Files
cf7-spam-to-telegram/includes/class-field-detector.php
T
Vladimir Bryzgalov 8efb82ca43 fix: phone leak, field-by-value detection, strict Flamingo email fallback
Three pilot-surfaced issues in one pass:

1. PhoneParser regex used '\s' in the candidate character class, so a
   digit on a following flattened line bled into the phone. '+7977
   6277470\n1' (phone + trailing checkbox value) parsed as 12 digits,
   producing '+797762774701'. Replaced '\s' with a literal space so
   newlines/tabs stop the candidate.

2. Custom-themed forms don't use 'your-name' / 'your-email' keys
   (washanyanya.ru has text-211 / text-212 / name_user). Added
   FieldDetector::find_name + find_email as fallbacks. Classifier
   and MessageFormatter now call them if no standard key matches,
   so 'Александр' in text-211 is recognised as a cyrillic name and
   scored / displayed accordingly.

3. FlamingoHelper copied '_from_email' into 'your-email' without
   validating it. Flamingo derives that meta from whatever field it
   considers "first"; on phone-first forms it ends up holding the
   phone number. Now we only copy _from_email if it contains '@',
   and dropped the _from_name shortcut entirely — FieldDetector
   handles the name via the actual field values.

Tests: +1 FieldDetectorTest (13 cases); +2 PhoneParserTest cases for
newline/tab bleeds; +1 ClassifierTest case; +1 MessageFormatterTest
case for custom field keys. Full suite 53/53 green.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-04-18 00:22:39 +05:00

57 lines
1.7 KiB
PHP

<?php
declare(strict_types=1);
namespace Cf7stg;
/**
* Heuristic detection of name/email/etc. when form field keys are not
* the standard CF7 ones (your-name, your-email, ...). Used as a fallback
* for custom-themed forms where fields are called text-211, name_user,
* и т.п.
*/
final class FieldDetector
{
/**
* Scan values for something that plausibly looks like a human name:
* letters (any script), optional spaces/hyphens/apostrophes/dots,
* no digits, no URLs, no emails, length 2..80.
*/
public static function find_name(array $fields): string
{
foreach ($fields as $v) {
if (is_array($v)) {
$v = implode(' ', array_map('strval', $v));
}
$v = trim((string)$v);
if ($v === '') continue;
$len = mb_strlen($v);
if ($len < 2 || $len > 80) continue;
if (preg_match('/\d/u', $v)) continue;
if (preg_match('#https?://|www\.|@#iu', $v)) continue;
// Must start with a letter and contain only letter-like characters
if (preg_match('/^\p{L}[\p{L}\s\.\-\']{1,79}$/u', $v)) {
return $v;
}
}
return '';
}
/**
* First value that looks like an email address.
*/
public static function find_email(array $fields): string
{
foreach ($fields as $v) {
if (is_array($v)) {
$v = implode(' ', array_map('strval', $v));
}
$v = trim((string)$v);
if ($v === '') continue;
if (preg_match('/^\S+@\S+\.\S+$/u', $v)) {
return $v;
}
}
return '';
}
}