanup_slices(slices, nslices);
check_peer(s);
return;
}
cleanup_slices(slices, nslices - num_left_overs);
/* Put the leftovers in our buffer (ownership transfered). */
if (has_left_overs_in_current_slice) {
gpr_slice_buffer_add(&s->left_overs,
gpr_slice_split_tail(&slices[i], consumed_slice_size));
gpr_slice_unref(slices[i]); /* split_tail above increments refcount. */
}
gpr_slice_buffer_addn(&s->left_overs, &slices[i + 1],
num_left_overs - has_left_overs_in_current_slice);
check_peer(s);
}