${_title}

\n ${content}\n `;\n },\n }).toString(),\n {\n ...init,\n headers: {\n ...init?.headers,\n \"Content-Type\": \"text/html\",\n },\n },\n );\n },\n ...options,\n };\n const HANDLER_NAME = `@${handle}/${name}`;\n const ENDPOINT = getValEndpointFromName(HANDLER_NAME);\n\n const rootPath = (_rootPath.startsWith(\"/\")\n ? _rootPath\n : `/${_rootPath}`).replace(/\\/+$/, \"\");\n\n const templates = {\n ...defaultTemplates,\n ...options.templates,\n };\n\n function verifyAuthToken(token: string, req: Request) {\n return verifyThirdParty(token, {\n issuer: `@${handle}/authId`,\n audience: HANDLER_NAME,\n async custom(payload) {\n const author = payload.iss.split(\"/\")[0];\n return {\n scope: [`${author}/authId/id`],\n };\n },\n ...verify,\n });\n }\n\n return async (context: Context, next: () => void) => {\n const req = getRequestContextRequest(context);\n let { pathname, searchParams: qs } = new URL(req.url);\n pathname = pathname.replace(/\\/+$/, \"\").slice(rootPath.length);\n\n const cookie = getAuthCookie(req);\n\n let payload;\n try {\n payload = cookie && await verifyAuthToken(cookie, req);\n } catch (e) {\n console.log(\"cookie token validation failed\", e);\n }\n\n if (payload && pathname === \"/login\") {\n return Response.redirect(ENDPOINT + rootPath);\n }\n\n if (pathname === \"/login\" || (pathname === \"/logout\" && req.method === \"POST\")) {\n if (req.method === \"GET\") {\n const token = qs.get(\"token\");\n const clientToken = qs.get(\"clientToken\");\n qs.delete(\"token\");\n qs.delete(\"clientToken\");\n\n let failReason: RawHTML | undefined;\n\n const tokenDecoded = token && await decode(token);\n\n const [tokenPayload, clientTokenPayload] = await Promise.all([\n token && verifyAuthToken(token, req).catch((e) => {\n console.log(\"error while parsing token qs\", e);\n failReason = html`token validation failed: ${e.message}`;\n }),\n tokenDecoded && clientToken && verifyThirdParty(clientToken, {\n audience: [HANDLER_NAME, tokenDecoded.iss],\n issuer: HANDLER_NAME,\n custom: {\n scope: `${HANDLER_NAME}/requestAuth`,\n maxUses: 1,\n },\n }).catch((e) => {\n console.log(\"error validating clientToken\", e, clientToken);\n failReason = html`clientToken validation failed: ${e.message}`;\n }),\n ]);\n\n if (tokenPayload && clientTokenPayload) {\n if (tokenPayload.clientTokenId === clientTokenPayload.jti) {\n const { searchParams } = new URL(ENDPOINT + clientTokenPayload.returnTo.slice(HANDLER_NAME.length));\n const res = new Response(undefined, {\n status: 302,\n headers: {\n Location: ENDPOINT + (searchParams.get(\"returnTo\") || rootPath),\n },\n });\n setAuthCookie(res, token);\n return res;\n }\n failReason = html`clientToken validation failed: client token id mismatch`;\n }\n\n if (token || clientToken) {\n return createResponse(context, templates.failedLogin(failReason), {\n status: 403,\n });\n }\n return createResponse(context, templates.signInForm);\n } else if (req.method === \"POST\") {\n const formData = await req.formData();\n\n const username = formData.get(\"username\")?.trim().replace(/^\\@/, \"\").match(/^\\w+$/)?.[0];\n const val = \"authId\"; // formData.get(\"val\")?.trim().match(/^\\w+$/)?.[0];\n\n if (!(username && val)) {\n return createResponse(context, templates.signInForm, {\n status: 400,\n });\n }\n\n const name = `@${username}/${val}`;\n const authEndpoint = getValEndpointFromName(name);\n const returnToPath = (qs.get(\"returnTo\") || \"\").replace(/\\/*(login|logout)\\/*$/, \"\");\n const returnQS = new URLSearchParams();\n\n if (returnToPath.slice(1)) {\n returnQS.set(\"returnTo\", rootPath + returnToPath);\n }\n\n const newPayload = {\n iss: HANDLER_NAME,\n scope: `${HANDLER_NAME}/requestAuth`,\n aud: [name, HANDLER_NAME],\n returnTo: HANDLER_NAME + rootPath + \"/login\" + (returnQS.size ? `?${returnQS}` : \"\"),\n };\n\n newPayload.requestScope = requestScope instanceof Function\n ? await requestScope(req, name)\n : requestScope;\n\n const token = await generate(newPayload, \"15m\");\n\n const authQS = new URLSearchParams();\n authQS.set(\"clientToken\", token);\n\n return Response.redirect(`${authEndpoint}?${authQS}`);\n }\n } else if (pathname === \"/logout\" && req.method !== \"POST\") {\n const res = await createResponse(context, templates.loggedOut);\n setAuthCookie(res, undefined);\n return res;\n }\n\n if (!payload && !optional) {\n const qs = new URLSearchParams();\n pathname && qs.set(\"returnTo\", pathname);\n return Response.redirect(`${ENDPOINT}${rootPath}/login${qs.size ? `?${qs}` : \"\"}`);\n }\n\n context.set(\"token\", cookie);\n context.set(\"auth\", payload);\n\n return next();\n };\n}\n\nexport const signInFormBase = html`\n \n`;\n\nexport const signInForm = html`\n ${signInFormBase}\n \n

\n If you haven't set up the required Vals jwks and authId yet, there is a guide at\n \n @postpostscript/authIdUserGuide\n \n

\n`;\n\nexport const defaultTemplates = {\n signInForm,\n\n loggedOut: html`\n

\n You are now logged out! You can close this tab.\n

\n\n ${signInForm}\n `,\n\n failedLogin: (reason: unknown) =>\n html`\n \n\n ${signInForm}\n `,\n};\n\nexport function userDisplay(payload: JWTPayload) {\n return payload.sub.replace(/\\/.*/, \"\");\n}\n\nexport function userActionsDisplay(\n payload: JWTPayload,\n {\n order = [\"language\", \"profile\", \"username\", \"logout\"],\n parts = {} as Record,\n } = {},\n) {\n const username = userDisplay(payload);\n\n const _parts: Record = {\n language: html`\n \n Signed in as\n \n `,\n profile: html`\n \n \n ${Profile(username)}\n \n \n `,\n username: html`\n \n \n ${username}\n \n \n `,\n logout: html`\n \n \n Log Out\n \n \n `,\n ...parts,\n };\n\n return html`\n \n ${order.map(key => _parts[key])}\n \n `;\n}\n\nexport type AuthContextVariables = {\n token: string;\n auth: JWTPayload;\n};\nexport type HonoEnv = {\n Variables: AuthContextVariables;\n};\nexport type HonoEnvOptional = {\n Variables: Partial;\n};","deleted","label",[98],"permalink","https://www.val.town/x/pomdtr/authMiddleware/code/main.tsx","extension","actionData","errors"]