<?php
/**
* Test for example3.php
* @author Rubens Takiguti Ribeiro <rubs33@gmail.com>
*/
// Configure this variable with base url for example3.php
$url = 'http://localhost/expires/';
do_test($url);
/**
* Execute test
* @return void
*/
function do_test($url) {
// Request #1
fwrite(STDOUT, "Request #1 with value 'a'\n");
$context = stream_context_create(
array(
'http' => array(
'method' => 'GET',
'header' => ''
)
)
);
$http_response_content = file_get_contents($url . 'example3.php?value=a', null, $context);
if (!$http_response_content) {
fwrite(STDERR, "Error on response #1: unknown error\n");
exit(1);
}
// Check header
list($response_code, $header) = parse_header($http_response_header);
fwrite(STDOUT, "Response code: {$response_code} / Expected: 200\n");
if ($response_code !== 200) {
fwrite(STDERR, "Error on response #1: invalid response code ({$response_code})\n");
exit(1);
}
// Get cookie, date, cache-control, expires, last-modified
$cookies = array();
if (isset($header['set-cookie'])) {
$cookies = parse_cookies($header['set-cookie']);
}
if (!isset($header['date'])) {
fwrite(STDERR, "Error on response #1: date not received\n");
exit(1);
}
if (!isset($header['cache-control'])) {
fwrite(STDERR, "Error on response #1: cache-control not received\n");
exit(1);
}
if (!isset($header['expires'])) {
fwrite(STDERR, "Error on response #1: expires not received\n");
exit(1);
}
if (!isset($header['last-modified'])) {
fwrite(STDERR, "Error on response #1: last-modified not received\n");
exit(1);
}
$if_modified_since = current($header['last-modified']);
$cookie_str = '';
$separator = '';
foreach ($cookies as $cookie => $value) {
$cookie_str .= sprintf('%s%s=%s', $separator, $cookie, urlencode($value));
$separator = '; ';
}
$header_str = '';
$header_str .= "If-Modified-Since: {$if_modified_since}\r\n";
$header_str .= "Cookie: {$cookie_str}\r\n";
// Request #2
fwrite(STDOUT, "Request #2 with value 'b'\n");
$context = stream_context_create(
array(
'http' => array(
'method' => 'GET',
'header' => $header_str
)
)
);
$http_response_content = file_get_contents($url . 'example3.php?value=b', null, $context);
// Check header
list($response_code, $header) = parse_header($http_response_header);
fwrite(STDOUT, "Response code: {$response_code} / Expected: 304\n");
if ($response_code !== 304) {
fwrite(STDERR, "Error on response #2: invalid response code ({$response_code})\n");
exit(1);
}
fwrite(STDOUT, "Sleep for 11 seconds to expire cache\n");
sleep(11);
// Request #3
fwrite(STDOUT, "Request #3 with value 'a'\n");
$context = stream_context_create(
array(
'http' => array(
'method' => 'GET',
'header' => $header_str
)
)
);
$http_response_content = file_get_contents($url . 'example3.php?value=a', null, $context);
// Check header
list($response_code, $header) = parse_header($http_response_header);
fwrite(STDOUT, "Response code: {$response_code} / Expected: 200\n");
if ($response_code !== 200) {
fwrite(STDERR, "Error on response #3: invalid response code ({$response_code})\n");
exit(1);
}
fwrite(STDOUT, "Test passed\n");
exit(0);
}
/**
* Parse header
* @return array[int, array[string => string]]
*/
function parse_header($header) {
$response_code = null;
$parsed_header = array();
foreach ($header as $line) {
if (preg_match('/^HTTP\/\d+\.\d+\s([1-5]\d\d)\s/i', $line, $matches)) {
$response_code = (int)$matches[1];
} elseif (preg_match('/^\s*([^:]+)\s*:\s*(.*?)\s*$/', $line, $matches)) {
$key = strtolower($matches[1]);
if (!isset($parsed_header[$key])) {
$parsed_header[$key] = array();
}
$parsed_header[$key][] = $matches[2];
}
}
return array($response_code, $parsed_header);
}
/**
* Parse cookies
* @param array[string] $cookies
* @return array[string => string]
*/
function parse_cookies($cookies) {
$parsed_cookies = array();
foreach ($cookies as $value) {
if (preg_match('/^([^=]+)=([^;]+)(;.*)?/', $value, $matches)) {
$parsed_cookies[$matches[1]] = urldecode($matches[2]);
}
}
return $parsed_cookies;
}
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