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<?php |
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// This file is part of BOINC. |
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// http://boinc.berkeley.edu |
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// Copyright (C) 2018 University of California |
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// |
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// BOINC is free software; you can redistribute it and/or modify it |
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// under the terms of the GNU Lesser General Public License |
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// as published by the Free Software Foundation, |
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// either version 3 of the License, or (at your option) any later version. |
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// |
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// BOINC is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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// See the GNU Lesser General Public License for more details. |
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// |
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// You should have received a copy of the GNU Lesser General Public License |
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// along with BOINC. If not, see <http://www.gnu.org/licenses/>. |
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// functions dealing with the consent and consent_type tables. |
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require_once("../inc/boinc_db.inc"); |
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require_once("../inc/util.inc"); |
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define('CONSENT_TYPE_ENROLL','ENROLL'); |
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function check_termsofuse() { |
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return defined('TERMSOFUSE_FILE') and file_exists(TERMSOFUSE_FILE); |
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} |
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function consent_to_a_policy( |
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$user, $consent_type_id, $consent_flag, $consent_not_required, |
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$source, $ctime = 0 |
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) { |
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$mys = BoincDb::escape_string($source); |
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if ($ctime==0) { |
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$mytime = $user->create_time; |
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} else { |
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$mytime = $ctime; |
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} |
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return BoincConsent::insert( |
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"(userid, consent_type_id, consent_time, consent_flag, consent_not_required, source) " . |
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"values($user->id, $consent_type_id, $mytime, $consent_flag, $consent_not_required, '$mys')" |
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); |
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} |
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// Checks to see if a user has consented to specfic consent_type_id. |
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function check_user_consent($user, $consent_name) { |
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list($checkct, $ctid) = check_consent_type($consent_name); |
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if ($checkct) { |
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$consent_result = BoincLatestConsent::lookup( |
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"userid=$user->id AND consent_type_id=$ctid AND consent_flag=1" |
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); |
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if ($consent_result) { |
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return TRUE; |
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} |
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} |
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return FALSE; |
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} |
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// Check if a particular consent_type name is available. |
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// Returns an array of format: (BOOLEAN, INTEGER). |
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// The boolean is T/F depending on whether that consent_type exists, |
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// and if checkenabled=TRUE, if the consent_type is enabled/available for use. |
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// The integer is the consent_type_id- the id from consent_type table. |
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// If the boolean is FALSE, the integer returned is -1. |
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// |
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function check_consent_type($name, $checkenabled=TRUE) { |
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$name = BoincDb::escape_string($name); |
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$ct = BoincConsentType::lookup("shortname = '$name'"); |
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if ($ct and ( !$checkenabled or ($ct->enabled)) ) { |
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return array(TRUE, $ct->id); |
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} |
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return array(FALSE, -1); |
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} |
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// When a user uses the Web site to login, this function checks the |
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// ENROLL consent and intercepts the login, |
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// presenting the terms of use page Web form before they can continue. |
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// |
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function intercept_login($user, $perm, $in_next_url = "") { |
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list($checkct, $ctid) = check_consent_type(CONSENT_TYPE_ENROLL); |
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$config = get_config(); |
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if (parse_bool($config, "enable_login_mustagree_termsofuse") |
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and $checkct |
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and check_termsofuse() |
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and (!check_user_consent($user, CONSENT_TYPE_ENROLL)) |
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) { |
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// sent user to terms-of-use Web form after login |
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$mytoken = create_token($user->id, TOKEN_TYPE_LOGIN_INTERCEPT, TOKEN_DURATION_TWO_HOURS); |
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send_cookie('logintoken', $mytoken, false); |
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send_cookie('tempuserid', $user->id, false); |
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send_cookie('tempperm', $perm, false); |
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$save_url = $in_next_url; |
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return "user_agreetermsofuse.php?next_url=$save_url"; |
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} else { |
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send_cookie('auth', $user->authenticator, $perm); |
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return $in_next_url; |
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} |
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} |
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BOINC /
boinc
Loading history...
PHP has two types of connecting operators (logical operators, and boolean operators):
and&&or||The difference between these is the order in which they are executed. In most cases, you would want to use a boolean operator like
&&, or||.Let’s take a look at a few examples:
Logical Operators are used for Control-Flow
One case where you explicitly want to use logical operators is for control-flow such as this:
Since
dieintroduces problems of its own, f.e. it makes our code hardly testable, and prevents any kind of more sophisticated error handling; you probably do not want to use this in real-world code. Unfortunately, logical operators cannot be combined withthrowat this point:These limitations lead to logical operators rarely being of use in current PHP code.