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P: 52
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#include<windows.h>
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#include<dos.h>
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#include<dir.h>
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#include<fstream.h>
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#include<stdio.h>
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#include<process.h>
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#include"resource.h" //resource header file
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long convert(char *pass) //to convert password in to long integer
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{
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long total=0;
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for(int i=0;i<strlen(pass);i++)
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{
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total+=pass[i];
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}
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total=total;
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return(total);
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}
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int check(char *p) // to check if the path entered is a file or directory
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{
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int done;
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struct ffblk ffblk;
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done=findfirst(p,&ffblk,0);
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while(!done)
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{
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if(ffblk.ff_attrib&&FA_DIREC) //returns 1 if its a directory
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return(1);
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done=findnext(&ffblk);
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}
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return(0);
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}
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int encode(char *path,int op,char *pass) //fuction to encode file
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{
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long password=0;
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int done;
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char ch;
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double ctr;
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ifstream fin;
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ofstream fout;
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struct ffblk ffblk;
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switch(op)
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{
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case 0:ctr=0;
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password=convert(pass);
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fin.open(path,ios::in|ios::binary);
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fout.open(path,ios::out|ios::ate|ios::nocreate|ios::binary);
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if(!fin||!fout) //place where something goes wrong I think
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return(-1);
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while(!fin.eof())
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{
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fin.seekg(ctr);
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fin.get(ch); //reading each character
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if(fin.eof())
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break;
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ch=int(ch+password); //adding some value to character(encoding)
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fout.seekp(ctr);
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fout.put(ch);
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ctr++;
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}
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fout.flush();
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fin.close();
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fout.close();
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break;
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case 1:chdir(path); //changing directory if the entere path is a folder
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done=findfirst("*.*",&ffblk,0); //searching every file
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while(!done)
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{
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encode(ffblk.ff_name,0,pass);
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done=findnext(&ffblk);
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}
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break;
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default:return(-1);
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}
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return(0);
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}
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int decode(char *path,int op,char *pass) //to decode file:similar to encode
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{
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long password=0;
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int done;
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char ch;
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double ctr;
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ifstream fin;
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ofstream fout;
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struct ffblk ffblk;
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if(op==-1)
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return(-1);
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switch(op)
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{
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case 0:ctr=0;
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password=convert(pass);
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fin.open(path,ios::in|ios::binary);
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fout.open(path,ios::out|ios::ate|ios::nocreate|ios::binary);
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if(!fout||!fin)
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return(-1);
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while(!fin.eof())
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{
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fin.seekg(ctr);
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fin.get(ch);
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if(fin.eof())
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break;
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ch=ch-int(password);
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fout.seekp(ctr);
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fout.put(ch);
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ctr++;
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}
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fout.flush();
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fin.close();
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fout.close();
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break;
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case 1:chdir(path);
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done=findfirst("*.*",&ffblk,0);
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while(!done)
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{
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decode(ffblk.ff_name,0,pass);
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done=findnext(&ffblk);
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}
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break;
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}
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return(0);
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}
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//No problem here I think.Here's where the dialog box stuff go
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BOOL CALLBACK DlgProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam)
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{
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switch(msg)
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{
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case WM_INITDIALOG:SetDlgItemText(hwnd,IDC_TEXT_I,"");
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SetDlgItemText(hwnd,IDC_TEXT_II,"");
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break;
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case WM_COMMAND :
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switch(LOWORD(wParam))
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{
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case IDC_ENCODE:{
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int len1=GetWindowTextLength(GetDlgItem(hwnd,IDC_TEXT_I));
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int len2=GetWindowTextLength(GetDlgItem(hwnd,IDC_TEXT_II));
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if(len1>0&&len2>0)
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{
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char *buf1,*buf2;
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buf1=(char*)GlobalAlloc(GPTR,len1+1);
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buf2=(char*)GlobalAlloc(GPTR,len2+1);
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GetDlgItemText(hwnd,IDC_TEXT_I,buf1,len1+1);
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GetDlgItemText(hwnd,IDC_TEXT_II,buf2,len2+1);
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int i=check(buf1);
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int e=encode(buf1,i,buf2);
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if(e==0)
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{
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MessageBox(hwnd,"ENCODING COMPLETED","REPORT",MB_OK|MB_ICONINFORMATION);
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SetDlgItemText(hwnd,IDC_TEXT_I,"");
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SetDlgItemText(hwnd,IDC_TEXT_II,"");
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}
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else if(e==-1)
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{
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MessageBox(hwnd,"ERROR IN ENCODING PROCESS","REPORT",MB_OK|MB_ICONEXCLAMATION);//This shows up as error
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}
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GlobalFree((HWND)buf1);
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GlobalFree((HWND)buf2);
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}
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else
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{
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MessageBox(hwnd,"PARAMETER(S) MISSING","WARNING",MB_OK|MB_ICONEXCLAMATION);
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}}
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break;
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case IDC_DECODE:{
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int len1=GetWindowTextLength(GetDlgItem(hwnd,IDC_TEXT_I));
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int len2=GetWindowTextLength(GetDlgItem(hwnd,IDC_TEXT_II));
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if(len1>0&&len2>0)
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{
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char *buf1,*buf2;
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buf1=(char*)GlobalAlloc(GPTR,len1+1);
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buf2=(char*)GlobalAlloc(GPTR,len2+1);
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GetDlgItemText(hwnd,IDC_TEXT_I,buf1,len1+1);
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GetDlgItemText(hwnd,IDC_TEXT_II,buf2,len2+1);
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int i=check(buf1);
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int e=decode(buf1,i,buf2);
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if(e==0)
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{
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MessageBox(hwnd,"ENCODING COMPLETED","REPORT",MB_OK|MB_ICONINFORMATION);
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SetDlgItemText(hwnd,IDC_TEXT_I,"");
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SetDlgItemText(hwnd,IDC_TEXT_II,"");
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}
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else if(e==-1)
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{
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MessageBox(hwnd,"ERROR IN DECODING PROCESS","REPORT",MB_OK|MB_ICONEXCLAMATION);//This shows up as error
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}
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GlobalFree((HWND)buf1);
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GlobalFree((HWND)buf2);
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}
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else
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{
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MessageBox(hwnd,"PARAMETER(S) MISSING","WARNING",MB_OK|MB_ICONEXCLAMATION);
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}}
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break;
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case IDC_about:MessageBox(hwnd,"FE for WINDOWS\r\n -by- \r\nRAHUL.ES\r\nCreated:18-2-07\r\nContact:es_rahul@yahoo.co.in","ABOUT",MB_ICONINFORMATION|MB_OK);
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break;
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}
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break;
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case WM_CLOSE : EndDialog(hwnd,0);
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break;
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default : return FALSE;
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}
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return TRUE;
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}
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//WinMain
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int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine, int nCmdShow)
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{
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HICON hMyIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_MYICON));
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return DialogBox(hInstance, MAKEINTRESOURCE(IDD_MAIN), NULL, DlgProc)
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;
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}
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The above program is a simple program using WinApi to encode and decode files.But every time I execute it,the dialog box mentioned above in the comments appear.I can't figure out how to correct the error...
Please Help.... :-)
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