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441 lines
11 KiB
C++
441 lines
11 KiB
C++
#include "stdafx.h"
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#include "master_service.h"
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#include "http_servlet.h"
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#if defined(_WIN32) || defined(_WIN64)
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#include <process.h>
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#endif
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static acl::atomic_long __counter = 0;
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http_servlet::http_servlet(acl::socket_stream* stream, acl::session* session)
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: HttpServlet(stream, session)
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, uploading_(false)
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, req_(NULL)
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, res_(NULL)
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, content_length_(0)
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, read_length_(0)
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, mime_(NULL)
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, fsize1_(-1)
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, fsize2_(-1)
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, fsize3_(-1)
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{
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handlers_["/upload"] = &http_servlet::onUpload;
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}
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http_servlet::~http_servlet(void)
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{
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}
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bool http_servlet::doError(request_t&, response_t& res)
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{
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res.setStatus(400);
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res.setContentType("text/xml; charset=utf-8");
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// 发送 http 响应头
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if (!res.sendHeader()) {
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return false;
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}
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// 发送 http 响应体
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acl::string buf;
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buf.format("<root error='some error happened!' />\r\n");
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(void) res.getOutputStream().write(buf);
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return false;
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}
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bool http_servlet::doOther(request_t&, response_t& res, const char* method)
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{
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res.setStatus(400);
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res.setContentType("text/xml; charset=utf-8");
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// 发送 http 响应头
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if (!res.sendHeader()) {
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return false;
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}
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// 发送 http 响应体
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acl::string buf;
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buf.format("<root error='unkown request method %s' />\r\n", method);
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(void) res.getOutputStream().write(buf);
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return false;
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}
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// 业务逻辑入口
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bool http_servlet::run(void)
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{
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// 如果正在读取客户端上传的数据，则进入上传处理过程
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if (uploading_) {
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if (req_ == NULL) {
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logger_error("req_ null");
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return false;
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}
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if (res_ == NULL) {
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logger_error("res_ null");
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return false;
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}
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return doUpload(*req_, *res_);
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}
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// 否则，走正常的HTTP处理流程，doGet/doPost 将会被调用
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else {
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return doRun();
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}
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}
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bool http_servlet::doGet(request_t& req, response_t& res)
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{
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return doPost(req, res);
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}
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bool http_servlet::doPost(request_t& req, response_t& res)
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{
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const char* path = req.getPathInfo();
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handler_t handler = path && *path ? handlers_[path] : NULL;
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return handler ? (this->*handler)(req, res) : onPage(req, res);
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}
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// 缺省 HTTP 请求，将 upload.html 页面返回给 HTTP 客户端
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bool http_servlet::onPage(request_t& req, response_t& res)
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{
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res.setContentType("text/html; charset=utf-8") // 设置响应字符集
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.setKeepAlive(req.isKeepAlive()) // 设置是否保持长连接
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.setContentEncoding(true) // 自动支持压缩传输
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.setChunkedTransferEncoding(true); // 采用 chunk 传输方式
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const char* page_html = "upload.html";
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acl::string buf;
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if (!acl::ifstream::load(page_html, &buf)) {
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buf.format("load %s error %s", page_html, acl::last_serror());
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}
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res.setContentLength(buf.size());
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return res.write(buf) && res.write(NULL, 0);
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}
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bool http_servlet::onUpload(request_t& req, response_t& res)
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{
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res.setContentType("text/xml; charset=utf-8") // 设置响应字符集
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.setKeepAlive(req.isKeepAlive()) // 设置是否保持长连接
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.setContentEncoding(true) // 自动支持压缩传输
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.setChunkedTransferEncoding(true); // 采用 chunk 传输方式
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// 获得 HTTP 请求的数据类型，正常的参数类型，即 name&value 方式
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// 还是 MIME 数据类型，还是数据流类型
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acl::http_request_t request_type = req.getRequestType();
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if (request_type != acl::HTTP_REQUEST_MULTIPART_FORM) {
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logger_warn("should be acl::HTTP_REQUEST_MULTIPART_FORM");
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return onPage(req, res);
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}
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// 先获得 Content-Type 对应的 http_ctype 对象
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mime_ = req.getHttpMime();
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if (mime_ == NULL) {
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logger_error("http_mime null");
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return onPage(req, res);
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}
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// 获得数据体的长度
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content_length_ = req.getContentLength();
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if (content_length_ <= 0) {
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logger_error("body empty");
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return onPage(req, res);
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}
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acl::string path;
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long long n = ++__counter;
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long long i = __counter.value();
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printf("i=%lld, n=%lld\r\n", i, n);
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#if defined(_WIN32) || defined(_WIN64)
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path.format("%s\\mime_file.%u.%lld",
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var_cfg_var_path, (unsigned) _getpid(), n);
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#else
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path.format("%s/mime_file.%u.%lld",
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var_cfg_var_path, (unsigned) getpid(), n);
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#endif
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acl::meter_time(__FUNCTION__, __LINE__, "begin");
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if (fp_.open_write(path)) {
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// 设置原始文件存入路径
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mime_->set_saved_path(path);
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req_ = &req;
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res_ = &res;
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uploading_ = true;
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// 直接返回，从而触发异步读 HTTP 数据体过程
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return true;
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}
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logger_error("open %s error %s", path.c_str(), acl::last_serror());
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return doReply(req, res, "open file error");
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}
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void http_servlet::reset(void)
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{
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uploading_ = false;
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req_ = NULL;
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res_ = NULL;
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content_length_ = 0;
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read_length_ = 0;
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mime_ = NULL;
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fp_.close();
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param1_.clear();
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param2_.clear();
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param3_.clear();
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file1_.clear();
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file2_.clear();
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file3_.clear();
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fsize1_ = -1;
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fsize2_ = -1;
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fsize3_ = -1;
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}
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bool http_servlet::doUpload(request_t& req, response_t& res)
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{
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// 当未读完数据体时，需要异步读 HTTP 请求数据体
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if (content_length_ > read_length_) {
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if (!upload(req, res)) {
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return false;
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}
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}
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// 还没有读完上传的数据，需要返回，异步等待可读
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if (content_length_ > read_length_) {
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return true;
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}
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// 当已经读完 HTTP 请求数据体时，则开始分析上传的数据
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bool ret = parse(req, res);
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// 处理完毕，需重置 HTTP 会话状态，以便于处理下一个 HTTP 请求
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reset();
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acl::meter_time(__FUNCTION__, __LINE__, "end");
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return ret;
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}
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#if 0
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bool http_servlet::upload(request_t& req, response_t& res)
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{
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// 获得输入流
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acl::istream& in = req.getInputStream();
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acl::string buf(8193);
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bool finish = false;
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//logger(">>>>>>>>>>read: %lld, total: %lld<<<<<",
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// read_length_, content_length_);
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// 读取 HTTP 客户端请求数据
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while (content_length_ > read_length_) {
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if (!in.read_peek(buf, true)) {
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break;
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}
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#if 0
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printf(">>>size: %ld, space: %ld\r\n",
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(long) buf.size(), (long) buf.capacity());
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#endif
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if (fp_.write(buf) == -1) {
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logger_error("write error %s", acl::last_serror());
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(void) doReply(req, res, "write error");
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return false;
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}
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read_length_ += buf.size();
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// 将读得到的数据输入至解析器进行解析
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// 如果再读到多余数据，可以直接丢掉，不必再放入 mime 解析器中
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if (!finish && mime_->update(buf, buf.size())) {
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finish = true;
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}
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}
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if (in.eof()) {
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logger_error("read error from http client");
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return false;
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}
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return true;
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}
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#else
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bool http_servlet::upload(request_t& req, response_t& res)
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{
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// 获得输入流
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acl::istream& in = req.getInputStream();
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char buf[8192];
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bool finish = false;
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//logger(">>>>>>>>>>read: %lld, total: %lld<<<<<",
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// read_length_, content_length_);
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// 读取 HTTP 客户端请求数据
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while (content_length_ > read_length_) {
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int ret = in.read_peek(buf, sizeof(buf));
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if (ret <= 0) {
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break;
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}
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//printf(">>>size: %d\r\n", ret);
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if (fp_.write(buf, ret) == -1) {
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logger_error("write error %s", acl::last_serror());
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(void) doReply(req, res, "write error");
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return false;
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}
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read_length_ += (size_t) ret;
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// 将读得到的数据输入至解析器进行解析
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// 如果再读到多余数据，可以直接丢掉，不必再放入 mime 解析器中
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if (!finish && mime_->update(buf, (size_t) ret)) {
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finish = true;
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}
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}
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if (in.eof()) {
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logger_error("read error from http client");
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return false;
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}
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return true;
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}
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#endif
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bool http_servlet::parse(request_t& req, response_t& res)
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{
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const char* ptr = req.getParameter("name1");
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if (ptr) {
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param1_ = ptr;
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}
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ptr = req.getParameter("name2");
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if (ptr) {
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param2_ = ptr;
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}
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ptr = req.getParameter("name3");
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if (ptr) {
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param3_ = ptr;
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}
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acl::string path;
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// 遍历所有的 MIME 结点，找出其中为文件结点的部分进行转储
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const std::list<acl::http_mime_node*>& nodes = mime_->get_nodes();
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std::list<acl::http_mime_node*>::const_iterator cit = nodes.begin();
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for (; cit != nodes.end(); ++cit) {
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const char* name = (*cit)->get_name();
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if (name == NULL) {
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continue;
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}
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acl::http_mime_t mime_type = (*cit)->get_mime_type();
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if (mime_type == acl::HTTP_MIME_FILE) {
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const char* filename = (*cit)->get_filename();
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if (filename == NULL) {
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logger("filename null");
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continue;
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}
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// 有的浏览器（如IE）上传文件时会带着文件路径，所以
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// 需要先将路径去掉
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filename = acl_safe_basename(filename);
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#if defined(_WIN32) || defined(_WIN64)
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path.format("%s\\%s", var_cfg_var_path, filename);
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#else
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path.format("%s/%s", var_cfg_var_path, filename);
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#endif
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(void) (*cit)->save(path.c_str());
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if (strcmp(name, "file1") == 0) {
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file1_ = filename;
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fsize1_ = get_fsize(var_cfg_var_path, filename);
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} else if (strcmp(name, "file2") == 0) {
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file2_ = filename;
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fsize2_ = get_fsize(var_cfg_var_path, filename);
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} else if (strcmp(name, "file3") == 0) {
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file3_ = filename;
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fsize3_ = get_fsize(var_cfg_var_path, filename);
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}
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}
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}
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// 查找上载的某个文件并转储
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const acl::http_mime_node* node = mime_->get_node("file1");
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if (node && node->get_mime_type() == acl::HTTP_MIME_FILE) {
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ptr = node->get_filename();
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if (ptr) {
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// 有的浏览器（如IE）上传文件时会带着文件路径，所以
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// 需要先将路径去掉
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ptr = acl_safe_basename(ptr);
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#if defined(_WIN32) || defined(_WIN64)
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path.format("%s\\1_%s", var_cfg_var_path, ptr);
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#else
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path.format("%s/1_%s", var_cfg_var_path, ptr);
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#endif
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(void) node->save(path.c_str());
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}
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}
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return doReply(req, res, "OK");
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}
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bool http_servlet::doReply(request_t& req, response_t& res, const char* info)
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{
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// 创建 xml 格式的数据体
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acl::xml1 body;
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body.get_root().add_child("root", true)
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.add_child("content_type", true)
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.add_attr("type", (int) req.getRequestType())
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.get_parent()
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.add_child("info", true)
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.set_text(info)
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.get_parent()
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.add_child("params", true)
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.add_child("param", true)
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.add_attr("name1", param1_)
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.get_parent()
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.add_child("param", true)
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.add_attr("name2", param2_)
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.get_parent()
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.add_child("param", true)
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.add_attr("name3", param3_)
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.get_parent()
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.add_child("files", true)
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.add_child("file", true)
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.add_attr("filename", file1_)
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.add_attr("fsize", fsize1_)
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.get_parent()
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.add_child("file", true)
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.add_attr("filename", file2_)
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.add_attr("fsize", fsize2_)
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.get_parent()
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.add_child("file", true)
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.add_attr("filename", file3_)
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.add_attr("fsize", fsize3_);
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acl::string buf;
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body.build_xml(buf);
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logger(">>%s<<", buf.c_str());
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return res.write(buf) && res.write(NULL, 0);
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}
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long long http_servlet::get_fsize(const char* dir, const char* filename)
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{
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acl::string path;
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#if defined(_WIN32) || defined(_WIN64)
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path.format("%s\\%s", dir, filename);
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#else
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path.format("%s/%s", dir, filename);
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#endif
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acl::ifstream in;
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if (in.open_read(path) == false) {
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logger_error("open %s error %s", path.c_str(), acl::last_serror());
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return -1;
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}
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return in.fsize();
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}
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