[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_176":177,"_178":179},"routes/_app.x.$handle.$name",{"_102":101,"_32":49,"_110":88,"_27":111,"_13":14,"_112":-5,"_11":113,"_114":115,"_116":117,"_118":119,"_120":121,"_21":-5,"_122":123,"_124":125,"_126":25,"_127":128,"_129":25,"_130":-5,"_131":-5,"_132":133},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_47":48,"_32":49,"_36":50,"_51":-5,"_52":53,"_54":55,"_56":55,"_57":-5,"_58":-5,"_18":59,"_60":-5,"_61":53,"_62":-5,"_63":-5,"_64":14,"_65":66,"_67":-5,"_68":-5,"_69":-5,"_70":-5,"_71":72,"_73":72,"_74":75,"_76":75,"_77":75,"_78":72,"_79":72,"_80":81,"_82":83,"_84":85,"_86":25},"version",1,"changes",[19,20],"aiChatInfo","userId",{"_21":41,"_23":-7,"_24":25,"_26":25,"_27":42,"_29":42},{"_21":22,"_23":-7,"_24":25,"_26":25,"_27":28,"_29":28},"file",{"_30":31,"_32":28,"_33":21,"_34":35,"_36":37,"_38":14,"_39":40,"_24":25},"previous","deleted",false,"deletedHere","path","README.md","latestPath","fileId","16c8d39e-25f1-11f0-ad23-569c3dd06744","name","fileType","content","# Password Auth Middleware\n\nProtect your vals behind a password. Use session cookies to persist authentication.\n\n![6ed0648ae8813e958dbe79468572cb52f578239c0fae55857a13660beebdc5fd.png](https://imagedelivery.net/iHX6Ovru0O7AjmyT5yZRoA/36c1dc4f-4e19-457b-ad89-0bf139754e00/public)\n\n## Demo\n\nSee @pomdtr/password_auth_test\n\n## Usage\n\nIf you want to use an [api token](https://www.val.town/settings/api) to authenticate: \n\n```ts\nimport { passwordAuth } from \"https://esm.town/v/pomdtr/password_auth\";\n\nexport default passwordAuth(() => {\n return new Response(\"OK\");\n});\n```\n\nOr if you prefer to use a string:\n\n```ts\nimport { passwordAuth } from \"https://esm.town/v/pomdtr/password_auth\";\n\nexport default passwordAuth(() => {\n return new Response(\"OK\");\n}, { password: Deno.env.get(\"MY_PASSWORD\") });\n```\n\nOr if you want to share your val with someone without sharing your main password, you can set multiple ones\n\n```ts\nimport { passwordAuth } from \"https://esm.town/v/pomdtr/password_auth\";\n\nexport default passwordAuth(() => {\n return new Response(\"OK\");\n}, { password: [Deno.env.get(\"MY_PASSWORD\"), Deno.env.get(\"STEVE_PASSWORD\")] });\n```\n\nNote that authenticating using your api token is always an option.\n\n## TODO\n\n- [x] allow to authenticate using a val town token\n- [ ] add a way to send an email to ask a password from the val owner\n- [ ] automatically extend the session\n- [ ] automatically remove expired sessions\n\n## FAQ\n\n> How to sign out ?\n\nNavigate to `/signout`.\n\nMigrated from folder: Archive/password_auth","createdAt",["D",1709748965831],"branchVersion","branchId","16c6a970-25f1-11f0-ad23-569c3dd06744",{"_30":43,"_32":42,"_33":44,"_34":45,"_36":46,"_38":14,"_39":40,"_24":25},"main.tsx","16c8c8e0-25f1-11f0-ad23-569c3dd06744","script","import { deleteCookie, getCookies, setCookie } from \"https://deno.land/std/http/cookie.ts\";\nimport { inferRequestVal } from \"https://esm.town/v/andreterron/inferRequestVal?v=2\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite?v=4\";\nimport { html } from \"https://esm.town/v/stevekrouse/html?v=5\";\nimport { zip } from \"npm:lodash-es\";\nimport { nanoid } from \"npm:nanoid\";\n\ntype Session = {\n id: string;\n expiresAt: number;\n};\n\nasync function createSessionTable(tableName: string) {\n await sqlite.execute(`CREATE TABLE ${tableName} (\n id TEXT NOT NULL PRIMARY KEY,\n expires_at INTEGER NOT NULL,\n val_slug STRING NOT NULL\n );`);\n}\n\nasync function createSession(tableName: string, valSlug: string): Promise {\n try {\n const expires_at = new Date();\n expires_at.setDate(expires_at.getDate() + 7);\n const session: Session = { id: nanoid(), expiresAt: expires_at.getTime() };\n await sqlite.execute({\n sql: `INSERT INTO ${tableName} (id, val_slug, expires_at) VALUES (?, ?, ?)`,\n args: [session.id, valSlug, session.expiresAt],\n });\n return session;\n } catch (e) {\n if (e.message.includes(\"no such table\")) {\n await createSessionTable(tableName);\n return createSession(tableName, valSlug);\n }\n\n throw e;\n }\n}\n\nasync function getSession(tableName: string, sessionID: string, valSlug: string): Promise {\n try {\n const { rows, columns } = await sqlite.execute({\n sql: `SELECT * FROM ${tableName} WHERE id = ? AND val_slug = ?`,\n args: [sessionID, valSlug],\n });\n\n if (rows.length == 0) {\n return null;\n }\n\n return Object.fromEntries(zip(columns, rows.at(0))) as Session;\n } catch (e) {\n if (e.message.includes(\"no such table\")) {\n return null;\n }\n\n throw e;\n }\n}\n\nasync function fetchUser(token: string): Promise<{ id: string }> {\n const resp = await fetch(\"https://api.val.town/v1/me\", {\n headers: {\n Authorization: `Bearer ${token}`,\n },\n });\n\n if (resp.status !== 200) {\n throw new Error(\"Could not fetch user\");\n }\n\n return resp.json();\n}\n\nasync function verifyApiToken(token: string) {\n try {\n const [currentUser, requestUser] = await Promise.all([fetchUser(Deno.env.get(\"valtown\")), fetchUser(token)]);\n return currentUser.id == requestUser.id;\n } catch (_) {\n return false;\n }\n}\n\nconst loginPage = (handle) =>\n `\n \n \n \n \n \n

This val is protected by a password.

To access it, you'll need to get one from @${handle}.

\n \n

\n \n`;\n\nexport function redirect(location: string): Response {\n return new Response(null, {\n headers: {\n location,\n },\n status: 302,\n });\n}\n\ntype Handler = (req?: Request) => Response | Promise;\n\ntype PasswordAuthOptions = {\n password: string | string[];\n sessionTable?: string;\n};\n\nconst cookieName = \"auth_session\";\n\nexport function passwordAuth(next, options: PasswordAuthOptions) {\n let passwords: string[];\n if (!options?.password) {\n passwords = [];\n } else if (typeof options?.password == \"string\") {\n passwords = [options.password];\n } else {\n passwords = options.password;\n }\n\n const sessionTable = options?.sessionTable || \"password_auth_session\";\n return async (req: Request) => {\n const val = inferRequestVal(req);\n const valSlug = `${val.handle}/${val.name}`;\n\n const url = new URL(req.url);\n if (url.pathname == \"/signin\" && req.method == \"GET\") {\n return html(loginPage(val.handle));\n }\n\n if (url.pathname == \"/signin\" && req.method == \"POST\") {\n const formData = await req.formData();\n const password = formData.get(\"password\") as string;\n if (!passwords.includes(password) && !(await verifyApiToken(password))) {\n return new Response(\"Unauthorized\", {\n status: 403,\n });\n }\n const session = await createSession(sessionTable, valSlug);\n const res = redirect(url.searchParams.get(\"redirect\") || \"/\");\n setCookie(res.headers, {\n name: cookieName,\n value: session.id,\n maxAge: session.expiresAt,\n httpOnly: true,\n secure: true,\n // to work in val.town iframes\n sameSite: \"None\",\n });\n\n return res;\n }\n\n if (url.pathname == \"/signout\") {\n const res = redirect(\"/signin\");\n deleteCookie(res.headers, cookieName);\n return res;\n }\n\n const sessionID = getCookies(req.headers)[cookieName];\n if (!sessionID) {\n return redirect(\"/signin\");\n }\n\n const session = await getSession(sessionTable, sessionID, valSlug);\n if (!session) {\n const res = redirect(`/signin`);\n deleteCookie(res.headers, cookieName);\n return res;\n }\n\n if (session.expiresAt < Date.now()) {\n const res = redirect(`/signin`);\n deleteCookie(res.headers, cookieName);\n return res;\n }\n\n return next(req);\n 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