cacert-webdb/www/gpg.php

<? /*
    Copyright (C) 2004 by Duane Groth <duane_at_CAcert_dot_org>

    This file is part of CAcert.

    CAcert has been released under the CAcert Source License
    which can be found included with these source files or can
    be downloaded from the internet from the following address:
    http://www.cacert.org/src-lic.php

    CAcert is distributed WITHOUT ANY WARRANTY; without even
    the implied warranty of MERCHANTABILITY or FITNESS FOR A
    PARTICULAR PURPOSE.  See the License for more details.
*/ ?>
<?
	require_once("../includes/loggedin.php");

        $id = intval($_REQUEST['id']);
        $oldid = $_REQUEST['oldid'] = intval($_REQUEST['oldid']);

	if($_SESSION['profile']['points'] < 50)
	{
		header("location: /account.php");
		exit;
	}

	loadem("account");






	if($oldid == "0")
	{
		if($_REQUEST['process'] == _("Submit") && $_REQUEST['CSR'] == "")
		{
			$_SESSION['_config']['errmsg'] = _("You failed to paste a valid GPG/PGP key.");
			$id = $oldid;
			unset($oldid);
		}
	}

	$keyid="";

if(0)
{
  if($_SESSION["profile"]["id"] != 5897)
  {
    showheader(_("Welcome to CAcert.org"));
    echo "The OpenPGP signing system is currently shutdown due to a maintenance. We hope to get it fixed within the next few hours. We are very sorry for the inconvenience.";
  
    exit(0);
  }
}


function verifyName($name)
{
	if($name == "") return 0;
	if($name == $_SESSION['profile']['fname']." ".$_SESSION['profile']['lname']) return 1;
	if($name == $_SESSION['profile']['fname']." ".$_SESSION['profile']['mname']." ".$_SESSION['profile']['lname']) return 1;
	if($name == $_SESSION['profile']['fname']." ".$_SESSION['profile']['lname']." ".$_SESSION['profile']['suffix']) return 1;
	if($name == $_SESSION['profile']['fname']." ".$_SESSION['profile']['mname']." ".$_SESSION['profile']['lname']." ".$_SESSION['profile']['suffix']) return 1;
	return 0;

}

function verifyEmail($email)
{
	if($email == "") return 0;
	if(mysql_num_rows(mysql_query("select * from `email` where `memid`='".$_SESSION['profile']['id']."' and `email`='".mysql_real_escape_string($email)."' and `deleted`=0 and `hash`=''")) > 0) return 1;
	return 0;
}



	$ToBeDeleted=array();

	if($oldid == "0" && $_REQUEST['CSR'] != "")
	{
		$debugkey = $gpgkey = clean_csr(stripslashes($_REQUEST['CSR']));
		$debugpg = $gpg = trim(`echo "$gpgkey"|gpg --with-colons --homedir /tmp 2>&1`);
		$lines = "";
		$gpgarr = explode("\n", $gpg);
		foreach($gpgarr as $line)
		{
			#echo "Line[]: $line <br/>\n";
			if(substr($line, 0, 3) == "pub" || substr($line, 0, 3) == "uid")
			{
				if($lines != "")
					$lines .= "\n";
				$lines .= $line;
			}
		}
		$gpg = $lines;
		$expires = 0;
		$nerr=0; $nok=0;
		$multiple = 0;

		$resulttable=_("The following UIDs were found your key:")."<br/><table border='1'><tr><td>#</td><td>"._("Name")."</td><td>"._("Email")."</td><td>Result</td>";
		$i=0;
		foreach(explode("\n", $gpg) as $line)
		{
			$resulttable.="<tr><td>".++$i."</td>";
			$name = $comment = "";
			$bits = explode(":", $line);
			if($bits[0] == "pub" && (!$keyid || !$when))
			{
				$keyid = $bits[4];
				$when = $bits[5];
				if($bits[6] != "")
					$expires = 1;
			}
			//if(!strstr($line, "@")) continue;



			$pos = strpos($bits[9], "(") - 1;
			$nocomment = 0;
			if($pos < 0)
			{
				$nocomment = 1;
				$pos = strpos($bits[9], "<") - 1;
			}
			if($pos < 0)
			{
				$pos = strlen($bits[9]);
			}
			$name = trim(hex2bin(trim(substr($bits[9], 0, $pos))));
			$nameok=verifyName($name);
			$resulttable.="<td bgcolor='#".($nameok?"c0ffc0":"ffc0c0")."'>$name</td>";


			if($nocomment == 0 && (strpos($bits[9],")")>$pos))
			{
				$pos += 2;
				$pos2 = strpos($bits[9], ")");
				$comm = trim(hex2bin(trim(substr($bits[9], $pos, $pos2 - $pos))));
				if($comm != "")
					$comment[] = $comm;
				$pos = $pos2 + 3;
			} else {
				$pos = strpos($bits[9], "<") + 1;
			}
			$mail="";
			if(preg_match("/\@.*\@/",$bits[9]))
			{
				showheader(_("Welcome to CAcert.org"));

				echo "<font color='#ff0000'>"._("Multiple Email Adresses per UID are not allowed.")."</font>";
				unset($_REQUEST['process']);
				$id = $oldid;
				unset($oldid);
				exit();
			}
                        if (preg_match("/<([\w.-]*\@[\w.-]*)>/", $bits[9],$match)) {
				//echo "Found: ".$match[1];
				$mail = trim(hex2bin($match[1]));
			}
			else
			{
				//echo "Not found!\n";
			}

			$emailok=verifyEmail($mail);

                        $resulttable.="<td bgcolor='#".($emailok?"c0ffc0":"ffc0c0")."'>$mail</td>";
			$uidok=0;
			if($bits[1]=="r")
			{
				$rmessage=_("Error: UID is revoked");
			}
			elseif($mail=="" and $name=="")
			{
				$rmessage=_("Error: Both Name and Email address are empty");
			}
			elseif($emailok and $nameok)
			{
				$uidok=1;
				$rmessage=_("Name and Email OK.");
			}
			elseif(!$emailok and !$nameok)
			{
				$rmessage=_("Name and Email both cannot be matched with your account.");
			}
			elseif($emailok and $name=="")
			{
				$uidok=1;
				$rmessage=_("The email is OK. The name is empty.");
			}
			elseif($nameok and $mail=="")
			{
				$uidok=1;
				$rmessage=_("The name is OK. The email is empty.");
			}
			elseif(!$emailok)
			{
				$rmessage=_("The email address has not been registered and verified in your account. Please add the email address to your account first.");
			}
			elseif(!$nameok)
			{
				$rmessage=_("The name in the UID does not match the name in your account. Please verify the name.");
			}

			else
			{
				$rmessage=_("Error");
			}
			if($uidok)
			{
				$nok++;
				$resulttable.="<td>$rmessage</td>";
			}
			else
			{
				$nerr++;
				//$ToBeDeleted[]=$i;
				//echo "Adding UID $i\n";
				$resulttable.="<td bgcolor='#ffc0c0'>$rmessage</td>";
			}
			$resulttable.="</tr>\n";

			if($emailok) $multiple++;
		}
		$resulttable.="</table>";


		if($nok==0)
		{
			showheader(_("Welcome to CAcert.org"));
			echo $resulttable;

			echo "<font color='#ff0000'>"._("No valid UIDs found on your key")."</font>";
			unset($_REQUEST['process']);
			$id = $oldid;
			unset($oldid);
			$do = `echo "$debugkey\n--\n$debugpg\n--" >> /www/tmp/gpg.debug`;
			exit();
		}
		elseif($nerr)
		{
			$resulttable.=_("The unverified UIDs have been removed, the verified UIDs have been signed.");
		}


 	}


	if($oldid == "0" && $_REQUEST['CSR'] != "")
	{
		$query = "insert into `gpg` set `memid`='".$_SESSION['profile']['id']."',
						`email`='".mysql_real_escape_string($mail)."',
						`level`='1',
						`expires`='".mysql_real_escape_string($expires)."',
						`multiple`='".mysql_real_escape_string($multiple)."',
						`keyid`='".mysql_real_escape_string($keyid)."'";
		mysql_query($query);
		$id = mysql_insert_id();


		$cwd = '/tmp/gpgspace'.$id;
		mkdir($cwd,0755);

		$fp = fopen("$cwd/gpg.csr", "w");
		fputs($fp, clean_csr(stripslashes($_REQUEST['CSR'])));
		fclose($fp);


		system("gpg --homedir $cwd --import $cwd/gpg.csr");


		$debugpg = $gpg = trim(`gpg --homedir $cwd --with-colons --fixed-list-mode --list-keys $keyid 2>&1`);
		$lines = "";
		$gpgarr = explode("\n", $gpg);
		foreach($gpgarr as $line)
		{
			//echo "Line[]: $line <br/>\n";
			if(substr($line, 0, 4) == "uid:")
			{
				$name = $comment = "";
				$bits = explode(":", $line);

				$pos = strpos($bits[9], "(") - 1;
				$nocomment = 0;
				if($pos < 0)
				{
					$nocomment = 1;
					$pos = strpos($bits[9], "<") - 1;
				}
				if($pos < 0)
				{
					$pos = strlen($bits[9]);
				}

				$name = trim(hex2bin(trim(substr($bits[9], 0, $pos))));
				$nameok=verifyName($name);
				if($nocomment == 0)
				{
					$pos += 2;
					$pos2 = strpos($bits[9], ")");
					$comm = trim(hex2bin(trim(substr($bits[9], $pos, $pos2 - $pos))));
					if($comm != "")
						$comment[] = $comm;
					$pos = $pos2 + 3;
				} else {
					$pos = strpos($bits[9], "<") + 1;
				}

				$mail="";
	                        if (preg_match("/<([\w.-]*\@[\w.-]*)>/", $bits[9],$match)) {
					//echo "Found: ".$match[1];
					$mail = trim(hex2bin($match[1]));
				}
				else
				{
					//echo "Not found!\n";
				}
	
				$emailok=verifyEmail($mail);

				$uidid=$bits[7];

			if($bits[1]=="r")
			{
				$ToBeDeleted[]=$uidid;
			}
			elseif($mail=="" and $name=="")
			{
				//echo "$uidid will be deleted\n";
				$ToBeDeleted[]=$uidid;
			}
			elseif($emailok and $nameok)
			{
			}
			elseif($emailok and $name=="")
			{
			}
			elseif($nameok and $mail=="")
			{
			}
			elseif(!$emailok and !$nameok)
			{
				//echo "$uidid will be deleted\n";
				$ToBeDeleted[]=$uidid;
			}
			elseif(!$emailok)
			{
				//echo "$uidid will be deleted\n";
				$ToBeDeleted[]=$uidid;
			}
			elseif(!$nameok)
			{
				//echo "$uidid will be deleted\n";
				$ToBeDeleted[]=$uidid;
			}

			}
		}




        if(count($ToBeDeleted)>0)
	{


		$descriptorspec = array(
			0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
			1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
			2 => array("pipe", "w") // stderr is a file to write to
		);
 
		$stderr = fopen('php://stderr', 'w'); 


		//echo "Keyid: $keyid\n";

		$process = proc_open("/usr/bin/gpg --homedir $cwd --no-tty --command-fd 0 --status-fd 1 --logger-fd 2 --edit-key $keyid", $descriptorspec, $pipes);
 
		//echo "Process: $process\n";
		//fputs($stderr,"Process: $process\n");

		if (is_resource($process)) {
		//echo("it is a resource\n");
		// $pipes now looks like this:
		// 0 => writeable handle connected to child stdin
		// 1 => readable handle connected to child stdout
		// Any error output will be appended to /tmp/error-output.txt
			while (!feof($pipes[1])) 
			{
				$buffer = fgets($pipes[1], 4096);
				//echo $buffer;

      if($buffer == "[GNUPG:] GET_BOOL keyedit.sign_all.okay\n")
      {
        fputs($pipes[0],"yes\n");
      }
      elseif($buffer == "[GNUPG:] GOT_IT\n")
      {
      }
      elseif(ereg("^\[GNUPG:\] GET_BOOL keyedit\.remove\.uid\.okay\s*",$buffer))
      {
        fputs($pipes[0],"yes\n");
      }
      elseif(ereg("^\[GNUPG:\] GET_LINE keyedit\.prompt\s*",$buffer))
      {
        if(count($ToBeDeleted)>0)
        {
	  $delthisuid=array_pop($ToBeDeleted);
	  //echo "Deleting an UID $delthisuid\n";
          fputs($pipes[0],"uid ".$delthisuid."\n");
        }
        else
        {
	  //echo "Saving\n";
          fputs($pipes[0],$state?"save\n":"deluid\n");
          $state++;
        }
      }
      elseif($buffer == "[GNUPG:] GOOD_PASSPHRASE\n")
      {
      }
      elseif(ereg("^\[GNUPG:\] KEYEXPIRED ",$buffer))
      {
        echo "Key expired!\n";
	exit;
      }
      elseif($buffer == "")
      {
        //echo "Empty!\n";
      }
      else
      {
        echo "ERROR: UNKNOWN $buffer\n";
      }


			}
			//echo "Fertig\n";
			fclose($pipes[0]);
 
			//echo stream_get_contents($pipes[1]);
			fclose($pipes[1]);
 
			// It is important that you close any pipes before calling
			// proc_close in order to avoid a deadlock
			$return_value = proc_close($process);
 
			//echo "command returned $return_value\n";
		}
		else
		{
			echo "Keine ressource!\n";
		}


		}



		$do=`gpg --homedir $cwd --batch --export-options export-minimal --export $keyid >../csr/gpg-$id.csr`;

		//echo "Export: $do\n";

		//$fp = fopen("../csr/gpg-$id.csr", "w");
		//fputs($fp, clean_csr(stripslashes($_REQUEST['CSR'])));
		//fclose($fp);


if(1)
{

		mysql_query("update `gpg` set `csr`='../csr/gpg-$id.csr' where `id`='$id'");

		waitForResult('gpg', $id);
}

		showheader(_("Welcome to CAcert.org"));
		echo $resulttable;
		$query = "select * from `gpg` where `id`='$id' and `crt`!=''";
		$res = mysql_query($query);
		if(mysql_num_rows($res) <= 0)
		{
			echo _("Your certificate request has failed to be processed correctly, please try submitting it again.")."<br>\n";
			echo _("If this is a re-occuring problem, please send a copy of the key you are trying to signed to support@cacert.org. Thank you.");
		} else {
			echo "<pre>";
			readfile("../crt/gpg-$id.crt");
			echo "</pre>";
		}

		showfooter();
		exit;
	}

	$id = intval($id);
	$_SESSION['_config']['cert'] = intval($cert);

	showheader(_("Welcome to CAcert.org"));
	includeit($id, "gpg");
	showfooter();
?>