add live playback support

3 files changed, 50 insertions, 5 deletions

diff --git a/lib/bbcnext.php b/lib/bbcnext.php
index ed58a4f..f4ad4ec 100644
--- a/lib/bbcnext.php
+++ b/lib/bbcnext.php
@@ -3,8 +3,22 @@
 require_once __DIR__ . '/rms.php';
 require_once __DIR__ . '/mediaselector.php';
 
+const INCLUDE_RMS_DATA = false;
+
 function next_renderFromRms(string $path) {
-    next_renderExperience(rms_fetch($path)->data);
+    $resp = rms_fetch($path);
+    try {
+        next_renderExperience($resp->data);
+    } catch (Exception|TypeError $e) {
+        echo '<exception>'
+           . htmlspecialchars($e->getMessage())
+           . '</exception>';
+    }
+    if (INCLUDE_RMS_DATA) {
+        echo '<details><summary>Raw data from RMS</summary><pre>';
+        echo json_encode($resp, JSON_PRETTY_PRINT);
+        echo '</pre></details>';
+    }
 }
 
 function next_renderExperience(array $modules) {
@@ -38,6 +52,10 @@ function next_renderModule(stdClass $module) {
         $url = mediaselector_findHls($module->data[0]->id);
         echo '<audio controls hidden id="hls-player" data-hls="' . $url . '" />';
         echo '<script src="static/hls-player.js" defer></script>';
+    } elseif ($module->id == 'live_play_area') {
+        $url = mediaselector_findLiveHls($module->data[0]->service_id);
+        echo '<audio controls hidden id="hls-player" data-hls="' . $url . '" />';
+        echo '<script src="static/hls-player.js" defer></script>';
     }
     echo "</$type>";
 }
diff --git a/lib/mediaselector.php b/lib/mediaselector.php
index df19c8d..2adaf71 100644
--- a/lib/mediaselector.php
+++ b/lib/mediaselector.php
@@ -1,27 +1,39 @@
 <?php
 
+require_once __DIR__ . '/sounds-auth.php';
+
 const MEDIASELECTOR_BASE = 'https://open.live.bbc.co.uk/mediaselector/6/select';
 
-function mediaselector_lookup(array $options): stdClass {
+function mediaselector_lookup(array $options, ?string $token = null): stdClass {
     // ['version' => '3.0', 'cvid' => 'urn:bbc:pips:pid:...']
     $url = MEDIASELECTOR_BASE;
     $options['format'] = 'json';
     foreach ($options as $k => $v) {
         $url .= "/$k/$v";
     }
-    return json_decode(file_get_contents($url));
+    $ctx = stream_context_get_default();
+    if (isset($token)) {
+        stream_context_set_option($ctx, 'http',
+                                  'header', "Authorization: Bearer $token");
+    }
+    return json_decode(file_get_contents($url, context: $ctx));
 }
 
-function mediaselector_findHls(string $vpid): ?string {
+function mediaselector_findHls(string $vpid, ?string $token = null): ?string {
     $resp = mediaselector_lookup([
         'version' => '3.0',
         'proto' => 'https',
         'transferformat' => 'hls',
         'mediaset' => 'pc',
         'cvid' => "urn:bbc:pips:pid:$vpid",
-    ]);
+    ], $token);
     if (isset($resp->result) && $resp->result == 'selectionunavailable') {
         return null;
     }
     return $resp->media[0]->connection[0]->href;
 }
+
+function mediaselector_findLiveHls(string $service): ?string {
+    $jwt = sounds_getLiveBearerToken($service);
+    return mediaselector_findHls($service, $jwt);
+}
diff --git a/lib/sounds-auth.php b/lib/sounds-auth.php
new file mode 100644
index 0000000..91e2599
--- /dev/null
+++ b/lib/sounds-auth.php
@@ -0,0 +1,15 @@
+<?php
+
+// where does 1d590d3 come from? i have no clue
+const SOUNDS_NEXT_DATA_BASE = 'https://www.bbc.co.uk/sounds/_next/data/1d590d3';
+const SOUNDS_NEXT_DATA_LIVE = '/play/live/{service}.json';
+
+function sounds_fetchPageData(string $path) {
+    return json_decode(file_get_contents(SOUNDS_NEXT_DATA_BASE . $path));
+}
+
+function sounds_getLiveBearerToken(string $service) {
+    return sounds_fetchPageData(
+        str_replace('{service}', $service, SOUNDS_NEXT_DATA_LIVE)
+    )->pageProps->jwtToken;
+}