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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 related to account creation and login: |
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// - forms for create / login |
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// - function to make login token |
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include_once("../inc/consent.inc"); |
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// If have recent token, return it. |
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// Else make login token, store in user record, return token |
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// |
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function make_login_token($user) { |
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$now = time(); |
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if ($now - $user->login_token_time < 86400) { |
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$user->update("login_token_time=$now"); |
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return $user->login_token; |
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} |
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$token = substr(random_string(), 0, 16); |
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$user->update("login_token='$token', login_token_time=$now"); |
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return $token; |
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} |
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// return HTML string for a checkbox for toggling password visibility |
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// |
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function passwd_visible_checkbox($name) { |
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return sprintf(' |
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<script> |
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function toggle_passwd() { |
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var c = document.getElementById("passwd_visible"); |
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var x = document.getElementById("%s"); |
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if (c.checked) { |
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x.type = "text"; |
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} else { |
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x.type = "password"; |
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} |
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} |
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</script> |
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<input type="checkbox" id="passwd_visible" onclick="toggle_passwd()"> <label for="passwd_visible"><small>%s</small></label> |
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', $name, |
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tra("Show password") |
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); |
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} |
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function create_account_form($teamid, $next_url) { |
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form_input_hidden('next_url', $next_url); |
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if ($teamid) { |
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form_input_hidden('teamid', $teamid); |
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} |
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// Using invitation codes to restrict access? |
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// |
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if (defined('INVITE_CODES')) { |
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form_input_text( |
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sprintf('<span title="%s">%s</span>', |
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tra("An invitation code is required to create an account."), |
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tra("Invitation code") |
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), |
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"invite_code" |
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); |
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} |
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form_input_text( |
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sprintf('<span title="%s">%s</span>', |
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tra("Identifies you on our web site. Use your real name or a nickname."), |
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tra("Screen name") |
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), |
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"new_name" |
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); |
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form_input_text( |
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sprintf('<span title="%s">%s</span>', |
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tra("Must be a valid address of the form 'name@domain'."), |
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tra("Email address") |
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), |
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"new_email_addr" |
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); |
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$min_passwd_length = parse_element(get_config(), "<min_passwd_length>"); |
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if (!$min_passwd_length) { |
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$min_passwd_length = 6; |
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} |
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form_input_text( |
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sprintf('<span title="%s">%s</span>', |
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tra("Must be at least %1 characters", $min_passwd_length), |
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tra("Password") |
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), |
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"passwd", "", "password",'id="passwd"',passwd_visible_checkbox("passwd") |
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); |
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if (USER_COUNTRY) { |
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form_select( |
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sprintf('<span title="%s">%s</span>', |
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tra("Select the country you want to represent, if any."), |
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tra("Country") |
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), |
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"country", |
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country_select_options() |
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); |
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} |
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if (POSTAL_CODE) { |
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form_input_text( |
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tra("Postal or ZIP Code")."<br><small>".tra("Optional")."</small>", |
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"postal_code" |
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); |
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} |
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// Add terms of use to Web form. User must agree by checking the checkbox. |
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list($checkct, $ctid) = check_consent_type(CONSENT_TYPE_ENROLL); |
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if ($checkct and check_termsofuse()) { |
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$terms_of_use = trim(file_get_contents(TERMSOFUSE_FILE)); |
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if ($terms_of_use) { |
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panel(tra('Terms of Use'), function() use($terms_of_use) { |
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echo nl2br($terms_of_use); |
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} |
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); |
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$myitems = array( |
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array("agree_to_terms_of_use", "", false), |
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); |
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form_checkboxes(tra("Do you agree to the terms of use above?"), $myitems, 'tabindex="0"'); |
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} |
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} |
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} |
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function login_form($next_url) { |
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form_start(secure_url_base()."/login_action.php", "post"); |
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form_input_hidden("next_url", $next_url); |
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if (LDAP_HOST) { |
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$x = "Email address or LDAP user name:"; |
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} else { |
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$x = tra("Email address:"); |
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} |
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form_input_text($x, "email_addr", '', 'text', $attrs='autofocus tabindex="1"'); |
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form_input_text( |
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tra("Password:").'<br><small><a href="get_passwd.php">' . tra("forgot password?") . "</a></small>", |
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"passwd", |
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"", |
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"password", |
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'id="passwd" tabindex="2"', |
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passwd_visible_checkbox("passwd") |
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); |
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form_checkboxes(tra("Stay logged in"), |
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array(array("stay_logged_in", "", true)), |
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'tabindex="3"' |
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); |
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form_submit(tra("Log in"), 'tabindex="4"'); |
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form_end(); |
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} |
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function user_agreetermsofuse_form($next_url) { |
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form_start(secure_url_base()."/user_agreetermsofuse_action.php", "post"); |
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form_input_hidden("next_url", $next_url); |
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$terms_of_use = trim(file_get_contents(TERMSOFUSE_FILE)); |
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if ($terms_of_use) { |
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panel(tra('Terms of Use'), function() use($terms_of_use) { |
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echo nl2br($terms_of_use); |
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} |
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); |
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$myitems = array( |
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array("agree_to_terms_of_use", "", false), |
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); |
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form_checkboxes(tra("Do you agree to the terms of use above?"), $myitems, 'tabindex="0"'); |
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} |
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else { |
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// error - no terms of use for user to agree to! |
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} |
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form_submit(tra("I agree")); |
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form_end(); |
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} |
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?> |
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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
die
introduces 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 withthrow
at this point:These limitations lead to logical operators rarely being of use in current PHP code.