A bit more telemetry of friend confirms and lots of extra doco
to understand what is happening and why.
This commit is contained in:
Mike Macgirvin
parent
3531f466e5
commit
524f73e306
|
|
@ -1,12 +1,288 @@
|
|||
<?php
|
||||
|
||||
|
||||
// There are two possible entry points. Both are called via POST.
|
||||
|
||||
function dfrn_confirm_post(&$a) {
|
||||
|
||||
if($a->argc > 1)
|
||||
$node = $a->argv[1];
|
||||
|
||||
// Main entry point. Our user received a friend request notification (perhaps
|
||||
// from another site) and clicked 'Accept'. $POST['source_url'] is not set.
|
||||
// They will perform the following:
|
||||
|
||||
if(! x($_POST,'source_url')) {
|
||||
|
||||
$uid = get_uid();
|
||||
|
||||
if(! $uid) {
|
||||
notice( t('Permission denied.') . EOL );
|
||||
return;
|
||||
}
|
||||
|
||||
// These come from the friend request notification form.
|
||||
|
||||
$dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
|
||||
$intro_id = intval($_POST['intro_id']);
|
||||
$duplex = intval($_POST['duplex']);
|
||||
|
||||
|
||||
// The other person will have been issued an ID when they first requested friendship.
|
||||
// Locate their record. At this time, their record will have both pending and blocked set to 1.
|
||||
|
||||
$r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `uid` = %d LIMIT 1",
|
||||
dbesc($dfrn_id),
|
||||
intval($uid)
|
||||
);
|
||||
|
||||
if(! count($r)) {
|
||||
notice( t('Contact not found.') . EOL );
|
||||
return;
|
||||
}
|
||||
|
||||
$contact_id = $r[0]['id'];
|
||||
$relation = $r[0]['rel'];
|
||||
$site_pubkey = $r[0]['site-pubkey'];
|
||||
$dfrn_confirm = $r[0]['confirm'];
|
||||
$aes_allow = $r[0]['aes_allow'];
|
||||
|
||||
|
||||
// Generate a key pair for all further communications with this person.
|
||||
// We have a keypair for every contact, and a site key for unknown people.
|
||||
// This provides a means to carry on relationships with other people if
|
||||
// any single key is compromised. It is a robust key. We're much more
|
||||
// worried about key leakage than anybody cracking it.
|
||||
|
||||
$res = openssl_pkey_new(array(
|
||||
'digest_alg' => 'whirlpool',
|
||||
'private_key_bits' => 4096,
|
||||
'encrypt_key' => false )
|
||||
);
|
||||
|
||||
|
||||
$private_key = '';
|
||||
|
||||
openssl_pkey_export($res, $private_key);
|
||||
|
||||
$pubkey = openssl_pkey_get_details($res);
|
||||
$public_key = $pubkey["key"];
|
||||
|
||||
// Save the private key. Send them the public key.
|
||||
|
||||
$r = q("UPDATE `contact` SET `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
|
||||
dbesc($private_key),
|
||||
intval($contact_id),
|
||||
intval($uid)
|
||||
);
|
||||
|
||||
|
||||
$params = array();
|
||||
|
||||
// Per the protocol document, we will verify both ends by encrypting the dfrn_id with our
|
||||
// site private key (person on the other end can decrypt it with our site public key).
|
||||
// Then encrypt our profile URL with the other person's site public key. They can decrypt
|
||||
// it with their site private key. If the decryption on the other end fails for either
|
||||
// item, it indicates tampering or key failure on at least one site and we will not be
|
||||
// able to provide a secure communication pathway.
|
||||
|
||||
// If other site is willing to accept full encryption, (aes_allow is 1 AND we have php5.3
|
||||
// or later) then we encrypt the personal public key we send them using AES-256-CBC and a
|
||||
// random key which is encrypted with their site public key.
|
||||
|
||||
// Note: We can send any of these things as binary blobs because they are being POST'ed.
|
||||
// Any protocol conversations (notify, poll) which perform GET require bin2hex of all the
|
||||
// binary stuff.
|
||||
|
||||
$src_aes_key = random_string();
|
||||
|
||||
$result = '';
|
||||
openssl_private_encrypt($dfrn_id,$result,$a->user['prvkey']);
|
||||
|
||||
$params['dfrn_id'] = $result;
|
||||
$params['public_key'] = $public_key;
|
||||
|
||||
|
||||
$my_url = $a->get_baseurl() . '/profile/' . $a->user['nickname'];
|
||||
|
||||
openssl_public_encrypt($my_url, $params['source_url'], $site_pubkey);
|
||||
|
||||
if($aes_allow && function_exists('openssl_encrypt')) {
|
||||
openssl_public_encrypt($src_aes_key, $params['aes_key'], $site_pubkey);
|
||||
$params['public_key'] = openssl_encrypt($public_key,'AES-256-CBC',$src_aes_key);
|
||||
}
|
||||
|
||||
$params['dfrn_version'] = '2.0';
|
||||
if($duplex == 1)
|
||||
$params['duplex'] = 1;
|
||||
|
||||
// POST all this stuff to the other site.
|
||||
|
||||
$res = post_url($dfrn_confirm,$params);
|
||||
|
||||
// Now figure out what they responded. Try to be robust if the remote site is
|
||||
// having difficulty and throwing up errors of some kind.
|
||||
|
||||
$leading_junk = substr($res,0,strpos($res,'<?xml'));
|
||||
|
||||
$res = substr($res,strpos($res,'<?xml'));
|
||||
if(! strlen($res)) {
|
||||
|
||||
// No XML at all, this exchange is messed up really bad.
|
||||
// We shouldn't proceed, because the xml parser might choke,
|
||||
// and $status is going to be zero, which indicates success.
|
||||
// We can hardly call this a success.
|
||||
|
||||
notice( t('Response from remote site was not understood.') . EOL);
|
||||
return;
|
||||
}
|
||||
|
||||
if(strlen($leading_junk) && get_config('system','debugging')) {
|
||||
|
||||
// This might be more common. Mixed error text and some XML.
|
||||
// If we're configured for debugging, show the text. Proceed in either case.
|
||||
|
||||
notice( t('Unexpected response from remote site: ') . EOL . $leading_junk . EOL );
|
||||
}
|
||||
|
||||
$xml = simplexml_load_string($res);
|
||||
$status = (int) $xml->status;
|
||||
$message = unxmlify($xml->message); // human readable text of what may have gone wrong.
|
||||
switch($status) {
|
||||
case 0:
|
||||
notice( t("Confirmation completed successfully.") . EOL);
|
||||
if(strlen($message))
|
||||
notice( t('Remote site reported: ') . $message . EOL);
|
||||
break;
|
||||
case 1:
|
||||
// birthday paradox - generate new dfrn-id and fall through.
|
||||
$new_dfrn_id = random_string();
|
||||
$r = q("UPDATE contact SET `issued-id` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
|
||||
dbesc($new_dfrn_id),
|
||||
intval($contact_id),
|
||||
intval($uid)
|
||||
);
|
||||
|
||||
case 2:
|
||||
notice( t("Temporary failure. Please wait and try again.") . EOL);
|
||||
if(strlen($message))
|
||||
notice( t('Remote site reported: ') . $message . EOL);
|
||||
break;
|
||||
|
||||
|
||||
case 3:
|
||||
notice( t("Introduction failed or was revoked.") . EOL);
|
||||
if(strlen($message))
|
||||
notice( t('Remote site reported: ') . $message . EOL);
|
||||
break;
|
||||
}
|
||||
|
||||
if(($status == 0) && ($intro_id)) {
|
||||
|
||||
// Success. Delete the notification.
|
||||
|
||||
$r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
|
||||
intval($intro_id),
|
||||
intval($uid)
|
||||
);
|
||||
|
||||
}
|
||||
|
||||
if($status != 0)
|
||||
return;
|
||||
|
||||
// We have now established a relationship with the other site.
|
||||
// Let's make our own personal copy of their profile photo so we don't have
|
||||
// to always load it from their site.
|
||||
|
||||
require_once("Photo.php");
|
||||
|
||||
$photo_failure = false;
|
||||
|
||||
$r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
|
||||
intval($contact_id));
|
||||
if(count($r)) {
|
||||
|
||||
$filename = basename($r[0]['photo']);
|
||||
$img_str = fetch_url($r[0]['photo'],true);
|
||||
$img = new Photo($img_str);
|
||||
if($img->is_valid()) {
|
||||
|
||||
$img->scaleImageSquare(175);
|
||||
|
||||
$hash = photo_new_resource();
|
||||
|
||||
$r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 4 );
|
||||
|
||||
if($r === false)
|
||||
$photo_failure = true;
|
||||
|
||||
$img->scaleImage(80);
|
||||
|
||||
$r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 5 );
|
||||
|
||||
if($r === false)
|
||||
$photo_failure = true;
|
||||
|
||||
$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
|
||||
$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
|
||||
}
|
||||
else
|
||||
$photo_failure = true;
|
||||
}
|
||||
else
|
||||
$photo_failure = true;
|
||||
|
||||
if($photo_failure) {
|
||||
$photo = $a->get_baseurl() . '/images/default-profile.jpg';
|
||||
$thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
|
||||
}
|
||||
|
||||
$new_relation = REL_VIP;
|
||||
if(($relation == REL_FAN) || ($duplex))
|
||||
$new_relation = REL_BUD;
|
||||
|
||||
$r = q("UPDATE `contact` SET `photo` = '%s',
|
||||
`thumb` = '%s',
|
||||
`rel` = %d,
|
||||
`name-date` = '%s',
|
||||
`uri-date` = '%s',
|
||||
`avatar-date` = '%s',
|
||||
`blocked` = 0,
|
||||
`pending` = 0,
|
||||
`duplex` = %d,
|
||||
`network` = 'dfrn' WHERE `id` = %d LIMIT 1
|
||||
",
|
||||
dbesc($photo),
|
||||
dbesc($thumb),
|
||||
intval($new_relation),
|
||||
dbesc(datetime_convert()),
|
||||
dbesc(datetime_convert()),
|
||||
dbesc(datetime_convert()),
|
||||
intval($duplex),
|
||||
intval($contact_id)
|
||||
);
|
||||
if($r === false)
|
||||
notice( t('Unable to set contact photo.') . EOL);
|
||||
|
||||
|
||||
// Let's send our user to the contact editor in case they want to
|
||||
// do anything special with this new friend.
|
||||
|
||||
goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
|
||||
return; //NOTREACHED
|
||||
}
|
||||
|
||||
|
||||
|
||||
// End of first scenario. [Local confirmation of remote friend request].
|
||||
|
||||
|
||||
|
||||
// Begin scenario two. This is the remote response to the above scenario.
|
||||
// This will take place on the site that originally initiated the friend request.
|
||||
// In the section above where the confirming party makes a POST and
|
||||
// retrieves xml status information, they are communicating with the following code.
|
||||
|
||||
if(x($_POST,'source_url')) {
|
||||
|
||||
// We are processing an external confirmation to an introduction created by our user.
|
||||
|
|
@ -170,7 +446,7 @@ function dfrn_confirm_post(&$a) {
|
|||
intval($duplex),
|
||||
intval($dfrn_record)
|
||||
);
|
||||
if($r === false) { // should not happen unless schema is messed up
|
||||
if($r === false) { // indicates schema is messed up or total db failure
|
||||
$message = t('Unable to update your contact profile details on our system');
|
||||
xml_status(3,$message);
|
||||
}
|
||||
|
|
@ -207,229 +483,12 @@ function dfrn_confirm_post(&$a) {
|
|||
xml_status(0); // Success
|
||||
return; // NOTREACHED
|
||||
|
||||
////////////////////// End of this scenario ///////////////////////////////////////////////
|
||||
////////////////////// End of this scenario ///////////////////////////////////////////////
|
||||
}
|
||||
else {
|
||||
|
||||
// We are processing a local confirmation initiated on this system by our user to an external introduction.
|
||||
// somebody arrived here by mistake or they are fishing. Send them to the homepage.
|
||||
|
||||
$uid = get_uid();
|
||||
goaway($a->get_baseurl());
|
||||
// NOTREACHED
|
||||
|
||||
if(! $uid) {
|
||||
notice( t('Permission denied.') . EOL );
|
||||
return;
|
||||
}
|
||||
|
||||
$dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
|
||||
$intro_id = intval($_POST['intro_id']);
|
||||
$duplex = intval($_POST['duplex']);
|
||||
|
||||
$r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `uid` = %d LIMIT 1",
|
||||
dbesc($dfrn_id),
|
||||
intval($uid)
|
||||
);
|
||||
|
||||
if(! count($r)) {
|
||||
notice( t('Node does not exist.') . EOL );
|
||||
return;
|
||||
}
|
||||
|
||||
$contact_id = $r[0]['id'];
|
||||
$relation = $r[0]['rel'];
|
||||
$site_pubkey = $r[0]['site-pubkey'];
|
||||
$dfrn_confirm = $r[0]['confirm'];
|
||||
$aes_allow = $r[0]['aes_allow'];
|
||||
|
||||
$res = openssl_pkey_new(array(
|
||||
'digest_alg' => 'whirlpool',
|
||||
'private_key_bits' => 4096,
|
||||
'encrypt_key' => false )
|
||||
);
|
||||
|
||||
|
||||
$private_key = '';
|
||||
|
||||
openssl_pkey_export($res, $private_key);
|
||||
|
||||
$pubkey = openssl_pkey_get_details($res);
|
||||
$public_key = $pubkey["key"];
|
||||
|
||||
$r = q("UPDATE `contact` SET `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
|
||||
dbesc($private_key),
|
||||
intval($contact_id),
|
||||
intval($uid)
|
||||
);
|
||||
|
||||
|
||||
$params = array();
|
||||
|
||||
$src_aes_key = random_string();
|
||||
|
||||
$result = '';
|
||||
openssl_private_encrypt($dfrn_id,$result,$a->user['prvkey']);
|
||||
|
||||
$params['dfrn_id'] = $result;
|
||||
$params['public_key'] = $public_key;
|
||||
|
||||
|
||||
$my_url = $a->get_baseurl() . '/profile/' . $a->user['nickname'];
|
||||
|
||||
openssl_public_encrypt($my_url, $params['source_url'], $site_pubkey);
|
||||
|
||||
if($aes_allow && function_exists('openssl_encrypt')) {
|
||||
openssl_public_encrypt($src_aes_key, $params['aes_key'], $site_pubkey);
|
||||
$params['public_key'] = openssl_encrypt($public_key,'AES-256-CBC',$src_aes_key);
|
||||
}
|
||||
|
||||
$params['dfrn_version'] = '2.0';
|
||||
if($duplex == 1)
|
||||
$params['duplex'] = 1;
|
||||
|
||||
$res = post_url($dfrn_confirm,$params);
|
||||
|
||||
// Try to be robust if the remote site is having difficulty and throwing up
|
||||
// errors of some kind.
|
||||
|
||||
$leading_junk = substr($res,0,strpos($res,'<?xml'));
|
||||
|
||||
$res = substr($res,strpos($res,'<?xml'));
|
||||
if(! strlen($res)) {
|
||||
|
||||
// No XML at all, this exchange is messed up really bad.
|
||||
// We shouldn't proceed, because the xml parser might choke,
|
||||
// and $status is going to be zero, which indicates success.
|
||||
// We can hardly call this a success.
|
||||
|
||||
notice( t('Response from remote site was not understood.') . EOL);
|
||||
return;
|
||||
}
|
||||
|
||||
if(strlen($leading_junk) && get_config('system','debugging')) {
|
||||
|
||||
// This might be more common. Mixed error text and some XML.
|
||||
// If we're configured for debugging, show the text. Proceed in either case.
|
||||
|
||||
notice( t('Unexpected response from remote site: ') . EOL . $leading_junk . EOL );
|
||||
}
|
||||
|
||||
$xml = simplexml_load_string($res);
|
||||
$status = (int) $xml->status;
|
||||
$message = unxmlify($xml->message);
|
||||
switch($status) {
|
||||
case 0:
|
||||
notice( t("Confirmation completed successfully.") . EOL);
|
||||
if(strlen($message))
|
||||
notice( t('Remote site reported: ') . $message . EOL);
|
||||
break;
|
||||
case 1:
|
||||
// birthday paradox - generate new dfrn-id and fall through.
|
||||
$new_dfrn_id = random_string();
|
||||
$r = q("UPDATE contact SET `issued-id` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
|
||||
dbesc($new_dfrn_id),
|
||||
intval($contact_id),
|
||||
intval($uid)
|
||||
);
|
||||
|
||||
case 2:
|
||||
notice( t("Temporary failure. Please wait and try again.") . EOL);
|
||||
if(strlen($message))
|
||||
notice( t('Remote site reported: ') . $message . EOL);
|
||||
break;
|
||||
|
||||
|
||||
case 3:
|
||||
notice( t("Introduction failed or was revoked.") . EOL);
|
||||
if(strlen($message))
|
||||
notice( t('Remote site reported: ') . $message . EOL);
|
||||
break;
|
||||
}
|
||||
|
||||
if(($status == 0) && ($intro_id)) {
|
||||
|
||||
//delete the notification
|
||||
|
||||
$r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
|
||||
intval($intro_id),
|
||||
intval($uid)
|
||||
);
|
||||
|
||||
}
|
||||
|
||||
if($status != 0)
|
||||
return;
|
||||
|
||||
require_once("Photo.php");
|
||||
|
||||
$photo_failure = false;
|
||||
|
||||
$r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
|
||||
intval($contact_id));
|
||||
if(count($r)) {
|
||||
|
||||
$filename = basename($r[0]['photo']);
|
||||
$img_str = fetch_url($r[0]['photo'],true);
|
||||
$img = new Photo($img_str);
|
||||
if($img->is_valid()) {
|
||||
|
||||
$img->scaleImageSquare(175);
|
||||
|
||||
$hash = photo_new_resource();
|
||||
|
||||
$r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 4 );
|
||||
|
||||
if($r === false)
|
||||
$photo_failure = true;
|
||||
|
||||
$img->scaleImage(80);
|
||||
|
||||
$r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 5 );
|
||||
|
||||
if($r === false)
|
||||
$photo_failure = true;
|
||||
|
||||
$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
|
||||
$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
|
||||
}
|
||||
else
|
||||
$photo_failure = true;
|
||||
}
|
||||
else
|
||||
$photo_failure = true;
|
||||
|
||||
if($photo_failure) {
|
||||
$photo = $a->get_baseurl() . '/images/default-profile.jpg';
|
||||
$thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
|
||||
}
|
||||
|
||||
$new_relation = REL_VIP;
|
||||
if(($relation == REL_FAN) || ($duplex))
|
||||
$new_relation = REL_BUD;
|
||||
|
||||
$r = q("UPDATE `contact` SET `photo` = '%s',
|
||||
`thumb` = '%s',
|
||||
`rel` = %d,
|
||||
`name-date` = '%s',
|
||||
`uri-date` = '%s',
|
||||
`avatar-date` = '%s',
|
||||
`blocked` = 0,
|
||||
`pending` = 0,
|
||||
`duplex` = %d,
|
||||
`network` = 'dfrn' WHERE `id` = %d LIMIT 1
|
||||
",
|
||||
dbesc($photo),
|
||||
dbesc($thumb),
|
||||
intval($new_relation),
|
||||
dbesc(datetime_convert()),
|
||||
dbesc(datetime_convert()),
|
||||
dbesc(datetime_convert()),
|
||||
intval($duplex),
|
||||
intval($contact_id)
|
||||
);
|
||||
if($r === false)
|
||||
notice( t('Unable to set contact photo.') . EOL);
|
||||
|
||||
goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
|
||||
return; //NOTREACHED
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue