06-18-2005
Normally that should be it. Because what upload() returns is a filehandle you should be able to read it right away (provided a valid filehandle is returned). But now obviously the filehandle is undef. That was why I tried to make the guess that probably your temporary directory could not be written into, and so cannot be open()ed so no valid filehandle is returned.
Try this. Log the output of
$q->cgi_error
as the program proceeds. See if you get any error messages before or around the upload() method.
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LEARN ABOUT DEBIAN
lg_intro
lg_intro(1) General Commands Manual lg_intro(1)
NAME
lg_intro - introduction to the looking glass
INTRODUCTION
The looking glass offers a web based interface to routers to users without their needing permission to login to the router. This may be a
perfect interface for customer support or less savvy folks, and many ISPs have given public access to such an interface as a "route
server."
DESCRIPTION
The looking glass consists of two CGI perl(1) scripts, lg.cgi and lgform.cgi, and the lg.conf(5) configuration file.
Both of these scripts begin with reading the configuration file. If there is an error in the file's syntax or if the file can not be
found, error messages will be displayed on standard-error. The Apache http server redirects standard-error to its error log file by
default.
lgform.cgi displays a html form consisting of a list of possible router commands that can be run and a scrolling list of routers that these
commands may be run on. When the form is submitted, lg.cgi is run.
lg.cgi begins by performing some basic checks on the arguments passed to it. If these checks pass, lg.cgi either displays cached data from
a previous invocation, if that data exists and is within the cache interval, or uses clogin(1) to login to the device and execute the
command. The results of the command are cached if applicable and displayed for the user.
GETTING STARTED
Besides lg.conf(5), additional instructions for setting up the looking glass can be found in the README file under
/var/lib/rancid/README.lg.
Note that the looking glass scripts require a few perl modules not included with rancid. Rancid's configure process does not check for
these. See the README file.
SEE ALSO
cloginrc(5), clogin(1), lg.conf(5)
HISTORY
Rancid's looking glass is based on Ed Kern's (included by permission, thanks Ed!), which could once be found on http://nitrous.digex.net/
but has apparently been removed. Support for Juniper and Foundry devices, use of rancid's device login scripts, and additional commands
and checks have been added to the original.
24 Jan 2001 lg_intro(1)