<?php
-// There are two possible entry points.
-
+/*
+ * Module: dfrn_confirm
+ * Purpose: Friendship acceptance for DFRN contacts
+ *
+ * There are two possible entry points and three scenarios.
+ *
+ * 1. A form was submitted by our user approving a friendship that originated elsewhere.
+ * This may also be called from dfrn_request to automatically approve a friendship.
+ *
+ * 2. We may be the target or other side of the conversation to scenario 1, and will
+ * interact with that process on our own user's behalf.
+ *
+ */
function dfrn_confirm_post(&$a,$handsfree = null) {
if(is_array($handsfree)) {
- // called directly from dfrn_request due to automatic friend acceptance
- // any $_POST parameters we may require are supplied in the $handsfree array
+ /**
+ * We were called directly from dfrn_request due to automatic friend acceptance.
+ * Any $_POST parameters we may require are supplied in the $handsfree array.
+ *
+ */
$node = $handsfree['node'];
$a->interactive = false; // notice() becomes a no-op since nobody is there to see it
$node = $a->argv[1];
}
- // Main entry point. Our user received a friend request notification (perhaps
- // from another site) and clicked 'Approve'. $POST['source_url'] is not set.
- // OR we have been called directly from dfrn_request ($handsfree != null) due to
- // this being a page type which supports automatic friend acceptance.
+ /**
+ *
+ * Main entry point. Scenario 1. Our user received a friend request notification (perhaps
+ * from another site) and clicked 'Approve'.
+ * $POST['source_url'] is not set. If it is, it indicates Scenario 2.
+ *
+ * We may also have been called directly from dfrn_request ($handsfree != null) due to
+ * this being a page type which supports automatic friend acceptance. That is also Scenario 1
+ * since we are operating on behalf of our registered user to approve a friendship.
+ *
+ */
if(! x($_POST,'source_url')) {
}
- // These come from either the friend request notification form or $handsfree array.
+ // These data elements may come from either the friend request notification form or $handsfree array.
if(is_array($handsfree)) {
- $dfrn_id = $handsfree['dfrn_id'];
- $intro_id = $handsfree['intro_id'];
- $duplex = $handsfree['duplex'];
logger('dfrn_confirm: Confirm in handsfree mode');
+ $dfrn_id = $handsfree['dfrn_id'];
+ $intro_id = $handsfree['intro_id'];
+ $duplex = $handsfree['duplex'];
}
else {
- $dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
- $intro_id = intval($_POST['intro_id']);
- $duplex = intval($_POST['duplex']);
- $cid = intval($_POST['contact_id']);
+ $dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
+ $intro_id = ((x($_POST,'intro_id')) ? intval($_POST['intro_id']) : 0 );
+ $duplex = ((x($_POST,'duplex')) ? intval($_POST['duplex']) : 0 );
+ $cid = ((x($_POST,'contact_id')) ? intval($_POST['contact_id']) : 0 );
}
+ /**
+ *
+ * Ensure that dfrn_id has precedence when we go to find the contact record.
+ * We only want to search based on contact id if there is no dfrn_id,
+ * e.g. for OStatus network followers.
+ *
+ */
+
+ if(strlen($dfrn_id))
+ $cid = 0;
+
logger('dfrn_confirm: Confirming request for dfrn_id (issued) ' . $dfrn_id);
+ if($cid)
+ logger('dfrn_confirm: Confirming follower with contact_id: ' . $cid);
- // 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.
- // There won't be any dfrn_id if this is a network follower, so use the contact_id instead.
+ /**
+ *
+ * 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.
+ * There won't be any dfrn_id if this is a network follower, so use the contact_id instead.
+ *
+ */
$r = q("SELECT * FROM `contact` WHERE ( ( `issued-id` != '' AND `issued-id` = '%s' ) OR ( `id` = %d AND `id` != 0 ) ) AND `uid` = %d LIMIT 1",
- dbesc($dfrn_id),
- intval($cid),
- intval($uid)
+ dbesc($dfrn_id),
+ intval($cid),
+ intval($uid)
);
if(! count($r)) {
+ logger('dfrn_confirm: Contact not found in DB.');
notice( t('Contact not found.') . EOL );
return;
}
if($network === 'dfrn') {
- // 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.
+ /**
+ *
+ * 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' => 'sha1',
'encrypt_key' => false )
);
-
$private_key = '';
openssl_pkey_export($res, $private_key);
$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.
+ /**
+ *
+ * Per the DFRN protocol, 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.
+ *
+ */
$src_aes_key = random_string();
if($duplex == 1)
$params['duplex'] = 1;
- logger('dfrn_confirm: Confirm: posted data: ' . print_r($params,true), LOGGER_DATA);
+ logger('dfrn_confirm: Confirm: posting data to ' . $dfrn_confirm . ': ' . print_r($params,true), LOGGER_DATA);
// POST all this stuff to the other site.
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.
+
+ /*
+ *
+ * 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.
+ *
+ * We will also update the contact record with the nature and scope of the relationship.
+ *
+ */
require_once("Photo.php");
);
}
else {
+ // $network !== 'dfrn'
$notify = '';
$poll = '';
- // $network !== 'dfrn'
-
$arr = lrdd($contact['url']);
if(count($arr)) {
foreach($arr as $link) {
if($handsfree === null)
goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
- return; //NOTREACHED
-
+ else
+ 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.
+ /**
+ *
+ *
+ * End of Scenario 1. [Local confirmation of remote friend request].
+ *
+ * Begin Scenario 2. 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.
- $public_key = $_POST['public_key'];
- $dfrn_id = hex2bin($_POST['dfrn_id']);
- $source_url = hex2bin($_POST['source_url']);
- $aes_key = $_POST['aes_key'];
- $duplex = $_POST['duplex'];
- $version_id = (float) $_POST['dfrn_version'];
+ $public_key = ((x($_POST,'public_key')) ? $_POST['public_key'] : '');
+ $dfrn_id = ((x($_POST,'dfrn_id')) ? hex2bin($_POST['dfrn_id']) : '');
+ $source_url = ((x($_POST,'source_url')) ? hex2bin($_POST['source_url']) : '');
+ $aes_key = ((x($_POST,'aes_key')) ? $_POST['aes_key'] : '');
+ $duplex = ((x($_POST,'duplex')) ? intval($_POST['duplex']) : 0 );
+ $version_id = ((x($_POST,'dfrn_version')) ? (float) $_POST['dfrn_version'] : 2.0);
logger('dfrn_confirm: requestee contacted: ' . $node);
projects / friendica.git / commitdiff