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Debugged implementation of Diaspora relayable_retractions

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Diaspora "relayable_retraction" is now supported by Friendica.
The following should now work:

	Friendica top-level post:
	Diaspora comment deleted, disappears in Friendica
	Friendica comment deleted, disappears in Diaspora
	Diaspora like retracted, disappears in Friendica
	Friendica like retracted, disappears in Diaspora

	Diaspora top-level post:
	Same

There are still exceptions, however. First, Friendica and Diaspora
seem to frequently reject comments with an "invalid signature" error.
This can probably be fixed.

Also, some comments/likes/retractions seem to just disappear on the
Diaspora side. In the Diaspora log these seem to be accompanied by a
"not a valid object" error, often preceeded by a "received a comment
but no corresponding post" error. These seem to be purely internal,
since sometimes it works for some Diaspora contacts but not others.
This commit is contained in:
Zach Prezkuta 2012-06-03 14:32:17 -06:00
parent 06263f72a8
commit 9920fb39e5
3 changed files with 38 additions and 28 deletions
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0
include/diaspora.php Normal file → Executable file
View file

4
include/items.php Normal file → Executable file
View file

@ -3300,7 +3300,9 @@ function drop_item($id,$interactive = true) {
if(count($r)) { if(count($r)) {
// The below handle only works for NETWORK_DFRN. I think that's ok, because this function // The below handle only works for NETWORK_DFRN. I think that's ok, because this function
// only handles DFRN deletes // only handles DFRN deletes
$handle = $r['nick'] . '@' . substr($r['url'], strpos($r['url'],'://') + 3, strpos($r['url'],'/profile') - 1); $handle_baseurl_start = strpos($r['url'],'://') + 3;
$handle_baseurl_length = strpos($r['url'],'/profile') - $handle_baseurl_start;
$handle = $r['nick'] . '@' . substr($r['url'], $handle_baseurl_start, $handle_baseurl_length);
$authorsig = ''; $authorsig = '';
} }
} }

62
mod/like.php Normal file → Executable file
View file

@ -105,7 +105,7 @@ function like_content(&$a) {
} }
$r = q("SELECT `id` FROM `item` WHERE `verb` = '%s' AND `deleted` = 0 $r = q("SELECT * FROM `item` WHERE `verb` = '%s' AND `deleted` = 0
AND `contact-id` = %d AND ( `parent` = '%s' OR `parent-uri` = '%s') LIMIT 1", AND `contact-id` = %d AND ( `parent` = '%s' OR `parent-uri` = '%s') LIMIT 1",
dbesc($activity), dbesc($activity),
intval($contact['id']), intval($contact['id']),
@ -113,15 +113,17 @@ function like_content(&$a) {
dbesc($item_id) dbesc($item_id)
); );
if(count($r)) { if(count($r)) {
$like_item = $r[0];
// Already voted, undo it // Already voted, undo it
$r = q("UPDATE `item` SET `deleted` = 1, `changed` = '%s' WHERE `id` = %d LIMIT 1", $r = q("UPDATE `item` SET `deleted` = 1, `changed` = '%s' WHERE `id` = %d LIMIT 1",
dbesc(datetime_convert()), dbesc(datetime_convert()),
intval($r[0]['id']) intval($like_item['id'])
); );
// Clean up the `sign` table // Clean up the `sign` table
$r2 = q("DELETE FROM `sign` WHERE `iid` = %d", $r = q("DELETE FROM `sign` WHERE `iid` = %d",
intval($r[0]['id']) intval($like_item['id'])
); );
// Save the author information for the unlike in case we need to relay to Diaspora // Save the author information for the unlike in case we need to relay to Diaspora
@ -134,27 +136,29 @@ function like_content(&$a) {
// likes on photos, so don't bother. // likes on photos, so don't bother.
if(($activity === ACTIVITY_LIKE) && (! $item['resource-id'])) { if(($activity === ACTIVITY_LIKE) && (! $item['resource-id'])) {
$signed_text = $r[0]['guid'] . ';' . 'Like'; $signed_text = $like_item['guid'] . ';' . 'Like';
if( contact['network'] === NETWORK_DIASPORA) if( $contact['network'] === NETWORK_DIASPORA)
$diaspora_handle = $contact['addr']; $diaspora_handle = $contact['addr'];
else { // Only works for NETWORK_DFRN else { // Only works for NETWORK_DFRN
$contact_baseurl = substr($contact['url'], strpos($contact['url'],'://') + 3, strpos($contact['url'],'/profile') - 1); $contact_baseurl_start = strpos($contact['url'],'://') + 3;
$contact_baseurl_length = strpos($contact['url'],'/profile') - $contact_baseurl_start;
$contact_baseurl = substr($contact['url'], $contact_baseurl_start, $contact_baseurl_length);
$diaspora_handle = $contact['nick'] . '@' . $contact_baseurl; $diaspora_handle = $contact['nick'] . '@' . $contact_baseurl;
// Get contact's private key if he's a user of the local Friendica server // Get contact's private key if he's a user of the local Friendica server
$r2 = q("SELECT `contact`.`uid` FROM `contact` WHERE `url` = '%s' AND `self` = 1 LIMIT 1", $r = q("SELECT `contact`.`uid` FROM `contact` WHERE `url` = '%s' AND `self` = 1 LIMIT 1",
dbesc(contact['url']) dbesc($contact['url'])
); );
if( $r2) { if( $r) {
$contact_uid = $r2['uid']; $contact_uid = $r['uid'];
$r2 = q("SELECT prvkey FROM user WHERE id = %d LIMIT 1", $r = q("SELECT prvkey FROM user WHERE uid = %d LIMIT 1",
intval($contact_uid) intval($contact_uid)
); );
if( $r2) if( $r)
$authorsig = base64_encode(rsa_sign($signed_text,$r2['prvkey'],'sha256')); $authorsig = base64_encode(rsa_sign($signed_text,$r['prvkey'],'sha256'));
} }
} }
@ -162,15 +166,17 @@ function like_content(&$a) {
$authorsig = ''; $authorsig = '';
q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ", q("insert into sign (`retract_iid`,`signed_text`,`signature`,`signer`) values (%d,'%s','%s','%s') ",
intval($r[0]['id']), intval($like_item['id']),
dbesc($signed_text), dbesc($signed_text),
dbesc($authorsig), dbesc($authorsig),
dbesc($diaspora_handle) dbesc($diaspora_handle)
); );
} }
// proc_run('php',"include/notifier.php","like","$post_id"); // $post_id isn't defined here! // proc_run('php',"include/notifier.php","like","$post_id"); // $post_id isn't defined here!
proc_run('php',"include/notifier.php","like","$r[0]['id']"); $like_item_id = $like_item['id'];
proc_run('php',"include/notifier.php","like","$like_item_id");
return; return;
} }
@ -251,25 +257,27 @@ EOT;
// only checks the parent_author_signature if it doesn't have to relay further // only checks the parent_author_signature if it doesn't have to relay further
if(($activity === ACTIVITY_LIKE) && ($post_type === t('status'))) { if(($activity === ACTIVITY_LIKE) && ($post_type === t('status'))) {
if( contact['network'] === NETWORK_DIASPORA) if( $contact['network'] === NETWORK_DIASPORA)
$diaspora_handle = $contact['addr']; $diaspora_handle = $contact['addr'];
else { // Only works for NETWORK_DFRN else { // Only works for NETWORK_DFRN
$contact_baseurl = substr($contact['url'], strpos($contact['url'],'://') + 3, strpos($contact['url'],'/profile') - 1); $contact_baseurl_start = strpos($contact['url'],'://') + 3;
$contact_baseurl_length = strpos($contact['url'],'/profile') - $contact_baseurl_start;
$contact_baseurl = substr($contact['url'], $contact_baseurl_start, $contact_baseurl_length);
$diaspora_handle = $contact['nick'] . '@' . $contact_baseurl; $diaspora_handle = $contact['nick'] . '@' . $contact_baseurl;
// Get contact's private key if he's a user of the local Friendica server // Get contact's private key if he's a user of the local Friendica server
$r2 = q("SELECT `contact`.`uid` FROM `contact` WHERE `url` = '%s' AND `self` = 1 LIMIT 1", $r = q("SELECT `contact`.`uid` FROM `contact` WHERE `url` = '%s' AND `self` = 1 LIMIT 1",
dbesc(contact['url']) dbesc($contact['url'])
); );
if( $r2) { if( $r) {
$contact_uid = $r2['uid']; $contact_uid = $r['uid'];
$r2 = q("SELECT prvkey FROM user WHERE id = %d LIMIT 1", $r = q("SELECT prvkey FROM user WHERE uid = %d LIMIT 1",
intval($contact_uid) intval($contact_uid)
); );
if( $r2) if( $r)
$contact_uprvkey = $r2['prvkey']; $contact_uprvkey = $r['prvkey'];
} }
} }
@ -278,8 +286,8 @@ EOT;
); );
if( $r) { if( $r) {
$p = q("SELECT guid FROM `item` WHERE id = %d AND parent = %d LIMIT 1", $p = q("SELECT guid FROM `item` WHERE id = %d AND parent = %d LIMIT 1",
intval($r[0]['parent'), intval($r[0]['parent']),
intval($r[0]['parent') intval($r[0]['parent'])
); );
if( $p) { if( $p) {
$signed_text = $r[0]['guid'] . ';Post;' . $p[0]['guid'] . ';true;' . $diaspora_handle; $signed_text = $r[0]['guid'] . ';Post;' . $p[0]['guid'] . ';true;' . $diaspora_handle;