[issue1684] CGIHTTPServer does not chdir prior to executing the CGI script

[Fazal Majid]

Fazal Majid added the comment:

There isn't any normative reference that I know of, in fact the default
behavior is different on Unix and Windows.

Apache 2.2 (and most certainly older versions as well) implements this
in mod_cgi.c. The relevant lines:

    /* Transmute ourselves into the script.
     * NB only ISINDEX scripts get decoded arguments.
     */
    if (((rc = apr_procattr_create(&procattr, p)) != APR_SUCCESS) ||
        ((rc = apr_procattr_io_set(procattr,
                                   e_info->in_pipe,
                                   e_info->out_pipe,
                                   e_info->err_pipe)) != APR_SUCCESS) ||
        ((rc = apr_procattr_dir_set(procattr,
                        ap_make_dirstr_parent(r->pool,
                                              r->filename))) !=
APR_SUCCESS) ||



apr_procattr_dir_set sets the cwd for the child subprocess
ap_make_dirstr_parent is equivalent to os.path.dirname.

As the default behavior is system-dependent, it should not be hardcoded
but some sort of hook should provided to allow implementing either the
UNIX or Windows semantics.

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