import type { Policy, PolicyArgumentCondition, Source,} from "#schema"; export type InvocationOperationKind = | "read" | "write" | "delete" | "execute" | "unknown"; export type InvocationDescriptor = { toolPath: string; sourceId: Source["id"]; sourceName: Source["name"]; sourceKind: Source["kind"]; sourceNamespace: string | null; operationKind: InvocationOperationKind; httpMethod: string | null; httpPathTemplate: string | null; graphqlOperationType: "query" | "mutation" | "subscription" | null;}; export type InvocationPolicyContext = { workspaceId: Exclude<Policy["workspaceId"], null>; organizationId: Policy["organizationId"]; accountId?: Policy["targetAccountId"]; clientId?: Policy["clientId"];}; export type InvocationAuthorizationDecision = { kind: "allow" | "deny" | "require_interaction"; reason: string; matchedPolicyId: Policy["id"] | null;}; const namespaceFromToolPath = (toolPath: string): string | null => { const parts = toolPath.split(".").filter(Boolean); if (parts.length <= 1) { return null; } return parts.slice(0, -1).join(".");}; const matchesPattern = ( pattern: string, value: string, matchType: Policy["matchType"],): boolean => { if (matchType === "exact") { return pattern === value; } const escaped = pattern .replace(/[.+?^${}()|[\]\\]/g, "\\$&") .replace(/\*/g, ".*"); return new RegExp(`^${escaped}$`).test(value);}; const parseArgumentConditions = ( argumentConditionsJson: Policy["argumentConditionsJson"],): ReadonlyArray<PolicyArgumentCondition> | null => { if (argumentConditionsJson === null) { return []; } try { const parsed = JSON.parse(argumentConditionsJson) as unknown; if (!Array.isArray(parsed)) { return null; } return parsed.flatMap((item) => { if (!item || typeof item !== "object" || Array.isArray(item)) { return []; } const candidate = item as Record<string, unknown>; return typeof candidate.key === "string" && typeof candidate.operator === "string" && typeof candidate.value === "string" ? [{ key: candidate.key, operator: candidate.operator as PolicyArgumentCondition["operator"], value: candidate.value, } satisfies PolicyArgumentCondition] : []; }); } catch { return null; }}; const asString = (value: unknown): string => value == null ? "" : String(value); const matchesArgumentCondition = ( condition: PolicyArgumentCondition, args: Record<string, unknown>,): boolean => { const value = asString(args[condition.key]); switch (condition.operator) { case "equals": return value === condition.value; case "not_equals": return value !== condition.value; case "contains": return value.includes(condition.value); case "starts_with": return value.startsWith(condition.value); default: return false; }}; const matchesArgumentConditions = ( policy: Policy, args: unknown,): boolean => { const conditions = parseArgumentConditions(policy.argumentConditionsJson); if (conditions === null) { return false; } if (conditions.length === 0) { return true; } if (!args || typeof args !== "object" || Array.isArray(args)) { return false; } const record = args as Record<string, unknown>; return conditions.every((condition) => matchesArgumentCondition(condition, record));}; const matchesScope = ( policy: Policy, context: InvocationPolicyContext,): boolean => { if (policy.organizationId !== context.organizationId) { return false; } if (policy.scopeType === "workspace" && policy.workspaceId !== context.workspaceId) { return false; } if (policy.scopeType === "organization" && policy.workspaceId !== null) { return false; } if (policy.targetAccountId && policy.targetAccountId !== context.accountId) { return false; } if (policy.clientId && policy.clientId !== context.clientId) { return false; } return true;}; const matchesResource = ( policy: Policy, descriptor: InvocationDescriptor,): boolean => { if (policy.resourceType === "all_tools") { return true; } if (policy.resourceType === "source") { return [descriptor.sourceId, `source:${descriptor.sourceId}`].some((candidate) => matchesPattern(policy.resourcePattern, candidate, policy.matchType)); } if (policy.resourceType === "namespace") { const namespace = descriptor.sourceNamespace ?? namespaceFromToolPath(descriptor.toolPath); return namespace === null ? false : matchesPattern(policy.resourcePattern, namespace, policy.matchType); } return matchesPattern(policy.resourcePattern, descriptor.toolPath, policy.matchType);}; const policySpecificity = ( policy: Policy, context: InvocationPolicyContext,): number => { let score = 0; score += policy.scopeType === "workspace" ? 64 : 32; if (policy.targetAccountId && policy.targetAccountId === context.accountId) { score += 128; } if (policy.clientId && policy.clientId === context.clientId) { score += 16; } switch (policy.resourceType) { case "tool_path": score += 24; break; case "namespace": score += 18; break; case "source": score += 12; break; default: break; } if (policy.matchType === "exact") { score += 4; } if (policy.argumentConditionsJson !== null) { score += 32; } score += policy.priority; score += Math.max(1, policy.resourcePattern.replace(/\*/g, "").length); return score;}; const defaultDecisionForInvocation = ( descriptor: InvocationDescriptor,): InvocationAuthorizationDecision => { if (descriptor.sourceKind === "openapi") { const method = descriptor.httpMethod?.toUpperCase() ?? null; if (method === "GET" || method === "HEAD") { return { kind: "allow", reason: `${method} defaults to allow`, matchedPolicyId: null, }; } return { kind: "require_interaction", reason: `${method ?? "unknown HTTP method"} defaults to approval`, matchedPolicyId: null, }; } if (descriptor.sourceKind === "graphql") { if (descriptor.graphqlOperationType === "query") { return { kind: "allow", reason: "GraphQL query defaults to allow", matchedPolicyId: null, }; } return { kind: "require_interaction", reason: `${descriptor.graphqlOperationType ?? "Unknown GraphQL operation"} defaults to approval`, matchedPolicyId: null, }; } return { kind: "allow", reason: "No invocation-specific approval required by default", matchedPolicyId: null, };}; const resolvePolicyDecision = ( policy: Policy,): InvocationAuthorizationDecision => { if (policy.effect === "deny") { return { kind: "deny", reason: `Denied by policy ${policy.id}`, matchedPolicyId: policy.id, }; } if (policy.approvalMode === "required") { return { kind: "require_interaction", reason: `Approval required by policy ${policy.id}`, matchedPolicyId: policy.id, }; } return { kind: "allow", reason: `Allowed by policy ${policy.id}`, matchedPolicyId: policy.id, };}; export const evaluateInvocationPolicy = (input: { descriptor: InvocationDescriptor; args: unknown; policies: ReadonlyArray<Policy>; context: InvocationPolicyContext;}): InvocationAuthorizationDecision => { const candidates = input.policies .filter((policy) => policy.enabled) .filter((policy) => matchesScope(policy, input.context)) .filter((policy) => matchesResource(policy, input.descriptor)) .filter((policy) => matchesArgumentConditions(policy, input.args)) .sort((left, right) => policySpecificity(right, input.context) - policySpecificity(left, input.context)); return candidates[0] ? resolvePolicyDecision(candidates[0]) : defaultDecisionForInvocation(input.descriptor);};
import type {
Policy,
PolicyArgumentCondition,
Source,
} from "#schema";
export type InvocationOperationKind =
| "read"
| "write"
| "delete"
| "execute"
| "unknown";
export type InvocationDescriptor = {
toolPath: string;
sourceId: Source["id"];
sourceName: Source["name"];
sourceKind: Source["kind"];
sourceNamespace: string | null;
operationKind: InvocationOperationKind;
httpMethod: string | null;
httpPathTemplate: string | null;
graphqlOperationType: "query" | "mutation" | "subscription" | null;
};
export type InvocationPolicyContext = {
workspaceId: Exclude<Policy["workspaceId"], null>;
organizationId: Policy["organizationId"];
accountId?: Policy["targetAccountId"];
clientId?: Policy["clientId"];
};
export type InvocationAuthorizationDecision = {
kind: "allow" | "deny" | "require_interaction";
reason: string;
matchedPolicyId: Policy["id"] | null;
};
const namespaceFromToolPath = (toolPath: string): string | null => {
const parts = toolPath.split(".").filter(Boolean);
if (parts.length <= 1) {
return null;
}
return parts.slice(0, -1).join(".");
};
const matchesPattern = (
pattern: string,
value: string,
matchType: Policy["matchType"],
): boolean => {
if (matchType === "exact") {
return pattern === value;
}
const escaped = pattern
.replace(/[.+?^${}()|[\]\\]/g, "\\$&")
.replace(/\*/g, ".*");
return new RegExp(`^${escaped}$`).test(value);
};
const parseArgumentConditions = (
argumentConditionsJson: Policy["argumentConditionsJson"],
): ReadonlyArray<PolicyArgumentCondition> | null => {
if (argumentConditionsJson === null) {
return [];
}
try {
const parsed = JSON.parse(argumentConditionsJson) as unknown;
if (!Array.isArray(parsed)) {
return null;
}
return parsed.flatMap((item) => {
if (!item || typeof item !== "object" || Array.isArray(item)) {
return [];
}
const candidate = item as Record<string, unknown>;
return typeof candidate.key === "string"
&& typeof candidate.operator === "string"
&& typeof candidate.value === "string"
? [{
key: candidate.key,
operator: candidate.operator as PolicyArgumentCondition["operator"],
value: candidate.value,
} satisfies PolicyArgumentCondition]
: [];
});
} catch {
return null;
}
};
const asString = (value: unknown): string => value == null ? "" : String(value);
const matchesArgumentCondition = (
condition: PolicyArgumentCondition,
args: Record<string, unknown>,
): boolean => {
const value = asString(args[condition.key]);
switch (condition.operator) {
case "equals":
return value === condition.value;
case "not_equals":
return value !== condition.value;
case "contains":
return value.includes(condition.value);
case "starts_with":
return value.startsWith(condition.value);
default:
return false;
}
};
const matchesArgumentConditions = (
policy: Policy,
args: unknown,
): boolean => {
const conditions = parseArgumentConditions(policy.argumentConditionsJson);
if (conditions === null) {
return false;
}
if (conditions.length === 0) {
return true;
}
if (!args || typeof args !== "object" || Array.isArray(args)) {
return false;
}
const record = args as Record<string, unknown>;
return conditions.every((condition) => matchesArgumentCondition(condition, record));
};
const matchesScope = (
policy: Policy,
context: InvocationPolicyContext,
): boolean => {
if (policy.organizationId !== context.organizationId) {
return false;
}
if (policy.scopeType === "workspace" && policy.workspaceId !== context.workspaceId) {
return false;
}
if (policy.scopeType === "organization" && policy.workspaceId !== null) {
return false;
}
if (policy.targetAccountId && policy.targetAccountId !== context.accountId) {
return false;
}
if (policy.clientId && policy.clientId !== context.clientId) {
return false;
}
return true;
};
const matchesResource = (
policy: Policy,
descriptor: InvocationDescriptor,
): boolean => {
if (policy.resourceType === "all_tools") {
return true;
}
if (policy.resourceType === "source") {
return [descriptor.sourceId, `source:${descriptor.sourceId}`].some((candidate) =>
matchesPattern(policy.resourcePattern, candidate, policy.matchType));
}
if (policy.resourceType === "namespace") {
const namespace = descriptor.sourceNamespace ?? namespaceFromToolPath(descriptor.toolPath);
return namespace === null
? false
: matchesPattern(policy.resourcePattern, namespace, policy.matchType);
}
return matchesPattern(policy.resourcePattern, descriptor.toolPath, policy.matchType);
};
const policySpecificity = (
policy: Policy,
context: InvocationPolicyContext,
): number => {
let score = 0;
score += policy.scopeType === "workspace" ? 64 : 32;
if (policy.targetAccountId && policy.targetAccountId === context.accountId) {
score += 128;
}
if (policy.clientId && policy.clientId === context.clientId) {
score += 16;
}
switch (policy.resourceType) {
case "tool_path":
score += 24;
break;
case "namespace":
score += 18;
break;
case "source":
score += 12;
break;
default:
break;
}
if (policy.matchType === "exact") {
score += 4;
}
if (policy.argumentConditionsJson !== null) {
score += 32;
}
score += policy.priority;
score += Math.max(1, policy.resourcePattern.replace(/\*/g, "").length);
return score;
};
const defaultDecisionForInvocation = (
descriptor: InvocationDescriptor,
): InvocationAuthorizationDecision => {
if (descriptor.sourceKind === "openapi") {
const method = descriptor.httpMethod?.toUpperCase() ?? null;
if (method === "GET" || method === "HEAD") {
return {
kind: "allow",
reason: `${method} defaults to allow`,
matchedPolicyId: null,
};
}
return {
kind: "require_interaction",
reason: `${method ?? "unknown HTTP method"} defaults to approval`,
matchedPolicyId: null,
};
}
if (descriptor.sourceKind === "graphql") {
if (descriptor.graphqlOperationType === "query") {
return {
kind: "allow",
reason: "GraphQL query defaults to allow",
matchedPolicyId: null,
};
}
return {
kind: "require_interaction",
reason: `${descriptor.graphqlOperationType ?? "Unknown GraphQL operation"} defaults to approval`,
matchedPolicyId: null,
};
}
return {
kind: "allow",
reason: "No invocation-specific approval required by default",
matchedPolicyId: null,
};
};
const resolvePolicyDecision = (
policy: Policy,
): InvocationAuthorizationDecision => {
if (policy.effect === "deny") {
return {
kind: "deny",
reason: `Denied by policy ${policy.id}`,
matchedPolicyId: policy.id,
};
}
if (policy.approvalMode === "required") {
return {
kind: "require_interaction",
reason: `Approval required by policy ${policy.id}`,
matchedPolicyId: policy.id,
};
}
return {
kind: "allow",
reason: `Allowed by policy ${policy.id}`,
matchedPolicyId: policy.id,
};
};
export const evaluateInvocationPolicy = (input: {
descriptor: InvocationDescriptor;
args: unknown;
policies: ReadonlyArray<Policy>;
context: InvocationPolicyContext;
}): InvocationAuthorizationDecision => {
const candidates = input.policies
.filter((policy) => policy.enabled)
.filter((policy) => matchesScope(policy, input.context))
.filter((policy) => matchesResource(policy, input.descriptor))
.filter((policy) => matchesArgumentConditions(policy, input.args))
.sort((left, right) =>
policySpecificity(right, input.context) - policySpecificity(left, input.context));
return candidates[0]
? resolvePolicyDecision(candidates[0])
: defaultDecisionForInvocation(input.descriptor);
};