├── TFTP_Client
    ├── icon.ico
    ├── images
    │   ├── clear.png
    │   ├── icon.png
    │   ├── save.png
    │   ├── download.png
    │   ├── openFile.png
    │   ├── upload.png
    │   └── images.qrc
    ├── main.cpp
    ├── util.h
    ├── TFTP_Client.pro
    ├── mainwindow.h
    ├── workthread.h
    ├── def.h
    ├── util.cpp
    ├── mainwindow.cpp
    ├── mainwindow.ui
    ├── workthread.cpp
    └── TFTP_Client.pro.user
└── Readme.md


/TFTP_Client/icon.ico:
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https://raw.githubusercontent.com/BIIIANG/HUST-CSE-ComputerTelecommunicationsAndNetwork-TFTP-Client/HEAD/TFTP_Client/icon.ico


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/TFTP_Client/images/clear.png:
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https://raw.githubusercontent.com/BIIIANG/HUST-CSE-ComputerTelecommunicationsAndNetwork-TFTP-Client/HEAD/TFTP_Client/images/clear.png


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/TFTP_Client/images/icon.png:
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https://raw.githubusercontent.com/BIIIANG/HUST-CSE-ComputerTelecommunicationsAndNetwork-TFTP-Client/HEAD/TFTP_Client/images/icon.png


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/TFTP_Client/images/save.png:
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https://raw.githubusercontent.com/BIIIANG/HUST-CSE-ComputerTelecommunicationsAndNetwork-TFTP-Client/HEAD/TFTP_Client/images/save.png


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/TFTP_Client/images/download.png:
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https://raw.githubusercontent.com/BIIIANG/HUST-CSE-ComputerTelecommunicationsAndNetwork-TFTP-Client/HEAD/TFTP_Client/images/download.png


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/TFTP_Client/images/openFile.png:
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https://raw.githubusercontent.com/BIIIANG/HUST-CSE-ComputerTelecommunicationsAndNetwork-TFTP-Client/HEAD/TFTP_Client/images/openFile.png


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/TFTP_Client/images/upload.png:
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https://raw.githubusercontent.com/BIIIANG/HUST-CSE-ComputerTelecommunicationsAndNetwork-TFTP-Client/HEAD/TFTP_Client/images/upload.png


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/TFTP_Client/main.cpp:
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 1 | #include "mainwindow.h"
 2 | 
 3 | #include <QApplication>
 4 | 
 5 | int main(int argc, char *argv[])
 6 | {
 7 |     QApplication a(argc, argv);
 8 |     MainWindow w;
 9 |     w.show();
10 |     return a.exec();
11 | }
12 | 


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/TFTP_Client/images/images.qrc:
--------------------------------------------------------------------------------
 1 | <RCC>
 2 |     <qresource prefix="/">
 3 |         <file>clear.png</file>
 4 |         <file>download.png</file>
 5 |         <file>openFile.png</file>
 6 |         <file>save.png</file>
 7 |         <file>upload.png</file>
 8 |         <file>icon.png</file>
 9 |     </qresource>
10 | </RCC>
11 | 


--------------------------------------------------------------------------------
/Readme.md:
--------------------------------------------------------------------------------
 1 | ## 项目环境
 2 | 
 3 | - Qt Creator 5.0.0 Based on Qt 5.15.2 (MSVC 2019, 64 bit)
 4 | - Kit：QT 6.0.3 MSVC2019 64bit
 5 | 
 6 | ## 支持
 7 | 
 8 | - RFC1350
 9 | - RFC2347中的扩展选项（TFTP Option Extension）
10 | - RFC2348中的块大小可选项（TFTP Blocksize Option）
11 | - RFC2349中的超时时间可选项和文件大小可选项（TFTP Timeout Interval and Transfer Size Options）


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/TFTP_Client/util.h:
--------------------------------------------------------------------------------
 1 | #ifndef UTIL_H
 2 | #define UTIL_H
 3 | 
 4 | #include "def.h"
 5 | 
 6 | #define LF '\n'
 7 | #define CR '\r'
 8 | #define NUL '\0'
 9 | #define PLATFORM_WINDOWS 1
10 | #define PLATFORM_LINUX 2
11 | 
12 | #define FULLSTRLEN(str) (strlen(str) + 1)
13 | #define FULLNUMLEN(num) (numlen(num) + 1)
14 | 
15 | int appendMsg(char* buf, rsize_t bufferCount, int* offset, const char* format, ...);
16 | int getMsg(char* buf, rsize_t bufferCount, const char* source, int* offset);
17 | int getFileSize(const char* fileName);
18 | int numlen(int num);
19 | 
20 | int encodeNetascii(const char *fileName);
21 | int decodeNetascii(const char *fileName, int platform);
22 | 
23 | #endif // UTIL_H
24 | 


--------------------------------------------------------------------------------
/TFTP_Client/TFTP_Client.pro:
--------------------------------------------------------------------------------
 1 | QT       += core gui
 2 | RC_ICONS = icon.ico
 3 | 
 4 | greaterThan(QT_MAJOR_VERSION, 4): QT += widgets \
 5 |     network \
 6 |     core5compat
 7 | 
 8 | CONFIG += c++11
 9 | 
10 | # You can make your code fail to compile if it uses deprecated APIs.
11 | # In order to do so, uncomment the following line.
12 | #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
13 | 
14 | SOURCES += \
15 |     main.cpp \
16 |     mainwindow.cpp \
17 |     util.cpp \
18 |     workthread.cpp
19 | 
20 | HEADERS += \
21 |     def.h \
22 |     mainwindow.h \
23 |     util.h \
24 |     workthread.h
25 | 
26 | FORMS += \
27 |     mainwindow.ui
28 | 
29 | # 添加库文件
30 | LIBS += -L"C:\Program Files (x86)\Windows Kits\10\Lib\10.0.19041.0\um\x64" \
31 |         -lws2_32
32 | 
33 | # Default rules for deployment.
34 | qnx: target.path = /tmp/$${TARGET}/bin
35 | else: unix:!android: target.path = /opt/$${TARGET}/bin
36 | !isEmpty(target.path): INSTALLS += target
37 | 
38 | RESOURCES += \
39 |     images/images.qrc
40 | 
41 | DISTFILES += \
42 |     images/icon.png
43 | 


--------------------------------------------------------------------------------
/TFTP_Client/mainwindow.h:
--------------------------------------------------------------------------------
 1 | #ifndef MAINWINDOW_H
 2 | #define MAINWINDOW_H
 3 | 
 4 | #include <QMainWindow>
 5 | #include <QDateTime>
 6 | #include <QFileDialog>
 7 | #include <QMessageBox>
 8 | #include <QHostAddress>
 9 | #include <QProcessEnvironment>
10 | 
11 | #include "def.h"
12 | #include "util.h"
13 | #include "workthread.h"
14 | 
15 | QT_BEGIN_NAMESPACE
16 | namespace Ui { class MainWindow; }
17 | QT_END_NAMESPACE
18 | 
19 | class MainWindow : public QMainWindow
20 | {
21 |     Q_OBJECT
22 | 
23 | public:
24 |     MainWindow(QWidget *parent = nullptr);
25 |     ~MainWindow();
26 | 
27 | signals:
28 |     void sendReadFileArgs(SOCKET sock, SOCKADDR_IN servAddr, const char* reFile, const char* loFile, int mode, EXTENDED ext, int oper);
29 | 
30 | public slots:
31 | 
32 | private:
33 |     Ui::MainWindow *ui;
34 | 
35 |     EXTENDED extended = { 0 };
36 | 
37 |     unsigned short blkSize = TFTP_DEFAULT_BLOCK_SIZE;
38 | 
39 |     int serverPort, mode = MODE_OCTET;
40 |     SOCKET socketFd = INVALID_SOCKET;
41 |     SOCKADDR_IN serverAddr = { 0 };
42 |     int serverAddrLen = sizeof(serverAddr);
43 | 
44 |     const char *remoteFile, *localFile, *serverIP;
45 |     std::string remoteFileStd, localFileStd, serverIPStd, remoteFileGB, localFileGB;
46 |     QByteArray remoteFileByteArray, localFileByteArray;
47 | 
48 |     WorkThread *workThread = new WorkThread();
49 | 
50 |     int checkArgs(int op);
51 | 
52 |     void setModuleEnabled(bool isEnabled);
53 | 
54 |     QTimer *timer = new QTimer();
55 | 
56 | };
57 | #endif // MAINWINDOW_H
58 | 


--------------------------------------------------------------------------------
/TFTP_Client/workthread.h:
--------------------------------------------------------------------------------
 1 | #ifndef WORDTHREAD_H
 2 | #define WORDTHREAD_H
 3 | 
 4 | #include <QThread>
 5 | #include <QTimer>
 6 | #include <QTextCodec>
 7 | #include <iostream>
 8 | 
 9 | #include "def.h"
10 | #include "util.h"
11 | 
12 | class WorkThread : public QThread
13 | {
14 |     Q_OBJECT
15 | 
16 | public:
17 |     explicit WorkThread(QObject *parent = nullptr);
18 | 
19 | signals:
20 |     void sendMsg(int code, QString msg);
21 |     void sendProcessBarMaximum(int max);
22 |     void sendProcessBarValue(int val);
23 |     void sendTSize(QString tsize);
24 |     void sendUploadSpeed(QString speed);
25 |     void sendDownloadSpeed(QString speed);
26 | 
27 | protected:
28 |     void run() override;
29 | 
30 | public slots:
31 |     void recvReadFileArgs(SOCKET sock, SOCKADDR_IN servAddr, const char* reFile, const char* loFile, int mode, EXTENDED ext, int oper);
32 |     void recvTimeOutSignal();
33 | 
34 | private:
35 | 
36 |     FILE* fp = NULL;
37 | 
38 |     // Packet need to use. 需要用到的Packet
39 |     PKG_DATA_ERROR_OACK rcvdPkt = { 0 }, dataPkt = { htons(OP_DATA), { 0 } };
40 |     PKG_ACK ackPkt = { htons(OP_ACK), 0 };
41 |     PKG_REQUEST reqPkt = {  0 , { 0 } };
42 | 
43 |     // Task arguments. 任务参数
44 |     int operation;
45 |     SOCKET socketFd = INVALID_SOCKET;
46 |     SOCKADDR_IN serverAddr = { 0 };
47 |     const char *remoteFile = NULL, *localFile = NULL;
48 |     int serverAddrLen = sizeof(serverAddr), mode = 0;
49 |     EXTENDED extended = { 0 };
50 | 
51 |     // Extended settings used. 实际使用的扩展参数
52 |     int tSize;
53 |     TIMEVAL tvTimeOut;
54 |     unsigned short blkSize, timeOut;
55 | 
56 |     // Statistical information. 统计信息
57 |     int reqMsgLen;
58 |     double percent = 0;
59 |     int bytesRecv, bytesSend, lastBytesRecv, lastBytesSend;
60 |     int totalRetransmitCount;
61 |     int fileSize;
62 |     WORD curBlock;
63 |     clock_t startTime, endTime;
64 | 
65 |     int checkArgs();
66 |     int openLocalFile();
67 |     int sendReqest();
68 | 
69 |     int recvFile();
70 |     int sendFile();
71 | 
72 |     int sendAck(WORD block);
73 |     int sendPkt(const char* buf, int len);
74 |     int recvPkt(char* buf, int len);
75 |     int getOptionFromOAckPkt(int rcvdSize);
76 | 
77 |     int waitForPkt(int timeOutMs, int &rcvdSize);
78 |     int waitForOACK(int timeOutMs, int &rcvdSize);
79 |     int waitForSpecificPkt(WORD block, int timeOutMs, int &rcvdSize, int pktType);
80 | 
81 |     void tftpTerminate(bool isSuccess);
82 | 
83 |     QTimer *timer;
84 | 
85 | };
86 | 
87 | #endif // WORDTHREAD_H
88 | 


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/TFTP_Client/def.h:
--------------------------------------------------------------------------------
  1 | #ifndef DEF_H
  2 | #define DEF_H
  3 | 
  4 | #include <stdio.h>
  5 | #include <WinSock2.h>
  6 | #include <WS2tcpip.h>
  7 | #include <sys/stat.h>
  8 | #include <io.h>
  9 | 
 10 | #include <QDebug>
 11 | 
 12 | #define SERV_PORT 69
 13 | 
 14 | #define OP_READ_REQ 1
 15 | #define OP_WRITE_REQ 2
 16 | #define OP_DATA 3
 17 | #define OP_ACK 4
 18 | #define OP_ERROR 5
 19 | #define OP_OACK 6
 20 | 
 21 | #define TFTP_DATA_PKT 3
 22 | #define TFTP_ACK_PKT 4
 23 | #define TFTP_ERROR_PKT 5
 24 | #define TFTP_OACK_PKT 6
 25 | 
 26 | #define MODE_NETASCII 1
 27 | #define MODE_OCTET 2
 28 | 
 29 | #define OP_SIZE 2
 30 | #define MODE_SIZE 2
 31 | #define BLOCK_SIZE 2
 32 | #define ERRCODE_SIZE 2
 33 | #define REQ_SIZE 512
 34 | #define ERROR_SIZE 512
 35 | #define TFTP_DEFAULT_BLOCK_SIZE 512
 36 | #define TFTP_MIN_BLOCK_SIZE 8
 37 | //#define TFTP_MAX_BLOCK_SIZE 65464  // RFC 2349
 38 | #define TFTP_MAX_BLOCK_SIZE 16384    // Tftpd64
 39 | 
 40 | #define RECV_LOOP_MAX 100000
 41 | #define TFTP_MAX_RETRANSMIT 10
 42 | #define RECV_TIMEOUT_SEC 0
 43 | #define RECV_TIMEOUT_USEC 1000000
 44 | #define TFTP_DEFAULT_TIMEOUT_SEC 2
 45 | #define TFTP_MIN_TIMEOUT_SEC 1
 46 | #define TFTP_MAX_TIMEOUT_SEC 255
 47 | 
 48 | #define TFTP_NO_ERROR 0
 49 | #define ERROR_INVALID_ARG -1
 50 | #define ERROR_TOO_LONG_REQUEST -11
 51 | #define ERROR_UNDEFINED_MODE -12
 52 | #define ERROR_OPENFILE_FAIL -13
 53 | #define ERROR_SEND_REQ_FAIL -14
 54 | #define ERROR_SOCKET_ERROR -15
 55 | #define ERROR_CONNECT_CLOSE -16
 56 | #define ERROR_WRONG_PKT -17
 57 | #define ERROR_SEND_ACK_FAIL -18
 58 | #define ERROR_FWRITE_FAIL -19
 59 | #define ERROR_UNEXPECTED_PKT -20
 60 | #define ERROR_RETRANSMIT_EQU -21
 61 | #define ERROR_RETRANSMIT_ACK -22
 62 | #define ERROR_RETRANSMIT_TOO_MUCH -23
 63 | #define TFTP_ERROR_TIMEOUT -24
 64 | #define ERROR_SEND_DATA_FAIL -25
 65 | #define ERROR_SELECT_SOCKET_ERROR -41
 66 | #define ERROR_SELECT_TIMEOUT -42
 67 | #define ERROR_SELECT_CONNECT_CLOSE -43
 68 | #define TFTP_ERROR_WRONG_PKT -61
 69 | #define TFTP_NOT_SUPPORT_EXT -62
 70 | 
 71 | #define TFTP_REFRESH_INTERVAL 1000  // 吞吐量刷新间隔(ms)
 72 | 
 73 | typedef struct {
 74 |     WORD op;
 75 |     char reqMsg[REQ_SIZE];
 76 | }PKG_REQUEST;
 77 | 
 78 | typedef struct {
 79 |     WORD op;
 80 |     union {
 81 |         WORD block;
 82 |         WORD errCode;
 83 |         char opMsg[2];
 84 |     };
 85 |     union {
 86 |         char data[TFTP_MAX_BLOCK_SIZE];
 87 |         char errMsg[ERROR_SIZE];
 88 |     };
 89 | }PKG_DATA_ERROR_OACK;
 90 | 
 91 | typedef struct {
 92 |     WORD op;
 93 |     WORD block;
 94 | }PKG_ACK;
 95 | 
 96 | typedef struct {
 97 |     bool isExtended;
 98 |     bool tsizeExist, blksizeExist, timeoutExist;
 99 |     int tsize, blksize, timeout;
100 | }EXTENDED;
101 | 
102 | #endif // DEF_H
103 | 
104 | 
105 | 


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/TFTP_Client/util.cpp:
--------------------------------------------------------------------------------
  1 | #include "util.h"
  2 | 
  3 | /**
  4 |  * RECEIVE ARGUMENTS LIKE sprintf TO APPEND MESSAGE TO THE BUF AND ALTER THE OFFSET
  5 |  * 接收可变参数，将字符串附加在BUF的指定位置并维护当前写到位置的偏移OFFSET
  6 |  * @buf         : pointer to string buffer 字符串缓冲区首指针
  7 |  * @bufferCount : max length of the buf 字符串缓冲区最大长度
  8 |  * @offset      : current position of the string 当前位置
  9 |  * @format,...  : format like sprintf 类似sprintf函数的可变格式参数
 10 |  * #return      : length of the message 信息长度
 11 |  */
 12 | int appendMsg(char* buf, rsize_t bufferCount, int* offset, const char* format, ...)
 13 | {
 14 |     va_list args;
 15 |     va_start(args, format);
 16 |     int ret = vsprintf_s(buf + *offset, bufferCount - *offset, format, args);
 17 |     va_end(args);
 18 |     *offset += ret + 1;
 19 |     return ret;
 20 | }
 21 | 
 22 | /**
 23 |  * READ MESSAGE FORM SOURCE DATA TO BUF AND ALTER THE OFFSET TO GET THE NEXT MESSAGE
 24 |  * 从SOURCE数据中读取一条信息到BUF中并维护下一条信息的开始偏移OFFSET
 25 |  * @buf         : pointer to string buffer 字符串缓冲区首指针
 26 |  * @bufferCount : max length of the buf 字符串缓冲区最大长度
 27 |  * @source      : source data 源数据
 28 |  * @offset      : position of the current message 当前信息的位置
 29 |  * #return      : length of the message 信息长度
 30 |  */
 31 | int getMsg(char* buf, rsize_t bufferCount, char const* source, int* offset)
 32 | {
 33 |     int ret = sprintf_s(buf, bufferCount, "%s", source + *offset);
 34 |     *offset += ret + 1;
 35 |     return ret;
 36 | }
 37 | 
 38 | /**
 39 |  * GET THE BYTE SIZE OF A FILE 获得一个文件的字节长度
 40 |  * @fileName : name of the file 文件名
 41 |  * #return   : the byte size of the file 该文件的字节长度
 42 |  */
 43 | int getFileSize(const char* fileName)
 44 | {
 45 |     struct stat statBuf;
 46 |     if (stat(fileName, &statBuf) != 0) { return -1; }
 47 |     return statBuf.st_size;
 48 | }
 49 | 
 50 | /**
 51 |  * GET THE LENGTH OF A DECIMAL NUMBER 获得一个十进制数的长度
 52 |  * @num    : the decimal number 十进制数
 53 |  * #return : the length 长度
 54 |  */
 55 | int numlen(int num)
 56 | {
 57 |     if (num == 0) { return 1; }
 58 |     int count = 0;
 59 |     for (; num != 0; num /= 10) { count++; }
 60 |     return count;
 61 | }
 62 | 
 63 | /**
 64 |  * ENCODE FILE TO NETASCII 将本地编码的文件转换为NETASCII编码文件
 65 |  * LF(0x0A) => CRLF(0x0D,0x0A)
 66 |  * CR(0x0D) => CRNUL(0x0D,0x00)
 67 |  * EXAMPLE.FILE => EXAMPLE.FILE.netascii
 68 |  * @fileName : name of the file to be encoded 需要进行编码的文件名
 69 |  * #return   : status code (-1 for fail, 0 for succeed) 状态码
 70 |  */
 71 | int encodeNetascii(const char *fileName) {
 72 |     FILE *fp = NULL, *tfp = NULL;
 73 |     char tempFileName[1024];
 74 |     strcpy_s(tempFileName, 1023, fileName);
 75 |     strcat_s(tempFileName, 1023, ".netascii");
 76 |     fopen_s(&fp, fileName, "rb");
 77 |     fopen_s(&tfp, tempFileName, "wb");
 78 |     if (fp == NULL || tfp == NULL) {
 79 |         if (fp) { fclose(fp); }
 80 |         if (fp) { fclose(tfp); }
 81 |         return -1;
 82 |     }
 83 | 
 84 |     int ch = fgetc(fp), lch = NUL;
 85 |     while (true) {
 86 |         if (ch == LF && lch != CR) { fputc(CR, tfp); }  // LF => CRLF
 87 |         else if (lch == CR && ch != LF && ch != NUL) { fputc(NUL, tfp); }   // CR => CRNUL
 88 |         else if (ch == EOF) { break; }
 89 |         fputc(ch, tfp);
 90 |         lch = ch;
 91 |         ch = fgetc(fp);
 92 |     }
 93 | 
 94 |     fclose(fp);
 95 |     fclose(tfp);
 96 |     return 0;
 97 | }
 98 | 
 99 | /**
100 |  * DECODE NETASCII TO LOCAL FORMAT 将NETASCII编码的文件转换为本地编码
101 |  * ON WINDOWS : CRLF => CRLF  CRNUL => CR
102 |  * ON LINUX   : CRLF => LF  CRNUL => CR
103 |  * EXAMPLE.FILE => EXAMPLE.FILE.local
104 |  * @fileName : name of the file to be decoded 需要进行解码的文件名
105 |  * #return   : status code (-1 for fail, 0 for succeed) 状态码
106 |  */
107 | int decodeNetascii(const char *fileName, int platform) {
108 |     FILE *fp = NULL, *tfp = NULL;
109 |     char tempFileName[1024];
110 |     strcpy_s(tempFileName, 1023, fileName);
111 |     strcat_s(tempFileName, 1023, ".local");
112 |     fopen_s(&fp, fileName, "rb");
113 |     fopen_s(&tfp, tempFileName, "wb");
114 |     if (fp == NULL || tfp == NULL) {
115 |         if (fp) { fclose(fp); }
116 |         if (fp) { fclose(tfp); }
117 |         return -1;
118 |     }
119 | 
120 |     int ch = 0, nch = 0;
121 |     while (true) {
122 |         ch = fgetc(fp);
123 |         if (ch == CR) {
124 |             nch = fgetc(fp);
125 |             if ( platform != PLATFORM_WINDOWS && nch == LF) { ch = LF; }
126 |             else if (nch == NUL) { ch = CR; }
127 |             else { fseek(fp, -1L, SEEK_CUR); }
128 |         } else if (ch == EOF) { break; }
129 |         fputc(ch, tfp);
130 |     }
131 | 
132 |     fclose(fp);
133 |     fclose(tfp);
134 |     return 0;
135 | }
136 | 


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/TFTP_Client/mainwindow.cpp:
--------------------------------------------------------------------------------
  1 | #include "mainwindow.h"
  2 | #include "ui_mainwindow.h"
  3 | 
  4 | MainWindow::MainWindow(QWidget *parent)
  5 |     : QMainWindow(parent)
  6 |     , ui(new Ui::MainWindow)
  7 | {
  8 |     ui->setupUi(this);
  9 | 
 10 |     // init modules 初始化UI组件
 11 |     ui->ProgressBar->setRange(0,1);
 12 |     ui->ProgressBar->setValue(0);
 13 |     ui->ModeComboBox->addItem("OCTET");
 14 |     ui->ModeComboBox->addItem("NETASCII");
 15 |     ui->BreakBtn->setEnabled(false);        // waiting to be done 待完成
 16 | 
 17 |     // for debug 测试用
 18 | //    ui->LocalFileLineEdit->setText("H:\\测试用例1.jpg");
 19 | //    ui->RemoteFileLineEdit->setText("测试用例1.jpg");
 20 | 
 21 | #ifdef WIN32
 22 |     // init WinSock 初始化WinSock
 23 |     WSADATA wsaData;
 24 |     int iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
 25 |     if (iResult != 0) { QMessageBox::warning(this, "Init WinSock Fail.", "Init socket fail."); exit(-1); }
 26 |     if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { WSACleanup(); exit(-1); }
 27 | #endif
 28 | 
 29 |     // select local file 选择本地文件
 30 |     connect(ui->dirBtn,&QPushButton::clicked, this, [=]() {
 31 |         QString desktopPath = QProcessEnvironment::systemEnvironment().value("USERPROFILE") + "\\desktop";
 32 |         QString localFilePath = QFileDialog::getSaveFileName(this, "请选择本地文件", desktopPath);
 33 |         if(!localFilePath.isEmpty()) { ui->LocalFileLineEdit->setText(localFilePath); }
 34 |     });
 35 |     // receive file 接收文件
 36 |     connect(ui->GetBtn, &QPushButton::clicked, this, [=]() {
 37 |         if (checkArgs(OP_READ_REQ) == TFTP_NO_ERROR) {
 38 |             timer->start(TFTP_REFRESH_INTERVAL);
 39 |             setModuleEnabled(false);
 40 |             serverAddr.sin_family = AF_INET;
 41 |             serverAddr.sin_port = htons(SERV_PORT);
 42 |             InetPtonA(AF_INET, serverIP, (void*)&serverAddr.sin_addr);
 43 |             socketFd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 44 |             if (socketFd == INVALID_SOCKET) { QMessageBox::warning(this, "Init Socket Fail.", "Init socket fail."); exit(-1); }
 45 |             emit sendReadFileArgs(socketFd, serverAddr, remoteFile, localFile, mode, extended, OP_READ_REQ);
 46 |             workThread->start();
 47 |         }
 48 |     });
 49 |     // send file 发送文件
 50 |     connect(ui->PutBtn, &QPushButton::clicked, this, [=]() {
 51 |         if (checkArgs(OP_WRITE_REQ) == TFTP_NO_ERROR) {
 52 |             timer->start(TFTP_REFRESH_INTERVAL);
 53 |             setModuleEnabled(false);
 54 |             serverAddr.sin_family = AF_INET;
 55 |             serverAddr.sin_port = htons(SERV_PORT);
 56 |             InetPtonA(AF_INET, serverIP, (void*)&serverAddr.sin_addr);
 57 |             if (mode == MODE_NETASCII) {    // encode to netascii
 58 |                 encodeNetascii(localFile);
 59 |                 localFileStd += ".netascii";
 60 |                 localFile = localFileStd.c_str();
 61 |                 QTextCodec *code = QTextCodec::codecForName("GB2312");
 62 |                 localFileByteArray = code->fromUnicode(localFile);
 63 |                 localFileGB = localFileByteArray.data();
 64 |                 localFile = localFileGB.c_str();
 65 |             }
 66 |             socketFd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 67 |             if (socketFd == INVALID_SOCKET) { QMessageBox::warning(this, "Init Socket Fail.", "Init socket fail."); exit(-1); }
 68 |             emit sendReadFileArgs(socketFd, serverAddr, remoteFile, localFile, mode, extended, OP_WRITE_REQ);
 69 |             workThread->start();
 70 |         }
 71 |     });
 72 |     connect(this, &MainWindow::sendReadFileArgs, workThread, &WorkThread::recvReadFileArgs);
 73 |     connect(workThread, &WorkThread::finished, this, [=]() {
 74 |         setModuleEnabled(true);
 75 |         timer->stop();
 76 |         if(socketFd != INVALID_SOCKET) { closesocket(socketFd); }
 77 |     });
 78 | 
 79 |     // set UI modules action 设置UI组件动作
 80 |     connect(workThread, &WorkThread::sendProcessBarMaximum, this, [=](int max) { ui->ProgressBar->setMaximum(max); });
 81 |     connect(workThread, &WorkThread::sendProcessBarValue, this, [=](int val) { ui->ProgressBar->setValue(val); });
 82 |     connect(workThread, &WorkThread::sendTSize, this, [=](QString tsize) { ui->tsizeLabel->setText(tsize); });
 83 |     connect(ui->tsizeCheckBox, &QCheckBox::stateChanged, this, [=](int state) { extended.tsizeExist = state == Qt::Checked ? true : false; });
 84 |     connect(ui->blksizeCheckBox, &QCheckBox::stateChanged, this, [=](int state) { extended.blksizeExist = state == Qt::Checked ? true : false; });
 85 |     connect(ui->timeoutCheckBox, &QCheckBox::stateChanged, this, [=](int state) { extended.timeoutExist = state == Qt::Checked ? true : false; });
 86 |     connect(ui->blksizeSpinBox, &QSpinBox::valueChanged, this, [=](int value) { extended.blksize = value; });
 87 |     connect(ui->timeoutSpinBox, &QSpinBox::valueChanged, this, [=](int value) { extended.timeout = value; });
 88 |     connect(ui->ModeComboBox, &QComboBox::currentIndexChanged, this, [=](int index) { mode = index == 0 ? MODE_OCTET : MODE_NETASCII; });
 89 | 
 90 |     ui->tsizeCheckBox->setCheckState(Qt::Checked);
 91 |     ui->blksizeCheckBox->setCheckState(Qt::Checked);
 92 |     extended.blksize = TFTP_DEFAULT_BLOCK_SIZE;
 93 |     extended.timeout = TFTP_DEFAULT_TIMEOUT_SEC;
 94 | 
 95 |     // real-time speed 实时吞吐量
 96 |     connect(timer, &QTimer::timeout, workThread, &WorkThread::recvTimeOutSignal);
 97 |     connect(workThread, &WorkThread::sendUploadSpeed, this, [=](QString speed) { ui->UploadLabel->setText(speed); });
 98 |     connect(workThread, &WorkThread::sendDownloadSpeed, this, [=](QString speed) { ui->DownloadLabel->setText(speed); });
 99 | 
100 |     // log 记录log和保存log
101 |     connect(workThread, &WorkThread::sendMsg, this, [=](int code, QString msg) {
102 |         QString fullMsg = QDateTime::currentDateTime().toString("[MM/dd hh:mm:ss.zzz]");
103 |         fullMsg += (code == TFTP_NO_ERROR ? " OK " : " ER ") + msg;
104 |         ui->LogTextBrowser->append(fullMsg);
105 |     });
106 |     connect(ui->ClearBtn, &QPushButton::clicked, this, [=]() { ui->LogTextBrowser->clear(); });
107 |     connect(ui->SaveBtn, &QPushButton::clicked, this, [=]() {
108 |         if(!ui->LogTextBrowser->toPlainText().isEmpty()) {
109 |             QString logFileName = "TFTP_log_" + QDateTime::currentDateTime().toString("yyyy_MM_dd_hh_mm_ss") + ".txt";
110 |             QFile file("./" + logFileName);
111 |             file.open(QIODevice::ReadWrite | QIODevice::Append);
112 |             QTextStream out(&file);
113 |             out << ui->LogTextBrowser->toPlainText();
114 |             file.close();
115 |             QMessageBox::information(this, "Save Log Success.", "Save log sucess as: \"" + logFileName + "\" in process directory.");
116 |         }
117 |         else {
118 |             QMessageBox::information(this, "Save Log Fail.", "Log is empty.");
119 |         }
120 |     });
121 | 
122 | }
123 | 
124 | MainWindow::~MainWindow() {
125 |     if(socketFd != INVALID_SOCKET) { closesocket(socketFd); }
126 | #ifdef WIN32
127 |     WSACleanup();
128 | #endif
129 |     delete ui;
130 | }
131 | 
132 | /**
133 |  * CHECK ARGUMENTS IN INPUT LABELS AND SHOW THE NOTICE MESSAGE 检查输入框内的参数并输出提示信息
134 |  * @op     : operation 操作
135 |  * #return : status code 状态码
136 |  */
137 | int MainWindow::checkArgs(int op) {
138 |     if (ui->ServerIPLineEdit->text().isEmpty()) {
139 |         QMessageBox::critical(this, "Server IP Error.", "Server IP missing. Please input the Server IP.");
140 |         return ERROR_INVALID_ARG;
141 |     }
142 | 
143 |     if (ui->ServerPortLineEdit->text().isEmpty()) {
144 |         QMessageBox::critical(this, "Server Port Error.", "Server port missing. Please input the Server port.");
145 |         return ERROR_INVALID_ARG;
146 |     }
147 | 
148 |     if (ui->LocalFileLineEdit->text().isEmpty()) {
149 |         QMessageBox::critical(this, "Local File Error.", "Local file missing. Please input the local file.");
150 |         return ERROR_INVALID_ARG;
151 |     }
152 | 
153 |     if (ui->RemoteFileLineEdit->text().isEmpty()) {
154 |         QMessageBox::critical(this, "Remote File Error.", "Remote file missing. Please input the Remote file.");
155 |         return ERROR_INVALID_ARG;
156 |     }
157 | 
158 |     QHostAddress *ip = new QHostAddress(ui->ServerIPLineEdit->text());
159 |     if (ip->isNull()) {
160 |         QMessageBox::critical(this, "Server IP Error.", "Wrong Server IP. Please input the Server IP again.");
161 |         return ERROR_INVALID_ARG;
162 |     }
163 |     serverIPStd = ui->ServerIPLineEdit->text().toStdString();
164 |     serverIP = serverIPStd.c_str();
165 | 
166 |     QTextCodec *code = QTextCodec::codecForName("GB2312");
167 | 
168 |     localFileStd = ui->LocalFileLineEdit->text().toStdString();
169 |     localFile = localFileStd.c_str();
170 |     localFileByteArray = code->fromUnicode(localFile);
171 |     localFileGB = localFileByteArray.data();
172 |     localFile = localFileGB.c_str();
173 |     if (op == OP_READ_REQ && _access(localFile, 0) != -1) {
174 |         QMessageBox::StandardButton res = QMessageBox::question(this, "Local File Warning.", "File exist. Do you want to overlay it?");
175 |         if (res == QMessageBox::No) { return ERROR_INVALID_ARG; }
176 |     }
177 | 
178 |     remoteFileStd = ui->RemoteFileLineEdit->text().toStdString();
179 |     remoteFile = remoteFileStd.c_str();
180 |     remoteFileByteArray = code->fromUnicode(remoteFile);
181 |     remoteFileGB = remoteFileByteArray.data();
182 |     remoteFile = remoteFileGB.c_str();
183 | 
184 |     extended.isExtended = extended.tsizeExist || extended.blksizeExist || extended.timeoutExist;
185 |     return TFTP_NO_ERROR;
186 | }
187 | 
188 | /**
189 |  * SET UI MODULE STATUS 设置UI组件状态
190 |  * @isEnabled : enabled or disabled 启用或禁用
191 |  */
192 | void MainWindow::setModuleEnabled(bool isEnabled) {
193 |     ui->GetBtn->setEnabled(isEnabled);
194 |     ui->PutBtn->setEnabled(isEnabled);
195 |     //ui->BreakBtn->setEnabled(!isEnabled);
196 |     ui->tsizeCheckBox->setEnabled(isEnabled);
197 |     ui->blksizeCheckBox->setEnabled(isEnabled);
198 |     ui->timeoutCheckBox->setEnabled(isEnabled);
199 |     ui->blksizeSpinBox->setEnabled(isEnabled);
200 |     ui->timeoutSpinBox->setEnabled(isEnabled);
201 |     if (isEnabled) { ui->UploadLabel->setText("0.00"); ui->DownloadLabel->setText("0.00"); }
202 |     return;
203 | }
204 | 
205 | 


--------------------------------------------------------------------------------
/TFTP_Client/mainwindow.ui:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0" encoding="UTF-8"?>
  2 | <ui version="4.0">
  3 |  <class>MainWindow</class>
  4 |  <widget class="QMainWindow" name="MainWindow">
  5 |   <property name="geometry">
  6 |    <rect>
  7 |     <x>0</x>
  8 |     <y>0</y>
  9 |     <width>800</width>
 10 |     <height>600</height>
 11 |    </rect>
 12 |   </property>
 13 |   <property name="font">
 14 |    <font>
 15 |     <family>新宋体</family>
 16 |     <pointsize>11</pointsize>
 17 |    </font>
 18 |   </property>
 19 |   <property name="windowTitle">
 20 |    <string>TFTP CLIENT by XBA</string>
 21 |   </property>
 22 |   <property name="windowIcon">
 23 |    <iconset resource="images/images.qrc">
 24 |     <normaloff>:/icon.png</normaloff>:/icon.png</iconset>
 25 |   </property>
 26 |   <widget class="QWidget" name="centralwidget">
 27 |    <layout class="QVBoxLayout" name="verticalLayout_6">
 28 |     <item>
 29 |      <widget class="QGroupBox" name="groupBox_2">
 30 |       <property name="title">
 31 |        <string>Basic Settings</string>
 32 |       </property>
 33 |       <layout class="QVBoxLayout" name="verticalLayout_5">
 34 |        <item>
 35 |         <layout class="QHBoxLayout" name="horizontalLayout_8">
 36 |          <item>
 37 |           <layout class="QHBoxLayout" name="horizontalLayout_4">
 38 |            <item>
 39 |             <widget class="QLabel" name="ServerIPLabel">
 40 |              <property name="frameShape">
 41 |               <enum>QFrame::NoFrame</enum>
 42 |              </property>
 43 |              <property name="frameShadow">
 44 |               <enum>QFrame::Raised</enum>
 45 |              </property>
 46 |              <property name="text">
 47 |               <string>Server IP:</string>
 48 |              </property>
 49 |             </widget>
 50 |            </item>
 51 |            <item>
 52 |             <widget class="QLineEdit" name="ServerIPLineEdit">
 53 |              <property name="text">
 54 |               <string>127.0.0.1</string>
 55 |              </property>
 56 |              <property name="maxLength">
 57 |               <number>512</number>
 58 |              </property>
 59 |             </widget>
 60 |            </item>
 61 |           </layout>
 62 |          </item>
 63 |          <item>
 64 |           <layout class="QHBoxLayout" name="horizontalLayout_6">
 65 |            <item>
 66 |             <widget class="QLabel" name="ServerPortLabel">
 67 |              <property name="frameShape">
 68 |               <enum>QFrame::NoFrame</enum>
 69 |              </property>
 70 |              <property name="frameShadow">
 71 |               <enum>QFrame::Raised</enum>
 72 |              </property>
 73 |              <property name="text">
 74 |               <string>Server Port:</string>
 75 |              </property>
 76 |             </widget>
 77 |            </item>
 78 |            <item>
 79 |             <widget class="QLineEdit" name="ServerPortLineEdit">
 80 |              <property name="focusPolicy">
 81 |               <enum>Qt::StrongFocus</enum>
 82 |              </property>
 83 |              <property name="text">
 84 |               <string>69</string>
 85 |              </property>
 86 |              <property name="maxLength">
 87 |               <number>128</number>
 88 |              </property>
 89 |             </widget>
 90 |            </item>
 91 |           </layout>
 92 |          </item>
 93 |          <item>
 94 |           <layout class="QHBoxLayout" name="horizontalLayout_7">
 95 |            <item>
 96 |             <widget class="QLabel" name="ModeLabel">
 97 |              <property name="text">
 98 |               <string>Mode:</string>
 99 |              </property>
100 |             </widget>
101 |            </item>
102 |            <item>
103 |             <widget class="QComboBox" name="ModeComboBox"/>
104 |            </item>
105 |           </layout>
106 |          </item>
107 |         </layout>
108 |        </item>
109 |        <item>
110 |         <layout class="QHBoxLayout" name="horizontalLayout_3">
111 |          <item>
112 |           <layout class="QVBoxLayout" name="verticalLayout_3">
113 |            <item>
114 |             <widget class="QLabel" name="LocalFileLabel">
115 |              <property name="frameShape">
116 |               <enum>QFrame::NoFrame</enum>
117 |              </property>
118 |              <property name="frameShadow">
119 |               <enum>QFrame::Raised</enum>
120 |              </property>
121 |              <property name="text">
122 |               <string>Local File:</string>
123 |              </property>
124 |             </widget>
125 |            </item>
126 |            <item>
127 |             <widget class="QLabel" name="RemoteFileLabel">
128 |              <property name="frameShape">
129 |               <enum>QFrame::NoFrame</enum>
130 |              </property>
131 |              <property name="frameShadow">
132 |               <enum>QFrame::Raised</enum>
133 |              </property>
134 |              <property name="text">
135 |               <string>Remote File:</string>
136 |              </property>
137 |             </widget>
138 |            </item>
139 |           </layout>
140 |          </item>
141 |          <item>
142 |           <layout class="QVBoxLayout" name="verticalLayout_2">
143 |            <item>
144 |             <layout class="QHBoxLayout" name="horizontalLayout_2">
145 |              <item>
146 |               <widget class="QLineEdit" name="LocalFileLineEdit">
147 |                <property name="maxLength">
148 |                 <number>512</number>
149 |                </property>
150 |               </widget>
151 |              </item>
152 |              <item>
153 |               <widget class="QPushButton" name="dirBtn">
154 |                <property name="text">
155 |                 <string>...</string>
156 |                </property>
157 |                <property name="icon">
158 |                 <iconset resource="images/images.qrc">
159 |                  <normaloff>:/openFile.png</normaloff>:/openFile.png</iconset>
160 |                </property>
161 |               </widget>
162 |              </item>
163 |             </layout>
164 |            </item>
165 |            <item>
166 |             <widget class="QLineEdit" name="RemoteFileLineEdit">
167 |              <property name="maxLength">
168 |               <number>512</number>
169 |              </property>
170 |              <property name="frame">
171 |               <bool>true</bool>
172 |              </property>
173 |              <property name="clearButtonEnabled">
174 |               <bool>false</bool>
175 |              </property>
176 |             </widget>
177 |            </item>
178 |           </layout>
179 |          </item>
180 |         </layout>
181 |        </item>
182 |       </layout>
183 |      </widget>
184 |     </item>
185 |     <item>
186 |      <layout class="QHBoxLayout" name="horizontalLayout_5">
187 |       <item>
188 |        <widget class="QGroupBox" name="groupBox">
189 |         <property name="title">
190 |          <string>Extended Settings</string>
191 |         </property>
192 |         <layout class="QHBoxLayout" name="horizontalLayout">
193 |          <item>
194 |           <layout class="QGridLayout" name="gridLayout">
195 |            <item row="0" column="0">
196 |             <widget class="QCheckBox" name="tsizeCheckBox">
197 |              <property name="autoFillBackground">
198 |               <bool>false</bool>
199 |              </property>
200 |              <property name="text">
201 |               <string>tsize</string>
202 |              </property>
203 |             </widget>
204 |            </item>
205 |            <item row="0" column="1">
206 |             <widget class="QCheckBox" name="blksizeCheckBox">
207 |              <property name="text">
208 |               <string>blksize</string>
209 |              </property>
210 |             </widget>
211 |            </item>
212 |            <item row="0" column="2">
213 |             <widget class="QCheckBox" name="timeoutCheckBox">
214 |              <property name="text">
215 |               <string>timeout</string>
216 |              </property>
217 |             </widget>
218 |            </item>
219 |            <item row="1" column="0">
220 |             <widget class="QLabel" name="tsizeLabel">
221 |              <property name="layoutDirection">
222 |               <enum>Qt::LeftToRight</enum>
223 |              </property>
224 |              <property name="text">
225 |               <string>Unknown</string>
226 |              </property>
227 |             </widget>
228 |            </item>
229 |            <item row="1" column="1">
230 |             <widget class="QSpinBox" name="blksizeSpinBox">
231 |              <property name="frame">
232 |               <bool>true</bool>
233 |              </property>
234 |              <property name="maximum">
235 |               <number>16384</number>
236 |              </property>
237 |              <property name="value">
238 |               <number>512</number>
239 |              </property>
240 |             </widget>
241 |            </item>
242 |            <item row="1" column="2">
243 |             <widget class="QSpinBox" name="timeoutSpinBox">
244 |              <property name="maximum">
245 |               <number>255</number>
246 |              </property>
247 |              <property name="value">
248 |               <number>2</number>
249 |              </property>
250 |             </widget>
251 |            </item>
252 |           </layout>
253 |          </item>
254 |         </layout>
255 |        </widget>
256 |       </item>
257 |       <item>
258 |        <widget class="QGroupBox" name="groupBox_3">
259 |         <property name="title">
260 |          <string>Operate</string>
261 |         </property>
262 |         <layout class="QVBoxLayout" name="verticalLayout">
263 |          <item>
264 |           <widget class="QPushButton" name="GetBtn">
265 |            <property name="minimumSize">
266 |             <size>
267 |              <width>30</width>
268 |              <height>0</height>
269 |             </size>
270 |            </property>
271 |            <property name="text">
272 |             <string>Get</string>
273 |            </property>
274 |            <property name="icon">
275 |             <iconset resource="images/images.qrc">
276 |              <normaloff>:/download.png</normaloff>:/download.png</iconset>
277 |            </property>
278 |           </widget>
279 |          </item>
280 |          <item>
281 |           <widget class="QPushButton" name="PutBtn">
282 |            <property name="text">
283 |             <string>Put</string>
284 |            </property>
285 |            <property name="icon">
286 |             <iconset resource="images/images.qrc">
287 |              <normaloff>:/upload.png</normaloff>:/upload.png</iconset>
288 |            </property>
289 |           </widget>
290 |          </item>
291 |          <item>
292 |           <widget class="QPushButton" name="BreakBtn">
293 |            <property name="text">
294 |             <string>Break(Undone)</string>
295 |            </property>
296 |           </widget>
297 |          </item>
298 |         </layout>
299 |        </widget>
300 |       </item>
301 |      </layout>
302 |     </item>
303 |     <item>
304 |      <widget class="QGroupBox" name="groupBox_4">
305 |       <property name="title">
306 |        <string>Info</string>
307 |       </property>
308 |       <layout class="QVBoxLayout" name="verticalLayout_4">
309 |        <item>
310 |         <layout class="QHBoxLayout" name="horizontalLayout_9" stretch="1,2,1,1,2,1,15">
311 |          <item>
312 |           <widget class="QLabel" name="label">
313 |            <property name="text">
314 |             <string>↑:</string>
315 |            </property>
316 |           </widget>
317 |          </item>
318 |          <item>
319 |           <widget class="QLabel" name="UploadLabel">
320 |            <property name="text">
321 |             <string>0.00</string>
322 |            </property>
323 |           </widget>
324 |          </item>
325 |          <item>
326 |           <widget class="QLabel" name="label_4">
327 |            <property name="text">
328 |             <string>kB/s</string>
329 |            </property>
330 |           </widget>
331 |          </item>
332 |          <item>
333 |           <widget class="QLabel" name="label_2">
334 |            <property name="text">
335 |             <string>↓:</string>
336 |            </property>
337 |           </widget>
338 |          </item>
339 |          <item>
340 |           <widget class="QLabel" name="DownloadLabel">
341 |            <property name="text">
342 |             <string>0.00</string>
343 |            </property>
344 |           </widget>
345 |          </item>
346 |          <item>
347 |           <widget class="QLabel" name="label_5">
348 |            <property name="text">
349 |             <string>kB/s</string>
350 |            </property>
351 |           </widget>
352 |          </item>
353 |          <item>
354 |           <widget class="QProgressBar" name="ProgressBar">
355 |            <property name="value">
356 |             <number>24</number>
357 |            </property>
358 |           </widget>
359 |          </item>
360 |         </layout>
361 |        </item>
362 |        <item>
363 |         <widget class="QTextBrowser" name="LogTextBrowser">
364 |          <property name="frameShape">
365 |           <enum>QFrame::Box</enum>
366 |          </property>
367 |          <property name="frameShadow">
368 |           <enum>QFrame::Raised</enum>
369 |          </property>
370 |          <property name="lineWidth">
371 |           <number>1</number>
372 |          </property>
373 |         </widget>
374 |        </item>
375 |        <item>
376 |         <layout class="QHBoxLayout" name="horizontalLayout_10">
377 |          <item>
378 |           <spacer name="horizontalSpacer">
379 |            <property name="orientation">
380 |             <enum>Qt::Horizontal</enum>
381 |            </property>
382 |            <property name="sizeHint" stdset="0">
383 |             <size>
384 |              <width>40</width>
385 |              <height>20</height>
386 |             </size>
387 |            </property>
388 |           </spacer>
389 |          </item>
390 |          <item>
391 |           <widget class="QPushButton" name="ClearBtn">
392 |            <property name="text">
393 |             <string>Clear</string>
394 |            </property>
395 |            <property name="icon">
396 |             <iconset resource="images/images.qrc">
397 |              <normaloff>:/clear.png</normaloff>:/clear.png</iconset>
398 |            </property>
399 |           </widget>
400 |          </item>
401 |          <item>
402 |           <widget class="QPushButton" name="SaveBtn">
403 |            <property name="text">
404 |             <string>Save</string>
405 |            </property>
406 |            <property name="icon">
407 |             <iconset resource="images/images.qrc">
408 |              <normaloff>:/save.png</normaloff>:/save.png</iconset>
409 |            </property>
410 |           </widget>
411 |          </item>
412 |          <item>
413 |           <spacer name="horizontalSpacer_2">
414 |            <property name="orientation">
415 |             <enum>Qt::Horizontal</enum>
416 |            </property>
417 |            <property name="sizeHint" stdset="0">
418 |             <size>
419 |              <width>40</width>
420 |              <height>20</height>
421 |             </size>
422 |            </property>
423 |           </spacer>
424 |          </item>
425 |         </layout>
426 |        </item>
427 |       </layout>
428 |      </widget>
429 |     </item>
430 |    </layout>
431 |   </widget>
432 |  </widget>
433 |  <resources>
434 |   <include location="images/images.qrc"/>
435 |  </resources>
436 |  <connections/>
437 | </ui>
438 | 


--------------------------------------------------------------------------------
/TFTP_Client/workthread.cpp:
--------------------------------------------------------------------------------
  1 | #include "workthread.h"
  2 | 
  3 | WorkThread::WorkThread(QObject *parent) : QThread(parent) {}
  4 | 
  5 | void WorkThread::run() {
  6 |     // Show task msg. 展示任务信息
  7 |     if (operation == OP_READ_REQ) { emit sendMsg(NO_ERROR, QString("--------------------- READ START ---------------------")); }
  8 |     if (operation == OP_WRITE_REQ) { emit sendMsg(NO_ERROR, QString("--------------------- WRITE START --------------------")); }
  9 |     emit sendMsg(NO_ERROR, QString("┌ LOCAL FILE  : %1").arg(QString::fromLocal8Bit(localFile)));
 10 |     emit sendMsg(NO_ERROR, QString("├ REMOTE FILE : %1").arg(QString::fromLocal8Bit(remoteFile)));
 11 |     char tempIP[16] = "0";
 12 |     InetNtopA(AF_INET, &serverAddr.sin_addr, tempIP, 16);
 13 |     emit sendMsg(NO_ERROR, QString("├ SERVER IP   : %1").arg(tempIP));
 14 |     emit sendMsg(NO_ERROR, QString("└ SERVER PORT : %1").arg(ntohs(serverAddr.sin_port)));
 15 | 
 16 |     // Check task arguments. 检查任务参数
 17 |     if (checkArgs() != TFTP_NO_ERROR) { tftpTerminate(false); return; }
 18 | 
 19 |     // Open local file. 打开本地文件
 20 |     if (openLocalFile() != TFTP_NO_ERROR) { tftpTerminate(false); return; }
 21 | 
 22 |     // Send request. 发送请求报文
 23 |     if (operation == OP_WRITE_REQ) { tSize = getFileSize(localFile); }
 24 |     if ((reqMsgLen = sendReqest()) < TFTP_NO_ERROR) { tftpTerminate(false); return; }
 25 | 
 26 |     // Set process bar and tsize label. 设置进度条和tsize
 27 |     emit sendProcessBarMaximum(operation == OP_WRITE_REQ ? (tSize <= 0 ? 0 : tSize) : 0);
 28 |     emit sendTSize(operation == OP_WRITE_REQ ? QString::number(tSize <= 0 ? 0 : tSize) : "Unknown");
 29 | 
 30 |     // Execute the task. 执行任务
 31 |     startTime = clock();
 32 |     if (operation == OP_READ_REQ) { recvFile(); }
 33 |     if (operation == OP_WRITE_REQ) { sendFile(); }
 34 | }
 35 | 
 36 | /**
 37 |  * RECEIVE TASK ARGUMENTS FROM MAIN PROCESS 从主进程获得任务参数
 38 |  */
 39 | void WorkThread::recvReadFileArgs(SOCKET sock, SOCKADDR_IN servAddr, const char* reFile, const char* loFile, int mode, EXTENDED ext, int oper) {
 40 |     // Get args.
 41 |     //this->socketFd = sock;
 42 |     this->serverAddr = servAddr;
 43 |     this->remoteFile = reFile;
 44 |     this->localFile = loFile;
 45 |     this->mode = mode;
 46 |     this->extended = ext;
 47 |     this->operation = oper;
 48 | 
 49 |     // Init args.
 50 |     if (fp) { fclose(fp); fp = NULL; }
 51 |     tSize = 0;
 52 |     blkSize = TFTP_DEFAULT_BLOCK_SIZE;
 53 |     timeOut = TFTP_DEFAULT_TIMEOUT_SEC;
 54 |     tvTimeOut = { timeOut, 0 };
 55 |     lastBytesRecv = lastBytesSend = bytesRecv = bytesSend = 0;
 56 |     totalRetransmitCount = fileSize = 0;
 57 |     percent = 0;
 58 | 
 59 |     this->socketFd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 60 | }
 61 | 
 62 | /**
 63 |  * CHECK ARGUMENTS OF CURRENT READ/WRITE REQUEST 检查当前读/写请求的参数
 64 |  * #return : stauts code 状态码
 65 |  */
 66 | int WorkThread::checkArgs() {
 67 |     // Check reqest size. 检查请求报文长度
 68 |     size_t reqMsgLenCheck = FULLSTRLEN(remoteFile) + FULLSTRLEN(mode == MODE_NETASCII ? "netascii" : "octet");
 69 |     if (extended.isExtended) {
 70 |         int tempTSize = operation == OP_WRITE_REQ ? getFileSize(localFile) : 0;
 71 |         reqMsgLenCheck += extended.tsizeExist ? FULLSTRLEN("tsize") + FULLNUMLEN(0) : FULLNUMLEN(tempTSize <= 0 ? 0 : tempTSize);
 72 |         reqMsgLenCheck += extended.blksizeExist ? FULLSTRLEN("blksize") + FULLNUMLEN(extended.blksize) : 0;
 73 |         reqMsgLenCheck += extended.timeoutExist ? FULLSTRLEN("timeout") + FULLNUMLEN(extended.timeout) : 0;
 74 |     }
 75 |     if (reqMsgLenCheck > REQ_SIZE) {
 76 |         emit sendMsg(ERROR_TOO_LONG_REQUEST, QString("Args Check : Too long request : <%1>.").arg(reqMsgLenCheck + OP_SIZE));
 77 |         return ERROR_TOO_LONG_REQUEST;
 78 |     }
 79 | 
 80 |     // Check mode. 检查模式
 81 |     if (mode != MODE_NETASCII && mode != MODE_OCTET) {
 82 |         emit sendMsg(ERROR_UNDEFINED_MODE, QString("Args Check : Undefined mode : <%1>.").arg(mode));
 83 |         return ERROR_UNDEFINED_MODE;
 84 |     }
 85 | 
 86 |     emit sendMsg(TFTP_NO_ERROR, "Args Check : Valid.");
 87 |     return TFTP_NO_ERROR;
 88 | }
 89 | 
 90 | /**
 91 |  * OPEN LOCAL FILE ACCORDING TO THE OPERATION 根据当前操作用不同模式打开文件
 92 |  * #return : stauts code 状态码
 93 |  */
 94 | int WorkThread::openLocalFile() {
 95 |     // on windows, if "w", there will be a '\r' before '\n' while output
 96 |     if (fopen_s(&fp, localFile, operation == OP_READ_REQ ? "wb" : "rb") == 0) {
 97 |         emit sendMsg(TFTP_NO_ERROR, QString("Open file : Success : <%1>.").arg(QString::fromLocal8Bit(localFile)));
 98 |         return TFTP_NO_ERROR;
 99 |     } else {
100 |         emit sendMsg(ERROR_OPENFILE_FAIL, QString("Open file : Fail : <%1>.").arg(QString::fromLocal8Bit(localFile)));
101 |         return ERROR_OPENFILE_FAIL;
102 |     }
103 | }
104 | 
105 | /**
106 |  * MAKE AND SEND REQUEST PACKET 组装并发送请求报文
107 |  * #return : stauts code 状态码
108 |  */
109 | int WorkThread::sendReqest() {
110 |     // Make packet. 组装请求报文
111 |     int reqMsgLen = 0;
112 |     reqPkt.op = htons(operation);
113 |     appendMsg(reqPkt.reqMsg, REQ_SIZE, &reqMsgLen, "%s", remoteFile);
114 |     appendMsg(reqPkt.reqMsg, REQ_SIZE, &reqMsgLen, mode == MODE_NETASCII ? "netascii" : "octet");
115 |     if (extended.isExtended) {
116 |         if (extended.tsizeExist) { appendMsg(reqPkt.reqMsg, REQ_SIZE, &reqMsgLen, "%s%c%d", "tsize", 0, tSize <= 0 ? 0 : tSize); }
117 |         if (extended.blksizeExist) { appendMsg(reqPkt.reqMsg, REQ_SIZE, &reqMsgLen, "%s%c%d", "blksize", 0, extended.blksize); }
118 |         if (extended.timeoutExist) { appendMsg(reqPkt.reqMsg, REQ_SIZE, &reqMsgLen, "%s%c%d", "timeout", 0, extended.timeout); }
119 |     }
120 | 
121 |     // Send packet. 发送请求报文
122 |     int res = sendPkt((char*)&reqPkt, OP_SIZE + reqMsgLen);
123 |     if (res < 0) {
124 |         emit sendMsg(ERROR_SEND_REQ_FAIL, QString("REQUEST : Send request packet fail with code : <%1>.").arg((WSAGetLastError())));
125 |         return ERROR_SEND_REQ_FAIL;
126 |     } else if (res < OP_SIZE + reqMsgLen) {
127 |         emit sendMsg(TFTP_NO_ERROR, QString("REQUEST : Send request packet partically with length : <%1>.").arg(res));
128 |     } else {
129 |         emit sendMsg(TFTP_NO_ERROR, QString("REQUEST : Send request packet success with length : <%1>.").arg(res));
130 |         if (extended.isExtended) {
131 |             if (extended.tsizeExist) { emit sendMsg(TFTP_NO_ERROR, QString("└ Option tsize : <%1>.").arg(tSize <= 0 ? 0 : tSize)); }
132 |             if (extended.blksizeExist) { emit sendMsg(TFTP_NO_ERROR, QString("└ Option blksize : <%1>.").arg(extended.blksize)); }
133 |             if (extended.timeoutExist) { emit sendMsg(TFTP_NO_ERROR, QString("└ Option timeout : <%1>.").arg(extended.timeout)); }
134 |         }
135 |     }
136 |     return reqMsgLen;
137 | }
138 | 
139 | /**
140 |  * RECEIVE FILE FROM TFTP SERVER 从TFTP服务器接收文件
141 |  * #return : stauts code 状态码
142 |  */
143 | int WorkThread::recvFile() {
144 |     bool notSupportExtended = false;
145 |     int rcvdSize, retransmitCount = 0, ret, waitForDataRet = 0;
146 |     curBlock = extended.isExtended ? 0 : 1;
147 | 
148 |     // 1. If extended, get OACK packet and set args. 如果使用扩展，接收OACK报文并且从中获得可选设置
149 |     if (extended.isExtended) {
150 |         while (retransmitCount <= TFTP_MAX_RETRANSMIT) {
151 |             int waitForOACKRet = waitForOACK(timeOut * 1000, rcvdSize);
152 | 
153 |             if (waitForOACKRet == TFTP_OACK_PKT) { // Get the expected OACK packet. 得到了预期的OACK报文
154 |                 emit sendMsg(TFTP_NO_ERROR, "OACK : Support extended options.");
155 |                 getOptionFromOAckPkt(rcvdSize);
156 |                 if (sendAck(curBlock++) < 0) {
157 |                     tftpTerminate(false);
158 |                     return ERROR_SEND_ACK_FAIL;
159 |                 }
160 |                 break;
161 |             } else if (waitForOACKRet == TFTP_DATA_PKT) { // Get the expected DATA<1> packet. 服务器端不支持扩展选项，获得第一个DATA报文
162 |                 emit sendMsg(TFTP_NOT_SUPPORT_EXT, QString("DATA <1> : Not support extended options. Use default."));
163 |                 curBlock = 1;
164 |                 notSupportExtended = true;
165 |                 break;
166 |             } else if (waitForOACKRet == TFTP_ERROR_PKT) { // Get the expected error packet. 接收到ERROR报文
167 |                 if (rcvdSize < OP_SIZE + ERRCODE_SIZE) {
168 |                     emit sendMsg(ERROR_WRONG_PKT, "ERRO : Wrong error packet.");
169 |                 } else {
170 |                     emit sendMsg(ntohs(rcvdPkt.errCode), QString(rcvdPkt.errMsg));
171 |                 }
172 |                 tftpTerminate(false);
173 |                 return ntohs(rcvdPkt.errCode);
174 |             } else { // Get a unexpected packet. 接收到其他报文
175 |                 retransmitCount++;
176 |                 totalRetransmitCount++;
177 |                 emit sendMsg(ERROR_RETRANSMIT_EQU, "Retransmit request packet.");
178 |                 if (sendPkt((char*)&reqPkt, OP_SIZE + reqMsgLen) < 0) {
179 |                     emit sendMsg(ERROR_SEND_REQ_FAIL, "REQUEST : Send request packet fail.");
180 |                     tftpTerminate(false);
181 |                     return ERROR_SEND_REQ_FAIL;
182 |                 }
183 |             }
184 |         }
185 | 
186 |         if (retransmitCount > TFTP_MAX_RETRANSMIT) {
187 |             emit sendMsg(ERROR_RETRANSMIT_TOO_MUCH, "Retransmission times too much.");
188 |             tftpTerminate(false);
189 |             return ERROR_RETRANSMIT_TOO_MUCH;
190 |         }
191 |     }
192 | 
193 |     // 2. Get DATA packet and write to local file. 接收DATA报文并将数据写入本地文件
194 |     retransmitCount = 0;
195 |     while (retransmitCount <= TFTP_MAX_RETRANSMIT) {
196 |         // try to get data <curBlock> in timeOut(ms)
197 |         // if get the expected packet => send file and write file or error
198 |         //                       else => retransmit last ack and try another time
199 |         if (notSupportExtended && curBlock == 1) {
200 |             waitForDataRet = TFTP_DATA_PKT;
201 |         } else {
202 |             waitForDataRet = waitForSpecificPkt(curBlock, timeOut * 1000, rcvdSize, OP_DATA);
203 |         }
204 | 
205 |         if (waitForDataRet == TFTP_DATA_PKT) {  // get the expected data packet 得到DATA报文
206 |             // Write file. 写入文件
207 |             ret = (int)fwrite(rcvdPkt.data, 1, rcvdSize - OP_SIZE - BLOCK_SIZE, fp);
208 |             if (ret < (size_t)rcvdSize - OP_SIZE - BLOCK_SIZE) {
209 |                 emit sendMsg(ERROR_FWRITE_FAIL, "FWRITE : Fail.");
210 |                 tftpTerminate(false);
211 |                 return ERROR_FWRITE_FAIL;
212 |             }
213 |             // Send ACK. 发送ACK报文
214 |             if (sendAck(curBlock) < 0) {
215 |                 tftpTerminate(false);
216 |                 return ERROR_SEND_ACK_FAIL;
217 |             }
218 |             // Update data. 更新统计数据
219 |             curBlock++;
220 |             retransmitCount = 0;
221 |             fileSize += rcvdSize - OP_SIZE - BLOCK_SIZE;
222 |             // Check if end. 检测是否结束
223 |             if (rcvdSize == blkSize + OP_SIZE + BLOCK_SIZE) {   // not end => update the process bar 没有结束 => 更新进度条
224 |                 if (extended.tsizeExist && (double)fileSize / tSize > percent) {
225 |                     percent = (double)fileSize / tSize + 0.01;
226 |                     emit sendProcessBarValue(fileSize);
227 |                 }
228 |                 continue;
229 |             } else {  // end => show message and set the process bar 结束了 => 显示统计信息并更新进度条
230 |                 tftpTerminate(true);
231 |                 break;
232 |             }
233 |         } else if (waitForDataRet == TFTP_ERROR_PKT) {  // Get a expected error packet. 接收到ERROR报文
234 |             if (rcvdSize < OP_SIZE + ERRCODE_SIZE) {
235 |                 emit sendMsg(ERROR_WRONG_PKT, "ERRO : Wrong error packet.");
236 |             } else {
237 |                 emit sendMsg(ntohs(rcvdPkt.errCode), QString(rcvdPkt.errMsg));
238 |             }
239 |             tftpTerminate(false);
240 |             return ERROR_WRONG_PKT;
241 |         } else {  // get a unexpected packet 接收到其他报文
242 |             retransmitCount++;
243 |             totalRetransmitCount++;
244 |             if (!extended.isExtended && curBlock == 1) {
245 |                 emit sendMsg(ERROR_RETRANSMIT_EQU, "Retransmit request packet.");
246 |                 if (sendPkt((char*)&reqPkt, OP_SIZE + reqMsgLen) < 0) {
247 |                     emit sendMsg(ERROR_SEND_REQ_FAIL, "REQUEST : Send request packet fail.");
248 |                     tftpTerminate(false);
249 |                     return ERROR_SEND_REQ_FAIL;
250 |                 }
251 |             } else {
252 |                 emit sendMsg(ERROR_RETRANSMIT_ACK, QString("Retransmit ACK packet <%1>.").arg(curBlock - 1));
253 |                 if (sendAck(curBlock - 1) < 0) {
254 |                     tftpTerminate(false);
255 |                     return ERROR_SEND_ACK_FAIL;
256 |                 }
257 |             }
258 |         }
259 |     }
260 | 
261 |     if (retransmitCount > TFTP_MAX_RETRANSMIT) {
262 |         emit sendMsg(ERROR_RETRANSMIT_TOO_MUCH, "Retransmission times too much.");
263 |         tftpTerminate(false);
264 |         return ERROR_RETRANSMIT_TOO_MUCH;
265 |     }
266 | 
267 |     if (mode == MODE_NETASCII) { decodeNetascii(localFile, PLATFORM_WINDOWS); }
268 | 
269 |     return TFTP_NO_ERROR;
270 | }
271 | 
272 | /**
273 |  * SEND FILE TO TFTP SERVER 向TFTP服务器发送文件
274 |  * #return : stauts code 状态码
275 |  */
276 | int WorkThread::sendFile() {
277 |     bool haveGetFirstAck = false, isFinished = false;
278 |     int rcvdSize, dataSize = 0, retransmitCount = 0, waitForDataRet = 0;
279 |     curBlock = 0;
280 | 
281 |     // 1. If extended, get OACK packet and set args. 如果使用扩展，接收OACK报文并且从中获得可选设置
282 |     if (extended.isExtended) {
283 |         while (retransmitCount <= TFTP_MAX_RETRANSMIT) {
284 |             int waitForOACKRet = waitForOACK(timeOut * 1000, rcvdSize);
285 | 
286 |             if (waitForOACKRet == TFTP_OACK_PKT) {  // Get the expected OACK packet. 接收到预期的OACK报文
287 |                 emit sendMsg(TFTP_NO_ERROR, "OACK : Support extended options.");
288 |                 getOptionFromOAckPkt(rcvdSize);
289 |                 haveGetFirstAck = true;
290 |                 break;
291 |             } else if (waitForOACKRet == TFTP_ACK_PKT) {  // Get the expected ACK<0> packet. 服务器端不支持扩展选项，获得第一个ACK报文
292 |                 emit sendMsg(TFTP_NOT_SUPPORT_EXT, QString("ACK  <0> : Not support extended options. Use default."));
293 |                 haveGetFirstAck = true;
294 |                 break;
295 |             } else if (waitForOACKRet == TFTP_ERROR_PKT) {  // Get the expected error packet. 接收到ERROR报文
296 |                 if (rcvdSize < OP_SIZE + ERRCODE_SIZE) {
297 |                     emit sendMsg(ERROR_WRONG_PKT, "ERRO : Wrong error packet.");
298 |                 } else {
299 |                     emit sendMsg(ntohs(rcvdPkt.errCode), QString(rcvdPkt.errMsg));
300 |                 }
301 |                 tftpTerminate(false);
302 |                 return ntohs(rcvdPkt.errCode);
303 |             } else {  // Get a unexpected packet. 接收到其他报文
304 |                 retransmitCount++;
305 |                 totalRetransmitCount++;
306 |                 emit sendMsg(ERROR_RETRANSMIT_EQU, "Retransmit request packet.");
307 |                 if (sendPkt((char*)&reqPkt, OP_SIZE + reqMsgLen) < 0) {
308 |                     emit sendMsg(ERROR_SEND_REQ_FAIL, "REQUEST : Send request packet fail.");
309 |                     tftpTerminate(false);
310 |                     return ERROR_SEND_REQ_FAIL;
311 |                 }
312 |             }
313 |         }
314 | 
315 |         if (retransmitCount > TFTP_MAX_RETRANSMIT) {
316 |             emit sendMsg(ERROR_RETRANSMIT_TOO_MUCH, "Retransmission times too much.");
317 |             tftpTerminate(false);
318 |             return ERROR_RETRANSMIT_TOO_MUCH;
319 |         }
320 |     }
321 | 
322 |     // 2. Read loacl file and sent DATA packet. 读取本地文件并且发送DATA报文
323 |     retransmitCount = 0;
324 |     while (retransmitCount <= TFTP_MAX_RETRANSMIT) {
325 |         // try to get ack <curBlock> in timeOut(ms)
326 |         // if get the expected packet => read file and send data or error
327 |         //                       else => retransmit last data and try another time
328 |         if (curBlock == 0 && haveGetFirstAck) {
329 |             waitForDataRet = TFTP_ACK_PKT;
330 |         } else {
331 |             waitForDataRet = waitForSpecificPkt(curBlock, timeOut * 1000, rcvdSize, OP_ACK);
332 |         }
333 | 
334 |         if (waitForDataRet == TFTP_ACK_PKT) {  // Get the expected ack packet. 接收到ACK报文
335 |             if (!isFinished) {
336 |                 // Read file. 读取本地文件
337 |                 dataSize = (int)fread(dataPkt.data, 1, blkSize, fp);
338 |                 if (dataSize < blkSize) { isFinished = true; }
339 |                 // Send data. 发送DATA报文
340 |                 dataPkt.block = htons(++curBlock);
341 |                 if (sendPkt((char*)&dataPkt, dataSize + OP_SIZE + BLOCK_SIZE) < 0) {
342 |                     emit sendMsg(ERROR_SEND_DATA_FAIL, QString("DATA <%1> : Send DATA packet fail.").arg(curBlock - 1));
343 |                     tftpTerminate(false);
344 |                     return ERROR_SEND_DATA_FAIL;
345 |                 }
346 |                 // Update data. 更新统计数据和进度条
347 |                 retransmitCount = 0;
348 |                 fileSize += dataSize;
349 |                 if ((double)fileSize / tSize > percent) {
350 |                     percent = (double)fileSize / tSize + 0.01;
351 |                     emit sendProcessBarValue(fileSize);
352 |                 }
353 |             } else {  // Show message and set the process bar. 显示统计信息并更新进度条
354 |                 tftpTerminate(true);
355 |                 break;
356 |             }
357 |         } else if (waitForDataRet == TFTP_ERROR_PKT) {    // Get a expected error packet. 接收到ERROR报文
358 |             if (rcvdSize < OP_SIZE + ERRCODE_SIZE) {
359 |                 emit sendMsg(ERROR_WRONG_PKT, "ERRO : Wrong error packet.");
360 |             } else {
361 |                 emit sendMsg(ntohs(rcvdPkt.errCode), QString(rcvdPkt.errMsg));
362 |             }
363 |             tftpTerminate(false);
364 |             return ntohs(rcvdPkt.errCode);
365 |         }
366 |         else {  // Get a unexpected packet. 接收到其他报文
367 |             retransmitCount++;
368 |             totalRetransmitCount++;
369 |             if (!extended.isExtended && curBlock == 0) {
370 |                 emit sendMsg(ERROR_RETRANSMIT_EQU, "Retransmit request packet.");
371 |                 if (sendPkt((char*)&reqPkt, OP_SIZE + reqMsgLen) < 0) {
372 |                     emit sendMsg(ERROR_SEND_REQ_FAIL, "REQUEST : Send request packet fail.");
373 |                     tftpTerminate(false);
374 |                     return ERROR_SEND_REQ_FAIL;
375 |                 }
376 |             } else {
377 |                 emit sendMsg(ERROR_RETRANSMIT_ACK, QString("Retransmit DATA packet <%1>.").arg(curBlock));
378 |                 if (sendPkt((char*)&dataPkt, dataSize + OP_SIZE + BLOCK_SIZE) < 0) {
379 |                     emit sendMsg(ERROR_SEND_DATA_FAIL, QString("DATA <%1> : Send DATA packet fail.").arg(curBlock));
380 |                     tftpTerminate(false);
381 |                     return ERROR_SEND_DATA_FAIL;
382 |                 }
383 |             }
384 |         }
385 |     }
386 | 
387 |     if (retransmitCount > TFTP_MAX_RETRANSMIT) {
388 |         emit sendMsg(ERROR_RETRANSMIT_TOO_MUCH, "Retransmission times too much.");
389 |         tftpTerminate(false);
390 |         return TFTP_MAX_RETRANSMIT;
391 |     }
392 | 
393 |     return TFTP_NO_ERROR;
394 | }
395 | 
396 | /**
397 |  * MAKE AND SEND ACK PACKET 组装并发送ACK报文
398 |  * @block  : block num that ACK reply to 当前ACK对应的块号
399 |  * #return : the byte length sent 发送数据的字节长度
400 |  */
401 | int WorkThread::sendAck(WORD block) {
402 |     ackPkt.block = htons(block);
403 |     int ret = sendPkt((char*)&ackPkt, sizeof(PKG_ACK));
404 |     if (ret < 0) {
405 |         emit sendMsg(ERROR_SEND_ACK_FAIL, QString("ACK  <%1> : Send ACK packet fail.").arg(block));
406 |     } else {
407 |         // emit sendMsg(TFTP_NO_ERROR, QString("ACK  <%1> : Send ACK packet success.").arg(block));
408 |     }
409 |     return ret;
410 | }
411 | 
412 | /**
413 |  * SEND PACKET 发送报文
414 |  * @buf    : data to be sent 需要发送的数据
415 |  * @len    : length of the data 需要发送数据的长度
416 |  * #return : the byte length sent 发送数据的字节长度
417 |  */
418 | int WorkThread::sendPkt(const char* buf, int len) {
419 |     int ret = sendto(socketFd, buf, len, 0, (SOCKADDR*)&serverAddr, sizeof(serverAddr));
420 |     if (ret > 0) { bytesSend += ret; }
421 |     return ret;
422 | }
423 | 
424 | /**
425 |  * RECEIVE PACKET 接收报文
426 |  * @buf    : buffer to get data 缓冲区
427 |  * @len    : length of the buffer 缓冲区长度
428 |  * #return : the byte length received 接收数据的字节长度
429 |  */
430 | int WorkThread::recvPkt(char* buf, int len) {
431 |     int ret = recvfrom(socketFd, buf, len, 0, (SOCKADDR*)&serverAddr, &serverAddrLen);
432 |     if (ret > 0) { bytesRecv += ret; }
433 |     return ret;
434 | }
435 | 
436 | /**
437 |  * GET OPTION SETTINGS FROM OACK PACKET 从OACK报文中接收可选设置
438 |  * @rcvdSize : the length of the OACK packet OACK报文的长度
439 |  * #return   : the num of optional settings 可选数据的个数
440 |  */
441 | int WorkThread::getOptionFromOAckPkt(int rcvdSize) {
442 |     int count = 0;
443 |     char opt[ERROR_SIZE] = { 0 }, val[ERROR_SIZE] = { 0 };
444 |     for (int offset = 0; offset < rcvdSize - 2;) {
445 |         getMsg(opt, ERROR_SIZE, rcvdPkt.opMsg, &offset);
446 |         getMsg(val, ERROR_SIZE, rcvdPkt.opMsg, &offset);
447 |         if (extended.tsizeExist && strcmp(opt, "tsize") == 0) {
448 |             emit sendMsg(TFTP_NO_ERROR, QString("└ Option tsize : <%1>.").arg(val));
449 |             emit sendTSize(QString::number(tSize = atoi(val)));
450 |             count++;
451 |         }
452 |         if (extended.blksizeExist && strcmp(opt, "blksize") == 0) {
453 |             emit sendMsg(TFTP_NO_ERROR, QString("└ Option blksize : <%1>.").arg(val));
454 |             blkSize = atoi(val);
455 |             count++;
456 |         }
457 |         if (extended.timeoutExist && strcmp(opt, "timeout") == 0) {
458 |             emit sendMsg(TFTP_NO_ERROR, QString("└ Option timeout : <%1>.").arg(val));
459 |             tvTimeOut.tv_sec = timeOut = atoi(val) + 1;
460 |             count++;
461 |         }
462 |     }
463 |     if (extended.tsizeExist) { emit sendProcessBarMaximum(tSize); }
464 |     return count;
465 | }
466 | 
467 | /**
468 |  * TRY TO GET A PACKET IN TIMEOUTMS 尝试在TIMEOUTMS时间内接收一个报文
469 |  * @timeOutMs : time out interval (ms) 超时时间(毫秒)
470 |  * @rcvdSize  : used to return the size of packet received 用来返回接收报文的大小
471 |  * #return    : stauts code 状态码
472 |  */
473 | int WorkThread:: waitForPkt(int timeOutMs, int &rcvdSize) {
474 |     FD_SET readFds;
475 |     TIMEVAL tv = {timeOutMs / 1000, timeOutMs % 1000 * 1000};
476 |     FD_ZERO(&readFds);
477 |     FD_SET(socketFd, &readFds);
478 |     int selectRet = select(socketFd + 1, &readFds, NULL, NULL, &tv);
479 | 
480 |     if (selectRet == SOCKET_ERROR) {
481 |         return ERROR_SOCKET_ERROR;
482 |     } else if (selectRet == 0) {
483 |         return TFTP_ERROR_TIMEOUT;
484 |     } else {
485 |         rcvdSize = recvPkt((char*)&rcvdPkt, sizeof(PKG_DATA_ERROR_OACK));
486 |         if (rcvdSize == SOCKET_ERROR) {
487 |             emit sendMsg(ERROR_SOCKET_ERROR, "RECV : SOCKET_ERROR.");
488 |             return ERROR_SOCKET_ERROR;
489 |         } else if (rcvdSize == 0) {
490 |             emit sendMsg(ERROR_CONNECT_CLOSE, "RECV : The connection has been closed.");
491 |             return ERROR_CONNECT_CLOSE;
492 |         }
493 |     }
494 |     if (ntohs(rcvdPkt.op) == OP_DATA || ntohs(rcvdPkt.op) == OP_ACK || ntohs(rcvdPkt.op) == OP_ERROR) {
495 |         if (rcvdSize < OP_SIZE + MODE_SIZE) { return TFTP_ERROR_WRONG_PKT; }
496 |     } else if (ntohs(rcvdPkt.op) == OP_OACK) {
497 |         if (rcvdSize < OP_SIZE) { return TFTP_ERROR_WRONG_PKT; }
498 |     }
499 |     return TFTP_NO_ERROR;
500 | }
501 | 
502 | /**
503 |  * TRY TO GET A OACK PACKET IN TIMEOUTMS 尝试在TIMEOUTMS时间内接收一个OACK报文
504 |  * if operation == OP_READ_REQ and the server don't support extended options, there will be data<1>
505 |  * if operation == OP_WRITE_REQ and the server don't support extended options, there will be ack<0>
506 |  * @timeOutMs : time out interval (ms) 超时时间(毫秒)
507 |  * @rcvdSize  : used to return the size of packet received 用来返回接收报文的大小
508 |  * #return    : type of the packet received 接收到报文的类型
509 |  */
510 | int WorkThread::waitForOACK(int timeOutMs, int &rcvdSize) {
511 |     int restTime = timeOutMs, waitForPktRet, startTime;
512 | 
513 |     do {
514 |         startTime = clock();
515 |         waitForPktRet = waitForPkt(restTime, rcvdSize);
516 |         restTime -= (clock() - startTime);
517 |     } while (waitForPktRet == TFTP_NO_ERROR && (operation == OP_READ_REQ ? (ntohs(rcvdPkt.op) == OP_DATA && ntohs(rcvdPkt.block) != 1) :
518 |                                                 (ntohs(rcvdPkt.op) == OP_ACK && ntohs(rcvdPkt.block) != 0)));
519 | 
520 |     if (restTime <= 0) { emit sendMsg(TFTP_ERROR_TIMEOUT, QString("OACK : Timeout.")); }
521 | 
522 |     return waitForPktRet != TFTP_NO_ERROR ? waitForPktRet : ntohs(rcvdPkt.op);
523 | }
524 | 
525 | /**
526 |  * TRY TO GET A SPECIFIC PACKET(IDENTIFIED BY PKTTYPE) IN TIMEOUTMS 尝试在TIMEOUTMS时间内接收一个由PKTTYPE指定类型的报文
527 |  * @block     : block num of the packet 期待的报文的块号
528 |  * @timeOutMs : time out interval (ms) 超时时间(毫秒)
529 |  * @rcvdSize  : used to return the size of packet received 用来返回接收报文的大小
530 |  * @pktType   : packet type want to get 期望的报文类型
531 |  * #return    : type of the packet received 接收到报文的类型
532 |  */
533 | int WorkThread::waitForSpecificPkt(WORD block, int timeOutMs, int &rcvdSize, int pktType) {
534 |     int restTime = timeOutMs, waitForPktRet, startTime;
535 | 
536 |     do {
537 |         startTime = clock();
538 |         waitForPktRet = waitForPkt(restTime, rcvdSize);
539 |         restTime -= (clock() - startTime);
540 |     } while (waitForPktRet == TFTP_NO_ERROR && (ntohs(rcvdPkt.op) != pktType || ntohs(rcvdPkt.block) != block));
541 | 
542 |     if (restTime <= 0) {
543 |         emit sendMsg(TFTP_ERROR_TIMEOUT, (pktType == TFTP_ACK_PKT ? "ACK " : "DATA") + QString(" <%1> : Timeout.").arg(block));
544 |     }
545 | 
546 |     return waitForPktRet != TFTP_NO_ERROR ? waitForPktRet : ntohs(rcvdPkt.op);
547 | }
548 | 
549 | /**
550 |  * TERMINATE CURRENT TASK AND OUTPUT THE STATISTICAL INFORMATION 结束当前任务并输出统计信息
551 |  * @isSuccess : if the task is done successfully 当前任务是否成功结束
552 |  */
553 | void WorkThread::tftpTerminate(bool isSuccess) {
554 |     emit sendProcessBarMaximum(1);
555 |     emit sendProcessBarValue(isSuccess ? 1 : 0);
556 |     if (isSuccess) {
557 |         endTime = clock();
558 |         double timeSec = (double)(endTime - startTime) / CLOCKS_PER_SEC;
559 |         if (operation == OP_READ_REQ) {
560 |             emit sendMsg(TFTP_NO_ERROR, QString("Read Success  : <%1> ==> <%2>").arg(QString::fromLocal8Bit(remoteFile), QString::fromLocal8Bit(localFile)));
561 |         } else {
562 |             emit sendMsg(TFTP_NO_ERROR, QString("WRITE Success : <%1> ==> <%2>").arg(QString::fromLocal8Bit(localFile), QString::fromLocal8Bit(remoteFile)));
563 |         }
564 |         emit sendMsg(TFTP_NO_ERROR, QString("├ Block      : <%1 blks | %2 B/blk> ").arg(curBlock - (operation == OP_READ_REQ ? 1 : 0)).arg(blkSize));
565 |         emit sendMsg(TFTP_NO_ERROR, QString("├ Time       : <%1 s> ").arg(timeSec));
566 |         emit sendMsg(TFTP_NO_ERROR, QString("├ File Size  : <%1 kB> ").arg((double)fileSize / 1024));
567 |         emit sendMsg(TFTP_NO_ERROR, QString("├ Down       : <%1 kB> ").arg((double)bytesRecv / 1024));
568 |         emit sendMsg(TFTP_NO_ERROR, QString("├ Down Speed : <%1 kB/s> ").arg(((double)bytesRecv / 1024 / timeSec)));
569 |         emit sendMsg(TFTP_NO_ERROR, QString("├ Up         : <%1 kB> ").arg((double)bytesSend / 1024));
570 |         emit sendMsg(TFTP_NO_ERROR, QString("├ Up Speed   : <%1 kB/s> ").arg(((double)bytesSend / 1024 / timeSec)));
571 |         emit sendMsg(TFTP_NO_ERROR, QString("└ Retransmit : <%1 times> ").arg(totalRetransmitCount));
572 |         emit sendMsg(TFTP_NO_ERROR, QString("---------------------- END SUCC ----------------------"));
573 |     } else {
574 |         emit sendMsg(TFTP_NO_ERROR, QString("---------------------- END FAIL ----------------------"));
575 |     }
576 |     if (fp) { fclose(fp); }
577 | }
578 | 
579 | /**
580 |  * UPDATE THE REAL-TIME SPEED INFORMATION 更新实时吞吐量
581 |  */
582 | void WorkThread::recvTimeOutSignal() {
583 |     emit sendUploadSpeed(QString::number(((double)bytesSend - lastBytesSend) / TFTP_REFRESH_INTERVAL * 1000 / 1024));
584 |     emit sendDownloadSpeed(QString::number(((double)bytesRecv - lastBytesRecv) / TFTP_REFRESH_INTERVAL * 1000 / 1024));
585 |     lastBytesRecv = bytesRecv;
586 |     lastBytesSend = bytesSend;
587 | }
588 | 


--------------------------------------------------------------------------------
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