430 lines
12 KiB
PHP
430 lines
12 KiB
PHP
<?php
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if(! function_exists('dfrn_request_init')) {
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function dfrn_request_init(&$a) {
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if($a->argc > 1)
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$which = $a->argv[1];
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require_once('mod/profile.php');
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profile_init($a,$which);
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return;
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}}
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if(! function_exists('dfrn_request_post')) {
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function dfrn_request_post(&$a) {
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if(($a->argc != 2) || (! count($a->profile)))
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return;
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if($_POST['cancel']) {
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goaway($a->get_baseurl());
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}
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// We've introduced ourself to another cell, then have been returned to our own cell
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// to confirm the request, and then we've clicked submit (perhaps after logging in).
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// That brings us here:
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if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1)) {
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// Ensure this is a valid request
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if(local_user() && ($a->user['nickname'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
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$dfrn_url = notags(trim($_POST['dfrn_url']));
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$aes_allow = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
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$confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
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$contact_record = null;
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if(x($dfrn_url)) {
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$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
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intval($_SESSION['uid']),
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dbesc($dfrn_url)
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);
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if(count($r)) {
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if(strlen($r[0]['dfrn-id'])) {
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notice( t("This introduction has already been accepted.") . EOL );
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return;
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}
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else
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$contact_record = $r[0];
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}
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if(is_array($contact_record)) {
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$r = q("UPDATE `contact` SET `ret-aes` = %d WHERE `id` = %d LIMIT 1",
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intval($aes_allow),
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intval($contact_record['id'])
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);
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}
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else {
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require_once('Scrape.php');
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$parms = scrape_dfrn($dfrn_url);
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if(! count($parms)) {
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notice( t('Profile location is not valid or does not contain profile information.') . EOL );
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return;
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}
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else {
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if(! x($parms,'fn'))
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notice( t('Warning: profile location has no identifiable owner name.') . EOL );
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if(! x($parms,'photo'))
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notice( t('Warning: profile location has no profile photo.') . EOL );
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$invalid = validate_dfrn($parms);
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if($invalid) {
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notice( $invalid . t(' required parameter')
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. (($invalid == 1) ? t(" was ") : t("s were ") )
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. t("not found at the given location.") . EOL ) ;
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return;
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}
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}
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$dfrn_request = $parms['dfrn-request'];
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dbesc_array($parms);
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$r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `name`, `photo`, `site-pubkey`,
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`request`, `confirm`, `notify`, `poll`, `aes_allow`)
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VALUES ( %d, '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', %d)",
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intval($_SESSION['uid']),
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datetime_convert(),
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dbesc($dfrn_url),
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$parms['fn'],
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$parms['photo'],
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$parms['key'],
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$parms['dfrn-request'],
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$parms['dfrn-confirm'],
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$parms['dfrn-notify'],
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$parms['dfrn-poll'],
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intval($aes_allow)
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);
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}
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if($r) {
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notice( t("Introduction complete.") . EOL);
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}
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// Allow the blocked remote notification to complete
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if(is_array($contact_record))
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$dfrn_request = $contact_record['request'];
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if(strlen($dfrn_request) && strlen($confirm_key))
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$s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
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// ignore reply
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goaway($dfrn_url);
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return; // NOTREACHED
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}
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}
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// invalid/bogus request
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notice( t("Unrecoverable protocol error.") . EOL );
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goaway($a->get_baseurl());
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return; // NOTREACHED
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}
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// Otherwise:
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// We are the requestee. A person from a remote cell has made an introduction
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// on our profile web page and clicked submit. We will use their DFRN-URL to
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// figure out how to contact their cell.
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// Scrape the originating DFRN-URL for everything we need. Create a contact record
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// and an introduction to show our user next time he/she logs in.
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// Finally redirect back to the requestor so that their site can record the request.
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// If our user (the requestee) later confirms this request, a record of it will need
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// to exist on the requestor's cell in order for the confirmation process to complete..
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// It's possible that neither the requestor or the requestee are logged in at the moment,
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// and the requestor does not yet have any credentials to the requestee profile.
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// Who is the requestee? We've already loaded their profile which means their nickname should be
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// in $a->argv[1] and we should have their complete info in $a->profile.
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if(! (is_array($a->profile) && count($a->profile))) {
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notice(t("Profile unavailable.") . EOL);
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return;
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}
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$nickname = $a->profile['nickname'];
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$notify_flags = $a->profile['notify-flags'];
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$uid = $a->profile['uid'];
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$contact_record = null;
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$failed = false;
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$parms = null;
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if( x($_POST,'dfrn_url')) {
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$url = trim($_POST['dfrn_url']);
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if(! strlen($url)) {
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notice( t("Invalid locator") . EOL );
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return;
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}
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// Is this an email-style DFRN locator?
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if(strstr($url,'@')) {
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$username = substr($url,0,strpos($url,'@'));
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$hostname = substr($url,strpos($url,'@') + 1);
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require_once('Scrape.php');
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$parms = scrape_meta('https://' . $url);
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if((x($parms,'dfrn-template')) && strstr($parms['dfrn-template'],'%s')) {
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$url = sprintf($parms['dfrn-template'],$username);
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}
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else {
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$parms = scrape_meta('http://' . $url);
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if((x($parms,'dfrn-template')) && strstr($parms['dfrn-template'],'%s')) {
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$url = sprintf($parms['dfrn-template'],$username);
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}
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else {
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$url = '';
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}
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}
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}
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if(! strlen($url)) {
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notice(t("Unable to resolve your name at the provided location.") . EOL);
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return;
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}
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$ret = q("SELECT * FROM `contact` WHERE `uid` = %d AND `url` = '%s' LIMIT 1",
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intval($uid),
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dbesc($url)
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);
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if(count($ret)) {
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if(strlen($ret[0]['issued-id'])) {
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notice( t('You have already introduced yourself here.') . EOL );
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return;
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}
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else {
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$contact_record = $ret[0];
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$parms = array('dfrn-request' => $ret[0]['request']);
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}
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}
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$issued_id = random_string();
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if(is_array($contact_record)) {
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// There is a contact record but no issued-id, so this
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// is a reciprocal introduction from a known contact
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$r = q("UPDATE `contact` SET `issued-id` = '%s' WHERE `id` = %d LIMIT 1",
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dbesc($issued_id),
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intval($contact_record['id'])
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);
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}
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else {
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require_once('Scrape.php');
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$parms = scrape_dfrn($url);
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if(! count($parms)) {
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notice( t('Profile location is not valid or does not contain profile information.') . EOL );
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killme();
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}
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else {
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if(! x($parms,'fn'))
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notice( t('Warning: profile location has no identifiable owner name.') . EOL );
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if(! x($parms,'photo'))
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notice( t('Warning: profile location has no profile photo.') . EOL );
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$invalid = validate_dfrn($parms);
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if($invalid) {
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notice( $invalid . t(' required parameter')
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. (($invalid == 1) ? t(" was ") : t("s were ") )
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. t("not found at the given location.") . EOL ) ;
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return;
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}
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}
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$parms['url'] = $url;
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$parms['issued-id'] = $issued_id;
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dbesc_array($parms);
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$r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `issued-id`, `photo`, `site-pubkey`,
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`request`, `confirm`, `notify`, `poll` )
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VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s' )",
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intval($uid),
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datetime_convert(),
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$parms['url'],
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$parms['fn'],
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$parms['issued-id'],
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$parms['photo'],
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$parms['key'],
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$parms['dfrn-request'],
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$parms['dfrn-confirm'],
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$parms['dfrn-notify'],
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$parms['dfrn-poll']
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);
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// find the contact record we just created
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if($r) {
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$r = q("SELECT `id` FROM `contact`
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WHERE `uid` = '%s' AND `url` = '%s' AND `issued-id` = '%s' LIMIT 1",
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intval($uid),
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$parms['url'],
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$parms['issued-id']
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);
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if(count($r))
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$contact_record = $r[0];
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}
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}
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if($r === false) {
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notice( 'Failed to update contact record.' . EOL );
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return;
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}
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$hash = random_string() . (string) time(); // Generate a confirm_key
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if(is_array($contact_record)) {
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$ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
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VALUES ( %d, %d, 1, %d, '%s', '%s', '%s' )",
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intval($uid),
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intval($contact_record['id']),
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((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
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dbesc(trim($_POST['dfrn-request-message'])),
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dbesc($hash),
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dbesc(datetime_convert())
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);
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}
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// This notice will only be seen by the requestor if the requestor and requestee are on the same server.
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if(! $failed)
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notice( t("Your introduction has been sent.") . EOL );
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// "Homecoming" - send the requestor back to their site to record the introduction.
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$dfrn_url = bin2hex($a->get_baseurl() . "/profile/$nickname");
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$aes_allow = ((function_exists('openssl_encrypt')) ? 1 : 0);
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goaway($parms['dfrn-request'] . "?dfrn_url=$dfrn_url" . '&confirm_key=' . $hash . (($aes_allow) ? "&aes_allow=1" : ""));
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return; // NOTREACHED
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}
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return;
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}}
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if(! function_exists('dfrn_request_content')) {
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function dfrn_request_content(&$a) {
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if(($a->argc != 2) || (! count($a->profile)))
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return "";
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$a->page['template'] = 'profile';
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// "Homecoming". Make sure we're logged in to this site as the correct user. Then offer a confirm button
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// to send us to the post section to record the introduction.
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if(x($_GET,'dfrn_url')) {
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if(! local_user()) {
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notice( t("Please login to confirm introduction.") . EOL );
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return login();
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}
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// Edge case, but can easily happen in the wild. This person is authenticated,
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// but not as the person who needs to deal with this request.
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if ($a->user['nickname'] != $a->argv[1]) {
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notice( t("Incorrect identity currently logged in. Please login to <strong>this</strong> profile.") . EOL);
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return login();
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}
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$dfrn_url = notags(trim(hex2bin($_GET['dfrn_url'])));
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$aes_allow = (((x($_GET,'aes_allow')) && ($_GET['aes_allow'] == 1)) ? 1 : 0);
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$confirm_key = (x($_GET,'confirm_key') ? $_GET['confirm_key'] : "");
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$o .= file_get_contents("view/dfrn_req_confirm.tpl");
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$o = replace_macros($o,array(
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'$dfrn_url' => $dfrn_url,
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'$aes_allow' => (($aes_allow) ? '<input type="hidden" name="aes_allow" value="1" />' : "" ),
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'$confirm_key' => $confirm_key,
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'$username' => $a->user['username'],
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'$uid' => $_SESSION['uid'],
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'$nickname' => $a->user['nickname'],
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'dfrn_rawurl' => $_GET['dfrn_url']
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));
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return $o;
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}
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elseif((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) {
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// we are the requestee and it is now safe to send our user their introduction,
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// We could just unblock it, but first we have to jump through a few hoops to
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// send an email, or even to find out if we need to send an email.
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$intro = q("SELECT * FROM `intro` WHERE `hash` = '%s' LIMIT 1",
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dbesc($_GET['confirm_key'])
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);
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if(count($intro)) {
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$r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
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WHERE `contact`.`id` = %d LIMIT 1",
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intval($intro[0]['contact-id'])
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);
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if(count($r)) {
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if($r[0]['notify-flags'] & NOTIFY_INTRO) {
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$email_tpl = file_get_contents('view/request_notify_eml.tpl');
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$email = replace_macros($email_tpl, array(
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'$requestor' => ((strlen(stripslashes($r[0]['name']))) ? stripslashes($r[0]['name']) : t('[Name Withheld]')),
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'$url' => stripslashes($r[0]['url']),
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'$myname' => $r[0]['username'],
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'$siteurl' => $a->get_baseurl(),
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'$sitename' => $a->config['sitename']
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));
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$res = mail($r[0]['email'],t("Introduction received at ") . $a->config['sitename'],$email,t('From: Administrator@') . $_SERVER[SERVER_NAME] );
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// This is a redundant notification - no point throwing errors if it fails.
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}
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}
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$r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s' LIMIT 1",
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dbesc($_GET['confirm_key'])
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);
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}
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killme();
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return; // NOTREACHED
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}
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else {
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// Normal web request. Display our user's introduction form.
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$o = file_get_contents("view/dfrn_request.tpl");
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$o = replace_macros($o,array('$nickname' => $a->argv[1]));
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return $o;
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}
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return; // Somebody is fishing.
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}} |