Refactor to separate the framework from the app; drop message stuff, this app is just user management. Add a json view for individual usersHEADmaster

3 files changed, 542 insertions, 0 deletions

diff --git a/apps/um/ext/PasswordHash.class.php b/apps/um/ext/PasswordHash.class.php
new file mode 100644
index 0000000..12958c7
--- /dev/null
+++ b/apps/um/ext/PasswordHash.class.php
@@ -0,0 +1,253 @@
+<?php
+#
+# Portable PHP password hashing framework.
+#
+# Version 0.3 / genuine.
+#
+# Written by Solar Designer <solar at openwall.com> in 2004-2006 and placed in
+# the public domain.  Revised in subsequent years, still public domain.
+#
+# There's absolutely no warranty.
+#
+# The homepage URL for this framework is:
+#
+#	http://www.openwall.com/phpass/
+#
+# Please be sure to update the Version line if you edit this file in any way.
+# It is suggested that you leave the main version number intact, but indicate
+# your project name (after the slash) and add your own revision information.
+#
+# Please do not change the "private" password hashing method implemented in
+# here, thereby making your hashes incompatible.  However, if you must, please
+# change the hash type identifier (the "$P$") to something different.
+#
+# Obviously, since this code is in the public domain, the above are not
+# requirements (there can be none), but merely suggestions.
+#
+class PasswordHash {
+	var $itoa64;
+	var $iteration_count_log2;
+	var $portable_hashes;
+	var $random_state;
+
+	function PasswordHash($iteration_count_log2, $portable_hashes)
+	{
+		$this->itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
+
+		if ($iteration_count_log2 < 4 || $iteration_count_log2 > 31)
+			$iteration_count_log2 = 8;
+		$this->iteration_count_log2 = $iteration_count_log2;
+
+		$this->portable_hashes = $portable_hashes;
+
+		$this->random_state = microtime();
+		if (function_exists('getmypid'))
+			$this->random_state .= getmypid();
+	}
+
+	function get_random_bytes($count)
+	{
+		$output = '';
+		if (is_readable('/dev/urandom') &&
+		    ($fh = @fopen('/dev/urandom', 'rb'))) {
+			$output = fread($fh, $count);
+			fclose($fh);
+		}
+
+		if (strlen($output) < $count) {
+			$output = '';
+			for ($i = 0; $i < $count; $i += 16) {
+				$this->random_state =
+				    md5(microtime() . $this->random_state);
+				$output .=
+				    pack('H*', md5($this->random_state));
+			}
+			$output = substr($output, 0, $count);
+		}
+
+		return $output;
+	}
+
+	function encode64($input, $count)
+	{
+		$output = '';
+		$i = 0;
+		do {
+			$value = ord($input[$i++]);
+			$output .= $this->itoa64[$value & 0x3f];
+			if ($i < $count)
+				$value |= ord($input[$i]) << 8;
+			$output .= $this->itoa64[($value >> 6) & 0x3f];
+			if ($i++ >= $count)
+				break;
+			if ($i < $count)
+				$value |= ord($input[$i]) << 16;
+			$output .= $this->itoa64[($value >> 12) & 0x3f];
+			if ($i++ >= $count)
+				break;
+			$output .= $this->itoa64[($value >> 18) & 0x3f];
+		} while ($i < $count);
+
+		return $output;
+	}
+
+	function gensalt_private($input)
+	{
+		$output = '$P$';
+		$output .= $this->itoa64[min($this->iteration_count_log2 +
+			((PHP_VERSION >= '5') ? 5 : 3), 30)];
+		$output .= $this->encode64($input, 6);
+
+		return $output;
+	}
+
+	function crypt_private($password, $setting)
+	{
+		$output = '*0';
+		if (substr($setting, 0, 2) == $output)
+			$output = '*1';
+
+		$id = substr($setting, 0, 3);
+		# We use "$P$", phpBB3 uses "$H$" for the same thing
+		if ($id != '$P$' && $id != '$H$')
+			return $output;
+
+		$count_log2 = strpos($this->itoa64, $setting[3]);
+		if ($count_log2 < 7 || $count_log2 > 30)
+			return $output;
+
+		$count = 1 << $count_log2;
+
+		$salt = substr($setting, 4, 8);
+		if (strlen($salt) != 8)
+			return $output;
+
+		# We're kind of forced to use MD5 here since it's the only
+		# cryptographic primitive available in all versions of PHP
+		# currently in use.  To implement our own low-level crypto
+		# in PHP would result in much worse performance and
+		# consequently in lower iteration counts and hashes that are
+		# quicker to crack (by non-PHP code).
+		if (PHP_VERSION >= '5') {
+			$hash = md5($salt . $password, TRUE);
+			do {
+				$hash = md5($hash . $password, TRUE);
+			} while (--$count);
+		} else {
+			$hash = pack('H*', md5($salt . $password));
+			do {
+				$hash = pack('H*', md5($hash . $password));
+			} while (--$count);
+		}
+
+		$output = substr($setting, 0, 12);
+		$output .= $this->encode64($hash, 16);
+
+		return $output;
+	}
+
+	function gensalt_extended($input)
+	{
+		$count_log2 = min($this->iteration_count_log2 + 8, 24);
+		# This should be odd to not reveal weak DES keys, and the
+		# maximum valid value is (2**24 - 1) which is odd anyway.
+		$count = (1 << $count_log2) - 1;
+
+		$output = '_';
+		$output .= $this->itoa64[$count & 0x3f];
+		$output .= $this->itoa64[($count >> 6) & 0x3f];
+		$output .= $this->itoa64[($count >> 12) & 0x3f];
+		$output .= $this->itoa64[($count >> 18) & 0x3f];
+
+		$output .= $this->encode64($input, 3);
+
+		return $output;
+	}
+
+	function gensalt_blowfish($input)
+	{
+		# This one needs to use a different order of characters and a
+		# different encoding scheme from the one in encode64() above.
+		# We care because the last character in our encoded string will
+		# only represent 2 bits.  While two known implementations of
+		# bcrypt will happily accept and correct a salt string which
+		# has the 4 unused bits set to non-zero, we do not want to take
+		# chances and we also do not want to waste an additional byte
+		# of entropy.
+		$itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+
+		$output = '$2a$';
+		$output .= chr(ord('0') + $this->iteration_count_log2 / 10);
+		$output .= chr(ord('0') + $this->iteration_count_log2 % 10);
+		$output .= '$';
+
+		$i = 0;
+		do {
+			$c1 = ord($input[$i++]);
+			$output .= $itoa64[$c1 >> 2];
+			$c1 = ($c1 & 0x03) << 4;
+			if ($i >= 16) {
+				$output .= $itoa64[$c1];
+				break;
+			}
+
+			$c2 = ord($input[$i++]);
+			$c1 |= $c2 >> 4;
+			$output .= $itoa64[$c1];
+			$c1 = ($c2 & 0x0f) << 2;
+
+			$c2 = ord($input[$i++]);
+			$c1 |= $c2 >> 6;
+			$output .= $itoa64[$c1];
+			$output .= $itoa64[$c2 & 0x3f];
+		} while (1);
+
+		return $output;
+	}
+
+	function HashPassword($password)
+	{
+		$random = '';
+
+		if (CRYPT_BLOWFISH == 1 && !$this->portable_hashes) {
+			$random = $this->get_random_bytes(16);
+			$hash =
+			    crypt($password, $this->gensalt_blowfish($random));
+			if (strlen($hash) == 60)
+				return $hash;
+		}
+
+		if (CRYPT_EXT_DES == 1 && !$this->portable_hashes) {
+			if (strlen($random) < 3)
+				$random = $this->get_random_bytes(3);
+			$hash =
+			    crypt($password, $this->gensalt_extended($random));
+			if (strlen($hash) == 20)
+				return $hash;
+		}
+
+		if (strlen($random) < 6)
+			$random = $this->get_random_bytes(6);
+		$hash =
+		    $this->crypt_private($password,
+		    $this->gensalt_private($random));
+		if (strlen($hash) == 34)
+			return $hash;
+
+		# Returning '*' on error is safe here, but would _not_ be safe
+		# in a crypt(3)-like function used _both_ for generating new
+		# hashes and for validating passwords against existing hashes.
+		return '*';
+	}
+
+	function CheckPassword($password, $stored_hash)
+	{
+		$hash = $this->crypt_private($password, $stored_hash);
+		if ($hash[0] == '*')
+			$hash = crypt($password, $stored_hash);
+
+		return $hash == $stored_hash;
+	}
+}
+
+?>
diff --git a/apps/um/ext/README.txt b/apps/um/ext/README.txt
new file mode 100644
index 0000000..78c4f70
--- /dev/null
+++ b/apps/um/ext/README.txt
@@ -0,0 +1,12 @@
+These are class files that I've gathered from around the internet.
+
+I've renamed the files to follow a standard scheme.
+
+This is where each file came from:
+
+My Name                : Original Name    : From
+PasswordHash.class.php : PasswordHash.php : http://www.openwall.com/phpass/
+recaptchalib.php       : recaptchalib.php : https://code.google.com/p/recaptcha/
+
+~ Luke Shumaker <http://lukeshu.ath.cx>
+Happy Hacking!
diff --git a/apps/um/ext/recaptchalib.php b/apps/um/ext/recaptchalib.php
new file mode 100644
index 0000000..32c4f4d
--- /dev/null
+++ b/apps/um/ext/recaptchalib.php
@@ -0,0 +1,277 @@
+<?php
+/*
+ * This is a PHP library that handles calling reCAPTCHA.
+ *    - Documentation and latest version
+ *          http://recaptcha.net/plugins/php/
+ *    - Get a reCAPTCHA API Key
+ *          https://www.google.com/recaptcha/admin/create
+ *    - Discussion group
+ *          http://groups.google.com/group/recaptcha
+ *
+ * Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
+ * AUTHORS:
+ *   Mike Crawford
+ *   Ben Maurer
+ *
+ * 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.
+ */
+
+/**
+ * The reCAPTCHA server URL's
+ */
+define("RECAPTCHA_API_SERVER", "http://www.google.com/recaptcha/api");
+define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
+define("RECAPTCHA_VERIFY_SERVER", "www.google.com");
+
+/**
+ * Encodes the given data into a query string format
+ * @param $data - array of string elements to be encoded
+ * @return string - encoded request
+ */
+function _recaptcha_qsencode ($data) {
+        $req = "";
+        foreach ( $data as $key => $value )
+                $req .= $key . '=' . urlencode( stripslashes($value) ) . '&';
+
+        // Cut the last '&'
+        $req=substr($req,0,strlen($req)-1);
+        return $req;
+}
+
+
+
+/**
+ * Submits an HTTP POST to a reCAPTCHA server
+ * @param string $host
+ * @param string $path
+ * @param array $data
+ * @param int port
+ * @return array response
+ */
+function _recaptcha_http_post($host, $path, $data, $port = 80) {
+
+        $req = _recaptcha_qsencode ($data);
+
+        $http_request  = "POST $path HTTP/1.0\r\n";
+        $http_request .= "Host: $host\r\n";
+        $http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n";
+        $http_request .= "Content-Length: " . strlen($req) . "\r\n";
+        $http_request .= "User-Agent: reCAPTCHA/PHP\r\n";
+        $http_request .= "\r\n";
+        $http_request .= $req;
+
+        $response = '';
+        if( false == ( $fs = @fsockopen($host, $port, $errno, $errstr, 10) ) ) {
+                die ('Could not open socket');
+        }
+
+        fwrite($fs, $http_request);
+
+        while ( !feof($fs) )
+                $response .= fgets($fs, 1160); // One TCP-IP packet
+        fclose($fs);
+        $response = explode("\r\n\r\n", $response, 2);
+
+        return $response;
+}
+
+
+
+/**
+ * Gets the challenge HTML (javascript and non-javascript version).
+ * This is called from the browser, and the resulting reCAPTCHA HTML widget
+ * is embedded within the HTML form it was called from.
+ * @param string $pubkey A public key for reCAPTCHA
+ * @param string $error The error given by reCAPTCHA (optional, default is null)
+ * @param boolean $use_ssl Should the request be made over ssl? (optional, default is false)
+
+ * @return string - The HTML to be embedded in the user's form.
+ */
+function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
+{
+	if ($pubkey == null || $pubkey == '') {
+		die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
+	}
+	
+	if ($use_ssl) {
+                $server = RECAPTCHA_API_SECURE_SERVER;
+        } else {
+                $server = RECAPTCHA_API_SERVER;
+        }
+
+        $errorpart = "";
+        if ($error) {
+           $errorpart = "&amp;error=" . $error;
+        }
+        return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>
+
+	<noscript>
+  		<iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
+  		<textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
+  		<input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
+	</noscript>';
+}
+
+
+
+
+/**
+ * A ReCaptchaResponse is returned from recaptcha_check_answer()
+ */
+class ReCaptchaResponse {
+        var $is_valid;
+        var $error;
+}
+
+
+/**
+  * Calls an HTTP POST function to verify if the user's guess was correct
+  * @param string $privkey
+  * @param string $remoteip
+  * @param string $challenge
+  * @param string $response
+  * @param array $extra_params an array of extra variables to post to the server
+  * @return ReCaptchaResponse
+  */
+function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
+{
+	if ($privkey == null || $privkey == '') {
+		die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
+	}
+
+	if ($remoteip == null || $remoteip == '') {
+		die ("For security reasons, you must pass the remote ip to reCAPTCHA");
+	}
+
+	
+	
+        //discard spam submissions
+        if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
+                $recaptcha_response = new ReCaptchaResponse();
+                $recaptcha_response->is_valid = false;
+                $recaptcha_response->error = 'incorrect-captcha-sol';
+                return $recaptcha_response;
+        }
+
+        $response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/recaptcha/api/verify",
+                                          array (
+                                                 'privatekey' => $privkey,
+                                                 'remoteip' => $remoteip,
+                                                 'challenge' => $challenge,
+                                                 'response' => $response
+                                                 ) + $extra_params
+                                          );
+
+        $answers = explode ("\n", $response [1]);
+        $recaptcha_response = new ReCaptchaResponse();
+
+        if (trim ($answers [0]) == 'true') {
+                $recaptcha_response->is_valid = true;
+        }
+        else {
+                $recaptcha_response->is_valid = false;
+                $recaptcha_response->error = $answers [1];
+        }
+        return $recaptcha_response;
+
+}
+
+/**
+ * gets a URL where the user can sign up for reCAPTCHA. If your application
+ * has a configuration page where you enter a key, you should provide a link
+ * using this function.
+ * @param string $domain The domain where the page is hosted
+ * @param string $appname The name of your application
+ */
+function recaptcha_get_signup_url ($domain = null, $appname = null) {
+	return "https://www.google.com/recaptcha/admin/create?" .  _recaptcha_qsencode (array ('domains' => $domain, 'app' => $appname));
+}
+
+function _recaptcha_aes_pad($val) {
+	$block_size = 16;
+	$numpad = $block_size - (strlen ($val) % $block_size);
+	return str_pad($val, strlen ($val) + $numpad, chr($numpad));
+}
+
+/* Mailhide related code */
+
+function _recaptcha_aes_encrypt($val,$ky) {
+	if (! function_exists ("mcrypt_encrypt")) {
+		die ("To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed.");
+	}
+	$mode=MCRYPT_MODE_CBC;   
+	$enc=MCRYPT_RIJNDAEL_128;
+	$val=_recaptcha_aes_pad($val);
+	return mcrypt_encrypt($enc, $ky, $val, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
+}
+
+
+function _recaptcha_mailhide_urlbase64 ($x) {
+	return strtr(base64_encode ($x), '+/', '-_');
+}
+
+/* gets the reCAPTCHA Mailhide url for a given email, public key and private key */
+function recaptcha_mailhide_url($pubkey, $privkey, $email) {
+	if ($pubkey == '' || $pubkey == null || $privkey == "" || $privkey == null) {
+		die ("To use reCAPTCHA Mailhide, you have to sign up for a public and private key, " .
+		     "you can do so at <a href='http://www.google.com/recaptcha/mailhide/apikey'>http://www.google.com/recaptcha/mailhide/apikey</a>");
+	}
+	
+
+	$ky = pack('H*', $privkey);
+	$cryptmail = _recaptcha_aes_encrypt ($email, $ky);
+	
+	return "http://www.google.com/recaptcha/mailhide/d?k=" . $pubkey . "&c=" . _recaptcha_mailhide_urlbase64 ($cryptmail);
+}
+
+/**
+ * gets the parts of the email to expose to the user.
+ * eg, given johndoe@example,com return ["john", "example.com"].
+ * the email is then displayed as john...@example.com
+ */
+function _recaptcha_mailhide_email_parts ($email) {
+	$arr = preg_split("/@/", $email );
+
+	if (strlen ($arr[0]) <= 4) {
+		$arr[0] = substr ($arr[0], 0, 1);
+	} else if (strlen ($arr[0]) <= 6) {
+		$arr[0] = substr ($arr[0], 0, 3);
+	} else {
+		$arr[0] = substr ($arr[0], 0, 4);
+	}
+	return $arr;
+}
+
+/**
+ * Gets html to display an email address given a public an private key.
+ * to get a key, go to:
+ *
+ * http://www.google.com/recaptcha/mailhide/apikey
+ */
+function recaptcha_mailhide_html($pubkey, $privkey, $email) {
+	$emailparts = _recaptcha_mailhide_email_parts ($email);
+	$url = recaptcha_mailhide_url ($pubkey, $privkey, $email);
+	
+	return htmlentities($emailparts[0]) . "<a href='" . htmlentities ($url) .
+		"' onclick=\"window.open('" . htmlentities ($url) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"Reveal this e-mail address\">...</a>@" . htmlentities ($emailparts [1]);
+
+}
+
+
+?>