static grpc_error *add_socket_to_server(grpc_tcp_server *s, uv_tcp_t *handle,
const grpc_resolved_address *addr,
unsigned port_index,
grpc_tcp_listener **listener) {
grpc_tcp_listener *sp = NULL;
int port = -1;
int status;
grpc_error *error;
grpc_resolved_address sockname_temp;
// The last argument to uv_tcp_bind is flags
status = uv_tcp_bind(handle, (struct sockaddr *)addr->addr, 0);
if (status != 0) {
error = GRPC_ERROR_CREATE("Failed to bind to port");
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status));
return error;
}
status = uv_listen((uv_stream_t *)handle, SOMAXCONN, on_connect);
if (status != 0) {
error = GRPC_ERROR_CREATE("Failed to listen to port");
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status));
return error;
}
sockname_temp.len = (int)sizeof(struct sockaddr_storage);
status = uv_tcp_getsockname(handle, (struct sockaddr *)&sockname_temp.addr,
(int *)&sockname_temp.len);
if (status != 0) {
error = GRPC_ERROR_CREATE("getsockname failed");
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status));
return error;
}
port = grpc_sockaddr_get_port(&sockname_temp);
GPR_ASSERT(port >= 0);
GPR_ASSERT(!s->on_accept_cb && "must add ports before starting server");
sp = gpr_malloc(sizeof(grpc_tcp_listener));
sp->next = NULL;
if (s->head == NULL) {
s->head = sp;
} else {
s->tail->next = sp;
}
s->tail = sp;
sp->server = s;
sp->handle = handle;
sp->port = port;
sp->port_index = port_index;
handle->data = sp;
s->open_ports++;
GPR_ASSERT(sp->handle);
*listener = sp;
return GRPC_ERROR_NONE;
}
static void uv_tc_on_connect(uv_connect_t *req, int status) {
grpc_uv_tcp_connect *connect = req->data;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_error *error = GRPC_ERROR_NONE;
int done;
grpc_closure *closure = connect->closure;
grpc_timer_cancel(&exec_ctx, &connect->alarm);
if (status == 0) {
*connect->endpoint = grpc_tcp_create(
connect->tcp_handle, connect->resource_quota, connect->addr_name);
} else {
error = GRPC_ERROR_CREATE("Failed to connect to remote host");
error = grpc_error_set_int(error, GRPC_ERROR_INT_ERRNO, -status);
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status));
if (status == UV_ECANCELED) {
error = grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR,
"Timeout occurred");
// This should only happen if the handle is already closed
} else {
error = grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR,
uv_strerror(status));
uv_close((uv_handle_t *)connect->tcp_handle, tcp_close_callback);
}
}
done = (--connect->refs == 0);
if (done) {
uv_tcp_connect_cleanup(&exec_ctx, connect);
}
grpc_closure_sched(&exec_ctx, closure, error);
grpc_exec_ctx_finish(&exec_ctx);
}
/* Takes ownership of creds_path if not NULL. */
static grpc_error *create_default_creds_from_path(
grpc_exec_ctx *exec_ctx, char *creds_path, grpc_call_credentials **creds) {
grpc_json *json = NULL;
grpc_auth_json_key key;
grpc_auth_refresh_token token;
grpc_call_credentials *result = NULL;
grpc_slice creds_data = grpc_empty_slice();
grpc_error *error = GRPC_ERROR_NONE;
if (creds_path == NULL) {
error = GRPC_ERROR_CREATE_FROM_STATIC_STRING("creds_path unset");
goto end;
}
error = grpc_load_file(creds_path, 0, &creds_data);
if (error != GRPC_ERROR_NONE) {
goto end;
}
json = grpc_json_parse_string_with_len(
(char *)GRPC_SLICE_START_PTR(creds_data), GRPC_SLICE_LENGTH(creds_data));
if (json == NULL) {
error = grpc_error_set_str(
GRPC_ERROR_CREATE_FROM_STATIC_STRING("Failed to parse JSON"),
GRPC_ERROR_STR_RAW_BYTES, grpc_slice_ref_internal(creds_data));
goto end;
}
/* First, try an auth json key. */
key = grpc_auth_json_key_create_from_json(json);
if (grpc_auth_json_key_is_valid(&key)) {
result =
grpc_service_account_jwt_access_credentials_create_from_auth_json_key(
exec_ctx, key, grpc_max_auth_token_lifetime());
if (result == NULL) {
error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
"grpc_service_account_jwt_access_credentials_create_from_auth_json_"
"key failed");
}
goto end;
}
/* Then try a refresh token if the auth json key was invalid. */
token = grpc_auth_refresh_token_create_from_json(json);
if (grpc_auth_refresh_token_is_valid(&token)) {
result =
grpc_refresh_token_credentials_create_from_auth_refresh_token(token);
if (result == NULL) {
error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
"grpc_refresh_token_credentials_create_from_auth_refresh_token "
"failed");
}
goto end;
}
end:
GPR_ASSERT((result == NULL) + (error == GRPC_ERROR_NONE) == 1);
if (creds_path != NULL) gpr_free(creds_path);
grpc_slice_unref_internal(exec_ctx, creds_data);
if (json != NULL) grpc_json_destroy(json);
*creds = result;
return error;
}
static grpc_error *handle_addrinfo_result(int status, struct addrinfo *result,
grpc_resolved_addresses **addresses) {
struct addrinfo *resp;
size_t i;
if (status != 0) {
grpc_error *error;
*addresses = NULL;
error = GRPC_ERROR_CREATE("getaddrinfo failed");
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status));
return error;
}
(*addresses) = gpr_malloc(sizeof(grpc_resolved_addresses));
(*addresses)->naddrs = 0;
for (resp = result; resp != NULL; resp = resp->ai_next) {
(*addresses)->naddrs++;
}
(*addresses)->addrs =
gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs);
i = 0;
for (resp = result; resp != NULL; resp = resp->ai_next) {
memcpy(&(*addresses)->addrs[i].addr, resp->ai_addr, resp->ai_addrlen);
(*addresses)->addrs[i].len = resp->ai_addrlen;
i++;
}
{
for (i = 0; i < (*addresses)->naddrs; i++) {
char *buf;
grpc_sockaddr_to_string(&buf, &(*addresses)->addrs[i], 0);
gpr_free(buf);
}
}
return GRPC_ERROR_NONE;
}
static grpc_error *error_for_fd(int fd, const grpc_resolved_address *addr) {
if (fd >= 0) return GRPC_ERROR_NONE;
char *addr_str;
grpc_sockaddr_to_string(&addr_str, addr, 0);
grpc_error *err = grpc_error_set_str(GRPC_OS_ERROR(errno, "socket"),
GRPC_ERROR_STR_TARGET_ADDRESS,
grpc_slice_from_copied_string(addr_str));
gpr_free(addr_str);
return err;
}
static void resolve_address_impl(grpc_exec_ctx *exec_ctx, const char *name,
const char *default_port,
grpc_pollset_set *interested_parties,
grpc_closure *on_done,
grpc_resolved_addresses **addrs) {
uv_getaddrinfo_t *req;
request *r;
struct addrinfo *hints;
char *host;
char *port;
grpc_error *err;
int s;
err = try_split_host_port(name, default_port, &host, &port);
if (err != GRPC_ERROR_NONE) {
grpc_closure_sched(exec_ctx, on_done, err);
return;
}
r = gpr_malloc(sizeof(request));
r->on_done = on_done;
r->addresses = addrs;
r->host = host;
r->port = port;
req = gpr_malloc(sizeof(uv_getaddrinfo_t));
req->data = r;
/* Call getaddrinfo */
hints = gpr_malloc(sizeof(struct addrinfo));
memset(hints, 0, sizeof(struct addrinfo));
hints->ai_family = AF_UNSPEC; /* ipv4 or ipv6 */
hints->ai_socktype = SOCK_STREAM; /* stream socket */
hints->ai_flags = AI_PASSIVE; /* for wildcard IP address */
r->hints = hints;
s = uv_getaddrinfo(uv_default_loop(), req, getaddrinfo_callback, host, port,
hints);
if (s != 0) {
*addrs = NULL;
err = GRPC_ERROR_CREATE_FROM_STATIC_STRING("getaddrinfo failed");
err = grpc_error_set_str(err, GRPC_ERROR_STR_OS_ERROR,
grpc_slice_from_static_string(uv_strerror(s)));
grpc_closure_sched(exec_ctx, on_done, err);
gpr_free(r);
gpr_free(req);
gpr_free(hints);
gpr_free(host);
gpr_free(port);
}
}
grpc_error *grpc_load_file(const char *filename, int add_null_terminator,
grpc_slice *output) {
unsigned char *contents = NULL;
size_t contents_size = 0;
grpc_slice result = grpc_empty_slice();
FILE *file;
size_t bytes_read = 0;
grpc_error *error = GRPC_ERROR_NONE;
GRPC_SCHEDULING_START_BLOCKING_REGION;
file = fopen(filename, "rb");
if (file == NULL) {
error = GRPC_OS_ERROR(errno, "fopen");
goto end;
}
fseek(file, 0, SEEK_END);
/* Converting to size_t on the assumption that it will not fail */
contents_size = (size_t)ftell(file);
fseek(file, 0, SEEK_SET);
contents = (unsigned char *)gpr_malloc(contents_size +
(add_null_terminator ? 1 : 0));
bytes_read = fread(contents, 1, contents_size, file);
if (bytes_read < contents_size) {
error = GRPC_OS_ERROR(errno, "fread");
GPR_ASSERT(ferror(file));
goto end;
}
if (add_null_terminator) {
contents[contents_size++] = 0;
}
result = grpc_slice_new(contents, contents_size, gpr_free);
end:
*output = result;
if (file != NULL) fclose(file);
if (error != GRPC_ERROR_NONE) {
grpc_error *error_out =
grpc_error_set_str(GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
"Failed to load file", &error, 1),
GRPC_ERROR_STR_FILENAME,
grpc_slice_from_copied_string(
filename)); // TODO(ncteisen), always static?
GRPC_ERROR_UNREF(error);
error = error_out;
}
GRPC_SCHEDULING_END_BLOCKING_REGION;
return error;
}
static grpc_error *conforms_to(grpc_slice slice, const uint8_t *legal_bits,
const char *err_desc) {
const uint8_t *p = GRPC_SLICE_START_PTR(slice);
const uint8_t *e = GRPC_SLICE_END_PTR(slice);
for (; p != e; p++) {
int idx = *p;
int byte = idx / 8;
int bit = idx % 8;
if ((legal_bits[byte] & (1 << bit)) == 0) {
char *dump = grpc_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
grpc_error *error = grpc_error_set_str(
grpc_error_set_int(GRPC_ERROR_CREATE_FROM_COPIED_STRING(err_desc),
GRPC_ERROR_INT_OFFSET,
p - GRPC_SLICE_START_PTR(slice)),
GRPC_ERROR_STR_RAW_BYTES, grpc_slice_from_copied_string(dump));
gpr_free(dump);
return error;
}
}
return GRPC_ERROR_NONE;
}
static void uv_endpoint_read(grpc_exec_ctx *exec_ctx, grpc_endpoint *ep,
grpc_slice_buffer *read_slices, grpc_closure *cb) {
grpc_tcp *tcp = (grpc_tcp *)ep;
int status;
grpc_error *error = GRPC_ERROR_NONE;
GPR_ASSERT(tcp->read_cb == NULL);
tcp->read_cb = cb;
tcp->read_slices = read_slices;
grpc_slice_buffer_reset_and_unref_internal(exec_ctx, read_slices);
TCP_REF(tcp, "read");
// TODO(murgatroid99): figure out what the return value here means
status =
uv_read_start((uv_stream_t *)tcp->handle, alloc_uv_buf, read_callback);
if (status != 0) {
error = GRPC_ERROR_CREATE("TCP Read failed at start");
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR, uv_strerror(status));
grpc_closure_sched(exec_ctx, cb, error);
}
if (grpc_tcp_trace) {
const char *str = grpc_error_string(error);
gpr_log(GPR_DEBUG, "Initiating read on %p: error=%s", tcp, str);
}
}
static grpc_error *parse_inner(grpc_exec_ctx *exec_ctx,
grpc_chttp2_data_parser *p,
grpc_chttp2_transport *t, grpc_chttp2_stream *s,
gpr_slice slice) {
uint8_t *const beg = GPR_SLICE_START_PTR(slice);
uint8_t *const end = GPR_SLICE_END_PTR(slice);
uint8_t *cur = beg;
uint32_t message_flags;
grpc_chttp2_incoming_byte_stream *incoming_byte_stream;
char *msg;
if (cur == end) {
return GRPC_ERROR_NONE;
}
switch (p->state) {
case GRPC_CHTTP2_DATA_ERROR:
p->state = GRPC_CHTTP2_DATA_ERROR;
return GRPC_ERROR_REF(p->error);
fh_0:
case GRPC_CHTTP2_DATA_FH_0:
s->stats.incoming.framing_bytes++;
p->frame_type = *cur;
switch (p->frame_type) {
case 0:
p->is_frame_compressed = 0; /* GPR_FALSE */
break;
case 1:
p->is_frame_compressed = 1; /* GPR_TRUE */
break;
default:
gpr_asprintf(&msg, "Bad GRPC frame type 0x%02x", p->frame_type);
p->error = GRPC_ERROR_CREATE(msg);
p->error = grpc_error_set_int(p->error, GRPC_ERROR_INT_STREAM_ID,
(intptr_t)s->id);
gpr_free(msg);
msg = gpr_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
p->error =
grpc_error_set_str(p->error, GRPC_ERROR_STR_RAW_BYTES, msg);
gpr_free(msg);
p->error =
grpc_error_set_int(p->error, GRPC_ERROR_INT_OFFSET, cur - beg);
p->state = GRPC_CHTTP2_DATA_ERROR;
return GRPC_ERROR_REF(p->error);
}
if (++cur == end) {
p->state = GRPC_CHTTP2_DATA_FH_1;
return GRPC_ERROR_NONE;
}
/* fallthrough */
case GRPC_CHTTP2_DATA_FH_1:
s->stats.incoming.framing_bytes++;
p->frame_size = ((uint32_t)*cur) << 24;
if (++cur == end) {
p->state = GRPC_CHTTP2_DATA_FH_2;
return GRPC_ERROR_NONE;
}
/* fallthrough */
case GRPC_CHTTP2_DATA_FH_2:
s->stats.incoming.framing_bytes++;
p->frame_size |= ((uint32_t)*cur) << 16;
if (++cur == end) {
p->state = GRPC_CHTTP2_DATA_FH_3;
return GRPC_ERROR_NONE;
}
/* fallthrough */
case GRPC_CHTTP2_DATA_FH_3:
s->stats.incoming.framing_bytes++;
p->frame_size |= ((uint32_t)*cur) << 8;
if (++cur == end) {
p->state = GRPC_CHTTP2_DATA_FH_4;
return GRPC_ERROR_NONE;
}
/* fallthrough */
case GRPC_CHTTP2_DATA_FH_4:
s->stats.incoming.framing_bytes++;
p->frame_size |= ((uint32_t)*cur);
p->state = GRPC_CHTTP2_DATA_FRAME;
++cur;
message_flags = 0;
if (p->is_frame_compressed) {
message_flags |= GRPC_WRITE_INTERNAL_COMPRESS;
}
p->parsing_frame = incoming_byte_stream =
grpc_chttp2_incoming_byte_stream_create(exec_ctx, t, s, p->frame_size,
message_flags);
/* fallthrough */
case GRPC_CHTTP2_DATA_FRAME:
if (cur == end) {
return GRPC_ERROR_NONE;
}
uint32_t remaining = (uint32_t)(end - cur);
if (remaining == p->frame_size) {
s->stats.incoming.data_bytes += p->frame_size;
grpc_chttp2_incoming_byte_stream_push(
exec_ctx, p->parsing_frame,
gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame,
GRPC_ERROR_NONE);
p->parsing_frame = NULL;
p->state = GRPC_CHTTP2_DATA_FH_0;
return GRPC_ERROR_NONE;
} else if (remaining > p->frame_size) {
s->stats.incoming.data_bytes += p->frame_size;
grpc_chttp2_incoming_byte_stream_push(
exec_ctx, p->parsing_frame,
gpr_slice_sub(slice, (size_t)(cur - beg),
(size_t)(cur + p->frame_size - beg)));
grpc_chttp2_incoming_byte_stream_finished(exec_ctx, p->parsing_frame,
GRPC_ERROR_NONE);
p->parsing_frame = NULL;
cur += p->frame_size;
goto fh_0; /* loop */
} else {
GPR_ASSERT(remaining <= p->frame_size);
grpc_chttp2_incoming_byte_stream_push(
exec_ctx, p->parsing_frame,
gpr_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
p->frame_size -= remaining;
s->stats.incoming.data_bytes += remaining;
return GRPC_ERROR_NONE;
}
}
GPR_UNREACHABLE_CODE(return GRPC_ERROR_CREATE("Should never reach here"));
}
grpc_error *grpc_tcp_server_add_port(grpc_tcp_server *s,
const grpc_resolved_address *addr,
int *port) {
// This function is mostly copied from tcp_server_windows.c
grpc_tcp_listener *sp = NULL;
uv_tcp_t *handle;
grpc_resolved_address addr6_v4mapped;
grpc_resolved_address wildcard;
grpc_resolved_address *allocated_addr = NULL;
grpc_resolved_address sockname_temp;
unsigned port_index = 0;
int status;
grpc_error *error = GRPC_ERROR_NONE;
if (s->tail != NULL) {
port_index = s->tail->port_index + 1;
}
/* Check if this is a wildcard port, and if so, try to keep the port the same
as some previously created listener. */
if (grpc_sockaddr_get_port(addr) == 0) {
for (sp = s->head; sp; sp = sp->next) {
sockname_temp.len = sizeof(struct sockaddr_storage);
if (0 == uv_tcp_getsockname(sp->handle,
(struct sockaddr *)&sockname_temp.addr,
(int *)&sockname_temp.len)) {
*port = grpc_sockaddr_get_port(&sockname_temp);
if (*port > 0) {
allocated_addr = gpr_malloc(sizeof(grpc_resolved_address));
memcpy(allocated_addr, addr, sizeof(grpc_resolved_address));
grpc_sockaddr_set_port(allocated_addr, *port);
addr = allocated_addr;
break;
}
}
}
}
if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
addr = &addr6_v4mapped;
}
/* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */
if (grpc_sockaddr_is_wildcard(addr, port)) {
grpc_sockaddr_make_wildcard6(*port, &wildcard);
addr = &wildcard;
}
handle = gpr_malloc(sizeof(uv_tcp_t));
status = uv_tcp_init(uv_default_loop(), handle);
if (status == 0) {
error = add_socket_to_server(s, handle, addr, port_index, &sp);
} else {
error = GRPC_ERROR_CREATE_FROM_STATIC_STRING(
"Failed to initialize UV tcp handle");
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR,
grpc_slice_from_static_string(uv_strerror(status)));
}
gpr_free(allocated_addr);
if (error != GRPC_ERROR_NONE) {
grpc_error *error_out = GRPC_ERROR_CREATE_REFERENCING_FROM_STATIC_STRING(
"Failed to add port to server", &error, 1);
GRPC_ERROR_UNREF(error);
error = error_out;
*port = -1;
} else {
GPR_ASSERT(sp != NULL);
*port = sp->port;
}
return error;
}
static grpc_error *tcp_annotate_error(grpc_error *src_error, grpc_tcp *tcp) {
return grpc_error_set_str(
grpc_error_set_int(src_error, GRPC_ERROR_INT_FD, tcp->fd),
GRPC_ERROR_STR_TARGET_ADDRESS, tcp->peer_string);
}
grpc_error *grpc_tcp_server_add_port(grpc_tcp_server *s, const void *addr,
size_t addr_len, int *out_port) {
grpc_tcp_listener *sp;
grpc_tcp_listener *sp2 = NULL;
int fd;
grpc_dualstack_mode dsmode;
struct sockaddr_in6 addr6_v4mapped;
struct sockaddr_in wild4;
struct sockaddr_in6 wild6;
struct sockaddr_in addr4_copy;
struct sockaddr *allocated_addr = NULL;
struct sockaddr_storage sockname_temp;
socklen_t sockname_len;
int port;
unsigned port_index = 0;
unsigned fd_index = 0;
grpc_error *errs[2] = {GRPC_ERROR_NONE, GRPC_ERROR_NONE};
if (s->tail != NULL) {
port_index = s->tail->port_index + 1;
}
grpc_unlink_if_unix_domain_socket((struct sockaddr *)addr);
/* Check if this is a wildcard port, and if so, try to keep the port the same
as some previously created listener. */
if (grpc_sockaddr_get_port(addr) == 0) {
for (sp = s->head; sp; sp = sp->next) {
sockname_len = sizeof(sockname_temp);
if (0 == getsockname(sp->fd, (struct sockaddr *)&sockname_temp,
&sockname_len)) {
port = grpc_sockaddr_get_port((struct sockaddr *)&sockname_temp);
if (port > 0) {
allocated_addr = gpr_malloc(addr_len);
memcpy(allocated_addr, addr, addr_len);
grpc_sockaddr_set_port(allocated_addr, port);
addr = allocated_addr;
break;
}
}
}
}
sp = NULL;
if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
addr = (const struct sockaddr *)&addr6_v4mapped;
addr_len = sizeof(addr6_v4mapped);
}
/* Treat :: or 0.0.0.0 as a family-agnostic wildcard. */
if (grpc_sockaddr_is_wildcard(addr, &port)) {
grpc_sockaddr_make_wildcards(port, &wild4, &wild6);
/* Try listening on IPv6 first. */
addr = (struct sockaddr *)&wild6;
addr_len = sizeof(wild6);
errs[0] = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode, &fd);
if (errs[0] == GRPC_ERROR_NONE) {
errs[0] = add_socket_to_server(s, fd, addr, addr_len, port_index,
fd_index, &sp);
if (fd >= 0 && dsmode == GRPC_DSMODE_DUALSTACK) {
goto done;
}
if (sp != NULL) {
++fd_index;
}
/* If we didn't get a dualstack socket, also listen on 0.0.0.0. */
if (port == 0 && sp != NULL) {
grpc_sockaddr_set_port((struct sockaddr *)&wild4, sp->port);
}
}
addr = (struct sockaddr *)&wild4;
addr_len = sizeof(wild4);
}
errs[1] = grpc_create_dualstack_socket(addr, SOCK_STREAM, 0, &dsmode, &fd);
if (errs[1] == GRPC_ERROR_NONE) {
if (dsmode == GRPC_DSMODE_IPV4 &&
grpc_sockaddr_is_v4mapped(addr, &addr4_copy)) {
addr = (struct sockaddr *)&addr4_copy;
addr_len = sizeof(addr4_copy);
}
sp2 = sp;
errs[1] =
add_socket_to_server(s, fd, addr, addr_len, port_index, fd_index, &sp);
if (sp2 != NULL && sp != NULL) {
sp2->sibling = sp;
sp->is_sibling = 1;
}
}
done:
gpr_free(allocated_addr);
if (sp != NULL) {
*out_port = sp->port;
GRPC_ERROR_UNREF(errs[0]);
GRPC_ERROR_UNREF(errs[1]);
return GRPC_ERROR_NONE;
} else {
*out_port = -1;
char *addr_str = grpc_sockaddr_to_uri(addr);
grpc_error *err = grpc_error_set_str(
GRPC_ERROR_CREATE_REFERENCING("Failed to add port to server", errs,
GPR_ARRAY_SIZE(errs)),
GRPC_ERROR_STR_TARGET_ADDRESS, addr_str);
GRPC_ERROR_UNREF(errs[0]);
GRPC_ERROR_UNREF(errs[1]);
gpr_free(addr_str);
return err;
}
}
static void on_writable(grpc_exec_ctx *exec_ctx, void *acp, grpc_error *error) {
async_connect *ac = acp;
int so_error = 0;
socklen_t so_error_size;
int err;
int done;
grpc_endpoint **ep = ac->ep;
grpc_closure *closure = ac->closure;
grpc_fd *fd;
GRPC_ERROR_REF(error);
if (grpc_tcp_trace) {
const char *str = grpc_error_string(error);
gpr_log(GPR_DEBUG, "CLIENT_CONNECT: %s: on_writable: error=%s",
ac->addr_str, str);
}
gpr_mu_lock(&ac->mu);
GPR_ASSERT(ac->fd);
fd = ac->fd;
ac->fd = NULL;
gpr_mu_unlock(&ac->mu);
grpc_timer_cancel(exec_ctx, &ac->alarm);
gpr_mu_lock(&ac->mu);
if (error != GRPC_ERROR_NONE) {
error =
grpc_error_set_str(error, GRPC_ERROR_STR_OS_ERROR,
grpc_slice_from_static_string("Timeout occurred"));
goto finish;
}
do {
so_error_size = sizeof(so_error);
err = getsockopt(grpc_fd_wrapped_fd(fd), SOL_SOCKET, SO_ERROR, &so_error,
&so_error_size);
} while (err < 0 && errno == EINTR);
if (err < 0) {
error = GRPC_OS_ERROR(errno, "getsockopt");
goto finish;
}
switch (so_error) {
case 0:
grpc_pollset_set_del_fd(exec_ctx, ac->interested_parties, fd);
*ep = grpc_tcp_client_create_from_fd(exec_ctx, fd, ac->channel_args,
ac->addr_str);
fd = NULL;
break;
case ENOBUFS:
/* We will get one of these errors if we have run out of
memory in the kernel for the data structures allocated
when you connect a socket. If this happens it is very
likely that if we wait a little bit then try again the
connection will work (since other programs or this
program will close their network connections and free up
memory). This does _not_ indicate that there is anything
wrong with the server we are connecting to, this is a
local problem.
If you are looking at this code, then chances are that
your program or another program on the same computer
opened too many network connections. The "easy" fix:
don't do that! */
gpr_log(GPR_ERROR, "kernel out of buffers");
gpr_mu_unlock(&ac->mu);
grpc_fd_notify_on_write(exec_ctx, fd, &ac->write_closure);
return;
case ECONNREFUSED:
/* This error shouldn't happen for anything other than connect(). */
error = GRPC_OS_ERROR(so_error, "connect");
break;
default:
/* We don't really know which syscall triggered the problem here,
so punt by reporting getsockopt(). */
error = GRPC_OS_ERROR(so_error, "getsockopt(SO_ERROR)");
break;
}
finish:
if (fd != NULL) {
grpc_pollset_set_del_fd(exec_ctx, ac->interested_parties, fd);
grpc_fd_orphan(exec_ctx, fd, NULL, NULL, "tcp_client_orphan");
fd = NULL;
}
done = (--ac->refs == 0);
gpr_mu_unlock(&ac->mu);
if (error != GRPC_ERROR_NONE) {
char *error_descr;
grpc_slice str;
bool ret = grpc_error_get_str(error, GRPC_ERROR_STR_DESCRIPTION, &str);
GPR_ASSERT(ret);
char *desc = grpc_slice_to_c_string(str);
gpr_asprintf(&error_descr, "Failed to connect to remote host: %s", desc);
error = grpc_error_set_str(error, GRPC_ERROR_STR_DESCRIPTION,
grpc_slice_from_copied_string(error_descr));
gpr_free(error_descr);
gpr_free(desc);
error = grpc_error_set_str(error, GRPC_ERROR_STR_TARGET_ADDRESS,
grpc_slice_from_copied_string(ac->addr_str));
}
if (done) {
gpr_mu_destroy(&ac->mu);
gpr_free(ac->addr_str);
grpc_channel_args_destroy(exec_ctx, ac->channel_args);
gpr_free(ac);
}
grpc_closure_sched(exec_ctx, closure, error);
}
static grpc_error *blocking_resolve_address_impl(
const char *name, const char *default_port,
grpc_resolved_addresses **addresses) {
struct addrinfo hints;
struct addrinfo *result = NULL, *resp;
char *host;
char *port;
int s;
size_t i;
grpc_error *err;
if (name[0] == 'u' && name[1] == 'n' && name[2] == 'i' && name[3] == 'x' &&
name[4] == ':' && name[5] != 0) {
return grpc_resolve_unix_domain_address(name + 5, addresses);
}
/* parse name, splitting it into host and port parts */
gpr_split_host_port(name, &host, &port);
if (host == NULL) {
err = grpc_error_set_str(GRPC_ERROR_CREATE("unparseable host:port"),
GRPC_ERROR_STR_TARGET_ADDRESS, name);
goto done;
}
if (port == NULL) {
if (default_port == NULL) {
err = grpc_error_set_str(GRPC_ERROR_CREATE("no port in name"),
GRPC_ERROR_STR_TARGET_ADDRESS, name);
goto done;
}
port = gpr_strdup(default_port);
}
/* Call getaddrinfo */
memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC; /* ipv4 or ipv6 */
hints.ai_socktype = SOCK_STREAM; /* stream socket */
hints.ai_flags = AI_PASSIVE; /* for wildcard IP address */
GRPC_SCHEDULING_START_BLOCKING_REGION;
s = getaddrinfo(host, port, &hints, &result);
GRPC_SCHEDULING_END_BLOCKING_REGION;
if (s != 0) {
/* Retry if well-known service name is recognized */
char *svc[][2] = {{"http", "80"}, {"https", "443"}};
for (i = 0; i < GPR_ARRAY_SIZE(svc); i++) {
if (strcmp(port, svc[i][0]) == 0) {
GRPC_SCHEDULING_START_BLOCKING_REGION;
s = getaddrinfo(host, svc[i][1], &hints, &result);
GRPC_SCHEDULING_END_BLOCKING_REGION;
break;
}
}
}
if (s != 0) {
err = grpc_error_set_str(
grpc_error_set_str(
grpc_error_set_str(grpc_error_set_int(GRPC_ERROR_CREATE("OS Error"),
GRPC_ERROR_INT_ERRNO, s),
GRPC_ERROR_STR_OS_ERROR, gai_strerror(s)),
GRPC_ERROR_STR_SYSCALL, "getaddrinfo"),
GRPC_ERROR_STR_TARGET_ADDRESS, name);
goto done;
}
/* Success path: set addrs non-NULL, fill it in */
*addresses = gpr_malloc(sizeof(grpc_resolved_addresses));
(*addresses)->naddrs = 0;
for (resp = result; resp != NULL; resp = resp->ai_next) {
(*addresses)->naddrs++;
}
(*addresses)->addrs =
gpr_malloc(sizeof(grpc_resolved_address) * (*addresses)->naddrs);
i = 0;
for (resp = result; resp != NULL; resp = resp->ai_next) {
memcpy(&(*addresses)->addrs[i].addr, resp->ai_addr, resp->ai_addrlen);
(*addresses)->addrs[i].len = resp->ai_addrlen;
i++;
}
err = GRPC_ERROR_NONE;
done:
gpr_free(host);
gpr_free(port);
if (result) {
freeaddrinfo(result);
}
return err;
}
/* Tries to issue one async connection, then schedules both an IOCP
notification request for the connection, and one timeout alert. */
void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *on_done,
grpc_endpoint **endpoint,
grpc_pollset_set *interested_parties,
const grpc_channel_args *channel_args,
const grpc_resolved_address *addr,
gpr_timespec deadline) {
SOCKET sock = INVALID_SOCKET;
BOOL success;
int status;
grpc_resolved_address addr6_v4mapped;
grpc_resolved_address local_address;
async_connect *ac;
grpc_winsocket *socket = NULL;
LPFN_CONNECTEX ConnectEx;
GUID guid = WSAID_CONNECTEX;
DWORD ioctl_num_bytes;
grpc_winsocket_callback_info *info;
grpc_error *error = GRPC_ERROR_NONE;
grpc_resource_quota *resource_quota = grpc_resource_quota_create(NULL);
if (channel_args != NULL) {
for (size_t i = 0; i < channel_args->num_args; i++) {
if (0 == strcmp(channel_args->args[i].key, GRPC_ARG_RESOURCE_QUOTA)) {
grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
resource_quota = grpc_resource_quota_internal_ref(
channel_args->args[i].value.pointer.p);
}
}
}
*endpoint = NULL;
/* Use dualstack sockets where available. */
if (grpc_sockaddr_to_v4mapped(addr, &addr6_v4mapped)) {
addr = &addr6_v4mapped;
}
sock = WSASocket(AF_INET6, SOCK_STREAM, IPPROTO_TCP, NULL, 0,
WSA_FLAG_OVERLAPPED);
if (sock == INVALID_SOCKET) {
error = GRPC_WSA_ERROR(WSAGetLastError(), "WSASocket");
goto failure;
}
error = grpc_tcp_prepare_socket(sock);
if (error != GRPC_ERROR_NONE) {
goto failure;
}
/* Grab the function pointer for ConnectEx for that specific socket.
It may change depending on the interface. */
status =
WSAIoctl(sock, SIO_GET_EXTENSION_FUNCTION_POINTER, &guid, sizeof(guid),
&ConnectEx, sizeof(ConnectEx), &ioctl_num_bytes, NULL, NULL);
if (status != 0) {
error = GRPC_WSA_ERROR(WSAGetLastError(),
"WSAIoctl(SIO_GET_EXTENSION_FUNCTION_POINTER)");
goto failure;
}
grpc_sockaddr_make_wildcard6(0, &local_address);
status = bind(sock, (struct sockaddr *)&local_address.addr,
(int)local_address.len);
if (status != 0) {
error = GRPC_WSA_ERROR(WSAGetLastError(), "bind");
goto failure;
}
socket = grpc_winsocket_create(sock, "client");
info = &socket->write_info;
success = ConnectEx(sock, (struct sockaddr *)&addr->addr, (int)addr->len,
NULL, 0, NULL, &info->overlapped);
/* It wouldn't be unusual to get a success immediately. But we'll still get
an IOCP notification, so let's ignore it. */
if (!success) {
int last_error = WSAGetLastError();
if (last_error != ERROR_IO_PENDING) {
error = GRPC_WSA_ERROR(last_error, "ConnectEx");
goto failure;
}
}
ac = gpr_malloc(sizeof(async_connect));
ac->on_done = on_done;
ac->socket = socket;
gpr_mu_init(&ac->mu);
ac->refs = 2;
ac->addr_name = grpc_sockaddr_to_uri(addr);
ac->endpoint = endpoint;
ac->resource_quota = resource_quota;
grpc_closure_init(&ac->on_connect, on_connect, ac);
grpc_timer_init(exec_ctx, &ac->alarm, deadline, on_alarm, ac,
gpr_now(GPR_CLOCK_MONOTONIC));
grpc_socket_notify_on_write(exec_ctx, socket, &ac->on_connect);
return;
failure:
GPR_ASSERT(error != GRPC_ERROR_NONE);
char *target_uri = grpc_sockaddr_to_uri(addr);
grpc_error *final_error = grpc_error_set_str(
GRPC_ERROR_CREATE_REFERENCING("Failed to connect", &error, 1),
GRPC_ERROR_STR_TARGET_ADDRESS, target_uri);
GRPC_ERROR_UNREF(error);
if (socket != NULL) {
grpc_winsocket_destroy(socket);
} else if (sock != INVALID_SOCKET) {
closesocket(sock);
}
grpc_resource_quota_internal_unref(exec_ctx, resource_quota);
grpc_exec_ctx_sched(exec_ctx, on_done, final_error, NULL);
}
grpc_error *grpc_deframe_unprocessed_incoming_frames(
grpc_exec_ctx *exec_ctx, grpc_chttp2_data_parser *p, grpc_chttp2_stream *s,
grpc_slice_buffer *slices, grpc_slice *slice_out,
grpc_byte_stream **stream_out) {
grpc_error *error = GRPC_ERROR_NONE;
grpc_chttp2_transport *t = s->t;
while (slices->count > 0) {
uint8_t *beg = NULL;
uint8_t *end = NULL;
uint8_t *cur = NULL;
grpc_slice slice = grpc_slice_buffer_take_first(slices);
beg = GRPC_SLICE_START_PTR(slice);
end = GRPC_SLICE_END_PTR(slice);
cur = beg;
uint32_t message_flags;
char *msg;
if (cur == end) {
grpc_slice_unref_internal(exec_ctx, slice);
continue;
}
switch (p->state) {
case GRPC_CHTTP2_DATA_ERROR:
p->state = GRPC_CHTTP2_DATA_ERROR;
grpc_slice_unref_internal(exec_ctx, slice);
return GRPC_ERROR_REF(p->error);
case GRPC_CHTTP2_DATA_FH_0:
p->frame_type = *cur;
switch (p->frame_type) {
case 0:
p->is_frame_compressed = false; /* GPR_FALSE */
break;
case 1:
p->is_frame_compressed = true; /* GPR_TRUE */
break;
default:
gpr_asprintf(&msg, "Bad GRPC frame type 0x%02x", p->frame_type);
p->error = GRPC_ERROR_CREATE_FROM_COPIED_STRING(msg);
p->error = grpc_error_set_int(p->error, GRPC_ERROR_INT_STREAM_ID,
(intptr_t)s->id);
gpr_free(msg);
msg = grpc_dump_slice(slice, GPR_DUMP_HEX | GPR_DUMP_ASCII);
p->error = grpc_error_set_str(p->error, GRPC_ERROR_STR_RAW_BYTES,
grpc_slice_from_copied_string(msg));
gpr_free(msg);
p->error =
grpc_error_set_int(p->error, GRPC_ERROR_INT_OFFSET, cur - beg);
p->state = GRPC_CHTTP2_DATA_ERROR;
grpc_slice_unref_internal(exec_ctx, slice);
return GRPC_ERROR_REF(p->error);
}
if (++cur == end) {
p->state = GRPC_CHTTP2_DATA_FH_1;
grpc_slice_unref_internal(exec_ctx, slice);
continue;
}
/* fallthrough */
case GRPC_CHTTP2_DATA_FH_1:
p->frame_size = ((uint32_t)*cur) << 24;
if (++cur == end) {
p->state = GRPC_CHTTP2_DATA_FH_2;
grpc_slice_unref_internal(exec_ctx, slice);
continue;
}
/* fallthrough */
case GRPC_CHTTP2_DATA_FH_2:
p->frame_size |= ((uint32_t)*cur) << 16;
if (++cur == end) {
p->state = GRPC_CHTTP2_DATA_FH_3;
grpc_slice_unref_internal(exec_ctx, slice);
continue;
}
/* fallthrough */
case GRPC_CHTTP2_DATA_FH_3:
p->frame_size |= ((uint32_t)*cur) << 8;
if (++cur == end) {
p->state = GRPC_CHTTP2_DATA_FH_4;
grpc_slice_unref_internal(exec_ctx, slice);
continue;
}
/* fallthrough */
case GRPC_CHTTP2_DATA_FH_4:
GPR_ASSERT(stream_out != NULL);
GPR_ASSERT(p->parsing_frame == NULL);
p->frame_size |= ((uint32_t)*cur);
p->state = GRPC_CHTTP2_DATA_FRAME;
++cur;
message_flags = 0;
if (p->is_frame_compressed) {
message_flags |= GRPC_WRITE_INTERNAL_COMPRESS;
}
p->parsing_frame = grpc_chttp2_incoming_byte_stream_create(
exec_ctx, t, s, p->frame_size, message_flags);
*stream_out = &p->parsing_frame->base;
if (p->parsing_frame->remaining_bytes == 0) {
GRPC_ERROR_UNREF(grpc_chttp2_incoming_byte_stream_finished(
exec_ctx, p->parsing_frame, GRPC_ERROR_NONE, true));
p->parsing_frame = NULL;
p->state = GRPC_CHTTP2_DATA_FH_0;
}
s->pending_byte_stream = true;
if (cur != end) {
grpc_slice_buffer_undo_take_first(
&s->unprocessed_incoming_frames_buffer,
grpc_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
}
grpc_slice_unref_internal(exec_ctx, slice);
return GRPC_ERROR_NONE;
case GRPC_CHTTP2_DATA_FRAME: {
GPR_ASSERT(p->parsing_frame != NULL);
GPR_ASSERT(slice_out != NULL);
if (cur == end) {
grpc_slice_unref_internal(exec_ctx, slice);
continue;
}
uint32_t remaining = (uint32_t)(end - cur);
if (remaining == p->frame_size) {
if (GRPC_ERROR_NONE != (error = grpc_chttp2_incoming_byte_stream_push(
exec_ctx, p->parsing_frame,
grpc_slice_sub(slice, (size_t)(cur - beg),
(size_t)(end - beg)),
slice_out))) {
grpc_slice_unref_internal(exec_ctx, slice);
return error;
}
if (GRPC_ERROR_NONE !=
(error = grpc_chttp2_incoming_byte_stream_finished(
exec_ctx, p->parsing_frame, GRPC_ERROR_NONE, true))) {
grpc_slice_unref_internal(exec_ctx, slice);
return error;
}
p->parsing_frame = NULL;
p->state = GRPC_CHTTP2_DATA_FH_0;
grpc_slice_unref_internal(exec_ctx, slice);
return GRPC_ERROR_NONE;
} else if (remaining < p->frame_size) {
if (GRPC_ERROR_NONE != (error = grpc_chttp2_incoming_byte_stream_push(
exec_ctx, p->parsing_frame,
grpc_slice_sub(slice, (size_t)(cur - beg),
(size_t)(end - beg)),
slice_out))) {
return error;
}
p->frame_size -= remaining;
grpc_slice_unref_internal(exec_ctx, slice);
return GRPC_ERROR_NONE;
} else {
GPR_ASSERT(remaining > p->frame_size);
if (GRPC_ERROR_NONE !=
(grpc_chttp2_incoming_byte_stream_push(
exec_ctx, p->parsing_frame,
grpc_slice_sub(slice, (size_t)(cur - beg),
(size_t)(cur + p->frame_size - beg)),
slice_out))) {
grpc_slice_unref_internal(exec_ctx, slice);
return error;
}
if (GRPC_ERROR_NONE !=
(error = grpc_chttp2_incoming_byte_stream_finished(
exec_ctx, p->parsing_frame, GRPC_ERROR_NONE, true))) {
grpc_slice_unref_internal(exec_ctx, slice);
return error;
}
p->parsing_frame = NULL;
p->state = GRPC_CHTTP2_DATA_FH_0;
cur += p->frame_size;
grpc_slice_buffer_undo_take_first(
&s->unprocessed_incoming_frames_buffer,
grpc_slice_sub(slice, (size_t)(cur - beg), (size_t)(end - beg)));
grpc_slice_unref_internal(exec_ctx, slice);
return GRPC_ERROR_NONE;
}
}
}
}
return GRPC_ERROR_NONE;
}
