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AND exp < ?`,args:[DEPLOYMENT_DIGEST,now]}); await sqlite.execute({sql:`INSERT INTO ${table}(scope,nonce,exp) VALUES (?,?,?)`,args:[DEPLOYMENT_DIGEST,nonce,exp]}); return true; } catch { return false; } }\nasync function verifyProviderRequest(req:any,op:string):Promise{ try { const e=req?.envelope, sig=req?.signature; if(!e||typeof sig!==\"string\"||e.v!==9||e.op!==op||e.deployment_digest!==DEPLOYMENT_DIGEST) return null; if(typeof e.iat!==\"number\"||typeof e.exp!==\"number\") return null; const now=Math.floor(Date.now()/1000), iat=e.iat, exp=e.exp; if(!Number.isInteger(iat)||!Number.isInteger(exp)||iat>now+30||exp300||!isNonce(e.nonce)) return null; if(!await ed.verifyAsync(b64uToBytes(sig),te.encode(canon(e)),b64uToBytes(BROKER_PUBLIC))) return null; if(!await consume(\"v092_replay\",e.nonce,exp)) return null; return e.body&&typeof e.body===\"object\"&&!Array.isArray(e.body)?e.body:null; } catch { return null; } }\nasync function verifyGrant(grant:string,permitDigest:string):Promise{ try { const p=grant.split(\".\"); if(p.length!==3||p[0]!==\"ag4\") return null; if(!await ed.verifyAsync(b64uToBytes(p[2]),te.encode(p[1]),b64uToBytes(APPROVER_PUBLIC))) return null; const g=JSON.parse(td.decode(b64uToBytes(p[1]))); if(g.v!==4||g.broker_audience!==BROKER_AUDIENCE||g.deployment_digest!==DEPLOYMENT_DIGEST||g.permit_body_digest!==permitDigest) return null; if(typeof g.iat!==\"number\"||typeof g.exp!==\"number\") return null; const now=Math.floor(Date.now()/1000), iat=g.iat, exp=g.exp; if(!Number.isInteger(iat)||!Number.isInteger(exp)||iat>now+30||exp300||!isNonce(g.nonce)) return null; if(!await consume(\"v092_grants\",g.nonce,exp)) return null; return g; } catch { return null; } }\nasync function identity(){ const sp=await ed.getPublicKeyAsync(await roleSeed(\"signer\")); const wp=await ed.getPublicKeyAsync(await roleSeed(\"witness\")); return {v:9,protocol_revision:PROTOCOL_REVISION,deployment_digest:DEPLOYMENT_DIGEST,provider_family:PROVIDER_FAMILY,provider_id:PROVIDER_ID,signer_public_key:bytesToB64u(sp),signer_key_id:await keyId(sp),witness_public_key:bytesToB64u(wp),witness_key_id:await keyId(wp)}; }\nasync function observe(body:any){ const seq=body?.seq, head=body?.head; if(typeof seq!==\"number\"||typeof head!==\"string\"||!Number.isInteger(seq)||seq<1||!isHex64(head)) throw new Error(\"REJECT\"); await ensure(); const rows=await sqlite.execute({sql:\"SELECT seq,head,receipt_hash,previous_receipt_hash,observed_at,signature FROM v092_witness WHERE deployment_digest=? ORDER BY seq DESC LIMIT 1\",args:[DEPLOYMENT_DIGEST]}); const last=(rows.rows||[])[0] as any; if(last&&Number(last.seq)===seq){ if(String(last.head)!==head) throw new Error(\"REJECT\"); const pub=await ed.getPublicKeyAsync(await roleSeed(\"witness\")); return {v:9,deployment_digest:DEPLOYMENT_DIGEST,provider_family:PROVIDER_FAMILY,provider_id:PROVIDER_ID,key_id:await keyId(pub),seq,head,previous_receipt_hash:String(last.previous_receipt_hash),observed_at:Number(last.observed_at),signature:String(last.signature)}; } if((last?Number(last.seq):0)+1!==seq) throw new Error(\"REJECT\"); const pub=await ed.getPublicKeyAsync(await roleSeed(\"witness\")); const payload={v:9,deployment_digest:DEPLOYMENT_DIGEST,provider_family:PROVIDER_FAMILY,provider_id:PROVIDER_ID,key_id:await keyId(pub),seq,head,previous_receipt_hash:last?String(last.receipt_hash):\"0\".repeat(64),observed_at:Math.floor(Date.now()/1000)}; const signature=bytesToB64u(await ed.signAsync(te.encode(canon(payload)),await roleSeed(\"witness\"))); const rh=await sha256HexText(canon({...payload,signature})); try { await sqlite.execute({sql:\"INSERT INTO v092_witness(deployment_digest,seq,head,previous_receipt_hash,observed_at,signature,receipt_hash) VALUES (?,?,?,?,?,?,?)\",args:[DEPLOYMENT_DIGEST,seq,head,payload.previous_receipt_hash,payload.observed_at,signature,rh]}); } catch { throw new Error(\"REJECT\"); } return {...payload,signature}; }\nasync function signPermit(body:any){ const pb=body?.permit_body, grant=body?.approval_grant; if(!pb||typeof pb!==\"object\"||Array.isArray(pb)||typeof grant!==\"string\") throw new Error(\"REJECT\"); const digest=await sha256HexText(canon(pb)); const g=await verifyGrant(grant,digest); if(!g) throw new Error(\"REJECT\"); if(pb.v!==9||pb.broker_audience!==BROKER_AUDIENCE||pb.deployment_digest!==DEPLOYMENT_DIGEST) throw new Error(\"REJECT\"); if(typeof pb.iat!==\"number\"||typeof pb.exp!==\"number\") throw new Error(\"REJECT\"); const now=Math.floor(Date.now()/1000), iat=pb.iat, exp=pb.exp; if(!Number.isInteger(iat)||!Number.isInteger(exp)||iat>now+30||exp300||exp>g.exp||!isNonce(pb.nonce)) throw new Error(\"REJECT\"); for(const k of [\"task_id\",\"plan_id\",\"policy_digest\",\"request_digest\"]) if(typeof pb[k]!==\"string\"||typeof g[k]!==\"string\"||pb[k]!==g[k]) throw new Error(\"REJECT\"); if(!isHex64(pb.policy_digest)||!isHex64(pb.request_digest)) throw new Error(\"REJECT\"); const priv=await roleSeed(\"signer\"), pub=await ed.getPublicKeyAsync(priv); return {v:9,provider_family:PROVIDER_FAMILY,provider_id:PROVIDER_ID,key_id:await keyId(pub),permit_body_digest:digest,signature:bytesToB64u(await ed.signAsync(te.encode(canon(pb)),priv))}; }\nexport default async function(req:Request):Promise{ try { if(req.method===\"GET\") return Response.json(await identity(),{headers:{\"Cache-Control\":\"no-store\"}}); if(req.method!==\"POST\") return new Response(\"method\",{status:405}); const len=Number(req.headers.get(\"content-length\")||\"0\"); if(len>65536) return Response.json({ok:false,error:\"REJECTED\"},{status:413}); 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