mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-27 05:38:31 +08:00
264 lines
7.1 KiB
C++
264 lines
7.1 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#include "HttpBody.h"
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#include "Util/util.h"
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#include "Util/uv_errno.h"
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#include "Util/logger.h"
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#include "HttpClient.h"
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#ifndef _WIN32
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#include <sys/mman.h>
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#endif
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#ifndef _WIN32
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#define ENABLE_MMAP
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#endif
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namespace mediakit {
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HttpStringBody::HttpStringBody(string str){
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_str = std::move(str);
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}
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ssize_t HttpStringBody::remainSize() {
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return _str.size() - _offset;
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}
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Buffer::Ptr HttpStringBody::readData(size_t size) {
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size = MIN((size_t)remainSize(), size);
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if(!size){
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//没有剩余字节了
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return nullptr;
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}
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auto ret = std::make_shared<BufferString>(_str,_offset,size);
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_offset += size;
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return ret;
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}
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//////////////////////////////////////////////////////////////////
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HttpFileBody::HttpFileBody(const string &filePath){
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std::shared_ptr<FILE> fp(fopen(filePath.data(), "rb"), [](FILE *fp) {
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if(fp){
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fclose(fp);
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}
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});
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if(!fp){
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init(fp,0,0);
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}else{
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init(fp,0,HttpMultiFormBody::fileSize(fp.get()));
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}
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}
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HttpFileBody::HttpFileBody(const std::shared_ptr<FILE> &fp, size_t offset, size_t max_size) {
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init(fp,offset,max_size);
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}
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#if defined(_WIN32) || defined(_WIN64)
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#define fseek64 _fseeki64
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#define ftell64 _ftelli64
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#else
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#define fseek64 fseek
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#define ftell64 ftell
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#endif
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void HttpFileBody::init(const std::shared_ptr<FILE> &fp,size_t offset, size_t max_size){
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_fp = fp;
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_max_size = max_size;
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#ifdef ENABLE_MMAP
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do {
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if(!_fp){
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//文件不存在
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break;
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}
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int fd = fileno(fp.get());
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if (fd < 0) {
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WarnL << "fileno failed:" << get_uv_errmsg(false);
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break;
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}
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auto ptr = (char *) mmap(NULL, max_size, PROT_READ, MAP_SHARED, fd, offset);
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if (ptr == MAP_FAILED) {
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WarnL << "mmap failed:" << get_uv_errmsg(false);
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break;
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}
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_map_addr.reset(ptr,[max_size,fp](char *ptr){
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munmap(ptr,max_size);
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});
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} while (false);
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#endif
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if(!_map_addr && offset && fp.get()){
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//未映射,那么fseek设置偏移量
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fseek64(fp.get(), offset, SEEK_SET);
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}
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}
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class BufferMmap : public Buffer{
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public:
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typedef std::shared_ptr<BufferMmap> Ptr;
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BufferMmap(const std::shared_ptr<char> &map_addr, size_t offset, size_t size) {
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_map_addr = map_addr;
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_data = map_addr.get() + offset;
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_size = size;
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}
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~BufferMmap() override{};
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//返回数据长度
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char *data() const override {
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return _data;
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}
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size_t size() const override{
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return _size;
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}
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private:
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std::shared_ptr<char> _map_addr;
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char *_data;
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size_t _size;
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};
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ssize_t HttpFileBody::remainSize() {
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return _max_size - _offset;
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}
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Buffer::Ptr HttpFileBody::readData(size_t size) {
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size = MIN((size_t)remainSize(),size);
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if(!size){
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//没有剩余字节了
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return nullptr;
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}
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if(!_map_addr){
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//fread模式
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ssize_t iRead;
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auto ret = _pool.obtain();
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ret->setCapacity(size + 1);
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do{
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iRead = fread(ret->data(), 1, size, _fp.get());
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}while(-1 == iRead && UV_EINTR == get_uv_error(false));
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if(iRead > 0){
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//读到数据了
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ret->setSize(iRead);
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_offset += iRead;
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return std::move(ret);
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}
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//读取文件异常，文件真实长度小于声明长度
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_offset = _max_size;
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WarnL << "read file err:" << get_uv_errmsg();
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return nullptr;
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}
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//mmap模式
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auto ret = std::make_shared<BufferMmap>(_map_addr,_offset,size);
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_offset += size;
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return ret;
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}
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//////////////////////////////////////////////////////////////////
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HttpMultiFormBody::HttpMultiFormBody(const HttpArgs &args,const string &filePath,const string &boundary){
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std::shared_ptr<FILE> fp(fopen(filePath.data(), "rb"), [](FILE *fp) {
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if(fp){
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fclose(fp);
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}
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});
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if(!fp){
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throw std::invalid_argument(StrPrinter << "open file failed：" << filePath << " " << get_uv_errmsg());
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}
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_fileBody = std::make_shared<HttpFileBody>(fp, 0, fileSize(fp.get()));
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auto fileName = filePath;
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auto pos = filePath.rfind('/');
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if(pos != string::npos){
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fileName = filePath.substr(pos + 1);
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}
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_bodyPrefix = multiFormBodyPrefix(args,boundary,fileName);
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_bodySuffix = multiFormBodySuffix(boundary);
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_totalSize = _bodyPrefix.size() + _bodySuffix.size() + _fileBody->remainSize();
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}
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ssize_t HttpMultiFormBody::remainSize() {
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return _totalSize - _offset;
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}
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Buffer::Ptr HttpMultiFormBody::readData(size_t size){
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if(_bodyPrefix.size()){
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auto ret = std::make_shared<BufferString>(_bodyPrefix);
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_offset += _bodyPrefix.size();
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_bodyPrefix.clear();
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return ret;
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}
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if(_fileBody->remainSize()){
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auto ret = _fileBody->readData(size);
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if(!ret){
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//读取文件出现异常，提前中断
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_offset = _totalSize;
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}else{
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_offset += ret->size();
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}
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return ret;
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}
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if(_bodySuffix.size()){
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auto ret = std::make_shared<BufferString>(_bodySuffix);
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_offset = _totalSize;
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_bodySuffix.clear();
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return ret;
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}
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return nullptr;
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}
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string HttpMultiFormBody::multiFormBodySuffix(const string &boundary){
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string MPboundary = string("--") + boundary;
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string endMPboundary = MPboundary + "--";
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_StrPrinter body;
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body << "\r\n" << endMPboundary;
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return std::move(body);
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}
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size_t HttpMultiFormBody::fileSize(FILE *fp) {
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auto current = ftell64(fp);
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fseek64(fp, 0L, SEEK_END); /* 定位到文件末尾 */
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auto end = ftell64(fp); /* 得到文件大小 */
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fseek64(fp, current, SEEK_SET);
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return end - current;
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}
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string HttpMultiFormBody::multiFormContentType(const string &boundary){
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return StrPrinter << "multipart/form-data; boundary=" << boundary;
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}
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string HttpMultiFormBody::multiFormBodyPrefix(const HttpArgs &args,const string &boundary,const string &fileName){
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string MPboundary = string("--") + boundary;
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_StrPrinter body;
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for(auto &pr : args){
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body << MPboundary << "\r\n";
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body << "Content-Disposition: form-data; name=\"" << pr.first << "\"\r\n\r\n";
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body << pr.second << "\r\n";
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}
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body << MPboundary << "\r\n";
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body << "Content-Disposition: form-data; name=\"" << "file" << "\";filename=\"" << fileName << "\"\r\n";
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body << "Content-Type: application/octet-stream\r\n\r\n" ;
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return std::move(body);
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}
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HttpBufferBody::HttpBufferBody(Buffer::Ptr buffer) {
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_buffer = std::move(buffer);
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}
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ssize_t HttpBufferBody::remainSize() {
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return _buffer ? _buffer->size() : 0;
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}
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Buffer::Ptr HttpBufferBody::readData(size_t size) {
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return Buffer::Ptr(std::move(_buffer));
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}
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}//namespace mediakit
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