suexec/6221: suexec is ignoring UserDir directive in httpd.conf

[Deon Ramsey <dr...@computacenter.de>]

>Number:         6221
>Category:       suexec
>Synopsis:       suexec is ignoring UserDir directive in httpd.conf
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Wed Jun 21 06:50:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     dra@computacenter.de
>Release:        1.3.12
>Organization:
apache
>Environment:
SunOS alioth 5.7 Generic_106542-07 i86pc i386 i86pc
gcc 2.95
>Description:
When the UserDir directive is used in httpd.conf to set the default directory to something besides public_html
and a cgi file is requested from a users directory, suexec still looks in the public_html directory for that
file, resulting in the error 'emerg: cannot get docroot information' because of course that directory doesn't
exist.
>How-To-Repeat:
Set up apache to use suexec. set UserDir to something other than public_html (I use etc/www for historical reasons). Put a cgi
file into your directory (don't foget to enable cgi), then try to get that file. if you put a logical link
from public_html to your directory getting the file will work.
>Fix:
The following patch to src/support/suexec.c will help in diagnosing the problem, and also give much
more legible error messages for the future, you'll probably want to start from there:

455,459c455,456
<       if (((chdir(target_homedir)) != 0) ||
<           ((chdir(USERDIR_SUFFIX)) != 0) ||
<           ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
<           ((chdir(cwd)) != 0)) {
<           log_err("emerg: cannot get docroot information (%s)\n",
---
>       if ((chdir(target_homedir)) != 0) {
>           log_err("emerg: cannot cd to user homedir (%s)\n",
462a460,474
>       if ((chdir(USERDIR_SUFFIX)) != 0) {
>           log_err("emerg: cannot cd to user subdir (%s/%s)\n",
>                   target_homedir,USERDIR_SUFFIX);
>           exit(112);
>       }
>       if ((getcwd(dwd, AP_MAXPATH)) == NULL) {
>           log_err("emerg: cannot get user docroot information (%s)\n",
>                   target_homedir);
>           exit(112);
>       }
>       if ((chdir(cwd)) != 0) {
>           log_err("emerg: cannot cd back (%s)\n",
>                   cwd);
>           exit(112);
>       }
465,468c477,478
<       if (((chdir(DOC_ROOT)) != 0) ||
<           ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
<           ((chdir(cwd)) != 0)) {
<           log_err("emerg: cannot get docroot information (%s)\n", DOC_ROOT);
---
>       if ((chdir(DOC_ROOT)) != 0) {
>           log_err("emerg: cannot cd to main docroot (%s)\n", DOC_ROOT);
470a481,488
>       if ((getcwd(dwd, AP_MAXPATH)) == NULL) {
>           log_err("emerg: cannot get main docroot information (%s)\n", DOC_ROOT);
>           exit(113);
>       }
>       if ((chdir(cwd)) != 0) {
>           log_err("emerg: cannot cd back from main (%s)\n", cwd);
>           exit(113);
>       }
>Release-Note:
>Audit-Trail:
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