feat: add wildcard CORS origin pattern matching for better-auth compatibility by Claude · Pull Request #1152 · objectstack-ai/framework

Claude · 2026-04-15T10:10:31Z

The Hono server plugin's CORS middleware did not support wildcard origin patterns like https://*.objectui.org,https://*.objectstack.ai used by better-auth's trustedOrigins configuration.

Changes

Pattern Matching Implementation

Added matchOriginPattern() and createOriginMatcher() functions to support wildcard patterns in CORS origins
Supports subdomain wildcards (https://*.objectui.org)
Supports port wildcards (http://localhost:*)
Supports comma-separated patterns (https://*.objectui.org,https://*.objectstack.ai)

CORS Middleware Enhancement

Enhanced CORS initialization to detect wildcard patterns and apply pattern matching
Backward compatible with exact origin matching
Works with both cors.origins option and CORS_ORIGIN environment variable

Testing & Documentation

Added comprehensive unit tests for pattern matching functions
Added integration tests for CORS middleware configuration
Updated README with CORS configuration examples

Usage

// Wildcard subdomain patterns
new HonoServerPlugin({
  cors: {
    origins: ['https://*.objectui.org', 'https://*.objectstack.ai'],
    credentials: true
  }
})

// Via environment variable
// CORS_ORIGIN="https://*.objectui.org,https://*.objectstack.ai"

- Add matchOriginPattern() and createOriginMatcher() functions to support wildcard patterns - Support subdomain wildcards (e.g., https://*.objectui.org) - Support port wildcards (e.g., http://localhost:*) - Support comma-separated patterns for better-auth compatibility - Add comprehensive unit tests for pattern matching - Update CORS middleware to use pattern matching for wildcard origins - Maintain backward compatibility with exact origin matching Agent-Logs-Url: https://github.com/objectstack-ai/framework/sessions/a7ac1ca8-a54d-49a5-8469-ec453eb41b8f Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Agent-Logs-Url: https://github.com/objectstack-ai/framework/sessions/a7ac1ca8-a54d-49a5-8469-ec453eb41b8f Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

vercel · 2026-04-15T10:10:37Z

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Project	Deployment	Actions	Updated (UTC)
objectstack-demo	Ready	Preview, Comment	Apr 15, 2026 10:11am
spec	Error		Apr 15, 2026 10:11am

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CodeQL found more than 20 potential problems in the proposed changes. Check the Files changed tab for more details.

Copilot

Pull request overview

Adds wildcard-capable CORS origin matching to @objectstack/plugin-hono-server so configurations like better-auth trustedOrigins (e.g., https://*.objectui.org, http://localhost:*) can be used safely and conveniently.

Changes:

Introduces wildcard origin matching helpers and wires them into the Hono CORS middleware setup.
Expands the plugin test suite with CORS-related coverage and updates the adapter mock to include rawApp.use.
Updates the plugin README with wildcard CORS configuration examples (options + env vars).

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

File	Description
packages/plugins/plugin-hono-server/src/pattern-matcher.test.ts	Adds unit tests for wildcard origin matching behavior (currently using local re-implementations).
packages/plugins/plugin-hono-server/src/hono-plugin.ts	Adds wildcard matching helpers and applies them when configuring `hono/cors` origin handling.
packages/plugins/plugin-hono-server/src/hono-plugin.test.ts	Updates mocks and adds CORS-related plugin init tests.
packages/plugins/plugin-hono-server/README.md	Documents wildcard CORS usage patterns and env var examples.

Copilot · 2026-04-15T10:28:05Z

+function matchOriginPattern(origin: string, pattern: string): boolean {
+    if (pattern === '*') return true;
+    if (pattern === origin) return true;
+
+    // Convert wildcard pattern to regex
+    // Escape special regex characters except *
+    const regexPattern = pattern
+        .replace(/[.+?^${}()|[\]\\]/g, '\\$&')  // Escape special chars
+        .replace(/\*/g, '.*');                    // Convert * to .*
+
+    const regex = new RegExp(`^${regexPattern}$`);
+    return regex.test(origin);
+}
+
+/**
+ * Create a CORS origin matcher function that supports wildcard patterns.
+ *
+ * @param patterns Single pattern, array of patterns, or comma-separated patterns
+ * @returns Function that returns the origin if it matches, or null/undefined
+ */
+function createOriginMatcher(
+    patterns: string | string[]
+): (origin: string) => string | undefined | null {
+    // Normalize to array
+    let patternList: string[];
+    if (typeof patterns === 'string') {
+        // Handle comma-separated patterns
+        patternList = patterns.includes(',')
+            ? patterns.split(',').map(s => s.trim()).filter(Boolean)
+            : [patterns];
+    } else {
+        patternList = patterns;
+    }
+
+    // Return matcher function
+    return (requestOrigin: string) => {
+        for (const pattern of patternList) {
+            if (matchOriginPattern(requestOrigin, pattern)) {
+                return requestOrigin;
+            }
+        }
+        return null;
+    };
+}


This test file re-implements matchOriginPattern/createOriginMatcher locally instead of importing the production implementation, so the tests can pass even if the real CORS matcher in hono-plugin.ts is broken or diverges over time. Extract these helpers into a shared module (e.g., src/pattern-matcher.ts) and import them from both hono-plugin.ts and this test to ensure the tests exercise the shipped behavior.

Copilot · 2026-04-15T10:28:05Z

+ * Check if an origin matches a pattern with wildcards.
+ * Supports patterns like:
+ * - "https://*.example.com" - matches any subdomain
+ * - "http://localhost:*" - matches any port
+ * - "https://*.objectui.org,https://*.objectstack.ai" - comma-separated patterns
+ *
+ * @param origin The origin to check (e.g., "https://app.example.com")
+ * @param pattern The pattern to match against (supports * wildcard)


The docstring for matchOriginPattern() says it supports comma-separated patterns, but the function matches a single pattern and does not split on commas (comma handling is done in createOriginMatcher). Please update this comment to avoid misleading future readers about what this function accepts.

Suggested change

* Check if an origin matches a pattern with wildcards.

* Supports patterns like:

* - "https://*.example.com" - matches any subdomain

* - "http://localhost:*" - matches any port

* - "https://*.objectui.org,https://*.objectstack.ai" - comma-separated patterns

*

* @param origin The origin to check (e.g., "https://app.example.com")

* @param pattern The pattern to match against (supports * wildcard)

* Check if an origin matches a single pattern with wildcards.

* Supports patterns like:

* - "https://*.example.com" - matches any subdomain

* - "http://localhost:*" - matches any port

*

* @param origin The origin to check (e.g., "https://app.example.com")

* @param pattern The single pattern to match against (supports * wildcard)

Copilot · 2026-04-15T10:28:05Z

+/**
+ * Check if an origin matches a pattern with wildcards.
+ * Supports patterns like:
+ * - "https://*.example.com" - matches any subdomain
+ * - "http://localhost:*" - matches any port
+ * - "https://*.objectui.org,https://*.objectstack.ai" - comma-separated patterns
+ *
+ * @param origin The origin to check (e.g., "https://app.example.com")
+ * @param pattern The pattern to match against (supports * wildcard)
+ * @returns true if origin matches the pattern
+ */
+function matchOriginPattern(origin: string, pattern: string): boolean {
+    if (pattern === '*') return true;
+    if (pattern === origin) return true;
+
+    // Convert wildcard pattern to regex
+    // Escape special regex characters except *
+    const regexPattern = pattern
+        .replace(/[.+?^${}()|[\]\\]/g, '\\$&')  // Escape special chars
+        .replace(/\*/g, '.*');                    // Convert * to .*
+
+    const regex = new RegExp(`^${regexPattern}$`);
+    return regex.test(origin);
+}
+
+/**
+ * Create a CORS origin matcher function that supports wildcard patterns.
+ *
+ * @param patterns Single pattern, array of patterns, or comma-separated patterns
+ * @returns Function that returns the origin if it matches, or null/undefined
+ */
+function createOriginMatcher(
+    patterns: string | string[]
+): (origin: string) => string | undefined | null {
+    // Normalize to array
+    let patternList: string[];
+    if (typeof patterns === 'string') {
+        // Handle comma-separated patterns
+        patternList = patterns.includes(',')
+            ? patterns.split(',').map(s => s.trim()).filter(Boolean)
+            : [patterns];
+    } else {
+        patternList = patterns;
+    }
+
+    // Return matcher function
+    return (requestOrigin: string) => {
+        for (const pattern of patternList) {
+            if (matchOriginPattern(requestOrigin, pattern)) {
+                return requestOrigin;
+            }
+        }
+        return null;
+    };
+}


matchOriginPattern()/createOriginMatcher() are embedded in hono-plugin.ts, duplicating logic and making it hard to reuse or unit test the real implementation (tests currently copy/paste their own version). Move these helpers into a dedicated module and import them here; this reduces drift risk and keeps hono-plugin.ts focused on plugin wiring.

Copilot · 2026-04-15T10:28:06Z

+function createOriginMatcher(
+    patterns: string | string[]
+): (origin: string) => string | undefined | null {
+    // Normalize to array
+    let patternList: string[];
+    if (typeof patterns === 'string') {
+        // Handle comma-separated patterns
+        patternList = patterns.includes(',')
+            ? patterns.split(',').map(s => s.trim()).filter(Boolean)
+            : [patterns];
+    } else {
+        patternList = patterns;
+    }
+
+    // Return matcher function
+    return (requestOrigin: string) => {
+        for (const pattern of patternList) {
+            if (matchOriginPattern(requestOrigin, pattern)) {
+                return requestOrigin;
+            }
+        }
+        return null;
+    };


createOriginMatcher() compiles a new RegExp on every request for every pattern (via matchOriginPattern()), which is unnecessary overhead under load. Consider pre-compiling patterns once when building the matcher (e.g., convert patterns to RegExp instances up front) and then only running regex.test() per request.

Claude AI and others added 2 commits April 15, 2026 10:08

docs: add CORS wildcard pattern documentation to Hono plugin README

1ef7843

Agent-Logs-Url: https://github.com/objectstack-ai/framework/sessions/a7ac1ca8-a54d-49a5-8469-ec453eb41b8f Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Claude AI assigned Claude and hotlong Apr 15, 2026

Claude created this pull request from a session on behalf of hotlong April 15, 2026 10:10 View session

github-actions bot added size/m documentation Improvements or additions to documentation tests labels Apr 15, 2026

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hotlong marked this pull request as ready for review April 15, 2026 10:23

Copilot AI review requested due to automatic review settings April 15, 2026 10:23

hotlong merged commit 1f4dabd into main Apr 15, 2026
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Copilot AI mentioned this pull request Apr 15, 2026

fix: resolve CI test failures in MetadataPlugin, auth trustedOrigins, client Hono test, and docs build #1153

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feat: add wildcard CORS origin pattern matching for better-auth compatibility#1152

feat: add wildcard CORS origin pattern matching for better-auth compatibility#1152
hotlong merged 2 commits intomainfrom
claude/add-better-auth-cors-support

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Claude AI commented Apr 15, 2026

Changes

Pattern Matching Implementation

CORS Middleware Enhancement

Testing & Documentation

Usage

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