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authorAndreas Baumann <mail@andreasbaumann.cc>2020-02-01 08:57:06 +0100
committerAndreas Baumann <mail@andreasbaumann.cc>2020-02-01 08:57:06 +0100
commitada3beb0a6c649bd9bfc6a87b2fe69ee8ae563f7 (patch)
treedf74b326c096fad4d74b90988caed727c15847ef /include/email.php
initial checkin
Diffstat (limited to 'include/email.php')
-rw-r--r--include/email.php364
1 files changed, 364 insertions, 0 deletions
diff --git a/include/email.php b/include/email.php
new file mode 100644
index 0000000..b66b584
--- /dev/null
+++ b/include/email.php
@@ -0,0 +1,364 @@
+<?php
+
+/**
+ * Copyright (C) 2008-2012 FluxBB
+ * based on code by Rickard Andersson copyright (C) 2002-2008 PunBB
+ * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher
+ */
+
+// Make sure no one attempts to run this script "directly"
+if (!defined('PUN'))
+ exit;
+
+// Define line breaks in mail headers; possible values can be PHP_EOL, "\r\n", "\n" or "\r"
+if (!defined('FORUM_EOL'))
+ define('FORUM_EOL', PHP_EOL);
+
+require PUN_ROOT.'include/utf8/utils/ascii.php';
+
+//
+// Validate an email address
+//
+function is_valid_email($email)
+{
+ if (strlen($email) > 80)
+ return false;
+
+ return preg_match('%^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|("[^"]+"))@((\[\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\])|(([a-zA-Z\d\-]+\.)+[a-zA-Z]{2,}))$%', $email);
+}
+
+
+//
+// Check if $email is banned
+//
+function is_banned_email($email)
+{
+ global $pun_bans;
+
+ foreach ($pun_bans as $cur_ban)
+ {
+ if ($cur_ban['email'] != '' &&
+ ($email == $cur_ban['email'] ||
+ (strpos($cur_ban['email'], '@') === false && stristr($email, '@'.$cur_ban['email']))))
+ return true;
+ }
+
+ return false;
+}
+
+
+//
+// Only encode with base64, if there is at least one unicode character in the string
+//
+function encode_mail_text($str)
+{
+ if (utf8_is_ascii($str))
+ return $str;
+
+ return '=?UTF-8?B?'.base64_encode($str).'?=';
+}
+
+
+//
+// Make a post email safe
+//
+function bbcode2email($text, $wrap_length = 72)
+{
+ static $base_url;
+
+ if (!isset($base_url))
+ $base_url = get_base_url();
+
+ $text = pun_trim($text, "\t\n ");
+
+ $shortcut_urls = array(
+ 'topic' => '/viewtopic.php?id=$1',
+ 'post' => '/viewtopic.php?pid=$1#p$1',
+ 'forum' => '/viewforum.php?id=$1',
+ 'user' => '/profile.php?id=$1',
+ );
+
+ // Split code blocks and text so BBcode in codeblocks won't be touched
+ list($code, $text) = extract_blocks($text, '[code]', '[/code]');
+
+ // Strip all bbcodes, except the quote, url, img, email, code and list items bbcodes
+ $text = preg_replace(array(
+ '%\[/?(?!(?:quote|url|topic|post|user|forum|img|email|code|list|\*))[a-z]+(?:=[^\]]+)?\]%i',
+ '%\n\[/?list(?:=[^\]]+)?\]%i' // A separate regex for the list tags to get rid of some whitespace
+ ), '', $text);
+
+ // Match the deepest nested bbcode
+ // An adapted example from Mastering Regular Expressions
+ $match_quote_regex = '%
+ \[(quote|\*|url|img|email|topic|post|user|forum)(?:=([^\]]+))?\]
+ (
+ (?>[^\[]*)
+ (?>
+ (?!\[/?\1(?:=[^\]]+)?\])
+ \[
+ [^\[]*
+ )*
+ )
+ \[/\1\]
+ %ix';
+
+ $url_index = 1;
+ $url_stack = array();
+ while (preg_match($match_quote_regex, $text, $matches))
+ {
+ // Quotes
+ if ($matches[1] == 'quote')
+ {
+ // Put '>' or '> ' at the start of a line
+ $replacement = preg_replace(
+ array('%^(?=\>)%m', '%^(?!\>)%m'),
+ array('>', '> '),
+ $matches[2].":\n".$matches[3]);
+ }
+
+ // List items
+ elseif ($matches[1] == '*')
+ {
+ $replacement = ' * '.$matches[3];
+ }
+
+ // URLs and emails
+ elseif (in_array($matches[1], array('url', 'email')))
+ {
+ if (!empty($matches[2]))
+ {
+ $replacement = '['.$matches[3].']['.$url_index.']';
+ $url_stack[$url_index] = $matches[2];
+ $url_index++;
+ }
+ else
+ $replacement = '['.$matches[3].']';
+ }
+
+ // Images
+ elseif ($matches[1] == 'img')
+ {
+ if (!empty($matches[2]))
+ $replacement = '['.$matches[2].']['.$url_index.']';
+ else
+ $replacement = '['.basename($matches[3]).']['.$url_index.']';
+
+ $url_stack[$url_index] = $matches[3];
+ $url_index++;
+ }
+
+ // Topic, post, forum and user URLs
+ elseif (in_array($matches[1], array('topic', 'post', 'forum', 'user')))
+ {
+ $url = isset($shortcut_urls[$matches[1]]) ? $base_url.$shortcut_urls[$matches[1]] : '';
+
+ if (!empty($matches[2]))
+ {
+ $replacement = '['.$matches[3].']['.$url_index.']';
+ $url_stack[$url_index] = str_replace('$1', $matches[2], $url);
+ $url_index++;
+ }
+ else
+ $replacement = '['.str_replace('$1', $matches[3], $url).']';
+ }
+
+ // Update the main text if there is a replacement
+ if (!is_null($replacement))
+ {
+ $text = str_replace($matches[0], $replacement, $text);
+ $replacement = null;
+ }
+ }
+
+ // Put code blocks and text together
+ if (isset($code))
+ {
+ $parts = explode("\1", $text);
+ $text = '';
+ foreach ($parts as $i => $part)
+ {
+ $text .= $part;
+ if (isset($code[$i]))
+ $text .= trim($code[$i], "\n\r");
+ }
+ }
+
+ // Put URLs at the bottom
+ if ($url_stack)
+ {
+ $text .= "\n\n";
+ foreach ($url_stack as $i => $url)
+ $text .= "\n".' ['.$i.']: '.$url;
+ }
+
+ // Wrap lines if $wrap_length is higher than -1
+ if ($wrap_length > -1)
+ {
+ // Split all lines and wrap them individually
+ $parts = explode("\n", $text);
+ foreach ($parts as $k => $part)
+ {
+ preg_match('%^(>+ )?(.*)%', $part, $matches);
+ $parts[$k] = wordwrap($matches[1].$matches[2], $wrap_length -
+ strlen($matches[1]), "\n".$matches[1]);
+ }
+
+ return implode("\n", $parts);
+ }
+ else
+ return $text;
+}
+
+
+//
+// Wrapper for PHP's mail()
+//
+function pun_mail($to, $subject, $message, $reply_to_email = '', $reply_to_name = '')
+{
+ global $pun_config, $lang_common;
+
+ // Use \r\n for SMTP servers, the system's line ending for local mailers
+ $smtp = $pun_config['o_smtp_host'] != '';
+ $EOL = $smtp ? "\r\n" : FORUM_EOL;
+
+ // Default sender/return address
+ $from_name = sprintf($lang_common['Mailer'], $pun_config['o_board_title']);
+ $from_email = $pun_config['o_webmaster_email'];
+
+ // Do a little spring cleaning
+ $to = pun_trim(preg_replace('%[\n\r]+%s', '', $to));
+ $subject = pun_trim(preg_replace('%[\n\r]+%s', '', $subject));
+ $from_email = pun_trim(preg_replace('%[\n\r:]+%s', '', $from_email));
+ $from_name = pun_trim(preg_replace('%[\n\r:]+%s', '', str_replace('"', '', $from_name)));
+ $reply_to_email = pun_trim(preg_replace('%[\n\r:]+%s', '', $reply_to_email));
+ $reply_to_name = pun_trim(preg_replace('%[\n\r:]+%s', '', str_replace('"', '', $reply_to_name)));
+
+ // Set up some headers to take advantage of UTF-8
+ $from = '"'.encode_mail_text($from_name).'" <'.$from_email.'>';
+ $subject = encode_mail_text($subject);
+
+ $headers = 'From: '.$from.$EOL.'Date: '.gmdate('r').$EOL.'MIME-Version: 1.0'.$EOL.'Content-transfer-encoding: 8bit'.$EOL.'Content-type: text/plain; charset=utf-8'.$EOL.'X-Mailer: FluxBB Mailer';
+
+ // If we specified a reply-to email, we deal with it here
+ if (!empty($reply_to_email))
+ {
+ $reply_to = '"'.encode_mail_text($reply_to_name).'" <'.$reply_to_email.'>';
+
+ $headers .= $EOL.'Reply-To: '.$reply_to;
+ }
+
+ // Make sure all linebreaks are LF in message (and strip out any NULL bytes)
+ $message = str_replace("\0", '', pun_linebreaks($message));
+ $message = str_replace("\n", $EOL, $message);
+
+ $mailer = $smtp ? 'smtp_mail' : 'mail';
+ $mailer($to, $subject, $message, $headers);
+}
+
+
+//
+// This function was originally a part of the phpBB Group forum software phpBB2 (http://www.phpbb.com)
+// They deserve all the credit for writing it. I made small modifications for it to suit PunBB and its coding standards
+//
+function server_parse($socket, $expected_response)
+{
+ $server_response = '';
+ while (substr($server_response, 3, 1) != ' ')
+ {
+ if (!($server_response = fgets($socket, 256)))
+ error('Couldn\'t get mail server response codes. Please contact the forum administrator.', __FILE__, __LINE__);
+ }
+
+ if (!(substr($server_response, 0, 3) == $expected_response))
+ error('Unable to send email. Please contact the forum administrator with the following error message reported by the SMTP server: "'.$server_response.'"', __FILE__, __LINE__);
+}
+
+
+//
+// This function was originally a part of the phpBB Group forum software phpBB2 (http://www.phpbb.com)
+// They deserve all the credit for writing it. I made small modifications for it to suit PunBB and its coding standards.
+//
+function smtp_mail($to, $subject, $message, $headers = '')
+{
+ global $pun_config;
+ static $local_host;
+
+ $recipients = explode(',', $to);
+
+ // Sanitize the message
+ $message = str_replace("\r\n.", "\r\n..", $message);
+ $message = (substr($message, 0, 1) == '.' ? '.'.$message : $message);
+
+ // Are we using port 25 or a custom port?
+ if (strpos($pun_config['o_smtp_host'], ':') !== false)
+ list($smtp_host, $smtp_port) = explode(':', $pun_config['o_smtp_host']);
+ else
+ {
+ $smtp_host = $pun_config['o_smtp_host'];
+ $smtp_port = 25;
+ }
+
+ if ($pun_config['o_smtp_ssl'] == '1')
+ $smtp_host = 'ssl://'.$smtp_host;
+
+ if (!($socket = fsockopen($smtp_host, $smtp_port, $errno, $errstr, 15)))
+ error('Could not connect to smtp host "'.$pun_config['o_smtp_host'].'" ('.$errno.') ('.$errstr.')', __FILE__, __LINE__);
+
+ server_parse($socket, '220');
+
+ if (!isset($local_host))
+ {
+ // Here we try to determine the *real* hostname (reverse DNS entry preferably)
+ $local_host = php_uname('n');
+
+ // Able to resolve name to IP
+ if (($local_addr = @gethostbyname($local_host)) !== $local_host)
+ {
+ // Able to resolve IP back to name
+ if (($local_name = @gethostbyaddr($local_addr)) !== $local_addr)
+ $local_host = $local_name;
+ }
+ }
+
+ if ($pun_config['o_smtp_user'] != '' && $pun_config['o_smtp_pass'] != '')
+ {
+ fwrite($socket, 'EHLO '.$local_host."\r\n");
+ server_parse($socket, '250');
+
+ fwrite($socket, 'AUTH LOGIN'."\r\n");
+ server_parse($socket, '334');
+
+ fwrite($socket, base64_encode($pun_config['o_smtp_user'])."\r\n");
+ server_parse($socket, '334');
+
+ fwrite($socket, base64_encode($pun_config['o_smtp_pass'])."\r\n");
+ server_parse($socket, '235');
+ }
+ else
+ {
+ fwrite($socket, 'HELO '.$local_host."\r\n");
+ server_parse($socket, '250');
+ }
+
+ fwrite($socket, 'MAIL FROM: <'.$pun_config['o_webmaster_email'].'>'."\r\n");
+ server_parse($socket, '250');
+
+ foreach ($recipients as $email)
+ {
+ fwrite($socket, 'RCPT TO: <'.$email.'>'."\r\n");
+ server_parse($socket, '250');
+ }
+
+ fwrite($socket, 'DATA'."\r\n");
+ server_parse($socket, '354');
+
+ fwrite($socket, 'Subject: '.$subject."\r\n".'To: <'.implode('>, <', $recipients).'>'."\r\n".$headers."\r\n\r\n".$message."\r\n");
+
+ fwrite($socket, '.'."\r\n");
+ server_parse($socket, '250');
+
+ fwrite($socket, 'QUIT'."\r\n");
+ fclose($socket);
+
+ return true;
+}