win32汇编环境,网络编程入门之十一

news2025/3/28 6:42:33

;win32汇编环境,网络编程入门之十一
;在上一教程里，我们学习了如何读取大容量的网页内容，在这一教程里，我们学习一下如何在wininet或winhttp机制中提取网页中的超链接
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.386
.model flat,stdcall
option casemap:none

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; Include 文件定义
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include windows.inc
include user32.inc
include kernel32.inc
include wininet.inc ;需要添加的wininet头文件

includelib user32.lib
includelib kernel32.lib
includelib wininet.lib ;需要添加的wininet库文件

; 自定义函数声明
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DlgProc proto :DWORD,:DWORD,:DWORD,:DWORD ;对话框窗口函数

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; Equ 等值定义
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MAINDIALOG   equ 1
ICO_MAIN   equ 1000   ;图标
ID_BUTTON01   equ 41
ID_EDIT01   equ 11
ID_EDIT02   equ 12
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; 数据段
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.data

szMsg db "提示",0
szFrm db "%d",0
szErr db "错误",0
szEnter db 13,10,0 ;回车换行符

szAgent db "Microsoft Internet Explorer",0 ;骗网站说自已是IE浏览器
szHostName db "www.kepai2023.cn",0 ;要访问的主机域名
szUrlPath db "/",0 ;要访问的主页，写成/index.html 也可以
szVerb db "GET",0 ;GET方法访问
szAccept db "Accept: text/html",0 ;只接受text或html文件返回

.data?
hInstance HINSTANCE ?
hEdithwnd01 HWND ?
hEdithwnd02 HWND ?

hInternet dd ?
hHttpSession dd ?
hHttpRequest dd ?
hHttp dd ?

.const

; 代码段
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.code
start:
invoke GetModuleHandle, NULL
mov hInstance,eax
invoke DialogBoxParam, hInstance, MAINDIALOG,NULL, addr DlgProc, NULL
invoke ExitProcess,eax
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;处理接收到的字符串，把链接内容提取出来
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_HandleData proc _lpData,_dwSize

LOCAL hSign ;用来当记号，当发现有链接开始，即<a 字符时定为1，当a>字符时定为2，没有情况时为0
LOCAL szBuffer[256]:byte
LOCAL szSaveBuffer[1024]:byte
LOCAL @stCR:CHARRANGE

mov   esi,_lpData
       mov hSign,0

       invoke   RtlZeroMemory,addr szBuffer,sizeof szBuffer
       invoke   RtlZeroMemory,addr szSaveBuffer,sizeof szSaveBuffer
       invoke SendMessage,hEdithwnd02,WM_SETTEXT,0,0 ;清空编辑框
       mov ebx,0
       mov edx,0
       .while TRUE
           .break .if ebx == _dwSize
           .if byte ptr [esi+ebx] == "<" && byte ptr [esi+ebx+1] == "a"
           mov hSign,1
           .endif
           .if byte ptr [esi+ebx] == ">" && byte ptr [esi+ebx-1] == "a"
           mov hSign,2
           mov byte ptr [szBuffer+edx],">"
           .endif
           .if hSign == 1
               mov al,byte ptr [esi+ebx]
               mov byte ptr [szBuffer+edx],al
               inc edx
           .endif
           .if hSign == 2
               invoke GetWindowTextLength,hEdithwnd02
   mov @stCR.cpMin,eax
           mov @stCR.cpMax,eax
               invoke MultiByteToWideChar,65001,0,addr szBuffer,256,addr szSaveBuffer,1024
               invoke SendMessageW,hEdithwnd02,EM_EXSETSEL,0,addr @stCR
   invoke SendMessageW,hEdithwnd02,EM_REPLACESEL,FALSE,addr szSaveBuffer

   invoke SendMessage,hEdithwnd02,EM_REPLACESEL,FALSE,addr szEnter ;加上回车换行符
               mov hSign,0
               mov edx,0
           .endif
           inc ebx
       .endw
       ret

_HandleData   endp
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_WorkThread   proc   _lParam
LOCAL @dwBytesReaded
LOCAL @szBuffer[256]:byte
LOCAL @szRecBuffer[1024]:byte
LOCAL @szSaveBuffer[1024]:byte
LOCAL @stCR:CHARRANGE

invoke InternetOpen,addr szAgent,INTERNET_OPEN_TYPE_DIRECT,NULL,NULL,0 ;初始化应用程序的 WinINet 函数的使用
mov hInternet,eax
invoke InternetConnect,hInternet,addr szHostName,80,NULL,NULL,INTERNET_SERVICE_HTTP,0,0 ;为给定站点打开文件传输协议（FTP）或 HTTP 会话,80是http的端口
mov hHttpSession,eax
.if eax == NULL
invoke MessageBox,NULL,addr szErr,addr szMsg,MB_OK
.endif

invoke HttpOpenRequest,hHttpSession,addr szVerb,addr szUrlPath,NULL,addr szAccept,0,0,0 ;创建 HTTP 请求句柄
mov hHttpRequest,eax
invoke HttpSendRequest,hHttpRequest,NULL,0,NULL,0 ;将指定的请求发送到 HTTP 服务器，可以附加数据，后面再说，先实现基本效果先
.if eax == NULL
invoke MessageBox,NULL,addr szErr,addr szMsg,MB_OK
.endif

   invoke SendMessageW,hEdithwnd01,WM_SETTEXT,0,0
   .while TRUE ;通过循环反复读取，直到读到0字节为止
   invoke RtlZeroMemory,addr @szRecBuffer,sizeof @szRecBuffer
   invoke RtlZeroMemory,addr @szSaveBuffer,sizeof @szSaveBuffer
   mov @dwBytesReaded,0
   invoke InternetReadFile,hHttpRequest,addr @szRecBuffer,1024,addr @dwBytesReaded ;从打开的句柄读取数据，
       .break .if @dwBytesReaded == 0
       invoke _HandleData,addr @szRecBuffer,1024 ;这里不能按字符串的长度赋值，因为服务器返回的数据里面可能很多0，而一般字符串以0为结束符
       invoke MultiByteToWideChar,65001,0,addr @szRecBuffer,1024,addr @szSaveBuffer,1024 ;将UTF8编码数据转为UNICODE编码
       invoke GetWindowTextLength,hEdithwnd01 ;从后面添加内容，防止覆盖上去
mov @stCR.cpMin,eax
       mov @stCR.cpMax,eax
       invoke SendMessageW,hEdithwnd01,EM_EXSETSEL,0,addr @stCR
invoke SendMessageW,hEdithwnd01,EM_REPLACESEL,FALSE,addr @szSaveBuffer
   .endw

ret

_WorkThread endp
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DlgProc proc hWnd:HWND, uMsg:UINT, wParam:WPARAM, lParam:LPARAM
LOCAL   @stWsa:WSADATA

.if uMsg == WM_INITDIALOG
   invoke   LoadIcon,hInstance,ICO_MAIN
   invoke   SendMessage,hWnd,WM_SETICON,ICON_BIG,eax

invoke GetDlgItem,hWnd,ID_EDIT01
mov hEdithwnd01,eax

invoke GetDlgItem,hWnd,ID_EDIT02
mov hEdithwnd02,eax

.elseif   uMsg ==   WM_COMMAND
           mov   ebx,wParam
       .if   bx ==   ID_BUTTON01
       invoke   CreateThread,NULL,0,offset _WorkThread,0,NULL,0 ;启动连接线程,用线程的原因是不让网络等待卡住主进程
           .endif
.elseif uMsg == WM_CLOSE
invoke InternetCloseHandle,hHttpRequest ;反向清除各类HINTERNET 句柄，即先生成的后清除，后生成的先清除
invoke InternetCloseHandle,hHttpSession
invoke InternetCloseHandle,hInternet
       invoke EndDialog,hWnd,NULL
.else
mov eax,FALSE
ret
.endif
mov eax,TRUE
ret
DlgProc endp

end start

;下面为rc文件内容
#include "resource.h" //提示缺少该文件，可以在资源里下载
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#define MAINDIALOG 1
#define ICO_MAIN 1000 //图标
#define ID_BUTTON01 41