Replace existing autoloader with Composer-supplied

- Move Friendica namespace to `src`
- Move required `ezyang/htmlpurifier` to vendor
- Remove existing static autoloader
- Change boot.php reference to the autoloader

vendor/ezyang/htmlpurifier/plugins/phorum/settings/form.php

@@ -0,0 +1,95 @@
+<?php
+
+function phorum_htmlpurifier_show_form()
+{
+    if (phorum_htmlpurifier_config_file_exists()) {
+        phorum_htmlpurifier_show_config_info();
+        return;
+    }
+
+    global $PHORUM;
+
+    $config = phorum_htmlpurifier_get_config();
+
+    $frm = new PhorumInputForm ("", "post", "Save");
+    $frm->hidden("module", "modsettings");
+    $frm->hidden("mod", "htmlpurifier"); // this is the directory name that the Settings file lives in
+
+    if (!empty($error)){
+        echo "$error<br />";
+    }
+
+    $frm->addbreak("Edit settings for the HTML Purifier module");
+
+    $frm->addMessage('<p>The box below sets <code>$PHORUM[\'mod_htmlpurifier\'][\'wysiwyg\']</code>.
+    When checked, contents sent for edit are now purified and the
+    informative message is disabled. If your WYSIWYG editor is disabled for
+    admin edits, you can safely keep this unchecked.</p>');
+    $frm->addRow('Use WYSIWYG?', $frm->checkbox('wysiwyg', '1', '', $PHORUM['mod_htmlpurifier']['wysiwyg']));
+
+    $frm->addMessage('<p>The box below sets <code>$PHORUM[\'mod_htmlpurifier\'][\'suppress_message\']</code>,
+    which removes the big how-to use
+    HTML Purifier message.</p>');
+    $frm->addRow('Suppress information?', $frm->checkbox('suppress_message', '1', '', $PHORUM['mod_htmlpurifier']['suppress_message']));
+
+    $frm->addMessage('<p>Click on directive links to read what each option does
+    (links do not open in new windows).</p>
+    <p>For more flexibility (for instance, you want to edit the full
+    range of configuration directives), you can create a <tt>config.php</tt>
+    file in your <tt>mods/htmlpurifier/</tt> directory. Doing so will,
+    however, make the web configuration interface unavailable.</p>');
+
+    require_once 'HTMLPurifier/Printer/ConfigForm.php';
+    $htmlpurifier_form = new HTMLPurifier_Printer_ConfigForm('config', 'http://htmlpurifier.org/live/configdoc/plain.html#%s');
+    $htmlpurifier_form->setTextareaDimensions(23, 7); // widen a little, since we have space
+
+    $frm->addMessage($htmlpurifier_form->render(
+        $config, $PHORUM['mod_htmlpurifier']['directives'], false));
+
+    $frm->addMessage("<strong>Warning: Changing HTML Purifier's configuration will invalidate
+      the cache. Expect to see a flurry of database activity after you change
+      any of these settings.</strong>");
+
+    $frm->addrow('Reset to defaults:', $frm->checkbox("reset", "1", "", false));
+
+    // hack to include extra styling
+    echo '<style type="text/css">' . $htmlpurifier_form->getCSS() . '
+    .hp-config {margin-left:auto;margin-right:auto;}
+    </style>';
+    $js = $htmlpurifier_form->getJavaScript();
+    echo '<script type="text/javascript">'."<!--\n$js\n//-->".'</script>';
+
+    $frm->show();
+}
+
+function phorum_htmlpurifier_show_config_info()
+{
+    global $PHORUM;
+
+    // update mod_htmlpurifier for housekeeping
+    phorum_htmlpurifier_commit_settings();
+
+    // politely tell user how to edit settings manually
+?>
+        <div class="input-form-td-break">How to edit settings for HTML Purifier module</div>
+        <p>
+          A <tt>config.php</tt> file exists in your <tt>mods/htmlpurifier/</tt>
+          directory. This file contains your custom configuration: in order to
+          change it, please navigate to that file and edit it accordingly.
+          You can also set <code>$GLOBALS['PHORUM']['mod_htmlpurifier']['wysiwyg']</code>
+          or <code>$GLOBALS['PHORUM']['mod_htmlpurifier']['suppress_message']</code>
+        </p>
+        <p>
+          To use the web interface, delete <tt>config.php</tt> (or rename it to
+          <tt>config.php.bak</tt>).
+        </p>
+        <p>
+          <strong>Warning: Changing HTML Purifier's configuration will invalidate
+          the cache. Expect to see a flurry of database activity after you change
+          any of these settings.</strong>
+        </p>
+<?php
+
+}
+
+// vim: et sw=4 sts=4

vendor/ezyang/htmlpurifier/plugins/phorum/settings/migrate-sigs-form.php

@@ -0,0 +1,22 @@
+<?php
+
+function phorum_htmlpurifier_show_migrate_sigs_form()
+{
+    $frm = new PhorumInputForm ('', "post", "Migrate");
+    $frm->hidden("module", "modsettings");
+    $frm->hidden("mod", "htmlpurifier");
+    $frm->hidden("migrate-sigs", "1");
+    $frm->addbreak("Migrate user signatures to HTML");
+    $frm->addMessage('This operation will migrate your users signatures
+        to HTML. <strong>This process is irreversible and must only be performed once.</strong>
+        Type in yes in the confirmation field to migrate.');
+    if (!file_exists(dirname(__FILE__) . '/../migrate.php')) {
+        $frm->addMessage('Migration file does not exist, cannot migrate signatures.
+            Please check <tt>migrate.bbcode.php</tt> on how to create an appropriate file.');
+    } else {
+        $frm->addrow('Confirm:', $frm->text_box("confirmation", ""));
+    }
+    $frm->show();
+}
+
+// vim: et sw=4 sts=4

vendor/ezyang/htmlpurifier/plugins/phorum/settings/migrate-sigs.php

@@ -0,0 +1,79 @@
+<?php
+
+function phorum_htmlpurifier_migrate_sigs_check()
+{
+    global $PHORUM;
+    $offset = 0;
+    if (!empty($_POST['migrate-sigs'])) {
+        if (!isset($_POST['confirmation']) || strtolower($_POST['confirmation']) !== 'yes') {
+            echo 'Invalid confirmation code.';
+            exit;
+        }
+        $PHORUM['mod_htmlpurifier']['migrate-sigs'] = true;
+        phorum_db_update_settings(array("mod_htmlpurifier"=>$PHORUM["mod_htmlpurifier"]));
+        $offset = 1;
+    } elseif (!empty($_GET['migrate-sigs']) && $PHORUM['mod_htmlpurifier']['migrate-sigs']) {
+        $offset = (int) $_GET['migrate-sigs'];
+    }
+    return $offset;
+}
+
+function phorum_htmlpurifier_migrate_sigs($offset)
+{
+    global $PHORUM;
+
+    if(!$offset) return; // bail out quick if $offset == 0
+
+    // theoretically, we could get rid of this multi-request
+    // doo-hickery if safe mode is off
+    @set_time_limit(0); // attempt to let this run
+    $increment = $PHORUM['mod_htmlpurifier']['migrate-sigs-increment'];
+
+    require_once(dirname(__FILE__) . '/../migrate.php');
+    // migrate signatures
+    // do this in batches so we don't run out of time/space
+    $end = $offset + $increment;
+    $user_ids = array();
+    for ($i = $offset; $i < $end; $i++) {
+        $user_ids[] = $i;
+    }
+    $userinfos = phorum_db_user_get_fields($user_ids, 'signature');
+    foreach ($userinfos as $i => $user) {
+        if (empty($user['signature'])) continue;
+        $sig = $user['signature'];
+        // perform standard Phorum processing on the sig
+        $sig = str_replace(array("&","<",">"), array("&amp;","&lt;","&gt;"), $sig);
+        $sig = preg_replace("/<((http|https|ftp):\/\/[a-z0-9;\/\?:@=\&\$\-_\.\+!*'\(\),~%]+?)>/i", "$1", $sig);
+        // prepare fake data to pass to migration function
+        $fake_data = array(array("author"=>"", "email"=>"", "subject"=>"", 'body' => $sig));
+        list($fake_message) = phorum_htmlpurifier_migrate($fake_data);
+        $user['signature'] = $fake_message['body'];
+        if (!phorum_api_user_save($user)) {
+            exit('Error while saving user data');
+        }
+    }
+    unset($userinfos); // free up memory
+
+    // query for highest ID in database
+    $type = $PHORUM['DBCONFIG']['type'];
+    $sql = "select MAX(user_id) from {$PHORUM['user_table']}";
+    $row = phorum_db_interact(DB_RETURN_ROW, $sql);
+    $top_id = (int) $row[0];
+
+    $offset += $increment;
+    if ($offset > $top_id) { // test for end condition
+        echo 'Migration finished';
+        $PHORUM['mod_htmlpurifier']['migrate-sigs'] = false;
+        phorum_htmlpurifier_commit_settings();
+        return true;
+    }
+    $host  = $_SERVER['HTTP_HOST'];
+    $uri   = rtrim(dirname($_SERVER['PHP_SELF']), '/\\');
+    $extra = 'admin.php?module=modsettings&mod=htmlpurifier&migrate-sigs=' . $offset;
+    // relies on output buffering to work
+    header("Location: http://$host$uri/$extra");
+    exit;
+
+}
+
+// vim: et sw=4 sts=4

vendor/ezyang/htmlpurifier/plugins/phorum/settings/save.php

@@ -0,0 +1,29 @@
+<?php
+
+function phorum_htmlpurifier_save_settings()
+{
+    global $PHORUM;
+    if (phorum_htmlpurifier_config_file_exists()) {
+        echo "Cannot update settings, <code>mods/htmlpurifier/config.php</code> already exists. To change
+        settings, edit that file. To use the web form, delete that file.<br />";
+    } else {
+        $config = phorum_htmlpurifier_get_config(true);
+        if (!isset($_POST['reset'])) $config->mergeArrayFromForm($_POST, 'config', $PHORUM['mod_htmlpurifier']['directives']);
+        $PHORUM['mod_htmlpurifier']['config'] = $config->getAll();
+    }
+    $PHORUM['mod_htmlpurifier']['wysiwyg'] = !empty($_POST['wysiwyg']);
+    $PHORUM['mod_htmlpurifier']['suppress_message'] = !empty($_POST['suppress_message']);
+    if(!phorum_htmlpurifier_commit_settings()){
+        $error="Database error while updating settings.";
+    } else {
+        echo "Settings Updated<br />";
+    }
+}
+
+function phorum_htmlpurifier_commit_settings()
+{
+    global $PHORUM;
+    return phorum_db_update_settings(array("mod_htmlpurifier"=>$PHORUM["mod_htmlpurifier"]));
+}
+
+// vim: et sw=4 sts=4