[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_159":160,"_161":162},"routes/_app.x.$handle.$name",{"_99":98,"_32":45,"_108":89,"_27":109,"_13":14,"_110":-5,"_11":111,"_112":113,"_114":115,"_116":117,"_118":119,"_20":-5,"_120":-5,"_121":-5,"_122":25,"_123":124,"_125":58,"_126":-5,"_127":-5,"_128":129},"routes/_app.x.$handle.$name.branch.$branch.version.$version.diff",{"_11":12,"_13":14,"_15":16,"_17":-5,"_18":-5},"project",{"_43":44,"_32":45,"_38":46,"_47":-5,"_48":25,"_49":50,"_51":50,"_52":53,"_54":-5,"_18":55,"_56":31,"_57":58,"_59":-5,"_60":-5,"_61":62,"_63":64,"_65":66,"_67":68,"_69":70,"_71":-5,"_72":73,"_74":73,"_75":76,"_77":76,"_78":76,"_79":73,"_80":73,"_81":82,"_83":84,"_85":86,"_87":25},"version",4,"changes",[19],"aiChatInfo","userId",{"_20":21,"_22":23,"_24":25,"_26":25,"_27":28,"_29":28},"file",{"_30":31,"_32":28,"_33":34,"_35":37,"_38":39,"_40":14,"_41":42,"_24":25},"previous",{"_30":31,"_32":28,"_33":34,"_35":36},"deleted",false,"deletedHere","path","main.ts","latestPath","fileId","12e23346-abac-11f1-a170-1607ee4eb77e","name","fileType","http","content","import { Hono } from \"npm:hono\";\nimport { McpServer, StreamableHttpTransport } from \"https://esm.sh/mcp-lite@0.8.1\";\nimport { z } from \"https://esm.sh/zod@4\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\nimport { createRemoteJWKSet, jwtVerify } from \"npm:jose\";\n\nconst CHATGPT_CLIENT_ID = \"https://chatgpt.com/oauth/client.json\";\nconst CHATGPT_JWKS = new URL(\"https://chatgpt.com/oauth/jwks.json\");\nconst CHATGPT_REDIRECT = \"https://chatgpt.com/connector_platform_oauth_redirect\";\nconst SCOPE = \"session:attest\";\nconst enc = new TextEncoder();\nconst hmacSecret = Deno.env.get(\"ATTEST_HMAC_SECRET\") ?? \"\";\nif (hmacSecret.length < 32) throw new Error(\"ATTEST_HMAC_SECRET missing\");\n\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS oauth_codes(\n code_hash TEXT PRIMARY KEY,\n client_id TEXT NOT NULL,\n redirect_uri TEXT NOT NULL,\n resource TEXT NOT NULL,\n scope TEXT NOT NULL,\n code_challenge TEXT NOT NULL,\n expires_at INTEGER NOT NULL,\n used INTEGER NOT NULL DEFAULT 0\n)`);\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS oauth_tokens(\n token_hash TEXT PRIMARY KEY,\n client_id TEXT NOT NULL,\n resource TEXT NOT NULL,\n scope TEXT NOT NULL,\n issued_at INTEGER NOT NULL,\n expires_at INTEGER NOT NULL,\n client_auth_method TEXT NOT NULL\n)`);\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS client_assertion_jti(\n jti TEXT PRIMARY KEY,\n expires_at INTEGER NOT NULL\n)`);\n\nfunction b64u(bytes: Uint8Array) {\n let s = \"\";\n for (const b of bytes) s += String.fromCharCode(b);\n return btoa(s).replaceAll(\"+\",\"-\").replaceAll(\"/\",\"_\").replace(/=+$/,\"\");\n}\nfunction unb64u(s:string){\n s=s.replaceAll(\"-\",\"+\").replaceAll(\"_\",\"/\");\n while(s.length%4)s+=\"=\";\n const raw=atob(s); return Uint8Array.from(raw,c=>c.charCodeAt(0));\n}\nasync function sha256Bytes(bytes:Uint8Array){\n return new Uint8Array(await crypto.subtle.digest(\"SHA-256\", bytes));\n}\nasync function sha256Text(s:string){ return b64u(await sha256Bytes(enc.encode(s))); }\nasync function sha256Hex(s:string){\n return [...await sha256Bytes(enc.encode(s))].map(x=>x.toString(16).padStart(2,\"0\")).join(\"\");\n}\nasync function hmacTag(kind:string, raw:string){\n const k=await crypto.subtle.importKey(\"raw\",enc.encode(hmacSecret),{name:\"HMAC\",hash:\"SHA-256\"},false,[\"sign\"]);\n const sig=new Uint8Array(await crypto.subtle.sign(\"HMAC\",k,enc.encode(kind+\"\\n\"+raw)));\n return b64u(sig);\n}\nfunction randomToken(bytes=32){ const a=crypto.getRandomValues(new Uint8Array(bytes)); return b64u(a); }\nfunction oauthError(error:string, description:string, status=400){\n return Response.json({error,error_description:description},{status,headers:{\"cache-control\":\"no-store\"}});\n}\nfunction base(req:Request){ const u=new URL(req.url); return u.protocol+\"//\"+u.host; }\nfunction resourceMetadata(origin:string){\n return {\n resource: origin,\n authorization_servers:[origin],\n scopes_supported:[SCOPE],\n resource_documentation: origin+\"/\"\n };\n}\nfunction authMetadata(origin:string){\n return {\n issuer:origin,\n authorization_endpoint:origin+\"/oauth/authorize\",\n token_endpoint:origin+\"/oauth/token\",\n response_types_supported:[\"code\"],\n grant_types_supported:[\"authorization_code\"],\n code_challenge_methods_supported:[\"S256\"],\n scopes_supported:[SCOPE],\n token_endpoint_auth_methods_supported:[\"private_key_jwt\"],\n client_id_metadata_document_supported:true,\n authorization_response_iss_parameter_supported:true\n };\n}\nasync function validateChatGPTClientDocument(clientId:string, redirectUri:string){\n if(clientId!==CHATGPT_CLIENT_ID || redirectUri!==CHATGPT_REDIRECT) return false;\n const r=await fetch(clientId,{headers:{\"accept\":\"application/json\"}});\n if(!r.ok) return false;\n const j=await r.json() as any;\n const redirects=Array.isArray(j.redirect_uris)?j.redirect_uris:[];\n const methods=Array.isArray(j.token_endpoint_auth_methods_supported)\n ? j.token_endpoint_auth_methods_supported\n : [j.token_endpoint_auth_method].filter(Boolean);\n return redirects.includes(redirectUri) && methods.includes(\"private_key_jwt\");\n}\nasync function verifyClientAssertion(assertion:string, clientId:string, tokenEndpoint:string){\n const jwks=createRemoteJWKSet(CHATGPT_JWKS);\n const {payload,protectedHeader}=await jwtVerify(assertion,jwks,{\n issuer:clientId,\n audience:tokenEndpoint,\n clockTolerance:5\n });\n if(payload.sub!==clientId) throw new Error(\"client_assertion sub mismatch\");\n if(typeof payload.jti!==\"string\" || payload.jti.length<8) throw new Error(\"client_assertion jti missing\");\n if(typeof payload.exp!==\"number\") throw new Error(\"client_assertion exp missing\");\n if(!protectedHeader.kid) throw new Error(\"client_assertion kid missing\");\n const expMs=payload.exp*1000;\n const inserted=await sqlite.execute({\n sql:\"INSERT OR IGNORE INTO client_assertion_jti(jti,expires_at) VALUES(?,?)\",\n args:[payload.jti,expMs]\n });\n if(Number((inserted as any).rowsAffected??0)!==1) throw new Error(\"client_assertion replay\");\n return {jti:payload.jti,expMs,kid:protectedHeader.kid};\n}\nasync function verifyBearer(req:Request, origin:string){\n const a=req.headers.get(\"authorization\")??\"\";\n if(!a.startsWith(\"Bearer \")) return {ok:false as const,reason:\"missing_bearer\"};\n const raw=a.slice(7).trim();\n if(raw.length<20) return {ok:false as const,reason:\"malformed_bearer\"};\n const hash=await sha256Hex(raw);\n const q=await sqlite.execute({\n sql:\"SELECT client_id,resource,scope,issued_at,expires_at,client_auth_method FROM oauth_tokens WHERE token_hash=? LIMIT 1\",\n args:[hash]\n });\n const row=(q.rows?.[0]??null) as any;\n if(!row) return {ok:false as const,reason:\"unknown_bearer\"};\n if(Number(row.expires_at)z.toJSONSchema(schema as z.ZodType)\n});\nmcp.tool(\"attest_chatgpt_session\",{\n description:\"Candidate-only: return opaque correlation tags only when the request carries a short-lived bearer minted after ChatGPT private_key_jwt client authentication.\",\n inputSchema:z.object({}),\n securitySchemes:[{type:\"oauth2\",scopes:[SCOPE]}],\n handler:async(_args:any,ctx:any)=>{\n const meta=ctx?.request?.params?._meta??{};\n const verified=meta[\"brain/verified_chatgpt_oauth\"]===true;\n if(!verified){\n const rm=currentOrigin+\"/.well-known/oauth-protected-resource\";\n return {\n content:[{type:\"text\",text:\"Authentication required.\"}],\n _meta:{\"mcp/www_authenticate\":[`Bearer resource_metadata=\"${rm}\", error=\"invalid_token\", error_description=\"ChatGPT client authentication required\"`]},\n isError:true\n };\n }\n const subject=meta[\"openai/subject\"];\n const session=meta[\"openai/session\"];\n if(typeof subject!==\"string\" || subject.length<8 || typeof session!==\"string\" || session.length<8){\n return {content:[{type:\"text\",text:\"Required ChatGPT correlation metadata absent.\"}],isError:true};\n }\n const subject_tag=await hmacTag(\"subject\",subject);\n const session_tag=await hmacTag(\"session\",session);\n return {\n content:[{type:\"text\",text:\"Candidate session attestation observed.\"}],\n structuredContent:{\n schema:\"CHATGPT_SESSION_ATTEST_CANARY_V2\",\n classification:\"CHATGPT_OAUTH_CLIENT_AUTHENTICATED_AT_TOKEN_ISSUANCE\",\n positive_physical_session_provenance:false,\n reason_positive_not_yet_claimed:\"Bearer token is not sender-constrained at the MCP request layer; mTLS or an equivalent per-request host proof is still required for strict physical-session provenance.\",\n client_auth_method:\"private_key_jwt\",\n subject_tag,\n session_tag,\n raw_subject_returned:false,\n raw_session_returned:false,\n sender_constrained:false,\n token_expires_at:Number(meta[\"brain/token_expires_at\"]??0)\n }\n };\n }\n} as any);\nconst transport=new StreamableHttpTransport();\nconst mcpHandler=transport.bind(mcp);\n\nconst app=new Hono();\napp.get(\"/\",c=>c.json({\n schema:\"PROJECT_BRAIN_SESSION_ATTESTATION_CANARY_V2\",\n classification:\"CANDIDATE_NONAUTHORITY\",\n mcp:c.req.url.replace(/\\/$/,\"\")+\"/mcp\",\n objective:\"Test ChatGPT private_key_jwt OAuth client authentication plus openai/session correlation without claiming sender-constrained physical-session provenance.\"\n}));\napp.get(\"/.well-known/oauth-protected-resource\",c=>c.json(resourceMetadata(base(c.req.raw))));\napp.get(\"/.well-known/oauth-authorization-server\",c=>c.json(authMetadata(base(c.req.raw))));\n\napp.get(\"/oauth/authorize\",async c=>{\n const u=new URL(c.req.url), origin=base(c.req.raw);\n const clientId=u.searchParams.get(\"client_id\")??\"\";\n const redirect=u.searchParams.get(\"redirect_uri\")??\"\";\n const responseType=u.searchParams.get(\"response_type\")??\"\";\n const challenge=u.searchParams.get(\"code_challenge\")??\"\";\n const method=u.searchParams.get(\"code_challenge_method\")??\"\";\n const state=u.searchParams.get(\"state\")??\"\";\n const resource=u.searchParams.get(\"resource\")??\"\";\n const scope=u.searchParams.get(\"scope\")??\"\";\n if(responseType!==\"code\") return c.body(\"unsupported response_type\",400);\n if(method!==\"S256\" || challenge.length<43) return c.body(\"PKCE S256 required\",400);\n if(resource!==origin) return c.body(\"resource mismatch\",400);\n if(!scope.split(/\\s+/).includes(SCOPE)) return c.body(\"scope missing\",400);\n if(!await validateChatGPTClientDocument(clientId,redirect)) return c.body(\"ChatGPT CIMD/redirect validation failed\",400);\n const code=randomToken(32), codeHash=await sha256Hex(code), expires=Date.now()+90_000;\n await sqlite.execute({\n sql:\"INSERT INTO oauth_codes(code_hash,client_id,redirect_uri,resource,scope,code_challenge,expires_at,used) VALUES(?,?,?,?,?,?,?,0)\",\n args:[codeHash,clientId,redirect,resource,SCOPE,challenge,expires]\n });\n const out=new URL(redirect);\n out.searchParams.set(\"code\",code);\n if(state) out.searchParams.set(\"state\",state);\n out.searchParams.set(\"iss\",origin);\n return c.redirect(out.toString(),302);\n});\n\napp.post(\"/oauth/token\",async c=>{\n const origin=base(c.req.raw), tokenEndpoint=origin+\"/oauth/token\";\n const raw=await c.req.raw.text();\n const f=new URLSearchParams(raw);\n const grant=f.get(\"grant_type\")??\"\";\n const code=f.get(\"code\")??\"\";\n const redirect=f.get(\"redirect_uri\")??\"\";\n const clientId=f.get(\"client_id\")??\"\";\n const verifier=f.get(\"code_verifier\")??\"\";\n const resource=f.get(\"resource\")??\"\";\n const assertionType=f.get(\"client_assertion_type\")??\"\";\n const assertion=f.get(\"client_assertion\")??\"\";\n if(grant!==\"authorization_code\") return oauthError(\"unsupported_grant_type\",\"authorization_code required\");\n if(clientId!==CHATGPT_CLIENT_ID || redirect!==CHATGPT_REDIRECT || resource!==origin) return oauthError(\"invalid_client\",\"client/resource binding mismatch\",401);\n if(assertionType!==\"urn:ietf:params:oauth:client-assertion-type:jwt-bearer\" || !assertion) return oauthError(\"invalid_client\",\"private_key_jwt client assertion required\",401);\n try{ await verifyClientAssertion(assertion,clientId,tokenEndpoint); }\n catch(e){ return oauthError(\"invalid_client\",\"ChatGPT private_key_jwt verification failed\",401); }\n const codeHash=await sha256Hex(code);\n const q=await sqlite.execute({sql:\"SELECT * FROM oauth_codes WHERE code_hash=? LIMIT 1\",args:[codeHash]});\n const row=(q.rows?.[0]??null) as any;\n if(!row || Number(row.used)!==0 || Number(row.expires_at){\n const origin=base(c.req.raw);\n currentOrigin=origin;\n const host=await verifyBearer(c.req.raw,origin);\n if(c.req.method!==\"POST\") return mcpHandler(c.req.raw);\n let body:any;\n try{body=await c.req.raw.clone().json();}catch{return mcpHandler(c.req.raw);}\n if(body && typeof body===\"object\" && body.params && typeof body.params===\"object\"){\n const incoming=(body.params._meta && typeof body.params._meta===\"object\")?body.params._meta:{};\n const clean:any={};\n for(const [k,v] of Object.entries(incoming)) if(!k.startsWith(\"brain/\")) clean[k]=v;\n clean[\"brain/verified_chatgpt_oauth\"]=host.ok;\n if(host.ok){\n clean[\"brain/token_expires_at\"]=host.expires_at;\n clean[\"brain/client_auth_method\"]=\"private_key_jwt\";\n }\n body.params._meta=clean;\n }\n const headers=new Headers(c.req.raw.headers);\n headers.delete(\"content-length\");\n const rewritten=new Request(c.req.url,{method:c.req.method,headers,body:JSON.stringify(body)});\n return mcpHandler(rewritten);\n});\n\napp.onError((err)=>Promise.reject(err));\nexport default app.fetch;\n","import { Hono } from \"npm:hono\";\nimport { McpServer, StreamableHttpTransport } from \"https://esm.sh/mcp-lite@0.8.1\";\nimport { z } from \"https://esm.sh/zod@4\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite/main.ts\";\nimport { createRemoteJWKSet, jwtVerify } from \"npm:jose\";\n\nconst CHATGPT_CLIENT_ID = \"https://chatgpt.com/oauth/client.json\";\nconst CHATGPT_JWKS = new URL(\"https://chatgpt.com/oauth/jwks.json\");\nconst CHATGPT_REDIRECT = \"https://chatgpt.com/connector_platform_oauth_redirect\";\nconst SCOPE = \"session:attest\";\nconst enc = new TextEncoder();\nconst hmacSecret = Deno.env.get(\"ATTEST_HMAC_SECRET\") ?? \"\";\nif (hmacSecret.length < 32) throw new Error(\"ATTEST_HMAC_SECRET missing\");\n\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS oauth_codes(\n code_hash TEXT PRIMARY KEY,\n client_id TEXT NOT NULL,\n redirect_uri TEXT NOT NULL,\n resource TEXT NOT NULL,\n scope TEXT NOT NULL,\n code_challenge TEXT NOT NULL,\n expires_at INTEGER NOT NULL,\n used INTEGER NOT NULL DEFAULT 0\n)`);\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS oauth_tokens(\n token_hash TEXT PRIMARY KEY,\n client_id TEXT NOT NULL,\n resource TEXT NOT NULL,\n scope TEXT NOT NULL,\n issued_at INTEGER NOT NULL,\n expires_at INTEGER NOT NULL,\n client_auth_method TEXT NOT NULL\n)`);\nawait sqlite.execute(`CREATE TABLE IF NOT EXISTS client_assertion_jti(\n jti TEXT PRIMARY KEY,\n expires_at INTEGER NOT NULL\n)`);\n\nfunction b64u(bytes: Uint8Array) {\n let s = \"\";\n for (const b of bytes) s += String.fromCharCode(b);\n return btoa(s).replaceAll(\"+\",\"-\").replaceAll(\"/\",\"_\").replace(/=+$/,\"\");\n}\nfunction unb64u(s:string){\n s=s.replaceAll(\"-\",\"+\").replaceAll(\"_\",\"/\");\n while(s.length%4)s+=\"=\";\n const raw=atob(s); return Uint8Array.from(raw,c=>c.charCodeAt(0));\n}\nasync function sha256Bytes(bytes:Uint8Array){\n return new Uint8Array(await crypto.subtle.digest(\"SHA-256\", bytes));\n}\nasync function sha256Text(s:string){ return b64u(await sha256Bytes(enc.encode(s))); }\nasync function sha256Hex(s:string){\n return [...await sha256Bytes(enc.encode(s))].map(x=>x.toString(16).padStart(2,\"0\")).join(\"\");\n}\nasync function hmacTag(kind:string, raw:string){\n const k=await crypto.subtle.importKey(\"raw\",enc.encode(hmacSecret),{name:\"HMAC\",hash:\"SHA-256\"},false,[\"sign\"]);\n const sig=new Uint8Array(await crypto.subtle.sign(\"HMAC\",k,enc.encode(kind+\"\\n\"+raw)));\n return b64u(sig);\n}\nfunction randomToken(bytes=32){ const a=crypto.getRandomValues(new Uint8Array(bytes)); return b64u(a); }\nfunction oauthError(error:string, description:string, status=400){\n return Response.json({error,error_description:description},{status,headers:{\"cache-control\":\"no-store\"}});\n}\nfunction base(req:Request){ const u=new URL(req.url); return u.protocol+\"//\"+u.host; }\nfunction resourceMetadata(origin:string){\n return {\n resource: origin,\n authorization_servers:[origin],\n scopes_supported:[SCOPE],\n resource_documentation: origin+\"/\"\n };\n}\nfunction authMetadata(origin:string){\n return {\n issuer:origin,\n authorization_endpoint:origin+\"/oauth/authorize\",\n token_endpoint:origin+\"/oauth/token\",\n response_types_supported:[\"code\"],\n grant_types_supported:[\"authorization_code\"],\n code_challenge_methods_supported:[\"S256\"],\n scopes_supported:[SCOPE],\n token_endpoint_auth_methods_supported:[\"private_key_jwt\"],\n client_id_metadata_document_supported:true,\n authorization_response_iss_parameter_supported:true\n };\n}\nasync function validateChatGPTClientDocument(clientId:string, redirectUri:string){\n if(clientId!==CHATGPT_CLIENT_ID || redirectUri!==CHATGPT_REDIRECT) return false;\n const r=await fetch(clientId,{headers:{\"accept\":\"application/json\"}});\n if(!r.ok) return false;\n const j=await r.json() as any;\n const redirects=Array.isArray(j.redirect_uris)?j.redirect_uris:[];\n const methods=Array.isArray(j.token_endpoint_auth_methods_supported)\n ? j.token_endpoint_auth_methods_supported\n : [j.token_endpoint_auth_method].filter(Boolean);\n return redirects.includes(redirectUri) && methods.includes(\"private_key_jwt\");\n}\nasync function verifyClientAssertion(assertion:string, clientId:string, tokenEndpoint:string){\n const jwks=createRemoteJWKSet(CHATGPT_JWKS);\n const {payload,protectedHeader}=await jwtVerify(assertion,jwks,{\n issuer:clientId,\n audience:tokenEndpoint,\n clockTolerance:5\n });\n if(payload.sub!==clientId) throw new Error(\"client_assertion sub mismatch\");\n if(typeof payload.jti!==\"string\" || payload.jti.length<8) throw new Error(\"client_assertion jti missing\");\n if(typeof payload.exp!==\"number\") throw new Error(\"client_assertion exp missing\");\n if(!protectedHeader.kid) throw new Error(\"client_assertion kid missing\");\n const expMs=payload.exp*1000;\n const inserted=await sqlite.execute({\n sql:\"INSERT OR IGNORE INTO client_assertion_jti(jti,expires_at) VALUES(?,?)\",\n args:[payload.jti,expMs]\n });\n if(Number((inserted as any).rowsAffected??0)!==1) throw new Error(\"client_assertion replay\");\n return {jti:payload.jti,expMs,kid:protectedHeader.kid};\n}\nasync function verifyBearer(req:Request, origin:string){\n const a=req.headers.get(\"authorization\")??\"\";\n if(!a.startsWith(\"Bearer \")) return {ok:false as const,reason:\"missing_bearer\"};\n const raw=a.slice(7).trim();\n if(raw.length<20) return {ok:false as const,reason:\"malformed_bearer\"};\n const hash=await sha256Hex(raw);\n const q=await sqlite.execute({\n sql:\"SELECT client_id,resource,scope,issued_at,expires_at,client_auth_method FROM oauth_tokens WHERE token_hash=? LIMIT 1\",\n args:[hash]\n });\n const row=(q.rows?.[0]??null) as any;\n if(!row) return {ok:false as const,reason:\"unknown_bearer\"};\n if(Number(row.expires_at)z.toJSONSchema(schema as z.ZodType)\n});\nmcp.tool(\"attest_chatgpt_session\",{\n description:\"Candidate-only: return opaque correlation tags only when the request carries a short-lived bearer minted after ChatGPT private_key_jwt client authentication.\",\n inputSchema:z.object({}),\n securitySchemes:[{type:\"oauth2\",scopes:[SCOPE]}],\n handler:async(_args:any,ctx:any)=>{\n const meta=ctx?.request?.params?._meta??{};\n const verified=meta[\"brain/verified_chatgpt_oauth\"]===true;\n if(!verified){\n const rm=currentOrigin+\"/.well-known/oauth-protected-resource\";\n return {\n content:[{type:\"text\",text:\"Authentication required.\"}],\n _meta:{\"mcp/www_authenticate\":[`Bearer resource_metadata=\"${rm}\", error=\"invalid_token\", error_description=\"ChatGPT client authentication required\"`]},\n isError:true\n };\n }\n const subject=meta[\"openai/subject\"];\n const session=meta[\"openai/session\"];\n if(typeof subject!==\"string\" || subject.length<8 || typeof session!==\"string\" || session.length<8){\n return {content:[{type:\"text\",text:\"Required ChatGPT correlation metadata absent.\"}],isError:true};\n }\n const subject_tag=await hmacTag(\"subject\",subject);\n const session_tag=await hmacTag(\"session\",session);\n return {\n content:[{type:\"text\",text:\"Candidate session attestation observed.\"}],\n structuredContent:{\n schema:\"CHATGPT_SESSION_ATTEST_CANARY_V2\",\n classification:\"CHATGPT_OAUTH_CLIENT_AUTHENTICATED_AT_TOKEN_ISSUANCE\",\n positive_physical_session_provenance:false,\n reason_positive_not_yet_claimed:\"Bearer token is not sender-constrained at the MCP request layer; mTLS or an equivalent per-request host proof is still required for strict physical-session provenance.\",\n client_auth_method:\"private_key_jwt\",\n subject_tag,\n session_tag,\n raw_subject_returned:false,\n raw_session_returned:false,\n sender_constrained:false,\n token_expires_at:Number(meta[\"brain/token_expires_at\"]??0)\n }\n };\n }\n} as any);\nconst transport=new StreamableHttpTransport();\nconst mcpHandler=transport.bind(mcp);\n\nconst app=new Hono();\napp.get(\"/\",c=>c.json({\n schema:\"PROJECT_BRAIN_SESSION_ATTESTATION_CANARY_V2\",\n classification:\"CANDIDATE_NONAUTHORITY\",\n mcp:c.req.url.replace(/\\/$/,\"\")+\"/mcp\",\n objective:\"Test ChatGPT private_key_jwt OAuth client authentication plus openai/session correlation without claiming sender-constrained physical-session provenance.\"\n}));\napp.get(\"/.well-known/oauth-protected-resource\",c=>c.json(resourceMetadata(base(c.req.raw))));\napp.get(\"/.well-known/oauth-authorization-server\",c=>c.json(authMetadata(base(c.req.raw))));\n\napp.get(\"/oauth/authorize\",async c=>{\n const u=new URL(c.req.url), origin=base(c.req.raw);\n const clientId=u.searchParams.get(\"client_id\")??\"\";\n const redirect=u.searchParams.get(\"redirect_uri\")??\"\";\n const responseType=u.searchParams.get(\"response_type\")??\"\";\n const challenge=u.searchParams.get(\"code_challenge\")??\"\";\n const method=u.searchParams.get(\"code_challenge_method\")??\"\";\n const state=u.searchParams.get(\"state\")??\"\";\n const resource=u.searchParams.get(\"resource\")??\"\";\n const scope=u.searchParams.get(\"scope\")??\"\";\n if(responseType!==\"code\") return c.body(\"unsupported response_type\",400);\n if(method!==\"S256\" || challenge.length<43) return c.body(\"PKCE S256 required\",400);\n if(resource!==origin) return c.body(\"resource mismatch\",400);\n if(!scope.split(/\\s+/).includes(SCOPE)) return c.body(\"scope missing\",400);\n if(!await validateChatGPTClientDocument(clientId,redirect)) return c.body(\"ChatGPT CIMD/redirect validation failed\",400);\n const code=randomToken(32), codeHash=await sha256Hex(code), expires=Date.now()+90_000;\n await sqlite.execute({\n sql:\"INSERT INTO oauth_codes(code_hash,client_id,redirect_uri,resource,scope,code_challenge,expires_at,used) VALUES(?,?,?,?,?,?,?,0)\",\n args:[codeHash,clientId,redirect,resource,SCOPE,challenge,expires]\n });\n const out=new URL(redirect);\n out.searchParams.set(\"code\",code);\n if(state) out.searchParams.set(\"state\",state);\n out.searchParams.set(\"iss\",origin);\n return c.redirect(out.toString(),302);\n});\n\napp.post(\"/oauth/token\",async c=>{\n const origin=base(c.req.raw), tokenEndpoint=origin+\"/oauth/token\";\n const raw=await c.req.raw.text();\n const f=new URLSearchParams(raw);\n const grant=f.get(\"grant_type\")??\"\";\n const code=f.get(\"code\")??\"\";\n const redirect=f.get(\"redirect_uri\")??\"\";\n const clientId=f.get(\"client_id\")??\"\";\n const verifier=f.get(\"code_verifier\")??\"\";\n const resource=f.get(\"resource\")??\"\";\n const assertionType=f.get(\"client_assertion_type\")??\"\";\n const assertion=f.get(\"client_assertion\")??\"\";\n if(grant!==\"authorization_code\") return oauthError(\"unsupported_grant_type\",\"authorization_code required\");\n if(clientId!==CHATGPT_CLIENT_ID || redirect!==CHATGPT_REDIRECT || resource!==origin) return oauthError(\"invalid_client\",\"client/resource binding mismatch\",401);\n if(assertionType!==\"urn:ietf:params:oauth:client-assertion-type:jwt-bearer\" || !assertion) return oauthError(\"invalid_client\",\"private_key_jwt client assertion required\",401);\n try{ await verifyClientAssertion(assertion,clientId,tokenEndpoint); }\n catch(e){ return oauthError(\"invalid_client\",\"ChatGPT private_key_jwt verification failed\",401); }\n const codeHash=await sha256Hex(code);\n const q=await sqlite.execute({sql:\"SELECT * FROM oauth_codes WHERE code_hash=? LIMIT 1\",args:[codeHash]});\n const row=(q.rows?.[0]??null) as any;\n if(!row || Number(row.used)!==0 || Number(row.expires_at){\n const origin=base(c.req.raw);\n currentOrigin=origin;\n const host=await verifyBearer(c.req.raw,origin);\n if(c.req.method!==\"POST\") return mcpHandler(c.req.raw);\n let body:any;\n try{body=await c.req.raw.clone().json();}catch{return mcpHandler(c.req.raw);}\n if(body && typeof body===\"object\" && body.params && typeof body.params===\"object\"){\n const incoming=(body.params._meta && typeof body.params._meta===\"object\")?body.params._meta:{};\n const clean:any={};\n for(const [k,v] of Object.entries(incoming)) if(!k.startsWith(\"brain/\")) clean[k]=v;\n clean[\"brain/verified_chatgpt_oauth\"]=host.ok;\n if(host.ok){\n clean[\"brain/token_expires_at\"]=host.expires_at;\n clean[\"brain/client_auth_method\"]=\"private_key_jwt\";\n }\n body.params._meta=clean;\n }\n const headers=new Headers(c.req.raw.headers);\n headers.delete(\"content-length\");\n const rewritten=new Request(c.req.url,{method:c.req.method,headers,body:JSON.stringify(body)});\n const resp=await mcpHandler(rewritten);\n if(body?.method===\"tools/list\" && resp.ok){\n const textBody=await resp.text();\n const prefix=\"data: \";\n const raw=textBody.startsWith(prefix)?textBody.slice(prefix.length).trim():textBody.trim();\n try{\n const rpc=JSON.parse(raw);\n const tools=rpc?.result?.tools;\n if(Array.isArray(tools)){\n for(const tool of tools){\n if(tool?.name===\"attest_chatgpt_session\"){\n tool.securitySchemes=[{type:\"oauth2\",scopes:[SCOPE]}];\n }\n }\n const outHeaders=new Headers(resp.headers);\n outHeaders.delete(\"content-length\");\n return new Response(\"data: \"+JSON.stringify(rpc)+\"\\n\\n\",{status:resp.status,headers:outHeaders});\n }\n }catch{}\n return new Response(textBody,{status:resp.status,headers:resp.headers});\n }\n return resp;\n});\n\napp.onError((err)=>Promise.reject(err));\nexport default 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Diff · v4