git.iko.soy/bridge
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bridge/src/lib/useKeyfileGenerator.js
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1import { useCallback, useMemo, useEffect, useState } from 'react';
2import { Just, Nothing } from 'folktale/maybe';
3import saveAs from 'file-saver';
4import 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';
11import { generateCode } from 'lib/networkCode';
13import {
14 attemptNetworkSeedDerivation,
15 keysMatchChain,
16 deriveNetworkKeys,
17 compileNetworkingKey,
18} from './keys';
19import useCurrentPermissions from './useCurrentPermissions';
20import convertToInt from './convertToInt';
22export default function useKeyfileGenerator(manualNetworkSeed) {
23 const { urbitWallet, wallet, authMnemonic, authToken } = useWallet();
24 const { pointCursor } = usePointCursor();
25 const { getDetails } = usePointCache();
27 const [notice, setNotice] = useState('Deriving networking keys...');
28 const [downloaded, setDownloaded] = useState(false);
29 const [generating, setGenerating] = useState(true);
30 const [keyfile, setKeyfile] = useState(false);
32 const [code, setCode] = useState(false);
34 const _point = need.point(pointCursor);
35 const details = getDetails(_point);
37 const networkRevision = details.matchWith({
38 Just: ({ value }) => convertToInt(value.keyRevisionNumber, 10),
39 Nothing: () => 0,
40 });
41 const { isOwner, isManagementProxy } = useCurrentPermissions();
43 const hasNetworkingKeys = networkRevision > 0;
44 const available =
45 (isOwner || isManagementProxy) && hasNetworkingKeys && !!keyfile;
47 const generate = useCallback(async () => {
48 if (!hasNetworkingKeys) {
49 setGenerating(false);
50 setNotice('Networking keys not yet set.');
51 console.log(
52 `no networking keys available for revision ${networkRevision}`
53 );
54 return;
55 }
57 const _details = need.details(details);
59 const networkSeed = manualNetworkSeed
60 ? Just(manualNetworkSeed)
61 : await attemptNetworkSeedDerivation({
62 urbitWallet,
63 authToken,
64 point: _point,
65 revision: networkRevision,
66 });
68 if (Nothing.hasInstance(networkSeed)) {
69 setGenerating(false);
70 setNotice(
71 'Custom or nondeterministic networking keys cannot be re-downloaded.'
72 );
73 console.log(`seed is nondeterminable for revision ${networkRevision}`);
74 return;
75 }
77 const _networkSeed = networkSeed.value;
79 const pair = deriveNetworkKeys(_networkSeed);
81 if (!keysMatchChain(pair, _details)) {
82 setGenerating(false);
83 setNotice('Derived networking keys do not match on-chain details.');
84 console.log(`keys do not match details for revision ${networkRevision}`);
85 return;
86 }
88 setNotice();
89 setCode(generateCode(pair));
90 setKeyfile(compileNetworkingKey(pair, _point, networkRevision));
91 setGenerating(false);
92 }, [
93 networkRevision,
94 hasNetworkingKeys,
95 manualNetworkSeed,
96 urbitWallet,
97 setCode,
98 details,
99 _point,
100 authToken,
101 ]);
103 const filename = useMemo(() => {
104 return `${ob.patp(_point).slice(1)}-${networkRevision}.key`;
105 // TODO: ^ unifiy "remove tilde" calls
106 }, [_point, networkRevision]);
108 const download = useCallback(() => {
109 saveAs(
110 new Blob([keyfile], {
111 type: 'text/plain;charset=utf-8',
112 }),
113 filename
114 );
115 setDownloaded(true);
116 }, [filename, keyfile]);
118 useEffect(() => {
119 generate();
120 }, [generate]);
122 const values = {
123 generating,
124 available,
125 downloaded,
126 download,
127 filename,
128 notice,
129 keyfile,
130 code,
131 };
133 return { ...values, bind: values };