File size: 3,869 Bytes
fc93158 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | import { requiresExecApproval, type ExecAsk, type ExecSecurity } from "../infra/exec-approvals.js";
export type ExecApprovalDecision = "allow-once" | "allow-always" | null;
export type SystemRunPolicyDecision = {
analysisOk: boolean;
allowlistSatisfied: boolean;
shellWrapperBlocked: boolean;
windowsShellWrapperBlocked: boolean;
requiresAsk: boolean;
approvalDecision: ExecApprovalDecision;
approvedByAsk: boolean;
} & (
| {
allowed: true;
}
| {
allowed: false;
eventReason: "security=deny" | "approval-required" | "allowlist-miss";
errorMessage: string;
}
);
export function resolveExecApprovalDecision(value: unknown): ExecApprovalDecision {
if (value === "allow-once" || value === "allow-always") {
return value;
}
return null;
}
export function formatSystemRunAllowlistMissMessage(params?: {
shellWrapperBlocked?: boolean;
windowsShellWrapperBlocked?: boolean;
}): string {
if (params?.windowsShellWrapperBlocked) {
return (
"SYSTEM_RUN_DENIED: allowlist miss " +
"(Windows shell wrappers like cmd.exe /c require approval; " +
"approve once/always or run with --ask on-miss|always)"
);
}
if (params?.shellWrapperBlocked) {
return (
"SYSTEM_RUN_DENIED: allowlist miss " +
"(shell wrappers like sh/bash/zsh -c require approval; " +
"approve once/always or run with --ask on-miss|always)"
);
}
return "SYSTEM_RUN_DENIED: allowlist miss";
}
export function evaluateSystemRunPolicy(params: {
security: ExecSecurity;
ask: ExecAsk;
analysisOk: boolean;
allowlistSatisfied: boolean;
approvalDecision: ExecApprovalDecision;
approved?: boolean;
isWindows: boolean;
cmdInvocation: boolean;
shellWrapperInvocation: boolean;
}): SystemRunPolicyDecision {
const shellWrapperBlocked = params.security === "allowlist" && params.shellWrapperInvocation;
const windowsShellWrapperBlocked =
shellWrapperBlocked && params.isWindows && params.cmdInvocation;
const analysisOk = shellWrapperBlocked ? false : params.analysisOk;
const allowlistSatisfied = shellWrapperBlocked ? false : params.allowlistSatisfied;
const approvedByAsk = params.approvalDecision !== null || params.approved === true;
if (params.security === "deny") {
return {
allowed: false,
eventReason: "security=deny",
errorMessage: "SYSTEM_RUN_DISABLED: security=deny",
analysisOk,
allowlistSatisfied,
shellWrapperBlocked,
windowsShellWrapperBlocked,
requiresAsk: false,
approvalDecision: params.approvalDecision,
approvedByAsk,
};
}
const requiresAsk = requiresExecApproval({
ask: params.ask,
security: params.security,
analysisOk,
allowlistSatisfied,
});
if (requiresAsk && !approvedByAsk) {
return {
allowed: false,
eventReason: "approval-required",
errorMessage: "SYSTEM_RUN_DENIED: approval required",
analysisOk,
allowlistSatisfied,
shellWrapperBlocked,
windowsShellWrapperBlocked,
requiresAsk,
approvalDecision: params.approvalDecision,
approvedByAsk,
};
}
if (params.security === "allowlist" && (!analysisOk || !allowlistSatisfied) && !approvedByAsk) {
return {
allowed: false,
eventReason: "allowlist-miss",
errorMessage: formatSystemRunAllowlistMissMessage({
shellWrapperBlocked,
windowsShellWrapperBlocked,
}),
analysisOk,
allowlistSatisfied,
shellWrapperBlocked,
windowsShellWrapperBlocked,
requiresAsk,
approvalDecision: params.approvalDecision,
approvedByAsk,
};
}
return {
allowed: true,
analysisOk,
allowlistSatisfied,
shellWrapperBlocked,
windowsShellWrapperBlocked,
requiresAsk,
approvalDecision: params.approvalDecision,
approvedByAsk,
};
}
|