function author_id($unfamiliar_author = 'create')
{
global $wpdb;
$a = $this->named['author'];
$source = $this->source();
$forbidden = apply_filters('feedwordpress_forbidden_author_names', array('admin', 'administrator', 'www', 'root'));
// Prepare the list of candidates to try for author name: name from
// feed, original source title (if any), immediate source title live
// from feed, subscription title, prettied version of feed homepage URL,
// prettied version of feed URL, or, failing all, use "unknown author"
// as last resort
$candidates = array();
$candidates[] = $a['name'];
if (!is_null($source)) {
$candidates[] = $source['title'];
}
$candidates[] = $this->link->name(true);
$candidates[] = $this->link->name(false);
if (strlen($this->link->homepage()) > 0) {
$candidates[] = feedwordpress_display_url($this->link->homepage());
}
$candidates[] = feedwordpress_display_url($this->link->uri());
$candidates[] = 'unknown author';
// Pick the first one that works from the list, screening against empty
// or forbidden names.
$author = NULL;
while (is_null($author) and $candidate = each($candidates)) {
if (!is_null($candidate['value']) and strlen(trim($candidate['value'])) > 0 and !in_array(strtolower(trim($candidate['value'])), $forbidden)) {
$author = $candidate['value'];
}
}
$email = isset($a['email']) ? $a['email'] : NULL;
$authorUrl = isset($a['uri']) ? $a['uri'] : NULL;
$hostUrl = $this->link->homepage();
if (is_null($hostUrl) or strlen($hostUrl) < 0) {
$hostUrl = $this->link->uri();
}
$match_author_by_email = !('yes' == get_option("feedwordpress_do_not_match_author_by_email"));
if ($match_author_by_email and !FeedWordPress::is_null_email($email)) {
$test_email = $email;
} else {
$test_email = NULL;
}
// Never can be too careful...
$login = sanitize_user($author, true);
// Possible for, e.g., foreign script author names
if (strlen($login) < 1) {
// No usable characters in author name for a login.
// (Sometimes results from, e.g., foreign scripts.)
//
// We just need *something* in Western alphanumerics,
// so let's try the domain name.
//
// Uniqueness will be guaranteed below if necessary.
$url = parse_url($hostUrl);
$login = sanitize_user($url['host'], true);
if (strlen($login) < 1) {
// This isn't working. Frak it.
$login = 'syndicated';
}
}
$login = apply_filters('pre_user_login', $login);
$nice_author = sanitize_title($author);
$nice_author = apply_filters('pre_user_nicename', $nice_author);
$reg_author = esc_sql(preg_quote($author));
$author = esc_sql($author);
$email = esc_sql($email);
$test_email = esc_sql($test_email);
$authorUrl = esc_sql($authorUrl);
// Check for an existing author rule....
if (isset($this->link->settings['map authors']['name']['*'])) {
$author_rule = $this->link->settings['map authors']['name']['*'];
} elseif (isset($this->link->settings['map authors']['name'][strtolower(trim($author))])) {
$author_rule = $this->link->settings['map authors']['name'][strtolower(trim($author))];
} else {
$author_rule = NULL;
}
// User name is mapped to a particular author. If that author ID exists, use it.
if (is_numeric($author_rule) and get_userdata((int) $author_rule)) {
$id = (int) $author_rule;
// User name is filtered out
} elseif ('filter' == $author_rule) {
$id = NULL;
} else {
// Check the database for an existing author record that might fit
// First try the user core data table.
$id = $wpdb->get_var("SELECT ID FROM {$wpdb->users}\n\t\t\tWHERE TRIM(LCASE(display_name)) = TRIM(LCASE('{$author}'))\n\t\t\tOR TRIM(LCASE(user_login)) = TRIM(LCASE('{$author}'))\n\t\t\tOR (\n\t\t\t\tLENGTH(TRIM(LCASE(user_email))) > 0\n\t\t\t\tAND TRIM(LCASE(user_email)) = TRIM(LCASE('{$test_email}'))\n\t\t\t)");
// If that fails, look for aliases in the user meta data table
if (is_null($id)) {
$id = $wpdb->get_var("SELECT user_id FROM {$wpdb->usermeta}\n\t\t\t\tWHERE\n\t\t\t\t\t(meta_key = 'description' AND TRIM(LCASE(meta_value)) = TRIM(LCASE('{$author}')))\n\t\t\t\t\tOR (\n\t\t\t\t\t\tmeta_key = 'description'\n\t\t\t\t\t\tAND TRIM(LCASE(meta_value))\n\t\t\t\t\t\tRLIKE CONCAT(\n\t\t\t\t\t\t\t'(^|\\n)a\\.?k\\.?a\\.?( |\\t)*:?( |\\t)*',\n\t\t\t\t\t\t\tTRIM(LCASE('{$reg_author}')),\n\t\t\t\t\t\t\t'( |\\t|\\r)*(\\n|\$)'\n\t\t\t\t\t\t)\n\t\t\t\t\t)\n\t\t\t\t");
}
// ... if you don't find one, then do what you need to do
if (is_null($id)) {
if ($unfamiliar_author === 'create') {
$userdata = array();
// WordPress 3 is going to pitch a fit if we attempt to register
// more than one user account with an empty e-mail address, so we
// need *something* here. Ugh.
if (strlen($email) == 0 or FeedWordPress::is_null_email($email)) {
$url = parse_url($hostUrl);
$email = $nice_author . '@' . $url['host'];
}
#-- user table data
$userdata['ID'] = NULL;
// new user
$userdata['user_login'] = $login;
$userdata['user_nicename'] = $nice_author;
$userdata['user_pass'] = substr(md5(uniqid(microtime())), 0, 6);
// just something random to lock it up
$userdata['user_email'] = $email;
$userdata['user_url'] = $authorUrl;
$userdata['nickname'] = $author;
$parts = preg_split('/\\s+/', trim($author), 2);
if (isset($parts[0])) {
$userdata['first_name'] = $parts[0];
}
if (isset($parts[1])) {
$userdata['last_name'] = $parts[1];
}
$userdata['display_name'] = $author;
$userdata['role'] = 'contributor';
do {
// Keep trying until you get it right. Or until PHP crashes, I guess.
$id = wp_insert_user($userdata);
if (is_wp_error($id)) {
$codes = $id->get_error_code();
switch ($codes) {
case 'empty_user_login':
case 'existing_user_login':
// Add a random disambiguator
$userdata['user_login'] .= substr(md5(uniqid(microtime())), 0, 6);
break;
case 'user_nicename_too_long':
// Add a limited 50 caracters user_nicename based on user_login
$userdata['user_nicename'] = mb_substr($userdata['user_login'], 0, 50);
break;
case 'existing_user_email':
// No disassemble!
$parts = explode('@', $userdata['user_email'], 2);
// Add a random disambiguator as a gmail-style username extension
$parts[0] .= '+' . substr(md5(uniqid(microtime())), 0, 6);
// Reassemble
$userdata['user_email'] = $parts[0] . '@' . $parts[1];
break;
}
}
} while (is_wp_error($id));
} elseif (is_numeric($unfamiliar_author) and get_userdata((int) $unfamiliar_author)) {
$id = (int) $unfamiliar_author;
} elseif ($unfamiliar_author === 'default') {
$id = 1;
}
}
}
if ($id) {
$this->link->settings['map authors']['name'][strtolower(trim($author))] = $id;
// Multisite: Check whether the author has been recorded
// on *this* blog before. If not, put her down as a
// Contributor for *this* blog.
$user = new WP_User((int) $id);
if (empty($user->roles)) {
$user->add_role('contributor');
}
}
return $id;
}
