add an email relay

[divinity76]

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[divinity76]

here's some code i wrote to send email through gmail for another project... (without the gmail api)

function gmail_email(string $username, string $password, string $to, string $subject, string $message, string $from = NULL): bool {
	if ($from === NULL) {
		$from = $username;
	}
	require_once ('hhb_.inc.php');
	$hc = new hhb_curl ();
	$hc->_setComfortableOptions ();
	$hc->setopt_array ( array (
			CURLOPT_CONNECTTIMEOUT => 10,
			CURLOPT_TIMEOUT => 20 
	) );
	$hc->setopt ( CURLOPT_HTTPHEADER, [ 
			'Accept-Language: en-US,en;q=0.5' 
	] );
	$hc->exec ( 'https://gmail.com/' );
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	$url = $domd->getElementById ( "gaia_loginform" )->getAttribute ( "action" );
	$inputs_raw = getDOMDocumentFormInputs ( $domd, true ) ['gaia_loginform'];
	$inputs = [ ];
	foreach ( $inputs_raw as $name => $ele ) {
		$inputs [$name] = $ele->getAttribute ( "value" );
	}
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getResponseBody () );
	unset ( $name, $ele, $inputs_raw, $domd );
	$inputs ['Email'] = $username;
	
	$hc->setopt_array ( array (
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => http_build_query ( $inputs ),
			CURLOPT_URL => $url 
	) );
	unset ( $inputs, $url );
	$hc->setopt ( CURLOPT_HTTPHEADER, [ 
			'Accept-Language: en-US,en;q=0.5' 
	] );
	$hc->exec ();
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	$inputs_raw = getDOMDocumentFormInputs ( $domd, true ) ['gaia_loginform'];
	$inputs = [ ];
	$url = $domd->getElementById ( "gaia_loginform" )->getAttribute ( "action" );
	foreach ( $inputs_raw as $name => $ele ) {
		$inputs [$name] = $ele->getAttribute ( "value" );
	}
	unset ( $name, $ele, $inputs_raw, $domd );
	$inputs ['Passwd'] = $password;
	$hc->setopt_array ( array (
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => http_build_query ( $inputs ),
			CURLOPT_URL => $url 
	) );
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getResponseBody () );
	$hc->setopt ( CURLOPT_HTTPHEADER, [ 
			'Accept-Language: en-US,en;q=0.5' 
	] );
	$hc->exec ();
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	foreach ( $domd->getElementsByTagName ( "form" ) as $form ) {
		// MAINTENANCE WARNING: ?ui=mobile&zyp=c
		// https://mail.google.com/mail/u/0/
		if ($form->getAttribute ( "action" ) !== '?ui=mobile&zyp=c') {
			$form->textContent = 'deleted';
			$form->parentNode->removeChild ( $form );
		}
	}
	$inputs_raw = getDOMDocumentFormInputs ( $domd, true ) [1];
	// hhb_var_dump($inputs_raw);die();
	$inputs = [ ];
	foreach ( $inputs_raw as $name => $ele ) {
		$inputs [$name] = $ele->getAttribute ( "value" );
	}
	$url = $domd->getElementsByTagName ( "form" )->item ( 1 )->getAttribute ( "action" );
	if (null === parse_url ( $url, PHP_URL_HOST )) {
		$url = $hc->getinfo ( CURLINFO_EFFECTIVE_URL ) . $url;
	}
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getResponseBody () );
	// die ();
	$hc->setopt_array ( array (
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => http_build_query ( $inputs ),
			CURLOPT_URL => $url 
	) );
	$hc->setopt ( CURLOPT_HTTPHEADER, [ 
			'Accept-Language: en-US,en;q=0.5' 
	] );
	$hc->exec ();
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getResponseBody () );
	// die ();
	$url = NULL;
	foreach ( $domd->getElementsByTagName ( "a" ) as $a ) {
		if ($a->textContent === 'Compose') {
			$url = $a->getAttribute ( "href" );
			if (null === parse_url ( $url, PHP_URL_HOST )) {
				$urlinfo = parse_url ( $hc->getinfo ( CURLINFO_EFFECTIVE_URL ) );
				// we actually just want to remove $urlinfo['query']...
				$url = $urlinfo ['scheme'] . '://' . $urlinfo ['host'] . $urlinfo ['path'] . $url;
			}
			break;
		}
	}
	// hhb_var_dump ( $url );
	// die ();
	$hc->setopt ( CURLOPT_HTTPGET, true );
	$hc->setopt ( CURLOPT_HTTPHEADER, [ 
			'Accept-Language: en-US,en;q=0.5' 
	] );
	$hc->exec ( $url );
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	$inputs_raw = getDOMDocumentFormInputs ( $domd, true ) ['cp'];
	$inputs = [ ];
	foreach ( $inputs_raw as $name => $ele ) {
		$inputs [$name] = $ele->getAttribute ( "value" );
	}
	// not sure how they're doing it, but they have inputs in the HTML that they manage not to send, even with javascript disabled...
	// heres a list of inputs to keep...
	$toKeep = array (
			'redir',
			'at',
			'from',
			'to',
			'subject',
			'body',
			'nvp_bu_send' 
	);
	foreach ( $inputs as $key => $unused ) {
		if (! in_array ( $key, $toKeep, true )) {
			unset ( $inputs [$key] );
		}
	}
	$inputs ['from'] = $from;
	$inputs ['to'] = $to;
	$inputs ['subject'] = $subject;
	$inputs ['body'] = $message;
	$url = $domd->getElementsByTagName ( "form" )->item ( 0 )->getAttribute ( "action" );
	if (null === parse_url ( $url, PHP_URL_HOST )) {
		$urlinfo = parse_url ( $hc->getinfo ( CURLINFO_EFFECTIVE_URL ) );
		// we actually just want to remove $urlinfo['query']...
		$url = $urlinfo ['scheme'] . '://' . $urlinfo ['host'] . $urlinfo ['path'] . $url;
	}
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getStdOut () );
	$hc->setopt_array ( array (
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => http_build_query ( $inputs ),
			CURLOPT_URL => $url 
	) );
	$hc->setopt ( CURLOPT_HTTPHEADER, [ 
			'Accept-Language: en-US,en;q=0.5' 
	] );
	$hc->exec ();
	$sentResponseBody = $hc->getResponseBody ();
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getStdOut () );
	$hc->setopt ( CURLOPT_HTTPHEADER, [ 
			'Accept-Language: en-US,en;q=0.5' 
	] );
	$hc->exec ( 'https://mail.google.com/mail/logout?hl=en-GB' ); // logout.
	if (false !== strpos ( preg_replace ( '/\s+/', '', $sentResponseBody ), 'Yourmessagehasbeensent' )) {
		return true;
	} else {
		return false;
	}
}

• and here's an older version, using a slightly different interface:

function gmail_email(string $username, string $password, string $to, string $subject, string $message, string $from = NULL): bool {
	if ($from === NULL) {
		$from = $username;
	}
	require_once ('hhb_.inc.php');
	$hc = new hhb_curl ();
	$hc->_setComfortableOptions ();
	$hc->setopt_array ( array (
			CURLOPT_CONNECTTIMEOUT => 10,
			CURLOPT_TIMEOUT => 20 
	) );
	$hc->exec ( 'https://gmail.com/' );
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	$url = $domd->getElementById ( "gaia_loginform" )->getAttribute ( "action" );
	$inputs_raw = getDOMDocumentFormInputs ( $domd, true ) ['gaia_loginform'];
	$inputs = [ ];
	foreach ( $inputs_raw as $name => $ele ) {
		$inputs [$name] = $ele->getAttribute ( "value" );
	}
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getResponseBody () );
	unset ( $name, $ele, $inputs_raw, $domd );
	$inputs ['Email'] = $username;
	
	$hc->setopt_array ( array (
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => http_build_query ( $inputs ),
			CURLOPT_URL => $url 
	) );
	unset ( $inputs, $url );
	$hc->exec ();
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	$inputs_raw = getDOMDocumentFormInputs ( $domd, true ) ['gaia_loginform'];
	$inputs = [ ];
	$url = $domd->getElementById ( "gaia_loginform" )->getAttribute ( "action" );
	foreach ( $inputs_raw as $name => $ele ) {
		$inputs [$name] = $ele->getAttribute ( "value" );
	}
	unset ( $name, $ele, $inputs_raw, $domd );
	$inputs ['Passwd'] = $password;
	$hc->setopt_array ( array (
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => http_build_query ( $inputs ),
			CURLOPT_URL => $url 
	) );
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getResponseBody () );
	$hc->exec ();
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	foreach ( $domd->getElementsByTagName ( "form" ) as $form ) {
		// MAINTENANCE WARNING: ?ui=html&zy=c
		// https://mail.google.com/mail/u/0/
		if ($form->getAttribute ( "action" ) !== '?ui=html&zy=c') {
			$form->parentNode->removeChild ( $form );
		}
	}
	$inputs_raw = getDOMDocumentFormInputs ( $domd, true ) [0];
	$inputs = [ ];
	foreach ( $inputs_raw as $name => $ele ) {
		$inputs [$name] = $ele->getAttribute ( "value" );
	}
	$url = $domd->getElementsByTagName ( "form" )->item ( 0 )->getAttribute ( "action" );
	if (null === parse_url ( $url, PHP_URL_HOST )) {
		$url = $hc->getinfo ( CURLINFO_EFFECTIVE_URL ) . $url;
	}
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getResponseBody () );
	$hc->setopt_array ( array (
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => http_build_query ( $inputs ),
			CURLOPT_URL => $url 
	) );
	$hc->exec ();
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	// hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getResponseBody () );
	$url = $hc->getinfo ( CURLINFO_EFFECTIVE_URL );
	$urlinfo = parse_url ( $url );
	// we actually just want to remove $urlinfo['query']...
	$url = $urlinfo ['scheme'] . '://' . $urlinfo ['host'] . $urlinfo ['path'];
	foreach ( $domd->getElementsByTagName ( "a" ) as $a ) {
		// INVESTIGATE ME: evil utf8 'Compose Mail' string? its not just the nbsp..
		if (bin2hex ( $a->textContent ) === '436f6d706f7365c2a04d61696c') {
			$url .= $a->getAttribute ( "href" );
			break;
		}
	}
	$hc->exec ( $url );
	$domd = @DOMDocument::loadHTML ( $hc->getResponseBody () );
	$inputs_raw = getDOMDocumentFormInputs ( $domd, true );
	unset ( $inputs_raw ['sbf'] );
	$inputs_raw = $inputs_raw ['f'];
	$inputs = [ ];
	foreach ( $inputs_raw as $name => $ele ) {
		$inputs [$name] = $ele->getAttribute ( "value" );
	}
	$url = NULL;
	foreach ( $domd->getElementsByTagName ( "form" ) as $form ) {
		if ($form->getAttribute ( "name" ) === 'f') {
			$url = $form->getAttribute ( "action" );
			break;
		}
	}
	if ($url === NULL) {
		throw new \RuntimeException ( 'failed to extract url!' );
	}
	if (null === parse_url ( $url, PHP_URL_HOST )) {
		$url = $hc->getinfo ( CURLINFO_EFFECTIVE_URL ) . $url;
	}
	// not sure how gmail does it, but gmail manages to drop a lot of input fields.. without javascript,
	// whilst still keeping them in the HTML source (as far as DOMDocument is concerned...)
	$toKeep = array (
			'redir',
			'at',
			'to',
			'cc',
			'bcc',
			'file0',
			'body',
			'nvp_bu_send' 
	);
	foreach ( $inputs as $key => $unused ) {
		if (! in_array ( $key, $toKeep, true )) {
			unset ( $inputs [$key] );
		}
	}
	$inputs ['to'] = $to;
	$inputs ['body'] = $message;
	$inputs ['subject'] = $subject;
	$input ['from'] = $from;
	$hc->setopt_array ( array (
			CURLOPT_POST => true,
			CURLOPT_POSTFIELDS => $inputs  // Note! use multipart/form-data here, gmail explicitly uses it in the html code, instead of the normal application/x-www-form-urlencoded
	) );
	$hc->exec ( $url );
	$sentResponseBody = $hc->getResponseBody ();
	//hhb_var_dump ( $url, $inputs, $hc->getStdErr (), $hc->getStdOut () );
	$hc->setopt ( CURLOPT_HTTPGET, true );
	$hc->exec ( 'https://mail.google.com/mail/logout?hl=en-GB' ); // logout.
	if (false !== strpos ( preg_replace ( '/\s+/', '', $sentResponseBody ), 'Yourmessagehasbeensent' )) {
		return true;
	} else {
		return false;
	}

}