formatting

.gitignore

@@ -0,0 +1 @@
+config.json

config.json

@@ -1,46 +0,0 @@
-{
-  "target_extensions": ["334", "338", "227", "228"],
-  "list_filter_type": "blacklist",
-  "extension_filter_list": [
-    "209",
-    "214",
-    "220",
-    "234",
-    "254",
-    "333",
-    "344",
-    "348",
-    "355",
-    "365",
-    "370",
-    "371",
-    "372",
-    "373",
-    "374",
-    "375",
-    "377",
-    "378",
-    "379",
-    "383",
-    "384",
-    "390",
-    "391",
-    "393",
-    "397",
-    "398",
-    "529"
-  ],
-  "blacklisted_terms": ["vesibule", "inpatient"],
-
-  "prepend_extensions": [
-    {"name": "Night Hours", "extension": "*271"},
-    {"name": "Overhead Page", "extension": "900"},
-    {"name": "All page", "extension": "300"},
-    {"name": "Park 71", "extension": "71"},
-    {"name": "Park 72", "extension": "72"},
-    {"name": "OR", "extension": "356"},
-    {"name": "Lab", "extension": "340"},
-    {"name": "Business", "extension": "249"},
-    {"name": "OP Nurse", "extension": "336"}
-  ]
-}

directory.php

@@ -1,5 +1,6 @@
 #!/usr/bin/php -q
 <?php
+
 /**
  * Generate Polycom-compatible global directory XML (000000000000-directory.xml)
  * from PBXact/FreePBX extensions.
@@ -14,11 +15,11 @@
  */
 
 $bootstrap_settings['freepbx_auth'] = false;
-require_once('/etc/freepbx.conf');
+require_once '/etc/freepbx.conf';
 
-$provision_dir = '/tftpboot';                                // <-- adjust if needed
-$out_file      = $provision_dir . '/000000000000-directory.xml';
-$do_notify     = in_array('--notify', $argv, true);
+$provision_dir = '/tftpboot'; // <-- adjust if needed
+$out_file = $provision_dir . '/000000000000-directory.xml';
+$do_notify = in_array('--notify', $argv, true);
 
 $db = FreePBX::Database();
 $rows = [];
@@ -39,17 +40,18 @@ try {
 
 /** Fall back to PJSIP ps_endpoints (id is ext; parse callerid "Name <1001>") */
 if (!$rows) {
-    $stmt = $db->prepare("
+    $stmt = $db->prepare('
         SELECT id AS extension, callerid
         FROM ps_endpoints
         ORDER BY CAST(id AS UNSIGNED)
-    ");
+    ');
     $stmt->execute();
     $tmp = $stmt->fetchAll(PDO::FETCH_ASSOC);
     foreach ($tmp as $r) {
-        $ext = trim((string)$r['extension']);
-        if (!preg_match('/^[0-9]+$/', $ext)) continue;  // only numeric extensions
-        $cid = trim((string)($r['callerid'] ?? ''));
+        $ext = trim((string) $r['extension']);
+        if (!preg_match('/^[0-9]+$/', $ext))
+            continue; // only numeric extensions
+        $cid = trim((string) ($r['callerid'] ?? ''));
         // Try to parse descriptive name from callerid
         $name = 'Ext ' . $ext;
         if ($cid !== '') {
@@ -79,9 +81,10 @@ $root = $xml->createElement('directory');
 $xml->appendChild($root);
 
 foreach ($rows as $r) {
-    $name = trim((string)($r['name'] ?? ''));
-    $ext  = trim((string)($r['extension'] ?? ''));
-    if ($ext === '') continue;
+    $name = trim((string) ($r['name'] ?? ''));
+    $ext = trim((string) ($r['extension'] ?? ''));
+    if ($ext === '')
+        continue;
 
     // Split name into fn/ln if possible
     $fn = $name;
@@ -128,7 +131,23 @@ if ($do_notify) {
     $asteriskBin = '/usr/sbin/asterisk';
 
     $excludedEndpoints = [
-        '101', '102', '103', '104', '105', '106', '107', '108', '109', '110', '111', '112', '113', '114', '900', 'Voyant', '<Endpoint dpma_endpoint'
+        '101',
+        '102',
+        '103',
+        '104',
+        '105',
+        '106',
+        '107',
+        '108',
+        '109',
+        '110',
+        '111',
+        '112',
+        '113',
+        '114',
+        '900',
+        'Voyant',
+        '<Endpoint dpma_endpoint',
     ];
 
     // Get all endpoints from Asterisk CLI
@@ -158,7 +177,7 @@ if ($do_notify) {
         $notifyCmd = sprintf(
             '%s -rx "pjsip send notify polycom-check-cfg endpoint %s"',
             escapeshellarg($asteriskBin),
-            escapeshellarg($ep)
+            escapeshellarg($ep),
         );
         exec($notifyCmd);
     }

example-config.json

@@ -0,0 +1,16 @@
+{
+  "target_extensions": ["101", "202", "303"],
+  "list_filter_type": "blacklist",
+  "extension_filter_list": [
+    "111",
+    "222",
+    "333"
+  ],
+  "blacklisted_terms": ["accounting", "inpatient"],
+  "prepend_extensions": [
+    {"name": "Park 300", "extension": "300"},
+    {"name": "Park 301", "extension": "300"},
+    {"name": "Lab", "extension": "340"},
+    {"name": "Business", "extension": "249"}
+  ]
+}

gen_pc_sidecar.php

@@ -1,340 +0,0 @@
-#!/usr/bin/php -q
-<?php
-
-$PROVISION_DIR = '/tftpboot';
-
-$bootstrap_settings['freepbx_auth'] = false;
-require_once('/etc/freepbx.conf');
-
-$DB = FreePBX::Database();
-
-$CONFIG_PATH = "./config.json";
-$CONFIG = read_config_json_file($CONFIG_PATH);
-
-$TARGET_EXTENSIONS = read_config_json("target_extensions");
-$LIST_FILTER_TYPE = read_config_json_string("list_filter_type");
-$EXTENSION_FILTER_LIST = read_config_json("extension_filter_list");
-$BLACKLISTED_TERMS = read_config_json("blacklisted_terms");
-$PREPEND_EXTENSIONS = read_config_json_object_list("prepend_extensions");
-
-function main(): void {
-  global $TARGET_EXTENSIONS;
-  global $PROVISION_DIR;
-
-  $argv = $_SERVER['argv'] ?? [];
-  $do_notify = in_array('--notify', $argv, true);
-
-  $pbdb = pull_db();
-
-  blacklist_terms($pbdb);
-  filter_extensions($pbdb);
-  prepend_contact_list($pbdb);
-
-
-  $mac_list = pull_mac_list();
-
-  foreach ($TARGET_EXTENSIONS as $ext) {
-    $mac = strtolower($mac_list[$ext]) ?? null;
-
-    if (!$mac) { echo "Mac for $ext not found\n"; continue; }
-
-    $file = $PROVISION_DIR . '/' . $mac . '-features.cfg';
-
-    $xml = pull_xml_file($file);
-    $attendants = remove_attendants($xml);
-    write_attendants($attendants, $pbdb);
-    write_to_file($file, $xml);
-  }
-
-  if ($do_notify) {
-    notify($pbdb);
-  }
-}
-
-function pull_db(): array {
-  global $DB;
-  $pbdb = [];
-
-  try {
-      $stmt = $DB->prepare("
-          SELECT name, extension
-          FROM users
-          WHERE extension REGEXP '^[0-9]+$'
-          ORDER BY CAST(extension AS UNSIGNED)
-      ");
-      $stmt->execute();
-      $pbdb = $stmt->fetchAll(PDO::FETCH_ASSOC);
-  } catch (Exception $e) {
-  }
-
-  if (!$pbdb) {
-      fwrite(STDERR, "No extensions found (users/ps_endpoints returned no pbdb).\n");
-      exit(1);
-  }
-
-  usort($pbdb, function ($a, $b) {
-      return strcasecmp($a['name'], $b['name']);
-  });
-    return $pbdb;
-  }
-
-function filter_extensions(array &$pbdb) {
-  global $LIST_FILTER_TYPE;
-
-  if ($LIST_FILTER_TYPE == "whitelist") {
-    whitelist_extension_filter($pbdb);
-  } elseif ($LIST_FILTER_TYPE == "blacklist") {
-    blacklist_extension_filter($pbdb);
-  } else {
-    fwrite(STDERR, "Filter type invalid: $LIST_FILTER_TYPE");
-    fwrite(STDERR, "Use either whitelist or blacklist");
-  }
-}
-
-function blacklist_terms(array &$pbdb) {
-  global $BLACKLISTED_TERMS;
-  
-  $pbdb = array_values(array_filter($pbdb, function ($item) use ($BLACKLISTED_TERMS) {
-      if (!is_array($item) || !isset($item['name'])) {
-          return true;
-      }
-
-      $name = ltrim($item['name']);
-
-      foreach ($BLACKLISTED_TERMS as $term) {
-          if (stripos($name, $term) === 0) {
-              return false;
-          }
-      }
-      return true;
-  }));
-}
-
-function whitelist_extension_filter(array &$pbdb) {
-  global $EXTENSION_FILTER_LIST;
-   
-  $allowed = array_fill_keys(
-      array_map('trim', array_map('strval', $EXTENSION_FILTER_LIST)),
-      true
-  );
-
-  $pbdb = array_values(array_filter($pbdb, function ($item) use ($allowed) {
-      if (!is_array($item) || !isset($item['extension'])) {
-          return false;
-      }
-
-      $ext = trim((string)$item['extension']);
-      return isset($allowed[$ext]);
-  }));
-}
-
-function blacklist_extension_filter(array &$pbdb) {
-  global $EXTENSION_FILTER_LIST;
-
-  $blocked = array_fill_keys(
-      array_map('trim', array_map('strval', $EXTENSION_FILTER_LIST)),
-      true
-  );
-
-  $pbdb = array_values(array_filter($pbdb, function ($item) use ($blocked) {
-      if (!is_array($item) || !isset($item['extension'])) {
-          return true;
-      }
-
-      $ext = trim((string)$item['extension']);
-      return !isset($blocked[$ext]);
-  }));
-}
-
-function prepend_contact_list(array &$pbdb) {
-  global $PREPEND_EXTENSIONS;
-  array_unshift($pbdb, ...$PREPEND_EXTENSIONS);
-}
-
-function pull_mac_list(): array {
-  global $DB;
-  $mac_db = [];
-
-  try {
-      $stmt = $DB->prepare("
-          SELECT mac, SUBSTRING_INDEX(ext, '-', 1) AS ext
-          FROM endpoint_extensions
-          ORDER BY CAST(ext AS UNSIGNED)
-      ");
-      $stmt->execute();
-      $mac_db = $stmt->fetchAll(PDO::FETCH_ASSOC);
-  } catch (Exception $e) {
-    echo $e;
-  }
-  return array_column($mac_db, 'mac', 'ext');
-}
-
-
-function read_config_json_file(string $path): array {
-    $json = file_get_contents($path);
-    $data = json_decode($json, true);
-
-    if ($data === null && json_last_error() !== JSON_ERROR_NONE) {
-        throw new RuntimeException("JSON decode error: " . json_last_error_msg());
-    }
-    return $data;
-}
-
-function read_config_json(string $key): array {
-    global $CONFIG;
-    $value = $CONFIG[$key] ?? [];
-
-    if (is_string($value)) {
-        $items = preg_split('/\s*,\s*/', $value, -1, PREG_SPLIT_NO_EMPTY);
-    } elseif (is_array($value)) {
-        $items = $value;
-    } else {
-        $items = [];
-    }
-
-    $items = array_values(array_filter($items, fn($v) => is_scalar($v)));
-
-    $items = array_map(
-        fn($v) => strtolower(trim((string)$v)),
-        $items
-    );
-
-    return array_values(array_filter($items, fn($v) => $v !== ''));
-}
-
-function read_config_json_string(string $key): string {
-    global $CONFIG;
-    $value = $CONFIG[$key] ?? '';
-    return strtolower(trim((string)$value));
-}
-
-function read_config_json_object_list(string $key): array {
-    global $CONFIG;
-    $value = $CONFIG[$key] ?? [];
-
-    if (!is_array($value)) return [];
-
-    $out = [];
-    foreach ($value as $row) {
-        if (is_array($row) && isset($row['name'], $row['extension'])) {
-            $out[] = [
-                'name' => (string)$row['name'],
-                'extension' => (string)$row['extension'],
-            ];
-        }
-    }
-    return $out;
-}
-
-function pull_xml_file(string $file): DOMDocument {
-  if (!file_exists($file)) {
-    $file = '/tftpboot/000000000000-features.cfg';
-  }
-  $xmlString = file_get_contents($file);
-  if ($xmlString === false) {
-      throw new RuntimeException("Unable to read file: {$file}");
-  }
-
-  $xmlString = preg_replace('/^\xEF\xBB\xBF/', '', $xmlString); // BOM
-  $xmlString = ltrim($xmlString);
-
-  $firstAngle = strpos($xmlString, '<');
-  if ($firstAngle !== false && $firstAngle > 0) {
-      $xmlString = substr($xmlString, $firstAngle);
-  }
-
-  $xml = new DOMDocument('1.0', 'UTF-8');
-  $xml->preserveWhiteSpace = true;
-  $xml->formatOutput = true;
-  $xml->xmlStandalone = true;
-
-  if (!$xml->loadXML($xmlString)) {
-      $errs = libxml_get_errors();
-      libxml_clear_errors();
-      $msg = "Failed to parse XML.\n";
-      foreach ($errs as $e) {
-          $msg .= "[level {$e->level}] {$e->message} at line {$e->line}\n";
-      }
-      throw new RuntimeException($msg);
-  }
-
-  return $xml;
-}
-
-function remove_attendants(DOMDocument $xml): DOMElement {
-  $xpath = new DOMXPath($xml);
-  $attendantNodes = $xpath->query('/polycomConfig/attendant');
-  if ($attendantNodes->length === 0) {
-      throw new RuntimeException("No <attendant> element found at /polycomConfig/attendant");
-  }
-  $attendant = $attendantNodes->item(0);
-
-  $toRemove = [];
-  foreach ($attendant->attributes as $attr) {
-      if (strpos($attr->nodeName, 'attendant.resourceList.') === 0) {
-          $toRemove[] = $attr->nodeName;
-      }
-  }
-  foreach ($toRemove as $name) {
-      $attendant->removeAttribute($name);
-  }
-
-  return $attendant;
-}
-
-function write_attendants(DOMElement $attendant, array $pbdb): void {
-  $index =  1;
-  foreach ($pbdb as $r) {
-      $label = trim((string)($r['name'] ?? ''));
-      $address = trim((string)($r['extension'] ?? ''));
-      $type = trim((string)("normal"));
-
-      $attendant->setAttribute("attendant.resourceList.{$index}.address", $address);
-      $attendant->setAttribute("attendant.resourceList.{$index}.label", $label);
-      $attendant->setAttribute("attendant.resourceList.{$index}.type", $type);
-
-      $index++;
-  }
-}
-
-function write_to_file(string $file, DOMDocument $xml): void {
-  global $PROVISION_DIR;
-  if (!is_dir($PROVISION_DIR)) {
-      fwrite(STDERR, "Provisioning directory not found: $PROVISION_DIR\n");
-      exit(2);
-  }
-
-  $tmpfile = $file . '.tmp';
-  if ($xml->save($tmpfile) === false) {
-      fwrite(STDERR, "Failed to write temporary file $tmpfile\n");
-      exit(3);
-  }
-  if (!@rename($tmpfile, $file)) {
-      @unlink($tmpfile);
-      fwrite(STDERR, "Failed to move $tmpfile to $file (permissions?)\n");
-      exit(4);
-  }
-
-  if (!chown($file, 'asterisk')) {
-      error_log("chown failed for $file");
-  }
-  if (!chgrp($file, 'asterisk')) {
-      error_log("chgrp failed for $file");
-  }
-
-  echo "Wrote $file \n";
-}
-
-function notify(array $pbdb): void {
-    $notified = 0;
-    foreach ($pbdb as $r) {
-        $ext = trim((string)$r['extension']);
-        if ($ext === '') continue;
-        $cmd = "asterisk -rx \"pjsip send notify polycom-check-cfg endpoint " . escapeshellarg($ext) . "\"";
-        exec($cmd, $o, $rc);
-        if ($rc === 0) $notified++;
-    }
-    echo "Sent check-sync to $notified endpoints\n";
-}
-
-main();

readme.md

@@ -1,12 +1,16 @@
 ## Gen PC Sidecar Script
 The files are stored typically inside of `/var/lib/asterisk/PC-Contact-Sync` and the scripts should be run every 6 hours by a cron job.
 
+Make sure that all files are owned by asterisk user including the output files and the cronjob.
+
 <br>
 
 ## Quickstart
 #### Config Fields
 `config.json` has several fields. The config file needs to  be next to the script in order to be read.
 
+See the example [config.json](./config.json) included.
+
 <br>
 <div style="border-left: 6px solid #FFA500; padding: 10px;">
 <strong>⚠️ Warning:</strong> Make sure the config follows proper json syntax.
@@ -31,13 +35,20 @@ prepend_extensions
 <br>
 
 #### Cronjob Example
+Create the cronjob as asterisk user.
+
+```
+EDITOR=vim crontab -e -u asterisk
+```
+
+Append this to the crontab
 
 ```
 # Run Polycom directory sync every 4 hours at :00
-0 */4 * * * /usr/bin/php /var/lib/asterisk/PC-Contact-Sync/gen_polycom_directory.php --notify >> /var/log/gen_polycom_directory.log 2>&1
+0 */4 * * * /usr/bin/php /var/lib/asterisk/PC-Contact-Sync/directory.php --notify >> /var/log/directory.log 2>&1
 
 # Run PC sidecar sync every 4 hours at :05 (5 mins after)
-10 */4 * * * /usr/bin/php /var/lib/asterisk/PC-Contact-Sync/gen_pc_sidecar.php >> /var/log/gen_pc_sidecar.log 2>&1
+5 */4 * * * /usr/bin/php /var/lib/asterisk/PC-Contact-Sync/sidecar.php >> /var/log/sidecar.log 2>&1
 ```
 <br>
 

sidecar.php

@@ -0,0 +1,352 @@
+#!/usr/bin/php -q
+<?php
+
+$PROVISION_DIR = '/tftpboot';
+
+$bootstrap_settings['freepbx_auth'] = false;
+require_once '/etc/freepbx.conf';
+
+$DB = FreePBX::Database();
+
+$CONFIG_PATH = './config.json';
+$CONFIG = read_config_json_file($CONFIG_PATH);
+
+$TARGET_EXTENSIONS = read_config_json('target_extensions');
+$LIST_FILTER_TYPE = read_config_json_string('list_filter_type');
+$EXTENSION_FILTER_LIST = read_config_json('extension_filter_list');
+$BLACKLISTED_TERMS = read_config_json('blacklisted_terms');
+$PREPEND_EXTENSIONS = read_config_json_object_list('prepend_extensions');
+
+function main(): void
+{
+    global $TARGET_EXTENSIONS;
+    global $PROVISION_DIR;
+
+    $argv = $_SERVER['argv'] ?? [];
+    $do_notify = in_array('--notify', $argv, true);
+
+    $pbdb = pull_db();
+
+    blacklist_terms($pbdb);
+    filter_extensions($pbdb);
+    prepend_contact_list($pbdb);
+
+    $mac_list = pull_mac_list();
+
+    foreach ($TARGET_EXTENSIONS as $ext) {
+        $mac = strtolower($mac_list[$ext]) ?? null;
+
+        if (!$mac) {
+            echo "Mac for $ext not found\n";
+            continue;
+        }
+
+        $file = $PROVISION_DIR . '/' . $mac . '-features.cfg';
+
+        $xml = pull_xml_file($file);
+        $attendants = remove_attendants($xml);
+        write_attendants($attendants, $pbdb);
+        write_to_file($file, $xml);
+    }
+
+    if ($do_notify) {
+        notify($pbdb);
+    }
+}
+
+function pull_db(): array
+{
+    global $DB;
+    $pbdb = [];
+
+    try {
+        $stmt = $DB->prepare("
+          SELECT name, extension
+          FROM users
+          WHERE extension REGEXP '^[0-9]+$'
+          ORDER BY CAST(extension AS UNSIGNED)
+      ");
+        $stmt->execute();
+        $pbdb = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    } catch (Exception $e) {
+    }
+
+    if (!$pbdb) {
+        fwrite(STDERR, "No extensions found (users/ps_endpoints returned no pbdb).\n");
+        exit(1);
+    }
+
+    usort($pbdb, function ($a, $b) {
+        return strcasecmp($a['name'], $b['name']);
+    });
+    return $pbdb;
+}
+
+function filter_extensions(array &$pbdb)
+{
+    global $LIST_FILTER_TYPE;
+
+    if ($LIST_FILTER_TYPE == 'whitelist') {
+        whitelist_extension_filter($pbdb);
+    } elseif ($LIST_FILTER_TYPE == 'blacklist') {
+        blacklist_extension_filter($pbdb);
+    } else {
+        fwrite(STDERR, "Filter type invalid: $LIST_FILTER_TYPE");
+        fwrite(STDERR, 'Use either whitelist or blacklist');
+    }
+}
+
+function blacklist_terms(array &$pbdb)
+{
+    global $BLACKLISTED_TERMS;
+
+    $pbdb = array_values(array_filter($pbdb, function ($item) use ($BLACKLISTED_TERMS) {
+        if (!is_array($item) || !isset($item['name'])) {
+            return true;
+        }
+
+        $name = ltrim($item['name']);
+
+        foreach ($BLACKLISTED_TERMS as $term) {
+            if (stripos($name, $term) === 0) {
+                return false;
+            }
+        }
+        return true;
+    }));
+}
+
+function whitelist_extension_filter(array &$pbdb)
+{
+    global $EXTENSION_FILTER_LIST;
+
+    $allowed = array_fill_keys(array_map('trim', array_map('strval', $EXTENSION_FILTER_LIST)), true);
+
+    $pbdb = array_values(array_filter($pbdb, function ($item) use ($allowed) {
+        if (!is_array($item) || !isset($item['extension'])) {
+            return false;
+        }
+
+        $ext = trim((string) $item['extension']);
+        return isset($allowed[$ext]);
+    }));
+}
+
+function blacklist_extension_filter(array &$pbdb)
+{
+    global $EXTENSION_FILTER_LIST;
+
+    $blocked = array_fill_keys(array_map('trim', array_map('strval', $EXTENSION_FILTER_LIST)), true);
+
+    $pbdb = array_values(array_filter($pbdb, function ($item) use ($blocked) {
+        if (!is_array($item) || !isset($item['extension'])) {
+            return true;
+        }
+
+        $ext = trim((string) $item['extension']);
+        return !isset($blocked[$ext]);
+    }));
+}
+
+function prepend_contact_list(array &$pbdb)
+{
+    global $PREPEND_EXTENSIONS;
+    array_unshift($pbdb, ...$PREPEND_EXTENSIONS);
+}
+
+function pull_mac_list(): array
+{
+    global $DB;
+    $mac_db = [];
+
+    try {
+        $stmt = $DB->prepare("
+          SELECT mac, SUBSTRING_INDEX(ext, '-', 1) AS ext
+          FROM endpoint_extensions
+          ORDER BY CAST(ext AS UNSIGNED)
+      ");
+        $stmt->execute();
+        $mac_db = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    } catch (Exception $e) {
+        echo $e;
+    }
+    return array_column($mac_db, 'mac', 'ext');
+}
+
+function read_config_json_file(string $path): array
+{
+    $json = file_get_contents($path);
+    $data = json_decode($json, true);
+
+    if ($data === null && json_last_error() !== JSON_ERROR_NONE) {
+        throw new RuntimeException('JSON decode error: ' . json_last_error_msg());
+    }
+    return $data;
+}
+
+function read_config_json(string $key): array
+{
+    global $CONFIG;
+    $value = $CONFIG[$key] ?? [];
+
+    if (is_string($value)) {
+        $items = preg_split('/\s*,\s*/', $value, -1, PREG_SPLIT_NO_EMPTY);
+    } elseif (is_array($value)) {
+        $items = $value;
+    } else {
+        $items = [];
+    }
+
+    $items = array_values(array_filter($items, fn($v) => is_scalar($v)));
+
+    $items = array_map(fn($v) => strtolower(trim((string) $v)), $items);
+
+    return array_values(array_filter($items, fn($v) => $v !== ''));
+}
+
+function read_config_json_string(string $key): string
+{
+    global $CONFIG;
+    $value = $CONFIG[$key] ?? '';
+    return strtolower(trim((string) $value));
+}
+
+function read_config_json_object_list(string $key): array
+{
+    global $CONFIG;
+    $value = $CONFIG[$key] ?? [];
+
+    if (!is_array($value))
+        return [];
+
+    $out = [];
+    foreach ($value as $row) {
+        if (is_array($row) && isset($row['name'], $row['extension'])) {
+            $out[] = [
+                'name' => (string) $row['name'],
+                'extension' => (string) $row['extension'],
+            ];
+        }
+    }
+    return $out;
+}
+
+function pull_xml_file(string $file): DOMDocument
+{
+    if (!file_exists($file)) {
+        $file = '/tftpboot/000000000000-features.cfg';
+    }
+    $xmlString = file_get_contents($file);
+    if ($xmlString === false) {
+        throw new RuntimeException("Unable to read file: {$file}");
+    }
+
+    $xmlString = preg_replace('/^\xEF\xBB\xBF/', '', $xmlString); // BOM
+    $xmlString = ltrim($xmlString);
+
+    $firstAngle = strpos($xmlString, '<');
+    if ($firstAngle !== false && $firstAngle > 0) {
+        $xmlString = substr($xmlString, $firstAngle);
+    }
+
+    $xml = new DOMDocument('1.0', 'UTF-8');
+    $xml->preserveWhiteSpace = true;
+    $xml->formatOutput = true;
+    $xml->xmlStandalone = true;
+
+    if (!$xml->loadXML($xmlString)) {
+        $errs = libxml_get_errors();
+        libxml_clear_errors();
+        $msg = "Failed to parse XML.\n";
+        foreach ($errs as $e) {
+            $msg .= "[level {$e->level}] {$e->message} at line {$e->line}\n";
+        }
+        throw new RuntimeException($msg);
+    }
+
+    return $xml;
+}
+
+function remove_attendants(DOMDocument $xml): DOMElement
+{
+    $xpath = new DOMXPath($xml);
+    $attendantNodes = $xpath->query('/polycomConfig/attendant');
+    if ($attendantNodes->length === 0) {
+        throw new RuntimeException('No <attendant> element found at /polycomConfig/attendant');
+    }
+    $attendant = $attendantNodes->item(0);
+
+    $toRemove = [];
+    foreach ($attendant->attributes as $attr) {
+        if (strpos($attr->nodeName, 'attendant.resourceList.') === 0) {
+            $toRemove[] = $attr->nodeName;
+        }
+    }
+    foreach ($toRemove as $name) {
+        $attendant->removeAttribute($name);
+    }
+
+    return $attendant;
+}
+
+function write_attendants(DOMElement $attendant, array $pbdb): void
+{
+    $index = 1;
+    foreach ($pbdb as $r) {
+        $label = trim((string) ($r['name'] ?? ''));
+        $address = trim((string) ($r['extension'] ?? ''));
+        $type = trim((string) 'normal');
+
+        $attendant->setAttribute("attendant.resourceList.{$index}.address", $address);
+        $attendant->setAttribute("attendant.resourceList.{$index}.label", $label);
+        $attendant->setAttribute("attendant.resourceList.{$index}.type", $type);
+
+        $index++;
+    }
+}
+
+function write_to_file(string $file, DOMDocument $xml): void
+{
+    global $PROVISION_DIR;
+    if (!is_dir($PROVISION_DIR)) {
+        fwrite(STDERR, "Provisioning directory not found: $PROVISION_DIR\n");
+        exit(2);
+    }
+
+    $tmpfile = $file . '.tmp';
+    if ($xml->save($tmpfile) === false) {
+        fwrite(STDERR, "Failed to write temporary file $tmpfile\n");
+        exit(3);
+    }
+    if (!@rename($tmpfile, $file)) {
+        @unlink($tmpfile);
+        fwrite(STDERR, "Failed to move $tmpfile to $file (permissions?)\n");
+        exit(4);
+    }
+
+    if (!chown($file, 'asterisk')) {
+        error_log("chown failed for $file");
+    }
+    if (!chgrp($file, 'asterisk')) {
+        error_log("chgrp failed for $file");
+    }
+
+    echo "Wrote $file \n";
+}
+
+function notify(array $pbdb): void
+{
+    $notified = 0;
+    foreach ($pbdb as $r) {
+        $ext = trim((string) $r['extension']);
+        if ($ext === '')
+            continue;
+        $cmd = 'asterisk -rx "pjsip send notify polycom-check-cfg endpoint ' . escapeshellarg($ext) . '"';
+        exec($cmd, $o, $rc);
+        if ($rc === 0)
+            $notified++;
+    }
+    echo "Sent check-sync to $notified endpoints\n";
+}
+
+main();