Browse Source

Receiving should be complete, sending partially works

pull/2418/head
Michael Vogel 5 years ago
parent
commit
71227b5d0d
2 changed files with 534 additions and 36 deletions
  1. +495
    -36
      include/diaspora2.php
  2. +39
    -0
      include/xml.php

+ 495
- 36
include/diaspora2.php View File

@ -11,50 +11,58 @@ require_once("include/Contact.php");
require_once("include/Photo.php");
require_once("include/socgraph.php");
require_once("include/group.php");
require_once("include/api.php");
require_once("include/xml.php");
require_once("include/datetime.php");
/**
* @brief This class contain functions to work with XML data
* @brief This class contain functions to create and send Diaspora XML files
*
*/
class xml {
function from_array($array, &$xml) {
class diaspora {
if (!is_object($xml)) {
foreach($array as $key => $value) {
$root = new SimpleXMLElement("<".$key."/>");
array_to_xml($value, $root);
public static function fetch_relay() {
$dom = dom_import_simplexml($root)->ownerDocument;
$dom->formatOutput = true;
return $dom->saveXML();
}
}
$serverdata = get_config("system", "relay_server");
if ($serverdata == "")
return array();
foreach($array as $key => $value) {
if (!is_array($value) AND !is_numeric($key))
$xml->addChild($key, $value);
elseif (is_array($value))
array_to_xml($value, $xml->addChild($key));
}
}
$relay = array();
function copy(&$source, &$target, $elementname) {
if (count($source->children()) == 0)
$target->addChild($elementname, $source);
else {
$child = $target->addChild($elementname);
foreach ($source->children() AS $childfield => $childentry)
self::copy($childentry, $child, $childfield);
$servers = explode(",", $serverdata);
foreach($servers AS $server) {
$server = trim($server);
$batch = $server."/receive/public";
$relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
if (!$relais) {
$addr = "relay@".str_replace("http://", "", normalise_link($server));
$r = q("INSERT INTO `contact` (`uid`, `created`, `name`, `nick`, `addr`, `url`, `nurl`, `batch`, `network`, `rel`, `blocked`, `pending`, `writable`, `name-date`, `uri-date`, `avatar-date`)
VALUES (0, '%s', '%s', 'relay', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 1, '%s', '%s', '%s')",
datetime_convert(),
dbesc($addr),
dbesc($addr),
dbesc($server),
dbesc(normalise_link($server)),
dbesc($batch),
dbesc(NETWORK_DIASPORA),
intval(CONTACT_IS_FOLLOWER),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(datetime_convert())
);
$relais = q("SELECT `batch`, `id`, `name`,`network` FROM `contact` WHERE `uid` = 0 AND `batch` = '%s' LIMIT 1", dbesc($batch));
if ($relais)
$relay[] = $relais[0];
} else
$relay[] = $relais[0];
}
}
}
/**
* @brief This class contain functions to create and send Diaspora XML files
*
*/
class diaspora {
return $relay;
}
/**
* @brief Dispatches public messages and find the fitting receivers
@ -1180,6 +1188,9 @@ EOT;
}
private function receive_request_make_friend($importer, $contact) {
$a = get_app();
if($contact["rel"] == CONTACT_IS_FOLLOWER && in_array($importer["page-flags"], array(PAGE_FREELOVE))) {
q("UPDATE `contact` SET `rel` = %d, `writable` = 1 WHERE `id` = %d AND `uid` = %d",
intval(CONTACT_IS_FRIEND),
@ -1204,7 +1215,7 @@ EOT;
if($self && $contact["rel"] == CONTACT_IS_FOLLOWER) {
$arr = array();
$arr["uri"] = $arr["parent-uri"] = item_new_uri(App::get_hostname(), $importer["uid"]);
$arr["uri"] = $arr["parent-uri"] = item_new_uri($a->get_hostname(), $importer["uid"]);
$arr["uid"] = $importer["uid"];
$arr["contact-id"] = $self[0]["id"];
$arr["wall"] = 1;
@ -1369,7 +1380,7 @@ EOT;
// Maybe it is already a reshared item?
// Then refetch the content, since there can be many side effects with reshared posts from other networks or reshares from reshares
if (api_share_as_retweet($r[0]))
if (self::is_reshare($r[0]["body"]))
$r = array();
else
return $r[0];
@ -1639,5 +1650,453 @@ EOT;
return $message_id;
}
/*******************************************************************************************
* Here come all the functions that are needed to transmit data with the Diaspora protocol *
*******************************************************************************************/
private function get_my_handle($me) {
if ($contact["addr"] != "")
return $contact["addr"];
// Normally we should have a filled "addr" field - but in the past this wasn't the case
// So - just in case - we build the the address here.
return $me["nickname"]."@".substr(App::get_baseurl(), strpos(App::get_baseurl(),"://") + 3);
}
function build_public_message($msg, $user, $contact, $prvkey, $pubkey) {
logger("Message: ".$msg, LOGGER_DATA);
$handle = self::get_my_handle($user);
$b64url_data = base64url_encode($msg);
$data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
$type = "application/xml";
$encoding = "base64url";
$alg = "RSA-SHA256";
$signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
$signature = rsa_sign($signable_data,$prvkey);
$sig = base64url_encode($signature);
$magic_env = <<< EOT
<?xml version='1.0' encoding='UTF-8'?>
<diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
<header>
<author_id>$handle</author_id>
</header>
<me:env>
<me:encoding>base64url</me:encoding>
<me:alg>RSA-SHA256</me:alg>
<me:data type="application/xml">$data</me:data>
<me:sig>$sig</me:sig>
</me:env>
</diaspora>
EOT;
logger("magic_env: ".$magic_env, LOGGER_DATA);
return $magic_env;
}
private function build_private_message($msg, $user, $contact, $prvkey, $pubkey) {
logger("Message: ".$msg, LOGGER_DATA);
// without a public key nothing will work
if (!$pubkey) {
logger("pubkey missing: contact id: ".$contact["id"]);
return false;
}
$inner_aes_key = random_string(32);
$b_inner_aes_key = base64_encode($inner_aes_key);
$inner_iv = random_string(16);
$b_inner_iv = base64_encode($inner_iv);
$outer_aes_key = random_string(32);
$b_outer_aes_key = base64_encode($outer_aes_key);
$outer_iv = random_string(16);
$b_outer_iv = base64_encode($outer_iv);
$handle = self::get_my_handle($user);
$padded_data = pkcs5_pad($msg,16);
$inner_encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $inner_aes_key, $padded_data, MCRYPT_MODE_CBC, $inner_iv);
$b64_data = base64_encode($inner_encrypted);
$b64url_data = base64url_encode($b64_data);
$data = str_replace(array("\n", "\r", " ", "\t"), array("", "", "", ""), $b64url_data);
$type = "application/xml";
$encoding = "base64url";
$alg = "RSA-SHA256";
$signable_data = $data.".".base64url_encode($type).".".base64url_encode($encoding).".".base64url_encode($alg);
$signature = rsa_sign($signable_data,$prvkey);
$sig = base64url_encode($signature);
$decrypted_header = <<< EOT
<decrypted_header>
<iv>$b_inner_iv</iv>
<aes_key>$b_inner_aes_key</aes_key>
<author_id>$handle</author_id>
</decrypted_header>
EOT;
$decrypted_header = pkcs5_pad($decrypted_header,16);
$ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $outer_aes_key, $decrypted_header, MCRYPT_MODE_CBC, $outer_iv);
$outer_json = json_encode(array("iv" => $b_outer_iv, "key" => $b_outer_aes_key));
$encrypted_outer_key_bundle = "";
openssl_public_encrypt($outer_json, $encrypted_outer_key_bundle, $pubkey);
$b64_encrypted_outer_key_bundle = base64_encode($encrypted_outer_key_bundle);
logger("outer_bundle: ".$b64_encrypted_outer_key_bundle." key: ".$pubkey, LOGGER_DATA);
$encrypted_header_json_object = json_encode(array("aes_key" => base64_encode($encrypted_outer_key_bundle),
"ciphertext" => base64_encode($ciphertext)));
$cipher_json = base64_encode($encrypted_header_json_object);
$encrypted_header = "<encrypted_header>".$cipher_json."</encrypted_header>";
$magic_env = <<< EOT
<?xml version='1.0' encoding='UTF-8'?>
<diaspora xmlns="https://joindiaspora.com/protocol" xmlns:me="http://salmon-protocol.org/ns/magic-env" >
$encrypted_header
<me:env>
<me:encoding>base64url</me:encoding>
<me:alg>RSA-SHA256</me:alg>
<me:data type="application/xml">$data</me:data>
<me:sig>$sig</me:sig>
</me:env>
</diaspora>
EOT;
logger("magic_env: ".$magic_env, LOGGER_DATA);
return $magic_env;
}
private function build_message($msg, $user, $contact, $prvkey, $pubkey, $public = false) {
if ($public)
$magic_env = self::build_public_message($msg,$user,$contact,$prvkey,$pubkey);
else
$magic_env = self::build_private_message($msg,$user,$contact,$prvkey,$pubkey);
// The data that will be transmitted is double encoded via "urlencode", strange ...
$slap = "xml=".urlencode(urlencode($magic_env));
return $slap;
}
private function transmit($owner, $contact, $slap, $public_batch, $queue_run=false, $guid = "") {
$a = get_app();
$enabled = intval(get_config("system", "diaspora_enabled"));
if(!$enabled)
return 200;
$logid = random_string(4);
$dest_url = (($public_batch) ? $contact["batch"] : $contact["notify"]);
if (!$dest_url) {
logger("no url for contact: ".$contact["id"]." batch mode =".$public_batch);
return 0;
}
logger("transmit: ".$logid."-".$guid." ".$dest_url);
if (!$queue_run && was_recently_delayed($contact["id"])) {
$return_code = 0;
} else {
if (!intval(get_config("system", "diaspora_test"))) {
post_url($dest_url."/", $slap);
$return_code = $a->get_curl_code();
} else {
logger("test_mode");
return 200;
}
}
logger("transmit: ".$logid."-".$guid." returns: ".$return_code);
if(!$return_code || (($return_code == 503) && (stristr($a->get_curl_headers(), "retry-after")))) {
logger("queue message");
$r = q("SELECT `id` FROM `queue` WHERE `cid` = %d AND `network` = '%s' AND `content` = '%s' AND `batch` = %d LIMIT 1",
intval($contact["id"]),
dbesc(NETWORK_DIASPORA),
dbesc($slap),
intval($public_batch)
);
if(count($r)) {
logger("add_to_queue ignored - identical item already in queue");
} else {
// queue message for redelivery
add_to_queue($contact["id"], NETWORK_DIASPORA, $slap, $public_batch);
}
}
return(($return_code) ? $return_code : (-1));
}
public static function send_share($me,$contact) {
$myaddr = self::get_my_handle($me);
$theiraddr = $contact["addr"];
$data = array("XML" => array("post" => array("request" => array(
"sender_handle" => $myaddr,
"recipient_handle" => $theiraddr
))));
$msg = xml::from_array($data, $xml);
$slap = self::build_message($msg, $me, $contact, $me["prvkey"], $contact["pubkey"]);
return(self::transmit($owner,$contact,$slap, false));
}
public static function send_unshare($me,$contact) {
$myaddr = self::get_my_handle($me);
$data = array("XML" => array("post" => array("retraction" => array(
"post_guid" => $me["guid"],
"diaspora_handle" => $myaddr,
"type" => "Person"
))));
$msg = xml::from_array($data, $xml);
$slap = self::build_message($msg, $me, $contact, $me["prvkey"], $contact["pubkey"]);
return(self::transmit($owner,$contact,$slap, false));
}
function is_reshare($body) {
$body = trim($body);
// Skip if it isn't a pure repeated messages
// Does it start with a share?
if (strpos($body, "[share") > 0)
return(false);
// Does it end with a share?
if (strlen($body) > (strrpos($body, "[/share]") + 8))
return(false);
$attributes = preg_replace("/\[share(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","$1",$body);
// Skip if there is no shared message in there
if ($body == $attributes)
return(false);
$guid = "";
preg_match("/guid='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "")
$guid = $matches[1];
preg_match('/guid="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "")
$guid = $matches[1];
if ($guid != "") {
$r = q("SELECT `contact-id` FROM `item` WHERE `guid` = '%s' AND `network` IN ('%s', '%s') LIMIT 1",
dbesc($guid), NETWORK_DFRN, NETWORK_DIASPORA);
if ($r) {
$ret= array();
$ret["root_handle"] = diaspora_handle_from_contact($r[0]["contact-id"]);
$ret["root_guid"] = $guid;
return($ret);
}
}
$profile = "";
preg_match("/profile='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "")
$profile = $matches[1];
preg_match('/profile="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "")
$profile = $matches[1];
$ret= array();
$ret["root_handle"] = preg_replace("=https?://(.*)/u/(.*)=ism", "$2@$1", $profile);
if (($ret["root_handle"] == $profile) OR ($ret["root_handle"] == ""))
return(false);
$link = "";
preg_match("/link='(.*?)'/ism", $attributes, $matches);
if ($matches[1] != "")
$link = $matches[1];
preg_match('/link="(.*?)"/ism', $attributes, $matches);
if ($matches[1] != "")
$link = $matches[1];
$ret["root_guid"] = preg_replace("=https?://(.*)/posts/(.*)=ism", "$2", $link);
if (($ret["root_guid"] == $link) OR ($ret["root_guid"] == ""))
return(false);
return($ret);
}
function send_status($item, $owner, $contact, $public_batch = false) {
$myaddr = self::get_my_handle($owner);
$theiraddr = $contact["addr"];
$title = $item["title"];
$body = $item["body"];
// convert to markdown
$body = html_entity_decode(bb2diaspora($body));
// Adding the title
if(strlen($title))
$body = "## ".html_entity_decode($title)."\n\n".$body;
if ($item["attach"]) {
$cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item["attach"], $matches, PREG_SET_ORDER);
if(cnt) {
$body .= "\n".t("Attachments:")."\n";
foreach($matches as $mtch)
$body .= "[".$mtch[3]."](".$mtch[1].")\n";
}
}
$public = (($item["private"]) ? "false" : "true");
$created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d H:i:s \U\T\C');
// Detect a share element and do a reshare
if (!$item['private'] AND ($ret = self::is_reshare($item["body"]))) {
$message = array("root_diaspora_id" => $ret["root_handle"],
"root_guid" => $ret["root_guid"],
"guid" => $item["guid"],
"diaspora_handle" => $myaddr,
"public" => $public,
"created_at" => $created,
"provider_display_name" => $item["app"]);
$data = array("XML" => array("post" => array("reshare" => $message)));
} else {
$location = array();
if ($item["location"] != "")
$location["address"] = $item["location"];
if ($item["coord"] != "") {
$coord = explode(" ", $item["coord"]);
$location["lat"] = $coord[0];
$location["lng"] = $coord[1];
}
$message = array("raw_message" => $body,
"location" => $location,
"guid" => $item["guid"],
"diaspora_handle" => $myaddr,
"public" => $public,
"created_at" => $created,
"provider_display_name" => $item["app"]);
if (count($location) == 0)
unset($message["location"]);
$data = array("XML" => array("post" => array("status_message" => $message)));
}
$msg = xml::from_array($data, $xml);
logger("status: ".$owner["username"]." -> ".$contact["name"]." base message: ".$msg, LOGGER_DATA);
logger("send guid ".$item["guid"], LOGGER_DEBUG);
$slap = self::build_message($msg, $owner, $contact, $owner["uprvkey"], $contact["pubkey"], $public_batch);
$return_code = self::transmit($owner,$contact,$slap, false);
logger("guid: ".$item["guid"]." result ".$return_code, LOGGER_DEBUG);
return $return_code;
}
function send_mail($item,$owner,$contact) {
$myaddr = self::get_my_handle($owner);
$r = q("SELECT * FROM `conv` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($item["convid"]),
intval($item["uid"])
);
if (!count($r)) {
logger("conversation not found.");
return;
}
$cnv = $r[0];
$conv = array(
"guid" => $cnv["guid"],
"subject" => $cnv["subject"],
"created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d H:i:s \U\T\C'),
"diaspora_handle" => $cnv["creator"],
"participant_handles" => $cnv["recips"]
);
$body = bb2diaspora($item["body"]);
$created = datetime_convert("UTC", "UTC", $item["created"], 'Y-m-d H:i:s \U\T\C');
$signed_text = $item["guid"].";".$cnv["guid"].";".$body.";".$created.";".$myaddr.";".$cnv['guid'];
$sig = base64_encode(rsa_sign($signed_text, $owner["uprvkey"], "sha256"));
$msg = array(
"guid" => $item["guid"],
"parent_guid" => $cnv["guid"],
"parent_author_signature" => $sig,
"author_signature" => $sig,
"text" => $body,
"created_at" => $created,
"diaspora_handle" => $myaddr,
"conversation_guid" => $cnv["guid"]
);
if ($item["reply"])
$data = array("XML" => array("post" => array("message" => $msg)));
else {
$message = array("guid" => $cnv["guid"],
"subject" => $cnv["subject"],
"created_at" => datetime_convert("UTC", "UTC", $cnv['created'], 'Y-m-d H:i:s \U\T\C'),
"message" => $msg,
"diaspora_handle" => $cnv["creator"],
"participant_handles" => $cnv["recips"]);
$data = array("XML" => array("post" => array("conversation" => $message)));
}
$xmsg = xml::from_array($data, $xml);
logger("conversation: ".print_r($xmsg,true), LOGGER_DATA);
logger("send guid ".$item["guid"], LOGGER_DEBUG);
$slap = self::build_message($xmsg, $owner, $contact, $owner["uprvkey"], $contact["pubkey"], false);
$return_code = self::transmit($owner, $contact, $slap, false, false, $item["guid"]);
logger("guid: ".$item["guid"]." result ".$return_code, LOGGER_DEBUG);
return $return_code;
}
}
?>

+ 39
- 0
include/xml.php View File

@ -0,0 +1,39 @@
<?php
/**
* @brief This class contain functions to work with XML data
*
*/
class xml {
function from_array($array, &$xml) {
if (!is_object($xml)) {
foreach($array as $key => $value) {
$root = new SimpleXMLElement("<".$key."/>");
self::from_array($value, $root);
$dom = dom_import_simplexml($root)->ownerDocument;
$dom->formatOutput = true;
$xml = $dom;
return $dom->saveXML();
}
}
foreach($array as $key => $value) {
if (!is_array($value) AND !is_numeric($key))
$xml->addChild($key, $value);
elseif (is_array($value))
self::from_array($value, $xml->addChild($key));
}
}
function copy(&$source, &$target, $elementname) {
if (count($source->children()) == 0)
$target->addChild($elementname, $source);
else {
$child = $target->addChild($elementname);
foreach ($source->children() AS $childfield => $childentry)
self::copy($childentry, $child, $childfield);
}
}
}
?>

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