praiadeseselle/site/modules/.WireMailSmtp/smtp_classes/smtp_message.php

803 lines
25 KiB
PHP

<?php
/*
* smtp_message.php
*
* @(#) $Header: /opt2/ena/metal/mimemessage/smtp_message.php,v 1.36 2011/03/09 07:48:52 mlemos Exp $
*
*
*/
/**
* @horst, 19.04.2019:
* added support for: smtp_tls_crypto_method
*
*
*/
/*
{metadocument}<?xml version="1.0" encoding="ISO-8859-1"?>
<class>
<package>net.manuellemos.mimemessage</package>
<name>smtp_message_class</name>
<version>@(#) $Id: smtp_message.php,v 1.36 2011/03/09 07:48:52 mlemos Exp $</version>
<copyright>Copyright © (C) Manuel Lemos 1999-2004</copyright>
<title>MIME E-mail message composing and sending via SMTP</title>
<author>Manuel Lemos</author>
<authoraddress>mlemos-at-acm.org</authoraddress>
<documentation>
<idiom>en</idiom>
<purpose>Implement an alternative message delivery method via SMTP
protocol, overriding the method of using the PHP <tt>mail()</tt>
function implemented by the base class.</purpose>
<usage>This class should be used exactly the same way as the base
class for composing and sending messages. Just create a new object of
this class as follows and set only the necessary variables to
configure details of the SMTP delivery.<paragraphbreak />
<tt>require('email_message.php');<br />
require('smtp.php');<br />
require('smtp_message.php');<br />
<br />
$message_object = new smtp_message_class;<br /></tt><paragraphbreak />
<b>- Requirements</b><paragraphbreak />
You need the <link>
<data>SMTP E-mail sending class</data>
<url>http://freshmeat.net/projects/smtpclass/</url>
</link> to perform the actual message delivery via the SMTP
protocol.<paragraphbreak />
<b>- SMTP connection</b><paragraphbreak />
Before sending a message by relaying it to a given SMTP server you
need set the <variablelink>smtp_host</variablelink> variable to that
server address. The <variablelink>localhost</variablelink> variable
needs to be set to the sending computer address.<paragraphbreak />
You may also adjust the time the class will wait for establishing
a connection by changing the <variablelink>timeout</variablelink>
variable.<paragraphbreak />
<b>- Secure SMTP connections with SSL</b><paragraphbreak />
Some SMTP servers, like for instance Gmail, require secure
connections via SSL. In that case it is necessary to set the
<variablelink>smtp_ssl</variablelink> variable to
<booleanvalue>1</booleanvalue>. In the case of Gmail, it is also
necessary to set the connection port changing the
<variablelink>smtp_port</variablelink> variable to
<integervalue>465</integervalue>.<paragraphbreak />
SSL support requires at least PHP 4.3.0 with OpenSSL extension
enabled.<paragraphbreak />
<b>- Secure SMTP connections starting TLS after connections is established</b><paragraphbreak />
Some SMTP servers, like for instance Hotmail, require starting the
TLS protocol after the connection is already established to exchange
data securely. In that case it is necessary to set the
<variablelink>smtp_start_tls</variablelink> variable to
<booleanvalue>1</booleanvalue>.<paragraphbreak />
Starting TLS protocol on an already established connection requires
at least PHP 5.1.0 with OpenSSL extension enabled.<paragraphbreak />
<b>- Authentication</b><paragraphbreak />
Most servers only allow relaying messages sent by authorized
users. If the SMTP server that you want to use requires
authentication, you need to set the variables
<variablelink>smtp_user</variablelink>,
<variablelink>smtp_realm</variablelink> and
<variablelink>smtp_password</variablelink>.<paragraphbreak />
The way these values need to be set depends on the server. Usually
the realm value is empty and only the user and password need to be
set. If the server requires authentication via <tt>NTLM</tt>
mechanism (Windows or Samba), you need to set the
<variablelink>smtp_realm</variablelink> to the Windows domain name
and also set the variable
<variablelink>smtp_workstation</variablelink> to the user workstation
name.<paragraphbreak />
Some servers require that the authentication be done on a separate
server using the POP3 protocol before connecting to the SMTP server.
In this case you need to specify the address of the POP3 server
setting the <variablelink>smtp_pop3_auth_host</variablelink>
variable.<paragraphbreak />
<b>- Sending urgent messages with direct delivery</b><paragraphbreak />
If you need to send urgent messages or obtain immediate confirmation
that a message is accepted by the recipient SMTP server, you can use
the direct delivery mode setting the
<variablelink>direct_delivery</variablelink> variable to
<tt><booleanvalue>1</booleanvalue></tt>. This mode can be used to
send a message to only one recipient.<paragraphbreak />
To use this mode, it is necessary to have a way to determine the
recipient domain SMTP server address. The class uses the PHP
<tt>getmxrr()</tt> function, but on some systems like for instance
under Windows, this function does not work. In this case you may
specify an equivalent alternative by setting the
<variablelink>smtp_getmxrr</variablelink> variable. See the SMTP
class page for available alternatives.<paragraphbreak />
<b>- Troubleshooting and debugging</b><paragraphbreak />
If for some reason the delivery via SMTP is not working and the error
messages are not self-explanatory, you may set the
<variablelink>smtp_debug</variablelink> to
<tt><booleanvalue>1</booleanvalue></tt> to make the class output the
SMTP protocol dialog with the server. If you want to display this
dialog properly formatted in an HTML page, also set the
<variablelink>smtp_debug</variablelink> to
<tt><booleanvalue>1</booleanvalue></tt>.<paragraphbreak />
<b>- Optimizing the delivery of messages to many recipients</b><paragraphbreak />
When sending messages to many recipients, this class can hinted to
optimize its behavior by using the
<functionlink>SetBulkMail</functionlink> function. After calling this
function passing <booleanvalue>1</booleanvalue> to the <argumentlink>
<function>SetBulkMail</function>
<argument>on</argument>
</argumentlink> argument, when the message is sent this class opens
a TCP connection to the SMTP server but will not close it. This
avoids the overhead of opening and closing connections.<paragraphbreak />
When the delivery of the messages to all recipients is done, the
connection may be closed implicitly by calling the
<functionlink>SetBulkMail</functionlink> function again passing
<booleanvalue>0</booleanvalue> to the <argumentlink>
<function>SetBulkMail</function>
<argument>on</argument>
</argumentlink> argument.</usage>
</documentation>
{/metadocument}
*/
class smtp_message_class extends email_message_class
{
/* Private variables */
var $smtp;
var $line_break="\r\n";
var $delivery = 0;
/* Public variables */
/* Allow Self Signed Certificate */
var $smtp_certificate = 0; // @flydev: https://processwire.com/talk/topic/5704-wiremailsmtp/page-5#entry113290
/* @horst: Allow Connections without Authentication */
var $allow_without_authentication = 0;
/* @horst: Allow to define the crypto method for TLS connections */
var $smtp_tls_crypto_method = '';
/* @horst: Allow to define the crypto method for SSL connections */
var $smtp_ssl_crypto_method = '';
/*
{metadocument}
<variable>
<name>localhost</name>
<value></value>
<documentation>
<purpose>Specify the domain name of the computer sending the
message.</purpose>
<usage>This value is used to identify the sending machine to the
SMTP server. When using the direct delivery mode, if this variable
is set to a non-empty string it used to generate the
<tt>Recieved</tt> header to show that the message passed by the
specified host address. To prevent confusing directly delivered
messages with spam, it is strongly recommended that you set this
variable to you server host name.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $localhost="";
/*
{metadocument}
<variable>
<name>smtp_host</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify the address of the SMTP server.</purpose>
<usage>Set to the address of the SMTP server that will relay the
messages. This variable is not used in direct delivery mode.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_host="localhost";
/*
{metadocument}
<variable>
<name>smtp_port</name>
<type>INTEGER</type>
<value>25</value>
<documentation>
<purpose>Specify the TCP/IP port of SMTP server to connect.</purpose>
<usage>Most servers work on port 25 . Certain e-mail services use
alternative ports to avoid firewall blocking. Gmail uses port
<integervalue>465</integervalue>.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_port=25;
/*
{metadocument}
<variable>
<name>smtp_ssl</name>
<type>BOOLEAN</type>
<value>0</value>
<documentation>
<purpose>Specify whether it should use secure connections with SSL
to connect to the SMTP server.</purpose>
<usage>Certain e-mail services like Gmail require SSL connections.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_ssl=0;
/*
{metadocument}
<variable>
<name>smtp_start_tls</name>
<type>BOOLEAN</type>
<value>0</value>
<documentation>
<purpose>Specify whether it should use secure connections starting
TLS protocol after connecting to the SMTP server.</purpose>
<usage>Certain e-mail services like Hotmail require starting TLS
protocol after the connection to the SMTP server is already
established.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_start_tls=0;
/*
{metadocument}
<variable>
<name>smtp_http_proxy_host_name</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify name of the host when the connection should be
routed via an HTTP proxy.</purpose>
<usage>Leave empty if no proxy should be used.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_http_proxy_host_name='';
/*
{metadocument}
<variable>
<name>smtp_http_proxy_host_port</name>
<type>INTEGER</type>
<value>3128</value>
<documentation>
<purpose>Specify proxy port when the connection should be routed via
an HTTP proxy.</purpose>
<usage>Change this variable if you need to use a proxy with a
specific port.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_http_proxy_host_port=3128;
/*
{metadocument}
<variable>
<name>smtp_socks_host_name</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify name of the host when the connection should be
routed via a SOCKS protocol proxy.</purpose>
<usage>Leave empty if no proxy should be used.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_socks_host_name = '';
/*
{metadocument}
<variable>
<name>smtp_socks_host_port</name>
<type>INTEGER</type>
<value>1080</value>
<documentation>
<purpose>Specify proxy port when the connection should be routed via
a SOCKS protocol proxy.</purpose>
<usage>Change this variable if you need to use a proxy with a
specific port.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_socks_host_port = 1080;
/*
{metadocument}
<variable>
<name>smtp_socks_version</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify protocol version when the connection should be
routed via a SOCKS protocol proxy.</purpose>
<usage>Change this variable if you need to use a proxy with a
specific SOCKS protocol version.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_socks_version = '5';
/*
{metadocument}
<variable>
<name>smtp_direct_delivery</name>
<type>BOOLEAN</type>
<value>0</value>
<documentation>
<purpose>Boolean flag that indicates whether the message should be
sent in direct delivery mode.</purpose>
<usage>Set this to <tt><booleanvalue>1</booleanvalue></tt> if you
want to send urgent messages directly to the recipient domain SMTP
server.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_direct_delivery=0;
/*
{metadocument}
<variable>
<name>smtp_getmxrr</name>
<type>STRING</type>
<value>getmxrr</value>
<documentation>
<purpose>Specify the name of the function that is called to determine
the SMTP server address of a given domain.</purpose>
<usage>Change this to a working replacement of the PHP
<tt>getmxrr()</tt> function if this is not working in your system
and you want to send messages in direct delivery mode.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_getmxrr="getmxrr";
/*
{metadocument}
<variable>
<name>smtp_exclude_address</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify an address that should be considered invalid
when resolving host name addresses.</purpose>
<usage>In some networks any domain name that does not exist is
resolved as a sub-domain of the default local domain. If the DNS is
configured in such way that it always resolves any sub-domain of
the default local domain to a given address, it is hard to
determine whether a given domain does not exist.<paragraphbreak />
If your network is configured this way, you may set this variable
to the address that all sub-domains of the default local domain
resolves, so the class can assume that such address is invalid.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_exclude_address="";
/*
{metadocument}
<variable>
<name>smtp_user</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify the user name for authentication.</purpose>
<usage>Set this variable if you need to authenticate before sending
a message.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_user="";
/*
{metadocument}
<variable>
<name>smtp_realm</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify the user authentication realm.</purpose>
<usage>Set this variable if you need to authenticate before sending
a message.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_realm="";
/*
{metadocument}
<variable>
<name>smtp_workstation</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify the user authentication workstation needed when
using the <tt>NTLM</tt> authentication (Windows or Samba).</purpose>
<usage>Set this variable if you need to authenticate before sending
a message.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_workstation="";
/*
{metadocument}
<variable>
<name>smtp_authentication_mechanism</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify the user authentication mechanism that should be
used when authenticating with the SMTP server.</purpose>
<usage>Set this variable if you need to force the SMTP connection to
authenticate with a specific authentication mechanism. Leave this
variable with an empty string if you want the authentication
mechanism be determined automatically from the list of mechanisms
supported by the server.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_authentication_mechanism="";
/*
{metadocument}
<variable>
<name>smtp_password</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify the user authentication password.</purpose>
<usage>Set this variable if you need to authenticate before sending
a message.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_password="";
/*
{metadocument}
<variable>
<name>smtp_pop3_auth_host</name>
<type>STRING</type>
<value></value>
<documentation>
<purpose>Specify the server address for POP3 based authentication.</purpose>
<usage>Set this variable to the address of the POP3 server if the
SMTP server requires POP3 based authentication.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_pop3_auth_host="";
/*
{metadocument}
<variable>
<name>smtp_debug</name>
<type>BOOLEAN</type>
<value>0</value>
<documentation>
<purpose>Specify whether it is necessary to output SMTP connection
debug information.</purpose>
<usage>Set this variable to
<tt><booleanvalue>1</booleanvalue></tt> if you need to see
the progress of the SMTP connection and protocol dialog when you
need to understand the reason for delivery problems.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_debug=0;
/*
{metadocument}
<variable>
<name>smtp_html_debug</name>
<type>BOOLEAN</type>
<value>0</value>
<documentation>
<purpose>Specify whether the debug information should be outputted in
HTML format.</purpose>
<usage>Set this variable to
<tt><booleanvalue>1</booleanvalue></tt> if you need to see
the debug output in a Web page.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $smtp_html_debug=0;
/*
{metadocument}
<variable>
<name>esmtp</name>
<type>BOOLEAN</type>
<value>1</value>
<documentation>
<purpose>Specify whether the class should try to use Enhanced SMTP
protocol features.</purpose>
<usage>It is recommended to leave this variable set to
<tt><booleanvalue>1</booleanvalue></tt> so the class can take
advantage of Enhanced SMTP protocol features.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $esmtp=1;
/*
{metadocument}
<variable>
<name>timeout</name>
<type>INTEGER</type>
<value>25</value>
<documentation>
<purpose>Specify the connection timeout period in seconds.</purpose>
<usage>Change this value if for some reason the timeout period seems
insufficient or otherwise it seems too long.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $timeout=25;
/*
{metadocument}
<variable>
<name>invalid_recipients</name>
<type>ARRAY</type>
<value></value>
<documentation>
<purpose>Return the list of recipient addresses that were not
accepted by the SMTP server.</purpose>
<usage>Check this variable after attempting to send a message to
figure whether there were any recipients that were rejected by the
SMTP server.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $invalid_recipients=array();
/*
{metadocument}
<variable>
<name>mailer_delivery</name>
<value>smtp $Revision: 1.36 $</value>
<documentation>
<purpose>Specify the text that is used to identify the mail
delivery class or sub-class. This text is appended to the
<tt>X-Mailer</tt> header text defined by the
mailer variable.</purpose>
<usage>Do not change this variable.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $mailer_delivery='smtp $Revision: 1.36 $';
/*
{metadocument}
<variable>
<name>maximum_bulk_deliveries</name>
<type>INTEGER</type>
<value>100</value>
<documentation>
<purpose>Specify the number of consecutive bulk mail deliveries
without disconnecting.</purpose>
<usage>Lower this value if you have enabled the bulk mail mode but
the SMTP server does not accept sending more than a number of
messages within the same SMTP connection.<paragraphbreak />
Set this value to <integervalue>0</integervalue> to never
disconnect during bulk mail mode unless an error occurs.</usage>
</documentation>
</variable>
{/metadocument}
*/
var $maximum_bulk_deliveries=100;
Function SetRecipients(&$recipients,&$valid_recipients)
{
for($valid_recipients=$recipient=0,Reset($recipients);$recipient<count($recipients);Next($recipients),$recipient++)
{
$address=Key($recipients);
if($this->smtp->SetRecipient($address))
$valid_recipients++;
else
$this->invalid_recipients[$address]=$this->smtp->error;
}
return(1);
}
Function ResetConnection($error)
{
if(IsSet($this->smtp))
{
if(!$this->smtp->Disconnect()
&& strlen($error) == 0)
$error = $this->smtp->error;
UnSet($this->smtp);
}
if(strlen($error))
$this->OutputError($error);
return($error);
}
Function StartSendingMessage()
{
if(function_exists("class_exists")
&& !class_exists("smtp_class"))
return("the smtp_class class was not included");
if(IsSet($this->smtp))
return("");
$this->smtp=new smtp_class;
$this->smtp->localhost=$this->localhost;
$this->smtp->host_name=$this->smtp_host;
$this->smtp->host_port=$this->smtp_port;
$this->smtp->ssl=$this->smtp_ssl;
$this->smtp->smtp_ssl_crypto_method=$this->smtp_ssl_crypto_method; // @horst
$this->smtp->start_tls=$this->smtp_start_tls;
$this->smtp->smtp_tls_crypto_method=$this->smtp_tls_crypto_method; // @horst
$this->smtp->http_proxy_host_name=$this->smtp_http_proxy_host_name;
$this->smtp->http_proxy_host_port=$this->smtp_http_proxy_host_port;
$this->smtp->socks_host_name=$this->smtp_socks_host_name;
$this->smtp->socks_host_port=$this->smtp_socks_host_port;
$this->smtp->socks_version=$this->smtp_socks_version;
$this->smtp->timeout=$this->timeout;
$this->smtp->debug=$this->smtp_debug;
$this->smtp->html_debug=$this->smtp_html_debug;
$this->smtp->direct_delivery=$this->smtp_direct_delivery;
$this->smtp->getmxrr=$this->smtp_getmxrr;
$this->smtp->exclude_address=$this->smtp_exclude_address;
$this->smtp->pop3_auth_host=$this->smtp_pop3_auth_host;
$this->smtp->user=$this->smtp_user;
$this->smtp->realm=$this->smtp_realm;
$this->smtp->workstation=$this->smtp_workstation;
$this->smtp->authentication_mechanism=$this->smtp_authentication_mechanism;
$this->smtp->password=$this->smtp_password;
$this->smtp->esmtp=$this->esmtp;
$this->smtp->smtp_certificate = $this->smtp_certificate; // @flydev: https://processwire.com/talk/topic/5704-wiremailsmtp/page-5#entry113290
$this->smtp->allow_without_authentication = $this->allow_without_authentication; // @horst
if($this->smtp->Connect())
{
$this->delivery = 0;
return("");
}
return($this->ResetConnection($this->smtp->error));
}
Function SendMessageHeaders($headers)
{
$header_data="";
$date=date("D, d M Y H:i:s T");
if($this->smtp_direct_delivery
&& strlen($this->localhost))
{
$local_ip=gethostbyname($this->localhost);
$header_data.=$this->FormatHeader("Received","FROM ".$this->localhost." ([".$local_ip."]) BY ".$this->localhost." ([".$local_ip."]) WITH SMTP; ".$date)."\r\n";
}
for($message_id_set=$date_set=0,$header=0,$return_path=$from=$to=$recipients=array(),Reset($headers);$header<count($headers);$header++,Next($headers))
{
$header_name=Key($headers);
switch(strtolower($header_name))
{
case "return-path":
$return_path[$headers[$header_name]]=1;
break;
case "from":
$error=$this->GetRFC822Addresses($headers[$header_name],$from);
break;
case "to":
$error=$this->GetRFC822Addresses($headers[$header_name],$to);
break;
case "cc":
case "bcc":
$this->GetRFC822Addresses($headers[$header_name],$recipients);
break;
case "date":
$date_set=1;
break;
case "message-id":
$message_id_set=1;
break;
}
if(strcmp($error,""))
return($this->ResetConnection($error));
if(strtolower($header_name)=="bcc")
continue;
$header_data.=$this->FormatHeader($header_name,$headers[$header_name])."\r\n";
}
if(count($from)==0)
return($this->ResetConnection("it was not specified a valid From header"));
Reset($return_path);
Reset($from);
$this->invalid_recipients=array();
if(!$this->smtp->MailFrom(count($return_path) ? Key($return_path) : Key($from)))
return($this->ResetConnection($this->smtp->error));
$r = 0;
if(count($to))
{
if(!$this->SetRecipients($to,$valid_recipients))
return($this->ResetConnection($this->smtp->error));
$r += $valid_recipients;
}
if(!$date_set)
$header_data.="Date: ".$date."\r\n";
if(!$message_id_set
&& $this->auto_message_id)
{
$sender=(count($return_path) ? Key($return_path) : Key($from));
$header_data.=$this->GenerateMessageID($sender)."\r\n";
}
if(count($recipients))
{
if(!$this->SetRecipients($recipients,$valid_recipients))
return($this->ResetConnection($this->smtp->error));
$r += $valid_recipients;
}
if($r==0)
return($this->ResetConnection("it were not specified any valid recipients"));
if(!$this->smtp->StartData()
|| !$this->smtp->SendData($header_data."\r\n"))
return($this->ResetConnection($this->smtp->error));
return("");
}
Function SendMessageBody($data)
{
return($this->smtp->SendData($this->smtp->PrepareData($data)) ? "" : $this->ResetConnection($this->smtp->error));
}
Function EndSendingMessage()
{
return($this->smtp->EndSendingData() ? "" : $this->ResetConnection($this->smtp->error));
}
Function StopSendingMessage()
{
++$this->delivery;
if($this->bulk_mail
&& !$this->smtp_direct_delivery
&& ($this->maximum_bulk_deliveries == 0
|| $this->delivery < $this->maximum_bulk_deliveries))
return("");
return($this->ResetConnection(''));
}
Function ChangeBulkMail($on)
{
if($on
|| !IsSet($this->smtp))
return(1);
return($this->smtp->Disconnect() ? "" : $this->ResetConnection($this->smtp->error));
}
};
/*
{metadocument}
</class>
{/metadocument}
*/
?>