1 files changed, 243 insertions, 0 deletions
diff --git a/include/follow.php b/include/follow.php
new file mode 100644
index 000000000..d92d7577d
--- /dev/null
+++ b/include/follow.php
@@ -0,0 +1,243 @@
+<?php
+
+
+//
+// Takes a $uid and a url/handle and adds a new contact
+// Currently if the contact is DFRN, interactive needs to be true, to redirect to the
+// dfrn_request page.
+
+// Otherwise this can be used to bulk add statusnet contacts, twitter contacts, etc.
+// Returns an array
+//  $return['success'] boolean true if successful
+//  $return['message'] error text if success is false.
+
+
+
+function new_contact($uid,$url,$interactive = false) {
+
+	$result = array('success' => false,'message' => '');
+
+	$a = get_app();
+
+	// remove ajax junk, e.g. Twitter
+
+	$url = str_replace('/#!/','/',$url);
+
+	if(! allowed_url($url)) {
+		$result['message'] = t('Disallowed profile URL.');
+		return $result;
+	}
+
+	if(! $url) {
+		$result['message'] = t('Connect URL missing.');
+		return $result;
+	}
+
+	$arr = array('url' => $url, 'contact' => array());
+
+	call_hooks('follow', $arr);
+
+	if(x($arr['contact'],'name')) 
+		$ret = $arr['contact'];
+	else
+		$ret = probe_url($url);
+
+	if($ret['network'] === NETWORK_DFRN) {
+		if($interactive) {
+			if(strlen($a->path))
+				$myaddr = bin2hex($a->get_baseurl() . '/profile/' . $a->user['nickname']);
+			else
+				$myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
+ 
+			goaway($ret['request'] . "&addr=$myaddr");
+		
+			// NOTREACHED
+		}
+	}
+	else {
+		if(get_config('system','dfrn_only')) {
+			$result['message'] = t('This site is not configured to allow communications with other networks.') . EOL;
+			$result['message'] != t('No compatible communication protocols or feeds were discovered.') . EOL;
+			return $result;
+		}
+	}
+	
+	// This extra param just confuses things, remove it
+	if($ret['network'] === NETWORK_DIASPORA)
+		$ret['url'] = str_replace('?absolute=true','',$ret['url']);
+
+
+	// do we have enough information?
+	
+	if(! ((x($ret,'name')) && (x($ret,'poll')) && ((x($ret,'url')) || (x($ret,'addr'))))) {
+		$result['message'] .=  t('The profile address specified does not provide adequate information.') . EOL;
+		if(! x($ret,'poll'))
+			$result['message'] .= t('No compatible communication protocols or feeds were discovered.') . EOL;
+		if(! x($ret,'name'))
+			$result['message'] .=  t('An author or name was not found.') . EOL;
+		if(! x($ret,'url'))
+			$result['message'] .=  t('No browser URL could be matched to this address.') . EOL;
+		if(strpos($url,'@') !== false) {
+			$result['message'] .=  t('Unable to match @-style Identity Address with a known protocol or email contact.') . EOL;
+			$result['message'] .=  t('Use mailto: in front of address to force email check.') . EOL;
+		}
+		return $result;
+	}
+
+	if($ret['network'] === NETWORK_OSTATUS && get_config('system','ostatus_disabled')) {
+		$result['message'] .= t('The profile address specified belongs to a network which has been disabled on this site.') . EOL;
+		$ret['notify'] = '';
+	}
+
+	if(! $ret['notify']) {
+		$result['message'] .=  t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL;
+	}
+
+	$writeable = ((($ret['network'] === NETWORK_OSTATUS) && ($ret['notify'])) ? 1 : 0);
+	$hidden = (($ret['network'] === NETWORK_MAIL) ? 1 : 0);
+
+	if($ret['network'] === NETWORK_MAIL) {
+		$writeable = 1;
+		
+	}
+	if($ret['network'] === NETWORK_DIASPORA)
+		$writeable = 1;
+
+	// check if we already have a contact
+	// the poll url is more reliable than the profile url, as we may have
+	// indirect links or webfinger links
+
+	$r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
+		intval($uid),
+		dbesc($ret['poll'])
+	);			
+
+
+	if(count($r)) {
+		// update contact
+		if($r[0]['rel'] == CONTACT_IS_FOLLOWER || ($network === NETWORK_DIASPORA && $r[0]['rel'] == CONTACT_IS_SHARING)) {
+			q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
+				intval(CONTACT_IS_FRIEND),
+				intval($r[0]['id']),
+				intval($uid)
+			);
+		}
+	}
+	else {
+
+		$new_relation = (($ret['network'] === NETWORK_MAIL) ? CONTACT_IS_FRIEND : CONTACT_IS_SHARING);
+		if($ret['network'] === NETWORK_DIASPORA)
+			$new_relation = CONTACT_IS_FOLLOWER;
+
+		// create contact record 
+		$r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `alias`, `batch`, `notify`, `poll`, `poco`, `name`, `nick`, `photo`, `network`, `pubkey`, `rel`, `priority`,
+			`writable`, `hidden`, `blocked`, `readonly`, `pending` )
+			VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, %d, 0, 0, 0 ) ",
+			intval($uid),
+			dbesc(datetime_convert()),
+			dbesc($ret['url']),
+			dbesc(normalise_link($ret['url'])),
+			dbesc($ret['addr']),
+			dbesc($ret['alias']),
+			dbesc($ret['batch']),
+			dbesc($ret['notify']),
+			dbesc($ret['poll']),
+			dbesc($ret['poco']),
+			dbesc($ret['name']),
+			dbesc($ret['nick']),
+			dbesc($ret['photo']),
+			dbesc($ret['network']),
+			dbesc($ret['pubkey']),
+			intval($new_relation),
+			intval($ret['priority']),
+			intval($writeable),
+			intval($hidden)
+		);
+	}
+
+	$r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
+		dbesc($ret['url']),
+		intval($uid)
+	);
+
+	if(! count($r)) {
+		$result['message'] .=  t('Unable to retrieve contact information.') . EOL;
+		return $result;
+	}
+
+	$contact = $r[0];
+	$contact_id  = $r[0]['id'];
+
+
+	$g = q("select def_gid from user where uid = %d limit 1",
+		intval($uid)
+	);
+	if($g && intval($g[0]['def_gid'])) {
+		require_once('include/group.php');
+		group_add_member($uid,'',$contact_id,$g[0]['def_gid']);
+	}
+
+	require_once("Photo.php");
+
+	$photos = import_profile_photo($ret['photo'],$uid,$contact_id);
+
+	$r = q("UPDATE `contact` SET `photo` = '%s', 
+			`thumb` = '%s',
+			`micro` = '%s', 
+			`name-date` = '%s', 
+			`uri-date` = '%s', 
+			`avatar-date` = '%s'
+			WHERE `id` = %d LIMIT 1
+		",
+			dbesc($photos[0]),
+			dbesc($photos[1]),
+			dbesc($photos[2]),
+			dbesc(datetime_convert()),
+			dbesc(datetime_convert()),
+			dbesc(datetime_convert()),
+			intval($contact_id)
+		);			
+
+
+	// pull feed and consume it, which should subscribe to the hub.
+
+	proc_run('php',"include/poller.php","$contact_id");
+
+	// create a follow slap
+
+	$tpl = get_markup_template('follow_slap.tpl');
+	$slap = replace_macros($tpl, array(
+		'$name' => $a->user['username'],
+		'$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
+		'$photo' => $a->contact['photo'],
+		'$thumb' => $a->contact['thumb'],
+		'$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
+		'$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
+		'$title' => '',
+		'$type' => 'text',
+		'$content' => t('following'),
+		'$nick' => $a->user['nickname'],
+		'$verb' => ACTIVITY_FOLLOW,
+		'$ostat_follow' => ''
+	));
+
+	$r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid` 
+			WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
+			intval($uid)
+	);
+
+	if(count($r)) {
+		if(($contact['network'] == NETWORK_OSTATUS) && (strlen($contact['notify']))) {
+			require_once('include/salmon.php');
+			slapper($r[0],$contact['notify'],$slap);
+		}
+		if($contact['network'] == NETWORK_DIASPORA) {
+			require_once('include/diaspora.php');
+			$ret = diaspora_share($a->user,$contact);
+			logger('mod_follow: diaspora_share returns: ' . $ret);
+		}
+	}
+
+	$result['success'] = true;
+	return $result;
+}