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chore(jans-cedarling): update documentation
Signed-off-by: Oleh Bohzok <[email protected]> Signed-off-by: Oleh Bohzok <[email protected]> Signed-off-by: Oleh Bohzok <[email protected]> Signed-off-by: Oleh Bohzok <[email protected]>
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--- | ||
tags: | ||
- cedarling | ||
- wasm | ||
--- | ||
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# WASM for Cedarling | ||
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Cedarling provides a binding for JavaScript programs via the `wasm-pack` tool. This allows browser developers to use the cedarling crate in their code directly. | ||
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## Requirements | ||
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- Rust 1.63 or greater | ||
- Installed `wasm-pack` via `cargo` | ||
- clang with `wasm` target support | ||
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## Building | ||
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- Install `wasm-pack` by: | ||
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```sh | ||
cargo install wasm-pack | ||
``` | ||
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- Build cedarling `wasm` in release: | ||
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```bash | ||
wasm-pack build --release --target web | ||
``` | ||
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`wasm-pack` automatically make optimization of `wasm` binary file, using `wasm-opt`. | ||
- Get result in the `pkg` folder. | ||
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## Including in projects | ||
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For using result files in browser project you need make result `pkg` folder accessible for loading in the browser so that you can later import the corresponding file from the browser. | ||
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Here is example of code snippet: | ||
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```html | ||
<script type="module"> | ||
import initWasm, { init } from "/pkg/cedarling_wasm.js"; | ||
async function main() { | ||
await initWasm(); // Initialize the WebAssembly module | ||
// init cedarling with `BOOTSTRAP` config | ||
let instance = await init({ | ||
"CEDARLING_APPLICATION_NAME": "My App", | ||
"CEDARLING_POLICY_STORE_URI": "https://example.com/policy-store.json", | ||
"CEDARLING_LOG_TYPE": "memory", | ||
"CEDARLING_LOG_LEVEL": "INFO", | ||
"CEDARLING_LOG_TTL": 120, | ||
"CEDARLING_DECISION_LOG_USER_CLAIMS ": ["aud", "sub", "email", "username"], | ||
"CEDARLING_DECISION_LOG_WORKLOAD_CLAIMS ": ["aud", "client_id", "rp_id"], | ||
"CEDARLING_USER_AUTHZ": "enabled", | ||
"CEDARLING_WORKLOAD_AUTHZ": "enabled", | ||
"CEDARLING_USER_WORKLOAD_BOOLEAN_OPERATION": "AND", | ||
}); | ||
// make authorize request | ||
let result = await instance.authorize({ | ||
"tokens": { | ||
"access_token": "...", | ||
"id_token": "...", | ||
"userinfo_token": "...", | ||
}, | ||
"action": 'Jans::Action::"Read"', | ||
"resource": { | ||
"type": "Jans::Application", | ||
"id": "some_id", | ||
"app_id": "application_id", | ||
"name": "Some Application", | ||
"url": { | ||
"host": "jans.test", | ||
"path": "/protected-endpoint", | ||
"protocol": "http" | ||
} | ||
}, | ||
"context": { | ||
"current_time": Math.floor(Date.now() / 1000), | ||
"device_health": ["Healthy"], | ||
"fraud_indicators": ["Allowed"], | ||
"geolocation": ["America"], | ||
"network": "127.0.0.1", | ||
"network_type": "Local", | ||
"operating_system": "Linux", | ||
"user_agent": "Linux" | ||
}, | ||
}); | ||
console.log("result:", result); | ||
} | ||
main().catch(console.error); | ||
</script> | ||
``` | ||
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## Usage | ||
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Before usage make sure that you have completed `Building` steps. | ||
You can find usage examples in the following locations: | ||
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- `jans-cedarling/bindings/cedarling_wasm/index.html`: A simple example demonstrating basic usage. | ||
- `jans-cedarling/bindings/cedarling_wasm/cedarling_app.html`: A fully featured `Cedarling` browser app where you can test and validate your configuration. | ||
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### Defined API | ||
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```ts | ||
/** | ||
* Create a new instance of the Cedarling application. | ||
* This function can take as config parameter the eather `Map` other `Object` | ||
*/ | ||
export function init(config: any): Promise<Cedarling>; | ||
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/** | ||
* The instance of the Cedarling application. | ||
*/ | ||
export class Cedarling { | ||
/** | ||
* Create a new instance of the Cedarling application. | ||
* Assume that config is `Object` | ||
*/ | ||
static new(config: object): Promise<Cedarling>; | ||
/** | ||
* Create a new instance of the Cedarling application. | ||
* Assume that config is `Map` | ||
*/ | ||
static new_from_map(config: Map<any, any>): Promise<Cedarling>; | ||
/** | ||
* Authorize request | ||
* makes authorization decision based on the [`Request`] | ||
*/ | ||
authorize(request: any): Promise<AuthorizeResult>; | ||
/** | ||
* Get logs and remove them from the storage. | ||
* Returns `Array` of `Map` | ||
*/ | ||
pop_logs(): Array<any>; | ||
/** | ||
* Get specific log entry. | ||
* Returns `Map` with values or `null`. | ||
*/ | ||
get_log_by_id(id: string): any; | ||
/** | ||
* Returns a list of all log ids. | ||
* Returns `Array` of `String` | ||
*/ | ||
get_log_ids(): Array<any>; | ||
} | ||
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/** | ||
* A WASM wrapper for the Rust `cedarling::AuthorizeResult` struct. | ||
* Represents the result of an authorization request. | ||
*/ | ||
export class AuthorizeResult { | ||
/** | ||
* Convert `AuthorizeResult` to json string value | ||
*/ | ||
json_string(): string; | ||
/** | ||
* Result of authorization where principal is `Jans::Workload` | ||
*/ | ||
workload?: AuthorizeResultResponse; | ||
/** | ||
* Result of authorization where principal is `Jans::User` | ||
*/ | ||
person?: AuthorizeResultResponse; | ||
/** | ||
* Result of authorization | ||
* true means `ALLOW` | ||
* false means `Deny` | ||
* | ||
* this field is [`bool`] type to be compatible with [authzen Access Evaluation Decision](https://openid.github.io/authzen/#section-6.2.1). | ||
*/ | ||
decision: boolean; | ||
} | ||
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/** | ||
* A WASM wrapper for the Rust `cedar_policy::Response` struct. | ||
* Represents the result of an authorization request. | ||
*/ | ||
export class AuthorizeResultResponse { | ||
/** | ||
* Authorization decision | ||
*/ | ||
readonly decision: boolean; | ||
/** | ||
* Diagnostics providing more information on how this decision was reached | ||
*/ | ||
readonly diagnostics: Diagnostics; | ||
} | ||
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/** | ||
* Diagnostics | ||
* =========== | ||
* | ||
* Provides detailed information about how a policy decision was made, including policies that contributed to the decision and any errors encountered during evaluation. | ||
*/ | ||
export class Diagnostics { | ||
/** | ||
* `PolicyId`s of the policies that contributed to the decision. | ||
* If no policies applied to the request, this set will be empty. | ||
* | ||
* The ids should be treated as unordered, | ||
*/ | ||
readonly reason: (string)[]; | ||
/** | ||
* Errors that occurred during authorization. The errors should be | ||
* treated as unordered, since policies may be evaluated in any order. | ||
*/ | ||
readonly errors: (PolicyEvaluationError)[]; | ||
} | ||
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/** | ||
* PolicyEvaluationError | ||
* ===================== | ||
* | ||
* Represents an error that occurred when evaluating a Cedar policy. | ||
*/ | ||
export class PolicyEvaluationError { | ||
/** | ||
* Id of the policy with an error | ||
*/ | ||
readonly id: string; | ||
/** | ||
* Underlying evaluation error string representation | ||
*/ | ||
readonly error: string; | ||
} | ||
``` |
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