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import * as asn1js from "asn1js";
import * as pvutils from "pvutils";
import { KeyTransRecipientInfo, KeyTransRecipientInfoJson } from "./KeyTransRecipientInfo";
import { KeyAgreeRecipientInfo, KeyAgreeRecipientInfoJson } from "./KeyAgreeRecipientInfo";
import { KEKRecipientInfo, KEKRecipientInfoJson } from "./KEKRecipientInfo";
import { PasswordRecipientinfo, PasswordRecipientInfoJson } from "./PasswordRecipientinfo";
import { OtherRecipientInfo, OtherRecipientInfoJson } from "./OtherRecipientInfo";
import * as Schema from "./Schema";
import { AsnError, ParameterError } from "./errors";
import { PkiObject, PkiObjectParameters } from "./PkiObject";
import { EMPTY_STRING } from "./constants";
const VARIANT = "variant";
const VALUE = "value";
const CLEAR_PROPS = [
"blockName"
];
export interface IRecipientInfo {
variant: number;
value?: RecipientInfoValue;
}
export interface RecipientInfoJson {
variant: number;
value?: RecipientInfoValueJson;
}
export type RecipientInfoValue = KeyTransRecipientInfo | KeyAgreeRecipientInfo | KEKRecipientInfo | PasswordRecipientinfo | OtherRecipientInfo;
export type RecipientInfoValueJson = KeyTransRecipientInfoJson | KeyAgreeRecipientInfoJson | KEKRecipientInfoJson | PasswordRecipientInfoJson | OtherRecipientInfoJson;
export type RecipientInfoParameters = PkiObjectParameters & Partial<IRecipientInfo>;
/**
* Represents the RecipientInfo structure described in [RFC5652](https://datatracker.ietf.org/doc/html/rfc5652)
*/
export class RecipientInfo extends PkiObject implements IRecipientInfo {
public static override CLASS_NAME = "RecipientInfo";
public variant!: number;
public value?: RecipientInfoValue;
/**
* Initializes a new instance of the {@link RecipientInfo} class
* @param parameters Initialization parameters
*/
constructor(parameters: RecipientInfoParameters = {}) {
super();
this.variant = pvutils.getParametersValue(parameters, VARIANT, RecipientInfo.defaultValues(VARIANT));
if (VALUE in parameters) {
this.value = pvutils.getParametersValue(parameters, VALUE, RecipientInfo.defaultValues(VALUE));
}
if (parameters.schema) {
this.fromSchema(parameters.schema);
}
}
/**
* Returns default values for all class members
* @param memberName String name for a class member
* @returns Default value
*/
public static override defaultValues(memberName: typeof VARIANT): number;
public static override defaultValues(memberName: typeof VALUE): RecipientInfoValue;
public static override defaultValues(memberName: string): any {
switch (memberName) {
case VARIANT:
return (-1);
case VALUE:
return {};
default:
return super.defaultValues(memberName);
}
}
/**
* Compare values with default values for all class members
* @param memberName String name for a class member
* @param memberValue Value to compare with default value
*/
public static compareWithDefault(memberName: string, memberValue: any): boolean {
switch (memberName) {
case VARIANT:
return (memberValue === RecipientInfo.defaultValues(memberName));
case VALUE:
return (Object.keys(memberValue).length === 0);
default:
return super.defaultValues(memberName);
}
}
/**
* @inheritdoc
* @asn ASN.1 schema
* ```asn
* RecipientInfo ::= CHOICE {
* ktri KeyTransRecipientInfo,
* kari [1] KeyAgreeRecipientInfo,
* kekri [2] KEKRecipientInfo,
* pwri [3] PasswordRecipientinfo,
* ori [4] OtherRecipientInfo }
*```
*/
public static override schema(parameters: Schema.SchemaParameters = {}): Schema.SchemaType {
const names = pvutils.getParametersValue<NonNullable<typeof parameters.names>>(parameters, "names", {});
return (new asn1js.Choice({
value: [
KeyTransRecipientInfo.schema({
names: {
blockName: (names.blockName || EMPTY_STRING)
}
}),
new asn1js.Constructed({
name: (names.blockName || EMPTY_STRING),
idBlock: {
tagClass: 3, // CONTEXT-SPECIFIC
tagNumber: 1 // [1]
},
value: KeyAgreeRecipientInfo.schema().valueBlock.value
}),
new asn1js.Constructed({
name: (names.blockName || EMPTY_STRING),
idBlock: {
tagClass: 3, // CONTEXT-SPECIFIC
tagNumber: 2 // [2]
},
value: KEKRecipientInfo.schema().valueBlock.value
}),
new asn1js.Constructed({
name: (names.blockName || EMPTY_STRING),
idBlock: {
tagClass: 3, // CONTEXT-SPECIFIC
tagNumber: 3 // [3]
},
value: PasswordRecipientinfo.schema().valueBlock.value
}),
new asn1js.Constructed({
name: (names.blockName || EMPTY_STRING),
idBlock: {
tagClass: 3, // CONTEXT-SPECIFIC
tagNumber: 4 // [4]
},
value: OtherRecipientInfo.schema().valueBlock.value
})
]
}));
}
public fromSchema(schema: Schema.SchemaType): void {
// Clear input data first
pvutils.clearProps(schema, CLEAR_PROPS);
// Check the schema is valid
const asn1 = asn1js.compareSchema(schema,
schema,
RecipientInfo.schema({
names: {
blockName: "blockName"
}
})
);
AsnError.assertSchema(asn1, this.className);
// Get internal properties from parsed schema
if (asn1.result.blockName.idBlock.tagClass === 1) {
this.variant = 1;
this.value = new KeyTransRecipientInfo({ schema: asn1.result.blockName });
} else {
// Create "SEQUENCE" from "ASN1_CONSTRUCTED"
const blockSequence = new asn1js.Sequence({
value: asn1.result.blockName.valueBlock.value
});
switch (asn1.result.blockName.idBlock.tagNumber) {
case 1:
this.variant = 2;
this.value = new KeyAgreeRecipientInfo({ schema: blockSequence });
break;
case 2:
this.variant = 3;
this.value = new KEKRecipientInfo({ schema: blockSequence });
break;
case 3:
this.variant = 4;
this.value = new PasswordRecipientinfo({ schema: blockSequence });
break;
case 4:
this.variant = 5;
this.value = new OtherRecipientInfo({ schema: blockSequence });
break;
default:
throw new Error("Incorrect structure of RecipientInfo block");
}
}
}
public toSchema(): asn1js.BaseBlock<any> {
// Construct and return new ASN.1 schema for this object
ParameterError.assertEmpty(this.value, "value", "RecipientInfo");
const _schema = this.value.toSchema();
switch (this.variant) {
case 1:
return _schema;
case 2:
case 3:
case 4:
// Create "ASN1_CONSTRUCTED" from "SEQUENCE"
_schema.idBlock.tagClass = 3; // CONTEXT-SPECIFIC
_schema.idBlock.tagNumber = (this.variant - 1);
return _schema;
default:
return new asn1js.Any() as any;
}
}
public toJSON(): RecipientInfoJson {
const res: RecipientInfoJson = {
variant: this.variant
};
if (this.value && (this.variant >= 1) && (this.variant <= 4)) {
res.value = this.value.toJSON();
}
return res;
}
}
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