v4.4.0: stable installers that follow the newest published buildHEADmaster

Adds web/latest.php: a plain-text feed of the newest version with each artifact's filename and SHA-256. The per-release generated installers are replaced by stable web/install.sh and web/install.ps1; both read the feed, pick the newest build, verify it, install per-user and add a launcher. Publishing a new app version no longer regenerates or versions the installers.

publish.sh drops the installer renderer and Python dependency. deploy.sh now also verifies latest.php against the local artifacts and that the served installer scripts match the repository.

1 files changed, 262 insertions, 0 deletions

diff --git a/web/releases.php b/web/releases.php
new file mode 100644
index 0000000..b9c7284
--- /dev/null
+++ b/web/releases.php
@@ -0,0 +1,262 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * Shared release scanning for the download page and the latest-build endpoint.
+ *
+ * Expected file names under bin/<kind>/ (anything else is ignored):
+ *
+ *   bin/gui/zagan-bet-gui-<version>-<platform>-<arch>[.exe]
+ *   bin/client/zagan-bet-client-<version>-<platform>-<arch>[.exe]
+ *   bin/server/zagan-bet-server-<version>-<platform>-<arch>[.exe]
+ *
+ * <version> is MAJOR.MINOR.PATCH, <platform> is linux|windows|macos and
+ * <arch> is x86_64|i686|aarch64.
+ *
+ * SHA-256 values are cached in a JSON file keyed on size and mtime, so a file
+ * is only re-read when it changes. The cache lives in the system temp
+ * directory by default (the web root is often not writable by the PHP user);
+ * set ZAGAN_HASH_CACHE to put it somewhere else.
+ */
+
+const KINDS = [
+    'gui' => [
+        'title' => 'Desktop app',
+        'hint' => 'Windows 10 or newer, or a Linux desktop. No terminal needed.',
+    ],
+    'client' => [
+        'title' => 'Client',
+        'hint' => 'Needs a terminal of at least 80×24 cells.',
+    ],
+    'server' => [
+        'title' => 'Server',
+        'hint' => 'Generates its own TLS identity on first run.',
+    ],
+];
+
+const PLATFORMS = [
+    'linux' => 'Linux',
+    'windows' => 'Windows',
+    'macos' => 'macOS',
+];
+
+const ARCHES = [
+    'x86_64' => '64-bit',
+    'i686' => '32-bit',
+    'aarch64' => 'ARM64',
+];
+
+// Newest version first, then 64-bit builds before 32-bit.
+const PLATFORM_ORDER = ['linux' => 0, 'windows' => 1, 'macos' => 2];
+const ARCH_ORDER = ['x86_64' => 0, 'aarch64' => 1, 'i686' => 2];
+
+/**
+ * Hash to use for a published file, reusing the cached value when the file has
+ * not changed since it was hashed.
+ *
+ * A cached hash is valid only when the size and mtime still match and the hash
+ * was taken at or after the file's mtime, so a restored or touched file is
+ * re-read.
+ *
+ * @param array{files:array<string,array{size:int,mtime:int,sha256:string,hashed_at:int}>} $cache
+ */
+function cached_hash(
+    string $key,
+    string $path,
+    int $size,
+    int $mtime,
+    array &$cache,
+    bool &$dirty
+): ?string {
+    $entry = $cache['files'][$key] ?? null;
+    if (
+        is_array($entry)
+        && ($entry['size'] ?? null) === $size
+        && ($entry['mtime'] ?? null) === $mtime
+        && (int) ($entry['hashed_at'] ?? 0) >= $mtime
+        && isset($entry['sha256'])
+        && is_string($entry['sha256'])
+        && preg_match('/\A[0-9a-f]{64}\z/', $entry['sha256']) === 1
+    ) {
+        return $entry['sha256'];
+    }
+
+    $hash = hash_file('sha256', $path);
+    if ($hash === false) {
+        return null;
+    }
+
+    $cache['files'][$key] = [
+        'size' => $size,
+        'mtime' => $mtime,
+        'sha256' => $hash,
+        'hashed_at' => time(),
+    ];
+    $dirty = true;
+
+    return $hash;
+}
+
+/** @return array{files:array<string,array{size:int,mtime:int,sha256:string,hashed_at:int}>} */
+function load_hash_cache(string $path): array
+{
+    $raw = @file_get_contents($path);
+    if ($raw === false || $raw === '') {
+        return ['files' => []];
+    }
+    $decoded = json_decode($raw, true);
+    if (!is_array($decoded) || !isset($decoded['files']) || !is_array($decoded['files'])) {
+        return ['files' => []];
+    }
+
+    return ['files' => $decoded['files']];
+}
+
+/**
+ * Best effort: a read-only web root, a full disk or a racing writer must never
+ * break the page, so failures are ignored and the next request recomputes.
+ *
+ * @param array{files:array<string,array{size:int,mtime:int,sha256:string,hashed_at:int}>} $cache
+ */
+function save_hash_cache(string $path, array $cache): void
+{
+    $json = json_encode($cache, JSON_UNESCAPED_SLASHES);
+    if ($json === false) {
+        return;
+    }
+    $directory = dirname($path);
+    $temporary = @tempnam($directory, '.zagan-hashes-');
+    if ($temporary === false) {
+        return;
+    }
+    if (@file_put_contents($temporary, $json, LOCK_EX) === false || !@rename($temporary, $path)) {
+        @unlink($temporary);
+    }
+}
+
+/**
+ * @return array{kind:string,version:string,platform:string,arch:string,file:string,size:int,mtime:int,sha256:string}|null
+ */
+function read_release(
+    string $kind,
+    string $directory,
+    string $entry,
+    array &$cache,
+    bool &$dirty
+): ?array {
+    $pattern = '/^zagan-bet-' . preg_quote($kind, '/')
+        . '-v?(\d+\.\d+\.\d+)-([a-z]+)-([a-z0-9_]+)(\.exe)?$/i';
+    if (preg_match($pattern, $entry, $matches) !== 1) {
+        return null;
+    }
+
+    $realDirectory = realpath($directory);
+    $real = realpath($directory . '/' . $entry);
+    if ($realDirectory === false || $real === false) {
+        return null;
+    }
+    // Never serve anything that resolves outside the published directory.
+    if (!str_starts_with($real, $realDirectory . DIRECTORY_SEPARATOR)) {
+        return null;
+    }
+    if (!is_file($real)) {
+        return null;
+    }
+
+    $size = filesize($real);
+    $mtime = filemtime($real);
+    if ($size === false || $mtime === false) {
+        return null;
+    }
+
+    $hash = cached_hash($kind . '/' . $entry, $real, $size, $mtime, $cache, $dirty);
+    if ($hash === null) {
+        return null;
+    }
+
+    return [
+        'kind' => $kind,
+        'version' => $matches[1],
+        'platform' => strtolower($matches[2]),
+        'arch' => strtolower($matches[3]),
+        'file' => $entry,
+        'size' => $size,
+        'mtime' => $mtime,
+        'sha256' => $hash,
+    ];
+}
+
+/**
+ * Scan every kind and return its releases, newest version first.
+ *
+ * @return array{releases:array<string,array<int,array{kind:string,version:string,platform:string,arch:string,file:string,size:int,mtime:int,sha256:string}>>,newest_mtime:int}
+ */
+function scan_releases(): array
+{
+    $cachePath = getenv('ZAGAN_HASH_CACHE');
+    if (!is_string($cachePath) || $cachePath === '') {
+        $cachePath = rtrim(sys_get_temp_dir(), DIRECTORY_SEPARATOR)
+            . DIRECTORY_SEPARATOR . 'zagan-bet-hashes-'
+            . substr(hash('sha256', __DIR__), 0, 16) . '.json';
+    }
+    $cache = load_hash_cache($cachePath);
+    $dirty = false;
+    $seen = [];
+
+    $releases = [];
+    $newestMtime = 0;
+
+    foreach (KINDS as $kind => $meta) {
+        $found = [];
+        $directory = __DIR__ . '/bin/' . $kind;
+
+        if (is_dir($directory)) {
+            $entries = scandir($directory);
+            if ($entries !== false) {
+                foreach ($entries as $entry) {
+                    if ($entry === '.' || $entry === '..') {
+                        continue;
+                    }
+                    $release = read_release($kind, $directory, $entry, $cache, $dirty);
+                    if ($release === null) {
+                        continue;
+                    }
+                    $seen[$kind . '/' . $entry] = true;
+                    $found[] = $release;
+                    $newestMtime = max($newestMtime, $release['mtime']);
+                }
+            }
+        }
+
+        usort($found, static function (array $a, array $b): int {
+            $byVersion = version_compare($b['version'], $a['version']);
+            if ($byVersion !== 0) {
+                return $byVersion;
+            }
+            $byPlatform = (PLATFORM_ORDER[$a['platform']] ?? 9) <=> (PLATFORM_ORDER[$b['platform']] ?? 9);
+            if ($byPlatform !== 0) {
+                return $byPlatform;
+            }
+            $byArch = (ARCH_ORDER[$a['arch']] ?? 9) <=> (ARCH_ORDER[$b['arch']] ?? 9);
+            if ($byArch !== 0) {
+                return $byArch;
+            }
+            return strcmp($a['file'], $b['file']);
+        });
+
+        $releases[$kind] = $found;
+    }
+
+    // Drop cache entries for files that are no longer published.
+    foreach (array_keys($cache['files']) as $key) {
+        if (!isset($seen[$key])) {
+            unset($cache['files'][$key]);
+            $dirty = true;
+        }
+    }
+    if ($dirty) {
+        save_hash_cache($cachePath, $cache);
+    }
+
+    return ['releases' => $releases, 'newest_mtime' => $newestMtime];
+}