diff options
Diffstat (limited to 'src/fluent-bit/plugins/out_websocket/websocket.c')
-rw-r--r-- | src/fluent-bit/plugins/out_websocket/websocket.c | 331 |
1 files changed, 0 insertions, 331 deletions
diff --git a/src/fluent-bit/plugins/out_websocket/websocket.c b/src/fluent-bit/plugins/out_websocket/websocket.c deleted file mode 100644 index 6a196e16d..000000000 --- a/src/fluent-bit/plugins/out_websocket/websocket.c +++ /dev/null @@ -1,331 +0,0 @@ -/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ - -/* Fluent Bit - * ========== - * Copyright (C) 2015-2022 The Fluent Bit Authors - * - * 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 <fluent-bit/flb_info.h> -#include <fluent-bit/flb_output.h> -#include <fluent-bit/flb_utils.h> -#include <fluent-bit/flb_network.h> -#include <fluent-bit/flb_time.h> -#include <fluent-bit/flb_upstream.h> -#include <fluent-bit/flb_crypto.h> -#include <fluent-bit/flb_pack.h> -#include <fluent-bit/flb_sds.h> -#include <fluent-bit/flb_http_client.h> -#include <fluent-bit/flb_config_map.h> -#include <msgpack.h> - -#include "websocket.h" -#include "websocket_conf.h" -struct flb_output_plugin out_websocket_plugin; - -#define SECURED_BY "Fluent Bit" - - -static int flb_ws_handshake(struct flb_connection *u_conn, - struct flb_out_ws *ctx) -{ - int ret; - size_t bytes_sent; - struct flb_http_client *c; - - if (!u_conn) { - flb_error("[output_ws] upstream connection error"); - return -1; - } - - /* Compose HTTP Client request */ - c = flb_http_client(u_conn, FLB_HTTP_GET, ctx->uri, - NULL, 0, NULL, 0, NULL, 0); - if (!c) { - flb_upstream_conn_release(u_conn); - return -1; - } - - flb_http_buffer_size(c, ctx->buffer_size); - flb_http_add_header(c, "Upgrade", 7, "websocket", 9); - flb_http_add_header(c, "Connection", 10, "Upgrade", 7); - flb_http_add_header(c, "Sec-WebSocket-Key", 17, "dGhlIHNhbXBsZSBub25jZQ==", 24); - flb_http_add_header(c, "Sec-WebSocket-Version", 21, "13", 2); - - /* Perform request*/ - ret = flb_http_do(c, &bytes_sent); - - if (ret != 0 || c->resp.status != 101) { - if (c->resp.payload_size > 0) { - flb_debug("[output_ws] Websocket Server Response\n%s", - c->resp.payload); - } - flb_http_client_destroy(c); - flb_upstream_conn_release(u_conn); - flb_debug("[out_ws] Http Get Operation ret = %i, http resp = %i", ret, c->resp.status); - return -1; - } - flb_http_client_destroy(c); - return 0; -} - -static void flb_ws_mask(char *data, int len, char *mask) -{ - int i; - for (i=0;i<len;++i) { - *(data+i) ^= *(mask+(i%4)); - } -} - -static int flb_ws_sendDataFrameHeader(struct flb_connection *u_conn, - struct flb_out_ws *ctx, const void *data, size_t bytes) -{ - int ret = -1; - char* data_frame_head; - size_t bytes_sent; - int data_frame_head_len = 0; - //TODO use random function to generate masking_key - char masking_key[4] = {0x12, 0x34, 0x56, 0x78}; - unsigned long long payloadSize = bytes; - - flb_ws_mask((char *)data, payloadSize, masking_key); - if (payloadSize < 126) { - data_frame_head = (char *)flb_malloc(6); - if (!data_frame_head) { - flb_errno(); - return -1; - } - data_frame_head[0] = 0x81; - data_frame_head[1] = (payloadSize & 0xff) | 0x80; - data_frame_head[2] = masking_key[0]; - data_frame_head[3] = masking_key[1]; - data_frame_head[4] = masking_key[2]; - data_frame_head[5] = masking_key[3]; - data_frame_head_len = 6; - } - else if (payloadSize < 65536) { - data_frame_head = (char *)flb_malloc(8); - if (!data_frame_head) { - flb_errno(); - return -1; - } - data_frame_head[0] = 0x81; - data_frame_head[1] = 126 | 0x80; - data_frame_head[2] = (payloadSize >> 8) & 0xff; - data_frame_head[3] = (payloadSize >> 0) & 0xff; - data_frame_head[4] = masking_key[0]; - data_frame_head[5] = masking_key[1]; - data_frame_head[6] = masking_key[2]; - data_frame_head[7] = masking_key[3]; - data_frame_head_len = 8; - } - else { - data_frame_head = (char *)flb_malloc(14); - if (!data_frame_head) { - flb_errno(); - return -1; - } - data_frame_head[0] = 0x81; - data_frame_head[1] = 127 | 0x80; - data_frame_head[2] = (payloadSize >> 56) & 0xff; - data_frame_head[3] = (payloadSize >> 48) & 0xff; - data_frame_head[4] = (payloadSize >> 40) & 0xff; - data_frame_head[5] = (payloadSize >> 32) & 0xff; - data_frame_head[6] = (payloadSize >> 24) & 0xff; - data_frame_head[7] = (payloadSize >> 16) & 0xff; - data_frame_head[8] = (payloadSize >> 8) & 0xff; - data_frame_head[9] = (payloadSize >> 0) & 0xff; - data_frame_head[10] = masking_key[0]; - data_frame_head[11] = masking_key[1]; - data_frame_head[12] = masking_key[2]; - data_frame_head[13] = masking_key[3]; - data_frame_head_len = 14; - } - ret = flb_io_net_write(u_conn, data_frame_head, data_frame_head_len, &bytes_sent); - if (ret == -1) { - flb_error("[out_ws] could not write dataframe header"); - goto error; - } - flb_free(data_frame_head); - return 0; - -error: - flb_free(data_frame_head); - return -1; -} - -static int cb_ws_init(struct flb_output_instance *ins, - struct flb_config *config, void *data) -{ - struct flb_out_ws *ctx = NULL; - - ctx = flb_ws_conf_create(ins, config); - if (!ctx) { - return -1; - } - - ctx->handshake = 1; - ctx->last_input_timestamp = time(NULL); - flb_output_set_context(ins, ctx); - return 0; -} - -static int cb_ws_exit(void *data, struct flb_config *config) -{ - struct flb_out_ws *ctx = data; - flb_ws_conf_destroy(ctx); - return 0; -} - -static void cb_ws_flush(struct flb_event_chunk *event_chunk, - struct flb_output_flush *out_flush, - struct flb_input_instance *i_ins, - void *out_context, - struct flb_config *config) -{ - int ret = -1; - size_t bytes_sent; - flb_sds_t json = NULL; - struct flb_upstream *u; - struct flb_connection *u_conn; - struct flb_out_ws *ctx = out_context; - time_t now; - - /* Get upstream context and connection */ - u = ctx->u; - u_conn = flb_upstream_conn_get(u); - - if (!u_conn) { - flb_error("[out_ws] no upstream connections available to %s:%i", u->tcp_host, u->tcp_port); - ctx->handshake = 1; - FLB_OUTPUT_RETURN(FLB_RETRY); - } - - now = time(NULL); - - //TODO how to determine the interval? conn disconnet is about 30 sec, so we set 20 ssecnds here. - flb_debug("[out_ws] interval is %ld and handshake is %d", now - ctx->last_input_timestamp, ctx->handshake); - if ((now - ctx->last_input_timestamp > ctx->idle_interval) && (ctx->handshake == 0)) { - ctx->handshake = 1; - flb_upstream_conn_release(u_conn); - FLB_OUTPUT_RETURN(FLB_RETRY); - } - ctx->last_input_timestamp = now; - - if (ctx->handshake == 1) { - /* Handshake with websocket server*/ - flb_info("[out_ws] handshake for ws"); - ret = flb_ws_handshake(u_conn, ctx); - if (ret == -1) { - flb_upstream_conn_release(u_conn); - FLB_OUTPUT_RETURN(FLB_RETRY); - } - ctx->handshake = 0; - } - - /* Data format process*/ - if (ctx->out_format != FLB_PACK_JSON_FORMAT_NONE) { - json = flb_pack_msgpack_to_json_format(event_chunk->data, - event_chunk->size, - ctx->out_format, - ctx->json_date_format, - ctx->json_date_key); - - if (!json) { - flb_error("[out_ws] error formatting JSON payload"); - flb_upstream_conn_release(u_conn); - FLB_OUTPUT_RETURN(FLB_ERROR); - } - } - - /* Write message header */ - if (ctx->out_format == FLB_PACK_JSON_FORMAT_NONE) { - ret = flb_ws_sendDataFrameHeader(u_conn, ctx, - event_chunk->data, - event_chunk->size); - } - else { - ret = flb_ws_sendDataFrameHeader(u_conn, ctx, json, flb_sds_len(json)); - } - - if (ret == -1) { - flb_error("[out_ws] dataFrameHeader sent failed"); - ctx->handshake = 1; - if (json) { - flb_sds_destroy(json); - } - flb_upstream_conn_release(u_conn); - FLB_OUTPUT_RETURN(FLB_RETRY); - } - - /* Write message body*/ - if (ctx->out_format == FLB_PACK_JSON_FORMAT_NONE) { - ret = flb_io_net_write(u_conn, - event_chunk->data, - event_chunk->size, - &bytes_sent); - } - else { - ret = flb_io_net_write(u_conn, json, flb_sds_len(json), &bytes_sent); - flb_sds_destroy(json); - } - - //flb_info("[out_ws] sendDataFrame number of bytes sent = %i", ret); - if (ret == -1) { - ctx->handshake = 1; - flb_upstream_conn_release(u_conn); - FLB_OUTPUT_RETURN(FLB_RETRY); - } - - /* Release the connection */ - flb_upstream_conn_release(u_conn); - FLB_OUTPUT_RETURN(FLB_OK); -} - -/* Configuration properties map */ -static struct flb_config_map config_map[] = { - { - FLB_CONFIG_MAP_STR, "uri", NULL, - 0, FLB_TRUE, offsetof(struct flb_out_ws, uri), - "Specify an optional URI for the target web socket server, e.g: /something" - }, - { - FLB_CONFIG_MAP_STR, "format", NULL, - 0, FLB_FALSE, 0, - "Set desired payload format: json, json_stream, json_lines, gelf or msgpack" - }, - { - FLB_CONFIG_MAP_STR, "json_date_format", "double", - 0, FLB_FALSE, 0, - "Specify the format of the date" - }, - { - FLB_CONFIG_MAP_STR, "json_date_key", "date", - 0, FLB_TRUE, offsetof(struct flb_out_ws, json_date_key), - "Specify the name of the date field in output" - }, - /* EOF */ - {0} -}; - -/* Plugin reference */ -struct flb_output_plugin out_websocket_plugin = { - .name = "websocket", - .description = "Websocket", - .cb_init = cb_ws_init, - .cb_flush = cb_ws_flush, - .cb_exit = cb_ws_exit, - .config_map = config_map, - .flags = FLB_OUTPUT_NET | FLB_IO_OPT_TLS, -}; |