On Thu, 31 Jul 2008, Szakáts Viktor wrote:
Hi Viktor,
> Okay I got it now, so a special CRC32 is (or may be) used
> to check if the result was indeed correct. [ Now I wonder,
> why the normal CRC32 - which is calculated anyway - wasn't
> good for this purpose for zips, and they've opted for a
> s
Hi Przemek,
Now the remaining mystery is how 7-Zip could extract
the wrong file anyway :)
It was not wrong. Just simply 7-Zip like myunzip does not
compare CRC32 stored in compressed header with CRC32 in
file ZIP entry ignoring it.
Okay I got it now, so a special CRC32 is (or may be) used
On Thu, 31 Jul 2008, Szakáts Viktor wrote:
Hi Viktor,
> Now the remaining mystery is how 7-Zip could extract
> the wrong file anyway :)
It was not wrong. Just simply 7-Zip like myunzip does not
compare CRC32 stored in compressed header with CRC32 in
file ZIP entry ignoring it.
> BTW, I wonder i
Hi Przemek,
Many thanks for the hunt and fix, it now works perfectly.
Now the remaining mystery is how 7-Zip could extract
the wrong file anyway :)
BTW, I wonder if we couldn't rather use hb_fs*() functions
instead of fopen/fread. (in places where this wouldn't
badly affect performance, like hb
On Thu, 31 Jul 2008, Przemyslaw Czerpak wrote:
Hi Viktor,
> You do not have too. I've just located the reason of problem.
> Just simply I was not writting anything for DOS/Windows for
> too long time. On this systems fopen() without "b" flag strip
> '\r' from the stream so CRC was wrongly calcula
On Thu, 31 Jul 2008, Szakáts Viktor wrote:
Hi Viktor,
> For these tests I was using BCC 5.5.1, with these
> switches (notably debug switches):
> C_USR=-DUNICODE -v -y
> I've now retried with a fully default build, with
> no custom switches, but the effect is still there.
> Even more strangely, I'
Hi Przemek,
For these tests I was using BCC 5.5.1, with these
switches (notably debug switches):
C_USR=-DUNICODE -v -y
I've now retried with a fully default build, with
no custom switches, but the effect is still there.
Even more strangely, I'm getting the same (wrong)
results with an MSVS 2005
On Thu, 31 Jul 2008, Szakáts Viktor wrote:
Hi Viktor,
> Now I'm also confused, because myunzip cannot extra it either
> (created a zero length file).
> Now I did the .zip again (theoretically with no difference),
> I'm attaching it. myunzip is able to unzip it, but unzip isn't.
My unzip too. It
Some additional info:
- 7-Zip 4.57 GUI is able to extract myzip.prg from hello.zip with
'abc' password.
- unzip.exe is able to extract sample encrypted .zip created with
zip.exe.
[[[ BTW, 7z support would be nice in Harbour since it hasn't some of the
limits of .zip and std encryption is a l
: "Przemyslaw Czerpak" <[EMAIL PROTECTED]>
To: "Harbour Project Main Developer List."
Sent: Thursday, July 31, 2008 6:24 PM
Subject: Re: [Harbour] 2008-07-31 14:07 UTC+0200 Przemyslaw
Czerpak(druzus/at/priv.onet.pl)
On Thu, 31 Jul 2008, Szakáts Viktor wrote:
Hi Vik
On Thu, 31 Jul 2008, Szakáts Viktor wrote:
Hi Viktor,
> Now, I was suspecting that an older hbmzip.lib is picked
> up, but I did some test to ensure this is not the case,
> besides renaming my production harbour binary dir
> (but it's not in the path anyway).
I tired to extract hello.zip you att
, 2008 4:42 PM
Subject: Re: [Harbour] 2008-07-31 14:07 UTC+0200 Przemyslaw
Czerpak(druzus/at/priv.onet.pl)
Hi Przemek, Viktor,
Perhaps these considerations about my test.zip created with hbmzip can
help :
1) Winzip shows all files in zip as cripted ("*").
2) If I set the correct passw
On Thu, 31 Jul 2008, Szakáts Viktor wrote:
Hi Viktor,
> I did these, after doing a complete checkout to an empty dir
> and a full rebuild:
Maybe a stupid question but did you recompile myzip.prg?
It's not create automatically.
> del hello.zip
> myzip hello.zip myzip.tds --pass abc
> unzip hello
ord.
Best regards
Juan
- Original Message -
From: "Szakáts Viktor" <[EMAIL PROTECTED]>
To: "Harbour Project Main Developer List."
Sent: Thursday, July 31, 2008 4:29 PM
Subject: Re: [Harbour] 2008-07-31 14:07 UTC+0200 Przemyslaw
Czerpak(druzus/at/priv.onet.pl)
Hi Przemek,
1) I did a quick test, but unzip doesn't seem to accept
any passwords for something zipped with myzip.
Please be sure that you are using current SVN code.
I made test with UNZIP in my linux box and PKUNZIP
in DOS emulator and both nicely decompress password
encrypted archives
On Thu, 31 Jul 2008, Szakáts Viktor wrote:
Hi Viktor,
> 1) I did a quick test, but unzip doesn't seem to accept
>any passwords for something zipped with myzip.
Please be sure that you are using current SVN code.
I made test with UNZIP in my linux box and PKUNZIP
in DOS emulator and both nice
Hi Przemek,
1) I did a quick test, but unzip doesn't seem to accept
any passwords for something zipped with myzip.
Also, I've zipped something with a password using zip,
and tried to unzip it with myunzip, but it didn't
work either. Maybe I'm doing something wrong.
One correction: my
Hi Przemek,
1) I did a quick test, but unzip doesn't seem to accept
any passwords for something zipped with myzip.
Also, I've zipped something with a password using zip,
and tried to unzip it with myunzip, but it didn't
work either. Maybe I'm doing something wrong.
2) I'm not sure I
2008-07-31 14:07 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl)
* harbour/contrib/hbmzip/zip.c
! set valid ZIP signature in header file (2.0)
* harbour/contrib/hbmzip/hbmzip.c
! fixed ZIP encryption header by adding CRC32 checksum
Now other tools should properly recognize p
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