/* * Copyright (c) 2019 TAOS Data, Inc. * * This program is free software: you can use, redistribute, and/or modify * it under the terms of the GNU Affero General Public License, version 3 * or later ("AGPL"), as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see . */ #define _DEFAULT_SOURCE // clang-format off #include #include "zlib.h" #include "thttp.h" #include "taoserror.h" #include "tlog.h" #define HTTP_RECV_BUF_SIZE 1024 typedef struct SHttpClient { uv_connect_t conn; uv_tcp_t tcp; uv_write_t req; uv_buf_t* wbuf; char *rbuf; char* addr; uint16_t port; } SHttpClient; static int32_t taosBuildHttpHeader(const char* server, int32_t contLen, char* pHead, int32_t headLen, EHttpCompFlag flag) { if (flag == HTTP_FLAT) { return snprintf(pHead, headLen, "POST /report HTTP/1.1\n" "Host: %s\n" "Content-Type: application/json\n" "Content-Length: %d\n\n", server, contLen); } else if (flag == HTTP_GZIP) { return snprintf(pHead, headLen, "POST /report HTTP/1.1\n" "Host: %s\n" "Content-Type: application/json\n" "Content-Encoding: gzip\n" "Content-Length: %d\n\n", server, contLen); } else { return -1; } } static int32_t taosCompressHttpRport(char* pSrc, int32_t srcLen) { int32_t code = -1; int32_t destLen = srcLen; void* pDest = taosMemoryMalloc(destLen); if (pDest == NULL) { terrno = TSDB_CODE_OUT_OF_MEMORY; goto _OVER; } z_stream gzipStream = {0}; gzipStream.zalloc = (alloc_func)0; gzipStream.zfree = (free_func)0; gzipStream.opaque = (voidpf)0; if (deflateInit2(&gzipStream, Z_DEFAULT_COMPRESSION, Z_DEFLATED, MAX_WBITS + 16, 8, Z_DEFAULT_STRATEGY) != Z_OK) { terrno = TSDB_CODE_OUT_OF_MEMORY; goto _OVER; } gzipStream.next_in = (Bytef*)pSrc; gzipStream.avail_in = (uLong)srcLen; gzipStream.next_out = (Bytef*)pDest; gzipStream.avail_out = (uLong)(destLen); while (gzipStream.avail_in != 0 && gzipStream.total_out < (uLong)(destLen)) { if (deflate(&gzipStream, Z_FULL_FLUSH) != Z_OK) { terrno = TSDB_CODE_COMPRESS_ERROR; goto _OVER; } } if (gzipStream.avail_in != 0) { terrno = TSDB_CODE_COMPRESS_ERROR; goto _OVER; } int32_t err = 0; while (1) { if ((err = deflate(&gzipStream, Z_FINISH)) == Z_STREAM_END) { break; } if (err != Z_OK) { terrno = TSDB_CODE_COMPRESS_ERROR; goto _OVER; } } if (deflateEnd(&gzipStream) != Z_OK) { terrno = TSDB_CODE_COMPRESS_ERROR; goto _OVER; } if (gzipStream.total_out >= srcLen) { terrno = TSDB_CODE_COMPRESS_ERROR; goto _OVER; } code = 0; _OVER: if (code == 0) { memcpy(pSrc, pDest, gzipStream.total_out); code = gzipStream.total_out; } taosMemoryFree(pDest); return code; } static void destroyHttpClient(SHttpClient* cli) { taosMemoryFree(cli->wbuf); taosMemoryFree(cli->rbuf); taosMemoryFree(cli->addr); taosMemoryFree(cli); } static void clientCloseCb(uv_handle_t* handle) { SHttpClient* cli = handle->data; destroyHttpClient(cli); } static void clientAllocBuffCb(uv_handle_t *handle, size_t suggested_size, uv_buf_t *buf) { SHttpClient* cli = handle->data; buf->base = cli->rbuf; buf->len = HTTP_RECV_BUF_SIZE; } static void clientRecvCb(uv_stream_t* handle, ssize_t nread, const uv_buf_t *buf) { SHttpClient* cli = handle->data; if (nread < 0) { uError("http-report recv error:%s", uv_err_name(nread)); } else { uTrace("http-report succ to recv %d bytes, just ignore it", nread); } uv_close((uv_handle_t*)&cli->tcp, clientCloseCb); } static void clientSentCb(uv_write_t* req, int32_t status) { SHttpClient* cli = req->data; if (status != 0) { terrno = TAOS_SYSTEM_ERROR(status); uError("http-report failed to send data %s", uv_strerror(status)); } else { uTrace("http-report succ to send data"); } uv_read_start((uv_stream_t *)&cli->tcp, clientAllocBuffCb, clientRecvCb); } static void clientConnCb(uv_connect_t* req, int32_t status) { SHttpClient* cli = req->data; if (status != 0) { terrno = TAOS_SYSTEM_ERROR(status); uError("http-report failed to conn to server, reason:%s, dst:%s:%d", uv_strerror(status), cli->addr, cli->port); uv_close((uv_handle_t*)&cli->tcp, clientCloseCb); return; } uv_write(&cli->req, (uv_stream_t*)&cli->tcp, cli->wbuf, 2, clientSentCb); } static int32_t taosBuildDstAddr(const char* server, uint16_t port, struct sockaddr_in* dest) { uint32_t ip = taosGetIpv4FromFqdn(server); if (ip == 0xffffffff) { terrno = TAOS_SYSTEM_ERROR(errno); uError("http-report failed to get http server:%s since %s", server, errno == 0 ? "invalid http server" : terrstr()); return -1; } char buf[128] = {0}; tinet_ntoa(buf, ip); uv_ip4_addr(buf, port, dest); return 0; } int32_t taosSendHttpReport(const char* server, uint16_t port, char* pCont, int32_t contLen, EHttpCompFlag flag) { struct sockaddr_in dest = {0}; if (taosBuildDstAddr(server, port, &dest) < 0) { return -1; } if (flag == HTTP_GZIP) { int32_t dstLen = taosCompressHttpRport(pCont, contLen); if (dstLen > 0) { contLen = dstLen; } else { flag = HTTP_FLAT; } } terrno = 0; char header[2048] = {0}; int32_t headLen = taosBuildHttpHeader(server, contLen, header, sizeof(header), flag); uv_buf_t* wb = taosMemoryCalloc(2, sizeof(uv_buf_t)); wb[0] = uv_buf_init((char*)header, headLen); // stack var wb[1] = uv_buf_init((char*)pCont, contLen); // heap var SHttpClient* cli = taosMemoryCalloc(1, sizeof(SHttpClient)); cli->conn.data = cli; cli->tcp.data = cli; cli->req.data = cli; cli->wbuf = wb; cli->rbuf = taosMemoryCalloc(1, HTTP_RECV_BUF_SIZE); cli->addr = tstrdup(server); cli->port = port; uv_loop_t* loop = uv_default_loop(); uv_tcp_init(loop, &cli->tcp); // set up timeout to avoid stuck; int32_t fd = taosCreateSocketWithTimeout(5); uv_tcp_open((uv_tcp_t*)&cli->tcp, fd); int32_t ret = uv_tcp_connect(&cli->conn, &cli->tcp, (const struct sockaddr*)&dest, clientConnCb); if (ret != 0) { uError("http-report failed to connect to server, reason:%s, dst:%s:%d", uv_strerror(ret), cli->addr, cli->port); destroyHttpClient(cli); uv_stop(loop); } uv_run(loop, UV_RUN_DEFAULT); uv_loop_close(loop); return terrno; } // clang-format on