Initial checkin

1 files changed, 290 insertions, 0 deletions

diff --git a/mod/dfrn_request.php b/mod/dfrn_request.php
new file mode 100644
index 000000000..ef3c7274b
--- /dev/null
+++ b/mod/dfrn_request.php
@@ -0,0 +1,290 @@
+<?php
+
+if(! function_exists('dfrn_request_init')) {
+function dfrn_request_init(&$a) {
+
+	if($_SESSION['authenticated']) {
+		// choose which page to show (could be remote auth)
+
+	}
+
+	if($a->argc > 1)
+		$which = $a->argv[1];
+
+	require_once('mod/profile.php');
+	profile_init($a,$which);
+
+	return;
+}}
+
+
+if(! function_exists('dfrn_request_post')) {
+function dfrn_request_post(&$a) {
+
+	if(($a->argc != 2) || (! count($a->profile)))
+		return;
+
+
+	if($_POST['cancel']) {
+		goaway($a->get_baseurl());
+	} 
+
+	// callback to local site after remote request and local confirm
+
+	if((x($_POST,'localconfirm')) && ($_POST['localconfirm'] == 1) 
+		&& (x($_SESSION,'authenticated')) && (x($_SESSION,'uid'))
+		&& ($_SESSION['uid'] == $a->argv[1]) && (x($_POST,'dfrn_url'))) {
+
+		$dfrn_url = notags(trim($_POST['dfrn_url']));
+		$aes_allow = (((x($_POST,'aes_allow')) && ($_POST['aes_allow'] == 1)) ? 1 : 0);
+		$confirm_key = ((x($_POST,'confirm_key')) ? $_POST['confirm_key'] : "");
+		$failed = false;
+
+		require_once('Scrape.php');
+
+		if(x($dfrn_url)) {
+
+			$parms = scrape_dfrn($dfrn_url);
+
+			if(! count($parms)) {
+				$_SESSION['sysmsg'] .= 'URL is not valid or does not contain profile information.' . EOL ;
+				$failed = true;
+			}
+			else {
+				if(! x($parms,'fn'))
+					$_SESSION['sysmsg'] .= 'Warning: DFRN profile has no identifiable owner name.' . EOL ;
+				if(! x($parms,'photo'))
+					$_SESSION['sysmsg'] .= 'Warning: DFRN profile has no profile photo.' . EOL ;
+				$invalid = validate_dfrn($parms);		
+				if($invalid) {
+					echo $invalid . ' required DFRN parameter' 
+						. (($invalid == 1) ? " was " : "s were " )
+						. "not found at the given URL" . '<br />';
+
+					$failed = true;
+				}
+			}
+		}
+		if(! $failed) {
+
+			$dfrn_request = $parms['dfrn-request'];
+			/////////////////////////
+			dbesc_array($parms);
+			////////////////////////
+
+			$r = q("INSERT INTO `contact` ( `uid`, `created`,`url`, `name`, `photo`, `site-pubkey`,
+				`request`, `confirm`, `notify`, `poll`, `aes_allow`) 
+				VALUES ( %d, '%s', '%s', '%s' , '%s', '%s', '%s', '%s', '%s', '%s', %d)",
+				intval($_SESSION['uid']),
+				datetime_convert(),
+				dbesc($dfrn_url),
+				$parms['fn'],
+				$parms['photo'],
+				$parms['key'],
+				$parms['dfrn-request'],
+				$parms['dfrn-confirm'],
+				$parms['dfrn-notify'],
+				$parms['dfrn-poll'],
+				intval($aes_allow)
+			);
+			if($r === false)
+				$_SESSION['sysmsg'] .= "Failed to create contact." . EOL;
+			else
+				$_SESSION['sysmsg'] .= "Introduction complete.";
+
+			// Allow the blocked remote notification to complete
+
+			if(strlen($dfrn_request) && strlen($confirm_key))
+				$s = fetch_url($dfrn_request . '?confirm_key=' . $confirm_key);
+
+			goaway($dfrn_url);
+		}
+	}
+
+
+	// we are operating as a remote site and an introduction was requested of us.
+	// Scrape the originating DFRN-URL for everything we need. Create a contact record
+	// and an introduction to show our user next time he/she logs in.
+	// Finally redirect back to the originator so that their site can record the request.
+	// If our user confirms the request, a record of it will need to exist on the 
+	// originator's site in order for the confirmation process to complete.. 
+
+	if($a->profile['nickname'])
+		$tailname = $a->profile['nickname'];
+	else
+		$tailname = $a->profile['uid'];
+
+	$uid = $a->profile['uid'];
+
+	$failed = false;
+
+	require_once('Scrape.php');
+
+	if( x($_POST,'dfrn_url')) {
+
+		$url = trim($_POST['dfrn_url']);
+		if(x($url)) {
+			$parms = scrape_dfrn($url);
+
+			if(! count($parms)) {
+				$_SESSION['sysmsg'] .= 'URL is not valid or does not contain profile information.' . EOL ;
+				$failed = true;
+			}
+			else {
+				if(! x($parms,'fn'))
+					$_SESSION['sysmsg'] .= 'Warning: DFRN profile has no identifiable owner name.' . EOL ;
+				if(! x($parms,'photo'))
+					$_SESSION['sysmsg'] .= 'Warning: DFRN profile has no profile photo.' . EOL ;
+				$invalid = validate_dfrn($parms);		
+				if($invalid) {
+					echo $invalid . ' required DFRN parameter' 
+						. (($invalid == 1) ? " was " : "s were " )
+						. "not found at the given URL" . '<br />';
+
+					$failed = true;
+				}
+			}
+		}
+
+		$ret = q("SELECT `url` FROM `contact` WHERE `url` = '%s'", dbesc($url));
+		if($ret !== false && count($ret)) {
+			$_SESSION['sysmsg'] .= 'You have already introduced yourself here.' . EOL;
+			$failed = true;
+		}
+
+
+		if(! $failed) {
+
+			$parms['url'] = $url;
+			$parms['issued-id'] = random_string();
+
+			/////////////////////////
+			dbesc_array($parms);
+			////////////////////////
+
+		$ret = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `name`, `issued-id`, `photo`, `site-pubkey`,
+			`request`, `confirm`, `notify`, `poll`, `visible` )
+			VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d )",
+			intval($uid),
+			datetime_convert(),
+			$parms['url'],
+			$parms['fn'],
+			$parms['issued-id'],
+			$parms['photo'],
+			$parms['key'],
+			$parms['dfrn-request'],
+			$parms['dfrn-confirm'],
+			$parms['dfrn-notify'],
+			$parms['dfrn-poll'],
+			((x($_POST,'visible')) ? 1 : 0 )
+			);
+	
+		}
+		if($ret === false) {
+			$_SESSION['sysmsg'] .= 'Failed to create contact record.' . EOL;
+			return;
+		}
+
+		$ret = q("SELECT `id` FROM `contact` 
+			WHERE `uid` = '%s' AND `url` = '%s' AND `issued-id` = '%s' 
+			LIMIT 1",
+			intval($uid),
+			$parms['url'],
+			$parms['issued-id']
+			);
+
+		if(($ret !== NULL)  && (count($ret)))
+			$contact_id = $ret[0]['id'];
+
+		$hash = random_string() . (string) time();   // Generate a confirm_key
+
+		if($contact_id) {
+			$ret = q("INSERT INTO `intro` ( `uid`, `contact-id`, `blocked`, `knowyou`, `note`, `hash`, `datetime`)
+			VALUES ( %d, %d, 1, %d, '%s', '%s', '%s' )",
+			intval($uid),
+			intval($contact_id),
+			((x($_POST,'knowyou') && ($_POST['knowyou'] == 1)) ? 1 : 0),
+			dbesc(trim($_POST['dfrn-request-message'])),
+			dbesc($hash),
+			dbesc(datetime_convert())
+			);
+		}
+		
+	
+		// TODO: send an email notification if our user wants one
+
+		if(! $failed) 
+			$_SESSION['sysmsg'] .= "Your introduction has been sent." . EOL;
+
+		// "Homecoming" - send the requestor back to their site to record the introduction.
+
+		$dfrn_url = bin2hex($a->get_baseurl() . "/profile/$tailname");
+		$aes_allow = ((function_exists('openssl_encrypt')) ? 1 : 0);
+
+		goaway($parms['dfrn-request'] . "?dfrn_url=$dfrn_url" . '&confirm_key=' . $hash . (($aes_allow) ? "&aes_allow=1" : ""));
+
+	}
+
+}}
+
+if(! function_exists('dfrn_request_content')) {
+function dfrn_request_content(&$a) {
+
+	
+
+	if(($a->argc != 2) || (! count($a->profile)))
+		return "";
+
+	$a->page['template'] = 'profile';
+
+	// "Homecoming". Make sure we're logged in to this site as the correct user. Then offer a confirm button
+	// to send us to the post section to record the introduction.
+
+	if(x($_GET,'dfrn_url')) {
+
+		if(! x($_SESSION,'authenticated')) {
+			$_SESSION['sysmsg'] .= "Please login to confirm introduction." . EOL;
+			return login();
+		}
+
+		// Edge case, but can easily happen in the wild. This person is authenticated, 
+		// but not as the person who needs to deal with this request.
+
+		if (($_SESSION['uid'] != $a->argv[1]) && ($a->user['nickname'] != $a->argv[1])) {
+			$_SESSION['sysmsg'] .= "Incorrect identity currently logged in. Please login to <strong>this</strong> profile." . EOL;
+			return login();
+		}
+
+		$dfrn_url = notags(trim(pack("H*" , $_GET['dfrn_url'])));
+		$aes_allow = (((x($_GET,'aes_allow')) && ($_GET['aes_allow'] == 1)) ? 1 : 0);
+		$confirm_key = (x($_GET,'confirm_key') ? $_GET['confirm_key'] : "");
+		$o .= file_get_contents("view/dfrn_req_confirm.tpl");
+		$o  = replace_macros($o,array(
+			'$dfrn_url' => $dfrn_url,
+			'$aes_allow' => (($aes_allow) ? '<input type="hidden" name="aes_allow" value="1" />' : "" ),
+			'$confirm_key' => $confirm_key,
+			'$username' => $a->user['username'], 
+			'$uid' => $_SESSION['uid'],
+			'dfrn_rawurl' => $_GET['dfrn_url']
+			));
+		return $o;
+
+	}
+	else {
+		// safe to send our user their introduction
+		if((x($_GET,'confirm_key')) && strlen($_GET['confirm_key'])) {
+			$r = q("UPDATE `intro` SET `blocked` = 0 WHERE `hash` = '%s' LIMIT 1",
+				dbesc($_GET['confirm_key'])
+			);
+			return;
+		}
+
+
+	// Outside request. Display our user's introduction form. 
+
+
+	$o = file_get_contents("view/dfrn_request.tpl");
+	$o = replace_macros($o,array('$uid' => $a->profile['uid']));
+	return $o;
+	}
+}}
\ No newline at end of file