git.iko.soy/bridge
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bridge/src/lib/useKeyfileGenerator.js
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1import { useCallback, useEffect, useState } from 'react';
2import { Just, Nothing } from 'folktale/maybe';
3import saveAs from 'file-saver';
4import * as ob from 'urbit-ob';
6import { usePointCache } from 'store/pointCache';
7import { useWallet } from 'store/wallet';
8import { usePointCursor } from 'store/pointCursor';
10import * as need from 'lib/need';
12import {
13 attemptNetworkSeedDerivation,
14 keysMatchChain,
15 deriveNetworkKeys,
16 compileNetworkingKey,
17} from './keys';
18import useCurrentPermissions from './useCurrentPermissions';
20export default function useKeyfileGenerator(manualNetworkSeed) {
21 const { urbitWallet, wallet, authMnemonic } = useWallet();
22 const { pointCursor } = usePointCursor();
23 const { getDetails } = usePointCache();
25 const [notice, setNotice] = useState('Deriving networking keys...');
26 const [downloaded, setDownloaded] = useState(false);
27 const [generating, setGenerating] = useState(true);
28 const [keyfile, setKeyfile] = useState(false);
30 const _point = need.point(pointCursor);
31 const _details = need.details(getDetails(_point));
33 const networkRevision = parseInt(_details.keyRevisionNumber, 10);
34 const { isOwner, isManagementProxy } = useCurrentPermissions();
36 const hasNetworkingKeys = networkRevision > 0;
37 const available =
38 (isOwner || isManagementProxy) && hasNetworkingKeys && !!keyfile;
40 const generate = useCallback(async () => {
41 console.log('attempting generation for network revision', networkRevision);
42 if (!hasNetworkingKeys) {
43 setGenerating(false);
44 setNotice('Networking keys not yet set.');
45 return;
46 }
48 const networkSeed = manualNetworkSeed
49 ? Just(manualNetworkSeed)
50 : await attemptNetworkSeedDerivation({
51 urbitWallet,
52 wallet,
53 authMnemonic,
54 details: _details,
55 revision: networkRevision,
56 });
58 if (Nothing.hasInstance(networkSeed)) {
59 setGenerating(false);
60 setNotice(
61 'Custom or nondeterministic networking keys cannot be re-downloaded.'
62 );
63 return;
64 }
66 const _networkSeed = networkSeed.value;
68 const pair = deriveNetworkKeys(_networkSeed);
70 if (!keysMatchChain(pair, _details)) {
71 setGenerating(false);
72 setNotice('Derived networking keys do not match on-chain details.');
73 return;
74 }
76 setNotice();
77 setKeyfile(compileNetworkingKey(pair, _point, networkRevision));
78 setGenerating(false);
79 }, [
80 networkRevision,
81 hasNetworkingKeys,
82 manualNetworkSeed,
83 urbitWallet,
84 wallet,
85 authMnemonic,
86 _details,
87 _point,
88 ]);
90 const download = useCallback(() => {
91 saveAs(
92 new Blob([keyfile], {
93 type: 'text/plain;charset=utf-8',
94 }),
95 `${ob.patp(_point).slice(1)}-${networkRevision}.key`
96 // TODO: ^ unifiy "remove tilde" calls
97 );
98 setDownloaded(true);
99 }, [_point, keyfile, networkRevision]);
101 useEffect(() => {
102 generate();
103 }, [generate]);
105 const values = {
106 generating,
107 available,
108 downloaded,
109 download,
110 notice,
111 };
113 return { ...values, bind: values };