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 } = 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 wallet,
64 authMnemonic,
65 details: _details,
66 revision: networkRevision,
67 });
69 if (Nothing.hasInstance(networkSeed)) {
70 setGenerating(false);
71 setNotice(
72 'Custom or nondeterministic networking keys cannot be re-downloaded.'
73 );
74 console.log(`seed is nondeterminable for revision ${networkRevision}`);
75 return;
76 }
78 const _networkSeed = networkSeed.value;
80 const pair = deriveNetworkKeys(_networkSeed);
82 if (!keysMatchChain(pair, _details)) {
83 setGenerating(false);
84 setNotice('Derived networking keys do not match on-chain details.');
85 console.log(`keys do not match details for revision ${networkRevision}`);
86 return;
87 }
89 setNotice();
90 setCode(generateCode(pair));
91 setKeyfile(compileNetworkingKey(pair, _point, networkRevision));
92 setGenerating(false);
93 }, [
94 networkRevision,
95 hasNetworkingKeys,
96 manualNetworkSeed,
97 urbitWallet,
98 wallet,
99 authMnemonic,
100 setCode,
101 details,
102 _point,
103 ]);
105 const filename = useMemo(() => {
106 return `${ob.patp(_point).slice(1)}-${networkRevision}.key`;
107 // TODO: ^ unifiy "remove tilde" calls
108 }, [_point, networkRevision]);
110 const download = useCallback(() => {
111 saveAs(
112 new Blob([keyfile], {
113 type: 'text/plain;charset=utf-8',
114 }),
115 filename
116 );
117 setDownloaded(true);
118 }, [filename, keyfile]);
120 useEffect(() => {
121 generate();
122 }, [generate]);
124 const values = {
125 generating,
126 available,
127 downloaded,
128 download,
129 filename,
130 notice,
131 code,
132 };
134 return { ...values, bind: values };