| 1 |
<?php |
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|
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namespace FluentSupport\App\Services; |
| 4 |
|
| 5 |
use FluentSupport\App\Models\Activity; |
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use FluentSupport\App\Models\Attachment; |
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use FluentSupport\App\Models\Conversation; |
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use FluentSupport\App\Models\Customer; |
| 9 |
use FluentSupport\App\Models\Meta; |
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use FluentSupport\App\Models\Notification; |
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use FluentSupport\App\Models\Ticket; |
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use FluentSupport\App\Services\Notifications\NotificationSettings; |
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|
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/** |
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* Moves a customer record onto its WordPress account's new email address once |
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* the customer proves they own it. |
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* |
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* ProfileInfoService won't follow an unverified email change, so the record |
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* keeps the old address. The confirmation link goes to the new address and |
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* only works for the signed-in account that requested it, so neither the inbox |
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* nor the account can move the record alone. |
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*/ |
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class EmailClaimService |
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{ |
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/** |
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* How long a claim link stays valid. A fresh one can always be requested |
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* from the portal. |
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*/ |
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const TTL_SECONDS = DAY_IN_SECONDS; |
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|
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/** |
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* Mixed into the signature so these tokens can't be replayed against |
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* another feature that signs with the same salt. |
| 34 |
*/ |
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const SIGNING_CONTEXT = 'fluent_support_email_claim_v1'; |
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|
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/** |
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* @return bool |
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*/ |
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public static function isEnabled() |
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{ |
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/* |
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* Filter whether customers may move their support address to their |
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* WordPress account address from the portal. |
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* |
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* @since v2.4.1 |
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* @param bool $enabled |
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*/ |
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return (bool) apply_filters('fluent_support/enable_email_claim', true); |
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} |
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|
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/** |
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* Describe how the signed-in account's address differs from its customer |
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* record, or null when there is nothing to reconcile. |
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* |
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* An address already held by another linked record also returns null. That |
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* is a conflict between two accounts and is left for an agent. |
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* |
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* Pass the customer if you already have it. The portal calls this on every |
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* page load. |
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* |
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* @param \FluentSupport\App\Models\Customer|null $customer |
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* @return array|null |
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*/ |
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public static function getDivergence($customer = null) |
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{ |
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if (!self::isEnabled()) { |
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return null; |
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} |
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|
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$userId = (int) get_current_user_id(); |
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|
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if (!$userId) { |
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return null; |
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} |
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|
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$user = get_user_by('ID', $userId); |
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|
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if (!$user || !$user->user_email) { |
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return null; |
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} |
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|
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$customer = $customer ?: Helper::getCurrentCustomer(); |
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|
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if (!$customer || (int) $customer->user_id !== $userId) { |
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return null; |
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} |
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|
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if (self::isSame($customer->email, $user->user_email)) { |
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return null; |
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} |
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|
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if (self::heldByLinkedCustomer($user->user_email, $customer->id)) { |
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return null; |
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} |
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|
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// Stray records on the new address aren't loaded here. apply() reads |
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// them when it acts. |
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return [ |
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'customer' => $customer, |
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'from' => $customer->email, |
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'to' => $user->user_email |
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]; |
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} |
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|
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/** |
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* Mail a confirmation link to the address being claimed. |
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* |
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* @param array $divergence As returned by getDivergence() |
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* @return string '' on success, otherwise an error slug |
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*/ |
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public static function issue($divergence) |
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{ |
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$customer = $divergence['customer']; |
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$target = $divergence['to']; |
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|
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// Per account, to stop one account mailing many inboxes. Per address, |
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// to stop many accounts mailing one inbox. |
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$accountKey = 'fs_email_claim_user_' . (int) $customer->user_id; |
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$targetKey = 'fs_email_claim_to_' . wp_hash(self::normalize($target)); |
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|
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if (Helper::hitRateLimit($accountKey, 5, HOUR_IN_SECONDS) |
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|| Helper::hitRateLimit($targetKey, 5, HOUR_IN_SECONDS) |
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) { |
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return 'throttled'; |
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} |
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|
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$link = self::buildConfirmUrl($customer, $target); |
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|
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if (!$link) { |
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return 'no_portal'; |
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} |
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|
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$siteName = wp_specialchars_decode(get_bloginfo('name'), ENT_QUOTES); |
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|
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$subject = apply_filters( |
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'fluent_support/email_claim_mail_subject', |
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// translators: %s is the site name |
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sprintf(__('[%s] Confirm your support email address', 'fluent-support'), $siteName), |
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$customer |
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); |
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|
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$pStart = '<p style="font-family: Arial, sans-serif; font-size: 16px; font-weight: normal; margin: 0; margin-bottom: 16px;">'; |
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|
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$body = $pStart . sprintf( |
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// translators: %s is the customer's first name |
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__('Hello %s,', 'fluent-support'), |
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// WordPress doesn't sanitize first_name on save. |
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esc_html($customer->first_name) |
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) . '</p>' . |
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$pStart . sprintf( |
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// translators: 1: site name, 2: the email address being confirmed |
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__('Someone asked to use this address for support messages on %1$s. Confirming will send future support notifications to %2$s and bring any tickets opened from it into your account.', 'fluent-support'), |
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$siteName, |
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$target |
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) . '</p>' . |
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$pStart . '<a style="display: inline-block; background: #2271b1; color: #fff; text-decoration: none; padding: 10px 24px; border-radius: 3px;" href="' . esc_url($link) . '">' . |
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esc_html__('Confirm this address', 'fluent-support') . '</a></p>' . |
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$pStart . __('You will be asked to sign in first, so this link only works for the account that requested it.', 'fluent-support') . '</p>' . |
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$pStart . __('If you did not ask for this, no action is needed and nothing has changed. Your support messages will keep going to the address they go to now.', 'fluent-support') . '</p>'; |
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|
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/* |
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* Filter the body of the support address confirmation email. |
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* |
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* @since v2.4.1 |
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* @param string $body |
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* @param \FluentSupport\App\Models\Customer $customer |
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* @param string $target The address being confirmed |
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* @param string $link |
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*/ |
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$body = apply_filters('fluent_support/email_claim_mail_body', $body, $customer, $target, $link); |
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|
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$message = Helper::loadView('notification', [ |
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'body' => $body, |
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'pre_header' => __('Confirm your support email address', 'fluent-support'), |
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'show_footer' => false |
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]); |
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|
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$sent = wp_mail($target, $subject, $message, ['Content-Type: text/html; charset=UTF-8']); |
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|
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if (!$sent) { |
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return 'send_failed'; |
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} |
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|
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return ''; |
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} |
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|
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/** |
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* Validate a confirmation token against current state. |
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* |
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* The token binds the record's current address, so applying a claim retires |
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* the link. It is not strictly single-use: if the record is moved back to |
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* that address before expiry, the link works again. |
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* |
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* @param string $token |
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* @return array ['status' => slug, 'customer' => Customer|null, 'email' => string] |
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*/ |
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public static function resolveClaim($token) |
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{ |
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if (!self::isEnabled()) { |
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return ['status' => 'disabled']; |
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} |
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|
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$claim = self::parseToken($token); |
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|
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if (!$claim) { |
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return ['status' => 'invalid']; |
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} |
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|
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if ($claim['expires'] < time()) { |
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return ['status' => 'expired']; |
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} |
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|
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// Inbox access alone isn't enough. The claiming account must be signed in. |
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if ((int) get_current_user_id() !== $claim['user_id']) { |
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return ['status' => 'wrong_account']; |
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} |
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|
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$customer = Customer::where('id', $claim['customer_id'])->first(); |
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|
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if (!$customer || (int) $customer->user_id !== $claim['user_id']) { |
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return ['status' => 'invalid']; |
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} |
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|
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if (!self::isSame($customer->email, $claim['from'])) { |
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return ['status' => 'stale']; |
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} |
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|
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$user = get_user_by('ID', $claim['user_id']); |
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|
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if (!$user || !self::isSame($user->user_email, $claim['to'])) { |
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return ['status' => 'stale']; |
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} |
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|
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if (self::heldByLinkedCustomer($claim['to'], $customer->id)) { |
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return ['status' => 'conflict']; |
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} |
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|
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return [ |
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'status' => 'ok', |
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'customer' => $customer, |
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'email' => $claim['to'] |
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]; |
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} |
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|
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/** |
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* Move the record onto the confirmed address and absorb any unlinked record |
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* that was already collecting tickets there. |
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* |
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* @param \FluentSupport\App\Models\Customer $customer |
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* @param string $email |
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* @return array ['merged' => int, 'tickets' => int] |
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*/ |
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public static function apply($customer, $email) |
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{ |
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$previousEmail = $customer->email; |
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|
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$merged = 0; |
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$moved = 0; |
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|
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foreach (self::unlinkedRecordsHolding($email, $customer->id) as $duplicate) { |
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$moved += self::absorb($duplicate, $customer); |
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$merged++; |
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} |
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|
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$customer->email = $email; |
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$customer->save(); |
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|
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// Shared with the profile_update path: rotates ticket hashes and logs activity. |
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ProfileInfoService::onProvenEmailChange($customer, $previousEmail, 'claimed'); |
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|
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return ['merged' => $merged, 'tickets' => $moved]; |
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} |
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|
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/** |
| 276 |
* Reparent everything hanging off one customer record onto another, then |
| 277 |
* remove the record it came from. |
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* |
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* The source is deleted only if a re-read shows it empty. The tables may be |
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* MyISAM, so a transaction can't be relied on. |
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* |
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* @param \FluentSupport\App\Models\Customer $source |
| 283 |
* @param \FluentSupport\App\Models\Customer $target |
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* @return int Number of tickets moved |
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*/ |
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protected static function absorb($source, $target) |
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{ |
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$tickets = Ticket::where('customer_id', $source->id)->get(); |
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|
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foreach ($tickets as $ticket) { |
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$ticket->customer_id = $target->id; |
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// Saved one by one so Ticket's updating event rotates the hash. |
| 293 |
// A query-builder update would skip it. |
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$ticket->save(); |
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} |
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|
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Conversation::where('person_id', $source->id)->update(['person_id' => $target->id]); |
| 298 |
Attachment::where('person_id', $source->id)->update(['person_id' => $target->id]); |
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|
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Activity::where('person_type', 'customer') |
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->where('person_id', $source->id) |
| 302 |
->update(['person_id' => $target->id]); |
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|
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Activity::where('object_type', 'customer') |
| 305 |
->where('object_id', $source->id) |
| 306 |
->update(['object_id' => $target->id]); |
| 307 |
|
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// Notification tables only exist once internal notifications have been |
| 309 |
// enabled, so check before querying them. |
| 310 |
$hasNotifications = (new NotificationSettings())->notificationTablesExist(); |
| 311 |
|
| 312 |
if ($hasNotifications) { |
| 313 |
Notification::where('actor_id', $source->id) |
| 314 |
->update(['actor_id' => $target->id]); |
| 315 |
} |
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|
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self::mergeMeta($source, $target); |
| 318 |
|
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/* |
| 320 |
* Fires while one customer record is merged into another, after core |
| 321 |
* rows have moved and before the source record is removed. Move any |
| 322 |
* rows keyed by person id here. Pro moves time tracking on this hook. |
| 323 |
* |
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* @since v2.4.1 |
| 325 |
* @param \FluentSupport\App\Models\Customer $source Record being absorbed |
| 326 |
* @param \FluentSupport\App\Models\Customer $target Record it is folded into |
| 327 |
*/ |
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do_action('fluent_support/merging_customer_records', $source, $target); |
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|
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$sourceId = $source->id; |
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$sourceEmail = $source->email; |
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$ticketsMoved = count($tickets); |
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|
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$remaining = Ticket::where('customer_id', $sourceId)->count() |
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+ Conversation::where('person_id', $sourceId)->count() |
| 336 |
+ Attachment::where('person_id', $sourceId)->count(); |
| 337 |
|
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if ($hasNotifications) { |
| 339 |
$remaining += Notification::where('actor_id', $sourceId)->count(); |
| 340 |
} |
| 341 |
|
| 342 |
if ($remaining === 0) { |
| 343 |
$source->deleteAllMeta(); |
| 344 |
$source->delete(); |
| 345 |
} |
| 346 |
|
| 347 |
Activity::create([ |
| 348 |
'event_type' => 'fluent_support/customer_records_merged', |
| 349 |
'person_id' => $target->id, |
| 350 |
'person_type' => 'customer', |
| 351 |
'object_id' => $target->id, |
| 352 |
'object_type' => 'customer', |
| 353 |
'description' => $remaining === 0 |
| 354 |
? sprintf( |
| 355 |
// translators: 1: merged customer record id, 2: that record's email address, 3: number of tickets moved |
| 356 |
_n( |
| 357 |
'Merged customer record #%1$s (%2$s) into this one after the address was confirmed. %3$s ticket moved and its shared link was reissued.', |
| 358 |
'Merged customer record #%1$s (%2$s) into this one after the address was confirmed. %3$s tickets moved and their shared links were reissued.', |
| 359 |
$ticketsMoved, |
| 360 |
'fluent-support' |
| 361 |
), |
| 362 |
$sourceId, |
| 363 |
$sourceEmail, |
| 364 |
$ticketsMoved |
| 365 |
) |
| 366 |
: sprintf( |
| 367 |
// translators: 1: customer record id, 2: that record's email address, 3: number of tickets moved |
| 368 |
_n( |
| 369 |
'Moved %3$s ticket from customer record #%1$s (%2$s) into this one after the address was confirmed. That record still holds other data and was kept.', |
| 370 |
'Moved %3$s tickets from customer record #%1$s (%2$s) into this one after the address was confirmed. That record still holds other data and was kept.', |
| 371 |
$ticketsMoved, |
| 372 |
'fluent-support' |
| 373 |
), |
| 374 |
$sourceId, |
| 375 |
$sourceEmail, |
| 376 |
$ticketsMoved |
| 377 |
) |
| 378 |
]); |
| 379 |
|
| 380 |
return $ticketsMoved; |
| 381 |
} |
| 382 |
|
| 383 |
/** |
| 384 |
* Move person meta the target doesn't already have. The target's own keys win. |
| 385 |
* |
| 386 |
* @param \FluentSupport\App\Models\Customer $source |
| 387 |
* @param \FluentSupport\App\Models\Customer $target |
| 388 |
* @return void |
| 389 |
*/ |
| 390 |
protected static function mergeMeta($source, $target) |
| 391 |
{ |
| 392 |
$sourceMeta = Meta::where('object_type', 'person_meta') |
| 393 |
->where('object_id', $source->id) |
| 394 |
->get(); |
| 395 |
|
| 396 |
if (!$sourceMeta || count($sourceMeta) === 0) { |
| 397 |
return; |
| 398 |
} |
| 399 |
|
| 400 |
$existing = Meta::where('object_type', 'person_meta') |
| 401 |
->where('object_id', $target->id) |
| 402 |
->get() |
| 403 |
->pluck('key') |
| 404 |
->toArray(); |
| 405 |
|
| 406 |
foreach ($sourceMeta as $meta) { |
| 407 |
if (in_array($meta->key, $existing, true)) { |
| 408 |
continue; |
| 409 |
} |
| 410 |
|
| 411 |
$meta->object_id = $target->id; |
| 412 |
$meta->save(); |
| 413 |
} |
| 414 |
} |
| 415 |
|
| 416 |
/** |
| 417 |
* @param \FluentSupport\App\Models\Customer $customer |
| 418 |
* @param string $target |
| 419 |
* @return string |
| 420 |
*/ |
| 421 |
public static function buildConfirmUrl($customer, $target) |
| 422 |
{ |
| 423 |
$baseUrl = Helper::getPortalBaseUrl(); |
| 424 |
|
| 425 |
if (!$baseUrl) { |
| 426 |
return ''; |
| 427 |
} |
| 428 |
|
| 429 |
$token = self::buildToken( |
| 430 |
$customer->id, |
| 431 |
$customer->user_id, |
| 432 |
$customer->email, |
| 433 |
$target, |
| 434 |
time() + self::TTL_SECONDS |
| 435 |
); |
| 436 |
|
| 437 |
return add_query_arg([ |
| 438 |
'fs_view' => 'email_claim', |
| 439 |
'fs_claim' => $token |
| 440 |
], $baseUrl); |
| 441 |
} |
| 442 |
|
| 443 |
/** |
| 444 |
* URL the portal notice points at to request a confirmation email. |
| 445 |
* |
| 446 |
* Nonced because following it sends mail. |
| 447 |
* |
| 448 |
* @return string |
| 449 |
*/ |
| 450 |
public static function buildRequestUrl() |
| 451 |
{ |
| 452 |
$baseUrl = Helper::getPortalBaseUrl(); |
| 453 |
|
| 454 |
if (!$baseUrl) { |
| 455 |
return ''; |
| 456 |
} |
| 457 |
|
| 458 |
return add_query_arg([ |
| 459 |
'fs_view' => 'email_claim', |
| 460 |
'fs_claim_action' => 'send', |
| 461 |
'_wpnonce' => wp_create_nonce('fs_email_claim_send') |
| 462 |
], $baseUrl); |
| 463 |
} |
| 464 |
|
| 465 |
/** |
| 466 |
* @param int $customerId |
| 467 |
* @param int $userId |
| 468 |
* @param string $from Address the record holds now |
| 469 |
* @param string $to Address being claimed |
| 470 |
* @param int $expires |
| 471 |
* @return string |
| 472 |
*/ |
| 473 |
public static function buildToken($customerId, $userId, $from, $to, $expires) |
| 474 |
{ |
| 475 |
// Encoded because is_email() accepts '|' in the local part. |
| 476 |
$payload = implode('|', [ |
| 477 |
(int) $customerId, |
| 478 |
(int) $userId, |
| 479 |
rawurlencode(self::normalize($from)), |
| 480 |
rawurlencode(self::normalize($to)), |
| 481 |
(int) $expires |
| 482 |
]); |
| 483 |
|
| 484 |
$raw = $payload . '|' . self::sign($payload); |
| 485 |
|
| 486 |
return rtrim(strtr(base64_encode($raw), '+/', '-_'), '='); |
| 487 |
} |
| 488 |
|
| 489 |
/** |
| 490 |
* @param string $token |
| 491 |
* @return array|null |
| 492 |
*/ |
| 493 |
protected static function parseToken($token) |
| 494 |
{ |
| 495 |
$token = (string) $token; |
| 496 |
|
| 497 |
if (!$token || !preg_match('/^[A-Za-z0-9_-]+$/', $token)) { |
| 498 |
return null; |
| 499 |
} |
| 500 |
|
| 501 |
$raw = base64_decode(strtr($token, '-_', '+/'), true); |
| 502 |
|
| 503 |
if (!$raw) { |
| 504 |
return null; |
| 505 |
} |
| 506 |
|
| 507 |
$parts = explode('|', $raw); |
| 508 |
|
| 509 |
if (count($parts) !== 6) { |
| 510 |
return null; |
| 511 |
} |
| 512 |
|
| 513 |
list($customerId, $userId, $from, $to, $expires, $signature) = $parts; |
| 514 |
|
| 515 |
$payload = implode('|', [$customerId, $userId, $from, $to, $expires]); |
| 516 |
|
| 517 |
if (!hash_equals(self::sign($payload), $signature)) { |
| 518 |
return null; |
| 519 |
} |
| 520 |
|
| 521 |
// Decode only after verifying the signature over the encoded string. |
| 522 |
return [ |
| 523 |
'customer_id' => (int) $customerId, |
| 524 |
'user_id' => (int) $userId, |
| 525 |
'from' => rawurldecode($from), |
| 526 |
'to' => rawurldecode($to), |
| 527 |
'expires' => (int) $expires |
| 528 |
]; |
| 529 |
} |
| 530 |
|
| 531 |
/** |
| 532 |
* @param string $payload |
| 533 |
* @return string |
| 534 |
*/ |
| 535 |
protected static function sign($payload) |
| 536 |
{ |
| 537 |
return hash_hmac('sha256', self::SIGNING_CONTEXT . '|' . $payload, wp_salt('auth')); |
| 538 |
} |
| 539 |
|
| 540 |
/** |
| 541 |
* Records on this address with no WordPress account. Only these may be |
| 542 |
* absorbed by a claim. |
| 543 |
* |
| 544 |
* @param string $email |
| 545 |
* @param int $excludeId |
| 546 |
* @return \FluentSupport\Framework\Support\Collection |
| 547 |
*/ |
| 548 |
protected static function unlinkedRecordsHolding($email, $excludeId) |
| 549 |
{ |
| 550 |
return Customer::where('email', $email) |
| 551 |
->where('id', '!=', $excludeId) |
| 552 |
->unclaimed() |
| 553 |
->orderBy('id', 'ASC') |
| 554 |
->get(); |
| 555 |
} |
| 556 |
|
| 557 |
/** |
| 558 |
* Whether another account's customer record already holds this address. |
| 559 |
* |
| 560 |
* @param string $email |
| 561 |
* @param int $excludeId |
| 562 |
* @return bool |
| 563 |
*/ |
| 564 |
protected static function heldByLinkedCustomer($email, $excludeId) |
| 565 |
{ |
| 566 |
if (!$email) { |
| 567 |
return true; |
| 568 |
} |
| 569 |
|
| 570 |
return (bool) Customer::where('email', $email) |
| 571 |
->where('id', '!=', $excludeId) |
| 572 |
->claimed() |
| 573 |
->first(); |
| 574 |
} |
| 575 |
|
| 576 |
/** |
| 577 |
* @param string $email |
| 578 |
* @return string |
| 579 |
*/ |
| 580 |
protected static function normalize($email) |
| 581 |
{ |
| 582 |
return strtolower(trim((string) $email)); |
| 583 |
} |
| 584 |
|
| 585 |
/** |
| 586 |
* @param string $left |
| 587 |
* @param string $right |
| 588 |
* @return bool |
| 589 |
*/ |
| 590 |
protected static function isSame($left, $right) |
| 591 |
{ |
| 592 |
return self::normalize($left) === self::normalize($right); |
| 593 |
} |
| 594 |
} |
| 595 |
|
