| /* Copyright 2011 Justin Erenkrantz and Greg Stein |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "apr.h" |
| #include "apr_pools.h" |
| #include <apr_poll.h> |
| #include <apr_version.h> |
| #include <stdlib.h> |
| |
| #include "serf.h" |
| #include "serf_private.h" /* for serf__log and serf__bucket_stream_create */ |
| |
| #include "test_server.h" |
| |
| #define BUFSIZE 8192 |
| |
| /* Cleanup callback for a server. */ |
| static apr_status_t cleanup_server(void *baton) |
| { |
| serv_ctx_t *servctx = baton; |
| apr_status_t status; |
| |
| if (servctx->serv_sock) |
| status = apr_socket_close(servctx->serv_sock); |
| else |
| status = APR_EGENERAL; |
| |
| if (servctx->client_sock) { |
| apr_socket_close(servctx->client_sock); |
| } |
| |
| return status; |
| } |
| |
| /* Replay support functions */ |
| static void next_message(serv_ctx_t *servctx) |
| { |
| servctx->cur_message++; |
| } |
| |
| static void next_action(serv_ctx_t *servctx) |
| { |
| servctx->cur_action++; |
| servctx->action_buf_pos = 0; |
| } |
| |
| static apr_status_t |
| socket_write(serv_ctx_t *serv_ctx, const char *data, |
| apr_size_t *len) |
| { |
| return apr_socket_send(serv_ctx->client_sock, data, len); |
| } |
| |
| static apr_status_t |
| socket_read(serv_ctx_t *serv_ctx, char *data, |
| apr_size_t *len) |
| { |
| return apr_socket_recv(serv_ctx->client_sock, data, len); |
| } |
| |
| static apr_status_t |
| create_client_socket(apr_socket_t **skt, |
| serv_ctx_t *servctx, |
| const char *url) |
| { |
| apr_sockaddr_t *address; |
| apr_uri_t uri; |
| apr_status_t status; |
| |
| status = apr_uri_parse(servctx->pool, url, &uri); |
| if (status != APR_SUCCESS) |
| return status; |
| |
| status = apr_sockaddr_info_get(&address, |
| uri.hostname, |
| APR_UNSPEC, |
| uri.port, |
| 0, |
| servctx->pool); |
| if (status != APR_SUCCESS) |
| return status; |
| |
| status = apr_socket_create(skt, |
| address->family, |
| SOCK_STREAM, |
| #if APR_MAJOR_VERSION > 0 |
| APR_PROTO_TCP, |
| #endif |
| servctx->pool); |
| if (status != APR_SUCCESS) |
| return status; |
| |
| /* Set the socket to be non-blocking */ |
| status = apr_socket_timeout_set(*skt, 0); |
| if (status != APR_SUCCESS) |
| return status; |
| |
| status = apr_socket_connect(*skt, address); |
| if (status != APR_SUCCESS && !APR_STATUS_IS_EINPROGRESS(status)) |
| return status; |
| |
| return APR_SUCCESS; |
| } |
| |
| static apr_status_t detect_eof(void *baton, serf_bucket_t *aggregate_bucket) |
| { |
| return APR_EAGAIN; |
| } |
| |
| /* Verify received requests and take the necessary actions |
| (return a response, kill the connection ...) */ |
| static apr_status_t replay(serv_ctx_t *servctx, |
| apr_int16_t rtnevents, |
| apr_pool_t *pool) |
| { |
| apr_status_t status = APR_SUCCESS; |
| test_server_action_t *action; |
| |
| if (rtnevents & APR_POLLIN) { |
| if (servctx->message_list == NULL) { |
| /* we're not expecting any requests to reach this server! */ |
| serf__log(TEST_VERBOSE, __FILE__, |
| "Received request where none was expected.\n"); |
| |
| return SERF_ERROR_ISSUE_IN_TESTSUITE; |
| } |
| |
| if (servctx->cur_action >= servctx->action_count) { |
| char buf[128]; |
| apr_size_t len = sizeof(buf); |
| |
| status = servctx->read(servctx, buf, &len); |
| if (! APR_STATUS_IS_EAGAIN(status)) { |
| /* we're out of actions! */ |
| serf__log(TEST_VERBOSE, __FILE__, |
| "Received more requests than expected.\n"); |
| |
| return SERF_ERROR_ISSUE_IN_TESTSUITE; |
| } |
| return status; |
| } |
| |
| action = &servctx->action_list[servctx->cur_action]; |
| |
| serf__log(TEST_VERBOSE, __FILE__, |
| "POLLIN while replaying action %d, kind: %d.\n", |
| servctx->cur_action, action->kind); |
| |
| /* Read the remaining data from the client and kill the socket. */ |
| if (action->kind == SERVER_IGNORE_AND_KILL_CONNECTION) { |
| char buf[128]; |
| apr_size_t len = sizeof(buf); |
| |
| status = servctx->read(servctx, buf, &len); |
| |
| if (status == APR_EOF) { |
| serf__log(TEST_VERBOSE, __FILE__, |
| "Killing this connection.\n"); |
| apr_socket_close(servctx->client_sock); |
| servctx->client_sock = NULL; |
| next_action(servctx); |
| return APR_SUCCESS; |
| } |
| |
| return status; |
| } |
| else if (action->kind == SERVER_RECV || |
| (action->kind == SERVER_RESPOND && |
| servctx->outstanding_responses == 0)) { |
| apr_size_t msg_len, len; |
| char buf[128]; |
| test_server_message_t *message; |
| |
| message = &servctx->message_list[servctx->cur_message]; |
| msg_len = strlen(message->text); |
| |
| do |
| { |
| len = msg_len - servctx->message_buf_pos; |
| if (len > sizeof(buf)) |
| len = sizeof(buf); |
| |
| status = servctx->read(servctx, buf, &len); |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| |
| if (status == APR_EOF) { |
| serf__log(TEST_VERBOSE, __FILE__, |
| "Server: Client hung up the connection.\n"); |
| break; |
| } |
| if (servctx->options & TEST_SERVER_DUMP) |
| fwrite(buf, len, 1, stdout); |
| |
| if (strncmp(buf, |
| message->text + servctx->message_buf_pos, |
| len) != 0) { |
| /* ## TODO: Better diagnostics. */ |
| printf("Expected: (\n"); |
| fwrite(message->text + servctx->message_buf_pos, len, 1, |
| stdout); |
| printf(")\n"); |
| printf("Actual: (\n"); |
| fwrite(buf, len, 1, stdout); |
| printf(")\n"); |
| |
| return SERF_ERROR_ISSUE_IN_TESTSUITE; |
| } |
| |
| servctx->message_buf_pos += len; |
| |
| if (servctx->message_buf_pos >= msg_len) { |
| next_message(servctx); |
| servctx->message_buf_pos -= msg_len; |
| if (action->kind == SERVER_RESPOND) |
| servctx->outstanding_responses++; |
| if (action->kind == SERVER_RECV) |
| next_action(servctx); |
| break; |
| } |
| } while (!status); |
| } |
| else if (action->kind == PROXY_FORWARD) { |
| apr_size_t len; |
| char buf[BUFSIZE]; |
| serf_bucket_t *tmp; |
| |
| /* Read all incoming data from the client to forward it to the |
| server later. */ |
| do |
| { |
| len = BUFSIZE; |
| |
| status = servctx->read(servctx, buf, &len); |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| |
| serf__log(TEST_VERBOSE, __FILE__, |
| "proxy: reading %d bytes %.*s from client with " |
| "status %d.\n", |
| len, len, buf, status); |
| |
| if (status == APR_EOF) { |
| serf__log(TEST_VERBOSE, __FILE__, |
| "Proxy: client hung up the connection. Reset the " |
| "connection to the server.\n"); |
| /* We have to stop forwarding, if a new connection opens |
| the CONNECT request should not be forwarded to the |
| server. */ |
| next_action(servctx); |
| } |
| if (!servctx->servstream) |
| servctx->servstream = serf__bucket_stream_create( |
| servctx->allocator, |
| detect_eof,servctx); |
| if (len) { |
| tmp = serf_bucket_simple_copy_create(buf, len, |
| servctx->allocator); |
| serf_bucket_aggregate_append(servctx->servstream, tmp); |
| } |
| } while (!status); |
| } |
| } |
| if (rtnevents & APR_POLLOUT) { |
| action = &servctx->action_list[servctx->cur_action]; |
| |
| serf__log(TEST_VERBOSE, __FILE__, |
| "POLLOUT when replaying action %d, kind: %d.\n", servctx->cur_action, |
| action->kind); |
| |
| if (action->kind == SERVER_RESPOND && servctx->outstanding_responses) { |
| apr_size_t msg_len; |
| apr_size_t len; |
| |
| msg_len = strlen(action->text); |
| len = msg_len - servctx->action_buf_pos; |
| |
| status = servctx->send(servctx, |
| action->text + servctx->action_buf_pos, |
| &len); |
| if (status != APR_SUCCESS) |
| return status; |
| |
| if (servctx->options & TEST_SERVER_DUMP) |
| fwrite(action->text + servctx->action_buf_pos, len, 1, stdout); |
| |
| servctx->action_buf_pos += len; |
| |
| if (servctx->action_buf_pos >= msg_len) { |
| next_action(servctx); |
| servctx->outstanding_responses--; |
| } |
| } |
| else if (action->kind == SERVER_KILL_CONNECTION || |
| action->kind == SERVER_IGNORE_AND_KILL_CONNECTION) { |
| serf__log(TEST_VERBOSE, __FILE__, |
| "Killing this connection.\n"); |
| apr_socket_close(servctx->client_sock); |
| servctx->client_sock = NULL; |
| next_action(servctx); |
| } |
| else if (action->kind == PROXY_FORWARD) { |
| apr_size_t len; |
| char *buf; |
| |
| if (!servctx->proxy_client_sock) { |
| serf__log(TEST_VERBOSE, __FILE__, "Proxy: setting up connection " |
| "to server.\n"); |
| status = create_client_socket(&servctx->proxy_client_sock, |
| servctx, action->text); |
| if (!servctx->clientstream) |
| servctx->clientstream = serf__bucket_stream_create( |
| servctx->allocator, |
| detect_eof,servctx); |
| } |
| |
| /* Send all data received from the server to the client. */ |
| do |
| { |
| apr_size_t readlen; |
| |
| readlen = BUFSIZE; |
| |
| status = serf_bucket_read(servctx->clientstream, readlen, |
| &buf, &readlen); |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| if (!readlen) |
| break; |
| |
| len = readlen; |
| |
| serf__log(TEST_VERBOSE, __FILE__, |
| "proxy: sending %d bytes to client.\n", len); |
| status = servctx->send(servctx, buf, &len); |
| if (status != APR_SUCCESS) { |
| return status; |
| } |
| |
| if (len != readlen) /* abort for now, return buf to aggregate |
| if not everything could be sent. */ |
| return APR_EGENERAL; |
| } while (!status); |
| } |
| } |
| else if (rtnevents & APR_POLLIN) { |
| /* ignore */ |
| } |
| else { |
| printf("Unknown rtnevents: %d\n", rtnevents); |
| abort(); |
| } |
| |
| return status; |
| } |
| |
| /* Exchange data between proxy and server */ |
| static apr_status_t proxy_replay(serv_ctx_t *servctx, |
| apr_int16_t rtnevents, |
| apr_pool_t *pool) |
| { |
| apr_status_t status; |
| |
| if (rtnevents & APR_POLLIN) { |
| apr_size_t len; |
| char buf[BUFSIZE]; |
| serf_bucket_t *tmp; |
| |
| serf__log(TEST_VERBOSE, __FILE__, "proxy_replay: POLLIN\n"); |
| /* Read all incoming data from the server to forward it to the |
| client later. */ |
| do |
| { |
| len = BUFSIZE; |
| |
| status = apr_socket_recv(servctx->proxy_client_sock, buf, &len); |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| |
| serf__log(TEST_VERBOSE, __FILE__, |
| "proxy: reading %d bytes %.*s from server.\n", |
| len, len, buf); |
| tmp = serf_bucket_simple_copy_create(buf, len, |
| servctx->allocator); |
| serf_bucket_aggregate_append(servctx->clientstream, tmp); |
| } while (!status); |
| } |
| |
| if (rtnevents & APR_POLLOUT) { |
| apr_size_t len; |
| char *buf; |
| |
| serf__log(TEST_VERBOSE, __FILE__, "proxy_replay: POLLOUT\n"); |
| /* Send all data received from the client to the server. */ |
| do |
| { |
| apr_size_t readlen; |
| |
| readlen = BUFSIZE; |
| |
| if (!servctx->servstream) |
| servctx->servstream = serf__bucket_stream_create( |
| servctx->allocator, |
| detect_eof,servctx); |
| status = serf_bucket_read(servctx->servstream, BUFSIZE, |
| &buf, &readlen); |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| if (!readlen) |
| break; |
| |
| len = readlen; |
| |
| serf__log(TEST_VERBOSE, __FILE__, |
| "proxy: sending %d bytes %.*s to server.\n", |
| len, len, buf); |
| status = apr_socket_send(servctx->proxy_client_sock, buf, &len); |
| if (status != APR_SUCCESS) { |
| return status; |
| } |
| |
| if (len != readlen) /* abort for now */ |
| return APR_EGENERAL; |
| } while (!status); |
| } |
| else if (rtnevents & APR_POLLIN) { |
| /* ignore */ |
| } |
| else { |
| printf("Unknown rtnevents: %d\n", rtnevents); |
| abort(); |
| } |
| |
| return status; |
| } |
| |
| apr_status_t run_test_server(serv_ctx_t *servctx, |
| apr_short_interval_time_t duration, |
| apr_pool_t *pool) |
| { |
| apr_status_t status; |
| apr_pollset_t *pollset; |
| apr_int32_t num; |
| const apr_pollfd_t *desc; |
| |
| /* create a new pollset */ |
| #ifdef BROKEN_WSAPOLL |
| status = apr_pollset_create_ex(&pollset, 32, pool, 0, |
| APR_POLLSET_SELECT); |
| #else |
| status = apr_pollset_create(&pollset, 32, pool, 0); |
| #endif |
| |
| if (status != APR_SUCCESS) |
| return status; |
| |
| /* Don't accept new connection while processing client connection. At |
| least for present time.*/ |
| if (servctx->client_sock) { |
| apr_pollfd_t pfd = { 0 }; |
| |
| pfd.desc_type = APR_POLL_SOCKET; |
| pfd.desc.s = servctx->client_sock; |
| pfd.reqevents = APR_POLLIN | APR_POLLOUT; |
| |
| status = apr_pollset_add(pollset, &pfd); |
| if (status != APR_SUCCESS) |
| goto cleanup; |
| |
| if (servctx->proxy_client_sock) { |
| apr_pollfd_t pfd = { 0 }; |
| |
| pfd.desc_type = APR_POLL_SOCKET; |
| pfd.desc.s = servctx->proxy_client_sock; |
| pfd.reqevents = APR_POLLIN | APR_POLLOUT; |
| |
| status = apr_pollset_add(pollset, &pfd); |
| if (status != APR_SUCCESS) |
| goto cleanup; |
| } |
| } |
| else { |
| apr_pollfd_t pfd = { 0 }; |
| |
| pfd.desc_type = APR_POLL_SOCKET; |
| pfd.desc.s = servctx->serv_sock; |
| pfd.reqevents = APR_POLLIN; |
| |
| status = apr_pollset_add(pollset, &pfd); |
| if (status != APR_SUCCESS) |
| goto cleanup; |
| } |
| |
| status = apr_pollset_poll(pollset, APR_USEC_PER_SEC >> 1, &num, &desc); |
| if (status != APR_SUCCESS) |
| goto cleanup; |
| |
| while (num--) { |
| if (desc->desc.s == servctx->serv_sock) { |
| status = apr_socket_accept(&servctx->client_sock, servctx->serv_sock, |
| servctx->pool); |
| if (status != APR_SUCCESS) |
| goto cleanup; |
| |
| serf__log_skt(TEST_VERBOSE, __FILE__, servctx->client_sock, |
| "server/proxy accepted incoming connection.\n"); |
| |
| |
| apr_socket_opt_set(servctx->client_sock, APR_SO_NONBLOCK, 1); |
| apr_socket_timeout_set(servctx->client_sock, 0); |
| |
| status = APR_SUCCESS; |
| goto cleanup; |
| } |
| |
| if (desc->desc.s == servctx->client_sock) { |
| if (servctx->handshake) { |
| status = servctx->handshake(servctx); |
| if (status) |
| goto cleanup; |
| } |
| |
| /* Replay data to socket. */ |
| status = replay(servctx, desc->rtnevents, pool); |
| |
| if (APR_STATUS_IS_EOF(status)) { |
| apr_socket_close(servctx->client_sock); |
| servctx->client_sock = NULL; |
| if (servctx->reset) |
| servctx->reset(servctx); |
| |
| /* If this is a proxy and the client closed the connection, also |
| close the connection to the server. */ |
| if (servctx->proxy_client_sock) { |
| apr_socket_close(servctx->proxy_client_sock); |
| servctx->proxy_client_sock = NULL; |
| goto cleanup; |
| } |
| } |
| else if (APR_STATUS_IS_EAGAIN(status)) { |
| status = APR_SUCCESS; |
| } |
| else if (status != APR_SUCCESS) { |
| /* Real error. */ |
| goto cleanup; |
| } |
| } |
| if (desc->desc.s == servctx->proxy_client_sock) { |
| /* Replay data to proxy socket. */ |
| status = proxy_replay(servctx, desc->rtnevents, pool); |
| if (APR_STATUS_IS_EOF(status)) { |
| apr_socket_close(servctx->proxy_client_sock); |
| servctx->proxy_client_sock = NULL; |
| } |
| else if (APR_STATUS_IS_EAGAIN(status)) { |
| status = APR_SUCCESS; |
| } |
| else if (status != APR_SUCCESS) { |
| /* Real error. */ |
| goto cleanup; |
| } |
| } |
| |
| desc++; |
| } |
| |
| cleanup: |
| apr_pollset_destroy(pollset); |
| |
| return status; |
| } |
| |
| |
| /* Setup the context needed to start a TCP server on adress. |
| message_list is a list of expected requests. |
| action_list is the list of responses to be returned in order. |
| */ |
| void setup_test_server(serv_ctx_t **servctx_p, |
| apr_sockaddr_t *address, |
| test_server_message_t *message_list, |
| apr_size_t message_count, |
| test_server_action_t *action_list, |
| apr_size_t action_count, |
| apr_int32_t options, |
| apr_pool_t *pool) |
| { |
| serv_ctx_t *servctx; |
| |
| servctx = apr_pcalloc(pool, sizeof(*servctx)); |
| apr_pool_cleanup_register(pool, servctx, |
| cleanup_server, |
| apr_pool_cleanup_null); |
| *servctx_p = servctx; |
| |
| servctx->serv_addr = address; |
| servctx->options = options; |
| servctx->pool = pool; |
| servctx->allocator = serf_bucket_allocator_create(pool, NULL, NULL); |
| servctx->message_list = message_list; |
| servctx->message_count = message_count; |
| servctx->action_list = action_list; |
| servctx->action_count = action_count; |
| |
| /* Start replay from first action. */ |
| servctx->cur_action = 0; |
| servctx->action_buf_pos = 0; |
| servctx->outstanding_responses = 0; |
| |
| servctx->read = socket_read; |
| servctx->send = socket_write; |
| |
| *servctx_p = servctx; |
| } |
| |
| apr_status_t start_test_server(serv_ctx_t *servctx) |
| { |
| apr_status_t status; |
| apr_socket_t *serv_sock; |
| |
| /* create server socket */ |
| #if APR_VERSION_AT_LEAST(1, 0, 0) |
| status = apr_socket_create(&serv_sock, servctx->serv_addr->family, |
| SOCK_STREAM, 0, |
| servctx->pool); |
| #else |
| status = apr_socket_create(&serv_sock, servctx->serv_addr->family, |
| SOCK_STREAM, |
| servctx->pool); |
| #endif |
| |
| if (status != APR_SUCCESS) |
| return status; |
| |
| apr_socket_opt_set(serv_sock, APR_SO_NONBLOCK, 1); |
| apr_socket_timeout_set(serv_sock, 0); |
| apr_socket_opt_set(serv_sock, APR_SO_REUSEADDR, 1); |
| |
| status = apr_socket_bind(serv_sock, servctx->serv_addr); |
| if (status != APR_SUCCESS) |
| return status; |
| |
| /* listen for clients */ |
| status = apr_socket_listen(serv_sock, SOMAXCONN); |
| if (status != APR_SUCCESS) |
| return status; |
| |
| servctx->serv_sock = serv_sock; |
| servctx->client_sock = NULL; |
| |
| return APR_SUCCESS; |
| } |
