Find a link in web folder location

tanveer · 10-16-2007, 06:06 AM

Hi all,

Recently I am getting a lot of error messages in my apache log file as some files are missing specially image files like

Code:

[Wed Oct  3 10:29:19 2007] [error] [client x.x.x.x] File does not exist: $DOCUMENT_ROOT/images/home-contact_bangla.jpg
[Wed Oct  3 10:29:25 2007] [error] [client x.x.x.x] File does not exist: $DOCUMENT_ROOT/img/tab_right.gif
[Wed Oct  3 10:29:25 2007] [error] [client x.x.x.x] File does not exist: $DOCUMENT_ROOT/img/tab_left.gif
[Wed Oct  3 10:29:28 2007] [error] PHP Notice:  Undefined index:  sub in $DOCUMENT_ROOT/index_content.php on line 198

[Wed Oct  3 12:38:52 2007] [error] PHP Notice:  Undefined index:  page in $DOCUMENT_ROOT/index_content.php on line 199
[Wed Oct  3 12:38:52 2007] [error] PHP Notice:  Undefined index:  page_id in $DOCUMENT_ROOT/index_content.php on line 200
[Wed Oct  3 12:38:52 2007] [error] PHP Notice:  Undefined index:  location in $DOCUMENT_ROOT/index_content.php on line 201
[Wed Oct  3 12:38:52 2007] [error] PHP Notice:  Undefined index:  location in $DOCUMENT_ROOT/index_content.php on line 361

[Wed Oct  3 10:29:36 2007] [error] PHP Notice:  Undefined offset:  9 in $DOCUMENT_ROOT/page.php on line 194
[Wed Oct  3 10:29:41 2007] [error] PHP Notice:  Undefined variable: main in $DOCUMENT_ROOT/index_home.php on line 164
[Wed Oct  3 10:29:41 2007] [error] PHP Notice:  Undefined variable: sub in $DOCUMENT_ROOT/index_home.php on line 164
[Wed Oct  3 10:29:57 2007] [error] [client x.x.x.x] File does not exist: $DOCUMENT_ROOT/img/newcats_bkgd.gif
[Wed Oct  3 10:29:57 2007] [error] [client x.x.x.x] File does not exist: $DOCUMENT_ROOT/img/ptr.gif

This is happening after we restructured the whole website recently.
Now they developer is saying this should not be the case as in the php files there are no link to image files as specified above.
What would be the quickest way to find whether or not there are really some links still persists in the code or there are some other reasons for appearing in the log?

Waiting for your responses.
Thanks in advance.

BrianK · 10-16-2007, 09:44 PM

it looks like something changed in the code, or the code is expecting something it's not getting. Especially suspicious is that many of the line numbers are right next to each other. I would bet that there's a function around line 199 in index_content.php that expects files to be in a directory that no longer exists.

All those undefined variable/offset/index errors mean that something either changed in the code or something the code is expecting to see isn't there.

matthewg42 · 10-16-2007, 09:56 PM

It depends on what the PHP code is doing. Maybe the names of these files are in the PHP code itself... in which case grepping all the .php files will find them. Maybe they are coming from a database table - doing a full text search on your database may find them. Lastly, the names may be being constructed by some php code... in this case, you need to search the code and database for likely components of the filenames which are stored as literal strings... This is not so easy.