336 lines
9.5 KiB
C++
336 lines
9.5 KiB
C++
/*
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PIP - Platform Independent Primitives
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Class for send and receive files and directories via PIBaseTransfer
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Andrey Bychkov work.a.b@yandex.ru
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "pifiletransfer.h"
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const char PIFileTransfer::sign[] = {'P', 'F', 'T'};
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PIFileTransfer::PIFileTransfer() {
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for (uint i = 0; i < sizeof(sign); i++)
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pftheader.sig[i] = sign[i];
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pftheader.version = __PIFILETRANSFER_VERSION;
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pftheader.session_id = 0;
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pftheader.step = pft_None;
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dir = PIDir::current();
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started_ = scanning = false;
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bytes_file_all = bytes_file_cur = 0;
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CONNECT1(void, bool, this, sendFinished, this, send_finished);
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CONNECT1(void, bool, this, receiveFinished, this, receive_finished);
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}
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PIFileTransfer::~PIFileTransfer() {
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stop();
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work_file.close();
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}
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bool PIFileTransfer::send(const PIFile & file) {
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return send(file.path());
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}
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bool PIFileTransfer::send(const PIString & file) {
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return send(PIVector<PIFile::FileInfo>() << PIFile::fileInfo(file));
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}
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bool PIFileTransfer::send(const PIStringList & files) {
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PIVector<PIFile::FileInfo> fil;
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piForeachC(PIString & file, files)
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fil << PIFile::fileInfo(file);
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return send(fil);
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}
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bool PIFileTransfer::send(PIVector<PIFile::FileInfo> entries) {
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started_ = true;
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PIVector<PFTFileInfo> allEntries;
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for (int i = 0; i < entries.size_s(); i++) {
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allEntries << PFTFileInfo(entries[i]);
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allEntries.back().dest_path = entries[i].name();
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if (entries[i].isDir()) {
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cur_file_string = "scanning ... ";
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scan_dir.setDir(entries[i].path);
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scanning = true;
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PIVector<PIFile::FileInfo> fls = scan_dir.allEntries();
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scanning = false;
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scan_dir.up();
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// piCout << "files rel to" << d.absolutePath();
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for (uint j = 0; j < fls.size(); j++) {
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allEntries << PFTFileInfo(fls[j]);
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allEntries.back().dest_path = scan_dir.relative(fls[j].path);
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// piCout << " abs path" << fls[j].path;
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// piCout << " rel path" << allEntries.back().dest_path;
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}
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}
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}
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return sendFiles(allEntries);
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}
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bool PIFileTransfer::sendFiles(const PIVector<PFTFileInfo> & files) {
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files_ = files;
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PIStringList names;
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// piCoutObj << "prepare to send" << files_.size() << "files";
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for (int i = 0; i < files_.size_s(); i++) {
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if (names.contains(files_[i].path)) {
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files_.remove(i);
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--i;
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} else
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names << files_[i].path;
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if (files_[i].isDir()) files_[i].size = 0;
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// piCout << "prepare" << i << files_[i].path << files_[i].dest_path << files_[i].name();
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}
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randomize();
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step_mutex.lock();
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pftheader.session_id = randomi();
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sendFilesStarted();
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cur_file_string = "build session";
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desc.clear();
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desc << files_;
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pftheader.step = pft_Description;
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buildSession(PIVector<Part>() << Part(0, desc.size()));
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cur_file_string = "";
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step_mutex.unlock();
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if (!send_process()) {
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sendFilesFinished(false);
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started_ = false;
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return false;
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}
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step_mutex.lock();
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pftheader.step = pft_Data;
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PIVector<Part> pts;
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for (int i = 0; i < files_.size_s(); i++) {
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pts << Part(i + 1, files_[i].size);
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}
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buildSession(pts);
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step_mutex.unlock();
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bool ok = send_process();
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sendFilesFinished(ok);
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started_ = false;
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return ok;
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}
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void PIFileTransfer::processFile(int id, ullong start, PIByteArray & data) {
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// piCout << "processFile" << id << files_.size();
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PFTFileInfo fi = files_[id - 1];
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bytes_file_all = fi.size;
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bytes_file_cur = start;
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cur_file_string = fi.dest_path;
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PIString path = dir.absolutePath() + dir.separator + fi.dest_path;
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// piCout << "receive" << path << fi.size << data.size();
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if (fi.isDir()) {
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// piCoutObj << "make dir" << fi.entry.path;
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if (!PIDir::make(path)) {
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cur_file_string = "Error: While create directory \"" + path + "\"";
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piCoutObj << cur_file_string;
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stopReceive();
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return;
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}
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}
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if (fi.isFile()) {
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if (work_file.path() != path || !work_file.isOpened()) {
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// piCout << "file close";
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work_file.close();
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// piCout << "new file" << path << work_file.path() << work_file.isOpened();
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if (!work_file.open(path, PIIODevice::ReadWrite)) {
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cur_file_string = "Error: While open file \"" + path + "\"";
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piCoutObj << cur_file_string;
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stopReceive();
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return;
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}
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PIFile::applyFileInfo(path, fi);
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if (work_file.size() > fi.size) {
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// piCoutObj << "error size" << work_file.size() << fi.size;
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work_file.clear();
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work_file.resize(fi.size);
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// piCoutObj << "correct size" << work_file.size() << fi.size;
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}
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}
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// piCoutObj << "write file" << path << work_file.path() << work_file.size() << fi.entry.size << work_file.pos() << fi.fstart <<
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// fi.fsize;
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if (work_file.size() < (llong)start) {
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// piCoutObj << "error pos size" << work_file.pos() << fi.fstart;
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work_file.resize(start);
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// piCoutObj << "correct pos size" << work_file.pos() << fi.fstart;
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}
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if (work_file.size() > fi.size) {
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piCoutObj << "****** error size" << work_file.size() << fi.size;
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work_file.clear();
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work_file.resize(fi.size);
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piCoutObj << "****** correct size" << work_file.size() << fi.size;
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}
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// if (fi.fstart != work_file.pos()) piCoutObj << "error pos" << work_file.pos() << fi.fstart;
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work_file.seek(start);
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int rs = work_file.write(data.data(), data.size());
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if (rs != data.size_s()) {
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cur_file_string = "Error: While write file \"" + fi.path + "\" (must " + PIString::fromNumber(data.size()) + ", but write " +
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PIString::fromNumber(rs) + ")";
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piCoutObj << cur_file_string;
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stopReceive();
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return;
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}
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}
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}
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PIByteArray PIFileTransfer::buildPacket(Part p) {
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// piCoutObj << "Step" << pftheader.step;
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// piCoutObj << "session id" << pftheader.session_id;
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PIByteArray ba;
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switch (pftheader.step) {
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case pft_None: stopSend(); return PIByteArray();
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case pft_Description:
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ba.resize(p.size);
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memcpy(ba.data(), desc.data(p.start), p.size);
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return ba;
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case pft_Data:
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// piCout << "send data" << p.id << files_.size();
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PIFile::FileInfo fi = files_[p.id - 1];
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if (fi.isFile()) {
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// piCout << "send file" << fi.name() << fi.size;
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PIString path = fi.path;
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if (work_file.path() != path || !work_file.isOpened()) {
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if (!work_file.open(path, PIIODevice::ReadOnly)) {
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break_ = true;
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cur_file_string = "Error: While open file \"" + fi.path + "\"";
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piCoutObj << cur_file_string;
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stopSend();
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return PIByteArray();
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}
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}
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work_file.seek(p.start);
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ba.resize(p.size);
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int rs = work_file.read(ba.data(), ba.size());
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if ((llong)rs != (llong)p.size) {
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break_ = true;
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cur_file_string = "Error: While read file \"" + fi.path + "\" (must " + PIString::fromNumber(p.size) + ", but read " +
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PIString::fromNumber(rs) + ")";
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piCoutObj << cur_file_string;
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stopSend();
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return PIByteArray();
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}
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}
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cur_file_string = fi.path;
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bytes_file_all = fi.size;
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bytes_file_cur = p.start;
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return ba;
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}
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return ba;
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}
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void PIFileTransfer::receivePart(PIBaseTransfer::Part fi, PIByteArray ba, PIByteArray pheader) {
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PFTHeader h;
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// piCout << pheader.size() << sizeof(PFTHeader);
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pheader >> h;
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// piCout << h.session_id;
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PIMutexLocker ml(step_mutex);
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StepType st = (StepType)h.step;
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pftheader.step = st;
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if (!h.check_sig()) {
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cur_file_string = "Error: Check signature: File Transfer incompatable or invalid version!";
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piCoutObj << cur_file_string;
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stopReceive();
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return;
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}
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switch (st) {
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case pft_None: break;
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case pft_Description:
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pftheader.session_id = h.session_id;
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if (desc.size() < fi.start + fi.size) desc.resize(fi.start + fi.size);
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memcpy(desc.data(fi.start), ba.data(), ba.size_s());
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break;
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case pft_Data:
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if (h.session_id == pftheader.session_id)
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processFile(fi.id, fi.start, ba);
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else
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stopReceive();
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break;
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default: break;
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}
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}
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PIString PIFileTransfer::curFile() const {
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PIString s = cur_file_string;
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if (scanning) return s + scan_dir.scanDir();
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return s;
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}
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PIByteArray PIFileTransfer::customHeader() {
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PIByteArray ba;
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ba << pftheader;
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return ba;
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}
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void PIFileTransfer::beginReceive() {
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if (pftheader.step == pft_None) {
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files_.clear();
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// piCoutObj << "start receive"
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started_ = true;
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receiveFilesStarted();
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}
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}
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void PIFileTransfer::receive_finished(bool ok) {
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step_mutex.lock();
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StepType st = (StepType)pftheader.step;
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step_mutex.unlock();
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if (st == pft_Description) {
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bool user_ok = true;
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if (ok) {
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// piCoutObj << desc.size() << PICoutManipulators::Hex << desc;
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desc >> files_;
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// piCoutObj << files_;
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PIStringList files;
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piForeachC(PFTFileInfo & fi, files_)
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files << fi.dest_path;
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pause();
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receiveFilesRequest(files, bytesAll(), &user_ok);
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}
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if (!ok || !user_ok) {
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pftheader.session_id--;
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piCoutObj << "receive aborted";
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receiveFilesFinished(false);
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started_ = false;
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} else
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resume();
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}
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if (st == pft_Data) {
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// piCoutObj << "file close";
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work_file.close();
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receiveFilesFinished(ok);
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started_ = false;
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}
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}
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void PIFileTransfer::send_finished(bool ok) {
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// piCoutObj << "file close";
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if (pftheader.step == pft_Data) {
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work_file.close();
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}
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}
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