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| 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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import queryString from 'query-string'
// @ts-ignore: Could not find a declaration file for module
import { decodeToken } from 'jsontokens'
import { BLOCKSTACK_HANDLER, getGlobalObject, updateQueryStringParameter } from '../utils'
import { fetchPrivate } from '../fetchUtil'
import { Logger } from '../logger'
/**
* Retrieves the authentication request from the query string
* @return {String|null} the authentication request or `null` if
* the query string parameter `authRequest` is not found
* @private
* @ignore
*/
export function getAuthRequestFromURL() {
const location = getGlobalObject('location', { throwIfUnavailable: true, usageDesc: 'getAuthRequestFromURL' })
const queryDict = queryString.parse(location.search)
if (queryDict.authRequest) {
return (<string>queryDict.authRequest).split(`${BLOCKSTACK_HANDLER}:`).join('')
} else {
return null
}
}
/**
* Fetches the contents of the manifest file specified in the authentication request
*
* @param {String} authRequest encoded and signed authentication request
* @return {Promise<Object|String>} Returns a `Promise` that resolves to the JSON
* object manifest file unless there's an error in which case rejects with an error
* message.
* @private
* @ignore
*/
export function fetchAppManifest(authRequest: string): Promise<any> {
return new Promise((resolve, reject) => {
if (!authRequest) {
reject('Invalid auth request')
} else {
const payload = decodeToken(authRequest).payload
const manifestURI = payload.manifest_uri
try {
Logger.debug(`Fetching manifest from ${manifestURI}`)
fetchPrivate(manifestURI)
.then(response => response.text())
.then(responseText => JSON.parse(responseText))
.then((responseJSON) => {
resolve({ ...responseJSON, manifestURI })
})
.catch((e) => {
Logger.debug(e.stack)
reject('Could not fetch manifest.json')
})
} catch (e) {
Logger.debug(e.stack)
reject('Could not fetch manifest.json')
}
}
})
}
/**
* Redirect the user's browser to the app using the `redirect_uri`
* specified in the authentication request, passing the authentication
* response token as a query parameter.
*
* @param {String} authRequest encoded and signed authentication request token
* @param {String} authResponse encoded and signed authentication response token
* @return {void}
* @throws {Error} if there is no redirect uri
* @private
* @ignore
*/
export function redirectUserToApp(authRequest: string, authResponse: string) {
const payload = decodeToken(authRequest).payload
let redirectURI = payload.redirect_uri
Logger.debug(redirectURI)
if (redirectURI) {
redirectURI = updateQueryStringParameter(redirectURI, 'authResponse', authResponse)
} else {
throw new Error('Invalid redirect URI')
}
const location = getGlobalObject('location', { throwIfUnavailable: true, usageDesc: 'redirectUserToApp' })
location.href = redirectURI
}
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