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crypto.subtle.digest(\"SHA-256\", copy));\n}\nfunction pdfLike(bytes: Uint8Array): boolean {\n return bytes.byteLength > 1000 && new TextDecoder().decode(bytes.slice(0, 8)).startsWith(\"%PDF-\");\n}\nfunction cookieLine(headers: Headers): string {\n const h = headers as Headers & { getSetCookie?: () => string[] };\n const all = h.getSetCookie?.() ?? (headers.get(\"set-cookie\") ? [headers.get(\"set-cookie\")!] : []);\n return all.map((s) => s.split(\";\", 1)[0]).filter(Boolean).join(\"; \");\n}\nfunction mergeCookies(a: string, b: string): string {\n const m = new Map();\n for (const c of [a, b]) for (const part of c.split(/;\\s*/)) {\n const i = part.indexOf(\"=\"); if (i > 0) m.set(part.slice(0, i), part.slice(i + 1));\n }\n return [...m].map(([k, v]) => `${k}=${v}`).join(\"; \");\n}\nasync function responseBytes(res: Response): Promise {\n return new Uint8Array(await res.arrayBuffer());\n}\nasync function verify(label: string, url: string, bytes: Uint8Array) {\n const digest = await sha256(bytes);\n return {\n label, url, bytes: bytes.byteLength, sha256: digest,\n pdf_like: pdfLike(bytes),\n exact_size: bytes.byteLength === TARGET.bytes,\n exact_sha256: digest === TARGET.sha256,\n exact: bytes.byteLength === TARGET.bytes && digest === TARGET.sha256,\n };\n}\n\nasync function fetchStatic() {\n const res = await fetch(HORAENG, {\n redirect: \"follow\",\n headers: { \"user-agent\": UA, \"accept\": \"application/pdf,*/*;q=0.8\", \"accept-language\": \"ko-KR,ko;q=0.9\" },\n });\n if (!res.ok) throw new Error(`Horaeng HTTP ${res.status}`);\n const bytes = await responseBytes(res);\n return { bytes, audit: await verify(\"horaeng_static\", res.url || HORAENG, bytes) };\n}\n\nasync function qFetch(url: string, init: RequestInit = {}, cookie = \"\") {\n const headers = new Headers(init.headers);\n headers.set(\"user-agent\", UA);\n headers.set(\"accept-language\", \"ko-KR,ko;q=0.9\");\n if (cookie) headers.set(\"cookie\", cookie);\n const res = await fetch(url, { ...init, headers, redirect: \"follow\" });\n return { res, cookie: mergeCookies(cookie, cookieLine(res.headers)) };\n}\n\nasync function fetchQNet() {\n let cookie = \"\";\n let x = await qFetch(`${QBASE}/man001.do?gSite=L&gId=51`, {}, cookie); cookie = x.cookie;\n\n const detailUrl = `${QBASE}/cst003.do?id=cst00302&gSite=L&gId=51`;\n const form = new URLSearchParams({\n page: \"1\", schType: \"\", schText: \"\", artlSeq: TARGET.artlSeq,\n boardId: \"Q004\", code: \"1008\", menuType: \"cst00309\", cst: \"\",\n });\n x = await qFetch(detailUrl, {\n method: \"POST\",\n body: form,\n headers: { \"content-type\": \"application/x-www-form-urlencoded\", referer: detailUrl },\n }, cookie); cookie = x.cookie;\n if (!x.res.ok) throw new Error(`Q-Net detail HTTP ${x.res.status}`);\n const detail = await x.res.text();\n\n let filePath = TARGET.filePath, fileName = TARGET.filename, fileSeq = TARGET.fileSeq;\n const re = /fileDown\\('([^']+)'\\s*,\\s*'([^']+)'\\s*,\\s*'(\\d+)'\\)/g;\n for (const m of detail.matchAll(re)) {\n if (m[2].includes(\"자연과학개론\")) { filePath = m[1]; fileName = m[2]; fileSeq = m[3]; break; }\n }\n const q = new URLSearchParams({\n id: \"cst00302s01\", gSite: \"L\", gId: \"51\", fileCode: \"R001\",\n filePath, fileName, fileSeq, artlSeq: TARGET.artlSeq, href: \"0\",\n });\n const dl = `${QBASE}/cst003.do?${q.toString()}`;\n x = await qFetch(dl, { headers: { referer: detailUrl, accept: \"application/pdf,*/*;q=0.8\" } }, cookie);\n if (!x.res.ok) throw new Error(`Q-Net attachment HTTP ${x.res.status}`);\n const bytes = await responseBytes(x.res);\n return { bytes, audit: await verify(\"qnet_official_session\", x.res.url || dl, bytes), resolved: { filePath, fileName, fileSeq } };\n}\n\nasync function acquire() {\n const attempts: any[] = [];\n for (const fn of [fetchStatic, fetchQNet]) {\n try {\n const got: any = await fn();\n attempts.push(got.audit);\n if (got.audit.exact) {\n const key = \"pb/2022-r59-natural-science-a/exact.pdf\";\n await blob.set(key, got.bytes);\n const provenance = {\n accepted_at: new Date().toISOString(), target: TARGET, accepted_from: got.audit.label,\n audit: got.audit, resolved: got.resolved ?? null, prior_attempts: attempts,\n };\n await blob.setJSON(\"pb/2022-r59-natural-science-a/provenance.json\", provenance);\n return { ok: true, key, provenance, bytes: got.bytes };\n }\n } catch (e) {\n attempts.push({ label: fn.name, error: String(e) });\n }\n }\n return { ok: false, attempts };\n}\n\nexport default async function (req: Request): Promise {\n const result = await acquire();\n if (!result.ok) return Response.json({ ok: false, target: TARGET, attempts: result.attempts }, { status: 424 });\n const url = new URL(req.url);\n if (url.searchParams.get(\"download\") === \"1\") {\n return new Response(result.bytes, {\n headers: {\n \"content-type\": \"application/pdf\",\n \"content-disposition\": `attachment; filename*=UTF-8''${encodeURIComponent(TARGET.filename)}`,\n \"x-pb-sha256\": TARGET.sha256,\n \"x-pb-bytes\": String(TARGET.bytes),\n },\n });\n }\n return Response.json({ ok: true, target: TARGET, provenance: result.provenance, download: `${url.origin}${url.pathname}?download=1` });\n}\n",[],[223],["D",1789010997497],{"_11":12,"_122":70},{"_11":12,"_117":118,"_69":70,"_30":68,"_119":120,"_121":24},{"_38":108,"_13":16,"_32":35,"_109":72,"_110":-5,"_111":-5,"_112":-5,"_113":-5,"_114":-5,"_115":14,"_116":12},"ctx",{"_53":-5,"_141":265,"_266":267,"_268":269,"_270":24,"_271":24,"_272":24,"_273":85,"_274":-5,"_275":-7,"_276":-7,"_277":26,"_278":24,"_279":24,"_280":-5,"_281":24,"_282":24,"_283":24,"_284":-5},"ENV",{"_236":237,"_238":239,"_240":16,"_241":242,"_243":244,"_245":246,"_247":248,"_249":250,"_251":252,"_253":254,"_255":256,"_257":258,"_259":260,"_261":262,"_263":264},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

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