Under Reports -> Recent log messages, I have a large number of errors such as the following:

I have a multilingual site (English en and Japanese ja), so I assume that somewhere there is a bad link or a module is outputting a bad link to the registration page. How can I find out where? The only clue I have is this entry in the recent error log.

When I visit the link (http://mysite.com/ja/user/en/user/register), I get a "The page isn't redirecting properly. Firefox has detected that the server is redirecting the request for this address in a way that will never complete."

  • Start checking any nodes/blocks that might have a hardcoded link to the registration page. Have a look also at Link Checker module - if might detect the source. Nov 7 '13 at 11:44
  • yeah looks like a typical hard-coded relative href not set right
    – Pan Chrono
    Nov 7 '13 at 19:50
  • Is there a way to query the database to identify links to user/register? There's a lot of content, including links in Panels and Views, and the link(s) could be any number of places. Nov 12 '13 at 1:15

If you know the name of the failing redirect URI (such as user/register), the best is to scan through your database and look for redirect entries, e.g. using drush:

drush sql-dump --ordered-dump | grep "user/register"

Alternatively add dd() (from Devel) into drupal_goto() and log the backtrace of each call into the file, e.g.

dd(debug_backtrace(FALSE, 5));

and check drupal_debug.txt in your tmp folder.

Another trick include using DTrace and hook into static probes (if your PHP supports that: php -i | grep dtrace), for example (after running the script):

sudo dtrace -qn 'php*:::function-entry { printf("%Y: PHP function-entry:\t%s%s%s() in %s:%d\n", walltimestamp, copyinstr(arg3), copyinstr(arg4), copyinstr(arg0), basename(copyinstr(arg1)), (int)arg2); }'

then you may grep it and look for specific functions such as drupal_goto, so you may append to above:

| grep -B5 drupal_goto > trace.txt

so this will log into file all calls to drupal_goto with 5 function calls before.

See also: How to generate the function stack trace of the last request made?

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