339 lines
		
	
	
	
		
			8.6 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			339 lines
		
	
	
	
		
			8.6 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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function dfrn_confirm_post(&$a) {
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	if($a->argc > 1)
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		$node = $a->argv[1];
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	if(x($_POST,'source_url')) {
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		// We are processing an external confirmation to an introduction created by our user.
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		$public_key = $_POST['public_key'];
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		$dfrn_id = $_POST['dfrn_id'];
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		$source_url = $_POST['source_url'];
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		$aes_key = $_POST['aes_key'];
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		// Find our user's account
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		$r = q("SELECT * FROM `user` WHERE `nickname` = '%s' LIMIT 1",
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			dbesc($node));
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		if(! count($r)) {
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			xml_status(3); // failure
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		}
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		$my_prvkey = $r[0]['prvkey'];
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		$local_uid = $r[0]['uid'];
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		$decrypted_source_url = "";
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		// verify everything
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		openssl_private_decrypt($source_url,$decrypted_source_url,$my_prvkey);
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		$ret = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
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			dbesc($decrypted_source_url),
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			intval($local_uid));
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		if(! count($ret)) {
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			// this is either a bogus confirmation or we deleted the original introduction.
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			xml_status(3); 
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		}
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		// Decrypt all this stuff we just received
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		$foreign_pubkey = $ret[0]['site-pubkey'];
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		$dfrn_record = $ret[0]['id'];
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		$decrypted_dfrn_id = "";
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		openssl_public_decrypt($dfrn_id,$decrypted_dfrn_id,$foreign_pubkey);
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		if(strlen($aes_key)) {
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			$decrypted_aes_key = "";
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			openssl_private_decrypt($aes_key,$decrypted_aes_key,$my_prvkey);
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			$dfrn_pubkey = openssl_decrypt($public_key,'AES-256-CBC',$decrypted_aes_key);
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		}
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		else {
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			$dfrn_pubkey = $public_key;
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		}
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		$r = q("SELECT * FROM `contact` WHERE `dfrn-id` = '%s' LIMIT 1",
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			dbesc($decrypted_dfrn_id),
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			intval($local_uid));
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		if(count($r))
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			xml_status(1); // Birthday paradox - duplicate dfrn-id
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		$r = q("UPDATE `contact` SET `dfrn-id` = '%s', `pubkey` = '%s' WHERE `id` = %d LIMIT 1",
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			dbesc($decrypted_dfrn_id),
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			dbesc($dfrn_pubkey),
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			intval($dfrn_record));
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		if($r) {
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			// We're good but now we have to scrape the profile photo and send notifications.
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			require_once("Photo.php");
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			$photo_failure = false;
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			$r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
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				intval($dfrn_record));
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			if(count($r)) {
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				$filename = basename($r[0]['photo']);
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				$img_str = fetch_url($r[0]['photo'],true);
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				$img = new Photo($img_str);
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				if($img) {
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					$img->scaleImageSquare(175);
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					$hash = hash('md5',uniqid(mt_rand(),true));
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					$r = $img->store($local_uid, $dfrn_record, $hash, $filename, t('Contact Photos') , 4);
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					if($r === false)
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						$photo_failure = true;
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					$img->scaleImage(80);
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					$r = $img->store($local_uid, $dfrn_record, $hash, $filename, t('Contact Photos') , 5);
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					if($r === false)
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						$photo_failure = true;
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					$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
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					$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';	
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				}
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				else
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					$photo_failure = true;
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			}
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			else
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				$photo_failure = true;
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			if($photo_failure) {
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				$photo = $a->get_baseurl() . '/images/default-profile.jpg';
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				$thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
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			}
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			$r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0, `pending` = 0 WHERE `id` = %d LIMIT 1",
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				dbesc($photo),
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				dbesc($thumb),
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				intval($dfrn_record)
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			);
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			if($r === false)
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				notice( t("Unable to set contact photo info.") . EOL);
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			// Otherwise everything seems to have worked and we are almost done. Yay!
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			// Send an email notification
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			$r = q("SELECT * FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
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				WHERE `contact`.`id` = %d LIMIT 1",
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				intval($dfrn_record));
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			if((count($r)) && ($r[0]['notify-flags'] & NOTIFY_CONFIRM)) {
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				$tpl = file_get_contents('view/intro_complete_eml.tpl');
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				$email_tpl = replace_macros($tpl, array(
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					'$sitename' => $a->config['sitename'],
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					'$siteurl' =>  $a->get_baseurl(),
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					'$username' => $r[0]['username'],
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					'$email' => $r[0]['email'],
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					'$fn' => $r[0]['name'],
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					'$dfrn_url' => $r[0]['url'],
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					'$uid' => $newuid )
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				);
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				$res = mail($r[0]['email'], t("Introduction accepted at ") . $a->config['sitename'],
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					$email_tpl,t("From: Administrator@") . $_SERVER[SERVER_NAME] );
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				if(!$res) {
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					notice( t("Email notification failed.") . EOL );
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				}
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			}
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			xml_status(0); // Success
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			return; // NOTREACHED
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		}
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		else {
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			xml_status(2);	// Hopefully temporary problem that can be retried.
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		}
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		return; // NOTREACHED
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	////////////////////// End of this scenario ///////////////////////////////////////////////
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	}
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	else {
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		// We are processing a local confirmation initiated on this system by our user to an external introduction.
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		$uid = $_SESSION['uid'];
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		if(! $uid) {
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			notice( t("Permission denied.") . EOL );
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			return;
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		}	
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		$dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
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		$intro_id = intval($_POST['intro_id']);
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		$r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `uid` = %d LIMIT 1",
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				dbesc($dfrn_id),
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				intval($uid)
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				);
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		if((! $r) || (! count($r))) {
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			notice( t('Node does not exist.') . EOL );
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			return;
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		}
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		$contact_id = $r[0]['id'];
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		$site_pubkey = $r[0]['site-pubkey'];
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		$dfrn_confirm = $r[0]['confirm'];
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		$aes_allow = $r[0]['aes_allow'];
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		$res=openssl_pkey_new(array(
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        		'digest_alg' => 'whirlpool',
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        		'private_key_bits' => 4096,
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			'encrypt_key' => false ));
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		$private_key = '';
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		openssl_pkey_export($res, $private_key);
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		$pubkey = openssl_pkey_get_details($res);
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		$public_key = $pubkey["key"];
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		$r = q("UPDATE `contact` SET `issued-pubkey` = '%s', `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
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			dbesc($public_key),
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			dbesc($private_key),
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			intval($contact_id),
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			intval($uid) 
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		);
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		$params = array();
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		$src_aes_key = random_string();
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		$result = "";
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		openssl_private_encrypt($dfrn_id,$result,$a->user['prvkey']);
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		$params['dfrn_id'] = $result;
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		$params['public_key'] = $public_key;
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		openssl_public_encrypt($_SESSION['my_url'], $params['source_url'], $site_pubkey);
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		if($aes_allow && function_exists('openssl_encrypt')) {
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			openssl_public_encrypt($src_aes_key, $params['aes_key'], $site_pubkey);
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			$params['public_key'] = openssl_encrypt($public_key,'AES-256-CBC',$src_aes_key);
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		}
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		$res = post_url($dfrn_confirm,$params);
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// uncomment the following two lines and comment the following xml/status lines
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// to debug the remote confirmation section (when both confirmations 
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// and responses originate on this system)
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// echo $res;
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// $status = 0;
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		$xml = simplexml_load_string($res);
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		$status = (int) $xml->status;
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		switch($status) {
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			case 0:
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				notice( t("Confirmation completed successfully") . EOL);
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				break;
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			case 1:
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				// birthday paradox - generate new dfrn-id and fall through.
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				$new_dfrn_id = random_string();
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				$r = q("UPDATE contact SET `issued-id` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
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					dbesc($new_dfrn_id),
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					intval($contact_id),
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					intval($uid) 
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				);
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			case 2:
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				notice( t("Temporary failure. Please wait and try again.") . EOL);
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				break;
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			case 3:
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				notice( t("Introduction failed or was revoked. Cannot complete.") . EOL);
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				break;
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		}
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		if(($status == 0 || $status == 3) && ($intro_id)) {
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			//delete the notification
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			$r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
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				intval($intro_id),
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				intval($uid)
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			);
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		}
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		if($status != 0) 
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			return;
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		require_once("Photo.php");
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		$photo_failure = false;
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		$r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
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			intval($contact_id));
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		if(count($r)) {
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			$filename = basename($r[0]['photo']);
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			$img_str = fetch_url($r[0]['photo'],true);
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			$img = new Photo($img_str);
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			if($img) {
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				$img->scaleImageSquare(175);
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				$hash = hash('md5',uniqid(mt_rand(),true));
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				$r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 4 );
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				if($r === false)
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					$photo_failure = true;
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				$img->scaleImage(80);
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				$r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 5 );
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				if($r === false)
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					$photo_failure = true;
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				$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
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				$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
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			}
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			else
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				$photo_failure = true;
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		}
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		else
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			$photo_failure = true;
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		if($photo_failure) {
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			$photo = $a->get_baseurl() . '/images/default-profile.jpg';
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			$thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
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		}
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		$r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0, `pending` = 0 WHERE `id` = %d LIMIT 1",
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			dbesc($photo),
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			dbesc($thumb),
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			intval($contact_id)
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		);
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		if($r === false)
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			notice( t('Unable to set contact photo.') . EOL);
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		goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
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		return;  //NOTREACHED
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	}
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	return;
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}
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