From 861260c111bff72f60665393660b6f5375559510 Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Tue, 24 Mar 2015 17:58:24 +0100
Subject: [PATCH] major refactoring under the hood

---
 LICENSE                              |   2 +-
 Makefile                             |   1 -
 bin/pharext                          | Bin 47490 -> 62765 bytes
 build/create-phar.php                |  57 ++----
 src/pharext/Cli/Command.php          |  67 ++++++-
 src/pharext/Command.php              |   9 +-
 src/pharext/Exception.php            |  17 ++
 src/pharext/ExecCmd.php              |  16 +-
 src/pharext/Installer.php            | 257 ++++++++-----------------
 src/pharext/Openssl/PrivateKey.php   |  12 +-
 src/pharext/Packager.php             | 273 ++++++++++-----------------
 src/pharext/SourceDir/Git.php        |   2 +-
 src/pharext/SourceDir/Pecl.php       |  16 +-
 src/pharext/SourceDir/Pharext.php    |   3 +-
 src/pharext/Task.php                 |  11 ++
 src/pharext/Task/Activate.php        |  94 +++++++++
 src/pharext/Task/Askpass.php         |  40 ++++
 src/pharext/Task/BundleGenerator.php |  28 +++
 src/pharext/Task/Configure.php       |  54 ++++++
 src/pharext/Task/Extract.php         |  41 ++++
 src/pharext/Task/GitClone.php        |  36 ++++
 src/pharext/Task/Make.php            |  65 +++++++
 src/pharext/Task/PeclFixup.php       |  48 +++++
 src/pharext/Task/PharBuild.php       |  82 ++++++++
 src/pharext/Task/PharCompress.php    |  66 +++++++
 src/pharext/Task/PharRename.php      |  54 ++++++
 src/pharext/Task/PharSign.php        |  48 +++++
 src/pharext/Task/Phpize.php          |  55 ++++++
 src/pharext/Task/StreamFetch.php     |  75 ++++++++
 src/pharext/Tempdir.php              |  17 +-
 src/pharext/Tempfile.php             |  42 +++--
 src/pharext/Tempname.php             |  29 +++
 src/pharext_install.tpl.php          |   2 +-
 33 files changed, 1178 insertions(+), 441 deletions(-)
 create mode 100644 src/pharext/Exception.php
 create mode 100644 src/pharext/Task.php
 create mode 100644 src/pharext/Task/Activate.php
 create mode 100644 src/pharext/Task/Askpass.php
 create mode 100644 src/pharext/Task/BundleGenerator.php
 create mode 100644 src/pharext/Task/Configure.php
 create mode 100644 src/pharext/Task/Extract.php
 create mode 100644 src/pharext/Task/GitClone.php
 create mode 100644 src/pharext/Task/Make.php
 create mode 100644 src/pharext/Task/PeclFixup.php
 create mode 100644 src/pharext/Task/PharBuild.php
 create mode 100644 src/pharext/Task/PharCompress.php
 create mode 100644 src/pharext/Task/PharRename.php
 create mode 100644 src/pharext/Task/PharSign.php
 create mode 100644 src/pharext/Task/Phpize.php
 create mode 100644 src/pharext/Task/StreamFetch.php
 create mode 100644 src/pharext/Tempname.php

diff --git a/LICENSE b/LICENSE
index 3f7d0f6..ab8ebb2 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2015, Michael Wallner <mike@iworks.at>.
+Copyright (c) 2015, Michael Wallner <mike@php.net>.
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without 
diff --git a/Makefile b/Makefile
index 9697343..433b800 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,6 @@ bin/pharext: src/* src/pharext/* src/pharext/*/*
 	@for file in $?; do php -l $$file | sed -ne '/^No syntax errors/!p' && exit $${PIPESTATUS[0]}; done
 	@echo "Creating bin/pharext ... "
 	php -d phar.readonly=0 build/create-phar.php
-	chmod +x $@
 
 test:
 	@echo "Running tests ... "
diff --git a/bin/pharext b/bin/pharext
index 8e385989c2d14bcf8cf95ab55ebd041a9b6a2db7..dbde37d8ae89529d271f2a087833d8c9252d2def 100755
GIT binary patch
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M-(7jTyKe9LU!IV<u>b%7

diff --git a/build/create-phar.php b/build/create-phar.php
index db9013f..4836ceb 100644
--- a/build/create-phar.php
+++ b/build/create-phar.php
@@ -4,47 +4,28 @@
  * Creates bin/pharext, invoked through the Makefile
  */
 
-$pkgname = __DIR__."/../bin/pharext";
-$tmpname = __DIR__."/pharext.phar";
+set_include_path(dirname(__DIR__)."/src");
+spl_autoload_register(function($c) {
+	return include strtr($c, "\\_", "//") . ".php";
+});
 
-if (file_exists($tmpname)) {
-	if (!unlink($tmpname)) {
-		fprintf(STDERR, "%s\n", error_get_last()["message"]);
-		exit(3);
-	}
-}
+require_once __DIR__."/../src/pharext/Version.php";
 
-$package = new \Phar($tmpname, 0, "pharext.phar");
+$file = (new pharext\Task\PharBuild(null, [
+	"header" => sprintf("pharext v%s (c) Michael Wallner <mike@php.net>", pharext\VERSION),
+	"version" => pharext\VERSION,
+	"name" => "pharext",
+	"date" => date("Y-m-d"),
+	"stub" => "pharext_packager.php",
+	"license" => file_get_contents(__DIR__."/../LICENSE")
+], false))->run();
 
 if (getenv("SIGN")) {
-	shell_exec("stty -echo");
-	printf("Password: ");
-	$password = fgets(STDIN, 1024);
-	printf("\n");
-	shell_exec("stty echo");
-	if (substr($password, -1) == "\n") {
-		$password = substr($password, 0, -1);
-	}
-	
-	$pkey = openssl_pkey_get_private("file://".__DIR__."/pharext.key", $password);
-	if (!is_resource($pkey)) {
-		$this->error("Could not load private key %s/pharext.key", __DIR__);
-		exit(3);
-	}
-	if (!openssl_pkey_export($pkey, $key)) {
-		$this->error(null);
-		exit(3);
-	}
-	
-	$package->setSignatureAlgorithm(Phar::OPENSSL, $key);
+	$pass = (new pharext\Task\Askpass)->run();
+	$sign = new pharext\Task\PharSign($file, __DIR__."/pharext.key", $pass);
+	$pkey = $sign->run();
+	$pkey->exportPublicKey(__DIR__."/../bin/pharext.pubkey");
 }
 
-$package->buildFromDirectory(dirname(__DIR__)."/src", "/^.*\.php$/");
-$package->setDefaultStub("pharext_packager.php");
-$package->setStub("#!/usr/bin/php -dphar.readonly=0\n".$package->getStub());
-unset($package);
-
-if (!rename($tmpname, $pkgname)) {
-	fprintf(STDERR, "%s\n", error_get_last()["message"]);
-	exit(4);
-}
+/* we do not need the extra logic of Task\PharRename */
+rename($file, __DIR__."/../bin/pharext");
diff --git a/src/pharext/Cli/Command.php b/src/pharext/Cli/Command.php
index e19ce93..0cc0bb4 100644
--- a/src/pharext/Cli/Command.php
+++ b/src/pharext/Cli/Command.php
@@ -4,7 +4,21 @@ namespace pharext\Cli;
 
 use pharext\Cli\Args as CliArgs;
 
-require_once "pharext/Version.php";
+use Phar;
+
+if (!function_exists("array_column")) {
+	function array_column(array $array, $col, $idx = null) {
+		$result = [];
+		foreach ($array as $el) {
+			if (isset($idx)) {
+				$result[$el[$idx]] = $el[$col];
+			} else {
+				$result[] = $el[$col];
+			}
+		}
+		return $result;
+	}
+}
 
 trait Command
 {
@@ -22,12 +36,37 @@ trait Command
 		return $this->args;
 	}
 
+	/**
+	 * Retrieve metadata of the currently running phar
+	 * @param string $key
+	 * @return mixed
+	 */
+	public function metadata($key = null) {
+		$running = new Phar(Phar::running(false));
+
+		if ($key === "signature") {
+			$sig = $running->getSignature();
+			return sprintf("%s signature of %s\n%s", 
+				$sig["hash_type"],
+				$this->metadata("name"),
+				chunk_split($sig["hash"], 64, "\n"));
+		}
+
+		$metadata = $running->getMetadata();
+		if (isset($key)) {
+			return $metadata[$key];
+		}
+		return $metadata;
+	}
+
 	/**
 	 * Output pharext vX.Y.Z header
 	 */
-	function header() {
-		printf("pharext v%s (c) Michael Wallner <mike@php.net>\n\n", 
-			\pharext\VERSION);
+	public function header() {
+		if (!headers_sent()) {
+			/* only display header, if we didn't generate any output yet */
+			printf("%s\n\n", $this->metadata("header"));
+		}
 	}
 	
 	/**
@@ -50,6 +89,22 @@ trait Command
 		}
 	}
 
+	/**
+	 * @inheritdoc
+	 * @see \pharext\Command::warn()
+	 */
+	public function warn($fmt) {
+		if (!$this->args->quiet) {
+			if (!isset($fmt)) {
+				$fmt = "%s\n";
+				$arg = error_get_last()["message"];
+			} else {
+				$arg = array_slice(func_get_args(), 1);
+			}
+			vfprintf(STDERR, "Warning: $fmt", $arg);
+		}
+	}
+
 	/**
 	 * @inheritdoc
 	 * @see \pharext\Command::error()
@@ -138,11 +193,11 @@ trait Command
 			} elseif (is_dir("$dir/$entry")) {
 				$this->rm("$dir/$entry");
 			} elseif (!unlink("$dir/$entry")) {
-				$this->error(null);
+				$this->warn(null);
 			}
 		}
 		if (!rmdir($dir)) {
-			$this->error(null);
+			$this->warn(null);
 		}
 	}
 }
diff --git a/src/pharext/Command.php b/src/pharext/Command.php
index b174f7d..61b8810 100644
--- a/src/pharext/Command.php
+++ b/src/pharext/Command.php
@@ -27,13 +27,20 @@ interface Command
 	 */
 	public function info($fmt);
 	
+	/**
+	 * Print warning
+	 * @param string $fmt
+	 * @param string ...$args
+	 */
+	public function warn($fmt);
+
 	/**
 	 * Print error
 	 * @param string $fmt
 	 * @param string ...$args
 	 */
 	public function error($fmt);
-	
+
 	/**
 	 * Execute the command
 	 * @param int $argc command line argument count
diff --git a/src/pharext/Exception.php b/src/pharext/Exception.php
new file mode 100644
index 0000000..bf3d87b
--- /dev/null
+++ b/src/pharext/Exception.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace pharext;
+
+class Exception extends \Exception
+{
+	public function __construct($message = null, $code = 0, $previous = null) {
+		if (!isset($message)) {
+			$last_error = error_get_last();
+			$message = $last_error["message"];
+			if (!$code) {
+				$code = $last_error["type"];
+			}
+		}
+		parent::__construct($message, $code, $previous);
+	}
+}
diff --git a/src/pharext/ExecCmd.php b/src/pharext/ExecCmd.php
index 056f0b2..3ea63d0 100644
--- a/src/pharext/ExecCmd.php
+++ b/src/pharext/ExecCmd.php
@@ -2,6 +2,9 @@
 
 namespace pharext;
 
+/**
+ * Execute system command
+ */
 class ExecCmd
 {
 	/**
@@ -41,11 +44,6 @@ class ExecCmd
 	public function __construct($command, $verbose = false) {
 		$this->command = $command;
 		$this->verbose = $verbose;
-		
-		/* interrupt output stream */
-		if ($verbose) {
-			printf("\n");
-		}
 	}
 	
 	/**
@@ -65,7 +63,7 @@ class ExecCmd
 	private function suExec($command, &$output, &$status) {
 		if (!($proc = proc_open($command, [STDIN,["pipe","w"],["pipe","w"]], $pipes))) {
 			$status = -1;
-			throw new \Exception("Failed to run {$command}");
+			throw new Exception("Failed to run {$command}");
 		}
 		$stdout = $pipes[1];
 		$passwd = 0;
@@ -89,7 +87,7 @@ class ExecCmd
 	/**
 	 * Run the command
 	 * @param array $args
-	 * @throws \Exception
+	 * @throws \pharext\Exception
 	 */
 	public function run(array $args = null) {
 		$exec = escapeshellcmd($this->command);
@@ -112,7 +110,7 @@ class ExecCmd
 		}
 		
 		if ($this->status) {
-			throw new \Exception("Command {$this->command} failed ({$this->status})");
+			throw new Exception("Command {$this->command} failed ({$this->status})");
 		}
 	}
 	
@@ -121,7 +119,7 @@ class ExecCmd
 	 * @return int
 	 */
 	public function getStatus() {
-		return $status;
+		return $this->status;
 	}
 	
 	/**
diff --git a/src/pharext/Installer.php b/src/pharext/Installer.php
index 7866b65..4b90c49 100644
--- a/src/pharext/Installer.php
+++ b/src/pharext/Installer.php
@@ -2,10 +2,12 @@
 
 namespace pharext;
 
-use Phar;
 use pharext\Cli\Args as CliArgs;
 use pharext\Cli\Command as CliCommand;
 
+use Phar;
+use SplObjectStorage;
+
 /**
  * The extension install command executed by the extension phar
  */
@@ -13,18 +15,6 @@ class Installer implements Command
 {
 	use CliCommand;
 	
-	/**
-	 * The temporary directory we should operate in
-	 * @var string
-	 */
-	private $tmp;
-
-	/**
-	 * The directory we came from
-	 * @var string
-	 */
-	private $cwd;
-
 	/**
 	 * Create the command
 	 */
@@ -51,11 +41,22 @@ class Installer implements Command
 		]);
 	}
 	
-	/**
-	 * Cleanup temp directory
-	 */
-	public function __destruct() {
-		$this->cleanup();
+	private function extract(Phar $phar) {
+		$this->debug("Extracting %s ...\n", basename($phar->getPath()));
+		return (new Task\Extract($phar))->run($this->args->verbose);
+	}
+
+	private function hooks(SplObjectStorage $phars) {
+		$hooks = [];
+		foreach ($phars as $phar) {
+			if (isset($phar["pharext_install.php"])) {
+				$callable = include $phar["pharext_install.php"];
+				if (is_callable($callable)) {
+					$hooks[] = $callable($this);
+				}
+			}
+		}
+		return $hooks;
 	}
 
 	/**
@@ -63,169 +64,111 @@ class Installer implements Command
 	 * @see \pharext\Command::run()
 	 */
 	public function run($argc, array $argv) {
-		$this->cwd = getcwd();
-		$this->tmp = new Tempdir(basename(Phar::running(false)));
-
+		$list = new SplObjectStorage();
 		$phar = new Phar(Phar::running(false));
+		$temp = $this->extract($phar);
+
 		foreach ($phar as $entry) {
-			if (fnmatch("*.ext.phar*", $entry->getBaseName())) {
-				$temp = new Tempdir($entry->getBaseName());
-				$phar->extractTo($temp, $entry->getFilename(), true);
-				$phars[(string) $temp] = new Phar($temp."/".$entry->getFilename());
+			$dep_file = $entry->getBaseName();
+			if (fnmatch("*.ext.phar*", $dep_file)) {
+				$dep_phar = new Phar("$temp/$dep_file");
+				$list[$dep_phar] = $this->extract($dep_phar);
 			}
 		}
-		$phars[(string) $this->tmp] = $phar;
+		/* the actual ext.phar at last */
+		$list[$phar] = $temp;
 
-		foreach ($phars as $phar) {
-			if (isset($phar["pharext_install.php"])) {
-				$callable = include $phar["pharext_install.php"];
-				if (is_callable($callable)) {
-					$recv[] = $callable($this);
-				}
-			}
-		}
-		
+		/* installer hooks */
+		$hook = $this->hooks($list);
+
+		/* standard arg stuff */
 		$errs = [];
 		$prog = array_shift($argv);
 		foreach ($this->args->parse(--$argc, $argv) as $error) {
 			$errs[] = $error;
 		}
-		
+
 		if ($this->args["help"]) {
 			$this->header();
 			$this->help($prog);
 			exit;
 		}
-		
+
 		foreach ($this->args->validate() as $error) {
 			$errs[] = $error;
 		}
-		
+
 		if ($errs) {
 			if (!$this->args["quiet"]) {
 				$this->header();
 			}
 			foreach ($errs as $err) {
 				$this->error("%s\n", $err);
-			} 
+			}
 			if (!$this->args["quiet"]) {
 				$this->help($prog);
 			}
 			exit(1);
 		}
-		
-		if (isset($recv)) {
-			foreach ($recv as $r) {
-				$r($this);
-			}
-		}
-		foreach ($phars as $temp => $phar) {
-			$this->installPackage($phar, $temp);
-		}
-	}
 
-	/**
-	 * Prepares, configures, builds and installs the extension
-	 */
-	private function installPackage(Phar $phar, $temp) {
-		$this->info("Installing %s ... \n", basename($phar->getAlias()));
-		try {
-			$phar->extractTo($temp, null, true);
-		} catch (\Exception $e) {
-			$this->error("%s\n", $e->getMessage());
-			exit(3);
+		/* post process hooks */
+		foreach ($hook as $callback) {
+			if (is_callable($callback)) {
+				$callback($this);
+			}
 		}
 
-		if (!chdir($temp)) {
-			$this->error(null);
-			exit(4);
+		/* install packages */
+		foreach ($list as $phar) {
+			$this->info("Installing %s ...\n", basename($phar->getPath()));
+			$this->install($list[$phar]);
+			$this->activate($list[$phar]);
+			$this->cleanup($list[$phar]);
+			$this->info("Successfully installed %s!\n", basename($phar->getPath()));
 		}
-		
-		$this->build();
-		$this->activate();
-		$this->cleanup($temp);
 	}
 	
 	/**
 	 * Phpize + trinity
 	 */
-	private function build() {
+	private function install($temp) {
 		try {
 			// phpize
-			$this->info("Runnin phpize ... ");
-			$cmd = new ExecCmd($this->php("ize"), $this->args->verbose);
-			$cmd->run();
-			$this->info("OK\n");
-				
+			$this->info("Running phpize ...\n");
+			$phpize = new Task\Phpize($temp, $this->args->prefix, $this->args->{"common-name"});
+			$phpize->run($this->args->verbose);
+
 			// configure
-			$this->info("Running configure ... ");
-			$args = ["--with-php-config=". $this->php("-config")];
-			if ($this->args->configure) {
-				$args = array_merge($args, $this->args->configure);
-			}
-			$cmd = new ExecCmd("./configure", $this->args->verbose);
-			$cmd->run($args);
-			$this->info("OK\n");
+			$this->info("Running configure ...\n");
+			$configure = new Task\Configure($temp, $this->args->configure, $this->args->prefix, $this->args{"common-name"});
+			$configure->run($this->args->verbose);
 				
 			// make
-			$this->info("Running make ... ");
-			$cmd = new ExecCmd("make", $this->args->verbose);
-			if ($this->args->verbose) {
-				$cmd->run(["-j3"]);
-			} else {
-				$cmd->run(["-j3", "-s"]);
-			}
-			$this->info("OK\n");
-		
+			$this->info("Running make ...\n");
+			$make = new Task\Make($temp);
+			$make->run($this->args->verbose);
+
 			// install
-			$this->info("Running make install ... ");
-			if (isset($this->args->sudo)) {
-				$cmd->setSu($this->args->sudo);
-			}
-			if ($this->args->verbose) {
-				$cmd->run(["install"]);
-			} else {
-				$cmd->run(["install", "-s"]);
-			}
-			$this->info("OK\n");
+			$this->info("Running make install ...\n");
+			$sudo = isset($this->args->sudo) ? $this->args->sudo : null;
+			$install = new Task\Make($temp, ["install"], $sudo);
+			$install->run($this->args->verbose);
 		
 		} catch (\Exception $e) {
 			$this->error("%s\n", $e->getMessage());
-			$this->error("%s\n", $cmd->getOutput());
+			exit(2);
 		}
 	}
 
-	/**
-	 * Perform any cleanups
-	 */
-	private function cleanup($temp = null) {
-		if (!isset($temp)) {
-			$temp = $this->tmp;
-		}
+	private function cleanup($temp) {
 		if (is_dir($temp)) {
-			chdir($this->cwd);
-			$this->info("Cleaning up %s ...\n", $temp);
 			$this->rm($temp);
+		} elseif (file_exists($temp)) {
+			unlink($temp);
 		}
 	}
 
-	/**
-	 * Construct a command from prefix common-name and suffix
-	 * @param type $suffix
-	 * @return string
-	 */
-	private function php($suffix) {
-		$cmd = $this->args["common-name"] . $suffix;
-		if (isset($this->args->prefix)) {
-			$cmd = $this->args->prefix . "/bin/" . $cmd;
-		}
-		return $cmd;
-	}
-
-	/**
-	 * Activate extension in php.ini
-	 */
-	private function activate() {
+	private function activate($temp) {
 		if ($this->args->ini) {
 			$files = [realpath($this->args->ini)];
 		} else {
@@ -233,60 +176,18 @@ class Installer implements Command
 			$files[] = php_ini_loaded_file();
 		}
 
-		$extension = basename(current(glob("modules/*.so")));
-		$pattern = preg_quote($extension);
-
-		foreach ($files as $index => $file) {
-			$temp = new Tempfile("phpini");
-			foreach (file($file) as $line) {
-				if (preg_match("/^\s*extension\s*=\s*[\"']?{$pattern}[\"']?\s*(;.*)?\$/", $line)) {
-					// already there
-					$this->info("Extension already activated\n");
-					return;
-				}
-				fwrite($temp->getStream(), $line);
-			}
-		}
-
-		// not found, add extension line to the last process file
-		if (isset($temp, $file)) {
-			fprintf($temp->getStream(), "extension=%s\n", $extension);
-			$temp->closeStream();
+		$sudo = isset($this->args->sudo) ? $this->args->sudo : null;
 
-			$path = $temp->getPathname();
-			$stat = stat($file);
-
-			try {
-				$this->info("Running INI owner transfer ... ");
-				$ugid = sprintf("%d:%d", $stat["uid"], $stat["gid"]);
-				$cmd = new ExecCmd("chown", $this->args->verbose);
-				if (isset($this->args->sudo)) {
-					$cmd->setSu($this->args->sudo);
-				}
-				$cmd->run([$ugid, $path]);
-				$this->info("OK\n");
-				
-				$this->info("Running INI permission transfer ... ");
-				$perm = decoct($stat["mode"] & 0777);
-				$cmd = new ExecCmd("chmod", $this->args->verbose);
-				if (isset($this->args->sudo)) {
-					$cmd->setSu($this->args->sudo);
-				}
-				$cmd->run([$perm, $path]);
-				$this->info("OK\n");
-	
-				$this->info("Running INI activation ... ");
-				$cmd = new ExecCmd("mv", $this->args->verbose);
-				if (isset($this->args->sudo)) {
-					$cmd->setSu($this->args->sudo);
-				}
-				$cmd->run([$path, $file]);
-				$this->info("OK\n");
-			} catch (\Exception $e) {
-				$this->error("%s\n", $e->getMessage());
-				$this->error("%s\n", $cmd->getOutput());
-				exit(5);
+		try {
+			$this->info("Running INI activation ...\n");
+			$activate = new Task\Activate($temp, $files, $sudo);
+			if (!$activate->run($this->args->verbose)) {
+				$this->info("Extension already activated ...\n");
 			}
+		} catch (\Exception $e) {
+			$this->error("%s\n", $e->getMessage());
+			$this->error("%s\n", $output);
+			exit(3);
 		}
 	}
 }
diff --git a/src/pharext/Openssl/PrivateKey.php b/src/pharext/Openssl/PrivateKey.php
index 35c596a..481fd86 100644
--- a/src/pharext/Openssl/PrivateKey.php
+++ b/src/pharext/Openssl/PrivateKey.php
@@ -2,6 +2,8 @@
 
 namespace pharext\Openssl;
 
+use pharext\Exception;
+
 class PrivateKey
 {
 	/**
@@ -20,16 +22,16 @@ class PrivateKey
 	 * Read a private key
 	 * @param string $file
 	 * @param string $password
-	 * @throws \Exception
+	 * @throws \pharext\Exception
 	 */
 	function __construct($file, $password) {
 		/* there appears to be a bug with refcount handling of this
 		 * resource; when the resource is stored as property, it cannot be
-		 * "coerced to a private key" on openssl_sign() alter in another method
+		 * "coerced to a private key" on openssl_sign() later in another method
 		 */
 		$key = openssl_pkey_get_private("file://$file", $password);
 		if (!is_resource($key)) {
-			throw new \Exception("Could not load private key");
+			throw new Exception("Could not load private key");
 		}
 		openssl_pkey_export($key, $this->key);
 		$this->pub = openssl_pkey_get_details($key)["key"];
@@ -46,11 +48,11 @@ class PrivateKey
 	/**
 	 * Export the public key to a file
 	 * @param string $file
-	 * @throws \Exception
+	 * @throws \pharext\Exception
 	 */
 	function exportPublicKey($file) {
 		if (!file_put_contents("$file.tmp", $this->pub) || !rename("$file.tmp", $file)) {
-			throw new \Exception(error_get_last()["message"]);
+			throw new Exception;
 		}
 	}
 }
diff --git a/src/pharext/Packager.php b/src/pharext/Packager.php
index d3e4000..ba7de89 100644
--- a/src/pharext/Packager.php
+++ b/src/pharext/Packager.php
@@ -3,7 +3,6 @@
 namespace pharext;
 
 use Phar;
-use PharData;
 use pharext\Cli\Args as CliArgs;
 use pharext\Cli\Command as CliCommand;
 
@@ -58,6 +57,10 @@ class Packager implements Command
 				CliArgs::OPTIONAL|CliArgs::SINGLE|CliArgs::REQARG],
 			[null, "signature", "Dump signature",
 				CliArgs::OPTIONAL|CliArgs::SINGLE|CliArgs::NOARG|CliArgs::HALT],
+			[null, "license", "Show license",
+				CliArgs::OPTIONAL|CliArgs::SINGLE|CliArgs::NOARG|CliArgs::HALT],
+			[null, "version", "Show version",
+				CliArgs::OPTIONAL|CliArgs::SINGLE|CliArgs::NOARG|CliArgs::HALT],
 		]);
 	}
 	
@@ -68,7 +71,7 @@ class Packager implements Command
 		foreach ($this->cleanup as $cleanup) {
 			if (is_dir($cleanup)) {
 				$this->rm($cleanup);
-			} else {
+			} elseif (file_exists($cleanup)) {
 				unlink($cleanup);
 			}
 		}
@@ -90,8 +93,16 @@ class Packager implements Command
 			$this->help($prog);
 			exit;
 		}
-		if ($this->args["signature"]) {
-			exit($this->signature($prog));
+		try {
+			foreach (["signature", "license", "version"] as $opt) {
+				if ($this->args[$opt]) {
+					printf("%s\n", $this->metadata($opt));
+					exit;
+				}
+			}
+		} catch (\Exception $e) {
+			$this->error("%s\n", $e->getMessage());
+			exit(2);
 		}
 
 		try {
@@ -119,10 +130,7 @@ class Packager implements Command
 		
 		if ($errs) {
 			if (!$this->args["quiet"]) {
-				if (!headers_sent()) {
-					/* only display header, if we didn't generate any output yet */
-					$this->header();
-				}
+				$this->header();
 			}
 			foreach ($errs as $err) {
 				$this->error("%s\n", $err);
@@ -136,72 +144,29 @@ class Packager implements Command
 		
 		$this->createPackage();
 	}
-
-	/**
-	 * Dump program signature
-	 * @param string $prog
-	 * @return int exit code
-	 */
-	function signature($prog) {
-		try {
-			$sig = (new Phar(Phar::running(false)))->getSignature();
-			printf("%s signature of %s\n%s", $sig["hash_type"], $prog, 
-				chunk_split($sig["hash"], 64, "\n"));
-			return 0;
-		} catch (\Exception $e) {
-			$this->error("%s\n", $e->getMessage());
-			return 2;
-		}
-	}
-
+	
 	/**
 	 * Download remote source
 	 * @param string $source
 	 * @return string local source
 	 */
 	private function download($source) {
-		$this->info("Fetching remote source %s ... ", $source);
-		if ($this->args["git"]) {
-			$local = new Tempdir("gitclone");
-			$cmd = new ExecCmd("git", $this->args->verbose);
-			$cmd->run(["clone", $source, $local]);
-			if (!$this->args->verbose) {
-				$this->info("OK\n");
-			}
+		$this->info("Fetching remote source %s ...\n", $source);
+		
+		if ($this->args->git) {
+			$task = new Task\GitClone($source);
 		} else {
-			$context = stream_context_create([],["notification" => function($notification, $severity, $message, $code, $bytes_cur, $bytes_max) {
-				switch ($notification) {
-					case STREAM_NOTIFY_CONNECT:
-						$this->debug("\n");
-						break;
-					case STREAM_NOTIFY_PROGRESS:
-						if ($bytes_max) {
-							$bytes_pct = $bytes_cur/$bytes_max;
-							$this->debug("\r %3d%% [%s>%s] ",
-								$bytes_pct*100,
-								str_repeat("=", round(70*$bytes_pct)), 
-								str_repeat(" ", round(70*(1-$bytes_pct)))
-							);
-						}
-						break;
-					case STREAM_NOTIFY_COMPLETED:
-						/* this is not generated, why? */
-						break;
-				}
-			}]);
-			if (!$remote = fopen($source, "r", false, $context)) {
-				$this->error(null);
-				exit(2);
-			}
-			$local = new Tempfile("remote");
-			if (!stream_copy_to_stream($remote, $local->getStream())) {
-				$this->error(null);
-				exit(2);
-			}
-			$local->closeStream();
-			$this->info("OK\n");
+			$task = new Task\StreamFetch($source, function($bytes_pct) {
+				$this->debug(" %3d%% [%s>%s] \r",
+					floor($bytes_pct*100),
+					str_repeat("=", round(50*$bytes_pct)),
+					str_repeat(" ", round(50*(1-$bytes_pct)))
+				);
+			});
 		}
-		
+		$local = $task->run($this->args->verbose);
+		$this->debug("\n");
+
 		$this->cleanup[] = $local;
 		return $local;
 	}
@@ -212,11 +177,11 @@ class Packager implements Command
 	 * @return string extracted directory
 	 */
 	private function extract($source) {
-		$dest = new Tempdir("local");
-		$this->debug("Extracting %s to %s ... ", $source, $dest);
-		$archive = new PharData($source);
-		$archive->extractTo($dest);
-		$this->debug("OK\n");
+		$this->debug("Extracting %s ...\n", $source);
+		
+		$task = new Task\Extract($source);
+		$dest = $task->run($this->args->verbose);
+		
 		$this->cleanup[] = $dest;
 		return $dest;
 	}
@@ -229,134 +194,96 @@ class Packager implements Command
 	private function localize($source) {
 		if (!stream_is_local($source)) {
 			$source = $this->download($source);
+			$this->cleanup[] = $source;
 		}
+		$source = realpath($source);
 		if (!is_dir($source)) {
 			$source = $this->extract($source);
-			if ($this->args["pecl"]) {
-				$this->debug("Sanitizing PECL dir ... ");
-				$dirs = glob("$source/*", GLOB_ONLYDIR);
-				$files = array_diff(glob("$source/*"), $dirs);
-				$source = current($dirs);
-				foreach ($files as $file) {
-					rename($file, "$source/" . basename($file));
-				}
-				$this->debug("OK\n");
+			$this->cleanup[] = $source;
+			
+			if ($this->args->pecl) {
+				$this->debug("Sanitizing PECL dir ...\n");
+				$source = (new Task\PeclFixup($source))->run($this->args->verbose);
 			}
 		}
 		return $source;
 	}
 
-	/**
-	 * Traverses all pharext source files to bundle
-	 * @return Generator
-	 */
-	private function bundle() {
-		$rdi = new \RecursiveDirectoryIterator(__DIR__);
-		$rii = new \RecursiveIteratorIterator($rdi);
-		for ($rii->rewind(); $rii->valid(); $rii->next()) {
-			yield "pharext/". $rii->getSubPathname() => $rii->key();
-			
-		}
-	}
-
-	/**
-	 * Ask for password on the console
-	 * @param string $prompt
-	 * @return string password
-	 */
-	private function askpass($prompt = "Password:") {
-		system("stty -echo", $retval);
-		if ($retval) {
-			$this->error("Could not disable echo on the terminal\n");
-		}
-		printf("%s ", $prompt);
-		$pass = fgets(STDIN, 1024);
-		system("stty echo");
-		if (substr($pass, -1) == "\n") {
-			$pass = substr($pass, 0, -1);
-		}
-		return $pass;
-	}
-
 	/**
 	 * Creates the extension phar
 	 */
 	private function createPackage() {
-		$pkguniq = uniqid();
-		$pkgtemp = sprintf("%s/%s.phar", sys_get_temp_dir(), $pkguniq);
-		$pkgdesc = "{$this->args->name}-{$this->args->release}";
-	
-		$this->info("Creating phar %s ...%s", $pkgtemp, $this->args->verbose ? "\n" : " ");
 		try {
-			$package = new Phar($pkgtemp);
+			$meta = array_merge($this->metadata(), [
+				"date" => date("Y-m-d"),
+				"name" => $this->args->name,
+				"release" => $this->args->release,
+				"license" => @file_get_contents(current(glob($this->source->getBaseDir()."/LICENSE*"))),
+				"stub" => "pharext_installer.php",
+			]);
+			$file = (new Task\PharBuild($this->source, $meta))->run();
 
 			if ($this->args->sign) {
-				$this->info("\nUsing private key to sign phar ... \n");
-				$privkey = new Openssl\PrivateKey(realpath($this->args->sign), $this->askpass());
-				$privkey->sign($package);
+				$this->info("Using private key to sign phar ...\n");
+				$pass = (new Task\Askpass)->run($this->args->verbose);
+				$sign = new Task\PharSign($file, $this->args->sign, $pass);
+				$pkey = $sign->run($this->args->verbose);
 			}
 
-			$package->startBuffering();
-			$package->buildFromIterator($this->source, $this->source->getBaseDir());
-			$package->buildFromIterator($this->bundle(__DIR__));
-			$package->addFile(__DIR__."/../pharext_installer.php", "pharext_installer.php");
-			$package->setDefaultStub("pharext_installer.php");
-			$package->setStub("#!/usr/bin/php -dphar.readonly=1\n".$package->getStub());
-			$package->stopBuffering();
+		} catch (\Exception $e) {
+			$this->error("%s\n", $e->getMessage());
+			exit(4);
+		}
+
+		if ($this->args->gzip) {
+			try {
+				$gzip = (new Task\PharCompress($file, Phar::GZ))->run();
+				$move = new Task\PharRename($gzip, $this->args->dest, $this->args->name ."-". $this->args->release);
+				$name = $move->run($this->args->verbose);
 
-			if (!chmod($pkgtemp, 0777)) {
-				$this->error(null);
-			} elseif ($this->args->verbose) {
-				$this->debug("Created executable phar %s\n", $pkgtemp);
-			} else {
-				$this->info("OK\n");
-			}
-			if ($this->args->gzip) {
-				$this->info("Compressing with gzip ... ");
-				try {
-					$package->compress(Phar::GZ)
-						->setDefaultStub("pharext_installer.php");
-					$this->info("OK\n");
-				} catch (\Exception $e) {
-					$this->error("%s\n", $e->getMessage());
+				$this->info("Created gzipped phar %s\n", $name);
+
+				if ($this->args->sign) {
+					$sign = new Task\PharSign($name, $this->args->sign, $pass);
+					$sign->run($this->args->verbose)->exportPublicKey($name.".pubkey");
 				}
+
+			} catch (\Exception $e) {
+				$this->warn("%s\n", $e->getMessage());
 			}
-			if ($this->args->bzip) {
-				$this->info("Compressing with bzip ... ");
-				try {
-					$package->compress(Phar::BZ2)
-						->setDefaultStub("pharext_installer.php");
-					$this->info("OK\n");
-				} catch (\Exception $e) {
-					$this->error("%s\n", $e->getMessage());
+		}
+		
+		if ($this->args->bzip) {
+			try {
+				$bzip = (new Task\PharCompress($file, Phar::BZ2))->run();
+				$move = new Task\PharRename($bzip, $this->args->dest, $this->args->name ."-". $this->args->release);
+				$name = $move->run($this->args->verbose);
+
+				$this->info("Created bzipped phar %s\n", $name);
+
+				if ($this->args->sign) {
+					$sign = new Task\PharSign($name, $this->args->sign, $pass);
+					$sign->run($this->args->verbose)->exportPublicKey($name.".pubkey");
 				}
+
+			} catch (\Exception $e) {
+				$this->warn("%s\n", $e->getMessage());
+			}
+		}
+
+		try {
+			$move = new Task\PharRename($file, $this->args->dest, $this->args->name ."-". $this->args->release);
+			$name = $move->run($this->args->verbose);
+
+			$this->info("Created executable phar %s\n", $name);
+
+			if (isset($pkey)) {
+				$pkey->exportPublicKey($name.".pubkey");
 			}
 
-			unset($package);
 		} catch (\Exception $e) {
 			$this->error("%s\n", $e->getMessage());
 			exit(4);
 		}
-
-		foreach (glob($pkgtemp."*") as $pkgtemp) {
-			$pkgfile = str_replace($pkguniq, "{$pkgdesc}.ext", $pkgtemp);
-			$pkgname = $this->args->dest ."/". basename($pkgfile);
-			$this->info("Finalizing %s ... ", $pkgname);
-			if (!rename($pkgtemp, $pkgname)) {
-				$this->error(null);
-				exit(5);
-			}
-			$this->info("OK\n");
-			if ($this->args->sign && isset($privkey)) {
-				$keyname = $this->args->dest ."/". basename($pkgfile) . ".pubkey";
-				$this->info("Public Key %s ... ", $keyname);
-				try {
-					$privkey->exportPublicKey($keyname);
-					$this->info("OK\n");
-				} catch (\Exception $e) {
-					$this->error("%s", $e->getMessage());
-				}
-			}
-		} 
 	}
 }
diff --git a/src/pharext/SourceDir/Git.php b/src/pharext/SourceDir/Git.php
index 531aa65..8e35bf9 100644
--- a/src/pharext/SourceDir/Git.php
+++ b/src/pharext/SourceDir/Git.php
@@ -55,7 +55,7 @@ class Git implements \IteratorAggregate, SourceDir
 					}
 					/* there may be symlinks, so no realpath here */
 					if (!file_exists("$path/$file")) {
-						$this->cmd->error("File %s does not exist in %s\n", $file, $path);
+						$this->cmd->warn("File %s does not exist in %s\n", $file, $path);
 					}
 					yield "$path/$file";
 				}
diff --git a/src/pharext/SourceDir/Pecl.php b/src/pharext/SourceDir/Pecl.php
index d21a0e0..0b7055a 100644
--- a/src/pharext/SourceDir/Pecl.php
+++ b/src/pharext/SourceDir/Pecl.php
@@ -3,6 +3,7 @@
 namespace pharext\SourceDir;
 
 use pharext\Command;
+use pharext\Exception;
 use pharext\SourceDir;
 
 /**
@@ -38,7 +39,7 @@ class Pecl implements \IteratorAggregate, SourceDir
 		} elseif (realpath("$path/package.xml")) {
 			$sxe = simplexml_load_file("$path/package.xml");
 		} else {
-			throw new \Exception("Missing package.xml in $path");
+			throw new Exception("Missing package.xml in $path");
 		}
 		$sxe->registerXPathNamespace("pecl", $sxe->getDocNamespaces()[""]);
 		
@@ -46,14 +47,14 @@ class Pecl implements \IteratorAggregate, SourceDir
 		if (!isset($args->name)) {
 			$name = (string) $sxe->xpath("/pecl:package/pecl:name")[0];
 			foreach ($args->parse(2, ["--name", $name]) as $error) {
-				$cmd->error("%s\n", $error);
+				$cmd->warn("%s\n", $error);
 			}
 		}
 		
 		if (!isset($args->release)) {
 			$release = (string) $sxe->xpath("/pecl:package/pecl:version/pecl:release")[0];
 			foreach ($args->parse(2, ["--release", $release]) as $error) {
-				$cmd->error("%s\n", $error);
+				$cmd->warn("%s\n", $error);
 			}
 		}
 		
@@ -89,6 +90,7 @@ class Pecl implements \IteratorAggregate, SourceDir
 	 * @return string
 	 */
 	private static function loadHook($configure, $dependencies) {
+		require_once "pharext/Version.php";
 		return include __DIR__."/../../pharext_install.tpl.php";
 	}
 
@@ -106,7 +108,7 @@ class Pecl implements \IteratorAggregate, SourceDir
 						substr($b, strpos(".ext.phar", $b))
 					);
 				});
-				yield realpath($this->path."/".end($glob));
+				yield end($glob);
 			} else {
 				unset($dependencies[$key]);
 			}
@@ -132,17 +134,17 @@ class Pecl implements \IteratorAggregate, SourceDir
 	private function generateFiles() {
 		foreach ($this->generateHooks() as $file => $hook) {
 			if ($this->cmd->getArgs()->verbose) {
-				$this->cmd->info("Packaging %s\n", is_string($hook) ? $hook : $file);
+				$this->cmd->info("Packaging %s\n", is_scalar($hook) ? $hook : $file);
 			}
 			yield $file => $hook;
 		}
 		foreach ($this->sxe->xpath("//pecl:file") as $file) {
 			$path = $this->path ."/". $this->dirOf($file) ."/". $file["name"];
 			if ($this->cmd->getArgs()->verbose) {
-				$this->cmd->info("Packaging %s\n", $path);
+				$this->cmd->info("Packaging %s\n", substr($path, strlen($this->path)));
 			}
 			if (!($realpath = realpath($path))) {
-				$this->cmd->error("File %s does not exist", $path);
+				$this->cmd->warn("File %s does not exist", $path);
 			}
 			yield $realpath;
 		}
diff --git a/src/pharext/SourceDir/Pharext.php b/src/pharext/SourceDir/Pharext.php
index 2675a78..8ca0901 100644
--- a/src/pharext/SourceDir/Pharext.php
+++ b/src/pharext/SourceDir/Pharext.php
@@ -3,6 +3,7 @@
 namespace pharext\SourceDir;
 
 use pharext\Command;
+use pharext\Exception;
 use pharext\SourceDir;
 
 /**
@@ -35,7 +36,7 @@ class Pharext implements \IteratorAggregate, SourceDir
 		
 		$callable = include "$path/pharext_package.php";
 		if (!is_callable($callable)) {
-			throw new \Exception("Package hook did not return a callable");
+			throw new Exception("Package hook did not return a callable");
 		}
 		$this->iter = $callable($cmd, $path);
 	}
diff --git a/src/pharext/Task.php b/src/pharext/Task.php
new file mode 100644
index 0000000..473e1a6
--- /dev/null
+++ b/src/pharext/Task.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace pharext;
+
+/**
+ * Simple task interface
+ */
+interface Task
+{
+	public function run($verbose = false);
+}
diff --git a/src/pharext/Task/Activate.php b/src/pharext/Task/Activate.php
new file mode 100644
index 0000000..29341cc
--- /dev/null
+++ b/src/pharext/Task/Activate.php
@@ -0,0 +1,94 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Exception;
+use pharext\ExecCmd;
+use pharext\Task;
+use pharext\Tempfile;
+
+/**
+ * PHP INI activation
+ */
+class Activate implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $cwd;
+
+	/**
+	 * @var array
+	 */
+	private $inis;
+
+	/**
+	 * @var string
+	 */
+	private $sudo;
+
+	/**
+	 * @param string $cwd working directory
+	 * @param array $inis custom INI or list of loaded/scanned INI files
+	 * @param string $sudo sudo command
+	 * @throws \pharext\Exception
+	 */
+	public function __construct($cwd, array $inis, $sudo = null) {
+		$this->cwd = $cwd;
+		$this->sudo = $sudo;
+		if (!$this->inis = $inis) {
+			throw new Exception("No PHP INIs given");
+		}
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return boolean false, if extension was already activated
+	 */
+	public function run($verbose = false) {
+		$extension = basename(current(glob("{$this->cwd}/modules/*.so")));
+		$pattern = preg_quote($extension);
+
+		foreach ($this->inis as $file) {
+			$temp = new Tempfile("phpini");
+			foreach (file($file) as $line) {
+				if (preg_match("/^\s*extension\s*=\s*[\"']?{$pattern}[\"']?\s*(;.*)?\$/", $line)) {
+					return false;
+				}
+				fwrite($temp->getStream(), $line);
+			}
+		}
+
+		/* not found; append to last processed file, which is the main by default */
+		fprintf($temp->getStream(), "extension=%s\n", $extension);
+		$temp->closeStream();
+
+		$path = $temp->getPathname();
+		$stat = stat($file);
+
+		// owner transfer
+		$ugid = sprintf("%d:%d", $stat["uid"], $stat["gid"]);
+		$cmd = new ExecCmd("chown", $verbose);
+		if (isset($this->sudo)) {
+			$cmd->setSu($this->sudo);
+		}
+		$cmd->run([$ugid, $path]);
+
+		// permission transfer
+		$perm = decoct($stat["mode"] & 0777);
+		$cmd = new ExecCmd("chmod", $verbose);
+		if (isset($this->sudo)) {
+			$cmd->setSu($this->sudo);
+		}
+		$cmd->run([$perm, $path]);
+
+		// rename
+		$cmd = new ExecCmd("mv", $verbose);
+		if (isset($this->sudo)) {
+			$cmd->setSu($this->sudo);
+		}
+		$cmd->run([$path, $file]);
+
+		return true;
+	}
+}
diff --git a/src/pharext/Task/Askpass.php b/src/pharext/Task/Askpass.php
new file mode 100644
index 0000000..24b22da
--- /dev/null
+++ b/src/pharext/Task/Askpass.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Exception;
+use pharext\Task;
+
+/**
+ * Ask password on console
+ */
+class Askpass implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $prompt;
+
+	/**
+	 * @param string $prompt
+	 */
+	public function __construct($prompt = "Password:") {
+		$this->prompt = $prompt;
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return string
+	 */
+	public function run($verbose = false) {
+		system("stty -echo");
+		printf("%s ", $this->prompt);
+		$pass = fgets(STDIN, 1024);
+		printf("\n");
+		system("stty echo");
+		if (substr($pass, -1) == "\n") {
+			$pass = substr($pass, 0, -1);
+		}
+		return $pass;
+	}
+}
\ No newline at end of file
diff --git a/src/pharext/Task/BundleGenerator.php b/src/pharext/Task/BundleGenerator.php
new file mode 100644
index 0000000..aabf9c8
--- /dev/null
+++ b/src/pharext/Task/BundleGenerator.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Task;
+
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+
+/**
+ * List all library files of pharext to bundle with a phar
+ */
+class BundleGenerator implements Task
+{
+	/**
+	 * @param bool $verbose
+	 * @return Generator
+	 */
+	public function run($verbose = false) {
+		$rdi = new RecursiveDirectoryIterator(dirname(dirname(__DIR__)));
+		$rii = new RecursiveIteratorIterator($rdi);
+		for ($rii->rewind(); $rii->valid(); $rii->next()) {
+			if (!$rii->isDot()) {
+				yield $rii->getSubPathname() => $rii->key();
+			}
+		}
+	}
+}
diff --git a/src/pharext/Task/Configure.php b/src/pharext/Task/Configure.php
new file mode 100644
index 0000000..3effbfb
--- /dev/null
+++ b/src/pharext/Task/Configure.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Exception;
+use pharext\ExecCmd;
+use pharext\Task;
+
+/**
+ * Runs extension's configure
+ */
+class Configure implements Task
+{
+	/**
+	 * @var array
+	 */
+	private $args;
+
+	/**
+	 * @var string
+	 */
+	private $cwd;
+
+	/**
+	 * @param string $cwd working directory
+	 * @param array $args configure args
+	 * @param string $prefix install prefix, e.g. /usr/local
+	 * @param string $common_name PHP programs common name, e.g. php5
+	 */
+	public function __construct($cwd, array $args = null, $prefix = null, $common_name = "php") {
+		$this->cwd = $cwd;
+		$cmd = $common_name . "-config";
+		if (isset($prefix)) {
+			$cmd = $prefix . "/bin/" . $cmd;
+		}
+		$this->args =  ["--with-php-config=$cmd"];
+		if ($args) {
+			$this->args = array_merge($this->args, $args);
+		}
+	}
+
+	public function run($verbose = false) {
+		$pwd = getcwd();
+		if (!chdir($this->cwd)) {
+			throw new Exception;
+		}
+		try {
+			$cmd = new ExecCmd("./configure", $verbose);
+			$cmd->run($this->args);
+		} finally {
+			chdir($pwd);
+		}
+	}
+}
diff --git a/src/pharext/Task/Extract.php b/src/pharext/Task/Extract.php
new file mode 100644
index 0000000..b2f954f
--- /dev/null
+++ b/src/pharext/Task/Extract.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Task;
+use pharext\Tempdir;
+
+use Phar;
+use PharData;
+
+/**
+ * Extract a package archive
+ */
+class Extract implements Task
+{
+	/**
+	 * @var Phar(Data)
+	 */
+	private $source;
+
+	/**
+	 * @param mixed $source archive location
+	 */
+	public function __construct($source) {
+		if ($source instanceof Phar || $source instanceof PharData) {
+			$this->source = $source;
+		} else {
+			$this->source = new PharData($source);
+		}
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return \pharext\Tempdir
+	 */
+	public function run($verbose = false) {
+		$dest = new Tempdir("extract");
+		$this->source->extractTo($dest);
+		return $dest;
+	}
+}
diff --git a/src/pharext/Task/GitClone.php b/src/pharext/Task/GitClone.php
new file mode 100644
index 0000000..709a34a
--- /dev/null
+++ b/src/pharext/Task/GitClone.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\ExecCmd;
+use pharext\Task;
+use pharext\Tempdir;
+
+/**
+ * Clone a git repo
+ */
+class GitClone implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $source;
+
+	/**
+	 * @param string $source git repo location
+	 */
+	public function __construct($source) {
+		$this->source = $source;
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return \pharext\Tempdir
+	 */
+	public function run($verbose = false) {
+		$local = new Tempdir("gitclone");
+		$cmd = new ExecCmd("git", $verbose);
+		$cmd->run(["clone", $this->source, $local]);
+		return $local;
+	}
+}
diff --git a/src/pharext/Task/Make.php b/src/pharext/Task/Make.php
new file mode 100644
index 0000000..9e71565
--- /dev/null
+++ b/src/pharext/Task/Make.php
@@ -0,0 +1,65 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\ExecCmd;
+use pharext\Exception;
+use pharext\Task;
+
+/**
+ * Run make in the source dir
+ */
+class Make implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $cwd;
+
+	/**
+	 * @var array
+	 */
+	private $args;
+
+	/**
+	 * @var string
+	 */
+	private $sudo;
+
+	/**
+	 *
+	 * @param string $cwd working directory
+	 * @param array $args make's arguments
+	 * @param string $sudo sudo command
+	 */
+	public function __construct($cwd, array $args = null, $sudo = null) {
+		$this->cwd = $cwd;
+		$this->sudo = $sudo;
+		$this->args = $args;
+	}
+
+	/**
+	 *
+	 * @param bool $verbose
+	 * @throws \pharext\Exception
+	 */
+	public function run($verbose = false) {
+		$pwd = getcwd();
+		if (!chdir($this->cwd)) {
+			throw new Exception;
+		}
+		try {
+			$cmd = new ExecCmd("make", $verbose);
+			if (isset($this->sudo)) {
+				$cmd->setSu($this->sudo);
+			}
+			$args = $this->args;
+			if (!$verbose) {
+				$args = array_merge((array) $args, ["-s"]);
+			}
+			$cmd->run($args);
+		} finally {
+			chdir($pwd);
+		}
+	}
+}
diff --git a/src/pharext/Task/PeclFixup.php b/src/pharext/Task/PeclFixup.php
new file mode 100644
index 0000000..08a1d94
--- /dev/null
+++ b/src/pharext/Task/PeclFixup.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Exception;
+use pharext\Task;
+
+/**
+ * Fixup package.xml files in an extracted PECL dir
+ */
+class PeclFixup implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $source;
+
+	/**
+	 * @param string $source source directory
+	 */
+	public function __construct($source) {
+		$this->source = $source;
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return string sanitized source location
+	 * @throws \pahrext\Exception
+	 */
+	public function run($verbose = false) {
+		$dirs = glob("{$this->source}/*", GLOB_ONLYDIR);
+		$files = array_diff(glob("{$this->source}/*"), $dirs);
+
+		if (count($dirs) !== 1 || !count($files)) {
+			throw new Exception("Does not look like an extracted PECL dir: {$this->source}");
+		}
+
+		$dest = current($dirs);
+
+		foreach ($files as $file) {
+			if (!rename($file, "$dest/" . basename($file))) {
+				throw new Exception;
+			}
+		}
+
+		return $dest;
+	}
+}
diff --git a/src/pharext/Task/PharBuild.php b/src/pharext/Task/PharBuild.php
new file mode 100644
index 0000000..d6f2788
--- /dev/null
+++ b/src/pharext/Task/PharBuild.php
@@ -0,0 +1,82 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Exception;
+use pharext\SourceDir;
+use pharext\Task;
+use pharext\Tempname;
+
+use Phar;
+
+/**
+ * Build phar
+ */
+class PharBuild implements Task
+{
+	/**
+	 * @var \pharext\SourceDir
+	 */
+	private $source;
+
+	/**
+	 * @var array
+	 */
+	private $meta;
+
+	/**
+	 * @var bool
+	 */
+	private $readonly;
+
+	/**
+	 * @param SourceDir $source extension source directory
+	 * @param array $meta phar meta data
+	 * @param bool $readonly whether the stub has -dphar.readonly=1 set
+	 */
+	public function __construct(SourceDir $source = null, array $meta = null, $readonly = true) {
+		$this->source = $source;
+		$this->meta = $meta;
+		$this->readonly = $readonly;
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return \pharext\Tempname
+	 * @throws \pharext\Exception
+	 */
+	public function run($verbose = false) {
+		/* Phar::compress() and ::convert*() use strtok("."), ugh!
+		 * so, be sure to not use any other dots in the filename
+		 * except for .phar
+		 */
+		$temp = new Tempname("", "-pharext.phar");
+
+		$phar = new Phar($temp);
+		$phar->startBuffering();
+
+		if ($this->meta) {
+			$phar->setMetadata($this->meta);
+			if (isset($this->meta["stub"])) {
+				$phar->setDefaultStub($this->meta["stub"]);
+				$phar->setStub("#!/usr/bin/php -dphar.readonly=" .
+					intval($this->readonly) ."\n".
+					$phar->getStub());
+			}
+		}
+
+		$phar->buildFromIterator((new Task\BundleGenerator)->run());
+
+		if ($this->source) {
+			$phar->buildFromIterator($this->source, $this->source->getBaseDir());
+		}
+
+		$phar->stopBuffering();
+
+		if (!chmod($temp, fileperms($temp) | 0111)) {
+			throw new Exception;
+		}
+		
+		return $temp;
+	}
+}
\ No newline at end of file
diff --git a/src/pharext/Task/PharCompress.php b/src/pharext/Task/PharCompress.php
new file mode 100644
index 0000000..d090e28
--- /dev/null
+++ b/src/pharext/Task/PharCompress.php
@@ -0,0 +1,66 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Task;
+
+use Phar;
+
+/**
+ * Clone a compressed copy of a phar
+ */
+class PharCompress implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $file;
+
+	/**
+	 * @var Phar
+	 */
+	private $package;
+
+	/**
+	 * @var int
+	 */
+	private $encoding;
+
+	/**
+	 * @var string
+	 */
+	private $extension;
+
+	/**
+	 * @param string $file path to the original phar
+	 * @param int $encoding Phar::GZ or Phar::BZ2
+	 */
+	public function __construct($file, $encoding) {
+		$this->file = $file;
+		$this->package = new Phar($file);
+		$this->encoding = $encoding;
+
+		switch ($encoding) {
+			case Phar::GZ:
+				$this->extension = ".gz";
+				break;
+			case Phar::BZ2:
+				$this->extension = ".bz2";
+				break;
+		}
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return string
+	 */
+	public function run($verbose = false) {
+		$phar = $this->package->compress($this->encoding);
+		$meta = $phar->getMetadata();
+		if (isset($meta["stub"])) {
+			/* drop shebang */
+			$phar->setDefaultStub($meta["stub"]);
+		}
+		return $this->file . $this->extension;
+	}
+}
diff --git a/src/pharext/Task/PharRename.php b/src/pharext/Task/PharRename.php
new file mode 100644
index 0000000..19094c1
--- /dev/null
+++ b/src/pharext/Task/PharRename.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Exception;
+use pharext\Task;
+
+/**
+ * Rename the phar archive
+ */
+class PharRename implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $phar;
+
+	/**
+	 * @var string
+	 */
+	private $dest;
+
+	/**
+	 * @var string
+	 */
+	private $name;
+
+	/**
+	 * @param string $phar path to phar
+	 * @param string $dest destination dir
+	 * @param string $name package name
+	 */
+	public function __construct($phar, $dest, $name) {
+		$this->phar = $phar;
+		$this->dest = $dest;
+		$this->name = $name;
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return string path to renamed phar
+	 * @throws \pharext\Exception
+	 */
+	public function run($verbose = false) {
+		$extension = substr(strstr($this->phar, "-pharext.phar"), 8);
+		$name = sprintf("%s/%s.ext%s", $this->dest, $this->name, $extension);
+
+		if (!rename($this->phar, $name)) {
+			throw new Exception;
+		}
+
+		return $name;
+	}
+}
diff --git a/src/pharext/Task/PharSign.php b/src/pharext/Task/PharSign.php
new file mode 100644
index 0000000..739c587
--- /dev/null
+++ b/src/pharext/Task/PharSign.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Openssl;
+use pharext\Task;
+
+use Phar;
+
+/**
+ * Sign the phar with a private key
+ */
+class PharSign implements Task
+{
+	/**
+	 * @var Phar
+	 */
+	private $phar;
+
+	/**
+	 * @var \pharext\Openssl\PrivateKey
+	 */
+	private $pkey;
+
+	/**
+	 *
+	 * @param mixed $phar phar instance or path to phar
+	 * @param string $pkey path to private key
+	 * @param string $pass password for the private key
+	 */
+	public function __construct($phar, $pkey, $pass) {
+		if ($phar instanceof Phar || $phar instanceof PharData) {
+			$this->phar = $phar;
+		} else {
+			$this->phar = new Phar($phar);
+		}
+		$this->pkey = new Openssl\PrivateKey($pkey, $pass);
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return \pharext\Openssl\PrivateKey
+	 */
+	public function run($verbose = false) {
+		$this->pkey->sign($this->phar);
+		return $this->pkey;
+	}
+}
diff --git a/src/pharext/Task/Phpize.php b/src/pharext/Task/Phpize.php
new file mode 100644
index 0000000..ab70534
--- /dev/null
+++ b/src/pharext/Task/Phpize.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Exception;
+use pharext\ExecCmd;
+use pharext\Task;
+
+/**
+ * Run phpize in the extension source directory
+ */
+class Phpize implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $phpize;
+
+	/**
+	 *
+	 * @var string
+	 */
+	private $cwd;
+
+	/**
+	 * @param string $cwd working directory
+	 * @param string $prefix install prefix, e.g. /usr/local
+	 * @param string $common_name PHP program common name, e.g. php5
+	 */
+	public function __construct($cwd, $prefix = null,  $common_name = "php") {
+		$this->cwd = $cwd;
+		$cmd = $common_name . "ize";
+		if (isset($prefix)) {
+			$cmd = $prefix . "/bin/" . $cmd;
+		}
+		$this->phpize = $cmd;
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @throws \pharext\Exception
+	 */
+	public function run($verbose = false) {
+		$pwd = getcwd();
+		if (!chdir($this->cwd)) {
+			throw new Exception;
+		}
+		try {
+			$cmd = new ExecCmd($this->phpize, $verbose);
+			$cmd->run();
+		} finally {
+			chdir($pwd);
+		}
+	}
+}
diff --git a/src/pharext/Task/StreamFetch.php b/src/pharext/Task/StreamFetch.php
new file mode 100644
index 0000000..4f090ef
--- /dev/null
+++ b/src/pharext/Task/StreamFetch.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace pharext\Task;
+
+use pharext\Exception;
+use pharext\Task;
+use pharext\Tempfile;
+
+/**
+ * Fetch a remote archive
+ */
+class StreamFetch implements Task
+{
+	/**
+	 * @var string
+	 */
+	private $source;
+
+	/**
+	 * @var callable
+	 */
+	private $progress;
+
+	/**
+	 * @param string $source remote file location
+	 * @param callable $progress progress callback
+	 */
+	public function __construct($source, callable $progress) {
+		$this->source = $source;
+		$this->progress = $progress;
+	}
+
+	private function createStreamContext() {
+		$progress = $this->progress;
+
+		return stream_context_create([],["notification" => function($notification, $severity, $message, $code, $bytes_cur, $bytes_max) use($progress) {
+			switch ($notification) {
+				case STREAM_NOTIFY_CONNECT:
+					$progress(0);
+					break;
+				case STREAM_NOTIFY_PROGRESS:
+					$progress($bytes_max ? $bytes_cur/$bytes_max : .5);
+					break;
+				case STREAM_NOTIFY_COMPLETED:
+					/* this is not generated, why? */
+					$progress(1);
+					break;
+			}
+		}]);
+	}
+
+	/**
+	 * @param bool $verbose
+	 * @return \pharext\Task\Tempfile
+	 * @throws \pharext\Exception
+	 */
+	public function run($verbose = false) {
+		$context = $this->createStreamContext();
+
+		if (!$remote = fopen($this->source, "r", false, $context)) {
+			throw new Exception;
+		}
+		
+		$local = new Tempfile("remote");
+		if (!stream_copy_to_stream($remote, $local->getStream())) {
+			throw new Exception;
+		}
+		$local->closeStream();
+
+		/* STREAM_NOTIFY_COMPLETED is not generated, see above */
+		call_user_func($this->progress, 1);
+
+		return $local;
+	}
+}
diff --git a/src/pharext/Tempdir.php b/src/pharext/Tempdir.php
index 2de174d..eb59263 100644
--- a/src/pharext/Tempdir.php
+++ b/src/pharext/Tempdir.php
@@ -2,16 +2,19 @@
 
 namespace pharext;
 
+/**
+ * Create a temporary directory
+ */
 class Tempdir extends \SplFileInfo
 {
-	private $dir;
-	
+	/**
+	 * @param string $prefix prefix to uniqid()
+	 * @throws \pharext\Exception
+	 */
 	public function __construct($prefix) {
-		$temp = sprintf("%s/%s", sys_get_temp_dir(), uniqid($prefix));
-		if (!is_dir($temp)) {
-			if (!mkdir($temp, 0700, true)) {
-				throw new Exception("Could not create tempdir: ".error_get_last()["message"]);
-			}
+		$temp = new Tempname($prefix);
+		if (!is_dir($temp) && !mkdir($temp, 0700, true)) {
+			throw new Exception("Could not create tempdir: ".error_get_last()["message"]);
 		}
 		parent::__construct($temp);
 	}
diff --git a/src/pharext/Tempfile.php b/src/pharext/Tempfile.php
index c890cd9..e720551 100644
--- a/src/pharext/Tempfile.php
+++ b/src/pharext/Tempfile.php
@@ -2,38 +2,56 @@
 
 namespace pharext;
 
+/**
+ * Create a new temporary file
+ */
 class Tempfile extends \SplFileInfo
 {
+	/**
+	 * @var resource
+	 */
 	private $handle;
-	
-	function __construct($prefix) {
+
+	/**
+	 * @param string $prefix uniqid() prefix
+	 * @param string $suffix e.g. file extension
+	 * @throws \pharext\Exception
+	 */
+	public function __construct($prefix, $suffix = ".tmp") {
 		$tries = 0;
-		/* PharData needs a dot in the filename, sure */
-		$temp = sys_get_temp_dir() . "/";
-		
 		$omask = umask(077);
 		do {
-			$path = $temp.uniqid($prefix).".tmp";
+			$path = new Tempname($prefix, $suffix);
 			$this->handle = fopen($path, "x");
 		} while (!is_resource($this->handle) && $tries++ < 10);
 		umask($omask);
 		
 		if (!is_resource($this->handle)) {
-			throw new \Exception("Could not create temporary file");
+			throw new Exception("Could not create temporary file");
 		}
 		
 		parent::__construct($path);
 	}
-	
-	function __destruct() {
+
+	/**
+	 * Unlink the file
+	 */
+	public function __destruct() {
 		@unlink($this->getPathname());
 	}
-	
-	function closeStream() {
+
+	/**
+	 * Close the stream
+	 */
+	public function closeStream() {
 		fclose($this->handle);
 	}
 
-	function getStream() {
+	/**
+	 * Retrieve the stream resource
+	 * @return resource
+	 */
+	public function getStream() {
 		return $this->handle;
 	}
 }
diff --git a/src/pharext/Tempname.php b/src/pharext/Tempname.php
new file mode 100644
index 0000000..b5e7520
--- /dev/null
+++ b/src/pharext/Tempname.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace pharext;
+
+/**
+ * A temporary file/directory name
+ */
+class Tempname
+{
+	/**
+	 * @var string
+	 */
+	private $name;
+
+	/**
+	 * @param string $prefix uniqid() prefix
+	 * @param string $suffix e.g. file extension
+	 */
+	public function __construct($prefix, $suffix = null) {
+		$this->name = sys_get_temp_dir() . "/" . uniqid($prefix) . $suffix;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function __toString() {
+		return (string) $this->name;
+	}
+}
diff --git a/src/pharext_install.tpl.php b/src/pharext_install.tpl.php
index 04d84b2..f7a356d 100644
--- a/src/pharext_install.tpl.php
+++ b/src/pharext_install.tpl.php
@@ -1,7 +1,7 @@
 <?='<?php'?>
 
 /**
- * Generated by pharext v<?=pharext\VERSION?> at <?=date("Y-m-d H:i:i T")?>.
+ * Generated by pharext v<?=pharext\VERSION?> at <?=date("Y-m-d H:i:s T")?>.
  */
 namespace pharext;
 
-- 
2.30.2