ckdb/php - allow cancelling 2fa setup and removing 2fa directly

pool/email.php

@@ -186,7 +186,7 @@ function twofaSetup($to, $whoip, $emailinfo)
 	return false;
 
  $message = "2FA is ready to be tested.$eol";
- $message = "It will be enabled once you test it.$eol$eol";
+ $message .= "It will be enabled once you test it.$eol$eol";
  $message .= $ret;
 
  return sendnoheader($to, "2FA is Ready to be Enabled", $message, $emailinfo);
@@ -211,6 +211,46 @@ function twofaEnabled($to, $whoip, $emailinfo)
  return sendnoheader($to, "2FA is Enabled", $message, $emailinfo);
 }
 #
+function twofaCancel($to, $whoip, $emailinfo)
+{
+ global $eol;
+
+ if (!isset($emailinfo['KWebURL']))
+	return false;
+
+ $web = $emailinfo['KWebURL'];
+
+ $ret = emailEnd('2fa change', $whoip, $emailinfo);
+ if ($ret === false)
+	return false;
+
+ $message = "2FA setup was cancelled on your account.$eol";
+ $message .= "You can set it up later if you want.$eol$eol";
+ $message .= $ret;
+
+ return sendnoheader($to, "2FA was Cancelled", $message, $emailinfo);
+}
+#
+function twofaRemove($to, $whoip, $emailinfo)
+{
+ global $eol;
+
+ if (!isset($emailinfo['KWebURL']))
+	return false;
+
+ $web = $emailinfo['KWebURL'];
+
+ $ret = emailEnd('2fa change', $whoip, $emailinfo);
+ if ($ret === false)
+	return false;
+
+ $message = "2FA was removed from your account.$eol";
+ $message .= "You can set it up again later if you want.$eol$eol";
+ $message .= $ret;
+
+ return sendnoheader($to, "2FA was Removed", $message, $emailinfo);
+}
+#
 # getOpts required for email
 # If they aren't all setup in the DB then email functions will return false
 function emailOptList()

pool/page_2fa.php

@@ -23,7 +23,6 @@ function set_2fa($data, $user, $tfa, $ans, $err)
  $pg .= '<table cellpadding=20 cellspacing=0 border=1>';
  $pg .= '<tr class=dc><td><center>';
 
- $pg .= makeForm('2fa');
  $pg .= '<table cellpadding=5 cellspacing=0 border=0>';
  $pg .= '<tr class=dc><td>';
  switch ($tfa)
@@ -33,9 +32,10 @@ function set_2fa($data, $user, $tfa, $ans, $err)
 	$pg .= "You don't have Two Factor Authentication (2FA) setup yet<br><br>";
 	$pg .= 'To use 2FA you need an App on your phone/tablet<br>';
 	$pg .= app_txt('ones');
+	$pg .= makeForm('2fa');
 	$pg .= 'Click here to begin the setup process for 2FA: ';
 	$pg .= '<input type=submit name=Setup value=Setup>';
-	$pg .= '</td></tr>';
+	$pg .= '</form></td></tr>';
 	break;
   case 'test':
 	$pg .= '<tr class=dc><td>';
@@ -66,8 +66,9 @@ function set_2fa($data, $user, $tfa, $ans, $err)
 	$pg .= '<div id=can0><canvas id=can width=1 height=1>';
 	$pg .= 'A qrcode will show here if your browser supports html5/canvas';
 	$pg .= "</canvas></div><br>";
+	$pg .= makeForm('2fa');
 	$pg .= 'Then enter your App 2FA Value: <input name=Value value="" size=10> ';
-	$pg .= '<input type=submit name=Test value=Test></td></tr>';
+	$pg .= '<input type=submit name=Test value=Test></form></td></tr>';
 	$pg .= '<tr class=dl><td>';
 	$pg .= app_txt('2FA apps');
 	$pg .= '<span class=urg>N.B.</span> if you wish to setup 2FA on more than one device,<br>';
@@ -79,20 +80,32 @@ function set_2fa($data, $user, $tfa, $ans, $err)
 	$pg .= 'so your should copy it and store it somewhere securely.<br>';
 	$pg .= 'For security reasons, the site will not show you an active <span class=urg>2FA Secret Key</span>.<br>';
 	$pg .= '</td></tr>';
+	$pg .= '<tr class=dl><td>';
+	$pg .= makeForm('2fa');
+	$pg .= '<br>If you wish to cancel setting up 2FA, click here: ';
+	$pg .= '<input type=submit name=Cancel value=Cancel></form></td></tr>';
 	break;
   case 'ok':
 	$pg .= '<tr class=dc><td>';
 	$pg .= '2FA is enabled on your account.<br><br>';
 	$pg .= 'If you wish to replace your Secret Key with a new one:<br><br>';
+	$pg .= makeForm('2fa');
 	$pg .= 'Current 2FA Value: <input name=Value value="" size=10> ';
-	$pg .= '<input type=submit name=New value=New><span class=st1>*</span><br><br>';
+	$pg .= '<input type=submit name=New value=New><span class=st1>*</span>';
+	$pg .= '</form><br><br>';
 	$pg .= '<span class=st1>*</span>WARNING: replacing the Secret Key will disable 2FA<br>';
 	$pg .= 'until you successfully test the new key,<br>';
 	$pg .= 'thus getting a new key is effectively the same as disabling 2FA.<br><br>';
 	$pg .= '</td></tr>';
+	$pg .= '<tr class=dc><td>';
+	$pg .= makeForm('2fa');
+	$pg .= 'If you wish to remove 2FA from your account,<br>';
+	$pg .= 'enter your App 2FA Value: <input name=Value value="" size=10><br>';
+	$pg .= 'then click remove: <input type=submit name=Remove value=Remove>';
+	$pg .= '</form></td></tr>';
 	break;
  }
- $pg .= '</table></form>';
+ $pg .= '</table>';
  $pg .= '</center></td></tr>';
 
  $pg .= '<tr class=dl><td>';
@@ -147,14 +160,22 @@ function set_2fa($data, $user, $tfa, $ans, $err)
 #
 function do2fa($data, $user)
 {
+ $mailmode = '';
  $err = '';
  $setup = getparam('Setup', false);
- $testemail = false;
  if ($setup === 'Setup')
  {
 	// rand() included as part of the entropy
 	$ans = get2fa($user, 'setup', rand(1073741824,2147483647), 0);
-	$testemail = true;
+	$mailmode = 'Setup';
+ }
+ else
+ {
+	$can = getparam('Cancel', false);
+	if ($can === 'Cancel')
+	{
+		$ans = get2fa($user, 'untest', 0, 0);
+		$mailmode = 'Cancel';
 	}
 	else
 	{
@@ -163,7 +184,7 @@ function do2fa($data, $user)
 		if ($test === 'Test' and $value !== null)
 		{
 			$ans = get2fa($user, 'test', 0, $value);
-		$testemail = true;
+			$mailmode = 'Test';
 		}
 		else
 		{
@@ -171,12 +192,22 @@ function do2fa($data, $user)
 			if ($nw === 'New' and $value !== null)
 			{
 				$ans = get2fa($user, 'new', rand(1073741824,2147483647), $value);
-			$testemail = true;
+				$mailmode = 'New';
+			}
+			else
+			{
+				$rem = getparam('Remove', false);
+				if ($rem === 'Remove' and $value !== null)
+				{
+					$ans = get2fa($user, 'remove', 0, $value);
+					$mailmode = 'Remove';
 				}
 				else
 					$ans = get2fa($user, '', 0, 0);
 			}
 		}
+	}
+ }
  if ($ans['STATUS'] != 'ok')
 	$err = 'DBERR';
  else
@@ -184,7 +215,7 @@ function do2fa($data, $user)
 	if (isset($ans['2fa_error']))
 		$err = $ans['2fa_error'];
 
-	if ($testemail and $err == '')
+	if ($mailmode != '' and $err == '')
 	{
 		$ans2 = userSettings($user);
 		if ($ans2['STATUS'] != 'ok')
@@ -199,12 +230,16 @@ function do2fa($data, $user)
 				$err = 'An error occurred, check your details below';
 			else
 			{
-				if ($setup === 'Setup')
+				if ($mailmode === 'Setup')
 					twofaSetup($email, zeip(), $emailinfo);
-				else if ($test === 'Test')
+				else if ($mailmode === 'Test')
 					twofaEnabled($email, zeip(), $emailinfo);
-				else if ($nw === 'New')
+				else if ($mailmode === 'New')
 					twofaSetup($email, zeip(), $emailinfo);
+				else if ($mailmode === 'Cancel')
+					twofaCancel($email, zeip(), $emailinfo);
+				else if ($mailmode === 'Remove')
+					twofaRemove($email, zeip(), $emailinfo);
 			}
 		}
 	}

src/ckdb.h

@@ -55,7 +55,7 @@
 
 #define DB_VLOCK "1"
 #define DB_VERSION "1.0.2"
-#define CKDB_VERSION DB_VERSION"-1.233"
+#define CKDB_VERSION DB_VERSION"-1.240"
 
 #define WHERE_FFL " - from %s %s() line %d"
 #define WHERE_FFL_HERE __FILE__, __func__, __LINE__
@@ -2633,6 +2633,7 @@ extern bool check_2fa(USERS *users, int32_t value);
 extern bool tst_2fa(K_ITEM *old_u_item, int32_t value, char *by, char *code,
 		    char *inet, tv_t *cd, K_TREE *trf_root);
 extern K_ITEM *remove_2fa(K_ITEM *old_u_item, int32_t value, char *by,
-			  char *code, char *inet, tv_t *cd, K_TREE *trf_root);
+			  char *code, char *inet, tv_t *cd, K_TREE *trf_root,
+			  bool check);
 
 #endif

src/ckdb_cmd.c

@@ -301,9 +301,24 @@ static char *cmd_2fa(__maybe_unused PGconn *conn, char *cmd, char *id,
 			else {
 				key = false;
 				sfa_status = "ok";
+				sfa_error = "2FA Enabled";
 			}
 			// Report sfa_error to web
 			ok = true;
+		} else if (strcmp(action, "untest") == 0) {
+			// Can't untest if it's not ready to test
+			if ((users->databits & (USER_TOTPAUTH | USER_TEST2FA))
+			    != (USER_TOTPAUTH | USER_TEST2FA))
+				goto dame;
+			// since it's currently test, the value isn't required
+			u_new = remove_2fa(u_item, 0, by, code, inet, now,
+					   trf_root, false);
+			if (u_new) {
+				ok = true;
+				sfa_status = EMPTY;
+				key = false;
+				sfa_error = "2FA Cancelled";
+			}
 		} else if (strcmp(action, "new") == 0) {
 			// Can't new if 2FA isn't already present -> setup
 			if ((users->databits & USER_TOTPAUTH) == 0)
@@ -329,18 +344,22 @@ static char *cmd_2fa(__maybe_unused PGconn *conn, char *cmd, char *id,
 			// Can't remove if 2FA isn't already present
 			if (!(users->databits & (USER_TOTPAUTH | USER_TEST2FA)))
 				goto dame;
+			// remove requires value
 			value = (int32_t)atoi(transfer_data(i_value));
 			if (!check_2fa(users, value)) {
 				sfa_error = "Invalid code";
 				// Report sfa_error to web
 				ok = true;
 			} else {
+				/* already tested 2fa so don't retest, also,
+				 *  a retest will fail using the same value */
 				u_new = remove_2fa(u_item, value, by, code,
-						   inet, now, trf_root);
+						   inet, now, trf_root, false);
 				if (u_new) {
 					ok = true;
 					sfa_status = EMPTY;
 					key = false;
+					sfa_error = "2FA Removed";
 				}
 			}
 		}

src/ckdb_crypt.c

@@ -237,13 +237,16 @@ bool tst_2fa(K_ITEM *old_u_item, int32_t value, char *by, char *code,
 }
 
 K_ITEM *remove_2fa(K_ITEM *old_u_item, int32_t value, char *by, char *code,
-		   char *inet, tv_t *cd,  K_TREE *trf_root)
+		   char *inet, tv_t *cd,  K_TREE *trf_root, bool check)
 {
 	K_ITEM *u_item = NULL;
 	USERS *old_users, *users;
-	bool ok, did = false;
+	bool ok = true, did = false;
 
 	DATA_USERS(old_users, old_u_item);
+	/* N.B. check_2fa will fail if it is called a second time
+	 * with the same value */
+	if (check)
 		ok = check_2fa(old_users, value);
 	if (ok) {
 		K_WLOCK(users_free);