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- Copied github.com/tm1000/tftpserver/tftpserver.php over to lib/tftpserver.php

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- Replaced logging functions with lib/logger.php
- First step for adding templated settings/file where placeholders can be filled out.
- Add 'settings' structure to config.ini
- Add 'settings' multidimensional config parser to lib/utils.php
- Added simple test implementation of tftpserver
- Renamed lib/tftpserver.php to lib/tftp.php
- Fixed error output from lib/tftp.php
- Note: current simple tftpserver.php test implementation stores/read files
- from memory (not fs). So you need to put a file, before you can get that
  file back.
- Cleanup some small config details
- First simple implementation of tftp_provisioner.php
This commit is contained in:
Diederik de Groot
2020-02-16 20:35:05 +01:00
parent a4ebaee776
commit 7aa4524b19
5 changed files with 1027 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
config.ini
View File

@@ -1,10 +1,19 @@
[main]
debug = on ; The output in the browser window for more information
debug = TRUE ; The output in the browser window for more information
cache_filename = "/tmp/provision_sccp_resolver.cache"
default_language = English_United_States
log_type = SYSLOG ; SYSLOG|STDERR|STDOUT|NULL|FILE
log_level = LOG_INFO ; LOG_EMERG|LOG_ALERT|LOG_CRIT|LOG_ERR|LOG_WARNING|LOG_NOTICE|LOG_INFO|LOG_DEBUG
;log_filename = provision.log ; only in case of log_type = FILE
auto_generate_settings = FALSE
auto_sign = FALSE
auto_encrypt = FALSE
[security]
cert_ca = NULL
cert_priv = NULL
cert_pub = NULL
hash = NULL
[subdirs]
tftproot = tftpboot
@@ -15,3 +24,32 @@ ringtones = ringtones
locales = locales
countries = countries
languages = languages
[settings]
sshUserId = cisco
sshPassword = cisco
ipAddress = ipv4|ipv6 ; ipv4 | ipv4 | ipv4|ipv6 | ipv6|ipv4
datetime.template = M/D/YA
datetime.timezone = W. Europe Standard/Daylight Time
datetime.ipaddress = 10.x.x.x
datetime.mode = Unicast
members.myhost.hostname = myhost.domain.com
members.myhost.ipv4 = 10.x.x.x
members.myhost.ipv6 = 2001:470::x:x
members.myhost.port = 2000
;srts.
;common.
;vendor.
locale.country = United_States
locale.language = English_United_States
locale.langcode = en_US
locale.charset = utf-8
urls.security = FALSE
urls.information = NULL
urls.authentication = NULL
urls.services = NULL
urls.direcory = NULL
urls.messages = NULL
urls.proxyserver = NULL
;vpn.
;phoneservices.

75
lib/config.php
View File

@@ -1,13 +1,15 @@
<?php
include_once("logger.php");
include_once("utils.php");
//$base_path = !empty($_SERVER['DOCUMENT_ROOT']) ? realpath($_SERVER['DOCUMENT_ROOT'] . "/.."): realpath(getcwd() . "/..");
$base_path = realpath(__DIR__ . DIRECTORY_SEPARATOR . "..");
$base_path = !empty($_SERVER['DOCUMENT_ROOT']) ? realpath($_SERVER['DOCUMENT_ROOT'] . "/../"): realpath(getcwd()."/../");
$base_config = Array(
'main' => Array(
'debug' => 1,
'debug' => true,
'default_language' => 'English_United_States',
'log_type' => "NULL",
'log_level' => LOG_EMERG
'log_level' => 'LOG_EMERG'
),
'subdirs' => Array(
'tftproot' => 'tftpboot',
@@ -17,22 +19,63 @@ $base_config = Array(
'ringtones' => 'ringtones',
'locales' => 'locales',
'countries' => 'countries',
'languages' => 'languages',
'languages' => 'languages'
),
'security' => Array(
'cert_ca' => NULL,
'cert_priv' => NULL,
'cert_pub' => NULL,
'hash' => NULL
),
'settings' => Array(
'sshUserId' => 'cisco',
'sshPassword' => 'cisco',
'ipAddress' => '0',
'datetime' => Array(
'template' => 'M/D/YA',
'timezone' => 'W. Europe Standard/Daylight Time',
'ipaddress' => '10.x.x.x',
'mode' => 'Unicast'
),
'members' => Array(
'myhost' => Array(
'hostname' => 'myhost.domain.com',
'ipv4' => '10.x.x.x',
'ipv6' => '2001:470::x:x',
'port' => '2000'
)
),
'locale' => Array(
'country' => 'United_States',
'language' => 'English_United_States',
'langcode' => 'en_US',
'charset' => 'utf-8'
),
'urls' => Array(
'security' => false,
'information' => NULL,
'authentication' => NULL,
'services' => NULL,
'direcory' => NULL,
'messages' => NULL,
'proxyserver' => NULL
)
)
);
$tree_base = Array(
'settings' => array('path' => 'tftproot', "strip" => TRUE),
'wallpapers' => array('path' => 'tftproot', "strip" => FALSE),
'ringtones' => array('path' => 'tftproot', "strip" => TRUE),
'locales' => array('path' => 'tftproot', "strip" => TRUE),
'firmware' => array('path' => 'tftproot', "strip" => TRUE),
'languages' => array('path' => 'locales', "strip" => FALSE),
'countries' => array('path' => 'locales', "strip" => FALSE),
'default_language' => array('path' => 'locales', "strip" => TRUE),
'settings' => array('path' => 'tftproot', "strip" => true),
'wallpapers' => array('path' => 'tftproot', "strip" => false),
'ringtones' => array('path' => 'tftproot', "strip" => true),
'locales' => array('path' => 'tftproot', "strip" => true),
'firmware' => array('path' => 'tftproot', "strip" => true),
'languages' => array('path' => 'locales', "strip" => false),
'countries' => array('path' => 'locales', "strip" => false),
'default_language' => array('path' => 'locales', "strip" => true),
);
# Merge config
$ini_array = parse_ini_file('../config.ini', TRUE, INI_SCANNER_TYPED);
//$ini_array = parse_ini_file("$base_path/config.ini", true, INI_SCANNER_TYPED);
$ini_array = parse_ini_file_multi("$base_path/config.ini", true, INI_SCANNER_TYPED);
if (!empty($ini_array)) {
$config = array_merge($base_config, $ini_array);
}
@@ -77,4 +120,10 @@ switch($config['main']['log_type']) {
# Fixup debug
$print_debug = (!empty($config['main']['debug'])) ? $config['main']['debug'] : 'off';
$print_debug = ($print_debug == 1) ? 'on' : $print_debug;
if(defined('STDIN') ) {
print_r($config);
//var_dump($config);
}
?>

782
lib/tftp.php Normal file
View File

@@ -0,0 +1,782 @@
<?php
/*
* PHP TFTP Server
*
* Copyright (c) 2011 <mattias.wadman@gmail.com>
*
* MIT License:
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*
* Extend TFTPServer class and then call loop method with UDP URL.
* Possible methods to override:
* exists($peer, $filename)
* Check if file exist, default always true.
* readable($peer, $filename)
* Check if file is readable, default always true.
* get($peer, $filename, $mode)
* Return content of file, default always false.
* Only called if both exists and readable returns true.
* writable($peer, $filename)
* Check if file is writable, default always false.
* put($peer, $filename, $mode, $content)
* Write content to file.
* Only falled if both exists and writable returns true.
*
* $peer is $ip:$port, source ip and port of client
* $filename is filename specified by client
* $mode is probably "octet" or "netascii"
* $content is file content
*
* The server support multiple concurrent read and writes, but the method calls
* are serialized, so make sure to return quickly.
*
* TODO:
* select must handle EINTR, how?
* multiple recv per select?
*
*/
// origin: https://github.com/tm1000/tftpserver
include_once("logger.php");
class TFTPOpcode
{
public static function name($v)
{
static $names = array(TFTPOpcode::RRQ => "RRQ",
TFTPOpcode::WRQ => "WRQ",
TFTPOpcode::DATA => "DATA",
TFTPOpcode::ACK => "ACK",
TFTPOpcode::ERROR => "ERROR",
TFTPOpcode::OACK => "OACK");
if(isset($names[$v]))
return $names[$v];
else
return "UNKNOWN";
}
const RRQ = 1; // read request
const WRQ = 2; // write request
const DATA = 3; // send data
const ACK = 4; // ack data
const ERROR = 5;
const OACK = 6; // option ack, instead of first ACK/DATA
}
class TFTPError
{
const NOT_DEFINED = 0; // see error message instead of error code
const FILE_NOT_FOUND = 1;
const ACCESS_VIOLATION = 2;
const DISK_FULL = 3;
const ILLEGAL_OPERATION = 4;
const UNKNOWN_TID = 5; // unknown transfer (id is ip:port pair)
const FILE_ALREADY_EXISTS = 6;
const NO_SUCH_USER = 7;
const OACK_FAILURE = 8;
}
class TFTPTransferState
{
const READY = 1;
const SENDING_WAIT_OACK = 2;
const SENDING = 3;
const RECEIVING = 4;
const TERMINATING = 5;
}
abstract class TFTPTransfer {
public $state;
public $peer;
public $retransmit_timeout;
public $block_size;
public $tsize;
protected $_server; // TFTPServer reference
function __construct($server, $peer, $extensions)
{
$this->state = TFTPTransferState::READY;
$this->peer = $peer;
$this->retransmit_timeout = $server->retransmit_timeout;
$this->block_size = $server->block_size;
$this->tsize = 0;
$this->_server = $server;
if(isset($extensions["timeout"])) {
$timeout = (int)$extensions["timeout"];
if($timeout > 0 && $timeout < 256)
$this->retransmit_timeout = $timeout;
}
if(isset($extensions["blksize"])) {
$blksize = (int)$extensions["blksize"];
if($blksize > 0 && $blksize <= $server->max_block_size)
$this->block_size = $blksize;
}
// tsize is only checked for in write transfers
}
protected function log_debug($message)
{
$this->_server->log_debug($this->peer, $message);
}
protected function log_info($message)
{
$this->_server->log_info($this->peer, $message);
}
protected function log_warning($message)
{
$this->_server->log_warning($this->peer, $message);
}
protected function log_error($message)
{
$this->_server->log_error($this->peer, $message);
}
protected function terminal_info($error, $message)
{
$this->log_info($message);
$this->state = TFTPTransferState::TERMINATING;
return TFTPServer::packet_error($error, $message);
}
protected function terminal_error($op, $error, $message)
{
$this->log_debug("$op: $message");
$this->state = TFTPTransferState::TERMINATING;
return TFTPServer::packet_error($error, $message);
}
protected function illegal_operation($op, $message = "Illegal operation")
{
return $this->terminal_error($op, TFTPError::ILLEGAL_OPERATION, $message);
}
public function rrq($filename, $mode)
{
return $this->illegal_operation("RRQ");
}
public function wrq($filename, $mode)
{
return $this->illegal_operation("WRQ");
}
public function data($block, $data)
{
return $this->illegal_operation("DATA");
}
public function ack($block)
{
return $this->illegal_operation("ACK");
}
public function error($error, $message)
{
$this->log_debug("ERROR: $error: $message");
$this->state = TFTPTransferState::TERMINATING;
}
protected function use_extensions() {
return
$this->retransmit_timeout != $this->_server->retransmit_timeout ||
$this->block_size != $this->_server->block_size ||
$this->tsize != 0;
}
protected function packet_oack() {
$options = array();
if($this->retransmit_timeout != $this->_server->retransmit_timeout)
$options["timeout"] = (string)$this->retransmit_timeout;
if($this->block_size != $this->_server->block_size)
$options["blksize"] = (string)$this->block_size;
if($this->tsize != 0)
$options["tsize"] = (string)$this->tsize;
return TFTPServer::packet_oack($options);
}
}
class TFTPReadTransfer extends TFTPTransfer {
private $_last_recv_ack;
private $_last_sent_data;
private $_buffer;
private $_block;
private $_last_block;
function __construct($server, $peer, $extensions)
{
parent::__construct($server, $peer, $extensions);
$this->_last_recv_ack = time();
$this->_last_sent_data = $this->_last_recv_ack;
$this->_buffer = false;
$this->_block = 1;
$this->_last_block = 1;
$this->log_debug("new read transfer");
}
private function current_block()
{
return substr($this->_buffer,
($this->_block - 1) * $this->block_size,
$this->block_size);
}
private function packet_data_current()
{
$this->_last_sent_data = time();
if($this->state == TFTPTransferState::SENDING_WAIT_OACK)
return $this->packet_oack();
else
return TFTPServer::packet_data($this->_block, $this->current_block());
}
public function rrq($filename, $mode)
{
$this->log_debug("RRQ: filename $filename in $mode mode");
if($this->state != TFTPTransferState::READY)
return $this->illegal_operation("RRQ", "Not in ready state");
if(!$this->_server->exists($this->peer, $filename))
return $this->terminal_info(TFTPError::FILE_NOT_FOUND,
"File $filename does not exist");
if(!$this->_server->readable($this->peer, $filename))
return $this->terminal_info(TFTPError::ACCESS_VIOLATION,
"File $filename is not readable");
$this->_buffer = $this->_server->get($this->peer, $filename, $mode);
if($this->_buffer === false)
return $this->terminal_info(TFTPError::FILE_NOT_FOUND,
"Failed to read $filename");
$this->log_info("Reading $filename (" .
strlen($this->_buffer) . " bytes)");
if($this->use_extensions())
$this->state = TFTPTransferState::SENDING_WAIT_OACK;
else
$this->state = TFTPTransferState::SENDING;
$this->_last_block = floor(strlen($this->_buffer) /
$this->block_size) + 1;
$this->log_debug("RRQ: send first block or OACK");
return $this->packet_data_current();
}
public function ack($block)
{
if($this->state == TFTPTransferState::SENDING_WAIT_OACK) {
if($block != 0) {
$this->log_debug("ACK: waiting OACK ACK got block $block");
return false;
}
$this->state = TFTPTransferState::SENDING;
$this->log_debug("ACK: got OACK ACK, send first block");
return $this->packet_data_current();
}
if($this->state != TFTPTransferState::SENDING)
return $this->illegal_operation("ACK", "Not in sending state");
$this->log_debug("ACK: block $block");
$this->_last_recv_ack = time();
if($block < $this->_block) {
$this->log_debug("ACK: duplicate block $block");
// just ignore it
return false;
}
if($block > $this->_last_block)
return $this->illegal_operation("ACK",
"Block $block outside " .
"range 1-{$this->_last_block}");
if($block == $this->_last_block) {
$this->log_debug("ACK: last block, done");
$this->state = TFTPTransferState::TERMINATING;
return false;
}
// move to next block
$this->_block = $block + 1;
$this->log_debug("ACK: sending block {$this->_block}");
return $this->packet_data_current();
}
public function retransmit($now)
{
if($now - $this->_last_recv_ack > $this->_server->timeout) {
$this->log_debug("retransmit: timeout");
$this->state = TFTPTransferState::TERMINATING;
return false;
}
if($now - $this->_last_sent_data > $this->retransmit_timeout) {
$this->log_debug("retransmit: resending block {$this->_block} or OACK");
return $this->packet_data_current();
}
return false;
}
}
class TFTPWriteTransfer extends TFTPTransfer {
private $_last_sent_ack;
private $_last_recv_data;
private $_buffer;
private $_buffer_size;
private $_next_block;
private $_filename;
private $_mode;
function __construct($server, $peer, $extensions)
{
parent::__construct($server, $peer, $extensions);
$this->_last_sent_ack = time();
$this->_last_recv_data = $this->_last_sent_ack;
$this->_buffer = array();
$this->_buffer_size = 0;
$this->_last_recv_block = 0;
$this->_filename = false;
$this->_mode = false;
if(isset($extensions["tsize"]))
$this->tsize = (int)$extensions["tsize"];
$this->log_debug("new write transfer");
}
private function packet_ack_current()
{
$this->_last_sent_ack = time();
if($this->_last_recv_block == 0 && $this->use_extensions())
return $this->packet_oack();
else
return TFTPServer::packet_ack($this->_last_recv_block);
}
public function wrq($filename, $mode)
{
$this->log_debug("WRQ: filename $filename in $mode mode");
if($this->state != TFTPTransferState::READY)
return $this->illegal_operation("WRQ", "Not in ready state");
if(!$this->_server->writable($this->peer, $filename))
return $this->terminal_info(TFTPError::ACCESS_VIOLATION,
"File $filename is not writable");
if($this->tsize != 0 && $this->tsize > $this->_server->max_put_size)
return $this->terminal_info(TFTPError::DISK_FULL,
"File too big, " .
$this->tsize . "(tsize) > " .
$this->_server->max_put_size);
$this->state = TFTPTransferState::RECEIVING;
$this->_filename = $filename;
$this->_mode = $mode;
$this->_last_sent_ack = time();
$this->log_debug("WRQ: ack request");
if($this->use_extensions())
return $this->packet_oack();
else
return TFTPServer::packet_ack(0);
}
public function data($block, $data)
{
if($this->state != TFTPTransferState::RECEIVING)
return $this->illegal_operation("DATA", "Not in receiving state");
$this->log_debug("DATA: block $block");
$this->last_recv_data = time();
if($block <= $this->_last_recv_block) {
$this->log_debug("DATA: duplicate block $block");
// just ignore it
return false;
}
if($block != $this->_last_recv_block + 1)
return $this->illegal_operation("DATA",
"Expected block " .
($this->_last_recv_block + 1) .
" got $block");
$this->_last_recv_block = $block;
$this->_last_recv_data = time();
array_push($this->_buffer, $data);
$this->_buffer_size += strlen($data);
if($this->_buffer_size > $this->_server->max_put_size)
return $this->terminal_info(TFTPError::DISK_FULL,
"File too big, " .
$this->_buffer_size . " > " .
$this->_server->max_put_size);
if(strlen($data) < $this->block_size) {
$this->log_debug("DATA: last, done");
$this->state = TFTPTransferState::TERMINATING;
$this->log_info("Writing {$this->_filename} " .
"({$this->_buffer_size} bytes)");
$this->_server->put($this->peer, $this->_filename, $this->_mode,
implode("", $this->_buffer));
return $this->packet_ack_current();
}
$this->log_debug("DATA: ack block $block");
return $this->packet_ack_current();
}
public function retransmit($now)
{
if($now - $this->_last_recv_data > $this->_server->timeout) {
$this->log_debug("retransmit: timeout");
$this->state = TFTPTransferState::TERMINATING;
return false;
}
if($now - $this->_last_sent_ack > $this->retransmit_timeout) {
$this->log_debug("retransmit: reack block {$this->_last_recv_block}");
return $this->packet_ack_current();
}
return false;
}
}
class TFTPServer {
public $block_size = 512;
public $max_block_size = 65464; // max block size from rfc2348
public $timeout = 10;
public $retransmit_timeout = 1;
public $max_put_size = 10485760; // 10 Mibi
private $_socket_url;
private $_socket;
private $_transfers = array();
private $_logger = NULL;
function __construct($socket_url, $logger = NULL)
{
$this->_socket_url = $socket_url;
$this->_logger = $logger;
}
public function exists($peer, $filename)
{
return true;
}
public function readable($peer, $filename)
{
return true;
}
public function get($peer, $filename, $mode)
{
return false;
}
public function writable($peer, $filename)
{
return false;
}
public function put($peer, $filename, $mode, $content)
{
}
public function logger_log($priority, $message) {
if($this->_logger === NULL)
return;
$this->_logger->log($priority, $message);
}
public function log_debug($peer, $message)
{
$this->logger_log(LOG_DEBUG, "$peer $message");
}
public function log_info($peer, $message)
{
$this->logger_log(LOG_INFO, "$peer $message");
}
public function log_warning($peer, $message)
{
$this->logger_log(LOG_WARNING, "$peer $message");
}
public function log_error($peer, $message)
{
$this->logger_log(LOG_ERR, "$peer $message");
}
public static function packet_ack($block)
{
return pack("nn", TFTPOpcode::ACK, $block);
}
public static function packet_data($block, $data)
{
return pack("nn", TFTPOpcode::DATA, $block) . $data;
}
public static function packet_error($code, $message = "")
{
return pack("nn", TFTPOpcode::ERROR, $code) . $message . "\0";
}
public static function packet_oack($options)
{
$data = "";
foreach($options as $key => $value)
$data .= "$key\0$value\0";
return pack("n", TFTPOpcode::OACK) . $data;
}
public static function escape_string($str)
{
$b = "";
$l = strlen($str);
for($i = 0; $i < $l; $i++) {
$c = $str[$i];
if(ctype_print($c))
$b .= $c;
else
$b .= sprintf("\\x%'02x", ord($c));
}
return $b;
}
public function loop(&$error = false, $user = null)
{
$this->_socket =
stream_socket_server($this->_socket_url, $errno, $errstr,
STREAM_SERVER_BIND);
if(!$this->_socket) {
if($error !== false)
$error = "$errno: $errstr";
return false;
}
if($user != null) {
posix_seteuid($user["uid"]);
posix_setegid($user["gid"]);
}
stream_set_blocking($this->_socket, false);
return $this->loop_ex();
}
private function loop_ex()
{
$now = $last = time();
while(true) {
$read = array($this->_socket);
//$r = stream_select($read, $write = null, $excpt = null, 1);
$write = null;
$except = null;
$r = stream_select($read, $write, $excpt, 1);
if($r === false) {
$this->log_error("server", "select returned false");
continue;
}
if(count($read) > 0) {
$packet = stream_socket_recvfrom($this->_socket,
65535, // max udp packet size
0, // no flags
$peer);
// ipv6 hack, convert to [host]:port format
if(strpos($peer, ".") === false) {
$portpos = strrpos($peer, ":");
$host = substr($peer, 0, $portpos);
$port = substr($peer, $portpos + 1);
$peer = "[$host]:$port";
}
$this->log_debug($peer, "request: " . strlen($packet). " bytes");
$this->log_debug($peer, "request: " .
TFTPServer::escape_string($packet));
$reply = $this->request($peer, $packet);
if($reply !== false) {
$this->log_debug($peer, "reply: " .
TFTPServer::escape_string($reply));
stream_socket_sendto($this->_socket, $reply, 0, $peer);
}
}
$now = time();
if($now != $last) {
$last = $now;
$this->retransmit($now);
}
}
}
private function retransmit($now)
{
foreach($this->_transfers as $peer => $transfer) {
$reply = $transfer->retransmit($now);
if($reply !== false) {
$this->log_debug($peer, "resend: " .
TFTPServer::escape_string($reply));
stream_socket_sendto($this->_socket, $reply, 0, $peer);
}
if($transfer->state == TFTPTransferState::TERMINATING)
unset($this->_transfers[$peer]);
}
}
private function request($peer, $packet)
{
if(strlen($packet) < 4) {
$this->log_debug($peer, "request: short packet");
return false;
}
$reply = false;
$transfer = false;
if(isset($this->_transfers[$peer])) {
$this->log_debug($peer, "request: existing transfer");
$transfer = $this->_transfers[$peer];
}
$fields = unpack("n", $packet);
$op = $fields[1];
$this->log_debug($peer, "request: opcode " .
TFTPOpcode::name($op) . " ($op)");
switch($op) {
case TFTPOpcode::WRQ:
case TFTPOpcode::RRQ:
$a = explode("\0", substr($packet, 2));
if(count($a) < 3 || $a[count($a) - 1] != "") {
$this->log_warning($peer, "request: malformed " .
TFTPOpcode::name($op));
return false;
}
$rawexts = array_slice($a, 2, -1);
// Cisco IP Phone 7941 (and possibly others) return an extra null
// at the end; a breach of RFC rfc2347. This is a workaround.
// If odd count strip last and continue if empty, else warn and ignore
if(count($rawexts) % 2 != 0) {
if(array_pop($rawexts)!="") {
$this->log_warning($peer, "request: malformed extension " .
"key/value pairs " . TFTPOpcode::name($op));
return false;
}
}
$extensions = array();
foreach(array_chunk($rawexts, 2) as $pair)
$extensions[strtolower($pair[0])] = $pair[1];
if($transfer === false) {
if($op == TFTPOpcode::RRQ)
$transfer = new TFTPReadTransfer($this, $peer, $extensions);
else
$transfer = new TFTPWriteTransfer($this, $peer, $extensions);
$this->_transfers[$peer] = $transfer;
}
if($op == TFTPOpcode::RRQ)
$reply = $transfer->rrq($a[0], $a[1]);
else
$reply = $transfer->wrq($a[0], $a[1]);
break;
case TFTPOpcode::ACK:
if(strlen($packet) != 4) {
$this->log_warning($peer, "request: malformed ACK");
return false;
}
$a = unpack("n", substr($packet, 2));
if($transfer === false) {
// do not warn, some clients like BSD tftp sends ack on read error
$this->log_debug($peer, "request: ack from unknwon peer");
} else
$reply = $transfer->ack($a[1]);
break;
case TFTPOpcode::DATA:
if(strlen($packet) < 4) {
$this->log_warning($peer, "request: malformed DATA");
return false;
}
$a = unpack("n", substr($packet, 2));
$data = substr($packet, 4, strlen($packet) - 4);
if($transfer === false) {
$this->log_warning($peer, "request: data from unknwon peer");
$reply = TFTPServer::packet_error(TFTPError::UNKNOWN_TID,
"Unknown TID for DATA");
} else
$reply = $transfer->data($a[1], $data);
break;
case TFTPOpcode::ERROR:
$a = unpack("n", substr($packet, 2, 2));
$message = substr($packet, 4, strlen($packet) - 5);
if($transfer === false)
$this->log_warning($peer, "request: error from unknwon peer, " .
"{$a[1]}:$message");
else
$transfer->error($a[1], $message);
break;
default:
break;
}
if($transfer !== false &&
$transfer->state == TFTPTransferState::TERMINATING) {
$this->log_debug($peer, "request: terminating");
unset($this->_transfers[$transfer->peer]);
}
return $reply;
}
}
?>

43
lib/utils.php
View File

@@ -7,4 +7,47 @@ function utf8_urldecode($str) {
$str = preg_replace("/%u([0-9a-f]{3,4})/i","&#x\\1;",urldecode($str));
return html_entity_decode($str,null,'UTF-8');;
}
function parse_ini_file_multi($file, $process_sections = false, $scanner_mode = INI_SCANNER_NORMAL) {
$explode_str = '.';
$escape_char = "'";
// load ini file the normal way
$data = parse_ini_file($file, $process_sections, $scanner_mode);
if (!$process_sections) {
$data = array($data);
}
foreach ($data as $section_key => $section) {
// loop inside the section
foreach ($section as $key => $value) {
if (strpos($key, $explode_str)) {
if (substr($key, 0, 1) !== $escape_char) {
// key has a dot. Explode on it, then parse each subkeys
// and set value at the right place thanks to references
$sub_keys = explode($explode_str, $key);
$subs =& $data[$section_key];
foreach ($sub_keys as $sub_key) {
if (!isset($subs[$sub_key])) {
$subs[$sub_key] = [];
}
$subs =& $subs[$sub_key];
}
// set the value at the right place
$subs = $value;
// unset the dotted key, we don't need it anymore
unset($data[$section_key][$key]);
}
// we have escaped the key, so we keep dots as they are
else {
$new_key = trim($key, $escape_char);
$data[$section_key][$new_key] = $value;
unset($data[$section_key][$key]);
}
}
}
}
if (!$process_sections) {
$data = $data[0];
}
return $data;
}
?>

101
tftp_provisioner.php Executable file
View File

@@ -0,0 +1,101 @@
#!/usr/bin/env php
<?php
require_once("lib/tftp.php");
require_once("lib/config.php");
require_once("lib/resolver.php");
class TFTPProvisioner extends TFTPServer
{
private $_debug;
private $_resolver;
private $_filename;
function __construct($server_url, $config, $logger = NULL, $debug = false)
{
$this->_config = $config;
if (!$logger) {
$logger = new Logger_NULL('LOG_ERROR');
}
parent::__construct($server_url, $logger);
$this->_debug = $debug;
$this->max_put_size = 60000000;
$this->_resolver = new Resolver($config);
}
public function exists($peer, $req_filename)
{
if (($this->_filename = $this->_resolver->resolve($req_filename))) {
return file_exists($this->_filename);
}
return false;
}
public function readable($peer, $req_filename)
{
return is_readable($this->_filename);
}
public function get($peer, $req_filename, $mode)
{
return file_get_contents($this->_filename);
}
public function writable($peer, $req_filename)
{
// check $req_filename starts with 'settings/' (SPA phones can write to tftpboot)
$settings_path = $this->_config['main']['base_path'] . DIRECTORY_SEPARATOR
. $this->_config['subdirs']['settings']['path'] . DIRECTORY_SEPARATOR;
$filename = $settings_path . basename($req_filename);
if (is_writable($filename) || (!file_exists($filename) && is_writable($settings_path))) {
$this->_filename = $filename;
return true;
}
return false;
}
public function put($peer, $filename, $mode, $content)
{
return file_put_contents($this->_filename, $content);
}
/*
* STDOUT Log functions
*/
private function log($peer, $level, $message)
{
echo(date("H:i:s") . " $level $peer $message\n");
}
public function log_debug($peer, $message)
{
if($this->_debug)
$this->log($peer, "D", $message);
}
public function log_info($peer, $message)
{
$this->log($peer, "I", $message);
}
public function log_warning($peer, $message)
{
$this->log($peer, "W", $message);
}
public function log_error($peer, $message)
{
$this->log($peer, "E", $message);
}
}
$host = "127.0.0.1";
$port = 10069;
$url = "udp://$host:$port";
echo "\nStarting TFTP Provisioner...\n";
$server = new TFTPProvisioner($url, $config, $logger);
if(!$server->loop($error))
die("$error\n");
?>