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more instrumentation on dfrn_confirm to help track down why it quietly gives up on occasion with no helpful log messages.

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Friendika 2010-12-08 15:30:26 -08:00
parent a42b9ea3de
commit 4d0f0f9a94
1 changed files with 116 additions and 62 deletions
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166
mod/dfrn_confirm.php
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@ -1,14 +1,28 @@
<?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'];
$a->interactive = false; // notice() becomes a no-op since nobody is there to see it
@ -19,10 +33,17 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
$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($_POST,'source_url')) {
@ -43,27 +64,44 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
}
// 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)) {
logger('dfrn_confirm: Confirm in handsfree mode');
$dfrn_id = $handsfree['dfrn_id'];
$intro_id = $handsfree['intro_id'];
$duplex = $handsfree['duplex'];
logger('dfrn_confirm: Confirm in handsfree mode');
}
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']);
$intro_id = ((x($_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),
@ -72,6 +110,7 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
);
if(! count($r)) {
logger('dfrn_confirm: Contact not found in DB.');
notice( t('Contact not found.') . EOL );
return;
}
@ -88,11 +127,15 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
if($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.
*
*/
$res = openssl_pkey_new(array(
'digest_alg' => 'sha1',
@ -100,7 +143,6 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
'encrypt_key' => false )
);
$private_key = '';
openssl_pkey_export($res, $private_key);
@ -118,16 +160,20 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
$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.
*
*/
$src_aes_key = random_string();
@ -153,7 +199,7 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
if($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.
@ -233,9 +279,16 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
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");
@ -276,12 +329,11 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
);
}
else {
// $network !== 'dfrn'
$notify = '';
$poll = '';
// $network !== 'dfrn'
$arr = lrdd($contact['url']);
if(count($arr)) {
foreach($arr as $link) {
@ -332,31 +384,33 @@ function dfrn_confirm_post(&$a,$handsfree = null) {
if($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);