[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_169":170,"_171":172},"routes/_app.x.$handle.$name",{"_11":12,"_13":14,"_15":16,"_18":19,"_17":-7,"_128":-5,"_20":129,"_22":130,"_131":132,"_133":134,"_25":135,"_24":-5,"_136":-5,"_137":-5,"_138":54,"_139":140,"_141":54,"_142":-5,"_143":-5,"_144":145},"routes/_app.x.$handle.$name.branch.$branch.code.$",{"_11":12,"_13":14,"_15":16,"_17":-7,"_18":19,"_20":21,"_22":23,"_24":-7,"_25":26,"_27":-5,"_28":-5,"_29":-5,"_30":-5,"_31":-5},"handle","pomdtr","name","password_auth","branchName","main","version","path","","project",{"_34":74,"_13":14,"_46":75,"_76":-5,"_77":45,"_78":79,"_80":79,"_81":-5,"_82":-5,"_83":84,"_85":-5,"_86":45,"_87":-5,"_88":-5,"_89":90,"_91":92,"_93":-5,"_94":-5,"_95":-5,"_96":-5,"_97":98,"_99":98,"_100":101,"_102":101,"_103":101,"_104":98,"_105":98,"_106":107,"_108":109,"_110":111,"_112":54},"tree",[65,66],"file","contents",[32,33],"upstream","pull","ahead","behind","envVars",{"_34":57,"_13":58,"_37":59,"_39":-5,"_40":41,"_42":60,"_44":45,"_46":61,"_17":62,"_49":24,"_51":63,"_53":54,"_55":-5,"_18":64},{"_34":35,"_13":36,"_37":38,"_39":-5,"_40":41,"_42":43,"_44":45,"_46":47,"_17":48,"_49":50,"_51":52,"_53":54,"_55":-5,"_18":56},"id","40b2d868-7ea1-11f0-b61b-0224a6c84d84","main.tsx","fileId","e85794e2-277f-11f0-b46e-569c3dd06744","parentId","branchId","e85571b2-277f-11f0-b46e-569c3dd06744","branchVersion",90,"latest",true,"createdAt",["D",1755789148862],89,"fileType","script","content","import {\n deleteCookie,\n getCookies,\n setCookie,\n} from \"https://deno.land/std/http/cookie.ts\";\nimport { parseVal } from \"https://esm.town/v/std/utils/index.ts\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite?v=6\";\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(\n tableName: string,\n valSlug: string,\n): 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:\n `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(\n tableName: string,\n sessionID: string,\n valSlug: string,\n): 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\nconst loginPage = `\n \n \n \n \n \n

This website is protected behind a password.

\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 verifyPassword: (password: string) => boolean | Promise;\n sessionTable?: string;\n};\n\nconst cookieName = \"auth_session\";\n\nexport function passwordAuth(next, options?: PasswordAuthOptions) {\n const sessionTable = options?.sessionTable || \"password_auth_session\";\n return async (req: Request) => {\n const val = parseVal(Deno.env.get(\"VALTOWN_ENTRYPOINT\"));\n const valSlug = `${val.username}/${val.name}`;\n\n const url = new URL(req.url);\n if (url.pathname == \"/signin\" && req.method == \"GET\") {\n return html(loginPage);\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 (!await options.verifyPassword(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 if (req.headers.has(\"Authorization\")) {\n const requestToken = req.headers.get(\"Authorization\").replace(\n \"Bearer \",\n \"\",\n ).trim();\n if (!await options.verifyPassword(requestToken)) {\n return new Response(null, {\n status: 403,\n });\n }\n return next(req);\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 };\n}","deleted",false,"label",[36],"e8579ad2-277f-11f0-b46e-569c3dd06744","README.md","e8579ba4-277f-11f0-b46e-569c3dd06744",1,["D",1709738624996],0,"# 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## Usage\n\n```ts\nimport { passwordAuth } from \"https://esm.town/v/pomdtr/password_auth?v=84\";\n\nexport default passwordAuth(() => {\n return new Response(\"OK\");\n}, { verifyPassword: (password) => password == Deno.env.get(\"VAL_PASSWORD\") });\n```\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?v=84\";\nimport { verifyToken } from \"https://esm.town/v/pomdtr/verifyToken\";\n\nexport default passwordAuth(() => {\n return new Response(\"OK\");\n}, { verifyPassword: verifyToken });\n```\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 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Code