init claude-code

2026-04-01 17:32:37 +02:00
commit 73b208c009
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+/**
+ * Shared helper functions for plugin installation
+ *
+ * This module contains common utilities used across the plugin installation
+ * system to reduce code duplication and improve maintainability.
+ */
+
+import { randomBytes } from 'crypto'
+import { rename, rm } from 'fs/promises'
+import { dirname, join, resolve, sep } from 'path'
+import {
+  type AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
+  type AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
+  logEvent,
+} from '../../services/analytics/index.js'
+import { getCwd } from '../cwd.js'
+import { toError } from '../errors.js'
+import { getFsImplementation } from '../fsOperations.js'
+import { logError } from '../log.js'
+import {
+  getSettingsForSource,
+  updateSettingsForSource,
+} from '../settings/settings.js'
+import { buildPluginTelemetryFields } from '../telemetry/pluginTelemetry.js'
+import { clearAllCaches } from './cacheUtils.js'
+import {
+  formatDependencyCountSuffix,
+  getEnabledPluginIdsForScope,
+  type ResolutionResult,
+  resolveDependencyClosure,
+} from './dependencyResolver.js'
+import {
+  addInstalledPlugin,
+  getGitCommitSha,
+} from './installedPluginsManager.js'
+import { getManagedPluginNames } from './managedPlugins.js'
+import { getMarketplaceCacheOnly, getPluginById } from './marketplaceManager.js'
+import {
+  isOfficialMarketplaceName,
+  parsePluginIdentifier,
+  scopeToSettingSource,
+} from './pluginIdentifier.js'
+import {
+  cachePlugin,
+  getVersionedCachePath,
+  getVersionedZipCachePath,
+} from './pluginLoader.js'
+import { isPluginBlockedByPolicy } from './pluginPolicy.js'
+import { calculatePluginVersion } from './pluginVersioning.js'
+import {
+  isLocalPluginSource,
+  type PluginMarketplaceEntry,
+  type PluginScope,
+  type PluginSource,
+} from './schemas.js'
+import {
+  convertDirectoryToZipInPlace,
+  isPluginZipCacheEnabled,
+} from './zipCache.js'
+
+/**
+ * Plugin installation metadata for installed_plugins.json
+ */
+export type PluginInstallationInfo = {
+  pluginId: string
+  installPath: string
+  version?: string
+}
+
+/**
+ * Get current ISO timestamp
+ */
+export function getCurrentTimestamp(): string {
+  return new Date().toISOString()
+}
+
+/**
+ * Validate that a resolved path stays within a base directory.
+ * Prevents path traversal attacks where malicious paths like './../../../etc/passwd'
+ * could escape the expected directory.
+ *
+ * @param basePath - The base directory that the resolved path must stay within
+ * @param relativePath - The relative path to validate
+ * @returns The validated absolute path
+ * @throws Error if the path would escape the base directory
+ */
+export function validatePathWithinBase(
+  basePath: string,
+  relativePath: string,
+): string {
+  const resolvedPath = resolve(basePath, relativePath)
+  const normalizedBase = resolve(basePath) + sep
+
+  // Check if the resolved path starts with the base path
+  // Adding sep ensures we don't match partial directory names
+  // e.g., /foo/bar should not match /foo/barbaz
+  if (
+    !resolvedPath.startsWith(normalizedBase) &&
+    resolvedPath !== resolve(basePath)
+  ) {
+    throw new Error(
+      `Path traversal detected: "${relativePath}" would escape the base directory`,
+    )
+  }
+
+  return resolvedPath
+}
+
+/**
+ * Cache a plugin (local or external) and add it to installed_plugins.json
+ *
+ * This function combines the common pattern of:
+ * 1. Caching a plugin to ~/.claude/plugins/cache/
+ * 2. Adding it to the installed plugins registry
+ *
+ * Both local plugins (with string source like "./path") and external plugins
+ * (with object source like {source: "github", ...}) are cached to the same
+ * location to ensure consistent behavior.
+ *
+ * @param pluginId - Plugin ID in "plugin@marketplace" format
+ * @param entry - Plugin marketplace entry
+ * @param scope - Installation scope (user, project, local, or managed). Defaults to 'user'.
+ *                'managed' scope is used for plugins installed automatically from managed settings.
+ * @param projectPath - Project path (required for project/local scopes)
+ * @param localSourcePath - For local plugins, the resolved absolute path to the source directory
+ * @returns The installation path
+ */
+export async function cacheAndRegisterPlugin(
+  pluginId: string,
+  entry: PluginMarketplaceEntry,
+  scope: PluginScope = 'user',
+  projectPath?: string,
+  localSourcePath?: string,
+): Promise<string> {
+  // For local plugins, we need the resolved absolute path
+  // Cast to PluginSource since cachePlugin handles any string path at runtime
+  const source: PluginSource =
+    typeof entry.source === 'string' && localSourcePath
+      ? (localSourcePath as PluginSource)
+      : entry.source
+
+  const cacheResult = await cachePlugin(source, {
+    manifest: entry as PluginMarketplaceEntry,
+  })
+
+  // For local plugins, use the original source path for Git SHA calculation
+  // because the cached temp directory doesn't have .git (it's copied from a
+  // subdirectory of the marketplace git repo). For external plugins, use the
+  // cached path. For git-subdir sources, cachePlugin already captured the SHA
+  // before discarding the ephemeral clone (the extracted subdir has no .git).
+  const pathForGitSha = localSourcePath || cacheResult.path
+  const gitCommitSha =
+    cacheResult.gitCommitSha ?? (await getGitCommitSha(pathForGitSha))
+
+  const now = getCurrentTimestamp()
+  const version = await calculatePluginVersion(
+    pluginId,
+    entry.source,
+    cacheResult.manifest,
+    pathForGitSha,
+    entry.version,
+    cacheResult.gitCommitSha,
+  )
+
+  // Move the cached plugin to the versioned path: cache/marketplace/plugin/version/
+  const versionedPath = getVersionedCachePath(pluginId, version)
+  let finalPath = cacheResult.path
+
+  // Only move if the paths are different and plugin was cached to a different location
+  if (cacheResult.path !== versionedPath) {
+    // Create the versioned directory structure
+    await getFsImplementation().mkdir(dirname(versionedPath))
+
+    // Remove existing versioned path if present (force: no-op if missing)
+    await rm(versionedPath, { recursive: true, force: true })
+
+    // Check if versionedPath is a subdirectory of cacheResult.path
+    // This happens when marketplace name equals plugin name (e.g., "exa-mcp-server@exa-mcp-server")
+    // In this case, we can't directly rename because we'd be moving a directory into itself
+    const normalizedCachePath = cacheResult.path.endsWith(sep)
+      ? cacheResult.path
+      : cacheResult.path + sep
+    const isSubdirectory = versionedPath.startsWith(normalizedCachePath)
+
+    if (isSubdirectory) {
+      // Move to a temp location first, then to final destination
+      // We can't directly rename/copy a directory into its own subdirectory
+      // Use the parent of cacheResult.path (same filesystem) to avoid EXDEV
+      // errors when /tmp is on a different filesystem (e.g., tmpfs)
+      const tempPath = join(
+        dirname(cacheResult.path),
+        `.claude-plugin-temp-${Date.now()}-${randomBytes(4).toString('hex')}`,
+      )
+      await rename(cacheResult.path, tempPath)
+      await getFsImplementation().mkdir(dirname(versionedPath))
+      await rename(tempPath, versionedPath)
+    } else {
+      // Move the cached plugin to the versioned location
+      await rename(cacheResult.path, versionedPath)
+    }
+    finalPath = versionedPath
+  }
+
+  // Zip cache mode: convert directory to ZIP and remove the directory
+  if (isPluginZipCacheEnabled()) {
+    const zipPath = getVersionedZipCachePath(pluginId, version)
+    await convertDirectoryToZipInPlace(finalPath, zipPath)
+    finalPath = zipPath
+  }
+
+  // Add to both V1 and V2 installed_plugins files with correct scope
+  addInstalledPlugin(
+    pluginId,
+    {
+      version,
+      installedAt: now,
+      lastUpdated: now,
+      installPath: finalPath,
+      gitCommitSha,
+    },
+    scope,
+    projectPath,
+  )
+
+  return finalPath
+}
+
+/**
+ * Register a plugin installation without caching
+ *
+ * Used for local plugins that are already on disk and don't need remote caching.
+ * External plugins should use cacheAndRegisterPlugin() instead.
+ *
+ * @param info - Plugin installation information
+ * @param scope - Installation scope (user, project, local, or managed). Defaults to 'user'.
+ *                'managed' scope is used for plugins registered from managed settings.
+ * @param projectPath - Project path (required for project/local scopes)
+ */
+export function registerPluginInstallation(
+  info: PluginInstallationInfo,
+  scope: PluginScope = 'user',
+  projectPath?: string,
+): void {
+  const now = getCurrentTimestamp()
+  addInstalledPlugin(
+    info.pluginId,
+    {
+      version: info.version || 'unknown',
+      installedAt: now,
+      lastUpdated: now,
+      installPath: info.installPath,
+    },
+    scope,
+    projectPath,
+  )
+}
+
+/**
+ * Parse plugin ID into components
+ *
+ * @param pluginId - Plugin ID in "plugin@marketplace" format
+ * @returns Parsed components or null if invalid
+ */
+export function parsePluginId(
+  pluginId: string,
+): { name: string; marketplace: string } | null {
+  const parts = pluginId.split('@')
+  if (parts.length !== 2 || !parts[0] || !parts[1]) {
+    return null
+  }
+
+  return {
+    name: parts[0],
+    marketplace: parts[1],
+  }
+}
+
+/**
+ * Structured result from the install core. Wrappers format messages and
+ * handle analytics/error-catching around this.
+ */
+export type InstallCoreResult =
+  | { ok: true; closure: string[]; depNote: string }
+  | { ok: false; reason: 'local-source-no-location'; pluginName: string }
+  | { ok: false; reason: 'settings-write-failed'; message: string }
+  | {
+      ok: false
+      reason: 'resolution-failed'
+      resolution: ResolutionResult & { ok: false }
+    }
+  | { ok: false; reason: 'blocked-by-policy'; pluginName: string }
+  | {
+      ok: false
+      reason: 'dependency-blocked-by-policy'
+      pluginName: string
+      blockedDependency: string
+    }
+
+/**
+ * Format a failed ResolutionResult into a user-facing message. Unified on
+ * the richer CLI messages (the "Is the X marketplace added?" hint is useful
+ * for UI users too).
+ */
+export function formatResolutionError(
+  r: ResolutionResult & { ok: false },
+): string {
+  switch (r.reason) {
+    case 'cycle':
+      return `Dependency cycle: ${r.chain.join(' → ')}`
+    case 'cross-marketplace': {
+      const depMkt = parsePluginIdentifier(r.dependency).marketplace
+      const where = depMkt
+        ? `marketplace "${depMkt}"`
+        : 'a different marketplace'
+      const hint = depMkt
+        ? ` Add "${depMkt}" to allowCrossMarketplaceDependenciesOn in the ROOT marketplace's marketplace.json (the marketplace of the plugin you're installing — only its allowlist applies; no transitive trust).`
+        : ''
+      return `Dependency "${r.dependency}" (required by ${r.requiredBy}) is in ${where}, which is not in the allowlist — cross-marketplace dependencies are blocked by default. Install it manually first.${hint}`
+    }
+    case 'not-found': {
+      const { marketplace: depMkt } = parsePluginIdentifier(r.missing)
+      return depMkt
+        ? `Dependency "${r.missing}" (required by ${r.requiredBy}) not found. Is the "${depMkt}" marketplace added?`
+        : `Dependency "${r.missing}" (required by ${r.requiredBy}) not found in any configured marketplace`
+    }
+  }
+}
+
+/**
+ * Core plugin install logic, shared by the CLI path (`installPluginOp`) and
+ * the interactive UI path (`installPluginFromMarketplace`). Given a
+ * pre-resolved marketplace entry, this:
+ *
+ *   1. Guards against local-source plugins without a marketplace install
+ *      location (would silently no-op otherwise).
+ *   2. Resolves the transitive dependency closure (when PLUGIN_DEPENDENCIES
+ *      is on; trivial single-plugin closure otherwise).
+ *   3. Writes the entire closure to enabledPlugins in one settings update.
+ *   4. Caches each closure member (downloads/copies sources as needed).
+ *   5. Clears memoization caches.
+ *
+ * Returns a structured result. Message formatting, analytics, and top-level
+ * error wrapping stay in the caller-specific wrappers.
+ *
+ * @param marketplaceInstallLocation Pass this if the caller already has it
+ *   (from a prior marketplace search) to avoid a redundant lookup.
+ */
+export async function installResolvedPlugin({
+  pluginId,
+  entry,
+  scope,
+  marketplaceInstallLocation,
+}: {
+  pluginId: string
+  entry: PluginMarketplaceEntry
+  scope: 'user' | 'project' | 'local'
+  marketplaceInstallLocation?: string
+}): Promise<InstallCoreResult> {
+  const settingSource = scopeToSettingSource(scope)
+
+  // ── Policy guard ──
+  // Org-blocked plugins (managed-settings.json enabledPlugins: false) cannot
+  // be installed. Checked here so all install paths (CLI, UI, hint-triggered)
+  // are covered in one place.
+  if (isPluginBlockedByPolicy(pluginId)) {
+    return { ok: false, reason: 'blocked-by-policy', pluginName: entry.name }
+  }
+
+  // ── Resolve dependency closure ──
+  // depInfo caches marketplace lookups so the materialize loop doesn't
+  // re-fetch. Seed the root if the caller gave us its install location.
+  const depInfo = new Map<
+    string,
+    { entry: PluginMarketplaceEntry; marketplaceInstallLocation: string }
+  >()
+  // Without this guard, a local-source root with undefined
+  // marketplaceInstallLocation falls through: depInfo isn't seeded, the
+  // materialize loop's `if (!info) continue` skips the root, and the user
+  // sees "Successfully installed" while nothing is cached.
+  if (isLocalPluginSource(entry.source) && !marketplaceInstallLocation) {
+    return {
+      ok: false,
+      reason: 'local-source-no-location',
+      pluginName: entry.name,
+    }
+  }
+  if (marketplaceInstallLocation) {
+    depInfo.set(pluginId, { entry, marketplaceInstallLocation })
+  }
+
+  const rootMarketplace = parsePluginIdentifier(pluginId).marketplace
+  const allowedCrossMarketplaces = new Set(
+    (rootMarketplace
+      ? (await getMarketplaceCacheOnly(rootMarketplace))
+          ?.allowCrossMarketplaceDependenciesOn
+      : undefined) ?? [],
+  )
+  const resolution = await resolveDependencyClosure(
+    pluginId,
+    async id => {
+      if (depInfo.has(id)) return depInfo.get(id)!.entry
+      if (id === pluginId) return entry
+      const info = await getPluginById(id)
+      if (info) depInfo.set(id, info)
+      return info?.entry ?? null
+    },
+    getEnabledPluginIdsForScope(settingSource),
+    allowedCrossMarketplaces,
+  )
+  if (!resolution.ok) {
+    return { ok: false, reason: 'resolution-failed', resolution }
+  }
+
+  // ── Policy guard for transitive dependencies ──
+  // The root plugin was already checked above, but any dependency in the
+  // closure could also be policy-blocked. Check before writing to settings
+  // so a non-blocked plugin can't pull in a blocked dependency.
+  for (const id of resolution.closure) {
+    if (id !== pluginId && isPluginBlockedByPolicy(id)) {
+      return {
+        ok: false,
+        reason: 'dependency-blocked-by-policy',
+        pluginName: entry.name,
+        blockedDependency: id,
+      }
+    }
+  }
+
+  // ── ACTION: write entire closure to settings in one call ──
+  const closureEnabled: Record<string, true> = {}
+  for (const id of resolution.closure) closureEnabled[id] = true
+  const { error } = updateSettingsForSource(settingSource, {
+    enabledPlugins: {
+      ...getSettingsForSource(settingSource)?.enabledPlugins,
+      ...closureEnabled,
+    },
+  })
+  if (error) {
+    return {
+      ok: false,
+      reason: 'settings-write-failed',
+      message: error.message,
+    }
+  }
+
+  // ── Materialize: cache each closure member ──
+  const projectPath = scope !== 'user' ? getCwd() : undefined
+  for (const id of resolution.closure) {
+    let info = depInfo.get(id)
+    // Root wasn't pre-seeded (caller didn't pass marketplaceInstallLocation
+    // for a non-local source). Fetch now; it's needed for the cache write.
+    if (!info && id === pluginId) {
+      const mktLocation = (await getPluginById(id))?.marketplaceInstallLocation
+      if (mktLocation) info = { entry, marketplaceInstallLocation: mktLocation }
+    }
+    if (!info) continue
+
+    let localSourcePath: string | undefined
+    const { source } = info.entry
+    if (isLocalPluginSource(source)) {
+      localSourcePath = validatePathWithinBase(
+        info.marketplaceInstallLocation,
+        source,
+      )
+    }
+    await cacheAndRegisterPlugin(
+      id,
+      info.entry,
+      scope,
+      projectPath,
+      localSourcePath,
+    )
+  }
+
+  clearAllCaches()
+
+  const depNote = formatDependencyCountSuffix(
+    resolution.closure.filter(id => id !== pluginId),
+  )
+  return { ok: true, closure: resolution.closure, depNote }
+}
+
+/**
+ * Result of a plugin installation operation
+ */
+export type InstallPluginResult =
+  | { success: true; message: string }
+  | { success: false; error: string }
+
+/**
+ * Parameters for installing a plugin from marketplace
+ */
+export type InstallPluginParams = {
+  pluginId: string
+  entry: PluginMarketplaceEntry
+  marketplaceName: string
+  scope?: 'user' | 'project' | 'local'
+  trigger?: 'hint' | 'user'
+}
+
+/**
+ * Install a single plugin from a marketplace with the specified scope.
+ * Interactive-UI wrapper around `installResolvedPlugin` — adds try/catch,
+ * analytics, and UI-style message formatting.
+ */
+export async function installPluginFromMarketplace({
+  pluginId,
+  entry,
+  marketplaceName,
+  scope = 'user',
+  trigger = 'user',
+}: InstallPluginParams): Promise<InstallPluginResult> {
+  try {
+    // Look up the marketplace install location for local-source plugins.
+    // Without this, plugins with relative-path sources fail from the
+    // interactive UI path (/plugin install) even though the CLI path works.
+    const pluginInfo = await getPluginById(pluginId)
+    const marketplaceInstallLocation = pluginInfo?.marketplaceInstallLocation
+
+    const result = await installResolvedPlugin({
+      pluginId,
+      entry,
+      scope,
+      marketplaceInstallLocation,
+    })
+
+    if (!result.ok) {
+      switch (result.reason) {
+        case 'local-source-no-location':
+          return {
+            success: false,
+            error: `Cannot install local plugin "${result.pluginName}" without marketplace install location`,
+          }
+        case 'settings-write-failed':
+          return {
+            success: false,
+            error: `Failed to update settings: ${result.message}`,
+          }
+        case 'resolution-failed':
+          return {
+            success: false,
+            error: formatResolutionError(result.resolution),
+          }
+        case 'blocked-by-policy':
+          return {
+            success: false,
+            error: `Plugin "${result.pluginName}" is blocked by your organization's policy and cannot be installed`,
+          }
+        case 'dependency-blocked-by-policy':
+          return {
+            success: false,
+            error: `Cannot install "${result.pluginName}": dependency "${result.blockedDependency}" is blocked by your organization's policy`,
+          }
+      }
+    }
+
+    // _PROTO_* routes to PII-tagged plugin_name/marketplace_name BQ columns.
+    // plugin_id kept in additional_metadata (redacted to 'third-party' for
+    // non-official) because dbt external_claude_code_plugin_installs.sql
+    // extracts $.plugin_id for official-marketplace install tracking. Other
+    // plugin lifecycle events drop the blob key — no downstream consumers.
+    logEvent('tengu_plugin_installed', {
+      _PROTO_plugin_name:
+        entry.name as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
+      _PROTO_marketplace_name:
+        marketplaceName as AnalyticsMetadata_I_VERIFIED_THIS_IS_PII_TAGGED,
+      plugin_id: (isOfficialMarketplaceName(marketplaceName)
+        ? pluginId
+        : 'third-party') as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
+      trigger:
+        trigger as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
+      install_source: (trigger === 'hint'
+        ? 'ui-suggestion'
+        : 'ui-discover') as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
+      ...buildPluginTelemetryFields(
+        entry.name,
+        marketplaceName,
+        getManagedPluginNames(),
+      ),
+      ...(entry.version && {
+        version:
+          entry.version as AnalyticsMetadata_I_VERIFIED_THIS_IS_NOT_CODE_OR_FILEPATHS,
+      }),
+    })
+
+    return {
+      success: true,
+      message: `✓ Installed ${entry.name}${result.depNote}. Run /reload-plugins to activate.`,
+    }
+  } catch (err) {
+    const errorMessage = err instanceof Error ? err.message : String(err)
+    logError(toError(err))
+    return { success: false, error: `Failed to install: ${errorMessage}` }
+  }
+}