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|
<?
class smtp_class {
var $host_name="";
var $host_port=25;
var $localhost="";
var $timeout=0;
var $error="";
var $debug=0;
var $esmtp=1;
var $esmtp_host="";
var $esmtp_extensions=array();
var $maximum_piped_recipients=100;
var $state="Disconnected";
var $connection=0;
var $pending_recipients=0;
Function OutputDebug($message) {
echo $message,"\n";
}
Function GetLine() {
for ($line="";;) {
if (feof($this->connection)) {
$this->error="reached the end of stream while reading from socket";
return(0);
}
if (($data=fgets($this->connection,100))==false) {
$this->error="it was not possible to read line from socket";
return(0);
}
$line.=$data;
$length=strlen($line);
if($length>=2 && substr($line,$length-2,2)=="\r\n") {
$line=substr($line,0,$length-2);
if($this->debug) {
$this->OutputDebug("< $line");
}
return($line);
}
}
}
Function PutLine($line) {
if($this->debug) {
$this->OutputDebug("> $line");
}
if(!fputs($this->connection,"$line\r\n")) {
$this->error="it was not possible to write line to socket";
return(0);
}
return(1);
}
Function PutData($data) {
if(strlen($data)) {
if($this->debug) {
$this->OutputDebug("> $data");
}
if(!fputs($this->connection,$data)) {
$this->error="it was not possible to write data to socket";
return(0);
}
}
return(1);
}
Function VerifyResultLines($code,$responses="") {
if(GetType($responses)!="array") {
$responses=array();
}
Unset($match_code);
while(($line=$this->GetLine($this->connection))) {
if(IsSet($match_code)) {
if(strcmp(strtok($line," -"),$match_code)) {
$this->error=$line;
return(0);
}
} else {
$match_code=strtok($line," -");
if(GetType($code)=="array") {
for($codes=0;$codes<count($code) && strcmp($match_code,$code[$codes]);$codes++);
if($codes>=count($code)) {
$this->error=$line;
return(0);
}
} else {
if(strcmp($match_code,$code)) {
$this->error=$line;
return(0);
}
}
}
$responses[]=strtok("");
if(!strcmp($match_code,strtok($line," "))) {
return(1);
}
}
return(-1);
}
Function FlushRecipients() {
if($this->pending_sender) {
if($this->VerifyResultLines("250")<=0) {
return(0);
}
$this->pending_sender=0;
}
for(;$this->pending_recipients;$this->pending_recipients--) {
if($this->VerifyResultLines(array("250","251"))<=0) {
return(0);
}
}
return(1);
}
# Public methods
Function Connect() {
$this->error=$error="";
$this->esmtp_host="";
$this->esmtp_extensions=array();
if(!($this->connection=($this->timeout ? fsockopen($this->host_name,$this->host_port,$errno,$error,$this->timeout) : fsockopen($this->host_name,$this->host_port)))) {
switch($error) {
case -3 : $this->error="-3 socket could not be created";
return(0);
case -4 : $this->error="-4 dns lookup on hostname \"".$host_name."\" failed";
return(0);
case -5 : $this->error="-5 connection refused or timed out";
return(0);
case -6 : $this->error="-6 fdopen() call failed";
return(0);
case -7 : $this->error="-7 setvbuf() call failed";
return(0);
default : $this->error=$error." could not connect to the host \"".$this->host_name."\"";
return(0);
}
} else {
if(!strcmp($localhost=$this->localhost,"") && !strcmp($localhost=getenv("SERVER_NAME"),"") && !strcmp($localhost=getenv("HOST"),"")) {
$localhost="localhost";
}
$success=0;
if($this->VerifyResultLines("220")>0) {
if($this->esmtp) {
$responses=array();
if($this->PutLine("EHLO $localhost") && $this->VerifyResultLines("250",$responses)>0) {
$this->esmtp_host=strtok($responses[0]," ");
for($response=1;$response<count($responses);$response++) {
$extension=strtoupper(strtok($responses[$response]," "));
$this->esmtp_extensions[$extension]=strtok("");
}
$success=1;
}
}
if(!$success && $this->PutLine("HELO $localhost") && $this->VerifyResultLines("250")>0) {
$success=1;
}
}
if($success) {
$this->state="Connected";
return(1);
} else {
fclose($this->connection);
$this->connection=0;
$this->state="Disconnected";
return(0);
}
}
}
Function MailFrom($sender) {
if(strcmp($this->state,"Connected")) {
$this->error="connection is not in the initial state";
return(0);
}
$this->error="";
if(!$this->PutLine("MAIL FROM:<$sender>")) {
return(0);
}
if(!IsSet($this->esmtp_extensions["PIPELINING"]) && $this->VerifyResultLines("250")<=0) {
return(0);
}
$this->state="SenderSet";
if(IsSet($this->esmtp_extensions["PIPELINING"])) {
$this->pending_sender=1;
}
$this->pending_recipients=0;
return(1);
}
Function SetRecipient($recipient) {
switch($this->state) {
case "SenderSet" :
case "RecipientSet" : break;
default : $this->error="connection is not in the recipient setting state";
return(0);
}
$this->error="";
if(!$this->PutLine("RCPT TO:<$recipient>")) {
return(0);
}
if(IsSet($this->esmtp_extensions["PIPELINING"])) {
$this->pending_recipients++;
if($this->pending_recipients>=$this->maximum_piped_recipients) {
if(!$this->FlushRecipients())
return(0);
}
} else {
if($this->VerifyResultLines(array("250","251"))<=0) {
return(0);
}
}
$this->state="RecipientSet";
return(1);
}
Function StartData() {
if(strcmp($this->state,"RecipientSet")) {
$this->error="connection is not in the start sending data state";
return(0);
}
$this->error="";
if(!$this->PutLine("DATA")) {
return(0);
}
if($this->pending_recipients) {
if(!$this->FlushRecipients()) {
return(0);
}
}
if($this->VerifyResultLines("354")<=0) {
return(0);
}
$this->state="SendingData";
return(1);
}
Function PrepareData($data,&$output) {
$length=strlen($data);
for($output="",$position=0;$position<$length;) {
$next_position=$length;
for($current=$position;$current<$length;$current++) {
switch($data[$current]) {
case "\n" : $next_position=$current+1;
break 2;
case "\r" : $next_position=$current+1;
if($data[$next_position]=="\n") {
$next_position++;
}
break 2;
}
}
if($data[$position]==".") {
$output.=".";
}
$output.=substr($data,$position,$current-$position)."\r\n";
$position=$next_position;
}
}
Function SendData($data) {
if(strcmp($this->state,"SendingData")) {
$this->error="connection is not in the sending data state";
return(0);
}
$this->error="";
return($this->PutData($data));
}
Function EndSendingData() {
if(strcmp($this->state,"SendingData")) {
$this->error="connection is not in the sending data state";
return(0);
}
$this->error="";
if(!$this->PutLine("\r\n.") || $this->VerifyResultLines("250")<=0) {
return(0);
}
$this->state="Connected";
return(1);
}
Function ResetConnection() {
switch($this->state) {
case "Connected" : return(1);
case "SendingData" : $this->error="can not reset the connection while sending data";
return(0);
case "Disconnected" : $this->error="can not reset the connection before it is established";
return(0);
}
$this->error="";
if(!$this->PutLine("RSET") || $this->VerifyResultLines("250")<=0) {
return(0);
}
$this->state="Connected";
return(1);
}
Function Disconnect($quit=1) {
if(!strcmp($this->state,"Disconnected")) {
$this->error="it was not previously established a SMTP connection";
return(0);
}
$this->error="";
if(!strcmp($this->state,"Connected") && $quit && (!$this->PutLine("QUIT") || $this->VerifyResultLines("221")<=0)) {
return(0);
}
fclose($this->connection);
$this->connection=0;
$this->state="Disconnected";
return(1);
}
Function SendMessage($sender,$recipients,$headers,$body) {
if(($success=$this->Connect())) {
if(($success=$this->MailFrom($sender))) {
for($recipient=0;$recipient<count($recipients);$recipient++) {
if(!($success=$this->SetRecipient($recipients[$recipient]))) {
break;
}
}
if($success && ($success=$this->StartData())) {
for($header_data="",$header=0;$header<count($headers);$header++) {
$header_data.=$headers[$header]."\r\n";
}
if(($success=$this->SendData($header_data."\r\n"))) {
$this->PrepareData($body,$body_data);
$success=$this->SendData($body_data);
}
if($success) {
$success=$this->EndSendingData();
}
}
}
$error=$this->error;
$disconnect_success=$this->Disconnect($success);
if($success) {
$success=$disconnect_success;
} else {
$this->error=$error;
}
}
return($success);
}
};
?> |
