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SurveyAuthExternalModule.php
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SurveyAuthExternalModule.php
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<?php namespace DE\RUB\SurveyAuthExternalModule;
use ExternalModules\AbstractExternalModule;
require_once "classes/SurveyAuthSettings.php";
require_once "classes/SurveyAuthInfo.php";
/**
* ExternalModule class for survey authentication.
*/
class SurveyAuthExternalModule extends AbstractExternalModule {
public static $ACTIONTAG = "SURVEY-AUTH";
/** @var SurveyAuthSettings Module Settings */
private $settings;
#region Hooks
function redcap_module_system_change_version($version, $old_version) {
$new = explode(".", str_replace("v", "", $version), 2);
$new = ($new[0].".".str_replace(".", "", $new[1])) * 1;
$old = explode(".", str_replace("v", "", $old_version), 2);
$old = ($old[0].".".str_replace(".", "", $old[1])) * 1;
if ($old < 1.30) {
// Upgrade all projects with a token to canwrite and delete the token
$projects = $this->getProjectsWithModuleEnabled();
foreach ($projects as $pid) {
$token = $this->getProjectSetting("surveyauth_token", $pid);
if (!empty($token)) {
$this->setProjectSetting("surveyauth_canwrite", true, $pid);
}
// Remove in any case
$this->removeProjectSetting("surveyauth_token", $pid);
}
}
}
function redcap_every_page_before_render($project_id) {
$page = defined("PAGE") ? PAGE : "";
// This hook handles several things:
// - Saving dashboard and report protection settings
// - Denying access to public dashboards and reports when set to be blocked from the external survey endpoint
// - Display and evaluate the login dialog on protected dashboards and reports
// Save dashboard protection settings
if ($page == "ProjectDashController:save") {
$this->save_dashboard_settings(isset($_GET["dash_id"]) ? $_GET["dash_id"] : "", $_POST);
return;
}
// Nothing to do if not a public dashboard or report page
if ($page != "surveys/index.php") return;
$page_type = "";
if (isset($_GET["__dashboard"])) $page_type = "dashboard";
if (isset($_GET["__report"])) $page_type = "report";
if (!in_array($page_type, ["dashboard", "report"])) return;
if ($page_type == "dashboard") {
$this->protect_dashboard($project_id);
return;
}
if ($page_type == "report") {
$this->protect_report($project_id);
return;
}
}
function redcap_every_page_top($project_id) {
$page = defined("PAGE") ? PAGE : "";
if ($page == "DataExport/index.php" && isset($_GET["addedit"]) && $_GET["addedit"] == "1") {
$this->add_report_settings($project_id);
}
else if ($page == "ProjectDashController:index" && isset($_GET["addedit"]) && $_GET["addedit"] == "1") {
$this->add_dashboard_settings($project_id);
}
}
function redcap_module_ajax($action, $payload, $project_id, $record, $instrument, $event_id, $repeat_instance, $survey_hash, $response_id, $survey_queue_hash, $page, $page_full, $user_id, $group_id) {
// Report settings are handled by AJAX requests
if ($action == "save-report-settings") return $this->save_report_settings($project_id, $payload);
}
function redcap_survey_page_top($project_id, $record, $instrument, $event_id, $group_id, $survey_hash, $response_id, $repeat_instance = 1) {
$this->protect_survey($project_id, $record, $instrument, $event_id, $survey_hash, $response_id, $repeat_instance);
}
#endregion
#region Public Reports
private function protect_report($project_id) {
// Gather report data and settings
$report_id = $GLOBALS["report_id"];
$this->settings = new SurveyAuthSettings($this, $project_id, 0, $report_id);
$apply_to_endpoint = $this->settings->report_endpoint;
list($endpoint_options, $endpoint) = $this->get_endpoint();
// Deny external access
if ($endpoint_options && $endpoint == "external" && $this->settings->report_denyexternal) {
header("HTTP/1.0 403 Forbidden");
print $this->settings->report_noaccessmsg;
$this->exitAfterHook();
return;
}
// Login
if ($this->settings->report_protected && ($endpoint == $apply_to_endpoint || $apply_to_endpoint == "both")) {
// Default response (unless changed)
$response = array (
"success" => false,
"error" => null
);
// Already authenticated?
$session_key = "SurveyAuth-".date("Y-m-d")."-Report-".$report_id;
if ($_SESSION[$session_key] === true) {
$response["success"] = true;
}
// Get values from POST.
if (isset($_POST["{$this->PREFIX}-username"]) &&
isset($_POST["{$this->PREFIX}-password"]) &&
isset($_POST["{$this->PREFIX}-blob"])) {
// Extract data from POST.
$username = $_POST["{$this->PREFIX}-username"];
$password = $_POST["{$this->PREFIX}-password"];
$encrypted_blob = $_POST["{$this->PREFIX}-blob"];
// Validate blob.
$blob = $this->fromSecureBlob($encrypted_blob);
if ($blob == null || $blob["project_id"] != $project_id || $blob["report_id"] != $report_id) {
$response = array (
"success" => false,
"error" => $this->settings->failMsg
);
$_SESSION[$session_key] = null;
}
else {
// Blob was valid, try to authenticate.
$response = $this->authenticatePublicDashboardOrReport($username, $password, $project_id, "Public Report $report_id");
if ($response["success"] === true) {
$_SESSION[$session_key] = true;
}
}
}
// Success? If not, then authentication needs to be performed.
if ($response["success"] !== true) {
$report = \DataExport::getReports($report_id, [], [], $project_id);
// Inject JavaScript and HTML.
$js = file_get_contents(__DIR__ . "/js/surveyauth.js");
$blob = $this->toSecureBlob(array(
"project_id" => $project_id,
"report_id" => $report_id,
"random" => $this->genKey(16) // Add some random stuff.
));
$template = file_get_contents(__DIR__ . "/html/report_ui.html");
$replace = array(
"{JS}" => $js,
"{INSTRUCTIONS}" => $this->settings->text,
"{PREFIX}" => $this->PREFIX,
"{REPORTTITLE}" => decode_filter_tags($report["title"]),
"{USERNAMELABEL}" => $this->settings->usernameLabel,
"{PASSWORDLABEL}" => $this->settings->passwordLabel,
"{SUBMITLABEL}" => $this->settings->submitLabel,
"{FAILMSG}" => $response["error"],
"{ERROR}" => strlen($response["error"]) ? "block" : "none",
"{BLOB}" => $blob,
);
$login_dialog = str_replace(array_keys($replace), array_values($replace), $template);
$objHtmlPage = new \HtmlPage();
$objHtmlPage->addStylesheet("report_public.css", 'screen,print');
$objHtmlPage->setPageTitle(strip_tags($report["title"]));
$objHtmlPage->PrintHeader();
print $login_dialog;
$objHtmlPage->PrintFooter();
// No further processing (i.e. do not let REDCap render the dashboard page).
$this->exitAfterHook();
}
else {
// Success == true means that authentication has succeded.
// There is nothing to do. We let the user continue to the dashboard.
}
}
}
private function add_report_settings($project_id) {
$report_id = isset($_GET["report_id"]) ? $this->escape($_GET["report_id"]) : "";
// Some checks
if ($report_id == "" || !\DataExport::validateReportId($project_id, $report_id)) return;
if (!$this->can_edit_report($project_id, $report_id)) return;
// Get protection status
$this->settings = new SurveyAuthSettings($this, $project_id, 0, $report_id);
$protect = $this->settings->report_protected ? "checked='checked'" : "";
$deny_external = $this->settings->report_denyexternal ? "checked='checked'" : "";
$endpoint_options = (!empty($GLOBALS["redcap_survey_base_url"]) && $GLOBALS["redcap_base_url"] !== $GLOBALS["redcap_survey_base_url"]) ? "true" : "false";
$this->initializeJavascriptModuleObject();
$jsmo = $this->framework->getJavascriptModuleObjectName();
// Inject Javascript
?>
<script>
$(function() {
const $container = $('<div id="survey_auth_container"></div>').appendTo($('#public_link_div').parent());
$('<div></div>')
.addClass("custom-control custom-switch mt-2")
.append("<input class='custom-control-input' name='survey_auth_protected' id='survey_auth_protected' <?=$protect?> type='checkbox'>")
.append("<label class='custom-control-label ms-1 mb-0' for='survey_auth_protected'>Report, when public, is protected by Survey Auth</label>")
.appendTo($container);
if(<?= $endpoint_options ?>) {
// Options: Protect internal links, external links, or both; furthermore, option to deny access from external links
$('<div></div>')
.css({
'display': 'flex',
'align-items': 'center',
'font-weight': 'normal'
})
.addClass("ms-4 mt-1 mb-2")
.append("<span class='me-1'>Apply to:</span>")
.append("<input class='form-check-input ms-2' name='surveyauth_report_endpoint' id='surveyauth_report_endpoint_both' type='radio' value='both' <?=$this->settings->report_endpoint == "both" ? "checked" : ""?>>")
.append("<label class='form-check-label ms-2 mb-0' for='surveyauth_report_endpoint_both'>Both endpoints</label>")
.append("<input class='form-check-input ms-4' name='surveyauth_report_endpoint' id='surveyauth_report_endpoint_external' type='radio' value='external' <?=$this->settings->report_endpoint == "internal" ? "checked" : ""?>>")
.append("<label class='form-check-label ms-2 mb-0' for='surveyauth_report_endpoint_external'>(External) Survey endpoint only</label>")
.append("<input class='form-check-input ms-4' name='surveyauth_report_endpoint' id='surveyauth_report_endpoint_internal' type='radio' value='internal' <?=$this->settings->report_endpoint == "external" ? "checked" : ""?>>")
.append("<label class='form-check-label ms-2 mb-0' for='surveyauth_report_endpoint_internal'>(Internal) REDCap endpoint only</label>")
.appendTo($container);
$('<div></div>')
.addClass("custom-control custom-switch mt-1")
.append("<input class='custom-control-input' name='surveyauth_report_denyexternal' id='surveyauth_report_denyexternal' <?=$deny_external?> type='checkbox'>")
.append("<label class='custom-control-label ms-1' for='surveyauth_report_denyexternal'>Deny access via (external) survey endpoint</label>")
.appendTo($container);
}
$container.on('change', function(e) {
<?=$jsmo?>.ajax('save-report-settings', {
report_id: <?=$report_id?>,
report_endpoint: $('input[name="surveyauth_report_endpoint"]:checked').val(),
report_denyexternal: $('input[name="surveyauth_report_denyexternal"]').prop("checked"),
report_protected: $('input[name="survey_auth_protected"]').prop("checked")
}).then(function(data) {
if (data == 1) {
$(e.target).addClass('surveyauth-setting-saved');
setTimeout(() => {
$(e.target).removeClass('surveyauth-setting-saved');
}, 150);
}
}).catch(function(err) {
console.error(err);
});
});
});
</script>
<style>
input[type=checkbox].surveyauth-setting-saved {
outline: 5px green solid;
outline-offset: -2px;
opacity: .7;
}
input[type=radio].surveyauth-setting-saved {
outline: 5px green solid;
opacity: .7;
}
</style>
<?php
}
/**
* Save protection settings for a report
* @param string $project_id The project ID
* @param string $payload AJAX payload
* @return void
*/
private function save_report_settings($project_id, $payload) {
$report_id = isset($payload["report_id"]) ? $payload["report_id"] * 1 : 0;
if (!$report_id > 0 || !$this->can_edit_report($project_id, $report_id)) return 0;
// Store settings
$this->setProjectSetting("surveyauth_report_protected_$report_id", $payload["report_protected"] == true);
$this->setProjectSetting("surveyauth_report_denyexternal_$report_id", $payload["report_denyexternal"] == true);
$endpoint_setting = in_array($payload["report_endpoint"], ["both", "internal", "external"]) ? $payload["report_endpoint"] : "both";
$this->setProjectSetting("surveyauth_report_endpoint_$report_id", $endpoint_setting);
return 1;
}
private function can_edit_report($project_id, $report_id) {
// Check user rights
if (!defined("USERID")) return false;
$rights = \UserRights::getPrivileges($project_id, USERID)[$project_id][USERID];
// Access to edit reports?
if (!$rights["reports"]) return false;
// Access to edit this report?
$reports_edit_access = \DataExport::getReportsEditAccess(USERID, $rights['role_id'], $rights['group_id'], $report_id);
if (empty($reports_edit_access)) return false;
return true;
}
#endregion
#region Public Dashboards
private function protect_dashboard($project_id) {
// Gather dashboard data and settings
$dash_id = $GLOBALS["dash_id"];
$this->settings = new SurveyAuthSettings($this, $project_id, $dash_id, 0);
$apply_to_endpoint = $this->settings->dash_endpoint;
list($endpoint_options, $endpoint) = $this->get_endpoint();
// Deny external access
if ($endpoint_options && $endpoint == "external" && $this->settings->dash_denyexternal) {
header("HTTP/1.0 403 Forbidden");
print $this->settings->dash_noaccessmsg;
$this->exitAfterHook();
return;
}
// Login
if ($this->settings->dash_protected && ($endpoint == $apply_to_endpoint || $apply_to_endpoint == "both")) {
// Default response (unless changed)
$response = array (
"success" => false,
"error" => null
);
// Already authenticated?
$session_key = "SurveyAuth-".date("Y-m-d")."-Dashboard-".$dash_id;
if ($_SESSION[$session_key] === true) {
$response["success"] = true;
}
// Get some dashboard info
$dashboards = new \ProjectDashboards();
$dash = $dashboards->getDashboards($project_id, $dash_id);
// Get values from POST.
if (isset($_POST["{$this->PREFIX}-username"]) &&
isset($_POST["{$this->PREFIX}-password"]) &&
isset($_POST["{$this->PREFIX}-blob"])) {
// Extract data from POST.
$username = $_POST["{$this->PREFIX}-username"];
$password = $_POST["{$this->PREFIX}-password"];
$encrypted_blob = $_POST["{$this->PREFIX}-blob"];
// Validate blob.
$blob = $this->fromSecureBlob($encrypted_blob);
if ($blob == null || $blob["project_id"] != $project_id || $blob["dash_id"] != $dash_id) {
$response = array (
"success" => false,
"error" => $this->settings->failMsg
);
$_SESSION[$session_key] = null;
}
else {
// Blob was valid, try to authenticate.
$response = $this->authenticatePublicDashboardOrReport($username, $password, $project_id, "Public Dashboard $dash_id");
if ($response["success"] === true) {
$_SESSION[$session_key] = true;
}
}
}
// Success? If not, then authentication needs to be performed.
if ($response["success"] !== true) {
// Inject JavaScript and HTML.
$js = file_get_contents(__DIR__ . "/js/surveyauth.js");
$blob = $this->toSecureBlob(array(
"project_id" => $project_id,
"dash_id" => $dash_id,
"random" => $this->genKey(16) // Add some random stuff.
));
$template = file_get_contents(__DIR__ . "/html/dash_ui.html");
$replace = array(
"{JS}" => $js,
"{INSTRUCTIONS}" => $this->settings->text,
"{PREFIX}" => $this->PREFIX,
"{DASHBOARDTITLE}" => decode_filter_tags($dash["title"]),
"{USERNAMELABEL}" => $this->settings->usernameLabel,
"{PASSWORDLABEL}" => $this->settings->passwordLabel,
"{SUBMITLABEL}" => $this->settings->submitLabel,
"{FAILMSG}" => $response["error"],
"{ERROR}" => strlen($response["error"]) ? "block" : "none",
"{BLOB}" => $blob,
);
$objHtmlPage = new \HtmlPage();
$objHtmlPage->addStylesheet("dashboard_public.css", 'screen,print');
$objHtmlPage->setPageTitle(strip_tags($dash["title"]));
$objHtmlPage->PrintHeader();
print str_replace(array_keys($replace), array_values($replace), $template);
$objHtmlPage->PrintFooter();
// No further processing (i.e. do not let REDCap render the dashboard page).
$this->exitAfterHook();
}
else {
// Success == true means that authentication has succeded.
// There is nothing to do. We let the user continue to the dashboard.
}
}
}
private function add_dashboard_settings($project_id) {
$dash_id = isset($_GET["dash_id"]) ? $_GET["dash_id"] : "";
if ($dash_id == "") return;
// Is this a public dashboard?
$dashboards = new \ProjectDashboards();
$dash = $dashboards->getDashboards($project_id, $dash_id);
if ($dash["is_public"] != "1") return;
// Get protection status
$this->settings = new SurveyAuthSettings($this, $project_id, $dash_id, 0);
$protect = $this->settings->dash_protected ? "checked='checked'" : "";
$deny_external = $this->settings->dash_denyexternal ? "checked='checked'" : "";
$endpoint_options = (!empty($GLOBALS["redcap_survey_base_url"]) && $GLOBALS["redcap_base_url"] !== $GLOBALS["redcap_survey_base_url"]) ? "true" : "false";
// Inject Javascript
// This will render the input elements that allow setting the protection status for public dashboards only
?>
<script>
$(function() {
const $container = $('#public_link_div').parent();
$('<div></div>')
.addClass("custom-control custom-switch mt-2")
.append("<input class='custom-control-input' name='survey_auth_protected' id='survey_auth_protected' <?=$protect?> type='checkbox'>")
.append("<label class='custom-control-label ms-1 mb-0' for='survey_auth_protected'>Dashboard is protected by Survey Auth</label>")
.appendTo($container);
if(<?= $endpoint_options ?>) {
// Options: Protect internal links, external links, or both; furthermore, option to deny access from external links
$('<div></div>')
.css({
'display': 'flex',
'align-items': 'center',
'font-weight': 'normal'
})
.addClass("ms-4 mt-1 mb-2")
.append("<span class='me-1'>Apply to:</span>")
.append("<input class='form-check-input ms-2' name='surveyauth_dash_endpoint' id='surveyauth_dash_endpoint_both' type='radio' value='both' <?=$this->settings->dash_endpoint == "both" ? "checked" : ""?>>")
.append("<label class='form-check-label ms-2 mb-0' for='surveyauth_dash_endpoint_both'>Both endpoints</label>")
.append("<input class='form-check-input ms-4' name='surveyauth_dash_endpoint' id='surveyauth_dash_endpoint_external' type='radio' value='external' <?=$this->settings->dash_endpoint == "internal" ? "checked" : ""?>>")
.append("<label class='form-check-label ms-2 mb-0' for='surveyauth_dash_endpoint_external'>(External) Survey endpoint only</label>")
.append("<input class='form-check-input ms-4' name='surveyauth_dash_endpoint' id='surveyauth_dash_endpoint_internal' type='radio' value='internal' <?=$this->settings->dash_endpoint == "external" ? "checked" : ""?>>")
.append("<label class='form-check-label ms-2 mb-0' for='surveyauth_dash_endpoint_internal'>(Internal) REDCap endpoint only</label>")
.appendTo($container);
$('<div></div>')
.addClass("custom-control custom-switch mt-1")
.append("<input class='custom-control-input' name='surveyauth_dash_denyexternal' id='surveyauth_dash_denyexternal' <?=$deny_external?> type='checkbox'>")
.append("<label class='custom-control-label ms-1' for='surveyauth_dash_denyexternal'>Deny access via (external) survey endpoint</label>")
.appendTo($container);
}
});
</script>
<?php
}
/**
* Save protection settings for a dashboard
* @param string $dash_id The dashboard ID
* @param array $post Copy of $_POST
* @return void
*/
private function save_dashboard_settings($dash_id, $post) {
if ($dash_id == "") return;
if (isset($post["is_public"]) && $post["is_public"] == "on") {
// Store settings
$this->setProjectSetting("surveyauth_dash_protected_$dash_id", (isset($post["survey_auth_protected"]) && $post["survey_auth_protected"] == "on") ? "1" : "0");
$this->setProjectSetting("surveyauth_dash_denyexternal_$dash_id", (isset($post["surveyauth_dash_denyexternal"]) && $post["surveyauth_dash_denyexternal"] == "on") ? "1" : "0");
$endpoint_setting = (isset($post["surveyauth_dash_endpoint"]) && in_array($post["surveyauth_dash_endpoint"], ["both", "internal", "external"])) ? $post["surveyauth_dash_endpoint"] : "both";
$this->setProjectSetting("surveyauth_dash_endpoint_$dash_id", $endpoint_setting);
}
else {
// Clear all settings
$this->setProjectSetting("surveyauth_dash_protected_$dash_id", null);
$this->setProjectSetting("surveyauth_dash_endpoint_$dash_id", null);
$this->setProjectSetting("surveyauth_dash_denyexternal_$dash_id", null);
}
}
#endregion
#region Surveys
function protect_survey($project_id, $record, $instrument, $event_id, $survey_hash, $response_id, $repeat_instance) {
if (!empty($response_id)) {
$participant_id = $GLOBALS["participant_id"];
$record = \Survey::getRecordFromPartId([$participant_id])[$participant_id];
if ($record != null) {
// We can be sure that the record exists! So we can safely do this:
// We must set this to something other than 0 in order to get @IF action tag parsing to work (Form::evaluateIfActionTag() relies on this global).
$GLOBALS["hidden_edit"] = 1;
}
}
$this->settings = new SurveyAuthSettings($this, $project_id, 0, 0);
// Check if auth has already happened, in which case we stop any further processing
if (isset($_GET["__at"])) {
$at_blob = $this->base64_url_decode($_GET["__at"]);
$at_decoded = $this->fromSecureBlob($at_blob);
if ($at_decoded == "%%".$survey_hash) {
$new_blob = $this->base64_url_encode($this->toSecureBlob("%%".$survey_hash));
// Modify form action to include auth info
print "<script>$(function() { $('#form').attr('action', $('#form').attr('action') + '&__at={$new_blob}'); }); </script>";
return;
}
}
// This is needed for older versions of REDCap in order to write crytographic keys and lockouts to system settings.
if (method_exists($this, "disableUserBasedSettingPermissions")) {
$this->disableUserBasedSettingPermissions();
}
// Get the project's data dictionary for the current instrument and find the action tag.
$dd = json_decode(\REDCap::getDataDictionary($project_id, 'json', true, null, $instrument, false));
$taggedFields = $this->getTaggedFields($dd, $project_id, $record, $event_id, $instrument, $repeat_instance);
// If there is none, then there is nothing to do.
if (!count($taggedFields)) return;
// Default response (unless changed)
$response = array (
"success" => false,
"error" => null
);
// Get values from POST.
if (isset($_POST["{$this->PREFIX}-username"]) &&
isset($_POST["{$this->PREFIX}-password"]) &&
isset($_POST["{$this->PREFIX}-blob"])) {
// Band-aid fix: Remove log entry with clear text password from redcap_log_view table
$delete_log = $this->query(
"DELETE FROM `redcap_log_view` WHERE `project_id` = ? AND `event` = 'PAGE_VIEW' AND `form_name` = ? AND `miscellaneous` LIKE '// POST%[redcap_survey_auth-password]%'",
[
$project_id,
$instrument
]
);
// Extract data from POST.
$username = $_POST["{$this->PREFIX}-username"];
$password = $_POST["{$this->PREFIX}-password"];
$encrypted_blob = $_POST["{$this->PREFIX}-blob"];
// Validate blob.
$blob = $this->fromSecureBlob($encrypted_blob);
if ($blob == null || $blob["project_id"] != $project_id || $blob["survey_hash"] != $survey_hash) {
$response = array (
"success" => false,
"error" => $this->settings->failMsg
);
}
else {
// Blob was valid, try to authenticate.
$record = $record ?? $blob["record"];
$response = $this->authenticate($username, $password, $project_id, $instrument, $event_id, $repeat_instance, $record);
}
}
$logo = "";
// Success? If not, then authentication needs to be performed.
if ($response["success"] !== true) {
// Inject JavaScript and HTML.
$js = file_get_contents(__DIR__ . "/js/surveyauth.js");
$orig_query_params = explode("?", $_SERVER["REQUEST_URI"], 2)[1] ?? "";
$orig_query_params = strlen($orig_query_params) ? "?$orig_query_params" : "";
$queryUrl = APP_PATH_SURVEY_FULL . $orig_query_params;
$blob = $this->toSecureBlob(array(
"project_id" => $project_id,
"survey_hash" => $survey_hash,
"instrument" => $instrument,
"event_id" => $event_id,
"repeat_instance" => $repeat_instance,
"record" => $record,
"random" => $this->genKey(16) // Add some random stuff.
));
$response_hash = "";
if (!empty($response_id)) {
$response_hash = \Survey::encryptResponseHash($response_id, $participant_id);
$response_hash = "<input type=\"hidden\" name=\"__response_hash__\" value=\"{$response_hash}\">";
}
$record_id_field = \REDCap::getRecordIdField();
$record_id = $record == null ? "" : "<input type=\"hidden\" name=\"{$record_id_field}\" value=\"{$record}\">";
$isMobile = isset($GLOBALS["isMobileDevice"]) && $GLOBALS["isMobileDevice"];
if (is_numeric($GLOBALS["logo"])) {
//Set max-width for logo (include for mobile devices)
$logo_width = $isMobile ? '300' : '600';
// Get img dimensions (local file storage only)
$thisImgMaxWidth = $logo_width;
$styleDim = "max-width:{$thisImgMaxWidth}px;";
if (method_exists("\Files", "getImgWidthHeightByDocId")) {
list ($thisImgWidth, $thisImgHeight) = \Files::getImgWidthHeightByDocId($GLOBALS["logo"]);
if (is_numeric($thisImgHeight)) {
$thisImgMaxHeight = round($thisImgMaxWidth / $thisImgWidth * $thisImgHeight);
if ($thisImgWidth < $thisImgMaxWidth) {
// Use native dimensions.
$styleDim = "width:{$thisImgWidth}px;max-width:{$thisImgWidth}px;height:{$thisImgHeight}px;max-height:{$thisImgHeight}px;";
} else {
// Shrink size.
$styleDim = "width:{$thisImgMaxWidth}px;max-width:{$thisImgMaxWidth}px;height:{$thisImgMaxHeight}px;max-height:{$thisImgMaxHeight}px;";
}
}
}
if (method_exists("\Files", "docIdHash")) {
$logo = "<div style=\"padding:10px 0 0;\"><img id=\"survey_logo\" onload=\"try{reloadSpeakIconsForLogo()}catch(e){}\" " .
"src=\"".APP_PATH_SURVEY."index.php?pid={$project_id}&doc_id_hash=".\Files::docIdHash($GLOBALS["logo"]) .
"&__passthru=".urlencode("DataEntry/image_view.php")."&s={$GLOBALS["hash"]}&id={$GLOBALS["logo"]}\" alt=\"" .
js_escape($GLOBALS["lang"]["survey_1140"])."\" title=\"".js_escape($GLOBALS["lang"]["survey_1140"]) .
"\" style=\"max-width:{$logo_width}px;$styleDim\"></div>";
}
}
$mobile = $isMobile ? "_mobile" : "";
$template = file_get_contents(__DIR__ . "/html/ui{$mobile}.html");
$replace = array(
"{JS}" => $js,
"{LOGO}" => $logo,
"{PREFIX}" => $this->PREFIX,
"{QUERYURL}" => $queryUrl,
"{SURVEYTITLE}" => $GLOBALS["title"],
"{INSTRUCTIONS}" => $this->settings->text,
"{USERNAMELABEL}" => $this->settings->usernameLabel,
"{PASSWORDLABEL}" => $this->settings->passwordLabel,
"{SUBMITLABEL}" => $this->settings->submitLabel,
"{FAILMSG}" => $response["error"],
"{ERROR}" => strlen($response["error"]) ? "block" : "none",
"{BLOB}" => $blob,
"{RECORDID}" => $record_id,
"{RESPONSEHASH}" => $response_hash,
);
print str_replace(array_keys($replace), array_values($replace), $template);
// No further processing (i.e. do not let REDCap render the survey page).
$this->exitAfterHook();
}
else {
// Success == true means that authentication has succeded.
// When a forward url is define, then forward
if (isset($response["targetUrl"])) {
$template = file_get_contents(__DIR__ . "/html/forward.html");
$replace = array(
"{LOGO}" => $logo,
"{PREFIX}" => $this->PREFIX,
"{SURVEYTITLE}" => $GLOBALS["title"],
"{SUCCESSMSG}" => $this->settings->successMsg,
"{CONTINUELABEL}" => $this->settings->continueLabel,
"{TARGETURL}" => $response["targetUrl"],
);
print str_replace(array_keys($replace), array_values($replace), $template);
// No further processing (i.e. do not let REDCap render the survey page).
$this->exitAfterHook();
}
// Otherwise, there is nothing to do. We let the user continue to the survey.
}
}
#endregion
#region Helpers
/**
* A helper function that returns an array indicating whether there are endpoint options and the currently used endpoint.
* @return Array(bool, string)
*/
private function get_endpoint() {
$endpoint_options = (!empty($GLOBALS["redcap_survey_base_url"]) && $GLOBALS["redcap_base_url"] !== $GLOBALS["redcap_survey_base_url"]);
$endpoint = starts_with($GLOBALS["redcap_base_url"], $_SERVER["REQUEST_SCHEME"]."://".$_SERVER["HTTP_HOST"]) ? "internal" : "external";
return [$endpoint_options, $endpoint];
}
/**
* A helper function that extracts parts of the data dictionary with the module's action tag.
*/
private function getTaggedFields($dataDictionary, $project_id, $record, $event_id, $instrument, $repeat_instance) {
$fields = array();
foreach ($dataDictionary as $fieldInfo) {
$evaluatedFieldAnnotation = \Form::replaceIfActionTag($fieldInfo->field_annotation, $project_id, $record ?? "1", $event_id, $instrument, $repeat_instance);
if (strpos($evaluatedFieldAnnotation, "@".SurveyAuthExternalModule::$ACTIONTAG)) {
array_push($fields, new SurveyAuthInfo($fieldInfo->field_name, $evaluatedFieldAnnotation, $dataDictionary));
}
}
return $fields;
}
private function base64_url_encode($input) {
return strtr($input, '+/=', '._-');
}
private function base64_url_decode($input) {
return strtr($input, '._-', '+/=');
}
#endregion
#region Authentication
function authenticatePublicDashboardOrReport($username, $password, $project_id, $log_title) {
$result = array (
"success" => false,
"error" => null,
"log_error" => [],
);
$ip = $_SERVER["REMOTE_ADDR"];
if (strlen($_SERVER["HTTP_X_FORWARDED_FOR"])) $ip .= $_SERVER["HTTP_X_FORWARDED_FOR"];
try {
do {
// Check lockout status.
$lockoutCount = $this->checkLockoutStatus($ip);
if ($this->settings->lockoutCount && $lockoutCount > $this->settings->lockoutCount - 1) {
$result["error"] = $this->settings->lockoutMsg;
$result["lockout"] = $this->settings->lockouttime * 60 * 1000;
break;
}
// Check credentials.
// First, let's see if the whitelist is active.
if ($this->settings->useWhitelist && !in_array(strtolower($username), $this->settings->whitelist)) {
break;
}
// Check custom credentials if enabled.
if (!$result["success"] && $this->settings->useCustom) {
$this->authenticateCustom($username, $password, $result);
}
// Check REDCap table-based users.
if (!$result["success"] && $this->settings->useTable) {
$this->authenticateTable($username, $password, $result);
}
// Check LDAP.
if (!$result["success"] && $this->settings->useLDAP) {
$this->authenticateLDAP($username, $password, $result);
}
// Check other LDAP.
if (!$result["success"] && $this->settings->useOtherLDAP) {
$this->authenticateOtherLDAP($username, $password, $result);
}
if (!$result["success"]) {
$result["error"] = count($result["log_error"]) ? $this->settings->errorMsg : $this->settings->failMsg;
// Update lockout status.
$this->updateLockoutStatus($ip);
break;
}
// Login was successful.
if ($lockoutCount > 0) {
$this->clearLockoutStatus($ip);
}
} while (false);
}
catch (\Exception $e) {
$result["success"] = false;
$result["error"] = $this->settings->errorMsg;
$result["log_error"][] = $e->getMessage();
}
// Write a log entry.
if ($this->settings->log == "all" || ($this->settings->log == "fail" && !$result["success"]) || ($this->settings->log == "success" && $result["success"])) {
$changes = "$log_title: " . ($result["success"] ? "Successful authentication via {$result["method"]}" : "Failed or denied login attempt (IP: {$ip})");
if (count($result["log_error"])) {
$changes .= "\n" . join("\n", $result["log_error"]);
}
\Logging::logEvent("", "", "OTHER", null, $changes, "Survey Auth EM", "", "( ".$username." )", $project_id);
}
// Return result.
return $result;
}
/**
* Determines, whether the credentials are valid.
*/
function authenticate($username, $password, $project_id, $instrument, $event_id, $repeat_instance, $record) {
$result = array (
"success" => false,
"username" => $username,
"email" => null,
"fullname" => null,
"error" => null,
"log_error" => array()
);
$ip = $_SERVER["REMOTE_ADDR"];
if (strlen($_SERVER["HTTP_X_FORWARDED_FOR"])) $ip .= $_SERVER["HTTP_X_FORWARDED_FOR"];
try {
do {
// Check lockout status.
$lockoutCount = $this->checkLockoutStatus($ip);
if ($this->settings->lockoutCount && $lockoutCount > $this->settings->lockoutCount - 1) {
$result["error"] = $this->settings->lockoutMsg;
$result["lockout"] = $this->settings->lockouttime * 60 * 1000;
break;
}
// Check credentials.
// First, let's see if the whitelist is active.
if ($this->settings->useWhitelist && !in_array(strtolower($username), $this->settings->whitelist)) {
break;
}
// Check custom credentials if enabled.
if (!$result["success"] && $this->settings->useCustom) {
$this->authenticateCustom($username, $password, $result);
}
// Check REDCap table-based users.
if (!$result["success"] && $this->settings->useTable) {
$this->authenticateTable($username, $password, $result);
}
// Check LDAP.
if (!$result["success"] && $this->settings->useLDAP) {
$this->authenticateLDAP($username, $password, $result);
}
// Check other LDAP.
if (!$result["success"] && $this->settings->useOtherLDAP) {
$this->authenticateOtherLDAP($username, $password, $result);
}
if (!$result["success"]) {
$result["error"] = count($result["log_error"]) ? $this->settings->errorMsg : $this->settings->failMsg;
// Update lockout status.
$this->updateLockoutStatus($ip);
break;
}
// Login was successful.
if ($lockoutCount > 0) {
$this->clearLockoutStatus($ip);
}
// Determine, whether any data should be written to the form
$dd = json_decode(\REDCap::getDataDictionary($project_id, 'json', true, null, $instrument, false));
$taggedFields = $this->getTaggedFields($dd, $project_id, $record, $event_id, $instrument, $repeat_instance);
if (!count($taggedFields)) {
$result["log_error"][] = "Could not find a field tagged with the @" . self::$ACTIONTAG . " action tag.";
}
else {
// Use first, any further are ignored
$tf = $taggedFields[0];
$record_created = false;
// Anything to do?
if ($this->settings->canwrite && count($tf->map)) {
// If this is a nonpublic survey, $record will be set so. Otherwise, we have to get it after saving
$new_record = $record == null;
if ($new_record) {
// Use "NEW" - it will be overwritten later
$record = "NEW";
}
$result["timestamp"] = date($tf->dateFormat);
$data_values = array();
if (strlen($tf->successField)) $data_values[$tf->successField] = $tf->successValue;
// Add mapped data items.
foreach ($tf->map as $k => $v) {
if (strlen($tf->map[$k])) $data_values[$v] = $result[$k];
}
// Prepare data object for REDCap::saveData
$Proj = new \Project($project_id);
if ($Proj->isRepeatingEvent($event_id)) {
$data_to_save = array(
$record => array(
"repeat_instances" => array(
$event_id => array(
"" => array(
$repeat_instance => $data_values
)
)
)
)
);
}
else if ($Proj->isRepeatingForm($event_id, $instrument)) {
$data_to_save = array(
$record => array(
"repeat_instances" => array(
$event_id => array(
$instrument => array(
$repeat_instance => $data_values
)
)
)
)
);
}
else {
$data_to_save = array(
$record => array(
$event_id => $data_values
)
);
}
$response = \REDCap::saveData(
$project_id, // project_id
'array', // dataFormat
$data_to_save, // data
'normal', // overwriteBehavior
null, // dateFormat
null, // type (eav, flat)
null, // group_id
true, // dataLogging
true, // performAutoCalc
true, // commitData
false, // logAsAutoCalculations
true, // skipCalcFields
[], // changeReasons
false, // returnDataComparisonArray
true, // skipFileUploadFields
false, // removeLockedFields
$new_record, // addingAutoNumberedRecords
true, // bypassPromisCheck
null, // csvDelimiter
false, // bypassEconsentProtection
null // loggingUser
);
if (isset($response["error"])) {
if ($new_record) $record = null;
$result["success"] = false;
$result["error"] = $this->settings->errorMsg;
$result["log_error"][] = "Failed to create a new record: " . $response["error"];
break;
}
else {
$record_created = true;
if ($new_record) {
$record = $response["ids"][$record];
}
}
}
// Get link to survey and add auth info
if ($record == null) {
$survey_id = \Survey::getSurveyId($instrument);
$survey_hash = \Survey::getSurveyHash($survey_id, $event_id);
$link = APP_PATH_SURVEY_FULL . "?s={$survey_hash}";
}
else {
$link = \REDCap::getSurveyLink($record, $instrument, $event_id, $repeat_instance, $project_id, $record_created);
$survey_hash = explode("?s=", $link, 2)[1];
}
$at = $this->toSecureBlob("%%".$survey_hash);
$result["targetUrl"] = $link . "&__at=" . $this->base64_url_encode($at);
$result["record"] = $record;
}
} while (false);
}
catch (\Exception $e) {
$result["success"] = false;
$result["error"] = $this->settings->errorMsg;
$result["log_error"][] = $e->getMessage();
}
// Write a log entry.
if ($this->settings->log == "all" || ($this->settings->log == "fail" && !$result["success"]) || ($this->settings->log == "success" && $result["success"])) {
$changes = $result["success"] ? "Successful authentication via {$result["method"]}" : "Failed or denied login attempt (IP: {$ip})";
if (count($result["log_error"])) {
$changes .= "\n" . join("\n", $result["log_error"]);
}
$logData = array(
"action_description" => "Survey Auth EM",
"changes_made" => $changes,
"sql" => null,
"record" => $record,
"event" => null,
"project_id" => $GLOBALS["project_id"]
);
\REDCap::logEvent($logData["action_description"], $logData["changes_made"], $logData["sql"], $logData["record"], $logData["event"], $logData["project_id"]);
}
// Return result.
return $result;
}
private function authenticateTable($username, $password, &$result) {
try {
if (\Authentication::verifyTableUsernamePassword($username, $password)) {
$result["success"] = true;
$result["method"] = "Table";
try {
$ui = \User::getUserInfo($username);
$result["email"] = $ui["user_email"];
$result["fullname"] = trim("{$ui["user_firstname"]} {$ui["user_lastname"]}");
}
catch (\Exception $e) {
$result["log_error"][] = $e->getMessage();
}
}
}
catch (\Exception $e) {
$result["log_error"][] = $e->getMessage();
}
}
private function authenticateCustom($username, $password, &$result) {
$username = strtolower($username);
if (isset($this->settings->customCredentials[$username]) && $this->settings->customCredentials[$username] == $password) {
$result["success"] = true;
$result["method"] = "Custom";
}
}
private function authenticateLDAP($username, $password, &$result) {
include APP_PATH_WEBTOOLS . 'ldap/ldap_config.php';
$configs = isset($GLOBALS["ldapdsn"]) ? $GLOBALS["ldapdsn"] : array();
if (array_key_exists("url", $configs)) $configs = array ($configs);
foreach ($configs as $config) {
$this->doLDAPauth($username, $password, $config, $result);
if ($result["success"]) {
$result["method"] = "LDAP";
}
}
if (!count($configs)) {
$result["log_error"][] = "No REDCap LDAP configurations are available.";
}
}
private function authenticateOtherLDAP($username, $password, &$result) {
if (count($this->settings->otherLDAPConfigs) < 1) {
$result["log_error"][] = "No 'Other LDAP' configurations available.";
}
foreach ($this->settings->otherLDAPConfigs as $config) {
$this->doLDAPauth($username, $password, $config, $result);
if ($result["success"]) {
$result["method"] = "Other LDAP ({$config["host"]}:{$config["port"]})";
break;
}
}
}
//region LDAP
private function doLDAPauth($username, $password, $config, &$result) {
// As we rely on the ldap module, check that it has been loaded.
if (!extension_loaded("ldap")) {
$result["log_error"][] = "LDAP extension not loaded.";
return;
}
$config = $this->mergeLDAPConfig($config);
try {
// Connect to LDAP server.