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/*
*
* Copyright 2015-2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <string.h>
#include <grpc/grpc.h>
#include <grpc/support/alloc.h>
#include <grpc/support/host_port.h>
#include <grpc/support/log.h>
#include <grpc/support/slice.h>
#include "src/core/lib/client_config/initial_connect_string.h"
#include "src/core/lib/iomgr/sockaddr.h"
#include "src/core/lib/security/credentials.h"
#include "src/core/lib/support/string.h"
#include "test/core/util/port.h"
#include "test/core/util/test_config.h"
#include "test/core/util/test_tcp_server.h"
struct rpc_state {
char *target;
grpc_channel_credentials *creds;
grpc_completion_queue *cq;
grpc_channel *channel;
grpc_call *call;
grpc_op op;
gpr_slice_buffer incoming_buffer;
gpr_slice_buffer temp_incoming_buffer;
grpc_endpoint *tcp;
int done;
};
static const char *magic_connect_string = "magic initial string";
static int server_port;
static struct rpc_state state;
static grpc_closure on_read;
static void handle_read(grpc_exec_ctx *exec_ctx, void *arg, bool success) {
GPR_ASSERT(success);
gpr_slice_buffer_move_into(&state.temp_incoming_buffer,
&state.incoming_buffer);
if (state.incoming_buffer.length > strlen(magic_connect_string)) {
state.done = 1;
grpc_endpoint_shutdown(exec_ctx, state.tcp);
grpc_endpoint_destroy(exec_ctx, state.tcp);
} else {
grpc_endpoint_read(exec_ctx, state.tcp, &state.temp_incoming_buffer,
&on_read);
}
}
static void on_connect(grpc_exec_ctx *exec_ctx, void *arg, grpc_endpoint *tcp,
grpc_tcp_server_acceptor *acceptor) {
test_tcp_server *server = arg;
grpc_closure_init(&on_read, handle_read, NULL);
gpr_slice_buffer_init(&state.incoming_buffer);
gpr_slice_buffer_init(&state.temp_incoming_buffer);
state.tcp = tcp;
grpc_endpoint_add_to_pollset(exec_ctx, tcp, server->pollset);
grpc_endpoint_read(exec_ctx, tcp, &state.temp_incoming_buffer, &on_read);
}
static void set_magic_initial_string(struct sockaddr **addr, size_t *addr_len,
gpr_slice *connect_string) {
GPR_ASSERT(addr);
GPR_ASSERT(addr_len);
*connect_string = gpr_slice_from_copied_string(magic_connect_string);
}
static void reset_addr_and_set_magic_string(struct sockaddr **addr,
size_t *addr_len,
gpr_slice *connect_string) {
struct sockaddr_in target;
*connect_string = gpr_slice_from_copied_string(magic_connect_string);
gpr_free(*addr);
target.sin_family = AF_INET;
target.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
target.sin_port = htons((uint16_t)server_port);
*addr_len = sizeof(target);
*addr = (struct sockaddr *)gpr_malloc(sizeof(target));
memcpy(*addr, &target, sizeof(target));
}
static gpr_timespec n_sec_deadline(int seconds) {
return gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
gpr_time_from_seconds(seconds, GPR_TIMESPAN));
}
static void start_rpc(int use_creds, int target_port) {
state.done = 0;
state.cq = grpc_completion_queue_create(NULL);
if (use_creds) {
state.creds = grpc_fake_transport_security_credentials_create();
} else {
state.creds = NULL;
}
gpr_join_host_port(&state.target, "127.0.0.1", target_port);
if (use_creds) {
state.channel =
grpc_secure_channel_create(state.creds, state.target, NULL, NULL);
} else {
state.channel = grpc_insecure_channel_create(state.target, NULL, NULL);
}
state.call = grpc_channel_create_call(
state.channel, NULL, GRPC_PROPAGATE_DEFAULTS, state.cq, "/Service/Method",
"localhost", gpr_inf_future(GPR_CLOCK_REALTIME), NULL);
state.op.op = GRPC_OP_SEND_INITIAL_METADATA;
state.op.data.send_initial_metadata.count = 0;
state.op.flags = 0;
state.op.reserved = NULL;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(state.call, &state.op,
(size_t)(1), NULL, NULL));
grpc_completion_queue_next(state.cq, n_sec_deadline(1), NULL);
}
static void cleanup_rpc(void) {
grpc_event ev;
gpr_slice_buffer_destroy(&state.incoming_buffer);
gpr_slice_buffer_destroy(&state.temp_incoming_buffer);
grpc_channel_credentials_unref(state.creds);
grpc_call_destroy(state.call);
grpc_completion_queue_shutdown(state.cq);
do {
ev = grpc_completion_queue_next(state.cq, n_sec_deadline(1), NULL);
} while (ev.type != GRPC_QUEUE_SHUTDOWN);
grpc_completion_queue_destroy(state.cq);
grpc_channel_destroy(state.channel);
gpr_free(state.target);
}
static void poll_server_until_read_done(test_tcp_server *server) {
gpr_timespec deadline = n_sec_deadline(5);
while (state.done == 0 &&
gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0) {
test_tcp_server_poll(server, 1);
}
}
static void match_initial_magic_string(gpr_slice_buffer *buffer) {
size_t i, j, cmp_length;
size_t magic_length = strlen(magic_connect_string);
GPR_ASSERT(buffer->length >= magic_length);
for (i = 0, j = 0; i < state.incoming_buffer.count && j < magic_length; i++) {
char *dump =
gpr_dump_slice(state.incoming_buffer.slices[i], GPR_DUMP_ASCII);
cmp_length = GPR_MIN(strlen(dump), magic_length - j);
GPR_ASSERT(strncmp(dump, magic_connect_string + j, cmp_length) == 0);
j += cmp_length;
gpr_free(dump);
}
}
static void test_initial_string(test_tcp_server *server, int secure) {
grpc_test_set_initial_connect_string_function(set_magic_initial_string);
start_rpc(secure, server_port);
poll_server_until_read_done(server);
match_initial_magic_string(&state.incoming_buffer);
cleanup_rpc();
}
static void test_initial_string_with_redirect(test_tcp_server *server,
int secure) {
int another_port = grpc_pick_unused_port_or_die();
grpc_test_set_initial_connect_string_function(
reset_addr_and_set_magic_string);
start_rpc(secure, another_port);
poll_server_until_read_done(server);
match_initial_magic_string(&state.incoming_buffer);
cleanup_rpc();
}
static void run_test(void (*test)(test_tcp_server *server, int secure),
int secure) {
test_tcp_server test_server;
server_port = grpc_pick_unused_port_or_die();
test_tcp_server_init(&test_server, on_connect, &test_server);
test_tcp_server_start(&test_server, server_port);
test(&test_server, secure);
test_tcp_server_destroy(&test_server);
}
int main(int argc, char **argv) {
grpc_test_init(argc, argv);
grpc_init();
run_test(test_initial_string, 0);
run_test(test_initial_string, 1);
run_test(test_initial_string_with_redirect, 0);
run_test(test_initial_string_with_redirect, 1);
grpc_shutdown();
return 0;
}
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