I write a application hide a of string within a .docx file.
A Docx file comprises of a collection of XML files that are contained inside a ZIP archive. So, My program treat that file like a zip file and hide secret string in it.
After research, I found a way to insert data to ZIP archive.
A Secret String is injected after a file section right before the 1st central directory header. After that, a pointer in an end of central directory record is updated to compensate the shift of the central directory header.
My output docx file work fine with typical file archivers (7-zip, WinRAR, File Roller, &c) or file managers (Windows Explorer).
But when I open my output docx file with Microsoft Word it said:
Here is link for input and output file
What step did I wrong or missing?
Related
I created a logic app to export some data to a *.csv file.
Data which will be exported contains german umlauts.
I read all the needed values into variables which are then concatenated and added to an array.
Finally I get an array of semicolon separated strings with the values in it.
This result will then be added to an email as file attachment:
All the values are handled correctly in the Logic App and are correct in the *.csv file but as soon I open the csv with Excel, the umlauts are not shown correctly anymore.
Is there a way to create explicitly a file with the correct encoding within the logic app and add the file to the email instead of the ExportString?
Or can I somehow encode the content of the ExportString-Variable?
Any hints?
I have reproduced in my environment and followed below steps to get correct output in CSV file:
My input is:
I have sent the data into CSV table as below and then created a file in file share as below:
Then when i open my file share and download the content from there i got different output as you got:
Then I opened my Azure Storage explorer and downloaded it as below:
When i open in notepad the downloaded file:
I get the correct output, try to do in this way
And when i save it as hello.csv and keep utf-8 with bom like below:
Then I get the correct output in csv as well:
I'm looking for a tool that can extract files by searching aggressively through a ZIP archive. The compressed files are preceded with LFHs but no CDHs are present. Unzip outputs an empty folder.
I found one called 'binwalk' but even though it finds the hidden files inside ZIP archives it seems not to know how to extract them.
Thank You in advance.
You can try sunzip. It reads the zip file as a stream, and will extract files as it encounters the local headers and compressed data.
Use the -r option to retain the files decompressed in the event of an error. You will be left with a temporary directory starting with _z containing the extracted files, but with temporary, random names.
Using an existing SSIS package, I was trying to import .xlsx files we received from a client. I received the error message:
External table is not in the expected format
These files will open in XL
When I use XL (currently XL2010) to Save As... the file without making any changes:
The new file imports just fine
The new file is 330% the size of the original file
When changing .xlsx to .zip and investigating the contents with WinZip:
The original file only has 4 .xml files and a _rels folder (with 2 .rels files):
The new file has the expected .xlsx contents:
Does anyone know what kind of file this could be?
It would be nice to develop my SSIS package to work with these original files, without having to open and re-save each file. There are only 12 files, so if there are no other options, opening/saving each file is not that big of deal...and I could automate it with VBA going forward.
Thanks for any help anyone can provide,
CTB
There are many Excel file formats.
The file you are trying to import may have another excel format but the extension is changed to .xlsx (it could be edited by someone else) , or it could be created with a different Excel version.
There is a Third-Part application called TridNet File Identifier which is an utility designed to identify file types from their binary signatures. you can use it to specify the real extension of the specified file.
Also after a simple search on External table is not in the expected format this error is thrown when the definition (or version) of the excel files supported in the connection string is different from the file selected. Check the connection string used in the excel connection manager. It might help to identify the version of the file.
I have a module which is supposed to extract the email attachment and place it at a specific location. The code creates the POP3 Client to fetch the mail and has been using EMAIL::MIME::Attachment::Stripper module to extract the attachment as below.
my $mail=$pop->HeadAndBody($i);
my $parsed = Email::MIME->new($mail);
my $stripper = Email::MIME::Attachment::Stripper->new($parsed);
my #attachments = $stripper->attachments;
foreach my $a(#attachments)
{
next if $a->{content_type} !~ /octet-stream/i;
my $f = new IO::File "C:/MAIL_PARSING_DATA/" . "<filename>.<file-extension>", "w" or die "Can not create file!";
print $f $a->{payload};
goto EXITPOINT;
}
The code is working fine for the standard files identified by the Perl module, like spreadsheet etc. But not for the specific mail which has a zipped Excel file as an attachment. While extracting the file the identified content_type by the Perl script for this file is application/octet-stream. While extracting the file using the above-mentioned code the file seems to be broken because:
The file is not getting opened through WinZip, WinRAR or 7-Zip.
File size for the file extracted through this script is slightly different than the same file extracted using Outlook.
Kindly provide some input on the issue.
The problem is here
next if $a->{content_type} !~ /octet-stream/i;
zip have content type as application/zip
#NeoNox, Thanks for the response. But the perl system identifies the file as octet-stream only, not with application/zip.
Anyways, I could find the solution.
I could resolve the problem by writing the file in the binary mode(mentioning explicitely as below:
binmode $fh;
Here the file is being writting in the binary mode So I don't get the output as the broken file.
I am finding the same issue.
XLSX files are not seen as attachments.
I am using IMAP.
It will download the email body, any jpgs or pngs etc but does not find the attached xlsx even when in an email that has attachments that are downloaded.
I'm trying to build a suffix tree from a .docx file.
So first I unzipped the .docx file and then again created a .docx file with out compressing it. I used ICSharpCode.SharpZipLib.Zip.ZipOutputStream.SetLevel(0) method. Here I used C#.
This uncompressed .docx files can be opened without any error.
For the next step I used vc++. By using ifstream.open ("uncompressed.docx", ios::binary ); method I tried to open the file and store the content in a char array by using ifstream.read ( (char *)T, MAX_LENGTH - 1 ) method. But I could not get the actual content of uncompressed.docx file. When I tried to print the content of the char array(T) it printed some formatting tags rather than printing the actual text content of the uncompressed.docx.
I could not figure out what is the actual file that ifstream.open() method opens.It is not the document.xml file.
Please tell me how to get the actual text content from the uncompressed.docx file using VC++.