Roland Gruber
parent
70b6dde738
commit
4c6772d5af
|
|
@ -0,0 +1,286 @@
|
||||||
|
<HTML>
|
||||||
|
<HEAD>
|
||||||
|
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
|
||||||
|
<TITLE>FAQ</TITLE>
|
||||||
|
<LINK TYPE="text/css" REL="stylesheet" HREF="fpdf.css">
|
||||||
|
</HEAD>
|
||||||
|
<BODY>
|
||||||
|
<H2>FAQ</H2>
|
||||||
|
<B>1.</B> <A HREF='#1'>What's exactly the license of FPDF? Are there any usage restrictions?</A><BR>
|
||||||
|
<B>2.</B> <A HREF='#2'>When I try to create a PDF, a lot of weird characters show on the screen. Why?</A><BR>
|
||||||
|
<B>3.</B> <A HREF='#3'>I try to generate a PDF and IE displays a blank page. What happens?</A><BR>
|
||||||
|
<B>4.</B> <A HREF='#4'>I send parameters using the POST method and the values don't appear in the PDF.</A><BR>
|
||||||
|
<B>5.</B> <A HREF='#5'>When I use a PHP session, IE doesn't display my PDF any more but asks me to download it.</A><BR>
|
||||||
|
<B>6.</B> <A HREF='#6'>When I'm on SSL, IE can't open the PDF.</A><BR>
|
||||||
|
<B>7.</B> <A HREF='#7'>When I execute a script I get the message "FPDF error: Don't alter the locale before including class file".</A><BR>
|
||||||
|
<B>8.</B> <A HREF='#8'>I try to put a PNG and Acrobat says "There was an error processing a page. A drawing error occurred".</A><BR>
|
||||||
|
<B>9.</B> <A HREF='#9'>I encounter the following error when I try to generate a PDF: Warning: Cannot add header information - headers already sent by (output started at script.php:X)</A><BR>
|
||||||
|
<B>10.</B> <A HREF='#10'>I try to display a variable in the Header method but nothing prints.</A><BR>
|
||||||
|
<B>11.</B> <A HREF='#11'>I defined the Header and Footer methods in my PDF class but nothing appears.</A><BR>
|
||||||
|
<B>12.</B> <A HREF='#12'>I can't make line breaks work. I put \n in the string printed by MultiCell but it doesn't work.</A><BR>
|
||||||
|
<B>13.</B> <A HREF='#13'>I try to put the euro symbol but it doesn't work.</A><BR>
|
||||||
|
<B>14.</B> <A HREF='#14'>I draw a frame with very precise dimensions, but when printed I notice some differences.</A><BR>
|
||||||
|
<B>15.</B> <A HREF='#15'>I'd like to use the whole surface of the page, but when printed I always have some margins. How can I get rid of them?</A><BR>
|
||||||
|
<B>16.</B> <A HREF='#16'>What's the limit of the file sizes I can generate with FPDF?</A><BR>
|
||||||
|
<B>17.</B> <A HREF='#17'>Can I modify a PDF with FPDF?</A><BR>
|
||||||
|
<B>18.</B> <A HREF='#18'>I'd like to make a search engine in PHP and index PDF files. Can I do it with FPDF?</A><BR>
|
||||||
|
<B>19.</B> <A HREF='#19'>Can I convert an HTML page to PDF with FPDF?</A><BR>
|
||||||
|
<B>20.</B> <A HREF='#20'>Can I concatenate PDF files with FPDF?</A><BR>
|
||||||
|
<BR><BR>
|
||||||
|
<P><A NAME='1'></A><B>1.</B> <FONT CLASS='st'>What's exactly the license of FPDF? Are there any usage restrictions?</FONT></P>
|
||||||
|
FPDF is Freeware (it is stated at the beginning of the source file). There is no usage
|
||||||
|
restriction. You may embed it freely in your application (commercial or not), with or
|
||||||
|
without modification. You may redistribute it, too.
|
||||||
|
<P><A NAME='2'></A><B>2.</B> <FONT CLASS='st'>When I try to create a PDF, a lot of weird characters show on the screen. Why?</FONT></P>
|
||||||
|
These "weird" characters are in fact the actual content of your PDF. This behaviour is a bug of
|
||||||
|
IE. When it first receives an HTML page, then a PDF from the same URL, it displays it directly
|
||||||
|
without launching Acrobat. This happens frequently during the development stage: on the least
|
||||||
|
script error, an HTML page is sent, and after correction, the PDF arrives.
|
||||||
|
<BR>
|
||||||
|
To solve the problem, simply quit and restart IE. You can also go to another URL and come
|
||||||
|
back.
|
||||||
|
<BR>
|
||||||
|
To avoid this kind of inconvenience during the development, you can generate the PDF directly
|
||||||
|
to a file and open it through the explorer.
|
||||||
|
<P><A NAME='3'></A><B>3.</B> <FONT CLASS='st'>I try to generate a PDF and IE displays a blank page. What happens?</FONT></P>
|
||||||
|
First of all, check that you send nothing to the browser after the PDF (not even a space or a
|
||||||
|
carriage return). You can put an exit statement just after the call to the Output() method to
|
||||||
|
be sure.
|
||||||
|
<BR>
|
||||||
|
If it still doesn't work, it means you're a victim of the "blank page syndrome". IE used in
|
||||||
|
conjunction with the Acrobat plug-in suffers from numerous bugs, in all versions. You should
|
||||||
|
test your application with as many IE versions as possible (at least if you're on the Internet).
|
||||||
|
The problem occurs mostly with the POST method, so it is strongly advised to avoid it (all the
|
||||||
|
more that it causes other problems, see the next question). The GET works better but may fail
|
||||||
|
when the URL becomes too long: don't use a query string with more than 45 characters. However, a
|
||||||
|
tip exists to exceed this limit: end the URL with .pdf, which tricks IE. If you use a form, you
|
||||||
|
can add a hidden field at the last position:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
<INPUT TYPE="HIDDEN" NAME="ext" VALUE=".pdf">
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
The usage of PHP sessions also often causes trouble (avoid using HTTP headers preventing caching).
|
||||||
|
See question 5 for a workaround.
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
To avoid all these problems in a reliable manner, two main techniques exist:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- Disable the plug-in and use Acrobat as a helper application. To do this, launch Acrobat; in
|
||||||
|
the File menu, Preferences, General, uncheck the option "Web Browser Integration" (for Acrobat
|
||||||
|
5: Edit, Preferences, Options, "Display PDF in Browser"). Then, the next time you load a PDF in
|
||||||
|
IE, it displays the dialog box "Open it" or "Save it to disk". Uncheck the option "Always ask
|
||||||
|
before opening this type of file" and choose Open. From now on, PDF files will open
|
||||||
|
automatically in an external Acrobat window.
|
||||||
|
<BR>
|
||||||
|
The drawback of the method is that you need to alter the client configuration, which you can do
|
||||||
|
in an intranet environment but not for the Internet.
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- Use a redirection technique. It consists in generating the PDF in a temporary file on the
|
||||||
|
server and redirect the client on it (by using JavaScript, not the Location HTTP header which
|
||||||
|
also causes trouble). For instance, at the end of the script, you can put the following:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
//Determine a temporary file name in the current directory<BR>
|
||||||
|
$file=basename(tempnam(getcwd(),'tmp'));<BR>
|
||||||
|
//Save PDF to file<BR>
|
||||||
|
$pdf->Output($file);<BR>
|
||||||
|
//JavaScript redirection<BR>
|
||||||
|
echo "<HTML><SCRIPT>document.location='getpdf.php?f=$file';</SCRIPT></HTML>";
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
Then create the getpdf.php file with this:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
<?php<BR>
|
||||||
|
$f=$HTTP_GET_VARS['f'];<BR>
|
||||||
|
//Check file (don't skip it!)<BR>
|
||||||
|
if(substr($f,0,3)!='tmp' or strpos($f,'/') or strpos($f,'\\'))<BR>
|
||||||
|
die('Incorrect file name');<BR>
|
||||||
|
if(!file_exists($f))<BR>
|
||||||
|
die('File does not exist');<BR>
|
||||||
|
//Handle special IE request if needed<BR>
|
||||||
|
if($HTTP_SERVER_VARS['HTTP_USER_AGENT']=='contype')<BR>
|
||||||
|
{<BR>
|
||||||
|
Header('Content-Type: application/pdf');<BR>
|
||||||
|
exit;<BR>
|
||||||
|
}<BR>
|
||||||
|
//Output PDF<BR>
|
||||||
|
Header('Content-Type: application/pdf');<BR>
|
||||||
|
Header('Content-Length: '.filesize($f));<BR>
|
||||||
|
readfile($f);<BR>
|
||||||
|
//Remove file<BR>
|
||||||
|
unlink($f);<BR>
|
||||||
|
exit;<BR>
|
||||||
|
?>
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
This method works in most cases but IE6 can still experience trouble. The "ultimate" method
|
||||||
|
consists in redirecting directly to the temporary file. The file name must therefore end with .pdf:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
//Determine a temporary file name in the current directory<BR>
|
||||||
|
$file=basename(tempnam(getcwd(),'tmp'));<BR>
|
||||||
|
rename($file,$file.'.pdf');<BR>
|
||||||
|
$file.='.pdf';<BR>
|
||||||
|
//Save PDF to file<BR>
|
||||||
|
$pdf->Output($file);<BR>
|
||||||
|
//JavaScript redirection<BR>
|
||||||
|
echo "<HTML><SCRIPT>document.location='$file';</SCRIPT></HTML>";
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
This method turns the dynamic PDF into a static one and avoids all troubles. But you have to do
|
||||||
|
some cleaning in order to delete the temporary files. For instance:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
function CleanFiles($dir)<BR>
|
||||||
|
{<BR>
|
||||||
|
//Delete temporary files<BR>
|
||||||
|
$t=time();<BR>
|
||||||
|
$h=opendir($dir);<BR>
|
||||||
|
while($file=readdir($h))<BR>
|
||||||
|
{<BR>
|
||||||
|
if(substr($file,0,3)=='tmp' and substr($file,-4)=='.pdf')<BR>
|
||||||
|
{<BR>
|
||||||
|
$path=$dir.'/'.$file;<BR>
|
||||||
|
if($t-filemtime($path)>3600)<BR>
|
||||||
|
@unlink($path);<BR>
|
||||||
|
}<BR>
|
||||||
|
}<BR>
|
||||||
|
closedir($h);<BR>
|
||||||
|
}
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
This function deletes all files of the form tmp*.pdf older than an hour in the specified
|
||||||
|
directory. You may call it where you want, for instance in the script which generates the PDF.
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
Remark: it is necessary to open the PDF in a new window, as you can't go backwards due to the
|
||||||
|
redirection.
|
||||||
|
<P><A NAME='4'></A><B>4.</B> <FONT CLASS='st'>I send parameters using the POST method and the values don't appear in the PDF.</FONT></P>
|
||||||
|
It's a problem affecting some versions of IE (especially the first 5.5). See the previous
|
||||||
|
question for the ways to work around it.
|
||||||
|
<P><A NAME='5'></A><B>5.</B> <FONT CLASS='st'>When I use a PHP session, IE doesn't display my PDF any more but asks me to download it.</FONT></P>
|
||||||
|
It's a problem affecting some versions of IE. To work around it, add the following line before
|
||||||
|
session_start():
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
session_cache_limiter('private');
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
or do a redirection as explained in question 3.
|
||||||
|
<P><A NAME='6'></A><B>6.</B> <FONT CLASS='st'>When I'm on SSL, IE can't open the PDF.</FONT></P>
|
||||||
|
The problem may be fixed by adding this line:<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
Header('Pragma: public');
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
|
||||||
|
<P><A NAME='7'></A><B>7.</B> <FONT CLASS='st'>When I execute a script I get the message "FPDF error: Don't alter the locale before including class file".</FONT></P>
|
||||||
|
When the decimal separator is configured as a comma before including a file, there is a
|
||||||
|
<A HREF="http://bugs.php.net/bug.php?id=17105" TARGET="_blank">bug</A> in some PHP versions and decimal
|
||||||
|
numbers get truncated. Therefore you shouldn't make a call to setlocale() before including the class.
|
||||||
|
On Unix, you shouldn't set the LC_ALL environment variable neither, for it is equivalent to a
|
||||||
|
setlocale() call.
|
||||||
|
<P><A NAME='8'></A><B>8.</B> <FONT CLASS='st'>I try to put a PNG and Acrobat says "There was an error processing a page. A drawing error occurred".</FONT></P>
|
||||||
|
Acrobat 5 has a bug and is unable to display transparent monochrome images (i.e. with 1 bit per
|
||||||
|
pixel). Remove transparency or save your image in 16 colors (4 bits per pixel) or more.
|
||||||
|
<P><A NAME='9'></A><B>9.</B> <FONT CLASS='st'>I encounter the following error when I try to generate a PDF: Warning: Cannot add header information - headers already sent by (output started at script.php:X)</FONT></P>
|
||||||
|
You must send nothing to the browser except the PDF itself: no HTML, no space, no carriage return,
|
||||||
|
neither before nor after. The script outputs something at line X.
|
||||||
|
<P><A NAME='10'></A><B>10.</B> <FONT CLASS='st'>I try to display a variable in the Header method but nothing prints.</FONT></P>
|
||||||
|
You have to use the <TT>global</TT> keyword, for instance:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
function Header()<BR>
|
||||||
|
{<BR>
|
||||||
|
global $title;<BR>
|
||||||
|
<BR>
|
||||||
|
$this->SetFont('Arial','B',15);<BR>
|
||||||
|
$this->Cell(0,10,$title,1,1,'C');<BR>
|
||||||
|
}
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
|
||||||
|
<P><A NAME='11'></A><B>11.</B> <FONT CLASS='st'>I defined the Header and Footer methods in my PDF class but nothing appears.</FONT></P>
|
||||||
|
You have to create an object from the PDF class, not FPDF:<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
$pdf=new PDF();
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
|
||||||
|
<P><A NAME='12'></A><B>12.</B> <FONT CLASS='st'>I can't make line breaks work. I put \n in the string printed by MultiCell but it doesn't work.</FONT></P>
|
||||||
|
You have to enclose your string with double quotes, not single ones.
|
||||||
|
<P><A NAME='13'></A><B>13.</B> <FONT CLASS='st'>I try to put the euro symbol but it doesn't work.</FONT></P>
|
||||||
|
The standard fonts have the euro character at position 128. You can define a constant like this
|
||||||
|
for convenience:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
define('EURO',chr(128));
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
Note: Acrobat 4 or higher is required to display euro.
|
||||||
|
<P><A NAME='14'></A><B>14.</B> <FONT CLASS='st'>I draw a frame with very precise dimensions, but when printed I notice some differences.</FONT></P>
|
||||||
|
To respect dimensions, you have to uncheck the option "Fit to page" in the print dialog box.
|
||||||
|
<P><A NAME='15'></A><B>15.</B> <FONT CLASS='st'>I'd like to use the whole surface of the page, but when printed I always have some margins. How can I get rid of them?</FONT></P>
|
||||||
|
All printers have physical margins (different depending on the model), it is therefore impossible
|
||||||
|
to remove them and print on the totality of the paper.
|
||||||
|
<P><A NAME='16'></A><B>16.</B> <FONT CLASS='st'>What's the limit of the file sizes I can generate with FPDF?</FONT></P>
|
||||||
|
There is no particular limit. There are some constraints however:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- The maximum memory size allocated to PHP scripts defaults to 8MB. For very big documents,
|
||||||
|
especially with images, this limit may be reached (the file being built into memory). The
|
||||||
|
parameter is configured in the php.ini file.
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- The maximum execution time allocated defaults to 30 seconds. This limit can of course be easily
|
||||||
|
reached. It is configured in php.ini and may be altered dynamically with set_time_limit().
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- Browsers generally have a 5 minute time-out. If you send the PDF directly to the browser and
|
||||||
|
reach the limit, it will be lost. It is therefore advised for very big documents to
|
||||||
|
generate them in a file, and to send some data to the browser from time to time (for instance
|
||||||
|
page 1, page 2... with flush() to force the output). When the document is finished, you can send
|
||||||
|
a redirection on it with JavaScript or create a link.
|
||||||
|
<BR>
|
||||||
|
Remark: even when the browser goes in time-out, the script may continue to run on the server.
|
||||||
|
<P><A NAME='17'></A><B>17.</B> <FONT CLASS='st'>Can I modify a PDF with FPDF?</FONT></P>
|
||||||
|
No.
|
||||||
|
<P><A NAME='18'></A><B>18.</B> <FONT CLASS='st'>I'd like to make a search engine in PHP and index PDF files. Can I do it with FPDF?</FONT></P>
|
||||||
|
No. But a GPL C utility does exist, pdftotext, which is able to extract the textual content from
|
||||||
|
a PDF. It is provided with the Xpdf package:<BR>
|
||||||
|
<BR>
|
||||||
|
<A HREF="http://www.foolabs.com/xpdf/" TARGET="_blank">http://www.foolabs.com/xpdf/</A>
|
||||||
|
<P><A NAME='19'></A><B>19.</B> <FONT CLASS='st'>Can I convert an HTML page to PDF with FPDF?</FONT></P>
|
||||||
|
No. But a GPL C utility does exist, htmldoc, which allows to do it and gives good results:<BR>
|
||||||
|
<BR>
|
||||||
|
<A HREF="http://www.easysw.com/htmldoc/" TARGET="_blank">http://www.easysw.com/htmldoc/</A>
|
||||||
|
<P><A NAME='20'></A><B>20.</B> <FONT CLASS='st'>Can I concatenate PDF files with FPDF?</FONT></P>
|
||||||
|
No. But a free C utility exists to perform this task:<BR>
|
||||||
|
<BR>
|
||||||
|
<A HREF="http://thierry.schmit.free.fr/dev/mbtPdfAsm/enMbtPdfAsm2.html" TARGET="_blank">http://thierry.schmit.free.fr/dev/mbtPdfAsm/enMbtPdfAsm2.html</A>
|
||||||
|
</BODY>
|
||||||
|
</HTML>
|
||||||
|
|
@ -0,0 +1,28 @@
|
||||||
|
The attribute "host" is only in objectclass account.
|
||||||
|
Unfortunatly "account" conflicts with
|
||||||
|
"inetorgperson". so there's no perfect way to use
|
||||||
|
both.
|
||||||
|
|
||||||
|
In order to get attribute host working you have to
|
||||||
|
modify schema/inetorgperson and include host:
|
||||||
|
|
||||||
|
|
||||||
|
# inetOrgPerson
|
||||||
|
# The inetOrgPerson represents people who are associated with an
|
||||||
|
# organization in some way. It is a structural class and is derived
|
||||||
|
# from the organizationalPerson which is defined in X.521 [X521].
|
||||||
|
objectclass ( 2.16.840.1.113730.3.2.2
|
||||||
|
NAME 'inetOrgPerson'
|
||||||
|
DESC 'RFC2798: Internet Organizational Person'
|
||||||
|
SUP organizationalPerson
|
||||||
|
STRUCTURAL
|
||||||
|
MAY (
|
||||||
|
audio $ businessCategory $ carLicense $ departmentNumber $
|
||||||
|
displayName $ employeeNumber $ employeeType $ givenName $
|
||||||
|
homePhone $ homePostalAddress $ initials $ jpegPhoto $
|
||||||
|
labeledURI $ mail $ manager $ mobile $ o $ pager $
|
||||||
|
photo $ roomNumber $ secretary $ uid $ userCertificate $
|
||||||
|
x500uniqueIdentifier $ preferredLanguage $
|
||||||
|
userSMIMECertificate $ userPKCS12 $ host )
|
||||||
|
)
|
||||||
|
|
||||||
|
|
@ -0,0 +1,56 @@
|
||||||
|
lamdaemon.pl is used to modify quota and homedirs
|
||||||
|
on a remote or local host via ssh.
|
||||||
|
If you want wo use it you have to set up some
|
||||||
|
things to get it to work:
|
||||||
|
|
||||||
|
1. Setup values in LDAP Account Manager
|
||||||
|
* Set the remote or local host in the configuration
|
||||||
|
(e.g. 127.0.0.1)
|
||||||
|
* Path to lamdaemon.pl, e.g. /srv/www/htdocs/lam/lib/lamdaemon.pl
|
||||||
|
|
||||||
|
|
||||||
|
2. Set up sudo
|
||||||
|
The perl script has to run as root. Therefore we need
|
||||||
|
a wrapper, sudo.
|
||||||
|
Edit /etc/sudoers on host where homedirs or quotas should be used
|
||||||
|
and add the following line:
|
||||||
|
$admin All= NOPASSWD: $path
|
||||||
|
$admin is the adminuser from LAM and $path
|
||||||
|
is the path to lamdaemon.pl e.g. $admin All= NOPASSWD: /srv/www/htdocs/lam/lib/lamdaemon.pl
|
||||||
|
At the moment the password is a paramteter of lamdaemon.pl
|
||||||
|
therefore you should disable logging so the password does not
|
||||||
|
appear in any logfile.
|
||||||
|
This can be done by adding the following line to /etc/sudoers:
|
||||||
|
Defaults:$admin !syslog
|
||||||
|
|
||||||
|
3. Set up Perl
|
||||||
|
We need some external Perl modules, Quota and Net::SSH::Perl
|
||||||
|
To install them, run:
|
||||||
|
perl -MCPAN -e shell
|
||||||
|
install Quota
|
||||||
|
install Net::SSH::Perl
|
||||||
|
|
||||||
|
4. Test lamdaemon.pl
|
||||||
|
I've installed a test-function in lamdaemon.pl. Please run lamdaemon.pl
|
||||||
|
with the following attributes to test it:
|
||||||
|
lamdaemon.pl $ssh-server $lam_path_on_host $admin-username $admin-password *test
|
||||||
|
$ssh-server is the remote host lamdaemon.pl should be run on
|
||||||
|
$lam_path_on_host is the path to lamdaemon.pl on remote host
|
||||||
|
$admin-username is the name of the user which is allowed to run lamdaemon.pl
|
||||||
|
as root. It is the same user as in /etc/sudoers
|
||||||
|
$admin-password is the password of the admin user
|
||||||
|
*test is the command which tells lamdaemon.pl to test settings
|
||||||
|
|
||||||
|
You have to run the command as the user your webserver is running, e.g.
|
||||||
|
|
||||||
|
wwwrun@tilo:/srv/www/htdocs/lam/lib> /srv/www/htdocs/lam/lib/lamdaemon.pl \
|
||||||
|
127.0.0.1 /srv/www/htdocs/lam/lib/lamdaemon.pl root secret *test
|
||||||
|
|
||||||
|
You should get the following response:
|
||||||
|
Net::SSH::Perl successfully installed.
|
||||||
|
Perl quota module successfully installed.
|
||||||
|
If you have not seen any error lamdaemon.pl should be set up successfully.
|
||||||
|
|
||||||
|
Now everything should work fine.
|
||||||
|
|
||||||
|
Please send a mail to TiloLutz@gmx.de if you have any suggestions.
|
||||||
|
|
@ -0,0 +1,21 @@
|
||||||
|
Some basic hints to configure the OpenLDAP server:
|
||||||
|
|
||||||
|
SIZELIMIT: OpenLDAP allows by default 500 return values per search, if you have more users/groups/hosts
|
||||||
|
change this in slapd.conf: e.g. "sizelimit 10000" or "sizelimit -1" for unlimited return values.
|
||||||
|
|
||||||
|
INDICES: Indices will improve the performance when searching for entries in the LDAP directory.
|
||||||
|
The following indices are recommended:
|
||||||
|
|
||||||
|
index objectClass eq
|
||||||
|
index default sub
|
||||||
|
index uidNumber eq
|
||||||
|
index gidNumber eq
|
||||||
|
index memberUid eq
|
||||||
|
index cn,sn,uid,displayName pres,sub,eq
|
||||||
|
# Samba 2.x
|
||||||
|
index rid eq
|
||||||
|
index primaryGroupID eq
|
||||||
|
# Samba 3.x
|
||||||
|
index sambaSID eq
|
||||||
|
index sambaPrimaryGroupSID eq
|
||||||
|
index sambaDomainName eq
|
||||||
|
|
@ -0,0 +1,36 @@
|
||||||
|
|
||||||
|
1. Use of SSL
|
||||||
|
|
||||||
|
The data which is transfered between you and LAM is very sensitive.
|
||||||
|
Please always use SSL encrypted connections between LAM and your browser to
|
||||||
|
protect yourself against network sniffers.
|
||||||
|
|
||||||
|
|
||||||
|
2. LDAP+SSL and TLS
|
||||||
|
|
||||||
|
LAM should start TLS automatically if possible. LDAP+SSL will be used if you use
|
||||||
|
ldaps://servername in your configuration profile.
|
||||||
|
|
||||||
|
|
||||||
|
3. Chrooted servers
|
||||||
|
|
||||||
|
If your server is chrooted and you have no access to /dev/random or /dev/urandom
|
||||||
|
this can be a security risk. LAM stores your LDAP password encrypted in the session.
|
||||||
|
LAM uses rand() to generate the key if /dev/random and /dev/urandom are not accessible.
|
||||||
|
Therefore the key can be easily guessed.
|
||||||
|
An attaker needs read access to the session file (e.g. by another Apache instance) to
|
||||||
|
exploit this.
|
||||||
|
|
||||||
|
|
||||||
|
4. LDAP password protection
|
||||||
|
|
||||||
|
Your LDAP password is stored encrypted in the session file. The key and IV to decrypt
|
||||||
|
it are stored in two cookies. We use MCrypt/AES or Blowfish to encrypt the password.
|
||||||
|
|
||||||
|
|
||||||
|
5. Protection of new user passwords
|
||||||
|
|
||||||
|
These passwords are, if stored in the session file, encrypted with the same key and IV
|
||||||
|
as your LDAP password.
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -0,0 +1,286 @@
|
||||||
|
<HTML>
|
||||||
|
<HEAD>
|
||||||
|
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
|
||||||
|
<TITLE>FAQ</TITLE>
|
||||||
|
<LINK TYPE="text/css" REL="stylesheet" HREF="fpdf.css">
|
||||||
|
</HEAD>
|
||||||
|
<BODY>
|
||||||
|
<H2>FAQ</H2>
|
||||||
|
<B>1.</B> <A HREF='#1'>What's exactly the license of FPDF? Are there any usage restrictions?</A><BR>
|
||||||
|
<B>2.</B> <A HREF='#2'>When I try to create a PDF, a lot of weird characters show on the screen. Why?</A><BR>
|
||||||
|
<B>3.</B> <A HREF='#3'>I try to generate a PDF and IE displays a blank page. What happens?</A><BR>
|
||||||
|
<B>4.</B> <A HREF='#4'>I send parameters using the POST method and the values don't appear in the PDF.</A><BR>
|
||||||
|
<B>5.</B> <A HREF='#5'>When I use a PHP session, IE doesn't display my PDF any more but asks me to download it.</A><BR>
|
||||||
|
<B>6.</B> <A HREF='#6'>When I'm on SSL, IE can't open the PDF.</A><BR>
|
||||||
|
<B>7.</B> <A HREF='#7'>When I execute a script I get the message "FPDF error: Don't alter the locale before including class file".</A><BR>
|
||||||
|
<B>8.</B> <A HREF='#8'>I try to put a PNG and Acrobat says "There was an error processing a page. A drawing error occurred".</A><BR>
|
||||||
|
<B>9.</B> <A HREF='#9'>I encounter the following error when I try to generate a PDF: Warning: Cannot add header information - headers already sent by (output started at script.php:X)</A><BR>
|
||||||
|
<B>10.</B> <A HREF='#10'>I try to display a variable in the Header method but nothing prints.</A><BR>
|
||||||
|
<B>11.</B> <A HREF='#11'>I defined the Header and Footer methods in my PDF class but nothing appears.</A><BR>
|
||||||
|
<B>12.</B> <A HREF='#12'>I can't make line breaks work. I put \n in the string printed by MultiCell but it doesn't work.</A><BR>
|
||||||
|
<B>13.</B> <A HREF='#13'>I try to put the euro symbol but it doesn't work.</A><BR>
|
||||||
|
<B>14.</B> <A HREF='#14'>I draw a frame with very precise dimensions, but when printed I notice some differences.</A><BR>
|
||||||
|
<B>15.</B> <A HREF='#15'>I'd like to use the whole surface of the page, but when printed I always have some margins. How can I get rid of them?</A><BR>
|
||||||
|
<B>16.</B> <A HREF='#16'>What's the limit of the file sizes I can generate with FPDF?</A><BR>
|
||||||
|
<B>17.</B> <A HREF='#17'>Can I modify a PDF with FPDF?</A><BR>
|
||||||
|
<B>18.</B> <A HREF='#18'>I'd like to make a search engine in PHP and index PDF files. Can I do it with FPDF?</A><BR>
|
||||||
|
<B>19.</B> <A HREF='#19'>Can I convert an HTML page to PDF with FPDF?</A><BR>
|
||||||
|
<B>20.</B> <A HREF='#20'>Can I concatenate PDF files with FPDF?</A><BR>
|
||||||
|
<BR><BR>
|
||||||
|
<P><A NAME='1'></A><B>1.</B> <FONT CLASS='st'>What's exactly the license of FPDF? Are there any usage restrictions?</FONT></P>
|
||||||
|
FPDF is Freeware (it is stated at the beginning of the source file). There is no usage
|
||||||
|
restriction. You may embed it freely in your application (commercial or not), with or
|
||||||
|
without modification. You may redistribute it, too.
|
||||||
|
<P><A NAME='2'></A><B>2.</B> <FONT CLASS='st'>When I try to create a PDF, a lot of weird characters show on the screen. Why?</FONT></P>
|
||||||
|
These "weird" characters are in fact the actual content of your PDF. This behaviour is a bug of
|
||||||
|
IE. When it first receives an HTML page, then a PDF from the same URL, it displays it directly
|
||||||
|
without launching Acrobat. This happens frequently during the development stage: on the least
|
||||||
|
script error, an HTML page is sent, and after correction, the PDF arrives.
|
||||||
|
<BR>
|
||||||
|
To solve the problem, simply quit and restart IE. You can also go to another URL and come
|
||||||
|
back.
|
||||||
|
<BR>
|
||||||
|
To avoid this kind of inconvenience during the development, you can generate the PDF directly
|
||||||
|
to a file and open it through the explorer.
|
||||||
|
<P><A NAME='3'></A><B>3.</B> <FONT CLASS='st'>I try to generate a PDF and IE displays a blank page. What happens?</FONT></P>
|
||||||
|
First of all, check that you send nothing to the browser after the PDF (not even a space or a
|
||||||
|
carriage return). You can put an exit statement just after the call to the Output() method to
|
||||||
|
be sure.
|
||||||
|
<BR>
|
||||||
|
If it still doesn't work, it means you're a victim of the "blank page syndrome". IE used in
|
||||||
|
conjunction with the Acrobat plug-in suffers from numerous bugs, in all versions. You should
|
||||||
|
test your application with as many IE versions as possible (at least if you're on the Internet).
|
||||||
|
The problem occurs mostly with the POST method, so it is strongly advised to avoid it (all the
|
||||||
|
more that it causes other problems, see the next question). The GET works better but may fail
|
||||||
|
when the URL becomes too long: don't use a query string with more than 45 characters. However, a
|
||||||
|
tip exists to exceed this limit: end the URL with .pdf, which tricks IE. If you use a form, you
|
||||||
|
can add a hidden field at the last position:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
<INPUT TYPE="HIDDEN" NAME="ext" VALUE=".pdf">
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
The usage of PHP sessions also often causes trouble (avoid using HTTP headers preventing caching).
|
||||||
|
See question 5 for a workaround.
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
To avoid all these problems in a reliable manner, two main techniques exist:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- Disable the plug-in and use Acrobat as a helper application. To do this, launch Acrobat; in
|
||||||
|
the File menu, Preferences, General, uncheck the option "Web Browser Integration" (for Acrobat
|
||||||
|
5: Edit, Preferences, Options, "Display PDF in Browser"). Then, the next time you load a PDF in
|
||||||
|
IE, it displays the dialog box "Open it" or "Save it to disk". Uncheck the option "Always ask
|
||||||
|
before opening this type of file" and choose Open. From now on, PDF files will open
|
||||||
|
automatically in an external Acrobat window.
|
||||||
|
<BR>
|
||||||
|
The drawback of the method is that you need to alter the client configuration, which you can do
|
||||||
|
in an intranet environment but not for the Internet.
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- Use a redirection technique. It consists in generating the PDF in a temporary file on the
|
||||||
|
server and redirect the client on it (by using JavaScript, not the Location HTTP header which
|
||||||
|
also causes trouble). For instance, at the end of the script, you can put the following:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
//Determine a temporary file name in the current directory<BR>
|
||||||
|
$file=basename(tempnam(getcwd(),'tmp'));<BR>
|
||||||
|
//Save PDF to file<BR>
|
||||||
|
$pdf->Output($file);<BR>
|
||||||
|
//JavaScript redirection<BR>
|
||||||
|
echo "<HTML><SCRIPT>document.location='getpdf.php?f=$file';</SCRIPT></HTML>";
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
Then create the getpdf.php file with this:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
<?php<BR>
|
||||||
|
$f=$HTTP_GET_VARS['f'];<BR>
|
||||||
|
//Check file (don't skip it!)<BR>
|
||||||
|
if(substr($f,0,3)!='tmp' or strpos($f,'/') or strpos($f,'\\'))<BR>
|
||||||
|
die('Incorrect file name');<BR>
|
||||||
|
if(!file_exists($f))<BR>
|
||||||
|
die('File does not exist');<BR>
|
||||||
|
//Handle special IE request if needed<BR>
|
||||||
|
if($HTTP_SERVER_VARS['HTTP_USER_AGENT']=='contype')<BR>
|
||||||
|
{<BR>
|
||||||
|
Header('Content-Type: application/pdf');<BR>
|
||||||
|
exit;<BR>
|
||||||
|
}<BR>
|
||||||
|
//Output PDF<BR>
|
||||||
|
Header('Content-Type: application/pdf');<BR>
|
||||||
|
Header('Content-Length: '.filesize($f));<BR>
|
||||||
|
readfile($f);<BR>
|
||||||
|
//Remove file<BR>
|
||||||
|
unlink($f);<BR>
|
||||||
|
exit;<BR>
|
||||||
|
?>
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
This method works in most cases but IE6 can still experience trouble. The "ultimate" method
|
||||||
|
consists in redirecting directly to the temporary file. The file name must therefore end with .pdf:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
//Determine a temporary file name in the current directory<BR>
|
||||||
|
$file=basename(tempnam(getcwd(),'tmp'));<BR>
|
||||||
|
rename($file,$file.'.pdf');<BR>
|
||||||
|
$file.='.pdf';<BR>
|
||||||
|
//Save PDF to file<BR>
|
||||||
|
$pdf->Output($file);<BR>
|
||||||
|
//JavaScript redirection<BR>
|
||||||
|
echo "<HTML><SCRIPT>document.location='$file';</SCRIPT></HTML>";
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
This method turns the dynamic PDF into a static one and avoids all troubles. But you have to do
|
||||||
|
some cleaning in order to delete the temporary files. For instance:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
function CleanFiles($dir)<BR>
|
||||||
|
{<BR>
|
||||||
|
//Delete temporary files<BR>
|
||||||
|
$t=time();<BR>
|
||||||
|
$h=opendir($dir);<BR>
|
||||||
|
while($file=readdir($h))<BR>
|
||||||
|
{<BR>
|
||||||
|
if(substr($file,0,3)=='tmp' and substr($file,-4)=='.pdf')<BR>
|
||||||
|
{<BR>
|
||||||
|
$path=$dir.'/'.$file;<BR>
|
||||||
|
if($t-filemtime($path)>3600)<BR>
|
||||||
|
@unlink($path);<BR>
|
||||||
|
}<BR>
|
||||||
|
}<BR>
|
||||||
|
closedir($h);<BR>
|
||||||
|
}
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
This function deletes all files of the form tmp*.pdf older than an hour in the specified
|
||||||
|
directory. You may call it where you want, for instance in the script which generates the PDF.
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
Remark: it is necessary to open the PDF in a new window, as you can't go backwards due to the
|
||||||
|
redirection.
|
||||||
|
<P><A NAME='4'></A><B>4.</B> <FONT CLASS='st'>I send parameters using the POST method and the values don't appear in the PDF.</FONT></P>
|
||||||
|
It's a problem affecting some versions of IE (especially the first 5.5). See the previous
|
||||||
|
question for the ways to work around it.
|
||||||
|
<P><A NAME='5'></A><B>5.</B> <FONT CLASS='st'>When I use a PHP session, IE doesn't display my PDF any more but asks me to download it.</FONT></P>
|
||||||
|
It's a problem affecting some versions of IE. To work around it, add the following line before
|
||||||
|
session_start():
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
session_cache_limiter('private');
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
or do a redirection as explained in question 3.
|
||||||
|
<P><A NAME='6'></A><B>6.</B> <FONT CLASS='st'>When I'm on SSL, IE can't open the PDF.</FONT></P>
|
||||||
|
The problem may be fixed by adding this line:<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
Header('Pragma: public');
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
|
||||||
|
<P><A NAME='7'></A><B>7.</B> <FONT CLASS='st'>When I execute a script I get the message "FPDF error: Don't alter the locale before including class file".</FONT></P>
|
||||||
|
When the decimal separator is configured as a comma before including a file, there is a
|
||||||
|
<A HREF="http://bugs.php.net/bug.php?id=17105" TARGET="_blank">bug</A> in some PHP versions and decimal
|
||||||
|
numbers get truncated. Therefore you shouldn't make a call to setlocale() before including the class.
|
||||||
|
On Unix, you shouldn't set the LC_ALL environment variable neither, for it is equivalent to a
|
||||||
|
setlocale() call.
|
||||||
|
<P><A NAME='8'></A><B>8.</B> <FONT CLASS='st'>I try to put a PNG and Acrobat says "There was an error processing a page. A drawing error occurred".</FONT></P>
|
||||||
|
Acrobat 5 has a bug and is unable to display transparent monochrome images (i.e. with 1 bit per
|
||||||
|
pixel). Remove transparency or save your image in 16 colors (4 bits per pixel) or more.
|
||||||
|
<P><A NAME='9'></A><B>9.</B> <FONT CLASS='st'>I encounter the following error when I try to generate a PDF: Warning: Cannot add header information - headers already sent by (output started at script.php:X)</FONT></P>
|
||||||
|
You must send nothing to the browser except the PDF itself: no HTML, no space, no carriage return,
|
||||||
|
neither before nor after. The script outputs something at line X.
|
||||||
|
<P><A NAME='10'></A><B>10.</B> <FONT CLASS='st'>I try to display a variable in the Header method but nothing prints.</FONT></P>
|
||||||
|
You have to use the <TT>global</TT> keyword, for instance:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
function Header()<BR>
|
||||||
|
{<BR>
|
||||||
|
global $title;<BR>
|
||||||
|
<BR>
|
||||||
|
$this->SetFont('Arial','B',15);<BR>
|
||||||
|
$this->Cell(0,10,$title,1,1,'C');<BR>
|
||||||
|
}
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
|
||||||
|
<P><A NAME='11'></A><B>11.</B> <FONT CLASS='st'>I defined the Header and Footer methods in my PDF class but nothing appears.</FONT></P>
|
||||||
|
You have to create an object from the PDF class, not FPDF:<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
$pdf=new PDF();
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
|
||||||
|
<P><A NAME='12'></A><B>12.</B> <FONT CLASS='st'>I can't make line breaks work. I put \n in the string printed by MultiCell but it doesn't work.</FONT></P>
|
||||||
|
You have to enclose your string with double quotes, not single ones.
|
||||||
|
<P><A NAME='13'></A><B>13.</B> <FONT CLASS='st'>I try to put the euro symbol but it doesn't work.</FONT></P>
|
||||||
|
The standard fonts have the euro character at position 128. You can define a constant like this
|
||||||
|
for convenience:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
<TABLE WIDTH="100%" BGCOLOR="#E0E0E0"><TR><TD>
|
||||||
|
<TT>
|
||||||
|
define('EURO',chr(128));
|
||||||
|
</TT>
|
||||||
|
</TD></TR></TABLE><BR>
|
||||||
|
Note: Acrobat 4 or higher is required to display euro.
|
||||||
|
<P><A NAME='14'></A><B>14.</B> <FONT CLASS='st'>I draw a frame with very precise dimensions, but when printed I notice some differences.</FONT></P>
|
||||||
|
To respect dimensions, you have to uncheck the option "Fit to page" in the print dialog box.
|
||||||
|
<P><A NAME='15'></A><B>15.</B> <FONT CLASS='st'>I'd like to use the whole surface of the page, but when printed I always have some margins. How can I get rid of them?</FONT></P>
|
||||||
|
All printers have physical margins (different depending on the model), it is therefore impossible
|
||||||
|
to remove them and print on the totality of the paper.
|
||||||
|
<P><A NAME='16'></A><B>16.</B> <FONT CLASS='st'>What's the limit of the file sizes I can generate with FPDF?</FONT></P>
|
||||||
|
There is no particular limit. There are some constraints however:
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- The maximum memory size allocated to PHP scripts defaults to 8MB. For very big documents,
|
||||||
|
especially with images, this limit may be reached (the file being built into memory). The
|
||||||
|
parameter is configured in the php.ini file.
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- The maximum execution time allocated defaults to 30 seconds. This limit can of course be easily
|
||||||
|
reached. It is configured in php.ini and may be altered dynamically with set_time_limit().
|
||||||
|
<BR>
|
||||||
|
<BR>
|
||||||
|
- Browsers generally have a 5 minute time-out. If you send the PDF directly to the browser and
|
||||||
|
reach the limit, it will be lost. It is therefore advised for very big documents to
|
||||||
|
generate them in a file, and to send some data to the browser from time to time (for instance
|
||||||
|
page 1, page 2... with flush() to force the output). When the document is finished, you can send
|
||||||
|
a redirection on it with JavaScript or create a link.
|
||||||
|
<BR>
|
||||||
|
Remark: even when the browser goes in time-out, the script may continue to run on the server.
|
||||||
|
<P><A NAME='17'></A><B>17.</B> <FONT CLASS='st'>Can I modify a PDF with FPDF?</FONT></P>
|
||||||
|
No.
|
||||||
|
<P><A NAME='18'></A><B>18.</B> <FONT CLASS='st'>I'd like to make a search engine in PHP and index PDF files. Can I do it with FPDF?</FONT></P>
|
||||||
|
No. But a GPL C utility does exist, pdftotext, which is able to extract the textual content from
|
||||||
|
a PDF. It is provided with the Xpdf package:<BR>
|
||||||
|
<BR>
|
||||||
|
<A HREF="http://www.foolabs.com/xpdf/" TARGET="_blank">http://www.foolabs.com/xpdf/</A>
|
||||||
|
<P><A NAME='19'></A><B>19.</B> <FONT CLASS='st'>Can I convert an HTML page to PDF with FPDF?</FONT></P>
|
||||||
|
No. But a GPL C utility does exist, htmldoc, which allows to do it and gives good results:<BR>
|
||||||
|
<BR>
|
||||||
|
<A HREF="http://www.easysw.com/htmldoc/" TARGET="_blank">http://www.easysw.com/htmldoc/</A>
|
||||||
|
<P><A NAME='20'></A><B>20.</B> <FONT CLASS='st'>Can I concatenate PDF files with FPDF?</FONT></P>
|
||||||
|
No. But a free C utility exists to perform this task:<BR>
|
||||||
|
<BR>
|
||||||
|
<A HREF="http://thierry.schmit.free.fr/dev/mbtPdfAsm/enMbtPdfAsm2.html" TARGET="_blank">http://thierry.schmit.free.fr/dev/mbtPdfAsm/enMbtPdfAsm2.html</A>
|
||||||
|
</BODY>
|
||||||
|
</HTML>
|
||||||
|
|
@ -0,0 +1,28 @@
|
||||||
|
The attribute "host" is only in objectclass account.
|
||||||
|
Unfortunatly "account" conflicts with
|
||||||
|
"inetorgperson". so there's no perfect way to use
|
||||||
|
both.
|
||||||
|
|
||||||
|
In order to get attribute host working you have to
|
||||||
|
modify schema/inetorgperson and include host:
|
||||||
|
|
||||||
|
|
||||||
|
# inetOrgPerson
|
||||||
|
# The inetOrgPerson represents people who are associated with an
|
||||||
|
# organization in some way. It is a structural class and is derived
|
||||||
|
# from the organizationalPerson which is defined in X.521 [X521].
|
||||||
|
objectclass ( 2.16.840.1.113730.3.2.2
|
||||||
|
NAME 'inetOrgPerson'
|
||||||
|
DESC 'RFC2798: Internet Organizational Person'
|
||||||
|
SUP organizationalPerson
|
||||||
|
STRUCTURAL
|
||||||
|
MAY (
|
||||||
|
audio $ businessCategory $ carLicense $ departmentNumber $
|
||||||
|
displayName $ employeeNumber $ employeeType $ givenName $
|
||||||
|
homePhone $ homePostalAddress $ initials $ jpegPhoto $
|
||||||
|
labeledURI $ mail $ manager $ mobile $ o $ pager $
|
||||||
|
photo $ roomNumber $ secretary $ uid $ userCertificate $
|
||||||
|
x500uniqueIdentifier $ preferredLanguage $
|
||||||
|
userSMIMECertificate $ userPKCS12 $ host )
|
||||||
|
)
|
||||||
|
|
||||||
|
|
@ -0,0 +1,56 @@
|
||||||
|
lamdaemon.pl is used to modify quota and homedirs
|
||||||
|
on a remote or local host via ssh.
|
||||||
|
If you want wo use it you have to set up some
|
||||||
|
things to get it to work:
|
||||||
|
|
||||||
|
1. Setup values in LDAP Account Manager
|
||||||
|
* Set the remote or local host in the configuration
|
||||||
|
(e.g. 127.0.0.1)
|
||||||
|
* Path to lamdaemon.pl, e.g. /srv/www/htdocs/lam/lib/lamdaemon.pl
|
||||||
|
|
||||||
|
|
||||||
|
2. Set up sudo
|
||||||
|
The perl script has to run as root. Therefore we need
|
||||||
|
a wrapper, sudo.
|
||||||
|
Edit /etc/sudoers on host where homedirs or quotas should be used
|
||||||
|
and add the following line:
|
||||||
|
$admin All= NOPASSWD: $path
|
||||||
|
$admin is the adminuser from LAM and $path
|
||||||
|
is the path to lamdaemon.pl e.g. $admin All= NOPASSWD: /srv/www/htdocs/lam/lib/lamdaemon.pl
|
||||||
|
At the moment the password is a paramteter of lamdaemon.pl
|
||||||
|
therefore you should disable logging so the password does not
|
||||||
|
appear in any logfile.
|
||||||
|
This can be done by adding the following line to /etc/sudoers:
|
||||||
|
Defaults:$admin !syslog
|
||||||
|
|
||||||
|
3. Set up Perl
|
||||||
|
We need some external Perl modules, Quota and Net::SSH::Perl
|
||||||
|
To install them, run:
|
||||||
|
perl -MCPAN -e shell
|
||||||
|
install Quota
|
||||||
|
install Net::SSH::Perl
|
||||||
|
|
||||||
|
4. Test lamdaemon.pl
|
||||||
|
I've installed a test-function in lamdaemon.pl. Please run lamdaemon.pl
|
||||||
|
with the following attributes to test it:
|
||||||
|
lamdaemon.pl $ssh-server $lam_path_on_host $admin-username $admin-password *test
|
||||||
|
$ssh-server is the remote host lamdaemon.pl should be run on
|
||||||
|
$lam_path_on_host is the path to lamdaemon.pl on remote host
|
||||||
|
$admin-username is the name of the user which is allowed to run lamdaemon.pl
|
||||||
|
as root. It is the same user as in /etc/sudoers
|
||||||
|
$admin-password is the password of the admin user
|
||||||
|
*test is the command which tells lamdaemon.pl to test settings
|
||||||
|
|
||||||
|
You have to run the command as the user your webserver is running, e.g.
|
||||||
|
|
||||||
|
wwwrun@tilo:/srv/www/htdocs/lam/lib> /srv/www/htdocs/lam/lib/lamdaemon.pl \
|
||||||
|
127.0.0.1 /srv/www/htdocs/lam/lib/lamdaemon.pl root secret *test
|
||||||
|
|
||||||
|
You should get the following response:
|
||||||
|
Net::SSH::Perl successfully installed.
|
||||||
|
Perl quota module successfully installed.
|
||||||
|
If you have not seen any error lamdaemon.pl should be set up successfully.
|
||||||
|
|
||||||
|
Now everything should work fine.
|
||||||
|
|
||||||
|
Please send a mail to TiloLutz@gmx.de if you have any suggestions.
|
||||||
|
|
@ -0,0 +1,21 @@
|
||||||
|
Some basic hints to configure the OpenLDAP server:
|
||||||
|
|
||||||
|
SIZELIMIT: OpenLDAP allows by default 500 return values per search, if you have more users/groups/hosts
|
||||||
|
change this in slapd.conf: e.g. "sizelimit 10000" or "sizelimit -1" for unlimited return values.
|
||||||
|
|
||||||
|
INDICES: Indices will improve the performance when searching for entries in the LDAP directory.
|
||||||
|
The following indices are recommended:
|
||||||
|
|
||||||
|
index objectClass eq
|
||||||
|
index default sub
|
||||||
|
index uidNumber eq
|
||||||
|
index gidNumber eq
|
||||||
|
index memberUid eq
|
||||||
|
index cn,sn,uid,displayName pres,sub,eq
|
||||||
|
# Samba 2.x
|
||||||
|
index rid eq
|
||||||
|
index primaryGroupID eq
|
||||||
|
# Samba 3.x
|
||||||
|
index sambaSID eq
|
||||||
|
index sambaPrimaryGroupSID eq
|
||||||
|
index sambaDomainName eq
|
||||||
|
|
@ -0,0 +1,36 @@
|
||||||
|
|
||||||
|
1. Use of SSL
|
||||||
|
|
||||||
|
The data which is transfered between you and LAM is very sensitive.
|
||||||
|
Please always use SSL encrypted connections between LAM and your browser to
|
||||||
|
protect yourself against network sniffers.
|
||||||
|
|
||||||
|
|
||||||
|
2. LDAP+SSL and TLS
|
||||||
|
|
||||||
|
LAM should start TLS automatically if possible. LDAP+SSL will be used if you use
|
||||||
|
ldaps://servername in your configuration profile.
|
||||||
|
|
||||||
|
|
||||||
|
3. Chrooted servers
|
||||||
|
|
||||||
|
If your server is chrooted and you have no access to /dev/random or /dev/urandom
|
||||||
|
this can be a security risk. LAM stores your LDAP password encrypted in the session.
|
||||||
|
LAM uses rand() to generate the key if /dev/random and /dev/urandom are not accessible.
|
||||||
|
Therefore the key can be easily guessed.
|
||||||
|
An attaker needs read access to the session file (e.g. by another Apache instance) to
|
||||||
|
exploit this.
|
||||||
|
|
||||||
|
|
||||||
|
4. LDAP password protection
|
||||||
|
|
||||||
|
Your LDAP password is stored encrypted in the session file. The key and IV to decrypt
|
||||||
|
it are stored in two cookies. We use MCrypt/AES or Blowfish to encrypt the password.
|
||||||
|
|
||||||
|
|
||||||
|
5. Protection of new user passwords
|
||||||
|
|
||||||
|
These passwords are, if stored in the session file, encrypted with the same key and IV
|
||||||
|
as your LDAP password.
|
||||||
|
|
||||||
|
|
||||||
Loading…
Reference in New Issue