<?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;
}
}}
