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59 lines
1.8 KiB
59 lines
1.8 KiB
/**
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* An exceptional grant of rights on a resource, for when work needs to be
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* initiated by Grist systems rather than a user. Cases where this may happen:
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*
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* - Deletion of documents and workspaces in the trash
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*
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* Permits are stored in redis (or, in a single-process dev environment, in memory)
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* as json, in keys that expire within minutes. The keys should be effectively
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* unguessable.
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*
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* To use a permit:
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*
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* - Prepare a Permit object that includes the id of the document or
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* workspace to be operated on.
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*
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* - It the operation you care about involves the database, check
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* that "allowSpecialPermit" is enabled for it in HomeDBManager
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* (currently only deletion of docs/workspaces has this enabled).
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*
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* - Save the permit in the permit store, with setPermit, noting its
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* generated key.
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*
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* - Call the API with a "Permit: <permit-key>" header.
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*
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* - Optionally, remove the permit with removePermit().
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*/
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export interface Permit {
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docId?: string;
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workspaceId?: number;
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org?: string|number;
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}
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/* A store of permits */
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export interface IPermitStore {
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// Store a permit, and return the key it is stored in.
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// Permits are transient, and will expire.
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setPermit(permit: Permit): Promise<string>;
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// Get any permit associated with the given key, or null if none.
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getPermit(permitKey: string): Promise<Permit|null>;
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// Remove any permit associated with the given key.
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removePermit(permitKey: string): Promise<void>;
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// Close down the permit store.
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close(): Promise<void>;
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}
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// Create a well formatted permit key from a seed string.
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export function formatPermitKey(seed: string) {
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return `permit-${seed}`;
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}
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// Check that permit key is well formatted.
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export function checkPermitKey(key: string): boolean {
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return key.startsWith('permit-');
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}
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