Press n or j to go to the next uncovered block, b, p or k for the previous block.
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 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 4x 4x 4x 2x 2x 2x 2x 1x 6x 6x 6x 2x 1x 7x 3x 3x 3x 3x 3x 3x 3x 3x 1x 6x 6x 4x 3x 3x 3x 3x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import { Transaction, script, ECPair } from 'bitcoinjs-lib' import { TokenSigner } from 'jsontokens' import { getBlockstackErrorFromResponse } from '../utils' import { fetchPrivate } from '../fetchUtil' import { getPublicKeyFromPrivate, ecPairToAddress, hexStringToECPair, } from '../keys' import { Logger } from '../logger' import { randomBytes } from '../encryption/cryptoRandom' import { hashSha256Sync } from '../encryption/sha2Hash' /** * @ignore */ export const BLOCKSTACK_GAIA_HUB_LABEL = 'blockstack-gaia-hub-config' /** * The configuration for the user's Gaia storage provider. */ export interface GaiaHubConfig { address: string, url_prefix: string, token: string, server: string } /** * * @param filename * @param contents * @param hubConfig * @param contentType * * @ignore */ export async function uploadToGaiaHub( filename: string, contents: Blob | Buffer | ArrayBufferView | string, hubConfig: GaiaHubConfig, contentType: string = 'application/octet-stream' ): Promise<string> { Logger.debug(`uploadToGaiaHub: uploading ${filename} to ${hubConfig.server}`) const response = await fetchPrivate( `${hubConfig.server}/store/${hubConfig.address}/${filename}`, { method: 'POST', headers: { 'Content-Type': contentType, Authorization: `bearer ${hubConfig.token}` }, body: contents } ) if (!response.ok) { throw await getBlockstackErrorFromResponse(response, 'Error when uploading to Gaia hub.') } const responseText = await response.text() const responseJSON = JSON.parse(responseText) return responseJSON.publicURL } export async function deleteFromGaiaHub( filename: string, hubConfig: GaiaHubConfig ): Promise<void> { Logger.debug(`deleteFromGaiaHub: deleting ${filename} from ${hubConfig.server}`) const response = await fetchPrivate( `${hubConfig.server}/delete/${hubConfig.address}/${filename}`, { method: 'DELETE', headers: { Authorization: `bearer ${hubConfig.token}` } } ) if (!response.ok) { throw await getBlockstackErrorFromResponse(response, 'Error deleting file from Gaia hub.') } } /** * * @param filename * @param hubConfig * * @ignore */ export function getFullReadUrl(filename: string, hubConfig: GaiaHubConfig): Promise<string> { return Promise.resolve(`${hubConfig.url_prefix}${hubConfig.address}/${filename}`) } /** * * @param challengeText * @param signerKeyHex * * @ignore */ function makeLegacyAuthToken(challengeText: string, signerKeyHex: string): string { // only sign specific legacy auth challenges. let parsedChallenge try { parsedChallenge = JSON.parse(challengeText) } catch (err) { throw new Error('Failed in parsing legacy challenge text from the gaia hub.') } if (parsedChallenge[0] === 'gaiahub' && parsedChallenge[3] === 'blockstack_storage_please_sign') { const signer = hexStringToECPair(signerKeyHex + (signerKeyHex.length === 64 ? '01' : '')) const digest = hashSha256Sync(Buffer.from(challengeText)) const signatureBuffer = signer.sign(digest) const signatureWithHash = script.signature.encode( signatureBuffer, Transaction.SIGHASH_NONE) // We only want the DER encoding so remove the sighash version byte at the end. // See: https://github.com/bitcoinjs/bitcoinjs-lib/issues/1241#issuecomment-428062912 const signature = signatureWithHash.toString('hex').slice(0, -2) const publickey = getPublicKeyFromPrivate(signerKeyHex) const token = Buffer.from(JSON.stringify( { publickey, signature } )).toString('base64') return token } else { throw new Error('Failed to connect to legacy gaia hub. If you operate this hub, please update.') } } /** * * @param hubInfo * @param signerKeyHex * @param hubUrl * @param associationToken * * @ignore */ function makeV1GaiaAuthToken(hubInfo: any, signerKeyHex: string, hubUrl: string, associationToken?: string): string { const challengeText = hubInfo.challenge_text const handlesV1Auth = (hubInfo.latest_auth_version && parseInt(hubInfo.latest_auth_version.slice(1), 10) >= 1) const iss = getPublicKeyFromPrivate(signerKeyHex) Iif (!handlesV1Auth) { return makeLegacyAuthToken(challengeText, signerKeyHex) } const salt = randomBytes(16).toString('hex') const payload = { gaiaChallenge: challengeText, hubUrl, iss, salt, associationToken } const token = new TokenSigner('ES256K', signerKeyHex).sign(payload) return `v1:${token}` } /** * * @ignore */ export async function connectToGaiaHub( gaiaHubUrl: string, challengeSignerHex: string, associationToken?: string ): Promise<GaiaHubConfig> { Logger.debug(`connectToGaiaHub: ${gaiaHubUrl}/hub_info`) const response = await fetchPrivate(`${gaiaHubUrl}/hub_info`) const hubInfo = await response.json() const readURL = hubInfo.read_url_prefix const token = makeV1GaiaAuthToken(hubInfo, challengeSignerHex, gaiaHubUrl, associationToken) const address = ecPairToAddress(hexStringToECPair(challengeSignerHex + (challengeSignerHex.length === 64 ? '01' : ''))) return { url_prefix: readURL, address, token, server: gaiaHubUrl } } /** * * @param gaiaHubUrl * @param appPrivateKey * * @ignore */ export async function getBucketUrl(gaiaHubUrl: string, appPrivateKey: string): Promise<string> { const challengeSigner = ECPair.fromPrivateKey(Buffer.from(appPrivateKey, 'hex')) const response = await fetchPrivate(`${gaiaHubUrl}/hub_info`) const responseText = await response.text() const responseJSON = JSON.parse(responseText) const readURL = responseJSON.read_url_prefix const address = ecPairToAddress(challengeSigner) const bucketUrl = `${readURL}${address}/` return bucketUrl } |