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| 1 | +import { randomUUID } from "node:crypto"; |
| 2 | +import { normalizeOptionalString } from "../shared/string-coerce.js"; |
| 3 | +import type { ExecElevatedDefaults } from "./bash-tools.exec-types.js"; |
| 4 | + |
| 5 | +const EXEC_APPROVAL_FOLLOWUP_IDEMPOTENCY_PREFIX = "exec-approval-followup:"; |
| 6 | +const EXEC_APPROVAL_FOLLOWUP_ELEVATED_TOKEN_MARKER = ":elevated:"; |
| 7 | +const EXEC_APPROVAL_FOLLOWUP_ELEVATED_TTL_MS = 5 * 60 * 1000; |
| 8 | + |
| 9 | +type ExecApprovalFollowupElevatedEntry = { |
| 10 | + sessionKey: string; |
| 11 | + bashElevated: ExecElevatedDefaults; |
| 12 | + expiresAtMs: number; |
| 13 | +}; |
| 14 | + |
| 15 | +const execApprovalFollowupElevatedDefaults = new Map<string, ExecApprovalFollowupElevatedEntry>(); |
| 16 | + |
| 17 | +function cloneExecElevatedDefaults(value: ExecElevatedDefaults): ExecElevatedDefaults { |
| 18 | + return { |
| 19 | + enabled: value.enabled, |
| 20 | + allowed: value.allowed, |
| 21 | + defaultLevel: value.defaultLevel, |
| 22 | + ...(value.fullAccessAvailable !== undefined |
| 23 | + ? { fullAccessAvailable: value.fullAccessAvailable } |
| 24 | + : {}), |
| 25 | + ...(value.fullAccessBlockedReason !== undefined |
| 26 | + ? { fullAccessBlockedReason: value.fullAccessBlockedReason } |
| 27 | + : {}), |
| 28 | + }; |
| 29 | +} |
| 30 | + |
| 31 | +function pruneExpiredExecApprovalFollowupElevatedDefaults(nowMs: number): void { |
| 32 | + for (const [token, entry] of execApprovalFollowupElevatedDefaults) { |
| 33 | + if (entry.expiresAtMs <= nowMs) { |
| 34 | + execApprovalFollowupElevatedDefaults.delete(token); |
| 35 | + } |
| 36 | + } |
| 37 | +} |
| 38 | + |
| 39 | +export function buildExecApprovalFollowupIdempotencyKey(params: { |
| 40 | + approvalId: string; |
| 41 | + execApprovalFollowupToken?: string; |
| 42 | +}): string { |
| 43 | + const base = `${EXEC_APPROVAL_FOLLOWUP_IDEMPOTENCY_PREFIX}${params.approvalId}`; |
| 44 | + return params.execApprovalFollowupToken |
| 45 | + ? `${base}${EXEC_APPROVAL_FOLLOWUP_ELEVATED_TOKEN_MARKER}${params.execApprovalFollowupToken}` |
| 46 | + : base; |
| 47 | +} |
| 48 | + |
| 49 | +function parseExecApprovalFollowupToken(idempotencyKey: string): string | undefined { |
| 50 | + if (!idempotencyKey.startsWith(EXEC_APPROVAL_FOLLOWUP_IDEMPOTENCY_PREFIX)) { |
| 51 | + return undefined; |
| 52 | + } |
| 53 | + const tokenMarker = idempotencyKey.lastIndexOf(EXEC_APPROVAL_FOLLOWUP_ELEVATED_TOKEN_MARKER); |
| 54 | + if (tokenMarker < EXEC_APPROVAL_FOLLOWUP_IDEMPOTENCY_PREFIX.length) { |
| 55 | + return undefined; |
| 56 | + } |
| 57 | + return normalizeOptionalString( |
| 58 | + idempotencyKey.slice(tokenMarker + EXEC_APPROVAL_FOLLOWUP_ELEVATED_TOKEN_MARKER.length), |
| 59 | + ); |
| 60 | +} |
| 61 | + |
| 62 | +export function registerExecApprovalFollowupElevatedDefaults(params: { |
| 63 | + sessionKey: string; |
| 64 | + bashElevated?: ExecElevatedDefaults; |
| 65 | + nowMs?: number; |
| 66 | +}): string | undefined { |
| 67 | + const sessionKey = normalizeOptionalString(params.sessionKey); |
| 68 | + if (!params.bashElevated || !sessionKey) { |
| 69 | + return undefined; |
| 70 | + } |
| 71 | + const nowMs = params.nowMs ?? Date.now(); |
| 72 | + pruneExpiredExecApprovalFollowupElevatedDefaults(nowMs); |
| 73 | + const token = randomUUID(); |
| 74 | + execApprovalFollowupElevatedDefaults.set(token, { |
| 75 | + sessionKey, |
| 76 | + bashElevated: cloneExecElevatedDefaults(params.bashElevated), |
| 77 | + expiresAtMs: nowMs + EXEC_APPROVAL_FOLLOWUP_ELEVATED_TTL_MS, |
| 78 | + }); |
| 79 | + return token; |
| 80 | +} |
| 81 | + |
| 82 | +export function consumeExecApprovalFollowupElevatedDefaults(params: { |
| 83 | + token?: string; |
| 84 | + sessionKey?: string; |
| 85 | + nowMs?: number; |
| 86 | +}): ExecElevatedDefaults | undefined { |
| 87 | + const token = normalizeOptionalString(params.token); |
| 88 | + if (!token) { |
| 89 | + return undefined; |
| 90 | + } |
| 91 | + const nowMs = params.nowMs ?? Date.now(); |
| 92 | + pruneExpiredExecApprovalFollowupElevatedDefaults(nowMs); |
| 93 | + const entry = execApprovalFollowupElevatedDefaults.get(token); |
| 94 | + if (!entry) { |
| 95 | + return undefined; |
| 96 | + } |
| 97 | + if (entry.expiresAtMs <= nowMs) { |
| 98 | + execApprovalFollowupElevatedDefaults.delete(token); |
| 99 | + return undefined; |
| 100 | + } |
| 101 | + const sessionKey = normalizeOptionalString(params.sessionKey); |
| 102 | + if (entry.sessionKey !== sessionKey) { |
| 103 | + return undefined; |
| 104 | + } |
| 105 | + execApprovalFollowupElevatedDefaults.delete(token); |
| 106 | + return cloneExecElevatedDefaults(entry.bashElevated); |
| 107 | +} |
| 108 | + |
| 109 | +export function consumeExecApprovalFollowupElevatedDefaultsFromIdempotencyKey(params: { |
| 110 | + idempotencyKey: string; |
| 111 | + sessionKey?: string; |
| 112 | + nowMs?: number; |
| 113 | +}): ExecElevatedDefaults | undefined { |
| 114 | + return consumeExecApprovalFollowupElevatedDefaults({ |
| 115 | + token: parseExecApprovalFollowupToken(params.idempotencyKey), |
| 116 | + sessionKey: params.sessionKey, |
| 117 | + nowMs: params.nowMs, |
| 118 | + }); |
| 119 | +} |
| 120 | + |
| 121 | +export function resetExecApprovalFollowupElevatedDefaultsForTests(): void { |
| 122 | + execApprovalFollowupElevatedDefaults.clear(); |
| 123 | +} |
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