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MDL-59198 lti: Make params LTI2 compatible

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LTI2 recommends to include both upper case and lower case of custom params.
This patch makes our implementation confer to that standard.
This commit is contained in:
Ankit Agarwal 2017-08-29 10:31:04 +05:30
parent 27466d7548
commit e4f7cfe19f
2 changed files with 17 additions and 8 deletions
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13
mod/lti/locallib.php
View file

@ -1165,7 +1165,7 @@ function lti_get_enabled_capabilities($tool) {
* @param string $customstr String containing the parameters
* @param boolean $islti2 True if an LTI 2 tool is being launched
*
* @return Array of custom parameters
* @return array of custom parameters
*/
function lti_split_custom_parameters($toolproxy, $tool, $params, $customstr, $islti2 = false) {
$customstr = str_replace("\r\n", "\n", $customstr);
@ -1179,11 +1179,12 @@ function lti_split_custom_parameters($toolproxy, $tool, $params, $customstr, $is
continue;
}
$key = trim(core_text::substr($line, 0, $pos));
$key = lti_map_keyname($key, false);
$val = trim(core_text::substr($line, $pos + 1, strlen($line)));
$val = lti_parse_custom_parameter($toolproxy, $tool, $params, $val, $islti2);
$key2 = lti_map_keyname($key);
$retval['custom_'.$key2] = $val;
if ($islti2 && ($key != $key2)) {
if ($key != $key2) {
$retval['custom_'.$key] = $val;
}
}
@ -1269,14 +1270,16 @@ function lti_parse_custom_parameter($toolproxy, $tool, $params, $value, $islti2)
* Used for building the names of the different custom parameters
*
* @param string $key Parameter name
*
* @param bool $tolower Do we want to convert the key into lower case?
* @return string Processed name
*/
function lti_map_keyname($key) {
function lti_map_keyname($key, $tolower = true) {
$newkey = "";
if ($tolower) {
$key = core_text::strtolower(trim($key));
}
foreach (str_split($key) as $ch) {
if ( ($ch >= 'a' && $ch <= 'z') || ($ch >= '0' && $ch <= '9') ) {
if ( ($ch >= 'a' && $ch <= 'z') || ($ch >= '0' && $ch <= '9') || (!$tolower && ($ch >= 'A' && $ch <= 'Z'))) {
$newkey .= $ch;
} else {
$newkey .= '_';

10
mod/lti/tests/locallib_test.php
View file

@ -71,14 +71,20 @@ class mod_lti_locallib_testcase extends advanced_testcase {
$this->assertEquals(lti_split_custom_parameters(null, $tool, array(), "x=1\ny=2", false),
array('custom_x' => '1', 'custom_y' => '2'));
// Check params with caps.
$this->assertEquals(lti_split_custom_parameters(null, $tool, array(), "X=1", false),
array('custom_x' => '1', 'custom_X' => '1'));
// Removed repeat of previous test with a semicolon separator.
$this->assertEquals(lti_split_custom_parameters(null, $tool, array(), 'Review:Chapter=1.2.56', false),
array('custom_review_chapter' => '1.2.56'));
array('custom_review_chapter' => '1.2.56', 'custom_Review_Chapter' => '1.2.56'));
$this->assertEquals(lti_split_custom_parameters(null, $tool, array(),
'Complex!@#$^*(){}[]KEY=Complex!@#$^*;(){}[]½Value', false),
array('custom_complex____________key' => 'Complex!@#$^*;(){}[]½Value'));
array(
'custom_complex____________key' => 'Complex!@#$^*;(){}[]½Value',
'custom_Complex____________KEY' => 'Complex!@#$^*;(){}[]½Value'));
// Test custom parameter that returns $USER property.
$user = $this->getDataGenerator()->create_user(array('middlename' => 'SOMETHING'));