URL Notifier

This app monitors URLs and Files for changes. It runs from the command prompt, just pass the URLs as the parameters. If its a file use file:/// URL. It uses Internet Explorer URLMon library to download the URLs. To see how to use just open urlnotify.exe file. Great for RSS feeds, comments feeds and blogs.

program urlnotify;

{$APPTYPE CONSOLE}
{$RESOURCE URLNotifier.res}
uses
  SysUtils,
  windows,
  urlmon,
  Classes,mmsystem,
  shellapi;
const Table: Array[0..255] of DWord =
     ($00000000, $77073096, $EE0E612C, $990951BA,
      $076DC419, $706AF48F, $E963A535, $9E6495A3,
      $0EDB8832, $79DCB8A4, $E0D5E91E, $97D2D988,
      $09B64C2B, $7EB17CBD, $E7B82D07, $90BF1D91,
      $1DB71064, $6AB020F2, $F3B97148, $84BE41DE,
      $1ADAD47D, $6DDDE4EB, $F4D4B551, $83D385C7,
      $136C9856, $646BA8C0, $FD62F97A, $8A65C9EC,
      $14015C4F, $63066CD9, $FA0F3D63, $8D080DF5,
      $3B6E20C8, $4C69105E, $D56041E4, $A2677172,
      $3C03E4D1, $4B04D447, $D20D85FD, $A50AB56B,
      $35B5A8FA, $42B2986C, $DBBBC9D6, $ACBCF940,
      $32D86CE3, $45DF5C75, $DCD60DCF, $ABD13D59,
      $26D930AC, $51DE003A, $C8D75180, $BFD06116,
      $21B4F4B5, $56B3C423, $CFBA9599, $B8BDA50F,
      $2802B89E, $5F058808, $C60CD9B2, $B10BE924,
      $2F6F7C87, $58684C11, $C1611DAB, $B6662D3D,
      $76DC4190, $01DB7106, $98D220BC, $EFD5102A,
      $71B18589, $06B6B51F, $9FBFE4A5, $E8B8D433,
      $7807C9A2, $0F00F934, $9609A88E, $E10E9818,
      $7F6A0DBB, $086D3D2D, $91646C97, $E6635C01,
      $6B6B51F4, $1C6C6162, $856530D8, $F262004E,
      $6C0695ED, $1B01A57B, $8208F4C1, $F50FC457,
      $65B0D9C6, $12B7E950, $8BBEB8EA, $FCB9887C,
      $62DD1DDF, $15DA2D49, $8CD37CF3, $FBD44C65,
      $4DB26158, $3AB551CE, $A3BC0074, $D4BB30E2,
      $4ADFA541, $3DD895D7, $A4D1C46D, $D3D6F4FB,
      $4369E96A, $346ED9FC, $AD678846, $DA60B8D0,
      $44042D73, $33031DE5, $AA0A4C5F, $DD0D7CC9,
      $5005713C, $270241AA, $BE0B1010, $C90C2086,
      $5768B525, $206F85B3, $B966D409, $CE61E49F,
      $5EDEF90E, $29D9C998, $B0D09822, $C7D7A8B4,
      $59B33D17, $2EB40D81, $B7BD5C3B, $C0BA6CAD,
      $EDB88320, $9ABFB3B6, $03B6E20C, $74B1D29A,
      $EAD54739, $9DD277AF, $04DB2615, $73DC1683,
      $E3630B12, $94643B84, $0D6D6A3E, $7A6A5AA8,
      $E40ECF0B, $9309FF9D, $0A00AE27, $7D079EB1,
      $F00F9344, $8708A3D2, $1E01F268, $6906C2FE,
      $F762575D, $806567CB, $196C3671, $6E6B06E7,
      $FED41B76, $89D32BE0, $10DA7A5A, $67DD4ACC,
      $F9B9DF6F, $8EBEEFF9, $17B7BE43, $60B08ED5,
      $D6D6A3E8, $A1D1937E, $38D8C2C4, $4FDFF252,
      $D1BB67F1, $A6BC5767, $3FB506DD, $48B2364B,
      $D80D2BDA, $AF0A1B4C, $36034AF6, $41047A60,
      $DF60EFC3, $A867DF55, $316E8EEF, $4669BE79,
      $CB61B38C, $BC66831A, $256FD2A0, $5268E236,
      $CC0C7795, $BB0B4703, $220216B9, $5505262F,
      $C5BA3BBE, $B2BD0B28, $2BB45A92, $5CB36A04,
      $C2D7FFA7, $B5D0CF31, $2CD99E8B, $5BDEAE1D,
      $9B64C2B0, $EC63F226, $756AA39C, $026D930A,
      $9C0906A9, $EB0E363F, $72076785, $05005713,
      $95BF4A82, $E2B87A14, $7BB12BAE, $0CB61B38,
      $92D28E9B, $E5D5BE0D, $7CDCEFB7, $0BDBDF21,
      $86D3D2D4, $F1D4E242, $68DDB3F8, $1FDA836E,
      $81BE16CD, $F6B9265B, $6FB077E1, $18B74777,
      $88085AE6, $FF0F6A70, $66063BCA, $11010B5C,
      $8F659EFF, $F862AE69, $616BFFD3, $166CCF45,
      $A00AE278, $D70DD2EE, $4E048354, $3903B3C2,
      $A7672661, $D06016F7, $4969474D, $3E6E77DB,
      $AED16A4A, $D9D65ADC, $40DF0B66, $37D83BF0,
      $A9BCAE53, $DEBB9EC5, $47B2CF7F, $30B5FFE9,
      $BDBDF21C, $CABAC28A, $53B39330, $24B4A3A6,
      $BAD03605, $CDD70693, $54DE5729, $23D967BF,
      $B3667A2E, $C4614AB8, $5D681B02, $2A6F2B94,
      $B40BBE37, $C30C8EA1, $5A05DF1B, $2D02EF8D);
LOG_FAILED_REQUEST=2;
LOG_CHANGED_FOUND=1;
LOG_STARTUP=3;
LOG_REGFAILED=4;
SOUND_MODE_OFF=0;
SOUND_MODE_PLAY_ONCE=1;
SOUND_MODE_BEEP=2;
var CurrentFN,ELComputer:array[0..max_path]of char;
I:integer;
herr:hresult;
seerr:hinst;
hel:thandle;
hkel,hkApp,CheckSumKey:hkey;
soundmode,eltypes,currentcrc,newcrc,rs,sleeptime:dword;
mbText:array[0..1024]of char;
function WriteEvent(id,wtype,rawsize:dword;Strs:array of PChar;raw:pointer):boolean;
begin
hel:=registereventsource(elcomputer,'URLNotifier');
if length(strs)>0then result:=reportevent(hel,wtype,0,id,nil,length(strs),rawsize,
@strs[0],raw)else result:=reportevent(hel,wtype,0,id,nil,0,rawsize,nil,raw);
deregistereventsource(hel);
end;
procedure CalcCRC32(const FileName: String; var CRC32: dword);
var F: file;
    BytesRead: dword;
    Buffer: Array[1..65521] of byte;
    i: Word;
begin
    FileMode := 0;
    CRC32 := $ffffffff;
    {$I-}
    AssignFile(F, FileName);
    Reset(F, 1);
    if IOResult = 0 then
    begin
      repeat
        BlockRead(F, Buffer, SizeOf(Buffer), BytesRead);
        for i := 1 to BytesRead do CRC32 := (CRC32 shr 8) xor Table[Buffer[i] xor
        (CRC32 and $000000FF)];
      until BytesRead = 0;
    end;
    CloseFile(F);
    {$I+}
    CRC32 := not CRC32;
end;

function getURLSize:string;
var h:thandle;
begin
h:=createfile(currentfn,generic_read,file_share_read or file_share_write or
file_share_delete,nil,open_existing,file_attribute_normal,0);
result:=formatfloat('0,',getfilesize(h,nil))+' Bytes';
closehandle(h);
end;

function finishMonitoring(ctrltype:dword):Boolean;
begin
regclosekey(hkapp);
regclosekey(checksumkey);
deregistereventsource(hel);
writeln(datetimetostr(now),' - Monitoring aborted');
Exitprocess(0);
end;

begin
if paramcount=0then begin
writeln('Usage: ',extractfilename(paramstr(0)),' URL1 URL2 etc...');
writeln(
'To enable/disable beeping type ',extractfilename(paramstr(0)),' /BEEP [/OFF] [freq] [duration]');
writeln(
'To enable/disable sound type ',extractfilename(paramstr(0)),' /SOUND [/OFF]');
writeln;writeln('App icon by Icons8');
write('Press enter to quit...');readln;exitprocess(0);
end;
writeln('URL Notifier v1.0');
if stricomp(pchar(paramstr(1)),'/DELETE')=0then begin
if regdeletekey(hkey_current_user,'Software\Justin\URL Notifier\Checksums')<>
error_success then writeln('Deletion failed.');exitprocess(0);
end;
regcreatekey(hkey_current_user,'Software\Justin\URLNotifier',hkapp);
zeromemory(@currentfn,sizeof(currentfn));
if regcreatekey(HKEY_LOCAL_MACHINE,
'SYSTEM\CurrentControlSet\Services\EventLog\Application\URLNotifier',hkel)=
error_success then begin
eltypes:=EVENTLOG_AUDIT_FAILURE or EVENTLOG_AUDIT_SUCCESS or
EVENTLOG_WARNING_TYPE or eventlog_information_type;
regsetvalueex(hkel,'TypesSupported',0,reg_dword,@eltypes,4);regsetvalueex(hkel,
'EventMessageFile',0,reg_sz,pchar(paramstr(0)),(1+length(paramstr(0))*
sizeof(char)));regclosekey(hkel);rs:=sizeof(elcomputer);strcopy(elcomputer,
'\\127.0.0.1');regqueryvalueex(hkapp,'EventLogComputer',nil,nil,@elcomputer,@rs);
writeevent(log_startup,eventlog_information_type,0,[],nil);
end else writeln('Notice: Could not register eventlog, please run as admin first');
if stricomp('/BEEP',pchar(paramstr(1)))=0then begin if stricomp(pchar(paramstr(2)),
'/OFF')=0then soundmode :=0 else soundmode:=makelong(makeword(sound_mode_beep,
strtointdef(paramstr(3),5)),strtointdef(paramstr(2),1000));writeln(Syserrormessage(
regsetvalueex(hkapp,'SoundMode',0,reg_dword,@soundmode,4)));regclosekey(hkapp);
exitprocess(0);
end;
if stricomp('/SOUND',pchar(paramstr(1)))=0then begin if stricomp(pchar(paramstr(2)),
'/OFF')=0then soundmode :=0 else soundmode:=SOUND_MODE_PLAY_ONCE;
writeln(Syserrormessage(regsetvalueex(hkapp,'SoundMode',0,reg_dword,@soundmode,4)));
regclosekey(hkapp);
exitprocess(0);
end;
writeln(datetimetostr(now),' - Started, Monitoring ',paramcount,' URL(s)');
regcreatekey(hkapp,'CheckSums',checksumkey);
SetConsoleCtrlHandler(@finishmonitoring,true);
while true do
begin
rs:=4;soundmode:=SOUND_MODE_OFF;Regqueryvalueex(hkapp,'SoundMode',nil,nil,
@soundmode,@rs);rs:=4;sleeptime:=6;regqueryvalueeX(hkapp,'SleepTime',nil,nil,
@sleeptime,@rs);
for i:=1to paramcount do begin rs:=4;currentcrc:=0;regqueryvalueex(checksumkey,
pchar(paramstr(i)),nil,nil,@currentcrc,@rs);herr:=urldownloadtocachefile(nil,
PChar(paramstr(i)),currentfn,max_path,0,nil);if herr=s_ok then begin
calccrc32(currentfn,newcrc);if(newcrc<>currentcrc)and(currentcrc>0)and(newcrc>0)
then begin case lobyte(loword(soundmode))of
sound_mode_beep:beep(hiword(soundmode),hibyte(loword(soundmode))*1000);
sound_mode_play_once:playsound('OnChange.wav',0,snd_filename or snd_async);
end; writeevent(log_changed_found,eventlog_audit_success,0,[pchar(paramstr(i))],
nil);writeln(datetimetostr(now),' - Changed: ',paramstr(1),#32,geturlsize,
' CRC32:',inttohex(newcrc,8));case messagebox(0,strlfmt(mbtext,1024,
'The file at the following URL has changed:'#13#10'%s'#13#10'View the file?',[
paramstr(1)]),'URL Notifier',mb_iconinformation or mb_yesno)of
idyes:begin seerr:=shellexecute(0,nil,pchar(paramstr(i)),nil,nil,sw_show);if
seerr<33then writeln(datetimetostr(now),' - LaunchError:',syserrormessage(seerr));
end;
idno:asm nop end;
end;end;end else begin writeln(datetimetostr(now),' - Error(',herr,'): ',
paramstr(i));writeevent(log_failed_request,EVENTLOG_AUDIT_FAILURE,sizeof(herr),[
pchar(paramstr(i))],@herr);
end;
if regsetvalueex(checksumkey,pchar(paramstr(i)),0,reg_dword,@newcrc,4)<>
error_success then writeevent(log_regfailed,eventlog_warning_type,0,[],nil);
end;
sleep(sleeptime*10000);
end;

Published by Justin Roeder

I am an electronics engineer and computer programmer that has autism. I learned by myself

Leave a comment

Your email address will not be published. Required fields are marked *