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-rw-r--r--include/Scrape.php2
-rw-r--r--include/bb2diaspora.php70
-rw-r--r--include/bbcode.php5
-rwxr-xr-xinclude/diaspora.php97
-rw-r--r--include/lock.php76
5 files changed, 208 insertions, 42 deletions
diff --git a/include/Scrape.php b/include/Scrape.php
index 4f53effe9..b784650cd 100644
--- a/include/Scrape.php
+++ b/include/Scrape.php
@@ -432,7 +432,7 @@ function probe_url($url, $mode = PROBE_NORMAL) {
intval(local_user())
);
if(count($x) && count($r)) {
- $mailbox = construct_mailbox_name($r[0]);
+ $mailbox = construct_mailbox_name($r[0]);
$password = '';
openssl_private_decrypt(hex2bin($r[0]['pass']),$password,$x[0]['prvkey']);
$mbox = email_connect($mailbox,$r[0]['user'],$password);
diff --git a/include/bb2diaspora.php b/include/bb2diaspora.php
index c93b60d0d..75dadb84c 100644
--- a/include/bb2diaspora.php
+++ b/include/bb2diaspora.php
@@ -70,6 +70,12 @@ function stripdcode_br_cb($s) {
}
+//////////////////////
+// The following "diaspora_ul" and "diaspora_ol" are only appropriate for the
+// pre-Markdownify conversion. If Markdownify isn't used, use the non-Markdownify
+// versions below
+//////////////////////
+/*
function diaspora_ul($s) {
// Replace "[*]" followed by any number (including zero) of
// spaces by "* " to match Diaspora's list format
@@ -103,10 +109,38 @@ function diaspora_ol($s) {
else
return $s[0];
}
+*/
+
+//////////////////////
+// Non-Markdownify versions of "diaspora_ol" and "diaspora_ul"
+//////////////////////
+function diaspora_ul($s) {
+ // Replace "[\\*]" followed by any number (including zero) of
+ // spaces by "* " to match Diaspora's list format
+ return preg_replace("/\[\\\\\*\]( *)/", "* ", $s[1]);
+}
+
+function diaspora_ol($s) {
+ // A hack: Diaspora will create a properly-numbered ordered list even
+ // if you use '1.' for each element of the list, like:
+ // 1. First element
+ // 1. Second element
+ // 1. Third element
+ return preg_replace("/\[\\\\\*\]( *)/", "1. ", $s[1]);
+}
function bb2diaspora($Text,$preserve_nl = false) {
+//////////////////////
+// An attempt was made to convert bbcode to html and then to markdown
+// consisting of the following lines.
+// I'm undoing this as we have a lot of bbcode constructs which
+// were simply getting lost, for instance bookmark, vimeo, video, youtube, events, etc.
+// We can try this again, but need a very good test sequence to verify
+// all the major bbcode constructs that we use are getting through.
+//////////////////////
+/*
// bbcode() will convert "[*]" into "<li>" with no closing "</li>"
// Markdownify() is unable to handle these, as it makes each new
// "<li>" into a deeper nested element until it crashes. So pre-format
@@ -115,6 +149,7 @@ function bb2diaspora($Text,$preserve_nl = false) {
// Note that to get nested lists to work for Diaspora, we would need
// to define the closing tag for the list elements. So nested lists
// are going to be flattened out in Diaspora for now
+
$endlessloop = 0;
while ((((strpos($Text, "[/list]") !== false) && (strpos($Text, "[list") !== false)) ||
((strpos($Text, "[/ol]") !== false) && (strpos($Text, "[ol]") !== false)) ||
@@ -129,16 +164,7 @@ function bb2diaspora($Text,$preserve_nl = false) {
$Text = preg_replace_callback("/\[ol\](.*?)\[\/ol\]/is", 'diaspora_ol', $Text);
}
-
-
-//////////////////////
-// An attempt was made to convert bbcode to html and then to markdown
-// consisting of the following lines.
-// I'm undoing this as we have a lot of bbcode constructs which
-// were simply getting lost, for instance bookmark, vimeo, video, youtube, events, etc.
-// We can try this again, but need a very good test sequence to verify
-// all the major bbcode constructs that we use are getting through.
-//////////////////////
+*/
// Convert it to HTML - don't try oembed
// $Text = bbcode($Text, $preserve_nl, false);
@@ -244,15 +270,21 @@ function bb2diaspora($Text,$preserve_nl = false) {
$Text = preg_replace("(\[size=(.*?)\](.*?)\[\/size\])is","$2",$Text);
// Check for list text
- $Text = preg_replace_callback("/\[list\](.*?)\[\/list\]/is", 'diaspora_ul', $Text);
- $Text = preg_replace_callback("/\[ul\](.*?)\[\/ul\]/is", 'diaspora_ul', $Text);
- $Text = preg_replace_callback("/\[list=1\](.*?)\[\/list\]/is", 'diaspora_ol', $Text);
- $Text = preg_replace_callback("/\[list=i\](.*?)\[\/list\]/s",'diaspora_ol', $Text);
- $Text = preg_replace_callback("/\[list=I\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
- $Text = preg_replace_callback("/\[list=a\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
- $Text = preg_replace_callback("/\[list=A\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
- $Text = preg_replace_callback("/\[ol\](.*?)\[\/ol\]/is", 'diaspora_ol', $Text);
-// $Text = preg_replace("/\[li\](.*?)\[\/li\]/s", '<li>$1</li>' ,$Text);
+ $endlessloop = 0;
+ while ((((strpos($Text, "[/list]") !== false) && (strpos($Text, "[list") !== false)) ||
+ ((strpos($Text, "[/ol]") !== false) && (strpos($Text, "[ol]") !== false)) ||
+ ((strpos($Text, "[/ul]") !== false) && (strpos($Text, "[ul]") !== false)) ||
+ ((strpos($Text, "[/li]") !== false) && (strpos($Text, "[li]") !== false))) && (++$endlessloop < 20)) {
+ $Text = preg_replace_callback("/\[list\](.*?)\[\/list\]/is", 'diaspora_ul', $Text);
+ $Text = preg_replace_callback("/\[list=1\](.*?)\[\/list\]/is", 'diaspora_ol', $Text);
+ $Text = preg_replace_callback("/\[list=i\](.*?)\[\/list\]/s",'diaspora_ol', $Text);
+ $Text = preg_replace_callback("/\[list=I\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
+ $Text = preg_replace_callback("/\[list=a\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
+ $Text = preg_replace_callback("/\[list=A\](.*?)\[\/list\]/s", 'diaspora_ol', $Text);
+ $Text = preg_replace_callback("/\[ul\](.*?)\[\/ul\]/is", 'diaspora_ul', $Text);
+ $Text = preg_replace_callback("/\[ol\](.*?)\[\/ol\]/is", 'diaspora_ol', $Text);
+ $Text = preg_replace("/\[li\]( *)(.*?)\[\/li\]/s", '* $2' ,$Text);
+ }
// Just get rid of table tags since Diaspora doesn't support tables
$Text = preg_replace("/\[th\](.*?)\[\/th\]/s", '$1' ,$Text);
diff --git a/include/bbcode.php b/include/bbcode.php
index cb4a0bc6f..55a879497 100644
--- a/include/bbcode.php
+++ b/include/bbcode.php
@@ -166,14 +166,14 @@ function bbcode($Text,$preserve_nl = false, $tryoembed = true) {
// Check for list text
$Text = str_replace("[*]", "<li>", $Text);
- $Text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>' ,$Text);
// handle nested lists
$endlessloop = 0;
while ((((strpos($Text, "[/list]") !== false) && (strpos($Text, "[list") !== false)) ||
((strpos($Text, "[/ol]") !== false) && (strpos($Text, "[ol]") !== false)) ||
- ((strpos($Text, "[/ul]") !== false) && (strpos($Text, "[ul]") !== false))) && (++$endlessloop < 20)) {
+ ((strpos($Text, "[/ul]") !== false) && (strpos($Text, "[ul]") !== false)) ||
+ ((strpos($Text, "[/li]") !== false) && (strpos($Text, "[li]") !== false))) && (++$endlessloop < 20)) {
$Text = preg_replace("/\[list\](.*?)\[\/list\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>' ,$Text);
$Text = preg_replace("/\[list=\](.*?)\[\/list\]/ism", '<ul class="listnone" style="list-style-type: none;">$1</ul>' ,$Text);
$Text = preg_replace("/\[list=1\](.*?)\[\/list\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>' ,$Text);
@@ -183,6 +183,7 @@ function bbcode($Text,$preserve_nl = false, $tryoembed = true) {
$Text = preg_replace("/\[list=((?-i)A)\](.*?)\[\/list\]/ism", '<ul class="listupperalpha" style="list-style-type: upper-alpha;">$2</ul>' ,$Text);
$Text = preg_replace("/\[ul\](.*?)\[\/ul\]/ism", '<ul class="listbullet" style="list-style-type: circle;">$1</ul>' ,$Text);
$Text = preg_replace("/\[ol\](.*?)\[\/ol\]/ism", '<ul class="listdecimal" style="list-style-type: decimal;">$1</ul>' ,$Text);
+ $Text = preg_replace("/\[li\](.*?)\[\/li\]/ism", '<li>$1</li>' ,$Text);
}
$Text = preg_replace("/\[th\](.*?)\[\/th\]/sm", '<th>$1</th>' ,$Text);
diff --git a/include/diaspora.php b/include/diaspora.php
index 5ab0ee674..29846eedf 100755
--- a/include/diaspora.php
+++ b/include/diaspora.php
@@ -5,6 +5,7 @@ require_once('include/items.php');
require_once('include/bb2diaspora.php');
require_once('include/contact_selectors.php');
require_once('include/queue_fn.php');
+require_once('include/lock.php');
function diaspora_dispatch_public($msg) {
@@ -113,27 +114,83 @@ function diaspora_get_contact_by_handle($uid,$handle) {
}
function find_diaspora_person_by_handle($handle) {
+
+ $person = false;
$update = false;
- $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
- dbesc(NETWORK_DIASPORA),
- dbesc($handle)
- );
- if(count($r)) {
- logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG);
- // update record occasionally so it doesn't get stale
- $d = strtotime($r[0]['updated'] . ' +00:00');
- if($d > strtotime('now - 14 days'))
- return $r[0];
- $update = true;
- }
- logger('find_diaspora_person_by_handle: refresh',LOGGER_DEBUG);
- require_once('include/Scrape.php');
- $r = probe_url($handle, PROBE_DIASPORA);
- if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
- add_fcontact($r,$update);
- return ($r);
- }
- return false;
+ $got_lock = false;
+
+ do {
+ $r = q("select * from fcontact where network = '%s' and addr = '%s' limit 1",
+ dbesc(NETWORK_DIASPORA),
+ dbesc($handle)
+ );
+ if(count($r)) {
+ $person = $r[0];
+ logger('find_diaspora_person_by handle: in cache ' . print_r($r,true), LOGGER_DEBUG);
+
+ // update record occasionally so it doesn't get stale
+ $d = strtotime($person['updated'] . ' +00:00');
+ if($d < strtotime('now - 14 days'))
+ $update = true;
+ }
+
+
+ // FETCHING PERSON INFORMATION FROM REMOTE SERVER
+ //
+ // If the person isn't in our 'fcontact' table, or if he/she is but
+ // his/her information hasn't been updated for more than 14 days, then
+ // we want to fetch the person's information from the remote server.
+ //
+ // Note that $person isn't changed by this block of code unless the
+ // person's information has been successfully fetched from the remote
+ // server. So if $person was 'false' to begin with (because he/she wasn't
+ // in the local cache), it'll stay false, and if $person held the local
+ // cache information to begin with, it'll keep that information. That way
+ // if there's a problem with the remote fetch, we can at least use our
+ // cached information--it's better than nothing.
+
+ if((! $person) || ($update)) {
+ // Lock the function to prevent race conditions if multiple items
+ // come in at the same time from a person who doesn't exist in
+ // fcontact
+ $got_lock = lock_function('find_diaspora_person_by_handle', false);
+
+ if($got_lock) {
+ logger('find_diaspora_person_by_handle: create or refresh', LOGGER_DEBUG);
+ require_once('include/Scrape.php');
+ $r = probe_url($handle, PROBE_DIASPORA);
+
+ // Note that Friendica contacts can return a "Diaspora person"
+ // if Diaspora connectivity is enabled on their server
+ if((count($r)) && ($r['network'] === NETWORK_DIASPORA)) {
+ add_fcontact($r,$update);
+ $person = ($r);
+ }
+
+ unlock_function('find_diaspora_person_by_handle');
+ }
+ else {
+ logger('find_diaspora_person_by_handle: couldn\'t lock function', LOGGER_DEBUG);
+ if(! $person)
+ block_on_function_lock('find_diaspora_person_by_handle');
+ }
+ }
+ } while((! $person) && (! $got_lock));
+ // We need to try again if the person wasn't in 'fcontact' but the function was locked.
+ // The fact that the function was locked may mean that another process was creating the
+ // person's record. It could also mean another process was creating or updating an unrelated
+ // person.
+ //
+ // At any rate, we need to keep trying until we've either got the person or had a chance to
+ // try to fetch his/her remote information. But we don't want to block on locking the
+ // function, because if the other process is creating the record, then when we acquire the lock
+ // we'll dive right into creating another, duplicate record. We DO want to at least wait
+ // until the lock is released, so we don't flood the database with requests.
+ //
+ // If the person was in the 'fcontact' table, don't try again. It's not worth the time, since
+ // we do have some information for the person
+
+ return $person;
}
diff --git a/include/lock.php b/include/lock.php
new file mode 100644
index 000000000..9bdb71125
--- /dev/null
+++ b/include/lock.php
@@ -0,0 +1,76 @@
+<?php
+
+// Provide some ability to lock a PHP function so that multiple processes
+// can't run the function concurrently
+if(! function_exists('lock_function')) {
+function lock_function($fn_name, $block = true, $wait_sec = 2) {
+ if( $wait_sec == 0 )
+ $wait_sec = 2; // don't let the user pick a value that's likely to crash the system
+
+ $got_lock = false;
+
+ do {
+ q("LOCK TABLE locks WRITE");
+ $r = q("SELECT locked FROM locks WHERE name = '%s' LIMIT 1",
+ dbesc($fn_name)
+ );
+
+ if((count($r)) && (! $r[0]['locked'])) {
+ q("UPDATE locks SET locked = 1 WHERE name = '%s' LIMIT 1",
+ dbesc($fn_name)
+ );
+ $got_lock = true;
+ }
+ elseif(! $r) { // the Boolean value for count($r) should be equivalent to the Boolean value of $r
+ q("INSERT INTO locks ( name, locked ) VALUES ( '%s', 1 )",
+ dbesc($fn_name)
+ );
+ $got_lock = true;
+ }
+
+ q("UNLOCK TABLES");
+
+ if(($block) && (! $got_lock))
+ sleep($wait_sec);
+
+ } while(($block) && (! $got_lock));
+
+ logger('lock_function: function ' . $fn_name . ' with blocking = ' . $block . ' got_lock = ' . $got_lock, LOGGER_DEBUG);
+
+ return $got_lock;
+}}
+
+
+if(! function_exists('block_on_function_lock')) {
+function block_on_function_lock($fn_name, $wait_sec = 2) {
+ if( $wait_sec == 0 )
+ $wait_sec = 2; // don't let the user pick a value that's likely to crash the system
+
+ do {
+ $r = q("SELECT locked FROM locks WHERE name = '%s' LIMIT 1",
+ dbesc($fn_name)
+ );
+
+ if(count($r) && $r[0]['locked'])
+ sleep($wait_sec);
+
+ } while(count($r) && $r[0]['locked']);
+
+ return;
+}}
+
+
+if(! function_exists('unlock_function')) {
+function unlock_function($fn_name) {
+ //$r = q("LOCK TABLE lock WRITE");
+ $r = q("UPDATE locks SET locked = 0 WHERE name = '%s' LIMIT 1",
+ dbesc($fn_name)
+ );
+ //$r = q("UNLOCK TABLES");
+
+ logger('unlock_function: released lock for function ' . $fn_name, LOGGER_DEBUG);
+
+ return;
+}}
+
+?>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-01 07:27:12 +0000